CN210705728U - Injection molding machine auxiliary device capable of stably injecting higher-quality plastic finished products - Google Patents

Abstract

The utility model relates to a technical field of injection molding machine especially relates to a can stably mould plastics out off-the-shelf injection molding machine auxiliary device of higher quality plastics, and it includes the organism, be provided with the hopper that is used for loading thermoplastic on the organism, hopper bottom intercommunication has the pipe chute that is predetermined angle with the hopper, the bottom of pipe chute is linked together with the internal storage pipe of organism, detachable the gas blow pipe of installing on the lateral wall that the pipe chute is close to the hopper, the gas blow port of gas blow pipe is in the pipe chute, the induction port of gas blow pipe is connected on the gas vent of electronic air pump, electronic air pump electric connection has control assembly, control assembly is used for driving electronic air pump intermittent type nature start so that the gas blow pipe is periodic to blowing in the pipe chute. The utility model has the advantages of that the plastic is evenly filled on the material storage tube, thereby ensuring that the dosage is kept stable when the plastic is injected, and improving the quality of the injected plastic finished product.

Description

Injection molding machine auxiliary device capable of stably injecting higher-quality plastic finished products

Technical Field

The utility model relates to an injection molding machine technical field especially relates to a can stably mould plastics out off-the-shelf injection molding machine auxiliary device of higher quality plastics.

Background

At present, an injection molding machine, also known as an injection molding machine or an injection molding machine, is a main molding device for making thermoplastic or thermosetting plastics into plastic products with various shapes by using a plastic molding mold. The injection molding machine can heat plastic, apply high pressure to the molten plastic, and inject the plastic to fill the mold cavity. The horizontal injection molding machine comprises a machine table, an injection unit, a mold clamping assembly and other structures, wherein as shown in figure 1, an injection device is parallel to the ground, an injection hole of a material storage pipe 14 faces downwards horizontally and is pressed against a pouring gate of the mold clamping assembly, and an injection screw 16 is coaxially arranged in the material storage pipe 14 in a penetrating manner.

When the injection device is vertical to the ground, the injection hole of the material storage pipe 14 faces downwards and is pressed against the pouring gate of the mold clamping assembly, and the injection screw 16 coaxially penetrates through the material storage pipe 14. When the thermoplastic plastic is injection molded, the injection unit 15 is pulled by the hydraulic cylinder to make the nozzle at the front end of the material storage pipe 14 tightly contact with the pouring gate of the mold clamping assembly, and the injection screw 16 is rotated by the hydraulic motor to make the plastic entering the material storage pipe 14 from the hopper 11 mix and melt and push downward. After the injection screw 16 retreats upward by a certain distance by means of the reaction force, the other group of hydraulic cylinders generates strong pressure to push the injection screw 16 downward to extrude the plastic in the material storage pipe 14, and the plastic in the material storage pipe 14 is injected into the mold of the clamping module at high speed, and the product is molded after the thermoplastic material is cooled and solidified.

In the existing plastic injection molding process, plastic in the hopper 11 automatically enters the material storage pipe 14 downwards under the action of gravity, and then is pushed into a mold by an injection screw 16 in the material storage pipe 14.

The above prior art solutions have the following drawbacks: the plastic in the hopper may not be uniformly filled in the storage tube due to the bridging phenomenon, and for this reason, the plastic in the storage tube may have a non-uniform density during the storage process, so that the injection dosage is unstable, and the injection of high-precision plastic products is impossible.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can stably mould plastics out finished product injection molding machine auxiliary device of higher quality plastics, the dose when solving and spouting is unstable, and can't spout the plastics finished product problem of higher quality.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides a can mould plastics out off-the-shelf injection molding machine auxiliary device of higher quality plastics steadily, includes the organism, be provided with the hopper that is used for loading thermoplastic on the organism, hopper bottom intercommunication has the pipe chute that is predetermined angle with the hopper, the bottom of pipe chute is linked together with the internal storage pipe of organism, detachable the gas blow pipe of installing on the lateral wall that the pipe chute is close to the hopper, the gas blow mouth of gas blow pipe is in the pipe chute, the induction port of gas blow pipe is connected on the gas vent of electronic air pump, electronic air pump electric connection has control assembly, control assembly is used for driving electronic air pump intermittent type nature to start so that the gas blow pipe is periodic to blowing in the pipe chute.

