Hot pressing forming method, mold and equipment

Abstract

The present application discloses a hot pressing forming method, mold, and equipment. The hot pressing forming method includes the following steps: the hot pressing forming mold includes: a hot pressing front mold and a hot pressing rear mold, the hot pressing front mold includes a front mold base plate, and at least one first front mold core and at least one second front mold core fixed to the front mold base plate, the first front mold core and the second front mold core are arranged at intervals, the hot pressing rear mold includes a rear mold base plate, and at least one first rear mold core and at least one second rear mold core fixed to the rear mold base plate, the first rear mold core and the second rear mold core are arranged at intervals, and the cavity of the first rear mold core is the same as the cavity of the second rear mold core; the rear mold base plate drives each of the first rear mold cores and each of the second rear mold cores to move back and forth. The present application solves the technical problem of low production efficiency of hot pressing molds for multi-material products in the prior art.

Description

Technical Field

[0001] The present application relates to the field of hot pressing technology, and in particular to a hot pressing method, mold and equipment. Background Art

[0002] Hot press molding is currently the mainstream process for polymer molding. It involves placing a polymer material into a mold cavity at molding temperature, then closing the mold and applying pressure to form and solidify it. For multi-material products, the current molding method involves first hot press molding the portion corresponding to the first material in the first cavity of the first mold. The semi-finished product, or the entire first cavity along with the semi-finished product (i.e., the semi-finished product remains in the first cavity), is then transferred to a second mold for a second molding cycle, resulting in the multi-material product.

[0003] However, the existing technology for hot pressing multi-material product molds uses either a double-station hot press or two single-station hot presses. Both hot pressing steps require station turnover, resulting in a long production cycle and low efficiency. Summary of the Invention

[0004] The main purpose of this application is to provide a hot pressing forming method, mold and equipment, aiming to solve the technical problem of low production efficiency of hot pressing forming molds for multi-material products in the existing technology.

[0005] To achieve the above-mentioned purpose, the present application provides a hot pressing forming mold, which includes: a hot pressing front mold and a hot pressing rear mold, the hot pressing front mold includes a front mold base plate, and at least one first front mold core and at least one second front mold core fixed on the front mold base plate, the first front mold core and the second front mold core are arranged at intervals, the hot pressing rear mold includes a rear mold base plate, and at least one first rear mold core and at least one second rear mold core fixed on the rear mold base plate, the first rear mold core and the second rear mold core are arranged at intervals, the cavity of the first rear mold core is the same as the cavity of the second rear mold core; the rear mold base plate drives each of the first rear mold cores and each of the second rear mold cores to move back and forth.

[0006] Optionally, the hot pressing front mold is a movable mold, and the hot pressing rear mold is a fixed mold.

[0007] The present application also provides a hot pressing forming device, which comprises:

[0008] A hot pressing forming mold, wherein the hot pressing forming mold is the hot pressing forming mold described above;

[0009] The driving device is used to drive the rear mold base plate to drive the first rear mold core and the second rear mold core to move back and forth, and to drive the front mold base plate to drive the first front mold core and the second front mold core to move back and forth.

[0010] Optionally, the driving device includes:

[0011] A hot pressing front mold driving device is used to drive the hot pressing front mold to move back and forth in the direction of mold opening or closing;

[0012] The hot pressing rear mold driving device is used to drive the hot pressing rear mold to move back and forth in a direction perpendicular to the movement of the hot pressing front mold.

[0013] Optionally, the thermoforming equipment further comprises:

[0014] A limit block, used to limit the moving position of the hot pressing rear mold;

[0015] The precision positioning component is used to limit the moving position of the hot pressing front mold.

[0016] The present application also provides a hot pressing forming method, which is applied to the hot pressing forming equipment as described above, and the hot pressing forming method comprises the following steps:

[0017] When the position of each first front mold core matches the position of each first rear mold core, placing the first raw material on each first rear mold core;

[0018] Closing the hot pressing mold so that the first raw material fills the first cavity formed by closing the first front mold cores and the first rear mold cores;

[0019] Opening the hot pressing mold to obtain a single-material semi-finished product;

[0020] Move the hot pressing front mold or hot pressing rear mold;

[0021] When the position of the second front mold core of the hot pressing mold matches the position of the first rear mold core, the second raw material is placed on each of the first rear mold cores, and the first raw material is placed on each of the second rear mold cores;

[0022] Closing the hot pressing mold so that the second raw material fills the second cavity formed by the second front mold cores and the first rear mold cores, and the first raw material fills the third cavity formed by the first front mold cores and the second rear mold cores;

[0023] The hot pressing mold is opened to obtain a multi-material product and a single-material semi-finished product.

[0024] Optionally, before the step of opening the hot pressing mold, the method further comprises:

[0025] When it is determined that the hot pressing mold is closed, the first raw material and / or the second raw material in the hot pressing mold is vulcanized.

