A punching machine with bidirectional material feeding

Abstract

The present invention relates to the field of punching presses and discloses a punching press with bidirectional feeding. It includes a punching press body, a punching die assembly, a first feeding mechanism, and a second feeding mechanism. A first fixed die and a second fixed die are arranged at intervals on the punching press body. The punching die assembly is located between the first fixed die and the second fixed die, and the punching die assembly is slidably connected to the punching press body. When the punching die assembly moves towards the first fixed die for stamping, the punching die assembly is adapted to drive the second feeding mechanism to drive the metal sheet to move towards the direction close to the second fixed die for feeding; when the punching die assembly moves towards the second fixed die for stamping, the punching die assembly is adapted to drive the first feeding mechanism to drive the metal sheet to move towards the direction close to the first fixed die for feeding. The present invention effectively utilizes the kinetic energy during the return stroke of the punching die assembly, reduces the waste of kinetic energy, improves the production efficiency at the same time, reduces the cost, and improves the punching effect and precision.

Description

Technical Field

[0001] The present invention relates to the technical field of punching presses, and more particularly to a punching press with bidirectional feeding. Background Art

[0002] Punching presses are mainly used for punching various metal sheets into desired sheet metal parts. A punching press includes a frame, a fixed die disposed on the frame, a punching die located above the fixed die, and a feeding structure. The feeding structure is adapted to intermittently convey the metal sheet. After the metal sheet is conveyed onto the fixed die, the punching die descends to punch the metal sheet. Under the action of the feeding structure, the punching die can perform continuous punching. However, the existing feeding structure is a unidirectional feeding structure, so that the punching die can only perform punching on the metal sheet during the descending process, and the punching press is in an idle state during the ascending process, resulting in ineffective utilization of the kinetic energy during the ascending of the punching die and causing waste of kinetic energy. Summary of the Invention

[0003] To solve at least one of the above problems, the present invention provides a punching press with bidirectional feeding, which includes a punching press body, a punching die assembly, a first feeding mechanism, and a second feeding mechanism. A first fixed die and a second fixed die are spaced on the punching press body. The first feeding mechanism is adapted to convey a metal sheet onto the first fixed die, and the second feeding mechanism is adapted to convey a metal sheet onto the second fixed die. The punching die assembly is located between the first fixed die and the second fixed die, and the punching die assembly is slidably connected to the punching press body. When the punching die assembly moves towards the first fixed die for punching, the punching die assembly is adapted to drive the second feeding mechanism to drive the metal sheet to move towards the second fixed die for feeding, and the punching die assembly drives the first feeding mechanism to move away from the first fixed die. When the punching die assembly moves towards the second fixed die for punching, the punching die assembly is adapted to drive the first feeding mechanism to drive the metal sheet to move towards the first fixed die for feeding, and the punching die assembly drives the second feeding mechanism to move away from the second fixed die.

[0004] Optionally, the punching die assembly includes a punching die base, a first punching die, and a second punching die. The first punching die and the second punching die are respectively fixedly installed on the upper and lower sides of the punching die base. The first punching die is adapted to punch the metal sheet on the first fixed die, and the second punching die is adapted to punch the metal sheet on the second fixed die.

[0005] Optionally, the first feeding mechanism includes a first substrate, a first sliding frame, and a first clamping cylinder. The first substrate is connected to the punching press body. The first sliding frame is slidably connected to the first substrate, and the first sliding frame moves closer to or away from the first fixed die. The first clamping cylinder is fixedly disposed on the first sliding frame to clamp or release the metal sheet.

[0006] Optionally, the first feeding mechanism further includes a first connecting rope and a first pulley set adapted to change the pulling direction of the first connecting rope. One end of the first connecting rope is fixedly connected to the die assembly, and the other end is connected to the first sliding frame.

