CN112873734A

CN112873734A - Durable plastic mold with high precision and using method

Info

Publication number: CN112873734A
Application number: CN202011418509.XA
Authority: CN
Inventors: 丁瑛
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-06-01

Abstract

The invention discloses a durable plastic mold with high precision, which relates to the technical field of plastic molds and comprises a movable mold seat, a fixed mold seat, a movable mold fixedly connected to the side wall of one side of the movable mold seat and a fixed mold fixedly connected to the side wall of one side of the fixed mold seat, wherein a sliding groove is formed in the side wall of one side of the movable mold, and a pair of guide holes is formed in the side wall of one side of a male mold. The invention has reasonable structure, the male die is matched with the die groove on the fixed die and matched with the die groove to form a die cavity, when the male die is worn after long service time in the injection molding process of the rubber die, the stud is rotated, rotates and moves along the threaded hole on the movable die holder, and pushes the male die to slide along the sliding groove, thereby compensating the wear amount of the male die, ensuring the precision of the injection molding size of the product, being durable, improving the matching precision of the movable die and the fixed die by arranging the positioning pin and the positioning hole, and further improving the size precision of the injection molding product.

Description

Durable plastic mold with high precision and using method

Technical Field

The invention relates to the technical field of plastic molds, in particular to a durable plastic mold with high precision and a using method thereof.

Background

An injection mold is a tool for producing plastic products and also a tool for giving the plastic products complete structure and precise dimensions. Injection molding is a processing method used for mass production of parts with complex shapes, and particularly relates to a method for injecting a material melted by heating into a mold cavity from high pressure, and obtaining a formed product after cooling and solidification.

In the plastic mould injection process, the mould is worn and torn easily after the live time is long, and when wearing and tearing back, the product size will be inaccurate for the product can not satisfy the user demand, and is very troublesome to shaping product secondary treatment, and the location is inaccurate when removing mould and fixed mould cooperation, also can lead to the product size to be inaccurate, consequently, for solving this problem, this application provides the durable type plastic mould that has the precision height to satisfy the demand.

Disclosure of Invention

The utility model provides a durable type plastic mould that precision is high promotes the terrace die and slides along the spout to the wearing and tearing volume of compensation terrace die has ensured the accuracy of product size of moulding plastics, and durable, through setting up locating pin, locating hole, has improved removal mould and fixed mould cooperation precision, further improves the product size precision of moulding plastics.

In order to achieve the above purpose, the present application provides the following technical solutions: the durable plastic mold with high precision comprises a movable mold seat, a fixed mold seat, a movable mold fixedly connected to one side wall of the movable mold seat, and a fixed mold fixedly connected to one side wall of the fixed mold seat, wherein one side wall of the movable mold is provided with a chute, a male mold is slidably connected in the chute, one side wall of the male mold is provided with a pair of guide holes, a guide rod is slidably connected in each guide hole, one end of each guide rod is fixedly connected to the movable mold seat, one side wall of the movable mold seat is provided with a threaded hole, one side wall of the male mold is rotatably connected with a stud, one end of the stud is screwed on the threaded hole and extends out of the threaded hole, one side wall of the male mold is fixedly connected with four positioning pins, and one side wall of the movable mold is provided with four positioning holes, the four positioning pins correspond to the four positioning holes respectively, a die cavity is formed in the fixed die and matched with the male die, and a material injection hole is formed in the side wall of one side of the fixed die holder and communicated with the die cavity.

Borrow by above-mentioned structure, the terrace die is with the die cavity looks adaptation on the fixed mould to the cooperation forms the die cavity, and glue mould in-process of moulding plastics, when the terrace die wearing and tearing appear after the live time, rotate the double-screw bolt, the double-screw bolt is along the screw hole internal rotation and the removal on the removal die holder, promotes the terrace die and slides along the spout, thereby the wearing and tearing volume of compensation terrace die has ensured the accuracy of product injection moulding size, and durable, through setting up locating pin, locating hole, has improved removal mould and fixed mould cooperation precision, further improves injection moulding product size precision.

