Equipment for realizing automatic folding of aluminum foil organ sheet

Abstract

The invention discloses equipment for realizing automatic folding of an aluminum foil organ sheet, and aluminum foil is conveyed forwards through a designed feeding mechanism and is folded and shaped through an aluminum foil creasing mechanism, a folding and storing mechanism and an arranging and shaping mechanism in sequence. Wherein the aluminum foil creasing mechanism realizes embossing in the aluminum foil conveying process through concave-convex matching of upper and lower pressing rollers in the circumferential direction; the embossed aluminum foil enters a storage bin of the folding storage mechanism to be preliminarily folded, meanwhile, through vacuumizing structures designed on two pressing rollers, the aluminum foil can be alternately adsorbed in the embossing process and is released at an inlet of the storage bin, and it is guaranteed that the aluminum foil can smoothly enter the storage bin. And then the aluminum foil which is preliminarily folded by the storage bin is taken out and put into the arranging and shaping mechanism to be further compressed, and folding of the aluminum foil is completed. Manual production of the aluminum foil organ sheet is changed into mechanical production, and the production efficiency of the aluminum foil organ sheet can be remarkably improved.

Description

Technical Field

[0001] The invention relates to the field of aerospace thermal control technology, and in particular to a device for realizing automatic folding of aluminum foil accordion sheets. Background Art

[0002] Multilayer insulation materials are composed of reflective screens with low emissivity and isolation layers with low thermal conductivity alternately stacked on each other. They have good thermal insulation properties. In theory, the equivalent thermal conductivity of multilayer insulation materials can be as low as 10 -5 W / (m·k), excellent thermal insulation performance. This material is light, non-volatile, dust-free, easy to install, and widely used in the thermal insulation parts of various spacecraft, especially in the outer space and space station. When the spacecraft is running at high speed in the space environment, under the action of space particles, a large number of charged particles will be generated on the surface of the reflective screen of the multi-layer thermal insulation component. If these charged particles are not exported in time, they will accumulate on the surface of the multi-layer component. In severe cases, they will break through the multi-layer thermal insulation component or components. Therefore, the multi-layer thermal insulation component of the spacecraft must also be installed with a multi-layer thermal insulation component grounding wire, so that each layer of the reflective screen of the thermal insulation component can be connected to the shell through the grounding wire to prevent the multi-layer or components from being broken down and damaged. The multi-layer thermal insulation component connects the reflective screen of each layer to the grounding wire through the aluminum foil accordion sheet, thereby achieving perfect grounding of the multi-layer thermal insulation component. Therefore, the quality of the aluminum foil accordion sheet directly determines the grounding performance of the multi-layer thermal insulation component. At present, the production of aluminum foil accordion sheets at home and abroad still adopts a relatively primitive method: manually cut the aluminum foil into 2cm wide strips with a right angle ruler, and then fold it manually. It takes about 10 minutes per person to produce one finished product. Due to manual folding, the end faces of the accordion sheets are uneven, and the finished product rate is about 60%. In addition, the static labor intensity is high, and each person can only produce a maximum of 50 sheets per day, which is inefficient. Therefore, it is an urgent problem to realize the mechanized production of aluminum foil accordion sheets, improve the production efficiency of aluminum foil accordion sheets, and ensure the accurate and uniform size of the accordion sheets after forming in the field of aerospace technology. Summary of the invention

[0003] In view of the above problems, the present invention proposes a device for realizing automatic folding of aluminum foil accordion sheets, which can realize the mechanized production of aluminum foil accordion sheets, which can not only save labor costs and greatly improve production efficiency, but also ensure that the accordion sheets after forming are of uniform standards, highly precise dimensions, and good product consistency, thereby improving the product quality of aluminum foil accordion sheets.

[0004] The present invention is used for realizing the automatic folding of aluminum foil accordion sheets. The aluminum foil is sequentially folded and shaped through a feeding mechanism, an aluminum foil creasing mechanism, a folding and storing mechanism and an accordion sheet finishing and shaping mechanism.

[0005] The aluminum foil creasing mechanism comprises a roller frame, an upper pressing roller and a lower pressing roller; wherein the upper pressing roller and the lower pressing roller are respectively installed at the upper and lower positions of the roller frame to form a rotating pair.

[0006] The upper pressing roller is provided with n groups of protrusions from left to right, each group of protrusions is composed of two protrusions, and is designed along the circumference of the upper pressing roller; the overall width of each group of protrusions is not less than the required width of the folded aluminum foil.

[0007] The embossed protrusions and embossed recesses are alternately designed at equal angles in the circumferential direction of the above-mentioned protrusions. The embossed protrusions and embossed recesses are arranged axially along the upper pressing roller, and the cross-section is an isosceles triangle; and the embossed protrusions and embossed recesses on each protrusion have corresponding axial positions.

[0008] The lower pressing roller has the same structure as the upper pressing roller. The embossed protrusions and embossed recesses on each protrusion in the upper pressing roller are respectively embedded in sequence with the embossed recesses and embossed protrusions on the corresponding protrusions in the lower pressing roller during the rotation of the upper and lower pressing rollers, and the embedded position serves as the embossing position.

[0009] The upper air holes are designed at the corresponding positions on the circumferential direction of the outer wall of each protrusion of the upper pressing roller of the above structure. The upper air holes are located on the clockwise side of each embossed recess and are close to the embossed recess. Furthermore, the upper air holes corresponding to the axial position of the upper pressing roller are grouped as a group, and each group of upper air holes is respectively connected to the same number of upper vacuum air channels designed inside the upper pressing roller; the air extraction end of each upper vacuum air channel is connected to the end face of one end of the upper pressing roller, and is evenly arranged along the circumferential direction.

[0010] The lower air holes are designed at the corresponding positions on the outer wall of each protrusion of the lower pressure roller of the above structure. The lower air holes are located on the counterclockwise side of each embossed recess and are close to the embossed recess. Furthermore, the lower air holes corresponding to the axial position of the lower pressure roller are grouped as a group, and each group of lower air holes is respectively connected to an equal number of lower vacuum air channels designed inside the lower pressure roller. Each lower vacuum air channel is evenly distributed in the circumferential direction inside the lower pressure roller and is designed along the axial direction of the lower pressure roller. The air extraction end is connected to the end face of one end of the lower pressure roller and is evenly arranged along the circumference.

