A precision polyurethane high-pressure foaming machine

Abstract

The present invention relates to the technical field of foaming machines, and in particular to a precision polyurethane high-pressure foaming machine, comprising: a plurality of raw material tanks, a mixing tank, a control box and a hanger, wherein an injection head assembly is provided below the hanger, wherein the injection head assembly comprises a large cleaning block, and the large cleaning block is used to push out materials; a telescopic part is provided in the middle of the large cleaning block, wherein the telescopic part comprises a fixed tube, a telescopic rod and an energized spiral tube, wherein the fixed tube is rotatably mounted in the middle of the large cleaning block, the telescopic rod is slidably arranged inside the fixed tube, and the energized spiral tube is fixedly connected between the telescopic rod and the fixed tube; a defoaming assembly is provided at the bottom end of the telescopic rod, wherein the defoaming assembly comprises a plurality of elastic shafts and a plurality of blades. The present invention continuously squeezes the material transferred from the high-pressure environment through the rotating blades, thereby forming a slow pressure drop, thereby reducing the generation of bubbles and improving the molding rate of the final product.

Description

Technical Field

[0001] The invention relates to the technical field of foaming machines, in particular to a precision polyurethane high-pressure foaming machine. Background Art

[0002] Publication number CN118046523A discloses a polyurethane high-pressure foaming machine, including a negative pressure pump, an air filtration module, a raw material tank, a mixing tank and a control box; the negative pressure pump is connected to the air filtration module through an air supply pipe, and a dust removal module, a drying module and a filtration module are arranged in sequence from bottom to top inside the air filtration module; a multi-way valve is provided in the middle of the air supply pipe connecting the air filtration module and the raw material tank, a premixing tank is provided between the raw material tank and the mixing tank and are connected in sequence through a supply pipe, and a foaming stirring module is provided in the mixing tank. The above-mentioned foaming machine filters the gas entering the raw material tank and the mixing tank through the air filtration module, thereby reducing the impurity content and improving product quality. The raw materials are premixed through the premixing module, and then sent into the mixing tank and then stirred and mixed for the second time to achieve the purpose of uniform foaming.

[0003] The materials are mixed under high pressure, which can suppress the formation of bubbles. However, when the materials are discharged to the outlet location with low pressure environment, the sudden drop in pressure may cause the dissolved gas to be released, forming bubbles, which may cause defects in the final product. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that when the outlet is exported to the outlet position of the low-pressure environment, a sudden drop in pressure may cause the release of dissolved gas, forming bubbles, and causing defects in the final product. A precision polyurethane high-pressure foaming machine is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A precision polyurethane high-pressure foaming machine, comprising: a plurality of raw material tanks, a mixing tank, a control box and a hanger, an injection head assembly is provided below the hanger, the injection head assembly includes a large cleaning block, the large cleaning block is used to push out the material;

[0007] A telescopic member is provided in the middle of the large cleaning block, and the telescopic member includes a fixed tube, a telescopic rod and an energized spiral tube. The fixed tube is rotatably mounted in the middle of the large cleaning block, the telescopic rod is slidably arranged inside the fixed tube, and the energized spiral tube is fixedly connected between the telescopic rod and the fixed tube;

[0008] The bottom end of the telescopic rod is provided with a defoaming assembly, which includes multiple elastic shafts and multiple blades. The multiple elastic shafts are annularly fixedly connected to the bottom end of the telescopic member, and the multiple blades are fixedly connected to the sides of the multiple elastic shafts. The blades are vertically arranged upward, and the blades are provided with multiple defoaming holes.

[0009] The end of the fixed pipe is fixedly connected with a cleaning ring, and the cleaning ring is provided with a plurality of cleaning ports. The cleaning ports are arranged obliquely and are used for cleaning and deflecting the blades outwards.

[0010] Preferably, the injection head assembly also includes a feed pipe, a control machine, a discharge pipe and an injection module. A discharge cavity is provided inside the injection module. The feed pipe is vertically fixedly connected to the side of the injection module and is connected to the discharge cavity. The control machine is fixedly installed on the upper end of the injection module, and the discharge pipe is fixedly installed on the side of the injection module for discharging the cleaning liquid.

[0011] Preferably, two handles are symmetrically fixedly connected to the side of the control machine, and a control panel is provided on the side of the control machine for controlling the telescopic member.

