Processing method of paper pressing steel sheet

Abstract

The invention provides a processing method of a paper pressing steel sheet, and relates to a processing mould of the paper pressing steel sheet, the mould comprises an upper mould base, a lower mould base and a conveying mechanism, the processing method comprises the following steps: the conveying mechanism conveys the steel sheet to an upper pressing head and a lower pressing head, the upper mould base is closed, an upper pressing block and a lower pressing block are respectively propped against and embedded into the upper surface and the lower surface of the steel sheet, and the upper pressing block and the lower pressing block are pressed into the upper pressing head and the lower pressing head; a plurality of concave holes are simultaneously pressed in the upper surface and the lower surface of the steel sheet; the upper die base is opened, the conveying mechanism conveys the steel sheet with the concave hole to the upper punch and the forming block, and the upper die base is closed and abuts against the lower die base, so that the upper punch and the forming block punch the steel sheet with the concave hole to form a paper pressing steel sheet; and the mold closing and opening actions are repeated in this way to be matched with the conveying action of the conveying mechanism, so that a plurality of concave holes are continuously pressed in the upper surface and the lower surface of the steel sheet, and the steel sheet with the concave holes is continuously punched to form the paper pressing steel sheet. According to the invention, the paper pressing steel sheet after punch forming can be prevented from buckling deformation, and the printing quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printer component processing, and particularly relates to a processing method of a paper pressing steel sheet. BACKGROUND

[0002] With the continuous iteration and upgrading of technology and the steady improvement of the quality of life of the public, printers have been widely popularized and applied in many scenes such as offices, education and business due to their convenient and efficient characteristics.

[0003] The flatness of paper in the printing process is a key factor to ensure clear printing effect and uniform color. The paper pressing steel sheet, as a key component directly contacting and applying pressure to the paper to maintain its flatness, has almost strict requirements for flatness. Once the paper pressing steel sheet has defects such as warping and deformation in the processing link or during long-term use, it is easy to cause the paper to displace or wrinkle in the printing process, and finally cause a series of printing quality problems such as blurred text and color distortion.

[0004] The traditional processing technology of the paper pressing steel sheet mostly adopts direct stamping forming technology. However, in the stamping process, the stress distribution in the steel sheet is extremely uneven, the stamping force is concentrated on a specific area, which causes stress concentration in these areas, so that the residual stress in the steel sheet after stamping forming cannot be uniformly dissipated, and then warping and deformation are induced. Not only will it reduce the flatness of the paper pressing steel sheet and affect its paper pressing effect, but also will shorten the service life of the paper pressing steel sheet and increase the maintenance cost of the printer. SUMMARY

[0005] The purpose of the present application is to provide a processing method of a paper pressing steel sheet, which can prevent the paper pressing steel sheet after stamping forming from warping and deforming and improve the subsequent printing quality.

[0006] To achieve the above purpose, the solution of the present application is as follows: A processing method of a paper pressing steel sheet relates to a processing die of a paper pressing steel sheet, the die comprising an upper die seat, a lower die seat and a conveying mechanism, the conveying mechanism being arranged on one side of the die, the steel sheet being placed on the conveying mechanism and located between the upper die seat and the lower die seat, so as to move from one side of the die to the other side of the die through the conveying mechanism; the upper die seat is provided with an upper punch, and the lower die seat is provided with a lower punch at a position corresponding to the upper punch; the lower end of the upper punch is provided with a plurality of upper pressing blocks, and the upper end of the lower punch is provided with a plurality of lower pressing blocks; the upper die seat and the lower die seat are respectively provided with an upper punch and a forming block corresponding to each other behind the upper punch and the lower punch in the movement direction of the steel sheet. The processing method is as follows: The steel sheet is placed on the conveying mechanism, the running switch of the processing die is started, the conveying mechanism conveys the steel sheet to the upper and lower pressing heads, the upper die holder is closed against the lower die holder, the upper pressing block of the upper pressing head is closed against and embedded into the upper surface of the steel sheet, the lower pressing block of the lower pressing head is closed against and embedded into the lower surface of the steel sheet, so that a plurality of concave holes are pressed out on the upper and lower surfaces of the steel sheet at the same time; The upper die holder is opened and goes up, the conveying mechanism continues to convey the steel sheet with the concave holes to the upper punch and the forming block, and then the upper die holder continues to be closed against the lower die holder, so that the upper punch and the forming block stamp the steel sheet with the concave holes to form the paper pressing steel sheet. The closing and opening actions are repeated, and the conveying action of the conveying mechanism is continued, so that the upper and lower surfaces of the steel sheet continuously press out a plurality of concave holes and the steel sheet with the concave holes is continuously stamped to form the paper pressing steel sheet.

