CN216126500U - Lower die clamping mechanism for hot die forging press - Google Patents

Abstract

The utility model discloses a lower die clamping mechanism for a hot die forging press, which comprises an end cover, a cylinder body, a spacer bush, a piston, a spring sleeve, a disc spring group, a connecting block, a fixing block, a first shaft, a clamping head, a shaft sleeve and a second shaft, wherein the first shaft is fixedly connected with the second shaft; the cylinder body is fixed on the upright post of the press machine, and the end cover is provided with a hydraulic oil inlet hole and fixed on the cylinder body; the spring sleeve is fixed on the cylinder body, the piston is arranged in the spring sleeve, and one end of the piston is connected with the connecting block; the spacer bush is arranged between the cylinder body and the piston; the disc spring group is arranged between the spring sleeve and the piston; one end of the clamping head is fixed on the fixing block, the fixing block is fixed on the upright post of the press machine, the other end of the clamping head is connected with the connecting block, and the connecting block is pushed by the piston to do linear reciprocating motion in the horizontal direction. According to the utility model, linear reciprocating motion in the horizontal direction is converted into rotating motion around the shaft, gas circuit control is not used, the cost is effectively reduced, the volume of the lower die clamping mechanism is reduced, and the device can be used in a narrower space; has economical efficiency and reliability.

Description

Lower die clamping mechanism for hot die forging press

Technical Field

The utility model relates to a lower die clamping mechanism for a hot die forging press, which is applied to the forging industry and belongs to the technical field of hot die forging presses.

Background

At present, a hydraulic clamping mechanism is generally selected as a lower die clamping mechanism of a traditional mechanical press, the hydraulic clamping mechanism needs to be filled with oil and maintained in pressure when working, and if a leakage condition occurs in an oil pressure pipeline when working, the lower die cannot be clamped; some lower die clamping mechanisms also require an air path to control the swing of the clamping head, so that the cost of the whole lower die clamping mechanism is increased.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a lower die clamping mechanism for a hot die forging press aiming at the defects in the prior art.

In order to solve the technical problem, the utility model provides a lower die clamping mechanism for a hot die forging press, which comprises an end cover, a cylinder body, a spacer bush, a piston, a spring bush, a disc spring group, a connecting block, a fixing block, a first shaft, a clamping head, a shaft sleeve and a second shaft. The cylinder body is fixed on an upright post of the press machine through a second inner hexagonal socket head cap screw, and the end cover is provided with a hydraulic oil inlet hole and is fixed on the cylinder body through a third inner hexagonal socket head cap screw; the piston is arranged in the spring sleeve in the cylinder body, and one end of the piston is connected with the connecting block through threads; the spacer bush is arranged between the cylinder body and the piston and used for guiding; the disc spring group is arranged between the spring sleeve and the piston; the clamping head is fixed on the fixing block through the first shaft, the fixing block is fixed on an upright post of the press through a hexagonal head bolt, the clamping head can rotate around the first shaft, the other end of the clamping head is connected with the connecting block through the second shaft and the shaft sleeve, the connecting block is pushed by the piston to do linear reciprocating motion in the horizontal direction, and under the connecting action of the piston, the connecting block, the second shaft, the shaft sleeve, the first shaft, the clamping head and the fixing block, the horizontal reciprocating motion of the piston is converted into the rotary motion of the clamping head around the first shaft, so that the clamping head is clamped and released.

The disc spring group adopts three adjusting pads, and the adjusting pads are ground in the assembling process to play a role in adjusting the overall height of the disc spring group.

And an O-shaped sealing ring is arranged between the end cover and the cylinder body and used for ensuring that hydraulic oil in the hydraulic cavity does not leak.

And a Y-shaped sealing ring is arranged between the piston and the cylinder body and used for preventing hydraulic oil in the hydraulic cavity from leaking.

Has the advantages that: according to the utility model, linear reciprocating motion in the horizontal direction is converted into rotary motion rotating around the shaft through the mechanical internal structure, the swing of the clamping head is not controlled by using a gas path, the cost is effectively reduced, the whole volume of the lower die clamping mechanism is reduced, and the clamping mechanism can be used in a narrower space; the clamping force is provided by the disc spring without using hydraulic oil, so that the safety problem caused by hydraulic oil leakage is fundamentally solved, and the disc spring clamping device has good economical efficiency and reliability.

