CN212422065U

CN212422065U - Injection mold for automatically demolding nut products

Info

Publication number: CN212422065U
Application number: CN202021200215.5U
Authority: CN
Inventors: 黄生仁
Original assignee: Taicang Gairuite Plastic Mould Co ltd
Current assignee: Taicang Gairuite Plastic Mould Co ltd
Priority date: 2020-06-25
Filing date: 2020-06-25
Publication date: 2021-01-29
Anticipated expiration: 2030-06-25

Abstract

The utility model discloses an injection mold of nut product automatic demoulding, including the master model fixed plate, the die board, the push pedal, the core board, bottom plate and internal thread tripping device, the die board center is equipped with the core mould benevolence, the push pedal middle part is equipped with the core mould benevolence, internal thread tripping device includes central core, the screw core, the core frame, the gear drive subassembly, motor and a plurality of spring unit of group, through motor drive gear drive subassembly, it rotates to drive the screw core relative central core by the gear drive subassembly, and simultaneously, the push pedal promotes down at spring unit's reaction force, it is ejecting with the nut product, can make the relative nut product of screw core do the combined motion of rotation and axial displacement, make the nut product take off from screw core and central core, make the nut product of in-band screw thread can the drawing of patterns smoothly. The utility model discloses when realizing the smooth drawing of patterns of nut product internal thread, still realized taking off the back-off of blind hole, and had simple structure, be convenient for advantage such as implementation.

Description

Injection mold for automatically demolding nut products

Technical Field

The utility model relates to an injection mold specifically is an injection mold who relates to an automatic drawing of patterns of nut product.

Background

The injection mold is a tool for producing plastic products and consists of a movable mold and a fixed mold, wherein the movable mold and the fixed mold are closed to form a pouring system and a cavity during injection molding, and the movable mold and the fixed mold are separated during mold opening so as to take out the plastic products. However, referring to fig. 1, some plastic products 100 (funnel-shaped nut products) have internal threads 101 with large opening diameter and blind holes 102 on the side, and the prior art injection mold cannot realize smooth demolding of the internal threads of the nut products and simultaneously realize the undercut removal of the blind holes, so it is necessary to design and develop an injection mold applied to such plastic products.

Disclosure of Invention

In order to solve the technical problem, the utility model provides an injection mold of automatic drawing of patterns of nut product when realizing the smooth drawing of patterns of nut product internal thread, has realized taking off the back-off of blind hole, and has simple structure, is convenient for implement advantage such as.

The technical scheme of the utility model is realized like this:

an injection mold for automatically demolding nut products comprises a female mold fixing plate, a female mold plate, a push plate, a male mold plate and a bottom plate which are sequentially arranged, wherein the male mold plate is arranged on the bottom plate through two cushion blocks, an assembly space is formed between the male mold plate and the bottom plate, a female mold core is arranged at the center of the female mold plate, a male mold core is arranged in the middle of the push plate, a cavity for injection molding is enclosed by the male mold core and the female mold core, the injection mold further comprises an internal thread tripping mechanism, the internal thread tripping mechanism comprises a central core, a threaded core, a core seat, a gear transmission assembly, a motor and a plurality of groups of spring assemblies, the core seat is arranged on the bottom plate and is positioned between the two cushion blocks, the bottom end of the central core is arranged on the core seat, the top end of the central core extends into the cavity after penetrating through mounting holes of the male mold plate, the push plate and the male, the threaded core is rotatably arranged in the mounting hole and sleeved outside the central core, the top end of the threaded core extends into the cavity, a threaded forming surface for forming internal threads of a nut product is formed on the outer surface of the top end of the threaded core, and the bottom end of the threaded core penetrates out of the bottom of the male template; the motor is arranged on the side wall of the male template, and the gear transmission assembly is connected between a rotary output shaft of the motor and the bottom end of the threaded core in a transmission manner; the spring assembly comprises guide pillars and compression springs, each spring assembly corresponds to each group of spring assemblies, a spring groove is formed in the top of the male die plate, a guide pillar groove is formed in the top of the push plate, a guide pillar hole is formed in the bottom of the guide pillar groove, the cap of each guide pillar is arranged in the corresponding guide pillar groove, the bottom end of each guide pillar penetrates through the corresponding guide pillar hole and then is fixedly connected with the bottom of the corresponding spring groove, each compression spring is arranged in the corresponding spring groove, the compression springs are sleeved outside the corresponding guide pillars, and the compression springs are in a compression state and abut against the bottoms of the push plates.

