Aluminum foil organ sheet indentation folding mechanism

Abstract

The utility model discloses an aluminum foil organ sheet indentation folding mechanism which comprises an upper pressing roller and a lower pressing roller which are installed at the upper position and the lower position of a roller frame, the upper pressing roller and the lower pressing roller are the same in structure, and isosceles triangle indentation protrusions and indentation matching recesses which are designed in the axial direction of a roller body are alternately designed in the circumferential direction of the roller body at equal angles at intervals. An aluminum foil path is arranged between the upper and lower compression rollers; the indentation protrusions and the indentation matching recesses on the upper compression roller are sequentially matched and embedded with the indentation matching recesses and the indentation protrusions on the lower compression roller in the rotating process of the upper compression roller and the lower compression roller, and the embedded positions serve as indentation positions; under the action of a designed vacuum system, the embossed aluminum foil enables the upper and lower compression rollers to alternately adsorb the aluminum foil close to the embossing position, the aluminum foil is brought between the two hook claws, and it is guaranteed that the aluminum foil can accurately enter the storage cabin through the two hook claws. Furthermore, the aluminum foil is matched with a sliding block arranged in the storage bin to achieve primary folding of the aluminum foil. Through the mechanism, the production efficiency of the aluminum foil organ sheet can be obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to spaceflight heat control technical field especially relates to a kind of aluminium foil organ piece indentation folding mechanism. BACKGROUND

[0002] When spacecraft runs at high speed under space environment, a large amount of electric charge will be generated on the surface of the reflecting screen of multilayer thermal insulation assembly. When the static charge accumulates to a certain extent, it will produce instantaneous high-voltage discharge, which will break through the multilayer thermal insulation assembly or components. Therefore, the aluminium foil organ piece is needed to connect each layer of reflecting screen with ground wire, so that each layer of reflecting screen of the thermal insulation assembly can be conducted through the ground wire.

[0003] Therefore, the quality of the aluminium foil organ piece directly determines the grounding performance of the multilayer thermal insulation assembly. At present, the aluminium foil organ piece is made by manually cutting the aluminium foil into 2cm wide strips with a right-angle ruler and then folding it manually. It takes about 10 minutes per person to produce one finished product. Since it is manually folded, the end faces of the organ piece are uneven, the yield is about 60%, and the static labor intensity is high, with a maximum of 50 pieces per day per person, which is low in efficiency. In addition, since the aluminium foil is very thin and the end face is sharp, there is a risk of injury to the operator when manually folding the aluminium foil organ piece. SUMMARY

[0004] To solve the above problems, the utility model provides an aluminium foil organ piece indentation folding mechanism, which effectively improves the production efficiency of the aluminium foil organ piece and the size accuracy of the formed organ piece.

[0005] The utility model discloses an aluminium foil organ piece indentation folding mechanism, which comprises upper and lower pressure rollers installed on the upper and lower positions of a roller frame. The upper and lower pressure rollers have the same structure, and the roller bodies are designed with equiangularly spaced isosceles triangle indentation protrusions and indentation matching recesses alternately along the axial direction of the roller bodies. The aluminium foil passes between the upper and lower pressure rollers. The indentation protrusions on the upper pressure roller and the indentation matching recesses on the lower pressure roller are sequentially matched and embedded during the rotation of the upper and lower pressure rollers, and the embedded positions serve as indentation positions. Thus, equidistant indentations are formed on the aluminium foil by rotating the upper and lower pressure rollers.

[0006] The folding storage bin is provided behind the aforementioned indentation positions. The folding storage bin has a rectangular cross-section chamber along the transmission direction of the aluminium foil, and the chamber penetrates through the front and rear walls of the folding storage bin at both ends. A rectangular sliding block is also arranged in the chamber. The aluminium foil after indentation enters the chamber and is folded at the indentation position under the block. The sliding block is passively slid under the reaction force of the aluminium foil. L-shaped hooks are designed on the upper and lower ends of the chamber at the rear end of the folding storage bin, and the curved parts of the two hooks face each other. In addition, side baffles are designed on the left and right sides of the rear end of the folding storage bin, which are located between the two hooks.

