Punching device capable of preventing material jumping

Abstract

The invention discloses an anti-jumping punching device, and relates to the technical field of punching devices. The die comprises an upper die, a lower die and a lower die, a cavity is formed in the upper die, and a plurality of hollow punches communicated with the cavity are mounted at the bottom of the upper die; a plurality of blanking holes allowing the punches to enter are formed in the lower die; and the air supply assembly is mounted on the upper die and is communicated with the cavity. By the adoption of the technical scheme, waste generated during workpiece punching can be smoothly and rapidly discharged through the blanking hole under the thrust of the punch and blowing of downward airflow, and the situation that the work efficiency and the service life of the punching device are affected due to waste jumping is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of punching device technology, and more specifically to a punching device for preventing material jumping. Background Technology

[0002] A punching machine is a mechanical device that uses a power mechanism to drive a die to precisely punch holes in metal materials. It is widely used in metal sheet processing, manufacturing, and other fields.

[0003] In traditional stamping equipment, scrap material often jumps out during the punching process. The scrap material may jump out of the mold cavity and stick to the mold surface due to impact force or material elasticity rebound. Some scrap material may also get stuck in the narrow gap between the upper and lower dies or inside the die cavity and cannot fall off naturally. Scrap material residue or scrap material can cause abnormal wear or even breakage of key mold components (such as the upper and lower dies), all of which require machine shutdown and cleaning, affecting production efficiency. There is an urgent need for a punching device that prevents scrap material from jumping out to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings and deficiencies of the prior art by providing a punching device that prevents material jumping. The waste generated during workpiece punching can be smoothly and quickly discharged through the discharge hole under the thrust of the punch and the blowing of the downward airflow, effectively preventing waste from jumping and affecting the working efficiency and service life of the punching device.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a punching device for preventing material jumping, comprising: The upper die has a cavity inside, and several hollow punches that communicate with the cavity are installed at the bottom of the upper die; The lower die has several blanking holes for the punch to enter; An air supply assembly is mounted on the upper mold and communicates with the cavity.

[0006] Optionally, the air supply assembly includes an air pump and an air supply pipe. The air supply pipe is fixed to the upper mold and communicates with the cavity. The air outlet of the air pump is connected to the outer end of the air supply pipe.

[0007] Optionally, a support base is installed at the bottom of the lower mold, and a hopper is detachably connected to the bottom of the support base, the hopper surrounding a plurality of the discharge holes.

[0008] Optionally, an air extraction component is installed below the hopper, and the air extraction end of the air extraction component is connected to the material discharge hole.

[0009] Optionally, the bottom of the hopper has a through hole, and the air extraction assembly includes a vacuum pump, an air extraction pipe and an exhaust pipe. The air inlet end of the air extraction pipe is connected to the through hole, and a filter screen is installed inside the air inlet end of the air extraction pipe. The vacuum pump is installed between the air extraction pipe and the exhaust pipe.

[0010] Optionally, the upper surface of the lower die has several arc-shaped protrusions, and the blanking hole is located on the protrusions.

[0011] Optionally, at least one pair of guide rods are slidably connected between the upper mold and the lower mold.

[0012] Optionally, the lower mold is equipped with a plurality of limiting rods for workpiece positioning, and the bottom of the upper mold has a plurality of holes for the limiting rods to enter.

[0013] Optionally, the bottom of the hopper has a through hole, and a connecting pipe is connected between the air pump inlet and the through hole.

[0014] Optionally, the air supply pipe and / or connecting pipe is a flexible hose.

[0015] After adopting the above technical solution, the beneficial effects of the present invention are as follows: The waste generated during workpiece punching can be discharged through the blanking hole under the thrust of the punch. During the return stroke of the lower die, the air supply component is activated, which sends external air into the cavity and then ejects it through the hollow punch. The ejected airflow will flush the waste downwards, which helps the waste to be discharged quickly from the blanking hole and effectively avoids the waste jumping out, which would affect the working efficiency and service life of the stamping device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall main view (including vacuum pump, suction pipe and exhaust pipe) of the present invention; Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention (including the vacuum pump, the suction pipe, and the exhaust pipe); Figure 3 This is a bottom view schematic diagram of the support base and hopper structure of the present invention; Figure 4 This is a schematic diagram of the overall main view cross-section of the present invention (including the vacuum pump, the suction pipe, and the exhaust pipe); Figure 5This is a schematic diagram of the overall three-dimensional structure of the present invention (excluding the upper part of the lower mold); Figure 6 This is a schematic diagram of the overall main view (including connecting pipes) of the present invention; Figure 7 This is the present invention. Figure 4 A magnified schematic diagram of part A in the diagram.

