A fragile item clamping device

Abstract

The present invention discloses a fragile item clamping device, which includes a frame, a clamping assembly, and a lifting assembly installed on the frame. The lifting assembly is connected to the clamping assembly to drive the clamping assembly to move up and down. The clamping assembly includes a first clamping mechanism, a second clamping mechanism, and a driving motor. The clamping directions of the first clamping mechanism and the second clamping mechanism are perpendicular on the horizontal plane. The driving motor is respectively connected to the first clamping mechanism and the second clamping mechanism to simultaneously drive the first clamping mechanism and the second clamping mechanism to clamp the periphery of the item. In the present invention, the first clamping mechanism and the second clamping mechanism respectively clamp the item from the front and back and left and right sides of the item at the same time. The rotation of the output shaft of the driving motor simultaneously drives the two clamping mechanisms to clamp the periphery of the item. The clamping in two directions has a better clamping effect compared to single-direction clamping, and the force applied to the clamped object in each direction is smaller, preventing the clamped object from being broken due to excessive extrusion force.

Description

Technical Field

[0001] The present invention specifically relates to a clamping device for fragile items. Background Art

[0002] Currently, the clamping devices on the market usually use air cylinders to drive manipulators to clamp items. However, this clamping method is only applicable to hard items. When grasping items with poor anti-extrusion performance (such as biscuits), it is very easy to damage the items, causing unnecessary waste. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a clamping device for fragile items to solve at least one of the above problems.

[0004] To solve the above technical problem, the present invention adopts the following technical solution: A clamping device for fragile items includes a frame, a clamping assembly, and a lifting assembly installed on the frame. The lifting assembly is connected to the clamping assembly to drive the clamping assembly to lift. The clamping assembly includes a first clamping mechanism, a second clamping mechanism, and a driving motor. The clamping directions of the first clamping mechanism and the second clamping mechanism are perpendicular to each other on a horizontal plane. The driving motor is respectively connected to the first clamping mechanism and the second clamping mechanism to simultaneously drive the first clamping mechanism and the second clamping mechanism to clamp the periphery of an item.

[0005] In the above clamping device for fragile items, the first clamping mechanism includes a horizontally arranged rotating rod, connecting rods rotatably connected to both ends of the rotating rod, and first clamping plates respectively arranged on both sides of the rotating rod. The first clamping plates are slidably connected to the frame and rotatably connected to the connecting rods. The output shaft of the driving motor is connected to the middle of the rotating rod to drive the rotating rod to rotate, thereby driving the first clamping plates to approach or move away from the rotating rod in the horizontal direction.

[0006] In the above clamping device for fragile items, the first clamping plate includes a mounting bracket slidably connected to the frame and a plate body arranged on the mounting bracket. The plate body is fixed to the mounting bracket through a locking member.

[0007] In the above clamping device for fragile items, the second clamping mechanism includes a cam connected to the output shaft of the driving motor, a slide rail located below the cam, push blocks located on both sides of the cam, and second clamping plates connected to the ends of the push blocks. The push blocks are slidably connected to the slide rail. An elastic member that abuts against the frame is provided on the side of the push block away from the cam. The driving motor drives the cam to rotate, so that the push blocks sliding along the outer wall of the cam drive the second clamping plates to approach or move away from the cam simultaneously in the horizontal direction.

[0008] In the above clamping device for fragile items, push protrusions and reset grooves are symmetrically provided on the outer wall of the cam. When the push block abuts against the push protrusion, the second clamping plate opens. When the push block abuts against the reset groove, the second clamping plate closes.

[0009] In the above-mentioned fragile item clamping device, the rotating rod is located above the cam and is an integral structure with the cam.

[0010] In the above-mentioned fragile item clamping device, a linear driving mechanism with a vertically arranged output shaft is provided on the frame. A pushing member is connected to the bottom of the output shaft of the linear driving mechanism. The pushing member moves up and down with the output shaft of the linear driving mechanism to flatten the items dropped by the clamping assembly.

