CN223644202U - An injection mold for an internal thread product - Google Patents

Abstract

This utility model relates to the field of injection mold technology, and more specifically, to an injection mold for internal thread products, comprising: a fixed mold plate, a first mold core, a second mold core, a movable mold plate, a drive assembly, a rotating component, a threaded core, a core pressure plate, a displacement mold plate, a third mold core, a heat-conducting component, a cooling water channel, a limiting rod, and an inclined lever connected to the displacement mold plate. The second mold core has an inclined hole that mates with the inclined lever. The heat-conducting component is slidably connected to the threaded core, and the cooling water channel is connected to the heat-conducting component. The heat-conducting component is fixed relative to the third mold core, thus ensuring the sealing of the cooling water channel and allowing the heat from the threaded core to be conducted to the heat-conducting component, where the cooling water carries the heat away. This effectively ensures cooling of the injection-molded product, improves cooling efficiency, and enhances the production efficiency and quality of the injection-molded product.

Description

Injection mold of internal thread product

Technical Field

The utility model relates to the technical field of injection molds, in particular to an injection mold for an internal thread product.

Background

To the double-end internal thread PVC electric wire coupling that wire pipe trade used often, the product inner wall design has whole section longer continuous internal thread, screw thread core can only deviate from one side hank tooth when its mould shaping, and screw thread core receives the parcel of longer high temperature injection molding melt adhesive generally, frictional force that produces when adding hank tooth, screw thread core's temperature is higher during the drawing of patterns, and screw thread core under the rotation operating mode is to be introduced traditional mode when cooling water route, be difficult to realize cooling water seal, adopt expensive screw sealing mechanism also be difficult to guarantee the leakproofness of water route when rotatory, screw thread core is unable to set up traditional cooling water route and cool off promptly, and then can appear the unable timely cooling of plastic part and glue the mould, the rotten problem of internal tooth hank, core die. At present, the production can only enable the threaded mold core to be subjected to natural air cooling to continue the next molding through prolonging the production period, so that the production efficiency is reduced, the residence time of the injection molding melt adhesive in a gun barrel of an injection molding machine is too long, and further the carbonization and decomposition of the injection molding melt adhesive can occur, so that the product quality is seriously affected.

The existing injection mold generally cannot realize the formation of the inner wall with longer internal threads, and generally adopts the formation of double threads at two ends, so that the reliability of product connection is relatively poor. In addition, the long internal thread pipe joint is formed, the conventional method is to separate two ends of the twisted teeth for demolding, so that the teeth at the joint and the contact position of the two thread cores cannot be connected in a flush manner, the twisted teeth are not smooth during product assembly, and the screw teeth are blocked at the dislocation position and cannot be assembled. In addition, the mould thread core can be naturally cooled only in an air cooling mode, so that stable production is difficult to realize in the mode, the production period is longer, the period of 20% is increased per mould compared with that of a normal product, the produced product is serious in yellowing, and the product quality is low.

Disclosure of utility model

The utility model provides an injection mold for an internal thread product, which aims to overcome the defects that in the prior art, a mold core cannot be cooled well during injection molding of a product with a longer internal thread, so that the production period is long and the product quality is low.

The technical scheme includes that the injection mold comprises a fixed mold plate, a first mold core connected with the fixed mold plate, a second mold core connected with the first mold core in a sliding mode, a movable mold plate, a driving assembly connected with the movable mold plate, a rotating piece connected with the driving assembly, a threaded mold core connected with the rotating piece in an axial sliding mode, a mold core pressing plate connected with the movable mold plate, a displacement mold plate connected with the mold core pressing plate in a sliding mode, a third mold core connected with the displacement mold plate, a heat conducting piece connected with the third mold core, a cooling water channel penetrating through the displacement mold plate and the third mold core and connected with the heat conducting piece, a limiting rod penetrating through the displacement mold plate and connected with the mold core pressing plate, and an inclined deflector connected with the displacement mold plate, wherein one end of the threaded mold core is provided with a threaded portion penetrating through the heat conducting piece and extending into the first mold core, the second mold core, the third mold core, the heat conducting piece, the mold core and the threaded mold core are in sliding mode, the threaded mold core and the threaded mold core pressing plate are in a sliding mode, and the threaded mold core is in a mutual matching mode, and the threaded mold core pressing plate is in a sliding mode, and the length of the threaded mold core pressing plate is matched with the threaded mold core pressing plate is in a radial mode, and the threaded mold cavity is in a large, and the length is matched with the threaded mold cavity is in a sliding mode, and the mold cavity is in a sliding mode.

