CN113043549B

CN113043549B - Bottle blank processing die capable of automatically controlling feeding quantity

Info

Publication number: CN113043549B
Application number: CN202110266629.0A
Authority: CN
Inventors: 胡立军
Original assignee: Guangdong Shunfeng New Material Technology Co ltd
Current assignee: Guangdong Shunfeng New Material Technology Co ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2023-07-21
Anticipated expiration: 2041-03-11
Also published as: CN113043549A

Abstract

The invention discloses a bottle blank processing die capable of automatically controlling feeding quantity, which comprises a movable die plate, a core, a guide post, a stripper plate, a die cavity plate, a guide sleeve, a die cavity mounting hole formed in the die cavity plate, a plurality of die cavity inserts detachably mounted in the mounting hole, a die cavity formed in the die cavity inserts, a mounting groove formed in the die cavity plate, a control plate detachably mounted in the mounting groove, a fixed die plate formed in the upper part of the die cavity plate, a sprue bush detachably mounted on the fixed die plate, a sprue bush formed in the sprue bush, an automatic unloading structure formed in the stripper plate, a feeding quantity control mechanism formed in the control plate and a pressure control mechanism formed in the fixed die plate, wherein the die cavity is formed in the die cavity insert; the feeding control mechanism is arranged, so that feeding control during bottle blank injection molding can be automatically performed, the enough material for each bottle blank is ensured, the forming pressure is regulated, the product defects are reduced, and the product quality is improved.

Description

Bottle blank processing die capable of automatically controlling feeding quantity

Technical Field

The invention belongs to the technical field of mold processing, and particularly relates to a bottle blank processing mold capable of automatically controlling feeding quantity.

Background

The bottle blank is formed by filling raw materials into a gun mold of a mold at a specific temperature and pressure through injection molding, is formed under the working condition of the injection molding, is a semi-finished product of an intermediate through injection molding, and is then formed into a terminal product through blow molding. The bottle blank is an injection-molded product, is an intermediate, is subjected to blow molding processing to form a terminal product, and the terminal product comprises plastic bottles, engine oil barrels, cosmetic boxes, shampoo plastic bottles, spray bottles and other packaging containers, thus being a necessary product for daily life demands of people.

The injection mold is a tool for producing plastic products; is also a tool for endowing plastic products with complete structure and precise dimensions. Injection molding is a process used in mass production of parts of complex shape. Specifically, a heated and melted material is injected into a mold cavity under high pressure, and a molded product is obtained after cooling and solidification.

The structure of the mold may vary widely due to the variety and properties of the plastic, the shape and structure of the plastic article, the type of the injection machine, etc., but the basic structure is uniform. The mould mainly comprises a pouring system, a temperature regulating system, a forming part and a structural part. The pouring system and the forming part are parts which are in direct contact with the plastic and change along with the plastic and the product, are the most complex parts in the plastic mould, have the greatest change and require the parts with the highest processing finish and precision; in order to improve productivity, a mold multi-cavity mechanism is generally adopted in the existing bottle blank processing mold in the market, and the requirement of a runner design in a mold multi-cavity mold structure degree mold is extremely high, because the runner length in the multi-cavity mold is complicated, the flow resistance is increased, the flow speed of a material flow in the runner is slowed down, the cavity 19 far away from the sprue 114 often generates forming defects due to insufficient materials or defects such as shrinkage cavity and the like due to insufficient injection pressure, and the processing production is greatly influenced.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a bottle blank processing die capable of automatically controlling the feeding quantity.

