Small part tin brushing jig
By designing a cylinder-clamped interchangeable tray, the problems of complex operation and material contamination and damage associated with traditional fixture trays have been solved. This simplifies the material handling process, reduces the risk of contamination, and shortens turnaround time, thereby improving production efficiency and product quality in the SMT process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional fixture tray designs result in cumbersome material handling steps, extend turnaround time, and increase the risk of material contamination and damage. This is especially true during SMT processes, where small or lightweight materials are prone to sticking to the stencil and being carried off the tray.
Design a small parts soldering fixture that uses a cylinder to clamp interchangeable trays. The fixture uses a cylinder and chuck structure to fix and remove materials, reducing the need for handling. The cylinder clamps the materials, improving the stability of the fixture and preventing materials from sticking to the stencil.
Simplify the material handling process, reduce the risk of material surfaces coming into contact with solder paste, shorten turnaround time, avoid the risk of materials being carried out of the tray after stencil printing, and improve product quality and production efficiency.
Smart Images
Figure CN224097920U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to jig technical field, more specifically, relate to a small spare tin brushing jig. BACKGROUND
[0002] In the electronic manufacturing industry, especially in the surface mount technology (SMT) process, jig trays are used to fix and position materials to ensure their accurate position in processes such as printing, welding, etc. Traditional jig trays usually adopt a "copying fixed type" design, i.e. each tray is fixed and cannot be detached, the materials to be brushed with tin need to be taken out from the tray with tweezers and placed on a turnover box, and then put into the final product.
[0003] Although this design can meet the basic functional requirements, there are many inconveniences and risks in actual operation. This process not only increases the operation steps, but also prolongs the material turnover time, reduces the production efficiency. Moreover, in the process of taking, the appearance of the material is easy to touch the tin paste, which leads to pollution or damage, affecting the product quality. And the material is easy to adhere to the screen plate after screen printing, especially for small size or light weight material, it is easy to be taken out of the tray together, even fall and touch the tin paste, increase the risk of pollution and damage.
[0004] The utility model can reduce the material taking action, reduce the risk of the material appearance touching the tin paste, shorten the material turnover time, and avoid the risk of the material adhering to the screen plate after screen printing and being taken out of the tray. UTILITY MODEL CONTENTS
[0005] The utility model aims at solving the technical problems in the above background art, and provides a small spare tin brushing jig.
[0006] To achieve the above purpose, the utility model provides the following technical scheme: a small spare tin brushing jig, comprising: a base, the left and right ends of the top side of the base are fixedly installed with auxiliary support plates, the middle end of the top side of the base is fixedly installed with a main support plate, the top side of the main support plate is fixedly installed with outer clamping blocks at the front and rear ends, the left and right ends of the middle part of the top side of the main support plate are fixedly installed with inner clamping blocks, the left and right ends of the top side of the base are provided with cylinder grooves, the cylinder grooves are embedded with cylinders, the two cylinders are pneumatic finger cylinders, the cylinders are electrically connected with external manual air valve switches through wires, the rear end of the top side of the auxiliary support plate and the right end of the top side of the main support plate are provided with support positioning holes in opposite positions, positioning pins are fixedly installed in the support positioning holes, a tray is movably installed on the top side of the auxiliary support plate and the main support plate through the positioning pins, eight material grooves are symmetrically provided at equal distances on the top side of the tray at the front and rear ends, the top end of the pneumatic finger of the cylinder is fixedly installed with a reinforcing plate, the other side wall of the reinforcing plate away from the inner clamping block is fixedly installed with a chuck.
[0007] A further preferred embodiment: the base, auxiliary support plate and main support plate are all made of aluminum.
[0008] A further preferred option: there is a distance between the two outer clamping blocks at the front and back, and a gap between the two inner clamping blocks on the left and right.
[0009] A further preferred embodiment: the cylinder groove is located in the middle position between the auxiliary support plate and the main support plate.
[0010] A further preferred embodiment: the number of support positioning holes and positioning pins are both 3; the front middle and rear left and right sides of the tray are provided with tray positioning holes that run vertically through the center; the left and right ends of the tray are provided with movable clamping grooves that run vertically through the center and facilitate the back and forth movement of the clamps; the middle of the front and rear sides of the tray is in close contact with the inner wall of the outer clamping block.
[0011] A further preferred embodiment: the material tank contains soldering material to be soldered; the manual air valve switch is turned on, and the cylinder opens in the first direction to control the clamp to clamp the soldering material; the manual air valve switch is turned off, and the cylinder closes in the second direction to control the clamp to release the soldering material.
[0012] A further preferred embodiment: the reinforcing plate is also made of aluminum, and the side wall of the reinforcing plate near the inner clamping block is movably fitted with the side wall of the inner clamping block.
