CN113523096A - Multi-angle arc punching die - Google Patents

Abstract

The application relates to a multi-angle arc punching die, which comprises an upper die base and a lower die base, wherein an inclined wedge is arranged on the upper die base, a sliding block is arranged on the lower die base, the outer side surface of the sliding block is matched with the inner side surface of the inclined wedge, a guide bulge is arranged on the sliding block, and a matched sliding groove is formed in the inclined wedge; a punch fixing plate is arranged on the inner side of the sliding block, a punch is installed on one side, away from the sliding block, of the punch fixing plate, the punch is in sliding connection with the punch fixing plate, a square groove is formed in the tail end of the punch, a groove matched with the square groove is formed in the punch fixing plate, a hydraulic cylinder is arranged in the groove, and an included angle is formed between the punches installed on the fixing plate; a die body is arranged at the center of the lower die holder, a concave film corresponding to the punch is arranged on the die body, an arc-shaped baffle plate with a stripping guide ring is sleeved outside the concave film, and a workpiece placing groove is arranged between the arc-shaped baffle plate and the concave film; the top surface of the lower die base is provided with guide rails matched with the slide blocks, and the bottom of each slide block corresponds to a group of parallel guide rails. This application improves the precision of punching a hole of mould, the application scope of mould and can effectual reduction in production cost.

Description

Multi-angle arc punching die

Technical Field

The application relates to the technical field of die manufacturing, in particular to a multi-angle arc punching die.

Background

The existing punching die punches product holes at multiple angles, cannot punch all holes of a workpiece once by using a conventional mode, and can generate errors of hole position degrees after multiple times of punching.

Chinese patent CN112275903A is a multi-angle side punching die for automobile frame parts, which comprises an upper die and a lower die, wherein a profiling positioning block is fixed on the lower die, and two movable side pressing blocks and a reset component are arranged on the lower die in a sliding connection manner; the upper die is provided with a profiling material pressing plate and two side cutters; the lower surface of the movable side pressing block is provided with a plurality of first hydraulic cylinders and a plurality of mounting grooves, the output end of each first hydraulic cylinder is provided with a side punching punch, and the side surface of the movable side pressing block is provided with a plurality of openings; a plurality of second hydraulic cylinders are arranged in the lower die, the first hydraulic cylinders are communicated with the cylinder bodies of the second hydraulic cylinders through oil pipes, and reset pieces are arranged on the lower die; holistic structure is succinct and very compact, and whole volume is very little when can realizing the synchronous side purpose of punching a hole of multi-angle, and the quantity of first pneumatic cylinder and respective direction of punching a hole are very easily adjusted, and do not need extra too much to change to last mould regardless of punching how many holes, and the mould suitability is extremely strong, and overall cost is also lower.

Only through the activity pressure measuring piece and the reset assembly of upper and lower mould drive both sides in current patent operation of punching a hole, can not be applicable to the demand of punching a hole in the work piece of different shapes, can not satisfy current diversified work piece demand of punching a hole, need adopt a plurality of cut-out press just can satisfy the production demand, the cost of purchasing the mould in the production is higher, consequently needs a multi-angle cut-out press that has extensive range of application urgently.

Disclosure of Invention

In order to overcome the problem that exists among the prior art, this application provides a multi-angle circular arc cut-out press.

The application provides a pair of multi-angle circular arc cut-out press adopts following technical scheme:

a multi-angle arc punching die comprises an upper die base and a lower die base, wherein a plurality of tapered wedges are arranged on the upper die base, a corresponding number of sliding blocks are arranged on the lower die base, the outer side faces of the sliding blocks are matched with the inner side faces of the tapered wedges, guide protrusions are arranged on the sliding blocks, and sliding grooves matched with the tapered wedges are formed in the tapered wedges; a punch fixing plate is arranged on the inner side of the sliding block, a plurality of punches are arranged on one side, away from the sliding block, of the punch fixing plate, the tail ends of the punches are connected with the punch fixing plate in a sliding mode, square grooves are formed in the tail ends of the punches, grooves matched with the square grooves are formed in the corresponding punch fixing plates, hydraulic cylinders matched with the square grooves in the tail ends of the punches are arranged in the grooves, and included angles are formed among the punches arranged on the same punch fixing plate; a die body is arranged at the center of the lower die holder, a concave film corresponding to the punch is arranged on the die body, an arc-shaped baffle plate with a stripping guide ring is sleeved outside the concave film, and a workpiece placing groove is formed between the arc-shaped baffle plate and the concave film; the top surface of the lower die holder is also provided with a plurality of groups of guide rails matched with the sliding block, and each group of guide rails comprises two parallel rails.

