CN219076383U - Front mould assembly and deep hole plate mould - Google Patents

Abstract

The utility model discloses a front mold assembly, which comprises a middle insert and an outer insert sleeved outside the middle insert, wherein the outer insert comprises an insert mounting part and an insert skirt edge, the middle insert is positioned in the insert mounting part, a middle cavity surface is arranged on the middle insert, and a front mold cavity is formed between the middle cavity surface and the inner side surface of the insert skirt edge; the outer cooling runner is arranged in the outer insert and comprises a side wall cooling runner arranged in the skirt edge of the insert, and the insert mounting part is provided with a first side wall runner and a second side wall runner which are communicated with the side wall cooling runner. The utility model also discloses a deep hole plate die, which comprises a die holder, wherein the front die assembly is arranged on the die holder. The front die assembly and the deep hole plate die can effectively improve the cooling effect.

Description

Front mould assembly and deep hole plate mould

Technical Field

The utility model belongs to the technical field of injection molding, and particularly relates to a front die assembly and a deep hole plate die.

Background

The deep pore plate is based on the appearance size of a common micro pore plate, and the depth of the pore is increased, so that the purpose of increasing the volume of each pore is achieved. The deep hole plate is mainly used in the fields of medicine, biology and the like. The existing deep hole plate is mostly produced by adopting a mold for injection molding. The deep hole plate comprises 96 hole plates, 384 hole plates and other models, has the structural characteristics of complex product structure, multiple and deep hole (reagent cavity) numbers, and the existing injection mold can meet the production requirements of the deep hole plates to a certain extent, but still has the following problems:

1) The front die assembly and the rear die assembly in the injection die are damaged by abrasion and the like after long-time use, and in the existing injection die, the whole part or assembly is often required to be replaced, so that the problem of high replacement cost exists;

2) Because the deep hole plate product has the characteristics of more glue positions and thickness in the injection molding process, the exhaust and cooling of the injection mold become a great difficulty in the industry; if the air cannot be exhausted and cooled in time, the problems of weld marks, burning, scalding and the like of products caused by trapped air can be caused.

Disclosure of Invention

In view of the above, an object of the present utility model is to provide a front mold assembly and a deep hole plate mold capable of effectively improving cooling effect.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model firstly provides a front die assembly, which comprises a middle insert and an outer insert sleeved outside the middle insert, wherein the outer insert comprises an insert mounting part and an insert skirt edge, the middle insert is positioned in the insert mounting part, a middle cavity surface is arranged on the middle insert, and a front die cavity is formed between the middle cavity surface and the inner side surface of the insert skirt edge;

the outer cooling runner is arranged in the outer insert and comprises a side wall cooling runner arranged in the skirt edge of the insert, and the insert mounting part is provided with a first side wall runner and a second side wall runner which are communicated with the side wall cooling runner.

Further, straight-line flow channels are arranged in the skirt edge of the insert at intervals, and the straight-line flow channels are connected end to form a serpentine side wall cooling flow channel.

Further, a distance between an inner side surface of the insert skirt and an inner side surface of the insert mounting portion is larger than zero, a side cavity surface is formed between the insert mounting portion and the insert skirt, and a front mold cavity surface is formed between the side cavity surface and the middle cavity surface in a flush manner.

Further, the mold further comprises a front flow passage plate, wherein the middle insert and the outer insert are installed on the front flow passage plate, and a first front flow passage communicated with the first side wall flow passage and a second front flow passage communicated with the second side wall flow passage are arranged in the front flow passage plate.

Further, the outer insert is arranged in a split mode to form at least two outer inserts, and the outer cooling flow passage is arranged in each outer insert.

Further, the outer inserts are disposed in one-to-one correspondence with each side of the intermediate insert.

Further, the first front overflow flow channel and the second front overflow flow channel are arranged in one-to-one correspondence with each external cooling flow channel; or, the first front flow passage and the second front flow passage are both set as one, and a connecting passage for connecting all the external cooling passages into a peripheral cooling passage is also arranged in the front flow plate, and two ends of the peripheral cooling passage are respectively communicated with the first front flow passage and the second front flow passage.

Further, a glue feeding groove and a glue feeding groove are formed in the insert skirt edge, and the depth directions of the glue feeding groove and the glue feeding groove are both in the longitudinal direction perpendicular to the middle cavity surface; the linear flow channel is arranged along the longitudinal direction and is staggered with the glue feeding groove and the glue feeding groove.

Further, an intermediate cooling flow passage is arranged in the intermediate insert, and a third front flow passage and a fourth front flow passage which are respectively connected with two ends of the intermediate cooling flow passage are arranged in the front flow passage.

Further, the intermediate cooling runner is arranged in a serpentine pattern within the intermediate insert.

Further, the outer insert is made of beryllium copper or steel.

The deep hole plate die comprises a die holder, wherein the front die assembly is mounted on the die holder.

