Die holder, punching machine and using method of punching machine

Abstract

The invention relates to the field of stamping equipment, aims to solve the problem that the fixing positions of plates of different specifications and different materials need to be repeatedly adjusted during stamping, and provides a die holder which comprises a holder body, the holder body is used for being connected with a lower die, a containing groove is formed in the top wall of the holder body, and two opposite side holes are formed in the containing groove; the movable plate is arranged in the side hole in a penetrating manner; the ejection block is located in the containing groove, the bottom wall of the ejection block is connected with the top wall of the movable plate, and the top wall of the ejection block is flush with the top wall of the base body; the bottom end of the guide rod is connected with any end of the movable plate; the clamping plate is provided with a through hole, the guide rod penetrates through the through hole, and the clamping plate is further provided with a first threaded hole; the first threaded rod is in threaded connection with the first threaded hole; and an output shaft of the first motor is connected with the bottom end of the first threaded rod. According to the die holder provided by the invention, the clamping plate, the guide rod and the first threaded rod are arranged, so that a plate is clamped and fixed.

Description

Technical Field

[0001] The present invention relates to the field of stamping equipment, and more particularly, to a die holder, a stamping machine and a method for using the stamping machine. Background Art

[0002] Stamping is a forming process that applies external forces to plates, strips, tubes, profiles, etc. by a press and a die, causing plastic deformation or separation to obtain workpieces (stamped parts) with the required shape and size. Stamping and forging belong to plastic processing (or pressure processing) and are collectively called forging and pressing. The blanks for stamping are mainly hot-rolled and cold-rolled steel plates and strips. Among the steels worldwide, 60-70% are plates, and most of them are made into finished products through stamping. The body, chassis, fuel tank, radiator fins of automobiles, the steam drum of boilers, the shells of containers, and the silicon steel sheets of the cores of motors and electrical appliances are all processed by stamping. There are also a large number of stamped parts in products such as instruments, household appliances, bicycles, office machinery, and household utensils. Stamping processing is a production technology that uses the power of conventional or special stamping equipment to directly apply deformation force to the sheet metal in the die and cause deformation, thereby obtaining product parts with a certain shape, size, and performance. Sheet metal, die, and equipment are the three elements of stamping processing.

[0003] Existing stamping machines usually include a workbench and a press located above the workbench. The lower die is installed on the workbench, and the press drives the upper die to stamp the sheet metal on the lower die, thereby making stamped parts. However, when stamping some raw materials with a certain length and soft texture, due to the small surface area of the workbench, a certain supporting force is required, otherwise it is easy to bend under its own gravity, and the surface to be stamped of the raw material is difficult to maintain horizontal. Moreover, since the lengths of the raw materials are inconsistent, if the workbench surface is too large to accommodate longer raw materials, there will be a large idle part of the workbench surface when processing other hard plates or shorter plates, and the utilization rate is not high. In addition, due to the different lengths of the sheet metal, their fixed positions on the workbench are also different, and the adjustment when stamping different objects is rather cumbersome. Summary of the Invention

[0004] The purpose of the present invention is to provide a die holder to solve the problem that the fixed positions of sheet metals with different specifications and materials need to be repeatedly adjusted during stamping.

[0005] The purpose of the present invention is to provide a stamping machine and a method for using the stamping machine to solve the problem of low utilization rate of the workbench.

[0006] The embodiments of the present invention are achieved by the following technical solutions:

[0007] A die holder includes: a base body which is used to connect with a lower die, and a receiving groove is provided on the top wall of the base body, and two opposite side holes are provided in the receiving groove; a moving plate which passes through the side holes, and the moving plate has a freedom of movement in the vertical direction; an ejector block which is located in the receiving groove, the bottom wall of the ejector block is connected to the top wall of the moving plate, and the top wall of the ejector block is flush with the top wall of the base body; a guiding rod, the bottom end of the guiding rod is connected to any end of the moving plate; a clamping plate which is provided with a through hole, the guiding rod passes through the through hole, and the clamping plate is further provided with a first threaded hole; a first threaded rod which is threadedly connected with the first threaded hole; a first motor, and the output shaft of the first motor is connected to the bottom end of the first threaded rod.

