Central winding shaft driving device

Abstract

The utility model provides a central rolling shaft driving device which comprises a left side plate and a right side plate, a rotatable driving gear is arranged on one side plate, and the two ends of a rolling shaft are movably connected in moving grooves of the side plates. The side plates are provided with driving devices composed of fork arms and driving pieces, the lower ends of the fork arms are hinged to the side plates, fork grooves are formed in the upper ends of the fork arms and connected with the winding shaft, and the two ends of the driving pieces are hinged to the side plates and the fork arms respectively. A transmission gear corresponding to the driving gear is arranged at one end of the winding shaft, and the transmission gear can be meshed with or separated from the driving gear by moving the winding shaft back and forth. The device drives the fork arm to swing through the air cylinder and drives the winding shaft to move front and back to achieve meshing and separation of the two gears. Mechanical automatic control is adopted, operation is easy, convenient and efficient, the problems of trouble of manual operation and collision of axial teeth of the gear are solved, the working requirement for film winding can be met, the production efficiency and the equipment stability are improved, and the operation difficulty and the maintenance cost are reduced.

Description

Technical Field

[0001] The utility model relates to a winding device used in conjunction with mechanical equipment, in particular to a central winding shaft driving device. Background Art

[0002] In the production process of plastic film, film machinery and equipment play a vital role. Among them, the winding shaft is a key component of the film machinery and equipment, and the film is wound through its rotation.

[0003] Existing film machinery typically includes a frame with a rotatable drive gear mounted on it. A rotatable take-up shaft is also mounted on the frame, with a transmission gear at one end corresponding to the drive gear. The transmission gear and the drive gear can operate in two states: disengaged and engaged, and switching between these two states is achieved by axial movement of the take-up shaft.

[0004] However, this existing technology has some significant problems. First, the axial movement of the take-up shaft requires manual operation, which is not only cumbersome but also time-consuming and labor-intensive. In actual production, operators need to spend a lot of time and energy adjusting the position of the take-up shaft, which seriously affects production efficiency.

[0005] Secondly, during the axial movement of the winding shaft, which causes the two gears to mesh, the teeth of the transmission gear and the drive gear often collide with each other. This collision not only generates noise but also damages the gears, reducing their service life. It can also lead to inaccurate gear meshing, affecting the winding shaft's rotational stability and, in turn, compromising film winding quality.

[0006] With the continuous development of the plastic film industry, the performance requirements for film machinery and equipment are becoming increasingly demanding. Existing reel drive devices are no longer able to meet the requirements for efficient and stable production. Therefore, a new central reel drive device is urgently needed to address the problems existing in the existing technology. Summary of the Invention

[0007] In view of the problems pointed out in the background technology, the present invention proposes a central winding shaft driving device to solve the above technical problems.

[0008] The technical solution of the present utility model is achieved as follows:

[0009] A central winding shaft drive device includes two left and right side plates, one of which is provided with a rotatable drive gear, and a winding shaft connected to the left and right side plates, wherein the side plates are provided with movable grooves arranged in the front-to-back direction, and the ends of the winding shaft are respectively movably connected to the movable grooves on the two side plates;

[0010] The two side panels are respectively provided with a driving device capable of driving the winding shaft to move back and forth in the movable groove, the driving device comprising a fork arm and a driving member, the lower end of the fork arm being hinged to the side panel, the upper end of the fork arm being provided with a fork groove, the two ends of the winding shaft being respectively connected to the fork groove, one end of the driving member being hinged to the side panel, and the other end of the driving member being hinged to the fork arm;

[0011] One end of the reel is connected to a transmission gear corresponding to the driving gear;

[0012] When the winding shaft moves toward the driving gear, the transmission gear can be engaged with the driving gear, and when the winding shaft moves away from the driving gear, the transmission gear can be separated from the driving gear.

[0013] The utility model is further configured such that shaft sleeves are respectively sleeved on both ends of the winding shaft, the winding shaft and the shaft sleeves are rotatably connected, and the shaft sleeves are connected in the fork grooves.

[0014] The utility model is further configured such that the shaft sleeve is provided with a first annular positioning groove, and the fork arm is connected to the first positioning groove.