The utility model has the beneficial effects that:

according to the front mold assembly, the outer cooling runner is processed in the peripheral insert, so that the outer cooling runner can cover the whole insert skirt edge, the side wall cooling runner is formed in the insert skirt edge, and the first side wall runner and the second side wall runner are processed in the insert mounting part and connected with the side wall cooling runner to realize circulation of cooling medium, so that the whole insert skirt edge can serve as a cooling surface, and a glue position contacted with the insert skirt edge is sufficiently cooled.

The front mold assembly is divided into the middle insert and the peripheral inserts, and the peripheral inserts are divided into at least two outer inserts, so that corresponding parts which need to be replaced or maintained can be conveniently detached after the mold is used for a long time, and the whole front mold assembly does not need to be replaced integrally, so that later maintenance and replacement are facilitated;

by arranging the intermediate cooling runner in the intermediate insert, the bottoms of the reagent chambers of the deep-hole plate can be sufficiently cooled.

Drawings

In order to make the objects, technical solutions and advantageous effects of the present utility model more clear, the present utility model provides the following drawings for description:

FIG. 1 is a schematic structural diagram of an embodiment of a deep hole plate injection mold according to the present utility model, and is a state diagram during mold closing;

FIG. 2 is a state diagram of a deep-hole plate injection mold at the time of mold opening;

FIG. 3 is a perspective view of a deep-hole plate injection mold at mold opening;

fig. 4 is a perspective view of the lower die at the time of die opening;

fig. 5 is a perspective view of the support plate;

FIG. 6 is a schematic view of a pump nozzle;

FIG. 7 is a perspective view of a pump nozzle;

FIG. 8 is a schematic structural view of an upper die assembly;

FIG. 9 is a schematic diagram of the structure of a deep-hole plate product;

FIGS. 10-13 are schematic structural views of an external cooling gallery disposed both within an insert skirt and an insert mounting portion;

FIG. 14 is a schematic view of the structure of the intermediate insert;

FIG. 15 is a schematic view of the structure of the rear mold core;

FIG. 16 is a schematic view of the structure of a rear mold insert;

FIG. 17 is a perspective view of a rear mold insert;

FIG. 18 is a schematic structural view of a cooling runner within a deep-hole plate injection mold;

fig. 19 is a cross-sectional view of the lower die;

FIG. 20 is a schematic structural view of a flexible ejection mechanism;

fig. 21 is a perspective view of a flexible ejection mechanism.

Reference numerals illustrate:

1-deep hole plate product; 2-side walls; 3-reagent chambers; 4-a first reinforcing rib; 5-a second reinforcing rib;

10-upper die;

11-an upper die holder; 111-an upper die guide hole; 112-lining; 113-a first square positioning groove;

12-front flow plate; 121-a first front flow channel; 122-a second front flow channel; 123-connecting the flow channels; 124-a third front flow channel; 125-fourth front flow channel;

13-an intermediate insert; 131-an intermediate cavity surface; 132—an intermediate cooling runner;

14-a peripheral insert; 141-insert mounting portion; 142-insert skirt; 1421-side cavity surface; 143-a glue feeding groove; 144-glue running grooves; 1441-an outer molding groove; 145-outer insert; 148-sidewall cooling flow channels; 1491-a first sidewall flow channel; 1492-a second sidewall flow channel;

15-a glue injection groove;

16-pump nozzle; 161-diverter blade; 1611-a diverter notch; 162-sprue channel; 163-shunt grooves; 164-feeding groove; 165-pump nozzle connection; 166-pump nozzle conduit;

30-lower die;

31-a base; 311-through holes;

32-a supporting seat; 321-guide posts; 322-square guide post; 323-a second square positioning block; 324-fixing columns; 3241-a limit head; 3242-return spring; 325-through holes;

33-pushing plate; 331-rear mold cavity; 332-guiding through holes; 333-lining; 334-first square positioning block; 335-square guide grooves; 336-guiding positioning blocks; 337-a second square positioning groove; 338-reset through holes; 339-rear mold through hole;

34-a rear mold core; 341-a posterior model cavity; 342-pouring nozzle; 343-a glue-diving port; 344-rear mold cooling channels; 345-cavity bottom hole;

35-honeycomb panel; 351-mounting through holes; 352-first variable-size section; 353-a second variable-size section;

36-a first flow-through plate; 361-a first post-flow channel;

37-a second flow-through plate; 371-a second post-flow path;

38-a rear mold insert; 381-cooling holes; 382-cooling tube; 383-return channels; 384-primary exhaust slots; 385-secondary vent; 386-hanging stand;

39—a flexible ejection mechanism; 391-sleeve; 3911-connecting through holes; 3912-thimble through holes; 392-top plate; 393-connecting block; 394-connecting shaft; 395-cover plate; 396-thimble; 397-elastic element.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to limit the utility model, so that those skilled in the art may better understand the utility model and practice it.

As shown in fig. 1-2, the deep-hole plate injection mold of the present embodiment includes an upper mold 10 and a lower mold 30.

