CN119408065A

CN119408065A - Injection mold

Info

Publication number: CN119408065A
Application number: CN202411537095.0A
Authority: CN
Inventors: 陈永平; 吴先杰
Original assignee: Shenzhen Connector Technology Co ltd
Current assignee: Shenzhen Connector Technology Co ltd
Priority date: 2024-10-31
Filing date: 2024-10-31
Publication date: 2025-02-11

Abstract

The present application relates to an injection mold. It includes: a front mold mechanism, including a first front mold and a second front mold connected in a sliding manner along a first direction, and a glue injection hole is provided on the first front mold; a rear mold mechanism, including a first rear mold, a second rear mold and a third rear mold stacked in sequence, the third rear mold contacts the second front mold and a cavity is formed between the two, and the first rear mold and the second rear mold, the second rear mold and the third rear mold, and the third rear mold and the second front mold can all slide relative to each other along the first direction; a threading mechanism, including a thread axis and a core puller, the core puller is fixedly connected to the first rear mold and slidably penetrates the second rear mold and the third rear mold, and the thread axis is rotatably connected to the second rear mold and slidably penetrates the third rear mold; an inner position mechanism, including a fixed seat, an inner shovel and an inner slide; and an outer position mechanism, including an outer shovel and an outer slide, so as to improve the production efficiency of the injection mold for the product.

Description

Injection mold

Technical Field

The application relates to the technical field of injection molds, in particular to an injection mold.

Background

The injection mold has very wide application in the plastic molding technical field, and some products have complicated internal knot and external structure simultaneously, to traditional injection mold, generally be difficult to once only take shape to the internal structure and the external structure of product, after injection mold carries out primary processing to the product, still need carry out secondary operation with final shaping product to the product through other equipment. Therefore, the conventional injection mold generally has a defect of low production efficiency of the product.

Disclosure of Invention

The application solves the technical problem of how to improve the production efficiency of the injection mold on products.

An injection mold, comprising:

the front mold mechanism comprises a first front mold and a second front mold which are connected in a sliding manner along a first direction, and the first front mold is provided with a glue injection hole;

The rear mold mechanism comprises a first rear mold, a second rear mold and a third rear mold which are sequentially overlapped, wherein the third rear mold is contacted with the second front mold, a cavity is formed between the first rear mold and the second front mold, and the first rear mold, the second rear mold, the third rear mold and the second front mold can slide relatively along the first direction;

The tooth twisting mechanism comprises a tooth shaft and a core pulling mechanism, the core pulling mechanism is fixedly connected with the first rear module and is arranged in the second rear module and the third rear module in a sliding penetrating manner, and the tooth shaft is rotatably connected with the second rear module and is arranged in the third rear module in a sliding penetrating manner;

the inner slide mechanism comprises a fixed seat, an inner shovel and an inner slide piece, the fixed seat is fixedly connected with the second front module, the inner shovel is fixedly connected with the first front module and is arranged in the fixed seat in a sliding penetrating manner, and the inner shovel drives the inner slide piece to slide relative to the fixed seat along a second direction perpendicular to the first direction so as to be far away from the cavity; And

The outer slide part is driven by the outer shovel machine to slide along the second direction relative to the third rear module so as to be far away from the cavity.

In one embodiment, the wringing mechanism further comprises a driving shaft, a driving gear and a driven gear, wherein the driving shaft is rotationally connected with the first rear module and the second rear module, the driving gear is fixedly sleeved on the driving shaft and meshed with the driven gear, and the driven gear is fixedly sleeved on the tooth shaft.

In one embodiment, the dental axle comprises a shaft portion and a convex ring, the convex ring is sleeved on the shaft portion, the shaft portion is rotatably connected with the second rear module, and the second rear module is abutted between the driven gear and the convex ring.

In one embodiment, the shaft portion comprises a cylindrical section and a conical section, the cross-sectional dimension of the cylindrical section being constant and in rotational connection with the second rear module, and the conical section decreasing in cross-sectional dimension and in sliding connection with the third rear module, in the direction of the cylindrical section pointing towards the conical section.

In one embodiment, the number of the tooth shafts is a plurality, and the driven gears on the plurality of tooth shafts are all meshed with the driving gear.