[0008] Preferably, a second threaded hole is provided at one end of the moving plate away from the guiding rod, and the die holder further includes: a second threaded rod which is threadedly connected with the second threaded hole; a second motor, and the output shaft of the second motor is connected to the top wall of the second threaded rod.

[0009] A punching machine includes: the die holder as described above; a chain plate conveying device, and the chain plate of the chain plate conveying device is connected to the bottom wall of the die holder; a press which is erected above the chain plate conveying device; and the press is used to connect with an upper die and provide power for die stamping.

[0010] Preferably, it includes: a support base, and the support surface of the support base is on the opposite side of the press with respect to the upper side chain plate of the chain plate conveying device, and the support base has a freedom of movement in the vertical direction.

[0011] Preferably, the support base is provided with an opening for the lower side chain plate of the chain plate conveying device to pass through, and the punching machine further includes: a telescopic cylinder, and the output shaft of the telescopic cylinder is connected to the bottom wall of the support base.

[0012] Preferably, the support base includes an upper concave seat and a lower concave seat, and the opening is formed after the upper concave seat and the lower concave seat are joined together, and the bottom wall of the lower concave seat is connected to the output shaft of the telescopic cylinder.

[0013] Preferably, one end of the upper concave seat is rotatably connected to one end of the lower concave seat, the upper concave seat has a freedom of horizontal rotation, and the top wall of the lower concave seat is higher than the top wall of the lower side chain plate of the chain plate conveying device.

[0014] Preferably, the chain plate conveying device includes a feeding section and a discharging section, and the press is arranged between the feeding section and the discharging section.

[0015] Preferably, the clamping plates on adjacent die holders are located on both sides in the width direction of the chain plate conveying device.

[0016] A method for using a stamping machine, comprising:

[0017] S100. After the lower die is installed on the die base, place the sheet on the top wall of the lower die, and then rotate the first threaded rod to move the clamping plate downward, thereby clamping and fixing the sheet;

[0018] S200. After the sheet is conveyed by the chain plate conveying device to below the press, move the support base upward so that the support base abuts against the bottom wall of the chain plate, and then move the upper die downward through the press so that the upper die and the lower die are aligned to achieve stamping;

[0019] S300. After stamping is completed, rotate the first threaded rod to move the clamping plate upward and remove the sheet;

[0020] S400. When the die base reaches the end of the chain plate conveying device, rotate the second threaded rod to move the moving plate upward, and the moving plate drives the ejector block to eject the stamped product out of the upper die.

[0021] The present invention has at least the following beneficial effects:

[0022] The die base provided by the present invention realizes the clamping and fixing of the sheet by setting the clamping plate, the guide rod, the first threaded rod, and the ejector block and the moving plate are arranged to facilitate the unloading of the product after stamping.

[0023] The stamping machine and the method for using the stamping machine provided by the present invention, after combining the die base and the chain plate conveying device, a workbench surface can no longer be provided, and the die base on the chain plate is directly used to support and fix the sheet. Since the chain plate conveying device is originally used for conveying the sheet, even if a certain length is laid to adapt to different specifications of the sheet, the conveying surface of the chain plate conveying device will not be in an idle state; since there are multiple die bases on the chain plate conveying device, and each die base can selectively clamp or not clamp the sheet, it can be applied to the clamping of different specifications of sheets; in addition, after the die base is combined with the chain plate conveying device, during the process of the die base moving to the lower side of the chain plate conveying device, it will be in an inclined or inverted state, and the stamped product can be automatically unloaded by combining the moving plate and the ejector block in the foregoing state, thereby improving the degree of automation of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic structural diagram a of the die base;

[0026] Figure 2It is a schematic structural diagram b of a die holder;

[0027] Figure 3 It is a schematic structural diagram of a stamping machine;

[0028] Figure 4 It is a schematic diagram when the stamping machine discharges materials;

[0029] Figure 5 It is a schematic structural diagram of a support seat;

[0030] Figure 6 It is a schematic installation diagram of adjacent die holders;