[0012] Preferably, the outlet of the outlet cavity is set to be an inverted truncated cone, the bottom end of the telescopic rod is fixedly connected to a small cleaning block, the upper end of the small cleaning block is set to be conical, and when the telescopic rod is in an extended state, the small cleaning block is located inside the outlet.

[0013] Preferably, the blades are inclined blades, and when the cleaning port drives the blades to deflect, multiple blades form an inverted frustum-shaped extrusion piece, which divides the outlet cavity into an upper processing space and a lower outlet space, and the extrusion piece is used to extrude the material inside the processing space.

[0014] Preferably, two cleaning strips are fixedly connected to the inside of the cleaning port, and the two cleaning strips are respectively arranged at the bottom of the cleaning port away from the telescopic part and the upper side of the cleaning port close to the telescopic part. The two cleaning strips are used to clean the upper and lower surfaces of the blades.

[0015] Preferably, a scraping assembly is sleeved on the telescopic member, and the scraping assembly is used to clean material residues on the side wall of the fixed tube.

[0016] Preferably, the scraping assembly includes a scraper ring and an iron core column, the iron core column is fixedly connected to the top of the telescopic rod and is located inside the fixed tube, the scraper ring is sleeved on the fixed tube, and the bottom surface of the scraper ring is set as a triangular protrusion inclined inward.

[0017] Preferably, an inner scraping assembly is provided above the scraping ring, and the inner scraping assembly is used to clean the bottom surface of the large cleaning block.

[0018] Preferably, the inner scraping assembly includes a plurality of elastic strips and scraping belts, the plurality of elastic strips are fixedly connected to the upper surface of the scraping ring in an annular shape, and the scraping belts are fixedly connected to the upper ends of the plurality of elastic strips.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Multiple blades arranged upwardly and tilted form an upward pushing and squeezing force, continuously squeezing the material and slowing down the speed of pressure change, thereby reducing the generation of bubbles caused by sudden changes in air pressure. At the same time, the defoaming holes on the rotating blades physically squeeze and crush the generated bubbles, thereby defoaming the generated bubbles and reducing the number of bubbles. The present invention continuously squeezes the material transferred from the high-pressure environment through the rotating blades, forming a slow pressure drop, thereby reducing the generation of bubbles and improving the molding rate of the final product.

[0021] 2. First, the large cleaning block is controlled to push and clean the residual material. When the large cleaning block is pushed, the large cleaning block is controlled to move upward, and the power is no longer supplied to the energized spiral tube, so that the telescopic part changes from a contracted state to an extended state, driving the small cleaning block below to move downward to clean the material at the outlet, thereby pushing out and cleaning the material, thereby preventing the material from solidifying at the outlet and causing blockage of the outlet.

[0022] 3. After defoaming is completed, the energized spiral tube is de-energized, and the telescopic rod is reset under the action of elastic force. At this time, the blades set on the defoaming component will move downward with the telescopic rod. During the movement, the blades will move along the shape of the cleaning port. The two cleaning strips on the cleaning port will scrape and clean the upper and lower surfaces of the blades to reduce residue;

[0023] 4. The magnetic field at the top of the iron core column generates magnetic attraction for the metal scraper ring. As the iron core column moves upward with the telescopic rod, it drives the scraper ring upward, thereby transferring the scraper ring to the upper end of the fixed tube. When the material guiding is completed, the energized spiral tube is de-energized, the magnetic field on the iron core column disappears, and the scraper ring slides down along the fixed tube under the action of its own gravity. The triangular protrusion at the bottom of the scraper ring scrapes and cleans the residual material on the surface of the fixed tube, thereby reducing the residual material.

[0024] 5. After the inclined elastic strip contacts the large cleaning block above, it will drive the elastic strip to deflect outward, so that the scraper belt will expand and deform. When the material is discharged, the scraper ring will move downward, which will drive the elastic strip to move downward. The moving scraper belt will scrape and clean the lower surface of the large cleaning block, thereby reducing material residue.

