Prepreg unwinding mechanism, cutting machine and automatic multi-layer board stacking production line

Abstract

The utility model provides a prepreg unwinding mechanism, a cutting machine and an automatic multi-layer board stacking production line. The prepreg unwinding mechanism comprises a material roller, the material roller comprises a roller body and a plurality of external expansion embedded parts, the roller body is provided with a plurality of exhaust containing grooves, and the inner wall of each exhaust containing groove is provided with a plurality of adjusting mounting grooves formed in the radial direction of the roller body at intervals. The plurality of external expansion embedding pieces and the plurality of exhaust accommodating grooves are arranged in a one-to-one correspondence manner, each external expansion embedding piece comprises a mounting part and a protruding part which are connected with each other, the mounting part of each external expansion embedding piece is positioned in the corresponding exhaust accommodating groove, and a connecting block is convexly arranged on the mounting part of each external expansion embedding piece; the connecting block of each external expansion embedding piece is embedded in one adjusting installation groove in the corresponding exhaust containing groove, the protruding part of each external expansion embedding piece protrudes out of the outer side of the roller body, and the lengths of the protruding parts of the multiple external expansion embedding pieces protruding out of the roller body are equal. In this way, the prepreg unwinding mechanism is small in occupied space and low in cost.

Description

Technical Field

[0001] The present invention relates to the technical field of an automatic lamination production line for multilayer boards, and in particular to a prepreg unwinding mechanism, a cutting machine and an automatic lamination production line for multilayer boards. Background Art

[0002] Prepreg, also known as PP sheet, is one of the main materials in the automatic lamination technology of multi-layer boards. In the multi-layer structure of the circuit board, the prepreg acts as an insulating layer and an adhesive layer to firmly bond different circuit layers together. During the hot pressing process, the resin in the prepreg softens and flows, filling the tiny gaps between the layers, and then solidifies to form a solid interlayer bond, ensuring the integrity and stability of the circuit board. After curing, the resin in the prepreg forms an insulating layer, which effectively isolates the electrical connections between different circuit layers and prevents signal interference and short circuits. This is crucial to improving the reliability and performance of the circuit board.

[0003] In the production line of automatic lamination of multilayer boards, it is first necessary to unwind the prepreg through the prepreg unwinding mechanism, cut the prepreg through the prepreg cutting mechanism, and then apply the cut prepreg to the automatic lamination process. With respect to the prepreg unwinding mechanism, in the related art, for example, in a prepreg cutting machine disclosed in CN211466644U, the prepreg unwinding mechanism includes a drive motor, a transmission shaft and a material roller, the transmission shaft is connected to the power output end of the drive motor, the material roller is fixedly sleeved on the transmission shaft, the prepreg coil is sleeved on the material roller, the drive motor is used to drive the transmission shaft to rotate, and then drive the material roller to rotate, so that the material roller unwinds the prepreg.

[0004] However, since the size of the material roller is fixed, before replacing the semi-cured sheet roll with a different inner diameter, it is necessary to replace the material shaft that is compatible with the inner diameter of the semi-cured sheet roll to be replaced, so that the semi-cured sheet unwinding mechanism needs to be equipped with material rollers of various specifications, resulting in a large space occupied by the semi-cured sheet unwinding mechanism, and at the same time is not conducive to reducing the cost of the semi-cured sheet unwinding mechanism. Utility Model Content

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a prepreg unwinding mechanism, a cutting machine and a multi-layer board automatic lamination production line which occupy less space and have lower cost.

[0006] The purpose of this disclosure is achieved through the following technical solutions:

[0007] A prepreg unwinding mechanism comprises a mounting frame, a transmission shaft, a material roller and an unwinding motor, wherein both ends of the transmission shaft are rotatably connected to the mounting frame, the material roller is fixedly sleeved on the transmission shaft, the unwinding motor is mounted on the mounting frame, the power output end of the unwinding motor is connected to the transmission shaft, and the material roller comprises:

[0008] The roller body is provided with a plurality of exhaust receiving grooves arranged in an array along the circumference of the roller body, each of the exhaust receiving grooves extends to both end surfaces of the roller body, and the inner wall of each of the exhaust receiving grooves is provided with a plurality of adjustment installation grooves arranged at intervals along the radial direction of the roller body;

