Two-station hot forging inner hexagonal forming device

Abstract

This invention relates to the technical field of special steel internal hexagonal forming equipment, and in particular to a two-station hot forging special steel internal hexagonal forming device, comprising a punch press, a punch press circuit system, a punch press slide, and a lower die assembly located below the punch press slide. An upper die assembly is mounted on the bottom of the punch press slide, and the upper die assembly includes an upper template fixed to the bottom of the punch press slide. A horizontally arranged cylinder is mounted on one side of the upper template. Along the cylinder's movement direction, a terminal upper die head and a pre-forging upper die head are mounted on the telescopic end of the cylinder. The cylinder drives the terminal upper die head to move directly above the lower die assembly, or drives the pre-forging upper die head to move directly above the lower die assembly. This device requires only one 125T punch press and can be operated by two people. It can process 2500-3000 pieces per shift, reducing power consumption by 30% and labor costs by 33% compared to the original process, achieving excellent overall benefits.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hexagonal processing equipment of special steel material, and particularly to a two-station hot forging special steel material hexagonal forming device. BACKGROUND

[0002] At present, most of the small-size hexagonal forging of ordinary materials is processed by multi-station cold heading machine, but for special steel materials, it is difficult to form by cold heading due to high material strength and forging difficulty, and even if formed, there are many forging defects and the product quality is unqualified. Figure 1 As shown in the figure, the forged product is heated to the forging temperature in a high-frequency furnace, a blank is made on a No. 1 punch, and then the product is heated again and moved to a No. 2 punch for final forging. Two punches and two groups of personnel are required for combined forging. This process processes 1800-2000 pieces per shift, requires 3 people to work together, and requires two 125T punches, which is a large investment in equipment and personnel, high energy consumption, and low overall efficiency. SUMMARY

[0003] The purpose of the present application is to solve the problem of high material strength and forging difficulty in the prior art when processing hexagonal special steel materials, which requires a large investment in equipment and personnel, high energy consumption, and low overall efficiency. A two-station hot forging special steel material hexagonal forming device is provided.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0005] A two-station hot forging special steel material hexagonal forming device, comprising a punch, the punch comprising a punch circuit system, a punch sliding block, a lower die assembly located below the punch sliding block, the bottom of the punch sliding block being provided with an upper die assembly, the upper die assembly comprising an upper die plate fixedly connected to the bottom of the punch sliding block, one side of the upper die plate being provided with a horizontally arranged air cylinder, along the movement direction of the air cylinder, the extension end of the air cylinder being provided with a final forging upper die head and a pre-forging upper die head, the final forging upper die head being driven to move to the upper side of the lower die assembly by the air cylinder, or the pre-forging upper die head being driven to move to the upper side of the lower die assembly by the air cylinder.

[0006] One side of the upper die plate is fixedly connected or integrally formed with an air cylinder mounting plate, the air cylinder is fixedly connected to the air cylinder mounting plate, the extension end of the air cylinder is fixedly connected with a push-pull die plate, the push-pull die plate abuts against or is slidingly connected with the bottom plane of the upper die plate, and the final forging upper die head and the pre-forging upper die head are fixedly connected to the bottom of the push-pull die plate.

[0007] The lower die assembly comprises a lower die plate fixedly arranged opposite to the ground, a lower die seat fixedly installed on the lower die plate, a first lower die, a second lower die and a lower die cylinder installed on the lower die seat from top to bottom, and the first lower die and the second lower die form a stepped cylinder structure.

[0008] The punch circuit system comprises a first relay J1, a second relay J2, a foot switch JT, a first proximity switch SQ1, a second proximity switch SQ2, the first proximity switch SQ1 is arranged close to the finish forging upper die head, the second proximity switch SQ2 is arranged close to the pre-forging upper die head, the electromagnetic coil of the first relay J1 is connected in series with the first proximity switch SQ1 to form a first circuit, the electromagnetic coil of the second relay J2 is connected in series with the second proximity switch SQ2 to form a second circuit, the first circuit, the second circuit, the normally open contact of the first relay J1, and the normally open contact of the second relay J2 are connected in parallel and then connected in series with the foot switch JT in the power circuit for driving the punch slider to move.

