Vacuum attaching jig

Abstract

The utility model relates to the technical field of foam processing jigs, in particular to a vacuum attaching jig, which is characterized in that the vacuum attaching jig comprises a lower die, the top of the lower die is provided with a lower profiling groove of which the opening outline is matched with the outline of foam and a sheet, an airflow channel is arranged in a penetrating manner, and the bottom of the lower profiling groove is communicated with the outside through the airflow channel; the vacuum generation assembly is communicated with the airflow channel, and the vacuum generation assembly forms vacuum negative pressure for adsorbing the sheets at the bottom of the lower profiling groove through the airflow channel; the upper mold is movably arranged at the top of the lower mold in a covering mode and provided with an upper profiling groove, when the upper mold is arranged on the lower mold in a covering mode, the lower profiling groove and the upper profiling groove form a pressure maintaining cavity, the upper mold and the lower mold enable foam and a sheet to be tightly attached into the pressure maintaining cavity, and the machining accuracy in the foam attaching process can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foam processing jigs, in particular to a vacuum attachment jig. Background Art

[0002] Foam is a material formed by foaming plastic particles. It can be divided into PU foam, anti-static foam, conductive foam, anti-static EPE, etc. according to the material. It is widely used in footwear, furniture manufacturing and smart wearable products because of its elasticity, light weight, fast pressure-sensitive fixation, easy use, easy bending, ultra-thin volume, reliable performance and other characteristics.

[0003] Usually, some foam products need to have a layer of EVA sheet attached to the surface to provide structural support or anti-static effect. Currently, foam is usually attached to EVA by manual attachment, which has the risk of misalignment and the processing effect is not good, so there is still much room for improvement. Utility Model Content

[0004] The utility model provides a vacuum attachment jig to optimize the processing accuracy during the foam attachment process.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A vacuum attachment jig comprises a lower mold, the top of which is provided with a lower contour groove whose opening contour matches the contour of foam and sheet material, and an air flow channel is provided through the lower mold, the air flow channel connects the bottom of the lower contour groove with the outside; a vacuum generating component is connected with the air flow channel, the vacuum generating component forms a vacuum negative pressure for adsorbing the sheet material at the bottom of the lower contour groove via the air flow channel; and an upper mold, the movable cover is provided on the top of the lower mold, and has an upper contour groove, when the upper mold cover is provided on the lower mold, the lower contour groove and the upper contour groove form a pressure-keeping cavity, and the upper mold and the lower mold tightly fit the foam and sheet material in the pressure-keeping cavity.

[0007] Preferably, the lower mold includes: a seat plate with a positioning recess on the top; and a template member, the lower contour groove is provided on the top of the template member, the template member is removable and placed in the positioning recess, the positioning recess is adapted to the contour of the template member, and is used to circumferentially limit the seat plate.

[0008] Preferably, a first inclined surface is provided on the side of the template member, and a second inclined surface wedged with the first inclined surface is provided on the inner edge of the positioning recess.

[0009] Preferably, a handle is fixedly provided on one side of the template member, an opening is provided on one side of the positioning recess for the handle to pass through, a limiting block is fixedly provided at a position of the seat plate close to the side opening, and the limiting block abuts against the template member for limiting position.

[0010] Preferably, the airflow channel comprises a first section and a second section which are interconnected, the first section is arranged on the template member, and the second section is arranged on the seat plate.

[0011] Preferably, a sealing ring is provided between the seat plate and the template member, and the sealing ring is arranged around a connecting position between the first section and the second section.

[0012] Preferably, there are multiple groups of the lower contour grooves and the upper contour grooves that cooperate with each other to form a plurality of the pressure-maintaining cavities, and the plurality of the pressure-maintaining cavities are evenly arranged at the lower mold and the upper mold.