[0011] In the above-mentioned fragile item clamping device, the pushing member includes connecting plates vertically arranged on both sides of the clamping assembly and a pressing plate horizontally connected to the bottom ends of the connecting plates. Through holes for avoiding the first clamping mechanism or the second clamping mechanism are provided on the connecting plates.

[0012] The beneficial effects of the present invention are:

[0013] A fragile item clamping device includes a frame, a clamping assembly, and a lifting assembly installed on the frame. The lifting assembly is connected to the clamping assembly to drive the clamping assembly to move up and down. The clamping assembly includes a first clamping mechanism, a second clamping mechanism, and a driving motor. The clamping directions of the first clamping mechanism and the second clamping mechanism are perpendicular to each other on the horizontal plane. The driving motor is respectively connected to the first clamping mechanism and the second clamping mechanism to simultaneously drive the first clamping mechanism and the second clamping mechanism to clamp the periphery of the item. The technical solution has the following technical effects:

[0014] In the present invention, the first clamping mechanism and the second clamping mechanism clamp the item simultaneously from the front and rear and left and right sides of the item respectively. The output shaft of the driving motor is connected to the first clamping mechanism and the second clamping mechanism simultaneously to drive the first clamping mechanism and the second clamping mechanism to clamp the periphery of the item simultaneously. By rotating the output shaft of the driving motor, the two clamping mechanisms are driven to clamp the item simultaneously. The clamping effect in two directions is better than that in a single direction. The force applied to the clamped object in each direction is smaller, preventing the clamped object from being broken due to excessive squeezing force. At the same time, a single driving motor driving two clamping mechanisms can greatly reduce the space occupied by the driving structures of the first clamping mechanism and the second clamping mechanism, and reduce the overall volume of the clamping device.

[0015] The first clamping mechanism includes a horizontally arranged rotating rod, connecting rods rotatably connected to both ends of the rotating rod, and first clamping plates respectively arranged on both sides of the rotating rod. The first clamping plates are slidably connected to the frame and rotatably connected to the connecting rods. The output shaft of the driving motor is connected to the middle of the rotating rod to drive the rotating rod to rotate, thereby driving the first clamping plates to approach or move away from the rotating rod in the horizontal direction. The rotating rod drives the connecting rods at the ends to pull or push the first clamping plates, and the first clamping plates can be clamped or loosened over a long distance through a simple structure, and the operation is stable and reliable.

[0016] The first clamping plate includes a mounting bracket slidably connected to the frame and a plate body arranged on the mounting bracket. The plate body is fixed to the mounting bracket by a locking member. The mounting bracket can increase the strength of the plate body and avoid deformation of the plate body as much as possible. When the plate body is damaged, the detachably connected plate body and the mounting bracket can also facilitate disassembly and maintenance by maintenance personnel.

[0017] The second clamping mechanism includes a cam connected to the output shaft of the driving motor, a slide rail located below the cam, push blocks located on both sides of the cam, and a second clamping plate connected to the end of the push block. The push block is slidably connected to the slide rail. The side of the push block away from the cam is provided with an elastic member that abuts against the frame. The driving motor drives the cam to rotate so that the push block sliding along the outer wall of the cam drives the second clamping plate to approach or move away from the cam at the same time in the horizontal direction. The cam rotates to make the push block abut against different positions of the cam, so that the two plates can be clamped or loosened at a short distance. By cooperating with the first clamping mechanism, rectangular objects can be clamped, and the application range is wider.

[0018] The outer wall of the cam is symmetrically provided with a push protrusion and a reset groove. When the push block abuts against the push protrusion, the second clamping plate opens, and when the push block abuts against the reset groove, the second clamping plate closes. Because the cam is a symmetrical structure, as the output shaft of the drive motor rotates and drives the cam to rotate, the positioning protrusions on the two push blocks will abut against the push protrusion or the reset groove at the same time, so as to achieve synchronous and precise control of the moving distance of the two clamping plates.

[0019] The rotating rod is located above the cam and is an integral structure with the cam. During installation, it is only necessary to install the integrally arranged rotating rod and cam onto the drive motor, thereby simplifying the installation steps and improving assembly efficiency. At the same time, it is convenient for a single output shaft of the drive motor to simultaneously drive the first clamping mechanism and the second clamping mechanism.

