Bending jig and bending equipment suitable for diode bridge rectifier products
By designing a bending fixture for diode bridge stack products, using the rollers in the bending foot assembly for rolling bends, the problem that traditional bending fixtures are prone to damage pins and chips, and the bending quality and product quality are improved.
Patent Information
- Application Number
- CN202421029774.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-13
AI Technical Summary
When existing traditional bending fixtures bending the pins of the diode chip, they are prone to damage the pins and chips, affecting product quality.
A bending fixture including a lower template, a guide assembly, an upper template and a bending foot assembly is designed. The bending foot assembly is equipped with an upper blade holder, a pressing wheel shaft and a roller to reduce friction to the lead wires through the rolling bending of the rollers to avoid damaging the pin plating and chips.
Through rolling bending, damage to the pin plating is reduced, the chip is pulled out and strained, and the bending quality and product quality are improved.
Smart Images
Figure CN222643090U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of semiconductor packaging, and in particular to a bending jig and bending equipment suitable for diode bridge products. Background Art
[0002] Diode bridge stack belongs to the semiconductor packaging industry and the field of component packaging technology. As a power component, it is used in various power supply equipment. The internal bridge circuit mainly consists of four diodes to convert AC voltage into output DC voltage.
[0003] This product is designed to be used in various power supply equipment. Different structural elements are proposed according to the application of different occasions. The most widely used is the single in-line pin of this product, but with the architectural requirements of power supply equipment, the need for bent pins is proposed. The quality of bending and appearance requirements are included in the inspection items. If the bending angle is insufficient or excessive, as well as appearance problems, it will affect the customer's use.
[0004] A conventional bending jig currently used is Figure 1 As shown, in the process of realizing the utility model, the applicant found that the method of vertical bending using a manual jig has at least the following problems: since there is a plating layer on the pins of the diode bridge stack product itself, the method of vertical bending using a manual jig (using a beveled bending knife at the bending point) can easily scratch the plating layer at the bending point during the bending process, causing copper material to leak out, thereby affecting product quality, and the beveled bending knife may cause the pins to be pulled out during the process of pressing down on the bent pins, causing the chip pins to be pulled out and then damage the chip, affecting product quality.
[0005] In view of this, how to solve the problem that the pins of the diode chip may be damaged when the conventional bending jig is used to bend the pins of the diode chip has become a topic to be studied and solved by the present utility model. Utility Model Content
[0006] The utility model aims to provide a bending jig and bending equipment suitable for diode bridge products, which are used to solve the problems that the pins and chips may be damaged when the existing traditional bending jigs are used to bend the pins of diode chips.
[0007] To achieve the above objectives, in the first aspect, the utility model proposes a bending jig suitable for diode bridge products, which is used for bending pins in diode bridge products. The innovation is:
[0008] The bending jig comprises a lower template, a guide assembly, an upper template, and a bending foot assembly.
[0009] A bent foot lower mold for installing the product is arranged above the lower mold plate.
[0010] The guide assembly comprises a guide column which is installed between the lower template and the upper template.
[0011] The bending foot assembly includes a bending foot upper tool seat, a pressure wheel shaft, and a roller. The bending foot upper tool seat is installed below the upper template. There are mounting parts on both sides below the bending foot upper tool seat. The pressure wheel shaft is installed between the two mounting parts. A roller corresponding to the pin of the product and used for rolling and bending the pin is rotatably installed in the pressure wheel shaft.
[0012] To achieve the above-mentioned object, in a second aspect, the present utility model provides a bending device, which includes a machine platform, a bending drive assembly and a bending jig as described in the first aspect of the present utility model.
[0013] The relevant contents of this utility model are explained as follows:
[0014] 1. In the above technical scheme of the utility model, the bending foot component in the bending jig is mainly improved and designed, wherein a bending foot upper knife seat, a pressure wheel shaft and a roller are arranged in the bending foot component, and a roller corresponding to the pin of the product is rotatably installed in the pressure wheel shaft for rolling and bending the pin. When bending the pins in the diode bridge stack products, the guide column of the three-template Yang guide assembly is pressed downward, and the roller in the bending foot assembly rolls downward to press the pin, and then the pin is bent into place. Compared with the traditional bevel bending knife method, its advantage is that the rolling roller can reduce the friction on the lead when pressing down, and it is not easy to damage the pin plating, and there will be no force to pull the pin outward, thereby avoiding pulling the chip, thereby improving the bending quality and improving the product quality.
