Angle punching device for hemming machine

Abstract

The present invention proposes a corner punching device for an edge wrapping machine, comprising a first wrapping base and a second span adjustment mechanism, wherein two first wrapping mechanisms are arranged on the second span adjustment mechanism; the first wrapping mechanism comprises a vertical plate, wherein a support slide rail is arranged on the vertical plate, and a positioning mechanism is also arranged on the vertical plate, and a pressure strip is also arranged on the vertical plate, which is driven to rise and fall by a lifting mechanism and is moved toward another vertical plate of the first wrapping device by a folding mechanism; a rounding device is arranged on the folding mechanism of the first wrapping mechanism, wherein the rounding device is provided with a rounded corner push plate, which is pushed toward the diagonal direction of the cover and approaches the surface of the paperboard after the cover and paperboard are fixed by the positioning mechanism during production, so as to press the cover corner position to wrap on the rounded corner surface of the paperboard, and the pressure strip of the first wrapping mechanism folds the edges of both sides of the cover in half and presses them on the paperboard after the cover is wrapped on the rounded corner of the paperboard during production. The present invention has the advantage of smooth and flat rounded corners.

Description

Technical Field

[0001] The invention relates to the field of cover machines, and in particular to a corner punching device for an edge binding machine. Background Art

[0002] The cover machine (edge ​​binding machine) is used to glue book covers. The existing book covers include covers and cardboard. When binding, two pieces of cardboard need to be placed on the cover, and a middle cardboard is placed between the two pieces of cardboard. Then the cover is fed into the machine to adhere the two sides of the cover to the cardboard, and then the other two sides of the cover are folded in half and adhered to the cardboard. However, the corners of the existing book covers are generally right angles, and because the book cover is covered with cardboard, it is relatively hard and easy to cause harm to children. Therefore, it is necessary to design a cover device suitable for binding cardboard with rounded corners. Summary of the invention

[0003] Based on the above problems, the object of the present invention is to provide a corner-making device for an edge hemming machine with rounded corners that are smooth and flat.

[0004] In view of the above problems, the following technical solutions are provided: a corner punching device of an edging machine, comprising a transfer device, an alignment device located below the transfer device and arranged in sequence along the conveying direction of the transfer device, a first covering device, and a second covering device; the alignment device comprises an alignment base and a first span adjustment mechanism arranged on the alignment base, the first span adjustment mechanism is provided with two alignment mechanisms which are arranged at intervals and the distance between them is adjustable; the first covering device comprises a first covering base and a second span adjustment mechanism arranged on the first covering base, the second span adjustment mechanism is provided with two first covering mechanisms which are arranged at intervals and the distance between them is adjustable; the second covering device comprises a second covering base and a third span adjustment mechanism arranged on the second covering base, the third span adjustment mechanism is provided with two second covering mechanisms which are arranged at intervals and the distance between them is adjustable; the alignment mechanism, the first covering mechanism, and the second covering mechanism all comprise a vertical plate, the vertical plate is provided with a supporting slide rail, and the supporting slide rail is used to The cover and paperboard are placed and supported during production, and a positioning mechanism is also provided on the vertical plate for pressing the edges of the cover and paperboard during production onto the supporting slide rail. The vertical plate is also provided with a pressure strip driven by the lifting mechanism to lift and lower and use the folding mechanism to approach the other vertical plate of the same alignment device or the first covering device or the second covering device; the pressure strip of the alignment mechanism folds up the edges of both sides of the cover and pushes to align the two sides of each paperboard on the cover with each other after the positioning mechanism lightly presses the cover and paperboard during production; the folding mechanism of the first covering mechanism is provided with a rounded corner device, and the rounded corner device is provided with a rounded corner push plate that pushes in the diagonal direction of the cover and approaches the surface of the paperboard after the positioning mechanism fixes the cover and paperboard during production, so as to press the corner position of the cover to cover the rounded corner surface of the paperboard; the pressure strip of the first covering mechanism folds the edges of both sides of the cover in half and presses them on the paperboard after the cover is covered on the rounded corner of the paperboard during production; the pressure strip of the second covering mechanism folds the other two edges of the cover in half and presses them on the paperboard after the positioning mechanism fixes the cover and paperboard during production.

[0005] In the above structure, the cardboard is coated with glue and placed on the cover and then placed on the supporting slide rail. The positioning mechanism on the alignment mechanism is used to pre-press and position the two sides of the cover and the cardboard to be aligned, and then the pressure strips of the alignment mechanism rise from the left and right sides of the cardboard to lift the outer edges of the two sides of the cover and squeeze them together to squeeze the cardboards on the cover together. Then the pressure strips are reset and the positioning mechanism releases the cover and the cardboard; the cover and the cardboard are sent to the supporting slide rail of the first covering mechanism together, and the positioning mechanism of the first covering mechanism fixes the two sides of the cover and the cardboard to be covered, and the rounding device drives the rounded corner push plate to descend and push it in the diagonal direction of the cover or the cardboard, and the corner position of the cover pre-coated with glue is covered and pressed on the rounded corner of the cardboard, and then the pressure strips of the first covering mechanism are brought together from both sides of the cover and pressed down to press the two sides of the cover pre-coated with glue on the cardboard to adhere and fix, so that the cover round The corners are adhered to the side of the cover, and then the rounded corner device is reset, and then the pressure strip is reset, and finally the positioning mechanism releases the cover and the cardboard; the cover and the cardboard are sent together to the supporting slide rail of the second covering mechanism, and the positioning mechanism of the second covering mechanism fixes the other two sides of the cover and the cardboard that are not covered, and the pressure strips of the second covering mechanism are brought close to each other from the other two sides of the cover and pressed down to press the other two sides of the cover that are pre-glued on the cardboard to adhere and fix, and then the pressure strip is reset, and finally the positioning mechanism releases the cover and the cardboard to complete the covering; it has the advantages of high production efficiency, rounded corner covering, good cardboard centering, and high mutual parallelism. Compared with the feeding mechanism of the existing assembly line, it can effectively correct the situation that the cardboard is misaligned due to transportation reasons when the feeding mechanism sends the cover and the cardboard for covering, which eventually leads to the defects that the cardboard is not parallel and tilted to each other after the cover covering is completed.

[0006] The present invention is further configured such that the first span adjustment mechanism, the second span adjustment mechanism and the third span adjustment mechanism each include two span slide rails which are respectively and parallelly arranged on the alignment base, the first covering base and the second covering base, and at least one span slide rail is provided with at least one pair of span sliders, and the span sliders of the two adjacent span slide rails on the alignment base, the first covering base and the second covering base are each provided with a bottom plate, and the vertical plates of the alignment mechanism, the first covering mechanism and the second covering mechanism are correspondingly fixed on the bottom plate, and a screw nut is provided on the bottom plate, and the screw nuts of the two bottom plates are connected by a double-headed screw, thereby controlling the two alignment mechanisms or the two first covering mechanisms or the two second covering mechanisms to approach or move away synchronously.

[0007] In the above structure, the first span adjustment mechanism and the second span adjustment mechanism are respectively used to adjust the spacing distance between the two alignment mechanisms and the two first covering mechanisms to cope with covers and cardboards of different widths; the third span adjustment mechanism is used to adjust the spacing distance between the two second covering mechanisms to cope with covers and cardboards of different total lengths.

[0008] The present invention is further configured such that the vertical plates of the alignment mechanism, the first covering mechanism and the second covering mechanism are all provided with fixed frames, the fixed frames are provided with cam shafts driven to rotate by servo motors, the cam shafts are provided with first cams for controlling the operation of positioning mechanisms of the alignment mechanism, the first covering mechanism and the second covering mechanism, second cams for controlling the operation of lifting mechanisms of the alignment mechanism, the first covering mechanism and the second covering mechanism, and third cams for controlling the operation of folding mechanisms of the alignment mechanism, the first covering mechanism and the second covering mechanism.

[0009] In the above structure, the positioning mechanisms of the alignment mechanism, the first covering mechanism and the second covering mechanism are controlled by the first cam to clamp and position the cover and paperboard; the second cam and the third cam cooperate to control the operation of the pressure strips of the alignment mechanism, the first covering mechanism and the second covering mechanism.