[0026] Optionally, the temperature of the vulcanization treatment is 150-180°C, and the pressure of the vulcanization treatment is 80-100 kgf / cm 2 The time of the vulcanization treatment is 5-10 minutes.

[0027] Optionally, after the step of opening the hot pressing mold to obtain the multi-material product and the single-material semi-finished product, the process further includes:

[0028] removing the multi-material product;

[0029] Moving the hot pressing front mold or the hot pressing rear mold, when the position of each first front mold core matches the position of each first rear mold core, placing the first raw material on each first rear mold core, and placing the second raw material on each second rear mold core;

[0030] Closing the hot pressing mold so that the first raw material fills a first cavity formed by closing the first front mold cores and the first rear mold cores, and the second raw material fills a fourth cavity formed by closing the second front mold cores and the second rear mold cores;

[0031] Opening the hot pressing mold to obtain a single-material semi-finished product and a multi-material product;

[0032] Move the hot pressing front mold or the hot pressing rear mold and return to the execution step: when the position of the second front mold core of the hot pressing mold matches the position of the first rear mold core, place the second raw material on each of the first rear mold cores, and place the first raw material on each of the second rear mold cores.

[0033] Optionally, the first raw material includes a first fluororubber material, and the second raw material includes a second fluororubber material.

[0034] The present application provides a hot pressing forming method, mold and equipment, wherein the hot pressing forming mold includes a hot pressing front mold and a hot pressing rear mold, and by arranging at least one first front mold core and at least one second front mold core on the front mold base plate of the hot pressing front mold, the first front mold core and the second front mold core are arranged at intervals, thereby realizing that the first front mold core and the second front mold core with two identical or different cavity structures are arranged at intervals on the same front mold base plate of the same mold, and further, by arranging at least one first rear mold core and at least one second rear mold core on the rear mold base plate of the hot pressing rear mold, the first rear mold core and the second rear mold core are arranged at intervals, and the cavity of the first rear mold core is the same as the cavity of the second rear mold core, thereby realizing that the first front mold core and the second front mold core with the same cavity structure are arranged at intervals on the same front mold base plate of the same mold. On a rear mold base plate, the rear mold base plate drives each of the first rear mold cores and each of the second rear mold cores to move back and forth, and the front mold base plate or the rear mold base plate is moved one or more mold core distances, so that the position correspondence between each front mold core on the front mold base plate and each rear mold core on the rear mold base plate can be quickly adjusted. Compared with the existing technology of turnover between different models or different hot presses, the turnover distance in the technical solution of the present application is greatly shortened, thereby effectively shortening the turnover time, and the mold core fixed on the same base plate is rotated a distance of a mold core length, and the turnover process is simple, thereby effectively shortening the time for repositioning after turnover, thereby improving the mold hot pressing production efficiency of multi-material products, and overcoming the technical problem of low mold hot pressing production efficiency of multi-material products in the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0037] Figure 1 This is a front view of an embodiment of the hot pressing mold of the present application;

[0038] Figure 2 This is a front view of another embodiment of the hot pressing mold of the present application;

[0039] Figure 3 This is a front view of an embodiment of the hot pressing forming equipment of the present application;

[0040] Figure 4This is a schematic structural diagram of a possible implementation method of the hot pressing forming equipment of the present application;

[0041] Figure 5 This is a schematic flow chart of an embodiment of the hot pressing forming method of the present application;

[0042] Figure 6 Schematic diagram of step S10 in the hot pressing forming method of this application;

[0043] Figure 7 Schematic diagram of step S20 in the hot pressing forming method of this application;

[0044] Figure 8 Schematic diagram of step S50 in the hot pressing forming method of this application;

[0045] Figure 9 This is a schematic diagram of the scene of step S60 in the hot pressing forming method of this application.

[0046] Description of Figure Numbers:

[0047]

[0048]

[0049] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0050] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0051] The present application embodiment provides a hot pressing forming mold. In one embodiment of the hot pressing forming mold of the present application, Figure 1The hot pressing forming mold includes: a hot pressing front mold 1 and a hot pressing rear mold 2, the hot pressing front mold 1 includes a front mold base plate 13, and at least one first front mold core 11 and at least one second front mold core 12 fixed on the front mold base plate 13, each of the first front mold core 11 and each of the second front mold core 12 can be fixed to the front mold base plate 13 by fasteners or welding. After fixation, the side of each of the first front mold core 11 and each of the second rear mold core 12 with a cavity faces the hot pressing rear mold, the first front mold core 11 and the second front mold core 12 are arranged at intervals, and each of the first front mold core 11 and each of the second rear mold core 12 has a cavity. The cavity on the first front mold core 11 and the cavity on the second rear mold core 12 can be the same or different. The specific cavity shape and specifications can be designed and processed according to actual process requirements. This embodiment is not limited to this. In an practicable manner, the cavity on the first front mold core 11 and the cavity circumference on the second rear mold core 12 can adopt an overflow design.

