A die-set adjusting mechanism for a high-speed punching machine

Abstract

The present invention discloses a die-adjusting mechanism for a high-speed punching press, which relates to the technical field of network security protection equipment. It includes a punching press frame, a punching crank, a punching slider, a punching base, and a die-adjusting mechanism. The punching crank is arranged at the top of the punching press frame, the punching base is arranged in the punching press frame and at the bottom of the punching press frame, the punching slider is drivingly connected to the bottom of the punching crank and is directly above the punching base, and the die-adjusting mechanism is arranged on the bottom side of the punching slider. In the present invention, the punching slider is driven by the punching crank to move up and down, and the punching process is formed by the mutual pressing of the punching slider and the punching base. The height of the punching slider can be adjusted by the provided die-adjusting mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of network security protection equipment, and in particular to a high-speed punch press die adjustment mechanism. Background Art

[0002] The high-speed punch press is made of an integrated special cast iron alloy with high rigidity and shock resistance. The slider is designed with a long guide and equipped with a slider balance device to ensure precise and stable operation. All anti-wear components are equipped with an electronic timed automatic lubrication system. If there is a lack of lubricating oil, the punch press will stop automatically. The advanced and simple control system ensures the accuracy of the slider's operation and stopping. It can be matched with any automated production needs to improve production efficiency and reduce costs.

[0003] In the prior art, the mold adjustment assembly of the traditional structure is arranged inside the head seat, the worm drives the worm gear to rotate, the worm gear drives the adjustment screw to rotate, the threaded pair between the adjustment screw and the guide column is connected, the slider is moved up and down to achieve mold adjustment, and when it is adjusted to the required height, high-pressure oil is introduced into the oil chamber between the piston and the guide column to tighten the gap between the threaded pairs.

[0004] The common mold adjustment mechanism in the prior art has a complex structure, cumbersome mold adjustment steps and large errors when in use, which reduces the stamping accuracy of the high-speed punch press and increases the wear of the equipment. Summary of the invention

[0005] The invention provides a high-speed punch press die adjusting mechanism to solve the technical problems of large volume, complex structure and low die adjusting precision of the die adjusting mechanism in the high-speed punch press in the prior art.

[0006] A high-speed punch press die adjustment mechanism comprises a punch press frame, a punch crank, a punch slide, a punch base and a die adjustment mechanism, wherein the punch crank is arranged on the top of the punch press frame, the punch base is arranged in the punch press frame and is located at the bottom of the punch press frame, the punch slide is transmission-connected to the bottom of the punch crank and is located directly above the punch base, and the die adjustment mechanism is arranged on the bottom side of the punch slide.

[0007] Furthermore, the die adjustment mechanism consists of slider guide columns, adjustment screws, sprockets, bushings, a die adjustment motor, and a chain. There are four slider guide columns, and the four slider guide columns are respectively fixedly connected to the four corners of the stamping slider. There are four adjustment screws, and the four adjustment screws are respectively arranged at the bottoms of the four slider guide columns. The top of the adjustment screw is provided with an external thread, and the bottom of the slider guide column is provided with an internal thread corresponding to the external thread on the adjustment screw. The external thread on the adjustment screw corresponds to the internal thread at the bottom of the slider guide column. The bushing is arranged at the bottom of the adjustment screw, and the four sprockets are respectively installed on the bushings at the bottoms of the four adjustment screws. A tension sleeve is arranged between the sprocket and the bushing. The die adjustment motor is in transmission connection with one adjustment screw, and the chain is respectively sleeved on the four sprockets.

[0008] Furthermore, two limit bearings are sleeved on the bushing, and the limit bearings are located on the upper and lower sides of the sprocket.

[0009] Furthermore, a limit plug is arranged at the top of the adjustment screw, and a limit slot is arranged at the bottom of the slider guide column. The limit plug is located in the limit slot.

