Vacuum adsorption clamp

Abstract

The utility model relates to the technical field of clamps, in particular to a vacuum adsorption clamp which comprises a vacuum adsorption device, a base, a vacuum pump and a suction cup, the vacuum pump is installed on the base, and the suction cup is arranged on the lower surface of the base and communicates with the vacuum pump; the clamping jaw comprises a left arc-shaped clamping plate, a right arc-shaped clamping plate and a middle arc-shaped clamping plate, the middle arc-shaped clamping plate is connected with the base through a hinge structure, the middle arc-shaped clamping plate is provided with a left hinge edge and a right hinge edge, and one end of the left arc-shaped clamping plate is rotationally connected with the left hinge edge of the middle arc-shaped clamping plate; one end of the right arc-shaped clamping plate is rotationally connected with the right hinged edge of the middle arc-shaped clamping plate, and the end, away from the middle arc-shaped clamping plate, of the left arc-shaped clamping plate and the end, away from the middle arc-shaped clamping plate, of the right arc-shaped clamping plate can be mutually opened or locked. Unstable conditions such as swinging and inclining of the workpiece are effectively prevented, and accurate positioning can be achieved in the clamping process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clamps, in particular to a vacuum adsorption clamp. BACKGROUND

[0002] At present, in the process of machining and carrying, the clamping and positioning of cylindrical special-shaped workpieces (such as L-shaped cylindrical workpieces, N-shaped cylindrical workpieces, etc.) has always been a technical difficulty. Due to the special geometric shape of such special-shaped workpieces, there is often a problem of center of gravity deviating from the central axis. When clamped by traditional mechanical clamps, unstable conditions such as workpiece swinging and tilting often occur, which makes it difficult to accurately position during clamping, especially during loading and unloading and carrying, the workpiece is easy to shake, which not only affects the production efficiency, but also may damage the surface of the workpiece, and even cause safety hazards. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to at least solve one of the above technical problems in the prior art to some extent. To this end, the present application provides a vacuum adsorption clamp, which is more stable during clamping and effectively prevents the workpiece from swinging, tilting and other conditions.

[0004] A vacuum adsorption clamp, comprising

[0005] A vacuum adsorption device, comprising a base, a vacuum pump and a suction cup, the vacuum pump is installed on the base, the suction cup is arranged on the lower surface of the base, the suction cup is in communication with the vacuum pump, and the suction port of the suction cup faces downward;

[0006] A claw, comprising a left side arc-shaped clamping plate, a right side arc-shaped clamping plate and a middle arc-shaped clamping plate, the middle arc-shaped clamping plate is connected with the base through a hinge structure, the middle arc-shaped clamping plate has a left side hinge edge and a right side hinge edge, one end of the left side arc-shaped clamping plate is rotationally connected with the left side hinge edge of the middle arc-shaped clamping plate, one end of the right side arc-shaped clamping plate is rotationally connected with the right side hinge edge of the middle arc-shaped clamping plate, and the end of the left side arc-shaped clamping plate away from the middle arc-shaped clamping plate and the end of the right side arc-shaped clamping plate away from the middle arc-shaped clamping plate can be opened or locked with each other, and after the left side arc-shaped clamping plate and the right side arc-shaped clamping plate are mutually butted and locked, the left side arc-shaped clamping plate, the right side arc-shaped clamping plate and the middle arc-shaped clamping plate together enclose an annular cavity for clamping a workpiece.

[0007] In an optional or preferred embodiment, a first locking device is arranged at the end of the left side arc-shaped clamping plate away from the middle arc-shaped clamping plate, and a second locking device is arranged at the end of the right side arc-shaped clamping plate away from the middle arc-shaped clamping plate, and the first locking device and the second locking device can be locked with each other.

[0008] In an optional or preferred embodiment, the first locking device is a rotating rod, one end of the rotating rod is hinged to one end of the left arc-shaped clamping plate away from the middle arc-shaped clamping plate, and the other end of the rotating rod is provided with a stopper, the second locking device is a locking seat provided at one end of the right arc-shaped clamping plate away from the middle arc-shaped clamping plate, a through hole for matching the rotating rod is horizontally formed on the locking seat, and an opening is formed on the side of the locking seat, the rotating rod can be clamped into the through hole through the opening, and the stopper is provided with a spherical structure corresponding to the through hole.

[0009] In an optional or preferred embodiment, the end face of the locking seat corresponding to one end of the stopper is a bevel, and an inclined groove for matching the rotating rod is arranged inside the through hole.