[0010] The present invention is further configured that the fixed frames of the alignment mechanism, the first covering mechanism and the second covering mechanism are all provided with a lever shaft, and the lever shaft is provided with a first lever, a second lever and a third lever; the positioning mechanisms of the alignment mechanism, the first covering mechanism and the second covering mechanism all include a fixed swing frame fixed to the vertical plate, the fixed swing frame is provided with a positioning swing shaft that can rotate relative to the fixed swing frame, the positioning swing shaft is provided with a first swing rod, the first swing rod is hinged to the first lever through a first connecting rod, the first lever is provided with a roller adapted to the first cam, the positioning swing shaft is provided with a positioning swing rod, and the positioning swing rod is provided with a pressing component for pressing the cover and paperboard during production onto the supporting slide rail by rotating the positioning swing shaft; the lifting mechanisms of the alignment mechanism, the first covering mechanism and the second covering mechanism include vertical slide rails fixed on both sides of the vertical plate, the vertical slide rails are provided with a vertical slider, the vertical slider is provided with a supporting plate, and also include a vertical swing shaft located on the fixed frame, the vertical swing shaft is provided with a second swing rod, the second swing rod is hinged to the first connecting rod through a first connecting rod, The cam is connected with the second cam by the second connecting rod, and the cam is connected with the second cam by the second connecting rod. The cam is connected with the second cam by the second connecting rod. The cam is connected with the second cam by the second connecting rod. The cam is connected with the second cam by the second connecting rod. The cam is connected with the second cam by the second connecting rod.

[0011] In the above structure, the clamping assembly of the alignment mechanism is provided with a plurality of rollers arranged in the length direction of the supporting slide rail, and when the cover and the cardboard are fixed, the rollers of the clamping assembly are pressed on the cardboard; the clamping assembly of the first covering mechanism is provided with a plurality of positioning rubber heads arranged in the length direction of the supporting slide rail, and when the cover and the cardboard are fixed, the positioning rubber heads of the clamping assembly of the first covering mechanism are pressed on the cardboard; the clamping assembly of the second covering mechanism is provided with a plurality of positioning pressure plates arranged in the length direction of the supporting slide rail, and when the cover and the cardboard are fixed, the positioning pressure plates of the clamping assembly of the second covering mechanism are pressed on the cardboard.

[0012] The present invention is further configured as follows: a fourth lever, a fifth lever and a sixth lever are further provided on the lever shaft, and a fourth cam, a fifth cam and a sixth cam are further provided on the camshaft; the fourth lever, the fifth lever and the sixth lever are all provided with rollers respectively adapted to the fourth cam, the fifth cam and the sixth cam, and the first lever, the second lever and the third lever are respectively provided with a first reset block, a second reset block and a third reset block; the fourth lever, driven by the fourth cam, abuts against the first reset block on the first lever to achieve reset of the first lever; the fifth lever, driven by the fifth cam, abuts against the second reset block on the second lever to achieve reset of the second lever; the sixth lever, driven by the sixth cam, abuts against the third reset block on the third lever to achieve reset of the third lever.

[0013] In the above structure, the fourth cam, the fifth cam and the sixth cam can be used to control the fourth lever, the fifth lever and the sixth lever, so that the first lever, the second lever and the third lever can be reset in time during operation.

[0014] The present invention is further configured such that a fillet spacing adjustment slide rail is provided on the connecting plate of the first covering mechanism, a spacing adjustment slider is provided on the fillet spacing adjustment slide rail, a spacing adjustment plate is provided on the spacing adjustment slider, two spacing adjustment plates are provided on the same connecting plate of the first covering mechanism, and can slide relatively far away or close to each other, and the filleting device is located on a single spacing adjustment plate.

[0015] In the above structure, two rounded corner devices are arranged on the same rounded corner spacing adjustment slide rail, which can control the spacing between the rounded corners on the same side of the paperboard through adjustment to adapt to different cover sizes.

[0016] The present invention is further configured such that spacing adjustment handwheels are provided at both ends of the connecting plate of the first covering mechanism, an adjusting screw is provided between the two spacing adjustment handwheels, and the adjusting screw is linked to the spacing adjustment handwheel through a gear; the spacing adjustment plate is provided with a spacing adjustment nut which cooperates with the adjusting screw thread to control the two spacing adjustment plates to move closer or farther away from each other when the adjusting screw rotates.

[0017] In the above structure, the threads at both ends of the adjusting screw rod rotate in opposite directions, thereby achieving the distance adjustment nuts to move closer to or farther away from each other.

[0018] The present invention is further configured such that the corner rounding device includes an oblique slide rail fixed to a spacing adjustment plate and arranged in the horizontal diagonal direction of the cover or paperboard during production, the oblique slide rail is provided with an oblique slider, the spacing adjustment plate is provided with an oblique push cylinder for pushing the oblique slider to slide; the oblique slide rail is provided with an oblique push vertical slide rail, the oblique push vertical slide rail is provided with a main oblique push vertical slide rail and a secondary oblique push vertical slide rail, the main oblique push vertical slide rail is provided with a slide rail frame, the slide rail frame is provided with a tension spring for pulling the main oblique push vertical slide downward and a reset cylinder for pushing the main oblique push vertical slide upward, and the slide rail frame is provided with a pull ... A clamping roller is also provided, and the spacing adjustment plate is provided with a plate-shaped cam adapted to the clamping roller, which gradually lowers its height when the oblique slider slides in the horizontal diagonal direction of the cover or cardboard during production to achieve rounded corners; the rounded corner push plate is fixed on the auxiliary oblique push vertical slider, and the auxiliary oblique push vertical slider is provided with a pre-stressing support frame, and the slider frame is provided with a thickness adjustment rod that is threadedly matched with it, and the lower end of the thickness adjustment rod passes through the pre-stressing support frame and is provided with an anti-drop cap, and the thickness adjustment rod is in sliding cooperation with the pre-stressing support frame, and the thickness adjustment rod is provided with a pre-stressing spring, and the two ends of the pre-stressing spring are respectively supported on the slider frame and the pre-stressing support frame.

[0019] In the above structure, when the cover and the paperboard are placed on the supporting slide rail of the first covering mechanism, the cover and the paperboard are fixed by the positioning mechanism of the first covering mechanism, and then the reset cylinder is reset, so that the tension spring pulls the main oblique vertical slider to move downward, causing the clamping roller to abut against the plate-shaped cam. At this time, the pressure strips of the first covering mechanism begin to approach each other and move downward. Before the pressure strips fold the two sides of the cover and squeeze them to adhere to the paperboard, the oblique cylinder drives the rounded corner push plate to slide in the diagonal direction of the paperboard. At the same time, the clamping roller reaches the concave contour position of the plate-shaped cam, causing the clamping roller to lose support, causing the tension spring to further The main oblique vertical slider is pulled downward step by step, and the auxiliary oblique vertical slider is pushed down synchronously under the support of the pre-load spring, so that the lower end of the rounded corner push plate slides toward the diagonal direction of the cardboard and gradually approaches the upper surface of the cardboard and presses the cover on the cardboard. The pressure strip moves downward to fold the side edges of the cover in half and adhere them to the cardboard. In order to ensure the pressing force, the components located on the entire connecting plate will follow the pressure strip when the pressure strip is pressed. At this time, the auxiliary oblique vertical slider will slide in the opposite direction to compress the pre-load spring when the pressure strip is further pressed down because the lower end of the rounded corner push plate is against the cardboard, so as to prevent the rounded corner push plate from scratching the cardboard due to excessive downward pressure.

[0020] The present invention is further configured such that a feeding mechanism is also provided on the alignment device; and a discharging mechanism is provided on the second coating device.

[0021] In the above structure, a conveyor belt is provided on the feeding mechanism, and the upper annular surface of the conveyor belt is located on the supporting slide rail of the alignment mechanism. Before the cover and the cardboard are fed in, the roller is pressed on the conveyor belt. When the cover and the cardboard are fed in, the cover and the cardboard are transported between the conveyor belt and the roller; a discharging belt is provided on the discharging mechanism, and the discharging belt is located on the supporting slide rail of the second covering mechanism.