[0052] The mold cavity of the first rear mold core 21 is the same as the mold cavity of the second rear mold core 22. The hot pressing rear mold 2 includes a rear mold base plate 23, and at least one first rear mold core 21 and at least one second rear mold core 22 fixed on the rear mold base plate 23. Each of the first rear mold core 21 and each of the second rear mold cores 22 can be fixed to the rear mold base plate 23 by fasteners or welding. After fixation, the side of each of the first rear mold core 21 and each of the second rear mold cores 22 with the mold cavity faces the hot pressing front mold. The first rear mold core 21 and the second rear mold core 22 are arranged at intervals. Each of the first rear mold core 21 and each of the second rear mold cores 22 has a mold cavity. The mold cavity of the first rear mold core 21 is the same as the mold cavity of the second rear mold core 22. The specific mold cavity shape and specifications can be designed and processed according to actual process requirements. This embodiment is not limited to this. In an practicable manner, the mold cavity of the first rear mold core 21 and the mold cavity circumference on the second rear mold core 22 can adopt an overflow design.

[0053] Any cavity on each of the first front mold cores 11 or each of the second front mold cores 12 can be spliced ​​with any cavity on the first rear mold core 21 or the second rear mold core 22 to form a complete cavity.

[0054] In one feasible embodiment, the widths of each first front mold core 11, each second front mold core 12, each first rear mold core 21 and each second rear mold core 22 are equal, and the spacing distances between any two adjacent first front mold cores 11 and second front mold cores 12 fixed on the front mold base plate 13 are equal, the spacing distances between any two adjacent first rear mold cores 21 and second rear mold cores 22 fixed on the rear mold base plate 23 are equal, and the spacing distance on the front mold base plate 13 is also equal to the spacing distance on the rear mold base plate 23, thereby simplifying the processing technology of the mold core, facilitating the mass production of the mold core, reducing processing costs, and effectively simplifying the step length design and control method of each reciprocating motion of the rear mold base plate 23, thereby improving the positioning accuracy of the rear mold base plate 23 after each reciprocating motion.

[0055] The rear mold base plate 23 drives each of the first rear mold cores 21 and each of the second rear mold cores 22 to move back and forth. In an operative manner, the direction of the back mold base plate 23 to move back and forth is perpendicular to the direction of movement of the hot pressing front mold 1 and the hot pressing rear mold 2 during the opening or closing process. For example, referring to Figure 1 and Figure 2 , the hot pressing forming mold is placed horizontally, the movement direction of the hot pressing front mold 1 and the hot pressing rear mold 2 during the opening or closing process is the vertical direction, and the direction of the back mold base plate 23 moving back and forth is the horizontal direction before moving, such as Figure 1 As shown, the position of each first front mold core 11 is opposite to the position of each first rear mold core 21, and the position of each second front mold core 12 is opposite to the position of each second rear mold core 22. By moving the hot pressing rear mold to the left, moving the width of a mold core plus the width of a spacing distance, the position of each first front mold core 11 can be changed to a position opposite to each second rear mold core 22, and the position of each second front mold core 12 can be changed to a position opposite to each first rear mold core 21.

[0056] In this embodiment, the number of products processed each time can be increased by increasing the number of front molds and rear molds. For example, if 10 first front molds, 10 first rear molds, 10 second front molds and 9 second rear molds are set, 9 or 10 multi-material products can be obtained each time processing. Compared with the turnover of multiple machines or multiple equipment for each multi-material product, the production efficiency can be greatly improved, and batch production can be carried out, which has high economic value and practical significance.

[0057] Optionally, the hot pressing front mold 1 is a movable mold, and the hot pressing rear mold 2 is a fixed mold.

[0058] In this embodiment, it should be noted that the hot pressing mold includes a movable mold and a fixed mold. During the hot pressing process, the opening and closing of the mold are completed by keeping the fixed mold stationary and controlling the movement of the movable mold. That is, when the material to be hot pressed needs to be placed in the mold cavity, or when the product needs to be taken out of the mold cavity after the hot pressing is completed, the fixed mold can be kept stationary and the movable mold can be controlled to move away from the fixed mold so that the movable mold and the fixed mold are separated. After the raw material is placed in the mold, when the raw material needs to be hot pressed, the fixed mold can be kept stationary and the movable mold can be controlled to move toward the fixed mold so that the movable mold and the fixed mold are closed to perform hot pressing on the raw material.

[0059] It is easy to understand that the fixed mold in this embodiment only remains fixed during the process of opening and closing the mold. During other processing processes except opening and closing the mold, the fixed mold may move or not.

[0060] In one feasible manner, by designing the appearance and specifications of each first front mold core 11, each second front mold core 12, each first rear mold core 21 and each second rear mold core 22, the spacing distance between each first front mold core 11 and each second front mold core 12, and the spacing distance between each first rear mold core 21 and each second rear mold core 22, it is possible to make it possible for the hot pressing mold to be closed, each first rear mold core 21 to be tightly fitted with a first front mold core 11 or a first rear mold core 12, respectively, and form a complete closed cavity on the fitting surface. At the same time, each second rear mold core 22 can also be tightly fitted with a first front mold core 11 or a first rear mold core 12, respectively, and form a complete closed cavity on the fitting surface.