[0011] The side where the upper vacuum air duct exhaust end in the upper roller and the lower vacuum air duct exhaust end in the lower roller are located fit with the side wall of the vacuum box installed on the side wall of the roller frame, and arc-shaped exhaust cavities are opened at the upper and lower positions of the side wall of the vacuum box. Among them, the upper arc-shaped exhaust cavity is located on the circumferential path of the upper vacuum air duct exhaust port rotating with the upper roller; at the same time, the clockwise end of the upper arc-shaped exhaust cavity is located on the clockwise side of the embossing position, close to the embossing position; similarly, the lower arc-shaped exhaust cavity is located on the circumferential path of the lower vacuum air duct exhaust port rotating with the lower roller; at the same time, the counterclockwise end of the lower arc-shaped chamber is located on the counterclockwise side of the embossing position, close to the embossing position.

[0012] The upper arc-shaped vacuum chamber and the lower arc-shaped vacuum chamber are connected to the vacuum pumping equipment through the vacuum channel designed inside the vacuum box. Through the design of the vacuum box, during the rotation of the upper and lower pressure rollers, each vacuum air duct vacuum port passes through the two arc-shaped vacuum chambers during the movement, and will be connected with the vacuum channel inside the vacuum chamber when passing through, and then the aluminum foil being transported can be adsorbed at the vacuum port position of the vacuum air duct until it leaves the arc-shaped vacuum chamber. Finally, each group of air holes in the upper and lower pressure rollers is alternately vacuumed, so that the aluminum foil is alternately adsorbed on both sides of the fold of the aluminum foil, and the reverse folding of the aluminum foil at the fold is achieved.

[0013] The feeding mechanism comprises a feeding platform, an upper feeding roller and a lower feeding roller; wherein the feeding platform is arranged horizontally, and the front part is connected to the roller frame; and the upper surface of the feeding platform has n feeding grooves from left to right.

[0014] The upper feed roller and the lower feed roller are respectively located on the upper and lower sides of the feeding platform, and are connected to the roller frame to form a rotating pair, which is used to realize the forward transmission of the aluminum foil sent out through the feeding trough; n silicone rings are sleeved on the axial corresponding positions of the upper feed roller and the lower feed roller; the axial positions of the n silicone rings correspond to the positions of the n feeding troughs respectively.

[0015] The folding storage mechanism is slidably connected to the guide rails arranged on the support platform in the front-to-back direction; the support platform is horizontally arranged, and the rear part is connected and fixed to the front part of the roller frame; n rectangular cross-section channels along the front-to-back direction are opened inside the main body of the folding storage mechanism, and passive sliding blocking blocks are installed in the n channels.

[0016] Furthermore, the rear end of the main body of the folding and storing mechanism is located at the two channels, and an L-shaped hook extending backward is designed on the upper and lower parts, and the bent parts of the two hooks are opposite to each other; when the folding and storing mechanism moves backward to the aluminum foil folding and storing position, the bent parts of the upper and lower hooks at the rear ends of the n channels in the folding and storing mechanism are respectively located in the grooves formed between the adjacent groups of protrusions in the upper and lower pressing rollers, and the bent parts of the two hooks are respectively located on the upper and lower sides of the embossing position; when the upper and lower pressing rollers emboss the aluminum foil at the embossing position, the upper and lower pressing rollers are rolled in combination with the alternating vacuuming effect of the air holes on both, so that the aluminum foil is alternately adsorbed on the upper and lower pressing rollers during the forward transmission, and is brought into the space between the two hooks by the rotation of the pressing rollers, and further enters the channel through the entrance end of the channel, and cooperates with the blocking blocks in the channel, so that the aluminum foil is alternately folded clockwise and counterclockwise at the embossing position; during the folding process, the blocking block is pushed forward by the aluminum foil to slide forward; after the folding is completed, the blocking block is taken out, and then the initially folded aluminum foil is taken out and transferred to the sorting and shaping mechanism for overall positioning.

[0017] The accordion sheet finishing and shaping mechanism includes a compression chamber, a safety cover and a compression rod, which are fixedly installed at any position on the equipment frame. Among them, there is a cavity inside the compression chamber, and the cavity is used to place the aluminum foil after preliminary folding; the cross-sectional size of the cavity is equal to the size of the aluminum foil after folding; the compression rod is a rectangular cross-sectional rod, one end of which is an extrusion end, which is arranged in the cavity, and the end face is perpendicular to the left and right side walls of the cavity axis; by pushing the compression rod by hand to slide along the cavity, the aluminum foil placed in the cavity after preliminary folding is squeezed, so that the folded aluminum foil structure is compact.

[0018] The advantages of the present invention are:

[0019] 1) The aluminum foil accordion sheet folding device of the present invention only needs to put the cut strip aluminum foil into the equipment feed port to realize automatic feeding and automatically fold the aluminum foil into an accordion sheet shape, so that the production of aluminum foil accordion sheets is transformed from manual to mechanized, which can significantly improve the production efficiency of aluminum foil accordion sheets.

[0020] 2) The aluminum foil accordion sheet folding equipment of the present invention realizes the mechanized folding of aluminum foil accordion sheets, which not only significantly improves the production efficiency and yield rate of aluminum foil accordion sheets, but also produces aluminum foil accordion sheets with unified standards, high dimensional accuracy, smooth and neat end faces, and high product quality.

[0021] 3) The aluminum foil accordion sheet folding device of the present invention transforms the production of aluminum foil accordion sheets from manual operation by workers to mechanized production, thereby reducing the physical labor intensity of workers and the labor cost of products.

[0022] 4) The aluminum foil accordion sheet folding equipment of the present invention only requires workers to place strips of aluminum foil at the feed port of the accordion sheet equipment when folding the accordion sheets, which significantly reduces the risk of aluminum foil scratches during the manual folding of the accordion sheets by workers and effectively protects the safety of the operating workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the aluminum foil accordion sheet folding device of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of the aluminum foil creasing mechanism in the aluminum foil accordion sheet folding device of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the upper and lower pressing rollers in the aluminum foil accordion sheet folding device of the present invention;

[0026] Figure 4 It is a schematic diagram of the vacuum box structure in the aluminum foil accordion sheet folding device of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the feeding mechanism in the aluminum foil accordion sheet folding device of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the aluminum foil folding and storing mechanism in the aluminum foil accordion sheet folding device of the present invention;

[0029] Figure 7 It is a schematic diagram of the position of the hook claw when the aluminum foil folding and storage mechanism in the aluminum foil accordion sheet folding device of the present invention is in the aluminum foil folding and storage position;

[0030] Figure 8 It is a schematic diagram of the structure of the accordion sheet arrangement and shaping mechanism in the aluminum foil accordion sheet folding device of the present invention;

[0031] Fig. 9 This is a schematic diagram of the first embossing process of the aluminum foil by the aluminum foil accordion sheet folding device of the present invention;

[0032] Fig.10 It is a schematic diagram of the second embossing process of the aluminum foil by the aluminum foil accordion sheet folding device of the present invention;

[0033] Fig.11 It is a schematic diagram of the third embossing process of the aluminum foil by the aluminum foil accordion sheet folding equipment of the present invention.

