Rapid demolding device for polyurethane foaming mold

Abstract

The utility model discloses a quick demoulding device for a polyurethane foaming mould, which relates to the technical field of polyurethane demoulding, comprises a protective cavity and a guide frame, and is characterized in that a demoulding spraying component is arranged at one end of the outer wall of the guide frame, and a lower mould and an upper mould are fixed on the inner side surface by fastening bolts through the arranged guide frame. The two fixed seats are arranged, so that the use angles of the two adjusting frames can be adjusted by utilizing the rotating shafts; a plurality of conveying pipes arranged on the inner side faces of the two adjusting frames convey demolding liquid in a storage cavity through the multiple conveying pipes, finally, the inner walls of a lower mold and an upper mold are sprayed through a demolding liquid spraying opening, rapid demolding work of the lower mold and the upper mold is achieved, and an arranged sliding block slides in an adjusting groove to adjust the using position of a demolding plate; when the demolding plate is extruded to apply gravity to the demolding plate, polyurethane in the lower mold and the upper mold is extruded to fall off, and rapid demolding work is achieved.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane demolding technology, and in particular to a rapid demolding device for polyurethane foam molds. Background Technology

[0002] Polyurethane foam materials are widely used in construction, automobiles, electronics, packaging and other fields due to their excellent heat insulation, sound insulation and shock absorption properties. Polyurethane foaming is a process in which polyurethane raw materials undergo a chemical reaction in a mold to form a foam structure. In this process, the design of the mold and the demolding technology are crucial to the quality of the product and the production efficiency.

[0003] Existing manual demolding of polyurethane foam requires a lot of manpower and time, resulting in low production efficiency. Manual operation makes it difficult to ensure the uniformity and consistency of each demolding, which can easily lead to surface defects in the product. Traditional mechanical demolding devices may damage the mold and affect its service life. At the same time, some demolding devices cannot provide good support during the demolding process, resulting in product deformation or damage.

[0004] To address the above issues, a rapid demolding device for polyurethane foam molds needs to be designed to overcome these problems. Utility Model Content

[0005] The main objective of this invention is to provide a rapid demolding device for polyurethane foam molds, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A rapid demolding device for polyurethane foam molds includes a protective cavity and a guide frame, characterized in that: a demolding spray assembly is provided at one end of the outer wall of the guide frame;

[0008] The release spray assembly includes a lower mold disposed at one end of the inner side of the guide frame, an upper mold connected to the end of the inner side of the guide frame away from the lower mold, a fixed seat connected to one end of the outer wall of the guide frame, a rotating shaft connected to the top of each of the two fixed seats, an adjusting frame connected to the top of each of the two rotating shafts, a storage cavity installed at one end of each of the two adjusting frames, a plurality of conveying pipes connected to the ends of the two adjusting frames away from the storage cavity, and a release liquid spray nozzle connected to the ends of the plurality of conveying pipes away from the storage cavity.

[0009] As a preferred embodiment of this utility model, both ends of the inner side of the upper mold are provided with adjustment grooves, and each of the multiple adjustment grooves is provided with a slider. A stripping template is installed at the end of each slider away from the upper mold, and multiple vent holes are provided at the top of the stripping template.

[0010] As a preferred embodiment of this utility model, a hydraulic cylinder is provided at the top of the guide frame, a piston rod is connected to the output end of the hydraulic cylinder, a hydraulic telescopic rod is connected to the output end of the piston rod, and a pressing and releasing template is rotatably connected to the bottom of the hydraulic telescopic rod.

[0011] As a preferred embodiment of this utility model, the guide frame is connected to the protective cavity (1) by fastening bolts, and the guide frame is connected to the lower mold and the upper mold by fastening bolts.

[0012] As a preferred embodiment of this utility model, the fixed base is connected to the rotating shaft by fastening bolts, the two rotating shafts are threadedly fixedly connected to the two adjusting frames, and the two adjusting frames are fixedly connected to the storage cavity.