[0015] 2. In the technical solution of the first aspect above, the bottom of the mounting portion is semicircular, and the radius of the semicircular bottom of the mounting portion is the same as the radius of the roller, so that the lower end of the upper tool holder of the bent foot can also match the lower molds of the bent foot of different sizes, making the downward movement of the bent foot assembly smoother.
[0016] 3. In the technical solution of the first aspect above, the guide assembly also includes a guide sleeve, which is fixedly mounted on the upper template, and the lower end of the guide sleeve is fixed on the lower template. The upper end of the guide column passes through the guide sleeve and then guides the lower template and the upper template, so as to make the guiding of the lower template and the upper template more reasonable and accurate, thereby improving the bending quality.
[0017] 4. In the technical solution of the first aspect above, there are multiple pins in the diode bridge stack product, the number of the rollers is consistent with the number of the pins, and the positions of the rollers and the pins correspond one to one. Each roller bends the corresponding pin to avoid deviation and pulling, thereby further improving the bending quality and efficiency.
[0018] 5. In the technical solution of the first aspect above, the bending foot assembly also includes a pressure plate, which is floatingly installed below the upper template relative to the bending foot upper tool holder. When pressed down, the bending foot upper tool holder continues to move downward after the pressure plate presses against the lead-out portion of the pin, thereby preventing the diode bridge stack product from being displaced during the bending process after being installed in the bending foot lower mold.
[0019] 6. In the technical solution of the first aspect above, the pressure plate is floatingly installed in the support, and a downward limiting surface is provided on the support. Corresponding to the limiting surface, an upward limiting portion is provided on the knife seat on the bent foot, and the limiting surface and the limiting portion are abutted against each other to limit the downward displacement of the support and the pressure plate.
[0020] 7. In the technical solution of the second aspect above, the bending drive assembly is one of a manual pressing assembly, a pneumatic pressing assembly, a hydraulic pressing assembly or an electric pressing assembly.
[0021] 8. In the technical solution of the second aspect above, the bending drive assembly adopts a manual pressing assembly, and the bending drive assembly includes a driving handle and a pressing cylinder, and the lower end of the pressing cylinder is fixedly connected to the upper template.
[0022] 9. In this utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0023] 10. In the present utility model, the orientation or position relationship indicated by the terms "upper", "lower", "bottom", "inside", "outside", etc. is based on the orientation or position assembly relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
[0024] 11. In addition, in the description of the present invention, it should be noted that if the words "first", "second" and so on are used in this document to limit components, those skilled in the art should know that the use of the words "first", "second" and so on is only for the convenience of describing the present invention and simplifying the description. If not otherwise stated, the above words have no special meaning.
[0025] Due to the application of the above scheme, the utility model has the following advantages and effects compared with the prior art:
[0026] The above scheme of the utility model is mainly achieved by improving the design of the bending foot component in the bending jig, wherein a bending foot upper tool seat, a pressure wheel shaft and a roller are arranged in the bending foot component, and a roller corresponding to the pin of the product is rotatably installed in the pressure wheel shaft for rolling and bending the pin. When bending the pins in the diode bridge stack products, the guide column of the three-template Yang guide assembly is pressed downward, and the roller in the bending foot assembly rolls downward to press the pin, and then the pin is bent into place. Compared with the traditional oblique bending method, its advantage is that the friction on the lead can be reduced when the rolling roller is pressed down, and it is not easy to damage the pin plating, and there will be no force to pull the pin outward, thereby avoiding pulling the chip, thereby improving the bending quality and improving the product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of an existing traditional bending jig;
[0028] Figure 2 It is a three-dimensional schematic diagram of the first embodiment of the utility model;
[0029] Figure 3 It is a side schematic diagram of the first embodiment of the utility model;
[0030] FIG. 4A to FIG. 4D It is a schematic diagram of the bending process in the first embodiment of the present utility model;
[0031] Figure 5 It is a three-dimensional schematic diagram of the second embodiment of the utility model (viewing angle 1);
[0032] Figure 6 It is a three-dimensional schematic diagram of the second embodiment of the utility model (viewing angle 2);
[0033] Figure 7 It is a side view of the second embodiment of the utility model.
