Temperature control structure of injection molding machine

Abstract

The invention belongs to the technical field of injection molding machines, and particularly relates to a temperature control structure of an injection molding machine, the temperature control structure comprises an injection molding mechanism, a driving mechanism and a temperature dredging mechanism, the injection molding mechanism comprises an injection molding machine body, a hopper and a feed inlet, the injection molding machine body is provided with the hopper, and the feed inlet is formed in the side edge of the top of the hopper; the driving mechanism is arranged at the top of the hopper and comprises a driving support, a reciprocating lead screw, a driving motor, a reciprocating sliding block and a rack plate, and the driving support is fixed to the top of the hopper, so that injection molding liquid is evenly mixed, heat of the injection molding liquid is evenly dissipated, internal plastic is evenly heated and melted conveniently, and the hot melting efficiency of injection molding is improved; and during rotation, inner caked plastic balls are smashed through outer blades of the electric heating disc rod and inner blades of the outer screw rod, the mixing efficiency is further improved, and when the outer screw rod rotates, the inner wall of the hopper is scraped, so that injection molding liquid is prevented from being adhered to the inner wall of the hopper.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machines, in particular to a temperature control structure of an injection molding machine. Background Art

[0002] Injection molding machine is also called injection molding machine or injection machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It is divided into vertical, horizontal and all-electric types. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it ejected and fill the mold cavity.

[0003] When an injection molding machine is injecting, it is necessary to first heat the plastic to melt the plastic to form an injection molding liquid, and to add plastic in time when the injection molding liquid is reduced. However, the temperature of the newly added plastic is relatively low, which makes the temperature distribution of the injection molding liquid uneven after it is added, and the temperature cannot be controlled to be evenly distributed. In addition, the melted plastics on the surface are easy to stick to each other and form clumps, which affects the melting efficiency. For this reason, the present application proposes a temperature control structure for an injection molding machine. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above problems and / or problems existing in the existing injection molding machines, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a temperature control structure of an injection molding machine, in which the electric heating disc rod heats and melts the plastic, and the spirally rotating electric heating disc rod and the outer spiral rod have the effect of spiral conveying. The electric heating disc rod drives the injection molding liquid at the center to be transported up and down, and the outer spiral rod drives the injection molding liquid on the outside to be transported up and down. The conveying directions of the injection molding liquid on the inside and the outside are opposite, so that the injection molding liquid is evenly mixed, and the heat of the injection molding liquid is evenly dispersed, which facilitates the uniform heating and melting of the internal plastic, improves the hot melt efficiency of injection molding, and when rotating, the internal agglomerated plastic clumps are crushed by the outer blade of the electric heating disc rod and the inner blade of the outer spiral rod, further improving the mixing efficiency. When the outer spiral rod rotates, the inner wall of the hopper is scraped to prevent the injection molding liquid from adhering to the inner wall of the hopper.

[0007] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions: A temperature control structure of an injection molding machine, comprising: The injection molding mechanism comprises an injection molding machine body, a hopper and a feed port, wherein the hopper is arranged on the injection molding machine body, and the feed port is arranged on the top side of the hopper; A driving mechanism, arranged on the top of the hopper; A temperature-removing mechanism is arranged in the hopper and connected to the driving mechanism. The temperature-removing mechanism includes an electric heating disc rod, an outer blade, an inner gear, an inner gear ring, an outer spiral rod, an inner blade, a transmission shaft and a transmission gear. The top of the electric heating disc rod is rotatably connected to the center of the hopper, an outer blade is arranged on the outer side of the electric heating disc rod, an inner gear is arranged on the upper end of the electric heating disc rod, the inner gear ring is rotatably connected to the hopper, the outer side of the inner gear ring is connected to the outer spiral rod, the inner blade is arranged on the inner side of the outer spiral rod, the top of the hopper is rotatably connected to the transmission shaft, transmission gears are arranged on the top and bottom of the transmission shaft, and the top transmission gear is connected to the output end of the driving mechanism.

[0008] As a preferred solution of the temperature control structure of an injection molding machine described in the present invention, the driving mechanism includes a driving bracket, a reciprocating screw, a driving motor, a reciprocating slider and a rack plate, the driving bracket is fixed on the top of the hopper, a reciprocating screw is arranged on the driving bracket, a driving motor is arranged at one end of the reciprocating screw, the driving motor is fixed on the driving bracket, a reciprocating slider is arranged on the reciprocating screw, the side of the reciprocating slider is connected to the rack plate, the transmission gear at the top is meshed with the rack plate, and the transmission gear at the bottom is meshed between the internal gear and the internal gear ring.

