A device for opening a clamp
By using a driving component in the clamping device to move the support component and the push rod close to the clamp, rolling friction is achieved, which solves the problem of powder scattering caused by the sliding friction of HDPE pads, and improves product quality and lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- UNIVERSAL CIRCUIT BOARD EQUIP CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-31
AI Technical Summary
In existing clamping devices, the sliding friction between the HDPE pad and the clamp causes micron-sized powder to fall off, resulting in short circuits or signal interference, and severe wear shortens the lifespan.
A driving component is used to move the support component and the push rod close to the clamp. The push rod rotates around the axis during the extrusion process, realizing rolling friction instead of sliding friction. Metal push rods and bearings are used to reduce wear.
This reduces the risk of powder falling onto circuit boards, improves product quality control, extends product lifespan, and reduces maintenance costs.
Smart Images
Figure CN224583402U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of precision electronic manufacturing technology, and in particular to a clamping device. Background Technology
[0002] In the field of precision electronics manufacturing (such as PCB assembly), the clamping device is a key component for achieving automated gripping. It opens the chuck by pushing the pad bar so that the robot can grasp or place the workpiece.
[0003] Current clamping devices typically use HDPE (High-Density Polyethylene) pads and metal clamps to directly compress and open the clamps.
[0004] During the clamping process, existing HDPE pads experience dry sliding friction with the clamps, causing wear of the HDPE material and generating micron-sized dust (5-50μm in diameter), which falls onto PCB board pads or precision contacts, causing short circuits or signal interference (product scrap rate ≥3%). The sliding and scraping of the pad surface forms grooves, and bidirectional wear shortens its lifespan. Utility Model Content
[0005] The purpose of this invention is to provide a clamping device that uses rolling friction to replace sliding friction between the pad and the clamp, thereby reducing wear, preventing powder from falling and causing product scrap, and extending service life.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] An opening clamping device, comprising:
[0008] Drive components;
[0009] A support member, wherein the driving member is connected to the support member in a transmission manner, and the driving member is used to drive the support member to move closer to or away from the chuck;
[0010] A push rod is rotatably connected to the support member. The circumferential outer wall of the push rod is used to press the chuck, and the drive member drives the support member to move closer to the chuck. The push rod presses the chuck and can rotate axially relative to the chuck during the pressing process.
[0011] As an alternative to the clamping device, the support member is provided with a connecting shaft, and the top rod is rotatably connected to the connecting shaft.
[0012] As an alternative to the clamping device, the push rod is equipped with a bearing, and the push rod and the connecting shaft are rotatably connected through the bearing.
[0013] As an alternative to the clamping device, the support member is fixed with multiple limiting members, the connecting shaft passes through the multiple limiting members in sequence, and the two ends of the top rod abut against the limiting members respectively.
[0014] As an alternative to the clamping device, the clamping device further includes a fixing plate, the limiting member is disposed on the fixing plate, and the fixing plate is detachably connected to the support member.
[0015] As an alternative to the clamping device, the limiting member and the fixing plate are an integral structure.
[0016] As an alternative to the clamping device, a spacer is sleeved on the connecting shaft, and the spacer is clamped between the limiting member and the top rod.
[0017] As an alternative to the clamping device, the spacer is locked to the connecting shaft by fasteners.
[0018] As an alternative to the clamping device, the push rod is made of metal.
[0019] As an alternative to the clamping device, the support member is provided with a plurality of the top rods at intervals.
[0020] Beneficial effects:
[0021] In this invention, the freely rotating push rod compresses the chuck, which creates rolling friction between the outer wall of the push rod and the chuck during the compression process. This further reduces wear on the contact parts of the push rod and the chuck, reduces the risk of powder falling onto and adhering to the circuit board, optimizes product quality control during production, and extends service life. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the opening device provided in this embodiment of the present invention during operation;
[0023] Figure 2 yes Figure 1 A magnified view of a portion at point A.
[0024] In the picture:
[0025] 100. Chuck; 200. Circuit board;
[0026] 1. Driving component; 2. Support component; 3. Push rod; 4. Connecting shaft; 5. Bearing; 6. Limiting component; 7. Fixing plate; 8. Spacer. Detailed Implementation
[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0030] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0031] Please see the appendix Figure 1 and attached Figure 2 This embodiment relates to an opening clamping device, which is mainly used for automatically opening the clamp 100 of the circuit board 200, thereby completing the release clamping action of the circuit board 200.