Specifically, an upper die holder 11 is installed in the upper die 10, and a front die assembly is installed in the upper die holder 11. Specifically, the front die assembly of the present embodiment includes a front flow-through plate 12, a middle insert 13, and a peripheral insert 14 that is sleeved outside the middle insert 13. The front flow-through plate 12 is fixedly mounted on the upper die holder 11, and the intermediate insert 13 and the peripheral insert 14 are fixedly mounted on the front flow-through plate 12. Specifically, the bottom surface of the upper die holder 11 is provided with a mounting groove for mounting the front die assembly, and the front flow-through plate 12 is mounted at the bottom of the mounting groove. The upper die holder 11 of the embodiment is further provided with a glue injection channel, the glue injection channel comprises a glue injection groove 15, a glue injection runner is arranged at the bottom of the glue injection groove 15, and a sprue 16 is arranged in the glue injection runner.

The lower die 30 of the present embodiment includes a base 31, a support base 32 fixedly installed above the base 31, and a push plate 33 located above the support base 32. Specifically, a rear mold cavity 331 is provided in the push plate 33 of the present embodiment, a rear mold core 34 is installed in the rear mold cavity 331, and a rear mold cavity 341 is provided on the rear mold core 34. The back mold assembly is provided on the support base 32 corresponding to the back mold cavity 341. Specifically, the front membrane modules and the rear membrane modules are arranged in one-to-one correspondence, that is, the front membrane modules are arranged in correspondence with the rear mold cavities 341. The rear module of the present embodiment includes a honeycomb panel 35, and a first flow-through plate 36 and a second flow-through plate 37 are provided below the honeycomb panel 35. The honeycomb plate 35, the first flow-through plate 36 and the second flow-through plate 37 are fixedly mounted on the support base 32, and the second flow-through plate 37 is located between the first flow-through plate 36 and the honeycomb plate 35. Specifically, the glue injection channels are set corresponding to the rear mold cores 34, that is, when a plurality of rear mold cores 34 are installed on the push plate 33, a plurality of glue injection channels are set corresponding to each other in the upper mold base 11, and the number of rear mold cores 34 is set according to actual production needs, in this embodiment, the number of rear mold cores 34 installed on the push plate 33 is 1. Correspondingly, a pouring nozzle 342 is arranged on the rear mold core 34 corresponding to the glue pouring channel, and a glue-diving opening 343 communicated with the corresponding pouring nozzle 342 is arranged on the side wall of the rear mold cavity 341. The number of the rear mold cavities 341 arranged in each rear mold core 34 is at least one, the number of the rear mold cavities 341 is set according to actual production requirements, two rear mold cavities 341 are arranged in each rear mold core 34 in the embodiment, and corresponding pouring gates 342 are arranged between the two rear mold cavities 341 so as to be communicated with corresponding submerged-arc openings 343. Since the front mold assembly is disposed corresponding to the rear mold cavity 341 and the glue injection passage is disposed corresponding to the pouring nozzle 342, two front mold assemblies are mounted in the upper mold base 11, and the glue injection passage is also disposed between the two front mold assemblies.

