Hopper of injection molding machine

Abstract

The utility model discloses an injection molding machine hopper and belongs to the technical field of hoppers, the injection molding machine hopper comprises a hopper main body and an injection molding nozzle fixed at the bottom end of the hopper main body, a mounting ring is fixed at the top end of the hopper main body, a feeding pipe is detachably fixed through the mounting ring, and mounting plates are fixed on two sides of the outer wall of the hopper main body. A mounting pipe is fixed to the outer wall of the hopper body and communicates with the interior of the hopper body, an air inlet mechanism is arranged at the bottom end of the mounting pipe, an electric heating plate is fixedly embedded in the side wall of a mounting plate, mounting parts are arranged on the two sides of the outer wall of a mounting ring, and telescopic grooves extending into the mounting parts are formed in the inner wall of the mounting ring. And a positioning block used for fixing the feeding pipe is elastically inserted into the telescopic groove, a screw rod is inserted into the mounting pipe in a threaded mode, and the injection molding machine hopper improves the cleaning effect of the inner wall of the hopper body.

Description

Technical Field

[0001] The utility model belongs to the technical field of hoppers, and in particular relates to a hopper for an injection molding machine. Background Art

[0002] The injection molding machine is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. The feeding mechanism of the injection molding machine is a prefabricated mechanism that injects plastic granule raw materials into the heated barrel for melting processing. The existing injection molding machine hopper structure often adopts a combination of a fixed hopper and a barrel. The hopper and the feed pipe are transported by negative pressure suction through an external vacuum pump. The fixed combination mechanism is not convenient for maintenance and replacement of the feed pipe and the section pipe end of the hopper. In addition, the molten plastic liquid in the heated barrel has low fluidity, and the plastic particles that are easily condensed into blocks block the discharge valve pipe at the bottom of the barrel.

[0003] The patent with application number 202320306783.0 discloses an injection molding machine hopper structure, including a cavity barrel, a stirring rod is fixedly arranged at the bottom of the bottom end shaft plate of the driving motor, a sticking rod is fixedly arranged at the left end of the bottom end shaft plate of the driving motor, an acrylic scraper pad is fixedly arranged on the outer side of the left end of the sticking rod, an electric heating ring is fixedly arranged on the outer side of the top end of the cavity barrel, an inclined rod is fixedly arranged on the inner side of the top end of the material tray cavity, a disc pad is fixedly arranged at the bottom end of the inclined rod, a round pad is arranged at the bottom end of the disc pad, and a damping spring is fixedly arranged between the bottom end of the disc pad and the inner side of the top end of the round pad.

[0004] The above technical solution utilizes an acrylic scraper and a stirring rod to stir and clean the plastic in the hopper, but in actual use, the stirring rod will seriously affect the flow of the plastic, and the plastic will be adsorbed on the stirring rod, affecting the normal use of the hopper, resulting in the residual plastic in the hopper being difficult to clean and solidified and adsorbed on the inner wall of the hopper. Utility Model Content

[0005] (1) Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an injection molding machine hopper, which aims to solve the technical problems in the prior art that the stirring rod will seriously affect the flow of plastic, and the plastic will be adsorbed on the stirring rod and affect the normal use of the hopper, thereby causing the residual plastic in the hopper to be difficult to clean and solidify and adsorb on the inner wall of the hopper.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides an injection molding machine hopper, which includes a hopper body and an injection molding nozzle fixed at the bottom end of the hopper body, a mounting ring is fixed at the top of the hopper body, and a feed pipe is detachably fixed through the mounting ring, and mounting plates are fixed on both sides of the outer wall of the hopper body, wherein a mounting tube is fixed on the outer wall of the hopper body, the mounting tube is communicated with the interior of the hopper body, and an air intake mechanism is arranged at the bottom end of the mounting tube, an electric heating plate is embedded and fixed on the side wall of the mounting plate, mounting parts are arranged on both sides of the outer wall of the mounting ring, and a telescopic groove extending into the mounting part is opened on the inner wall of the mounting ring, and a positioning block for fixing the feed pipe is elastically inserted in the telescopic groove.