[0009] The punch circuit system further comprises a third proximity switch SQ3, a third relay J3, a fourth relay J4, and a gas circuit two-position three-way reversing valve line pack relay Q1, the third proximity switch SQ3 is arranged on one side of the punch slider for monitoring the state of the punch slider;

[0010] The electromagnetic coil of the first relay J1 is connected in series with the first proximity switch SQ1 to form a first circuit;

[0011] The electromagnetic coil of the second relay J2 is connected in series with the second proximity switch SQ2 to form a second circuit;

[0012] The third proximity switch SQ3 is connected in series with the electromagnetic coil of the third relay J3 to form a third circuit;

[0013] The normally open contact of the second relay J2 and the normally open contact of the third relay J3 are connected in series and then connected in parallel with the normally open contact of the fourth relay J4 to form a fourth circuit; the fourth circuit is connected in series with the normally closed contact of the first relay J1 and the electromagnetic coil of the fourth relay J4 to form a fifth circuit;

[0014] The normally open contact of the first relay J1 and the normally open contact of the third relay J3 are connected in series and then connected in parallel with the normally open contact of the gas circuit two-position three-way reversing valve line pack relay Q1 to form a sixth circuit; the sixth circuit is connected in series with the normally closed contact of the fourth relay J4 and the cylinder reversing valve line pack of the gas circuit two-position three-way reversing valve line pack relay Q1 to form a seventh circuit;

[0015] The first circuit, the second circuit, the third circuit, the fifth circuit, the seventh circuit, the normally open contact of the first relay J1, and the normally open contact of the second relay J2 are connected in parallel and then connected in series with the foot switch JT in the power circuit for driving the punch slider to move.

[0016] The two-station hot forging special steel material internal hex forming device has the advantages that only one 125T punch is needed, and two people can complete the work, 2500-3000 products can be processed in one shift, the power consumption is reduced by 30% compared with the original process, the labor cost is reduced by 33%, and good comprehensive benefits are obtained. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a special steel material forging internal hex process flow diagram;

[0018] Figure 2 It is a pre-forging state structure diagram of the present application;

[0019] Figure 3 It is a final forging state structure diagram of the present application;

[0020] Figure 4 It is a punch circuit system structure diagram of the present application;

[0021] Figure 5 It is a cylinder circuit structure diagram of the present application.

[0022] In the figure: punch slide 1, upper die plate 2, push-pull die plate 3, cylinder mounting plate 4, cylinder 5, final forging upper die head 6, pre-forging upper die head 7, first lower die 8, second lower die 9, lower die seat 10, lower die plate 11, lower die cylinder 12, first proximity switch SQ1, second proximity switch SQ2, third proximity switch SQ3, first relay J1, second relay J2, third relay J3, fourth relay J4, gas circuit two-position three-way reversing valve line package relay Q1, foot switch JT. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all.

[0024] REFERENCE Figures 1-5 A two-station hot forging special steel material internal hex forming device, comprising a punch, the punch comprising a punch circuit system, a punch slide 1, a lower die assembly located below the punch slide 1, and an upper die assembly installed at the bottom of the punch slide 1, the upper die assembly comprising an upper die plate 2 fixedly connected to the bottom of the punch slide 1, the upper die plate 2 having a horizontally arranged cylinder 5 installed on one side, along the movement direction of the cylinder 5, the telescopic end of the cylinder 5 being provided with a final forging upper die head 6 and a pre-forging upper die head 7, the final forging upper die head 6 being driven by the cylinder 5 to move to the upper side of the lower die assembly, or the pre-forging upper die head 7 being driven by the cylinder 5 to move to the upper side of the lower die assembly.

[0025] The device is modified to the original punch, and a cylinder 5, a final forging upper die head 6 and a pre-forging upper die head 7 are installed at the bottom of the original punch slider 1. When pre-forging, the pre-forging upper die head 7 is moved to the upper side of the lower die assembly, and then the punch slider 1 is pressed downward, and the pre-forging upper die head 7 and the lower die assembly are matched to realize the pre-forging forming of the special steel material. Then the final forging upper die head 6 and the pre-forging upper die head 7 are moved by the cylinder 5, the final forging upper die head 6 is moved to the upper side of the lower die assembly, and then the punch slider 1 is pressed downward, and the final forging upper die head 6 and the lower die assembly are matched to realize the final forging forming of the special steel material. The device only needs to invest a 125T punch, and two people can complete it. One shift can process 2500-3000 products, the power consumption is reduced by 30% compared with the original process, the labor cost is reduced by 33%, and good comprehensive benefits are achieved.

[0026] As an embodiment, refer to Figure 1 One side of the upper die plate 2 is fixedly connected or integrally formed with a cylinder mounting plate 4, the cylinder 5 is fixedly connected to the cylinder mounting plate 4, the telescopic end of the cylinder 5 is fixedly connected with a push-pull die plate 3, the push-pull die plate 3 abuts against or is slidingly connected with the bottom plane of the upper die plate 2, the final forging upper die head 6 and the pre-forging upper die head 7 are both fixedly connected to the bottom of the push-pull die plate 3, and the push-pull die plate 3 is moved by the cylinder 5 to change the positions of the final forging upper die head 6 and the pre-forging upper die head 7.