In one embodiment, the loose core sliding sleeve is arranged in the dental shaft.

In one embodiment, the fixed seat is provided with a containing hole and a sliding hole which are communicated with each other, the inner shovel comprises an inner fixing part and an inner guiding part, the inner guiding part is provided with a first inclined surface, the inner guiding part is convexly arranged on the first inclined surface, the inner sliding part is provided with a second inclined surface, the second inclined surface is provided with an inner guiding cavity which is in sliding fit with the inner guiding part, the first inclined surface and the second inclined surface can be in contact with each other, the first inclined surface and the second inclined surface and the inner guiding cavity both extend along a direction which forms an acute angle with the first direction, the front mould mechanism points to the rear mould mechanism along the first direction, the distance from the first inclined surface to the central axis of the fixed seat is gradually reduced, the inner fixing part is in sliding fit with the containing hole along the first direction, and the inner guiding part is in sliding fit with the inner guiding cavity along the second direction.

In one embodiment, the outer shovel comprises an outer fixing part and an outer guiding part, the outer fixing part is fixedly connected with the second front module, the outer fixing part is provided with a first inclined surface, the outer guiding part is convexly arranged on the first inclined surface, the outer sliding part is provided with a second inclined surface, an outer guiding cavity in sliding fit with the outer guiding part is concavely formed on the second inclined surface, the first inclined surface and the second inclined surface can be mutually contacted, both the first inclined surface and the second inclined surface and the outer guiding cavity extend along the direction of an acute angle with the first direction, the front module points to the rear module along the first direction, and the distance from the first inclined surface to the cavity is gradually increased.

In one embodiment, the outer guide cavity is provided with a first guide surface and a second guide surface which are arranged in parallel, the first guide surface and the first inclined surface extend in the same direction, the first guide surface is closer to the cavity than the second guide surface, and in a die clamping state, the outer guide part is in contact with the first guide surface and is spaced from the second guide surface by a set distance.

In one embodiment, the rear mold mechanism further includes an elastic member abutting between the second rear mold member and the third rear mold member.

The technical effect of one embodiment of the application is that the inner structure and the outer structure of different positions of the product can be molded on the same injection mold in view of the dental axis, the loose core, the fixed seat, the inner sliding part and the outer sliding part, so that the outer structure and the inner structure of the product are molded at one time through the same injection mold, the outer structure and the inner structure of the product are effectively prevented from being molded through a plurality of different devices, the transfer time and the processing time of the product among different devices are reduced, and the production efficiency of the injection mold on the product is improved.

Drawings

Fig. 1 is a schematic perspective sectional structure of a product.

Fig. 2 is a schematic perspective view of an injection mold according to an embodiment.

Fig. 3 is a schematic diagram of a first example exploded structure of the injection mold of fig. 1.

Fig. 4 is a schematic diagram of a second example exploded structure of the injection mold of fig. 1.

Fig. 5 is a schematic perspective sectional view of the injection mold in the first position shown in fig. 1.

Fig. 6 is a schematic perspective sectional view of the injection mold in the second position shown in fig. 1.

Fig. 7 is a schematic perspective sectional structure of a tooth twisting mechanism and an internal slide mechanism in the injection mold of fig. 1.

Fig. 8 is a schematic perspective sectional structure of a dental axis in the injection mold of fig. 1.

Fig. 9 is a schematic perspective sectional view of the injection mold of fig. 1 after the tooth twisting mechanism and the internal slide mechanism are disassembled.

Fig. 10 is an exploded view of the internal row structure of the injection mold of fig. 1.

Fig. 11 is a schematic perspective sectional structure of fig. 10.

Fig. 12 is a schematic perspective sectional view of the injection mold in the third position shown in fig. 1.

Fig. 13 is a schematic perspective view of an external positioning mechanism in the injection mold of fig. 1.

Fig. 14 is an exploded view of the alien mechanism of fig. 13.

Fig. 15 is a schematic perspective cross-sectional view of the alien mechanism of fig. 13.

