Foaming machine for polyurethane thermal insulation pipe production

Abstract

The utility model relates to the technical field of polyurethane thermal insulation pipe production, and discloses a foaming machine for polyurethane thermal insulation pipe production, which comprises a foaming frame, a mixing box and a plurality of foaming moulds, the mixing box is embedded above the foaming frame, the front side and the rear side of the foaming frame are not shielded, and the plurality of foaming moulds are fixedly arranged below the front side and the rear side of the foaming frame. The front side and the rear side of the mixing box are connected with draw-off pumps, the front side and the rear side of the foaming frame are provided with spraying frames in a sliding mode, the spraying frames are driven by lead screw drivers fixed to the front side of the foaming frame, the spraying frames are connected with the draw-off pumps through communicating pipes, telescopic spraying gun heads are connected to the lower portions of the spraying frames, and feeding ports matched with the telescopic spraying gun heads are formed in the foaming mold. A closed structure matched with the foaming mold is arranged in the lower end of the foaming frame. The automatic forming machine has the advantages of being capable of forming multiple products at a time, high in efficiency and automation degree and capable of reducing labor cost.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane thermal insulation pipe production, in particular to a foaming machine for polyurethane thermal insulation pipe production. Background Art

[0002] Polyurethane insulation pipe is a material used for pipe insulation, which is made of polyurethane foam plastic. This pipe is commonly used in industry, construction and pipeline transportation systems to insulate hot and cold fluids and prevent energy loss and temperature fluctuations. The main components of polyurethane insulation pipe include internal pipes, polyurethane foam layers and external protective layers. The internal pipe is used to transmit fluids, and the polyurethane foam layer surrounds the outside of the pipe to play a role in insulation and reduce the conduction of heat or cold. The external protective layer is usually made of wear-resistant, anti-corrosion or waterproof materials to protect the polyurethane foam layer from mechanical damage or environmental erosion.

[0003] Currently, when producing polyurethane foam layers, manufacturers use specialized foaming machines to mix the materials and then pump the mixture into a mold. This process requires one mold to be completed at a time and then immediately closed to wait for the foam layer to foam and set. Since this is a one-by-one or batch-by-batch process, production efficiency is relatively low and requires a lot of manpower. Utility Model Content

[0004] In order to solve the above-mentioned problems, the utility model provides a foaming machine for producing polyurethane thermal insulation pipes, which has the advantages of more products formed at one time, high efficiency, high automation and reduced labor costs.

[0005] In order to solve the above-mentioned technical problems, the technical solution proposed by the utility model is: a foaming machine for the production of polyurethane thermal insulation pipes, comprising a foaming frame, a mixing box and a foaming mold, the mixing box is embedded above the foaming frame, the front and rear sides of the foaming frame are unobstructed, a number of the foaming molds are fixedly arranged below the front and rear sides of the foaming frame, the front and rear sides of the mixing box are connected with an extraction pump, the front and rear sides of the foaming frame are slidably provided with a spray frame, the spray frame is driven by a screw drive fixed on the front side of the foaming frame, the spray frame is connected to the extraction pump through a connecting pipe, a telescopic spray gun head is connected below the spray frame, a feed port matching the telescopic spray gun head is provided on the foaming mold, and a closed structure matching the foaming mold is provided inside the lower end of the foaming frame.

[0006] Furthermore, the mixing box is connected to a stirrer, a feeding port is provided above the mixing box, and a sealing cover is provided on the feeding port.

[0007] Based on the above characteristics, the agitator can ensure that the raw materials in the mixing box are always kept in a uniformly mixed state, and the sealing cover can prevent the raw materials from being contaminated, thereby ensuring the quality of the polyurethane insulation pipe.

[0008] Furthermore, two groups of the foaming molds are provided on the front and rear sides, two extraction pumps are provided on the front and rear sides of the foaming frame, and the foaming molds in the same group are evenly spaced.

[0009] Based on the above characteristics, multiple sets of foaming molds and extraction pumps can produce more polyurethane insulation pipes at the same time with high production efficiency. The foaming molds are evenly spaced, which makes it easy to control the telescopic spray gun head to smoothly inject the raw materials into the foaming mold, which is conducive to ensuring stable production.

[0010] Furthermore, the foaming mold is composed of two semi-cylinders arranged opposite to each other, and a sealing end cover is connected to the end of the foaming mold.

[0011] Based on the above features, it is convenient to open the foaming mold to take out the materials, and the sealing end cover can ensure the sealing of the foaming mold.

[0012] Furthermore, a fixing plate matching the foaming mold is connected below the spray rack.

[0013] Based on the above characteristics, the fixed plate can stably support the spray rack, thereby ensuring smooth production.