[0009] As a preferred solution of the temperature control structure of an injection molding machine described in the present invention, wherein: a crushing mechanism is arranged on the feed port, and the crushing mechanism includes a crushing roller, a driven bevel gear, a rotating frame, a driving bevel gear, an eccentric connecting rod, a connecting shaft, a turntable, an eccentric shaft and a transmission connecting rod, the crushing roller is rotatably connected on both sides inside the feed port, a driven bevel gear is arranged at the front end of the roller shaft of the crushing roller, a rotating frame is arranged on both sides of the front side wall of the feed port, the rotating frame is rotatably connected to the driving bevel gear, an eccentric connecting rod is arranged between the driving bevel gears, the connecting shaft is connected to the other end of the reciprocating screw, an eccentric shaft is arranged at the outer end of the connecting shaft, and a transmission connecting rod is rotatably connected between the eccentric shaft and the eccentric connecting rod.

[0010] As a preferred solution of the temperature control structure of an injection molding machine described in the present invention, wherein: a dust exhaust mechanism is arranged on the side of the feed port, and the dust exhaust mechanism includes an exhaust pipe, an exhaust shaft, an impeller, a speed-changing driven gear, a speed-changing transmission shaft, a speed-changing large gear, a speed-changing small gear and a speed-changing driving gear, the exhaust pipe is connected to the side of the feed port, the exhaust pipe is rotatably connected to the exhaust shaft, an impeller is arranged at one end of the exhaust shaft located in the exhaust pipe, a speed-changing driven gear is arranged at one end of the exhaust shaft located outside the exhaust pipe, the speed-changing transmission shaft is rotatably connected to the side of the feed port, a speed-changing large gear meshing with the speed-changing driven gear is arranged on the speed-changing transmission shaft, a speed-changing small gear is arranged on the speed-changing transmission shaft, and a speed-changing driving gear meshing with the speed-changing small gear is arranged at the rear end of the roller shaft of the crushing roller.

[0011] As a preferred solution of the temperature control structure of the injection molding machine described in the present invention, a net bag is provided at the end of the exhaust pipe, and the net bag is tied to the outer wall of the end of the exhaust pipe.

[0012] As a preferred solution of the temperature control structure of an injection molding machine described in the present invention, the heating coil rod and the outer spiral rod have the same spiral direction, and when the transmission shaft rotates, the heating coil rod and the outer spiral rod rotate in opposite directions.

[0013] As a preferred solution of the temperature control structure of an injection molding machine described in the present invention, a collar is provided at the top center of the inner cavity of the hopper, and the inner gear ring is rotatably connected in the collar through a bearing.

[0014] As a preferred solution of the temperature control structure of an injection molding machine described in the present invention, wherein: the side wall of the hopper is provided with a transparent window, and the transparent window is an explosion-proof window.

[0015] As a preferred solution of the temperature control structure of the injection molding machine described in the present invention, the outer spiral rod is in contact with the inner wall of the hopper.

[0016] As a preferred solution of the temperature control structure of the injection molding machine described in the present invention, the hopper adopts a hollow inner wall, and an auxiliary heating rod is arranged in the hollow part.

