An automatic flattening test device for enameled round wire

Abstract

The present invention discloses an automatic flattening test device for enameled round wire, which relates to the technical field of enameled round wire testing. Aiming at the flattening process of enameled round wire, local optimization and improvement are carried out for the rolling action to ensure the flattening amount. The conventional after-the-fact detection method is abandoned. Instead, a front lower pressing roller and a rear lower pressing roller are added for the specific rolling action. And it does not perform real-time monitoring of the position of the straight wire roller. On the contrary, the actual flattening state in the rolling action is indirectly fed back through the change of the tension data relative to the enameled round wire or enameled flat wire in the front lower pressing roller and the rear lower pressing roller. Specifically, it is manifested as follows: According to the tension data corresponding to the front lower pressing roller and the rear lower pressing roller at both positions, it can directly and real-time feedback the problem of whether there is a deviation in the flattening amount when the enameled round wire is flattened, avoiding affecting the production efficiency of the whole line.

Description

Technical Field

[0001] The present invention relates to the technical field of enameled round wire testing, and particularly to an automatic flattening test device for enameled round wire. Background Art

[0002] Large-sized enameled round wire is usually used in high-power motors, transformers, and other applications that require high current-carrying capacity and mechanical strength. To obtain a larger cross-sectional area of the wire in a specific space to reduce resistance and improve heat dissipation performance, an enameled round wire flattening process is added. For specific details, reference can be made to the relevant content in the publication number CN116487180A.

[0003] The essence of the flattening process is to roll the round wire using a roller structure. The rolling process is relatively single. Excessive flattening will cause a significant decline in the performance of the enameled wire in that part. Insufficient flattening may require reworking the wire, wasting working hours. And the conventional flattening amount detection process lags behind the flattening process, which is a process of hindsight. If the flattening amount at a single point in the continuous flattening process has deviated, it will directly affect the production efficiency of the entire wire or directly affect the performance of the enameled flat wire. For this, the present application proposes a solution. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic flattening test device for enameled round wire. For the flattening process of enameled round wire, the rolling action of the conventional flattening process is relatively single, which may cause deviation in the flattening amount. And because the flattening process is a continuous process, the conventional flattening amount detection process lags behind the flattening process, which is a process of hindsight, making it difficult to grasp the flattening effect during the actual flattening process.

[0005] The purpose of the present invention can be achieved through the following technical solutions: An automatic flattening test device for enameled round wire, including a wire alignment component, a rolling component, a traction component, and a multi-state action cross-linking system arranged in sequence. At the middle position of the rolling component, a secondary wire roller and a primary wire roller are respectively arranged in the vertical direction from top to bottom, and front lower pressing rollers and rear lower pressing rollers are respectively arranged on both sides of the rolling component corresponding to the primary wire roller.

[0006] The enameled round wire obtains enameled flat wire through the wire alignment action of the wire alignment component and the rolling action of the rolling component. The enameled flat wire is wound through the traction component. During the rolling action, a jumper adjustment action is performed through the front lower pressing rollers and the rear lower pressing rollers. A multi-state action self-check model that establishes an association between the rolling action, the jumper adjustment action, and the winding action is established in the multi-state action cross-linking system.

[0007] It is further set that: a front wire guiding component is arranged between the wire alignment component and the front lower pressing roller, and a rear wire guiding component is arranged between the rear lower pressing roller and the traction component.

[0008] Further set as: on the rolling component, a front-back position jumper component corresponding to the front lower pressing roller and the rear lower pressing roller is provided, and an intermediate jumper component corresponding to the main line roller is provided.

[0009] Further set as: both the front-back position jumper component and the intermediate jumper component include coupling seats, and a self-check working component is further provided in the front-back position jumper component, and a main action push cylinder is further provided in the intermediate jumper component, and there is a height difference between the front lower pressing roller and the rear lower pressing roller in the vertical direction.

[0010] Further set as: the coupling seats are arranged at both ends of the front lower pressing roller, the rear lower pressing roller and the main line roller in a rotationally connected manner, and the coupling seats are slidably connected in the vertical direction in the rolling component, and a driving motor corresponding to the sub-line roller is installed in the rolling component.

