Pneumatic clamp

Abstract

The invention relates to a pneumatic clamp. The pneumatic clamp comprises a support body, a driving assembly, a tensioning sliding block assembly and a pressing assembly. The driving assembly is connected with the support body and comprises a first sliding part. The tensioning sliding block assembly is installed on the support body in a sliding mode, the tensioning sliding block assembly comprises a second sliding part and a third sliding part, and the first sliding part is matched with the second sliding part; the pressing assembly is installed on the support body in a sliding mode. The pressing assembly comprises a fourth sliding part matched with the third sliding part. The driving assembly moves in the first direction so as to drive the tensioning sliding block assembly to move in the second direction and drive the pressing assembly to move in the third direction. According to the pneumatic clamp, on one hand, pneumatic driving is adopted, so that the clamping force is controllable, and the time for loading and unloading the workpiece can be shortened, and on the other hand, the tensioning sliding block assembly and the pressing assembly on the two sides are linked, so that it is guaranteed that the position of the clamped workpiece is always in a centered state, deviation is avoided, and the clamping efficiency is improved. And the machining precision of the workpiece is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of clamps, and in particular to a pneumatic clamp. Background Art

[0002] Clamps are widely used in industrial production processes such as automated production lines. However, different materials have different sizes, so there are different designs for clamps. In order to shorten downtime and improve production efficiency, clamps are required to have good versatility to suit materials of different sizes.

[0003] Existing traditional clamps basically require manual clamping, which takes a long time to put the workpiece on and off. It is also not easy for users to control the clamping force when manually clamping the workpiece. If the clamping force is too small, the workpiece will become loose. If the clamping force is too large, it may cause damage to the workpiece. In addition, there is a clamp that uses electric or pneumatic drive, which is equipped with multiple clicks or cylinders to drive the clamping head to clamp the workpiece. However, since the clamping head is driven by different cylinders, the distance moved by each clamping head will deviate, which is not conducive to the centering of the workpiece. It may cause a slight deviation in the position of the workpiece clamped each time, thereby affecting the processing accuracy of the workpiece. Summary of the invention

[0004] The purpose of the present invention is to provide a pneumatic clamp, which aims to solve the technical problems that the existing clamps are inconvenient to control the clamping force, take a long time to move the workpiece up and down, and have low clamping and positioning accuracy of the workpiece.

[0005] In order to solve the above technical problems, a pneumatic clamp is provided, comprising:

[0006] The support body;

[0007] A driving assembly connected to the support body, wherein the driving assembly includes a first sliding portion;

[0008] A tensioning slider assembly is slidably mounted on the bracket body, the tensioning slider assembly comprises a second sliding portion and a third sliding portion, the first sliding portion cooperates with the second sliding portion;

[0009] A clamping assembly is slidably mounted on the bracket body, and the clamping assembly includes a fourth sliding portion that cooperates with the third sliding portion;

[0010] The driving assembly moves along a first direction to drive the tensioning slider assembly to move along a second direction and drive the clamping assembly to move along a third direction, wherein the first direction is perpendicular to the second direction and the second direction is opposite to the third direction.

[0011] Further, the first sliding part is configured as a first sliding block, the second sliding part is configured as a first sliding groove, the third sliding part is configured as a second sliding block, and the fourth sliding part is configured as a second sliding groove.

[0012] Furthermore, the first sliding groove has a first inclined surface matched with the first sliding block; the second sliding groove has a second inclined surface matched with the second sliding block.

[0013] Furthermore, the tensioning slider assembly includes a first tensioning slider and a second tensioning slider, the first tensioning slider is slidably installed on the bracket body, the second tensioning slider is fixedly installed on the first tensioning slider, the first slide groove is arranged on the first tensioning slider, and the second slider is arranged on the second tensioning slider.

[0014] Furthermore, the clamping assembly includes a clamping slider and a pressure head, the clamping slider is slidably mounted on the bracket body, the pressure head is fixedly mounted on the clamping slider, and the fourth sliding portion is arranged on the clamping slider.