Through adopting above-mentioned technical scheme, the cut-out press of multi-angle, compare with conventional cut-out press, all there is upper die base and die holder combination to form, the difference is, the cut-out press of multi-angle installs the slide wedge on the upper die, install the slider that corresponds quantity on the bed die, and both coincide each other, realized going up the effect that the decurrent pressure of mould passes through slide wedge and slider, change into horizontal effort, the spout cooperation on direction arch and the slide wedge that is equipped with on the slider, can let the comparatively stable operation of slider, can realize comparatively accurate regulation. The punch fixing plate that the inboard of slider was provided with was equipped with is used for installing the drift to be equipped with the contained angle between the drift of installing on the punch fixing plate, can realize the function of punching a hole of multi-angle. The terminal of drift is seted up some square grooves, the recess on the drift fixed plate and is cooperated, sets up the pneumatic cylinder again between the two, through the hydraulic pressure effect, promotes the drift and acts on the drift fixed plate, behind the slide block to the position of punching a hole at the slide wedge, the drift operation of punching a hole through the effect of pneumatic cylinder. And an included angle is formed between the punches arranged on the same punch fixing plate, so that the energy can meet the requirement of multi-angle punching. The die body is installed at the center of lower membrane seat, and the die body is used for placing the work piece to fill the injecing of hole position, give up on the cowl of die body outside suit and have had the stripping to lead positive circle, can correspond the center of the hole center of drift and concave membrane, enter into the recess after punching a hole to the work piece and run through, realize the normal clear of punching a hole. The workpiece placing groove is arranged between the arc-shaped baffle and the concave film, the workpiece punched can be limited, the workpiece is damaged and popped out in the cutting process, the safety performance is improved, the guide rail mounted at the top of the lower grinding seat is used for sliding the sliding block, and each guide rail group adopts two parallel rails, so that the movement stability of the sliding block can be guaranteed.

Preferably, the guide rods are further mounted around the lower die base, the corresponding positions of the upper die base are provided with limiting through holes, the guide rods are divided into guide portions at the top and limiting portions at the bottom, and the diameter of each limiting portion is larger than that of each guide portion.

Through adopting above-mentioned technical scheme, the guide bar of installation all around of die holder can be equipped with spacing perforation with the corresponding position of upper die base, can carry out certain guide effect to the upper die base in-process of pushing down, avoids the upper die base and the position that last seat corresponds down to take place the skew, the effectual stability of guaranteeing stamping process. And the guide rod is also divided into a guide part with a small diameter and a limiting part with a large diameter, the guide part is matched with the limiting through hole, the limiting part can limit the pressing position of the upper die base, and the damage of the punching grinding tool and the failure of workpiece punching caused by the overlarge pressing degree are avoided.

Preferably, a plurality of spring grooves are further formed in one side face of the punch fixing plate for mounting the punch, rebound springs are mounted in the spring grooves, and the spring grooves are uniformly distributed in the punch fixing plate.

Through adopting above-mentioned technical scheme, the spring groove has been seted up on the side of installing the drift to the drift fixed plate, and the rebound spring of spring inslot installation can be after accomplishing to punch a hole, and the in-process that the die body was kept away from to the direction that the die body was moved back to supplementary slider, and the process that lets punch a hole is more stable.

Preferably, the slide wedge on the upper die base is detachably connected with the upper die base, the guide rail on the lower die base is also detachably connected with the lower die base, and the guide rail is close to one end of the slide wedge and is provided with a limiting bulge.

