An automatic tension storage device

Abstract

This utility model discloses an automatic tension-driven storage tube device, including a storage tube frame assembly, a lower tension assembly, an upper tension assembly, and a rodless cylinder assembly. The rodless cylinder assembly is electrically connected to the electrical control system of the finished product tube collection device. The lower tension assembly is fixed to the lower left side of the storage tube frame assembly. The upper tension assembly is slidably connected to the storage tube frame assembly. A storage tube sprocket assembly is hinged to the upper end of the storage tube frame assembly. A laser rangefinder is also provided at the upper end of the storage tube frame assembly. A counterweight assembly is slidably connected to the right side of the storage tube frame assembly. A chain connects the counterweight assembly and the upper tension assembly, and the chain meshes with the storage tube sprocket assembly. The rodless cylinder assembly is mounted on the storage tube frame assembly and includes a cylinder body and a cylinder sliding block. The side of the cylinder sliding block has a locking component that can cooperate and abut against the upper tension assembly or the counterweight assembly. This structure can achieve stable tension for finished product collection, resulting in tight and uniform collection of finished product tubes.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic pipe equipment, specifically an automatic tension storage device. Background Technology

[0002] With rapid economic development, the application of new plastic pipes in construction and other fields has been increasing year by year, and the number of companies producing plastic pipes is also growing. Pipe production lines are generally equipped with a constant-speed pipe feeding (or pulling) device and a finished pipe collection device. Existing finished pipe collection devices use a stacked arrangement of finished pipes. During this stacking, the linear velocity of the inner and outer layers of pipes differs, creating a dynamic difference. In contrast, the constant-speed pipe feeding device operates at a fixed speed based on the production line speed. Because one is dynamic and the other is fixed, during the process of transporting pipes to the finished pipe collection device using the constant-speed feeding device, the pipes are easily stretched or flattened by excessive pulling force, or insufficient pulling force leads to loose collection and uneven arrangement of the finished pipes. Therefore, it is crucial to establish a device between the constant-speed pipe feeding or pulling device and the finished pipe collection device to address these issues. Utility Model Content

[0003] The purpose of this utility model is to provide an automatic tension storage device to solve the problems mentioned in the background art, where existing constant-speed pipe feeding devices, when transporting pipes to finished pipe collection devices for finished pipe collection, are prone to stretching or flattening due to excessive tension from the finished pipe collection device, or the finished pipes are not collected tightly and are unevenly arranged due to insufficient tension from the finished pipe collection device.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic tensioning storage pipe device, comprising a storage pipe frame assembly, a lower tensioning assembly, an upper tensioning assembly, and a rodless cylinder assembly. Both the lower and upper tensioning assemblies are used to tension the plastic pipe being transported. The rodless cylinder assembly is electrically connected to the electrical control system of a finished pipe collection device. The lower and upper tensioning assemblies have identical structures and are arranged in a mirror image. The lower tensioning assembly is fixed to the lower left side of the storage pipe frame assembly, and the upper tensioning assembly is longitudinally slidably connected to the storage pipe frame assembly. A storage pipe sprocket assembly is hinged to the upper end of the storage pipe frame assembly. A laser rangefinder electrically connected to the electrical control system of the finished product pipe collection device is also provided. The laser rangefinder is used to detect the moving distance of the upper tension component. A counterweight component is longitudinally slidably connected to the right side of the storage pipe frame assembly. A chain is connected between the counterweight component and the upper tension component, and the chain meshes with the upper storage pipe sprocket assembly. The rodless cylinder assembly is installed on the storage pipe frame assembly and located between the upper tension component and the counterweight component. The rodless cylinder assembly includes a cylinder body and a cylinder sliding block disposed on the cylinder body and moving up and down with the operation of the cylinder body. A locking component is provided on the side of the cylinder sliding block, which can cooperate and abut against the upper tension component or the counterweight component.

[0005] Preferably, for ease of operation, the locking assembly includes a pin seat, a pin, and a spring pin. The pin seat is disposed on the cylinder sliding block, and a pin that can slide freely back and forth is disposed in the pin seat. A spring pin that is partially inserted into the pin seat and used to limit the pin is disposed at the bottom of the pin seat.

