Processing method for laminating flexible materials

Abstract

The present invention discloses a process method for laminating flexible materials. The process method laminates the flexible materials on a shell part with an opening at the upper end based on a pressure processing device. The pressure processing device comprises an upper die group and a lower die group which can move relative to each other in an upward and downward direction. The lower die group is used for placing a circulation tooling on which a component to be processed is placed. The upper die group is arranged above the lower die group. The upper die group comprises a pressing structure. The process method for laminating flexible materials comprises the following steps: placing the circulation tooling on which the component to be processed is placed on the lower die group; driving the upper die group or the lower die group to move so that the pressing structure stretches the flexible material in the component to be processed downward and horizontally; when the current drawing rate of the flexible material meets the preset conditions, driving the upper die group or the lower die group to move to a mold closing state to obtain a finished assembly in which the flexible material and the inner surface of the shell part with an opening at the upper end are pressed together.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical manufacturing, and in particular to a process method for laminating flexible materials. Background Art

[0002] With the development of the manufacturing industry, the requirements for product component assembly are getting higher and higher. The demand for product quality and shipment volume is also increasing day by day. In order to meet the process requirements of flexible and stretchable materials being attached to harder shell parts, it is necessary to stretch and coat the flexible and stretchable materials, and the finished parts must have uniform color. For example, for cloth, the warp and weft must be uniform and the base color of the shell must not show through. For example, for leather, the thickness must be uniform. The existing processing methods still have the above defects, resulting in a low yield rate. Therefore, the processing technology for flexible and stretchable materials to be attached to harder shell parts still needs to be continuously optimized and improved. Summary of the invention

[0003] The main purpose of the present invention is to propose a process method for bonding flexible materials, which first makes the elongation of the flexible material close to the final stretched shape, and then bonds the material to multiple parts of the shell parts, avoiding the defect of uneven stretching color caused by single local stretching, while simplifying the process steps.

[0004] To achieve the above-mentioned purpose, the present invention proposes a process method for laminating a flexible material, wherein the flexible material is laminarized on a shell part with an upper opening based on a pressure processing device, wherein the pressure processing device comprises an upper die set and a lower die set which can move relative to each other in an upward and downward direction, wherein the lower die set is used for placing a flow tooling on which a component to be processed is placed, and the upper die set is arranged above the lower die set, wherein the upper die set comprises a pressing structure, and the process method for laminating a flexible material comprises the following steps:

[0005] Placing the circulation tooling with the assembly to be processed on the lower die set;

[0006] Driving the upper die set or the lower die set to move, so that the pressing structure stretches the flexible material in the assembly to be processed downward and horizontally;

[0007] When the current drawing rate of the flexible material meets the preset conditions, the upper die set or the lower die set is driven to move to a mold closing state to obtain a finished assembly in which the flexible material and the inner surface of the shell part with an open upper end are bonded.

[0008] Optionally, the pressing structure includes a pressing block and a plurality of sliding parts, the pressing block can move in the up and down directions, the lower end surface of the pressing block is used to correspond to the bottom surface of the shell part, the plurality of sliding parts are arranged in sequence along the circumference of the pressing block, the plurality of sliding parts can move in the up and down directions, and the plurality of sliding parts have a movable stroke approaching or moving away from the pressing block, and the shapes of the plurality of sliding parts are used to adapt to the shell part to correspond to the peripheral side wall of the shell part and the curved surface section between the peripheral side wall and the bottom surface;

[0009] The step of driving the upper die set or the lower die set to move so that the pressing structure stretches the flexible material in the assembly to be processed includes:

[0010] Driving the upper die set to move, so that the pressing block and the plurality of sliding parts fall together, squeezing the flexible protective pad in the assembly to be processed, thereby stretching the middle part of the flexible material;

[0011] When the falling height of the upper mold group meets the first preset height value, the pressing block maintains the current position and continues to drive the upper mold group to move, and the multiple sliding parts move linearly in a direction away from the pressing block to squeeze the flexible protective pad in the assembly to be processed, thereby stretching the peripheral side of the flexible material.

