Pressing, pasting and cutting mechanism, adhesive tape connecting, pressing and cutting assembly and adhesive tape winding machine

Abstract

The invention relates to the technical field of glue winding machines, and particularly discloses a pressing, pasting and cutting mechanism which comprises a rotating turntable, and a glue pasting roller is mounted on a connecting arm on the turntable; a sliding block sliding vertically is arranged on the rack, and the sliding block moves to drive the cutting knife to be switched between the cutting position and the non-cutting position. A first lifting part is arranged on the turntable and comprises a first lifting surface, the distance between the first lifting surface and the center of the turntable is gradually changed, and the first lifting surface drives the sliding block to move; and the position of the lifting tail end of the first lifting surface on the circumference of the turntable reaches the corresponding position when the tail end of the adhesive tape is pressed and pasted before the adhesive pasting roller. And the adhesive tape receiving, pressing and cutting assembly comprises an adhesive receiving assembly and a pressing and cutting mechanism. The adhesive tape winding machine comprises a winding mechanism and an adhesive tape connecting, pressing and cutting assembly. According to the scheme, the problem that the cost is high due to the fact that two existing rubberizing assemblies exist is solved, and the full-automatic process of rubberizing, head end pressing and pasting, avoiding, rubberizing, cutting and tail end pressing and pasting under driving of one driving source is achieved.

Description

Technical Field

[0001] This invention relates to the field of tape wrapping machine technology, specifically to a pressing and cutting mechanism, a tape splicing and pressing assembly, and a tape wrapping machine. Background Technology

[0002] In the field of packaging technology, it is extremely important to wrap objects with tape. Non-full loop wrapping of tape can seal the wrapped object (such as cardboard boxes, turnover boxes, and packaged objects with a certain shape), while full loop wrapping can increase the sealing strength or enhance the overall strength of the packaged object.

[0003] Currently, most automatic tape wrapping machines on the market are equipped with automatic tape splicing function and automatic pressing function for the tape head and tail. Specifically, when wrapping begins, the tape end is pasted on the splicing structure, and the tape is smoothly pulled out by the circumferential movement of the tape roll. The pulled-out tape is pasted on the wrapped object as the tape roll moves. The tape end pasted on the splicing structure needs to be pulled hard by the pressing structure before it is pasted on the wrapped object.

[0004] Taking existing technologies as an example, patent publication number CN218506200U, "Tape Winding Device," uses a tape limiting plate to receive the adhesive. Another example is patent publication number CN217295123U, "A Smoothing Mechanism for a Wrapping Packaging Machine," which uses a receiving rod fixed to a swing arm to receive the adhesive, a rotating cutter to cut the tape, and a rotating leveling pad to pat the tape onto the object being wrapped (such as a cardboard box). However, these technologies require independent drives for cutting, patting, and receiving, resulting in high costs. Furthermore, the patting method can easily damage the object being wrapped. In addition, the patting area is limited, making it difficult to ensure that all tape ends that need to be pressed are completely pressed. If the tape ends are not completely pressed...

[0005] To address the issues of high drive costs and the inability to guarantee complete adhesion of the tape end, patent publication number CN118811209A, "An Automatic Tape Sealing and Packaging Machine," employs a linkage control method. This method links the action of the tape-cutting blade with the brush that presses the tape. When cutting is needed, a cam is controlled to rotate, causing the cam to drive the blade to swing and cut the tape. The cam's rotation, through a series of transmission mechanisms, moves a slide plate with two brush bristles, ensuring the bristles adhere the tape to the bottom of the object being wrapped. The long stroke of the brush ensures complete adhesion of the tape to the object. However, this technology suffers from overly complex transmission, reduced system efficiency, and increased energy loss. Furthermore, multi-stage transmission can lead to accumulated accuracy errors, vibration, and noise, reducing dynamic response speed. In addition, manufacturing costs and maintenance difficulties are significantly increased.

