Feeding structure of injection molding machine

Abstract

The utility model provides an injection molding machine feeding structure which comprises a feeding hopper, an opening is formed in the upper portion of the feeding hopper, one side of the bottom of the feeding hopper is connected to a collecting box through a collecting pipe, the other side of the bottom of the feeding hopper is connected to a storage chamber through a discharging opening, and a second motor is arranged in the center of the lower end face of the bottom of the feeding hopper. The lower half part of the feeding hopper is provided with a dust removal assembly; the storage chamber is connected with the feeding hopper through a discharging port, a circle of heating plates are arranged on the inner wall of the storage chamber, a first motor is arranged on the top of the storage chamber, and a stirring plate is connected to the lower portion of the first motor and used for scraping residual colloidal plastic on the inner wall of the storage chamber. According to the utility model, the dust removal assembly is arranged at the bottom of the feed hopper, so that dust on the surfaces of plastic particles can be effectively removed, the dust is prevented from entering an injection molding machine to influence the appearance and performance of products, and defects can be reduced by removing the dust on the surfaces of the plastic particles, thereby improving the quality of final products.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding machine technical field, concretely is a kind of injection molding machine feed structure. BACKGROUND

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment for making various shape plastic products by thermoplastic or thermosetting plastic using plastic molding die. Through heating plastic, high pressure is applied to molten plastic to make it fill the mold cavity. After cooling and solidification, the required plastic part is obtained. The plastic raw material has some dust during transportation, which affects the quality of the product.

[0003] In order to solve the above-mentioned problem of affecting the quality of the product, through retrieval, it is found that the application number CN202223464626.7 discloses an injection molding machine feed mechanism, which includes a machine body, a feed frame fixedly connected to one side of the machine body, a connecting frame fixedly connected to one side inside the feed frame, a drive motor fixedly connected to one side of the upper end of the connecting frame, a stirring rod fixedly connected to the output end of the drive motor, a flow divider uniformly arranged at the bottom side of the connecting frame inside the feed frame, a first annular frame fixedly connected to one side of the feed frame, a heater fixedly connected inside the first annular frame, a rotating disc fixedly connected to the upper side of the stirring rod, a first groove formed in one side of the rotating disc, and a fixed disc fixedly connected to the bottom end of the feed frame, wherein a second groove is formed in the fixed disc.

[0004] However, the above-mentioned injection molding machine simultaneously removes dust and heats plastic particles during use. The molten plastic particles are prone to adhere, and the dust is not separated and still exists in the feed hopper, which makes the dust removal effect not obvious. In addition, the heating is not sufficient through the two annular frames. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide an injection molding machine feed structure to solve the problems raised in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] An injection molding machine feed structure includes:

[0008] A feed hopper has an opening at the top, and the bottom is fixedly connected to the top of the injection molding machine through a support. One side of the bottom of the feed hopper is connected to a collection tank through a collection pipe, and the other side is connected to a storage chamber through a discharge port. The bottom end surface center of the feed hopper has a second motor, which extends into the interior of the feed hopper through a rotating shaft. A plurality of curved plates are fixedly connected to the rotating shaft. The lower half of the feed hopper has a dust removal assembly for removing dust from the surface of plastic particles.

[0009] The storage chamber is connected with the feeding hopper through a discharge port, the inner wall of the storage chamber is provided with a ring of heating plates, the top is provided with a first motor, the lower portion of the first motor is connected with a stirring plate, a plurality of flow plates are mounted on one side of the stirring plate, and one scraping plate is arranged on the other side of the stirring plate and used for scraping the residual plastic glue on the inner wall of the storage chamber.

[0010] Preferably, the dust removal assembly comprises a dust removal chamber, the inner wall of the dust removal chamber is provided with a plurality of dust removal holes, one side of the bottom of the dust removal chamber is provided with a discharge port, and the dust removal chamber is internally provided with a spiral blade penetrating through the vertical space of the dust removal chamber.

