Feeding structure of injection molding machine
By incorporating a dual crushing box and an electric push rod, the problem of poor material feeding in the injection molding machine's feeding structure was solved, enabling continuous material feeding and improving the production efficiency and performance of the injection molding machine.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-06
AI Technical Summary
The existing feeding structure of injection molding machines can easily lead to reduced production efficiency, under-injection and short-shot defects when the material supply to the crushing box is not smooth, thus affecting the performance.
A dual-grinding box structure was designed, with each grinding box connected to the feeding box and equipped with an electric push rod and control components to ensure continuous feeding. The grinding components include motor-driven grinding blades and scrapers, and the support components provide stable support. The push plate inside the feeding box pushes the raw materials through the electric push rod to avoid residue.
It enables continuous material feeding in injection molding machines, avoids under-injection and short-shot phenomena, improves production efficiency and the practicality of the feeding structure, and reduces raw material waste.
Smart Images

Figure CN223972026U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molding machine technology, and in particular to an injection molding machine feeding structure. Background Technology
[0002] Injection molding machines, also known as injection molding machines or injection molding machines, are the main molding equipment used to produce various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. They are classified as vertical, horizontal, and all-electric. Injection molding machines heat the plastic, apply high pressure to the molten plastic, and inject it to fill the mold cavity.
[0003] Chinese Patent No. CN215550465U discloses a high-efficiency feeding structure for an injection molding machine, including an injection molding machine body. A feed inlet is located on the top left side of the injection molding machine body. A crushing box is installed above the injection molding machine body, with a feeding port at the top. The bottom of the crushing box is funnel-shaped, and a discharge pipe is located at the bottom of the crushing box, extending into the feed inlet. A crushing mechanism extending into the crushing box is installed at the top. A screening screen is installed inside the crushing box, and a pushing mechanism is installed at the bottom center of the screening screen. The pushing mechanism includes: a mounting sleeve, an electromagnet, a permanent magnet, an elastic wire, and a push rod. The mounting sleeve is fixed to the bottom of the screening screen. An electromagnet is fixed to the top of the inside of the mounting sleeve, and a permanent magnet is installed below the electromagnet. An elastic wire connects the permanent magnet and the electromagnet. A push rod extending into the discharge pipe is installed at the bottom of the permanent magnet. This utility model facilitates the crushing and screening of raw materials, makes feeding convenient, and is less prone to clogging.
[0004] When the existing feeding structure of an injection molding machine experiences a feeding problem in the crushing box, it requires manual maintenance. During maintenance, the machine cannot be fed, which affects its production efficiency and causes defects such as under-filling and short-circuit injection. This reduces the applicability and practicality of the feeding structure. Utility Model Content
[0005] To address the problems existing in the background technology, a material feeding structure for injection molding machines is proposed.
[0006] This utility model proposes a feeding structure for an injection molding machine, including: a crushing box, a crushing component, a feeding box, and a support component;
[0007] There are two identical crushing boxes for feeding materials into continuous injection molding machines;
[0008] The grinding assembly has two parts, each connected to the grinding chamber.
[0009] The feeding box is connected to the discharge end of the two crushing boxes; the inside of the feeding box is hollow, the bottom is connected to the feeding pipe, the two sides of the inner wall of the feeding box are respectively connected to push plates, the push plates are connected to electric push rods b, the electric push rods b pass through the feeding box and are connected to the support, and the support is connected to the two sides of the outer wall of the feeding box.
[0010] The support components are connected to the outside of the crushing box and to the feeding box.
[0011] Preferably, the two crushing boxes are respectively connected to the feed inlet and the mounting frame at the top, and the mounting frame is connected to the transparent glass for passing through the raw materials inside the crushing box;
[0012] Both crushing chambers are connected to control components.
[0013] Preferably, the two control components each include a housing, with an electric push rod a hollow interior connected to it, and an opening at the bottom connecting to the outside. The drive end of the electric push rod a is connected to a support plate, the support plate is connected to a push rod, and the push rod is connected to a blocking plate, which is used to control the discharge end of the crushing box.
