CN214773799U

CN214773799U - Injection molding machine

Info

Publication number: CN214773799U
Application number: CN202022895452.4U
Authority: CN
Inventors: 许国旗; 马冲; 游聚华; 罗德松; 龙腾
Original assignee: Ningbo Weili Hi Tech Machinery Co ltd
Current assignee: Ningbo Weili Hi Tech Machinery Co ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-11-19
Anticipated expiration: 2030-12-04

Abstract

The utility model discloses an injection molding machine, include: the injection molding system comprises a charging barrel, a screw rod arranged in the charging barrel and a protective cover arranged outside the charging barrel; a first temperature control assembly for controlling the internal temperature of the charging barrel is arranged in the screw rod, and a second temperature control assembly for controlling the external temperature of the charging barrel is arranged on the anti-skid cover; the power system is connected with the injection molding system and used for providing power; the power system comprises: the injection molding machine comprises a hydraulic motor, a speed reducer connected with the hydraulic motor and an injection molding oil cylinder. The utility model discloses in, when setting up first temperature control subassembly and second temperature control subassembly simultaneously, carry out temperature control to the inside and the outside of injecting glue material simultaneously for temperature control is more effective, more accurate, more rapid, and changes and maintain.

Description

Injection molding machine

Technical Field

The utility model relates to an injection moulding equipment technical field especially relates to an injection molding machine.

Background

The injection molding machine is mainly used for manufacturing plastic products with various shapes from thermoplastic plastics or thermosetting materials by using a plastic molding die.

Injection molding screws are an important part of injection molding machines. It is used for conveying, compacting, melting, stirring and pressing plastic. All this is done by rotation of the screw within the barrel. When the screw rotates, the plastic generates friction and mutual movement on the inner wall of the machine barrel, the bottom surface of the screw groove, the screw ridge propelling surface and the plastic. The forward propulsion of the plastic is the result of this combination of movements and the heat generated by the friction is also absorbed to raise the temperature of the plastic and melt it.

However, the temperature of the injection molding material in the charging barrel needs to be controlled within a reasonable range, and when the temperature in the charging barrel is too high, the molten plastic is easily degraded and decomposed, so that the defects of unstable product color, black glue on the surface, yellow glue residue and the like are caused, and the product yield is greatly reduced; when the temperature in the charging barrel is too low, the plastic particles can not be melted, so that the injection molding can not be normally carried out. Meanwhile, as the screw rotates and generates friction with the inner wall of the charging barrel, the temperature in the charging barrel can rise along with the normal working time, and the temperature can not be naturally kept constant in a reasonable range.

Meanwhile, for some heavy injection molding machines, the torque of a driving part is not enough to drive the screw to rotate, and the molten materials cannot be mixed and then extruded.

Disclosure of Invention

The above-mentioned not enough to prior art, the utility model aims to solve the technical problem that a plastic injection machine is proposed for the unable invariable problem in reasonable scope of temperature in the feed cylinder among the solution prior art.

The utility model provides a technical scheme that its technical problem adopted is an injection molding machine, include:

an injection molding system, comprising: the device comprises a charging barrel, a screw rod arranged in the charging barrel and a protective cover arranged outside a charging barrel; a first temperature control assembly for controlling the internal temperature of the charging barrel is arranged in the screw rod, and a second temperature control assembly for controlling the external temperature of the charging barrel is arranged on the protective cover;

the power system is connected with the injection molding system and used for providing power; the power system comprises: the injection molding machine comprises a hydraulic motor, a speed reducer connected with the hydraulic motor and an injection molding oil cylinder.

Preferably, the first temperature control assembly comprises a blind hole formed along the axial direction of the screw; the backflow pipe is arranged in the blind hole, the backflow pipe and the inner wall of the blind hole are provided with first cooling channels at intervals, the backflow pipe is hollow to form second cooling channels, and the first cooling channels are communicated with the second cooling channels to form a water cooling loop.

Preferably, a cooling jacket is further sleeved outside the screw, and the screw can rotate in the cooling jacket;

a first annular groove and a second annular groove are formed in the inner wall of the cooling sleeve, the first annular groove is communicated with the first cooling channel, and the second annular groove is communicated with the second cooling channel;

the cooling jacket is further provided with a water inlet and a water outlet, the water inlet is communicated with the first annular groove, and the water outlet is communicated with the second annular groove.

Preferably, the screw is provided with a first perforation and a second perforation along the radial direction thereof;

one end of the first through hole is communicated with the first cooling channel, and the other end of the first through hole is communicated with the first annular groove;

one end of the second through hole is communicated with the second cooling channel, and the other end of the second through hole is communicated with the second annular groove.

Preferably, a protective cover is arranged on the periphery of the cartridge, and the second temperature control assembly is arranged on the protective cover.

Preferably, the second temperature control assembly comprises a plurality of air cooling machines arranged axially along the protective cover.

Preferably, a plurality of air-cooling machines are uniformly arranged along the axial direction of the shield.

