Forming device for tube stock

Abstract

The present application relates to the technical field of pipe material, in particular to a pipe material forming device, which comprises: a cutting mechanism, provided with a preheating cavity and a cutting knife; the preheating cavity is suitable for accommodating a pipe material to be cut; the cutting knife has a first position for cutting the part of the pipe material to be cut exposed from the preheating cavity and a second position for returning; after the part of the pipe material to be cut exposed from the preheating cavity is cut by the cutting knife, the part of the pipe material to be cut located in the preheating cavity is an initial pipe material; a pressing mechanism, provided with a fixing cavity and a pressing part; the fixing cavity is suitable for accommodating a part of the initial pipe material; the pressing part is suitable for abutting against another part of the initial pipe material and causing relative bending between the two parts of the initial pipe material. Only the corresponding pipe material needs to be put in by the technician, and the remaining forming steps are automatically completed by the forming device, thereby improving the work efficiency, improving the yield and reducing the production cost.

Description

Technical Field

[0001] This invention relates to the field of pipe technology, and more specifically to a pipe forming apparatus. Background Technology

[0002] Currently, when technicians process hose parts, they need to manually handle the hose parts. For example, they need to manually cut the hose raw material into hose parts of a predetermined length, then use a bending tool to bend the hose parts, and finally place the formed hose parts to the predetermined output station for output.

[0003] Because the entire process requires manual handling by technicians, overall work efficiency is low. Furthermore, the yield rate of hose parts is significantly influenced by the experience of the technicians; less experience results in a lower yield rate, leading to higher production costs. Summary of the Invention

[0004] In view of this, the present invention provides a tube forming apparatus to solve the problems of low overall work efficiency and the yield of hose parts being affected by the experience of technicians.

[0005] In a first aspect, the present invention provides a tube forming apparatus, the forming apparatus comprising:

[0006] The cutting mechanism includes a preheating chamber and a cutting blade; the preheating chamber is adapted to accommodate the pipe material to be cut; when the cutting blade is in motion, it has a first position for cutting the portion of the pipe material to be cut that is exposed in the preheating chamber and a second position for returning to its original position; after the cutting blade cuts the portion of the pipe material to be cut that is exposed in the preheating chamber, the portion of the pipe material to be cut located in the preheating chamber is the initial pipe material;

[0007] The pressing mechanism is provided with a fixed cavity and a pressing part; the fixed cavity is adapted to accommodate a part of the initial tube material; when the pressing part is active, it abuts against another part of the initial tube material and causes relative bending between the two parts of the initial tube material.

[0008] Beneficial Effects: This invention, through the inclusion of a cutting mechanism and a pressing mechanism, allows for the preheating of the pipe material before forming. The material is first placed in a preheating chamber for preheating. Once preheating is achieved, the cutting blade automatically cuts the material without manual intervention. Simultaneously, the cut initial pipe material is placed into the pressing mechanism, which automatically presses it together, forming the pipe. Using this forming device, only the technician needs to place the corresponding pipe material into the cutting and pressing mechanisms; the remaining forming steps are automatically completed, significantly improving work efficiency. Furthermore, the automatic forming of the initial pipe material results in a much higher yield compared to manual labor, thus significantly reducing production costs. Moreover, the device eliminates the need for technicians with limited experience, allowing even those without experience to complete the work smoothly, reducing labor costs.

[0009] In one optional implementation, the cutting mechanism includes:

[0010] A preheating assembly is provided with a preheating chamber; the tube material to be cut is adapted to be inserted into the preheating chamber;

[0011] A cutting assembly is disposed on the preheating assembly; the cutting assembly is provided with a driving part, and the driving part is provided with the cutting blade, the cutting blade is located at the end of the preheating chamber and along the insertion direction of the tube to be cut, the cutting blade is located upstream of the preheating chamber;

[0012] Under the driving action of the drive unit, the cutting blade has the first position and the second position when it is in motion.

