A pneumatic demoulding and removing device for foam products

Abstract

The present invention relates to a pneumatic demoulding and removing device for foam products, comprising an upper mold and a lower mold. The device also includes a first detection unit for detecting whether the upper mold has reached the desired position, as well as a cylinder and a support member. The lower mold is provided with a first airflow channel arranged along the product ejection direction, a second airflow channel arranged to intersect with the first airflow channel, and an air inlet. One end of the first airflow channel is connected to the product groove. The support member is inserted into the first airflow channel and slides along the first airflow channel under the action of the cylinder output end. One end of the second airflow channel is connected to the air inlet, and the other end is connected to the first airflow channel. The connection between the second airflow channel and the first airflow channel is blocked by the support member when the cylinder is ejected. Compared with the prior art, the present invention can realize the demoulding of the product by using airflow by providing two airflow channels and a support member, thereby improving the product yield, solving the problem of hot hands when removing the product, and reducing labor intensity.

Description

Technical Field

[0001] The invention relates to the field of foaming molds, in particular to a pneumatic demoulding and taking-out device for foaming products. Background Art

[0002] Foam products are made by mixing two liquid raw materials in a specific ratio and pouring the mixture into a heated mold to form a foamed, solid product. Because the raw materials in the foaming process are liquids, they are heated to produce a chemical reaction that solidifies the product into a solid, soft product. Therefore, mold release requirements for foam products are relatively low, requiring no draft angle and even allowing for undercuts. Therefore, proper part removal is crucial.

[0003] The mold consists of an upper mold and a lower mold. The structure of the lower mold is as follows Figure 1 As shown, during the entire production process, the mold is in a heated state and the temperature is around 90 degrees. Therefore, after the parts are foamed and molded, workers will often touch the mold when manually removing the parts, which will burn their hands and easily tear the parts. The grip on the parts when manually removing the parts will cause deformation of the product. Summary of the Invention

[0004] The purpose of the present invention is to provide a pneumatic demoulding and taking-out device for foam products. By setting up two air flow channels and a support member, the air flow can be used to realize the demoulding of the product, thereby improving the product yield, solving the problem of scalding when taking out the product, and reducing labor intensity.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A pneumatic demoulding and removing device for foaming products includes an upper mold and a lower mold. The device also includes a first detection unit for detecting whether the upper mold has opened and is in place, as well as a cylinder and a support member. The lower mold is provided with a first air flow channel arranged along the product ejection direction, a second air flow channel arranged to intersect with the first air flow channel, and an air inlet. One end of the first air flow channel is connected to the product groove. The support member is inserted into the first air flow channel and slides along the first air flow channel under the action of the cylinder output end. One end of the second air flow channel is connected to the air inlet, and the other end is connected to the first air flow channel. The connecting port between the second air flow channel and the first air flow channel is blocked by the support member when the cylinder is ejected.

[0007] The axial cross-section of the support member is cross-shaped and comprises a rod body matching the inner diameter of the first air flow channel and a stopper arranged around the rod body.

[0008] The first air flow channel and the second air flow channel are arranged vertically.

[0009] The cross-sectional area of ​​the first air flow channel is smaller than that of the second air flow channel.

[0010] The cross-sectional area of ​​the first air flow channel is equal to that of the second air flow channel

[0011] A solenoid valve is provided at the entrance of the air inlet.

[0012] The device further includes a controller, the first detection unit is a position switch, and the first detection unit, the cylinder and the solenoid valve are all connected to the controller.

[0013] The controller is a PLC controller.

[0014] The lower mold is also provided with a cylinder groove, which is communicated with the end of the first air flow channel.

[0015] The included angle between the first air flow channel and the ejection direction of the cylinder is an acute angle.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) By providing two airflow channels and a support member, airflow can be used to demould the product, thereby improving the product yield, solving the problem of being hot when removing the product, and reducing labor intensity.

[0018] 2) The structure of the specially designed support member can form a good match with the first air flow channel, while avoiding overload of the cylinder stroke and improving the product yield.

[0019] 3) The first airflow channel and the second airflow channel are arranged vertically, so that after the airflow bifurcates, the upward and downward airflows in the first airflow channel can be more balanced, thereby improving the stability of the airflow during the demoulding process.

[0020] 4) The angle between the first airflow channel and the cylinder ejection direction is an acute angle, which reduces the air resistance of the upward airflow and can reduce the energy consumption of the air supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the lower mold part in the prior art;

[0022] Figure 2 It is a structural schematic diagram of the cylinder of the present invention when it is in a retracted state;

[0023] Figure 3 This is a schematic diagram of the structure of the cylinder of the present invention when it is retracted and ejected.

