CN216330441U - A prevent fold system bag machine for zip fastener bag heat-seal - Google Patents

Abstract

The utility model discloses a crease-resistant bag making machine for heat sealing of zipper bags, and particularly relates to the technical field of plastic bag manufacturing. According to the fold-preventing bag making machine for heat sealing of the zipper bags, after the plastic film is folded in the bottom folding mechanism and the shape of the bottom is shaped, the two sides of the plastic film are subjected to heat sealing and cutting, so that the heat sealing of the bottom of the plastic film is avoided, the structure of the bag body is strengthened, and the damage and waste in the using process are reduced.

Description

A prevent fold system bag machine for zip fastener bag heat-seal

Technical Field

The utility model relates to the technical field of plastic bag manufacturing, in particular to a crease-resistant bag making machine for heat sealing of zipper bags.

Background

The bag making machine is a special device for making packaging bags, and is widely used for producing packaging bags made of various plastic materials and the like. The double-layer plastic films are respectively guided and conveyed, the upper film and the lower film are overlapped at proper positions, the overlapped films form a plurality of small bag integrated structures after longitudinal and transverse heat sealing, and finally, the small bags are cut and formed.

Traditional heat-sealing machine constructs generally is many times heat-seal, and to its bottom heat-seal back, if when the bag body needs the splendid attire heavy object, the position of the heat-seal of bag body bottom peeled off each other easily, and then made the plastic bag damage, caused the waste, traditional heat-sealing machine constructs can only a pouch of heat-seal at every turn when heat-sealing, and production efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a crease-resistant bag making machine for heat sealing of zipper bags, which can effectively solve the problems in the background art.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a crease-resistant bag making machine for heat sealing of zipper bags comprises a base, eight support legs are fixedly arranged at the upper end of the base, an operating table is fixedly arranged at the upper ends of the eight support legs together, the front part of the upper end of the base is fixedly provided with a first bearing seat and a second bearing seat, the operating platform is positioned between the first bearing seat and the second bearing seat, the middle parts of the surfaces, close to each other, of the first bearing seat and the second bearing seat are respectively provided with a mounting groove, the upper ends of the first bearing seat and the second bearing seat are jointly and fixedly provided with a circulating cutting mechanism, a driving mechanism is fixedly arranged in the middle of the upper end of the base, a V-shaped table, a bottom folding mechanism and two guide rollers are fixedly arranged at the rear part of the upper end of the operating platform, the two guide rollers are both vertical to the operating platform, the bottom folding mechanism is positioned between the V-shaped table and the two guide rollers, and the circulating cutting mechanism comprises a cutting sealing mechanism.

Preferably, circulation cutting mechanism includes servo motor, servo motor fixed mounting is in second bearing seat upper end, the servo motor output has the rotary rod through shaft joint fixed mounting, rotary rod surface middle part fixed mounting has the cam, the common fixed mounting in one side upper portion that first bearing seat and second bearing seat are close to each other has the layer board, the slide opening that link up from top to bottom is seted up at layer board upper end middle part, slidable mounting has the slide bar in the slide opening, slide bar upper end fixed mounting has the clamp plate, the clamp plate upper end is hugged closely together with the cam surface, common fixed mounting has reset spring between clamp plate and the layer board, the slide bar surface is located to the reset spring cover, the slide bar lower extreme is in the same place with cutting sealing mechanism fixed connection.

Preferably, the cutting sealing mechanism comprises a hot cutting knife, the left part and the right part of the upper end of the hot cutting knife are provided with limit holes which are communicated from top to bottom, two limit holes are internally and uniformly provided with limit rods, the lower ends of the limit rods are respectively and fixedly arranged on the bottom walls of the inner cavities of the two mounting grooves, the upper parts of the front ends and the upper parts of the rear ends of the hot cutting knife are fixedly provided with horizontal plates, two horizontal plates are respectively provided with two through holes which are communicated from top to bottom, four support rods are uniformly and slidably arranged in the through holes, the lower ends of the support rods are fixedly provided with heating plates by taking the hot cutting knife as a central line, two threaded springs are fixedly arranged between the heating plates and the horizontal plates, and the threaded springs are respectively sleeved on the outer surfaces of the four support rods.

