Unwinding mechanism for feeding of punching machine

Abstract

The utility model relates to the technical field of punching equipment, in particular to an unwinding mechanism for feeding of a punching machine, which comprises a rack, a main shaft is rotatably arranged on the rack, a driving part for driving the main shaft to rotate is arranged on the rack, and a supporting assembly for supporting a coiled material and a limiting part for limiting movement of the coiled material are arranged on the main shaft. A roll pressing assembly is arranged on the machine frame and comprises a roll pressing frame arranged on the ground, a pressing roller is arranged on the roll pressing frame in a sliding mode, the pressing roller is used for pressing a coiled material on the main shaft, and a tensioning piece for driving the pressing roller to press the coiled material is arranged on the machine frame. The device has the effects that coiled materials are automatically pressed and prevented from loosening, and the continuous stamping quality of products is improved.

Description

Technical Field

[0001] The present application relates to the technical field of stamping equipment, and in particular to an unwinding mechanism for feeding a stamping machine. Background Art

[0002] A continuous stamping press is a device used to shape raw materials by cutting, punching, stretching, and other processes. It is commonly referred to as a stamping machine, press, oil press, or hydraulic press, and is primarily used to press large, specialized equipment such as containers. During operation, a continuous stamping press requires continuous material transport, necessitating the use of an unwinding mechanism and a flattening machine. After unwinding and flattening, the coiled material enters the continuous stamping machine for stamping. The unwinding mechanism is used to hold the coiled material, ensuring stability and flatness during transport, facilitating continuous blanking.

[0003] Chinese patent publication number CN214720079U discloses an aluminum cover stamping machine, comprising a frame, an unwinding mechanism provided on the frame for unwinding an aluminum strip, and an oiling mechanism, a feeding mechanism, a quantitative feeding mechanism, a stamping mechanism, a collecting mechanism, and a winding mechanism sequentially provided on the frame along the unwinding direction of the aluminum strip.

[0004] In the above technology, when the unwinding mechanism unwinds the material, the wound coil becomes loose during the unwinding process because the unwinding end of the coil is in a loose state, thereby affecting the subsequent continuous stamping of the coil and affecting the surface flatness of the stamped product, which is a deficiency. Utility Model Content

[0005] In order to improve the problem of the wound coil becoming loose during the unwinding process, the present application provides an unwinding mechanism for feeding a punching machine.

[0006] The unwinding mechanism for feeding a punching machine provided in this application adopts the following technical solution:

[0007] A rewinding mechanism for feeding a stamping machine comprises a frame, a main shaft is rotatably provided on the frame, a driving member for driving the main shaft to rotate is provided on the frame, a supporting assembly for supporting a coil and a limiting member for limiting the movement of the coil are provided on the main shaft, a pressing assembly is provided on the frame, the pressing assembly comprises a pressing frame provided on the ground, a pressing roller is slidably provided on the pressing frame, the pressing roller is used to press the coil on the main shaft, and a tensioning member for driving the pressing roller to press the coil is provided on the frame.

[0008] By adopting the above technical solution, workers put the coil on the main shaft through the lifting equipment, and support and fix the coil through the support assembly, and then limit the movement of the coil in the axial direction of the main shaft through the limiter. After that, the tensioning member on the pressing roll frame presses the pressure roller in the radial direction of the main shaft axis. Finally, the driving member drives the main shaft to rotate and unwind the coil, thereby reducing the possibility of the coil becoming loose during the unwinding process, which is beneficial to improving the continuity of the coil unwinding and improving the surface flatness of the stamping product.

[0009] Optionally, the tensioning member includes an electric cylinder arranged on the roll pressing frame and electrically connected to the control system, a push block is arranged on the piston rod of the electric cylinder, a guide groove for the push block to slide is opened on the roll pressing frame, a sliding frame is slidingly arranged on the guide groove, the pressure roller is rotatably arranged on the sliding frame, a pressure sensor electrically connected to the control system is arranged on the push block, and a compression spring is supported between the sensing end of the pressure sensor and the sliding frame.

[0010] By adopting the above technical solution, as the coil is continuously unwound, the diameter of the coil continues to decrease, and the pressure sensor feeds back the pressure changes from the pressure roller to the control system. The control system drives the electric cylinder, and the piston rod of the electric cylinder drives the sensing end of the pressure sensor close to the compression spring through the push block. The reaction force of the compression spring causes the sliding frame to drive the pressure roller to press the coil, so that the coil maintains a stable compression state. At the same time, the compression spring can also buffer the vibration of the coil caused by the vibration of the frame, which is beneficial to reduce the possibility of damage to the coil by the pressure roller.

