A needle insertion fixture

Abstract

This utility model relates to the field of pin insertion fixture technology, and discloses a pin insertion fixture, including a fixed base plate. An avoidance hole is provided on the inner side of the fixed base plate, and a pin installation assembly is disposed inside the avoidance hole. Supports are fixedly connected to the inner sides of both ends of the fixed base plate, and a lifting and pressing assembly is disposed on the top of the support. The lifting and pressing assembly includes a pin pressing punch, which is slidably connected to the inner side of the middle portion of the support. A fixed plate is fixedly connected to the top of the pin pressing punch. In this utility model, the connecting rods at both ends of the fixed plate slide against the inner side of the support, ensuring the straightness of the fixed plate during downward movement and preventing deviation. Limiting posts precisely limit the descent height of the fixed plate, and a return spring ensures that the pin pressing punch accurately returns to its initial position. These designs guarantee the stability of the entire mechanical structure and the consistency and accuracy of each pin insertion operation.

Description

Technical Field

[0001] This utility model relates to the field of needle insertion fixture technology, and in particular to a needle insertion fixture. Background Technology

[0002] Pin insertion fixtures are specialized tooling equipment used in the electronics manufacturing industry to assist in the pin insertion process. Through precise mechanical design, they allow electronic components to be quickly and accurately inserted into the corresponding holes on the target substrate.

[0003] The existing fixtures have poor motion structure design. During the crimping process, the lack of effective guiding and limiting mechanisms can easily lead to the displacement of the crimping components, causing the pins to fail to be inserted vertically into the target substrate, resulting in tilting, misalignment, and other problems, which seriously affect the electrical performance and reliability of the product. On the other hand, most fixtures are only compatible with a single type of pin. When it is necessary to change to pins of different lengths or arrangements during production, the entire fixture must be replaced. This not only increases equipment costs, but also greatly reduces production efficiency due to frequent changes, making it difficult to meet the flexible production needs of multiple varieties and small batches. Therefore, a new pin crimping fixture is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a pin insertion fixture, which aims to improve the problems of easy displacement of the crimping pin component and poor versatility during crimping in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pin insertion fixture includes a fixed base plate, an clearance hole is provided on the inner side of the fixed base plate, a pin installation assembly is provided on the inner side of the clearance hole, and brackets are fixedly connected to the inner sides of both ends of the fixed base plate, and a lifting and pressing assembly is provided on the top of the brackets;

[0007] The lifting and pressing assembly includes a pressure needle punch, which is slidably connected to the inner side of the middle part of the bracket. A fixing plate is fixedly connected to the top of the pressure needle punch, and a driving assembly is provided on the outer side of the end of the fixing plate.

[0008] As a further description of the above technical solution:

[0009] The lifting and pressing assembly also includes two connecting rods, which are respectively fixedly connected to the inner sides of both ends of the fixed plate. Both connecting rods are slidably connected to the inner side of the bracket, and both brackets are fitted with return springs on their outer sides.

[0010] As a further description of the above technical solution:

[0011] The pin mounting assembly includes a pin block, which is installed inside the clearance hole. The clearance hole has multiple insertion holes on its inner side at the end, and the multiple insertion holes are arranged in two rows.

[0012] As a further description of the above technical solution:

[0013] The pin mounting assembly includes multiple pin bodies 1 and multiple pin bodies 2, which are respectively mounted on the inner side of multiple sockets. The multiple pin bodies 1 are arranged in one row, and the multiple pin bodies 2 are arranged in another row.

[0014] As a further description of the above technical solution:

[0015] Two limiting posts are fixedly connected to the top of the bracket, and the fixing plate is disposed on the top side of the two limiting posts;

[0016] As a further description of the above technical solution:

[0017] A stop block is fixedly connected to the bottom of the pressure needle punch, and the stop block is disposed on the side of the plurality of needle bodies one and the plurality of needle bodies two;

[0018] As a further description of the above technical solution:

[0019] The bottom of the pin block has multiple mounting holes, which are securely engaged with the outside of the fixed base plate.

[0020] As a further description of the above technical solution:

[0021] The first pin body is shorter than the second pin body.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the connecting rods at both ends of the fixed plate slide in cooperation with the inner side of the bracket, ensuring the straightness of the fixed plate when it moves downward and avoiding deviation; the limiting post precisely limits the descent height of the fixed plate, and the return spring ensures that the pressure needle punch can accurately return to the initial position. These designs ensure the stability of the entire mechanical structure and the consistency and accuracy of each needle insertion operation.

