A tape type material transfer mechanism

Abstract

The utility model discloses a kind of adhesive tape type cloth transfer mechanisms, including frame and multi-axis mechanical arm.Frame contains main frame and the adhesive tape one-way conveying mechanism of up and down floating, main frame has first runner;The shaft of adhesive tape installation on the auxiliary frame of conveying mechanism is installed, stripping shaft, bottom has adhesive tape tensioning block, adhesive tape is connected two shafts around tensioning block.Stripping shaft is installed in auxiliary frame by one-way bearing, bearing is connected connecting rod, the pulley of connecting rod runner is matched with first runner.When conveying mechanism moves up, pulley drives connecting rod swing, makes stripping shaft one-way rotation by one-way bearing, transfers adhesive tape, ensure that the bottom of tensioning block is always new adhesive tape.It is firm, precision is high, solve existing chuck displacement or suction control problem, suitable for industrial sewing machine automation cloth transfer.

Description

Technical Field

[0001] This utility model relates to industrial sewing machines, specifically to a tape-type fabric transfer mechanism. Background Technology

[0002] In automated sewing production lines, the precise picking and transfer of fabric is a crucial factor affecting the overall production cycle time and finished product quality. Currently, the industry commonly employs two solutions:

[0003] 1. Non-contact oblique airflow suction cup

[0004] This method utilizes a high-speed, oblique airflow to create a localized negative pressure below the suction cup, suspending and "lifting" the fabric for transfer. While non-contact, this avoids indentations on thin fabrics. However, during horizontal movement, the fabric is prone to slippage due to inertia or airflow disturbances, leading to positioning errors. Furthermore, fabrics of different weights and breathability exhibit vastly different sensitivities to negative pressure attenuation, requiring significant adjustments to the suction cup height and airflow parameters, making consistency difficult to guarantee and failing to meet the "zero-shift" requirements of high-precision sewing.

[0005] 2. Vacuum perforated plate / vacuum chamber suction cup

[0006] Vacuum holes can be directly created on the surface of the suction cup, or fabric can be adsorbed using a multi-cavity vacuum system. Its advantages are simple structure and fast response, but it has the following drawbacks:

[0007] 1) The suction power is difficult to control linearly. If the suction power is too weak, thick or rough fabrics are easy to fall off; if the suction power is too strong, multiple layers of fabric are often sucked up at once, causing "multiple pieces to stick together".

[0008] 2) Vacuum holes are easily clogged by fabric lint, requiring frequent maintenance; if the pore size is too large, it will leave indentations on the fabric surface, while if the pore size is too small, the adsorption area will be insufficient.

[0009] 3) Traditional vacuum suction cups are extremely unsuitable for special fabrics with coatings, fuzz, or high elasticity, often requiring manual intervention to separate the fabrics, which severely restricts the automation level of the entire production line.

[0010] Therefore, the market urgently needs a new type of fabric transfer mechanism that can both ensure "precise single-sheet pick-up and drop" and "adapt to different materials" in order to solve the bottlenecks of existing suction cups in terms of displacement accuracy, suction control and fabric adaptability. Utility Model Content

[0011] This utility model provides a tape-type fabric transfer mechanism, which includes a frame and a multi-axis robotic arm. The frame includes a main frame and a tape unidirectional conveying mechanism that is vertically and horizontally mounted on the main frame.

[0012] The main frame has a first sliding groove in the vertical direction;

[0013] The unidirectional conveyor belt mechanism includes an auxiliary frame, on which a conveyor belt mounting shaft and a conveyor belt peeling shaft are mounted in parallel front and rear. A conveyor belt tensioning block is installed at the bottom of the auxiliary frame, located between the conveyor belt mounting shaft and the conveyor belt peeling shaft.

[0014] The tape wound on the tape mounting shaft passes over the bottom of the tape tensioning block and is wound onto the rotatable tape peeling shaft. One end of the tape peeling shaft is rotatably mounted on the auxiliary frame via a one-way bearing. A connecting rod is mounted on the one-way bearing, and the other end of the connecting rod is provided with a second slide groove. A pulley is slidably installed in the second slide groove, and the pulley is also slidably engaged with the first slide groove.

[0015] When the main frame of the conveyor belt moves upward, the pulley drives the connecting rod to swing. The swinging connecting rod drives the belt peeling shaft to rotate in one direction through the one-way bearing, and transfers the belt on the belt mounting shaft to the belt peeling shaft.

[0016] Furthermore, the main frame is fixedly connected to a tape peeling plate, which has openings at the top and bottom for the tape tensioning block to pass through. The front and rear sides of the tape tensioning block are provided with gaps between the openings and the tape to pass through and out.

[0017] Furthermore, the unidirectional conveyor belt mechanism is also connected to a drive cylinder, which is connected to the auxiliary frame and drives the auxiliary frame to move up and down.