[0015] Furthermore, the pneumatic clamp also includes a guide assembly, which includes a fixed plate and a guide rail. The fixed plate is installed on the bracket body, and the guide rail is fixedly installed on the fixed plate. A guide groove that cooperates with the guide rail is formed on the clamping slide.

[0016] Furthermore, the tensioning slider assembly and the clamping assembly are each provided with two groups, and are respectively arranged on opposite sides of the driving assembly, and the driving assembly simultaneously drives the two groups of the tensioning slider assemblies and the two groups of the clamping assemblies to be linked.

[0017] Furthermore, the driving assembly includes a driving member and a pushing head, the pushing head is connected to the driving member, and the first sliding portion is arranged on the pushing head.

[0018] Furthermore, the bracket body includes a sliding groove, and a sliding protrusion corresponding to the sliding groove is formed on the tensioning slider assembly.

[0019] Furthermore, the bracket body includes a first pressing block, a second pressing block and a third pressing block, a mounting plate, a support block and a bottom plate which are connected in sequence, the sliding groove is formed on the third pressing block, and the driving assembly is mounted on the mounting plate.

[0020] Implementing the embodiments of the present invention will have the following beneficial effects:

[0021] The pneumatic clamp in this embodiment is provided with a driving component to drive the tensioning slider assembly to move and drive the clamping component to move, thereby achieving the clamping of the workpiece. When the driving component moves upward, the first sliding part and the second sliding part cooperate to make the tensioning slider assemblies on both sides move along the second direction. At this time, the cooperation of the third sliding part and the fourth sliding part further drives the clamping assemblies on both sides to move along the third direction to achieve the clamping of the workpiece. A driving component is provided. On the one hand, it is pneumatically driven, so that the clamping force is controllable and the time for raising and lowering the workpiece can be shortened. On the other hand, it is driven by a driving component so that the tensioning slider assemblies and the clamping assemblies on both sides are linked through the cooperation of the first sliding part, the second sliding part, the third sliding part and the fourth sliding part, thereby ensuring that the position of the clamped workpiece is always in a centered state and will not be offset, which is beneficial to improving the processing accuracy of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the pneumatic clamp according to an embodiment of the present invention;

[0024] Figure 2 is a cross-sectional view of a pneumatic clamp according to an embodiment of the present invention;

[0025] Figure 3 An exploded view of a pneumatic clamp according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the pneumatic clamp according to an embodiment of the present invention after the bracket body is removed;

[0027] Figure 5 It is a structural schematic diagram of the tensioning slider assembly according to an embodiment of the present invention;

[0028] Figure 6 It is a schematic structural diagram of the clamping slider according to an embodiment of the present invention.

[0029] Wherein: 100, pneumatic clamp; 110, bracket body; 111, first pressure block; 112, second pressure block; 113, third pressure block; 1131, sliding groove; 114, mounting plate; 115, support block; 116, bottom plate; 120, drive assembly; 121, drive member; 122, push head; 1211, first sliding part; 130, tensioning slider assembly; 131, first tensioning slider; 1311, second sliding part; 1312, first inclined surface; 1313, sliding protrusion; 132, second tensioning slider; 1321, third sliding part; 140, clamping assembly; 141, clamping slider; 1411, fourth sliding part; 1412, second inclined surface; 1413, guide groove; 142, pressure head; 150, guide assembly; 151, fixing plate; 152, guide rail; X, center;