[0022] The present invention is further configured as follows: the transfer device includes machine walls located on both sides of the alignment device, the first covering device and the second covering device, the machine wall is provided with a transfer vertical slide rail, the transfer vertical slide rail is provided with a vertical slide plate, the machine wall is provided with a crank driven to rotate by a motor, the crank is provided with a rocker hinged with the vertical slide plate, so as to control the lifting and lowering of the vertical slide plate when the crank rotates; the vertical slide plate is provided with a transfer slide rail, the rotating slide rail is provided with a transfer slider, the transfer slider is provided with a transfer slide, and the transfer slide plate between adjacent side walls is connected by a cross bar, and the cross bar is provided with two groups of adsorption devices arranged in the length direction of the transfer slide rail; the vertical slide plate is provided with a pulley group driven by a motor, and the synchronous belt of the pulley group is connected to the transfer slide plate by a synchronous belt fixing buckle, so as to transfer the cover and cardboard during production between the alignment device and the first covering device and between the first covering device and the second covering device through the synchronous belt.

[0023] In the above structure, the pulley groups on the vertical slides on both sides are driven by a synchronous belt system connected to the two pulley groups through a motor and power. The synchronous belt system is provided with a sliding shaft. The sliding shaft realizes the lifting and lowering of the pulleys of the pulley group on the sliding shaft while transmitting torque. The transfer device transfers the cover and the cardboard through a suction cup. Its structure has the advantages of good rigidity and precise positioning.

[0024] The beneficial effects of the present invention are as follows: the cardboard coated with glue is placed on the cover and then placed on the supporting slide rail, the positioning mechanism on the alignment mechanism is used to pre-press and position the two sides of the cover and the cardboard to be aligned, and then the pressure strips of the alignment mechanism rise from the left and right sides of the cardboard to lift the outer edges of the two sides of the cover and squeeze them together, so that the cardboards on the cover are squeezed and aligned with each other, and then the pressure strips are reset and the positioning mechanism releases the cover and the cardboard; the cover and the cardboard are sent to the supporting slide rail of the first covering mechanism together, the positioning mechanism of the first covering mechanism fixes the two sides of the cover and the cardboard to be covered, the rounded corner device drives the rounded corner push plate to descend and push it in the diagonal direction of the cover or the cardboard, and the corner position of the cover pre-coated with glue is covered and pressed on the rounded corner of the cardboard, and then the pressure strips of the first covering mechanism are brought together from the two sides of the cover and pressed down to press the two sides of the cover pre-coated with glue on the cardboard to adhere and fix, so as to seal the cover. The rounded corners are adhered to the side of the cover, and then the rounded corner device is reset, and then the pressure strip is reset, and finally the positioning mechanism releases the cover and the cardboard; the cover and the cardboard are sent together to the supporting slide rail of the second covering mechanism, and the positioning mechanism of the second covering mechanism fixes the other two sides of the cover and the cardboard that are not covered, and the pressure strips of the second covering mechanism are brought close to each other from the other two sides of the cover and pressed down to press the other two sides of the cover that are pre-glued on the cardboard to adhere and fix, and then the pressure strip is reset, and finally the positioning mechanism releases the cover and the cardboard to complete the covering; it has the advantages of high production efficiency, rounded corner covering, good cardboard centering, and high mutual parallelism. Compared with the feeding mechanism of the existing assembly line, it can effectively correct the situation that the cardboard is misaligned due to transportation when the feeding mechanism sends the cover and the cardboard for covering, which eventually leads to the defects that the cardboard is not parallel and tilted to each other after the cover covering is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall assembly structure of the whole machine of the present invention.

[0026] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 3 It is a schematic diagram of the local explosion structure of the present invention.

[0028] Figure 4 It is a schematic diagram of the explosion structure of the whole machine of the present invention.

[0029] Figure 5 It is a schematic diagram of the overall structure of the alignment device of the present invention.

[0030] Figure 6 It is a schematic structural diagram of the feeding mechanism and the first span adjustment mechanism of the present invention.

[0031] Figure 7 It is a schematic diagram of the alignment mechanism structure of the present invention.

[0032] Figure 8It is a schematic structural diagram of the positioning mechanism of the alignment mechanism of the present invention from a first viewing angle.

[0033] Fig. 9 It is a schematic structural diagram of the positioning mechanism of the alignment mechanism of the present invention from a second viewing angle.

[0034] Fig.10 It is a schematic structural diagram of the positioning mechanism of the alignment mechanism of the present invention from a third viewing angle.

[0035] Fig.11 It is a schematic structural diagram of the lifting mechanism of the alignment mechanism of the present invention from a first viewing angle.

[0036] Fig.12 It is a schematic structural diagram of the lifting mechanism of the alignment mechanism of the present invention from a second viewing angle.

[0037] Fig.13 It is a schematic structural diagram of the folding mechanism of the alignment mechanism of the present invention from a first viewing angle.

[0038] Fig.14 It is a schematic structural diagram of the folding mechanism of the alignment mechanism of the present invention from a second viewing angle.

[0039] Fig.15 It is a schematic diagram of the overall structure of the first coating device of the present invention.

[0040] Fig.16 It is a schematic diagram of the structure of the second span adjustment mechanism of the present invention.

[0041] Fig.17 It is a schematic structural diagram of the first covering mechanism of the present invention.

[0042] Fig.18 It is a schematic diagram of the structure of the single-sided first covering mechanism of the present invention.

[0043] Fig.19 It is a schematic structural diagram of the first viewing angle of the positioning mechanism of the first covering mechanism of the present invention.

[0044] Fig. 20 It is a schematic structural diagram of the positioning mechanism of the first covering mechanism of the present invention from a second viewing angle.

[0045] Fig.21 It is a schematic structural diagram of the positioning mechanism of the first covering mechanism of the present invention from a third viewing angle.

[0046] Fig. 22 It is a schematic structural diagram of the lifting mechanism of the first covering mechanism of the present invention from a first viewing angle.

[0047] Fig.23 It is a schematic structural diagram of the lifting mechanism of the first covering mechanism of the present invention from a second viewing angle.

[0048] Fig.24It is a schematic structural diagram of the folding mechanism of the first covering mechanism of the present invention from a first viewing angle.

[0049] Fig.25 It is a schematic structural diagram of the folding mechanism of the first covering mechanism of the present invention from a second viewing angle.

[0050] Fig.26 It is a schematic structural diagram of the folding mechanism of the first covering mechanism of the present invention from a third viewing angle.

[0051] Fig. 27 It is a schematic diagram of the overall structure of the single-sided rounded corner device of the present invention from a first viewing angle.

[0052] Fig.28 It is a schematic diagram of the overall structure of the single-sided rounded corner device of the present invention from a second viewing angle.

[0053] Fig.29 This is a schematic structural diagram of the single-sided rounded corner device of the present invention from the first viewing angle.

[0054] Fig.30 This is a schematic structural diagram of the single-sided rounded corner device of the present invention from a second viewing angle.

[0055] Fig.31 It is a schematic structural diagram of the rounded corner device of the present invention from an exploded first perspective.

[0056] Fig.32 It is a schematic structural diagram of the rounded corner device of the present invention when exploded from the second viewing angle.

[0057] Fig.33 It is a schematic structural diagram of the rounded corner device of the present invention from the first viewing angle.

[0058] Fig.34 This is a schematic structural diagram of the corner rounding device of the present invention from a second viewing angle.

[0059] Fig.35 It is a schematic structural diagram of the corner rounding device of the present invention from the third viewing angle.

[0060] Fig.36 It is a schematic diagram of the overall structure of the second coating device of the present invention.

[0061] Fig.37 It is a schematic structural diagram of the discharging mechanism and the third span adjusting mechanism of the present invention.

[0062] Fig.38 It is a schematic diagram of the structure of the second covering mechanism of the present invention.

[0063] Fig.39 It is a schematic diagram of the structure of the single-sided second covering mechanism of the present invention.

[0064] Fig.40It is a schematic structural diagram of the first viewing angle of the positioning mechanism of the second covering mechanism of the present invention.

[0065] Fig.41 It is a schematic structural diagram of the positioning mechanism of the second covering mechanism of the present invention from a second viewing angle.

[0066] Fig.42 It is a schematic structural diagram of the positioning mechanism of the second covering mechanism of the present invention from a third viewing angle.

[0067] Fig.43 It is a schematic structural diagram of the lifting mechanism of the second covering mechanism of the present invention from a first viewing angle.

[0068] Fig.44 It is a schematic structural diagram of the lifting mechanism of the second covering mechanism of the present invention from a second viewing angle.

