TWM549697U - Double folding machine - Google Patents

Description

Double folding machine

The present invention relates to a folding bag machine, especially a double folding machine.

At present, plastic bags such as garbage bags are mostly sold in the form of products wound on a shaft tube, so that plastic bags of larger size and width can also be sold as a product type wound on a shaft tube. The plastic bag of the larger size and width specification is obtained by folding the long strip bag substrate in half by a folding machine to reduce the width by half, and then winding the folded bag substrate on the shaft tube by the bag machine. .

In the foregoing, the composition of the existing folding bag machine is mainly provided with a conveying device, a heat sealing wire forming device, a folding device and a tearing wire forming device on the machine base, and a feeding device is arranged on the side of the machine base. The control device, whereby the roll of the material substrate placed on the feeding device can output the material of the material of the material, and under the conveyance of the conveying device, the heat sealing line forming device sequentially heats the material of the material base Forming a heat seal line, a folding process of the folding device on the base material of the bag, and a forming step of applying a tear line of the bag to the bag base material after the folding of the folded line forming device.

However, the existing folding bag machine only has the function of single-folding the plastic bag product, and the plastic bag product with widened length is difficult to be folded to the width of the shaft tube suitable for the bag-making machine, so that the existing bag-making machine cannot be applied, and It needs to be carried out by a special special bag machine. On the other hand, the product width of the widened plastic bag product is still too large after a single fold, which is not conducive to product sales.

The main purpose of the present invention is to provide a double-folding machine which solves the problem that the existing single-fold folding bag folding machine is difficult to be used for folding a wide-width plastic bag product to a shaft tube width suitable for a roll bag device.

In order to achieve the foregoing, the double-folding machine proposed by the present invention comprises: a base, the opposite sides of which are an input side and an output side, respectively, the base has a carrying platform, and the carrying platform is on the input side Between the input side and the folding bag area, there is a bag substrate introduction area, and the folding bag area of the carrying table is provided with a support frame; a control device is attached Provided on the side of the base; a feeding device is disposed outside the input side of the base, the feeding device comprises a feeding frame and a bag substrate conveying assembly, wherein the feeding frame is configured to provide an assembly to be folded a bag substrate conveying assembly, the bag substrate conveying assembly is disposed on the feeding frame and controlled by the control device for conveying the bag substrate of the bag substrate roll; a conveying device, the device is installed The conveying device comprises two conveying shaft rollers and a driving mechanism, wherein the two conveying shaft rollers are pivotally arranged in parallel on the supporting frame, and the driving mechanism is mounted on the supporting frame and connected to the supporting frame a conveying shaft roller, the driving mechanism package being controlled by the control device; a heat sealing line forming device is disposed on the loading platform and located at a position adjacent to the folding bag area of the bag substrate introduction area, the heat sealing line forming device comprises a heat sealing tool and a tool driving mechanism, the tool The driving mechanism is controlled by the control device, and can drive the heat sealing tool to heat-form the heat sealing line at a position of the length of the bag substrate; a first folding device is disposed on the supporting frame facing the output a first side folding device comprising a first pair of folding guide plates and a first clamping roller shaft set, the first pair of folding guide plates comprising a first top edge and two ends respectively from the first top edge a first curved guiding edge extending downwardly, the bottom ends of the two first guiding guiding edges are connected to form a first tip to form an inverted triangular plate body, and the first top edge of the first pair of folding guiding plates Parallelly disposed under the two conveying shaft rollers of the conveying device, and the first pair of folding guide plates The input side is inclined from top to bottom toward the output side, and the first nip roller is assembled at a middle lower portion of the first pair of flaps and perpendicular to the two conveying shaft rollers of the conveying device; a two-folding device is disposed on a side of the support frame facing the output side, and is located below the first clamping roller set of the first folding device, and the second folding device comprises a second pair of folding guides and a a second clamping roller set, the second pair of folding guides includes a second top edge and two second bending guiding edges respectively extending downward from opposite ends of the second top edge, the second bending guiding The bottom end is connected to form a second tip to form an inverted triangular plate body, the second top edge is parallel to the first clamping roller axle set, and the second pair of folding guide plates are inclined from top to bottom, the second The nip roller shaft is assembled at a lower middle portion of the second pair of flaps and perpendicular to the second top edge of the second pair of flaps; and a tear line forming device is disposed on the output side of the frame. The tear line forming device comprises a conveyor roller set, a linear cutter and all knife drive assemblies, a feeding roller set is disposed on the carrying platform, the linear cutter is disposed on the carrying platform of the base, and the cutter driving assembly is installed in the base and controlled by the control device, A cutter drive assembly connects the linear cutter.

