A protective cover bag making machine for trolley case

Abstract

The present invention relates to the technical field of bag making machines, and in particular to a bag making machine for a protective cover for a trolley case. A machine frame is provided with an unwinding device for placing a rolled non-woven fabric, a folding device for folding the non-woven fabric, a punching device for punching the non-woven fabric, a patch device for arranging a connecting piece on the non-woven fabric, a connecting piece positioning device for fixing the free end position of the connecting piece, a bag folding device for folding the non-woven fabric in half and folding the bottom, a color code positioning device for confirming the position of the non-woven fabric, a protective cover forming device, and a trimming and bagging device in sequence. The present invention has the beneficial effects of realizing fully automatic production of protective covers and improving production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of bag making machines, and in particular to a bag making machine for a protective cover of a trolley case. Background Art

[0002] When people are on business trips or traveling, they will carry a suitcase to store the necessary clothes, personal care items, etc. However, when the suitcase is in use, its surface is easily contaminated with dust, and it is easy to rub and scratch during use, causing damage and affecting the appearance and service life. For this reason, a suitcase protective cover has appeared on the market, which is made of non-woven fabric, because non-woven fabric has a certain waterproof effect and is stronger than plastic bags, such as Figure 1 Described, two connecting pieces are arranged at the sleeve opening of the protective sleeve, and the two connecting pieces are arranged correspondingly and connected by Velcro. Two openings for the pull rod and the handle to pass through are arranged at the bottom of the protective sleeve, and the protective sleeve is arranged in three dimensions.

[0003] The existing production process of protective covers has a low degree of automation and is mostly done by manual sewing. This production method has problems of low efficiency and uneven quality. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a bag making machine for protective covers for trolley cases in view of the above-mentioned deficiencies in the prior art, so as to realize the full-automatic production of protective covers and improve the production efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a protective cover bag making machine for a trolley case, comprising a frame, characterized in that: the frame is provided with an unwinding device for placing a roll of non-woven fabric, a folding device for folding the non-woven fabric, a punching device for punching the non-woven fabric, a patch device for arranging a connecting piece on the non-woven fabric, a connecting piece positioning device for fixing the position of the free end of the connecting piece, a bag folding device for folding the non-woven fabric in half and folding the bottom, a color code positioning device for confirming the position of the non-woven fabric, a protective cover forming device, and a trimming and bagging device in sequence.

[0006] The present invention has the above characteristics: the rolled non-woven fabric starts from the unwinding device and enters the folding device, punching device, patch device, connecting piece positioning device, bag folding device, color code positioning device, protective cover forming device, and edge cutting and bag dividing device in sequence; the non-woven fabric is cut into finished protective covers by the edge cutting and bag dividing device; the folding device folds the sides of the non-woven fabric; the punching device punches out two openings on the non-woven fabric for the pull rod and the handle to pass through; the patch device sticks Velcro on the connecting piece and then sticks the connecting piece on the non-woven fabric; the bag folding device folds the flat non-woven fabric in half; the color code positioning device has a positioning effect on the conveying position of the non-woven fabric and can correct it in time; the protective cover forming device processes the bottom of the folded non-woven fabric so that it can be three-dimensional when used; in this series of operations, the non-woven fabric is made into a protective cover; no labor is required in the production process; the degree of automation is high, the production efficiency is high, and the production quality is high.

[0007] A further arrangement of the present invention is that the folding device includes a first cross bar arranged on a frame, folding rollers symmetrically suspended at both ends of the first cross bar, and a folding assembly symmetrically passed through both ends of the first cross bar, the folding assembly includes a folding plug plate, a plug plate fixing rod with one end movably connected to the folding plug plate, and a plug plate position adjusting member for hanging the plug plate fixing rod on the first cross bar.

[0008] The present invention with the above characteristics: the two side edges of the non-woven fabric are folded by the folding assembly, the folding roller has the function of limiting and pressing the non-woven fabric to be folded, and the insert plate position adjustment part can adjust the insert plate in the horizontal or vertical position to better adapt to the non-woven fabric.