[0017] Compared with the prior art: the present invention puts the injection-molded plastic into the hopper through the feed port to melt, drives the reciprocating screw to rotate through the driving motor, drives the reciprocating slider to move back and forth, and the reciprocating slider synchronously drives the rack plate to reciprocate, the rack plate meshes and drives the top transmission gear to rotate, the top transmission gear drives the bottom transmission gear to rotate through the transmission shaft, the bottom transmission gear drives the electric heating plate rod to rotate in the opposite direction through the internal gear, and the bottom transmission gear drives the outer spiral rod to rotate in the same direction through the inner gear ring, the electric heating plate rod heats and melts the plastic, and the spirally rotating electric heating plate rod and the outer spiral rod rotate in the same direction. The screw rod plays the role of spiral conveying. The electric heating plate rod drives the injection liquid at the center to be transported up and down. The outer screw rod drives the injection liquid on the outside to be transported up and down. The conveying directions of the injection liquid on the inside and outside are opposite, so that the injection liquid is evenly mixed and the heat of the injection liquid is evenly evacuated, which facilitates the uniform heating and melting of the internal plastic, improves the hot melt efficiency of injection molding, and when rotating, the outer blade of the electric heating plate rod and the inner blade of the outer screw rod are used to break up the internal agglomerated plastic clumps, further improving the mixing efficiency. When the outer screw rod rotates, the inner wall of the hopper is scraped to prevent the injection liquid from adhering to the inner wall of the hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 It is a schematic diagram of the shaft side structure of the present invention; Figure 2 This is a schematic diagram of the external structure of the hopper of the present invention; Figure 3 This is a schematic diagram of the internal connection structure of the hopper of the present invention; Figure 4 It is a schematic diagram of the connection structure between the driving mechanism and the temperature-relieving mechanism of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure of the middle A section; Figure 6 This is a schematic diagram of the structure of the crushing mechanism of the present invention; Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure of the middle B section; Figure 8 It is a schematic diagram of the structure of the dust removal mechanism of the present invention.

[0019] In the figure: 100 injection molding mechanism, 110 injection molding machine body, 120 hopper, 130 feed port, 200 driving mechanism, 210 driving bracket, 220 reciprocating screw rod, 230 driving motor, 240 reciprocating slider, 250 rack plate, 300 heat release mechanism, 310 electric heating plate rod, 311 outer blade, 320 inner gear, 330 inner gear ring, 340 outer screw rod, 341 inner blade, 350 transmission shaft, 360 transmission gear, 400 crushing Mechanism, 410 crushing roller, 420 driven bevel gear, 430 rotating frame, 440 driving bevel gear, 450 eccentric connecting rod, 460 connecting shaft, 470 turntable, 480 eccentric shaft, 490 driving connecting rod, 500 dust exhaust mechanism, 510 exhaust pipe, 520 exhaust shaft, 530 impeller, 540 speed-changing driven gear, 550 speed-changing transmission shaft, 560 speed-changing large gear, 570 speed-changing small gear, 580 speed-changing driving gear, 600 net bag. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0023] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] The present invention provides a temperature control structure of an injection molding machine. The electric heating disc rod heats and melts the plastic. The spirally rotating electric heating disc rod and the outer spiral rod play a spiral conveying effect. The electric heating disc rod drives the injection molding liquid at the center to be conveyed up and down, and the outer spiral rod drives the injection molding liquid on the outside to be conveyed up and down. The conveying directions of the injection molding liquid on the inside and the outside are opposite, so that the injection molding liquid is evenly mixed, the heat of the injection molding liquid is evenly evacuated, and the internal plastic is evenly heated and melted, thereby improving the hot melting efficiency of injection molding. When rotating, the plastic mass agglomerated inside is crushed by the outer blade of the electric heating disc rod and the inner blade of the outer spiral rod, thereby further improving the mixing efficiency. When the outer spiral rod rotates, the inner wall of the hopper is scraped to prevent the injection molding liquid from adhering to the inner wall of the hopper. Please refer to Figure 1-Figure 8 , including: an injection molding mechanism 100, a driving mechanism 200 and a temperature-removing mechanism 300.

[0025] The injection molding mechanism 100 includes an injection molding machine body 110, a hopper 120 and a feed port 130. The hopper 120 is disposed on the injection molding machine body 110, and the feed port 130 is disposed on the top side of the hopper 120. The injection molding machine body 110 includes an injection device, a mold and a clamping device. The hopper 120 is located on the injection device. The plastic to be melted is added into the hopper 120 through the feed port 130 and is used for injection molding after being melted.

[0026] The driving mechanism 200 is arranged on the top of the hopper 120, and the driving mechanism 200 includes a driving bracket 210, a reciprocating screw rod 220, a driving motor 230, a reciprocating slider 240 and a rack plate 250. The driving bracket 210 is fixed to the top of the hopper 120, the reciprocating screw rod 220 is arranged on the driving bracket 210, the driving motor 230 is arranged at one end of the reciprocating screw rod 220, the driving motor 230 is fixed on the driving bracket 210, the reciprocating slider 240 is arranged on the reciprocating screw rod 220, and the side of the reciprocating slider 240 is connected to the rack plate 250; Among them, the driving bracket 210 adopts a symmetrically arranged rectangular plate with an axial hole. The reciprocating screw 220 is rotatably connected to the axial hole on the rectangular plate. The reciprocating screw 220 is driven to rotate by the driving motor 230, and the reciprocating screw 220 drives the reciprocating slider 240 to move back and forth horizontally. The reciprocating slider 240 synchronously drives the rack plate 250 to reciprocate.

