A needle dispensing fixing fixture

Abstract

This utility model relates to a needle dispensing and fixing fixture. It includes a fixture base, a top cover, a fixture ejector pin, a fixture spring, a needle holder, and a needle. The top of the fixture base has several sets of mounting slots for placing the fixture ejector pin and the needle holder. The top cover is fitted onto the top of the fixture base and is fixedly connected to the fixture base. The fixture ejector pin passes through the top cover, with its lower end corresponding to the mounting slot. The fixture spring is sleeved on the fixture ejector pin, with one end abutting against the fixture ejector pin and the other end abutting against the top cover and the fixture base. A needle is mounted on one end of the needle holder, and the needle holder is installed in the corresponding mounting slot. One end of the fixture ejector pin passes through the inner cavity of the needle holder and abuts against the needle. This invention solves the technical problems of existing needle dispensing and fixing methods, which mainly rely on manual visual inspection and manual operation, resulting in needle holder misalignment, inconsistent needle depth, low efficiency, and difficulty in batch operations.

Description

Technical Field

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

[0002] In the field of dispensing processes, precise needle positioning is a key factor in ensuring dispensing quality, especially the fixation of the needle seat and the control of the needle depth, which directly affect the consistency of dispensing and the product qualification rate.

[0003] In existing technologies, the dispensing and fixing of needles mainly relies on visual inspection and manual operation: operators visually observe the placement of the needle hub, manually adjust the insertion depth of the needle, and then perform dispensing and curing. This method has obvious drawbacks:

[0004] 1. Poor consistency: Manual operation is affected by factors such as experience and fatigue. Different operators or the same operator at different times will have different results, which will lead to needle seat position deviation and inconsistent needle depth, ultimately affecting dispensing accuracy and product quality stability.

[0005] 2. Low efficiency: The positioning and fixing of a single needle needs to be done manually one by one, which is time-consuming and difficult to adapt to the needs of large-scale production;

[0006] 3. Difficulty in batch operation: The needles after manual positioning cannot be arranged uniformly and neatly, which is not convenient for batch dispensing operations; and after dispensing, due to the scattered placement of the needles, it is difficult to carry out subsequent processing such as light curing, which further restricts production efficiency. Utility Model Content

[0007] This application provides a needle dispensing and fixing fixture, which solves the technical problems in the prior art where needle dispensing and fixing mainly relies on manual visual inspection and manual operation. This operation method has problems such as needle seat position displacement, inconsistent needle depth, low efficiency, and difficulty in batch operation.

[0008] The technical solutions adopted in the embodiments of this application are as follows.

[0009] A needle dispensing fixing fixture includes a fixture base, a top cover, a fixture ejector pin, a fixture spring, a needle holder, and a needle tube. The top of the fixture base has several sets of mounting slots for placing the fixture ejector pin and the needle holder. The top cover is fitted onto the top of the fixture base and is fixedly connected to it. The fixture ejector pin passes through the top cover, with its lower end corresponding to a mounting slot. The fixture spring is sleeved on the fixture ejector pin, with one end abutting against the ejector pin and the other end abutting against the top cover and the fixture base. The needle tube is mounted on one end of the needle holder, and the needle holder is installed in the corresponding mounting slot. One end of the fixture ejector pin passes through the inner cavity of the needle holder and abuts against the needle tube. Through the cooperation of the fixture ejector pin and the fixture spring, the needle holder placed in the mounting slot can be fixed, and the needle tube depth can be positioned.

[0010] As a further improvement to the above technical solution:

[0011] A further technical solution is that the mounting slots are provided in several groups and are distributed in a linear array on the tooling base.

[0012] A further technical solution is that the upper cover and the tooling base are detachably connected by bolts.

[0013] A further technical solution is that the tooling pin can be pulled axially and can automatically reset under the elastic force of the tooling spring.

