Abstract: The present application discloses an oven that comprises a lower housing assembly, an upper housing assembly, and a retaining assembly. The upper housing assembly is disposed above the lower housing assembly, the upper housing assembly is capable of opening and closing relative to the lower housing assembly and is capable of forming a working cavity when closed with the lower housing assembly, the upper housing assembly comprises an upper housing front plate. The retaining assembly is fixedly disposed on the upper housing front plate to prevent substantial deformation of the upper housing assembly during heating.

Abstract: The present application discloses a processing furnace comprising a furnace chamber; at least one infrared temperature measurement device; at least one calibration device comprising a black body module connected to the detection field of view of the corresponding infrared temperature measurement device; a controller; wherein the infrared temperature measurement device is configured to be capable of detecting the temperature of the black body module in the corresponding calibration device and obtaining calibration temperature data, and the controller is configured to calibrate the infrared temperature measurement device according to the standard temperature data and the calibration temperature data.

Abstract: The present application discloses a fitting apparatus (100) for fitting a sealing member (110) onto a solder paste nozzle (230), the sealing member having a sealing member mounting hole (112), and the fitting apparatus comprising: a support plate (116); at least two first power sources (101, 102, 103, 104); at least two insertion members (121) and a second power source (105). By controlling the driving directions and driving sequence of multiple power sources, the fitting apparatus of the present application completes the work of expanding the sealing member mounting hole in a mechanical fashion; an operator then only needs to pass the base plate of the nozzle through the sealing member mounting hole in order to complete the fitting of the sealing member to the nozzle, so the operation is convenient and saves manpower.

Abstract: The present application provides a furnace chamber for a reflow furnace, the furnace chamber including a high temperature zone and a cooling zone, the cooling zone including: a base plate provided with a through hole; an airflow source provided above the base plate, which delivers airfl 5 ow to the base plate and delivers airflow through the through hole on the base plate, wherein the base plate includes a bottom surface facing away from the airflow source, at least a portion of the bottom surface being arranged at an angle to a horizontal direction of the furnace chamber, the cooling zone being provided with a processing area, and the bottom surface of the 10 base plate being inclined to at least one side of the processing area along a conveying direction of a circuit board. A flux condensed on the bottom surface flows along a ramp to a lower edge of the base plate.

Abstract: The present disclosure discloses a sintering furnace including: a furnace chamber comprising a plurality of processing zones; a conveying device disposed within the furnace chamber and extending along a conveying direction, the conveying device configured to convey a processing element through a plurality of processing zones of the furnace chamber; and at least one temperature measurement device connected to the furnace chamber, the temperature measurement device configured to detect the temperature of the processing element in the furnace chamber and provide temperature data. The present disclosure directly detects the temperature of the photovoltaic device in the sintering furnace through a temperature measurement device, rather than detecting the temperature of the gas in the sintering furnace, for more directly controlling the amount of heat or cold absorbed by the photovoltaic device in various processing areas of the sintering furnace, thereby improving the yield of the product.

Abstract: A reflow oven is disclosed in the present application, the reflow oven including: a housing, where the housing defines an oven chamber, and the oven chamber is provided with an inlet end, an outlet end, and a conveying space extending from the inlet end to the outlet end; and at least two blocking boxes, where the at least two blocking boxes are arranged at the inlet end and the outlet end of the oven chamber respectively and configured to block ambient gases from entering the oven chamber. Each blocking box penetrates at least a part of the housing and is inserted into the oven chamber in a direction transverse to an extension direction of the conveying space, and is configured to be removably mounted on the housing in a drawable manner.

Abstract: The present application provides a fan assembly. this fan assembly is characterized by: a motor and an impeller, the motor having a motor body and a motor shaft extending from the motor body, a distal end of the motor shaft having a first positioning mark with a certain spacing from 5 a central axis of the motor shaft, the distal end of the motor shaft having an end surface, the first positioning mark being at least partially visible on the end surface, the impeller having an impeller center bore, and a second positioning mark being provided on the impeller, where when the motor shaft is inserted into the impeller center bore, and the central axis of the motor 10 shaft, the second positioning marker and the first positioning marker are on a same diameter of the fan assembly, the impeller is mounted in place in a radial direction relative to the motor so that the fan assembly reaches dynamic balance during operation. The impeller and the motor in the present application are detachable.

Abstract: The present application provides a fan assembly for a reflow oven, the fan assembly comprises: a motor, an impeller, an insulation device, and an isolation sleeve. The motor has a motor body and a motor shaft extending from the motor body. The impeller is connected to the motor. The insulation device is disposed between the motor body and the impeller. The insulation device comprises an insulation device rear side surface facing the motor body, and an insulation device center bore. A front side surface of the insulation device has a distance from the impeller to form a gap.

