A Design of Sucker-Type Structure Clamp

Abstract

The present invention discloses a design of a suction cup type structure clamp, which is used to solve the problems of clamping and deformation of thin hot parts during the forging process. Since the red-hot thin forgings in forging have no magnetism and cannot be sucked by a magnetic clamp, the present invention designs a suction cup type structure clamp to clamp and forge products of thin hot parts with complex shapes. By using the suction cup type structure clamp for clamping, it is ensured that the robot clamp can accurately grasp and place the thin hot parts on the mold. The main principle is that the suction cup type structure clamp first sucks the part with a suction cup having the same shape as the hot forging in the middle, and at the same time prevents the hot forging from deforming. Then, the clamps on both sides move parallel to the middle to clamp both sides of the hot forging, and at the same time prevent air leakage of the suction cup and dropping of the parts. At the next station, the clamps on both sides of the clamp release the hot forging, and the suction cup is inflated to put down the hot forging, completing a clamping action.

Description

Technical Field

[0001] The present invention discloses a suction cup type structure clamp for picking up and placing hot thin forgings, ensuring that the forgings do not deform and can accurately place the forgings at the next working station, and is applied to the structural design of picking up hot thin forgings in the forging field. Background Art

[0002] In automated forging production, a robot clamp can reduce the labor intensity of workers and accurately grasp and place forging parts on a die according to programmed coordinates, which plays an important role in the quality of forging parts. However, for existing robot clamps, when picking up hot thin parts, not only are the hot thin parts prone to deformation, but after the parts are deformed, it is difficult for the robot clamp to accurately grasp and place them on the die at the next working station, easily causing part displacement and inaccurate positioning, and it is easy to produce defective products during part forging.

[0003] Since the hot thin forgings in forging do not have magnetism and cannot be picked up by a magnetic clamp, there is currently a lack of a device for picking up hot thin forgings in this technical field. Summary of the Invention

[0004] To solve this problem, the present invention designs a suction cup type structure clamp for picking up hot thin forgings with complex shapes. By using the suction cup type structure clamp for picking up, it ensures that the robot clamp can accurately grasp and place hot thin parts on the die. The principle is that the suction cup type structure clamp first uses a suction cup in the middle with the same shape as the hot forging to suck the part, and at the same time prevents the hot forging from deforming. Then the clamps on both sides move parallel to the middle to clamp both sides of the hot forging, and at the same time prevent air leakage of the suction cup and dropping of the part. At the next working station, the clamps on both sides of the clamp release the hot forging, and the suction cup is inflated to put down the hot forging, completing a picking up action.

[0005] A design of a suction cup type structure clamp includes a connecting flange assembly, a suction cup upper hanging frame, a clamp assembly, a suction cup and a sealing plate. The characteristics are that the suction cup upper hanging frame is connected to the left flange of the connecting flange assembly by screws; four suction cup brackets and angle compensators are installed at the four corners of the suction cup upper hanging frame, and the suction cup upper hanging frame is connected and fixed to the sealing plate through bolts; the clamp assembly and the suction cup upper hanging frame are installed on the same side of the sealing plate; the suction cup is pressed on the other side of the sealing plate.

[0006] Four suction cup brackets and angle compensators are installed at the four corners of the hanging frame above the suction cup. When the suction cup picks up parts, the angle compensator adjusts the angle to make the suction cup closely fit the forging, increasing the suction force and reducing air leakage. The sealing plate seals and fixes the suction cup, and at the same time fixes the hanging frame above the suction cup and the clamp assembly. The positions of the bolt holes for installing the four angle compensators on the sealing plate are h3 = 174 mm, h2 = 25 mm, h1 = 25 mm, and h6 = 230 mm. The positions of the bolt holes for installing the clamp assembly are h7 = 55 mm and h8 = 220 mm. The positions of the screw holes for installing the suction cup head are h4 = 30 mm evenly distributed and h5 = 22 mm. There are 6 bolt holes for installing the clamp assembly on the sealing plate, three on each side, symmetrically arranged left and right with the middle two as the center line. The opening and clamping of the front clamp block and the rear clamp block of the clamp assembly depend on the rotation direction of the gear that drives the rack movement. The two racks of the clamp assembly are horizontally arranged with a distance B3 = 56 mm. The front clamp block and the rear clamp block are respectively fixed on the two racks outside the clamp frame. The front clamp block and the rear clamp block of the clamp assembly play an auxiliary role when picking up thin hot forgings and serve as a safety protection when the suction cup leaks air. A swing cylinder is designed in the middle of the clamp assembly, and the rotation angle is determined by adjusting the positioning rod. Description of the Drawings