[0006] As a preferred option, to simplify the structure and improve the tension of the pipe, the lower tensioning assembly includes a lower tensioning plate, a lower tensioning fixing plate, and N sets of U-shaped rollers, where N is an odd number. The two ends of the N sets of U-shaped rollers are respectively connected between the lower tensioning plate and the lower tensioning fixing plate. The lower tensioning fixing plate is provided with two spaced-apart anti-collision rubber blocks. The outer side of the lower tensioning fixing plate is connected to the pipe storage frame assembly.

[0007] As a preferred option, to simplify the structure and improve the tension of the pipes, the upper tensioning component includes a tensioning plate, a tensioning fixing plate, and N sets of U-shaped rollers, where N is an odd number. The two ends of the N sets of U-shaped rollers are respectively connected between the tensioning plate and the tensioning fixing plate. A second anti-collision rubber block is provided below the tensioning fixing plate, and the lower part of the anti-collision rubber block abuts against the moving pin. The outer side of the tensioning fixing plate is slidably connected to the pipe storage rack assembly. The outer side of the tensioning fixing plate is also provided with a ranging reflector plate that cooperates with the laser rangefinder and a chain mounting hole that cooperates with one end of the chain.

[0008] Preferably, for ease of operation, the counterweight assembly includes a counterweight mounting base and a counterweight. The upper end of the counterweight mounting base is threaded with a lead screw, and the counterweight is slidably sleeved on the lead screw. A chain mounting hole is provided on the side of the counterweight mounting base, and an anti-collision rubber block is provided at the bottom of the counterweight mounting base. The anti-collision rubber block abuts against the moving pin. The central through hole of the counterweight needs to be larger than the lead screw, and the side of the counterweight mounting base is slidably connected to the storage rack assembly.

[0009] Preferably, to simplify the overall structure and facilitate installation, the storage rack assembly includes a steel frame and linear guide rails. The linear guide rails are mounted on the steel frame, and columns are installed on the steel frame. The linear guide rails are symmetrically installed on both sides of the columns. A through hole with a diameter of D is opened at the top of each column. Cylinder connecting mounting plates are welded to the top and bottom of each column. Mounting holes are provided on the cylinder connecting mounting plates. Cylinder fixing lugs are installed at both ends of the cylinder body. Mounting holes corresponding to mounting holes are provided on the cylinder fixing lugs. Each mounting hole is threadedly connected to a corresponding mounting hole by a screw. Two sliders are provided on the side of the counterweight mounting base, and these two sliders are slidably connected to the linear guide rail on the right end of the column. Four sliders are provided on the outer side of the tensioning fixing plate, and these four sliders are slidably connected to the linear guide rail on the left side of the column.

[0010] Preferably, the storage tank sprocket assembly includes a sprocket and a sprocket shaft. A bearing is provided inside the sprocket, and the bearing is sleeved on the outside of the sprocket shaft. Both ends of the sprocket shaft are fixed to the through holes by screws to install the storage tank sprocket assembly to the inside of the column.

[0011] Preferably, during pipe transport, a front-to-back guiding function can be further achieved. A front guide mounting plate is welded to the front end of the steel frame, and a second mounting hole is opened on the front guide mounting plate. A rear guide mounting plate is welded to the rear end of the steel frame, and a third mounting hole is opened on the rear guide mounting plate. A front guide assembly is provided on the front guide mounting plate, and a rear guide assembly is provided on the rear guide mounting plate. The front guide assembly and the rear guide assembly are symmetrically arranged on the left and right sides of the steel frame. The front guide assembly and the rear guide assembly have the same structure, both including a guide frame. One or more U-shaped guide wheels are rotatably connected to the guide frame. The guide frame is provided with a waist-shaped through hole, and a screw passes through the waist-shaped through hole and is threadedly connected to the corresponding second or third mounting hole.

[0012] Preferably, the structures of the U-shaped roller assembly one and the U-shaped roller assembly two are identical, each including a fixed shaft, a nut, and one or more U-shaped rollers. The U-shaped rollers are rotatably connected to the fixed shaft. A spacer sleeve is provided between each U-shaped roller on the same fixed shaft and is fitted outside the fixed shaft. Each fixed shaft is also fitted with spacer sleeves two outside the two outermost U-shaped rollers at both ends. The fixed shaft passes through the corresponding tensioning plate and tensioning fixing plate and is threadedly connected to the nut.

