A device for clamping and opening the jaws with a single spring

Abstract

The present invention relates to a device for clamping and opening and holding a clamping jaw with a single spring, comprising a clamping jaw fixing member provided with an inner hole and a slot, a push rod provided with a clamping point, a spring, a connecting rod seat, a connecting rod and a clamping jaw; the clamping jaw is connected to the clamping jaw fixing member through a connecting rod, and the end of the clamping jaw is connected to the connecting rod seat; one end of the push rod is connected to the connecting rod seat, and the other end is sleeved with a spring after passing through the inner hole; the device realizes opening and holding by the misalignment of the clamping point and the slot after the push rod is extended, and realizes clamping and holding by the alignment of the clamping point and the slot after the push rod is retracted and the elastic force of the spring. Compared with the prior art, the present invention has the advantages of no need for a power source, high flexibility, convenient operation, convenient maintenance, simple structure, and low cost.

Description

Technical Field

[0001] The invention relates to the technical field of automatic assembly, in particular to a device for realizing clamping and opening and holding of clamping jaws by a single spring. Background Art

[0002] In a fully automatic unmanned production line, since the assembly requires two products to be loaded at different stations, the bottoms of the two products to be assembled are irregular, and the only available positioning surface is the outer diameter, and the transfer movement distance between different stations is long. In this context, a clamping mechanism is needed to clamp the product, and then move the product to the station where it needs to be assembled as a whole. During this process, the clamping mechanism needs to continue to clamp the product, that is, the clamping mechanism needs a clamping and holding function; at the station where the product is assembled as a whole, the clamping mechanism needs to remain open, that is, the clamping mechanism needs an open and holding function.

[0003] In the prior art, the clamping mechanism capable of clamping and opening the clamping jaws requires pneumatic clamps and pneumatic valve blocks. During operation, the pneumatic valve block needs to be driven by a power source. In the case of a long transfer distance, multiple power sources need to be set on the transfer path or the power source needs to follow the pneumatic valve block to achieve the clamping and opening of the clamping jaws, and the flexibility of the device is very poor. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a device for clamping and opening the clamping jaws with a single spring, which does not require a power source, has high flexibility, is easy to operate and maintain.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A device for clamping and opening and holding a clamping jaw by a single spring, the device comprising a clamping jaw fixing member provided with an inner hole and a slot, a push rod provided with a clamping point, a spring, a connecting rod seat, a connecting rod and a clamping jaw; the clamping jaw is connected to the clamping jaw fixing member through the connecting rod, and the end of the clamping jaw is connected to the connecting rod seat; one end of the push rod is connected to the connecting rod seat, and the other end passes through the inner hole and is sleeved with a spring; the device achieves opening and holding through the misalignment of the clamping point and the slot after the push rod is extended, and achieves clamping and holding through the alignment of the clamping point and the slot and the elastic force of the spring after the push rod is retracted.

[0007] Preferably, the push rod is provided with a clamping head at one end connected to the connecting rod seat; the connecting rod seat is provided with a clamping groove matching the clamping head; the push rod and the connecting rod seat are connected via the clamping head and the clamping groove.

[0008] More preferably, the device is provided with a spring latch for fixing the spring; the push rod is provided with a pin hole matching the spring latch at one end on which the spring is sleeved; the spring is sleeved between the spring latch and the clamp fixing piece.

[0009] More preferably, the push rod is provided with a slot for rotating the push rod.

[0010] Preferably, the clamping jaw is provided with an obtuse-angle L-shaped swing arm, the bending part of the swing arm is connected to the clamping jaw fixing piece through a connecting rod, and the end of the swing arm is connected to the connecting rod seat.

[0011] More preferably, the clamping jaw is provided with a soft clamping jaw; the soft clamping jaw is made of rubber, latex or polyurethane material.

[0012] More preferably, the swing arm and the connecting rod seat, the swing arm and the connecting rod, and the connecting rod and the clamp fixing piece are all connected via a rotating pin.

[0013] More preferably, a pin retaining spring is provided on the rotating pin.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. No power source is required and the flexibility is high: the clamping and opening device of the clamping jaws in the present invention can realize the clamping and opening of the clamping jaws through a single spring. No power source is required to provide power during the product transfer process, which greatly improves the flexibility of the device.

[0016] 2. Easy operation and maintenance: The various components of the clamping and opening device of the clamping jaws of the present invention are detachably connected, which is easy to operate and more convenient to maintain.

[0017] 3. Simple structure and low cost: Compared with the prior art in which the clamping and opening of the clamping jaws is achieved by combining a pneumatic clamping jaw and a starting valve block, the clamping and opening device of the present invention has a simpler structure and lower cost.

[0018] 4. Long life, safe and reliable: The jaws in the clamping and opening device of the present invention are provided with soft jaws, which can protect the jaws to extend the life of the jaws, protect the product and improve the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a structural schematic diagram of the clamping jaw fixing member in the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the push rod in the present invention.

[0022] The numbers in the figure show:

[0023] 1. Clamp fixing part, 2. Push rod, 3. Spring, 4. Connecting rod seat, 5. Connecting rod, 6. Clamp, 7. Soft clamp, 8. Spring bayonet, 9. Rotating pin, 10. Pin retaining spring, 101. Inner hole, 102. Clamping groove, 201. Clamping point, 202. Clamping head, 203. Pin hole. DETAILED DESCRIPTION

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

[0025] The present invention relates to a device for clamping and opening the clamping jaws with a single spring, such as Figure 1 As shown, the device includes a clamping jaw fixing part 1, a push rod 2, a spring 3, a connecting rod seat 4, a connecting rod 5, a clamping jaw 6, a soft clamping jaw 7, a spring latch 8 and a rotating pin 9.

