CN221437028U - Injection molding device - Google Patents

Abstract

The utility model belongs to the technical field of injection molding equipment, and discloses an injection molding device which comprises a mounting plate and an injection molding mechanism, wherein an injection molding mold is arranged below the mounting plate, a product mold cavity is arranged in the injection molding mold, plastic melt can circulate in the product mold cavity and solidify to form an injection molding product, the injection molding mechanism comprises a runner assembly and an injection molding hot nozzle, the injection molding hot nozzle is used for heating plastic to melt the plastic to form the plastic melt, the injection molding hot nozzle penetrates through the mounting plate and is fixedly connected with the mounting plate, the runner assembly is arranged between the mounting plate and the injection molding mold and is connected with the mounting plate, a plurality of injection molding runners are arranged in the runner assembly and are in one-to-one correspondence with the product mold cavity, the injection molding runners are communicated with the injection molding hot nozzle, the injection molding runners comprise a plurality of glue inlets which are uniformly distributed around the axis of the injection molding product, the plastic melt enters the product mold cavity through the plurality of glue inlets, the injection molding pressure is reduced, and the wall thickness of the product is ensured to be uniform.

Description

Injection molding device

Technical Field

The utility model relates to the technical field of injection molding equipment, in particular to an injection molding device.

Background

The thin-wall deep cavity type component is widely applied to medical equipment, the plastic thin-wall deep cavity component is produced and processed in an injection molding mode, in the prior art, hot-to-cold thin water gap single-point glue feeding is adopted, plastic melt flows into a mold of the thin-wall deep cavity component only through one water gap, injection molding pressure is high, the wall thickness deviation of a product is large, meanwhile, the problems of difficult production process control, long control period and frequent value jump during reagent test are generated, even leakage is caused by cup bottom pulling perforation, and operators are increased, efficiency is reduced and production cost is increased due to the defective rate of the product. Accordingly, there is a need for an injection molding apparatus that solves the above-mentioned problems.

Disclosure of utility model

One object of the present utility model is to:

The utility model provides an injection molding device, plastics melt gets into in the product die cavity through a plurality of glue inlets, effectively reduces injection molding's pressure, reduces the wall thickness deviation of product simultaneously, guarantees that the product wall thickness is even, reduces the product defective rate.

To achieve the purpose, the utility model adopts the following technical scheme:

An injection molding apparatus, comprising:

The injection molding device comprises a mounting plate, wherein an injection mold is arranged below the mounting plate, a plurality of product mold cavities are arranged in the injection mold, and plastic melt can circulate in the product mold cavities and solidify to form injection molding products;

the injection molding mechanism comprises a runner assembly and an injection molding hot nozzle, the injection molding hot nozzle is used for heating plastics to enable the plastics to be melted to form plastic melt, the injection molding hot nozzle penetrates through the mounting plate and is fixedly connected with the mounting plate, the runner assembly is arranged between the mounting plate and the injection molding die and is connected with the mounting plate, a plurality of injection molding runners are arranged in the runner assembly, the injection molding runners are in one-to-one correspondence with the product die cavities, the injection molding runners are communicated with the injection molding hot nozzle, the injection molding runners comprise a plurality of glue inlets, the glue inlets are uniformly distributed around the axis of the injection molding product, and the glue inlets are communicated with the product die cavities.

Preferably, the injection molding runner comprises four glue inlets, the four glue inlets are uniformly distributed around the axis of the injection molding product, one end of each glue inlet, which is communicated with the product mold cavity, is provided with a thin water gap, and the plastic melt enters the product mold cavity through the thin water gap.

Preferably, when the plastic melt is cooled, the plastic melt is solidified in the injection molding runner to form a connecting piece, the injection molding mechanism further comprises a separation assembly, the separation assembly is mounted on the mounting plate, the mounting plate is movably arranged in the vertical direction, and the separation assembly is used for driving the connecting piece to be separated from the injection molding product.

