T-shaped rod connecting device of forging press

Abstract

The utility model discloses a T-shaped rod connecting device of a forging press, which belongs to the technical field of forging equipment and comprises a piston which is positioned in an oil cylinder body and can slide up and down, a vertical clamping shaft penetrates through the interior of the piston, and a semi-ring sleeved on the clamping shaft is arranged above the piston. A transition sleeve arranged on the clamping shaft in a sleeving mode is arranged between the semi-ring and the top of the piston, the semi-ring is connected with the transition sleeve through a plurality of upper bolts, and the transition sleeve is connected with the piston through a plurality of lower bolts. The tensile strength of the lower bolt is at least two times that of the upper bolt, and meanwhile the diameter of the lower bolt is the same as that of the upper bolt. Due to the fact that the transition sleeve is arranged between the semi-ring and the piston, maintenance difficulty is reduced, maintenance time is shortened, and normal production and operation are prevented from being greatly influenced.

Description

Technical Field

[0001] The utility model belongs to the technical field of forging equipment, and in particular relates to a T-bar connecting device of a forging press. Background Art

[0002] Existing top-pressure forging presses are mostly three-beam, two-column structures. The press frame, consisting of the upper beam, lower beam, and columns, reciprocates up and down along a guide mechanism attached to the fixed beam to perform the forging process. The upper anvil pad and upper anvil are mounted at the center of the lower surface of the upper beam. Due to the demands of the forging process, especially when performing processes such as upsetting, lengthening, rounding, bending, and straightening, frequent replacement of the upper anvil is often necessary.

[0003] When replacing the upper anvil, the T-rod of the locking mechanism moves downward, rotates after it is in place, and lifts the movable crossbeam to disengage the upper anvil. The upper anvil to be replaced is moved under the movable crossbeam, and the movable crossbeam falls, allowing the T-rod to enter the corresponding groove of the upper anvil. During this process, if the upper anvil has an alignment deviation, the upper anvil will push up the T-rod, and the upward-moving T-rod will push up the locking cylinder piston, causing the locking cylinder piston to disengage from the half ring, thereby damaging the bottom hole thread of the locking cylinder piston. If repairs are to be carried out at this time, due to the limitations of the locking cylinder structure and installation space, the locking cylinder needs to be dismantled as a whole and transported to the maintenance area for disassembly and replacement of the piston. Maintenance is difficult and time-consuming, and has a great impact on normal production operations. Utility Model Content

[0004] In order to solve the problem in the prior art that the locking cylinder needs to be dismantled as a whole after the thread of the bottom hole of the piston is damaged, the utility model provides a T-bar connection device for a forging press. Through the provided transition sleeve, when the upper anvil is replaced and there is a deviation in the alignment of the upper anvil, the upper anvil pushes the clamping shaft upward, and the upward moving clamping shaft will push the half ring upward. At this time, the half ring is separated from the transition sleeve, and only the damaged transition sleeve needs to be replaced.

[0005] The technical solution adopted by the T-bar connecting device of the forging press in the utility model is:

[0006] A T-bar connection device for a forging press includes a piston located in a cylinder body and capable of sliding up and down, a vertical clamping shaft passing through the interior of the piston, a half ring sleeved on the clamping shaft provided above the piston, a transition sleeve sleeved on the clamping shaft provided between the half ring and the top of the piston, the half ring connected to the transition sleeve via a plurality of upper bolts, and the transition sleeve connected to the piston via a plurality of lower bolts; wherein the tensile strength of the lower bolts should be at least twice that of the upper bolts, and the diameter of the lower bolts is the same as that of the upper bolts.

[0007] A further improvement of the technical solution of the present utility model is that the tensile strength of the material of the transition sleeve is lower than the tensile strength of the material of the piston, the half ring and the cylinder body.

[0008] A further improvement of the technical solution of the present invention is that a plurality of semi-ring connecting holes for installing upper bolts are evenly opened on the semi-ring in the circumferential direction, a plurality of upper connecting holes are evenly opened on the transition sleeve in the circumferential direction, and the diameter of each upper connecting hole is the same as the diameter of the semi-ring connecting hole.

[0009] A further improvement of the above technical solution of the present invention is that: a plurality of piston connecting holes for installing lower bolts are evenly opened circumferentially on the top of the piston, and a plurality of lower connecting holes corresponding to the plurality of piston connecting holes are evenly opened circumferentially on the transition sleeve, and the diameter of each lower connecting hole is the same as the diameter of the piston connecting hole.