[0013] Preferably, it also includes a stripper rod, one end of which is rotatably disposed on the lower mold, and the stripper rod passes through the lower contour groove; the lower mold is provided with a receiving groove for accommodating the stripper rod, and when the stripper rod is located in the receiving groove, the top of the stripper rod is flush with the bottom of the lower contour groove, so that the sheet and foam can be placed above the stripper rod.

[0014] Preferably, one side of the upper mold is rotatably disposed on the lower mold, so that the upper mold is flipped and covered on the lower mold.

[0015] Preferably, an electromagnet module is provided at the upper mold or the lower mold, and the electromagnet module is used to magnetically fix the upper mold and the lower mold to each other.

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

[0017] 1. During the processing, the sheet can be placed in the lower profiling groove first. At this time, under the action of the vacuum generating assembly and the airflow channel, the sheet is adsorbed and tightly attached to the lower mold. Then the foam is placed in the lower square groove. Under the circumferential positioning of the lower profiling groove, the sheet and the foam are not easy to deviate, and the mutual fitting accuracy of the two is guaranteed. Then the upper mold is covered on the lower mold. Under the downward pressure of the upper mold, the sheet and the foam are tightly fitted in the pressure-holding cavity. Compared with the manual alignment and fitting method, the fitting accuracy of this scheme is significantly improved, and the processing accuracy during the foam attachment process is significantly optimized and improved;

[0018] 2. Since there are multiple pressure-holding cavities, multiple products can be processed at one time, and the overall processing is efficient. At the same time, the lower mold is set as a detachable template and seat plate. During the processing, the template can be taken out from the seat plate, and then the finished product can be cut in a centralized manner, which is simple and convenient to use;

[0019] 3. The electromagnet module can ensure that the upper mold and the lower mold have good closing force, and the two are not easy to loosen, which is conducive to the close fitting of the foam and the sheet, and the quality of the finished product is optimized and guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the structure of a vacuum attachment fixture provided by a preferred embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of the assembly relationship between the seat plate and the template member provided in a preferred embodiment of the utility model;

[0023] Figure 3 This is a structural schematic diagram of a stripping rod provided by a preferred embodiment of the utility model in an open state compared to the template member;

[0024] Figure 4 It is a structural schematic diagram of an upper mold provided by a preferred embodiment of the utility model;

[0025] Figure 5 It is a cross-sectional view of a template member provided by a preferred embodiment of the utility model;

[0026] Figure 6 It is a cross-sectional view of a seat plate provided by a preferred embodiment of the utility model.

[0027] Reference numerals:

[0028] 1. Upper die; 11. Upper profiling groove;

[0029] 2. lower mold; 21. seat plate; 211. positioning recess; 212. second inclined surface; 22. template member; 221. lower contour groove; 222. first inclined surface;

[0030] 3. Handle; 4. Limit block; 5. Stripping rod;

[0031] 6. air flow channel; 61. first section; 611. first cavity; 612. first connection hole; 613. second connection hole; 62. second section; 621. second cavity; 622. third connection hole; 623. air outlet;

[0032] 7. Sealing ring. DETAILED DESCRIPTION

[0033] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the embodiment described below is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present utility model, it is to be understood that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centrally arranged component at the same time.

[0035] The following is combined with Figure 1-Figure 6 The technical solution of the utility model is further illustrated by specific implementation methods.

[0036] Reference Figure 1 The vacuum attachment jig mainly includes an upper mold 1 and a lower mold 2. The EVA sheet (hereinafter referred to as the sheet) and the foam are placed in the lower mold 2. The lower mold 2 is responsible for positioning the sheet and the foam to reduce the possibility of deviation between the two during attachment. After the sheet and the foam are placed, the upper mold 1 is covered on the lower mold 2. The upper mold 1 applies pressure to the sheet and the foam to make the two fit each other.