[0013] In a preferred embodiment of this utility model, the adjusting frame is rotatably connected to a plurality of the conveying pipes, and the plurality of the conveying pipes are rotatably connected to a plurality of the release liquid spray nozzles.

[0014] In a preferred embodiment of this utility model, the demolding template is slidably connected to the inner side of the upper mold by a plurality of sliders, and the sliders are in contact with the inner wall of the adjustment groove.

[0015] In a preferred embodiment of this utility model, the hydraulic telescopic rod is rotatably connected to the extrusion and release template, and the bottom of the extrusion and release template contacts the top of the release template.

[0016] Beneficial effects

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This rapid demolding device for polyurethane foam molds uses guide frames and fastening bolts to fix the lower and upper molds to their inner sides, providing good support for the polyurethane foam during demolding. Two fixed seats with rotating shafts allow adjustment of the angle of two adjustment frames. Multiple delivery pipes located on the inner sides of the two adjustment frames transport the demolding liquid from the storage cavity. Finally, the demolding liquid is sprayed onto the inner walls of the lower and upper molds through spray nozzles, enabling rapid demolding. A slider slides within an adjustment groove to adjust the position of the demolding template. When the demolding template is pressed against the template, the polyurethane inside the lower and upper molds is squeezed out, achieving rapid demolding. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the extrusion assembly structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the installation structure of the release liquid spray nozzle of this utility model;

[0022] Figure 4 This is a schematic diagram of the template removal and installation structure of this utility model.

[0023] In the diagram: 1. Protective cavity; 2. Guide frame; 3. Demolding spray assembly; 4. Hydraulic extrusion assembly; 301. Lower mold; 302. Upper mold; 303. Fixed base; 304. Rotating shaft; 305. Adjusting frame; 306. Storage cavity; 307. Conveying pipe; 308. Demolding liquid spray nozzle; 309. Adjusting groove; 310. Demolding template; 311. Slider; 312. Vent hole; 401. Hydraulic cylinder; 402. Piston rod; 403. Hydraulic telescopic rod; 404. Extrusion demolding template. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figures 1-4 As shown, a rapid demolding device for polyurethane foam molds includes a protective cavity 1 and a guide frame 2, characterized in that: a demolding spray assembly 3 is provided at one end of the outer wall of the guide frame 2;

[0026] The demolding spray assembly 3 includes a lower mold 301 disposed at one end of the inner side of the guide frame 2, an upper mold 302 connected to the end of the inner side of the guide frame 2 away from the lower mold 301, a fixed seat 303 connected to one end of the outer wall of the guide frame 2, a rotating shaft 304 connected to the top of each of the two fixed seats 303, an adjusting frame 305 connected to the top of each of the two rotating shafts 304, a storage cavity 306 installed at one end of each of the two adjusting frames 305, a plurality of conveying pipes 307 connected to the end of each of the two adjusting frames 305 away from the storage cavity 306, and a demolding liquid spray nozzle 308 connected to the end of each of the multiple conveying pipes 307 away from the storage cavity 306.

[0027] Both ends of the inner side of the upper mold 302 are provided with adjustment grooves 309, and each adjustment groove 309 is provided with a slider 311. The end of each slider 311 away from the upper mold 302 is equipped with a demolding template 310, and the top of the demolding template 310 is provided with multiple vent holes 312.

[0028] Guide frame 2 is connected to protective cavity 1 by fastening bolts. Guide frame 2 is also connected to lower mold 301 and upper mold 302 by fastening bolts. Fixed seat 303 is connected to rotating shaft 304 by fastening bolts. Two rotating shafts 304 are threadedly fixed to two adjusting frames 305. Two adjusting frames 305 are fixed to storage cavity 306. Adjusting frame 305 is rotatably connected to multiple conveying pipes 307. Multiple conveying pipes 307 are rotatably connected to multiple release liquid spray nozzles 308. Release template 310 is slidably connected to the inner side of upper mold 302 by multiple sliders 311. Slider 311 contacts the inner wall of adjusting groove 309.