[0069] Fig.45 It is a schematic structural diagram of the folding mechanism of the second covering mechanism of the present invention from a first viewing angle.

[0070] Fig.46 It is a schematic structural diagram of the folding mechanism of the second covering mechanism of the present invention from a second viewing angle.

[0071] Fig.47 It is a schematic structural diagram of the folding mechanism of the second covering mechanism of the present invention from a third viewing angle.

[0072] Fig.48 It is a schematic diagram of the structure of the transfer device of the present invention.

[0073] Fig.49 It is a schematic diagram of the cover and paperboard structure of the present invention.

[0074] Fig.50 It is a schematic structural diagram of the paperboards of the present invention after being aligned on the alignment device.

[0075] Fig.51 It is a schematic structural diagram of the cover and paperboard of the present invention after being rounded on the first covering device.

[0076] Fig.52 It is a schematic structural diagram of the cover and paperboard of the present invention after the two side edges thereof are wrapped by the first wrapping device.

[0077] Meanings of the numbers in the figure: 1-transfer device; 2-alignment device; 3-first covering device; 4-second covering device; 5-alignment base; 6-first span adjustment mechanism; 7-first covering base; 8-second span adjustment mechanism; 9-second covering base; 10-third span adjustment mechanism; 11′, 11″, 11^-span slide rail; 111′, 111″, 111^-span slider; 12′, 12″, 12^-bottom plate; 13′, 13″, 13^-screw nut; 14′, 14″, 14^-double-headed screw; 20-alignment mechanism; 21-first covering mechanism; 211-rounded corner spacing adjustment slide rail; 212-spacing adjustment slider; 213-spacing adjustment plate; 2131-spacing adjustment nut ; 214- spacing adjustment hand wheel; 2141- adjusting screw rod; 2142- gear; 22- second covering mechanism; 23', 23", 23^- vertical plate; 231', 231", 231^- fixed frame; 232', 232", 232^- camshaft; 2321', 2321", 2321^- first cam; 2322', 2322", 2322^- second cam; 2323', 2323", 2323^- third cam; 2324', 2324", 2324^- fourth cam; 2325', 2325", 2325^- fifth cam; 2326', 2326", 2326^- sixth cam; 233', 233", 233^- lever axle; 2331′, 2331″, 2331^-first lever; 23311′, 23311″, 23311^-first reset block; 2332′, 2332″, 2332^-second lever; 23321′, 23321″, 23321^-second reset block; 2333′, 2333″, 2333^-third lever; 23331′, 23331″, 23331^-third reset block; 2334′, 2334″, 2334^-fourth lever; 2335′, 2335″, 2335^-fifth lever; 2336′, 2336″, 2336^-sixth lever; 234′, 234″, 234^-fixed swing frame; 2341′, 2 341〞, 2341^-positioning swing shaft; 2342′, 2342〞, 2342^-first swing rod; 2343′, 2343〞, 2343^-first connecting rod; 2344′, 2344〞, 2344^-positioning swing rod; 2345′, 2345〞, 2345^-pressing assembly; 23451-roller; 23451〞-positioning rubber head, 23451^-positioning pressure plate; 235′, 235〞, 235^-vertical slide rail; 2351′, 2351〞, 2351^-vertical slider; 2352′, 2352〞, 2352^-supporting plate; 236′, 236〞, 236^-vertical swing shaft; 2361′, 2361〞, 2361^-second swing rod;2362′, 2362″, 2362^-second connecting rod; 2363′, 2363″, 2363^-vertical swing rod; 2364′, 2364″, 2364^-torsion connecting rod; 237′, 237″, 237^-lateral swing axis; 2371′, 2371″, 2371^-third swing rod; 2372′, 2372″, 2372^-third connecting rod; 2373′, 2373″, 2373^-lateral swing rod; 23731′, 23731″, 23731^ - transverse roller; 24′, 24″, 24^- supporting rail; 25′, 25″, 25^- positioning mechanism; 26′, 26″, 26^- lifting mechanism; 27′, 27″, 27^- folding mechanism; 271′, 271″, 271^- transverse rail; 272′, 272″, 272^- transverse slider; 273′, 273″, 273^- connecting plate; 274′, 274″, 274^- transverse push block; 2741′, 2741″, 2741^- waist-shaped hole; 28′ , 28〞, 28^-pressing strip; 30-rounding device; 31-rounding push plate; 32-oblique slide rail; 321-oblique slider; 322-oblique push cylinder; 33-push vertical slide rail; 331-main oblique push vertical slider; 3311-slider frame; 3312-tension spring; 3313-reset cylinder; 3314-pressing roller; 3315-thickness adjustment rod; 33151-anti-drop cap; 33152-preload spring; 332-secondary oblique push vertical slider; 3321-preload support frame; 34-plate cam; 34 1-concave profile; 40-feeding mechanism; 41-conveyor belt; 50-discharging mechanism; 51-discharging belt; 60-machine wall; 61-transfer vertical slide rail; 62-vertical slide plate; 621-transfer slide rail; 622-transfer slide block; 623-transfer slide frame; 624-cross bar; 63-crank; 64-rocker; 65-adsorption device; 66-pulley group; 661-synchronous belt; 662-synchronous belt fixing buckle; 663-pulley; 67-synchronous belt system; 671-sliding shaft; 68-suction cup; a-cover; b-cardboard. ; DETAILED DESCRIPTION

[0078] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0079] refer to Figures 1 to 52 ,like Figures 1 to 52The corner punching device of an edge hemming machine shown in the figure comprises a transfer device 1, an alignment device 2 located below the transfer device 1 and arranged in sequence along the conveying direction of the transfer device 1, a first covering device 3, and a second covering device 4; the alignment device 2 comprises an alignment base 5 and a first span adjustment mechanism 6 arranged on the alignment base 5, and the first span adjustment mechanism 6 is provided with two alignment mechanisms 20 arranged at intervals and with adjustable distances from each other; the first covering device 3 comprises a first covering base 7 and a second span adjustment mechanism 8 arranged on the first covering base 7, and the second span adjustment mechanism 8 is provided with two first covering mechanisms 21 arranged at intervals and with adjustable distances from each other; The second covering device 4 includes a second covering base 9 and a third span adjustment mechanism 10 arranged on the second covering base 9, and the third span adjustment mechanism 10 is provided with two second covering mechanisms 22 arranged at intervals and with adjustable distances between each other; the alignment mechanism 20, the first covering mechanism 21, and the second covering mechanism 22 respectively include vertical plates 23', 23", and 23^, and the vertical plates 23', 23", and 23^ are respectively provided with support slide rails 24', 24", and 24^, and the support slide rails 24', 24", and 24^ are used to place and support the cover a and the paperboard b during production, and the vertical plates 23', 23", and 23^ are also provided with a cover for placing the cover a and the paperboard b during production. The edges of the cover a and the paperboard b are pressed tightly against the positioning mechanisms 25', 25", 25^ on the supporting slide rails 24', 24", 24^. The vertical plates 23', 23", 23^ are also provided with press strips 28', 28", 28^ which are driven to rise and fall by the lifting mechanisms 26', 26", 26^ and are brought closer to another vertical plate 23', 23", 23^ of the same alignment device 2 or the first covering device 3 or the second covering device 4 by the folding mechanisms 27', 27", 27^. The press strips 28' of the alignment mechanism 20 fold up the edges of the cover a and the paperboard b during production after the positioning mechanism 25' lightly presses the cover a and the paperboard b, and push the two sides of the cover a so that the two sides of the paperboards b on the cover a are aligned with each other. The first covering mechanism 21 has a folding mechanism 27″ provided with a rounded corner device 30, and the rounded corner device 30 is provided with a rounded corner push plate 31 which pushes the cover a in the diagonal direction and approaches the surface of the cardboard b after the positioning mechanism 25″ fixes the cover a and the cardboard b during production, so as to press the corner of the cover a to be covered on the rounded corner surface of the cardboard b. The first covering mechanism 21 has a pressure strip 28″ which folds the two side edges of the cover a in half and presses them on the cardboard b after the cover a is covered on the rounded corner of the cardboard b during production; the second covering mechanism 22 has a pressure strip 28^ which folds the other two side edges of the cover a in half and presses them on the cardboard b after the positioning mechanism 25^ fixes the cover a and the cardboard b during production.