[0031] Reference numerals: 1 - seat body, 101 - accommodating groove, 102 - side hole, 2 - moving plate, 3 - ejecting block, 4 - guiding rod, 5 - clamping plate, 6 - first threaded rod, 7 - first motor, 8 - second threaded rod, 9 - second motor, 10 - die holder, 11 - chain plate conveying device, 12 - press, 13 - lower die, 14 - upper die, 15 - support seat, 151 - opening, 152 - upper concave seat, 153 - lower concave seat, 16 - telescopic cylinder, 17 - feeding section, 18 - discharging section, 19 - sheet material, 20 - storage box. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0033] Existing stamping machines generally include a workbench and a press located above the workbench. The lower die is installed on the workbench, and the press drives the upper die to stamp the sheet material on the lower die, thereby making stamped parts. However, when stamping some raw materials with a certain length and soft texture, due to the relatively small surface area of the workbench, a certain supporting force is required, otherwise it is easy to bend under its own gravity, and the surface to be stamped of the raw material is difficult to remain horizontal. Moreover, the lengths of the raw materials are inconsistent. If the workbench surface is too large to accommodate longer raw materials, there will be a large idle part of the workbench surface when processing other hard sheet materials or shorter sheet materials, and the utilization rate is not high. In addition, due to the different lengths of the sheet materials, their fixed positions on the workbench are also different, and the adjustment when stamping different objects is rather cumbersome. Therefore, the applicant conceived a stamping method and a stamping machine structure without a workbench. In order to cooperate with the new stamping method and stamping machine structure, the applicant improved the die holder. See Embodiments 1 - 2 for details.

[0034] Embodiment 1

[0035] As Figure 1As shown in the figure, a die holder 10 includes: a base body 1 for connecting with a lower die 13. There is a receiving groove 101 on the top wall of the base body 1, and two opposite side holes 102 are provided in the receiving groove 101; a moving plate 2 passing through the side holes 102, and the moving plate 2 has a vertical degree of freedom of movement; an ejector block 3 located in the receiving groove 101, the bottom wall of the ejector block 3 is connected to the top wall of the moving plate 2, and the top wall of the ejector block 3 is flush with the top wall of the base body 1; a guide rod 4, the bottom end of the guide rod 4 is connected to any end of the moving plate 2; a clamping plate 5 is provided with a through hole, the guide rod 4 passes through the through hole, and the clamping plate 5 is also provided with a first threaded hole; a first threaded rod 6 threadedly connected to the first threaded hole; a first motor 7, the output shaft of the first motor 7 is connected to the bottom end of the first threaded rod 6.

[0036] In the specific implementation process, the lower die 13 can be connected to the base body 1 by bolts. When different-shaped parts or holes need to be stamped, the lower die 13 can be disassembled and replaced by bolts. The driving of the moving plate 2 can adopt an electric telescopic rod, etc. The guide rod 4 is slidably connected to the clamping plate 5. A slide rail can be provided on the side wall of the guide rod 4, and a slider can be provided on the side wall of the through hole of the clamping plate 5 to improve the sliding stability of the clamping plate 5. A stop block can also be provided at the upper end of the guide rod 4 to prevent the clamping plate 5 from disengaging from the guide rod 4. At the same time, the top end of the guide rod 4 can be lower than the top end of the first threaded rod 6, so that the stop block on the guide rod 4 can be used to prevent the clamping plate 5 from disengaging from the first threaded rod 6. In the initial state, the moving plate 2 abuts against the lower wall of the side hole 102. At this time, the top wall of the ejector block 3 is flush with the top wall of the base body 1, preventing the ejector block 3 from entering the lower die 13 and affecting the stamping forming of the sheet 19.

[0037] Usage method: Drive the first threaded rod 6 to rotate through the first motor 7, the clamping plate 5 moves upward to leave a placement space for the sheet 19. After the sheet 19 is placed on the lower die 13, the first threaded rod 6 rotates in the reverse direction, and the clamping plate 5 moves downward to clamp and fix the sheet 19 on the lower die 13. After stamping is completed, drive the clamping plate 5 to move upward by rotating the first threaded rod 6 again to remove the sheet 19. Finally, move the moving plate 2 upward to drive the ejector block 3 upward, so that the ejector block 3 ejects the stamped part from the lower die 13. The thickness of the ejector block 3 can be greater than or equal to the thickness of the lower die 13, facilitating the complete separation of the formed part from the lower die 13.

