Feeding device of injection molding machine

Abstract

The utility model relates to a feeding device of an injection molding machine. The feeding device comprises a scrap iron separating mechanism, a feeding cylinder, a preheating mechanism and an intermittent discharging mechanism, the scrap iron separating mechanism comprises a separating cylinder and a magnetic conveying belt, one end of the magnetic conveying belt extends into the feeding cylinder, the other end of the magnetic conveying belt is located outside the feeding cylinder, and the end located in the feeding cylinder is lower than the end located outside the feeding cylinder; the preheating mechanism is arranged on the feeding cylinder; the intermittent discharging mechanism comprises a first baffle, a second baffle and a power assembly, the first baffle is rotationally arranged in the feeding cylinder, a first discharging opening is formed in the first baffle, the second baffle is located below the first baffle, a second discharging opening is formed in the second baffle, and the first discharging opening corresponds to the second discharging opening; the power assembly is connected with the first baffle and drives the first baffle to rotate. The utility model provides the feeding device for the injection molding machine, which is used for preheating raw materials and can reduce the viscosity of liquid raw materials and enhance the flowability, so that the molding rate of products is improved.

Description

Technical Field

[0001] The utility model relates to mold production equipment, in particular to a feeding device for an injection molding machine. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging molding, smelting, stamping and other methods. Injection molding machines are needed in the injection molding stage. Injection molding machines are the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. Injection molding machines enter the injection system through a barrel. The injection system heats and plasticizes the raw materials. In the prior art, the injection system will generate heat loss when heating the raw materials, and the heated liquid raw materials will continuously take away the heat, resulting in high viscosity and poor fluidity, which affects product molding. Utility Model Content

[0003] The main purpose of the utility model is to provide an injection molding machine feeding device for preheating raw materials, which can reduce the viscosity of liquid raw materials and enhance fluidity, thereby improving the product molding rate.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a feeding device for an injection molding machine, comprising: an iron chip separation mechanism, a feeding cylinder, a preheating mechanism and an intermittent feeding mechanism;

[0005] The iron chip separation mechanism includes a separation cylinder and a magnetic conveyor belt, one end of the magnetic conveyor belt extends into the separation cylinder, and the other end is located outside the separation cylinder, and the end located inside the separation cylinder is lower than the end located outside the separation cylinder; the separation cylinder is connected to the feed cylinder and is arranged above the feed cylinder;

[0006] The preheating mechanism is arranged on the feeding barrel;

[0007] The intermittent unloading mechanism includes a first baffle, a second baffle and a power assembly. The first baffle is rotatably arranged in the feed barrel, a first unloading port is arranged on the first baffle, the second baffle is arranged in the feed barrel, the second baffle is located below the first baffle, a second unloading port is arranged on the second baffle, and the first unloading port corresponds to the second unloading port; the power assembly is connected to the first baffle to drive the first baffle to rotate.

[0008] Further, the magnetic conveyor belt includes a support, a belt and a plurality of magnetic rollers;

[0009] The bracket penetrates through and is arranged on the separation cylinder, and one end of the bracket located inside the separation cylinder is lower than the other end located outside the separation cylinder;

[0010] A plurality of magnetic rollers are rotatably arranged on the bracket, and the belt is sleeved on the plurality of magnetic rollers.

[0011] Furthermore, the magnetic conveyor belt also includes a first scraper, which is arranged on one end of the bracket outside the feed barrel, and the first scraper is in contact with the belt.

[0012] Furthermore, the second scraper is arranged on the first baffle, and the second scraper abuts against the inner wall of the feed barrel.

[0013] Furthermore, the first baffle is disc-shaped.

[0014] Furthermore, the power assembly includes a limit tooth, a gear and a motor. There are multiple limit teeth, and the multiple limit teeth are evenly arranged on the circumference of the first baffle. The gear is rotatably arranged on the feed barrel, and the gear passes through the feed barrel and engages with the limit tooth. The output end of the motor is connected to the gear, and the motor is arranged on the feed barrel.

