Strip-shaped raw material feeding mechanism of rubber injection machine

Abstract

The utility model relates to the technical field of injection machines, in particular to a strip-shaped raw material feeding mechanism of a rubber injection machine, which comprises a frame, a moving plate is slidably connected in the bottom wall of the frame, first motors are symmetrically and fixedly mounted at the bottom end of the moving plate, and driven transmission wheels are symmetrically connected in the frame in a rotating manner. Main transmission wheels which are symmetrically arranged are rotationally connected to the moving plate, and an electric telescopic rod is fixedly mounted at the bottom end of the frame; the driving transmission wheel and the driven transmission wheel are each slidably connected with two limiting wheels, the limiting wheels are each fixedly connected with a mounting ring, the mounting rings are each fixedly connected with a spring, the frame is provided with a transmission mechanism, and the transmission mechanism comprises a second motor and two crimping frames; the conveying device has the advantages that the stability of the transmission wheels during conveying of strip-shaped raw materials is improved, the raw materials are effectively prevented from moving up and down in the conveying process, and therefore high efficiency and smoothness of the conveying process are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, specifically to a strip-shaped raw material feeding mechanism for a rubber injection molding machine. Background Technology

[0002] The injection system is one of the most important components of an injection molding machine. It includes a plasticizing device and a power transmission device. The plasticizing device consists of a feeding device, a barrel, a screw, and an injection nozzle. Rubber enters the injection molding machine's feeding barrel through the feeding device for heating and plasticizing. Then, under certain pressure and speed, the screw injects the molten plastic or rubber into the mold cavity. It is evident that the feeding device plays a crucial role in the injection molding machine.

[0003] Existing patent document with application number 201320329863.4 provides a strip-shaped raw material feeding mechanism for a rubber injection molding machine. The mechanism is installed on the injection molding machine, which has a feeding hole. It includes a feeding frame horizontally arranged on the injection molding machine and a set of moving wheels axially parallel to the feeding frame. The moving wheel set includes a driving wheel and a driven wheel, both located above the feeding hole. The feeding frame is equipped with a control device for controlling the rotation of the driving wheel and a counting device for monitoring the length of the strip-shaped raw material. The counting device is electrically connected to the control device. The strip-shaped raw material passes through the gap between the driving wheel and the driven wheel, and when the driving wheel rotates, it drives the strip-shaped raw material into the feeding hole. Using strip-shaped raw material results in uniform feeding with minimal error. Although the above application has many advantages, it still has the following shortcomings: the size of the transmission wheels is fixed and cannot be adjusted, while the diameter of the strip-shaped raw material varies. Therefore, during the process of conveying the raw material through the transmission wheels, the raw material may float up and down in the gap between the transmission wheels, which leads to a reduction in the conveying efficiency of the strip-shaped raw material. Utility Model Content

[0004] The purpose of this invention is to provide a strip-shaped raw material feeding mechanism for a rubber injection molding machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a strip-shaped raw material feeding mechanism for a rubber injection molding machine, comprising a frame, a movable plate slidably connected to the bottom wall of the frame, a first motor symmetrically arranged fixedly installed at the bottom end of the movable plate, a slave drive wheel symmetrically arranged rotatably connected inside the frame, a main drive wheel symmetrically arranged rotatably connected to the movable plate, and an electric telescopic rod fixedly installed at the bottom end of the frame;

[0006] Both the main drive wheel and the driven wheel are slidably connected to two limiting wheels. Each limiting wheel is fixedly connected to a mounting ring, and each mounting ring is fixedly connected to a spring. Each output shaft of the main drive wheel and the driven wheel is fixedly connected to a support ring. The frame is provided with a transmission mechanism, which includes a second motor and two pressing frames. The bottom of the output end of the second motor is fixedly connected to a bidirectional lead screw.

[0007] Preferably, the through-moving plate that rotates at the bottom of the output shaft of the main drive wheel is fixedly connected to the output end of the corresponding first motor.

