Waste cleaning device for punching machine

Abstract

The present invention relates to the technical field of stamping dies, and in particular to a waste cleaning device for a stamping machine, comprising a waste collection mechanism, wherein the waste collection mechanism is provided with a plurality of through holes and channels, wherein the size of the through holes corresponds to the large-sized stamping area on the stamping die, and the first type of waste formed by stamping passes through the through holes and falls down, and the channel comprises an open end, a blind end and a receiving end, wherein the receiving end corresponds to the small-sized stamping area on the stamping die, and the open end is used to communicate with a negative pressure suction mechanism to suck the second type of waste formed by stamping from the receiving end and discharge it through the open end. The waste cleaning device for a stamping machine provided by the present invention reduces the phenomenon of waste jumping, reduces the generation of waste, reduces the defective rate, improves production and processing efficiency, and reduces costs.

Description

Technical Field

[0001] The invention relates to the technical field of stamping dies, and in particular to a waste cleaning device for a stamping machine. Background Art

[0002] Automobile engine sealing gasket, also known as cylinder gasket, is located between cylinder head and cylinder block. Its function is to fill the microscopic gap between cylinder block and cylinder head to ensure good sealing at the joint surface, that is, to ensure reliable sealing of gas, oil and water during normal operation of the engine, prevent air leakage in the cylinder and water jacket leakage, and keep the coolant and oil flowing from the engine body to the cylinder head from leaking; its working mechanism is to form an axial force through tightening the cylinder head bolts, so that the cylinder head presses the cylinder gasket, and the sealing ribs arranged on the cylinder gasket are elastically deformed when pressed by the cylinder head, forming contact pressure with the cylinder head and cylinder block, thereby realizing reliable sealing of gas, oil, water and other media; according to different materials, cylinder gaskets can be divided into metal asbestos gaskets, metal composite gaskets and all-metal gaskets.

[0003] At present, automobile engine sealing gaskets are mostly formed by stamping, that is, at room temperature, a pressure processing method is used to apply pressure to the material using a mold installed on a press to separate or plastically deform the material, thereby obtaining the required parts. The stamping die is an important component in the stamping process. The existing stamping dies on the market are prone to the phenomenon of small waste jumping during the stamping process. That is, the small waste that is stamped out does not fall into the waste collection area during the stamping process due to its light weight. Instead, due to the negative pressure airflow caused by the rapid withdrawal of the punch head, the small waste jumps to the stamping surface along with the punch head, and then the small waste is embedded in the surface of the next stamped part, resulting in product scrapping, causing material waste and increased costs, and reducing production efficiency. At the same time, it also has an adverse effect on the life of the stamping die. Summary of the invention

[0004] In order to solve the above technical problems existing in the prior art, the present invention provides a waste cleaning device for a stamping machine.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] The present invention provides a waste cleaning device for a stamping machine, comprising a waste collecting mechanism, wherein a plurality of through holes and channels are arranged on the waste collecting mechanism, wherein the size of the through holes corresponds to a large-size stamping area on a stamping die, and a first type of waste formed by stamping passes through the through holes and falls down, and the channel comprises an open end, a blind end and a receiving end, wherein the receiving end corresponds to a small-size stamping area on the stamping die, and the open end is used to communicate with a negative pressure suction mechanism to suck a second type of waste formed by stamping from the receiving end and discharge it through the open end.

[0007] Among them, the first type of waste refers to waste that is not easy to jump up during conventional stamping. It is generally larger in size and its weight is greater than the negative pressure adsorption force caused by the withdrawal of the punch head. Therefore, it can successfully fall into the waste collection area after stamping, such as round waste with a diameter greater than 12mm. The second type of waste refers to waste that may jump up during conventional stamping. It is generally smaller in size and lighter in weight. There is a certain probability that its weight is less than the negative pressure adsorption force caused by the withdrawal of the punch head, and it may be brought back to the stamping surface by the punch head, such as round waste with a diameter less than 12mm.

[0008] The waste cleaning device for a stamping machine provided by the present invention greatly reduces the phenomenon of waste jumping up during the stamping process of an engine sealing gasket, reduces the generation of waste, reduces the defective rate, improves production and processing efficiency, and reduces costs.