[0007] Figure 1 It is the general assembly drawing of the suction cup type structure clamp installed on the robot

[0008] Figure 2 It is the front view of the suction cup type structure clamp

[0009] Figure 3 It is the top view of the suction cup type structure clamp

[0010] Figure 4 It is the front view of the connecting flange assembly

[0011] Figure 5 It is the top view of the connecting flange assembly

[0012] Figure 6 It is the front view of the hanging frame above the suction cup

[0013] Figure 7 It is the bottom view of the clamp assembly

[0014] Figure 8 It is the front view of the clamp assembly

[0015] Figure 9 It is the front view of the suction cup

[0016] Figure 10 It is the bottom view of the suction cup Detailed Implementation Manner

[0017] Figure 1It is the general assembly drawing of the sucker - type structure clamp installed on the robot, which includes three major parts: the duplex assembly 1, the robot body 14, and the sucker - type structure clamp 2. The sucker - type structure clamp 2 is connected to the robot 14 through a flange. The duplex assembly 1 is installed at the lower part of the robot 14. Its functions are to open and close the intake pressure, the output pressure within the pressure regulation range is infinitely adjustable, filter and lubricate the compressed air, electronically control the pressure monitoring, and the switch pressure is adjustable.

[0018] Figure 2 It is the front view of the sucker - type structure clamp, which is mainly composed of the connecting flange assembly 3, the sucker hanging frame 4, the clamp assembly 5, and the sucker 6. The clamp assembly 5 includes the front clamp block 10a and the rear clamp block 10b, and its function is to clamp the processed parts front and back to prevent the vacuum - sucked parts from falling due to air leakage.

[0019] Figure 3 It is the top view of the sucker - type structure clamp. There is a flange at each of the left and right ends of the connecting flange assembly 3 in the sucker - type structure clamp. The left - hand end is the left - hand flange 3a, which is connected to the sucker hanging frame 4, and the right - hand end is the right - hand flange 3b, which is connected to the robot. The front clamp block 10a and the rear clamp block 10b of the clamp assembly 5 are installed on the sucker hanging frame 4. The travel switch 11 is installed on the sucker hanging frame 4. The pneumatic quick - connect fitting 15 is installed on the connecting flange assembly 3. The label 16 is the electrical wire quick - connect fitting. The travel switch 11, the pneumatic quick - connect fitting 15, and the electrical wire quick - connect fitting 16 are used to connect the travel switch 11 and the main control box. The pneumatic quick - connect fitting 15 is the air pipe connecting the clamp cylinder and the air source.

[0020] Figure 4 It is the front view of the connecting flange assembly, including the connecting flange assembly 3, the left - hand flange 3a, the right - hand flange 3b, the pneumatic quick - connect fitting 15, and the electrical wire quick - connect fitting 16.

[0021] Figure 5 It is the top view of the connecting flange assembly, including the connecting flange assembly 3, the left - hand flange 3a, the right - hand flange 3b, the pneumatic quick - connect fitting 15, and the electrical wire quick - connect fitting 16. The right - hand flange 3b of the connecting flange assembly 3 is used to install the entire clamp system on the sixth axis of the robot 14. There is a pneumatic quick - connect fitting 15 for quickly replacing different part clamp heads on the side, and a quick - connect fitting 16 connected to the travel switch 11. The left - hand flange 3a is used to connect the sucker hanging frame 4.

[0022] Figure 6 It is the front view of the sucker hanging frame. The label 4a is the sucker support, and the label 4b is the angle compensator. There are sucker supports 4a at the four corners of the sucker hanging frame, which are connected to the angle compensators 4b. When the sucker sucks the parts, it can automatically adjust the angle to make the sucker close to the parts tightly, reduce air leakage, and increase the force for sucking the parts.