[0027] The temperature-removing mechanism 300 is arranged in the hopper 120, and the temperature-removing mechanism 300 includes an electric heating plate rod 310, an outer blade 311, an inner gear 320, an inner gear ring 330, an outer spiral rod 340, an inner blade 341, a transmission shaft 350 and a transmission gear 360. The top of the electric heating plate rod 310 is rotatably connected to the center of the hopper 120, the outer blade 311 is arranged on the outer side of the electric heating plate rod 310, the inner gear 320 is arranged on the upper end of the electric heating plate rod 310, the inner gear ring 330 is rotatably connected to the hopper 120, the outer side of the inner gear ring 330 is connected to the outer spiral rod 340, the inner blade 341 is arranged on the inner side of the outer spiral rod 340, the top of the hopper 120 is rotatably connected to the transmission shaft 350, and the transmission gears 360 are arranged on the top and bottom of the transmission shaft 350; Among them, a collar is provided at the center of the top of the inner cavity of the hopper 120, and the inner gear ring 330 is rotatably connected in the collar through a bearing. When the rack plate 250 moves, the rack plate 250 meshes and drives the transmission gear 360 at the top to rotate, and the transmission gear 360 at the top drives the transmission gear 360 at the bottom to rotate through the transmission shaft 350, and the bottom transmission gear 360 drives the electric heating plate rod 310 to rotate in the opposite direction through the internal gear 320, and at the same time, the bottom transmission gear 360 drives the outer spiral rod 340 to rotate in the same direction through the inner gear ring 330, and the electric heating plate rod 310 is opposite to the outer spiral rod 340. The plastic is heated and melted, and the spirally rotating electric heating plate rod 310 and the outer spiral rod 340 play a spiral conveying effect. The electric heating plate rod 310 drives the injection molding liquid at the center to be transported up and down, and the outer spiral rod 340 drives the injection molding liquid on the outside to be transported up and down. When rotating, the outer blade 311 of the electric heating plate rod 310 and the inner blade 341 of the outer spiral rod 340 are used to break up the internal agglomerated plastic mass, thereby further improving the mixing efficiency. When the outer spiral rod 340 rotates, the inner wall of the hopper 120 is scraped to prevent the injection molding liquid from adhering to the inner wall of the hopper 120.

[0028] Since one end of the reciprocating slider 240 is connected to the reciprocating screw rod 220 and will flip, the top transmission gear 360 is engaged with the rack plate 250, and the bottom transmission gear 360 is engaged between the inner gear 320 and the inner gear ring 330. The top transmission gear 360 is engaged with the rack plate 250 to prevent rotation and limit the position, and the power is transmitted synchronously through the transmission gear 360.

[0029] Since the large pieces of plastic are directly put into the hopper 120, the large pieces of plastic will melt slowly from the outside to the inside when heated, and the melting efficiency is low. Therefore, a crushing mechanism 400 is provided on the feed port 130, and the crushing mechanism 400 includes a crushing roller 410, a driven bevel gear 420, a rotating frame 430, a driving bevel gear 440, an eccentric connecting rod 450, a connecting shaft 460, a rotating disk 470, an eccentric shaft 480 and a transmission connecting rod 490. The crushing roller 410 is rotatably connected to the feed port 1 On both sides of the interior of 30, driven bevel gears 420 are arranged at the front ends of the roller shafts of the crushing rollers 410, rotating racks 430 are arranged at both sides of the front side walls of the feed port 130, the rotating racks 430 are rotatably connected to driving bevel gears 440, eccentric connecting rods 450 are arranged between the driving bevel gears 440, a connecting shaft 460 is connected to the other end of the reciprocating screw rod 220, an eccentric shaft 480 is arranged at the outer end of the connecting shaft 460, and a transmission connecting rod 490 is rotatably connected between the eccentric shaft 480 and the eccentric connecting rod 450; When the reciprocating screw 220 rotates, it synchronously drives the connecting shaft 460 to rotate, the connecting shaft 460 synchronously drives the eccentric shaft 480 to move in a circle, the eccentric shaft 480 synchronously drives the eccentric connecting rod 450 to rotate through the transmission connecting rod 490, the eccentric connecting rod 450 synchronously drives the driving bevel gears 440 on both sides to rotate, the driving bevel gears 440 synchronously mesh and drive the driven bevel gear 420 to rotate, the driven bevel gear 420 drives the crushing roller 410 to rotate, and the rotating crushing roller 410 is used to crush the plastic raw materials put in.

