Drawing equipment for copper conductor production

Abstract

The invention discloses drawing equipment for copper conductor production, and relates to the field of drawing machines. According to the scheme, the device comprises a cabinet, a straightening mechanism, a variable-diameter pre-drawing die and a fixed-caliber drawing die are sequentially assembled on the surface of the cabinet, the straightening mechanism is used for straightening a copper wire, the variable-diameter pre-drawing die is used for preliminarily forming the copper wire, and the variable-diameter pre-drawing die comprises a module, a connecting base and an adjusting base; the connecting seat is fixed on the cabinet, the plurality of modules are connected with the connecting seat in a sliding manner, and the adjusting seat is rotatably connected with the connecting seat. The variable-diameter pre-drawing die is arranged at the front end station of the drawing die with the fixed caliber, the variable-diameter pre-drawing die comprises the spacing-adjustable modules, and the spacing of the modules can be adjusted by rotating the adjusting seat, so that the pre-drawing caliber is changed to adapt to copper wires made of different raw materials.

Description

Technical Field

[0001] The present invention relates to the field of drawing machines, and particularly to a drawing device for copper wire production. Background Art

[0002] A copper wire drawing device is a device for processing copper wires. For example, a drawing device for copper wire production disclosed in the publication number CN118543681A includes a wire feeding mechanism and a wire winding mechanism. A machine frame is provided between the wire feeding mechanism and the wire winding mechanism. A straightening mechanism is provided on the machine frame. A drawing mechanism is provided at the rear end of the straightening mechanism. The drawing mechanism includes two drawing dies. There is a gap between the two drawing dies, and the outer diameters of the two drawing dies gradually decrease from one end to the other end.

[0003] It draws the copper wire by setting two drawing dies. However, the two drawing dies have the same specifications and the inner diameters cannot be adjusted, so the pre-drawing effect cannot be achieved. Moreover, the current drawing machine can only stop production emergently after a wire break. At this time, losses will be caused due to the wire break, and the drawing problems cannot be warned in advance, and the drawing production data cannot be adjusted. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a drawing device for copper wire production to achieve adjustable pre-drawing caliber, adapt to different raw material copper wires, and warn of shutdown in advance to reduce losses caused by wire breaks.

[0005] To achieve the above technical purpose, the present invention provides a drawing device for copper wire production:

[0006] It includes a cabinet. A straightening mechanism, a variable-diameter pre-drawing die, and a fixed-caliber drawing die are sequentially assembled on the surface of the cabinet. The straightening mechanism is used to straighten the copper wire. The variable-diameter pre-drawing die is used to preliminarily form the copper wire. The variable-diameter pre-drawing die includes modules, a connecting seat, and an adjusting seat. The connecting seat is fixed on the cabinet. There are multiple modules, and all the modules are slidably connected to the connecting seat. The adjusting seat is rotatably connected to the connecting seat, and the adjusting seat is used to rotate to control the distance between the multiple modules. The fixed-caliber drawing die is used to form the copper wire.

[0007] Preferably, it further includes: a collection module for collecting drawing data, and the drawing data includes dimension data, resistance, and smoothness;

[0008] An abnormality identification module for determining the abnormality category based on the drawing data; and for obtaining an abnormality category sequence arranged according to the collection time sequence of the drawing data;

[0009] An analysis module is used to extract the number of regular abnormal category sequences based on the abnormal category sequence, and compare the regular abnormal category sequence with a preset threshold of the regular abnormal category sequence to determine whether to generate a stop-line maintenance instruction;

[0010] An early warning module stops drawing based on the stop-line maintenance instruction and issues a maintenance warning to inform the staff to carry out maintenance work.

[0011] Preferably, a guide wheel and a winding roller are rotatably connected to the outer surface of the cabinet. The guide wheel is used to guide the copper wire, and the winding roller is used to wind the copper wire.

[0012] Preferably, a wedge-shaped groove is formed in the inner wall of the adjusting seat, and a convex block matching the wedge-shaped groove is fixed on the outer surface of the module.