Preferably, the air inlet has been seted up on the both sides lateral wall of fixed mould respectively, the hole of airing exhaust, cold wind chamber has been seted up in the fixed mould, the air inlet the hole of airing exhaust respectively with the cold wind chamber is linked together, one side of fixed mould is equipped with an air inlet section of thick bamboo, the one end of an air inlet section of thick bamboo extends to in the air inlet, fixedly connected with dust screen in the air inlet section of thick bamboo, fixedly connected with fixed plate on the inner wall of an air inlet section of thick bamboo, fixedly connected with motor on one side lateral wall of fixed plate, the fan assembly has been cup jointed to the fixed on the motor output.

Furthermore, the motor output end rotates and drives the fan assembly to rotate, the fan assembly blows external cold air to the air inlet through the air inlet cylinder, then flows to the cold air cavity, the cold air brings away heat on the fixed die in the cold air cavity, so that the temperature in the film groove is reduced, finally, the hot air is discharged outside through the air exhaust hole, through setting the motor, the fan assembly and the cold air cavity, the rapid cooling of the die cavity is realized, the cooling forming of injection molding is accelerated, the forming speed of injection molding products is improved, through setting a dustproof net, the phenomenon that external dust and other impurities enter the air inlet and the cold air cavity is avoided, and the blockage of the cold air cavity is caused.

Preferably, the side wall of the air inlet cylinder is fixedly connected with a mounting plate, and the side wall of one side of the mounting plate is fixedly connected to the fixed die holder.

Preferably, a placing groove is formed in the fixed die, a rotating hole is formed in the side wall of one side of the fixed die, the rotating hole is communicated with the placing groove, a moving groove is formed in the inner wall of the bottom side of the placing groove, the moving groove is communicated with the material injection hole, a rotating shaft is rotatably connected in the rotating hole, one end of the rotating shaft extends out of the rotating hole, a cam is fixedly sleeved on the rotating shaft and is located in the placing groove, a sealing plate is arranged in the moving groove, a push rod is fixedly connected to the top of the sealing plate, a return spring is sleeved on the push rod, two ends of the return spring are respectively fixedly connected with the push rod and the fixed die, and the sealing plate is matched with the material injection hole.

Further, after the sol material is injected into the die cavity through the material injection hole, the rotating shaft is rotated, the rotating shaft rotates to drive the cam to rotate, the cam rotates to push the push rod to drive the sealing plate to move along the moving groove until the sealing plate separates the material injection hole into two parts, so that the length of the material injection hole is shortened, redundant materials and waste materials formed in the material injection hole after the plastic product is molded are shortened, and waste of raw materials is reduced.

Preferably, a heating sleeve is arranged in the fixed die, the heating sleeve is coaxial with the material injection hole on the fixed die holder, and a wiring plug is fixedly connected to the heating sleeve.

Further, insert the electricity with the wiring plug, make the heating sleeve heating, through setting up the heating sleeve, heat the heat preservation to annotating the downthehole remaining colloidal sol material of material, the next plastic products of being convenient for use of moulding plastics, the waste of less soluble sizing material, resources are saved avoids annotating downthehole colloidal sol material cooling of material and shaping for annotate downthehole colloidal sol material of material and can not use, cause a large amount of wastes.

Preferably, a pair of rotation groove has been seted up on one side lateral wall of fixed die holder, and is a pair of rotate the inslot through the axis of rotation and be connected with same bracing piece, the spiro union has the threaded rod on the bracing piece, the one end fixedly connected with of threaded rod changes the hand, the other end fixedly connected with elasticity post of threaded rod, the one end fixedly connected with clearance piece of elasticity post, the clearance piece with notes material hole looks adaptation, fixed die holder is with a pair of stopper of fixedly connected with on the lateral wall of one side of the position department that the rotation groove corresponds.

