Hand-held buckle fastener

Abstract

A hand-held buckle collecting machine, comprising a frame, a collecting disc is arranged on the frame, a winding motor is arranged at the center of the collecting disc, and the rotating direction of the winding motor is such that the hand-held buckle material belt on the collecting disc is tightened on the collecting disc, the number of the collecting discs is two groups, each group of collecting discs is provided with a pre-tightening wheel at the entrance of the hand-held buckle material channel, and the hand-held buckle material belt is abutted on the pre-tightening wheel and connected to the winding motor. The utility model has the beneficial effects that: through the arrangement of two groups of collecting discs, when one of the collecting discs is full of the hand-held buckle material belt, the operator can cut the material belt and directly hang it on the other collecting disc to start winding, without stopping the machine to wait for the full material belt disc to complete the discharging, effectively avoiding the problem of frequent start and stop of the injection molding machine due to the interruption of material collection.

Description

Technical Field

[0001] This utility model relates to a material receiving device, and more particularly to a hand-held buckle receiving machine. Background Technology

[0002] In existing technologies, injection-molded handle strips are widely used in the production of various packaging products, such as handle components for plastic bags, cartons, and gift boxes. The typical process involves injecting molten plastic into a mold cavity using an injection molding machine. After cooling and solidification, the plastic is continuously extruded to form a long strip with multiple handles. The strip is then conveyed to a receiving device via a traction mechanism, where it is wound into a coil for subsequent transport to the assembly station for cutting and installation.

[0003] Existing handheld strip take-up devices typically employ a structure where a take-up motor directly drives a take-up disc. During the take-up process, the disc continuously winds the strip until it is full. Once the take-up disc is full, the machine must be stopped to replace it with a new empty disc. During this process, the injection molding machine is forced to stop production because there is nowhere to wind the strip. Frequent stop-and-start operations require repeated preheating of the injection molding machine, which consumes valuable production time. Furthermore, frequent starts and stops increase energy consumption and failure rates, severely hindering the improvement of overall production efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a handle buckle retractor that avoids frequent start-up and shutdown of injection molding machines, thereby reducing production efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a handle buckle rewinding machine, comprising a frame, wherein a take-up disc is provided on the frame, and a winding motor is provided at the center of the take-up disc, and the rotation direction of the winding motor causes the handle buckle material strip located on the take-up disc to be tightened on the take-up disc. The number of take-up discs is two sets, and each set of take-up discs is provided with a pre-tensioning wheel at the entrance of its handle buckle material channel, and the handle buckle material strip abuts against the pre-tensioning wheel, passes through and is connected to the winding motor.

[0006] The beneficial effects of this invention are as follows: By setting two sets of take-up discs, when one take-up disc is full of the handle strap material, the operator can cut the material and directly attach it to the other take-up disc to start winding. During this process, there is no need to stop the machine and wait for the full disc to unload, effectively avoiding the problem of frequent machine starts and stops due to interrupted take-up. The pre-tensioning roller provides initial tension before the material enters the take-up disc, preventing uneven winding due to slack in the material. As a preferred embodiment, the two sets of take-up discs can be arranged coaxially, achieving rapid disc changing by switching the material guide path. As another preferred embodiment, the drive system of the take-up discs can be equipped with an independent clutch, achieving seamless power transmission during disc changing through clutch switching, further improving operating efficiency. This dual-disc structure design enables continuous production of the injection molding machine, reduces the equipment preheating time, and significantly improves overall production efficiency.

[0007] Furthermore, it also includes a baffle plate rotatably mounted on the frame, with the center lines of the two receiving discs coinciding and the rotating end of the baffle plate located at the center between the two receiving discs; the baffle plate has a fixed end at the other end relative to the rotating end, and the two receiving discs have positioning elements at the other end relative to the rotating end of the baffle plate for cooperating with the fixed end.

[0008] The baffle plate provides circumferential restraint to the strip wound on the take-up disc, preventing it from detaching from the disc edge during winding due to centrifugal force or tension fluctuations. The rotating design allows the baffle plate to be switched between two sets of take-up discs. When one set of discs is in operation, the baffle plate is positioned by engaging a corresponding positioning element at its fixed end. Changing discs simply requires releasing the positioning element and rotating the baffle plate to fit the other set, simplifying the structure and improving space utilization. As a preferred option, the positioning element can employ a flexible snap-fit ​​structure, providing a certain pre-tightening force after the baffle plate's fixed end engages, preventing accidental loosening during operation. Alternatively, the baffle plate's rotating shaft can be equipped with a damping mechanism, ensuring stable rotation and preventing positioning deviations due to inertia.