[0080] In the above structure, the paperboard b is coated with glue and placed on the cover a, and then placed on the support slide rail 24', and the positioning mechanism 25' on the alignment mechanism 20 is used to pre-press and position the two sides of the cover a and the paperboard b to be aligned, and then the pressure strips 28' of the alignment mechanism 20 rise from the left and right sides of the paperboard b to lift the outer edges of the two sides of the cover a and press them together, so that the paperboards b on the cover a are pressed and aligned with each other, and then the pressure strips 28' are reset and the positioning mechanism 25' releases the cover a and the paperboard b; the cover a and the paperboard b are aligned. The cover a and the paperboard b are fixed on the supporting rail 24" of the first covering mechanism 21. The positioning mechanism 25" of the first covering mechanism 21 fixes the two sides of the cover a and the paperboard b to be covered. The rounded corner device 30 drives the rounded corner push plate 31 to descend and push it in the diagonal direction of the cover a or the paperboard b, so that the pre-glued corner of the cover a is covered and pressed on the rounded corner of the paperboard b. Then, the pressure strips 28" of the first covering mechanism 21 move from the two sides of the cover a together and press down to press the two sides of the cover a pre-glued on the paperboard b to adhere and fix them. The rounded corners of cover a are adhered to the side of cover a, and then the rounded corner device 30 is reset, and then the pressure strip 28" is reset, and finally the positioning mechanism 25" releases the cover a and the paperboard b; the cover a and the paperboard b are sent to the supporting slide rail 24^ of the second covering mechanism 22, and the positioning mechanism 25^ of the second covering mechanism 22 fixes the other two sides of the cover a and the paperboard b that are not covered, and the pressure strip 28^ of the second covering mechanism 22 moves from the other two sides of the cover a to each other and presses down to make the other two sides of the cover a pre-glued It is pressed on the cardboard b to adhere and fix it, and then the pressure strip 28^ is reset, and finally the positioning mechanism 25^ releases the cover a and the cardboard b to complete the covering; it has the advantages of high production efficiency, smooth rounded corner covering, good centering of the cardboard b, and high mutual parallelism. Compared with the feeding mechanism 40 of the existing assembly line, it can effectively correct the situation that the cardboard b is misaligned with each other due to transportation reasons when the feeding mechanism 40 feeds the cover a and the cardboard b for covering, which eventually leads to the defect that the cardboards b are not parallel and tilted to each other after the cover a is covered.

[0081] In this embodiment, the first span adjustment mechanism 6, the second span adjustment mechanism 8 and the third span adjustment mechanism 10 all include two span slide rails 11′, 11″, 11^ which are respectively and parallelly arranged on the alignment base 5, the first covering base 7 and the second covering base 9, and one span slide rail 11′, 11″, 11^ is provided with at least one pair of span sliders 111′, 111″, 111^, and the span sliders 111′, 111″, 111^ of the two adjacent span slide rails 11′, 11″, 11^ on the alignment base 5, the first covering base 7 and the second covering base 9 are respectively and parallelly arranged on the alignment base 5, the first covering base 7 and the second covering base 9. Base plates 12′, 12″, 12^ are separately provided, and vertical plates 23′, 23″, 23^ of the alignment mechanism 20, the first covering mechanism 21 and the second covering mechanism 22 are fixed on the base plates 12′, 12″, 12^ accordingly. Screw nuts 13′, 13″, 13^ are provided on the base plates 12′, 12″, 12^, and the screw nuts 13′, 13″, 13^ of the two base plates 12′, 12″, 12^ are connected by double-headed screws 14′, 14″, 14^, so as to control the two alignment mechanisms 20 or the two first covering mechanisms 21 or the two second covering mechanisms 22 to approach or move away synchronously.

[0082] In the above structure, the first span adjustment mechanism 6 and the second span adjustment mechanism 8 are respectively used to adjust the spacing distance between the two alignment mechanisms 20 and the two first covering mechanisms 21 to cope with covers a and cardboards b of different widths; the third span adjustment mechanism 10 is used to adjust the spacing distance between the two second covering mechanisms 22 to cope with covers a and cardboards b of different total lengths.

[0083] In this embodiment, the vertical plates 23′, 23″, 23^ of the alignment mechanism 20, the first covering mechanism 21, and the second covering mechanism 22 are respectively provided with fixed frames 231′, 231″, 231^, and the fixed frames 231′, 231″, 231^ are provided with cam shafts 232′, 232″, 232^ driven to rotate by a servo motor, and the cam shafts 232′, 232″, 232^ are provided with positioning mechanisms for controlling the alignment mechanism 20, the first covering mechanism 21, and the second covering mechanism 22. The first cams 2321′, 2321″, 2321^ for controlling the operation of the lifting mechanisms 26′, 26″, 26^ of the alignment mechanism 20, the first covering mechanism 21 and the second covering mechanism 22, the second cams 2322′, 2322″, 2322^ for controlling the operation of the lifting mechanisms 26′, 26″, 26^ of the alignment mechanism 20, the first covering mechanism 21 and the second covering mechanism 22, and the third cams 2323′, 2323″, 2323^ for controlling the operation of the folding mechanisms 27′, 27″, 27^ of the alignment mechanism 20, the first covering mechanism 21 and the second covering mechanism 22.

[0084] In the above structure, the positioning mechanisms 25′, 25″, 25^ of the alignment mechanism 20, the first covering mechanism 21 and the second covering mechanism 22 are controlled by the first cam 2321′, 2321″, 2321^ to clamp and position the cover a and the cardboard b; the second cam 2322′, 2322″, 2322^ and the third cam 2323′, 2323″, 2323^ cooperate to control the operation of the pressure strips 28′, 28″, 28^ of the alignment mechanism 20, the first covering mechanism 21 and the second covering mechanism 22.

