CN113199708B

CN113199708B - Integrated molding injection mold for annular inserts

Info

Publication number: CN113199708B
Application number: CN202110643045.0A
Authority: CN
Inventors: 陈刚
Original assignee: Suzhou Yunda Plastic Electronics Co ltd
Current assignee: Suzhou Yunda Plastic Electronics Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2023-08-25
Anticipated expiration: 2041-06-09
Also published as: CN113199708A

Abstract

The invention discloses an integral molding injection mold for a circular insert, which comprises the following components: an upper die assembly including an upper die core; the lower die assembly comprises a lower die core die set which is matched with the upper die core; wherein, lower mould benevolence module includes: a first lower mold core; a second lower die core arranged in a central region of the first lower die core; and a third lower die core disposed at a central region of the second lower die core; an insert rod is arranged in the central area of the third lower die core, and the periphery of the top end of the insert rod is sleeved with a circular insert; and a cavity for molding a product is defined between the upper die core and the first, second and third lower die cores, and the annular insert is positioned in the cavity. According to the invention, the lower die core module is composed of a plurality of lower die cores, when one of the lower die cores is damaged, only the damaged lower die core is required to be replaced, and the whole lower die core module is not required to be replaced, so that the production cost is greatly reduced.

Description

Integrated molding injection mold for annular inserts

Technical Field

The invention relates to the technical field of dies. More particularly, the invention relates to an injection mold for integrally molding a circular insert.

Background

In the field of mould technology, it is known to use injection moulds of different structural forms to achieve injection moulding of products. In the process of researching and realizing injection molding of products, the inventor finds that the injection mold in the prior art has at least the following problems:

firstly, the mold cores of the existing mold are integrally machined and formed, and when the mold cores are damaged, the whole mold cores are required to be replaced, so that the cost is high; secondly, current mould can be with product and runner integrated into one piece, and the runner needs excision, and is current all to excision through the manual work, and work efficiency is low, has increased the cost of labor simultaneously.

In view of the foregoing, it is necessary to develop an injection mold for integrally molding a circular insert to solve the above problems.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention mainly aims to provide the annular insert integrated injection mold, which is characterized in that a lower mold core module is formed by a plurality of lower mold cores, when one of the lower mold cores is damaged, only the damaged lower mold core needs to be replaced, the whole lower mold core module does not need to be replaced, so that the production cost is greatly reduced, and meanwhile, a plurality of lower mold cores are arranged to form the lower mold core module, so that the processing and forming of a single lower mold core are facilitated, the processing efficiency of the mold is further improved, and the cost is further reduced.

The invention further aims to provide the annular insert integrated injection mold, which is characterized in that the pouring gate inscribing module is arranged to separate the pouring gate in the glue feeding channel from a product in the cavity when the upper mold core and the lower mold core module are not separated, so that manual operation is not needed, the automation degree is high, the working efficiency is greatly improved, and the production cost is reduced.

To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a circular ring-shaped insert integrally molding injection mold comprising: an upper die assembly including an upper die core; and

the lower die assembly comprises a lower die core die set which is matched with the upper die core;

wherein, lower mould benevolence module includes: a first lower mold core;

a second lower die core arranged in a central region of the first lower die core; and

a third lower die core arranged in a central region of the second lower die core;

an insert rod is arranged in the central area of the third lower die core, and the periphery of the top end of the insert rod is sleeved with a circular insert;

and a cavity for molding a product is defined between the upper die core and the first, second and third lower die cores, and the annular insert is positioned in the cavity.

Preferably, a first molding part is arranged at the top end of the first lower die core;

the top end of the second lower die core is provided with at least two second forming parts, and each second forming part is spirally arranged with the top end of the second lower die core;

the top end of the third lower die core is provided with a third forming part;

a fourth forming part is arranged at the top end of the upper die core;

the fourth forming part is matched with the first forming part, the second forming part and the third forming part to form a product integrally formed with the annular insert.

Preferably, at least two first annular cooling water carrying bodies are arranged in the upper die core, and each first annular cooling water carrying body is arranged in the upper die core in an outward-diffusion array mode.

Preferably, the first lower die core is internally provided with second cooling water;

at least two third annular cooling water transportation devices are arranged in the second lower die core, and each third annular cooling water transportation device is arranged in the second lower die core in an outward-diffusion array mode;

and a fourth annular cooling water carrying device is arranged in the third lower die core.

