Lower template for preventing auxiliary material from deviating, vacuum hot-pressing template group and vacuum pressing machine

Abstract

The utility model provides a lower template, vacuum hot-pressing template group and vacuum laminating machine for preventing auxiliary materials from deviating, the lower template comprises a lower hot plate and a burning iron plate, the upper surface of the lower hot plate comprises a middle concave part and a plurality of edge convex parts, and the plurality of edge convex parts are positioned on the outer side of the middle concave part; the burning iron plate is located in the middle concave part, at least one edge convex part is provided with an edge pressing structure, the edge pressing structure comprises a pressing block used for pressing the edge of a release auxiliary material on the top face of the to-be-pressed product, and the pressing block is located on the outer side of the burning iron plate; and the pressing block is elastically and rotationally arranged on the edge convex part. The edge pressing structure is pressed on the edge of the auxiliary material on the top surface of the to-be-pressed product, so that the release auxiliary material on the top surface of the to-be-pressed product is prevented from deviating at the moment of extrusion during die assembly, and meanwhile, the release auxiliary material on the top surface is prevented from being taken out and pulled up along with the upper die plate to deviate when the die plate is opened after the pressing operation is completed; and the product yield is further improved. And the grabbing manipulator can accurately and perfectly take out the FPC and the release auxiliary material when automatically grabbing the FPC and the release auxiliary material.

Description

Technical Field

[0001] This utility model relates to the field of flexible circuit board lamination technology, and in particular to a vacuum hot pressing template assembly and vacuum lamination equipment for preventing auxiliary material displacement. Background Technology

[0002] After the insulating film or reinforcing material is adhered to the surface of the flexible printed circuit board (FPC) substrate, it needs to be heated and pressurized by a high-speed vacuum press to ensure that the insulating film or reinforcing material can be fully and tightly bonded to the substrate, avoiding the formation of bubbles or other defects that would cause scrap.

[0003] During the pressing process, a layer of release material (such as release film, TPX, or fiberglass cloth) is added to both the top and back of the FPC to be pressed for release, preventing product adhesion and poor pressing and transfer. Currently, most high-speed vacuum presses on the market use this method. However, during the pressing process, due to static electricity on the surface of the release material, residual air inside the mold cavity, and other factors, the release material on the top surface of the product can shift during the moment of compression when the mold closes. When the shift exceeds the effective size range of the pressed product, it can cause indentations, transfer defects, and other defects in the FPC, rendering it unusable. Currently, there are no effective methods on the market to control and solve this problem.

[0004] Furthermore, during automated online operations, the robotic arm may fail to accurately and properly remove the FPC and release liner when it automatically grabs the FPC and release liner on the surface of the pressed product due to the release liner shifting, causing machine stoppage, line stoppage, or overlapping and pressing of the pressed product, resulting in scrap. Utility Model Content

[0005] To solve the above-mentioned technical problems, one embodiment of this utility model provides a lower template for preventing auxiliary material displacement. The lower template includes a lower heating plate and a firing plate. The upper surface of the lower heating plate includes a central concave portion and several edge protrusions, with several of the edge protrusions located outside the central concave portion. The firing plate is located in the central concave portion, and at least one of the edge protrusions is provided with a pressing structure. The pressing structure includes a pressing block for pressing against the edge of the release material on the top surface of the product to be pressed. The pressing block is located outside the firing plate. The pressing block is elastically rotatably disposed on the edge protrusion.

[0006] Optionally, the middle part of the pressure block is rotatably mounted on the edge protrusion via a mounting shaft, and a torsion spring is sleeved on the mounting shaft. The torsion spring includes at least two torsion arms, which abut against the two ends of the pressure block respectively.

[0007] Optionally, the upper surface of the edge protrusion is provided with a mounting groove, and the lower surface of the pressure block is provided with a mounting part in the middle. The mounting part is rotatably disposed in the mounting groove via the mounting shaft. The torsion spring is located in the mounting groove, and the two torsion arms of the torsion spring abut against the lower surfaces of the two ends of the pressure block, respectively.

