Centering clamping mechanism
By designing a centering clamping mechanism including an annular transmission and clamping block, the shortcomings of the traditional clamping device in adapting to different workpiece widths and maintaining clamping stability are solved, and flexible adaptation to different workpieces is achieved and High-precision clamping reduces costs and simplifies the overhaul process.
Patent Information
- Application Number
- CN202420307811.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-19
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-02-19
AI Technical Summary
Existing clamping devices have shortcomings in adapting to different workpiece widths and maintaining clamping stability, especially traditional pneumatic clamping jaws and mechanical clamping jaws are difficult to automatically adjust the clamping stroke when the workpiece size is different, and there is a transmission gap and high cost. etc.
A centering clamping mechanism is designed, including a clamping bracket, a rotor assembly, annular transmission, a clamping block and a drive member, and synchronous movement and centering clamping of the clamping block are achieved through the annular transmission member, and Provide accurate feedback through sensors and contact switches.
Adaptive clamping for different workpiece widths is achieved, ensuring stability and accuracy of clamping, reducing costs and simplifying the maintenance process, and has higher flexibility and reliability than traditional clamping devices.
Smart Images
Figure CN222449918U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of clamping weighing sensors, in particular to a centering clamping mechanism. Background Art
[0002] With the continuous improvement of the level of industrial automation, higher requirements are placed on the flexibility, precision and adaptability of clamping devices. Traditional clamping devices such as pneumatic clamps require different strokes for different workpieces. For example, when the workpiece is large, the pneumatic clamp is easy to damage the workpiece during clamping, or when it is small, the clamp needs to be replaced with a larger stroke. Another example is mechanical clamps, which are driven by gear racks, etc., and gear rack transmission has a transmission gap, so it is easy to loosen a short distance after clamping.
[0003] Therefore, there is a need for a clamping mechanism that can adapt to different workpiece widths and has stable clamping. Utility Model Content
[0004] In view of this, the purpose of the utility model is to provide a centering clamping mechanism that can adapt to different workpiece widths and has stable clamping.
[0005] The technical solution adopted by the utility model to solve its technical problems is to provide a centering clamping mechanism, including a clamping bracket, two rotating wheel assemblies rotatably connected to the clamping bracket, two annular transmission members respectively sleeved on the corresponding rotating wheel assemblies, two clamping blocks distributed front and back, and a first driving member connected to one of the clamping blocks, the clamping block located on the front side is simultaneously connected to the left side of the two annular transmission members, the clamping block located on the rear side is simultaneously connected to the right side of the two annular transmission members, the first driving member drives one of the clamping blocks to move forward and drives the other clamping block to move backward through the annular transmission member.
[0006] As a further improvement of the utility model, the two clamping blocks are provided with elastic clamping blocks on opposite sides.
[0007] As a further improvement of the utility model, a limit detection piece is fixedly connected to at least one clamping block, a photoelectric sensor for inserting the limit detection piece is provided on the clamping bracket, and a contact switch capable of contacting the workpiece is provided on one of the clamping blocks.
[0008] As a further improvement of the present invention, each wheel assembly includes two wheels distributed front and rear, a guide rail is provided between the two wheels, and a slider for connecting the two clamping blocks is provided on the guide rail so that the two clamping blocks can move forward and backward along the guide rail.
[0009] As a further improvement of the utility model, the first driving member is a pneumatic push rod.
[0010] The technical solution adopted by the utility model to solve its technical problems also provides a centering clamping mechanism, including a clamping bracket, two rotating wheel assemblies rotatably connected to the clamping bracket, two annular transmission members respectively sleeved on the corresponding rotating wheel assemblies, two clamping blocks distributed front and back, and two second driving members connected to the rotating wheel assemblies one by one, the clamping block located on the front side is simultaneously connected to the left side of the two annular transmission members, and the clamping block located on the rear side is simultaneously connected to the right side of the two annular transmission members, so that the second driving member drives the corresponding rotating wheel assemblies to work respectively and drives the two clamping blocks to approach each other to achieve clamping or move away from each other to achieve loosening through the annular transmission member.
[0011] As a further improvement of the utility model, the two clamping blocks are provided with elastic clamping blocks on opposite sides.
[0012] As a further improvement of the utility model, a limit detection piece is fixedly connected to at least one clamping block, a photoelectric sensor for inserting the limit detection piece is provided on the clamping bracket, and a contact switch capable of contacting the workpiece is provided on one of the clamping blocks.
