Modularized mold for producing PVC (polyvinyl chloride) foam board by variable foaming ratio mold pressing method

Abstract

The utility model belongs to the field of mould pressing foam board moulds, and discloses a modularized mould for producing a PVC (polyvinyl chloride) foam board by a variable foaming ratio mould pressing method, which comprises a fixed bottom plate, a modularized template and a mould top plate, the mould fixed bottom plate and the modularized template are mechanically connected to form a lower mould of the mould, and the lower mould of the mould and the mould top plate form a mould cavity together. And forming the foaming mold. According to the utility model, the mold made of the foaming material is subjected to modular structural design, so that the mold can be quickly and modularly assembled and replaced on the press vulcanizer, the mold does not need to be repeatedly positioned and debugged, the production efficiency and the utilization rate of the mold are improved, the cost is saved, and the template is convenient to maintain and transport after being disassembled.

Description

Technical Field

[0001] The utility model belongs to the field of molded foaming boards, and particularly relates to a modular mold for producing PVC foaming boards by a variable foaming ratio molding method. Background Art

[0002] Foaming materials are widely used in daily life, building materials, and transportation. Among them, the method of using a flat-plate vulcanizing machine to adopt molding and heating foaming is widely used, but they all need to be designed into a mold with a fixed shape. After the shape of the fixed-shape foaming mold is fixed, the foaming ratio of the foam material is generally determined accordingly. In most cases, one style and shape corresponds to a set of molds, which has a low utilization rate and occupies a large amount of space and resources. The utility model with the announcement authorization number CN 202922851 U discloses a foaming mold with a variable foaming ratio, including a mold assembly and a demolding assembly, the mold assembly includes a mold base, a mold top cover and a mold assembly piece embedded between the mold base and the mold top cover, the mold assembly piece is connected between the mold base and the mold top cover by a guide rod to form a variable mold cavity structure; the demolding assembly includes a demolding base, and a demolding rod hole provided on the demolding base for facilitating the installation of a demolding rod. This utility model is not suitable for use in compression foaming molds on flat-plate vulcanizing machine equipment. Due to the structural characteristics of the flat-plate vulcanizing machine, the contact surface between the compression foaming mold fixed on the hot plate of the flat-plate vulcanizing machine and the hot plate must be flat. Otherwise, during the clamping process of the flat-plate vulcanizing machine, the huge clamping force of the hydraulic cylinder will cause damage to the mold or equipment. In addition, to disassemble and replace the mold, the mold must be removed from the molding machine, and the mold assembly can only be disassembled using the demoulding base and the demoulding rod. The reassembled mold needs to be repositioned and debugged, which is time-consuming and labor-intensive. Summary of the Invention

[0003] In view of the technical problems existing in the current prior art, the purpose of this utility model is to provide a modular mold for producing PVC foam boards by a variable foaming ratio molding method. The technical solutions adopted by this utility model to solve the above technical problems are as follows:

[0004] A modular mold for producing PVC foam boards using a variable foaming ratio molding method includes a fixed base plate, modular templates, and a mold top plate. The mold fixed base plate and the modular templates are mechanically connected to form a lower mold. The lower mold and the mold top plate together form a mold cavity, forming a foaming mold. The variable foaming ratio can be achieved by changing the mold cavity size by changing the number of modular templates.

[0005] The above-mentioned modular mold for producing PVC foam boards by a variable foaming ratio molding method, the mechanical connection method of the modular template can be a positioning connection using a sub-buckle method of positioning grooves and positioning protrusions, or a positioning connection using a positioning pin method.

[0006] The modular mold for producing PVC foam boards using the variable foaming ratio molding method is connected to the mold base plate by bolt connection.

[0007] The modular mold for producing PVC foam boards by the variable foaming ratio molding method has parting grooves arranged around the modular template.

[0008] The above-mentioned modular mold for producing PVC foam boards by a variable foaming ratio molding method has an integrated fixed base with a fixed base positioning groove on it. Multiple fixed base positioning grooves can be set, and each fixed positioning groove corresponds to a modular template of a certain specification.

[0009] Modular templates of different specifications and sizes can be positioned separately, and are provided with long holes for bolt connection corresponding to the mounting holes of the hot plate of the flat vulcanizer.

[0010] The above-mentioned modular mold for producing PVC foam boards by a variable foaming ratio molding method, wherein the modular template has modular template positioning grooves and modular template positioning protrusions of uniform specifications, the interior of which is a mold cavity, the modular template positioning grooves and the fixed base plate positioning grooves have the same size specifications, the modular templates are interchangeable, and the modular templates are provided with quick-release grooves to facilitate quick disassembly of the modular templates.

[0011] The above-mentioned modular mold for producing PVC foam boards by a variable foaming ratio molding method, wherein the sealing ring is made of brass or copper and has multiple grooves to achieve multi-level sealing.

[0012] The modular mold for producing PVC foam boards by the variable foaming ratio molding method has a mold top plate with a thickness of 5-8 mm and a plurality of long holes for bolt connection with the hot plate of the flat vulcanizer.