Furthermore, the gear transmission assembly comprises a first gear, a second gear and a third gear, the first gear is fixedly connected with a rotary output shaft of the motor, the third gear is fixedly sleeved outside the bottom end of the threaded mold core, the second gear is rotatably installed between the bottom of the male mold plate and the avoidance notch on the cushion block, and the second gear is meshed with the first gear and the third gear.

Furthermore, four groups of spring assemblies are arranged, the four spring assemblies correspond to the four groups of spring assemblies, four spring grooves are formed in the top of the male template, four guide column grooves are formed in the top of the push plate, and the four spring grooves are arranged on the periphery of the male mold core in a square shape.

Furthermore, the injection mold further comprises a blind hole tripping assembly corresponding to the blind hole in the side face of the nut product, the blind hole tripping assembly comprises a sliding block, a sliding block core and a shovel base, the sliding block is arranged at the bottom of the female mold plate in a sliding mode along a tripping direction, an inclined guide hole is formed in the sliding block, the rear end of the sliding block core is fixedly connected with the front end of the sliding block, the front end of the sliding block core penetrates through the female mold core and extends into the mold cavity, and the front end of the sliding block core forms a forming surface for forming the blind hole of the nut product; the top end of the shovel base is fixedly connected to the female die fixing plate, the bottom end of the shovel base is provided with an inclined guide pillar, the middle of the shovel base penetrates through a position avoiding hole in the female die plate, and the inclined guide pillar is inserted into the inclined guide hole.

Furthermore, the blind hole tripping assembly also comprises a left pressing strip and a right pressing strip, and a left flange and a right flange are formed by outwards extending the left side and the right side of the bottom of the sliding block; the bottom of the female die plate is provided with a guide sliding groove along the tripping direction, the sliding block is arranged in the guide sliding groove, the left pressing strip is arranged on a left step of the guide sliding groove and pressed on a left flange of the sliding block, and the right pressing strip is arranged on a right step of the guide sliding groove and pressed on a right flange of the sliding block, so that the sliding block can slide along the guide sliding groove.

Furthermore, the injection mold also comprises a pipe orifice tripping assembly corresponding to the pipe orifice at the top of the nut product, and the pipe orifice tripping assembly is arranged in the through groove of the female mold plate and is positioned at the top of the female mold core; the pipe orifice tripping assembly comprises a first pipe orifice die core, a first inclined slide block, a second pipe orifice die core and a second inclined slide block, wherein a pipe orifice cavity for forming a pipe orifice of the nut product is enclosed by the first pipe orifice die core and the second pipe orifice die core, the first inclined slide block is arranged on the outer side of the first pipe orifice die core, the top of the first inclined slide block is fixedly connected to the female die fixing plate, the first inclined slide block is in inclined surface contact with the first pipe orifice die core, and the first inclined slide block is connected with the first pipe orifice die core through a first T-shaped guide strip and a first T-shaped guide groove which are in sliding fit with each other; the second oblique sliding block is arranged on the outer side of the second pipe orifice die core, the top of the second oblique sliding block is fixedly connected to the female die fixing plate, the second oblique sliding block is in oblique surface contact with the second pipe orifice die core, and the second oblique sliding block is connected with the second pipe orifice die core through a second T-shaped guide strip and a second T-shaped guide groove which are in sliding fit with each other.