Drawings

FIG. 1 is a schematic cross-sectional view of a lower mold clamped by a lower mold clamping mechanism according to the present invention;

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

FIG. 3 is a schematic view of the clamping head of the present invention in a released condition with the lower mold;

in the figure: the device comprises an end cover 1, a 2O-shaped sealing ring, a cylinder body 3, a 4Y-shaped sealing ring, a spacer sleeve 5, a piston 6, a spring sleeve 7, a disc spring group 8, a connecting block 9, a fixing block 10, a hexagon head bolt 11, a first shaft 12, a clamping head 13, a shaft sleeve 14, a second shaft 15, a first 16 inner hexagon socket head screw, a second 17 inner hexagon head screw, a third 18 inner hexagon head screw, a hydraulic oil inlet hole A, a hydraulic cavity B and a lower die C.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1 to 3, the present invention provides a lower die clamping mechanism for a hot die forging press. The hydraulic cylinder comprises an end cover 1, a cylinder body 3, a spacer bush 5, a piston 6, a spring bush 7, a disc spring group 8, a connecting block 9, a fixing block 10, a first shaft 12, a clamping head 13, a shaft sleeve 14 and a second shaft 15, wherein the cylinder body 3 is fixed on an upright post of a press machine through a second inner hexagonal socket head cap screw 17, and the end cover 1 is provided with a hydraulic oil inlet hole A and is fixed on the cylinder body 3 through a third inner hexagonal socket head cap screw 18; the spring sleeve 7 is fixed on the cylinder body 3 through a first hexagon socket head cap screw 16, the piston 6 is arranged inside the spring sleeve 7 in the cylinder body 3, and one end of the piston is connected with the connecting block 9 through threads; the spacer bush 5 is arranged between the cylinder 3 and the piston 6 for guiding; the disc spring group 8 is arranged between the spring sleeve 7 and the piston 6; the utility model discloses a press machine, including piston 6, connecting block 9, axle two 15, axle sleeve 14, axle one 12, clamping head 13 one end is fixed on fixed block 10 through axle one 12, fixed block 10 passes through hexagon head bolt 11 to be fixed on the stand of press, and clamping head 13 can rotate around axle one 12, and clamping head 13 other end is connected with connecting block 9 through axle two 15, axle sleeve 14, connecting block 9 is under the promotion of piston 6, is the straight reciprocating motion in the horizontal direction, through under the connection effect of piston 6, connecting block 9, axle two 15, axle sleeve 14, axle one 12, clamping head 13 and fixed block 10, the realization is converted into the rotary motion of clamping head around axle one 13 12 to the effect that clamping head 13 presss from both sides tightly and relaxs down mould C is realized.

The disc spring group 8 adopts three adjusting pads, and the adjusting pads are ground in the assembling process to play a role in adjusting the overall height of the disc spring group 8.

And an O-shaped sealing ring 2 is arranged between the end cover 1 and the cylinder body 3 to ensure that hydraulic oil in the hydraulic cavity B does not leak.

And a Y-shaped sealing ring 4 is arranged between the piston 6 and the cylinder body 3 and used for preventing hydraulic oil in the hydraulic cavity B from leaking.

The working principle of the utility model is as follows:

hydraulic oil enters a hydraulic cavity B through a hydraulic oil inlet hole A in the end cover 1, the piston 6 is pushed to move rightwards, the spacer 5, the connecting block 9, the shaft sleeve 14 and the shaft II 15 are further driven to move rightwards, the lower portion of the clamping head 13 moves rightwards under the pushing of the shaft sleeve 14, meanwhile, the clamping head 13 is fixed on the fixing block 10 through the shaft I12, namely, the clamping head 13 moves rightwards and is converted into anticlockwise rotation movement of the clamping head 13 around the shaft I12. When the piston 6 moves to the inner stop of the cylinder 3, the movement is finished, and X is the horizontal moving distance of the piston 6. At the moment, the lower die clamping mechanism loosens the lower die, and the lower die C can be assembled or disassembled.

