CN218341353U

CN218341353U - Integrated heavy double-arm clamp

Info

Publication number: CN218341353U
Application number: CN202221888301.9U
Authority: CN
Inventors: 朱向英
Original assignee: Shanghai Daman Mechanical And Electrical Equipment Co ltd
Current assignee: Shanghai Daman Mechanical And Electrical Equipment Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2023-01-20
Anticipated expiration: 2032-07-22

Abstract

The utility model relates to an integrated heavy both arms binding clasp, including bottom plate and the housing above, set up actuating mechanism and by the clamping mechanism of actuating mechanism drive in the housing, actuating mechanism includes piston mechanism and the forked piece of being connected with piston mechanism, the forked piece is connected through the short pin axle with connecting block one end, connecting block relative forked piece one end is connected through the short pin axle with clamping mechanism; clamping mechanism includes the arm lock of two relative settings, and it has following advantage: the clamping torque is large, and larger clamping force can be provided compared with the same type of products; the precision is high, the clamping and positioning precision of the tool on the workpiece is ensured, and the precision of the welding process is greatly ensured; the self-locking function effectively prevents the failure of the tool under the conditions of power failure and gas failure.

Description

Integrated heavy double-arm clamp

Technical Field

The utility model relates to a car is processingequipment field for the welding line, specifically is the heavy both arms binding clasp of integrated form.

Background

The welding line of the automobile body, which is one of four production processes in automobile production, is also a development process from low efficiency to high efficiency flexible production line. In order to improve the quality and capacity of domestic automobiles, more strict requirements on the production process are required, and higher requirements on tool fixtures in automobile production are also required.

The clamping device commonly used in the welding fixture is used for clamping automobile sheet metal parts and assembly parts through the clamping device to convey and fix automobile body parts, and then carrying out the next welding work of the automobile body parts. The welding precision, the welding quality and the welding efficiency of the welding workpiece are ensured by improving the automation degree.

The grippers of the factory welding lines of the vehicles currently used in the largest quantity have the following disadvantages:

1. the size is large, and the overall shape space size of the clamp and the gripper is increased.

2. The precision is poor, most of the common piston type linear cylinders are fastened by external mechanisms, and the precision is difficult to guarantee.

3. The automatic clamping device has no self-locking function, and prevents the workpiece from being separated from the clamp or preventing the gripper tool from falling or losing deformation under the unexpected condition of power failure and air failure.

4. The clamping torque is small, the torque of the currently adopted clamping device is small, and the heavy-load clamping requirement cannot be met.

5. The interference is easy, the size and the clamping points of the clamp product are distributed, and the interference problem caused by the welding spot position, the workpiece taking and placing and the tool matching is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an integrated form heavy both arms binding clasp is provided to solve the defect that exists among the prior art.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

the integrated heavy double-arm clamp comprises a bottom plate and a housing above the bottom plate, wherein a driving mechanism and a clamping mechanism driven by the driving mechanism are arranged in the housing, the driving mechanism comprises a piston mechanism and a fork-shaped part connected with the piston mechanism, the fork-shaped part is connected with one end of a connecting block through a short pin shaft, and one end of the connecting block, opposite to the fork-shaped part, is connected with the clamping mechanism through a short pin shaft; the clamping mechanism comprises two oppositely arranged clamping arms, and the upper ends of the clamping arms are rotatably connected with the side plates of the housing through rotating shafts; the lower end of the clamping arm is connected with the connecting block through a short pin shaft.

Furthermore, the piston mechanism comprises an upper cover, a lower cover and a cylinder body positioned between the upper cover and the lower cover, a piston is arranged in the cylinder body, and a piston rod penetrates through the upper cover and then is connected with the piston;

further, the fork-shaped piece and the piston rod are fixedly connected together through threads and a positioning pin;

furthermore, the outer side of the connecting block is in contact with a reinforcing steel sheet, one side of the reinforcing steel sheet in contact with the connecting block is higher than the other side of the reinforcing steel sheet, and the other side of the reinforcing steel sheet is fixedly arranged on the bottom plate;

furthermore, an upper induction block and a lower induction block of the sensor are respectively arranged at two ends of the movable track of the short pin shaft, and are respectively used for sensing two position signals of clamping and releasing of the clamping arm when the clamping mechanism works and transmitting the signals to the control system;

the utility model has the advantages that: the clamping torque is large, and larger clamping force can be provided compared with the same type of products; the precision is high, the clamping and positioning precision of the tool on the workpiece is ensured, and the precision of the welding process is greatly ensured; the self-locking function effectively prevents the failure of the tool under the conditions of power failure and gas failure.

Drawings

FIG. 1 is a schematic view of a cross-sectional mechanism of the present invention;

FIG. 2 is a schematic view of the overall mechanism of the present invention;

Detailed Description

The principles and features of the present invention will be described with reference to the drawings, which are provided for illustration only and are not intended to limit the scope of the invention.

