Stacking device for coil materials and discharging system

Abstract

The invention relates to the technical field of pipe production, in particular to a coil material stacking device which comprises a lifting table used for supporting coil materials and further comprises an upper embracing mechanism and a side pulling mechanism which are located above the lifting table and arranged from top to bottom, the upper embracing mechanism comprises at least two upper embracing rings, all the upper embracing rings are evenly distributed in the circumferential direction, and the side pulling mechanism is arranged between the upper embracing rings and the lifting table. All the upper embracing rings can get away from or get close to each other under the corresponding drivers, and the upper embracing rings are used for embracing coiled materials; the side pulling mechanism comprises at least two supporting plates which can be far away from or close to each other, all the supporting plates are evenly distributed in the circumferential direction, and a falling space for the lifting tray exists between the supporting plates. The discharging system comprises the stacking device for the coil materials and further comprises an inner lifting appliance used for lifting the coil materials to the supporting plate. According to the scheme, the problem that in the prior art, coil materials are prone to inclining during stacking is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe production, and particularly relates to a stacking device and a blanking system for coiled materials. Background Art

[0002] For some metal pipes, they need to be sent into an annealing furnace for annealing to eliminate internal metal stress. To achieve high production efficiency for packaging metal pipe annealing, the metal pipes are often wound into coils to form coiled materials and then sent into the annealing furnace. After annealing, the coiled materials are stacked layer by layer and then wound and packaged.

[0003] However, in the process of taking into account transportation, in order to ensure that the annealed coiled materials do not come apart, the coiled materials are tied with copper strips before annealing to prevent the coiled materials from coming apart during transportation, and it is convenient to lift the coiled materials by expanding from the inner hole of the coiled materials during transportation (such lifting equipment is, for example, the grasping tooling in the patent publication number CN221397962U). However, in this way, the copper strips tied to the coiled materials will also be packaged, which increases the cost of the product. To reduce costs, in existing production, the annealed coiled materials are transferred to a wooden pallet, and then the copper strips are cut by manual labor and recycled. Such a process involves the processes of tying and cutting the copper strips, increasing the labor cost.

[0004] To solve the above problems, there is also proposed a lifting device for multi-layer spiral coiled pipes with the patent publication number CN221521792U. This lifting method is realized in cooperation with a metal pallet under the coiled material. During the transfer process of the coiled material, the pallet is lifted by a pallet lifting tool, thereby lifting the coiled material. During the transfer process, the lifting tool can not contact the coiled material, so that the coiled material can be transferred even without being tied with copper strips. However, this method has a problem that the metal pallet needs to be sent to downstream merchants together with the product after annealing, and after the downstream merchants use it up, the pallet needs to be transported back for reuse. Such a turnover method requires a large number of metal pallets and also incurs costs for sending them back again.

[0005] Therefore, the prior art has also proposed a hard-state extra-large coil production and transfer device and its operation method with the patent publication number CN114455480A. In this technology, it is proposed to first use an inner lifting tool to transfer the annealed coiled material together with the metal pallet to a soft coil pallet (the metal pallet for supporting the metal material can also be called a lifting pallet or a lifting tray), and then use an outer lifting tool to directly lift the metal pipe from the bottom of the coiled material by extending a long tongue plate and transfer it to a wooden pallet. This method neither requires tying the coiled material before annealing nor requires sending the lifting tray together with the coiled material to downstream manufacturers. However, this method also has problems:

[0006] First, for the metal coil stock, it is heavy itself. Taking copper tubes as an example, the annealed copper tube coil stock weighs about 300 kg, 400 kg or even 500 kg. During the process of the long tongue plate of the external lifting tool being withdrawn from the bottom of the coil stock, the coil stock loses force successively from the inside out. Under the action of gravity, the metal pipes at the bottom are under greater pressure as they are detached from the support later, which easily causes deformation and wear of the metal pipes at the bottom.

[0007] Second, due to the large number of long tongue plates, it is difficult to ensure that the extraction speeds are exactly the same. In the case where the coil stock is not tied with copper strips, it is extremely easy to tilt at an angle. Therefore, this technology is only suitable for stacks with a relatively low height. Once the stack height is higher, there is a risk of tipping, increasing the safety hazard. Summary of the Invention

[0008] The present invention aims to provide a stacking device for coil stock to solve the problem of easy tilting of coil stock during stacking in the prior art.

