A packaging bag sealing machine

Abstract

The application relates to a packaging bag sealing machine, which comprises a chassis, a frame fixedly connected to the chassis, a conveying table and a sealing device arranged on the front side of the frame, the sealing device being arranged above the conveying table, mounting seats being fixedly connected to the rear sides of the conveying table and the sealing device, controllable adjusting mechanisms being arranged in the mounting seats, an adjusting screw rod being rotatably connected between the upper sides of the chassis and the frame, a rotary driving mechanism being connected to the upper end of the adjusting screw rod and arranged outside the upper side of the frame, a mounting cavity being arranged in the mounting seat, the controllable adjusting mechanism comprising a threaded sleeve and an adjustable locking mechanism, the threaded sleeve being threadedly matched on the adjusting screw rod, the threaded sleeve being rotatably matched in the mounting cavity, and the adjustable locking mechanism being arranged on the mounting seat and used for fixing the threaded sleeve on the mounting seat. The sealing device and the conveying table of the application can be adjusted in height, the adjustment is convenient, and one person can operate.

Description

Technical Field

[0001] This invention relates to the field of packaging equipment technology, and in particular to a packaging bag sealing machine. Background Technology

[0002] A packaging bag sealing machine is a machine that seals packaging bags filled with packaging materials. It is simple to operate and works stably.

[0003] Existing packaging machines generally include a frame, a conveyor table, and a sealing device. The conveyor table is located below the sealing device. Because it needs to be able to seal packaging bags of various sizes, existing packaging bag sealing machines generally have the conveyor table or sealing device movably mounted on the frame, thereby changing the distance between the conveyor table and the sealing device.

[0004] For example, in the integrated packaging and sealing equipment for thermal insulation materials described in application number CN201820962728.6, a base is fixedly installed on a lifting frame, and a conveyor belt is movably installed on the base (the base and conveyor belt are equivalent to the conveyor table in this invention). A support frame is fixedly installed at the upper end of the lifting frame located behind the base. A crossbar connects the two sets of support frames. A lifting frame connects the two sets of support frames to the corresponding positions of the packaging and sealing machine. A hand is fixedly installed near the upper end of the lifting frame, and multiple sets of insertion holes are provided on the side of the lifting frame. Bolts are inserted through the insertion holes of the support frame, and nuts are provided on the bolts. This prior art changes the height of the lifting frame and then fixes it with bolts and nuts. This alters the distance between the packaging sealing machine (equivalent to the sealing device in this invention) and the conveyor belt. The existing technology cannot adjust the height of the base and the conveyor belt. Since this type of packaging bag sealing machine is typically operated by workers sitting on small stools, and each worker's height and operating habits differ, the requirements for adjusting the height of the base and the conveyor belt also vary. The inability to adjust the height of the base and the conveyor belt can easily lead to fatigue in the lower back and back of some workers. Furthermore, the existing technology requires removing bolts, lifting the lifting frame, and then inserting and tightening the bolts when adjusting the height, which is cumbersome and requires two people: one to lift the packaging sealing machine and the other to insert and tighten the bolts.

[0005] For example, a vertical large packaging sealing machine with application number CN201510485857.1 has a sealing device fixed to the top of a column, with a groove machined in the middle of the column. A retaining plate (equivalent to the conveyor table in this invention) has a retaining seat on its rear side, which is embedded in the groove and can move up and down along the groove. After the retaining plate moves to a suitable position, the locking wheel locks onto the locking rod, fixing the retaining plate in its vertical position. In this prior art, only the retaining plate is adjustable; that is, the retaining plate can only be adjusted to accommodate the height of the bag and cannot be adjusted according to the height of the worker or their operating habits. Summary of the Invention

[0006] This invention proposes a packaging bag sealing machine, in which both the sealing device and the conveyor table are height-adjustable, making adjustment convenient and allowing one person to operate it, thus solving the aforementioned problems existing in the prior art.