[0012] Optionally, when the current drawing rate of the flexible material meets a preset condition, the step of driving the upper mold assembly or the lower mold assembly to move to a mold closing state to obtain a finished assembly in which the flexible material and the shell part with an open upper end are bonded comprises:

[0013] When the falling height of the upper die set meets the second preset height value, it is determined that the current drawing rate of the flexible material meets the preset condition;

[0014] The upper mold assembly is continuously driven to move, the pressing block moves downward, and the plurality of sliding parts move obliquely to continue squeezing the flexible protective pad so as to fit the flexible material to the bottom surface, side wall, and curved surface section of the shell part.

[0015] Optionally, the step of continuing to drive the upper mold assembly to move, the pressing block to move downward, and the plurality of sliding parts to interact obliquely to continue to squeeze the flexible protective pad to fit the flexible material to the shell part includes:

[0016] The flexible material is bonded to the bottom, side wall and curved surface of the shell part at the same time: or,

[0017] The flexible material is bonded to the bottom surface of the shell part first, and then to the side walls and curved sections: or,

[0018] The flexible material is first bonded to the side wall surface and the curved surface section of the shell part, and then bonded to the bottom surface.

[0019] Optionally, the preset condition is that the drawing rate satisfies 98.5%-99.5%.

[0020] Optionally, before the step of placing the flow tooling with the assembly to be processed on the lower die set, the step further includes:

[0021] Pre-stretching the flexible material;

[0022] The shell part before pasting, the pre-stretched flexible material and the flexible protective pad are sequentially mounted on the circulation tooling, wherein the shape of the flexible protective pad is adapted to the shell part.

[0023] Optionally, in the step of pre-stretching the flexible material, the flexible material is pre-stretched until the stretching rate meets 50%-70%.

[0024] Optionally, before the step of pre-stretching the flexible material, the step further includes:

[0025] Stick the adhesive backing to the corresponding position of the flexible material.

[0026] Optionally, before the step of pre-stretching the flexible material, the step further includes:

[0027] Cutting the roll material to obtain a sheet-like flexible material;

[0028] Punch holes into the sheet-like flexible material to facilitate positioning and assembly with the circulation tooling.

[0029] Optionally, when the current drawing rate of the flexible material meets a preset condition, the step of driving the upper mold assembly or the lower mold assembly to move to a mold closing state to obtain a finished assembly in which the flexible material and the shell part with an open upper end are bonded together further includes:

[0030] The flexible protective pads in the finished assembly are removed and the exposed flexible fabric is cut to remove waste material.

[0031] In the technical solution of the present invention, the stretching and bonding processes of the flexible material are completed in one processing station through pressure processing equipment. During the stretching process of the flexible material, the flexible material is always out of contact with the shell parts. When the preset conditions are met, the bonding is performed, which can effectively ensure the stretching effect of each part of the flexible material, so that the overall color displayed after bonding is uniform, and the yield rate is improved. At the same time, during the stretching and bonding process, the circulation tooling does not need to circulate between multiple stations, which shortens the process flow and improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of a process flow of an embodiment of a flexible material bonding process provided by the present invention;

[0034] Figure 2 for Figure 1 Flow chart of the process method for laminating medium and flexible materials;

[0035] Figure 3 A three-dimensional schematic diagram of the pressure processing equipment provided by the present invention;

[0036] Figure 4 for Figure 3 Schematic diagram of the cross section along AA;

[0037] Figure 5 for Figure 3 A three-dimensional schematic diagram of the cooperation of multiple sliding parts;

[0038] Figure 6 for Figure 3 Schematic diagram of the cooperation between the middle active part and the disc spring;

[0039] Figure 7 Schematic diagram of the change in the matching state between the flexible material and the shell parts.

