Adjustment device for upper buffer cylinder of hydraulic press

Abstract

The invention discloses a hydraulic press upper buffer cylinder adjustment device, comprising a main shaft arranged at an upper crossbeam, characterized in that a buffer piston is arranged on the main shaft, a buffer cylinder is arranged on the upper crossbeam, the buffer piston is installed on the buffer cylinder, an adjustment sleeve is threadedly connected on the buffer piston, and a gear part is arranged on the outer side of the adjustment sleeve; a bracket is arranged on the upper crossbeam on the main shaft side, a tooth column is rotatably arranged on the bracket, the tooth column is arranged vertically, the top of the tooth column is connected to a driving mechanism, and the lower part of the tooth column is meshed with the gear part on the adjustment sleeve; wherein the driving mechanism is connected to an encoder. The invention has a good buffering and shock absorbing effect, occupies a small space, is not easy to be damaged, and reduces the difficulty of processing and maintenance.

Description

Technical Field

[0001] The invention relates to an adjusting device, in particular to an adjusting device for a buffer cylinder mounted on a hydraulic press. Background Art

[0002] With the development of economy, casting plasticity has become inevitable and social consensus. Hydraulic presses are increasingly developing in the direction of energy saving, easy use, space saving, safety and efficiency, and multi-functionality. Hydraulic presses, as an important member of people's production, are no exception. When the hydraulic press breaks during the working process, the buffer device can controllably reduce the freely changing pressure energy in order to protect the hydraulic press and the mold and reduce noise. The buffer device in the prior art has poor effect. Summary of the invention

[0003] The purpose of the present invention is to provide a hydraulic press upper buffer cylinder adjustment device with better buffering and shock absorbing effect.

[0004] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a hydraulic press upper buffer cylinder adjustment device, comprising a main shaft arranged at an upper crossbeam, characterized in that a buffer piston is arranged on the main shaft, a buffer cylinder is arranged on the upper crossbeam, the buffer piston is installed in the buffer cylinder, an adjustment sleeve is threadedly connected to the buffer piston, and a gear portion is arranged on the outer side of the adjustment sleeve;

[0005] A bracket is arranged on the upper crossbeam on the main shaft side, and a gear column is rotatably arranged on the bracket. The gear column is arranged vertically, the top of the gear column is connected to the driving mechanism, and the lower part of the gear column is meshed with the gear part on the adjustment sleeve;

[0006] Wherein, the driving mechanism is connected to the encoder.

[0007] Further: a convex ring is arranged on the adjusting sleeve at the lower side of the gear part.

[0008] Further: the bracket is fixedly connected to the upper crossbeam, a support portion is arranged on the side of the bracket, and the support portion and the bracket are fixedly connected via a crossbar.

[0009] Further: the driving mechanism includes a motor and a reducer connected to the motor.

[0010] Further: the motor is arranged on the side of the bracket away from the main shaft.

[0011] Furthermore, the upper crossbeam (11) is provided with an overtravel monitoring device (10) cooperating with the upper die of the hydraulic press, the overtravel monitoring device comprising a T-shaped buffer channel (100) arranged on the upper crossbeam, a buffer head (101) installed on the T-shaped buffer channel, a buffer rod (104) arranged in the lower hole of the T-shaped buffer channel and connected to the buffer head, a buffer spring (102) arranged on the top of the buffer head and located in the T-shaped buffer channel, and a serpentine buffer air gap (103) arranged on the top of the T-shaped buffer channel and extending downward from the side wall of the T-shaped buffer channel, wherein the serpentine buffer air gap is provided with a solution;

[0012] The upper crossbeam is provided with a vertical through hole (105) at the outlet of the serpentine buffer air gap, the vertical through hole (105) is provided with a multi-layer pressure membrane (106), and a solution sensing device (107) located below the pressure membrane is provided in the vertical through hole.