[0009] When the injection molding machine hopper of the present technical solution is used, a mounting ring is fixed on the top of the hopper body, and a feed pipe is detachably fixed through the mounting ring. When the inner wall of the feed pipe is sticky with plastic, the positioning block is driven by the pull rod to move out from the raised portion of the outer wall of the feed pipe, and the feed pipe is removed from the mounting ring after being removed. After removal, the plastic in the feed pipe is cleaned, and after cleaning, the feed pipe is inserted into the mounting ring. The spring in the telescopic groove on the inner wall of the mounting ring pushes the positioning block to be inserted into the positioning groove, so that the feed pipe remains fixed in the mounting ring. The convenience of installation, disassembly and cleaning of the feed pipe is improved; by fixing the installation pipe on the outer wall of the hopper body and installing an air pump on the hopper body, when the inner wall of the hopper body absorbs plastic, the electric heating plate on the outer wall of the installation plate is started to heat the plastic on the inner wall of the hopper body, and after heating, the screw is loosened to make the air flow out from the inner wall of the hopper body and the injection nozzle along the through hole through the air intake pipe after the air pump is started. The airflow drives the heated and softened plastic to be discharged from the injection nozzle during the flow process, thereby improving the cleaning effect of the inner wall of the hopper body.

[0010] Preferably, the air intake mechanism comprises an air pump embedded and fixed on the outer wall of the hopper body and an air intake pipe installed on the top of the air pump, and the air intake pipe is connected to the mounting pipe.

[0011] Furthermore, a screw is threadedly inserted into the installation tube, and one end of the screw extending into the installation tube is in an arc-shaped structure and is at the same horizontal position as the inner wall of the hopper body.

[0012] Furthermore, a threaded portion is fixed to the top end of the feed pipe, and a raised portion is symmetrically fixed to the bottom end of the outer wall of the feed pipe.

[0013] Furthermore, a positioning groove is provided on the outer wall of the protruding portion, and the protruding portion is inserted and matched in the feeding pipe, and the positioning block is inserted and matched in the positioning groove.

[0014] Furthermore, a spring is embedded in the telescopic groove, a pull rod is slidably inserted into the outer wall of the mounting portion, and the pull rod passes through one end of the spring and is fixedly connected to the positioning block.

[0015] Furthermore, a sealing gasket is embedded and fixed in the top end of the hopper body, and the bottom end of the feed pipe is tightly connected to the sealing gasket.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model has a mounting ring fixed on the top of the hopper body, and a feed pipe is detachably fixed through the mounting ring. When the inner wall of the feed pipe is stuck with plastic, the positioning block is driven by the pull rod to move out from the raised portion of the outer wall of the feed pipe, and the feed pipe is removed from the mounting ring after being removed. After the removal, the plastic in the feed pipe is cleaned, and after cleaning, the feed pipe is inserted into the mounting ring. The spring in the telescopic groove on the inner wall of the mounting ring pushes the positioning block to be inserted into the positioning groove, so that the feed pipe is kept fixed in the mounting ring, thereby improving the convenience of installation, disassembly and cleaning of the feed pipe.

[0019] A mounting tube is fixed on the outer wall of a hopper body and an air pump is installed on the hopper body. When the inner wall of the hopper body absorbs plastic, the electric heating plate on the outer wall of the mounting plate is started to heat the plastic on the inner wall of the hopper body. After heating, the screw is loosened to allow the air to flow out from the inner wall of the hopper body and the injection nozzle along the through hole through the air inlet pipe after the air pump is started. The airflow drives the heated and softened plastic to be discharged from the injection nozzle during the flow, thereby improving the cleaning effect of the inner wall of the hopper body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic cross-sectional structural diagram of the hopper body of the utility model;

[0023] Figure 3 For the utility model Figure 2 A schematic diagram of the structure enlargement in the middle;

[0024] Figure 4 This is a schematic diagram of the feed pipe structure of the utility model.