[0061] In this embodiment, by arranging at least one first front mold core and at least one second front mold core on the front mold base plate of the hot pressing front mold, the first front mold core and the second front mold core are arranged at intervals, so that the first front mold core and the second front mold core with two identical or different cavity structures are arranged at intervals on the same front mold base plate of the same mold, and then, by arranging at least one first rear mold core and at least one second rear mold core on the rear mold base plate of the hot pressing rear mold, the first rear mold core and the second rear mold core are arranged at intervals, and the cavity of the first rear mold core is the same as the cavity of the second rear mold core, so that the first front mold core and the second front mold core with the same cavity structure are arranged at intervals on the same rear mold base plate of the same mold, and then, by the rear mold The seat plate drives each of the first rear mold cores and each of the second rear mold cores to move back and forth. By moving the front mold seat plate or the rear mold seat plate by one or more mold core distances, the position correspondence between each front mold core on the front mold seat plate and each rear mold core on the rear mold seat plate can be quickly adjusted. Compared with the existing technology of turnover between different models or different hot presses, the turnover distance in the technical solution of this application is greatly shortened, thereby effectively shortening the turnover time, and the mold core fixed on the same seat plate is rotated a distance of a mold core length. The turnover process is simple, thereby effectively shortening the time for repositioning after turnover, thereby improving the mold hot pressing production efficiency of multi-material products, and overcoming the technical problem of low mold hot pressing production efficiency of multi-material products in the existing technology.

[0062] The present application also provides a thermoforming device. In one embodiment of the thermoforming device of the present application, Figure 3 The hot pressing forming equipment includes but is not limited to: a hot pressing forming mold and a driving device 3, wherein the hot pressing forming mold is the hot pressing forming mold as described above, and the driving device 3 is used to drive the rear mold base plate 23 to drive the first rear mold core 21 and the second rear mold core 22 to move back and forth, and drive the front mold base plate 13 to drive the first front mold core 11 and the second front mold core 12 to move back and forth. The driving device 3 can be a cylinder, a hydraulic system or an oil cylinder, etc. It is easy to understand that the same driving device or different driving devices can be used to drive the rear mold base plate 23 to drive the first rear mold core 21 and the second rear mold core 22 to move back and forth, and drive the front mold base plate 13 to drive the first front mold core 11 and the second front mold core 12 to move back and forth.

[0063] Optionally, the driving device includes: a hot pressing front mold driving device and a hot pressing rear mold driving device, wherein the hot pressing front mold driving device is used to drive the hot pressing front mold to move back and forth in the direction of opening or closing the mold, and the hot pressing front mold driving device can be a cylinder, a hydraulic system or an oil cylinder, etc.; the hot pressing rear mold driving device is used to drive the hot pressing rear mold to move back and forth in a direction perpendicular to the movement of the hot pressing front mold, and the hot pressing rear mold driving device can be a cylinder, a hydraulic system or an oil cylinder, etc.

[0064] In one practicable manner, referring to Figure 1 and Figure 2 , the hot pressing forming mold is placed horizontally, the movement direction of the hot pressing front mold and the hot pressing rear mold during opening or closing is vertical, and the direction of the back mold base plate 23 moving back and forth is horizontal before moving, such as Figure 1 As shown, the position of each first front mold core 11 is opposite to the position of each first rear mold core 21, and the position of each second front mold core 12 is opposite to the position of each second rear mold core 22. By moving the hot pressing rear mold to the left, moving the width of a mold core plus the width of a spacing distance, the position of each first front mold core 11 can be changed to a position opposite to each second rear mold core 22, and the position of each second front mold core 12 can be changed to a position opposite to each first rear mold core 21.

[0065] Optionally, the hot pressing molding equipment further includes: a limit block 5 and a precision positioning component 7, wherein the limit block 5 is used to limit the moving position of the hot pressing rear mold; the precision positioning component 7 is used to limit the moving position of the hot pressing front mold.

[0066] In this embodiment, the dimensional accuracy design of the limit block 5 and the rear mold base plate 23 can ensure the accuracy of the rear mold base plate's moving position, and the precise positioning component can be used to perform precise positioning when closing the mold, thereby ensuring the accuracy of the product.

[0067] In one practicable manner, referring to Figure 4 The hot pressing forming equipment may further include: a main control machine, a six-axis manipulator, a roller 4 and a guide rail 6, etc., wherein the main control machine is used to exchange signals with the drive device 3 and the six-axis manipulator, etc. to realize automated production, and the six-axis manipulator is used to place raw materials into the hot pressing forming mold and take out products from the hot pressing forming mold. The hot pressing forming equipment in this embodiment simplifies the long-distance turnover process between multiple single-station hot pressing forming equipment or multiple stations in the existing process through a single-station hot pressing forming equipment, and solves the problem of long repeated positioning time caused by this. The roller 4 and the guide rail 6 ensure the movement accuracy of the hot pressing rear mold and the stability during the movement process, thereby ensuring product accuracy.