[0013] Preferably, the variable-diameter pre-drawing die further includes:

[0014] A power transmission shaft rotatably connected to the cabinet;

[0015] A worm gear linked to the power transmission shaft;

[0016] A motor fixed on the cabinet, and the output end of the motor is fixedly connected to the worm gear.

[0017] Preferably, a worm wheel is fixed to one end of the power transmission shaft, a transmission gear is fixed to the other end of the power transmission shaft, convex teeth are fixed on the outer surface of the adjusting seat, and the transmission gear meshes with the convex teeth, and the worm wheel meshes with the worm gear.

[0018] Preferably, a guide rod is fixed on the outer surface of the module, and the module is slidably connected to the connecting seat through the guide rod.

[0019] Preferably, a protective cover is hinged to the upper surface of the cabinet, and the straightening mechanism includes a horizontal straightening wheel set and a vertical straightening wheel set.

[0020] Preferably, the method for determining the abnormal category based on the drawing data includes: inputting the drawing data into the trained drawing anomaly recognition model to output an anomaly label, and the anomaly label includes 1 and 0; if the anomaly label is 1, it is determined that the abnormal category is abnormal; if the anomaly label is 0, it is determined that the abnormal category is non-abnormal.

[0021] Preferably, the method for the analysis module to determine whether to generate a stop-line maintenance instruction includes:

[0022] Extracting the number of regular abnormal category sequences based on the abnormal category sequence, and the abnormal category sequence is marked as Q, Q = [Q1, Q2, Q3,..., Q M , M is the total number of collected samples, and the collected samples are copper wires separated at a preset detection frequency;

[0023] The preset sliding window length is L, and the subsequence S is extracted from the sequence Q i , S i = [Q j , Q j+1 , …, Q j+L-1 , where S i is the subsequence starting from the j-th position, and the total number of subsequences extracted is N - L + 1;

[0024] For all subsequences S i , count the number of times it appears in the sequence Q, and mark it as F(S j ), F(S j ) = Count(S j , Q), where Count(S j , Q) is the number of matches of the subsequence S i in the sequence Q;

[0025] Preset the repetition frequency threshold T f and the abnormal sequence threshold. If the number of occurrences of a certain subsequence S i is greater than or equal to the threshold T f , then it is determined as an abnormal sequence, and the abnormal sequence = {Sj | F(S j ) ≥ T f};

[0026] If the number of abnormal sequences is greater than or equal to the abnormal sequence threshold, generate a stop-line maintenance instruction;

[0027] If the number of abnormal sequences is less than the abnormal sequence threshold, do not generate a stop-line maintenance instruction.

[0028] From the above technical solutions, it can be seen that this application has the following beneficial effects:

[0029] 1: By configuring a variable-diameter pre-drawing die at the front station of a fixed-diameter drawing die, the variable-diameter pre-drawing die includes modules with adjustable spacing. By rotating the adjusting seat, the spacing of the modules can be adjusted, thereby changing the pre-drawing diameter to adapt to copper wires of different raw materials, and the copper wire can be clamped by adjusting the variable-diameter pre-drawing die to the minimum diameter.

[0030] 2: By collecting the drawing data of the copper wire after drawing and analyzing the number and frequency of abnormalities in the drawing data, the problem of wire breakage can be predicted in advance, and the losses caused by wire breakage can be reduced. Brief Description of the Drawings

[0031] 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 in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0032] Figure 1 Structural schematic diagram of a drawing device for copper wire production provided by the present invention;

[0033] Figure 2 Structural schematic diagram of a drawing device for copper wire production provided by the present invention;

[0034] Figure 3 Structural schematic diagram of a drawing device for copper wire production provided by the present invention;

[0035] Figure 4 Structural schematic diagram of a drawing device for copper wire production provided by the present invention;

[0036] Figure 5 Structural schematic diagram of a drawing device for copper wire production provided by the present invention;

[0037] Figure 6 Structural schematic diagram of a drawing device for copper wire production provided by the present invention.