[0013] Beneficial effects: By incorporating a preheating component, this embodiment of the invention allows technicians to insert the pipe material to be cut into the preheating chamber for preheating before cutting. After being heated to a certain temperature, the pipe material softens, making it easier for the cutting blade to cut and improving cutting efficiency. Furthermore, it reduces wear on the cutting blade during the cutting process, thereby extending its service life.

[0014] In one optional implementation, the preheating component includes:

[0015] The preheating support is equipped with a temperature controller.

[0016] A first preheating block is disposed on the preheating support and is communicatively connected to the temperature controller; a first preheating groove is formed in the first preheating block.

[0017] The second preheating block is movably disposed on the first preheating block and is communicatively connected to the temperature controller; the second preheating block has a second preheating groove.

[0018] When the second preheating block moves away from the first preheating block, the pipe material to be cut is put into the first preheating tank or the initial pipe material is taken out from the first preheating tank; when the second preheating block moves closer to the first preheating block, the first preheating tank and the second preheating tank surround each other to form the preheating cavity;

[0019] A first heating circuit is disposed in the first preheating block and the second preheating block; the first heating circuit is provided with a heating resistor, which is energized and heated by a four-wire connection.

[0020] A second heating circuit is disposed in the first preheating block and the second preheating block; after the first preheating block and the second preheating block are closed, heating is performed by generating an electric arc through the second heating circuit.

[0021] The first preheating block and the second preheating block have a first mode of heating with the first heating circuit and a second mode of heating with the second heating circuit.

[0022] Beneficial Effects: By incorporating a temperature controller, this invention allows technicians to select the appropriate heating circuit and preheating temperature based on the specific material type of the tube to be cut after placing it into the preheating chamber. For example, when the tube is plastic, the required heat is lower, so a first heating circuit and a heating temperature corresponding to plastic can be selected. When the tube is metal, the required heat is higher, so a second heating circuit and a heating temperature corresponding to metal can be selected, ensuring proper preheating and cutting of the tube, and guaranteeing the normal operation of the workflow.

[0023] In one optional implementation, the cutting component includes:

[0024] A cutting cylinder is mounted on the preheating assembly; the cutting cylinder is equipped with a drive unit.

[0025] The cutting blade is mounted on the drive unit and located on the side close to the tube material to be cut.

[0026] In one optional embodiment, the cutting mechanism further includes:

[0027] A conveying assembly is adapted to convey the pipe material to be cut; the conveying assembly is located upstream of the preheating assembly along the conveying direction of the pipe material to be cut, and conveys the pipe material to be cut into the preheating chamber.

[0028] Beneficial effects: By incorporating a conveying assembly, this invention eliminates the need for technicians to manually place the pipe material to be cut into the preheating chamber during the feeding process. The conveying assembly directly transports the pipe material to the preheating chamber for preheating. After preheating, the cutting blade automatically cuts the pipe material to form initial pipe material. Subsequently, after the technician removes the initial pipe material from the preheating chamber, the conveying assembly and cutting blade resume their automatic operation, thereby reducing the number of steps required from the technician and significantly improving work efficiency.

[0029] In one alternative implementation, the conveying assembly includes:

[0030] A base support is disposed on one side of the preheating assembly;

[0031] Multiple sets of conveying rollers are mounted on the base support; the multiple sets of conveying rollers are arranged along the conveying direction of the tube material to be cut;

[0032] Each set of conveyor rollers includes two spaced-apart conveyor rollers, which together form a conveying channel suitable for conveying the pipe material to be cut on their close-to-each end faces.

[0033] Beneficial effects: By forming a conveying channel by two conveying wheels, the pipe material to be cut cannot leave the conveying channel during the conveying process, thus ensuring stable transportation along the conveying channel and guaranteeing the stability of the feeding process during the overall operation, so that the forming device can operate stably as a whole.