[0007] The upper vacuum air ducts are designed on the inner circumference of the upper compression roller, each of which has two upper vacuum air duct outlet ends and one upper vacuum air duct inlet end. The upper vacuum air duct outlet ends of the n upper vacuum air ducts are located on the clockwise side of the indentation matching recess corresponding to the circumferential position of the second and third protrusions in the upper compression roller, close to the indentation matching recess. The upper vacuum air duct inlet ends of the n upper vacuum air ducts are communicated with the end face of the upper compression roller, and the positions thereof correspond to the positions of the upper vacuum air duct outlet ends of the upper vacuum air ducts in the circumferential direction of the roller body.

[0008] The lower vacuum air ducts are designed on the inner circumference of the lower compression roller, each of which has two lower vacuum air duct outlet ends and one lower vacuum air duct inlet end. The lower vacuum air duct outlet ends of the lower vacuum air ducts are located on the counterclockwise side of the indentation matching recess corresponding to the circumferential position of the second and third protrusions in the lower compression roller, close to the indentation matching recess. The lower vacuum air duct inlet ends of the lower vacuum air ducts are communicated with the end face A of the lower compression roller, and the positions thereof correspond to the positions of the lower vacuum air duct outlet ends of the lower vacuum air ducts in the circumferential direction of the roller body.

[0009] The end face A of the upper compression roller and the end face A of the lower compression roller are provided with a vacuum pumping box between the wall surface of the roller frame. The vacuum pumping box comprises an upper box and a lower box, and the inner wall surfaces of the upper box and the lower box are respectively opposite to the end face A of the upper and lower compression rollers. The inner wall surfaces of the upper box and the lower box are provided with arc-shaped air pumping cavities; the arc-shaped air pumping cavity of the upper box is designed along the circumferential path of the upper vacuum air duct inlet end rotating with the upper compression roller, and the arc length is less than the arc length between two adjacent upper vacuum air duct inlet ends in the circumferential direction of the upper compression roller; at the same time, the clockwise end of the arc-shaped air pumping cavity of the upper box is located on the clockwise side of the indentation position, close to the indentation position; similarly, the arc-shaped air pumping cavity of the lower box is designed along the circumferential path of the lower vacuum air duct inlet end rotating with the lower compression roller, and the arc length is less than the arc length between two adjacent lower vacuum air duct inlet ends in the circumferential direction of the lower compression roller; at the same time, the counterclockwise end of the arc-shaped air pumping cavity of the lower box is located on the counterclockwise side of the indentation position, close to the indentation position. When the upper and lower compression rollers rotate, the upper vacuum air duct inlet end reaches the position of the arc-shaped air pumping cavity of the upper box, and is communicated with the arc-shaped air pumping cavity; until the upper vacuum air duct inlet end leaves the position of the arc-shaped air pumping cavity, at which time the aluminum foil indentation is located inside the upper hook claw; at the same time, the lower vacuum air duct inlet end reaches the position of the arc-shaped air pumping cavity of the lower box, and is communicated with the arc-shaped air pumping cavity; until the lower vacuum air duct inlet end leaves the position of the arc-shaped air pumping cavity, at which time the aluminum foil indentation is located inside the lower hook claw.

[0010] The advantages of the present application are as follows:

[0011] 1) The utility model discloses an aluminum foil organ sheet indentation folding mechanism, only need to convey the strip aluminum foil that is cut through the upper and lower compression roller between the feeding roller, can realize the automatic indentation and preliminary folding of aluminum foil, and further press tightly through the aluminum foil that is preliminarily folded to complete the folding of aluminum foil, make the production of aluminum foil organ sheet change from complete manual operation to mechanization, can significantly improve the production efficiency of aluminum foil organ sheet.

[0012] 2) The utility model discloses an aluminum foil organ sheet folding equipment, makes the standard unification of the aluminum foil organ sheet that produces, and the size is accurate high, and the end face is smooth and tidy, and the product quality is high.