Through adopting above-mentioned technical scheme, guide rail on slide wedge on the upper die base, the die holder can dismantle with upper die base and die holder respectively and be connected, can adjust the position and the direction of punching a hole according to the demand of product to be equipped with spacing arch in the one end that the guide rail is close to the slide wedge, can carry on spacingly to gliding slider on the guide rail, avoid after the completion punches a hole, the slider breaks away from the guide rail at the in-process that returns.

Preferably, the die body in the lower die holder is fixed on the top surface of the lower die holder, the die body comprises a fixing frame, a concave film and an arc-shaped baffle plate, wherein the fixing frame and the arc-shaped baffle plate are composed of two opposite semicircular pipelines, the fixing frame is fixedly connected with the lower die holder, and the concave film is matched with the inner side wall of the fixing frame.

Through adopting above-mentioned technical scheme, the die body on the die holder is installed on the top surface of die holder, including the mount of fixed mounting in the rear side, installs the concave membrane in the mount, can be used for providing the hole that corresponds for punching a hole of work piece to cowl and mount center the concave membrane around in the middle of, the material that takes off in the cowl leads the circle and can carry out the center of drift and correspond with the hole of concave membrane. Wherein mount and lower membrane seat fixed connection, and the interior wall adaptation of surveying of concave membrane and mount, when the work piece of different models punches a hole, only need change the concave membrane to the cowl of installation adaptation can, has improved the range of application of mould greatly.

Preferably, the thickness of mount is greater than the thickness of arc baffle, and the material that takes off that is equipped with on the arc baffle leads the positive circle and corresponds with the hole body on the concave membrane.

Through adopting above-mentioned technical scheme, the thickness relative ratio cowl of mount is thick, can place the stable loop configuration of formation after the work piece at cowl, the effectual stability that punches a hole that improves to the hole body on taking off material guide ring and the concave membrane on the cowl is to drinking, and the cooperation is used, punches a hole more convenient and fast.

Preferably, the pressure plate is further installed at the top of the upper die base, the hydraulic mechanism is arranged at the top of the pressure plate, the shape of the pressure plate is the same as the top surface of the die body, and the arc-shaped plate matched with the workpiece placing groove is arranged at the bottom of the pressure plate.

Through adopting above-mentioned technical scheme, the pressure flitch is installed at the top of upper die base and can be carried out the in-process that punches a hole at the mould and press control to the mould, and the top of pressure flitch passes through the hydraulic pressure mechanism drive, presses the effect stable, presses the size and the die body adaptation of flitch to the arc with work piece standing groove adaptation is installed to the bottom of pressure flitch, can carry out effectual pressing to the work piece that the size is little, reduces the work piece and takes place to remove the possibility that produces the substandard product at the in-process that punches a hole.

Preferably, the top surface of the lower die holder is provided with a buffer layer, the buffer layer is arranged at the bottoms of the die body and the slide rail, and damping springs are densely distributed in the buffer layer.

Through adopting above-mentioned technical scheme, be equipped with the buffer layer on the top surface of die holder, the buffer layer setting is in the bottom of die body and slide rail, and the in-process of punching a hole that goes up the die holder and push down, the pressure that receives can effectively be alleviated to the buffer layer that sets up to damping spring densely covered in the bottom of die body and slide rail as the buffer layer, the quality of punching a hole of the influence work piece of the sunken local of difficult production.

Preferably, the contact surface of the wedge and the sliding block adopts a sliding groove with an equilateral triangle section, the two sides of the wedge are provided with limiting sliding rods, the two side surfaces of the sliding block are provided with groove bodies matched with the limiting sliding rods, and the top inlet of each groove body is provided with an opening of the limiting sliding rod.