Further, after the end of moulding plastics, the bracing piece rotates, it is spacing to it until the stopper, place the clearance piece downthehole at notes material, rotate and change the hand, it drives the threaded rod and rotates and remove to change the hand, the threaded rod drives elasticity post and clearance piece and removes along annotating downthehole the moving of material, the clearance piece is to annotating downthehole remaining colloidal sol material of material clean up, the elasticity post has the function of bending, can bend in annotating the material hole and handle and bend, make the clearance piece can carry out remaining colloidal sol material clearance to whole notes material hole, avoided remaining colloidal sol material to pile up the jam that causes the notes material hole, the pollution of injection moulding product has been caused to remaining different colloidal sol materials.

Preferably, a hook is fixedly connected to the side wall of one side of the supporting rod, an elastic rope ring is fixedly connected to the side wall of one side of the fixed die holder, and the elastic rope ring is sleeved on the hook.

Through setting up elasticity becket bridle and couple, be convenient for when the bracing piece does not use, carry out the rigidity.

Preferably, the support rod comprises a pair of cross rods and a connecting plate fixedly connected to one ends of the pair of cross rods.

Preferably, a pair of top holes are formed in the side wall of one side of the fixed die holder and the side wall of one side of the fixed die, the top holes are communicated with the die cavity, a pair of ejector rods are arranged on one side of the fixed die holder, one ends of the pair of ejector rods penetrate through the pair of top holes respectively and extend into the die cavity, a push-out spring is sleeved on the ejector rods, two ends of the push-out spring are fixedly connected with the fixed die holder and the ejector rods respectively, a pair of pressure rods are fixedly connected to the side wall of one side of the male die, and the pair of pressure rods correspond to the pair of ejector rods respectively in position.

Furthermore, when the male die and the film groove on the fixed die are matched, the pressure rod on the male die is contacted with the ejector rod and pushes the ejector rod to move along the ejector hole until the male die and the fixed die are completely matched, at the moment, the push-out spring deforms to generate elastic force, after injection molding is completed, the male die and the fixed die are separated, the ejector rod does not bear the pressure of the pressure rod and pushes the ejector rod to return under the elastic force of the push-out spring, and therefore the ejector rod pushes the formed plastic product out of the film groove, the formed plastic product is convenient to take out from the film groove, and operation is convenient.

Preferably, four guide columns are fixedly connected to the side wall of one side of the fixed die holder, and one ends of the four guide columns penetrate through the movable die holder.

In conclusion, the technical effects and advantages of the invention are as follows:

1. the invention has reasonable structure, the male die is matched with the die cavity on the fixed die and is matched with the die cavity to form a die cavity, when the male die is worn after long service time in the injection molding process of the rubber die, the stud is rotated, rotates and moves along the threaded hole on the movable die holder, and pushes the male die to slide along the sliding groove, thereby compensating the wear loss of the male die, ensuring the precision of the injection molding size of the product, being durable, improving the matching precision of the movable die and the fixed die by arranging the positioning pin and the positioning hole, and further improving the size precision of the injection molding product;

2. according to the invention, the output end of the motor rotates to drive the fan assembly to rotate, the fan assembly blows external cold air into the air inlet hole through the air inlet cylinder and then flows into the cold air cavity, the cold air brings away heat on the fixed die in the cold air cavity, so that the temperature in the film groove is reduced, and finally the hot air is discharged outside through the air outlet hole;

3. according to the invention, after the sol material is injected into the die cavity through the material injection hole, the rotating shaft is rotated, the rotating shaft rotates to drive the cam to rotate, the cam rotates to push the push rod to drive the sealing plate to move along the moving groove until the sealing plate partitions the material injection hole into two parts, so that the length of the material injection hole is shortened, and redundant materials and waste materials formed in the material injection hole after the plastic product is formed are shortened, so that the waste of raw materials is reduced, the wiring plug is plugged with electricity to heat the heating sleeve, the residual sol material in the material injection hole is heated and insulated by arranging the heating sleeve, the next plastic product is convenient to use by injection molding, the waste of the sol material is reduced, resources are saved, the sol material in the material injection hole is prevented from being cooled and formed, and the sol material in the material injection hole cannot be used, so that a large amount;

