An automatic tape sealing and cutting machine

Abstract

The application provides an automatic tape cutting machine, and relates to a cutting machine which comprises two groups of side frames, a top pressing part one and a top pressing part two arranged at the two ends of the two groups of side frames, a unwinding part arranged at the top end of the two groups of side frames, a material containing groove arranged at the bottom of the two groups of side frames and used for receiving materials, and a clamping part used for clamping the first section of the tape and pulling the tape to pass through the area between the top pressing part one and the top pressing part two for clamping and positioning before cutting. The top pressing part one and the top pressing part two comprise a top roller group and a cutter group. The top roller groups of the top pressing part one and the top pressing part two are cross-distributed and used for cross-pressing the tape between the unwinding part and the clamping part to press the unwound tape into a serpentine shape. The cutter group of the top pressing part one is used for cutting the tape in cooperation with the top roller group of the top pressing part two. The cutter group of the top pressing part two is used for cutting the tape in cooperation with the top roller group of the top pressing part one. The application can realize fast cutting of the tape, and is also convenient for subsequent rewinding operation. The result is relatively simple, and the operation is relatively convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to a cutting machine, in particular to an automatic sealing tape cutting machine. BACKGROUND

[0002] When packaging products, sealing tape is needed for external sealing. The finished tape is in a whole roll, which needs to be cut into appropriate lengths, and the required amount is also relatively large every day. Therefore, a person needs to be present for cutting during production, which is time-consuming and labor-intensive. When cutting the whole roll of sealing tape according to the length of the prepared mold, errors often occur, resulting in sealing tapes of different lengths, which are very inconvenient to use.

[0003] In order to solve the above technical problems, there are currently technologies for changing manual cutting of sealing tape to machine cutting. However, the existing cutting equipment for cutting sealing tape, as shown in a kind of quantitative cutting device for rubber sealing tape of floating roof oil tank (publication number CN217971926U), pulls the sealing tape a certain distance and then pauses, and then uses a cutter to cut off. After cutting is completed, the next cycle of pulling and cutting is continued until the whole roll of sealing tape is completely cut. Although this operation is automated by the machine, it is paused each time a cut is needed. Therefore, the cutting efficiency is still not high. SUMMARY

[0004] In order to solve the above technical problems, the purpose of the present application is to provide an automatic sealing tape cutting machine, which can realize fast cutting of sealing tape and is also convenient for subsequent rewinding operation. The result is also relatively simple and the operation is relatively convenient.

[0005] The present application provides the following technical solutions:

[0006] An automatic sealing tape cutting machine, comprising two groups of side frames, a top pressing part one and a top pressing part two erected at both ends of the two groups of side frames, a unwinding part erected at the top end of the two groups of side frames, a material container groove at the bottom of the two groups of side frames for receiving material, and a clamping part for clamping the first section of the sealing tape and pulling the sealing tape through the area between the top pressing part one and the top pressing part two for clamping and positioning before cutting; the top pressing part one and the top pressing part two comprise a top roller group and a cutter group, the top roller group of the top pressing part one and the top pressing part two is cross-distributed, for cross-pressing the sealing tape between the unwinding part and the clamping part, to press the unwound sealing tape into a serpentine shape, the cutter group of the top pressing part one is used to cooperate with the top roller group in the top pressing part two to cut the sealing tape, and the cutter group of the top pressing part two is used to cooperate with the top roller group in the top pressing part one to cut the sealing tape.

[0007] At this point, each time the sealing tape is pulled, paused, and cut, the same length of the sealing tape can be obtained by the cooperation of the pressing and cutting operations. That is, the sealing tape between any two adjacent top roller groups is an equidistant single unit, and the sealing tape between the clamping part and the adjacent top roller group is the first section. Since the clamping part rises by the same height each time, the length of the hanging end of the first section of the sealing tape is constant. Therefore, by setting the height of the clamping part, the length of the first section of the sealing tape can be ensured to be a standard length each time. Thus, the same number of sealing tapes can be obtained each time, thereby improving the cutting efficiency. Since the two ends of the cut sealing tape are not supported, the cut sealing tape can freely fall into the lower container groove.

