Net machine

Abstract

The utility model discloses a net machine which comprises a machine body, an upper cutting die and a material pressing plate are installed on the upper portion in the machine body, a lower cutting die is installed on the lower portion in the machine body, the upper cutting die comprises an installation base and a plurality of punches, the installation base is horizontally arranged, and the punches are vertically and evenly installed on the lower end face of the installation base. The pressing plate is mounted below the mounting seat through an elastic piece, through holes are formed in the positions, corresponding to the punches, of the pressing plate, and the punches penetrate through the corresponding through holes; according to the net machine, the material pressing plate is installed under the installation base, the punch penetrates through the through hole formed in the material pressing plate, and when a steel plate is punched, the pressing plate can press and limit the periphery of the punched area of the steel plate so as to prevent the punch from being damaged when the punch moves upwards. The friction force between the steel plates drives the steel plates to locally deform, so that the surface of a finished steel screen is smoother.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping equipment, in particular to a net machine. Background Art

[0002] The mesh machine, also known as the punching mesh machine, refers to the equipment for punching holes in materials. It is usually composed of a control mechanism, a main machine, and a feeding mechanism. Punching mesh products are extremely widely used, and their raw materials usually include steel plates, galvanized plates, etc.; taking steel plates as an example, when punching holes, the steel plates to be punched need to be pressed tightly to ensure the accuracy of the hole positions.

[0003] For example, the patent application with publication number CN209424379U discloses a high-speed steel plate punching machine, including a machine body, a conveyor frame and a limit seat. The utility model has a reasonable structural design and is very practical. When working, the second motor drives the pulley and the first flattening roller to rotate through the second driving wheel, which can not only transmit the plate to the machine body, but also flatten the plate to ensure the completion quality of the punching. The limit seat can regularly limit the plate when it passes through, ensuring the accuracy of the punching. The hydraulic cylinder can drive the cutter to cut to a fixed length. The first motor drives the large flywheel and the rotating shaft to rotate through the first driving wheel, thereby driving the eccentric wheel to rotate, thereby driving the upper slide seat to move downward along the slide rod, and punching the plate through the upper knife die, and then driving the upper slide seat to move upward through the telescopic rod, repeating the cycle. The upper knife die is quick and convenient to replace, which is convenient for adjustment to different types of plates, and the device occupies a small area and is easy to place.

[0004] The existing clamping structure is staggered with the upper cutting die, and the clamping structure has a low effect on limiting the punching position of the steel plate. When the upper cutting die drives the punch to reset (moves upward after completing a single punching), especially when the thickness of the steel plate is small, the friction between the punch and the steel plate can easily cause local deformation of the steel plate, resulting in an uneven surface of the finished steel plate mesh, affecting the use effect of the steel plate mesh and reducing its aesthetics. Utility Model Content

[0005] The utility model aims to provide a mesh machine with good limiting effect on steel plates to be processed.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A mesh machine comprises a machine body, wherein an upper cutting die and a pressing plate are installed at the upper part of the machine body, and a lower cutting die is installed at the lower part of the machine body. The upper cutting die comprises a mounting seat and a plurality of punches, wherein the mounting seat is arranged horizontally, and each punch is vertically and evenly installed on the lower end surface of the mounting seat. The pressing plate is installed below the mounting seat through an elastic member, and through holes are opened at positions corresponding to the punches on the pressing plate, and each punch passes through the corresponding through hole.

[0008] In the above-mentioned wire mesh machine, the diameter of the through hole is larger than the diameter of the punch.

[0009] In the above-mentioned wire mesh machine, the pressure plate is rectangular, and a rectangular partition is installed on the upper end surface of the pressure plate, and each through hole is located inside the rectangular partition.

[0010] In the above-mentioned wire mesh machine, an oil storage cavity is formed in the mounting seat. A supplementary oil pipe is installed at the lower part of the mounting seat. The upper end of the supplementary oil pipe is communicated with the oil storage cavity, and the lower end of the supplementary oil pipe faces the inside of the rectangular partition. An oil outlet is opened at the lower end of the supplementary oil pipe. A blocking member for blocking the oil outlet is installed at the lower end of the supplementary oil pipe. The blocking member is squeezed by the rectangular partition and moves towards the lower end surface of the mounting seat to expose the oil outlet of the supplementary oil pipe.