[0009] A further configuration of the present invention is that the punching device comprises two feeding pressing plates spaced apart on a frame, a feeding gap is provided in the feeding pressing plates, and a punching assembly and a contoured cavity for the punching assembly to pass through are provided on the feeding pressing plates.

[0010] The present invention with the above characteristics: the folded non-woven fabric passes through the feed gap, the punching assembly cooperates with the profiling cavity to punch holes in the non-woven fabric, the profiling cavities on the two spaced feed pressing plates are staggered and located on two horizontal lines, which can ensure that two adjacent holes are punched out, and the feed pressing plates are provided to limit the non-woven fabric, thereby preventing warping and the like from occurring during the punching process, thereby improving the punching accuracy of the punching device.

[0011] The present invention is further configured as follows: the patch device includes a feeding mechanism for placing a connecting sheet material roll, a second feeding mechanism for placing a Velcro material roll, a bonding mechanism for bonding the Velcro and the connecting sheet together, a transfer mechanism for transferring the cut connecting sheet to the non-woven fabric, and an ultrasonic heat sealing mechanism for heat sealing the two.

[0012] The present invention with the above characteristics: since a complete Velcro includes a Velcro hook surface and a Velcro fleece surface, two patch devices are arranged in the whole machine, and the two patch devices are arranged opposite to each other. The second feeding mechanisms of the two patch devices respectively place the Velcro hook fabric roll and the Velcro fleece fabric roll, and the two patch devices are respectively arranged on both sides of the non-woven fabric, with the same working speed. At the same time, the connecting piece with the Velcro is heat-sealed on the non-woven fabric. The two patch devices are arranged side by side to realize the simultaneous attachment of the two connecting pieces to the protective cover, thereby simplifying the production process and further improving production efficiency.

[0013] A further configuration of the present invention is that the connecting piece positioning device comprises a second cross bar arranged on the frame and ultrasonic heat sealing mechanisms respectively arranged at both ends of the second cross bar, and the ultrasonic heat sealing mechanisms can move along the second cross bar to adjust the relative position.

[0014] The present invention with the above characteristics: one side of the connecting piece is heat-sealed and fixed to the non-woven fabric, and the other three sides are freely set. During the transmission process, the connecting piece may warp up, fly around, etc., affecting the normal transportation of the non-woven fabric. The connecting piece may even get stuck in the equipment, causing equipment failure. By setting a connecting piece positioning device, the connecting piece and the non-woven fabric are heat-sealed, and the heat-sealing temperature is adjusted to achieve a temporary positioning effect, which can be easily separated manually. The heat-sealing mechanism can move along the second cross bar to improve the adaptability of the connecting piece positioning device, which is suitable for non-woven fabrics of different widths.

[0015] A further configuration of the present invention is that the bag folding device includes a first flanging mechanism for changing the transport direction of the non-woven fabric, a triangular pyramid bag folding device for folding the non-woven fabric after the direction is changed, and a plug-in plate mechanism for flat-folding the bottom of the non-woven fabric after being folded in half, and a second flanging mechanism for changing the transport direction of the non-woven fabric again is provided between the triangular pyramid bag folding device and the plug-in plate mechanism.

[0016] The present invention with the above characteristics: the non-woven fabric has been in a horizontal transportation state in the previous process, and the non-woven fabric is folded by the first flanging mechanism to change its transportation direction so that it fits on the triangular pyramid bag folding machine. The non-woven fabric folded in half by the triangular pyramid bag folding machine returns to the horizontal transportation state, and is changed from the horizontal transportation state to the vertical transportation state by the second folding mechanism, and then passes through the plug-in mechanism. After the non-woven fabric is folded in half by the triangular pyramid bag folding machine, the folded edge is the bottom of the protective cover. By setting the plug-in mechanism, the bottom is folded inward toward the opening direction of the protective cover. The bottom of the protective cover produced by this process will not protrude, thereby reducing the floor space occupied when the protective cover is stored.

