CN210942525U - Adhesive tape sealing machine suitable for bonding bent parts - Google Patents

Abstract

A tape sealing machine suitable for bonding a bent part is characterized in that a front tape guide wheel and a rear tape guide wheel which can rotate along a rotating shaft of the front and rear guide wheels are arranged at the tail end of a labor saving arm of a tape guide arm, a cutter is arranged on the rear side of an upper opening of an upper horizontal plane, and the blade surface of the cutter is positioned below the upper opening; the adhesive tape guide arm can overcome the tension of a traction mechanism at the end of a labor-consuming arm, and takes an adhesive tape guide arm fulcrum shaft on a side wall plate of the rack as a rotating fulcrum shaft to drive the front and rear adhesive tape guide wheels to move circumferentially and sink towards an upper opening, so that the front and rear adhesive tape guide wheels sink to the front lower side and the rear side of the cutter respectively. After the sealing machine is used for sealing and adhering the bent parts of the folded angle and the arc-shaped surface between two or more adhered objects, no adhesive tape embossing is generated, the operation in the adhering process is simple, and the sealing machine is particularly suitable for sealing and adhering the bent parts at the box opening.

Description

Adhesive tape sealing machine suitable for bonding bent parts

Technical Field

The utility model relates to a sticky tape involution ware technical field, concretely relates to be suitable for sticky tape capper of portion of bending bonding.

Background

The applicant previously filed a patent of utility model with application number 201921475797.5, entitled tape sealing machine suitable for bonding of bending part, which can not generate adhesive tape relief after the cover at the bending part of the bending angle and the arc surface between two or more pasted objects is bonded, and the adhesive tape sealing machine is simple in operation in the bonding process, and is especially suitable for the cover at the box opening part of the bending part to be bonded.

The applicant finds that the product still has space for improvement after manufacturing, in the prior design, a tape cutting mechanism formed by mutually connecting a cutter cover and a cutter seat through an elastic hinge is adopted, the arrangement scheme that the cutter blade face is arranged above an upper opening is adopted, and when an operator pushes a box body to perform tape bonding in front, certain risk of cutting hands or the box body still exists when the operation is careless; in addition, a single adhesive tape guide wheel is arranged at the tail end of the force saving arm of the adhesive tape guide arm, and is matched with elastic loose-leaf to make forward elastic circumferential rotation, so that the scheme that the sliding roller presses the adhesive tape on the cutter seat is adopted, the forward reset resilience of the elastic loose-leaf needs to be controlled within a reasonable range, so that the adhesive tape bonding of the bending part of the box body by an operator is smoother, the additional increase of the pushing force is needed when the elastic force is too large, the insufficient pressing and bonding force of the adhesive tape is needed when the elastic force is too small, the elastic range of the elastic loose-leaf needs to be reasonably controlled and debugge.

Disclosure of Invention

The invention aims to provide a tape sealing machine which can avoid accidental cutting operation and has a simpler structure and is suitable for bonding bent parts on the basis of the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme to implement:

a tape sealing machine suitable for bonding a bent part comprises a tape unwinding mechanism, a tape transmission mechanism and a cutter, wherein the tape unwinding mechanism, the tape transmission mechanism and the cutter are arranged on a rack; the adhesive tape is bonded with the adhesive tape pre-tightening mechanism through at least two bonding positions, so that the adhesive tape between the bonding positions is in a tight state without contacting with foreign objects, the tail end of a labor-saving arm of the adhesive tape is provided with a front adhesive tape guide wheel and a rear adhesive tape guide wheel which can rotate along a rotating shaft of the front and rear guide wheels, the rear side of an upper opening of an upper horizontal plane is provided with a cutter, and the blade surface of the cutter is positioned below the upper opening; the adhesive tape guide arm can overcome the tension of a traction mechanism at the end of a labor-consuming arm, and takes an adhesive tape guide arm fulcrum shaft on a side wall plate of the rack as a rotating fulcrum shaft to drive the front and rear adhesive tape guide wheels to move circumferentially and sink towards an upper opening, so that the front and rear adhesive tape guide wheels sink to the front lower side and the rear side of the cutter respectively.

