Clamping mechanism

Abstract

The present disclosure relates to a clamping mechanism, including a base frame, two clamping assemblies, and a driving assembly for driving the two clamping assemblies to move closer to or farther from each other, wherein the clamping assembly includes: a slider movably mounted on the base frame; an intermediate plate disposed at intervals on the side of the slider facing the other slider; a first elastic member elastically connected between the slider and the intermediate plate; a clamping block disposed at intervals on the side of the intermediate plate facing the other slider; and a second elastic member elastically connected between the intermediate plate and the clamping block. When a workpiece generates a reaction force on the clamping block, the reaction force will push the clamping block to move toward the intermediate plate and compress the second elastic member to play a buffering role; at the same time, the intermediate plate will also move together toward the direction of the slider to compress the first elastic member, so that the first elastic member also plays a buffering role. The first elastic member and the second elastic member can play a double buffering role on the clamping block to avoid a rigid collision between the clamping block and the workpiece.

Description

Technical Field

[0001] The present disclosure relates to the technical field of clamping mechanisms, and in particular, to a clamping mechanism. Background Art

[0002] The clamping mechanism plays an important role in automated production, and usually includes two clamping blocks and a driving component for driving the two clamping blocks to move closer to or away from each other, so that the workpiece can be clamped and transferred when the two clamping blocks move closer to each other. However, in the related art, during the use of the clamping mechanism, the two clamping blocks often move too close to each other or at too high a speed, resulting in rigid damage to the surface of the workpiece, such as bumping, extrusion deformation, etc. Utility Model Content

[0003] An object of the present disclosure is to provide a clamping mechanism to at least partially solve the problems existing in the related art.

[0004] In order to achieve the above-mentioned purpose, the present disclosure provides a clamping mechanism, including a base frame, two clamping assemblies movably mounted on the base frame, and a driving assembly for driving the two clamping assemblies to move closer to or away from each other, the clamping assembly including: a slider movably mounted on the base frame; an intermediate plate arranged at intervals on a side of the slider facing the other slider; a first elastic member elastically connected between the slider and the intermediate plate; a clamping block arranged at intervals on a side of the intermediate plate facing the other slider; and a second elastic member elastically connected between the intermediate plate and the clamping block.

[0005] Optionally, the clamping assembly also includes: two first connecting rods, each having one end hinged to the middle plate; and two second connecting rods, each having one end hinged to an end of the corresponding first connecting rod away from the middle plate, and ends of the two second connecting rods away from the first connecting rod are respectively hinged to the clamping block, wherein the two first connecting rods are symmetrically arranged on both sides of the second elastic member, and the two second connecting rods are symmetrically arranged on both sides of the second elastic member.

[0006] Optionally, the first elastic member is a first coil spring, one end of which is connected to the slider and the other end is connected to the middle plate; the second elastic member is a second coil spring, one end of which is connected to the middle plate and the other end is connected to the clamping block.

[0007] Optionally, the clamping assembly also includes a fixed block arranged on the side of the slider facing the other slider and a fixed rod installed on the side of the fixed block away from the slider and extending toward the middle plate, the first coil spring is sleeved on the fixed rod, and in the natural state of the first elastic member, the middle plate and the fixed rod are spaced apart from each other.

[0008] Optionally, a non-slip pad is provided on a side of the clamping block facing away from the middle plate.

[0009] Optionally, the clamping assembly also includes: two third connecting rods, each having one end hinged to the base frame; and two fourth connecting rods, each having one end hinged to the slider and the other end hinged to the end of the corresponding third connecting rod away from the base frame, wherein the corresponding two groups of the third connecting rods and the fourth connecting rods are symmetrically arranged on the left and right sides of the slider.

[0010] Optionally, a slideway extending along the length direction of the fourth connecting rod is formed on the fourth connecting rod, and the clamping assembly also includes: two fifth connecting rods, each of which is hinged to the slider at one end and is provided with a sliding shaft at the other end, and the sliding shaft passes through the corresponding slideway so as to be able to slide in the slideway along the length direction of the slideway, wherein the two fifth connecting rods are symmetrically arranged on the left and right sides of the slider.

[0011] Optionally, the two clamping assemblies are symmetrically mounted on the base frame.

[0012] Optionally, an installation cavity is provided inside the base frame, and the driving assembly is installed in the installation cavity. The installation surface of the base frame is provided with a sliding groove for the sliding of the slider, wherein one end of the slider extends into the installation cavity through the sliding groove and is connected to the driving assembly.

