Clamping device

Abstract

The utility model relates to the technical field of mechanical clamps, in particular to a clamping device which comprises a square frame and a buffering unit, the buffering unit comprises a base, an obtuse angle plate, a buffering plate, a spring, a limiting plate, a base, a connecting rod, a movable plate frame, a sliding rod, a connecting assembly and an auxiliary assembly, and the auxiliary assembly is arranged on the inner side wall of the square frame. When an object is clamped, the connecting assembly is used for driving the movable plate frame to move downwards, the connecting rod can abut against the obtuse angle plate to turn inwards, in the process, the obtuse angle plate rotates clockwise around the base till the buffer plate makes contact with the clamping piece, at the moment, the spring is compressed, the clamping force is relieved through the characteristics of the spring, and the auxiliary assembly is used for improving the stability of the movable plate frame. And the clamping force transmitted by the buffer plate is uniformly dispersed through the mode, so that the phenomenon that the clamping force is too large is avoided, the surface of the clamped object can be effectively protected, and the cost expenditure is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mechanical clamping technology, and in particular to a clamping device. Background Technology

[0002] Fixtures are devices used in mechanical manufacturing to fix workpieces in the correct position for construction or inspection. Currently, most clamping devices use external clamping to fix the workpiece. However, when grinding the surface of a round tube, if external clamping is used, the grinding will be incomplete due to the obstruction caused by the clamping device.

[0003] The prior art patent application with authorization publication number CN221792295U discloses a machining clamping device, including a base plate, a mounting plate fixedly connected to the base plate, a circular hole on the upper part of the mounting plate, a rotating mechanism on the right side of the mounting plate, the rotating mechanism passing through the circular hole, a clamping component on the rotating mechanism, and a mounting table fixedly connected to the base plate. The device can shield the surface of the round tube during grinding to avoid incomplete grinding. It can perform internal and external clamping of the workpiece, which greatly improves the applicability of the clamping device.

[0004] However, in the aforementioned prior art, the clamping force cannot be evenly distributed, which can easily lead to excessive clamping force, causing damage to the surface of the clamped object and increasing costs. Utility Model Content

[0005] The purpose of this utility model is to provide a clamping device that solves the problem in the prior art that the clamping force cannot be evenly distributed, which easily leads to excessive clamping force, causing damage to the surface of the clamped object and increasing costs.

[0006] To achieve the above objectives, this utility model provides a clamping device, including a square frame and a buffer unit. The buffer unit includes a base, an obtuse-angle plate, a buffer plate, a spring, a limiting plate, a base, a connecting rod, a movable plate frame, a sliding rod, a connecting assembly, and auxiliary assemblies. The buffer unit is connected to the square frame. The base is fixedly connected to the square frame and located on one side of the square frame. The obtuse-angle plate is rotatably connected to the base and located on the inner side wall of the base. The buffer plate is disposed on one side of the obtuse-angle plate, and the obtuse-angle plate has a mounting groove. One end of the spring is fixedly connected to the obtuse-angle plate and located on one side of the obtuse-angle plate. The other end of the spring... One end is fixedly connected to the buffer plate and located on one side of the buffer plate. The slide rod is fixedly connected to the buffer plate and located on one side of the buffer plate, and the slide rod is slidably engaged with the obtuse angle plate. The limiting plate is fixedly connected to the slide rod and located at one end of the slide rod. The base is fixedly connected to the obtuse angle plate and located above the obtuse angle plate. The movable plate frame is slidably connected to the square frame and located on the inner side wall of the square frame. The two ends of the connecting rod are rotatably connected to the movable plate frame and the base, respectively. The connecting assembly is connected to the square frame and the movable plate frame, respectively. The auxiliary assembly is disposed on the inner side wall of the square frame.

[0007] The connecting assembly includes a lead screw, a connecting frame, and a mounting frame. The lead screw is threadedly connected to the moving plate frame. The connecting frame is fixedly connected to the lead screw and located above the lead screw. The connecting frame is rotatably engaged with the square frame. The mounting frame is fixedly connected to the square frame and located above the square frame.

[0008] The connecting assembly further includes a pin shaft, which is fixedly connected to the square frame and located on the inner bottom wall of the square frame, and the pin shaft is rotatably engaged with the lead screw.

[0009] The auxiliary component includes a support rod and two fixed plates. The two fixed plates are fixedly connected to the square frame and are located on the inner sidewall of the square frame. The support rod is fixedly connected to the two fixed plates and is located between the two fixed plates. The movable plate frame has a sliding hole, which is slidably engaged with the support rod.

[0010] The auxiliary component further includes a support ring and a connecting rib. The support ring is fixedly connected to the movable plate frame and is located above the movable plate frame. The support ring is slidably engaged with the support rod. The two ends of the connecting rib are fixedly connected to the support ring and the movable plate frame, respectively.