[0009] The outward expansion component includes a plurality of outward expansion inserts, and the plurality of the outward expansion inserts are arranged in a one-to-one correspondence with the plurality of the exhaust receiving grooves. Each of the outward expansion inserts includes a connected mounting portion and a protruding portion. The mounting portion of each of the outward expansion inserts is located in the corresponding exhaust receiving groove. The mounting portion of each of the outward expansion inserts is protrudingly provided with a connecting block. The connecting block of each of the outward expansion inserts is embedded in one of the adjusting mounting grooves in the corresponding exhaust receiving groove, so that each of the outward expansion inserts can be adjustably installed on the roller body. The protruding portion of each of the outward expansion inserts protrudes from the outside of the roller body. The protruding portions of the plurality of the outward expansion inserts protrude from the roller body by the same length. An outward expansion exhaust groove is formed between the protruding portions of two adjacent outward expansion inserts. The protruding portions of the plurality of the outward expansion inserts are commonly used for sleeve connection with the semi-cured sheet roll.

[0010] In some embodiments, the semi-cured sheet unwinding mechanism also includes two anti-slip end covers, which are respectively sleeved on both ends of the transmission shaft, and the two anti-slip end covers are also detachably connected to the two ends of the roller body, and the two anti-slip end covers jointly clamp each of the outwardly expanded embedded parts.

[0011] In some embodiments, the two anti-drop end covers are respectively threadedly connected to two ends of the roller body.

[0012] In some of the embodiments, a plurality of anti-slip air vents are provided on the outer side of the roller body.

[0013] In some of the embodiments, a plurality of the anti-slip air venting grooves are arranged in a circumferential array along the roller body.

[0014] In some embodiments, each of the anti-slip air vents extends to both end surfaces of the roller body.

[0015] In some of the embodiments, a plurality of outward-expanding anti-slip grooves are formed on the outer side of each outward-expanding embedded component away from the roller body.

[0016] In some of the embodiments, a plurality of the outwardly expanding anti-skid grooves are arranged at intervals along the circumference of the roller body.

[0017] A cutting machine, characterized in that it comprises the prepreg unwinding mechanism described in any of the above embodiments, and the cutting machine also comprises a cutting mechanism, which is arranged adjacent to the prepreg unwinding mechanism and is used to cut the prepreg.

[0018] An automatic lamination production line for multi-layer boards comprises the above-mentioned cutting machine, and the automatic lamination production line for multi-layer boards also comprises a turning machine, which is arranged adjacent to the cutting mechanism and is used to turn over the prepreg.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] The protruding parts of multiple outward-expanding embedded parts are used together to be socketed with the semi-cured sheet coil. When replacing semi-cured sheet coils with different inner diameters, the connecting blocks of each outward-expanding embedded part are adjusted in the position of the corresponding exhaust receiving groove, that is, the connecting blocks of each outward-expanding embedded part are adjusted in the corresponding adjustment installation groove to adjust the length of each outward-expanding embedded part protruding from the roller body, so as to make each outward-expanding embedded part adapt to the semi-cured sheet coil to be replaced, so that the material roller can adapt to semi-cured sheet coils with various inner diameters, improve the adaptability of the material roller, avoid the need to replace the material roller when replacing semi-cured sheet coils with different inner diameters, and make the semi-cured sheet unwinding mechanism do not need to be equipped with material rollers of various specifications, thereby reducing the occupied space of the semi-cured sheet unwinding mechanism and reducing the cost of the semi-cured sheet rolling mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of a multi-layer board automatic lamination production line according to an embodiment;

[0023] Figure 2 for Figure 1 The structure schematic diagram of the multi-layer board automatic stacking production line shown in another perspective;

[0024] Figure 3 for Figure 1 The schematic diagram of the structure of the prepreg unwinding mechanism of the multi-layer board automatic lamination production line shown;

[0025] Figure 4 for Figure 3 An exploded view of the prepreg unwinding mechanism shown;

[0026] Figure 5 for Figure 3 The structural schematic diagram of the prepreg unwinding mechanism shown in another perspective;

[0027] Figure 6 for Figure 1 The structure diagram of the automatic stacking production line of multi-layer boards shown in another perspective.