[0010] A further improvement of the above technical solution of the present invention is that the number of the multiple upper connection holes and the number of the multiple lower connection holes are the same, and the upper connection holes and the lower connection holes are arranged alternately in sequence.

[0011] A further improvement of the technical solution of the present utility model is that the gear housing is connected to the top of the oil cylinder body through a plunger flange, an upper cover is provided above the gear housing, and a pressure cover, a disc spring upper pressure cover, a disc spring, a disc spring lower pressure cover, a clamping shaft guide sleeve and a guide sleeve pressure cover are provided in sequence below the oil cylinder body.

[0012] A further improvement of the above technical solution of the present invention is that the bottom end of the clamping shaft extends downward to the bottom of the oil cylinder body and is fixedly connected to a rectangular block, and an upper pad sleeved on the clamping shaft is provided above the rectangular block.

[0013] A further improvement of the above technical solution of the present invention is that a groove matching with the rectangular block is provided at the top center of the upper anvil.

[0014] Due to the adoption of the above technical solution, the technical advancements achieved by the present invention include:

[0015] Using traditional technology, the half ring and the piston are directly connected together by bolts. When the clamping shaft is pushed upward, the clamping shaft drives the half ring to move upward. At this time, the half ring, bolts and piston are separated, causing the bottom hole thread of the piston to be damaged. When replacing the piston, the disc spring upper cover, pressure cover, cylinder body, gear housing and upper cover need to be removed, resulting in a large number of parts that need to be disassembled, making it difficult to replace the piston.

[0016] When the technology of the present invention is adopted, a transition sleeve is provided between the half ring and the piston, and the tensile strength of the material of the transition sleeve is lower than the tensile strength of the material of the piston, the half ring and the cylinder body, and the tensile strength of the lower bolt should be at least twice the tensile strength of the upper bolt. Therefore, when the clamping shaft is pushed upward, the clamping shaft drives the half ring to move upward. When the half ring moves upward, the transition sleeve or the upper bolt will be broken, causing the transition sleeve to be damaged.

[0017] When replacing the transition sleeve, only the gear housing and the upper cover need to be removed. Compared with the traditional technology, the utility model requires fewer parts to be disassembled, thereby reducing the difficulty of maintenance, shortening the maintenance time, and preventing a major impact on normal production operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a conventional T-bar connection technology for a forging press of the present invention;

[0019] Figure 2 This is a schematic structural diagram of a T-bar connecting device for a forging press according to the present invention;

[0020] Figure 3 This is a structural schematic diagram of a transition sleeve of a T-bar connecting device of a forging press according to the present invention;

[0021] Figure 4 The utility model is a T-bar connecting device of a forging press Figure 3 Schematic diagram of the cross-sectional structure of AA.

[0022] In the accompanying drawings: 1. Cylinder body; 2. Piston; 3. Clamping shaft; 4. Half ring;

[0023] 5. Transition sleeve; 51. Upper bolt; 52. Upper connecting hole; 53. Lower connecting hole;

[0024] 6. Plunger flange; 7. Gear housing; 8. Upper cover; 9. Pressure cover; 10. Disc spring upper pressure cover;

[0025] 11. Disc spring; 12. Disc spring lower cover; 13. Clamping shaft guide sleeve; 14. Guide sleeve cover; 15. Rectangular block; 16. Upper pad; 17. Upper anvil; 18. Groove. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. In the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concept of the present invention.

[0027] First reference Figure 2The utility model includes a cylinder body 1, the top of the cylinder body 1 is connected with a plunger pressure flange 6, a gear housing 7 and an upper cover 8 in sequence, and the bottom of the cylinder body 1 is connected with a pressure cover 9, a disc spring upper pressure cover 10, a disc spring 11, a disc spring lower pressure cover 12, a clamping shaft guide sleeve 13 and a guide sleeve pressure cover 14 in sequence, and a connected cavity is opened in the gear housing 7, the plunger pressure flange 6, the cylinder body 1, the pressure cover 9, the disc spring upper pressure cover 10, the disc spring 11, the disc spring lower pressure cover 12, the clamping shaft guide sleeve 13 and the guide sleeve pressure cover 14, a piston 2 that can slide up and down is arranged in the cavity, a vertical clamping shaft 3 is arranged through the interior of the piston 2, the bottom end of the clamping shaft 3 extends downward to the outside of the cavity, is located below the guide sleeve pressure cover 14 and is fixedly connected with a rectangular block 15, the rectangular block 15 and the clamping shaft 3 constitute a T-bar in this utility model; continue to refer to Figure 2 An upper pad 16 sleeved on the clamping shaft 3 is fixedly connected to the top of the rectangular block 15.