[0008] Optionally, the mounting groove has a first mounting hole on each of the two corresponding groove walls, the mounting part includes two spaced lugs, and the torsion spring is located between the two lugs; the lugs have a second mounting hole, and the mounting shaft passes through the first mounting hole, the torsion spring and the second mounting hole.

[0009] Optionally, the mounting shaft is mounted in the first mounting hole via a bushing.

[0010] Optionally, the pressure block is located at the end of the edge protrusion, and the two ends of the pressure block are arranged along the length direction of the edge protrusion. The two ends of the pressure block are a first end and a second end, respectively. The first end is used to be pressed down to lift the second end. The first end is closer to the end edge of the edge protrusion than the second end. The second end is used to press down on the edge of the auxiliary material.

[0011] Optionally, the second end is longer than the first end.

[0012] Optionally, at least two corresponding outer edge protrusions of the central concave portion are respectively provided with a pressing edge structure at both ends.

[0013] Optionally, at least one of the edge protrusions may be elastically fitted with a plurality of top posts, wherein in the natural state, the upper end face of the top posts protrudes from the edge protrusion.

[0014] Optionally, at least one of the edge protrusions has a plurality of mounting blind holes on its upper surface, and the lower end of the top post is elastically disposed in the mounting blind holes by a spring.

[0015] Optionally, a plurality of top posts are elastically embedded on at least two corresponding outer edge protrusions of the central recess.

[0016] Optionally, the product to be pressed includes a substrate of a printed flexible circuit board, the surface of which is covered with an insulating film or reinforcing material; during the pressing operation, the release material is added to the top and back of the product to be pressed, the edge of the release material is located outside the edge of the product to be pressed, the product to be pressed is located on the sintered iron plate, and the edge of the release material is located on the edge protrusion.

[0017] The second embodiment of this utility model also provides a vacuum hot-press template assembly for preventing auxiliary material displacement, including an upper template and a lower template as described in the above embodiment.

[0018] The third embodiment of this utility model also provides a vacuum pressing machine, including the vacuum hot pressing template group described in the above embodiments.

[0019] Compared with the prior art, the technical solution of this utility model embodiment has the following beneficial effects:

[0020] In this invention, the product to be pressed includes a substrate of a printed flexible circuit board (FPC), with an insulating film or reinforcing material adhered to the surface of the substrate. During the pressing process, release materials (such as release film, TPX, or fiberglass cloth) are added to both the top and back surfaces of the product to be pressed for release. The size of the release material is larger than the size of the product to be pressed, meaning the edge of the release material is located outside the edge of the product to be pressed. The product to be pressed is placed on a firing plate, and the edge of the release material is located on the edge protrusion. Therefore, this invention uses a pressing structure to press the edge of the release material on the top surface of the product to be pressed, preventing the release material on the top surface of the product from shifting during the moment of compression when the mold is closed. It also prevents the release material on the top surface from being pulled out and shifted along with the upper mold when the mold is opened after the pressing process is completed, thereby improving the product yield.

[0021] Moreover, the edge of the release liner on the top surface of the product to be pressed is held down by the pressure block. Therefore, when the template is opened after the pressing operation is completed, the release liner on the top surface will not be pulled out and shifted along with the upper template. When the gripping robot automatically grips the FPC and the release liner, it can be accurately and intactly removed.

[0022] Furthermore, after the product to be pressed is pressed, the lower template is opened. In order to facilitate the gripping robot to pick up the pressed product and release material, several top posts are elastically embedded on the edge protrusion. In the natural state, the upper end face of the top post protrudes from the edge protrusion, that is, the top post lifts the product upward by elastic force, so that the product is separated from the surface of the lower template, making it easier for the gripping robot to pick up.

