Clamping device

Abstract

A clamping device comprises an installation base, a containing disc with a horizontal disc face is fixed to the installation base through an installation frame, a circular ring is rotationally installed on the installation base through a first driving mechanism, the containing disc is sleeved with the circular ring, the circular ring and the containing disc are concentric, and the circular ring can rotate relative to the containing disc. The top of the placing disc is flush with the top of the circular ring, the first driving mechanism is used for driving the circular ring to rotate, clamping plates are arranged on the circular ring and located on the two sides of the placing disc in a sliding mode, and second driving mechanisms in driving connection with the two clamping plates are arranged on the circular ring. The second driving mechanism is used for driving the two clamping plates to slide relatively, and the clamping mechanism is simple in structure and mainly used for clamping and positioning of workpieces before machining.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping and positioning, in particular to a clamping device. Background Art

[0002] Some positioning devices are often used in the processing of automobile parts. For example, clamping positioning devices are used quite frequently. In some processing steps, such as welding and parts assembly, it is necessary to position the automobile parts before operation.

[0003] There are many clamping and positioning devices in the prior art. For example, the patent document with publication number "CN216883238U" and name "A grinding mechanism for automobile die-casting parts processing" discloses a grinding mechanism. The grinding mechanism includes a base plate and a turntable rotatably connected to the base plate. Two clamping parts are slidingly provided on the turntable. The two clamping parts can slide close or away on the turntable. By placing the automobile die-casting to be polished on the turntable and then sliding the two clamping parts separately, the two clamping parts can respectively abut and clamp the die-casting from both sides of the automobile die-casting, thereby achieving the clamping and positioning of the die-casting, which is convenient for subsequent polishing of the die-casting.

[0004] However, during the use of the above-mentioned mechanism, after the operator places the die-casting on the turntable, its relative position relative to the turntable and the clamping part has been locked, and the clamping part can only clamp the part on the corresponding side of the clamping part along the direction in which it can slide. Sometimes, because the operator is not careful enough about the initial placement of the die-casting, or because the shape of the die-casting itself has certain irregularities, the clamping part cannot fully clamp the side of the die-casting, unless the operator picks up the die-casting from the turntable again and adjusts the placement position of the die-casting. However, the die-casting is generally a metal casting with a certain weight, which makes it difficult to pick it up. In addition, manually adjusting the clamping part of the die-casting is also a waste of operating time, resulting in low efficiency in adjusting the position of the die-casting before positioning. Utility Model Content

[0005] The purpose of this utility model is to address the deficiencies of the existing technology and propose a clamping device to solve the technical problem mentioned in the background technology that some grinding clamping and positioning devices require manual adjustment of the specific placement position of the workpiece to be ground, resulting in low efficiency in position adjustment of the workpiece to be ground before positioning.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A clamping device includes a mounting base, on which a placement disc with a horizontal surface is fixed via a mounting frame, a ring is rotatably mounted on the mounting base via a first driving mechanism, the ring is sleeved on the periphery of the placement disc, the two are concentric, and the ring can rotate relative to the placement disc, the top of the placement disc is flush with the top of the ring, the first driving mechanism is used to drive the ring to rotate, clamping plates are slidably provided on the ring and on both sides of the placement disc, a second driving mechanism is provided on the ring that is respectively driven and connected to the two clamping plates, the second driving mechanism is used to drive the two clamping plates to slide relative to each other.

[0008] Working principle:

[0009] This structure can be used to assist in positioning and clamping the workpiece before operation. The operator needs to place the workpiece to be processed on the placement disc. After that, the operator visually inspects the side of the workpiece that can be used for more adequate clamping. After judgment, the operator drives the ring to rotate through the first driving mechanism, and then the ring drives the two clamping plates to rotate to correspond to the side parts that can be fully clamped as visually inspected by the operator.