In order to achieve the above purpose, the present invention adopts the following technical scheme: the bottle blank processing die capable of automatically controlling feeding quantity comprises a movable die plate, a core plate fixedly connected with the movable die plate, a plurality of cores fixedly connected with the core plate, a plurality of guide columns fixedly connected with the core plate, a stripper plate slidingly connected with the guide columns, a cavity plate slidingly connected with the guide columns, a guide sleeve detachably mounted on the cavity plate, a cavity mounting hole formed in the cavity plate, a plurality of cavity inserts detachably mounted on the mounting hole, a cavity formed in the cavity insert, a mounting groove formed in the cavity plate, a control plate detachably mounted on the mounting groove, a fixed die plate formed in the upper portion of the cavity plate, a sprue bush detachably mounted on the fixed die plate, a sprue bush formed in the sprue bush, an automatic unloading structure formed in the stripper plate, a feeding quantity control mechanism formed in the control plate and a pressure control mechanism formed in the fixed die plate; the automatic discharging structure is characterized by comprising a bottleneck forming cavity arranged on the discharging plate, a baffle forming cavity arranged on the discharging plate, a reset bin arranged below the discharging plate, tension springs arranged below the reset bin, discharging bins arranged on two sides of the cavity plate, a sliding hole arranged on the lower part of the discharging bin, a discharging rod fixedly connected with the sliding hole and fixedly connected with the discharging plate and a baffle fixedly connected with the discharging rod; when the injection molding processing of bottle blanks is carried out, a mould is arranged on an injection molding machine, material flows are extruded into the mould through a screw extruder, a feeding amount control mechanism automatically distributes materials, a plurality of cavities are gradually filled and pressurized to be molded, after pressure maintaining for a period of time, the mould opening action is carried out, under the action of the press, a movable mould plate drives a core plate to move to one side relative to the fixed mould plate, under the action of a tension spring, a stripper plate moves together with the core plate, the molded bottle blanks can be wrapped on the core plate due to the thermal expansion and contraction action of the materials and the core plate, meanwhile, the core plate drives a stripper rod to slide along a sliding hole, when the core plate and the cavity plate are opened to a certain degree, a flange is contacted with the bottom of a stripper bin, the stripper rod cannot slide, the core plate drives the core plate and the bottle blanks wrapped on the core plate to relatively move, the bottle blanks receive the blocking action of the stripper plate and gradually fall off and separate from the core plate, and the stripper plate is buckled with the core plate again under the action of the tension spring when the mould is closed; the automatic unloading can reduce the die opening time, improve the continuous working efficiency, and meanwhile, compared with the traditional mechanical arm unloading, the automatic unloading device has the advantages of simple structure and lower cost; each mold core and each mold cavity are independently modularized, so that the maintenance and the replacement are convenient; .

The feeding amount control mechanism comprises a distribution hole fixedly connected to the control board, a diversion hole communicated with the distribution hole, a vertical runner arranged on the cavity plate, a pouring gate arranged at the bottom of the cavity, a circular runner arranged at the lower part of the control board, a transverse runner communicated with the vertical runner and the circular runner, a distribution plate rotatably connected to the control board, an extrusion track fixedly connected to the distribution plate and slidingly connected to the circular runner, a moving groove arranged on the extrusion track, a conversion track slidingly connected to the moving groove, a conversion block fixedly connected to the conversion track, a return hole arranged at the rear side of the moving groove, a return spring arranged at the return hole, a feeding notch arranged on the extrusion track, a backstop mechanism arranged at the lower part of the conversion block and a stabilizing mechanism arranged at the upper part of the distribution plate; a temperature regulating mechanism is arranged at the lower part of the distribution plate; when injection molding is started, molten material flows enter the distribution holes through the sprue bush, further enter the annular pouring gate through the diversion holes, then enter the vertical pouring gate through the horizontal pouring gate, finally start filling the cavities through the vertical pouring gate and the pouring gate, and as the feeding gap can only fill one cavity at a time, the material flows are concentrated in flow direction, the flow speed is higher, the heat loss is less, the filling speed is high, the filling pressure is sufficient, and the bottle blank molding quality is better.