[0023] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a vacuum hot-press template assembly provided in an embodiment of the present invention;

[0026] Figure 2 An exploded view of the lower template provided in an embodiment of this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point I in the middle. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. The terms "above" and "over," and any variations thereof, are intended to describe positional relationships and do not imply direct contact between the described objects.

[0030] Please refer to Figures 1 to 3 This utility model provides a lower template 2 for preventing auxiliary material displacement. The lower template 2 includes a lower heating plate 21 and a firing plate 22. The upper surface of the lower heating plate 21 includes a central concave portion 212 and several edge protrusions 211, with several edge protrusions 211 located outside the central concave portion 212. The firing plate 22 is located in the central concave portion 212. At least one edge protrusion 211 is provided with a pressing structure 23. The pressing structure 23 includes a pressing block 231 for pressing the edge of the release auxiliary material on the top surface of the product to be pressed. The pressing block 231 is located outside the firing plate 22. The pressing block 231 is elastically rotatably disposed on the edge protrusion 211.

[0031] In this invention, the product to be pressed includes a substrate of a printed flexible circuit board (FPC), and an insulating film or reinforcing material is adhered to the surface of the substrate. During the pressing process, release materials (such as release film, TPX, or fiberglass cloth) are added to the top and back of the product to be pressed for release. The size of the release material is larger than the size of the product to be pressed, that is, the edge of the release material is located outside the edge of the product to be pressed. The product to be pressed is located on the firing plate 22, and the edge of the release material is located on the edge protrusion 211. Therefore, this invention uses the pressing edge structure 23 to press the edge of the release material on the top surface of the product to be pressed, preventing the release material on the top surface of the product from shifting due to the momentary extrusion during mold closing. It also prevents the release material on the top surface from being pulled out and shifted along with the upper mold when the mold is opened after the pressing process is completed, thereby improving the product yield.

[0032] Moreover, the edge of the release material on the top surface of the product to be pressed is pressed down by the pressure block 231. Therefore, when the template is opened after the pressing operation is completed, the release material on the top surface will not be pulled out and shifted along with the upper template. As a result, when the gripping robot automatically grips the FPC and the release material, it can be accurately and intactly removed.

[0033] In this invention, the upper surface of the lower heating plate 21 includes a central recess 212 and several edge protrusions 211, with the edge protrusions 211 located outside the central recess 212. This invention does not limit the number of edge protrusions 211; it can be set according to the shape of the central recess 212. As one embodiment, the central recess 212 is square, thus having four edges. Therefore, the lower heating plate 21 includes four edge protrusions 211 corresponding to the four edges of the central recess 212. The four edge protrusions 211 protrude from the central recess 212 and surround it.

[0034] The pressure block 231 is elastically rotatably mounted on the edge protrusion 211, meaning it can rotate under external force, lifting one end of the pressure block 231. After the external force is removed, the pressure block 231 returns to its original position due to gravity and elasticity. Before mold closing, a gripping robot places the product to be pressed and the release liner on the lower mold plate 2, positioning the product on the firing plate 22 and the edge of the release liner on the edge protrusion 211. Then, through the operation of the relevant mechanisms on the gripping robot, one end of the pressure block 231 is lifted, with the edge of the release liner below the pressure block 231. The pressure block 231 is then released, pressing down on the release liner under the influence of gravity and elasticity. After the pressing operation is completed, the lower mold plate 2 is opened, and by lifting the end of the pressure block 231 that is pressing on the release liner, the gripping robot can remove the pressed product.

[0035] This invention does not limit the structure in which the pressure block 231 is elastically rotated on the edge protrusion 211.

[0036] In the first embodiment, one end of the pressure block 231 is elastically rotatably disposed on the edge protrusion 211. If the first end of the pressure block 231 is elastically rotatably disposed on the edge protrusion, then the second end of the pressure block 231 is lifted by external force so that the edge of the release material is located below the second end of the pressure block 231. Then the second end of the pressure block 231 is released, and the second end of the pressure block 231 is pressed onto the release material under the action of gravity and elastic force.

