Clamping and taking device

Abstract

The utility model discloses a piece clamping and taking device which comprises a connecting fixing frame, a driving mechanism, a transverse rod, two connecting rods and two clamping arms, the two connecting rods are hinged to the two ends of the transverse rod respectively, the other ends of the two connecting rods are hinged to the upper ends of the two clamping arms respectively, and the two clamping arms are hinged to the driving mechanism. The driving mechanism is vertically arranged at the top of the connecting fixing frame, the output end of the driving mechanism is connected with the middle of the transverse rod below the driving mechanism, a rotating shaft is arranged in the middle of each clamping arm, and the two ends of each rotating shaft are rotationally connected with the connecting fixing frame. According to the workpiece clamping and taking device, a driving part of horizontal movement of the mechanical arm is converted into vertical movement, the installation space is saved, meanwhile, the clamping arms on the two sides move synchronously, it is guaranteed that the clamping center is fixed, the position of a clamped workpiece is accurate, deviation cannot occur, the clamping arms on the two sides cannot be opened, the clamping force is larger after the workpiece is clamped, and the workpiece clamping efficiency is improved. And clamping is more stable.

Description

Technical Field

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

[0002] In mechanical production and processing, clamping devices are often used to clamp workpieces or products so as to load and unload workpieces. There are many clamping methods for clamping devices commonly used today, such as using the finger cylinder disclosed in the publication number CN210525129U to clamp the workpiece, or using two cylinders to clamp the workpiece with a rotating jaw as in the publication number CN114290362A. The driving method of the cylinder in the above two methods is to drive the jaws horizontally to close and clamp the workpiece. The defects are also obvious, the clamping force is not enough, especially for heavier workpieces, the clamping cannot be guaranteed. If two cylinders are used, first, the installation space of the cylinder needs to be increased, and second, the two cylinders may be out of sync during operation, resulting in changes in the clamping center position of the two jaws. Therefore, it is necessary to study a clamping device with sufficient clamping force. Utility Model Content

[0003] The utility model aims to solve the above problems and designs a clamping and taking device, which solves the problems of insufficient clamping force and relatively large installation space occupied by the existing clamping devices.

[0004] The technical solution of the utility model to achieve the above-mentioned purpose is a clamping and picking device, including a connecting and fixing frame, a driving mechanism, a cross bar, a connecting rod and a clamping arm, wherein two connecting rods and two clamping arms are respectively provided, and the two connecting rods are respectively hinged at the two ends of the cross bar, and the other ends of the two connecting rods are respectively hinged to the upper ends of the two clamping arms, the driving mechanism is vertically arranged on the top of the connecting and fixing frame, and the output end of the driving mechanism is connected to the middle part of the cross bar below, and a rotating shaft is provided in the middle part of each clamping arm, and both ends of the rotating shaft are rotatably connected to the connecting and fixing frame.

[0005] Preferably, the driving mechanism adopts a clamping cylinder, the output end of the clamping cylinder is connected to a synchronization rod, the lower end of the synchronization rod is fixedly connected to the middle part of the cross bar, and the cross bar is located on the inner side of the connecting and fixing frame.

[0006] Preferably, a guide sleeve is provided on the top of the connecting and fixing frame, a cylinder seat is provided on the top of the guide sleeve, the clamping cylinder is vertically mounted and fixed on the cylinder seat, and the synchronization rod is located on the inner side of the guide sleeve and is slidably connected to the guide sleeve up and down.

[0007] Preferably, a clamping claw is provided at the lower end of the clamping arm, and a detachable clamping block is provided at the bottom of the clamping claw.

[0008] Preferably, a card slot matching the shape of the product is provided on the side of the card block.

[0009] Preferably, both sides of the connecting and fixing frame have openings, and the upper end of the clamping arm passes through the opening and is hinged to the connecting rod.

[0010] Preferably, baffles are provided at the openings on both sides of the connecting and fixing frame, and the clamping arms are located on the inner sides of the baffles.

[0011] Compared with the prior art, the beneficial effects are:

[0012] The utility model drives the cross bar to move up and down through the driving mechanism, thereby driving the two clamping arms to rotate relative to the connected fixing frame through the connecting rod hinged to the two ends of the cross bar, thereby realizing the opening or closing of the clamping arms and tightening the product. The device converts the driving part of the horizontal movement of the mechanical arm into vertical movement, saving installation space. At the same time, the clamping arms on both sides move synchronously to ensure that the clamping center is fixed. After the workpiece is clamped, the position is accurate and will not deviate. The clamping arms on both sides will not open. After the workpiece is clamped, the clamping force is greater and the clamping is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the clamping and picking device in the utility model;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the clamping and taking device in the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the clamping and removing device removing the connecting fixing frame.

[0016] In the figure, 1, connecting bracket; 2, clamping cylinder; 3, cylinder seat; 4, guide sleeve; 5, clamping arm; 6, clamping claw; 7, clamping block; 71, clamping slot; 8, cross bar; 9, connecting rod; 10, synchronization rod; 11, rotating shaft; 12, baffle. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1 and Figure 2As shown, a preferred embodiment of the utility model proposes a clamping and removing device, which mainly includes a connecting and fixing frame 1, a clamping cylinder 2, a cross bar 8, a connecting rod 9, a clamping arm 5, a clamping claw 6 and other components, wherein the overall shape of the connecting and fixing frame 1 is an inverted T shape, a guide sleeve 4 is arranged on the top of the connecting and fixing frame 1, the middle of the guide sleeve 4 is hollow, the clamping cylinder 2 is vertically mounted on a cylinder seat 3 located on the top of the guide sleeve 4, a synchronization rod 10 is arranged on the inner side of the guide sleeve 4, the output end of the clamping cylinder 2 is connected to the upper end of the synchronization rod 10, the lower end of the synchronization rod 10 passes through the guide sleeve 4 and is fixedly connected to the middle part of the cross bar 8, the cross bar 8 is located on the inner side of the connecting and fixing frame 1, and the output end of the clamping cylinder 2 controls the telescopic movement of the synchronization rod 10, thereby driving the cross bar 8 to move up and down.