The non-return mechanism comprises a non-return groove arranged at the lower side of the conversion block, a non-return block connected in the non-return groove in a sliding way, a pushing surface arranged at the rear side of the non-return groove and a non-return surface arranged in the non-return groove; when the material pressure in the feeding notch increases after the filling of one cavity is finished, the material pressure in the annular pouring gate increases, the feeding notch has a tendency of volume expansion, the return spring is compressed, the conversion rail drives the conversion block to rotate anticlockwise, the extrusion rail rotates clockwise, the reverse block contacts with the reverse stop surface when the conversion rail rotates, the reverse block receives the extrusion action of the reverse stop surface, friction is generated on the upper part of the cavity plate, the conversion rail stops rotating, the feeding notch further expands, the extrusion rail rotates clockwise, when the feeding notch is communicated with the next cross gate, the material flow in the feeding notch starts to fill the next cavity, the material pressure in the feeding notch is reduced, the return spring is released, the conversion rail is pushed to rotate clockwise, the reverse block contacts with the pushing surface, no resistance is generated, the conversion block rotates along the annular pouring gate, the filled cross gate is blocked, the original pressure is still kept in the cavity, and the circulation is continued until all cavities are completely filled; the automatic sequential filling of a plurality of cavities is realized through the distribution plate, the one-way expansion of the feeding cooling port can be ensured by the non-return mechanism, and the filling of the cavities is automatically converted, so that the whole injection filling is logically optimized, and the plurality of cavities are independently filled, compared with the existing runner distribution filling, the filling speed is high, the filling pressure is sufficient, the pressure and heat loss of a material flow in a long runner can be greatly reduced, the filling quality is improved, the use load of an injection molding machine is reduced, the service life is prolonged, and the energy consumption is reduced; the extrusion track can limit the position of the feeding notch, automatically convert and fill the cavity by utilizing the change of the filling pressure, and constantly maintain the pressure of the filled cavity.

The stabilizing mechanism comprises a radiation groove, a stabilizing strip, clamping teeth, a plurality of clamping grooves, guide posts and a pressurizing spring, wherein the radiation groove is arranged at the upper part of the distribution plate, the stabilizing strip is connected with the radiation groove in a sliding mode, the clamping teeth are fixedly connected with the stabilizing strip, the clamping grooves are formed in the fixed die plate, the guide posts are fixedly connected with the stabilizing strip, and the pressurizing spring is connected with the guide posts in a sliding mode; the positions of the clamping grooves are in one-to-one correspondence with the positions of the sprue; the pressure pushes the distribution plate to rotate and simultaneously drives the stabilizing strip to rotate, the pressurizing spring is compressed, when the end part of the extrusion track rotates to the pouring gate of the runner, the pressurizing spring is released to push the stabilizing strip to move forwards, the clamping teeth are buckled with the clamping grooves, and the extrusion track stops rotating; through the buckling effect of the stabilizing strip and the clamping groove, the rotation can be stopped in time when the extrusion track reaches each horizontal gate, and the stability of the distribution plate during filling can be obviously improved.

The pressure control mechanism comprises a pressurizing block which is connected to the rear part of the radiation groove in a sliding way, a rotating groove which is arranged on the fixed die plate, a supporting rod which is fixedly connected with the distribution plate, a pressurizing sleeve which is connected to the supporting rod in a sliding way, a pressurizing rod which is hinged to the pressurizing block and the pressurizing sleeve, a pressurizing plate which is connected to the rotating groove in a sliding way, a pressurizing hole which is arranged on the fixed die plate, a pressurizing screw rod which is rotatably connected to the pressurizing hole, and a pressurizing knob which is fixedly connected to the upper part of the pressurizing screw rod; the combination strength of the stabilizing strip and the clamping groove directly determines the filling pressure of the material in the cavity; the pressurizing knob is rotated to drive the pressurizing screw rod to rotate, the pressurizing screw rod descends, the pressurizing plate is extruded to descend, the pressurizing sleeve slides downwards along the supporting rod, the pressurizing block is pushed to slide forwards by the pressurizing rod to extrude the pressurizing spring, the deformation degree of the pressurizing spring is increased, the pressure is increased, the bonding strength of the stabilizing strip and the clamping groove is increased, the pressure required for pushing the extruding track to move is increased, and meanwhile, the filling pressure of each cavity is increased; the filling pressure can be manually adjusted through the pressurizing mechanism so as to meet the requirements of different products, and the applicability and the universality of the equipment are improved.

The lower surface of the cavity block is higher than the lower surface of the cavity plate; the height of the insert is higher than that of the cavity plate, the real parting surface is the joint surface of the insert, the size of the insert is small, the parting surface is small, the machining is easier, the surface roughness requirements of the cavity plate and the core plate are low, and the machining cost of the die can be saved.