[0038] Description of the drawings: 1. Cabinet; 11. Protective cover; 2. Straightening mechanism; 21. Horizontal straightening wheel set; 22. Vertical straightening wheel set; 3. Variable-diameter pre-drawing die; 31. Module; 311. Convex block; 32. Connecting seat; 321. Guide rod; 33. Adjusting seat; 331. Wedge-shaped groove; 332. Convex tooth; 34. Power transmission shaft; 341. Worm gear; 342. Transmission gear; 35. Worm; 36. Motor; 4. Fixed-diameter drawing die; 5. Guide wheel; 6. Winding roller. Detailed implementation manners

[0039] The following description is essentially exemplary only and is not intended to limit the present disclosure, its application, and uses. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. Each drawing only schematically shows the concept and principle of the embodiments of the present disclosure, and does not necessarily show the specific dimensions and their ratios of the embodiments of the present disclosure. In a specific part of a specific drawing, the relevant details or structures of the embodiments of the present disclosure may be illustrated in an exaggerated manner.

[0040] Embodiment 1

[0041] Refer to Figures 1-5As shown in the figure, a drawing device for the production of copper wires includes a cabinet 1. On the surface of the cabinet 1, a straightening mechanism 2, a variable-diameter pre-drawing die 3, and a fixed-diameter drawing die 4 are sequentially assembled. The straightening mechanism 2 is used to straighten the copper wires, and the variable-diameter pre-drawing die 3 is used for the preliminary shaping of the copper wires. The variable-diameter pre-drawing die 3 includes modules 31, a connecting seat 32, and an adjusting seat 33. The connecting seat 32 is fixed to the cabinet 1. There are multiple modules 31, and all the multiple modules 31 are slidably connected to the connecting seat 32. The adjusting seat 33 is rotatably connected to the connecting seat 32, and the adjusting seat 33 is used to rotate to control the distance between the multiple modules 31. The fixed-diameter drawing die 4 is used for shaping the copper wires. Exemplarily, the raw material copper wires pass through the straightening mechanism 2, the variable-diameter pre-drawing die 3, and the fixed-diameter drawing die 4 in sequence. After the copper wires are straightened by the straightening mechanism 2, they are pre-drawn by the variable-diameter pre-drawing die 3 first, and finally drawn by the fixed-diameter drawing die 4 to complete the drawing.

[0042] Specifically, a guide wheel 5 and a winding roller 6 are rotatably connected to the outer surface of the cabinet 1. The guide wheel 5 is used to guide the copper wires, and the winding roller 6 is used to wind the copper wires. A protective cover 11 is hinged to the upper surface of the cabinet 1. The straightening mechanism 2 includes a horizontal straightening wheel set 21 and a vertical straightening wheel set 22. Exemplarily, by fixing the end of the raw material copper wire to the winding roller 6, the winding roller 6 provides the drawing force for the raw material copper wire. The power of the winding roller 6 is provided by a reduction motor or a three-phase asynchronous motor, and no specific limitation is made here.

[0043] Refer to Figure 3 and Figure 4 As shown in the figure, a wedge-shaped groove 331 is formed in the inner wall of the adjusting seat 33, and a convex block 311 that cooperates with the wedge-shaped groove 331 is fixed on the outer surface of the module 31. By rotating the adjusting seat 33, the convex block 311 can be pushed through the wedge-shaped groove 331, thereby changing the distance between the multiple modules 31 and thus changing the drawing diameter.

[0044] Specifically, refer to Figure 3 and Figure 4 As shown in the figure, the variable-diameter pre-drawing die 3 further includes a power transmission shaft 34, a worm 35, and a motor 36. The power transmission shaft 34 is rotatably connected to the cabinet 1. The worm 35 is linked with the power transmission shaft 34. The motor 36 is fixed to the cabinet 1, and the output end of the motor 36 is fixedly connected to the worm 35. A worm gear 341 is fixed to one end of the power transmission shaft 34, and a transmission gear 342 is fixed to the other end of the power transmission shaft 34. A convex tooth 332 is fixed to the outer surface of the adjusting seat 33, and the transmission gear 342 meshes with the convex tooth 332. The worm gear 341 meshes with the worm 35.