[0010] Furthermore, an exhaust hole is arranged in the middle of the slider guide column. One end of the exhaust hole communicates with the limit slot, and the other end of the exhaust hole penetrates the entire slider guide column.

[0011] Furthermore, two tension wheels are arranged on both sides of the chain. The tension wheels are installed on the punching press frame and mesh with the chain.

[0012] Furthermore, a pressure regulating oil cylinder is arranged at the top of the stamping slider. The output end of the stamping crank communicates with the pressure regulating oil cylinder. The pressure regulating oil cylinder consists of an oil cylinder shell, a piston, an upper oil cylinder cover, and a lower oil cylinder cover. The upper oil cylinder cover and the lower oil cylinder cover are respectively fixedly installed on the upper and lower sides of the oil cylinder shell. Check valves are arranged in both the upper oil cylinder cover and the lower oil cylinder cover. The piston is arranged inside the oil cylinder shell. The output end of the stamping crank is movably connected to the piston. The piston divides the inside of the oil cylinder shell into an upper oil cavity and a lower oil cavity, and hydraulic oil is injected into both the upper oil cavity and the lower oil cavity.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] First, in the present invention, the mold adjustment mechanism is changed to the lower part of the slider guide column, the space for placing the worm gear in the original head seat can be eliminated, the head seat can be lowered, the adjustment screw is threadedly connected to the slider guide column, a double key is set at the lower part of the adjustment screw, the sleeve and the sprocket are connected and fixed by a tensioning sleeve (it can also be locked and fixed by screws), the mold adjustment motor is placed at the lower end of one foot sleeve, and the encoder can be arranged at a place in the other triangles. The four feet have the same structure, the sprockets are synchronously driven by chains, and tensioning sprockets are arranged on both sides. The adjustment screw is connected to the sleeve key, and when it rotates, it drives the adjustment screw to rotate, driving the slider to move up and down, and stops when it is adjusted to the required mold height. When the stamping slide is stamped, the key can slide in the visible groove, thereby effectively solving the technical problems of large size, complex structure and low mold adjustment accuracy of the mold adjustment mechanism in the high-speed punch press in the prior art.

[0015] Secondly, the present invention provides an exhaust hole in the middle of the slider guide column, and the exhaust hole can connect the inside of the limit slot with the external air, so that the adjustment screw can discharge the excess gas inside the limit slot during the mold adjustment process, thereby preventing the air pressure inside the limit slot from being unable to be discharged in time, thereby reducing the adjustment accuracy of the adjustment screw.

[0016] Thirdly, the present invention has two tensioning wheels on both sides of the chain, which are installed on the punch frame and mesh with the chain. The two tensioning wheels push the two sides of the chain inward, so that the chain can be more tightly clamped with the four sprockets, thereby increasing the mold adjustment stability of the mold adjustment mechanism in the present invention.

[0017] Fourthly, the present invention provides a pressure-regulating oil cylinder on the top of the pressing slide. When the mold adjusting mechanism performs the mold adjusting operation, it will push the stamping slide to move upward. At this time, the stamping crank is in a stationary state and the cylinder shell moves upward, so the piston is in a stationary state. The check valve at the lower oil chamber is opened to discharge the hydraulic oil in the lower oil chamber through the check valve, and the hydraulic oil in the upper oil chamber is supplemented through the check valve. After the adjustment is completed, the oil circuit is checked, thereby realizing a high-pressure oil pad.