[0034] In the figure:

[0035] 1- Equipment rack 2- Aluminum foil creasing mechanism 3- Aluminum foil folding and storage mechanism

[0036] 4- Organ sheet finishing and shaping mechanism 5- Feeding mechanism 6- Electronic control system

[0037] 201-bottom plate 202-roller frame 203-upper pressure roller

[0038] 204-lower pressure roller 205-connector 206-embossed protrusion

[0039] 207-embossed recess 208-upper air hole 209-upper vacuum air channel

[0040] 210-lower air hole 211-lower vacuum airway 212-vacuum box

[0041] 212a-upper arc-shaped air pumping cavity 212b-lower arc-shaped air pumping cavity 301-support platform

[0042] 302-channel 303-hook 304-insertion rod

[0043] 401-compression chamber 402-safety cover 403-compression rod

[0044] 404- cavity 501- feeding platform 501a- rectangular protrusion

[0045] 501b-feeding trough 502-upper feed roller 503-lower feed roller

[0046] 504-U-shaped frame 505-connecting rod 506-crossbeam

[0047] 507-limit plate 508-baffle DETAILED DESCRIPTION

[0048] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0049] The device for realizing automatic folding of aluminum foil accordion sheets of the present invention comprises an equipment frame 1, an aluminum foil creasing mechanism 2, an aluminum foil folding and storing mechanism 3, an accordion sheet arranging and shaping mechanism 4, a feeding mechanism 5 and an electric control system 6. Figure 1 shown.

[0050] The equipment frame 1 is used for the installation and arrangement of the aluminum foil creasing mechanism 2, the aluminum foil folding structure 3, the accordion sheet finishing and shaping mechanism 4, the feeding mechanism 5 and the electric control system 6. The equipment frame 1 is a rectangular horizontal platform as a whole, and the bottom surface is set on the ground by installing support legs in the circumferential direction. The aluminum foil is transported forward by the feeding mechanism 5, and passes through the aluminum foil creasing mechanism 2, the folding and storage mechanism 3 and the accordion sheet finishing and shaping mechanism 4 in sequence to complete the folding and shaping.

[0051] The aluminum foil creasing mechanism 2 comprises a bottom plate 201, a roller frame 202, an upper pressing roller 203 and a lower pressing roller 204. Figure 2 , Figure 3 shown.

[0052] The bottom plate 201 is a rectangular flat plate, which is horizontally arranged on the upper surface of the equipment frame 1. Screw holes are opened at the four corners of the bottom plate 201, and the bottom plate 201 is fixed to the upper surface of the equipment frame 1 by screws. A roller frame 202 is fixedly installed on the upper surface of the bottom plate 201.

[0053] The roller frame 202 is a frame structure composed of left and right side walls and a front support platform and a rear support platform. An upper pressure roller 203 and a lower pressure roller 204 are respectively installed at the upper and lower positions of the middle of the left and right sides of the roller frame 202. Among them, the two ends of the roller shaft of the lower pressure roller 204 are connected to the left and right side walls of the roller frame 202 through bearing brackets to form a revolving pair. The two ends of the upper pressure roller 203 are coaxially connected to two rectangular connectors 205 through bearings to form a revolving pair; further, the two rectangular connectors 205 are respectively embedded in the rectangular grooves opened on the left and right side walls of the roller frame 202, so that the dovetail grooves designed on both sides of the rectangular connector 205 cooperate with the dovetail structure protrusions designed on both sides of the rectangular groove to achieve sliding cooperation between the rectangular connector 205 and the rectangular groove; at the same time, a vertically arranged lead screw 206 is installed on the roller frame, the top of the lead screw 206 is connected to the center of the bottom surface of the rectangular connector 205, and the bottom of the lead screw 206 is designed to be hexagonal, which is used to cooperate with a wrench to realize the rotation of the lead screw 206. Therefore, the rotation of the lead screw 206 can drive the rectangular connector 205 to move up and down to achieve longitudinal position adjustment, thereby achieving longitudinal spacing adjustment between the upper pressure roller 203 and the lower pressure roller 204 to accommodate the passage of aluminum foil folded accordion sheets of different thicknesses and adjust the folding effect of the aluminum foil folded square accordion sheets.

[0054] The upper pressing roller 203 is provided with 5 grooves along the circumference of the upper pressing roller 203 from left to right, which are respectively referred to as the first to fifth grooves, and each groove has a rectangular cross section, such as Figure 3 As shown. Among them, the width of the second groove is equal to that of the fourth groove, and the width of the first groove, the third groove and the fifth groove is equal and smaller than the width of the third groove and the fourth groove. After designing the above grooves, a total of 6 protrusions will be formed between the first groove and the left side of the upper pressing roller 203, between the first groove and the second groove, between the second groove and the third groove, between the third groove and the fourth groove, between the fourth groove and the fifth groove, and between the fifth groove and the right side of the upper pressing roller 203, which are respectively the first to sixth protrusions. Among them, the widths of the second to fifth protrusions are equal, and the widths of the first protrusion and the sixth protrusion are equal and larger than the widths of the remaining protrusions. The overall width of the second and third protrusions and the overall width of the fourth and fifth protrusions are equal to the required folded aluminum foil width, as two groups of aluminum foil embossing protrusions.

[0055] like Figure 4 As shown, the embossed protrusions 207 and the embossed recesses 208 are alternately designed at equal angles in the circumferential direction of the above-mentioned protrusions. The embossed protrusions 207 and the embossed recesses 208 are arranged axially along the upper pressing roller 203, and the cross-section is an isosceles triangle; and the axial positions of the embossed protrusions 207 and the embossed recesses 208 on each protrusion correspond to each other.

[0056] The lower pressing roller 204 has the same structure as the upper pressing roller 203, and the grooves and protrusions are arranged correspondingly in the axial direction. Before starting the embossing operation, the upper and lower positions of the upper pressing roller 203 are adjusted so that the embossed protrusions 207 and the embossed recesses 208 on the protrusions in the upper pressing roller 203 can be respectively matched and embedded in sequence with the embossed recesses 208 and the embossed protrusions 207 on the corresponding protrusions in the lower pressing roller 204 during the rotation of the upper and lower pressing rollers. The embedded position serves as the embossing position, at which only the tip of the embossed protrusion 207 contacts the tip of the embossed recess 208, and the two sides of the embossed protrusion 207 do not contact the two sides of the embossed recess 208, and there is a certain gap between the upper and lower pressing rollers; this can be achieved by designing that the height of the embossed protrusion 207 is higher than the embossed recess 208, and the top angle of the embossed protrusion 207 is smaller than the top angle of the embossed recess 208. Therefore, when the aluminum foil is conveyed to the embossing position, the tip of the embossing protrusion 207 cooperates with the tip of the embossing recess 208 to emboss folding lines on the aluminum foil.

