Web buffer release mechanism for a paper mat machine
Patent Information
- Application Number
- CN202522662655.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-15
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-15
AI Technical Summary
Traditional paper pad machines are prone to tearing or tangling of the roll material during startup and shutdown due to their feeding devices. Excessive friction also leads to wear and tear on parts. They have a limited range of applications and are costly.
Design a roll material buffer release mechanism including an unwinding shaft, a damping element, and a swingable tensioning arm. By swinging the tensioning arm, the separation and contact between the damping element and the unwinding shaft are controlled, so as to realize the slow start and fast stop of the roll material consumable. Combined with a friction ring, a support ring, and a limit ring, the friction resistance is reduced.
It effectively avoids the risk of tearing of roll consumables when starting the paper pad machine and the scattering when stopping, reduces friction, extends the life of parts, expands the scope of application, and reduces costs.
Smart Images
Figure CN224929971U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a roll material buffer release mechanism for a paper pad machine. Background Technology
[0002] A paper padding machine is a packaging device used to process paper into paper pads to fill packaging boxes, providing cushioning and shock absorption to protect products from damage during transportation. The roll of consumable material is placed on the unwinding shaft of the unwinding device, and the starting end of the roll of consumable material enters the paper padding machine. When the paper padding machine starts, the consumable material cannot rotate instantly due to its own inertia, and the consumable material (paper) is stretched instantly, posing a risk of tearing. When the paper padding machine stops, the consumable material cannot stop instantly due to its own inertia, and the consumable material (paper) is over-released, posing a risk of scattering and knotting.
[0003] Traditional feeding devices used with paper pad machines lack a buffer mechanism and rely on the load-bearing capacity of the consumable material itself when tensioned to avoid the risk of tearing. This places high demands on the consumable material, resulting in higher costs and a limited range of applicable consumable materials for paper pad machines.
[0004] Traditional feeding devices used with paper pad machines achieve height eccentricity between the feeding shaft and the paper tube of the paper consumable by reducing the diameter of the feeding shaft. They rely on the weight of the paper consumable itself to overcome the forward rotational energy and avoid overfeeding, but they cannot stop instantly. At the same time, when the paper consumable is used to a small roll, its own weight is insufficient to overcome the forward rotational energy.
[0005] In traditional paper pad machines, the unwinding shafts of some unwinding devices rub directly against the supporting steel at both ends, resulting in high friction, severe wear of the unwinding shaft, and short lifespan of parts. Some unwinding devices install plastic support blocks on the supporting steel to reduce friction, but this also reduces the damping of the unwinding shaft, making the over-unwinding prevention effect ineffective.
[0006] Traditional feeding devices used with paper pad machines employ rollers to dampen the outer cylindrical surface of the rolled material, thus preventing overfeeding. However, this roller damping also increases the resistance to feeding the rolled material during startup, raising the risk of the material tearing.
[0007] Therefore, overcoming the aforementioned technical deficiencies is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0008] The purpose of this invention is to provide a roll material buffer release mechanism for a paper pad machine to solve at least one of the above-mentioned technical problems.
[0009] According to one aspect of the present invention, a roll buffer release mechanism for a paper pad machine is provided, comprising:
[0010] Unwinding shaft used to carry coiled consumables;
[0011] Damping element, located on the side of the unwinding shaft; and
[0012] The device includes two swingable tensioning arms. Each tensioning arm has a tensioning shaft at its first end, and the first ends of the two tensioning arms are connected by the tensioning shaft.
[0013] When the first end of the tensioning swing arm swings up and down, the second end of the tensioning swing arm can drive the damping element to gradually move away from the unwinding shaft until the damping element separates from the unwinding shaft, or the damping element gradually moves closer to the unwinding shaft until the damping element presses against the unwinding shaft.
[0014] This utility model discloses a roll material buffer release mechanism for a paper pad machine. The paper roll of consumable material is mounted on the unwinding shaft. The starting end of the consumable material passes over the tensioning shaft and then over the guide shaft on the paper pad machine before entering the machine. When the paper pad machine starts, under the pulling force of the machine, the tensioning shaft on the first end of the tensioning swing arm swings upward. As the tensioning shaft swings upward, the second end of the tensioning swing arm drives the damping element to gradually move away from the unwinding shaft until the damping element separates from the unwinding shaft. The resistance of the damping element to the unwinding shaft is gradually released, thus achieving a slow start-up of the unwinding of the consumable material. This avoids the risk of tearing of the consumable material during the start-up of the paper pad machine. When the paper pad machine stops... When the machine stops working, the pulling force of the paper pad machine on the consumables disappears, and the tension shaft on the first end of the tensioning swing arm swings downward. When the tension shaft swings downward, the second end of the tensioning swing arm can drive the damping element to gradually approach the unwinding shaft until the damping element presses against the unwinding shaft. The damping element presses the unwinding shaft tightly and prevents it from rotating forward, thereby achieving a rapid stop of the unwinding of the roll material consumables. This can prevent the roll material consumables from being over-released. The roll material buffer release mechanism of this utility model can realize the slow start of the roll material consumables when the paper pad machine starts, avoiding the risk of instantaneous tension change and tearing of the consumables. When the paper pad machine stops, the roll material consumables stop unwinding in time, avoiding the consumables from being over-released, scattered and knotted.
