Clamp capable of fixing multiple metal products

Abstract

The utility model discloses a fixture capable of fixing a plurality of metal products, which comprises a base, a working table is arranged in the middle of the upper end of the base, two ends of the working table are welded and fixed with the base, a driving cavity is arranged in the base, a driving shaft is mounted in the driving cavity, two ends of the driving shaft are rotatably connected with the base, and the driving shaft is fixedly connected with the base. Transmission arms are arranged outside the driving shaft, the number of the transmission arms is at least six, the center positions of the transmission arms are fixed to the driving shaft, connecting arms are installed on the two sides of the transmission arms, toggle rods are installed on one sides of the connecting arms and extend to the position above the workbench, clamping blocks are arranged at the upper ends of the toggle rods, and clamping blocks are arranged at the lower ends of the toggle rods. And the clamping block and the toggle rod are integrally formed, so that the metal product clamp not only can realize simultaneous machining of a plurality of workpieces, but also effectively improves the clamping stability.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a clamp capable of fixing a plurality of metal products. Background Art

[0002] Metal product fixtures play a vital role in the field of industrial manufacturing and processing. With the advancement of science and technology and the development of the manufacturing industry, the demand and application scope of metal product fixtures are also expanding. They refer to tools used to fix and position metal materials during manufacturing and processing. Early metal product fixtures were relatively simple and were mainly used for manual operations, such as pliers and wrenches. With the progress of industrialization, mechanical processing and automated production have become increasingly popular, and the requirements for metal product fixtures have become higher and higher. The use of metal product fixtures can greatly improve production efficiency. Especially on automated production lines, suitable fixtures can greatly reduce manual intervention and achieve fast and accurate clamping.

[0003] For example, the Chinese authorized patent "A Metal Product Processing Fixture" with announcement number CN218575974U includes a fixed mounting plate, bolt fixing holes, a lifting hydraulic rod, a support top plate, a support base and a metal product workpiece clamping device. The metal product workpiece clamping device includes a driving motor, a rotating double-headed screw, a screw support plate, a support plate slide groove, a support plate sliding block, a movable support plate, a support vertical plate, a rotating motor, a rotating transmission shaft, a driven shaft support plate, a clamping plate driven shaft and a metal product movable clamping plate.

[0004] Although the above-mentioned existing technology solves the problem that the current metal product processing fixture is inconvenient to automatically adjust according to the size of the workpiece, and is inconvenient to firmly clamp the workpiece and adjust the angle, but with the continuous expansion of the scale of metal product production, a single fixed fixture is not convenient to cooperate with the processing equipment of the production line to complete the simultaneous processing of multiple metal products, which has a great impact on production efficiency. Moreover, the fixture has poor stability during the clamping process. Excessive clamping force can easily cause damage to the metal product, while too little clamping force will cause the metal product to fall during the processing process. Therefore, it does not meet the existing needs. In this regard, we propose a fixture that can fix multiple metal products. Utility Model Content

[0005] The utility model aims to provide a clamp capable of fixing a plurality of metal products, so as to solve the problem of how to improve the clamping stability of the metal product clamp proposed in the above background technology while realizing the simultaneous processing of a plurality of workpieces.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a clamp capable of fixing multiple metal products, comprising a base, a workbench is arranged at the middle position of the upper end of the base, and the two ends of the workbench are welded and fixed to the base, a driving cavity is arranged inside the base, a driving shaft is installed inside the driving cavity, and the two ends of the driving shaft are rotatably connected to the base, a transmission arm is arranged outside the driving shaft, at least six transmission arms are arranged, and the center position of the transmission arm is fixed to the driving shaft, connecting arms are installed on both sides of the transmission arm, an elbow rod is installed on one side of the connecting arm, and the elbow rod extends to the top of the workbench, a clamping block is arranged on the upper end of the elbow rod, and the clamping block and the elbow rod are integrally formed.