[0057] The upper air holes 209 are designed at the corresponding positions of the outer wall of the second to fifth protrusions on the upper pressing roller 203 of the above structure in the circumferential direction. The upper air holes 209 are located on the clockwise side of each embossed recess 208 and are located close to the embossed recess 208. Further, the upper air holes 209 corresponding to the axial position of the upper pressing roller 203 are grouped as a group, and each group of upper air holes 209 is respectively connected to the same number of upper vacuum air channels 210 designed inside the upper pressing roller 203. Each upper vacuum air channel 210 is uniformly distributed in the circumferential direction inside the upper pressing roller 203 and is designed along the axial direction of the upper pressing roller 203. The air extraction end 3 is connected to the end surface of one end of the upper pressing roller 203.

[0058] The lower air holes 211 are also designed at the corresponding positions of the outer wall of the second to fifth protrusions on the lower pressing roller 204 of the above structure in the circumferential direction. The lower air holes 211 are located on the counterclockwise side of each embossed recess 208 and are located close to the embossed recess 208. Furthermore, the lower air holes 211 corresponding to the axial position of the lower pressing roller 204 are grouped as a group, and each group of lower air holes 211 is respectively connected to the same number of lower vacuum air channels 212 designed inside the lower pressing roller 204. Each lower vacuum air channel 212 is evenly distributed in the circumferential direction inside the lower pressing roller 204 and is designed along the axial direction of the lower pressing roller 204, and the air extraction end is connected to the end face of one end of the lower pressing roller 204.

[0059] The upper vacuum air passage 210 in the upper pressure roller 203 and the lower vacuum air passage 212 in the lower pressure roller 204 are respectively connected to arc-shaped air extraction cavities provided at upper and lower positions on the side wall of a vacuum box 213 installed on the side wall of the roller frame 202. The vacuum box 213 is a cubic structure, and the side surfaces where the upper and lower arc-shaped air extraction cavities are located are opposite to the end surfaces where the air extraction ends of the vacuum air passages in the upper and lower pressure rollers are located, with a gap as small as possible between them. Among them, the width of the upper arc-shaped air suction chamber 213a is equal to the diameter of the air suction end of the upper vacuum air duct 210 on the end face of the upper pressing roller 203, the arc length is less than the arc length of the arc between two adjacent upper vacuum air ducts 210, and the upper arc-shaped air suction chamber 213a is located on the circumferential path of the air suction port of the upper vacuum air duct 210 rotating with the upper pressing roller 203. At the same time, the clockwise end of the upper arc-shaped air suction chamber 213a is located on the clockwise side of the mating position of the embossed protrusion 207 and the embossed recess 208 in the upper and lower pressing rollers, and is close to the mating position. Similarly, the width of the lower arc-shaped exhaust cavity 213b is equal to the width of the exhaust end of the lower vacuum air duct 212 on the end face of the lower pressure roller 204, and is located on the circumferential path of the exhaust port of the lower vacuum air duct 212 rotating with the lower pressure roller 204. At the same time, the counterclockwise end of the lower arc-shaped chamber 213b is located on the counterclockwise side of the mating position of the embossed protrusion 207 and the embossed recess 208 in the upper and lower pressure rollers, and is close to the mating position.

[0060] The upper arc-shaped vacuum chamber 213a and the lower arc-shaped vacuum chamber 213b are connected to the vacuum pumping device through the vacuum pumping channel designed inside the vacuum box 213. Through the design of the vacuum box 213, during the rotation of the upper pressing roller 203 and the lower pressing roller 204, each vacuum airway vacuum port can pass through the two arc-shaped vacuum chambers during the movement, and will be connected with the vacuum chamber 213 internal vacuum channel when passing through, and then the aluminum foil being transported forward can be adsorbed at the vacuum airway vacuum port position until it leaves the arc-shaped vacuum chamber; finally, each group of air holes in the upper pressing roller 203 and the lower pressing roller 204 is alternately vacuumed, so that the aluminum foil can be alternately adsorbed on both sides of the aluminum foil fold, and the aluminum foil can be reversely folded at the fold.

[0061] like Figure 5 As shown, the feeding mechanism 5 includes a feeding platform 501, an upper feeding roller 502 and a lower feeding roller 503, which are used to forwardly transport the aluminum foil to be folded. The feeding platform 501 is a rectangular plate structure, which is horizontally arranged, and the front bottom surface is overlapped on the rear support platform of the roller frame 202, and is fixed to the support platform by bolts; the top surface of the feeding platform 501 is vertically located in the gap between the upper and lower pressure rollers, and the front edge of the feeding platform 501 is as close as possible to the embossing position between the upper and lower pressure rollers.

[0062] The upper surface of the feeding platform 501 has three rectangular protrusions 501a designed along the front-back direction from left to right, and two rectangular grooves are formed between the three rectangular protrusions 501a, which serve as feeding grooves 501b. The width of the feeding groove 501b is equal to the width of the aluminum foil to be folded, and is used to place the aluminum foil and limit the displacement of the aluminum foil in the left and right directions during the forward movement of the aluminum foil.

[0063] The upper feed roller 502 and the lower feed roller 503 are used to realize the forward transmission of the aluminum foil fed through the feed slot 501b. The lower feed roller 503 is located below the feed platform 501 and at the two openings opened on the feed platform 501, and the highest point section is flush with the upper surface of the feed platform 501. The two ends of the roller shaft of the lower feed roller 503 are respectively connected to the left and right side walls of the roller frame 202 through bearings to form a rotating pair. The upper feed roller 502 and the lower feed roller 503 are symmetrically arranged up and down, and the two ends of the roller shaft are connected to the two side walls of a U-shaped frame 504 through bearings to form a rotating pair. The end of the U-shaped frame 504 is designed with two longitudinally arranged connecting rods 505, which pass through the openings on the beam 506 installed between the left and right side walls of the roller frame 202 above the feeding platform 202b and are connected to the limit plate 507; at the same time, springs are sleeved on the two connecting rods 505 and are located between the beam 506 and the U-shaped frame 504.