[0011] Preferably, the spiral blade is fixedly connected to a central spiral blade shaft, the spiral blade shaft is fixedly connected to a rotating shaft penetrating through the bottom of the dust removal chamber, the bottom of the rotating shaft is provided with a bending plate, and the diameter of the spiral blade is slightly smaller than the diameter of the inner wall of the dust removal chamber.

[0012] Preferably, the dust removal assembly comprises a sieve plate, the sieve plate is fixedly arranged on the inner wall of the lower end of the feeding hopper, a plurality of sieve holes are uniformly arranged on the sieve plate, the upper portion of the sieve plate is provided with a bending plate, the bending plate is fixedly connected to the rotating shaft, the space above the sieve plate is provided with a dredging plate, and two dust removal fans obliquely arranged opposite to the sieve plate are arranged above the dredging plate.

[0013] Preferably, one side of the dredging plate is provided with an extended protrusion, the extended protrusion penetrates through the inner wall of the lower end of the feeding hopper and extends to the outside of the feeding hopper, a dredging motor fixedly arranged on the outside of the feeding hopper is rotationally connected to the protrusion of the dredging plate through a lead screw, the bottom end surface of the dredging plate is provided with a plurality of dredging needles corresponding to the sieve holes of the sieve plate in position, and the vertical length of the dredging needles is greater than the vertical length of the sieve holes and the bending plate.

[0014] Preferably, the dust removal fans are obliquely fixed on the inner wall of the lower end of the feeding hopper, the air outlets of the dust removal fans are aligned with the sieve plate, and the rear ends are provided with air inlets.

[0015] Preferably, the space below the sieve plate and the inner wall of the feeding hopper are provided with a collecting fan on one side, and the air outlet of the collecting fan is aligned with a collecting pipe on the other side.

[0016] Preferably, the top of the storage chamber is provided with two c-shaped stirring plates below the first motor, and the stirring plates are provided with spaces for mounting scraping plates on the heating plates and the bottom.

[0017] Compared with the prior art, the dust removal assembly can effectively remove the dust on the surface of the plastic particles, prevent the dust from entering the injection molding machine and affecting the appearance and performance of the product, remove the dust on the surface of the plastic particles, reduce the generation of defects, and improve the quality of the final product.

[0018] The dust removal assembly can effectively remove the dust on the surface of the plastic particles, prevent the dust from entering the injection molding machine and affecting the appearance and performance of the product, remove the dust on the surface of the plastic particles, reduce the generation of defects, and improve the quality of the final product.

[0019] The utility model discloses, in the storage chamber sets up the stirring board and the heating plate, through the stirring, preheats and melts to the plastic, to reach the temperature and the viscosity close to suitable injection molding, thereby reduce the melting time and the consumption of injection cylinder, and the full stirring can promote the viscosity, improve the quality of injection moulded product. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole structure schematic diagram of the utility model;

[0021] Figure 2 It is the feed hopper front view of the utility model;

[0022] Figure 3 It is the dust chamber front view of the utility model;

[0023] Figure 4 It is the dust chamber three-dimensional schematic diagram of the utility model;

[0024] Figure 5 It is the feed hopper another structure front view of the utility model;

[0025] Figure 6 It is the dust removal structure three-dimensional schematic diagram of the feed hopper of the utility model;

[0026] Figure 7 It is the schematic diagram of A in the figure of the utility model;

[0027] Figure 8 It is the dredging board motor schematic diagram of the utility model;

[0028] Figure 9 It is the dredging board plan view of the utility model;

[0029] Figure 10 It is the storage chamber front view of the utility model;

[0030] Figure 11 It is the stirring board three-dimensional schematic diagram of the utility model;

[0031] Figure 12 It is another view schematic diagram of the stirring board of the utility model.