Preferably, the separation assembly comprises a runner crochet and a crochet fixed plate, the crochet fixed plate is connected with the mounting plate, the runner crochet is arranged on the crochet fixed plate in a penetrating manner, one end of the runner crochet can be selectively connected with the connecting piece, and the other end of the runner crochet is connected with the crochet fixed plate.

Preferably, the runner assembly comprises a runner fixing plate and a runner insert, the runner fixing plate is connected to the bottom of the mounting plate, the runner insert is connected with the runner fixing plate, the injection runner is arranged in the runner insert, and the runner fixing plate is used for fixing the runner insert.

Preferably, the runner insert comprises a guide insert and a glue inlet insert, a guide channel is arranged in the guide insert, a glue inlet runner is arranged in the glue inlet insert, a flow distribution channel is arranged between the runner fixing plate and the mounting plate, the guide channel is communicated with the flow distribution channel, the flow distribution channel is communicated with a plurality of injection molding runners, and the injection molding runners comprise glue inlet runners.

Preferably, the glue feeding insert at least comprises a first glue feeding insert and a second glue feeding insert, the bottom of the first glue feeding insert is connected with the top of the second glue feeding insert, a first glue feeding runner is arranged in the first glue feeding insert, a second glue feeding runner is arranged in the second glue feeding insert, the first glue feeding runner is communicated with the split-flow channel, the second glue feeding runner is communicated with the first glue feeding runner, and the flow of the first glue feeding runner is larger than that of the second glue feeding runner.

Preferably, the runner fixing plate is provided with an insert mounting groove, and the glue inlet insert is detachably mounted in the insert mounting groove.

Preferably, the injection molding mechanism further comprises a cooling insert, wherein the cooling insert is sleeved on the periphery of the injection molding hot nozzle, and the cooling insert is used for cooling the plastic melt.

Preferably, the injection molding mechanism is provided with a plurality of injection molding mechanisms, and the injection molding mechanisms are uniformly distributed on the mounting plate.

The utility model has the beneficial effects that:

The utility model provides an injection molding device, which comprises a mounting plate and an injection molding mechanism, wherein an injection molding die is arranged below the mounting plate, a product die cavity is arranged in the injection molding die, plastic melt can circulate in the product die cavity and solidify to form an injection molding product, the injection molding mechanism is used for melting plastic and injecting the plastic melt into the product die cavity, the injection molding mechanism comprises an injection molding hot nozzle used for melting the plastic and a runner assembly used for injecting the plastic melt into the product die cavity, the runner assembly is arranged between the mounting plate and the injection molding die and is connected with the mounting plate, a plurality of injection molding runners are arranged in the runner assembly and are in one-to-one correspondence with the product die cavity, the injection molding runners are communicated with the injection molding hot nozzle, the injection molding runners comprise a plurality of glue inlets, the glue inlets are uniformly distributed around the axis of the injection molding product, and the glue inlets are communicated with the product die cavity. The plastic is heated by the injection molding hot nozzle and then is melted to form plastic melt, the plastic melt flows to the injection molding runner, the plastic melt in the injection molding runner is simultaneously injected into the product mold cavity through the glue inlets, the pressure of injection molding is reduced, meanwhile, the wall thickness deviation of the product is reduced, the wall thickness uniformity of the product is ensured, and the reject ratio of the product is reduced.

Drawings

The utility model is described in further detail below with reference to the drawings and examples;

FIG. 1 is a schematic view of an injection molding apparatus;

FIG. 2 is an isometric view of an injection molding mechanism;

FIG. 3 is an exploded view of the flow path assembly;

FIG. 4 is an internal schematic view of a flow channel assembly;

FIG. 5 is a schematic diagram of the operation of the injection molding mechanism;

Fig. 6 is an enlarged view of a portion a in fig. 5.