[0007] Preferably, a servo motor is installed on one side of the upper end surface of the base, and the housing of the servo motor is fixed to the base by bolts, a worm is provided at one end of the drive shaft, and the worm is welded and fixed to the drive shaft, a worm wheel is installed on one side of the worm, the worm wheel is adapted to the worm, and the center axis of the worm wheel is fixed to the output shaft of the servo motor by a coupling.

[0008] Preferably, a first rotating shaft is fixedly provided at the upper end of the elbow rod, and both ends of the first rotating shaft are rotatably connected to the base, a second rotating shaft is fixedly provided at one end of the connecting arm, and both ends of the second rotating shaft are rotatably connected to the lower end of the elbow rod, and a third rotating shaft is fixedly provided at the other end of the connecting arm, and both ends of the third rotating shaft are rotatably connected to the transmission arm.

[0009] Preferably, a movable chuck is installed inside the clamping block, and the movable chuck and the clamping block are slidably limited, a pressure sensor is installed between the movable chuck and the inner cavity of the clamping block, and the mounting end of the pressure sensor is fixed to the clamping block by screws.

[0010] Preferably, a support spring is installed outside the pressure sensor, and two ends of the support spring are respectively fixed to the movable clamp and the clamping block.

[0011] Preferably, both sides of the upper end surface of the base are provided with empty grooves, which are connected to the driving cavity to provide a movable space for the toggle rod.

[0012] Preferably, mounting seats are fixedly provided at the four corners of the base.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model can realize the synchronous clamping of multiple metal products. The conventional lower elbow is in an open state. The staff only needs to place the metal products one by one between the front and rear clamping blocks. After the placement is completed, the servo motor is turned on, and the driving shaft is driven to rotate at an angle under the action of the transmission mechanism, and the inclined transmission arm is driven to move in the horizontal direction. During the movement, the connecting arm forms traction on the elbow, so that the upper end of the elbow rotates with the first rotating shaft as the center of the circle, so that the clamping block is constantly close to the metal product, so as to fix the metal product. The device has a simple structure and is easy to operate. It can quickly fix multiple metal products at the same time through the driving shaft, and the flexibility is effectively improved, while the processing efficiency is improved.

[0015] 2. The utility model is provided with a self-locking mechanism. The output shaft of the servo motor drives the worm wheel to rotate. The tooth groove of the worm wheel is surrounded by the spiral protrusion of the worm. The contact surface between the worm and the worm wheel forms a spiral friction transmission surface. The rotation of the worm drives the worm wheel to rotate, thereby realizing the angle adjustment of the drive shaft. Due to the self-locking property between the worm and the worm wheel, it can ensure that the drive shaft remains limited at the adjusted angle, further improving the stability of the clamping block.

[0016] 3. The utility model provides a movable chuck at one end of the clamping block. During the movement of the elbow rod, the movable chuck contacts the metal product first. As the movable chuck moves toward the inside of the clamping block, it contacts the pressure sensor. The pressure sensor detects the pressure value in real time. When the set value is reached, it indicates that the clamping force of the movable chuck on the metal product is moderate. At the same time, the servo motor is stopped to be fixed at this position. On the one hand, damage to the metal product is avoided during the clamping process, and on the other hand, loosening of the metal product and the clamp is avoided during the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the clamp of the utility model in the clamping state;

[0018] Figure 2 It is an overall top view of the utility model;

[0019] Figure 3 This is a top view of the internal structure of the drive chamber of the utility model;

[0020] Figure 4 This is a schematic diagram of the clamping block structure of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the clamp of the utility model in a relaxed state.