[0028] : 10, cutting machine; 100, prepreg unwinding mechanism; 100a, mounting frame; 100b, transmission shaft; 100c, material roller; 110, roller body; 111, exhaust receiving groove; 112, adjustment mounting groove; 120, outward expansion component; 120a, outward expansion insert; 121, mounting portion; 1211, connecting block; 122, protruding portion; 1201, outward expansion exhaust groove; 100d, anti-drop end cover; 100d, unwinding motor; 200, cutting mechanism; 20, flipping machine. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0033] like Figure 1As shown, an automatic lamination production line of a multilayer board in one embodiment includes a cutting machine 10 and a turning machine 20. The cutting machine 10 is used to cut out a prepreg of a predetermined size. The turning machine 20 is arranged adjacent to a cutting mechanism 200 of the cutting machine 10. The turning machine 20 is used to turn over the prepreg. Further, the cutting machine 10 includes a prepreg unwinding mechanism 100 and a cutting mechanism 200. The prepreg unwinding mechanism 100 is used to unwind the prepreg. The cutting mechanism 200 is arranged adjacent to the prepreg unwinding mechanism 100. The cutting mechanism 200 is used to cut the prepreg.

[0034] like Figure 1 and Figure 2 As shown, in some embodiments, the prepreg unwinding mechanism 100 includes a mounting frame 100a, a transmission shaft 100b, a material roller 100c and an unwinding motor 100d, both ends of the transmission shaft 100b are rotatably connected to the mounting frame 100a, the material roller 100c is fixedly sleeved on the transmission shaft 100b, the unwinding motor 100d is installed on the mounting frame 100a, and the power output end of the unwinding motor 100d is connected to the transmission shaft 100b.

[0035] like Figures 3 to 5 As shown, further, the material roller 100c includes a roller body 110 and an outward expansion component 120, the roller body 110 is provided with a plurality of exhaust receiving grooves 111 arranged in a circumferential array along the roller body 110, each exhaust receiving groove 111 extends to the two end surfaces of the roller body 110 respectively, each exhaust receiving groove 111 can be used for exhaust, and the inner wall of each exhaust receiving groove 111 is provided with a plurality of adjustment mounting grooves 112 arranged at radial intervals along the roller body 110. The outward expansion component 120 includes a plurality of outward expansion inserts 120a, and the plurality of outward expansion inserts 120a are arranged one-to-one corresponding to the plurality of exhaust receiving grooves 111. Each outward expansion insert 120a includes a mounting portion 121 and a protruding portion 122 connected to each other. The mounting portion 121 of each outward expansion insert 120a is located in the corresponding exhaust receiving groove 111. The mounting portion 121 of each outward expansion insert 120a is protrudingly provided with a connecting block 1211. The connecting block 1211 of each outward expansion insert 120a is embedded in one of the adjusting mounting grooves 112 in the corresponding exhaust receiving groove 111, so that each outward expansion insert 120a can be adjustably installed on the roller body 110, and the adjustment direction of each outward expansion insert 120a is the radial direction of the roller body 110. The protruding portion 122 of each outwardly expanding insert 120a protrudes from the outside of the roller body 110. The length of each outwardly expanding insert 120a protruding from the roller body 110 can be adjusted by adjusting each outwardly expanding insert 120a. The protruding portions 122 of multiple outwardly expanding inserts 120a protruding from the roller body 110 have the same length. An outwardly expanding exhaust groove 1201 is formed between the protruding portions 122 of two adjacent outwardly expanding inserts 120a, and the outwardly expanding exhaust groove 1201 can be used for exhaust.

