Polyurethane flexible foam injection molding equipment

Abstract

The utility model discloses polyurethane flexible foam injection molding equipment, and aims to solve the problems that if a large quantity of materials are poured in a hopper in the process of adding the materials in the hopper, reverse buckling compaction is formed in the hopper, so that the blanking is not smooth and even the materials are blocked in the working process. According to the technical scheme, the polyurethane flexible foam injection molding equipment is characterized by comprising an injection molding machine body and a feeding device, the feeding device comprises a hopper, the hopper comprises a conical hopper body and a hopper neck connected with a lower end opening of the hopper body, a mounting frame is arranged outside the hopper body, and a mounting base is arranged on the mounting frame; and a first movable rod penetrates through the mounting seat in a sliding manner. According to the polyurethane flexible foam injection molding equipment disclosed by the utility model, jacking force is periodically applied to the first movable rod through the arranged jacking mechanism, and the first movable rod drives the second movable rod to repeatedly slide up and down in combination with the springback effect of the elastic piece, so that a shaking effect is generated in the hopper; and the blockage phenomenon caused by tight extrusion of the materials is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding equipment technical field more specifically, it relates to a kind of polyurethane soft bubble injection molding equipment. BACKGROUND

[0002] Soft polyurethane foam, referred to as polyurethane soft bubble, is a kind of soft polyurethane foam with certain elasticity, and it is the largest polyurethane product. The product mainly includes high resilience foam (HRF), block sponge, slow rebound foam, self-skin foam (ISF) and semi-rigid energy-absorbing foam.

[0003] The polyurethane soft bubble is molded by injection molding. The thermoplastic or thermosetting plastic is heated, and then high pressure is applied to the molten plastic to form various shaped plastic products in the molding mold.

[0004] If the amount of material in the hopper is too large during the adding process, a reverse compaction will be formed inside the hopper, that is, when waiting to transport the raw materials to the material pipe, the internal stationary material is pressed tightly under the action of gravity, resulting in a situation that the discharging is not smooth or even blocked during work. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a polyurethane soft bubble injection molding equipment. The top pushing mechanism is periodically arranged to apply a top pushing force to the first movable rod, and the elastic member is combined to rebound, so that the first movable rod drives the second movable rod to repeatedly slide up and down, thereby generating a shaking effect inside the hopper, promoting the dispersion of the material, avoiding the blocking phenomenon caused by the tight pressing of the material, and further improving the injection molding efficiency.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a polyurethane soft bubble injection molding equipment, comprising an injection molding machine main body and a feeding device, the feeding device comprises a hopper, the hopper comprises a conical hopper body and a hopper neck connected to the lower port of the hopper body, an installation rack is arranged outside the hopper body, a mounting seat is arranged on the installation rack, a first movable rod is slidably arranged on the mounting seat, the lower end of the first movable rod extends into the hopper body and is fixedly sleeved with a first connecting frame, a plurality of second movable rods are arranged in an annular array on the outer side of the first movable rod, a fixed block is fixedly sleeved on the first movable rod, an elastic member is fixedly abutted between the fixed block and the mounting seat, a top pushing mechanism is arranged on the installation rack, the top pushing mechanism is used to repeatedly push the upper end of the first movable rod, and the lower end of the first movable rod extends into the hopper neck.

[0007] The utility model further sets up: the push mechanism includes motor, the output shaft of motor is fixedly connected with second connecting frame, the annular array is provided with a plurality of protrusions on second connecting frame, a plurality of protrusions are arc structure, a plurality of protrusions and the upper end of first movable rod intermittent contact.

[0008] The utility model further sets up: the first movable rod is provided with two bulk material plates symmetrically, two bulk material plates all are inclined and located in the neck of hopper.

[0009] The utility model further sets up: the top of hopper is provided with the surrounding baffle, and the mounting frame is located in the surrounding baffle, so that the surrounding baffle surrounds the mounting seat, first movable rod and push mechanism.

[0010] The utility model further sets up: the mounting frame is L type structure as a whole, and one end of mounting frame is fixedly connected on injection molding machine main body.

[0011] Summarized above, the utility model has following beneficial effect:

[0012] Through the push mechanism of setting periodically to first movable rod exert push force, in combination with the rebound of elastic part, make first movable rod drive second movable rod repeatedly slide up and down, thereby produce the effect of shaking in the hopper, promote the dispersion of material, avoid the jamming phenomenon of material due to extrusion compact, and further improve injection efficiency. DRAWINGS

[0013] Figure 1 It is the overall structure schematic diagram of injection molding equipment of the utility model;

[0014] Figure 2 It is the structure schematic diagram of feeding device of the utility model;

[0015] Figure 3 It is the structure schematic diagram of mounting seat, fixed block and elastic part of the utility model;

[0016] Figure 4 It is the structure schematic diagram of protrusion of the utility model.

[0017] In the drawing: 1, injection molding machine main body;2, feeding device;201, hopper;2011, hopper body;2012, hopper neck;202, mounting frame;203, mounting seat;204, first movable rod;205, second movable rod;206, fixed block;207, elastic part;208, protrusion;209, bulk material plate;210, surrounding baffle. DETAILED DESCRIPTION

[0018] In order to make the technical scheme of the present application better understood by the skilled in the art, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments, it should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0020] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeve setting / connection", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] The present application will be described in detail below with reference to the accompanying drawings.