[0007] Preferably, the upper pressing block and the lower pressing block are both in the shape of a regular quadrangular frustum.

[0008] Preferably, the bottom surface of the regular quadrangular frustum is between 0.7 and 1.0 mm in length, the top surface is between 0.5 and 0.7 mm in length, and the height is between 0.5 and 0.7 mm.

[0009] Preferably, the upper die holder is provided with a flattening pressing head, which is arranged behind the upper punch in the movement direction of the steel sheet.

[0010] Preferably, the upper die holder is provided with a material removing punch, which is arranged behind the flattening pressing head in the movement direction of the steel sheet, and the lower die holder is provided with a material removing passage corresponding to the material removing punch.

[0011] Preferably, the conveying mechanism is a conveying belt.

[0012] After the above-mentioned scheme is adopted, the application has the following advantages: The processing method adopted by the application relates to a processing die, which comprises an upper die base, a lower die base and a conveying mechanism, the conveying mechanism is arranged on one side of the die, a steel sheet is placed on the conveying mechanism and between the upper die base and the lower die base, the upper die base is provided with an upper pressing head, the lower die base is provided with a lower pressing head at a position corresponding to the upper pressing head, the lower end of the upper pressing head is provided with a plurality of upper pressing blocks, and the upper end of the lower pressing head is provided with a plurality of lower pressing blocks; the upper die base and the lower die base are respectively provided with an upper punch and a forming block corresponding to each other behind the upper pressing head and the lower pressing head in the movement direction of the steel sheet, the steel sheet is placed on the conveying mechanism during processing, the conveying mechanism conveys the steel sheet to the upper pressing head and the lower pressing head, a plurality of concave holes are pressed out on the upper surface and the lower surface of the steel sheet through the upper pressing blocks and the lower pressing blocks, and then the steel sheet with the concave holes is stamped through the upper punch and the forming block, so that the paper pressing steel sheet is formed, the stress concentration during stamping forming can be effectively avoided, the ductility of the paper pressing steel sheet itself is released, the paper pressing steel sheet is not easy to produce warping deformation, and a relatively high flatness can be maintained at all times, so that the paper can be better pressed in the subsequent printing process, and the subsequent printing quality is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic diagram of the processing and treatment of the steel sheet when the upper die base and the lower die base of the embodiment of the application are closed; Figure 2 is a schematic diagram of the upper die base and the lower die base when the embodiment of the application is opened; Figure 3 is a schematic diagram of the upper pressing head (lower pressing head) provided with the upper pressing block (lower pressing block) in the embodiment of the application; Figure 4 is a front view of the upper pressing head in the embodiment of the application; Figure 5 is a front view of the lower pressing head in the embodiment of the application; Figure 6 is a schematic diagram of the upper surface and the lower surface of the steel sheet when the concave holes are pressed out in the embodiment of the application; Figure 7 is a schematic diagram of the steel sheet with the concave holes in the embodiment of the application.

[0014] Label explanation: 1, upper die base; 2, lower die base; 21, blanking channel; 3, steel sheet; 31, concave hole; 4, upper pressing head; 41, upper pressing block; 5, lower pressing head; 51, lower pressing block; 61, upper punch; 62, forming block; 63, buffer return spring; 7, flattening pressing head; 8, stripping punch; 9, conveying belt; 10. Paper pressing steel sheet. Detailed Implementation

[0015] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0016] This embodiment provides a method for processing a paper-pressing steel sheet, which relates to a processing mold for the paper-pressing steel sheet, such as... Figures 1 to 7 As shown, the mold includes an upper mold base 1, a lower mold base 2, and a conveying mechanism. The conveying mechanism is located on one side of the mold. The steel sheet 3 is placed on the conveying mechanism and located between the upper mold base 1 and the lower mold base 2, so that it can move from one side of the mold to the other side of the mold through the conveying mechanism. The upper mold base 1 is provided with an upper pressure head 4, and the lower mold base 2 is provided with a lower pressure head 5 at a position corresponding to the upper pressure head 4. The lower end of the upper pressure head 4 is provided with multiple upper pressure blocks 41, and the upper end of the lower pressure head 5 is provided with multiple lower pressure blocks 51. The upper mold base 1 and the lower mold base 2 are respectively provided with upper punches 61 and forming blocks 62 behind the upper pressure head 4 and the lower pressure head 5 according to the movement direction of the steel sheet 3. The processing method is as follows: The steel sheet 3 is placed on the conveying mechanism, and the operation switch of the processing mold is started. The conveying mechanism transports the steel sheet 3 to the upper pressure head 4 and the lower pressure head 5. The upper mold base 1 closes and abuts against the lower mold base 2. The upper pressure block 41 of the upper pressure head 4 abuts against and is embedded in the upper surface of the steel sheet 3, and the lower pressure block 51 of the lower pressure head 5 abuts against and is embedded in the lower surface of the steel sheet 3, thereby pressing out multiple concave holes 31 on the upper and lower surfaces of the steel sheet 3 at the same time. The upper mold base 1 opens and moves upward. The conveying mechanism continues to convey the steel sheet 3 with concave holes 31 to the upper punch 61 and the forming block 62. Then the upper mold base 1 continues to close and abut against the lower mold base 2, so that the upper punch 61 and the forming block 62 punch the steel sheet 3 with concave holes 31 to form the paper pressing steel sheet 10. The repeated mold closing and opening actions, combined with the conveying action of the conveying mechanism, continuously press out multiple recesses 31 on the upper and lower surfaces of the steel sheet 3, and continuously press the steel sheet 3 with recesses 31 to form the paper pressing steel sheet 10.