[0064] Two silicone rings are sleeved on the axial corresponding positions of the upper feed roller 502 and the lower feed roller 503; the axial positions of the two silicone rings correspond to the positions of the rectangular grooves on the upper surface of the feed platform 501. Therefore, through the elastic force of the spring, the two silicone rings on the upper feed roller 502 can always be tightly fitted with the two silicone rings on the lower feed roller 503 through the two openings opened on the feed platform 501. When the aluminum foil is conveyed, only the silicone rings of the upper and lower feed rollers contact the aluminum foil and will not scratch the aluminum foil. At the same time, in order to prevent the upper and lower positions from shifting during the conveyance of the aluminum foil, a baffle 508 is installed above the front side of the feed platform 501. The baffle 508 is arranged parallel to the feed platform 501, and there is a gap between the baffle 508 and the feed platform 501 for only the aluminum foil to pass through; at the same time, an opening corresponding to the opening on the feed platform 501 is opened on the baffle 508 for the upper and lower feed rollers 502 to contact the silicone.

[0065] like Figure 1 As shown, the main body of the folding storage mechanism 3 is a box structure, and two sliders are designed on the bottom surface. The two sliders are respectively slidably connected with two guide rails designed along the front and rear directions on the upper surface of the support platform 301, so that the folding storage mechanism 3 can move along the front and rear directions on the support platform 301. The support platform 301 is a rectangular plate-like structure, which is horizontally arranged, and the lower surface of the rear part is overlapped on the front support platform of the roller frame 202, and is fixed to the support platform by bolts, so that the upper surface of the support platform 301 is vertically lower than the upper surface of the feeding platform 501.

[0066] like Figure 6 As shown, the main body of the folding storage mechanism 3 is provided with two rectangular cross-section channels 302 along the front-to-back direction, and the cross-section size is larger than the size of the folded aluminum foil. The rear end and the front end of the two channels 302 are respectively connected to the rear side and the front side of the main body. At the same time, rectangular blocking blocks are also installed in the two channels 302, which passively slide forward during the folding process of the aluminum foil.

[0067] Furthermore, at the rear end of the main body of the folding storage mechanism 3, an L-shaped hook 303 extending backward is designed at the upper and lower parts of the two channels 302, and the bent parts of the two hooks 303 are opposite to each other, which are used to block the folded aluminum foil in the channel 302 to prevent the elastic effect of the uncompacted aluminum foil from causing the aluminum foil to bounce back from the channel 302.

[0068] Furthermore, the rear end of the main body of the folding storage mechanism 3 is designed with three insertion rods 304 of the same length, and the two channels 302 are respectively located between two adjacent insertion rods 304. Therefore, when the folding storage mechanism 3 moves backward to the extreme position, the ends of the three insertion rods respectively pass through the channels 302 formed between the first, third and fifth grooves in the upper and lower pressure rollers, thereby forming an aluminum foil feeding channel at the entrance of the two channels 302 through two adjacent insertion rods 304, preventing the aluminum foil from running off after leaving the upper and lower pressure rollers, such as Figure 5 At this time, the folding and storage mechanism 3 reaches the aluminum foil folding and storage position, and the bent parts of the upper and lower hooks 303 at the rear ends of the two channels 302 in the folding and storage mechanism 3 are respectively located in the second groove and the fourth groove in the upper and lower pressing rollers, and the bent parts of the two hooks 303 are respectively located at the upper and lower sides of the embossing position of the upper pressing roller 203 and the lower pressing roller 204, as shown in FIG. Figure 7 As shown; at the same time, the left and right side walls of the two channels 302 are respectively located outside the second and third protrusions and outside the fourth and fifth protrusions on the upper and lower pressure rollers.

[0069] Therefore, after the upper and lower pressure rollers emboss the aluminum foil at the embossing position, the aluminum foil can enter the channel 302 through the two hook claws 303. Through the rolling of the upper and lower pressure rollers and the alternating vacuuming effect of the air holes on the two rollers, the aluminum foil is alternately adsorbed on the upper and lower pressure rollers during the forward transmission, and brought into the two hook claws 303 by the rotation of the pressure rollers, and further enters the channel 302 through the entrance end of the channel 302, and cooperates with the blocking blocks in the channel 302, so that the aluminum foil can be folded alternately clockwise and counterclockwise at the embossing position. During the folding process, the aluminum foil will push the blocking block forward to slide forward. As more and more aluminum foil enters the channel after folding, the blocking block will continue to move toward the outlet end of the channel 302. Since the length of the channel 302 is much greater than the length of the aluminum foil after folding, the blocking block will not fall out from the outlet end of the channel 302. After folding, the blocking block is first taken out from the discharge port, and then the folded aluminum foil is taken out and transferred to the accordion sheet finishing and shaping mechanism 4 for overall positioning.

[0070] like Figure 8 As shown, the accordion sheet finishing and shaping mechanism 4 includes a compression chamber 401, a safety cover 402 and a compression rod 403, which are integrally fixedly installed at any position on the equipment frame. Among them, the compression chamber 401 is installed on the top surface platform of the support frame, and is fixed to the front upper surface of the equipment frame 1 through the support frame. The compression chamber 401 has a cavity 404 designed along the front and rear directions, and the cross-sectional size of the cavity 404 is equal to the size of the folded aluminum foil. The compression rod 403 is a rectangular cross-section rod, and the bottom surface is fitted with the surface of the top surface platform of the support frame. The front end is the extrusion end, which is arranged at the rear end of the cavity 404, and the end face is perpendicular to the left and right side walls of the cavity 404. The compression rod 403 can be pushed by holding the end of the compression rod 403 to slide forward and backward along the cavity 404, thereby squeezing the folded aluminum foil placed inside the cavity, so that the folded aluminum foil structure is compact. In order to prevent the relative position between the aluminum foil and the cavity 404 from radially shifting during the extrusion process, two L-shaped positioning members are fixedly installed on the top surface of the compression cavity 401 and located on the side of the cavity 404. One side A of the two L-shaped positioning members is parallel to the top surface of the compression cavity 401, and the other end is in contact with the top surface of the compression cavity 401 and fixed to the compression cavity 401 by screws. As a result, a slide groove A and a slide groove B are formed between the side A of the two positioning members and the top surface of the compression cavity. The safety cover 402 is a rectangular plate-shaped structure, which is in contact with the top surface of the compression cavity 401. The opposite ends of the safety cover 402 are respectively matched with the slide groove A and the slide groove B, and can slide in the left and right directions, so that the top surface of the cavity 404 can be sealed by the safety cover 402, so that the aluminum foil is completely in the cavity for compression.

[0071] In the present invention, both the front and rear ends of the guide rail on the support platform are equipped with limit blocks and folding storage mechanism 3 sensing devices. When the folding storage mechanism 3 moves backward to the folding storage position, the sensing device at the front end of the guide rail will receive the storage mechanism position signal A, and the entire device enters the unlocked feeding state (the device self-checks, all parts are normal, and waits for the device to receive the start command). When the folding storage mechanism 3 of the receiving bin slides forward, leaves the aluminum foil storage position and reaches the rear end of the guide rail, the sensing device at the rear end of the guide rail receives the storage mechanism position B signal, and the device enters the locked state (the device is in the power-on state, and the device start button does not receive the start signal). At this time, the aluminum foil that has been preliminarily folded can be taken out from the folding storage mechanism 3 and placed in the accordion sheet finishing and shaping mechanism 4 for finishing.

