Automatic weighing and cutting device for adhesive tape

Abstract

This utility model relates to an automatic weighing and cutting device for rubber strips. Firstly, by coordinating a roller weighing machine and a cutting device, it completely changes the traditional "stacking first, then weighing" production mode. When the extruder extrudes the rubber strip, the strip falls directly into the weighing chamber on the roller weighing machine, which monitors the strip's weight in real time. Once the strip's weight reaches the specified standard, the cutting device immediately activates, precisely cutting the strip above the roller weighing machine to directly obtain a rubber strip that meets the specified weight. This process eliminates subsequent secondary weighing, handling, and cutting steps, significantly shortening the production process, greatly improving production efficiency, and drastically reducing the time from extrusion to becoming a qualified finished product.

Description

Technical Field

[0001] This utility model relates to the technical field of adhesive strip processing equipment, and in particular to an automatic weighing and cutting device for adhesive strips. Background Technology

[0002] Currently, rubber strips are typically extruded directly from an extruder and then piled haphazardly in crates. At this stage, the strips are continuous and unweighed. Because the weight of the strips must meet specified standards for shipment, a second weighing is necessary. During this process, workers must move the crates of strips to the weighing equipment. If the weight exceeds the specified value, the strips must be cut; if the weight is insufficient, additional strips must be added. This cumbersome and time-consuming process not only adds extra handling and processing steps, leading to longer production cycles and reduced efficiency, but also fails to meet the demands of modern large-scale production. Utility Model Content

[0003] The present invention aims to at least partially solve one of the problems existing in the existing related technologies. To this end, the present invention proposes an automatic weighing and cutting device for adhesive strips.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An automatic weighing and cutting device for rubber strips includes a roller conveyor line, a cutting device, and a pushing device. The roller conveyor line includes a preparatory roller conveyor, a roller weighing machine, and a discharge roller conveyor arranged sequentially. The roller weighing machine is equipped with a weighing box for holding the extruded rubber strips. The preparatory roller conveyor is equipped with a preparatory box. The cutting device is located above the roller weighing machine and is used to cut the extruded rubber strips. The pushing device is used to push the preparatory box onto the roller weighing machine and simultaneously push the weighing box onto the discharge roller conveyor.

[0006] In some embodiments, the cutting device includes an arched frame, a rubber strip guide conveyor is provided on the arched frame, a cylinder bracket is provided on the rubber strip guide conveyor, a first cylinder is provided on the cylinder bracket, the piston rod of the first cylinder is vertically downward and a cutter is installed thereon, and the first cylinder is signal connected to the roller weighing machine.

[0007] In some embodiments, a guide plate slides left and right on the rubber strip guide conveyor table.

[0008] In some embodiments, an avoidance groove is provided on the adhesive strip guide conveyor and directly below the cutter.

[0009] In some embodiments, the pusher device includes a support frame disposed on one side of the roller conveyor line, a linear screw module disposed on the support frame, and a pusher plate disposed on the linear screw module for pushing the pre-packet to move.

[0010] In some embodiments, the preparatory roller conveyor and the roller weighing machine are arranged horizontally, while the unloading roller conveyor is arranged at a downward inclination.

[0011] In some embodiments, a second cylinder is provided below the roller conveyor line. The piston rod of the second cylinder is vertically upward and a connecting plate is installed thereon. The connecting plate extends in the front-to-back direction and a first baffle and a second baffle are respectively provided at the front and rear ends. The first baffle can extend above the preparatory roller conveyor to restrict the movement of the preparatory box, and the second baffle can extend above the roller weighing machine to restrict the movement of the weighing box.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. Firstly, by coordinating the roller weighing machine with the cutting device, the traditional "stacking first, then weighing" production model is completely changed. When the extruder extrudes the rubber strip, the strip falls directly into the weighing chamber on the roller weighing machine, which can monitor the weight of the strip in real time. Once the weight of the strip reaches the specified standard, the cutting device immediately activates, precisely cutting the strip above the roller weighing machine, thus directly obtaining a strip that meets the specified weight. This process eliminates subsequent secondary weighing, handling, and cutting steps, significantly shortening the production process, greatly improving production efficiency, and drastically reducing the time from extrusion to becoming a qualified finished product.

[0014] 2. By sequentially setting up the preparatory roller conveyor, roller weighing machine, and unloading roller conveyor, and coordinating with the push box device, a continuous production line is formed. The push box device pushes the preparatory box to the roller weighing machine while simultaneously pushing the weighing box containing the weighed and cut rubber strips to the unloading roller conveyor. This realizes the cyclical turnover of the boxes and the continuous operation of rubber strip production, avoiding interruptions and waiting in the production process, and further improving the overall production efficiency. Attached Figure Description

[0015] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model.

[0016] Figure 2 This is the second three-dimensional structural schematic diagram of the present invention.

[0017] Figure 3 This is a cross-sectional view of the present invention.