Preferably, the upper die assembly further comprises: the upper die core is arranged in the upper die frame; and

an upper template fixedly arranged above the upper template frame;

the lower die assembly further includes: the lower die core module is arranged in the lower die frame;

the lower die holder is fixedly arranged at the bottom end of the lower die frame; and

the push rod module is movably arranged between the lower die frame and the lower die holder, and penetrates through the lower die core module.

Preferably, the method further comprises: a pouring gate inscribing module which is movably arranged in the upper die frame,

the pouring gate inscribing module comprises: a rotation driver fixedly installed at a side end of the upper mold frame;

the intermediate transmission unit is in transmission connection with the power output end of the rotary driver; and

the rotating shaft is fixedly connected with the intermediate transmission unit;

the plastic feeding device comprises a rotating shaft, a plastic feeding channel penetrating through the rotating shaft in the vertical direction, a cavity and a rotary driver, wherein the plastic feeding channel penetrates through the rotating shaft in the vertical direction and is communicated with the cavity, and the rotary driver drives the rotating shaft to rotate through an intermediate transmission unit.

Preferably, the outlet of the glue inlet channel is provided with at least two glue outlets, each glue outlet is respectively arranged in a circumferential area of the glue inlet channel outlet, and each glue outlet is communicated with the cavity.

Preferably, the bottom of the rotating shaft is provided with a sealing groove, the sealing groove is located at the outlet of the glue inlet channel, the sealing groove is matched with the upper half part of the annular insert, and the upper half part of the annular insert is sleeved in the sealing groove.

Preferably, the intermediate transmission unit includes: the transmission rack is in transmission connection with the power output end of the rotary driver; and

and the transmission gear is sleeved on the periphery of the rotating shaft and is in transmission connection with the transmission rack.

Preferably, a first protective sleeve is arranged between the rotating shaft and the upper die core, and the first protective sleeve is sleeved on the lower half area of the rotating shaft;

the rotary shaft and the upper die frame are provided with a second protective sleeve and a third protective sleeve, the second protective sleeve is sleeved in the middle area of the rotary shaft, and the third protective sleeve is sleeved in the upper half area of the rotary shaft.

One of the above technical solutions has the following advantages or beneficial effects: through setting up the lower mould benevolence module into by a plurality of lower mould benevolence and constitute, when one of them lower mould benevolence damages, only need change the lower mould benevolence that damages, need not to change whole lower mould benevolence module, greatly reduced into the cost of production, simultaneously, will set up a plurality of lower mould benevolence and constitute lower mould benevolence module, the processing shaping of single lower mould benevolence of being convenient for, and then improved the machining efficiency of mould, further reduce cost.

The other technical scheme has the following advantages or beneficial effects: through setting up runner inscription module in order to separate the runner in the passageway of gluing and the inside product of die cavity when last mould benevolence and lower mould benevolence module are not divided the mould, need not manual operation, degree of automation is high, has improved work efficiency greatly, has reduced manufacturing cost simultaneously.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

For a clearer description of an embodiment of the invention, reference will be made to the accompanying drawings of embodiments, which are given for clarity, wherein:

FIG. 1 is a view showing a depression three-dimensional structure of an injection mold for integrally molding a circular ring-shaped insert according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an injection mold for integrally molding a circular ring-shaped insert according to one embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a three-dimensional view of a product in an injection mold for integrally molding a circular ring-shaped insert according to one embodiment of the present invention;

FIG. 5 is an exploded view of an upper mold assembly, a lower mold assembly and an in-gate mold assembly of an injection mold for integrally molding a circular ring-shaped insert according to one embodiment of the present invention;

FIG. 6 is a three-dimensional view of the upper insert in an injection mold for integrally molding a circular insert according to one embodiment of the present invention;

FIG. 7 is a three-dimensional view of an upper insert in an injection mold for integrally molding a circular insert according to an embodiment of the present invention from another view;

FIG. 8 is a three-dimensional view of a lower insert mold set in an injection mold for integrally molding a circular ring-shaped insert according to an embodiment of the present invention;

FIG. 9 is a view showing a three-dimensional structure of a lower insert mold set in an injection mold for integrally molding a circular ring-shaped insert according to an embodiment of the present invention from another view angle;