[0013] On the other hand, a hydraulic press has two main shafts arranged at an upper crossbeam, characterized in that the hydraulic press upper buffer cylinder adjustment device as described above is arranged at each main shaft.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention has better buffering and shock absorbing effect, occupies less space, is not easy to be damaged, and reduces the difficulty of processing and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a cross-sectional view of the hydraulic press's upper buffer cylinder adjustment device.

[0016] Figure 2 This is an example of the front view of the hydraulic press upper buffer cylinder adjustment device in use.

[0017] Figure 3 An example of a three-dimensional diagram of the use status of the adjustment device of the upper buffer cylinder of a hydraulic press.

[0018] Figure 4 This is a schematic diagram of the overtravel monitoring device located on the upper crossbeam in Example 3.

[0019] Figure 5 It is a partial cross-sectional view of the overtravel monitoring device in Example 3.

[0020] Figure 6 for Figure 5 Enlarged view of point I.

[0021] Figure 7 This is a schematic diagram of the overtravel monitoring device located on the upper crossbeam in Example 4.

[0022] Figure 8 for Figure 7 Enlarged view of point II in the middle. DETAILED DESCRIPTION

[0023] Example 1: See Figure 1 A hydraulic press upper buffer cylinder adjustment device includes a main shaft 12 arranged at an upper cross beam 11, a buffer piston 31 is arranged on the main shaft 12, a buffer cylinder 32 is arranged on the upper cross beam 11, the buffer piston 31 is installed in the buffer cylinder 32, an adjustment sleeve 33 is threadedly connected to the buffer piston 31, and a gear part 34 is arranged on the outer side of the adjustment sleeve 33.

[0024] A bracket 41 is arranged on the upper crossbeam 11 on the side of the main shaft 12, and a gear column 42 is rotatably arranged on the bracket 41 (bearings are arranged on the upper and lower parts of the bracket, and the gear column is installed on the bearings). The gear column 42 is arranged vertically, and the top of the gear column 42 is connected to the driving mechanism 43 (the driving mechanism is arranged on the bracket), and the lower part of the gear column 42 is meshed with the gear part 34 on the adjustment sleeve 33; wherein the driving mechanism 43 is connected to the encoder (the encoder is connected to the control unit of the hydraulic press). The driving mechanism includes a motor and a reducer connected to the motor.

[0025] In the embodiment, a convex ring 331 is provided on the adjusting sleeve 33 at the lower side of the gear portion 34. This design facilitates the installation and use of the gear portion 34.

[0026] In the embodiment, the bracket 41 is fixedly connected to the upper cross beam 11, a support portion 411 is provided on the side of the bracket 41, and the support portion 411 and the bracket 41 are fixedly connected via a cross bar 412. This design can improve the stability of the bracket part.

[0027] In the embodiment, the motor is arranged on the side of the bracket away from the main shaft. This design is conducive to the operation of the adjustment device.

[0028] When the hydraulic press is working, the encoder controls the driving mechanism to work, the driving mechanism drives the gear column to rotate, the gear column drives the gear part and the adjusting sleeve to rotate (the adjusting sleeve rotates and moves upward). When the impact load breaks, on the one hand, the buffer piston cooperates with the buffer cylinder to perform buffering and shock absorption; on the other hand, due to the existence of the adjusting sleeve, gear part and gear column part, the main shaft can be locked to achieve buffering and shock absorption.

[0029] Embodiment 2: A hydraulic press having two main shafts arranged at an upper cross beam, wherein the hydraulic press upper buffer cylinder adjustment device as described in Embodiment 1 is arranged at each main shaft.

[0030] Figure 2 and Figure 3 The present invention is an example of a usage state of a buffer cylinder adjustment device mounted on a hydraulic press. The hydraulic press has two main shafts (partial structures are omitted in the figure), and a buffer cylinder adjustment device mounted on the hydraulic press is arranged at each main shaft.

[0031] Embodiment 3: This embodiment differs from Embodiment 1 in that, see Figure 4-6As shown, the upper cross beam 11 is provided with an over-travel monitoring device 10 cooperating with the upper die of the hydraulic press. The over-travel action of the upper die of the hydraulic press is relatively dangerous, and there is a practical safety demand for monitoring it.

