A multi-specification inner support type unwinding machine

Abstract

This utility model belongs to the technical field of sheet metal production lines, and relates to a multi-specification internal support type unwinding machine. It includes a clamping mechanism arranged opposite to each other. The clamping mechanism includes a base plate, an internal support head, and multiple sliders distributed circumferentially. The internal support head is connected to an axial drive device. When the internal support head moves axially, it drives the sliders to open and close radially. The base plate is provided with two or more sets of flange assemblies. Each flange assembly includes multiple flanges forming an openable ring. The flanges of different flange assemblies have different radial dimensions. The outer ring flange is fitted onto the outer circumference of the inner ring flange, and the inner ring flange has a longer axial dimension. The innermost flange is fastened to the slider. Each layer of flanges and sliders is rigidly integrated and axially fixedly connected and radially movable connected to the base plate. The multi-specification internal support type unwinding machine provided by this utility model can adapt to coils of different specifications.

Description

Technical Field

[0001] This utility model belongs to the technical field of sheet metal production lines, and relates to a multi-specification internal support type unwinding machine. Background Technology

[0002] On most coil processing production lines, there is an unwinding process. The unwinding process involves using the flange of an internal support unwinder to clamp the inner wall of the coil, and then rotating the unwinding shaft to continuously release the coil. Chinese utility model patent CN208413349U (publication date: 2019-01-22) discloses an internal support type unwinding machine, including a base frame, a pair of supports and a pair of internal support unwinding mechanisms. The internal support unwinding mechanism includes a hollow unwinding shaft, which is mounted on the supports through bearings. A push rod is provided in the inner cavity of the unwinding shaft. One end of the push rod is connected to an internal support head, and the other end is connected to a push rod cylinder. The internal support head has a conical structure, with its large circle located on the side away from the supports. Four dovetail grooves are evenly provided on the outer circumference of the internal support head. Flanges slide on the dovetail grooves, and the four flanges form a ring. A retaining ring is provided between the flanges and the supports, and the flanges are axially fixed on the retaining ring.

[0003] In actual production, different specifications of unwinding mechanisms are required for different specifications of roll materials. Although the internal support type unwinding mechanism can be adapted to various specifications of roll materials by adjusting the radial support size, the specifications of the roll materials vary greatly. This adjustment method can only fine-tune the adaptation to the specifications. Therefore, it is necessary to develop an unwinding machine that can truly adapt to multiple roll material specifications. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a multi-specification internal support unwinding machine that can adapt to different specifications of roll materials.

[0005] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution: A multi-specification internal support type unwinding machine includes a clamping mechanism arranged opposite to each other. The clamping mechanism includes a base plate, an internal support head, and multiple sliders distributed circumferentially. The internal support head is driven by an axial drive device. The circumferential contact surfaces of the internal support head and the sliders are mating conical structures and are slidably connected. When the internal support head moves axially, it drives the sliders to open and close radially. The base plate is provided with two or more sets of flange assemblies. Each set of flange assemblies includes multiple flanges forming an openable and closable ring. The flanges of different flange assemblies have different radial dimensions. The outer ring flange is fitted onto the outer circumferential surface of the inner ring flange, and the inner ring flange has a longer axial dimension. The innermost ring flange is fastened to the slider. Each layer of flanges and sliders are rigidly connected to the base plate axially and radially movable.

[0006] In the aforementioned multi-specification internal support unwinding machine, the inner ring flange and outer ring flange refer to the relative positions of adjacent flanges. A flange can be either an inner ring flange or an outer ring flange.

[0007] In the aforementioned multi-specification internal support unwinding machine, the slider and the inner ring flange are fastened together by radial bolts, and the inner ring flange and the outer ring flange are fastened together by radial bolts, thereby making each layer of flanges and the slider form a rigid whole.

[0008] In the aforementioned multi-specification internal support unwinding machine, the slider and the internal support head slide through a dovetail groove structure.

[0009] In the aforementioned multi-specification internal support unwinding machine, the end of the internal support head is provided with a conical disc, which forms a fixed clamping structure for the unwinding machine; furthermore, the conical disc includes a frustum portion and a limiting ring on the outer side of the frustum portion.