[0032] In the figure: 1-injection molding machine; 2-injection cylinder; 3-cylinder; 4-feed hopper; 5-storage chamber; 501-heating plate; 6-collection tank; 601-collection pipe; 7-dust removal assembly; 8-discharge port; 9-first motor; 901-stirring plate; 902-scraping plate; 903-flow block; 10-second motor; 1001-rotating shaft; 11-dust removal chamber; 1101-dust removal hole; 1102-spiral blade; 1103-spiral blade shaft; 1104-bent plate; 12-dust removal fan; 1201-air inlet; 13-sieve plate; 1301-sieve hole; 14-unclogging plate; 1401-unclogging needle; 1402-unclogging motor; 1403-screw rod; 15-collection fan. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] Embodiment 1:

[0035] Please refer to Figures 1 to 4 The present application provides a technical solution:

[0036] The feed structure of the injection molding machine comprises:

[0037] The feed hopper has an opening at the top, is fixedly connected to the top of the injection molding machine through a support at the bottom, is connected to the collection tank through a collection pipe at one side of the bottom of the feed hopper, and is connected to the storage chamber through a discharge port at the other side. A second motor is arranged at the center of the lower end surface of the bottom of the feed hopper, extends into the interior of the feed hopper through a rotating shaft, and a plurality of bent plates are fixedly connected to the rotating shaft. The lower half of the feed hopper is provided with a dust removal assembly for removing dust from the surface of the plastic particles.

[0038] In this embodiment, the front end of the injection molding machine is provided with an injection cylinder, the rear end of the injection cylinder is connected with a cylinder, the injection cylinder is pushed by the cylinder to perform injection molding, and the top feed hopper is used to supplement raw materials.

[0039] The plastic particles are put into the feed hopper from the top. Since the surface of the plastic particles is inevitably contaminated with dust during transportation, the dust will form defects such as black spots and bubbles on the plastic products, affecting the appearance and performance of the products. By removing the dust from the surface of the plastic particles, the generation of these defects can be reduced, thereby improving the quality of the final product.

[0040] The dust chamber is directly arranged below the feeding hopper, and the plastic particles in the feeding hopper all fall into the dust chamber. Since the spiral blade is arranged in the dust chamber and the distance between the spiral blade and the inner wall of the dust chamber is insufficient for the plastic particles to pass through, the plastic particles move downwards along the arc of the spiral blade. Meanwhile, the spiral blade rotates under the driving of the second motor, and the plastic particles move towards the inner wall under the influence of the centrifugal force. The plastic particles continuously rub against the inner wall of the dust chamber and the spiral blade under the action of the centrifugal force while moving downwards, so that the dust on the surface of the plastic particles is removed. The dust falls into the bottom of the feeding hopper through the dust outlet during the dust removal process.

[0041] The dust falls out of the dust outlet and accumulates at the bottom of the feeding hopper. Since the curved plate is further connected to the rotating shaft, the convex side of the curved plate continuously sweeps the dust. Meanwhile, the dust moves along the convex direction of the curved plate under the influence of the centrifugal force, and finally gradually moves towards the outer side and is swept into the collecting pipe and finally falls into the collecting box.

[0042] Specifically, the dust removal assembly comprises a dust chamber, the inner wall of the dust chamber is provided with a plurality of dust outlets, one side of the bottom of the dust chamber is provided with a discharge port, and the dust chamber is internally provided with a spiral blade penetrating through the vertical space of the dust chamber. The surfaces of the dust chamber and the spiral blade are uneven, so as to increase the friction coefficient with the plastic particles.

[0043] Specifically, the spiral blade is fixedly connected to a central spiral blade shaft, the spiral blade shaft penetrates through the bottom of the dust chamber and is fixedly connected to the rotating shaft, the bottom of the rotating shaft is provided with a curved plate, and the diameter of the spiral blade is slightly smaller than the diameter of the inner wall of the dust chamber.

[0044] Embodiment 2:

[0045] Please refer to Figures 5 to 9 The utility model provides a technical scheme, which is basically the same as embodiment 1, and the difference is slight.

[0046] The dust removal assembly comprises a sieve plate, the sieve plate is fixed to the inner wall of the lower end of the feeding hopper, the sieve plate is provided with a plurality of uniformly distributed sieve holes, the upper side of the sieve plate is provided with a curved plate, the curved plate is fixedly connected to the rotating shaft, the space above the sieve plate is provided with a dredging plate, and the upper side of the dredging plate is provided with two dust removal fans which are obliquely opposite to the sieve plate.