4. according to the invention, after injection molding is finished, the supporting rod is rotated until the limiting block limits the supporting rod, the cleaning block is placed in the material injection hole, the rotating hand is rotated to drive the threaded rod to rotate and move, the threaded rod drives the elastic column and the cleaning block to move along the material injection hole, the cleaning block cleans up residual sol materials in the material injection hole, the elastic column has a bending function and can be bent at the bending position of the material injection hole, so that the cleaning block can clean up the residual sol materials in the whole material injection hole, the blockage of the material injection hole due to the accumulation of the residual sol materials is avoided, and the pollution of injection molding products due to the residual different sol materials is avoided;

5. according to the invention, when the male die and the film groove on the fixed die are closed, the pressure rod on the male die is contacted with the ejector rod and pushes the ejector rod to move along the ejector hole until the male die and the fixed die are completely closed, at the moment, the push-out spring deforms to generate elastic force, after injection molding is completed, the male die and the fixed die are separated, the ejector rod does not bear the pressure of the pressure rod, and under the elastic force of the push-out spring, the ejector rod is pushed to return, so that the ejector rod pushes the molded plastic product out of the film groove, and the molded plastic product is convenient to take out from the film groove.

Drawings

FIG. 1 is a first perspective view of a plastic mold;

FIG. 2 is a second perspective view of the plastic mold;

FIG. 3 is a third perspective view of the plastic mold;

FIG. 4 is a schematic view of a first view partially cut-away perspective structure of the stationary die holder in mating assembly;

FIG. 5 is a schematic view of a second perspective partially cut-away structure of the stationary die holder in cooperation with the stationary die holder;

FIG. 6 is a schematic view of a partially cut-away structure of a movable mold base in cooperation with assembly;

FIG. 7 is an enlarged perspective view of the structure at A in FIG. 4;

fig. 8 is a partially enlarged perspective view of fig. 4.

In the figure: 1. moving the die holder; 2. fixing a die holder; 3. a fixed mold; 4. an air exhaust hole; 5. positioning holes; 6. a stud; 7. a die cavity; 8. a guide post; 9. moving the mold; 10. a male die; 11. a pressure lever; 12. positioning pins; 13. a material injection hole; 14. a support bar; 15. a threaded rod; 16. a wiring plug; 17. a top rod; 18. a push-out spring; 19. a rotating shaft; 20. mounting a plate; 21. a dust screen; 22. an air inlet cylinder; 23. a limiting block; 24. heating the sleeve; 25. an elastic column; 26. a cold air chamber; 27. an air inlet hole; 28. a motor; 29. a fan assembly; 30. a fixing plate; 31. cleaning the block; 32. a chute; 33. a cam; 34. a sealing plate; 35. a return spring; 36. hooking; 37. an elastic string loop; 38. a guide rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1-8, the durable plastic mold with high precision includes a movable mold base 1, a fixed mold base 2, a movable mold 9 fixedly connected to a side wall of the movable mold base 1, and a fixed mold 3 fixedly connected to a side wall of the fixed mold base 2, wherein the movable mold base 1 and the movable mold 9, and the fixed mold base 2 and the fixed mold 3 may be an integral structure in the prior art, or may be separate structures in the prior art that are fixedly connected by welding.

The spout 32 has been seted up on one side lateral wall of removal mould 9, sliding connection has terrace die 10 in the spout 32, a pair of guiding hole has been seted up on one side lateral wall of terrace die 10, equal sliding connection has guide bar 38 in a pair of guiding hole, the one end fixed connection of guide bar 38 is on removing the die holder 1, threaded hole has been seted up on one side lateral wall of removing the die holder 1, it is connected with double-screw bolt 6 to rotate on one side lateral wall of terrace die 10, the one end spiro union of double-screw bolt 6 is on the screw hole, and outside extending to the screw hole, four locating pins 12 of fixedly connected with on one side lateral wall of removal mould 9, locating pin 12 can be any one kind of metal pin among the prior art.

