Back flannelette abrasive paper sheet stamping equipment facilitating discharging

Abstract

The invention discloses a flannelette-backed abrasive paper sheet stamping device convenient for discharging, and relates to the technical field of abrasive paper processing equipment, the flannelette-backed abrasive paper sheet stamping device comprises a stamping base; two mounting frames; the two mounting frames are mounted on the stamping base; the hydraulic machine is mounted on the mounting frame, the output end of the hydraulic machine is connected with a punching head, and a waste cavity is formed in the punching head; the blanking blade is of an annular structure, and the blanking blade is installed on the punching head; the punching blade is installed on the punching head, the punching blade is located in the blanking blade, the punching blade communicates with the waste material cavity, and at least one limiting assembly is installed in the punching blade; the limiting assembly can prevent waste materials in the punching blade from falling off. According to the blanking device, waste generated when the back velvet abrasive paper sheet is blanked can be cleaned in time, and it is guaranteed that blanking work can be normally carried out.

Description

Technical Field

[0001] The invention relates to the technical field of sandpaper processing equipment, and in particular to a back-pile sandpaper sheet punching equipment which is convenient for material discharge. Background Art

[0002] Flannel-backed sandpaper is a common type of sandpaper. As the name implies, it is a layer of velvet cloth on the back of the sandpaper. It is widely used in industry and home maintenance due to its fast grinding, high efficiency, applicability to a variety of materials, and uniform grinding effect. The sandpaper adopts electrostatic planting, so that all the sand grains face outward, the cutting is sharp, the sand planting is uniform, and the effect is more uniform than other products, without leaving uneven sand marks. When manufacturing velvet-backed sandpaper sheets, punching is an important part of the production process of velvet-backed sandpaper sheets. Punching can ensure that the size and shape of the sandpaper meet the use requirements.

[0003] In the prior art, when a velvet sandpaper sheet stamping equipment is producing velvet sandpaper sheets, it is necessary to use a stamping die to process the velvet sandpaper sheets. There are many types of stamping dies, and a punching die is used in the hole opening process. When a traditional punching die is used to open holes in the velvet sandpaper sheets, a large amount of waste will be generated. A large amount of waste will accumulate in the processing area, which will affect the processing accuracy of the velvet sandpaper sheets. Summary of the invention

[0004] The purpose of the present invention is to provide a back-pile sandpaper sheet punching equipment that is easy to discharge, which can propose a solution to the problem in the prior art that a large amount of waste material accumulates in the working area when the back-pile sandpaper sheet is punched, and can promptly clean up the waste material generated by the back-pile sandpaper sheet during punching, ensuring that the punching work can proceed normally.

[0005] The present invention is achieved through the following technical solutions:

[0006] A back-flannel sandpaper sheet stamping device that is convenient for material discharge comprises: a stamping base; two mounting frames; the mounting frames are mounted on the stamping base; a hydraulic press, the hydraulic press is mounted on the mounting frames, the output end of the hydraulic press is connected to a stamping head, a waste material cavity is arranged in the stamping head; a punching blade, the punching blade is an annular structure, the punching blade is mounted on the stamping head; and at least one punching blade, the punching blade is mounted on the stamping head, the punching blade is located in the punching blade, the punching blade is connected to the waste material cavity, and at least one limiting component is installed in the punching blade; wherein the limiting component can prevent the waste material in the punching blade from falling.

[0007] Furthermore, in the present invention, the above-mentioned limit assembly includes a limit piece and a sliding groove; the sliding groove is obliquely arranged on the inner side wall of the punching blade, and a limit groove is opened on the surface wall of the sliding groove along the extension direction; the limit piece is at least partially located in the sliding groove, and the side wall of the limit piece is connected to the limit block, and the limit block can move in the limit groove; in the limited state, the limit piece slides out of the sliding groove under the action of gravity; in the non-limited state, the limit piece slides into the sliding groove under the thrust of the waste material.

[0008] Furthermore, in the present invention, the above also includes an elastic member, one end of the elastic member is connected to the surface wall of the sliding groove, and the other end of the elastic member is connected to the limiting member; wherein the elastic member can pop at least part of the limiting member out of the sliding groove.