Reference numerals are made to the injection mold 10, the product 20, the outer back-off 21, the inner back-off 22, the screw 23, the screw 101, the guide post 102, the cavity 11, the front mold mechanism 100, the first front mold piece 110, the injection hole 111, the second front mold piece 120, the rear mold mechanism 200, the first rear mold piece 210, the second rear mold piece 220, the third rear mold piece 230, the elastic member 240, the tooth mechanism 300, the tooth shaft 310, the shaft portion 311, the cylindrical section 3111, the tapered section 3112, the collar 312, the core-pulling 320, the driving shaft 330, the driving gear 340, the driven gear 350, the inner slide mechanism 400, the fixing seat 430, the receiving hole 431, the slide hole 432, the inner blade 410, the inner fixing portion 411, the first inclined surface 4111, the inner slide 420, the second inclined surface 421, the inner guide chamber 422, the outer slide mechanism 500, the outer blade 510, the outer fixing portion 511, the first inclined surface 5111, the outer slide 520, the second inclined surface 521, the outer guide chamber 522, the first inclined surface 5221, and the second guide surface 5222.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, they may be fixedly connected, detachably connected or integrally formed, mechanically connected, electrically connected, directly connected or indirectly connected through an intermediate medium, and communicated between two elements or the interaction relationship between two elements unless clearly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

Referring to fig. 1,2, 3 and 4, an injection mold 10 according to an embodiment of the present application is used for injection molding a product 20, and the product 20 has an outer undercut 21, an inner undercut 22, threads 23, and the like. The injection mold 10 includes a front mold mechanism 100, a rear mold mechanism 200, a tooth twisting mechanism 300, an inner slide mechanism 400, and an outer slide mechanism 500.

Referring to fig. 2, 5 and 6, in some embodiments, the front mold mechanism 100 includes a first front mold 110 and a second front mold 120, the first front mold 110 and the second front mold 120 are stacked on each other, and the first front mold 110 is provided with a glue injection hole 111. The first front mold 110 and the second front mold 120 are slidably coupled in a first direction, for example, the first front mold 110 and the second front mold 120 may be slidably coupled by slidably engaging the guide posts 102 with the holes. The first front mold 110 can be slid with respect to the second front mold 120 to be pulled apart by a certain distance such that there is a certain distance between the first front mold 110 and the second front mold 120 in the first direction, and the maximum distance between the sliding of the first front mold 110 and the second front mold 120 can be limited by the screw 101.

Referring to fig. 2, 5 and 6, in some embodiments, the rear mold mechanism 200 includes a first rear mold 210, a second rear mold 220 and a third rear mold 230, which are sequentially stacked such that the second rear mold 220 is stacked between the first rear mold 210 and the third rear mold 230. The third rear mold 230 is in contact with the second front mold 120 such that the cavity 11 is formed between the third rear mold 230 and the second front mold 120. The cavity 11 is communicated with the glue injection hole 111, and the molten plastic solution is injected into the cavity 11 through the glue injection hole 111. It is understood that the first rear mold 210, the second rear mold 220, the third rear mold 230, the second front mold 120, and the first front mold 110 are sequentially stacked in the first direction. The first rear mold 210 and the second rear mold 220 are slidably coupled in a first direction, for example, the first rear mold 210 and the second rear mold 220 may be slidably coupled by means of a sliding fit of the guide post 102 and the hole, and the first rear mold 210 may be slidably moved apart from the second rear mold 220 by a certain distance, so that a certain interval is provided between the first rear mold 210 and the second rear mold 220 in the first direction, and a maximum interval between sliding of the first rear mold 210 and the second rear mold 220 may be limited by the screw 101. The second rear mold 220 and the third rear mold 230 are slidably coupled in a first direction, for example, the second rear mold 220 and the third rear mold 230 may be slidably coupled by means of a guide post 102 and a hole, and the second rear mold 220 may be slidably pulled apart from the third rear mold 230 by a certain distance, so that a certain interval is provided between the second rear mold 220 and the third rear mold 230 in the first direction, and a maximum interval between sliding of the second rear mold 220 and the third rear mold 230 may be limited by the screw 101. The third rear mold 230 and the second front mold 120 are slidably coupled in a first direction, for example, the third rear mold 230 and the second front mold 120 may be slidably coupled by sliding the guide posts 102 and the holes, and the third rear mold 230 may be slidably pulled apart from the second front mold 120 by a certain distance, so that a certain distance is provided between the third rear mold 230 and the second front mold 120 in the first direction.