[0017] A further arrangement of the present invention is: the protective cover forming device includes a bottom sealing mechanism, an indentation mechanism and a bottom punching mechanism, the bottom sealing mechanism includes a bottom sealing mold, a first position adjustment mechanism that can adjust the relative position of the bottom sealing mold on the frame, the indentation mechanism includes an indentation frame, a guide rod arranged between the indentation frames, a third slider inserted into the guide rod, and a pressure wheel frame movably mounted on the guide rod through the third slider, and the bottom punching mechanism includes a bottom punching mold and a second position adjustment mechanism arranged at the bottom of the bottom punching mold.

[0018] The present invention with the above characteristics: the bottom cover mold is set on the first position adjustment mechanism, and the position of the bottom cover mold on the frame can be changed by operating the first position adjustment mechanism, so as to adapt to protective covers of various sizes and improve the overall application range of the equipment. The same is true for setting the second position adjustment mechanism.

[0019] A further configuration of the present invention is that the trimming and bagging device comprises a first cutter and a second cutter which are sequentially mounted on a frame, and a support plate for placing a finished product protective cover is provided on a side of the second cutter away from the first cutter.

[0020] The present invention with the above characteristics: the first cutter cuts one side of the protective sleeve, and the second cutter cuts the other side of the protective sleeve, and the finished protective sleeves cut in sequence by the two cutters fall on the pallet and are stacked.

[0021] The present invention is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the background technology of the present invention.

[0023] Figure 2 It is a schematic structural diagram of an embodiment of the present invention.

[0024] Figure 3 It is a schematic structural diagram of a folding device according to an embodiment of the present invention.

[0025] Figure 4 It is a schematic structural diagram of a punching device according to an embodiment of the present invention.

[0026] Figure 5 Schematic diagram of the structure of the patch device according to an embodiment of the present invention.

[0027] Figure 6 It is a structural schematic diagram of the bonding mechanism according to an embodiment of the present invention.

[0028] Figure 7 It is a structural schematic diagram of the transfer mechanism according to an embodiment of the present invention.

[0029] Figure 8 It is a schematic structural diagram of the second embodiment of the transfer mechanism in the present invention.

[0030] Fig. 9 It is a schematic structural diagram of a bag folding device according to an embodiment of the present invention.

[0031] Fig.10 It is a first structural schematic diagram of a bag folding device according to an embodiment of the present invention.

[0032] Fig.11 It is a second structural schematic diagram of the bag folding device according to an embodiment of the present invention.

[0033] Fig.12 It is a schematic diagram of the structure of a triangular pyramid bag folding device of a bag folding device according to an embodiment of the present invention.

[0034] Fig.13 It is a schematic structural diagram of a protective sleeve forming device and a trimming and bagging device according to an embodiment of the present invention.

[0035] Fig.14 It is a structural schematic diagram of the bottom cover mechanism according to an embodiment of the present invention.

[0036] Fig.15 It is a structural schematic diagram of the bottom punching mechanism according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0038] like Figure 2-15 The protective cover bag making machine for a trolley case shown in the figure comprises a frame, on which are arranged in sequence a reeling device 2 for placing a roll of non-woven fabric, a folding device 3 for folding the non-woven fabric, a punching device 4 for punching holes in the non-woven fabric, a patch device 5 for arranging a connecting piece on the non-woven fabric, a connecting piece positioning device 6 for fixing the position of the free end of the connecting piece, a bag folding device 7 for folding the non-woven fabric in half and folding the bottom, a color code positioning device 8 for confirming the position of the non-woven fabric, a protective cover forming device 9, and a trimming and bagging device 10.

[0039] The folding device 3 includes a first cross bar 31 arranged on the frame, folding rollers 32 symmetrically suspended at both ends of the first cross bar 31, and a folding assembly 33 symmetrically passed through both ends of the first cross bar 31. The folding assembly 33 includes a folding plug plate 331, a plug plate fixing rod 332 one end of which is movably connected to the folding plug plate 331, and a plug plate position adjustment member 333 for hanging the plug plate fixing rod 332 on the first cross bar 31.