[0017] Specifically, in the traditional paper pressing steel sheet stamping process, due to the concentrated effect of the stamping force, the internal stress distribution of the steel sheet is extremely uneven, which easily leads to stress concentration, causing the steel sheet to warp and deform after stamping, affecting its flatness.

[0018] In this embodiment, multiple upper pressing blocks 41 at the lower end of the upper pressing head 4 and multiple lower pressing blocks 51 at the upper end of the lower pressing head 5 are used to simultaneously press out multiple recessed holes 31 on the upper and lower surfaces of the steel sheet 3, such as... Figure 6 and Figure 7As shown, the steel sheet 3 with concave holes 31 is then punched by the upper punch 61 and the forming block 62 to form the paper pressing steel sheet 10. This can effectively avoid stress concentration during the punching process, release the ductility of the paper pressing steel sheet 10 itself, and make the paper pressing steel sheet 10 less prone to warping and deformation. It can always maintain a high degree of flatness, thereby better pressing the paper in the subsequent printing process and ensuring the printing quality.

[0019] In addition, the conveying mechanism on one side of the mold can automatically transport the steel sheet 3 from one side of the mold to the other side. Multiple upper pressing blocks 41 at the lower end of the upper pressing head 4 and multiple lower pressing blocks 51 at the upper end of the lower pressing head 5 first press out concave holes 31 on the steel sheet 3. Then, the upper punch 61 and the forming block 62 immediately stamp and form the steel sheet 3 with concave holes 31. The entire processing flow is coherent and compact, which improves the overall production efficiency.

[0020] In this embodiment, the upper pressing block 41 and the lower pressing block 51 are arranged in a uniform distribution, but are not limited to this. This arrangement can ensure the uniform distribution of stress on the steel sheet 3 and improve the processing quality of the subsequent paper pressing steel sheet 10.

[0021] It should be noted that this embodiment does not limit the shape and quantity of the upper punch 61 and the forming block 62. The accompanying drawings only show the relative positional relationship between the upper punch 61 and the forming block 62 and other components on the upper mold base 1 and the lower mold base 2. Operators can adjust the shape and quantity of the upper punch 61 and the forming block 62 according to the actual situation to meet the needs of paper pressing steel sheets 10 of different shapes and sizes.

[0022] like Figures 3 to 5 As shown, in this embodiment, the upper pressure block 41 and the lower pressure block 51 are both in the shape of a regular square frustum, which makes the pressure transmission process more stable and uniform. The upper pressure head 4 and the upper pressure block 41, as well as the lower pressure head 5 and the lower pressure block 51, are all integrally formed, which helps to improve the service life. In addition, the hardness of the material used to make the upper pressure head 4 and the upper pressure block 41, as well as the lower pressure head 5 and the lower pressure block 51, should be greater than the hardness of the steel sheet 3 to ensure smooth processing.

[0023] Furthermore, in this embodiment, the base side length of the regular square truncated pyramid is between 0.7 and 1.0 mm, the top side length is between 0.5 and 0.7 mm, and the height is between 0.5 and 0.7 mm. This satisfies the requirements for stress distribution adjustment of the paper-pressing steel sheet 10 during subsequent stamping and forming, without affecting the overall strength of the paper-pressing steel sheet 10 due to excessively large openings. Of course, in other embodiments, the dimensions of the regular square truncated pyramid can be adjusted according to actual needs.

[0024] like Figure 1 and Figure 2As shown, this embodiment also includes a leveling head 7, which is disposed on the upper die base 1 and is positioned behind the upper punch 61 in accordance with the movement direction of the steel sheet 3.