[0011] Optionally, the driving member includes a driving motor disposed on the frame and electrically connected to a control system, and a reduction gear box is disposed between an output shaft of the driving motor and the main shaft.

[0012] By adopting the above technical solution, the control system can make the main shaft rotate continuously and stably through the drive motor and the reduction box, so that the coil can be unwound continuously and smoothly.

[0013] Optionally, the support assembly includes a plurality of support plates uniformly arranged circumferentially on the main shaft, the cross-section of the support plate is C-shaped, a plurality of brackets are hinged between the support plate and the main shaft, and the plurality of brackets are arranged along the axial direction of the main shaft, and the main shaft is provided with a C-shaped convex support member that drives the support plate to support the coil.

[0014] By adopting the above technical solution, when the supporting member drives the C-shaped convex surface of the support plate to support the coil, the bracket continuously rotates and stabilizes the support plate, and multiple support plates make the coil evenly stressed in the circumferential direction, thereby reducing the possibility of deformation of the coil due to uneven stress, and at the same time helping to improve the adaptability to coils of different inner diameters.

[0015] Optionally, the interior of the main shaft is hollow and one end is open, and the supporting member includes a driving screw coaxially rotatably arranged on the main shaft, a tensioning block is threadedly connected to the driving screw, a tensioning rod is hinged between the tensioning block and the support plate, an avoidance groove for the tensioning rod to rotate is provided between the inner and outer side walls of the main shaft, a limiting rod is provided on the avoidance groove of the main shaft, and a waist-shaped hole is provided on the tensioning rod for the limiting rod to pass through and slide.

[0016] By adopting the above technical solution, the worker rotates the driving screw, and under the limiting action of the tensioning rod and the avoidance groove, the driving screw causes the tensioning block to move along the axial direction of the main shaft. At the same time, under the action of the limiting rod, the waist-shaped hole on the tensioning rod slides and rotates with the limiting rod, so that the tensioning rod supports the support plate to unfold, and multiple support plates are unfolded at the same time and gradually abut against the inner diameter of the coil, thereby achieving the fixation of the coil.

[0017] Optionally, the limiting member includes a limiting frame arranged on both sides of the coil, the limiting frame is provided with an anti-slip ear plate, the support plate is located between the anti-slip ear plate and the limiting frame, and the limiting frame is bolted with an anti-loosening bolt, and the anti-loosening bolt is used to support the support plate.

[0018] By adopting the above technical solution, workers place the limit frames at both ends of the support plate, and then tighten the anti-loosening bolts. The anti-loosening bolts press the support plate against the anti-slip ear plate, thereby achieving limit fixation of both ends of the coil.

[0019] Optionally, a friction pad is provided between the limiting frame and the support plate.

[0020] By adopting the above technical solution, the friction pad increases the friction between the friction pad and the support plate, thereby reducing the possibility that the limit frame will be separated from the support plate during the process of the limit frame rotating with the support plate.

[0021] Optionally, a leveling frame is provided on the frame, and a plurality of groups of leveling rollers are rotatably provided on the leveling frame, and the plurality of groups of leveling rollers are distributed on both sides of the unwound coil.

[0022] By adopting the above technical solution, the unwound coil passes through multiple sets of leveling rollers on the leveling frame, thereby achieving the leveling effect of the coil. No additional leveling equipment is required to level the coil, which is beneficial to reducing the occupied area of ​​the site.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Workers use lifting equipment to put the coil on the main shaft and support and fix the coil with the support assembly. Then, the limiter restricts the movement of the coil in the axial direction of the main shaft. Then, the tensioner on the roll press frame presses the roller in the radial direction of the main shaft axis. Finally, the drive unit drives the main shaft to rotate and unwind the coil. This reduces the possibility of the coil becoming loose during the unwinding process, which is beneficial to improving the continuity of the coil unwinding and the surface flatness of the stamping product.

[0025] 2. As the coil is unwound, its diameter decreases. The pressure sensor feeds back the pressure change from the pressure roller to the control system. The control system drives the electric cylinder. The piston rod of the electric cylinder drives the sensing end of the pressure sensor close to the compression spring through the push block. The reaction force of the compression spring causes the sliding frame to drive the pressure roller to press the coil, thereby maintaining a stable compression state. At the same time, the compression spring can also buffer the vibration of the coil caused by the vibration of the frame, which helps to reduce the possibility of damage to the coil by the pressure roller.