[0024] 2. In this utility model, the precise cooperation of the fixed base plate, bracket, pin block, and clearance holes ensures a one-to-one correspondence between the pin hole positions and the target substrate hole positions. The abutment block pushes the pins to accurately fall into the corresponding holes, achieving high-precision pin installation and improving product quality and yield. The pin blocks have two rows of insertion holes, allowing for the simultaneous installation of pin bodies of different lengths (pin body 1 and pin body 2), meeting the need for simultaneous crimping of multiple pin specifications. This increases the versatility and flexibility of the fixture, reducing time and cost losses due to fixture replacement. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a pin insertion fixture proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the pressing punch of a pin insertion fixture proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the pin insertion block of a pin insertion fixture proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the insertion hole structure of a pin fixture proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the mounting hole structure of a pin fixture proposed in this utility model.

[0030] Legend:

[0031] 1. Fixed base plate; 2. Bracket; 3. Pressing pin punch; 4. Fixing plate; 5. Connecting rod; 6. Return spring; 7. Limiting post; 8. Pin block; 9. Clearance hole; 10. Abutment block; 11. Pin body one; 12. Pin body two; 13. Insertion hole; 14. Mounting hole. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 and Figure 2 An embodiment of this utility model is provided: a pin insertion fixture, including a fixed base plate 1, an avoidance hole 9 is provided on the inner side of the fixed base plate 1, a pin installation component is provided on the inner side of the avoidance hole 9, a bracket 2 is fixedly connected to the inner sides of both ends of the fixed base plate 1, and a lifting and pressing component is provided on the top of the bracket 2.

[0034] The lifting and pressing assembly includes a pressing needle punch 3, which is slidably connected to the inner side of the middle of the bracket 2. A fixing plate 4 is fixedly connected to the top of the pressing needle punch 3, and a driving component is provided on the outer side of the end of the fixing plate 4. The lifting and pressing assembly also includes two connecting rods 5, which are fixedly connected to the inner sides of both ends of the fixing plate 4. Both connecting rods 5 are slidably connected to the inner side of the bracket 2. When the cylinder of the driving component is activated, it drives the fixing plate 4 to move downward. The connecting rods 5 fixedly connected to the inner sides of both ends of the fixing plate 4 slide in cooperation with the inner side of the bracket 2 to ensure the straightness of the fixing plate 4 during downward movement and avoid deviation, thereby ensuring that the pressing needle punch 3 can press down vertically. The pressing needle punch 3 moves vertically downward along the inner side of the bracket 2 together with the fixing plate 4. A return spring 6 is sleeved on the outer side of both brackets 2. After the needle is pressed, the cylinder removes the force on the fixing plate 4. At this time, the return spring 6 sleeved on the outer side of the bracket 2 stores elastic potential energy due to previous compression, and the spring force begins to exert its effect, pushing the fixing plate 4 upward.

[0035] Reference Figure 1 , Figure 3 and Figure 4 The pin mounting assembly includes a pin block 8, which is installed inside a clearance hole 9. Multiple insertion holes 13 are formed on the inner side of the end of the clearance hole 9, arranged in two rows. The clearance hole 9 and the pin block 8 are precisely matched in size, ensuring a one-to-one correspondence between the pin hole positions and the target substrate hole positions, laying the foundation for accurate subsequent pin insertion. The pin mounting assembly includes multiple pin bodies 11 and multiple pin bodies 12, which are respectively installed inside the multiple insertion holes 13. Pin bodies 11 are arranged in one row, and pin bodies 12 are arranged in another row. Pin bodies 11 are shorter than pin bodies 12. The sockets 13 inside the pin block 8 are arranged in two rows, which are used to install multiple pin bodies 11 and pin bodies 12 respectively. The pin body 11 is shorter than the pin body 12. This design meets the requirement of simultaneous crimping of multiple pin specifications, while the row layout avoids interference between pins.

[0036] Reference Figure 1 , Figure 2 and Figure 5Two limiting posts 7 are fixedly connected to the top of the bracket 2, and the fixing plate 4 is set on the top side of the two limiting posts 7. The function of the two limiting posts 7 is to limit the movement range of the fixing plate 4. When the drive component cylinder drives the fixing plate 4 to move downward to perform the pin crimping operation, the limiting posts 7 can prevent the fixing plate 4 from falling too far, avoiding excessive pressure from the crimping punch 3 on the pin and the target mounting component, which could cause damage. The bottom of the crimping punch 3 is fixedly connected to a stop block 10, which is set on the side of multiple pin bodies 11 and multiple pin bodies 12. The stop block 10 drives the pin bodies 11 and 12 to be inserted into the inner side of the insertion hole 13 on the inner side of the pin block 8 through its groove. Multiple mounting holes 14 are opened at the bottom of the pin block 8, and the multiple mounting holes 14 are securely engaged with the outer side of the fixing base plate 1. The pin block 8 is securely engaged with the clearance hole 9 on the inner side of the fixing base plate 1 through the mounting holes 14 at the bottom.