[0010] In the aforementioned multi-specification internal support unwinding machine, the flange assembly is provided in two sets, including an outer flange assembly composed of an outer flange and an inner flange assembly composed of an inner flange. The outer flange assembly, the inner flange assembly, and the conical disc form a three-stage clamping structure for the unwinding machine.

[0011] In the above-mentioned multi-specification internal support unwinding machine, the clamping mechanism is set on the housing, and a hollow rotating shaft is provided through the housing. A mandrel is inserted inside the rotating shaft. One end of the mandrel is connected to a hydraulic cylinder, and the other end is connected to an internal support head. The rotating shaft is driven to rotate by a motor and drives the clamping mechanism to unwind.

[0012] In the above-mentioned multi-specification internal support unwinding machine, a first bearing seat and a second bearing seat are respectively provided on both sides of the housing. The first bearing seat and the second bearing seat are respectively equipped with a first bearing and a second bearing that support the rotating shaft. A fixed seat connected to the rotating shaft is provided on the outside of the first bearing seat. The oil cylinder is installed on the fixed seat. An end cover is provided on the outside of the second bearing seat. A thrust bearing is provided between the end cover and the base plate.

[0013] In the aforementioned multi-specification internal support unwinding machine, the housing is mounted on the base, and the two housings are a fixed housing and a movable housing. The fixed housing is fixedly connected to the base, and the movable housing slides on the linear guide rail of the base. The movable housing is driven by a cylinder to slide and adjust the clamping distance.

[0014] In the aforementioned multi-specification internal support unwinding machine, the bottom of the base is equipped with a set of movable wheels, which are driven by a movable reducer to slide along the ground track.

[0015] In the aforementioned multi-specification internal support unwinding machine, the hydraulic cylinder, air cylinder, motor, and reducer can all be replaced with other power devices that have the same effect.

[0016] Compared with the prior art, this utility model has the following advantages: 1. This utility model provides a multi-specification internal support unwinding machine, employing multiple sets of flange assemblies. Each set of flange assemblies can adapt to one specification of coil material, thus enabling one unwinding machine to adapt to multiple specifications of coil material. This eliminates the need to change unwinding machines during production, saving processes and reducing costs. Simultaneously, the multiple flange assemblies are driven to open and close by the same drive structure, resulting in a simpler structure. When using the flange of a certain flange assembly to fix the coil material, the flange with a smaller inner radial dimension does not contact the coil material, automatically forming a clearance structure. The end face of the flange with a larger outer radial dimension can also serve as a limiting plane, further enhancing the stability of the clamping.

[0017] 2. As a preferred structure, this utility model also utilizes a conical disc set on the inner support head, together with the outer flange assembly and the inner flange assembly, to form a three-stage clamping structure for the unwinding machine, which respectively corresponds to the three commonly used specifications of coiled material in sheet production, achieving a balance between economy and versatility. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a partial structural diagram of the present invention; Reference numerals: 1. Base plate; 2. Inner support head; 3. Slider; 4. Flange; 4a. Outer flange; 4b. Inner flange; 5. Conical disc; 6. Housing; 7. Rotating shaft; 8. Mandrel; 9. Hydraulic cylinder; 10. Motor; 11. First bearing housing; 12. Second bearing housing; 13. First bearing; 14. Second bearing; 15. Fixed seat; 16. End cover; 17. Thrust bearing; 18. Base; 19. Linear guide rail; 20. Cylinder; 21. Moving wheel set; 22. Moving reducer; 23. Ground track. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-2 : A multi-specification internal support type unwinding machine includes a clamping mechanism arranged opposite to each other. The clamping mechanism includes a base plate 1, an internal support head 2, and multiple sliders 3 distributed circumferentially. The internal support head 2 is connected to an axial drive device. The circumferential contact surfaces of the internal support head 2 and the sliders 3 are mating conical structures and are slidably connected. When the internal support head 2 moves axially, it drives the sliders 3 to open and close radially. The base plate 1 is provided with two or more sets of flange assemblies. Each set of flange assemblies includes multiple flanges 4 forming an openable and closable ring. The flanges 4 of different flange assemblies have different radial dimensions. The outer ring flanges 4 are fitted on the outer circumferential surface of the inner ring flanges 4, and the inner ring flanges 4 have a longer axial dimension. The innermost flanges 4 are fastened to the sliders 3. Each layer of flanges 4 and sliders 3 are rigidly connected to the base plate 1 in an axial fixed connection and radially movable connection.