FIG. 10 is a cross-sectional view of a first lower core of an injection mold for integrally molding a circular ring-shaped insert according to one embodiment of the present invention;

FIG. 11 is a three-dimensional view of an in-gate mold set in an injection mold for integrally molding a circular ring-shaped insert according to an embodiment of the present invention;

FIG. 12 is a three-dimensional view of the rotational axis of an injection mold for integrally molding a doughnut-shaped insert according to an embodiment of the present invention;

fig. 13 is a cross-sectional view of a rotating shaft in an injection mold for integrally molding a circular ring-shaped insert according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other examples, which a person of ordinary skill in the art would obtain without undue burden based on the embodiments of the invention, are within the scope of the invention.

In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a," "an," or "the" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are defined with respect to the configuration shown in the drawings, and in particular, "height" corresponds to the top-to-bottom dimension, "width" corresponds to the left-to-right dimension, and "depth" corresponds to the front-to-back dimension, are relative concepts, and thus may vary accordingly depending on the location and use of the terms, and therefore these or other orientations should not be interpreted as limiting terms.

Terms (e.g., "connected" and "attached") relating to attachment, coupling, and the like refer to a relationship wherein these structures are directly or indirectly secured or attached to one another through intervening structures, as well as to a relationship wherein they are movably or rigidly attached, unless expressly stated otherwise.

According to an embodiment of the present invention, in combination with the illustrations of fig. 1 to 13, it can be seen that the injection mold for integrally molding the annular insert includes: an upper die assembly 11 including an upper die core 113; and

the lower die assembly 12 comprises a lower die core module 123 matched with the upper die core 113;

wherein, the lower die core module 123 comprises: a first lower core 1231;

a second lower mold core 1232 disposed at a central region of the first lower mold core 1231; and

a third lower core 1233 disposed at a central region of the second lower core 1232;

an insert rod 125 is arranged in the central area of the third lower die core 1233, and the periphery of the top end of the insert rod 125 is sleeved with a circular insert 144;

the upper mold core 113, the first lower mold core 1231, the second lower mold core 1232 and the third lower mold core 1233 define a cavity for molding a product, and the annular insert 144 is located inside the cavity.

It can be understood that, in the present invention, the lower die core module 123 is composed of the first lower die core 1231, the second lower die core 1232 and the third lower die core 1233, when one of the lower die cores is damaged, only the damaged lower die core needs to be replaced, and the whole lower die core module does not need to be replaced, thus greatly reducing the production cost, and simultaneously, a plurality of lower die cores are arranged to form the lower die core module, so that the processing and molding of a single lower die core are facilitated, further the processing efficiency of the die is improved, and the cost is further reduced;

secondly, in the existing mould, the annular inserts are directly placed on the mould core, so that the mould core is easy to damage, and in the invention, the annular inserts are supported by arranging the insert rods, the annular inserts only damage the insert rods and do not damage the mould core, the mould core can be effectively protected, the service life of the mould core is prolonged, and meanwhile, when the insert rods are damaged, the insert rods are only required to be replaced, so that the production cost is further reduced.

In a preferred embodiment of the present invention, product 14 comprises: a wheel disc portion 141;

at least two vane parts 142, each of the vane parts 142 being spirally arranged at an outer circumference of the wheel disc part 141; and

an outer wheel portion 143 disposed at an outer periphery of each of the vane portions 142;

the annular insert 144 is disposed in a central region of the wheel portion 141.

The upper half part of the insert rod 125 is provided with a limiting part 1251, the central area of the circular insert 144 is provided with a limiting hole 1441, and the circular insert 144 is limited and fixed by the cooperation of the limiting hole 1441 and the limiting part 1251.

Further, a first molding part 12311 is disposed at the top end of the first lower mold core 1231;

the top end of the second lower die core 1232 is provided with at least two second molding parts 12321, and each second molding part 12321 is spirally arranged with the top end of the second lower die core 1232;

a third molding part 12331 is arranged at the top end of the third lower die core 1233;

a fourth molding part 1131 is provided at the top end of the upper mold core 113;

the fourth molding portion 1131 is matched with the first molding portion 12311, the second molding portion 12321 and the third molding portion 12331 to mold a product integrally formed with the annular insert 144.

