Manipulator compensation device of roll forging machine

Abstract

The utility model belongs to the technical field of pushing and pressing equipment, and particularly relates to a mechanical arm compensation device of a roll forging machine. Comprising a cylinder body, a piston rod and a piston, the piston rod and the piston are arranged in the cylinder body, the piston comprises a piston block, a hooping structure, a first axial fixing structure and a second axial fixing structure, two mounting grooves are formed in the piston rod, and the first axial fixing structure and the second axial fixing structure are arranged in the two mounting grooves respectively. The first axial fixing structure is arranged between the piston block and the piston rod, and the second axial fixing structure is arranged on the piston rod through a hooping structure and is adjacent to the piston block. The first axial fixing structure is used for fixing the piston block in the radial direction, the second axial fixing structure is used for fixing the piston block in the radial direction through the hooping structure, the two fixing structures are used for fixing the piston block in the axial direction, the structure is simple, and the damaged piston block can be rapidly replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary equipment for a rotary forging machine, in particular to a manipulator compensation device for a rotary forging machine. Background Art

[0002] A rotary forging machine can be used for forging forgings, that is, pre-forging the forgings or finally forging and forming the forgings. The rotary forging machine is combined with a manipulator. For example, the manipulator can realize automatic rotary forging, so as to achieve the automation of the rotary forging machine.

[0003] An automatic rotary forging machine needs to use a manipulator to clamp a blank and move it back and forth. The blank is deformed under the action of a die for many times. Due to the speed difference between the rotation speed of the die and the moving speed of the manipulator, a compensation structure is usually required to make up for this speed difference. For example, a rotary forging machine disclosed in CN201921961 uses a compensation oil cylinder to make up for this speed difference.

[0004] However, due to the high working frequency of the oil cylinder piston and the high working environment temperature, it is easy to be damaged. Moreover, usually the piston is an integral body, and a wedge element needs to be arranged between the piston and the piston rod to fix the piston on the piston rod. The wedge element, as a fixing element, is subjected to axial force and radial force and is very easy to be damaged. However, due to its set position, it is very difficult to find its damage degree from the outside. This may lead to the situation that the wedge element is damaged but not replaced in time and continues to be used, resulting in the damage of the piston block. After the piston block is damaged, it needs to be replaced as a whole, which is very time-consuming and affects normal production. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a manipulator compensation device for a rotary forging machine, which fixes the piston block through a tightening structure and a fixing structure, is convenient and reliable in fixing, and is easy to replace when the piston block is damaged.

[0006] The manipulator compensation device for the rotary forging machine includes a cylinder body, a piston rod and a piston arranged in the cylinder body. The characteristics are as follows: the piston includes a piston block, a tightening structure, a first axial fixing structure and a second axial fixing structure. Two installation grooves are arranged on the piston rod. The first axial fixing structure and the second axial fixing structure are respectively arranged in the two installation grooves. The first axial fixing structure is arranged at one end of the piston block, and the second axial fixing structure is arranged at the other end of the piston block. The second axial fixing structure is fixed on the piston rod through the tightening structure, and a space for installing a piston seal ring is formed between the piston block and the second axial fixing structure.

[0007] Preferably, the first axial fixing structure includes a first fixing ring, and the first fixing ring is composed of two half rings butt-jointed.

[0008] Preferably, a first installation cavity and a second installation cavity are provided inside the piston block. The first installation cavity is arranged at one end of the piston block, and the second installation cavity is arranged at the other end of the piston block. The first installation cavity communicates with the second installation cavity. The diameter of the first installation cavity is larger than that of the second installation cavity. The first fixing ring is arranged inside the first installation cavity.

[0009] Preferably, an inner sealing groove for installing a sealing ring is provided on the inner wall of the second installation cavity.

[0010] Preferably, the second axial fixing structure includes a second fixing ring, which is composed of two half rings butt-jointed. The second fixing ring is in contact with the other end of the piston block.

[0011] Preferably, a clamping groove is provided on the second fixing ring, and the clamping structure is arranged in the clamping groove.

[0012] Preferably, the clamping structure is a shaft retaining ring, and the shaft retaining ring is arranged in the clamping groove to press the second fixing ring.