[0037] In the second embodiment, the pressure block 231 is elastically rotatably mounted on the edge protrusion 211. External force allows both ends of the pressure block 231 to rotate up and down like a seesaw. After the external force is removed, the pressure block 231 returns to its original position due to gravity and elasticity. For example, by pressing down on the first end of the pressure block 231, the second end of the pressure block 231 is lifted, so that the edge of the release liner is below the second end of the pressure block 231. Then, by releasing the first end of the pressure block 231, the second end of the pressure block 231 presses against the release liner under the action of elasticity.

[0038] The following describes the second embodiment in detail.

[0039] The middle part of the pressure block 231 is rotatably mounted on the edge protrusion 211 via the mounting shaft 232. A torsion spring is sleeved on the mounting shaft 232. The torsion spring 233 includes at least two torsion arms 2331. These two torsion arms 2331 abut against the two ends of the pressure block 231 respectively, that is, the two ends of the pressure block 231 are elastically supported by the torsion spring 233.

[0040] Specifically, the upper surface of the edge protrusion 211 is provided with a mounting groove 2111, the torsion spring 233 is located in the mounting groove 2111, and the two corresponding groove walls of the mounting groove 2111 are respectively provided with first mounting holes 21111.

[0041] The lower surface of the pressure block 231 is provided with a mounting part in the middle. The mounting part includes two spaced lugs 2311. The lugs 2311 are provided with a second mounting hole 23111. The torsion spring 233 is located between the two lugs 2311, and the two torsion arms 2331 of the torsion spring 233 abut against the lower surfaces of the two ends of the pressure block 231 respectively.

[0042] The mounting shaft 232 passes through the first mounting hole 21111, the torsion spring 233, and the second mounting hole 23111.

[0043] Furthermore, the mounting shaft 232 is mounted in the first mounting hole 21111 via a bushing 234.

[0044] Before mold closing, a gripping robot places the product to be pressed and the release liner onto the lower mold plate 2, ensuring the product is positioned on the firing plate 22 and the edge of the release liner is on the edge protrusion 211. Then, the ejector pin on the gripping robot presses down on the first end of the pressing block 231, lifting the second end of the pressing block 231. The edge of the release liner is positioned below the second end of the pressing block 231. The ejector pin on the gripping robot then releases the first end of the pressing block 231, and the second end of the pressing block 231 presses down on the release liner under the combined force of gravity and elasticity. After the pressing operation is completed, the lower mold plate 2 is opened, and the ejector pin on the gripping robot presses down on the first end of the pressing block 231, lifting the second end of the pressing block 231. The gripping robot then removes the pressed product.

[0045] In this embodiment, the specific position of the pressure block 231 on the edge protrusion 211 is not limited. It can be set according to the actual size of the release material, as long as it can press down the edge of the release material.

[0046] In one embodiment, the pressure block 231 is located at the end of the edge protrusion 211, and both ends of the pressure block 231 are arranged along the length direction of the edge protrusion 211. In this embodiment, the pressure block 231 is divided into two parts along the length direction, namely two ends, namely a first end and a second end. The first end is used to be pressed down to lift the second end. The first end is closer to the edge edge of the edge protrusion 211 than the second end, so that the first end avoids the edge of the auxiliary material, making it easier for the pin on the gripping robot to press down the first end.

[0047] The mounting shaft 232 can be located in the middle of the pressure block 231, or it can be closer to the first end or the second end. Since the second end is used to press down on the edge of the auxiliary material, in order to make the second end press down on the edge of the auxiliary material more stably, the mounting shaft 232 is designed to be closer to the first end, that is, the second end is longer than the first end, so that the pressure block 231 can press down on the auxiliary material for a longer length.