[0034] In one optional embodiment, the pressing mechanism includes:

[0035] A fixed support is provided with a fixed groove and a fixed block, the fixed block being movably disposed on the fixed groove; when the fixed block is engaged with the fixed groove, the fixed block and the fixed groove surround to form the fixed cavity; when the fixed block is removed from the fixed groove, the fixed cavity is opened.

[0036] A first pressing block is disposed on one side of the fixing groove; an angle is formed between the extending direction of the first pressing block and the extending direction of the fixing cavity;

[0037] The second pressing block is movably disposed relative to the fixed support; the second pressing block has a pressing position close to and abutting against the first pressing block and a storage position away from the first pressing block;

[0038] The first pressing block and the second pressing block are heated during pressing.

[0039] Beneficial effects: In this embodiment of the invention, by setting a first pressing block and a second pressing block, a portion of the initial tubing material is located in the fixed cavity, while the other portion is located outside the fixed cavity. During pressing, the first and second pressing blocks automatically press the initial tubing material, causing the two portions of the initial tubing material to bend, thereby automatically forming the initial tubing material into a tubing part. After forming, the first and second pressing blocks automatically separate, and technicians can manually remove the formed tubing part from the first pressing block, thus directly unloading the formed tubing part.

[0040] In one optional embodiment, the pressing mechanism further includes:

[0041] A movable component is provided with a worktable and a movable support, the movable support being movably mounted on the worktable, and the fixed support being installed on the worktable;

[0042] A final pressure cylinder is mounted on the movable support; the drive end of the final pressure cylinder is connected to the second pressing block.

[0043] The movable bracket drives the second pressing block to switch between the pressing position and the storage position; when the second pressing block is in the pressing position, the final pressure cylinder drives the second pressing block to continue moving closer to the first pressing block.

[0044] Beneficial effects: By setting a final pressure cylinder, the initial tube material can be pressed again after the initial tube material is pressed, and the initial tube material is over-pressed. This prevents the initial tube material from experiencing memory springback after the initial pressing, and ensures that the two parts of the initial tube material can maintain their bending state. This prevents the finished product from being defective due to material memory springback.

[0045] In one alternative implementation, the moving component further includes:

[0046] A movable guide rail is laid on the workbench;

[0047] A slider is slidably mounted on the movable guide rail; the slider is provided with the movable bracket, and when the movable bracket slides on the movable guide rail, it has a first position close to the fixed support and a second position far away from the fixed support; when the movable bracket is in the first position, it drives the second pressing block to switch between the pressing position and the storage position;

[0048] A drive cylinder is mounted on the worktable; the power output end of the drive cylinder is connected to the slider.

[0049] Beneficial effects: By setting up a movable guide rail and a slider, when the initial tube material needs to be pressed, the movable support is driven to allow the second pressing block to properly cooperate with the first pressing block, thereby completing the work. Upon completion of pressing, to prevent the movable support and the second pressing block from obstructing technicians from removing the formed tube parts, the slider can be used to directly move the movable support and the second pressing block away from the first pressing block, thus facilitating normal operation by technicians.

[0050] In one alternative implementation, the moving component further includes:

[0051] A positioning cylinder is provided on the worktable; the positioning cylinder is provided with a positioning end, which positions the slider after contacting the slider.

[0052] Beneficial effects: By setting a positioning cylinder, the embodiments of the present invention can ensure that the moving bracket and the second pressing block operate in the designated position, thereby preventing the slider from moving due to vibration or shaking of the worktable during the pressing process, which would cause the second pressing block and the first pressing block to become misaligned. Therefore, it can ensure the normal forming of the tube parts and improve the yield. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0054] Figure 1 This is a schematic diagram of the overall structure of a tube forming device according to an embodiment of the present invention;

[0055] Figure 2 for Figure 1 A schematic diagram of the cutting mechanism when the tube to be cut is placed in it;

[0056] Figure 3 for Figure 2 A schematic diagram of the cutting mechanism preheating the tube material to be cut;

