Rotating clamping device

Abstract

The present invention discloses a rotary clamping device, including a clamping mechanism for clamping a workpiece, a rotary mechanism for driving the clamping mechanism to rotate, the clamping mechanism is composed of a clamping assembly and a driving assembly, the clamping claw of the clamping assembly cooperates with the plug block of the driving assembly, the plug block of the driving assembly moves up and down, the lower inclined surface of the clamping claw and the upper inclined surface of the plug block are mutually influenced by the angle to clamp or release the object, replacing the original cylinder parallel clamping, solving the problem of air pipe winding. The rotary clamping device of the present invention can effectively solve the problem that the cylinder air pipe and the sensor line will rotate with the workpiece, and has the advantages of simple structure, small space occupation and good stability.

Description

Technical Field

[0001] The invention relates to a clamping device, in particular to a rotating clamping device. Background Art

[0002] Existing rotary clamping devices are all composed of two parts. When the motor rotates, the cylinder is clamped in parallel and fixed at the rotating workpiece position, and rotates with the workpiece. During the rotation of the motor, the cylinder air pipe and the sensor line will rotate with the workpiece. In this way, the air pipes will be entangled together, which will affect the ventilation efficiency of the cylinder and the additional load brought to the motor by the entanglement, causing the risk of excessive motor load. In addition, the air pipes are not easy to tie, which affects the structural installation space. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a rotating clamping device in view of the problem in the prior art that when the device is clamped and rotated, the line is easily entangled.

[0004] The present invention achieves the above-mentioned object through the following technical solutions: A rotary clamping device, which comprises: a clamping mechanism for clamping a workpiece, a rotating mechanism for driving the clamping mechanism to rotate;

[0005] The clamping mechanism includes a clamping assembly and a driving assembly, wherein the driving assembly is installed below the clamping assembly;

[0006] The clamping assembly includes a clamping jaw, a rotating spindle, and a torsion spring. The rotating spindle is provided with a through hole for installing the clamping jaw, and the clamping jaw is installed in the through hole through the torsion spring.

[0007] The driving assembly includes an insert block, an insert block fixing plate, a push plate, a double-rod cylinder, a table plate, and a bearing. The insert block is installed on the insert block fixing plate, and the insert block is located directly below the through hole. The insert block fixing plate, the bearing, the push plate, and the table plate are sequentially sleeved on the rotating spindle from top to bottom; the double-rod cylinder is installed on the table plate, located between the push plate and the table plate, and the output end of the double-rod cylinder acts on the push plate;

[0008] The bottom of the clamping jaw is provided with a lower inclined surface, and the inserting block is provided with an upper inclined surface matched with the lower inclined surface.

[0009] As a further optimization solution of the present invention, the rotating mechanism includes a stepper motor and a coupling. The stepper motor is installed below the table, and the output end of the stepper motor is connected to the rotating spindle through the coupling.

[0010] As a further optimization solution of the present invention, the driving assembly also includes a hook, which is fixed around the push plate, and the top end of the hook is hooked on the plug block fixing plate.

[0011] As a further optimization scheme of the present invention, the bearing is a thrust ball bearing, and an upper positioning groove is provided on the bottom surface of the plug-in block fixing plate, and a lower positioning groove is provided on the top surface of the push plate, and the thrust ball bearing is positioned in the upper positioning groove and the lower positioning groove.

[0012] As a further optimization solution of the present invention, the rotary clamping device also includes a sensor, and the sensor is installed on one side of the double-rod cylinder.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] By setting up a double-rod cylinder, clamping claws, torsion springs, and inserts, the original electrically controlled clamping device is changed to a clamping component that can complete clamping through up and down mechanical movement, reducing the entanglement problem caused by the equipment lines.

[0015] By providing a clamping claw and an insert block that match the upper inclined surface and the lower inclined surface, the workpiece can be clamped by moving the insert block up and down without requiring too many lines, making the clamping component structure simpler and simplifying the equipment.

[0016] By setting a pull hook, the problem of the plug block fixing plate not falling when the double-rod cylinder drives the push plate to fall can be prevented. The pull hook can effectively pull the plug block fixing plate back to the starting position.

[0017] By setting a rotating mechanism and a rotating main shaft, the clamping mechanism realizes clamping by up and down movement, which effectively solves the impact of line winding when the device rotates.