[0009] Furthermore, in the present invention, the above also includes: a waste collection box, a waste collection pipe and an absorption assembly; the absorption assembly is installed in the waste collection box, one end of the waste collection box is provided with an air inlet, and the other end of the waste collection box is provided with an air outlet; one end of the waste collection pipe is connected to the air inlet, and the other end of the waste collection pipe is connected to the waste cavity; wherein the absorption assembly can suck the waste in the waste cavity into the waste collection box.

[0010] Furthermore, in the present invention, the above-mentioned absorption component includes a motor and an impeller; a waste collection chamber is provided in the waste collection box, the waste collection chamber is connected to the air inlet, an installation chamber is provided in the waste collection box, the installation chamber is connected to the air outlet, and a first dustproof partition is installed between the waste collection chamber and the installation chamber; the motor is installed in the installation chamber, and the output end of the motor is connected to the impeller; wherein, when the motor drives the impeller to rotate, the impeller can form a negative pressure area in the waste collection chamber.

[0011] Furthermore, in the present invention, the air outlet is provided with a second dustproof baffle, and the second dustproof baffle can prevent waste materials from the outside from entering the installation cavity.

[0012] Furthermore, in the present invention, the waste collection pipe is made of flexible material.

[0013] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0014] At least one limiting component is installed in the punching blade, and the limiting component can limit the waste material in the punching blade to prevent the waste material in the punching blade from falling into the working area of ​​the punching base. Furthermore, when the punching head drives the punching blade to lift up and move to the preset position of the back velvet sandpaper, the waste material in the punching blade will not fall under the limitation of the limiting component. When the punching blade punches the back velvet sandpaper disc at the preset position again, the newly cut waste material will enter the punching blade, and the old waste material accumulated in the punching blade will be pushed into the waste cavity of the punching head, thereby forming a cyclic waste cleaning process, and the waste material can be uniformly collected in the waste cavity, which can improve the staff's efficiency in cleaning the waste in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of a velvet-backed sandpaper sheet punching device that is convenient for material discharge;

[0017] Figure 2 A schematic diagram of the positional relationship between the blanking blade and the punching blade;

[0018] Figure 3 is a longitudinal cross-sectional view of a punching blade;

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0020] Figure 5 is a longitudinal sectional view of a waste collection box;

[0021] Figure 6 It is a schematic diagram of a velvet-backed sandpaper disc;

[0022] Figure 7 Schematic diagram of the internal structure of the punch head.

[0023] Marks and corresponding parts names in the attached drawings:

[0024] 1-first mounting frame, 2-second mounting frame, 3-hydraulic press, 4-punching head, 5-punching blade, 6-waste collection box, 7-waste collection tube, 8-punching blade, 9-sliding groove, 10-limiting member, 11-limiting groove, 12-limiting block, 13-elastic member, 14-waste chamber, 15-air outlet, 16-waste collection chamber, 17-installation chamber, 18-impeller, 19-motor, 20-first dustproof baffle, 21-second dustproof baffle, 22-air inlet. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0026] In order to explain the present invention more clearly, some of the terms appearing below will be explained below:

[0027] Blanking: Blanking is a stamping process that uses a die to separate part of the material or process parts from another part of the material, process parts or waste. It includes shearing, blanking, punching, notching, notching, cutting, chiseling, trimming, tongue cutting, cutting, trimming and other separation processes.

[0028] Fleece-backed sandpaper: Sandpaper is mainly formed by the fleece-backed process and then adhered to electric or pneumatic tools for use; fleece-backed sandpaper needs to be cut into circles during the production process. Round fleece-backed sandpaper is more likely to provide a better operating experience. Users can control the center of the sandpaper and perform rotary grinding, which can more effectively control the direction and strength of grinding. The holes in the fleece-backed sandpaper can improve the working efficiency of the sandpaper and reduce the wear of the sandpaper. ‌