[0013] Compared with the prior art, the beneficial effects of this utility model are: this structure can achieve the purpose of stable tension in finished product collection, making the finished product tubes tightly collected and evenly arranged. Attached Figure Description

[0014] Figure 1 This is a front structural diagram of an automatic expansion storage device in Embodiment 1. Figure 2 for Figure 1 A cross-sectional view along the AA direction; Figure 3 This is a top view of an automatic expansion storage device in Embodiment 1. Figure 4 This is a front view of the storage tank rack assembly in Example 1; Figure 5 This is a schematic diagram of the right side of the storage tank rack assembly in Example 1; Figure 6 This is a top view of the storage tank rack assembly in Example 1; Figure 7 This is a schematic diagram of the right side of the lower tension component in Example 1; Figure 8 This is a front view of the lower tensioning component in Example 1; Figure 9 This is a perspective view of the lower tension component in Embodiment 1, where no U-shaped rollers are installed on one of the fixed shafts. Figure 10 This is a side view of the lower tension component in Example 1 when it is facing upwards. Figure 11 This is a perspective view of the lower tension component in Example 1; Figure 12 This is a schematic diagram of the counterweight component in Example 1; Figure 13 This is a cross-sectional view of the storage tank sprocket assembly in Example 1; Figure 14 This is a schematic diagram of the front structure of the rear guide assembly in Example 1; Figure 15 This is a schematic diagram of the left side structure of the rear guide assembly in Embodiment 1; Figure 16This is a top view of the rear guide assembly in Embodiment 1; Figure 17 This is a schematic diagram of the front structure of the front guide assembly in Example 1; Figure 18 This is a schematic diagram of the left side structure of the front guide assembly in Embodiment 1; Figure 19 This is a top view of the front guide assembly in Embodiment 1; Figure 20 This is a front view of the rodless cylinder assembly in Example 1. Figure 21 This is a side view of the rodless cylinder assembly in Example 1; Figure 22 The diagram shows the engagement state of the locking component on the rodless cylinder assembly with either the second or third anti-collision rubber block. Figure 23 yes Figure 20 Enlarged view of the lower part of the rodless cylinder assembly.