[0011] Further set as: the output shafts of the main action push cylinder and the self-check working component are fixedly connected to the coupling seat in the main line roller, and the self-check working component includes a sub-action push cylinder and a tension sensing structure.

[0012] Further set as: in the multi-state action self-check model, the tension data in the tension sensing structure is used as a variable, and the traction data in the traction component is used as a fixed quantity for the multi-state action detection process. The flattened actual state in the rolling action is obtained through the multi-state action detection process, and a cross-linking control command is sent to the intermediate jumper component and the front-back position jumper component according to the flattened actual state.

[0013] The present invention has the following beneficial effects:

[0014] 1. For the flattening process of enameled round wire, its essence is to use the main line roller and the sub-line roller to cooperate to complete the rolling action, flatten the enameled round wire into enameled flat wire. To ensure the flattening amount, local optimization and improvement are carried out for the rolling action, and the conventional after-the-fact detection method is abandoned. Specifically, a front lower pressing roller and a rear lower pressing roller are respectively added to both sides of the main line roller and the sub-line roller. The front lower pressing roller and the rear lower pressing roller will not directly interfere with the rolling action in the middle position. They mainly serve as the conduction structure of the enameled round wire or the enameled flat wire. The whole process does not use the main line roller as the real-time monitoring structure. Instead, the flattened actual state in the rolling action is indirectly reflected through the change of the tension data of the enameled round wire or the enameled flat wire in the front lower pressing roller and the rear lower pressing roller;

[0015] 2. Based on the above content, the key content of the present invention lies in that when there is a deviation in the flattening amount of the enameled round wire, it directly affects the conduction speed of the enameled round wire at the main wire roller and the auxiliary wire roller. When there is a significant difference in the conduction speed of the enameled round wire at the main wire roller and the auxiliary wire roller, it will directly cause changes in the tension at the front lower pressing roller and the rear lower pressing roller. Specifically, according to the numerical comparison of the tension data at the front lower pressing roller and the rear lower pressing roller, it is possible to directly and real-time feedback whether there is a deviation in the flattening amount when the enameled round wire is flattened, thus avoiding affecting the production efficiency of the entire line.

[0016] 3. Optimize the flattening die in the flattening process: Essentially, it is a process of the main wire roller moving relative to the auxiliary wire roller to change the flattening thickness. The pressing groove on the main wire roller serves as the forming structure for flattening the enameled round wire into an enameled flat wire, thereby directly limiting the width after flattening. The key lies in the adjustment method of the flattening thickness. More specifically, it is mainly to optimize the flattening speed of the enameled round wire at the pressing groove for flattening thickness adjustment and feedback. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of an automatic flattening test device for enameled round wire proposed by the present invention;

[0019] Figure 2 In an automatic flattening test device for enameled round wire proposed by the present invention Figure 1 front view;

[0020] Figure 3 It is a schematic structural diagram of the roller pressing assembly in an automatic flattening test device for enameled round wire proposed by the present invention;

[0021] Figure 4 It is a schematic structural diagram of the main wire roller and the auxiliary wire roller in an automatic flattening test device for enameled round wire proposed by the present invention;

[0022] Figure 5 It is a schematic diagram of the operation of the roller pressing assembly in an automatic flattening test device for enameled round wire proposed by the present invention;

[0023] Figure 6 It is an operation block diagram of the polymorphic action self-checking model in the roller pressing action in an automatic flattening test device for enameled round wire proposed by the present invention.

[0024] In the figure: 1. Whole line assembly; 2. Front lead wire assembly; 3. Rolling assembly; 4. Rear lead wire assembly; 5. Traction assembly; 601. Front lower pressing roller; 602. Rear lower pressing roller; 7. Front and rear position jumper assembly; 8. Sub-line roller; 9. Intermediate jumper assembly; 10. Main line roller. Specific embodiments

[0025] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1: For the flattening process of enameled round wire, the rolling action of the conventional flattening process is relatively single, which may cause deviation in the flattening amount. And because the flattening process is a continuous process, the conventional flattening amount detection process lags behind the flattening process, which is a retroactive detection process and it is difficult to grasp the flattening effect during the actual flattening process. For this, the following technical solutions are proposed:

[0027] Refer to Figures 1 to 5 , in this embodiment, an automatic flattening test device for enameled round wire includes a whole line assembly 1, a rolling assembly 3, a traction assembly 5 and a multi-state action cross-linking system arranged in sequence. A sub-line roller 8 and a main line roller 10 are respectively arranged on the middle section of the rolling assembly 3 in the vertical direction from top to bottom, and a front lower pressing roller 601 and a rear lower pressing roller 602 are respectively arranged on both sides of the rolling assembly 3 corresponding to the main line roller 10.