Through adopting above-mentioned technical scheme, the spout tangent plane on the contact surface of slide wedge and slider is equilateral triangle, can possess sufficient stability at the in-process of connecting, the spacing slide bar of slide wedge both sides and the cotton cell body adaptation of slider both sides, such design, can be under the condition of upper die base and die holder separation, the upper die base descends, spacing slide bar gets into from the fibre slide bar opening part of cell body, along with the continuation decline of upper die base, spacing slide bar is used in the cell body of slope, make the slider obtain lateral motion's power, move to the die body along the guide rail. After the punching is completed, the upper die base rises, and the limiting slide rod acts on the groove body, so that the groove body moves towards the direction far away from the die body, and when the groove body moves to the initial position, the limiting slide rod leaves from the groove body, and the upper die base can continuously rise. The upper die base and the lower die base are in stable linkage with the slide block, and can be freely separated.

Preferably, spacing slide bar includes splint and installs the slip arch at splint inboard, wherein the both sides of splint installation slide wedge, and the one end inboard that the slide arch was kept away from the slide wedge at splint is installed to the slip arch, the cell body and the protruding adaptation that slides of slider.

Through adopting above-mentioned technical scheme, the fibre slide bar includes splint and slip arch, and wherein splint are used for extending the side of slide wedge, and the slip arch on the splint is used for with the spacing connection of cell body on the slider to the slip arch adopts flat cylindrical structure, conveniently passes in and out the cell body.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the die adopts a combination form of the wedge and the sliding punch to perform one-time punching on a plurality of holes with different angles on the same arc piece, thereby effectively improving the precision and accuracy of punching;

2. an upper die base of the die is cast with a wedge, a lower die base is provided with a corresponding slide block, and the upper die base and the lower die base can push each punch to move forwards horizontally under the interaction of the wedge and the slide block;

3. adopt slide wedge and slider swing joint, components of a whole that can function independently complex mode to slide wedge and slider respectively with be dismantled between upper die base and the die holder and be connected, can be according to the difference of processing the work piece, adjust its self position, make the mould have comparatively wide application range, the mill can adjust by oneself as required, greatly reduced manufacturing cost.

Drawings

FIG. 1 is a schematic view of an overall structure of a multi-angle circular arc punching die;

FIG. 2 is a schematic front view of a multi-angle circular arc punching die without an upper die holder;

FIG. 3 is a schematic view of a reverse structure of a multi-angle circular arc punching die with an upper die base removed;

FIG. 4 is a schematic structural diagram of a cushioning layer in a front view of a multi-angle circular arc punching die;

FIG. 5 is a schematic view of a disassembled structure of a punch and a hydraulic cylinder in a multi-angle circular arc punching die.

Description of reference numerals: 1. an upper die holder; 11. a wedge; 111. a chute; 112. a limiting slide bar; 1121. a splint; 1122. a sliding projection; 12. limiting and perforating; 13. a material pressing plate; 131. a hydraulic mechanism; 132. an arc-shaped plate; 2. a lower die holder; 21. a slider; 211. a guide projection; 212. a trough body; 22. a punch fixing plate; 221. a groove; 222. a hydraulic cylinder; 223. a rebound spring; 23. a punch; 231. a square groove; 25. a mold body; 251. a fixed mount; 252. a concave film; 2521. a porous body; 253. an arc-shaped baffle plate; 2531. removing the material and guiding the ring; 254. a workpiece placing groove; 26. a guide rail; 261. a limiting bulge; 27. a guide bar; 271. a guide portion; 272. a limiting part; 28. a buffer layer; 281. a shock absorbing spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses multi-angle circular arc cut-out press.