[0013] 3) The utility model discloses an aluminum foil organ sheet folding equipment, simple structure, convenient operation, and can significantly reduce the risk of scratching of the aluminum foil organ sheet of worker processing. DRAWINGS

[0014] Figure 1 It is the whole structure schematic diagram of the utility model discloses an aluminum foil organ sheet indentation folding mechanism;

[0015] Figure 2 It is the upper and lower compression roller structure schematic diagram in the utility model discloses an aluminum foil organ sheet indentation folding mechanism;

[0016] Figure 3 It is the folding storage structure schematic diagram in the utility model discloses an aluminum foil organ sheet indentation folding mechanism;

[0017] Figure 4 It is the mechanism state schematic diagram when carrying out the second aluminum foil embossing;

[0018] Figure 5 It is the mechanism state view when carrying out the third aluminum foil embossing.

[0019] In the drawing:

[0020] 1-roller frame 2-upper compression roller 3-lower compression roller

[0021] 4-vacuum box 5-folding storage bin 6-hook

[0022] 7-side baffle 8-sliding block 201-first recess

[0023] 202-second recess 203-third recess 204-first protrusion

[0024] 205-second protrusion 206-third protrusion 207-fourth protrusion

[0025] 208-indentation protrusion 209-indentation matching recess 210-upper vacuum airway outlet end

[0026] 211-Upper vacuum channel inlet end; 212-Lower vacuum channel outlet end; 213-Lower vacuum channel inlet end

[0027] 401 - Arc-shaped air extraction chamber; 501 - Compartment; 801 - Pull rod Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] This utility model relates to an aluminum foil accordion folding and creasing mechanism, comprising a roller frame 1, an upper pressure roller 2, a lower pressure roller 3, a vacuum chamber 4, a folding and storage compartment 5, hooks 6, side baffles 7, and a slider 8. Figure 1 As shown.

[0030] The roller frame 1 includes a left frame and a right frame; the upper pressure roller 1 and the lower pressure roller 2 are arranged opposite each other, and the two ends of the roller shaft are connected to the left and right frames of the roller frame 1 respectively through a rotating pair.

[0031] The upper pressure roller 1 and the lower pressure roller 2 have the same structural dimensions, as shown above. Figure 2 As shown, three rectangular grooves with rectangular cross-sections are designed along the circumference of the roller body from left to right, namely, the first groove 201, the second groove 202, and the third groove 203. Simultaneously, four protrusions are formed along the circumference of the roller body between the first groove 201 and the left side of the roller body, between the first groove 201 and the second groove 202, between the second groove 202 and the third groove 203, and between the third groove 203 and the right side of the roller body, namely, the first protrusion 204, the second protrusion 205, the third protrusion 206, and the fourth protrusion 207. The overall width of the second protrusion 205, the third protrusion 206, and the second groove 202 is equal to the required width of the folded aluminum foil; the second protrusion 205 and the third protrusion 206 form a set of aluminum foil embossing protrusions. Meanwhile, each protrusion on the roller body is alternately designed with embossing protrusions 208 and embossing recesses 209 at equal angular intervals around the circumference. Each embossing protrusion 208 and embossing recess 209 is designed along the axial direction of the roller body, and the cross-section is an isosceles triangle. Furthermore, the axial positions of the embossing protrusions 208 and embossing recesses 209 on each protrusion correspond.

[0032] The embossing protrusions 208 on each protrusion of the upper pressing roller 2 and the embossing matching recesses 209 are respectively matched and embedded in the embossing matching recesses 209 and the embossing protrusions 208 on the corresponding protrusions of the lower pressing roller 3 in turn during the rotation of the upper and lower pressing rollers, and the embedded positions are the embossing positions; and the top angle of the embossing protrusions 208 is designed to be smaller than that of the embossing matching recesses 209, and the height of the embossing protrusions 208 is higher than that of the embossing matching recesses 209, so that only the tips of the embossing protrusions 208 and the tips of the embossing matching recesses 209 are in contact when the embossing protrusions 208 and the embossing matching recesses 209 are matched at the embossing positions, and the two sides of the embossing protrusions 208 and the two sides of the embossing matching recesses 209 are not in contact, and there is a certain gap between the upper and lower pressing rollers. Finally, after the aluminum foil is conveyed between the upper and lower pressing rollers, the tips of the embossing protrusions 208 and the tips of the embossing matching recesses 209 are matched at the embossing positions, and the folding lines are pressed on the aluminum foil.