[0036] like Figure 4 and Figure 5 As shown, in this embodiment, the protruding portions 122 of multiple outward expansion inserts 120a are used together to be sleeved with the semi-cured sheet roll. When replacing the semi-cured sheet roll with a different inner diameter, the connecting block 1211 of each outward expansion insert 120a is slid out of the corresponding exhaust receiving groove 111 to separate each outward expansion insert 120a from the roller body 110, and then the connecting block 1211 of each outward expansion insert 120a is aligned with the corresponding adjustment installation groove 112, and then the connecting block 1211 of each outward expansion insert 120a is completely slid into the corresponding adjustment installation groove 112 to connect the connecting block 1211 of each outward expansion insert 120a in the corresponding adjustment installation groove 112, so that the length of each outward expansion insert 120a protruding from the roller body 110 is adapted to the semi-cured sheet roll to be replaced, so that the semi-cured sheet roll to be replaced can be sleeved on the multiple outward expansion inserts 120a.

[0037] In the above-mentioned multi-layer board automatic lamination production line, cutting machine 10 and prepreg unwinding mechanism 100, the protruding parts 122 of the plurality of outward expansion inserts 120a are used to be connected with the prepreg coil. When the prepreg coil with different inner diameter is replaced, the connection block 1211 of each outward expansion insert 120a is adjusted in the position of the corresponding exhaust receiving groove 111, that is, the connection block 1211 of each outward expansion insert 120a is adjusted in the corresponding adjustment installation groove 112, so as to adjust the protrusion of each outward expansion insert 120a to The length of the roller body 110 makes each outwardly expanded embedded part 120a adapt to the semi-cured sheet coil to be replaced, so that the material roller 100c can adapt to the semi-cured sheet coils with various inner diameters, thereby improving the adaptability of the material roller 100c and avoiding the need to replace the material roller 100c when replacing the semi-cured sheet coils with different inner diameters, so that the semi-cured sheet unwinding mechanism 100 does not need to be equipped with material rollers 100c of various specifications, thereby reducing the occupied space of the semi-cured sheet unwinding mechanism 100 and reducing the cost of the semi-cured sheet rolling mechanism.

[0038] like Figure 3 and Figure 4 As shown, in some embodiments, the semi-cured sheet unwinding mechanism 100 also includes two anti-slip end covers 100d, which are respectively sleeved on both ends of the transmission shaft 100b, and the two anti-slip end covers 100d are also detachably connected to the two ends of the roller body 110, and the two anti-slip end covers 100d jointly clamp each outward expansion insert 120a, thereby avoiding the problem of each outward expansion insert 120a falling off.

[0039] like Figure 4 As shown, in some of the embodiments, the two anti-detachment end covers 100d are respectively threadedly connected to the two ends of the roller body 110, so that the anti-detachment end covers 100d are detachably connected.

[0040] like Figure 4As shown, in some embodiments, a plurality of anti-skid exhaust grooves are provided on the outer side of the roller body 110, and the anti-skid exhaust grooves are used to increase the friction coefficient of the surface of the roller body 110, providing convenience for assembling the roller body 110, and the anti-skid exhaust grooves can also be used for exhaust. Further, the plurality of anti-skid exhaust grooves are arranged in an array along the circumference of the roller body 110.

[0041] like Figure 4 As shown, in some of the embodiments, each anti-skid exhaust groove extends to both end surfaces of the roller body 110, which is conducive to exhausting the anti-skid exhaust groove to the outside.

[0042] like Figure 4 As shown, in some embodiments, a plurality of outward-expanding anti-skid grooves are provided on the outer side of each outward-expanding insert 120a away from the roller body 110, thereby increasing the friction between each outward-expanding insert 120a and the coil, suppressing the problem of the coil slipping, and the outward-expanding anti-skid grooves can also be used for exhaust. Furthermore, a plurality of outward-expanding anti-skid grooves are arranged at intervals along the circumference of the roller body 110.

[0043] Compared with the prior art, the present invention has at least the following advantages:

[0044] The protruding portions 122 of the multiple outwardly expanding embedded parts 120a are used to be connected with the semi-cured sheet coil. When replacing the semi-cured sheet coil with different inner diameters, the connecting block 1211 of each outwardly expanding embedded part 120a is adjusted in the position of the corresponding exhaust receiving groove 111, that is, the connecting block 1211 of each outwardly expanding embedded part 120a is adjusted in the corresponding adjustment installation groove 112 to adjust the length of each outwardly expanding embedded part 120a protruding from the roller body 110, so as to make each outwardly expanding embedded part 120a adapt to the semi-cured sheet coil to be replaced, so that the material roller 100c can adapt to the semi-cured sheet coil with various inner diameters, improve the adaptability of the material roller 100c, avoid the need to replace the material roller 100c when replacing the semi-cured sheet coil with different inner diameters, and make the semi-cured sheet unwinding mechanism 100 do not need to be configured with material rollers 100c of various specifications, thereby reducing the occupied space of the semi-cured sheet unwinding mechanism 100 and reducing the cost of the semi-cured sheet rolling mechanism.