[0013] Optionally, the driving assembly includes: a driving motor; a transmission gear, which is transmission-connected to the output shaft of the driving motor; and two racks, which are slidably mounted in the mounting cavity and respectively meshed with two sides of the transmission gear, so that when the transmission gear rotates, the two racks move in opposite directions, wherein the two racks are respectively connected to a corresponding one of the sliders to drive the slider to move.

[0014] Optionally, a connecting plate is provided on a side of the base frame away from the slide groove, and a plurality of threaded holes are formed on the connecting plate.

[0015] Through the above technical solution, when the clamping mechanism clamps and transfers the workpiece, the driving component can drive the two clamping components to approach each other so that the two clamping blocks can clamp the workpiece from both sides. When the clamping block contacts the workpiece, the workpiece will generate a reaction force on the clamping block, and the reaction force will push the clamping block to move toward the middle plate and compress the second elastic member to play a buffering role; at the same time, the middle plate, the second elastic member and the clamping block will also move together toward the slider to compress the first elastic member, so that the first elastic member can also play a buffering role for the clamping block. By setting the first elastic member and the second elastic member, the clamping block can play a double buffering role, avoiding the rigid collision between the clamping block and the workpiece to cause damage to the workpiece.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 is a schematic diagram of a clamping mechanism exemplarily shown according to the present disclosure;

[0019] Figure 2 is a partial structural front view of a clamping assembly exemplarily shown according to the present disclosure;

[0020] Figure 3 is a schematic diagram of another clamping mechanism exemplarily shown according to the present disclosure;

[0021] Figure 4 is a front cross-sectional view of a clamping mechanism exemplarily shown according to the present disclosure;

[0022] Figure 5 Detailed description of the invention The figure is a top cross-sectional view of a clamping mechanism exemplarily shown in the present invention.

[0023] Description of Reference Numerals

[0024] 100-base frame; 101-installation cavity; 102-installation surface; 103-slide groove; 104-installation groove; 110-horizontal section; 120-vertical section; 200-drive assembly; 210-drive motor; 220-transmission gear; 230-rack; 300-clamping assembly; 310-slider; 320-middle plate; 330-first elastic member; 340-clamping block; 350-second elastic member; 361-first connecting rod; 362-second connecting rod; 370-fixing rod; 380-fixing block; 390-anti-slip pad; 400-connecting plate; 410-threaded hole; 510-third connecting rod; 520-fourth connecting rod; 521-slideway; 530-fifth connecting rod; 540-sliding shaft. DETAILED DESCRIPTION

[0025] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0026] In the present disclosure, unless otherwise stated, the directional terms "left" and "right" are used based on the orientation of the relevant components when used together. For example, the corresponding two sets of third connecting rods, fourth connecting rods and fifth connecting rods are symmetrically arranged on the "left and right" sides of the slider. The "left and right" sides here refer to the left and right sides of the movement direction of the slider, specifically corresponding to Figure 2 The direction perpendicular to the paper surface. The directional words "inside" and "outside" used are based on the structure of the relevant parts. For example, the drive component is installed in the installation cavity "inside" means that the drive component is installed in the internal accommodation space of the installation cavity.

[0027] In the present disclosure, the terms "first", "second", etc. are used to distinguish one element from another element, and do not have order and importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0028] Reference Figure 1-Figure 4 The present disclosure exemplarily shows a clamping mechanism, including a base frame 100, two clamping assemblies 300 movably mounted on the base frame 100, and a driving assembly 200 for driving the two clamping assemblies 300 to move closer to or away from each other, the clamping assembly 300 includes a slider 310 movably mounted on the base frame 100, an intermediate plate 320 arranged at intervals on the side of the slider 310 facing the other slider 310, a first elastic member 330 elastically connected between the slider 310 and the intermediate plate 320, a clamping block 340 arranged at intervals on the side of the intermediate plate 320 facing the other slider 310, and a second elastic member 350 elastically connected between the intermediate plate 320 and the clamping block 340.

[0029] The present disclosure does not limit how the slider 310 is movably mounted on the base 100. For example, in some embodiments, the base 100 may be provided with a slide groove 103, and the slider 310 may slide relative to the base 100 through the slide groove 103 under the action of the drive component 200, and the slider 310 is installed in the drive component 200 inside the base 100.

[0030] The present disclosure does not limit the drive assembly 200, which may include, for example, a drive motor, a transmission gear, and a rack mentioned below. In addition, in some other embodiments, it may also include a drive slider structure, a lead screw nut structure, etc., which will be specifically described below.

[0031] The present disclosure does not limit the first elastic member 330 and the second elastic member 350 , which may specifically be a coil spring, a rubber column, etc.