[0040] Description of Figure Numbers:

[0041] Label name Label name 100 Pressure processing equipment 21 Pressed structure 1 Lower module 211 Briquetting 11 Second mounting base 212 Sliding part 12 Activities Department 2121 Chute 13 Disc spring 23 Elastic parts 2 Upper die set 3 Heating structure

[0042] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] It should be noted that if a directional indication is involved in the embodiment of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0046] With the development of the manufacturing industry, the requirements for product component assembly are getting higher and higher. The demand for product quality and shipment volume is also increasing day by day. In order to meet the process requirements of flexible and stretchable materials being attached to harder shell parts, it is necessary to stretch and coat the flexible and stretchable materials, and the finished parts must have uniform color. For example, for cloth, the warp and weft must be uniform and the base color of the shell must not show through. For example, for leather, the thickness must be uniform. The existing processing methods still have the above defects, resulting in a low yield rate. Therefore, the processing technology for flexible and stretchable materials to be attached to harder shell parts still needs to be continuously optimized and improved.

[0047] In view of this, the present invention provides a process method for bonding flexible materials, which first makes the elongation of the flexible material close to the final stretched shape, and then bonds the material to multiple parts of the shell parts, avoiding the defect of uneven stretching color caused by single local stretching, while simplifying the process steps. Figure 1 to Figure 2 and Figure 7 This is an embodiment of the flexible material bonding process provided by the present invention.

[0048] In order to achieve the bonding of the flexible material with the shell part with an open upper end, a pressure processing device 100 is proposed, please refer to Figure 3 to Figure 4The pressure processing equipment 100 includes a lower die set 1 and an upper die set 2. The lower die set 1 is used for placing a circulation tooling with a to-be-processed assembly. The upper die set 2 is arranged above the lower die set 1. The upper die set 2 and the lower die set 1 can move relative to each other in the up-and-down directions. The upper die set 2 includes a pressing structure 21. The pressing structure 21 can stretch the flexible material in the to-be-processed assembly during the relative movement of the upper die set 2 and the lower die set 1, and make the flexible material in the to-be-processed assembly fit with the shell part with an open upper end when the upper die set 2 and the lower die set 1 are closed.

[0049] In the technical solution of the present invention, during the process of the upper die set 2 and the lower die set 1 approaching each other, the pressing structure 21 stretches the flexible material as a whole, first making the elongation rate of the flexible material close to the final stretched shape, through the reasonable design of the structure, or the control of the distance between the upper die set 2 and the lower die set 1, during this period, the flexible material on the circulation tooling is stretched, but does not fit with the shell part, and the flexible material in the assembly to be processed and the shell part with the upper end open are fit when the upper die set 2 and the lower die set 1 move to the mold closing, so that the flexible material and the bottom surface, the peripheral side wall, and the curved surface section of the shell part can be completed by only one workstation by relying on the pressure processing equipment 100, which is convenient for ensuring the uniform color of the flexible material after stretching and improving the yield rate. At the same time, there is no need to separately design multiple scattered processes to complete multiple stretching and laminating actions, which reduces the number of workstations, saves manpower and space, and takes shorter processing time.

[0050] It is understandable that the pressing structure 21 can be designed according to actual processing requirements. In this embodiment, the entire inner surface of the shell part is covered. Considering the shape of the shell part, please refer to Figure 5The pressing structure 21 includes a pressing block 211 and a plurality of sliding parts 212. The pressing block 211 can move in the up and down directions. The lower end surface of the pressing block 211 is used to correspond to the bottom surface of the shell part. The plurality of sliding parts 212 are arranged in sequence along the circumference of the pressing block 211. The plurality of sliding parts 212 can move in the up and down directions, and the plurality of sliding parts 212 have a movable stroke close to or away from the pressing block 211. The shape of the plurality of sliding parts 212 is used to adapt to the shell part to correspond to the peripheral side wall of the shell part and the curved surface segment between the peripheral side wall and the bottom surface. The pressing block 211 and the plurality of sliding parts 212 can both move in the up and down directions, and the plurality of sliding parts 212 can also move linearly relative to the pressing block 211. The plurality of sliding parts 212 are contoured, corresponding to the peripheral side walls and curved surface segments of the shell parts, and their main function is to stretch and cover the side of the flexible material. The lower end surface of the pressing block 211 remains flat, and its main function is to stretch and cover the middle of the flexible material. In the mold closing process, as the upper mold assembly 2 falls, the pressing block 211 and the The multiple sliding parts 212 first move downward together, and then contact the flexible material. At this time, the multiple sliding parts 212 move in the direction away from the pressing block 211. The pressing block 211 can continue to move downward or maintain its height. As the upper mold assembly 2 continues to fall, since each of the sliding parts 212 moves relative to the pressing block 211 and moves up and down, the entire mold moves diagonally from top to bottom away from the center. The pressing block 211 continues to move downward, so that the stretched flexible material can be driven to fit the shell parts accordingly when the mold is closed. The mold is opened after being closed for a period of time. During the mold opening process, the sliding parts 212 should move in the direction close to the pressing block 211 to reset.

