Multifunctional clamp

Abstract

The utility model discloses a multifunctional clamp which comprises a supporting frame, a first clamping device arranged on the supporting frame and a second clamping device arranged on the first clamping device. The first clamping device comprises two clamping plates which are arranged at intervals in the left-right direction, and at least one of the two clamping plates can be arranged on the supporting frame in a sliding mode in the left-right direction; the second clamping device comprises suction cup assemblies, the suction cup assemblies are arranged on the two clamping plates correspondingly, and each suction cup assembly can slide up and down on the corresponding clamping plate. According to the multifunctional clamp, materials such as a box body can be clamped through the two clamping plates, materials such as a base plate can be sucked through the suction cup assembly, and the clamping plates and the suction cup assembly are matched to clamp materials such as a vacuum bag, so that the functions of the clamp are diversified; the stacking condition that a single station corresponds to various materials can be met under the condition that a clamp does not need to be replaced, production line corollary equipment can be simplified, production line function integration is achieved, the production line manufacturing cost is reduced, and the production capacity of a production line is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a multifunctional clamp. Background Art

[0002] Clamps are generally used in conjunction with six-axis manipulators to grab materials such as boxes and stack them horizontally or vertically for palletizing. In existing technologies, most palletizing clamps have a single function and are unable to cope with the palletizing of various types of materials. This requires the production line to have different types of clamps at multiple workstations, each clamping the corresponding materials at different workstations, resulting in a large number of devices and scattered functions. Alternatively, when clamping materials at the same workstation, the clamp must also be replaced when the product changes, resulting in low utilization of individual clamps. Furthermore, replacing the clamps wastes a lot of manpower and material resources. Utility Model Content

[0003] The purpose of the utility model is to provide a multifunctional clamp capable of clamping materials in various forms in view of the deficiencies in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A multifunctional clamp comprises a support frame, a first clamping device arranged on the support frame, and a second clamping device arranged on the first clamping device;

[0006] The first clamping device includes two clamping plates spaced apart in the left-right direction, at least one of the two clamping plates being slidably disposed on the support frame in the left-right direction;

[0007] The second clamping device includes a suction cup assembly, which is respectively arranged on the two clamping plates, and each of the suction cup assemblies is slidably arranged on the clamping plates.

[0008] In some embodiments, the clamp also includes a locking mechanism for locking the relative position of the suction cup assembly and the clamp, the locking mechanism includes a first rack fixedly arranged on the clamp and a second rack slidable on the suction cup assembly in the left and right or front and back directions, the first rack and the second rack both extend in the up and down directions, and the first rack and the second rack are disengageably engaged.

[0009] In some embodiments, the locking mechanism further includes a first driving mechanism for driving the second rack to slide in the left-right or front-back direction, the first driving mechanism is disposed on the suction cup assembly, and the second rack is connected to the first driving mechanism.

[0010] In some embodiments, the clamp also includes a guide mechanism for guiding the up and down sliding of the suction cup assembly, the guide mechanism includes a slide rail fixedly provided on the clamping plate and a slider fixedly provided on the suction cup assembly, the slider cooperates with the slide rail, and the slider can be slidably provided on the slide rail along the length extension direction of the slide rail.

[0011] In some embodiments, the suction cup assembly slides downward under the action of its own gravity, and the clamping plate is provided with a limiting structure for limiting the downward sliding of the suction cup assembly; when the suction cup assembly is at the lower limit position, the lower end surface of the suction cup assembly is located below the lower end surface of the clamping plate.

[0012] In some embodiments, the clamp also includes a lifting mechanism for driving the suction cup assembly to move upward, the lifting mechanism includes a bull's eye ball that can be slid up and down on the suction cup assembly and a second driving mechanism for driving the bull's eye ball to slide up and down, the second driving mechanism is arranged on the suction cup assembly, the bull's eye ball is connected to the bottom of the second driving mechanism, and the bull's eye ball is arranged on the inner side of the suction cup assembly.

[0013] In some embodiments, the suction cup assembly includes a base and a sponge suction cup disposed below the base.

[0014] In some embodiments, the two clamps are respectively a fixed clamp fixedly provided at one end of the support frame and a movable clamp slidably provided on the support frame in the left and right directions. The first clamping device also includes a third driving mechanism for driving the movable clamp to slide relative to the support frame. The third driving mechanism is provided on the support frame, and the movable clamp is connected to the third driving mechanism.