By pre-expanding the double-folding machine, it mainly uses the side control device and the feeding device of the machine base, and the conveying device, the heat sealing wire forming device and the tearing wire forming device are installed on the machine base, and the heat sealing line is installed. A first folding device and a second folding device are disposed between the forming device and the tear line forming device, so that the material substrate output from the feeding device is transported through the conveying device, and the heat sealing wire forming device fixed the hot pressing of the material of the material base Forming a heat seal line, the material of the material bag is continuously guided by the first pair of folding guides of the first folding device, and the second pair of folding guides of the second folding device are folded in half, and then the double pair is formed by the tearing line forming device The folding bag substrate is further subjected to a forming step of the bag tear line, thereby enabling the creation of the double-folding machine of the present invention to reduce the width of the bag substrate having a larger width by two folds, so that It is suitable for winding on a shaft tube of a certain length in the roll bag device or the bag changer.

1‧‧‧Double folding machine

2‧‧‧Roller changing device

3‧‧‧material bag substrate roll

3A‧‧‧ bag base

3B‧‧‧ shaft tube

10‧‧‧ machine base

11‧‧‧Loading station

12‧‧‧Folding area

13‧‧‧Bag substrate introduction area

14‧‧‧ leveling components

15‧‧‧Support frame

20‧‧‧Control device

30‧‧‧Feeding device

31‧‧‧Feeding rack

311‧‧‧ ‧ body

312‧‧‧Support shaft

32‧‧‧Bag substrate conveying assembly

321‧‧‧Feed roller

322‧‧‧Feed drive motor

323‧‧‧Feed drive assembly

324‧‧‧Shaft roller adjustment assembly

33‧‧‧Auxiliary shaft roller

34‧‧‧Upper guide roller

35‧‧‧Limited and broken material detector

40‧‧‧Conveyor

41‧‧‧Transport roller

42‧‧‧ drive mechanism

421‧‧‧Drive motor

422‧‧‧Transmission components

50‧‧‧Heat seal line forming device

51‧‧‧Heat seal cutter

511‧‧‧Upper heat sealing knife

512‧‧‧Under heat sealing knife

52‧‧‧Tool drive mechanism

60‧‧‧First folding device

61‧‧‧First pair of flaps

611‧‧‧ first top side

612‧‧‧First bend guide edge

613‧‧‧ first tip

62‧‧‧First clamping roller set

70‧‧‧Second folding device

71‧‧‧Second pair of flaps

711‧‧‧second top side

712‧‧‧Second bend leading edge

713‧‧‧second tip

72‧‧‧Second clamping roller set

80‧‧‧Tear line forming device

81‧‧‧Conveyor roller set

82‧‧‧Line cutter

83‧‧‧Cutter drive assembly

1 is a perspective view of a preferred embodiment of a preferred embodiment of the dual double folding machine.

FIG. 2 is a perspective view showing another perspective view of a preferred embodiment of the double-folding machine shown in FIG. 1. FIG.

3 is a perspective view showing another perspective of a preferred embodiment of the double-folding machine shown in FIG. 1.

4 is a plan view showing the state of use of the preferred embodiment of the double-folding machine shown in FIGS. 1 to 3.

FIG. 5 is a plan view showing a front view of a preferred embodiment of the double-folding machine shown in FIGS. 1 to 3.

Figure 6 is a plan view showing the state of the rear view of the preferred embodiment of the double-folding machine shown in Figures 1 to 3.

Figure 7 is a reference view of the state of use of the first folding device and the second folding device in the preferred embodiment of the double-folding machine shown in Figures 1 to 3 to produce a second fold when the bag base passes.

