A net making machine

Abstract

The present invention proposes a mesh making machine, including a resistance welding machine and a base, the base is provided with a lateral sliding structure, and also includes a control system and a welding head, the welding head includes a welding frame, a positive electrode conductive structure, and a negative electrode conductive structure, and the welding frame is provided with a vertical pressure adjustment self-locking structure. The present invention adopts the principle of resistance welding, controls the operation of the servo system through the control system, and then controls the movement of the relevant mechanical structure to ensure the welding trajectory of the two welding electrodes, and at the same time controls the power supply of the resistance welding machine to realize the spiral winding welding of the wedge wire mesh, and finally obtains the finished wedge wire mesh, which improves the screen mesh gap size accuracy and welding strength manufactured by the mesh making machine, has high welding accuracy, high finished product quality, reasonable mechanical structure design layout, high stability, and low equipment cost.

Description

Technical Field

[0001] The invention relates to the technical field of net making, in particular to a net making machine. Background Art

[0002] In the petrochemical industry, wedge wire mesh is widely used, so the manufacturing and welding of wedge wire mesh is particularly important. The design and research of wedge wire mesh welding machine is of top priority. Wedge wire filter, also known as slotted screen, is an industrial screen developed by Johnson. Simply put, wedge wire mesh is a mesh product composed of nickel-chromium shaped metal wire and strip metal support rods, which is produced by continuous welding. Wedge wire mesh can be made into various shapes according to the needs of use, such as flat, cylindrical, semicircular, etc. Its shaped metal wire can be set vertically or in a ring. In the manufacturing process of wedge wire screen, it is generally made into a cylindrical shape first, and other shapes are made by cutting and welding. Therefore, a welding machine for manufacturing cylindrical wedge wire screen is particularly important.

[0003] The mesh gap size accuracy and welding strength are the two most important indicators for measuring the quality of the mesh. In the usual accuracy requirements, the mesh gap size accuracy is required to be ±0.05mm, and even higher requirements need to reach ±0.02mm. The welding strength is measured by the "single weld point break method", and its minimum break force is required to be greater than 5KN. In order to ensure product quality, these two important quality factors need to be well controlled during the welding process so that the final product can meet national standards. Therefore, based on the above, the present invention designs and develops a resistance welding mesh making machine technology. Summary of the invention

[0004] The object of the present invention is to provide a mesh making machine, which improves the slit size accuracy and welding strength of the screen manufactured by the mesh making machine, has a reasonable mechanical structure design layout, high stability and low equipment cost.

[0005] The mesh making machine of the present invention comprises a resistance welding machine and a base, wherein the base is provided with a transverse sliding structure, and further comprises: a welding machine head, wherein the welding machine head comprises a welding frame, a positive electrode conductive structure, and a negative electrode conductive structure, wherein the welding frame is provided with a vertical pressure regulating self-locking structure; The positive electrode conductive structure comprises a vertically arranged positive electrode conductive member, a positive electrode main shaft driving structure, a horizontally arranged positive electrode main shaft, a positive electrode main shaft frame, a positive electrode carbon brush and a copper wheel; one end of the positive electrode conductive member is connected to the positive electrode of the resistance welding machine, and the other end is connected to the positive electrode main shaft frame, the positive electrode carbon brush is arranged on the positive electrode main shaft frame and is conductively connected to the positive electrode conductive member, the positive electrode main shaft is rotatably arranged on the positive electrode main shaft frame and is driven to rotate by the positive electrode main shaft driving structure, and the copper wheel is arranged on the positive electrode main shaft; The output end of the vertical pressure regulating self-locking structure is connected to the positive electrode main shaft frame and is used to adjust the up and down position of the positive electrode main shaft frame to adjust the up and down pressure of the copper wheel; The negative electrode conductive structure includes a vertically arranged negative electrode conductive member, a negative electrode spindle driving structure, a horizontally arranged negative electrode spindle, a negative electrode spindle frame, a negative electrode carbon brush and a mold conductive structure; one end of the negative electrode conductive member is connected to the negative electrode of the resistance welding machine, and the other end is connected to the negative electrode spindle frame, the negative electrode carbon brush is arranged on the negative electrode spindle frame and is conductively connected to the negative electrode conductive member, the negative electrode spindle is a hollow shaft, the negative electrode spindle is rotatably arranged on the negative electrode spindle frame and is driven to rotate by the negative electrode spindle driving structure; The conductive structure of the mold includes a mounting mold, a traction mold, and a traction mold main shaft driving structure located below the copper wheel; the mounting mold is arranged at one end of the negative electrode main shaft, and a mounting hole for passing a wire winding support rod is provided on the mounting mold. The wire winding support rod passes through the negative electrode main shaft and the mounting hole in sequence, and the wire winding support rods are arranged at intervals to form a cylindrical shape. The wire winding support rod passing through the mounting hole is connected to the traction mold, and the negative electrode main shaft drives the mounting mold and the wire winding support rod thereon to rotate; the traction mold main shaft driving structure drives the traction mold to rotate; When the positive electrode conductive structure and the negative electrode conductive structure are energized, and the rotating copper wheel contacts the rotating wire winding support rod and the wire winding thereon to form a connection and conduction between the positive and negative electrodes, the high temperature melting in the resistance welding is generated, and the pressure of the copper wheel is added to weld the wire winding support rod and the wire winding thereon thereto into shape; The traction die is connected to the transverse sliding structure. When the negative electrode main shaft drives the wire winding support rod to rotate, the transverse sliding structure synchronously drives the wire winding support rod to move laterally alone according to the required pitch, and the wire winding on the wire winding support rod is finally formed into a spirally welded mesh cylinder during the welding process. A control system, wherein the positive electrode spindle drive structure, the negative electrode spindle drive structure, and the traction mold spindle drive structure are electrically connected to the control system respectively.

