CN206264455U - A kind of packaging bag without dead angle hot edge seal device - Google Patents

Abstract

The utility model discloses a non-dead-angle heat-sealing device for a packaging bag, which comprises a support base plate. The two ends of the top of the support base plate are respectively fixedly installed with a drive plate and a housing from left to right. The front of the housing is provided with a control The top of the driving plate is provided with a driving groove, and one end of the bottom of the inner cavity of the driving plate is fixedly installed with a parallel movement mechanism connected to the side of the inner cavity of the driving plate. As for the driving rod above, one end of the driving rod above the driving plate is fixedly connected with a placement plate, and the side of the placement plate away from the driving rod is provided with a placement groove. Through the arrangement of the parallel movement mechanism, the drive rod and the placement plate, the packaging bag placed on the placement plate can freely enter and exit the inner cavity of the heat sealing edge machine along with the drive rod driven by the parallel movement mechanism, and the personnel will not Then use your hands to pick up the packaging bag for sealing work to ensure the safety of personnel.

Description

A non-dead-angle heat-sealing device for packaging bags

technical field

The utility model relates to the technical field of heat sealing edges, in particular to a heat sealing edge device for packaging bags without dead ends.

Background technique

Packaging bag refers to the bag used to pack various supplies, so that the goods are conveniently transported and stored during the production and circulation process, and are widely used in daily life and industrial production. Actual figures show that 80% of the plastic bags after use end up in Like ordinary garbage, it is transported to the landfill area for treatment, and only 7% of the plastic is recycled. Food packaging bags are a kind of packaging design. In order to facilitate freshness and storage in life, product packaging bags are produced. According to the scope of its application, food packaging bags can be divided into: ordinary food packaging bags, vacuum food packaging bags, inflatable food packaging bags, boiled food packaging bags, retort food packaging bags and functional food packaging bags.

With the continuous development and progress of social civilization, people are paying more and more attention to food and diet health, and packaging bags are the best tool for temporarily storing food. The existing packaging bags are often open-ended paper bags, so that It has always been necessary for people to hold the opening of the paper bag tightly to prevent the packaged items from falling. With the continuous improvement of technology, people have gradually eliminated the original means of heat preservation by holding the paper bag, but use a heat sealing machine to seal the bag mouth. Edge sealing, however, the existing edge sealing machine often has incomplete edge sealing, which will greatly reduce the effect of heat preservation, and if the edge sealing is performed again, the work cost will also be increased, and the existing Advanced heat sealing machines often need to rely on manpower to take paper bags for sealing, which may cause personnel burns, which will not only make the sealing effect not good, but also make the life safety of personnel not guaranteed.

Utility model content

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the utility model provides a non-dead-angle heat-sealing device for packaging bags, which can achieve the degree of no-dead-angle when the heat-sealing device performs edge sealing on the packaging bag and the automatic operation process is also It will prevent the user from being scalded and other advantages, and solve the problems that the sealing effect of the packaging bag is not good, which affects the quality of food insulation and the safety of personnel cannot be guaranteed.

(2) Technical solutions

In order to achieve the purpose that the above-mentioned thermal edge sealing device can achieve the degree of no dead angle when sealing the edge of the packaging bag and the automatic operation process will prevent the user from being burned, the utility model provides the following technical solutions: a The non-dead-angle heat-sealing device of the packaging bag includes a support base plate, and the two ends of the support base plate top are respectively fixedly installed with a drive plate and a housing from left to right. There is a drive slot, one end of the bottom of the inner cavity of the drive plate is fixedly installed with a parallel movement mechanism that is rotationally connected to the side of the inner cavity of the drive plate, and the top of the parallel movement mechanism is fixedly connected with a drive rod that runs through the drive groove and extends to the top of the drive plate. One end above the drive plate is fixedly connected with a placement plate, and the side of the placement plate away from the drive rod is provided with a placement groove, both ends of the bottom of the inner cavity of the housing are fixedly installed with support platforms, and one side of the inner cavity of the housing is fixedly installed with a support platform. The top of the inner cavity of the housing is fixedly installed with a drive box located above the card plate. Two cavities are respectively opened at both ends of the drive box. The bottom of the left cavity is fixedly connected with the top of the left cavity and The first transmission mechanism on the drive box, the side of the first transmission mechanism is fixedly connected with a driven rod, the bottom of the driven rod is fixedly connected with a pressing plate that runs through the bottom of the drive box and extends to the inner cavity of the housing, the bottom of the right cavity The two ends are fixedly connected to the side of the cavity on the right and the second transmission mechanism is located on the drive box. The second transmission mechanism is sleeved with a second moving sleeve. The bottom of the second moving sleeve is hinged with a push rod. The push rod A fixed plate is hinged at the end far away from the second moving sleeve, and the center of the fixed plate away from the push rod is fixedly installed with an edge banding rod that runs through the bottom of the drive box and extends to the inner cavity of the housing.

