Variable frequency speed regulation type centering spreading roller
The design of the connecting and fastening components of the variable frequency speed-regulating centering expansion roller facilitates the replacement of expansion rollers of different diameters. Combined with the frequency converter controlling the motor start, it solves the problems of inconvenient replacement of expansion rollers and easy damage to the motor, thus improving the expansion effect and stability.
Patent Information
- Application Number
- CN202520474102.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-18
AI Technical Summary
Existing expansion rollers are inconvenient to change to different diameters, and the motors start up quickly, making them prone to damage and resulting in poor expansion effects.
The centering and expanding roller adopts a variable frequency speed control type. Through the design of the connecting and fastening components, the expanding shell and the drive rod can be easily connected. The addition of a frequency converter to control the motor start-up achieves smooth speed regulation.
It enables convenient replacement of the expansion roller diameter and protects the motor, improving the uniformity and stability of the expansion effect.
Smart Images
Figure CN223837752U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of expansion rollers, and in particular to a variable frequency speed control centering expansion roller. Background Technology
[0002] A centering and spreading roller is a device used in the fabric processing process. It is used to spread and expand the loose fabric before it is fed into the setting machine for high-temperature setting, so that the fabric can enter the setting machine in a smooth and flat state, thereby ensuring better setting effect and higher product quality.
[0003] The centering and widening roller mainly consists of a motor and a roller body. When the motor rotates, it drives the roller body to rotate. Because the threads on the left and right sections of the roller body are opposite, they exert forces on the fabric in different directions when in contact with it, thus spreading the fabric outwards and achieving the widening function. In this process, the fabric is gradually stretched out under the action of the roller body, and the originally scattered fabric becomes smooth and flat, achieving the purpose of widening to better adapt to the processing requirements of the setting machine.
[0004] When it is necessary to replace the expansion rollers of different diameters, the expansion rollers need to be completely removed from the frame before the new expansion rollers are replaced, which is inconvenient. Utility Model Content
[0005] To facilitate the replacement and disassembly of expansion rollers of different diameters, this application provides a frequency-controlled speed-regulating centering expansion roller.
[0006] The variable frequency speed control centering and expanding roller provided in this application adopts the following technical solution:
[0007] A variable frequency speed-regulating centering and expanding roller includes a motor, a drive rod, an expanding shell, a connecting assembly, and a fastening assembly. The drive rod is rotatably mounted on a frame that works with the expanding roller, and the motor drives the drive rod to rotate. The expanding shell is fitted over the drive rod for contact with the fabric. The connecting assembly is located between the expanding shell and the drive rod, and includes a first connecting rod, a second connecting rod, and a cage gear. One end of the first connecting rod is threaded to the outer wall of the drive rod, and the other end abuts against one end of the second connecting rod. The end of the second connecting rod away from the first connecting rod is fixedly connected to the inner wall of the expanding shell. The cage gear is ring-fitted onto the outer walls of the first and second connecting rods and is located at the contact point between the first and second connecting rods. The cage gear is threaded to the first and second connecting rods. The expanding shell is composed of an upper shell and a lower shell. Two connecting assemblies are provided, one between the upper shell and the drive rod, and the other between the lower shell and the drive rod. The fastening assembly is located at the end of the drive rod for driving the cage gear to rotate.
[0008] By adopting the above technical solution, when it is necessary to replace the expansion rollers of different diameters, the cage gear is driven to rotate by the fastening assembly, and then the cage gear is moved away from the junction of the first and second connecting rods. At this time, the upper and lower shells can be removed, but the drive rod remains on the frame and does not need to be removed. The expansion shells of different diameters can be replaced by splicing the new upper and lower shells onto the outer wall of the drive rod, so that the end of the first connecting rod abuts against the end of the second connecting rod. Then, the cage gear is driven to rotate by the fastening assembly, so that the cage gear moves to the junction of the first and second connecting rods, completing the connection between the expansion shell and the drive rod. The operation is simple and convenient, and the effect of easy replacement and disassembly of expansion rollers of different diameters is achieved.
[0009] Optionally, the fastening assembly includes a fastening ring and a gear ring. The fastening ring is annularly fitted onto the drive rod and is rotatably mounted on the drive rod. The gear ring is fixed to the side wall of the fastening ring near the expanded outer shell and meshes with a cage gear. Two fastening assemblies are provided corresponding to the connecting assemblies.
[0010] By adopting the above technical solution, rotating the fastening ring causes the gear ring to rotate on the drive rod. The gear ring and the cage gear are in a meshing state, ultimately driving the cage gear to rotate. The operation is simple and convenient.
[0011] Optionally, the fastening ring is composed of two half-rings joined together, and the two half-rings are detachably connected.