[0033] As shown in Figure 1 The upper pressing roller 2 of the above structure is designed with n upper vacuum air ducts on the circumference inside, and each upper vacuum air duct has two upper vacuum air duct outlet ends 210 and one upper vacuum air duct inlet end 211. The upper vacuum air duct outlet ends 210 of the n upper vacuum air ducts are respectively located on the clockwise side of the embossing matching recesses 209 corresponding to the position of the outer wall circumference of the second protrusion 205 and the third protrusion 206 in the upper pressing roller 2, and are close to the embossing matching recesses 209. The upper vacuum air duct inlet ends 211 of the n upper vacuum air ducts are communicated with the end face of the upper pressing roller 2, and the positions thereof correspond to the positions of the upper vacuum air duct outlet ends 210 of the upper vacuum air ducts on the circumference of the roller body.

[0034] The lower pressing roller 3 of the above structure is designed with n lower vacuum air ducts on the circumference inside, and each lower vacuum air duct also has two lower vacuum air duct outlet ends 212 and one lower vacuum air duct inlet end 213. The lower vacuum air duct outlet ends 212 of the n lower vacuum air ducts are respectively located on the counterclockwise side of the embossing matching recesses 209 corresponding to the position of the outer wall circumference of the second protrusion 205 and the third protrusion 206 in the lower pressing roller 3, and are close to the embossing matching recesses 209. The lower vacuum air duct inlet ends 213 of the n lower vacuum air ducts are communicated with the end face A of the lower pressing roller 3, and the positions thereof correspond to the positions of the lower vacuum air duct outlet ends 212 of the lower vacuum air ducts on the circumference of the roller body.

[0035] In the above-described structure, a certain space is reserved between the end face A of the upper pressure roller 2 and the lower pressure roller 3 and the wall of the roller frame 1 during the installation of the upper and lower pressure rollers. A vacuum chamber 4 is installed in this space. The vacuum chamber 4 includes an upper chamber and a lower chamber, the inner walls of which are respectively opposite to the end face A of the upper and lower pressure rollers, and a gap as small as possible is left between them. An arc-shaped suction chamber 401 is opened on the inner wall of the upper and lower chambers; wherein the arc-shaped suction chamber 401 of the upper chamber is designed along the circumferential path of the upper vacuum channel inlet end 213 as the upper pressure roller 203 rotates, and the arc length is less than the arc length along the circumference of the upper pressure roller 2 between two adjacent upper vacuum channel inlet ends 211; at the same time, the clockwise end of the arc-shaped suction chamber 401 of the upper chamber is located on the clockwise side of the indentation position, close to the indentation position. Similarly, the arc-shaped suction chamber 401 of the lower housing is designed along the circumferential path of the lower vacuum channel inlet end 213 as it rotates with the lower pressure roller 3. The arc length is less than the arc length of the lower pressure roller 3 between two adjacent lower vacuum channel inlet ends 213. At the same time, the counterclockwise end of the arc-shaped suction chamber 401 of the lower housing is located on the counterclockwise side of the indentation position, close to the indentation position.

[0036] The two arc-shaped suction chambers 401 are connected to a vacuum device via suction channels 402. During the rotation of the upper pressure roller 2 and the lower pressure roller 3, the inlet ends of the vacuum channels on the upper pressure roller 2 and the lower pressure roller 3 pass through the two arc-shaped suction chambers 401 respectively. As they pass, they connect with the arc-shaped suction chambers 401, allowing the aluminum foil being conveyed forward to be adsorbed at the outlet end of the vacuum channel until the inlet end of the vacuum channel leaves the arc-shaped suction chamber 401. Ultimately, this achieves alternating vacuuming at the inlet ends of the vacuum channels during the movement of the upper pressure roller 2 and the lower pressure roller 3, thereby alternately adsorbing aluminum foil on both sides of the aluminum foil crease, achieving reverse folding of the aluminum foil at the crease.