[0009] To achieve the above object, the present invention adopts the following technical solutions:

[0010] A stacking device for coil stock includes a lifting table for supporting the coil stock, and further includes an upper embracing mechanism and a side extraction mechanism arranged above the lifting table from top to bottom. The upper embracing mechanism includes at least two upper embracing rings, and all the upper embracing rings are circumferentially and evenly distributed. All the upper embracing rings can move away from or close to each other under the corresponding driver, and the upper embracing rings are used to hold the coil stock. The side extraction mechanism includes at least two support plates that can move away from or close to each other, and all the support plates are circumferentially and evenly distributed. There is a falling space for the lifting tray between the support plates.

[0011] The principle and advantages of this solution are as follows: When adopting this solution, first, the coil stock without being tied with metal strips is placed on the support plates where the side extraction mechanism has closed in by using the method of the internal lifting tool to lift the lifting tray at the bottom of the coil stock, and the support plates after approaching each other support the coil stock, while the original lifting tray supporting the bottom of the coil stock falls in the falling space between the support plates, and the fallen lifting tray is taken away; second, then control the lifting table to rise to the receiving plane (if it is the placement of the bottom layer of coil stock, this receiving plane is the top surface of the wooden tray for receiving, otherwise it is the top surface of the spacer), close to / against the bottom surface of the support plate; third, then control the upper embracing rings to hold the coil stock; fourth, finally control the side extraction mechanism to make the support plates move away from each other. After the support plates move away, the coil stock loses support and falls; fifth, after the falling is completed, all the embracing rings of the upper embracing mechanism move away from each other.

[0012] In this solution, during the falling process, the upper hugging mechanism still holds the coiled material. Since the outer diameters of the coils are basically the same, during the falling process when the support plate no longer supports the coiled material, the upper hugging ring forms a certain support and circumferential limitation for the coiled material, which can not only prevent the coiled material from tilting after falling, but also form a certain lifting force for the coiled material during the withdrawal process of the support plate of the side extraction mechanism, thereby reducing the friction and mutual extrusion force between the support plate and the bottom pipe during the extraction process. This can not only reduce or even avoid the problem of the bottom pipe of the coiled material being pressed and deformed, but also reduce or even avoid the problem of serious wear of the pipe caused by excessive friction between the bottom pipe and the support plate.

[0013] In addition, during the process of the coiled material falling onto the spacer pad / wood pallet, since the upper hugging ring clamps and holds multiple layers of coiled pipes at a certain height at the bottom of the coiled material, it can avoid the problem of the coiled material being scattered due to sudden falling under gravity, and can also avoid the problem of the coiled material being scattered. When there are differences in the positions where the lifting appliance hoists and places the coiled material, the mutual approach of the upper hugging rings can be used to correct the position of the coiled material to ensure the stability after stacking.

[0014] In addition, the setting of the lifting platform in this solution enables the coiled material to be lowered to a position convenient for placing the next coiled material after being placed, thus facilitating the automation of stacking.

[0015] In addition, when this solution is adopted, since the support plate of the side extraction mechanism only needs to leave space for the lifting tray, the support plate can be designed larger, thereby achieving a large-area support of the support plate for the bottom of the coiled material, reducing or even avoiding the problem of the bottom coiled material being pressed and deformed due to a small bearing area, and also helping to extend the service life of the support plate when the size of the support plate is larger.

[0016] Preferably, as an improvement, it further includes a lower hugging mechanism located below the support plate. The lower hugging mechanism includes at least two lower hugging rings, all of which are circumferentially and evenly distributed, and all lower hugging rings can move away from or approach each other under the corresponding driver. The lower hugging rings are used to hold the spacer pad or wood pallet used for stacking.

[0017] This solution realizes the anti-tipping / anti-tilting setting during the stacking process, ensures that higher stacking can be achieved, and during the free falling process of the coiled material, since the lower hugging mechanism holds the spacer pad, no matter whether the spacer pad is made of corrugated cardboard, metal plate, wood board or plastic plate, it can ensure that both the coiled material and the spacer pad after each layer of stacking are consistent up and down, further improving the stacking quality.

[0018] Preferably, as an improvement, the side extraction mechanism further includes a support sliding seat and a side extraction driving machine. The support plate is fixed on the corresponding support sliding seat. The side extraction driving machine is used to drive the support sliding seat to slide so as to realize the mutual separation or approach between the support plates. The lower hugging mechanism is installed at the bottom of the support sliding seat.

[0019] Beneficial effects: In this solution, the lower hugging ring is arranged at the bottom of the side extraction mechanism, which is equivalent to providing a counterweight for the side extraction mechanism, helping to ensure the stability of the side extraction mechanism during operation.

