Manufacturing mold and forming method of thermoplastic elastomer special-shaped hollow integral product

Abstract

The present invention discloses a manufacturing mold and forming method for a thermoplastic elastomer special-shaped hollow integral product, the manufacturing mold comprising: a body, a special-shaped hollow cavity is defined in the body, and the two ends of the body are open; a mold plugging cover, the mold plugging covers are two, and the two mold plugging covers are respectively installed at the open ends of the two sides of the body; a fixing device, the fixing device is arranged in the hollow cavity, and the fixing device is used to fix the thermoplastic elastomer; an inflation tube, the inflation tube passes through one of the mold plugging covers and extends into the thermoplastic elastomer. The manufacturing mold is simple to operate, and the structure of the manufacturing mold is simple, easy to use, and has low energy consumption and equipment investment.

Description

Technical Field

[0001] The invention relates to the technical field of hollow plastic product forming, in particular to a manufacturing mold for thermoplastic elastomer special-shaped hollow integral products, and an inflation forming method for thermoplastic elastomer special-shaped hollow integral products using the manufacturing mold. Background Art

[0002] In the related art, the methods for forming hollow plastic products generally include injection molding, slush molding, winding molding, blow molding, thermoforming, rotational molding, compression molding, etc. The mainstream molding process methods are blow molding, rotational molding and double-layer thermoforming. However, the above molding methods have the problems of complex process, high energy consumption and high equipment investment for the production of thin-walled tubular special-shaped integral molded parts. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a manufacturing mold for a thermoplastic elastomer special-shaped hollow integral product, which is easy to operate, has a simple structure, is convenient and quick to use, consumes less energy, and requires less equipment investment.

[0004] Another object of the present invention is to provide a method for inflation forming of thermoplastic elastomer special-shaped hollow integral products.

[0005] According to the first aspect of the present invention, a manufacturing mold for a thermoplastic elastomer special-shaped hollow integral product comprises: a main body, a special-shaped hollow cavity is defined in the main body, and both ends of the main body are open; a mold plugging cover, the mold plugging covers are two, and the two mold plugging covers are respectively installed at the open ends on both sides of the main body; a fixing device, the fixing device is arranged in the hollow cavity, and the fixing device is used to fix the thermoplastic elastomer; an inflation tube, the inflation tube passes through one of the mold plugging covers and extends into the thermoplastic elastomer.

[0006] According to the manufacturing mold for the thermoplastic elastomer special-shaped hollow integral product according to the embodiment of the present invention, since the manufacturing mold for the thermoplastic elastomer special-shaped hollow integral product according to the embodiment of the present invention only needs to fix the thermoplastic elastomer by a fixing device and seal the inside of the thermoplastic elastomer, and then put the thermoplastic elastomer equipped with the fixing device into the manufacturing mold, the thermoplastic elastomer can be inflated and formed. The whole process requires simple equipment, low investment, reduced manpower and material consumption, and less energy loss. The process is simple and easy to operate.

[0007] In addition, the manufacturing mold for thermoplastic elastomer special-shaped hollow integral products according to the present invention may also have the following additional technical features:

[0008] In some embodiments of the present invention, the mold plugging cover is detachably connected to the body.

[0009] In some embodiments of the present invention, a first through hole is formed on one of the mold plugging covers, and the inflation tube is passed through the first through hole.

[0010] In some embodiments of the present invention, the fixing device includes: an inner blocking cover, wherein the inner blocking covers are two and are arranged opposite to each other, and the two ends of the thermoplastic elastomer are installed between the two inner blocking covers, and a second through hole is opened on one of the inner blocking covers, and the first through hole is opposite to the second through hole, and the inflation tube passes through the first through hole and the second through hole in sequence and then extends into the thermoplastic elastomer.

[0011] In some embodiments of the present invention, the fixing device further includes: an outer clamping ring, which includes two outer clamping rings and are respectively mounted on the outside of the two inner plugging covers, and the two ends of the thermoplastic elastomer are clamped between the corresponding inner plugging covers and the outer clamping rings.

[0012] In some embodiments of the present invention, a radial dimension of the outer clamping ring is smaller than a radial dimension of the hollow cavity.