[0019] In this embodiment, the clamping cylinder 2 provides power for clamping. The cylinder shown in the figure is a two-stage booster cylinder with strong power. In other technical solutions, an oil cylinder, an electric cylinder, etc. can also be used instead.

[0020] refer to Figure 3 The crossbar 8 is in the shape of an "I" character, and two connecting rods 9 are provided, and the two ends of the crossbar 8 are respectively hinged to the two connecting rods 9. U-shaped openings are provided on both sides of the connecting frame 1, and the two clamping arms 5 are respectively located on both sides of the connecting frame 1. The upper ends of the clamping arms 5 pass through the openings and are hinged to the crossbar 8. A rotating shaft 11 is provided near the middle of the clamping arm 5, and the two ends of the rotating shaft 11 are rotatably connected to the two sides of the opening on the connecting frame 1. When the output end of the clamping cylinder 2 drives the synchronous rod 10 to move telescopically, it will drive the crossbar 8 to move up and down, and then drive the two clamping arms 5 to open or close through the connecting rod 9.

[0021] The guide sleeve 4 is provided with oil-free lubricating bearings, and the synchronization rod 10 passes through the oil-free lubricating bearings at the upper and lower ends. The oil-free lubricating bearings hold the synchronization rod 10 to eliminate lateral movement, thereby ensuring that the clamping arm 5 does not shake left and right.

[0022] Since the synchronization rod 10 is locked and fixed in position by the guide sleeve 4, when the cylinder retracts, the centers of the cross bar 8, the connecting rod 9 and the rotating shaft 11 are on the same axis, forming a dead point of the mechanical structure, so that the clamping force is greater and it is not easy to loosen.

[0023] In order to limit the opening angle of the clamping arms 5, baffles 12 are provided at the openings connecting the two sides of the fixing frame 1. The clamping arms 5 are located on the inner side of the baffles 12. When the two clamping arms 5 are opened to the maximum angle, the baffles 12 will block and limit the clamping arms 5.

[0024] like Figure 3As shown, two clamping jaws 6 are provided, which are respectively installed at the lower ends of the two clamping arms 5. The angle between the clamping jaw 6 and the clamping arm 5 is an obtuse angle, which can improve the clamping force of the clamping jaw 6. A clamping block 7 is provided at the bottom of each clamping jaw 6, and the clamping block 7 is generally fixed to the clamping jaw 6 by screws. A clamping groove 71 is provided on the side of the clamping block 7, and the shape of the clamping groove 71 is adapted to the shape of the part to be clamped on the product. When the clamping arm 5 is closed, the two clamping blocks 7 will clamp the part to be clamped on the product.

[0025] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the utility model. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the utility model and fall within the protection scope of the utility model.

Claims

1. A clamping and removing device, characterized in that: The invention comprises a connecting frame (1), a driving mechanism, a cross bar (8), a connecting rod (9) and a clamping arm (5), wherein two connecting rods (9) and two clamping arms (5) are provided respectively, and the two connecting rods (9) are respectively hinged at the two ends of the cross bar (8), and the other ends of the two connecting rods (9) are respectively hinged to the upper ends of the two clamping arms (5), and the driving mechanism is vertically arranged on the top of the connecting frame (1), and the output end of the driving mechanism is connected to the middle part of the cross bar (8) below, and a rotating shaft (11) is provided in the middle part of each clamping arm (5), and both ends of the rotating shaft (11) are rotatably connected to the connecting frame (1).

2. A clamping and removing device according to claim 1, characterized in that: The driving mechanism adopts a clamping cylinder (2), the output end of the clamping cylinder (2) is connected to a synchronization rod (10), the lower end of the synchronization rod (10) is fixedly connected to the middle part of a cross bar (8), and the cross bar (8) is located on the inner side of the connecting and fixing frame (1).

3. A clamping and removing device according to claim 2, characterized in that: A guide sleeve (4) is arranged on the top of the connecting and fixing frame (1), a cylinder seat (3) is arranged on the top of the guide sleeve (4), the clamping cylinder (2) is vertically mounted and fixed on the cylinder seat (3), and the synchronization rod (10) is located on the inner side of the guide sleeve (4) and is slidably connected to the guide sleeve (4) up and down.

4. A clamping and removing device according to claim 1, characterized in that: The lower end of the clamping arm (5) is provided with a clamping claw (6), and the bottom of the clamping claw (6) is provided with a detachable clamping block (7).

5. A clamping and removing device according to claim 4, characterized in that: A card slot (71) matching the shape of the product is provided on the side of the card block (7).

6. The clamping and removing device according to claim 1, characterized in that: Both sides of the connecting and fixing frame (1) have openings, and the upper end of the clamping arm (5) passes through the opening and is hinged to the connecting rod (9).

7. A clamping and removing device according to claim 6, characterized in that: Baffles (12) are provided at the openings on both sides of the connecting and fixing frame (1), and the clamping arm (5) is located on the inner side of the baffle (12).

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