[0028] The enameled round wire obtains enameled flat wire through the whole line action of the whole line assembly 1 and the rolling action of the rolling assembly 3. The enameled flat wire is wound through the traction assembly 5. In the rolling action, a jumper adjustment action is performed through the front lower pressing roller 601 and the rear lower pressing roller 602. A multi-state action self-check model associating the rolling action, the jumper adjustment action and the winding action is established in the multi-state action cross-linking system. A front lead wire assembly 2 is arranged between the whole line assembly 1 and the front lower pressing roller 601, a rear lead wire assembly 4 is arranged between the rear lower pressing roller 602 and the traction assembly 5, a front and rear position jumper assembly 7 corresponding to the front lower pressing roller 601 and the rear lower pressing roller 602 is arranged on the rolling assembly 3, and an intermediate jumper assembly 9 corresponding to the main line roller 10 is arranged.

[0029] Basic principle: A simple explanation is given for the flattening process of enameled round wire. The principle is relatively simple. The traction structure is used to continuously wind the enameled wire for directional and uniform conduction. During the conduction of the enameled wire, the corresponding pressing rail die is used to roll the enameled wire. The pressing rail die is similar to a rectangular groove structure and is made of tungsten steel. The depth and width dimensions of the groove are variable. The corresponding die is selected according to the size of the round wire to be measured. The enameled round wire enters the pressing rail die, the height of the pressing wheel (accurate to 0.1 mm controlled by a servo motor) and the tension are adjusted, and after starting the traction (controlled by a stepping motor with stable speed), the flattening test operation can be completed, such as rolling the enameled round wire into an enameled flat wire;

[0030] And specifically combined with Figure 1 and Figure 2 A simple explanation is given. The enameled round wire first passes through the wire straightening assembly 1 to straighten the enameled round wire, and then enters the middle position between the sub-wire roller 8 and the main-wire roller 10 one by one. A corresponding structural shape is formed between the sub-wire roller 8 and the main-wire roller 10. Taking Figure 4 as an example, multiple pressing rings corresponding to the enameled round wire are installed on the sub-wire roller 8, and pressing grooves corresponding to the pressing rings are formed on the outer surface of the main-wire roller 10. The enameled round wire is mainly located in the pressing grooves and is extruded into a flat wire by the pressing rings. The flattened enameled flat wire is continuously wound by the traction assembly 5, and the winding action of the traction assembly 5 is also used as the power source during the conduction of the enameled wire center. This part is the conventional method in the enameled wire flattening process. Specifically, the width and thickness of the flattened enameled flat wire can be reversely controlled by parameters such as the width of the pressing ring or the spacing of the pressing grooves corresponding to the pressing rings.

[0031] Example 2: The following supplementary explanation is given for the rolling action:

[0032] Both the front-back position jumper assembly 7 and the middle jumper assembly 9 include coupling seats. The front-back position jumper assembly 7 is also provided with a self-checking working assembly, and the middle jumper assembly 9 is also provided with a main-action push cylinder. There is a height difference between the front lower pressing roller 601 and the rear lower pressing roller 602 in the vertical direction. The coupling seats are rotatably connected to both ends of the front lower pressing roller 601, the rear lower pressing roller 602, and the main-wire roller 10, and the coupling seats are slidably connected in the vertical direction in the rolling component 3. A driving motor corresponding to the sub-wire roller 8 is installed in the rolling component 3. The output shafts of the main-action push cylinder and the self-checking working assembly are fixedly connected to the coupling seats in the main-wire roller 10. The self-checking working assembly includes a sub-action push cylinder and a tension sensing structure.