Referring to fig. 1, 2, 3, 4 and 5, the multi-angle circular arc punching die comprises an upper die holder 1 and a lower die holder 2, wherein the upper die holder 1 is provided with a plurality of wedges 11, the lower die holder 2 is provided with a corresponding number of sliding blocks 21, the outer side surfaces of the sliding blocks 21 are matched with the inner side surfaces of the wedges 11, the sliding blocks 21 are provided with guide protrusions 211, and the wedges 11 are provided with sliding grooves 111 matched with the guide protrusions; a punch fixing plate 22 is mounted on the inner side of the slider 21, a plurality of punches 23 are mounted on one side, away from the slider 21, of the punch fixing plate 22, the tail ends of the punches 23 are connected with the punch fixing plate 22 in a sliding manner, square grooves 231 are formed in the tail ends of the punches 23, grooves 221 matched with the square grooves 231 are formed in the corresponding punch fixing plate 22, hydraulic cylinders 222 matched with the square grooves 231 at the tail ends of the punches 23 are arranged in the grooves 221, and included angles are formed among the punches 23 mounted on the same punch fixing plate 22; a die body 25 is arranged at the center of the lower die holder 2, a concave film 252 corresponding to the punch 23 is arranged on the die body 25, an arc-shaped baffle 253 with a stripping guide ring 2531 is sleeved outside the concave film 252, and a workpiece placing groove 254 is formed between the arc-shaped baffle 253 and the concave film 252; the top surface of the lower die holder 2 is also provided with a plurality of groups of guide rails 26 matched with the slide block 21, and each group of guide rails 26 comprises two parallel tracks. The cut-out press of multi-angle, compare with conventional cut-out press, all have upper die base 1 and 2 combinations of die holder to form, the difference is, the cut-out press of multi-angle installs slide wedge 11 on upper die, install the slider 21 that corresponds quantity on the lower die, and both coincide each other, realized passing through slide wedge 11 and slider 21's effect with the decurrent pressure of last mould, change into horizontal effort, the protruding 211 of direction that is equipped with on the slider 21 cooperates with spout 111 on the slide wedge 11, can let the comparatively stable operation of slider 21, can realize comparatively accurate regulation. The punch fixing plate 22 arranged on the inner side of the sliding block 21 is used for installing the punches 23, and included angles are formed among the punches 23 installed on the punch fixing plate 22, so that a multi-angle punching function can be realized. The square groove 231 formed at the tail end of the punch 23 is matched with the groove 221 on the punch fixing plate 22, the hydraulic cylinder 222 is arranged between the square groove and the groove, the punch 23 is pushed to act on the punch fixing plate 22 through hydraulic action, and after the slide block 21 is moved to a punching position by the wedge 11, the punch 23 performs punching operation through the action of the hydraulic cylinder 222. And an included angle is formed between the punches 23 arranged on the same punch fixing plate 22, so that the energy can meet the requirement of multi-angle punching. The die body 25 is installed at the center of the lower die holder, the die body 25 is used for placing a workpiece and limiting the hole filling position, the arc-shaped baffle 253 sleeved on the outer side of the die body 25 is provided with the stripping guide ring 2531, the center of the punch 23 can correspond to the hole center of the concave film 252, and the workpiece enters the groove 221 after being punched and penetrated, so that the normal punching is realized. The workpiece placement groove 254 that is equipped with between cowl 253 and the concave membrane 252 can carry out spacingly to the work piece that punches a hole to the work piece takes place to damage to pop out among the cutting process, has improved the security performance, and the guide rail 26 of the top installation of lower grinding seat is used for the slip of slider 21, and every group guide rail 26 all adopts the track of two parallels, can guarantee the stability of slider 21 motion.

Referring to fig. 1, 2 and 3, the lower die holder 2 is further provided with guide rods 27 around the lower die holder 2, and the upper die holder 1 is provided with a limiting through hole 12 at a corresponding position, the guide rods 27 are divided into a top guide portion 271 and a bottom limiting portion 272, wherein the diameter of the limiting portion 272 is larger than that of the guide portion 271. The guide rods 27 arranged around the lower die holder 2 can be provided with the limiting through holes 12 corresponding to the upper die holder 1, so that certain guiding effect can be achieved in the pressing process of the upper die holder 1, the situation that the upper die holder 1 and the lower tail seat are opposite in position is avoided, and the stability of the punching process is effectively guaranteed. The guide rod 27 is further divided into a guide part 271 with a small diameter and a limiting part 272 with a large diameter, the guide part 271 is matched with the limiting through hole 12, and the limiting part 272 can limit the pressing position of the upper die holder 1, so that damage of the punching grinding tool and failure of workpiece punching caused by too large pressing degree are avoided.