Furthermore, the guide arm limiting mechanism comprises a front guide arm limiting mechanism and a rear guide arm limiting mechanism, and the front guide arm limiting mechanism and the rear guide arm limiting mechanism limit the maximum front swing amplitude and the maximum rear swing amplitude of the adhesive tape guide arm to overcome the pulling force of the traction mechanism; when the maximum back swing amplitude is reset to the maximum front swing amplitude, the distance between the bonding position on the last side and the bonding position on the foremost side is increased, and the distance error between the cutter and the rear adhesive tape guide wheel is +/-1 cm when the maximum back swing amplitude is reached.

Furthermore, when the maximum front swing amplitude is reached, the common tangent plane of the front sides of the front and the rear adhesive tape guide wheel roller surfaces forms an angle of 30-90 degrees with the front side of the upper horizontal surface.

Furthermore, the front guide arm limiting mechanism is a limiting pin arranged on the rack, and a damping surface is arranged on the surface of the limiting pin.

Furthermore, when the cutter is arranged on the cutter seat, and the front adhesive tape guide wheel and the rear adhesive tape guide wheel sink to the front lower side and the rear upper side of the cutter respectively, the adhesive tape guide arm is blocked by the cutter seat to form a rear end guide arm limiting mechanism.

Furthermore, an auxiliary arm is further arranged and is used for fixing the front guide wheel rotating shaft and the rear guide wheel rotating shaft.

As an effective embodiment, the adhesive tape conveying mechanism further comprises a guide adjusting mechanism, a first adhesive tape guide roller of the guide adjusting mechanism is arranged at the rotating end of the guide arm, and the adhesive surface of the adhesive tape and the first adhesive tape guide roller are adhered to each other to form a first adhesion position; a second adhesive tape guide roller of the guide adjusting mechanism is adjustably arranged on the rack through a tension adjusting chute and is mutually pressed with the non-adhesive surface of the adhesive tape; the guide arm is provided with an arc-shaped sliding groove, and a sliding pin arranged on the adhesive tape guide arm slides along the sliding groove and drives the guide arm to rotate circumferentially along a guide arm fulcrum shaft on the rack. Through setting up the setting of second sticky tape deflector roll and tension regulation spout, can conveniently adjust the tension range of sticky tape section, accommodation process is convenient swift.

Of course, in the present invention, the installation scheme in the prior art can be also adopted, the installation frame comprises an upper cover, a lower seat, a side door and a side wall plate, the upper plane of the upper cover is horizontal, and the upper opening is arranged at the front end of the upper cover;

in a similar way, by adopting the arrangement of the prior art, the adhesive tape pre-tightening mechanism further comprises an adhesive tape pressing mechanism arranged on the tension arm of the adhesive tape guide arm, the adhesive tape pressing mechanism pulls the pressing tongue through the traction piece to enable the tail end of the pressing tongue to press the baffle and clamp the adhesive tape, and the adhesive surface of the adhesive tape and the tail end of the pressing tongue form a second adhesive position.

Furthermore, the tail end of the spatula is a concave V-shaped opening, and the joint surface of the baffle and the tail end of the spatula is a V-shaped convex surface matched with the V-shaped opening.

In a similar way, the arrangement of the prior art is adopted, the side wall plate of the rack is provided with a fixed pin, the labor-consuming arm of the adhesive tape guide arm is provided with a traction pin, and the spring, the fixed pin and the traction pin form the traction mechanism.

The utility model discloses at least, have following useful part:

1. the sealing machine has a simple structure, does not need electricity as a power source, is simple and convenient to use, can complete bonding only by placing an adhered object on an upper horizontal plane, aligning the adhesive tape and horizontally pushing, and has no learning cost in the operation process;

2. when the adhesive tape covers and adheres to an object to be adhered, such as a folded angle bending part, when the adhesive tape guide arm presses down along the circumference of the adhesive tape guide arm fulcrum shaft, the tensile force of a spring from the end of a labor-consuming arm needs to be overcome, so that the front adhesive tape guide forms sufficient extrusion force to the adhesive tape to adhere to the first surface tightly; after the adhesive tape guide wheel sinks below the upper sliding surface from the upper opening, the first surface continuously pulls the adhesive tape, the adhesive tape section from the first bonding position to the second bonding position and the adhesive tape adhered to the adhered object slide along the adhesive tape guide wheel to the adhesive tape section of the first bonding position in a tight state, the adhesive tape guide wheel continuously rolls along the folding angle edge of the bending part, and smoothly passes through the right angle edge and then keeps pressing the second surface to the adhesive tape to be cut by the adhesive tape cutting mechanism, the adhesive tape section can smoothly cover and adhere the bending part of the adhered object, and the adhesive tape guide wheel can gradually move downwards in the circumference direction of the adhesive tape guide arm to attach and smooth the adhesive tapes on the first surface and the second surface, so that the adhesive tape is not embossed;