[0034] The various parts of the above drawings are shown as follows:
[0035] 1. Lower template; 11. Bend foot lower template;
[0036] 2. Guide assembly; 21. Guide column; 22. Guide sleeve;
[0037] 3. Put on the template;
[0038] 4. Bend foot assembly;
[0039] 41. bent foot upper knife seat; 411. mounting portion; 412. limiting portion;
[0040] 42. Pressure wheel shaft;
[0041] 43. Roller;
[0042] 44. Press plate;
[0043] 45, support; 451, limit surface;
[0044] 5. Machine;
[0045] 6. Bending drive assembly 61. Driving handle; 62. Pressing cylinder;
[0046] 8. Oblique bending knife;
[0047] 9. Product; 91. Pin. DETAILED DESCRIPTION
[0048] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0049] Embodiment 1, as Figure 1 , Figure 2 As shown, the first embodiment of the utility model discloses a bending jig suitable for diode bridge stack products, which is used for bending pins 91 in diode bridge stack products. The bending jig includes a lower template 1, a guide assembly 2, an upper template 3, and a bending foot assembly 4. A bending foot lower mold 11 for mounting the product 9 is arranged above the lower template 1. The guide assembly 2 includes a guide column 21, and the guide column 21 is installed between the lower template 1 and the upper template 3. The bending foot assembly 4 includes a bending foot upper knife seat 41, a pressure wheel shaft 42, and a roller 43. The bending foot upper knife seat 41 is installed below the upper template 3. There are mounting portions 411 on both sides below the bending foot upper knife seat 41. The pressure wheel shaft 42 is installed between the two mounting portions 411. A roller 43 corresponding to the pin 91 of the product 9 and used for rolling and bending the pin 91 is rotatably installed in the pressure wheel shaft 42.
[0050] Through the implementation of the first embodiment of the utility model, the bending foot component 4 in the bending jig is improved and designed, wherein a bending foot upper knife seat 41, a pressure wheel shaft 42, and a roller 43 are set in the bending foot component 4, and a roller 43 corresponding to the pin 91 of the product 9 is rotatably installed in the pressure wheel shaft 42 for rolling and bending the pin 91. When bending the pin 91 in the diode bridge stack product, the guide column 21 of the three-template Yang guide component 2 is pressed downward, and the roller 43 in the bending foot component 4 rolls downward to press the pin 91, and then the pin 91 is bent into place. Compared with the traditional bevel bending knife 8, its advantage is that when the rolling roller 43 is pressed down, the friction on the lead can be reduced, and it is not easy to damage the plating of the pin 91, and there will be no force to pull the pin 91 outward, thereby avoiding pulling the chip, thereby improving the bending quality and the quality of the product 9.
[0051] In the first embodiment of the present invention, the bottom of the mounting portion 411 is semicircular, and the radius of the semicircular bottom of the mounting portion 411 is the same as the radius of the roller 43, so that the lower end of the bent foot upper tool holder 41 can also match the bent foot lower mold 11 of different sizes, making the downward movement of the bent foot assembly 4 smoother.
[0052] In the first embodiment of the present utility model, the guide assembly 2 also includes a guide sleeve 22, and the guide sleeve 22 is fixedly mounted on the upper template 3. The lower end of the guide sleeve 22 is fixed on the lower template 1. The upper end of the guide column 21 passes through the guide sleeve 22 and then guides the lower template 1 and the upper template 3, so as to make the guiding of the lower template 1 and the upper template 3 more reasonable and accurate, thereby improving the bending quality.
[0053] In the first embodiment of the present invention, there are multiple pins 91 in the diode bridge stack product, the number of the rollers 43 is consistent with the number of the pins 91, and the positions of the rollers 43 and the pins 91 correspond one to one. Each roller 43 bends the corresponding pin 91 to avoid deviation and pulling, thereby further improving the bending quality and efficiency.