[0037] Working principle: The drive component cylinder drives the fixed plate 4 downward, synchronously driving the pressure needle punch 3 to press vertically downward along the inner side of the bracket 2. The connecting rod 5 slides with the bracket 2 to ensure the straightness of the fixed plate 4 during movement and prevent deviation; the return spring 6 is sleeved on the outside of the bracket 2. When the drive component removes its force, the spring force pushes the fixed plate 4 back to its original position, realizing the reciprocating motion of the pressure needle punch 3. The limiting post 7 is fixed to the top of the bracket 2 to limit the descent height of the fixed plate 4, thereby achieving precise limitation of the descent stroke of the fixed plate 4 and ensuring the safety and stability of the entire mechanical structure.

[0038] The pin block 8 is engaged with the inner side of the clearance hole 9 in the fixed base plate 1 via the bottom mounting hole 14. The internal insertion holes 13 are arranged in two rows, used for mounting pin body one 11 and pin body two 12 respectively. Pin body one 11 is shorter than pin body two 12; this differentiated design can meet the need for simultaneous crimping of multiple pin specifications, and avoids interference through the row layout. The clearance hole 9 provides mounting space for the pin block 8, and its size precisely matches the pin block 8, ensuring a one-to-one correspondence between the pin hole positions and the target substrate hole positions.

[0039] When the pressure needle punch 3 moves downward with the fixed plate 4, the bottom abutment block 10 contacts the top of the first pin body 11 and the second pin body 12, applying vertical pressure.

[0040] The first pin body 11 and the second pin body 12 are sequentially engaged in the grooves of the abutment block 10. Under the push of the abutment block 10, the first pin body 11 and the second pin body 12 are sequentially engaged in the insertion holes 13 of the pin block 8, allowing the pins to accurately fall into the corresponding holes. After the engagement is complete, the return spring 6 provides a reverse elastic force, causing the pin-pressing punch 3 and the abutment block 10 to rise together, disengaging from the first pin body 11 and the second pin body 12, returning the pin-pressing punch 3 to its initial position, ready for the next pin insertion operation.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pin insertion fixture, comprising a fixed base plate (1), characterized in that: The fixed base plate (1) has an clearance hole (9) on its inner side, and a pin installation assembly is provided on the inner side of the clearance hole (9). The fixed base plate (1) has brackets (2) fixedly connected to the inner sides of both ends, and a lifting and pressing assembly is provided on the top of the brackets (2). The lifting and pressing assembly includes a pressing needle punch (3), which is slidably connected to the inner side of the middle part of the bracket (2). A fixing plate (4) is fixedly connected to the top of the pressing needle punch (3), and a driving assembly is provided on the outer side of the end of the fixing plate (4).

2. The contact pin gripper according to claim 1, characterized in that: The lifting and pressing assembly also includes two connecting rods (5), which are fixedly connected to the inner sides of both ends of the fixed plate (4), and both connecting rods (5) are slidably connected to the inner side of the bracket (2). Both brackets (2) are fitted with reset springs (6) on their outer sides.

3. The contact pin gripper according to claim 1, characterized in that: The pin mounting assembly includes a pin block (8), which is installed inside the clearance hole (9). Multiple insertion holes (13) are provided on the inner side of the end of the clearance hole (9), and the multiple insertion holes (13) are arranged in two rows.

4. The contact pin gripper according to claim 3, characterized in that: The pin mounting assembly includes multiple pin bodies (11) and multiple pin bodies (12). The multiple pin bodies (11) and multiple pin bodies (12) are respectively installed on the inner side of multiple sockets (13). The multiple pin bodies (11) are arranged in one row and the multiple pin bodies (12) are arranged in another row.

5. The contact pin gripper according to claim 1, wherein: The bracket (2) has two limiting posts (7) fixedly connected to its top, and the fixing plate (4) is set on the top side of the two limiting posts (7).

6. The contact pin gripper according to claim 4, characterized in that: The bottom of the pressure needle punch (3) is fixedly connected to a stop block (10), which is disposed on the side of the plurality of needle bodies one (11) and the plurality of needle bodies two (12).

7. The contact pin gripper according to claim 3, wherein: The pin block (8) has multiple mounting holes (14) at its bottom, and the multiple mounting holes (14) are securely engaged with the outside of the fixed base plate (1).

8. The contact pin gripper according to claim 4, wherein: The first pin body (11) is shorter than the second pin body (12).

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