3. when the adhesive tape is used for covering and pasting an object to be pasted, such as an arc-shaped surface bending part, when the adhesive tape guide arm is pressed down along the circumference of the adhesive tape guide arm fulcrum shaft, the spring tension from the arm end which is hard to draw needs to be overcome, so that the front adhesive tape guide wheel forms sufficient extrusion force on the adhesive tape to stick the arc-shaped surface tightly, and in the process that the front adhesive tape guide wheel sinks to the lower part of the upper sliding surface from the upper opening, the adhesive tape guide wheel keeps the sticking arc-shaped surface to move, the adhesive tape smoothly covers and pastes the arc-shaped surface until the adhesive tape is cut by the adhesive tape cutting mechanism, the adhesive tape section can be controlled to smoothly cover and paste the arc-shaped surface of the object to be pasted in the process, the rear adhesive tape guide wheel keeps smoothing the adhesive tape, and the;

4. the adhesive tape cutting mechanism is reasonably arranged, and the blade face of the adhesive tape cutting mechanism is arranged at the rear lower part of the upper opening, so that the risk of cutting hands or the box body when an operator pushes the box body forwards to bond the adhesive tape can be effectively prevented, and the blade face protection structure and the adhesive tape smoothing mechanism which are formed by an elastic loose leaf, a cutter cover and a sliding roller, have complicated structures and high arrangement cost can be omitted;

5. the tail end of the pressing tongue provided with the adhesive tape pressing mechanism is provided with a concave V-shaped opening, the baffle and the tail end of the pressing tongue are laminated to form a V-shaped convex surface matched with the V-shaped opening, and the V-shaped opening and the V-shaped convex surface are matched with each other, so that the bonding position of the V-shaped opening can be further improved, the tightness of an adhesive tape section between adjacent bonding positions of the V-shaped opening can be further improved, and the phenomenon that the adhesive tape section is softened when the last unwinding stage of the adhesive tape and the sealing machine are stopped for a long time can be particularly prevented.

Drawings

FIG. 1 is a schematic view of the side door of the present invention being opened in a normal state;

FIG. 2 is a schematic view of the side door of the present invention being opened in a pressed state;

fig. 3 is a schematic view of the exploded state of the present invention;

FIG. 4 is a schematic view of the utility model with the hatch and the upper cover hidden under normal state;

fig. 5 is a schematic view of the utility model with the cabin door and the upper cover hidden under the pressed state.

Detailed Description

The invention is further illustrated by the following specific examples.

Examples

As shown in fig. 1-5, a tape sealing machine suitable for bonding a bent portion includes a frame 1 formed by combining an upper cover 11, a side wall plate 12, a side door 13, and a lower seat 14, and a tape unwinding mechanism, a tape transmission mechanism, and a cutter 42 mounted on a cutter holder 41 in an adjustable manner, the upper cover 11 of the frame 1 of the sealing machine is in a horizontal plane shape, the upper cover 11 is provided with an upper opening 110, the upper cover 11 and the lower seat 14 are mutually clamped and fixed by a locking member to form the "Contraband" shaped side wall plate 12, and the side wall plate 12 is sealed by a movable side door 13; a common adhesive tape roll shaft 5 is arranged on a side wall plate 12 of the frame 1 to serve as an adhesive tape unwinding mechanism, and an adhesive tape roll sleeved on the adhesive tape roll shaft 5 can be unwound along the adhesive tape roll shaft 5 in a rotating manner when the adhesive tape is pulled; the adhesive tape transmission mechanism comprises an adhesive tape guide arm 21, a traction mechanism 3 and a limiting mechanism;