[0006] To address this, the inventors designed a device for splicing adhesive tape, a winding machine, and a method of use, as described in patent publication number CN120003775A. This technology achieves tight, straight, and wrinkle-free bonding of the tape's head and tail ends through a head-applying assembly and a tail-applying assembly. Furthermore, the tail-applying assembly, upon activation, triggers a cutting blade to cut the tape. Compared to previous technologies, this reduces the number of driving sources, lowering driving costs, while ensuring straight and complete bonding. The structure is quite simple, and maintenance costs are low. However, the existence of two applicating assemblies in the driving source still has room for optimization and simplification to further reduce costs. Summary of the Invention

[0007] The present invention aims to provide a pressing and cutting mechanism, a tape pressing and cutting assembly, and a tape wrapping machine to solve the problem of high cost caused by the existence of two tape application components in the current process.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A pressing and cutting mechanism includes a frame, a turntable rotatably connected to the frame, a connecting arm fixed on the turntable, and an adhesive roller mounted on the connecting arm. The rotation center of the adhesive roller is eccentrically set with respect to the rotation center of the turntable. A slider is vertically slidably connected to the frame. The slider is connected to a cutting blade. The movement of the slider is used to switch the cutting blade between the cutting position and the non-cutting position. The turntable is provided with a first lifting part, which includes a first lifting surface that is inclined / arc / curved. The distance between the wall of the first lifting surface and the center of the turntable gradually changes. The wall of the first lifting surface can drive the slider to move by pushing the sliding block with a pushing member. The position of the lifting end of the first lifting surface on the circumference of the turntable is such that it reaches the position corresponding to the end of the tape before the adhesive roller arrives at the end of the tape for pressing.

[0009] The principle and advantages of this solution are as follows: This solution uses a turntable to drive its eccentrically positioned adhesive roller to complete the tape application. Simultaneously, the turntable's rotational motion is converted into slider movement by a specific contoured first lifting section that works in conjunction with a pushing component on a slider, thereby controlling the cutting blade's action. The specific working process is as follows: The turntable first rotates counterclockwise, driving the adhesive roller to press the tape head onto the surface of the object being wrapped (such as a box) and then rotates back for a second application. When it's time to apply the tape tail, the turntable rotates clockwise to prepare for tail-end application. At this time, the pushing component enters the first lifting surface of the first lifting section and is pushed by the first lifting surface under the turntable's influence, forcing the cutting blade to gradually approach the cutting position to cut the tape. The adhesive roller then continues to move, flattening the tape tail. After the tape tail is flattened once, the turntable rotates counterclockwise to return to the initial stage of preparing for the next round of tape head application. This return achieves a second application of the tape tail.

[0010] This solution implements a single adhesive roller that rotates clockwise or counterclockwise with the turntable, thus completing the pressing of the tape's beginning and end. Furthermore, the design of the first lifting unit ensures that the cutting blade only interacts with the tape during pressing at the end, creating a simple mechanical linkage. This integrates multiple actions into a single power source, simplifying transmission and control, and guaranteeing the reliability of cutting before pressing. It also ensures that the same adhesive roller can be reused by rotating the turntable in both directions, achieving both-end pasting and secondary pressing, significantly reducing equipment costs, simplifying control, and improving reliability. Preferably, as an improvement, the first lifting part further includes a first retaining surface that is smoothly connected, the curvature center of the first retaining surface being coaxial with the rotation center of the turntable; an exit port for the pusher to disengage from the first lifting part is formed between the end of the first retaining surface and the initial section of the first lifting surface.

[0011] Preferably, as an improvement, the slider or cutting blade is connected to the frame via a first elastic element, which applies a force to the cutting blade away from the cutting position.

[0012] Preferably, as an improvement, the first lifting part is integrally formed on the turntable.

[0013] Preferably, as an improvement, the cutting blade includes a rocker arm rotatably connected to the frame and a blade fixed to the rocker arm; the slider and the rocker arm are rotatably connected by a connecting rod, and the connection point between the connecting rod and the rocker arm is offset from the rotation center of the rocker arm on the frame.