[0020] The working method of this embodiment is as follows: Select a suitable flange 4 according to the specifications of the coil, move the coil to a position coaxial with the clamping mechanism through the feeding mechanism, and then move the clamping mechanism to insert the selected flange 4 into the inner hole of the coil. Start the axial drive device, the inner support head 2 moves inward, and the conical surface drives the slider 3 to expand radially. Then, the slider 3 drives the flange 4 to expand radially until the flange 4 firmly clamps the coil. At this time, after the inner ring flange 4 of the selected flange 4 is expanded, there is still a gap between it and the inner wall of the coil. Since the selected flange 4 has a longer axial dimension than the outer ring flange 4, when the selected flange 4 is inserted into the coil, the outer ring flange 4 is still located outside the coil, and its movement will not interfere with the coil. Moreover, the end face of the outer ring flange 4 can also serve as a limiting plane for the end of the coil. After the feeding mechanism is reset, the clamping of the coil is completed, and then unwinding can be performed.

[0021] Furthermore, the slider 3 is fastened to the inner ring flange 4 by radial bolts, and the inner ring flange 4 and the outer ring flange 4 are fastened to each other by radial bolts, thereby making each layer of flanges 4 and the slider 3 form a rigid whole. When the inner support head 2 moves axially, the slider 3 and each layer of flanges 4 open and close synchronously.

[0022] Preferably, the slider 3 and the inner support head 2 slide through a dovetail groove structure, which is set on the conical surface (outer peripheral surface of the inner support head 2 and inner peripheral surface of the slider 3) where the two cooperate.

[0023] This embodiment provides a three-stage clamping unwinding machine for the three mainstream coil specifications used in sheet production: The end of the aforementioned inner support head 2 is provided with a conical disc 5, which forms a fixed clamping structure for the unwinding machine. Further, the conical disc 5 includes a frustum and a limiting ring on the outer side of the frustum. The aforementioned flange assembly is provided in two sets, including an outer flange assembly composed of an outer flange 4a and an inner flange assembly composed of an inner flange 4b. The outer flange assembly, the inner flange assembly, and the conical disc 5 form a three-stage clamping structure for the unwinding machine, which respectively correspond to small-size, medium-size, and large-size coils. When using small-size coils, a fixed clamping structure is used because the coil is easy to clamp. When using medium-size and large-size coils, an inner support clamping structure is used to simplify the structure and reduce costs.

[0024] The installation structure of the clamping mechanism in this embodiment is as follows: the clamping mechanism is installed on the housing 6, and a hollow rotating shaft 7 is provided through the housing 6. A mandrel 8 is inserted inside the rotating shaft 7. One end of the mandrel 8 is connected to an axial drive device - hydraulic cylinder 9, and the other end is connected to an inner support head 2. When the piston rod of the hydraulic cylinder 9 extends or retracts, the inner support head 2 moves axially accordingly. The rotating shaft 7 is driven to rotate by the motor 10 and drives the clamping mechanism to unwind.

[0025] After the clamping mechanism completes clamping, the motor 10 drives the rotating shaft 7 to rotate through the transmission system (such as a sprocket and chain system), and the entire clamping mechanism rotates synchronously with the rotating shaft 7, thereby driving the unwinding of the coil.

[0026] The aforementioned housing 6 has a first bearing seat 11 and a second bearing seat 12 respectively on both sides. The first bearing seat 11 and the second bearing seat 12 are respectively equipped with a first bearing 13 and a second bearing 14 supporting the rotating shaft 7. A fixed seat 15 connected to the rotating shaft 7 is provided on the outside of the first bearing seat 11. The hydraulic cylinder 9 is mounted on the fixed seat 15. An end cover 16 is provided on the outside of the second bearing seat 12. A thrust bearing 17 is provided between the end cover 16 and the base plate 1. Specifically, the outer ring of the first bearing 13 is interference-fitted with the first bearing seat 11, and the inner ring is interference-fitted with the rotating shaft 7. The fixed seat 15 is press-fitted onto the inner ring of the first bearing 13 and is fastened to the rotating shaft 7. The outer ring of the second bearing 14 is interference-fitted with the second bearing seat 12, and the inner ring is interference-fitted with the rotating shaft 7. The end cover 16 is fastened to the second bearing seat 12 and press-fitted onto the outer ring of the second bearing 14.