[0009] On the basis of the above technical solution, the present invention can also make the following technical improvements:

[0010] Furthermore, the blind end is provided with a vent to achieve communication between the channel and the outside air, so that the airflow in the channel always flows from the blind end to the open end.

[0011] The beneficial effect of adopting the above further technical solution is that it is easy to realize the suction of the second type of waste by the negative pressure suction mechanism and avoid the phenomenon of waste jumping up.

[0012] Furthermore, a wear-resistant substrate is provided on the inner bottom surface and / or the inner side surface of the channel, and a concave-convex pattern is provided on the wear-resistant substrate.

[0013] The beneficial effect of adopting the above-mentioned further technical solution is that the device body is generally made of plastic injection molding, which has low strength. Adding a wear-resistant substrate can reduce the friction and erosion of the waste on the inner wall of the channel and extend the service life of the device. At the same time, a concave and convex pattern is provided on the wear-resistant substrate so that a gap for air circulation is always maintained between the waste and the wear-resistant substrate, thereby preventing thin sheet waste from sticking to the smooth bottom surface, forming a negative pressure bonding effect, and preventing normal discharge.

[0014] Furthermore, the depth of the concave-convex pattern is smaller than the thickness of the second type of waste, and the size of a single concave-convex pattern is smaller than the size of the second type of waste.

[0015] The beneficial effect of adopting the above further technical solution is to prevent the second type of waste from being embedded in the concave-convex pattern.

[0016] Furthermore, a metal sensor is arranged in the channel.

[0017] The beneficial effect of adopting the above further technical solution is that by arranging a metal sensor in the channel, it is detected whether there is any second type of waste remaining during the suction process, thereby preventing the waste from jumping up.

[0018] Furthermore, before executing the stamping action, if the metal sensor senses the presence of metal in the channel, a warning message and / or a stamping stop message will be sent out, and the waste will be manually removed before the next stamping work is carried out, further ensuring the product yield.

[0019] Furthermore, the channel corresponds to at least two locations of the second type of waste.

[0020] The channel can connect multiple second-category waste locations. As long as there is connection space, one channel should be used to connect as many second-category waste locations as possible, so that the channel only needs one interface to connect to an external negative pressure source, simplifying the structure of the device.

[0021] Furthermore, the channel includes a main channel and a branch channel that are connected to each other and are used to collect the punched-out second type of waste. The main channel and the branch channel are smoothly connected at a connection point close to one side of the opening end.

[0022] The beneficial effect of adopting the above further technical solution is that the main channel and the branch channel are arranged to correspond to the position of the second type of waste, and are smoothly connected to facilitate the transportation of the second type of waste and prevent obstruction.

[0023] Furthermore, the vent includes a first vent and a second vent, the first vent is opened at a blind end of the main channel, and the second vent is opened at a blind end of the branch channel.

[0024] The beneficial effect of adopting the above further technical solution is to ensure that the gas flow in the main channel and the branch channel always flows from the blind end to the open end, so as to facilitate the suction of waste by the negative pressure suction mechanism.

[0025] Furthermore, the diameter of the vent is 2-8 mm, and the distance between the vent and the surface of the waste collection mechanism is 8-12 mm.

[0026] The beneficial effects of adopting the above-mentioned further technical solution are: setting the diameter of the vent to 2-8 mm is conducive to gas circulation and facilitates the suction of waste by the negative pressure suction mechanism; setting the distance between the vent and the surface of the waste collection mechanism to 8-12 mm, so that the vent is arranged close to the upper surface of the waste collection mechanism, preventing the air flow from generating vortices in the channel, and avoiding the second type of waste from being carried up or causing blockage.