The fixed die plate is fixedly arranged on the injection molding equipment, the first die core and the second die core are both arranged on the fixed die plate, the movable die core is arranged on a barrel of the injection molding equipment, and the injection molding equipment is injected into a die cavity through the barrel via the movable die core. One side of the fixed template is fixedly provided with a first die core, a second die core is arranged in a sliding manner relative to the fixed template, when the die is assembled, the second die core is stirred by an inclined deflector rod arranged on one side of the movable template so as to slide and gather from two sides to the middle, and when the die is opened, the two sides are opened in a sliding manner, and then an injection molding product is taken out; one side of the movable mould plate, one end of the threaded core is slidably connected with the threaded core, the other end of the threaded core is provided with a threaded part, the threaded part on the threaded core penetrates through the heat conducting piece and stretches into the first mould core, the threaded part on the threaded core is a part of a mould cavity, the core pressing plate abuts against the threaded core during mould closing, the tightness of the mould core is kept, during mould opening, the movable mould plate, the core pressing plate and the limiting rod move outwards together for a distance, the distance is longer than the length of an injection moulding product, after the movable mould plate moves, gaps are reserved between the end of the threaded core and the movable mould plate, and between the movable mould plate and the movable mould plate, at the moment, the rotating piece is still connected with the threaded core, the limiting distance of the limiting rod is not reached during movement, the movable mould plate is still connected with the fixed mould plate, then the rotating piece is driven to rotate, the threaded core is further moved outwards under the action of threads, and is separated from the injection moulding product, during mould opening is continued, the movable mould plate, the core pressing plate and the limiting rod move outwards continuously, at the moment, the limiting rod also drives the movable mould plate to move together, the inclined deflector rod, the second mould core is moved, and the two sides of the injection moulding product are taken out, and the injection moulding product is completed once. Simultaneously, the screw thread core runs through the heat conduction spare, can be with the heat conduction of moulding plastics melt adhesive to the heat conduction spare on, foretell whole die sinking in-process, cooling water circulation cooling water all the time, the heat of moulding plastics melt adhesive is through the heat conduction of screw thread core and heat conduction spare to the cooling water of cooling water, and then the cooling water can take away the heat fast, and then shortens the die sinking time, avoids appearing the condition of product yellowing and the carbonization of gun barrel internal melt adhesive, guarantees product quality.

Preferably, the threaded mold core is provided with a mounting hole penetrating through two ends of the threaded mold core, a supporting rod and a first elastic piece are respectively arranged in the mounting hole, the mounting hole is close to one end of the movable mold plate and is connected with a machine meter screw, two ends of the first elastic piece are respectively in butt joint with the machine meter screw and the supporting rod, one end of the supporting rod, away from the first elastic piece, is in butt joint with the fixed mold plate, and one end of the mounting hole, close to the fixed mold plate, is provided with a limiting boss for preventing the supporting rod from falling off.

The machine rice screw and the limiting boss limit the first elastic piece and the abutting rod in the mounting hole, the abutting rod abuts against the fixed die plate, when the die-sinking threaded core rotates, the threaded core is easier to separate from an injection molding product under the elastic action of the first elastic piece, so that the threaded core is more smoothly separated, and the product quality is improved.

Preferably, the device further comprises a thimble, a connecting plate, a fixing plate, a push plate, a second elastic piece, wherein the thimble is in sliding connection with the fixed plate, the connecting plate is connected with the fixed plate, the fixing plate is connected with the connecting plate, the push plate is connected with the thimble, the two ends of the second elastic piece are respectively connected with the fixed plate and the push plate, and through holes penetrating through two sides of the fixing plate are formed in the fixing plate.