[0040] A suspension plate 35 is provided between the folding roller 32 and the first cross bar 31 , and a positioning rod 36 having one end connected to the suspension plate 35 is provided on the frame. An operating turntable 37 is provided at one end of the positioning rod 36 .

[0041] The folding device 3 further comprises a third cross bar 39 arranged on the frame and a first ultrasonic heat sealing mechanism 38 respectively arranged at both ends of the third cross bar 39. The first ultrasonic heat sealing mechanism 38 can move along the third cross bar 39 to adjust the relative position.

[0042] The punching device 4 includes two feeding pressure plates 41 arranged at intervals on the frame, a feeding gap 42 is provided in the feeding pressure plate 41, a punching assembly 43 and a contoured cavity 44 for the punching assembly 43 to pass through are provided on the feeding pressure plate 41, and gear rack assemblies 45 that can adjust the position of the feeding plate 41 on the frame are provided on both sides of the feeding plate 41.

[0043] The patch device 5 includes a feeding mechanism 51 for placing a connecting sheet material roll, a second feeding mechanism 52 for placing a Velcro material roll, a bonding mechanism 53 for bonding the Velcro and the connecting sheet together, a transfer mechanism 54 for transferring the cut connecting sheet to the non-woven fabric, and a second ultrasonic heat sealing mechanism 55 for heat-sealing the two. The second ultrasonic heat sealing mechanism 55 is arranged in the transfer mechanism 54. The Velcro includes a Velcro hook surface and a Velcro fleece surface. The two surfaces need to be respectively bonded to two connecting sheets. Therefore, the whole equipment includes two patch devices 5 arranged opposite to each other. A working surface 59 for placing the non-woven fabric is formed between the two transfer mechanisms 54.

[0044] The laminating mechanism 53 includes laminating vertical plates 531 respectively arranged on both sides of the frame, an active laminating roller 532 horizontally arranged between the laminating vertical plates 531, a driven laminating roller 533 and a cutter 534. The active laminating roller 532 is linked with a first driving source linkage 535 arranged on one side of the laminating vertical plate 531. The driven laminating roller 533 is arranged above the active laminating roller 532, and mounting blocks 536 are sleeved on both sides thereof. The laminating vertical plate 531 is provided with a slide groove 5311 for placing the mounting block 536 and a first cylinder 537 that can drive the mounting block 536 to move along the slide groove 5311. Slide rail slider assemblies 538 are provided at both ends of the cutter 534 for mounting it on the laminating vertical plate 531. A support frame 539 for merging Velcro and connecting pieces is set on the side of the laminating vertical plate 531 facing the material discharge mechanism 51.

[0045] The bonding mechanism 53 also includes a first pressing roller 501 and a second pressing roller 502 arranged between the bonding vertical plate 531. The first pressing roller 501 is fixedly arranged below the second pressing roller 502, and a feeding gap is formed therebetween. Connecting rods 503 are provided at both ends of the second pressing roller 502. The connecting rods 503 are connected to the bonding vertical plate 531 through a sliding connecting block 504. A second slide groove 505 for installing the sliding connecting block 504 is provided in the bonding vertical plate 531. A spring 506 is provided in the second slide groove 505, one end of which is against the sliding connecting block 504 and the other end is against the second slide groove wall.

[0046] The transfer mechanism 54 includes a transfer mounting frame 541 mounted above the first frame, a first manipulator 542 arranged below the transfer mounting frame 541, and a transfer platform 543 arranged on the discharge side of the bonding mechanism 53. The upper end surface of the transfer mounting frame 541 is provided with a first synchronous transmission assembly 544 linked to the manipulator 52, and the second ultrasonic heat sealing mechanism 55 is arranged at one end of the transfer mounting frame 541 close to the transfer platform 543. The transfer platform 543 is placed with a connecting piece 20 with Velcro attached and cut.

[0047] A waste paper pipe 56 is provided in the frame. One end of the waste paper pipe 56 is connected to a fan 57 and the other end extends outside the frame. The fan 57 is fixedly installed in the frame. An opening 561 is provided on the waste paper pipe 56 .