Specifically, as shown in fig. 1-5, in order to realize guiding and positioning of the deep-hole plate injection mold during mold opening and closing, a guiding mechanism and a resetting mechanism are provided between the supporting seat 32 and the pushing plate 33 in the embodiment. The guiding mechanism is used for guiding the moving direction of the push plate 33, and the reset mechanism is used for enabling the push plate 33 to move towards the supporting seat 32 for reset. The guiding mechanism of the embodiment comprises guiding posts 321 arranged on a supporting seat 32, guiding through holes 332 are arranged in a pushing plate 33 in one-to-one correspondence with the guiding posts 321, the pushing plate 33 is in sliding fit with the guiding posts 321 through the guiding through holes 332, and a lining 333 is arranged in the guiding through holes 332. In this embodiment, a through hole for installing the guide post 321 is provided in the support base 32, a limiting head is provided at the lower end of the guide post 321, and the guide post 321 is pressed and fixed in the support base 32 by the base 31. Of course, the guide post 321 may be arranged in various ways, and will not be described in detail. In order to simplify the structure, in this embodiment, an upper die guide hole 111 is provided in the upper die holder 11 in cooperation with the guide post 321, and an inner liner 112 is also provided in the upper die guide hole 111. Thus, the upper die holder 11 and the push plate 33 can move under the guiding action of the guide post 321, so as to realize the actions of die opening and die closing. Specifically, in this embodiment, the guide posts 321 are disposed at four diagonal positions of the support base 32, that is, the number of the guide posts 321 is set to 4, and the number of the corresponding guide through holes 332 and the number of the upper mold guide holes 111 are set to 4. The guide post 321 can meet the movement guide of the push plate 33 and the upper die holder 11, and in order to achieve accurate positioning, the first square positioning block 334 and the first square positioning groove 113 for accurate positioning are provided between the push plate 33 and the upper die holder 11 in this embodiment. Specifically, the first square positioning block 334 of the present embodiment is disposed on the top surface of the push plate 33, and the first square positioning groove 113 is disposed on the bottom surface of the upper die holder 11. Of course, in other embodiments, the first square positioning block 334 may be disposed on the bottom surface of the upper die holder 11, and the first square positioning groove 113 is disposed on the top surface of the push plate 33, which is the same principle and will not be described again. In this embodiment, the number of first square positioning blocks 334 is 4, and the 4 first square positioning blocks 334 are respectively located at the middle edge positions of the 4 sides of the top surface of the push plate 33. In order to bear the falling force caused by the gravity of the upper die holder 11 and the push plate 33, the present embodiment is provided with a square guide post 322 and a square guide slot 335 for bearing the falling force between the support base 32 and the push plate 33. The square guide post 322 of the present embodiment is mounted on the supporting base 32, and the square guide groove 335 is disposed on the push plate 33. Of course, in other embodiments, the square guide post 322 may also be installed on the push plate 33, and the square guide slot 335 is disposed on the support base 32, which will not be described herein. The number of the square guide posts 322 in this embodiment is 4, the 4 square guide posts 322 are respectively arranged on two opposite sides of the support base 32, and the top surface of the square guide post 322 is located above the top surface of the support base 32. In a preferred embodiment of the present utility model, the side walls on both sides of Fang Daocao 335 are respectively provided with a guiding positioning block 336, and a guiding positioning track for matching with the square guide post 322 is formed between the two guiding positioning blocks 336. In order to achieve accurate positioning between the support base 32 and the push plate 33, the present embodiment is provided with a second square positioning block 323 and a second square positioning groove 337 for accurate positioning between the support base 32 and the push plate 33. In this embodiment, the second square positioning block 323 is disposed on the top surface of the supporting seat 32, and the second square positioning slot 337 is disposed on the bottom surface of the push plate 33. Of course, in other embodiments, the second square positioning block 323 may also be disposed on the bottom surface of the pushing plate 33, and the second square positioning slot 337 is disposed on the top surface of the supporting seat 32. In this embodiment, the reset mechanism includes a fixing post 324 and a reset through hole 338 which are respectively disposed on the supporting seat 32 and the push plate 33, the fixing post 324 extends into the reset through hole 338 and is provided with a limiting head 3241 thereon, and the fixing post 324 is sleeved with a reset spring 3242 between the limiting head 3241 and the push plate 33. In this embodiment, the fixing post 324 is a stud, and the fixing post 324 is fixedly mounted on the supporting post 32 through a screw hole formed on the supporting base 32, and the limiting head 3241 is a stud head disposed at one end of the stud. In the mold closing process, the upper mold base 11 is firstly contacted with the guide post 321 and moves downwards under the guide action of the guide post 321, and along with the continuous downward movement of the upper mold base 11, the accurate positioning and matching between the push plate 33 and the upper mold base 11 are realized through the first square positioning block 334 and the first square positioning groove 113 arranged between the push plate 33 and the upper mold base 11. Continuing to drive the upper die holder 11 to move downwards, the push plate 33 moves downwards synchronously along with the upper die holder 11 under the guiding action of the guide post 321, the square guide posts 322 and Fang Daocao 335 are matched to bear the falling force from gravity at first, and meanwhile, the second square positioning block 323 and the second square positioning groove 337 arranged between the push plate 33 and the support base 32 are combined to realize accurate positioning matching between the push plate 33 and the support base 32 and realize die assembly.

As shown in fig. 6-7, the sprue 16 of the present embodiment includes a sprue body and a splitter 161, a sprue runner 162 extending through two ends of the sprue body is provided in the sprue body, two ends of the sprue runner 162 are a feeding end and a discharging end, a splitter slot 163 for installing the splitter 161 is provided on an end surface of the sprue body corresponding to the feeding end, and when the splitter 161 is installed in the splitter slot 163, the splitter 163 divides the feeding end of the sprue runner 162 into two halves. Specifically, in this embodiment, the end surface of the sprue bushing body corresponding to the feeding end is provided with a feeding chute 164, and the depth of the diversion chute 163 is greater than the depth of the feeding chute 164. In order to prevent interference, the splitter plate 161 of the present embodiment is provided with a splitter plate notch 1611 matching the feed chute 164, and when the splitter plate 161 is mounted in the splitter chute 163, the surface of the splitter plate notch 1611 is flush with the wall of the feed chute 164 or slightly lower than the wall of the feed chute 164. In this embodiment, feed chute 164 is in the shape of a spherical recess. In this embodiment, the sprue body includes a sprue connector 165 and a sprue conduit 166 at two ends, respectively, the sprue conduit 166 is located in the glue injection channel, and the sprue connector 165 is located at the bottom of the glue injection groove 15; the feeding end of the sprue runner 162 is located at the end of the sprue connector 165, the discharging end of the sprue runner is located at the end of the sprue conduit 166, the diversion groove 163 is disposed on the end surface of the sprue connector 165, and at least one end of the diversion groove 163 penetrates through the sidewall of the sprue connector 165, so as to facilitate the installation and replacement of the diversion sheet 161. In this embodiment, the two ends of the shunt groove 163 respectively penetrate through the side wall of the pump nozzle connector 165. In this embodiment, the inner diameter of the sprue channel 162 gradually increases along the direction from the feeding end to the discharging end, the splitter 161 is parallel to the axis of the sprue channel 162, and the splitter 161 symmetrically divides the feeding end of the sprue channel 162 into two halves after the splitter 161 is installed in the splitter slot 163. Thus, in this embodiment, by arranging the splitter 161 in the sprue 16, the splitter 161 can divide and split the high-temperature molten stream into two halves, so that the gas in the center of the high-temperature molten stream can be released, and the problem of generating bubbles on the surface and inside of the injection molded product is solved. The splitter 161 divides and cuts the high-temperature molten stream into two halves, which can effectively prevent the sizing material from forming wire drawing at the runner and the nozzle opening of the injection molding machine. The diverter 161 can effectively block the injection molding machine nozzle during mold opening, and prevent glue overflow caused by the static pressure in the heating cylinder of the injection molding machine. Specifically, the thickness of the splitter 161 is 0.3-2mm, and the height of the splitter 161 is 3-10mm. In this embodiment, the thickness of the splitter 161 is 0.5mm, and the height of the splitter 161 is 5mm. In the thickness selection of the splitter 161, if the thickness of the splitter 161 is too thin, the defects of high processing difficulty, poor strength and easy damage exist, and the effects of bubble removal, wire drawing prevention and cold glue prevention cannot be achieved, if the thickness of the splitter 161 is too thick, the splitter 161 can block glue feeding, so that the injection molding pressure loss is too large, and the product filling is affected.

