Flexible pinch roller feeding device
The flexible pressure roller feeding device solves the problem of unstable traction force when facing packaging materials of different thicknesses in traditional cable wrapping machines through the design of the central shaft and elastic components. It realizes automatic adjustment and stable clamping force, thereby improving production efficiency and equipment reliability.
Patent Information
- Application Number
- CN202423029861.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-09
AI Technical Summary
The traction structure of traditional cable wrapping machines is difficult to control when dealing with wrapping materials of different thicknesses, resulting in unstable traction force or deformation of the wrapping material, which affects production efficiency and equipment life.
The flexible pressure roller feeding device adopts a combination design of central shaft and elastic element, which enables the pressure roller to adapt flexibly to changes in packaging material thickness, providing stable clamping force, and achieves automatic adjustment through pulley drive mechanism to avoid pressure roller jamming.
It achieves automatic adaptation to different packaging material thicknesses without the need for frequent adjustment of the pressure roller position, reducing malfunctions and improving production efficiency and equipment lifespan.
Smart Images
Figure CN223651203U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a cable wrapping device, and more particularly to a flexible pressure roller feeding device. Background Technology
[0002] A cable wrapping machine is a device that wraps insulation material around a core wire to form an insulated cable. A cable wrapping machine generally includes a core wire traction assembly and a insulation material traction assembly. The insulation material traction assembly is a structure that drives the insulation material to wrap around the core wire with constant tension. It has a tape release assembly and a traction structure. The tape release assembly releases the insulation tape, while the traction structure provides traction force to the insulation material through traction wheels, causing the insulation material to move at a constant linear speed. Traditional traction structures have a fixed gap between the traction wheels, determined by the position of the fixed wheel axle. When conveying insulation materials of different thicknesses, different gap adjustments must be made before the equipment starts operating. Because the insulation material is very thin, the gap size is difficult to control. When the gap is too large, the traction force is insufficient, and the insulation material is prone to slippage during operation, resulting in unstable traction and conveying volume. When the gap is too small, although the traction force is sufficient, the insulation material is easily compressed and deformed, affecting the cable quality. Furthermore, when the gap is too small, the bearings of the traction rollers and pressure rollers are subjected to excessive pressure, easily jamming and failing, resulting in a high failure rate, which is detrimental to continuous production and reduces production efficiency. Utility Model Content
[0003] The purpose of this invention is to provide a flexible pressure roller feeding device that does not require frequent adjustment of the pressure roller position, can automatically adapt to the thickness of different packaging materials, reduce the occurrence of failures, and effectively improve production efficiency.
[0004] To achieve the above objectives, the flexible pressure roller feeding device provided by this utility model includes a pressure roller mechanism and a pulley drive mechanism. The pressure roller mechanism includes a wheel seat, a guide roller, a pressure roller, a central shaft, and an elastic element. The guide roller is pivotally connected to the wheel seat, and the central shaft is disposed on the wheel seat and parallel to the central axis of the guide roller. The pressure roller is rotatably disposed on the central shaft. Packaging material passes between the guide roller and the pressure roller. The elastic element is disposed on the wheel seat and presses against the central shaft, so that the pressure roller elastically presses the packaging material against the guide roller with a certain pressure. The pulley drive mechanism drives the guide roller to rotate, thereby pulling the packaging material to move.
[0005] Compared with existing technologies, this invention, by setting a central shaft, allows the pressure roller to be rotatably mounted on the central shaft, and by using an elastic element to press against the central shaft, the pressure roller can elastically press the packaging material against the guide roller. Therefore, it can elastically and automatically adapt to the thickness of the packaging material passing between the pressure roller and the guide roller, and provide corresponding clamping force to the packaging material, eliminating the need for frequent manual adjustments to the position of the pressure roller. Furthermore, the elastic clamping force of the elastic element prevents excessive pressure on the central bearing of the pressure roller, thereby avoiding jamming, reducing malfunctions, and effectively improving production efficiency.