[0012] By adopting the above technical solution, the fastening ring assembled from the half-rings is easy to replace, so that the replacement of the extended shell is no longer limited by the diameter of the fastening ring. When the diameter of the extended shell is larger than the fastening ring, the fastening ring can be replaced directly, thus expanding the replacement range of the extended shell.
[0013] Optionally, any one of the fastening rings has an annular groove on the side wall facing the expansion housing, and the end of the expansion housing is inserted into the annular groove, the diameter of the annular groove being larger than the diameter of the toothed ring.
[0014] By adopting the above technical solution, after the expansion shell is initially assembled on the outer wall of the drive rod, one end of the expansion shell can be inserted into the ring groove to achieve the initial position limitation of the expansion shell, and at the same time, the fastening ring provides support for one end of the expansion shell.
[0015] Optionally, a protruding eave is fixed on the fastening ring without an annular groove. The protruding eave is annular and located on the side wall of the fastening ring facing the end of the expanded outer shell. The side wall of the protruding eave abuts against the inner wall of the expanded outer shell.
[0016] By adopting the above technical solution, when one end of the expanded housing is inserted into the annular groove, the other end of the expanded housing overlaps on the protruding eaves, thereby supporting both ends of the expanded housing and facilitating further connection between the expanded housing and the drive rod.
[0017] Optionally, a slot is provided at the end of the first connecting rod away from the drive rod, the slot opening is set towards the second connecting rod, the slot is opened through the side wall of the first connecting rod along the length direction of the drive rod, and a protrusion is fixed at the end of the second connecting rod near the first connecting rod, the protrusion being inserted into the slot.
[0018] By adopting the above technical solution, when the extended housing is assembled on the outer wall of the drive rod, the protrusion is inserted into the slot in the horizontal direction, and one end of the extended housing is inserted into the annular groove, thereby limiting the position of the first link and the second link, which facilitates the movement of the cage gear and covers the abutment of the first link and the second link.
[0019] Optionally, the fastening ring has an insertion hole on its circumferential outer wall.
[0020] By adopting the above technical solution, when it is inconvenient to rotate the fastening ring, an external tool can be inserted into the socket to facilitate the rotation of the fastening ring.
[0021] Optionally, the motor is connected to a frequency converter, and the frequency converter housing is fixedly connected to the motor housing.
[0022] By adopting the above technical solution, the existing centering and spreading roller control motor starts too quickly, which can easily damage the motor and result in poor spreading effect. By adding a frequency converter, the motor can gradually increase its speed during startup through a variable frequency speed adjustment phase. This avoids excessive inrush current during motor startup, reducing the risk of motor damage. At the same time, the smoother startup process helps improve the spreading effect, allowing the fabric to spread more evenly and stably in the initial spreading stage.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. The design of the connecting and fastening components, in conjunction with the drive rod, enables convenient replacement of expansion housings of different diameters without removing the drive rod from the frame;
[0025] 2. The replacement of the fastening ring allows the replacement of the extended housing to no longer be limited by the diameter of the fastening ring. When the diameter of the extended housing is larger than the fastening ring, the fastening ring can be replaced directly, thus expanding the replacement range of the extended housing.
[0026] 3. The existing centering and spreading roller control motor starts too quickly, which can easily damage the motor and result in poor spreading effect. By adding a frequency converter, the motor can gradually increase its speed during startup through a variable frequency speed adjustment phase. This avoids excessive inrush current during motor startup, reducing the risk of motor damage. Furthermore, the smoother startup process helps improve the spreading effect, allowing the fabric to spread more evenly and stably in the initial spreading stage. Attached Figure Description
[0027] Figure 1This is a structural schematic diagram of an embodiment of this application;
[0028] Figure 2 This is a partial structural cross-sectional view of the expanded outer shell.
[0029] Figure 3 This is a partial structural cross-sectional view of the connecting component.
[0030] In the diagram, 1 is the motor; 11 is the frequency converter; 2 is the drive rod; 3 is the extended housing; 31 is the upper housing; 32 is the lower housing; 4 is the connecting assembly; 41 is the first connecting rod; 411 is the slot; 42 is the second connecting rod; 421 is the protrusion; 43 is the cage gear; 5 is the fastening assembly; 51 is the fastening ring; 511 is the insertion hole; 52 is the gear ring; 6 is the ring groove; and 7 is the protrusion. Detailed Implementation
[0031] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.
[0032] This application discloses a variable frequency speed control centering and expansion roller.