The push plate is in sliding connection with the ejector pin relative to the fixed template, the connecting plate is used for supplying the fixed template to move for flowing out the space between push plate and the fixed template, the fixed plate is used for being connected with injection molding equipment, and also be used for limiting the displacement of push plate, the through-hole is used for connecting injection molding equipment's ejection mechanism on the fixed plate, and injection molding equipment's ejection mechanism passes through-hole and push plate butt, and then promotes push plate and ejector pin, ejecting product, and then save manual process of taking out injection molding product, further promotes production efficiency.

Preferably, the ejector pin is provided with a first air passage penetrating through two ends of the ejector pin, the push plate is provided with a second air passage communicated with the first air passage, the first air passage is communicated with the mounting hole, the movable mould plate is provided with a third air passage communicated with the mounting hole, the abutting rod is provided with an air passing groove, and the machine rice screw is provided with a first air passing hole penetrating through two ends of the machine rice screw.

External air flow enters from the second air passage in the push plate, then flows through the first air passage in the ejector pin, the air passing groove on the abutting rod, the gap of the first elastic element, the first air passing hole of the machine rice screw and the third air passage in the movable mould plate in sequence, and then flows out from the third air passage, so that heat of the injection molding product and the threaded core can be taken away through the air flow, the heat dissipation capacity of the mould is further improved, the heat dissipation efficiency of the injection molding product is improved, and the generation efficiency of the product is further improved.

Preferably, an abutting portion is arranged at the axis of the top of the thimble, the abutting rod abuts against the abutting portion, second air passing holes penetrating through two ends of the abutting portion are formed in the periphery of the abutting portion, and the first air passage is communicated with the mounting hole through the second air passing holes.

The butt portion is used for with the thimble butt, and the second passes through the gas hole and is used for through the air current, and the butt pole directly butt is on the butt portion of thimble, and the setting of thimble and butt pole of being convenient for makes the thimble top can be as much as possible with the product butt, promotes ejecting effect.

Preferably, an annular sealing element is arranged at the joint of the cooling water channel between the displacement template and the third die core.

The cooling water channel penetrates through the displacement template and the third die core, and an annular sealing piece is arranged at the joint of the cooling water channel of the displacement template and the cooling water channel of the third die core, so that the sealing performance of the cooling water channel can be ensured, and water leakage is avoided.

Preferably, an annular heat dissipation groove is formed in the outer side face of the heat conducting piece, and the cooling water channel is connected with the heat dissipation groove.

The heat dissipation groove is arranged to improve the heat dissipation effect, and is connected with the cooling water channel to improve the cooling effect of the cooling water.

Preferably, the driving assembly comprises a driving motor connected with the movable template, a driving gear connected with the driving motor, and a driven gear rotationally connected with the movable template, wherein the rotating piece is a gear piece, and the driven gear is respectively meshed with the driving gear and the rotating piece.

The driving assembly adopts a driving motor as power, and adopts a driving gear and a driven gear to carry out power transmission, so that the rotation precision of the rotating piece is ensured.

Preferably, the end part of the threaded core is provided with an external spline, the axis of the rotating piece is provided with an internal spline, and the external spline is in sliding connection with the internal spline.

The threaded core is in spline connection with the rotating piece, and a gap is reserved between the external spline and the internal spline, so that sliding between the threaded core and the rotating piece is realized, and the rotating piece can still drive the threaded core to rotate after sliding.

Preferably, the side surfaces of the core pressing plate and the displacement template are connected with a detachable limiting plate.

When the mold is disassembled and transported, the core pressing plate and the displacement template are fixed together through the limiting plate, so that the displacement template is prevented from moving.