Referring to fig. 1, 2, 3 and 5, a plurality of spring grooves are further formed in one side surface of the punch fixing plate 22 where the punch 23 is mounted, and rebound springs 223 are mounted in the spring grooves and are uniformly distributed on the punch fixing plate 22. The punch fixing plate 22 is provided with a spring groove on one side surface provided with the punch 23, and the rebound spring 223 installed in the spring groove can be used for retreating the auxiliary sliding block 21 in the direction away from the die body 25 in the ascending process of the upper die base 1 after the punching is completed, so that the punching process is more stable.

Referring to fig. 1, 2 and 3, the wedge 11 on the upper die holder 1 is detachably connected with the upper die holder 1, the guide rail 26 on the lower die holder 2 is also detachably connected with the lower die holder 2, and a limiting protrusion 261 is installed at one end of the guide rail 26 close to the wedge 11. Guide rail 26 on slide wedge 11, the die holder 2 on the upper die base 1 respectively with upper die base 1 and die holder 2 detachable connection, can adjust the position and the direction of punching a hole according to the demand of product to be equipped with spacing arch 261 in the one end that guide rail 26 is close to slide wedge 11, can carry on spacingly to gliding slider 21 on the guide rail 26, avoid after the completion punches a hole, slider 21 breaks away from guide rail 26 at the in-process that returns.

Referring to fig. 1, 2 and 3, the mold body 25 in the lower die holder 2 is fixed on the top surface of the lower die holder 2, the mold body 25 includes a fixing frame 251, a concave film 252 and an arc-shaped baffle 253, wherein the fixing frame 251 and the arc-shaped baffle 253 are composed of two opposite semicircular pipelines, the fixing frame 251 is fixedly connected with the lower die holder 2, and the concave film 252 is adapted to the inner side wall of the fixing frame 251. The die body 25 on the lower die holder 2 is installed on the top surface of the lower die holder 2, and comprises a fixing frame 251 fixedly installed on the rear side, a concave film 252 is installed in the fixing frame 251 and can be used for providing corresponding holes for punching of workpieces, the arc-shaped baffle 253 and the fixing frame 251 surround the concave film 252 in the middle, and a stripping guide ring 2531 in the arc-shaped baffle 253 can correspond the center of the punch 23 to the hole of the concave film 252. Wherein mount 251 and lower membrane seat fixed connection, and concave membrane 252 and the interior survey wall adaptation of mount 251, when the work piece of different models punches a hole, only need change concave membrane 252 to the arc-shaped baffle 253 of installation adaptation can, has improved the range of application of mould greatly.

Referring to fig. 1, 2 and 3, the thickness of the fixing frame 251 is greater than that of the arc-shaped baffle 253, and the stripping guide ring 2531 provided on the arc-shaped baffle 253 corresponds to the hole 2521 on the concave film 252. The thickness of mount 251 is required to be thicker than cowl 253, can form stable annular structure after cowl 253 places the work piece, the effectual stability that punches a hole that improves to the material that takes off on cowl 253 leads positive circle 2531 and the hole body 2521 on the concave membrane 252 is to drinking, and the cooperation is used, punches a hole more convenient and fast.

Referring to fig. 1, 2 and 3, a pressure plate 13 is further installed at the top of the upper die holder 1, a hydraulic mechanism 131 is disposed at the top of the pressure plate 13, the shape of the pressure plate 13 is the same as the top surface of the die body 25, and an arc plate 132 adapted to the workpiece placement groove 254 is disposed at the bottom of the pressure plate 13. The die body 25 can be pressed to the in-process that the mould punches a hole and control at the top of upper die base 1 and install pressure flitch 13, and the top of pressure flitch 13 passes through hydraulic pressure mechanism 131 drive, and it is stable to press the effect, presses the size and the die body 25 adaptation of flitch 13 to the arc 132 with work piece standing groove 254 adaptation is installed to the bottom of pressure flitch 13, can carry out effectual pressing to the work piece that the size is little, reduces the work piece and takes place to remove the possibility that produces the substandard product at the in-process that punches a hole.