Adopt above-mentioned technical scheme, pour into in the hopper when plastic granules to when receiving gravity to flow in the storage material pipe through the pipe chute, utilize control assembly control electric air pump intermittent type nature start, and then make the gas blow pipe periodic blow to the plastics in the pipe chute, and then utilize the air current to blow the plastic granules that the cluster is gathered together, to this, just can effectively reduce the phenomenon of bridging and take place, thereby during enabling the even inflow storage material pipe of plastic granules, there is the uneven phenomenon of plastics density distribution in the storage material pipe under the contrast general condition, can effectively improve the precision of jet-out product, thereby improve the off-the-shelf quality of plastics.

The utility model discloses further set up to: the control assembly comprises an electromagnetic valve, a square wave generator, a control device and an execution device, wherein the electromagnetic valve, the square wave generator, the control device and the execution device are arranged on the electric air pump, the square wave generator is used for outputting periodic square wave signals, the control device is coupled to the square wave generator and responds to the square wave signals to output control signals, and the execution device is coupled to the control device and responds to the control signals to output execution signals to the electromagnetic valve and control the starting and stopping of the electromagnetic valve.

By adopting the technical scheme, when the blowing pipe needs to be started and controlled to blow the plastic periodically, the square wave generator is started, at the moment, the square wave generator periodically outputs high-low level signals, when the square wave generator outputs high-level square wave signals, the control device outputs control signals to the execution device after receiving the high-level signals, the execution device outputs execution signals to the electromagnetic valve after receiving the execution signals, at the moment, the electromagnetic valve is started, the motor air pump starts to inflate the blowing pipe when being electrified, and then the air flow blown out by the blowing pipe blows away the plastic which is easy to agglomerate in the inclined pipe, and accordingly, the bridging phenomenon can be reduced.

The utility model discloses further set up to: and the air blowing opening of the air blowing pipe is arranged in an upward inclined manner.

By adopting the technical scheme, the air blowing opening of the air blowing pipe is obliquely and upwards arranged, so that the plastic particles can be blown off by air flow in a larger area, and the plastic particles can uniformly flow into the material storage pipe.

The utility model discloses further set up to: and a limiting component for limiting the position of the air blowing pipe is arranged on the outer wall of the inclined pipe.

By adopting the technical scheme, the arranged limiting assembly is convenient for mounting and dismounting the air blowing pipe, so that the air blowing pipe is convenient to be positioned at a preset position.

The utility model discloses further set up to: the limiting assembly comprises a limiting ring matched with the air blowing pipe and a limiting hole formed in the outer wall of the inclined pipe, external threads are arranged on the outer wall of the limiting ring, and internal threads matched with the external threads are formed in the limiting hole.

Adopt above-mentioned technical scheme, when needs install the gas blow pipe on preset position for the spacing ring aligns spacing hole, inserts spacing downthehole and rotatory spacing ring with the spacing ring again, makes external screw thread connection on the internal thread, to this, just can be with the gas blow pipe stable installation on the pipe chute.

The utility model discloses further set up to: the feeding pipe is communicated with the inclined pipe at a preset angle, one inclined downward end of the feeding pipe is communicated with the material storage pipe in the machine body, a worm is coaxially arranged in the feeding pipe, one end of the worm extends to the end part, close to the material storage pipe, of the feeding pipe, and the other end of the worm is connected with a driving assembly for driving the worm to rotate in the feeding pipe.

By adopting the technical scheme, the feeding pipe is matched with the inclined pipe, so that more plastic particles can enter the feeding pipe, the worm rotates by utilizing the driving assembly, the plastic particles can be quickly pushed into the material storage pipe, and the plastic forming efficiency is effectively improved.

The utility model discloses further set up to: the driving assembly comprises a positioning block and a motor, the positioning block is arranged at the end part, far away from the material storage pipe, of the feeding pipe, the motor is arranged on the positioning block, an output shaft of the motor is connected with the worm, and the motor is used for driving the worm to rotate.

By adopting the technical scheme, when the worm needs to be driven to rotate, the motor is started, the motor output shaft drives the worm to rotate at the moment, and then the plastic in the feeding pipe is pushed to the material storage pipe by the worm, so that plastic particles can be uniformly and quickly pushed to the material storage pipe.