[0029] A hydraulic cylinder 401 is installed on the top of the guide frame 2. A piston rod 402 is connected to the output end of the hydraulic cylinder 401. A hydraulic telescopic rod 403 is connected to the output end of the piston rod 402. A pressing demolding template 404 is rotatably connected to the bottom of the hydraulic telescopic rod 403. The hydraulic telescopic rod 403 and the pressing demolding template 404 are rotatably connected. The bottom of the pressing demolding template 404 contacts the top of the demolding template 310.

[0030] In this system, the lower mold 301 and the upper mold 302 are securely fixed to the inner side of the guide frame 2 using fastening bolts through the pre-set fastening bolt holes on the guide frame 2. Two fixing seats 303 are installed on one end of the outer wall of the guide frame 2 using fastening bolts. The rotating shaft 304 passes through the fixing seats 303 and the adjusting frame 305, and is connected to the adjusting frame 305 by threads to achieve angle adjustment of the adjusting frame 305. A storage cavity 306 is fixedly installed on the adjusting frame 305 for storing the release fluid. Multiple delivery pipes 307 are connected at one end to the storage cavity 306, and at the other end extend to the vicinity of the inner wall of the lower mold 301 and the upper mold 302, and are connected to the release fluid spray nozzle 308. The delivery pipes 307 are connected to the adjusting frame 305. The frame 305 and the release liquid spray nozzle 308 are rotatably connected to facilitate the adjustment of the spray direction. The release template 310 is installed on the inner side of the upper mold 302 by multiple sliders 311. The sliders 311 slide in the adjustment groove 309, which is located on the inner side of the upper mold 302. The top of the release template 310 is provided with multiple vent holes 312 to facilitate the discharge of gas during polyurethane foaming. The output shaft of the hydraulic cylinder 401 is connected to the hydraulic telescopic rod 403 through the piston rod 402. The bottom of the hydraulic telescopic rod 403 is rotatably connected to the extrusion release template 404. The hydraulic cylinder 401 transmits power to the extrusion release template 404 through the piston rod 402 and the hydraulic telescopic rod 403.

[0031] Rotate the rotating shaft 304 to adjust the angle of the adjusting frame 305 so that the release liquid spray nozzle 308 is aligned with the position to be sprayed on the inner wall of the mold. Start the release liquid delivery system. The release liquid is delivered from the storage cavity 306 to the release liquid spray nozzle 308 through the delivery pipe 307. The release liquid spray nozzle 308 sprays the release liquid evenly on the inner wall of the lower mold 301 and the upper mold 302 to form a release layer. Inject polyurethane raw material into the closed mold cavity composed of the lower mold 301 and the upper mold 302. The polyurethane raw material undergoes a chemical reaction in the mold cavity and foams. The hydraulic cylinder 401 drives the extrusion release plate 404 to move downward through the piston rod 402 and the hydraulic telescopic rod 403. The bottom of the extrusion release plate 404 contacts the top of the release plate 310 and applies pressure. Under the action of the extrusion release plate 404, the release plate 310 extrudes the polyurethane foam in the lower mold 301 and the upper mold 302 downward.