[0025] 6. By turning the telescopic part on and off, the scraping assembly and the inner scraping assembly are driven to move up and down, thereby quickly cleaning the components inside the outlet cavity, reducing material residue and improving the accuracy of quantitative material outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a front structural schematic diagram of a precision polyurethane high-pressure foaming machine proposed by the present invention;

[0027] Figure 2 This is a schematic diagram of the top view of a precision polyurethane high-pressure foaming machine proposed by the present invention;

[0028] Figure 3 This is a structural schematic diagram of the injection head assembly of a precision polyurethane high-pressure foaming machine proposed by the present invention;

[0029] Figure 4 This is a schematic cross-sectional view of the injection head assembly of a precision polyurethane high-pressure foaming machine proposed by the present invention;

[0030] Figure 5 This is a schematic diagram of the telescopic structure of a precision polyurethane high-pressure foaming machine proposed by the present invention;

[0031] Figure 6 This is a schematic diagram of the cross-sectional structure of the telescopic part of a precision polyurethane high-pressure foaming machine proposed by the present invention;

[0032] Figure 7 This is a schematic diagram of the defoaming component structure of a precision polyurethane high-pressure foaming machine proposed by the present invention;

[0033] Figure 8 This is a schematic diagram of the cleaning ring structure of a precision polyurethane high-pressure foaming machine proposed by the present invention;

[0034] Figure 9 This is a schematic diagram of the separation structure of the scraping component of a precision polyurethane high-pressure foaming machine proposed by the present invention;

[0035] Figure 10 This is a schematic diagram of the adjustment structure of the telescopic parts of a precision polyurethane high-pressure foaming machine proposed by the present invention.

[0036] In the figure: 1. Raw material tank; 2. Mixing tank; 3. Hanger; 4. Injection head assembly; 41. Large cleaning block; 42. Feed pipe; 43. Control machine; 44. Export pipe; 45. Injection module; 5. Telescopic part; 51. Fixed pipe; 52. Telescopic rod; 53. Powered spiral tube; 6. Defoaming assembly; 61. Elastic shaft; 62. Blade; 7. Cleaning ring; 8. Scraping assembly; 81. Scraping ring; 82. Core column; 9. Inner scraping assembly; 91. Elastic strip; 92. Scraping belt; 10. Handle; 11. Small cleaning block; 12. Cleaning strip. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] The terms "upper", "lower", "left", "right", "middle" and "one" used in the present invention are only for the convenience of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships should be regarded as within the scope of the present invention without substantially changing the technical content.

[0039] Reference Figures 1-10 A precision polyurethane high-pressure foaming machine includes: multiple raw material tanks 1, a mixing tank 2, a control box and a hanger 3. An injection head assembly 4 is provided below the hanger 3. The injection head assembly 4 includes a large cleaning block 41, which is used to push out the material;

[0040] A telescopic member 5 is provided in the middle of the large cleaning block 41. The telescopic member 5 includes a fixed tube 51, a telescopic rod 52, and an energized spiral tube 53. The fixed tube 51 is rotatably mounted in the middle of the large cleaning block 41. The telescopic rod 52 is slidably disposed inside the fixed tube 51. The energized spiral tube 53 is fixedly connected between the telescopic rod 52 and the fixed tube 51.

[0041] The bottom end of the telescopic rod 52 is provided with a defoaming component 6, which includes a plurality of elastic shafts 61 and a plurality of blades 62. The plurality of elastic shafts 61 are annularly fixedly connected to the bottom end of the telescopic member 5, and the plurality of blades 62 are fixedly connected to the sides of the plurality of elastic shafts 61. The blades 62 are vertically arranged upward, and a plurality of defoaming holes are provided on the blades 62.

[0042] A cleaning ring 7 is fixedly connected to the end of the fixed tube 51 . The cleaning ring 7 is provided with a plurality of cleaning ports. The cleaning ports are arranged obliquely for cleaning and deflecting the blades 62 outwards.

[0043] In the embodiment of the above technical solution, when the material is not being guided, the energized spiral tube 53 is energized, so that the energized spiral tube 53 is extended and retracted, driving the telescopic rod 52 to slide and tighten inside the fixed tube 51. During the contraction of the telescopic member 5, the upward-moving blade 62 will move to the inside of the cleaning port, and the inclined cleaning port will drive the blade 62 to deflect, thereby expanding the blade 62 to form a rotating extrusion member. An upward push and extrusion is formed by multiple upwardly inclined blades 62, which continuously extrude the material and slow down the speed of pressure change, thereby reducing the generation of bubbles caused by sudden changes in air pressure. At the same time, the defoaming holes on the rotating blades 62 physically squeeze and crush the generated bubbles, thereby defoaming the bubbles that have been generated and reducing the number of bubbles.

[0044] The present invention continuously squeezes the material transferred from the high-pressure environment by the rotating blades 62, thereby causing a slow pressure drop, thereby reducing the generation of bubbles and improving the molding rate of the final product.