[0025] The markings in the attached drawings are: 1. hopper body; 2. air pump; 3. air inlet pipe; 4. threaded part; 5. feed pipe; 6. electric heating plate; 7. mounting plate; 8. injection nozzle; 9. mounting tube; 10. screw; 11. through hole; 12. sealing gasket; 13. positioning block; 14. telescopic slot; 15. mounting ring; 16. mounting part; 17. pull rod; 18. raised part; 19. positioning slot. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] This specific embodiment is an injection molding machine hopper, and its structural schematic diagram is as follows Figure 1 and Figure 2 As shown, the injection molding machine hopper includes a hopper body 1 and an injection nozzle 8 fixed at the bottom end of the hopper body 1, a mounting ring 15 is fixed at the top of the hopper body 1, and a feed pipe 5 is detachably fixed through the mounting ring 15, and mounting plates 7 are fixed on both sides of the outer wall of the hopper body 1, wherein a mounting tube 9 is fixed on the outer wall of the hopper body 1, the mounting tube 9 is communicated with the inside of the hopper body 1, and an air intake mechanism is arranged at the bottom end of the mounting tube 9, an electric heating plate 6 is embedded and fixed on the side wall of the mounting plate 7, mounting parts 16 are arranged on both sides of the outer wall of the mounting ring 15, and a telescopic groove 14 extending into the mounting part 16 is opened on the inner wall of the mounting ring 15, and a positioning block 13 for fixing the feed pipe 5 is elastically inserted in the telescopic groove 14.

[0028] The air intake mechanism includes an air pump 2 embedded and fixed on the outer wall of the hopper body 1 and an air intake pipe 3 installed on the top of the air pump 2. The air intake pipe 3 is connected to the mounting tube 9. A screw 10 is threadedly inserted in the mounting tube 9. One end of the screw 10 extends into the mounting tube 9 and has an arc-shaped structure and is at the same horizontal position as the inner wall of the hopper body 1. A threaded portion 4 is fixed to the top of the feed pipe 5, and a protrusion 18 is symmetrically fixed to the bottom end of the outer wall of the feed pipe 5. When the inner wall of the hopper body 1 absorbs plastic, the electric heating plate 6 on the outer wall of the mounting plate 7 is started to heat the plastic on the inner wall of the hopper body 1, and the screw 10 is loosened after heating, so that after the air pump 2 is started, the air flows out from the inner wall of the hopper body 1 and the injection nozzle 8 along the through hole 11 through the air intake pipe 3. During the flow, the airflow drives the heated and softened plastic to be discharged from the injection nozzle 8.

[0029] like Figure 3 and Figure 4As shown, a positioning groove 19 is provided on the outer wall of the raised portion 18, and the raised portion 18 is fitted and inserted in the feed pipe 5, the positioning block 13 is fitted and inserted in the positioning groove 19, a spring is embedded in the telescopic groove 14, a pull rod 17 is slidably inserted in the outer wall of the mounting portion 16, the pull rod 17 passes through one end of the spring and is fixedly connected to the positioning block 13, a sealing gasket 12 is embedded and fixed at the top of the hopper body 1, and the bottom end of the feed pipe 5 is tightly connected to the sealing gasket 12, when the inner wall of the feed pipe 5 is sticky with plastic, the positioning block 13 is driven by the pull rod 17 to move out of the raised portion 18 of the outer wall of the feed pipe 5, and the feed pipe 5 is removed from the mounting ring 15 after being removed, and the plastic in the feed pipe 5 is cleaned after disassembly, and the feed pipe 5 is inserted into the mounting ring 15 after cleaning, and the spring in the telescopic groove 14 on the inner wall of the mounting ring 15 pushes the positioning block 13 to insert into the positioning groove 19, so that the feed pipe 5 remains fixed in the mounting ring 15.

[0030] The hopper body 1 of the injection molding machine hopper is shown in the cross-sectional structure diagram as follows: Figure 2 As shown, its Figure 2 The enlarged schematic diagram of the structure at A is as follows Figure 3 As shown, the schematic diagram of the structure of the feed pipe 5 is as follows Figure 4 shown.