[0032] Specifically, the overtravel monitoring device includes a T-shaped buffer channel 100 disposed on the upper crossbeam, the T-shaped buffer channel having an upper hole for the buffer head to move and a lower hole for installing a buffer rod 104, and the buffer head 101 installed in the upper hole of the T-shaped buffer channel can move up and down in the T-shaped buffer channel, and the buffer head will not move when the upper die does not overtravel. The buffer rod 104 disposed in the lower hole of the T-shaped buffer channel and connected to the buffer head can be contacted and move upward when the upper die moves upward due to overtravel. It is worth mentioning that the buffer spring 102 disposed on the top of the buffer head and located in the T-shaped buffer channel can allow the buffer rod to be in a position such as Figure 5 In the state shown (untriggered state), slight external force cannot touch the buffer rod, thus avoiding false alarms. The serpentine buffer air gap 103 arranged at the top of the T-shaped buffer channel and extending downward from the side wall of the T-shaped buffer channel uses the characteristics of its structure to distribute the solution. The solution can be water or other colored liquids. The top liquid level of the solution must be lower than the top of the T-shaped buffer channel to prevent the solution from entering the T-shaped buffer channel. The appearance of the serpentine buffer air gap can cause the internal solution to be sprayed due to unexpected pressure, and the serpentine buffer air gap can also be used to provide resistance to the upward movement of the buffer head, giving double protection to the overtravel monitoring device 10 with the assistance of the spring, and can also provide auxiliary buffering effect for the upper mold.

[0033] See also Figure 6 The upper crossbeam is provided with a vertical through hole 105 at the outlet of the serpentine buffer air gap, and the inner diameter of the vertical through hole is larger than the inner diameter of the serpentine buffer air gap. A multi-layer pressure membrane 106 is provided in the vertical through hole 105, such as the 2-layer pressure membrane shown in the figure, and a solution sensing device 107 (such as a liquid sensor) is provided below the pressure membrane in the vertical through hole. When the solution in the serpentine air gap flows out due to the damage of the pressure membrane, it will be detected by the solution sensing device, and the solution sensing device will transmit the signal to the controller connected thereto (at this time, it indicates that the upper mold has an over-travel action, and the over-travel action can be an over-travel action of any amplitude, and the monitoring sensitivity is high), and the controller thereby alarms the staff through the warning system.

[0034] Embodiment 4: The difference between this embodiment and embodiment 3 is that pressure regulating devices 108 are respectively provided at the beginning and end of the serpentine buffer air gap. The pressure regulating devices provided at the upper and lower ends can effectively regulate the internal pressure and the liquid replenishment operation. Figure 7-8The pressure regulating device includes a pressure regulating rod 108a arranged in a horizontal pressure regulating hole provided in the upper mold, the horizontal pressure regulating hole has a first horizontal pressure regulating hole, a second horizontal pressure regulating middle hole connected to the first horizontal pressure regulating hole, and a third horizontal pressure regulating end hole connected to the second pressure regulating middle hole. The inner diameter of the first horizontal pressure regulating hole is larger than the inner diameter of the second horizontal pressure regulating middle hole, thereby forming a step structure at adjacent positions of the two. The inner diameter of the third horizontal pressure regulating end hole is larger than the inner diameter of the first horizontal pressure regulating hole. The pressure regulating rod includes a first pressure regulating rod 108a-1 matched with the first horizontal pressure regulating hole, a second pressure regulating rod 108a-2 connected to the first pressure regulating rod and located in the second horizontal pressure regulating middle hole, and a circular regulating head 108a-3 connected to the second pressure regulating rod. The outer diameter of the first pressure regulating rod 108a-1 is adapted to the inner diameter of the first horizontal pressure regulating hole, and the second pressure regulating rod 108a-1 is adapted to the inner diameter of the second horizontal pressure regulating hole. The length of the force adjustment rod is greater than the length of the second pressure adjustment hole to facilitate the travel action requirements of the adjustment rod, and the second pressure adjustment rod is sleeved with a normally closed spring 108b located in the first horizontal pressure adjustment hole, and the pressure adjustment rod is provided with a horizontal adjustment hole 108c that passes through the first pressure adjustment rod and the second pressure adjustment rod, and the circular adjustment head 108a-3 is provided with a vertical adjustment hole 108d that communicates with the horizontal adjustment hole 108c. When an external force pushes the pressure adjustment rod, the circular adjustment head 108a-3 is pushed out of the third horizontal pressure adjustment end hole. At this time, the vertical adjustment hole 108d is connected with the serpentine buffer air gap, and then communicates with the external environment through the horizontal adjustment hole 108c of the horizontal adjustment rod, thereby effectively adjusting the internal pressure of the serpentine buffer air gap. More importantly, a syringe can be used to fill the horizontal adjustment hole 108c and the vertical adjustment hole 108d of the horizontal adjustment rod to meet the fluid replenishment needs of the serpentine buffer air gap.