[0045] The preferred technical solution in this embodiment is:

[0046] Reference Figure 3 and Figure 4 The injection head assembly 4 also includes a feed pipe 42, a control machine 43, a derivation pipe 44 and an injection module 45. The injection module 45 is provided with a derivation cavity. The feed pipe 42 is vertically fixedly connected to the side of the injection module 45 and is connected to the derivation cavity. The control machine 43 is fixedly installed at the upper end of the injection module 45. The derivation pipe 44 is fixedly installed on the side of the injection module 45 for derivation of the cleaning liquid.

[0047] After the mixed material is introduced into the injection module 45, the rotating end of the control machine 43 drives the telescopic part 5 to rotate to mix and defoam the mixed material. After the material is discharged, due to the different viscosities formed by different mixed materials, when the material with higher viscosity is discharged, the material discharge speed will be slower. The control machine 43 pushes the large cleaning block 41 inside the discharge chamber. While quickly discharging the material, the material remaining on the inner wall of the discharge chamber is discharged to avoid the solidification of the residual material, which causes the discharge port position of the discharge chamber to be blocked.

[0048] When the large cleaning block 41 moves downward inside the outlet chamber and scrapes and pushes out the material, the large cleaning block 41 will drive the telescopic part 5 and the small cleaning block 11 to move downward. The small cleaning block 11 will clean the outlet of the outlet chamber during the downward movement, and at the same time seal the outlet to seal the entire outlet chamber. When the cleaning agent is subsequently introduced to clean the entire injection head, a sealed space can be formed inside the entire outlet chamber, and the residual raw materials inside can be cleaned through chemical reactions, thereby ensuring the cleaning effect.

[0049] Reference Figure 3 and Figure 4 The control machine 43 has two handles 10 symmetrically fixedly connected to its side, and a control panel is provided on its side for controlling the telescopic member 5 .

[0050] In the process of introducing materials into the mold, it is necessary to move the injection hopper assembly manually or by a robotic arm to introduce the internal raw materials into the mold for foaming molding.

[0051] At the same time, in order to facilitate manual control, the working states of the telescopic member 5 and the control machine 43 are controlled by a plurality of buttons on a control panel arranged on the side of the control machine 43 .

[0052] Reference Figure 4The outlet of the outlet cavity is set to be an inverted truncated cone, and a small cleaning block 11 is fixedly connected to the bottom end of the telescopic rod 52. The upper end of the small cleaning block 11 is set to be conical. When the telescopic rod 52 is in an extended state, the small cleaning block 11 is located inside the outlet.

[0053] The inverted frustum-shaped outlet is designed to control the flow rate of the material and avoid a large amount of material flowing at the same time, causing the material to splash. However, during the outlet process, some material will remain inside the outlet of the outlet cavity. After the material is introduced, the remaining material is first pushed and cleaned by controlling the large cleaning block 41. After the large cleaning block 41 is pushed, the large cleaning block 41 is controlled to move upward, and at the same time, the energized spiral tube 53 is no longer energized, so that the telescopic part 5 changes from a contracted state to an extended state, driving the small cleaning block 11 below to move downward for cleaning, and pushing out and cleaning the material at the outlet position, thereby avoiding the material solidifying at the outlet position and causing the outlet to be blocked.

[0054] Reference Figure 7-10 The blades 62 are inclined blades, and when the cleaning port drives the blades 62 to deflect, the multiple blades 62 form an inverted truncated cone-shaped extrusion piece, which divides the outlet cavity into an upper processing space and a lower outlet space. The extrusion piece is used to extrude the material inside the processing space;

[0055] Two cleaning strips 12 are fixedly connected to the inside of the cleaning port. The two cleaning strips 12 are respectively arranged at the bottom of the cleaning port away from the telescopic member 5 and the upper side of the cleaning port close to the telescopic member 5. The two cleaning strips 12 are used to clean the upper and lower surfaces of the blade 62.

[0056] A sudden drop in material pressure may cause the release of dissolved gas, forming bubbles, which may lead to defects in the final product, such as voids or uneven structures. In cases where high-precision products are required and the raw material properties are sensitive, defoaming treatment is required to remove the bubbles.