[0030] Since the plastic will be shattered during crushing, during the crushing process, the dust outside the plastic and the dust generated by the crushing will float away, affecting the working environment, and the dust entering the hopper will affect the quality of the injection liquid. For this reason, a dust exhaust mechanism 500 is provided on the side of the feed port 130, and the dust exhaust mechanism 500 includes an exhaust pipe 510, an exhaust shaft 520, an impeller 530, a speed-changing driven gear 540, a speed-changing transmission shaft 550, a speed-changing large gear 560, a speed-changing small gear 570 and a speed-changing driving gear 580. The exhaust pipe 510 is connected to the side of the feed port 130, and the exhaust pipe The exhaust shaft 520 is rotatably connected to the pulverizing roller 410, and an impeller 530 is arranged at one end of the exhaust shaft 520 located in the exhaust pipe 510, and a speed-changing driven gear 540 is arranged at one end of the exhaust shaft 520 located outside the exhaust pipe 510. A speed-changing transmission shaft 550 is rotatably connected to the side of the feed inlet 130, and a speed-changing large gear 560 meshing with the speed-changing driven gear 540 is arranged on the speed-changing transmission shaft 550, and a speed-changing small gear 570 is arranged on the speed-changing transmission shaft 550. A speed-changing driving gear 580 meshing with the speed-changing small gear 570 is arranged at the rear end of the roller shaft of the pulverizing roller 410; Among them, the roller shaft of the crushing roller 410 synchronously drives the speed change driving gear 580 to rotate, the speed change driving gear 580 engages to drive the speed change pinion 570 to rotate, the speed change pinion 570 synchronously drives the speed change large gear 560 to rotate through the speed change transmission shaft 550, the speed change large gear 560 engages to drive the speed change driven gear 540 to rotate, the speed change driven gear 540 drives the impeller 530 to rotate through the exhaust shaft 520, the impeller 530 drives the air flow to extract the gas in the feed port 130, and drives the internal dust and dirt to be extracted.

[0031] Since the extracted dust scatters randomly and affects the working environment, a net bag 600 is provided at the end of the exhaust pipe 510. The net bag 600 is tied to the outer wall of the end of the exhaust pipe 510. After the gas passes through the net bag 600, the dust and dirt in the air flow remain in the net bag 600.

[0032] Since it is necessary to drive the injection liquid inside and outside to move, the heating plate rod 310 and the outer spiral rod 340 have the same spiral direction. When the transmission shaft 350 rotates, the heating plate rod 310 and the outer spiral rod 340 rotate in opposite directions, so that the injection liquid conveying directions inside and outside are opposite.

[0033] Since it is necessary to observe the remaining amount of injection liquid in the hopper 120 and add it in time, a transparent window is provided on the side wall of the hopper 120. The transparent window is an explosion-proof window, through which the remaining amount of injection liquid in the hopper 120 can be observed.

[0034] Since the outer screw rod 340 needs to scrape the material from the hopper 120 , the outer screw rod 340 contacts the inner wall of the hopper 120 , so that the rotating outer screw rod 340 can scrape off the residual material on the inner wall of the hopper 120 .

[0035] In order to improve the heating effect and facilitate the melting of plastic, the hopper 120 adopts a hollow inner wall, and an auxiliary heating rod is arranged in the hollow part to heat the outer side, and cooperate with the internal electric heating plate rod 310 to achieve rapid melting of the plastic.