[0013] Preferably, one end of the piston block protrudes outward to form a first boss. An outer sealing groove for installing a sealing ring is provided on the first boss. A space for installing a piston sealing ring is formed between the first boss and the second axial fixing structure.

[0014] Compared with the prior art, the beneficial effects of this technical solution are:

[0015] In the utility model, the piston is set as a split structure. Two installation grooves are provided on the piston rod. The first axial fixing structure and the second axial fixing structure are arranged in the two installation grooves. The piston block is fixed on the piston rod through the first axial fixing structure and the second axial fixing structure. It not only has a simple structure and is convenient for installation, but also can quickly replace the damaged piston block and piston sealing ring.

[0016] The first axial fixing structure is arranged between the piston rod and the piston block. The piston block is sleeved on the outside of the first axial fixing structure. The piston block radially fixes the first axial fixing structure, with a simpler structure and more reliable fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a manipulator compensation device of a roll forging machine according to the utility model.

[0018] Figure 2 is Figure 1 a partial enlarged view of part A in

[0019] Figure 3 a schematic structural diagram of the piston block.

[0020] Figure 4 is a schematic cross-sectional view of the second fixing ring.

[0021] Wherein: 1. Cylinder block; 2. Piston rod; 3. Piston block; 4. Second fixing ring; 5. First installation cavity; 6. Second installation cavity; 7. Inner sealing groove; 8. Outer sealing groove; 9. First boss; 10. Second boss; 11. Card slot; 12. First fixing ring; 13. Shaft retaining ring; 14. Rotary forging machine body; 15. Manipulator. Specific embodiments

[0022] Figures 1 to 4 is the best embodiment of the present utility model. The following will further describe the present utility model in conjunction with the attached Figures 1 to 4 drawings.

[0023] Referring to Figure 1 , the manipulator 15 is horizontally reciprocatingly arranged on the rotary forging machine body 14 for clamping the blank to reciprocate, so as to realize the repeated rotary forging of the blank by the die on the rotary forging machine body 14. The manipulator compensation device of this rotary forging machine is arranged at one end of the manipulator 15 away from the die to match the rolling speed of the die of the rotary forging machine body 14.

[0024] Referring to Figures 2 to 4 , specifically, the manipulator compensation device of this rotary forging machine includes a cylinder block 1, a piston rod 2 and a piston. The piston includes a piston block 3, a tightening structure and a fixing device. The piston block 3 is installed on the piston rod 2 through the fixing device and is arranged in the cylinder block 1. The fixing device includes a first axial fixing structure and a second axial fixing structure. There are two installation grooves on the piston rod 2. The first axial fixing structure and the second axial fixing structure are respectively arranged in the two installation grooves. The piston block 3 is sleeved on the first axial fixing structure, and the second axial fixing structure is arranged on the piston rod 2 through the tightening structure.

[0025] The middle of the piston block 3 is hollow to form a first installation cavity 5 and a second installation cavity 6. The first installation cavity 5 is arranged at one end of the piston block 3, and the second installation cavity 6 is arranged at the other end of the piston block 3. The diameter of the second installation cavity 6 is basically equal to the diameter of the piston rod 2. The first installation cavity 5 communicates with the second installation cavity 6. The diameter of the first installation cavity 5 is larger than the diameter of the second installation cavity 6. The piston rod 2 passes through the first installation cavity 5 and the second installation cavity 6.

[0026] In this embodiment, the first axial fixing structure is the first fixing ring 12, the second axial fixing structure is the second fixing ring 4, and the tightening structure is the shaft retaining ring 13. The first fixing ring 12 and the second fixing ring 4 are respectively formed by butting two half rings into one body and installed in the installation groove. The first installation cavity 5 and the installation groove form an installation cavity for installing the first fixing ring 12. The piston block 3 presses the first fixing ring 12 to realize the radial fixing of the first fixing ring 12 so that it cannot move.

[0027] One end of the piston block 3 protrudes outward to form a first boss 9, and two outer sealing grooves 8 for installing sealing rings are provided on the first boss 9. Two inner sealing grooves 7 for installing sealing rings are provided on the inner wall of the piston block 3. Sealing rings are provided between the piston block 3 and the inner wall of the cylinder block 1 and the piston rod 2 for sealing. A space for installing a piston sealing ring is formed between the first boss 9 and the second fixing ring 4.

