A retractable rotating mechanism

Abstract

The invention discloses a retractable rotating mechanism, aiming at providing a retractable rotating mechanism with compact volume. It comprises a slender shaft, a rotating roller main shaft, a synchronous belt pulley, a rotating roller bearing seat, a flange hollow seat, a paper unwinding plate with a guide hole in the center, a winding plate, a winding block, a spacer, a bearing, a spring and a matching plate; the slender shaft is at least two; the two ends of the rotating roller main shaft are installed in the rotating roller bearing seat through bearings; the synchronous belt pulley is fixedly installed on the right end of the rotating roller main shaft; the rotating roller main shaft and the synchronous belt pulley are annularly and evenly arranged with the same number of through holes as the slender shaft along the axis direction of the rotating roller main shaft; the slender shaft is slidably penetrated on the corresponding through holes; the spring is sleeved on the slender shaft, and a first limiting structure is arranged on the slender shaft at the left end of the spring; a second limiting structure for limiting the right end of the spring is arranged in the through hole; the flange hollow seat is fixedly connected to the left end of the rotating roller bearing seat.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical equipment, and in particular to a telescopic rotating mechanism. Background Art

[0002] With the advancement of science and technology, various manufacturers have higher and higher requirements for related equipment, including safety, environmental protection, noise pollution, production costs, etc. Therefore, various manufacturing companies are committed to innovating and improving their products to achieve a more reasonable state, and the design of the mechanism is also more diversified.

[0003] In the traditional rotary telescopic mechanism, the rotation and telescopic transmission are separated. The rotary transmission is one transmission component, and the telescopic shift transmission is another part. When telescoping and shifting, the entire rotary transmission is telescoping and shifting as a whole. The structure is complicated, the volume is large, and the space occupied is large. There are also many restrictions on the installation and use of the equipment. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a retractable rotating mechanism with a simple structure, compact size, and convenient installation and use.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] A retractable rotating mechanism, comprising a slender shaft, a rotating roller main shaft, a synchronous belt pulley, a rotating roller bearing seat, a flange hollow seat, a paper unwinding plate with a guide hole in the center, a winding plate, a winding block, a spacer, a bearing, a spring and a matching plate; the slender shafts are at least two; the two ends of the rotating roller main shaft are installed in the rotating roller bearing seat through bearings; the synchronous belt pulley is fixedly installed on the right end of the rotating roller main shaft; the rotating roller main shaft and the synchronous belt pulley are annularly and evenly provided with through holes with the same number as the slender shafts along the axis direction of the rotating roller main shaft; the slender shaft is slidably penetrated into the matching plate The spring is sleeved on the slender shaft, and a first limiting structure is arranged on the slender shaft at the left end of the spring; a second limiting structure at the right end of the limiting spring is arranged in the through hole; the flange hollow seat is fixedly connected to the left end of the rotating roller bearing seat; the paper unwinding tray is fixedly connected to the left end of the flange hollow seat; the winding disk is fixedly connected to the left end of each slender shaft; the winding block is composed of multiple blocks, which are evenly distributed in an annular shape and fixedly connected to the left end of the winding block; the matching disk is fixedly connected to the right end of each slender shaft; when the slender shaft compression spring moves to the right, the winding block moves into the through hole of the paper unwinding tray.

[0007] Preferably, the rotating roller bearing seat and the flange hollow seat are an integrated piece.

[0008] Preferably, the bearings are positioned by spacers.

[0009] Preferably, the elongated shaft is mounted in the through hole via a linear bearing.

[0010] Preferably, the winding disk is fixedly connected to the elongated shaft by bolts.

[0011] Preferably, the first limiting structure is a shoulder or a retaining spring.

[0012] Preferably, the second limiting structure is a flange arranged at the left end of the synchronous pulley.