Four positioning holes 5 are formed in the side wall of one side of the fixed die 3, four positioning pins 12 correspond to the positions of the four positioning holes 5 respectively, a die groove 7 is formed in the fixed die 3, the die groove 7 is matched with the male die 10, a material injection hole 13 is formed in the side wall of one side of the fixed die base 2, and the material injection hole 13 is communicated with the die groove 7.

By means of the structure, the male die 10 is matched with the die groove 7 on the fixed die 3 and is matched with the fixed die to form a die cavity, when the male die 10 is worn after long service life in the injection molding process of the rubber die, the stud 6 is rotated and rotates along the threaded hole in the movable die holder 1 and moves, the male die 10 is pushed to slide along the sliding groove 32, the abrasion loss of the male die 10 is compensated, the precision of the injection molding size of a product is ensured, and the rubber die is durable, and through the arrangement of the positioning pin 12 and the positioning hole 5, the matching precision of the movable die 9 and the fixed die 3 is improved, and the size precision of the injection molding.

As a preferred implementation manner in this embodiment, the fixed mold 3 is provided with air inlet holes 27 and air outlet holes 4 on two side walls respectively, the fixed mold 3 is provided with a cold air cavity 26 inside, the air inlet holes 27 and the air outlet holes 4 are communicated with the cold air cavity 26 respectively, one side of the fixed mold 3 is provided with an air inlet drum 22, one end of the air inlet drum 22 extends into the air inlet holes 27, the air inlet drum 22 is internally and fixedly connected with a dust screen 21, the inner wall of the air inlet drum 22 is fixedly connected with a fixed plate 30, one side wall of the fixed plate 30 is fixedly connected with a motor 28, and the output end of the motor 28 is fixedly sleeved with a fan assembly 29. The motor 28 may be any type known in the art, such as: 5IK120 RGN. The output end of the motor 28 rotates to drive the fan assembly 29 to rotate, the fan assembly 29 blows outside cold air to the air inlet hole 27 through the air inlet cylinder 22 and then flows into the cold air cavity 26, the cold air brings away heat on the fixed die 3 in the cold air cavity 26, so that the temperature in the film groove 7 is reduced, finally, the hot air is discharged outside through the air outlet hole 4, through the arrangement of the motor 28, the fan assembly 29 and the cold air cavity 26, the rapid cooling of the die cavity is realized, the cooling forming of injection molding parts is accelerated, the forming speed of injection molding products is improved, through the arrangement of the dustproof net 21, the situation that outside dust and other impurities enter the air inlet hole 27 and the cold air cavity 26 and the blockage of the cold air cavity 26 is caused is avoided.

In this embodiment, the side wall of the air inlet cylinder 22 is fixedly connected with the mounting plate 20, and the side wall of one side of the mounting plate 20 is fixedly connected to the fixed die holder 2.

As a preferred implementation manner in this embodiment, a placing groove is formed in the fixed mold 3, a rotating hole is formed in one side wall of the fixed mold 3, the rotating hole is communicated with the placing groove, a moving groove is formed in an inner wall of a bottom side of the placing groove, the moving groove is communicated with the material injection hole 13, a rotating shaft 19 is rotatably connected in the rotating hole, one end of the rotating shaft 19 extends out of the rotating hole, a cam 33 is fixedly sleeved on the rotating shaft 19, the cam 33 is located in the placing groove, a sealing plate 34 is arranged in the moving groove, a push rod is fixedly connected to a top of the sealing plate 34, a return spring 35 is sleeved on the push rod, two ends of the return spring 35 are respectively fixedly connected with the push rod and the fixed mold 3, and the sealing. After the sol material is injected into the die cavity through the material injection hole 13, the rotating shaft 19 is rotated, the rotating shaft 19 rotates to drive the cam 33 to rotate, the cam 33 rotates to push the push rod to drive the sealing plate 34 to move along the moving groove until the sealing plate 34 separates the material injection hole 13 into two parts, so that the length of the material injection hole 13 is shortened, excess materials and waste materials formed in the material injection hole 13 after the plastic product is molded are shortened, and waste of raw materials is reduced.