[0014] Beneficial effects: This invention uses a transmission mechanism consisting of a slider, connecting rod, and swing arm to convert the linear motion of the slider into the oscillating stroke of the blade. This structure allows the blade to gradually cut the tape at an inclined angle, which is more labor-saving than vertical cutting. At the same time, the oscillating design allows the blade to be hidden under the adhesive contact point when not in use, improving equipment safety.

[0015] The present invention also provides a tape splicing and cutting assembly, including a splicing component, which includes a splicing roller for splicing tape, and the pressing and cutting mechanism.

[0016] Beneficial effects: This solution integrates the pressing and cutting mechanism with the adhesive splicing assembly, forming a complete automated tape handling assembly. It achieves full automation from splicing and pressing to cutting, simplifying the overall machine structure. If the adhesive splicing roller is in a fixed position, it can be used to wrap a single loop of tape. The following example demonstrates wrapping a single loop of tape around an object such as a cardboard box: Before wrapping begins, the carton is placed on the cargo platform. Adhesive tape is attached to the bottom of the tape receiving roller near the film roll. The tape is applied at the beginning. During the initial application, the tape receiving roller rotates to the pressing position under the drive of the turntable, applying the tape once and then again during the return stroke. When the tape reaches the point where the end needs to be pressed, the tape receiving roller rotates under the turntable. The cutting blade, driven by the turntable, reaches the working position before the tape receiving roller to cut the tape. The tape receiving roller continues to rotate with the turntable, pulling off the tape attached to the side away from the film roll and pressing it onto the carton, thus achieving a single loop of wrapping.

[0017] If the adhesive-feeding roller can switch between the working position (i.e., the adhesive-feeding position) and the non-working position (i.e., the non-adhesive-feeding position), then when the adhesive-feeding roller is switched to the non-working position and both the adhesive-applying roller and the cutting blade are in the non-working position, the entire tape-feeding and cutting assembly can avoid the tape wrapping process, making it convenient to wrap the tape with the set number of turns.

[0018] Preferably, as an improvement, the adhesive application assembly further includes a drive unit for switching the adhesive application roller between the adhesive application position and the non-adhesive application position.

[0019] Beneficial effects: This solution enables the glue-splitting roller to switch positions, allowing it to avoid obstacles in time after glue splicing the tape head, thus providing unobstructed space for at least two subsequent wraps of tape and avoiding interference. This ensures that the solution can automatically complete the entire process of tape head pressing, glue-splitting roller avoidance, tape wrapping, tape cutting, and tail pressing.

[0020] Preferably, as an improvement, the driving unit includes a vertically movable push block, the movement of which drives the adhesive-applying roller to switch between an adhesive-applying position and a non-adhesive-applying position; the turntable is provided with a second lifting unit, which includes a second lifting surface that is an inclined surface / arc surface / curved surface, the distance between the wall of the second lifting surface and the center of the turntable gradually changes, and the second lifting surface can drive the push block to move by pushing against the pusher on the push block; the ends of the second lifting surface and the first lifting surface are located on the same side relative to the line connecting the rotation center of the adhesive-applying roller and the rotation center of the turntable.

[0021] Beneficial effects: This solution uses the rotation of the turntable to drive the adhesive roller to rotate relative to the center of the turntable to complete the pressing action. It also drives the cutting blade to cut the tape through the connection between the first lifting part and the slider. Furthermore, the second lifting part on the turntable can drive the adhesive receiving roller to switch between the adhesive receiving position and the non-adhesive receiving position. This solution can accurately achieve simple linkage control of pressing, avoiding, cutting and adhesive receiving in one integrated manner, and all share a single drive source (the turntable is the only drive source), which greatly simplifies the transmission chain and reduces drive costs.

[0022] In addition, this solution mechanically stipulates that when the end of the tape needs to be pasted, the action sequence of "adhesive roller in place → cutting blade action → adhesive roller pressing" must be strictly followed to avoid timing errors and ensure the reliability of the work.