[0015] In some embodiments, a drive mechanism is also included. The drive mechanism may include a guide shaft, a guide shaft seat, a damping spring, and a baffle. The guide shaft is inserted into the guide shaft seat and can slide within the guide shaft seat. A damping element is disposed on one end of the guide shaft, and a baffle is disposed on the other end of the guide shaft. The damping spring is sleeved on the guide shaft, with one end of the damping spring abutting against the guide shaft seat and the other end of the damping spring abutting against the baffle. The second end of a tensioning swing arm is located on the side of the baffle.
[0016] Thus, the paper pad machine starts. Under the pulling force of the paper pad machine, the tensioning shaft on the first end of the tensioning swing arm swings upward. When the first end of the tensioning swing arm swings upward, the second end of the tensioning swing arm swings downward around the swing center. The pushing force of the second end of the tensioning swing arm on the baffle gradually decreases. Under the restoring force of the damping spring, the baffle moves away from the unwinding shaft. The baffle drives the guide shaft to move away from the unwinding shaft, and the guide shaft drives the damping component to move away from the unwinding shaft until the damping component separates from the unwinding shaft. The resistance of the damping component to the unwinding shaft is gradually released, thereby realizing the slow start of the unwinding of the roll material consumables, which can avoid the risk of tearing of consumables during the start-up of the paper pad machine. When the pad machine stops working, the pulling force of the paper pad machine on the consumables disappears, and the tensioning swing arm... The tensioning shaft at the first end of the arm swings downward, while the second end of the tensioning arm swings upward around the swing center. The thrust of the second end of the tensioning arm on the baffle gradually increases, pushing the baffle closer to the unwinding shaft. The baffle drives the guide shaft to move closer to the unwinding shaft, which in turn drives the damping element to move closer to the unwinding shaft until the damping element presses against the unwinding shaft. The damping element presses the unwinding shaft firmly, preventing it from rotating forward, thus achieving a rapid stop of the unwinding of the coiled material. This avoids excessive release of the coiled material. The guide shaft seat allows the guide shaft to slide smoothly. The second end of the tensioning arm is linked in real time with the damping element through a pitch-changing mechanism formed by the baffle, damping spring, and guide shaft, which controls the damping magnitude of the damping element on the unwinding shaft in real time, resulting in high sensitivity.
[0017] In some implementations, a thrust bearing may be provided at the second end of a tensioning arm.
[0018] When the first end of the tensioning arm swings up and down, the thrust bearing can drive the damping element to gradually move away from the unwinding shaft until the damping element separates from the unwinding shaft, or the damping element gradually moves closer to the unwinding shaft until the damping element presses against the unwinding shaft.
[0019] Thus, the second end of a tensioning arm can smoothly push the baffle through a thrust bearing. When the second end of the tensioning arm swings downward, it ensures that the thrust on the baffle decreases smoothly, and when the second end of the tensioning arm swings upward, it ensures that the thrust on the baffle increases smoothly.
[0020] In some embodiments, a coil support and a tension spring may also be included, with a tension swing arm hinged to the coil support, one end of the tension spring fixed to the coil support, and the other end of the tension spring located at a position between the first end of the tension swing arm and the hinge position of the tension swing arm.
[0021] Therefore, the roll support provides support for the tensioning swing arm. Under the action of the tension spring, the consumable between the tensioning shaft and the guide shaft on the paper pad machine will be tensioned, realizing the tension of the consumable between the roll and the paper pad machine, avoiding the risk of the consumable scattering and knotting. At the same time, when the paper pad machine starts, the tensioned consumable can be released, which can also realize the slow start of the roll consumable feeding. Under the dual action of the tension spring and the roll consumable, the tensioning swing arm swings up and down.
[0022] In some embodiments, a friction ring may also be included, which is sleeved on the unwinding shaft, and the outer diameter of the friction ring is larger than the inner diameter of the paper tube of the roll material.
[0023] When the first end of the tensioning swing arm swings up and down, the second end of the tensioning swing arm can drive the damping element to gradually move away from the friction ring until the damping element separates from the friction ring, or the damping element gradually moves closer to the friction ring until the damping element presses against the friction ring.
[0024] Therefore, the friction ring can both axially limit the paper tube of the roll material and prevent the damping component from being in direct contact with the unwinding shaft for a long time, thus affecting the service life of the unwinding shaft.