[0011] In the above-mentioned wire mesh machine, the supplementary oil pipe is installed between two adjacent punches, and the supplementary oil pipe is arranged vertically.

[0012] In the above-mentioned wire mesh machine, the blocking member includes a blocking plate arranged between the rectangular partition and the mounting seat. The lower end of the supplementary oil pipe penetrates through the blocking plate. A dynamic seal connection is provided between the position where the supplementary oil pipe penetrates through the blocking plate and the supplementary oil pipe. Maintaining springs for maintaining the relative position between the blocking plate and the mounting seat are sleeved outside the supplementary oil pipe.

[0013] In the above-mentioned wire mesh machine, a convex block is formed along the circumferential direction of the lower end of the supplementary oil pipe. When the lower end surface of the blocking plate contacts the convex block, the blocking plate blocks the oil outlet.

[0014] In the above-mentioned wire mesh machine, the oil outlet is obliquely opened downward along the side wall of the supplementary oil pipe, and the oil outlets are symmetrically arranged at the positions where the supplementary oil pipe faces the adjacent punches.

[0015] In the above-mentioned wire mesh machine, the punch includes a first section and a second section. Two ends of the first section are respectively connected to the mounting seat and the second section, and the diameter of the first section is smaller than the diameter of the second section.

[0016] In the above-mentioned wire mesh machine, the cross-section of the end of the second section connected to the first section is trapezoidal.

[0017] In the above technical solution, for the wire mesh machine provided by the present utility model, by installing the pressure plate directly below the mounting seat and enabling the punch to pass through the through holes opened on the pressure plate, when stamping the steel plate, the pressure plate can tightly limit the periphery of the stamping area of the steel plate to prevent the friction force between the punch and the steel plate from driving local deformation of the steel plate when the punch moves upward, making the surface of the finished product of the steel wire mesh smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of the stamping state of the net machine provided by the embodiment of the present utility model;

[0020] Figure 2 Partial cross-sectional view of the mounting seat and the pressure plate provided by the embodiment of the present utility model;

[0021] Figure 3 Provided by the embodiment of the present utility model Figure 2 Enlarged schematic view at position A in

[0022] Figure 4 Enlarged schematic view of the punch provided by the embodiment of the present utility model.

[0023] Explanation of reference numerals:

[0024] 1. Machine body; 2. Upper die; 21. Mounting seat; 211. First connecting block; 212. Second connecting block; 213. Limiting rod; 214. Limiting spring; 22. Punch; 221. First section; 222. Second section; 23. Oil storage cavity; 24. Oil replenishing pipe; 241. Oil outlet; 242. Convex block; 3. Lower die; 4. Pressure plate; 41. Through hole; 42. Rectangular partition; 5. Sealing plate; 51. Sustaining spring. Detailed implementation manners

[0025] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings.

[0026] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] As Figures 1 - 4As shown in the figure, a net machine provided by an embodiment of the present utility model includes a machine body 1. An upper die 2 and a pressure plate 4 are installed in the upper part of the machine body 1, and a lower die 3 is installed in the lower part of the machine body 1. The upper die 2 includes a mounting seat 21 and a plurality of punching heads 22. The mounting seat 21 is horizontally arranged, and each punching head 22 is vertically and evenly installed on the lower end surface of the mounting seat 21. The pressure plate 4 is installed below the mounting seat 21 through an elastic member, and through holes 41 corresponding to the punching heads 22 are formed in the pressure plate 4, and each punching head 22 passes through the corresponding through hole 41.