In the figure:

1. a mounting plate;

2. A flow passage assembly; 21. a flow channel fixing plate; 22. a flow directing insert; 23. a first glue-feeding insert; 24. a second glue-feeding insert; 211. insert mounting slots;

3. Injection molding a hot nozzle;

41. Injection molding a runner; 42. a diversion channel; 43. a shunt channel; 44. a glue inlet; 45. a first glue inlet flow passage; 46. a second glue inlet flow passage; 47. a third glue inlet flow passage;

5. A separation assembly; 51. a runner crochet hook; 52. a crochet hook fixing plate;

6. Injection molding a product;

7. Cooling the insert.

Detailed Description

In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the operation, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for providing a special meaning.

In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

As shown in fig. 1 to 6, the utility model provides an injection molding device, which comprises a mounting plate 1 and an injection molding mechanism, wherein an injection mold is arranged below the mounting plate 1, a plurality of product mold cavities are arranged in the injection mold, and plastic melt can circulate in the product mold cavities and solidify to form injection molding products 6. The injection molding mechanism is used for melting plastics and injecting plastic melt into a product die cavity, the injection molding mechanism comprises a runner component 2 and an injection molding hot nozzle 3, the injection molding hot nozzle 3 penetrates through the mounting plate 1 and is fixedly connected with the mounting plate 1, the runner component 2 is arranged between the mounting plate 1 and an injection molding die, the runner component 2 is connected with the mounting plate 1, a plurality of injection molding runners 41 are arranged in the runner component 2, the injection molding runners 41 are arranged in one-to-one correspondence with the product die cavity, the injection molding runners 41 are communicated with the injection molding hot nozzle 3, the plastic melt can flow from the injection molding hot nozzle 3 to the injection molding runners 41, the injection molding runners 41 comprise a plurality of glue inlets 44, the glue inlets 44 are uniformly distributed around the axis of an injection molding product 6, and the glue inlets 44 are communicated with the product die cavity and the injection molding runners 41.

In the actual working process, the plastic raw material is heated by the injection molding hot nozzle 3 and then melted to form plastic melt, the plastic melt flows to the injection molding runner 41, the plastic melt in the injection molding runner 41 is simultaneously injected into a product mold cavity through the plurality of glue inlets 44, the pressure of injection molding is reduced, meanwhile, the wall thickness deviation of a product is reduced, the wall thickness uniformity of the product is ensured, the reject ratio of the product is reduced, and therefore the production efficiency is improved and the production cost is reduced.

In this embodiment, the injection runner 41 includes four glue inlets 44, the four glue inlets 44 are uniformly distributed around the axis of the injection product 6, one end of the glue inlets 44, which is in communication with the product mold cavity, is set as a fine water inlet, and the plastic melt enters the product mold cavity through the fine water inlet. On the one hand, the injection molding pressure can be effectively reduced in the plastic melt flowing into the product die cavity from four thin mouth of a river, and the plastic melt evenly flows into the product die cavity, avoids the plastic melt to be too thin at the bottom backlog and to cause the poor injection molding product 6 of injection molding product 6, and on the other hand, four thin mouth of a river encircle the axis setting of injection molding product 6, namely four thin mouth of a river encircle the axis setting of product die cavity, and the plastic melt is from the injection product die cavity of all directions, avoids the uneven wall thickness deviation that leads to injection molding product 6 of plastic melt flow direction. In addition, when the plastic melt cools, the plastic melt solidifies in the injection runner 41 to form a connecting piece, the plastic melt at the thin water gap solidifies and is connected with the injection molding product 6, the arrangement of the thin water gap reduces the connection area of the connecting piece and the injection molding product 6, the force required for separating the injection molding product 6 from the connecting piece is reduced, the injection molding product 6 and the connecting piece are convenient to separate and demold, and meanwhile, the damage of the injection molding product 6 in the demolding process is avoided.

As shown in fig. 2, the injection molding mechanism further comprises a separation assembly 5, the separation assembly 5 is mounted on the mounting plate 1, the mounting plate 1 is movably arranged along the vertical direction, the mounting plate 1 can drive the separation assembly 5 to be away from the injection mold along the vertical direction, the separation assembly 5 can be selectively connected with the connecting piece, and the separation assembly 5 is used for driving the connecting piece to be separated from the injection molding product 6.