[0013] In some embodiments of the present invention, the outer peripheries of the two outer clamping rings are in abutment engagement with the inner surface of the hollow cavity.

[0014] According to the second aspect of the present invention, the inflation forming method for thermoplastic elastomer special-shaped hollow integral products includes the following steps: installing the thermoplastic elastomer on the fixing device; placing the fixing device with the thermoplastic elastomer installed in the hollow cavity of the main body; using the mold plug to seal the open ends on both sides of the main body; filling the thermoplastic elastomer with gas through the inflation tube to inflate the thermoplastic elastomer into a shape corresponding to the hollow cavity; placing the mold and the thermoplastic elastomer together in a heating box, heating and cooling to form.

[0015] According to the second embodiment of the present invention, the method for forming a thermoplastic elastomer hollow integral product by inflation is implemented by using the manufacturing mold for the thermoplastic elastomer hollow integral product by the first embodiment. The method can realize inflation forming of the thermoplastic elastomer by a simple structure, with low resource consumption and simple operation.

[0016] In some embodiments of the present invention, the body and the thermoplastic elastomer are placed together in a heating box and heated at a predetermined temperature, wherein the predetermined temperature ranges from 70°C to 110°C.

[0017] In some embodiments of the present invention, the mold and the thermoplastic elastomer are placed together in a heating box, heated, and kept warm for a predetermined time, and then the body and the thermoplastic elastomer are taken out of the heating box, the pressure is released, and the air is released to take out the molded product.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a three-dimensional diagram of a manufacturing mold according to an embodiment of the present invention;

[0021] Figure 2 is a cross-sectional view of a manufacturing mold according to an embodiment of the present invention;

[0022] Figure 3 is a structural diagram of a thermoplastic elastomer and a fixing device according to an embodiment of the present invention;

[0023] Figure 4 is an installation diagram of a thermoplastic elastomer placed inside a manufacturing mold according to an embodiment of the present invention;

[0024] Figure 5 is a diagram of thermoplastic elastomer inflation molding according to an embodiment of the present invention;

[0025] Figure 6 is a heating setting diagram according to an embodiment of the present invention;

[0026] Figure 7 is a structural diagram of inflation molding according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] Thermoplastic elastomer 100;

[0029] Manufacturing mold 200;

[0030] Body 1; special-shaped hollow cavity 11;

[0031] Mold plugging cover 2; first through hole 21;

[0032] Fixing device 3; inner plugging cover 31; second through hole 311; outer clamping ring 32;

[0033] Inflatable tube 4;

[0034] Heating box 300. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Reference below Figure 1-Figure 7 A mold 200 for manufacturing a thermoplastic elastomer 100 special-shaped hollow integral product according to an embodiment of the present invention is described.

[0039] like Figure 1-Figure 7 As shown, a mold 200 for manufacturing a thermoplastic elastomer 100 special-shaped hollow integral product comprises: a main body 1, a mold plugging cover 2, a fixing device 3 and an inflation tube 4.

[0040] like Figure 1-Figure 2 As shown, a special-shaped hollow cavity 11 is defined in the body 1, and both ends of the body 1 are open.

[0041] Specifically, a certain space is defined inside the body 1 of the manufacturing mold 200, namely, a special-shaped hollow cavity 11, and both ends of the body 1 are open.

[0042] like Figure 1-Figure 2 As shown, further, there are two mold plugging covers 2, and the two mold plugging covers 2 are respectively installed at the open ends on both sides of the main body 1, that is, the manufacturing mold 200 includes two mold plugging covers 2, and the two mold plugging covers 2 are installed at the open openings at both ends of the main body 1, thereby the open openings at both ends of the main body 1 of the manufacturing mold 200 can be sealed.

[0043] like Figure 4 As shown, the fixing device 3 is disposed in the special-shaped hollow cavity 11, and the fixing device 3 is used to fix the thermoplastic elastomer 100. The fixing device 3 is installed on the thermoplastic elastomer 100, and the fixing device 3 is placed inside the special-shaped hollow cavity 11. Thus, the thermoplastic elastomer 100 can be fixed by the fixing device 3, so as to be conveniently placed inside the body 1 of the manufacturing mold 200.

