The internal tensioning structure of the coil winding machine
By setting a guide wheel assembly on the turntable of the wire winding machine, the problem of insufficient friction when winding large-diameter steel wire is solved, achieving stable rotation of the core and preventing overturning, thus improving production efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU JIANGYANG BUILDING MATERIAL MACHINERY
- Filing Date
- 2025-08-04
- Publication Date
- 2026-07-17
Smart Images
Figure CN224510040U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cement precast pipe processing equipment technology, and in particular to the improvement of the structure of the prestressed concrete pipe wire winding machine. Background Technology
[0002] In existing technologies, to wind prestressed steel wire around the outer wall of the core of an RCP (reinforced concrete pipe) or PCCP (prestressed concrete cylinder pipe), the core needs to be placed on the rotating disc of a wire winding machine. The rotating disc then drives the core to rotate, winding the steel wire around its outer wall. The rotation of the core by the rotating disc relies primarily on passive friction (i.e., the friction between the bottom surface of the core and the rotating disc). To prevent slippage, some manufacturers add rubber plates to the bottom of the core or install rubber tires inside the core to increase the friction between the rotating disc and the core.
[0003] In practical applications, when winding prestressed steel wire (1570MPa) with a diameter of 7mm, the tension of this wire is set at approximately 4300N. The traditional method of passively increasing friction is barely sufficient. However, as market demands for concrete pipes continue to rise, increasing the diameter of the prestressed steel wire to 10mm also increases the outer diameter and height of the pipe core. At this point, the minimum tension of the prestressed steel wire is set at approximately 8620N, at least double. To prevent the pipe core from slipping and tipping over with doubled tension, thus affecting production efficiency and avoiding safety accidents, in addition to adding a pressure plate at the top, the friction issue needs to be addressed to drive the pipe core to rotate synchronously with the rotary table. Summary of the Invention
[0004] To address the above problems, this utility model provides a core tensioning structure for a winding machine that is adaptable to various specifications, effectively prevents slippage between the core and the rotary table, and effectively prevents the core from tipping over.
[0005] The technical solution of this utility model is as follows: the wire winding machine includes a rotary table. At least three sets of adjustable mounting slots are evenly distributed radially on the top surface of the rotary table; A guide wheel assembly is provided in the adjustable mounting slot; The guide wheel assembly includes a guide wheel, a swing arm, a drive rod, and a base. The base is connected to the adjustable mounting slot. The top surface of the base is provided with a hinge shaft, which is hinged to the bottom end of the swing arm. The top end of the swing arm is connected to the guide wheel through a rotating shaft. The drive rod is connected between the swing arm and the base.
[0006] Furthermore, the height of the guide wheel's axis is not less than 1 / 5 of the tube core height.
[0007] Furthermore, the drive rod is a hydraulic cylinder or a pneumatic cylinder.
[0008] Furthermore, the adjustable mounting groove is a T-groove or a dovetail groove.
[0009] Furthermore, the guide wheel is an elastic rubber guide wheel, and its width is 1.5-5% of the inner circumference of the tube core.
[0010] Furthermore, the outer side of the bottom surface of the base is provided with a core bottom surface receiving surface.
[0011] This invention utilizes a specific guide wheel assembly. When the core is placed on the base, the drive rod pushes the guide wheel to make close contact with the inner wall of the core, greatly enhancing the friction between the guide wheel and the core. The guide wheel assembly also plays a role in preventing the core from tipping over. The guide wheel can also reliably transmit the rotational torque of the turntable to the core, thereby avoiding the problem of core slippage. This invention effectively solves the problems of slippage, tipping, and reduced production efficiency when the core tension increases. Attached Figure Description
[0012] Figure 1 This is a structural schematic diagram of the present invention. Figure 2 yes Figure 1 Top view, Figure 3 This is a schematic diagram of the guide wheel assembly in this utility model.
[0013] In the diagram: 1 is the guide wheel assembly, 11 is the guide wheel, 12 is the swing arm, 13 is the drive rod, 14 is the base, 15 is the bottom surface of the tube core, 2 is the tube core, 3 is the steel wire, 4 is the rotary table drive mechanism, 41 is the rotary table, and 42 is the adjustable mounting slot.
[0014] Figure 3 The arrows in the diagram indicate the direction of movement of the swing arm. Detailed Implementation
[0015] To make the purpose, technical solution, and beneficial technical effects of this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the embodiments described in this specification are merely for explaining this application and are not intended to limit it.
[0016] The following is in conjunction with the instruction manual appendix. Figure 1-3 The present invention will be further described below.