[0010] In an optional or preferred embodiment, the hinge structure comprises a first rotating plate and a second rotating plate, one end of the first rotating plate is hinged to the base, one end of the second rotating plate is hinged to the middle arc-shaped clamping plate, and the other end of the first rotating plate is hinged to the other end of the second rotating plate.

[0011] In an optional or preferred embodiment, the hinge structure further comprises a universal joint, and one end of the second rotating plate is connected to the middle arc-shaped clamping plate through the universal joint.

[0012] In an optional or preferred embodiment, the first rotating plate and the second rotating plate are both provided with a hollow hole.

[0013] In an optional or preferred embodiment, a plurality of suction cups are arranged, each of the suction cups is arranged on the lower surface of the base, and the suction ports of each of the suction cups are at the same height.

[0014] In an optional or preferred embodiment, one end of the left arc-shaped clamping plate away from the middle arc-shaped clamping plate is provided with a handle.

[0015] Based on the above technical solution, the embodiments of the present application have at least the following beneficial effects: on the one hand, the workpiece is pre-fixed by the suction cup, and then the workpiece is fixed again by the clamping jaw, and since the clamping jaw and the base are connected through the hinge structure, the positional relationship between the clamping jaw and the base can be adjusted, so that the flexibility of the clamping jaw is higher, even if the center of gravity of the workpiece deviates from the center axis, the workpiece can also be well clamped and positioned, effectively preventing the workpiece from swinging, tilting and other unstable conditions, and the workpiece can be accurately positioned during clamping. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in conjunction with the drawings and embodiments;

[0017] Figure 1 is a structural schematic diagram of a vacuum suction clamp provided by the embodiments of the present application;

[0018] Figure 2 is a structural schematic diagram of a vacuum adsorption clamp provided by another embodiment of the present application. DETAILED DESCRIPTION

[0019] In order to make the above objectives, characteristics and advantages of the present application more apparent, more comprehensible, the specific embodiments of the present application are described in detail below. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0020] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0021] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0022] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] In the present application, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intervening medium. Also, a first feature "over", "above" and "on top of" a second feature can be directly above or obliquely above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature. A first feature "under", "below" and "underneath" a second feature can be directly below or obliquely below the second feature, or simply indicate that the first feature is at a lower horizontal level than the second feature.

[0024] It should be noted that when an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0025] At present, during the machining and handling process, the clamping and positioning of cylindrical special-shaped workpieces (such as L-shaped cylindrical workpieces, N-shaped cylindrical workpieces, etc.) has always been a technical difficulty. Due to the special geometric shape of such special-shaped workpieces, there is often a problem of center of gravity deviating from the center axis. When clamped by traditional mechanical clamps, unstable conditions such as workpiece swinging and tilting often occur, making it difficult to accurately position during clamping. Especially during loading and unloading and handling, the workpiece is prone to shaking, which not only affects production efficiency, but also may damage the workpiece surface, and even cause safety hazards.

[0026] Referring to Figure 1 The present application provides a vacuum suction clamp, comprising a vacuum suction device 1 and a clamping jaw 2.

[0027] The vacuum suction device 1 comprises a base 10, a vacuum pump 11 and a suction disc 12. The vacuum pump 11 is installed on the base 10, and the suction disc 12 is arranged on the lower surface of the base 10. The suction disc 12 is in communication with the vacuum pump 11, and the suction port of the suction disc 12 faces downward. The vacuum pump 11 provides negative pressure for the suction disc 12, so that the suction disc 12 adsorbs and fixes the workpiece.

[0028] The clamping jaw 2 comprises a left arc-shaped clamping plate 20, a right arc-shaped clamping plate 21 and a middle arc-shaped clamping plate 22, the middle arc-shaped clamping plate 22 is connected with the base 10 through the hinge structure 3, the middle arc-shaped clamping plate 22 has a left hinged edge and a right hinged edge, one end of the left arc-shaped clamping plate 20 is rotationally connected with the left hinged edge of the middle arc-shaped clamping plate 22, one end of the right arc-shaped clamping plate 21 is rotationally connected with the right hinged edge of the middle arc-shaped clamping plate 22, the end of the left arc-shaped clamping plate 20 away from the middle arc-shaped clamping plate 22 and the end of the right arc-shaped clamping plate 21 away from the middle arc-shaped clamping plate 22 can be opened or locked to each other, after the left arc-shaped clamping plate 20 and the right arc-shaped clamping plate 21 are locked to each other, the left arc-shaped clamping plate 20, the right arc-shaped clamping plate 21 and the middle arc-shaped clamping plate 22 together enclose an annular cavity for clamping the workpiece. By connecting and locking the left arc-shaped clamping plate 20 and the right arc-shaped clamping plate 21 to each other, the workpiece is clamped between the left arc-shaped clamping plate 20, the right arc-shaped clamping plate 21 and the middle arc-shaped clamping plate 22.