It can be appreciated that the outer wheel portion 143 is formed by the first forming portion 12311 and the fourth forming portion 1131, the blade portion 142 is formed by the second forming portion 12321 and the fourth forming portion 1131, the wheel disc portion 141 is formed by the third forming portion 12331 and the fourth forming portion 1131, and meanwhile, the insert rod 125 is disposed in the central region of the third lower die core 1233, and the annular insert 144 is sleeved on the outer circumference of the top end of the insert rod 125, so that the annular insert 144 and the wheel disc portion 141 are integrally formed.

Further, at least two first annular cooling water-carrying bodies 1132 are provided in the upper mold core 113, and each first annular cooling water-carrying body 1132 is disposed in the upper mold core 113 in an outward-diffusion array manner.

Further, a second cooling water 12312 is provided in the first lower mold core 1231;

at least two third annular cooling water carrying bodies 12322 are arranged in the second lower die core 1232, and each third annular cooling water carrying body 12322 is arranged in the second lower die core 1232 in an outward-diffusion array mode;

the third lower mold core 1233 is provided with a fourth annular cooling water 12332.

It can be understood that the inner part of the upper mold core is provided with a plurality of first annular cooling water conveying pipes 1132 to cool the fourth molding part 1131 so as to facilitate the molding of the product; a second cooling water 12312 is provided in the first lower mold core 1231, so that the first molding portion 12311 and the fourth molding portion 1131 cooperate to mold the outer wheel portion 143; a plurality of third annular cooling water-carrying bodies 12322 are disposed in the second lower mold core 1232, so that the second molding portion 12321 and the fourth molding portion 1131 cooperate to mold the blade portion 142; the third lower mold core 1233 is provided with a fourth annular cooling water 12332 therein, so that the third molding portion 12331 and the fourth molding portion 1131 cooperate to mold the wheel disc portion 141.

In a preferred embodiment of the present invention, each of the first annular cooling water 1132 includes at least two first cooling grooves 11321, each of the first cooling grooves 11321 extends along the vertical direction, and each of the first cooling grooves 11321 is regularly arranged along the extending direction of the first annular cooling water 1132, so as to enhance the cooling effect of the first annular cooling water by providing a plurality of first cooling grooves 11321;

each third annular cooling water 12322 includes at least two second cooling grooves 12323, each second cooling groove 12323 extends along the vertical direction, and each second cooling groove 12323 is regularly arrayed along the extending direction of the third annular cooling water 12322, so as to enhance the cooling effect of the third annular cooling water 12322 by providing a plurality of second cooling grooves 12323;

each fourth annular cooling water carrying unit 12332 comprises at least two third cooling grooves 12333, each third cooling groove 12333 extends along the vertical direction, each third cooling groove 12333 is regularly arrayed along the extending direction of the fourth annular cooling water carrying unit 12332, and the cooling effect of the fourth annular cooling water carrying unit 12332 is enhanced by arranging a plurality of third cooling grooves 12333.

Further, the upper die assembly 11 further includes: an upper mold frame 112, wherein the upper mold core 113 is disposed inside the upper mold frame 112; and

an upper die plate 111 fixedly installed above the upper die frame 112;

the lower die assembly 12 further includes: the lower mold frame 122, the lower mold core module 123 is disposed inside the lower mold frame 122;

a lower die holder 121 fixedly installed at a bottom end of the lower die frame 122; and

the push rod module 124 is movably disposed between the lower die frame 122 and the lower die holder 121, and the push rod module 124 penetrates the lower die core module 123.

Further, the method further comprises the following steps: an in-gate module 13 movably installed inside the upper mold frame 112,

the in-gate cutting module 13 includes: a rotation driver 131 fixedly installed at a side end of the upper mold frame 112;

an intermediate transmission unit in transmission connection with the power output end of the rotary driver 131; and

a rotation shaft 134 fixedly connected to the intermediate transmission unit;

the rotary shaft 134 is provided with a glue inlet channel 1341 penetrating the rotary shaft 134 in a vertical direction, the glue inlet channel 1341 is communicated with the cavity, and the rotary driver 131 drives the rotary shaft 134 to rotate through an intermediate transmission unit.

It can be appreciated that after the upper mold core 113 and the lower mold core module 123 are assembled, a product is molded in the cavity, and meanwhile, a gate integrated with the product is generated in the glue inlet channel 1341, and the gate needs to be cut off.