[0006] Preferably, the wheel seat has a receiving groove and positioning grooves on opposite sides of the receiving groove. Both the receiving groove and the positioning grooves are open to the outside of the wheel seat. The pressure roller is received in the receiving groove, and both ends of the central shaft are engaged in the positioning grooves to fix the central shaft circumferentially. By providing the receiving groove, the pressure roller can be quickly aligned with the guide roller. By providing the positioning grooves, and with the pressure roller rotatably mounted on the central shaft, the central shaft can be quickly engaged on the wheel seat, effectively improving the ease of assembly. In addition, the central shaft does not need to rotate around its own central axis, which can prevent sliding friction between the central shaft and the elastic element, thus protecting the central shaft and the elastic element and effectively extending the service life of the parts.
[0007] Preferably, the elastic element is an elastic ring, which is fitted around the outer periphery of the wheel seat and distributed at both ends of the central shaft to press the central shaft against the wheel seat. Since the pulley and wheel seat are coaxially arranged, and the central shaft is located on one side of the wheel seat, using an elastic ring as the elastic element and fitting it around the outer periphery of the wheel seat not only facilitates the assembly of the elastic ring and wheel seat but also simplifies the elastic structure and reduces maintenance costs.
[0008] Specifically, annular grooves are provided on the outer periphery of the wheel seat at both ends of the central shaft, and the elastic ring is housed within the annular grooves. By providing the annular grooves, the elastic ring can be limited, preventing axial movement and detachment from the central shaft, thus ensuring operational stability and reliability.
[0009] Preferably, the elastic element is a spring or an elastic block, respectively disposed at both ends of the central shaft, so as to provide an elastic force that causes the central shaft to press against the wheel seat.
[0010] Preferably, the pulley drive mechanism includes a drive motor, a drive pulley, a driven pulley, and a drive belt. The driven pulley is coaxially fixed to one end of the pulley, and the drive pulley is located at the output end of the drive motor. The drive pulley drives the driven pulley through the drive belt.
[0011] Specifically, the pulley drive mechanism further includes a transmission pulley and a transmission belt. One end of the transmission pulley is provided with a first transmission pulley, and the other end is provided with a second transmission pulley. The transmission belt is arranged between the driving pulley and the first transmission pulley, and the drive belt is arranged between the second transmission pulley and the driven pulley.
[0012] Specifically, the driven pulley and the guide pulley are integrally formed. This allows the driven pulley and guide pulley to be manufactured in one step, reducing assembly errors and improving precision.
[0013] Preferably, the outer circumference of the pulley is provided with an annular mating groove, and the side of the pressure roller closest to the pulley is accommodated within the annular mating groove. This facilitates alignment between the two, improves assembly convenience, and reduces the space occupied between the pulley and the pressure roller, resulting in a more compact and rational structure and a smaller equipment size.
[0014] Preferably, the wheel seat has a through hole extending through both ends, the pulley is disposed within the through hole, a limiting step is provided on the outer side of the middle portion of the wheel seat, and a pressure cap is provided on the front end face of the wheel seat, the pressure cap limiting the central shaft between the pressure cap and the limiting step; the rear end of the wheel seat has an opening slot for accommodating the driven pulley. This allows the central shaft and the pulley to be quickly installed on the wheel seat, making assembly and maintenance more convenient. Attached Figure Description
[0015] Figure 1 This is a perspective view of the off-center pressure roller traction conveyor mechanism of this utility model.
[0016] Figure 2 This is an axial sectional view of the off-center pressure roller traction conveyor mechanism of this utility model.
[0017] Figure 3 This is a side view of the off-center pressure roller traction conveyor mechanism of this utility model.
[0018] Figure 4 This is a perspective view of the flexible pressure roller feeding device of this utility model.
[0019] Figure 5 This is an axial sectional view of the flexible pressure roller feeding device of this utility model.
[0020] Figure 6 This is a side view of the flexible pressure roller feeding device of this utility model.
[0021] Figure 7 This is an axial sectional view of another embodiment of the flexible pressure roller feeding device of this utility model.
[0022] Figure 8 This is an axial sectional view of the third embodiment of the flexible pressure roller feeding device of this utility model.