[0022] In the figure: 1. base; 2. workbench; 3. drive shaft; 4. transmission arm; 5. connecting arm; 6. elbow rod; 7. movable chuck; 8. drive chamber; 9. servo motor; 10. mounting seat; 11. worm; 12. worm wheel; 13. clamping block; 14. first rotating shaft; 15. pressure sensor; 16. support spring; 17. second rotating shaft; 18. third rotating shaft. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figure 1-5 The utility model provides an embodiment: a clamp that can fix multiple metal products, including a base 1, a workbench 2 is arranged at the middle position of the upper end of the base 1, and the two ends of the workbench 2 are welded and fixed to the base 1, a driving cavity 8 is arranged inside the base 1, a driving shaft 3 is installed inside the driving cavity 8, and the two ends of the driving shaft 3 are rotatably connected to the base 1, a transmission arm 4 is arranged outside the driving shaft 3, at least six transmission arms 4 are arranged, and the center position of the transmission arm 4 is fixed to the driving shaft 3, connecting arms 5 are installed on both sides of the transmission arm 4, a toggle rod 6 is installed on one side of the connecting arm 5, and the toggle rod 6 extends to the top of the workbench 2, a clamping block 13 is arranged on the upper end of the toggle rod 6, and the clamping block 13 and the toggle rod 6 are integrally formed.

[0025] When in use, the conventional lower elbow rod 6 is in an open state, and the staff only needs to place the metal products one by one between the front and rear clamping blocks 13. After placement, the servo motor 9 is turned on, and the driving shaft 3 is driven to rotate at an angle under the action of the transmission mechanism, driving the inclined transmission arm 4 to move in the horizontal direction. During the movement, the connecting arm 5 pulls the elbow rod, so that the upper end of the elbow rod 6 rotates with the first turn 4 as the center, so that the clamping block 13 is constantly close to the metal product, thereby fixing the metal product.

[0026] See also Figure 3 A servo motor 9 is installed on one side of the upper end surface of the base 1, and the housing of the servo motor 9 is fixed to the base 1 by bolts. A worm 11 is provided at one end of the drive shaft 3, and the worm 11 is welded and fixed to the drive shaft 3. A worm wheel 12 is installed on one side of the worm 11, and the worm wheel 12 is adapted to the worm 11, and the central axis of the worm wheel 12 is fixed to the output shaft of the servo motor 9 by a coupling. Due to the self-locking property between the worm 11 and the worm wheel 12, it can ensure that the drive shaft 3 remains limited at the adjusted angle, further improving the stability of the clamping block.

[0027] See also Figure 1A first rotating shaft 14 is fixedly provided at the upper end of the elbow rod 6, and both ends of the first rotating shaft 14 are rotatably connected to the base 1, a second rotating shaft 17 is fixedly provided at one end of the connecting arm 5, and both ends of the second rotating shaft 17 are rotatably connected to the lower end of the elbow rod 6, a third rotating shaft 18 is fixedly provided at the other end of the connecting arm 5, and both ends of the third rotating shaft 18 are rotatably connected to the transmission arm 4. The device has a simple structure and is easy to operate. It can quickly fix multiple metal products at the same time through the driving shaft, and the flexibility is effectively improved, while also improving the processing efficiency.

[0028] See also Figure 4 A movable chuck 7 is installed inside the clamping block 13, and the movable chuck 7 and the clamping block 13 are limited by sliding. A pressure sensor 15 is installed between the movable chuck 7 and the inner cavity of the clamping block 13, and the mounting end of the pressure sensor 15 is fixed to the clamping block 13 by screws, which can avoid damage to the metal product during the clamping process on the one hand, and avoid loosening of the metal product and the clamp during the processing process on the other hand.

[0029] See also Figure 4 A support spring 16 is installed outside the pressure sensor 15, and both ends of the support spring 16 are respectively fixed to the movable clamp 7 and the clamping block 13 to achieve the reset of the movable clamp 7.

[0030] See also Figure 2 Empty grooves are provided on both sides of the upper end surface of the base 1, and the empty grooves are connected to the driving cavity 8 to provide a movable space for the toggle rod 6.

[0031] See also Figure 2 The four corners of the base 1 are fixedly provided with mounting seats 10.