Further, at least two glue outlets 1342 are formed at the outlet of the glue inlet channel 1341, each glue outlet 1342 is respectively disposed in a circumferential area at the outlet of the glue inlet channel 1341, and each glue outlet 1342 is communicated with the cavity.

It can be appreciated that the rotary driver 131 drives the rotary shaft 134 to rotate through an intermediate transmission unit, so that the rotary shaft 134 applies a certain force to the gates formed at the respective glue outlets 1342 at the outlet of the glue inlet 1341, thereby separating the gates formed at the respective glue outlets 1342 from the product molded in the cavity, and finally separating the whole gates formed in the glue inlet 1341 from the product molded in the cavity.

Further, a sealing groove 1343 is provided at the bottom end of the rotating shaft 134, the sealing groove 1343 is located at the outlet of the glue inlet channel 1341, the sealing groove 1343 is adapted to the upper half of the annular insert 144, and the upper half of the annular insert 144 is sleeved in the sealing groove 1343.

Through will the upper half cup joint of ring shape inserts 144 in seal groove 1343, so that advance gluey passageway 1341 can only be through every play mouth 1342 and die cavity intercommunication, thereby be convenient for with advance runner that gluey passageway 1341 produced and the product separation of die cavity internal shaping, improve work efficiency, can be with the spacing fixed of ring shape inserts 144 simultaneously, prevent ring shape inserts 144 are movable at will, thereby reduce the formation of bad product.

In a preferred embodiment of the present invention, the upper module 11 further includes: sprue bush 114, which communicates with the inlet of the glue inlet 1341.

Further, the intermediate transmission unit includes: a transmission rack 132 in transmission connection with a power output end of the rotary driver 131; and

and a transmission gear 133 sleeved on the outer circumference of the rotating shaft 134, wherein the transmission gear 133 is in transmission connection with the transmission rack 132.

It can be appreciated that the rotary driver 131 drives the driving rack 132 to move, thereby driving the driving gear 133 to rotate, and finally driving the rotating shaft 134 to rotate, so as to control the rotating shaft 134 to separate the gate from the product.

In a preferred embodiment of the present invention, a guide slot 1121 is formed at the top end of the upper mold frame 112, and the driving rack 132 is disposed inside the guide slot 1121.

It will be appreciated that the guide slot 1121 guides the drive rack 132.

The surface of the guide slot 1121 is provided with a wear-resistant block to prevent the driving rack 132 from being burned out, so as to prolong the service life of the driving rack 132.

Further, a first protective sleeve 135 is disposed between the rotating shaft 134 and the upper mold core 113, and the first protective sleeve 135 is sleeved on the lower half area of the rotating shaft 134;

a second protecting sleeve 136 and a third protecting sleeve 137 are arranged between the rotating shaft 134 and the upper mold frame 112, the second protecting sleeve 136 is sleeved on the middle area of the rotating shaft 134, and the third protecting sleeve 137 is sleeved on the upper half area of the rotating shaft 134.

It can be appreciated that, due to the periodic rotation of the rotating shaft 134, the upper mold core 113 may be damaged, and the first protection sleeve 135 is disposed between the rotating shaft 134 and the upper mold core 113 to prevent the rotating shaft 134 from damaging the upper mold core 113 after multiple rotations, thereby increasing the cost;

since the rotation shaft 134 is periodically rotated, the upper mold frame 112 may be damaged, and the second protective sleeve 136 and the third protective sleeve 137 are disposed between the rotation shaft 134 and the upper mold frame 112, so as to prevent the rotation shaft 134 from being damaged after multiple rotations, thereby increasing the cost.

The number of equipment and the scale of processing described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be readily apparent to those skilled in the art.