Referring to fig. 12, in some embodiments, the rear mold mechanism 200 further includes an elastic member 240, and the elastic member 240 abuts between the second rear mold member 220 and the third rear mold member 230. For example, the second rear mold 220 and/or the third rear mold 230 may have mounting holes, in other words, only the second rear mold 220 may have mounting holes, only the third rear mold 230 may have mounting holes, and the second rear mold 220 and the third rear mold 230 may have mounting holes at the same time, in which the elastic member 240 is accommodated. At the time of mold closing, the elastic member 240 is compressed to store energy. When the first rear mold 210 and the second rear mold 220 are pulled apart by a certain distance by the relative sliding of the first rear mold 220 and the second rear mold 230 by the external force, the elastic member 240 releases the energy, thereby pushing the second rear mold 220 and the third rear mold 230 to slide apart by a certain distance.

Referring to fig. 4, 6 and 7, in some embodiments, the hinge mechanism 300 includes a hinge 310 and a core back 320, one end of the core back 320 is fixedly connected to the first rear mold part 210, and the core back 320 is slidably inserted into the second rear mold part 220 and the third rear mold part 230, so that the core back 320 can slide in a first direction with respect to the second rear mold part 220 and the third rear mold part 230. The dental axle 310 is rotatably connected to the second rear mold 220, and the dental axle 310 is slidably disposed in the third rear mold 230, it being understood that the dental axle 310 may also rotate relative to the third rear mold 230. That is, the dental axis 310 can rotate with respect to the second rear mold 220 and the third rear mold 230 at the same time, and when the second rear mold 220 and the third rear mold 230 slide with respect to each other, the dental axis 310 slides with respect to the third rear mold 230. The dental axle 310 extends into the cavity 11 to shape the thread 23 configuration on the product 20.

Referring to fig. 4, 6 and 7, the wringer mechanism 300 further includes a drive shaft 330, a drive gear 340 and a driven gear 350. The driving shaft 330 is rotatably connected with the first rear mold 210 and the second rear mold 220, the driving gear 340 is fixedly sleeved on the driving shaft 330, the driven gear 350 is fixedly sleeved on the tooth shaft 310, and the driving gear 340 and the driven gear 350 are meshed with each other. When the driving shaft 330 rotates, the driving shaft 330 rotates to drive the dental shaft 310 through the driving gear 340 and the driven gear 350. The spindle 310 has a thread 23 configuration thereon, and when the spindle 310 is rotated, the thread 23 configuration on the spindle 310 may form the thread 23 configuration on the product 20. The number of the tooth shafts 310 may be multiple, and the driven gears 350 on the tooth shafts 310 are engaged with the same driving gear 340 on the driving shaft 330, that is, the driving shaft 330 may drive the tooth shafts 310 to rotate simultaneously, so that different tooth shafts 310 may form the screw thread 23 structures on different products 20, so that the same injection mold 10 may simultaneously form a plurality of products 20, thereby improving the production efficiency of the injection mold 10.

Referring to fig. 7, 8 and 9, in some embodiments, dental shaft 310 includes a shaft portion 311 and a collar 312, collar 312 being sleeved over shaft portion 311 such that collar 312 protrudes a length in a radial direction of shaft portion 311 relative to shaft portion 311. The shaft portion 311 is rotatably connected to the second rear mold 220 and the third rear mold 230, and the shaft portion 311 is slidable with respect to the third rear mold 230. When the shaft 311 is inserted into the second rear mold 220, the second rear mold 220 is abutted between the driven gear 350 and the collar 312 along the first direction, so that the shaft 311 cannot slide along the first direction relative to the second rear mold 220 due to the limiting action of the driven gear 350 and the collar 312, and the entire dental axle 310 will slide along the first direction relative to the third rear mold 230 along the second rear mold 220.

Referring to fig. 7, 8 and 9, in some embodiments, the core back 320 is slidably sleeved in the dental shaft 310, so that the dental shaft 310 can rotate relative to the core back 320 and also can slide relative to the core back 320. The core back 320 is protruded into the cavity 11 so that the core back 320 forms the inner structure of the product 20. By slidably sleeving the core-pulling 320 on the tooth shaft 310, the core-pulling 320 can fully utilize the space in the tooth shaft 310, and the space occupied by the whole tooth twisting mechanism 300 is reduced, so that the compact design of the injection mold 10 in structure is realized.