Figure 8 is a reference view of the state of use of the preferred embodiment of the dual double folding machine in combination with the roll bag device.

FIG. 9 is a top view of a preferred embodiment of the dual double-folding machine of FIG. 8 in combination with a roll-up device.

FIG. 10 is a front view of a preferred embodiment of the dual double folding machine of FIG. 8 in combination with a roll bag device.

As shown in FIG. 1 to FIG. 3, a preferred embodiment of the double folding machine of the present invention is disclosed. As can be seen from the drawings, the double folding machine 1 comprises a base 10, a control device 20 and a feeding device. 30. A conveyor 40, a heat seal line forming device 50, a first folding device 60, a second folding device 70, and a tear line forming device 80.

As shown in FIG. 1 to FIG. 6 , the top of the base 10 has a loading platform 11 . The opposite sides of the base 10 are respectively an input side and an output side. The loading platform 11 has an input side and an output side. A folded bag area 12, and a bag substrate introduction area 13 between the input side and the folded bag area 12. The bearing The loading platform 11 can also be provided with a flattening assembly 14 in the bag substrate introduction area 13, the leveling assembly 14 includes at least one flat shaft roller, and the folding pocket 12 of the loading table 11 is provided with a support frame 15 .

As shown in FIG. 1 and FIG. 2, the control device 20 is disposed on the outer side of the base 10. The control device 20 includes a display screen and a plurality of control keys.

As shown in FIG. 1 to FIG. 6 , the feeding device 30 is disposed on the outer side of the input side of the base 10 , and the feeding device 30 includes a feeding frame 31 and a bag substrate conveying assembly 32 , and the feeding frame 31 is used. In the preferred embodiment, the feed rack 31 includes a frame body 311 and a support shaft 312. The support shaft 312 is rotatably mounted on the frame body 311. The support shaft 312 is used to carry a roll 3 of the bag substrate to be folded. The bag substrate transport assembly 32 is mounted on the feed rack 31. The bag substrate transport assembly 32 includes two feed shaft rollers 321, a feed drive motor 322, and a feed drive assembly 323. The two feed shaft rollers The 321 series is parallel to the feeding frame 31 and parallel to the supporting shaft 312. The feeding drive motor 322 is mounted on the feeding frame 31. The feeding transmission component 323 can be a sprocket set or the like. The transmission assembly is coupled between the two feed shaft rollers 321 and the feed drive motor 322. The feed drive motor 322 is electrically connected to the control device 20, and the feed drive motor 322 can be controlled and driven via the feed transmission assembly 323. The two feed shaft rollers 321 are rotated to grip the bag substrate 3A that conveys the roll 3 of the bag substrate.

As shown in FIG. 1 to FIG. 6 , in the preferred embodiment, in the two feeding shaft rollers 321 of the bag substrate conveying assembly 32, a feeding shaft roller 321 is pivotally disposed on the feeding frame 31. The other feeding shaft roller 321 is assembled on the feeding frame 31 in combination with a shaft roller adjusting component 324, and the spacing between the two feeding shaft rollers 321 is adjusted through the shaft roller adjusting assembly 324, so that the two feeding shaft rollers 321 can be clamped. Holding the carrier bag substrate 3A.

As shown in FIG. 1 to FIG. 3, in the preferred embodiment, the feeding device 30 further includes a plurality of auxiliary shaft rollers 33. The plurality of auxiliary shaft rollers 33 are distributed on the feeding frame 31. The auxiliary shaft rollers are disposed. 33 is parallel to the support shaft 312. The two feeding shaft rollers 321 are juxtaposed in parallel in a horizontal plane, and the feeding frame 31 is An upper guide shaft roller 34 is further disposed above the two feed shaft rollers 321 , and the upper guide shaft roller 34 is parallel to the two feed shaft rollers 321 .

As shown in FIG. 2, in the preferred embodiment, the feeding frame 31 of the feeding device 30 can be disposed at least below the bag substrate conveying assembly 32 with at least one material shortage and break detector 35. The material shortage and break detector 35 is electrically connected to the control device 20 for detecting whether the bag substrate 3A of the bag substrate roll 3 is conveyed or not, or the bag substrate 3A is broken.