[0033] refer to Figure 1 and Figure 2 A variable frequency speed-regulating centering and expanding roller includes a motor 1, a drive rod 2, an expanding housing 3, a connecting assembly 4, and a fastening assembly 5. The motor 1 is fixed to the frame, and its output end is fixedly connected to one end of the drive rod 2, causing the drive rod 2 to rotate. The drive rod 2 is rotatably mounted on the frame and rotates relative to the frame. The frame is not shown in this embodiment. The expanding housing 3 is looped around the drive rod 2. The connecting assembly 4, in conjunction with the fastening assembly 5, connects the expanding housing 3 to the drive rod 2, so that the expanding housing 3 rotates synchronously with the drive rod 2. The expanding housing 3 abuts against the fabric, providing a stretching effect. When the size of the expanding roller needs to be changed, only the expanding housing 3 needs to be replaced; the drive rod 2 does not need to be removed from the frame.
[0034] refer to Figure 1 and Figure 2 The extended outer shell 3 is composed of an upper shell 31 and a lower shell 32. Two connecting components 4 are provided: one connecting component 4 is located between the upper shell 31 and the drive rod 2, and the other connecting component 4 is located between the lower shell 32 and the drive rod 2. Both connecting components 4 are located near the ends of the extended outer shell 3, distributed at both ends of the drive rod 2 along its length. Two fastening components 5 are also provided, corresponding to the number of connecting components 4; that is, one fastening component 5 is distributed at each end of the extended outer shell 3.
[0035] refer to Figure 2 and Figure 3The connecting assembly 4 includes a first connecting rod 41, a second connecting rod 42, and a cage gear 43. One end of the first connecting rod 41 is threaded to the outer wall of the drive rod 2, and the other end abuts against one end of the second connecting rod 42. A slot 411 is provided at the end of the first connecting rod 41 near the end of the second connecting rod 42. The opening of the slot 411 faces the direction of the second connecting rod 42 and extends through the side wall of the first connecting rod 41 along the length of the drive rod 2. The end of the second connecting rod 42 away from the first connecting rod 41 is fixedly connected to the inner wall of the expanded housing 3. A protrusion 421 is fixed at the end of the second connecting rod 42 near the end of the first connecting rod 41. The protrusion 421 is inserted horizontally into the slot 411, at which point the ends of the first connecting rod 41 and the second connecting rod 42 abut against each other. The cage gear 43 is ring-fitted on the outer wall of the first connecting rod 41 and the second connecting rod 42 and located at the abutment of the first connecting rod 41 and the second connecting rod 42. The cage gear 43 is threadedly connected to the first connecting rod 41 and the second connecting rod 42. The cage gear 43 moves along the length direction of the first connecting rod 41 and the second connecting rod 42 and eventually completely covers the abutment of the first connecting rod 41 and the second connecting rod 42.
[0036] refer to Figure 3 The fastening assembly 5 includes a fastening ring 51 and a gear ring 52. The fastening ring 51 is annularly fitted onto the outer wall of the drive rod 2 and is rotatably mounted on the drive rod 2, rotating relative to the drive rod 2. The gear ring 52 is fixed to the side wall of the fastening ring 51 near the extended outer shell 3 and meshes with the cage gear 43. The rotation of the gear ring 52 drives the cage gear 43 to move on the first connecting rod 41 and the second connecting rod 42. While the cage gear 43 moves, it also displaces relative to the gear ring 52, but the gear ring 52 and the cage gear 43 always remain in a meshed state.
[0037] refer to Figure 2 and Figure 3 Each of the two fastening components 5 has two corresponding fastening rings 51. One fastening ring 51 has an annular groove 6 located on the side wall of the fastening ring 51 near the extended outer shell 3. The end of the extended outer shell 3 is inserted into the annular groove 6, which is circular. The diameter of the annular groove 6 is larger than the diameter of the toothed ring 52. The other fastening ring 51 has a protruding eave 7, which is also circular. The protruding eave 7 is located on the side wall of the fastening ring 51 near the extended outer shell 3, and the inner wall of the extended outer shell 3 abuts against the protruding eave 7. The fastening ring 51 is composed of two half-rings joined together. The two half-rings are detachably connected. Specifically, the connection method can be a bolt and a U-shaped pin. One end of the U-shaped pin is inserted into one half-ring, and the other end is inserted into the other half-ring. The U-shaped pin spans the abutting point of the two half-rings. The bolt passes through the U-shaped pin and is then threadedly connected to one of the half-rings to fix the two half-rings.
[0038] refer to Figure 2 and Figure 3The fastening ring 51 has a socket 511, which is located on the circumferential outer wall of the fastening ring 51. The motor 1 is connected to the frequency converter 11, and the housing of the frequency converter 11 is fixedly connected to the housing of the motor 1.