Referring to fig. 7, 8 and 9, during the mold opening process, when the first rear mold part 210 slides away from the second rear mold part 220 in the first direction, in view of the fixed connection of the core back 320 and the first rear mold part 210, the core back 320 and the first rear mold part 210 will slide synchronously, i.e. the first rear mold part 210 will drive the core back 320 to slide relative to the dental axis 310 to move away from the product 20, and after the first rear mold part 210 and the second rear mold part 220 are pulled apart by a certain distance, the core back 320 will be completely separated from the product 20. During the sliding of the first rear mold part 210 away from the second rear mold part 220, the driving shaft 330 may be rotated, which in turn may cause the driving shaft 330 to rotate through the driving gear 340 and the driven gear 350 to drive the dental axis 310, which dental axis 310 will form the screw 23 mechanism of the product 20 during the rotation. Under the action of the elastic member 240, the elastic member 240 drives the second rear mold member 220 to slide away from the third rear mold member 230, so that the dental axle 310 rotates and slides simultaneously with respect to the third rear mold member 230, and the dental axle 310 gradually withdraws from the product 20 while forming the thread 23 structure of the product 20. After the second rear mold 220 and the third rear mold 230 are pulled apart by a certain distance, the dental axis 310 is completely separated from the product 20.

Referring to fig. 7, 8 and 9, in some embodiments, shaft portion 311 includes a cylindrical section 3111 and a tapered section 3112, with the cross-sectional dimension of cylindrical section 3111 being constant and the cross-sectional dimension of tapered section 3112 being progressively smaller along the direction of cylindrical section 3111 toward tapered section 3112. Cylindrical segment 3111 may be rotatably coupled to second rear mold 220, and tapered segment 3112 may be slidably coupled to third rear mold 230. By providing the tapered section 3112 during the process of gradually withdrawing the dental axis 310 from the product 20, the contact area and frictional resistance between the tapered section 3112 and the third rear mold 230 can be gradually reduced, so that the dental axis 310 is rapidly separated from the product 20 on the one hand, thereby improving the demolding efficiency and the production efficiency of the product 20. On the other hand, the damage to the product 20 caused by the pulling of the dental axle 310 on the product 20 can be avoided, so that the molding quality of the product 20 is improved.

Referring to fig. 7, 9, 10, and 11, in some embodiments, the inner slide mechanism 400 includes a fixed mount 430, an inner shovel 410, and an inner slide 420. The fixing base 430 is fixedly connected with the second front module 120, the inner shovel 410 is fixedly connected with the first front module 110, and the inner shovel 410 is slidably inserted into the fixing base 430 along the first direction. The holder 430 may be used to shape the internal structure of the product 20. The inner shovel 410 is capable of driving the inner slide 420 to slide relative to the fixed seat 430 away from the cavity 11 in a second direction, which is perpendicular to the first direction, which is understood to be the vertical direction in the drawing, and which is understood to be the horizontal direction in the drawing. The inner slide 420 may be used to shape the undercut 22 in the product 20 and, after the inner slide 420 is moved away from the product 20 in the second direction, the inner slide 420 may be removed from interfering with the product 20 in the first direction so that the product 20 can be moved in the first direction to disengage from the cavity 11. When the first front module 110 slides relative to the second front module 120 to pull apart, the inner shovel 410 will move synchronously with the first front module 110, so that the inner shovel 410 slides in the first direction relative to the fixed base 430. When the second front mold 120 slides to draw away from the third rear mold 230, the fixing base 430 moves synchronously with the second front mold 120, so that the fixing base 430 gradually withdraws from the product 20.