[0032] Through the above technical solution, when the clamping mechanism clamps and transfers the workpiece, the driving assembly 200 can drive the two clamping assemblies 300 to approach each other so that the two clamping blocks 340 can clamp the workpiece from both sides. When the clamping block 340 contacts the workpiece, the workpiece will generate a reaction force on the clamping block 340, which will push the clamping block 340 to move toward the middle plate 320 and compress the second elastic member 350 to play a buffering role; at the same time, the middle plate 320, the second elastic member 350 and the clamping block 340 will also move toward the slider 310 to compress the first elastic member 330, so that the first elastic member 330 can also play a buffering role on the clamping block 340. By setting the first elastic member 330 and the second elastic member 350, the clamping block 340 can play a double buffering role, avoiding the rigid collision between the clamping block 340 and the workpiece to cause damage to the workpiece.

[0033] Reference Figure 2In the embodiment of the present disclosure, the clamping assembly 300 may further include: two first connecting rods 361, one end of each of which is hinged to the middle plate 320; and two second connecting rods 362, one end of each of which is hinged to the end of the corresponding first connecting rod 361 away from the middle plate 320, and one end of each of the two second connecting rods 362 away from the first connecting rod 361 is hinged to the clamping block 340. The two first connecting rods 361 are symmetrically arranged on both sides of the second elastic member 350, and the two second connecting rods 362 are symmetrically arranged on both sides of the second elastic member 350. With such a design, when the clamping block 340 is subjected to the reaction force of the workpiece, the clamping block 340 can move toward the middle plate 320, and during this process, the first connecting rod 361 and the second connecting rod 362 rotate relative to each other to allow the clamping block 340 and the middle plate 320 to approach each other to compress the second elastic member 350. During the movement, the two sets of first connecting rods 361 and second connecting rods 362 on both sides of the second elastic member 350 can make the movement of the clamping block 340 more stable. In addition, in some other embodiments, the number of the first connecting rods 361 and the second connecting rods 362 can be four respectively, and they are evenly distributed around the second elastic member 350.

[0034] As described above, the present disclosure does not limit the first elastic member 330 and the second elastic member 350. Figure 1-Figure 3 In the illustrated embodiment, the first elastic member 330 may be a first coil spring, one end of which is connected to the slider 310 and the other end of which is connected to the middle plate 320; the second elastic member 350 may be a second coil spring, one end of which is connected to the middle plate 320 and the other end of which is connected to the clamping block 340. In addition, in some other embodiments, the first elastic member 330 and the second elastic member 350 may also be rubber columns or the like.

[0035] Further, refer to Figure 2 In the embodiment of the present disclosure, the clamping assembly 300 may further include a fixed block 380 disposed on the side of the slider 310 facing the other slider 310 and a fixed rod 370 installed on the side of the fixed block 380 away from the slider 310 and extending toward the middle plate 320. The first coil spring may be sleeved on the fixed rod 370, and in the natural state of the first elastic member 330, the middle plate 320 may be spaced apart from the fixed rod 370 to allow the middle plate 320 to compress the first coil spring to approach the slider 310. It should be explained that the "natural state" here refers to the state in which the first elastic member 330 is naturally extended and retracted without external force being applied. By providing the fixed block 380 and the fixed rod 370, the first coil spring can be guided and limited to prevent the first coil spring from swinging radially under force. The length of the fixed rod 370 can be adaptively designed according to actual conditions.

[0036] Reference Figure 1In the embodiment of the present disclosure, a non-slip pad 390 may be provided on one side of the clamping block 340 that is away from the middle plate 320. The non-slip pad 390 may increase the friction between the clamping block 340 and the workpiece, thereby improving the clamping force of the clamping mechanism.

[0037] The present disclosure does not limit the specific structure and material of the anti-skid pad 390 . For example, in an embodiment of the present disclosure, the anti-skid pad 390 may be made of rubber, which may be fixed to the clamping block 340 by bonding.

[0038] Reference Figure 3 In the embodiment of the present disclosure, the clamping assembly 300 may further include: two third connecting rods 510, each hinged at one end to the base frame 100; two fourth connecting rods 520, each hinged at one end to the slider 310, and the other end hinged to the end of the corresponding third connecting rod 510 away from the base frame 100, wherein the corresponding two sets of third connecting rods 510 and fourth connecting rods 520 may be symmetrically arranged on the left and right sides of the slider 310. With such a design, when the slider 310 moves, the two sets of third connecting rods 510 and fourth connecting rods 520 on both sides of the slider 310 may rotate relative to each other, so as to allow the slider 310 and the middle plate 320 to approach each other, so as to make the movement of the slider 310 more stable.