[0037] Reference Figure 2 In order to place the sheet and foam, the top of the lower mold 2 is provided with a lower contour groove 221 whose opening contour is adapted to the foam and sheet contours. Specifically, the lower mold 2 mainly includes a seat plate 21 and a template member 22 detachably arranged on the seat plate 21, wherein the seat plate 21 mainly plays a supporting and pressure-bearing role. In this embodiment, the seat plate 21 has a rectangular plate-shaped contour. The seat plate 21 is usually arranged horizontally when it is arranged. Two support foot blocks are fixedly installed at the bottom positions on both sides of the seat plate 21. The seat plate 21 is fixedly installed on an installation carrier such as a mounting table, a mounting frame, etc. through the support foot blocks. The support foot blocks also suspend the seat plate 21 to facilitate subsequent structural assembly.

[0038] At the same time, a positioning recess 211 is provided in the top recess of the seat plate 21. The positioning recess 211 is used to position the template member 22. Accordingly, the outer edge contour of the template member 22 needs to be matched with the contour of the positioning recess 211. The contour of the positioning recess 211 is a rectangular contour in this embodiment. Accordingly, the contour of the template member 22 is adapted to adopt a rectangular plate structure in this embodiment. At this time, the template member 22 can be placed horizontally in the positioning recess 211. The positioning recess 211 supports the periphery of the template member 22 so that the template member 22 is positioned circumferentially.

[0039] Further, continue to refer to Figure 2 In order to improve the stability of the template member 22 when it is placed, a first inclined surface 222 is provided on the side of the template member 22, and the first inclined surface 222 is inclined from bottom to top toward the outside, and at this time, a V-shaped profile is formed on the opposite sides of the template member 22; accordingly, a second inclined surface 212 is provided at the inner edge of the positioning recess 211, and the second inclined surface 212 is inclined from bottom to top toward the outside of the seat plate 21, so that the opposite sides of the positioning recess 211 form a flared profile; at this time, the template member 22 is placed in the positioning recess 211, and the first inclined surface 222 and the second inclined surface 212 are wedged with each other. As the upper mold 1 presses down the lower mold 2, the template member 22 will become more and more stable on the seat plate 21, which is equivalent to giving the template member 22 a stable supporting force, so that the template member 22 is not easy to shake or deviate at will when placed, providing stable processing conditions for subsequent bonding actions.

[0040] It should be noted that, in other embodiments, the specific shapes and contours of the seat plate 21 and the template member 22 can be adjusted according to actual needs, such as being adjusted to a triangular contour, a circular contour or a trapezoidal contour, etc. There is no restriction on the specific contours of the seat plate 21 and the template member 22. No matter what contour is adopted, it should be included in the scope of interpretation of the seat plate 21 and the template member 22.

[0041] Furthermore, in order to achieve the positioning function, the lower profiling groove 221 is specifically recessed and arranged at the top of the template member 22, and the contour of the lower profiling groove 221 should be adapted to the contour of the product; for example, when it is necessary to attach and process the foam and sheet parts with a long strip contour, the lower profiling groove 221 needs to be adapted to the corresponding long strip contour. For details, please refer to Figure 2 Based on this, the sheet and the foam are placed in the lower profiling groove 221. With the support of the bottom wall of the lower profiling groove 221 and the groove wall in the circumferential direction, the sheet and the foam achieve mutual positioning, and the two are not easily offset to ensure good mutual precision.

[0042] Replay Figure 1After the sheet and foam are placed, the upper mold 1 needs to be covered on the lower mold 2 for pressing; specifically, in this embodiment, the upper mold 1 is arranged in a rectangular plate-like structure, and the size of the upper mold 1 should be larger than the size of the template part 22. Such a setting can fully cover the template part 22 and realize all-round pressing.

[0043] Furthermore, in order to improve the pressing accuracy between the upper mold 1 and the lower mold 2, the upper mold 1 is rotatably installed on the base plate 21. Specifically, in the present embodiment, the upper mold 1 and the base plate 21 are rotatably connected by installing a hinge. In other embodiments, the upper mold 1 can also be rotatably connected by adding a rotating shaft. Any method that can realize the rotatable setting can be tried without specific limitation.