the adhesive tape guide arm 21 is in a crank arm shape with a folding angle α of 80 degrees to 100 degrees, an adhesive tape guide arm fulcrum shaft 212 on the side wall plate 12 of the machine frame 1 is arranged in the middle of a front crank of the adhesive tape guide arm 21 and is used as a rotating fulcrum shaft of the adhesive tape guide arm 21, and the adhesive tape guide arm 21 is divided into a waste force arm 211 and a saving force arm 213 by taking the adhesive tape guide arm fulcrum shaft 212 as a dividing point;

the adhesive tape pre-tightening mechanism is arranged on the same side of the labor-saving arm 213 of the adhesive tape guide arm 21, a front adhesive tape guide wheel 222 capable of rotating along the front guide wheel rotating shaft 221 is arranged on the front side of the tail end of the labor-saving arm 213 of the adhesive tape guide arm 21, and a rear adhesive tape guide wheel 222 'capable of rotating along the rear guide wheel rotating shaft 221' is arranged at the tail end;

the side wall plate 12 of the frame 1 is provided with a fixing pin 33 at the lower side of the front part, the fixing pin 33 can be mutually locked with a fixing pin adjusting gear 34 in a sliding way through a nut, so that the fixing pin 33 can be adjusted in the gear on the longitudinal direction, and the rotation amplitude of the adhesive tape guide arm 21 can be effectively expanded or reduced; the lower buckle part of the spring 32 is buckled with the fixed pin 33, the upper buckle part of the spring 32 is buckled with the traction pin 31 arranged at the tail end of the labor-saving arm 211 of the adhesive tape guide arm 21, and therefore the spring 32, the fixed pin 33 and the traction pin 31 form the traction mechanism 3;

the side wall plate 12 of the frame 1 is provided with a limit pin 71, the limit pin 71 is arranged at the front end of the fixed pin 33 and is arranged between the fixed pin 33 and the traction pin 31 in height, the surface of the limit pin 71 is provided with a damping surface, and when the adhesive tape guide arm 21 rotates forwards along the adhesive tape guide arm fulcrum shaft 212, the limit pin 71 forms a front guide arm limit mechanism for limiting the maximum front swinging amplitude of the adhesive tape guide arm 21 force arm 211 against the pulling force of the traction mechanism; when the cutting blade 42 is disposed on the cutting blade seat 41, and the front tape guide wheel 222 sinks to the front lower side of the cutting blade 42 and the rear tape guide wheel 222' sinks to the rear upper side of the cutting blade 42, the force saving arm 213 of the tape guide arm 21 is blocked by the cutting blade seat 41 to form a rear end guide arm limiting mechanism, and when the tape guide arm 21 rotates backward along the tape guide arm fulcrum shaft 212, the rear guide arm limiting mechanism limits the maximum backward swinging amplitude of the tape guide arm 21 against the pulling force of the pulling mechanism. As shown in fig. 4, when the tape guide arm 21 is located at the maximum forward swing range, the included angle γ between the common tangent plane of the front side of the roller surface of the front tape guide wheel 222' and the rear tape guide wheel 222 and the front side of the upper horizontal plane is 90 °, which is suitable for bonding the sealing box 6 with a right-angled bending part; when the sealing box 6 with the acute-angle bending part needs to be bonded, an included angle gamma between a common tangent plane of the front side of the roller surface of the front adhesive tape guide wheel 222' and the rear adhesive tape guide wheel 222 and the front side of the upper horizontal plane is an acute angle, and the included angle gamma is preferably greater than 30 degrees.

In this embodiment, the tape pre-tightening mechanism is composed of the guide adjusting mechanism 23 and the tape clamping mechanism 24, and both are disposed on the same side of the arm 213 of the tape guide arm 21. specifically, the first tape guide roller 233 of the guide adjusting mechanism 23 is disposed on the rotating end of the guide arm 231, the middle portion of the guide arm 231 is provided with an arc-shaped sliding groove 234, a sliding pin 235 disposed on the tape guide arm 21 slides along the sliding groove 234 and drives the guide arm 231 to rotate circumferentially along the guide arm fulcrum 232 on the frame 1. the tape drawn from the tape roll is guided and adjusted by the second tape guide roller 236 to the non-adhesive side of the tape, so that the adhesive side of the tape and the first tape guide roller 233 are adhered to each other to form a first adhesive position a, and, when the tape guide arm 21 rotates along the tape guide arm fulcrum 212, the tape guide arm 21 drives the guide arm 231 to rotate along the guide arm 232, the included angle β between the front end and the rear end of the first adhesive position a is changed slightly, and, when the tape passes through the guide roller 135-236, the tape guide roller 150-236, the tape guide roller is preferably, the tape is adjusted to pass through the second tape guide roller 236, the first adhesive position b 2, the adhesive roller 236, the adhesive surface is adjusted to be able to pass through the second adhesive roller 150, and to be adjusted to pass through the second adhesive position b, and to be adjusted to be a further controlled to be a.

