Film tearing mechanism

Abstract

The utility model relates to a film tearing mechanism which comprises a base plate, a positioning groove is formed in the base plate; a film tearing workpiece and a clamping assembly are arranged on the base plate and located on the two sides of the positioning groove correspondingly; a sucker is arranged in the positioning groove; the film tearing mechanism further comprises a moving assembly which drives the base plate to move to enable the film tearing workpiece to be close to or away from the film tearing position. The film tearing mechanism is ingenious in design, the film tearing workpiece is driven to be close to the film tearing position through the moving assembly, and the film tearing workpiece is inserted into the end of the double-faced adhesive tape on the film tearing position to separate a waste film from an adhesive layer; the suction cup is matched with the film tearing workpiece to suck the separated waste film into the positioning groove, and after the clamping assembly clamps and fixes the waste film into the positioning groove, the moving assembly pulls the base plate and the film tearing workpiece to be away from the film tearing position to tear down the waste film. The mode that non-contact adsorption and the clamping assembly are combined in a matched stripping mode is adopted, the problems of adhesive surface scratching and fingerprint pollution caused by manual operation are avoided, the mechanism is high in automation degree, the waste film can be rapidly separated from materials, manual intervention is not needed, and the film tearing efficiency is high.

Description

Technical Field

[0001] This utility model relates to a film-tearing mechanism. Background Technology

[0002] In the production of cardboard boxes, double-sided tape is widely used for bonding and sealing. To protect the adhesive properties, the surface of the double-sided tape is usually covered with a release film or protective film, which needs to be precisely removed before the lamination process. Currently, the film removal operation mainly relies on manual labor, requiring workers to use their fingers or simple tools (such as blades) to lift the edge of the film and peel it off. However, this method has the following prominent problems:

[0003] 1. The edges of the release film are often tightly adhered to the adhesive surface, making it difficult for manual positioning and lifting of the film's starting end, resulting in repeated scraping of the adhesive layer and even contamination of the adhesive surface or damage to the carton surface;

[0004] 2. The time required for manual film tearing increases significantly with the size of the carton, with a single carton operation time reaching 10-15 seconds. This is difficult to match the pace of automated production lines, resulting in high labor costs and low film tearing efficiency.

[0005] 3. Manually peeling off the film can easily leave fingerprints or leather residue on the adhesive surface, affecting the adhesion and appearance. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a film-tearing mechanism to address the above-mentioned deficiencies of the prior art.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a film-tearing mechanism, comprising a substrate; a positioning groove for waste film to pass through is provided on one end face of the substrate facing the film-tearing position; film-tearing workpieces for separating the waste film on the film-tearing position from the material are respectively provided on both sides of the positioning groove on the substrate, and clamping components for clamping and fixing the separated waste film in the positioning groove or releasing the waste film; a suction cup is provided in the positioning groove to cooperate with the film-tearing workpiece to suck the separated waste film into the positioning groove; the film-tearing mechanism further includes a moving component for driving the substrate to move so that the film-tearing workpiece moves closer to or away from the film-tearing position.

[0008] The film-tearing mechanism of this utility model further includes a waste film collection bin disposed on one side of the substrate, and an adsorption component for sucking the torn waste film into the waste film collection bin; the moving component can drive the substrate to move between the film-tearing position and the waste film collection bin.

[0009] The film-tearing mechanism of this utility model includes a rotating seat on the side of the substrate facing away from the film-tearing workpiece; the clamping assembly includes a gripper and a driving assembly; the gripper includes a gripping arm, a driving arm, and a connecting rod connecting the gripping arm and the driving arm and rotatably connected to the rotating seat; the free end of the gripping arm is fixedly provided with a gripper head that is adapted to and cooperates with the positioning groove to clamp the material; the output end of the driving assembly is movably connected to the driving arm and controls the gripper to rotate on the rotating seat so that the gripper head moves closer to or away from the positioning groove;

[0010] In the film-tearing mechanism of this utility model, the clamping arm and the driving arm are respectively located at both ends of the connecting rod; both the clamping arm and the driving arm extend outward toward the same side of the connecting rod; the outward extension direction of the clamping arm is different from the outward extension direction of the driving arm.

[0011] The film-tearing mechanism of this utility model includes a driving component comprising a Z-axis slide rail fixedly connected to the substrate, a slider slidably connected to the Z-axis slide rail and connected to the free end of the driving arm via a first rotating shaft for translation and rotation, and a lifting cylinder for driving the slider to move along the Z-axis slide rail.