[0044] Here, one side of the upper mold 1 is connected to one side of the base plate 21. At this time, the upper mold 1 can just cover the template part 22, and the position is fixed to achieve precise covering. At the same time, an upper profiling groove 11 is also recessed at the bottom of the upper mold 1. The position and opening contour of the upper profiling groove 11 correspond to the lower profiling groove 221. When the upper mold 1 is covered on the lower mold 2, the lower profiling groove 221 and the upper profiling groove 11 form a pressure-keeping cavity. The upper mold 1 and the lower mold 2 tightly fit the foam and the sheet in the pressure-keeping cavity. After a period of covering, a finished product can be obtained. Then the template part 22 can be taken out from the base plate 21, and the finished product can be directly poured out to achieve material discharge, which is convenient to use.

[0045] In addition, refer to Figure 2 and Figure 3 In order to facilitate the user to take out the template, a handle 3 is fixedly installed on one side of the template member 22. Accordingly, the positioning recess 211 is opened on one side of the seat plate 21, so that when the template member 22 is placed in the positioning recess 211, the handle 3 can pass through the opening on one side of the positioning recess 211 to the outside of the seat plate 21, playing a role of avoidance. However, if the positioning recess 211 is opened on one side of the seat plate 21, it may cause the template member 22 to slide out at the opening on the side; based on this, a limit block 4 is fixedly installed on the seat plate 21, and the limit block 4 is located at the side opening of the positioning recess 211, and the limit block 4 is abutted against one side of the template member 22 to limit the template member 22 from loosening from the side opening of the positioning recess 211. At this time, the user can not only conveniently take out the template member 22 through the handle 3, but also stably place the template member 22 in the positioning recess 211, and the structure is stable and easy to use.

[0046] Reference Figure 1 Combined with Figure 4In order to improve the overall processing efficiency, the lower profiling grooves 221 and the upper profiling grooves 11 that cooperate with each other can be set as multiple groups, so as to form multiple pressure-keeping cavities, which are used to simultaneously perform bonding processing on multiple pairs of sheets and foams. For example, in the present embodiment, the lower profiling grooves 221 and the upper profiling grooves 11 that correspond to and cooperate with each other are set as twelve groups, and the twelve groups of upper profiling grooves 11 and lower profiling grooves 221 are evenly arranged on the template member 22; wherein, the twelve groups of lower profiling grooves 221 are divided into two rows, and the upper profiling grooves 11 can be combined into six groups, one upper profiling groove 11 corresponds to two lower profiling grooves 221, and 12 pressure-keeping cavities are formed by combination, so that 12 products can be bonded and processed at one time, and the processing efficiency is significantly optimized and improved.

[0047] It should be noted that the pressure-holding chambers can also be 20 groups, 30 groups or 40 groups, etc., and there is no restriction on the specific number thereof. In addition, in other embodiments, the contoured grooves can be arranged in a circular array, a triangular array or the like, or can be adjusted to an irregular arrangement according to different product requirements. Regardless of the specific arrangement of the pressure-holding chambers, they should be included in the interpretation scope of the feature of uniform arrangement.

[0048] Replay Figure 3 After the attachment action is completed, the finished product usually remains in the template member 22 and is not easy to be taken out. At this time, in order to facilitate the removal of the finished product, the fixture further includes a stripper rod 5, one end of which is rotatably arranged on the lower mold 2. Specifically, in this embodiment, one end of the stripper rod 5 is hingedly mounted on one side of the top of the template member 22 through a rotating shaft, and the stripper rod 5 spans the entire template member 22, so that the other end of the stripper rod 5 extends to the other side of the template member 22. At this time, the stripper rod 5 spanning the template member 22 passes through a plurality of lower contoured grooves 221 at the same time.

[0049] The top of the template part 22 is recessed with a receiving groove, which is used to accommodate the stripping rod 5. In the specific setting, the receiving groove is open at the bottom of the lower contour groove 221. At this time, the stripping rod 5 can be rotated and embedded in the receiving groove to achieve accommodation; further, the opening profile and depth of the receiving groove need to be adapted to the thickness of the stripping rod 5.