[0030] 200. Workpiece. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] Please refer to Figure 1-Figure 6The embodiment of the present invention provides a pneumatic clamp 100, including a support body 110, a driving assembly 120, a tensioning slider assembly 130 and a clamping assembly 140. The driving assembly 120 is connected to the support body 110, and the driving assembly 120 includes a first sliding portion 1211; the tensioning slider assembly 130 is slidably mounted on the support body 110, and the tensioning slider assembly 130 includes a second sliding portion 1311 and a third sliding portion 1321, and the first sliding portion 1211 cooperates with the second sliding portion 1311; the clamping assembly 140 is slidably mounted on the support body 110, and the clamping assembly 140 includes a fourth sliding portion 1411 that cooperates with the third sliding portion 1321; the driving assembly 120 moves along a first direction to drive the tensioning slider assembly 130 to move along a second direction, and drives the clamping assembly 140 to move along a third direction, wherein the first direction is perpendicular to the second direction, and the second direction is opposite to the third direction. Exemplarily, it should be noted that there are two tensioning slider assemblies 130 and two clamping assemblies 140, and they are respectively arranged on opposite sides of the driving assembly 120 with the driving assembly 120 as the center X. The clamping assembly 140 is used as a clamping component to clamp the workpiece 200. The core invention of the present application is that the driving assembly 120 can simultaneously drive the tensioning slider assemblies 130 on both sides to move synchronously along the second direction, and then the tensioning slider assemblies 130 on both sides synchronously drive the clamping assemblies 140 on both sides to move along the third direction. In other words, the clamp of the present application can realize the linkage of the clamping assemblies 140 on both sides through one driving assembly 120. In addition, it should be noted that the first direction is a vertical direction, and the second direction and the third direction are both horizontal directions. At the same time, the second direction is defined as a horizontal direction moving toward the center X direction of the driving assembly 120, and the third direction is defined as a horizontal direction moving toward the center X direction away from the driving assembly 120. It can be understood that the second direction and the third direction are both perpendicular to the center X of the driving assembly 120, and the first direction is parallel to the center X of the driving assembly 120.

[0035] Please refer to Figure 2 , Figure 3 and Figure 4In the pneumatic clamp 100 of this embodiment, a driving assembly 120 is provided to drive the tensioning slider assembly 130 to move, and drive the clamping assembly 140 to move, so as to achieve the clamping of the workpiece 200. When the driving assembly 120 moves upward, the first sliding portion 1211 and the second sliding portion 1311 cooperate to make the tensioning slider assemblies 130 on both sides move along the second direction. At this time, the cooperation of the third sliding portion 1321 and the fourth sliding portion 1411 further drives the clamping assemblies 140 on both sides to move along the third direction, so as to achieve the clamping of the workpiece 200. A driving component 120 is pneumatically driven on the one hand, so that the clamping force can be controlled and the time of the upper and lower workpieces 200 can be shortened. On the other hand, a driving component 120 is used to drive the tensioning slider assembly 130 and the clamping assembly 140 on both sides to achieve linkage through the cooperation of the first sliding part 1211, the second sliding part 1311, the third sliding part 1321 and the fourth sliding part 1411, thereby ensuring that the position of the clamped workpiece 200 is always in a centered state and will not shift, which is beneficial to improving the processing accuracy of the workpiece 200.