[0036] In specific use, the plastic to be melted is added into the hopper 120 through the feed port 130, the driving motor 230 drives the reciprocating screw 220 to rotate, the reciprocating screw 220 drives the reciprocating slider 240 to move back and forth, the reciprocating slider 240 synchronously drives the rack plate 250 to reciprocate, when the rack plate 250 moves, the rack plate 250 meshes and drives the top transmission gear 360 to rotate, the top transmission gear 360 drives the bottom transmission gear 360 to rotate through the transmission shaft 350, the bottom transmission gear 360 drives the electric heating plate rod 310 to rotate in the opposite direction through the internal gear 320, and at the same time, the bottom transmission gear 360 drives the outer screw rod 340 to rotate in the same direction through the inner gear ring 330 The electric heating plate rod 310 heats and melts the plastic. The spirally rotating electric heating plate rod 310 and the outer spiral rod 340 play a spiral conveying effect. The electric heating plate rod 310 drives the injection liquid at the center to be transported up and down, and the outer spiral rod 340 drives the injection liquid on the outside to be transported up and down. The conveying directions of the injection liquid on the inside and the outside are opposite, so that the injection liquid is evenly mixed, and the heat of the injection liquid is evenly evacuated, which facilitates the uniform heating and melting of the internal plastic, improves the hot melting efficiency of injection molding, and when rotating, the outer blade 311 of the electric heating plate rod 310 and the inner blade 341 of the outer spiral rod 340 are used to break up the internal agglomerated plastic mass, further improving the mixing efficiency. When the outer spiral rod 340 rotates, the hopper 12 0 is scraped from the inner wall of the hopper 120 to prevent the injection molding liquid from adhering to the inner wall of the hopper 120. When the reciprocating screw 220 rotates, the connecting shaft 460 is synchronously driven to rotate, and the connecting shaft 460 synchronously drives the eccentric shaft 480 to move in a circle. The eccentric shaft 480 synchronously drives the eccentric connecting rod 450 to rotate through the transmission connecting rod 490. The eccentric connecting rod 450 synchronously drives the driving bevel gears 440 on both sides to rotate. The driving bevel gear 440 synchronously meshes and drives the driven bevel gear 420 to rotate. The driven bevel gear 420 drives the crushing roller 410 to rotate. The rotating crushing roller 410 is used to crush the plastic raw materials put in, and the large pieces of plastic raw materials are crushed into small pieces to facilitate melting to form injection molding liquid. The crushing roller 410 The roller shaft synchronously drives the speed change driving gear 580 to rotate, the speed change driving gear 580 meshes and drives the speed change pinion 570 to rotate, the speed change pinion 570 synchronously drives the speed change large gear 560 to rotate through the speed change transmission shaft 550, the speed change large gear 560 meshes and drives the speed change driven gear 540 to rotate, the speed change driven gear 540 drives the impeller 530 to rotate through the exhaust shaft 520, the impeller 530 drives the air flow to extract the gas in the feed port 130, and drives the internal dust and dirt to be extracted, after the gas passes through the net bag 600, the dust and dirt in the air flow remain in the net bag 600, the gas is blown out, and the dust and dirt are collected inside the net bag 600 for centralized treatment.

[0037] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A temperature control structure for an injection molding machine, characterized in that: include: An injection molding mechanism (100) comprises an injection molding machine body (110), a hopper (120) and a feed port (130), wherein the hopper (120) is arranged on the injection molding machine body (110), and the feed port (130) is arranged on a top side of the hopper (120); A driving mechanism (200) is arranged on the top of the hopper (120); The heat-dissipating mechanism (300) is arranged in the hopper (120) and connected to the driving mechanism (200). The heat-dissipating mechanism (300) comprises an electric heating plate rod (310), an outer blade (311), an inner gear (320), an inner gear ring (330), an outer spiral rod (340), an inner blade (341), a transmission shaft (350) and a transmission gear (360). The top end of the electric heating plate rod (310) is rotatably connected to the center of the hopper (120). The outer blade (311) is arranged on the outer side of the electric heating plate rod (310). ), an internal gear (320) is arranged at the upper end of the electric heating plate rod (310), the internal gear ring (330) is rotatably connected to the hopper (120), the outer side of the internal gear ring (330) is connected to the outer screw rod (340), the inner side of the outer screw rod (340) is provided with an inner blade (341), the top of the hopper (120) is rotatably connected to the transmission shaft (350), the top and bottom of the transmission shaft (350) are both provided with transmission gears (360), and the top transmission gear (360) is connected to the output end of the driving mechanism (200).