Preferably, the parallel movement mechanism includes a first motor clip, the top of the first motor clip is fixedly mounted with a first driving motor, and the output shaft of the first driving motor is fixedly connected with a first driving motor that is rotationally connected with the side of the inner cavity of the driving plate. shaft, a first moving sleeve connected to the driving rod is sheathed on the first driving shaft.

Preferably, the first transmission mechanism includes a lower fixed platform and an upper fixed platform, a second drive motor is fixedly installed on the top of the lower fixed platform, the output shaft of the second drive motor is fixedly connected with a lower guide wheel, and the bottom of the upper fixed platform The upper guide wheel is rotatably connected, and the lower guide wheel and the upper guide wheel are connected through a transmission belt with a driven rod fixedly installed on the side.

Preferably, the second transmission mechanism includes a second motor clamp, a third drive motor is fixedly installed on the top of the second motor clamp, the output shaft of the third drive motor is fixedly connected with a lower bevel gear, and a The two ends are respectively connected to the second drive shaft in rotation with the side of the right cavity, the second drive shaft is sleeved with a side bevel gear meshing with the side of the lower bevel gear, and the second drive shaft is sleeved with a side bevel gear located at the side Side of the second mobile set.

Preferably, the number of the driving rods is four, and the four driving rods jointly support the placing plate, so that the placing plate can remain relatively stable during the moving process, which can ensure that the sealing of the heat edge banding machine is complete without dead ends Effect.

Preferably, the number of the second moving sleeve and the pushing rod is two, and each pushing rod corresponds to a second moving sleeve, and the two pushing rods jointly push the fixed plate up and down, so that the fixed plate can be raised and lowered. During the process, it can remain stable and there will be no shaking.

A method for using a non-dead angle heat sealing edge device for packaging bags, the steps are as follows:

S1: Turn on the controller, and the controller sends an instruction to make the first drive motor work normally. After the first drive motor works normally, it can drive the first drive shaft to rotate. When the first drive shaft rotates, it can make the first drive shaft rotate The first moving sleeve moves to the right on the first drive shaft, so that the drive rod can drive the placement plate to move to the right synchronously, so that the packaging bag on the placement plate can enter the inside of the housing, And it can be smoothly connected with the card board, and at this moment, the first driving motor stops working.

S2: Adjust the controller, the controller sends an instruction to make the second drive motor work normally, after the second drive motor works normally, it can drive the lower guide wheel to rotate, and because the lower guide wheel and the upper guide wheel are driven by the transmission belt , so the transmission belt can carry out regular circular motion with the rotation of the lower guide wheel and the upper guide wheel, but the movement frequency of the lower guide wheel and the upper guide wheel should not be too large, otherwise the driven rod on the side of the drive belt may be damaged by torsional stress. When the driven rod on the side of the transmission belt moves up and down, the pressing plate at the bottom of the driven rod can also move up and down synchronously, so that the pressing plate can press and fix the packaging bag entering the housing inside the placement plate. When the second drive motor stops working.