[0026] 3. The worker rotates the driving screw. Under the restriction of the tensioning rod and the avoidance groove, the driving screw moves the tensioning block along the axis of the main shaft. At the same time, under the action of the limiting rod, the waist-shaped hole on the tensioning rod slides and rotates with the limiting rod, so that the tensioning rod pushes the support plate to unfold. Multiple support plates are unfolded at the same time and gradually abut against the inner diameter of the coil, thereby fixing the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of an embodiment of the present application.

[0028] Figure 2 It is a structural diagram of the positional relationship among the roll press frame, the pressure roller and the electric cylinder in the embodiment of the present application.

[0029] Figure 3 It is a cross-sectional view used to reflect the positional relationship among the tensioning rod, the driving screw and the support plate in the embodiment of the present application.

[0030] Explanation of the accompanying reference numerals: 0, coil; 1, frame; 2, main shaft; 3, driving member; 31, driving motor; 32, reduction gear box; 4, supporting assembly; 41, supporting plate; 42, bracket; 43, supporting member; 431, driving screw; 432, tensioning block; 433, tensioning rod; 434, avoidance groove; 435, limiting rod; 436, waist-shaped hole; 5, limiting member; 51, limiting frame; 52, anti-slip ear plate; 53, anti-loosening bolt; 6, rolling assembly; 61, rolling frame; 62, pressing roller; 63, tensioning member; 631, electric cylinder; 632, pushing block; 633, guide groove; 634, sliding frame; 635, pressure sensor; 636, compression spring; 7, friction pad; 8, leveling frame; 9, leveling roller; 10, turning handle. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] An embodiment of the present application discloses an unwinding mechanism for feeding a punching machine.

[0033] Reference Figure 1 A unwinding mechanism for feeding a stamping machine includes a frame 1, a leveling frame 8 is bolted to the frame 1, and a plurality of sets of leveling rollers 9 are rotatably connected to the leveling frame 8. The plurality of sets of leveling rollers 9 are distributed on both vertical sides of the unwound coil 0, and a main shaft 2 with a hollow interior and an open end is rotatably connected to the frame 1.

[0034] Reference Figure 1 、 Figure 2 and Figure 3 A driving member 3 for driving the main shaft 2 to rotate is arranged on the frame 1. The driving member 3 includes a driving motor 31 bolted to the frame 1 and electrically connected to the control system. A reduction gearbox 32 is bolted to the frame 1 between the output shaft of the driving motor 31 and the main shaft 2. The main shaft 2 is coaxially connected to the output end of the reduction gearbox 32, and the output shaft of the driving motor 31 is coaxially connected to the input end of the reduction gearbox 32.

[0035] Reference Figure 1 、 Figure 2 and Figure 3 A support assembly 4 for supporting the coil 0 is arranged on the main shaft 2. The support assembly 4 includes a plurality of support plates 41 uniformly arranged circumferentially on the main shaft 2. The cross-section of the support plate 41 is C-shaped. Two brackets 42 are hinged between each support plate 41 and the main shaft 2. The two brackets 42 are arranged along the axial direction of the main shaft 2. A top support member 43 for driving the C-shaped convex surface of the support plate 41 to support the coil 0 is arranged on the main shaft 2.

[0036] Reference Figure 1 、 Figure 2 and Figure 3 The supporting member 43 includes a driving screw 431 coaxially connected to the main shaft 2, a rotating handle 10 is inserted into the driving screw 431, a tensioning block 432 is threadedly connected to the driving screw 431, a tensioning rod 433 is hinged between the tensioning block 432 and the support plate 41, and an avoidance groove 434 for the tensioning rod 433 to rotate is opened between the inner and outer side walls of the main shaft 2 along the axial direction of the main shaft 2, a limiting rod 435 is welded on the avoidance groove 434 of the main shaft 2, and a waist-shaped hole 436 for the limiting rod 435 to pass through and slide is opened on the tensioning rod 433.

[0037] The worker uses the lifting equipment to put the coil 0 on the support plate 41 on the main shaft 2, and then rotates the driving screw 431 by turning the handle 10. Under the restriction of the tensioning rod 433 and the avoidance groove 434, the driving screw 431 causes the tensioning block 432 to move along the axial direction of the main shaft 2.

[0038] At the same time, under the action of the limiting rod 435, the waist-shaped hole 436 on the tensioning rod 433 slides and rotates with the limiting rod 435, and the tensioning rod 433 rotates around the limiting rod 435 and supports the support plate 41. Multiple support plates 41 are unfolded at the same time and support the inner diameter of the coil 0 at the same time, thereby making the coil 0 round.