[0014] Furthermore, the closing structure includes a closing cover, which is arranged in one-to-one correspondence with the foaming mold and is arranged near one end of the feed port, and a push rod is connected to the end of the closing cover away from the feed port, and the push rod is slidably arranged in the foaming frame, and a slide groove matching the push rod is provided on the bottom surface of the foaming frame, and push blocks are symmetrically provided on both sides of the inside of the foaming frame, and the push blocks are driven by electric push rods fixed on both sides of the foaming frame, and the two sides of the push block and the end of the push rod away from the closing cover are mutually matching inclined surfaces, and an electronic lock matching the push rod is connected on the bottom surface of the foaming frame.

[0015] Based on the above characteristics, the electric push rod pushes the push block to move, so that the closing cover can move to close the feed port of the foaming mold, thereby ensuring a good foaming production effect.

[0016] Compared with the prior art, the utility model has the following advantages: multiple groups of foaming molds and extraction pumps are convenient for producing polyurethane insulation pipes at different positions at the same time, and the product is formed in the foaming mold at one time, avoiding the loss and time waste caused by multiple processing, and has high production efficiency. The setting of automatic equipment such as extraction pumps and screw drivers can realize automatic injection of raw materials into the foaming mold in sequence, thereby improving the automation degree of the foaming machine, eliminating the need for manual operation, and saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a side view of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the closed structure part of the utility model;

[0020] Figure 4 It is an enlarged view of part A of the utility model.

[0021] As shown in the figure: 1. Foaming rack; 2. Mixing box; 3. Foaming mold; 4. Extraction pump; 5. Spray rack; 6. Screw drive; 7. Connecting pipe; 8. Telescopic spray gun head; 9. Feed inlet; 10. Agitator; 11. Sealing cover; 12. Sealing end cover; 13. Fixed plate; 14. Closing cover; 15. Push rod; 16. Push block; 17. Electric push rod; 18. Electronic lock. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] Combined with Figure 1 A foaming machine for producing polyurethane thermal insulation pipes includes a foaming frame 1, a mixing box 2 and a foaming mold 3. The mixing box 2 is embedded above the foaming frame 1. A stirrer 10 is connected to the mixing box 2. A feeding port is provided above the mixing box 2. A sealing cover 11 is provided on the feeding port. The stirrer 10 can ensure that the raw materials in the mixing box 2 are always kept in a uniformly mixed state. The sealing cover 11 can prevent the raw materials from being contaminated, thereby ensuring the quality of the polyurethane thermal insulation pipe.

[0024] Combined with Figure 1 , Attachment Figure 2 The front and rear sides of the foaming frame 1 are unobstructed, and a plurality of foaming molds 3 are fixedly arranged below the front and rear sides of the foaming frame 1. The foaming mold 3 is composed of two semi-cylinders arranged opposite to each other. The ends of the foaming mold 3 are connected with a sealing end cover 12, which is convenient for opening the foaming mold 3 to take out the material. The sealing end cover 12 can ensure the sealing of the foaming mold 3. A fixing plate 13 matching the foaming mold 3 is connected below the spray frame 5. The fixing plate 13 can stably support the spray frame 5, thereby ensuring the smooth progress of production.

[0025] Combined with Figure 1 , Attachment Figure 3 The mixing box 2 is connected with an extraction pump 4 on the front and rear sides, the foaming mold 3 is provided with two groups on the front and rear sides, and the foaming frame 1 is provided with two extraction pumps 4 on the front and rear sides. The foaming molds 3 in the same group are evenly spaced. Multiple groups of foaming molds 3 and extraction pumps 4 can produce more polyurethane insulation pipes at the same time, with high production efficiency. The foaming molds 3 are evenly spaced, which is convenient for controlling the telescopic spray gun head 8 to smoothly inject the raw materials into the foaming mold 3, which is conducive to ensuring stable production.

[0026] Combined with Figure 1 , Attachment Figure 4A spray rack 5 is slidably provided on the front and rear sides of the foaming frame 1, and the spray rack 5 is driven by a screw driver 6 fixed on the front side of the foaming frame 1. The spray rack 5 is connected to the extraction pump 4 through a connecting pipe 7. A telescopic spray gun head 8 is connected to the lower part of the spray rack 5. A feeding port 9 matching the telescopic spray gun head 8 is provided on the foaming mold 3, and a closed structure matching the foaming mold 3 is provided inside the lower end of the foaming frame 1. The closed structure includes a closed cover 14, which is arranged in a one-to-one correspondence with the foaming mold 3 and is arranged near one end of the feed port 9. The closed cover 14 is connected to a push rod 15 at one end away from the feed port 9. The push rod 15 is slidably arranged in the foaming frame 1. A slide groove matching the push rod 15 is provided on the bottom surface of the foaming frame 1. Push blocks 16 are symmetrically provided on both sides of the inside of the foaming frame 1. The push blocks 16 are driven by electric push rods 17 fixed on both sides of the foaming frame 1. The two sides of the push block 16 and the end of the push rod 15 away from the closed cover 14 are inclined surfaces that match each other. An electronic lock 18 matching the push rod 15 is connected to the bottom surface of the foaming frame 1. The push block 16 is pushed to move by the electric push rod 17, so that the closed cover 14 can move to close the feed port 9 of the foaming mold 3, thereby ensuring a good foaming production effect.