[0015] The utility model is further configured such that the shaft sleeve is provided with a second annular positioning groove, and the side plate is connected to the second positioning groove.

[0016] The utility model is further configured such that an opening groove connected to the movable groove is provided on the side plate, and the opening groove is connected to an end of the movable groove away from the driving gear.

[0017] The utility model is further configured such that the fork groove is U-shaped.

[0018] The utility model is further configured such that the driving member is a cylinder, a hydraulic cylinder or an electric push rod.

[0019] The utility model is further configured such that the shaft sleeve is rotatably connected to the reel shaft via a bearing.

[0020] The utility model is further configured such that the driving gear is provided with a gear plate coaxially linked therewith.

[0021] The present invention is further configured such that the other end of the driving member is hinged to the middle portion of the fork arm.

[0022] By adopting the above technical solution, the beneficial effects of the utility model are:

[0023] The central reel drive device provided by this utility model uses a cylinder to drive the swing of a fork arm, which in turn drives the reel shaft to move back and forth. As the reel shaft moves back and forth, the transmission gear approaches and moves away from the drive gear, thereby achieving engagement and disengagement between the transmission gear and the drive gear. The device uses mechanical automatic control to operate the reel shaft to move back and forth to achieve engagement and disengagement between the transmission gear and the drive gear. Operation is simple, convenient, and efficient, and the problem of axial tooth collision between the two gears is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 .

[0026] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0027] Figure 3 It is a side view of the present utility model.

[0028] Figure 4 It is a side exploded schematic diagram of the present invention.

[0029] Figure 5 It is a structural schematic diagram of one end of the reel of the utility model.

[0030] Figure 6 It is a structural schematic diagram of the fork arm of the utility model. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference as follows Figures 1-6 The utility model is described as follows:

[0033] Embodiment: A central winding shaft drive device includes two left and right side panels 1, which are arranged vertically to provide a stable support structure for the entire device. One of the side panels 1 is provided with a rotatable drive gear 2, which is usually driven by an external power source and serves as the power input portion of the entire winding shaft drive device. It also includes a winding shaft 3 connected to the left and right side panels 1, and a movable groove 4 is provided on the side panels 1. The movable groove 4 is arranged in the front-to-back direction, and the two ends of the winding shaft 3 are movably connected to the movable groove 4 on the two side panels 1. This movable groove 4 provides a track for the forward and backward movement of the winding shaft 3, ensuring that the winding shaft 3 maintains a stable direction during movement.

[0034] The two side panels 1 are respectively provided with a driving device that can drive the winding shaft 3 to move back and forth in the movable groove 4. The driving device includes a fork arm 5 and a driving member 6. The lower end of the fork arm 5 is hinged to the side panel 1, and the upper end of the fork arm 5 is provided with a fork groove 7. The two ends of the winding shaft 3 are respectively connected to the fork groove 7. One end of the driving member 6 is hinged to the side panel 1, and the other end of the driving member 6 is hinged to the fork arm 5.

[0035] The driving member 6 drives the fork arm 5 to swing, and the swing of the fork arm 5 drives the winding shaft 3 to move back and forth in the movable groove 4.

[0036] The reel 3 is the core component of the entire device and is used to reel in the plastic film. The two ends of the reel 3 are movably connected to the movable slots 4 on the two side plates 1, so that the reel 3 can move freely back and forth in the movable slots 4.

[0037] One end of the reel shaft 3 is connected to a transmission gear 8 that corresponds to the drive gear 2. When the reel shaft 3 moves toward the drive gear 2, the transmission gear 8 meshes with the drive gear 2, transmitting the power from the drive gear 2 to the reel shaft 3, causing it to rotate and rewind the film. When the reel shaft 3 moves away from the drive gear 2, the transmission gear 8 disengages from the drive gear 2, and the reel shaft 3 stops rotating.

[0038] The drive mechanism includes a fork arm 5 and a drive member 6. The lower end of the fork arm 5 is hinged to the side panel 1, allowing the fork arm 5 to swing on the side panel 1. The upper end of the fork arm 5 is provided with a fork slot 7, into which the ends of the take-up shaft 3 are connected. This design enables the fork arm 5 to move the take-up shaft 3 back and forth in the movable slot 4 as it swings.