[0015] In some embodiments, the third driving mechanism includes a screw rod rotatably provided on the support frame, a nut seat screwed with the screw rod by a thread, and a motor for driving the screw rod to rotate, the movable splint is fixedly provided on the nut seat, and the motor is provided on the support frame;

[0016] The third driving mechanism further includes a transmission mechanism connected between the motor and the lead screw.

[0017] In some embodiments, the splint includes a plate body extending in the up and down directions and a hook portion arranged at the lower end of the plate body, the hook portion extends from the lower end of the plate body toward the inner side of the plate body, and the upper end surface of the hook portion extends obliquely from the outside to the inside and from the top to the bottom.

[0018] Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art: in the multifunctional clamp of the present invention, materials such as boxes can be clamped by two clamping plates, and materials such as pads can be sucked by the suction cup assembly. The clamping plates and the suction cup assembly can cooperate to clamp materials such as vacuum bags, which makes the clamp function diversified. Without changing the clamp, it can also meet the stacking conditions of multiple materials corresponding to a single workstation, streamline the production line supporting equipment, realize the integration of production line functions, reduce the production line manufacturing cost, and improve the production line production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attachment Figure 1 1 is a three-dimensional schematic diagram of the multifunctional clamp of this embodiment (Example 1);

[0020] Attachment Figure 2 This is a second perspective schematic diagram of the multifunctional clamp of this embodiment (Example 1);

[0021] Attachment Figure 3 This is the third three-dimensional schematic diagram of the multifunctional clamp of this embodiment (Example 1);

[0022] Attachment Figure 4 Schematic front view of the multifunctional clamp of this embodiment (Example 1);

[0023] Attachment Figure 5 1 is a three-dimensional schematic diagram of the multifunctional clamp of this embodiment (Example 2);

[0024] Attachment Figure 6 This is a second perspective schematic diagram of the multifunctional clamp of this embodiment (Example 2);

[0025] Attachment Figure 7 This is the third three-dimensional schematic diagram of the multifunctional clamp of this embodiment (Example 2);

[0026] Attachment Figure 8 Schematic front view of the multifunctional clamp of this embodiment (Example 2);

[0027] Attachment Figure 9 This is a three-dimensional schematic diagram of one of the multifunctional clamps of this embodiment (Example 3);

[0028] Attachment Figure 10 This is a second three-dimensional schematic diagram of the multifunctional clamp of this embodiment (Example 3);

[0029] Attachment Figure 11 This is the third three-dimensional schematic diagram of the multifunctional clamp of this embodiment (Example 3);

[0030] Attachment Figure 12 Schematic front view of the multifunctional clamp of this embodiment (Example 3);

[0031] Attachment Figure 13 This is a three-dimensional schematic diagram of the multifunctional clamp of this embodiment without the support frame and the first clamping device;

[0032] Attachment Figure 14 For attachment Figure 13 Schematic diagram of the front view in the state;

[0033] Attachment Figure 15 For attachment Figure 13 Schematic side view of the state.

[0034] Among them: 1. Support frame; 21. Fixed splint; 22. Movable splint; 2a. Plate body; 2b. Hook; 2c. Stopper; 31. Screw rod; 321. Base body; 322. Nut; 33. Motor; 34. Transmission mechanism; 4. Suction cup assembly; 41. Base; 42. Sponge suction cup; 51. Slide rail; 52. Slider; 61. First rack; 62. Second rack; 63. Translation cylinder; 64. Fixed block; 71. Bull's eye ball; 72. Lifting cylinder. DETAILED DESCRIPTION

[0035] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the directions or positional relationships shown in the accompanying drawings, such as Figure 4 In the drawings, the left side is referred to as "left," the right side is referred to as "right," the upper side is referred to as "up," and the lower side is referred to as "down." Directions perpendicular to the paper in the drawings are referred to as "front" and "back." This is intended solely to facilitate the description of the present invention and to simplify the description. It is not intended to indicate or imply that the device or apparatus referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] like Figures 1 to 12 As shown, the multifunctional clamp of the present invention includes a support frame 1, a first clamping device and a second clamping device.

[0038] The first clamping device is arranged on the support frame 1. Figures 1 to 12As shown, the first clamping device includes two clamping plates, which are spaced apart in the left-right direction on the support frame 1. At least one of the two clamping plates can be slidably arranged in the left-right direction on the support frame 1, so that the distance between the two clamping plates can be adjusted to clamp materials of different sizes.