[0020] A linear drive mechanism with a vertically arranged output shaft is provided on the frame. A pushing member is connected to the bottom of the output shaft of the linear drive mechanism. The pushing member rises and falls with the output shaft of the linear drive mechanism to flatten the items dropped from the clamping assembly. Multiple items that fall into the packaging box at the same time are flattened by the pushing member, thereby realizing the arrangement of the items in the packaging box, facilitating the subsequent sealing process, and improving the production and assembly efficiency.

[0021] The pushing member includes connecting plates vertically arranged on both sides of the clamping assembly and a pressure plate horizontally connected to the bottom end of the connecting plate. The connecting plate is provided with a through hole for avoiding the first clamping mechanism or the second clamping mechanism. The setting of the through hole ensures that the first clamping mechanism or the second clamping mechanism will not hinder the vertical lifting of the pushing member. At the same time, the pushing member will not affect the clamping of the first clamping mechanism or the second clamping mechanism, thereby ensuring independent operation of each other.

[0022] The features and advantages of the present invention will be disclosed in detail in the following specific embodiments and the accompanying drawings. Description of the Drawings

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0024] Figure 1 Is a perspective view of the clamping device when the clamping assembly is in the clamping state;

[0025] Figure 2 Is a perspective view of the clamping device when the clamping assembly is in the open state;

[0026] Figure 3 Is a partial schematic view of the clamping device;

[0027] Figure 4 Is a schematic view of the first clamping mechanism when the first clamping plate is open;

[0028] Figure 5 Is a schematic view of the second clamping mechanism when the second clamping plate is open;

[0029] Figure 6 Is a schematic view of the first clamping mechanism when the first clamping plate is clamped;

[0030] Figure 7 Is a schematic view of the second clamping mechanism when the second clamping plate is clamped.

[0031] Reference Numerals:

[0032] 100, frame;

[0033] 210, linear drive mechanism; 220, pusher; 221, connecting plate; 2211, through hole; 222, pressing plate;

[0034] 300, first clamping mechanism; 310, rotating rod; 320, connecting rod; 330, first clamping plate; 331, mounting bracket; 332, plate body;

[0035] 400, second clamping mechanism; 410, cam; 411, pushing protrusion; 412, reset groove; 420, slide rail; 430, push block; 431, positioning protrusion; 440, second clamping plate; 450, elastic member;

[0036] 500, drive motor. Specific Embodiments

[0037] The technical solutions of the embodiments of the present invention will be explained and described below in conjunction with the accompanying drawings of the embodiments of the present invention. However, the following embodiments are only the preferred embodiments of the present invention, not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more, unless otherwise clearly defined.

[0040] In the present invention, unless otherwise clearly specified and defined, the terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0042] Embodiment:

[0043] A fragile item clamping device, such as Figures 1 to 7As shown in the figure, it includes a frame 100, a clamping assembly, and a lifting assembly. The lifting assembly is a lifting cylinder fixedly installed on the frame 100. The output shaft at the bottom of the lifting cylinder is vertically arranged and connected to the clamping assembly to drive the clamping assembly to move up and down on the frame 100. The clamping assembly includes a first clamping mechanism 300, a second clamping mechanism 400, and a driving motor 500. Both the first clamping mechanism 300 and the second clamping mechanism 400 horizontally clamp an object, and the clamping directions of the first clamping mechanism 300 and the second clamping mechanism 400 are perpendicular to each other on the horizontal plane, that is, the first clamping mechanism 300 and the second clamping mechanism 400 clamp the object simultaneously from the front and back and left and right sides of the object respectively. The output shaft of the driving motor 500 is connected to both the first clamping mechanism 300 and the second clamping mechanism 400 simultaneously to drive the first clamping mechanism 300 and the second clamping mechanism 400 to clamp the peripheral side of the object simultaneously. By rotating the output shaft of the driving motor 500, the two clamping mechanisms clamp the peripheral side of the object simultaneously. The clamping effect in two directions is better than that in a single direction, and the force applied to the clamped object in each direction is smaller, preventing the clamped object from being broken due to excessive extrusion force.