[0057] The outlet chamber is separated by rotating blades 62 to form an upper processing space. A plurality of blades 62 arranged upwardly tilted form an upward push and squeeze to reduce the generation of bubbles caused by sudden changes in air pressure. At the same time, the defoaming pore liquid on the blades 62 can squeeze and defoam the exported material, and block the bubbles generated inside the material due to changes in the pressure environment. As the material is introduced into the processing space, the processed material will be transferred to the outlet space, thereby carrying out normal material export. After the material is processed, the blades 62 stop rotating, and the residual material inside the outlet chamber is pushed out through the large cleaning block 41.

[0058] Since some material will remain on the rotating blades 62 during the mixing and defoaming process of the material, the residual material will cause a decrease in the amount of material during foaming, thereby affecting the foaming molding. Therefore, after the defoaming is completed, the energized spiral tube 53 is de-energized, and the telescopic rod 52 is driven to reset under the action of elastic force. At this time, the blade 62 set on the defoaming component 6 will move downward with the telescopic rod 52. During the movement, the blade 62 will move along the shape of the cleaning port, and the upper and lower surfaces of the blade 62 will be scraped and cleaned by the two cleaning strips 12 on the cleaning port to reduce residue.

[0059] The upper end of the small cleaning block 11 is set to be conical, so that the cleaned materials can be transferred downward, avoiding the cleaned materials from falling and accumulating on the upper surface of the small cleaning block 11.

[0060] Reference Figure 9 and Figure 10 , the telescopic member 5 is sleeved with a scraping assembly 8, and the scraping assembly 8 is used to clean the material residue on the side wall of the fixed tube 51;

[0061] The scraping assembly 8 includes a scraping ring 81 and an iron core column 82. The iron core column 82 is fixedly connected to the top of the telescopic rod 52 and is located inside the fixed tube 51. The scraping ring 81 is sleeved on the fixed tube 51, and the bottom surface of the scraping ring 81 is set to be a triangular protrusion inclined inward.

[0062] During the process of discharging the material, some of the material may adhere to the side wall of the fixed tube 51 . In order to reduce the residual amount of the material and reduce the impact on foaming, the residual material on the side wall of the fixed tube 51 needs to be cleaned.

[0063] Before guiding the material, the energized spiral tube 53 is energized. During the process of power-on and contraction, the energized spiral tube 53 will drive the telescopic rod 52 to move upward. At the same time, the iron core column 82 arranged at the upper end of the telescopic rod 52 will generate a magnetic field inside the energized spiral tube 53. The magnetic field at the upper end of the iron core column 82 will generate magnetic attraction on the metal scraper ring 81. During the process of the telescopic rod 52 moving upward, the iron core column 82 will drive the scraper ring 81 to move upward, thereby transferring the scraper ring 81 to the upper end of the fixed tube 51. When the material guiding is completed, the energized spiral tube 53 is de-energized, and the magnetic field on the iron core column 82 disappears. The scraper ring 81 will slide down along the fixed tube 51 under the action of its own gravity, and the triangular protrusion at the bottom of the scraper ring 81 will scrape and clean the material remaining on the surface of the fixed tube 51, thereby reducing the residual material.

[0064] Reference Figure 9 and Figure 10 , an inner scraping assembly 9 is provided above the scraping ring 81, and the inner scraping assembly 9 is used to clean the bottom surface of the large cleaning block 41;

[0065] The inner scraping assembly 9 includes a plurality of elastic strips 91 and a scraping belt 92 . The plurality of elastic strips 91 are fixedly connected to the upper surface of the scraping ring 81 in an annular shape, and the scraping belt 92 is fixedly connected to the upper ends of the plurality of elastic strips 91 .

[0066] As the large cleaning block 41 presses the material downward and transfers it, there will be adhered material on the lower surface, which affects the quantitative discharge of the material. In order to reduce the residual material on the large cleaning block 41, it is necessary to scrape the material. When the material is not guided, the telescopic part 5 is in a retracted state, thereby driving the scraper ring 81 to move upward. The upward scraper ring 81 will drive multiple elastic strips 91 to move upward. After the inclined elastic strip 91 contacts the large cleaning block 41 above, it will drive the elastic strip 91 to deflect outward, so that the scraping belt 92 expands and deforms. When the material is discharged, the scraper ring 81 moves downward, which will drive the elastic strip 91 to move downward. During the contraction process, the multiple elastic strips 91 will drive the multiple scraping belts 92 to be recovered. The moving scraping belt 92 scrapes and cleans the lower surface of the large cleaning block 41, thereby reducing the residual material.