[0036] Please refer to Figure 2 , Figure 5 and Figure 6In a possible implementation, the first sliding portion 1211 is configured as a first sliding block, the second sliding portion 1311 is configured as a first sliding groove, the third sliding portion 1321 is configured as a second sliding block, and the fourth sliding portion 1411 is configured as a second sliding groove. Exemplarily, the first sliding portion 1211 and the second sliding portion 1311 are used as a matching combination, and the third sliding portion 1321 and the fourth sliding portion 1411 are used as a matching combination. In this embodiment, the first sliding portion 1211 and the third sliding portion 1321 are set as sliders, and the second sliding portion 1311 and the fourth sliding portion 1411 are set as slide grooves. Of course, as an alternative, the first sliding portion 1211 and the third sliding portion 1321 can be set as slide grooves, and the second sliding portion 1311 and the fourth sliding portion 1411 can be set as sliders, or the first sliding portion 1211 and the fourth sliding portion 1411 can be set as sliders, and the second sliding portion 1311 and the third sliding portion 1321 can be set as slide grooves, or the second sliding portion 1311 and the third sliding portion 1321 can be set as sliders, and the first sliding portion 1211 and the fourth sliding portion 1411 can be set as slide grooves. There are no excessive restrictions here, and it can be adjusted according to actual needs. In addition, it should be noted that the first slider and the second slider are both T-shaped, the first chute and the second chute are both T-shaped, the first slider and the first chute are matched in shape and size, and the second slider and the second chute are matched in shape and size. The shapes of the first slider, the second slider, the first chute and the second chute are obtained by wire cutting. Wire cutting can be very accurately cut according to the preset path to ensure that the size and shape accuracy of the parts meet the strict design requirements. The surface after wire cutting is usually smooth, which is conducive to the sliding fit of the first slider and the first chute, as well as the sliding fit of the second slider and the second chute, which is conducive to further maintaining the centering state of the clamping position of the workpiece 200. When the clamping assembly 140 moves relative to the tensioning slider assembly 130, the clamping assembly 140 will not be separated from the tensioning slider assembly 130. In addition, since there are two clamping assemblies 140 relative to the tensioning slider assembly 130, it can be understood that there are also two first sliders, two second sliders, two first slide grooves and two second slide grooves, which are symmetrically distributed along the center X of the driving assembly 120, which is beneficial to the linkage of the two clamping assemblies 140, so that the workpiece 200 can be centered during the clamping process.

[0037] Please refer to Figure 2 , Figure 5 and Figure 6In a possible embodiment, the first slide groove has a first inclined surface 1312 that cooperates with the first slider; the second slide groove has a second inclined surface 1412 that cooperates with the second slider. Exemplarily, the first inclined surface 1312 and the second inclined surface 1412 are used to ensure the precise linkage of the tension slider assembly 130 and the clamping assembly 140. Specifically, the first inclined surface 1312 cooperates with the first slider, and the second inclined surface 1412 cooperates with the second slider. Such a design allows the tension slider assembly 130 to move smoothly in the second direction and drive the clamping assembly 140 to move in the third direction through the interaction of these inclined surfaces when the drive assembly 120 moves in the first direction. This structure not only ensures the controllability of the clamping force of the workpiece 200, but also helps to maintain the centering state of the clamping position of the workpiece 200 because all actions are uniformly controlled by a drive assembly 120, thereby avoiding the position of the workpiece 200 from being offset and improving the processing accuracy.

[0038] Please refer to Figure 2 , Figure 3 and Figure 4 In a possible implementation, the tensioning slider assembly 130 includes a first tensioning slider 131 and a second tensioning slider 132, the first tensioning slider 131 is slidably mounted on the bracket body 110, the second tensioning slider 132 is fixedly mounted on the first tensioning slider 131, the first slide groove is arranged on the first tensioning slider 131, and the second slider is arranged on the second tensioning slider 132. Exemplarily, the second tensioning slider 132 is fixedly mounted on the first tensioning slider 131 using screws.

[0039] Please refer to Figure 2 , Figure 3 and Figure 4 In a possible implementation, the clamping assembly 140 includes a clamping slider 141 and a pressing head 142. The clamping slider 141 is slidably mounted on the bracket body 110, the pressing head 142 is fixedly mounted on the clamping slider 141, and the fourth sliding portion 1411 is disposed on the clamping slider 141. Exemplarily, the pressing head 142 is used as a clamping component for clamping the workpiece 200. The pressing head 142 is fixedly mounted on the clamping slider 141 by screws. In addition, it should be noted that the pressing head 142 is replaceable, and a specific pressing head 142 can be replaced according to different shapes of the workpiece 200, thereby improving the versatility of the fixture.