[0007] The technical solution of the present invention is implemented as follows: A packaging bag sealing machine includes a base frame and a frame fixedly connected to the base frame. A conveyor table and a sealing device are provided on the front side of the frame. The sealing device is located above the conveyor table. Mounting seats are fixedly connected to the rear side of both the sealing device and the conveyor table. A controllable adjustment mechanism is provided in the mounting seat. An adjusting screw is rotatably connected between the upper side of the base frame and the frame. The upper end of the adjusting screw passes through the upper side of the frame and is connected to a rotary drive mechanism. An installation cavity is opened in the mounting seat. The controllable adjustment mechanism includes a threaded sleeve and an adjustable locking mechanism. The threaded sleeve is threadedly engaged with the adjusting screw and rotatably engaged in the installation cavity. The adjustable locking mechanism is provided on the mounting seat for fixing the threaded sleeve on the mounting seat.

[0008] Preferably, the adjustable locking mechanism includes a locking screw, and the side wall of the mounting base has a threaded hole that penetrates into the mounting cavity. The locking screw is threaded into the threaded hole, and one end of the locking screw located inside the mounting cavity is used to press against the middle outer side wall of the threaded sleeve. A throttle is connected to the other end of the locking screw located outside the mounting base.

[0009] Preferably, the mounting cavity is provided with a first bearing assembly and a second bearing assembly located on the outer walls of the upper and lower ends of the threaded sleeve, respectively. The mounting seat is threadedly connected to an upper abutment ring on the inner wall of the upper end of the mounting cavity, and the mounting seat is fixedly connected to a lower abutment ring on the inner wall of the lower end of the mounting cavity. An upper limit step and a lower limit step are respectively provided on the upper and lower sides of the threaded sleeve. The first bearing assembly is installed between the upper abutment ring and the upper limit step, and the second bearing assembly is installed between the lower abutment ring and the lower limit step.

[0010] Preferably, both the first bearing assembly and the second bearing assembly include a rolling bearing and a thrust bearing. The thrust bearing of the first bearing assembly rests against the upper limit step, and the rolling bearing of the first bearing assembly is located between the thrust bearing and the upper abutment ring. The thrust bearing of the second bearing assembly rests against the lower limit step, and the rolling bearing of the second bearing assembly is located between the thrust bearing and the lower abutment ring.

[0011] Preferably, the outer wall of the middle part of the threaded sleeve has a plurality of circumferentially formed slots, which are used to allow the end of the locking screw located in the mounting cavity to be inserted.

[0012] Preferably, the mounting base is provided with a viewing window for observing the position of the card slot.

[0013] Preferably, a light rod is fixedly connected between the base frame and the upper side of the frame frame. Two light rods are provided and are respectively located on the left and right sides of the adjusting screw. A movable guide sleeve that slides and engages with the light rod is fixedly connected to the rear side of the sealing device.

[0014] Preferably, a fixable guide sleeve assembly that slides and engages with the guide rod is fixedly connected to the rear side of the conveyor table. The fixable guide sleeve assembly includes an upper guide sleeve, a lower guide sleeve, and a fixing clamp. The conveyor table includes a rearwardly extending connecting plate. The upper and lower guide sleeves are both fixedly connected to the connecting plate. The fixing clamp is sleeved on the guide rod and located between the upper and lower guide sleeves. The fixing clamp is provided with a fixing screw.

[0015] Preferably, a support is provided between the sealing device and the conveyor table, and the support is movably connected to the smooth rod.

[0016] Preferably, the rotary drive mechanism includes a rotary handle, which is fixedly connected to the upper end of the adjusting screw.

[0017] In summary, the beneficial effects of the present invention are as follows:

[0018] 1. In this invention, an adjusting screw is rotatably connected between the base frame and the upper side of the frame, and mounting seats are fixedly connected to the rear sides of both the sealing device and the conveying table. Each mounting seat contains a threaded sleeve and an adjustable locking mechanism. The threaded sleeve is threaded onto the adjusting screw and rotatably fitted within the mounting cavity of the mounting seat. The adjustable locking mechanism is used to fix the threaded sleeve to the mounting seat. Specifically, when the adjustable locking mechanism does not fix the threaded sleeve to the mounting seat, the rotary drive mechanism rotates the adjusting screw, causing the threaded sleeve to rotate with the screw, preventing it from moving up and down on the adjusting screw. When the adjustable locking mechanism fixes the threaded sleeve to the mounting seat, the rotary drive mechanism rotates the adjusting screw, preventing the threaded sleeve from rotating with the adjusting screw. Therefore, the threaded sleeve moves up and down with the rotation of the adjusting screw, and this up-and-down movement of the threaded sleeve causes the mounting seat to move upwards. When the conveyor moves downwards, the sealing device or conveyor connected to the mounting base will also move up and down. In practical applications, when the adjustable locking mechanism of the mounting base on the rear side of the conveyor platform fixes the threaded sleeve, but the adjustable locking mechanism of the mounting base on the rear side of the sealing device does not fix the threaded sleeve, then rotating the adjusting screw will only adjust the height of the conveyor platform, and the height of the sealing device will not change. When the adjustable locking mechanism of the mounting base on the rear side of the conveyor platform does not fix the threaded sleeve, but the adjustable locking mechanism of the mounting base on the rear side of the sealing device fixes the threaded sleeve, then rotating the adjusting screw will only adjust the height of the sealing device, and the height of the conveyor platform will not change. When both the adjustable locking mechanisms of the mounting base on the rear side of the conveyor platform and the sealing device fix the threaded sleeve, then rotating the adjusting screw will cause both the conveyor platform and the sealing device to move up and down along with the threaded sleeve. In summary, the present invention can adjust the height of a single conveyor or sealing device, or adjust the height of both the conveyor and sealing devices simultaneously. The adjustment is convenient and can be completed by one person. Therefore, the present invention can adapt to bags of various sizes and can be operated by workers of various heights and operating habits. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the present invention when observed from the rear.

[0022] Figure 3 This is a schematic diagram of the structure of the present invention when observed from another rear angle;

[0023] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle;

[0024] Figure 5 This is a rear view of the present invention;

[0025] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure along the AA direction;

[0026] Figure 7 for Figure 6 A magnified view of a portion of point B in the middle;

[0027] Figure 8 This is a schematic diagram of the structure of the mounting base and controllable adjustment mechanism in this invention, which are fitted onto the adjusting screw.

[0028] Figure 9 for Figure 8 A schematic diagram of the structure after removing the mounting bracket;

[0029] Figure 10 This is a schematic diagram of the mounting base in this invention;

[0030] Figure 11 This is a schematic diagram of the threaded sleeve in this invention.

[0031] In the diagram: 1. Base frame; 2. Frame-shaped frame; 3. Conveyor table; 4. Sealing device; 5. Mounting base; 6. Adjusting screw; 7. Mounting cavity; 8. Threaded sleeve; 9. Locking screw; 10. Threaded hole; 11. Turn handle; 12. Upper stop ring; 13. Lower stop ring; 14. Upper limit step; 15. Lower limit step; 16. Rolling bearing; 17. Thrust bearing; 18. Slot; 19. Viewing window; 20. Smooth rod; 21. Movable guide sleeve; 22. Upper guide sleeve; 23. Lower guide sleeve; 24. Fixed clamp; 25. Connecting plate; 26. Fixed screw; 27. Bracket; 28. Rotary handle; 29. ​​Universal caster; 30. Conveyor belt. Detailed Implementation

[0032] The following will refer to the appendices in the embodiments of the present invention. Figure 1-11 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] Example:

[0034] like Figures 1 to 11 As shown, this invention discloses a packaging bag sealing machine, which includes a base frame 1 and a frame-shaped frame 2 fixedly connected to the base frame 1. The frame-shaped frame 2 is door frame shaped. Four universal casters 29 are connected to the lower side of the base frame 1. A conveyor table 3 and a sealing device 4 are provided on the front side of the frame-shaped frame 2. The sealing device 4 is located above the conveyor table 3. The sealing device 4 can seal the packaging bag when it passes through. The sealing device 4 is in the prior art and has been widely used in practice. Therefore, the specific structure of the sealing device 4 will not be described in detail here. The conveyor table 3 includes a conveyor belt 30, which is mainly used for conveying the packaging bag. In this invention, the sealing device 4 and the conveyor table 3... Mounting bases 5 are fixedly connected to the rear side of each component. A controllable adjustment mechanism is provided in the mounting base 5. An adjusting screw 6 is rotatably connected between the upper side of the base frame 1 and the frame 2. The upper end of the adjusting screw 6 passes through the upper side of the frame 2 and is connected to a rotary drive mechanism. The mounting base 5 has a mounting cavity 7. The controllable adjustment mechanism includes a threaded sleeve 8 and an adjustable locking mechanism. The threaded sleeve 8 is threadedly engaged with the adjusting screw 6 and rotatably engaged in the mounting cavity 7. The adjustable locking mechanism is provided on the mounting base 5 to fix the threaded sleeve 8 to the mounting base 5. It should be noted that the adjustable locking mechanism can fix the threaded sleeve 8 to the mounting base 5 and can also loosen the fixation of the threaded sleeve 8.