[0018] Furthermore, one end of the tape mounting shaft is fixedly connected to the auxiliary frame, while the other end is detachably connected to an end cap.

[0019] A tape roll is detachably and rotatably mounted on the tape mounting shaft. An elastic spring is provided on the tape mounting shaft, and the elastic spring is tensioned and engaged with the inner ring of the tape roll.

[0020] Furthermore, two rolls of tape are mounted on the tape mounting shaft, and the tape tensioning block is provided with a dividing block located between the two rolls of tape.

[0021] The tape-type fabric transfer mechanism of this utility model has the following significant advantages:

[0022] 1. Stable Adsorption: The tape adsorption method avoids relative displacement between the fabric and the adsorption component during lateral movement, compared to traditional non-contact suction cups, ensuring that the fabric is accurately delivered to the target processing position. Compared to pure vacuum suction cups, the adhesive force of the tape is easier to control, preventing the fabric from falling off due to insufficient suction or adsorbing multiple pieces of fabric at once due to excessive suction, thus adapting to the automated transfer needs of different fabric materials.

[0023] 2. Automatic Tape Refreshing: Through the linkage design of one-way bearings, connecting rods, pulleys, and chutes, after each fabric transfer, the one-way conveyor mechanism drives the tape stripping shaft to rotate in one direction as it moves upward. This winds the tape that has been bonded to the fabric onto the stripping shaft, while simultaneously conveying new tape to the bottom of the tape tensioning block. This mechanism ensures that each time fabric is bonded, only unused, new tape comes into contact with the fabric, completely avoiding transfer failures caused by decreased tape adhesion and significantly improving the stability of continuous operations.

[0024] 3. Ingenious structural design and easy operation:

[0025] 3.1 The tape mounting shaft adopts a detachable end cap design, which, together with the elastic spring, fixes the tape roll. This not only prevents the tape roll from rotating randomly to maintain tension, but also facilitates quick tape replacement and reduces maintenance costs.

[0026] 3.2 The combination design of double tape rolls and dividing blocks can simultaneously transfer wide fabrics or multiple pieces of fabric, improving work efficiency and preventing the tapes from sticking together. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a structural diagram of a tape-type fabric transfer mechanism according to one embodiment of the present invention;

[0029] Figure 2 This is a partial structural diagram of a tape-type fabric transfer mechanism in one embodiment;

[0030] Figure 3 This is a perspective view of the tape-type fabric transfer mechanism from a bottom view in one embodiment;

[0031] Figure 4 This is a schematic diagram of one roll of tape on a hidden tape mounting shaft in one embodiment;

[0032] Figure 5 This is a diagram showing the tape-type fabric transfer mechanism moving directly above the fabric.

[0033] Figure 6 This is a schematic diagram of a tape-type fabric transfer mechanism pressing against the upper surface of the fabric. Detailed Implementation

[0034] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0035] To fully understand this utility model, detailed steps and structures will be presented in the following description to illustrate the technical solution of this utility model. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0036] Reference Figure 1-6 As shown, this utility model provides a tape-type fabric transfer mechanism. The mechanism includes a frame and a multi-axis robotic arm. The frame includes a main frame 100 and a tape unidirectional conveying mechanism 200 that is vertically and horizontally mounted on the main frame 100. The main frame 100 has a first vertical groove 101, and the tape unidirectional conveying mechanism 200 slides vertically along the first groove 101.

[0037] The main body of the unidirectional conveying mechanism 200 is the auxiliary frame 201, which serves as a support platform on which components for conveying and tensioning the conveyor belt are installed. In the front-rear direction of the auxiliary frame 201, a conveyor belt mounting shaft 210 and a conveyor belt peeling shaft 220 are installed in parallel. The former is used to place the conveyor belt roll to be used, and the latter is used to recycle the used conveyor belt. At the bottom of the auxiliary frame 201, and directly below the conveyor belt mounting shaft 210 and the conveyor belt peeling shaft 220, a conveyor belt tensioning block 230 is installed. Its bottom is designed with a smooth arc or flat surface to allow the conveyor belt to fit tightly against its surface and maintain tension.

[0038] The tape 212-1, wound on the tape mounting shaft 210, extends downwards, passes around the bottom of the tape tensioning block 230 (the adhesive side of this portion of the tape faces down, used to contact and adhere to the fabric), then folds upwards and finally winds onto the rotatable tape peeling shaft 220. To achieve unidirectional conveying of the tape 212-1, one end of the tape peeling shaft 220 is connected to the auxiliary frame 201 via a one-way bearing 221. The one-way bearing 221 is characterized by transmitting torque only in one direction, rotating freely in the opposite direction to ensure that the tape does not retract. A connecting rod 222 is fixedly mounted on the one-way bearing 221. The other end of the connecting rod 222 has a second groove 223 along its length. A pulley 224 is embedded in the groove. This pulley can not only slide freely in the second groove 223, but also simultaneously embed in the first groove 101 of the main frame 100, forming a "one pulley, two grooves" mating structure.