Preferably, actuating mechanism includes first bearing platform and second bearing platform, first bearing platform and second bearing platform opposite face upper portion rotate jointly and install first pivot and second pivot, the second pivot is located first pivot directly over, the equal fixed mounting in middle part of first pivot and second pivot surface has first roller, first bearing platform upper end fixed mounting has constant speed alternating current motor, the equal fixed mounting of second pivot surface left part and constant speed alternating current motor output has the belt pulley, two the transmission belt is installed in the winding between the belt pulley.

Preferably, the V-shaped table comprises two clamping plates, the lower ends of the two clamping plates are fixedly mounted at the rear part of the upper end of the operating table, and two fastening plates are fixedly mounted between the two clamping plates together.

Preferably, the distance between the rear parts of the adjacent surfaces of the two clamping plates is greater than the distance between the front parts of the adjacent surfaces of the two clamping plates.

Preferably, roll over end mechanism and include the box, the equal fixed mounting in box intracavity left side wall middle part and right side wall middle part has the triangle lug, the equal fixed mounting in box intracavity left side wall and the equal fixed mounting in inner chamber right side wall four corners has first dead lever, eight the one end that box inner wall was kept away from to first dead lever inclines, eight to inner box inner chamber middle part respectively the equal fixed mounting in first dead lever surface middle part has the compression roller, the common fixed mounting respectively has the horizon bar, two is kept away from the one end at box lateral wall to four first dead levers at the anterior four first dead levers of box inner chamber and box inner chamber rear portion the both ends of horizon bar fixed mounting respectively has two second dead levers, eight the equal fixed mounting in second dead lever surface has the second roller.

Preferably, the two horizontal rods are located at the same horizontal height and are parallel to each other, and the four second fixing rods located at the same side are parallel to and closely attached to the upper end and the lower end of the triangular bump at the same side.

Compared with the prior art, the utility model has the following beneficial effects:

the bottom folding mechanism is additionally arranged, two plastic film inlets are formed in the bottom folding mechanism, after two single-layer plastics respectively enter the two inlets, the bottoms of the two plastic films are folded and pressed inwards by the two triangular lugs and the eight second rollers, then the bottoms of the two plastic films are pressed again by the V-shaped table and the driving mechanism, after the shape of the bottom is formed, the two sides of the plastic films are subjected to heat sealing and cutting, the heat sealing of the bottoms of the plastic films is avoided, the structure of the bag body is strengthened, the damage waste in the using process is reduced, two plastic bags can be produced simultaneously by cutting each time through the two plastic film inlets, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic view showing the overall structure of a crease-resistant bag making machine for heat-sealing a zipper bag according to the present invention;

FIG. 2 is a schematic view of the overall structure of a circulation cutting mechanism of the crease-resistant bag making machine for heat sealing of zipper bags according to the present invention;

FIG. 3 is a schematic view of the overall structure of a cutting and sealing mechanism of a crease-resistant bag making machine for heat sealing of zipper bags according to the present invention;

FIG. 4 is a schematic diagram showing the overall structure of a driving mechanism of a crease-resistant bag making machine for heat sealing of zipper bags according to the present invention;

FIG. 5 is a schematic view of the overall structure of a V-shaped table of the crease-resistant bag making machine for heat sealing of zipper bags according to the present invention;

FIG. 6 is a schematic view of the whole structure of a bottom folding mechanism of the crease-resistant bag making machine for heat sealing of zipper bags according to the present invention;

FIG. 7 is a schematic view showing the operation principle of the bottom folding mechanism of the crease-resistant bag making machine for heat sealing of zipper bags according to the present invention.