[0032] It should be noted that this utility model is a rapid demolding device for polyurethane foam molds. In use, firstly, the rotating shaft 304 is manually rotated to adjust the angle of the adjusting frame 305, so that the release liquid spray nozzle 308 is aligned with the area on the inner wall of the mold to be sprayed. The release liquid is transported from the storage chamber 306 through the conveying pipe 307 to the release liquid spray nozzle 308. The release liquid spray nozzle 308 evenly sprays the release liquid onto the inner walls of the lower mold 301 and the upper mold 302, forming a release layer. Polyurethane raw material is then injected into the sealed mold cavity formed by the lower mold 301 and the upper mold 302. The polyurethane raw material undergoes a chemical reaction within the mold cavity, foaming and gradually filling the entire mold cavity. After forming the polyurethane foam of the desired shape, manually drag the rotating shaft 304 again to move the two adjusting frames 305 away from the upper mold 302 and the lower mold 301. Then, start the hydraulic cylinder 401. The hydraulic cylinder 401 drives the extrusion mold 404 to move downward through the piston rod 402 and the hydraulic telescopic rod 403. The bottom of the extrusion mold 404 contacts the top of the mold 310 and applies pressure. Under the action of the extrusion mold 404, the mold 310 squeezes the polyurethane foam in the lower mold 301 and the upper mold 302 downward, separating it from the inner wall of the mold. After the polyurethane foam is completely demolded, open the mold and take out the formed polyurethane foam product.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rapid demolding device for polyurethane foam molds, comprising a protective cavity (1) and a guide frame (2), characterized in that: A demolding spray assembly (3) is provided at one end of the outer wall of the guide frame (2); The demolding spray assembly (3) includes a lower mold (301) disposed at one end of the inner side of the guide frame (2), an upper mold (302) connected to the end of the inner side of the guide frame (2) away from the lower mold (301), a fixed seat (303) connected to one end of the outer wall of the guide frame (2), a rotating shaft (304) connected to the top of each of the two fixed seats (303), an adjusting frame (305) connected to the top of each of the two rotating shafts (304), a storage cavity (306) installed at one end of each of the two adjusting frames (305), a plurality of conveying pipes (307) connected to the end of each of the two adjusting frames (305) away from the storage cavity (306), and a demolding liquid spray nozzle (308) connected to the end of each of the plurality of conveying pipes (307) away from the storage cavity (306).

2. The rapid demolding device for polyurethane foam molds according to claim 1, characterized in that: The upper mold (302) has adjustment grooves (309) at both ends on its inner side. Each of the adjustment grooves (309) has a slider (311) inside. Each of the sliders (311) has a stripping plate (310) installed at the end away from the upper mold (302). Each stripping plate (310) has multiple vent holes (312) on its top.

3. The rapid demolding device for polyurethane foam molds according to claim 1, characterized in that: A hydraulic cylinder (401) is provided on the top of the guide frame (2). A piston rod (402) is connected to the output end of the hydraulic cylinder (401). A hydraulic telescopic rod (403) is connected to the output end of the piston rod (402). A pressing release template (404) is rotatably connected to the bottom of the hydraulic telescopic rod (403).

4. The rapid demolding device for polyurethane foam molds according to claim 1, characterized in that: The guide frame (2) is connected to the protective cavity (1) by fastening bolts, and the guide frame (2) is connected to the lower mold (301) and the upper mold (302) by fastening bolts.

5. The rapid demolding device for polyurethane foam molds according to claim 1, characterized in that: The fixed base (303) is connected to the rotating shaft (304) by fastening bolts. The two rotating shafts (304) are threadedly fixedly connected to the two adjusting frames (305). The two adjusting frames (305) are fixedly connected to the storage cavity (306).

6. The rapid demolding device for polyurethane foam mold according to claim 1, characterized in that: The adjusting frame (305) is rotatably connected to a plurality of the conveying pipes (307), and the plurality of the conveying pipes (307) are rotatably connected to a plurality of the release liquid spray nozzles (308).

7. The rapid demolding device for polyurethane foam molds according to claim 2, characterized in that: The release template (310) is slidably connected to the inner side of the upper mold (302) by a plurality of sliders (311), and the sliders (311) are in contact with the inner wall of the adjustment groove (309).

8. The rapid demolding device for polyurethane foam molds according to claim 3, characterized in that: The hydraulic telescopic rod (403) is rotatably connected to the extrusion template (404), and the bottom of the extrusion template (404) contacts the top of the extrusion template (310).

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