Polyurethane forming mechanism

Abstract

The utility model discloses a polyurethane forming mechanism. Comprising a conveying frame in butt joint with a vulcanizing machine body, a turnover ejection mechanism, a front end ejection mechanism, an in-out template, a first driving oil cylinder and a bottom die, wherein the turnover ejection mechanism and the front end ejection mechanism are erected on the two sides of the conveying frame; the in-out template is arranged on the conveying frame in a sliding manner; the first driving oil cylinder is used for driving the in-out template to move back and forth on the conveying frame; the middle mold is placed on the bottom mold, the upper mold is arranged on the upward-lifting mold plate and covers the middle mold, the overturning ejection mechanism is used for ejecting the upward-lifting mold plate conveyed to a first ejection position to a feeding position, rotating the upward-lifting mold plate by 180 degrees, then adding a polyurethane raw material, and rotating, resetting and descending the upward-lifting mold plate to the first ejection position after the polyurethane raw material is solidified; and the front-end ejection mechanism is used for ejecting the middle mold conveyed to the second ejection position so as to conveniently clean the bottom mold. The device is high in automation degree, and the upper mold, the middle mold and the bottom mold can be conveniently assembled to enter equipment for pressurization and vulcanization.

Description

Technical Field

[0001] This utility model relates to the technical field of molding equipment, and in particular to a polyurethane molding mechanism. Background Technology

[0002] Polyurethane is lightweight, wear-resistant, corrosion-resistant, and has good elasticity. Usually, polyurethane is in a liquid state before molding, so the mold core needs to be flipped upwards to add polyurethane raw materials. It needs to wait for a period of time to form a semi-solid state before the mold is closed. Utility Model Content

[0003] This invention addresses the shortcomings of existing technologies by providing a polyurethane molding mechanism. A flipping ejection mechanism ejects the upper mold platen, which has been conveyed to the first ejection position, to the feeding position. After rotating 180 degrees, polyurethane raw material is added to the upper mold. Once the polyurethane raw material solidifies, it rotates back to the first ejection position. A front ejection mechanism ejects the middle mold, which has been conveyed to the second ejection position, to facilitate cleaning of the bottom mold. A first drive cylinder then pulls the middle and bottom molds back to the first ejection position to join the upper mold. This mechanism features a high degree of automation and allows for easy assembly of the upper, middle, and bottom molds into the equipment for pressure vulcanization, thus greatly facilitating production and use.

[0004] To solve the above-mentioned technical problems, the present invention adopts a polyurethane molding mechanism, comprising: a conveyor frame connected to the main body of the vulcanizing machine, a flipping ejection mechanism and a front ejection mechanism mounted on both sides of the conveyor frame, an inlet / outlet template slidably mounted on the conveyor frame, a first driving cylinder for driving the inlet / outlet template to reciprocate on the conveyor frame, a bottom mold mounted on the inlet / outlet template, a middle mold placed on the bottom mold, and an upper mold mounted on the upper lifting template and covering the middle mold. The flipping ejection mechanism is used to eject the upper lifting template, which is conveyed to the first ejection position, to the feeding position, rotate it 180 degrees, add polyurethane raw material, and after the polyurethane raw material solidifies, rotate it back to the first ejection position. The front ejection mechanism is used to eject the middle mold, which is conveyed to the second ejection position, to facilitate cleaning of the bottom mold.

[0005] In a preferred embodiment of the present invention, the flipping and ejecting mechanism includes a first ejecting bracket disposed below the conveyor frame, a first ejecting cylinder disposed on the first ejecting bracket, a first lifting rod disposed on both sides of the first ejecting bracket, a first lifting plate disposed at the top of the first lifting rod, and a flipping mechanism disposed on the first lifting plate for driving the upper lifting template to rotate.

[0006] In a preferred embodiment of the present invention, two first guide rods are also provided on the first ejector bracket.

[0007] In a preferred embodiment of the present invention, the flipping mechanism includes a rotary cylinder disposed on a first lifting plate, a rack disposed on the output end of the rotary cylinder, and a rotating shaft with one end meshing with the rack. A limiting groove is provided on the first lifting plate, and a rotating limiting block is disposed in the limiting groove. The other end of the rotating shaft passes through a bearing seat and is connected to one end of the rotating limiting block. The other end of the rotating limiting block is connected to the upper lifting template.

[0008] In a preferred embodiment of the present invention, the upper lifting template has outwardly extending positioning posts on both sides, and the positioning posts are engaged within the rotating limiting block.

[0009] In a preferred embodiment of the present invention, a snap-fit ​​notch is provided in the rotating limiting block, and elastic snap-fit ​​blocks are symmetrically arranged in the snap-fit ​​notch.