The utility model discloses further set up to: the control device is coupled with a driving device for intermittently starting the driving motor.

By adopting the technical scheme, when plastic particles are poured from the hopper and flow into the feeding pipe through the inclined pipe under the action of gravity, the driving device is utilized to control the motor to be intermittently started, so that the worm intermittently pushes the plastic in the feeding pipe to the material storage pipe.

To sum up, the utility model discloses a beneficial technological effect does:

1. the air pump is used for intermittently inflating the air blowing pipe, so that air flow blown by the air blowing pipe can disperse plastic particles agglomerated together in the inclined pipe, and accordingly, the bridging phenomenon of the plastic particles can be effectively reduced, the plastic particles can uniformly flow into the material storage pipe, and the plastic is uniformly mixed during material storage, so that the precision of an ejected product is improved;

2. when plastic particles are poured into the hopper and flow into the feeding pipe through the inclined pipe under the action of gravity, the driving device is used for controlling the motor to be intermittently started, so that the worm intermittently pushes the plastic in the feeding pipe to the material storage pipe.

Drawings

FIG. 1 is a partial sectional view of a machine body and an air blowing pipe in embodiment 1 of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

fig. 3 is a schematic circuit diagram of a square wave generator and a control device in embodiment 1 of the present invention.

Reference numerals: 1. a body; 11. a hopper; 12. an inclined tube; 13. a feed pipe; 131. a communication port; 14. a material storage pipe; 15. an injection unit; 16. ejecting the screw; 2. an air blowing pipe; 3. a control component; 31. a square wave generator; 32. a control device; 33. an execution device; 4. a limiting component; 41. a limiting ring; 42. a limiting hole; 5. a worm; 6. a drive assembly; 61. positioning blocks; 62. a motor; 7. a drive device; 8. an electric air pump; 81. an electromagnetic valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

An auxiliary device of an injection molding machine capable of stably injecting higher-quality plastic finished products is disclosed, as shown in fig. 1 and fig. 2, and comprises a plastic injection molding machine for injecting plastic products, in this embodiment, referred to as a machine body 1 for short, a hopper 11 for storing thermoplastic plastic particles is mounted on the machine body 1, the hopper 11 is opened upwards, an inclined tube 12 with a downward inclined bottom end is communicated with the bottom end of the hopper 11, and the axis of the inclined tube 12 forms a predetermined angle with the axis of the hopper 11 and is communicated with a material storage tube 14 in the machine body 1. When thermoplastic is poured into hopper 11, the thermoplastic flows through hopper 11, out chute 12 and into storage tube 14.

In order to reduce the bridging phenomenon, the outer wall of the inclined tube 12 is detachably provided with the air blowing tube 2 through the limiting component 4, and a control unit 3 (shown in fig. 3) for intermittently blowing air from the blowpipe 2, an air outlet end of the blowpipe 2 is inserted into the inclined tube 12, and the air blowing opening of the air blowing pipe 2 is obliquely upward and is positioned at the communication opening 131 of the inclined pipe 12 and the hopper 11, in this embodiment, the limiting component 4 includes a limiting ring 41 and a limiting hole 42, the limiting ring 41 is annularly disposed on the outer wall of the blowing tube 2, the limiting ring 41 is a circular ring block with a hollow inner portion, the inner diameter of the limiting ring 41 is slightly smaller than the diameter of the blowing tube 2, for this reason, the blowing tube 2 is conveniently clamped in the limiting ring 41, the outer wall of the limiting ring 41 is provided with external threads, the limiting hole 42 is matched with the limiting ring 41 and is arranged on the inner wall of the inclined tube 12, and the side wall of the limiting hole 42 is provided with internal threads matched with the external threads in a threaded mode.

When the blowing pipe 2 needs to be installed, the blowing pipe 2 is firstly clamped in the limiting ring 41, then the blowing end of the blowing pipe 2 is inserted into a preset position in the inclined pipe 12 through a hole formed in the inclined pipe 12, finally the limiting ring 41 is aligned with the limiting hole 42, and the limiting ring 41 is in threaded connection with the limiting hole 42 so that the blowing pipe 2 is stabilized on the inclined pipe 12.