[0039] Further, the fourth connecting rod 520 may be formed with a slideway 521 extending along the length direction of the fourth connecting rod 520, and the clamping assembly 300 may further include two fifth connecting rods 530, each of which is hinged to the slider 310 at one end and provided with a sliding shaft 540 at the other end, and the sliding shaft 540 may penetrate the corresponding slideway 521 so as to be able to slide in the slideway 521 along the length direction of the slideway 521. Among them, the two fifth connecting rods 530 may be symmetrically arranged on the left and right sides of the slider 310. With such a design, when the slider 310 moves, the fifth connecting rod 530 may rotate around the slider 310, and the sliding shaft 540 may slide along the slideway 521, thereby further making the connection effect between the fourth connecting rod 520 and the slider 310 better, and the reciprocating motion of the slider 310 more stable.

[0040] Reference Figure 1 and Figure 3 In the embodiment of the present disclosure, the two clamping assemblies 300 can be symmetrically installed on the base frame 100, so that the installation space of the base frame 100 can be used more reasonably and the movable distance of the two clamping assemblies 300 can be increased.

[0041] Reference Figure 1In the embodiment of the present disclosure, a mounting cavity 101 may be provided inside the base frame 100, the driving assembly 200 may be installed in the mounting cavity 101, and a slide groove 103 may be provided on the mounting surface 102 of the base frame 100 for the slider 310 to slide. One end of the slider 310 may extend into the mounting cavity 101 through the slide groove 103 and be connected to the driving assembly 200. With such a design, the driving assembly 200 may drive the slider 310 to reciprocate along the slide groove 103 to achieve a clamping operation. The driving assembly 200 may be arranged in the internal mounting cavity 101 of the base frame 100 to reasonably utilize the space.

[0042] Further, refer to Figure 4 In the embodiment of the present disclosure, the driving assembly 200 may include: a driving motor 210; a transmission gear 220, which is transmission-connected to the output shaft of the driving motor 210; and two racks 230, which are slidably mounted in the mounting cavity 101 and respectively meshed with the two sides of the transmission gear 220, so that when the transmission gear 220 rotates, the two racks 230 can move in opposite directions. Among them, the two racks 230 can be respectively connected to a corresponding slider 310 (for example, welded) to drive the slider 310 to move. With such a design, when working, the driving motor 210 can drive the transmission gear 220 to rotate, and the two racks 230 meshed with the two sides of the transmission gear 220 can move in opposite directions, and because the two sliders 310 are respectively mounted on the corresponding racks 230, the two sliders 310 can be driven to move closer to or farther from each other when the two racks 230 move.

[0043] The present disclosure does not limit the structure of the base frame 100. Figure 4 In the illustrated embodiment, the base frame 100 can be constructed as a T-shaped structure including a horizontal section 110 and a vertical section 120, the mounting cavity 101 can be formed in the horizontal section 110 and the vertical section 120, the drive motor 210 can be installed in the portion of the mounting cavity 101 corresponding to the vertical section 120, the transmission gear 220 and the two racks 230 can be installed in the portion of the mounting cavity 101 corresponding to the horizontal section 110, and the output shaft of the drive motor 210 can extend to the portion of the mounting cavity 101 corresponding to the horizontal section 110 to be connected to the transmission gear 220.

[0044] Reference Figure 4 and Figure 5 The cross section of the base frame 100 can be constructed in an inverted T shape, that is, the cross section of the mounting cavity 101 can also be constructed in an inverted T shape. The two racks 230 can be respectively engaged with the upper and lower sides of the transmission gear 220, and the extension direction of the racks 230 is the left and right direction. It should be explained that the "up and down, left and right" mentioned here are based on Figure 5 The present disclosure does not limit how the rack 230 is installed, for example, Figure 5In the illustrated embodiment, the inner wall of the installation cavity 101 may be provided with installation grooves 104 for the rack 230 to slide, specifically, there may be four installation grooves 104, with two installation grooves 104 forming a group, for the rack 230 to extend into. In addition, in some other embodiments, the rack 230 may also be directly provided on the bottom wall of the installation cavity 101. Figure 5 In the up-down direction of the drawing, one side of the rack 230 may be in contact with the inner wall of the installation cavity 101 , and the other side may be meshed with the transmission gear 220 .