[0035] Specifically, the adjustable locking mechanism includes a locking screw 9. A threaded hole 10 is provided on the side wall of the mounting base 5, penetrating into the mounting cavity 7. The locking screw 9 is threaded into the threaded hole 10. One end of the locking screw 9 located inside the mounting cavity 7 is used to press against the middle outer wall of the threaded sleeve 8, and a handle 11 is connected to the other end of the locking screw 9 located outside the mounting base 5. When the end of the locking screw 9 located inside the mounting cavity 7 presses against the middle outer wall of the threaded sleeve 8, the threaded sleeve 8 is fixed on the mounting base 5. When the locking screw 9 is loosened by turning the handle 11, so that the end of the locking screw 9 located inside the mounting cavity 7 does not press against the threaded sleeve 8, the threaded sleeve 8 can rotate relative to the mounting base 5.

[0036] In other words, when the locking screw 9 does not press and fix the outer wall of the threaded sleeve 8, since the threaded sleeve 8 is rotatably fitted in the mounting cavity 7 of the mounting base 5, when the adjusting screw 6 is rotated, the threaded sleeve 8 will only rotate with the adjusting screw 6 and will not move up and down. When the locking screw 9 presses and fixes the threaded sleeve 8 on the outer wall of the threaded sleeve 8, the threaded sleeve 8 cannot rotate with the adjusting screw 6. Therefore, when the adjusting screw 6 is rotated, the threaded sleeve 8 will drive the mounting base 5 to move up and down together.

[0037] In practical use, this invention can be broadly categorized into the following three adjustment methods:

[0038] 1. When the locking screw 9 of the mounting seat 5 on the rear side of the conveyor table 3 fixes the threaded sleeve 8, but the locking screw 9 of the mounting seat 5 on the rear side of the sealing device 4 does not fix the threaded sleeve 8, then rotating the adjusting screw 6 will only adjust the height of the conveyor table 3, while the height of the sealing device 4 will not change.

[0039] 2. When the locking screw 9 of the mounting seat 5 on the rear side of the conveyor table 3 does not fix the threaded sleeve 8, but the locking screw 9 of the mounting seat 5 on the rear side of the sealing device 4 fixes the threaded sleeve 8, then rotating the adjusting screw 6 will only adjust the height of the sealing device 4, and the height of the conveyor table 3 will not change.

[0040] 3. When the locking screws 9 of the mounting base 5 on the rear side of the conveyor table 3 and the sealing device 4 are fixed to the threaded sleeve 8, the conveyor table 3 and the sealing device 4 will move up and down with the threaded sleeve 8 when the adjusting screw 6 is rotated.

[0041] In summary, the present invention can adjust the height of either the conveyor platform 3 or the sealing device 4 individually, or it can adjust the height of both the conveyor platform 3 and the sealing device 4 simultaneously. The adjustment is convenient and can be completed by one person. Therefore, the present invention can adapt to bags of various sizes and can be operated by workers of various heights and operating habits.

[0042] like Figure 7 , Figures 9 to 11 As shown, the specific structure of the threaded sleeve 8 rotating in the mounting cavity 7 is as follows: a first bearing assembly and a second bearing assembly are respectively located on the outer side walls of the upper and lower ends of the threaded sleeve 8 in the mounting cavity 7. The mounting seat 5 is threadedly connected to the upper inner side wall of the mounting cavity 7 with an upper abutment ring 12, and the mounting seat 5 is fixedly connected to the lower inner side wall of the mounting cavity 7 with a lower abutment ring 13. An upper limit step 14 and a lower limit step 15 are respectively opened on the upper and lower sides of the threaded sleeve 8. The first bearing assembly is installed between the upper abutment ring 12 and the upper limit step 14, and the second bearing assembly is installed between the lower abutment ring 13 and the lower limit step 15.