[0057] Figure 4 This is a schematic diagram of the cutting component in an embodiment of the present invention;

[0058] Figure 5 This is a schematic diagram of the structure in which the initial pipe material is placed into the fixed support in an embodiment of the present invention;

[0059] Figure 6 This is a schematic diagram illustrating the movement of the second pressing block closer to the first pressing block in an embodiment of the present invention;

[0060] Figure 7 This is a schematic diagram illustrating the pressing of the second pressing block and the first pressing block in an embodiment of the present invention;

[0061] Figure 8 This is a schematic diagram of the operation of the final pressure cylinder in an embodiment of the present invention;

[0062] Figure 9 This is a schematic diagram of the structure on the workbench in the moving component in an embodiment of the present invention;

[0063] Figure 10 This is a circuit diagram of the four-wire wiring method in an embodiment of the present invention;

[0064] Figure 11 This is a circuit diagram for generating an electric arc in an embodiment of the present invention;

[0065] Figure 12 This is a circuit diagram of the transistor pulse power supply in an embodiment of the present invention.

[0066] Explanation of reference numerals in the attached figures:

[0067] 1. Cutting mechanism;

[0068] 11. Preheating assembly; 111. Preheating support; 112. Temperature controller; 113. First preheating block; 114. Second preheating block;

[0069] 12. Cutting assembly; 121. Cutting cylinder; 122. Cutting blade;

[0070] 13. Conveying assembly; 131. Base support; 132. Conveying roller assembly; 1321. Conveying wheel;

[0071] 2. Pressing mechanism;

[0072] 21. Fixed support; 22. First pressing block; 23. Second pressing block;

[0073] 24. Moving component; 241. Moving guide rail; 242. Slider; 243. Drive cylinder; 244. Positioning cylinder; 245. Worktable; 246. Moving support;

[0074] 25. Final pressure cylinder; 26. Fixing block;

[0075] R, heating resistor; R1, primary resistor; C, capacitor; Vt, thyristor; L1, primary inductor; L2, secondary inductor; T1, step-up transformer; T2, coupling transformer; Ck, secondary capacitor; T, step-down transformer; Z, rectifier; Trs, transistor bank; Cz, capacitor bank. Detailed Implementation

[0076] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0077] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0078] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0079] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0080] Currently, when forming hose parts, technicians need to perform manual processing. For example, they must first manually cut the hose raw material into hose parts of a predetermined length, then use a bending tool to bend the hose parts, and finally place the formed hose parts into a designated output station for output. Because the entire process requires manual processing by technicians, the overall work efficiency is low. Furthermore, the yield rate of hose parts is greatly affected by the experience of the technicians. When technicians have less experience, the yield rate of hose parts is lower, resulting in higher production costs for hose parts.

[0081] In view of this, the present invention provides a tube forming apparatus to solve the problems of low overall work efficiency and the yield of hose parts being affected by the experience of technicians.

[0082] The following is combined with Figures 1 to 12 The following describes embodiments of the present invention.

[0083] According to an embodiment of the present invention, in one aspect, a forming apparatus for tubular material is provided, the forming apparatus including a cutting mechanism 1 and a pressing mechanism 2.

[0084] Specifically, in embodiments of the present invention, such as Figure 1 As shown, the cutting mechanism 1 is equipped with a preheating chamber and a cutting blade 122. The preheating chamber is suitable for accommodating the pipe material to be cut. Regarding the specific placement method of the pipe material to be cut in the preheating chamber, it can be manually placed into the preheating chamber by a technician, or it can be placed into the preheating chamber automatically by an automated conveying device. Of course, this embodiment is merely an example of how the pipe material to be cut can be placed, and it is not intended to limit the method. Those skilled in the art can modify it according to actual circumstances, as long as the same technical effect is achieved.

