A new front support device and shearing machine

Abstract

The present invention belongs to the technical field of forging machines, and more specifically, relates to a front support device for a shearing machine and a shearing machine, that is, a safe, simple and convenient adjustment method is used to complete the stepless adjustment of the front support of a three-point shearing machine. The front support device is a stepless adjustment structure, and the front support device includes a mounting seat, a mounting surface is provided on the mounting seat, a mounting cavity is arranged inside the mounting seat, a disc spring and a guide shaft are installed inside the mounting cavity, and a fine-thread top shaft capable of steplessly adjusting the guide shaft is arranged on the mounting seat, one end of the guide shaft is exposed outside the mounting seat and a roller is installed through a pin shaft. The complicated and rough adjustment method of the conventional front support device is completely avoided, and the fine thread can achieve fine adjustment.

Description

Technical Field

[0001] The invention belongs to the technical field of forging machines, and more specifically, relates to a front support device for a shearing machine, which uses a safe, simple and convenient adjustment method to complete the stepless adjustment of the front support of a three-point shearing machine. Background Art

[0002] Conventional front support devices (such as Figure 8 and Fig. 9 The front support (as shown in the figure) is installed on the front panel of the three-point shearing machine, and forms a three-point supported stable guide structure with the upper and lower supports at the rear, maintaining a stable blade gap and an inward inclination angle of the tool holder to ensure the shearing quality. Therefore, the rollers of the three fulcrums must fit closely to the guide rails during the shearing process. The front support is also provided with a number of disc springs. The pressing force of the front support rollers on the guide rail plate can be adjusted by reducing or increasing the number of flat pads between the pressure cover and the front panel (under normal circumstances, the maximum positive pressure during normal shearing should be slightly less than the elastic force generated by the compression of a number of disc springs). This can not only make the three fulcrums fit closely to the guide rail surface, but also ensure safety under the protection of the disc springs when ultra-high pressure is generated during the shearing process. However, this conventional structure requires all the screws on the gland to be removed in turn during adjustment, and then flat washers are added or removed before the screws are installed. The thickness of the flat washers added or removed on each screw is different, resulting in different forces on the screws at each position, and smooth infinite adjustment is not possible. There are many uncertain factors, which not only wastes time and increases labor intensity during debugging, but also reduces the service life of the machine tool due to uneven force. Improper operation also has the risk of affecting the shearing quality. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies in the prior art, and therefore a new front support device and shearing machine with stepless adjustment are proposed.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A novel front support device is a stepless adjustment structure. The front support device includes a mounting seat, a mounting surface is provided on the mounting seat, a mounting cavity is arranged inside the mounting seat, a flexible support body is installed inside the mounting cavity, a fine-tooth top shaft that can steplessly adjust the flexible support body is arranged on the mounting seat, one end of the flexible support body is exposed outside the mounting seat and a roller is installed through a pin shaft.

[0006] A further improved scheme is made on the basis of the above-mentioned new front support scheme, in which the flexible support body includes a disc spring and a guide shaft, one end of the guide shaft abuts against the disc spring, and the other end is located on the outside of the mounting seat and connected to the roller, and the fine-tooth top shaft passes through the disc spring and the end portion is socketed in the guide shaft.

[0007] A further improved scheme is made on the original basis of the above-mentioned new front support scheme, wherein the flexible support body includes a disc spring and a guide shaft, one end of the guide shaft is located on the outside of the mounting seat and is connected to the roller, the other end is located inside the mounting cavity and is socketed on the inner side of the disc spring and a stopper is arranged on the end portion to abut the disc spring, and the stopper and the fine-thread top shaft are abutted and matched via a transfer ball.

[0008] A further improved solution is made based on the above-mentioned novel front support solution, in which positioning pins are arranged on the mounting surface.

[0009] A further improved solution is made based on the above-mentioned novel front support solution, in which the thread on the fine-pitch top shaft is matched with a nut and the nut is located outside the mounting seat.

[0010] A further improved solution is made based on the above-mentioned novel front support solution, in which a nylon plate is installed at the end of the pin shaft, and the nylon plate is attached to the inner side installation surface of the wall panel when the fine-thread top shaft adjusts the roller.

[0011] A further improved scheme is made based on the above-mentioned new front support scheme, in which at least one guide belt is arranged between the outer wall of the guide shaft and the inner wall of the installation cavity, and a socket is arranged at the end of the guide shaft located inside the installation cavity for installing the disc spring.