[0022] Referring to Figures 1-4 A polyurethane soft foam injection molding equipment, comprising an injection molding machine body 1 and a feeding device 2, the injection molding machine body 1 is a mature prior art, which is not described here;

[0023] The feeding device 2 comprises a hopper 201, the hopper 201 comprises a conical hopper body 2011 and a hopper neck 2012 connected with the lower port of the hopper body 2011, the outside of the hopper body 2011 is provided with a mounting bracket 202, a mounting seat 203 is fixedly arranged on the mounting bracket 202, a first movable rod 204 is slidably arranged on the mounting seat 203, the lower end of the first movable rod 204 extends into the hopper body 2011 and is fixedly sleeved with a first connecting bracket, a plurality of second movable rods 205 are annularly arranged on the outer side of the first movable rod 204, a fixed block 206 is fixedly sleeved on the first movable rod 204, a resilient member 207 is fixedly abutted between the fixed block 206 and the mounting seat 203, the resilient member 207 is specifically a spring, a pushing mechanism is arranged on the mounting bracket 202, the pushing mechanism is used for repeatedly pushing the upper end of the first movable rod 204, the lower end of the first movable rod 204 extends into the hopper neck 2012.

[0024] The pushing mechanism comprises a motor, a second connecting frame fixedly connected to an output shaft of the motor, and a plurality of protrusions 208 fixed in an annular array on the second connecting frame. The protrusions 208 are in an arc structure and intermittently contact the upper end of the first movable rod 204.

[0025] When the motor rotates, the protrusions 208 first push the first movable rod 204 to move downward, the first movable rod 204 drives the fixed block 206 to move and further presses the elastic member 207. When the protrusions 208 are separated from the first movable rod 204, the first movable rod 204 can move upward under the rebounding action of the elastic member 207. Such a cycle is repeated, the motor rotates at high speed, and the first movable rod 204 reciprocates upward and downward at a high frequency, thereby more effectively shaking the material.

[0026] Additionally, two material spreading plates 209 are symmetrically fixed on the first movable rod 204. The two material spreading plates 209 are both inclined and located in the hopper neck 2012. When the first movable rod 204 moves upward and downward, the material spreading plates 209 also move, thereby enhancing the dispersion effect of the material and further reducing the possibility of blockage.

[0027] The top of the hopper 201 is fixedly provided with a surrounding baffle 210, and the mounting frame 202 is partially located in the surrounding baffle 210. The surrounding baffle 210 surrounds the mounting seat 203, the first movable rod 204, and the pushing mechanism. The surrounding baffle 210 effectively prevents external debris or accidental contact with the internal mechanical structure by the operator, thereby improving the safety and reliability of the equipment and making the entire injection molding equipment more neat and beautiful in appearance.

[0028] The mounting frame 202 is in an L-shaped structure. One end of the mounting frame 202 is fixedly connected to the injection molding machine body 1. The mounting frame 202 of this structure can stably support various components, thereby ensuring the stability and reliability of the components during long-term operation.

[0029] Working principle: When the injection molding machine is preparing for work, the pushing mechanism starts to act on the first movable rod 204. By periodically applying a pushing force to the first movable rod 204 and combining the rebounding action of the elastic member 207, the first movable rod 204 repeatedly slides upward and downward along the mounting seat 203 and is transmitted to the second movable rod 205 through the first connecting frame, thereby generating a shaking effect in the hopper 201, promoting the dispersion of the material. The shaking effect can make the material uniformly fall and scatter in the hopper 201, the material can more smoothly fall from the hopper neck 2012, the blockage phenomenon caused by the extrusion of the material is avoided, and the injection molding efficiency is improved.

[0030] The above merely is preferred implementation manner of the present application, the protection scope of the present application is not only limited to the above examples, and belongs to the technical scheme under the idea of the present application all belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled person in the art, under the premise of not departing from the principle of the present application, some improvements and decorations, these improvements and decorations should also be considered as the protection scope of the present application.

Claims

1. A polyurethane flexible foam injection molding apparatus comprising an injection molding machine main body (1) and a feed device (2), characterized by: The feeding device (2) comprises a hopper (201), the hopper (201) comprises a conical hopper body (2011) and a hopper neck (2012) connected with the lower port of the hopper body (2011), the outside of the hopper body (2011) is provided with a mounting frame (202), the mounting frame (202) is provided with a mounting seat (203), the first movable rod (204) is slidably arranged on the mounting seat (203), the lower end of the first movable rod (204) extends into the hopper body (2011) and is fixedly sleeved with a first connecting frame, the first connecting frame is arranged with a plurality of second movable rods (205) on the outer side of the first movable rod (204) in an annular array, the first movable rod (204) is fixedly sleeved with a fixed block (206), the fixed block (206) is fixedly abutted with an elastic piece (207) between the mounting seat (203), the mounting frame (202) is provided with a pushing mechanism, the pushing mechanism is used for repeatedly pushing the upper end of the first movable rod (204), and the lower end of the first movable rod (204) extends into the hopper neck (2012).

2. A polyurethane soft foam injection molding apparatus according to claim 1, characterized in that: The pushing mechanism comprises a motor, a second connecting frame is fixedly connected to the output shaft of the motor, a plurality of protrusions (208) are arranged in an annular array on the second connecting frame, a plurality of the protrusions (208) are in arc-shaped structure, and a plurality of the protrusions (208) intermittently abut against the upper end of the first movable rod (204).

3. The apparatus of claim 1, wherein: The first movable rod (204) is symmetrically provided with two material spreading plates (209), and the two material spreading plates (209) are both arranged in an inclined manner and located in the hopper neck (2012).

4. The apparatus of claim 1, wherein: The top of the hopper (201) is provided with a surrounding baffle (210), and the mounting frame (202) is partially located in the surrounding baffle (210), so that the surrounding baffle (210) encloses the mounting seat (203), the first movable rod (204) and the pushing mechanism.

5. A polyurethane flexible foam injection molding equipment according to claim 1, characterized in that: The mounting frame (202) is in L-shaped structure as a whole, and one end of the mounting frame (202) is fixedly connected to the injection molding machine body (1).

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