[0023] Figure 9 This is a state diagram of another winding method for the packaging material of the flexible pressure roller feeding device of this utility model.
[0024] Figure 10 This is a state diagram of the third winding method of the packaging material in the flexible pressure roller feeding device of this utility model. Detailed Implementation
[0025] To explain in detail the technical content, structural features, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.
[0026] like Figures 1 to 3 As shown, the off-center pressure roller traction conveyor mechanism 100 of this utility model includes a flexible pressure roller feeding device 110, a main shaft 120, a bearing seat 130, a guide belt turntable 140, an input roller 150, an output roller 160, and a traction drive mechanism 170. The main shaft 120 is coaxially and rotatably mounted on the bearing seat 130. The guide belt turntable 140 is coaxially fixed on the main shaft 120. The input roller 150 and the output roller 160 are mounted on the guide belt turntable 140, and the input roller 150 and the output roller 160 are arranged symmetrically. The traction drive mechanism 170 drives the main shaft 120 to rotate. The flexible pressure roller feeding device 110 is eccentrically arranged on the guide belt turntable 140. The flexible pressure roller feeding device 110 elastically clamps and pulls the packaging material 900, so that the packaging material 900 is sent out after passing through the main shaft 120, the input roller 150 and the output roller 160.
[0027] Please see Figures 2 to 6The flexible pressure roller feeding device 110 includes a pressure roller mechanism 1 and a pulley drive mechanism 2. The pressure roller mechanism 1 is eccentrically mounted on the guide belt turntable 140 and is used to clamp the packaging material 900. The pulley drive mechanism 2 is used to drive the pressure roller mechanism 1 to rotate, thereby moving the packaging material 900. The pressure roller mechanism 1 includes a wheel seat 11, a guide belt pulley 12, a pressure roller 13, a central shaft 14, and an elastic element 15. The wheel seat 11 is mounted on the guide belt turntable 140. A bearing is provided between the guide belt pulley 12 and the wheel seat 11 so that the guide belt pulley 12 is coaxially pivotally connected to the wheel seat 11. The central shaft 14 is eccentrically mounted on the wheel seat 11, and the central shaft 14 is parallel to the central axis of the guide belt pulley 12. The pressure roller 13 is rotatably mounted on the central shaft 14. The packaging material 900 passes through the gap between the guide belt pulley 12 and the pressure roller 13. The guide roller 12 and the pressure roller 13 together clamp the packaging material 900. The elastic element 15 is disposed on the wheel seat 11 and presses against the central shaft 14, so that the pressure roller 13 elastically presses the packaging material 900 against the guide roller 12 with a certain pressure. The pulley drive mechanism 2 drives the guide roller 12 to rotate, thereby pulling the packaging material 900 to move. By setting the central shaft 14, the pressure roller 13 is rotatably disposed on the central shaft 14, and the elastic element 15 presses against the central shaft 14, so that the pressure roller 13 can elastically press the packaging material 900 against the guide roller 12. Therefore, it can elastically and automatically adapt to the thickness of the packaging material passing between the pressure roller 13 and the guide roller 12 and provide a corresponding clamping force to the packaging material, without the need for frequent manual adjustment of the position of the pressure roller 13.
[0028] Please see again Figure 4 and Figure 5The wheel seat 11 has a receiving groove 11a and positioning grooves 11b on opposite sides of the receiving groove 11a. Both the receiving groove 11a and the positioning grooves 11b are open to the outside of the wheel seat 11. The extending direction of the positioning grooves 11b is parallel to the central axis of the guide roller 12. The pressure roller 13 is received in the receiving groove 11a, and both ends of the central shaft 14 are engaged in the positioning grooves 11b to fix the central shaft 14 circumferentially. Specifically, the cross-section of the receiving groove 11a is square, and the cross-sections of both ends of the central shaft 14 are also square, so that the two can be mutually engaged to prevent rotation around their own central axis. By providing the receiving groove 11a, the pressure roller 13 can be quickly aligned with the guide roller 12. Furthermore, by providing the positioning groove 11b and rotatably mounting the pressure roller 13 on the central shaft 14, the central shaft 14 can be quickly engaged with the wheel seat 11, effectively improving assembly convenience. In addition, the central shaft 14 does not need to rotate around its own central axis, preventing sliding friction between the central shaft 14 and the elastic element 15, thus protecting both the central shaft 14 and the elastic element 15 and effectively extending the service life of the parts.