[0045] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the disclosed patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the disclosed patent shall be subject to the attached claims.

Claims

1. A prepreg unwinding mechanism, comprising a mounting frame, a transmission shaft, a material roller and an unwinding motor, wherein both ends of the transmission shaft are rotatably connected to the mounting frame, the material roller is fixedly sleeved on the transmission shaft, the unwinding motor is mounted on the mounting frame, and the power output end of the unwinding motor is connected to the transmission shaft, characterized in that: The material roller comprises: The roller body is provided with a plurality of exhaust receiving grooves arranged in an array along the circumference of the roller body, each of the exhaust receiving grooves extends to both end surfaces of the roller body, and the inner wall of each of the exhaust receiving grooves is provided with a plurality of adjustment installation grooves arranged at intervals along the radial direction of the roller body; The outward expansion component includes a plurality of outward expansion inserts, and the plurality of the outward expansion inserts are arranged in a one-to-one correspondence with the plurality of the exhaust receiving grooves. Each of the outward expansion inserts includes a connected mounting portion and a protruding portion. The mounting portion of each of the outward expansion inserts is located in the corresponding exhaust receiving groove. The mounting portion of each of the outward expansion inserts is protrudingly provided with a connecting block. The connecting block of each of the outward expansion inserts is embedded in one of the adjusting mounting grooves in the corresponding exhaust receiving groove, so that each of the outward expansion inserts can be adjustably installed on the roller body. The protruding portion of each of the outward expansion inserts protrudes from the outside of the roller body. The protruding portions of the plurality of the outward expansion inserts protrude from the roller body by the same length. An outward expansion exhaust groove is formed between the protruding portions of two adjacent outward expansion inserts. The protruding portions of the plurality of the outward expansion inserts are commonly used for sleeve connection with the semi-cured sheet roll.

2. The prepreg unwinding mechanism according to claim 1, characterized in that: The prepreg unwinding mechanism also includes two anti-slip end covers, which are respectively sleeved on the two ends of the transmission shaft, and are also detachably connected to the two ends of the roller body, and the two anti-slip end covers jointly clamp each of the outwardly expanded embedded parts.

3. The prepreg unwinding mechanism according to claim 2, characterized in that: The two anti-drop end covers are respectively connected to the two ends of the roller body by threads.

4. The prepreg unwinding mechanism according to claim 1, characterized in that: The outer side of the roller body is also provided with a plurality of anti-skid exhaust grooves.

5. The prepreg unwinding mechanism according to claim 4, characterized in that: A plurality of the anti-skid air venting grooves are arranged in an array along the circumference of the roller body.

6. The prepreg unwinding mechanism according to claim 4, characterized in that: Each of the anti-slip air vents extends to both end surfaces of the roller body.

7. The prepreg unwinding mechanism according to claim 1, characterized in that: A plurality of outward-expanding anti-skid grooves are formed on the outer side of each outward-expanding embedded part away from the roller body.

8. The prepreg unwinding mechanism according to claim 7, characterized in that: A plurality of outwardly expanding anti-skid grooves are arranged at intervals along the circumference of the roller body.

9. A cutting machine, characterized in that: The cutting machine comprises the prepreg unwinding mechanism according to any one of claims 1 to 8, and the cutting machine further comprises a cutting mechanism, the cutting mechanism is arranged adjacent to the prepreg unwinding mechanism, and the cutting mechanism is used to cut the prepreg.

10. A multi-layer board automatic lamination production line, characterized in that: Including the cutting machine described in claim 9, the automatic multi-layer board stacking production line also includes a flipping machine, which is arranged adjacent to the cutting mechanism and is used to flip the semi-cured sheet.

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