[0007] Optionally, the first feeding mechanism further includes a first tension spring. One side of the first tension spring is connected to the first sliding frame, and the other side is connected to the first base plate. When the die assembly approaches the first fixed die, the first tension spring is adapted to drive the first sliding frame to move away from the first fixed die. When the die assembly punches the metal sheet on the first fixed die, the first clamping cylinder clamps the metal sheet.

[0008] Optionally, the second feeding mechanism includes a second base plate, a second sliding frame, and a second clamping cylinder. The second base plate is connected to the punching machine body. The second sliding frame is slidably connected to the second base plate, and the second sliding frame moves closer to or away from the second fixed die. The second clamping cylinder is fixedly arranged on the second sliding frame to clamp or release the metal sheet.

[0009] Optionally, the second feeding mechanism further includes a second connecting rope and a second pulley set adapted to change the pulling direction of the second connecting rope. One end of the second connecting rope is fixedly connected to the die assembly, and the other end is connected to the second sliding frame.

[0010] Optionally, the second fixed die is located above the first fixed die, and an electromagnet device is arranged inside the second fixed die. After the die assembly punches the metal sheet on the second fixed die, the electromagnet device is adapted to adsorb the punched sheet.

[0011] Optionally, a guiding channel plate is arranged on one side of the second sliding frame close to the second fixed die. A driving cylinder is arranged on the second sliding frame, and the telescopic rod of the driving cylinder is connected to the guiding channel plate. When the guiding channel plate moves to directly below the second fixed die, the electromagnet device is powered off to drive the punched sheet to fall onto the guiding channel plate.

[0012] Optionally, coil support frames are arranged on both opposite sides of the punching machine body. The coil support frames are adapted to support the coiled metal sheet. When the corresponding coil support frame is subjected to the pulling force of the first feeding mechanism or the second feeding mechanism, it can drive the coiled metal sheet to rotate to achieve feeding; the strip-shaped waste formed after punching the metal sheet on one coil support frame is adapted to wind around the other coil support frame.

[0013] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0014] 1. When the die assembly descends or ascends, it will punch the metal sheets on the first fixed die and the second fixed die respectively, so that the kinetic energy of the die assembly during the return stroke is effectively utilized, reducing the waste of kinetic energy and improving production efficiency;

[0015] 2. When the punch assembly moves toward the first fixed die, it will drive the second feeding mechanism to drive the corresponding metal sheet to move toward the second fixed die to complete the loading. At the same time, it will also drive the first feeding mechanism to move away from the first fixed die to make way and re-clamp the metal sheet to prepare for the next loading. The whole process only needs to rely on the driving source of the punch assembly, which reduces the driving source and reduces the cost. The above three actions are performed simultaneously, which further improves the production efficiency.

[0016] 3. The first pulley block and the second pulley block can change the direction of the pulling force of the first connecting rope and the second connecting rope without interfering with the movement of the metal plate and other components;

[0017] 4. Since the punching machine body will vibrate when it is running, if the length of the metal sheet laid flat is long, the vibration amplitude of the metal sheet at the punching position will become larger. Therefore, during punching, the corresponding clamping cylinder will clamp the metal sheet to keep the clamping cylinder and the metal sheet at the punching position stable, thereby improving the punching effect and accuracy;

[0018] 5. Since the second fixed die is located above the first fixed die, and the electromagnet device will absorb the plate punched off the second fixed die, after the punching is completed, the guide channel plate will move with the second sliding frame and make the plate fall on the guide channel plate for diversion, so that the plate is not easy to fall under the action of gravity and cause damage to the plate or other parts of the punching machine body;

[0019] 6. Since the guide plate moves synchronously with the second sliding frame, and the first sliding frame moves synchronously with the die assembly, when the die assembly needs to descend after punching the metal sheet on the second fixed die, the driving cylinder will drive the guide plate to move to the bottom of the second fixed die in time to receive the punched sheet, which can shorten the distance between adjacent punching positions on the same metal sheet and reduce the waste of metal sheets. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of a punch press with bidirectional feeding in an embodiment of the present invention;