[0015] The beneficial effects of the utility model are:

[0016] The utility model has a simple structure, and the raw materials are preheated during the feeding stage. The first baffle and the second baffle are arranged to allow the raw materials to be fed intermittently, thereby increasing the preheating time of the raw materials, making the raw materials preheated more evenly, reducing the viscosity of the liquid raw materials and enhancing the fluidity, thereby improving the product molding rate. The arrangement of the iron chip separation mechanism can separate the iron chips mixed in the raw materials, avoid affecting the product molding rate, and increase the service life of the injection molding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0020] Description of Reference Numerals

[0021] 1. Iron chip separation mechanism; 11. Separation cylinder; 12. Magnetic conveyor belt; 121. Bracket; 122. Belt; 123. First scraper; 124. Magnetic roller; 2. Feed cylinder; 21. First part; 22. Second part; 3. Preheating mechanism; 4. Intermittent feeding mechanism; 41. First baffle; 411. First feeding port; 42. Second baffle; 421. Second feeding port; 43. Second scraper; 44. Power assembly; 441. Limiting tooth; 442. Gear; 443. Baffle; 444. Motor. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0023] like Figure 1-Figure 2 As shown, a feeding device for an injection molding machine includes an iron chip separation mechanism 1, a feeding cylinder 2, a preheating mechanism 3 and an intermittent feeding mechanism 4.

[0024] The scrap iron separation mechanism 1 comprises a separation cylinder 11 and a magnetic conveyor belt 12. The cross section of the separation cylinder 11 is square, and a through hole is arranged on one side of the separation cylinder 11. The magnetic conveyor belt 12 comprises a bracket 121, a belt 122, a first scraper 123 and a magnetic roller 124; the bracket 121 is arranged on the separation cylinder 11, and the bracket 121 is located at the through hole, one end of the bracket 121 is located inside the separation cylinder 11, and the other end is located outside the separation cylinder 11, the bracket 121 is arranged obliquely, and one end of the bracket 121 located inside the separation cylinder 11 is lower than the other end, there are multiple magnetic rollers 124, and multiple magnetic rollers 124 are rotatably arranged on the bracket 121, and the belt 122 is sleeved on the surfaces of the multiple magnetic rollers 124, and the magnetic rollers 124 drive the belt 122 to rotate, and the conveying direction of the belt 122 located above the magnetic roller 124 is from the outside of the separation cylinder 11 to the inside of the separation cylinder 11. The first scraper 123 is disposed on one end of the bracket 121 outside the separation cylinder 11, and the first scraper 123 abuts against the belt 122. In other embodiments, two or more magnetic conveyor belts 12 may be provided, and the two or more magnetic conveyor belts 12 are oppositely and staggeredly disposed on the separation cylinder 11. An iron filings collecting cylinder may also be provided below the first scraper 123 to collect fallen iron filings.

[0025] The feed barrel 2 includes a first portion 21 and a second portion 22 connected from top to bottom, and the cross-sections of the first portion 21 and the second portion 22 are both circular, and a through groove is provided on the side wall of the first portion 21. The first portion 21 is located at the bottom of the separation barrel 11 and is connected to the separation barrel 11, and the second portion 22 has a structure with a gradually decreasing cross-section from top to bottom.

[0026] The preheating mechanism 3 includes a heating wire which is spirally arranged on the outer wall surface of the first part 21 and is located at the upper part of the first part 21 .

[0027] The intermittent material discharging mechanism 4 includes a first baffle 41, a second baffle 42, a second scraper 43 and a power assembly 44. The first baffle 41 is disc-shaped, rotatably disposed in the first part 21, and the first baffle 41 and the through slot are located at the same horizontal plane, and a first material discharging port 411 is disposed on the first baffle 41; the second baffle 42 is also disc-shaped, disposed in the first part 21, and located below the first baffle 41, and a second material discharging port 421 is disposed on the second baffle 42, and the second material discharging port 421 can be communicated with the first material discharging port 411. The power assembly 44 includes a limit tooth 441, a gear 442, a baffle 443 and a motor 444; there are a plurality of limit teeth 441, and the plurality of limit teeth 441 are evenly arranged on the circumference of the first baffle 41; the gear 442 is rotatably arranged on the first part 21, and the gear 442 is meshed with the limit tooth 441 through a through groove; the motor 444 is arranged on the first part 21, and the motor 444 is connected to the gear 442; the baffle 443 is annular, and the baffle 443 is arranged in the first part 21, and the baffle 443 is located above the limit tooth 441. The second scraper 43 is connected to the first baffle 41 through a frame, and the second scraper 43 is arranged to fit the inner wall of the first part 21, and the second scraper 43 is connected to the frame, and the frame is connected to the first baffle 41. When the first baffle 41 rotates, it drives the second scraper 43 to rotate along the inner wall of the first part 21.