Illustratively, the separating assembly 5 includes a runner crochet 51 and a crochet fixed plate 52, the crochet fixed plate 52 is connected with the mounting plate 1, the runner crochet 51 is penetrated through the crochet fixed plate 52, one end of the runner crochet 51 can be selectively connected with the connecting piece, and the other end of the runner crochet 51 is connected with the crochet fixed plate 52. Specifically, the crochet hook fixing plate 52 is installed at the top of the mounting plate 1 and is connected with the mounting plate 1, the runner crochet hook 51 sequentially penetrates through the crochet hook fixing plate 52 and the mounting plate 1, the runner crochet hook 51 comprises a connecting part and a bearing part, the bearing part can be abutted with the crochet hook fixing plate 52, and the connecting part can be selectively connected with a connecting piece.

Illustratively, the runner hook 51 is inserted when the injection runner 41 is not fully solidified to form the connection piece, the connection piece is inserted into the plastic melt, and after the plastic melt in the injection runner 41 is solidified, the connection piece is connected to the connection piece of the runner hook 51. Further, the bottom area of connecting portion is greater than its top area, and the cross-section of connecting portion is trapezium structure, and when the plastics melt in the runner 41 of moulding plastics is connected and solidifies with connecting portion, connecting portion inlays and locates in the connecting piece, and the cross-section is trapezium structure and breaks away from the connecting piece when can avoiding runner crochet hook 51 to remove along vertical direction, guarantees that separation subassembly 5 can drive the connecting piece and break away from injection molding product 6.

Optionally, the connecting part is connected with the connecting piece through an adhesive medium such as glue or hot melt adhesive.

Optionally, the connecting portion is provided with a screw structure that can be tapped into the connecting member for threaded connection therewith.

As shown in fig. 3, the runner assembly 2 includes a runner fixing plate 21 and a runner insert, the runner fixing plate 21 is disposed at the bottom of the mounting plate 1 and detachably connected with the mounting plate 1, the runner insert is connected with the runner fixing plate 21, an injection runner 41 is disposed in the runner insert, and the runner fixing plate 21 is used for fixing the runner insert.

Illustratively, the runner insert comprises a guide insert 22 and a glue inlet insert, a guide channel 42 is arranged in the guide insert 22, a glue inlet runner is arranged in the glue inlet insert, a flow dividing channel 43 is arranged between the runner fixing plate 21 and the mounting plate 1, the guide channel 42 is communicated with the flow dividing channel 43, the flow dividing channel 43 is communicated with a plurality of injection molding runners 41, and the injection molding runners 41 comprise glue inlet runners. The runner fixing plate 21 serves on the one hand to fix the runner insert and on the other hand to assist in the construction of the flow guide channel 42, the flow dividing channel 43 and the injection runner 41. The runner insert and the runner fixing plate 21 are respectively and independently processed, and an integral flow path of plastic melt is formed through the components of the runner insert, the runner fixing plate 21 and the mounting plate 1, so that the processing of the injection runner 41, the diversion channel 42 and the diversion channel 43 is facilitated, the processing difficulty and the manufacturing cost of the injection molding device are reduced, and meanwhile, the connecting piece is also facilitated to be separated from the injection molding device.

In the actual working process, the plastic is melted in the injection molding hot nozzle 3 to form plastic melt, then flows to the diversion channel 42, flows into the separation channel along the diversion channel 42, then is diverted to each injection molding runner 41, finally flows into the product mold cavity through the glue inlet runner and the glue inlet 44, and the plastic melt is cooled to form the injection molding product 6.