[0021] Figure 2 It is a structural diagram of a punching machine body, a die assembly, a first feeding mechanism and a second feeding mechanism in an embodiment of the present invention;

[0022] Figure 3 An exploded view of the die assembly and the first feeding mechanism in an embodiment of the present invention;

[0023] Figure 4 This is a structural diagram of the punching die assembly and the second feeding mechanism in the embodiment of the present invention;

[0024] Figure 5 This is an exploded view of the punching die assembly and the second feeding mechanism in the embodiment of the present invention Figure 1 ;

[0025] Figure 6 This is an exploded view of the punching die assembly and the second feeding mechanism in the embodiment of the present invention Figure 2 。

[0026] Explanation of reference numerals: 1. Punch body; 11. First fixed die; 12. Second fixed die; 121. Electromagnet device; 13. Coil support frame; 14. First roller clamping group; 15. First non-powered roller conveyor belt; 16. Second roller clamping group; 17. Second non-powered roller conveyor belt; 2. Punching die assembly; 21. Punching die base; 22. First punching die; 23. Second punching die; 3. First feeding mechanism; 31. First substrate; 32. First sliding frame; 33. First clamping cylinder; 34. First connecting rope; 35. First pulley group; 36. First tension spring; 4. Second feeding mechanism; 41. Second substrate; 42. Second sliding frame; 43. Second clamping cylinder; 44. Second connecting rope; 45. Second pulley group; 46. Second tension spring; 47. Driving cylinder; 48. Guide channel plate. Detailed implementation manners

[0027] To make the above objects, features and advantages of the present invention more obvious and understandable, the following further describes the present application in detail with reference to the accompanying Figures 1-6 drawings.

[0028] The embodiment of the present invention provides a punching press with bidirectional feeding. Refer to Figure 1 and Figure 2, the punching machine with double-direction feeding includes a punching machine body 1, a punching die assembly 2, a first feeding mechanism 3 and a second feeding mechanism 4. A first fixed die 11 and a second fixed die 12 are installed on the punching machine body 1 at intervals in the vertical direction. The first feeding mechanism 3 is adapted to convey metal sheets onto the first fixed die 11, and the second feeding mechanism 4 is adapted to convey metal sheets onto the second fixed die 12. The punching die assembly 2 is located between the first fixed die 11 and the second fixed die 12, and the punching die assembly 2 is slidably connected to the punching machine body 1. When the punching die assembly 2 moves towards the first fixed die 11 for stamping, the punching die assembly 2 is adapted to drive the second feeding mechanism 4 to drive the metal sheet to move towards the direction close to the second fixed die 12 for feeding, and the punching die assembly 2 drives the first feeding mechanism 3 to move away from the first fixed die 11. When the punching die assembly 2 moves towards the second fixed die 12 for stamping, the punching die assembly 2 is adapted to drive the first feeding mechanism 3 to drive the metal sheet to move towards the direction close to the first fixed die 11 for feeding, and the punching die assembly 2 drives the second feeding mechanism 4 to move away from the second fixed die 12.

[0029] Refer to Figure 1 With Figure 2 , coil support frames 13 are arranged on both the left and right sides of the punching machine body 1, and each coil support frame 13 is equipped with a coiled metal sheet. The first feeding mechanism 3 and the second feeding mechanism 4 are respectively located on the left and right sides of the punching machine body 1, and the two coiled metal sheets are fed respectively through the first feeding mechanism 3 and the second feeding mechanism 4. After the coiled metal sheet is subjected to a tensile force, it will rotate to spread out the metal sheet. If the metal sheet after stamping is a strip-shaped waste material, then the strip-shaped waste material formed by the metal sheet on one coil support frame 13 is adapted to be wound around the other coil support frame 13, and there is no need to additionally set up a support coiling rack for winding and collecting the strip-shaped waste material, thereby reducing the cost. In addition, due to the existence of the first feeding mechanism 3 and the second feeding mechanism 4, the coil support frame 13 only needs to be an ordinary coil support frame 13, and there is no need to purchase a coil support frame 13 with electric rotation, so that the cost is reduced.