Referring to fig. 1 and 4, a buffer layer 28 is disposed on the top surface of the lower die holder 2, the buffer layer 28 is disposed at the bottom of the die body 25 and the bottom of the slide rail, and damping springs 281 are densely distributed in the buffer layer 28. Be equipped with buffer layer 28 on the top surface of die holder 2, buffer layer 28 sets up in the bottom of die body 25 and slide rail, and in the process of punching a hole that upper die base 1 pushed down, the buffer layer 28 of setting can effectively alleviate the pressure that receives to damping spring 281 densely covered in the bottom of die body 25 and slide rail as buffer layer 28, the quality of punching a hole of the difficult influence work piece of producing local sunken.

Referring to fig. 1, 2 and 3, the contact surface of the wedge 11 and the slide block 21 adopts a sliding groove 111 with an equilateral triangle section, the two sides of the wedge 11 are provided with a limit slide rod 112, two side surfaces of the slide block 21 are provided with groove bodies 212 matched with the limit slide rod 112, and an opening of the limit slide rod 112 is arranged at an entrance at the top of the groove bodies 212. The tangent plane of the sliding groove 111 on the contact surface of the wedge 11 and the sliding block 21 is an equilateral triangle, which can have enough stability in the connection process, the limit slide bars 112 on the two sides of the wedge 11 are matched with the cotton groove bodies 212 on the two sides of the sliding block 21, and by the design, under the condition that the upper die base 1 and the lower die base 2 are separated, the upper die base 1 descends, the limit slide bars 112 enter from the fiber slide bar openings of the groove bodies 212, and along with the continuous descending of the upper die base 1, the limit slide bars 112 act on the inclined groove bodies 212, so that the sliding block 21 obtains the force of transverse movement and moves to the die body 25 along the guide rail 26. After the punching is completed, the upper die base 1 is lifted, the limiting slide rod 112 acts on the groove body 212, so that the groove body 212 moves towards the direction away from the die body 25, when the limiting slide rod 112 moves to the initial position, the limiting slide rod 112 leaves from the groove body 212, and the upper die base 1 can continue to lift. The upper die holder 1 and the lower die holder 2 are in stable linkage with the slide block 21, and can be freely separated.

Referring to fig. 1 and 2, the limit slide rod 112 includes a clamping plate 1121 and a slide protrusion 1122 installed inside the clamping plate 1121, wherein the clamping plate 1121 is installed on both sides of the wedge 11, the slide protrusion 1122 is installed inside one end of the clamping plate 1121 far away from the wedge 11, and the slot 212 of the slide block 21 is matched with the slide protrusion 1122. The fiber sliding rod comprises a clamping plate 1121 and a sliding protrusion 1122, wherein the clamping plate 1121 is used for extending out of the side face of the wedge 11, the sliding protrusion 1122 on the clamping plate 1121 is used for being in limit connection with the groove body 212 on the sliding block 21, and the sliding protrusion 1122 is of a flat cylindrical structure and is convenient to enter and exit the groove body 212.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a multi-angle circular arc cut-out press, includes upper die base (1) and die holder (2), its characterized in that: the upper die holder (1) is provided with a plurality of wedges (11), the lower die holder (2) is provided with a corresponding number of sliding blocks (21), the outer side surfaces of the sliding blocks (21) are matched with the inner side surfaces of the wedges (11), the sliding blocks (21) are provided with guide protrusions (211), and the wedges (11) are provided with sliding grooves (111) matched with the guide protrusions; the inner side of the sliding block (21) is provided with a punch fixing plate (22), one side, far away from the sliding block (21), of the punch fixing plate (22) is provided with a plurality of punches (23), the tail ends of the punches (23) are connected with the punch fixing plate (22) in a sliding mode, square grooves (231) are formed in the tail ends of the punches (23), grooves (221) matched with the square grooves (231) are formed in the corresponding punch fixing plate (22), hydraulic cylinders (222) matched with the square grooves (231) in the tail ends of the punches (23) are arranged in the grooves (221), and included angles are formed among the punches (23) arranged on the same punch fixing plate (22); a die body (25) is installed at the center of the lower die holder (2), a concave film (252) corresponding to the punch head (23) is installed on the die body (25), an arc-shaped baffle (253) with a stripping guide ring (2531) is sleeved on the outer side of the concave film (252), and a workpiece placing groove (254) is formed between the arc-shaped baffle (253) and the concave film (252); the top surface of the lower die holder (2) is also provided with a plurality of groups of guide rails (26) matched with the sliding block (21), and each group of guide rails (26) comprises two parallel tracks.

