Rectifier injection molding positioning clamp

Abstract

The utility model provides a rectifier injection molding positioning clamp. The rectifier injection molding positioning clamp comprises a positioning plate and a transfer frame. The positioning plate is of a long-strip-shaped structure, a plurality of positioning holes are formed in one side of the positioning plate in the length direction, the axes of the positioning holes are located in the same plane, the positioning holes are divided into multiple groups, and each group of positioning holes is used for being connected with the multiple pins of one group of pin assemblies. The transfer frame is of a rectangular frame structure, two rows of supporting plates are arranged in the transfer frame, the ends, away from each other, of the two rows of supporting plates are connected to two opposite side rods of the transfer frame respectively, a preset interval is formed between the opposite ends of the two rows of supporting plates, the positioning plates are arranged on the top faces of the supporting plates in parallel, and detachable connecting structures are adopted between the positioning plates and the supporting plates. The end, used for injection molding, of each pin assembly is located outside the corresponding supporting plate, and a preset interval is formed between the pin assemblies on the adjacent positioning plates in each row. The scheme can effectively shorten the feeding and discharging time in the injection molding link and improve the injection molding efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of semiconductor device packaging fixtures, in particular to a rectifier injection molding positioning fixture. Background Art

[0002] The pins of a bridge rectifier KBL disclosed in the patent application number 200910176913.8 are composed of a group of L-shaped pins that are staggered and arranged facing each other, and then a group of straight-shaped pins are evenly distributed in the lateral part of the group of pins. The L-shaped pins are welded and connected with the straight-shaped pins. A boss is provided at the connection, and a chip is soldered on the boss. After the pins and the chip are welded, a structure such as Figure 1 The pin assembly of the structure shown on the left is finally formed by encapsulation injection molding as shown in the figure. Figure 1 The rectifier is shown on the right.

[0003] In the existing injection molding process, a single pin component is usually placed on a positioning fixture used for injection molding, and then the positioning fixture is used to send multiple independent pin components into the injection mold for injection molding. Finally, the positioning fixture is used to take out the injection-molded rectifier, and the molded rectifiers are taken out from the positioning fixture one by one. This positioning fixture can only perform a single operation when placing the pin component and taking out the rectifier. It takes a lot of time to place and take out the material, which prolongs the time of the intermediate link of the injection molding process. There is a problem of long standby time of the injection mold, which affects the injection molding efficiency. Utility Model Content

[0004] In order to solve the deficiencies in the prior art, the utility model provides a rectifier injection molding positioning fixture, which helps to shorten the loading and unloading time of the injection molding process and improve the injection molding efficiency.

[0005] In order to achieve the purpose of this utility model, the following scheme is proposed:

[0006] A rectifier injection molding positioning fixture comprises a positioning plate and a transfer frame.

[0007] The positioning plate is a long strip structure with multiple positioning holes on one side along the length direction. The axes of the positioning holes are all in the same plane, and the positioning holes are divided into multiple groups. Each group of positioning holes is used to connect multiple pins of a group of pin components.

[0008] The transfer frame is a rectangular frame structure with two rows of support plates inside. The ends of the two rows of support plates that are away from each other are respectively connected to the two opposite side rods of the transfer frame, and there is a predetermined interval between the opposite ends of the two rows of support plates. The positioning plate is arranged parallel to the top surface of the support plate. A detachable connection structure is adopted between the positioning plate and the support plate, and one end of the pin assembly used for injection molding is located outside the support plate, and there is a predetermined interval between the pin assemblies on each adjacent positioning plate.

[0009] The beneficial effects of the utility model are as follows: when placing pin components, multiple pin components can be placed at a time through the positioning plate, which can effectively improve the efficiency of placing pin components; after the injection molding is completed, multiple rectifiers can be taken out at the same time by removing the positioning plate, which effectively improves the material removal efficiency of the rectifier; through the above-mentioned direct replacement of the positioning plate, fast loading and unloading can be achieved, the length of the intermediate links of the injection molding process can be shortened, the standby time of the injection mold can be reduced or even avoided, and the injection molding efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0011] Figure 1 A schematic diagram of the structure of the pin assembly and the rectifier is shown.

[0012] Figure 2 A structural schematic diagram of the positioning plate of the present application is shown.

[0013] Figure 3 Shown is a schematic diagram of the overall structure of the present application.

[0014] Figure 4 Shows Figure 3 A partial enlarged view of point A in the middle.

[0015] Markings in the figure: positioning plate-1, positioning hole-11, rectangular groove-12, transfer frame-2, support plate-21, strip groove-211, card groove-212, through hole-213. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings, but the embodiments described in the utility model are only part of the embodiments of the utility model, rather than all the embodiments.

[0017] like Figure 2 , Figure 3 As shown, a rectifier injection molding positioning fixture includes: a positioning plate 1 and a transfer frame 2.

[0018] The positioning plate 1 is a long strip structure, with a plurality of positioning holes 11 opened along the length direction on one side thereof, and the axes of the positioning holes 11 are all in the same plane, and the positioning holes 11 are divided into multiple groups, each group of positioning holes 11 is used to connect multiple pins of a group of pin assemblies.

[0019] The transfer frame 2 is a rectangular frame structure, in which two rows of support plates 21 are arranged inside. The ends of the two rows of support plates 21 that are away from each other are respectively connected to the two opposite side rods of the transfer frame 2, and there is a predetermined interval between the opposite ends of the two rows of support plates 21. The positioning plate 1 is arranged parallel to the top surface of the support plate 21. A detachable connection structure is adopted between the positioning plate 1 and the support plate 21, and one end of the pin assembly used for injection molding is located outside the support plate 21, and there is a predetermined interval between the pin assemblies on each adjacent positioning plate 1.