[0085] In this embodiment, the fixing frames 231′, 231″, 231^ of the alignment mechanism 20, the first covering mechanism 21, and the second covering mechanism 22 are respectively provided with lever shafts 233′, 233″, 233^, and the lever shafts 233′, 233″, 233^ are respectively provided with first levers 2331′, 2331″, 2331^, second levers 2332′, 2332″, 2332^, and third levers 2333′, 2333″, 2333^; The positioning mechanisms 25′, 25″, 25^ of the alignment mechanism 20, the first covering mechanism 21, and the second covering mechanism 22 respectively include fixed swing frames 234′, 234″, 234^ fixed on the vertical plates 23′, 23″, 23^, and the fixed swing frames 234′, 234″, 234^ are provided with positioning swing shafts 2341′, 2341″, 2341^ which can rotate relative to the fixed swing frames 234′, 234″, 234^. The first swing rods 2342′, 2342″, 2342^ are respectively provided on the first swing rods 2342′, 2342″, 2342^, and the first swing rods 2342′, 2342″, 2342^ are respectively hinged to the corresponding first shifting rods 2331′, 2331″, 2331^ through the first connecting rods 2343′, 2343″, 2343^, and the first shifting rods 2331′, 2331″, 2331^ are respectively provided with rollers adapted to the first cams 2321′, 2321″, 2321^. The positioning swing shafts 2341′, 2341″, 2341^ are respectively provided with positioning swing rods 2344′, 2344″, 2344^, and the positioning swing rods 2344′, 2344″, 2344^ are provided with pressing components 2345′, 2345″, 2345^ for pressing the cover a and paperboard b during production onto the supporting slide rails 24′, 24″, 24^ of the corresponding mechanism through the rotation of the positioning swing shafts 2341′, 2341″, 2341^;The lifting mechanisms 26′, 26″, 26^ of the alignment mechanism 20, the first covering mechanism 21 and the second covering mechanism 22 include vertical slide rails 235′, 235″, 235^ respectively fixed to both sides of the vertical plates 23′, 23″, 23^, and vertical sliders 2351′, 2351″, 2351^ are provided on the vertical slide rails 235′, 235″, 235^. The support plates 2352', 2352", 2352^ are arranged on the fixing frame 231', 231", 231^, and the vertical swing shafts 236', 236", 236^ are respectively arranged on the fixing frame 231', 231", 231^, and the second swing rods 2361', 2361", 2361^ are respectively arranged on the vertical swing shafts 236', 236", 236^, and the second swing rods 2361', 2361", 2361^ are respectively connected by second The rods 2362', 2362", 2362^ are hinged with the second levers 2332', 2332", 2332^, and the second levers 2332', 2332", 2332^ are provided with rollers adapted to the second cams 2322', 2322", 2322^. The two ends of the vertical swing shafts 236', 236", 236^ are respectively provided with vertical swing rods 2363', 2363", 2363^. The vertical swing rods 2363′, 2363″, 2363^ are hinged to the vertical sliders 2351′, 2351″, 2351^ through the torsion links 2364′, 2364″, 2364^, so that the torsion links 2364′, 2364″, 2364^ are pulled by the swing of the vertical swing rods 2363′, 2363″, 2363^ to realize the lifting and lowering control of the vertical sliders 2351′, 2351″, 2351^;The folding mechanisms 27′, 27″, 27^ of the alignment mechanism 20, the first covering mechanism 21 and the second covering mechanism 22 respectively include transverse slide rails 271′, 271″, 271^ fixed on the supporting plates 2352′, 2352″, 2352^, and the transverse slide rails 271′, 271″, 271^ are provided with transverse sliders 272′, 272″, 272^, and the transverse sliders 272′, 272″, 272^ are provided with transverse sliders 272′, 272″, 272^ on both sides of the vertical plates 23′, 23″, 23^, respectively. 2", 272^ connecting plates 273', 273", 273^, the pressure strips 28', 28", 28^ are located on one side of each connecting plate 273', 273", 273^ facing the other vertical plate 23', 23", 23^ of the same device, and the connecting plates 273', 273", 273^ are also provided with horizontal push blocks 274', 274", 274^, and the horizontal push blocks 274', 274", 274^ are provided with waist-shaped holes 2741', 2741", 2741^, and the fixing frames 231', 2 231", 231^ are further provided with transverse swing shafts 237', 237", 237^, and third swing rods 2371', 2371", 2371^ are provided on the transverse swing shafts 237', 237", 237^, and the third swing rods 2371', 2371", 2371^ are hinged to the third levers 2333', 2333", 2333^ through third connecting rods 2372', 2372", 2372^, and the third levers 2333', 2333", 2333^ are provided with third cams 2323', 2323', 2323'. The lateral swing shafts 237′, 237″, 237^ are further provided with lateral swing rods 2373′, 2373″, 2373^, and the lateral swing rods 2373′, 2373″, 2373^ are provided with lateral rollers 23731′, 23731″, 23731^ adapted to the waist-shaped holes 2741′, 2741″, 2741^ and push the lateral sliders 272′, 272″, 272^ to slide when the lateral swing rods 2373′, 2373″, 2373^ swing. ;

[0086] In the above structure, the clamping component 2345′ of the alignment mechanism 20 is provided with a plurality of rollers 23451 arranged in the length direction of the supporting slide rail 24′, and when the clamping component 2345′ is fixing the cover a and the cardboard b, the rollers 23451 of the clamping component 2345′ are pressed on the cardboard b; the clamping component 2345″ of the first covering mechanism 21 is provided with a plurality of positioning rubber heads 23451″ arranged in the length direction of the supporting slide rail 24″, and when the clamping component 2345″ of the first covering mechanism 21 is fixing the cover a and the cardboard b, the positioning rubber head 23451″ of the first covering mechanism 21 is pressed on the cardboard b; the clamping component 2345^ of the second covering mechanism 22 is provided with a plurality of positioning rubber heads 23451^ arranged in the length direction of the supporting slide rail 24^, and when the clamping component 2345^ of the second covering mechanism 22 is fixing the cover a and the cardboard b, the positioning rubber head 23451^ of the second covering mechanism 22 is pressed on the cardboard b.

[0087] In this embodiment, the lever shafts 233′, 233″, 233^ are further provided with fourth levers 2334′, 2334″, 2334^, fifth levers 2335′, 2335″, 2335^ and sixth levers 2336′, 2336″, 2336^; the cam shafts 232′, 232″, 232^ are further provided with fourth cams 2324′, 2324″, 2324^, fifth cams 2325′, 2325″, 2325^ and sixth cams 2326′, 2326″, 2326^; the fourth levers 2334′, 2334″, 2334^, fifth levers 2335′, 2335″, 2335^ and sixth levers 2336′, 2336″, 2336^ The first lever 2331′, 2331″, 2331^, the second lever 2332′, 2332″, 2332^ and the third lever 2333′, 2333″, 2333^ are provided with first reset blocks 23311′, 23311″, 23311^, the first lever 2331′, 2331″, 2331^ and the third lever 2333′, 2333″, 2333^ are provided with first reset blocks 23311′, 23311″, 23311^, the first lever 2331′, 2331″, 2331^ and the sixth ...1^ and The first lever 2331′, 2331″, 2331^ is reset by the first reset block 23321′, 23321″, 23321^ and the third reset block 23331′, 23331″, 23331^; the fourth lever 2334′, 2334″, 2334^, driven by the fourth cam 2324′, 2324″, 2324^, counteracts the first reset block 23311′, 23311″, 23311^ on the first lever 2331′, 2331″, 2331^ to reset the first lever 2331′, 2331″, 2331^; the fifth lever 2335′, 2335″, 2335^ is reset by the fifth cam 2325′, 2325 The sixth lever 2336′, 2336″, 2336^, driven by the sixth cam 2326′, 2326″, 2326^, counteracts the third reset blocks 23331′, 23331″, 23331^ on the third lever 2333′, 2333″, 2333^ to reset the third lever 2333′, 2333″, 2333^.

[0088] In the above structure, the fourth cam 2324′, 2324″, 2324^, the fifth cam 2325′, 2325″, 2325^ and the sixth cam 2326′, 2326″, 2326^ can be used to control the fourth lever 2334′, 2334″, 2334^, the fifth lever 2335′, 2335″, 2335^ and the sixth lever 2336′, 2336″, 2336^, so that the first lever 2331′, 2331″, 2331^, the second lever 2332′, 2332″, 2332^ and the third lever 2333′, 2333″, 2333^ can be reset in time during operation.

[0089] In this embodiment, a fillet spacing adjustment slide rail 211 is provided on the connecting plate 273" of the first covering mechanism 21, a spacing adjustment slider 212 is provided on the fillet spacing adjustment slide rail 211, a spacing adjustment slider 212 is provided on the spacing adjustment slider 212, and two spacing adjustment plates 213 are provided on the same connecting plate 273" of the first covering mechanism 21, and can slide relatively far away or close, and the filleting device 30 is located on a single spacing adjustment plate.

[0090] In the above structure, two rounded corner devices 30 are arranged on the same rounded corner spacing adjustment rail 211, which can control the spacing between the rounded corners on the same side of the paperboard b through adjustment to adapt to different cover sizes.

[0091] In this embodiment, the connecting plate 273" of the first covering mechanism 21 is further provided with spacing adjustment hand wheels 214 at both ends, and an adjusting screw rod 2141 is provided between the two spacing adjustment hand wheels 214, and the adjusting screw rod 2141 is linked with the spacing adjustment hand wheels 214 through a gear 2142; the spacing adjustment plate 213 is provided with a spacing adjustment nut 2131 which is threadedly matched with the adjusting screw rod 2141, so as to control the two spacing adjustment plates 213 to move closer to or farther away from each other when the adjusting screw rod 2141 rotates.

[0092] In the above structure, the threads at both ends of the adjusting screw rod 2141 rotate in opposite directions, so as to achieve the distance adjustment nuts 2131 to move closer to or farther away from each other.