[0028] Specifically, the machine body 1 is the main structure of the net machine. A through feeding channel is provided in the machine body 1. As Figure 1 shown, the channel penetrates completely from the front side to the rear side of the machine body 1. A steel plate conveying device (not shown in the figure) and a lower die 3 are provided at the bottom of the feeding channel. The conveying surface of the conveying device is flush with the upper end surface of the lower die 3. The conveying device is used to convey the steel plate to the lower die 3. Among them, the conveying device is a prior art and can be directly applied without further description. The lower die 3 is a supporting structure during the stamping of the steel plate. Vertical small holes are formed at positions corresponding to the punching heads 22 to facilitate the downward discharge of part of the waste material cut off by the punching heads 22. The pressure plate 4 is installed below the mounting seat 21 through an elastic member. Preferably, four groups of elastic members are provided, and the four groups of elastic members are distributed in a rectangular array on the outer periphery of the pressure plate 4. Each elastic member includes a first connecting block 211 fixed to the side surface of the mounting seat 21 and a second connecting block 212 fixed to the side surface of the pressure plate 4. A limiting rod 213 is fixed to the second connecting block 212. The upper end of the limiting rod 213 penetrates through the first connecting block 211 and a blocking block is formed along its circumferential direction. A limiting spring 214 is sleeved on the part of the limiting rod 213 between the first connecting block 211 and the second connecting block 212.

[0029] A driving member is further provided in the upper part of the machine body 1. The driving member can adopt an existing linear driving mechanism such as a hydraulic cylinder. The output end of the hydraulic cylinder is connected to the mounting seat 21. During stamping, the mounting seat 21 is driven by the hydraulic cylinder to move downward, and drives the pressure plate 4 to move synchronously. The pressure plate 4 contacts the steel plate and presses the steel plate on the lower die 3. During this process, the punching head 22 moves along the axial direction of its corresponding through hole 41 until it extends out from the lower end in the Figure 2 figure shown and contacts the upper surface of the steel plate. As the mounting seat 21 continues to move downward, the punching head 22 presses the part of the steel plate corresponding to the small hole and presses this part of the steel into the small hole to achieve punching.

[0030] The screen machine provided by the present utility model installs the pressure plate 4 directly below the mounting seat 21, and enables the punch 22 to pass through the through hole 41 opened on the pressure plate 4. When stamping the steel plate, the pressure plate can press and limit the periphery of the stamping area of the steel plate, so as to prevent the local deformation of the steel plate driven by the frictional force between the punch 22 and the steel plate when the punch 22 moves upward, making the surface of the finished steel mesh more flat.

[0031] Further, the diameter of the through hole 41 is larger than the diameter of the punch 22.

[0032] Specifically, to avoid the friction between the pressure plate 4 and the punch 22, resulting in unnecessary power loss and wear of the punch 22, in specific implementation, the diameter of the through hole 41 can be made larger than the diameter of the punch 22.

[0033] In another embodiment proposed by the present utility model, the pressure plate 4 is rectangular, and a rectangular partition 42 is installed on the upper end surface of the pressure plate 4, and each through hole 41 is located inside the rectangular partition 42.

[0034] Specifically, since the production of the steel mesh is usually continuous, the punch 22 will heat up due to friction when continuously punching the steel plate. When the material of the steel plate is sensitive to temperature, problems such as softening and deformation are likely to occur at high temperatures. In this embodiment, by installing a rectangular partition 42 above the pressure plate 4 to form an oil storage space, during the stamping process, the cooling oil can be injected into the rectangular partition 42, and the oil slowly flows downward through the gap between the through hole 41 and the punch 22, taking away the heat on the punch 22.

[0035] Further, an oil storage cavity 23 is formed in the mounting seat 21, a replenishing oil pipe 24 is installed at the lower part of the mounting seat 21, the upper end of the replenishing oil pipe 24 communicates with the oil storage cavity 23, and the lower end of the replenishing oil pipe 24 faces the inside of the rectangular partition 42. An oil outlet 241 is opened at the lower end of the replenishing oil pipe 24, and a plugging member for blocking the oil outlet 241 is installed at the lower end of the replenishing oil pipe 24. The plugging member moves toward the lower end surface of the mounting seat 21 under the extrusion of the rectangular partition 42 to expose the oil outlet 241 of the replenishing oil pipe 24.