2. A temperature control structure for an injection molding machine according to claim 1, characterized in that: The driving mechanism (200) comprises a driving bracket (210), a reciprocating screw (220), a driving motor (230), a reciprocating slider (240) and a rack plate (250); the driving bracket (210) is fixed to the top of the hopper (120); the reciprocating screw (220) is arranged on the driving bracket (210); a driving motor (230) is arranged at one end of the reciprocating screw (220); the driving motor (230) is fixed to the driving bracket (210); a reciprocating slider (240) is arranged on the reciprocating screw (220); a side of the reciprocating slider (240) is connected to the rack plate (250); the transmission gear (360) at the top is meshed with the rack plate (250); and the transmission gear (360) at the bottom is meshed between the internal gear (320) and the internal gear ring (330).

3. The temperature control structure of an injection molding machine according to claim 1, characterized in that: The feed port (130) is provided with a pulverizing mechanism (400), the pulverizing mechanism (400) comprising a pulverizing roller (410), a driven bevel gear (420), a rotating frame (430), a driving bevel gear (440), an eccentric connecting rod (450), a connecting shaft (460), a rotating disk (470), an eccentric shaft (480) and a driving connecting rod (490), the pulverizing roller (410) being rotatably connected to both sides of the feed port (130), and a driven bevel gear (420) being provided at the front end of the roller shaft of the pulverizing roller (410). gear (420), rotating frames (430) are arranged on both sides of the front side wall of the feed port (130), the rotating frames (430) are rotatably connected to the driving bevel gears (440), an eccentric connecting rod (450) is arranged between the driving bevel gears (440), the connecting shaft (460) is connected to the other end of the reciprocating screw rod (220), an eccentric shaft (480) is arranged at the outer end of the connecting shaft (460), and a transmission connecting rod (490) is rotatably connected between the eccentric shaft (480) and the eccentric connecting rod (450).

4. The temperature control structure of an injection molding machine according to claim 3, characterized in that: A dust exhaust mechanism (500) is provided on the side of the feed inlet (130), and the dust exhaust mechanism (500) comprises an exhaust pipe (510), an exhaust shaft (520), an impeller (530), a speed-changing driven gear (540), a speed-changing transmission shaft (550), a speed-changing large gear (560), a speed-changing small gear (570), and a speed-changing driving gear (580). The exhaust pipe (510) is connected to the side of the feed inlet (130), and the exhaust pipe (510) is rotatably connected to the exhaust shaft (520). The exhaust shaft (520) is located on the exhaust pipe (510). An impeller (530) is disposed at one end of the exhaust shaft (520) located outside the exhaust pipe (510), a speed-changing driven gear (540) is disposed at one end of the exhaust shaft (520), the speed-changing transmission shaft (550) is rotatably connected to the side of the feed inlet (130), a speed-changing large gear (560) meshing with the speed-changing driven gear (540) is disposed on the speed-changing transmission shaft (550), a speed-changing small gear (570) is disposed on the speed-changing transmission shaft (550), and a speed-changing driving gear (580) meshing with the speed-changing small gear (570) is disposed at the rear end of the roller shaft of the crushing roller (410).

5. The temperature control structure of an injection molding machine according to claim 4, characterized in that: A net bag (600) is provided at the end of the exhaust pipe (510), and the net bag (600) is fastened to the outer wall of the end of the exhaust pipe (510).

6. The temperature control structure of an injection molding machine according to claim 1, characterized in that: The electric heating coil rod (310) and the outer spiral rod (340) have the same spiral direction; when the transmission shaft (350) rotates, the electric heating coil rod (310) and the outer spiral rod (340) rotate in opposite directions.

7. The temperature control structure of an injection molding machine according to claim 1, characterized in that: A collar is provided at the centre of the top of the inner cavity of the hopper (120), and the inner gear ring (330) is rotatably connected inside the collar via a bearing.

8. The temperature control structure of an injection molding machine according to claim 1, characterized in that: The side wall of the hopper (120) is provided with a transparent window, and the transparent window is an explosion-proof window.

9. The temperature control structure of an injection molding machine according to claim 1, characterized in that: The outer spiral rod (340) is in contact with the inner wall of the hopper (120).

10. The temperature control structure of an injection molding machine according to claim 1, characterized in that: The hopper (120) has a hollow inner wall, and an auxiliary heating rod is arranged in the hollow part.

Images