[0023] Preferably, as an improvement, the drive unit further includes a cylindrical cam rotatably connected to the frame, the cylindrical cam having a helical groove on its outer periphery, a glue-receiving roller mounted on the cylindrical cam, and a pusher on the pusher block capable of inserting into the helical groove and driving the cylindrical cam to rotate, so as to further optimize space.

[0024] Preferably, as an improvement, a lifting block is rotatably connected to the turntable, the side of the lifting block forms the second lifting surface, and a second elastic element is connected between the turntable and the lifting block. The second elastic element is used to make the lifting block have a tendency to swing radially inward toward the turntable.

[0025] Beneficial effects: The design of the lifting block and the second elastic element in this solution allows the turntable to switch positions by normally driving the glue-receiving roller of the glue-receiving assembly through the lifting block when rotating in one direction, and can pass over the lifting block without interference when rotating in the opposite direction, thus ensuring the smooth operation of a specific work cycle.

[0026] Preferably, as an improvement, the second lifting part further includes a second holding surface, which is connected to the lifting end of the first lifting surface. The second holding surface is coaxial with the turntable, and the end of the second holding surface away from the second lifting surface is located on both sides of the center of the turntable with the adhesive roller.

[0027] Preferably, as an improvement, the radius of curvature of the second retaining surface is greater than the radius of curvature of the first retaining surface.

[0028] The present invention also provides a tape winding machine, including a winding mechanism for winding tape, and the tape clamping and cutting assembly.

[0029] Beneficial effects: This solution applies the tape splicing and cutting assembly to the wrapping machine, enabling the machine to automatically and reliably press and cut the tape at both ends, thus improving the automation level of the equipment and the packaging quality. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the tape splicing and cutting assembly according to Embodiment 1 of the present invention.

[0031] Figure 2 for Figure 1 A three-dimensional structural diagram showing the disassembly of the first and third elastic components and a slight change in the angle of the cutting blade.

[0032] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure after rotating 90°.

[0033] Figure 4 for Figure 2 A schematic diagram of the three-dimensional structure after rotating 90°.

[0034] Figure 5 for Figure 4 The left view.

[0035] Figure 6 for Figure 1 The image only shows the front view of the turntable and the adhesive roller.

[0036] Figure 7 for Figure 6 Rear view.

[0037] Figure 8 This is a three-dimensional structural diagram of the tape end during the first pressing of Embodiment 1 of the present invention.

[0038] Figure 9 This is a three-dimensional structural diagram of Embodiment 1 of the present invention when the adhesive receiving roller is in a non-adhesive receiving position, the cutting blade is in a non-cutting position, and the adhesive application roller is in a non-pressing position.

[0039] Figure 10 This is a schematic diagram illustrating the action of pressing the tape head end together in one step, as shown in Embodiment 1 of the present invention.

[0040] Figure 11 This is a front view schematic diagram (S1-S2) of the tape splicing and cutting assembly state change process in Embodiment 1 of the present invention, from the initial pressing of the tape end to the completion of the second pressing and the process of avoiding tape entanglement.

[0041] Figure 12 This is a schematic diagram illustrating the action of pressing the end of the tape onto the tape in one step, as shown in Embodiment 1 of the present invention.

[0042] Figure 13 This is a front view schematic diagram (S2-S3) of the tape splicing and cutting assembly state change process from avoiding tape wrapping to pressing the tape tail end until completion in Embodiment 1 of the present invention.

[0043] The reference numerals in the accompanying drawings include: frame 1, turntable 2, first lifting part 21, first lifting surface 211, first holding surface 212, second lifting part 22, second lifting surface 221, second holding surface 222, second elastic element 2211, connecting arm 3, adhesive roller 4, slider 5, pusher 51, cutting blade 6, swing arm 61, blade 62, connecting rod 63, first elastic element 7, adhesive receiving assembly 8, adhesive receiving roller 81, drive part 82, cylindrical cam 821, spiral groove 8211, push block 822, pusher body 8221, third elastic element 9, winding mechanism 10, and object to be wound 100. Detailed Implementation

[0044] The following detailed description illustrates the specific implementation method: Example 1 Combination Figures 1 to 11 A tape splicing and cutting assembly is used in a winding machine for circumferentially winding tape around a stationary object. The assembly can automatically complete the receiving of the tape head, the pressing of the tape head and tail, and the cutting of the tape. Specifically, the tape splicing and cutting assembly includes a pressing and cutting mechanism and a splicing component 8.