[0036] The replenishing oil pipe 24 is installed between two adjacent punches 22, and the replenishing oil pipe 24 is vertically arranged.

[0037] The plugging member includes a plugging plate 5 arranged between the rectangular partition 42 and the mounting seat 21. The lower end of the replenishing oil pipe 24 penetrates through the plugging plate 5. The position where the replenishing oil pipe 24 penetrates through the plugging plate 5 is in dynamic sealing connection with the replenishing oil pipe 24. A maintaining spring 51 for maintaining the relative position between the plugging plate 5 and the mounting seat 21 is sleeved outside the replenishing oil pipe 24.

[0038] Specifically, in the above embodiment, since the filling position of the oil fluid is fixed, when a small amount of oil fluid is filled, it is difficult for the oil fluid to reach the through holes 41 that are far from the filling position. However, setting the upper part of the rectangular partition 42 to be closed will affect the heat dissipation of the punch 22 to the outside through the air, resulting in a reduction in the natural heat dissipation effect of the punch 22. Therefore, in this embodiment, as Figure 2 and Figure 3 shown, an oil storage cavity 23 is provided in the mounting base 21, the oil fluid is stored in the oil storage cavity 23, and a plurality of vertically arranged oil supply pipes 24 are installed at the lower part of the mounting base 21. The oil fluid can flow into the rectangular partition 42 through the oil supply pipes 24, and a sealing plate 5 is installed at the lower end of the oil supply pipe 24. By using the change in the distance between the blank holder 4 and the mounting base 21 during the stamping process, the position of the sealing plate 5 is adjusted, so as to intermittently supplement the oil fluid to the inner side of the rectangular partition 42. Preferably, the oil supply pipes 24 are uniformly arranged at the lower part of the mounting base 21. As Figure 2 shown, a group of oil supply pipes 24 are arranged between adjacent punches 22 to achieve multi-point simultaneous oil supply, so that oil fluid can flow into each through hole 41, and each punch 22 can be cooled by the oil fluid.

[0039] During specific implementation, in order to prevent the holding spring 51 from being damaged due to excessive extrusion, a plurality of cylindrical cavities are provided at the lower part of the mounting base 21, and the holding spring 51 is arranged in the corresponding cylindrical cavities. When the sealing plate 5 is squeezed by the rectangular partition 42 until it contacts the lower end face of the mounting base 21, the holding spring 51 will contract into the cylindrical cavity and will not fail due to excessive extrusion. In this embodiment, in order to limit the position of the sealing plate 5, the upper end of the holding spring 51 is fixedly connected to the mounting base 21, and its lower end is fixedly connected to the upper end face of the sealing plate 5, that is, the holding spring 51 hangs the sealing plate 5 below the mounting base 21.

[0040] Further, a convex block 242 is formed along the circumferential direction of the lower end of the oil supply pipe 24. When the lower end face of the sealing plate 5 contacts the convex block 242, the sealing plate 5 blocks the oil outlet 241.

[0041] Specifically, in the above embodiment, the sealing plate 5 is hung below the mounting base 21 by the holding spring 51, and its height will change due to the fatigue of the holding spring 51 under force, that is, the height of the sealing plate 5 will deviate upward or downward, which is not conducive to the sealing plate 5 blocking the oil outlet 241 on the oil supply pipe 24. In this embodiment, by forming a convex block 242 along the circumferential direction of the lower end of the oil supply pipe 24, the elastic force of the holding spring 51 squeezes the sealing plate 5 against the convex block 242 to ensure the constant position of the sealing plate 5 when blocking the oil outlet 241.

[0042] Furthermore, the oil outlet 241 is inclined downward along the side wall of the oil supply pipe 24, and the oil outlets 241 are symmetrically arranged at the positions where the oil supply pipe 24 faces the adjacent punches 22.

[0043] Specifically, as Figure 3 shown, to enable the oil in the oil outlet 241 to flow into the through holes 41 corresponding to two adjacent punches 22 as much as possible, the oil outlet 241 is inclined downward and opened towards the adjacent through hole 41, so that the oil can directly flow from the oil outlet 241 to the through hole 41.

