Automatic cylindrical material tensioning mechanism

Abstract

The utility model discloses an automatic cylinder material tensioning mechanism which comprises an inner main shaft, three tensioning round pins are symmetrically connected to the upper end and the lower end of the circumferential outer wall of the tail end of the inner main shaft in a sliding mode at equal intervals around the circumference, a mounting groove is formed in the circumferential outer wall of the inner main shaft, and a round clamping spring is movably connected into the mounting groove. An inner cavity at the tail end of the inner main shaft is movably connected with a tensioning umbrella shaft, and the bottom of the tensioning umbrella shaft is fixedly connected with a test shaft pressure spring; wherein the tail ends of three tensioning round pins are clamped on the outer wall of the circumference of the round clamping spring, the tensioning umbrella shaft is in contact with the tensioning round pins in an expanded state, the outer wall of the top of the inner main shaft is in threaded connection with three limiting screws and an angle torque sensor at equal intervals around the circumference, and the angle torque sensor is fixedly installed on the rotor installation face. And the inner rotor is fixedly connected to the inner wall. The mechanism has the advantages that the two modes of manual operation and automatic production can be met, the mechanism installation size is greatly reduced, and access to an automatic production line is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle testing, in particular to an automatic tensioning cylindrical material mechanism. Background Art

[0002] Due to the rapid rise of the new energy vehicle industry, the demand for auxiliary sensors used in new energy vehicles has also increased significantly, especially angle and torque sensors. The working principle of the angle and torque sensor is to horizontally cut the Hall magnetic field on the PCB circuit through the rotor blades inside the product, and then calculate the angle and torque position information through algorithms.

[0003] During the angle & torque sensor test process, if the concentricity between the rotor and the test shaft is not high, the test results will be unstable, the pass rate will be low, and the concentricity difference will be too large. Then the product test data will be unreliable, which will greatly reduce the pass rate of the production line and affect the product quality and production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic tightening cylindrical material mechanism to solve the problems raised in the above-mentioned background technology, that is, during the angle and torque sensor testing process, the concentricity of the rotor and the test shaft is not high, the test results are unstable, the qualified rate is low, the concentricity difference is too large, and the product test data is not credible, which will lead to a significant reduction in the qualified rate of the production line, affecting the product quality and production efficiency.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is an automatic cylindrical material tensioning mechanism, comprising:

[0007] The inner main shaft, the upper and lower ends of the circumferential outer wall of the inner main shaft end are symmetrical and equidistantly slidably connected with three tightening round pins around the circumference, the circumferential outer wall of the inner main shaft is provided with a mounting groove, a circular retaining spring is movably connected in the mounting groove, the inner cavity of the inner main shaft end is movably connected with a tightening umbrella shaft, and the bottom of the tightening umbrella shaft is fixedly connected with a test shaft compression spring;

[0008] The ends of three of the tensioning round pins are clamped on the circumferential outer wall of the circular retaining spring, and the tensioning umbrella shaft is in contact with the tensioning round pins in the expanded state.

[0009] Furthermore, the outer wall of the top of the inner main shaft is threadedly connected with three limit screws at equal intervals around the circumference;

[0010] Furthermore, the three tensioning round pins in the upper and lower layers are evenly divided, and the axis of the tensioning round pins is parallel to the axis of the inner main shaft;

[0011] Furthermore, the circumferential outer wall of the inner main shaft end is fixedly connected with a rotor mounting surface;

[0012] The rotor mounting surface is located at the lower side of the tightening round pin in the lower layer;

[0013] Furthermore, it also includes an angle torque sensor, which is fixedly mounted on the rotor mounting surface;

[0014] Further, the angle torque sensor comprises a lifting lug fixed to the outer wall and an inner rotor fixedly connected to the inner wall;

[0015] wherein the inner rotor contacts the rotor mounting surface;