In the figure: 1. a base; 2. a support leg; 3. an operation table; 4. a first load bearing seat; 5. a second load bearing seat; 6. a circular cutting mechanism; 61. a servo motor; 62. rotating the rod; 63. a cam; 64. pressing a plate; 65. a return spring; 66. a slide bar; 67. a support plate; 68. cutting the sealing mechanism; 681. a hot cutter; 682. a horizontal plate; 683. a stay bar; 684. a threaded spring; 685. a limiting hole; 686. a limiting rod; 687. heating plates; 688. a through hole; 69. a slide hole; 7. a drive mechanism; 71. a first bearing table; 72. a constant speed AC motor; 73. a second bearing table; 74. a first roller; 75. a drive belt; 76. a first rotating shaft; 77. a second rotating shaft; 78. a belt pulley; 8. a V-shaped table; 81. a fastening plate; 82. a clamping plate; 9. a bottom folding mechanism; 91. a box body; 92. a triangular bump; 93. a compression roller; 94. a horizontal bar; 95. a second roller; 96. a first fixing lever; 97. a second fixing bar; 10. a guide roller; 11. and (4) mounting the groove.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in figures 1-7, a crease-resistant bag making machine for heat sealing of zipper bags comprises a base 1, eight legs 2 are fixedly arranged at the upper end of the base 1, an operation table 3 is fixedly arranged at the upper ends of the eight legs 2 together, a first bearing seat 4 and a second bearing seat 5 are fixedly arranged at the front part of the upper end of the base 1, the operation table 3 is positioned between the first bearing seat 4 and the second bearing seat 5, mounting grooves 11 are respectively arranged at the middle parts of the surfaces, close to each other, of the first bearing seat 4 and the second bearing seat 5, a circular cutting mechanism 6 is fixedly arranged at the upper ends of the first bearing seat 4 and the second bearing seat 5 together, a driving mechanism 7 is fixedly arranged at the middle part of the upper end of the base 1, a V-shaped table 8, a bottom folding mechanism 9 and two guide rollers 10 are fixedly arranged at the rear part of the upper end of the operation table 3, the two guide rollers 10 are both vertical to the operation table 3, the bottom folding mechanism 9 is positioned between the V-shaped table 8 and the two guide rollers 10, the circular cutting mechanism 6 comprises a cutting sealing mechanism 68; the two guide rollers 10 are respectively composed of a fixed frame and two rollers, before the plastic film enters the bottom folding mechanism 9, the plastic film needs to pass through the two rollers, and after the two rollers are fixed by the fixed frame, the plastic film is wound between the two rollers, so that the plastic film is unfolded.

The circular cutting mechanism 6 comprises a servo motor 61, the servo motor 61 is fixedly arranged at the upper end of the second bearing seat 5, the output end of the servo motor 61 is fixedly provided with a rotating rod 62 through a coupling, the middle part of the outer surface of the rotating rod 62 is fixedly provided with a cam 63, the upper parts of the mutually close surfaces of the first bearing seat 4 and the second bearing seat 5 are jointly and fixedly provided with a supporting plate 67, the middle part of the upper end of the supporting plate 67 is provided with a vertically through sliding hole 69, a sliding rod 66 is arranged in the sliding hole 69 in a sliding manner, the upper end of the sliding rod 66 is fixedly provided with a pressing plate 64, the upper end of the pressing plate 64 is tightly attached to the outer surface of the cam 63, a return spring 65 is jointly and fixedly arranged between the pressing plate 64 and the supporting plate 67, the return spring 65 is sleeved on the outer surface of the sliding rod 66, and the lower end of the sliding rod 66 is fixedly connected with a cutting sealing mechanism 68; the cutting sealing mechanism 68 comprises a hot cutting knife 681, the left part and the right part of the upper end of the hot cutting knife 681 are respectively provided with a limiting hole 685 which is through up and down, limiting rods 686 are slidably mounted in the two limiting holes 685, the lower ends of the two limiting rods 686 are respectively and fixedly mounted on the bottom walls of the inner cavities of the two mounting grooves 11, horizontal plates 682 are respectively and fixedly mounted on the upper parts of the front end and the rear end of the hot cutting knife 681, two through holes 688 which are through up and down are respectively formed in the upper ends of the two horizontal plates 682, supporting rods 683 are respectively and slidably mounted in the four through holes 688, the lower ends of the four supporting rods 683 are respectively and fixedly mounted with a heating plate 687 by taking the hot cutting knife 681 as a group, two threaded springs 684 are respectively and fixedly mounted between the heating plate 687 and the horizontal plate which are positioned on the same side, and the four threaded springs 684 are respectively sleeved on the outer surfaces of the four supporting rods 683; after the servo motor 61 is electrified, the output end of the servo motor 61 drives the rotating rod 62 to rotate through the coupler, the rotating rod 62 drives the cam 63 to rotate after rotating, because the cam 63 is tightly attached to the pressing plate 64, when the bulge of the cam 63 rotates to the upper end of the pressing plate 64, the cam 62 moves up and down under the guiding action of the sliding rod 66 through the return spring 65 between the pressing plate 64 and the supporting plate 67, the lower end of the sliding rod 66 is fixedly connected with the hot cutting knife 681, when the sliding rod 66 moves up and down, the two horizontal plates 682 fixedly arranged at the upper part of the front end and the upper part of the rear end of the hot cutting knife 681 move up and down under the limitation of the four supporting rods 683, when the upper end of the operating platform 3 is reached, the two 687 stop moving the hot cutting knife 681 to move down continuously, at the moment, the hot cutting knife 681 moves down continuously and vertically under the limitation of the two limiting rods 686 and the four supporting rods 683, at the moment, the four thread springs 684 are compressed, the plastic film is then cut rapidly at its own high temperature with a hot cutting knife 681.