As shown in FIGS. 1 to 3, the conveying device 40 is mounted on the support frame 15 of the stage 11 of the base 10. The conveying device 40 includes two conveying shaft rollers 41 and a driving mechanism 42. The two conveying shaft rollers 41 are pivotally arranged in parallel on the support frame 15. The driving mechanism 42 is a support frame mounted on the loading platform 11. The drive mechanism 42 includes a drive motor 421 and a transmission assembly 422. The transmission assembly 422 can be a gear train assembly such as a sprocket set, and is coupled between the two transfer shaft rollers 41 and the drive motor 421, and The drive motor 421 is electrically connected to the control device 20. In the preferred embodiment, the two conveyor shaft rollers 41 are arranged in parallel in the upper and lower directions.

As shown in FIG. 1 to FIG. 3, the heat seal line forming device 50 is mounted on the loading table 11 at a position adjacent to the pocket portion 12 of the bag substrate introduction area 13. In the preferred embodiment, The heat seal line forming device 50 is disposed at a side of the support frame 15 facing the one side of the bag substrate introduction area 13. The heat seal line forming device 50 includes a heat seal cutter 51 and a cutter drive mechanism 52. The sealing tool 51 includes an upper heat sealing knife 511 and a lower heat sealing knife 512. The upper heat sealing knife 511 and the lower heat sealing knife 512 are disposed opposite to each other. The upper heat sealing knife 511 can be vertically displaced. The cutter driving mechanism 52 is mounted. The upper heat sealing blade 511 is coupled to the upper heat sealing blade 511 and can be driven to move up and down relative to the lower heat sealing blade 512. The tool driving mechanism 52 is electrically connected to the control device 20 for The heat seal line is thermoformed at a position of a certain length of the bag base material 3A, and the predetermined length is determined according to the speed at which the upper heat seal blade 511 moves up and down and the conveyance speed of the bag base material 3A. In the preferred embodiment, the tool drive mechanism 52 includes a tool drive motor and a tool drive assembly. The tool drive motor is electrically connected to the control device 20, and the tool drive set The piece is connected between the cutter drive motor and the upper heat seal knife 511, so that the cutter drive motor drives the upper heat seal knife 511 to move up and down via the cutter drive assembly.

As shown in FIG. 1 , FIG. 2 , and FIG. 4 to FIG. 7 , the first folding device 60 is mounted on the side of the support frame 11 facing the output side, and the first folding device 60 is A first pair of folding guide plates 61 and a first clamping roller shaft set 62 are formed. The first pair of folding guide plates 61 are an inverted triangular plate body, and the first pair of folding guide plates 61 are connected to the input side of the base 10 The output side is inclined from the top to the bottom. The first pair of flaps 61 includes a first top edge 611, two first bend guide edges 612, and a first tip 613. The first top edge 611 is located at the first a pair of folding guides 61 are located at the top of the two conveying shafts 41 of the conveying device 40, and the two first bending guiding edges 612 are respectively extended downward from opposite ends of the first top side 611 to form the same. The first tip 613. The first nip roller set 62 is disposed under the first pair of folding guides 61. The first nip roller set 62 includes two adjacent parallel roller shafts.

As shown in FIG. 1 , FIG. 2 , and FIG. 4 to FIG. 7 , the second folding device 70 is mounted on one side of the support frame 11 facing the output side, and the second folding device 70 is 70 Located below the first clamping roller set 62 of the first folding device 60, the second folding device 70 includes a second pair of folding guides 71 and a second clamping roller set 72, the second pair of folding guides The plate 71 is disposed above the folded bag area 12 of the loading table 11 and located below the first pair of folding guide plates 61. The second pair of folding guide plates 71 is an inverted triangular plate body, and the second pair of folding guide plates The 71 is inclined from the top to the bottom of the base 10, and the second pair of flaps 71 includes a second top edge 711, two second bending guide edges 712, and a second tip 713, the second The top edge 711 is located at the top of the second pair of folding guides 71 and parallel to the first clamping roller shaft set 62. The two second bending guiding edges 712 extend downward from the two ends of the second top edge 711 respectively. The connection forms the second tip 713. The second clamping roller shaft set 72 is disposed under the second pair of folding guide plates 71. The second clamping roller shaft set 72 includes two adjacent parallel roller shafts.