[0029] Please see again Figure 4 and Figure 5 The elastic element 15 is an elastic ring, which is sleeved around the outer periphery of the wheel seat 11 and distributed at both ends of the central shaft 14 to press the central shaft 14 against the wheel seat 11. Since the pulley 12 is coaxially arranged with the wheel seat 11, and the central shaft 14 is located on one side of the wheel seat 11, using an elastic ring as the elastic element 15 and sleeved around the outer periphery of the wheel seat 11 not only facilitates the assembly of the elastic ring and the wheel seat 11, but also simplifies the elastic structure and reduces maintenance costs. In this embodiment, the elastic ring is a rubber band. By selecting different sizes or types of rubber bands, different amounts of elastic force can be applied to the central shaft 14, which is beneficial for adapting to packaging materials 900 of different thicknesses. An annular groove 11c is provided on the outer periphery of the wheel seat 11 at both ends of the central shaft 14, and the elastic ring is accommodated within the annular groove 11c. By providing the annular groove 11c, the elastic ring can be limited to prevent axial movement and avoid detachment from the central shaft 14, thus ensuring operational stability and reliability. Alternatively, the elastic element 15 can be a compression spring or a tension spring, respectively located at both ends of the central shaft 14, to provide an elastic force that causes the central shaft 14 to press against the wheel seat 11, similar to the function of a rubber band.
[0030] For example Figure 7As shown, in another embodiment, the elastic element can also be an elastic pressure block 15'. The elastic pressure block 15' is mounted on the wheel seat 11' by a bolt 16' and distributed on both sides of the traction wheel 12. The elastic pressure block 15' can be made of elastically deformable rubber to elastically press against the central shaft 14'. Specifically, the elastic pressure block 15' is fixed to one end of the bolt 16', and the bolt 16' is threadedly connected to the mounting plate 111' above the wheel seat 11'. By tightening the bolt 16', the elastic pressure block 15' can be adjusted to press against the central shaft 14', and by utilizing its own elastic deformability, the central shaft 14' has a certain radial movement space, realizing the purpose of automatically adapting the pressure wheel 13' and the guide wheel 12' to the thickness of the packaging material. In addition, as Figure 8 As shown, the elastic pressure block 15' can also be a combination of a rigid pressure block 151' and a compression spring 152'. By placing the compression spring 152' between the rigid pressure block 151' and the mounting plate 111' above the wheel seat 11, and having the compression spring 152' fitted onto the guide rod 153', the rigid pressure block 151' can elastically press against the central shaft 14', thereby allowing the pressure roller 13' and the guide roller 12' to automatically adapt to the thickness of the packaging material, thus achieving the same elastic pressing effect.
[0031] For example Figure 5 As shown, the outer periphery of the guide roller 12 is provided with an annular mating groove 12a, and the side of the pressure roller 13 closest to the guide roller 12 is accommodated in the annular mating groove 12a. This facilitates the alignment of the two, improves the convenience of assembly, and reduces the space occupied between the guide roller 12 and the pressure roller 13, making the structure more compact and reasonable, and reducing the size of the equipment.
[0032] For example Figure 5 As shown, the wheel seat 11 has a through hole 11d extending through both ends. The pulley 12 is disposed within the through hole 11d. A limiting step 11e is provided on the outer side of the middle part of the wheel seat 11. A pressure cap 111 is provided on the end face of the front end of the wheel seat 11. The pressure cap 111 limits the central shaft 14 between the pressure cap 111 and the limiting step 11e. The pressure cap 111 and the end of the pulley 12 are fixedly connected by fixing screws 112. This allows the central shaft 14 and the pulley 12 to be quickly installed on the wheel seat 11, making assembly and maintenance more convenient. The rear end of the wheel seat 11 has an opening slot 11f for accommodating the driven pulley 23.