[0030] A driving mechanism (not shown in the figure) is arranged inside the punching machine body 1. The driving mechanism is a common existing mechanism in the punching machine field and will not be elaborated here too much. The driving mechanism is connected to the punching die assembly 2 to drive the punching die assembly 2 to perform reciprocating motion in the vertical direction for stamping.

[0031] Combined with Figure 1 Refer to Figure 2 With Figure 3, the punching die assembly 2 includes a punching die base 21, a first punching die 22 and a second punching die 23. The punching die base 21 is connected to the driving mechanism to reciprocate in the vertical direction. The first punching die 22 is fixedly installed at the bottom of the punching die base 21 and moves synchronously with the punching die base 21; the second punching die 23 is fixedly installed at the top of the punching die base 21 and moves synchronously with the punching die base 21. The second fixed die 12 is located above the first fixed die 11. When the punching die base 21 moves up and down, the first punching die 22 is adapted to punch the metal sheet on the first fixed die 11, and the second punching die 23 is adapted to punch the metal sheet on the second fixed die 12. The first punching die 22 and the second punching die 23 can be molds with the same structure, so that the products punched out are the same, improving the production efficiency; the first punching die 22 and the second punching die 23 can also be molds with different structures, so that the structures of the products punched out are different, and thus the same punching press can simultaneously realize the punching and forming of two different structural products. In this embodiment, it is preferably that the first punching die 22 and the second punching die 23 are molds with the same structure.

[0032] An aggregate chamber is provided on the punching press base. The aggregate chamber is located below the first fixed die 11, and a die cavity is formed on the first fixed die 11. The die cavity is communicated with the aggregate chamber, so that the sheet metal produced after punching on the first fixed die 11 will fall into the aggregate chamber for collection.

[0033] Combined with Figure 1 Refer to Figure 2 With Figure 3 , the first feeding mechanism 3 includes a first substrate 31, a first sliding frame 32 and a first clamping cylinder 33. The first substrate 31 is connected to the punching press body 1 by bolts, and one end of the first substrate 31 protrudes from the punching press body 1 in a cantilever state, thus providing sufficient space for the installation of the first sliding frame 32. A guide rail group is installed on the top of the first substrate 31. The first sliding frame 32 is installed on the guide rail group, and the first sliding frame 32 can move closer to or away from the first fixed die 11 relative to the first substrate 31. The first clamping cylinder 33 is fixedly arranged on the first sliding frame 32 to clamp or release the metal sheet. When the first sliding frame 32 moves in the direction close to the first fixed die 11, the first clamping cylinder 33 clamps the metal sheet to drive the metal sheet to be loaded; when the first sliding frame 32 moves in the direction away from the first fixed die 11, the first clamping cylinder 33 does not clamp the metal sheet.

[0034] Among them, two first clamping cylinders 33 are symmetrically arranged, and the metal plate is located between the two first clamping cylinders 33. Thus, when the first clamping cylinders 33 drive the metal plate to move, it is relatively stable. When the first punching die 22 punches the metal plate on the first fixed die 11, the first clamping cylinders 33 are in a clamping state for the metal plate, so that the metal plate between the first clamping cylinders 33 and the punching position remains stable, improving the punching effect and accuracy. A first roller clamping group 14 is also arranged on the punching machine body 1. The first roller clamping group 14 is located on the side of the first fixed die 11 close to the second feeding mechanism 4. If the metal plate presents as strip-shaped waste after punching, then the metal plate will pass through the first roller clamping group 14 after punching and be wound around the coil support frame 13 close to the second feeding mechanism 4, thus ensuring the flatness of the metal plate located on the first fixed die 11.

[0035] On the side of the first sliding frame 32 away from the first fixed die 11, there is a first unpowered roller conveyor belt 15. A section of the end of the metal plate is laid flat on the first unpowered roller conveyor belt 15. Thus, when the first clamping cylinders 33 drive the metal plate to move, it is more labor-saving and smooth.