Furthermore, the injection mold further comprises a gate structure, the gate structure comprises a gate sleeve, a positioning ring, a gate insert and a gate fixing plate, the top end of the gate insert is fixed in the groove at the bottom of the female mold fixing plate through the gate fixing plate, the bottom end of the gate insert extends into the pipe orifice cavity, the top end of the gate sleeve is fixed at the top of the female mold fixing plate through the positioning ring, and the bottom end of the gate sleeve penetrates through the central through hole of the gate insert and extends into the pipe orifice cavity.

Furthermore, the injection mold further comprises a sprue ejection structure, the sprue ejection structure comprises ejector pins, ejector pin reset springs and ejector pin bases, the core bases are fixedly connected with the bottom plate through a plurality of supporting columns, ejector pin holes are formed in the middle of the central core, the ejector pin bases are arranged at the top of the bottom plate and located above ejection through holes in the bottom plate, the bottom ends of the ejector pins are fixedly connected to the ejector pin bases, the top ends of the ejector pins penetrate through the ejector pin holes and then abut against the bottom ends of the sprue insert, and the ejector pin reset springs are located between the core bases and the ejector pin bases and sleeved outside the ejector pins.

The utility model has the advantages that: the utility model provides an injection mold of automatic drawing of patterns of nut product, at the in-process that the relative mother board of public template was opened, through motor drive gear drive assembly, it rotates to drive the screw thread core relative center core by gear drive assembly, and simultaneously, the push pedal promotes down at spring assembly's compression spring's reaction force, it is ejecting with the nut product, can make the relative nut product of screw thread core do the combined motion of rotation and axial displacement, make the nut product take off from screw thread core and center core, make the nut product of in-band screw thread can the drawing of patterns smoothly, thereby the problem that the heavy-calibre leaks hopper-shaped nut product and is difficult to the drawing of patterns has been solved. Preferably, in the die sinking process, the female die plate and the female die fixing plate are controlled to be opened firstly, the sliding block is driven to move laterally through the shovel base, and the undercut of the blind hole on the peripheral side of the nut product is achieved, so that the undercut of the blind hole is achieved while smooth demolding of the internal thread of the nut product is achieved.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the plastic part of the present invention;

FIG. 2 is a perspective view of the injection mold for automatically demolding nut products of the present invention;

FIG. 3 is a side view of the automatic demolding injection mold for nut products of the present invention;

FIG. 4 is a top view of the injection mold for automatically demolding nut products of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 7 is a cross-sectional view taken along line C-C of FIG. 4;

FIG. 8 is an exploded view of the automatic ejection injection mold for nut products of the present invention;

fig. 9 is a schematic structural view of the middle blind hole trip assembly of the present invention;

fig. 10 is a schematic structural view of the pipe orifice release assembly of the present invention;

the following description is made with reference to the accompanying drawings:

1-female die fixing plate, 2-female die plate, 21-through groove, 3-push plate, 31-guide post groove, 32-guide post hole, 4-male die plate, 41-spring groove, 5-bottom plate, 51-ejection through hole, 6-cushion block, 7-female die core, 8-male die core, 10-internal thread tripping mechanism, 110-central die core, 120-thread die core, 121-thread forming surface, 130-die core seat, 140-gear transmission component, 141-first gear, 142-second gear, 143-third gear, 150-motor, 160-spring component, 161-guide post, 162-compression spring, 171-first deep groove bearing, 172-plane bearing, 173-second deep groove bearing, 174-third deep groove bearing, 175-a fourth deep groove bearing; 20-blind hole tripping component, 210-slide block, 211-inclined guide hole, 212-left flange, 213-right flange, 220-slide block core, 230-shovel base, 231-inclined guide pillar, 240-left pressing bar, 250-right pressing bar, 30-pipe orifice tripping component, 310-first pipe orifice die core, 311-first T-shaped guide groove, 320-first inclined slide block, 321-first T-shaped guide strip, 330-second pipe orifice die core, 331-second T-shaped guide groove, 340-second inclined slide block, 341-second T-shaped guide strip, 40-gate structure, 410-gate sleeve, 420-positioning ring, 430-gate insert and 440-gate fixing plate; 50-gate ejection structure, 510-thimble, 520-thimble return spring, 530-thimble seat, 540-pillar, 100-nut product, 101-internal thread, 102-blind hole, 103-nozzle.