Of course, the position of the tape roller shaft 5 on the side wall plate 12 of the frame 1 is reasonably set, so that the tape can be directly conveyed from the tape roller shaft 5 through the first tape guide roller 233, and the change range of the included angle is formed; or the adhesive surface or the non-adhesive surface of the adhesive tape is guided and transmitted by the adhesive tape guide rollers, and the size of an included angle between the adhesive surface of the adhesive tape and the adhesive tape guide rollers, which forms an adhesive position, is reasonably controlled, so that the adhesive tape is in a tight state without contacting with foreign objects and affecting the transmission of the adhesive tape between the adhesive position formed between the adhesive tape and the two adjacent adhesive tape guide rollers, and the technical effect similar to that of the guide adjusting mechanism 23 can be obtained.

The adhesive tape pressing mechanism 24 is arranged on the tension arm 211 of the adhesive tape guide arm 21, the adhesive tape pressing mechanism 24 comprises a traction base 244 arranged on the labor-saving arm 213 of the adhesive tape guide arm 21 and a traction spring 245 arranged on the traction base 244, the traction spring 245 pulls a groove 2411 on a pressing tongue 241 to pull the pressing tongue 241, so that the pressing tongue 241 rotates along the circumference of a pressing tongue swinging shaft 242 on the labor-saving arm 213 of the adhesive tape guide arm 21 under the action of the traction spring 245, the tail end 2412 of the pressing tongue presses a baffle 243 on the labor-saving arm 213 of the adhesive tape guide arm 21 and clamps the adhesive tape, and the baffle 243 is fixed with an upper fixed shaft 2432 arranged on an auxiliary arm 8 and the labor-saving arm 213 through a lower fixed shaft 2433 to form a stable state, so that the adhesive tape is clamped between the tail end 2412 of the pressing tongue and the; the adhesive surface of the tape forms a second adhesive site B with the spatula end 2412 of the spatula 241, and the tape between the first adhesive site A and the second adhesive site B forms a tight state as shown in FIGS. 4-5; the tape is then pulled outward, and the non-adhesive side of the tape is engaged by the tape guide 222.

As shown in fig. 1-2 and 4-5, the waste arm 211 of the tape guide arm 21 is normally pulled by the tension of the spring 32 to press the stopper pin 71 and the front tape guide roller 222 to be exposed out of the upper opening 110; when the object to be adhered with the bent angle and the curved surface bending part, such as the sealing box 6 shown in fig. 5, slides along the upper horizontal plane of the frame 1, the box cover 61 slides along the upper horizontal plane of the frame 1, the box bottom 62 is adhered to the adhesive surface of the adhesive tape hung on the adhesive tape guide wheel 222, the adhesive tape guide wheel 222 presses the adhesive tape and enables the adhesive tape guide wheel 222 to continue rolling along the box cover 61, when the adhesive tape guide arm 21 presses down along the circumference of the adhesive tape guide arm fulcrum shaft 212, the tension of the spring 32 from the end of the force consuming arm 211 needs to be overcome, so that the adhesive tape guide wheel 222 forms sufficient extrusion force on the adhesive tape to tightly adhere the box cover 61; the force saving arm 213 and the protruding arm 214 drive the tape guide wheel 222, the tape guide arm fulcrum shaft 212 is used as a fulcrum shaft to move circumferentially to the position where the tape guide wheel 222 sinks below the upper sliding surface from the upper opening 110, the box body continuously pulls the tape, the tape roll on the tape roller shaft 5 is pulled and unreeled at the moment, the tape sections from the first bonding position A to the second bonding position B and the tape sections from the tape guide wheel 222 to the first bonding position A, which are adhered by the box body, keep tight and slide, the tape guide wheel 222 continuously rolls along the edges of the box cover 61 and the box bottom 62, and smoothly keeps pressing the box bottom 62 after right-angle transition, and the tape section 63 can smoothly cover and adhere the box cover 61 and the box bottom 62 of the sealing box 6 without generating a relief phenomenon; when the front tape guide wheel 222 moves downwards continuously until the front tape guide wheel 222 moves to the front lower end of the cutting knife 42, and when the rear tape guide wheel 222 'moves from the front upper side to the rear upper side of the cutting knife 42, the rear tape guide wheel 222' smoothes the adhesive tapes close to part of the first surface and all the second surfaces until the cutting knife 42 cuts the adhesive tapes; the arm 213 and the auxiliary arm 8 press the cutter seat 41 to limit the maximum back swing range of the tape guide arm 21.