[0008] Preferably, the output end of the electric telescopic rod is fixedly connected to the moving plate via a connecting block, and a limit rod is fixedly connected in the bottom wall of the frame, with one end of the limit rod sliding through the moving plate.

[0009] Preferably, one end of each spring is fixedly connected to a corresponding limiting wheel, and a guide rod is fixedly connected to the frame via a mounting block, with the bottom end of the guide rod sliding through the two pressing frames.

[0010] Preferably, the bidirectional lead screw is fixedly mounted on the frame by a mounting block, and the bidirectional lead screw is threadedly connected to two crimping brackets, each of which abuts against a corresponding mounting ring.

[0011] Compared with the prior art, the beneficial effects of this utility model are: through the coordinated work of each component, the position of the limiting wheel can be flexibly adjusted to ensure that each limiting wheel can closely fit the strip-shaped raw materials of different sizes, thereby improving the stability of the transmission wheel when conveying the strip-shaped raw materials, effectively preventing the raw materials from shifting up and down during the conveying process, thus ensuring the high efficiency and smoothness of the conveying process. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the bottom structure of the frame of this utility model;

[0014] Figure 3 This is a schematic diagram of the back structure of the frame of this utility model;

[0015] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0016] In the diagram: 1. Frame; 2. Moving plate; 3. First motor; 4. Driven wheel; 5. Main drive wheel; 6. Electric telescopic rod; 7. Limiting wheel; 8. Mounting ring; 9. Spring; 10. Transmission mechanism; 101. Second motor; 102. Pressing frame; 103. Two-way lead screw; 11. Limiting rod; 12. Guide rod; 13. Support ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 The present invention provides the following technical solution:

[0019] Example 1: A strip-shaped raw material feeding mechanism for a rubber injection molding machine includes a frame 1, a movable plate 2 slidably connected to the bottom wall of the frame 1, a first motor 3 symmetrically arranged fixedly installed at the bottom end of the movable plate 2, a symmetrically arranged slave drive wheel 4 rotatably connected inside the frame 1, a symmetrically arranged main drive wheel 5 rotatably connected to the movable plate 2, an electric telescopic rod 6 fixedly installed at the bottom end of the frame 1, the bottom end of the output shaft of the main drive wheel 5 rotatably passes through the movable plate 2 and is fixedly connected to the corresponding output end of the first motor 3, the output end of the electric telescopic rod 6 is fixedly connected to the movable plate 2 through a connecting block, and a limit rod 11 is fixedly connected to the bottom wall of the frame 1, one end of the limit rod 11 slidably passing through the movable plate 2;

[0020] In use, frame 1 can be installed at the feed inlet of the injection molding machine. The strip-shaped raw material is first processed by the machine and rolled into a roll. Then, the strip-shaped raw material is passed through the side wall of frame 1 and placed between the main drive wheel 5 and the driven wheel 4. At this time, the electric telescopic rod 6 is activated. The output end of the electric telescopic rod 6 retracts and drives the moving plate 2 to move. The movement of the moving plate 2 is guided by the limit rod 11. The movement of the moving plate 2 will drive the two main drive wheels 5 and the two first motors 3 to move together. The movement of the main drive wheels 5 will cooperate with the driven wheel 4 to squeeze and clamp the strip-shaped raw material. At this time, the two first motors 3 are activated. Both first motors 3 will drive the main drive wheels 5 to rotate. The rotation of the main drive wheels 5 will drive the strip-shaped raw material to move through friction. The driven wheel 4 will be passively rotated due to the movement of the strip-shaped raw material. Then, the strip-shaped raw material will pass through the other side wall of frame 1 and be transported into the interior of the injection molding machine, completing the raw material feeding work of the injection molding machine.