Although embodiments of the invention have been disclosed above, they are not limited to the use listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

Claims

1. An injection mold for integrally molding a circular insert, comprising: an upper die assembly (11) including an upper die core (113); and

the lower die assembly (12) comprises a lower die core module (123) which is matched with the upper die core (113);

wherein, lower mould benevolence module (123) include: a first lower die core (1231);

a second lower die core (1232) disposed at a central region of the first lower die core (1231); and

a third lower die core (1233) disposed at a central region of the second lower die core (1232);

an insert rod (125) is arranged in the central area of the third lower die core (1233), and a circular insert (144) is sleeved on the periphery of the top end of the insert rod (125);

a cavity for molding a product is defined between the upper die core (113) and the first lower die core (1231), the second lower die core (1232) and the third lower die core (1233), and the annular insert (144) is positioned in the cavity;

the top end of the first lower die core (1231) is provided with a first forming part (12311);

the top end of the second lower die core (1232) is provided with at least two second forming parts (12321), and each second forming part (12321) is spirally arranged with the top end of the second lower die core (1232);

a third forming part (12331) is arranged at the top end of the third lower die core (1233);

a fourth forming part (1131) is arranged at the top end of the upper die core (113);

forming a product integrally formed with the annular insert (144) through the cooperation of the fourth forming part (1131), the first forming part (12311), the second forming part (12321) and the third forming part (12331);

the mold is characterized in that at least two first annular cooling water transportation pipes (1132) are arranged in the upper mold core (113), and each first annular cooling water transportation pipe (1132) is arranged in the upper mold core (113) in an outward-diffusion array mode;

the mold is characterized in that a second cooling water carrying device (12312) is arranged in the first lower mold core (1231);

at least two third annular cooling water carrying bodies (12322) are arranged in the second lower die core (1232), and each third annular cooling water carrying body (12322) is arranged in the second lower die core (1232) in an outward-diffusion array mode;

and a fourth annular cooling water carrying device (12332) is arranged in the third lower die core (1233).

2. The annular insert integrally formed injection mold according to claim 1, wherein the upper mold assembly (11) further comprises: an upper mold frame (112), wherein the upper mold core (113) is arranged in the upper mold frame (112); and

an upper die plate (111) fixedly mounted above the upper die frame (112);

the lower die assembly (12) further comprises: the lower die core module (123) is arranged in the lower die frame (122);

the lower die holder (121) is fixedly arranged at the bottom end of the lower die frame (122); and

the push rod module (124) is movably arranged between the lower die frame (122) and the lower die holder (121), and the push rod module (124) penetrates through the lower die core module (123).

3. The annular insert integrally formed injection mold of claim 2, further comprising: a pouring gate internal cutting module (13) which is movably arranged in the upper die frame (112),

the in-gate cutting module (13) comprises: a rotation driver (131) fixedly mounted to a side end of the upper die frame (112);

an intermediate transmission unit in transmission connection with a power output end of the rotary driver (131); and

a rotation shaft (134) fixedly connected with the intermediate transmission unit;

the plastic feeding device comprises a rotating shaft (134), wherein a plastic feeding channel (1341) penetrating through the rotating shaft (134) in the vertical direction is formed in the rotating shaft (134), the plastic feeding channel (1341) is communicated with a cavity, and a rotary driver (131) drives the rotating shaft (134) to rotate through an intermediate transmission unit.

4. A circular insert integrally formed injection mold as claimed in claim 3, wherein at least two glue outlets (1342) are formed at the outlet of the glue inlet channel (1341), each glue outlet (1342) is respectively arranged in a circumferential area at the outlet of the glue inlet channel (1341), and each glue outlet (1342) is communicated with the cavity.

5. The injection mold for integrally molding the annular insert according to claim 3, wherein a sealing groove (1343) is formed at the bottom end of the rotating shaft (134), the sealing groove (1343) is located at the outlet of the glue inlet channel (1341), the sealing groove (1343) is matched with the upper half part of the annular insert (144), and the upper half part of the annular insert (144) is sleeved in the sealing groove (1343).

6. The annular insert integrally formed injection mold of claim 3, wherein said intermediate drive unit comprises: a transmission rack (132) in transmission connection with a power output end of the rotary driver (131); and

and the transmission gear (133) is sleeved on the periphery of the rotating shaft (134), and the transmission gear (133) is in transmission connection with the transmission rack (132).

7. A circular insert integrally formed injection mold as claimed in claim 3, wherein a first protective sleeve (135) is provided between the rotary shaft (134) and the upper mold core (113), the first protective sleeve (135) being sleeved on a lower half region of the rotary shaft (134);

a second protective sleeve (136) and a third protective sleeve (137) are arranged between the rotating shaft (134) and the upper die frame (112), the second protective sleeve (136) is sleeved in the middle area of the rotating shaft (134), and the third protective sleeve (137) is sleeved in the upper half area of the rotating shaft (134).