[0006] In at least some embodiments, the vertical pressure adjustment self-locking structure includes a vertical reciprocating drive structure, a vertical sliding connection and a vertical adjustment frame. The vertical reciprocating drive structure is arranged on the welding frame, and the vertical sliding connection is slidably arranged on the welding frame. The output end of the vertical reciprocating drive structure is connected to the vertical sliding connection, the vertical sliding connection is connected to the vertical adjustment frame, and the vertical adjustment frame is connected to the positive electrode main shaft frame.

[0007] At least some embodiments further include a vertical fine-tuning structure, which includes a vertical fine-tuning base and a vertical fine-tuning screw. The vertical fine-tuning base is arranged on the vertical sliding connection, and the vertical fine-tuning screw is threadedly connected to the vertical fine-tuning base. The vertical fine-tuning screw is connected to the vertical adjustment frame for fine-tuning the vertical position of the vertical adjustment frame.

[0008] At least some embodiments further include a lateral fine-tuning structure, which includes a lateral fine-tuning base and a lateral fine-tuning screw. The lateral fine-tuning base is disposed on the vertical adjustment frame, the lateral fine-tuning screw is threadedly connected to the lateral fine-tuning base, and the lateral fine-tuning screw is connected to the positive electrode main shaft frame.

[0009] At least some embodiments further include a self-locking structure for locking the vertically moving position of the vertical sliding connector.

[0010] In at least some embodiments, the transverse sliding structure includes a slide rail, a transverse reciprocating drive structure, a reciprocating transmission structure and a sliding traction frame arranged on the base, the sliding traction frame is slidably arranged on the slide rail and connected to the reciprocating transmission structure, the reciprocating transmission structure is driven by the transverse reciprocating drive structure, and the sliding traction frame is connected to the traction mold.

[0011] At least some embodiments further include a wire straightening structure and an auxiliary wire guiding structure, wherein the wire straightening structure includes a first group of straightening rollers and a second group of straightening rollers arranged opposite to each other, and a straightening slit for wire insertion and straightening is formed between the first group of straightening rollers and the second group of straightening rollers; The auxiliary wire-guiding structure comprises a guide seat and a guide hole arranged on the guide seat. After the wire is straightened, it passes through the guide hole until it is introduced onto the wire-winding support rod.

[0012] At least some embodiments further include a wire straightening structure lifting structure, which is slidably disposed on the welding frame and is respectively connected to the wire straightening structure and the auxiliary guide wire feeding structure through a support frame.

[0013] In at least some embodiments, the positive electrode conductive member and the negative electrode conductive member are both electrode plate structures.

[0014] In at least some embodiments, the copper wheel is a beryllium copper wheel.