S3: Adjust the controller. The controller sends an instruction to make the third driving motor work normally. After the third driving motor works normally, it can drive the lower bevel gear to rotate, and because the lower bevel gear meshes with the side bevel gear, it can make the The second drive shaft that is sleeved with the side bevel gear can also rotate, so the two second moving sleeves on the second drive shaft can slide relative to the surface of the second drive shaft, so that the second moving sleeve can The hinged push rod can push the fixed plate to move up and down, and the fixed plate can drive the edge banding rod connected with the fixed plate to also perform lifting movement while the fixed plate moves up and down, and because the bottom of the edge banding rod is equipped with a heating sheet , so when the edge banding rod comes into contact with the opening of the packaging bag on the placement plate during the descending process, the two sides of the opening of the packaging bag can be quickly melted to seal the opening of the packaging bag, and finally achieve a heat-sealed edge without dead ends Effect.

(3) Beneficial effects

Compared with the prior art, the utility model provides a non-dead angle heat-sealing device for packaging bags, which has the following beneficial effects:

1. The non-dead-angle heat-sealing device of the packaging bag and its use method, through the setting of the parallel movement mechanism, the drive rod and the placement plate, the packaging bag placed on the placement plate can be moved along with the drive rod driven by the parallel movement mechanism. And the effect of freely entering and exiting the inner cavity of the heat-sealing machine, and achieving the effect that personnel will no longer use their hands to pick up the packaging bag for sealing work and ensure the safety of personnel.

2. The non-dead-angle heat-sealing device of the packaging bag and its use method, through the setting of the first transmission mechanism, the driven rod and the pressing plate, the driven rod driven by the first transmission mechanism can drive the pressing plate to go up and down The effect of movement is to achieve the effect that the driven rod can press the packaging bag placed on the placement plate to ensure that the packaging bag remains stable on the placement board, and to ensure that the packaging bag can be in a relatively stable state during heat sealing edge processing Get the effect of no dead angle sealing.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of the front view structure of a non-dead-angle heat-sealing device for a packaging bag proposed by the utility model;

Fig. 2 is a front view sectional structure schematic diagram of a driving plate of a non-dead-angle heat-sealing device for a packaging bag proposed by the utility model;

Fig. 3 is a front view sectional structure schematic diagram of a heat-sealing device housing of a packaging bag proposed by the utility model;

Fig. 4 is a front view sectional structure diagram of a driving box of a non-dead-angle heat-sealing device for a packaging bag proposed by the utility model.

In the figure: 1 supporting base plate, 2 driving plate, 3 housing, 4 controller, 5 driving groove, 6 parallel moving mechanism, 61 first motor clamp, 62 first driving motor, 63 first driving shaft, 64 first moving Set, 7 driving rod, 8 placing plate, 9 placing slot, 10 supporting platform, 11 clamping plate, 12 driving box, 13 first transmission mechanism, 131 lower fixed platform, 132 upper fixed platform, 133 second driving motor, 134 lower Guide wheel, 135 upper guide wheel, 136 transmission belt, 14 driven rod, 15 pressing plate, 16 second transmission mechanism, 161 second motor clamp, 162 third driving motor, 163 lower bevel gear, 164 side bevel gear, 165 first Two drive shafts, 17 second moving sleeves, 18 push rods, 19 fixed plates, 20 edge banding rods.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1-4, a non-dead-angle heat-sealing device for packaging bags, including a support base plate 1, the two ends of the top support base plate 1 are fixedly installed with a drive plate 2 and a housing 3 from left to right, and the housing 3 A controller 4 is provided on the front of the drive plate 2, and a drive groove 5 is provided on the top of the drive plate 2. One end of the bottom of the inner cavity of the drive plate 2 is fixedly installed with a parallel movement mechanism 6 connected to the side of the inner cavity of the drive plate 2. The parallel movement mechanism 6 The top is fixedly connected with a drive rod 7 that runs through the drive groove 5 and extends to the top of the drive plate 2. One end of the drive rod 7 above the drive plate 2 is fixedly connected with a placement plate 8, and the side of the placement plate 8 away from the drive rod 7 is provided with a placement plate. Groove 9, both ends of the bottom of the inner cavity of the housing 3 are fixedly equipped with a support platform 10, one side of the inner cavity of the housing 3 is fixedly installed with a clamping plate 11, and the top of the inner cavity of the housing 3 is fixedly installed with a clamping plate 11 The drive box 12 above, the two ends of the drive box 12 inside are respectively provided with two cavities, the bottom of the left cavity is fixedly installed with the first transmission mechanism 13 fixedly connected with the top of the left cavity and positioned on the drive box 12, the second The side of a transmission mechanism 13 is fixedly connected with a driven rod 14, and the bottom of the driven rod 14 is fixedly connected with a pressing plate 15 that runs through the bottom of the drive box 12 and extends to the inner cavity of the housing 3, and the bottom of the right cavity is fixedly installed with two The ends are respectively connected with the second transmission mechanism 16 on the side of the cavity on the right and positioned on the drive box 12. The second transmission mechanism 16 is sleeved with a second moving sleeve 17, and the bottom of the second moving sleeve 17 is hinged with a push rod 18. The end of the push rod 18 away from the second moving sleeve 17 is hinged with a fixed plate 19, and the center of the side of the fixed plate 19 away from the push rod 18 is fixedly installed with an edge banding rod that runs through the bottom of the drive box 12 and extends to the inner cavity of the housing 3 20.