Referring to fig. 7, 9, 10 and 11, in some embodiments, the fixing base 430 is provided with a receiving hole 431 and a sliding hole 432, and the sliding hole 432 is communicated with the receiving hole 431 and the cavity 11. The inner shovel 410 includes an inner fixing portion 411 and an inner guiding portion 412, the inner fixing portion 411 is fixedly connected with the first front module 110, the inner fixing portion 411 has a first inclined surface 4111, and the inner guiding portion 412 is disposed on the first inclined surface 4111 in a protruding manner. The inner slider 420 has a second inclined surface 421, an inner guide cavity 422 is concavely formed on the second inclined surface 421, the first inclined surface 4111 and the second inclined surface 421 can contact each other, and the extending directions of the first inclined surface 4111 and the second inclined surface 421 and the inner guide cavity 422 are the same, and the extending directions are acute angles to the first direction, that is, the first inclined surface 4111, the second inclined surface 421 and the inner guide cavity 422 are inclined with respect to the first direction. The distance from the first inclined surface 4111 to the central axis of the fixing base 430 gradually decreases from the front mold mechanism 100 toward the rear mold mechanism 200 in the first direction. The inner fixing portion 411 is slidably engaged with the receiving hole 431 along the first direction, the inner guide portion 412 is slidably engaged with the inner guide cavity 422, the inner slider 420 is slidably engaged with the sliding hole 432 along the second direction, a portion of the inner slider 420 may be received in the receiving hole 431, and another portion of the inner slider 420 may extend into the cavity 11 through the sliding hole 432 to form the inner undercut 22 of the product 20.

Referring to fig. 7, 9, 10 and 11, during the mold opening process, the first front mold 110 may slide relative to the second front mold 120, so that the first front mold 110 drives the inner fixing portion 411 and the entire inner shovel 410 to slide along the first direction relative to the fixing base 430, and the inner guiding portion 412 slides along the direction forming an acute angle with the first direction relative to the inner sliding member 420 under the action of the inner guiding cavity 422 disposed obliquely relative to the first direction, so that the inner guiding portion 412 can generate a component force on the inner sliding member 420 along the second direction, and then the inner sliding member 420 gradually withdraws from the product 20. When the first front mold 110 stops sliding relative to the second front mold 120, the inner slide 420 will completely withdraw from the product 20, eliminating interference of the inner slide 420 with the product 20 in the first direction, so that the holder 430 can slide relative to the product 20 in the first direction. It will be appreciated that the inner slide 420 will interfere with the formation of the product 20 in the first direction before the inner slide 420 is withdrawn from the product 20, such that the anchor block 430 cannot slide in the first direction relative to the product 20 to withdraw the product 20. By the interaction of the first inclined surface 4111 and the second inclined surface 421, a good clearance space can be provided for the sliding of the inner slide member 420 in the second direction, and the inner slide member 420 is prevented from being jammed during the sliding process.

Referring to fig. 12, 13,14 and 15, in some embodiments, the layup mechanism 500 includes an outer blade 510 and an outer slide 520, the outer blade 510 being fixedly coupled to the second front mold piece 120, the outer blade 510 driving the outer slide 520 to slide in a second direction relative to the third rear mold piece 230 away from the cavity 11. The outer slider 520 is used to shape the outer undercut 21 of the product 20. The outer shovel 510 includes an outer fixing portion 511 and an outer guiding portion 512, the outer fixing portion 511 is fixedly connected with the second front module 120, the outer fixing portion 511 has a first inclined surface 5111, and the outer guiding portion 512 is convexly disposed on the first inclined surface 5111. The outer slider 520 has a second inclined surface 521, an outer guiding cavity 522 is concavely formed on the second inclined surface 521, the first inclined surface 5111 and the second inclined surface 521 can contact each other, the extending directions of the first inclined surface 5111 and the second inclined surface 521 and the outer guiding cavity 522 are the same, and the extending directions are acute angles with the first direction, that is, the first inclined surface 5111, the second inclined surface 521 and the outer guiding cavity 522 are obliquely arranged relative to the first direction. The distance from the first inclined surface 5111 to the cavity 11 gradually increases from the front mold mechanism 100 toward the rear mold mechanism 200 in the first direction.

Referring to fig. 12, 13, 14 and 15, during the mold opening process, the second front mold 120 may be slid relative to the third rear mold 230, so that the second front mold 120 drives the inner fixing portion 411 and the entire outer shovel 510 to slide relative to the third rear mold 230 along the first direction, and the outer guiding portion 512 slides relative to the outer sliding member 520 along a direction forming an acute angle with the first direction by the action of the outer guiding cavity 522 inclined with respect to the first direction, so that the outer guiding portion 512 can generate a component force on the inner sliding member 420 along the second direction, and then the inner sliding member 420 gradually withdraws from the product 20. When the second front mold 120 stops sliding relative to the second front mold 120, the outer slide 520 will completely withdraw from the product 20, eliminating interference of the outer slide 520 with the product 20 in the first direction, and thus the product 20 is separated from the outer slide 520. By the interaction of the first inclined surface 5111 and the second inclined surface 521, a good clearance space can be provided for the sliding of the outer sliding member 520 in the second direction, so as to avoid the jamming phenomenon of the outer sliding member 520 in the sliding process.