[0029] In one aspect of the present application, the workpiece is pre-fixed by the suction cup 12, and then the workpiece is fixed again by the clamping jaw 2. Even if the center of gravity of the workpiece deviates from the center axis, the workpiece can be well clamped and positioned. Since the clamping jaw 2 is connected with the base 10 through the hinge structure 3, the positional relationship between the clamping jaw 2 and the base 10 can be adjusted, so that the flexibility of the clamping jaw 2 is higher. The L-shaped cylindrical workpiece and the N-shaped cylindrical workpiece can also be stably clamped by the clamping jaw 2, which effectively prevents the workpiece from swinging, tilting and other unstable conditions, and can be accurately positioned during clamping.

[0030] In the present application, the base 10 is a circular structure, the vacuum pump 11 is fixed at the middle of the top of the base 10, and the suction cup 12 is arranged at the bottom of the base 10.

[0031] In some other embodiments, a plurality of suction cups 12 are arranged, each suction cup 12 is arranged on the lower surface of the base 10, and the suction ports of each suction cup 12 are at the same height. Each suction cup 12 is in communication with the vacuum pump 11 through a separate pipeline, and the vacuum pump 11 provides suction force for each suction cup 12 when working. Each suction cup 12 is made of wear-resistant rubber material, which has good sealing performance and durability.

[0032] A first locking device is arranged at the end of the left arc-shaped clamping plate 20 away from the middle arc-shaped clamping plate 22, a second locking device is arranged at the end of the right arc-shaped clamping plate 21 away from the middle arc-shaped clamping plate 22, and the first locking device and the second locking device can be locked to each other. After the left arc-shaped clamping plate 20 and the right arc-shaped clamping plate 21 are closed through the first locking device and the second locking device, the closed state is maintained and they will not be separated, so as to clamp the cylindrical workpiece.

[0033] In the embodiments of the present application, the first locking device is a rotating rod 201, one end of the rotating rod 201 is hinged to one end of the left arc-shaped clamping plate 20 away from the middle arc-shaped clamping plate 22, the other end of the rotating rod 201 is provided with a stop block 202, the second locking device is a locking seat 210 provided on one end of the right arc-shaped clamping plate 21 away from the middle arc-shaped clamping plate 22, a through hole 211 for matching the rotating rod 201 is horizontally formed on the locking seat 210, an opening 212 is formed on the side of the locking seat 210, the rotating rod 201 can be clamped into the through hole 211 through the opening 212, and a spherical structure 203 corresponding to the through hole 211 is arranged on the stop block 202.

[0034] Specifically, a connecting seat is arranged on the side of the left arc-shaped clamping plate 20 away from the middle arc-shaped clamping plate 22, the rotating rod 201 is hinged to the connecting seat through a hinge shaft, and the rotating rod 201 can rotate horizontally relative to the connecting seat. The locking seat 210 is arranged on the side of the right arc-shaped clamping plate 21 away from the middle arc-shaped clamping plate 22, the through hole 211 is horizontally formed on the locking seat 210, and the opening 212 is horizontally arranged on the locking seat 210, the opening 212 extends along the axial direction of the through hole 211, when the first locking device and the second locking device need to be locked, the left arc-shaped clamping plate 20 and the right arc-shaped clamping plate 21 are rotated to be close to each other, then the rotating rod 201 is clamped into the through hole 211 from the opening 212 of the locking seat 210, at this time, the spherical structure 203 on the stop block 202 is embedded into the through hole 211, so that the rotating rod 201 and the locking seat 210 are clamped tightly.

[0035] Further, the end face of one end of the locking seat 210 corresponding to the stop block 202 is a bevel 213, so that after the rotating rod 201 is rotated to the inside of the through hole 211, the spherical structure 203 on the stop block 202 can be more conveniently embedded into the through hole 211.

[0036] In addition, an inclined groove for matching the rotating rod 201 is arranged in the through hole 211. This design can guide the rotating rod 201 to be smoothly inserted and locked.

[0037] In order to facilitate rotation, in some embodiments, a handle 204 is arranged on one end of the left arc-shaped clamping plate 20 away from the middle arc-shaped clamping plate 22. When the left arc-shaped clamping plate 20 is rotated, the worker can hold the handle 204 to rotate, which is more convenient to use.

[0038] In some embodiments, the hinge structure 3 comprises a first rotating plate 30 and a second rotating plate 31, one end of the first rotating plate 30 is hinged to the base 10, one end of the second rotating plate 31 is hinged to the middle arc-shaped clamping plate 22, the other end of the first rotating plate 30 is hinged to the other end of the second rotating plate 31.