[0044] like Figure 4 As shown, the inflation tube 4 passes through one of the mold plugging covers 2 and extends into the thermoplastic elastomer 100 .

[0045] Specifically, the inflation tube 4 cooperates with a mold plugging cover 2, that is, the inflation tube 4 is inserted into a mold plugging cover 2, and the inflation tube 4 passes through the mold plugging cover 2, and then the inflation tube 4 extends into the thermoplastic elastomer 100 placed inside the main body 1 of the manufacturing mold 200.

[0046] According to the manufacturing mold 200 for the special-shaped hollow integral product of the thermoplastic elastomer 100 according to the embodiment of the first aspect of the present invention, since the manufacturing mold 200 for the special-shaped hollow integral product of the thermoplastic elastomer 100 according to the embodiment of the present invention only needs to fix the thermoplastic elastomer 100 by the fixing device 3 and seal the inside of the thermoplastic elastomer 100, and then put the thermoplastic elastomer 100 equipped with the fixing device 3 into the manufacturing mold 200, the thermoplastic elastomer 100 can be inflated. The whole process requires simple equipment, low investment, reduced manpower and material consumption, and less energy loss. The process is simple and easy to operate.

[0047] like Figure 1-Figure 7 As shown, the mold plugging cover 2 is detachably connected to the body 1 .

[0048] Specifically, the connection between the mold plugging cover 2 and the main body 1 is a detachable connection, that is, the mold plugging cover 2 and the main body 1 can be disassembled and assembled.

[0049] Optionally, the detachable connection method may be a snap connection, a threaded connection, a plug connection, a key connection or a pin connection, etc.

[0050] That is to say, the mold plug cover 2 and the main body 1 can be connected by means of a snap and a slot, a threaded connection with a bolt and a nut, or a plug-in connection, a keyway connection, a pin connection, etc.

[0051] like Figure 1-Figure 7 As shown, a mold plugging cover 2 is provided with a first through hole 21 , and an inflation tube 4 is passed through the first through hole 21 .

[0052] Specifically, the manufacturing mold 200 is provided with two mold plugging covers 2 , and one of the mold plugging covers 2 is provided with a first through hole 21 , so that the inflation tube 4 can be plugged into the mold plugging cover 2 by cooperating with the first through hole 21 .

[0053] That is to say, through the first through hole 21, the inflation tube 4 can pass through the mold plugging cover 2 and be connected to the thermoplastic elastomer 100 placed inside the main body 1, so that the interior of the thermoplastic elastomer 100 can be inflated, so that the thermoplastic elastomer 100 can expand and fit with the inner surface of the special-shaped hollow cavity 11, thereby realizing the inflation forming of the thermoplastic elastomer 100.

[0054] It can be seen that the inflation forming of the thermoplastic elastomer 100 can be achieved by using fewer equipment, the equipment is simple, the investment is small, and it is easy to operate.

[0055] like Figure 3 As shown, the fixing device 3 includes: an inner blocking cover 31.

[0056] like Figure 3 As shown, there are two inner plugging covers 31 arranged opposite to each other, and both ends of the thermoplastic elastomer 100 are installed between the two inner plugging covers 31. One of the inner plugging covers 31 is provided with a second through hole 311, and the first through hole 21 is opposite to the second through hole 311. The inflation tube 4 passes through the first through hole 21 and the second through hole 311 in sequence and then extends into the thermoplastic elastomer 100.

[0057] Specifically, the fixing device 3 includes two inner plugging covers 31, which are installed at both ends of the thermoplastic elastomer 100, that is, the thermoplastic elastomer 100 is installed between the two inner plugging covers 31. At the same time, a second through hole 311 is opened on one of the inner plugging covers 31, and the second through hole 311 corresponds to the installation position of the first through hole 21, so that the inflation tube 4 can be connected with the inside of the thermoplastic elastomer 100 through the first through hole 21 and the second through hole 311 at one time.

[0058] Furthermore, the fixing device 3 can seal the interior of the thermoplastic elastomer 100 , and the manufacturing mold 200 can limit the molding of the thermoplastic elastomer 100 , thereby achieving the inflation molding of the thermoplastic elastomer 100 .

[0059] Further, such as Figure 3As shown, the fixing device 3 further includes an outer clamping ring 32 .