[0093] In this embodiment, the rounded corner device 30 includes an oblique slide rail 32 fixed on the spacing adjustment plate 213 and arranged in the horizontal diagonal direction of the cover a or cardboard b during production, the oblique slide rail 32 is provided with an oblique slider 321, and the spacing adjustment plate 213 is provided with an oblique push cylinder 322 for pushing the oblique slider 321 to slide; the oblique slider 321 is provided with an oblique push vertical slide rail 33, and the oblique push vertical slide rail 33 is provided with a main oblique push vertical slider 331 and a secondary oblique push vertical slider 332, the main oblique push vertical slider 331 is provided with a slider frame 3311, the slider frame 3311 is provided with a tension spring 3312 for pulling the main oblique push vertical slider 331 downward and a reset cylinder 3313 for pushing the main oblique push vertical slider 331 upward, and the slider frame 3311 is also provided with a pressing roller 331 4. The spacing adjustment plate 213 is provided with a plate-shaped cam 34 adapted to the pressing roller 3314, which gradually decreases in height when the oblique slider 321 slides in the horizontal diagonal direction of the cover a or the cardboard b during production to round the corners; the rounded corner push plate 31 is fixed on the auxiliary oblique push vertical slider 332, and the auxiliary oblique push vertical slider 332 is provided with a pre-pressing support frame 3321, and the slider frame 3311 is provided with a thickness adjustment rod 3315 threadedly matched therewith, the lower end of the thickness adjustment rod 3315 passes through the pre-pressing support frame 3321 and is provided with an anti-drop cap 33151, the thickness adjustment rod 3315 is in sliding cooperation with the pre-pressing support frame 3321, and the thickness adjustment rod 3315 is provided with a pre-pressing spring 33152, and the two ends of the pre-pressing spring 33152 are respectively supported on the slider frame 3311 and the pre-pressing support frame 3321.

[0094] In the above structure, when the cover a and the cardboard b are placed on the supporting slide rail 24" of the first covering mechanism 21, the cover a and the cardboard b are fixed by the positioning mechanism 25" of the first covering mechanism 21, and then the reset cylinder 3313 is reset, so that the tension spring 3312 pulls the main oblique vertical slider 331 to move downward, causing the clamping roller 3314 to abut against the plate cam 34. At this time, the pressure strips of the first covering mechanism 21 begin to approach each other and move downward. Before the pressure strip 28" folds the two sides of the cover a and squeezes and adheres them to the cardboard b, the oblique push cylinder 322 drives the rounded corner push plate 31 to slide in the diagonal direction of the cardboard b. At the same time, the clamping roller 3314 reaches the position of the concave contour 341 of the plate cam 34, causing the clamping roller 3314 to lose support, causing the tension spring 3312 to abut against the plate cam 34. 3312 further pulls the main oblique vertical slider 331 to move downward, and with the support of the pre-load spring 33152, pushes the secondary oblique vertical slider 332 to slide down synchronously, so that the lower end of the rounded corner push plate 31 slides toward the diagonal direction of the cardboard b and gradually approaches the upper surface of the cardboard b and presses the cover a on the top of the cardboard b. Then, the pressure strip 28" moves downward to fold the side of the cover a in half and adhere it to the cardboard b. In order to ensure the clamping force, the pressure strip 28" and the parts located on the entire connecting plate 273" will follow the downward movement when the pressure strip 28" is clamped. At this time, the secondary oblique vertical slider 332 will realize reverse sliding and compressing the pre-load spring 33152 when the pressure strip 28" is further pressed down because the lower end of the rounded corner push plate 31 is against the cardboard b, so as to prevent the rounded corner push plate 31 from scratching the cardboard b due to excessive downward pressure.

[0095] In this embodiment, the alignment device 2 is further provided with a feeding mechanism 40 ; the second coating device 4 is provided with a discharging mechanism 50 .

[0096] In the above structure, a conveyor belt 41 is provided on the feeding mechanism 40, and the upper annular surface of the conveyor belt 41 is located on the supporting slide rail 24′ of the alignment mechanism 20. Before the cover a and the cardboard b are fed in, the roller 23451 is pressed on the conveyor belt 41. When the cover a and the cardboard b are fed in, the cover a and the cardboard b are transported between the conveyor belt 41 and the roller 23451; the discharging mechanism 50 is provided with a discharging belt 51, and the discharging belt 51 is located on the supporting slide rail 24^ of the second covering mechanism 22.

[0097] In this embodiment, the transfer device 1 includes a machine wall 60 located on both sides of the alignment device 2, the first covering device 2 and the second covering device 4, the machine wall 60 is provided with a transfer vertical slide rail 61, the transfer vertical slide rail 61 is provided with a vertical slide plate 62 that can slide up and down along the transfer vertical slide rail 61, the machine wall 60 is provided with a crank 63 driven to rotate by a motor, the crank 63 is provided with a rocker 64 hinged to the vertical slide plate 62, so as to control the vertical slide plate 62 to rise and fall when the crank 63 rotates; the vertical slide plate 62 is provided with a horizontally arranged transfer slide rail 621, the rotating slide rail 621 is provided with a transfer slider 622, and the transfer A transfer slide 623 is provided on the feeding slide 622, and the transfer slide 623 between adjacent side walls 60 is connected by a cross bar 624, and the cross bar 624 is provided with two groups of adsorption devices 65 arranged in the length direction of the transfer slide 621; the vertical slide 62 is provided with a pulley group 66 driven by a motor, and the synchronous belt 661 of the pulley group 66 is connected to the transfer slide 623 through a synchronous belt fixing buckle 662, so that the transfer slide 623 and the adsorption device 65 on the cross bar 624 are driven by the synchronous belt 661 to transfer the cover a and cardboard b during production between the alignment device 2 and the first covering device 3 and between the first covering device 3 and the second covering device 4.

[0098] In the above structure, the pulley groups 66 on the vertical slides 62 on both sides are driven by a synchronous belt system 67 connected to the two pulley groups 66 by a motor and power. The synchronous belt system 67 is provided with a sliding shaft 671. The sliding shaft 671 transmits torque while realizing the lifting and lowering of the pulley 663 of the pulley group 66 on the sliding shaft 671, so that the pulley group 66 on the vertical slide 62 can realize power transmission when the vertical slide 62 moves up and down. The transfer device 1 transfers the cover a and the cardboard b through the suction cup 68, and its structure has the advantages of good rigidity and precise positioning.

[0099] The beneficial effects of the present invention are as follows: the paperboard b is coated with glue and placed on the cover a and then placed on the support rail 24', and the two sides of the cover a and the paperboard b to be aligned are pre-pressed and positioned by the positioning mechanism 25' on the alignment mechanism 20, and then the pressure strips 28' of the alignment mechanism 20 rise from the left and right sides of the paperboard b to lift the outer edges of the two sides of the cover a and press them together, so that the paperboards b on the cover a are pressed and aligned with each other, and then the pressure strips 28' are reset and the positioning mechanism 25' releases the cover a and the paperboard b; the cover a and the paperboard b are pressed and aligned. b is sent to the support slide rail 24" of the first covering mechanism 21, the positioning mechanism 25" of the first covering mechanism 21 fixes the two sides of the cover a and the paperboard b to be covered, the rounded corner device 30 drives the rounded corner push plate 31 to descend and push it in the diagonal direction of the cover a or the paperboard b, and the pre-glued corner position of the cover a is covered and pressed on the rounded corner of the paperboard b, and then the pressure strip 28" of the first covering mechanism 21 moves from the two sides of the cover a to each other and presses down to press the two sides of the cover a pre-glued to the paperboard b to adhere and fix. , adhere the rounded corners of cover a to the side of cover a, then reset the rounded corner device 30, and then reset the pressure strip 28″, and finally release the cover a and the paperboard b by the positioning mechanism 25″; send the cover a and the paperboard b to the supporting slide rail 24^ of the second covering mechanism 22, and the positioning mechanism 25^ of the second covering mechanism 22 fixes the other two sides of the cover a and the paperboard b that are not covered, and the pressure strip 28^ of the second covering mechanism 22 moves from the other two sides of the cover a to each other and presses down to fix the other two sides of the cover a that are pre-glued. It is laterally pressed on the cardboard b to adhere and fix it, and then the pressure strip 28^ is reset, and finally the positioning mechanism 25^ releases the cover a and the cardboard b to complete the covering; it has the advantages of high production efficiency, rounded corner covering, good centering of the cardboard b, and high mutual parallelism. Compared with the feeding mechanism 40 of the existing assembly line, it can effectively correct the situation that the cardboard b is misaligned with each other due to transportation reasons when the feeding mechanism 40 feeds the cover a and the cardboard b for covering, which eventually leads to the defect that the cardboard b is not parallel and tilted to each other after the cover a is covered.