[0039] One end of the driver 6 is hinged to the side panel 1, and the other end is hinged to the fork arm 5. The other end of the driver 6 is hinged to the middle of the fork arm 5. The driver 6 can be a device such as a hydraulic cylinder, a pneumatic cylinder, or an electric push rod. Its function is to drive the fork arm 5 to swing through its own telescopic movement. When the driver 6 extends, it pushes the fork arm 5 to swing in one direction, thereby driving the reel 3 toward the drive gear 2, causing the transmission gear 8 to mesh with the drive gear 2. When the driver 6 shortens, it pulls the fork arm 5 to swing in the opposite direction, driving the reel 3 away from the drive gear 2, causing the transmission gear 8 to separate from the drive gear 2.

[0040] Working principle and process:

[0041] The working principle of the central winding shaft driving device is to drive the fork arm 5 to swing through the driving member 6, thereby driving the winding shaft 3 to move back and forth in the movable groove 4, realizing the engagement and separation of the transmission gear 8 and the driving gear 2, thereby controlling the rotation of the winding shaft 3.

[0042] The specific working process is as follows:

[0043] When it is necessary to start the reel 3 to reel in the film, the drive member 6 extends. At this time, the drive member 6 pushes the fork arm 5 to swing around its hinge point with the side plate 1. Since the two ends of the reel 3 are connected to the fork groove 7 at the upper end of the fork arm 5, and the fork groove 7 is U-shaped, the swing of the fork arm 5 will drive the reel 3 to move forward in the movable groove 4. As the reel 3 moves, the transmission gear 8 at one end of it gradually approaches the drive gear 2. When the reel 3 moves to a certain position, the transmission gear 8 engages with the drive gear 2. At this time, the rotation of the drive gear 2 is transmitted to the reel 3 through the meshing transmission gear 8, causing the reel 3 to start rotating and reeling the film.

[0044] When it is necessary to stop or replace the reel 3, the drive member 6 is shortened. The drive member 6 pulls the fork arm 5 in the opposite direction about its hinge point with the side panel 1. This swinging of the fork arm 5 causes the reel 3 to move backward within the movable slot 4. As the reel 3 moves, the transmission gear 8 gradually moves away from the drive gear 2. When the reel 3 reaches a certain position, the transmission gear 8 completely separates from the drive gear 2, and the reel 3 stops rotating.

[0045] Automated operation: Compared with the traditional manual operation of the axial movement of the winding shaft, the device automatically drives the fork arm 5 to swing through the driving member 6, and then drives the winding shaft 3 to move back and forth, realizing automated operation, greatly improving production efficiency, and reducing the trouble and time-consuming and labor-intensive problems of manual operation.

[0046] When the winding shaft moves toward the drive gear, the transmission gear can smoothly contact and mesh with the drive gear without axial misalignment or collision. Similarly, when the winding shaft moves away from the drive gear, the transmission gear can also smoothly separate from the drive gear, avoiding unnecessary contact between the teeth.

[0047] A sleeve 9 is mounted on each end of the winding shaft 3, rotatably connected to the sleeve 9. The sleeve 9 is rotatably connected to the winding shaft 3 via a bearing, and the sleeve 9 is connected to the fork groove 7. The presence of the bearings allows the winding shaft 3 to rotate smoothly within the sleeve 9, significantly reducing friction losses. During the film winding process, the winding shaft needs to rotate continuously. Without the assistance of bearings, the direct friction between the winding shaft and the sleeve would cause increased wear and reduce the service life of the equipment.

[0048] The sleeve 9 is provided with an annular first positioning groove 10, into which the fork arm 5 is connected. This first positioning groove primarily ensures a more stable connection between the fork arm 5 and the sleeve 9. When the fork arm 5 swings, driving the take-up shaft 3 back and forth in the movable groove 4, the first positioning groove 10 constrains the position of the fork arm 5 on the sleeve 9, preventing the fork arm 5 from slipping or shifting, thereby ensuring the movement direction and position accuracy of the take-up shaft 3.