The driving mechanism 7 comprises a first bearing table 71 and a second bearing table 73, a first rotating shaft 76 and a second rotating shaft 77 are installed on the upper portions of the opposite surfaces of the first bearing table 71 and the second bearing table 73 in a rotating mode, the second rotating shaft 77 is located right above the first rotating shaft 76, first rollers 74 are fixedly installed in the middle of the outer surfaces of the first rotating shaft 76 and the second rotating shaft 77, a constant-speed alternating current motor 72 is fixedly installed at the upper end of the first bearing table 71, belt pulleys 78 are fixedly installed on the left portion of the outer surface of the second rotating shaft 77 and the output end of the constant-speed alternating current motor 72, and a transmission belt 75 is wound between the two belt pulleys 78; after the constant-speed alternating current motor 72 is powered on, the belt pulley 78 fixedly mounted at the left part of the outer surface of the second rotating shaft 77 and the output end of the constant-speed alternating current motor 72 rotates to drive the transmission belt 75 to rotate, so that the first rollers 74 fixedly mounted on the outer surfaces of the second rotating shaft 77 and the second rotating shaft 77 are driven to rotate, and the plastic film is moved forwards through the matching between the two first rollers 74.

The V-shaped table 8 comprises two clamping plates 82, the lower ends of the two clamping plates 82 are fixedly arranged at the rear part of the upper end of the operating table 3, and two fastening plates 81 are fixedly arranged between the two clamping plates 82; the distance between the rear parts of the opposite surfaces of the two holding plates 82 is greater than the distance between the front parts of the opposite surfaces of the two holding plates 82; two mounting plates 81 through two clamping plate 82 centre gripping fixed mounting at operation panel 3 upper end rear portion, two mounting plates 81 opposite face front portions are equipped with certain contained angle, make the distance of rear portion opposite face be greater than anteriorly, can be stereotyped the plastic film bottom after folding.

The bottom folding mechanism 9 comprises a box body 91, triangular lugs 92 are fixedly mounted in the middle of the left side wall and the middle of the right side wall in the cavity of the box body 91, first fixing rods 96 are fixedly mounted at four corners of the left side wall and the right side wall of the cavity of the box body 91, one ends, far away from the inner wall of the box body 91, of the eight first fixing rods 96 are respectively inclined towards the middle of the cavity of the inner box body 91, compression rollers 93 are fixedly mounted in the middle of the outer surfaces of the eight first fixing rods 96, horizontal rods 94 are respectively and fixedly mounted at the four first fixing rods 96 in the front of the cavity of the box body 91 and at the ends, far away from the side wall of the box body 91, of the four first fixing rods 96 in the rear of the cavity of the box body 91, two second fixing rods 97 are respectively and fixedly mounted at two ends of the horizontal rods 94, and second rollers 95 are respectively and fixedly mounted on the outer surfaces of the eight second fixing rods 97; the two horizontal rods 94 are positioned at the same horizontal height and are parallel to each other, and the four second fixing rods 97 positioned at the same side are respectively parallel to and closely attached to the upper end and the lower end of the triangular bump 92 at the same side; after the plastic film is put into the box body 91 from the rear end, the plastic film is folded to be tightly attached to the outer surface of the triangular bump 92, then the plastic film is pressed and driven by eight second rollers 95 fixedly installed at two ends of two horizontal rods 94, the rest part of the plastic film is guided and limited by eight compression rollers 93, and the plastic film enters the inner cavity of the V-shaped table 8 after coming out of the inner cavity of the box body 91 to be pressed for the second time.

