Foaming limiting device of polyurethane low-pressure foaming machine

Abstract

The utility model relates to the technical field of foaming devices, and discloses a foaming limiting device of a polyurethane low-pressure foaming machine, which comprises a limiting cover shell, a foaming bottom plate and a base, the limiting cover shell is arranged above the foaming bottom plate, a foaming cavity is arranged between the limiting cover shell and the foaming bottom plate, the side surface of the limiting cover shell is fixed on a supporting seat, a movable pressing plate is arranged in the limiting cover shell, and the movable pressing plate is fixed on the base. A movable pressing plate control device is arranged at the top of the limiting housing, and a lifting control device and a limiting device are arranged at the bottom of the foaming bottom plate. According to the device, the pressing plate is arranged in the foaming cavity to limit a foaming forming product, the movable pressing plate control device is arranged at the top of the limiting cover shell, flexible adjustment can be achieved according to product requirements, foaming plates with different thicknesses can be produced conveniently, the foaming bottom plate can be controlled to ascend and descend through the lifting control device, and the production efficiency is improved. And the device is compact in structure, convenient to operate and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of foaming devices, and in particular to a foaming limiting device for a polyurethane low-pressure foaming machine. Background Technology

[0002] In the polyurethane foaming process, molds with fixed structures are mostly used, which makes it difficult to limit the foaming range. One mold can only produce foamed products of one specification, resulting in relatively limited functionality and hindering the reduction of production costs.

[0003] Patent application CN 219338333U discloses a foaming limiting device for an EPP foaming machine. The foaming limiting device includes a base plate, a limiting plate fixedly installed on the top of the base plate, and a limiting shell provided on the limiting plate; a piston plate, which is slidably installed in the limiting shell; a first screw, which is threadedly installed on the limiting shell, and the bottom end of the first screw is rotatably connected to the piston plate; an injection pipe, which is fixedly connected to the limiting plate; and an adjustment mechanism, which is disposed on the base plate.

[0004] The existing technology controls the lifting and lowering of the limiting shell through a control device set on the side. After a period of use, the structure is prone to displacement, and the stability of the device is poor.

[0005] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this utility model is to provide a foaming limiting device for a polyurethane low-pressure foaming machine. The device uses a pressure plate installed inside the foaming cavity to limit the foamed product. Furthermore, a movable pressure plate control device is provided on the top of the limiting cover, which can be flexibly adjusted according to product requirements, facilitating the production of foamed boards of different thicknesses. The foaming base plate can be raised and lowered by a lifting control device, making it easy to remove the foamed product from the foaming cavity. The device has a compact structure, is easy to operate, and is convenient to use.

[0007] The technical solution adopted in this utility model is:

[0008] The polyurethane low-pressure foaming machine foaming limiting device includes a limiting cover, a foaming base plate, and a base. The limiting cover is located above the foaming base plate, and the space between the limiting cover and the foaming base plate is the foaming cavity. The side of the limiting cover is fixed to the support base. A movable pressure plate is installed inside the limiting cover. A movable pressure plate control device is provided at the top of the limiting cover. A lifting control device and a limiting device are provided at the bottom of the foaming base plate.

[0009] By adopting the above structure, the device uses a pressure plate inside the foaming cavity to limit the foamed product. The movable pressure plate control device on the top of the limiting cover can be flexibly adjusted according to product requirements, making it easy to produce foamed boards of different thicknesses. The foaming base plate can be raised and lowered by a lifting control device, making it easy to remove the foamed product from the foaming cavity. The device has a compact structure, is easy to operate, and is convenient to use.

[0010] Preferably, a limiting baffle is provided on the outer side of the limiting cover on the foamed base plate, and the limiting baffle is attached to the outer wall of the limiting cover.

[0011] By adopting the above structure, the relative position of the foamed base plate and the upper limiting cover is stabilized during the up-and-down movement of the foamed base plate, resulting in better device stability.

[0012] Preferably, the control device for the movable pressure plate includes a lifting cylinder, a lifting rod, and a telescopic connecting rod. The lifting cylinder is fixed to the top of the limiting cover, the top of the lifting cylinder is connected to the lifting rod, and a telescopic connecting rod is provided next to the lifting cylinder. The tops of the lifting rod and the telescopic connecting rod are fixed by a linkage plate.

[0013] Preferably, the telescopic link is installed through the top of the limiting cover, and the bottom end of the telescopic link is connected and fixed to the movable pressure plate, which is equipped with a temperature monitor.

[0014] Preferably, there are two linkage plates, which are arranged in parallel and fixed to the top of the lifting rod and the telescopic connecting rod.

[0015] By adopting the above structure, the control device drives the telescopic connecting rod to move up and down by extending and retracting the lifting rod on the lifting cylinder, thereby controlling the position of the movable pressure plate inside the limiting cover and thus controlling the thickness of the foamed product in the foaming chamber. The device is convenient to use and easy to operate.

