Heat-seal embossing device for plastic rolling packaging bag

Abstract

The invention relates to the technical field of packaging bag processing, in particular to a plastic rolling packaging bag heat sealing and embossing device which comprises two sets of extrusion units distributed left and right, a packaging bag is vertically conveyed between the two sets of extrusion units, and the two sets of extrusion units synchronously and reversely rotate and conduct heat sealing and embossing treatment on the packaging bag between the two sets of extrusion units; the extrusion unit is composed of a supporting shaft with the horizontal axis and a plurality of fixing plates located on the supporting shaft, the fixing plates are annularly distributed around the axis of the supporting shaft, and the end face of each fixing plate is provided with a coining cutter used for conducting coining work. Through synchronous reverse rotation of the two sets of extrusion units, heat sealing and coining work of packaging bags can be completed in the continuous conveying process, the machining efficiency is improved, and the situation that equipment needs to be started and stopped frequently in traditional machining is avoided through the mode, so that equipment abrasion is reduced, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging bag processing, and particularly relates to a heat-sealing and embossing device for plastic continuous-roll packaging bags. Background Art

[0002] With the development of modern industry and the improvement of consumers' requirements for the quality of product packaging, packaging technology has been continuously progressing and innovating. Among various packaging forms, plastic continuous-roll packaging bags are widely used in various places such as supermarkets and shopping malls due to their low cost and convenient use. The continuous-roll packaging bag is in a rolled tubular shape. When in use, one packaging bag can be pulled out, and then torn at the connection position between two packaging bags to obtain one packaging bag. This is not only convenient to use but also does not take up much space.

[0003] When processing continuous-roll packaging bags, one end of a long tubular plastic bag is wound onto a roller. Through the rotation of the roller, it is horizontally conveyed. During the conveying process, a plurality of equally spaced indentations are pressed on the bag by a heat-sealing knife and an embossing knife. The heat-sealing knife is used to perform heat-sealing treatment on the bag to form a small sealed plastic bag from the long tubular bag. The embossing knife can press a tear line on the bag to facilitate people to separate two bags along the tear line. The tear line is close to the heat-sealing mark. When heat-sealing and embossing, the roller needs to stop running to keep the bag stationary, and then the heat-sealing knife or embossing knife is pushed by a structure such as a cylinder to process the bag. This processing method will reduce the continuity of packaging bag production, and repeated starting and stopping of the equipment will affect the service life of the equipment. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a heat-sealing and embossing device for plastic continuous-roll packaging bags. The specific technical solution adopted is as follows: A heat-sealing and embossing device for plastic continuous-roll packaging bags includes two sets of extrusion units distributed left and right. The packaging bag is vertically conveyed between the two sets of extrusion units. The two sets of extrusion units rotate synchronously and in opposite directions to perform heat-sealing and embossing treatment on the packaging bag between them. The extrusion unit consists of a support shaft with a horizontal axis and a plurality of fixing plates located on the support shaft. The plurality of fixing plates are annularly distributed around the axis of the support shaft. The end face of the fixing plate is provided with an embossing knife for performing embossing work. A turning plate is rotatably arranged on the side wall of the fixing plate. An installation plate is arranged on the turning plate. A hot-pressing roller for performing heat-sealing work is rotatably arranged on the end face of the installation plate. The turning plate is connected to the fixing plate through a leaf spring. A tapered column is arranged on the side wall of the turning plate. Wherein, a baffle is arranged between the two sets of extrusion units. When the tapered column moves to the position of the baffle, the baffle blocks the conical surface of the tapered column, and the baffle can move along the axis direction of the support shaft.

[0005] Furthermore, an outer frame for support is provided on the outer sides of the two groups of extrusion units. The baffle plates pass through the outer frame horizontally and are slidably connected to each other. A first limiting plate is provided at the end of the baffle plate on the outer side of the outer frame, and a first support plate is provided on the outer frame. The first limiting plate and the first support plate are connected by a spring.

[0006] Furthermore, a base is fixed on the fixing plate. The base is hollow, and a movable plate is slidably arranged inside the base. The movable plate and the base are connected by a first elastic sheet. A jack is opened on the side wall of the base away from the fixing plate, and the stamping knife passes through the jack and is fixed on the movable plate; Wherein, an opening is provided on the movable plate.