[0068] The hot press forming equipment provided in this application solves the technical problem of low production efficiency in hot press forming molds for multi-material products in the prior art. Compared with the prior art, the beneficial effects of the hot press forming equipment provided in this embodiment of the present invention are the same as those of the hot press forming molds in the above-mentioned embodiments, and will not be elaborated here.

[0069] The present application also provides a hot pressing method. In one embodiment of the hot pressing method of the present application, Figure 5 , the hot pressing forming method comprises:

[0070] Step S10, when the position of each first front mold core matches the position of each first rear mold core, placing the first raw material on each first rear mold core;

[0071] In this embodiment, specifically, the hot pressing forming equipment is started, the hot pressing forming mold is opened, and the position of the hot pressing front mold or the hot pressing rear mold is adjusted to the initial position, so that the position of each first front mold core matches the position of each first rear mold core, so that when the hot pressing forming mold is closed, each first front mold core can be fitted with each first rear mold core. When the position of each first front mold core matches the position of each first rear mold core, the pre-prepared first raw material is placed on each first rear mold core by a six-axis manipulator, wherein the first raw material includes plastic, rubber, etc., and the first raw material is prepared by preparing a first raw material of a certain shape and gram weight through processes such as refining and cutting. The shape and gram weight of the first raw material can be determined according to the actual needs of the product, and this embodiment does not limit this. The processes such as refining and cutting are similar to the existing technology and will not be elaborated here. The specific process parameters of the processes such as refining and cutting can be determined according to the actual needs of the product, and this embodiment does not limit this.

[0072] In one embodiment, referring to Figure 6 , start the hot pressing molding equipment, open the hot pressing molding mold, adjust the position of the hot pressing rear mold so that the position of each first front mold core 11 matches the position of each first rear mold core 21. When the position of each first front mold core 11 matches the position of each first rear mold core 21, the pre-prepared first raw material 8 is placed on each first rear mold core 21 through a six-axis manipulator.

[0073] Optionally, the first raw material includes a first fluororubber material.

[0074] In this embodiment, it should be noted that fluororubber materials are increasingly used in wearable business fields such as smart watches, AR (Augmented Reality) / VR (Virtual Reality). Compared with other materials, fluororubber can provide better visual and tactile effects, and is comfortable and durable to wear.

[0075] Step S20, closing the hot pressing mold so that the first raw material fills the first mold cavity formed by closing the first front mold cores and the first rear mold cores;

[0076] In this embodiment, specifically, the hot pressing mold is closed so that each of the first front mold cores is tightly fitted with each corresponding first rear mold core. After each of the first front mold cores is closed with each corresponding first rear mold core, a first cavity is formed on the fitting surface, and then the first raw material placed on the first rear mold core fills each of the first cavities under the action of pressure and / or temperature.

[0077] In one feasible manner, when closing the hot pressing mold, precise positioning can be performed through a precise positioning component to ensure that the cavity on the front mold core and the cavity on the rear mold core can be accurately closed after closing, thereby improving product precision.

[0078] In one practicable manner, referring to Figure 7 , close the hot pressing mold so that each first front mold core 11 is tightly fitted with each corresponding first rear mold core 21. After each first front mold core 11 is closed with each corresponding first rear mold core 21, a first cavity is formed on the fitting surface, and then the first raw material 8 placed on the first rear mold core fills each first cavity under the action of pressure and / or temperature.

[0079] Optionally, before the step of opening the hot pressing mold, the method further comprises:

[0080] When it is determined that the hot pressing mold is closed, the first raw material and / or the second raw material in the hot pressing mold is vulcanized.

[0081] In this embodiment, specifically, when it is determined that the hot pressing mold is closed, the first raw material and / or the second raw material in the first cavity, the second cavity, the third cavity and / or the fourth cavity formed in the hot pressing mold are vulcanized.

[0082] It should be noted that, in the actual processing process, except for opening the hot pressing mold at the initial startup, the raw materials in the mold cavity can be vulcanized before each opening of the hot pressing mold. The cavity can be the first cavity, the second cavity, the third cavity and / or the fourth cavity, etc., and the raw materials can be the first raw material and / or the second raw material, etc.

[0083] Optionally, the temperature of the vulcanization treatment is 150-180°C, and the pressure of the vulcanization treatment is 80-100 kgf / cm 2 The time of the vulcanization treatment is 5-10 minutes.