[0085] Furthermore, when the cutting blade 122 is active, it has a first position for cutting the portion of the tube material exposed in the preheating cavity and a second position for returning to its original position. That is, the tube material to be cut is the original tube material of its entire length. After the tube material to be cut is inserted into the preheating cavity, only the portion located in the preheating cavity needs to be made into a tube part, while the portion located outside the preheating cavity needs to be cut and separated.

[0086] In actual operation, after the cutting blade 122 cuts the part of the tube material to be cut that is exposed in the preheating cavity, that is, after cutting the part outside the preheating cavity, the part of the tube material to be cut that is located in the preheating cavity is the initial tube material. Then, the technicians manually place the initial tube material into the pressing mechanism 2, or the initial tube material can be placed into the pressing mechanism 2 by an automatic conveying device. Finally, the pressing mechanism 2 makes the initial tube material into tube parts.

[0087] Furthermore, in this embodiment of the invention, the pressing mechanism 2 is provided with a fixed cavity and a pressing part. Specifically, the fixed cavity is adapted to accommodate a portion of the initial tubing, and the pressing part, when in motion, abuts against another portion of the initial tubing and causes relative bending between the two portions of the initial tubing. That is, the pressing mechanism 2 needs to bend the initial tubing as a whole. The initial tubing is divided into two parts: the first part is located in the fixed cavity, and the other part is located outside the fixed cavity. When the pressing mechanism 2 performs pressing, the portion of the initial tubing located outside the fixed cavity will be bent relative to the portion of the initial tubing in the fixed cavity. Typically, the initial tubing is bent into an L-shape, that is, a right-angled tubing.

[0088] After the initial tubular material is pressed to form the tubular part, the part can be manually removed by technicians for unloading, or it can be automatically removed by mechanical equipment. Of course, this embodiment is merely an example of the unloading method and is not intended to limit the process; those skilled in the art can modify it according to actual circumstances.

[0089] With this configuration, this embodiment of the invention, by setting up a cutting mechanism 1 and a pressing mechanism 2, allows the pipe material to be preheated in a preheating chamber before forming. Once the preheating conditions are met, the technician activates the cutting blade 122, which automatically cuts the pipe material without manual operation. Simultaneously, the technician places the cut initial pipe material into the pressing mechanism 2, which automatically presses the initial pipe material through its pressing section, thus forming the pipe. Using the pipe forming device of this invention, only the technician needs to place the corresponding pipe material into the cutting mechanism 1 and the pressing mechanism 2; the remaining forming steps are automatically completed by the forming device, significantly improving work efficiency. Furthermore, the forming device automatically forms the initial pipe material, resulting in a significantly higher yield rate compared to manual operation, thus greatly reducing production costs. Moreover, using the forming device eliminates the need for technicians with limited experience; even inexperienced technicians can successfully complete the work, reducing labor costs.

[0090] Furthermore, in an alternative implementation, such as Figure 2 As shown, the cutting mechanism 1 includes a preheating component 11 and a cutting component 12.

[0091] Specifically, in this embodiment of the invention, the preheating component 11 is provided with a preheating chamber, and the tube material to be cut is adapted to be inserted into the preheating chamber. The preheating component 11 can be electrically heated, but other heating methods can also be used, such as heating with a furnace or solar energy. This embodiment is merely an example.

[0092] Furthermore, the cutting assembly 12 is disposed on the preheating assembly 11. The cutting assembly 12 is provided with a driving part, and the cutting blade 122 is disposed on the driving part. The cutting blade 122 is located at the end of the preheating chamber and upstream of the preheating chamber along the insertion direction of the tube material to be cut. Under the driving action of the driving part, the cutting blade 122 has the first position and the second position when it is in motion.

[0093] With this configuration, this embodiment of the invention, by incorporating the preheating component 11, allows technicians to insert the pipe material to be cut into the preheating chamber for preheating before cutting. After being heated to a certain temperature, the pipe material softens, making it easier for the cutting blade 122 to cut, thus improving cutting efficiency. Furthermore, it reduces the wear and tear on the cutting blade 122 during the cutting process, thereby extending its service life.