After the lower die is installed, hydraulic oil pressure relief in the hydraulic cavity B is controlled, under the action of disc spring force of the disc spring group 8, the piston 6 is pushed to move leftwards, the spacer bush 5, the connecting block 9, the shaft sleeve 14 and the second shaft 15 are further driven to move leftwards, the lower portion of the clamping head 13 moves leftwards under the pushing of the shaft sleeve 14, meanwhile, the clamping head 13 is fixed on the fixing block 10 through the first shaft 12, namely, the leftward movement of the clamping head 13 is converted into clockwise rotation movement of the clamping head 13 around the first shaft 12, and therefore the clamping head 13 is completed to clamp the lower die C.

The utility model has simple structure, easy processing and convenient installation and maintenance, realizes the conversion of linear reciprocating motion in the horizontal direction into rotary motion rotating around a shaft through the mechanical internal structure, does not use an air path to control the swing of the clamping head, effectively reduces the cost, reduces the whole volume of the lower die clamping mechanism and can be used in narrower space; the clamping force is provided by the disc spring without using hydraulic oil, so that the safety problem caused by hydraulic oil leakage is fundamentally solved, and the disc spring clamping device has good economical efficiency and reliability.

The above-described embodiments of the utility model are intended to be illustrative only and are not intended to be limiting, as all changes that come within the scope of or equivalence to the utility model are intended to be embraced therein.

Claims (4)

1. The utility model provides a bed die clamping mechanism for hot die forging press which characterized in that: the device comprises an end cover (1), a cylinder body (3), a spacer bush (5), a piston (6), a spring sleeve (7), a disc spring group (8), a connecting block (9), a fixing block (10), a first shaft (12), a clamping head (13), a shaft sleeve (14) and a second shaft (15), wherein the cylinder body (3) is fixed on an upright post of a press machine through a second inner hexagonal cylindrical head screw (17); the end cover (1) is provided with a hydraulic oil inlet hole (A) and is fixed on the cylinder body (3) through a third hexagon socket head cap screw (18); the spring sleeve (7) is fixed on the cylinder body (3) through a first hexagon socket head cap screw (16), the piston (6) is arranged inside the spring sleeve (7) in the cylinder body (3), and one end of the piston is connected with the connecting block (9) through threads; the spacer bush (5) is arranged between the cylinder body (3) and the piston (6) for guiding; the disc spring group (8) is arranged between the spring sleeve (7) and the piston (6); one end of the clamping head (13) is fixed on the fixing block (10) through the first shaft (12), the fixing block (10) is fixed on an upright post of the press machine through a hexagon head bolt (11), the other end of the clamping head (13) is connected with the connecting block (9) through the second shaft (15) and the shaft sleeve (14), the connecting block (9) is pushed by the piston (6) to do linear reciprocating motion in the horizontal direction, and the horizontal reciprocating motion of the piston (6) is converted into the rotary motion of the clamping head (13) around the first shaft (12) under the connecting action of the piston (6), the connecting block (9), the second shaft (15), the shaft sleeve (14), the first shaft (12), the clamping head (13) and the fixing block (10), so that the clamping head (13) can clamp and release the lower die (C).

2. The lower die clamping mechanism for a hot die forging press as claimed in claim 1, wherein: the disc spring group (8) adopts three adjusting pads, and the adjusting pads are ground in the assembling process to play a role in adjusting the overall height of the disc spring group (8).

3. The lower die clamping mechanism for a hot die forging press as claimed in claim 1, wherein: an O-shaped sealing ring (2) is arranged between the end cover (1) and the cylinder body (3) and used for ensuring that hydraulic oil in the hydraulic cavity (B) does not leak.

4. The lower die clamping mechanism for a hot die forging press according to claim 1, 2 or 3, wherein: and a Y-shaped sealing ring (4) is arranged between the piston (6) and the cylinder body (3) and used for preventing hydraulic oil in the hydraulic cavity (B) from leaking.

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