[0054] In the first embodiment of the present invention, Figure 3As shown, the bending foot assembly 4 also includes a pressing plate 44, which is installed in a floating manner below the upper mold plate 3 relative to the bending foot upper knife seat 41. In the downward pressing state, the pressing plate 44 abuts against the lead-out portion of the pin 91 and the bending foot upper knife seat 41 continues to move downward, thereby preventing the diode bridge stack products from being displaced during the bending process after being installed in the bending foot lower mold 11. Specifically, the pressing plate 44 is installed in a floating manner in a support 45, and a downward limiting surface 451 is provided on the support 45. Corresponding to the limiting surface 451, an upward limiting portion 412 is provided on the bending foot upper knife seat 41, and the limiting surface 451 and the limiting portion 412 abut against each other to limit the downward displacement of the support 45 and the pressing plate 44.
[0055] Embodiment 2, as Figure 5 , Figure 6 , Figure 7 As shown, the second embodiment of the present invention proposes a bending device, which includes a machine table 5, a bending drive assembly 6 and a bending jig as described in the first embodiment of the present invention, wherein the bending drive assembly 6 is one of a manual pressing assembly, a pneumatic pressing assembly, a hydraulic pressing assembly or an electric pressing assembly. The bending drive assembly 6 adopts a manual pressing assembly, and the bending drive assembly 6 includes a driving handle 61 and a pressure cylinder 62, and the lower end of the pressure cylinder 62 is fixedly connected to the upper template 3. In this bending device, the lower template 1 is installed on the machine table 5, and the bent foot lower mold 11 on the lower template 1 can be designed to be detachably and replaceably installed in the lower template 1, so as to replace the bent foot lower mold 11 as needed.
[0056] Embodiment 3. Embodiment 3 of the present utility model proposes a bending device, which includes a machine table 5, a bending drive assembly 6 and a bending jig. The bending jig includes a lower template 1, a guide assembly 2, an upper template 3, and a bending foot assembly 4. A bending foot lower template 11 for mounting a product 9 is arranged above the lower template 1. The guide assembly 2 includes a guide column 21 and a guide sleeve 22. The guide sleeve 22 is fixedly mounted on the upper template 3. The lower end of the guide sleeve 22 is fixed on the lower template 1. The upper end of the guide column 21 passes through the guide sleeve 22 and then guides the lower template 1 and the upper template 3; the bending foot assembly 4 includes a bending foot upper knife seat 41, a pressure wheel shaft 42, a roller 43, a pressure plate 44, and a support 45. The bending foot upper knife seat 41 is installed below the upper template 3. The bending foot upper knife seat 41 has mounting parts 411 on both sides below, and the two mounting parts 411 are installed between them. The pressure wheel shaft 42 has a roller 43 rotatably installed in it, which is used to roll and bend the pin 91 of the product 9 and corresponds to the pin 91 of the product 9. There are multiple pins 91 in the diode bridge stack product, and the number of the rollers 43 is consistent with the number of the pins 91, and the positions of the rollers 43 and the pins 91 correspond one by one. The pressure plate 44 is floatingly installed below the upper template 3 relative to the bending foot upper knife seat 41. In the downward pressing state, the bending foot upper knife seat 41 continues to move downward after the pressure plate 44 abuts against the lead-out part of the pin 91. The pressure plate 44 is floatingly installed in the support 45. The support 45 is provided with a downward limiting surface 451. Corresponding to the limiting surface 451, an upward limiting portion 412 is provided on the bending foot upper knife seat 41. The limiting surface 451 and the limiting portion 412 abut against each other to constitute a restriction on the downward displacement of the support 45 and the pressure plate 44.
[0057] For reference FIG. 4A to FIG. 4D As shown, the bending process of a diode bridge stack product using the bending fixture in the bending equipment according to the third detailed embodiment of the utility model is described below.
[0058] like Figure 4A As shown, the bent foot assembly 4 is in an upper initial position, and the operator or an external manipulator places the product 9 on the bent foot lower mold 11 of the lower mold plate 1 .