[0018] Figure 4 This utility model Figure 2 A magnified structural diagram at point A. Detailed Implementation

[0019] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of this utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0020] like Figures 1-4 The automatic weighing and cutting device for rubber strips shown includes a roller conveyor line, a cutting device, and a pushing device. The roller conveyor line includes a preparatory roller conveyor 1, a roller weighing machine 2, and a discharge roller conveyor 3 arranged sequentially. The roller weighing machine 2 is equipped with a weighing box 4 for holding the extruded rubber strips. The preparatory roller conveyor 1 is equipped with a preparatory box 5. The cutting device is located above the roller weighing machine 2 and is used to cut the extruded rubber strips. The pushing device is used to push the preparatory box 5 onto the roller weighing machine 2 and simultaneously push the weighing box 4 onto the discharge roller conveyor 3.

[0021] Based on the above structure, the traditional "stacking first, then weighing" production mode is completely changed by coordinating the roller weighing machine 2 with the cutting device. When the extruder extrudes the rubber strip, the strip falls directly into the weighing box 4 on the roller weighing machine 2, where the weight of the strip can be monitored in real time. Once the weight of the strip reaches the specified standard, the cutting device immediately operates to precisely cut the strip above the roller weighing machine 2, thus directly obtaining a strip that meets the specified weight. This process eliminates subsequent secondary weighing, handling, and cutting processes, significantly shortening the production process, greatly improving production efficiency, and greatly reducing the time from extrusion to becoming a qualified finished product.

[0022] In addition, by sequentially setting up the preparatory roller conveyor 1, the roller weighing machine 2, and the unloading roller conveyor 3, and coordinating with the push box device, a continuous production line is formed. While the push box device pushes the preparatory box 5 to the roller weighing machine 2, it also pushes the weighing box 4 containing the weighed and cut rubber strips to the unloading roller conveyor 3, realizing the circulation of the boxes and the continuous operation of rubber strip production, avoiding interruptions and waiting in the production process, and further improving the overall production efficiency.

[0023] In this utility model, the cutting device includes an arched frame 21, a rubber strip guide conveyor 20 is provided on the arched frame 21, a cylinder bracket 22 is provided on the rubber strip guide conveyor 20, a first cylinder 23 is provided on the cylinder bracket 22, the piston rod of the first cylinder 23 is vertically downward and a cutter 24 is installed thereon, and the first cylinder 23 is signal connected to the roller weighing machine 2.

[0024] Specifically, the arched frame 21 of the cutting device spans the two side frames of the roller weighing machine 2, and its top crossbeam is parallel to the roller conveyor line; the rubber strip guide conveyor 20 is horizontally fixed on the arched frame 21, located between the extruder outlet and the weighing box 4, and its platform height is flush with the extruder outlet to ensure that the rubber strip can slide smoothly into the weighing box 4; the cylinder bracket 22 is vertically fixed in the middle of the rubber strip guide conveyor 20, and the first cylinder 23 is vertically installed at the top of the bracket, with the piston rod end fixed to the cutter 24 by bolts, and the blade of the cutter 24 is perpendicular to the rubber strip conveying direction; the roller weighing machine 2 has a built-in weight sensor, and its signal output end is connected to the controller of the first cylinder 23 through a wire. When the weighing value reaches the set threshold, the sensor sends an electrical signal to trigger the first cylinder 23 to act.

[0025] Furthermore, a guide plate 31 slides left and right on the rubber strip guide conveyor table 20. The left and right sliding design of the guide plate 31 allows the device to adapt to rubber strips of different widths and specifications. It can meet the needs of multi-variety production without changing the conveyor table, thus improving the versatility of the equipment.

[0026] See Figure 3 , Figure 4 As shown, an avoidance groove 41 is provided on the adhesive strip guide conveyor 20 and directly below the cutter 24.

[0027] Specifically, the clearance groove 41 is located in the middle of the table surface of the rubber strip guide conveyor 20, directly below the cutter 24. Its length is greater than the blade length of the cutter 24, its width is adapted to the thickness of the cutter 24, and its depth is 5-10mm. When the cutter 24 cuts, it can be completely inserted into the clearance groove 41 to ensure that the rubber strip is completely cut off and to avoid the phenomenon of "severed threads".

[0028] See Figure 1 , Figure 2 As shown, the pusher device includes a support frame 51 located on one side of the roller conveyor line, a linear screw module 52 is provided on the support frame 51, and a push plate 53 is provided on the linear screw module 52 for pushing the pre-pack 5 to move.

[0029] Specifically, the support frame 51 of the pusher device is a portal frame that spans one side of the roller conveyor line, and its bottom is fixed to the ground by expansion bolts; the linear screw module 52 is horizontally installed on the crossbeam of the support frame 51, and the push plate 53 is fixed to the slider of the module by bolts; the linear screw module 52 is driven by a servo motor and is connected to the roller weighing machine 2 by a PLC controller. After weighing is completed, the module drives the push plate 53 to move towards the conveyor line, and after pushing is completed, it resets in the reverse direction.