As shown in FIG. 1 to FIG. 4, the tear line forming device 80 is disposed on the output side of the base 10 and is controlled by the control device 20. The tear line forming device 80 includes a transport roller set 81 and a Linear The cutter 82 and all the knife drive assemblies 83, the transport roller set 81 includes two transport rollers arranged side by side, the linear cutter 82 being movably disposed up and down on the carrier 11 of the base 10, the cutter drive assembly The drive unit 83 includes a drive motor and a drive set. The drive motor is electrically connected to the control device 20. The drive set is coupled between the drive motor and the linear cutter 82. For driving the linear cutter 82 to move up and down.

As shown in FIG. 1 to FIG. 3 and FIG. 5 to FIG. 7 , with respect to the use case of the novel double-folding machine, the roll of the substrate substrate 3 to be stacked is mounted on the support shaft 312 of the feeding frame 31. The bag substrate 3A on the roll substrate roll 3 is conveyed by the bag substrate transport assembly 32, which is leveled by the leveling assembly 14 of the bag substrate introduction area 13 of the stage 11 The upper heat sealing blade 511 and the lower heat sealing blade 512 of the wire forming device 50 are heat sealed. The feeding frame 31 can also detect whether the bag substrate 3A is out of material and breaks the material by using the material shortage and break detector 35. If there is a shortage of material and a material break, the control device 20 sends a signal to the control. Device 20 stops the double folding machine. During the process of heat sealing the wire forming device 50 by the bag substrate 3A, the conveying speed of the bag substrate 3A is controlled, and the upper and lower movements of the upper heat sealing blade 511 driven by the heat sealing wire forming device 50 are The bag substrate 3A is hot pressed at a position of a certain length to form a heat seal line. The bag base material 3A which completes the fixed length forming heat seal line is conveyed to the first folding device 60 by the two conveying shaft rollers 41 of the conveying device 40.

As shown in FIG. 1 to FIG. 3 and FIG. 5 to FIG. 7 , when the bag substrate 3A passes through the first folding device 60, the bag substrate 3A is guided by the inclined inverted triangular first pair of folding guides 61. The bag substrate 3A is folded down along the two first bending guide edges 612, and the first folded bag substrate 3A is successively passed through the first pinch roller set 62 and then transported to the second folding device. 70, the first folded sheet material base material 3A is guided by the inclined inverted triangle second pair of folding guide plates 71, so that the first folded sheet material base material 3A is further along the second second bending guide edge. 712 performs a second downward folding step, and the second folded bag substrate 3A is successively passed through the second pinch roller set 72 and then transported to the tear line forming device 80. The linear cutter 82 driven in the tear line forming device 80 forms a tear line at a predetermined position on the side of the heat seal line of the double-folded bag base material 3A, and then the material is folded twice. The bag substrate 3A is output.

As shown in FIG. 8 to FIG. 10, the embodiment of the double-folding machine connecting the roll change device 2 is disclosed. The roll change device 2 is disposed on the outer side of the output side of the stand 10, and the roll change The pipe device 2 comprises a casing and a pipe changing mechanism installed in the casing, and a shaft tube rotating mechanism capable of automatically and automatically performing shaft tube positioning, driving the shaft tube rotation and completing the roll bag After the shaft tube is detached, the bag changing device 2 is used for winding the bag base material 3A after the completion of the fixed length forming heat sealing line, the two folding operation, and the tearing line forming step on a shaft tube. And after the bag substrate 3A is wound around the shaft tube for a certain length, it is divided from the tear line at a predetermined position of the bag substrate 3A, and the subsequent bag substrate 3A is replaced and wound on the other shaft tube. The product in which the roll bag on the shaft tube has been completed is discharged from the roll change device 2, and the operation of replacing the shaft tube with the roll bag is continuously performed in this manner.