[0015] The mesh making machine of the present invention comprises a resistance welding machine and a base, wherein the base is provided with a transverse sliding structure, and further comprises a control system and a welding head, wherein the welding head comprises a welding frame, a positive electrode conductive structure, and a negative electrode conductive structure, and wherein the welding frame is provided with a vertical pressure regulating self-locking structure. The present invention adopts the principle of resistance welding, controls the operation of the servo system through the control system, and then controls the movement of the relevant mechanical structure, ensures the welding track of the two welding electrodes, and controls the power supply of the resistance welding machine at the same time to realize the spiral winding welding of the wedge-shaped wire mesh, and finally obtains the finished wedge-shaped wire mesh, thereby improving the screen mesh gap size accuracy and welding strength manufactured by the mesh making machine, with high welding accuracy, high finished product quality, reasonable mechanical structure design layout, high stability, and low equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the net making machine of the present invention; Figure 2 for Figure 1 Side view of Figure 3 for Figure 1 The structural diagram of the welding head; Figure 4 It is a schematic diagram of the principle structure of resistance welding of the present invention; Figure 5 for Figure 1 A partial enlarged view of the middle part; Figure 6 for Figure 1 A partial enlarged view of part B in the middle; Figure 7 for Figure 1 A partial enlarged view of the middle C part; In the figure: 1. resistance welding machine, 2. welding frame, 3. positive electrode conductive part, 4. positive electrode spindle driving structure, 5. positive electrode spindle, 6. copper wheel, 7. vertical reciprocating driving structure, 8. vertical sliding connection, 9. vertical adjustment frame, 10. vertical fine-tuning base, 11. vertical fine-tuning screw, 12. horizontal fine-tuning base, 13. horizontal fine-tuning screw, 14. negative electrode conductive part, 15. negative electrode spindle driving structure, 16. negative electrode spindle frame, 17. negative electrode carbon brush, 18. mounting mold, 180. mounting hole, 19. Traction mold main shaft, 20. Traction mold, 21. Traction mold main shaft driving structure, 22. Wire winding support rod, 23. Wire winding, 24. Base, 25. Slide rail, 26. Transverse reciprocating drive structure, 27. Reciprocating transmission structure, 28. Sliding traction frame, 29. Wire winding straightening structure, 30. Auxiliary guide wire feeding structure, 31. Wire winding straightening structure lifting structure, 32. Control system, 33. Positive electrode carbon brush, 34. Negative electrode main shaft, 35. Net cylinder, 36. Positive electrode main shaft frame, 37. Stop valve. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] like Figures 1 to 7 As shown in the figure, the mesh making machine of the present invention comprises a resistance welding machine 1, a base 24 and a welding head, wherein the base 24 is provided with a transverse sliding structure, and the welding head comprises a welding frame 2, a positive electrode conductive structure, and a negative electrode conductive structure, and a vertical pressure regulating self-locking structure is provided on the welding frame 2. Resistance welding is a method in which a workpiece to be welded is pressed between two electrodes and an electric current is applied, and the resistance heat effect generated by the current flowing through the contact surface and the adjacent area of ​​the workpiece is used to heat it to a molten or plastic state, so as to form a metal bond.