2. The multi-angle circular arc punching die of claim 1, wherein: the die comprises a lower die holder (2) and is characterized in that guide rods (27) are further mounted on the periphery of the lower die holder (2), limiting through holes (12) are formed in the corresponding positions of the upper die holder (1), each guide rod (27) is divided into a guide portion (271) at the top and a limiting portion (272) at the bottom, and the diameter of each limiting portion (272) is larger than that of each guide portion (271).

3. The multi-angle circular arc punching die of claim 1, wherein: still seted up a plurality of spring grooves on the side of drift fixed plate (22) installation drift (23), all install resilience spring (223) in the spring groove, and the spring groove equipartition is on drift fixed plate (22).

4. The multi-angle circular arc punching die of claim 1, wherein: slide wedge (11) on upper die base (1) can be dismantled with upper die base (1) and be connected, and guide rail (26) on die holder (2) also are for dismantling the connection with die holder (2), spacing arch (261) are installed to the one end that guide rail (26) are close to slide wedge (11).

5. The multi-angle circular arc punching die of claim 1, wherein: the die body (25) in the lower die holder (2) is fixed on the top surface of the lower die holder (2), the die body (25) comprises a fixing frame (251), a concave film (252) and an arc-shaped baffle (253), wherein the fixing frame (251) and the arc-shaped baffle (253) are composed of two opposite semicircular pipelines, the fixing frame (251) is fixedly connected with the lower die holder (2), and the concave film (252) is matched with the inner side wall of the fixing frame (251).

6. The multi-angle circular arc punching die of claim 5, wherein: the thickness of the fixing frame (251) is larger than that of the arc-shaped baffle (253), and the stripping guide ring (2531) arranged on the arc-shaped baffle (253) corresponds to the hole body (2521) on the concave membrane (252).

7. The multi-angle circular arc punching die of claim 1, wherein: the die is characterized in that a material pressing plate (13) is further mounted at the top of the upper die base (1), a hydraulic mechanism (131) is arranged at the top of the material pressing plate (13), the shape of the material pressing plate (13) is the same as that of the top surface of the die body (25), and an arc-shaped plate (132) matched with the workpiece placing groove (254) is arranged at the bottom of the material pressing plate (13).

8. The multi-angle circular arc punching die of claim 1, wherein: the top surface of the lower die holder (2) is provided with a buffer layer (28), the buffer layer (28) is arranged at the bottoms of the die body (25) and the slide rail, and damping springs (281) are densely distributed in the buffer layer (28).

9. The multi-angle circular arc punching die of claim 1, wherein: the contact surface of slide wedge (11) and slider (21) adopts slide groove (111) that the tangent plane is equilateral triangle, and installs limit slide bar (112) on the both sides of slide wedge (11), set up cell body (212) with limit slide bar (112) adaptation on the both sides face on slider (21), and the top entrance of cell body (212) is equipped with limit slide bar (112) opening.

10. The multi-angle circular arc punching die of claim 9, wherein: the limiting sliding rod (112) comprises a clamping plate (1121) and a sliding protrusion (1122) installed on the inner side of the clamping plate (1121), wherein the clamping plate (1121) is installed on two sides of the wedge (11), the sliding protrusion (1122) is installed on the inner side of one end, far away from the wedge (11), of the clamping plate (1121), and a groove body (212) of the sliding block (21) is matched with the sliding protrusion (1122).

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