[0024] Figure 4 is a structural diagram of a support member;

[0025] Figure 5 This is the architecture diagram of the electrical control part;

[0026] Figure 6 is a schematic diagram of a first detection unit in one embodiment;

[0027] Among them: 1. lower mold, 2. product, 3. support, 4. cylinder, 5. solenoid valve, 6. position switch, 7. controller, 21. air inlet, 22. first air flow channel, 23. second air flow channel. DETAILED DESCRIPTION

[0028] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0029] A pneumatic demoulding and taking-out device for foam products 2, comprising an upper mold and a lower mold 1, such as Figure 2 and Figure 3 As shown, the device also includes a first detection unit for detecting whether the upper mold opening action is in place, as well as a cylinder 4 and a support member 3. The lower mold 1 is provided with a first air flow channel 22 arranged along the ejection direction of the product 2, a second air flow channel 23 arranged to intersect with the first air flow channel 22, and an air inlet 21. One end of the first air flow channel 22 is connected to the product 2 groove, and the support member 3 is inserted into the first air flow channel 22 and slides along the first air flow channel 22 under the action of the output end of the cylinder 4. One end of the second air flow channel 23 is connected to the air inlet 21, and the other end is connected to the first air flow channel 22, and the connecting port between the second air flow channel 23 and the first air flow channel 22 is blocked by the support member 3 when the cylinder 4 is ejected.

[0030] An air-top air inlet path is added to the original lower mold 1. By setting two air flow channels and a support 3, air flow can be used to demould the product 2, thereby improving the yield of the product 2, solving the problem of being hot when removing the product, and reducing labor intensity.

[0031] like Figure 4 As shown, the axial cross-section of the support member 3 is cross-shaped, including a rod body that matches the inner diameter of the first air flow channel 22 and a block arranged around the rod body. The structure of the special support member 3 can form a better fit with the first air flow channel 22, while avoiding stroke overload of the cylinder 4 and improving the yield of the product 2.

[0032] In some embodiments, the first airflow channel 22 is formed at an acute angle with the ejection direction of the cylinder 4, reducing air resistance to the upward airflow and thus lowering air supply energy consumption. However, in this embodiment, the first airflow channel 22 and the second airflow channel 23 are arranged perpendicularly. This allows for a more balanced upward and downward airflow in the first airflow channel 22 after the airflow bifurcates, thereby improving airflow stability during the demolding process.

[0033] In some embodiments, the cross-sectional area of ​​the first air flow channel 22 is smaller than that of the second air flow channel 23 , so as to increase the thrust during the demolding process. However, in this embodiment, the cross-sectional area of ​​the first air flow channel 22 is equal to that of the second air flow channel 23 .

[0034] In this embodiment, a solenoid valve 5 is provided at the entrance of the air inlet 21. Figure 5 As shown, the device also includes a controller 7, the first detection unit is a position switch 6, the first detection unit, the cylinder 4 and the solenoid valve 5 are all connected to the controller 7, and the controller 7 is a PLC controller 7, as shown Figure 6 As shown, the position switch 6 can be set below the fixed plate at the top of the upper mold. Therefore, after the upper mold completes the mold opening, it will drive the upper mold to move upward under the action of the traction rod, and the top of the upper mold touches the position switch 6. The position switch 6 is turned on, and the PLC controller 7 receives a high-level signal as a signal that the upper mold opening action is in place. Therefore, the PLC controller 7 controls the cylinder 4 to retract and opens the solenoid valve 5. The air inlet 21 is ventilated, and the air flow enters the first air flow channel 22 and pushes the product 2 upward by air pressure. After the removal action is completed, the air inlet 21 is closed, the cylinder 4 is pushed out, and the production of the next mold continues.

Claims

1. A pneumatic demoulding and removing device for foam products, comprising an upper mold and a lower mold, characterized in that: The foam product is a solid soft product. The device further includes a first detection unit for detecting that the upper mold has reached the desired position, as well as a cylinder and a support member. The lower mold is provided with a first air flow channel arranged along the ejection direction of the foam product, a second air flow channel arranged to intersect with the first air flow channel, and an air inlet. One end of the first air flow channel is connected to the product groove. The bottom of the foam product is inserted into the first air flow channel. The support member is inserted into the first air flow channel and slides along the first air flow channel under the action of the cylinder output end. One end of the second air flow channel is connected to the air inlet, and the other end is connected to the first air flow channel. The connecting port between the second air flow channel and the first air flow channel is blocked by the support member when the cylinder is ejected. The support member has a cross-shaped axial section and includes a rod body matching the inner diameter of the first airflow channel and a stopper arranged around the rod body; The cross-sectional area of ​​the first air flow channel is smaller than that of the second air flow channel.

2. A pneumatic demoulding and removing device for foam products according to claim 1, characterized in that: The first air flow channel and the second air flow channel are arranged vertically.

3. The pneumatic demoulding and removing device for foam products according to claim 1, characterized in that: A solenoid valve is provided at the entrance of the air inlet.

4. A pneumatic demoulding and removing device for foam products according to claim 3, characterized in that: The device further includes a controller, the first detection unit is a position switch, and the first detection unit, the cylinder and the solenoid valve are all connected to the controller.

5. A pneumatic demoulding and removing device for foam products according to claim 4, characterized in that: The controller is a PLC controller.

6. The pneumatic demoulding and removing device for foam products according to claim 1, characterized in that: The lower mold is also provided with a cylinder groove, which is communicated with the end of the first air flow channel.

7. The pneumatic demoulding and removing device for foam products according to claim 1, characterized in that: The included angle between the first air flow channel and the ejection direction of the cylinder is an acute angle.

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