Fixed mandrel capable of being expanded
By designing a flexible mandrel that can be opened, the fixation of the roll shaft of metal coil material of different radii is achieved by using hollow cylinders, collar sets and drive members, which solves the problem that the prior art cannot adapt to coil materials of different radii, and improves the problem that the existing technology cannot adapt to coil materials of different radii. Applicability and overall structure compactness.
Patent Information
- Application Number
- CN202420638242.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-29
AI Technical Summary
The prior art cannot fix the roll shaft of metal coil material of different radii, resulting in insufficient applicability in processing.
A fixed mandrel that can be stretched out is designed, including a hollow cylinder, a collar group, a connecting rod, a support plate, a slider and a drive member. The slider slide is driven by the drive member to realize the outward expansion of the support plate and Retract inward movement to adapt to the roll shaft of metal coil material of different radii.
The stable fixation of the roller shafts of metal coil materials of different radii is achieved, which improves the applicability, and enhances the overall practicality due to the compact structural design.
Smart Images
Figure CN222153420U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coil material feeding, in particular to a fixed mandrel that can be expanded. Background Art
[0002] Before metal coils are processed by cutting, engraving, forming, etc., an uncoiler is needed to feed the metal coils into the processing production line.
[0003] The fixed mandrel used to fix the metal coil on the uncoiler in the prior art can only fix the metal coil raw material roller with a single radius. However, there are many types and brands of metal coil raw materials sold on the market, and the roller radius of each metal coil raw material is different. If only the fixed mandrel in the prior art is used, it is impossible to fix the metal coil raw material rollers with different radii.
[0004] Therefore, it is necessary to propose a fixed mandrel that can be expanded to fix metal coil raw material rollers of different radii, which has high practicality. Utility Model Content
[0005] The utility model aims to overcome the deficiencies of the prior art and provides an expandable fixed mandrel which can fix metal coil raw material rollers of different radii and has high practicability.
[0006] The purpose of the utility model is achieved through the following technical solutions: a fixed mandrel that can be expanded, comprising a hollow cylinder, on which at least one set of collar groups is sleeved, the collar group is composed of two collars sleeved on the hollow cylinder and moving towards or away from each other, a plurality of annular evenly distributed connecting rods are rotatably arranged on the collar, a plurality of annular evenly distributed support plates are arranged on the outside of the hollow cylinder, the support plates are rotatably connected to the connecting rods, at least one through groove is opened on the hollow cylinder, a slider connected to one of the collars is slidably arranged on the through groove, and a driving member for driving the slider to slide is arranged at one end of the hollow cylinder; when the two collars in the collar group move towards or away from each other, the support plate moves towards or away from the hollow cylinder.
[0007] The driving member is a screw rod rotatably penetrated through one end of the hollow cylinder, and the screw rod is arranged for transmission with the slider. When the screw rod rotates, the slider slides.
[0008] A fixed shaft is provided on the threaded rotating sleeve of the screw rod, and the fixed shaft is connected to the sliding block.
[0009] The end threaded rotating sleeve of the screw rod located in the hollow cylinder is provided with a screw rod connecting sleeve, and one end of the screw rod connecting sleeve away from the hollow cylinder is provided with a fixed shaft, and the fixed shaft is connected to the sliding block.
[0010] A wrench is arranged at one end of the screw rod located outside the hollow cylinder.
[0011] A transmission wheel is fixedly sleeved on the hollow cylinder.
[0012] The side of the support plate away from the hollow cylinder is arc-shaped.
[0013] The beneficial effects of the utility model are as follows: the utility model drives the slider to move through the driving member, thereby realizing the movement of the support plate to expand outward and retract inward, so that the metal coil raw material roller with different radii can be fixed, which greatly increases the practicality compared with the fixed core shaft in the prior art; and because the slider is arranged on the fixed core shaft, the entire core shaft is more compact. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional schematic diagram of the utility model (the collar and the wrench connected to the slider are not shown);
[0015] Figure 2 It is a cross-sectional view of the utility model;
[0016] In the figure, 1-hollow cylinder, 2-ring, 3-connecting rod, 4-support plate, 5-through groove, 6-slider, 7-screw, 8-fixed shaft, 9-screw connecting sleeve, 10-wrench, 11-transmission wheel, 12-connecting piece. DETAILED DESCRIPTION
[0017] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0018] It is to be noted that the concepts of directions “left”, “right”, “up”, “down”, “front”, “back”, “inside” and “outside” in the following schemes are all relative directions and will not be listed one by one here.