[0039] The implementation principle of a variable frequency speed control centering expansion roller in this application embodiment is as follows: When it is necessary to replace the expansion roller with one of different diameters, rotate the fastening ring 51 to drive the cage gear 43 to rotate, and then move the cage gear 43 away from the junction of the first connecting rod 41 and the second connecting rod 42. At this time, the upper shell 31 and the lower shell 32 can be removed, but the drive rod 2 is still on the frame and does not need to be removed. The expansion shell 3 with a different diameter can be replaced. The new upper shell 31 and lower shell 32 are spliced onto the outer wall of the drive rod 2. The protrusion 421 is inserted into the slot 411 in the horizontal direction, so that the end of the first connecting rod 41 abuts against the end of the second connecting rod 42. Then, the end of the expansion shell 3 is inserted into the annular groove 6. The fastening ring 51 with the protrusion 7 is moved so that the protrusion 7 abuts against the inner wall of the expansion shell 3. The fastening ring 51 is rotated to drive the cage gear 43 to rotate, so that the cage gear 43 moves to the junction of the first connecting rod 41 and the second connecting rod 42, thus completing the connection between the expansion shell 3 and the drive rod 2. The operation is simple and convenient, and it achieves the effect of easy replacement and disassembly of expansion rollers of different diameters.
[0040] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A variable frequency speed-regulating centering and expanding roller, comprising a motor (1), characterized in that: It also includes a drive rod (2), an expansion housing (3), a connecting assembly (4), and a fastening assembly (5); the drive rod (2) is rotatably mounted on a frame used in conjunction with the expansion roller, and the motor (1) drives the drive rod (2) to rotate; The expansion shell (3) is fitted over the drive rod (2) to abut against the fabric; the connecting assembly (4) is located between the expansion shell (3) and the drive rod (2). The connecting assembly (4) includes a first connecting rod (41), a second connecting rod (42), and a cage gear (43). One end of the first connecting rod (41) is threaded to the outer wall of the drive rod (2), and the other end abuts against one end of the second connecting rod (42). The end of the second connecting rod (42) away from the first connecting rod (41) is fixedly connected to the inner wall of the expansion shell (3). The cage gear (43) is ring-fitted around the first connecting rod (41). The cage gear (43) is threadedly connected to the first link (41) and the second link (42) on the outer wall of the first link (41) and the second link (42); the expanded outer shell (3) is spliced from the upper shell (31) and the lower shell (32); there are two connecting components (4), one located between the upper shell (31) and the drive rod (2), and the other located between the lower shell (32) and the drive rod (2); the fastening component (5) is set at the end of the drive rod (2) to drive the cage gear (43) to rotate.
2. The variable frequency speed-regulating centering and widening roller according to claim 1, characterized in that: The fastening assembly (5) includes a fastening ring (51) and a gear ring (52). The fastening ring (51) is annularly sleeved on the drive rod (2). The fastening ring (51) and the drive rod (2) are rotatably connected. The gear ring (52) is fixed on the side wall of the fastening ring (51) near the expansion shell (3). The gear ring (52) meshes with the cage gear (43). The fastening assembly (5) has two corresponding connecting assemblies (4).
3. A variable frequency speed-regulating centering and widening roller according to claim 2, characterized in that: The fastening ring (51) is composed of two half-rings joined together, and the two half-rings are detachably connected.
4. A variable frequency speed-regulating centering and widening roller according to claim 2, characterized in that: Any of the fastening rings (51) has an annular groove (6) on the side wall opposite to the expansion shell (3), and the end of the expansion shell (3) is inserted into the annular groove (6). The diameter of the annular groove (6) is larger than the diameter of the toothed ring (52).
5. A variable frequency speed-regulating centering and widening roller according to claim 4, characterized in that: A protruding eave (7) is fixed on the fastening ring (51) without the ring groove (6). The protruding eave (7) is ring-shaped and is located on the side wall of the fastening ring (51) facing the end of the extended shell (3). The side wall of the protruding eave (7) abuts against the inner wall of the extended shell (3).
6. A variable frequency speed-regulating centering and widening roller according to claim 4, characterized in that: The first connecting rod (41) has a slot (411) at the end away from the drive rod (2). The slot (411) is set facing the second connecting rod (42). The slot (411) is opened through the side wall of the first connecting rod (41) along the length direction of the drive rod (2). The end of the second connecting rod (42) near the first connecting rod (41) is fixed with a protrusion (421). The protrusion (421) is inserted into the slot (411).
7. A variable frequency speed-regulating centering and widening roller according to claim 2, characterized in that: The fastening ring (51) has an insertion hole (511) on its circumferential outer wall.
8. A variable frequency speed-regulating centering and widening roller according to claim 1, characterized in that: The motor (1) is connected to a frequency converter (11), and the housing of the frequency converter (11) is fixedly connected to the housing of the motor (1).