[0010] The operator then drives the two clamping plates relatively close together through the second driving mechanism until the two clamping plates fully clamp both sides of the workpiece, and then the operator can perform other operations based on the workpiece being firmly clamped and positioned.

[0011] The beneficial effects of the utility model are:

[0012] During the use of the present invention, the operator only needs to visually determine the side parts of the workpiece that can be fully clamped, and then the first driving mechanism can be used to drive the ring to rotate, and then the ring drives the two clamping plates to rotate to correspond to the side parts that can be fully clamped as visually determined by the operator, and then the second driving mechanism is used to simultaneously drive the two clamping plates closer together until the two clamping plates fully clamp both sides of the workpiece.

[0013] Therefore, during the use of this structure, the operator does not need to strictly place the workpiece on the placement disc according to a certain position. Afterwards, through the mutual cooperation of the first drive mechanism and the second drive mechanism, the two clamping plates can quickly clamp and position the workpiece from both sides of the workpiece. Compared with the background technology, it can reduce the operator's operation of moving the workpiece, and can also quickly and firmly clamp the workpiece through automated adjustment, thereby improving the clamping and positioning efficiency.

[0014] Furthermore, the first driving mechanism includes a first driving motor, a first driving shaft and a connecting frame. The first driving motor is fixedly connected to the mounting base. The first driving shaft is arranged at the output end of the first driving motor, and the first driving shaft is vertically upward and coaxial with the placement disc. The connecting frame is fixed between the first driving shaft and the ring, and the connecting frame and the mounting frame are staggered in space.

[0015] Furthermore, the second driving mechanism includes a second driving motor fixedly connected to the circular ring through a mounting rod, a second driving shaft arranged at the output end of the second driving motor, two threaded sleeves and two connecting rods. The second driving shaft is horizontally arranged and is located on one side below the circular ring. The second driving shaft is a screw structure. The thread directions of the second driving shaft on the two shaft sections are opposite with the midpoint as the boundary. The two threaded sleeves are respectively threadedly connected to the two opposite shaft sections on the second driving shaft. Two horizontal and collinear strip holes are opened on the circular ring. The two connecting rods are fixedly connected to the two threaded sleeves one by one, and the two connecting rods pass through the two strip holes one by one and are respectively fixedly connected to the two clamping plates. The connecting rods can slide horizontally along the corresponding strip holes.

[0016] Furthermore, a sliding lifting block with a wedge-shaped end is slidingly provided on the circular ring. The sliding lifting block slides through the bottom of one of the clamping plates, and the sliding direction of the sliding lifting block is consistent with that of the clamping plate. The end of the sliding lifting block with the wedge-shaped surface faces the placement disc.

[0017] Furthermore, a horizontal sliding groove is opened on the top surface of the circular ring, and a sliding driving block is slidably provided in the sliding groove. The sliding driving block is fixedly connected to the bottom of the sliding lifting block, and the sliding lifting block is in sliding contact with the top surface of the circular ring.

[0018] Furthermore, it also includes a connecting mechanism, which is arranged between one of the connecting rods and the sliding drive block. The connecting mechanism is used to drive the sliding drive block to slide away from the placement disc when the connecting rod drives the corresponding clamping plate to slide close to the placement disc, and is used to drive the sliding drive block to slide close to the placement disc when the connecting rod drives the corresponding clamping plate to slide away from the placement disc.

[0019] Furthermore, the connecting mechanism includes an intermediate rope and a horizontally retractable elastic member, the elastic member is arranged in the slide groove and connected to the sliding drive block, one end of the intermediate rope is connected to the connecting rod, and the other end thereof can be slidably passed through a through hole opened on the circular ring and connected to the sliding drive block.

[0020] Furthermore, the elastic member is made of a spring material. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is a front view of an embodiment of the utility model;

[0022] Figure 2 A schematic diagram of the assembly structure from a top view for placing the disc, ring, and clamping plate;

[0023] Figure 3 for Figure 1 Schematic diagram of the structure enlarged at point A in the middle.