[0036] Combined with Figure 1 Refer to Figure 2 With Figure 3 The first feeding mechanism 3 further includes a first connecting rope 34, a first pulley group 35, and a first tension spring 36. One end of the first connecting rope 34 is fixedly connected to the die base 21, and the other end is connected to the first sliding frame 32. And the first connecting rope 34 passes around the first pulley group 35 to change the direction of the pulling force, without interfering with the movement of the metal plate and other components. The first tension spring 36 is located on the side of the first sliding frame 32 facing away from the first fixed die 11. A first hook column is welded to the top of the first base plate 31. The first hook column is located on the side of the first tension spring 36 away from the first sliding frame 32. One end of the first tension spring 36 is hooked to the first hook column, and the other end is hooked to the first sliding frame 32. When the die base 21 descends and approaches the first fixed die 11, the first tension spring 36 is adapted to drive the first sliding frame 32 to move away from the first fixed die 11.

[0037] When the die base 21 moves upward and away from the first fixed die 11, the die base 21 will drive the first connecting rope 34 to move together. The first connecting rope 34 will then pull the first sliding frame 32 to move toward the first fixed die 11 to achieve feeding. In this embodiment, it is preferably that the first pulley group 35 includes three fixed pulleys. One of the fixed pulleys is installed on the punching machine body 1; the other two fixed pulleys are installed on the side of the first fixed die 11 close to the first sliding frame 32 and are both located below the metal plate. Thus, the first connecting rope 34 and the fixed pulleys located on the first fixed die 11 are not likely to interfere with the conveying of the metal plate.

[0038] Since the second fixed die 12 is located above the first fixed die 11, the second feeding mechanism 4 is located above the die base 21 and on the side of the punch body 1 away from the first feeding mechanism 3.

[0039] Combined with Figure 2 Refer to Figure 4 With Figure 5 As shown in the figure, the second feeding mechanism 4 includes a second base plate 41, a second sliding frame 42, and a second clamping cylinder 43. The second base plate 41 is connected to the punch body 1 by bolts, and one end of the second base plate 41 protrudes from the punch body 1 in a suspended state, thus providing sufficient space for the installation of the second sliding frame 42. A guide rail group is also installed at the bottom of the second base plate 41. The second sliding frame 42 is located at the bottom of the second base plate 41 and is installed on the guide rail group. The second sliding frame 42 can move relative to the second base plate 41 closer to or away from the second fixed die 12. The second clamping cylinder 43 is fixedly arranged on the second sliding frame 42 to clamp or release the metal sheet. When the second sliding frame 42 moves in the direction closer to the second fixed die 12, the second clamping cylinder 43 clamps the metal sheet to drive the metal sheet for loading; when the second sliding frame 42 moves in the direction away from the second fixed die 12, the second clamping cylinder 43 does not clamp the metal sheet.

[0040] Combined with Figure 1 Refer to Figure 4 With Figure 5 As shown in the figure, two second clamping cylinders 43 are symmetrically arranged, and the metal sheet is located between the two second clamping cylinders 43. Thus, when the second clamping cylinder 43 drives the metal sheet to move, it is more stable. When the second punch die 23 punches the metal sheet on the second fixed die 12, the second clamping cylinder 43 is in a clamping state for the metal sheet, so that the metal sheet between the second clamping cylinder 43 and the punching position remains stable, improving the punching effect and accuracy. A second roller clamping group 16 is also arranged on the punch body 1. The second roller clamping group 16 is located on the side of the second fixed die 12 close to the first feeding mechanism 3. If the metal sheet presents as strip-shaped waste after stamping, then the metal sheet will pass through the second roller clamping group 16 after stamping and be wound around the coil support frame 13 close to the first feeding mechanism 3, thus ensuring the flatness of the metal sheet on the second fixed die 12.