[0037] The foldable storage compartment 5 has a box-like structure, such as... Figure 3 As shown, the interior has a rectangular cross-section chamber 501 along the aluminum foil conveying direction. Both ends of chamber 501 extend through the front and rear walls of the folding storage compartment 5, and its cross-sectional dimensions are slightly larger than the cross-sectional dimensions of the folded aluminum foil. A rectangular slider 8 is also installed inside chamber 501, which slides under the pushing force applied to the aluminum foil entering chamber 501. A columnar pull rod 801 is vertically designed on the top surface of slider 8, and this pull rod 801 is placed in a groove opened along the rear-forward direction on the top surface of chamber 501. By holding the pull rod and moving it backward along the groove, the slider can be moved out of chamber 501. At the rear end of the folding storage compartment 5, located above and below chamber 501, are two forward-extending L-shaped hooks 6. The curved portions of the two hooks 6 face each other, and the curved portions block the initially folded aluminum foil entering chamber 501, preventing the aluminum foil from being ejected from chamber 501 due to its elasticity. The folding storage compartment 5 also has side baffles 7 on the left and right sides at the rear, located between the two hooks 6.

[0038] The aforementioned folding storage compartment 5 is installed on the platform, with the side baffles 7 passing through the channels formed between the first protrusion 204 and the second protrusion 205, and between the third protrusion 206 and the fourth protrusion 307 in the upper and lower pressure rollers, respectively. Figure 1 As shown, an aluminum foil feeding channel can be formed at the entrance of the chamber 501 through the adjacent side baffles 7, preventing the aluminum foil from deviating after leaving the upper and lower pressure rollers. At the same time, the bent parts of the upper and lower hooks 6 in the folding storage chamber 6 are respectively located in the second grooves of the upper and lower pressure rollers, and the bent parts of the two hooks 6 are respectively located on the upper and lower sides of the embossing position.

[0039] The working principle of this utility model aluminum foil accordion folding mechanism is as follows:

[0040] The aluminum foil to be folded is conveyed by a conveying roller and a feeding table set in front of the mechanism of the present invention. The aluminum foil placed on the feeding table is pressed by the upper and lower feeding rollers and conveyed between the upper and lower pressure rollers. After the aluminum foil enters between the upper and lower pressure rollers, it continues to be conveyed forward by the upper and lower feeding rollers. At the same time, when the corresponding embossing protrusions 208 and embossing recesses 209 of the upper and lower pressure rollers reach the embossing position, the aluminum foil is embossed. A raised indentation 208 on the lower pressure roller 3 cooperates with a recessed indentation 209 on the upper pressure roller 2 to perform the first embossing of the aluminum foil. When the first embossing of the aluminum foil is completed at the embossing position, the upper vacuum channel inlet 211 corresponding to a set of upper vacuum channel outlet ends 210 near the recessed indentation 209 reaches the position of the arc-shaped air extraction chamber 401 of the upper box and communicates with the arc-shaped air extraction chamber 401. Air is extracted near the upper vacuum channel outlet ends 210 near the recessed indentation 209, causing the aluminum foil to be adsorbed onto the circumferential wall of the upper pressure roller 2. At this time, when the aluminum foil continues to be conveyed forward, the front end of the aluminum foil will enter the chamber 501 through the hooks 6. Simultaneously, the upper pressure roller 2 will absorb aluminum foil behind the first embossing and move it towards the hook 6 above the inlet end of the chamber 501. When it reaches the bent part of the upper hook 6, the upper vacuum duct inlet end 211 corresponding to the set of upper vacuum duct outlet ends 210 near the embossing recess 209 leaves the arc-shaped suction chamber 401 position of the upper box and no longer absorbs aluminum foil. At this time, the folded position of the aluminum foil is already inside the upper hook 6. Figure 4 As shown, as the aluminum foil continues to be conveyed forward, it enters the chamber 501 and contacts the slider 8. Blocked by the slider 8, it automatically folds counterclockwise at the crease, while simultaneously pushing the slider 8 to move slightly backward along the chamber 601.