[0043] Furthermore, both the first and second bearing assemblies include a rolling bearing 16 and a thrust bearing 17. The thrust bearing 17 of the first bearing assembly rests against the upper limit step 14, while the rolling bearing 16 of the first bearing assembly is located between the thrust bearing 17 and the upper abutment ring 12. Similarly, the thrust bearing 17 of the second bearing assembly rests against the lower limit step 15, while the rolling bearing 16 of the second bearing assembly is located between the thrust bearing 17 and the lower abutment ring 13. This structure improves the smoothness of the rotational engagement of the threaded sleeve 8 within the mounting cavity 7, preventing excessive friction between the threaded sleeve 8 and the mounting seat 5. This would prevent the threaded sleeve 8 from smoothly rotating with the adjusting screw 6 even when the locking screw 9 is not fixing it, resulting in slight up-and-down movement of the mounting seat 5, making accurate adjustment difficult.

[0044] In this invention, a plurality of slots 18 are circumferentially formed on the outer wall of the middle portion of the threaded sleeve 8. These slots 18 are used to insert one end of the locking screw 9 located in the mounting cavity 7. Because the locking screw 9 is fixed by pressing against the outer wall of the threaded sleeve 8, it is easy for the locking screw 9 to slip relative to the outer wall of the threaded sleeve 8 if it is not fully tightened or if the structure is worn. In this case, the locking screw 9 cannot completely fix the threaded sleeve 8. Therefore, by forming slots 18 on the outer wall of the middle portion of the threaded sleeve 8, as long as the locking screw 9 is tightened and the end of the locking screw 9 located in the mounting cavity 7 is inserted into the slot 18, the threaded sleeve 8 can be completely fixed. At this time, the threaded sleeve 8 will not rotate relative to the mounting base 5.

[0045] To facilitate user observation of the position of the slot 18, thereby making it easier for the locking screw 9 to enter the slot 18, the mounting base 5 is provided with a viewing window 19 for observing the position of the slot 18. The viewing window 19 is located on the upper side of the locking screw 9. The slot 18 is elongated, so its position can be easily seen through the viewing window 19. It should also be noted that the width of the slot 18 is slightly larger than the diameter of the end of the screw located in the mounting cavity 7, which further facilitates the insertion of the end of the locking screw 9 located in the mounting cavity 7 into the slot 18.

[0046] In this invention, a light rod 20 is fixedly connected between the base frame 1 and the upper side of the frame frame 2. Two light rods 20 are provided and are located on the left and right sides of the adjusting screw 6 respectively. In order to ensure the stability of the sealing device 4 when it is adjusted up and down, a movable guide sleeve 21 that slides and engages with the light rod 20 is fixedly connected to the rear side of the sealing device 4.

[0047] In addition, a fixed guide sleeve assembly that slides and fits on the guide rod 20 is fixedly connected to the rear side of the conveyor table 3. The fixed guide sleeve assembly includes an upper guide sleeve 22, a lower guide sleeve 23, and a fixing clamp 24. The conveyor table 3 includes a rearwardly extending connecting plate 25. The upper guide sleeve 22 and the lower guide sleeve 23 are both fixedly connected to the connecting plate 25. The fixing clamp 24 is sleeved on the guide rod 20 and located between the upper guide sleeve 22 and the lower guide sleeve 23. A fixing screw 26 is provided on the fixing clamp 24. The fixing clamp 24 can be tightened by the fixing screw 26, thereby fixing the fixing clamp 24 to the guide rod 20. Therefore, the upper guide sleeve 22 and the lower guide sleeve 23 cannot move on the guide rod 20. This structure helps to maintain the stability of the conveyor table 3. When it is necessary to adjust the conveyor table 3, the fixing screw 26 needs to be loosened first so that the fixing clamp 24 can move relative to the guide rod 20.