[0039] Furthermore, the vertical movement of the unidirectional conveying mechanism 200 is driven by the drive cylinder 240: the cylinder body of the drive cylinder 240 is fixedly installed on the upper part or side of the main frame 100, and the end of its piston rod is rigidly connected to the auxiliary frame 201. Through the extension and retraction of the piston rod, the entire unidirectional conveying mechanism 200 can be driven to move vertically along the first slide 101. When the drive cylinder 240 drives the unidirectional conveying mechanism 200 to move upward, the pulley 224 will slide upward along the first slide 101 at the same time. Since the first slide 101 is fixed on the main frame 100, its guiding effect will force the connecting rod 222 to swing around the one-way bearing 221 as the fulcrum. The swinging connecting rod 222 transmits torque to the tape peeling shaft 220 through the one-way bearing 221, driving it to rotate unidirectionally along the winding direction, thereby gradually transferring the new tape on the tape mounting shaft 210 to the tape peeling shaft 220. The core function of this process is to wind the tape that has been in contact with the fabric at the bottom of the tape tensioning block 230 (which has become less sticky due to the contamination of fabric fibers) onto the peeling shaft, ensuring that the bottom of the tape tensioning block 230 is always a new, unused tape when bonding the fabric again, thus guaranteeing the reliability of each bonding.

[0040] In an optional embodiment, a horizontally positioned tape peeling plate 110 is fixedly connected to the bottom of the main frame 100. The tape peeling plate 110 is positioned slightly higher than the initial position of the tape tensioning block 230 to separate the fabric from the tape. An opening 111 is provided vertically through the middle of the tape peeling plate 110. The shape of the opening matches the cross-section of the tape tensioning block 230, but its size is slightly larger, ensuring that the tape tensioning block 230 can smoothly pass through the opening and move up and down. Simultaneously, two narrow gaps are reserved between the front and rear sides of the tape tensioning block 230 and the inner wall of the opening 111. New tape on the tape mounting shaft 210 enters through one gap, passes around the bottom of the tape tensioning block 230, and then exits through the other gap and connects to the tape peeling shaft 220. After the fabric is transferred to the target station, the tape tension block 230 moves up with the frame, while the tape peeling plate 110 remains stationary. The tape peeling plate 110 prevents the fabric from moving with the tape, thus separating the fabric from the one-way tape conveying mechanism 200 and ensuring that the fabric remains at the station.

[0041] In an optional embodiment, one end of the tape mounting shaft 210 is rigidly connected to the auxiliary frame 201, while the other end is detachably connected to an end cap 211 via a threaded or snap-fit ​​structure. When the tape roll needs to be replaced, simply remove the end cap 211 to remove the used tape roll, then put on a new tape roll, and finally reinstall the end cap 211. The entire process is tool-free and convenient. To further ensure the tension of the tape during conveying, several elastic springs 213 are also fitted on the tape mounting shaft 210. These springs are evenly distributed along the circumference of the mounting shaft and have a certain elastic tension. When the tape roll 212 is placed on the elastic springs 213, the springs are slightly compressed and tightly adhere to the inner wall of the tape roll, generating continuous friction. This prevents the tape roll from rotating arbitrarily due to its own weight or vibration when not in operation, ensuring that the tape passing through the tape tensioning block 230 is always taut and will not become loose or wrinkled.

[0042] Further preferably, to improve the synchronous transfer efficiency of wide fabrics or multiple pieces of fabric, two rolls of adhesive tape 212 can be installed in parallel on the tape mounting shaft 210, with a certain distance between the two rolls. The distance can be adjusted according to the width of common fabrics or the number of fabrics to be transferred synchronously. Correspondingly, a dividing block 231 is integrally formed in the middle of the tape tensioning block 230, located between the two rolls of adhesive tape. When the two rolls of tape pass over the bottom of the tape tensioning block 230, the dividing block 231 separates the two pieces of tape, preventing them from sticking or tangling during tensioning or movement. This ensures that each piece of tape can independently and stably contact the fabric, thereby improving the overall adhesion reliability and transfer stability.

[0043] The working process of this utility model is described in detail below:

[0044] 1) Initial Positioning Stage: The multi-axis robotic arm, based on a preset program or visual positioning signal, moves the entire frame to directly above the fabric 1 to be transferred. At this time, the unidirectional conveyor belt mechanism 200 is in its initial state, i.e., the piston rod of the drive cylinder 240 is extended, causing the auxiliary frame 201 and the belt tensioning block 230 to move downwards, so that the bottom of the belt tensioning block 230 slightly protrudes from the lower surface of the belt peeling plate 110 (e.g., ...). Figure 3 As shown), ensure that it can make priority contact with the fabric, and that the adhesive side of the tape at the bottom of the tape tensioning block 230 is facing down and is in a state of waiting to be bonded.