[0028] Continue to refer Figure 2 On the basis of traditional technology, the utility model shortens the top of the piston 2 by 50mm, and then places a 50mm transition sleeve 5 between the piston 2 and the half ring 4. The half ring 4 is connected to the top of the piston 2 through the transition sleeve 5. The above-mentioned transition sleeve 5 is made of a material with lower tensile strength than the piston 2, the half ring 4 and the cylinder body 1 during specific manufacturing. For example, the transition sleeve 5 is made of a 40 disc spring lower pressure cover 12r; at the same time, the transition sleeve 5 is connected to the transition sleeve 5 through a plurality of upper bolts 51, and the transition sleeve 5 is connected to the piston 2 through a plurality of lower bolts. Specifically, the tensile strength of each lower bolt should be at least twice the tensile strength of the upper bolt 51, such as: the upper bolt 51 adopts 4.8 grade and the lower bolt adopts 12.9 grade; at the same time, the diameter of the lower bolt is the same as that of the upper bolt 51, such as: the diameters of the lower bolt and the upper bolt 51 are both M18 or M16.

[0029] refer to Figure 2 and Figure 3 In order to facilitate the installation of the upper bolts 51, a plurality of half-ring 4 connecting holes for installing the upper bolts 51 are evenly opened on the circumference of the half ring 4, and a plurality of upper connecting holes 52 are evenly opened on the circumference of the transition sleeve 5. At the same time, the diameter of each upper connecting hole 52 is the same as the diameter of each half-ring 4 connecting hole, and each upper connecting hole 52 and each half-ring 4 connecting hole are provided with matching internal threads.

[0030] At the same time, in order to facilitate the installation of the lower bolts, a plurality of piston 2 connecting holes for installing the lower bolts are evenly opened circumferentially on the top of the piston 2, and a plurality of lower connecting holes 53 corresponding to the plurality of piston 2 connecting holes are evenly opened circumferentially on the transition sleeve 5. At the same time, the diameter of each lower connecting hole 53 is the same as the diameter of the piston 2 connecting hole, and each lower connecting hole 53 and each half ring 4 connecting hole are provided with matching internal threads.

[0031] Continue to refer Figure 3 In the present invention, the number of the multiple upper connecting holes 52 and the number of the multiple lower connecting holes 53 of the transition sleeve 5 are the same, and the upper connecting holes 52 and the lower connecting holes 53 are opened in sequence and staggered.

[0032] Continue to refer Figure 1 The rectangular block 15 of the present invention is connected to an upper anvil 17 , and a groove 18 that matches the rectangular block 15 is opened at the top center of the upper anvil 17 .

[0033] The working principle of the T-bar connection device of the forging press of this embodiment is as follows: since a transition sleeve 5 is provided between the half ring 4 and the piston 2, and the tensile strength of the material of the transition sleeve 5 is lower than the tensile strength of the material of the piston 2, the half ring 4 and the cylinder body 1, and the tensile strength of the lower bolt should be at least twice the tensile strength of the upper bolt 51, when the clamping shaft 3 is lifted upward, the clamping shaft 3 drives the half ring 4 to move upward, and when the half ring 4 moves upward, it will cause the transition sleeve 5 or the upper bolt 51 to be broken, causing the transition sleeve 5 to be damaged.

[0034] When replacing the transition sleeve 5, it is only necessary to remove the gear housing 7 and the upper cover 8, and then replace the damaged transition sleeve 5 with the casing.

[0035] Due to the traditional technology, the half ring 4 and the piston 2 are directly connected together by bolts. When the clamping shaft 3 is pushed upward, the clamping shaft 3 drives the half ring 4 to move upward. At this time, the half ring 4 and the bolts are separated from the piston 2, causing the bottom hole thread of the piston 2 to be damaged. When replacing the piston 2, it is necessary to remove the disc spring upper cover 10, the pressure cover 9, the cylinder body 1, the gear housing 7 and the upper cover 8. As a result, many parts need to be disassembled, and it is difficult to replace the piston 2.