[0027] Compared with the prior art, the present invention has the following technical effects:

[0028] The first type of waste falls through the through hole provided on the waste collection mechanism, thereby preventing the first type of waste from being sucked by the negative pressure suction mechanism and being stuck;

[0029] The second type of waste is sucked away by the negative pressure suction mechanism, so as to avoid the problem that the second type of waste falls through the through hole and causes the through hole to be blocked and the waste to jump up;

[0030] The waste cleaning device for a punching machine of the present invention greatly reduces the phenomenon of waste jumping up during the punching process of the engine sealing gasket, solves the technical problem of waste jumping up, reduces the scrap rate, improves product quality and finished product rate, improves production and processing efficiency, reduces production costs and raw material losses, and greatly increases the service life of the mold;

[0031] The waste cleaning device for a punching machine of the present invention can clean waste on the basis of the existing punching machine without changing the structure of the existing punching machine, and has low cost, high efficiency and wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram showing the structure of a waste cleaning device according to an embodiment of the present invention;

[0033] Figure 2 A schematic structural diagram showing another angle of the waste cleaning device according to an embodiment of the present invention;

[0034] Figure 3 A top view of a waste cleaning device according to an embodiment of the present invention is shown;

[0035] Figure 4 A schematic diagram showing the structure of a sealing gasket is shown;

[0036] Reference numerals:

[0037] 1. First connector; 2. Second connector; 3. Waste collection mechanism; 4. Main channel; 5. First main channel; 6. Second main channel; 7. Third main channel; 8. Vent; 9. Through hole; 10. Circular through hole; 11. Strip through hole; 12. Special-shaped through hole; 13. Second vent; 14. Branch channel; 15. First branch channel; 16. Second branch channel; 17. Third branch channel; 18. Metal sensor; 19. Connector; 20. Circular hole; 21. Strip hole; 22. Small-diameter hole; 23. Sealing gasket; 24. First vent. DETAILED DESCRIPTION

[0038] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0039] like Figure 1-3 As shown, the waste cleaning device for a stamping machine of the embodiment of the present invention includes a waste collecting mechanism 3, and a plurality of through holes 9 and a channel are arranged on the waste collecting mechanism 3. The through holes 9 include a plurality of circular through holes 10, bar through holes 11 and special-shaped through holes 12. Each circular through hole 10, bar through hole 11 and special-shaped through hole 12 is extended along the stamping direction, and the size and shape of the circular through holes 10, bar through holes 11 and special-shaped through holes 12 correspond to the large-sized stamping area on the stamping die. The first type of waste of various shapes formed by stamping respectively passes through the circular through holes 10, bar through holes 11 and special-shaped through holes 12 and falls; the channel includes an open end, a blind end and a receiving end, and the channel corresponds to the small-sized stamping area on the stamping die. The open end is used to communicate with a negative pressure suction mechanism to absorb the second type of waste formed by stamping from the receiving end and discharge it through the open end.

[0040] refer to Figure 4 The size and shape of the waste are explained. The first category of waste includes large-sized round waste, large-sized strip waste and large-sized special-shaped waste, among which large-sized round waste refers to round waste with a diameter greater than 12mm, large-sized strip waste refers to long strip waste with a long side greater than 12mm, and large-sized special-shaped waste refers to special-shaped waste with a maximum size greater than 12mm; the second category of waste refers to waste with a distance between any two points less than 12mm; large-sized round waste, large-sized strip waste and the second category of waste are waste formed by the stamping die punching out circular holes 20, strip holes 21 and small-diameter holes 22 on the sealing gasket 23, respectively, and large-sized special-shaped waste is waste formed by punching other blanking holes.

[0041] The channel corresponds to at least two positions of the second type of waste, and the channel includes a main channel 4 and a branch channel 14 that are connected to each other. The main channel 4 and the branch channel 14 are used to collect the second type of waste that is punched down. The main channel 4 and the branch channel 14 are smoothly connected at the connection near the open end. The main channel 4 includes a first main channel 5, a second main channel 6 and a third main channel 7 that are arranged at intervals. The first main channel 5, the second main channel 6 and the third main channel 7 are all grooves and extend along the surface of the waste collection mechanism 3 to collect the second type of waste formed by punching. The negative pressure suction mechanism is connected to one end of the first main channel 5, the second main channel 6 and the third main channel 7, and is used to absorb the second type of waste formed by stamping; the branch channel 14 includes a first branch channel 15, a second branch channel 16 and a third branch channel 17. The number and position of the branch channels 14 correspond to the number and position of the second type of waste formed at nearby positions during a stamping process. The first branch channel 15, the second branch channel 16 and the third branch channel 17 are all grooves and are arranged in sequence at intervals along a direction orthogonal to the extension direction of the third main channel 7.