[0014] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0015] 1. By employing a tooling base, top cover, tooling ejector pin, tooling spring, needle holder, and needle, the mechanical cooperation between the tooling ejector pin and the mounting slot replaces manual visual inspection and adjustment, achieving standardized positioning of the needle holder position and needle depth. This significantly reduces errors caused by individual differences and improves product quality consistency. Positioning a single needle requires only three simple steps: "pull the ejector pin - place the needle holder - release the ejector pin," making it quick and easy to operate. It also supports batch positioning of multiple needles, significantly improving overall production efficiency in conjunction with subsequent batch dispensing and curing processes. The linear array mounting slot design adapts to the operating paths of automated dispensing and curing equipment, reducing manual intervention during process changes and providing hardware support for large-scale mass production. The use of metal materials and a spring-ejector pin linkage structure ensures that the tooling is not easily deformed or worn during long-term use, maintaining stable positioning performance and reducing equipment maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a needle dispensing and fixing fixture in this utility model.

[0017] Figure 2 This is an exploded view of the overall structure of a needle dispensing and fixing fixture according to this utility model.

[0018] Figure 3 This is a partial structural cross-sectional view of the tooling ejector pin used in this utility model.

[0019] In the diagram: 1. Fixture base; 11. Mounting slot; 2. Top cover; 3. Fixture ejector pin; 4. Fixture spring; 5. Needle holder; 6. Needle; 7. Bolt. Detailed Implementation

[0020] This application provides a needle dispensing and fixing fixture, which solves the technical problems in the prior art where needle dispensing and fixing mainly relies on manual visual inspection and manual operation. This operation method has problems such as needle seat position displacement, inconsistent needle depth, low efficiency, and difficulty in batch operation.

[0021] The technical solution in this application embodiment is to solve the above problems, and the overall idea is as follows:

[0022] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0023] A needle dispensing fixing fixture, such as Figure 1 , Figure 2 and Figure 3 As shown, the fixture includes a tooling base 1, a top cover 2, a tooling pin 3, a tooling spring 4, a needle holder 5, and a needle tube 6. The tooling base 1 has several sets of mounting slots 11 on its top for placing the tooling pin 3 and the needle holder 5. The top cover 2 is fitted onto the top of the tooling base 1 and is fixedly connected to it. The tooling pin 3 passes through the top cover 2, with its lower end corresponding to the mounting slot 11. The tooling spring 4 is sleeved on the tooling pin 3, with one end abutting against the tooling pin 3 and the other end abutting against the top cover 2 and the tooling base 1. A needle tube 6 is mounted on one end of the needle holder 5, and the needle holder 5 is installed in the corresponding mounting slot 11. One end of the tooling pin 3 passes through the inner cavity of the needle holder 5 and abuts against the needle tube 6. Through the cooperation of the tooling pin 3 and the tooling spring 4, the needle holder 5 placed in the mounting slot 11 can be fixed, and the depth of the needle tube 6 can be positioned.

[0024] The mounting slots 11 are provided in several groups and are distributed in a linear array on the tooling base 1.

[0025] The top cover 2 and the tooling base 1 are detachably connected by bolts 7.

[0026] The tooling pin 3 can be pulled axially and can automatically reset under the elastic force of the tooling spring 4.

[0027] Tooling base 1: Made of aluminum alloy, it has good rigidity and stability. The top is machined with 10 sets of mounting grooves 11 arranged in a straight line. The shape of the mounting grooves 11 matches the bottom contour of the needle tube seat 5, which can initially limit the needle tube seat 5 and prevent it from shifting laterally.

[0028] Top cover 2: Also made of aluminum alloy, it is fixedly connected to the tooling base 1 by 4 sets of bolts 7. After the cover is closed, it forms a closed positioning space with the tooling base 1 to ensure the stability of the overall structure.

[0029] Tooling pin 3: Made of hard alloy material, with high hardness and strong wear resistance. Its lower end is designed as a conical structure that fits into the groove on the top of the needle tube seat 5, which can not only fit tightly into the needle tube seat 5 for fixation, but also accurately control the extension depth of the needle tube 6 by abutting against the top of the needle tube 6.

[0030] Tooling spring 4: Made of stainless steel, it is fitted on the upper part of tooling pin 3. One end abuts against the boss of tooling pin 3, and the other end abuts against the inner wall of the upper cover 2, providing continuous downward pressure for tooling pin 3.

[0031] When the needle holder 5 is placed in the mounting groove 11, the tooling pin 3 presses the needle holder 5 under the action of spring force, and at the same time its lower end abuts against the top of the needle tube 6, realizing the function of "one-time fixing to complete dual positioning".