As shown in fig. 1 and fig. 3, the control assembly 3 includes an electric air pump 8 in a power-on state, an electromagnetic valve 81 for controlling the start and stop of the electric air pump 8, a square wave generator 31, a control device 32, and an execution device 33, wherein an air outlet of the electric air pump 8 is communicated with an air inlet of the air blowing pipe 2, the square wave generator 31 is used for outputting a periodic square wave signal, the control device 32 is coupled to the square wave generator 31 and outputs a control signal in response to the square wave signal, and the execution device 33 is coupled to the control device 32 and outputs an execution signal to the electromagnetic valve 81 in response to the control signal and controls the start and stop.

Specifically, the control device 32 includes a switch element, a relay coil KM1 in the relay, and a power source VCC, in this embodiment, the switch element is an NPN-type transistor Q1, a base of the transistor Q1 is coupled to the output end of the square wave generator 31, an emitter is grounded, a collector of the transistor Q1 is coupled to the relay coil KM1, and the other end of the relay coil KM1 is coupled to the power source VCC. In addition, the relay comprises a relay coil KM1, a normally open contact switch KM1-1 and a normally open contact switch KM 1-2.

The actuating device 33 comprises a solenoid valve 81, a normally open contact switch KM1-1 and a power supply, wherein the motor 62 is connected in series with the normally open contact switch KM1-1, the other end of the normally open contact switch KM1-1 is coupled to the power supply, and the other end of the power supply is coupled to the solenoid valve 81.

In order to further enable the plastic to uniformly flow into the storage pipe 14 in the machine body 1, a feeding pipe 13 is communicated with the bottom end of the inclined pipe 12, and the axis of the feeding pipe 13 and the axis of the inclined pipe 12 form a preset included angle. In this embodiment, the feeding pipe 13 is a circular pipe, the front end of the feeding pipe 13 is connected to the rear end position of the storage pipe 14 downward at an inclined angle, the feeding pipe 13 and the storage pipe 14 are communicated with each other, a worm 5 is coaxially arranged in the feeding pipe 13 with the feeding pipe 13, the front end of the worm 5 extends to the position of a communication port 131 where the storage pipe 14 and the feeding pipe 13 intersect, and a driving assembly 6 for driving the worm 5 to rotate so that the worm 5 pushes the plastic in the feeding pipe 13 into the storage pipe 14 is installed at the tail end of the feeding pipe 13.

The driving assembly 6 comprises a positioning block 61 and a motor 62, the positioning block 61 is sealed at the rear end of the feeding pipe 13, the positioning block 61 is a square block, the side length is slightly larger than the diameter of the feeding pipe 13, the motor 62 is installed on the positioning block 61, and an output shaft of the motor 62 penetrates through the positioning block 61 to be connected with the worm 5 in the feeding pipe 13.

In order to make the worm 5 intermittently propel the plastic, a driving device 7 for intermittently starting the driving motor 62 is coupled to the control device 32, the driving device 7 is responsive to the control signal and outputs a driving signal to the motor 62 to control the motor 62 to intermittently start, specifically, the driving device 7 comprises a normally open contact switch KM1-2, the motor 62 and a power source, the normally open contact switch KM1-2 is connected in series with the motor 62, the other end of the normally open contact switch KM1-2 is coupled to the power source, and the other end of the power source is coupled to the motor 62.

The implementation principle is as follows: thermoplastic plastics can flow into the feeding pipe 13 through the hopper 11 and the inclined pipe 12 due to gravity, in the material storage process, the square wave generator 31 is opened, the square wave signal is periodically output by the square wave generator 31, when the triode Q1 receives a high level signal, the triode Q1 is conducted, the relay coil KM1 is electrified, the normally open contact switch KM1-1 and the normally open contact switch KM1-2 are closed, the electromagnetic valve 81 is conducted with a loop where the motor 62 is located, the electromagnetic valve 81 is started, the electric air pump 8 starts to inflate the air blowing pipe 2, and the air blowing pipe 2 starts to blow the plastics in the inclined pipe 12, so that the bridging phenomenon is reduced.