Referring to fig. 12, 13, 14 and 15, in some embodiments, the outer guide cavity 522 has a first guide surface 5221 and a second guide surface 5222, the first guide surface 5221 and the second guide surface 5222 are disposed in parallel, and both the first guide surface 5221 and the second guide surface 5222 are the same as the extending direction of the first angled surface 5111 such that the first guide surface 5221 is also disposed in parallel with the first angled surface 5111. The first guide surface 5221 and the second guide surface 5222 are spaced apart from each other in the sliding direction of the outer slide 520, that is, the first guide surface 5221 and the second guide surface 5222 are spaced apart from each other in the second direction, and the first guide surface 5221 is closer to the cavity 11 than the second guide surface 5222. In the mold clamping state, the outer guide portion 512 contacts the first guide surface 5221 and is spaced apart from the second guide surface 5222 by a set distance.

It will be appreciated that during sliding of the second front mold 120 relative to the third rear mold 230, the holder 430 will immediately slide relative to the product 20. Specifically, in view of the fact that, in the mold closing state, the outer guide portion 512 is in contact with the first guide surface 5221 and is spaced from the second guide surface 5222 by a set distance, before the outer guide portion 512 is in contact with the second guide surface 5222, the outer guide portion 512 cannot generate a component force along the second direction on the outer sliding member 520, so that the outer sliding member 520 cannot slide relative to the third rear mold member 230 to be away from the product 20, that is, a certain delay is generated in sliding of the outer sliding member 520, so that the outer sliding member 520 still plays a holding role on the product 20, and thus, the relative movement between the fixing seat 430 and the product 20 can be ensured, and the fixing seat 430 is ensured to be smoothly separated from the product 20. After the relative sliding between the fixing base 430 and the product 20 occurs, when the outer guiding portion 512 contacts the second guiding surface 5222, the outer guiding portion 512 will generate a component force along the second direction to the outer sliding portion, so the outer sliding member 520 will slide away from the product 20 relative to the third rear module 230, such that the product 20 is separated from the outer sliding member 520.

The working principle of the injection mold 10 is described as follows:

in the first step, the injection mold 10 is closed, and a molten plastic solution is injected into the cavity 11 through the injection hole 111, and the molten plastic solution is gradually cooled under a certain pressure, so that the molten plastic solution is solidified to form the product 20.

In the second step, the first front mold 110 slides relative to the second front mold 120, and the first front mold 110 drives the inner fixing portion 411 and the entire inner shovel 410 to slide along the first direction relative to the fixing base 430, so that the inner sliding member 420 completely withdraws from the product 20, and interference of the inner sliding member 420 on the product 20 along the first direction is eliminated, so as to lay a foundation for the subsequent fixing base 430 to slide along the first direction relative to the product 20.

In a third step, the first rear mold part 210 is slid away from the second rear mold part 220 in the first direction, and the first rear mold part 210 will drive the core back 320 to slide against the dental axis 310 to be away from the product 20. After the first rear mold 210 and the second rear mold 220 are pulled apart by a certain distance, the core back 320 is completely separated from the product 20. During the sliding process of the first rear mold 210 away from the second rear mold 220, the driving shaft 330 may be rotated, and the elastic member 240 drives the second rear mold 220 to slide away from the third rear mold 230 under the action of the elastic member 240, so that the dental axle 310 rotates and slides simultaneously with respect to the third rear mold 230, so that the dental axle 310 gradually withdraws from the product 20 while forming the thread 23 structure of the product 20. After the second rear mold 220 and the third rear mold 230 are pulled apart by a certain distance, the dental axis 310 is completely separated from the product 20.