[0045] Exemplarily, the motor 36 drives the worm 35 to rotate. The worm 35 drives the power transmission shaft 34 to rotate through the worm gear 341. The transmission shaft drives the convex tooth 332 through the transmission gear 342, thereby driving the adjusting seat 33 to rotate.

[0046] Furthermore, a guide rod 321 is fixed on the outer surface of the module 31. The module 31 is slidably connected to the connecting seat 32 through the guide rod 321 to ensure the stability of the adjustment of the module 31.

[0047] Embodiment 2

[0048] Refer to Figure 6 As shown, based on the above embodiment, a drawing device for copper wire production further includes:

[0049] An acquisition module for collecting drawing data, where the drawing data includes dimensional data, resistance, and smoothness. In this embodiment, the acquisition module includes multiple units. For example, dimensional data can be collected by an infrared dimensional sensor, resistance can be detected by a resistance meter, and smoothness can be obtained by detecting the surface friction of the copper wire after drawing. The purpose is to determine the quality of the copper wire after drawing by collecting drawing data. For example, if the dimensions of the copper wire after drawing are uneven, the smoothness is unqualified, or the resistance is too large or too small, it indicates that there is a problem with the fixed-aperture drawing die 4 or the raw material copper wire.

[0050] It is worth noting that the acquisition module is installed at the next working station of the fixed-aperture drawing die 4. Refer to Figure 5 As shown, for example, it is installed on the right side of the fixed-aperture drawing die 4. The specific installation position is not limited here. The drawing data also includes environmental temperature, wire temperature, etc.

[0051] An anomaly recognition module for determining the anomaly category based on the drawing data; for obtaining an anomaly category sequence by arranging the drawing data in the collection time sequence; the method for determining the anomaly category based on the drawing data includes: inputting the drawing data into a trained drawing anomaly recognition model to output an anomaly label, where the anomaly label includes 1 and 0; if the anomaly label is 1, it is determined that the anomaly category is an anomaly; if the anomaly label is 0, it is determined that the anomaly category is non-anomaly.

[0052] Specifically, the training method of the drawing anomaly recognition model is:

[0053] In an experimental environment, collect multiple groups of historical drawing data and the corresponding qualified labels of the copper wire when collecting the historical drawing data. If the copper wire is unqualified, the label is 1; if the wire is qualified, the label is 0.

[0054] Use the historical drawing data and the corresponding labels as a sample set. The sample set is divided into a training set and a test set. Use the historical grinding feature data in the training set as the input of the drawing anomaly recognition model, and use the predicted labels in the training set as the output of the drawing anomaly recognition model to train the drawing anomaly recognition model, and output a drawing anomaly recognition model that meets the preset accuracy. It should be noted that the standard for meeting the preset accuracy is determined by those skilled in the art according to the actual situation. The drawing anomaly recognition model is a naive Bayes model or a support vector machine model.

[0055] An analysis module is used to extract the number of regular abnormal category sequences based on the abnormal category sequence, and compare the regular abnormal category sequence with a preset threshold of the regular abnormal category sequence to determine whether to generate a stop-line maintenance instruction;

[0056] An early warning module stops drawing based on the stop-line maintenance instruction and issues a maintenance warning to inform the staff to carry out maintenance work; for example, performing maintenance on the variable-diameter pre-drawing die 3 and the fixed-diameter drawing die 4.

[0057] Specifically, the method for the analysis module to determine whether to generate a stop-line maintenance instruction includes:

[0058] Extracting the number of regular abnormal category sequences based on the abnormal category sequence. The abnormal category sequence is marked as Q, Q = [Q1, Q2, Q3,..., Q M , where M is the total number of collected samples. The collected samples are copper wires separated at a preset detection frequency, that is, the copper wire is separated into multiple segments for detection according to the preset detection frequency on the whole copper wire. The number of detections is the total number of samples, and the sequence is arranged in the order of collection time. If the i-th segment of the copper wire is qualified, then Q i = 0 indicates qualified. If the i-th segment of the copper wire is unqualified, then Q i = 1 indicates unqualified, and Q i represents the i-th qualified category, where i is the serial number of the qualification sequence, and both i and M are integers greater than 1;