[0012] A plate shearing machine comprises the front supporting device as described above.

[0013] A further improved scheme based on the above-mentioned shearing machine scheme also includes an upper movable support point on the upper part of the tool holder and a rear support point on the rear part of the tool holder.

[0014] A further improved scheme is made on the basis of the above-mentioned shearing machine scheme, in which the upper movable support point slides up and down relative to the tool holder and the bottom of the upper movable support point is installed in abutment with the tool holder via a return piece. When adjusting the blade gap, the upper movable support point rotates relative to the tool holder and the bottom is installed in abutment with the tool holder via a return piece.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The new front support device for the shearing machine described in this application completely abandons the conventional design concept. The entire front support device is installed on the inner mounting surface of the machine wall panel, fixed by screws, positioned by positioning pins, and the roller is connected by a pin shaft and a guide shaft. When adjusting the elastic force of the disc spring, use a wrench tool to rotate the fine-thread top shaft to drive the disc spring to compress and push the guide shaft to move, so that the front support roller and the front guide plate of the tool holder can be closely fitted. After adjustment, rotate the locking nut to prevent the thread from loosening. The nylon plate is fitted on the inner mounting surface of the wall panel to prevent the guide shaft from rotating during work and ensure that the roller rolls in the vertical direction. Because it is a fine-thread top shaft adjustment, the complicated and rough adjustment method of the conventional front support device is completely avoided, and the fine thread can achieve fine adjustment.

[0017] The present application seeks to protect a shearing machine that adopts the new front support device, which passes through an upper movable support point and a rear support point, and the upper movable support point slides up and down relative to the tool holder and the bottom of the upper movable support point is installed in abutment with the tool holder via a return piece. When adjusting the blade gap, the upper movable support point rotates relative to the tool holder and the bottom is installed in abutment with the tool holder via a return piece. When adjusting the blade gap, the blade angle of the tool holder can be adjusted by using the return piece and the oil cylinder of the upper movable support point, so that the top oil cylinder can slide up and down relative to the tool holder guide plate and can rotate a certain angle at the same time.

[0018] The front support device of the shearing machine of the present application can meet the debugging requirements of the conventional front support in a shorter time through simple operation, realize stepless adjustment processing and more precise adjustment accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the front support device of the present invention;

[0020] Figure 2 is a cross-sectional view of the overall structure of the front support device of the present invention;

[0021] Figure 3 It is a schematic diagram of the overall structure of another form of the front support device of the present invention;

[0022] Figure 4 It is a side view schematic diagram of the three-point structure for adjusting the blade gap of the shearing machine of the present invention;

[0023] Figure 5 It is a schematic diagram of the back of the shearing machine of the present invention (the rear tool holder guide plate on the right side is not installed, and the front and rear tool holder guide plates on the left side are installed);

[0024] Figure 6 It is a cross-sectional view of the upper movable support point for adjusting the clearance of the shearing machine blade of the present invention;

[0025] Figure 7 It is a cross-sectional view of the rotating body of the shearing machine of the present invention;

[0026] Figure 8 It is a schematic diagram of the three-point structure of the original shearing machine blade gap adjustment;

[0027] Fig. 9 This is a schematic diagram of the original front support structure of the shearing machine.

[0028] In the figure: 10, mounting seat; 11, mounting cavity; 12, mounting surface; 13, disc spring; 14, guide shaft; 15, roller; 16, fine-thread top shaft; 17, nut; 18, nylon plate; 19, pin shaft; 110, locating pin; 111, guide belt; 112, socket slot; 20, upper movable support point; 21, fixed seat; 22, cylinder; 23, semicircular block; 24, tool holder guide plate; 25, return member; 26, rotating body; 30, rear support point. Implementation

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] Example 1: Figure 1 to Figure 2 As shown, a novel front support device is a stepless adjustment structure, comprising a mounting seat 10, a mounting surface 12 is provided on one side of the mounting seat 10, a positioning pin 110 is arranged on the mounting surface 12, the mounting surface 12 is mounted on the wall panel by bolts, a mounting cavity 11 is arranged inside the mounting seat 10, a disc spring 13 and a guide shaft 14 are installed inside the mounting cavity 11, and the end of the guide shaft 14 is in contact with the disc spring 13, one end of the guide shaft 14 is exposed outside the mounting seat 10 and a roller 15 is installed through a pin shaft 19, a fine-thread top shaft 16 is also installed on the mounting seat 10, and the fine-thread top shaft 16 passes through the disc spring 13 and the end portion is socketed in the guide shaft 14.

