Automatic clamping device

Abstract

The utility model discloses an automatic clamping device which comprises a cross beam, sliding blocks are connected to the two sides of the inner side face of the cross beam in a sliding mode, L-shaped plates are fixedly connected to the outer surfaces of the sliding blocks, cylinder bases are fixedly connected to the lower surfaces of the L-shaped plates, and limiting plates are connected to the inner top walls of the cylinder bases in a sliding mode. According to the automatic clamping device, through the arrangement of a connecting rod, a first spring, a clamping sleeve, a clamping piece, a second spring, a limiting column and a limiting hole, the limiting column is pressed, the limiting column and the second spring are contracted into a groove, the clamping piece is pulled downwards, the clamping sleeve is separated from a cylinder base, the connecting rod drives a limiting plate to move downwards along with the clamping sleeve, the first spring is compressed, the clamping sleeve is rotated, and the clamping piece is clamped. The clamping pieces with different surfaces are selected according to the shapes of the workpieces, under the action of first springs and second springs, connecting rods and limiting plates are reset, limiting columns are clamped in limiting holes, the device can clamp the workpieces with different shapes according to requirements, and use is more flexible and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, in particular to an automatic clamping device. Background Art

[0002] The clamping device is used to install the workpiece quickly, conveniently and safely. It is an indispensable component in mechanical processing. When moving the workpiece, it is necessary to fix the workpiece with the clamping device before moving. When processing the workpiece, the workpiece needs to be installed (positioned) and clamped (clamped).

[0003] After searching, Chinese patent publication (announcement) number CN211387508U discloses an automatic welding clamping device, wherein a telescopic mechanism is provided on the clamping bracket; a driving mechanism for driving the telescopic mechanism is fixed on one side of the clamping bracket; clamping arms are hingedly provided at the hinged parts of the two clamping arms; a protrusion is provided at the bottom of the clamping arms, and the two protrusions are hinged to the telescopic mechanism; a clamping mechanism is provided at the joint of the two clamping arms; a sliding groove is provided on the clamping arm, and the bottom of the sliding groove is connected to a clamping plate through a second telescopic rod; a second spring is provided around the periphery of the second telescopic rod. The automatic welding clamping device can prevent parts from being damaged by the provision of a clamping mechanism; by providing a control device 16 and two wires; it can further control the operation of the drive motor, thereby further preventing parts from being damaged; by providing a connecting rod mechanism, it can further ensure that parts are clamped without damage.

[0004] Although the above patent can prevent parts from being damaged by clamping, the clamping device has a small application range and cannot be adjusted according to the shape of the workpiece. The clamping device needs to be replaced frequently, which is not only time-consuming and labor-intensive, but also reduces processing efficiency and has poor flexibility in use. Therefore, it is necessary to design an automatic clamping device to solve the above problems. Utility Model Content

[0005] The main purpose of the utility model is to provide an automatic clamping device, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An automatic clamping device comprises a crossbeam, both sides of the inner side surface of the crossbeam are slidably connected with sliders, the outer surface of the slider is fixedly connected with an L-shaped plate, the lower surface of the L-shaped plate is fixedly connected with a cylinder seat, the inner top wall of the cylinder seat is slidably connected with a limiting plate, the lower surface of the limiting plate is fixedly connected with a connecting rod, the outer surface of the connecting rod is sleeved with a first spring, one end of the connecting rod is fixedly connected with a ferrule; the lower surface of the ferrule is fixedly connected with a clamping piece, the bottom of the outer surface of the cylinder seat is provided with a groove, the inside of the groove is fixedly connected with a second spring, one end of the second spring is fixedly connected with a limiting column, and limiting holes are provided on both sides of the outer surface of the ferrule.

[0008] In order to prevent the workpiece from being damaged by excessive clamping force, the utility model provides an automatic clamping device, and rubber pads are fixedly connected to both sides of the outer surface of the clamping member.

[0009] In order to achieve the effect of facilitating the change of the position of the connecting plate, as an automatic clamping and holding device of the utility model, an electric push rod is fixedly connected to the middle of the upper surface of the beam, and the output end of the electric push rod is fixedly connected to the connecting plate.

[0010] In order to facilitate clamping of workpieces of different sizes, the utility model provides an automatic clamping device, a first connecting ear is fixedly connected to the lower surface of the connecting plate, a support arm is rotatably connected to the inside of the first connecting ear, and one end of the support arm is rotatably connected to the L-shaped plate.

[0011] In order to facilitate the support of the crossbeam, as an automatic clamping device of the utility model, a support plate is fixedly connected to the middle of the back side of the crossbeam, and a second connecting ear is movably connected to the outer surface of the support plate.