[0018] By arranging the thrust ball bearing, the split rotation between the insert block fixing plate and the push plate is realized, and when the rotating main shaft rotates, they will not affect each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a rotary clamping device of the present invention;

[0020] Figure 2 It is an exploded view of a rotary clamping device of the present invention;

[0021] Figure 3 is a cross-sectional view of a rotary clamping device of the present invention;

[0022] Figure 4 It is a structural schematic diagram of a clamping assembly of a rotary clamping device of the present invention;

[0023] 1-clamping mechanism, 2-rotating mechanism, 3-sensor, 11-clamping assembly, 12-driving assembly, 21-stepping motor, 22-coupling, 111-clamping claw, 112-rotating spindle, 113-torsion spring, 121-insert block, 122-insert block fixing plate, 123-push plate, 124-double-rod cylinder, 125-table, 126-bearing, 127-hook, 1121-through hole. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0025] Example

[0026] like Figure 1 , Figure 3 A rotary clamping device shown includes a clamping mechanism 1 for clamping a workpiece and a rotating mechanism 2 for driving the clamping mechanism 1 to rotate. The rotary clamping device does not have excessive line connections. The clamping mechanism 1 replaces the original cylinder clamping, which effectively reduces the additional load on the motor caused by the winding of the air pipe.

[0027] like Figure 4 The clamping mechanism 1 comprises a clamping assembly 11 and a driving assembly 12, wherein the driving assembly is installed below the clamping assembly 11. The clamping of the clamping assembly 11 is achieved by lifting and lowering the driving assembly 12, replacing the original cylinder clamping, and there is no line or air pipe even when rotating.

[0028] The clamping assembly 11 includes a clamping jaw 111, a rotating spindle 112, and a torsion spring 113. The rotating spindle 112 has at least two through holes 1121 for mounting the clamping jaw 111. The clamping jaw 111 is mounted in the through hole 1121 through the torsion spring 113. The torsion spring 113 always keeps the clamping jaw 111 in an open state when no object is clamped. The bottom surface of the clamping jaw 111 is provided with a lower inclined surface, which is used to cooperate with the corresponding upper inclined surface so that the clamping jaw 111 can clamp an object. The rotating spindle 112 is connected to the output end of the rotating mechanism 2 and is driven to rotate by the rotating mechanism 2.

[0029] like Figure 2As shown, the driving assembly 12 includes an insert block 121, an insert block fixing plate 122, a push plate 123, a double-rod cylinder 124, a table 125, and a bearing 126. The insert block 121 is installed on the insert block fixing plate 122. There is an insert block 121 directly below each through hole 1121. The insert block 121 is provided with an upper inclined surface that matches the lower inclined surface. When the insert block 121 is lifted and lowered, the upper inclined surface hits the lower inclined surface during the insertion of the insert block 121 into the through hole 1121, so that the clamping claw 111 changes from a loose state to a clamping state. The insert block fixing plate 122, the bearing 126, the push plate 123, and the table 125 are sequentially sleeved on the rotating main shaft 112 from top to bottom. The bearing 126 is a thrust ball bearing, and an upper positioning groove is provided on the bottom surface of the plug-in block fixing plate 122, and a lower positioning groove is provided on the top surface of the push plate 123. The thrust ball bearing is positioned in the upper positioning groove and the lower positioning groove, and the thrust ball bearing can ensure that the plug-in block fixing plate 122 and the push plate 123 do not affect each other when the rotating main shaft 112 rotates. Two double-rod cylinders 124 are installed on both sides of the table 125, located between the push plate 123 and the table 125, and the output end of the double-rod cylinder 124 acts on the push plate 123, and the double-rod cylinder 124 drives the push plate 123 to rise and fall, and the push plate 123 drives the plug-in block fixing plate 122 to rise and fall, so as to realize the plug-in block 121 to be pulled out or inserted into the through hole 1121, and to realize the clamping or loosening of the clamping claw 111. A sensor 3 is installed on one side of the double-rod cylinder 124 to sense whether the device has returned to the initial point. It mainly determines whether the device is in the initial position through the sensor sheet set on the rotating mechanism 2. When the sensor sheet is within the sensing range of the sensor 3, it is in the initial position.