[0045] I. Pressing and Cutting Mechanism The pressing and cutting mechanism is a component that realizes the pressing and cutting of adhesive tape. The pressing and cutting mechanism includes a frame 1, a turntable 2, a connecting arm 3, an adhesive roller 4, a slider 5, a cutting blade 6, a first elastic element 7, a first lifting part 21, and a pushing part 51.

[0046] The turntable 2 is rotatably mounted on the frame 1 via a rotating shaft. A connecting arm 3 is integrally formed on the turntable 2 and extends outward from the turntable 2. An adhesive roller 4 is eccentrically rotatably connected to the free end of the connecting arm 3, and an adhesive elastic element is provided between the connecting arm 3 and the adhesive roller 4. In this embodiment, the adhesive elastic element is a torsion spring. The structure of the adhesive roller 4 and the adhesive elastic element in this embodiment is the same as that of the adhesive roller 4 in the "A Tape Splicing Device" with patent publication number CN120003775A, so that the adhesive roller 4 can have pressure elasticity.

[0047] The slider 5 is vertically slidably connected to the frame 1, and the cutting blade 6 is drivenly connected to the slider 5.

[0048] In a preferred embodiment, the cutting blade 6 specifically includes a rocker arm 61 and a blade 62. The rocker arm 61 is rotatably connected to the frame 1, the blade 62 is fixedly mounted on the rocker arm 61, the slider 5 is rotatably connected to the rocker arm 61 via a connecting rod 63, and the connection point between the connecting rod 63 and the rocker arm 61 is offset from the rotation center of the rocker arm 61 on the frame 1. A first elastic element 7 is connected between the slider 5 or the cutting blade 6 and the frame 1, providing the cutting blade 6 with an elastic restoring force that always tends to move away from the cutting position.

[0049] The first lifting part 21 is integrally formed on the end face of the turntable 2. The first lifting part 21 is a lifting groove formed on the end face of the turntable 2. This lifting groove includes a first arcuate groove segment and a second arcuate groove segment that are smoothly connected. The groove wall of the first arcuate groove segment forms an arcuate first holding surface 212. The second arcuate groove segment is tangent to the first arcuate groove segment, and the groove wall of the second arcuate groove segment forms an arcuate first lifting surface 211. In this embodiment, the first lifting surface 211 is an arcuate surface (also simply called an arc surface), but it can also be a curved surface or an inclined surface. The center of curvature of the first holding surface 212 is coaxial with the rotation center of the turntable 2. The first lifting surface 211 gradually extends outward from its connection point with the first holding surface 212, so that the distance between the wall of the first lifting surface 211 and the center of the turntable 2 gradually changes.

[0050] The starting end of the first lifting surface 211 is positioned on the circumference of the turntable 2, corresponding to the position of the adhesive roller 4 on the circumference of the turntable 2. The lifting end of the first lifting surface 211 is positioned on the circumference of the turntable 2 before the adhesive roller 4 reaches the position corresponding to the end of the tape when it is pressed, so that the cutting blade reaches the working position before the adhesive roller. An exit port for the pusher to disengage from the first lifting part is formed between the end of the first holding surface and the initial section of the first lifting surface, so that the lifting groove of the turntable 2 is an open lifting groove.

[0051] The pusher 51 is fixedly installed on the slider 5. The pusher 51 is a bolt-type roller, and the roller of the pusher 51 can abut against the lifting groove. When the turntable 2 rotates, the roller of the pusher 51 slides along the groove wall of the first lifting part 21, thereby being lifted or lowered, driving the slider 5 to rise or fall synchronously.

