Automatic unreeling machine
The combined structure of the ratchet and the stop pawl solves the problem of loose coils caused by the inertial rotation of the unwinder reel, achieves stable one-way unwinding or winding, prevents jamming, and improves the reliability of unwinding work.
Patent Information
- Application Number
- CN202422754927.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-11-12
AI Technical Summary
The existing unwinding machine lacks a rolling limit device for the winding drum, which causes the winding drum to rotate under the action of inertia, resulting in loose and messy coils, affecting normal unwinding work.
The ratchet and stop pawl combination structure is adopted. Through the unidirectional intermittent motion and locking mechanism of the ratchet and stop pawl, the unidirectional unwinding or winding action of the rotating drum is realized to prevent inertial rotation.
It effectively prevents the coil from becoming loose and messy, avoids jamming during the next rewinding, and improves the stability and efficiency of the unwinding work.
Smart Images
Figure CN223356956U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of coiling equipment, and more specifically, to an automatic unwinding machine. Background Art
[0002] The unwinder is a machine that rolls the raw material after it has been wound up, or releases or rewinds the raw material into a coil by mechanical means. It is widely used in paper rolls, cloth rolls, plastic rolls, and metal coil processing production lines. In the existing unwinding and rewinding process, most of the unwinders are driven manually to rewind and unwind the material. However, the existing unwinders lack a device to limit the rolling of the rewinding drum inside them. When the unwinder is manually driven to rewind and unwind the material, the rewinding drum inside the unwinder will rotate under the action of inertia, causing the coil on the rewinding drum to become loose and messy, resulting in a jam when the rewinding is done next time, thereby affecting the normal unwinding work. Utility Model Content
[0003] In response to the deficiencies of the above-mentioned prior art, the purpose of this application is to provide an automatic unwinding machine, comprising a base, a rotating drum rotatably provided on the base, and the rotating drum is located laterally inside the base, and a ratchet is sleeved on one end of the rotating drum, and the ratchet is located on one side of the outside of the base, and the ratchet moves synchronously with the rotating drum, a stop pawl is movably provided on the side of the outside of the base, and the stop pawl and the ratchet are plug-fitted together, and when the rotating drum drives the ratchet to rotate on the base, the ratchet and the stop pawl perform unidirectional intermittent motion synchronously, a driving member is laterally provided on the other side of the outside of the base, and the driving member is drivingly connected to the other end of the rotating drum, and the driving member drives the rotating drum to rotate together with the ratchet on the base, thereby performing a unidirectional unwinding action on the rolled material on the rotating drum or a unidirectional winding action on the raw material.
[0004] Preferably, an L-shaped bracket is provided on the side of the base, and a double-ear tension spring is provided between the L-shaped bracket and the stopping pawl, and both ends of the double-ear tension spring are elastically connected to the L-shaped bracket and the top of the stopping pawl respectively.
[0005] Preferably, a connecting column is formed on the stopping pawl, and the connecting column is laterally located at the side of the stopping pawl, and the stopping pawl is hinged to the outer side of the base through the connecting column.
[0006] Preferably, a keyway is formed transversely on the side of the ratchet, and the keyway completely penetrates the ratchet, and the keyway is connected to the center hole of the ratchet. A first flat key is formed transversely on the outer surface of one end of the rotating cylinder, and the first flat key rotates synchronously with the rotating cylinder, and the first flat key is inserted into the keyway.
[0007] Preferably, a limiting rod is formed on the base, and the limiting rod is located laterally inside the base, and the limiting rod is located above the rotating cylinder.
[0008] Preferably, a slot is formed on the outer surface of the limiting rod, and the slot is recessed inwards and vertically passes through the limiting rod.
[0009] Preferably, a rocker is provided between the ratchet and the rotating cylinder, and the rocker is inserted into the center hole of the ratchet and contacts the end face of the rotating cylinder, and the rocker drives the ratchet together with the rotating cylinder to rotate on the base, and a second flat key is laterally formed on the outer surface of one end of the rocker, and the second flat key rotates synchronously with the rocker, and the second flat key is inserted into the keyway.