[0014] Preferably, each of the two crushing components includes a motor, the motor drive end of which passes through the inside of the crushing box and is connected to a shaft, the shaft is connected to a crushing rod, and the crushing rod is connected to crushing blades, for crushing injection molding raw materials.
[0015] Preferably, the crushing assembly further includes mounting rods connected to the outer sides of both ends of the shaft, with one end of each mounting rod connected to a scraper. The scraper is connected to the inner wall of the crushing chamber for scraping off the raw materials adhering to the inner wall of the crushing chamber.
[0016] Preferably, the motor is connected above the crushing box, the inside of the crushing box is connected to a partition, the partition is provided with through holes and divides the crushing box into a crushing chamber and a discharge chamber, and the control unit is connected to the discharge chamber.
[0017] Preferably, the support assembly has two parts, each including a sleeve around the crushing box. One side of the sleeve is connected to support rod a and the other side is connected to support rod b. Support rod a is connected to a support rod, which is connected to the outside of the feeding box for support.
[0018] The two sleeves have the same structure and are spliced together by support rod b. Support rod b is connected to a reinforcing seat, the reinforcing seat is connected to a reinforcing rod, and the reinforcing rod is connected to the feeding box.
[0019] Compared with the prior art, the present invention has the following beneficial technical effects:
[0020] This utility model features two crushing boxes, each with its discharge end connected to a feeding box. If one crushing box experiences a feeding problem, the other crushing box can be used to feed the material, ensuring continuous supply to the injection molding machine and preventing disruptions to its production efficiency. This also avoids defects such as under-filling and short-circuit defects, improving the applicability and practicality of the feeding structure. Push plates are connected to both sides of the inner wall of the feeding box. These push plates move via an electric push rod b, pushing any residual injection molding material in the feeding box to the feeding port for discharge, preventing material residue and further enhancing the effectiveness of the injection molding machine's feeding structure. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the material discharge component structure in this utility model;
[0023] Figure 3 This is a schematic diagram of the stirring assembly structure in this utility model;
[0024] Figure 4 This is a schematic diagram of the feeding component structure in this utility model.
[0025] Reference numerals in the attached drawings: 1. Crushing box; 101. Feed inlet; 102. Mounting frame; 103. Box body; 104. Electric push rod a; 105. Support plate; 106. Push rod; 107. Blocking plate; 2. Crushing assembly; 201. Motor; 202. Shaft; 203. Crushing rod; 204. Crushing blade; 205. Mounting rod; 206. Scraper; 207. Partition plate; 3. Feeding box; 301. Feeding pipe; 302. Push plate; 303. Electric push rod b; 304. Support; 4. Sleeve; 401. Support rod a; 402. Support rod; 403. Reinforcing seat; 404. Reinforcing rod. Detailed Implementation
[0026] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.
[0027] Example 1
[0028] like Figure 1 - Figure 4As shown, the present invention proposes a feeding structure for an injection molding machine, comprising: a crushing box 1, a crushing component 2, a feeding box 3, and a support component; two crushing boxes 1 are provided with identical structures for feeding materials into a continuous injection molding machine; two crushing components 2 are provided and respectively connected to the crushing boxes 1; the feeding box 3 is connected to the discharge ends of the two crushing boxes 1; the feeding box 3 is hollow inside, with a feeding pipe 301 connected to the bottom, push plates 302 connected to both sides of the inner wall of the feeding box 3, the push plates 302 being connected to electric push rods b303, the electric push rods b303 passing through the feeding box 3 and connecting to supports 304, and the supports 304 being connected to both sides of the outer wall of the feeding box 3; the support component is connected to the periphery of the crushing boxes 1 and to the feeding box 3. When there is residual material in the feed box 3, the electric push rod b303 is activated. The drive end of the electric push rod b303 passes through the feed box 3 and is connected to the push plate 302, so that the push plate 302 moves in the feed box 3 toward the feed pipe 301, which facilitates pushing the residual material onto the feed pipe 301, and feeding it into the injection molding machine for processing through the feed pipe 301, avoiding material waste and improving the working efficiency of the injection molding machine's feeding structure.
