CN222245929U - Automatic die cutting machine for plastic part water gap - Google Patents

Abstract

The utility model relates to an automatic die-cutting machine for a plastic part water gap, which comprises an operation table, wherein a lower module capable of moving back and forth is arranged on the top surface of the operation table, a supporting plate is erected on a position, close to the rear end, of the top surface of the operation table, a die-cutting machine capable of moving up and down is arranged on the supporting plate, an upper module is arranged at the bottom of the die-cutting machine, the upper module can be matched with the lower module which moves to the rear end of the operation table in an up-down corresponding and up-down inserting manner, the plastic part placed on the lower module can be cut off through the upper module, a waste port which is communicated up and down is arranged at the position, corresponding to the bottom of the upper module, of the top surface of the operation table, and a waste bin which corresponds up-down to the waste port is arranged inside the operation table. The automatic punching machine for the plastic part water gap can completely cut the water gap from the root through the cutter from top to bottom, and the notch is symmetrical and smooth, so that the appearance aesthetic property of the plastic part after water gap removal is ensured, secondary correction is avoided, the water gap cutting efficiency can be effectively improved, and the use cost is lower.

Description

Automatic die cutting machine for plastic part water gap

Technical Field

The utility model relates to cutting of a water gap of an injection molding piece, in particular to an automatic punching machine for the water gap of the injection molding piece.

Background

In the injection molding process, the inner runner in the injection mold is communicated with the injection molding cavity, so that a water gap similar to the shape of the inner runner remains on the plastic part after the mold is removed, and the water gap remaining on the plastic part is not used at all, so that the water gap needs to be removed.

At present, the water gap remained on the plastic part is mainly cut off in a manual mode, and a craft knife or scissors is used for manually cutting off the water gap remained on the plastic part. However, the phenomenon that the nozzle cannot be undercut often occurs when the nozzle is manually cut, namely the nozzle is easily cut off during the cutting process, the nozzle is not cut off from the root connected with the plastic part, the phenomenon of cutting askew often occurs, the appearance of the plastic part is influenced, secondary treatment is needed, time and manpower are consumed, the processing efficiency is relatively low, and the processing cost is relatively high.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the automatic die cutting machine for the plastic part water gap, which can ensure that the notch is regular and the cutting efficiency of the plastic part water gap is high.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

The utility model provides a mould mouth of a river automatic punching machine, has the operation panel of box formula structure, the top surface of operation panel is provided with the lower module that can reciprocate, and the position that the operation panel top surface is close to the rear end is erect and is provided with the backup pad, be provided with the cross cutting machine that can reciprocate in the backup pad, cross cutting machine bottom is provided with rather than fixed connection's last module, go up the module and can reciprocate through the cross cutting machine, and go up the module and can correspond from top to bottom and peg graft the cooperation with the lower module that moves to the operation panel rear end, can carry out the work of cutting off of mouth of a river to the plastic part of placing on the lower module through last module, the position that the operation panel top surface corresponds last module bottom is provided with the waste material mouth of upper and lower intercommunication, and the operation panel inside is provided with the waste material case that the opening upwards and corresponds from top to bottom with the waste material mouth.

The die cutting machine is provided with two groups of lower modules, the bottoms of the die cutting machines of each group are respectively provided with an upper group of modules, the operation table is internally provided with a linear module, the linear modules are provided with two groups of lower modules respectively, the sliding table of the linear module is fixedly connected with a connecting block, the upper end of the connecting block penetrates through the top of the operation table and is fixedly connected with the lower modules, and the operation table can drive the lower modules to move forwards and backwards along the linear guide rail through the connecting block.

Further, the die cutting machine comprises a support, the support is fixed at the top of the support plate, the top surface of the support is provided with a blanking cylinder fixedly connected with the support, a piston rod of the blanking cylinder is vertically downward and penetrates through the top of the support to be fixedly connected with a connecting block arranged in the support, two mutually symmetrical upper guide posts are arranged at the positions, close to the left side and the right side, of the bottom of the connecting block, the upper guide posts penetrate through an upper guide sleeve preset in the support plate to be fixedly connected with an upper die holder arranged below the support plate, and the upper die set is fixedly connected with the bottom surface of the upper die holder.