[0013] The modular mold for producing PVC foam boards by the variable foaming ratio molding method mentioned above has the positioning grooves and positioning protrusions on the side for positioning connection, and there is a gap of 0.2-0.5mm between the positioning protrusions and the positioning grooves to ensure that the entire mold can fit completely after assembly.

[0014] Beneficial effects:

[0015] The utility model adopts a modular structure design for the mold of the foam material, which can be quickly assembled in a modular manner during use, so that the mold cavity is variable. The mold assembly can be quickly modularized and replaced on a multi-layer flat vulcanizer without repositioning and debugging the mold, saving time for repeated installation and debugging of the mold, improving production efficiency and mold utilization, and saving costs. The mold has the characteristic of a variable mold cavity, so the foaming ratio of the foam material can be controlled. The mold is modularly designed and the mold cavity size can be adjusted according to needs. After assembly, it becomes a whole. The template template can be disassembled for easy maintenance and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the decomposition structure in Example 1 of the present utility model

[0017] Figure 2 This is a schematic diagram of the assembly structure in Example 1 of the present utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of Example 1 of the present utility model;

[0019] Figure 4 This is a schematic diagram of the fixed base plate in Example 1 of the present utility model;

[0020] Figure 5 This is a schematic diagram of a modular template in Example 1 of the present utility model;

[0021] Figure 6 This is a cross-sectional diagram of a modular template in Example 1 of the present utility model;

[0022] Figure 7 This is a schematic diagram of a fixed top plate of the utility model;

[0023] Figure 8 This is a schematic diagram of the exploded structure of Example 2 of the present utility model;

[0024] Figure 9 This is a cross-sectional schematic diagram of Example 2 of the present utility model;

[0025] Figure 10 This is a schematic diagram of a fixed base plate in Example 2 of the present utility model;

[0026] Figure 11 This is a cross-sectional schematic diagram of the fixed base plate in Example 2 of the present utility model;

[0027] Figure 12 This is a schematic diagram of a modular template in Example 2 of the present utility model;

[0028] Figure 13 This is a schematic cross-sectional view of a modular template in Example 2 of the present utility model;

[0029] Figure 14 This is a schematic diagram of the sealing ring in Example 2 of the present utility model;

[0030] Figure 15 This is a schematic cross-sectional view of the sealing ring in Example 2 of the present utility model;

[0031] Figure 16 This is a schematic diagram of the exploded structure of Example 3 of the present utility model;

[0032] Figure 17 This is a schematic diagram of the assembly structure of the lower mold of the mold in Example 3 of the present utility model;

[0033] Figure 18 This is a cross-sectional schematic diagram of Example 3 of the present utility model;

[0034] Figure 19 This is a schematic diagram of a fixed base plate in Example 3 of the present utility model;

[0035] Figure 20 This is a schematic diagram of a modular template in Example 3 of the present utility model;

[0036] In the figure, 1 is a fixed base plate, 2 is a modular template, 3 is a sealing ring, 4 is a mold top plate, 5 is a fixing bolt, 6 is a fixed base plate positioning groove, 7 is a modular template positioning groove, 8 is a modular template positioning protrusion, 9 is a sealing groove, 10 is a connecting countersunk hole, 11 is a connecting threaded hole, 12 is a top plate connecting long hole, 13 is a fixed base plate connecting long hole, and 14 is a parting groove. DETAILED DESCRIPTION

[0037] In order to describe the technical solution of the present invention in detail and facilitate those skilled in the art to more accurately understand the technical principles and technical means adopted by the present invention, the technical solution of the present invention is described in detail below in combination with the form of embodiments.

[0038] Example 1

[0039] Refer to the attached Figure 1-7The present invention comprises a fixed base plate 1, a modular template 2, and a mold top plate 4. The fixed base plate 1 is provided with a fixed base plate positioning groove 6, and the modular template 2 is provided with a modular template positioning groove 7 and a modular template positioning protrusion 8. The present invention can be assembled as a whole and then installed on a flat vulcanizer. Alternatively, modular assembly can be performed on a flat vulcanizer. The first installation method is used for initial installation. The second installation method is used when the mold cavity size needs to be changed to change the foaming ratio. During installation, the fixed base plate 1 is first installed by connecting the connecting slots 13 to the corresponding connecting holes on the hot plate of the flat vulcanizer. Then, the modular template is installed and positioned using the modular template positioning protrusions 8 and the fixed base plate positioning grooves 6 on the fixed base plate 1. The other modular templates 2 are installed in this manner to form the mold lower mold. The mold top plate is connected to the corresponding connecting holes on the hot plate of the flat vulcanizer via the top plate connecting slots. The mold lower mold and the mold top plate together form the mold cavity, forming a foaming mold. By changing the number of modular templates, the mold cavity size can be changed to achieve a variable foaming ratio.