[0032] When in use, the mounting surface 12 is fixed to a predetermined wall panel by bolts and positioning pins 110. By adjusting the fine-thread top shaft 16, the disc spring 13 can be squeezed to move the guide shaft 14 and the roller 15 backwards. The roller 15 squeezes the tool holder guide rail, thereby tightening the tool holder or adjusting the blade clearance.

[0033] Example 2: Figure 3As shown, the difference from the above-mentioned embodiment is that: the guide shaft 14 is inserted into the inner side of the disc spring 13 and a stopper is arranged at the end thereof to abut against the disc spring 13, and the stopper and the fine-thread top shaft 16 are abutted and matched via a transfer ball. Through the adjustment of the fine-thread top shaft 16, mechanical transmission is performed via the transfer ball, so that the guide shaft 14 can squeeze the disc spring 13 while ensuring stepless adjustment. The arrangement of the transfer ball can effectively reduce the tangential force during the adjustment process. If the adjustment structure of the above-mentioned embodiment 1 is adopted, there will be a tangential force between the disc spring 13 and the fine-thread top shaft 16 during the adjustment process. Since the blade clearance is reasonably adjusted according to the needs of the plate, in actual production, the plate is often not of the same specification or type, and the blade clearance often needs to be adjusted frequently, which will cause damage to the disc spring 13 or the fine-thread top shaft 16. If the fine-thread top shaft 16 and the guide shaft 14 are directly arranged in contact with each other, due to the contact between the roller 15 and the tool holder guide rail, there will be a mutual pressure force between the guide shaft 14 and the fine-thread top shaft 16 before adjustment. Due to the existence of this force, there will be a sliding tangential force during the adjustment process, which will greatly increase the adjustment strength and difficulty, and reduce the convenience. By adopting the solution of this embodiment, the sliding mode of the ends of the guide shaft 14 and the fine-thread top shaft 16 is changed to a rolling mode, which will greatly reduce the adjustment strength and difficulty, and significantly improve the convenience.

[0034] Example 3: Figures 1 to 3 As shown, the following improvement is made on the basis of the above embodiment, the fine thread top shaft 16 is threaded with a nut 17 and the nut 17 is located outside the mounting seat 10. The nut 17 can lock the hoarse top shaft 16 to prevent accidental contact and change of the pressure stroke of the fine thread top shaft 16.

[0035] Example 4: Figures 1 to 3 As shown, the following improvements are made on the basis of the above embodiment: a nylon plate 18 is installed at the end of the pin shaft 19, and the nylon plate 18 is attached to the inner mounting surface 12 of the wall panel when the fine-thread top shaft 16 adjusts the roller 15. When the fine-thread top shaft 16 adjusts the forward movement of the roller 15, due to the existence of the nylon plate 18, the roller 15 moves linearly along the wall panel surface, and the existence of the nylon plate 18 can ensure long-term use and avoid rapid wear.

[0036] Example 5: Figure 2 As shown, the following improvements are made on the basis of the above embodiment: at least one guide belt 111 is arranged between the outer wall of the guide shaft 14 and the inner wall of the installation cavity 11, and a socket 112 is arranged at the end of the guide shaft 14 located inside the installation cavity 11 for installing the disc spring 13. The guide belt 111 can play a wear-resistant sealing effect, and the disc spring 13 is restricted through the socket 112 to prevent the disc spring 13 from deviating and affecting the pressure of the front support.

[0037] like Figures 1 to 7As shown, a shearing machine includes the front support device as described in the above embodiment, and also includes an upper movable support point 20 on the upper part of the tool holder and a rear support point 30 on the rear part of the tool holder;

[0038] Among them: Figures 4 to 7 As shown, the upper movable support point 20 slides up and down relative to the tool holder and the bottom of the upper movable support point 20 abuts against the tool holder through the action of the return member 25 on the tool holder. When adjusting the blade gap, the upper movable support point 20 rotates relative to the tool holder guide plate and the bottom abuts against the tool holder through the action of the return member 25 (return cylinder). The rear support point 30 is a traditional rear support point structure.