[0020] Preferably, as an improvement, both the upper hugging ring and the lower hugging ring further include a hugging driving machine and a sliding seat. Each hugging ring is fixed on the corresponding sliding seat. The hugging driving machine is used to drive the sliding seat to move so as to realize the mutual separation or approach between the hugging rings. The sliding seat of the upper hugging mechanism is slidably connected to the frame, and the sliding seat of the lower hugging mechanism is slidably connected to the bottom of the corresponding support sliding seat.

[0021] Beneficial effects: The setting of the sliding seat not only provides strong support for the hugging ring to ensure the hugging strength of the hugging mechanism, but also uses the sliding seat on the lower hugging mechanism to provide a counterweight for the side extraction mechanism, ensuring the stability and safety of the side extraction mechanism during operation.

[0022] Preferably, as an improvement, a metal frame is fixed on the support sliding seat. The metal frame is fixedly connected by multiple steel pipes perpendicular to each other. The area of the metal frame facing the opposite support plate is U-shaped. It further includes a U-shaped bottom plate arranged at the bottom of the metal frame. The U-shaped structure of the U-shaped bottom plate aligns with the U-shaped structure of the metal frame. The support plate is fixedly clamped between the U-shaped bottom plate and the U-shaped structure of the metal frame, so that the connection area between the support plate and the U-shaped bottom plate and the metal frame is U-shaped, which helps the support plate to be stressed more evenly, thereby improving the support strength of the support plate and extending the service life of the support plate.

[0023] Preferably, as an improvement, the sliding seat of the lower hugging mechanism is slidably connected to the side of the metal frame away from the U-shaped structure, and the lower hugging ring can extend below the U-shaped structure of the metal frame.

[0024] Preferably, as an improvement, the lower hugging ring is in contact with the bottom surface of the support plate, and the distance between the upper hugging ring and the support plate is less than the radius of the pipe of the coil stock, so that the distance between the spacer pad or wooden pallet below that is ready to support the coil stock and the top surface of the support plate is very small, greatly reducing the falling height of the coil stock after losing the support of the support plate, thereby further avoiding the tilting of the coil stock; and the upper hugging ring is very close to the support plate and can be designed to be close to the upper surface of the support plate in actual use. Thus, when the upper hugging mechanism hugs the coiled stock, the multi-layer pipes at the bottom section of the coiled stock are all clamped and lifted, further reducing the probability of damage or wear of the pipes at the bottom of the coiled stock, and also avoiding the problem that the pipes at the bottom of the coiled stock will deflect the metal pipes when the support plate is withdrawn outward.

[0025] Preferably, as an improvement, the height of the upper hugging ring hugging the coiled material is not less than one-fourth of the height of the coiled material, so that the upper hugging ring has a sufficiently large contact area with the coiled material, thereby ensuring that the clamping force can meet the requirements.

[0026] Preferably, as an improvement, the support plate includes a metal base and a plastic plate placed on the metal base, and the plastic plate is used to directly contact the coiled material.

[0027] Beneficial effects: The support strength of the support plate is ensured by the metal base. The smooth plastic plate reduces the friction with the pipe at the bottom of the coiled material on the one hand, and on the other hand, it is also convenient to replace after wear, reducing the replacement cost.

[0028] Preferably, as an improvement, an arc transition surface is provided at the side edge of the plastic plate facing the center of the coiled material, and the arc transition surface bends downward, so that the edge of the support plate will not cause indentations on the bottom of the coiled material. At the same time, it is also convenient for the support plate to gradually disengage from the support of the coiled material after the side-drawing mechanism controls the support plates to move away from each other, further reducing or even avoiding indentations on the bottom of the coiled material during the process of the support plate being pulled outwards.

[0029] Preferably, as an improvement, an elastic pad is fixed on the hugging surface of the upper hugging ring to ensure that there is no hard collision with the object being hugged during the hugging process, thereby reducing damage to the object being hugged (coiled material / spacer pad or wooden pallet), and at the same time, the elastic pad can adaptively hold the layers of pipes on the outer peripheral side of the coiled material.

[0030] Preferably, as an improvement, a platform scale is provided on the lifting table to facilitate weighing the coiled material stacked each time.

[0031] Preferably, as an improvement, it further includes a linear actuator, a telescopic shield and a discharge conveyor line. The linear actuator is used to drive the lifting table away from or close to the discharge conveyor line. A transfer conveyor line is installed on the top of the lifting table, and the height of the transfer conveyor line is the same as that of the discharge conveyor line. The telescopic shield is located below the discharge conveyor line, and the telescopic shield is used to cover the empty length between the lifting table and the discharge conveyor line. When the lifting table is far away from the discharge conveyor line, the telescopic shield extends to cover the gap between the lifting table and the discharge conveyor belt, preventing personnel from falling and ensuring safety. When the lifting table moves towards the discharge conveyor belt, the telescopic shield retracts to ensure that the stacked coiled material on the transfer conveyor line can be stably transferred to the discharge conveyor line, thereby realizing automatic material delivery.