It can be seen from the above-mentioned double-folding machine structure and its use description that the double-folding machine of the present invention mainly uses the side seat side installation control device and the feeding device, and the conveying device, the heat sealing line forming device and the tearing are installed on the machine base. a wire forming device, and a first folding device and a second folding device are disposed between the heat sealing wire forming device and the tearing wire forming device, so that the material substrate output from the feeding device is conveyed by the conveying device, and the heat sealing wire forming device Forming a heat sealing line by the fixed length of the material of the bag base, the material of the bag base is guided by the first pair of folding guides of the first folding device, and the second pair of folding plates of the second folding device are guided and folded. Then, the forming process of the double-folded bag substrate is further subjected to a forming process of the bag tear line through the tear line forming device, thereby enabling the creation of the double-folding machine of the present invention to pass the larger bag substrate The width is reduced after double folding, so that it can be applied to a shaft tube of a certain length in an existing roll bag device or a roll changer.

1‧‧‧Double folding machine

10‧‧‧ machine base

11‧‧‧Loading station

14‧‧‧ leveling components

30‧‧‧Feeding device

31‧‧‧Feeding rack

311‧‧‧ ‧ body

312‧‧‧Support shaft

32‧‧‧Bag substrate conveying assembly

321‧‧‧Feed roller

322‧‧‧Feed drive motor

324‧‧‧Shaft roller adjustment assembly

40‧‧‧Conveyor

41‧‧‧Transport roller

42‧‧‧ drive mechanism

421‧‧‧Drive motor

50‧‧‧Heat seal line forming device

60‧‧‧First folding device

61‧‧‧First pair of flaps

62‧‧‧First clamping roller set

70‧‧‧Second folding device

71‧‧‧Second pair of flaps

72‧‧‧Second clamping roller set

80‧‧‧Tear line forming device

81‧‧‧Conveyor roller set

82‧‧‧Line cutter

83‧‧‧Cutter drive assembly

Claims (10)