[0025] In some embodiments, the system may further include a coil support, a support ring, and multiple support bearings. The support ring is sleeved on the unwinding shaft. There are two coil supports arranged in parallel. The top of each coil support has a U-shaped groove for accommodating the unwinding shaft. One end of the unwinding shaft is accommodated in the U-shaped groove on one coil support, and the other end is accommodated in the U-shaped groove on the other coil support. The support bearings are located on the inner wall of the coil supports and can rotate on the coil supports. At least two support bearings support a friction ring, and at least two support bearings support a support ring. Two tensioning swing arms are respectively hinged to the two coil supports.
[0026] When the unwinding shaft carries the consumable material, the paper tube of the consumable material is located between the friction ring and the support ring.
[0027] Therefore, the roll support provides load for the tensioning swing arm and the support bearings. At least two support bearings support the friction rings and at least two support bearings support the support rings, thereby supporting the weight of the unwinding shaft and the roll material. When the roll material is unwound, the unwinding shaft drives the support rings and friction rings on it to rotate synchronously. The support rings and friction rings each drive the corresponding support bearings to rotate synchronously. The support bearings can reduce the frictional resistance of the unwinding shaft rotation, enabling high-speed paper feeding of the roll material.
[0028] In some embodiments, the outer ring of the support bearing is provided with a retaining flange that can axially limit the support ring and friction ring.
[0029] Therefore, the flange on the support bearing can axially limit the friction ring and the support ring, preventing the unwinding shaft from deviating to the left or right during the unwinding process.
[0030] In some embodiments, a limiting ring may also be included, which is sleeved on the unwinding shaft, and the outer diameter of the limiting ring is smaller than the inner diameter of the paper tube of the roll material.
[0031] When the unwinding shaft carries the consumable material, the paper tube of the consumable material is located between the friction ring and the limiting ring.
[0032] When the unwinding shaft carries the consumable material, the limiting ring contacts the end of the paper tube of the consumable material to axially limit the paper tube of the consumable material.
[0033] Therefore, the outer diameter of the limiting ring is smaller than the inner diameter of the paper tube of the roll material. This makes it easier to install the paper tube of the roll material on the unwinding shaft from the end where the limiting ring is located. At the same time, when the unwinding shaft is carrying the roll material, under the action of gravity, the top of the limiting ring contacts the top end of the paper tube of the roll material. This allows it to work with the friction ring to limit the left and right ends of the paper tube of the roll material, preventing the roll material from deviating to the left or right during the unwinding process.
[0034] In some embodiments, two damping rings may also be included, which are sleeved on the unwinding shaft. The outer diameter of the damping rings is smaller than the inner diameter of the paper tube of the roll material.
[0035] When the unwinding shaft carries the roll material, the damping ring is located in the paper tube of the roll material and the top of the paper tube of the roll material is in contact with the top of the damping ring.
[0036] Therefore, the outer diameter of the damping ring is smaller than the inner diameter of the paper tube of the roll material, which facilitates the installation of the roll material. The damping ring can increase the friction force on the rotation of the paper tube of the roll material, and when the paper pad machine stops, it can further realize the function of quickly stopping the feeding of the roll material.
[0037] In some embodiments, a rotatable bushing may be fitted onto the tensioning shaft.
[0038] Therefore, the bushing can rotate around the tensioning shaft, and the bushing can effectively reduce the frictional resistance when the consumables are feeding paper. Attached Figure Description
[0039] Figure 1 This is a schematic diagram of the structure of a roll buffer release mechanism for a paper pad machine according to one embodiment of the present invention;
[0040] Figure 2 for Figure 1 An enlarged structural diagram of point A in the coil buffer release mechanism shown;
[0041] Figure 3 for Figure 1 The diagram shows the structure of the coil buffer release mechanism after the tensioning swing arm swings upward.
[0042] Figure 4 for Figure 3 A magnified schematic diagram of point B in the coil buffer release mechanism shown;
[0043] Figure 5 for Figure 1 The diagram shows the structure of the unwinding shaft, friction ring, damping ring, support ring, limiting ring, and support bearing in the coil buffer release mechanism.
[0044] Figure 6 for Figure 1 The diagram shows the usage status of the roll buffer release mechanism connected to the paper pad machine.
[0045] Figure 7 for Figure 3 The diagram shows the usage status of the roll buffer release mechanism connected to the paper pad machine. Detailed Implementation
[0046] 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0047] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.
[0048] Figures 1 to 5 The diagram schematically illustrates the structure of a roll buffer release mechanism for a paper pad machine according to one embodiment of the present invention.