[0029] Example

[0030] Please refer to Figure 1 and Figure 2. In some embodiments of the present application, in the production process of back velvet sandpaper, the stamping step is a very critical step. Stamping can reduce material waste because the mold can accurately control the cutting and separation of the material and reduce the generation of waste. In addition, the quality of sandpaper produced by stamping is more uniform, which reduces the need for subsequent processing, thereby reducing costs. The stamping base serves as a stamping work surface for the back velvet sandpaper. The hydraulic press 3 is installed above the stamping base through the mounting frame 12. The output end of the hydraulic press 3 is connected to the stamping head 4. The stamping head 4 is equipped with a ring-shaped punching blade 5. The punching blade 5 can punch the back velvet sandpaper on the stamping base into a plurality of back velvet sandpaper discs. A plurality of punching blades 8 can be installed on the stamping head 4. The plurality of punching blades 8 are all located in the punching blade 5. The plurality of punching blades 8 can open holes on the back velvet sandpaper discs to meet the production needs. The punching blade 8 is a hollow cylindrical structure. When the punching blade 8 makes a hole in the velvet sandpaper disc, the waste material cut off from the velvet sandpaper disc is accumulated in the punching blade 8. If the punching head 4 drives the punching blade 8 to lift up, the waste material in the punching blade 8 will fall into the working area of ​​the punching base, thereby affecting the subsequent processing accuracy of the velvet sandpaper disc. In the present application, at least one limiting component is installed in the punching blade 8, and the limiting component can limit the waste material in the punching blade 8 to prevent the waste material in the punching blade 8 from falling into the working area of ​​the punching base. Furthermore, when the punching head 4 drives the punching blade 5 to lift up and move to the preset position of the back-pile sandpaper, the waste in the punching blade 8 will not fall due to the limit of the limit assembly, and when the punching blade 8 punches the back-pile sandpaper disc at the preset position again, the newly cut waste will enter the punching blade 8, and the old waste accumulated in the punching blade 8 will be pushed into the waste cavity 14 of the punching head 4, thereby forming a cyclic waste cleaning process, and the waste can be uniformly collected in the waste cavity 14, which can improve the staff's efficiency in cleaning the waste in the later stage.

[0031] Among them, six punching blades 8 can be installed on the punching head 4, and the six punching blades 8 are all located in the punching blade 5. The six punching blades 8 can open six holes in the back velvet sandpaper disc, which can improve the working efficiency of the sandpaper and reduce the wear of the sandpaper.

[0032] Please refer to Figures 1 to 4 , Figure 6 and Figure 7 For example, the limiting assembly includes a sliding groove 9 provided on the inner side wall of the punching blade 8, one end of the sliding groove 9 is connected to the inside of the punching blade 8, and the height of the sliding groove 9 connected to the end of the punching blade 8 is set to H 1 , set the height of the other end of the sliding groove 9 to H 2 , H 2 The vertical height is higher than H 1The vertical height of the limit member 10 is installed in the sliding groove 9, and the limit block 12 on the side wall of the limit member 10 is inserted into the limit groove 11 of the sliding groove 9, so that the limit member 10 can drive the limit block 12 to slide back and forth in the limit groove 11. When the limit block 12 slides to the first end in the limit groove 11, the limit member 10 can completely enter the sliding groove 9; when the limit block 12 slides to the second end in the limit groove 11, at least part of the limit member 10 can pass through the sliding groove 9 and extend to the inside of the punching blade 8. Specifically, the punching blade 8 opens a hole on the back velvet sandpaper disc, and the cut waste enters the punching blade 8. The waste will push the limit member 10 to drive the limit block 12 to slide toward the first end of the limit groove 11 until the limit member 10 completely enters the sliding groove 9 and no longer limits the waste, and the waste can pass through the limit member 10 and enter the hole-opening blade. After the waste passes through the limit piece 10, it no longer pushes the limit piece 10. Under the action of gravity, the limit piece 10 drives the limit block 12 to slide toward the second end of the limit groove 11, so that at least part of the limit piece 10 can pass through the sliding groove 9 and extend to the inside of the punching blade 8, thereby limiting the waste passing through the limit piece 10 and preventing the waste in the punching blade 8 from falling into the outside.

[0033] Among them, in the punching work of the back velvet sandpaper, usually multiple sheets of back velvet sandpaper are overlapped and placed on the punching base for punching, so as to improve the punching efficiency. The punching blade 8 can punch holes in the overlapping multiple sheets of back velvet sandpaper, and the waste cut off from the multiple sheets of back velvet sandpaper enters the punching blade 8. The waste below can push the waste above to move into the punching blade 8, so that the waste can push the limiter 10 into the sliding groove 9, so that the waste can pass through the limiter 10 and enter the inside of the hole-opening blade.