[0050] Through the above-mentioned arrangement, the top of the stripping rod 5 located in the accommodating groove can be flush with the bottom of the lower contour groove 221, and thus will not affect the normal placement of the sheet into the lower contour groove 221. Moreover, when the sheet and foam are placed into the lower square groove, and when the stripping rod 5 is located inside the accommodating groove, because the stripping rod 5 passes through several lower contour grooves 221 at the same time, parts of the sheet and foam will also be placed above the stripping rod 5. When the fitting action is completed, the finished product can be taken out by flipping the stripping rod 5 upwards, and the use process is convenient and quick.

[0051] It should be noted that when there are multiple lower profiling grooves 221, the stripping rod 5 needs to pass through each lower profiling groove 221 as much as possible. For example, in the present embodiment, the stripping rod 5 passes through the middle of two rows of lower profiling grooves 221 to push out each product, and the structural arrangement is reasonable.

[0052] Furthermore, when the upper mold 1 is covering the lower mold 2, it is necessary to maintain pressure for a period of time to ensure that the foam and the sheet can be tightly attached. The structure of the upper cover is usually relatively thin. If it is pressed together by its own weight, the adhesion strength will be insufficient. Based on this, an electromagnet module (not marked in the figure) can be installed at the upper mold 1 or the lower mold 2; in the specific setting process, the upper mold 1 and the lower mold 2 can be made of metal materials that can be magnetically attracted, such as iron, nickel, cobalt, etc. At this time, in one of the installation methods, the electromagnet module can be installed at the upper mold 1 or the lower mold 2, and the mutual magnetic attraction effect between the upper mold 1 and the lower mold 2 can be achieved by starting the electromagnet module to ensure that the upper mold 1 has a good covering force.

[0053] In addition, in another installation method, two structural units capable of achieving electromagnetic attraction can be installed on the upper mold 1 and the lower mold 2 respectively. Through the interaction between the two magnetic attraction structural units, the magnetic attraction fixing effect between the upper mold 1 and the lower mold 2 can also be achieved, and the pressure holding strength is well guaranteed.

[0054] It should be noted that the electromagnet module mainly includes a coil and an iron core placed inside the coil. The coil generates magnetic force by passing current. Its structure is a prior art and will not be elaborated here. In addition, a control switch can be connected externally to the electromagnet module to open and close the electromagnet module through the control switch. Such a setting can further improve the convenience of operation.

[0055] Reference Figure 2 In actual use, due to the thin structure of the sheet, when placing the sheet into the lower contoured groove 221, the sheet may be offset due to external influences, resulting in failure to fully fit into the lower contoured groove 221, which has a certain impact on subsequent attachment actions.

[0056] Based on this, in order to overcome the above obstacles, an air flow channel 6 is provided through the lower mold 2, and the air flow channel 6 connects the bottom of the lower profiling groove 221 with the outside world; at this time, the fixture also includes a vacuum generating component (not marked in the figure), and the vacuum generating component adopts a device such as a vacuum generator that can generate a vacuum negative pressure effect, which is mainly used to extract air, and its structure is not described here; during installation, the vacuum generator is fixedly connected to the lower mold 2 through a pipeline and is connected to the air flow channel 6. At this time, under the action of the vacuum generating component, a vacuum negative pressure is generated at the bottom of the lower profiling groove 221, and the sheet is adsorbed. The sheet can be tightly attached to the bottom of the lower profiling groove 221, and the processing action is more reliable.

[0057] Reference Figure 5 and Figure 6 Because the lower mold 2 includes a base plate 21 and a detachable template member 22, when setting the airflow channel 6, it is necessary to make an adaptation adjustment to ensure that the air can flow smoothly in the airflow channel 6. Specifically, the airflow channel 6 includes a first section 61 and a second section 62 that are interconnected, wherein the first section 61 is provided in the template member 22, and the second section 62 is provided in the base plate 21.