As shown in fig. 8, in the present embodiment, the peripheral insert 14 includes an insert mounting portion 141 and an insert skirt 142 that mates with the rear mold cavity 341, the intermediate insert 13 is located in the insert mounting portion 141, an intermediate cavity surface 131 is provided on the intermediate insert 13, and a front mold cavity is formed between the intermediate cavity surface 131 and an inner side surface of the insert skirt 142. The interval between the inner side surface of the insert skirt 142 and the inner side surface of the insert mounting portion 141 in this embodiment is larger than zero, and a side cavity surface 1421 is formed between the inner side surface of the insert mounting portion 141 and the inner side surface of the insert skirt 142, and the side cavity surface 1421 is flush with the intermediate cavity surface 131 and forms a front mold cavity surface with the intermediate cavity surface 131. Specifically, the insert skirt 142 is provided with a glue inlet 143 corresponding to the glue-diving port 343. Specifically, as shown in fig. 17, the glue-diving port 343 is disposed in the middle of one side wall of the rear mold cavity 341, and the glue-feeding slot 143 is correspondingly disposed in the middle of one side wall of the peripheral insert 14, so that glue can be more uniformly moved toward two sides. Through set up into gluey groove 143 on mold insert shirt rim 142 and the correspondence of diving gluey mouth 343, can make the sizing material flow through into gluey groove 143 when advancing gluey, reduce into gluey resistance, make the gluey position can be prioritized from the reagent chamber bottom of deep hole board to the positive glue that walks. In this embodiment, glue grooves 144 are provided on the insert skirt 143 at intervals. Because the deep hole plate product wraps up the whole circle Bao Jiaowei all around, if not set up and walk gluey groove 144 when gluing, glue material will walk gluey from whole circle thin gluey position all around to the product front, welds at product bottom or side at last, forms and anti-package, appears the product weld mark. In this embodiment, the depth directions of the glue feeding groove 143 and the glue feeding groove 144 are both in the longitudinal direction perpendicular to the middle cavity surface. In this embodiment, the bottom of the glue inlet slot 143 extends to the bottom of the front mold cavity; a space is reserved between the bottom of the glue running groove 144 and the bottom of the front mold cavity. Specifically, in this embodiment, the bottom of the glue running groove 144 is further provided with an outer molding groove 1441 located on the outer wall of the insert skirt 142, and the outer molding groove 1441 extends from the bottom of the glue running groove 144 to be flush with the cavity bottom of the front mold cavity. The outer shaping groove 1441 is used for forming a reinforcing rib on the inner side of the outer wall of the deep-hole plate product so as to enhance the structural strength of the outer wall of the deep-hole plate product. In this embodiment, the width of the glue feeding groove 143 is greater than or equal to the width of the glue feeding groove 144, and the difference between the width of the glue feeding groove 143 and the width of the glue feeding groove 144 is greater than or equal to 0.5mm. Specifically, the width of the glue feeding groove 143 is 1.6-2.5mm, and the width of the glue feeding groove 144 is 0.5-2.0mm. In this embodiment, the width of the glue inlet groove is 1.8mm. Specifically, as shown in fig. 9, a schematic structural diagram of a deep-hole plate product produced by using the deep-hole plate injection mold according to the embodiment is shown. The deep hole plate product 1 comprises a side wall 2, the side wall 2 being formed by the space between the insert skirt 142 and the rear mould cavity 341. The side wall 2 is provided with a plurality of reagent chambers 3, and the reagent chambers 3 are formed by spaces between a plurality of rear mold inserts 38 and the front mold cavity surface. The side wall is provided with reinforcing ribs, and the reinforcing ribs comprise a first reinforcing rib 4 formed by the glue feeding groove 143 and a second reinforcing rib 5 formed by the glue feeding groove 144.