[0039] Reference Figure 1 、 Figure 2 and Figure 3 A limit member 5 is arranged on the main shaft 2 for limiting the movement of the coil 0 along the axial direction of the main shaft 2. The limit member 5 includes a limit frame 51 arranged on both sides of the coil 0. The cross-section of the limit frame 51 is triangular. An anti-slip ear plate 52 is welded on the limit frame 51, and the edge of the support plate 41 is located between the anti-slip ear plate 52 and the limit frame 51.

[0040] Reference Figure 1 、 Figure 2 and Figure 3 A friction pad 7 is arranged between the limit frame 51 and the support plate 41. The friction pad 7 can be made of rubber material. An anti-loosening bolt 53 is bolted to the limit frame 51. The anti-loosening bolt 53 is used to press the support plate 41 onto the anti-slip ear plate 52.

[0041] Reference Figure 1 、 Figure 2 and Figure 3 A roll pressing assembly 6 is arranged on the frame 1, and the roll pressing assembly 6 includes a roll pressing frame 61 placed on the ground. A pressure roller 62 is slidingly arranged on the roll pressing frame 61, and the pressure roller 62 is used to press the coil 0 fixed on the support plate 41. A tensioning member 63 is arranged on the frame 1 to drive the pressure roller 62 to press the coil 0.

[0042] Reference Figure 1 、 Figure 2 and Figure 3 The tensioning member 63 includes an electric cylinder 631 bolted to the roll pressing frame 61 and electrically connected to the control system. A push block 632 is welded on the piston rod of the electric cylinder 631. A guide groove 633 for the push block 632 to slide is provided on the roll pressing frame 61. A sliding frame 634 is slidingly arranged on the guide groove 633. The pressure roller 62 is rotatably connected to the sliding frame 634. A pressure sensor 635 electrically connected to the control system is arranged on the push block 632. A compression spring 636 is supported between the sensing end of the pressure sensor 635 and the sliding frame 634.

[0043] The worker puts the limit frame 51 on the support plates 41 on both sides of the coil 0, and then tightens the anti-loosening bolts 53. The anti-loosening bolts 53 support the support plates 41 and press the support plates 41 against the anti-slip ear plates 52. Then the worker moves the pressing frame 61 close to the coil 0 and presses the pressing roller 62 on the coil 0. Then the drive motor 31 is started through the control system. The drive motor 31 drives the main shaft 2 to rotate through the reduction box 32. The main shaft 2 rotates and unwinds the coil 0 through the support plate 41.

[0044] As the coil 0 is continuously unwound, the diameter of the coil 0 continues to decrease. The pressure sensor 635 feeds back the pressure changes transmitted from the pressure roller 62 to the control system. The control system drives the electric cylinder 631. The piston rod of the electric cylinder 631 drives the sensing end of the pressure sensor 635 to squeeze the compression spring 636 through the push block 632. The reaction force of the compression spring 636 pushes the sliding frame 634 close to the coil 0. The sliding frame 634 drives the pressure roller 62 to press the coil 0, so that the coil 0 is subjected to a stable compression force in the radial direction.

[0045] The implementation principle of the unwinding mechanism for feeding a stamping machine in an embodiment of the present application is as follows: a worker uses a lifting device to put the coil 0 on the support plate 41 on the main shaft 2, and then rotates the driving screw 431 by turning the handle 10. Under the limiting action of the tensioning rod 433 and the avoidance groove 434, the driving screw 431 causes the tensioning block 432 to move along the axial direction of the main shaft 2.

[0046] At the same time, under the action of the limiting rod 435, the waist-shaped hole 436 on the tensioning rod 433 slides and rotates with the limiting rod 435, and the tensioning rod 433 rotates around the limiting rod 435 and supports the support plate 41. Multiple support plates 41 are unfolded at the same time and support the inner diameter of the coil 0 at the same time, thereby making the coil 0 round.

[0047] The worker puts the limit frame 51 on the support plates 41 on both sides of the coil 0, and then tightens the anti-loosening bolts 53. The anti-loosening bolts 53 support the support plates 41 and press the support plates 41 against the anti-slip ear plates 52. Then the worker moves the pressing frame 61 close to the coil 0 and presses the pressing roller 62 on the coil 0. Then the drive motor 31 is started through the control system. The drive motor 31 drives the main shaft 2 to rotate through the reduction box 32. The main shaft 2 rotates and unwinds the coil 0 through the support plate 41.