[0041] A second unpowered roller conveyor belt 17 is arranged on the side of the second sliding frame 42 away from the second fixed die 12. A section of the end of the metal sheet is laid flat on the second unpowered roller conveyor belt 17. Thus, when the second clamping cylinder 43 drives the metal sheet to move, it is more labor-saving and smooth.

[0042] Combined with Figure 2 Refer to Figure 4 With Figure 5The second feeding mechanism 4 also includes a second connecting rope 44, a second pulley block 45 and a second tension spring 46. One end of the second connecting rope 44 is fixedly connected to the die base 21, and the other end is connected to the second sliding frame 42, and the second connecting rope 44 passes through the second pulley block 45 to change the direction of the pulling force, so as not to interfere with the movement of the metal sheet and other components. The second tension spring 46 is located on the side of the second sliding frame 42 away from the second fixed mold 12, and a second hooking column is welded to the bottom of the second base plate 41, and the second hooking column is located on the side of the second tension spring 46 away from the second sliding frame 42. One end of the second tension spring 46 is hooked to the second hooking column, and the other end is hooked to the second sliding frame 42. When the die base 21 descends and approaches the second fixed mold 12, the second tension spring 46 is suitable for driving the second sliding frame 42 to move in a direction away from the second fixed mold 12.

[0043] When the die base 21 moves downward away from the second fixed die 12 and approaches, the die base 21 will drive the second connecting rope 44 to move together, and the second connecting rope 44 will pull the second sliding frame 42 to move toward the second fixed die 12 to achieve material loading. In this embodiment, the second pulley group 45 preferably includes four fixed pulleys, two of which are installed on the punching machine body 1 at intervals in the vertical direction; the other two fixed pulleys are installed on one side of the second fixed die 12 close to the second sliding frame 42, and are both located below the metal plate, so that the second connecting rope 44 and the fixed pulleys on the second fixed die 12 are not likely to interfere with the transportation of the metal plate.

[0044] Combination Figure 4 Reference Figure 5 and Figure 6 The top of the second fixed die 12 is in contact with and connected to the punching machine body 1. A mounting groove is provided on the top of the second fixed die 12. An electromagnet device 121 is installed in the mounting groove. A cover plate is installed at the slot of the mounting groove by bolts. The cover plate blocks the slot of the mounting groove to prevent dust from entering the mounting groove. After the second punching die 23 punches the metal sheet on the second fixed die 12, the control system will control the electromagnet device 121 to be energized to generate magnetism to adsorb the punched finished sheet, so that the sheet is not easy to fall under the action of gravity and cause damage to the sheet or other components on the punching machine body 1.

[0045] The second sliding frame 42 is equipped with a driving cylinder 47, and a guide channel plate 48 is fixedly connected to the telescopic rod of the driving cylinder 47. When the second sliding frame 42 moves, the driving cylinder 47 and the guide channel plate 48 will move synchronously with the second sliding frame 42. When the guide channel plate 48 moves to the bottom of the second fixed mold 12, the control system will control the electromagnet device 121 to cut off the power, and the finished plate that has been punched will fall onto the guide channel plate 48 under the action of gravity, and then be guided to the collection box through the guide channel plate 48.

[0046] CombinationFigure 4 Reference Figure 5 And Figure 6 When the second punching die 23 punches the metal sheet on the second fixed die 12, the second connecting rope 44 is in a slack state. When the second punching die 23 descends with the die base 21, the second sliding frame 42 does not move synchronously with the die base 21 to drive the metal sheet to move towards the second fixed die 12 first. Instead, it can provide space for the guiding channel plate 48 to move to directly below the second fixed die 12, so that the guiding channel plate 48 can be located directly below the second fixed die 12 to receive materials before the metal sheet moves and does not block the cavity on the second fixed die 12. The driving cylinder 47 can accelerate the moving speed of the guiding channel plate 48, making the whole process relatively rapid, not affecting the processing efficiency, and making the second connecting rope 44 not too slack during punching, ensuring the cooperation between the second connecting rope 44 and the second pulley group 45.