[0007] Furthermore, the mounting plate slides on the turning plate, and the mounting plate and the turning plate are connected by a second elastic sheet. An arc-shaped rod is provided on the fixing plate, and the arc-shaped rod slides through the turning plate. A second limiting plate for limiting the movement range of the turning plate is provided at the end of the arc-shaped rod.

[0008] Furthermore, a second support plate is slidably inserted through each fixing plate, and the second support plate is fixed on the outer wall of the support shaft; Wherein, when the distance between the two support shafts changes, the fixing plate slides on the second support plate.

[0009] Furthermore, a push-pull rod is inclined and rotatably arranged on the side wall of each fixing plate. An adjusting gear ring is rotatably arranged on the outer wall of the support shaft, and a clamping gear ring is slidably arranged. The clamping gear ring slides along the axis direction of the support shaft. The clamping gear ring and the support shaft are connected by a third elastic sheet. The adjusting gear ring and the clamping gear ring are meshed and connected with each other, and the push-pull rod is rotatably connected with the adjusting gear ring.

[0010] Furthermore, two guide rails are oppositely arranged on the inner side wall of the outer frame. The guide rails are horizontal, and two sliders are slidably arranged on the guide rails. An adjusting rod is rotatably arranged on each slider. A cylinder is arranged between the two adjusting rods. The fixed end of the cylinder is installed on the outer frame, and the movable end of the cylinder is rotatably connected with the two adjusting rods. The support shaft is rotatably installed on the slider.

[0011] Furthermore, worm wheels are provided at both ends of each support shaft. Worms are meshed with the worm wheels. The two worms on the same side of the support shaft are butted. A motor for providing power for the worm is provided at one end of the two butted worms. The motor is fixed on the outer frame; Wherein, the spiral directions of the two butted worms are opposite.

[0012] The advantages of the present invention are as follows: Through the synchronous reverse rotation of two sets of extrusion units, the packaging bag can complete the heat sealing and embossing work during continuous conveying, improving the processing efficiency. Moreover, this method avoids the situation of frequently starting and stopping the equipment in traditional processing, thereby reducing equipment wear and extending the service life of the equipment; through the roller pressing and heating treatment of the packaging bag by the hot pressing roller, a wider heat sealing area can be formed on the packaging bag instead of just a line, thus enhancing the sealing performance of the packaging bag; the combined use of the conical column and the baffle can keep the hot pressing roller stationary during heat sealing. When the heat sealing is completed, by using the direct thrust when the fixing plate contacts the flipping plate, the conical column can overcome the baffle and make the flipping plate and the hot pressing roller move again, so that the heat sealing work starts and stops automatically, realizing the working method of automatically intercepting and releasing the hot pressing roller, without the need for other control structures and power structures to control the hot pressing roller, simplifying the structural method, improving its functionality, and ensuring the accuracy and consistency of heat sealing; in summary, this invention significantly improves the production efficiency and product quality of the continuous roll packaging bag by improving the working principle of heat sealing and embossing, while reducing equipment wear, and has high practical value and market potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] 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 drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 is the structural schematic diagram of the present invention; Figure 2 is Figure 1 the schematic diagram of the inner structure of the outer frame; Figure 3 is Figure 2 the explosion structural schematic diagram; Figure 4 is Figure 3 the enlarged structural schematic diagram of two sets of extrusion units; Figure 5 is Figure 4 the enlarged structural schematic diagram of the extrusion unit; Figure 6 is Figure 5 the enlarged structural schematic diagram of the fixing plate; Figure 7 is Figure 6 the sectional structural schematic diagram; Reference numerals: 1, extrusion unit; 2, support shaft; 3, fixed plate; 4, embossing knife; 5, turning plate; 6, hot pressing roller; 7, leaf spring; 8, tapered column; 9, baffle; 10, outer frame; 11, first limiting plate; 12, first support plate; 13, spring; 14, base; 15, movable plate; 16, first elastic sheet; 17, opening; 18, second elastic sheet; 19, arc-shaped rod; 20, second limiting plate; 21, second support plate; 22, push-pull rod; 23, adjusting gear ring; 24, clamping gear ring; 25, third elastic sheet; 26, guide rail; 27, slider; 28, adjusting rod; 29, cylinder; 30, worm gear; 31, worm; 32, motor; 33, mounting plate. Detailed implementation manners

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0016] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0017] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. This embodiment is written in a progressive manner.

