A clamping device

Abstract

The utility model discloses a clamping device, including fixed base plate and clamping piece: the linear groove body and arc groove body are seted up on the fixed base plate, the clamping piece includes the clamping plate, drive shaft, connecting rod, main guide shaft and vice guide shaft, the drive shaft with linear groove body sliding fit, main guide shaft and vice guide shaft all with clamping plate swing joint, and are sliding fit with corresponding arc groove body respectively. The utility model discloses a kind of clamping device to overcome the defect of the present, when drive shaft linear motion, two guide shafts are moved in different angle, different radius arc groove by connecting rod, this forces clamping plate to simultaneously produce composite motion in radial and circumferential, and arc groove trajectory can ensure that two clamping plates always move symmetrically, to automatically find and adapt the center of material, improve the precision and stability of clamping.

Description

Technical Field

[0001] This utility model relates to a clamping device. Background Technology

[0002] In automated production, it is desirable for the clamping mechanism to have the largest possible opening when open to accommodate workpieces of varying sizes or with slight positional deviations; however, when clamping, it is also desirable for the jaws to tightly and stably enclose the workpiece. However, traditional linear grippers have a limited opening range; while simple rotary grippers may not have an ideal tip trajectory when open, making it impossible to simultaneously meet both spatial requirements.

[0003] Therefore, a clamping device is proposed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the existing defects and provide a clamping device that can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamping device, comprising a fixed base plate and a clamping member: The fixed base plate has straight grooves and arc grooves. The clamping component includes a clamping plate, a drive shaft, a connecting rod, a main guide shaft, and a secondary guide shaft; The drive shaft is slidably engaged with the linear groove. Both the main guide shaft and the secondary guide shaft are rotatably connected to the clamping plate and are slidably engaged with the corresponding arc-shaped grooves. One end of the connecting rod is rotatably connected to the drive shaft, and the other end is rotatably connected to the clamping plate.

[0006] Preferably, there are two clamping plates, and the two clamping plates are symmetrically arranged with respect to the sliding axis of the drive shaft.

[0007] Preferably, the arc-shaped groove includes a first arc-shaped groove for guiding the main guide shaft and a second arc-shaped groove for guiding the secondary guide shaft; The bending angle of the second arc-shaped groove is greater than that of the first arc-shaped groove, and the second arc-shaped groove is located inside the first arc-shaped groove.

[0008] Preferably, when the drive shaft slides along the straight groove away from the clamping plate, it drives the clamping plate to retract and open through linkage.

[0009] Preferably, when the drive shaft slides along the straight groove toward the clamping plate, it drives the clamping plate to extend and close via a linkage.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: When the drive shaft moves linearly, the two guide shafts move in arc grooves with different angles and radii through the connecting rod; this forces the clamping plates to generate compound movements in the radial and circumferential directions at the same time, and the arc groove trajectory can ensure that the two clamping plates always move symmetrically, thereby automatically finding and adapting to the center of the material, improving the clamping accuracy and stability. Attached Figure Description

[0011] 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: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the clamping component structure of this utility model; Figure 3 This is a schematic diagram of the fixed substrate structure of this utility model.

[0012] In the figure: 1. Fixed base plate; 2. Clamping component; 21. Clamping plate; 22. Main guide shaft; 23. Secondary guide shaft; 24. Connecting rod; 25. Drive shaft. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] like Figures 1 to 3 As shown, a clamping device includes a fixed base plate 1 and a clamping member 2: the fixed base plate 1 has a straight groove and an arc groove.

[0015] The clamping component 2 includes a clamping plate 21, a drive shaft 25, a connecting rod 24, a main guide shaft 22, and a secondary guide shaft 23.

[0016] The drive shaft 25 slides in conjunction with the linear groove, and the entire device only requires a single linear drive source, such as a cylinder, to push the drive shaft 25 to slide in the linear groove. The linear groove ensures pure linear motion of the input and transmits this motion to the entire mechanism through the connecting rod 24. This single-input drive complex output design greatly reduces the cost and complexity of the external drive system.

[0017] Both the main guide shaft 22 and the secondary guide shaft 23 are rotatably connected to the clamping plate 21 and slide in cooperation with the corresponding arc-shaped grooves. The main guide shaft 22 and the secondary guide shaft 23 work together to achieve dual-axis guidance, which can effectively prevent the clamping plate 21 from shaking or getting stuck during movement and ensure smooth movement.