[0051] It should be noted that the present invention does not limit the specific material of the flexible material, and can be a flexible material with ductility such as microfiber cloth, leather, etc. The upper end of the shell part is open, which refers to the shape of the shell when it swings on the circulation tooling. Its direction in actual use is not limited, and the specific material of the shell part is not limited. The following takes the flexible cloth attached to the plastic mobile phone shell as an example to explain the process method.

[0052] Based on the structure of the above-mentioned pressure processing equipment 100, please refer to Figure 1 to Figure 2 The process for bonding the flexible material comprises the following steps:

[0053] S10: placing the circulation tooling with the assembly to be processed on the lower die set 1;

[0054] It is understandable that the installation of circulation tooling can be done directly by manual labor, or it can be directly transferred to the current process for processing using facilities such as conveyor belts and robots after the previous process is completed. When installing the circulation tooling, attention should be paid to the placement of the circulation tooling.

[0055] S20: driving the upper die set 2 or the lower die set 1 to move, so that the pressing structure 21 stretches the flexible material in the assembly to be processed downward and horizontally;

[0056] It can be understood that this process is the stretching of the flexible material, and its purpose is to stretch the flexible material as much as possible before laminating so that it can be laminating in a relatively complete stretched state, thereby avoiding appearance defects caused by local laminating and then stretching. Specifically, the position where the flexible material is laminating cannot be stretched further due to the effect of the adhesive, and the unlaminated part is prone to have a different density of fabric from the previously laminating position after stretching, that is, the gap between the warp and weft of the fabric is different. From the appearance, the density may be uneven, and even the base color of the plastic mobile phone case may be exposed.

[0057] S30: When the current drawing rate of the flexible material meets the preset conditions, the upper die set 2 or the lower die set 1 is driven to move to a mold closing state to obtain a finished assembly in which the flexible material and the inner surface of the shell part with an open upper end are bonded.

[0058] In the technical solution of the present invention, the stretching and bonding processes of the flexible material are completed in one processing station through the pressure processing equipment 100. During the stretching process of the flexible material, the flexible material is always out of contact with the shell parts. When the preset conditions are met, the bonding is performed. The stretching effect of each part of the flexible material can be effectively guaranteed, so that the overall color after bonding is uniform, and the yield rate is improved. At the same time, during the stretching and bonding process, the circulation tooling does not need to circulate between multiple stations, which shortens the process flow and improves the processing efficiency.

[0059] Further, based on the specific structural form of the pressed structure 21, step S20 includes:

[0060] S21: driving the upper die set 2 to move, so that the pressing block 211 and the plurality of sliding parts 212 fall together, squeezing the flexible protective pad in the assembly to be processed, thereby stretching the middle part of the flexible material;

[0061] It should be noted that in order to prevent the mold structure from scratching the material during the stretching and laminating process, a protective pad is generally installed between the material and the mold structure. The force of the pressing structure 21 is first applied to the protective pad and then to the flexible material. The flexible material will undergo permanent deformation, and the protective pad will restore its original shape after the pressing structure 21 is detached.

[0062] It is understandable that during this process, the pressing block 211 and the plurality of sliding parts 212 maintain synchronous movement, and their relative positions remain unchanged, forming a whole, which can stretch the middle part of the flexible material, that is, the position corresponding to the bottom surface of the shell part.