[0018] As Figures 1 to 7 shown, a heat-sealing and embossing device for plastic continuous-roll packaging bags of the present invention includes two sets of extrusion units 1 arranged horizontally. The packaging bags are vertically conveyed between the two sets of extrusion units 1. The two sets of extrusion units 1 rotate synchronously in opposite directions and perform heat-sealing and embossing treatments on the packaging bags therebetween; The extrusion unit 1 is composed of a support shaft 2 with a horizontal axis and a plurality of fixed plates 3 located on the support shaft 2. The plurality of fixed plates 3 are annularly distributed around the axis of the support shaft 2. An embossing knife 4 for performing embossing work is provided on the end face of the fixed plate 3. A turning plate 5 is rotatably provided on the side wall of the fixed plate 3. An installation plate 33 is provided on the turning plate 5. A hot pressing roller 6 for performing heat sealing work is rotatably provided on the end face of the installation plate 33. The turning plate 5 and the fixed plate 3 are connected by a leaf spring 7. A tapered column 8 is provided on the side wall of the turning plate 5; Wherein, a baffle 9 is provided between the two extrusion units 1. When the tapered column 8 moves to the position of the baffle 9, the baffle 9 blocks the conical surface of the tapered column 8, and the baffle 9 can move along the axis direction of the support shaft 2.

[0019] Specifically, the packaging bag is conveyed vertically upward between the two extrusion units 1. The two extrusion units 1 approach each other and perform extrusion and conveying work on the packaging bag therebetween. And during the conveying process, the two extrusion units 1 perform heat sealing and embossing work on the packaging bag. In this way, with the continuous movement of the extrusion unit 1 and the continuous conveying of the packaging bag, a continuous processing mode for the packaging bag is realized. The support shaft 2 is used to support the plurality of fixed plates 3 thereon. The fixed plate 3 provides support for the embossing knife 4 and the hot pressing roller 6 thereon. The embossing knife 4 is located at the end of the fixed plate 3 away from the support shaft 2. The turning plate 5 is located on the upper surface of the fixed plate 3. The turning plate 5 provides rotational support for the installation plate 33 and the hot pressing roller 6. The leaf spring 7 connects the turning plate 5 and the fixed plate 3. The leaf spring 7 provides an elastic driving force for the turning plate 5 and the hot pressing roller 6. The tapered column 8 and the baffle 9 cooperate to block the turning plate 5 and the hot pressing roller 6.

[0020] When processing the packaging bag, the packaging bag is conveyed between two sets of extrusion units 1. The two sets of extrusion units 1 rotate synchronously in opposite directions, that is, the two support shafts 2 rotate synchronously in opposite directions. The support shafts 2 drive the fixed plates 3, embossing knives 4, turning plates 5, hot pressing rollers 6, leaf springs 7 and tapered columns 8 thereon to move synchronously. When the two fixed plates 3 and the structures thereon at corresponding positions on the two support shafts 2 move between the two support shafts 2, the two hot pressing rollers 6 on the two fixed plates 3 contact the left and right sides of the packaging bag and simultaneously perform extrusion heat sealing on the packaging bag. At this time, the tapered column 8 moves to the position of the baffle 9, and the baffle 9 blocks the tapered column 8. With the continuous conveyance of the packaging bag and the rotation of the support shafts 2, the packaging bag drives the hot pressing rollers 6 to rotate on the mounting plate 33. The position of the hot pressing rollers 6 is fixed. Therefore, the hot pressing rollers 6 can heat seal a narrow strip on the packaging bag, which can increase the heat sealing area, improve the sealing effect of the packaging bag, and avoid the problem of poor sealing effect when only a single line is heat sealed on the packaging bag. Since the hot pressing rollers 6 are blocked by the baffle 9 and the support shafts 2 continue to rotate, relative movement occurs between the support shafts 2 and the hot pressing rollers 6. The fixed plates 3 approach the hot pressing rollers 6, the turning plates 5 rotate on the fixed plates 3, and the leaf springs 7 undergo elastic deformation. When the fixed plates 3 contact the turning plates 5, the fixed plates 3 provide a direct driving force to the turning plates 5, enabling the turning plates 5 to push the baffle 9 to move laterally away from the tapered column 8 by utilizing the tapered surface of the tapered column 8. At this time, the tapered column 8 is separated from the baffle 9, and the leaf springs 7 push the turning plates 5 to reset on the fixed plates 3. The hot pressing rollers 6 are separated from the packaging bag, and during this process, the embossing knives 4 on the fixed plates 3 perform embossing on the packaging bag, thereby embossing a tear line on the packaging bag. Thus, the processing of a heat sealing area and a tear line on the packaging bag is completed. With the continuous rotation of the support shafts 2, the embossing knives 4 and the hot pressing rollers 6 installed on each fixed plate 3 on the support shafts 2 repeatedly and continuously process the packaging bag, thereby realizing the continuous heat sealing and embossing work of the packaging bag and achieving an operation mode without stopping the machine.