[0020] During production, the pin components can be assembled on the positioning plate 1 during the welding process or after the welding is completed. Multiple pin components can be set on the same positioning plate 1 at the same time; then the positioning plate 1 is assembled on the support plate 21, and multiple pin components can be placed at a time, which can effectively improve the efficiency of placing the pin components; then the transfer frame 2 is sent into the injection mold for injection molding; the injection mold can use the interval between the opposite ends of the two columns of support plates 21 to set the main runner, and use the interval between the pin components on each column of adjacent positioning plates 1 to set the branch runner, and at the same time form a rectifier package on both sides of the DC runner; after the injection molding is completed, multiple rectifiers can be taken away at the same time by removing the positioning plate 1 from the transfer frame 2, which effectively improves the material removal efficiency of the rectifier, and by directly replacing the positioning plate 1, fast loading and unloading can be achieved, shortening the duration of the intermediate links of the injection molding process, reducing or even avoiding the standby time of the injection mold, and improving the injection molding efficiency.

[0021] Preferably, Figure 2 As shown, a rectangular groove 12 is provided on the top surface of the positioning plate 1 along the length direction, and the rectangular groove 12 is connected to the positioning hole 11 to facilitate observation of the insertion state and position of the pin.

[0022] Preferably, Figure 3 As shown, a strip groove 211 is provided on the top surface of the support plate 21 for locking the positioning plate 1 .

[0023] Preferably, Figure 4 As shown, a card slot 212 corresponding to the positioning hole 11 is opened under the side of the corresponding pin assembly of the strip groove 211, which is used to clamp the pin to limit the position of the pin assembly and prevent the positioning plate 1 from moving along the length direction. In addition, the positioning plate 1 can be positioned and fixed by setting a positioning pin on the top surface of the support plate 21 and setting a pin hole matching the positioning pin on the bottom surface of the positioning plate 1.

[0024] Preferably, Figure 3As shown, the support plates 21 near the two ends of the transfer frame 2 are connected to the side walls of the transfer frame 2, and a strip groove 211 is opened on the top surface of the support plate 21, and two strip grooves 211 parallel to each other are opened on the top surfaces of the support plates 21 located inside the transfer frame 2, so that two positioning plates 1 can be placed at the same time, and this structure makes the injection molding ends of the pin components face the two sides of the support plate 21 respectively, so that the pin components between adjacent support plates 21 can use the same direct current runner to simplify the structure of the injection mold, and the support plates 21 are arranged in the above manner, which can effectively improve the structural strength of the support plates 21.

[0025] Further preferably, Figure 3 , Figure 4 As shown, a through hole 213 is vertically opened at the bottom of the strip groove 211, which can not only effectively reduce the overall weight of the transfer frame 2, but also a push rod corresponding to the through hole 213 can be set on the top surface of the workbench of the material-retrieving station. After the injection molding is completed, the transfer frame 2 is placed on the workbench to make the push rod pass through the through hole 213, so that the positioning plate 1 is lifted up by the push rod to facilitate the removal of the positioning plate 1.

[0026] The above is only a preferred embodiment of the utility model, and does not mean that it is the only one or limit the utility model. Those skilled in the art should understand that various changes or equivalent replacements made to the utility model without departing from the scope of the utility model are within the scope of protection of the utility model.

Claims

1. A rectifier injection molding positioning fixture, characterized in that: include: The positioning plate (1) is a long strip structure, and a plurality of positioning holes (11) are provided on one side along the length direction, and the axes of the positioning holes (11) are all in the same plane, and the positioning holes (11) are divided into a plurality of groups, and each group of positioning holes (11) is used to connect a plurality of pins of a group of pin assemblies; The transfer frame (2) is a rectangular frame structure, and two rows of support plates (21) are arranged inside the transfer frame. The ends of the two rows of support plates (21) that are away from each other are respectively connected to two opposite side rods of the transfer frame (2), and there is a predetermined interval between the opposite ends of the two rows of support plates (21). The positioning plate (1) is arranged parallel to the top surface of the support plate (21), and a detachable connection structure is adopted between the positioning plate (1) and the support plate (21), and one end of the pin assembly used for injection molding is located outside the support plate (21), and there is a predetermined interval between the pin assemblies on each row of adjacent positioning plates (1).

2. A rectifier injection molding positioning fixture according to claim 1, characterized in that: A rectangular groove (12) is provided on the top surface of the positioning plate (1) along the length direction, and the rectangular groove (12) is connected to the positioning hole (11).

3. A rectifier injection molding positioning fixture according to claim 1, characterized in that: The top surface of the support plate (21) is provided with a strip groove (211) for locking the positioning plate (1).

4. A rectifier injection molding positioning fixture according to claim 3, characterized in that: A clamping groove (212) corresponding to the positioning hole (11) is provided on the side of the strip-shaped groove (211) below the corresponding pin assembly and is used for clamping the pin.

5. The rectifier injection molding positioning fixture according to claim 3, characterized in that: The support plates (21) near the two ends of the transfer frame (2) are connected to the side walls of the transfer frame (2), and a strip groove (211) is formed on the top surface of the support plates (21), and two strip grooves (211) parallel to each other are formed on the top surface of the support plates (21) located inside the transfer frame (2).

6. A rectifier injection molding positioning fixture according to claim 5, characterized in that: A through hole (213) is vertically formed at the bottom of the strip-shaped groove (211).

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