In the fourth step, the second front mold 120 slides relative to the third rear mold 230, and the outer slider 520 holds the product 20, so that the fixing base 430 can slide relative to the product 20, and the product 20 can be separated from the fixing base 430. When the outer guide portion 512 contacts the first guide surface 5221, the outer guide portion 512 will generate a force component in the second direction to the outer slide, and the outer slide 520 will slide away from the product 20 relative to the third rear module 230, such that the product 20 is disengaged from the outer slide 520. Thus achieving smooth demolding of the product 20.

In view of the fact that the dental axis 310, the core-pulling 320, the fixing seat 430, the inner sliding member 420 and the outer sliding member 520 can form the inner structure and the outer structure of the product 20 at different positions on the same injection mold 10, the outer structure and the inner structure of the product 20 are formed at one time through the same injection mold 10, the outer structure and the inner structure of the product 20 are effectively prevented from being formed through a plurality of different devices, and therefore transfer time and processing time of the product 20 between different devices are reduced, and production efficiency of the injection mold 10 to the product 20 is improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. An injection mold, comprising:

2. The injection mold of claim 1, wherein the wringing mechanism further comprises a drive shaft, a drive gear and a driven gear, the drive shaft is rotatably connected with the first rear mold piece and the second rear mold piece, the drive gear is fixedly sleeved on the drive shaft and meshed with the driven gear, and the driven gear is fixedly sleeved on the tooth shaft.

3. The injection mold of claim 2, wherein the dental arbor comprises an arbor portion and a collar, the collar is sleeved on the arbor portion, the arbor portion is rotatably connected to the second rear mold piece, and the second rear mold piece is abutted between the driven gear and the collar.

4. An injection mold according to claim 3, wherein the shaft portion comprises a cylindrical section and a conical section, the cross-sectional dimension of the cylindrical section being constant and rotationally coupled to the second rear mold member, and the conical section being reduced in cross-sectional dimension and slidingly coupled to the third rear mold member, in a direction in which the cylindrical section points toward the conical section.

5. The injection mold of claim 2, wherein the number of said shafts is plural, and said driven gears on the plural shafts are each engaged with said driving gear.

6. The injection mold of claim 1, wherein the loose core slide sleeve is disposed in the dental shaft.

7. The injection mold of claim 1, wherein the fixed seat is provided with a containing hole and a sliding hole which are communicated with each other, the inner shovel comprises an inner fixing part and an inner guiding part, the inner guiding part is provided with a first inclined surface in a protruding mode, the inner guiding part is provided with a second inclined surface in a protruding mode, the second inclined surface is provided with an inner guiding cavity which is in sliding fit with the inner guiding part, the first inclined surface and the second inclined surface can be in contact with each other, the first inclined surface and the second inclined surface and the inner guiding cavity extend along a direction which forms an acute angle with the first direction, the front mold mechanism is directed to the rear mold mechanism along the first direction, the distance from the first inclined surface to the central axis of the fixed seat is gradually reduced, the inner fixing part is in sliding fit with the containing hole along the first direction, the inner guiding part is in sliding fit with the sliding hole along the second direction, and the inner guiding part is in sliding fit with the inner guiding cavity.

8. The injection mold of claim 1, wherein the outer spade machine comprises an outer fixed portion and an outer guide portion, the outer fixed portion is fixedly connected with the second front mold piece, the outer fixed portion is provided with a first inclined surface, the outer guide portion is convexly arranged on the first inclined surface, the outer sliding piece is provided with a second inclined surface, an outer guide cavity in sliding fit with the outer guide portion is concavely formed on the second inclined surface, the first inclined surface and the second inclined surface can be in contact with each other, both the first inclined surface and the second inclined surface and the outer guide cavity extend along a direction forming an acute angle with the first direction, the first inclined surface is directed from the front mold mechanism to the rear mold mechanism along the first direction, and the distance from the first inclined surface to the cavity is gradually increased.

9. The injection mold of claim 8, wherein the outer guide cavity has a first guide surface and a second guide surface disposed in parallel, the first guide surface extending in the same direction as the first angled surface, the first guide surface being closer to the cavity than the second guide surface, the outer guide portion being in contact with the first guide surface and spaced from the second guide surface by a set distance in the closed mold state.

10. The injection mold of claim 1, wherein the back mold mechanism further comprises a resilient member that abuts between the second back mold member and the third back mold member.