[0019] like Figures 1 to 7 As shown in , the positive electrode conductive structure includes a vertically arranged positive electrode conductive member 3, a positive electrode spindle driving structure 4 (preferably a positive electrode spindle driving servo motor), a horizontally arranged positive electrode spindle 5, a positive electrode spindle frame, a positive electrode carbon brush 33 and a copper wheel 6; one end of the positive electrode conductive member 3 is connected to the positive electrode of the resistance welding machine 1, and the other end is connected to the positive electrode spindle frame 36, the positive electrode carbon brush 33 is arranged on the positive electrode spindle frame 36 and is conductively connected to the positive electrode conductive member 3, the positive electrode spindle 5 is rotatably arranged on the positive electrode spindle frame 36 and is driven to rotate by the positive electrode spindle driving structure 4, and the copper wheel 6 is arranged on the positive electrode spindle 5; The output end of the vertical pressure regulating self-locking structure is connected to the positive electrode main shaft frame 36 and is used to adjust the up and down position of the positive electrode main shaft frame 36 to adjust the up and down pressure of the copper wheel 6; The negative electrode conductive structure includes a vertically arranged negative electrode conductive member 14, a negative electrode spindle driving structure 15 (preferably a negative electrode spindle driving servo motor), a horizontally arranged negative electrode spindle 34, a negative electrode spindle frame 16, a negative electrode carbon brush 17 and a mold conductive structure; one end of the negative electrode conductive member 14 is connected to the negative electrode of the resistance welding machine 1, and the other end is connected to the negative electrode spindle frame 16, the negative electrode carbon brush 17 is arranged on the negative electrode spindle frame 16 and is conductively connected to the negative electrode conductive member 14, the negative electrode spindle 34 is a hollow shaft, the negative electrode spindle 34 is rotatably arranged on the negative electrode spindle frame 16 and is driven to rotate by the negative electrode spindle driving structure 15; the mold conductive structure includes a mold 18, a traction mold 20, a traction mold spindle driving structure 21 (traction mold 21) located below the copper wheel 6 The mounting die 18 is provided with a mounting hole 180 for passing the wire winding support rod 22, the wire winding support rod 22 passes through the hollow negative electrode main shaft 34 and the mounting hole 180 in turn, and the wire winding support rod 22 is arranged at intervals to form a cylindrical shape, the wire winding support rod 22 passing through the mounting hole 180 is connected to the traction die 20, and the traction die 20 is installed on the traction die main shaft 19, and the traction die main shaft 19 is driven by the above-mentioned traction die main shaft driving structure 21, and the negative electrode main shaft 34 drives the mounting die and the wire winding support rod 22 thereon to rotate; during the welding process, the traction die main shaft 19 drives the mounting die 18 to be in a rotating motion all the time, and the electrode cannot be directly installed therein, otherwise the cable wire will continue to twist until it is broken, so it is not operable. Therefore, the present invention uses a carbon brush as an electrode to fix the negative electrode carbon brush 17 on the negative electrode main shaft frame 16, and the negative electrode main shaft 34 is arranged on the negative electrode main shaft frame 16 and is connected to the mounting mold, so that the mounting mold 18 is always connected to the negative electrode carbon brush 17 electrode during the rotation process, forming another electrode of the resistance welding machine 1 (the working principle of the positive electrode carbon brush is the same as that of the negative electrode carbon brush, which will not be repeated). In order to ensure the stability of the current during welding, the carbon brushes can be evenly distributed on the mounting surfaces of the respective mounting main shaft frames. The support rod on the above-mentioned mounting mold is driven by the traction mold main shaft driving structure 21 and the negative electrode main shaft 34 is driven by the negative electrode main shaft driving structure 15, that is, the traction mold main shaft 19 and the negative electrode main shaft 34 connected to each other adopt a dual drive structure, which further ensures the driving accuracy and is reasonably designed.

[0020] When the positive electrode conductive structure and the negative electrode conductive structure are energized, and the rotating copper wheel 6 contacts the rotating wire support rod 22 and the wire 23 thereon to form a connection and conduction between the positive and negative electrodes, the high temperature melting in the resistance welding and the pressure of the copper wheel 6 make the wire support rod 22 and the wire 23 thereon welded into shape, such as Figure 4As shown in the figure; and the traction mold 20 is connected to the transverse sliding structure, when the negative electrode main shaft 34 drives the wire winding support rod 22 on the mounting mold 18 to rotate, the transverse sliding structure synchronously drives the wire winding support rod 22 to move laterally alone according to the required pitch, and the wire winding 23 on the wire winding support rod 22 is finally formed into a spirally welded mesh tube 35 during the welding process; The control system 32 , the positive electrode spindle driving structure 4 , the negative electrode spindle driving structure 15 , and the traction mold spindle driving structure 21 are electrically connected to the control system 32 , respectively.

[0021] The present invention adopts the principle of resistance welding, controls the operation of the servo system through PLC, and then controls the movement of related mechanical structures, ensures the welding trajectory of the two welding electrodes, and controls the power supply of the resistance welding machine to realize the spiral winding welding of the wedge wire mesh, and finally obtains the finished wedge wire mesh with high welding precision and finished product quality.