[0047] The implementation principle of the punching press with two-way feeding in the embodiment of the present application is as follows: When the die base 21 rises and resets, it will drive the second punching die 23 to punch the metal sheet on the second fixed die 12. The control system will control the electromagnet device 121 to be energized to generate magnetism to adsorb the punched finished sheet, so that the sheet is not easily dropped under the action of gravity. At the same time, the first clamping cylinder 33 will clamp the metal sheet and move it towards the first fixed die 11 for feeding under the pulling action of the first connecting rope 34. And the second sliding frame 42 can move away from the second fixed die 12 under the action of the second tension spring 46 to prepare for the next feeding.

[0048] When the die base 21 descends to drive the first punching die 22 to punch the metal sheet on the first fixed die 11, the end of the first connecting rope 34 connected to the die base 21 will move down synchronously with the die base 21. At this time, the first sliding frame 32 can move away from the first fixed die 11 under the action of the first tension spring 36. At the same moment, the driving cylinder 47 will drive the guiding channel plate 48 to move to directly below the second fixed die 12. At this time, the control system will control the electromagnet device 121 to be powered off, and the punched finished sheet will fall onto the guiding channel plate 48 under the action of gravity, and then be guided to the collection box through the guiding channel plate 48. And the second clamping cylinder 43 will clamp the metal sheet and move it towards the second fixed die 12 for feeding under the pulling action of the second connecting rope 44.

[0049] If the metal sheet presents as strip-shaped waste after stamping, then the metal sheet will be wound around another coil support frame 13 after stamping.

[0050] Equivalently, the components included in the "components", "mechanisms", and "devices" of the present disclosure can also be flexibly combined, that is, modular production can be carried out according to actual conditions and assembled modularly as an independent module; they can also be assembled separately to form a module in the present device. The division of the above components in the present disclosure is only one embodiment for the convenience of reading, rather than a limitation on the protection scope of the present disclosure. As long as the above components are included and have the same function, it should be understood as an equivalent technical solution of the present disclosure.

[0051] In the description of the present disclosure, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure 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 should not be construed as a limitation on the present disclosure.

[0052] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include at least one of such features. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present disclosure, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0054] In this disclosure, unless otherwise clearly specified and defined, a first feature being "on" or "under" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "over" and "on top of" a second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. A first feature being "under", "below" and "beneath" a second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0055] It should be noted that when an element is referred to as being "fixed to", "arranged on", "secured to" or "installed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. Further, when an element is considered to be "fixedly connected to" another element, the two can be fixed in a detachable connection manner or a non-detachable connection manner, such as socket connection, snap connection, integral molding fixation, welding, etc., which can be achieved in the prior art and will not be elaborated here.

[0056] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0057] The above embodiments only represent several implementation manners of this disclosure. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the inventive concept of this disclosure, several modifications and improvements can still be made, and these all belong to the protection scope of this disclosure.

Claims

1. A punching machine with bidirectional feeding, characterized in that: It includes a punching machine body (1), a punching die assembly (2), a first feeding mechanism (3) and a second feeding mechanism (4). The punching machine body (1) is provided with a first fixed die (11) and a second fixed die (12) at intervals. The first feeding mechanism (3) is adapted to convey a metal plate onto the first fixed die (11), and the second feeding mechanism (4) is adapted to convey a metal plate onto the second fixed die (12). The punching die assembly (2) is located between the first fixed die (11) and the second fixed die (12), and the punching die assembly (2) is slidably connected to the punching machine body (1). When the punching die assembly (2) moves towards the first fixed die (11) for punching, the punching die assembly (2) is adapted to drive the second feeding mechanism (4) to drive the metal plate to move towards the direction close to the second fixed die (12) for feeding, and the punching die assembly (2) drives the first feeding mechanism (3) to move away from the first fixed die (11); when the punching die assembly (2) moves towards the second fixed die (12) for punching, the punching die assembly (2) is adapted to drive the first feeding mechanism (3) to drive the metal plate to move towards the direction close to the first fixed die (11) for feeding, and the punching die assembly (2) drives the second feeding mechanism (4) to move away from the second fixed die (12); the punching die assembly (2) includes a punching die base (21), a first punching die (22) and a second punching die (23). The first punching die (22) and the second punching die (23) are respectively fixedly installed on the upper and lower sides of the punching die base (21). The first punching die (22) is adapted to punch the metal plate on the first fixed die (11), and the second punching die (23) is adapted to punch the metal plate on the second fixed die (12); the second fixed die (12) is located above the first fixed die (11), and an electromagnet device (121) is arranged inside the second fixed die (12). When the punching die assembly (2) punches the metal plate on the second fixed die (12), the electromagnet device (121) is adapted to adsorb the punched plate.