Further, the upper die holder is of a rectangular structure, four corners of the top of the upper die holder are respectively provided with a vertically upward lower guide post, and the lower guide posts are upwards arranged in a lower guide sleeve preset in the supporting plate in a penetrating mode.

Further, the lower die set comprises a lower die plate, a transition hole which is communicated up and down is arranged in the center of the lower die plate, a lower base plate which is fixedly connected with the lower die plate is arranged on the top surface of the lower die plate, a waste falling hole which is communicated up and down is arranged on the lower base plate, the waste falling hole corresponds up and down with the transition hole, a jig for placing a plastic part is arranged at the position, close to the waste falling hole, of the top surface of the lower base plate, a supporting plate is arranged below the bottom of the lower die plate, the outline structure of the supporting plate is identical with the outline of the transition hole, the supporting plate is hung below the bottom surface of the lower base plate through a hanging rod, the hanging rod is a threaded rod and is in threaded connection with the lower base plate, blanking ports which correspond up and down with the transition hole and the waste falling hole are arranged on the supporting plate, the blanking ports can correspond up and down with the waste ports, and the top of the supporting plate is provided with a top block which corresponds up and down with the jig and is matched with the embedded.

Further, a trough for placing plastic parts is arranged at the top of the jig, a lower connecting hole which is communicated up and down is arranged at the bottom of the trough, the upper end of the top block is embedded in the lower connecting hole and in clearance fit, and a guide cutting groove which is communicated up and down with the waste falling hole is arranged on one side of the jig corresponding to the waste falling hole.

Further, the upper die set includes the cope match-plate pattern, the stopper has been hung through the spring pin to the bottom of cope match-plate pattern, the center of stopper is provided with the jack of upper and lower intercommunication, the embedded briquetting that is in the same place rather than upper and lower sliding fit of jack, the top of briquetting and the bottom fixed connection of cope match-plate pattern, one side of stopper is provided with the cutter that the blade is decurrent, the top of cutter and the bottom fixed connection of cope match-plate pattern are in the same place.

Further, the part of the bottom of the upper template, which is close to the corners, is provided with positioning columns which are vertically arranged, and the lower module is provided with positioning sleeves which are mutually corresponding to the positioning columns in number and position.

Further, a material supporting frame is arranged on the front face of the operating platform, and a material box is placed in the material supporting frame and corresponds to the lower module in front-back mode.

Compared with the prior art, the automatic die-cutting machine for the plastic part water gap has the advantages that the plastic part with the water gap to be cut can be placed in the jig in accordance with the outline of the automatic die-cutting machine, one side of the plastic part with the water gap is close to the side face of the jig, the water gap can be completely cut from the root part from top to bottom through the cutter, the notch is symmetrical and flat, the appearance aesthetic property of the plastic part after water gap removal is guaranteed, secondary correction is avoided, the automatic cutting mode is more stable, the water gap cutting efficiency can be effectively improved, the use cost is lower, the popularization in industry is facilitated, and the adaptability is strong.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an automatic die-cutting machine for a plastic part water gap;

FIG. 2 is a schematic top view of an automatic die-cutting machine for plastic parts water gap according to the present utility model;

FIG. 3 is a cross-sectional view of the structure of A-A in FIG. 2;

FIG. 4 is a schematic top isometric view of the upper and lower die sets of the present utility model when they are closed;

FIG. 5 is a schematic view of the bottom side of the upper and lower die sets of the present utility model when they are closed;

FIG. 6 is a schematic top view of the upper and lower mold assemblies of the present utility model;

FIG. 7 is a cross-sectional view of the structure B-B of FIG. 6;

FIG. 8 is a cross-sectional view of the structure of C-C in FIG. 6;

FIG. 9 is a schematic top isometric view of the upper module of the present utility model;

FIG. 10 is a schematic view of the bottom axial side of the upper module of the present utility model;

FIG. 11 is a schematic view of the lower module structure of the present utility model;

FIG. 12 is a schematic diagram of a jig according to the present utility model.