[0010] In a preferred embodiment of this utility model, the elastic block is a rubber block or a silicone block.

[0011] In a preferred embodiment of this utility model, several limiting plates are provided at intervals on both sides of the conveyor frame.

[0012] In a preferred embodiment of the present invention, the front ejection mechanism includes a second ejection bracket disposed below the conveyor frame, a second ejection cylinder disposed on the second ejection bracket, a second lifting rod disposed on both sides of the second ejection bracket, and a second lifting plate disposed at the top of the second lifting rod.

[0013] In a preferred embodiment of the present invention, two second guide rods are further provided on the second ejector bracket.

[0014] The beneficial effects of this utility model are as follows: The polyurethane molding mechanism of this utility model has a flipping ejection mechanism used to eject the upper mold plate that has been conveyed to the first ejection position to the feeding position, rotate it 180 degrees, and then add polyurethane raw material into the upper mold. After the polyurethane raw material solidifies, it rotates back to the first ejection position. The front ejection mechanism is used to eject the middle mold that has been conveyed to the second ejection position to facilitate cleaning of the bottom mold. Then, the first drive cylinder pulls back the middle mold and the bottom mold to the first ejection position to close the mold with the upper mold. The system has a high degree of automation and can easily close the upper mold, middle mold and bottom mold and put them into the equipment for pressure vulcanization, thus bringing great convenience to production and use. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0016] Figure 1 This is a schematic diagram of the overall polyurethane molding mechanism of this utility model;

[0017] Figure 2 This is a schematic diagram of the flipping and ejecting mechanism in the polyurethane molding mechanism of this utility model;

[0018] Figure 3 This is a top view of the flipping mechanism in the polyurethane molding mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the front ejection mechanism in the polyurethane molding mechanism of this utility model. Detailed Implementation

[0020] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Please see Figure 1-4 This utility model discloses a polyurethane molding mechanism, comprising: a conveyor frame 2 connected to the vulcanizing machine body 1; a flipping ejection mechanism 3 and a front ejection mechanism 4 sequentially mounted on both sides of the conveyor frame; an inlet / outlet template 5 slidably mounted on the conveyor frame; a first drive cylinder 6 for driving the inlet / outlet template to reciprocate on the conveyor frame; a bottom mold mounted on the inlet / outlet template; a middle mold placed on the bottom mold; and an upper mold mounted on the upper lifting template and covering the middle mold. The flipping ejection mechanism is used to eject the upper lifting template, which is conveyed to the first ejection position, to the feeding position, rotate it 180 degrees, and then add polyurethane raw material into the upper mold. After a period of time, the polyurethane raw material solidifies, and then the upper lifting template is driven to rotate and reset and descend to the first ejection position. The front ejection mechanism is used to eject the middle mold, which is conveyed to the second ejection position, to facilitate manual cleaning of the bottom mold. After cleaning, the first drive cylinder pulls back the middle mold and the bottom mold to the first ejection position to close the mold with the upper mold. The closed mold, the middle mold, and the bottom mold can be easily pulled back into the equipment for pressure vulcanization, bringing great convenience to production and use.

[0022] Specifically, the flipping ejection mechanism includes a first ejection bracket 301 disposed below the conveyor frame, a first ejection cylinder 302 disposed on the first ejection bracket, a first lifting rod 303 disposed on both sides of the first ejection bracket, a first lifting plate 304 disposed at the top of the first lifting rod, and a flipping mechanism disposed on the first lifting plate for driving the upper lifting template to rotate. In addition, two first guide rods 305 are also disposed on the first ejection bracket to provide guidance for the lifting operation of the first ejection cylinder.

[0023] Specifically, the flipping mechanism includes a rotary cylinder 306 mounted on the first lifting plate, a rack 307 mounted on the output end of the rotary cylinder, and a rotating shaft 308 with one end meshing with the rack. A limiting groove 309 is provided on the first lifting plate, and a rotating limiting block 310 is provided within the limiting groove. The other end of the rotating shaft passes through a bearing seat 311 and connects to one end of the rotating limiting block. The other end of the rotating limiting block is connected to the upper lifting template. The upper lifting template has outwardly extending positioning posts 312 on both sides. A snap-fit ​​notch is provided within the rotating limiting block. Elastic locking blocks 313 are symmetrically arranged inside the notch. The positioning pin is engaged in the two sets of elastic locking blocks. In this utility model, the elastic locking blocks are like rubber blocks or silicone blocks. The mold is divided into three layers. The inlet and outlet template is located below the first lifting plate. When the first driving cylinder pushes the bottom mold, middle mold and upper mold to the first ejection position, the flipping ejection mechanism ejects the upper lifting template to the feeding position, rotates it 180 degrees, and adds polyurethane raw material into the upper mold. After the polyurethane raw material solidifies, the flipping mechanism drives the upper lifting mold to rotate and reset. Then the first ejection cylinder drives the entire upper lifting mold to descend to the first ejection position.