[0084] In this embodiment, specifically, the temperature of the vulcanization treatment is 150-180°C (degrees Celsius), such as 150°C, 172°C, 180°C, etc., and the pressure of the vulcanization treatment is 80-100 kgf / cm 2 (1 kilogram force per square centimeter), for example 80kgf / cm 2 、88kgf / cm 2 、100kgf / cm 2 The vulcanization treatment time is 5-10 minutes, such as 5 minutes, 7.5 minutes, 10 minutes, etc.

[0085] In one practicable manner, the first raw material does not need to be completely vulcanized during the vulcanization treatment. The vulcanization state of the first raw material only needs to reach T60-T70 to ensure better bonding of the first and second shot materials.

[0086] Step S30, opening the hot pressing mold to obtain a single material semi-finished product;

[0087] In this embodiment, specifically, the hot pressing mold is opened to obtain a single-material semi-finished product.

[0088] Step S40, moving the hot pressing front mold or the hot pressing rear mold;

[0089] In this embodiment, specifically, the driving device is used to control the overall movement of the hot pressing front mold or the hot pressing rear mold so that the position of the second front mold core of the hot pressing forming mold matches the position of the first rear mold core, and thus when the hot pressing forming mold is closed, each second front mold core can be fitted with each first rear mold core, and each first front mold core can be fitted with each second rear mold core.

[0090] Step S50, when the position of the second front mold core of the hot pressing mold matches the position of the first rear mold core, placing the second raw material on each of the first rear mold cores, and placing the first raw material on each of the second rear mold cores;

[0091] In this embodiment, specifically, when the position of the second front mold core of the hot pressing mold matches the position of the first rear mold core, the pre-prepared second raw material is placed on each first rear mold core, and the pre-prepared first raw material is placed on each second rear mold core through a six-axis manipulator, wherein the second raw material includes plastic, rubber, etc., and the second raw material is prepared by preparing a second raw material of a certain shape and gram weight through processes such as refining and cutting. The shape and gram weight of the second raw material can be determined according to the actual needs of the product, and this embodiment does not limit this. The processes such as refining and cutting are similar to the existing technology and will not be elaborated here. The specific process parameters of the processes such as refining and cutting can be determined according to the actual needs of the product, and this embodiment does not limit this.

[0092] In one practicable manner, referring to Figure 8 When the position of the second front mold core 12 of the hot pressing mold matches the position of the first rear mold core 21, the pre-prepared second raw material 9 is placed on each of the first rear mold cores 21 through the six-axis manipulator, and the pre-prepared first raw material 8 is placed on each of the second rear mold cores 22.

[0093] Optionally, the second raw material includes a second fluororubber material.

[0094] In this embodiment, it should be noted that the second fluororubber material and the first fluororubber material are both fluororubber materials, but the specific composition or color of the second fluororubber material and the first fluororubber material are different. Fluororubber materials are increasingly used in wearable business fields such as smart watches, AR (Augmented Reality) / VR (Virtual Reality). Compared with other materials, fluororubber can provide better visual and tactile effects, and is comfortable and durable to wear.

[0095] Step S60: closing the hot pressing mold so that the second raw material fills the second cavity formed by closing the second front mold cores and the first rear mold cores, and the first raw material fills the third cavity formed by closing the first front mold cores and the second rear mold cores;

[0096] In this embodiment, specifically, the hot pressing mold is closed so that each second front mold core is tightly fitted with its corresponding first rear mold core, and after each second front mold core is closed with its corresponding first rear mold core, a second cavity is formed on the fitting surface, so that the second raw material placed on the first rear mold core is filled with each first cavity under the action of pressure and / or temperature; at the same time, each first front mold core is tightly fitted with its corresponding second rear mold core, and after each first front mold core is closed with its corresponding second rear mold core, a third cavity is formed on the fitting surface, so that the first raw material placed on the second rear mold core is filled with each third cavity under the action of pressure and / or temperature, wherein, since the first rear mold core is the same as the second rear mold core, the third cavity is the same as the first cavity.

[0097] In one feasible manner, when closing the hot pressing mold, precise positioning can be performed through a precise positioning component to ensure that the cavity on the front mold core and the cavity on the rear mold core can be accurately closed after closing, thereby improving product precision.

[0098] In one practicable manner, referring to Figure 9 , close the hot pressing molding mold so that each second front mold core 12 is tightly fitted with each corresponding first rear mold core 21. After each second front mold core 12 is closed with each corresponding first rear mold core 21, a second cavity is formed on the fitting surface, so that the second raw material 9 placed on the first rear mold core 21 is filled with each first cavity under the action of pressure and / or temperature; at the same time, each first front mold core 11 is tightly fitted with each corresponding second rear mold core 21. After each first front mold core 11 is closed with each corresponding second rear mold core 21, a third cavity is formed on the fitting surface, so that the first raw material 8 placed on the second rear mold core 22 is filled with each third cavity under the action of pressure and / or temperature, wherein, since the first rear mold core 21 is the same as the second rear mold core 22, the third cavity is the same as the first cavity.