[0027] The specific implementation mode of the utility model is as follows: the foaming frame 1 is fixed in a suitable position, the foaming machine is connected to an external power supply, the sealing cover 11 is opened, and a proper amount of polyurethane raw material is added into the mixing box 2 through the feeding port, the agitator 10 is turned on, the polyurethane raw material is stirred to ensure its uniformity, the extraction pump 4 is turned on, and the movement of the spray frame 5 is controlled by the screw drive 6 at the same time, and the telescopic spray gun head 8 moves with the spray frame 5, and the telescopic extraction pump 4 is controlled to work when the telescopic spray gun head 8 moves to align with the feed port 9, the raw material in the mixing box 2 is drawn into the telescopic spray gun head 8 through the connecting pipe 7 and then injected into the foaming mold 3, and as the spray frame 5 moves, the various The foaming mold 3 is filled, and the electric push rod 17 is controlled to extend. The electric push rod 17 drives the push block 16 to move, and the push block 16 pushes the push rod 15 to move, so that the closing cover 14 moves toward the feed port 9 until the closing cover 14 blocks the feed port 9 filled with the raw material foaming mold 3. At this time, the electronic lock 18 fixes the push rod 15. After the raw material is foamed and shaped in the foaming mold 3, the electronic lock 18 is opened, and the electric push rod 17 is controlled to retract, and the closing cover 14 is returned to its original position, the sealing end cover 12 is removed, and the foaming mold 3 is opened to take it out. Finally, the foaming mold 3 is closed and fixed with the sealing end cover 12, and foaming production can be carried out again.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A foaming machine for producing polyurethane thermal insulation pipes, comprising a foaming frame (1), a mixing box (2) and a foaming mold (3), characterized in that: The mixing box (2) is embedded above the foaming frame (1), and the front and rear sides of the foaming frame (1) are unobstructed. A plurality of foaming molds (3) are fixedly arranged below the front and rear sides of the foaming frame (1). The front and rear sides of the mixing box (2) are connected to an extraction pump (4). The front and rear sides of the foaming frame (1) are slidably provided with a spray frame (5). The spray frame (5) is driven by a screw drive (6) fixed to the front side of the foaming frame (1). The spray frame (5) is connected to the extraction pump (4) through a connecting pipe (7). A telescopic spray gun head (8) is connected below the spray frame (5). A feeding port (9) matching the telescopic spray gun head (8) is provided on the foaming mold (3). A closed structure matching the foaming mold (3) is provided inside the lower end of the foaming frame (1).

2. A foaming machine for producing polyurethane thermal insulation pipe according to claim 1, characterized in that: The mixing box (2) is connected to a stirrer (10), a feeding port is provided above the mixing box (2), and a sealing cover (11) is provided on the feeding port.

3. The foaming machine for producing polyurethane thermal insulation pipe according to claim 1, characterized in that: Two groups of the foaming molds (3) are provided on both the front and rear sides, and two extraction pumps (4) are provided on both the front and rear sides of the foaming frame (1), and the foaming molds (3) in the same group are evenly spaced.

4. The foaming machine for producing polyurethane thermal insulation pipe according to claim 1, characterized in that: The foaming mold (3) is composed of two semi-cylinders arranged opposite to each other, and a sealing end cover (12) is connected to the end of the foaming mold (3).

5. The foaming machine for producing polyurethane thermal insulation pipe according to claim 1, characterized in that: A fixing plate (13) matching the foaming mold (3) is connected to the lower side of the spray rack (5).

6. The foaming machine for producing polyurethane thermal insulation pipe according to claim 1, characterized in that: The closed structure comprises a closed cover (14), the closed cover (14) being arranged in one-to-one correspondence with the foaming mold (3) and being arranged near one end of the feed port (9), the closed cover (14) being connected to one end away from the feed port (9) with a push rod (15), the push rod (15) being slidably arranged in the foaming frame (1), the bottom surface of the foaming frame (1) being provided with a slide groove matching the push rod (15), push blocks (16) being symmetrically arranged on both sides of the interior of the foaming frame (1), the push blocks (16) being driven by electric push rods (17) fixed on both sides of the foaming frame (1), the two sides of the push block (16) and the end of the push rod (15) away from the closed cover (14) being inclined surfaces matching each other, and an electronic lock (18) matching the push rod (15) being connected to the inner bottom surface of the foaming frame (1).

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