[0033] Please see Figure 2 and Figure 5The pulley drive mechanism 2 includes a drive motor 21, a driving pulley 22, a driven pulley 23, and a drive belt 24. The driven pulley 23 is coaxially fixed to the end of the pulley 12 away from the pressure roller 13. The driving pulley 22 is located at the output end of the drive motor 21, and the driving pulley 22 drives the driven pulley 23 to rotate via the drive belt 24. Specifically, the pulley drive mechanism 2 also includes a transmission pulley 25 and a transmission belt 26. The transmission pulley 25 is coaxially and rotatably sleeved on the main shaft 120. One end of the transmission pulley 25 is provided with a first transmission pulley 251, and the other end is provided with a second transmission pulley 252. The transmission belt 26 surrounds the driving pulley 22 and the first transmission pulley 251, and the drive belt 24 surrounds the second transmission pulley 252 and the driven pulley 23. Both the driven pulley 23 and the second transmission pulley 252 have teeth on their outer circumferences, and the inner side of the drive belt 24 has teeth that mesh with these teeth. This allows the drive motor 21 to drive the pulley 12 to rotate without affecting its rotation with the guide pulley 140. Furthermore, the tension of the drive belt 24, which drives the pulley 12 to rotate, cancels out the centrifugal force of the pulley 12's rotation, thus reducing or eliminating pressure on the bearing supporting the pulley 12 and extending its service life. The drive motor 21 is a servo motor. Since the flexible pressure roller feeding device 110 is mounted on the guide belt turntable 140 and rotates with it, the transmission pulley 25 and transmission belt 26 allow the transmission pulley 25 to be coaxially and rotatably mounted with the main shaft 120. This allows the drive motor 21, even when mounted outside the main shaft 120, to drive the guide belt pulley 12 via the drive pulley 22, transmission belt 26, transmission pulley 25, drive belt 24, and driven pulley 23, simplifying the structure and making maintenance more convenient. More specifically, the driven pulley 23 and the guide belt pulley 12 are integrally formed. This allows the driven pulley 23 and the guide belt pulley 12 to be machined in one step, reducing assembly errors and improving precision.
[0034] Please see again Figure 3When the flexible pressure roller feeding device 110 is mounted on the guide belt turntable 140, the pressure roller 13 is located between the central axis of the main shaft 120 and the guide belt wheel 12. The center of the guide belt turntable 140 or the main shaft 120, the center of the pressure roller 13, and the center of the guide belt wheel 12 are sequentially aligned on the same straight line. Furthermore, the straight line from the opening to the bottom of the positioning groove 11b is aligned with the straight line from the center of the guide belt turntable 140 to the guide belt wheel 12. Since the pulley 12 is driven by the belt of the pulley drive mechanism 2, the belt of the pulley drive mechanism 2 applies a centripetal force to the pulley 12. The centrifugal force experienced by the pulley 12 during its revolution is opposite to the centripetal force. Furthermore, since the positioning groove 11b is located on the diameter of the pressure roller's revolution, the centrifugal force experienced by the pressure roller 13 during its revolution is also opposite to the centripetal force of the pulley 12. This counteracts the pressure of the belt of the pulley drive mechanism 2, resulting in better pressure on the bearings at both ends of the pulley 12 or a zero-pressure state, preventing damage due to long-term use and pressure, and extending the service life of the equipment. Additionally, during its revolution, the pressure roller 13, under the action of centrifugal force, can move closer to the pulley 12 along the direction of the positioning groove 11b to press against it. The higher the rotation speed of the pulley turntable 140, the greater the centrifugal force, thus increasing the pressure of the pressure roller 13 on the pulley 12, thereby more stably pulling the packaging material.