Further, the glue feeding insert at least comprises a first glue feeding insert 23 and a second glue feeding insert 24, the bottom of the first glue feeding insert 23 is connected with the top of the second glue feeding insert 24, a first glue feeding flow passage 45 is arranged in the first glue feeding insert 23, a second glue feeding flow passage 46 is arranged in the second glue feeding insert 24, the first glue feeding flow passage 45 is communicated with the flow dividing passage 43, the second glue feeding flow passage 46 is communicated with the first glue feeding flow passage 45, and the flow of the first glue feeding flow passage 45 is larger than the flow of the second glue feeding flow passage 46. The corresponding injection runner 41 can be adjusted for injection products 6 of different models through the glue inlet insert. For example, when the size of the injection product 6 is larger, the closer the distance between the injection product 6 and the mounting plate 1 is, the more plastic melt is needed for the injection product 6, the first glue inlet flow channel 45 is communicated with the product mold cavity, the path through which the plastic melt flows is short, so that the plastic melt has more time to be injected into the product mold cavity, and the product mold cavity can be ensured to be filled with the plastic melt; when the size of the injection molding product 6 is smaller, the distance between the injection molding product 6 and the mounting plate 1 becomes longer, and the plastic melt needed by the injection molding product 6 is reduced, the second glue inlet flow channel 46 is communicated with the product mold cavity, the plastic melt flows through the first glue inlet flow channel 45 and the second glue inlet flow channel 46, the path through which the plastic melt flows is increased, and the cooling time of the plastic melt is shortened under the condition that the product mold cavity is fully filled. In addition, the glue inlet flow channel extends along the vertical direction, the flow rate of the plastic melt is increased to the greatest extent by utilizing gravity, the flow rate of the second glue inlet flow channel 46 is smaller than that of the first glue inlet flow channel 45, namely, the diameter of the second glue inlet flow channel 46 is smaller than that of the first glue inlet flow channel 45, and the connecting piece is convenient to separate from the injection molding flow channel 41.

In other embodiments, the glue inlet insert further includes a third glue inlet insert or even more, or the third glue inlet runner 47 is provided in the runner fixing plate 21, so as to adapt to injection molding products 6 with different sizes, increase the universality of the injection molding device, enable the injection molding device to simultaneously produce injection molding products 6 with multiple models, and improve the production efficiency.

As shown in fig. 3, the runner fixing plate 21 is provided with an insert mounting groove 211, the insert mounting groove 211 extends along the vertical direction, the glue inlet insert is detachably mounted in the insert mounting groove 211, the flow of the glue inlet runner can be adjusted by replacing the glue inlet insert, and the applicability of the injection molding device is improved.

The injection mechanism further comprises a cooling insert 7, the cooling insert 7 is sleeved on the periphery of the injection hot nozzle 3, and the cooling insert 7 is used for cooling plastic melt. In the actual working process, the cooling insert 7 and the injection hot nozzle 3 are started at the same time, on one hand, the cooling insert 7 can cool the plastic melt in the injection hot nozzle 3, so that the cooling and forming of the injection product 6 are quickened, and the production efficiency is improved; on the other hand, the cooling insert 7 can reduce the working temperature of the injection molding hot nozzle 3, avoid overheat damage of the injection molding hot nozzle 3 and prolong the service life of the injection molding hot nozzle 3.

Illustratively, the injection molding mechanism is provided with a plurality of injection molding mechanisms, the plurality of injection molding mechanisms are uniformly distributed on the mounting plate 1, the injection molding device can be used for producing injection molding products 6 on a large scale, the production efficiency is improved, and the production cost is reduced.