The integrated heavy double-arm clamp comprises a bottom plate 8 and a housing 6 above the bottom plate, wherein a driving mechanism and a clamping mechanism driven by the driving mechanism are arranged in the housing, the driving mechanism comprises a piston mechanism and a fork-shaped part 7 connected with the piston mechanism, the fork-shaped part is connected with one end of a connecting block 11 through a short pin shaft 12, and one end of the connecting block 11, opposite to the fork-shaped part 7, is connected with the clamping mechanism through a short pin shaft; the clamping mechanism comprises two oppositely arranged clamping arms 9, and the upper ends of the clamping arms are rotatably connected with a side plate 15 of the housing through a rotating shaft 10; the lower end of the clamping arm is connected with the connecting block through a short pin shaft;

specifically, the piston mechanism comprises an upper cover 4, a lower cover 1 and a cylinder body 2 positioned between the upper cover and the lower cover, a piston 3 is arranged in the cylinder body, and a piston rod 5 penetrates through the upper cover and then is connected with the piston;

the fork-shaped part 7 and the piston rod 5 are fixedly connected together through threads and a positioning pin;

the utility model discloses at concrete during operation, as shown in fig. 1-2, utilize piston mechanism reciprocating motion to drive clamping mechanism and press from both sides tightly and loosen the operation, the gas pocket through upper cover and lower cover admits air the exhaust promptly and makes piston reciprocating motion from top to bottom, and the piston passes through piston rod and forked piece reciprocating motion from top to bottom, makes the arm lock sway around the axis of rotation through the connecting block, realizes that outside double-layered arm presss from both sides tightly, the function of opening, outside arm lock utilizes toggle design principle just can produce very big clamp force with relatively less working air pressure.

The shell is arranged, so that the interior of the clamping device is in a closed space, welding slag and dust pollution can be effectively reduced, and the service life is prolonged. The bottom plate is made of high-quality carbon mechanism steel, so that the system has good stability in heavy-load operation.

As a further improvement of the above technical solution, the outer side of the connecting block 11 is in contact with a reinforcing steel sheet 13, and one side of the reinforcing steel sheet in contact with the connecting block is higher than the other side of the reinforcing steel sheet, and the other side of the reinforcing steel sheet is fixedly arranged on the bottom plate 8;

through the arrangement, under the clamping state of the clamping arm when the clamping device works, if the cylinder is in a gas failure or power failure, namely when the system is in a voltage failure, the whole rocker slider system cannot move automatically under the action of friction force generated by the reinforced steel sheet made of special materials and the connecting block, the self-locking of the system is realized, the clamping arm can keep the clamping state and cannot unlock by itself, and the clamping function is not influenced by the gas failure and power failure.

As a further improvement of the above technical solution, the two ends of the moving track of the short pin shaft are respectively provided with an upper sensing block and a lower sensing block of the sensor 14, which are respectively used for sensing two position signals of clamping and releasing of the clamping arm when the clamping mechanism works, and transmitting the signals to the control system;

when the clamping device works, the sensor can transmit two position states of clamping and opening of the clamping arm of the clamping device to the whole control system in an electric signal mode, the short pin shaft is in contact with the sensing block on the sensor when the clamping arm is clamped, the clamping signal is received by the whole control system of the sensor, the short pin shaft is in contact with the lower sensing block of the sensor when the clamping arm is opened, the opening signal is received by the sensor system, and then the clamping device and other mechanisms can be matched to realize automatic processing of the whole device of the welding line of the automobile body through the control system.

Compared with the prior art, the utility model has the advantages as follows:

1. the clamping moment is large. Can provide bigger clamping force compared with the same type of products.

2. The precision is high. The clamping and positioning precision of the tool to the workpiece is ensured, and the precision of the welding process is greatly ensured.

3. Self-locking function. Effectively prevent the frock inefficacy under outage and the outage condition.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. Heavy both arms binding clasp of integrated form, its characterized in that: the clamping device comprises a bottom plate and a housing arranged above the bottom plate, wherein a driving mechanism and a clamping mechanism driven by the driving mechanism are arranged in the housing, the driving mechanism comprises a piston mechanism and a fork-shaped part connected with the piston mechanism, the fork-shaped part is connected with one end of a connecting block through a short pin shaft, and one end of the connecting block, opposite to the fork-shaped part, is connected with the clamping mechanism through a short pin shaft; the clamping mechanism comprises two oppositely arranged clamping arms, and the upper ends of the clamping arms are rotatably connected with the side plates of the housing through rotating shafts; the lower end of the clamping arm is connected with the connecting block through a short pin shaft.

2. The integrated heavy dual-arm clamp of claim 1, wherein: the piston mechanism comprises an upper cover, a lower cover and a cylinder body located between the upper cover and the lower cover, a piston is arranged in the cylinder body, and a piston rod penetrates through the upper cover and then is connected with the piston.

3. The integrated heavy dual-arm clamp according to claim 2, wherein: the fork-shaped piece and the piston rod are fixedly connected together through threads and a positioning pin.

4. The integrated heavy dual-arm clamp according to claim 3, wherein: the connecting block outside contacts with the enhancement steel sheet, just one side of strengthening the steel sheet and connecting block contact is higher than the opposite side of strengthening the steel sheet, and the opposite side of strengthening the steel sheet is fixed to be set up on the bottom plate.

5. The integrated heavy dual-arm clamp according to claim 4, wherein: and the two ends of the movable track of the short pin shaft are respectively provided with an upper induction block and a lower induction block of the sensor, and the upper induction block and the lower induction block are respectively used for sensing two position signals of clamping and loosening of the clamping arm when the clamping mechanism works and transmitting the signals to the control system.