[0009] Furthermore, the positioning element is columnar, and the upper and lower sides of the fixed end are respectively provided with slots that cooperate with the positioning element.

[0010] The combination of the columnar positioning element and the double-sided slots provides constraint on the baffle plate from both above and below. Compared to a single-sided slot, it offers stronger anti-overturning capability and effectively prevents the baffle plate from deflecting or dislodging under the tension of the conveyor belt. The inner wall of the slot can be designed as an arc-shaped transition surface, allowing the positioning element to automatically center itself during insertion, reducing operational difficulty. As a preferred method, the depth of the slot can be slightly greater than the diameter of the positioning element, achieving an interference fit with an elastic washer. As another preferred method, an annular groove can be provided on the outer periphery of the positioning element, with corresponding ribs inside the slot, further enhancing connection stability through the interlocking fit.

[0011] Furthermore, it also includes a material distribution plate corresponding to the number of receiving discs. The material distribution plate is rotatably mounted on the frame. The receiving disc includes a base plate, and the material distribution plate is located at the center between the baffle plate and the base plate.

[0012] The dividing plate creates two independent winding spaces between the baffle plate and the chassis, allowing the two sets of strips to be wound in layers within the same axial space, avoiding the problem of excessive lateral space occupied by traditional parallel arrangements. The rotating dividing plate can be adjusted in angle according to winding requirements. When one set of discs is winding, the dividing plate isolates the space of the other set of discs, preventing the strips from crossing and tangling. As a preferred option, the dividing plate can be made of transparent acrylic material, making it easy for operators to observe the winding status of the strips; as another preferred option, the edge of the dividing plate can be equipped with guide bevels to guide the strips smoothly to the target disc when changing discs.

[0013] Furthermore, it also includes a tension judging wheel that is slidably mounted on the frame. The handle buckle material belt passes through the tension judging wheel from below and is used to drive the tension judging wheel to move upward. When the tension judging wheel rises to a predetermined position, the winding motor stops working.

[0014] The tension judgment wheel automatically starts and stops the winding motor by sensing changes in the material strip tension. When the material strip produced by the injection molding machine enters the winding stage, the strip tension gradually increases, causing the judgment wheel to move upward. This triggers a limit switch, stopping the motor and preventing excessive tension from causing the strip to break. After the injection molding machine completes one mold cycle, the strip tension is released, the judgment wheel descends under its own weight, and the motor restarts winding. As a preferred method, multiple limit sensors can be installed on the sliding track of the tension judgment wheel to achieve graded control with different tension thresholds. Alternatively, the wheel surface can be covered with a rubber layer to increase friction with the material strip while preventing damage to the strip surface.

[0015] Furthermore, it also includes a material belt guiding device, which includes an arc-shaped guide plate. The straight line connecting the exit of the handle-lock material belt on the guide plate and the entrance of the handle-lock material belt on the pre-tensioning wheel is inclined.

[0016] The curved guide plate allows the belt to form a smooth, curved path before entering the pre-tensioning roller. The inclined inlet and outlet lines create a wrap angle on the pre-tensioning roller, increasing friction and improving pre-tensioning effect. The curvature of the guide plate can be designed according to the material properties of the belt to ensure that the belt is neither overstretched nor wrinkled during the guiding process. As a preferred option, the inner surface of the guide plate can be coated with a low-friction coefficient coating to reduce belt conveying resistance; as another preferred option, the outlet end of the guide plate can be equipped with an adjustable limiting stop to adapt to the guiding requirements of belts of different widths. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the cooperative structure between the receiving disc and the baffle plate in an embodiment of this utility model; Figure 3 This is a partial enlarged view of the guide plate in an embodiment of this utility model. Detailed Implementation