[0023] Figure 7It is a bottom view of the clamp assembly. The two racks of the clamp assembly are horizontally arranged with a distance B3 = 56 mm. The front clamp block 10a and the rear clamp block 10b are respectively fixed on the two racks outside the clamp frame.

[0024] Figure 8 It is a front view of the clamp assembly. The label 8 is for the gear, the label 9 is for the rack, and the label 11 is for the travel switch. The swing cylinder 7 is located in the middle of the clamp assembly. The swing cylinder 7 can adjust the internal positioning rod, thereby determining the rotation angle. A gear 8 is installed on the swing cylinder shaft. The rotation of the gear 8 drives the two parallel racks 9 on both sides. At the ends of the racks 9, there are clamp blocks 10a and 10b following the shapes of both sides of the part, and the part is clamped by moving parallel. The travel switch 11 detects the position of the swing cylinder 7 and transmits a signal to the total control.

[0025] Figure 9 It is a front view of the suction cup, which is composed of a sealing plate 12 and a suction cup head 13, and the two are connected by screws around. The function is that there is a cavity behind the suction cup head 13, which is tightly connected to the back through the sealing plate 12 to form a working space for vacuum pumping. The positions of the screw holes for installing the suction cup head are evenly distributed around with h4 = 30 mm, and h5 = 22 mm to ensure good sealing.

[0026] Figure 10 It is a bottom view of the suction cup. The positions of the bolt holes for installing the four angle compensators on the sealing plate are h3 = 174 mm, h2 = 25 mm, h1 = 25 mm, and h6 = 230 mm. The positions of the bolt holes for installing the clamp assembly are h7 = 55 mm and h8 = 220 mm. There are 2 positioning surfaces on the sealing plate 12 and the positioning block 13a, and a positioning surface 13b on the side of the suction cup. There are about 200 holes drilled on the suction cup head surface of the suction cup head 13. It is calculated that the suction force is 1.5 to 2 times the weight of the thin part. When actually sucking the part, although there is air leakage, only the part is sucked, and it is okay without fixing it with clamps on both sides. A positioning surface 13a and a positioning surface 13b with a 2 mm gap from the end surface of the part are machined on one side and one corner of the suction cup 13. It is used to position the three-dimensional coordinates of the robot connected to the clamp when initially adjusting the suction cup type clamp to suck the thin part. The height H of the suction cup 13 is designed according to different parts. The suction cup is composed of a sealing plate 12 and a suction cup head 13 connected to each other by screws, and is used to suck thin hot parts. The surface of the suction cup head 13 fits more than 90% with the upper surface of the sucked part. The negative pressure of the suction cup is generated by a vacuum generator (located in the air control valve box) and is connected to the back cavity of the suction cup head through a side pipeline. The vacuum generator can be driven by the air source to generate a negative pressure of 0.8 bar.

[0027] The above are only the preferred embodiments of the present invention. Any changes made according to the claims of the present invention shall fall within the scope covered by the present invention.

Claims

1. A suction cup type structure clamp for clamping thin hot forging parts, comprising a connecting flange assembly, a suction cup hanging frame, a clamp assembly and a suction cup. The suction cup is composed of a sealing plate and a suction cup head. Holes are drilled on the surface of the suction cup head, and the surface of the suction cup head fits more than 90% with the upper surface of the sucked part. It is characterized in that The suction cup hanging frame is connected to the left flange of the connecting flange assembly by screws; 4 suction cup brackets and angle compensators are installed at the four corners of the suction cup hanging frame, and the suction cup hanging frame is fixedly connected to the sealing plate through bolts and the angle compensator; the clamp assembly and the suction cup hanging frame are installed on the same side of the sealing plate; the suction cup head is installed on the other side of the sealing plate. A positioning surface with a 2 mm gap from the surface of the part end is machined on one side and one corner of the suction cup.

2. The suction cup type structure clamp according to claim 1, It is characterized in that Six bolt holes for installing the clamp assembly are arranged on the sealing plate, with three on each side centered on the middle two and symmetric left and right.

3. The suction cup type structure clamp according to claim 1, It is characterized in that The opening and clamping of the front clamp block and the rear clamp block of the clamp assembly are driven by the rotation of a gear that moves a rack.

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