[0038] It should be noted that if a sheet 19 needs to be stamped at multiple positions, die bases 10 can be provided at the corresponding positions. The multiple die bases 10 can not only achieve stamping of multiple specific positions of the sheet 19, but also effectively support some soft sheets 19. The clamping positions of the die bases 10 on the sheet 19 are not limited to the stamping positions of the sheet 19 and can be additionally set according to the support effect.

[0039] Embodiment 2

[0040] In order to simply realize the fixation and movement of the moving plate 2, improvements are made on the basis of Embodiment 1, as Figure 2 shown. In this embodiment, a second threaded hole is provided at one end of the moving plate 2 away from the guide rod 4. The die base 10 further includes: a second threaded rod 8, which is threadedly connected to the second threaded hole; and a second motor 9, the output shaft of which is connected to the top wall of the second threaded rod 8.

[0041] In the specific implementation process, the rotation of the second threaded rod 8 driven by the second motor 9 can realize the up and down movement of the moving plate 2. The guide rod 4 is not only used for guiding the clamping plate 5, but also for guiding the moving plate 2, and the structure is simpler.

[0042] When it is necessary to eject the formed part, rotate the second threaded rod 8 to drive the moving plate 2 to move upward. After the unloading is completed, the second threaded rod 8 rotates in the reverse direction to drive the moving plate 2 to move downward until it abuts against the bottom wall of the side hole 102. At this time, the ejector block 3 resets, and the top wall of the ejector block 3 is flush with the top wall of the seat body 1 again. In order to make the movement of the ejector block 3 more stable and avoid the ejector block 3 from disengaging from the seat body 1 when the die base 10 is inclined or inverted, a slider can be provided on the side wall of the ejector block 3, and a chute can be provided on the inner side wall of the seat body 1. The sliding connection between the ejector block 3 and the seat body 1 is realized through the cooperation of the slider and the chute, improving the movement stability of the ejector block 3. The limit of the chute on the movement of the ejector block 3 can also prevent the ejector block 3 from disengaging from the seat body 1.

[0043] Embodiment 3

[0044] In order to eliminate the workbench structure during stamping and avoid the problem of low utilization rate caused by the workbench adapting to different specifications of sheets 19, improvements are made on the basis of Embodiment 2, as Figures 3 - 4 shown. A stamping machine includes: the die base 10 described above; a chain plate conveying device 11, the chain plate of which is connected to the bottom wall of the die base 10; a press 12, which is erected above the chain plate conveying device 11; and the press 12 is used to connect to the upper die 14 and provide power for the die.

[0045] In the specific implementation process, there are many common conveying devices, such as belt conveying devices, roller conveying devices, and the chain plate conveying device 11 used in this embodiment. Since the conveying device in this embodiment is used in a stamping scenario, if a belt conveying device is used, the elasticity of the belt makes it difficult to stably support the lower die 13, affecting the stamping effect. The roller conveying device advances the sheet 19 by the rolling of the rollers, and the rollers do not advance synchronously with the sheet 19, and the sheet 19 may also slide on the surface of the rollers, which is not conducive to aligning the punching position of the sheet 19 with the upper die 14. Therefore, in this embodiment, the chain plate conveying device 11 is used in cooperation with the die holder 10. The die holder 10 can be installed on the chain plate through a plug-and-play structure, and the number and position of the die holders 10 can be adjusted at any time according to different specifications of the sheet 19 and the stamping position. The chain plate conveying device 11 generally includes a power device (motor), a transmission shaft, a tensioning device, a sprocket, a chain, bearings, and chain plates, etc. The conveying power is provided through the cooperation of the motor, sprockets, and chain. The rotation of the sprocket drives the chain, and the chain drives the chain plates to realize the movement of the chain plates. The chain plates are the carriers during the conveying process and drive the sheet 19 to move. The tensioning device can prevent the chain from falling off. Since the chain plate conveying device 11 is a prior art, the specific structure is not shown in the drawings of this case, and it can be implemented with reference to the prior art, and will not be elaborated in this embodiment.

[0046] The press 12 for stamping is a general-purpose press 12 with a delicate structure, and has the characteristics of wide application and high production efficiency. The press 12 can be widely used in processes such as cutting, punching, blanking, bending, riveting, and forming. The metal billet is processed into parts by applying a strong pressure to cause plastic deformation and fracture of the metal. When the mechanical press 12 works, the electric motor drives the large pulley through a V-belt, and drives the crank-slider mechanism through a gear pair and a clutch, so that the slider and the punch move linearly downward. After the forging work of the mechanical press 12 is completed, the slider moves upward, the clutch is automatically disengaged, and at the same time, the automatic device on the crankshaft is turned on, so that the slider stops near the top dead center. The press 12 is also a prior art and will not be elaborated in this embodiment.