[0094] Furthermore, in an alternative implementation, such as Figure 2 As shown, the preheating assembly 11 includes a preheating support 111, a first preheating block 113, and a second preheating block 114. Specifically, in this embodiment of the invention, the preheating support 111 is equipped with a temperature controller 112, the first preheating block 113 is disposed on the preheating support 111 and is communicatively connected to the temperature controller 112, and a first preheating groove is formed in the first preheating block 113. The second preheating block 114 is movably disposed on the first preheating block 113 and is communicatively connected to the temperature controller 112, and a second preheating groove is formed in the second preheating block 114.

[0095] In practical applications, when the second preheating block 114 moves away from the first preheating block 113, the pipe material to be cut is placed into the first preheating tank or the initial pipe material is taken out from the first preheating tank. When the second preheating block 114 moves closer to the first preheating block 113, the first preheating tank and the second preheating tank surround each other to form the preheating cavity.

[0096] Furthermore, in this embodiment of the invention, the preheating component 11 further includes a first heating circuit and a second heating circuit. Specifically, in this embodiment of the invention, the first heating circuit is disposed in the first preheating block 113 and the second preheating block 114, and the first heating circuit is provided with a heating resistor R, which is energized and heated through a four-wire connection. The second heating circuit is disposed in the first preheating block 113 and the second preheating block 114. After the first preheating block 113 and the second preheating block 114 are closed, heating is achieved by generating an electric arc through the second heating circuit.

[0097] The first preheating block 113 and the second preheating block 114 have a first mode of heating with the first heating circuit and a second mode of heating with the second heating circuit. That is, the first preheating block 113 and the second preheating block 114 can choose to be heated by the first heating circuit or by the second heating circuit.

[0098] Regarding the specific working principle of the first heating circuit, a known current I supplied by a constant current source flows through the heating resistor R, causing a voltage drop U. The potentiometer measures U, and Rt can then be obtained according to Rt = U / I. Figure 10 As can be seen, although the wires have resistance, the voltage drop on the wires through which current flows is outside the measurement range. Although the wires connecting the potentiometer have resistance, no current flows through them. Therefore, the resistance of all four wires has no effect on the measurement. As long as the current from the constant current source remains stable, the influence of the connecting wire resistance on the measurement can be eliminated.

[0099] If it is necessary to accurately measure the feedback current and calculate the heat, the lead must be drawn from the root of the heating resistor R, that is, from the inner lead, and not from the terminal of the junction box of the heating resistor R. This is because the inner lead is in a region of drastic temperature change. Although the inner lead in the protective tube is not long, its resistance effect cannot be ignored when measuring accurately.

[0100] Regarding the specific working principle of the second heating circuit, such as Figure 11 As shown, the secondary inductor L2 and the coupling transformer T2 form a spark discharge device. To illustrate the working principle of this novel high-frequency arc igniter, it can be divided into two parts, with the step-up transformer T1 as the boundary. The left half forms a medium-frequency pulse generator, and the right half forms a high-frequency pulse generator.

[0101] The main function of the intermediate frequency pulse generator is to convert the mains frequency sinusoidal voltage into an intermediate frequency pulse voltage. The rectified voltage output from the rectifier bridge charges capacitor C through the first resistor R1. When the charging voltage reaches the breakdown voltage of the Zener diode, the thyristor Vt quickly turns on. The charged capacitor C then undergoes electromagnetic oscillation with the primary inductance L1 of the step-up transformer T1. When the forward oscillation current flowing through thyristor Vt is less than its holding current, thyristor Vt turns off. Thus, a complete pulse voltage is formed across the primary inductance L1. At this point, because thyristor Vt is off, the rectified voltage output from the rectifier bridge again charges capacitor C through the first resistor R1. When the charging voltage again reaches the breakdown voltage of the Zener diode, thyristor Vt turns on again, and the recharged capacitor C again undergoes electromagnetic oscillation with the primary inductance L1. Similarly, when the forward oscillation current flowing through thyristor Vt is again less than its holding current, thyristor Vt turns off again. Thus, a complete pulse voltage is formed on the primary inductor L1. This process continues indefinitely, resulting in a mid-frequency pulse voltage on the primary inductor L1 with an amplitude equal to the breakdown voltage of the Zener diode. The frequency and pulse width are primarily determined by the Zener diode's breakdown voltage, the primary inductor L1, the capacitor C, and the first resistor R1.