[0008] Preferably, the pressing part one and the pressing part two further comprise positioning blocks positioned between the two groups of side frames. The top roller group comprises a pressing roller, a fixed shaft arranged at both ends of the pressing roller, and a pressing rod arranged outside the fixed shaft. The pressing rod is connected to the driving end block of the pressing cylinder through the positioning block. Therefore, by starting the pressing cylinder, the driving end block can synchronously drive the pressing rod and the pressing roller at the end of the pressing rod to reciprocate. The pressing rollers of the pressing part one and the pressing part two are arranged in a cross shape. Therefore, when the pressing rollers of the pressing part one and the pressing part two move to the opposite sides at the same time after the first end of the sealing tape is clamped and lowered by the clamping part, the pressing rollers form a cross shape to achieve the snake-shaped distribution of the sealing tape and form the same length of the section during cutting.

[0009] Preferably, the fixed shaft is fixedly installed at the end of the pressing roller, and the pressing rod is fixedly installed outside the fixed shaft. The pressing roller is further provided with a cutting groove. The cutting groove of the pressing part one is arranged opposite the cutter group of the pressing part two. The cutting groove of the pressing part two is arranged opposite the cutter group of the pressing part one. The cutting groove avoids damage to the surface of the pressing roller caused by frequent cutting, thereby avoiding scratches on the surface of the sealing tape.

[0010] Preferably, the cutter group comprises a plurality of cutter bodies inserted and installed in the positioning block and a push rod for fixing the installation end of the cutter body and being pushed out of the positioning block by the cutting cylinder to cut the sealing tape on the pressing roller. The cutter body of the pressing part one corresponds to the pressing roller of the cutter group two. The cutter body of the pressing part two corresponds to the pressing roller of the cutter body one. Therefore, when the number of cutter bodies is large, the driving device of the cutter body can be greatly simplified.

[0011] Preferably, the unwinding part comprises a bottom plate, a sliding plate, an unwinding support and an unwinding drum, the bottom plate is fixedly arranged at the top ends of the two groups of side frames, a sliding groove is formed in the top of the bottom plate, the bottom end of the sliding plate is slidingly connected in the sliding groove, a latch is arranged on the bottom plate and located at the two ends of the sliding plate for limiting the sliding plate at the working position, the unwinding support is provided with two groups and is fixedly arranged on the sliding plate, the unwinding drum with the sealing tape is connected between the two groups of unwinding supports, when the sliding plate slides to the working position, the first section on the unwinding drum freely falls between the two groups of side frames for clamping and pulling by the clamping part, since the sliding plate can drive the unwinding drum to slide to the working position as a whole, after the unwinding is completed, the new sliding plate, unwinding support and unwinding drum can be directly slid to the working position again, so that the replacement and maintenance are more convenient.

[0012] Preferably, the unwinding part further comprises a vertical rod, an extension block and a guide roller, the guide roller is provided with two groups of abutting arrangements, the two ends of the guide roller are connected to the end of the vertical rod and are connected to the extension block on one side of the sliding plate through the vertical rod, the sealing tape on the unwinding drum passes between the two groups of guide rollers and falls between the two groups of side plates, and the two groups of side plates are provided with notches for the sliding of the vertical rod and the guide roller, at this time, the guide roller is added to clamp the end of the sealing tape, so that the sealing tape is not easily deviated from the clamping range of the clamping part due to the light weight.

[0013] Preferably, the unwinding support is further provided with an unwinding motor for driving the unwinding drum to rotate for unwinding the sealing tape, at this time, the unwinding motor can be controlled by interlocking to quantitatively unwind, so as to further reduce the probability of affecting the cutting length of the first section due to the influence of the external environment.

[0014] Preferably, the clamping part comprises two groups of clamping rollers, a jacking cylinder, a base block, a clamping lead screw and a clamping block, the two groups of clamping rollers are arranged side by side and used for clamping the first end of the sealing tape located in the middle, short shafts are fixedly connected to the two ends of the clamping rollers, the clamping blocks are fixedly arranged outside the short shafts one by one, the two groups of adjacent clamping blocks are slidingly connected to the base block of the driving end of the jacking cylinder, and are driven to move in opposite directions by the clamping lead screw, so as to drive the clamping rollers to approach the first end of the sealing tape clamped in the middle, and the clamping motor is arranged on the base block and used for driving the clamping lead screw to rotate.