[0048] The connecting piece positioning device 6 comprises a second cross bar 61 arranged on the frame and ultrasonic heat sealing mechanisms 62 respectively passing through both ends of the second cross bar 61 . The ultrasonic heat sealing mechanisms 62 can move along the second cross bar 61 to adjust the relative position.

[0049] The bag folding device 7 includes a first flanging mechanism 71 for changing the transport direction of the non-woven fabric, a triangular pyramid bag folding device 72 for folding the non-woven fabric after the direction is changed, and a plug-in mechanism 73 for flattening the bottom of the non-woven fabric after the folding. A second flanging mechanism 74 for changing the transport direction of the non-woven fabric again is provided between the triangular pyramid bag folding device 72 and the plug-in mechanism 73.

[0050] The first flanging mechanism 71 includes a second cross bar 711 horizontally arranged at the bottom of the frame and a triangular frame 712 vertically arranged in the frame. The triangular frame 712 is a right-angled triangle including a first right-angled side 7121 located in the vertical direction, a second right angle 7122 located in the horizontal direction and a hypotenuse 7123. The non-woven fabric passes through the bottom of the second cross bar 711 and then passes through the hypotenuse 7123 of the triangular frame 712. The first flanging mechanism 71 also includes a first tensioning roller 713 and a second tensioning roller 714 vertically arranged. The first tensioning roller 713 is arranged on one side of the first right-angled side 7121, and the second tensioning roller 714 is arranged on the side close to the triangular pyramid bag folding device 72.

[0051] A vertically arranged height adjustment rod 715 is provided between the first tensioning roller 713 and the first right-angled side 7121, and linkage blocks 716 which can move axially along the height adjustment rod 715 are sleeved on both ends of the height adjustment rod 715. A second cylinder 717 fixedly connected to the linkage block 716 is provided above the frame, and the first tensioning roller 713 and both ends of the first right-angled side 7121 are fixedly connected to the linkage block 716. A linear slide groove 718 is vertically provided on the side where the second right angle 7122 is connected to the hypotenuse 7123, and a second slider 719 fixedly connected to the second right angle 7122 is provided in the linear slide groove 718. The triangular frame 712 is movably arranged in the frame through the second slider 719 and the linkage block 716.

[0052] The triangular pyramid bag folding device 72 includes a first vertex 721, a second vertex 722, a third vertex 723 and a fourth vertex 724. The first vertex 721 and the second vertex 722 are located on the first edge length 725, the third vertex 723 and the fourth vertex 724 are located on the second edge length 726, and the second edge length 726 is arranged horizontally. The first surface 727 formed by the first vertex 721, the third vertex 723 and the fourth vertex 724, the second surface 728 formed by the first vertex 721, the second vertex 722 and the third vertex 723, and the third surface 729 formed by the second vertex 722, the third vertex 723 and the fourth vertex 724 are non-woven fabric covered surfaces. Two fixing rods 75 are arranged on the side of the first edge length 725 and the side of the fourth surface 720 formed by the first vertex 721, the second vertex 722 and the fourth vertex 724. The fixing rods 75 hang the triangular pyramid bag folding device 72 in the frame.

[0053] The inserting plate mechanism 73 includes an inserting plate 731 and a fixing member 732 for vertically fixing the inserting plate 731 on the outside of the frame. The inserting plate 731 is located at the discharge end of the triangular pyramid bag folding device 72 .

[0054] The second flanging mechanism 74 includes a plurality of feeding rollers 741 suspended on the upper end of the triangular pyramid bag folding device 72, a first pressing roller assembly arranged at the discharge end of the triangular pyramid bag folding device 72, and a second pressing roller assembly arranged at the bottom of the inserting plate mechanism 73. The plurality of feeding rollers 741 are arranged side by side on the upper end of the frame. The first pressing roller assembly includes two first pressing rollers 742 arranged side by side, and a feeding gap is formed between the two first pressing rollers 742. The second pressing roller assembly includes two second pressing rollers 743 arranged side by side, and a feeding gap is formed between the two second pressing rollers 743. The second pressing roller 743 close to the frame is provided with a motor 745 for driving it to rotate.