[0041] When the upper vacuum air duct outlet end 210 on the upper compression roller 2 leaves the arc-shaped air extraction cavity 401 of the upper box, the indentation protrusion 208 on the upper compression roller 2 cooperates with the indentation matching recess 209 on the lower compression roller 3 to perform the next indentation pressing of the aluminum foil, and at the same time, the lower vacuum air duct inlet end 213 corresponding to the lower vacuum air duct outlet end 212 near the indentation matching recess 209 reaches the position of the arc-shaped air extraction cavity 401 of the lower box, communicates with the arc-shaped air extraction cavity 401 of the lower box to perform air extraction, so that the aluminum foil is adsorbed on the circumferential wall of the lower compression roller 3 at the rear position of the indentation; at this time, when the aluminum foil continues to be transmitted forward, the lower compression roller 3 moves toward the lower claw 6 below the entrance end of the warehouse 501 with the aluminum foil, and when the lower compression roller 3 moves through the bent part of the lower claw 6, the lower vacuum air duct inlet end 213 corresponding to the lower vacuum air duct outlet end 212 near the indentation matching recess 209 leaves the position of the arc-shaped air extraction cavity 401 of the lower box, and no longer adsorbs the aluminum foil, at this time, the aluminum foil is folded at the indentation position in the lower claw 6, as shown in FIG. 8. Figure 5 As the aluminum foil continues to be conveyed forward, the aluminum foil in the warehouse 501 contacts the sliding block 8, is blocked by the sliding block 8, and is automatically folded clockwise at the indentation, and at the same time, pushes the sliding block 8 to further move slightly forward along the warehouse 501.

[0042] When the lower vacuum air duct inlet end 213 on the lower compression roller 3 leaves the arc-shaped air extraction cavity 401 of the lower box, the indentation protrusion 208 on the lower compression roller 3 cooperates with the indentation recess 209 on the upper compression roller 2 to repeat the above process to perform subsequent indentation pressing, so that the aluminum foil is alternately folded clockwise or counterclockwise in the warehouse 501 to form an organ fold under the premise that the aluminum foil is pressed and can enter the passage.

[0043] After the aluminum foil sent into the upper and lower compression rollers is preliminarily folded in the folding storage warehouse 5, the cylindrical pull rod 801 on the top surface of the sliding block 8 is pulled out, and then the cylindrical pull rod 801 is inserted into the aluminum foil between the folds in the warehouse 501 through the sliding groove on the top surface of the warehouse in the reverse direction, so that the aluminum foil is pushed out of the warehouse 501, and the aluminum foil is further folded and compressed manually.

Claims

1. An aluminum foil concertina crease folding mechanism characterized by: The application relates to a double-roller embossing device for aluminum foil, which comprises upper and lower pressure rollers installed on the upper and lower positions of a roller frame; the upper and lower pressure rollers are of the same structure, the roller bodies are alternately provided with equiangularly spaced isosceles triangular embossing protrusions and embossing matching recesses along the axial direction of the roller bodies; the aluminum foil path is between the upper and lower pressure rollers; the embossing protrusions and the embossing matching recesses on the upper pressure roller are sequentially matched and embedded with the embossing matching recesses and the embossing protrusions on the lower pressure roller during the rotation of the upper and lower pressure rollers, and the embedded positions are taken as the embossing positions; The application further relates to a folding storage bin arranged behind the embossing positions; the folding storage bin is internally provided with a rectangular cross-section chamber along the aluminum foil transmission direction, and the chamber penetrates through the front and rear walls of the folding storage bin; meanwhile, the chamber is further provided with a rectangular sliding block.

2. An aluminum foil concertina creasing and folding mechanism as claimed in claim 1, characterized in that: The roller bodies of the upper and lower pressure rollers are designed as follows: three rectangular cross-section grooves are designed on the roller body from left to right along the circumferential direction of the roller body, and the grooves are sequentially taken as a first groove, a second groove and a third groove; meanwhile, four protrusions are formed along the circumferential direction of the roller body between the first groove and the left side of the roller body, between the first groove and the second groove, between the second groove and the third groove and between the third groove and the right side of the roller body, and the protrusions are sequentially taken as a first protrusion, a second protrusion, a third protrusion and a fourth protrusion; the embossing protrusions and the embossing matching recesses are designed on the circumferential corresponding positions of the protrusions; Further, an L-shaped hook is designed on the upper and lower ends of the chamber at the rear end of the folding storage bin, and the curved portions of the two hooks are opposite to each other; meanwhile, bin side baffles are designed on the left and right sides of the rear end of the folding storage bin and located between the two hooks; the two bin side baffles respectively pass through the channels formed between the first protrusion and the second protrusion and between the third protrusion and the fourth protrusion of the upper and lower pressure rollers; the curved portions of the upper and lower hooks are respectively located in the second groove of the upper and lower pressure rollers, and the curved portions of the two hooks are respectively located on the upper and lower sides of the embossing positions.