[0012] The film-tearing mechanism of this utility model has multiple anti-slip teeth on the clamping surface of the gripper head facing the positioning groove.

[0013] The film-tearing mechanism of this utility model further includes a photoelectric sensor on the substrate for sensing whether the film to be peeled at the film-tearing position has been successfully peeled.

[0014] The film-tearing mechanism of this utility model includes a main body; the main body is provided with a fixing part and a film-lifting angle; the tip of the film-lifting angle extends toward the fixing part; the main body is provided with an air-avoiding groove for temporary storage of waste film between the fixing part and the film-lifting angle.

[0015] In the film-tearing mechanism of this utility model, the tip of the film-lifting angle is located outside the fixing part, and the height difference between the outer surface of the fixing part and the outer surface of the film-lifting angle is not greater than 0.4mm.

[0016] The film-tearing mechanism of this utility model includes an inner surface of the film-lifting angle that is a first inclined surface that slopes downward and inward; a side surface of the fixing part facing the film-lifting angle that is a second inclined surface that guides the waste film outward and toward the positioning groove; the first inclined surface, the second inclined surface, and the meandering curved surface connecting the first inclined surface and the second inclined surface enclose each other to form the clearance groove.

[0017] The beneficial effects of this utility model are as follows: The film-tearing mechanism has a simple structure and ingenious design. A moving component drives the film-tearing workpiece closer to the film-tearing position. The workpiece inserts into the end of the double-sided adhesive at the film-tearing position to separate the waste film from the adhesive layer. A suction cup, in conjunction with the film-tearing workpiece, sucks the separated waste film into a positioning groove. After the clamping component clamps and fixes the waste film in the positioning groove, the moving component pulls the substrate and the film-tearing workpiece away from the film-tearing position to tear off the waste film. This non-contact method of combining adsorption and clamping components with peeling avoids the problems of adhesive surface scratches and fingerprint contamination caused by manual operation. Furthermore, the mechanism has a high degree of automation, allowing the waste film to be quickly separated from the material without manual intervention, resulting in high film-tearing efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a film-tearing mechanism according to a preferred embodiment of the present invention. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the structure of a film-tearing mechanism according to a preferred embodiment of the present invention. Figure 2 .

[0021] Figure 3 yes Figure 1 A schematic diagram of the structure of the middle gripper 131.

[0022] Figure 4 yes Figure 1 A schematic diagram of the structure of the tear-off film workpiece 12. Detailed Implementation

[0023] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0026] Furthermore, the terms indicating orientation, such as "up, down, front, back, left, right, upper end, lower end, longitudinal," etc., are all based on the posture and position of the device or equipment described in this solution during normal use.

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0028] A preferred embodiment of the present invention provides a film-tearing mechanism, such as... Figure 1-4 As shown, the system includes a substrate 11; one end face of the substrate 11 facing the tearing position is provided with a positioning groove 111 for waste film to pass through, which can provide precise guidance and fixation for the waste film, which is beneficial for the subsequent peeling of the waste film; on both sides of the positioning groove 11, there are tearing workpieces 12 for separating the waste film from the material at the tearing position, and clamping components 13 for clamping and fixing the separated waste film in the positioning groove 111 or releasing the waste film; a suction cup 14 is provided in the positioning groove 111 to cooperate with the tearing workpiece 12 to suck the separated waste film into the positioning groove 111; the tearing mechanism also includes a drive The substrate 11 moves to bring the film-tearing workpiece 12 closer to or away from the film-tearing position moving component 15; the clamping component and the suction cup work together. After the waste film is torn off a section from the adhesive head by the film-tearing workpiece, the suction cup first sucks the separated waste film into the positioning groove, and then the clamping component fixes and clamps the waste film in the positioning groove to ensure that the waste film is stably located in the positioning groove, so that the moving component can drive the entire substrate to move and completely peel off the waste film. Through this precise mechanical peeling and positioning, the scratches, tears or contamination (such as fingerprints and dust) on the adhesive surface that may be caused by traditional manual film peeling are avoided, ensuring the cleanliness and integrity of the product.