[0040] Please refer to Figure 2 , Figure 3 and Figure 4In a possible embodiment, the pneumatic clamp 100 further includes a guide assembly 150, which includes a fixed plate 151 and a guide rail 152. The fixed plate 151 is mounted on the bracket body 110, and the guide rail 152 is fixedly mounted on the fixed plate 151. A guide groove 1413 that cooperates with the guide rail 152 is formed on the clamping slider 141. Exemplarily, the fixed plate 151 is mounted on the bracket body 110 by screws, and the guide rail 152 is fixedly mounted on the fixed plate 151 by screws. The guide rail 152 provides a certain path for the tensioning slider assembly 130, so that the slider can slide smoothly along this path. This design reduces friction and resistance during movement, and improves the movement efficiency and response speed of the first tensioning slider 131. During the movement of the tensioning slider assembly 130, the guide rail 152 can effectively prevent the slider from being offset due to external force or internal stress. This centering maintenance is necessary because it ensures the accuracy and consistency of the workpiece 200 during the processing process and avoids processing errors. The guide rail 152 not only guides the movement of the tensioning slide assembly 130, but also provides support for it, bearing the weight of the slide and its related components. This support ensures the stability and durability of the mechanical structure. In addition, the design of the guide rail 152 allows the tensioning slide assembly 130 to move safely at high speeds while maintaining precise positioning, which is crucial to improving the efficiency of the overall production cycle.

[0041] Please refer to Figure 2 , Figure 3 and Figure 4 In a possible implementation, two groups of tensioning slider assemblies 130 and clamping assemblies 140 are provided, and are respectively provided on opposite sides of the driving assembly 120, and the driving assembly 120 simultaneously drives the two groups of tensioning slider assemblies 130 and the two groups of clamping assemblies 140 to move in linkage. Exemplarily, linkage means that the driving assembly 120 drives the tensioning slider assemblies 130 on both sides to move in the second direction at the same time, and the tensioning slider assemblies 130 on both sides drive the clamping assemblies 140 on both sides to move in the third direction at the same time.

[0042] Please refer to Figure 2 , Figure 3 and Figure 4In a possible embodiment, the driving assembly 120 includes a driving member 121 and a pushing head 122, the pushing head 122 is connected to the driving member 121, and the first sliding portion 1211 is arranged on the pushing head 122. For example, in this embodiment, the cross section of the pushing head 122 is roughly trapezoidal, and the inclined surface of the pushing head 122 is used to convert the thrust of the driving member 121 in the vertical direction into the clamping force in the horizontal direction, and there is a sufficient gap between the upper end surface of the pushing head 122 and the guide assembly 150, so that the upward movement of the pushing head 122 will not be interfered. The driving member 121 is a cylinder, and the cylinder can drive the tensioning slider assembly 130 and the clamping assembly 140 at a higher speed and force, which helps to improve production efficiency. By adjusting the air pressure, the output force and movement speed of the cylinder can be conveniently controlled. This controllability makes the cylinder particularly useful in applications that require precise control of the clamping force. The cylinder has a simple structure, good durability, and low maintenance requirements. Since there is no complex mechanical transmission device, its failure rate is relatively low, which is suitable for long-term continuous operation. Compared to electric drive systems, pneumatic cylinders are less expensive and do not require complex electrical control systems.

[0043] Please refer to Figure 2 , Figure 3 and Figure 4 In a possible embodiment, the support body 110 includes a sliding groove 1131, and a sliding protrusion 1313 is formed on the tension slider assembly 130 and aligned with the sliding groove 1131. For example, in this embodiment, the sliding protrusion 1313 is formed on the first tension slider 131 and on the side away from the second tension slider 132. The sliding groove 1131 is rectangular, and the sliding protrusion 1313 is also rectangular. Through the cooperation between the sliding groove 1131 and the sliding protrusion 1313, the tension slider assembly 130 plays a guiding and limiting role in the movement process. The sliding groove 1131 provides a clear movement path for the tension slider assembly 130, ensuring that the slider can move smoothly along the preset direction. This guiding effect reduces friction and offset during the movement process, and improves the movement accuracy and stability of the slider. The design of the sliding groove 1131 allows the tension slider assembly 130 to always remain in a centered state during the movement process without offset. This is crucial to the machining accuracy of the workpiece 200, because any slight deviation may lead to inaccurate position of the workpiece 200, thereby affecting the machining quality.