[0059] The preset sliding window length is L. The sliding window length L determines the length of the subsequence to be extracted, which is determined by those skilled in the art according to actual needs. The longer the sliding window length L, the longer the sequence to be analyzed. Extract the subsequence S i from the sequence Q, S i = [Q j , Q j+1 , …, Q j+L-1 , where S i is the subsequence starting from the j-th position, and the total number of extracted subsequences is N - L + 1;

[0060] For all subsequences S i , count the number of times it appears in the sequence Q, marked as F(S j ), F(S j ) = Count(S j , Q), where Count(S j , Q) is the number of matches of the subsequence S i in the sequence Q;

[0061] The preset repetition frequency threshold T f(If a subsequence repeats more than 3 times, it is determined as abnormal) and the abnormal sequence threshold. If a certain subsequence S i appears more than or equal to the threshold T f , it is determined as an abnormal sequence. Abnormal sequence = {Sj | F(S j ) ≥ T f};

[0062] Exemplarily, Q = [1, 1, -1, 1, 1, -1, 1, 1, -1, 1, 1, 1, -1], M = 13, sliding window length:

[0063] L = 4, repetition frequency threshold T f = 3, abnormal sequence threshold is 2, all subsequences of length 4.

[0064] S1 = [1, 1, -1, 1], S2 = [1, -1, 1, 1], S3 = [-1, 1, 1, -1], S4 = [1, 1, -1, 1], S5 = [1, -1, 1, 1], S6 = [-1, 1, 1, -1], S7 = [1, 1, -1, 1], S8 = [1, -1, 1, 1], S9 = [-1, 1, 1, 1], S10 = [1, 1, 1, -1]; Count the number of occurrences F(S j ) of each subsequence in Q: F([1, 1, -1, 1]) = 3, F([1, -1, 1, 1]) = 3, F([-1, 1, 1, -1]) = 2, F([-1, 1, 1, 1]) = 1, F([1, 1, 1, -1]) = 1.

[0065] Subsequence:

[0066] [1, 1, -1, 1][1, 1, -1, 1][1, 1, -1, 1] and [1, -1, 1, 1][1, -1, 1, 1][1, -1, 1, 1] both appear 3 times, exceeding T f = 3, so these two subsequences are abnormal subsequences.

[0067] If the number of abnormal sequences is greater than or equal to the abnormal sequence threshold, a stop-line maintenance instruction is generated, that is, the qualified rate of the segment-drawn copper wire detected by the detection equipment shows unqualified at a fixed frequency. At this time, it indicates that there is a fixed error in the detection equipment or there are unqualified segment-drawn copper wires in the processing equipment according to a fixed rule. Therefore, maintenance or calibration of the detection equipment is required;

[0068] If the number of abnormal sequences is less than the abnormal sequence threshold, no stop-line maintenance instruction is generated.

[0069] The exemplary embodiments of the solution proposed by the present disclosure have been described in detail above with reference to the preferred embodiments. However, those skilled in the art can understand that, without departing from the concept of the present disclosure, various modifications and variations can be made to the above specific embodiments, and various combinations of the technical features and structures proposed by the present disclosure can be made without exceeding the protection scope of the present disclosure. The protection scope of the present disclosure is determined by the appended claims.

Claims

1. A drawing device for the production of copper wires, characterized in that, It includes a cabinet (1), on the surface of which a straightening mechanism (2), a variable-diameter pre-drawing die (3) and a fixed-diameter drawing die (4) are sequentially assembled. The straightening mechanism (2) is used for straightening copper wires, the variable-diameter pre-drawing die (3) is used for the preliminary forming of copper wires. The variable-diameter pre-drawing die (3) includes modules (31), a connecting seat (32) and an adjusting seat (33). The connecting seat (32) is fixed on the cabinet (1). There are multiple modules (31), and multiple said modules (31) are all slidably connected to the connecting seat (32). The adjusting seat (33) is rotatably connected to the connecting seat (32), and the adjusting seat (33) is used for rotation to control the distance between multiple said modules (31). The fixed-diameter drawing die (4) is used for forming copper wires.