Detailed Description

In order to make the present invention more obvious and understandable, the following description of the embodiments of the present invention is made in detail with reference to the accompanying drawings.

As shown in fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 8, an injection mold for automatically demolding a nut product comprises a female mold fixing plate 1, a female mold plate 2, a push plate 3, a male mold plate 4 and a bottom plate 5 which are sequentially arranged, wherein the male mold plate is installed on the bottom plate through two cushion blocks 6, so that an assembly space is formed between the male mold plate and the bottom plate, a female mold core 7 is arranged at the center of the female mold plate, a male mold core 8 is arranged in the middle of the push plate, and the male mold core and the female mold core enclose a mold cavity for injection molding, which is characterized in that: the injection mold further comprises an internal thread trip mechanism 10 comprising a central core 110, a threaded core 120, a core print 130, a gear assembly 140, a motor 150, and a plurality of sets of spring assemblies 160, the core print being mounted on the base plate, and is positioned between the two cushion blocks, the bottom end of the central core is arranged on the core print seat, the top end of the central core extends into the cavity after penetrating through the mounting holes of the male template, the push plate and the male die core, the threaded core is rotatably arranged in the mounting hole and sleeved outside the central core, the top end of the threaded core extends into the cavity, the external surface of the top end of the threaded core forms a thread forming surface 121 for forming the internal thread 101 of the nut product 100, and the bottom end of the threaded core penetrates out of the bottom of the male die plate; the motor is arranged on the side wall of the male template, and the gear transmission assembly is connected between a rotary output shaft of the motor and the bottom end of the threaded core in a transmission manner; the spring assembly comprises guide pillars 161 and compression springs 162, each spring assembly corresponds to each group of spring assemblies, a spring groove 41 is formed in the top of the male die plate, a guide pillar groove 31 is formed in the top of the push plate, a guide pillar hole 32 is formed in the bottom of the guide pillar groove, a cap of each guide pillar is arranged in the guide pillar groove, the bottom end of each guide pillar penetrates through the guide pillar hole and then is fixedly connected with the bottom of the spring groove, each compression spring is arranged in the spring groove, the compression springs are sleeved outside the guide pillars, and the compression springs are in a compression state and abut against the bottom of the push plate.

In the structure, at the in-process that the relative mother board of public template was opened, through motor drive gear drive subassembly, it rotates to drive the screw thread core relative center core by gear drive subassembly, and simultaneously, the push pedal promotes under spring assembly's compression spring's reaction force, it is ejecting with the nut product, can make the relative nut product of screw thread core do the combined motion of rotation and axial displacement, make the nut product take off from screw thread core and center core, make the nut product of in-band screw thread can demold smoothly, thereby the problem that the big-caliber funnel-shaped nut product is difficult to the drawing of patterns has been solved.

Preferably, referring to fig. 5, the structure that the threaded core is rotatably disposed in the mounting hole and sleeved outside the central core is as follows: a first containing groove is formed at the top end of the mounting hole of the male die plate, a second containing groove is formed at the bottom end of the mounting hole of the male die plate, a first deep groove bearing 171 and a planar bearing 172 are arranged in the first containing groove, and a second deep groove bearing 173 is arranged in the second containing groove, so that the rotation of the threaded core relative to the male die plate, the push plate and the male die core can be realized through the first deep groove bearing, the second deep groove bearing and the planar bearing. In order to realize the rotation of the screw core with respect to the center core, a first step is formed on the inner peripheral side of the screw core, a second step is formed on the outer peripheral side of the center core, which is opposite to the first step, the rotation of the screw core with respect to the center core can be realized by providing a third deep groove bearing 174 between the first step and the second step, and a fourth deep groove bearing 175 is provided between the bottom end of the screw core and the bottom end of the center core in order to ensure the stability of the rotation of the screw core with respect to the center core. Therefore, the deep groove bearings are arranged between the threaded core and the central core and between the threaded core and the mounting hole, so that the threaded core is rotatably arranged in the mounting hole and sleeved outside the central core. The plane bearing is arranged between the male die plate and the push plate, so that the axial load can be borne.