[0072] The electronic control system 6 includes servo electrodes, an industrial computer, a touch screen, a distribution box and sensors, etc. The electronic control system receives and analyzes signals from the sensors and the touch screen by the industrial computer, and sends corresponding signal instructions according to the signal analysis results to drive the equipment to complete the folding of the aluminum foil.

[0073] The aluminum foil accordion sheet folding device of the above structure has the following specific working methods:

[0074] Turn on the power and air source of the equipment, set the equipment operation parameters, then put the blocking blocks in the two channels 302 of the folding storage mechanism 3, and further slide the folding storage mechanism 3 backward until it contacts the limit block. At this time, the sensing device at the rear end of the guide rail receives the storage mechanism position signal A, and the entire device enters the unlocked feeding state. Then put the long strip of aluminum foil into the feeding trough 501b, and lift the upper feeding roller 502 upward to separate it from the lower feeding roller 501, and further manually push the aluminum foil forward along the feeding trough 501b between the upper and lower feeding rollers, and put down the upper feeding roller 502. The upper and lower feeding rollers clamp the aluminum foil under the action of the spring. At this time, press the equipment start button to start the equipment, and the upper and lower feeding rollers rotate to convey the aluminum foil forward to between the upper and lower pressure rollers, and the upper and lower pressure rollers are used to emboss the aluminum foil accordion sheet, and the folding storage mechanism 3 is used to realize the folding of the embossed aluminum foil accordion sheet.

[0075] Each of the above embossing and folding processes is carried out in the process of embossing-adsorption-desorption-folding, specifically:

[0076] When the aluminum foil enters between the upper and lower pressing rollers, it is continuously conveyed forward by the upper and lower feeding rollers, and the corresponding embossing protrusions 207 and embossing recesses 208 of the upper and lower pressing rollers reach the embossing position to emboss the aluminum foil. Here, the embossing process of the first embossing of the aluminum foil by an embossing protrusion 207 on the lower pressing roller 204 and the corresponding embossing recess 208 on the upper pressing roller 203 is described as follows:

[0077] like Fig. 9 As shown, when the first embossing of the aluminum foil is completed at the embossing position, the suction end of the upper vacuum air channel 210 connected to a group of upper air holes 209 near the embossing recess 208 reaches the position of the upper arc-shaped suction chamber 213a and is connected to the upper arc-shaped suction chamber 213a. The group of upper air holes 209 near the embossing recess 208 evacuate air to make the aluminum foil adsorbed on the circumferential wall surface of the upper pressing roller 203; at this time, when the aluminum foil continues to be transported forward, the front end of the aluminum foil will enter the channel 302 between the upper and lower hooks 303. At the same time, the upper pressing roller 203 will adsorb the aluminum foil at the rear position of the first embossing, and move the aluminum foil toward the hook 303 above the entrance end of the channel 302. When it moves to the bent part of the hook 303, as shown in FIG. Fig.10 As shown, the suction end of the upper vacuum air duct 210 connected to a group of upper air holes 209 near the embossed recess 208 leaves the upper arc-shaped suction cavity 213a and no longer adsorbs the aluminum foil. At this time, the fold position of the aluminum foil is already located in the channel 302; as the aluminum foil continues to be transported forward, the aluminum foil in the channel 302 contacts the blocking block, is blocked by the blocking block, and automatically folds counterclockwise at the fold, while pushing the blocking block to move slightly forward along the channel 302.

[0078] When the exhaust end of the upper vacuum air channel 210 on the upper pressing roller 203 leaves the upper arc-shaped exhaust cavity 213a, the embossed protrusion 207 on the upper pressing roller 203 cooperates with the embossed recess 208 on the lower pressing roller 204 to perform the second embossing of the aluminum foil. At the same time, the exhaust end of the lower vacuum air channel 212 connected to a group of lower air holes 211 close to the embossed recess 208 reaches the position of the lower arc-shaped exhaust cavity 213b, and is connected to the lower arc-shaped exhaust cavity 213b for exhaust, so that the rear position of the second embossing of the aluminum foil is adsorbed on the circumferential wall surface of the lower pressing roller 204; at this time, when the aluminum foil continues to be transported forward, the lower pressing roller 204 moves with the aluminum foil toward the hook 303 below the entrance end of the channel 302. When it moves to the bent part of the lower hook 303, as shown in FIG. Fig.11 As shown, the suction end of the lower vacuum air duct 212 connected to a group of lower air holes 211 near the embossed recess 208 leaves the lower arc-shaped suction cavity 213b and no longer adsorbs the aluminum foil. At this time, the fold position of the aluminum foil is already located in the channel 302; as the aluminum foil continues to be transported forward, the aluminum foil in the channel contacts the blocking block, is blocked by the blocking block, and automatically folds clockwise at the fold, while pushing the blocking block to move slightly forward along the channel 302.

[0079] When the exhaust end of the lower vacuum air duct 212 on the above-mentioned lower pressing roller 204 leaves the lower arc-shaped exhaust cavity 213b, the embossed protrusion 207 on the lower pressing roller 204 cooperates with the embossed recess 208 on the upper pressing roller 203, and the above-mentioned process is repeated for subsequent embossing pressing. Under the premise of ensuring that the aluminum foil can enter the channel after embossing, the aluminum foil is initially folded alternately clockwise or counterclockwise in the channel to form an accordion fold; after the embossing of the aluminum foil is completed, the upper and lower pressing rollers stop rotating, the counter counts once, and the cycle ends.

[0080] After all the aluminum foils fed in are preliminarily folded in the folding and storage mechanism 3, the folded aluminum foils are not compressed; therefore, the folding and storage mechanism 3 is moved forward until it reaches the position B of the sensing device at the front end of the guide rail on the support platform 301, and the entire device is locked. At this time, the blocking block is manually pulled out, and the preliminarily folded aluminum foil in the channel 302 is taken out and put into the cavity 404 of the finishing and shaping mechanism, the safety cover 402 is closed, and then the compression rod 403 is pushed to compress and shape the accordion sheet; then the compression rod 403 is returned to its original position, the safety cover 402 is opened, and the accordion sheet is taken out, and the folding of the aluminum foil accordion sheet is completed.