[0021] It should be noted that during the heat sealing operation, the position of the hot pressing rollers 6 is fixed by the baffle 9, and it performs roller pressing heat sealing on the moving packaging bag.

[0022] In actual use, the packaging bag can be conveyed and guided through the conveying rollers arranged on the upper and lower sides of the two sets of extrusion units 1. Tapered columns 8 can be arranged on the front and rear side walls of the fixed plate 3, and two baffles 9 can also be correspondingly arranged, so that the baffles 9 cooperate with the tapered columns 8. The hot pressing rollers 6 are internally configured with heating structures such as electric heating wires or electric heating rods.

[0023] By the synchronous reverse rotation of two sets of extrusion units 1, the packaging bag can complete the heat sealing and embossing work during continuous transportation, improving the processing efficiency. Moreover, this method avoids the situation of frequently starting and stopping the equipment in traditional processing, thereby reducing equipment wear and extending the service life of the equipment. By performing roller pressing and heating treatment on the packaging bag with the hot pressing roller 6, a wider heat sealing area can be formed on the packaging bag instead of just a line, thus enhancing the sealing performance of the packaging bag. The combined use of the tapered column 8 and the baffle 9 can keep the hot pressing roller 6 stationary during heat sealing. After heat sealing is completed, when the fixed plate 3 contacts the flipping plate 5, the direct thrust can make the tapered column 8 overcome the baffle 9 and move the flipping plate 5 and the hot pressing roller 6 again, so that the heat sealing work starts and stops automatically, realizing the working mode of automatically intercepting and releasing the hot pressing roller 6. There is no need for other control structures and power structures to control the hot pressing roller 6, simplifying the structural method, improving its functionality, and ensuring the accuracy and consistency of heat sealing. In summary, this invention significantly improves the production efficiency and product quality of continuous roll packaging bags by improving the working principle of heat sealing and embossing, while reducing equipment wear, and has high practical value and market potential.

[0024] Further, an outer frame 10 for support is provided on the outer sides of the two sets of extrusion units 1. The baffle 9 passes through the outer frame 10 horizontally and is slidably connected thereto. A first limit plate 11 is provided at the end of the baffle 9 on the outer side of the outer frame 10. A first support plate 12 is provided on the outer frame 10. The first limit plate 11 and the first support plate 12 are connected by a spring 13.

[0025] Specifically, the first support plate 12 supports the spring 13. The spring 13 provides an elastic thrust to the first limit plate 11 and the baffle 9. And the first limit plate 11 contacts the outer wall of the outer frame 10, thus positioning the baffle 9. When the fixed plate 3 contacts the flipping plate 5 thereon and pushes the flipping plate 5 to move, the conical surface on the tapered column 8 generates an inclined thrust on the baffle 9, so that the baffle 9 slides on the outer frame 10 and deviates from the tapered column 8. At this time, the baffle 9 drives the first limit plate 11 to move, and the first limit plate 11 pushes the spring 13 to undergo elastic deformation.

[0026] Further, a base 14 is fixed on the fixed plate 3. The base 14 is hollow. An activity plate 15 is slidably arranged in the base 14. The activity plate 15 and the base 14 are connected by a first elastic sheet 16. A jack is opened on the side wall of the base 14 away from the fixed plate 3. The embossing knife 4 passes through the jack and is fixed on the activity plate 15; Wherein, an opening 17 is opened on the activity plate 15.

[0027] Specifically, the base 14 is used to support the movable plate 15, the first elastic piece 16 and the stamping knife 4. The first elastic piece 16 provides an elastic thrust to the movable plate 15 and the stamping knife 4. When two stamping knives 4 at corresponding positions on the two support shafts 2 approach each other and squeeze the packaging bag, the stamping knife 4 performs a stamping process on the packaging bag. The two stamping knives 4 interact with each other and cause the stamping knife 4 to move towards the inside of the base 14. At this time, the stamping knife 4 pushes the movable plate 15 to slide, and the first elastic piece 16 undergoes elastic deformation. Through this structural design, sufficient squeezing force and sufficient movement space can exist between the two stamping knives 4, and the structures of the movable plate 15 and the first elastic piece 16 can buffer the stamping knife 4. The opening 17 allows air to circulate inside the base 14.