[0013] As a further improvement of the present invention, each wheel assembly includes two wheels distributed front and rear, a guide rail is provided between the two wheels, and a slider for connecting the two clamping blocks is provided on the guide rail so that the two clamping blocks can move forward and backward along the guide rail.
[0014] As a further improvement of the present invention, the second driving member is a motor.
[0015] The beneficial effects of the utility model are at least:
[0016] 1. Since the front and rear clamping blocks are both set on the same annular transmission member, the transmission is stable, synchronous and directional, and each clamping is kept centered, which plays a role in positioning while clamping, and is compatible with workpieces of different specifications; compared with traditional pneumatic grippers and mechanical grippers, the pneumatic grippers have a short clamping stroke and cannot automatically adjust the clamping stroke according to the different workpieces. The mechanical grippers also have a transmission gap and are easy to loosen after clamping. Most importantly, pneumatic grippers and mechanical grippers are expensive and difficult to repair.
[0017] 2. Through the setting of sensors and contact switches, accurate feedback can be provided to the background while clamping or loosening. For the magnetic switch used in the traditional cylinder, due to the small magnetic ring in the magnetic switch, sometimes the induction cannot be triggered when clamping or loosening, resulting in the inability to carry out subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of the utility model;
[0019] Figure 2yes Figure 1 Schematic diagram of the structure from another angle. DETAILED DESCRIPTION
[0020] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.
[0021] Reference Figure 1-2 The utility model proposes a centering clamping mechanism, including a clamping bracket 1, two rotating wheel assemblies 2 rotatably connected to the clamping bracket 1, two annular transmission members 3 respectively sleeved on the corresponding rotating wheel assemblies 2, two clamping blocks 4 distributed front and back, and a first driving member 5 connected to one of the clamping blocks 4, the clamping block 4 located on the front side is simultaneously connected to the left side of the two annular transmission members 3, the clamping block 4 located on the rear side is simultaneously connected to the right side of the two annular transmission members 3, the first driving member 5 drives one of the clamping blocks 4 to move forward and drives the other clamping block 4 to move backward through the annular transmission member 3.
[0022] Since the front and rear clamping blocks 4 are both arranged on the same annular transmission member 3, the transmission is stable, synchronous and angular, and each clamping is kept centered, which plays a role of positioning while clamping; compared with traditional pneumatic clamps and mechanical clamps, pneumatic clamps have a short clamping stroke and can automatically adjust the clamping stroke according to the different workpieces. Mechanical clamps also have transmission gaps, which are easy to loosen after clamping. Most importantly, pneumatic clamps and mechanical clamps are expensive and difficult to maintain.
[0023] As a preferred embodiment of the present invention, the annular transmission member 3 is a steel belt, and of course, it can also be an annular structure such as a belt, a steel rope, a chain, etc.
[0024] As a further improvement of the present invention, the two clamping blocks 4 are both provided with elastic clamping blocks 41 on opposite sides.
[0025] As a further improvement of the utility model, a limit detection piece 6 is fixedly connected to at least one clamping block 4, and a photoelectric sensor 61 for inserting the limit detection piece 6 is provided on the clamping bracket 1, and a contact switch 42 capable of contacting the workpiece is provided on one of the clamping blocks 4.
[0026] By setting up sensors and contact switches, accurate feedback can be provided to the background during clamping or loosening. However, for the magnetic switches used in traditional cylinders, due to the small magnetic ring in the magnetic switches, sometimes the induction cannot be triggered during clamping or loosening, resulting in the inability to perform subsequent processing.
[0027] As a further improvement of the present invention, each wheel assembly 2 includes two wheels 21 distributed front and rear, a guide rail 22 is provided between the two front and rear wheels 21, and a slider for connecting the two clamping blocks 4 is provided on the guide rail 22 so that the two clamping blocks 4 can move forward and backward along the guide rail 22.
[0028] As a further improvement of the present invention, the first driving member 5 is a pneumatic push rod.
[0029] The technical solution adopted by the utility model to solve its technical problems also provides a centering clamping mechanism, including a clamping bracket 1, two rotating wheel assemblies 2 rotatably connected to the clamping bracket 1, two annular transmission members 3 respectively sleeved on the corresponding rotating wheel assemblies 2, two clamping blocks 4 distributed front and back, and two second driving members connected to the rotating wheel assemblies 2 one by one, the clamping block 4 located on the front side is simultaneously connected to the left side of the two annular transmission members 3, and the clamping block 4 located on the rear side is simultaneously connected to the right side of the two annular transmission members 3, so that the second driving member drives the corresponding rotating wheel assemblies 2 to work respectively and drives the two clamping blocks 4 to approach each other to achieve clamping or move away from each other to achieve loosening through the annular transmission member 3.