[0029] To further explain, the two crushing boxes 1 are respectively connected to the feed inlet 101 and the mounting frame 102 at their upper ends. The mounting frame 102 is connected to the transparent glass, which is used to pass through the raw materials inside the crushing box 1. Both crushing boxes 1 are connected to control components. The two control components each include a box body 103. The box body 103 is hollow inside and connected to an electric push rod a104. An opening is provided at the bottom to connect to the outside. The drive end of the electric push rod a104 is connected to a support plate 105. The support plate 105 is connected to a push rod 106. The push rod 106 is connected to a blocking plate 107, which is used to control the discharge end of the crushing box 1. The transparent glass allows for easy observation of the amount of raw material inside the crushing chamber 1, facilitates continuous feeding of the two crushing chambers 1, avoids obstruction of material feeding in the injection molding machine, improves the production efficiency of the injection molding machine, and enhances the use of the feeding structure. When the crushing chamber 1 is not conveying raw materials, the blocking plate 107 is connected to the inner wall of the discharge end of the crushing chamber 1 through the push rod 106, the support plate 105, and the electric push rod a104, thereby closing the discharge end, preventing raw material leakage, and facilitating the coordinated use of the components of the crushing chamber 1.
[0030] Example 2
[0031] like Figure 1 and Figure 3 As shown, the present invention proposes an injection molding machine feeding structure. Based on the above embodiments, this embodiment also details the specific components and the cooperation method of the crushing component 2 and the support component.
[0032] Further explanation: the two crushing components 2 each include a motor 201. The drive end of the motor 201 passes through the inside of the crushing box 1 and is connected to a shaft 202. The shaft 202 is connected to a crushing rod 203, and the crushing rod 203 is connected to a crushing blade 204 for crushing the injection molding raw materials. The crushing component 2 also includes mounting rods 205 connected to the outer sides of both ends of the shaft 202. One end of each mounting rod 205 is connected to a scraper 206, which is connected to the inner wall of the crushing box 1 for scraping off the raw materials adhering to the inner wall of the crushing box 1. The motor 201 is connected above the crushing box 1. The inside of the crushing box 1 is connected to a partition 207. The partition 207 has through holes and divides the crushing box 1 into a crushing chamber and a discharge chamber. The control components are connected to the discharge chamber. The material is automatically dropped into the discharge chamber after being crushed. The discharge chamber is connected to the discharge end of the crushing box 1, and the discharge end is connected to the feeding box 3. This facilitates the delivery of the injection molding material into the feeding box 3, and the material is then fed into the injection molding machine through the feeding box 3. This also facilitates the connection and cooperation of the injection molding machine's feeding structure.
[0033] To further explain, the support assembly consists of two parts, each including a sleeve 4 surrounding the crushing chamber 1. One side of each sleeve 4 is connected to a support rod a401, and the other side is connected to a support rod b. Support rod a401 connects to a support rod 402, which is attached to the outside of the feeding chamber 3 for support. The two sleeves 4 have identical structures and are joined together by support rod b. A reinforcing seat 403 connects to the outside of support rod b, and the reinforcing seat 403 connects to a reinforcing rod 404, which is attached to the feeding chamber 3. This support assembly facilitates the support of the two crushing chambers 1 and the feeding chamber 3, improving the stability and efficiency of the injection molding machine's feeding structure.