[0032] In addition, the presence of the transfer conveyor line can also prevent manual loading and unloading from affecting or damaging the surface of the lifting table or the platform scale.

[0033] The present invention also provides a blanking system, which includes the stacking device for coiled materials as described above, and also includes an internal sling for hoisting the coiled materials onto the support plate.

[0034] Preferably, as an improvement, the sling tray is strip-shaped, and there is a hollow area in the middle of the sling tray for the upper boom of the sling to pass through. The sling adopts an internal sling, which includes at least 2 booms arranged on the sling support column and a plurality of outwardly protruding arc-shaped elastic pads. All the booms are circumferentially distributed around the center of the sling, and all the arc-shaped elastic pads are also circumferentially distributed around the center of the sling. The arc-shaped elastic pads are located above the booms. All the booms can move away from / close to each other, and all the arc-shaped elastic pads can also move away from or close to each other. The booms are used to extend into the hollow area of the sling tray and lift the sling tray after moving away from each other. The plurality of arc-shaped elastic pads are used to abut against the inner hole side wall of the coiled material after moving away from each other, so as to ensure that during the hoisting process, the coiled material is lifted by the booms, and the coiled material is prevented from shaking during the hoisting process through the arc-shaped elastic pads. Description of the Drawings

[0035] Figure 1 It is a three-dimensional structure schematic diagram of Embodiment 1 of the present invention.

[0036] Figure 2 is Figure 1 the front view cross-sectional view of

[0037] Figure 3 is Figure 2 the partial enlarged schematic diagram in , where this figure also has a partial enlarged structure of the support plate.

[0038] Figure 4 is Figure 1 the half structure explosion schematic diagram of the upper hugging mechanism, side extraction mechanism, and lower hugging mechanism in (the drive mechanism is not shown).

[0039] Figure 5 is Figure 4 the three-dimensional schematic diagram after adjusting the angle.

[0040] Figure 6 is Figure 4 the three-dimensional structure schematic diagram after the side extraction mechanism in is exploded (the side extraction drive mechanism is not shown).

[0041] Figure 7 is Figure 6 the three-dimensional schematic diagram after adjusting the angle.

[0042] Figure 8 It is a three-dimensional structure schematic diagram of the sling and sling tray used in the embodiment of the present invention.

[0043] Figure 9 It is the main cross-sectional schematic diagram when the sling in the embodiment of the present invention does not lift the sling tray.

[0044] Figure 10 This is the main sectional view when the sling of the embodiment of the present invention lifts the lifting tray and the arc-shaped elastic cushion plate abuts against the inner wall of the coil hole.

[0045] Figure 11 This is the three-dimensional structure diagram of the second embodiment of the present invention.

[0046] Figure 12 It is Figure 11 The three-dimensional structure diagram after not showing the upper hugging mechanism, the side extraction mechanism and the lower hugging mechanism in

[0047] Figure 13 It is Figure 12 The right sectional view of

[0048] Figure 14 This is the three-dimensional structure diagram of the third embodiment of the present invention.

[0049] Figure 15 This is the three-dimensional structure diagram after not showing the four-axis palletizing robot in the third embodiment of the present invention.

[0050] Figure 16 This is the three-dimensional structure diagram of the four-axis palletizing robot in the embodiment of the present invention. The reference numerals in the accompanying drawings of the specification include: upper hugging mechanism 10, upper hugging ring 11, upper sliding seat 12, elastic pad 110, side extraction mechanism 20, support plate 21, metal bottom bracket 211, plastic plate 212, support sliding seat 22, metal frame 221, U-shaped bottom plate 23, lower hugging mechanism 30, lower hugging ring 31, lower sliding seat 32, elastic pad 110, lifting platform 40, platform scale 41, transfer conveyor line 42, telescopic protective cover 50, discharge conveyor line 60, four-axis palletizing robot 70, frame 100, coil 200, lifting tray 201, wooden pallet 301, spacer pad 302, inner sling 400, lifting arm 401, arc-shaped elastic cushion plate 402, three-axis truss 500, ground 600, pit 601. Detailed Description of the Invention

[0051] The following is a further detailed description through specific embodiments:

[0053] Embodiment 1

[0054] Combined with Figures 1 to 7, A stacking device for coiled materials, including an upper hugging mechanism 10, a side extraction mechanism 20, a lower hugging mechanism 30, and a lifting platform 40 arranged in sequence from top to bottom. The lifting platform 40 is used to support the coiled material 200. The side extraction mechanism 20 is used to temporarily support the coiled material 200 that is about to be stacked on the lifting platform 40. The upper hugging mechanism 10 is used to hug the coiled material 200 when the side extraction mechanism 20 is about to withdraw the support for the coiled material 200. The lower hugging mechanism 30 is used to hug the spacer pad 302 or the wooden pallet 301 placed on the lifting platform 40 to position the spacer pad 302 or the wooden pallet 301.