[0044] In another embodiment proposed by the present utility model, the punch 22 includes a first section 221 and a second section 222. The two ends of the first section 221 are respectively connected to the mounting seat 21 and the second section 222, and the diameter of the first section 221 is smaller than that of the second section 222.

[0045] The cross-section of the end of the second section 222 connected to the first section 221 is trapezoidal.

[0046] Specifically, since the diameter of the small hole on the lower die 3 is the diameter of the hole punched on the steel plate, as a result, after the punch 22 moves into the lower die 3, the cooling oil cannot flow into the lower die 3 to cool down the lower die 3. In this embodiment, the punch 22 includes a first section 221 and a second section 222 with different diameters. Among them, the lower end of the second section 222 directly contacts the steel plate for punching. During the stamping process, the second section 222 first enters the small hole of the lower die 3. As the punch 22 continues to move downward, its first section 221 can also enter the small hole of the lower die 3. At this time, there is a gap between the outer wall of the first section 221 and the inner wall of the small hole on the lower die 3, and part of the oil enters the small hole on the lower die 3 to cool down the lower die 3. During specific implementation, the second section 222 can completely pass through the small hole, that is, the second section 222 can move below the lower die 3, so that the oil can flow through the small hole to below the lower die 3.

[0047] Only some exemplary embodiments of the present utility model have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present utility model, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present utility model.

Claims

1. A net machine, comprising a machine body, an upper cutter die and a pressure plate are installed in the upper part of the machine body, a lower cutter die is installed in the lower part of the machine body, the upper cutter die includes a mounting seat and a plurality of punching heads, the mounting seat is horizontally arranged, and each punching head is vertically and uniformly installed on the lower end surface of the mounting seat, characterized in that, The pressure plate is installed below the mounting base through elastic members, and through holes are provided at positions corresponding to the punches on the pressure plate, and each punch passes through the corresponding through hole.

2. The net machine according to claim 1, characterized in that, The diameter of the through hole is larger than the diameter of the punch.

3. A net machine according to claim 2, characterized in that, The pressure plate is rectangular, and a rectangular partition is installed on the upper end surface of the pressure plate, and each through hole is located inside the rectangular partition.

4. A net machine according to claim 3, characterized in that, An oil storage cavity is formed in the mounting base, a refueling pipe is installed at the lower part of the mounting base, the upper end of the refueling pipe is communicated with the oil storage cavity, and the lower end of the refueling pipe faces the inside of the rectangular partition. An oil outlet is provided at the lower end of the refueling pipe, and a blocking member for blocking the oil outlet is installed at the lower end of the refueling pipe. The blocking member is pushed by the rectangular partition to move towards the lower end surface of the mounting base to expose the oil outlet of the refueling pipe.

5. A net machine according to claim 4, characterized in that, The refueling pipe is installed between two adjacent punches and is arranged vertically.

6. A net machine according to claim 4, characterized in that, The blocking member includes a blocking plate arranged between the rectangular partition and the mounting base. The lower end of the refueling pipe penetrates through the blocking plate. A dynamic seal connection is provided between the position where the refueling pipe penetrates through the blocking plate and the refueling pipe. Maintaining springs for maintaining the relative position between the blocking plate and the mounting base are sleeved outside the refueling pipe.

7. A net machine according to claim 6, characterized in that, A convex block is formed along the circumferential direction of the lower end of the refueling pipe. When the lower end surface of the blocking plate contacts the convex block, the blocking plate blocks the oil outlet.

8. A net machine according to claim 5, characterized in that, The oil outlet is inclined downward along the side wall of the refueling pipe, and the oil outlets are symmetrically arranged at positions where the refueling pipe faces adjacent punches.

9. A net machine according to claim 5 or 6, characterized in that The punch includes a first section and a second section. The two ends of the first section are respectively connected to the mounting base and the second section, and the diameter of the first section is smaller than the diameter of the second section.

10. A net machine according to claim 9, characterized in that, The cross-section of the end of the second section connected to the first section is trapezoidal.

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