[0030] As a further improvement of the present invention, the two clamping blocks 4 are both provided with elastic clamping blocks 41 on opposite sides.
[0031] As a further improvement of the utility model, a limit detection piece 6 is fixedly connected to at least one clamping block 4, and a photoelectric sensor 61 for inserting the limit detection piece 6 is provided on the clamping bracket 1, and a contact switch 42 capable of contacting the workpiece is provided on one of the clamping blocks 4.
[0032] As a further improvement of the present invention, each wheel assembly 2 includes two wheels 21 distributed front and rear, a guide rail 22 is provided between the two front and rear wheels 21, and a slider for connecting the two clamping blocks 4 is provided on the guide rail 22 so that the two clamping blocks 4 can move forward and backward along the guide rail 22.
[0033] As a further improvement of the present invention, the second driving member is a motor.
Claims
1. A centering clamping mechanism, characterized in that: The invention comprises a clamping bracket (1), two rotating wheel assemblies (2) rotatably connected to the clamping bracket (1), two annular transmission members (3) respectively sleeved on the corresponding rotating wheel assemblies (2), two clamping blocks (4) distributed front and back, and a first driving member (5) connected to one of the clamping blocks (4), wherein the clamping block (4) located at the front side is simultaneously connected to the left side of the two annular transmission members (3), and the clamping block (4) located at the rear side is simultaneously connected to the right side of the two annular transmission members (3), and the first driving member (5) drives one of the clamping blocks (4) to move forward and drives the other clamping block (4) to move backward through the annular transmission member (3).
2. A centering clamping mechanism according to claim 1, characterized in that: The two clamping blocks (4) are each provided with an elastic clamping block (41) on one opposite side.
3. A centering clamping mechanism according to claim 1, characterized in that: A limit detection sheet (6) is fixedly connected to at least one of the clamping blocks (4), a photoelectric sensor (61) is provided on the clamping bracket (1) for the limit detection sheet (6) to be inserted, and a contact switch (42) capable of contacting a workpiece is provided on one of the clamping blocks (4).
4. A centering clamping mechanism according to claim 1, characterized in that: Each of the rotating wheel assemblies (2) comprises two rotating wheels (21) distributed front and rear, a guide rail (22) is provided between the two rotating wheels (21) front and rear, and a slider for connecting two clamping blocks (4) is provided on the guide rail (22) so that the two clamping blocks (4) can move forward and backward along the guide rail (22).
5. A centering clamping mechanism according to claim 1, characterized in that: The first driving member (5) is a pneumatic push rod.
6. A centering clamping mechanism, characterized in that: The invention comprises a clamping bracket (1), two rotating wheel assemblies (2) rotatably connected to the clamping bracket (1), two annular transmission members (3) respectively sleeved on the corresponding rotating wheel assemblies (2), two clamping blocks (4) distributed front and rear, and two second driving members respectively connected to the rotating wheel assemblies (2), wherein the clamping block (4) located at the front side is simultaneously connected to the left side of the two annular transmission members (3), and the clamping block (4) located at the rear side is simultaneously connected to the right side of the two annular transmission members (3), so that the second driving members respectively drive the corresponding rotating wheel assemblies (2) to work and drive the two clamping blocks (4) to approach each other to achieve clamping or move away from each other to achieve loosening through the annular transmission members (3).
7. A centering clamping mechanism according to claim 6, characterized in that: The two clamping blocks (4) are each provided with an elastic clamping block (41) on one opposite side.
8. A centering clamping mechanism according to claim 6, characterized in that: A limit detection sheet (6) is fixedly connected to at least one of the clamping blocks (4), a photoelectric sensor (61) is provided on the clamping bracket (1) for the limit detection sheet (6) to be inserted, and a contact switch (42) capable of contacting a workpiece is provided on one of the clamping blocks (4).
9. A centering clamping mechanism according to claim 6, characterized in that: Each of the rotating wheel assemblies (2) comprises two rotating wheels (21) distributed front and rear, a guide rail (22) is provided between the two rotating wheels (21) front and rear, and a slider for connecting two clamping blocks (4) is provided on the guide rail (22) so that the two clamping blocks (4) can move forward and backward along the guide rail (22).
10. A centering clamping mechanism according to claim 6, characterized in that: The second driving member is a motor.