[0055] The protective cover forming device 9 includes a bottom sealing mechanism 91 , a creasing mechanism 92 and a bottom punching mechanism 93 .

[0056] The bottom cover mechanism 91 includes a bottom cover mold 911 and a first position adjustment mechanism 94 which can adjust the relative position of the bottom cover mold 911 on the frame. The bottom cover mold 911 includes a base 9111 installed on the first position adjustment mechanism 94, a V-shaped ultrasonic heat sealing lower mold 9112 arranged on the base 9111, and an upper mold 9113 correspondingly arranged above the V-shaped ultrasonic heat sealing lower mold 9112. The position adjustment mechanism 94 includes a rack 941 and an adjustment slide rail 942 arranged side by side on both sides of the upper end surface of the frame, a first adjustment rod 943 arranged horizontally on the rack 941, gears 944 meshing with the rack 941 are sleeved at both ends of the first adjustment rod 943, and also includes two linkage rods 925 arranged in parallel with the first adjustment rod 943, the linkage rod 925 is sleeved with an adjustment slider 946 fixedly connected to the base 9111, and the adjustment slide rail 942 is provided with a second adjustment slider (not shown in the figure) fixedly connected to both ends of the linkage rod 925.

[0057] A mounting frame 914 for suspending an upper mold 9113 is provided on the base 9111, and the mounting frame 914 includes two groups of columns 9141 symmetrically arranged on both sides of the base 9111 and a mounting plate 9142 laid flat on the columns 9141, a suspension shaft 9143 fixedly connected to the upper mold 9113 is provided on the mounting plate 9142, the suspension shaft 9143 is movably connected to the mounting plate 9142, a cylinder 9144 for driving the upper mold 9113 to move axially along the suspension shaft 9143 is provided on the mounting plate 9142, a long support plate 912 located between the upper mold 9113 and the V-shaped ultrasonic heat sealing lower mold 9112 is provided on the column 9141, and short support plates 913 are provided at both ends of the long support plate 912.

[0058] The indentation mechanism 92 includes an indentation frame 921, a guide rod 922 arranged between the indentation frames 921, a third slider 923 inserted through the guide rod 922, and a pressure wheel frame 924 movably mounted on the guide rod 922 through the third slider 923. A first power source 925 is provided on one side of the pressure wheel frame 924. The third slider 923 is connected to the first power source 925 through a fourth synchronous transmission assembly 926. A wheel axle 927 is horizontally provided at the bottom of the pressure wheel frame 924. Indentation wheels 928 are sleeved at both ends of the wheel axle 927. Pressure rollers 929 are provided on both sides of the indentation frame 924. Adjustment blocks 920 are provided at both ends of the pressure roller 929. The adjustment blocks 920 are hinged to the indentation frame 924.

[0059] The bottom punching mechanism 93 includes a triangular bottom punching die 931 and a second position adjustment mechanism 932 arranged at the bottom of the bottom punching die 931 . A waste receiving groove 933 is provided below the bottom punching die 931 . The structure of the second position adjustment mechanism 932 is similar to that of the first position adjustment mechanism 94 .

[0060] The trimming and bagging device 10 comprises a first cutter 101 and a second cutter 102 which are sequentially mounted on a frame. A support plate 103 for placing a finished product protective cover is provided on a side of the second cutter 102 away from the first cutter 101 .

[0061] Figure 8 This is the second embodiment of the transfer mechanism 54: the transfer mechanism 58 includes a transfer platform 583 arranged on the discharge side of the laminating mechanism 53, and a transfer mounting frame 581 arranged opposite to the discharge mechanism 51. A second synchronous transmission component 584 perpendicular to the discharge direction of the laminating mechanism 53 is provided on the other side of the transfer platform 583. A transfer track 585 is provided between the second synchronous transmission component 584 and the transfer platform 583. A second manipulator 586 linked to the second synchronous transmission component 584 is provided on the transfer track 585. A third synchronous transmission component 587 is provided on the upper end surface of the mounting frame 581, and a third manipulator 588 linked to the third synchronous transmission component 587 is provided on the lower end surface. One end of the transfer track 585 is connected to the transfer platform 585, and the other end is connected to the third manipulator 588.