Preferably, referring to fig. 2 and 3, the gear transmission assembly includes a first gear 141, a second gear 142 and a third gear 143, the first gear is fixedly connected to a rotary output shaft of the motor, the third gear is fixedly sleeved outside the bottom end of the threaded core, the second gear is rotatably installed between the bottom of the core plate and the clearance gap on the spacer, and the second gear is engaged with the first gear and the third gear. In this way, the motor drives the first gear, the first gear is transmitted to the second gear, and the second gear is transmitted to the third gear, so that the function of driving the threaded core to rotate by the motor can be realized. Wherein, the second gear is installed between core plate and cushion, has realized the rotation of second gear and the function of location.

Preferably, four groups of spring assemblies are arranged, the four spring assemblies correspond to the four groups of spring assemblies, four spring grooves are formed in the top of the male template, four guide post grooves are formed in the top of the push plate, and the four spring grooves are arranged on the periphery of the male mold core in a square shape. Like this, be four square spring unit through arranging and can realize the horizontal jacking effect to the push pedal, do not take place the slope when guaranteeing the drawing of patterns to realize drawing of patterns smoothly.

Preferably, referring to fig. 5 and 9, the injection mold further includes a blind hole tripping assembly 20 corresponding to the blind hole 102 on the side surface of the nut product, the blind hole tripping assembly includes a slider 210, a slider core 220 and a shovel base 230, the slider is slidably disposed at the bottom of the cavity plate along a tripping direction, an inclined guide hole 211 is formed on the slider, the rear end of the slider core is fixedly connected with the front end of the slider, the front end of the slider core penetrates through the cavity plate core and extends into the cavity, and the front end of the slider core forms a molding surface for molding the blind hole of the nut product; the top end of the shovel base is fixedly connected to the female die fixing plate, the bottom end of the shovel base is provided with an inclined guide post 231, the middle of the shovel base penetrates through a position avoiding hole in the female die plate, and the inclined guide post is inserted into the inclined guide hole. Like this, at the die sinking in-process, control female mould board earlier and female mould fixed plate open, under the mutually supporting of the oblique guide hole of slider and the oblique guide pillar of shovel base bottom, the shovel base can drive slider lateral shifting to realize taking off the back-off function of nut product week side blind hole. During specific implementation, a shutter can be arranged between the push plate and the female die plate to realize the function of controlling the female die plate and the female die fixing plate to be opened first. Thus, the utility model discloses injection mold has realized taking off the back-off of blind hole when realizing the smooth drawing of patterns of nut product internal thread. As a preferred embodiment product, the utility model discloses nut product side is provided with two relative blind holes, consequently, the utility model discloses injection mold sets up two sets of corresponding blind hole trip unit.

Preferably, referring to fig. 9, the blind hole trip assembly further includes a left hold-down strip 240 and a right hold-down strip 250, and left and right sides of the bottom of the slider are extended outwards to form a left flange 212 and a right flange 213; the bottom of the female die plate is provided with a guide sliding groove along the tripping direction, the sliding block is arranged in the guide sliding groove, the left pressing strip is arranged on a left step of the guide sliding groove and pressed on a left flange of the sliding block, and the right pressing strip is arranged on a right step of the guide sliding groove and pressed on a right flange of the sliding block, so that the sliding block can slide along the guide sliding groove. Therefore, under the matching of the left pressing bar and the left flange of the sliding block and the matching of the right pressing bar and the right flange of the sliding block, the function that the sliding block only moves in the tripping direction can be realized, and the deviation is avoided in the tripping process.