[0048] The pressing structure 23 can be provided on all the edge protrusions 211, or it can be provided on some of the edge protrusions 211. This utility model does not make specific limitations in this regard.

[0049] To facilitate symmetrical pressing of the auxiliary material edges on both corresponding sides of the central recess 212, as an embodiment, a pressing structure 23 is respectively provided at both ends of the edge protrusions 211 on at least two corresponding outer sides of the central recess 212. If the hinge end where the lower template 2 is hinged to the upper template 1 is the rear, and the opening side of the lower template 2 is the front, then a pressing structure 23 can be provided at both ends of the two edge protrusions 211 on the left and right sides of the lower template 2. These two edge protrusions 211 are located on the left and right sides of the central recess 212, that is, the left and right sides are the two corresponding outer sides of the central recess 212; or / and a pressing structure 23 can be provided at both ends of the two edge protrusions 211 on the front and rear sides of the lower template 2. These two edge protrusions 211 are located on the front and rear sides of the central recess 212, that is, the front and rear sides are the two corresponding outer sides of the central recess 212.

[0050] In order not to affect the pressing operation after mold closing, the upper surface of the pressing block 231 can be flush with the edge protrusion 211 in its natural state.

[0051] After the product to be pressed is pressed, the lower template 2 is opened. In order to facilitate the gripping robot to pick up the pressed product and release material, in this embodiment, at least one of the edge protrusions 211 is elastically embedded with several top posts 24. In the natural state, the upper end face of the top post 24 protrudes from the edge protrusion 211, that is, the top post 24 pushes the product upward by elastic force, so that the product is separated from the surface of the lower template 2, making it easy for the gripping robot to pick it up.

[0052] Specifically, at least one of the edge protrusions 211 has a plurality of mounting blind holes 2112 on its upper surface, and the lower end of the top post 24 is elastically disposed in the mounting blind holes 2112 by a spring.

[0053] In order not to affect the pressing operation after mold closing, the upper end of the ejector pin 24 can be retracted into the blind hole 2112 or flush with the edge protrusion 211 under the pressure of external force.

[0054] This embodiment does not limit the elastic connection method between the top post 24 and the mounting blind hole 2112. As one embodiment, the lower end of the top post 24 is elastically set in the mounting blind hole 2112 by a spring, that is, one end of the spring is fixedly connected to the lower end of the top post 24, and the other end of the spring is fixedly connected to the bottom of the groove of the mounting blind hole 2112.

[0055] In the second embodiment, a raised ring is provided around the middle outer periphery of the top post 24, the lower end of the top post 24 is sleeved on the spring, the upper end of the spring is fixedly connected to the lower surface of the raised ring, and the lower end of the spring is fixed to the bottom of the groove of the blind hole 2112.

[0056] The top post 24 can be provided on all the edge protrusions 211, or it can be provided on some of the edge protrusions 211. This utility model does not make specific restrictions in this regard.

[0057] In order to facilitate the symmetrical ejection of the auxiliary material edges on the two corresponding sides of the central recess 212, as an embodiment, a plurality of top posts 24 are elastically embedded on the edge protrusions 211 on at least two corresponding outer sides of the central recess 212.

[0058] With the hinged end of the lower template 2 and the upper template 1 being the rear, and the opening of the lower template 2 being the front, several top posts 24 can be set on the two edge protrusions 211 on the left and right sides of the lower template 2. These two edge protrusions 211 are located on the left and right sides of the middle recess 212, that is, the left and right sides are the two corresponding outer sides of the middle recess 212; or / and several top posts 24 can be set on the two edge protrusions 211 on the front and rear sides of the lower template 2. These two edge protrusions 211 are located on the front and rear sides of the middle recess 212, that is, the front and rear sides are the two corresponding outer sides of the middle recess 212.

[0059] The second embodiment of this utility model also provides a vacuum hot press template assembly for preventing auxiliary material displacement, including an upper template 1 and a lower template 2 as described in the above embodiment.