Compared with the prior art, the utility model has the beneficial effects that:

1. The heat conducting piece is arranged and is in sliding connection with the threaded mold core, the cooling water channel is connected with the heat conducting piece, the heat conducting piece is fixed relative to the third mold core, the tightness of the cooling water channel is further guaranteed, the heat of the threaded mold core can be conducted onto the heat conducting piece, the heat is taken away by cooling water, the cooling of an injection molding product is further fully guaranteed, the cooling efficiency is improved, and the production efficiency and the quality of the injection molding product are improved;

2. The threaded core is axially and slidably connected with the rotating piece and is radially and relatively fixed, when the mold is opened, the threaded core and the rotating piece slide to leave a gap, and then the rotating piece drives the threaded core to rotate to separate from a product for demolding, and only one threaded core is arranged in a single mold cavity, so that the thread continuity of an injection molding product is ensured, and the product quality is ensured;

3. The first air passage, the second air passage and the third air passage are arranged to cool the threaded mold core to reduce the temperature, so that the cooling efficiency of the injection molding product is further improved, and the production efficiency and quality are improved.

Drawings

FIG. 1 is a schematic view of the overall structure of an injection mold for an internally threaded product according to the present utility model;

FIG. 2 is a schematic view of the mounting structure of a stop lever of an injection mold for an internally threaded product according to the present utility model;

FIG. 3 is a schematic view of the drive assembly of an injection mold for an internally threaded product according to the present utility model;

FIG. 4 is a schematic view of the internal structure of an injection mold for an internally threaded product according to the present utility model;

FIG. 5 is a schematic view of another angular internal structure of an injection mold for an internally threaded product according to the present utility model;

FIG. 6 is a schematic view of the installation structure of a threaded core of an injection mold for internally threaded products according to the present utility model;

FIG. 7 is a schematic view of the structure of a threaded core of an injection mold for internally threaded products of the present utility model;

FIG. 8 is a schematic view of the structure of a butt rod of an injection mold for an internally threaded product according to the present utility model;

FIG. 9 is a schematic view of the structure of an ejector pin of an injection mold for an internally threaded product according to the present utility model;

Fig. 10 is a schematic structural view of a heat conductive member of an injection mold for an internally threaded product according to the present utility model.

The mold comprises a first mold core, a second mold core, 301, inclined holes, 4, a movable mold plate, 401, a third air passage, 5, a driving component, 501, a driving motor, 502, a driving gear, 503, a driven gear, 6, a rotating part, 7, a threaded mold core, 701, a threaded part, 702, a mounting hole, 703, a limiting boss, 8, a mold core pressing plate, 9, a displacement mold plate, 10, a third mold core, 11, a heat conducting part, 1101, a heat radiating groove, 12, a cooling water passage, 13, a limiting rod, 14, an inclined deflector rod, 15, a supporting rod, 1501, an air passing groove, 16, a first elastic part, 17, a machine meter screw, 1701, a first air passing hole, 18, a thimble, 1801, a first air passage, 1802, a supporting part, 1803, a second air passing hole, 19, a connecting plate, 20, a fixed plate, 21, a pushing plate, 2101, a second air passage, 22, a second elastic part, 23, an annular sealing part, 24 and a limiting plate.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent, and certain components of the drawings may be omitted, enlarged or reduced in order to better illustrate the present embodiments, and do not represent the actual product size, and it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.

In the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", "long", "short", etc., which are based on the azimuth or positional relationship shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or elements referred to must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and are not to be construed as limitations of the present patent, and that the specific meanings of the terms described above should be understood by those skilled in the art according to specific circumstances.