Preferably, referring to fig. 6 and 10, the injection mold further includes a nozzle release assembly 30 corresponding to the nozzle 103 at the top of the nut product, and the nozzle release assembly is disposed in the through groove 21 of the cavity plate and located at the top of the cavity insert; the pipe orifice releasing component comprises a first pipe orifice die core 310, a first inclined slide block 320, a second pipe orifice die core 330 and a second inclined slide block 340, wherein the first pipe orifice die core and the second pipe orifice die core enclose a pipe orifice cavity for forming a pipe orifice of the nut product, the first inclined slide block is arranged on the outer side of the first pipe orifice die core, the top of the first inclined slide block is fixedly connected to the female die fixing plate, the first inclined slide block is in inclined surface contact with the first pipe orifice die core, and the first inclined slide block is connected with the first pipe orifice die core through a first T-shaped guide strip 321 and a first T-shaped guide groove 311 which are in sliding fit with each other; the second inclined slide block is arranged at the outer side of the second pipe orifice die core, the top of the second inclined slide block is fixedly connected to the female die fixing plate, the second inclined slide block is in inclined surface contact with the second pipe orifice die core, and the second inclined slide block and the second pipe orifice die core are connected together through a second T-shaped guide strip 341 and a second T-shaped guide groove 331 which are in sliding fit with each other. Therefore, under the matching of the first T-shaped guide strip and the first T-shaped guide groove, the first inclined slide block can drive the first pipe orifice die core to retreat and separate from the pipe orifice of the injection molded nut product through inclined surface contact, and meanwhile, under the matching of the second T-shaped guide strip and the second T-shaped guide groove, the second inclined slide block can drive the second pipe orifice die core to retreat and separate from the pipe orifice of the injection molded nut product through inclined surface contact. In the mold opening process, when the female mold plate and the female mold fixing plate are opened, the female end fixing plate can drive the first oblique sliding block and the second oblique sliding block simultaneously so as to separate the pipe orifice at the top of the nut product.

Preferably, referring to fig. 5 and 6, the injection mold further includes a gate structure 40, the gate structure includes a gate sleeve 410, a positioning ring 420, a gate insert 430 and a gate fixing plate 440, a top end of the gate insert is fixed in a groove at the bottom of the female mold fixing plate by the gate fixing plate, a bottom end of the gate insert extends into the nozzle cavity, a top end of the gate sleeve is fixed at the top of the female mold fixing plate by the positioning ring, and a bottom end of the gate sleeve is inserted into a central through hole of the gate insert and extends into the nozzle cavity. Like this, can realize injecting through the runner structure and advance gluey function, the runner is located the orificial top of nut product, the shaping of being convenient for and ejecting runner.

Preferably, referring to fig. 5 and 6, the injection mold further includes a gate ejection structure 50, the gate ejection structure includes an ejector pin 510, an ejector pin return spring 520, and an ejector pin base 530, the core base is fixedly connected to the bottom plate through a plurality of support posts 540, an ejector pin hole axially disposed is formed in the middle of the central core, the ejector pin base is disposed at the top of the bottom plate and located above the ejection through hole 51 on the bottom plate, the bottom end of the ejector pin is fixedly connected to the ejector pin base, the top end of the ejector pin passes through the ejector pin hole and abuts against the bottom end of the gate insert, and the ejector pin return spring is positioned between the core base and the ejector pin base and is sleeved outside the ejector pin. Thus, the gate ejection structure can eject the gate injected with glue. Simple structure and convenient implementation.

The utility model discloses nut product automatic demoulding's injection mold's action principle as follows: in the die sinking process, open through shutter control die plate and master model fixed plate earlier, drive slider lateral shifting through the shovel base, realize taking off the back-off of nut product week side blind hole, simultaneously, through the oblique slider of first oblique slider and second drive first mouth of pipe mould benevolence and second mouth of pipe mould benevolence lateral shifting, realize leaking the orificial back-off of hopper-shaped nut product. Then, the male die plate is controlled to be opened relative to the female die plate, in the opening process, the gear transmission assembly is driven by the motor, the threaded core is driven by the gear transmission assembly to rotate relative to the central core, and meanwhile, the nut product is ejected out by the push plate under the pushing action of the compression spring of the spring assembly, so that the threaded core can do combined motion of rotation and axial movement relative to the nut product, the nut product is separated from the threaded core and the central core, and the nut product with the internal thread can be smoothly demoulded.