[0028] Furthermore, the mounting plate 33 slides on the flipping plate 5, and the mounting plate 33 and the flipping plate 5 are connected by a second elastic piece 18. An arc-shaped rod 19 is provided on the fixing plate 3. The arc-shaped rod 19 slides through the flipping plate 5, and a second limiting plate 20 for limiting the movement range of the flipping plate 5 is provided at the end of the arc-shaped rod 19.

[0029] Specifically, the second elastic piece 18 can provide an elastic thrust to the mounting plate 33 and the hot pressing roller 6. Thus, when two hot pressing rollers 6 at corresponding positions squeeze each other and heat-seal the packaging bag, the hot pressing roller 6 can provide sufficient squeezing force to the packaging bag, and the structural design of the flipping plate 5 and the mounting plate 33 can conveniently provide a movement space for the hot pressing roller 6. At the same time, this can reduce the precision requirements for the position of the hot pressing roller 6.

[0030] The flipping plate 5 can slide on the arc-shaped rod 19, and the second limiting plate 20 limits the flipping plate 5.

[0031] Furthermore, a second support plate 21 is slidably inserted through each fixing plate 3, and the second support plate 21 is fixed on the outer wall of the support shaft 2; Wherein, when the distance between the two support shafts 2 changes, the fixing plate 3 slides on the second support plate 21.

[0032] Specifically, when heat-sealing and stamping different lengths of packaging bags are required, the turning diameter of the stamping knife 4 on the support shaft 2 needs to be adjusted. Therefore, it is necessary to make the fixing plate 3 slide on the second support plate 21, and at the same time, the distance between the two support shafts 2 needs to be adjusted to a specified value, thereby improving the applicable range of the equipment and improving functionality. The distance between the stamping knife 4 on the support shaft 2 and the axis of the support shaft 2 is always half of the connection line of the axes of the two support shafts 2.

[0033] Further, push-pull rods 22 are inclined and rotatably provided on the side walls of each fixing plate 3. An adjusting gear ring 23 is rotatably provided on the outer wall of the support shaft 2, and a clamping gear ring 24 is slidably provided thereon. The clamping gear ring 24 slides along the axial direction of the support shaft 2. The clamping gear ring 24 is connected to the support shaft 2 through a third elastic piece 25. The adjusting gear ring 23 and the clamping gear ring 24 are meshed and connected to each other, and the push-pull rod 22 is rotatably connected to the adjusting gear ring 23.

[0034] Specifically, the clamping gear ring 24 can abut against the adjusting gear ring 23 by means of the third elastic piece 25, so that the adjusting gear ring 23 and the clamping gear ring 24 are meshed and clamped with each other, and the adjusting gear ring 23 cannot rotate on the support shaft 2. When it is necessary to adjust the position of the fixing plate 3 on the second support plate 21, the clamping gear ring 24 is pushed away from the adjusting gear ring 23 and the adjusting gear ring 23 is rotated. The adjusting gear ring 23 drives a plurality of fixing plates 3 to slide synchronously on the corresponding second support plate 21 by means of a plurality of push-pull rods 22, so as to realize the adjustment of the positions of the plurality of fixing plates 3.

[0035] Further, two guide rails 26 are oppositely provided on the inner side wall of the outer frame 10. The guide rails 26 are horizontal. Two sliders 27 are slidably provided on the guide rails 26. An adjusting rod 28 is rotatably provided on each slider 27. A cylinder 29 is provided between the two adjusting rods 28. The fixed end of the cylinder 29 is installed on the outer frame 10, and the movable end of the cylinder 29 is rotatably connected to the two adjusting rods 28. The support shaft 2 is rotatably installed on the slider 27.

[0036] Specifically, when the cylinder 29 expands and contracts, it can drive the two sliders 27 to slide synchronously and reversely on the guide rails 26 through the two adjusting rods 28. The two sliders 27 can drive the two support shafts 2 to move synchronously and reversely, so as to synchronously adjust the positions of the two support shafts 2 and the distance therebetween.

[0037] Further, worm wheels 30 are provided at both ends of each support shaft 2. Worm gears 31 are meshed with the worm wheels 30. The two worm gears 31 on the same side of the support shaft 2 are butted. One end of the two butted worm gears 31 is provided with a motor 32 for providing power for the worm gears 31. The motor 32 is fixed on the outer frame 10; Among them, the spiral directions of the two butted worm gears 31 are opposite.

