Pin shaping clamp for TO base

Abstract

The utility model belongs to the technical field of electronic component processing, and particularly relates to a pin shaping clamp for a TO base, which comprises a positioning plate and a guide block. A positioning groove is formed in one surface of the positioning plate; the right end of the guide block is inserted into the positioning groove and is fixedly connected with the positioning plate; a plurality of first positioning through holes are formed in the left surface of the guide block; the diameter of the first positioning through hole is gradually reduced from left to right; a plurality of second positioning through holes are formed in the groove bottom of the positioning groove; the diameter of the rightmost part of the first positioning through hole is the same as that of the second positioning through hole; the number of the first positioning through holes is the same as that of the second positioning through holes; and the plurality of first positioning through holes and the plurality of second positioning through holes are in one-to-one correspondence in the left-right direction. According to the utility model, the pin shaping efficiency of the TO base can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic component processing, and in particular relates to a pin shaping fixture for a TO base. Background Art

[0002] The existing pin shaping fixture consists of a metal fixture and a plastic guide block. The metal fixture is 5.00mm thick and is designed with a through hole that is consistent with the arrangement of the base pins and 0.15mm larger than the pin diameter. The thickness of the plastic guide block is equal to the final length of the pin minus the thickness of the positioning through hole on the positioning plate. It is designed with a through hole that is 3.00mm larger than the diameter of the circle surrounded by the base pins.

[0003] During use, the base is first inserted into the guide block hole, then into the metal fixture hole. The excess pins are then directly cut off using a cutting tool. Due to the bent or tilted pins, as well as the large number and dense arrangement of pins, repeated alignment with the metal fixture holes is required during operation. This results in burrs, scratches, and barbs within 5.00 mm of the base pin ends on approximately 80% of the bases, failing to meet customer requirements. Furthermore, to ensure quality, the operation requires extreme caution, and cutting a single base pin takes approximately one minute, resulting in inefficient shaping. Utility Model Content

[0004] In order to solve the problems existing in the background technology, the utility model provides a pin shaping fixture for a TO base, comprising: a positioning plate and a guide block; a positioning groove is provided on one surface of the positioning plate; the right end of the guide block is inserted into the positioning groove and fixedly connected to the positioning plate; a plurality of first positioning through holes are provided on the left surface of the guide block; the diameter of the first positioning through holes gradually decreases from left to right; a plurality of second positioning through holes are provided at the bottom of the positioning groove; the diameter of the first positioning through hole at the rightmost side is the same as the diameter of the second positioning through hole; the number of the first positioning through holes and the second positioning through holes is the same; the plurality of first positioning through holes and the plurality of second positioning through holes correspond one to one on the left and right.

[0005] Preferably, the diameter of the second positioning through hole is 0-0.2 mm larger than the diameter of the TO base pin.

[0006] Preferably, the length of the TO base pin is greater than the sum of the depth of the first positioning through hole and the depth of the second positioning through hole.

[0007] Preferably, the depth of the second positioning through hole is less than or equal to 1 mm.

[0008] Preferably, the plurality of first positioning through holes, the plurality of second positioning through holes and the pin arrangement of the TO base are consistent.

[0009] Preferably, the number of the first positioning through holes, the number of the second positioning through holes and the number of pins of the TO base are the same.

[0010] The utility model has at least the following beneficial effects

[0011] The present invention provides a positioning groove on one surface of a positioning plate, so that the right end of the guide block is inserted into the positioning groove and fixedly connected to the positioning plate, facilitating the insertion of pins, thereby facilitating subsequent pin shaping. By gradually reducing the diameter of the first positioning through-hole from left to right and making the number and arrangement of the first and second positioning through-holes the same, it is convenient for the pins of the TO base to be inserted from the left end of the guide block and pass through from the right side of the positioning plate, thereby achieving pin fixation of the TO base and achieving precise positioning. By gradually reducing the diameter of the first positioning through-hole from left to right, it is convenient to insert the TO tube socket pins and also makes the insertion and guidance of the pins smoother. This design not only simplifies the operation process, but also improves the work efficiency of the shaping process. The solution is more effective for multi-pin bases with small spacing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the planed surface of Example 1 of the present utility model;

[0013] Figure 2 This is a schematic diagram of the planed surface of Example 2 of the present utility model;

[0014] Figure 3 This is a schematic diagram of the planed surface of Example 3 of the present utility model;

[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] The reference numerals in the figures are:

[0017] 1. Positioning plate, 11. Positioning groove, 12. Second positioning through hole, 2. Guide block, 21. First positioning through hole. DETAILED DESCRIPTION