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. The utility model can meet the two modes of manual operation and automatic production, greatly reducing the installation volume of the mechanism, facilitating access to the automatic production line, making full use of the characteristics of the mechanical umbrella pin, using the test shaft compression spring to apply reverse pressure to the umbrella shaft, the umbrella shaft slope is processed with an arc, and the test compression spring applies pressure upward with a slope multiple relationship. The contact surface between the tensioning round pin and the rotor is processed to imitate the arc surface angle of the inner wall of the rotor cylinder. After tightening, it fits tightly with the rotor to increase the friction. After the tensioning umbrella shaft is pressed down for a certain stroke, the circular retaining spring uses its own tightening force to retract the tensioning round pin into the cavity, ensuring that the product can be freely taken and put. The tensioning round pin is evenly divided into two layers, with 3 round pins in each layer, to ensure that the cylindrical tube is evenly supported, thereby achieving high concentricity and high stability of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the inner spindle mechanism of the utility model;

[0020] Figure 2 This is a schematic diagram of the angle torque sensor mechanism of the utility model;

[0021] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the test shaft compression spring structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the circular retaining spring structure of the utility model;

[0024] Figure 6 This is a schematic diagram of the inner spindle structure of the utility model.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Inner spindle; 2. Tensioning round pin; 3. Tensioning umbrella shaft; 4. Circular retaining spring; 5. Rotor mounting surface; 6. Test shaft compression spring; 7. Angle torque sensor; 701. Lifting ear; 702. Inner rotor; 8. Limit screw. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0029] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] See also Figure 1-6 As shown, this embodiment is an automatic cylindrical material tensioning mechanism, comprising:

[0032] The inner main shaft 1, the upper and lower ends of the circumferential outer wall of the end of the inner main shaft 1 are symmetrical and equidistantly slidably connected with three tensioning round pins 2 around the circumference, the circumferential outer wall of the inner main shaft 1 is provided with a mounting groove, a circular retaining spring 4 is movably connected in the mounting groove, the inner cavity of the end of the inner main shaft 1 is movably connected with a tensioning umbrella shaft 3, and the bottom of the tensioning umbrella shaft 3 is fixedly connected with a test shaft compression spring 6;

[0033] The inner main shaft 1 is an integrally processed part, and the test shaft compression spring 6 is used to apply reverse pressure to the tensioning umbrella shaft 3. The tensioning umbrella shaft 3 is sloped and processed. The test shaft compression spring 6 applies pressure upward in a multiple relationship of the slope. The test shaft compression spring 6 is made of spring steel, and the tensioning round pin 2 is made of wear-resistant carbon steel. The contact surface with the inner rotor 702 is a contoured arc, and the tensioned state is closely fitted with the product.

[0034] The ends of three tensioning round pins 2 are clamped on the outer circumferential wall of the circular retaining spring 4, and the tensioning umbrella shaft 3 is in contact with the tensioning round pins 2 in the expanded state;

[0035] The contact surface between the tensioning round pin 2 and the inner rotor 702 is processed to imitate the arc angle of the inner wall cylinder of the rotor. After tensioning, it fits tightly with the inner rotor 702 to increase the friction force. The tensioning round pin 2 is evenly divided into two layers, with 3 round pins in each layer, to ensure uniform support of the cylindrical tube;

[0036] The outer wall of the top of the inner main shaft 1 is threaded with three limit screws 8 at equal intervals around the circumference;

[0037] The limit screw 8 limits the retreat stroke of the tensioning umbrella shaft 3 when the spring is in the extended state;

[0038] The three tensioning round pins 2 of the upper and lower layers are evenly divided, and the axis of the tensioning round pin 2 is parallel to the axis of the inner main shaft 1;

[0039] The contact surface between the tensioning round pin 2 and the inner rotor 702 is processed to imitate the arc angle of the inner wall cylinder of the rotor. After tensioning, it fits tightly with the inner rotor 702 to increase the friction force;