[0063] S22: When the falling height of the upper mold assembly 2 meets the first preset height value, the pressing block 211 maintains the current position and continues to drive the upper mold assembly 2 to move, and the multiple sliding parts 212 move linearly in a direction away from the pressing block 211 to squeeze the flexible protective pad in the assembly to be processed, thereby stretching the peripheral side of the flexible material.

[0064] As the falling height of the upper mold assembly 2 gradually increases and meets the first preset height value, the height of the pressing block 211 remains unchanged temporarily to ensure that only a gap is left between the flexible material and the shell parts. During this process, the multiple sliding parts 212 move in a straight line to stretch the peripheral side of the flexible material. Due to the contoured design of the sliding part 212, the flexible material can be stretched to obtain a shape that matches the curved surface segment and side wall of the shell parts.

[0065] It is understandable that when the falling height of the upper mold assembly 2 meets the first preset height value, since the heights of the pressing block 211 and the sliding portion 212 do not change, a certain gap is always maintained between the inner surface of the housing part and the flexible material, thereby achieving the process effect of first stretching the flexible material in the mold and then fitting the entire material.

[0066] Specifically, the first preset height value can be determined according to the actual mold structure design, and the contact between each part and the lower mold assembly 1 can be achieved one by one by designing a spring structure in the mold structure.

[0067] Further, in step S30,

[0068] S31: When the falling height of the upper die set 2 meets the second preset height value, it is determined that the current drawing rate of the flexible material meets the preset condition;

[0069] It can be understood that the first preset height value and the second preset height value both refer to the falling distance of the upper mold group 2. For example, the top plate of the upper mold group 2 is set to fall 29 cm, that is, to close the mold with the lower mold group 1. When it falls 20 cm, the first preset height value is met, and it continues to fall until the top plate as a whole falls 28 cm to meet the second preset height value. During this falling process, the flexible material always remains out of contact with the shell parts.

[0070] S32: Continue to drive the upper mold assembly 2 to move, the pressing block 211 moves downward, and the plurality of sliding parts 212 move obliquely to continue to squeeze the flexible protective pad so as to fit the flexible material to the bottom surface, side wall, and curved surface section of the shell part.

[0071] It is understandable that at this time, the sliding portion 212 has a downward movement tendency, and the sliding portion 212 simultaneously moves away from the pressing block 211, so the sliding portion 212 has an oblique movement stroke, which can press against the side wall and curved surface section of the shell part when the mold is closed, and the pressing block 211 makes a falling movement to press the bottom surface of the shell part, thereby covering the places where the flexible material has been stretched.

[0072] Incorporating it into the specific structure, please refer to Figure 6 The lower mold assembly 1 includes a second mounting base 11 and a plurality of movable parts 12. The upper surface of the second mounting base 11 is provided with a plurality of grooves. Each of the movable parts 12 is movably mounted in the grooves and has a raised position protruding from the grooves and an avoidance position in the grooves; the upper mold assembly 2 includes a first mounting base and a first mounting frame. The middle part of the lower end surface of the first mounting base is provided for the installation of the pressure block 211; the first mounting frame is located below the first mounting base and can be elastically installed on the first mounting base, and is arranged in an annular shape for the pressure block 211 to be movably passed through. The first mounting frame is provided for the installation of the plurality of sliding parts 212; the first mounting frame can be installed by means of transverse and longitudinal positioning holes, guide sliders, hanging cooperation, etc., which are not limited here. As the upper mold assembly 2 continues to fall, at the beginning, the first mounting frame and the first mounting base fall together, that is, the pressing block 211 and the sliding part 212 fall synchronously, as the upper mold assembly 2 partially contacts the movable part 12 and reaches a first preset height value, the upper mold assembly 2 continues to fall and needs to overcome the resistance of the movable part 12. Due to the elastic connection between the first mounting frame and the first mounting base, during the continued falling process of the upper mold assembly 2, the corresponding elastic mounting structure is first compressed. At this time, the position of the pressing block 211 is fixed, and the multiple sliding parts 212 move horizontally away from the pressing block 211. When the elastic mounting structure is compressed The force applied by the upper mold assembly 2 and the resistance of the movable part 12 are balanced to meet the second preset height value. During this process, due to the cushioning effect of the movable part 12, the height of the pressing block 211 and the sliding part 212 is always limited, thereby ensuring that the flexible material does not fit with the shell parts and always maintains a distance. When the upper mold assembly 2 continues to fall, the movable part 12 is squeezed and transformed from the cushioned position to the avoidance position. During this process, the pressing block 211 moves downward as a whole, and the sliding part 212 moves obliquely. When the movable part 12 is completely received in the groove, the upper mold assembly 2 and the lower mold assembly 1 are closed to make the flexible material in the assembly to be processed fit with the shell parts, completing the whole process.