The device comprises a working table 1, a waste port 11, a supporting plate 12, a linear guide rail 13, a material box 14, a supporting plate 15, a bracket 16, a linear module 161, a connecting block 2, a die cutting machine 21, a bracket 22, a blanking cylinder 23, a connecting block 231, an upper guide pillar 24, an upper die holder 241, a lower guide pillar 3, a lower module 31, a lower die plate 311, a transition hole 32, a lower base plate 321, a waste falling hole 33, a jig 331, a lower connecting hole 332, a trough 333, a guide cutting groove 34, a locating sleeve 35, a supporting plate 351, a blanking port 352, a hanging rod 36, a top block 4, an upper module 41, an upper die plate 411, a locating column 42, a limiting block 421, a jack 43, a pressing block 44, a spring pin 45 and a cutter.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. In the description of the embodiments of the present utility model, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the product of the present utility model is conventionally put when used, it is merely for convenience of describing the present utility model and simplifying the description, and it does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like, if any, do not denote a requirement that the component be absolutely horizontal or vertical, but rather may be slightly inclined. As "horizontal" merely means that its orientation is more horizontal than "vertical" and does not mean that the structure or component must be entirely horizontal, but may be slightly inclined.

In the description of the embodiments of the present utility model, "plurality" means at least 2.

In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or communicating between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Examples

Referring to the drawings 1 and 2 of the specification, the drawings 1 and 2 of the specification show an automatic die-cutting machine for plastic part water gaps, which is mainly used for cutting plastic part water gaps of plate members, the automatic die-cutting machine for the plastic part water gap is provided with an operation table 1 with a box type structure, the top surface of the operation table 1 is horizontal, the top surface of the operation table 1 is provided with a lower die set 3 which can move forwards and backwards, and the operation table is shown in figure 7 of the specification, 8 and 11, the lower die set 3 comprises a lower die plate 31, the lower die plate 31 is in a rectangular structure, a transition hole 311 which is communicated up and down is formed in the center of the lower die plate 31, the transition hole 311 is a rectangular hole, the opening area is relatively large, a lower base plate 32 fixedly connected with the lower die plate 31 is arranged on the top surface of the lower die plate 31, the lower base plate 32 is convenient to assemble and disassemble through bolt connection, a waste falling hole 321 which is communicated up and down is formed in the lower base plate 32, water gap waste after cutting conveniently falls down, the waste falling hole 321 corresponds to the transition hole 311 up and down, interference of falling of the water gap waste is avoided, a jig 33 for placing a plastic part is arranged at a position, close to the waste falling hole 321, of the top surface of the lower base plate 32, and one side, corresponding to the waste falling hole 321, of the jig 33 can be protruded on the waste falling hole 321; referring to fig. 12 of the specification, the top of the jig 33 is provided with a trough 332 for placing plastic parts, the plastic parts can be limited in the horizontal direction through the periphery of the trough 332 after being placed in the trough 332, the bottom of the trough 332 is provided with a lower connecting hole 331 which is communicated up and down, one side of the jig 33 corresponding to the waste falling hole 321 is provided with a guide cutting groove 333 which is communicated up and down with the waste falling hole 321, the top of the cutting groove 333 is communicated with the trough 332, the undercut of a water gap on the plastic parts is facilitated, and the cut water gap waste is convenient to drop from the waste falling hole 321, referring to fig. 5 of the specification, the bottom of the lower template 31 is provided with a supporting plate 35, the contour structure of the supporting plate 35 is identical with the contour of the transition hole 311, the supporting plate 35 can be embedded in the transition hole 311 at least, the supporting plate 35 is hung below the bottom of the lower backing plate 32 through a hanging rod 352, the hanging rod 352 is in an inverted T-shaped structure for conveniently adjusting the height of the supporting plate 35, the hanging rod 352 is in threaded connection with the lower backing plate 32, the interval adjustment between layer board 35 and lower bolster 32 bottom can be realized to threaded connection hole rotation jib 352 of cooperation lower bolster 32 bottom, be provided with on layer board 35 with transition hole 311 and fall the blanking mouth 351 that waste hole 321 corresponds from top to bottom, blanking mouth 351 can correspond from top to bottom with waste material mouth 11, and convenient excision unloading's mouth of a river waste material is from falling waste hole 321, The transition hole 311 and the blanking hole 351 fall down, the top of the supporting plate 35 is provided with a top block 36 which is matched with the jig 33 in an embedded mode, the upper end of the top block 36 is embedded in the lower connecting hole 331 and in clearance fit, the bottom surface of a plastic part placed in the trough 332 can be supported in an auxiliary mode through the top block 36, and the height of the supporting plate 35 can be adjusted to adjust the height of the top block 36 in the lower connecting hole 331, so that the supporting plate is suitable for supporting plastic parts with different thicknesses.