3. An aluminum foil concertina creasing and folding mechanism as claimed in claim 2 wherein: A plurality of upper vacuum air channels are designed on the inner circumferential direction of the upper pressure roller, each upper vacuum air channel has two upper vacuum air channel outlet ends and one upper vacuum air channel inlet end; the upper vacuum air channel outlet ends of the n upper vacuum air channels are located on the clockwise side of the embossing matching recesses corresponding to the circumferential positions of the outer walls of the second protrusion and the third protrusion of the upper pressure roller, and are close to the embossing matching recesses; the upper vacuum air channel inlet ends of the n upper vacuum air channels are communicated with the end face of the upper pressure roller, and the positions of the upper vacuum air channel inlet ends correspond to the positions of the upper vacuum air channel outlet ends on the circumferential direction of the roller body; A plurality of lower vacuum air channels are designed on the inner circumferential direction of the lower pressure roller, each lower vacuum air channel has two lower vacuum air channel outlet ends and one lower vacuum air channel inlet end; the lower vacuum air channel outlet ends of the lower vacuum air channels are located on the counterclockwise side of the embossing matching recesses corresponding to the circumferential positions of the outer walls of the second protrusion and the third protrusion of the lower pressure roller, and are close to the embossing matching recesses; the lower vacuum air channel inlet ends of the lower vacuum air channels are communicated with the end face A of the lower pressure roller, and the positions of the lower vacuum air channel inlet ends correspond to the positions of the lower vacuum air channel outlet ends on the circumferential direction of the roller body. The end face A of the upper and lower compression rollers is provided with a vacuum box between the roller frame wall surface; the vacuum box includes an upper box and a lower box, and the inner wall surfaces of the two are respectively opposite to the end face A of the upper and lower compression rollers; the inner wall surfaces of the upper and lower boxes are provided with arc-shaped air extraction cavities; the arc-shaped air extraction cavity of the upper box is designed along the circumferential path of the upper vacuum air channel inlet end rotating with the upper compression roller, and the arc length is less than the arc length along the circumferential direction of the two adjacent upper vacuum air channel inlet ends; at the same time, the arc-shaped air extraction cavity of the upper box is located on the side of the indentation position in the clockwise direction, and the position is close to the indentation position; similarly, the arc-shaped air extraction cavity of the lower box is designed along the circumferential path of the lower vacuum air channel inlet end rotating with the lower compression roller, and the arc length is less than the arc length along the circumferential direction of the two adjacent lower vacuum air channel inlet ends; at the same time, the arc-shaped air extraction cavity of the lower box is located on the side of the indentation position in the counterclockwise direction, and the position is close to the indentation position. The two arc-shaped air extraction cavities are connected to the vacuum extraction equipment through the air extraction channel.

4. An aluminum foil concertina creasing and folding mechanism as claimed in claim 3 wherein: When the upper and lower compression rollers rotate, the upper vacuum air channel inlet end reaches the position of the arc-shaped air extraction cavity of the upper box and is communicated with the arc-shaped air extraction cavity; until the upper vacuum air channel inlet end leaves the position of the arc-shaped air extraction cavity, at this time, the indentation position of the aluminum foil is located in the inner side of the upper claw; at the same time, the lower vacuum air channel inlet end reaches the position of the arc-shaped air extraction cavity of the lower box and is communicated with the arc-shaped air extraction cavity; until the lower vacuum air channel inlet end leaves the position of the arc-shaped air extraction cavity, at this time, the indentation position of the aluminum foil is located in the inner side of the lower claw.

5. The aluminum foil accordion sheet creasing and folding mechanism as claimed in claim 1, wherein: The indentation protrusion top angle is less than the indentation matching recess top angle, and the embossing protrusion height is higher than the embossing matching recess.

6. An aluminum foil concertina creasing and folding mechanism as claimed in claim 1 wherein: The top surface of the sliding block is vertically provided with a columnar pull rod, and the columnar pull rod is arranged in the sliding groove formed in the top surface of the chamber in the front-rear direction.

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