Meanwhile, after the motor 62 is started, the output shaft of the motor 62 drives the worm 5 to rotate, and when the worm 5 rotates, the feeding pipe 13 is uniformly filled with the plastic, and the plastic is pushed into the material storage pipe 14 to be melted and injected.

When the square wave generator 31 outputs a low level, the triode Q1 is not conducted, so that the electromagnetic valve 81 and the motor 62 are indirectly not operated until a next high level signal comes, the electromagnetic valve 81 and the motor 62 can work again, the air blowing pipe 2 can intermittently blow air towards a preset position, and the motor 62 intermittently drives the worm 5 to rotate, so that the plastic can be uniformly filled in the feeding pipe 13, and the plastic can be ensured to uniformly enter the storage pipe 14, and the injection quality of plastic products is improved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. An injection molding machine auxiliary device capable of stably injecting higher-quality plastic finished products comprises a machine body (1), the machine body (1) is provided with a hopper (11) for loading thermoplastic plastics, it is characterized in that the bottom end of the hopper (11) is communicated with an inclined pipe (12) which forms a preset angle with the hopper (11), the bottom end of the inclined tube (12) is communicated with a material storage tube (14) in the machine body (1), the side wall of the inclined pipe (12) close to the hopper (11) is detachably provided with an air blowing pipe (2), the air blowing opening of the air blowing pipe (2) is positioned in the inclined pipe (12), the air suction opening of the air blowing pipe (2) is connected with the air outlet of the electric air pump (8), the electric air pump (8) is electrically connected with the control assembly (3), and the control assembly (3) is used for driving the electric air pump (8) to intermittently start so as to enable the air blowing pipe (2) to periodically blow air into the inclined pipe (12).

2. The auxiliary device of an injection molding machine capable of stably injecting higher-quality plastic products is characterized in that the control assembly (3) comprises a solenoid valve (81) on the electric air pump (8), a square wave generator (31), a control device (32) and an execution device (33), wherein the square wave generator (31) is used for outputting periodic square wave signals, the control device (32) is coupled to the square wave generator (31) and responds to the square wave signals to output control signals, and the execution device (33) is coupled to the control device (32) and responds to the control signals to output execution signals to the solenoid valve (81) and control the start and stop of the solenoid valve (81).

3. The auxiliary device of the injection molding machine capable of stably injecting the higher-quality finished plastic products according to claim 1, wherein the blowing opening of the blowing pipe (2) is arranged obliquely upward.

4. The auxiliary device of the injection molding machine capable of stably injecting the higher-quality plastic finished products is characterized in that the outer wall of the inclined tube (12) is provided with a limiting component (4) for limiting the position of the air blowing tube (2).

5. The auxiliary device of the injection molding machine capable of stably injecting the higher-quality plastic finished products is characterized in that the limiting component (4) comprises a limiting ring (41) matched with the air blowing pipe (2) and a limiting hole (42) formed in the outer wall of the inclined pipe (12), wherein an external thread is arranged on the outer wall of the limiting ring (41), and an internal thread matched with the external thread is formed in the limiting hole (42).

6. The auxiliary device of the injection molding machine capable of stably injecting the higher-quality finished plastic products is characterized in that a feeding pipe (13) forming a predetermined angle with the inclined pipe (12) is communicated with the inclined pipe (12), one inclined downward end of the feeding pipe (13) is communicated with a material storage pipe (14) in the machine body (1), a worm (5) is coaxially arranged in the feeding pipe (13), one end of the worm (5) extends to the end part, close to the material storage pipe (14), of the feeding pipe (13), and the other end of the worm is connected with a driving assembly (6) for driving the worm (5) to rotate in the feeding pipe (13).

7. The auxiliary device of the injection molding machine capable of stably injecting the higher-quality finished plastic products is characterized in that the driving assembly (6) comprises a positioning block (61) and a motor (62), the positioning block (61) is arranged at the end of the feeding pipe (13) far away from the material storage pipe (14), the motor (62) is arranged on the positioning block (61), the output shaft of the motor (62) is connected with the worm (5), and the motor (62) is used for driving the worm (5) to rotate.

8. An auxiliary device for an injection molding machine capable of stably injecting higher quality finished plastic products as claimed in claim 2, wherein a driving device (7) for intermittently starting the driving motor (62) is coupled to said control device (32).

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