[0024] Explanation of the accompanying drawings: mounting base 1, mounting frame 2, placing disc 3, ring 4, clamping plate 5, first drive motor 6, first drive shaft 7, connecting frame 8, mounting rod 9, second drive motor 10, second drive shaft 11, threaded sleeve 12, connecting rod 13, strip hole 14, sliding lifting block 15, slide groove 16, sliding drive block 17, middle rope 18, elastic member 19. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0026] like Figure 1 As shown, a clamping device includes a mounting base 1, on which a placement disc 3 with a horizontal disk surface is fixed by a mounting frame 2, and a ring 4 is rotatably mounted on the mounting base 1 through a first driving mechanism, and the ring 4 is sleeved on the outer periphery of the placement disc 3, the two are concentric, and the ring 4 can rotate relative to the placement disc 3, and the top of the placement disc 3 is flush with the top of the ring 4, the first driving mechanism is used to drive the ring 4 to rotate, and clamping plates 5 are respectively provided on the ring 4 and on both sides of the placement disc 3 for sliding, and a second driving mechanism is provided on the ring 4 that is respectively driven and connected to the two clamping plates 5, and the second driving mechanism is used to drive the two clamping plates 5 to slide relative to each other. During use of this structure, the operator does not need to strictly place the workpiece on the placement disc 3 according to a certain position. Afterwards, through the mutual cooperation of the first drive mechanism and the second drive mechanism, the two clamping plates 5 can quickly fully clamp and position the workpiece from both sides of the workpiece. Compared with the background technology, it can reduce the operator's operation of moving the workpiece, and can also quickly and firmly clamp the workpiece through automated adjustment, thereby improving the clamping and positioning efficiency.

[0027] like Figure 1 and Figure 2As shown, the first drive mechanism includes a first drive motor 6, a first drive shaft 7, and a connecting frame 8. The first drive motor 6 is fixedly connected to the mounting base 1. The first drive shaft 7 is located at the output end of the first drive motor 6 and is vertically upward and coaxial with the placement disk 3. The connecting frame 8 is fixed between the first drive shaft 7 and the ring 4. The connecting frame 8 and the mounting frame 2 are spatially offset. When the first drive motor 6 is started, it will drive the first drive shaft 7 to rotate, and the first drive shaft 7 will then drive the connecting frame 8 and the ring 4 to rotate. This automatic drive method is relatively simple and fast. The second driving mechanism includes a second driving motor 10 fixedly connected to the ring 4 through a mounting rod 9, a second driving shaft 11 provided at the output end of the second driving motor 10, two threaded sleeves 12 and two connecting rods 13. The second driving shaft 11 is horizontally arranged and is located on one side below the ring 4. The second driving shaft 11 is a screw structure. The thread directions of the second driving shaft 11 on the two shaft sections are opposite with the midpoint as the boundary. The two threaded sleeves 12 are respectively threadedly connected to the two opposite shaft sections on the second driving shaft 11. Two horizontal and collinear strip holes 14 are opened on the ring 4. The two connecting rods 13 are fixedly connected to the two threaded sleeves 12 one by one, and the two connecting rods 13 pass through the two strip holes 14 one by one and are respectively fixedly connected to the two clamping plates 5. The connecting rods 13 can slide horizontally along the corresponding strip holes 14. Start the second drive motor 10, which will drive the second drive shaft 11 to rotate, and then the second drive shaft 11 will drive the two threaded sleeves 12 to slide relative to each other, and then the connecting rod 13 will slide in the corresponding strip hole 14, thereby realizing the sliding of the two clamping plates 5 closer or farther away. This method is more efficient and stable. Here, the first drive motor 6 can drive the first drive shaft 7 to rotate forward and reverse, thereby avoiding the connection frame 8 and the mounting frame 2 from touching in space, ensuring the normal operation of the operation.