[0024] Specifically, several limiting plates 7 are spaced apart on both sides of the conveyor frame to limit the horizontal movement of the template.

[0025] Specifically, the front ejection mechanism includes a second ejection bracket 41 located below the conveyor frame, a second ejection cylinder 42 located on the second ejection bracket, second lifting rods 43 located on both sides of the second ejection bracket, and a second lifting plate 44 located at the top of the second lifting rods. The second ejection bracket is also provided with two second guide rods 45. The front ejection mechanism is used to eject the middle mold that has been conveyed to the second ejection position to facilitate cleaning of the bottom mold. After that, the first drive cylinder pulls back the middle mold and the bottom mold to the first ejection position to close the mold with the upper mold.

[0026] The beneficial effects of this utility model are as follows: The flipping ejection mechanism is used to eject the upper lifting template conveyed to the first ejection position to the feeding position, rotate it 180 degrees, and then add polyurethane raw material into the upper mold. After the polyurethane raw material solidifies, it rotates back to the first ejection position. The front ejection mechanism is used to eject the middle mold conveyed to the second ejection position to facilitate cleaning of the bottom mold. Then, the first drive cylinder pulls back the middle mold and the bottom mold to the first ejection position to close the mold with the upper mold. The automation level is high, and the upper mold, middle mold and bottom mold can be easily closed and put into the equipment for pressure vulcanization, thus bringing great convenience to production and use.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A polyurethane molding mechanism, characterized in that, include: The vulcanizing machine includes a conveyor frame connected to the main body, a flipping ejection mechanism and a front ejection mechanism mounted on both sides of the conveyor frame, an inlet / outlet template slidably mounted on the conveyor frame, a first drive cylinder for driving the inlet / outlet template to reciprocate on the conveyor frame, a bottom mold mounted on the inlet / outlet template, a middle mold placed on the bottom mold, and an upper mold mounted on the upper lifting template and covering the middle mold. The flipping ejection mechanism is used to eject the upper lifting template, which is conveyed to the first ejection position, to the feeding position, rotate it 180 degrees, add polyurethane raw material, and after the polyurethane raw material solidifies, rotate it back to the first ejection position. The front ejection mechanism is used to eject the middle mold, which is conveyed to the second ejection position, to facilitate cleaning of the bottom mold.

2. The polyurethane molding mechanism according to claim 1, characterized in that, The flipping and ejecting mechanism includes a first ejecting bracket disposed below the conveyor frame, a first ejecting cylinder disposed on the first ejecting bracket, a first lifting rod disposed on both sides of the first ejecting bracket, a first lifting plate disposed at the top of the first lifting rod, and a flipping mechanism disposed on the first lifting plate for driving the upper lifting template to rotate.

3. The polyurethane molding mechanism according to claim 2, characterized in that, The first ejector bracket is also equipped with two first guide rods.

4. A polyurethane molding mechanism according to claim 2, characterized in that, The flipping mechanism includes a rotary cylinder mounted on a first lifting plate, a rack mounted on the output end of the rotary cylinder, and a rotating shaft with one end meshing with the rack. A limit groove is provided on the first lifting plate, and a rotating limit block is provided in the limit groove. The other end of the rotating shaft passes through a bearing seat and is connected to one end of the rotating limit block. The other end of the rotating limit block is connected to the upper lifting template.

5. A polyurethane molding mechanism according to claim 4, characterized in that, The upper lifting template has outwardly extending positioning posts on both sides, and the positioning posts are engaged in the rotation limiting block.

6. A polyurethane molding mechanism according to claim 5, characterized in that, The rotating limiting block has a snap-fit ​​notch, and elastic snap-fit ​​blocks are symmetrically arranged in the snap-fit ​​notch.

7. A polyurethane molding mechanism according to claim 6, characterized in that, The elastic clip is a rubber or silicone block.

8. A polyurethane molding mechanism according to claim 1, characterized in that, Several limiting plates are spaced apart on both sides of the conveyor frame.

9. A polyurethane molding mechanism according to claim 1, characterized in that, The front ejection mechanism includes a second ejection bracket disposed below the conveyor frame, a second ejection cylinder disposed on the second ejection bracket, second lifting rods disposed on both sides of the second ejection bracket, and a second lifting plate disposed at the top of the second lifting rods.

10. A polyurethane molding mechanism according to claim 9, characterized in that, The second ejector bracket is also equipped with two second guide rods.

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