[0060] The lower template 2 also includes a fixture pad 25, which is located in the middle recess 212 and below the firing plate 22. The firing plate 22 is also sealed in the middle recess 212 by a sealing ring.

[0061] The third embodiment of this utility model also provides a vacuum pressing machine, including the vacuum hot pressing template group described in the above embodiments.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lower template for preventing auxiliary material displacement, the lower template comprising a lower heating plate and a firing plate, characterized in that, The upper surface of the lower heating plate includes a central concave portion and several edge protrusions, with several of the edge protrusions located outside the central concave portion; the sintering iron plate is located in the central concave portion, and at least one of the edge protrusions is provided with a pressing structure, the pressing structure including a pressing block for pressing against the edge of the release liner on the top surface of the product to be pressed, the pressing block being located outside the sintering iron plate; the pressing block is elastically rotatably disposed on the edge protrusion.

2. The lower template according to claim 1, characterized in that, The middle part of the pressure block is rotatably mounted on the edge protrusion via a mounting shaft. A torsion spring is sleeved on the mounting shaft. The torsion spring includes at least two torsion arms, which abut against the two ends of the pressure block respectively.

3. The lower template according to claim 2, characterized in that, The upper surface of the edge protrusion is provided with a mounting groove, and the lower surface of the pressure block is provided with a mounting part in the middle. The mounting part is rotatably disposed in the mounting groove via the mounting shaft. The torsion spring is located in the mounting groove, and the two torsion arms of the torsion spring abut against the lower surfaces of the two ends of the pressure block respectively.

4. The lower template according to claim 3, characterized in that, The mounting groove has a first mounting hole on each of its two corresponding groove walls. The mounting part includes two spaced lugs, and the torsion spring is located between the two lugs. The lugs have a second mounting hole, and the mounting shaft passes through the first mounting hole, the torsion spring, and the second mounting hole.

5. The lower template according to claim 4, characterized in that, The mounting shaft is installed in the first mounting hole via a bushing.

6. The lower template according to claim 1, characterized in that, The pressure block is located at the end of the edge protrusion, and the two ends of the pressure block are arranged along the length direction of the edge protrusion. The two ends of the pressure block are a first end and a second end, respectively. The first end is used to be pressed down to lift the second end. The first end is closer to the end edge of the edge protrusion than the second end. The second end is used to press down on the edge of the auxiliary material.

7. The lower template according to claim 6, characterized in that, The second end is longer than the first end.

8. The lower template according to any one of claims 1 to 7, characterized in that, At least two corresponding outer edge protrusions of the central concave portion are respectively provided with a pressing edge structure at both ends.

9. The lower template according to claim 1, characterized in that, At least one of the edge protrusions is elastically fitted with a plurality of top posts, and in the natural state, the upper end face of the top posts protrudes from the edge protrusion.

10. The lower template according to claim 9, characterized in that, At least one of the edge protrusions has a plurality of mounting blind holes on its upper surface, and the lower end of the top post is elastically disposed in the mounting blind holes by a spring.

11. The lower template according to claim 9, characterized in that, A plurality of top posts are elastically embedded on at least two corresponding outer edge protrusions of the central concave portion.

12. The lower template according to claim 1, characterized in that, The product to be pressed includes a substrate of a printed flexible circuit board, the surface of which is covered with an insulating film or reinforcing material; during the pressing operation, the release material is added to the top and back of the product to be pressed, the edge of the release material is located outside the edge of the product to be pressed, the product to be pressed is located on the sintered iron plate, and the edge of the release material is located on the edge protrusion.

13. A vacuum hot-press template assembly for preventing auxiliary material displacement, characterized in that, It includes an upper template and a lower template as described in any one of claims 1 to 12.

14. A vacuum pressing machine, characterized in that, Includes the vacuum hot-press template assembly as described in claim 13.

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