In the utility model, the parallel movement mechanism 6 includes a first motor clamp 61, a first drive motor 62 is fixedly installed on the top of the first motor clamp 61, and the output shaft of the first drive motor 62 is fixedly connected to the inner cavity side of the drive plate 2. The first driving shaft 63 is rotatably connected, and the first moving sleeve 64 connected with the driving rod 7 is sleeved on the first driving shaft 63 .

In the utility model, the first transmission mechanism 13 includes a lower fixed platform 131 and an upper fixed platform 132, the top of the lower fixed platform 131 is fixedly installed with a second drive motor 133, and the output shaft of the second drive motor 133 is fixedly connected with a lower guide wheel 134, the bottom of the upper fixed table 132 is rotatably connected with an upper guide wheel 135, and the lower guide wheel 134 and the upper guide wheel 135 are connected through a transmission belt 136 with a driven rod 14 fixedly installed on the side.

In the utility model, the second transmission mechanism 16 includes a second motor clamp 161, the top of the second motor clamp 161 is fixedly installed with a third driving motor 162, and the output shaft of the third driving motor 162 is fixedly connected with a lower conical gear 163, and the lower The top of conical gear 163 is provided with the second drive shaft 165 that two ends are respectively connected with the cavity side rotation on the right side, and the side bevel gear 164 that meshes with lower bevel gear 163 side is sleeved on the second drive shaft 165, and the second The second moving sleeve 17 located on one side of the side bevel gear 164 is sleeved on the driving shaft 165 .

In the utility model, the number of driving rods 7 is four, and the four driving rods 7 jointly support the placing plate 8, so that the placing plate 8 can keep relatively stable during the moving process, which can ensure the sealing of the heat sealing machine Complete effect without dead ends.

In the utility model, the quantity of the second moving sleeve 17 and the pushing rod 18 is two, and each pushing rod 18 corresponds to a second moving sleeve 17, and the two pushing rods 18 jointly push the fixed plate 19 up and down, so that The fixing plate 19 can be kept stable during the lifting process without shaking.

In the utility model, through the arrangement of the parallel movement mechanism 6, the drive rod 7 and the placement plate 8, the packaging bag placed on the placement plate 8 can freely enter and exit the heat-sealed edge along with the drive rod 7 driven by the parallel movement mechanism 6. The effect of the inner cavity of the machine, and achieve the effect that personnel will no longer use their hands to pick up the packaging bag for sealing work and ensure the safety of personnel.

In the utility model, through the setting of the first transmission mechanism 13, the driven rod 14 and the pressing plate 15, the effect that the driven rod 14 driven by the first transmission mechanism 13 can drive the pressing plate 15 to carry out lifting motion is achieved, and the The moving rod 14 can suppress the packaging bag placed on the placement plate 8 to ensure that the packaging bag remains stable on the placement plate 8, and achieve the effect of ensuring that the packaging bag can be obtained in a relatively stable state when heat-sealing edge processing. The effect of dead corner sealing.