[0100] In the above reference numerals, since the present invention has multiple structural devices and complex mechanisms, the alignment mechanism 20, the first covering mechanism 21, and the second covering mechanism 22 have structural components with the same structure and the same working principle. In order to ensure the clarity and accuracy of the reference numerals and avoid excessive naming that causes difficulties in reading and understanding the specification, suffixes (′), (″), and (^) are used to distinguish them. In the specification, the reference numerals with the same suffix in the same sentence should be regarded as a complete sentence; for example: (a span rail 11′, 11″, 11^ is provided with at least one pair of span sliders 111′, 111 ", 111^) means (a span slide rail 11' is provided with at least one pair of span sliders 111') and (a span slide rail 11" is provided with at least one pair of span sliders 111") and (a span slide rail 11^ is provided with at least one pair of span sliders 111^); for another example: (the alignment mechanism 20, the first covering mechanism 21, and the second covering mechanism 22 respectively include vertical plates 23', 23", and 23^) means (the alignment mechanism 20 includes a vertical plate 23'), (the first covering mechanism 21 includes a vertical plate 23", and (the second covering mechanism 22 includes 23^).

[0101] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the scope of protection of the present invention.

Claims

1. A corner punching device for an edge wrapping machine, characterized in that: The invention comprises a first covering base and a second span adjustment mechanism arranged on the first covering base, wherein the second span adjustment mechanism is provided with two first covering mechanisms which are arranged at intervals and whose intervals are adjustable from each other; the first covering mechanism comprises a vertical plate, wherein the vertical plate is provided with a support slide rail, wherein the support slide rail is used to place and support covers and paperboards during production, wherein the vertical plate is also provided with a positioning mechanism for pressing the edges of the covers and paperboards during production onto the support slide rail, wherein the vertical plate is also provided with a pressure strip which is driven to rise and fall by a lifting mechanism and is moved toward another vertical plate of the first covering device by a folding mechanism; and a folding mechanism of the first covering mechanism A rounded corner device is provided on the cover, and the rounded corner device is provided with a rounded corner push plate which is pushed in the diagonal direction of the cover and approaches the surface of the paperboard after the positioning mechanism fixes the cover and the paperboard during production, so as to press the corner of the cover to be covered on the rounded corner surface of the paperboard. The pressure strip of the first covering mechanism folds the edges of both sides of the cover and presses them on the paperboard after the cover is covered on the rounded corner of the paperboard during production; a fixing frame is provided on the vertical plate of the first covering mechanism, and a cam shaft driven to rotate by a servo motor is provided on the fixing frame, and a first cam for controlling the operation of the positioning mechanism is provided on the cam shaft, a second cam for controlling the operation of the lifting mechanism and a second cam for controlling the operation of the lifting mechanism are provided on the cam shaft. A third cam for controlling the operation of the folding mechanism; a lever shaft is provided on the fixed frame of the first covering mechanism, and a first lever, a second lever and a third lever are provided on the lever shaft; a positioning mechanism of the first covering mechanism includes a fixed swing frame fixed to the vertical plate, a positioning swing shaft that can rotate relative to the fixed swing frame is provided on the fixed swing frame, a first swing rod is provided on the positioning swing shaft, the first swing rod is hinged to the first lever through a first connecting rod, a roller adapted to the first cam is provided on the first lever, a positioning swing rod is provided on the positioning swing shaft, and a roller for adjusting the position of the production by rotating the positioning swing shaft is provided on the positioning swing rod. The cover and the paperboard are pressed against a clamping assembly on the supporting slide rail; the lifting mechanism of the first covering mechanism includes vertical slide rails fixed on both sides of the vertical plate, the vertical slide rails are provided with vertical sliders, the vertical sliders are provided with supporting plates, and also includes a vertical swing shaft located on a fixed frame, the vertical swing shaft is provided with a second swing rod, the second swing rod is hinged to the second lever through a second connecting rod, the second lever is provided with a roller adapted to the second cam, and vertical swing rods are further provided at both ends of the vertical swing shaft, the vertical swing rod is hinged to the vertical slider through a torsion connecting rod, so that the torsion connecting rod is pulled by the swing of the vertical swing rod to realize the lifting and lowering control of the vertical slider;The folding mechanism of the first covering mechanism comprises a transverse slide rail fixed on the supporting plate, the transverse slide rail is provided with a transverse slider, the transverse slider is provided with a connecting plate for connecting the transverse sliders on both sides of the vertical plate, the pressure strip is located on the side of the connecting plate facing the other vertical plate, the connecting plate is also provided with a transverse pushing block, the transverse pushing block is provided with a waist-shaped hole, the fixed frame is also provided with a transverse swing shaft, the transverse swing shaft is provided with a third swing rod, the third swing rod is hinged with the third lever through a third connecting rod, the third lever is provided with a roller adapted to the third cam, the transverse swing shaft is also provided with a transverse swing rod, and the transverse swing rod is provided with a roller adapted to the waist-shaped hole and pushed when the transverse swing rod swings A lateral roller for sliding a movable lateral slider; a fillet spacing adjustment slide rail is provided on the connecting plate of the first covering mechanism, a spacing adjustment slider is provided on the fillet spacing adjustment slide rail, a spacing adjustment plate is provided on the spacing adjustment slider, two spacing adjustment plates are provided on the same connecting plate of the first covering mechanism, and can slide relatively far away or close, and the filleting device is located on a single spacing adjustment plate; the filleting device includes an oblique slide rail fixed to the spacing adjustment plate and arranged in the horizontal diagonal direction of the cover or paperboard during production, an oblique slider is provided on the oblique slide rail, and an oblique push cylinder for pushing the oblique slider to slide is provided on the spacing adjustment plate; the oblique slider is provided with an oblique push vertical cylinder The straight slide rail is provided with a main oblique vertical slide block and a secondary oblique vertical slide block on the oblique vertical slide rail, the main oblique vertical slide block is provided with a slide block frame, the slide block frame is provided with a tension spring for pulling the main oblique vertical slide block downward and a reset cylinder for pushing the main oblique vertical slide block upward, and a clamping roller is also provided on the slide block frame, and a plate-shaped cam adapted to the clamping roller is provided on the spacing adjustment plate, which gradually reduces the height when the oblique slide block slides in the horizontal diagonal direction of the cover or cardboard during production to achieve rounded corners; the rounded corner push plate is fixed on the secondary oblique vertical slide block, and a pre-pressure support frame is provided on the secondary oblique vertical slide block, and a thickness adjustment rod matched with its thread is provided on the slide block frame. The lower end of the thickness adjustment rod passes through the pre-stressing support frame and is provided with an anti-dropping cap. The thickness adjustment rod is in sliding cooperation with the pre-stressing support frame. The thickness adjustment rod is provided with a pre-stressing spring. The two ends of the pre-stressing spring are respectively supported on the slider frame and the pre-stressing support frame; the second span adjustment mechanism includes two span rails arranged on the first covering base, one span rail is provided with at least one pair of span sliders, the span sliders of the two adjacent span rails on the first covering base are provided with bottom plates, the vertical plates of the first covering mechanism are correspondingly fixed on the bottom plate, the bottom plate is provided with a screw nut, and the screw nuts of the two bottom plates are connected by a double-headed screw, so as to control the two first covering mechanisms to approach or move away synchronously. ; 2. The corner punching device of the hemming machine according to claim 1, characterized in that: The lever shaft is also provided with a fourth lever, a fifth lever and a sixth lever, and the camshaft is also provided with a fourth cam, a fifth cam and a sixth cam; the fourth lever, the fifth lever and the sixth lever are all provided with rollers respectively adapted to the fourth cam, the fifth cam and the sixth cam, and the first lever, the second lever and the third lever are respectively provided with a first reset block, a second reset block and a third reset block; the fourth lever, driven by the fourth cam, abuts against the first reset block on the first lever to achieve the reset of the first lever; the fifth lever, driven by the fifth cam, abuts against the second reset block on the second lever to achieve the reset of the second lever; the sixth lever, driven by the sixth cam, abuts against the third reset block on the third lever to achieve the reset of the third lever.

3. The corner punching device of the hemming machine according to claim 1, characterized in that: Both ends of the connecting plate of the first covering mechanism are also provided with spacing adjustment handwheels, and an adjustment screw is provided between the two spacing adjustment handwheels, and the adjustment screw is linked with the spacing adjustment handwheel through a gear; the spacing adjustment plate is provided with a spacing adjustment nut which cooperates with the adjustment screw thread to control the two spacing adjustment plates to move closer or farther away from each other when the adjustment screw rotates.

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