[0039] The upper movable support point 20 includes a fixed seat 21 installed on the tool holder. The top of the fixed seat 21 and the oil cylinder 22 are arranged to abut against each other through a semicircular block 23 under the action of the return member 25 (return oil cylinder) on the upper tool holder. A rotating body 26 that rotates relative to the tool holder guide plate 24 is arranged on the oil cylinder 22, and the rotating body 26 slides up and down relative to the tool holder guide plate 24. When adjusting the blade gap, the existence of the semicircular block 23 can make the piston rod of the oil cylinder 22 rotate a certain angle relative to the tool holder. At the same time, the top of the piston rod of the return member 25 abuts against the top of the rear side of the tool holder, and cooperates with the abutment of the piston rod of the oil cylinder 22 through the semicircular block 23 to clamp the fixed seat 21. When adjusting the blade gap, the oil cylinder 22 can rotate the oil cylinder 22 to a certain angle through the rotating body 26, thereby completing the adjustment of the blade gap.

[0040] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The replacement may be a replacement of a part of the structure, device, method step, or a complete technical solution. Any equivalent replacement or change according to the technical solution and the inventive concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A shearing machine, characterized in that: The front support device comprises a front support device, which is a stepless adjustment structure. The front support device is installed on the inner mounting surface of the machine wall panel. The front support device comprises a mounting seat (10). The mounting seat (10) is provided with a mounting surface (12). The mounting seat (10) is provided with a mounting cavity (11). A flexible support body is installed in the mounting cavity (11). The mounting seat (10) is provided with a fine thread top shaft (16) capable of steplessly adjusting the flexible support body. One end of the flexible support body is exposed outside the mounting seat (10) and is provided with a roller (15) via a pin shaft (19). A nylon plate (18) is installed at the end of the pin shaft (19). When the fine thread top shaft (16) adjusts the roller (15), the nylon plate (18) is attached to the inner mounting surface (12) of the wall panel. It also includes an upper movable support point (20) on the upper part of the tool holder and a rear support point (30) on the rear part of the tool holder, wherein the upper movable support point (20) is slidably matched with the tool holder up and down, and the bottom of the upper movable support point (20) is mounted in contact with the tool holder via a return member (25); The upper movable support point (20) comprises a fixed seat (21) mounted on the tool holder, the top of the fixed seat (21) and the oil cylinder (22) are arranged in contact with each other through a semicircular block (23) under the action of the return member (25) pushing up the tool holder, and a rotating body (26) is arranged on the oil cylinder (22) to rotate relative to the tool holder guide plate (24), and the rotating body (26) is arranged to slide up and down relative to the tool holder guide plate (24); When adjusting the blade clearance, the upper movable support point (20) rotates relative to the tool holder guide plate and the bottom is mounted in contact with the tool holder via the return member (25); When adjusting the blade clearance, the return member and the oil cylinder at the upper movable support point cooperate to adjust the blade angle of the tool holder, and the top oil cylinder slides up and down relative to the tool holder guide plate and rotates at a certain angle at the same time.

2. A shearing machine according to claim 1, characterized in that: The flexible support body comprises a disc spring (13) and a guide shaft (14); an end of the guide shaft (14) is in contact with the disc spring (13), and the other end is located outside the mounting seat (10) and connected to the roller (15); a fine-thread top shaft (16) passes through the disc spring (13) and an end portion is socketed in the guide shaft (14).

3. A shearing machine according to claim 1, characterized in that: The flexible support body comprises a disc spring (13) and a guide shaft (14); one end of the guide shaft (14) is located outside the mounting seat (10) and connected to the roller (15); the other end is located inside the mounting cavity (11) and is socketed on the inner side of the disc spring (13); and a stopper is arranged at the end thereof for contacting the disc spring (13); the stopper and the fine-thread top shaft (16) are contact-fitted via a transfer ball.

4. A shearing machine according to claim 1, characterized in that: Positioning pins (110) are arranged on the mounting surface (12).

5. A plate shearing machine according to claim 1, characterized in that: The fine-thread top shaft (16) has a thread matched with a nut (17), and the nut (17) is located outside the mounting seat (10).

6. A plate shearing machine according to claim 2, characterized in that: At least one guide belt (111) is arranged between the outer wall of the guide shaft (14) and the inner wall of the installation cavity (11), and a socket (112) is arranged at the end of the guide shaft (14) located inside the installation cavity (11) for installing the disc spring (13).

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