The above embodiments have been described in detail with reference to the accompanying drawings. Those skilled in the art can make various modifications and changes to the above embodiments without departing from the spirit of the present invention, and the scope of the present invention is also covered by the appended claims.

Claims

1. The utility model provides an injection mold of nut product automatic demoulding, includes that the order sets up female mould fixed plate (1), female mould board (2), push pedal (3), public template (4) and bottom plate (5), public template through two cushion (6) install in on the bottom plate, make public template with form the assembly space between the bottom plate, the female mould board center is equipped with cavity benevolence (7), the push pedal middle part is equipped with public mould benevolence (8), public mould benevolence with cavity benevolence encloses into to mould plastics and uses die cavity, its characterized in that: the injection mold further comprises an internal thread tripping mechanism (10), the internal thread tripping mechanism comprises a central core (110), a thread core (120), a core print (130), a gear transmission assembly (140), a motor (150) and a plurality of groups of spring assemblies (160), the core print is mounted on the bottom plate, and is positioned between the two cushion blocks, the bottom end of the central core is arranged on the core print seat, the top end of the central core extends into the cavity after penetrating through the mounting holes of the male template, the push plate and the male die core, the threaded core is rotatably arranged in the mounting hole and sleeved outside the central core, the top end of the threaded core extends into the cavity, the outer surface of the top end of the threaded core forms a thread forming surface (121) for forming an internal thread (101) of a nut product (100), and the bottom end of the threaded core penetrates out of the bottom of the male die plate; the motor is arranged on the side wall of the male template, and the gear transmission assembly is connected between a rotary output shaft of the motor and the bottom end of the threaded core in a transmission manner; the spring assembly comprises guide pillars (161) and compression springs (162), each group of spring assembly corresponds to each group of spring assembly, a spring groove (41) is formed in the top of the male die plate, a guide pillar groove (31) is formed in the top of the push plate, a guide pillar hole (32) is formed in the bottom of the guide pillar, a cap of each guide pillar is arranged in the corresponding guide pillar groove, the bottom end of each guide pillar penetrates through the corresponding guide pillar hole and then is fixedly connected with the bottom of the corresponding spring groove, each compression spring is arranged in the corresponding spring groove, the compression springs are sleeved outside the corresponding guide pillars, and the compression springs are in a compression state and abut against the bottoms of the push plates.

2. The injection mold for automatically demolding nut products according to claim 1, characterized in that: the gear transmission assembly comprises a first gear (141), a second gear (142) and a third gear (143), the first gear is fixedly connected with a rotary output shaft of the motor, the third gear is fixedly sleeved outside the bottom end of the threaded mold core, the second gear is rotatably installed between the bottom of the male mold plate and a clearance gap on the cushion block, and the second gear is meshed with the first gear and the third gear.

3. The injection mold for automatically demolding nut products according to claim 1, characterized in that: four groups of spring assemblies are arranged and correspond to the four groups of spring assemblies, four spring grooves are formed in the top of the male template, four guide post grooves are formed in the top of the push plate, and the four spring grooves are arranged on the periphery of the male mold core in a square shape.