[0049] refer to Figures 1 to 5 A roll buffer release mechanism for a paper pad machine includes an unwinding shaft 1, a damping element 2, and a tensioning swing arm 3. Furthermore, the roll buffer release mechanism may also include a drive mechanism, a roll support 5, a tensioning spring 6, a friction ring 7, a support ring 8, a support bearing 9, a limiting ring 10, and a damping ring 11.
[0050] refer to Figures 1 to 4There are two roll material supports 5, which are fixed on the base 100 in parallel. The top of the roll material support 5 is formed with a U-shaped groove 51. One end of the unwinding shaft 1 is accommodated in the U-shaped groove 51 on one roll material support 5, and the other end of the unwinding shaft 1 is accommodated in the U-shaped groove 51 on the other roll material support 5. The unwinding shaft 1 does not contact the U-shaped groove 51 to avoid the friction of the U-shaped groove 51 on the unwinding shaft 1 affecting the rotation of the unwinding shaft 1. The unwinding shaft 1 is used to carry the roll material consumables. The diameter of the unwinding shaft 1 is smaller than the inner diameter of the paper tube of the roll material consumables.
[0051] refer to Figures 1 to 5 The friction ring 7 is fitted on the unwinding shaft 1. The friction ring 7 is fixed on the unwinding shaft 1 and rotates synchronously with the unwinding shaft 1. The outer diameter of the friction ring 7 is larger than the inner diameter of the paper tube of the roll material. The friction ring 7 can both axially limit the paper tube of the roll material and prevent the damping component 2 from directly contacting the unwinding shaft 1 for a long time, thus affecting the service life of the unwinding shaft 1.
[0052] refer to Figures 1 to 5 At least two support bearings 9 support the friction ring 7. In this embodiment, there are three support bearings 9 supporting the friction ring 7, with two support bearings 9 located below the friction ring 7 and one support bearing 9 located to the side of the friction ring 7. The outer rings of the three support bearings 9 are in contact with the friction ring 7. All three support bearings 9 are installed on the inner wall of the roll support 5. The three support bearings 9 can rotate on the roll support 5. If a shaft component is fixed on the roll support 5, the inner ring of the support bearing 9 is fitted on the shaft component. The support bearing 9 can rotate on the roll support 5 with the shaft component as the center. When the roll material is unloaded, the unwinding shaft 1 drives the friction ring 7 to rotate synchronously. The friction ring 7 drives the three support bearings 9 to rotate synchronously. These three support bearings 9 can reduce the frictional resistance of the friction ring 7 rotation, thereby reducing the frictional resistance of the unwinding shaft 1 rotation and realizing high-speed paper feeding of the roll material.
[0053] refer to Figure 5 A retaining flange 91 is formed on the outer ring of the support bearing 9 used to support the friction ring 7. The retaining flange 91 can axially limit the friction ring 7 and prevent the unwinding shaft 1 from deviating left or right during the unwinding process. In this embodiment, the support bearing 9 is a flanged bearing with a retaining flange to adapt to the friction ring 7 without a retaining flange. In other embodiments, the support bearing 9 can also be a bearing without a retaining flange to adapt to the friction ring 7 with a retaining flange, or the support bearing 9 used to support the friction ring 7 can be composed of three bearings of different sizes axially stacked to adapt to the friction ring 7 without a retaining flange.
[0054] refer to Figures 1 to 5 The support ring 8 is sleeved on the unwinding shaft 1. The support ring 8 is fixed on the unwinding shaft 1 and rotates synchronously with the unwinding shaft 1. The support ring 8 and the friction ring 7 are located at the two ends of the unwinding shaft 1, respectively. The outer diameter of the support ring 8 is smaller than the inner diameter of the paper tube of the roll material consumable.
[0055] refer to Figures 1 to 5 At least two support bearings 9 support the support ring 8. In this embodiment, there are two support bearings 9 supporting the support ring 8. The two support bearings 9 are located below the support ring 8, and the outer rings of the two support bearings 9 are in contact with the support ring 8. Both support bearings 9 are installed on the inner wall of the roll support 5. The two support bearings 9 can rotate on the roll support 5. If a shaft component is fixed on the roll support 5, the inner ring of the support bearing 9 is sleeved on the shaft component. The support bearing 9 can rotate on the roll support 5 with the shaft component as the center. When the roll material is unloaded, the unwinding shaft 1 drives the support ring 8 to rotate synchronously. The support ring 8 drives the two support bearings 9 to rotate synchronously. The two support bearings 9 can reduce the frictional resistance of the rotation of the support ring 8, thereby reducing the frictional resistance of the rotation of the unwinding shaft 1 and realizing high-speed paper feeding of the roll material.