[0058] First refer to Figure 5 The function of the first section 61 of the airflow channel 6 is to connect the multiple lower profiling grooves 221. Specifically, in the present embodiment, the first section 61 includes a first cavity 611 inside the template member 22, and further includes a first connection hole 612 and a second connection hole 613. The first connection hole 612 and the second connection hole 613 are respectively arranged through the template member 22, one end of the first connection hole 612 is connected to the top of the first cavity 611, and the other end is opened at the bottom of the lower profiling groove 221; one end of the second connection hole 613 is connected to the bottom of the first cavity 611, and the other end of the second connection hole 613 is opened at the bottom of the template member 22.

[0059] Through the above arrangement, the first connection hole 612 plays a role in directly adsorbing the sheet material, and the number of the first connection holes 612 can be multiple, and the multiple first connection holes 612 are evenly arranged at the bottom of the lower square groove for multi-point adsorption of the sheet material; at the same time, the second connection hole 613 is used to communicate with the second section 62 of the airflow channel 6 to play a conductive role.

[0060] Further, refer to Figure 6 The second section 62 of the air flow channel 6 includes a second cavity 621 located inside the seat plate 21, and also includes a third connecting hole 622, an air inlet hole (not marked in the figure) and an air outlet hole 623, wherein the two ends of the third connecting hole 622 respectively pass through the top of the seat plate 21 and the second cavity 621, and the third connecting hole 622 is connected to the second connecting hole 613 to achieve mutual conduction between the first section 61 and the second section 62; in addition, the air inlet hole and the air outlet hole 623 are arranged through the bottom of the seat plate 21 and are connected to the second cavity 621 at the same time. The air inlet hole and the air outlet hole 623 are also connected to the vacuum generating component for performing air intake and air exhaust actions.

[0061] At this time, under the action of the vacuum generating assembly, the air is first drawn into the first cavity 611 through the multiple first connecting holes 612 at the bottom of the lower contoured groove 221, and then the air in the first cavity 611 enters the second cavity 621 through the second connecting hole 613 and the third connecting hole 622, and finally flows out to the outside through the air outlet 623, forming an air negative pressure area. If you want to restore the air state, you can directly fill the air into the air inlet. The action is executed reasonably and efficiently.

[0062] Further, continue to refer to Figure 6 In actual application, since the lower mold plate 2 and the seat plate 21 are detachable, there will inevitably be a certain gap between the two, which may cause leakage in the air flow channel 6. In order to overcome the above obstacles, a sealing ring 7 is arranged between the seat plate 21 and the template member 22. There are roughly three ways to set the sealing ring 7. In the first setting method, the sealing ring 7 can be installed at the template member 22; in the second setting method, the sealing ring 7 can be installed at the seat plate 21. In the third setting method, multiple sealing rings 7 can be set and installed at the seat plate 21 and the template member 22 respectively. The second installation method is shown in this embodiment.

[0063] Specifically, in order to improve the installation stability of the sealing ring 7, an installation groove can be opened at the corresponding carrier, and the sealing ring 7 can be embedded and fixed in the installation groove to prevent the sealing ring 7 from falling off. At this time, through the above installation method, the sealing ring 7 is wound around the connecting position between the first section 61 and the second section 62 to achieve a sealing effect. When multiple groups of sealing rings 7 are provided, the number of installation grooves should be adjusted to multiple groups accordingly, and multiple groups of sealing rings 7 are coaxially arranged to form a multi-layer sealing effect, and the sealing performance of the airflow channel 6 can be further improved.

[0064] The implementation principle of the embodiment of the present application is: first, the sheet is placed in the lower contour groove 221. Under the cooperation of the vacuum generating component and the airflow channel 6, the sheet is adsorbed and then tightly attached to the bottom of the lower contour groove 221. Then, foam is placed on the sheet. After the foam is placed stably, the upper mold 1 is covered on the lower mold 2, and the electromagnet module is started. Under the action of the electromagnet module, the upper mold 1 is sucked and fixed to the lower mold 2. The pressure is maintained for a period of time, such as 20 seconds to one minute. Then, the electromagnet module is closed, and the template part 22 is taken out. Then, the stripping rod 5 is moved to peel the finished product off the template part 22 to complete the attachment process.