[0018] This utility model embodiment provides a hand-held buckle fastening machine, such as... Figure 1-3 As shown: The machine includes a frame 1, on which two sets of take-up discs 2 are mounted. A winding motor 3 is located at the center of each take-up disc 2. The rotation direction of the winding motor 3 causes the handle strap material on the take-up disc 2 to be tightened. A pre-tensioning wheel 4 is located at the inlet of the handle strap material channel on each take-up disc 2. The handle strap material passes through the pre-tensioning wheel 4 and connects to the winding motor 3. A baffle plate 5 is rotatably mounted on the frame 1. The centerlines of the two take-up discs 2 coincide, and the rotating end 52 of the baffle plate 5 is located at the center between the two take-up discs 2. A fixed end 51 is located at the other end of the baffle plate 5 relative to the rotating end 52. Positioning elements 6, which are columnar, are located at the other end of the two take-up discs 2 relative to the rotating end 52 of the baffle plate 5, respectively, to cooperate with the fixed end 51. The upper and lower sides of the fixed end 51 are respectively provided with slots 511 that cooperate with the positioning elements 6. The frame 1 is also equipped with a material distribution plate 7 corresponding to the number of take-up discs 2. The material distribution plate 7 is rotatably mounted on the frame 1. The take-up disc 2 includes a base plate 21, and the material distribution plate 7 is located at the center between the baffle plate 5 and the base plate 21. A tension judgment wheel 8 is slidably mounted on the frame 1. The handle-locking material belt passes through the tension judgment wheel 8 from below and drives the tension judgment wheel 8 to move upward. When the tension judgment wheel 8 rises to the predetermined position, the winding motor 3 stops working. In addition, the frame 1 is also equipped with a material belt guide device 9, which includes an arc-shaped guide plate 91. The straight line connecting the exit point of the handle-locking material belt on the guide plate 91 and the entrance point of the handle-locking material belt on the pre-tensioning wheel 4 is inclined.

[0019] The working principle of this embodiment is as follows: In actual use, after the handle buckle material strip is formed by the injection molding machine, it is first guided by the guide plate 91 of the material strip guide device 9, and then passes around the tension judgment wheel 8 and the pre-tension wheel 4 respectively and enters one of the take-up discs 2. The take-up disc 2 is driven by the take-up motor 3 to take up the material strip. During the take-up process, the baffle plate 5 cooperates with the corresponding positioning part 6 through the slot 511 of the fixed end 51 to form a circumferential limit on the material strip; the dividing plate 7 separates an independent space between the baffle plate 5 and the chassis 21 to avoid mutual interference between the material strips of the two sets of discs. When the tension of the material strip increases during the take-up process, the tension judgment wheel 8 is pushed upward by the material strip. After rising to the predetermined position, it triggers a control signal to stop the take-up motor 3 to prevent the material strip from breaking; when the injection molding machine completes the production of the next mold, the tension is released, the tension judgment wheel 8 falls, and the take-up motor 3 restarts. When a set of receiving discs 2 is full, the operator cuts the material strip, hangs it on another set of empty discs, and starts the corresponding winding motor 3. At the same time, the baffle plate 5 is rotated to mate with the positioning part 6 of the new disc. During this process, the injection molding machine does not need to stop, thus achieving continuous production.

[0020] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A handle buckle rewinding machine, comprising a frame, wherein a take-up disc is provided on the frame, and a winding motor is provided at the center of the take-up disc, the rotation direction of the winding motor causing the handle buckle material strip located on the take-up disc to be tightened on the take-up disc, characterized in that: The number of take-up discs is two sets. Each set of take-up discs is equipped with a pre-tensioning wheel at the inlet of its handle buckle material channel. The handle buckle material belt abuts against the pre-tensioning wheel, passes through and is connected to the winding motor.

2. The hand-held buckle fastening machine according to claim 1, characterized in that: It also includes a baffle plate that is rotatably mounted on the frame, with the center lines of the two receiving discs coinciding and the rotating end of the baffle plate located at the center between the two receiving discs; the baffle plate has a fixed end at the other end relative to the rotating end, and the two receiving discs have positioning elements at the other end relative to the rotating end of the baffle plate for cooperating with the fixed end.

3. The hand-held buckle fastening machine according to claim 2, characterized in that: The positioning element is columnar, and the upper and lower sides of the fixed end are respectively provided with slots that cooperate with the positioning element.

4. The hand-held buckle fastening machine according to claim 2, characterized in that: It also includes a material distribution plate for the corresponding number of receiving discs. The material distribution plate is rotatably mounted on the frame. The receiving disc includes a base plate. The material distribution plate is located at the center between the baffle plate and the base plate.

5. The hand-held buckle fastening machine according to claim 1, characterized in that: It also includes a tension judging wheel that is slidably mounted on the frame. The handle buckle material belt passes through the tension judging wheel from below and is used to drive the tension judging wheel to move upward. When the tension judging wheel rises to a predetermined position, the winding motor stops working.

6. The hand-held buckle fastening machine according to claim 1, characterized in that: It also includes a material belt guiding device, which includes an arc-shaped guide plate. The straight line connecting the exit of the material belt with the handle on the guide plate and the entrance of the material belt with the handle on the pre-tensioning wheel is inclined.

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