[0039] Each clamping plate comprises a plate body 2a extending vertically and a hook portion 2b disposed at the lower end of the plate body 2a. The hook portion 2b extends inward from the lower end of the plate body 2a. When materials are clamped between the two clamping plates, the hook portion 2b supports the materials, reducing the risk of slippage and also reducing the clamping force exerted by the clamping plates on the materials to prevent damage. The term "inner" as used in this utility model refers to the side facing the space between the two clamping plates, while the term "outer" refers to the side facing away from the space between the two clamping plates, as opposed to the "inner" side.

[0040] The upper end surface of the hook portion 2b extends obliquely from outside to inside and from top to bottom, so that when the material is released, it is easy for the material to escape from the hook portion 2b.

[0041] In this embodiment, one of the two splints is fixedly provided at one end of the support frame 1 , and is defined as a fixed splint 21 . The other splint can be slidably provided on the support frame 1 in the left-right direction, and is defined as a movable splint 22 .

[0042] The first clamping device further includes a third driving mechanism, which is used to drive the movable clamping plate 22 to slide in the left and right directions relative to the support frame 1. The third driving mechanism is arranged on the support frame 1, and the movable clamping plate 22 is connected to the third driving mechanism.

[0043] Specifically, such as Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 9 and Figure 10 As shown, the third driving mechanism includes a screw rod 31, a nut seat and a motor 33. The screw rod 31 is rotatably arranged on the support frame 1 around its own axis, and the screw rod 31 extends in the left and right directions. The nut seat includes a seat body 321 and a nut 322 fixedly arranged in the seat body 321. The nut 322 is screwed with the screw rod 31 through a thread, and the movable splint 22 is fixedly arranged on the seat body 321. The motor 33 is arranged on the support frame 1, and the motor 33 is used to drive the screw rod 31 to rotate relative to the support frame 1. When the screw rod 31 rotates, the nut seat is driven to slide along the length extension direction of the screw rod 31, thereby driving the movable splint 22 to slide synchronously.

[0044] The screw rod 31 can be directly fixedly connected to the motor shaft of the motor 33, so that when the motor 33 is started, the motor shaft rotates and drives the screw rod 31 to rotate.

[0045] Alternatively, the third drive mechanism may further include a transmission mechanism 34 connected between the motor shaft of the motor 33 and the screw rod 31. When the motor 33 is started, the motor shaft rotates, driving the screw rod 31 to rotate through the transmission mechanism 4. The transmission mechanism 4 may be a belt transmission mechanism or the like.

[0046] The second clamping device is arranged on the first clamping device. Figures 1 to 15 As shown, the second clamping device includes a suction cup assembly 4, which is respectively arranged on two clamping plates, and each suction cup assembly 4 can slide in the vertical direction on the clamping plates. In this embodiment, each suction cup assembly 4 is arranged on the inner side of the clamping plates.

[0047] The suction cup assembly 4 includes a base 41 and a sponge suction cup 42. The base 41 is slidably arranged on the clamping plate, and the sponge suction cup 42 is fixedly arranged below the base 41.

[0048] The fixture also includes a guide mechanism for guiding the up and down sliding of the suction cup assembly 4. Figure 13 As shown, the guide mechanism includes a slide rail 51 fixedly mounted on the clamping plate and a slider 52 fixedly mounted on the suction cup assembly 4. The slider 52 cooperates with the slide rail 51 and is slidably mounted on the slide rail 51 along the longitudinal extension direction of the slide rail 51. When the slider 52 slides along the slide rail 51, it drives the suction cup assembly 4 to slide synchronously.

[0049] The clamp also includes a locking mechanism, which locks the relative position of the suction cup assembly 4 and the clamping plate. Figure 13 As shown, the locking mechanism includes a first rack 61 and a second rack 62. The first rack 61 is fixedly arranged on the clamping plate, and the first rack 61 extends in the up-down direction. The second rack 62 is slidably arranged on the suction cup assembly 4 in the left-right or front-back direction, and the second rack 62 also extends in the up-down direction. The first rack 61 and the second rack 62 are disengaged from each other. When the first rack 61 and the second rack 62 are in an engaged state, the position of the suction cup assembly 4 on the clamping plate is fixed. When the first rack 61 and the second rack 62 are disengaged, the suction cup assembly 4 can slide up and down on the clamping plate.

[0050] The first rack 61 and the second rack 62 are engaged or disengaged by sliding the second rack 62 in the left-right or front-back direction. Specifically, when the second rack 62 slides in the left-right or front-back direction toward the first rack 61, the first rack 61 and the second rack 62 are engaged. When the second rack 62 slides in the left-right or front-back direction away from the first rack 61, the first rack 61 and the second rack 62 are disengaged.