In summary, the invention has the following advantages: the automatic sequential filling of a plurality of cavities is realized through the distribution plate, the one-way expansion of the feeding cooling port can be ensured by the non-return mechanism, and the filling of the cavities is automatically converted, so that the whole injection filling is logically optimized, and the plurality of cavities are independently filled, compared with the existing runner distribution filling, the filling speed is high, the filling pressure is sufficient, the pressure and heat loss of a material flow in a long runner can be greatly reduced, the filling quality is improved, the use load of an injection molding machine is reduced, the service life is prolonged, and the energy consumption is reduced; the extrusion track can limit the position of the feeding notch, automatically convert and fill the cavity by utilizing the change of the filling pressure, and constantly maintain the pressure of the filled cavity, thereby changing the traditional one-die multi-cavity filling mode.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a cross-sectional perspective view of fig. 2 taken along A-A.

Fig. 4 is an enlarged view at a in fig. 3.

Fig. 5 is an enlarged view at B in fig. 4.

Fig. 6 is a perspective view of the pressing rail in the present invention.

Fig. 7 is an enlarged view at C in fig. 6.

Fig. 8 is a perspective view of a stripper plate in accordance with the present invention.

Fig. 9 is an exploded view of the present invention.

Detailed Description

In order to better understand the technical solutions of the present invention, the following description will clearly and completely describe the technical solutions of the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1 to 9, a bottle blank processing mold capable of automatically controlling feeding amount comprises a movable mold plate 1, a mold core 12 plate 11, a mold core 12, a guide post 13, a discharge plate 14, a cavity plate 15, a guide sleeve 16, a mounting hole, a cavity insert 18, a cavity 19, a mounting groove 110, a control plate 111, a fixed mold plate 112, a sprue bush 113, a sprue 114, an automatic discharge structure 2, a feeding amount control mechanism 3 and a pressure control mechanism 4; the core 12 plate 11 is fixedly connected to the movable mould plate 1; the core 12 is fixedly connected to the core 12 plate 11 in total; the guide posts 13 are fixedly connected to the core 12 plate 11 in total; the stripper plate 14 is slidably connected to the guide post 13; the cavity plate 15 is slidably connected to the guide post 13; the guide sleeve 16 is detachably arranged on the cavity plate 15; the cavity mounting hole 17 is arranged on the cavity plate 15; eight cavity blocks 18 are detachably mounted in the mounting holes; the cavity 19 is provided in the cavity block 18; the mounting groove 110 is formed in the cavity plate 15; the control board 111 is detachably mounted in the mounting groove 110; the fixed die plate 112 is arranged at the upper part of the cavity plate 15; the sprue bush 113 is detachably mounted on the fixed die plate 112; the sprue 114 is arranged in the sprue bush 113; the automatic discharging structure 2 is arranged on the discharging plate 14; the feeding amount control mechanism 3 is arranged on the control board 111; the pressure control mechanism 4 is arranged on the fixed template 112; the automatic discharging structure 2 comprises a bottle mouth forming cavity 21, a baffle forming cavity 22, a reset bin 23, a tension spring 24, a discharging bin 25, a sliding hole 26, a discharging rod 27 and a flange 28; the bottleneck forming cavity 21 is arranged on the stripper plate 14; the baffle forming cavity 22 is arranged on the stripper plate 14; the reset bin 23 is arranged below the stripper plate 14; the tension spring 24 is arranged below the reset bin 23; the discharging bins 25 are arranged on two sides of the cavity plate 15; the sliding hole 26 is arranged at the lower part of the discharging bin 25; the discharging rod 27 is fixedly connected to the sliding hole 26 and fixedly connected to the discharging plate 14; the flange 28 is fixedly connected to the discharge rod 27.