[0034] The working principle of this utility model is as follows: When the injection molding machine's feeding structure is in operation, the two crushing boxes 1 are fed with injection molding raw materials through the feeding port 101. During the material feeding process, the motor 201 is started, and the drive end of the motor 201 drives the shaft 202 to rotate. The crushing rod 203 and the mounting rod 205 around the shaft 202 rotate synchronously, causing the crushing blades 204 on the crushing rod 203 to rotate and crush the raw materials. The mounting rod 205 drives the scraper 206, which moves along the inner wall of the crushing box 1, thereby scraping off the raw materials adhering to the inner wall of the crushing box 1. The crushed raw materials are stored in the crushing box 1. The injection molding machine is connected to the feeding pipe 301, which is connected below the feeding box 3. According to the usage requirements of the crushing box 1, by activating the electric push rod a104, the electric push rod a104 drives the support plate 105 to move upward. The support plate 105 drives the push rod 106 and the blocking plate 107. The blocking plate 107 moves upward, so that the raw material flows through the gap between the blocking plate 107 and the inner wall of the crushing box 1 to the discharge end. Then, the discharge end extends and connects to the inner wall of the feeding box 3, so as to transport the raw material into the feeding box 3. The injection molding raw material is fed into the injection molding machine for processing through the feeding box 3 and the feeding pipe 301. The two crushing boxes 1 crush and transport the raw material into the feeding box 3 in the same operation, which is convenient for continuous use of the feeding box 3 to feed the injection molding machine, improves the production efficiency of the injection molding machine, and improves the use of the feeding structure of the injection molding machine.
[0035] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.
Claims
1. An injection molding machine feed structure, characterized by, The utility model relates to a kind of injection molding material pulverizing device, including: Crushing box (1);Crushing box (1) is provided with two and is set structure same, for continuous injection molding machine feed; Pulverizing assembly (2) is provided with two and is connected in crushing box (1) respectively; Feed tank (3) is connected in the discharge end of two crushing boxes (1);Feed tank (3) is hollow inside, bottom is connected feed pipe (301), the inner wall of feed tank (3) is connected push plate (302) respectively on both sides, push plate (302) is connected electric push rod b (303), electric push rod b (303) passes through feed tank (3) and is connected support (304), and support (304) is connected in the outer wall of feed tank (3) on both sides; And support assembly is connected in the periphery of crushing box (1) and is connected with feed tank (3).
2. An injection molding machine feed structure as defined in claim 1, wherein, Two crushing boxes (1) are connected inlet (101) and mounting frame (102) respectively on upper end, mounting frame (102) is connected perspective glass, for penetrating raw material in crushing box (1); Two crushing boxes (1) are connected control piece inside.
3. A material injection structure for an injection molding machine as defined in claim 2, wherein Two control pieces include box (103) respectively, box (103) is hollow inside and is connected electric push rod a (104), and lower side is provided with open communication outside, the driving end of electric push rod a (104) is connected support plate (105), support plate (105) is connected push rod (106), push rod (106) is connected stop plate (107), for the control of discharge end of crushing box (1).
4. The injection molding machine feed structure of claim 3 wherein, Two pulverizing assemblies (2) include motor (201) respectively, the driving end of motor (201) is connected shaft (202) through crushing box (1) inside, shaft (202) is connected crushing rod (203) on periphery, crushing rod (203) is connected crushing blade (204) on periphery, for the pulverization of injection molding raw material.
5. An injection molding machine feed structure as defined in claim 4, wherein, Pulverizing assembly (2) further includes mounting rod (205) connected on the outer side of both ends of shaft (202), one end of two mounting rods (205) is connected scraper (206), scraper (206) is connected in the inner wall of crushing box (1), for the scraping of raw material adhered to the inner wall of crushing box (1).
6. A material injection structure for an injection molding machine as defined in claim 5, wherein Motor (201) is connected above crushing box (1), partition (207) is connected in crushing box (1) inside, partition (207) is provided with through-hole and divides crushing box (1) into crushing chamber and discharge chamber, control piece is connected in discharge chamber.
7. A material injection structure for an injection molding machine as defined in claim 6, wherein Support assembly is provided with two and includes sleeve (4) in the periphery of crushing box (1) respectively, sleeve (4) one side is connected support rod a (401) and the other side is connected support rod b, support rod a (401) is connected support rod (402), support rod (402) is connected on the outer side of feed tank (3), for support; Two sleeve (4) structure same and are spliced through support rod b, support rod b is connected reinforcing seat (403) on periphery, reinforcing seat (403) is connected reinforcing rod (404), reinforcing rod (404) is connected in feed tank (3).
Citation Information
Patent Citations
Efficient feeding structure of injection molding machine
CN215550465U