Scissor type variable-pitch clamping device

Abstract

A scissor type variable-pitch clamping device comprises a support, a clamp mechanism, a guide rod, a sliding block, a scissor type variable-pitch mechanism and a variable-pitch telescopic mechanism. The guide rod is arranged on the support, the multiple sliding blocks are sequentially arranged on the guide rod in a sleeving mode, the sliding block, located at one end of the guide rod, of the multiple sliding blocks is fixedly arranged relative to the guide rod, and the other sliding blocks can slide along the guide rod; the clamp mechanisms and the sliding blocks are fixedly connected in a one-to-one mode. Rotating shafts, located on the central axis of the telescopic direction, of the scissor type pitch changing mechanism are fixed to the sliding blocks in a one-to-one mode. One end of the variable-pitch telescopic mechanism is fixed to the fixedly-arranged sliding block, and the other end of the variable-pitch telescopic mechanism is connected with the sliding block at the other end of the guide rod. By means of the device, the clamping and pitch changing process of products transferred between the two conveyors can be simplified, the equipment failure rate is reduced, and the equipment occupied area is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of packaging equipment technology, and specifically relates to a scissor-type variable-pitch gripping device used when changing lines on a conveyor. Background Technology

[0002] In the packaging industry, products need to be placed on conveyors at specific lateral spacing. If the lateral spacing requirements differ between processes, the products must be conveyed at different spacings on different conveyors. This involves variable-pitch conveying, typically using the following methods: Figure 1 As shown, the lateral spacing of adjacent products 6 on the first conveyor 1 is X, and the lateral spacing of adjacent products 6 on the second conveyor 3 is Y. An independent pitch-changing mechanism 2 is provided between the first conveyor 1 and the second conveyor 3. The two conveyors are equipped with a first clamp 4 and a second clamp 5 that are adapted to the product spacing. The first clamp 4 clamps the product 6 on the first conveyor 1 and places it on the pitch-changing mechanism 2. The pitch-changing mechanism 2 changes the lateral spacing of adjacent products from X to Y. Then, the second clamp 5 clamps the product 6 after pitch change and places it on the second conveyor 3, thereby completing the pitch-changing conveying of the products.

[0003] The above method has the following drawbacks: It requires more supporting equipment, including a pitch-changing mechanism between the two conveyors and two clamps with different pitches. Furthermore, the pitch-changing mechanism's placement between the two conveyors increases the overall equipment footprint. The operation is cumbersome, requiring two clamping and placement steps, which impacts production efficiency. The two clamps also need to coordinate with the pitch-changing mechanism, further increasing control complexity. The increased equipment and control difficulty undoubtedly increase the equipment failure rate. Utility Model Content

[0004] This utility model provides a scissor-type variable-pitch gripping device, which can realize the variable pitch after gripping, thereby reducing equipment investment, simplifying the gripping and pitch-changing process of product transfer between two conveyors, reducing equipment failure rate, and reducing equipment footprint.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a scissor-type variable-pitch gripping device, comprising a bracket, a clamping mechanism, a guide rod, a slider, a scissor-type variable-pitch mechanism, and a variable-pitch telescopic mechanism; the guide rod is disposed on the bracket, and multiple sliders are disposed sequentially on the guide rod, wherein one slider located at one end of the guide rod is fixed relative to the guide rod, and the remaining sliders can slide along the guide rod; the clamping mechanism and the sliders are fixedly connected one-to-one; the rotating shafts of the scissor-type variable-pitch mechanism located on the central axis of the telescopic direction are fixed one-to-one on the sliders; one end of the variable-pitch telescopic mechanism is fixed to the fixedly disposed slider, and the other end is connected to the slider at the other end of the guide rod.

[0006] The support includes a top plate and end plates located at both ends of the top plate.

[0007] Two guide rods are provided, arranged in parallel and spaced apart, with each end of the guide rod fixedly connected to one of the two end plates.

[0008] The variable pitch telescopic mechanism is a cylinder, a hydraulic rod, or an electric push rod.

[0009] Two of the multiple sliders located at both ends are respectively connected to the fixed part and the telescopic part of the variable pitch telescopic mechanism, wherein the fixed part is connected to the slider that is fixedly installed.

[0010] The clamping mechanism includes a cylinder and a pair of grippers driven by the cylinder.

[0011] The beneficial effects achieved by this utility model are as follows: This device uses a linear telescopic mechanism such as a cylinder, hydraulic rod or electric push rod to control the scissor-type pitch-changing mechanism to realize the pitch change of the clamping mechanism. It is simple to operate, has high pitch-changing accuracy, and can also eliminate the need for a dedicated pitch-changing mechanism between two conveyor lines, reduce equipment failure rate, reduce equipment footprint, and reduce energy waste.

[0012] This device can be applied not only to the design and manufacturing of new equipment, but also to the transformation of old production lines, greatly shortening transportation time, significantly improving productivity, and greatly enhancing the automation level of the equipment, thus greatly improving the efficiency of enterprises. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of variable-pitch transfer of products on different conveyors in the existing technology;

[0015] Figure 2This is a schematic diagram of the scissor-type variable-distance gripping device of this utility model in use;

[0016] Figure 3 This is a schematic diagram of the scissor-type variable-distance gripping device of this utility model;

[0017] Figure 4 This is a front view of the scissor-type variable-pitch gripping device of this utility model.