[0056] refer to Figure 5 The outer ring of the support bearing 9, which supports the support ring 8, is formed with a retaining flange 91. The retaining flange 91 can axially limit the support ring 8 and prevent the unwinding shaft 1 from deviating left or right during the unwinding process. In this embodiment, the support bearing 9 is a flanged bearing with a retaining flange to adapt to the support ring 8 without a retaining flange. In other embodiments, the support bearing 9 can also be a bearing without a retaining flange to adapt to the support ring 8 with a retaining flange, or the support bearing 9 used to support the support ring 8 can be composed of three bearings of different sizes axially stacked to adapt to the support ring 8 without a retaining flange.
[0057] refer to Figures 1 to 5 Two roll supports 5 provide support for five support bearings 9, thereby supporting the weight of the unwinding shaft 1 and the roll material. When the roll material is unwound, the unwinding shaft 1 drives the support ring 8 and friction ring 7 on it to rotate synchronously. The support ring 8 and friction ring 7 each drive the corresponding support bearing 9 to rotate synchronously. The support bearings 9 can reduce the frictional resistance of the unwinding shaft 1, realizing high-speed paper feeding of the roll material.
[0058] refer to Figure 1 , Figure 3 and Figure 5A limiting ring 10 is fitted onto the unwinding shaft 1. The limiting ring 10 is fixed to the unwinding shaft 1 and rotates synchronously with the unwinding shaft 1. The outer diameter of the limiting ring 10 is smaller than the inner diameter of the paper tube of the roll material, which facilitates the installation of the paper tube of the roll material onto the unwinding shaft 1 from the end where the limiting ring 10 is located. The outer diameter of the limiting ring 10 is larger than the inner diameter of the support ring 8. The limiting ring 10 is located between the support ring 8 and the friction ring 7. The limiting ring 10 and the support ring 8 abut together axially upwards. When the unwinding shaft 1 carries the roll material, due to the original weight of the roll material itself... Because the limiting ring 10 contacts the end of the paper tube of the roll material to axially limit the paper tube of the roll material, when the unwinding shaft 1 carries the roll material, the paper tube of the roll material is located between the friction ring 7 and the limiting ring 10. When the unwinding shaft 1 carries the roll material, under the action of gravity, the top of the limiting ring 10 contacts the top end of the paper tube of the roll material, so that the limiting ring 10 and the friction ring 7 can jointly limit the paper tube of the roll material at both ends, preventing the roll material from deviating to the left or right during the unwinding process.
[0059] refer to Figures 1 to 5 Two damping rings 11 are fitted onto the unwinding shaft 1. The damping rings 11 are fixed on the unwinding shaft 1 and rotate synchronously with the unwinding shaft 1. The two damping rings 11 are located between the friction ring 7 and the limiting ring 10. One damping ring 11 abuts axially with the friction ring 7, and the other damping ring 11 abuts axially with the limiting ring 10. The outer diameter of the damping ring 11 is smaller than the inner diameter of the paper tube of the roll material, and the outer diameter of the damping ring 11 is also smaller than the outer diameter of the limiting ring 10. When the unwinding shaft 1 carries the roll material, the damping ring 11 is located in the paper tube of the roll material, and the inner top of the paper tube of the roll material contacts the top of the damping ring 11. The outer diameter of the damping ring 11 is smaller than the inner diameter of the paper tube of the roll material, which facilitates the installation of the roll material. The damping ring 11 can increase the friction force on the rotation of the paper tube of the roll material. When the paper pad machine stops, it can realize the function of quickly stopping the unwinding of the roll material.
[0060] In this embodiment, the damping ring 11 is made of a soft, elastic, and wear-resistant material, such as polyurethane, rubber, silicone, or other plastic materials. In this embodiment, elastic polyurethane material is used.
[0061] refer to Figures 1 to 4 The damping element 2 is located on the side of the unwinding shaft 1. The drive mechanism includes a guide shaft 41, a guide shaft seat 42, a damping spring 43, and a baffle 44. The guide shaft 41 is inserted into the guide shaft seat 42 and can slide in the guide shaft seat 42. The guide shaft seat 42 is fixed on one of the roll supports 5. The damping element 2 is fixed on one end of the guide shaft 41, and the baffle 44 is fixed on the other end of the guide shaft 41. The damping spring 43 is sleeved on the guide shaft 41. One end of the damping spring 43 abuts against the guide shaft seat 42, and the other end of the damping spring 43 abuts against the baffle 44.
[0062] refer to Figure 2and Figure 4 In this embodiment, there are two guide shafts 41 and two damping springs 43. The two guide shafts 41 are arranged in parallel, and the two damping springs 43 are respectively sleeved on the two guide shafts 41. The two guide shafts 41 can ensure that the damping element 2 moves smoothly towards or away from the unwinding shaft 1. In other embodiments, as needed, the number of guide shafts 41 and damping springs 43 can also be one or more (including three), ensuring that each guide shaft 41 is equipped with one damping spring 43.