[0025] Specifically, after the upper punch 61 and the forming block 62 press the steel sheet 3 with the concave hole 31 to form the paper pressing steel sheet 10, the leveling press head 7 can perform a secondary leveling process on the paper pressing steel sheet 10, so that the paper pressing steel sheet 10 maintains a sufficiently high flatness, thereby better pressing the paper in the subsequent printing process and ensuring print quality. Of course, a buffer return spring 63 can also be set below the forming block 62 to improve the forming quality.

[0026] like Figure 1 and Figure 2 As shown, this embodiment also includes a stripping punch 8, which is disposed on the upper die base 1. The stripping punch 8 is disposed behind the leveling head 7 in accordance with the movement direction of the steel sheet 3. The lower die base 2 has a material discharge channel 21 at the position corresponding to the stripping punch 8.

[0027] Specifically, the upper punch 61 and the forming block 62 press the steel sheet 3 with concave holes 31 to form a paper-pressing steel sheet 10. That is, a portion of the steel sheet 3 is formed into a paper-pressing steel sheet 10 through punching, and at this time, the edge of the paper-pressing steel sheet 10 is still connected to the steel sheet 3. Therefore, in this embodiment, the downward movement of the stripping punch 8 allows the paper-pressing steel sheet 10 with concave holes 31 and secondary leveling treatment to fall off the steel sheet 3 into the unloading channel 21 of the lower die base 2, thereby completing the unloading process. The structure is simple.

[0028] like Figure 1 As shown, the conveying mechanism in this embodiment is a conveyor belt 9. Specifically, the conveyor belt 9 can be connected to a servo motor drive (not shown in the figure), so that the steel sheet 3 stops moving when the upper mold base 1 and the lower mold base 2 are closed, and is conveyed when the upper mold base 1 and the lower mold base 2 are open. The structure is simple and easy to set up, but it is not limited to this.

[0029] The directional terms used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the design of this case. All equivalent changes made based on the key design features of this case shall fall within the protection scope of this case.

Claims

1. A method of processing a press sheet steel characterized in that: The application relates to a processing die for a paper pressing steel sheet, which comprises an upper die base, a lower die base and a conveying mechanism arranged on one side of the die, wherein the steel sheet is placed on the conveying mechanism and located between the upper die base and the lower die base to move from one side of the die to the other side of the die through the conveying mechanism; the upper die base is provided with an upper pressing head, the lower die base is provided with a lower pressing head at a position corresponding to the upper pressing head, the lower end of the upper pressing head is provided with a plurality of upper pressing blocks, and the upper end of the lower pressing head is provided with a plurality of lower pressing blocks; the upper die base and the lower die base are respectively provided with an upper punch and a forming block corresponding to each other behind the upper pressing head and the lower pressing head in the movement direction of the steel sheet. The processing method is as follows: the steel sheet is placed on the conveying mechanism, the running switch of the processing die is started, the conveying mechanism conveys the steel sheet to the upper pressing head and the lower pressing head, the upper die base is clamped against the lower die base, the upper pressing blocks of the upper pressing head are clamped against and embedded into the upper surface of the steel sheet, the lower pressing blocks of the lower pressing head are clamped against and embedded into the lower surface of the steel sheet, so that a plurality of concave holes are pressed out on the upper surface and the lower surface of the steel sheet at the same time; the upper die base is opened and goes up, the conveying mechanism continues to convey the steel sheet with the concave holes to the upper punch and the forming block, then the upper die base continues to be clamped against the lower die base, so that the upper punch and the forming block stamp the steel sheet with the concave holes to form the paper pressing steel sheet; the clamping and opening actions are repeated to match the conveying action of the conveying mechanism, so that the upper surface and the lower surface of the steel sheet continuously press out a plurality of concave holes and the steel sheet with the concave holes is continuously stamped to form the paper pressing steel sheet.

2. The method of claim 1 wherein: The shapes of the upper pressing blocks and the lower pressing blocks are all regular quadrangular frustums.

3. The method of claim 2 wherein: The bottom side length of the regular quadrangular frustum is between 0.7 and 1.0 mm, the top side length is between 0.5 and 0.7 mm, and the height is between 0.5 and 0.7 mm.

4. The method of claim 1 wherein: The processing die further comprises a flattening pressing head arranged on the upper die base and arranged behind the upper punch in the movement direction of the steel sheet.

5. The method of claim 1 wherein: the steel sheet is a press sheet. The processing die further comprises a material removing punch arranged on the upper die base and arranged behind the flattening pressing head in the movement direction of the steel sheet, and the lower die base is provided with a material removing passage at a position corresponding to the material removing punch. ​ 6. The method of claim 1 wherein: The conveying mechanism is a conveying belt.

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