The peripheral insert 14 of the present embodiment is provided with an external cooling flow channel, and the front flow-through plate 12 is provided with a first front flow-through channel 121 and a second front flow-through channel 122 which are communicated with the external cooling flow channel. The peripheral insert 14 is provided as a split of at least two outer inserts 145. In this embodiment, the outer inserts 145 are disposed in one-to-one correspondence with each side surface of the intermediate insert 13, that is, the peripheral insert 14 of this embodiment is separately disposed as 4 outer inserts 145, as shown in fig. 8. In this embodiment, an outer cooling channel is provided in each outer insert 145. Specifically, the thickness of the insert mounting portion 141 is greater than the thickness of the insert skirt 142, and the insert skirt 142 is thin-walled, and a runner cannot be provided in the insert skirt 142 by conventional machining. That is, in this embodiment, a new processing mode of 3D printing is adopted to process a runner in the insert skirt 142 in a thin-walled state, as shown in fig. 10 to 13. The outer cooling flow path now includes a side wall cooling flow path 148 disposed within the insert skirt; the insert mounting portion is provided with a first side wall channel 1491 and a second side wall channel 1492 in communication with the side wall cooling channel 148. The peripheral insert 14 shown in fig. 10 is also a split outer insert 145, but even when the peripheral insert 14 is integrally formed, the side wall cooling channels 148 can be formed in the insert skirt 142 by 3D printing. As shown in fig. 16, in this embodiment, after the peripheral insert 14 is split into at least two outer side inserts 145, a first front flow channel 121 and a second front flow channel 122 may be provided in the front flow plate 12, and a connecting channel 123 for connecting all the outer cooling channels into one peripheral cooling channel is further provided in the front flow plate 12, and two ends of the peripheral cooling channel are respectively communicated with the first front flow channel 121 and the second front flow channel 122. Of course, the first front flow channel 121 and the second front flow channel 122 may be disposed in the front flow channel plate 12 in a one-to-one correspondence with each outer cooling channel, and at this time, both ends of the outer cooling channel disposed in each outer insert 145, that is, the first side wall channel 1491 may be in communication with the first front flow channel 121, and the second side wall channel 1492 may be in communication with the second front flow channel 122. Specifically, to improve the heat transfer efficiency between the insert skirt 142 and the insert mounting portion 141, the outer insert 145 is made of beryllium copper or a steel material, and the outer insert 145 of this embodiment is made of beryllium copper.

As shown in fig. 14, the intermediate insert 13 of the present embodiment is provided with an intermediate cooling flow passage 132, and the intermediate cooling flow passage 132 of the present embodiment is a serpentine flow passage provided in the intermediate insert 13 so that the intermediate cooling flow passage 132 can cover a section corresponding to the intermediate cavity surface 131. Correspondingly, as shown in fig. 20, a third front flow passage 124 and a fourth front flow passage 125 connected to both ends of the intermediate cooling passage 132 are provided in the front flow plate 12.

As shown in FIG. 15, rear mold core 34 of the present embodiment is provided therein with rear mold cooling passages 344 provided around rear mold cavity 341. The rear mold cooling channels 344 cooperate with external cooling channels provided in the peripheral insert 14 to sufficiently cool the glue sites corresponding to the outer peripheral walls of the deep-hole plate product.

The honeycomb panel 35 of the present embodiment is provided with a plurality of mounting through holes 351 therein, and each mounting through hole 351 is internally provided with a rear mold insert 38. The rear mold insert 38 of the present embodiment, as shown in fig. 16-17, includes an insert body having a cooling hole 381 formed in the bottom surface thereof, the cooling hole 381 extending upward to the top of the insert body. A cooling pipe 382 for introducing a cooling medium is provided in the cooling hole 381, and a return passage 383 for returning the cooling medium is formed between an outer wall of the cooling pipe 382 and an inner wall of the cooling hole 381. In this embodiment, the cooling tube 382 is coaxial with the cooling hole 381, gaps are formed between the periphery of the cooling tube 382 and the inner wall of the cooling hole 381, and a backflow channel 383 is formed, and the cross sections of the cooling tube 382 and the cooling hole 381 in this embodiment are circular, that is, the cross section of the backflow channel 383 is circular. The first flow-through plate 36 has a first rear flow-through passage 361 provided therein, and the cooling pipe 382 is connected to the first rear flow-through passage 361. The second flow-through plate 37 is provided with a second rear flow-through passage 371, and the return passage 383 is connected to the second rear flow-through passage 371. Specifically, in this embodiment, the cooling tube 382 extends upward into the top of the cooling hole 381, and a gap is formed between the cooling tube 382 and the top of the cooling hole 381, so that the cooling medium can be directly fed into the bottom of the reagent cavity of the deep-hole plate through the cooling tube 382 to directly cool the bottom of the reagent cavity of the deep-hole plate, and meanwhile, the cooling medium flowing back through the backflow channel 383 can cool the side wall of the reagent cavity of the deep-hole plate; thus, the reagent chambers of the deep hole plate can be fully cooled. In a preferred embodiment of the present utility model, a primary air exhaust groove 384 is provided on the outer wall of the insert body to exhaust the air in the cavity. The depth of the primary air bleed 384 is 0.01-0.05mm, and the depth of the primary air bleed of this embodiment is 0.01mm. In the preferred scheme of this embodiment, the outer wall of the insert body is further provided with a second-stage exhaust groove 385 disposed adjacent to the lower edge of the first-stage exhaust groove 384, and the depth of the second-stage exhaust groove 385 is greater than that of the first-stage exhaust groove 384, so as to further improve the exhaust efficiency. The hanging stand 386 is provided on the bottom outer wall of the insert body of this embodiment.