[0073] It is understandable that the flexible material and the shell parts are usually bonded together by glue, which can be coated on the shell parts or on the flexible material. Therefore, the pressure processing equipment 100 also needs to be provided with a heating structure 3 to achieve local heating to activate the glue by hot pressing.

[0074] Furthermore, when pressing in step S30, there are three processing situations, which are as follows:

[0075] The flexible material is bonded to the bottom, sidewall and curved surface of the shell parts at the same time:

[0076] The flexible material is first bonded to the bottom surface of the shell part, and then to the side walls and curved segments:

[0077] The flexible material is first bonded to the side wall surface and the curved surface section of the shell part, and then bonded to the bottom surface.

[0078] For flexible materials of different materials, shell parts of different materials, and the differences in the appearance of shell parts, when processing different products, the above three processing conditions will have different effects in different products. Therefore, it is necessary to achieve different fitting sequences by selecting the specifications of the disc spring 13 in the pressure processing equipment 100 and designing the pre-load amount, so as to adapt to different products and ensure the best fitting effect.

[0079] Further, the preset condition is that the drawing rate satisfies 98.5%-99.5%. The preferred preset condition is that the drawing rate of the flexible material satisfies 99%, that is, in step S20, the flexible material is first extended to a 99% extension state close to the final shape, and then bonded in step S30. Since bonding itself involves a small downward pressing action stroke, the remaining drawing part will be completed during the bonding process.

[0080] Furthermore, before step S10, the flexible material is prepared, which specifically includes the following steps:

[0081] Pre-stretching the flexible material;

[0082] It is understandable that the downward pressing stroke of the pressure processing equipment 100 is limited and is restricted by the depth of the shell parts. Therefore, the flexible material will be pre-stretched to avoid processing failure caused by insufficient stretching in step S20. The present invention does not limit the method adopted in the pre-stretching step, and the flexible material can be pre-stretched separately at a temperature of 50-80°C through other independent pre-stretching molds.

[0083] The shell parts before pasting, the pre-stretched flexible materials and the flexible protective pads are installed on the circulation tooling in sequence.

[0084] Among them, the shape of the flexible protective pad is adapted to the shell parts. Since in the bonding method of the present invention, stretching and laminating are performed only by one device, a flexible protective pad with a contoured setting is selected to improve the adaptation effect with the shell parts, provide less resistance during the mold pressing process, and play a role in protecting the flexible material. It can be understood that since the stretched state of the flexible material has not reached the final state at the beginning, it will cause squeezing of the protective pad, causing it to deform after installation, which does not affect the use effect.

[0085] Specifically, the flexible material is pre-stretched until the stretching rate reaches 50%-70%, preferably 60%.

[0086] Furthermore, the step of pre-stretching the flexible material also includes:

[0087] Stick the adhesive backing to the corresponding position of the flexible material.

[0088] That is, the present application adheres glue on the surface of the flexible material. The adhesive itself has a certain hardness, but is not sticky. It can be first applied to the surface of the flexible material, and then partially activated by a heat press machine so that it can be tightly connected to the flexible material. This is because the shell parts have a specific shape, which makes it inconvenient to adhere the adhesive. The flexible material has a flat structure, and the adhesive can be applied through a heat press machine without affecting the subsequent stretching.