[0028] like Figure 1 and Figure 3 As shown, a sliding lift block 15 with a wedge-shaped end is slidably provided on the ring 4. The sliding lift block 15 slides through the bottom of one of the clamping plates 5, and the sliding direction of the sliding lift block 15 is consistent with that of the clamping plate 5, with the end of the sliding lift block 15 with the wedge-shaped surface facing the placement disc 3. When the clamping operation is completed, the operator can slide the sliding lift block 15, and the wedge-shaped end of the sliding lift block 15 can be inserted into the gap between the workpiece and the placement disc 3, thereby lifting the workpiece, providing a good fulcrum for the operator to pick up the workpiece, making it easier to pick up the workpiece.

[0029] like Figure 1 and Figure 3As shown, the top surface of the ring 4 is provided with a horizontal chute 16, in which a sliding drive block 17 is slidably provided. The sliding drive block 17 is fixedly connected to the bottom of the sliding lift block 15, and the sliding lift block 15 slides against the top surface of the ring 4. The sliding installation method of the sliding lift block 15 is achieved by this simple method. The invention also includes a connecting mechanism, which is arranged between one of the connecting rods 13 and the sliding drive block 17. The connecting mechanism is used to drive the sliding drive block 17 to slide away from the placement disc 3 when the connecting rod 13 drives the corresponding clamping plate 5 to slide toward the placement disc 3, and to drive the sliding drive block 17 to slide toward the placement disc 3 when the connecting rod 13 drives the corresponding clamping plate 5 to slide away from the placement disc 3. Through the linkage action of the connecting mechanism, when the clamping plate 5 slides away from the workpiece, the sliding lift block 15 can be driven to slide toward the workpiece and lift the workpiece. This linkage method is more efficient. The connecting mechanism includes an intermediate rope 18 and a horizontally retractable elastic member 19. The elastic member 19 is disposed within the slide groove 16 and connected to the sliding drive block 17. The elastic member 19 is made of a spring material. One end of the intermediate rope 18 is connected to the connecting rod 13, and the other end thereof slides through a hole formed in the ring 4 and is connected to the sliding drive block 17. This connecting mechanism is more simplified and more practical.

[0030] Working principle:

[0031] The operator needs to place the workpiece to be processed on the placement disc 3. After that, the operator visually inspects the side of the workpiece that can be used for more adequate clamping. After judgment, the operator drives the ring 4 to rotate through the first driving mechanism, and then the ring 4 drives the two clamping plates 5 to rotate to correspond to the side parts that can be fully clamped as visually inspected by the operator.

[0032] Specifically, the first drive motor 6 is started, and the first drive motor 6 drives the first drive shaft 7 to rotate, and then the first drive shaft 7 drives the connecting frame 8 and the ring 4 to rotate. This automatic driving method is relatively simple and fast.

[0033] Afterwards, the operator drives the two clamping plates 5 relatively close together through the second driving mechanism until the two clamping plates 5 fully clamp the two sides of the workpiece. Specifically, the second driving motor 10 is started, and the second driving motor 10 will drive the second driving shaft 11 to rotate, and then the second driving shaft 11 drives the two threaded sleeves 12 to slide relative to each other, and then the connecting rod 13 slides in the corresponding strip hole 14, thereby realizing the sliding of the two clamping plates 5 closer or farther away.

[0034] The operator can then perform other operations based on the workpiece being firmly clamped and positioned.