[0052] II. Adhesive bonding assembly 8 The adhesive application assembly 8 works in conjunction with the pressing and cutting mechanism. The adhesive application assembly 8 mainly includes two adhesive application rollers 81 and a drive unit 82 that drives the two adhesive application rollers 81 to switch between adhesive application position and non-adhesive application position.

[0053] In a preferred embodiment, the drive unit 82 includes a cylindrical cam 821 rotatably connected to the frame 1 and a push block 822 slidably connected to the frame 1. The rotation axis of the cylindrical cam 821 is vertically arranged, and two adhesive-receiving rollers 81 are horizontally arranged and mounted on the cylindrical cam 821 through a connecting plate. Each adhesive-receiving roller 81 can rotate under external force. The rotation of the cylindrical cam 821 drives the two adhesive-receiving rollers 81 to rotate around the Z-axis. In this embodiment, the rotation of the cylindrical cam 821 can drive the adhesive-receiving rollers 81 to rotate 90°. A pusher is fixed on the push block 822, and the pusher is inserted into the spiral groove 8211 of the cylindrical cam 821. In this embodiment, to reduce friction, the pusher is set as a rolling pin. A pusher body 8221 is also fixedly installed on the push block 822. In this embodiment, the pusher body 8221 is a bolt-type roller. In this embodiment, the push block 822 and the slider 5 are vertically slidably connected on the same slide rail, which is fixed to the frame 1.

[0054] The turntable 2 is provided with a second lifting part 22, which includes a smoothly connected, arc-shaped second lifting surface 221 and a second holding surface 222. The distance between the second lifting surface 221 and the center of the turntable 2 is smaller as it is further away from the second holding surface 222. The second holding surface 222 is coaxial with the turntable 2. After the turntable 2 rotates, the second lifting part 22 pushes the pusher 8221, thereby causing the cylindrical cam 821 to rotate, realizing the position switching of the glue-receiving roller 81. A third elastic element 9 is connected between the pusher 822 and the frame 1, and the third elastic element 9 provides a downward pulling force to the pusher 822. In this embodiment, the second lifting surface 221 is an arc-shaped surface (which can also be simply referred to as an arc surface), but it can also be a curved surface or an inclined surface.

[0055] The second lifting part 22 is a lifting block 221 rotatably connected to the turntable 2, and the side of the lifting block 221 forms the second lifting surface 221. A second elastic member 2211 is connected between the turntable 2 and the lifting block 221. The second elastic member 2211 is used to make the lifting block 221 tend to swing radially inward towards the turntable 2. The turntable 2 is provided with a limiting groove, and the second elastic member 2211 forces the lifting block 221 to press against the groove wall of the limiting groove when there is no external force.

[0056] To ensure that each action is performed in a precise sequence, the position of the end of the second holding surface 222 away from the second lifting surface 221 on the circumference is controlled to correspond to the position of the adhesive roller 4 on the circumference of the turntable 2, located on opposite sides of the center of the turntable 2. The ends of the second lifting surface 221 and the first lifting surface 211 are located on the same side relative to the line connecting the rotation center of the adhesive roller 4 and the rotation center of the turntable 2. Furthermore, the radius of curvature of the second holding surface 222 can be greater than the radius of curvature of the first holding surface 212.

[0057] In this embodiment, the first elastic element 7, the second elastic element 2211, and the third elastic element 9 can all be springs.

[0058] This embodiment uses a cardboard box as an example of the object to be wrapped, but of course, the cardboard box can be replaced with other objects to be wrapped.

[0059] The method of using the tape splicing and cutting assembly in this embodiment includes the following steps: S1: Initial preparation and tape tip application Place the carton on the stretch wrapping machine's cargo platform. At this time, the adhesive receiving roller 81 is in the adhesive receiving position, the push block 822 is in its lowest position, and the free end of the tape is attached to the adhesive receiving roller 81. The cutting blade 6 is in the non-cutting position, and the adhesive applicator roller 4 is in its initial low position.