[0022] The generation of welding heat and the factors affecting heat generation are determined by the following formula: Q=I 2 Rt (J) In the formula, Q represents the heat generated (J), I represents the welding current (A), R represents the resistance between electrodes (Ω), and t represents the welding time (s).

[0023] As can be seen from the formula, the influence of current on heat generation is greater than that of resistance and time. Therefore, during the welding process, the current is a parameter that must be strictly controlled. The main reasons for the change in current are the fluctuation of the grid voltage and the change in the secondary circuit impedance of the AC welding machine. In addition to the total welding current, the current density also has a significant effect on heating.

[0024] In order to ensure the size of the weld nugget and the strength of the weld, the welding time and welding current can complement each other within a certain range. In order to obtain a weld of a certain strength, a high current and a short time can be used, or a low current and a long time can be used. In this way, we choose to use a high-power, high-performance resistance welding machine to ensure the strength of the weld.

[0025] The electrode pressure has a significant effect on the total resistance R between the two electrodes. As the electrode pressure increases, R decreases significantly. At this time, although the welding current increases slightly, it cannot affect the reduction in heat generation caused by the reduction in R. Therefore, the welding strength always decreases with the increase in electrode pressure. While increasing the electrode pressure, increasing the welding current or extending the welding time to compensate for the effect of the reduced resistance can keep the strength of the weld unchanged. In addition, the electrode is made of forged copper plate (beryllium copper), which is wear-resistant, strong and elastic, so that a high-quality welding head is obtained and the welding quality is improved.

[0026] The selection of the above-mentioned various drive structures mainly considers the welding accuracy of the present invention, for example, the traditional spindle speed adjustment includes transmissions such as gearboxes and pulleys, but compared with the servo motor screw drive, none of them can achieve the accuracy of the servo motor screw, and the servo motor drive can achieve stepless speed regulation, so it is an excellent drive choice. Therefore, after comprehensively considering various factors, the power drive structure selects the servo motor drive to ensure the weld seam accuracy and welding accuracy.

[0027] As for the conductive structure of the mold, due to the high welding accuracy requirements, the mounting mold must be installed on the corresponding high-precision bearings (high-precision bearings are installed in the negative electrode spindle frame, and the negative electrode spindle is installed in the high-precision bearings). This ensures that during the rotational motion, the axial runout and radial movement of the mounting mold are controlled within a reasonable error range (for example, once axial runout and radial movement occur, the accuracy of the welded wedge wire mesh cannot be guaranteed at all relative to the mounting mold with a diameter of about 1 meter), so as to meet the high-precision design requirements, thereby ensuring the welding seam accuracy and welding accuracy.

[0028] In order to have a better human-machine interface and facilitate the input of various control parameters, a PLC human-machine exchange device is used to input various parameters, and electrical control buttons are equipped to complete the design of the entire control system operation panel.

[0029] According to the above functional requirements, the control system panel mainly includes the start / stop switch button, automatic / manual button, etc., and also includes the PLC human-machine interaction device. All control parameters of the PLC can be input through the human-machine interaction device, and after pressing the automatic button on the control panel, automatic welding can be performed according to the set parameters.

[0030] When in use, various parameters of the welding head, such as welding line speed, gap size, etc., are input through the PLC human-computer interaction device, and then the automatic or manual operation of the welding head and the start of the resistance welding machine are controlled through the buttons on the operation panel. Finally, the operation of the above-mentioned servo motors is adjusted by controlling the frequency converter through the PLC, so that the welding of Johnson mesh with different parameters can be realized.

[0031] The design of the entire control system is based on simple operation, adopts the principle of systematization and modularization, realizes a good human-machine interface, and encapsulates the specific control algorithm process in the PLC calculation program, which is convenient for operators to adjust the welding head. The basic operation of this control technology is as above, and no detailed description will be given here.

[0032] In addition, the adjustment of various parameters such as the current size and power-on time during the welding process of the above-mentioned resistance welding machine can be directly adjusted on its own control cabinet. It is only necessary to connect the start and stop switch of the resistance welding machine to the entire control system, and control the start and stop of the resistance welding machine on the operation panel of the wedge wire mesh welding machine, thereby improving the accuracy.