Abstract: Disclosed in the present invention are a polypeptide fragment, a derivative of the polypeptide fragment, and applications of the derivative of the polypeptide in the preparation of drugs for preventing and treating fibrosis diseases.

Abstract: Disclosed in the present invention are a polypeptide fragment, a derivative of the polypeptide fragment, and applications of the derivative of the polypeptide in the preparation of drugs for preventing and treating fibrosis diseases.

Abstract: The present application discloses a fitting apparatus (100) for fitting a sealing member (110) onto a solder paste nozzle (230), the sealing member having a sealing member mounting hole (112), and the fitting apparatus comprising: a support plate (116); at least two first power sources (101, 102, 103, 104); at least two insertion members (121) and a second power source (105). By controlling the driving directions and driving sequence of multiple power sources, the fitting apparatus of the present application completes the work of expanding the sealing member mounting hole in a mechanical fashion; an operator then only needs to pass the base plate of the nozzle through the sealing member mounting hole in order to complete the fitting of the sealing member to the nozzle, so the operation is convenient and saves manpower.

Abstract: An application of a polypeptide or a derivative thereof. Specifically provided are anti-tumor polypeptide drugs (amino acid sequence as represented by SEQ ID No. 1, and amino acid sequence obtained by deleting, replacing, adding and/or modifying one or more amino acids of the amino acid sequence as represented by SEQ ID No.1). These drugs have significant advantages in terms of drug target specificity, drug biological activity, drug toxicity, treatment cost, and the like. Polypeptides or derivatives thereof capable of inhibiting tumor cell activity and tumor metastasis are designed on the basis of cytokines involved in tumor microenvironment formation and homeostasis maintenance, and the polypeptides or derivatives thereof are further applied to the preparation of antitumor drugs.

Abstract: Disclosed in the present invention are a polypeptide fragment, a derivative of the polypeptide fragment, and applications of the derivative of the polypeptide in the preparation of drugs for preventing and treating fibrosis diseases.

Abstract: An irradiating device and a method for controlling it are provided. The device comprises an electron accelerator and a scanning box connected to the electron accelerator, wherein the scanning box is provided with a target, an electron beam exit window positioned at left or right side of the target and a scanning magnet. The device integrates the functions of both the existing irradiating device outputting electron beams and those outputting X-rays. When the scanning magnet is in operation, the irradiating device outputs electron beams; and when the scanning magnet is not in operation, the irradiating device outputs X-rays. Therefore, the device is capable of outputting two radiation sources so as to meet requirements for radiation-processing articles with different sizes.

Abstract: A high-voltage automatic changeover switch, includes a support and a control circuit board mounted on the support. In one embodiment, the support includes an insulating frame, four high-voltage contacts mounted on each of two opposite plates of the insulating frame, four high-voltage contacts on the same plate being pair-to-pair arranged, the high-voltage contacts at the corresponding positions on the two plates being pair-to-pair arranged. A motor is provided on the support, and when switching the high voltages, the control circuit board controls the rotation of the motor to automatically switch the connection relation between the high-voltage contact pairs. Embodiments of the switch have a voltage-resistance of above 50 KV, allowing a pulse current of not less than 500 A to pass through, and good contact performance and a high stability.

Abstract: A high-voltage automatic changeover switch, includes a support and a control circuit board mounted on the support. In one embodiment, the support includes an insulating frame, four high-voltage contacts mounted on each of two opposite plates of the insulating frame, four high-voltage contacts on the same plate being pair-to-pair arranged, the high-voltage contacts at the corresponding positions on the two plates being pair-to-pair arranged. A motor is provided on the support, and when switching the high voltages, the control circuit board controls the rotation of the motor to automatically switch the connection relation between the high-voltage contact pairs. Embodiments of the switch have a voltage-resistance of above 50 KV, allowing a pulse current of not less than 500 A to pass through, and good contact performance and a high stability.

Abstract: An irradiating device and a method for controlling it are provided. The device comprises an electron accelerator and a scanning box connected to the electron accelerator, wherein the scanning box is provided with a target, an electron beam exit window positioned at left or right side of the target and a scanning magnet. The device integrates the functions of both the existing irradiating device outputting electron beams and those outputting X-rays. When the scanning magnet is in operation, the irradiating device outputs electron beams; and when the scanning magnet is not in operation, the irradiating device outputs X-rays. Therefore, the device is capable of outputting two radiation sources so as to meet requirements for radiation-processing articles with different sizes.