It should be noted that, the present invention is an anti-wrinkle bag making machine for heat sealing of zipper bags, as shown in fig. 7, a plastic film is required to pass between two rollers arranged in a guide roller 10, after the two rollers are fixed by a fixing frame, the plastic film is wound between the two rollers to spread the plastic film, then the plastic film enters a box 91, after the plastic film is put in from the rear end of the box 91, the plastic film is folded to cling to the outer surface of a triangular bump 92, then the plastic film is pressed and transmitted by eight second rollers 95 fixedly arranged at two ends of two horizontal rods 94, the rest of the plastic film is guided and limited by eight press rollers 93, and after the plastic film comes out from the inner cavity of the box 91, the plastic film enters the inner cavity of a V-shaped table 8 to be pressed for the second time, two fastening plates 81 arranged in the V-shaped table 8 are fixedly arranged at the rear part of the upper end of an operation table 3 through two clamping plates 82, the front parts of the opposite surfaces of the two fastening plates 81 are provided with a certain included angle, so that the distance between the opposite surfaces of the rear part is larger than that of the front part, when a plastic film enters the plastic film, the bottom of the folded plastic film can be shaped, the plastic film is placed between the first rotating shaft 76 and the second rotating shaft 77, after the constant-speed alternating current motor 72 is electrified, the belt pulley 78 fixedly arranged at the left part of the outer surface of the second rotating shaft 77 and the output end of the constant-speed alternating current motor 72 rotates to drive the transmission belt 75 to rotate, further the first rollers 74 fixedly arranged at the outer surfaces of the second rotating shaft 77 and the second rotating shaft 77 rotate, the plastic film moves forwards through the matching between the two first rollers 74, the automatic movement of the plastic film is realized, then the double-layer plastic film moves to the position below the hot cutting knife 681 arranged in the circular cutting mechanism 6, the servo motor 61 drives the rotating rod 62 to rotate, the rotating rod 62 drives the cam 63 to rotate, because the cam 63 is tightly attached to the pressing plate 64, when the convex part of the cam 63 rotates to the upper end of the pressing plate 64, the return spring 65 between the pressing plate 64 and the supporting plate 67 moves up and down under the guiding action of the sliding rod 66, the lower end of the sliding rod 66 is fixedly connected with the hot cutting knife 681, the sliding rod 66 drives the two horizontal plates 682 fixedly arranged on the upper part of the front end and the upper part of the rear end of the hot cutting knife 681 to move up and down under the limitation of the four supporting rods 683 while moving up and down, when the upper end of the operating platform 3 is reached, the two heating plates 687 stop moving the hot cutting knife 681 to move down continuously, at the moment, the hot cutting knife 681 moves down continuously and vertically under the limitation of the two limiting rods 686 and the four supporting rods 683, at the moment, the four thread springs 684 are compressed, and then the hot cutting knife 681 divides the plastic film under the self high temperature, and the cycle is repeated.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (8)

1. The utility model provides a prevent fold system bag machine for zip fastener bag heat-seal, includes base (1), its characterized in that: the cutting machine is characterized in that eight supporting legs (2) are fixedly mounted at the upper end of the base (1), an operation table (3) is fixedly mounted at the upper ends of the eight supporting legs (2) jointly, a first bearing seat (4) and a second bearing seat (5) are fixedly mounted at the front portion of the upper end of the base (1), the operation table (3) is located between the first bearing seat (4) and the second bearing seat (5), mounting grooves (11) are formed in the middle of the side, close to each other, of the first bearing seat (4) and the second bearing seat (5), a circular cutting mechanism (6) is fixedly mounted at the upper ends of the first bearing seat (4) and the second bearing seat (5) jointly, a driving mechanism (7) is fixedly mounted at the middle of the upper end of the base (1), a V-shaped table (8), a bottom folding mechanism (9) and two guide rollers (10) are fixedly mounted at the rear portion of the upper end of the operation table (3), and the two guide rollers (10) are perpendicular to the operation table (3), the bottom folding mechanism (9) is positioned between the V-shaped table (8) and the two guide rollers (10), and the circulating cutting mechanism (6) comprises a cutting sealing mechanism (68).

2. The wrinkle-preventing bag making machine for heat-sealing a zipper bag according to claim 1, wherein: circulation cutting mechanism (6) include servo motor (61), servo motor (61) fixed mounting is in second bearing seat (5) upper end, servo motor (61) output has rotary rod (62) through shaft coupling fixed mounting, rotary rod (62) surface middle part fixed mounting has cam (63), the common fixed mounting in one side upper portion that first bearing seat (4) and second bearing seat (5) are close to each other has layer board (67), slide opening (69) that link up from top to bottom are seted up to layer board (67) upper end middle part, slidable mounting has slide bar (66) in slide opening (69), slide bar (66) upper end fixed mounting has clamp plate (64), clamp plate (64) upper end and cam (63) surface hug closely together, common fixed mounting has reset spring (65) between clamp plate (64) and layer board (67), the outer surface of the sliding rod (66) is sleeved with the return spring (65), and the lower end of the sliding rod (66) is fixedly connected with the cutting sealing mechanism (68).