[0051] The locking mechanism also includes a first driving mechanism, which is used to drive the second rack 62 to slide in the left-right or front-back direction. The first driving mechanism is arranged on the suction cup assembly 4, and the second rack 62 is connected to the first driving mechanism.

[0052] In this embodiment, Figure 13 As shown, the first driving mechanism adopts a translation cylinder 63 , a fixing block 64 is fixedly provided on the piston rod of the translation cylinder 63 , and the second rack 62 is fixedly provided on the fixing block 64 .

[0053] In this embodiment, the suction cup assembly 4 slides downward under its own gravity, and a limiting structure is also provided on the clamping plate to limit the downward sliding of the suction cup assembly 4. In this embodiment, the limiting structure is a stopper 2c provided at the lower end of the clamping plate, and the lower end of the slide rail 51 is located above the stopper 2c, or is set against the stopper 2c. Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 9 and Figure 10 When the slider 52 slides downward along the slide rail 51 until it contacts the stopper 2c, the suction cup assembly 4 moves to the lower limit position and cannot move further downward.

[0054] When the suction cup assembly 4 is in the lower limit position, the lower end surface of the sponge suction cup 42 is located below the lower end surface of the clamping plate. Figures 5 to 8 shown.

[0055] The fixture also includes a lifting mechanism, which is used to drive the suction cup assembly 4 to slide upward. Figures 13 to 15 As shown, the lifting mechanism includes a bull's-eye ball bearing 71 and a second drive mechanism. The bull's-eye ball bearing 71 is mounted on the suction cup assembly 4 so that it can slide up and down. The second drive mechanism is used to drive the bull's-eye ball bearing 71 to slide up and down. The second drive mechanism is mounted on the suction cup assembly 4, and the bull's-eye ball bearing 71 is connected below the second drive mechanism. The bull's-eye ball bearing 71 is mounted inside the sponge suction cup 72. In this embodiment, the second drive mechanism uses a lifting cylinder 72.

[0056] The clamp has various functions and can clamp materials in various forms. Several specific embodiments are given below.

[0057] Example 1

[0058] In this embodiment, a clamp is used to clamp materials such as boxes. The working principle of the clamp is as follows:

[0059] Under the action of its own gravity, the suction cup assembly 4 makes the lower end surface of the sponge suction cup 42 fit with the upper surface of the box. The lifting cylinder 72 is activated, driving the bull's eye ball 71 to move downward and extend to fit with the upper surface of the box. When the bull's eye ball 71 moves downward to the point where it is about to extend out of the lower end surface of the sponge suction cup 42, the lifting cylinder 72 continues to drive the bull's eye ball 71 downward and extends. Under the reaction of the force, the suction cup assembly 4 is driven upward to separate the lower end surface of the sponge suction cup 42 from the upper surface of the box. The translation cylinder 63 is actuated to drive the second rack 62 to move toward the first rack 61 until it engages with the first rack 61, and the position of the suction cup assembly 4 is locked. The lifting cylinder 72 is actuated to drive the bull's eye ball 71 to move upward and retract away from the box. The motor 33 is started, and the screw rod 31 is driven to rotate through the transmission mechanism 34, driving the movable clamping plate 22 to move toward the fixed clamping plate 21, thereby clamping the box body and realizing the grabbing action of the box body material. Figures 1 to 4 shown.

[0060] Example 2

[0061] In this embodiment, a clamp is used to clamp materials such as pads. The working principle of the clamp is as follows:

[0062] The suction cup assembly 4 is at the lower limit position under the action of its own gravity. The translation cylinder 63 is actuated to drive the second rack 62 to move closer to the first rack 61 until it engages with the first rack 61, and the position of the suction cup assembly 4 is locked. The lifting cylinder 72 is actuated to drive the bull's eye ball 71 to move upward and retract, thereby creating a gap between it and the lower end surface of the sponge suction cup 42. The sponge suction cup 42 creates a vacuum to achieve the action of picking up and placing the pad, such as Figures 5 to 8 shown.