[0027] As an embodiment of the lower die assembly, the lower die assembly includes a lower die plate 11 fixedly arranged opposite to the ground, a lower die seat 10 fixedly installed on the lower die plate 11, and a first lower die 8, a second lower die 9 and a lower die cylinder 12 sequentially installed on the lower die seat 10 from top to bottom. The first lower die 8 and the second lower die 9 form a stepped cylinder structure. After the special steel material is heated, it is inserted into the first lower die 8, the second lower die 9 and the lower die cylinder 12, and then pre-forging and final forging can be performed.

[0028] As an embodiment of the punch circuit system, refer to Figure 4 , Figure 5 The punch circuit system includes a first relay J1, a second relay J2, a foot switch JT, a first proximity switch SQ1 and a second proximity switch SQ2. The first proximity switch SQ1 is arranged close to the final forging upper die head 6, and the second proximity switch SQ2 is arranged close to the pre-forging upper die head 7. The electromagnetic coil of the first relay J1 is connected in series with the first proximity switch SQ1 to form a first circuit, and the electromagnetic coil of the second relay J2 is connected in series with the second proximity switch SQ2 to form a second circuit. The first circuit, the second circuit, the normally open contact of the first relay J1 and the normally open contact of the second relay J2 are connected in parallel and then connected in series with the foot switch JT in the power circuit for driving the punch slider 1 to move.

[0029] Refer to Figure 2 , Figure 4 , Figure 5When the final forging upper die head 6 approaches the first proximity switch SQ1, the pre-forging upper die head 7 is located directly above the lower die assembly, the first relay J1 electromagnetic coil is powered, the first relay J1 normally open contact is attracted, the foot switch JT is pressed to make the punch slider 1 move downward, and the pre-forging work is completed;

[0030] Reference Figure 3 、 Figure 4 、 Figure 5 Then adjust the position of the final forging upper die head 6 and the pre-forging upper die head 7 through the air cylinder 5, when the pre-forging upper die head 7 approaches the second proximity switch SQ2, the final forging upper die head 6 is located directly above the lower die assembly, the second relay J2 electromagnetic coil is powered, the second relay J2 normally open contact is attracted, the foot switch JT is pressed to make the punch slider 1 move downward, and the final forging work is completed.

[0031] As a further scheme of the above-mentioned punch circuit system embodiment, the punch circuit system further comprises a third proximity switch SQ3, a third relay J3, a fourth relay J4, and an air path two-position three-way directional valve line pack relay Q1, the third proximity switch SQ3 is arranged on one side of the punch slider 1 for monitoring the state of the punch slider 1;

[0032] The first relay J1 electromagnetic coil and the first proximity switch SQ1 are connected in series to form a first circuit;

[0033] The second relay J2 electromagnetic coil and the second proximity switch SQ2 are connected in series to form a second circuit;

[0034] The third proximity switch SQ3 and the third relay J3 electromagnetic coil are connected in series to form a third circuit;

[0035] The second relay J2 normally open contact and the third relay J3 normally open contact are connected in series, and then are connected in parallel with the fourth relay J4 normally open contact to form a fourth circuit; the fourth circuit and the first relay J1 normally closed contact and the fourth relay J4 electromagnetic coil are connected in series to form a fifth circuit;

[0036] The first relay J1 normally open contact and the third relay J3 normally open contact are connected in series, and then are connected in parallel with the air path two-position three-way directional valve line pack relay Q1 normally open contact to form a sixth circuit; the sixth circuit and the fourth relay J4 normally closed contact and the air path two-position three-way directional valve line pack relay Q1 cylinder directional valve line pack are connected in series to form a seventh circuit;

[0037] The first circuit, the second circuit, the third circuit, the fifth circuit, the seventh circuit, the first relay J1 normally open contact, and the second relay J2 normally open contact are connected in parallel, and then are connected in series with the foot switch JT in the power circuit for driving the punch slider 1 to move.