[0029] This film-tearing mechanism features a simple structure and ingenious design. A moving component drives the film-tearing workpiece closer to the tearing position. The workpiece inserts into the end of the double-sided adhesive at the tearing position, separating the waste film from the adhesive layer. A suction cup, in conjunction with the workpiece, draws the separated waste film into a positioning groove. A clamping component then clamps and secures the waste film within the groove. Finally, the moving component pulls the substrate and the workpiece away from the tearing position, tearing off the waste film. This non-contact method, combining adsorption and clamping components with peeling, avoids scratches on the adhesive surface and fingerprint contamination caused by manual operation. Furthermore, the mechanism boasts a high degree of automation, allowing for rapid separation of the waste film from the material without manual intervention, resulting in high film-tearing efficiency.

[0030] Furthermore, the film-tearing mechanism also includes a waste film collection bin 16 disposed on one side of the substrate 11, and an adsorption component 17 that sucks the torn waste film into the waste film collection bin 16; the moving component 15 can drive the substrate 11 to move between the film-tearing position and the waste film collection bin 16. After the waste film is peeled off from the material and fixed in the positioning groove, the substrate moves the waste film to above the waste film collection bin, and the adsorption component directly sucks the waste film into the bin, avoiding the waste film from scattering or floating in the working area, maintaining the cleanliness of the production environment, and realizing an integrated automated process from peeling to collection. No manual or other auxiliary equipment is required for waste film transfer, reducing operation steps and waiting time, and further improving the efficiency of the entire production line. It is worth noting that the adsorption component 17 can be implemented using a vacuum adsorption device from the prior art.

[0031] Furthermore, a rotating seat 112 is provided on the side of the substrate 11 facing away from the film-tearable workpiece 12; the clamping assembly 13 includes a jaw 131 and a driving assembly 132; the jaw 131 includes a clamping arm 1311, a driving arm 1312, and a connecting rod 1313 connecting the clamping arm 1311 and the driving arm 1312 and rotatably connected to the rotating seat 112; the free end of the clamping arm 1311 is fixedly provided with a jaw head 1314 that is adapted to and cooperates with the positioning groove 111 to clamp the material. The output end of the driving assembly 132 is movably connected to the driving arm 1312 and controls the jaw 131 to rotate on the rotating seat 112 so that the jaw head 1314 moves closer to or away from the positioning groove 111. The above solution enables the movement path of the gripper head to better adapt to the need to approach the positioning slot from the side. By driving the drive arm 1312 to reciprocate through the drive component 132, the connecting rod and the rotating seat are rotated, thereby controlling the gripper head of the gripper arm to move closer to or away from the positioning slot. This not only optimizes the front layout of the equipment and improves space utilization, but also ensures the reliability and accuracy of the clamping action, achieving more precise and stable clamping and releasing actions.

[0032] Furthermore, the clamping arm 1311 and the drive arm 1312 are located at both ends of the connecting rod 1313; both the clamping arm 1311 and the drive arm 1312 extend outward toward the same side of the connecting rod 1313; the outward direction of the clamping arm 1311 is different from the outward direction of the drive arm 1312. The entire gripper 131 has a compact structure and occupies less space. The fact that the outward direction of the clamping arm 1311 is different from the outward direction of the drive arm 1312 provides sufficient space for the drive arm to receive the force or movement from the drive assembly 132, and also provides space for the clamping arm to perform clamping and releasing actions. This structure can generate a sufficiently large clamping force (at the gripper head 1314) with a relatively small driving force (from the drive assembly 132), achieving the effect of saving effort or increasing force.

[0033] Furthermore, the drive arm 1312 is provided with an elongated groove 1315 along its length for the first rotating shaft 1322 to translate and rotate. In this embodiment, the drive assembly 132 includes a Z-axis slide rail 1321 fixedly connected to the base plate 11, a slider 1323 slidably connected to the Z-axis slide rail 1321 and translated and rotatedly connected to the free end of the drive arm 1312 via the first rotating shaft 1322, and a lifting cylinder 1324 that drives the slider 1323 to move along the Z-axis slide rail 1321. The first rotating shaft 1322 can translate within the elongated groove 1315 and rotate within the groove 1315 according to the movement. During the process of slider 1323 moving vertically downward on Z-axis slide rail 1321 driven by lifting cylinder 1324, slider 1323 drives one end of drive arm to move downward, thereby causing the connecting rod to rotate, causing the clamping arm to drive the gripper head away from the positioning groove; conversely, during the process of slider 1323 moving upward, slider 1323 drives one end of drive arm to move upward, thereby causing the connecting rod to rotate in the opposite direction, causing the clamping arm to drive the gripper head closer to the positioning groove.