[0039] Specifically, the edge of the lower surface of the base 10 is provided with a first hinge seat, one end of the first rotating plate 30 is rotationally connected with the first hinge seat, the middle part of the one side of the middle arc-shaped clamping plate 22 is provided with a second hinge seat, and one end of the second rotating plate 31 is rotationally connected with the middle arc-shaped clamping plate 22 through the second hinge seat.

[0040] The position between the clamping jaw 2 and the vacuum adsorption device 1 can be adjusted through the hinge structure 3, and when the suction disc 12 of the vacuum adsorption device 1 is adsorbed well, the clamping jaw 2 can be clamped through adjustment.

[0041] Referring to Figure 2 In other embodiments, the hinge structure 3 further comprises a universal joint 32, and the second rotating plate 31 is connected with the middle arc-shaped clamping plate 22 through the universal joint 32. In this way, the flexibility of the clamping jaw 2 can be further improved.

[0042] The first rotating plate 30 and the second rotating plate 31 are both provided with a hollow hole, so that the weight of the entire hinge structure 3 can be reduced, and the hollow hole can also be used for passing through a gas pipe or an electric wire.

[0043] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art in the technical field without departing from the purpose of the present application.

Claims

1. A vacuum adsorption fixture, characterized in that: include A vacuum adsorption device includes a base, a vacuum pump, and a suction cup. The vacuum pump is mounted on the base, and the suction cup is disposed on the lower surface of the base. The suction cup is connected to the vacuum pump, and the adsorption port of the suction cup faces downward. The chuck includes a left arc-shaped chuck plate, a right arc-shaped chuck plate, and a middle arc-shaped chuck plate. The middle arc-shaped chuck plate is connected to the base via a hinge structure. The middle arc-shaped chuck plate has a left hinge edge and a right hinge edge. One end of the left arc-shaped chuck plate is rotatably connected to the left hinge edge of the middle arc-shaped chuck plate, and one end of the right arc-shaped chuck plate is rotatably connected to the right hinge edge of the middle arc-shaped chuck plate. The ends of the left arc-shaped chuck plate and the right arc-shaped chuck plate that are away from the middle arc-shaped chuck plate can be opened or locked together. After the left arc-shaped chuck plate and the right arc-shaped chuck plate are mated and locked together, the left arc-shaped chuck plate, the right arc-shaped chuck plate, and the middle arc-shaped chuck plate together form an annular cavity for clamping the workpiece.

2. The vacuum adsorption fixture according to claim 1, characterized in that: A first locking device is provided at the end of the left arc-shaped card plate away from the middle arc-shaped card plate, and a second locking device is provided at the end of the right arc-shaped card plate away from the middle arc-shaped card plate. The first locking device and the second locking device can lock each other.

3. The vacuum adsorption fixture according to claim 2, characterized in that: The first locking device is a rotating rod, one end of which is hinged to the end of the left arc-shaped plate away from the middle arc-shaped plate, and the other end of which is provided with a stop. The second locking device is a locking seat provided on the right arc-shaped plate away from the middle arc-shaped plate. The locking seat has a through hole for engaging the rotating rod, and an opening is provided on the side of the locking seat. The rotating rod can be inserted into the through hole through the opening. The stop is provided with a spherical structure corresponding to the through hole.

4. The vacuum adsorption fixture according to claim 3, characterized in that: The end face of the locking seat corresponding to the stop is inclined, and the through hole is provided with an inclined groove for cooperating with the rotating rod.

5. The vacuum adsorption fixture according to claim 1, characterized in that: The hinge structure includes a first rotating plate and a second rotating plate. One end of the first rotating plate is hinged to the base, one end of the second rotating plate is hinged to the intermediate arc-shaped plate, and the other end of the first rotating plate is hinged to the other end of the second rotating plate.

6. The vacuum adsorption fixture according to claim 5, characterized in that: The hinge structure also includes a universal joint, and one end of the second rotating plate is connected to the intermediate arc-shaped plate through the universal joint.

7. The vacuum adsorption fixture according to claim 5, characterized in that: Both the first rotating plate and the second rotating plate are provided with hollow holes.

8. The vacuum adsorption fixture according to any one of claims 1 to 7, characterized in that: Multiple suction cups are provided, and each suction cup covers the lower surface of the base, with the suction ports of each suction cup at the same height.

9. The vacuum adsorption fixture according to any one of claims 1 to 7, characterized in that: A handle is provided at the end of the left arc-shaped card plate away from the middle arc-shaped card plate.

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