[0035] For example Figure 2 As shown, the traction drive mechanism 170 includes a traction motor 171, a driving traction wheel 172, a driven traction wheel 173, and a traction belt 174. The output end of the traction motor 171 is connected to the driving traction wheel 172, and the traction motor 171 is a servo motor. The driven traction wheel 173 is fixedly connected to the main shaft 120, and the traction belt 174 surrounds the driving traction wheel 172 and the driven traction wheel 173. By configuring the driving traction wheel 172, the driven traction wheel 173, and the traction belt 174, the traction motor 171 can drive the main shaft 120 and the guide belt turntable 140 to rotate, thereby providing power for the wrapping of the packaging material 900.
[0036] For example Figure 1 and Figure 3As shown, the off-center pressure roller traction feeding mechanism 100 also includes an anti-flipping mechanism 180. The anti-flipping mechanism 180 is disposed on the guide belt turntable 140 and is located before the input roller 150 and after the output roller 160 along the conveying direction of the packaging material 900. This prevents the packaging material 900 from flipping after being conveyed from the main shaft 120, or from flipping before wrapping, ensuring that the packaging material 900 is in a normal state during wrapping, thereby guaranteeing the quality of wire wrapping and achieving a better wrapping effect. Specifically, the guide belt turntable 140 is also provided with a first transition roller 141 and a second transition roller 142. Both the first transition roller 141 and the second transition roller 142 are perpendicular to the central axis of the main shaft 120, and the central axes of the input roller 150 and the output roller 160 are parallel to the central axis of the main shaft 120, respectively. The guide roller turntable 140 has a circular structure. On one side of the central axis of one diameter of the guide roller turntable 140, a first transition roller 141, an anti-flanging mechanism 180, and an input roller 150 are arranged sequentially from the inside to the outside of the guide roller turntable 140. On the other side of the central axis of the same diameter of the guide roller turntable 140, a second transition roller 142, an anti-flanging mechanism 180, and an output roller 160 are arranged sequentially from the inside to the outside of the guide roller turntable 140. On another diameter of the guide roller turntable 140 perpendicular to one of the aforementioned diameters, the flexible pressure roller feeding device 110 is arranged on one side of the central axis of the guide roller turntable 140. The packaging material 900 extends from the conveying channel 121 of the main shaft 120 and passes sequentially through the first transition roller 141, one of the anti-flanging mechanisms 180, the input roller 150, the flexible pressure roller feeding device 110, the output roller 160, the other anti-flanging mechanism 180, and the second transition roller 142. Specifically, the anti-flipping mechanism 180 includes a first anti-flipping wheel 181 and a second anti-flipping wheel 182, the central axes of which are parallel to the central axis of the main shaft 120. The first anti-flipping wheel 181 and the second anti-flipping wheel 182 are rotatably mounted on the guide belt turntable 140, and their central axes are parallel to the central axis of the main shaft 120. The first anti-flipping wheel 181 and the second anti-flipping wheel 182 clamp the packaging material 900. By using the two anti-flipping wheels to adjust and straighten the edges of the packaging material 900, the edges of the packaging material 900 are prevented from flipping due to twisting before and after turning, ensuring the normal edge condition of the packaging material 900.
[0037] For example Figure 1 and Figure 3As shown, the off-center pressure roller traction conveyor mechanism 100 further includes a counterweight block 190 and a counterweight bracket 191. The counterweight block 190 is eccentrically disposed on the guide belt turntable 140 and located on the side opposite to the flexible pressure roller feeding device 110. Specifically, on the other diameter of the guide belt turntable 140 perpendicular to one of the aforementioned diameters, the counterweight bracket 191 and the counterweight block 190 are disposed on the other side of the central axis of the guide belt turntable 140, opposite to the flexible pressure roller feeding device 110. The counterweight block 190 is cylindrical and disposed on the counterweight bracket 191. The distance between the counterweight block 190 and the center of the guide belt turntable 140 is equal to the distance between the flexible pressure roller feeding device 110 and the center of the guide belt turntable 140, and the weight of the counterweight block 190 is equal to or approximately equal to the weight of the pressure roller mechanism 1 of the flexible pressure roller feeding device 110. Because the flexible pressure roller feeding device 110 is eccentrically positioned on the guide belt turntable 140, the centrifugal force experienced by the guide belt turntable 140 during rotation is unbalanced, resulting in unstable rotation and potential wear on the main shaft 120. Therefore, a counterweight 190 is used to balance the centrifugal force of the flexible pressure roller feeding device 110, thereby balancing the forces on the guide belt turntable 140, making its rotation more stable, effectively protecting the main shaft 120, and extending the service life of the equipment. Furthermore, a support rod 192 extends from the counterweight bracket 191, and a guide roller 143 is provided at the front end of the support rod 192. The packaging material 900 passes through the guide roller 143 after being output from the second transition roller 142.