[0033] like Figure 3 As shown in , preferably, the positive electrode conductive member and the negative electrode conductive member are both electrode plate structures. Preferably, the copper wheel 6 is a beryllium copper wheel. The copper wheels currently used are ordinary copper wheels, which are easy to deform, lack elasticity, and are not wear-resistant. The present invention is designed to use a forged copper wheel, i.e., a beryllium copper wheel, which has unchanged current transmission performance, is wear-resistant and elastic, and is not easy to deform. It is not easy to deform the copper wheel electrode, and the copper wheel ellipse is controlled, thereby ensuring that the welding accuracy required by the design is achieved, which will greatly reduce the cost of use, improve work efficiency, and at the same time provide a guarantee for the overall welding seam accuracy and welding accuracy.

[0034] like Figure 3 and Figure 5 and Figure 7 As shown in, further, in the present embodiment, in order to adjust the pressure of the positive electrode conductive structure on the wire winding 23 (that is, the pressure of the copper wheel 6) and to ensure that it does not loosen during the welding process, the above-mentioned vertical pressure adjustment self-locking structure includes a vertical reciprocating drive structure 7 (preferably a cylinder), a vertical sliding connection 8 and a vertical adjustment frame 9, the vertical reciprocating drive structure 7 is arranged on the welding frame 2, the vertical sliding connection 8 is slidably arranged on the welding frame 2, the output end of the vertical reciprocating drive structure 7 is connected to the vertical sliding connection 8, the vertical sliding connection 8 is connected to the vertical adjustment frame 9, and the vertical adjustment frame 9 is connected to the positive electrode main shaft frame 36.

[0035] In order to achieve the accuracy of vertical and horizontal adjustment positions, this embodiment also includes a vertical fine-tuning structure and a horizontal fine-tuning structure, such as Figure 3 As shown in the figure, the vertical fine-tuning structure includes a vertical fine-tuning base 10 and a vertical fine-tuning screw 11. The vertical fine-tuning base 10 is arranged on the vertical sliding connection 8. The vertical fine-tuning screw 11 is threadedly connected to the vertical fine-tuning base 10. The vertical fine-tuning screw 11 is connected to the vertical adjustment frame 9 for fine-tuning the vertical position of the vertical adjustment frame 9.

[0036] like Figure 3 As shown in the figure, the lateral fine-tuning structure includes a lateral fine-tuning base 12 and a lateral fine-tuning screw 13. The lateral fine-tuning base 12 is arranged on the vertical adjustment frame 9. The lateral fine-tuning screw 13 is threadedly connected to the lateral fine-tuning base 12, and the lateral fine-tuning screw 13 is connected to the positive electrode main shaft frame 36.

[0037] In this embodiment, a self-locking structure is also included for locking the vertical position of the vertical sliding connector 8, thereby locking the vertical position of the copper wheel 6. Preferably, the self-locking structure of the present invention is a reducer, and the rotation of the vertical fine-tuning screw 11 is adjusted by the reducer, so that not only the vertical linear movement of the copper wheel 6 can be finely adjusted, that is, the pressure applied by the copper wheel 6 on the wire winding 23 can be adjusted, but also the self-locking function can be prevented to prevent the copper wheel from being unstable in the vertical position, thereby ensuring the weld accuracy and welding accuracy of subsequent welding.

[0038] In the present invention, the influence of the welding electrode pressure on the welding quality is very large, so the adjustment of the welding electrode pressure is very important. Figure 3 As shown in , after the cylinder moves up and down through the compressed air stop valve 37 to set the pressure, the air valve is locked and then the vertical fine-tuning screw 11 is used to increase or decrease the pressure applied by the copper wheel 6 electrode between the two electrodes. At the same time, the negative electrode spindle 34 rotates, and the positive electrode spindle driving structure 4 drives the positive electrode spindle 5 to rotate, and then fine-tunes the horizontal fine-tuning screw 13 to a suitable position. At this time, the copper wheel 6 has contacted the wire 23 on the wire support rod 22 and will no longer swing. In addition, under the action of the cylinder, the pressure applied between the electrodes will tend to be stable, thereby improving the welding quality.