[0033] Solution description: Based on the technical content in Embodiment 1, the present invention makes local process improvements to the conventional flattening process. The obvious difference from the conventional rolling action is that: on both sides of the auxiliary line roller 8 and the main line roller 10 that perform the rolling action, a front lower pressing roller 601 and a rear lower pressing roller 602 are respectively placed. Essentially, the front lower pressing roller 601 and the rear lower pressing roller 602 do not participate in the rolling action, but only serve as interference components during the conduction process of the enameled wire. Specifically, it needs to be combined with Figure 5 for explanation:

[0034] S1: Essentially, the front lower pressing roller 601 and the rear lower pressing roller 602 also belong to the conduction structure of the enameled wire, but their setting method corresponds to that of the main line roller 10. Specifically, as Figure 5 shown, the enameled wire passing through the main line roller 10 forms a large arc through the front lower pressing roller 601 and the rear lower pressing roller 602. Specifically, both the front lower pressing roller 601 and the rear lower pressing roller 602 generate a downward pressure on the enameled wire. Under the action of the downward pressure jointly generated by the front lower pressing roller 601 and the rear lower pressing roller 602, it will also indirectly generate a tendency for the main line roller 10 to move downward, or generate a greater tension change in the enameled wire passing through the main line roller 10;

[0035] Conversely, when the main line roller 10 moves in the vertical direction, it will also generate a greater tension change in the enameled wire passing through the main line roller 10, and can also reversely affect the front lower pressing roller 601 and the rear lower pressing roller 602. For this, it is further combined with Figure 3 for explanation. Both the front lower pressing roller 601 and the rear lower pressing roller 602 are provided with front-back position jumper components 7. The purpose of the front-back position jumper components 7 is: first, the front lower pressing roller 601 and the rear lower pressing roller 602 are adjusted up and down through the auxiliary action push cylinder, and second, the tension change generated by the front lower pressing roller 601 or the rear lower pressing roller 602 can be fed back through the tension sensing structure, while the middle jumper component 9 only drives the main line roller 10 to be adjusted in the vertical direction through the main action push cylinder;

[0036] S2: Combining with the technical content in S1, the winding speed in the winding action of the traction component 5 in the present invention is relatively constant. However, in the specific operation process, the height difference between the front lower pressing roller 601 and the rear lower pressing roller 602 can be adjusted, and on the basis of adjusting the height difference between the front lower pressing roller 601 and the rear lower pressing roller 602, the main line roller 10 can be further driven to move in the vertical direction. Briefly explained: The purpose of the up and down movement of the main line roller 10 is mainly to change the thickness during the flattening process of the enameled round wire, while the switching process of the height difference between the front lower pressing roller 601 and the rear lower pressing roller 602 is used to change the winding speed of the enameled round wire during the rolling action through the main line roller 10;

[0037] Taking Figure 5For example, the installation position of the front lower pressing roller 601 is lower than that of the rear lower pressing roller 602. During this process, the height difference between the front lower pressing roller 601 and the rear lower pressing roller 602 can be further increased, that is, the front lower pressing roller 601 continues to move downward. Then, during this process, the travel of the enameled circle in the front lower pressing roller 601 is greater, thereby reducing the conduction speed of the enameled round wire when passing through the straightening roller 10; conversely, if the height of the rear lower pressing roller 602 is lower than that of the front lower pressing roller 601, the conduction speed of the enameled circle when passing through the straightening roller 10 can be increased. However, it should be noted that:

[0038] It is necessary to ensure that the horizontal plane position of the center point in the front lower pressing roller 601 and the rear lower pressing roller 602 is always lower than the horizontal plane position of the center point in the straightening roller 10. When changing the conduction speed of the enameled round wire during the rolling process, the key purpose is: by controlling the flattening time during the flattening process, "enough time" is left for the straightening roller 10 to adjust the flattening thickness;

[0039] S3: Combined with the technical content in S1~S2 for description: When the enameled round wire passing through the straightening roller 10 performs the rolling action, the thickness adjustment is carried out through the active push cylinder adjustment in the intermediate jumper assembly 9. First, the preset flattening thickness is set by the active push cylinder. However, when it continues, there may be an obvious difference between the actual flattening thickness and the preset flattening thickness. This can be indirectly understood as: this process directly affects the installation position of the straightening roller 10, thereby indirectly affecting the height difference between the front lower pressing roller 601 and the rear lower pressing roller 602. Thus, the flattening thickness in the actual flattening process can be directly judged according to the relevant parameters obtained by the tension sensing structure in the front lower pressing roller 601 and the rear lower pressing roller 602, achieving the purpose of performing the flattening action and self-checking simultaneously.