[0038] For example Figure 1 and Figure 3 As shown, in a preferred embodiment, the pressure roller mechanism 1 of the flexible pressure roller feeding device 110 of this application is detachably mounted on the guide belt turntable 140. An adjusting screw 14a is provided between the pressure roller mechanism 1 and the guide belt turntable 140. The guide belt turntable 140 has a mounting groove 14b, and the pressure roller mechanism 1 is disposed in the mounting groove 14b with a gap between it and the groove. The pressure roller mechanism 1 can move along the diameter of the guide belt turntable 140. One end of the adjusting screw 14a is threaded to the guide belt turntable 140 and extends into the mounting groove 14b, pushing the pressure roller mechanism 1, thereby positioning the pressure roller mechanism 1 in the mounting groove 14b. This makes installation and disassembly more convenient and quick.
[0039] In summary, the working principle of the off-center pressure roller traction conveyor mechanism 100 of this utility model will be described in detail below:
[0040] First, the packaging material 900 enters from one end of the conveying channel 121 of the main shaft 120 and exits from the other end of the conveying channel 121, passing sequentially through the first transition roller 141, one anti-flanging mechanism 180, the input roller 150, the gap between the pressure roller 13 and the guide roller 12 of the flexible pressure roller feeding device 110, the output roller 160, another anti-flanging mechanism 180, the second transition roller 142, and the guide roller 143. Simultaneously, the drive motor 21 of the pulley drive mechanism 2 starts, driving the transmission pulley 25 to rotate via the driving pulley 22 and the transmission belt 26. The transmission pulley 25 drives the driven pulley 23 to rotate via the drive belt 24, which in turn drives the guide roller 12 to rotate. Due to the elastic force, the pressure roller 13 rotates with the guide roller 12. Therefore, the pressure roller 13 and the guide roller 12 together clamp the packaging material 900 and pull the packaging material 900 to move and be conveyed. At the same time, the traction motor 171 of the traction drive mechanism 170 is also started, driving the main shaft 120 to rotate through the active traction wheel 172, traction belt 174 and driven traction wheel 173. The main shaft 120 drives the guide belt turntable 140 to rotate, and the guide belt turntable 140 can drive the packaging material 900 output from the guide roller 143 to perform wrapping operation around the core wire.
[0041] In addition to the embodiments described above, to make the traction force of the packaging material 900 more stable, the manner in which the packaging material 900 surrounds the pressure roller 13 and the guide roller 12 can be changed. For example... Figure 9 As shown, after the packaging material 900 is drawn out from the input roller 150, it can first wrap half a turn around the pressure roller 13 downwards, then pass through the gap between the pressure roller 13 and the guide roller 12, then wrap half a turn around the guide roller 12 before extending to the output roller 160. That is, by increasing the contact surface between the packaging material 900 and the pressure roller 13 and the guide roller 12, the traction of the packaging material 900 by the guide roller 12 can be made more stable.
[0042] In addition, such as Figure 10 As shown, the pressure roller 13 is located outside the guide roller 12, that is, the guide roller 12 is located between the central axis of the main shaft 120 and the pressure roller 13; in this way, after the packaging material 900 is drawn out from the input roller 150, it passes through the gap between the pressure roller 13 and the guide roller 12, which can also increase the contact surface between the packaging material 900 and the guide roller 12, thereby making the traction of the packaging material 900 by the guide roller more stable.