[0018] Explanation of reference numerals in the attached drawings: Upper die 1, Lower die 2, Punch 3, Guide rod 4, Air pump 5, Air supply pipe 6, Support base 7, Vacuum pump 8, Air extraction pipe 9, Exhaust pipe 10, Hopper 11, Material drop hole 12, Limiting rod 13, Protrusion 14, Cavity 15, Connecting pipe 16. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present invention.

[0021] This embodiment relates to a punching device for preventing material spillage, such as... Figure 1 , 2 As shown in Figure 4, the assembly includes: an upper die 1, a lower die 2, and an air supply component. The upper die 1 has a cavity 15 inside, and several hollow punches 3 connected to the cavity 15 are installed at the bottom of the upper die 1. The lower die 2 has several blanking holes 12 for the punches 3 to enter, and several limiting rods 13 for workpiece positioning are installed on the lower die 2. The bottom of the upper die 1 has several holes for the limiting rods 13 to enter. The air supply component is installed on the upper die 1 and is connected to the cavity 15.

[0022] In this scheme, before punching the workpiece, the workpiece to be punched is placed between the upper die 1 and the lower die 2, and located inside several limiting rods 13. The limiting rods 13 are used to limit the workpiece. Then, the power components (not shown), such as cylinders and hydraulic cylinders, drive several punches 3 at the bottom of the upper die 1 to punch the workpiece downward. The waste generated by punching the workpiece can be discharged through the discharge hole 12 under the thrust of the punches 3. During the return stroke of the lower die 2, the air supply component is activated. The air supply component will send external air into the cavity 15 and then spray it out through the hollow punches 3. The sprayed airflow will flush the waste down, which is conducive to the waste being discharged quickly from the discharge hole 12, effectively avoiding the waste jumping and affecting the working efficiency and service life of the stamping device.

[0023] Specifically, such as Figure 1 and 4As shown, the air supply assembly includes an air pump 5 and an air supply pipe 6. The air supply pipe 6 is fixed on the upper mold 1 and communicates with the cavity 15. The air outlet of the air pump 5 is connected to the outer end of the air supply pipe 6.

[0024] In this solution, when the air supply component is in use, the air pump 5 is powered on, and the air pump 5 draws outside air into the air supply pipe 6. The airflow is then delivered to the cavity 15 through the air supply pipe 6 and then ejected through several hollow punches 3. The air supply component can position the stamped workpiece and prevent scrap material from jumping out. This has been described in detail in the above embodiments and will not be repeated here.

[0025] like Figure 1-3 As shown, a support base 7 is installed at the bottom of the lower mold 2. A hopper 11 is detachably connected to the bottom of the support base 7, and the hopper 11 surrounds several material discharge holes 12.

[0026] In this design, the support base 7 supports the lower mold 2 and the hopper 11, which collects the waste material discharged from the discharge hole 12. The support base 7 and the hopper 11 are detachably connected, making it easy for workers to remove the hopper 11 from the support base 7 to empty the material.

[0027] like Figure 1 , 2 As shown in Figure 4, an air extraction assembly is installed below the hopper 11. The air extraction end of the air extraction assembly is connected to the material discharge hole 12. A through hole is opened at the bottom of the hopper 11. The air extraction assembly includes a vacuum pump 8, an air extraction pipe 9, and an exhaust pipe 10. The air inlet end of the air extraction pipe 9 is connected to the through hole, and a filter screen is installed inside the air inlet end of the air extraction pipe 9. The vacuum pump 8 is installed between the air extraction pipe 9 and the exhaust pipe 10.

[0028] In this scheme, when the punching device is in use, the vacuum pump 8 in the air extraction assembly is started. The vacuum pump 8 extracts the air from the hopper 11 through the air extraction pipe 9, making the hopper 11 negative pressure. The air in the discharge hole 12 is also extracted, which allows the workpiece to be adsorbed on the lower die 2. This is beneficial for the punching device to accurately punch the workpiece in the later stage. Then, the power components (not shown), such as cylinders and hydraulic cylinders, drive several punches 3 at the bottom of the upper die 1 to punch the workpiece downward. The waste generated by punching the workpiece enters the discharge hole 12 under the thrust of the punches 3. When the upper die 1 returns, the air supply assembly is started. The air supply assembly draws in the outside air to form an airflow that is sprayed into the discharge hole 12 through the punches 3. This can effectively prevent the waste from jumping out and affecting the working efficiency and service life of the punching device. At the same time, the negative pressure state of the hopper 11 generates a downward suction force on the waste in the discharge hole 12, which can further accelerate the discharge of waste and further prevent the waste from jumping out. It should be noted that in this scheme, the vacuum pump 8 is always in working condition, and the gas delivery component is only started when the upper mold 1 returns, which can reduce the working pressure of the vacuum pump 8 and save electricity.