[0034] Please refer to Figures 1 to 4 , Figure 6 and Figure 7 . For example, the elastic member 13 can be a return spring or elastic rubber, for example, one end of the return spring is connected to the surface wall of the sliding groove 9, and the other end of the return spring is connected to the limiter 10. On the one hand, the return elasticity can apply elastic force to the limiter 10 to prevent the limiter 10 from being stuck in the sliding groove 9 in an accidental situation, affecting the limiting effect of the limiter 10 on the waste; and the limiter 10 has a more stable limiting ability under the action of the return spring; on the other hand, after the waste in the punching blade 8 passes through the limiter 10, the limiter 10 can quickly pop out of the sliding groove 9 under the action of the return spring, so that the waste just entering the perforating blade can be limited, avoiding the waste falling back to the outside of the punching blade 8 under the influence of gravity, thereby improving the interception rate of the waste.

[0035] Please refer to Figure 5. In some embodiments of the present application, the waste collection box 6 can collect waste generated during the punching work. The waste collection box 6 is provided with an air inlet 22 and an air outlet 15. An absorption component is installed in the waste collection box 6. The waste cavity 14 of the punch head 4 is connected to the air inlet 22 of the waste collection box 6 through the waste collection pipe 7. The staff needs to clean the waste cavity 14 of the punch head 4 regularly to avoid excessive accumulation of waste in the waste cavity 14 affecting the punching work of the punching blade 8 on the back velvet sandpaper disc. Specifically, the absorption component can form a negative pressure at the air inlet 22 in the waste collection box 6, thereby generating a large suction force at the air inlet 22. The suction force will pass through the waste collection pipe 7 to the waste cavity 14, so that the waste in the waste cavity 14 can be sucked into the waste collection pipe 7, and finally fall into the waste collection box 6. The high-pressure gas in the waste collection box 6 is finally discharged from the air outlet 15. Furthermore, the waste material punched out from the back velvet sandpaper disc has corresponding elasticity, and multiple waste materials entering the punching blade 8 will be squeezed and deformed, which may cause multiple waste materials to be stuck in the punching blade 8, causing the punching blade 8 to be unable to continue punching the back velvet sandpaper disc. In the present application, the waste material blocked in the punching blade 8 can be sucked out by the high pressure generated by the absorption component, which effectively solves the problem of internal blockage of the punching blade 8. Further, the waste collection box 6 can be used in conjunction with the limiting component to improve the cleaning efficiency of the waste material. Specifically, the limiting member 10 can limit the waste material by the action of gravity. When the punching blade 8 punches the back velvet sandpaper disc next time, the thrust of the new waste material is used to push the old waste material in the punching blade 8 into the waste material cavity 14, thereby realizing the cleaning of the waste material without the help of external electricity and other auxiliary means. Only when the waste material in the waste cavity 14 accumulates a lot, the absorption component can use high-pressure air to suck the waste material into the waste collection box 6, so the absorption component does not need to be in a working state all the time, which greatly saves electric energy.

[0036] For example, the absorption component can be composed of a motor 19 and an impeller 18 installed on the motor 19. The motor 19 is installed in the installation cavity 17 in the waste collection box 6. The motor 19 can drive the impeller 18 to rotate at high speed and form a vacuum in the installation cavity 17. The higher the vacuum degree in the installation cavity 17, the lower the air pressure. As a result, the installation cavity 17 and the external atmospheric pressure generate air movement to form vacuum molecules. The flow generates high-speed airflow to form a strong suction force. The suction force can suck the waste in the waste cavity 14 into the waste collection cavity 16 through the waste collection pipe 7. The first dustproof plate can block the waste in the waste collection cavity 16 to prevent the waste from entering the installation cavity 17 and damaging the high-speed rotating motor 19.

[0037] For example, the air outlet 15 is installed with a second dustproof baffle 21, which can prevent external waste from entering the installation cavity 17 through the air outlet 15, thereby preventing the waste from damaging the high-speed rotating motor 19 in the installation cavity 17.

[0038] In some embodiments of the present application, the waste collection box 6 is connected to the punch head 4 via a waste collection tube 7. The flexible waste collection tube 7 can be bent or extended at any angle and is suitable for working conditions with special terrain or narrow terrain.