The technical scheme of the utility model is further specifically described by the following specific embodiments with reference to the accompanying drawings:

Example 1

1-5, An injection mold for an internal thread product comprises a fixed die plate 1, a first die core 2 connected with the fixed die plate 1, a second die core 3 connected with the first die core 2 in a sliding manner, a movable die plate 4, a driving assembly 5 connected with the movable die plate 4, a rotating member 6 connected with the driving assembly 5, a threaded core 7 connected with the rotating member 6 in an axial sliding manner, a core pressing plate 8 connected with the movable die plate 4, a displacement die plate 9 connected with the core pressing plate 8 in a sliding manner, a third die core 10 connected with the displacement die plate 9, a heat conducting piece 11 connected with the third die core 10, a cooling water channel 12 penetrating through the displacement die plate 9 and the third die core 10 and connected with the heat conducting piece 11, a limit rod 13 penetrating through the displacement die plate 9 and connected with the core pressing plate 8, and an inclined deflector rod 14 connected with the displacement die plate 9; the screw core 7 one end is equipped with screw portion 701, and screw portion 701 runs through heat conduction spare 11 and stretches into in the first mould benevolence 2, second mould benevolence 3, third mould benevolence 10, heat conduction spare 11 and screw core 7 cooperate jointly and form the mould die cavity, core clamp plate 8 and screw core 7 butt when the mould compound die, the length of rotating member 6 and screw core 7 sliding connection part is greater than the length of injection molding product, screw core 7 is radial fixed relative rotating member 6, be equipped with on the second mould benevolence 3 with slope driving lever 14 matched with slope hole 301.

The fixed die plate 1 is fixedly arranged on injection molding equipment, the first die core 2 and the second die core 3 are arranged on the fixed die plate 1, the movable die core is arranged on a barrel of the injection molding equipment, and the injection molding equipment is injected into a die cavity through the barrel via the movable die core. As shown in fig. 4-5, on one side of the fixed die plate 1, the first die core 2 is fixedly arranged, the second die core 3 is slidably arranged relative to the fixed die plate 1, when the die is closed, the second die core 3 is stirred by an inclined deflector rod 14 arranged on one side of the movable die plate 4 so as to slide and gather from two sides to the middle, when the die is opened, the two sides are slidably opened, and then the injection product is taken out; as shown in fig. 4-5, one side of the movable mold plate 4 is slidably connected with one end of the threaded mold core 7, the other end is provided with one end of the threaded portion 701, which penetrates through the heat conducting piece 11 and extends into the first mold core 2, the threaded portion 701 on the threaded mold core 7 is a part for forming a mold cavity, the mold core pressing plate 8 abuts against the threaded mold core 7 during mold closing, the tightness of the mold core is maintained, during mold opening, the movable mold plate 4, the mold core pressing plate 8 and the limit rod 13 move outwards together for a distance longer than the length of an injection molding product, after the movement, a gap is reserved between the end of the threaded mold core 7 and the movable mold plate 4, and between the displacement mold plate 9 and the mold core pressing plate 8, at the moment, the rotating piece 6 still is connected with the threaded mold core 7, the limit rod 13 is not reached during movement, the displacement mold plate 9 still is connected with the fixed mold plate 1, then the driving component 5 drives the rotating piece 6 to rotate, the threaded mold core 7 rotates simultaneously, and further moves outwards by virtue of the action of the threads, and is separated from the injection molding product, then the mold opening, the movable mold plate 4, the pressing plate 8 and the limit rod 13 continue to move outwards, the two side of the injection molding product is further moved, the limit rod 9 is further moved outwards, and the first side of the injection mold plate is moved, the second side of the injection mold plate is moved, the first side is moved, the injection mold plate is moved, and the second side of the injection mold plate is moved, 14 is moved, and the side, 14 is moved, and the injection mold plate is moved, and the side is moved, and 14 is moved, and is moved 4 is further, and is moved and 14, simultaneously, the screw thread core 7 runs through heat conduction spare 11, can be with the heat conduction of moulding plastics melt adhesive to heat conduction spare 11 on, foretell whole die sinking in-process, cooling water channel 12 circulates cooling water throughout, and the heat of moulding plastics melt adhesive is through the heat conduction of screw thread core 7 and heat conduction spare 11 to cooling water of cooling water channel 12, and then the cooling water can take away the heat fast, and then shortens the die sinking time, avoids appearing the condition of product yellowing and the carbonization of gun barrel internal melt adhesive, guarantees product quality.