[0013] A further preferred embodiment: the clamp is made of urethane rubber, the reinforcing plate and the bottom side of the clamp are slidably connected to the top side of the auxiliary support plate and the main support plate, and the outer side wall of the clamp is movably attached to the soldering material and the inner side wall of the tray.
[0014] Beneficial effects:
[0015] 1. The fixture tray has been changed from "contour fixed type" to "cylinder clamping interchangeable type", which reduces the material handling action, reduces the risk of the material surface coming into contact with solder paste, and shortens the material turnaround time (with fixed trays, the material needs to be taken out of the tray and placed on the turnover box before being put into the product, while with interchangeable trays, the material can be taken out directly from the tray and put into the product).
[0016] 2. Using a cylinder to clamp the material and fix it on the tray improves quality and prevents the material from sticking to the stencil and being carried out. In the process of being carried out, the material will also fall and come into contact with solder paste (solder paste is sticky, and if the material is too small or too light, it will stick to the stencil and be carried out of the tray after being soldered).
[0017] 3. The fixture base is designed for compatibility with multiple products; only the tray needs to be replaced.
[0018] 4. The clamp is made of urethane, which is elastic and prevents different batches of materials from not being clamped tightly due to size issues.
[0019] 5. In summary, this small parts soldering fixture, with its tray, cylinder, and chuck, can reduce material handling, lower the risk of the material's surface coming into contact with solder paste, shorten material turnaround time, and prevent the material from sticking to the stencil and being carried off the tray after stencil printing. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective after it has been flipped over.
[0022] Figure 3 This is a top view of the structure of this utility model and schematic diagrams of the first and second directions.
[0023] Figure 4 This is a schematic diagram of the bottom structure of this utility model.
[0024] Figure 5 This is a side view of the structure of this utility model.
[0025] Figure 6 This is an exploded structural diagram of the cylinder, base, and various support plates of this utility model.
[0026] Figure 7 This is a three-dimensional structural diagram of the combination of the tray, reinforcing plate, clamp, and soldering material of this utility model.
[0027] Figure 8 This is an exploded view of the tray, reinforcing plate, clamp, and soldering material of this utility model.
[0028] Figure 9 This is a schematic diagram of the main support plate structure of this utility model.
[0029] Figure 10 This is a schematic diagram of the remaining structure of the present invention after the tray and soldering material have been removed.
[0030] Figure 11 This is a schematic diagram of the combined structure of the cylinder, reinforcing plate and chuck of this utility model.
[0031] Figures 1-11 In the middle: 1. Base; 2. Auxiliary support plate; 3. Main support plate; 301-Outer clamping block; 302-Inner clamping block; 4. Cylinder; 5. Positioning pin; 6. Tray; 7. Reinforcing plate; 8. Clamp; 9. Tinning material. Detailed Implementation
[0032] The following will refer to the appendix in the embodiments of this utility model.Figures 1-11 The technical solutions in the embodiments of this utility model will be clearly and completely described.
[0033] Please see Figures 1-11 In this embodiment of the utility model, a small parts soldering fixture includes: a base 1, auxiliary support plates 2 fixedly installed at both the left and right ends of the top side of the base 1, a main support plate 3 fixedly installed at the middle of the top side of the base 1, outer clamping blocks 301 symmetrically fixedly installed at the front and rear ends of the top side of the main support plate 3, inner clamping blocks 302 symmetrically fixedly installed at the left and right ends of the middle of the top side of the main support plate 3, and cylinder slots opened at both the left and right ends of the top side of the base 1, with cylinders 4 embedded in the cylinder slots. Both cylinders 4 are pneumatic finger cylinders, and the cylinders 4 are connected by... The wire is electrically connected to the external manual air valve switch. Support positioning holes are opened at the relative positions of the top rear end of the auxiliary support plate 2 and the top right end of the main support plate 3. Positioning pins 5 are fixedly installed in the support positioning holes. The tray 6 is movably installed on the top sides of the auxiliary support plate 2 and the main support plate 3 through the positioning pins 5. Eight material slots are symmetrically opened at equal intervals at the front and rear ends of the top side of the tray 6. The pneumatic fingers at the top of the cylinder 4 are all fixedly installed with reinforcing plates 7. Clamps 8 are fixedly installed on the other side wall of the reinforcing plate 7 away from the inner clamping block 302.
[0034] In this embodiment of the utility model, the base 1, the auxiliary support plate 2 and the main support plate 3 are all made of aluminum. Aluminum has advantages such as light weight, high strength and relatively low cost, which can meet the stability and durability requirements of the fixture in actual use.