2. The wire drawing device for copper wire production according to claim 1, wherein It also includes: A data acquisition module, which is used to collect drawing data. The drawing data includes dimension data, resistance and smoothness; An abnormality identification module, which determines the abnormality category based on the drawing data; It is used to obtain an abnormality category sequence by arranging according to the collection time sequence of the drawing data; An analysis module, which is used to extract the number of regular abnormality category sequences based on the abnormality category sequence, and compare the regular abnormality category sequence with a preset regular abnormality category sequence threshold to determine whether to generate a stop-line maintenance instruction; An early warning module, which stops drawing based on the stop-line maintenance instruction and issues a maintenance warning to inform the staff to carry out maintenance work.

3. A wire drawing device for copper wire production according to claim 1, characterized in that, A guide wheel (5) and a winding roller (6) are rotatably connected to the outer surface of the cabinet (1). The guide wheel (5) is used for guiding the copper wire, and the winding roller (6) is used for winding the copper wire.

4. A wire drawing device for copper wire production according to claim 1, characterized in that, A wedge-shaped groove (331) is formed in the inner wall of the adjusting seat (33), and a convex block (311) matched with the wedge-shaped groove (331) is fixed on the outer surface of the module (31).

5. A wire drawing device for copper wire production according to claim 1, characterized in that, The variable-diameter pre-drawing die (3) also includes: A power transmission shaft (34), which is rotatably connected to the cabinet (1); A worm (35), which is linked with the power transmission shaft (34); A motor (36), which is fixed on the cabinet (1), and the output end of the motor (36) is fixedly connected to the worm (35).

6. A wire drawing device for copper wire production according to claim 5, characterized in that, A worm gear (341) is fixed at one end of the power transmission shaft (34), a transmission gear (342) is fixed at the other end of the power transmission shaft (34). A convex tooth (332) is fixed on the outer surface of the adjusting seat (33), and the transmission gear (342) is meshed with the convex tooth (332). The worm gear (341) is meshed with the worm (35).

7. A wire drawing device for copper wire production according to claim 1, characterized in that, A guide rod (321) is fixed on the outer surface of the module (31), and the module (31) is slidably connected to the connecting seat (32) through the guide rod (321).

8. The wire drawing device for copper wire production according to claim 1, characterized in that, A protective cover (11) is hinged on the upper surface of the cabinet (1). The straightening mechanism (2) includes a horizontal straightening wheel set (21) and a vertical straightening wheel set (22).

9. The wire drawing equipment for copper wire production according to claim 2, characterized in that, The method for determining the abnormality category based on the drawing data includes: inputting the drawing data into a trained drawing abnormality identification model to output an abnormality label. The abnormality label includes 1 and 0. If the abnormality label is 1, it is determined that the abnormality category is abnormal. If the abnormality label is 0, it is determined that the abnormality category is non-abnormal.

10. A drawing device for copper wire production according to claim 2, characterized in that, The method by which the analysis module determines whether to generate a production stop and maintenance instruction includes: Extract the number of abnormal category sequences based on the abnormal category sequence, and mark the abnormal category sequence as Q, where Q = [Q1, Q2, Q3, …, Q M , M is the total number of collected samples, and the collected samples are copper wires separated at a preset detection frequency; The preset sliding window length is L, and the subsequence S is extracted from the sequence Q i , S i = [Q j , Q j+1 , …, Q j+L-1 , S i is the subsequence starting from the j-th position, and the total number of subsequences extracted is N - L + 1; For all subsequences S i , count the number of times it appears in sequence Q, and label it as F(S j ), F(S j ) = Count(S j , Q), where Count(S j , Q) is the number of matches of subsequence S i in sequence Q; Preset repetition frequency threshold T f and abnormal sequence threshold. If the occurrence times of a certain subsequence S i is greater than or equal to the threshold T f , it is determined as an abnormal sequence. Abnormal sequence = {Sj|F(S j )≥T f}; If the number of abnormal sequences is greater than or equal to the abnormal sequence threshold, generate a production stop and maintenance instruction; If the number of abnormal sequences is less than the abnormal sequence threshold, do not generate a production stop and maintenance instruction.

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