[0099] Optionally, before the step of opening the hot pressing mold, the method further comprises:

[0100] When it is determined that the hot pressing mold is closed, the first raw material and / or the second raw material in the hot pressing mold is vulcanized.

[0101] In this embodiment, specifically, when it is determined that the hot pressing mold is closed, the first raw material and / or the second raw material in the first cavity, the second cavity, the third cavity and / or the fourth cavity formed in the hot pressing mold are vulcanized.

[0102] It should be noted that, in the actual processing process, except for opening the hot pressing mold at the initial startup, the raw materials in the mold cavity can be vulcanized before each opening of the hot pressing mold. The cavity can be the first cavity, the second cavity, the third cavity and / or the fourth cavity, etc., and the raw materials can be the first raw material and / or the second raw material, etc.

[0103] Optionally, the temperature of the vulcanization treatment is 150-180°C, and the pressure of the vulcanization treatment is 80-100 kgf / cm 2 The time of the vulcanization treatment is 5-10 minutes.

[0104] In this embodiment, specifically, the temperature of the vulcanization treatment is 150-180°C (degrees Celsius), such as 150°C, 165°C, 180°C, etc., and the pressure of the vulcanization treatment is 80-100 kgf / cm 2 (1 kilogram force per square centimeter), for example 80kgf / cm 2 、92kgf / cm 2 、100kgf / cm 2 The vulcanization treatment time is 5-10 minutes, such as 5 minutes, 8.6 minutes, 10 minutes, etc.

[0105] It should be noted that, in the actual processing process, except for opening the hot pressing mold at the initial startup, the raw materials in the mold cavity can be vulcanized before each opening of the hot pressing mold. The cavity can be the first cavity, the second cavity, the third cavity and / or the fourth cavity, etc., and the raw materials can be the first raw material and / or the second raw material, etc.

[0106] Step S70: Open the hot pressing mold to obtain a multi-material product and a single-material semi-finished product.

[0107] In this embodiment, specifically, the hot pressing mold is opened to obtain a multi-material product and a single-material semi-finished product.

[0108] Optionally, after the step of opening the hot pressing mold to obtain the multi-material product and the single-material semi-finished product, the process further includes:

[0109] Step A10, taking out the multi-material product;

[0110] Step A20: moving the hot pressing front mold or the hot pressing rear mold, and when the position of each first front mold core matches the position of each first rear mold core, placing the first raw material on each first rear mold core, and placing the second raw material on each second rear mold core;

[0111] Step A30: closing the hot pressing mold so that the first raw material fills the first cavity formed by the first front mold cores and the first rear mold cores, and the second raw material fills the fourth cavity formed by the second front mold cores and the second rear mold cores.

[0112] Step A40, opening the hot pressing mold to obtain a single-material semi-finished product and a multi-material product;

[0113] Step A50, move the hot pressing front mold or the hot pressing rear mold, and return to the execution step: when the position of the second front mold core of the hot pressing mold matches the position of the first rear mold core, place the second raw material on each of the first rear mold cores, and place the first raw material on each of the second rear mold cores.

[0114] In this embodiment, specifically, the multi-material product in the hot pressing mold is taken out, and the hot pressing front mold or the hot pressing rear mold is controlled by a driving device to move as a whole and return to the initial position. When the position of each first front mold core matches the position of each first rear mold core, the pre-prepared first raw material is placed on each first rear mold core by a six-axis manipulator, and the pre-prepared second raw material is placed on each second rear mold core, and the hot pressing mold is closed so that each first front mold core is tightly fitted with the corresponding first rear mold core. After each first front mold core is closed with the corresponding first rear mold core, a first cavity is formed on the fitting surface, thereby causing the first raw material placed on the first rear mold core to be pressed tightly under pressure and / or pressure. or temperature, fill each first cavity; at the same time, make each second front mold core fit tightly with each corresponding second rear mold core, after each second front mold core is closed with each corresponding second rear mold core, a fourth cavity is formed on the fitting surface, and then the second raw material placed on the second rear mold core fills each fourth cavity under the action of pressure and / or temperature, open the hot pressing molding die, obtain a single material semi-finished product, and a multi-material product, move the hot pressing front mold or the hot pressing rear mold, and return to the execution step: when the position of the second front mold core of the hot pressing molding die matches the position of the first rear mold core, place the second raw material on each first rear mold core, and place the first raw material on each second rear mold core.

[0115] In this embodiment, by controlling the movement distance of one or more mold cores of the hot pressing front mold or the hot pressing rear mold, the position correspondence between the various front mold cores on the front mold base plate and the various rear mold cores on the rear mold base plate can be quickly adjusted. Compared with the existing technology of turnover between different models or different hot presses, the turnover distance in the technical solution of the present application is greatly shortened, thereby effectively shortening the turnover time, and the mold core fixed on the same base plate is rotated a distance of a mold core length. The turnover process is simple, thereby effectively shortening the time for repositioning after turnover, thereby improving the mold hot pressing molding production efficiency of multi-material products, and overcoming the technical problem of low mold hot pressing molding production efficiency of multi-material products in the existing technology.