[0018] Fifthly, the pressure regulating oil cylinder in the present invention has two functions, namely, it has the functions of a high pressure oil cylinder and a guide column, thereby reducing the overall structure of the equipment and reducing the manufacturing cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1Schematic diagram of the overall structure of the present invention;

[0021] Figure 2 Schematic diagram of the connection state between the stamping crank and the stamping slider in the present invention;

[0022] Figure 3 Schematic diagram of the connection state between the stamping slider and the die-adjusting mechanism in the present invention;

[0023] Figure 4 Schematic diagram of the sectional structure of the die-adjusting mechanism in the present invention;

[0024] Figure 5 Schematic diagram of the sectional structure of the pressure-regulating oil cylinder in the present invention;

[0025] Reference numerals: punching press frame 1, stamping crank 2, stamping slider 3, pressure-regulating oil cylinder 31, oil cylinder housing 311, upper oil cavity 3111, lower oil cavity 3112, piston 312, upper oil cylinder cover 313, lower oil cylinder cover 314, stamping base 4, die-adjusting mechanism 5, slider guide post 51, limit slot 511, exhaust hole 512, adjusting screw 52, limit plug-in 521, sprocket 53, bushing 54, tension sleeve 541, limit bearing 542, die-adjusting motor 55, chain 56, tension pulley 567. Detailed implementation manners

[0026] Next, the technical solution of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Generally, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention.

[0028] Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention 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 cannot be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] A die adjustment mechanism for a high-speed punching machine, comprising a punching machine frame 1, a punching crank 2, a punching slider 3, a punching base 4, and a die adjustment mechanism 5. The punching crank 2 is arranged at the top of the punching machine frame 1, the punching base 4 is arranged in the punching machine frame 1 and at the bottom of the punching machine frame 1. The punching slider 3 is drivingly connected to the bottom of the punching crank 2 and is directly above the punching base 4. The punching slider 3 is driven by the punching crank 2 to move up and down, and the punching slider 3 and the punching base 4 are pressed against each other to form a punching process. The die adjustment mechanism 5 is arranged on the bottom side of the punching slider 3, and the height of the punching slider 3 can be adjusted by the provided die adjustment mechanism 5.

[0032] Preferably, the die-adjusting mechanism 5 is composed of a slider guide post 51, an adjusting screw 52, a sprocket 53, a bushing 54, a die-adjusting motor 55 and a chain 56. There are four slider guide posts 51, and the four slider guide posts 51 are respectively fixedly connected to the four corners of the stamping slider 3. There are four adjusting screws 52, and the four adjusting screws 52 are respectively arranged at the bottoms of the four slider guide posts 51. The top of the adjusting screw 52 is provided with an external thread, and the bottom of the slider guide post 51 is provided with an internal thread corresponding to the external thread on the adjusting screw 52. The external thread on the adjusting screw 52 corresponds to the internal thread at the bottom of the slider guide post 51. The bushing 54 is arranged at the bottom of the adjusting screw 52, and the bushing 54 can limit the adjusting screw 52. There are four sprockets 53, and the four sprockets 53 are respectively installed on the bushings 54 at the bottoms of the four adjusting screws 52. A tension sleeve 541 is arranged between the sprocket 53 and the bushing 54, and the four sprockets 53 can be respectively fixed on the four bushings 54 through the arranged tension sleeve 541. The die-adjusting motor 55 is in driving connection with one adjusting screw 52, and the single adjusting screw 52 is driven to rotate by the die-adjusting motor 55. The chain 56 is respectively sleeved on the four sprockets 53. When the die-adjusting motor 55 operates, it drives the single adjusting screw 52 to rotate, and makes the sprocket 53 fixedly connected to the adjusting screw 52 rotate synchronously. Then, the four sprockets 53 are driven to rotate synchronously through the chain 56, so that each adjusting screw 52 rotates synchronously. By utilizing the mutual cooperation between the adjusting screw 52 and the internal thread of the slider guide post 51, the four slider guide posts 51 are synchronously driven up and down, and then the overall stamping slider 3 is driven to rise and fall through the synchronous rise and fall of the four slider guide posts 51, thereby realizing the die-adjusting operation of the stamping slider 3.

[0033] Preferably, two limiting bearings 542 are sleeved on the bushing 54, and the limiting bearings 542 are located on the upper and lower sides of the sprocket 53. The arranged limiting bearings 542 can increase the flexibility of the bushing 54 during the rotation process.