[0017] The core tensioning structure of the winding machine includes a rotary table 41, which is driven by a rotary table drive mechanism 4 to perform forward and reverse rotational motions. At least three sets of adjustable mounting slots 42 are evenly distributed radially on the top surface of the rotary table 41; A guide wheel assembly 1 is provided in the adjustable mounting slot 42; The guide wheel assembly 1 includes a guide wheel 11, a swing arm 12, a drive rod 13, and a base 14. The base 14 is connected in an adjustable mounting groove 42. The radial position of the base 14 can be adjusted according to the inner diameter of different tube cores. The top surface of the base 14 is provided with a hinge shaft, which is hinged to the bottom end of the swing arm 12. The top end of the swing arm 12 is connected to the guide wheel 11 through a rotating shaft. The drive rod 13 is connected between the swing arm 12 and the base 14 and is used to drive the guide wheel 11 at the top of the swing arm 12 to abut against the inner wall of the tube core.
[0018] Before hoisting the core 2, the drive rod 13 is in the retracted state. At this time, when hoisting the core 2, the inner wall of the core 2 will not touch the guide wheel 11. First, adjust the base to a suitable position, then hoist the core 2 and place it on the bottom bearing surface 15. Then, activate the drive rod 13. The drive rod 13 drives the guide wheel 11 on the swing arm 12 to approach the inner wall of the core 2 until the guide wheel 11 reaches the set pressure and stops. At this time, the guide wheel 11 is in close contact with the inner wall of the core 2, achieving "centering" of the core 2 and creating a large "friction force" between the guide wheel 11 and the core 2. This reliably transmits the rotational torque of the rotary table 41 to the core 2, thus avoiding the problem of the core 2 slipping relative to the rotary table 41.
[0019] Furthermore, the axial height of the guide wheel 11 is not less than 1 / 5 of the height of the core 2. The winding process generally proceeds from bottom to top, winding one turn at a time. Under high stress, when winding to the upper part of the core 2, it is easy for the core 2 to tip over. At this point, the guide wheel assembly, positioned high, helps prevent the core 2 from tipping over. Of course, the guide wheel 11 has the best torque transmission efficiency when it is in the middle position.
[0020] Furthermore, the drive rod 13 is a hydraulic cylinder or a pneumatic cylinder.
[0021] Furthermore, the adjustable mounting slot 42 is a T-slot or a dovetail slot.
[0022] Furthermore, the guide wheel 11 is an elastic rubber guide wheel, and its width is 1.5-5% of the inner circumference of the tube core, effectively ensuring that the torque on the rotary table 41 is transmitted to the tube core through the guide wheel 11.
[0023] Furthermore, the outer side of the bottom surface of the base 14 is provided with a core bottom surface receiving surface 15. The core bottom surface receiving surface 15 can be set as an elastic rough surface, which can increase the friction between the core 2 and the core bottom surface receiving surface 15, and protect the bottom end surface of the core 2.
[0024] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model based on the technical content disclosed in this application. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this invention. Furthermore, some terminology used in this specification and claims is not limiting but merely for ease of description.
Claims
1. A core tensioning structure for a wire winding machine, the wire winding machine (4) including a rotary table (41), characterized in that, At least three sets of adjustable mounting slots (42) are evenly distributed in the radial direction on the top surface of the rotary table (41). A guide wheel assembly (1) is provided in the adjustable mounting slot (42); The guide wheel assembly (1) includes a guide wheel (11), a swing arm (12), a drive rod (13), and a base (14). The base (14) is connected in the adjustable mounting slot (42). The top surface of the base (14) is provided with a hinge shaft. The hinge shaft is hinged to the bottom end of the swing arm (12). The top end of the swing arm (12) is connected to the guide wheel (11) through a rotating shaft. The drive rod (13) is connected between the swing arm (12) and the base (14).
2. The tube core inner tensioning structure of the wire winding machine according to claim 1, characterized in that, The height of the guide wheel (11) is not less than 1 / 5 of the height of the tube core (2).
3. The tube core internal tensioning structure of the yarn winding machine according to claim 1, wherein The drive rod (13) is a hydraulic cylinder or a pneumatic cylinder.
4. The tube core internal tensioning structure of the yarn winding machine according to claim 1, wherein The adjustable mounting slot (42) is a T-slot or a dovetail slot.
5. The tube core internal tensioning structure of the yarn winding machine according to claim 1, wherein The guide wheel (11) is an elastic rubber guide wheel, and its width is 1.5-5% of the inner circumference of the tube core.
6. The tube core internal tensioning structure of the yarn winding machine according to claim 1, wherein The outer side of the bottom surface of the base (14) is provided with a core bottom surface receiving surface (15).