[0045] Reference Figure 1 In the embodiment of the present disclosure, a connecting plate 400 may be provided on the side of the vertical section 120 that is away from the horizontal section 110, and a plurality of threaded holes 410 may be provided on the connecting plate 400 for the clamping mechanism to be installed on other equipment. In the embodiment of the present disclosure, the connecting plate 400 may be integrally formed with the base frame 100. In addition, in some other embodiments, the connecting plate 400 may also be connected to the base frame 100 by welding.

[0046] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0047] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0048] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A clamping mechanism, characterized in that: The invention comprises a base frame, two clamping assemblies movably mounted on the base frame, and a driving assembly for driving the two clamping assemblies to move toward or away from each other, wherein the clamping assembly comprises: A slider movably mounted on the base frame; An intermediate plate is arranged at intervals on a side of the slider facing the other slider; A first elastic member, elastically connected between the slider and the middle plate; A clamping block is disposed at intervals on a side of the middle plate facing the other slider; and The second elastic member is elastically connected between the middle plate and the clamping block.

2. The clamping mechanism according to claim 1, characterized in that: The clamping assembly also includes: Two first connecting rods, each having one end hinged to the middle plate; and Two second connecting rods, one end of each of which is hinged to the end of the corresponding first connecting rod away from the middle plate, and one end of each of the two second connecting rods away from the first connecting rod is hinged to the clamping block. Wherein, the two first connecting rods are symmetrically arranged on both sides of the second elastic member, and the two second connecting rods are symmetrically arranged on both sides of the second elastic member.

3. The clamping mechanism according to claim 1, characterized in that: The first elastic member is a first coil spring, one end of which is connected to the slider and the other end is connected to the middle plate; the second elastic member is a second coil spring, one end of which is connected to the middle plate and the other end is connected to the clamping block.

4. The clamping mechanism according to claim 3, characterized in that: The clamping assembly also includes a fixed block arranged on the side of the slider facing the other slider and a fixed rod installed on the side of the fixed block away from the slider and extending toward the middle plate, the first coil spring is sleeved on the fixed rod, and in the natural state of the first elastic member, the middle plate and the fixed rod are spaced apart from each other.

5. The clamping mechanism according to claim 1, characterized in that: A non-slip pad is arranged on one side of the clamping block facing away from the middle plate.

6. The clamping mechanism according to claim 1, characterized in that: The clamping assembly also includes: Two third connecting rods, each having one end hinged to the base frame; and Two fourth connecting rods, one end of each of which is hinged to the slider, and the other end of each of which is hinged to the end of the corresponding third connecting rod away from the base frame. Wherein, the corresponding two groups of the third connecting rod and the fourth connecting rod are symmetrically arranged on the left and right sides of the sliding block.

7. The clamping mechanism according to claim 6, characterized in that: The fourth connecting rod is formed with a slideway extending along the length direction of the fourth connecting rod, and the clamping assembly further includes: Two fifth connecting rods are respectively hinged to the slider at one end and provided with a sliding shaft at the other end, and the sliding shaft passes through the corresponding slideway so as to be able to slide in the slideway along the length direction of the slideway. Wherein, the two fifth connecting rods are symmetrically arranged on the left and right sides of the sliding block.

8. The clamping mechanism according to any one of claims 1 to 7, characterized in that: The two clamping assemblies are symmetrically mounted on the base frame.

9. The clamping mechanism according to claim 1, characterized in that: The base frame is provided with an installation cavity inside, the driving assembly is installed in the installation cavity, and the installation surface of the base frame is provided with a sliding groove for the sliding block to slide. Wherein, one end of the sliding block extends into the installation cavity through the sliding groove and is connected to the driving component.

10. The clamping mechanism according to claim 9, characterized in that: The drive assembly comprises: Drive motor; A transmission gear, transmission-connected to the output shaft of the drive motor; and Two racks are slidably mounted in the mounting cavity and are respectively engaged with two sides of the transmission gear, so that when the transmission gear rotates, the two racks move in opposite directions. Wherein, the two racks are respectively connected to a corresponding one of the sliders to drive the slider to move.

11. The clamping mechanism according to claim 10, characterized in that: The base frame is constructed as a T-shaped structure including a horizontal section and a vertical section, the mounting cavity is formed in the horizontal section and the vertical section, the drive motor is installed in the portion of the mounting cavity corresponding to the vertical section, the transmission gear and the two racks are installed in the portion of the mounting cavity corresponding to the horizontal section, and the output shaft of the drive motor extends to the portion of the mounting cavity corresponding to the horizontal section to be connected to the transmission gear.

12. The clamping mechanism according to claim 11, characterized in that: A connecting plate is arranged on a side of the vertical section away from the horizontal section, and a plurality of threaded holes are formed on the connecting plate.

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