[0021] Example 2: The technical solution of this example, which differs from that of Example 1, includes: two limiting wheels 7 are slidably connected to both the main drive wheel 5 and the driven wheel 4; each limiting wheel 7 is fixedly connected to a mounting ring 8; each mounting ring 8 is fixedly connected to a spring 9; each main drive wheel 5 and the driven wheel 4 is fixedly connected to a support ring 13; a transmission mechanism 10 is provided on the frame 1; the transmission mechanism 10 includes a second motor 101 and two pressing frames 102; a bidirectional lead screw 103 is fixedly connected to the bottom of the output end of the second motor 101.

[0022] One end of each spring 9 is fixedly connected to the corresponding support ring 13. A guide rod 12 is fixedly connected to the frame 1 by a mounting block. The bottom end of the guide rod 12 slides through the two pressing brackets 102. A bidirectional screw 103 is fixedly installed on the frame 1 by a mounting block. The bidirectional screw 103 is threadedly connected to the two pressing brackets 102. Each pressing bracket 102 abuts against the corresponding mounting ring 8.

[0023] In use, the second motor 101 can be started, which will drive the bidirectional lead screw 103 to rotate. The rotation of the bidirectional lead screw 103 will drive the two pressing frames 102 to move simultaneously towards the middle of the frame 1. The movement of the pressing frames 102 is guided by the guide rod 12. The movement of the pressing frames 102 will squeeze the mounting ring 8. The mounting ring 8 will move together with the pressing frame 102 under pressure. The moving mounting ring 8 will stretch the spring 9. The movement of the mounting ring 8 will also drive the limit wheel 7 to move. Then, the limit wheel 7 can be moved simultaneously towards the middle to the designated position. At this time, the strip material is located between the main drive wheel 5 and the driven drive wheel 4, and the limit wheel 7 will hold the upper and lower ends of the strip material. At this time, the strip material cannot shift up and down between the main drive wheel 5 and the driven drive wheel 4, which improves the conveying stability of the strip material.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A strip-shaped raw material feeding mechanism for a rubber injection molding machine, comprising a frame (1), a movable plate (2) slidably connected to the bottom wall of the frame (1), a first motor (3) symmetrically arranged fixedly installed at the bottom end of the movable plate (2), a slave drive wheel (4) symmetrically arranged rotatably connected inside the frame (1), a main drive wheel (5) symmetrically arranged rotatably connected on the movable plate (2), and an electric telescopic rod (6) fixedly installed at the bottom end of the frame (1). Its features are: The main drive wheel (5) and the driven wheel (4) are each slidably connected to two limiting wheels (7). Each limiting wheel (7) is fixedly connected to an installation ring (8). Each installation ring (8) is fixedly connected to a spring (9). Each output shaft of the main drive wheel (5) and the driven wheel (4) is fixedly connected to a support ring (13). The frame (1) is provided with a transmission mechanism (10). The transmission mechanism (10) includes a second motor (101) and two pressing frames (102). The bottom of the output end of the second motor (101) is fixedly connected to a bidirectional lead screw (103).

2. The rubber injection molding machine strip raw material feeding mechanism according to claim 1, characterized in that: The bottom of the output shaft of the main drive wheel (5) is rotated through the moving plate (2) and is fixedly connected to the output end of the corresponding first motor (3).

3. The rubber injection molding machine strip raw material feeding mechanism according to claim 1, characterized in that: The output end of the electric telescopic rod (6) is fixedly connected to the moving plate (2) through a connecting block. A limiting rod (11) is fixedly connected in the bottom wall of the frame (1). One end of the limiting rod (11) slides through the moving plate (2).

4. The rubber injection molding machine strip raw material feeding mechanism according to claim 1, characterized in that: One end of each spring (9) is fixedly connected to the corresponding support ring (13). A guide rod (12) is fixedly connected to the frame (1) by a mounting block. The bottom end of the guide rod (12) slides through the two pressing frames (102).

5. The rubber injection molding machine strip raw material feeding mechanism according to claim 1, characterized in that: The bidirectional lead screw (103) is fixedly installed on the frame (1) by the mounting block. The bidirectional lead screw (103) is threadedly connected to two crimping brackets (102). Each crimping bracket (102) abuts against the corresponding mounting ring (8).

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