[0012] In order to facilitate the adjustment of the clamping angle, the utility model provides an automatic clamping device, wherein the upper surface of the second connecting ear is fixedly connected to a motor, the output end of the motor is fixedly connected to a rotating rod, and the rotating rod is fixedly connected to the support plate.

[0013] In order to facilitate the adjustment of the clamping height, as an automatic clamping device of the utility model, the back side of the second connecting ear is fixedly connected to the first guide block, and the inner side surface of the first guide block is transmission-connected to the first guide rail.

[0014] In order to facilitate the adjustment of the clamping position, as an automatic clamping device of the utility model, the lower surface of the first guide rail is fixedly connected to the second guide block, and the inner surface of the second guide block is drivingly connected to the second guide rail.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. In the utility model, through the arrangement of the connecting rod, the first spring, the ferrule, the clamping piece, the second spring, the limit column and the limit hole, the limit column is pressed to shrink it and the second spring to the inside of the groove, the clamping piece is pulled downward to make the ferrule detach from the cartridge seat, and the connecting rod drives the limit plate to move downward with the ferrule, so that the first spring is compressed, the ferrule is rotated, and clamping pieces with different surfaces are selected according to the shape of the workpiece. Under the action of the first spring and the second spring, the connecting rod and the limit plate are reset, the limit column is clamped in the inside of the limit hole, and the ferrule is fixed to the outer surface of the cartridge seat, thereby increasing the stability and firmness of the clamping piece when in use, so that the device can clamp workpieces of different shapes as required, and is more flexible and convenient to use.

[0017] 2. In the utility model, through the arrangement of rubber pads, electric push rods, support arms, motors and rotating rods, the rubber pads are in contact with the workpiece, increasing the friction force to avoid displacement of the workpiece during clamping, and at the same time providing a certain buffer space for the fixation of the workpiece to prevent damage to the workpiece caused by long-term rigid connection. When the connecting plate moves under the action of the electric push rod, the first connecting ear drives the L-shaped plate and the slider to move through the support arm, thereby adjusting the spacing between the two groups of clamping parts, so that the device can be used to clamp workpieces of different sizes. The output end of the motor drives the rotating rod to rotate, driving the support plate to rotate a certain angle inside the second connecting ear, thereby adjusting the angle of the clamping mechanism. Workpieces at different angles can be clamped, and the angle of the clamped workpiece can be adjusted, thereby expanding the scope of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0019] Figure 2 It is a rear view structural schematic diagram of an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the crossbeam structure of an embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the cartridge holder according to an embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the second connecting ear structure of an embodiment of the utility model.

[0023] In the figure: 1. crossbeam; 2. slider; 3. L-shaped plate; 4. cylinder seat; 5. limit plate; 6. connecting rod; 7. first spring; 8. ferrule; 9. clamping piece; 10. groove; 11. second spring; 12. limit column; 13. limit hole; 14. rubber pad; 15. electric push rod; 16. connecting plate; 17. first connecting ear; 18. support arm; 19. support plate; 20. second connecting ear; 21. motor; 22. rotating rod; 23. first guide block; 24. first guide rail; 25. second guide block; 26. second guide rail. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example

[0026] like Figure 1-5 As shown, an automatic clamping device comprises a crossbeam 1, both sides of the inner side surface of the crossbeam 1 are slidably connected with sliders 2, the outer surface of the slider 2 is fixedly connected with an L-shaped plate 3, the lower surface of the L-shaped plate 3 is fixedly connected with a cylinder seat 4, the inner top wall of the cylinder seat 4 is slidably connected with a limiting plate 5, the lower surface of the limiting plate 5 is fixedly connected with a connecting rod 6, the outer surface of the connecting rod 6 is sleeved with a first spring 7, one end of the connecting rod 6 is fixedly connected with a clamping sleeve 8; the lower surface of the clamping sleeve 8 is fixedly connected with a clamping piece 9, the bottom of the outer surface of the cylinder seat 4 is provided with a groove 10, the interior of the groove 10 is fixedly connected with a second spring 11, one end of the second spring 11 is fixedly connected to a limiting column 12, and both sides of the outer surface of the clamping sleeve 8 are provided with limiting holes 13.