[0030] The working principle of the push box device is as follows: The linear screw module 52 works, driving the push plate 53 to push the preparatory box 5 to move. Then the preparatory box 5 pushes the weighing box 4 to move, so that the weighing box 4, after weighing the colloid, is transferred to the unloading roller conveyor 3. The preparatory box 5 is located on the roller weighing machine 2 and is used to collect the colloid strips. After that, the push plate 53 is reset, and then a new preparatory box 5 is placed on the preparatory roller conveyor 1 by manual labor.

[0031] Furthermore, the preparatory roller conveyor 1 and the roller weighing machine 2 are arranged horizontally, while the unloading roller conveyor 3 is arranged at a downward inclination. The end of the frame of the unloading roller conveyor 3 away from the roller weighing machine 2 is inclined downward at an angle of 30°-45°, and its roller surface is provided with an anti-slip rubber layer. The rotation direction of the roller is consistent with the conveying direction of the box, and the inclination angle allows the box to slide downward under the combined action of gravity and roller friction. The end of the unloading roller conveyor 3 is provided with a buffer baffle (not shown in the attached figure) to prevent the box from hitting the ground when it slides down.

[0032] See Figure 3 As shown, a second cylinder 71 is provided below the roller conveyor line. The piston rod of the second cylinder 71 is vertically upward and a connecting plate 72 is installed thereon. The connecting plate 72 extends in the front-to-back direction and a first baffle 73 and a second baffle 74 are respectively provided at the front and rear ends. The first baffle 73 can extend above the preparatory roller conveyor 1 to restrict the movement of the preparatory box 5. The second baffle 74 can extend above the roller weighing machine 2 to restrict the movement of the weighing box 4.

[0033] Specifically, the second cylinder 71 is vertically installed on the ground foundation below the roller conveyor line, and its piston rod is bolted to the connecting plate 72. The connecting plate 72 is a long steel plate that extends along the front and rear direction of the roller conveyor line, and its length covers the area below the end of the preparatory roller conveyor 1 and the front end of the roller weighing machine 2. The first baffle 73 and the second baffle 74 are respectively vertically fixed at the front and rear ends of the connecting plate 72, and the height of the baffle is 30-50mm higher than the top surface of the roller. When the piston rod of the second cylinder 71 retracts, the baffle is lower than the top surface of the roller and does not affect the movement of the box. When the piston rod extends, the baffle rises and blocks the forward direction of the preparatory box 5 and the weighing box 4 respectively, thereby achieving positioning. The extension and retraction of the cylinder is controlled by the PLC in conjunction with the box pushing device.

[0034] Based on the accompanying drawings and the foregoing display and description of the basic principles, main features, and advantages of this utility model, those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic weighing and cutting device for adhesive strips, characterized in that: The system includes a roller conveyor line, a cutting device, and a pusher device. The roller conveyor line includes a preparatory roller conveyor (1), a roller weighing machine (2), and a discharge roller conveyor (3) arranged in sequence. The roller weighing machine (2) is equipped with a weighing box (4) for holding the extruded rubber strips. The preparatory roller conveyor (1) is equipped with a preparatory box (5). The cutting device is located above the roller weighing machine (2) and is used to cut the extruded rubber strips. The pusher device is used to push the preparatory box (5) onto the roller weighing machine (2) and simultaneously push the weighing box (4) onto the discharge roller conveyor (3).

2. The automatic weighing and cutting device for adhesive strips according to claim 1, characterized in that: The cutting device includes an arched frame (21), on which a rubber strip guide conveyor (20) is provided, on which a cylinder bracket (22) is provided, on which a first cylinder (23) is provided, the piston rod of the first cylinder (23) is vertically downward and a cutter (24) is installed, and the first cylinder (23) is signal connected to the roller weighing machine (2).

3. The automatic weighing and cutting device for adhesive strips according to claim 2, characterized in that: A guide plate (31) slides left and right on the rubber strip guide conveyor table (20).

4. The automatic weighing and cutting device for adhesive strips according to claim 2, characterized in that: An avoidance groove (41) is provided on the rubber strip guide conveyor (20) and directly below the cutter (24).

5. The automatic weighing and cutting device for adhesive strips according to claim 1, characterized in that: The pusher device includes a support frame (51) located on one side of the roller conveyor line. A linear screw module (52) is provided on the support frame (51), and a push plate (53) for pushing the pre-pack (5) to move is provided on the linear screw module (52).

6. The automatic weighing and cutting device for adhesive strips according to claim 5, characterized in that: The preparatory roller conveyor (1) and the roller weighing machine (2) are set horizontally, while the unloading roller conveyor (3) is set downwards at an angle.

7. The automatic weighing and cutting device for adhesive strips according to claim 1, characterized in that: A second cylinder (71) is provided below the roller conveyor line. The piston rod of the second cylinder (71) is set vertically upward and a connecting plate (72) is installed. The connecting plate (72) extends in the front-back direction and a first baffle (73) and a second baffle (74) are respectively provided at the front and rear ends. The first baffle (73) can extend above the preparatory roller conveyor (1) to restrict the movement of the preparatory box (5). The second baffle (74) can extend above the roller weighing machine (2) to restrict the movement of the weighing box (4).

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