The heat conducting piece 11 is arranged to be in sliding connection with the threaded core 7, the cooling water channel 12 is connected with the heat conducting piece 11, the heat conducting piece 11 is fixed relative to the third die core 10, the sealing performance of the cooling water channel 12 is further guaranteed, heat of the threaded core 7 can be conducted to the heat conducting piece 11, the heat is taken away by cooling water, cooling of an injection molding product is further fully guaranteed, cooling efficiency is improved, and production efficiency and quality of the injection molding product are improved.

Example 2

On the basis of example 1, the difference from example 1 is that:

As shown in fig. 4-6, the threaded core 7 is provided with a mounting hole 702 penetrating through two ends of the threaded core 7, the mounting hole 702 is respectively provided with a supporting rod 15 and a first elastic member 16, one end of the mounting hole 702, which is close to the movable mold plate 4, is connected with a machine meter screw 17, two ends of the first elastic member 16 are respectively abutted with the machine meter screw 17 and the supporting rod 15, one end, which is far away from the first elastic member 16, of the supporting rod 15 is abutted with the fixed mold plate 1, and one end, which is close to the fixed mold plate 1, of the mounting hole 702 is provided with a limiting boss 703 for preventing the supporting rod 15 from falling off. As shown in fig. 4-9, the device further comprises a thimble 18, a connecting plate 19, a fixing plate 20, a push plate 21 and a second elastic piece 22, wherein the thimble 18 is slidably connected with the fixed template 1, the connecting plate 19 is connected with the fixed template 1, the fixing plate 20 is connected with the connecting plate 19, the push plate 21 is connected with the thimble 18, the two ends of the second elastic piece 22 are respectively connected with the fixed template 1 and the push plate 21, and through holes penetrating through two sides of the fixing plate 20 are formed in the fixing plate 20. The ejector pin 18 is provided with a first air passage 1801 penetrating through two ends of the ejector pin 18, the push plate 21 is provided with a second air passage 2101 communicated with the first air passage 1801, the first air passage 1801 is communicated with the mounting hole 702, the movable mould plate 4 is provided with a third air passage 401 communicated with the mounting hole 702, the abutting rod 15 is provided with an air passing groove 1501, and the machine screw 17 is provided with a first air passing hole 1701 penetrating through two ends of the machine screw 17. The top axis of the thimble 18 is provided with an abutting part 1802, the abutting rod 15 abuts against the abutting part 1802, the periphery of the abutting part 1802 is provided with a second air passing hole 1803 penetrating through two ends of the abutting part 1802, and the first air passage 1801 is communicated with the mounting hole 702 through the second air passing hole 1803.

The machine meter screw 17 and the limiting boss 703 limit the first elastic piece 16 and the abutting rod 15 in the mounting hole 702, the abutting rod 15 abuts against the fixed die plate 1, when the die-sinking threaded core 7 rotates, the threaded core 7 is easier to separate from an injection molding product under the elastic action of the first elastic piece 16, so that the threaded core 7 is more smoothly separated, and the product quality is improved. The push plate 21 is in sliding connection with the ejector pin 18 relative to the fixed template 1, the connecting plate 19 is used for supplying the fixed template 1 to move for flowing out the space between the push plate 21 and the fixed template 1, the fixed plate 20 is used for being connected with injection molding equipment and also used for limiting the displacement of the push plate 21, a through hole on the fixed plate 20 is used for connecting an ejection mechanism of the injection molding equipment, the ejection mechanism of the injection molding equipment is abutted with the push plate 21 through the through hole, the push plate 21 and the ejector pin 18 are pushed, products are ejected, the process of manually taking out the injection molding products is omitted, and the production efficiency is further improved. External air flow enters from the second air passage 2101 in the push plate 21, then sequentially flows through the first air passage 1801 in the ejector pin 18, the air passing groove 1501 on the abutting rod 15, the gap of the first elastic piece 16, the first air passing hole 1701 of the machine screw 17, the third air passage 401 in the movable mould plate 4, and then flows out of the third air passage 401, so that heat of an injection molding product and the threaded mould core 7 can be taken away through air flow, the heat dissipation capacity of the mould is further improved, the heat dissipation efficiency of the injection molding product is improved, and the generation efficiency of the product is further improved. The abutting portion 1802 is used for abutting against the ejector pin 18, the second air passing hole 1803 is used for directly abutting against the abutting portion 1802 of the ejector pin 18 through air flow, the ejector pin 18 and the abutting rod 15 are convenient to set, the top of the ejector pin 18 can be abutted against products as much as possible, and the ejection effect is improved.