[0018] Figure 5 This is a schematic diagram of the scissor-type variable-pitch clamping device of this utility model after the top plate has been removed;

[0019] In the diagram: 1. First conveyor, 2. Splitting mechanism, 3. Second conveyor, 4. First clamp, 5. Second clamp, 6. Product;

[0020] 7. Scissor-type variable pitch clamping device, 701. Top plate, 702. End plate, 703. Clamping mechanism, 704. Scissor-type variable pitch mechanism, 705. Variable pitch telescopic mechanism, 706. Guide rod, 707. Central rotating shaft, 708. Slider. Detailed Implementation

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0022] like Figure 2-5 As shown, a scissor-type variable-pitch gripping device includes a bracket, a clamping mechanism 703, a scissor-type variable-pitch mechanism 704, a variable-pitch telescopic mechanism 705, a guide rod 706, and a slider 708.

[0023] The support includes a top plate 701 and two end plates 702 located at both ends of the top plate 701. The end plates 702 and the top plate 701 are detachably connected by screws. A robot connector is provided on the top plate 701 for connecting to the robot's robotic arm. Two parallel guide rods 706 are provided between the two end plates 702. Multiple sliders 708 are provided on the guide rods 706. One slider 708 is a fixed slider fixed to the inside of the end plate 702 and cannot slide on the guide rod 706, while the other sliders 708 can slide along the guide rods 706.

[0024] An installation space is provided between the slider 708 and the top plate 701 for mounting the scissor-type pitch-changing mechanism 704. The scissor-type pitch-changing mechanism 705 is a multi-link mechanism composed of multiple connecting rods that are rotatably linked together. The multi-link mechanism forms a parallelogram, thus enabling extension and retraction under external force. Among the rotating shafts of the scissor-type pitch-changing mechanism 704, the shaft located on the central axis in the extension and retraction direction is the central rotating shaft 707. The central rotating shaft 707 includes a rotating shaft in the middle of the connecting rod and two rotating shafts at both ends in the extension and retraction direction. Multiple central rotating shafts 707 are connected one-to-one with multiple sliders 708, thereby driving the other sliders 708 (excluding the fixed slider) to slide along the guide rod 706 during the extension and retraction of the scissor-type pitch-changing mechanism 704.

[0025] Each slider 708 has a clamping mechanism 703 connected to the side opposite to the scissor-type pitch-changing mechanism 704. The clamping mechanism 703 is a cylinder-driven gripper used to grip products on the conveyor line.

[0026] The variable pitch telescopic mechanism 705 is a mechanism capable of linear telescopic extension or retraction, such as a hydraulic rod, cylinder, or electric push rod. The fixed end of the variable pitch telescopic mechanism 705 is fixed to the fixed slider or to the end plate 702 connected to the fixed slider, and the telescopic end of the variable pitch telescopic mechanism 705 is connected to another slider away from the fixed slider.

[0027] As the variable pitch telescopic mechanism 705 extends and retracts, it drives the scissor-type variable pitch mechanism 704 to extend and retract, thereby adjusting the distance between adjacent sliders 708, i.e. the spacing of the clamping mechanism 703, so that it adapts to the product spacing on the conveyor line.

[0028] This embodiment employs four clamping mechanisms, thus providing four sliders: one fixed slider and three slidable sliders. The pitch-changing telescopic mechanism uses a cylinder; the cylinder body is connected to the fixed slider, and the cylinder rod is connected to the outermost slidable slider. The scissor-type pitch-changing mechanism consists of four parallelograms formed by connecting rods, thus having four central pivots.

[0029] In other embodiments, the number of clamping mechanisms and sliders can be selected according to actual conditions, thereby determining the structure of the scissor-type variable pitch mechanism.

[0030] This device can automatically adjust the spacing between adjacent clamping mechanisms within its allowable adjustment range to adapt to the product spacing on different conveyor lines, thus eliminating the need for intermediate pitch-changing mechanisms compared to existing technologies.

[0031] It should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The terminology used in the description of this application is only for describing specific embodiments and is not intended to limit the exemplary embodiments according to this application.

Claims

1. A scissor-type variable-distance gripping device, characterized in that, The system includes a bracket, a clamping mechanism, a guide rod, a slider, a scissor-type pitch-changing mechanism, and a pitch-changing telescopic mechanism. The guide rod is mounted on the bracket, and multiple sliders are sequentially mounted on the guide rod. Among the multiple sliders, the slider located at one end of the guide rod is fixed relative to the guide rod, while the remaining sliders can slide along the guide rod. The clamping mechanism is fixedly connected to each slider in a one-to-one manner. The rotating shaft of the scissor-type pitch-changing mechanism, located on the central axis of the telescopic direction, is fixedly attached to each slider in a one-to-one manner. One end of the pitch-changing telescopic mechanism is fixed to the fixed slider, and the other end is connected to the slider at the other end of the guide rod.

2. The scissor-type variable-pitch gripping device according to claim 1, characterized in that, The support includes a top plate and end plates located at both ends of the top plate.

3. The scissor-type variable-pitch gripping device according to claim 2, characterized in that, Two guide rods are provided, arranged in parallel and spaced apart, with each end of the guide rod fixedly connected to one of the two end plates.

4. The scissor-type variable-pitch gripping device according to claim 1, characterized in that, The variable pitch telescopic mechanism is a cylinder, a hydraulic rod, or an electric push rod.

5. The scissor-type variable-pitch gripping device according to claim 1, characterized in that, Two of the multiple sliders located at both ends are respectively connected to the fixed part and the telescopic part of the variable pitch telescopic mechanism, wherein the fixed part is connected to the slider that is fixedly installed.

6. The scissor-type variable-pitch gripping device according to claim 1, characterized in that, The clamping mechanism includes a cylinder and a pair of grippers driven by the cylinder.

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