Furthermore, the foregoing description of the preferred embodiments and the principles of the utility model is provided herein. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims (10)

1. An injection molding apparatus, comprising:

The plastic injection molding device comprises a mounting plate (1), wherein an injection mold is arranged below the mounting plate (1), a plurality of product mold cavities are arranged in the injection mold, and plastic melt can circulate in the product mold cavities and solidify to form injection molding products (6);

Injection molding mechanism, injection molding mechanism includes runner subassembly (2) and hot mouth (3) of moulding plastics, hot mouth (3) of moulding plastics are used for heating plastics and make its melting formation plastics melt, hot mouth (3) of moulding plastics wear to locate mounting panel (1) just hot mouth (3) of moulding plastics with mounting panel (1) fixed connection, runner subassembly (2) are located mounting panel (1) with between the injection mold just runner subassembly (2) with mounting panel (1) are connected, be equipped with a plurality of runner (41) of moulding plastics in runner subassembly (2), runner (41) of moulding plastics with product die cavity one-to-one sets up, runner (41) of moulding plastics with hot mouth (3) of moulding plastics intercommunication, runner (41) of moulding plastics include a plurality of glue inlet (44), a plurality of glue inlet (44) are around the axis evenly distributed of moulding plastics product (6), glue inlet (44) with product die cavity intercommunication.

2. Injection molding apparatus according to claim 1, wherein the injection runner (41) comprises four glue inlets (44), the four glue inlets (44) being evenly distributed around the axis of the injection molded product (6), the glue inlets (44) being provided as a thin water gap at the end communicating with the product mold cavity, through which thin water gap the plastic melt enters the product mold cavity.

3. Injection molding apparatus according to claim 2, wherein the plastic melt solidifies in the injection molding channel (41) to form a connecting piece when the plastic melt cools, the injection molding mechanism further comprising a separation assembly (5), the separation assembly (5) being mounted to the mounting plate (1), the mounting plate (1) being movably arranged in a vertical direction, the separation assembly (5) being adapted to drive the connecting piece to separate from the injection molded product (6).

4. An injection molding apparatus according to claim 3, wherein the separation assembly (5) comprises a runner crochet (51) and a crochet fixed plate (52), the crochet fixed plate (52) is connected with the mounting plate (1), the runner crochet (51) is arranged through the crochet fixed plate (52), one end of the runner crochet (51) is selectively connectable with the connecting piece, and the other end of the runner crochet (51) is connected with the crochet fixed plate (52).

5. Injection molding apparatus according to claim 1, wherein the runner assembly (2) comprises a runner fixing plate (21) and a runner insert, the runner fixing plate (21) is connected to the bottom of the mounting plate (1), the runner insert is connected to the runner fixing plate (21), the runner insert is internally provided with the injection molding runner (41), and the runner fixing plate (21) is used for fixing the runner insert.

6. The injection molding device according to claim 5, wherein the runner insert comprises a guide insert (22) and a glue inlet insert, a guide channel (42) is arranged in the guide insert (22), a glue inlet runner is arranged in the glue inlet insert, a flow distribution channel (43) is arranged between the runner fixing plate (21) and the mounting plate (1), the guide channel (42) is communicated with the flow distribution channel (43), the flow distribution channel (43) is communicated with a plurality of injection molding runners (41), and the injection molding runners (41) comprise glue inlet runners.

7. The injection molding device according to claim 6, wherein the glue inlet insert comprises at least a first glue inlet insert (23) and a second glue inlet insert (24), the bottom of the first glue inlet insert (23) is connected with the top of the second glue inlet insert (24), a first glue inlet runner (45) is arranged in the first glue inlet insert (23), a second glue inlet runner (46) is arranged in the second glue inlet insert (24), the first glue inlet runner (45) is communicated with the diversion channel (43), the second glue inlet runner (46) is communicated with the first glue inlet runner (45), and the flow of the first glue inlet runner (45) is greater than the flow of the second glue inlet runner (46).

8. The injection molding apparatus according to claim 6, wherein the runner fixing plate (21) is provided with an insert mounting groove (211), and the molding insert is detachably mounted to the insert mounting groove (211).

9. The injection molding apparatus according to claim 1, wherein the injection molding mechanism further comprises a cooling insert (7), the cooling insert (7) being fitted around the periphery of the injection nozzle (3), the cooling insert (7) being for cooling the plastic melt.

10. Injection molding apparatus according to any one of claims 1-9, wherein the injection molding means are provided in a number, which are evenly distributed on the mounting plate (1).