[0029] like Figure 7As shown, the upper surface of the lower mold 2 has several arc-shaped protrusions 14, and the blanking hole 12 is located on the protrusions 14.

[0030] In this design, during punching, the punch 3 exerts a large impact force on the blanking hole 12 of the lower die 2. By setting this point as an arc-shaped protrusion 14, the arc surface can quickly transmit the impact force to the surrounding area of ​​the protrusion 14, which can effectively prevent the lower die 2 and the workpiece from deforming.

[0031] like Figure 5 As shown, at least one pair of guide rods 4 are slidably connected between the upper mold 1 and the lower mold 2.

[0032] In this design, the guide rod 4 guides the upper die 1, enabling the upper die 1 to accurately press the workpiece on the lower die 2.

[0033] like Figure 6 As shown, the bottom of the hopper 11 has a through hole, and a connecting pipe 16 is connected between the air inlet of the air pump 5 and the through hole.

[0034] In this design, to reduce the cost of the stamping device and achieve airflow circulation, a connecting pipe 16 is installed between the hopper 11 and the air pump 5. The air pump 5 and connecting pipe 16 can replace the air extraction assembly. When the air pump 5 is working, it draws air from the hopper 11 into the connecting pipe 16, and then delivers the airflow to the cavity 15 through the air supply pipe 6. The airflow is then discharged through the punch 3 to impact the waste material. This airflow returns to the hopper 11, thus preventing airflow from being sprayed into the environment and polluting the air. The air supply pipe 6 and / or the connecting pipe 16 are flexible hoses to allow the stamping device to operate flexibly.

[0035] The above is only used to illustrate the technical solution of the present invention and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A jump preventing punching device characterized by comprising: include: The upper mold (1) has a cavity (15) inside, and a number of hollow punches (3) that communicate with the cavity (15) are installed at the bottom of the upper mold (1). The lower die (2) has several blanking holes (12) for the punch (3) to enter. An air supply assembly is installed on the upper mold (1) and communicates with the cavity (15).

2. A device for preventing the ejection of material according to claim 1, wherein: The air supply assembly includes an air pump (5) and an air supply pipe (6). The air supply pipe (6) is fixed on the upper mold (1) and communicates with the cavity (15). The air outlet of the air pump (5) is connected to the outer end of the air supply pipe (6).

3. A device for preventing the ejection of material according to claim 1, wherein: The lower mold (2) is equipped with a support base (7) at its bottom. The support base (7) is detachably connected to a hopper (11) at its bottom. The hopper (11) surrounds several of the material drop holes (12).

4. A device for preventing the ejection of material according to claim 3, wherein: An air extraction assembly is installed below the hopper (11), and the air extraction end of the air extraction assembly is connected to the material discharge hole (12).

5. A device for preventing the ejection of material according to claim 4, wherein: The hopper (11) has a through hole at the bottom. The air extraction assembly includes a vacuum pump (8), an air extraction pipe (9), and an exhaust pipe (10). The air inlet end of the air extraction pipe (9) is connected to the through hole, and a filter screen is installed inside the air inlet end of the air extraction pipe (9). The vacuum pump (8) is installed between the air extraction pipe (9) and the exhaust pipe (10).

6. A device for preventing the ejection of material according to claim 1, wherein: The upper surface of the lower mold (2) has several arc-shaped protrusions (14), and the blanking hole (12) is located on the protrusions (14).

7. A device for preventing the ejection of material according to claim 1, wherein: At least one pair of guide rods (4) are slidably connected between the upper mold (1) and the lower mold (2).

8. A device for preventing the ejection of material according to claim 1, wherein: The lower mold (2) is equipped with several limiting rods (13) for limiting the workpiece, and the bottom of the upper mold (1) has several holes for the limiting rods (13) to enter.

9. A device for preventing the ejection of material according to claim 1, wherein: The bottom of the hopper (11) has a through hole, and the air pump (5) is connected to the through hole by a connecting pipe (16).

10. A device for preventing the ejection of material according to claim 9, wherein: The air supply pipe (6) and / or connecting pipe (16) are flexible hoses.

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