As shown in fig. 19, the bottom of the rear cavity 331 of the present embodiment is provided with rear mold through holes 339 in one-to-one correspondence with the rear mold cavities 341, and the bottom of the rear mold cavities 341 is provided with cavity bottom holes 345 communicating with the rear mold through holes 339. The geometric dimensions of the rear mold through-hole 339 and the cavity bottom hole 345 are gradually increased in the top-to-bottom direction, and the largest geometric dimension of the cavity bottom hole 345 is equal to or smaller than the smallest geometric dimension of the rear mold through-hole 339. The top outer wall of the honeycomb panel 35 is provided with a first variable-size section 352 which mates with the cavity bottom hole 345 and a second variable-size section 353 which mates with the rear mold through hole 339, respectively. Specifically, according to the structural shape of the deep-hole plate product, the inner walls of the rear mold through hole 339 and the cavity bottom hole 345 are square tapered, and similarly, the outer walls of the first variable-size section 352 and the second variable-size section 353 are square tapered. The included angle alpha between the two opposite side walls of the cavity bottom hole 345 is larger than the included angle beta between the two opposite side walls of the through hole of the rear mold, namely alpha is larger than beta, so that the problem that the push plate 33 and the rear mold core 34 are damaged due to the fact that the angle is too small in the mold opening and closing process, and then poor products or damaged molds are caused can be solved. In this embodiment, the included angle between two opposite sidewalls of the cavity bottom hole 345 is as follows: 10.ltoreq.α.ltoreq.30°, preferably α=20°. The included angle between two opposite side walls of the rear mould through hole is beta, and the following conditions are satisfied: beta is 3-20 deg., preferably beta=10 deg..

An ejector assembly is provided in the lower mold 30 of the present embodiment corresponding to the pouring nozzle 342. The ejector assembly includes an ejector channel and a flexible ejector mechanism 39 mounted within the ejector channel. The ejection channel of the present embodiment is correspondingly disposed between the base 31 and the support base 32. Specifically, through holes 311 and 325 are respectively and correspondingly provided in the base 31 and the support 32, and the through holes 311 and 325 are coaxial and jointly form an ejection channel. As shown in fig. 20-21, the flexible ejection mechanism 39 includes a sleeve 391, a top plate 392, and a connecting block 393. The connecting block 393 is located within the sleeve 391 and is movable in its axial direction. The first end and the second end of sleeve 391 are equipped with connecting through-hole 3911 and thimble through-hole 3912 respectively, pass through connecting through-hole 3911 fixed connection between the first end of connecting block 393 and the roof 392, and the interval between connecting block 393 and the roof 392 is greater than sleeve 391 thickness at first end. Specifically, a connection shaft 394 passing through the connection through hole 3911 is provided between the connection block 393 and the top plate 392. The connecting shaft 394 of the present embodiment is disposed on the connecting block 393, the top plate 392 is fixedly connected to the connecting shaft 394, and the connecting shaft 394 of the present embodiment is integrally formed with the connecting block 393. Of course, in other embodiments, the connecting shaft 394 may be disposed on the top plate 392, and the connecting block 393 is fixedly connected to the connecting shaft 394; in another embodiment, the connecting shaft 394 may be separately provided, and in this case, both ends of the connecting shaft 394 are fixedly connected to the connecting block 393 and the top plate 392, respectively. Specifically, in the present embodiment, the connecting shaft 394 is clearance-fitted with the connecting through hole 3911, and the fitting clearance between the connecting shaft 394 and the connecting through hole 3911 is 0.05-0.5mm, preferably, the fitting clearance between the connecting shaft 394 and the connecting through hole 3911 is 0.1mm, so that the connecting shaft 394 can slide smoothly in the connecting through hole 3911. Specifically, in the present embodiment, a cover plate 395 is provided at the first end of the sleeve 391, and the connection through hole 3911 is provided on the cover plate 395. The difference S1 between the spacing between the connecting block 393 and the top plate 392 and the thickness of the cover plate 395 is 5.0-30.0mm. The difference S1 between the spacing between the connecting block 393 and the top plate 392 and the thickness of the cover plate 395 is the distance of one ejection. The second end of the connecting block 393 of this embodiment is connected with a thimble 396, which is provided with a thimble hole in the push plate 33 and the rear mold core 34, the upper end of the thimble hole is communicated with the pouring nozzle 342, and the thimble 396 passes through the thimble through hole 3912 and extends into the thimble hole. Thus, by providing the ejector pin 396, the pouring nozzle 342 can be ejected by the ejector pin 396 at a time of ejection. An elastic member 397 for applying pressure to the connecting block 393 toward the top plate 392 is provided between the connecting block 393 and the second end of the sleeve 391 in the present embodiment, and the elastic member 397 in the present embodiment employs a spring. By arranging the flexible ejection mechanism 39 in the ejection channel, when the injection molding and die opening of the die are completed, when the ejection mechanism of the injection molding machine starts to eject, the ejector rod of the ejection mechanism of the injection molding machine firstly acts on the top plate 392 to compress the elastic element 397 arranged in the sleeve 391, so that the connecting block 393 moves towards the second end by the distance equal to the difference S1 between the spacing between the ejector block 392 and the connecting block 393 and the thickness of the first end of the sleeve, thereby ejecting the product or the water gap once, and separating the product from the water gap; then under the action of an ejection mechanism of the injection molding machine, the flexible ejection mechanism 39 is driven to integrally move to jack up the push plate 33, so that secondary ejection is realized, and demolding of the product and the water gap is completed; therefore, the secondary ejection can be realized on the basis of not arranging auxiliary components such as a die ejector plate, a button machine and the like, the structure can be effectively simplified, and the die stability is improved.