[0030] like Figure 2 As shown, the rotating mechanism 2 includes a stepper motor 21 and a coupling 22 . The stepper motor 21 is installed below the platform 125 , and the output end of the stepper motor 21 is connected to the rotating main shaft 112 through the coupling 22 .

[0031] When working, the sensor 3 senses the induction sheet, the induction light turns on, and the clamping jaw 111 is in the initial position and in an open state due to the elastic force of the torsion spring 113. The object is placed on the rotating spindle 112, the device detects the object, and the double-rod cylinder 124 starts to work. The double-rod cylinder 124 pushes the push plate 123 up, and the plug-in block fixing plate 122 is pushed up by the push plate. At the same time, the plug-in block 121 also rises. The clamping jaw 111 is affected by the inclined surface on the plug-in block 121, gradually tightens toward the object, and finally clamps the object. After clamping, the stepper motor 21 starts to rotate at a predetermined angle. Since the thrust ball bearing is composed of three parts, during the rotation process, the push plate 123 and the plug-in block fixing plate 122 do not interfere with each other. After the detection is completed, the plug-in block 121 withdraws from the through hole 1121, and the clamping jaw 111 is stretched open by the torsion spring 113 to release the object.

[0032] Example 2

[0033] A rotary clamping device as described in Example 1 is characterized in that the driving assembly 12 further includes a hook 127, which is fixed around the push plate 123, and the top of the hook 127 is hooked on the plug-in block fixing plate 122. The hook is used to pull the plug-in block fixing plate 122 to move downward to prevent the plug-in block fixing plate 122 from getting stuck and stopping the downward movement when the double-rod cylinder descends. When the object is assembled or tested, the double-rod cylinder moves downward, the hook 127 pulls the plug-in block fixing plate 122 downward, the plug 121 withdraws from the through hole 1121, and the clamping jaws 111 are opened by the spring to release the object.

[0034] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. A rotary clamping device, characterized in that: It comprises a clamping mechanism (1) for clamping a workpiece, and a rotating mechanism (2) for driving the clamping mechanism (1) to rotate; The clamping mechanism (1) comprises a clamping assembly (11) and a driving assembly (12), wherein the driving assembly is installed below the clamping assembly (11); The clamping assembly (11) comprises a clamping jaw (111), a rotating spindle (112), and a torsion spring (113); a through hole (1121) for mounting the clamping jaw (111) is provided on the rotating spindle (112); the clamping jaw (111) is mounted in the through hole (1121) via the torsion spring (113); and the rotating mechanism (2) is transmission-connected to the rotating spindle (112); The driving assembly (12) comprises an insert block (121), an insert block fixing plate (122), a push plate (123), a double-rod cylinder (124), a table (125), and a bearing (126); the insert block (121) is mounted on the insert block fixing plate (122), and the insert block (121) is located directly below the through hole (1121); the insert block fixing plate (122), the bearing (126), the push plate (123), and the table (125) are sequentially sleeved on the rotating main shaft (112) from top to bottom; the double-rod cylinder (124) is mounted on the table (125), and is located between the push plate (123) and the table (125), and the output end of the double-rod cylinder (124) acts on the push plate (123); The bottom of the clamping jaw (111) is provided with a lower inclined surface, and the insert block (121) is provided with an upper inclined surface matching the lower inclined surface.

2. The rotary clamping device according to claim 1, characterized in that: The rotating mechanism (2) comprises a stepping motor (21) and a coupling (22). The stepping motor (21) is installed below the platform (125), and the output end of the stepping motor (21) is connected to the rotating main shaft (112) through the coupling (22).

3. The rotary clamping device according to claim 1, characterized in that: The driving assembly (12) further comprises a hook (127) which is fixed around the push plate (123) and the top end of the hook (127) is hooked on the plug-in block fixing plate (122).

4. The rotary clamping device according to claim 1, characterized in that: The bearing (126) is a thrust ball bearing, and an upper positioning groove is provided on the bottom surface of the insert block fixing plate (122), and a lower positioning groove is provided on the top surface of the push plate (123), and the thrust ball bearing is positioned in the upper positioning groove and the lower positioning groove.

5. The rotary clamping device according to claim 1, characterized in that: The rotary clamping device also includes a sensor (3), and the sensor (3) is installed on one side of the double-rod cylinder (124).

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