[0035] After the clamping operation is completed, the operator can use the clamping plate 5. When the clamping plate 5 slides away from the workpiece, the middle rope 18 begins to become loose, and then the elastic member 19 pushes the sliding lifting block 15 to slide close to the workpiece and lift the workpiece from the placement disc 3, making it easier for the operator to pick up.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A clamping device, characterized in that: The invention comprises a mounting base (1), on which a placement disc (3) with a horizontal surface is fixed via a mounting frame (2), a ring (4) is rotatably mounted on the mounting base (1) via a first driving mechanism, the ring (4) is sleeved on the periphery of the placement disc (3), the two are concentric, and the ring (4) can rotate relative to the placement disc (3), the top of the placement disc (3) and the top of the ring (4) are flush, the first driving mechanism is used to drive the ring (4) to rotate, clamping plates (5) are respectively slidably provided on the ring (4) and on both sides of the placement disc (3), the ring (4) is provided with a second driving mechanism that is respectively drivingly connected to the two clamping plates (5), and the second driving mechanism is used to drive the two clamping plates (5) to slide relative to each other.

2. A clamping device according to claim 1, characterized in that: The first driving mechanism comprises a first driving motor (6), a first driving shaft (7) and a connecting frame (8); the first driving motor (6) is fixedly connected to the mounting base (1); the first driving shaft (7) is arranged at the output end of the first driving motor (6); the first driving shaft (7) is vertically upward and coaxial with the placement disc (3); the connecting frame (8) is fixed between the first driving shaft (7) and the ring (4); and the connecting frame (8) and the mounting frame (2) are staggered in space.

3. The clamping device according to claim 1, characterized in that: The second driving mechanism comprises a second driving motor (10) fixedly connected to the ring (4) via a mounting rod (9), a second driving shaft (11) provided at the output end of the second driving motor (10), two threaded sleeves (12) and two connecting rods (13), wherein the second driving shaft (11) is horizontally arranged and located on one side below the ring (4), and the second driving shaft (11) is a screw structure, and the thread direction of the second driving shaft (11) on the two shaft sections is determined by taking the middle point as the boundary. On the contrary, the two threaded sleeves (12) are respectively threadedly connected to the two opposite shaft sections on the second driving shaft (11), and the circular ring (4) is provided with two horizontal and collinear strip holes (14). The two connecting rods (13) are fixedly connected to the two threaded sleeves (12) in a one-to-one correspondence, and the two connecting rods (13) pass through the two strip holes (14) in a one-to-one correspondence and are respectively fixedly connected to the two clamping plates (5). The connecting rods (13) can slide horizontally along the corresponding strip holes (14).

4. A clamping device according to claim 3, characterized in that: A sliding lifting block (15) with a wedge-shaped end is slidably provided on the ring (4). The sliding lifting block (15) slides through the bottom of one of the clamping plates (5), and the sliding direction of the sliding lifting block (15) is consistent with that of the clamping plate (5). The end of the sliding lifting block (15) with the wedge-shaped surface faces the placement disc (3).

5. A clamping device according to claim 4, characterized in that: A horizontal sliding groove (16) is provided on the top surface of the circular ring (4), and a sliding driving block (17) is slidably provided in the sliding groove (16). The sliding driving block (17) is fixedly connected to the bottom of the sliding lifting block (15), and the sliding lifting block (15) is in sliding contact with the top surface of the circular ring (4).

6. A clamping device according to claim 5, characterized in that: The invention also includes a connecting mechanism, which is arranged between one of the connecting rods (13) and the sliding drive block (17). The connecting mechanism is used to drive the sliding drive block (17) to slide away from the placement disc (3) when the connecting rod (13) drives the corresponding clamping plate (5) to slide close to the placement disc (3), and is used to drive the sliding drive block (17) to slide close to the placement disc (3) when the connecting rod (13) drives the corresponding clamping plate (5) to slide away from the placement disc (3).

7. A clamping device according to claim 6, characterized in that: The connecting mechanism comprises an intermediate rope (18) and a horizontally retractable elastic member (19), wherein the elastic member (19) is arranged in the slide groove (16) and connected to the sliding drive block (17), one end of the intermediate rope (18) is connected to the connecting rod (13), and the other end thereof is slidably passed through a hole provided on the ring (4) and connected to the sliding drive block (17).

8. The clamping device according to claim 7, characterized in that: The elastic member (19) is made of a spring material.

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