[0059] like Figure 4B As shown, the bending drive assembly 6 drives the upper template 3 and the bending foot assembly 4 below the upper template 3 to move downward, and the bending foot assembly 4 just contacts the pin 91 of the product 9 .
[0060] like Figure 4C As shown, the pressure plate 44 presses against the lead-out portion of the pin 91, and the bending foot upper knife seat 41 continues to move downward under the drive of the upper template 3. At this time, each roller 43 in the bending foot assembly 4 bends the corresponding pin 91 downward, causing the pin 91 to bend and deform.
[0061] like Figure 4D As shown, the upper knife seat 41 of the bent leg continues to move downward under the drive of the upper template 3, so that the pin 91 is completely bent and deformed to 90°, thereby completing the bending operation.
[0062] Subsequently, the upper template 3 and the bending foot component 4 below the upper template 3 are driven upward by the bending drive component 6, so that the bending foot component 4 is separated from the product 9 by a certain distance and the product 9 can be taken out.
[0063] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.
Claims
1. A bending jig suitable for diode bridge products, used for bending pins (91) in diode bridge products, characterized in that: The bending jig comprises a lower template (1), a guide assembly (2), an upper template (3), and a bending foot assembly (4); A bent foot lower mold (11) for mounting the product (9) is arranged above the lower mold plate (1); The guide assembly (2) comprises a guide post (21), and the guide post (21) is installed between the lower template (1) and the upper template (3); The bending foot assembly (4) comprises a bending foot upper knife seat (41), a pressure wheel shaft (42), and a roller (43); the bending foot upper knife seat (41) is installed below the upper template (3); the bending foot upper knife seat (41) has mounting parts (411) located on both sides below; the pressure wheel shaft (42) is installed between the two mounting parts (411); a roller (43) corresponding to the pin (91) of the product (9) and used for rolling and bending the pin (91) is rotatably installed in the pressure wheel shaft (42).
2. The bending jig for diode bridge products according to claim 1, characterized in that: The bottom of the mounting portion (411) is semicircular, and the radius of the semicircular bottom of the mounting portion (411) is the same as the radius of the roller (43).
3. The bending jig for diode bridge products according to claim 1, characterized in that: The guide assembly (2) further comprises a guide sleeve (22), wherein the guide sleeve (22) is fixedly mounted on the upper template (3), the lower end of the guide sleeve (22) is fixed on the lower template (1), and the upper end of the guide column (21) passes through the guide sleeve (22) and then guides and acts on the lower template (1) and the upper template (3).
4. The bending jig for diode bridge products according to claim 1, characterized in that: The diode bridge stack product has a plurality of pins (91), the number of the rollers (43) is consistent with the number of the pins (91), and the positions of the rollers (43) and the pins (91) correspond one to one.
5. The bending jig for diode bridge products according to claim 1, characterized in that: The bending foot assembly (4) also includes a pressure plate (44), and the pressure plate (44) is installed in a floating manner below the upper mold plate (3) relative to the bending foot upper knife seat (41). In a downward pressing state, the bending foot upper knife seat (41) continues to move downward after the pressure plate (44) presses against the lead-out portion of the pin (91).
6. The bending jig for diode bridge products according to claim 5, characterized in that: The pressure plate (44) is floatingly installed in the support (45), and a downward limiting surface (451) is provided on the support (45). An upward limiting portion (412) is provided on the bent foot upper knife seat (41) corresponding to the limiting surface (451). The limiting surface (451) and the limiting portion (412) are abutted against each other to limit the downward displacement of the support (45) and the pressure plate (44).
7. A bending device, characterized in that: The bending equipment comprises a machine platform (5), a bending drive assembly (6) and a bending jig according to any one of claims 1 to 6.
8. The bending device according to claim 7, characterized in that: The bending drive assembly (6) is one of a manual pressing assembly, a pneumatic pressing assembly, a hydraulic pressing assembly or an electric pressing assembly.
9. The bending device according to claim 8, characterized in that: The bending drive assembly (6) adopts a manual pressing assembly, and the bending drive assembly (6) comprises a driving handle (61) and a pressing cylinder (62), wherein the lower end of the pressing cylinder (62) is fixedly connected to the upper template (3).