[0026] like Figure 2 As shown, the clamping jaw fixing member 1 is provided with an inner hole 101 and a clamping slot 102. Figure 3 As shown, the push rod 2 is provided with a clamping point 201 matching the clamping slot 102, a clamping head 202 and a pin hole 203 matching the spring clamping pin 8. The push rod 2 and the clamping point 201 pass through the inner hole 101 and the clamping slot 102 of the clamping jaw fixing member 1, the clamping head 202 of the push rod 2 is installed in the clamping groove of the connecting rod seat 4, and the spring 3 is sleeved at the other end of the push rod 2 and is located between the spring clamping pin 8 and the clamping jaw fixing member 1. The spring 3 in this embodiment is in a compressed state when the clamping jaw 6 is in a clamping and holding state, so that the connecting rod seat 4 can be pressed against the clamping jaw fixing member 1, so that the clamping jaw 6 is kept in a clamped state.

[0027] The clamping jaw 6 is provided with an obtuse L-shaped swing arm, the bending part of the swing arm is connected to the clamping jaw fixing part 1 through the connecting rod 5, and the end of the swing arm is connected to the connecting rod seat 4. The above connections are all realized by a rotating pin 9. The connecting rod 5 can rotate around the central axis of the connection with the clamping jaw fixing part 1; the bending part of the swing arm can rotate around the central axis of the connection with the connecting rod 5; the end of the swing arm can rotate around the central axis of the connection with the connecting rod seat 4.

[0028] A pin retaining spring 10 is provided on each rotating pin 9 to prevent the parts from moving axially.

[0029] The push rod 2 is also provided with a slotted groove for facilitating the rotation of the push rod 2 .

[0030] A soft clamping jaw 7 is provided on the clamping jaw 6. The soft clamping jaw 7 is made of soft materials such as rubber, latex or polyurethane, which can protect the product when clamping the product, and can also reduce the wear of the clamping jaw 6 and extend the life of the device.

[0031] The method of using the device in this embodiment is as follows:

[0032] When the device is in use, only two telescopic rotating cylinders need to be set at the starting point and the end point of the transfer station on the production line. At the starting point, the telescopic rotating cylinder rotates the push rod by a certain angle to align the clamping point 201 with the clamping slot 102, and then the elastic force of the spring 3 can achieve clamping and holding, and then the device for clamping the product is transferred to the station where the product needs to be assembled as a whole. After the device reaches the station, the rotating telescopic cylinder located at the station first pushes the push rod 2 to push the clamping point 201 out of the clamping slot 102, and then rotates a certain angle to achieve the misalignment of the clamping point 201 and the clamping slot 102, the clamping claw 6 opens, and the product enters the production line for overall assembly. Because of the misalignment of the clamping point 201 and the clamping slot 102, the clamping claw in the device is in an open state, and a product transfer is completed.

[0033] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or substitutions within the technical scope disclosed by the present invention, and these modifications or substitutions should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A device for clamping and opening the jaws with a single spring, characterized in that: The device comprises a clamping jaw fixing member (1) provided with an inner hole (101) and a slot (102), a push rod (2) provided with a clamping point (201), a spring (3), a connecting rod seat (4), a connecting rod (5) and a clamping jaw (6); the clamping jaw (6) is connected to the clamping jaw fixing member (1) through the connecting rod (5), and the end of the clamping jaw (6) is connected to the connecting rod seat (4); one end of the push rod (2) is connected to the connecting rod seat (4), and the other end passes through the inner hole (101) and is sleeved with the spring (3); the device is opened and held by the misalignment of the clamping point (201) and the slot (102) after the push rod (2) is extended, and is clamped and held by the alignment of the clamping point (201) and the slot (102) and the elastic force of the spring (3) after the push rod (2) is retracted.

2. A device for clamping and opening the clamping jaws using a single spring according to claim 1, characterized in that: The push rod (2) is provided with a clamping head (202) at one end connected to the connecting rod seat (4); the connecting rod seat (4) is provided with a clamping groove matching the clamping head (202); the push rod (2) and the connecting rod seat (4) are connected via the clamping head (202) and the clamping groove.

3. A device for clamping and opening the clamping jaws using a single spring according to claim 2, characterized in that: The device is provided with a spring latch (8) for fixing the spring; the push rod (2) is provided with a pin hole (203) matching the spring latch (8) at one end on which the spring (3) is sleeved; the spring (3) is sleeved between the spring latch (8) and the clamping jaw fixing member (1).

4. A device for clamping and opening the clamping jaws using a single spring according to claim 3, characterized in that: The push rod (2) is provided with a slot for rotating the push rod (2).

5. A device for clamping and opening the clamping jaws using a single spring according to claim 1, characterized in that: The clamping jaw (6) is provided with an obtuse-angle L-shaped swing arm, the bending part of the swing arm is connected to the clamping jaw fixing member (1) through a connecting rod (5), and the end of the swing arm is connected to the connecting rod seat (4).

6. A device for clamping and opening the clamping jaws using a single spring according to claim 5, characterized in that: The clamping jaw (6) is provided with a soft clamping jaw (7); the soft clamping jaw (7) is made of rubber, latex or polyurethane material.

7. A device for clamping and opening the clamping jaws using a single spring according to claim 5, characterized in that: The swing arm and the connecting rod seat (4), the swing arm and the connecting rod (5), and the connecting rod (5) and the clamping claw fixing member (1) are all connected via a rotating pin (9).

8. A device for clamping and opening the clamping jaws using a single spring according to claim 7, characterized in that: The rotating pin shaft (9) is provided with a pin shaft retaining spring (10).

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