The feeding amount control mechanism 3 comprises a distribution hole 31, a diversion hole 32, a sprue 33, a pouring gate 34, a ring sprue 35, a cross sprue 36, a distribution plate 37, an extrusion track 38, a moving groove 39, a switching track 310, a switching block 311, a return hole 312, a return spring 313, a feeding gap 314, a backstop mechanism 315 and a stabilizing mechanism 316; the distribution hole 31 is fixedly connected to the control board 111; the diversion holes 32 are communicated with the distribution holes 31; the sprue 33 is arranged on the cavity plate 15; the pouring gate 34 is arranged at the bottom of the cavity 19; the ring runner 35 is arranged at the lower part of the control plate 111; the cross runner 36 communicates the sprue 33 with the ring runner 35; the distribution plate 37 is rotatably connected to the control plate 111; the extrusion track 38 is fixedly connected to the distribution plate 37 and slidingly connected to the ring runner 35; the moving groove 39 is arranged on the extrusion track 38; the switching rail 310 is slidably coupled to the moving slot 39; the conversion block 311 is fixedly connected to the conversion track 310; the return hole 312 is arranged at the rear side of the moving groove 39; the return spring 313 is arranged in the return hole 312; the feeding notch 314 is arranged on the extrusion track 38; the non-return mechanism 315 is arranged at the lower part of the conversion block 311; the stabilizing mechanism 316 is arranged at the upper part of the distributing plate 37; a temperature adjusting mechanism is arranged at the lower part of the distribution plate 37.

The check mechanism 315 includes a check groove 317, a check block 318, a push surface 319, and a check surface 320; the non-return groove 317 is arranged at the lower side of the conversion block 311; the check block 318 is slidably connected in the check groove 317; the pushing surface 319 is arranged at the rear side of the non-return groove 317; the check surface 320 is disposed in the check groove 317.

The stabilizing mechanism 316 comprises a radiation groove 321, a stabilizing strip 322, a latch 323, a clamping groove 324, a guide post 325 and a pressurizing spring 326; the radiation groove 321 is arranged at the upper part of the distribution plate 37; the stabilizing strip 322 is slidably connected to the radiating groove 321; the latch 323 is fixedly connected to the stabilizing strip 322; eight clamping grooves 324 are formed in the fixed die plate 112; the guide post 325 is fixedly connected to the stabilizer bar 322; the booster spring 326 is slidably coupled to the guide post 325; the positions of the clamping grooves 324 are in one-to-one correspondence with the positions of the sprue 33.

The pressure control mechanism 4 comprises a pressurizing block 41, a rotating groove 42, a supporting rod 43, a pressurizing sleeve 44, a pressurizing rod 45, a pressurizing plate 46, a pressurizing hole 47, a pressurizing screw 48 and a pressurizing knob 49; the pressurizing block 41 is slidably connected to the rear of the radiation groove 321; the rotating groove 42 is arranged on the fixed template 112; the supporting rod 43 is fixedly connected to the distribution plate 37; the pressurizing sleeve 44 is slidably connected to the supporting rod 43; the pressurizing rod 45 is hinged with the pressurizing block 41 and the pressurizing sleeve 44; the supercharging plate 46 is slidably connected to the rotation groove 42; the pressurizing hole 47 is arranged on the fixed template 112; the pressurizing screw 48 is rotatably connected to the pressurizing hole 47; the pressurizing knob 49 is fixedly connected to the upper portion of the pressurizing screw 48.

The lower surface of the cavity block 18 is higher than the lower surface of the cavity plate 15; .

The specific working process is as follows:

when the injection molding processing of bottle blanks is carried out, a mould is arranged on an injection molding machine, a material flow is extruded into the mould through a screw extruder, a material is automatically distributed by a feeding quantity control mechanism 3, a plurality of cavities 19 are gradually filled and pressurized for molding, after a period of pressure maintaining, the mould opening action starts, under the action of the press, a movable mould plate 1 drives a mould core 12 plate 11 to move to one side relative to a fixed mould plate 112, under the action of a tension spring 24, a stripper plate 14 moves together with the mould core 12 plate 11, the molded bottle blanks can be wrapped on the mould core 12 due to the thermal expansion and contraction actions of the material and the mould core 12, meanwhile, the mould core 12 plate 11 drives a stripper rod 27 to slide along a sliding hole 26, when the mould core 12 plate 11 and a cavity plate 15 are opened to a certain extent, a baffle edge 28 contacts the bottom of a stripper bin 25, the stripper rod 27 cannot slide, the stripper plate 14 stops the synchronous movement with the mould core 12 plate 11, the mould core 12 plate 11 drives the mould core 12 and the bottle blanks wrapped on the mould core 12 to move relatively to one side relative to the material receiving plate 14, the bottle blanks are gradually separated from the mould core 12 plate 12 under the action of the tension spring 24, and the stripper plate is completely separated, and the mould 11 is buckled with the mould core 12 plate 14 again under the action of the mould clamping plate 24;