[0063] refer to Figure 2 A limiting plate 411 can be fixed on the guide shaft 41. The limiting plate 411 can limit the distance of the damping element 2 away from the friction ring 7, so as to prevent the damping element 2 from moving too far away from the friction ring 7 during the process of moving away from the friction ring 7, which would cause the sensitivity of the tensioning swing arm 3 and the damping element 2 to decrease.
[0064] The damping element 2 is made of a soft, elastic, and wear-resistant material, such as polyurethane, rubber, or silicone. In this embodiment, elastic polyurethane is used. The damping spring 43 can be an elastic element such as a compression spring, coil spring, or sheet spring. In this embodiment, a compression spring is used.
[0065] refer to Figure 1 The right end of the tensioning arm 3 is the first end, and the left end of the tensioning arm 3 is the second end.
[0066] refer to Figures 1 to 4 There are two tensioning swing arms 3, each hinged to one of the two coil supports 5 via a hinge shaft 301. The tensioning swing arms 3 can swing on the coil supports 5. A tensioning shaft 31 is installed on the first end of each tensioning swing arm 3, meaning the first ends of the two tensioning swing arms 3 are connected via the tensioning shaft 31. The two tensioning swing arms 3 can swing synchronously on the coil supports 5. The second end of one tensioning swing arm 3 is located on the side of the baffle 44. When the first end of the tensioning swing arm 3 swings up and down, the second end of the tensioning swing arm 3 can drive the damping element 2 to gradually move away from the friction ring 7 on the unwinding shaft 1 until the damping element 2 separates from the friction ring 7 on the unwinding shaft 1, or the damping element 2 gradually moves closer to the friction ring 7 on the unwinding shaft 1 until the damping element 2 presses against the friction ring 7 on the unwinding shaft 1. (Reference) Figure 2 When the paper pad machine starts, under the pulling force of the paper pad machine, the tensioning shaft 31 on the first end of the tensioning swing arm 3 swings upward. When the first end of the tensioning swing arm 3 swings upward, the second end of the tensioning swing arm 31 swings downward around the swing center, i.e., the hinge shaft 301. The pushing force of the second end of the tensioning swing arm 3 on the baffle 44 gradually decreases. Under the restoring force of the damping spring 43, the baffle 44 moves away from the friction ring 7 on the unwinding shaft 1. The baffle 44 drives the guide shaft 41 to move away from the friction ring 7. The guide shaft 41 drives the damping element 2 to move away from the friction ring 7 until the damping element 2 separates from the friction ring 7. Figure 4 As shown in the diagram, the resistance of the damping element 2 to the friction ring 7 is gradually released, thereby achieving a slow start-up of the roll material feeding, which can avoid the risk of tearing of the consumables during the start-up of the paper pad machine; Reference Figure 4 When the padding machine stops working, the pulling force of the paper padding machine on the consumables disappears, the tensioning shaft 31 on the first end of the tensioning swing arm 3 swings downward, and the second end of the tensioning swing arm 3 swings upward about the swing center, i.e., the hinge shaft 301. The pushing force of the second end of the tensioning swing arm 3 on the baffle 44 gradually increases. The second end of the tensioning swing arm 3 pushes the baffle 44 to move closer to the friction ring 7 on the unwinding shaft 1. The baffle 44 drives the guide shaft 41 to move closer to the friction ring 7. The guide shaft 41 drives the damping element 2. Move towards the friction ring 7 until the damping element 2 presses against the friction ring 7. The damping element 2 presses the friction ring 7 tightly and prevents it from rotating forward, thereby achieving a rapid stop of the unloading of the coiled material. This can prevent the coiled material from being over-released. The guide shaft seat 42 can make the guide shaft 41 slide smoothly. The second end of the tensioning swing arm 3 is linked with the damping element 2 in real time through the pitch mechanism formed by the baffle 44, the damping spring 43, and the guide shaft 41. This allows for real-time control of the damping magnitude of the damping element 2 on the friction ring 7, resulting in high sensitivity.
[0067] refer to Figures 1 to 4 A thrust bearing 32 is installed on the second end of a tensioning swing arm 3. The thrust bearing 32 is located on the side of the baffle 44. The outer ring of the thrust bearing 32 can rotate on the second end of the tensioning swing arm 3. When the first end of the tensioning swing arm 3 swings upward, the thrust bearing 32 can drive the damping element 2 to gradually move away from the friction ring 7 on the unwinding shaft 1 through the pitch-changing mechanism formed by the baffle 44, the damping spring 43, and the guide shaft 41 until the damping element 2 separates from the friction ring 7. Figure 4 As shown in the diagram, when the first end of the tensioning swing arm 3 swings downward, the thrust bearing 32 can drive the damping element 2 to gradually approach the friction ring 7 on the unwinding shaft 1 through the pitch-changing mechanism formed by the baffle 44, damping spring 43, and guide shaft 41 until the damping element 2 presses against the friction ring 7; the second end of the tensioning swing arm 3 can smoothly push the baffle 44 through the thrust bearing 32. When the second end of the tensioning swing arm 3 swings downward, it ensures that the thrust on the baffle 44 decreases smoothly, and when the second end of the tensioning swing arm 3 swings upward, it ensures that the thrust on the baffle 44 increases smoothly.