[0028] One end of the outer side of the second fixing ring 4 protrudes outward to form a second boss 10, and a clamping groove 11 is provided along the outer circumference of the other end. The shaft retaining ring 13 is arranged in the clamping groove 11 to press and fix the second fixing ring 4 on the piston rod 2 so that it cannot move, and the first fixing ring 12 and the second fixing ring 4 fix the axial position of the piston block 3.

[0029] The installation process is as follows: Install the two half-ring first fixing rings 12 in an installation groove of the piston rod 2. After installing the sealing ring in the outer sealing groove 8 of the piston block 3, install the sealing ring in the inner sealing groove 7 of the piston block 3, and sleeved on the piston rod 2 until the first fixing ring 12 is in the first installation cavity 5. The first fixing ring 12 clamps one side of the piston block 3, install the piston sealing ring, and then install the two half-ring second fixing rings 4 in another installation groove of the piston rod 2, clamp the piston block 3 between the first fixing ring 12 and the second fixing ring 4, sleeved the shaft retaining ring 13 in the clamping groove 11 to fix the second fixing ring 4, and extend the piston rod 2 and the piston into the cylinder block 1 together to complete the installation. When the piston needs to be replaced, only need to remove the shaft retaining ring 13 and the second fixing ring 4, and the operation is simple and fast.

[0030] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A manipulator compensation device for a roll forging machine, comprising a cylinder body (1) and a piston rod (2) and a piston arranged in the cylinder body (1), characterized in that: The piston comprises a piston block (3), a clamping structure, a first axial fixing structure and a second axial fixing structure; two mounting grooves are provided on the piston rod (2); the first axial fixing structure and the second axial fixing structure are respectively arranged in the two mounting grooves; the first axial fixing structure is arranged at one end of the piston block (3); the second axial fixing structure is arranged at the other end of the piston block (3); the second axial fixing structure is fixed to the piston rod (2) via the clamping structure; and a space for mounting a piston sealing ring is formed between the piston block (3) and the second axial fixing structure.

2. The manipulator compensation device of a roll forging machine according to claim 1, characterized in that: The first axial fixing structure comprises a first fixing ring (12), wherein the first fixing ring (12) is composed of two half rings butted together.

3. The manipulator compensation device of a roll forging machine according to claim 2, characterized in that: A first mounting cavity (5) and a second mounting cavity (6) are provided inside the piston block (3); the first mounting cavity (5) is provided at one end of the piston block (3); the second mounting cavity (6) is provided at the other end of the piston block (3); the first mounting cavity (5) is connected to the second mounting cavity (6); the diameter of the first mounting cavity (5) is larger than the diameter of the second mounting cavity (6); and the first fixing ring (12) is provided inside the first mounting cavity (5).

4. The manipulator compensation device of a roll forging machine according to claim 3 is characterized in that: An inner sealing groove (7) for mounting a sealing ring is provided on the inner wall of the second mounting cavity (6).

5. The manipulator compensation device of a roll forging machine according to claim 1, characterized in that: The second axial fixing structure comprises a second fixing ring (4), the second fixing ring (4) being composed of two half rings butted together, and the second fixing ring (4) being in contact with the other end of the piston block (3).

6. The manipulator compensation device of a roll forging machine according to claim 5, characterized in that: The second fixing ring (4) is provided with a clamping groove (11), and the clamping structure is arranged in the clamping groove (11).

7. The manipulator compensation device of a roll forging machine according to claim 6, characterized in that: The clamping structure is a shaft retaining ring (13), and the shaft retaining ring (13) is arranged in the clamping groove (11) to press the second fixing ring (4).

8. The manipulator compensation device of a roll forging machine according to claim 1, characterized in that: One end of the piston block (3) protrudes outward to form a first boss (9), an outer sealing groove (8) for mounting a sealing ring is provided on the first boss (9), and a space for mounting a piston sealing ring is formed between the first boss (9) and the second axial fixing structure.

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