[0019] A fixed mandrel that can be expanded, reference Figure 1 and Figure 2, including a hollow cylinder 1. A transmission wheel 11 is fixedly sleeved on the left end of the hollow cylinder 1. Four collars 2 are sleeved on the hollow cylinder 1. The four collars 2 form a collar group in pairs. Eight connecting rods 3 are rotatably arranged on the collar 2. Four support plates 4 are distributed in a ring shape on the outer side of the hollow cylinder 1, and the support plates 4 are arc-shaped on the side away from the hollow cylinder 1. The four support plates 4 are rotatably connected with the corresponding connecting rods 3. A through groove 5 is provided on the hollow cylinder 1, and a slider 6 is slidably arranged on the through groove 5, and the slider 6 is connected to the collar 2 in one of the collar groups. The collar 2 connected to the slider 6 is fixedly connected to the collar 2 in another collar group through a connecting piece 12. When the slider 6 moves on the through groove 5, the two collars 2 in the collar group move closer to or away from each other, and the support plate 4 moves closer to or away from the hollow cylinder 1. For those skilled in the art, the number and position of the through grooves 5 can match the number and position of the collars 2. A plurality of telescopic rods may be arranged in the hollow cylinder 1, and the telescopic rods drive the slider 6 to make corresponding movements, thereby causing the collar 2 to make corresponding movements.
[0020] A screw rod 7 is rotatably provided at the right end of the hollow cylinder 1. The screw rod 7 is rotatably connected to the hollow cylinder 1 through a bearing. A wrench 10 is provided at one end of the screw rod 7 located outside the hollow cylinder 1. The wrench 10 can be detachably provided with the screw rod 7. A screw connecting sleeve 9 is provided at one end of the screw rod 7 located inside the hollow cylinder 1. A fixed shaft 8 is provided at the left end of the screw connecting sleeve 9. The fixed shaft 8 is connected to the slider 6. When the wrench 10 is rotated, the threaded connecting sleeve 9 slides left and right, thereby driving the slider 6 to slide left and right. For those skilled in the art, the screw rod 7 can be rotatably provided with the inner wall of the left end of the hollow cylinder 1, and the fixed shaft 8 is sleeved on the screw rod 7. When the screw rod 7 is threadedly rotated, the fixed shaft 8 slides left and right, thereby driving the slider 6 to move.
[0021] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above description or the technology or knowledge in the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.
Claims
1. A fixed mandrel that can be expanded, characterized in that: The invention comprises a hollow cylinder (1), wherein at least one set of collar groups is sleeved on the hollow cylinder (1), wherein the collar groups are composed of two collars (2) sleeved on the hollow cylinder (1) and moving toward or away from each other, wherein a plurality of evenly distributed annular connecting rods (3) are rotatably arranged on the collars (2), wherein a plurality of evenly distributed annular supporting plates (4) are arranged outside the hollow cylinder (1), wherein the supporting plates (4) are rotatably connected to the connecting rods (3), wherein at least one through groove (5) is formed on the hollow cylinder (1), wherein a sliding block (6) connected to one of the collars (2) is slidably arranged on the through groove (5), and wherein a driving member for driving the sliding block (6) to slide is arranged at one end of the hollow cylinder (1); When the two collars (2) in the collar group move toward or away from each other, the support plate (4) moves toward or away from the hollow cylinder (1).
2. The expandable fixed mandrel according to claim 1, characterized in that: The driving member is a screw rod (7) rotatably inserted into one end of the hollow cylinder (1), and the screw rod (7) is arranged in a transmission manner with the slider (6). When the screw rod (7) rotates, the slider (6) slides.
3. The expandable fixed mandrel according to claim 2, characterized in that: A fixed shaft (8) is provided on the threaded rotating sleeve of the screw rod (7), and the fixed shaft (8) is connected to the slider (6).
4. The expandable fixed mandrel according to claim 2, characterized in that: The end threaded rotating sleeve of the screw rod (7) located in the hollow cylinder (1) is provided with a screw rod connecting sleeve (9), and the end of the screw rod connecting sleeve (9) away from the hollow cylinder (1) is provided with a fixed shaft (8), and the fixed shaft (8) is connected to the slider (6).
5. The expandable fixed mandrel according to claim 2, characterized in that: A wrench (10) is provided at one end of the screw rod (7) located outside the hollow cylinder (1).
6. The expandable fixed mandrel according to claim 1, characterized in that: A transmission wheel (11) is fixedly sleeved on the hollow cylinder (1).
7. The expandable fixed mandrel according to claim 1, characterized in that: The side of the support plate (4) away from the hollow cylinder (1) is arc-shaped.