CN212603021U - Special feed arrangement of intermittent type formula ration injection molding machine - Google Patents

Abstract

The utility model discloses a special feed arrangement of intermittent type formula ration injection molding machine, including feeding case and push rod motor, the push rod motor set up in the right side of feeding case, push rod motor be connected with the control box electricity, inlet pipe and discharging pipe set up on the left side box of feeding case, the inlet pipe on install the check valve, the feeding incasement be equipped with the piston, the piston install on the telescopic link of push rod motor, the utility model overcomes the defects of prior art, the device's piston is the same at the distance that the feeding incasement removed at every turn, makes the feeding incasement extrude the incasement melten volume the same at every turn, has realized the ration feeding.

Description

Special feed arrangement of intermittent type formula ration injection molding machine

Technical Field

The utility model relates to a feed arrangement technical field specifically belongs to a special feed arrangement of intermittent type formula ration injection molding machine.

Background

Injection molding is one of the common processing modes in the production process of plastic products, and an injection molding piece has the advantages of high structural strength, simple processing process and good product consistency, so most plastic products are processed by adopting an injection molding process. The injection molding equipment is mainly an injection molding machine, and the injection molding machine has the main functions of extruding and plasticizing injection molding molten materials, then injecting the injection molding molten materials into a mold cavity, and cooling and molding the molten materials to obtain an injection molding piece. In the injection molding process, the injection molding pressure and the pressure maintaining time are key parameters influencing the quality of an injection molding part, and the injection molding pressure is mainly generated by the extrusion pressure generated by an extrusion screw of an injection molding machine, so that when the same injection molding part is injected, quantitative melting materials are injected into the injection molding machine, the injection molding pressure can be ensured to be stable during injection molding, the injection molding requirement is met, and the quality of an injection molding product is improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a special feed arrangement of intermittent type formula ration injection molding machine has overcome the not enough of prior art.

In order to solve the above problems, the utility model adopts the following technical proposal:

the utility model provides a special feed arrangement of intermittent type formula ration injection molding machine, includes feeding case and push rod motor, the push rod motor set up in the right side of feeding case, the push rod motor be connected with the control box electricity, inlet pipe and discharging pipe set up on the left side box of feeding case, the inlet pipe on install the check valve, the feeding incasement be equipped with the piston, the piston install on the telescopic link of push rod motor.

The piston comprises a first piston and a second piston, the first piston and the second piston are identical in structure, and the outer side edges of the first piston and the second piston are in contact with the inner wall of the feeding box.

The first piston and the second piston are of an integrated structure, the first piston and the second piston are not in contact with each other, and an annular groove is formed between the first piston and the second piston.

Wherein, a sealing ring is arranged in the annular groove.

Compared with the prior art, the utility model discloses an implement the effect as follows: when the device is used, the push rod motor pushes the piston to the left discharge pipe of the feeding box through the telescopic rod to extrude the molten material in the feeding box, so that the check valve seals the feeding pipe and the molten material is extruded from the discharge pipe; when the telescopic rod pulls the piston to the direction far away from the discharge pipe, negative pressure is generated in the feeding box in the moving process of the piston, so that the check valve is opened, and molten material in the hopper is sucked into the feeding box; because the distance of the piston moving in the feeding box every time is the same, the volume of the molten material extruded into the extruding box every time in the feeding box is the same, and quantitative feeding is realized.

Drawings

FIG. 1 is a schematic view of a feed box;

FIG. 2 is a schematic view of the inside of the feeding device;

FIG. 3 is a schematic structural diagram of a feeding device installed on a batch quantitative injection molding machine.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation to be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 3, the intermittent quantitative injection molding machine comprises an extrusion device, a feeding device, a hopper 9 and a control box 3, wherein the control box 3 is electrically connected with an external power supply.

As shown in fig. 1-3, the extrusion device includes an extrusion box 4 and an extrusion motor 6, the extrusion motor 6 is a servo motor, the extrusion device is provided with a feed inlet and a discharge outlet, the extrusion motor 6 is arranged on the right side of the extrusion box 4, the extrusion motor 6 is electrically connected with the control box 3, the extrusion box 4 is cylindrical, the left side of the extrusion box 4 is provided with a discharge box 41, the feed inlet is positioned on the upper part of the extrusion box 4, the discharge outlet is positioned at the left end of the discharge box 41, the discharge outlet is of a conical structure, an extrusion head is installed in the extrusion box 4, the extrusion head is installed on a rotating shaft 61 of the extrusion motor 6 through a connecting rod 62, and the connecting rod 62 is connected with the; the head of extruding includes feed portion 5 and extrusion portion 50, extrusion portion 50 installs in the center department of 5 left side terminal surfaces of feed portion, feed portion 5 and extrusion portion 51 are cylindrical, extrusion portion 50 is located ejection of compact case 41, feed portion 5 is located extrusion case 4, feed portion 5 is cylindrical, the middle part of feed portion 5 is equipped with annular mounting groove 54, annular mounting groove 54 is the toper structure, install sealing ring 7 on the annular mounting groove 54, sealing ring 7 can be sealed extrusion head and extrusion case 4 between, prevent that the melting material from producing the leakage, be equipped with feed channel 53 with feed inlet matched with on the left side feed portion 5 of annular mounting groove 54, the both ends of feed channel 53 are located on the upper surface and the left end face of feed portion 5 respectively, be equipped with spiral arris 51 on extrusion portion 50, the external diameter of extrusion portion 50 and the high sum of spiral arris 51 are less than the external diameter of feed portion.