[0015] In the diagram: Storage rack assembly 1, steel frame 101, linear guide rail 102, column 103, through hole 104, cylinder connection mounting plate 105, mounting hole one 106, front guide mounting plate 107, mounting hole two 108, rear guide mounting plate 109, mounting hole three 110, lower tension assembly 2, lower tension plate 201, lower tension fixing plate 202, U-shaped roller group one 203, anti-collision rubber block one 204, upper tension assembly 3, upper tension plate 301, upper tension fixing plate 302, U-shaped roller group two 303, anti-collision rubber block two 304, distance measuring reflector 306, chain mounting hole one 305, rodless cylinder assembly 4, cylinder body 401, cylinder sliding block 402, locking assembly 403 1. Pin seat 4031, Pin 4032, Spring pin 4033, Cylinder fixing lug seat 4011, Mounting hole four 4012, Screw one 4013, Slider one 4014, Storage tube sprocket assembly 5, Laser rangefinder 6, Counterweight assembly 7, Counterweight block mounting seat 701, Counterweight block 702, Lead screw 703, Chain mounting hole two 704, Anti-collision rubber block three 705, Connecting fixing block 8, Chain 9, Sprocket 501, Sprocket shaft 502, Bearing 503, Screw two 504, Front guide assembly 11, Rear guide assembly 12, Guide frame 13, U-shaped guide wheel two 14, Waist-shaped through hole 15, Screw three 16, Fixed shaft 17, Nut 18, U-shaped roller one 19, Spacer one 20, Spacer two 21. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0017] Example 1 Please see Figures 1-23 As shown, this embodiment discloses an automatic tension storage device, including a storage frame assembly 1, a lower tension assembly 2, an upper tension assembly 3, and a rodless cylinder assembly 4; To simplify the overall structure and facilitate installation, the storage rack assembly 1 includes a steel frame 101 and linear guide rails 102. The linear guide rails 102 are mounted on the steel frame 101, and columns 103 are installed on the steel frame 101. The linear guide rails are symmetrically arranged on both sides of the columns 103. A through hole 104 with a diameter of D is opened at the top of each column 103. Cylinder connecting mounting plates 105 are welded to both the top and bottom of each column 103. Mounting holes 106 are opened on the cylinder connecting mounting plates 105. Cylinder fixing lugs 4011 are installed at both ends of the cylinder body 401. The cylinder fixing lug 4011 is provided with mounting holes 4012 corresponding to mounting holes 106. Each mounting hole 4012 is threadedly connected to the corresponding mounting hole 106 by a screw 4013. The side of the counterweight mounting base 701 is provided with two sliders 4014. The two sliders 4014 are slidably connected to the linear guide rail 102 at the right end of the column 103, and the sliding distance is L4 > L1 + L2 - L3. The outer side of the tensioning fixing plate 302 is provided with four sliders 3021. The four sliders 3021 are slidably connected to the linear guide rail 102 on the left side of the column 103. Both the lower tensioning component 2 and the upper tensioning component 3 are used to tension the plastic pipes being transported. The rodless cylinder assembly 4 is electrically connected to the electrical control system of the finished pipe collection device. The lower tensioning component 2 and the upper tensioning component 3 have identical structures and are arranged in a mirror image. The lower tensioning component 2 is fixed to the lower left side of the storage pipe frame assembly 1, and the upper tensioning component 3 is longitudinally slidably connected to the storage pipe frame assembly 1. A storage pipe sprocket assembly 5 is hinged to the upper end of the storage pipe frame assembly 1, and the upper end of the storage pipe frame assembly 1 is also provided with a component electrically connected to the electrical control system of the finished pipe collection device. A laser rangefinder 6 is used to detect the moving distance of the upper tension component 3. A counterweight component 7 is longitudinally slidably connected to the right side of the storage tube frame assembly 1. A chain 9 is connected between the counterweight component 7 and the upper tension component 3, and the chain 9 meshes with the upper storage tube sprocket assembly 5. The storage tube sprocket assembly 5 includes a sprocket 501 and a sprocket shaft 502. A bearing 503 is provided inside the sprocket 501 and is sleeved on the outside of the sprocket shaft 502. The two ends of the sprocket shaft 502 are fixed to the through holes 104 by screws 504 to install the storage tube sprocket assembly 5 onto the column. Inside 103, the rodless cylinder assembly 4 is installed on the storage tube frame assembly 1 and located between the upper tension assembly 3 and the counterweight assembly 7. The rodless cylinder assembly 4 includes a cylinder body 401 and a cylinder sliding block 402 disposed on the cylinder body 401 and moving up and down with the operation of the cylinder body 401. The side of the cylinder sliding block 402 is provided with a locking assembly 403 that can cooperate and abut against the upper tension assembly 3 or the counterweight assembly 7. For ease of operation, the locking assembly 403 includes a pin seat 4031, a pin 4032, and a spring pin 4033. 4031 is mounted on the cylinder sliding block 402. A through pin 4032, capable of freely sliding back and forth, is provided within the through pin seat 4031. A spring pin 4033, partially inserted into the through pin seat 4031 and used to limit the through pin 4032, is located at the bottom of the through pin seat 4031. Since the weight of the counterweight assembly 7 is much greater than the weight of the upper tension assembly 3 in the initial position, and the upper tension assembly 3 is positioned above the storage tube rack assembly 1, and because the device is relatively high, the upper tension assembly 3 is inaccessible to operators. Therefore, a rodless cylinder assembly 4 is added to this structure. Figure 21As shown, in this embodiment, since the through pin 4032 has a pin hole for the spring pin 4033, and when the spring pin 4033 is inserted into the pin hole, it can limit the through pin 4032 and prevent it from moving. When the spring pin 4033 is pulled down, the through pin 4032 is not restricted. At this time, by pushing the through pin 4032 to the A end position, it abuts against the lower end of the anti-collision rubber block 304 on the upper tension component 3. Then, by releasing the spring pin 4033, the through pin 4032 can be fixed and prevented from sliding. When the cylinder sliding block 402 moves upward with the operation of the cylinder body 401, it can drive the upper tension component 3 to move upward, causing the counterweight component 7 to move downward. When the spring pin 4033 is pulled up, if the through pin 4032 is pushed to the B end position, that is, it abuts against the lower part of the anti-collision rubber block 3 705 on the counterweight component 7, when the cylinder sliding block 402 moves upward, it can drive the counterweight component 7 to move upward, causing the upper tension component 3 to move downward, further facilitating user operation by winding the pipe around the upper tension component 3.