[0031] Working principle: When the injection molding machine hopper of the present technical solution is used, when the inner wall of the feed pipe 5 is sticky with plastic, the pull rod 17 is held by hand to drive the positioning block 13 to move out from the raised portion 18 of the outer wall of the feed pipe 5, and after moving out, the feed pipe 5 is disassembled from the mounting ring 15, and the plastic in the feed pipe 5 is cleaned after disassembly, and after cleaning, the feed pipe 5 is inserted into the mounting ring 15, and the spring in the telescopic groove 14 on the inner wall of the mounting ring 15 pushes the positioning block 13 to insert into the positioning groove 19, so that the feed pipe 5 The material tube 5 remains fixed in the mounting ring 15. When the inner wall of the hopper body 1 absorbs the plastic, the electric heating plate 6 on the outer wall of the mounting plate 7 is started to heat the plastic on the inner wall of the hopper body 1. After heating, the screw 10 is loosened to allow the air pump 2 to flow out from the inner wall of the hopper body 1 and the injection nozzle 8 along the through hole 11 through the air inlet pipe 3 after starting. During the flow, the airflow drives the heated and softened plastic to be discharged from the injection nozzle 8, thereby improving the cleaning effect of the inner wall of the hopper body 1.

[0032] All technical features in this embodiment can be freely combined according to actual needs.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A hopper for an injection molding machine, comprising a hopper body (1) and an injection nozzle (8) fixed at the bottom end of the hopper body (1), characterized in that: A mounting ring (15) is fixed on the top of the hopper body (1), and a feed pipe (5) is detachably fixed via the mounting ring (15), and mounting plates (7) are fixed on both sides of the outer wall of the hopper body (1), wherein a mounting pipe (9) is fixed on the outer wall of the hopper body (1), the mounting pipe (9) is communicated with the inside of the hopper body (1), and an air intake mechanism is arranged at the bottom end of the mounting pipe (9), an electric heating plate (6) is embedded and fixed in the side wall of the mounting plate (7), mounting parts (16) are arranged on both sides of the outer wall of the mounting ring (15), and a telescopic groove (14) extending into the mounting part (16) is opened on the inner wall of the mounting ring (15), and a positioning block (13) for fixing the feed pipe (5) is elastically inserted in the telescopic groove (14).

2. An injection molding machine hopper according to claim 1, characterized in that: The air intake mechanism comprises an air pump (2) embedded and fixed on the outer wall of the hopper body (1) and an air intake pipe (3) installed on the top of the air pump (2), and the air intake pipe (3) is connected to the installation pipe (9).

3. An injection molding machine hopper according to claim 2, characterized in that: A screw rod (10) is threadedly inserted into the mounting tube (9); one end of the screw rod (10) extending into the mounting tube (9) is in an arc-shaped structure and is at the same horizontal position as the inner wall of the hopper body (1).

4. The injection molding machine hopper according to claim 1, characterized in that: A threaded portion (4) is fixed to the top end of the feed pipe (5), and a raised portion (18) is symmetrically fixed to the bottom end of the outer wall of the feed pipe (5).

5. The injection molding machine hopper according to claim 4, characterized in that: The outer wall of the protruding portion (18) is provided with a positioning groove (19), and the protruding portion (18) is inserted and matched in the feeding pipe (5), and the positioning block (13) is inserted and matched in the positioning groove (19).

6. The injection molding machine hopper according to claim 5, characterized in that: A spring is embedded in the telescopic groove (14), and a pull rod (17) is slidably inserted into the outer wall of the mounting portion (16). The pull rod (17) passes through one end of the spring and is fixedly connected to the positioning block (13).

7. The injection molding machine hopper according to claim 1, characterized in that: A sealing gasket (12) is embedded and fixed at the top end of the hopper body (1), and the bottom end of the feed pipe (5) is tightly connected to the sealing gasket (12).

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