[0045] 2) Fabric bonding stage: The multi-axis robotic arm moves slowly downwards along the set trajectory to avoid impacting the fabric and causing wrinkles or displacement, until the adhesive surface of the tape at the bottom of the tape tensioning block 230 is in complete contact with the upper surface of the fabric.

[0046] 3) Transfer and Placement Stage: After the fabric is bonded, the multi-axis robotic arm first moves the entire frame upwards to a certain height, and then moves along a preset transverse path, transferring the frame and the fabric bonded to the bottom of the tape tensioning block 230 together to the next processing station. Upon reaching the station, the multi-axis robotic arm descends again, gently attaching the fabric to the table surface of the current station.

[0047] 4) Tape replacement stage: After the fabric is placed in place, the piston rod of the drive cylinder 240 retracts, driving the tape unidirectional conveying mechanism 200 to move upward as a whole, causing the tape tensioning block 230 to gradually move upward away from the opening 111 of the tape peeling plate 110. Since the fabric is pressed and fixed on the table by the tape peeling plate 110, the tape will separate from the fabric under the obstruction of the edge of the peeling plate. During the upward movement of the unidirectional conveyor belt 200, the pulley 224 slides upward along the first groove 101 of the main frame 100 and simultaneously slides in the second groove 223 of the connecting rod 222. This combined motion forces the connecting rod 222 to swing around the one-way bearing 221 as the fulcrum. The swinging connecting rod 222 transmits torque to the tape peeling shaft 220 through the one-way bearing 221, driving it to rotate unidirectionally along the winding direction, thereby winding the tape portion that has been bonded to the fabric onto the tape peeling shaft 220, while simultaneously pulling the new tape on the tape mounting shaft 210 to the bottom of the tape tensioning block 230. When the drive cylinder 240 moves the auxiliary frame 201 down to reset, the connecting rod 222 swings in the opposite direction. However, due to the one-way locking characteristic of the one-way bearing 221, the tape peeling shaft 220 will not rotate in the opposite direction, ensuring that the wound tape will not roll back. This ensures that when bonding the fabric in the next round, the bottom of the tape tensioning block 230 is always a new, unused tape, maintaining a stable bonding effect.

[0048] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. A tape-type fabric transfer mechanism, characterized in that, The mechanism includes a frame and a multi-axis robotic arm. The frame includes a main frame and a belt conveyor mechanism that is vertically and horizontally mounted on the main frame. The main frame has a first sliding groove in the vertical direction; The unidirectional conveyor belt mechanism includes an auxiliary frame, on which a conveyor belt mounting shaft and a conveyor belt peeling shaft are mounted in parallel front and rear. A conveyor belt tensioning block is installed at the bottom of the auxiliary frame, located between the conveyor belt mounting shaft and the conveyor belt peeling shaft. The tape wound on the tape mounting shaft passes over the bottom of the tape tensioning block and is wound onto the rotatable tape peeling shaft. One end of the tape peeling shaft is rotatably mounted on the auxiliary frame via a one-way bearing. A connecting rod is mounted on the one-way bearing, and the other end of the connecting rod is provided with a second slide groove. A pulley is slidably mounted in the second slide groove, and the pulley is also slidably engaged with the first slide groove. When the main frame of the conveyor belt moves upward, the pulley drives the connecting rod to swing. The swinging connecting rod drives the belt peeling shaft to rotate in one direction through the one-way bearing, and transfers the belt on the belt mounting shaft to the belt peeling shaft.

2. The tape-type fabric transfer mechanism as described in claim 1, characterized in that, The main frame is fixedly connected to a tape peeling plate. The tape peeling plate has openings at the top and bottom for the tape tensioning block to pass through. There are gaps between the front and rear sides of the tape tensioning block and the openings for the tape to pass through and exit.

3. The tape-type fabric transfer mechanism as described in claim 1, characterized in that, The unidirectional conveyor belt mechanism is also connected to a drive cylinder, which is connected to the auxiliary frame and drives the auxiliary frame to move up and down.

4. The tape-type fabric transfer mechanism as described in claim 1, characterized in that, One end of the tape mounting shaft is fixedly connected to the auxiliary frame, and the other end is detachably connected to an end cap. A tape roll is detachably and rotatably mounted on the tape mounting shaft. An elastic spring is provided on the tape mounting shaft, and the elastic spring is tensioned and engaged with the inner ring of the tape roll.

5. The tape-type fabric transfer mechanism as described in claim 4, characterized in that, Two rolls of tape are mounted on the tape mounting shaft, and the tape tensioning block has a dividing block located between the two rolls of tape.

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