[0038] In operation, at initial power-on, the air cylinder loses power, the push-pull die is in the rear limit position, i.e. the finish-forging upper die head 6 is close to the first proximity switch SQ1, the pre-forging upper die head 7 is located directly above the lower die assembly, the first relay J1 electromagnetic coil is powered, the foot switch JT is pressed, the punch is lowered to pre-forging; the punch slider 1 is raised to trigger the third proximity switch SQ3, the third relay J3 coil is powered, the air path two-position three-way reversing valve line pack relay Q1 is powered and locked, the air cylinder reversing valve line pack is powered, the air cylinder is pushed to the front limit position, i.e. the pre-forging upper die head 7 is close to the second proximity switch SQ2, the finish-forging upper die head 6 is located directly above the lower die assembly, the second relay J2 coil is powered, and the first relay J1 coil loses power at the same time, at this time the finish-forging upper die is aligned with the lower die, the foot switch JT is pressed, the punch is lowered to finish-forging, the slider is raised to trigger the third proximity switch SQ3, the third relay J3 coil is powered, the second relay J2 is powered, the fourth relay J4 coil is powered and locked, the air cylinder loses power, and the push-pull die is reset, i.e. the finish-forging upper die head 6 is close to the first proximity switch SQ1, and the pre-forging upper die head 7 is located directly above the lower die assembly, completing a cycle. The device ensures that the foot switch can only be effective when the die is in the pre-forging upper die or the finish-forging upper die alignment, ensuring safety during forging and improving overall forging efficiency.

[0039] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can obtain technical solutions, concepts and designs according to the technical solutions and inventive concepts of the present application within the technical range disclosed by the present application, by equivalent replacement or change, which should be covered within the protection scope of the present application.

Claims

1. A two-station hot forging special steel material internal hexagon forming device, comprising a punch, the punch comprising punch circuit system, punch slider (1), lower die assembly located below the punch slider (1), and upper die assembly installed at the bottom of the punch slider (1), characterized in that, The upper die assembly includes an upper die plate (2) fixed at the bottom of the punch slider (1), one side of the upper die plate (2) is provided with a horizontally arranged air cylinder (5), and the telescopic end of the air cylinder (5) is provided with a finish forging upper die head (6) and a pre-forging upper die head (7); the finish forging upper die head (6) is driven by the air cylinder (5) to move to the upper side of the lower die assembly, or the pre-forging upper die head (7) is driven by the air cylinder (5) to move to the upper side of the lower die assembly; The punch circuit system includes a first relay J1, a second relay J2, a foot switch JT, a first proximity switch SQ1, and a second proximity switch SQ2; the first proximity switch SQ1 is arranged near the finish forging upper die head (6), and the second proximity switch SQ2 is arranged near the pre-forging upper die head (7); the electromagnetic coil of the first relay J1 is connected in series with the first proximity switch SQ1 to form a first circuit, and the electromagnetic coil of the second relay J2 is connected in series with the second proximity switch SQ2 to form a second circuit; The punch circuit system further includes a third proximity switch SQ3, a third relay J3, a fourth relay J4, and a line package relay Q1 of a two-position three-way reversing valve; the third proximity switch SQ3 is arranged on one side of the punch slider (1) to monitor the state of the punch slider (1); The third proximity switch SQ3 is connected in series with the electromagnetic coil of the third relay J3 to form a third circuit; The normally open contact of the second relay J2 and the normally open contact of the third relay J3 are connected in series, and the normally open contact is connected in parallel with the normally open contact of the fourth relay J4 to form a fourth circuit; the fourth circuit is connected in series with the normally closed contact of the first relay J1 and the electromagnetic coil of the fourth relay J4 to form a fifth circuit; The normally open contact of the first relay J1 and the normally open contact of the third relay J3 are connected in series, and the normally open contact is connected in parallel with the normally open contact of the line package relay Q1 of the two-position three-way reversing valve to form a sixth circuit; the sixth circuit is connected in series with the normally closed contact of the fourth relay J4 and the cylinder reversing valve line package of the line package relay Q1 of the two-position three-way reversing valve to form a seventh circuit; The first circuit, the second circuit, the third circuit, the fifth circuit, and the seventh circuit are connected in parallel with the normally open contact of the first relay J1 and the normally open contact of the second relay J2, and then connected in series with the foot switch JT in the power circuit for driving the punch slider (1) to move.

2. The two-station hot-forging special-steel internal hex forming device according to claim 1, characterized in that, One side of the upper die plate (2) is fixed or integrally formed with a cylinder mounting plate (4), the air cylinder (5) is fixed on the cylinder mounting plate (4), the telescopic end of the air cylinder (5) is fixed with a push-pull die plate (3), the push-pull die plate (3) abuts against the bottom plane of the upper die plate (2), and the two are slidingly connected, and the finish forging upper die head (6) and the pre-forging upper die head (7) are both fixed at the bottom of the push-pull die plate (3).

3. The two-station hot-forging device for forming an internal hexagonal head of a special steel material according to claim 1 or 2, characterized in that, The lower die assembly comprises a lower die plate (11) fixed relative to the ground, a lower die seat (10) fixedly installed on the lower die plate (11), and a first lower die (8), a second lower die (9) and a lower die cylinder (12) installed on the lower die seat (10) from top to bottom.

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