[0034] Preferably, a limiting plug-in 521 is arranged at the top of the adjusting screw 52, and a limiting slot 511 is arranged at the bottom of the slider guide post 51. The limiting plug-in 521 is located in the limiting slot 511. The moving position of the adjusting screw 52 can be limited through the mutual cooperation between the limiting plug-in 521 and the limiting slot 511, thereby preventing the position deviation of the slider guide post 51 during the sliding process from reducing the stamping accuracy of the stamping slider 3.

[0035] Preferably, an exhaust hole 512 is provided in the middle of the slider guide post 51. One end of the exhaust hole 512 communicates with the limit slot 511, and the other end of the exhaust hole 512 penetrates through the entire slider guide post 51. By providing the exhaust hole 512, the inside and outside air of the limit slot 511 can be communicated, so that the excess gas inside the limit slot 511 can be discharged during the die adjustment process of the adjustment screw 52, preventing the adjustment accuracy of the adjustment screw 52 from being reduced due to the failure to discharge the air pressure inside the limit slot 511 in time.

[0036] Preferably, two tension wheels 567 are provided on both sides of the chain 56. The tension wheels 567 are installed on the punching machine frame 1 and mesh with the chain 56. By providing the two tension wheels 567, both sides of the chain 56 are pushed inward, so that the chain 56 can be more tightly clamped with the four sprockets 53, thereby increasing the die adjustment stability of the die adjustment mechanism 5 in the present invention.

[0037] Preferably, a pressure regulating oil cylinder 31 is provided on the top of the stamping slider 3. The output end of the stamping crank 2 communicates with the pressure regulating oil cylinder 31. The pressure regulating oil cylinder 31 is composed of an oil cylinder shell 311, a piston 312, an upper oil cylinder cover 313 and a lower oil cylinder cover 314. The upper oil cylinder cover 313 and the lower oil cylinder cover 314 are respectively fixedly installed on the upper and lower sides of the oil cylinder shell 311. The oil cylinder shell 311 is closed by the upper oil cylinder cover 313 and the lower oil cylinder cover 314. Check valves are provided in both the upper oil cylinder cover 313 and the lower oil cylinder cover 314. The piston 312 is arranged inside the oil cylinder shell 311. The output end of the stamping crank 2 is movably connected to the piston 312. The piston 312 divides the inside of the oil cylinder shell 311 into an upper oil cavity 3111 and a lower oil cavity 3112. Hydraulic oil is injected into both the upper oil cavity 3111 and the lower oil cavity 3112. When the die adjustment mechanism 5 performs die adjustment operations, the stamping slider 3 will be pushed upward. At this time, the stamping crank 2 is stationary while the oil cylinder shell 311 moves upward. Therefore, the piston 312 is stationary. The check valve at the lower oil cavity 3112 is opened to discharge the hydraulic oil in the lower oil cavity 3112 through the check valve, and the hydraulic oil in the upper oil cavity 3111 is replenished through the check valve. After the adjustment is completed, the oil circuit is stopped against reverse flow, thereby realizing a high-pressure oil pad.