[0032] Operating procedures

[0033] S1. Preparation stage: Check whether all parts of the tooling are intact, ensure that the tooling ejector pin 3 can be pulled flexibly, the spring returns to normal, and there are no impurities in the mounting groove 11.

[0034] S2, Pull the ejector pin: Manually pull the tooling ejector pin 3 upwards until there is enough space between the bottom of the maximum stroke and the mounting groove 11. At this time, the tooling spring 4 is compressed and stored.

[0035] S3. Place the needle holder: Align the needle holder 5 (with the pre-installed needle 6) with the mounting groove 11 of the tooling base 1 and place it smoothly into the groove, ensuring that the bottom of the needle holder 5 is in contact with the bottom surface of the mounting groove 11.

[0036] S4. Fixing and Positioning: Slowly release the tooling pin 3. Under the elastic force of the tooling spring 4, the pin automatically returns to its original position downwards. Its lower end is embedded in the top groove of the needle tube seat 5 and pressed tightly, while pressing against the top of the needle tube 6, thus completing the fixing of the needle tube seat 5 and the positioning of the depth of the needle tube 6.

[0037] S5. Batch operation: Repeat steps 2-4 to place and fix the needle tube seat 5 in the remaining mounting slots 11 until all the workpieces to be processed are positioned.

[0038] S6. Dispensing and Curing: Transfer the entire tooling to the dispensing equipment and dispense adhesive uniformly onto the needles after batch positioning; after dispensing, there is no need to remove the needles, and the tooling can be directly transferred to the photocuring equipment for batch curing.

[0039] S7. Removal: After curing, pull the tooling ejector pin 3 again to remove the processed needle from the mounting slot 11.

[0040] Beneficial effects

[0041] The mechanical interaction between the tooling ejector pin 3 and the mounting slot 11 replaces manual visual inspection and adjustment, achieving standardized positioning of the needle seat position and needle depth. This significantly reduces errors caused by individual differences and improves product quality consistency. Positioning a single needle requires only three simple steps: "pull the ejector pin - place the needle seat - release the ejector pin," making it quick and easy to operate. It also supports batch positioning of multiple needles, significantly improving overall production efficiency in conjunction with subsequent batch dispensing and curing processes. The linear array mounting slot 11 design adapts to the operating paths of automated dispensing and curing equipment, reducing manual intervention during process transitions and providing hardware support for large-scale mass production. The use of metal materials and a spring-ejector linkage structure ensures that the tooling is not easily deformed or worn during long-term use, maintaining stable positioning performance and reducing equipment maintenance costs.

[0042] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0043] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A needle dispensing fixing fixture, characterized in that: The fixture includes a fixture base (1), a top cover (2), a fixture ejector pin (3), a fixture spring (4), a needle holder (5), and a needle tube (6). The fixture base (1) has several sets of mounting slots (11) on its top for placing the fixture ejector pin (3) and the needle holder (5). The top cover (2) covers the top of the fixture base (1), and the top cover (2) is fixedly connected to the fixture base (1). The fixture ejector pin (3) passes through the top cover (2), and its lower end corresponds to the position of the mounting slot (11). The fixture spring (4) is sleeved on the fixture. The needle tube (6) is mounted on the ejector pin (3) with one end abutting against the tooling ejector pin (3) and the other end abutting against the upper cover (2) and the tooling base (1); the needle tube (6) is mounted on one end of the needle tube seat (5) and the needle tube seat (5) is installed in the corresponding mounting groove (11); one end of the tooling ejector pin (3) passes through the inner cavity of the needle tube seat (5) and abuts against the needle tube (6); through the cooperation of the tooling ejector pin (3) and the tooling spring (4), the needle tube seat (5) placed in the mounting groove (11) can be fixed and the depth of the needle tube (6) can be positioned.

2. The needle dispensing fixing tool according to claim 1, wherein: The mounting slots (11) are provided in several groups and are distributed in a linear array on the tooling base (1).

3. The needle dispensing fixing tool according to claim 1, wherein: The top cover (2) and the tooling base (1) are detachably connected by bolts (7).

4. The needle dispensing fixing tool according to claim 1, wherein: The tooling pin (3) can be pulled axially and can be automatically reset under the elastic force of the tooling spring (4).

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