[0018] Preferably, to simplify the structure and improve pipe tensioning, the lower tensioning component 2 includes a lower tensioning plate 201, a lower tensioning fixing plate 202, and N sets of U-shaped rollers 203, where N is an odd number and cannot be even. The two ends of the N sets of U-shaped rollers 203 are respectively connected between the lower tensioning plate 201 and the lower tensioning fixing plate 202. The lower tensioning fixing plate 202 has two spaced-apart anti-collision rubber blocks 204. The outer side of the lower tensioning fixing plate 202 is connected to the pipe storage rack assembly 1, and the outer side of the lower tensioning fixing plate 202 is connected to the steel frame 101 by four connecting fixing blocks 8 and screws. This simplifies the structure and improves pipe tensioning. The upper tensioning component... Component 3 includes a tensioning plate 301, a tensioning fixing plate 302, and N sets of U-shaped rollers 303, where N is an odd number. The two ends of the N sets of U-shaped rollers 303 are respectively connected between the tensioning plate 301 and the tensioning fixing plate 302. A second anti-collision rubber block 304 is provided below the tensioning fixing plate 302, and the lower part of the anti-collision rubber block 304 abuts against the moving through pin 4032. The outer side of the tensioning fixing plate 302 is slidably connected to the storage rack assembly 1. The outer side of the tensioning fixing plate 302 also has a ranging reflector plate 306 that cooperates with the laser rangefinder 6 and a chain mounting hole 305 that cooperates with one end of the chain 9. In this embodiment, as shown... Figure 1 , Figure 2As shown, the sliding distance of the upper tension component 3 on the storage rack assembly 1 is L2 + L3 - L4, where L is the mechanical limit distance of the upper tension component 3 at the lower part of the storage rack assembly 1, L2 is the tension setting distance, L4 is the mechanical limit distance of the counterweight component 7 at the upper part of the storage rack assembly 1, and L3 is the measured distance. For ease of operation, the counterweight component 7 includes a counterweight mounting base 701 and a counterweight 702. The upper end of the counterweight mounting base 701 is threaded with a lead screw 703, and the counterweight 702 is slidably sleeved on the lead screw 703. The side of the counterweight mounting base 701 is provided with a chain mounting hole 704, and the bottom of the counterweight mounting base 701 is provided with an anti-collision rubber block 705. The anti-collision rubber block 705 abuts against the moving through pin 4032. The center through hole of the counterweight 702 is... The counterweight needs to be larger than the lead screw 703, and the side of the counterweight mounting base 701 is slidably connected to the storage tube frame assembly 1. The length of the lead screw 703 is much greater than the thickness of the counterweight 702, and the counterweight weight can be adjusted by adding or removing the counterweight 702. In this embodiment, the structure of the U-shaped roller group 1 203 and the U-shaped roller group 2 303 is the same, both including a fixed shaft 17, a nut 18 and one or more U-shaped rollers 19. The U-shaped rollers 19 are rotatably connected to the fixed shaft 17. A spacer 20 is provided between each U-shaped roller 19 on the same fixed shaft 17 and is sleeved outside the fixed shaft 17. Each fixed shaft 17 is also sleeved at both ends with a spacer 21 located outside the two outermost U-shaped rollers 19. The fixed shaft 17 passes through the corresponding tension plate and tension fixing plate and is threadedly connected to the nut 18.