when injection molding is started, molten material flows enter the distribution hole 31 through the sprue bush 113, further enter the annular runner 35 through the diversion hole 32, then enter the vertical runner 33 through the horizontal runner 36, finally start to fill the cavity 19 through the vertical runner 33 and the sprue 34, and as the material loading notch 314 can only fill one cavity 19 at a time, the material flows are concentrated, the flow speed is higher, the heat loss is less, the filling speed is high, the filling pressure is sufficient, and the bottle blank molding quality is better.

When the material in the feeding notch 314 is piled up after the filling of one cavity 19 is finished, the material pressure in the annular pouring gate 35 is increased, the feeding notch 314 has a trend of volume expansion, the return spring 313 compresses, the conversion rail 310 drives the conversion block 311 to rotate anticlockwise, the extrusion rail 38 rotates clockwise, when the conversion rail 310 rotates, the check block 318 contacts with the check surface 320, the check block 318 receives the extrusion action of the check surface 320, friction is generated on the upper part of the cavity plate 15, the conversion rail 310 stops rotating, the feeding notch 314 is further enlarged, the extrusion rail 38 rotates clockwise, when the feeding notch 314 is communicated with the next cross pouring gate 36, the material flow piled up in the feeding notch 314 starts to fill the next cavity 19, the material pressure in the feeding notch 314 is reduced, the return spring 313 releases, the conversion rail 310 is pushed to rotate clockwise, the check block 318 contacts with the pushing surface 319, no resistance is generated, the conversion block 311 rotates along the annular pouring gate 35, the cross pouring gate 36 which is finished is blocked, the original pressure in the cavity 19 is still maintained, and the circulation is sequentially carried out until all cavities 19 are completely filled;

the pressure pushes the distribution plate 37 to rotate and simultaneously drives the stabilizing strip 322 to rotate, the pressurizing spring 326 compresses, when the end part of the extrusion track 38 rotates to the gate 34 of the runner 36, the pressurizing spring 326 releases to push the stabilizing strip 322 to move forwards, the clamping teeth 323 are buckled with the clamping grooves 324, and the extrusion track 38 stops rotating; through the snap-fit action of the stabilizing strip 322 and the snap-fit groove 324, the rotation can be stopped in time when the extrusion track 38 reaches the mouth of each runner 36, and the stability of the distribution plate 37 can be significantly improved during filling.

The pressurizing knob 49 is rotated to drive the pressurizing screw 48 to rotate, under the action of pressurizing threads, the pressurizing screw 48 descends, the pressurizing plate 46 is extruded, the pressurizing plate 46 descends, the pressurizing sleeve 44 slides downwards along the supporting rod 43, the pressurizing block 41 is pushed to slide forwards through the pressurizing rod 45, the pressurizing spring 326 is extruded, the deformation degree of the pressurizing spring 326 is increased, the pressure is increased, the bonding strength of the stabilizing strip 322 and the clamping groove 324 is increased, the pressure required for pushing the extruding track 38 to move is increased, and meanwhile, the filling pressure of each cavity 19 is increased.