[0028] When the utility model is used, the magnetic conveyor belt 12 is started, and the raw materials of the injection molding machine are placed in the separation cylinder 11. The raw materials pass through the belt 122 and enter the feed cylinder 2. The iron filings in the raw materials are adsorbed on the surface of the belt 122 and are conveyed along with the belt 122. When the iron filings are conveyed to the outside of the separation cylinder 11, they are scraped off by the first scraper 123, so that the iron filings in the raw materials can be separated. After the raw materials enter the feed cylinder 2, they fall on the first baffle 41 and are in the first part 21. The electric heating wire is heated to preheat the raw materials in the feed cylinder 2. The first baffle 41 rotates. When the first discharge port 411 and the second discharge port 421 are connected, the raw materials fall through the second part 22 to complete the discharge. The setting of the first baffle 41 and the second baffle 42 can realize intermittent discharge, uniformly heat the raw materials, and improve the preheating effect. When the first baffle 41 rotates, it drives the second scraper 43 to rotate. The rotation of the second scraper 43 can scrape off the raw materials adhering to the inner wall of the first part 21.

[0029] The above description is only a preferred embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments of 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.

Claims

1. A feeding device for an injection molding machine, characterized in that: include: An iron chip separation mechanism (1), a feeding cylinder (2), a preheating mechanism (3) and an intermittent feeding mechanism (4); The iron chip separation mechanism (1) comprises a separation cylinder (11) and a magnetic conveyor belt (12); one end of the magnetic conveyor belt (12) extends into the separation cylinder (11), and the other end is located outside the separation cylinder (11); the end located inside the separation cylinder (11) is lower than the end located outside the separation cylinder (11); the separation cylinder (11) is connected to the feed cylinder (2) and is arranged above the feed cylinder (2); The preheating mechanism (3) is arranged on the feeding cylinder (2); The intermittent material discharge mechanism (4) comprises a first baffle (41), a second baffle (42) and a power assembly (44); the first baffle (41) is rotatably arranged in the feed barrel (2); a first material discharge port (411) is arranged on the first baffle (41); the second baffle (42) is arranged in the feed barrel (2); the second baffle (42) is located below the first baffle (41); a second material discharge port (421) is arranged on the second baffle (42); the first material discharge port (411) corresponds to the second material discharge port (421); and the power assembly (44) is connected to the first baffle (41) to drive the first baffle (41) to rotate.

2. A feeding device for an injection molding machine as claimed in claim 1, characterized in that: The magnetic conveyor belt (12) comprises a support (121), a belt (122) and a plurality of magnetic rollers (124); The bracket (121) penetrates through and is arranged on the separation cylinder (11); an end of the bracket (121) located inside the separation cylinder (11) is lower than an end located outside the separation cylinder (11); The plurality of magnetic rollers (124) are rotatably mounted on the bracket (121), and the belt (122) is sleeved on the plurality of magnetic rollers (124).

3. A feeding device for an injection molding machine as claimed in claim 2, characterized in that: The magnetic conveyor belt (12) further comprises a first scraper (123), the first scraper (123) being arranged on an end of the bracket (121) located outside the feed barrel (2), and the first scraper (123) being in contact with the belt (122).

4. A feeding device for an injection molding machine as claimed in claim 1, characterized in that: The second scraper (43) is arranged on the first baffle (41), and the second scraper (43) abuts against the inner wall of the feed barrel (2).

5. The feeding device for an injection molding machine according to claim 1, characterized in that: The first baffle (41) is disc-shaped.

6. A feeding device for an injection molding machine as claimed in claim 5, characterized in that: The power assembly (44) comprises a limit tooth (441), a gear (442) and a motor (444); there are a plurality of limit teeth (441), the plurality of limit teeth (441) are evenly arranged on the circumference of the first baffle (41); the gear (442) is rotatably arranged on the feed barrel (2); the gear (442) penetrates the feed barrel (2) and meshes with the limit tooth (441); the output end of the motor (444) is connected to the gear (442); and the motor (444) is arranged on the feed barrel (2).

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