[0089] It is further explained that the adhesive backing is pasted at the position corresponding to the flexible material. It can be understood that as long as the position corresponding to the flexible material is made sticky, there is no specific restriction on what kind of sticky material makes the flexible material sticky.

[0090] It is understandable that the glue coating area of ​​the flexible material should be larger than the overall area of ​​the inner surface of the shell part, so as to avoid the situation of local glue coating abnormality caused by positioning deviation.

[0091] Furthermore, the step of pre-stretching the flexible material also includes:

[0092] Cutting the roll material to obtain a sheet-like flexible material;

[0093] Materials are also purchased in the form of coils and need to be processed by cutting machines and other equipment before they can be used.

[0094] Punch holes into the sheet-like flexible material to facilitate positioning and assembly with the circulation tooling.

[0095] Specifically, the sheet-like flexible material is installed on the circulation tooling through positioning pins or clamps. In this way, the position where the circulation tooling is connected to the edge of the flexible material can always provide a tensioning force on the flexible material, which can avoid the flexible material being too close to the cavity. The position of the punching needs to be reasonably designed considering the elongation of the material.

[0096] Furthermore, after step S30, the following steps are further included:

[0097] The flexible protective pads in the finished assembly are removed and the exposed flexible fabric is cut to remove waste material.

[0098] Specifically, it uses laser cutting around the edges, and the excess fabric is manually cut off and removed manually.

[0099] In addition, before processing, the flexible material is plasma treated, and after the excess material is cut off, the side walls of the shell parts are laminated for the second time.

[0100] For details, please refer to Figure 2 In one embodiment of the present invention, the coil is cut to obtain a sheet of flexible material, and then the sheet of flexible material is punched so that it can be adapted to the positioning structure on the circulation tooling, and a certain adhesive is pasted on the corresponding position of the flexible material, and the adhesive is activated by a heat press machine so that it can be firmly adhered to the flexible material, and then the flexible material is pre-stretched by an independent pre-stretching mold to achieve a stretching rate of 60%, and then the shell parts before pasting, the pre-stretched flexible material and the flexible protective pad are sequentially installed on the circulation tooling to obtain the assembly to be processed, and the material of the flexible protective pad is preferably a silicone pad. The previous process is completed, please refer to Figure 7 Then, the circulation tooling is placed in the pressure processing equipment, and it is first stretched to the maximum extent in the mold. Finally, when the mold is closed, the flexible material and the various parts of the shell parts are almost simultaneously fitted. The combination of hot pressing makes the back glue fully activated. The thickness change of the back glue is integrated with the flexible material and fits tightly with the shell parts to complete the fitting step. Then the flexible protective cover is removed, and the exposed flexible fabric is cut to remove the excess fabric to obtain the final product.

[0101] The present invention integrates multiple processing stations, uses flexible and extensible stretchable fabric to first stretch to a shape close to the final form, and then simultaneously performs lamination of the bottom surface, curved surface section, side wall and other areas of the shell part. This avoids the situation where the stretch rate of the fabric is uneven due to the local stretching and lamination of a single station, thereby causing uneven density of the warp and weft of the fabric, saves the number of workstations, and shortens the process steps.

[0102] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A process for laminating flexible materials, characterized in that: The flexible material is bonded to the shell part with an upper opening based on the pressure processing equipment, the pressure processing equipment includes an upper die set and a lower die set that can move relative to each other in the up-down direction, the lower die set is used for placing the flow tooling with the assembly to be processed, the upper die set is arranged above the lower die set, the upper die set includes a pressing structure, and the process method of bonding the flexible material includes the following steps: Placing the circulation tooling with the assembly to be processed on the lower die set; The upper die set or the lower die set is driven to move, so that the pressing structure stretches the flexible material in the assembly to be processed downward and horizontally, and during the stretching process of the flexible material, the flexible material does not contact the shell part at all times; When the current drawing rate of the flexible material meets the preset conditions, the upper die set or the lower die set is driven to move to a mold closing state to obtain a finished assembly in which the flexible material and the inner surface of the shell part with an open upper end are bonded.