In order to facilitate the horizontal movement of the lower module 3 on the operation table 1, the lower module 3 is in sliding connection with the operation table 1 through a linear guide rail 13, the linear guide rail 13 consists of a sliding rail and a sliding block which are in sliding fit, the sliding rail is longitudinally arranged on the top surface of the operation table 1, the lower module 3 is fixedly connected with the sliding block, two groups of linear guide rails 13 are arranged at the position, close to the left side and the right side, of the bottom of the lower module 3, and the two groups of linear guide rails 13 are arranged in parallel left and right, so that the stability of the lower module 3 is ensured, and in order to improve the processing efficiency, the lower module 3 is provided with two groups, is arranged on the top surface of the operation table 1 in parallel left and right, and can move in a staggered mode; in order to drive the lower module 3 to move back and forth on the operation table 1, as shown in fig. 3 of the specification, a linear module 16 is arranged in the operation table 1, two groups of corresponding linear modules 16 are respectively corresponding to the two groups of lower modules 3, a connecting block 161 with an upper end penetrating through the top of the operation table 1 and fixedly connected with the lower module 3 is fixedly connected to a sliding table of the linear module 16, a connecting groove which is communicated up and down and has a length consistent with that of the linear guide 13 is arranged at the top of the operation table 1, the connecting block 161 penetrates through the connecting groove and is connected with the lower module 3, the operation table 1 can drive the lower module 3 to move back and forth along the linear guide 13 through the connecting block 161, a supporting plate 12 is erected at a position of the top surface of the operation table 1 close to the rear end, the supporting plate 12 is erected above the top of the linear guide 13, a die-cutting machine 2 capable of moving up and down is arranged on the supporting plate 12, as shown in fig. 1 of the specification, the die-cutting machine 2 comprises a bracket 21, the bracket 21 is fixed at the top of the supporting plate 12, the top surface of the device is provided with a blanking cylinder 22 fixedly connected with the device, a piston rod of the blanking cylinder 22 is vertically downward and penetrates through the top of the bracket 21 to be fixedly connected with a connecting block 23 arranged in the bracket 21, and the blanking cylinder 22 can drive the connecting block 23 to move up and down through the piston rod; two mutually symmetrical upper guide posts 231 are arranged at the bottom of the connecting block 23 near the left side and the right side, the lower ends of the upper guide posts 231 penetrate through upper guide sleeves preset on the supporting plate 12 and are fixedly connected with an upper die holder 24 arranged below the supporting plate 12, the upper die holder 24 can be driven to synchronously move up and down through the upper guide posts 231 when the connecting block 23 moves up and down, in order to ensure the stability of the upper die holder 24 during the up-down movement, the upper die holder 24 is in a rectangular structure, four corners at the top of the upper die holder 24 are respectively provided with a vertically upward lower guide post 241, the lower guide posts 241 are upwards arranged in lower guide sleeves preset on the supporting plate 12 in a penetrating mode, and the stability of the horizontal position of the upper die holder 24 during the up-down movement can be ensured through the lower guide posts 241 and the lower guide sleeves which are matched in an up-down sliding mode; the bottom of the die cutting machine 2 is provided with an upper die set 4 fixedly connected with the die cutting machine 2, specifically, the upper die set 4 is fixedly connected with the bottom surface of an upper die holder 24, the upper die set 4 can move up and down through the die cutting machine 2, namely the upper die holder 24, and the upper die set 4 can be matched with a lower die set 3 moving to the rear end of the operation table 1 in an up-down corresponding and up-down inserting manner, when the lower die set 3 with a plastic part is moved to the rear end of a linear guide rail 13, the upper die set 4 corresponds up and down to the lower die set 3, the die cutting machine 2 can drive the upper die set 4 to be matched with the lower die set 3 downwards, the cutting tool 45 on the upper die set 4 can cut off a water gap of the plastic part placed on the lower die set 3, in order to be matched with the lower die set 3, the die cutting machine 2 has two groups corresponding to the two groups of lower die sets 3 respectively, and the bottom of each group of die cutting machine 2 is provided with a group of upper die sets 4, see figure 4 of the specification, 6 and 10, the upper module 4 comprises an upper template 41, the upper template 41 is fixedly connected with the upper die holder 24 through bolts, a limiting block 42 is hung at the bottom of the upper template 41 through a spring pin 44, the limiting block 42 can be upwards pushed by the bottom and can automatically reset downwards under the condition of no external force, a plastic piece placed on the jig 33 can be pre-pressed and limited through the limiting block 42, a jack 421 which is vertically communicated is arranged in the center of the limiting block 42, a pressing block 43 which is vertically matched with the upper template is embedded in the jack 421, the top of the pressing block 43 is fixedly connected with the bottom of the upper template 41, the pressing block 43 moves synchronously with the upper template 41, and is used for positioning the top of the plastic piece placed on the jig 33, so that the plastic piece of the plate cannot deform when the water gap is cut, one side of the limiting block 42 is provided with a cutter 45 with a downward cutting edge, the cutting edge of the cutter 45 protrudes downwards below the bottoms of the limiting block 42 and the pressing block 43, the top of the cutter 45 is fixedly connected with the bottom of the upper template 41, the cutter 45 moves synchronously along with the upper template 41, and the top of the lower template is correspondingly matched with the lower cutting groove 45 when the lower template 4 moves downwards, and the lower template 45 is guided to the corresponding to the bottom of the lower die set 45, and the size of the lower template is 333 is enabled to be embedded in the upper die holder; referring to fig. 10 of the specification, in order to ensure the downward height distance of the upper module 4, the bottom of the upper module 41 is provided with positioning posts 411 vertically arranged near corners, the lower module 3 is provided with positioning sleeves 34 corresponding to the positioning posts 411 in number and position, specifically, the positioning sleeves 34 are fixedly installed on the lower pad 32, when the lower module 3 moves below the bottom of the upper module 4, the positioning column 411 on the upper module 4 is in up-down correspondence with the positioning sleeve 34 and can be in up-down sleeve joint fit, the position of the positioning column 411 is limited through the positioning sleeve 34, the descending height position of the upper module 4 is further limited, in order to facilitate the falling and collection of cut off water gap waste, the position of the top surface of the operating platform 1 corresponding to the bottom of the upper module 4 is provided with a waste port 11 which is communicated up and down, the waste port 11 is arranged between two parallel linear guide rails 13, one waste port 11 corresponds to the lower part of the bottom of each group of upper modules 4, when the lower module 3 moves to the lower part of the bottom of the upper module 4, the blanking port 351 on the lower module 3 corresponds to the waste port 11 up-down, in order to facilitate the collection of water gap waste, the inside of the operating platform 1 is provided with a waste box which is opened up-down and corresponds to the waste port 11, in order to facilitate the removal and placement of cut off plastic parts after the water gap from the lower module 3, the front of the operating platform 1 is provided with a material support 15, the material box 14 is placed in the support 15, the material box 14 is embedded in the material support 15, the material box 15 is conveniently taken out, and the material box 14 is directly and directly corresponds to the two groups of the lower modules 3.