4. The injection mold for automatically demolding nut products according to claim 1, characterized in that: the injection mold further comprises a blind hole tripping assembly (20) corresponding to a blind hole (102) in the side face of the nut product, the blind hole tripping assembly comprises a sliding block (210), a sliding block core (220) and a shovel base (230), the sliding block is arranged at the bottom of the female mold plate in a sliding mode along a tripping direction, an inclined guide hole (211) is formed in the sliding block, the rear end of the sliding block core is fixedly connected with the front end of the sliding block, the front end of the sliding block core penetrates through the female mold core and extends into the mold cavity, and the front end of the sliding block core forms a molding surface for molding the blind hole of the nut product; the top end of the shovel base is fixedly connected to the female die fixing plate, an inclined guide post (231) is arranged at the bottom end of the shovel base, the middle of the shovel base penetrates through a position avoiding hole in the female die plate, and the inclined guide post is inserted into the inclined guide hole.

5. The injection mold for automatically demolding nut products according to claim 4, characterized in that: the blind hole tripping assembly further comprises a left pressing strip (240) and a right pressing strip (250), and a left flange (212) and a right flange (213) are formed by outwards extending the left side and the right side of the bottom of the sliding block; the bottom of the female die plate is provided with a guide sliding groove along the tripping direction, the sliding block is arranged in the guide sliding groove, the left pressing strip is arranged on a left step of the guide sliding groove and pressed on a left flange of the sliding block, and the right pressing strip is arranged on a right step of the guide sliding groove and pressed on a right flange of the sliding block, so that the sliding block can slide along the guide sliding groove.

6. The injection mold for automatically demolding nut products according to claim 1, characterized in that: the injection mold further comprises a pipe orifice releasing assembly (30) corresponding to a pipe orifice (103) at the top of the nut product, and the pipe orifice releasing assembly is arranged in the through groove (21) of the female mold plate and is positioned at the top of the female mold core; the pipe orifice releasing assembly comprises a first pipe orifice die core (310), a first inclined slide block (320), a second pipe orifice die core (330) and a second inclined slide block (340), wherein the first pipe orifice die core and the second pipe orifice die core enclose a pipe orifice cavity for forming a pipe orifice of the nut product, the first inclined slide block is arranged on the outer side of the first pipe orifice die core, the top of the first inclined slide block is fixedly connected to the female die fixing plate, the first inclined slide block is in inclined surface contact with the first pipe orifice die core, and the first inclined slide block is connected with the first pipe orifice die core through a first T-shaped guide strip (321) and a first T-shaped guide groove (311) which are in sliding fit with each other; the second inclined slide block is arranged on the outer side of the second pipe orifice die core, the top of the second inclined slide block is fixedly connected to the female die fixing plate, the second inclined slide block is in inclined surface contact with the second pipe orifice die core, and the second inclined slide block and the second pipe orifice die core are connected together through a second T-shaped guide strip (341) and a second T-shaped guide groove (331) which are in sliding fit with each other.

7. The injection mold for automatically demolding nut products according to claim 6, characterized in that: the injection mold further comprises a gate structure (40), the gate structure comprises a gate sleeve (410), a positioning ring (420), a gate insert (430) and a gate fixing plate (440), the top end of the gate insert is fixed in a groove in the bottom of the female mold fixing plate through the gate fixing plate, the bottom end of the gate insert extends into the pipe orifice cavity, the top end of the gate sleeve is fixed at the top of the female mold fixing plate through the positioning ring, and the bottom end of the gate sleeve penetrates through a central through hole of the gate insert and extends into the pipe orifice cavity.

8. The injection mold for automatically demolding nut products according to claim 7, characterized in that: the injection mold further comprises a sprue ejection structure (50), the sprue ejection structure comprises ejector pins (510), ejector pin reset springs (520) and ejector pin bases (530), the core bases are fixedly connected with the bottom plate through a plurality of supporting columns (540), ejector pin holes which are axially arranged are formed in the middle of the central core, the ejector pin bases are arranged at the top of the bottom plate and located above ejection through holes (51) in the bottom plate, the bottom ends of the ejector pins are fixedly connected to the ejector pin bases, the top ends of the ejector pins penetrate through the ejector pin holes and then abut against the bottom ends of the sprue insert, and the ejector pin reset springs are positioned between the core bases and the ejector pin bases and sleeved outside the ejector pins.