[0015] Preferably, the end of the fixed shaft extends into the guide groove of the side plate, so that when the pressing roller reciprocates, the burden of the suspended end of the pressing rod can be reduced.

[0016] The beneficial effects of the present application are:

[0017] In the present application, since the top rollers of the first and second top pressing portions are cross-distributed, when the top pressing rollers of the first and second top pressing portions move to the opposite side at the same time after the first end of the sealing tape is clamped and positioned by the clamping portion, the cross form can be formed to achieve the sealing tape in a serpentine distribution to form the same length of the segmented cutting; and the sealing tape can be pulled and paused by the clamping portion every time to cooperate with the operation of the top pressing and cutting to obtain the sealing tape after the same length of the segmented cutting, i.e., the sealing tape between any two adjacent top roller groups is the same length of the segmented cutting tape unit, and the sealing tape between the clamping portion and the adjacent top roller group is the first segment. Since the clamping portion has the same height every time it is raised, the length of the hanging end of the first segment of the sealing tape is constant when the clamping portion is clamped, so by setting the height of the clamping portion, the length of the first segment of the sealing tape can also be a standard length every time it is cut, so that the same number of segmented sealing tapes can be obtained every time the cutting is paused, thereby improving the cutting efficiency, and the cut sealing tape can freely fall into the lower container groove since the two ends are no longer supported. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate embodiments of the present application and explain the present application, and do not constitute a limitation of the present application. In the drawings:

[0019] Figure 1 is a schematic view of the structure inside the two groups of side plates in the present application;

[0020] Figure 2 is a schematic view of the structure of the top pressing roller in the present application; Figure 1 is a sectional view along A-A of the structure in the present application;

[0021] Figure 3 is a schematic view of the top pressing roller top pressing the sealing tape from above;

[0022] Figure 4 is a schematic view of the top pressing roller top pressing the sealing tape from above;

[0023] Figure 5 is a schematic view of the top pressing roller top pressing the sealing tape from above; Figure 1 is a sectional view along A-A of the structure in the present application;

[0024] Markings in the drawings:

[0025] 1. Side frame; 2. Top pressing section one; 3. Top pressing section two; 4. Unwinding section; 5. Material trough; 6. Clamping section; 7. Top roller assembly; 8. Cutting knife assembly; 9. Positioning block; 10. Sealing tape; 71. Top pressure roller; 72. Fixed shaft; 73. Top pressure rod; 74. Top pressure cylinder; 75. Drive end block; 76. Cutting groove; 77. Guide groove; 81. Cutting knife body; 82. Push rod; 41. Base plate; 42. Slide plate; 43. Unwinding bracket; 44. Unwinding drum; 45. Pin; 46. Vertical rod; 47. Extension block; 48. Guide roller; 49. Unwinding motor; 61. Clamping roller; 62. Lifting cylinder; 63. Base block; 64. Clamping screw; 65. Clamping block. Detailed Implementation

[0026] Example 1

[0027] like Figures 1-4 As shown, an automatic sealing tape cutting machine, in this embodiment, includes two sets of side frames 1, a first pressing part 2 and a second pressing part 3 mounted at both ends of the two sets of side frames 1, a unwinding part 4 mounted at the top of the two sets of side frames 1, a material receiving trough 5 located at the bottom of the two sets of side frames 1 for receiving material, and a clamping part 6 for clamping the first section of the sealing tape 10 and pulling the sealing tape 10 through the area between the first pressing part 2 and the second pressing part 3 for pre-cutting clamping and positioning; the first pressing part 2 and the second pressing part 3 are also included. The second part 3 includes a top roller group 7 and a cutter group 8. The top roller groups 7 of the first pressing part 2 and the second pressing part 3 are cross-distributed and are used to cross-press the sealing tape 10 between the unwinding part 4 and the clamping part 6 to press the unwinding sealing tape 10 into a serpentine shape. The cutter group 8 of the first pressing part 2 is used to cooperate with the top roller group 7 in the second pressing part 3 to cut the sealing tape 10. The cutter group 8 of the second pressing part 3 is used to cooperate with the top roller group 7 in the first pressing part 2 to cut the sealing tape 10.