[0038] When the present invention is in use, the tension sleeve 541 is provided to enable the four sprocket wheels 53 to be fixed on the four shaft sleeves 54 respectively, the mold adjustment motor 55 is in transmission connection with an adjustment screw 52, and the mold adjustment motor 55 drives a single adjustment screw 52 to rotate, and the chain 56 is respectively sleeved on the four sprocket wheels 53, when the mold adjustment motor 55 is running, it drives the single adjustment screw 52 to rotate, and makes the sprocket wheel 53 fixedly connected to the adjustment screw 52 rotate synchronously, and then drives the four sprocket wheels 53 to rotate synchronously through the chain 56, so that each adjustment screw 52 is rotated. The four slider guide pillars 51 are driven up and down synchronously by the mutual cooperation of the adjusting screw 52 and the internal thread of the slider guide pillar 51, and then the whole stamping slide 3 is driven to rise and fall by the synchronous rise and fall of the four slider guide pillars 51. In the process of rising or falling of the stamping slide 3, the hydraulic oil in the upper oil chamber 3111 and the lower oil chamber 3112 on the upper and lower sides of the piston 312 is replenished and discharged accordingly. After the adjustment is completed, the oil circuit is non-returnable, thereby realizing a high-pressure oil pad, so that the pressure regulating cylinder 31 can serve two purposes, having the functions of a high-pressure cylinder and a guide pillar.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A die-set adjusting mechanism for a high-speed punching machine, comprising a punching machine frame (1), a punching crank (2), a punching slider (3), and a punching base (4), characterized in that, It further includes a die-adjusting mechanism (5). The stamping crank (2) is arranged on the top of the punch frame (1), the stamping base (4) is arranged in the punch frame (1) and at the bottom of the punch frame (1), the stamping slider (3) is drivingly connected to the bottom of the stamping crank (2) and is directly above the stamping base (4), and the die-adjusting mechanism (5) is arranged on the bottom side of the stamping slider (3). The die-adjusting mechanism (5) consists of a slider guide post (51), an adjusting screw (52), a sprocket (53), a bushing (54), a die-adjusting motor (55) and a chain (56). There are four slider guide posts (51), and the four slider guide posts (51) are respectively fixedly connected to the four corners of the stamping slider (3). There are four adjusting screws (52), and the four adjusting screws (52) are respectively arranged at the bottoms of the four slider guide posts (51). The top of the adjusting screw (52) is provided with an external thread, and the bottom of the slider guide post (51) is provided with an internal thread corresponding to the external thread on the adjusting screw (52). The external thread on the adjusting screw (52) corresponds to the internal thread at the bottom of the slider guide post (51). The bushing (54) is arranged at the bottom of the adjusting screw (52), and the four sprockets (53) are respectively installed on the bushings (54) at the bottoms of the four adjusting screws (52). A tension sleeve (541) is arranged between the sprocket (53) and the bushing (54). The die-adjusting motor (55) is drivingly connected to one adjusting screw (52), and the chain (56) is respectively sleeved on the four sprockets (53). A limit plug-in (521) is arranged at the top of the adjusting screw (52), and a limit slot (511) is arranged at the bottom of the slider guide post (51). The limit plug-in (521) is located in the limit slot (511). An exhaust hole (512) is arranged in the middle of the slider guide post (51). One end of the exhaust hole (512) communicates with the limit slot (511), and the other end of the exhaust hole (512) penetrates through the entire slider guide post (51). A pressure-regulating oil cylinder (31) is arranged on the top of the stamping slider (3). The output end of the stamping crank (2) communicates with the pressure-regulating oil cylinder (31). The pressure-regulating oil cylinder (31) consists of an oil cylinder shell (311), a piston (312), an oil cylinder upper cover (313) and an oil cylinder lower cover (314). The oil cylinder upper cover (313) and the oil cylinder lower cover (314) are respectively fixedly installed on the upper and lower sides of the oil cylinder shell (311). Check valves are arranged in both the oil cylinder upper cover (313) and the oil cylinder lower cover (314). The piston (312) is arranged inside the oil cylinder shell (311). The output end of the stamping crank (2) is movably connected to the piston (312). The piston (312) divides the inside of the oil cylinder shell (311) into an upper oil cavity (3111) and a lower oil cavity (3112), and hydraulic oil is injected into both the upper oil cavity (3111) and the lower oil cavity (3112).

2. The die-adjusting mechanism of a high-speed punching machine according to claim 1, wherein, Two limit bearings (542) are sleeved on the bushing (54), and the limit bearings (542) are located on the upper and lower sides of the sprocket (53).

3. The die-setting mechanism of a high-speed punching machine according to claim 1, wherein, Two tension wheels (567) are arranged on both sides of the chain (56). The tension wheels (567) are installed on the punch press frame (1) and mesh with the chain (56).

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