In this embodiment, a heating sleeve 24 is provided in the fixed mold 3, the heating sleeve 24 is coaxial with the injection hole 13 on the fixed mold base 2, and the wiring plug 16 is fixedly connected to the heating sleeve 24. Insert the electricity with wiring plug 16, make heating sleeve 24 heating, through setting up heating sleeve 24, heat the heat preservation to annotating remaining colloidal sol material in the material hole 13, the next plastic products of being convenient for use of moulding plastics, the waste of less soluble sizing material, resources are saved avoids annotating the colloidal sol material cooling and shaping in the material hole 13 for annotate the colloidal sol material in the material hole 13 and can not use, cause a large amount of wastes.

As a preferred embodiment in this embodiment, a pair of rotating grooves is formed in a side wall of the fixed die holder 2, the pair of rotating grooves are rotatably connected with the same supporting rod 14 through a rotating shaft, the supporting rod 14 is screwed with a threaded rod 15, one end of the threaded rod 15 is fixedly connected with a rotating handle, the other end of the threaded rod 15 is fixedly connected with an elastic column 25, one end of the elastic column 25 is fixedly connected with a cleaning block 31, the cleaning block 31 is matched with the material injection hole 13, and a pair of limiting blocks 23 is fixedly connected to a side wall of the fixed die holder 2 at positions corresponding to the pair of rotating grooves. After the injection molding is finished, the supporting rod 14 is rotated until the limiting block 23 limits the supporting rod, namely, the supporting rod 14 is rotated to a state that the axial direction of the threaded rod 15 is parallel to the axial direction of the heating sleeve 24, and the position of the limiting block 23 is set to be capable of preventing the supporting rod 14 from continuing to rotate. Place clearance piece 31 in annotating material hole 13, rotate and change the hand, it drives threaded rod 15 and rotates and remove to change the hand, threaded rod 15 drives elastic column 25 and clearance piece 31 and removes along annotating material hole 13 is interior, clearance piece 31 extrudes the clean up to annotating remaining colloidal sol material in the material hole 13, elastic column 25 has the function of bending, can bend in annotating material hole 13, make clearance piece 31 can carry out remaining colloidal sol material clearance to whole notes material hole 13, avoided remaining colloidal sol material pile to cause the jam in annotating material hole 13, avoided remaining different colloidal sol materials to cause injection moulding product's pollution.

In this embodiment, a hook 36 is fixedly connected to a side wall of the supporting rod 14, an elastic rope ring 37 is fixedly connected to a side wall of the fixing die holder 2, and the elastic rope ring 37 is sleeved on the hook 36. This has the advantage of facilitating positional fixing when the support bar 14 is not in use (see the position in figure 8). In this state, one side of the supporting rod 14 is pulled by the elastic string ring 37, and the other side is restricted by the stopper 23, so that the supporting rod 14 is fixed.

In this embodiment, the support rod 14 includes a pair of cross rods and a connecting plate fixedly connected to one end of the pair of cross rods.