[0040] Embodiment 3: Mainly for explaining the multi-state action self-check model in Embodiment 1:

[0041] Refer to Figure 6 , in the multi-state action self-check model, the tension data in the tension sensing structure is used as a variable, and the traction data in the traction assembly 5 is used as a constant to perform the multi-state action detection process. The flattening actual situation state in the rolling action is obtained through the multi-state action detection process, and cross-linking control commands are sent to the intermediate jumper assembly 9 and the front and rear position jumper assemblies 7 according to the flattening actual situation state.

[0042] Solution description: Since there are multiple actions in the flattening process of the enameled round wire, the key lies in the specific parameters when the straightening roller 10 and the auxiliary wire roller 8 perform the rolling action. The traction assembly 5 in the overall device needs to maintain the enameled round wire for uniform winding. Therefore, the traction data is used as a constant. Taking Figure 5 as an example for description:

[0043] The tension data is mainly used to indicate the tension data FnQ and FnH in the front lower pressure roller 601 and the rear lower pressure roller 602, and further record the height differences LQ and LH of the front lower pressure roller 601 and the rear lower pressure roller 602 relative to the main line roller 10 in the vertical direction. MiZ indicates the flattening thickness in the actual state, and MiO indicates the flattening preset thickness. On the basis of maintaining LQ and LH, and in the ideal state of MiZ=MiO, when the enameled round wire passes through the main line roller 10, it will not have a significant impact on the tension data in the front lower pressure roller 601 and the rear lower pressure roller 602. However, when MiZ>MiO, it indicates that the main line roller 10 has a downward movement trend. On the contrary, when MiZ<MiO, it indicates that the main line roller 10 has an upward movement trend.

[0044] In combination with the above content, it should be noted that: whether it is the state of MiZ>MiO or MiZ<MiO, it will affect the tension data in the front lower pressure roller 601 and the rear lower pressure roller 602. It should be noted that: the thickness of the enameled round wire after flattening is mostly in millimeters, so it is difficult to detect slight thickness changes in time. If ultra-precision detection equipment is used to detect changes in the actual flattening process, it is very easy to cause damage to the ultra-precision detection equipment during the continuous flattening process. Therefore, the present invention does not directly detect the relative displacement of the main line roller 10, but specifically detects the changes in the tension data in the front lower pressure roller 601 and the rear lower pressure roller 602, and is expressed as follows:

[0045] State 1: When MiZ<MiO, because it is difficult for the main line roller 10 and the auxiliary line roller 8 to flatten the enameled round wire, the conduction speed of the enameled round wire passing through the main line roller 10 is reduced, but the traction data is relatively constant, then the enameled flat wire on the right side of the main line roller 10 generates a greater tension on the rear lower pressure roller 602, causing the rear lower pressure roller 602 to move upward, while the tension generated by the front lower pressure roller 601 is reduced;

[0046] State 2: When MiZ>MiO, because the main line roller 10 and the auxiliary line roller 8 can flatten the enameled round wire more easily, the tension changes in the front lower pressure roller 601 and the rear lower pressure roller 602 will be reduced.

[0047] Combining the above-mentioned state one and state two, the actual state of flattening in the rolling action can be directly judged, and the actual state of flattening only represents MiZ, and the subsequent cross-linking control command is mainly used to change the movement process of the front lower pressure roller 601, the main line roller 10 and the rear lower pressure roller 602 along Z1, Z2 and Z3, and combined with LQ, LH as the basis, and adjust LQ, LH according to the changes of FnQ, FnH, and finally adjust the position of the main line roller 10 according to the preset process parameters. This part is not described in detail in the present invention.