The remaining features and operation principle of the present embodiment are the same as those of embodiment 1.

Example 3

Example 1 or example 2 is further defined on the basis of example 1 or example 2, with the difference that:

As shown in fig. 5, an annular sealing member 23 is provided at the joint of the cooling water channel 12 between the displacement die plate 9 and the third die core 10. As shown in fig. 6 and 10, an annular heat radiation groove 1101 is provided on the outer surface of the heat conductive member 11, and the cooling water channel 12 is connected to the heat radiation groove 1101. The driving assembly 5 comprises a driving motor 501 connected with the movable template 4, a driving gear 502 connected with the driving motor 501, and a driven gear 503 rotationally connected with the movable template 4, wherein the rotating member 6 is a gear member, and the driven gear 503 is respectively meshed with the driving gear 502 and the rotating member 6. The end part of the threaded core 7 is provided with an external spline, the axle center of the rotating piece 6 is provided with an internal spline, and the external spline is in sliding connection with the internal spline. As shown in fig. 1, a removable restrictor plate 24 is commonly attached to the sides of the core platen 8 and the displacement platen 9.

The cooling water channel 12 penetrates through the displacement template 9 and the third die core 10, and the annular sealing piece 23 is arranged at the joint of the cooling water channel 12 of the displacement template 9 and the third die core 10, so that the tightness of the cooling water channel 12 can be ensured, and water leakage is avoided. The heat dissipation effect is improved by arranging the heat dissipation groove 1101, the heat dissipation groove 1101 is connected with the cooling water channel 12, and the cooling effect of cooling water is improved. The driving assembly 5 adopts a driving motor 501 as power, and adopts a driving gear 502 and a driven gear 503 for power transmission, so that the rotation precision of the rotating piece 6 is ensured. The threaded core 7 is in spline connection with the rotating piece 6, and specifically, gaps are reserved between the external splines and the internal splines, so that sliding between the threaded core 7 and the rotating piece 6 is achieved, and the rotating piece 6 can still drive the threaded core 7 to rotate after sliding. When the mold is disassembled and transported, the core pressing plate 8 and the displacement template 9 are fixed together through the limiting plate 24, so that the displacement template 9 is prevented from moving.

In this embodiment, as shown in fig. 3-5, 8 mold cavities are provided in the mold, and 2 sets of driving assemblies 5 are provided in total.

The remaining operation principle and operation procedure of this embodiment are identical to those of embodiment 1 or embodiment 2.

In the specific content of the above embodiment, any combination of the technical features may be performed without contradiction, and for brevity of description, all possible combinations of the technical features are not described, 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.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. An injection mold for an internal thread product is characterized by comprising a fixed mold plate (1), a first mold core (2) connected with the fixed mold plate (1), a second mold core (3) connected with the first mold core (2) in a sliding manner, a movable mold plate (4), a driving assembly (5) connected with the movable mold plate (4), a rotating member (6) connected with the driving assembly (5), a threaded mold core (7) axially connected with the rotating member (6), a mold core pressing plate (8) connected with the movable mold plate (4), a displacement mold plate (9) connected with the mold core pressing plate (8) in a sliding manner, a third mold core (10) connected with the displacement mold plate (9), a heat conducting member (11) connected with the third mold core (10), a cooling water channel (12) penetrating through the displacement mold plate (9) and the third mold core (10) and connected with the heat conducting member (11), a limit rod (13) penetrating through the displacement mold plate (9) and the mold core pressing plate (8), and an inclined shifting mold plate (14) connected with the inclined shifting mold plate (14);