[0102] The main function of the high-frequency pulse generator is to output a high-frequency voltage under the action of an intermediate-frequency pulse. The intermediate-frequency pulse voltage generated by the intermediate-frequency generator is stepped up by the intermediate-frequency step-up transformer T1, and then rapidly charges the secondary capacitor Ck through the secondary inductor L2 of the coupling transformer T2. When the charging voltage reaches the discharge voltage of the discharger, discharge occurs. The air gap of the discharger is close to an electrically short-circuited state. Therefore, the charged secondary capacitor Ck exchanges energy with the secondary inductor L2 through the gap, forming a high-frequency electromagnetic oscillation in the circuit. Coupled by the coupling transformer T2, a high-frequency high-voltage output is achieved. At this time, the upper and lower preheating blocks generate high temperatures, the frequency of which is mainly determined by the coupling transformer T2 and the secondary capacitor Ck.

[0103] In this embodiment of the invention, an analog transistor pulse power supply is used. Transistor welding power supplies are a new type of arc welding power supply with good performance, high control precision, and great flexibility. A high-power transistor group TRS is connected in series in the DC circuit of the silicon rectifier Z to enable stepless adjustment of voltage and current.

[0104] Transistor power supplies rely on high-power transistor arrays (Trs), electronic control circuits, and various closed-loop controls to obtain the required external characteristics, output voltage waveforms, and output current waveforms. The circuit schematic of an analog transistor pulse power supply is shown below. Figure 12 As shown, the analog transistor pulse power supply mainly consists of a step-down transformer T, a rectifier Z, a transistor bank TRS, a capacitor bank Cz, and electronic control circuitry. After step-down and rectification filtering, single-phase or three-phase voltages are fed by the high-power transistor bank TRS to obtain the required external characteristics and stepless regulation of voltage and current, thus supplying power to the electric arc. Besides filtering, the capacitor bank Cz primarily ensures balanced load distribution across the three phases during pulsed arc welding.

[0105] Since the heating current is a closed-loop control system, which is a discrete system containing both switching and analog signals, the high-order harmonics at the leading and trailing edges of the pulse current have a wide spectrum and generate radio frequency interference. Combined with the high-frequency, high-voltage signal generated by the high-frequency generator during arc ignition, this undoubtedly poses a significant interference to the entire closed-loop system. Furthermore, because the ICs on the control board are primarily CMOS chips, high-frequency protection in the circuitry is extremely important.

[0106] In this embodiment of the invention, anti-interference components, such as RC absorption and opto-isolation, are added at the high-frequency input. Control lines are kept away from components with large leakage flux, such as reactors, and should not be bundled together with power lines with large current. Weak signals, such as the feedback signal lines of shunts, need to be twisted to reduce differential-mode interference.

[0107] With this configuration, in this embodiment of the invention, by setting up a temperature controller 112, technicians can select the heating circuit and preheating temperature corresponding to the specific material type of the tube to be cut after placing it into the preheating chamber. For example, when the tube to be cut is plastic, the required heat is lower, so a first heating circuit and a heating temperature corresponding to plastic can be selected. When the tube to be cut is metal, the required heat is higher, so a second heating circuit and a heating temperature corresponding to metal can be selected, thereby ensuring that the tube to be cut can be preheated normally, can be cut normally, and that the workflow operates normally.