2. The flexible material bonding process according to claim 1, characterized in that: The pressing structure includes a pressing block and a plurality of sliding parts, the pressing block can move in the up and down directions, the lower end surface of the pressing block is used to correspond to the bottom surface of the shell part, the plurality of sliding parts are arranged in sequence along the circumference of the pressing block, the plurality of sliding parts can move in the up and down directions, and the plurality of sliding parts have a movable stroke close to or away from the pressing block, and the shape of the plurality of sliding parts is used to adapt to the shell part to correspond to the peripheral side wall of the shell part and the curved surface section between the peripheral side wall and the bottom surface; The step of driving the upper die set or the lower die set to move so that the pressing structure stretches the flexible material in the assembly to be processed includes: Driving the upper die set to move, so that the pressing block and the plurality of sliding parts fall together, squeezing the flexible protective pad in the assembly to be processed, thereby stretching the middle part of the flexible material; When the falling height of the upper mold group meets the first preset height value, the pressing block maintains the current position and continues to drive the upper mold group to move, and the multiple sliding parts move linearly in a direction away from the pressing block to squeeze the flexible protective pad in the assembly to be processed, thereby stretching the peripheral side of the flexible material.

3. The flexible material bonding process as claimed in claim 2, characterized in that: When the current drawing rate of the flexible material meets the preset condition, the steps of driving the upper die set or the lower die set to move to a mold closing state to obtain a finished assembly in which the flexible material and the shell part with an open upper end are bonded include: When the falling height of the upper die set meets the second preset height value, it is determined that the current drawing rate of the flexible material meets the preset condition; The upper mold assembly is continuously driven to move, the pressing block moves downward, and the plurality of sliding parts move obliquely to continue squeezing the flexible protective pad so as to fit the flexible material to the bottom surface, side wall, and curved surface section of the shell part.

4. The flexible material bonding process as claimed in claim 3, characterized in that: The steps of continuing to drive the upper mold assembly to move, the pressing block to move downward, and the plurality of sliding parts to interact obliquely to continue to squeeze the flexible protective pad to fit the flexible material to the shell part include: The flexible material is bonded to the bottom, side wall and curved surface of the shell part at the same time: or, The flexible material is bonded to the bottom surface of the shell part first, and then to the side walls and curved sections: or, The flexible material is first bonded to the side wall surface and the curved surface section of the shell part, and then bonded to the bottom surface.

5. The flexible material bonding process according to claim 1, characterized in that: The preset condition is that the drawing rate meets 98.5%-99.5%.

6. The flexible material bonding process according to claim 1, characterized in that: Before the step of placing the circulation tooling with the assembly to be processed on the lower die set, the step further includes: Pre-stretching the flexible material; The shell part before pasting, the pre-stretched flexible material and the flexible protective pad are sequentially mounted on the circulation tooling, wherein the shape of the flexible protective pad is adapted to the shell part.

7. The flexible material bonding process as claimed in claim 6, characterized in that: In the step of pre-stretching the flexible material, the flexible material is pre-stretched until the stretching rate meets 50%-70%.

8. The flexible material bonding process as claimed in claim 6, characterized in that: The step of pre-stretching the flexible material also includes: Stick the adhesive backing to the corresponding position of the flexible material.

9. The flexible material bonding process according to claim 6, characterized in that: Before the step of pre-stretching the flexible material, the following steps are also included: Cutting the roll material to obtain a sheet-like flexible material; Punch holes into the sheet-like flexible material to facilitate positioning and assembly with the circulation tooling.

10. The flexible material bonding process according to claim 1, characterized in that: When the current drawing rate of the flexible material meets the preset condition, the upper mold assembly or the lower mold assembly is driven to move to a mold closing state to obtain a finished assembly in which the flexible material and the shell part with an open upper end are bonded together, and the step further includes: The flexible protective pads in the finished assembly are removed and the exposed flexible fabric is cut to remove waste material.

Images