[0010] In summary, this application has the following beneficial effects:
[0011] When the roll material on the rotating drum needs to be unloaded or wound, it is only necessary to keep the rotation direction of the ratchet wheel consistent with the direction of unloading or winding of the rotating drum and then sleeve the ratchet wheel on one end of the rotating drum. At this time, the rotating drum and the ratchet wheel can be driven by the driving member to rotate clockwise, thereby realizing the unloading or winding action. At this time, the stop pawl will slide on the back of the ratchet teeth; when the driving member stops driving the rotating drum and the ratchet wheel to rotate, the stop pawl will be inserted into the tooth groove of the ratchet wheel and lock the ratchet wheel and the rotating drum to the base, thereby preventing the rotating drum from rotating counterclockwise under the action of inertia; when the roll material on the rotating drum needs to be unloaded or wound, it is only necessary to keep the rotation direction of the ratchet wheel consistent with the direction of unloading or winding of the rotating drum and then sleeve the ratchet wheel on one end of the rotating drum. At this time, the rotating drum and the ratchet wheel can be driven by the driving member to rotate counterclockwise, thereby realizing unloading. When the cam is in a state of rotation and the cam is engaged, the cam is engaged with the tooth of the ratchet wheel and the cam is engaged with the tooth of the ratchet wheel, and the cam is engaged with the tooth of the ratchet wheel and the cam is engaged with the tooth of the ratchet wheel, thereby preventing the cam from rotating clockwise under the action of inertia. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of an automatic unwinding machine;
[0013] Figure 2 It is another structural schematic diagram of an automatic unwinding machine.
[0014] Figure numerals: 1. base; 2. rotating cylinder; 3. ratchet; 4. stop pawl; 5. driving member; 6. L-shaped bracket; 7. double-ear tension spring; 8. connecting column; 9. keyway; 10. first flat key; 11. limit rod; 12. slot; 13. rocker; 14. second flat key. DETAILED DESCRIPTION
[0015] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.
[0016] It should be noted that when a component is referred to as being “fixed to” or “disposed on” another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being “connected to” another component, it can be directly or indirectly connected to the other component.
[0017] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.
[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.
[0019] An automatic unwinding machine, see Figures 1 to 2, including a base 1, on which a rotating cylinder 2 is rotatably provided, and the rotating cylinder 2 is laterally located inside the base 1, and a ratchet 3 is sleeved on one end of the rotating cylinder 2, and the ratchet 3 is located on one side of the outside of the base 1, and the ratchet 3 moves synchronously with the rotating cylinder 2, and a stop pawl 4 is movably provided on the side of the outside of the base 1, and the stop pawl 4 is plug-fitted with the ratchet 3, and when the rotating cylinder 2 drives the ratchet 3 to rotate on the base 1, the ratchet 3 and the stop pawl 4 perform unidirectional intermittent motion synchronously, and a driving member 5 is laterally provided on the other side of the outside of the base 1, and the driving member 5 is drivingly connected to the other end of the rotating cylinder 2, and the driving member 5 drives the rotating cylinder 2 together with the ratchet 3 to rotate on the base 1 rotates. In this embodiment, when it is necessary to unwind the coiled material on the rotating drum 2 in a clockwise direction or to coil the material, it is only necessary to keep the rotation direction of the ratchet 3 consistent with the unwinding or coiling direction of the rotating drum 2 and then sleeve the ratchet 3 on one end of the rotating drum 2. At this time, the driving member 5 can drive the rotating drum 2 and the ratchet 3 to rotate clockwise, thereby realizing the unwinding or coiling action. At this time, the stop pawl 4 will slide on the back of the teeth of the ratchet 3; when the driving member 5 stops driving the rotating drum 2 and the ratchet 3 to rotate, the stop pawl 4 will be inserted into the tooth groove of the ratchet 3 and lock the ratchet 3 and the rotating drum 2 on the base 1, thereby preventing the rotating drum 2 