[0068] The thrust bearing 32 can be a rolling bearing, a sliding bearing, a cam, a cylindrical rod, a sheet metal boss, or other structures. In this embodiment, a rolling bearing is used.
[0069] refer to Figure 1 and Figure 3One end of the tension spring 6 is fixed to the coil support 5, and the other end of the tension spring 6 is fixed to the tension swing arm 3 between the first end of the tension swing arm 3 and the hinge shaft 301. Multiple holes can be formed on the tension swing arm 3, and the end of the tension spring 6 is hung in one of these holes. The position of the tension spring 6 on the tension swing arm 3 is adjustable according to tension requirements. There are two tension springs 6, and each of the two tension swing arms 3 is mounted in the same manner via a tension spring 6. On the two roll supports 5; the two roll supports 5 can provide support for the tensioning swing arms 3. Under the action of the tensioning spring 6, the consumable between the tensioning shaft 31 and the guide shaft on the paper pad machine will be tensioned, realizing the tension of the consumable between the roll and the paper pad machine, avoiding the risk of the consumable scattering and knotting. At the same time, when the paper pad machine starts, the tensioned consumable can be released, and the roll consumable can also be slowly started to unload. Under the dual action of the tensioning spring 6 and the roll consumable, the two tensioning swing arms 3 swing up and down.
[0070] refer to Figure 1 A rotatable bushing 33 is fitted on the tension shaft 31. The bushing 33 can rotate around the tension shaft 31 and can effectively reduce the frictional resistance when the consumables are feeding paper.
[0071] refer to Figure 6 and Figure 7 The paper tube of the roll material consumable 200 is mounted on the unwinding shaft 1. The paper pad machine 300 is mounted on the base 100 via the bracket 101. A horizontal frame 102 is mounted on the bracket 101, and an auxiliary guide shaft is mounted on the frame 102. The paper tube of the roll material consumable 200 is located at... Figure 2 Between the friction ring 7 and the limiting ring 10 shown, the starting end of the coil consumable 200 first passes around... Figure 1 The bushing 33 shown then passes around the auxiliary guide shaft on the frame 102, and finally passes around the guide shaft 302 on the paper pad machine 300 to enter the paper pad machine 300.
[0072] refer to Figures 1 to 7 When the paper pad machine 300 starts, under the pulling force of the paper pad machine 300, the tensioning shafts 31 on the first ends of the two tensioning swing arms 3 swing upward. When the tensioning shafts 31 swing upward, the thrust bearings 32 on the tensioning swing arms 3 swing downward. The thrust of the thrust bearings 32 on the baffle 44 gradually decreases. Under the restoring force of the damping spring 43, the damping element 2 moves away from the friction ring 7 until the damping element 2 separates from the friction ring 7. Figure 4(As shown in the diagram), the resistance of the damping element 2 to the friction ring 7 is gradually released, thereby achieving a slow start-up of the roll material consumable 200. This avoids the risk of tearing of the consumable 201 during the start-up of the paper pad machine 300. When the paper pad machine 300 stops working, the pulling force of the paper pad machine 300 on the consumable 201 disappears, and the tensioning shaft 31 on the first end of the two tensioning swing arms 3 swings downward. When the tensioning shaft 31 swings downward, the thrust bearing 32 on the tensioning swing arm 3 swings upward. As the thrust of baffle 44 gradually increases, damping element 2 moves closer to friction ring 7 until it presses against friction ring 7, preventing it from rotating forward. This achieves a rapid stop in the unloading of the roll material 200, preventing excessive release. Additionally, under the action of tension spring 6, the material 201 between tension shaft 31 and guide shaft 302 on paper pad machine 300 is tensioned, achieving tension between the roll material and paper pad machine 300. The tensioning of consumable 201 prevents the risk of it becoming tangled or knotted. Simultaneously, when the paper pad machine 300 starts, the tensioned consumable 201 can be released, allowing for a slow start-up of the unwinding of the roll consumable 200. The damping ring 11 increases the frictional force on the rotating paper tube of the roll consumable 200. When the paper pad machine 300 stops, it further facilitates a rapid stop of the unwinding of the roll consumable 200. The support bearing 9 reduces the frictional resistance of the unwinding shaft 1, ensuring smooth rotation of the roll consumable. The high-speed paper feeding of consumable 200; the roll material buffer release mechanism of this utility model can realize the slow start of the roll material consumable when the paper pad machine starts, avoiding the risk of instantaneous tension change and tearing of the consumable. When the paper pad machine stops, the roll material consumable stops feeding in time, avoiding the consumable from being over-fed and scattered. The thrust bearing 32 on the tension swing arm 3 is linked with the damping component 2 in real time through the pitch change mechanism formed by the baffle 44, damping spring 43, and guide shaft 41, which controls the damping magnitude of the damping component 2 on the friction ring 7 in real time, with high sensitivity.