[0055] I. The upper hugging mechanism 10 and the lower hugging mechanism 30

[0056] The structures of the upper hugging mechanism 10 and the lower hugging mechanism 30 are similar. The upper hugging mechanism 10 includes an upper hugging drive, two upper sliding seats 12, and two upper hugging rings 11. The lower hugging mechanism 30 includes a lower hugging drive, two lower sliding seats 32, and two lower hugging rings 31.

[0057] The two upper hugging rings 11 are symmetrically arranged with respect to the coiled material 200. The upper hugging drive is fixed on the frame 100. The upper hugging drive is used to drive the upper sliding seat 12 to slide along the frame 100. The upper hugging ring 11 is fixed on the upper sliding seat 12. The two upper hugging rings 11 can move away from or close to each other under the corresponding upper hugging drive, and the two upper hugging rings 11 are used to hold the coiled material 200.

[0058] The two lower hugging rings 31 are symmetrically arranged with respect to the coiled material 200. The lower hugging drive is fixed on the side extraction mechanism 20. The lower hugging drive is used to drive the lower sliding seat 32 to slide on the side extraction mechanism 20. The lower hugging ring 31 is fixed on the lower sliding seat 32. The two lower hugging rings 31 can move away from or close to each other under the corresponding lower hugging drive, and the two lower hugging rings 31 are used to hold the spacer pad 302 or the wooden pallet 301 on the lifting platform 40 to position the spacer pad 302 or the wooden pallet 301.

[0059] Elastic pads 110 are fixed on the hugging surfaces of the upper hugging ring 11 and the lower hugging ring 31. The elastic pads 110 are made of rubber pads or silicone pads to ensure that there is no hard collision with the hugged object during the hugging process, thereby reducing the damage to the hugged object (coiled material 200 / spacer pad 302 or wooden pallet 301), and can also adaptively hold the layers of pipes on the outer peripheral side of the coiled material 200 through the elastic pads 110.

[0060] Metal steel frames are provided inside both the lower sliding seat 32 and the upper sliding seat 12 to ensure the strength of the sliding seats through the metal steel frames.

[0061] II. The side extraction mechanism 20

[0062] The side extraction mechanism 20 includes a side extraction driving machine, two support sliders 22, and two support plates 21. The side extraction driving machine is fixed on the frame 100. The support slider 22 is slidably connected to the frame 100. Each support plate 21 is fixed on the corresponding support slider 22. The two support plates 21 are symmetrically arranged with respect to the coiled material 200. The side extraction driving machine is used to drive the support slider 22 to slide so as to realize the mutual separation or approach between the support plates 21. There is a falling space for the hanging material tray 201 between the support plates 21. The lower sliding seats 32 of the lower hugging mechanism 30 correspond to the support sliders 22 one by one, and the lower sliding seats 32 are slidably connected to the bottoms of the support sliders 22, so that the lower hugging mechanism 30 forms a counterweight for the side extraction mechanism 20.

[0063] The distance between the upper hugging ring 11 and the support plate 21 is less than the pipe radius of the coiled material. In this embodiment, the upper hugging ring 11 is in contact with / close to the top surface of the support plate 21. The height of the upper hugging ring 11 hugging the coiled material 200 is not less than one-fourth of the height of the coiled material 200, so that the upper hugging ring 11 has a large enough contact area with the coiled material 200, thereby ensuring that the clamping force can meet the requirements. The lower hugging ring 31 is in contact with the bottom surface of the support plate 21.

[0064] A metal frame 221 is fixed on the support slider 22. The metal frame 221 is fixedly connected by multiple steel pipes perpendicular to each other. The area of the metal frame 221 facing the opposite support plate 21 is U-shaped. It also includes a U-shaped bottom plate 23 arranged at the bottom of the metal frame 221. The U-shaped structure of the U-shaped bottom plate 23 is aligned with the U-shaped structure of the metal frame 221. The support plate 21 is fixedly clamped between the U-shaped bottom plate 23 and the U-shaped structure of the metal frame 221, so that the force on the support plate 21 is more uniform, which helps to improve the support strength of the support plate 21 and extend the service life of the support plate 21.