[0028] Thus, each time the sealing tape 10 is pulled and paused, it can be combined with the pressing and cutting operations to obtain multiple sections of the same length of the cut sealing tape 10. That is, the sealing tape 10 between any two adjacent top roller groups 7 is an equidistant section, and the sealing tape 10 between the clamping part 6 and the adjacent top roller group 7 is the first section. During clamping, since the clamping part 6 rises to the same height each time, the length of the suspended end of the clamped sealing tape 10 is constant. Therefore, by setting the height of the clamping part 6 to rise and position, it can be ensured that the length of the first section of the sealing tape 10 is also the standard length each time it is cut. Thus, each time the cutting is paused, the same number of multiple sections of sealing tape 10 can be obtained, thereby improving the cutting efficiency. Since the cut sealing tape 10 has no support at both ends, it can fall freely into the material trough 5 below.

[0029] The top pressing part one 2 and the top pressing part two 3 further comprise positioning blocks 9 positioned between the two groups of side frames 1, the top roller group 7 comprises a top pressing roller 71, fixed shafts 72 arranged at both ends of the top pressing roller 71, and top pressing rods 73 fixedly installed outside the fixed shafts 72, the top pressing rods 73 are connected with driving end blocks 75 of a top pressing cylinder 74 through the positioning blocks 9, therefore, by starting the top pressing cylinder 74, the top pressing roller 71 at the end of the top pressing rod 73 can be driven to reciprocate synchronously through the driving end block 75, and the top pressing rollers 71 of the top pressing part one 2 and the top pressing part two 3 are arranged in a cross shape, therefore, after the first end of the sealing tape 10 clamped by the clamping part 6 is lowered and positioned, the top pressing rollers 71 of the top pressing part one 2 and the top pressing part two 3 are simultaneously moved to the opposite side, so as to form a cross shape, so as to achieve the serpentine distribution of the sealing tape 10, and to form segments with the same length during cutting.

[0030] The fixed shafts 72 are fixedly installed at the ends of the top pressing roller 71, and the top pressing rods 73 are fixedly installed outside the fixed shafts 72, and the top pressing roller 71 is further provided with a cutting groove 76, the cutting groove 76 of the top pressing part one 2 is arranged opposite to the cutter group 8 of the top pressing part two 3, and the cutting groove 76 of the top pressing part two 3 is arranged opposite to the cutter group 8 of the top pressing part one 2, and the cutting groove 76 is arranged, so as to avoid the damage to the surface of the top pressing roller 71 caused by frequent cutting, thereby avoiding the scratches on the surface of the sealing tape 10 caused by the cutting marks.

[0031] The cutter group 8 comprises a plurality of cutter bodies 81 insertedly installed in the positioning blocks 9 and push rods 82 for being fixedly installed at the installation ends of the cutter bodies 81 and being pushed out of the positioning blocks 9 by a cutting cylinder to cut the sealing tape 10 on the top pressing roller 71, the cutter bodies 81 of the top pressing part one 2 correspond to the top pressing rollers 71 of the top pressing part two 3 one by one, and the cutter bodies 81 of the top pressing part two 3 correspond to the top pressing rollers 71 of the top pressing part one 2 one by one, so that when the number of the cutter bodies 81 is large, the driving equipment of the cutter bodies 81 can be greatly simplified.

[0032] The unwinding part 4 comprises a bottom plate 41, a sliding plate 42, unwinding supports 43 and an unwinding drum 44, the bottom plate 41 is fixedly installed at the top ends of the two groups of side frames 1, and a sliding groove is arranged at the top of the bottom plate 41, the bottom end of the sliding plate 42 is slidingly installed in the sliding groove, and the bottom plate 41 is further provided with a latch 45 for limiting the sliding plate 42 at the working position at both ends of the sliding plate 42, the unwinding supports 43 are provided in two groups and are fixedly installed on the sliding plate 42, and the unwinding drum 44 wound with the sealing tape 10 is connected and installed between the two groups of unwinding supports 43, when the sliding plate 42 slides to the working position, the first segment on the unwinding drum 44 freely falls between the two groups of side frames 1 for being clamped and pulled by the clamping part 6, since the sliding plate 42 can drive the unwinding drum 44 to slide to the working position as a whole, after the unwinding is completed, the new sliding plate 42, unwinding supports 43 and unwinding drum 44 can be directly slid to the working position again, therefore, the replacement and maintenance are more convenient.