[0035] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. All technical solutions belonging to the principle of the present invention belong to the protection scope of the present invention. For those skilled in the art, several improvements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A hydraulic press upper buffer cylinder adjustment device, comprising a main shaft (12) arranged at an upper crossbeam (11), characterized in that: A buffer piston (31) is arranged on the main shaft (12), a buffer cylinder (32) is arranged on the upper cross beam (11), the buffer piston (31) is installed in the buffer cylinder (32), an adjustment sleeve (33) is threadedly connected to the buffer piston (31), and a gear part (34) is arranged outside the adjustment sleeve (33); A bracket (41) is arranged on the upper crossbeam (11) on the main shaft (12) side, a gear column (42) is rotatably arranged on the bracket (41), the gear column (42) is arranged vertically, the top of the gear column (42) is connected to the driving mechanism (43), and the bottom of the gear column (42) is meshed with the gear part (34) on the adjustment sleeve (33); Wherein, the driving mechanism (43) is connected to the encoder.

2. The hydraulic press upper buffer cylinder adjustment device according to claim 1 is characterized in that: A convex ring (331) is provided on the adjusting sleeve (33) at the lower side of the gear portion (34).

3. The hydraulic press upper buffer cylinder adjustment device according to claim 1 is characterized in that: The bracket (41) and the upper crossbeam (11) are fixedly connected, a support portion (411) is provided on the side of the bracket (41), and the support portion (411) and the bracket (41) are fixedly connected via a crossbar (412).

4. The hydraulic press upper buffer cylinder adjustment device according to claim 1, characterized in that: The driving mechanism includes a motor and a reducer connected to the motor.

5. The hydraulic press upper buffer cylinder adjustment device according to claim 4, characterized in that: The motor is arranged on the side of the bracket facing away from the main shaft.

6. The hydraulic press upper buffer cylinder adjustment device according to claim 1, characterized in that: The upper crossbeam (11) is provided with an overtravel monitoring device (10) matched with the upper die of the hydraulic press, the overtravel monitoring device comprising a T-shaped buffer channel (100) arranged on the upper crossbeam, a buffer head (101) installed on the T-shaped buffer channel, a buffer rod arranged in the lower hole of the T-shaped buffer channel and connected to the buffer head, a buffer spring (102) arranged on the top of the buffer head and located in the T-shaped buffer channel, and a serpentine buffer air gap (103) arranged on the top of the T-shaped buffer channel and extending downward from the side wall of the T-shaped buffer channel, wherein the serpentine buffer air gap is provided with a solution; The upper crossbeam is provided with a vertical through hole (105) at the outlet of the serpentine buffer air gap, the vertical through hole (105) is provided with a multi-layer pressure membrane (106), and a solution sensing device (107) located below the pressure membrane is provided in the vertical through hole.

7. A hydraulic press having two main shafts arranged at an upper crossbeam, characterized in that: A hydraulic press upper buffer cylinder adjustment device as described in any one of claims 1 to 6 is arranged at each main shaft.

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