[0032] The clamping device includes a driving component 1, a support component 2, and a push rod 3. The driving component 1 is pultrusively connected to the support component 2 and is used to move the support component 2 closer to or away from the clamp 100. The push rod 3 is rotatably connected to the support component 2. The circumferential outer wall of the push rod 3 is used to press the clamp 100, and the driving component 1 moves the support component 2 closer to the clamp 100. The push rod 3 presses the clamp 100 and can rotate axially relative to the clamp 100 during the pressing process.
[0033] Specifically, the driving component 1 includes, but is not limited to, a hydraulic cylinder and a motor. The hydraulic cylinder can be a linear cylinder, and the motor can be a linear motor. The driving component 1 can directly drive the support component 2 without the need for an intermediate transmission link, thereby ensuring transmission efficiency and the compactness of the overall structure. The driving component 1 can drive the support component 2 to move closer to or away from the chuck 100 along the horizontal direction. The push rod 3 has a cylindrical structure and can rotate freely on the support component 2. When the driving component 1 drives the support component 2 closer to the handle of the chuck 100, the circumferential wall of the push rod 3 can press against the handle of the chuck 100 and apply pressure to open the chuck 100. At the same time, the push rod 3 rotates around its axis, and the angle of this rotation is usually kept constant and small.
[0034] In this embodiment, by pressing the chuck 100 with the freely rotating push rod 3, rolling friction is formed between the outer wall of the push rod 3 and the chuck 100 during the pressing process. Compared with the sliding friction in the prior art, the wear generated by the contact part between the push rod 3 and the chuck 100 is reduced, further reducing the risk of powder falling onto the circuit board 200 and adhering to the circuit board 200, and optimizing the product quality control in the production process.
[0035] In this embodiment, the push rod 3 is a metal part.
[0036] Specifically, the ejector rod 3 can be made of 304 stainless steel, which is low in cost and offers better wear resistance than the HDPE pads used in the prior art, further improving its service life. Of course, those skilled in the art will understand that the selection of the ejector rod 3 involves more than just wear resistance; factors such as quality, rigidity, ease of molding, and cost must also be considered comprehensively. Therefore, the material of the ejector rod 3 can be chosen based on the specific factors emphasized.
[0037] Optionally, the support member 2 is provided with a connecting shaft 4, and the top rod 3 is rotatably connected to the connecting shaft 4.
[0038] In this embodiment, the support member 2 is a long, straight cubic rod adapted to the push rod 3. The support member 2 is horizontally arranged, and one side surface is fixedly connected to the driving end of the drive member 1, while the other opposite side surface is used to fix the connecting shaft 4. The push rod 3 is a sleeve structure that can be sleeved on the connecting shaft 4, thereby allowing the push rod 3 to rotate on the connecting shaft 4.
[0039] Optionally, the support member 2 is provided with multiple push rods 3 at intervals.
[0040] Specifically, multiple push rods 3 can be arranged at intervals along the axial direction of the same connecting shaft 4, thereby improving the efficiency of the clamping operation and ensuring that multiple chucks 100 can be operated as many times as possible for the same action of the drive component 1 on the same horizontal plane, so as to accommodate larger circuit boards 200.
[0041] Furthermore, the push rod 3 is equipped with a bearing 5 inside, and the push rod 3 and the connecting shaft 4 are rotatably connected through the bearing 5.
[0042] Specifically, the bearing 5 can be a standard ball bearing. Two bearings 5 are respectively set inside the push rod 3 near both ends of the push rod 3. The bearings 5 are used to support the push rod 3. The inner ring of the bearing 5 is matched with the connecting shaft 4, and the outer ring of the bearing 5 is matched with the push rod 3.
[0043] In this embodiment, by setting the bearing 5, the push rod 3 can be effectively rotated and supported, and the flexibility of the push rod 3 during rotation can be improved, thereby effectively avoiding wear of the rotating parts on the push rod 3 and improving the service life of the push rod 3.
[0044] Optionally, multiple limiting members 6 are fixed on the support member 2, and the connecting shaft 4 passes through the multiple limiting members 6 in sequence, with the two ends of the top rod 3 abutting against the limiting members 6 respectively.
[0045] Specifically, the limiting member 6 is a plate-shaped structure, erected on the support member 2, with multiple limiting members 6 arranged at intervals, and a top rod 3 is provided between every two limiting members 6. In this embodiment, three top rods 3 and four limiting members 6 are provided on the same connecting shaft 4. At the same time, the limiting member 6 is provided with a positioning hole for installing the connecting shaft 4. In this embodiment, since the top rod 3 can rotate around the connecting shaft 4, and the connecting shaft 4 remains stationary relative to the support member 2, the part of the connecting shaft 4 that mates with the top rod 3 is a cylindrical structure, while the structure of the connecting shaft 4 that mates with the positioning hole is non-circular, thereby restricting the rotation of the connecting shaft 4 by the limiting member 6.