Preferably, one end of the protective cover, which is far away from the opening of the blind hole, is provided with at least one extending channel.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

(1) when setting up first temperature control subassembly and second temperature control subassembly simultaneously, carry out temperature control to the inside and the outside of injecting glue material simultaneously, the inside temperature of control injecting glue material only need control first temperature control subassembly can, the outside temperature of control injecting glue material only need control the second temperature control subassembly can, the inside and outside temperature of injecting glue material need not through temperature transfer process for temperature control is more effective, more accurate, more rapid, and changes and maintain.

(2) Through addding the speed reducer, enlarge and transmit hydraulic motor's moment of torsion for the screw rod, enlarged the moment of torsion under the prerequisite that need not to change hydraulic motor, compared in the hydraulic motor of direct change big moment of torsion, a large amount of costs have been practiced thrift in such structural arrangement.

(3) The water inlet is communicated with the first annular groove, the water outlet is communicated with the second annular groove, so that cooling water can directly enter the first cooling channel to be in contact with the inner wall of the blind hole for controlling the temperature, and the temperature is controlled more rapidly, effectively and accurately.

Drawings

FIG. 1 is a front view of an injection molding machine in an embodiment;

FIG. 2 is an exploded view of an injection molding system according to an embodiment;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is a sectional view of an injection molding system in an embodiment;

FIG. 5 is an enlarged view at B in FIG. 4;

in the figure:

1000. an injection molding system; 100. a screw; 110. blind holes; 120. a first cooling channel; 130. a return pipe; 131. a second cooling channel; 140. a cooling jacket; 141. a first ring groove; 421. a second ring groove; 143. A water inlet; 144. a water outlet; 150. a waterproof plug rod; 200. a charging barrel; 300. a protective cover; 310. an air cooling machine; 320. an extension channel; 410. a speed reducer; 420. a hydraulic motor; 430. and (5) an injection molding oil cylinder.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Referring to fig. 1-5, the utility model discloses an injection molding machine, including:

injection molding system 1000, comprising: a charging barrel 200, a screw 100 arranged in the charging barrel 200, and a protective cover 300 arranged outside the charging barrel; a first temperature control component for controlling the internal temperature of the charging barrel 200 is arranged in the screw 100, and a second temperature control component for controlling the external temperature of the charging barrel 200 is arranged on the protective cover 300;

a power system connected with the injection molding system 1000 for providing power; the power system comprises: a hydraulic motor 420, a speed reducer 410 connected to the hydraulic motor 420, and an injection cylinder 430.

Specifically, when only the first temperature control assembly is arranged, the internal temperature of the glue injection material can be effectively controlled, but the external temperature can reach the preset temperature when the internal temperature is required to be changed to be lower or higher; when the external temperature of the glue injection material rises, the first temperature control assembly needs to control the internal temperature of the glue injection material first, and then transmits the temperature change to the outside, so that the temperature control is not rapid and inaccurate due to the temperature transmission step, and the temperature is more difficult to maintain. Similarly, when only the second temperature control assembly is arranged, the temperature control inside the glue injection material is very slow and inaccurate, and is difficult to control and maintain.

And in this embodiment, when setting up first temperature control subassembly and second temperature control subassembly simultaneously, carry out temperature control to the inside and the outside of injecting glue material simultaneously, the inside temperature of control injecting glue material only need control first temperature control subassembly can, the outside temperature of control injecting glue material only need control second temperature control subassembly can, the inside and outside temperature of injecting glue material need not through the temperature transfer process for temperature control is more effective, more accurate, more rapid, and changes and maintain.

In the power system, the torque of the hydraulic motor 420 is expanded and transmitted to the screw 100 by additionally arranging the speed reducer 410, the torque is expanded on the premise of not replacing the hydraulic motor 420, and compared with the structure of directly replacing the hydraulic motor 420 with large torque, the structure arrangement saves a large amount of cost.

The first temperature control assembly comprises a blind hole 110 formed along the axial direction of the screw 100; the return pipe 130 is disposed in the blind hole 110, the return pipe 130 and the inner wall of the blind hole 110 have an interval to form a first cooling channel 120, the return pipe 130 is hollow to form a second cooling channel 131, and the first cooling channel 120 and the second cooling channel 131 are communicated to form a water cooling loop.

Specifically, the return pipe 130 has a gap with the inner wall of the blind hole 110, the gap is the first cooling channel 120, and the return pipe 130 is hollow, and the hollow portion is the second cooling channel 131. Because the return pipe 130 is hollow, the first cooling channel 120 and the second cooling channel 131 can be communicated at the bottom of the blind hole 110, so as to form a complete water cooling loop, and realize the temperature control of the screw 100 by using the temperature of water. That is, water (or other heat-conducting liquid) may flow out of the second cooling channel 131 after entering the first cooling channel 120 (or flow out of the first cooling channel 120 after entering the second cooling channel 131), and in the process, the temperature in the screw 100 may be increased or decreased. It is contemplated that temperature control within the screw 100 may be achieved by simply passing water at a predetermined temperature through the first cooling passage 120 or the second cooling passage 131. In combination with the technical field, the problem of over-high temperature and the like only occurs in the screw 100, and therefore, the temperature can be reduced only by introducing water with a preset temperature into the first cooling channel 120 or the second cooling channel 131.