[0027] Furthermore, the housing 6 is mounted on the base 18. The two housings 6 are a fixed housing and a movable housing, respectively. The fixed housing is fixedly connected to the base 18, and the movable housing slides on the linear guide rail 19 of the base 18. The movable housing is driven by the cylinder 20 to slide and adjust the clamping distance so as to smoothly complete the clamping action.

[0028] Furthermore, the base 18 is provided with a set of movable wheels 21 at its bottom, which is driven by a movable reducer 22 to slide along the ground track 23 to adjust the overall position of the unwinding machine.

[0029] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A multi-specification internal support type unwinding machine, comprising a clamping mechanism arranged opposite to each other, the clamping mechanism comprising a base plate (1), an internal support head (2) and a plurality of sliders (3) distributed circumferentially, the internal support head (2) being connected to an axial drive device, the circumferential contact surfaces of the internal support head (2) and the sliders (3) being a matching conical structure and slidingly connected, the internal support head (2) driving the sliders (3) to open and close radially when moving axially, characterized in that, The base plate (1) is provided with two or more flange assemblies. Each flange assembly includes multiple flanges (4) that form an openable ring. The flanges (4) of different flange assemblies have different radial dimensions. The outer flange (4) is fitted on the outer circumference of the inner flange (4) and the inner flange (4) has a longer axial dimension. The innermost flange (4) is fastened to the slider (3). Each layer of flanges (4) and slider (3) are rigidly connected to the base plate (1) in an axial fixed connection and in a radial movable connection.

2. The multi-specification internal support type unwinding machine according to claim 1, characterized in that, The end of the inner support head (2) is provided with a conical disc (5), which forms a fixed clamping structure for the unwinding machine.

3. The multi-specification internal support type unwinding machine according to claim 2, characterized in that, The flange assembly is provided in two sets, including an outer flange assembly composed of an outer flange (4a) and an inner flange assembly composed of an inner flange (4b). The outer flange assembly, the inner flange assembly and the conical disc (5) form a three-stage clamping structure for the unwinding machine.

4. The multi-specification internal support type unwinding machine according to claim 1, characterized in that, The clamping mechanism is mounted on the housing (6), through which a hollow rotating shaft (7) is provided. A mandrel (8) is inserted inside the rotating shaft (7). One end of the mandrel (8) is connected to a hydraulic cylinder (9), and the other end is connected to an inner support head (2). The rotating shaft (7) is driven to rotate by a motor (10) and drives the clamping mechanism to unwind.

5. A multi-specification internal support type unwinding machine according to claim 4, characterized in that, The housing (6) is provided with a first bearing seat (11) and a second bearing seat (12) on both sides. The first bearing seat (11) and the second bearing seat (12) are respectively equipped with a first bearing (13) and a second bearing (14) supporting the rotating shaft (7). A fixed seat (15) connected to the rotating shaft (7) is provided on the outside of the first bearing seat (11). The oil cylinder (9) is installed on the fixed seat (15). An end cover (16) is provided on the outside of the second bearing seat (12). A thrust bearing (17) is provided between the end cover (16) and the base plate (1).

6. A multi-specification internal support type unwinding machine according to claim 4, characterized in that, The box (6) is set on the base (18). The two boxes (6) are a fixed box and a movable box, respectively. The fixed box is fixedly connected to the base (18), and the movable box slides on the linear guide rail (19) of the base (18). The movable box is driven by a cylinder (20) to slide and adjust the clamping distance.

7. A multi-specification internal support type unwinding machine according to claim 6, characterized in that, The base (18) is equipped with a set of movable wheels (21) at the bottom, which is driven by a movable reducer (22) to slide along the ground track (23).

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