[0042] The blind end of the channel not connected to the negative pressure suction mechanism is provided with a vent 8 to connect the channel with the outside air so that the airflow in the channel always flows from the blind end to the open end. The vent 8 includes a first vent 24 and a second vent 13. The first vent 24 is provided at the blind end of the main channel 4, and the second vent 13 is provided at the blind end of the branch channel 14.

[0043] The waste collecting mechanism 3 is a square plastic plate with a certain thickness, which has an upper surface, a lower surface and four side surfaces, wherein the first main channel 5, the second main channel 6 and the third main channel 7 are all extended along the upper surface, and a part of the structure of the negative pressure suction mechanism is arranged on one of the side surfaces, and four first vents 24 are arranged on the other side surface opposite to each other. The number of the first vents 24 is related to the number and position of the second type of waste formed by stamping. According to the number of the second type of waste formed by one stamping at different positions (the first main channel 5, the second main channel 6 and the third main channel 7), four first vents 24 are arranged in the first vents 24. A first air vent 24 is provided at one end of a main channel 5 where a negative pressure suction mechanism is not provided, a first air vent 24 is provided at one end of a second main channel 6 where a negative pressure suction mechanism is not provided, and two first air vents 24 are provided at one end of a third main channel 7 where a negative pressure suction mechanism is not provided, thereby realizing the connection between the first main channel 5, the second main channel 6, and the third main channel 7 and the external air; the first air vent 24 is provided on the opposite side of the negative pressure suction mechanism, and during the suction process, external air enters, which can push the second type of waste in the main channel 4 to the opposite side, so as to further realize the suction of small-sized materials.

[0044] One end of the branch channel 14 is connected to the third main channel 7, and the other blind end is connected to the outside air through the second air vent 13 provided on the side of the waste collection mechanism 3. The external air flow enters through the second air vent 13 to further push the second type of waste toward the negative pressure suction mechanism, which facilitates the smooth progress of the suction process. At the same time, the nearby second type of waste is transported to the third main channel 7 through the branch channel 14, thereby realizing the suction of the second type of waste at a nearby position.

[0045] The diameter of the vent 8 is 2-8 mm, preferably 5 mm, to achieve optimal gas flow, which is conducive to the suction of the second type of waste and prevents the second type of waste from being adsorbed in the channel under a negative pressure environment; the distance between the vent 8 and the upper surface of the waste collecting mechanism 3 is 8-12 mm, and the vent 8 is arranged close to the upper surface of the waste collecting mechanism 3 to prevent the generation of vortices after air enters, thereby avoiding the second type of waste from being carried away or causing blockage.

[0046] The inner bottom surface and inner side surface of the channel are provided with a wear-resistant substrate, and the wear-resistant substrate is provided with a concave-convex pattern to prevent the adsorption of the second type of waste and facilitate the suction of the second type of waste. The waste collection mechanism 3 is a PE plastic plate. The second type of waste will cause wear to the waste collection mechanism 3 due to continuous friction with the channel during the suction process. Moreover, small-sized waste is easy to adhere to the channel. The wear-resistant substrate with a concave-convex pattern is provided on the inner bottom surface and inner side surface of the channel to protect the waste collection mechanism 3, reduce its wear, and also reduce friction. Moreover, the setting of the concave-convex pattern allows the air entering through the vent 8 to flow between the second type of waste and the wear-resistant substrate, avoiding the second type of waste from adhering to the channel and causing blockage, which is conducive to the timely suction of the second type of waste.

[0047] The concave-convex pattern is preferably an elliptical concave-convex pattern, the depth of which is smaller than the thickness of the second type of waste, and the inner diameter of a single elliptical concave-convex pattern is smaller than the outer diameter of the second type of waste, so as to prevent the second type of waste from being embedded in the elliptical concave-convex pattern.