Claims

1. A device for realizing automatic folding of aluminum foil accordion sheets, characterized in that: The aluminum foil is folded and shaped in sequence through the feeding mechanism, the aluminum foil creasing mechanism, the folding and storing mechanism and the accordion sheet finishing and shaping mechanism; The aluminum foil creasing mechanism comprises a roller frame, an upper pressing roller and a lower pressing roller; wherein the upper pressing roller and the lower pressing roller are respectively installed at the upper and lower positions of the roller frame to form a rotating pair; The upper pressing roller is provided with n groups of protrusions from left to right, each group of protrusions is two, and is designed along the circumference of the upper pressing roller; the overall width of each group of protrusions is not less than the required width of the folded aluminum foil; The embossed protrusions and embossed recesses are alternately designed at equal angles in the circumferential direction of the above-mentioned protrusions. The embossed protrusions and embossed recesses are arranged along the axial direction of the upper pressing roller, and the cross section is an isosceles triangle; and the embossed protrusions and embossed recesses on each protrusion correspond to each other in axial position; The lower pressing roller has the same structure as the upper pressing roller, and the embossed protrusions and embossed recesses on each protrusion of the upper pressing roller are respectively matched and embedded with the embossed recesses and embossed protrusions on the corresponding protrusions of the lower pressing roller in sequence during the rotation of the upper and lower pressing rollers, and the embedded position is used as the embossing position; Upper air holes are designed at corresponding positions on the circumferential direction of the outer wall of each protrusion of the upper pressing roller of the above structure. The upper air holes are located on the clockwise side of each embossed recess and are close to the embossed recess. Furthermore, the upper air holes corresponding to the axial position of the upper pressing roller are grouped as a group, and each group of upper air holes is respectively connected to an equal number of upper vacuum air channels designed inside the upper pressing roller. The air suction end of each upper vacuum air channel is connected to the end face of one end of the upper pressing roller, and is evenly arranged along the circumferential direction. The lower air holes are designed at the corresponding positions on the circumferential direction of the outer wall of each protrusion of the lower pressure roller of the above structure. The lower air holes are located on the counterclockwise side of each embossed recess and are close to the embossed recess. Furthermore, the lower air holes corresponding to the axial position of the lower pressure roller are grouped as a group, and each group of lower air holes is respectively connected to an equal number of lower vacuum air channels designed inside the lower pressure roller. Each lower vacuum air channel is evenly distributed in the circumferential direction inside the lower pressure roller and is designed along the axial direction of the lower pressure roller. The air extraction end is connected to the end face of one end of the lower pressure roller and is evenly arranged along the circumferential direction. The side where the air extraction end of the upper vacuum air duct in the upper pressing roller and the air extraction end of the lower vacuum air duct in the lower pressing roller are located are in contact with the side wall of the vacuum box installed on the side wall of the roller frame, and arc-shaped air extraction cavities are opened at the upper and lower positions of the side wall of the vacuum box; wherein, the upper arc-shaped air extraction cavity is located on the circumferential path of the air extraction port of the upper vacuum air duct rotating with the upper pressing roller; at the same time, the clockwise end of the upper arc-shaped air extraction cavity is located on the clockwise side of the embossing position, close to the embossing position; similarly, the lower arc-shaped air extraction cavity is located on the circumferential path of the air extraction port of the lower vacuum air duct rotating with the lower pressing roller; at the same time, the counterclockwise end of the lower arc-shaped chamber is located on the counterclockwise side of the embossing position, close to the embossing position; The upper arc-shaped vacuum chamber and the lower arc-shaped vacuum chamber are respectively connected to the vacuum pumping equipment through the vacuum channel designed inside the vacuum box; through the design of the vacuum box, during the rotation of the upper pressing roller and the lower pressing roller, each vacuum air channel vacuum port passes through the two arc-shaped vacuum chambers during the movement, and is connected with the vacuum channel inside the vacuum chamber when passing through, so that the aluminum foil being transported can be adsorbed at the vacuum port position of the vacuum air channel until it leaves the arc-shaped vacuum chamber; finally, each group of air holes in the upper pressing roller and the lower pressing roller are alternately vacuumed, so that the aluminum foil is alternately adsorbed on both sides of the aluminum foil fold, and the reverse folding of the aluminum foil at the fold is achieved; The feeding mechanism comprises a feeding platform, an upper feeding roller and a lower feeding roller; wherein the feeding platform is arranged horizontally, and the front part is connected to the roller frame; the upper surface of the feeding platform has n feeding grooves from left to right; The upper feeding roller and the lower feeding roller are respectively located on the upper and lower sides of the feeding platform, and are connected with the roller frame to form a rotating pair, which is used to realize the forward transmission of the aluminum foil sent out through the feeding trough; n silicone rings are sleeved on the corresponding axial positions of the upper feeding roller and the lower feeding roller; the axial positions of the n silicone rings correspond to the positions of the n feeding troughs respectively; The folding storage mechanism is slidably connected to the guide rails arranged on the support platform in the front-to-back direction; the support platform is arranged horizontally, and the rear part is fixedly connected to the front part of the roller frame; the main body of the folding storage mechanism is provided with n rectangular cross-section channels along the front-to-back direction, and passive sliding blocking blocks are installed in the n channels; Furthermore, the rear end of the main body of the folding and storing mechanism is located at the two channels, and an L-shaped hook claw extending backward is designed on the upper and lower parts, and the bent parts of the two hook claws are opposite to each other; when the folding and storing mechanism moves backward to the aluminum foil folding and storing position, the bent parts of the upper and lower hook claws on the rear ends of the n channels in the folding and storing mechanism are respectively located in the grooves formed between the adjacent groups of protrusions in the upper and lower pressing rollers, and the bent parts of the two hook claws are respectively located at the upper and lower sides of the embossing position; when the upper and lower pressing rollers emboss the aluminum foil at the embossing position, the upper and lower pressing rollers are rolled and the air holes on the two rollers are alternately vacuumed, so that the aluminum foil is alternately adsorbed on the upper and lower pressing rollers during the forward transmission, and is brought into the space between the two hook claws by the rotation of the pressing roller, and further enters the channel through the entrance end of the channel, and cooperates with the blocking blocks in the channel, so that the aluminum foil is alternately folded clockwise and counterclockwise at the embossing position; during the folding process, the aluminum foil will push the blocking block forward to slide forward; after the folding is completed, the blocking block is taken out, and then the aluminum foil that has been preliminarily folded is taken out and transferred to the sorting and shaping mechanism for overall positioning; The accordion sheet finishing and shaping mechanism includes a compression chamber, a safety cover and a compression rod, which are fixedly installed as a whole at any position on the equipment frame; wherein, there is a cavity inside the compression chamber, and the cavity is used to place the aluminum foil that has been preliminarily folded; the cross-sectional size of the cavity is equal to the size of the aluminum foil after folding; the compression rod is a rectangular cross-sectional rod, one end of which is an extrusion end, which is arranged in the cavity, and the end face is perpendicular to the axial left and right side walls of the cavity; the compression rod is pushed by hand to slide along the cavity, and the preliminarily folded aluminum foil placed in the cavity is squeezed, so that the folded aluminum foil has a compact structure.