[0019] Preferably, during pipe transport, a front-to-back guiding function can be further achieved. A front guide mounting plate 107 is welded to the front end of the steel frame 101, and a second mounting hole 108 is opened on the front guide mounting plate 107. A rear guide mounting plate 109 is welded to the rear end of the steel frame 101, and a third mounting hole 110 is opened on the rear guide mounting plate 109. A front guide assembly 11 is provided on the front guide mounting plate 107, and a rear guide assembly 12 is provided on the rear guide mounting plate 109. The front guide assembly 11 and the rear guide assembly 12 are symmetrically arranged on the left and right sides of the steel frame 101. The front guide assembly 11 and the rear guide assembly 12 have the same structure, both including a guide frame 13. One or more U-shaped guide wheels 14 are rotatably connected to the guide frame 13. A waist-shaped through hole 15 is provided on the guide frame 13. A third screw 16 passes through the waist-shaped through hole 15 and is threadedly connected to the corresponding second mounting hole 108 or third mounting hole 110.

[0020] In use, the laser rangefinder 6 on this device is wired to the electrical control system of the finished product pipe collection device. The cylinder body 401 on this device is connected to a solenoid valve via an air pipe, and the solenoid valve's air inlet is connected to an external air supply. Simultaneously, the solenoid valve's wire is connected to the electrical control system of the finished product pipe collection device. This device requires the use of both a finished product pipe collection device and a constant-speed pipe feeding device. During use, the plastic pipe fed from the constant-speed pipe feeding device enters from the front end of this device (e.g., ...). Figure 1 The front end (as shown in the left-hand label) first passes through each of the U-shaped guide wheels 14 on the front guide assembly 11 and then winds downwards into the inner side of the lower tension assembly 2 (as shown in the left-hand label). Figure 3 As shown), the plastic tube passes sequentially through each U-shaped roller 19 on the lower tension assembly 2 from the inside, then winds upwards from the inside of the lower tension assembly 2 to the upper tension assembly 3, and finally exits from the lower outer side of the lower tension assembly 2. After passing through each U-shaped guide roller 14 of the rear guide assembly 12, it enters the finished product tube collection device. Because the weight of the counterweight assembly 7 is greater than the weight of the upper tension assembly 3 before the plastic tube winds into this device, and the upper tension assembly 3 is located at the top of this device, it is inconvenient for the plastic tube to wind into this device due to the height of this device. Therefore, a rodless cylinder assembly 4 is added, and the cylinder body is controlled by the finished product tube collection device's electrical control system. When the solenoid valve on the air pipe connection end 401 is activated, compressed air enters the lower end of the cylinder body 401 through the air pipe, causing the cylinder sliding block 402 to move upward, driving the counterweight assembly 7 to move upward, and causing the upper tension assembly 3 to move downward to the lower part of the device, thus facilitating the plastic tube to be wound into the device. The upper tension assembly 3 is kept in the lower position of the device until the plastic tube enters the finished product tube collection device, and the finished product tube collection device is started. Then, the electronic control system of the finished product tube collection device controls the solenoid valve of the cylinder body 401 to reverse, so that compressed air enters the upper end of the cylinder body 401 through the air pipe, causing the cylinder sliding block 402 to move downward to the stop position. Due to gravity, after the cylinder sliding block 402 moves downward to the stop position, the counterweight component 7 moves downward, pulling the upper tension component 3 upward. At this time, the laser rangefinder 6 feeds back the distance signal to the finished product tube collection device's electrical control system. The finished product tube collection device's electrical control system controls the speed of the motor on the finished product tube collection device according to the set tension distance L1, so that the finished product collection is accelerated or decelerated, thereby achieving the purpose of controlling the stable tension of the finished product collection, making the finished product tubes tightly collected and evenly arranged. It should be noted that how the electrical control system of the finished product tube collection device is connected to the solenoid valve on the cylinder body 401 air pipe and how it is connected to the laser rangefinder 6 to achieve automated control are conventional technologies in this field and will not be described in detail.

[0021] Additionally, the finished product tube collecting device requires a certain interval between completing one collection and starting the next. During this time, the plastic tube linear speed at the rear end of the device is 0, while the constant-speed tube feeding device at the front end continues to feed the tube. Because the weight of the counterweight component 7 is greater than that of the upper tension component 3, the counterweight component 7 moves downwards, and the upper tension component 3 moves upwards, generating a moving distance L2. This keeps the plastic tube fed by the constant-speed tube feeding device within the distance L2 until finished product collection begins. Then, the laser rangefinder 6 feeds back the distance signal to the finished product tube collecting device's electrical control system. The finished product tube collecting device's electrical control system controls the motor speed on the finished product tube collecting device according to the set tension distance L1, making the finished product collection faster. The collection linear speed is greater than the tube feeding linear speed of the constant-speed tube feeding device, thereby forcing the upper tension component 3 to move downwards to the set distance L1, thus achieving fully automatic production of plastic tubes.