[0048] In this invention, a bracket 27 is provided between the sealing device 4 and the conveyor table 3. The bracket 27 is movably connected to the light rod 20. The function of the bracket 27 is to provide support for the packaging bag so that the packaging bag will not fall backward off the conveyor table 3.

[0049] The rotary drive mechanism can be manually driven or electrically driven. In this embodiment, the rotary drive mechanism is a rotary handle 28, which is fixedly connected to the upper end of the adjusting screw 6. By rotating the rotary handle 28, the adjusting screw 6 can be driven to rotate, which is very convenient.

[0050] It should also be noted that the terms used in this invention, such as "front," "rear," "vertical," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A packaging bag sealing machine, comprising a base frame and a frame fixedly connected to the base frame, wherein a conveyor table and a sealing device are provided on the front side of the frame frame, and the sealing device is located above the conveyor table, characterized in that: The sealing device and the rear side of the conveyor table are both fixedly connected to mounting bases. Each mounting base contains a controllable adjustment mechanism. An adjusting screw is rotatably connected between the base frame and the upper side of the frame. The upper end of the adjusting screw passes through the upper side of the frame and is connected to a rotary drive mechanism. The mounting base has a mounting cavity. The controllable adjustment mechanism includes a threaded sleeve and an adjustable locking mechanism. The threaded sleeve is threaded onto the adjusting screw and rotatably engages within the mounting cavity. The adjustable locking mechanism, located on the mounting base, is used to fix the threaded sleeve to the mounting base. The adjustable locking mechanism includes a locking screw. A penetrating insertion point is provided on the side wall of the mounting base. The mounting cavity has a threaded hole, and the locking screw is threaded into the threaded hole. One end of the locking screw inside the mounting cavity is used to press against the middle outer wall of the threaded sleeve. A handle is connected to the other end of the locking screw outside the mounting base. The mounting cavity is provided with a first bearing assembly and a second bearing assembly located on the outer walls of the upper and lower ends of the threaded sleeve, respectively. An upper abutment ring is threadedly connected to the inner wall of the upper end of the mounting cavity, and a lower abutment ring is fixedly connected to the inner wall of the lower end of the mounting cavity. An upper limit step and a lower limit step are respectively provided on the upper and lower sides of the threaded sleeve. The first bearing assembly is installed between the upper abutment ring and the upper limit step. The second bearing assembly is installed between the lower abutment ring and the lower limit step. Both the first and second bearing assemblies include rolling bearings and thrust bearings. The thrust bearing of the first bearing assembly rests against the upper limit step, and the rolling bearing of the first bearing assembly is located between the thrust bearing and the upper abutment ring. The thrust bearing of the second bearing assembly rests against the lower limit step, and the rolling bearing of the second bearing assembly is located between the thrust bearing and the lower abutment ring. Several circumferentially formed slots are provided on the outer wall of the middle portion of the threaded sleeve. These slots are used to insert one end of the locking screw located within the mounting cavity. The mounting base is provided with a mechanism for adjusting the position of the slots. The observation window is provided. A light rod is fixedly connected between the base frame and the upper side of the frame. Two light rods are provided and are located on the left and right sides of the adjusting screw, respectively. A movable guide sleeve that slides and engages with the light rod is fixedly connected to the rear side of the sealing device. A fixable guide sleeve assembly that slides and engages with the light rod is fixedly connected to the rear side of the conveyor table. The fixable guide sleeve assembly includes an upper guide sleeve, a lower guide sleeve, and a fixing clamp. The conveyor table includes a rearwardly extending connecting plate. The upper and lower guide sleeves are both fixedly connected to the connecting plate. The fixing clamp is sleeved on the light rod and located between the upper and lower guide sleeves. A fixing screw is provided on the fixing clamp.

2. The packaging bag sealing machine according to claim 1, characterized in that: A support is provided between the sealing device and the conveyor table, and the support is movably connected to the smooth rod.

3. The packaging bag sealing machine according to claim 1, characterized in that: The rotary drive mechanism includes a rotary handle, which is fixedly connected to the upper end of the adjusting screw.

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