[0047] In this embodiment, the plastic particles fall onto the sieve plate from the upper side of the feeding hopper. The sieve plate is provided with a central opening for the rotating shaft to pass through. The convex side of the curved plate connected to the rotating shaft is driven to rotate along with the motor under the falling plastic particles. Since the surface of the sieve plate is uneven, the plastic particles can sieve the dust on the surface of the sieve plate. The dust removal fans can further remove the dust on the surface and blow the dust into the sieve holes. Under the action of the centrifugal force, the plastic particles gradually move towards the outer side and finally fall into the discharge port.

[0048] The diameter of the screen hole is much smaller than the size of the plastic particles, so the plastic particles cannot fall through the screen hole.

[0049] In order to prevent the screen hole from being blocked, a dredging plate can be installed above the screen plate. The dredging plate is grid-shaped, and the plastic particles can fall through the grid. The dredging plate has a plurality of dredging needles corresponding to the screen holes. The length of the dredging needle is sufficient to pass through the curved plate to the other side of the screen hole.

[0050] When the injection molding machine has been running for a period of time, or when the operator observes that the screen plate is blocked, the dredging motor can be started to drive the dredging plate downward, and the dredging needle can be used to clean the screen plate.

[0051] Specifically, one side of the dredging plate has an extended protrusion extending through the inner wall of the lower end of the feeding hopper to the outside of the feeding hopper. The dredging motor fixed on the outside of the feeding hopper is connected with the protrusion of the dredging plate through a lead screw. The bottom end surface of the dredging plate has a plurality of dredging needles corresponding to the screen holes of the screen plate. The vertical length of the dredging needle is greater than the vertical length of the screen hole and the curved plate. In order to prevent the dredging needle from being damaged, the dredging needle can be made of elastic material and will be bent when it touches the curved plate.

[0052] Specifically, the dust removal fan is fixed obliquely on the inner wall of the lower end of the feeding hopper. The air outlet of the dust removal fan is aligned with the screen plate, and the rear end is provided with an air inlet.

[0053] Specifically, the space below the screen plate and the inner wall of the feeding hopper has a collection fan. The air outlet of the collection fan is aligned with the collection pipe on the other side.

[0054] Embodiment 3:

[0055] Please refer to Figures 10 to 12 The utility model provides a technical scheme, which comprises:

[0056] The feeding hopper and dust removal structure of embodiments 1 and 2;

[0057] The storage chamber is connected with the feeding hopper through the discharge port. The inner wall of the storage chamber is provided with a ring-shaped heating plate. The top of the storage chamber is provided with a first motor. The lower portion of the first motor is connected with a stirring plate. The stirring plate is provided with a plurality of flow plates on one side. The other side is provided with a scraper for scraping the residual plastic in the inner wall of the storage chamber.

[0058] In this embodiment, the injection molding machine completely heats the plastic particles in the injection cylinder. Since the injection is intermittent, the plastic is preheated and melted in the storage chamber in advance through stirring to achieve a temperature and viscosity close to the suitable injection molding temperature, thereby reducing the melting time and consumption of the injection cylinder. Sufficient stirring can improve the viscosity and improve the quality of the injection molded product.

[0059] The plastic particles enter the storage chamber, the inner wall of the storage chamber is provided with a heating plate to melt the plastic particles, meanwhile, a stirring plate continuously stirs, one side of the stirring plate is provided with a flow plate, the flow plate makes the plastic particles flow through the gap to improve the uniformity of stirring, and the material is better fused, meanwhile, the other side of the stirring plate is provided with a scraper to scrape the adhesive plastic glue on the inner wall of the heating plate, uniform and sufficient stirring can effectively prevent the phenomenon of excessive shearing heat of the plastic in the processing process, so that the material is degraded, thereby improving the production efficiency and improving the product quality.

[0060] Specifically, the top of the storage chamber is provided with two c-shaped stirring plates below the first motor, and the stirring plates are provided with space for installing scrapers on the heating plate and the bottom.