[0016] Preferably, the lifting control device at the bottom of the foamed base plate includes a support control cylinder and a support telescopic rod. The bottom of the support control cylinder is fixed on the base. Multiple support control cylinders are provided and are evenly arranged at the bottom of the foamed base plate. The support control cylinder is provided with a support telescopic rod that is fixedly connected to the bottom of the foamed base plate.

[0017] By adopting the above structure, the foaming base plate is raised and lowered by a support control cylinder. After the product is foamed, the foaming base plate is lowered to facilitate product removal.

[0018] Preferably, the limiting device at the bottom of the foamed base plate includes a limiting post and a limiting sleeve. The limiting sleeve is located at the center of the bottom of the foamed base plate, the limiting post is fixed on the base, and the limiting sleeve is fitted onto the limiting post.

[0019] By adopting the above structure, the foamed base plate is prevented from moving during lifting and lowering, thus avoiding affecting the use of the device and improving the stability of the device.

[0020] Preferably, the foamed base plate is provided with a feed inlet, which is connected to a feed pipe at the bottom of the foamed base plate, and a feed pump is provided on the feed pipe.

[0021] Compared with the prior art, this utility model has the following advantages:

[0022] 1. This utility model device sets a pressure plate inside the foaming cavity to limit the foamed product. The movable pressure plate control device on the top of the limiting cover can be flexibly adjusted according to product requirements, which is convenient for producing foamed boards of different thicknesses. The foaming base plate can be raised and lowered by the lifting control device, which makes it easy to take out the foamed product from the foaming cavity. The device has a compact structure, is easy to operate and use.

[0023] 2. This utility model device is equipped with a control device. By extending and retracting the lifting rod on the lifting cylinder, the telescopic connecting rod moves up and down, controlling the position of the movable pressure plate inside the limiting cover, thereby controlling the thickness of the foamed product in the foaming cavity. The device is convenient to use and easy to operate.

[0024] 3. The device of this utility model is equipped with a limiting device to prevent the foamed base plate from moving when it is raised and lowered, thus affecting the use of the device and improving the stability of the device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the foamed base plate of this utility model descending;

[0027] Figure 3 This is a schematic diagram of the movable pressure plate inside the limiting cover of this utility model;

[0028] Figure 4 This is a schematic diagram of the interior of the limiting cover of this utility model.

[0029] The components include: 1. Limiting cover; 2. Foamed base plate; 3. Base; 4. Support control cylinder; 5. Support telescopic rod; 6. Lifting cylinder; 7. Lifting rod; 8. Telescopic connecting rod; 9. Support seat; 10. Limiting post; 11. Limiting sleeve; 12. Linkage plate; 13. Movable pressure plate; 14. Limiting baffle; 15. Feed inlet; 16. Feed pipe; 17. Feed pump; 18. Temperature monitor. Detailed Implementation

[0030] like Figure 1-4As shown, the polyurethane low-pressure foaming machine foaming limiting device includes a limiting cover 1, a foaming base plate 2, and a base 3. The limiting cover 1 is located above the foaming base plate 2, and the space between the limiting cover 1 and the foaming base plate 2 is the foaming cavity. The side of the limiting cover 1 is fixed to the support base 9. A movable pressure plate 13 is installed inside the limiting cover 1. A control device for the movable pressure plate 13 is provided at the top of the limiting cover 1. A lifting control device and a limiting device are provided at the bottom of the foaming base plate 2. A feed inlet 15 is provided on the foaming base plate 2, and the feed inlet 15 is connected to a feed pipe 16 at the bottom of the foaming base plate 2. A feed pump 7 is provided on the feed pipe 16. The device uses a pressure plate inside the foaming cavity to limit the foamed product. The movable pressure plate 13 on the top of the limiting cover 1 can be flexibly adjusted according to product requirements, making it easy to produce foamed boards of different thicknesses. The foaming base plate 2 can be raised and lowered by a lifting control device, making it easy to remove the foamed product from the foaming cavity. The device has a compact structure, is easy to operate and use.

[0031] A limiting baffle 14 is provided on the outer side of the limiting cover 1 on the foamed base plate 2, and the limiting baffle 14 is attached to the outer wall of the limiting cover 1. During the up and down movement of the foamed base plate 2, the relative position of the foamed base plate 2 and the upper limiting cover 1 is stabilized, and the stability of the device is improved.