[0060] There are two outer clamping rings 32 , which are respectively sleeved on the outside of the two inner plugging covers 31 , and two ends of the thermoplastic elastomer 100 are clamped between the corresponding inner plugging covers 31 and the outer clamping rings 32 .

[0061] Specifically, two outer clamping rings 32 are also provided, and the two outer clamping rings 32 are respectively sleeved on the outside of the two inner blocking covers 31 , so that the two ends of the thermoplastic elastomer 100 are clamped between the outer clamping rings 32 and the inner blocking covers 31 .

[0062] Furthermore, the radial dimensions of the two outer clamping rings 32 are different. The radial dimension of the outer clamping ring 32 close to the inner blocking cover 31 having the second through hole 311 is larger, and the radial dimension of the outer clamping ring 32 close to the other inner blocking cover 31 is smaller.

[0063] like Figure 4-Figure 6 As shown, the radial dimension of the outer clamping ring 32 is smaller than the radial dimension of the profiled hollow cavity 11 .

[0064] Thus, the thermoplastic elastomer 100 installed with the fixing device 3 can be placed inside the body 1 of the manufacturing template.

[0065] Further, that is to say, when the thermoplastic elastomer 100 equipped with the fixing device 3 is placed inside the main body 1 of the manufacturing template, the outer peripheries of the two outer clamping rings 32 are in abutment fit with the inner surface of the special-shaped hollow cavity 11 .

[0066] Thereby, the position of the thermoplastic elastomer 100 installed with the outer clamping ring 32 in the main body 1 can be stabilized, and at the same time, it can be ensured that the position of the thermoplastic elastomer 100 will not move or deviate during the inflation and bulging process of the thermoplastic elastomer 100, thereby preventing the deviation of the manufacturing size.

[0067] Among them, Figure 2 As shown, the internal irregular hollow cavity 11 of the main body 1 of the manufacturing mold 200 has two ends, and the radial dimensions of the two ends of the irregular hollow cavity 11 are different. The radial dimension of the irregular hollow cavity 11 at one end close to the first through hole 21 is large, and the radial dimension of the other end of the irregular hollow cavity 11 is small.

[0068] Thus, the larger outer clamping ring 32 can be stop-fitted with the larger end of the special-shaped hollow cavity 11 , and the smaller outer clamping ring 32 can be stop-fitted with the smaller end of the special-shaped hollow cavity 11 .

[0069] According to the following Figure 3-Figure 7 A method for forming a hollow integral thermoplastic elastomer 100 according to a second embodiment of the present invention is described. The method comprises the following steps:

[0070] like Figure 3 As shown, the thermoplastic elastomer 100 is mounted on the fixing device 3 .

[0071] Specifically, two inner plugging covers 31 are installed at both ends of the thermoplastic elastomer 100 , and two outer clamping rings 32 are installed at both ends of the thermoplastic elastomer 100 , and the outer clamping ring 32 with a large radial dimension and the inner plugging cover 31 with a second through hole 311 are installed at the same end of the thermoplastic elastomer 100 .

[0072] Further, such as Figure 4 As shown, the fixing device 3 installed with the thermoplastic elastomer 100 is placed inside the special-shaped hollow cavity 11 of the body 1 , that is, the thermoplastic elastomer 100 together with the fixing device 3 are placed inside the body 1 .

[0073] Furthermore, the mold plugging cover 2 is used to seal the open ends of the body 1 on both sides.

[0074] like Figure 4-Figure 5 As shown, gas is filled into the thermoplastic elastomer 100 through the inflation tube 4 , so that the thermoplastic elastomer 100 is inflated into a shape corresponding to the special-shaped hollow cavity 11 .

[0075] like Figure 6-Figure 7 As shown, the mold and the thermoplastic elastomer 100 are placed together in a heating box 300, heated and then cooled to form.

[0076] Therefore, the inflation forming of the thermoplastic elastomer 100 can be achieved by simple equipment, and the energy consumption is reduced and the operation is convenient.

[0077] According to the second aspect of the present invention, a method for forming a thermoplastic elastomer 100 special-shaped hollow integral product by inflation is provided, by using the manufacturing mold 200 for the thermoplastic elastomer 100 special-shaped hollow integral product according to the first aspect of the present invention. The method can realize inflation forming of the thermoplastic elastomer 100 by a simple structure, with low resource consumption and simple operation.