from being rotated due to inertia. When the material on the rotating drum 2 needs to be unwound or wound in a counterclockwise manner, the ratchet 3 is simply rotated in the same direction as the unwound or wound direction of the rotating drum 2, and then the ratchet 3 is sleeved on one end of the rotating drum 2. At this time, the rotating drum 2 and the ratchet 3 can be driven by the driving member 5 to rotate counterclockwise, thereby realizing the unwound or wound action. At this time, the stop pawl 4 will slide on the back of the teeth of the ratchet 3. When the driving member 5 stops driving the rotating drum 2 and the ratchet 3 to rotate, the stop pawl 4 will be inserted into the tooth groove of the ratchet 3, and the ratchet 3 and the rotating drum 2 are locked on the base 1, thereby preventing the rotating drum 2 from being inertial. The unwinding machine is manually driven to rewind the material, but the existing unwinding machine lacks a device for limiting the rolling of the rewinding drum inside it. When the unwinding machine is manually driven to rewind the material, the rewinding drum inside the unwinding machine will rotate under the action of inertia, thereby making the coiled material on the rewinding drum loose and messy, resulting in a jamming situation when the material is rewound next time, thereby affecting the technical problem of normal unwinding work.
[0020] An L-shaped bracket 6 is provided on the side of the base 1, and a double-ear tension spring 7 is provided between the L-shaped bracket 6 and the stop pawl 4, and the two ends of the double-ear tension spring 7 are elastically connected to the L-shaped bracket 6 and the top of the stop pawl 4 respectively. In this embodiment, by providing the double-ear tension spring 7, the stop pawl 4 can automatically reset when sliding on the back of the teeth of the ratchet 3, so that the stop pawl 4 and the ratchet 3 always maintain contact, which not only ensures that the intermittent motion of the ratchet 3 can proceed smoothly, but also prevents the ratchet 3 from sliding when it does not need to rotate.
[0021] A connecting column 8 is formed on the stop pawl 4, and the connecting column 8 is laterally located on the side of the stop pawl 4, and the stop pawl 4 is hinged to the outer side of the base 1 through the connecting column 8. In this embodiment, by providing the connecting column 8, the stop pawl 4 can slide more smoothly on the back of the teeth of the ratchet 3, and will not slip out of the tooth groove of the ratchet 3 during work, thereby affecting the normal cooperation between the stop pawl 4 and the ratchet 3, effectively improving the stability of this embodiment.
[0022] A keyway 9 is formed transversely on the side of the ratchet 3, and the keyway 9 completely penetrates the ratchet 3, and the keyway 9 is connected to the center hole of the ratchet 3. A first flat key 10 is formed transversely on the outer surface of one end of the rotating cylinder 2, and the first flat key 10 rotates synchronously with the rotating cylinder 2, and the first flat key 10 is plug-fitted into the keyway 9. In this embodiment, the first flat key 10 and the keyway 9 cooperate with each other, so that the torque when the driving member 5 drives the rotating cylinder 2 can be better transmitted to the ratchet 3, thereby driving the ratchet 3 to rotate synchronously, which effectively improves the practicality of this embodiment.
[0023] A limit rod 11 is formed on the base 1, and the limit rod 11 is located laterally inside the base 1, and the limit rod 11 is located above the rotating drum 2. A card slot 12 is formed on the outer surface of the limit rod 11, and the card slot 12 is recessed inwardly, and the card slot 12 vertically passes through the limit rod 11. In this embodiment, by providing the limit rod 11, the rotation range of the material can be limited when the driving member 5 drives the rotating drum 2 together with the ratchet 3 to rotate for unloading or winding the material, preventing the material from flying out and injuring nearby personnel due to excessive speed during the rotation process, and the card slot 12 can be provided to clamp and limit the end of the material, so that the rolled or remaining rolled material on the rotating drum 2 is always in a tensioned state, which can effectively prevent the rolled or remaining rolled material on the rotating drum 2 from becoming loose and messy, thereby facilitating the next winding or unloading work.