[0065] The lower sliding seat 32 is slidably connected to the side of the metal frame 221 away from the U-shaped structure, and the lower hugging ring 31 can extend below the U-shaped structure of the metal frame 221.

[0066] The support plate 21 includes a metal bottom tray 211 and a plastic plate 212 fixed on the metal bottom tray 211. The plastic plate 212 is used to directly contact the coiled material 200. The side edge of the plastic plate 212 facing the center of the coiled material 200 is provided with an arc transition surface, and the arc transition surface bends downward.

[0067] In this embodiment, there are 2 upper hugging rings 11, 2 lower hugging rings 31, and 2 support plates 21. Therefore, the moving directions of the upper hugging ring 11, the lower hugging ring 31, and the support plate 21 are all parallel.

[0068] In this embodiment, the upper hugging drive, the lower hugging drive, and the side extraction drive are not shown in the drawings. The upper hugging drive, the lower hugging drive, and the side extraction drive can all adopt a drive source in the prior art that can output a linear reciprocating movement, such as a hydraulic cylinder, the output of a gear driving a rack driven by a motor, etc.

[0069] Combined with Figures 8 to 10 , the loading tray 201 of this embodiment is in a long strip shape, and a hollow area for the upper arm 401 of the lifting tool to pass through is provided in the middle of the loading tray 201. The lifting tool of this embodiment adopts an internal lifting tool 400, and the internal lifting tool 400 is installed on the three-axis truss 500. The three-axis truss 500 can drive the internal lifting tool 400 to move to realize the transfer of the coiled material 200.

[0070] The internal lifting tool 400 includes at least two arms 401 provided on the support column of the lifting tool and a plurality of outwardly protruding arc-shaped elastic pads 402. In this embodiment, the number of arms 401 is two, and the two arms 401 are symmetrically arranged about the center of the lifting tool. The two arms 401 are slidably connected to the support column of the internal lifting tool 400. A first driver and a second driver are provided on the support column. The first driver is used to drive the two arms 401 to move away from each other. The arms 401 are used to extend into the hollow area of the loading tray 201 and lift the loading tray 201 after moving away from each other. The plurality of arc-shaped elastic pads 402 are circumferentially evenly distributed about the center of the lifting tool. The second driver can drive the plurality of arc-shaped elastic pads 402 to approach / separate simultaneously. After the plurality of arc-shaped elastic pads 402 move away from each other, they are used to abut against the inner hole side wall of the coiled material 200 to ensure that during the loading process, the coiled material 200 is lifted by the arms 401, and the coiled material 200 is prevented from shaking during the lifting process by the arc-shaped elastic pads 402.

[0071] The steps of using this embodiment for stacking operations are as follows:

[0072] First, first place the coiled material 200 not tied with a metal band on the support plate 21 where the side extraction mechanism 20 has been brought closer by using the internal lifting tool 400 to lift the loading tray 201 at the bottom of the coiled material 200. The support plate 21 after approaching each other supports the coiled material 200, while the loading tray 201 originally supporting the bottom of the coiled material 200 falls in the falling space between the support plates 21, and the fallen loading tray 201 is taken away.

[0073] Second, then control the lifting table 40 to rise to the receiving plane (if it is the placement of the bottom layer of the coiled material 200, this receiving plane is the receiving top surface of the wooden pallet 301, otherwise it is the top surface of the spacer 302) to be close to / against the bottom surface of the support plate 21. After the spacer 302 or the wooden pallet 301 is close to / against the bottom surface of the support plate 21, control the two lower hugging rings 31 of the lower hugging mechanism 30 to approach each other to position the spacer 302 or the wooden pallet 301.

[0074] Thirdly, then control the upper clamping ring 11 to hold the coiled material 200.

[0075] Fourthly, finally control the side extraction mechanism 20 to move the support plates 21 away from each other. After the support plates 21 move away, the coiled material 200 loses support and drops (the frictional force generated by the upper clamping ring 11 clamping the coiled material is less than the self-weight of the coiled material, so that the coiled material can still drop under clamping).

[0076] Fifthly, after the dropping is completed, all the clamping rings retract, and the lifting platform 40 drives the coiled material 200 to descend. The subsequent stacking cycle repeats the first to fourth steps until the stacking is completed.