A method for using a non-dead angle heat sealing edge device for packaging bags, the steps are as follows:

S1: Turn on the controller 4, and the controller 4 issues an instruction to make the first drive motor 62 work normally. After the first drive motor 62 works normally, it can drive the first drive shaft 63 to rotate, and the first drive shaft 63 can make the The first moving sleeve 64 on the first drive shaft 63 moves to the right on the first drive shaft 63, so that the drive rod 7 can drive the placement plate 8 to move to the right synchronously, so that the placement plate 8 The packaging bag on the top can enter the inside of the housing 3, and can be smoothly engaged with the clamping plate 11, and at this moment, the first driving motor 62 stops working.

S2: adjust the controller 4, the controller 4 issues instructions to make the second drive motor 133 work normally, and the second drive motor 133 can drive the lower guide wheel 134 to rotate after the second drive motor 133 works normally, and because the lower guide wheel 134 and the upper guide wheel 125 The transmission is carried out by the transmission belt 136, so the transmission belt 136 can carry out regular circular motion along with the rotation of the lower guide wheel 134 and the upper guide wheel 125, but the movement frequency of the lower guide wheel 134 and the upper guide wheel 125 cannot be too large, otherwise The driven rod 14 on the side of the transmission belt 136 can be damaged by torsional stress. When the driven rod 14 on the side of the transmission belt 136 moves up and down, the pressing plate 15 at the bottom of the driven rod 14 can also move synchronously. The plate 15 presses and fixes the packaging bag on the placement plate 8 that enters the housing 3, and the second drive motor 133 stops working at this moment.

S3: adjust the controller 4, the controller 4 issues an instruction to make the third driving motor 162 work normally, after the third driving motor 162 works normally, it can drive the lower bevel gear 163 to rotate, and because the lower bevel gear 163 and the side bevel gear 164 In this way, the second drive shaft 165 that is sleeved with the side bevel gear 164 can also rotate, so the two second moving sleeves 17 on the second drive shaft 165 can slide on the surface of the second drive shaft 165 Relative movement, so that the push rod 18 hinged with the second moving sleeve 17 can push the fixed plate 19 to carry out lifting movement, and the fixed plate 19 can drive the edge banding rod connected with the fixed plate 19 while lifting and lowering 20 can also carry out lifting movement, and because the bottom of edge banding bar 20 is provided with heating plate, so when edge banding bar 20 contacts with the opening of the packaging bag on the placement plate 8 in the process of descending, the two sides of the opening of the packaging bag The side can be quickly melted to seal the mouth of the packaging bag, and finally achieve the effect of heat-sealed edges without dead ends.

The electrical components appearing in this article are all connected with the external main controller and 220V mains electricity, and the main controller can be a conventional known device that plays a control such as a computer.

To sum up, the non-dead-angle heat-sealing device of the packaging bag, through the setting of the parallel movement mechanism 6, the driving rod 7 and the placement plate 8, achieves that the packaging bag placed on the placement plate 8 can follow the parallel movement mechanism 6 The driven driving rod 7 can freely enter and exit the inner cavity of the heat-sealing machine, and achieve the effect that personnel will no longer use their hands to take the packaging bag for sealing work and ensure the safety of personnel. Through the first transmission mechanism 13, the driven The setting of the rod 14 and the pressing plate 15 achieves the effect that the driven rod 14 driven by the first transmission mechanism 13 can drive the pressing plate 15 to carry out lifting movement, and the driven rod 14 can control the packaging bag placed on the placement plate 8. Press to ensure that the packaging bag remains stable on the placement plate 8, and achieve the effect of ensuring that the packaging bag can be sealed without dead ends in a relatively stable state during heat-sealing edge processing, which solves the problem of poor sealing effect of the packaging bag Problems that affect the quality of food insulation and the safety of personnel cannot be guaranteed.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (6)