A cooling jacket 140 is sleeved outside the screw 100, and the screw 100 can rotate in the cooling jacket 140;

a first ring groove 141 and a second ring groove 421 are formed in the inner wall of the cooling jacket 140, the first ring groove 141 is communicated with the first cooling channel 120, and the second ring groove 421 is communicated with the second cooling channel 131;

the cooling jacket 140 is further provided with a water inlet 143 and a water outlet 144, the water inlet 143 is communicated with the first ring groove 141, and the water outlet 144 is communicated with the second ring groove 421.

The screw 100 is provided with a first through hole and a second through hole along the radial direction thereof;

one end of the first through hole is communicated with the first cooling channel 120, and the other end of the first through hole is communicated with the first ring groove 141;

one end of the second through hole communicates with the second cooling channel 131, and the other end communicates with the second annular groove 421.

The working principle and the steps of the first temperature control assembly are as follows:

if the first cooling channel 120 is used as a water inlet channel and the second cooling channel 131 is used as a water outlet channel, the cooling water enters from the first ring groove 141, sequentially passes through the first through hole, the first cooling channel 120, the second cooling channel 131, and the second through hole, and then flows out from the second ring groove 421. In the process, cooling water directly enters the first cooling channel 120 to contact with the inner wall of the blind hole 110, so that rapid temperature control is realized.

If the second cooling channel 131 is used as the water inlet channel and the first cooling channel 120 is used as the water outlet channel, the cooling water enters from the second ring groove 421 and then flows out from the first ring groove 141 after passing through the second through hole, the second cooling channel 131, the first cooling channel 120 and the first through hole in sequence. In the process, the cooling water firstly needs to pass through the second cooling channel 131, namely the inside of the return pipe 130, and then pass through the first cooling channel 120 to contact with the inner wall of the blind hole 110 for temperature control; the cooling water passes through the return pipe 130, and the temperature of the cooling water is changed, so that the temperature control is not accurate enough, and the temperature control time is longer.

Therefore, in the embodiment, the water inlet 143 is communicated with the first ring groove 141, and the water outlet 144 is communicated with the second ring groove 421, so that the cooling water can directly enter the first cooling channel 120 to contact with the inner wall of the blind hole 110 for controlling the temperature, and the temperature control is faster, more effective and more accurate.

A protective cover 300 is disposed on the outer circumference of the cartridge 200, and the second temperature control assembly is disposed on the protective cover 300.

The second temperature control assembly includes a plurality of air-cooled machines 310 disposed axially along the shroud 300.

A plurality of air-cooling machines 310 are uniformly arranged along the axial direction of the shroud 300.

At least one extending channel 320 is provided at an end of the shield 300 away from the opening of the blind hole 110.

As shown in fig. 4, the blind hole 110 does not penetrate through the entire screw 100, and is affected by other devices in the injection molding machine, the air cooling machine 310 cannot cover the entire length of the charging barrel 200, so that the screw 100 has a section that cannot be covered by the first temperature control assembly, the entire charging barrel 200 is filled with the injection material, and the temperature control of the injection material cannot cover the entire length of the charging barrel 200; therefore, an extended passage is provided in such a section so that the temperature control of the air-cooling machine 310 can be effected in this section, i.e., it is achieved that the temperature control measure can cover the entire length of the cartridge 200, making the temperature control more effective.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. An injection molding machine, comprising:

2. The injection molding machine of claim 1, wherein said first temperature control assembly comprises a blind bore formed axially along said screw; the backflow pipe is arranged in the blind hole, the backflow pipe and the inner wall of the blind hole are provided with first cooling channels at intervals, the backflow pipe is hollow to form second cooling channels, and the first cooling channels are communicated with the second cooling channels to form a water cooling loop.

3. An injection molding machine as claimed in claim 2, wherein said screw is further sheathed with a cooling jacket, said screw being rotatable within said cooling jacket;

4. An injection molding machine according to claim 3, wherein said screw is provided with a first perforation and a second perforation along a radial direction thereof;

5. An injection molding machine according to claim 2, wherein a shield is provided around the cartridge, and said second temperature control assembly is provided to said shield.

6. An injection molding machine as claimed in claim 5, wherein said second temperature control assembly includes a plurality of air blowers axially disposed along the shield.

7. An injection molding machine according to claim 6, wherein a plurality of air-cooling machines are arranged uniformly in the axial direction of said shield.

8. An injection molding machine as claimed in claim 7, wherein an end of said shield remote from said opening of said blind bore is provided with at least one extension channel.