[0048] Metal sensors 18 are respectively provided at both ends of the first main channel 5, the second main channel 6 and the third main channel 7. The metal sensors 18 are metal proximity switches used to monitor whether there is metal (second type of waste) residue in the main channel 4. Wear-resistant glass is provided on the metal sensors 18 to prevent the second type of waste from damaging the metal sensors 18. Before performing the stamping action, if the metal sensor 18 senses that there is metal in the channel, a warning message and / or a stamping stop message is issued to the outside.

[0049] The negative pressure suction mechanism includes a vacuum pump, a connecting pipe and a connecting head 19 connected in sequence, and the connecting head 19 includes a first connecting head 1 and a second connecting head 2. One end of the first connecting head 1 is connected to the first main channel 5, and one end of the second connecting head 2 is connected to the second main channel 6 and the third main channel 7. The other ends of the first connecting head 1 and the second connecting head 2 are connected to the vacuum pump through a connecting pipe to achieve negative pressure suction. The inner diameters of the connecting pipe, the first connecting head 1 and the second connecting head 2 are adapted to the second type of waste, so as to avoid waste of materials caused by excessive inner diameter size, and waste of energy caused by increased suction due to increased size, and also to avoid waste of waste due to too small inner diameter size.

[0050] The waste cleaning device provided by the present invention is applied to the bottom of the engine sealing gasket punching machine, and the waste cleaning device can correspond to 1-3 workstations. The stamping die punches the steel to form the sealing gasket 23. The first type of waste falls to the bottom through the circular through holes 10, the bar through holes 11 and the special-shaped through holes 12 provided on the waste collecting mechanism 3, and the second type of waste is sucked away, so as to realize the cleaning of the waste and avoid the subsequent waste generation caused by the waste jumping up. The scrap rate before the improvement is 30-50 pieces of scrap on average per day. After the improvement, basically no scrap is generated in the daily production process, the scrap rate is greatly reduced, the production efficiency is improved, the production cost is reduced, the loss of raw materials is reduced, and the service life of the mold is greatly improved.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A waste cleaning device for a punching machine, characterized in that: The waste collecting mechanism (3) comprises a plurality of through holes (9) and a channel, the size of the through holes (9) corresponds to the large-size stamping area on the stamping die, and the first type of waste formed by stamping passes through the through holes (9) and falls down, and the channel comprises an open end, a blind end and a receiving end, the receiving end corresponds to the small-size stamping area on the stamping die, and the open end is used to communicate with the negative pressure suction mechanism to suck the second type of waste formed by stamping from the receiving end and discharge it through the open end; The blind end is provided with a vent (8) for achieving communication between the channel and the outside air, so that the airflow in the channel always flows from the blind end to the open end; The inner bottom surface and / or the inner side surface of the channel are provided with a wear-resistant substrate, and the wear-resistant substrate is provided with a concave-convex pattern; The depth of the concave-convex pattern is smaller than the thickness of the second type of waste, and the size of a single concave-convex pattern is smaller than the size of the second type of waste.

2. The waste cleaning device for a punching machine according to claim 1, characterized in that: A metal sensor (18) is arranged in the channel.

3. The waste cleaning device for a punching machine according to claim 2, characterized in that: Before the punching action is performed, if the metal sensor (18) senses that there is metal in the channel, a warning message and / or a message to stop punching is sent out.

4. The waste cleaning device for a punching machine according to claim 1, characterized in that: The channel corresponds to at least two locations of the second type of waste.

5. The waste cleaning device for a punching machine according to claim 4, characterized in that: The channel comprises a main channel (4) and a branch channel (14) which are connected to each other and are used to collect the punched-out second type of waste material. The main channel (4) and the branch channel (14) are smoothly connected at a connection point close to one side of the opening end.

6. The waste cleaning device for a punching machine according to claim 5, characterized in that: The vent (8) comprises a first vent (24) and a second vent (13), wherein the first vent (24) is opened at a blind end of the main channel (4), and the second vent (13) is opened at a blind end of the branch channel (14).

7. The waste cleaning device for a punching machine according to claim 1, characterized in that: The diameter of the vent (8) is 2-8 mm, and the distance between the vent (8) and the surface of the waste collection mechanism (3) is 8-12 mm.

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