[0018] The following describes the embodiments of the present invention by means of specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0019] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the dimensions of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0020] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The present invention provides a pin shaping fixture for a TO base, comprising: a positioning plate 1 and a guide block 2; a positioning groove 11 is provided on one surface of the positioning plate 1; the right end of the guide block 2 is inserted into the positioning groove 11 and fixedly connected to the positioning plate 1; a plurality of first positioning through holes 21 are provided on the left surface of the guide block 2; the diameter of the first positioning through holes 21 gradually decreases from left to right; a plurality of second positioning through holes 12 are provided at the bottom of the positioning groove 11; the diameter of the first positioning through hole 21 at the rightmost side is the same as the diameter of the second positioning through holes 12; the number of the first positioning through holes 21 and the second positioning through holes 12 is the same; the plurality of first positioning through holes 21 and the plurality of second positioning through holes 12 correspond to each other one by one on the left and right.

[0022] In this embodiment, the positioning plate 1 is made of cylindrical plastic. In embodiment 1, the diameter of the first positioning through hole 21 gradually decreases from left to right, and the first positioning through hole 21 is in the shape of a truncated cone. In embodiment 2, the diameter of the first positioning through hole 21 gradually decreases from left to right, and the first positioning through hole 21 is similar to a cascade of multiple truncated cones, with chamfers used to transition between adjacent two truncated cones. For details, please refer to Figure 1 、 Figure 2 and Figure 3As shown; in Example 3, the first positioning through hole 21 is similar to a cascade of multiple cylinders, and the transition between two adjacent cylinders is achieved by chamfering; in this embodiment, the diameter of the left side of the first positioning through hole 21 is defined as ΦL, and the diameter of the right side of the first positioning through hole 21 is defined as ΦR. The diameter ΦL is much larger than the pin of the TO tube seat, generally 3 to 5 mm larger, and ΦR is 0 to 0.2 mm larger than the diameter of the TO base pin.

[0023] Preferably, the diameter of the second positioning through hole 12 is 0-0.2 mm larger than the diameter of the TO base pin.

[0024] In this embodiment, the pin cutting process still requires alignment within the metal hole, resulting in approximately 70% scratches within 1mm of the pin, which still cannot meet production requirements. Therefore, the internal structure of the guide block 2 is changed, so that the diameter of the first positioning hole 21 on the far right is the same as the diameter of the second positioning hole 12. The diameter of the first positioning hole 21 is gradually reduced from left to right, and the diameter of the hole through which the pin passes is only 0.20mm larger than the pin diameter. This not only reduces the processing difficulty but also facilitates pin insertion and guidance. The TO base pin is first positioned by the plastic guide block 2 to ensure that the pin can be vertically inserted into the positioning plate 1. As a result, the pin scratches are reduced to less than 5%, and the pin cutting efficiency is increased from 1 minute / pin to 20 seconds / pin, a three-fold increase.

[0025] Preferably, the length of the TO base pin is greater than the sum of the depth of the first positioning through hole 21 and the depth of the second positioning through hole 12 .

[0026] Preferably, the depth of the second positioning through hole 12 is less than or equal to 1 mm.

[0027] In this embodiment, in order to reduce the contact area between the TO base pin and the positioning plate 1 and shorten the positioning length of the positioning plate 1 for the pin, the thickness of the positioning plate 1 is reduced from 5 mm to 1 mm, thereby controlling the scratch area within 1 mm. After the 1 mm is passed out of the positioning plate 1, the protruding part is cut off by a tool, resulting in a TO base pin with almost no scratches.

[0028] Preferably, the plurality of first positioning through holes 21 , the plurality of second positioning through holes 12 and the pin arrangement of the TO base are consistent.

[0029] In this embodiment, the plurality of first positioning through holes 21, the plurality of second positioning through holes 12 and the pins of the TO base are arranged in the same manner to facilitate the sequential insertion of the pins of the TO base into the guide block 2 and the positioning plate 1. Because the plurality of second positioning through holes 12 and the plurality of first positioning through holes 21 correspond to each other left and right, the pins of the TO base can be correspondingly inserted into the plurality of first positioning through holes 21, which facilitates smoother pin guidance and improves shaping efficiency.