[0065] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A vacuum attachment fixture, characterized in that: It comprises a lower mold (2), a top of which is provided with a lower profiling groove (221) whose opening contour matches the contour of the foam and the sheet material, and an air flow channel (6) is provided through the lower mold, and the air flow channel (6) connects the bottom of the lower profiling groove (221) with the outside world; A vacuum generating component is connected to the air flow channel (6), and the vacuum generating component forms a vacuum negative pressure for adsorbing the sheet material at the bottom of the lower contour groove (221) via the air flow channel (6); and an upper mold (1), a movable cover arranged on the top of the lower mold (2), having an upper contour groove (11); when the upper mold (1) is covered on the lower mold (2), the lower contour groove (221) and the upper contour groove (11) form a pressure-maintaining cavity, and the upper mold (1) and the lower mold (2) tightly fit the foam and the sheet material in the pressure-maintaining cavity.

2. The vacuum attachment jig according to claim 1, characterized in that: The lower mold (2) comprises: A seat plate (21) having a positioning recess (211) disposed on the top; and a template member (22), wherein the lower contour groove (221) is arranged at the top of the template member (22), the template member (22) can be detachably placed in the positioning recess (211), and the positioning recess (211) is adapted to the contour of the template member (22) and is used to circumferentially limit the seat plate (21).

3. The vacuum attachment jig according to claim 2, characterized in that: A first inclined surface (222) is provided on the side of the template member (22), and a second inclined surface (212) wedged with the first inclined surface (222) is provided on the inner edge of the positioning recess (211).

4. The vacuum attachment jig according to claim 2, characterized in that: A handle (3) is fixedly provided on one side of the template member (22); an opening is provided on one side of the positioning recess (211) for allowing the handle (3) to pass through; a limiting block (4) is fixedly provided on the seat plate (21) near the side opening; the limiting block (4) abuts against the template member (22) for limiting position.

5. The vacuum attachment jig according to claim 2, characterized in that: The air flow channel (6) comprises a first section (61) and a second section (62) which are connected to each other, wherein the first section (61) is arranged on the template member (22), and the second section (62) is arranged on the seat plate (21).

6. The vacuum attachment jig according to claim 5, characterized in that: A sealing ring (7) is provided between the seat plate (21) and the template member (22), and the sealing ring (7) is arranged around a communication position between the first section (61) and the second section (62).

7. The vacuum attachment jig according to claim 1, characterized in that: The lower profiling grooves (221) and the upper profiling grooves (11) that cooperate with each other are multiple groups to form a plurality of pressure-maintaining cavities, and the plurality of pressure-maintaining cavities are evenly arranged at the lower mold (2) and the upper mold (1).

8. The vacuum attachment jig according to claim 1 or 7, characterized in that: It also includes a stripping rod (5), one end of which is rotatably arranged on the lower mold (2), and the stripping rod (5) passes through the lower contour groove (221); the lower mold (2) is provided with a receiving groove for accommodating the stripping rod (5), and when the stripping rod (5) is located in the receiving groove, the top of the stripping rod (5) is flush with the bottom of the lower contour groove (221), so that the sheet and foam can be placed above the stripping rod (5).

9. The vacuum attachment jig according to claim 1, characterized in that: One side of the upper mold (1) is rotatably disposed on the lower mold (2), so that the upper mold (1) is flipped over and covers the lower mold (2).

10. The vacuum attachment jig according to claim 1, characterized in that: An electromagnet module is provided at the upper mold (1) or the lower mold (2), and the electromagnet module is used to magnetically fix the upper mold (1) and the lower mold (2) to each other.

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