[0078] like Figure 6 As shown, the body 1 and the thermoplastic elastomer 100 are placed together in a heating box 300 and heated at a predetermined temperature, wherein the predetermined temperature ranges from 70°C to 110°C.

[0079] This makes it easy to control the temperature, so that the quality of the thermoplastic elastomer 100 after the inflation forming can be guaranteed, and it is convenient to control the inflation forming of the thermoplastic elastomer 100.

[0080] like Figure 6As shown, the mold and the thermoplastic elastomer 100 are placed together in a heating box 300. After heating and keeping warm for a predetermined time, the body 1 and the thermoplastic elastomer 100 are taken out of the heating box 300, and the pressure and air are released to take out the molded product.

[0081] Specifically, the mold and the thermoplastic elastomer 100 are placed in the heating box 300 together, heated to a predetermined temperature, and kept warm for a certain period of time, so that the inflation effect of the thermoplastic elastomer 100 can be better, and the inflation molding effect of the thermoplastic elastomer 100 can be ensured to be good.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0083] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A mold for manufacturing a thermoplastic elastomer special-shaped hollow integral product, characterized in that: include: A body, wherein a special-shaped hollow cavity is defined in the body, and both ends of the body are open; A mold plugging cover, wherein the mold plugging covers are two, and the two mold plugging covers are respectively installed at the open ends of both sides of the body to seal the two sides of the body; A fixing device, the fixing device is arranged in the hollow cavity, and the fixing device is used to fix the thermoplastic elastomer; An inflation tube, which passes through one of the mold plugging covers and extends into the thermoplastic elastomer; The mold plugging cover is detachably connected to the body; A first through hole is formed on one of the mold plugging covers, and the inflation tube is inserted into the first through hole; The fixing device comprises: Inner plugging covers, the inner plugging covers are two and arranged opposite to each other, the two ends of the thermoplastic elastomer are installed between the two inner plugging covers, one of the inner plugging covers is provided with a second through hole, the first through hole is opposite to the second through hole, the inflation tube passes through the first through hole and the second through hole in sequence, and then extends into the thermoplastic elastomer; The fixing device also includes: The outer clamping ring includes two outer clamping rings which are respectively sleeved on the outside of the two inner plugging covers, and the two ends of the thermoplastic elastomer are clamped between the corresponding inner plugging covers and the outer clamping rings.

2. The manufacturing mold for thermoplastic elastomer special-shaped hollow integral products according to claim 1, characterized in that: The radial dimension of the outer clamping ring is smaller than the radial dimension of the hollow cavity.

3. The manufacturing mold for thermoplastic elastomer special-shaped hollow integral products according to claim 1, characterized in that: The outer peripheries of the two outer clamping rings are in abutment fit with the inner surface of the hollow cavity.

4. A method for forming a thermoplastic elastomer hollow integral product by inflation, characterized in that: The inflation forming method uses a manufacturing mold for a thermoplastic elastomer special-shaped hollow integral product according to any one of claims 1 to 3, and the inflation forming method comprises the following steps: Mounting the thermoplastic elastomer on the fixture; Placing the fixing device with the thermoplastic elastomer installed inside the hollow cavity of the body; Using the mold plugging cover to seal the open ends on both sides of the body; Filling gas into the thermoplastic elastomer through the inflation tube to expand the thermoplastic elastomer into a shape corresponding to the hollow cavity; The mold and the thermoplastic elastomer are placed together in a heating box, heated and then cooled to form.

5. The method for forming a thermoplastic elastomer hollow integral product by inflation according to claim 4, characterized in that: The main body and the thermoplastic elastomer are placed in a heating box together and heated at a predetermined temperature, wherein the predetermined temperature ranges from 70°C to 110°C.

6. The method for forming a thermoplastic elastomer hollow integral product by inflation according to claim 4, characterized in that: The mold and the thermoplastic elastomer are placed together in a heating box, heated, and kept warm for a predetermined time, and then the body and the thermoplastic elastomer are taken out of the heating box, and the pressure and air are released to take out the molded product.

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