[0030] It should be noted that the number of pins of the TO base is less than or equal to the number of the first positioning through holes 21 or the second positioning through holes 12. When the number of pins of the TO base is equal to the number of the first positioning through holes 21 or the second positioning through holes 12, the arrangement of the multiple first positioning through holes 21, the multiple second positioning through holes 12 and the pins of the TO base are consistent; when the number of pins of the TO base is less than the number of the first positioning through holes 21 or the second positioning through holes 12, the arrangement of some of the multiple first positioning through holes 21 and the multiple second positioning through holes 12 is consistent with the pin arrangement of the TO base.

[0031] Preferably, the number of the first positioning through holes 21 , the number of the second positioning through holes 12 and the number of the pins of the TO base are the same.

[0032] The usage of this utility model:

[0033] In this utility model, the technical solution adopted by taking the MBCY012-P14 base as an example is as follows:

[0034] First, insert the MBCY012-P14 base into the first positioning through hole 21 of the guide block. The diameter of the first positioning through hole 21 gradually decreases from left to right to facilitate the insertion of the pin. The hole diameter at the end of the first positioning through hole 21 is only 0.2 mm larger than the pin, which can play a role in positioning the pin. The base pin is inserted into the second positioning through hole 12 of the positioning plate 1. Because the pin has been positioned in the guide block 2, even if the pin is bent, it can avoid collision with the second positioning through hole 12 in the fixture and scratching the pin.

[0035] Then, fix the positioning plate 1 on the guillotine, press the cutter to cut off the excess pins extending from the second positioning through hole 12, and then remove the base to complete the pin shaping. This technical solution can be extended to TO bases with more pins.

[0036] In summary, by optimizing the fixture structure, this application significantly improves the reliability of the pin shaping process. Holes machined into the metal fixture that match the TO base pin arrangement, along with its unique second positioning through-hole design, effectively reduce the contact length between the positioning plate and the TO base pins. This ensures positioning while reducing the length of scratches and barbs on the pins from 5mm to within 1mm. This design not only improves the quality of pin shaping but also reduces the likelihood of pin damage, ensuring the integrity and functionality of the pins after shaping.

[0037] In summary, the present invention provides a positioning groove on one surface of the positioning plate, so that the right end of the guide block is inserted into the positioning groove and fixedly connected to the positioning plate, which facilitates the insertion of the pins, thereby facilitating the subsequent pin shaping; by gradually reducing the diameter of the first positioning through-hole from left to right, and setting the number and arrangement of the first positioning through-hole and the second positioning through-hole to be the same, it is convenient for the pins of the TO base to be inserted from the left end of the guide block and pass through from the right side of the positioning plate, thereby achieving the pin fixation of the TO base, and achieving precise positioning. By gradually reducing the diameter of the first positioning through-hole from left to right, it is convenient to insert the TO tube base pins, and also makes the insertion and guiding of the pins smoother. This design not only simplifies the operation process, but also improves the work efficiency of the shaping process, and this solution is more effective for multi-pin bases with small spacing.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.

Claims

1. A pin shaping fixture for a TO base, characterized in that: include: A positioning plate (1) and a guide block (2); a positioning groove (11) is provided on one surface of the positioning plate (1); the right end of the guide block (2) is inserted into the positioning groove (11) and fixedly connected to the positioning plate (1); a plurality of first positioning through holes (21) are provided on the left surface of the guide block (2); the diameter of the first positioning through holes (21) gradually decreases from left to right; a plurality of second positioning through holes (12) are provided at the bottom of the positioning groove (11); the diameter of the first positioning through hole (21) at the rightmost side is the same as the diameter of the second positioning through hole (12); the number of the first positioning through holes (21) and the number of the second positioning through holes (12) are the same; the plurality of first positioning through holes (21) and the plurality of second positioning through holes (12) correspond to each other left to right.

2. A pin shaping fixture for a TO base according to claim 1, characterized in that: The diameter of the second positioning through hole (12) is 0-0.2 mm larger than the diameter of the TO base pin.

3. A pin shaping fixture for a TO base according to claim 1, characterized in that: The length of the TO base pin is greater than the sum of the depth of the first positioning through hole (21) and the depth of the second positioning through hole (12).

4. The pin shaping fixture for a TO base according to claim 1, characterized in that: The depth of the second positioning through hole (12) is less than or equal to 1 mm.

5. The pin shaping fixture for a TO base according to claim 1, characterized in that: The plurality of first positioning through holes (21), the plurality of second positioning through holes (12) and the pins of the TO base are arranged in a consistent manner.

6. The pin shaping fixture for a TO base according to claim 1, characterized in that: The number of the first positioning through holes (21), the number of the second positioning through holes (12) and the number of pins of the TO base are the same.

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