[0027] When in use, through the arrangement of the connecting rod 6, the first spring 7, the ferrule 8, the clamping piece 9, the second spring 11, the limiting column 12 and the limiting hole 13, the slider 2 is slidably connected to the inner side of the beam 1, and the cylinder seat 4 is supported by the L-shaped plate 3. The two sets of clamping pieces 9 clamp and fix the workpiece, and the limiting column 12 is pressed to shrink it and the second spring 11 to the inside of the groove 10, and the clamping piece 9 is pulled downward to make the ferrule 8 detach from the cylinder seat 4. The connecting rod 6 drives the limiting plate 5 to move downward with the ferrule 8, so that the first spring 7 is compressed. , rotate the ferrule 8, select the clamping piece 9 with different surfaces according to the shape of the workpiece, and then align the ferrule 8 with the cartridge seat 4. Under the elastic action of the first spring 7, the connecting rod 6 and the limiting plate 5 are reset. Under the elastic action of the second spring 11, the limiting column 12 is clamped in the limiting hole 13, thereby fixing the ferrule 8 on the outer surface of the cartridge seat 4, increasing the stability and firmness of the clamping piece 9 when in use, so that the device can clamp workpieces of different shapes as needed, increasing the applicability of the device, and making it more flexible and convenient to use.

[0028] In this embodiment, rubber pads 14 are fixedly connected to both sides of the outer surface of the clamping member 9 .

[0029] During specific use, through the setting of the rubber pad 14, the rubber pad 14 contacts the workpiece, increases the friction, avoids the displacement of the workpiece during clamping, further enhances the clamping effect, and at the same time provides a certain buffer space for the fixation of the workpiece, prevents damage to the workpiece caused by long-term hard connection, and enhances the protection.

[0030] In this embodiment, an electric push rod 15 is fixedly connected to the middle of the upper surface of the cross beam 1 , and a connecting plate 16 is fixedly connected to the output end of the electric push rod 15 .

[0031] During specific use, through the setting of the electric push rod 15, the connecting plate 16 is fixed to the output end of the electric push rod 15. When the output end of the electric push rod 15 is extended or retracted, the first connecting ear 17 can be driven up and down by the connecting plate 16 to provide power support for the automatic clamping of the device.

[0032] In this embodiment, a first connecting ear 17 is fixedly connected to the lower surface of the connecting plate 16 , a supporting arm 18 is rotatably connected inside the first connecting ear 17 , and one end of the supporting arm 18 is rotatably connected to the L-shaped plate 3 .

[0033] During specific use, through the setting of the support arm 18, one end of the support arm 18 is rotatably connected to the inside of the first connecting ear 17, and the other end is rotatably connected to the outer surface of the L-shaped plate 3. Therefore, when the connecting plate 16 moves under the action of the electric push rod 15, the first connecting ear 17 drives the L-shaped plate 3 and the slider 2 to move through the support arm 18, thereby adjusting the distance between the two groups of clamping members 9, so that the device can be used to clamp workpieces of different sizes, thereby further improving the use range of the device and enhancing its applicability.

[0034] In this embodiment, a support plate 19 is fixedly connected to the middle of the back side of the cross beam 1 , and a second connection ear 20 is movably connected to the outer surface of the support plate 19 .

[0035] During specific use, by setting the second connecting ear 20, the support plate 19 is movably connected to the inside of the second connecting ear 20, and the angle of the support plate 19 can be changed.

[0036] In this embodiment, a motor 21 is fixedly connected to the upper surface of the second connecting ear 20 , a rotating rod 22 is fixedly connected to the output end of the motor 21 , and the rotating rod 22 is fixedly connected to the support plate 19 .

[0037] During specific use, through the setting of the motor 21, the rotating rod 22 is fixedly connected to the support plate 19, and the support plate 19 is movably connected to the inside of the second connecting ear 20. When the output end of the motor 21 drives the rotating rod 22 to rotate, it can drive the support plate 19 to rotate a certain angle inside the second connecting ear 20, thereby adjusting the angle of the clamping mechanism, and can clamp workpieces at different angles. At the same time, the angle of the clamped workpiece can be adjusted to expand the scope of use.

[0038] In this embodiment, the back surface of the second connecting ear 20 is fixedly connected to the first guide block 23 , and the inner side surface of the first guide block 23 is drivingly connected to the first guide rail 24 .

[0039] During specific use, through the setting of the first guide rail 24, the first guide block 23 is driven on the outer surface of the first guide rail 24 to drive the crossbeam 1 to move up and down, thereby adjusting the height of the clamping mechanism, so that the workpiece is clamped more smoothly.

[0040] In this embodiment, the lower surface of the first guide rail 24 is fixedly connected to the second guide block 25 , and the inner surface of the second guide block 25 is drivingly connected to the second guide rail 26 .

[0041] During specific use, through the setting of the second guide rail 26, the second guide block 25 is driven on the outer surface of the second guide rail 26, thereby driving the first guide rail 24 to translate left and right in the horizontal direction of the device, thereby adjusting the horizontal position of the device clamping mechanism, and the adjustability is enhanced.