Compared with the prior art, the baffle 243 is set to be in a stable state, so when the tape is in the second bonding position B, the tape can slide relative to the second bonding position B to a certain extent, that is, when the tape guide arm 21 is reset from fig. 5 to fig. 4, the distance between the tape section from the first bonding position a to the second bonding position B is gradually enlarged, and since the first bonding position a has a larger bonding area and the bonding area of the second bonding position B is smaller, when the tape guide arm is reset to the state of fig. 4, the tape section from the second bonding position B to the tail end of the tape is pulled and retracted, and slides relative to the second bonding position B, so the tail end of the tape can be pulled back to be hung on the front tape guide wheel 222, and the sealing box 6 can be bonded again.

Preferably, when the tape swing arm 21 is reset from the maximum rear swing range to the maximum front swing range, the distance k between the second bonding position B on the rearmost side and the first bonding position a on the foremost side is increased to k', and the error between the increased distance and the distance l between the cutter and the rear tape guide wheel at the maximum rear swing range is ± 1 cm.

Preferably, when the maximum rear swing amplitude is set, the distance d between the upper tangent plane of the rear tape guide wheel 222 ' and the upper horizontal plane is 2-5mm, the sealing box 6 continues to be pushed forward after the above operation is completed, and due to the height difference between the rear tape guide wheel 222 ' and the upper horizontal plane, the rear end of the sealing box 6 is tilted upwards and rolls away along the rear tape guide wheel 222 ', so that an operator is reminded that the sealing box 6 is bonded by the tape.

After the sealing box 6 is attached, when the sealing box 6 is removed, the arm 211 is pulled by the spring 32 to rotate the tape guide arm 21 along the tape guide arm fulcrum shaft 212, and the arm 211 is reset to press the limit pin 71 again, so that the next repeated operation can be performed.

As an improvement of the adhesive tape clamping mechanism 24, the tail end 2412 of the pressing tongue is provided with a concave V-shaped opening, the joint surface of the baffle 243 and the tail end 2412 of the pressing tongue is provided with a V-shaped convex surface 2431 matched with the V-shaped opening, the tightness of the adhesive tape section between the first bonding position A and the second bonding position B can be further improved by adopting the arrangement of the V-shaped opening instead of a flat opening, the adhesive tape is sufficiently pressed and clamped between the V-shaped opening and the V-shaped convex surface 2431, so that the adhesive tape is pressed and clamped at the second bonding position B to form a V-shaped state, and the phenomenon that the adhesive tape section between the first bonding position A and the second bonding position B is softened when the adhesive tape is finally unreeled and the sealing machine is stopped for a long time can be further prevented.

The sealing machine is simple and convenient to use, an operator only needs to place the sealing box 6 on the upper horizontal plane of the upper cover 11, the sealing box is aligned with the adhesive tape and horizontally pushed to complete bonding, the operation process is free of learning cost, and the sealing machine is suitable for large-scale popularization and application.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (10)