Placing a plastic part to be cut in a trough 332 of a jig 33, erecting a water gap on the plastic part on the top of a guide cutting groove 333, driving a corresponding lower die set 3 to move backwards to a position right below an upper die set 4 by a linear die set 16, driving a connecting block 23 to downwards by a piston rod of a blanking cylinder 22 on the corresponding upper die set 4, pushing an upper die set 24 connected with the connecting block 23 downwards by the connecting block 23, driving an upper die set 4 connected with the bottom of the upper die set 24 to downwards synchronously, enabling the bottom of a limiting block 42 of the upper die set 4 to firstly contact the top surface of the plastic part on the jig 33 when the upper die set 4 downwards, continuing downwards until a pressing block 43 props against the top surface of the plastic part, enabling the bottom surface of the plastic part to be supported by a top block 36, and simultaneously cutting off the water gap on the guide cutting groove 333 by the cutting edge of a cutting knife 45 until the cutting edge of the cutting knife 45 downwards enters the guide cutting groove and the bottom of a positioning column 411 is stopped by the positioning conflict of the positioning sleeve 34, and cut off water gap waste materials fall into a waste material box 11 from top to bottom through a waste falling hole 321, a transition hole 311, a blanking hole 351 and a waste material box 11 in sequence; the upper die set 4 is reset upwards after processing, the lower die set 3 is moved forwards again through the linear die set 16, so that cut plastic parts are conveniently driven to move out, and synchronously, the other group of lower die sets 3 are moved towards the corresponding upper die set 4 after placing the plastic parts to be cut, operators can take out the plastic parts which move to the front of the operation table 1 and are processed from the jig 33 and place the plastic parts into the corresponding material boxes 14, new plastic parts to be cut are placed, and the cutting efficiency of a water gap is greatly improved through the interaction of blanking of the two groups of lower die sets 3.