As a preferred embodiment in this embodiment, a pair of top holes are formed on the side walls of the fixed die holder 2 and the fixed die 3, the top holes are communicated with the die cavity 7, a pair of top rods 17 are arranged on one side of the fixed die holder 2, one ends of the pair of top rods 17 respectively penetrate through the pair of top holes and extend into the die cavity 7, a push-out spring 18 is sleeved on the top rod 17, two ends of the push-out spring 18 are respectively fixedly connected with the fixed die holder 2 and the top rods 17, a pair of compression rods 11 are fixedly connected to the side wall of the male die 10, and the pair of compression rods 11 respectively correspond to the positions of the pair of top rods 17. When the male die 10 is matched with the film groove 7 on the fixed die 3, the pressure rod 11 on the male die 10 is contacted with the ejector rod 17 and pushes the ejector rod 17 to move along the top hole until the male die 10 and the fixed die 3 are completely matched, at the moment, the push-out spring 18 deforms to generate elasticity, after injection molding is completed, the male die 10 and the fixed die 3 are separated, the ejector rod 17 does not bear the pressure of the pressure rod 11, the ejector rod 17 is pushed to return under the action of the elasticity of the push-out spring 18, and therefore the ejector rod 17 pushes the molded plastic product out of the film groove 7, the molded plastic product is convenient to take out from the film groove 7, and operation is convenient.

In this embodiment, four guide posts 8 are fixedly connected to a side wall of one side of the fixed die holder 2, and one ends of the four guide posts 8 penetrate through the movable die holder 1.

The working principle of the invention is as follows:

the movable die holder 1 drives the movable die 9 and the male die 10 to move along the direction of the guide post 8, when the male die 10 is matched with the film groove 7 on the fixed die 3, the pressure rod 11 on the male die 10 is contacted with the ejector rod 17 and pushes the ejector rod 17 to move along the ejector hole until the male die 10 is completely matched with the fixed die 3, the soluble glue material is injected into the die cavity from the material injection hole 13, after the injection molding is finished, the male die 10 and the fixed die 3 are separated, the ejector rod 17 is not under the pressure of the pressure rod 11 and pushes the ejector rod 17 to return under the elastic force of the push-out spring 18, so that the ejector rod 17 pushes the molded plastic product out of the film groove 7, the molded plastic product is convenient to take out of the molded plastic product from the.

When the male die 10 is worn after long service life, the stud 6 is rotated, the stud 6 rotates and moves along a threaded hole in the movable die holder 1, the male die 10 is pushed to slide along the sliding groove 32, accordingly, the abrasion loss of the male die 10 is compensated, the precision of the injection molding size of a product is ensured, the male die is durable, the matching precision of the movable die 9 and the fixed die 3 is improved through the arrangement of the positioning pin 12 and the positioning hole 5, and the size precision of the injection molding product is further improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. Durable type plastic mould with precision is high, including removing die holder (1), fixed die holder (2), fixed connection in remove removal mould (9) on die holder (1) one side lateral wall, fixed connection in fixed die (3) on fixed die holder (2) one side lateral wall, its characterized in that: a sliding groove (32) is formed in the side wall of one side of the movable die (9), a male die (10) is connected in the sliding groove (32) in a sliding mode, a pair of guide holes are formed in the side wall of one side of the male die (10), a guide rod (38) is connected in the pair of guide holes in a sliding mode, one end of the guide rod (38) is fixedly connected to the movable die holder (1), a threaded hole is formed in the side wall of one side of the movable die holder (1), a stud (6) is connected to the side wall of one side of the male die (10) in a rotating mode, one end of the stud (6) is connected to the threaded hole in a threaded mode and extends out of the threaded hole, four positioning pins (12) are fixedly connected to the side wall of one side of the male die (10), four positioning holes (5) are formed in the side wall of one side of the movable die (9), the die is characterized in that a die groove (7) is formed in the fixed die (3), the die groove (7) is matched with the male die (10), a material injection hole (13) is formed in the side wall of one side of the fixed die holder (2), and the material injection hole (13) is communicated with the die groove (7).

2. The durable plastic mold with high precision according to claim 1, wherein: seted up air inlet hole (27), air discharge hole (4) on the both sides lateral wall of fixed mould (3) respectively, cold wind chamber (26) have been seted up in fixed mould (3), air inlet hole (27) air discharge hole (4) respectively with cold wind chamber (26) are linked together, one side of fixed mould (3) is equipped with an air inlet section of thick bamboo (22), the one end of an air inlet section of thick bamboo (22) extends to in air inlet hole (27), fixedly connected with dust screen (21) in the air inlet section of thick bamboo (22), fixedly connected with fixed plate (30) on the inner wall of an air inlet section of thick bamboo (22), fixedly connected with motor (28) on one side lateral wall of fixed plate (30), fixed fan assembly (29) of having cup jointed on motor (28) output.