Screw thread core (7) one end is equipped with screw thread portion (701), just screw thread portion (701) run through heat conduction spare (11) stretch into in first mould benevolence (2), first mould benevolence (2) second mould benevolence (3) third mould benevolence (10) heat conduction spare (11) with screw thread core (7) cooperate jointly and form the mould die cavity, during the mould compound die core clamp plate (8) with screw thread core (7) butt, rotating member (6) with screw thread core (7) sliding connection part's length is greater than the length of injection molding product, screw thread core (7) radially relatively rotating member (6) are fixed, be equipped with on second mould benevolence (3) with slope driving lever (14) matched with slope hole (301).

2. The injection mold for the internal thread product according to claim 1, wherein the threaded core (7) is provided with a mounting hole (702) penetrating through two ends of the threaded core (7), the mounting hole (702) is respectively provided with a supporting rod (15) and a first elastic piece (16), one end, close to the movable mold plate (4), of the mounting hole (702) is connected with an organic meter screw (17), two ends of the first elastic piece (16) are respectively in butt joint with the organic meter screw (17) and the supporting rod (15), one end, far away from the first elastic piece (16), of the supporting rod (15) is in butt joint with the fixed mold plate (1), and one end, close to the fixed mold plate (1), of the mounting hole (702) is provided with a limiting boss (703) for preventing the supporting rod (15) from falling off.

3. The injection mold for the internal thread product according to claim 2, further comprising a thimble (18) slidably connected with the fixed mold plate (1), a connecting plate (19) connected with the fixed mold plate (1), a fixed plate (20) connected with the connecting plate (19), a push plate (21) connected with the thimble (18), and second elastic pieces (22) with two ends respectively connected with the fixed mold plate (1) and the push plate (21), wherein through holes penetrating through two sides of the fixed plate (20) are formed in the fixed plate (20).

4. The injection mold for the internal thread product according to claim 3, wherein the ejector pin (18) is provided with a first air passage (1801) penetrating through two ends of the ejector pin (18), the push plate (21) is provided with a second air passage (2101) communicated with the first air passage (1801), the first air passage (1801) is communicated with the mounting hole (702), the movable mold plate (4) is provided with a third air passage (401) communicated with the mounting hole (702), the abutting rod (15) is provided with an air passing groove (1501), and the machine meter screw (17) is provided with a first air passing hole (1701) penetrating through two ends of the machine meter screw (17).

5. The injection mold for an internal thread product according to claim 4, wherein an abutting portion (1802) is arranged at the top axis of the ejector pin (18), the abutting rod (15) abuts against the abutting portion (1802), second air passing holes (1803) penetrating through two ends of the abutting portion (1802) are formed in the periphery of the abutting portion (1802), and the first air passage (1801) is communicated with the mounting hole (702) through the second air passing holes (1803).

6. An injection mould for internally threaded products according to claim 1, characterized in that an annular seal (23) is provided at the junction of the cooling channel (12) between the displacement die plate (9) and the third die core (10).

7. The injection mold for an internally threaded product according to claim 1, wherein an annular heat dissipation groove (1101) is provided on an outer side surface of the heat conducting member (11), and the cooling water passage (12) is connected to the heat dissipation groove (1101).

8. An injection mold for an internally threaded product according to claim 1, wherein the driving assembly (5) comprises a driving motor (501) connected with the movable die plate (4), a driving gear (502) connected with the driving motor (501), and a driven gear (503) rotatably connected with the movable die plate (4), the rotary member (6) is a gear member, and the driven gear (503) is meshed with the driving gear (502) and the rotary member (6), respectively.

9. The injection mold for an internally threaded product according to claim 8, wherein the threaded core (7) has an external spline at an end portion thereof, and the rotary member (6) has an internal spline at an axial center thereof, the external spline being slidably connected to the internal spline.

10. An injection mould for internally threaded products according to claim 1, characterized in that the core platen (8) and the sides of the displacement form (9) are jointly connected with a removable restrictor plate (24).