[0063] Example 3

[0064] In this embodiment, a clamp is used to clamp materials such as vacuum bags. The working principle of the clamp is as follows:

[0065] Under the action of its own gravity, the suction cup assembly 4 makes the lower end surface of the sponge suction cup 42 fit with the surface of the vacuum bag. The bull's eye ball 71 is driven to move downward and slightly extend out of the lower end surface of the sponge suction cup 42. The motor 33 is started, and the screw rod 31 is driven to rotate through the transmission mechanism 34, driving the movable splint 22 to move in the direction close to the fixed splint 21, thereby clamping the vacuum bag. When the movable splint 22 moves in the direction close to the fixed splint 21, it drives the components set on the movable splint 22 to move synchronously, and the bull's eye ball 71 rolls in contact with the surface of the vacuum bag, thereby smoothing the vacuum bag to avoid affecting the movement of the sponge suction cup 42. After the movable splint 22 moves into place, the lifting cylinder 72 is actuated to drive the bull's eye ball 71 to move upward and retract, so that there is a distance between it and the lower end surface of the sponge suction cup 42. The sponge suction cup 42 is attached to the surface of the vacuum bag to establish a vacuum, and the translation cylinder 63 is actuated to drive the second rack 62 to move toward the first rack 61 until it engages with the first rack 61. The position of the suction cup assembly 4 is locked, thereby achieving the action of sucking packaging materials such as vacuum bags. Figures 9 to 12 shown.

[0066] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A multifunctional clamp, characterized by: It comprises a support frame, a first clamping device arranged on the support frame, and a second clamping device arranged on the first clamping device; The first clamping device includes two clamping plates spaced apart in the left-right direction, at least one of the two clamping plates being slidably disposed on the support frame in the left-right direction; The second clamping device includes a suction cup assembly, which is respectively arranged on the two clamping plates, and each of the suction cup assemblies is slidably arranged on the clamping plates.

2. The multifunctional clamp according to claim 1, characterized in that: The clamp also includes a locking mechanism for locking the relative position of the suction cup assembly and the clamping plate, the locking mechanism includes a first rack fixedly arranged on the clamping plate and a second rack slidably arranged on the suction cup assembly in the left and right or front and back directions, the first rack and the second rack both extend in the up and down directions, and the first rack and the second rack are disengageably engaged.

3. The multifunctional clamp according to claim 2, characterized in that: The locking mechanism further includes a first driving mechanism for driving the second rack to slide in the left-right or front-back direction, the first driving mechanism is arranged on the suction cup assembly, and the second rack is connected to the first driving mechanism.

4. The multifunctional clamp according to claim 1, characterized in that: The clamp also includes a guide mechanism for guiding the up and down sliding of the suction cup assembly. The guide mechanism includes a slide rail fixedly provided on the clamping plate and a slider fixedly provided on the suction cup assembly. The slider cooperates with the slide rail, and the slider can be slidably provided on the slide rail along the length extension direction of the slide rail.

5. The multifunctional clamp according to claim 1, characterized in that: The suction cup assembly slides downward under the action of its own gravity, and a limiting structure is provided on the clamping plate for limiting the downward sliding of the suction cup assembly; when the suction cup assembly is at the lower limit position, the lower end surface of the suction cup assembly is located below the lower end surface of the clamping plate.

6. The multifunctional clamp according to claim 1, characterized in that: The clamp also includes a lifting mechanism for driving the suction cup assembly to move upward, the lifting mechanism includes a bull's eye ball that can be slid up and down on the suction cup assembly and a second driving mechanism for driving the bull's eye ball to slide up and down, the second driving mechanism is set on the suction cup assembly, the bull's eye ball is connected to the bottom of the second driving mechanism, and the bull's eye ball is set on the inner side of the suction cup assembly.

7. The multifunctional clamp according to claim 1, characterized in that: The suction cup assembly includes a base and a sponge suction cup arranged below the base.

8. The multifunctional clamp according to claim 1, characterized in that: The two clamps are respectively a fixed clamp fixedly arranged at one end of the support frame and a movable clamp slidably arranged on the support frame in the left and right directions. The first clamping device also includes a third driving mechanism for driving the movable clamp to slide relative to the support frame. The third driving mechanism is arranged on the support frame, and the movable clamp is connected to the third driving mechanism.

9. The multifunctional clamp according to claim 8, characterized in that: The third driving mechanism includes a screw rod rotatably arranged on the support frame, a nut seat screwed with the screw rod by a thread, and a motor for driving the screw rod to rotate, the movable splint is fixedly arranged on the nut seat, and the motor is arranged on the support frame; The third driving mechanism further includes a transmission mechanism connected between the motor and the lead screw.

10. The multifunctional clamp according to claim 1, characterized in that: The splint includes a plate body extending in the up-down direction and a hook portion arranged at the lower end of the plate body, the hook portion extends from the lower end of the plate body toward the inner side of the plate body, and the upper end surface of the hook portion extends obliquely from outside to inside and from top to bottom.

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