[0044] In this embodiment, the first clamping mechanism 300 includes a rotating rod 310, two connecting rods 320, and two first clamping plates 330. The rotating rod 310 is horizontally arranged. The center of the rotating rod 310 is connected to the output shaft of the driving motor 500 and rotates with the output shaft of the driving motor 500. The two first clamping plates 330 are slidably connected to the frame 100 and are respectively located on the left and right sides of the rotating rod 310. The two connecting rods 320 are respectively rotatably connected to the two ends of the rotating rod 310 and can rotate in the horizontal direction. One end of the connecting rod 320 is connected to the rotating rod 310, and the other end is rotatably connected to the first clamping plate 330. When the output shaft of the driving motor 500 rotates, the rotating rod 310 rotates together with the driving motor 500. During the rotation of the rotating rod 310, as Figure 4 and Figure 6 shown, the two ends of the rotating rod 310 approach or move away from the first clamping plates 330 on both sides, and then the two first clamping plates 330 are pulled closer to clamp the object or move away from the object through the connecting rods 320 connected to the two ends of the rotating rod 310. Preferably, the first clamping plate 330 in this embodiment includes a mounting bracket 331 and a plate body 332. The mounting bracket 331 is slidably connected to the frame 100, and the plate body 332 is arranged on the mounting bracket 331. The plate body 332 and the mounting bracket 331 are locked and fixed by locking parts such as screws.

[0045] In this embodiment, the second clamping mechanism 400 includes a cam 410, a slide rail 420, two push blocks 430, and two second clamping plates 440. The middle of the cam 410 is connected to the output shaft of the driving motor 500 and rotates with the output shaft of the driving motor 500. The slide rail 420 is horizontally fixed on the frame 100. The slide rail 420 is located below the cam 410 and penetrates through the push blocks 430, so that the two push blocks 430 are slidably connected to the slide rail 420. The two push blocks 430 are respectively located on both sides of the cam 410, and the side walls of the cam 410 are respectively abutted against the positioning protrusions 431 on the two push blocks 430. The two second clamping plates 440 are respectively fixed on the sides of the push blocks 430 away from the cam 410. An elastic member 450 abutted against the frame 100 is further provided on the side of the push block 430 away from the cam 410. The elastic member 450 is sleeved on the slide rail 420. The cam 410 is a symmetric structure, including two outwardly protruding pushing protrusions 411 and two inwardly recessed reset grooves 412. When the first clamping mechanism 300 works, the output shaft of the driving motor 500 rotates and drives the cam 410 to rotate. Because the cam 410 is a symmetric structure, as the cam 410 rotates, the positioning protrusions 431 on the two push blocks 430 will simultaneously abut against the pushing protrusions 411 or the reset grooves 412. As Figure 5 shown, when the positioning protrusion 431 moves from abutting against the reset groove 412 to abutting against the pushing protrusion 411, the pushing protrusion 411 pushes the positioning protrusion 431 in a direction away from the cam 410 and compresses the elastic member 450, so that the two push blocks 430 respectively push the two second clamping plates 440 away to separate from the article; as Figure 7 shown, when the positioning protrusion 431 moves from abutting against the pushing protrusion 411 to abutting against the reset groove 412, the two elastic members 450 push the push blocks 430 to approach under the action of the elastic force, so as to drive the two second clamping plates 440 to approach and clamp the article. In order to further limit the push block 430 and prevent the push block 430 from flipping on the slide rail 420, the push block 430 in this embodiment is preferably penetrated through the frame 100 to be slidably connected to the frame 100.

[0046] In order to facilitate the single output shaft of the driving motor 500 to drive the first clamping mechanism 300 and the second clamping mechanism 400 at the same time, the rotating rod 310 and the cam 410 in this embodiment are of an integral structure. The rotating rod 310 is located above the cam 410, and the driving motor 500 is located above the rotating rod 310. The output shaft of the driving motor 500 vertically penetrates through the rotating rod 310 and the cam 410. During installation, only the integrally provided rotating rod 310 and the cam 410 need to be installed on the driving motor 500, which simplifies the installation steps and improves the assembly efficiency.