The automatic die cutting machine for the plastic part water gap can place the plastic part with the water gap to be cut in the jig 33 conforming to the contour of the plastic part, one side of the plastic part with the water gap is close to the side face of the jig 33, the water gap can be completely cut from the root part through the cutter 45 from top to bottom, the notch is symmetrical and smooth, the appearance attractiveness of the plastic part after water gap removal is guaranteed, secondary correction is avoided, the automatic cutting mode is more stable, the water gap cutting efficiency can be effectively improved, the use cost is lower, the popularization in the industry is facilitated, and the adaptability is strong.

It should be emphasized that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model, and that various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (9)

1. The automatic die-cutting machine for the plastic part water gap is characterized in that a lower die set (3) capable of moving back and forth is arranged on the top surface of the operating table (1), a supporting plate (12) is arranged on a position, close to the rear end, of the top surface of the operating table (1), a die cutting machine (2) capable of moving up and down is arranged on the supporting plate (12), an upper die set (4) fixedly connected with the die cutting machine is arranged at the bottom of the die cutting machine (2), the upper die set (4) can move up and down through the die cutting machine (2), the upper die set (4) can be matched with a lower die set (3) moving to the rear end of the operating table (1) in an up-down corresponding and up-down inserting mode, the plastic part placed on the lower die set (3) can be cut off through the upper die set (4), a waste material port (11) which is communicated up and down is arranged at the position, corresponding to the bottom of the upper die set (4), and the upper die set (1) is internally provided with a waste bin which is opened upwards and corresponds to the waste material port (11) up and down.

2. The automatic die-cutting machine for the plastic part water gap is characterized in that the lower die sets (3) are in sliding connection with the operation table (1) through linear guide rails (13), the two die-cutting machines (2) are arranged in parallel left and right, the two die-cutting machines are respectively corresponding to the two lower die sets (3), a group of upper die sets (4) are arranged at the bottom of each die-cutting machine (2), linear die sets (16) are arranged in the operation table (1), the two linear die sets (16) respectively correspond to the two lower die sets (3), a connecting block (161) with the upper end penetrating through the top of the operation table (1) and fixedly connected with the lower die sets (3) is fixedly connected to a sliding table of the linear die sets (16), and the operation table (1) can drive the lower die sets (3) to move forwards and backwards along the linear guide rails (13) through the connecting block (161).