[0038] Specifically, the motor 32 can drive the two worm gears 31 thereon to rotate synchronously, and the two worm gears 31 drive the two worm wheels 30 thereon to rotate synchronously and reversely, so that the two support shafts 2 rotate synchronously and reversely.

[0039] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A heat-sealing and embossing device for plastic continuous roll packaging bags, characterized in that, It includes two sets of extrusion units distributed left and right. The packaging bag is vertically conveyed between the two sets of extrusion units. The two sets of extrusion units rotate synchronously and reversely to perform heat sealing and embossing on the packaging bag between them. The extrusion unit consists of a support shaft with a horizontal axis and a plurality of fixing plates located on the support shaft. The plurality of fixing plates are annularly distributed around the axis of the support shaft. An embossing knife for performing embossing work is provided on the end face of the fixing plate. A turning plate is rotatably provided on the side wall of the fixing plate. An installation plate is provided on the turning plate. A hot pressing roller for performing heat sealing work is rotatably provided on the end face of the installation plate. The turning plate is connected to the fixing plate by a leaf spring. A tapered column is provided on the side wall of the turning plate. Among them, a baffle is provided between the two sets of extrusion units. When the tapered column moves to the position of the baffle, the baffle blocks the conical surface of the tapered column, and the baffle can move along the axis direction of the support shaft.

2. The heat-sealing and embossing device for a plastic continuous roll packaging bag according to claim 1, wherein, An outer frame for support is provided outside the two sets of extrusion units. The baffle transversely passes through the outer frame and is slidably connected to each other. A first limiting plate is provided at the end of the baffle outside the outer frame. A first support plate is provided on the outer frame. The first limiting plate and the first support plate are connected by a spring.

3. A heat-sealing and embossing device for plastic continuous roll packaging bags according to claim 2, characterized in that, A base is fixed on the fixing plate. The base is hollow. A movable plate is slidably provided in the base. The movable plate is connected to the base by a first elastic sheet. A jack is opened on the side wall of the base away from the fixing plate. The embossing knife passes through the jack and is fixed on the movable plate. Among them, an opening is provided on the movable plate.

4. A heat-sealing and embossing device for plastic continuous roll packaging bags according to claim 3, characterized in that, The installation plate slides on the turning plate, and the installation plate and the turning plate are connected by a second elastic sheet. An arc-shaped rod is provided on the fixing plate. The arc-shaped rod slidably passes through the turning plate. A second limiting plate for limiting the movement range of the turning plate is provided at the end of the arc-shaped rod.

5. The heat-sealing and embossing device for plastic continuous-roll packaging bags according to claim 4, characterized in that, A second support plate is slidably inserted through each fixing plate. The second support plate is fixed on the outer wall of the support shaft. Among them, when the distance between the two support shafts changes, the fixing plate slides on the second support plate.

6. A heat-sealing and embossing device for plastic continuous roll packaging bags according to claim 5, characterized in that, A push-pull rod is inclined and rotatably provided on the side wall of each fixing plate. An adjusting gear ring is rotatably provided on the outer wall of the support shaft, and a positioning gear ring is slidably provided. The positioning gear ring slides along the axis direction of the support shaft. The positioning gear ring is connected to the support shaft by a third elastic sheet. The adjusting gear ring and the positioning gear ring are meshed and connected to each other. The push-pull rod is rotatably connected to the adjusting gear ring.

7. A heat-sealing and embossing device for plastic continuous roll packaging bags according to claim 6, characterized in that, Two guide rails are oppositely provided on the inner side wall of the outer frame. The guide rails are horizontal. Two sliders are slidably provided on the guide rails. An adjusting rod is rotatably provided on each slider. A cylinder is provided between the two adjusting rods. The fixed end of the cylinder is installed on the outer frame. The movable end of the cylinder is rotatably connected to the two adjusting rods. The support shaft is rotatably installed on the slider.

8. A heat-sealing and embossing device for plastic continuous roll packaging bags according to claim 7, characterized in that, Worms are provided at both ends of each support shaft. Worms are meshed with the worms. The two worms on the same side of the support shaft are butted. One end of the two butted worms is provided with a motor for providing power for the worms. The motor is fixed on the outer frame. Among them, the spiral directions of the two butted worms are opposite.

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