[0039] Preferably, if Figure 1 and Figure 6 As shown in the figure, the transverse sliding structure includes a slide rail 25 arranged on a base 24, a transverse reciprocating drive structure 26 (preferably a screw servo motor), a reciprocating transmission structure 27 (preferably a screw transmission structure) and a sliding traction frame 28. The sliding traction frame 28 is slidably arranged on the slide rail 25 and is connected to the reciprocating transmission structure 27. The reciprocating transmission structure 27 is driven by the transverse reciprocating drive structure 26, and the sliding traction frame 28 is connected to the traction mold 20.

[0040] like Figure 2 As shown in , in order to realize the straightening and positioning guide feeding of the wire winding 23, the implementation of the present invention also includes a wire winding straightening structure 29 and an auxiliary guide wire feeding structure 30. The wire winding straightening structure 29 includes a first group of straightening rollers and a second group of straightening rollers arranged relatively to each other, and a straightening seam for the wire winding to be inserted and straightened is formed between the first group of straightening rollers and the second group of straightening rollers. The straightening of the wire winding 23 can adopt a mature straightening scheme. Common straightening methods include: cold press straightening, hot straightening, hot spot straightening, pressurized back-inflammation straightening, tempering residual heat straightening, and counterattack straightening. Among these straightening methods, there are corresponding mature straightening structures. Therefore, after we select a suitable straightening method, we can select a corresponding straightening structure for improvement to adapt to the wedge wire mesh making machine.

[0041] Considering that the winding wire is stainless steel wire with small diameter, simple shape, relatively low hardness and relatively good straightness, cold pressing straightening can be selected, using the structure of a steel bar straightening machine for straightening.

[0042] The auxiliary guide wire feeding structure 30 includes a guide seat and a guide hole set on the guide seat. After the wire 23 is straightened, it passes through the guide hole until it is introduced onto the wire support rod 22. The guide mechanism of the wire after straightening is relatively simple, because the wire has been straightened at this time, and there is a tensile stress during the welding process, so only a mechanism similar to a cylinder is needed to realize the directional auxiliary guidance. Figure 2 In order to adjust the vertical position of the wire straightening structure 29 and the auxiliary guide wire feeding structure 30 for ease of use, the embodiment of the present invention further includes a wire straightening structure lifting structure 31, which is slidably disposed on the welding frame 2 and is connected to the wire straightening structure 29 and the auxiliary guide wire feeding structure 30 through a support frame.

Claims

1. A mesh making machine, comprising a resistance welding machine and a base, wherein the base is provided with a transverse sliding structure, characterized in that: Also includes: A welding head, the welding head comprising a welding frame, a positive electrode conductive structure, and a negative electrode conductive structure, the welding frame being provided with a vertical pressure regulating self-locking structure; The positive electrode conductive structure comprises a vertically arranged positive electrode conductive member, a positive electrode main shaft driving structure, a horizontally arranged positive electrode main shaft, a positive electrode main shaft frame, a positive electrode carbon brush and a copper wheel; one end of the positive electrode conductive member is connected to the positive electrode of the resistance welding machine, and the other end is connected to the positive electrode main shaft frame, the positive electrode carbon brush is arranged on the positive electrode main shaft frame and is conductively connected to the positive electrode conductive member, the positive electrode main shaft is rotatably arranged on the positive electrode main shaft frame and is driven to rotate by the positive electrode main shaft driving structure, and the copper wheel is arranged on the positive electrode main shaft; The output end of the vertical pressure regulating self-locking structure is connected to the positive electrode main shaft frame and is used to adjust the up and down position of the positive electrode main shaft frame to adjust the up and down pressure of the copper wheel; The negative electrode conductive structure includes a vertically arranged negative electrode conductive member, a negative electrode spindle driving structure, a horizontally arranged negative electrode spindle, a negative electrode spindle frame, a negative electrode carbon brush and a mold conductive structure; one end of the negative electrode conductive member is connected to the negative electrode of the resistance welding machine, and the other end is connected to the negative electrode spindle frame, the negative electrode carbon brush is arranged on the negative electrode spindle frame and is conductively connected to the negative electrode conductive member, the negative electrode spindle is a hollow shaft, the negative electrode spindle is rotatably arranged on the negative electrode spindle frame and is driven to rotate by the negative electrode spindle driving structure; The conductive structure of the mold includes a mounting mold, a traction mold, and a traction mold main shaft driving structure located below the copper wheel; the mounting mold is arranged at one end of the negative electrode main shaft, and a mounting hole for passing a wire winding support rod is provided on the mounting mold. The wire winding support rod passes through the negative electrode main shaft and the mounting hole in sequence, and the wire winding support rods are arranged at intervals to form a cylindrical shape. The wire winding support rod passing through the mounting hole is connected to the traction mold, and the negative electrode main shaft drives the mounting mold and the wire winding support rod thereon to rotate; the traction mold main shaft driving structure drives the traction mold to rotate; When the positive electrode conductive structure and the negative electrode conductive structure are energized, and the rotating copper wheel contacts the rotating wire winding support rod and the wire winding thereon to form a connection and conduction between the positive and negative electrodes, the high temperature melting in the resistance welding is generated, and the pressure of the copper wheel is added to weld the wire winding support rod and the wire winding thereon thereto into shape; The traction die is connected to the transverse sliding structure. When the negative electrode main shaft drives the wire winding support rod on the installation die to rotate, the transverse sliding structure synchronously drives the wire winding support rod to move laterally according to the required pitch, so that the wire winding on the wire winding support rod is finally formed into a spirally welded mesh cylinder during the welding process. A control system, wherein the positive electrode spindle drive structure, the negative electrode spindle drive structure, and the traction mold spindle drive structure are electrically connected to the control system respectively.