[0047] As Figure 3 shown, multiple sheets 19 can be conveyed simultaneously on the chain plate conveying device 11. Multiple die holders 10 can be set under one sheet 19 according to its length and processing positions. The die holders 10 can be used as the support for the lower die 13 during stamping and also as the overall support for the sheet 19.

[0048] Exemplarily, as Figure 4 shown, if the purpose of stamping is to punch holes, after stamping, when the die holder 10 moves to the edge of the chain plate conveying device 11, the die holder 10 is inclined or inverted. At this time, the moving plate 2 drives the ejector block 3 to eject the waste. A storage box 20 can be placed at the falling position of the waste, and the waste is collected by the storage box 20 for reuse or discarded, etc.

[0049] Exemplary, such as Figure 4 As shown, when the purpose of stamping is to stamp and form parts, the forming parts in the lower die 13 can also be collected in the storage bin 20 as described above.

[0050] Embodiment 4

[0051] In order to provide more stable support for the lower die 13, improvements are made on the basis of Embodiment 3, such as Figures 4 - 5 As shown, in this embodiment, it includes: a support base 15, the support surface of the support base 15 is on the opposite side of the upper side chain plate of the chain plate conveying device 11 where the press 12 is located, and the support base 15 has a vertical degree of freedom of movement.

[0052] In the specific implementation process, although the chain plates on the chain plate conveying device 11 are generally metal plates, no force transmission occurs between them and the transmission shaft, chain, etc. After being subjected to punching force, the structure of the chain plate conveying device 11 may be damaged. Therefore, in this embodiment, the support base 15 is provided so that most of the punching force is transmitted to the support base 15, reducing the damage to the chain plate conveying device 11, increasing the maximum value of the punching force, expanding the applicable process range, and at the same time avoiding the influence of the chain plate shaking after being stressed on the punching quality.

[0053] The position of the press 12 can always remain unchanged, and thus the position of the support base 15 can remain unchanged. When the die holder 10 corresponding to the processing position of the sheet 19 reaches below the press 12, the support base 15 rises to abut against the chain plate, thereby supporting the die holder 10 on the chain plate.

[0054] Embodiment 5

[0055] In order to further improve the support stability of the support base 15, improvements are made on the basis of Embodiment 4, such as Figure 5 As shown, in this embodiment, the support base 15 is provided with an opening 151 for the lower side chain plate of the chain plate conveying device 11 to pass through, and the stamping machine further includes: a telescopic cylinder 16, and the output shaft of the telescopic cylinder 16 is connected to the bottom wall of the support base 15.

[0056] In the specific implementation process, the chain plate conveying device 11 is generally provided with a frame for installing devices such as motors. If Figure 3 As shown, the support base 15 is directly set on the side wall of the frame without touching the ground. Due to the suspended state, the punching force it can withstand is limited. Therefore, in this embodiment, as Figure 5The shown support base 15, in the figure, only the chain plate structure on the lower side of the chain plate conveying device 11 is shown, and the chain plate directly passes through its opening 151, so that the support base 15 can directly land on the ground. The telescopic cylinder 16 can adopt a hydraulic cylinder or an oil pressure cylinder. Compared with most telescopic mechanisms, the cylinder can bear greater pressure. For example, the screw lifting structure adopted by the moving plate 2 relies on threads to fix the position of the moving plate 2. If the moving plate 2 is subjected to a large impact force, the threads may be damaged, resulting in the displacement of the moving plate 2.

[0057] Embodiment 6

[0058] For the convenience of disassembly and assembly of the support base 15, improvements are made on the basis of Embodiment 5, as Figure 5 shown. In this embodiment, the support base 15 includes an upper concave seat 152 and a lower concave seat 153. After the upper concave seat 152 and the lower concave seat 153 are joined together, the opening 151 is formed, and the bottom wall of the lower concave seat 153 is connected to the output shaft of the telescopic cylinder 16.