1. A tape sealing machine suitable for bonding a bent part comprises a tape unwinding mechanism, a tape transmission mechanism and a cutter, wherein the tape unwinding mechanism, the tape transmission mechanism and the cutter are arranged on a rack; the adhesive tape is bonded with the adhesive tape pre-tightening mechanism through at least two bonding positions, so that the adhesive tape between the bonding positions is in a tight state without contacting with foreign objects, and the adhesive tape pre-tightening mechanism is characterized in that a front adhesive tape guide wheel and a rear adhesive tape guide wheel which can rotate along a rotating shaft of the front guide wheel and the rear guide wheel are arranged at the tail end of a labor saving arm of an adhesive tape guide arm, a cutter is arranged at the rear side of an upper opening of an upper horizontal plane, and the blade surface of the cutter is; the adhesive tape guide arm can overcome the tension of a traction mechanism at the end of a labor-consuming arm, and takes an adhesive tape guide arm fulcrum shaft on a side wall plate of the rack as a rotating fulcrum shaft to drive the front and rear adhesive tape guide wheels to move circumferentially and sink towards an upper opening, so that the front and rear adhesive tape guide wheels sink to the front lower side and the rear side of the cutter respectively.

2. A tape sealing machine suitable for bonding of bent portions according to claim 1, wherein said guide arm limiting mechanism comprises a front guide arm limiting mechanism and a rear guide arm limiting mechanism, said front guide arm limiting mechanism and said rear guide arm limiting mechanism limiting the maximum front swing amplitude and the maximum rear swing amplitude of the tape guide arm against the pulling force of the traction mechanism; when the maximum back swing amplitude is reset to the maximum front swing amplitude, the distance between the bonding position on the last side and the bonding position on the foremost side is increased, and the distance error between the cutter and the rear adhesive tape guide wheel is +/-1 cm when the maximum back swing amplitude is reached.

3. A tape sealing machine adapted to bond a folded portion according to claim 2, wherein a common tangent plane of front sides of said front and rear tape guide roller surfaces is at an angle of 30 ° to 90 ° with respect to a front side of an upper horizontal surface at a maximum front swing amplitude.

4. A tape sealing machine suitable for bonding of bent portions according to claim 2, wherein said front arm position-limiting mechanism is a position-limiting pin provided on the frame, and a shock-absorbing surface is provided on the surface of said position-limiting pin.

5. A tape sealing machine suitable for bonding of bent portions according to claim 2, wherein said cutter is provided on the cutter holder, and when the front and rear tape guide rollers are depressed to the front lower side and the rear upper side of the cutter, respectively, the tape guide arm is blocked by the cutter holder to form a rear end guide arm stopper mechanism.

6. A tape sealing machine suitable for bonding of bending portions according to claim 1, further comprising an auxiliary sub-arm, wherein the auxiliary sub-arm fixes the rotating shafts of the front and rear guide wheels.

7. A tape sealing machine suitable for bending part bonding according to any one of claims 1 to 6, wherein the tape conveying mechanism further comprises a guide adjusting mechanism, a first tape guide roller of the guide adjusting mechanism is arranged at the rotating end of the guide arm, and the bonding surface of the tape and the first tape guide roller are bonded with each other to form a first bonding position; a second adhesive tape guide roller of the guide adjusting mechanism is adjustably arranged on the rack through a tension adjusting chute and is mutually pressed with the non-adhesive surface of the adhesive tape; the guide arm is provided with an arc-shaped sliding groove, and a sliding pin arranged on the adhesive tape guide arm slides along the sliding groove and drives the guide arm to rotate circumferentially along a guide arm fulcrum shaft on the rack.

8. A tape sealing machine suitable for the bonding of bent parts according to any one of claims 1 to 6, characterized in that the tape pre-tightening mechanism further comprises a tape clamping mechanism arranged on the tape guide arm waste arm, the tape clamping mechanism pulls the pressing tongue through a traction member, so that the tail end of the pressing tongue presses the baffle and clamps the tape, and the adhesive surface of the tape and the tail end of the pressing tongue form a second bonding position.

9. A tape sealing machine suitable for the bonding of bent parts according to claim 8, characterized in that the end of said tongue depressor is a concave V-shaped opening, and the joint surface of said baffle and the end of said tongue depressor is a V-shaped convex surface matching with the V-shaped opening.

10. A tape sealer for bonding of folded portions as claimed in any one of claims 1 to 6, wherein said frame has a fixed pin provided on a side wall plate thereof, and a drag pin provided on a waste arm of the tape guide arm, and said drag mechanism is constituted by a spring, the fixed pin and the drag pin.

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