[0024] A rocker 13 is provided between the ratchet 3 and the rotating drum 2, and the rocker 13 is inserted into the center hole of the ratchet 3 and contacts the end surface of the rotating drum 2, and the rocker 13 drives the ratchet 3 to rotate together with the rotating drum 2 on the base 1, and a second flat key 14 is horizontally formed on the outer surface of one end of the rocker 13, and the second flat key 14 rotates synchronously with the rocker 13, and the second flat key 14 is inserted into the keyway 9. In this embodiment, by providing the rocker 13, the staff can choose whether to manually drive the rocker 13 to drive the ratchet 3 and the rotating drum 2 to wind and unwind the material or to drive the rotating drum 2 together with the ratchet 3 to wind and unwind the material through the driving member 5, which effectively improves the practicality of this embodiment, and through the The two flat keys 14 cooperate with the key slots 9 so that the torque when the rocker 13 drives the ratchet 3 can be better transmitted to the rotating drum 2, thereby driving the ratchet 3 to rotate synchronously, further improving the practicality of this embodiment. In addition, in this embodiment, the direction in which the rocker 13 drives the ratchet 3 and the rotating drum 2 to wind and unwind is consistent with the direction in which the driving member 5 drives the rotating drum 2 together with the ratchet 3 to wind and unwind, and when the rocker 13 drives the ratchet 3 and the rotating drum 2 to wind and unwind, the driving member 5 is not powered but will rotate synchronously under the drive of the rotating drum 2, and when the driving member 5 drives the rotating drum 2 together with the ratchet 3 to wind and unwind, the rocker 13 will rotate synchronously under the drive of the ratchet 3.
[0025] The above embodiments are merely explanations of the present application and are not limitations of the present application. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, as long as they are within the scope of the claims of the present application, they are protected by the patent law.
Claims
1. An automatic unwinding machine, characterized in that: The cam is provided with a plurality of teeth, and the cam is provided with a plurality of teeth to rotate relative to each other ...
2. The automatic unwinding machine according to claim 1, characterized in that: An L-shaped bracket is provided on the side of the base, and a double-ear extension spring is provided between the L-shaped bracket and the stopping pawl, and the two ends of the double-ear extension spring are elastically connected to the L-shaped bracket and the top of the stopping pawl respectively.
3. The automatic unwinding machine according to claim 1, characterized in that: A connecting column is formed on the stopping pawl, and the connecting column is laterally located at the side of the stopping pawl, and the stopping pawl is hinged to the outer side of the base through the connecting column.
4. The automatic unwinding machine according to claim 1, characterized in that: A keyway is formed laterally on the side of the ratchet, and the keyway completely penetrates the ratchet, and the keyway is connected to the center hole of the ratchet; a first flat key is formed laterally on the outer surface of one end of the rotating cylinder, and the first flat key rotates synchronously with the rotating cylinder, and the first flat key is inserted into the keyway.
5. The automatic unwinding machine according to claim 1, characterized in that: A limiting rod is formed on the base, and the limiting rod is laterally located inside the base, and the limiting rod is located above the rotating cylinder.
6. The automatic unwinding machine according to claim 5, characterized in that: A clamping groove is formed on the outer surface of the limiting rod, and the clamping groove is concave inward and vertically passes through the limiting rod.
7. The automatic unwinding machine according to claim 4, characterized in that: A rocker is provided between the ratchet and the rotating cylinder, and the rocker is inserted into the center hole of the ratchet and contacts the end surface of the rotating cylinder, and the rocker drives the ratchet and the rotating cylinder to rotate on the base, and a second flat key is laterally formed on the outer surface of one end of the rocker, and the second flat key rotates synchronously with the rocker, and the second flat key is inserted into the keyway.