[0034] Alternatively, in another embodiment, the driving component may also be a telescopic motor mounted on the substrate 11. The telescopic motor is a prior art technology, and its specific structure will not be described in detail. The output end of the telescopic motor is rotatably connected to the free end of the driving component through a second rotating shaft.

[0035] Furthermore, the gripper head 1314 has multiple anti-slip teeth 1316 on its gripping surface facing the positioning groove 111. These teeth provide additional gripping force. During clamping, the teeth engage with the waste film surface, effectively preventing the waste film from sliding or shifting during clamping, especially under the tensile force that the waste film may experience during the tearing process.

[0036] Furthermore, the substrate 11 is also provided with a photoelectric sensor 18 for sensing whether the film to be peeled at the peeling position has been successfully peeled off. The photoelectric sensor 18 typically operates based on the photoelectric effect; its sensing principle is existing technology.

[0037] Successful film removal detected: When the film removal operation is successfully completed, for example, when the release film or protective film is completely peeled off and removed, the release film that originally covered the material surface and blocked or reflected light disappears. At this time, if the light reflection characteristics of the material itself (or its exposed adhesive layer) are different from those of the release film, or if the light path is changed after film removal (for example, the removed waste film is removed and no longer blocks light), the illumination conditions at the photoelectric sensor receiver will change, indicating that film removal was successful. For example, if reflected light was previously detected, the intensity of reflected light may change after film removal; if a through-beam sensor is used, the light beam may no longer be blocked after film removal.

[0038] Unsuccessful film removal (or initial state): Before removal, the release film covers the material. The release film may block the light beam (through-beam type), or its surface reflective properties may cause the intensity of the reflected light received by the receiver to be within a certain range without producing a change in the optical signal. In this case, it indicates that the film removal was unsuccessful or not removed at all.

[0039] Furthermore, the film-tearing workpiece 12 includes a main body 121; the main body 121 is provided with a fixing part 122 and a film-lifting angle 123; in this embodiment, the film-lifting angle 123 is tapered, which can first contact the edge of the release film with a smaller contact area and angle. The design of the tip extending towards the fixing part ensures that the force can be effectively concentrated at one point, making it easier to overcome the initial adhesion between the release film and the adhesive layer, providing a clear and precise starting point for the film-tearing action, and thus lifting the edge of the release film; the tip of the film-lifting angle 123 extends towards the fixing part 122. The fixing part 122 can temporarily fix the subsequent un-teared material after the film-lifting angle tears the film; the main body 121 is provided with a clearance groove 124 for temporary storage of waste film between the fixing part 122 and the film-lifting angle 123; by optimizing the film-lifting angle in conjunction with the clearance groove, the film-tearing action can be started more precisely and easily, while minimizing potential damage to waste film and the product itself, improving the quality and reliability of the film-tearing process.

[0040] Furthermore, the tip of the film-forming angle 123 is located outside the fixing part 122, and the height difference between the outer surface of the fixing part 122 and the outer surface of the film-forming angle 123 is no greater than 0.4mm, providing space for material positioning.

[0041] The inner surface of the film-forming angle 123 is a first inclined surface 125 that slopes downward and inward; the side surface of the fixing part 122 facing the film-forming angle 123 is a second inclined surface 126 that guides the waste film to move outward and toward the positioning groove 111; the first inclined surface 125, the second inclined surface 126 and the meandering curved surface 127 connecting the first inclined surface 125 and the second inclined surface 126 enclose each other to form an air-avoiding groove 124, which to a certain extent guides the initial movement direction of the waste film under the action of the film-forming angle, making it easier for it to be taken away by the subsequent suction cup or other tearing force.

[0042] This embodiment takes the tearing position being located above the workpiece to be torn as an example. The operating principle of the tearing mechanism is as follows:

[0043] 1. The outer box with double-sided tape is moved towards the film-tearing station by the external handling component until the double-sided tape is moved to the film-tearing station;

[0044] 2. The driving moving component moves the substrate 11 upward so that the film-tearing workpiece 12 is close to the film-tearing position. At this time, the grippers open outward under the action of the driving component and move away from the positioning groove.