[0049] The sleeve 9 is provided with a second, annular positioning groove 11, into which the side plate 1 is connected. This second positioning groove also serves to enhance the stability and precision of the device. The side plate 1, connected to the second positioning groove 11, restricts the position of the sleeve 9 on the side plate 1, preventing it from shaking or shifting during rotation or movement. This helps ensure the accurate positioning of the winding shaft 3 in the movable groove 4, ensuring the precise meshing of the transmission gear 8 with the drive gear 2.

[0050] The positioning grooves ensure stable connections between components, reducing the likelihood of failures due to loose or offset components. Furthermore, the use of bearings improves the rotational stability of the reel, further enhancing the reliability of the device.

[0051] The side panel 1 is provided with an open slot 12 connected to the movable slot 4. The open slot 12 is connected to the end of the movable slot 4 away from the drive gear 2. The open slot 12 is connected to the movable slot 4, forming a channel through which the reel 3 can be removed and loaded. This connectivity ensures a smoother installation and removal process of the reel 3 in the device. The reel 3 can be removed from the open slot 12 and loaded into the movable slot 4. This function is of great significance in actual production. When the reel needs to be replaced, the operator can easily remove the old reel through the open slot and load the new reel into the movable slot. This greatly improves the maintenance efficiency of the equipment and reduces downtime.

[0052] The driving gear 2 is provided with a coaxial gear plate 13, which is connected to a chain. The motor drives the gear plate 13 to rotate through the chain.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A central winding shaft drive device, comprising two left and right side plates (1), wherein one of the side plates (1) is provided with a rotatable driving gear (2), and further comprising a winding shaft (3) connected to the left and right side plates (1), characterized in that: The side panels (1) are provided with movable grooves (4), and the movable grooves (4) are arranged along the front-back direction. The two ends of the winding shaft (3) are movably connected to the movable grooves (4) on the two side panels (1). The two side panels (1) are respectively provided with a driving device capable of driving the winding shaft (3) to move forward and backward in the movable groove (4), the driving device comprising a fork arm (5) and a driving member (6), the lower end of the fork arm (5) is hinged to the side panel (1), the upper end of the fork arm (5) is provided with a fork groove (7), the two ends of the winding shaft (3) are respectively connected to the fork groove (7), one end of the driving member (6) is hinged to the side panel (1), and the other end of the driving member (6) is hinged to the fork arm (5); One end of the reel (3) is connected to a transmission gear (8) corresponding to the drive gear (2); When the reel (3) moves toward the drive gear (2), the transmission gear (8) can mesh with the drive gear (2); when the reel (3) moves away from the drive gear (2), the transmission gear (8) can separate from the drive gear (2).

2. A central reel drive device according to claim 1, characterized in that: Both ends of the reel (3) are respectively sleeved with shaft sleeves (9), the reel (3) and the shaft sleeve (9) are rotatably connected, and the shaft sleeve (9) is connected to the fork groove (7).

3. A central reel drive device according to claim 2, characterized in that: The shaft sleeve (9) is provided with an annular first positioning groove (10), and the fork arm (5) is connected to the first positioning groove (10).

4. The central reel drive device according to claim 2, characterized in that: The shaft sleeve (9) is provided with an annular second positioning groove (11), and the side plate (1) is connected to the second positioning groove (11).

5. The central reel drive device according to claim 1, characterized in that: An opening groove (12) communicating with the movable groove (4) is provided on the side plate (1), and the opening groove (12) communicates with an end of the movable groove (4) away from the driving gear (2).

6. The central reel drive device according to claim 1, characterized in that: The fork groove (7) is U-shaped.

7. The central reel drive device according to claim 1, characterized in that: The driving member (6) is a cylinder, a hydraulic cylinder or an electric push rod.

8. The central reel drive device according to claim 2, characterized in that: The shaft sleeve (9) is rotatably connected to the reel shaft (3) via a bearing.

9. The central reel drive device according to claim 1, characterized in that: The driving gear (2) is provided with a gear plate (13) coaxially linked therewith.

10. The central reel drive device according to claim 1, characterized in that: The other end of the driving member (6) is hinged to the middle of the fork arm (5).

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