[0022] In summary, this structure is installed between the constant-speed pipe feeding or pulling device and the finished pipe collection device on the pipe production line. This structure solves the problem of a time gap between the completion of one finished pipe collection cycle and the start of the next during continuous pipe production. During this gap, the constant-speed pipe feeding device cannot stop and continues feeding pipes, causing pipes to accumulate between the finished pipe collection device and the constant-speed pipe feeding device. Excessive accumulation of pipes leads to poor quality on the pipe surface or the pipes themselves. Furthermore, the pipes are easily stretched or flattened due to excessive pulling force from the finished pipe collection device, or the finished pipes are not tightly collected and are unevenly arranged due to insufficient pulling force.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic tension storage device, characterized in that: The device includes a storage tube rack assembly (1), a lower tension assembly (2), an upper tension assembly (3), and a rodless cylinder assembly (4). The lower tension assembly (2) and the upper tension assembly (3) are used to tension the plastic pipes being transported. The rodless cylinder assembly (4) is electrically connected to the electrical control system of the finished pipe collection device. The lower tension assembly (2) and the upper tension assembly (3) have the same structure and are arranged in a mirror image. The lower tension assembly (2) is fixed to the lower left side of the storage tube rack assembly (1), and the upper tension assembly (3) is longitudinally slidably connected to the storage tube rack assembly (1). A storage tube sprocket assembly (5) is hinged to the upper end of the storage tube rack assembly (1). A laser rangefinder (6) electrically connected to the electrical control system of the finished pipe collection device is also provided at the upper end of the storage tube rack assembly (1). A laser rangefinder (6) is used to detect the moving distance of the upper tension component (3). A counterweight component (7) is longitudinally slidably connected to the right side of the storage rack component (1). A chain (9) is connected between the counterweight component (7) and the upper tension component (3), and the chain (9) meshes with the upper storage sprocket component (5). The rodless cylinder component (4) is installed on the storage rack component (1) and located between the upper tension component (3) and the counterweight component (7). The rodless cylinder component (4) includes a cylinder body (401) and a cylinder sliding block (402) disposed on the cylinder body (401) and moving up and down with the operation of the cylinder body (401). The side of the cylinder sliding block (402) is provided with a locking component (403) that can cooperate and abut against the upper tension component (3) or the counterweight component (7).

2. The automatic expansion storage device according to claim 1, characterized in that: The locking assembly (403) includes a pin seat (4031), a pin (4032), and a spring pin (4033). The pin seat (4031) is disposed on the cylinder sliding block (402). The pin (4032) is disposed in the pin seat (4031) and can slide freely back and forth. The bottom of the pin seat (4031) is provided with a spring pin (4033) that is partially inserted into the pin seat (4031) and used to limit the pin (4032).

3. The automatic tension storage device according to claim 2, characterized in that: The lower tensioning assembly (2) includes a lower tensioning plate (201), a lower tensioning fixing plate (202), and N sets of U-shaped rollers (203), where N is an odd number. The two ends of the N sets of U-shaped rollers (203) are respectively connected between the lower tensioning plate (201) and the lower tensioning fixing plate (202). The lower tensioning fixing plate (202) is provided with two spaced anti-collision rubber blocks (204). The outer side of the lower tensioning fixing plate (202) is connected to the storage rack assembly (1).

4. The automatic tension storage device according to claim 3, characterized in that: The upper tensioning component (3) includes a tensioning plate (301), a tensioning fixing plate (302), and N sets of U-shaped rollers (303), where N is an odd number. The two ends of the N sets of U-shaped rollers (303) are respectively connected between the tensioning plate (301) and the tensioning fixing plate (302). A second anti-collision rubber block (304) is provided below the tensioning fixing plate (302). The lower part of the anti-collision rubber block (304) abuts against the moving pin (4032). The outer side of the tensioning fixing plate (302) is slidably connected to the storage rack assembly (1). The outer side of the tensioning fixing plate (302) is also provided with a ranging reflector plate (306) that cooperates with the laser rangefinder (6) and a chain mounting hole (305) that cooperates with one end of the chain (9).