[0039] In summary, the embodiment of the present invention provides a back-flannel sandpaper punching device that is convenient for material discharge. At least one limiting component is installed in the punching blade 8. The limiting component can limit the waste material in the punching blade 8 to prevent the waste material in the punching blade 8 from falling into the working area of ​​the punching base. Furthermore, when the punching head 4 drives the punching blade 5 to lift up and move to the preset position of the back-flannel sandpaper, the waste material in the punching blade 8 will not fall under the limitation of the limiting component. When the punching blade 8 punches the back-flannel sandpaper disc at the preset position again, the newly cut waste material will enter the punching blade 8, and the old waste material accumulated in the punching blade 8 will be pushed into the waste cavity 14 of the punching head 4, thereby forming a cyclic waste cleaning process, and the waste material can be uniformly collected in the waste cavity 14, which can improve the staff's efficiency in cleaning the waste in the later stage.

[0040] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A back-pile sandpaper sheet punching device that is easy to discharge, characterized in that: include: Stamping base; A first mounting frame (1), the first mounting frame (1) being mounted on the stamping base; A second mounting frame (2), the second mounting frame (2) being mounted on the stamping base; A hydraulic press (3), the hydraulic press (3) being mounted on the first mounting frame (1) and the second mounting frame (2), the output end of the hydraulic press (3) being connected to a punch head (4), the punch head (4) being provided with a waste material chamber (14); A punching blade (5), the punching blade (5) being an annular structure, and the punching blade (5) being mounted on the punching head (4); as well as at least one punching blade (8), the punching blade (8) being mounted on the punching head (4), the punching blade (8) being located inside the blanking blade (5), the punching blade (8) being connected to the waste material chamber (14), and at least one limiting component being mounted inside the punching blade (8); The limiting component is capable of preventing waste material in the punching blade (8) from falling out.

2. The back-pile sandpaper sheet punching equipment for easy material discharge according to claim 1 is characterized in that: The limiting assembly comprises a limiting member (10) and a sliding groove (9); The sliding groove (9) is obliquely arranged on the inner side wall of the punching blade (8), and a limiting groove (11) is formed on the surface wall of the sliding groove (9) along the extension direction; At least a portion of the limiting member (10) is located in the sliding groove (9); a side wall of the limiting member (10) is connected to a limiting block (12); and the limiting block (12) is movable in the limiting groove (11); In the limited state, the limit member (10) slides out of the sliding groove (9) under the action of gravity; In the non-limiting state, the limiting member (10) slides into the sliding groove (9) under the thrust of the waste material.

3. The back-pile sandpaper sheet punching equipment for easy material discharge according to claim 2 is characterized in that: It also comprises an elastic member (13), one end of the elastic member (13) being connected to the surface wall of the sliding groove (9), and the other end of the elastic member (13) being connected to the limiting member (10); Wherein, the elastic member (13) is capable of ejecting at least a portion of the limiting member (10) out of the sliding groove (9).

4. The back-pile sandpaper sheet punching equipment for easy material discharge according to claim 2 is characterized in that: Also includes: A waste collection box (6), a waste collection pipe (7) and an absorption component; The absorption assembly is installed in the waste collection box (6), one end of the waste collection box (6) is provided with an air inlet (22), and the other end of the waste collection box (6) is provided with an air outlet (15); One end of the waste collection pipe (7) is in communication with the air inlet (22), and the other end of the waste collection pipe (7) is in communication with the waste chamber (14); The absorption component is capable of sucking waste in the waste chamber (14) into the waste collection box (6).

5. The back-pile sandpaper sheet punching equipment for easy material discharge according to claim 4 is characterized in that: The absorption component comprises a motor (19) and an impeller (18); The waste collection box (6) has a waste collection chamber (16) therein, the waste collection chamber (16) is in communication with the air inlet (22), the waste collection box (6) has a mounting chamber (17) therein, the mounting chamber (17) is in communication with the air outlet (15), and a first dustproof partition plate (20) is installed between the waste collection chamber (16) and the mounting chamber (17); The motor (19) is installed in the installation cavity (17), and the output end of the motor (19) is connected to the impeller (18); When the motor (19) drives the impeller (18) to rotate, the impeller (18) can form a negative pressure area in the waste collection chamber (16).

6. The back-pile sandpaper sheet punching equipment for easy material discharge according to claim 5 is characterized in that: A second dustproof baffle (21) is installed in the air outlet (15), and the second dustproof baffle (21) can prevent waste materials from the outside from entering the installation cavity (17).

7. The back-pile sandpaper sheet punching equipment for easy discharge according to any one of claims 4 to 6, characterized in that: The waste collection pipe (7) is made of flexible material.

Images