[0040] The outer circumferential wall at the end of the inner main shaft 1 is fixedly connected with a rotor mounting surface 5;

[0041] The rotor mounting surface 5 is located at the lower side of the lower tensioning round pin 2;

[0042] Angle torque sensor 7, the angle torque sensor 7 is fixedly mounted on the rotor mounting surface 5;

[0043] The angle torque sensor 7 includes a lifting lug fixed to the outer wall and an inner rotor 702 fixedly connected to the inner wall;

[0044] The inner rotor 702 is in contact with the rotor mounting surface 5;

[0045] Working principle: manually or in linkage mode with the automatic line, press the tensioning umbrella shaft 3 downward by 10mm, compress the test shaft compression spring 6, and under the force of the circular retaining spring 4, the tensioning round pin 2 shrinks into the cavity until the outer arc surface of the tensioning round pin 2 has no contact with the inner wall of the inner rotor 702. Manually or in linkage mode with the automatic line, the angle torque sensor 7 is taken and placed by a manipulator. By designing the inner diameter 702 of the inner rotor and the tensioning inner shaft in the retracted state, a stable gap of 0.02-0.03mm with the inner diameter of the inner rotor 702 is ensured, which can ensure smooth product removal and placement without jamming. In the automatic tensioning state, the telescopic stroke of the tensioning round pin 2 is 1.2mm, which meets the requirement of having sufficient telescopic length to ensure sufficient tensioning force during the test. In the automatic tensioning state, the test shaft compression spring 6 reverses the tensioning umbrella shaft 3, and the three limit screws 8 are locked by the step thread to prevent the tensioning umbrella shaft 3 from jumping out of the umbrella pin cavity.

[0046] This step can satisfy both manual operation and automatic production modes, greatly reducing the installation volume of the mechanism and facilitating connection to the automatic production line.

[0047] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An automatic cylindrical material tensioning mechanism, characterized in that: include: An inner main shaft (1), wherein the upper and lower ends of the circumferential outer wall of the end of the inner main shaft (1) are symmetrically and equidistantly slidably connected with three tensioning round pins (2), the circumferential outer wall of the inner main shaft (1) is provided with a mounting groove, a circular retaining spring (4) is movably connected in the mounting groove, a tensioning umbrella shaft (3) is movably connected in the inner cavity of the end of the inner main shaft (1), and a test shaft compression spring (6) is fixedly connected to the bottom of the tensioning umbrella shaft (3); The ends of three of the tensioning round pins (2) are clamped on the circumferential outer wall of the circular retaining spring (4), and the tensioning umbrella shaft (3) is in contact with the tensioning round pins (2) in the expanded state.

2. The automatic cylindrical material tensioning mechanism according to claim 1, characterized in that: The outer wall of the top of the inner main shaft (1) is threadedly connected with three limit screws (8) at equal intervals around the circumference.

3. The automatic cylindrical material tensioning mechanism according to claim 1, characterized in that: The three tensioning round pins (2) in the upper and lower layers are evenly divided, and the axis of the tensioning round pins (2) is parallel to the axis of the inner main shaft (1).

4. The automatic cylindrical material tensioning mechanism according to claim 1, characterized in that: The outer circumferential wall at the end of the inner main shaft (1) is fixedly connected to a rotor mounting surface (5); The rotor mounting surface (5) is located on the lower side of the tightening round pin (2) of the lower layer.

5. The automatic cylindrical material tensioning mechanism according to claim 4, characterized in that: It also comprises an angle torque sensor (7), wherein the angle torque sensor (7) is fixedly mounted on the rotor mounting surface (5).

6. The automatic cylindrical material tensioning mechanism according to claim 5, characterized in that: The angle torque sensor (7) comprises a lifting lug fixed to the outer wall and an inner rotor (702) fixedly connected to the inner wall; The inner rotor (702) is in contact with the rotor mounting surface (5).

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