3. The durable plastic mold with high precision according to claim 2, wherein: fixedly connected with mounting panel (20) on the lateral wall of air inlet section of thick bamboo (22), one side lateral wall fixed connection of mounting panel (20) is in on fixed die holder (2).

4. The durable plastic mold with high precision according to claim 1, wherein: a placing groove is arranged in the fixed die (3), a rotating hole is arranged on the side wall of one side of the fixed die (3), the rotating hole is communicated with the placing groove, a moving groove is arranged on the inner wall of the bottom side of the placing groove, the moving groove is communicated with the material injection hole (13), a rotating shaft (19) is rotatably connected in the rotating hole, one end of the rotating shaft (19) extends out of the rotating hole, a cam (33) is fixedly sleeved on the rotating shaft (19), the cam (33) is positioned in the placing groove, a sealing plate (34) is arranged in the moving groove, the top of the sealing plate (34) is fixedly connected with a push rod, a return spring (35) is sleeved on the push rod, two ends of the return spring (35) are respectively fixedly connected with the push rod and the fixed die (3), and the sealing plate (34) is matched with the material injection hole (13).

5. The durable plastic mold with high precision according to claim 1, wherein: be equipped with heating sleeve pipe (24) in fixed mould (3), heating sleeve pipe (24) with be located on fixed die holder (2) annotate material hole (13) coaxial, fixedly connected with wiring plug (16) on heating sleeve pipe (24).

6. The durable plastic mold with high precision according to claim 1, wherein: seted up a pair of rotation groove on one side lateral wall of fixed die holder (2), it is a pair of rotate the inslot through the axis of rotation and be connected with same bracing piece (14), threaded rod (15) are gone up to bracing piece (14) spiro union, the one end fixedly connected with of threaded rod (15) changes the hand, the other end fixedly connected with elasticity post (25) of threaded rod (15), the one end fixedly connected with clearance piece (31) of elasticity post (25), clearance piece (31) with annotate material hole (13) looks adaptation, fixed die holder (2) are with a pair of fixedly connected with a pair of stopper (23) on the lateral wall of one side of the position department that the rotation groove corresponds.

7. The durable plastic mold with high precision according to claim 6, wherein: the support rod is characterized in that a hook (36) is fixedly connected to the side wall of one side of the support rod (14), an elastic rope ring (37) is fixedly connected to the side wall of one side of the fixed die holder (2), and the elastic rope ring (37) is sleeved on the hook (36).

8. The durable plastic mold with high precision according to claim 6, wherein: the supporting rod (14) comprises a pair of cross rods and a connecting plate fixedly connected to one ends of the cross rods.

9. The durable plastic mold with high precision according to claim 1, wherein: the die comprises a fixed die holder (2), a pair of top holes are formed in the side wall of one side of a fixed die (3), the top holes are communicated with a die groove (7), a pair of ejector rods (17) are arranged on one side of the fixed die holder (2), one end of each ejector rod (17) penetrates through the corresponding top hole and extends into the die groove (7), a push-out spring (18) is sleeved on each ejector rod (17), two ends of each push-out spring (18) are fixedly connected with the fixed die holder (2) and the ejector rods (17), a pair of pressing rods (11) are fixedly connected to the side wall of one side of a male die (10), and the pair of pressing rods (11) correspond to the corresponding ejector rods (17).

10. The durable plastic mold with high precision according to claim 1, wherein: the die comprises a fixed die holder (2), wherein the side wall of one side of the fixed die holder (2) is fixedly connected with four guide columns (8), and one ends of the four guide columns (8) penetrate through the movable die holder (1).