[0033] The unwinding part 4 further comprises a vertical rod 46, an extension block 47 and guide rollers 48. The guide rollers 48 are provided in two groups and are rotatably connected to the ends of the vertical rod 46 and the extension block 47 on one side of the sliding plate 42. The sealing tape 10 on the unwinding drum 44 falls between the two groups of guide rollers 48 and between the two groups of side plates. The vertical rod 46 and the guide rollers 48 slide through the gaps in the two groups of side plates. The guide rollers 48 clamp the end of the falling sealing tape 10, so that the sealing tape 10 is not easily deviated from the clamping range of the clamping part 6 due to its light weight.

[0034] The unwinding support 43 is further provided with an unwinding motor 49 for driving the unwinding drum 44 to rotate to unwind the sealing tape 10. The unwinding motor 49 is interlocked to control the quantitative unwinding, so as to further reduce the probability of affecting the cutting length of the first section due to the influence of the external environment.

[0035] The clamping part 6 comprises two groups of clamping rollers 61, a jacking cylinder 62, a base block 63, a clamping lead screw 64 and clamping blocks 65. The two groups of clamping rollers 61 are arranged side by side and are used to clamp the first end of the sealing tape 10 therebetween. The clamping blocks 65 are fixed on the outer sides of the short shafts at the two ends of the clamping rollers 61. The adjacent two groups of clamping blocks 65 are slidingly connected to the base block 63 on the driving end of the jacking cylinder 62 and are driven by the clamping lead screw 64 to move in opposite directions, so as to drive the clamping rollers 61 to move close to the first end of the sealing tape 10 clamped therebetween. The base block 63 is further provided with a clamping motor for driving the clamping lead screw 64 to rotate.

[0036] Embodiment 2

[0037] As shown in Figure 5 , an automatic sealing tape cutting machine. In this embodiment, the difference from embodiment 1 is that the end of the fixed shaft 72 extends into the guide groove 77 of the side plate. Therefore, when the top pressing roller 71 reciprocates, the burden on the suspended end of the top pressing rod 73 can be reduced.

[0038] The working principle of the present application is: in the present application, since the top pressing rollers 71 of the top pressing part one 2 and the top pressing part two 3 are cross arranged, after the first end of the sealing tape 10 is clamped and positioned by the clamping part 6, when the top pressing rollers 71 of the top pressing part one 2 and the top pressing part two 3 move to the opposite side at the same time, the cross form can be formed, so as to achieve the serpentine distribution of the sealing tape 10, and to form the segmented cutting with the same length. And every time the clamping part 6 pulls and stops the sealing tape 10, it can cooperate with the operation of top pressing and cutting to obtain the sealing tape 10 after cutting with the same length, that is, the sealing tape 10 between any two adjacent top roller groups 7 is a segmented sealing tape 10 unit length with equal distance, and the sealing tape 10 between the clamping part 6 and the adjacent top roller group 7 is the first segment. Since the clamping part 6 rises by the same height every time, the length of the hanging end of the first segment of the sealing tape 10 is certain when clamping, so by setting the height of the clamping part 6, the length of the first segment of the sealing tape 10 can also be a standard length every time cutting, so that the same number of sealing tapes 10 can be obtained every time cutting, so as to improve the cutting efficiency, and the sealing tape 10 after cutting has no support at both ends, so as to freely fall into the material tank 5 below.