[0013] Preferably, there are four elongated shafts.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The present invention is different from the traditional rotating telescopic mechanism. The traditional rotating telescopic mechanism has two separate transmission structures, rotation and telescopic, each of which is completed by a separate structure. After the rotation is completed, the telescopic displacement is to telescopically displace the entire rotating part together, resulting in a cumbersome structure and a large volume, which will restrict the installation and use of the equipment. The two transmissions of the present invention are completed with one structure. Four slender shafts run through the entire rotating roller main shaft from left to right. The left and right ends are connected to the winding disk and the matching disk, forming a whole with the four slender shafts to ensure rigidity. They rotate synchronously when rotating and telescopically telescope together when telescoping. The four slender shafts combine the two transmissions of rotation and telescopic together. One set of structure can complete the two transmission conversions, ensuring the power torque of the rotating mechanism and the stability of the telescopic movement, and also making the structure simpler and the volume smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention, in which the hollow flange seat and the paper unloading tray are in an unconnected state.

[0018] Figure 2 for Figure 1 Stereoscopic diagram. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In the following description, in order to clearly show the structure and working mode of the present invention, the drawings will be used as a reference and described with the help of many directional terms, but the words "front", "back", "left", "right", "up", "down" and so on should be understood as convenient terms, and should not be understood as restrictive terms.

[0020] Figure 1-2 The telescopic rotating mechanism shown comprises a slender shaft 1, a rotating roller main shaft 2, a synchronous pulley 3, a rotating roller bearing seat 4, a flange hollow seat 5, a paper unwinding plate 6 with a guide hole in the center, a winding plate 7, a winding block 8, a spacer 9, a bearing 11, a spring 12 and a matching plate 13; the slender shafts 1 are four in number; the rotating roller main shaft 2 is installed in the rotating roller bearing seat 4 through bearings 11 at both ends; the synchronous pulley 3 is fixedly installed on the right end of the rotating roller main shaft 2; the rotating roller main shaft 2 and the synchronous pulley 3 are annularly and evenly provided with through holes of the same number as the slender shaft 1 along the axial direction of the rotating roller main shaft 2; the slender shaft 1 is slidably penetrated into the matching plate The spring 12 is sleeved on the slender shaft 1, and a first limiting structure 15 is arranged on the slender shaft 1 at the left end of the spring 12; a second limiting structure 16 at the right end of the limiting spring 12 is arranged in the through hole; the flange hollow seat 5 is fixedly connected to the left end of the rotating roller bearing seat 4; the paper unwinding tray 6 is fixedly connected to the left end of the flange hollow seat 5; the winding disk 7 is fixedly connected to the left end of each slender shaft 1; the winding block 8 is a plurality of blocks, which are evenly distributed in an annular shape and fixedly connected to the left end of the winding block 8; the matching disk 13 is fixedly connected to the right end of each slender shaft 1; when the slender shaft 1 compresses the spring and moves to the right, the winding block 8 moves into the through hole of the paper unwinding tray 6.

[0021] In this embodiment, the bearings 11 are positioned by spacers 9, and obviously other commonly used positioning structures or positioning members can also be used. The slender shaft 1 is installed in the through hole through a linear bearing 10, and obviously other linear guides can also be connected. The winding disk 7 is fixedly connected to the slender shaft 1 by bolts. The first limiting structure 15 is a shoulder, and obviously it can also be a retaining spring. The second limiting structure 16 is a flange arranged at the left end of the synchronous pulley 3; obviously it can also be other limiting members or limiting structures, and the second limiting structure 16 can also be arranged on the rotating roller main shaft 2.

[0022] Obviously, the rotating roller bearing seat 4 and the flange hollow seat 5 can also be an integral part. The number of the elongated shafts 1 can be three or five.

[0023] In this embodiment, four slender shafts 1 pass through the entire rotating roller main shaft 2 to ensure stability during rotation and telescopic transmission. The left and right end parts of the slender shaft 2 are both provided with threaded holes. The part that passes through the left side is sealed with a flange hollow seat 5. The end of the flange hollow seat 5 is connected to the unwinding tray 6. The unwinding tray 6 is provided with a guide hole as a guide for the port to retreat during telescoping. The left end is connected to the winding disk 7 as a whole by screws. The winding block 8 is installed on the winding disk 7. The right end is connected to the matching disk 13. The winding disk 7, the winding block 8, and the matching disk 13 connected to the left and right ends are connected to the four slender shafts 1 as a whole to ensure rigidity. When the motor is driven to the synchronous pulley 3, the rotating roller main shaft 2 is driven to rotate and transmit, and the rotating roller main shaft 2 is synchronously rotated and wound with the rotating roller main shaft 2. After the rotation is completed and the paper winding is completed, the high-speed rotation stops, and the cylinder stretches the matching disk 13 to synchronously retract the slender shaft 1, the winding disk 7 and the winding block 8, and retracts into the space sealed by the flange hollow seat 5 to complete the retreat.