While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides an automatic bottle base mold processing of control feed quantity, includes movable mould board (1), fixed connection in core (11) of movable mould board (1), fixed connection in a plurality of cores (12) of core, fixed connection in a plurality of guide pillars (13) of core (11), sliding connection in stripper plate (14) of guide pillar (13), sliding connection in cavity plate (15) of guide pillar (13), removable install in guide pin bushing (16) of cavity plate (15), locate cavity mounting hole (17) of cavity plate (15), removable install in a plurality of cavity inserts (18) of mounting hole, locate cavity (19) of cavity insert (18), locate in mounting groove (110) of cavity plate (15), removable install in control panel (111) of mounting groove (110), locate fixed die plate (112) on cavity plate (15), removable install in runner cover (113) of guide pillar (112), removable install in cavity cover (113), the automatic sprue cover (14) of sprue cover (113) are located on the pressure control structure (2) of stripper plate (114) of cavity plate (4) is located on control panel (2); the automatic discharging structure (2) is characterized by comprising a bottleneck forming cavity (21) arranged on the discharging plate (14), a baffle forming cavity (22) arranged on the discharging plate (14), a reset bin (23) arranged below the discharging plate (14), tension springs (24) arranged below the reset bin (23), discharging bins (25) arranged on two sides of the cavity plate (15), sliding holes (26) arranged on the lower parts of the discharging bins (25), discharging rods (27) fixedly connected to the sliding holes (26) and fixedly connected to the discharging plate (14) and flanges (28) fixedly connected to the discharging rods (27);

the feeding amount control mechanism (3) comprises a distribution hole (31) fixedly connected to the control plate (111), a diversion hole (32) communicated with the distribution hole (31), a vertical runner (33) arranged on the cavity plate (15), a pouring gate (34) arranged at the bottom of the cavity (19), a circular runner (35) arranged at the lower part of the control plate (111), a transverse runner (36) communicated with the vertical runner (33) and the circular runner (35), a distribution plate (37) rotatably connected to the control plate (111), a pressing track (38) fixedly connected to the distribution plate (37) and connected to the circular runner (35) in a sliding manner, a moving groove (39) arranged on the pressing track (38), a switching track (310) connected to the moving groove (39) in a sliding manner, a switching block (311) fixedly connected to the switching track (310), a return hole (312) arranged at the rear side of the moving groove (39), a return spring (313) arranged at the return hole (312), a feeding notch (311) arranged on the pressing track (38) and a reversing mechanism (315) arranged at the upper switching block (314) and the lower notch (316) of the pressing track (38). The lower part of the distribution plate (37) is provided with a temperature adjusting mechanism.

2. The preform processing die for automatically controlling a feeding amount according to claim 1, wherein the check mechanism (315) comprises a check groove (317) provided on a lower side of the conversion block (311), a check block (318) slidably connected to the check groove (317), a pushing surface (319) provided on a rear side of the check groove (317), and a check surface (320) provided in the check groove (317).

3. The preform processing die capable of automatically controlling feeding amount according to claim 2, wherein: the stabilizing mechanism (316) comprises a radiation groove (321) arranged at the upper part of the distribution plate (37), a stabilizing strip (322) connected with the radiation groove (321) in a sliding way, a latch (323) fixedly connected with the stabilizing strip (322), a plurality of clamping grooves (324) arranged on the fixed die plate (112), a guide post (325) fixedly connected with the stabilizing strip (322) and a pressurizing spring (326) connected with the guide post (325) in a sliding way; the positions of the clamping grooves (324) are in one-to-one correspondence with the positions of the sprue (33).

4. A preform processing die for automatically controlling a feeding amount according to claim 3, wherein: the pressure control mechanism (4) comprises a pressurizing block (41) which is slidably connected to the rear portion of the radiation groove (321), a rotating groove (42) which is arranged on the fixed die plate (112), a supporting rod (43) which is fixedly connected to the distribution plate (37), a pressurizing sleeve (44) which is slidably connected to the supporting rod (43), a pressurizing rod (45) which is hinged to the pressurizing block (41) and the pressurizing sleeve (44), a pressurizing plate (46) which is slidably connected to the rotating groove (42), a pressurizing hole (47) which is arranged on the fixed die plate (112), a pressurizing screw (48) which is rotatably connected to the pressurizing hole (47) and a pressurizing knob (49) which is fixedly connected to the upper portion of the pressurizing screw (48).

5. The preform processing die capable of automatically controlling feeding amount according to claim 4, wherein: the lower surface of the cavity block (18) is higher than the lower surface of the cavity plate (15).