[0077] In this embodiment, since the upper clamping mechanism 10 still holds the coiled material 200 during the dropping process, and the outer diameters of the coiled discs are basically the same, during the dropping process when the support plates 21 no longer support the coiled material 200, the upper clamping ring 11 forms a certain support and circumferential limitation for the coiled material 200, which can not only avoid the inclination problem of the coiled material 200 after dropping, but also form a certain lifting force for the coiled material 200 during the withdrawal process of the support plates 21 of the side extraction mechanism 20, thereby reducing the frictional force and mutual extrusion force between the support plates 21 and the bottom pipes during the extraction process. This can not only reduce or even avoid the problem of the bottom pipes of the coiled material 200 being pressed and deformed, but also reduce or even avoid the problem of serious wear of the pipes due to excessive frictional force between the bottom pipes and the support plates 21. In addition, the double-layer structure of the support plates 21 is provided with plastic plates 212 with a very high smoothness and different materials from the coiled material 200, which also helps to reduce the frictional force between the support plates 21 and the bottom pipes of the coiled material 200, thereby reducing or even avoiding the problem of wear of the bottom pipes of the coiled material 200.

[0078] The upper clamping mechanism 10 and the lower clamping mechanism 30 clamp the support plate 21 in a manner equivalent to clamping from above and below, which can ensure the force stability of the support plate 21. In particular, the lower clamping mechanism 30 is directly installed on the support slide 22 of the side extraction mechanism 20 to form a counterweight for the side extraction mechanism 20. The pressure on the support plate 21 is balanced by the counterweight. Moreover, the lower clamping ring 31 is located below the support plate 21 and is in contact with the support plate 21. Therefore, the force on the support plate 21 after being pressed can be transmitted to the lower slide 32 through the lower clamping ring 31, further dispersing the force on the support plate 21. This enables copper pipe coils 200 weighing up to 500 kg to be stacked in a loose state without tipping over, and also ensures the stability and reliability of the entire stacking device. During the process of the coil 200 falling onto the spacer pad 302 / wood pallet 301, since the upper clamping ring 11 clamps a section of the bottom of the coil 200 at a certain height, it can prevent the problem of the coil 200 being scattered or tilted due to sudden falling under gravity. It can also correct the position of the coil by using the mutual approach of the upper clamping rings 11 when there are differences in the hanging positions of the coil by the lifting tool 400, ensuring the stability after stacking.

[0079] In addition, the setting of the lifting platform 40 in this embodiment enables the coil 200 to be lowered to a position convenient for placing the next coil 200 after it is placed, thus facilitating the automation of stacking.

[0080] In addition, when this embodiment is adopted, since the support plate 21 of the side extraction mechanism 20 only needs to leave space for the lifting tray 201, the two support plates 21 can be designed larger, so as to achieve a large-area support for the bottom of the coil 200 by the support plate 21, reducing or even avoiding the problem of the bottom coil 200 being deformed under pressure due to a small bearing area at the bottom.

[0081] Embodiment 2

[0082] Combined with Figures 11 to 13 , this Embodiment 2 is further improved on the basis of Embodiment 1: Specifically as follows: The lifting platform 40 is arranged in the pit 601 on the ground 600 so that there can be a larger space between the lifting platform 40 and the lifting tool 400. A platform scale 41 is fixed on the top of the lifting platform 40 to facilitate weighing each stacked coil 200. A transfer conveyor 42 is installed on the top of the platform scale 41.

[0083] At the top of the pit 601, a discharging conveyor line 60 is installed. The length of the pit 601 is greater than the lengths of the transfer conveyor line 42 and the discharging conveyor line. The discharging conveyor line 60 is located at the side of the lifting table 40. A linear actuator is installed in the pit 601. The linear actuator is used to drive the lifting table 40 to move away from or close to the discharging conveyor line 60 along the slide rail fixed in the pit 601. The slide rail is parallel to the output directions of the discharging conveyor line 60 and the transfer conveyor line 42. The height of the transfer conveyor line 42 is the same as that of the discharging conveyor line 60.

[0084] A telescopic protective cover 50 is arranged below the discharging conveyor line 60. The telescopic protective cover 50 is used to cover the empty length between the lifting table 40 and the discharging conveyor line 60. When the lifting table 40 is far from the discharging conveyor line 60, the telescopic protective cover 50 extends to cover the gap between the lifting table 40 and the discharging conveyor belt, preventing personnel from falling into the pit 601 and ensuring safety. When the lifting table 40 moves towards the discharging conveyor belt, the telescopic protective cover 50 retracts to ensure that the stacked coil materials 200 on the transfer conveyor line 42 can be stably transferred to the discharging conveyor line 60, thus realizing automatic material discharging.

[0085] In addition, the existence of the transfer conveyor line 42 can also prevent the impact or damage to the surface of the lifting table 40 or the platform scale 41 caused by manual loading and unloading.