3. The automatic die cutting machine for the plastic part water gap according to claim 1, wherein the die cutting machine (2) comprises a support (21), the support (21) is fixed at the top of a supporting plate (12), a blanking cylinder (22) fixedly connected with the support is arranged on the top surface of the support, a piston rod of the blanking cylinder (22) is vertically downwards and penetrates through the top of the support (21) to be fixedly connected with a connecting block (23) arranged in the support (21), two mutually symmetrical upper guide posts (231) are arranged at the positions, close to the left side and the right side, of the bottom of the connecting block (23), the upper guide posts (231) penetrate through an upper guide sleeve preset on the supporting plate (12) to be fixedly connected with an upper die holder (24) arranged below the supporting plate (12), and the upper die set (4) is fixedly connected with the bottom surface of the upper die holder (24).

4. The automatic die-cutting machine for plastic parts water gap according to claim 3, wherein the upper die holder (24) is of a rectangular structure, four corners of the top of the upper die holder are respectively provided with a lower guide post (241) which is vertically upwards, and the lower guide posts (241) are upwards arranged in a lower guide sleeve preset on the supporting plate (12) in a penetrating way.

5. The automatic die-cutting machine for plastic parts water gaps according to claim 1, wherein the lower die set (3) comprises a lower die plate (31), a transition hole (311) communicated with the lower die plate (31) up and down is arranged in the center of the lower die plate, a lower base plate (32) fixedly connected with the lower die plate is arranged on the top surface of the lower base plate (32), waste falling holes (321) are formed in the lower base plate (32) in a threaded manner, the waste falling holes (321) correspond to the transition holes (311) up and down, a jig (351) for placing plastic parts is arranged on the top surface of the lower base plate (32) close to the waste falling holes (321), a supporting plate (35) is arranged below the bottom of the lower die plate (31), the contour structure of the supporting plate (35) is matched with the contour of the transition holes (311), the supporting plate (35) is hung below the bottom surface of the lower base plate (32) through a hanging rod (352), the hanging rod (352) is connected with the lower base plate (32) in a threaded manner, a blanking jig (311) and a waste falling hole (351) are arranged on the lower base plate (35) in a threaded manner, and a top opening (351) corresponding to the top opening (36) is formed in the lower base plate (35).

6. The automatic die-cutting machine for plastic part water gaps according to claim 5, wherein a trough (332) for placing plastic parts is arranged at the top of the jig (33), a lower connecting hole (331) which is communicated up and down is arranged at the bottom of the trough (332), the upper end of the top block (36) is embedded in the lower connecting hole (331) and is in clearance fit, and a guide cutting groove (333) which is communicated up and down with the waste falling hole (321) is arranged on one side of the jig (33) corresponding to the waste falling hole (321).

7. The automatic die-cutting machine for plastic part water gaps according to claim 1, wherein the upper die set (4) comprises an upper die plate (41), a limiting block (42) is hung at the bottom of the upper die plate (41) through a spring pin (44), a jack (421) which is communicated up and down is arranged in the center of the limiting block (42), a pressing block (43) which is matched with the jack in a sliding manner is embedded in the jack (421), the top of the pressing block (43) is fixedly connected with the bottom of the upper die plate (41), a cutter (45) with a downward cutting edge is arranged on one side of the limiting block (42), and the top of the cutter (45) is fixedly connected with the bottom of the upper die plate (41).

8. The automatic die-cutting machine for plastic parts water gaps according to claim 7, wherein the bottom of the upper die plate (41) is provided with positioning columns (411) which are vertically arranged at positions close to corners, and the lower die set (3) is provided with positioning sleeves (34) which are mutually corresponding to the positioning columns (411) in number and positions.

9. The automatic die-cutting machine for plastic part water gaps according to claim 1, wherein a material supporting frame (15) is arranged on the front surface of the operating platform (1), a material box (14) is arranged in the material supporting frame (15), and the material box (14) corresponds to the lower die set (3) in front-back mode.