[0024] Four through holes are left in the middle of the rotating roller main shaft 2, so that the slender shaft passes through the entire rotating roller main shaft 2. A spring 12 is installed in the middle of the through hole. The slender shaft 1 serves as a guide rod for the spring. The through hole on the rotating roller main shaft serves as a guide hole for the spring 12 to ensure the stability of the spring expansion and contraction. Positioning holes are left at the left and right ends of the rotating roller main shaft 2, and linear bearings 10 are installed on the positioning holes, so that when the slender shaft 1 moves and expands, the slender shaft 1 always moves in a straight line and will not deviate from the linear transmission. Bearings are installed at both ends of the rotating roller main shaft 2, and a spacer sleeve 9 is installed in the middle for positioning. After installation, the two ends are tightened by the end covers through screws. Finally, the rotating roller bearing seat 4 is used to seal the entire rotating roller main shaft 2 except for the right shaft head. A synchronous pulley is installed on the right shaft head of the rotating roller main shaft 2, and they are fastened together by screws, and the end face is tightened by the end cover.

[0025] In this embodiment, both the rotation and telescopic transmission are completed by four slender shafts. The four slender shafts combine the rotation and telescopic transmission together, and one part can convert the two transmissions, which ensures the power torque of the rotation mechanism and the stability of the telescopic movement, and also makes the structure simpler and the volume smaller.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution, improvement, etc. made to the technical solution of the present invention within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A retractable rotating mechanism, comprising a slender shaft (1), a rotating roller main shaft (2), a synchronous pulley (3), a rotating roller bearing seat (4), a flange hollow seat (5), a paper unwinding plate (6) having a guide hole in the center, a winding plate (7), a winding block (8), a bearing (11), a spring (12) and a matching plate (13); characterized in that: There are at least two slender shafts (1); the two ends of the rotating roller main shaft (2) are mounted in the rotating roller bearing seat (4) through bearings (11); the synchronous pulley (3) is fixedly mounted on the right end of the rotating roller main shaft (2); the rotating roller main shaft (2) and the synchronous pulley (3) are provided with through holes in an annular distribution along the axis direction of the rotating roller main shaft (2) in the same number as the slender shafts (1); the slender shafts (1) are slidably inserted into the corresponding through holes; the spring (12) is sleeved on the slender shaft (1), and a first limiter is provided on the slender shaft (1) at the left end of the spring (12). The through hole is provided with a second limiting structure (16) at the right end of the limiting spring (12); the flange hollow seat (5) is fixedly connected to the left end of the rotating roller bearing seat (4); the paper unwinding plate (6) is fixedly connected to the left end of the flange hollow seat (5); the winding plate (7) is fixedly connected to the left end of each slender shaft (1); the winding block (8) is composed of a plurality of blocks, which are evenly connected to the left end of the winding block (8) in an annular shape; the matching plate (13) is fixedly connected to the right end of each slender shaft (1); when the slender shaft (1) compresses the spring and moves to the right, the winding block (8) moves into the through hole of the paper unwinding plate (6); The bearings (11) are positioned with spacers (9); The slender shaft (1) is installed in the through hole via a linear bearing (10); The winding disk (7) is fixedly connected to the slender shaft (1) via bolts.

2. The retractable rotating mechanism according to claim 1, characterized in that: The rotating roller bearing seat (4) and the flange hollow seat (5) are an integrated part.

3. The retractable rotating mechanism according to claim 1 or 2, characterized in that: The first limiting structure (15) is a shaft shoulder or a retaining spring.

4. The retractable rotating mechanism according to claim 1 or 2, characterized in that: The second limiting structure (16) is a flange arranged at the left end of the synchronous pulley (3).

5. The retractable rotating mechanism according to claim 1 or 2, characterized in that: There are four slender shafts (1).

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