[0011] This utility model discloses a clamping device. When clamping an item, the connecting assembly drives the movable plate frame to move downwards. The connecting rod abuts against the obtuse-angled plate and flips it inwards. During this process, the obtuse-angled plate rotates clockwise around the base until the buffer plate contacts the clamping element. At this time, the spring is compressed, and the spring characteristics are used to relieve the clamping force. The auxiliary assembly is used to improve the stability of the movable plate frame. Releasing the clamped item is the reverse operation. In this way, the clamping force transmitted by the buffer plate is evenly distributed, avoiding excessive clamping force, effectively protecting the surface of the clamped item, and reducing cost expenditure. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the clamping device of this utility model.

[0014] Figure 2 This is a right view of the clamping device of this utility model.

[0015] Figure 3 This is the utility model Figure 2 A sectional view along line AA.

[0016] Figure 4 This is the utility model Figure 3 Enlarged view of the local structure at point B.

[0017] 101-Square frame, 102-Base, 103-Obtuous angle plate, 104-Buffer plate, 105-Spring, 106-Limiting plate, 107-Base, 108-Connecting rod, 109-Moving plate frame, 110-Screw rod, 111-Connecting frame, 112-Mounting frame, 113-Pin pin shaft, 114-Slide rod, 115-Fixing plate, 116-Support ring, 117-Connecting rib, 118-Mounting groove, 119-Sliding hole, 120-Drive motor, 121-Support rod. Detailed Implementation

[0018] Please see Figures 1 to 4 ,in, Figure 1 This is a schematic diagram of the clamping device of this utility model. Figure 2 This is a right view of the clamping device of this utility model. Figure 3 This is the utility model Figure 2 AA-line sectional view, Figure 4 This is the utility model Figure 3 Enlarged view of the local structure at point B.

[0019] This utility model provides a clamping device, including a square frame 101 and a buffer unit. The buffer unit includes a base 102, an obtuse-angle plate 103, a buffer plate 104, a spring 105, a limiting plate 106, a base 107, a connecting rod 108, a movable plate frame 109, a slide rod 114, a connecting assembly, and an auxiliary assembly. The connecting assembly includes a lead screw 110, a connecting frame 111, a mounting frame 112, and a pin shaft 113. The auxiliary assembly includes a support rod 121, two fixing plates 115, a support ring 116, and a connecting rib 117. The obtuse-angle plate 103 has a mounting groove 118, and the movable plate frame 109 has a sliding hole 119.

[0020] The buffer unit is connected to the square frame 101; the base 102 is fixedly connected to the square frame 101 and located on one side of the square frame 101; the obtuse angle plate 103 is rotatably connected to the base 102 and located on the inner sidewall of the base 102; the buffer plate 104 is disposed on one side of the obtuse angle plate 103; the obtuse angle plate 103 has a mounting groove 118; one end of the spring 105 is fixedly connected to the obtuse angle plate 103 and located on one side of the obtuse angle plate 103; the other end of the spring 105 is fixedly connected to the buffer plate 104 and located on one side of the buffer plate 104; the slide rod 114 is fixedly connected to the buffer plate 104. The sliding rod 114 is slidably engaged with the obtuse angle plate 103, the limiting plate 106 is fixedly connected to the sliding rod 114 and located at one end of the sliding rod 114, the base 107 is fixedly connected to the obtuse angle plate 103 and located above the obtuse angle plate 103, the movable plate frame 109 is slidably connected to the square frame 101 and located on the inner side wall of the square frame 101, the two ends of the connecting rod 108 are rotatably connected to the movable plate frame 109 and the base 107 respectively, the connecting assembly is connected to the square frame 101 and the movable plate frame 109 respectively, and the auxiliary assembly is disposed on the inner side wall of the square frame 101.

[0021] In this embodiment, when clamping an item, the connecting assembly drives the movable plate frame 109 to move downwards. The connecting rod 108 abuts against the obtuse angle plate 103 and flips it inwards. During this process, the obtuse angle plate 103 rotates clockwise around the base 107 until the buffer plate 104 contacts the clamping member. At this time, the spring 105 is compressed, and the characteristics of the spring 105 are used to relieve the clamping force. The auxiliary assembly is used to improve the stability of the movable plate frame 109. Releasing the clamped item is the reverse of the clamping operation. In this way, the clamping force transmitted by the buffer plate 104 is evenly distributed, avoiding excessive clamping force, effectively protecting the surface of the clamped item, and reducing cost expenditure.

[0022] Furthermore, the lead screw 110 is threadedly connected to the moving plate frame 109, the connecting frame 111 is fixedly connected to the lead screw 110 and located above the lead screw 110, and the connecting frame 111 is rotatably engaged with the square frame 101, and the mounting frame 112 is fixedly connected to the square frame 101 and located above the square frame 101.