[0061] The rest of the parts not described in the utility model can be the same as the prior art, or be known technology or be realized by using the prior art, and will not be described in detail here.

[0062] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An injection molding machine feed structure, characterized by, The utility model relates to a plastic particle dust removal device for injection molding machine, including: The upper portion of feeding hopper (4) has opening, bottom is fixedly connected in the upper portion of injection molding machine (1) through support, one side of the bottom of feeding hopper (4) is connected to collection tank (6) through collecting pipe (601), the other side is connected to storage chamber (5) through discharge port (8), the bottom lower end surface center of feeding hopper (4) has second motor (10), second motor (10) extends into the inside of feeding hopper (4) through rotating shaft (1001), a plurality of curved plates (1104) are fixedly connected on rotating shaft (1001), the lower half of feeding hopper (4) has dust removal subassembly (7) that removes the dust on the surface of plastic particle; Storage chamber (5) is connected with feeding hopper (4) through discharge port (8), the inner wall of storage chamber (5) has a circle heating plate (501), and the top has first motor (9), and the lower side of first motor (9) is connected with stirring plate (901), and one side of stirring plate (901) is provided with a plurality of flow plates, and the other side has a scraper (902) for scraping the residual plastic in the inner wall of storage chamber (5).

2. An injection molding machine feed structure as defined in claim 1, wherein: The dust removal subassembly (7) includes a dust removal chamber (11) with a plurality of dust outlet holes (1101) on the inner wall, a discharge port (8) on one side of the bottom, and a spiral blade (1102) inside the dust removal chamber (11) that penetrates the vertical space of the dust removal chamber (11).

3. A feed structure for an injection molding machine as defined in claim 2, wherein: The spiral blade (1102) is fixedly connected to a central spiral blade shaft (1103) that passes through the bottom of the dust removal chamber (11) and is fixedly connected to the rotating shaft (1001). The bottom of the rotating shaft (1001) has a curved plate (1104). The diameter of the spiral blade (1102) is smaller than the inner diameter of the dust removal chamber (11).

4. An injection molding machine feed structure as described in claim 1 wherein: The dust removal subassembly (7) includes a sieve plate (13) fixed to the inner wall of the lower end of the feeding hopper (4). The sieve plate (13) has a plurality of uniformly distributed sieve holes (1301) on it. Above the sieve plate (13) is a curved plate (1104) fixedly connected to the rotating shaft (1001). The space above the sieve plate (13) has a dredging plate (14). Above the dredging plate (14) are two dust removal fans (12) inclined to the sieve plate (13).

5. An injection molding machine feed structure as defined in claim 4, wherein: One side of the dredging plate (14) has an extended protrusion that extends through the inner wall of the lower end of the feeding hopper (4) to the outside of the feeding hopper (4). A dredging motor (1402) fixed to the outside of the feeding hopper (4) is connected to the protrusion of the dredging plate (14) through a lead screw (1403). The bottom of the dredging plate (14) has a plurality of dredging needles (1401) corresponding to the sieve holes (1301) of the sieve plate (13). The vertical length of the dredging needles (1401) is greater than the vertical length of the sieve holes (1301) and the curved plate (1104) combined.

6. An injection molding machine feed structure as described in claim 4 wherein: The dust removal fans (12) are inclined to the inner wall of the lower end of the feeding hopper (4). The air outlets of the dust removal fans (12) are aligned with the sieve plate (13). The rear end has an air inlet (1201).

7. An injection molding machine feed structure as described in claim 4 wherein: The lower space of the sieve plate (13) has a collection fan (15) on one side of the inner wall of the feed hopper (4), and the air outlet of the collection fan (15) is aligned with the collection pipe (601) on the other side.

8. An injection molding machine feed structure as described in claim 1 wherein: The top of the storage chamber (5) has two c-shaped stirring plates (901) below the first motor (9), and the stirring plates (901) are provided with space for installing the scraper (902) on the heating plate (501) and the bottom.

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