[0059] During the specific implementation process, as Figure 5 shown, the longitudinal sections of the upper concave seat 152 and the lower concave seat 153 can be in a "U" shape. After the upper concave seat 152 is inverted, its end is joined with the end of the lower concave seat 153, thus forming a ring-shaped support base 15. The upper concave seat 152 and the lower concave seat 153 can be connected by bolts or screws, or can be hinged at one end to realize the rotation of the upper concave seat 152. Since the lower side chain plate of the chain plate conveying device 11 needs to pass through the opening 151, and the chain plate conveying device 11 is generally a finished product, the entire chain plate conveyor belt has been installed and formed into a ring. To pass through the opening 151, it is necessary to disassemble to open the ring of the conveyor belt, and the operation is relatively cumbersome. Therefore, in this embodiment, the support base 15 is set as two parts, the upper concave seat 152 and the lower concave seat 153, which can be separated. When the upper concave seat 152 moves to expose the groove of the lower concave seat 153, place the lower side of the chain plate conveyor belt in the groove space, and then reset the upper concave seat 152.

[0060] Embodiment 7

[0061] To avoid the upper side chain plate of the chain plate conveying device 11 from hindering the rotation of the upper concave seat 152, as Figure 5 shown. In this embodiment, one end of the upper concave seat 152 is rotatably connected to one end of the lower concave seat 153. The upper concave seat 152 has the freedom of horizontal rotation, and the top wall of the lower concave seat 153 is higher than the top wall of the lower side chain plate of the chain plate conveying device 11.

[0062] In the specific implementation process, since the upper concave seat 152 is located in the middle of the annular chain plate conveyor belt, if it rotates in the vertical plane during rotation, it may contact the upper side chain plate of the chain plate conveying device 11. Therefore, in this embodiment, the movement path of the upper concave seat 152 away from the lower concave seat 153 is set to horizontal rotation. In order to avoid the obstruction of the lower side chain plate of the chain plate conveying device 11 when the upper concave seat 152 rotates in the horizontal plane, the lowest point of the upper concave seat 152 in this embodiment is higher than the top wall of the lower side chain plate.

[0063] Embodiment 8

[0064] In order to provide sufficient unloading space, improvements are made on the basis of Embodiments 4 - 7, as Figure 3 shown, in this embodiment, the chain plate conveying device 11 includes a feeding section 17 and a discharging section 18, and the press 12 is arranged between the feeding section 17 and the discharging section 18.

[0065] In the specific implementation process, as Figure 3 shown, after a certain sheet 19 is stamped, the next sheet 19 can follow for stamping.

[0066] If only the front end of the sheet 19 needs to be stamped, when the press 12 is directly arranged at the end of the chain plate conveying device 11, the operation of removing the sheet 19 from the die base 10 is relatively simple. However, when other parts of the sheet 19 also need to be stamped, such as the end of the sheet 19, if the press 12 is directly arranged at the end of the chain plate conveying device 11 without leaving enough length of the conveying section for carrying before removing the sheet 19.

[0067] Embodiment 9

[0068] In order to simplify the structure of the die base 10 on the premise of ensuring the clamping stability of the sheet 19, improvements are made on the basis of Embodiment 8, as Figure 6 shown, in this embodiment, the clamping plates 5 on adjacent die bases 10 are located on both sides in the width direction of the chain plate conveying device 11.

[0069] In the specific implementation process, when the die base 10 is installed on the chain plate conveying device 11, the clamping plates 5 of adjacent front and rear die bases 10 are arranged oppositely, one for clamping the left side of the sheet 5 and the other for clamping the right side of the sheet 5, which can improve the stability of the position of the sheet 19. Only setting one clamping plate 5 on the die base 10 also simplifies the structure of the die base 10.

[0070] Embodiment 10

[0071] A method for using a punching machine, including:

[0072] After the lower die 13 is installed on the die base 10, place the sheet 19 on the top wall of the lower die 13, and then rotate the first threaded rod 6 to move the clamping plate 5 downward, thereby clamping and fixing the sheet 19;

[0073] S200. After the sheet 19 is sent under the press 12 by the chain plate conveying device 11, lift the support base 15 so that the support base 15 abuts against the bottom wall of the chain plate. Then, lower the upper die 14 by the press 12 so that the upper die 14 is aligned with the lower die 13 to achieve stamping;

[0074] S300. After stamping is completed, rotate the first threaded rod 6 to move the clamping plate 5 upward and remove the sheet 19;

[0075] S400. When the die base 10 reaches the end of the chain plate conveying device 11, rotate the second threaded rod 8 to move the moving plate 2 upward. The moving plate 2 drives the ejector block 3 to eject the stamped product out of the upper die 14.