[0039] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A tape sealing and automatic cutting machine, characterized by, The device comprises two groups of side frames (1), a top pressing part one (2) and a top pressing part two (3) erected at the two ends of the two groups of side frames (1), a unwinding part (4) erected at the top ends of the two groups of side frames (1), a material containing groove (5) at the bottom of the two groups of side frames (1) for receiving materials, and a clamping part (6) for clamping the first section of the sealing belt (10) and pulling the sealing belt (10) through the area between the top pressing part one (2) and the top pressing part two (3) for clamping and positioning before cutting; The top pressing part one (2) and the top pressing part two (3) comprise a top roller group (7) and a cutter group (8), the top roller group (7) of the top pressing part one (2) and the top pressing part two (3) is cross-distributed, used for cross-pressing the sealing belt (10) between the unwinding part (4) and the clamping part (6), so as to press the unwound sealing belt (10) into a serpentine shape, the cutter group (8) of the top pressing part one (2) is used for cutting the sealing belt (10) in cooperation with the top roller group (7) in the top pressing part two (3), and the cutter group (8) of the top pressing part two (3) is used for cutting the sealing belt (10) in cooperation with the top roller group (7) in the top pressing part one (2); The top pressing part one (2) and the top pressing part two (3) further comprise a positioning block (9) positioned between the two groups of side frames (1), the top roller group (7) comprises a top pressing roller (71), a fixed shaft (72) arranged at both ends of the top pressing roller (71), and a top pressing rod (73) erected and installed outside the fixed shaft (72), and the top pressing rod (73) is connected with a driving end block (75) of a top pressing cylinder (74) through the positioning block (9); The fixed shaft (72) is fixedly installed at the end of the top pressing roller (71), the top pressing rod (73) is fixedly installed outside the fixed shaft (72), and a cutting groove (76) is further formed in the top pressing roller (71), the cutting groove (76) of the top pressing part one (2) is arranged opposite to the cutter group (8) of the top pressing part two (3), and the cutting groove (76) of the top pressing part two (3) is arranged opposite to the cutter group (8) of the top pressing part one (2); The cutter group (8) comprises a plurality of cutter bodies (81) inserted and installed in the positioning block (9) and a push rod (82) for being fixed at the installation end of the cutter body (81) and being pushed out of the positioning block (9) by a cutting cylinder to cut the sealing belt (10) on the top pressing roller (71), the cutter body (81) of the top pressing part one (2) corresponds to the top pressing roller (71) of the cutter group (8) one by one, and the cutter body (81) of the top pressing part two (3) corresponds to the top pressing roller (71) of the cutter body (81) one by one. The unwinding part (4) comprises a bottom plate (41), a sliding plate (42), unwinding supports (43) and an unwinding drum (44), the bottom plate (41) is fixedly arranged at the top ends of the two groups of side frames (1), a sliding groove is formed in the top of the bottom plate (41), the bottom end of the sliding plate (42) is slidingly connected in the sliding groove, a latch (45) is arranged on the bottom plate (41) for limiting the sliding plate (42) at the working position, the two groups of unwinding supports (43) are fixedly arranged on the sliding plate (42), the unwinding drum (44) with the sealing tape (10) is arranged between the two groups of unwinding supports (43), when the sliding plate (42) slides to the working position, the first section of the sealing tape (10) on the unwinding drum (44) freely falls between the two groups of side frames (1) for being clamped and pulled by the clamping part (6); The unwinding part (4) further comprises vertical rods (46), extension blocks (47) and guide rollers (48), the two groups of guide rollers (48) are arranged in abutment, the two ends of the guide rollers (48) are pivotally connected to the ends of the vertical rods (46), the extension blocks (47) are connected to one side of the sliding plate (42) through the vertical rods (46), the sealing tape (10) on the unwinding drum (44) passes between the two groups of guide rollers (48) and falls between the two groups of side plates, and the vertical rods (46) and the guide rollers (48) slidingly pass through the notches formed in the two groups of side plates; The clamping part (6) comprises two groups of clamping rollers (61), a jacking cylinder (62), a base block (63), a clamping lead screw (64) and clamping blocks (65), the two groups of clamping rollers (61) are arranged side by side for clamping the first end of the sealing tape (10) therebetween, short shafts are fixedly connected to the two ends of the clamping rollers (61), the clamping blocks (65) are fixedly arranged outside the short shafts one by one, the base block (63) is slidingly connected to the driving end of the jacking cylinder (62) between the two adjacent clamping blocks (65), the clamping lead screw (64) drives the two adjacent clamping blocks (65) to move in opposite directions to drive the clamping rollers (61) to move close to the first end of the sealing tape (10) clamped therebetween, the base block (63) further comprises a clamping motor for driving the clamping lead screw (64) to rotate; The end of the fixed shaft (72) extends into the guide groove (77) of the side plate.

2. The automatic tape cutting machine according to claim 1, wherein The unwinding motor (49) is arranged on the unwinding support (43) for driving the unwinding drum (44) to rotate to unwind the sealing tape (10), at this time, the unwinding motor (49) can be controlled to unwind quantitatively.

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