[0116] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent processing scope of the present application.

Claims

1. A hot pressing mold, characterized in that: The hot pressing forming mold includes: a hot pressing front mold and a hot pressing rear mold, the hot pressing front mold is a movable mold, the hot pressing rear mold is a fixed mold, the hot pressing front mold includes a front mold base plate, and at least two first front mold cores and at least one second front mold core fixed on the front mold base plate, the first front mold core and the second front mold core are arranged at intervals, and the cavity of the first front mold core is different from the cavity of the second front mold core; the hot pressing rear mold includes a rear mold base plate, and at least one first rear mold core and at least one second rear mold core fixed on the rear mold base plate, each of the first rear mold cores and each of the second rear mold cores is fastened The hot pressing front mold is fixed to the rear mold base plate by parts or welding. After fixation, the first rear mold core and the second rear mold core have a side with a cavity facing the hot pressing front mold, the first rear mold core and the second rear mold core are arranged at intervals, and the cavity of the first rear mold core is the same as the cavity of the second rear mold core; the rear mold base plate drives the first rear mold core and the second rear mold core to move back and forth, and the front mold base plate drives the first front mold core and the second front mold core to move back and forth, and the direction of the back and forth movement of the rear mold base plate is perpendicular to the movement direction of the hot pressing front mold and the hot pressing rear mold during opening or closing.

2. A hot pressing forming device, characterized in that: The hot pressing forming equipment comprises: A hot pressing forming mold, wherein the hot pressing forming mold is the hot pressing forming mold as claimed in claim 1; The driving device is used to drive the rear mold base plate to drive the first rear mold core and the second rear mold core to move back and forth, and to drive the front mold base plate to drive the first front mold core and the second front mold core to move back and forth.

3. The hot pressing forming equipment according to claim 2, characterized in that The driving device comprises: A hot pressing front mold driving device is used to drive the hot pressing front mold to move back and forth in the direction of mold opening or closing; The hot pressing rear mold driving device is used to drive the hot pressing rear mold to move back and forth in a direction perpendicular to the movement of the hot pressing front mold.

4. The hot pressing forming equipment according to claim 2, characterized in that The thermoforming equipment further comprises: A limit block, used to limit the moving position of the hot pressing rear mold; The precision positioning component is used to limit the moving position of the hot pressing front mold.

5. A hot pressing forming method, characterized in that: The hot pressing forming method is applied to the hot pressing forming equipment according to any one of claims 2 to 4, and the hot pressing forming method comprises the following steps: When the position of each first front mold core matches the position of each first rear mold core, placing the first raw material on each first rear mold core; Closing the hot pressing mold so that the first raw material fills the first cavity formed by closing the first front mold cores and the first rear mold cores; Opening the hot pressing mold to obtain a single-material semi-finished product; Move the hot pressing front mold or hot pressing rear mold; When the position of the second front mold core of the hot pressing mold matches the position of the first rear mold core, the second raw material is placed on each of the first rear mold cores, and the first raw material is placed on each of the second rear mold cores; Closing the hot pressing mold so that the second raw material fills the second cavity formed by the second front mold cores and the first rear mold cores, and the first raw material fills the third cavity formed by the first front mold cores and the second rear mold cores; The hot pressing mold is opened to obtain a multi-material product and a single-material semi-finished product.

6. The hot pressing method according to claim 5, wherein: Before the step of opening the hot pressing mold, the method further comprises: When it is determined that the hot pressing mold is closed, the first raw material and / or the second raw material in the hot pressing mold is vulcanized.

7. The hot pressing method according to claim 6, wherein: The temperature of the vulcanization treatment is 150-180°C, and the pressure of the vulcanization treatment is 80-100 kgf / cm 2 The time of the vulcanization treatment is 5-10 minutes.

8. The hot pressing method according to claim 5, wherein: After the step of opening the hot pressing mold to obtain a multi-material product and a single-material semi-finished product, the method further includes: removing the multi-material product; Moving the hot pressing front mold or the hot pressing rear mold, when the position of each first front mold core matches the position of each first rear mold core, placing the first raw material on each first rear mold core, and placing the second raw material on each second rear mold core; Closing the hot pressing mold so that the first raw material fills a first cavity formed by closing the first front mold cores and the first rear mold cores, and the second raw material fills a fourth cavity formed by closing the second front mold cores and the second rear mold cores; Opening the hot pressing mold to obtain a single-material semi-finished product and a multi-material product; Move the hot pressing front mold or the hot pressing rear mold and return to the execution step: when the position of the second front mold core of the hot pressing mold matches the position of the first rear mold core, place the second raw material on each of the first rear mold cores, and place the first raw material on each of the second rear mold cores.

9. The hot pressing method according to claim 5, wherein: The first raw material includes a first fluororubber material, and the second raw material includes a second fluororubber material.

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