[0046] Furthermore, the clamping device also includes a fixing plate 7, a limiting member 6 is provided on the fixing plate 7, and the fixing plate 7 is detachably connected to the support member 2.
[0047] Specifically, the fixing plate 7 is a long, straight plate-shaped component. The limiting component 6 can be fixed to the fixing plate 7 by means of screwing or snap-fitting. Alternatively, the limiting component 6 can be integrally formed onto the fixing plate 7, thereby reducing the number of parts and assembly steps. The fixing plate 7 is fixed to the support component 2 by screwing, thus achieving the effect of easy assembly and disassembly of the fixing plate 7.
[0048] In this embodiment, by setting the fixing plate 7, the support member 2 and the driving member 1 can form a driving part, while the fixing plate 7, the connecting shaft 4, the push rod 3, and the limiting member 6 together form an execution part. This allows the execution part to be modularized, which is beneficial for modular assembly. Specifically, when adapting to circuit boards 200 of different sizes, different numbers of clamps 100 need to be set accordingly, and the overall size of the execution part also needs to be changed accordingly. By realizing modularity, operators can easily select the appropriate module according to the specific working conditions.
[0049] Optionally, a spacer 8 is sleeved on the connecting shaft 4, and the spacer 8 is clamped between the limiting member 6 and the push rod 3.
[0050] In this embodiment, the spacer 8 is provided with multiple mounting holes in the axial direction. Screws pass through the mounting holes and are tightened to make the spacer 8 detachably fixed on the connecting shaft 4.
[0051] Specifically, by setting a spacer 8, the push rod 3 can be isolated from the limiting member 6. The spacer 8 can be made of a wear-resistant metal material, such as 304 stainless steel, to prevent the push rod 3 from sliding and wearing with the limiting member 6 during rotation. Even if the spacer 8 wears out, it can be replaced accordingly, thereby effectively reducing maintenance costs.
[0052] The working principle of this clamping device is briefly explained below.
[0053] First, the drive unit 1 is activated, causing the support unit 2 and the push rod 3 to approach the chuck 100. After the push rod 3 contacts the handle of the chuck 100, it continues to move and squeeze the handle of the chuck 100, thereby opening the chuck 100 and completing the opening action, releasing the circuit board 200. After the release action is completed, the drive unit 1 reverses and drives the support unit 2 and the push rod 3 away from the chuck 100. Through this opening device, the push rod 3, while squeezing the handle of the chuck 100, rotates at a certain angle, thereby achieving rolling friction instead of sliding friction, reducing wear on the contact parts of the push rod 3, avoiding the generation and falling of wear debris, and ensuring product quality control during the production process.
[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. An opening device, characterized in that include: Drive component (1); Support member (2), the driving member (1) is connected to the support member (2) in a transmission manner, the driving member (1) is used to drive the support member (2) to move closer to or away from the chuck (100); The push rod (3) is rotatably connected to the support member (2). The circumferential outer wall of the push rod (3) is used to press the chuck (100), and the drive member (1) drives the support member (2) to approach the chuck (100). The push rod (3) presses the chuck (100) and can rotate axially relative to the chuck (100) during the pressing process.
2. The opening device according to claim 1, characterized in that The support member (2) is provided with a connecting shaft (4), and the top rod (3) is rotatably connected to the connecting shaft (4).
3. The opening device according to claim 2, characterized in that The top rod (3) is provided with a bearing (5) inside, and the top rod (3) and the connecting shaft (4) are rotatably connected through the bearing (5).
4. The opening device according to claim 3, characterized in that Multiple limiting members (6) are fixed on the support member (2), and the connecting shaft (4) passes through the multiple limiting members (6) in sequence. The two ends of the top rod (3) abut against the limiting members (6) respectively.
5. The opening device according to claim 4, characterized in that The clamping device further includes a fixing plate (7), the limiting member (6) is disposed on the fixing plate (7), and the fixing plate (7) is detachably connected to the support member (2).
6. The opening device according to claim 5, characterized in that The limiting member (6) and the fixing plate (7) are an integral structure.
7. The opening device according to claim 4, wherein A spacer (8) is fitted on the connecting shaft (4), and the spacer (8) is sandwiched between the limiting member (6) and the top rod (3).
8. The opening device according to claim 7, characterized in that The spacer (8) is locked to the connecting shaft (4) by fasteners.
9. The opening device according to any one of claims 1-8, characterized in that The top rod (3) is a metal part.
10. The opening device according to any one of claims 1-8, characterized in that The support member (2) is provided with a plurality of top rods (3) spaced apart.