5. An automatic tension storage device according to claim 4, characterized in that: The counterweight assembly (7) includes a counterweight mounting base (701) and a counterweight (702). The upper end of the counterweight mounting base (701) is threaded with a lead screw (703). The counterweight (702) is slidably sleeved on the lead screw (703). The side of the counterweight mounting base (701) is provided with a chain mounting hole (704). The bottom of the counterweight mounting base (701) is provided with a third anti-collision rubber block (705). The third anti-collision rubber block (705) abuts against the moving through pin (4032). The central through hole of the counterweight (702) needs to be larger than the lead screw (703). The side of the counterweight mounting base (701) is slidably connected to the storage rack assembly (1).

6. An automatic tension storage device according to claim 5, characterized in that: The storage rack assembly (1) includes a steel frame (101) and linear guide rails (102). The linear guide rails (102) are mounted on the steel frame (101), and columns (103) are provided on the steel frame (101). The linear guide rails are arranged on both sides of the columns (103) and installed symmetrically. A through hole (104) with a diameter of D is opened at the top of the column (103). A cylinder connecting mounting plate (105) is welded to the top and bottom of the column (103). A mounting hole (106) is opened on the cylinder connecting mounting plate (105). Cylinder fixing lugs (4011) are installed at both ends of the cylinder body (401). The cylinder fixing lug (4011) is provided with mounting holes four (4012) corresponding to mounting hole one (106). Each mounting hole four (4012) is threadedly connected to a corresponding mounting hole one (106) by a screw one (4013). The side of the counterweight mounting base (701) is provided with two slider one (4014). The two slider one (4014) are slidably connected to the linear guide rail (102) at the right end of the column (103). The outer side of the tensioning fixing plate (302) is provided with four slider two (3021). The four slider two (3021) are slidably connected to the linear guide rail (102) on the left side of the column (103).

7. An automatic tension storage device according to claim 6, characterized in that: The storage sprocket assembly (5) includes a sprocket (501) and a sprocket shaft (502). A bearing (503) is provided inside the sprocket (501). The bearing (503) is sleeved on the outside of the sprocket shaft (502). Both ends of the sprocket shaft (502) are fixed to the through hole (104) by screws (504) to realize the installation of the storage sprocket assembly (5) onto the inside of the column (103).

8. An automatic tension storage device according to claim 7, characterized in that: A front guide mounting plate (107) is welded to the front end of the steel frame (101), and a second mounting hole (108) is opened on the front guide mounting plate (107). A rear guide mounting plate (109) is welded to the rear end of the steel frame (101), and a third mounting hole (110) is opened on the rear guide mounting plate (109). A front guide assembly (11) is provided on the front guide mounting plate (107), and a rear guide assembly (12) is provided on the rear guide mounting plate (109). The front guide assembly (11) and the rear guide assembly (12) are symmetrically arranged on the left and right sides of the steel frame (101). The front guide assembly (11) and the rear guide assembly (12) have the same structure, both including a guide frame (13). One or more U-shaped guide wheels (14) are rotatably connected to the guide frame (13). The guide frame (13) is provided with a waist-shaped through hole (15). A screw (16) passes through the waist-shaped through hole (15) and is threadedly connected to the corresponding mounting hole (108) or mounting hole (110).

9. An automatic tension storage device according to claim 4, characterized in that: The structures of the U-shaped roller group one (203) and the U-shaped roller group two (303) are the same, each including a fixed shaft (17), a nut (18) and one or more U-shaped rollers (19). The U-shaped rollers (19) are rotatably connected to the fixed shaft (17). Between each U-shaped roller (19) on the same fixed shaft (17), there is a spacer (20) sleeved outside the fixed shaft (17). Each fixed shaft (17) is also sleeved at both ends with spacers (21) located outside the two outermost U-shaped rollers (19). The fixed shaft (17) passes through the corresponding tensioning plate and tensioning fixing plate and is threadedly connected to the nut (18).

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