1. A non-dead angle heat-sealing device for a packaging bag, comprising a support base plate (1), characterized in that: the two ends of the top of the support base plate (1) are fixedly installed with drive plates (2) and The housing (3), the front of the housing (3) is provided with a controller (4), the top of the driving plate (2) is provided with a driving groove (5), and one end of the bottom of the inner cavity of the driving plate (2) is fixedly installed with a The side of the drive plate (2) is rotationally connected to the parallel movement mechanism (6), and the top of the parallel movement mechanism (6) is fixedly connected with the drive rod (7) that runs through the drive groove (5) and extends to the top of the drive plate (2) , one end of the drive rod (7) located above the drive plate (2) is fixedly connected with a placement plate (8), and the side of the placement plate (8) away from the drive rod (7) is provided with a placement groove (9), the housing (3) Both ends of the bottom of the inner cavity are fixedly equipped with a support platform (10), one side of the inner cavity of the housing (3) is fixedly installed with a clamping plate (11), and the top of the inner cavity of the housing (3) is fixedly installed There is a drive box (12) positioned above the clamp (11), and two cavities are respectively opened at both ends of the drive box (12), and the bottom of the left cavity is fixedly connected with the top of the left cavity and positioned at the drive box. The first transmission mechanism (13) on the box (12), the side of the first transmission mechanism (13) is fixedly connected with a driven rod (14), and the bottom of the driven rod (14) is fixedly connected with a penetrating drive box (12) The bottom and extends to the pressing plate (15) of the inner cavity of the housing (3), and the bottom of the right cavity is fixedly installed with two ends respectively connected to the side of the right cavity in rotation and the second transmission mechanism ( 16), the second transmission mechanism (16) is sleeved with a second mobile sleeve (17), the bottom of the second mobile sleeve (17) is hinged with a push rod (18), and the push rod (18) is away from the second mobile sleeve ( One end of 17) is hinged with a fixed plate (19), and the center of the side of the fixed plate (19) away from the push rod (18) is fixedly installed with a screw that runs through the bottom of the drive box (12) and extends to the inner cavity of the housing (3). Edge rod (20). 2. A non-dead-angle heat-sealing device for packaging bags according to claim 1, characterized in that: the parallel movement mechanism (6) includes a first motor clamp (61), the first motor clamp (61) The top is fixedly installed with the first drive motor (62), and the output shaft of the first drive motor (62) is fixedly connected with the first drive shaft (63) that is connected with the drive plate (2) inner cavity side rotation, the first drive shaft ( 63) is sleeved with a first moving sleeve (64) connected to the drive rod (7). 3. A non-dead-angle heat-sealing device for packaging bags according to claim 1, characterized in that: the first transmission mechanism (13) includes a lower fixing platform (131) and an upper fixing platform (132), and the lower fixing platform (132) The top of the fixed table (131) is fixedly installed with the second drive motor (133), the output shaft of the second drive motor (133) is fixedly connected with the lower guide wheel (134), and the bottom of the upper fixed table (132) is rotatably connected with the upper guide wheel (134). Guide wheel (135), and between the lower guide wheel (134) and the upper guide wheel (135), the drive belt (136) transmission connection with the driven rod (14) is fixedly installed on the side. 4. A non-dead-angle heat-sealing device for packaging bags according to claim 1, characterized in that: the second transmission mechanism (16) includes a second motor clamp (161), and the second motor clamp (161) The top of the top is fixedly installed with the 3rd driving motor (162), and the output shaft of the 3rd driving motor (162) is fixedly connected with the lower bevel gear (163), and the top of the lower bevel gear (163) is provided with two ends and the right cavity respectively. The second drive shaft (165) that the side is rotatably connected, is sleeved with the side bevel gear (164) that is meshed with the side of the lower bevel gear (163) on the second drive shaft (165), and on the second drive shaft (165) A second moving sleeve (17) located on one side of the side bevel gear (164) is sleeved. 5. A non-dead-angle heat-sealing device for packaging bags according to claim 1, characterized in that: the number of the driving rods (7) is four, and the four driving rods (7) jointly support the placing plate (8), so that the placing plate (8) can remain relatively stable during the moving process, which can ensure that the sealing of the heat edge sealing machine is complete without dead ends. 6. A non-dead-angle heat-sealing device for packaging bags according to claim 1, characterized in that: the number of the second moving sleeve (17) and the pushing rod (18) are two, and each pushing The rod (18) corresponds to a second moving sleeve (17), and the two push rods (18) jointly push the fixed plate (19) up and down, so that the fixed plate (19) can be kept stable during the lifting process. There will be no shaking.