[0040] Example 2

[0041] Refer to the attached Figure 8-15 The present invention includes a fixed base plate 1, a modular template 2, a sealing ring 3, a mold top plate 4, and a fixing bolt 5. The fixed base plate 1 is provided with a fixed base plate positioning groove 6 and a connecting threaded hole 11, the modular template 2 is provided with a modular template positioning groove 7, a modular template positioning protrusion 8, and a connecting countersunk hole 9, and the sealing ring 3 is provided with multiple sealing grooves 9. The present invention can be assembled as a whole module and then installed on a flat vulcanizer, or it can be assembled modularly on a flat vulcanizer. The first installation method is used for the first installation, and the second installation method is used when the mold cavity size needs to be changed or the foaming ratio needs to be changed. Alternatively, the second installation method can be used for both installations. During installation, first connect and position the fixed base plate 1 by connecting the long holes with the corresponding connection holes on the hot plate, then install the modular template, and use the modular template positioning protrusions 8 and the fixed base plate positioning grooves 6 on the fixed base plate 1 for positioning. Similarly, install other modular templates 2, and then install the sealing ring 3 into the positioning groove 6 of the top modular template, with the sealing ring sealing groove 9 facing upward. Finally, use the fixing bolts 5 to pass through the connection holes of the modular template and connect the entire set of molds into an integral mold lower mold through the connecting threaded holes on the fixed base plate 1. The mold top plate is connected to the corresponding connection holes on the bottom of the hot plate by connecting the long grooves. The mold lower mold and the mold top plate together form a mold cavity, forming a foaming mold. By changing the number of modular templates to change the mold cavity size, a variable foaming ratio can be achieved.

[0042] Example 3

[0043] Refer to the attached Figure 16-20The utility model includes a fixed base plate 1, a modular template 2, a sealing ring 3, and a mold top plate 4. The fixed base plate 1 is provided with a plurality of fixed base plate positioning grooves 6, and the modular template 2 is provided with a modular template positioning groove 7, a modular template positioning protrusion 8 and a parting groove 14. The plurality of fixed base plate positioning grooves 6 provided on the fixed base plate 1 of the utility model can be combined with modular templates of different specifications and sizes to achieve the purpose of using a fixed base plate to match multiple modular templates, thereby forming mold cavity sizes of multiple specifications and sizes. The utility model is provided with a parting groove 14 on the modular template 2, and the assembled mold can be quickly disassembled using a flat crowbar. The utility model can be installed on a flat vulcanizer after being assembled in a modular manner as a whole, or it can be assembled in a modular manner on a flat vulcanizer. The first installation method is used for the first installation, and the second installation method is used when the mold cavity size needs to be changed to change the foaming ratio. The second installation method can also be used. During installation, first connect and position the fixed base plate 1 by connecting the long holes 13 with the corresponding connection holes on the hot plate of the flat vulcanizer. Then install the modular template and use the modular template positioning protrusions 8 and the fixed base plate positioning grooves 6 on the fixed base plate 1 for positioning. Similarly, install other modular templates 2 to form the mold lower mold. The mold top plate is connected to the corresponding connection holes on the bottom of the flat vulcanizer hot plate through the long holes on the top plate. The mold lower mold and the mold top plate together form the mold cavity, forming a foaming mold. By changing the number of modular templates, the mold cavity size can be changed to achieve a variable foaming ratio.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the scope of protection of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, different technical personnel in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A modular mold for producing PVC foam boards by a variable foaming ratio molding method, comprising a fixed bottom plate, a template, a mold top plate, and a mold fixed bottom plate, characterized in that The template is a modular template, which is mechanically connected to form a lower mold. The lower mold and the mold top plate together form a mold cavity to form a foaming mold.

2. A modular mold for producing PVC foam boards by a variable foaming ratio molding method according to claim 1, characterized in that The mechanical connection between the mold fixed base plate and the modular template is achieved by connecting the positioning grooves and the positioning protrusions with sub-buttons or by positioning pins.

3. The modular mold for producing PVC foam boards by a variable foaming ratio molding method according to claim 1, characterized in that The modular template is connected to the mold base plate by bolt connection.

4. A modular mold for producing PVC foam boards by a variable foaming ratio molding method according to any one of claims 1 to 3, characterized in that A sealing ring is arranged on the parting surface and is made of brass or copper.

5. The modular mold for producing PVC foam boards by a variable foaming ratio molding method according to claim 4, characterized in that The sealing ring arranged on the parting surface is provided with a plurality of grooves.

6. A modular mold for producing PVC foam boards by a variable foaming ratio molding method according to claim 1, 2, 3 or 5, characterized in that Parting grooves are provided around the modular template.

7. A modular mold for producing PVC foam boards by a variable foaming ratio molding method according to claim 4, characterized in that Parting grooves are provided around the modular template.

8. The modular mold for producing PVC foam boards by a variable foaming ratio molding method according to claim 1, characterized in that A plurality of positioning grooves are arranged on the fixed bottom plate.

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