2. The punching machine with bidirectional material feeding according to claim 1, characterized in that: The first feeding mechanism (3) includes a first substrate (31), a first sliding frame (32) and a first clamping cylinder (33). The first substrate (31) is connected to the punching machine body (1), the first sliding frame (32) is slidably connected to the first substrate (31), and the first sliding frame (32) moves closer to or away from the first fixed die (11). The first clamping cylinder (33) is fixedly arranged on the first sliding frame (32) to clamp or release the metal plate.

3. The punching machine with bidirectional feeding according to claim 2, wherein: The first feeding mechanism (3) further includes a first connecting rope (34) and a first pulley group (35) adapted to change the pulling direction of the first connecting rope (34). One end of the first connecting rope (34) is fixedly connected to the punching die assembly (2), and the other end is connected to the first sliding frame (32).

4. The punching machine with bidirectional feeding according to claim 3, characterized in that: The first feeding mechanism (3) further includes a first tension spring (36). One side of the first tension spring (36) is connected to the first sliding frame (32), and the other side is connected to the first substrate (31). When the die assembly (2) approaches the first fixed die (11), the first tension spring (36) is adapted to drive the first sliding frame (32) to move away from the first fixed die (11). When the die assembly (2) stamps the metal sheet on the first fixed die (11), the first clamping cylinder (33) clamps the metal sheet.

5. The punching machine with bidirectional feeding according to any one of claims 1-2, characterized in that: The second feeding mechanism (4) includes a second substrate (41), a second sliding frame (42), and a second clamping cylinder (43). The second substrate (41) is connected to the punching machine body (1). The second sliding frame (42) is slidably connected to the second substrate (41), and the second sliding frame (42) moves closer to or away from the second fixed die (12). The second clamping cylinder (43) is fixedly arranged on the second sliding frame (42) to clamp or release the metal sheet.

6. The punching machine with bidirectional feeding according to claim 5, wherein: The second feeding mechanism (4) further includes a second connecting rope (44) and a second pulley group (45) adapted to change the pulling direction of the second connecting rope (44). One end of the second connecting rope (44) is fixedly connected to the die assembly (2), and the other end is connected to the second sliding frame (42).

7. The punching machine with bidirectional feeding according to claim 5, wherein: A guiding channel plate (48) is provided on one side of the second sliding frame (42) close to the second fixed die (12). The second sliding frame (42) is provided with a driving cylinder (47). The telescopic rod of the driving cylinder (47) is connected to the guiding channel plate (48). When the guiding channel plate (48) moves to directly below the second fixed die (12), the electromagnet device (121) is powered off to drive the punched-off sheet to fall onto the guiding channel plate (48).

8. The punching machine with bidirectional feeding according to claim 1, characterized in that: Coil supports (13) are provided on both opposite sides of the punching machine body (1). The coil supports (13) are adapted to support the coiled metal sheet. When the corresponding coil support (13) is subjected to the pulling force of the first feeding mechanism (3) or the second feeding mechanism (4), it can drive the coiled metal sheet to rotate to achieve feeding; the strip-shaped waste formed after stamping the metal sheet on one coil support (13) is adapted to wind around the other coil support (13).

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