[0043] Compared with the prior art, this utility model fixes the guide belt turntable 140 to the main shaft 120, and eccentrically arranges the flexible pressure roller feeding device 110 on the guide belt turntable 140. The flexible pressure roller feeding device 110 elastically clamps the packaging material 900. Because the flexible pressure roller feeding device 110 has an elastic clamping force on the packaging material 900, it can effectively accommodate packaging materials 900 of different thicknesses, eliminating the need for frequent manual adjustments to the position of the pressure roller 13. Furthermore, the elastic clamping force of the flexible pressure roller feeding device 110 prevents the central shaft 14 of the pressure roller 13 from bearing excessive pressure, thereby avoiding jamming, reducing malfunctions, and effectively improving production efficiency.
[0044] The above-disclosed embodiments are merely preferred examples of this utility model. This solution can not only convey packaging materials / tapes, but also wires / cables; simply replace the rollers with rollers suitable for conveying wires. This will not be described again here. Therefore, this should not be construed as limiting the scope of this utility model. All equivalent variations made within the scope of the claims of this utility model shall still fall within the scope of this utility model.
Claims
1. A flexible pressure roller feeding device, characterized in that: The device includes a pressure roller mechanism and a pulley drive mechanism. The pressure roller mechanism includes a wheel seat, a guide roller, a pressure roller, a central shaft, and an elastic element. The guide roller is pivotally connected to the wheel seat. The central shaft is disposed on the wheel seat and is parallel to the central axis of the guide roller. The pressure roller is rotatably disposed on the central shaft. Packaging material passes between the guide roller and the pressure roller. The elastic element is disposed on the wheel seat and presses against the central shaft, so that the pressure roller elastically presses the packaging material against the guide roller with a certain pressure. The pulley drive mechanism drives the guide roller to rotate, thereby pulling the packaging material to move.
2. The flexible pressure roller feeding device as described in claim 1, characterized in that: The wheel seat has a receiving groove and positioning grooves on opposite sides of the receiving groove. Both the receiving groove and the positioning groove are open to the outside of the wheel seat. The pressure roller is received in the receiving groove, and the two ends of the central shaft are engaged in the positioning groove to fix the central shaft circumferentially.
3. The flexible pressure roller feeding device as described in claim 1, characterized in that: The elastic element is an elastic ring, which is fitted around the outer periphery of the wheel seat and distributed at both ends of the central shaft to press the central shaft against the wheel seat.
4. The flexible pressure roller feeding device as described in claim 3, characterized in that: The outer periphery of the wheel seat and at both ends of the central shaft are provided with annular grooves, and the elastic ring is contained within the annular grooves.
5. The flexible pressure roller feeding device as described in claim 1, characterized in that: The elastic element is a spring or an elastic pressure block, respectively disposed at both ends of the central shaft, so as to provide an elastic force so that the central shaft presses against the wheel seat.
6. The flexible pressure roller feeding device as described in claim 1, characterized in that: The pulley drive mechanism includes a drive motor, a drive pulley, a driven pulley, and a drive belt. The driven pulley is coaxially fixed to one end of the pulley, and the drive pulley is located at the output end of the drive motor. The drive pulley drives the driven pulley through the drive belt.
7. The flexible pressure roller feeding device as described in claim 6, characterized in that: The pulley drive mechanism further includes a transmission pulley and a transmission belt. One end of the transmission pulley is provided with a first transmission pulley, and the other end is provided with a second transmission pulley. The transmission belt is wrapped around the driving pulley and the first transmission pulley, and the drive belt is wrapped around the second transmission pulley and the driven pulley.
8. The flexible pressure roller feeding device as described in claim 6, characterized in that: The driven pulley and the guide pulley are integrally formed.
9. The flexible pressure roller feeding device as described in claim 1, characterized in that: The outer periphery of the pulley is provided with an annular mating groove, and the side of the pressure roller near the pulley is accommodated in the annular mating groove.
10. The flexible pressure roller feeding device as described in claim 1, characterized in that: The wheel seat has a through hole that extends through both ends. The pulley is disposed in the through hole. A limiting step is provided on the outer side of the middle part of the wheel seat. A pressure cap is provided on the end face of the front end of the wheel seat. The pressure cap limits the central shaft between the pressure cap and the limiting step.