[0032] Working principle: When in use, the output shaft of the servo motor 9 will drive the worm wheel 12 to rotate, and the tooth groove of the worm wheel 12 is surrounded by the spiral protrusion of the worm 11. The contact surface between the worm 11 and the worm wheel 12 forms a spiral friction transmission surface. The rotation of the worm 11 drives the worm wheel 12 to rotate, thereby realizing the angle adjustment of the drive shaft 3. During the movement of the elbow rod 6, the movable chuck 7 contacts the metal product first. As the movable chuck 7 moves toward the inside of the clamping block 13, it contacts the pressure sensor 15. The pressure sensor 15 detects the pressure value in real time. When the set value is reached, it indicates that the clamping force of the movable chuck 7 on the metal product is moderate, and the servo motor 9 is stopped at the same time to fix it at this position.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A clamp capable of fixing a plurality of metal products, comprising a base (1), characterized in that: A workbench (2) is arranged at the middle position of the upper end of the base (1), and the two ends of the workbench (2) are welded and fixed to the base (1); a driving cavity (8) is arranged inside the base (1), a driving shaft (3) is installed inside the driving cavity (8), and the two ends of the driving shaft (3) are rotatably connected to the base (1); a transmission arm (4) is arranged outside the driving shaft (3), at least six transmission arms (4) are arranged, and the center position of the transmission arm (4) is fixed to the driving shaft (3); connecting arms (5) are installed on both sides of the transmission arm (4), and a toggle rod (6) is installed on one side of the connecting arm (5), and the toggle rod (6) extends to the top of the workbench (2); a clamping block (13) is arranged at the upper end of the toggle rod (6), and the clamping block (13) and the toggle rod (6) are integrally formed.

2. A clamp capable of fixing a plurality of metal products according to claim 1, characterized in that: A servo motor (9) is installed on one side of the upper end surface of the base (1), and the housing of the servo motor (9) is fixed to the base (1) by bolts. A worm (11) is provided at one end of the drive shaft (3), and the worm (11) is welded and fixed to the drive shaft (3). A worm wheel (12) is installed on one side of the worm (11), the worm wheel (12) is matched with the worm (11), and the central axis of the worm wheel (12) is fixed to the output shaft of the servo motor (9) by a coupling.

3. A clamp capable of fixing a plurality of metal products according to claim 1, characterized in that: A first rotating shaft (14) is fixedly provided at the upper end of the toggle lever (6), and both ends of the first rotating shaft (14) are rotatably connected to the base (1); a second rotating shaft (17) is fixedly provided at one end of the connecting arm (5), and both ends of the second rotating shaft (17) are rotatably connected to the lower end of the toggle lever (6); a third rotating shaft (18) is fixedly provided at the other end of the connecting arm (5), and both ends of the third rotating shaft (18) are rotatably connected to the transmission arm (4).

4. A clamp capable of fixing a plurality of metal products according to claim 1, characterized in that: A movable clamp (7) is installed inside the clamping block (13), and the movable clamp (7) and the clamping block (13) are slidably limited. A pressure sensor (15) is installed between the movable clamp (7) and the inner cavity of the clamping block (13), and the mounting end of the pressure sensor (15) is fixed to the clamping block (13) by means of screws.

5. A clamp capable of fixing a plurality of metal products according to claim 4, characterized in that: A support spring (16) is installed outside the pressure sensor (15), and two ends of the support spring (16) are respectively fixed to the movable clamp (7) and the clamping block (13).

6. A clamp capable of fixing a plurality of metal products according to claim 1, characterized in that: Empty grooves are provided on both sides of the upper end surface of the base (1), and the empty grooves are connected to the driving cavity (8) to provide a movable space for the toggle rod (6).

7. A clamp capable of fixing a plurality of metal products according to claim 1, characterized in that: Mounting seats (10) are fixedly arranged at the four corners of the base (1).

Images