[0036] Therefore, compared with the traditional technology, the present invention requires fewer parts to be disassembled, thereby reducing the difficulty of maintenance, shortening the maintenance time, and preventing a major impact on normal production operations.

[0037] In the above embodiment, the utility model provides a T-bar connection device for a forging press. In the utility model, a transition sleeve is provided between the half ring and the piston, and the tensile strength of the material of the transition sleeve is lower than the tensile strength of the material of the piston, the half ring and the cylinder body, and the tensile strength of the lower bolt should be at least twice the tensile strength of the upper bolt. Therefore, when the clamping shaft is lifted upward, the clamping shaft drives the half ring to move upward. When the half ring moves upward, the transition sleeve or the upper bolt will be pulled off, causing the transition sleeve to be damaged; when replacing the transition sleeve, only the gear housing and the upper cover need to be removed. Compared with traditional technology, the utility model requires fewer parts to be disassembled, thereby reducing the difficulty of maintenance, shortening the maintenance time, and preventing a major impact on normal production operations.

[0038] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Any modifications and improvements to the technical solution of the present invention made by a person of ordinary skill in the art without departing from the design concept of the present invention shall fall within the scope of protection of the present invention. The technical content sought to be protected by the present invention is fully set forth in the claims.

Claims

1. A T-bar connecting device for a forging press, comprising a piston (2) located in a cylinder body (1) and capable of sliding up and down, a vertical clamping shaft (3) passing through the interior of the piston (2), and a half ring (4) sleeved on the clamping shaft (3) provided above the piston (2), characterized in that: A transition sleeve (5) sleeved on the clamping shaft (3) is provided between the half ring (4) and the top of the piston (2); the half ring (4) is connected to the transition sleeve (5) via a plurality of upper bolts (51), and the transition sleeve (5) is connected to the piston (2) via a plurality of lower bolts; wherein the tensile strength of the lower bolts should be at least twice that of the upper bolts (51), and the diameter of the lower bolts is the same as that of the upper bolts (51).

2. A T-bar connecting device for a forging press according to claim 1, characterized in that: The tensile strength of the material of the transition sleeve (5) is lower than the tensile strength of the material of the piston (2), the half ring (4) and the cylinder body (1).

3. The T-bar connecting device for a forging press according to claim 1, characterized in that: A plurality of half-ring (4) connection holes for mounting upper bolts (51) are uniformly opened on the half-ring (4) in the circumferential direction, and a plurality of upper connection holes (52) are uniformly opened on the transition sleeve (5) in the circumferential direction, and the diameter of each upper connection hole (52) is the same as the diameter of the half-ring (4) connection hole.

4. A T-bar connecting device for a forging press according to claim 3, characterized in that: A plurality of piston (2) connection holes for mounting lower bolts are uniformly opened on the top of the piston (2) in the circumferential direction, and a plurality of lower connection holes (53) corresponding to the plurality of piston (2) connection holes are uniformly opened on the transition sleeve (5) in the circumferential direction, and the diameter of each lower connection hole (53) is the same as the diameter of the piston (2) connection hole.

5. A T-bar connecting device for a forging press according to claim 4, characterized in that: The number of the plurality of upper connection holes (52) and the number of the plurality of lower connection holes (53) are the same, and the upper connection holes (52) and the lower connection holes (53) are arranged alternately in sequence.

6. A T-bar connection device for a forging press according to any one of claims 1 to 5, characterized in that: The upper portion of the oil cylinder body (1) is connected to a gear housing (7) via a plunger flange (6); an upper cover (8) is provided above the gear housing (7); and a pressure cover (9), a disc spring upper pressure cover (10), a disc spring (11), a disc spring lower pressure cover (12), a clamping shaft guide sleeve (13), and a guide sleeve pressure cover (14) are sequentially provided below the oil cylinder body (1).

7. A T-bar connecting device for a forging press according to claim 6, characterized in that: The bottom end of the clamping shaft (3) extends downward to the bottom of the guide sleeve pressure cover (14) and is fixedly connected to a rectangular block (15), and an upper pad (16) sleeved on the clamping shaft (3) is provided above the rectangular block (15).

8. The T-bar connecting device for a forging press according to claim 7, characterized in that: A groove (18) matching with the rectangular block (15) is provided at the top center of the upper anvil (17).

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