3. The wrinkle-preventing bag making machine for heat-sealing a zipper bag according to claim 2, wherein: the cutting and sealing mechanism (68) comprises a hot cutting knife (681), the left part and the right part of the upper end of the hot cutting knife (681) are respectively provided with a limiting hole (685) which is communicated up and down, limiting rods (686) are respectively and slidably mounted in the limiting holes (685), the lower ends of the limiting rods (686) are respectively and fixedly mounted on the bottom walls of the inner cavities of the two mounting grooves (11), horizontal plates (682) are respectively and fixedly mounted on the upper part of the front end and the upper part of the rear end of the hot cutting knife (681), two through holes (688) which are communicated up and down are respectively formed in the upper ends of the two horizontal plates (682), supporting rods (683) are respectively and slidably mounted in the four through holes (688), the lower ends of the four supporting rods (683) are respectively and fixedly mounted with heating plates (687) by taking the hot cutting knife (681) as a group of every two central lines, and two thread springs (684) are respectively and fixedly mounted between the heating plates (687) and the horizontal plates (682) which are positioned on the same side, the four threaded springs (684) are respectively sleeved on the outer surfaces of the four support rods (683).

4. The wrinkle-preventing bag making machine for heat-sealing a zipper bag according to claim 1, wherein: actuating mechanism (7) are including first bearing platform (71) and second bearing platform (73), first bearing platform (71) and second bearing platform (73) opposite face upper portion rotate jointly and install first pivot (76) and second pivot (77), second pivot (77) are located first pivot (76) directly over, first pivot (76) and second pivot (77) surface middle part all fixed mounting have first roller (74), first bearing platform (71) upper end fixed mounting has constant speed alternating current motor (72), second pivot (77) surface left part and the equal fixed mounting of constant speed alternating current motor (72) output have belt pulley (78), two drive belt (75) are installed in the winding between belt pulley (78).

5. The wrinkle-preventing bag making machine for heat-sealing a zipper bag according to claim 1, wherein: v type platform (8) include two grip blocks (82), two equal fixed mounting in operation panel (3) upper end rear portion of grip block (82) lower extreme, two common fixed mounting has two mounting plates (81) between grip block (82).

6. The wrinkle-preventing bag making machine for heat-sealing a zipper bag as claimed in claim 5, wherein: the distance between the rear parts of the adjacent surfaces of the two clamping plates (82) is larger than the distance between the front parts of the adjacent surfaces of the two clamping plates (82).

7. The wrinkle-preventing bag making machine for heat-sealing a zipper bag according to claim 1, wherein: the bottom folding mechanism (9) comprises a box body (91), the middle parts of the left side wall and the right side wall in the cavity of the box body (91) are fixedly provided with triangular lugs (92), first fixing rods (96) are fixedly arranged at four corners of the left side wall and the right side wall of the inner cavity of the box body (91), one ends of the eight first fixing rods (96) far away from the inner wall of the box body (91) incline to the middle of the inner cavity of the box body (91) respectively, compression rollers (93) are fixedly arranged in the middle of the outer surfaces of the eight first fixing rods (96), the utility model discloses a two-roller type roller fixing device, including box (91) inner chamber, the one end that box (91) lateral wall was kept away from in four first dead levers (96) of box (91) inner chamber front portion and four first dead levers (96) at box (91) inner chamber rear portion is common fixed mounting respectively has horizon bar (94), two the both ends of horizon bar (94) are fixed mounting respectively has two second dead levers (97), eight the equal fixed mounting in second dead lever (97) surface has second roller (95).

8. The wrinkle-preventing bag making machine for heat-sealing a zipper bag as claimed in claim 7, wherein: the two horizontal rods (94) are positioned at the same horizontal height and are parallel to each other, and the four second fixing rods (97) positioned at the same side are respectively parallel to and tightly attached to the upper end and the lower end of the triangular lug (92) at the same side.

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