[0073] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.
Claims
1. A roll material buffer release mechanism for a paper pad machine, characterized in that, include: Unwinding shaft used to carry coiled consumables; A damping element located on the side of the unwinding shaft; and The device includes two swingable tensioning arms. Each tensioning arm has a tensioning shaft at its first end, and the first ends of the two tensioning arms are connected by the tensioning shaft. When the first end of the tensioning swing arm swings up and down, the second end of the tensioning swing arm can drive the damping element to gradually move away from the unwinding shaft until the damping element separates from the unwinding shaft, or the damping element gradually moves closer to the unwinding shaft until the damping element presses against the unwinding shaft.
2. The roll material buffer release mechanism according to claim 1, characterized in that, It also includes a drive mechanism, which includes a guide shaft, a guide shaft seat, a damping spring, and a baffle. The guide shaft passes through the guide shaft seat and can slide within the guide shaft seat. A damping element is provided on one end of the guide shaft, and a baffle is provided on the other end of the guide shaft. The damping spring is sleeved on the guide shaft, with one end of the damping spring abutting against the guide shaft seat and the other end of the damping spring abutting against the baffle. The second end of a tensioning swing arm is located on the side of the baffle.
3. The roll material buffer release mechanism according to claim 2, characterized in that, A thrust bearing is provided at the second end of one of the tensioning swing arms. When the first end of the tensioning arm swings up and down, the thrust bearing can drive the damping element to gradually move away from the unwinding shaft until the damping element separates from the unwinding shaft, or the damping element gradually moves closer to the unwinding shaft until the damping element presses against the unwinding shaft.
4. The roll material buffer release mechanism according to claim 1, characterized in that, It also includes a coil support and a tension spring. The tension swing arm is hinged to the coil support. One end of the tension spring is fixed to the coil support, and the other end of the tension spring is located between the first end of the tension swing arm and the hinge position of the tension swing arm.
5. The roll material buffer release mechanism according to claim 1, characterized in that, It also includes a friction ring, which is sleeved on the unwinding shaft. The outer diameter of the friction ring is larger than the inner diameter of the paper tube of the roll material. When the first end of the tensioning swing arm swings up and down, the second end of the tensioning swing arm can drive the damping element to gradually move away from the friction ring until the damping element separates from the friction ring, or the damping element gradually moves closer to the friction ring until the damping element presses against the friction ring.
6. The roll material buffer release mechanism according to claim 5, characterized in that, It also includes a coil support, a support ring, and multiple support bearings. The support ring is sleeved on the unwinding shaft. There are two coil supports arranged in parallel. The top of each coil support has a U-shaped groove for accommodating the unwinding shaft. One end of the unwinding shaft is accommodated in the U-shaped groove on one coil support, and the other end is accommodated in the U-shaped groove on the other coil support. The support bearings are located on the inner wall of the coil supports and can rotate on the coil supports. At least two support bearings support a friction ring, and at least two support bearings support a support ring. Two tensioning swing arms are respectively hinged to the two coil supports. When the unwinding shaft carries the consumable material, the paper tube of the consumable material is located between the friction ring and the support ring.
7. The roll material buffer release mechanism according to claim 6, characterized in that, The outer ring of the support bearing is provided with a retaining edge that can axially limit the support ring and friction ring.
8. The roll material buffer release mechanism according to claim 5, characterized in that, It also includes a limiting ring, which is sleeved on the unwinding shaft. The outer diameter of the limiting ring is smaller than the inner diameter of the paper tube of the roll material. When the unwinding shaft carries the consumable material, the paper tube of the consumable material is located between the friction ring and the limiting ring. When the unwinding shaft carries the consumable material, the limiting ring contacts the end of the paper tube of the consumable material to axially limit the paper tube of the consumable material.
9. The roll buffer release mechanism according to any one of claims 1 to 8, characterized in that, It also includes two damping rings, which are sleeved on the unwinding shaft. The outer diameter of the damping rings is smaller than the inner diameter of the paper tube of the roll material. When the unwinding shaft carries the roll material, the damping ring is located in the paper tube of the roll material and the top of the paper tube of the roll material is in contact with the top of the damping ring.
10. The roll buffer release mechanism according to any one of claims 1 to 8, characterized in that, A rotatable bushing is fitted onto the tensioning shaft.