[0060] The turntable 2 is controlled to rotate in a first direction (e.g., counterclockwise). During this rotation, the lifting block 221 on the turntable 2 can be pushed away by the abutment 8221 on the adhesive application assembly 8, so the adhesive application roller 81 remains stationary. However, the eccentrically positioned adhesive application roller 4 rotates with the turntable 2 and gradually rises. After passing the highest point, it presses the tape end on the adhesive application roller 81 onto the surface of the carton and pulls it off the adhesive application roller 81, completing one pressing of the end.

[0061] To ensure that the same adhesive roller 4 can be used for tape application at the end, the turntable 2 immediately rotates in the opposite direction (i.e., clockwise) by a certain angle. During this rotation, the adhesive roller 4 passes over the tape end again, achieving secondary pressing and enhancing the adhesion.

[0062] S2: Adhesive receiving roller 81 avoids tape wrapping. Turntable 2 continues to rotate in the second direction (i.e., clockwise). When the second lifting part 22 (specifically the second lifting surface 221 of the lifting block 221) on it begins to contact the pusher 8221, it pushes the pusher block 822 upward. The pusher block 822 drives the cylindrical cam 821 to rotate, thereby switching the glue-applying roller 81 mounted on it from the glue-applying position to the non-glue-applying position, leaving unobstructed space for the rotation and winding of the carton.

[0063] Subsequently, the wrapping mechanism on the wrapping machine wraps the carton.

[0064] S3: Cutting and pasting the tape end After the set number of wraps is reached, the turntable 2 continues to rotate clockwise. When the pusher 8221 disengages from the second holding surface 222 of the second lifting part 22, the pusher 822 descends under its own weight and / or the action of the third elastic member 9, driving the adhesive receiving roller 81 back to the adhesive receiving position via the cylindrical cam 821. At the same time, the adhesive applying roller 4 also moves to the lower position with the turntable 2.

[0065] Turntable 2 continues to rotate in the second direction (i.e., clockwise), and the adhesive roller 4 begins to move from a low position to a high position. During this process, the pusher 51 fixed on the slider 5 begins to contact the first lifting surface 211 on the turntable 2, pushing the slider 5 upward. The slider 5 drives the cutting blade 6 to swing to the cutting position through the linkage 63 mechanism, cutting the tape before the adhesive roller 4 reaches the pressing point.

[0066] After cutting, the pusher 51 enters the first retaining surface 212, keeping the cutter 6 in a high position. The adhesive roller 4 then reaches its highest point and presses the end of the tape onto the carton, completing one pressing of the end.

[0067] S4: Secondary pressing and mechanism reset After the tape end is pressed once, turntable 2 rotates again in the first direction (i.e., counterclockwise). The tape application roller 4 applies a second pressing to the tape end during its return stroke.

[0068] At the same time, the pusher 51 disengages from the first lifting part 21, and the slider 5, under the action of the first elastic member 7, drives the cutting blade 6 to descend and reset to the non-cutting position. The entire mechanism returns to its initial state, ready for the next cycle.

[0069] In the above embodiment, a turntable 2 drives an eccentrically positioned adhesive-applying roller 4, along with a first lifting part 21 and a second lifting part 22 with specific contours, a slider 5, a pusher 822, and a cam. Through a purely mechanical linkage, the entire process of applying the tape head end, avoiding the adhesive-applying roller 81, wrapping the tape, cutting the tape, and applying the tail end is completed automatically and precisely. This embodiment highly integrates multiple complex actions into a single power source, greatly simplifying the overall machine transmission structure and control system, reducing costs. Furthermore, the mechanical contours rigidly define the sequence of actions, ensuring the working logic of "applying adhesive first, then cutting, then applying," fundamentally avoiding malfunctions. Operational reliability and automation are significantly improved. Due to its simple structure, only one drive source is needed, resulting in low procurement, control, and maintenance costs.