[0044] Please refer to Figure 2 , Figure 3 and Figure 4In a possible implementation, the bracket body 110 includes a first pressing block 111, a second pressing block 112, a third pressing block 113, a mounting plate 114, a support block 115 and a bottom plate 116 connected in sequence, a sliding groove 1131 is formed on the third pressing block 113, and the driving assembly 120 is mounted on the mounting plate 114. Exemplarily, the sliding groove 1131 is formed on the side of the third pressing block 113 away from the second pressing block 112, and the first pressing block 111, the second pressing block 112 and the third pressing block 113, the mounting plate 114, the support block 115 and the bottom plate 116 are all fixed by screws.

[0045] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A pneumatic clamp, characterized in that: include: The support body; A driving assembly connected to the support body, wherein the driving assembly includes a first sliding portion; A tensioning slider assembly is slidably mounted on the bracket body, the tensioning slider assembly comprises a second sliding portion and a third sliding portion, the first sliding portion cooperates with the second sliding portion; A clamping assembly is slidably mounted on the bracket body, and the clamping assembly includes a fourth sliding portion that cooperates with the third sliding portion; The driving assembly moves along a first direction to drive the tensioning slider assembly to move along a second direction and drive the clamping assembly to move along a third direction, wherein the first direction is perpendicular to the second direction and the second direction is opposite to the third direction.

2. The pneumatic clamp according to claim 1, characterized in that: The first sliding portion is configured as a first sliding block, the second sliding portion is configured as a first sliding groove, the third sliding portion is configured as a second sliding block, and the fourth sliding portion is configured as a second sliding groove.

3. The pneumatic clamp according to claim 2, characterized in that: The first slide groove has a first inclined surface matched with the first sliding block; the second slide groove has a second inclined surface matched with the second sliding block.

4. The pneumatic clamp according to claim 2, characterized in that: The tensioning slider assembly includes a first tensioning slider and a second tensioning slider, the first tensioning slider is slidably installed on the bracket body, the second tensioning slider is fixedly installed on the first tensioning slider, the first slide groove is arranged on the first tensioning slider, and the second slider is arranged on the second tensioning slider.

5. The pneumatic clamp according to claim 1, characterized in that: The clamping assembly includes a clamping slider and a pressure head. The clamping slider is slidably mounted on the bracket body, the pressure head is fixedly mounted on the clamping slider, and the fourth sliding portion is arranged on the clamping slider.

6. The pneumatic clamp according to claim 5, characterized in that: The pneumatic clamp also includes a guide assembly, which includes a fixed plate and a guide rail. The fixed plate is installed on the bracket body, and the guide rail is fixedly installed on the fixed plate. A guide groove that cooperates with the guide rail is formed on the clamping slide.

7. The pneumatic clamp according to claim 1, characterized in that: The tensioning slider assembly and the clamping assembly are each provided with two groups, and are respectively arranged on opposite sides of the driving assembly. The driving assembly simultaneously drives the two groups of the tensioning slider assembly and the two groups of the clamping assembly to be linked.

8. The pneumatic clamp according to claim 1, characterized in that: The driving assembly includes a driving member and a pushing head, wherein the pushing head is connected to the driving member, and the first sliding portion is arranged on the pushing head.

9. The pneumatic clamp according to claim 1, characterized in that: The support body comprises a sliding groove, and a sliding protrusion which is aligned with the sliding groove is formed on the tensioning slider assembly.

10. The pneumatic clamp according to claim 9, characterized in that: The support body includes a first pressing block, a second pressing block, and a third pressing block, a mounting plate, a support block, and a bottom plate which are connected in sequence. The sliding groove is formed on the third pressing block, and the driving assembly is mounted on the mounting plate.

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