2. A device for realizing automatic folding of aluminum foil accordion sheets as claimed in claim 1, characterized in that: The two ends of the upper pressure roller are coaxially connected to the two connectors through bearings to form a rotating pair; further, the two connectors are respectively embedded in the grooves opened on the left and right side walls of the roller frame, and are slidably connected with the grooves to form a moving pair in the up and down directions; at the same time, a vertically arranged screw is installed on the roller frame, the top end of the screw is connected to the center position of the bottom surface of the connector, and the other end is designed to be a hexagon that cooperates with a wrench.

3. The device for realizing automatic folding of aluminum foil accordion sheets as claimed in claim 1, characterized in that: The two ends of the roller shaft of the upper feeding roller are connected to the two side walls of a U-shaped frame through bearings to form a rotating pair; two longitudinally arranged connecting rods are designed at the end of the U-shaped frame, and the two connecting rods pass through the openings on the crossbeam installed between the left and right side walls of the roller frame above the feeding platform and are connected to the limit blocks; at the same time, springs are sleeved on the two connecting rods and are located between the crossbeam and the U-shaped frame.

4. The device for realizing automatic folding of aluminum foil accordion sheets as claimed in claim 1, characterized in that: A baffle is installed above the feeding platform, and the baffle is arranged parallel to the feeding platform, and there is a gap between the two for aluminum foil to pass through; at the same time, an opening corresponding to the opening on the feeding platform is opened on the baffle, for the upper and lower feeding rollers to contact the silicone.

5. The device for realizing automatic folding of aluminum foil accordion sheets as claimed in claim 1, characterized in that: An insertion rod is designed laterally at the rear end of the main body of the folding and storing mechanism, and the channel is located between adjacent insertion rods; when the folding and storing mechanism moves backward to the extreme position, the insertion rod passes through the channels formed on both sides of each group of protrusions in the upper and lower pressure rollers after the protrusions are connected, so that an aluminum foil feeding channel is formed between two adjacent insertion rods.

6. The device for realizing automatic folding of aluminum foil accordion sheets as claimed in claim 1, characterized in that: A safety cover is slidably mounted on the top surface of the compression chamber to seal the top surface of the chamber.

7. The device for realizing automatic folding of aluminum foil accordion sheets as claimed in claim 1, characterized in that: Limit blocks and folding storage mechanism sensing devices are installed at the front and rear ends of the guide rail on the supporting platform; when the folding storage mechanism moves backward and reaches the folding storage position, the sensing device located at the front end of the guide rail will receive the storage mechanism position signal A, and the entire equipment enters the unlocked feeding state; when the folding storage mechanism of the receiving bin slides forward, leaves the aluminum foil storage position and reaches the rear end of the guide rail, the sensing device located at the rear end of the guide rail receives the storage mechanism position B signal, and the equipment enters the locked state.

8. The device for realizing automatic folding of aluminum foil accordion sheets as claimed in claim 1, characterized in that: The aluminum foil creasing mechanism performs embossing and folding in each process in the form of embossing-adsorption-desorption-folding, specifically: When the aluminum foil enters between the upper and lower pressing rollers, it continues to be transported forward by the upper and lower feeding rollers. At the same time, when the corresponding embossing protrusions and embossing recesses of the upper and lower pressing rollers reach the embossing position, the aluminum foil is embossed; an embossing protrusion on the lower pressing roller cooperates with the corresponding embossing recess on the upper pressing roller to perform the first embossing of the aluminum foil; when the first embossing of the aluminum foil is completed at the embossing position, the exhaust end of the upper vacuum air channel connected to a group of upper air holes close to the embossed recess reaches the position of the upper arc-shaped exhaust cavity and is connected to the upper arc-shaped exhaust cavity. A group of upper air holes close to the embossed recess exhaust air to adsorb the aluminum foil on the circumferential wall of the upper pressing roller; at this time, when the aluminum foil continues to be transported forward, the front end of the aluminum foil will enter the channel between the upper and lower hooks. At the same time, the upper pressing roller will absorb the aluminum foil at the position behind the first embossing, and move the aluminum foil toward the hook claw above the entrance end of the channel. When it moves to the bent part of the hook claw, the upper vacuum air channel exhaust end connected to a group of upper air holes near the embossed recess leaves the upper arc-shaped exhaust cavity and no longer absorbs the aluminum foil. At this time, the fold position of the aluminum foil is already in the channel; as the aluminum foil continues to be transported forward, the aluminum foil in the channel contacts the blocking block, is blocked by the blocking block, and automatically folds counterclockwise at the fold, and at the same time pushes the blocking block to move slightly forward along the channel; When the upper vacuum air duct exhaust end on the above-mentioned upper pressing roller leaves the upper arc-shaped exhaust cavity, the embossed protrusion on the upper pressing roller cooperates with the embossed recess on the lower pressing roller to perform the second embossing of the aluminum foil, and at the same time, the lower vacuum air duct exhaust end connected to a group of lower air holes close to the embossed recess reaches the position of the lower arc-shaped exhaust cavity, and is connected to the lower arc-shaped exhaust cavity to exhaust air, so that the rear position of the second embossing of the aluminum foil is adsorbed on the circumferential wall surface of the lower pressing roller; at this time, when the aluminum foil continues to be transmitted forward, the lower pressing roller moves with the aluminum foil toward the lower hook claw at the entrance end of the channel, and when it moves to pass the bent part of the lower hook claw, the lower vacuum air duct exhaust end connected to a group of lower air holes close to the embossed recess leaves the position of the lower arc-shaped exhaust cavity and no longer adsorbs the aluminum foil. At this time, the fold position of the aluminum foil is already in the channel; as the aluminum foil continues to be transported forward, the aluminum foil in the channel contacts the blocking block, is blocked by the blocking block, and automatically folds clockwise at the fold, and at the same time pushes the blocking block to move slightly forward along the channel; When the exhaust end of the lower vacuum air passage on the lower pressing roller leaves the lower arc-shaped exhaust cavity, the embossed protrusion on the lower pressing roller cooperates with the embossed recess on the upper pressing roller, and the above process is repeated for subsequent embossing pressing, and the aluminum foil is initially folded alternately clockwise or counterclockwise in the channel to form an accordion fold while ensuring that the aluminum foil can enter the channel after embossing. The embossing process of the first embossing of the aluminum foil is carried out in the same principle as the above process, in which an embossing protrusion on the upper embossing roller cooperates with an embossing recess on the corresponding lower embossing roller.

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