[0032] The control device for the movable pressure plate 13 includes a lifting cylinder 6, a lifting rod 7, and a telescopic connecting rod 8. The lifting cylinder 6 is fixed to the top of the limiting cover 1, and the top of the lifting cylinder 6 is connected to the lifting rod 7. The telescopic connecting rod 8 is located next to the lifting cylinder 6, and the tops of the lifting rod 7 and the telescopic connecting rod 8 are fixed together by a linkage plate 12. The telescopic connecting rod 8 passes through the top of the limiting cover 1, and its bottom end is connected and fixed to the movable pressure plate 13. A temperature monitor 18 is provided on the movable pressure plate 13. There are two linkage plates 12, which are arranged in parallel and fixed to the tops of the lifting rod 7 and the telescopic connecting rod 8. The control device moves the telescopic connecting rod 8 up and down by extending and retracting the lifting rod 7 on the lifting cylinder 6, thereby controlling the position of the movable pressure plate 13 inside the limiting cover 1, and thus controlling the thickness of the foamed product in the foaming chamber. The device is convenient to use and operate.

[0033] The lifting control device at the bottom of the foamed base plate 2 includes a support control cylinder 4 and a support telescopic rod 5. The bottom of the support control cylinder 4 is fixed to the base 3. Multiple support control cylinders 4 are provided and evenly distributed at the bottom of the foamed base plate 2. The support telescopic rod 5 is fixedly connected to the bottom of the foamed base plate 2 on the support control cylinder 4. The lifting of the foamed base plate 2 is controlled by the support control cylinder 4. After the product foaming is completed, the foamed base plate lowers to facilitate product removal.

[0034] The limiting device at the bottom of the foamed base plate 2 includes a limiting post 10 and a limiting sleeve 11. The limiting sleeve 11 is located at the center of the bottom of the foamed base plate 2, the limiting post 10 is fixed to the base 3, and the limiting sleeve 11 is fitted onto the limiting post 10. When the foamed base plate 2 is raised or lowered, it prevents the foamed base plate 2 from moving, which would affect the use of the device, and improves the stability of the device.

[0035] When using this device, the support control cylinder 4 raises the foaming base plate 2 to engage with the limiting cover 1. Depending on the thickness of the product, the lifting cylinder 6 controls the position of the movable pressure plate 13 within the limiting cover 1. The foaming material is fed from the feed pipe 16 at the bottom of the foaming base plate 2. The feed pump 7 on the feed pipe 16 controls the feeding speed. After the product has foamed and formed, the support control cylinder 4 controls the foaming base plate 2 to descend and remove the product. The device is easy to operate and use.

[0036] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model should be included within the scope of protection defined by the claims of the present utility model.

Claims

1. A polyurethane low-pressure foaming machine foaming limiting device, comprising a limiting cover, a foaming base plate, and a base, characterized in that: The limiting cover is located above the foamed base plate, and the space between the limiting cover and the foamed base plate is a foaming cavity. The side of the limiting cover is fixed to the support base. A movable pressure plate is installed inside the limiting cover. A movable pressure plate control device is provided at the top of the limiting cover. A lifting control device and a limiting device are provided at the bottom of the foamed base plate.

2. The polyurethane low-pressure foaming machine foaming limiting device according to claim 1, characterized in that: The foamed base plate has a limiting baffle on the outside of the limiting cover, and the limiting baffle is attached to the outer wall of the limiting cover.

3. The polyurethane low-pressure foaming machine foaming limiting device according to claim 1, characterized in that: The control device for the movable pressure plate includes a lifting cylinder, a lifting rod, and a telescopic connecting rod. The lifting cylinder is fixed to the top of the limiting cover, and the top of the lifting cylinder is connected to the lifting rod. A telescopic connecting rod is provided next to the lifting cylinder, and the tops of the lifting rod and the telescopic connecting rod are fixed by a linkage plate.

4. The polyurethane low-pressure foaming machine foaming limiting device according to claim 3, characterized in that: The telescopic link is installed through the top of the limiting cover, and the bottom end of the telescopic link is connected and fixed to the movable pressure plate, which is equipped with a temperature monitor.

5. The polyurethane low-pressure foaming machine foaming limiting device according to claim 3, characterized in that: The linkage plate consists of two pieces, which are arranged in parallel and fixed to the top of the lifting rod and the telescopic connecting rod.

6. The polyurethane low-pressure foaming machine foaming limiting device according to claim 1, characterized in that: The lifting control device at the bottom of the foamed base plate includes a support control cylinder and a support telescopic rod. The bottom of the support control cylinder is fixed on the base. There are multiple support control cylinders, which are evenly arranged at the bottom of the foamed base plate. The support control cylinder is equipped with a support telescopic rod that is fixedly connected to the bottom of the foamed base plate.

7. The polyurethane low-pressure foaming machine foaming limiting device according to claim 1, characterized in that: The limiting device at the bottom of the foamed base plate includes a limiting post and a limiting sleeve. The limiting sleeve is located at the center of the bottom of the foamed base plate, the limiting post is fixed on the base, and the limiting sleeve is fitted onto the limiting post.

8. The polyurethane low-pressure foaming machine foaming limiting device according to claim 1, characterized in that: The foamed base plate is provided with a feed inlet, which is connected to a feed pipe at the bottom of the foamed base plate, and a feed pump is provided on the feed pipe.

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