As shown in fig. 1-3, the feeding device is installed above the extrusion device through a first mounting frame 13 and a second mounting frame 19, the feeding device comprises a feeding box 1 and a push rod motor 2, the push rod motor 2 is arranged on the right side of the feeding box 1, the push rod motor 2 is electrically connected with a control box 3, a feeding pipe 11 and a discharging pipe 12 are arranged on a left box body of the feeding box 1, a check valve 14 is installed on the feeding pipe 11, the feeding pipe 11 above the check valve 14 is connected with a hopper 9, molten material is contained in the hopper 9, a piston is arranged in the feeding box 1 and is installed on an expansion link 21 of the push rod motor 2, the piston comprises a first piston 16 and a second piston 17, the first piston 16 and the second piston 17 have the same structure, the outer side edges are both contacted with the inner wall of the feeding box 1, the first piston 16 and the second piston 17 are of an integral structure, and the first, an annular groove is formed between the first piston 16 and the second piston 17, a sealing ring 18 is installed in the annular groove, a feeding pipe 11 and a discharging pipe 12 are arranged on the feeding device, and the discharging pipe 12 is connected with the feeding hole.

When the injection molding machine is used, the control box 3 is connected with an external power supply, the push rod motor 2 and the extrusion motor 6 of the injection molding machine are supplied with power through the control box 3, and the extrusion motor 6 and the push rod motor 2 start to work. When the feed pipe 11 is just communicated with the feed channel 53, the piston is positioned at the rightmost end of the feed box 1; along with the rotation of the feeding part 5, the communication area between the feeding channel 53 and the feeding pipe 11 is gradually increased and then gradually decreased, meanwhile, the push rod motor 2 pushes the piston to the direction of the discharging pipe 12 on the left side of the feeding box 1 through the telescopic rod 21 to extrude the molten material in the feeding box 1, so that the feeding pipe 11 is sealed by the check valve 14, the feeding channel 53 on the feeding part 5 is communicated with the discharging pipe 12 at the moment, so that the molten material is extruded into the extruding box 4 on the left side of the feeding part 5, and when the communication between the feeding channel 53 and the feeding pipe 11 is just disconnected, the piston reaches the leftmost end of the feeding box 1 at the moment; then, the feeding part 5 continues to rotate, the push rod motor 2 pulls the piston from the leftmost end to the rightmost end of the feeding box 1, when the feeding pipe 11 is just communicated with the feeding channel 53, the piston reaches the rightmost end of the feeding box 1, and then the steps are continued, so that the feeding box 1 feeds the extrusion box 4 intermittently and quantitatively.

When the discharge pipe 12 and the feeding channel 53 are disconnected, the telescopic rod 21 pulls the piston to the direction away from the discharge pipe 12, and in the process of moving the piston, negative pressure is generated in the feeding box 1, so that the check valve 14 is opened, and molten material in the hopper 9 is sucked into the feeding box 1; meanwhile, in the process that the feeding part 5 continues to rotate, the extrusion part 50 plasticizes and extrudes the molten material in the discharge box 41, so that the molten material is extruded from the discharge port, after the molten material is extruded, the molten material in the discharge box 41 and the extrusion box 4 is reduced, the pressure is reduced, the extrusion part 50 cannot continue to extrude the molten material, after the feeding part 5 rotates to the discharge pipe 12 to be communicated with the feeding channel 53 again, the molten material is extruded into the extrusion box 4 from the feeding box 1 again, after the material feeding is realized, the discharge port of the device can continue to extrude, the molten material is injected into the mold, the device can realize autonomous quantitative feeding, the injection molding extrusion process is intermittent, the requirement of intermittent injection molding processing can be met, and the quality of the produced product is stable.

In this apparatus, since the distance of each movement of the piston in the feed box 1 is the same, the volume of the molten material extruded into the extrusion box 4 in each time in the feed box 1 is the same, and the quantitative feeding is realized.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides a special feed arrangement of intermittent type formula ration injection molding machine which characterized in that: including feeding case and push rod motor, the push rod motor set up in the right side of feeding case, the push rod motor be connected with the control box electricity, the left side box of feeding case on be provided with inlet pipe and discharging pipe, the inlet pipe on install the check valve, the feeding incasement be equipped with the piston, the piston install on the telescopic link of push rod motor.

2. The special feeding device for the intermittent quantitative injection molding machine as claimed in claim 1, wherein the piston comprises a first piston and a second piston, the first piston and the second piston are identical in structure, and the outer edges of the first piston and the second piston are in contact with the inner wall of the feeding box.

3. The feeding device special for the intermittent quantitative injection molding machine according to claim 2, characterized in that: the first piston and the second piston are of an integrated structure, the first piston and the second piston are not in contact with each other, and an annular groove is formed between the first piston and the second piston.

4. The feeding device special for the intermittent quantitative injection molding machine according to claim 3, characterized in that: and a sealing ring is arranged in the annular groove.

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