[0035] In this embodiment of the utility model, there is a distance between the two outer clamping blocks 301 at the front and back, and a gap between the two inner clamping blocks 302 on the left and right. This design can better adapt to the fixing requirements of materials of different sizes and enhance the versatility of the fixture.
[0036] In this embodiment of the invention, the cylinder slot is located in the middle between the auxiliary support plate 2 and the main support plate 3. This layout helps to ensure that the cylinder 4 can apply force evenly during operation and improve the stability of material clamping.
[0037] In this embodiment of the utility model, there are three supporting positioning holes and three positioning pins 5. These supporting positioning holes and positioning pins 5 work together to ensure the accuracy of the installation position of the tray 6. The tray 6 has a tray positioning hole that runs vertically through the middle of the front end and the left and right sides of the rear end. The tray 6 has movable clamping grooves that run vertically through the left and right ends to facilitate the back-and-forth movement of the clamps 8. The middle of the front and rear sides of the tray 6 is in close contact with the inner wall of the outer clamping block 301, which not only ensures the stability of the installation of the tray 6, but also does not hinder its flexible disassembly and adjustment within the vertical range.
[0038] In this embodiment of the invention, a soldering material 9 to be soldered is placed in the material tank; when the manual air valve is turned on, the cylinder 4 opens the control clamp 8 in the first direction to clamp the soldering material 9; when the manual air valve is turned off, the cylinder 4 closes the control clamp 8 in the second direction to release the soldering material 9. This control method is simple to operate and can accurately realize the clamping and releasing action of the soldering material 9.
[0039] In this embodiment of the utility model, the reinforcing plate 7 is also made of aluminum. The side wall of the reinforcing plate 7 near the inner clamping block 302 is movably fitted with the side wall of the inner clamping block 302. This not only helps to enhance the stability of the reinforcing plate 7 during the working process, but also assists the inner clamping block 302 in fixing the material to a certain extent.
[0040] In this embodiment of the utility model, the chuck 8 is made of urethane rubber, which has good flexibility and wear resistance, and can avoid damage to the surface of the material when clamping it. The reinforcing plate 7 and the bottom side of the chuck 8 are slidably connected to the top side of the auxiliary support plate 2 and the main support plate 3. The outer side wall of the chuck 8 is in contact with the inner side wall of the tin-brushing material 9 and the tray 6. This structural design ensures the smooth movement of the chuck 8 during the working process and the stable clamping of the material.
[0041] Working principle: Lower the stencil and cover the surface of the soldering material 9. Open the manual air valve switch to clamp the component (soldering material 9) with the chuck 8. That is, when the manual air valve switch is opened, the cylinder 4 opens in the first direction to control the chuck 8 to clamp the soldering material 9. Apply solder paste to the component (soldering material 9) and lift the stencil. Turn off the manual air valve switch and the chuck 8 releases. That is, when the manual air valve switch is closed, the cylinder 4 closes in the second direction to control the chuck 8 to release the soldering material 9. Finally, remove the tray 6.
[0042] Specifically, the initial inspection involves checking that all components of the fixture are intact, ensuring that the base 1, auxiliary support plate 2, main support plate 3, outer clamping block 301, inner clamping block 302, cylinder 4, positioning pin 5, tray 6, reinforcing plate 7, and chuck 8 are undamaged, deformed, or missing. It is confirmed that cylinder 4 is securely installed and that the wiring connection to the external manual air valve switch is correct and secure. Simultaneously, the manual air valve switch is checked to ensure it functions properly, guaranteeing that cylinder 4 operates smoothly according to instructions. The fixture surface is then cleaned, especially the material tray on tray 6 and the parts in contact with the material, such as chuck 8, inner clamping block 302, and outer clamping block 301, to prevent residual impurities from affecting material fixation and soldering results. The parts to be soldered are then placed on the tray. Place the soldering materials 9 one by one into the material slots on the top side of the tray 6. Ensure the materials are placed neatly and accurately, avoiding tilting or exceeding the material slot's range to prevent affecting subsequent clamping and soldering operations. Place the tray 6 on top of the auxiliary support plate 2 and the main support plate 3, aligning the tray positioning holes at the front center and rear left and right sides of the tray 6 with the positioning pins 5 in the support positioning holes. Gently press down on the tray 6 to ensure the positioning pins 5 are fully embedded in the tray positioning holes. The tray 6 is now installed. Observe whether the tray 6 is installed stably and whether the middle of the front and rear sides fits tightly against the inner wall of the outer clamping block 301 and can move freely. Lower the stencil and cover the surface of the soldering materials 9. Turn on the manual pneumatic switch. When the valve is switched on, cylinder 4 receives a signal and opens in the first direction. The pneumatic finger at the top of cylinder 4 drives the reinforcing plate 7 and the clamp 8 fixed on it to move synchronously. During the movement, the clamp 8 gradually approaches and contacts the soldering material 9. As cylinder 4 continues to move, the clamp 8 tightly clamps the material, ensuring that the material will not shift during the soldering process. During clamping, it is necessary to observe whether the clamp 8 applies force evenly and whether the material is stably clamped. Once the material is clamped and fixed, the soldering operation can be performed according to the established soldering process. During the soldering process, the operator must pay attention to the operation technique and force of the soldering tool to ensure that the solder paste is evenly applied to the area of the material that needs soldering. At the same time, it is necessary to... Avoid colliding the soldering tool with other parts of the fixture to prevent affecting the soldering effect or damaging the fixture. After completing the soldering operation, close the manual air valve switch. After receiving the closing signal, the cylinder 4 will close in the second direction, driving the chuck 8 to move away from the material. The chuck 8 will release the material. At this time, the stencil can be lifted, the tray 6 can be removed, and the soldered material can be taken out from the material tank. When taking out the material, operate carefully to avoid colliding with other unremoved materials to prevent damage. After all the materials have been removed, clean the fixture. Use a clean soft cloth or special cleaning agent to wipe the surface of the stencil, tray 6, chuck 8, inner clamp 302, outer clamp 301 and other components to remove residual solder paste and impurities.