[0023] In this embodiment, the drive motor 120 is fixed to the mounting bracket 112, and its output end is fixed to the connecting bracket 111. Then, the drive motor 120 is started to drive the lead screw 110 to rotate. The purpose of moving the moving plate bracket 109 up and down is achieved by utilizing the characteristics of the thread. The structure is simple and easy to learn and operate.

[0024] Furthermore, the pin shaft 113 is fixedly connected to the square frame 101 and is located on the inner bottom wall of the square frame 101, and the pin shaft 113 is rotatably engaged with the lead screw 110.

[0025] In this embodiment, the pin shaft 113 is used to assist the lead screw 110 in rotating, ensuring the normal operation of the lead screw 110.

[0026] Furthermore, both of the fixed plates 115 are fixedly connected to the square frame 101 and are respectively located on the inner sidewall of the square frame 101. The support rod 121 is fixedly connected to the two fixed plates 115 and is located between the two fixed plates 115. The movable plate frame 109 has a sliding hole 119, and the sliding hole 119 is slidably engaged with the support rod 121.

[0027] In this embodiment, the cooperation between the fixed plate 115 and the support rod 121 can effectively improve the stability of the moving plate frame 109 and prevent the moving plate frame 109 from getting stuck.

[0028] Furthermore, the support ring 116 is fixedly connected to the movable plate frame 109 and is located above the movable plate frame 109, and the support ring 116 is slidably engaged with the support rod 121, and the two ends of the connecting rib 117 are fixedly connected to the support ring 116 and the movable plate frame 109 respectively.

[0029] In this embodiment, the support ring 116 is used to increase the contact area between the sliding hole 119 and the support rod 121, thereby improving the stability of the moving plate frame 109. The connecting rib 117 can improve the connection between the moving plate frame 109 and the support ring 116, and extend the service life of the support ring 116.

[0030] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments, and equivalent variations made in accordance with the claims of this application, still fall within the scope of this application.

Claims

1. A clamping device, comprising a square frame, characterized in that, It also includes a buffer unit, which is connected to the square frame; The buffer unit includes a base, an obtuse-angle plate, a buffer plate, a spring, a limiting plate, a base, a connecting rod, a movable plate frame, a sliding rod, a connecting assembly, and auxiliary components. The base is fixedly connected to the square frame and located on one side of the square frame. The obtuse-angle plate is rotatably connected to the base and located on the inner sidewall of the base. The buffer plate is disposed on one side of the obtuse-angle plate and has a mounting groove. One end of the spring is fixedly connected to the obtuse-angle plate and located on one side of the obtuse-angle plate, and the other end of the spring is fixedly connected to the buffer plate and located on one side of the buffer plate. The sliding rod is fixedly connected to the buffer plate and located on one side of the buffer plate. The sliding rod is slidably engaged with the obtuse angle plate. The limiting plate is fixedly connected to the sliding rod and located at one end of the sliding rod. The base is fixedly connected to the obtuse angle plate and located above the obtuse angle plate. The movable plate frame is slidably connected to the square frame and located on the inner side wall of the square frame. The two ends of the connecting rod are rotatably connected to the movable plate frame and the base, respectively. The connecting assembly is connected to the square frame and the movable plate frame, respectively. The auxiliary assembly is disposed on the inner side wall of the square frame.

2. The clamping device as described in claim 1, characterized in that, The connecting assembly includes a lead screw, a connecting bracket, and a mounting bracket. The lead screw is threadedly connected to the moving plate frame. The connecting bracket is fixedly connected to the lead screw and located above the lead screw. The connecting bracket is rotatably engaged with the square frame. The mounting bracket is fixedly connected to the square frame and located above the square frame.

3. The clamping device as described in claim 2, characterized in that, The connecting assembly also includes a pin shaft, which is fixedly connected to the square frame and located on the inner bottom wall of the square frame, and the pin shaft is rotatably engaged with the lead screw.

4. The clamping device as described in claim 3, characterized in that, The auxiliary component includes a support rod and two fixed plates. The two fixed plates are fixedly connected to the square frame and are located on the inner sidewall of the square frame. The support rod is fixedly connected to the two fixed plates and is located between the two fixed plates. The movable plate frame has a sliding hole, which is slidably engaged with the support rod.

5. The clamping device as described in claim 4, characterized in that, The auxiliary component also includes a support ring and a connecting rib. The support ring is fixedly connected to the movable plate frame and is located above the movable plate frame. The support ring is slidably engaged with the support rod. The two ends of the connecting rib are fixedly connected to the support ring and the movable plate frame, respectively.

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