[0048] In summary, for the flattening process of enameled round wire, in order to ensure the flattening amount, local optimization and improvement are carried out for the rolling action. The conventional after-the-fact detection method is abandoned. Instead, a front lower pressing roller and a rear lower pressing roller are added for the specific rolling action. And it is not to monitor the position of the positive wire roller in real time. On the contrary, the actual flattening state in the rolling action is indirectly reflected by the change of the tension data relative to the enameled round wire or enameled flat wire in the front lower pressing roller and the rear lower pressing roller. Specifically, it is manifested as follows: According to the tension data at the corresponding positions of the front lower pressing roller and the rear lower pressing roller on both sides, it can directly and real-time reflect whether there is a problem of flattening amount deviation when the enameled round wire is flattened, so as to avoid affecting the production efficiency of the whole line.

[0049] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of the present technology can make various modifications or supplements to the described specific embodiments or use similar methods to replace them. As long as they do not deviate from the structure of the invention or exceed the scope defined by this claim book, they should all fall within the protection scope of the present invention.

[0050] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0051] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art of the present technology can well understand and utilize the present invention. The present invention is only limited by the claim book and its full scope and equivalents.

Claims

1. An automated flattening test device for enameled round wire, characterized in that: It includes a whole line assembly, a rolling assembly, a traction assembly and a multi-state action cross-linking system which are arranged in sequence, wherein the middle section of the rolling assembly is provided with a secondary line roller and a main line roller in the direction from top to bottom, and the two sides of the rolling assembly corresponding to the main line roller are provided with a front lower pressure roller and a rear lower pressure roller, respectively; the rolling assembly is provided with a front and rear position jumper assembly corresponding to the front lower pressure roller and the rear lower pressure roller, and a middle jumper assembly corresponding to the main line roller, the front and rear position jumper assembly is also provided with a self-checking working assembly, and the middle jumper assembly is also provided with a main action push cylinder; The self-checking working component includes a secondary action push cylinder and a tension sensing structure. In the polymorphic action self-checking model, the tension data in the tension sensing structure is used as a variable and the traction data in the traction component is used as a quantitative quantity to perform a polymorphic action detection process. The actual flattening state in the rolling action is obtained by the polymorphic action detection process, and a cross-linking control command is sent to the middle jumper component and the front and rear jumper components according to the actual flattening state. The enameled round wire is sequentially subjected to the wire-straightening action of the wire-straightening assembly and the rolling action of the rolling assembly to obtain the enameled flat wire, the enameled flat wire is rolled up by the traction assembly, and the front lower pressing roller and the rear lower pressing roller are used to perform the wire jumper adjustment action during the rolling action, and a multi-state action self-checking model associating the rolling action, the wire jumper adjustment action and the winding action is established in the multi-state action cross-linking system; The tension data represents the tension data FnQ and FnH in the front lower pressure roller and the rear lower pressure roller, and records the height differences LQ and LH of the front lower pressure roller and the rear lower pressure roller relative to the main line roller in the vertical direction. MiZ represents the flattening thickness in the actual state, and MiO represents the preset flattening thickness. When MiZ>MiO, it means that the main line roller has a downward movement trend, and the tension change in the front lower pressure roller and the rear lower pressure roller has a downward trend. Conversely, when MiZ<MiO, it means that the main line roller has an upward movement trend, and the enameled flat wire on the right side of the main line roller produces a greater tension on the rear lower pressure roller, while the tension produced by the front lower pressure roller is reduced.

2. The automated flattening test device for enameled round wire according to claim 1, characterized in that: A front conductor assembly is arranged between the line straightening assembly and the front lower pressure roller, and a rear conductor assembly is arranged between the rear lower pressure roller and the traction assembly.

3. The automated flattening test device for enameled round wire according to claim 1, characterized in that: The front and rear jumper wire assemblies and the middle jumper wire assembly both include a coupling seat, and the front lower pressing roller and the rear lower pressing roller are provided with a height difference along the vertical direction.

4. The automated flattening test device for enameled round wire according to claim 3, characterized in that: The coupling seat is arranged at the two end positions of the front lower pressure roller, the rear lower pressure roller and the main line roller in a rotating connection manner, and the coupling seat is slidably connected along the vertical direction in the rolling assembly, and the driving motor corresponding to the secondary line roller is installed in the rolling assembly.

5. The automated flattening test device for enameled round wire according to claim 1, characterized in that: The output shafts of the main action push cylinder and the self-checking working assembly are fixedly connected to the coupling seat in the positive line roller.

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