Claims
1. A small parts soldering fixture, comprising: The base (1) is characterized in that: auxiliary support plates (2) are fixedly installed on both the left and right ends of the top side of the base (1); a main support plate (3) is fixedly installed on the middle of the top side of the base (1); outer clamping blocks (301) are symmetrically fixedly installed on the front and rear ends of the top side of the main support plate (3); inner clamping blocks (302) are symmetrically fixedly installed on the left and right ends of the middle of the top side of the main support plate (3); cylinder slots are opened on both the left and right ends of the top side of the base (1); cylinders (4) are embedded in the cylinder slots; both cylinders (4) are pneumatic finger cylinders; and the cylinders (4) are connected to an external manual air pump via wires. The valve is electrically connected to the switch. Support positioning holes are provided at the relative positions of the rear end of the top side of the auxiliary support plate (2) and the right end of the top side of the main support plate (3). Positioning pins (5) are fixedly installed in the support positioning holes. A tray (6) is movably installed on the top side of the auxiliary support plate (2) and the main support plate (3) through positioning pins (5). Eight material slots are symmetrically provided at equal intervals at the front and rear ends of the top side of the tray (6). A reinforcing plate (7) is fixedly installed on the pneumatic fingers at the top of the cylinder (4). A clamp (8) is fixedly installed on the other side wall of the reinforcing plate (7) away from the inner clamping block (302).
2. The small parts soldering fixture according to claim 1, characterized in that: The base (1), auxiliary support plate (2) and main support plate (3) are all made of aluminum.
3. The small parts soldering fixture according to claim 1, characterized in that: There is a distance between the two outer clamping blocks (301) at the front and back, and there is a gap between the two inner clamping blocks (302) on the left and right.
4. A small parts soldering fixture according to claim 1, characterized in that: The cylinder slot is located in the middle between the auxiliary support plate (2) and the main support plate (3).
5. A small parts soldering fixture according to claim 1, characterized in that: The number of the support positioning holes and positioning pins (5) are 3 each. The front middle and rear left and right sides of the tray (6) are provided with tray positioning holes that run vertically through the tray. The left and right ends of the tray (6) are provided with movable clamping grooves that run vertically through the tray (8) to facilitate the back and forth movement of the clamps. The middle of the front and rear sides of the tray (6) is in close contact with the inner wall of the outer clamping block (301).
6. A small parts soldering fixture according to claim 1, characterized in that: The material tank contains soldering material (9) to be soldered; the manual air valve switch is turned on, and the cylinder (4) opens the control clamp (8) in the first direction to clamp the soldering material (9); the manual air valve switch is turned off, and the cylinder (4) closes the control clamp (8) in the second direction to release the soldering material (9).
7. A small parts soldering fixture according to claim 1, characterized in that: The reinforcing plate (7) is also made of aluminum. The side wall of the reinforcing plate (7) near the inner clamping block (302) is in movable contact with the side wall of the inner clamping block (302).
8. A small parts soldering fixture according to claim 1, characterized in that: The clamp (8) is made of urethane rubber. The bottom side of the reinforcing plate (7) and the clamp (8) are slidably connected to the top side of the auxiliary support plate (2) and the main support plate (3). The outer side wall of the clamp (8) is movably attached to the inner side wall of the tin-brushing material (9) and the tray (6).