[0070] Example 2 This second embodiment provides a tape winding machine, including a winding mechanism 10 for winding tape, and also the tape splicing and cutting assembly of the first embodiment. The winding mechanism 10 of this embodiment can be constructed using the winding mechanism with patent publication number CN120003775A, or any other winding mechanism capable of driving the film roll to move circumferentially around the object being wound.

[0071] This embodiment applies the tape splicing and cutting assembly to the wrapping machine, enabling the tape wrapping machine to automatically and reliably press and cut the tape head and tail ends, thereby improving the automation level of the equipment and the packaging quality.

[0072] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pressing and cutting mechanism, comprising a frame, characterized in that: A turntable is rotatably connected to the frame, a connecting arm is fixed on the turntable, and an adhesive roller is installed on the connecting arm. The rotation center of the adhesive roller is eccentrically set with respect to the rotation center of the turntable. A slider is vertically slidably connected to the frame. The slider is connected to a cutting blade. The movement of the slider is used to switch the cutting blade between the cutting position and the non-cutting position. The turntable is provided with a first lifting part, which includes a first lifting surface that is inclined / arc / curved. The distance between the wall of the first lifting surface and the center of the turntable gradually changes. The wall of the first lifting surface can drive the slider to move by pushing the sliding block with a pushing member. The position of the lifting end of the first lifting surface on the circumference of the turntable is such that it reaches the position corresponding to the end of the tape before the adhesive roller arrives at the end of the tape for pressing.

2. The pressing and cutting mechanism according to claim 1, characterized in that: The first lifting part further includes a first retaining surface that is smoothly connected, the curvature center of the first retaining surface being coaxial with the rotation center of the turntable; an exit outlet for the pusher to disengage from the first lifting part is formed between the end of the first retaining surface and the initial section of the first lifting surface.

3. The pressing and cutting mechanism according to claim 1, characterized in that: The slider or cutting blade is connected to the frame via a first elastic element, which applies a force to the cutting blade away from the cutting position.

4. The pressing and cutting mechanism according to claim 1, characterized in that: The cutting blade includes a swing arm rotatably connected to the frame and a blade fixed to the swing arm; the slider and the swing arm are rotatably connected by a connecting rod, and the connection point between the connecting rod and the swing arm is offset from the rotation center of the swing arm on the frame.

5. A tape splicing and cutting assembly, comprising a splicing component, the splicing component including a splicing roller for splicing tape, characterized in that: It also includes a pressing and cutting mechanism as described in any one of claims 1-4.

6. The tape splicing and cutting assembly according to claim 5, characterized in that: The adhesive dispensing assembly also includes a drive unit, which is used to drive the adhesive dispensing roller to switch between the adhesive dispensing position and the non-adhesive dispensing position.

7. The tape splicing and cutting assembly according to claim 6, characterized in that: The drive unit includes a push block that can move vertically. The movement of the push block is used to drive the glue-receiving roller to switch between glue-receiving and non-glue-receiving positions. The turntable is provided with a second lifting unit, which includes a second lifting surface that is inclined / arc / curved. The distance between the wall of the second lifting surface and the center of the turntable gradually changes. The second lifting surface can drive the push block to move by pushing against the pusher on the push block. The ends of the second lifting surface and the first lifting surface are on the same side relative to the line connecting the rotation center of the adhesive roller and the rotation center of the turntable.

8. The tape splicing and cutting assembly according to claim 7, characterized in that: The drive unit also includes a cylindrical cam rotatably connected to the frame. The cylindrical cam has a spiral groove on its outer circumference. A glue-receiving roller is mounted on the cylindrical cam. The pusher on the push block can insert into the spiral groove and drive the cylindrical cam to rotate.

9. The tape splicing and cutting assembly according to claim 7, characterized in that: A lifting block is rotatably connected to the turntable, and the side of the lifting block forms the second lifting surface. A second elastic element is connected between the turntable and the lifting block, and the second elastic element is used to make the lifting block have a tendency to swing radially inward towards the turntable.

10. A tape winding machine, comprising a winding mechanism for winding tape, characterized in that: It also includes the tape splicing and cutting assembly as claimed in any one of claims 6-9.

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