2. The net making machine according to claim 1, characterized in that: The vertical pressure adjustment self-locking structure includes a vertical reciprocating drive structure, a vertical sliding connection and a vertical adjustment frame. The vertical reciprocating drive structure is arranged on the welding frame, and the vertical sliding connection is slidably arranged on the welding frame. The output end of the vertical reciprocating drive structure is connected to the vertical sliding connection, the vertical sliding connection is connected to the vertical adjustment frame, and the vertical adjustment frame is connected to the positive electrode main shaft frame.

3. The net making machine according to claim 2, characterized in that: It also includes a vertical fine-tuning structure, which includes a vertical fine-tuning base and a vertical fine-tuning screw. The vertical fine-tuning base is arranged on the vertical sliding connection, the vertical fine-tuning screw is threadedly connected to the vertical fine-tuning base, and the vertical fine-tuning screw is connected to the vertical adjustment frame for fine-tuning the vertical position of the vertical adjustment frame.

4. The net making machine according to claim 2, characterized in that: It also includes a lateral fine-tuning structure, which includes a lateral fine-tuning base and a lateral fine-tuning screw. The lateral fine-tuning base is arranged on the vertical adjustment frame, the lateral fine-tuning screw is threadedly connected to the lateral fine-tuning base, and the lateral fine-tuning screw is connected to the positive electrode main shaft frame.

5. The net making machine according to claim 2, characterized in that: It also includes a self-locking structure for locking the vertically moving position of the vertical sliding connector.

6. The net making machine according to claim 1, characterized in that: The transverse sliding structure includes a slide rail, a transverse reciprocating drive structure, a reciprocating transmission structure and a sliding traction frame arranged on the base. The sliding traction frame is slidably arranged on the slide rail and connected to the reciprocating transmission structure. The reciprocating transmission structure is driven by the transverse reciprocating drive structure. The sliding traction frame is connected to the traction mold.

7. The net making machine according to claim 1, characterized in that: The invention also comprises a wire straightening structure and an auxiliary wire guiding structure, wherein the wire straightening structure comprises a first group of straightening rollers and a second group of straightening rollers arranged opposite to each other, and a straightening slit for passing the wires through and straightening them is formed between the first group of straightening rollers and the second group of straightening rollers; The auxiliary wire-guiding structure comprises a guide seat and a guide hole arranged on the guide seat. After the wire is straightened, it is passed into the guide hole until it is introduced onto the wire-winding support rod.

8. The net making machine according to claim 7, characterized in that: It also includes a wire winding straightening structure lifting structure, which is slidably arranged on the welding frame, and the wire winding straightening structure lifting structure is respectively connected to the wire winding straightening structure and the auxiliary guide wire feeding structure through a support frame.

9. The net making machine according to any one of claims 1 to 8, characterized in that: The positive electrode conductive member and the negative electrode conductive member are both electrode plate structures.

10. The net making machine according to claim 9, characterized in that: The copper wheel is a beryllium copper wheel.

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