[0042] Working principle: During use, the output end of the electric push rod 15 is extended and retracted, and the first connecting ear 17 is driven to move up and down through the connecting plate 16. The first connecting ear 17 drives the L-shaped plate 3 and the slider 2 to move closer to or apart from each other through the support arm 18. The spacing between the two sets of clamping members 9 is adjusted so that the device can be used to clamp workpieces of different sizes. The limit column 12 is pressed to shrink it and the second spring 11 to the inside of the groove 10, and the clamping member 9 is pulled downward to make the ferrule 8 disengage from the cartridge seat 4. The connecting rod 6 drives the limit plate 5 to move downward with the ferrule 8, so that the first spring 7 is compressed, and the ferrule 8 is rotated. The clamping members 9 with different surfaces are selected according to the shape of the workpiece, and then the ferrule 8 is aligned with the cartridge seat 4. Under the elastic action of the first spring 7, the connecting rod 6 and the limit plate 5 are reset. Under the elastic action of the second spring 11, the limit column 12 is clamped in the limit hole 1 3, the ferrule 8 is fixed to the outer surface of the cylinder seat 4, the stability and firmness of the clamping member 9 when in use are increased, and workpieces of different shapes can be clamped according to needs. The rubber pad 14 contacts the workpiece to avoid displacement of the workpiece during clamping, and at the same time provides a certain buffer space for the fixation of the workpiece. When the output end of the motor 21 drives the rotating rod 22 to rotate, it drives the support plate 19 to rotate a certain angle inside the second connecting ear 20, so that workpieces at different angles can be clamped, or the angle of the clamped workpiece can be adjusted. The first guide block 23 is driven on the outer surface of the first guide rail 24 to drive the crossbeam 1 to move up and down, and the second guide block 25 is driven on the outer surface of the second guide rail 26 to drive the first guide rail 24 to translate left and right in the horizontal direction of the device, thereby adjusting the height and position of the clamping mechanism, so that the workpiece clamping is smoother.

[0043] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An automatic clamping device, comprising a crossbeam (1), characterized in that: Both sides of the inner side surface of the cross beam (1) are slidably connected to a slider (2), the outer surface of the slider (2) is fixedly connected to an L-shaped plate (3), the lower surface of the L-shaped plate (3) is fixedly connected to a cylinder seat (4), the inner top wall of the cylinder seat (4) is slidably connected to a limit plate (5), the lower surface of the limit plate (5) is fixedly connected to a connecting rod (6), the outer surface of the connecting rod (6) is sleeved with a first spring (7), and one end of the connecting rod (6) is fixedly connected to a clamping sleeve (8); A clamping piece (9) is fixedly connected to the lower surface of the ferrule (8); a groove (10) is provided at the bottom of the outer surface of the cartridge seat (4); a second spring (11) is fixedly connected inside the groove (10); one end of the second spring (11) is fixedly connected to a limiting column (12); and limiting holes (13) are provided on both sides of the outer surface of the ferrule (8).

2. The automatic clamping device according to claim 1, characterized in that: Rubber pads (14) are fixedly connected to both sides of the outer surface of the clamping member (9).

3. The automatic clamping device according to claim 1, characterized in that: An electric push rod (15) is fixedly connected to the middle of the upper surface of the cross beam (1), and a connecting plate (16) is fixedly connected to the output end of the electric push rod (15).

4. The automatic clamping device according to claim 3, characterized in that: A first connecting ear (17) is fixedly connected to the lower surface of the connecting plate (16), a supporting arm (18) is rotatably connected inside the first connecting ear (17), and one end of the supporting arm (18) is rotatably connected to the L-shaped plate (3).

5. The automatic clamping device according to claim 1, characterized in that: A support plate (19) is fixedly connected to the middle portion of the back side of the cross beam (1), and a second connection ear (20) is movably connected to the outer surface of the support plate (19).

6. The automatic clamping device according to claim 5, characterized in that: A motor (21) is fixedly connected to the upper surface of the second connecting ear (20), a rotating rod (22) is fixedly connected to the output end of the motor (21), and the rotating rod (22) is fixedly connected to the support plate (19).

7. The automatic clamping device according to claim 5, characterized in that: The back side of the second connecting ear (20) is fixedly connected to a first guide block (23), and the inner side surface of the first guide block (23) is drivingly connected to a first guide rail (24).

8. The automatic clamping device according to claim 7, characterized in that: The lower surface of the first guide rail (24) is fixedly connected to a second guide block (25), and the inner surface of the second guide block (25) is drivingly connected to a second guide rail (26).

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