[0045] 3. With the combined action of the moving component and the conveying component, the film-removing corner of the film-removing workpiece is inserted into one end of the double-sided adhesive, tearing the release film on the double-sided adhesive outward at a certain angle; the suction cup sucks the torn waste film into the positioning groove at the end of the substrate, at this time the drive component drives the gripper to move into the positioning groove until the waste film is clamped and fixed in the positioning groove; the moving component drives the substrate, the clamping component and the film-removing workpiece downward away from the film-removing position, thereby pulling the waste film downward to complete the film removal;

[0046] 4. Use a photoelectric sensor to identify whether the double-sided tape on the outer box has been successfully peeled off. If the film has been successfully peeled off, proceed to the next step.

[0047] 5. After the moving component moves above the waste collection bin, the adsorption component 17 is activated, and the driving component drives the gripper to release the gripping state of the waste film. The adsorption component 17 sucks the torn waste film into the waste collection bin 16.

[0048] This film-tearing mechanism improves the efficiency of tearing film from cartons and solves the problems of labor costs associated with manual film tearing. With this mechanism, the tearing process of double-sided adhesive protective film or release film on cartons becomes more efficient and precise, improving production efficiency and ensuring product quality.

[0049] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A film-tearing mechanism, characterized in that, The system includes a substrate; one end face of the substrate facing the tearing position is provided with a positioning groove for waste film to pass through; the substrate is provided with tearing workpieces on both sides of the positioning groove to separate the waste film on the tearing position from the material, and clamping components to clamp and fix the separated waste film in the positioning groove or release the waste film; the positioning groove is provided with a suction cup that cooperates with the tearing workpiece to suck the separated waste film into the positioning groove; the tearing mechanism also includes a moving component that drives the substrate to move so that the tearing workpiece moves closer to or away from the tearing position.

2. The film-tearing mechanism according to claim 1, characterized in that, The film-tearing mechanism also includes a waste film collection bin disposed on one side of the substrate, and an adsorption component that sucks the torn waste film into the waste film collection bin; the moving component can drive the substrate to move between the film-tearing position and the waste film collection bin.

3. The film-tearing mechanism according to claim 1 or 2, characterized in that, The substrate has a rotating seat on one side facing away from the workpiece being peeled off; the clamping assembly includes a jaw and a driving assembly; the jaw includes a clamping arm, a driving arm, and a connecting rod that connects the clamping arm and the driving arm and is rotatably connected to the rotating seat; the free end of the clamping arm is fixedly provided with a jaw head that is adapted to and cooperates with the positioning groove to clamp the material; the output end of the driving assembly is movably connected to the driving arm and controls the jaw to rotate on the rotating seat so that the jaw head moves closer to or away from the positioning groove.

4. The film-tearing mechanism according to claim 3, characterized in that, The clamping arm and the driving arm are located at both ends of the connecting rod, respectively; both the clamping arm and the driving arm extend outward toward the same side of the connecting rod; the direction in which the clamping arm extends outward is different from the direction in which the driving arm extends outward.

5. The film-tearing mechanism according to claim 3, characterized in that, The drive assembly includes a Z-axis slide rail fixedly connected to the base plate, a slider slidably connected to the Z-axis slide rail and connected to the free end of the drive arm via a first rotating shaft for translation and rotation, and a lifting cylinder for driving the slider to move along the Z-axis slide rail.

6. The film-tearing mechanism according to claim 3, characterized in that, The gripper head has multiple anti-slip teeth on its gripping surface facing the positioning groove.

7. The film-tearing mechanism according to claim 1, characterized in that, The substrate is also provided with a photoelectric sensor for sensing whether the film to be peeled off at the peeling position has been successfully peeled off.

8. The film-tearing mechanism according to any one of claims 1, 2, and 4-7, characterized in that, The film-tearing workpiece includes a main body; the main body is provided with a fixing part and a film-lifting angle; the tip of the film-lifting angle extends toward the fixing part; the main body is provided with an air-avoiding groove for temporary storage of waste film between the fixing part and the film-lifting angle.

9. The film-tearing mechanism according to claim 8, characterized in that, The tip of the film-forming angle is located outside the fixing part, and the height difference between the outer surface of the fixing part and the outer surface of the film-forming angle is no greater than 0.4 mm.

10. The film-tearing mechanism according to claim 8, characterized in that, The inner surface of the film-forming angle is a first inclined surface that slopes downward and inward; the side surface of the fixing part facing the film-forming angle is a second inclined surface that guides the waste film outward and towards the positioning groove; the first inclined surface, the second inclined surface, and the meandering curved surface connecting the first inclined surface and the second inclined surface enclose each other to form the clearance groove.

Images