[0067] During the material guiding process, the introduced material will squeeze the scraper belt 92 and the scraper ring 81 , thereby limiting the positions of the scraper belt 92 and the scraper ring 81 .

[0068] By turning the telescopic member 5 on and off, the scraping assembly 8 and the inner scraping assembly 9 are driven to move up and down, thereby quickly cleaning the components inside the outlet cavity, reducing material residue and improving the accuracy of quantitative material outlet.

[0069] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A precision polyurethane high-pressure foaming machine, comprising: Multiple raw material tanks, mixing tanks, control boxes and hangers, characterized in that an injection head assembly is provided below the hanger, the injection head assembly includes a large cleaning block, and the large cleaning block is used to push out the material; A telescopic member is provided in the middle of the large cleaning block, and the telescopic member includes a fixed tube, a telescopic rod and an energized spiral tube. The fixed tube is rotatably mounted in the middle of the large cleaning block, the telescopic rod is slidably arranged inside the fixed tube, and the energized spiral tube is fixedly connected between the telescopic rod and the fixed tube; The bottom end of the telescopic rod is provided with a defoaming assembly, which includes multiple elastic shafts and multiple blades. The multiple elastic shafts are annularly fixedly connected to the bottom end of the telescopic member, and the multiple blades are fixedly connected to the sides of the multiple elastic shafts. The blades are vertically arranged upward, and the blades are provided with multiple defoaming holes. The end of the fixed pipe is fixedly connected to a cleaning ring, and the cleaning ring is provided with a plurality of cleaning ports, which are arranged obliquely for cleaning and deflecting the blades outwards; The telescopic member is sleeved with a scraping assembly, which is used to clean the material residue on the side wall of the fixed pipe; The scraper assembly includes a scraper ring and an iron core column. The iron core column is fixedly connected to the top of the telescopic rod and is located inside the fixed tube. The scraper ring is sleeved on the fixed tube, and the bottom surface of the scraper ring is configured as a triangular protrusion inclined inward. When the energized spiral tube is energized, the iron core column arranged at the upper end of the telescopic rod generates a magnetic field inside the energized spiral tube. The magnetic field at the upper end of the iron core column generates magnetic attraction to the metal scraper ring. When the energized spiral tube is de-energized, the magnetic field on the iron core column disappears, and the scraper ring slides down along the fixed tube under the action of its own gravity. An inner scraping assembly is provided above the scraping ring, and the inner scraping assembly is used to clean the bottom surface of the large cleaning block; The inner scraping assembly includes a plurality of elastic strips and a scraping belt. The plurality of elastic strips are annularly distributed and fixedly connected to the upper surface of the scraping ring. The scraping belt is fixedly connected to the upper ends of the plurality of elastic strips.

2. A precision polyurethane high-pressure foaming machine according to claim 1, characterized in that: The injection head assembly also includes a feed pipe, a control machine, a guide pipe and an injection module. A guide cavity is provided inside the injection module. The feed pipe is vertically fixedly connected to the side of the injection module and is connected to the guide cavity. The control machine is fixedly installed on the upper end of the injection module, and the guide pipe is fixedly installed on the side of the injection module for guiding out the cleaning liquid.

3. A precision polyurethane high-pressure foaming machine according to claim 2, characterized in that: Two handles are symmetrically fixedly connected to the side of the control machine, and a control panel is provided on the side of the control machine for controlling the telescopic member.

4. A precision polyurethane high-pressure foaming machine according to claim 2, characterized in that: The outlet of the outlet cavity is configured as an inverted truncated cone, a small cleaning block is fixedly connected to the bottom end of the telescopic rod, and the upper end of the small cleaning block is configured as a cone. When the telescopic rod is in an extended state, the small cleaning block is located inside the outlet.

5. A precision polyurethane high-pressure foaming machine according to claim 2, characterized in that: The blades are inclined blades, and when the cleaning port drives the blades to deflect, multiple blades form an inverted truncated cone-shaped extrusion piece, which divides the outlet cavity into an upper processing space and a lower outlet space. The extrusion piece is used to extrude the material inside the processing space.

6. A precision polyurethane high-pressure foaming machine according to claim 1, characterized in that: Two cleaning strips are fixedly connected to the inside of the cleaning port. The two cleaning strips are respectively arranged at the bottom of the cleaning port away from the telescopic member and the upper side of the cleaning port close to the telescopic member. The two cleaning strips are used to clean the upper and lower surfaces of the blades.

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