Claims

1. A protective cover bag making machine for a trolley case, comprising a frame, characterized in that: The frame is provided with an unwinding device for placing a roll of non-woven fabric, a folding device for folding the non-woven fabric, a punching device for punching holes in the non-woven fabric, a patch device for arranging a connecting piece on the non-woven fabric, a connecting piece positioning device for fixing the free end position of the connecting piece, a bag folding device for folding the non-woven fabric in half and folding the bottom, a color code positioning device for confirming the position of the non-woven fabric, a protective cover forming device, and a trimming and bagging device. The patch device includes a feeding mechanism for placing a connecting piece roll, a second feeding mechanism for placing a Velcro roll, a bonding mechanism for bonding the Velcro and the connecting piece together, a transfer mechanism for transferring the cut connecting piece to the non-woven fabric, and an ultrasonic heat sealing mechanism for heat-sealing the two. The connecting piece positioning device includes a second horizontal feeding mechanism provided on the frame The invention relates to a bonding mechanism comprising bonding vertical plates respectively arranged on both sides of the frame, an active bonding roller, a driven bonding roller and a cutter arranged horizontally between the bonding vertical plates, the active bonding roller being linked to a first driving source arranged on one side of the bonding vertical plate, the driven bonding roller being arranged above the active bonding roller, and mounting blocks being sleeved on both sides thereof, a slide groove for placing the mounting block and a first cylinder for driving the mounting block to move along the slide groove being provided on the bonding vertical plate, slide rail slider assemblies being provided at both ends of the cutter for mounting it on the bonding vertical plate, and a support frame for merging Velcro and connecting sheet being arranged on the side of the bonding vertical plate facing the material discharge mechanism.

2. The protective cover bag making machine for a suitcase according to claim 1, characterized in that: The folding device includes a first cross bar arranged on a frame, folding rollers symmetrically suspended at both ends of the first cross bar, and a folding assembly symmetrically passed through both ends of the first cross bar. The folding assembly includes a folding plug plate, a plug plate fixing rod with one end movably connected to the folding plug plate, and a plug plate position adjustment member that hangs the plug plate fixing rod on the first cross bar.

3. The protective cover bag making machine for a suitcase according to claim 1, characterized in that: The punching device comprises two feeding pressing plates spaced apart on a frame, a feeding gap is arranged inside the feeding pressing plates, and a punching assembly and a contoured cavity for the punching assembly to pass through are arranged on the feeding pressing plates.

4. The protective cover bag making machine for a suitcase according to claim 1, characterized in that: The bag folding device includes a first flanging mechanism for changing the transport direction of the non-woven fabric, a triangular pyramid bag folding device for folding the non-woven fabric after the direction is changed, and a plugging plate mechanism for flattening the bottom of the non-woven fabric after the folding. A second flanging mechanism is provided between the triangular pyramid bag folding device and the plugging plate mechanism to change the transport direction of the non-woven fabric again.

5. The protective cover bag making machine for a suitcase according to claim 1, characterized in that: The protective cover forming device includes a bottom sealing mechanism, an indentation mechanism and a bottom punching mechanism. The bottom sealing mechanism includes a bottom sealing mold and a position adjustment mechanism that can adjust the relative position of the bottom sealing mold on the frame. The indentation mechanism includes an indentation frame, a guide rod arranged between the indentation frames, a third slider inserted into the guide rod and a pressure wheel frame movably installed on the guide rod via the third slider. The bottom punching mechanism includes a bottom punching mold and a second position adjustment mechanism arranged at the bottom of the bottom punching mold.

6. The protective cover bag making machine for a suitcase according to claim 1, characterized in that: The trimming and bagging device comprises a first cutter and a second cutter which are sequentially mounted on a frame, and a support plate for placing a finished product protective cover is provided on a side of the second cutter away from the first cutter.

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