[0018] One end of the connecting rod 24 is rotatably connected to the drive shaft 25, and the other end is rotatably connected to the clamping plate 21. When the drive shaft 25 slides away from the clamping plate 21 along the straight groove, the clamping plate 21 is driven to retract and open through the linkage of the connecting rod 24. When the drive shaft 25 slides closer to the clamping plate 21 along the straight groove, the clamping plate 21 is driven to extend and close through the linkage of the connecting rod 24.

[0019] There are two clamping plates 21, and the two clamping plates 21 are symmetrically arranged with respect to the sliding axis of the drive shaft 25.

[0020] The arc-shaped groove includes a first arc-shaped groove for guiding the main guide shaft 22 and a second arc-shaped groove for guiding the secondary guide shaft 23. The bending angle of the second arc-shaped groove is greater than that of the first arc-shaped groove, and the second arc-shaped groove is located inside the first arc-shaped groove. The larger bending angle of the second arc-shaped groove means that when the drive shaft 25 moves the same straight-line distance, the secondary guide shaft 23 is forced to produce a larger angular displacement, which directly results in a larger opening or closing amplitude of the clamping plate 21 when it retracts or extends. Therefore, simultaneous guidance by arc-shaped grooves at different angles can be achieved. When clamping: the two clamping plates 21 simultaneously perform the two actions of "extending forward" and "retracting inward", which can actively envelop the material and form a stable multi-point contact, which is more reliable than simple linear clamping or rotary clamping.

[0021] When released: the two clamps 21 simultaneously perform the actions of "retracting backward" and "opening outward", providing a huge operating space for material handling and effectively avoiding interference.

[0022] This clamping device has straight grooves and arc-shaped grooves respectively formed on a fixed base plate 1. The straight grooves are used to guide the drive shaft 25, while the arc-shaped grooves are used to guide and limit the main guide shaft 22 and the secondary guide shaft 23. Both the main guide shaft 22 and the secondary guide shaft 23 are rotatably connected to the clamping plate 21 of the clamping member 2, and both ends of the connecting rod 24 are rotatably connected to the drive shaft 25 and the clamping plate 21 respectively. (See reference...) Figure 1 and Figure 3Because the arc-shaped groove used for guiding and limiting the secondary guide shaft 23 is located on the inner side and has a larger angle, when the drive shaft 25 slides along the straight groove of the fixed base plate 1 in a direction away from the clamping plate 21, the secondary guide shaft 23 slides synchronously with the main guide shaft 22 under the linkage of the connecting rod 24. As the secondary guide shaft 23 slides along the large-angle arc-shaped groove, the opening between the tips of the two clamping plates 21 increases synchronously while the two clamping plates 21 retract. When the drive shaft 25 is pushed in a direction close to the clamping plate 21, the two clamping plates 21 extend outward, and the opening between their tips narrows. By utilizing this motion characteristic, the clamping action can be realized to meet the clamping requirements of actual materials.

[0023] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A clamping device, characterized in that, Includes a fixed base plate (1) and a clamping member (2): The fixed base plate (1) has a straight groove and an arc groove. The clamping member (2) includes a clamping plate (21), a drive shaft (25), a connecting rod (24), a main guide shaft (22), and a secondary guide shaft (23). The drive shaft (25) is slidably engaged with the linear groove. The main guide shaft (22) and the secondary guide shaft (23) are rotatably connected to the clamping plate (21) and are respectively slidably engaged with the corresponding arc-shaped groove. One end of the connecting rod (24) is rotatably connected to the drive shaft (25), and the other end is rotatably connected to the clamping plate (21).

2. The clamping device according to claim 1, characterized in that, The number of clamps (21) is two, and the two clamps (21) are symmetrically arranged with respect to the sliding axis of the drive shaft (25).

3. The clamping device according to claim 1, characterized in that, The arc-shaped groove includes a first arc-shaped groove for guiding the main guide shaft (22) and a second arc-shaped groove for guiding the secondary guide shaft (23); The bending angle of the second arc-shaped groove is greater than that of the first arc-shaped groove, and the second arc-shaped groove is located inside the first arc-shaped groove.

4. The clamping device according to claim 1, characterized in that, When the drive shaft (25) slides along the straight groove away from the clamping plate (21), it drives the clamping plate (21) to retract and open through the linkage (24).

5. A clamping device according to claim 1, characterized in that, When the drive shaft (25) slides along the straight groove toward the clamping plate (21), it drives the clamping plate (21) to extend and close through the linkage (24).

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