A double folding machine comprises: a machine base, the opposite sides of which are respectively an input side and an output side, the machine base has a carrying platform, and the carrying platform has a fold between the input side and the output side a bag area, between the input side and the folding bag area, a bag substrate introduction area, the folding bag area of the carrying table is provided with a support frame; a control device is installed on the side of the machine frame; The feeding device is disposed outside the input side of the machine base, and the feeding device comprises a feeding frame and a bag substrate conveying assembly, wherein the feeding frame is configured to assemble a roll of the material substrate to be folded, the bag a substrate conveying assembly is disposed on the feeding frame and controlled by the control device for conveying a bag substrate of the roll of the bag substrate; a conveying device is mounted on the frame, the conveying device The utility model comprises a second conveying shaft roller and a driving mechanism, wherein the two conveying shaft rollers are parallel and juxtaposed on the supporting frame, the driving mechanism is mounted on the supporting frame and connects the two conveying shaft rollers, the driving mechanism package Controlled by the control device; a heat sealing line forming device The heat seal line forming device includes a heat seal cutter and a cutter drive mechanism, and the cutter drive mechanism is controlled by the control device, and is located at a position of the bag substrate introduction area adjacent to the bag pocket region, and The heat sealing cutter can be driven to form a heat seal line at a position of the length of the material of the material of the bag base; a first folding device is disposed on a side of the support frame facing the output side, the first folding device The first pair of folding guides and the first pair of folding rollers comprise a first top edge and two first bending guides respectively extending downward from opposite ends of the first top edge The bottom ends of the two first bending guide sides are connected to form a first tip to form an inverted triangular plate body, and the first top edge of the first pair of folding guide plates is disposed in parallel to the two conveyings of the conveying device a lower side of the shaft roller, and the first pair of flaps are inclined from the input side toward the output side from the top to the bottom, and the first nip roller is assembled at a lower middle of the first pair of flaps and vertically The two conveying shaft rollers of the conveying device; a second folding device is disposed on a side of the support frame facing the output side, and is located below the first clamping roller set of the first folding device, and the second folding device comprises a second pair of folding guides a second folding guide shaft comprising a second top edge and a second curved guiding edge extending downward from opposite ends of the second top edge, the second bending The bottom end of the folding guide is connected to form a second tip to form an inverted triangular plate body, the second top edge is parallel to the first clamping roller axle set, and the second pair of folding guide plates are inclined from top to bottom. The second nip roller shaft is assembled at a middle lower portion of the second pair of folding guide plates and perpendicular to the second top edge of the second pair of folding guide plates; and a tear line forming device is disposed on the machine base On the output side, the tear line forming device comprises a transport roller set, a linear cutter and all the knife drive assemblies, the transport roller set is disposed on the support platform, and the linear cutter is arranged to be movable up and down on the base The cutter drive assembly is mounted in the base and controlled by the control device The cutter drive assembly connected to the linear cutter. The double-folding machine according to claim 1, wherein the feeding frame of the feeding device comprises a frame body and a support shaft, the support shaft is rotatably mounted on the frame body, and the bag substrate conveying assembly Mounted on the feeding frame, the bag substrate conveying assembly comprises two feeding shaft rollers, a feeding driving motor and a feeding transmission assembly, and one of the two feeding shaft rollers is fixed at a fixed point The feeding frame, the other feeding roller roller is combined with a shaft roller adjusting component, and the two feeding roller rollers are parallel and parallel to the supporting shaft, and the feeding drive motor is mounted on the feeding frame. The feed transmission assembly is a train transmission assembly and is coupled between the two feed shaft rollers and the feed drive motor, and the feed drive motor is electrically connected to the control device. The double folding machine of claim 2, wherein the feeding frame of the feeding device is provided with at least one material shortage and break detector under the bag substrate conveying assembly, the material shortage and break detector The control device is electrically connected. The double-folding machine according to any one of claims 1 to 3, wherein the heat-sealing cutter of the heat seal line forming device comprises an upper heat sealing knife and a lower heat sealing knife, the upper heat sealing knife and the lower heat Sealing knife The tool drive mechanism includes a tool drive motor and a tool drive assembly. The tool drive motor is electrically connected to the control device, and the tool drive assembly is coupled between the tool drive motor and the upper heat seal knife. The cutter drive motor drives the upper heat seal knife up and down via the cutter drive assembly. The double-folding machine according to any one of claims 1 to 3, wherein the conveying roller set of the tear line forming device comprises two conveying rollers arranged side by side, the cutter driving assembly comprising a driving motor and a transmission The driving motor is electrically connected to the control device, and the transmission group is connected between the driving motor and the linear cutter for driving the linear knife to move up and down. The double-folding machine according to any one of claims 1 to 3, wherein the heat-sealing cutter of the heat seal line forming device comprises an upper heat sealing knife and a lower heat sealing knife, the upper heat sealing knife and the lower heat The cutter driving mechanism comprises a cutter drive motor and a cutter drive assembly, wherein the cutter drive motor is electrically connected to the control device, and the cutter drive assembly is connected between the cutter drive motor and the upper heat seal cutter The cutter drive motor drives the upper heat seal knife to move up and down via the cutter drive assembly; the transport roller set of the tear line forming device comprises two transport rollers arranged side by side, the cutter drive assembly comprising a drive motor and a transmission group. The driving motor is electrically connected to the control device, and the transmission group is connected between the driving motor and the linear cutter for driving the linear knife to move up and down. The double-folding machine according to claim 6, wherein the driving mechanism of the conveying device comprises a driving motor and a transmission assembly, the transmission assembly is a wheel train transmission assembly, and the two conveying shaft rollers and the driving motor are connected And the driving motor is electrically connected to the control device. The double-folding machine according to claim 6, wherein the loading platform is provided with a leveling assembly in the bag substrate introduction zone, and the leveling component comprises at least one flat shaft roller. The double folding machine of claim 6, wherein the first nip roller set of the first folding device comprises two adjacent juxtaposed rollers; the second nip roller set comprises two adjacent juxtaposed Roller shaft. The double-folding machine according to claim 6, wherein the loading platform is provided with a flattening assembly in the material introduction substrate of the bag, the flattening assembly comprising at least one flat shaft roller; the first folding device The first nip roller set includes two adjacent juxtaposed rollers; the second nip roller set includes two adjacent juxtaposed rollers; the drive mechanism of the conveying device includes a drive motor and a transmission assembly The transmission component is a train transmission assembly and is coupled between the two conveyor shaft rollers and the drive motor, and the drive motor is electrically connected to the control device.