[0048] As the coil 0 is continuously unwound, the diameter of the coil 0 continues to decrease. The pressure sensor 635 feeds back the pressure changes transmitted from the pressure roller 62 to the control system. The control system drives the electric cylinder 631. The piston rod of the electric cylinder 631 drives the sensing end of the pressure sensor 635 to squeeze the compression spring 636 through the push block 632. The reaction force of the compression spring 636 pushes the sliding frame 634 close to the coil 0. The sliding frame 634 drives the pressure roller 62 to press the coil 0, so that the coil 0 is subjected to a stable compression force in the radial direction.

[0049] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A unwinding mechanism for feeding a punching machine, characterized in that: The invention comprises a frame (1), a main shaft (2) being rotatably provided on the frame (1), a driving member (3) for driving the main shaft (2) to rotate being provided on the frame (1), a supporting assembly (4) for supporting a coiled material (0) and a limiting member (5) for limiting the movement of the coiled material (0) being provided on the main shaft (2), a pressing assembly (6) being provided on the frame (1), the pressing assembly (6) comprising a pressing frame (61) provided on the ground, a pressing roller (62) being slidably provided on the pressing frame (61), the pressing roller (62) being used for pressing the coiled material (0) on the main shaft (2), and a tensioning member (63) for driving the pressing roller (62) to press the coiled material (0) being provided on the frame (1).

2. The unwinding mechanism for feeding a punching machine according to claim 1, characterized in that: The tensioning member (63) includes an electric cylinder (631) arranged on the roll pressing frame (61) and electrically connected to the control system, a push block (632) is arranged on the piston rod of the electric cylinder (631), a guide groove (633) for the push block (632) to slide is opened on the roll pressing frame (61), a sliding frame (634) is slidably arranged on the guide groove (633), the pressure roller (62) is rotatably arranged on the sliding frame (634), a pressure sensor (635) electrically connected to the control system is arranged on the push block (632), and a compression spring (636) is supported between the sensing end of the pressure sensor (635) and the sliding frame (634).

3. The unwinding mechanism for feeding a punching machine according to claim 1, characterized in that: The driving member (3) includes a driving motor (31) arranged on the frame (1) and electrically connected to a control system, and a reduction gear box (32) is arranged between the output shaft of the driving motor (31) and the main shaft (2).

4. The unwinding mechanism for feeding a punching machine according to claim 1, characterized in that: The support assembly (4) comprises a plurality of support plates (41) uniformly arranged circumferentially on the main shaft (2), the cross section of the support plate (41) being C-shaped, a plurality of brackets (42) being hingedly connected between the support plate (41) and the main shaft (2), the plurality of brackets (42) being arranged along the axial direction of the main shaft (2), and a supporting member (43) for driving the C-shaped convex surface of the support plate (41) to support the coil (0) is provided on the main shaft (2).

5. The unwinding mechanism for feeding a punching machine according to claim 4, characterized in that: The main shaft (2) is hollow inside and open at one end. The supporting member (43) includes a driving screw (431) coaxially rotatably arranged on the main shaft (2). A tensioning block (432) is threadedly connected to the driving screw (431). A tensioning rod (433) is hinged between the tensioning block (432) and the support plate (41). An avoidance groove (434) for the tensioning rod (433) to rotate is provided between the inner and outer side walls of the main shaft (2). A limiting rod (435) is provided on the avoidance groove (434) of the main shaft (2). A waist-shaped hole (436) for the limiting rod (435) to pass through and slide is provided on the tensioning rod (433).

6. The unwinding mechanism for feeding a punching machine according to claim 4, characterized in that: The limiting member (5) comprises a limiting frame (51) arranged on both sides of the coil (0), an anti-slip lug (52) is provided on the limiting frame (51), the support plate (41) is located between the anti-slip lug (52) and the limiting frame (51), and an anti-loosening bolt (53) is bolted to the limiting frame (51), and the anti-loosening bolt (53) is used to support the support plate (41).

7. The unwinding mechanism for feeding a punching machine according to claim 6, characterized in that: A friction pad (7) is provided between the limiting frame (51) and the supporting plate (41).

8. The unwinding mechanism for feeding a punching machine according to claim 1, characterized in that: A leveling frame (8) is provided on the frame (1), and a plurality of groups of leveling rollers (9) are rotatably provided on the leveling frame (8), and the plurality of groups of leveling rollers (9) are distributed on both sides of the unwound coil (0).

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