[0047] In this embodiment, a linear driving mechanism 210 and a pushing member 220 are further provided on the frame 100. The linear driving mechanism 210 is preferably a cylinder. The output shaft of the linear driving mechanism 210 is arranged vertically. The pushing member 220 is connected to the bottom of the output shaft of the linear driving mechanism 210. The output shaft of the linear driving mechanism 210 drives the pushing member 220 to move up and down through telescoping. After the clamping assembly clamps an article from the production line above the packing box, the clamping assembly is released, and the clamped object falls into the packing box. Then, the pushing member 220 moves downward under the push of the linear driving mechanism 210, as Figure 2 shown, so as to flatten a plurality of articles that fall into the packing box simultaneously, for subsequent sealing of the box. Preferably, the pushing member 220 includes connecting plates 221 vertically arranged on both sides of the clamping assembly and a pressing plate 222 horizontally connected to the bottom ends of the connecting plates 221. The pressing plate 222 is formed by bending inward from the bottom of the connecting plates 221. The output shaft of the linear driving mechanism 210 is connected to the top of the connecting plates 221. Through holes 2211 for avoiding the first clamping mechanism 300 or the second clamping mechanism 400 are provided on the connecting plates 221, so that the first clamping mechanism 300 or the second clamping mechanism 400 will not block the vertical lifting of the pushing member 220.

[0048] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A fragile item clamping device, characterized in that: It includes a frame, a clamping assembly, and a lifting assembly mounted on the frame. The lifting assembly is connected to the clamping assembly to drive the clamping assembly to lift. The clamping assembly includes a first clamping mechanism, a second clamping mechanism, and a driving motor. The clamping directions of the first clamping mechanism and the second clamping mechanism are perpendicular to each other on the horizontal plane. The driving motor is respectively connected to the first clamping mechanism and the second clamping mechanism to simultaneously drive the first clamping mechanism and the second clamping mechanism to clamp the peripheral side of an object. The first clamping mechanism includes a horizontally arranged rotating rod, connecting rods rotatably connected to both ends of the rotating rod, and first clamping plates respectively arranged on both sides of the rotating rod. The first clamping plates are slidably connected to the frame and rotatably connected to the connecting rods. The output shaft of the driving motor is connected to the middle of the rotating rod to drive the first clamping plates to approach or move away from the rotating rod in the horizontal direction by driving the rotating rod to rotate. The first clamping plate includes a mounting bracket slidably connected to the frame and a plate body arranged on the mounting bracket. The plate body is fixed on the mounting bracket by a locking member. The second clamping mechanism includes a cam connected to the output shaft of the driving motor, a slide rail located below the cam, push blocks located on both sides of the cam, and second clamping plates connected to the ends of the push blocks. The push blocks are slidably connected to the slide rail. An elastic member that abuts against the frame is arranged on the side of the push block away from the cam. The driving motor drives the cam to rotate, so that the push blocks sliding along the outer wall of the cam drive the second clamping plates to approach or move away from the cam in the horizontal direction at the same time.

2. The fragile item clamping device according to claim 1, wherein: Push protrusions and reset grooves are symmetrically arranged on the outer wall of the cam. When the push block abuts against the push protrusion, the second clamping plate opens. When the push block abuts against the reset groove, the second clamping plate closes.

3. The fragile item clamping device according to claim 1, characterized in that: The rotating rod is located above the cam and is an integral structure with the cam.

4. A fragile item clamping device according to claim 1, wherein: A linear driving mechanism with a vertically arranged output shaft is arranged on the frame. The bottom of the output shaft of the linear driving mechanism is connected with a pushing member. The pushing member rises and falls with the output shaft of the linear driving mechanism to flatten the object dropped by the clamping assembly.

5. The fragile item clamping device according to claim 4, characterized in that: The pushing member includes connecting plates vertically arranged on both sides of the clamping assembly and a pressing plate horizontally connected to the bottom ends of the connecting plates. Through holes for avoiding the first clamping mechanism or the second clamping mechanism are arranged on the connecting plates.

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