[0086] Embodiment III

[0087] Combined with Figures 14 to 16 , this embodiment provides a blanking system and a stacking device for coil materials 200. It further includes an internal hoist 400 for hoisting the coil materials 200 onto the support plate 21. The internal hoist 400 is installed on a three-axis truss 500. The three-axis truss 500 is fixed on the ground 600. The transfer of the coil materials 200 is realized by driving the internal hoist 400 to move through the three-axis truss 500.

[0088] It further includes a four-axis palletizing robot 70 for receiving the lifting trays 201. The output arm of the four-axis palletizing robot 70 can move in the X-axis, Y-axis, and Z-axis directions, and also has the rotation function of the output arm. A plurality of suction cups are installed on the output arm to facilitate directly palletizing the removed lifting trays 201 by using the rotation function.

[0089] The four-axis palletizing robot 70 is used to receive the lifting trays 201 between the support plates 21 and also to stack and palletize the lifting trays 201.

[0090] In this embodiment, the three-axis truss 500 is used to drive the internal hoist 400 to move in the X-axis, Y-axis, and Z-axis directions, so as to ensure that the annealed coil materials 200 are directly lifted and placed on the support plate 21 of the side extraction mechanism 20 with the lifting trays 201.

[0091] After the coil stock 200 to be coiled is placed on the support plate 21, the inner sling 400 disengaging from the coil stock 200 causes the lifting tray 201 to fall under its own weight onto the four-axis palletizing robot 70 that has been in position. Subsequently, the four-axis palletizing robot 70 places the lifting tray 201 at the set position for stacking and palletizing, completing the entire automatic blanking process.

[0092] The above are only embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics that are well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, and these should also be regarded as the protection scope of the present invention, which will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A stacking device for coiled materials, comprising a lifting platform for lifting the coiled materials, characterized in that: It also includes an upper embracing mechanism and a side withdrawal mechanism that are located above the lifting platform and are arranged from top to bottom. The upper embracing mechanism includes at least two upper embracing rings, all of which are evenly distributed circumferentially, and all of which can move away from or approach each other under the corresponding drive. The upper embracing rings are used to hold the coiled material; the side withdrawal mechanism includes at least two support plates that can move away from or approach each other, all of which are evenly distributed circumferentially, and there is falling space for the hanging material tray between the support plates.

2. A coil stacking device according to claim 1, characterized in that: It also includes a lower embracing mechanism located below the support plate, the lower embracing mechanism includes at least two lower embracing rings, all of which are evenly distributed circumferentially, and all of which can move away from or approach each other under corresponding drives, and the lower embracing rings are used to embrace the interlayer pads or wooden pallets used for stacking.

3. A coil stacking device according to claim 2, characterized in that: The side-drawing mechanism also includes a supporting slide and a side-drawing driving machine. The supporting plate is fixed on the corresponding supporting slide. The side-drawing driving machine is used to drive the supporting slide to slide so as to achieve the support plates moving away from or approaching each other. The lower embracing mechanism is installed at the bottom of the supporting slide.

4. A coil stacking device according to claim 3, characterized in that: The upper embracing ring and the lower embracing ring both include an embracing drive motor and a sliding seat. Each embracing ring is fixed on a corresponding sliding seat. The embracing drive motor is used to drive the sliding seat to move so as to achieve the embracing rings moving away from or approaching each other. The sliding seat of the upper embracing mechanism is slidably connected to the frame, and the sliding seat of the lower embracing mechanism is slidably connected to the bottom of the corresponding supporting slide seat.

5. A coil stacking device according to claim 4, characterized in that: The lower embracing ring is in contact with the bottom surface of the support plate, and the distance between the upper embracing ring and the support plate is smaller than the radius of the tube of the coiled material.

6. A coil stacking device according to claim 5, characterized in that: The height of the upper embracing ring embracing the coiled material is not less than one quarter of the height of the coiled material.

7. The coil stacking device according to claim 1, characterized in that: The support plate comprises a metal base and a plastic plate placed on the metal base, wherein the plastic plate is used for directly contacting the coiled material.

8. A coil stacking device according to claim 7, characterized in that: The side edge of the plastic plate facing the center of the coiled material is provided with an arc-shaped transition surface, which is bent downward.

9. A coil stacking device according to claim 2, characterized in that: An elastic pad is fixed on the hugging surface of the upper hugging ring.

10. A material feeding system, characterized in that: A device for stacking coiled materials as claimed in any one of claims 1 to 9, further comprising an internal hoisting device for hoisting the coiled materials onto a support plate.

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