[0076] In the specific implementation process, the sheet 19 can be placed on the lower die 13 through the adsorption claws, and the sheet 19 can also be removed through the adsorption claws. The control of the entire device can adopt an existing control system, and the control of the first motor 7, the second motor 9, the telescopic cylinder 16, the chain plate conveying device 11, and the press 12 can be realized by means of a PLC control cabinet or a single-chip microcomputer.

[0077] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A die holder, characterized in that, Comprising: A base body, which is used to connect with the lower die. The top wall of the base body is provided with a receiving groove, and two opposite side holes are provided in the receiving groove; A moving plate, which is inserted through the side holes. The moving plate has a vertical degree of freedom of movement; An ejector block, which is located in the receiving groove. The bottom wall of the ejector block is connected to the top wall of the moving plate, and the top wall of the ejector block is flush with the top wall of the base body; A guide rod, the bottom end of which is connected to any end of the moving plate; A clamping plate, which is provided with a through hole. The guide rod is inserted through the through hole, and the clamping plate is also provided with a first threaded hole; A first threaded rod, which is threadedly connected to the first threaded hole; A first motor, the output shaft of which is connected to the bottom end of the first threaded rod.

2. The die holder according to claim 1, wherein, At one end of the moving plate away from the guide rod, a second threaded hole is provided. This die holder further comprises: A second threaded rod, which is threadedly connected to the second threaded hole; A second motor, the output shaft of which is connected to the top wall of the second threaded rod.

3. A punching machine, characterized in that, Comprising: The die holder according to claim 2; A chain plate conveying device, the chain plate of which is connected to the bottom wall of the die holder; A press, which is erected above the chain plate conveying device; the press is used to connect with the upper die and provide power for die stamping.

4. The punching machine according to claim 3, characterized in that, Comprising: A support base, the support surface of which is on the opposite side of the press with respect to the upper-side chain plate of the chain plate conveying device. The support base has a vertical degree of freedom of movement.

5. The punching machine according to claim 4, characterized in that, The support base is provided with an opening for the lower-side chain plate of the chain plate conveying device to pass through. This stamping machine further comprises: A telescopic cylinder, the output shaft of which is connected to the bottom wall of the support base.

6. The punching machine according to claim 5, characterized in that, The support base comprises an upper concave seat and a lower concave seat. After the upper concave seat and the lower concave seat are joined together, the opening is formed. The bottom wall of the lower concave seat is connected to the output shaft of the telescopic cylinder.

7. The punching machine according to claim 6, characterized in that, One end of the upper concave seat is rotatably connected to one end of the lower concave seat. The upper concave seat has a horizontal rotational degree of freedom. The top wall of the lower concave seat is higher than the top wall of the lower-side chain plate of the chain plate conveying device.

8. The punching machine according to claims 4-7, characterized in that, The chain plate conveying device comprises a feeding section and a discharging section. The press is arranged between the feeding section and the discharging section.

9. The punching machine according to claim 8, characterized in that, The clamping plates on adjacent die holders are located on both sides in the width direction of the chain plate conveying device.

10. A method for using a stamping machine according to any one of claims 3-9, characterized in that, Comprising: S100. After the lower die is installed on the die holder, place the sheet on the top wall of the lower die, and then rotate the first threaded rod to lower the clamping plate, so as to clamp and fix the sheet; S200. After the sheet is conveyed to the lower part of the press by the chain plate conveying device, lift the support base so that the support base abuts against the bottom wall of the chain plate. Then, lower the upper die through the press so that the upper die and the lower die are aligned to realize die stamping; S300. After die stamping is completed, rotate the first threaded rod to lift the clamping plate and remove the sheet; S400. When the die holder reaches the end of the chain plate conveying device, rotate the second threaded rod to lift the moving plate. The moving plate drives the ejector block to eject the stamped product out of the upper die.

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