The above-described embodiments are merely preferred embodiments for fully explaining the present utility model, and the scope of the present utility model is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present utility model, and are intended to be within the scope of the present utility model. The protection scope of the utility model is subject to the claims.

Claims (12)

1. The utility model provides a front mold assembly, includes middle mold insert and cover and establish the outer mold insert outside the middle mold insert, its characterized in that: the outer insert comprises an insert mounting part and an insert skirt, the middle insert is positioned in the insert mounting part, a middle cavity surface is arranged on the middle insert, and a front mold cavity is formed between the middle cavity surface and the inner side surface of the insert skirt;

the outer cooling runner is arranged in the outer insert and comprises a side wall cooling runner arranged in the skirt edge of the insert, and the insert mounting part is provided with a first side wall runner and a second side wall runner which are communicated with the side wall cooling runner.

2. The front mold assembly according to claim 1, wherein: linear flow passages are arranged in the skirt edge of the insert at intervals, and the linear flow passages are connected end to end and form a serpentine side wall cooling flow passage.

3. The front mold assembly according to claim 1, wherein: the distance between the inner side surface of the insert skirt edge and the inner side surface of the insert mounting part is larger than zero, a side edge cavity surface is formed between the insert mounting part and the insert skirt edge, and a front mold cavity surface is formed between the side edge cavity surface and the middle cavity surface in a flush manner.

4. The front mold assembly according to claim 1, wherein: the novel mold comprises a first side wall flow channel and a second side wall flow channel, and is characterized by further comprising a front flow channel plate, wherein the middle insert and the outer insert are both installed on the front flow channel plate, and a first front flow channel communicated with the first side wall flow channel and a second front flow channel communicated with the second side wall flow channel are arranged in the front flow channel plate.

5. The front mold assembly according to claim 4, wherein: the outer inserts are arranged in a split mode and are at least two outer inserts, and the outer cooling flow channels are arranged in each outer insert.

6. The front mold assembly according to claim 5, wherein: the outer inserts are arranged in one-to-one correspondence with each side face of the middle insert.

7. The front mold assembly according to any one of claims 4-6, wherein: the first front overflow flow passage and the second front overflow flow passage are arranged in one-to-one correspondence with each external cooling flow passage; or, the first front flow passage and the second front flow passage are both set as one, and a connecting passage for connecting all the external cooling passages into a peripheral cooling passage is also arranged in the front flow plate, and two ends of the peripheral cooling passage are respectively communicated with the first front flow passage and the second front flow passage.

8. The front mold assembly according to claim 2, wherein: the insert skirt is provided with a glue feeding groove and a glue feeding groove, and the depth directions of the glue feeding groove and the glue feeding groove are both in the longitudinal direction perpendicular to the middle cavity surface; the linear flow channel is arranged along the longitudinal direction and is staggered with the glue feeding groove and the glue feeding groove.

9. The front mold assembly according to claim 4, wherein: an intermediate cooling flow passage is arranged in the intermediate insert, and a third front flow passage and a fourth front flow passage which are respectively connected with two ends of the intermediate cooling flow passage are arranged in the front flow passage plate.

10. The front mold assembly according to claim 9, wherein: the intermediate cooling runner is arranged in a serpentine pattern within the intermediate insert.

11. The front mold assembly according to claim 4, wherein: the outer insert is made of beryllium copper or steel.

12. The deep hole plate mould is characterized in that: comprising a die holder on which the front die assembly according to any one of claims 1-10 is mounted.

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