[0108] Furthermore, in an alternative implementation, such as Figure 4 As shown, the cutting assembly 12 includes a cutting cylinder 121 and a cutting blade 122. Specifically, in this embodiment of the invention, the cutting cylinder 121 is disposed on the preheating assembly 11, and the cutting cylinder 121 is provided with a driving unit. The cutting blade 122 is disposed on the driving unit and is located on the side close to the tube material to be cut.

[0109] Furthermore, in an alternative implementation, such as Figure 2 As shown, the cutting mechanism 1 further includes a conveying component 13, which is adapted to convey the pipe material to be cut. Along the conveying direction of the pipe material to be cut, the conveying component 13 is located upstream of the preheating component 11 and conveys the pipe material to be cut into the preheating chamber.

[0110] In this embodiment of the invention, the conveying component 13 can be a conveyor belt or a conveyor chain. Of course, this embodiment is merely an example illustrating the type of conveying component 13, and does not limit its application; those skilled in the art can make changes according to actual circumstances.

[0111] With this configuration, in this embodiment of the invention, by setting up the conveying component 13, during the material feeding process, technicians do not need to manually place the pipe material to be cut into the preheating chamber. The conveying component 13 can directly convey the pipe material to be cut into the preheating chamber for preheating. After preheating is completed, the cutting blade 122 automatically cuts the pipe material to be cut into initial pipe material. Subsequently, after the technicians remove the initial pipe material from the preheating chamber, the conveying component 13 and the cutting blade 122 continue to operate automatically, thereby reducing the number of manual steps for technicians and greatly improving work efficiency.

[0112] Furthermore, in an alternative implementation, such as Figure 2As shown, the conveying assembly 13 includes a base support 131 and a conveying roller assembly 132. Specifically, in this embodiment of the invention, the base support 131 is disposed on one side of the preheating assembly 11, and a plurality of conveying roller assemblies 132 are disposed on the base support 131; the plurality of conveying roller assemblies 132 are arranged along the conveying direction of the pipe material to be cut. Each conveying roller assembly 132 includes two spaced-apart conveying wheels 1321, and the two conveying wheels 1321 form a conveying channel suitable for conveying the pipe material to be cut on their adjacent end faces.

[0113] With this configuration, the embodiment of the present invention forms a conveying channel by having two conveying wheels 1321 enclose each other, so that the tube material to be cut cannot leave the conveying channel during the conveying process, thereby ensuring stable transportation along the conveying channel and guaranteeing the stability of the feeding process during the overall operation, so that the forming device as a whole can operate stably.

[0114] Further, in an optional embodiment, the pressing mechanism 2 includes a fixed support 21, a first pressing block 22, and a second pressing block 23. Specifically, in this embodiment of the invention, the fixed support 21 is provided with a fixing groove and a fixing block 26, the fixing block 26 being movably disposed on the fixing groove; when the fixing block 26 is engaged with the fixing groove, the fixing block 26 and the fixing groove surround to form the fixing cavity; when the fixing block 26 is removed from the fixing groove, the fixing cavity is opened.

[0115] Furthermore, in this embodiment of the invention, the first pressing block 22 is disposed on one side of the fixing groove, and an angle is formed between the extending direction of the first pressing block 22 and the extending direction of the fixing cavity. Typically, the size of the angle can be determined according to the specifications of the formed tubular part; for example, it can be 60 degrees or 90 degrees.

[0116] Furthermore, in this embodiment of the invention, the second pressing block 23 is movably disposed relative to the fixed support 21. The second pressing block 23 has a pressing position close to and abutting against the first pressing block 22, and a storage position away from the first pressing block 22. The first pressing block 22 and the second pressing block 23 are heated during pressing.

[0117] With this configuration, in this embodiment of the invention, by setting up a first pressing block 22 and a second pressing block 23, a portion of the initial tubular material is located in the fixed cavity, while the other portion is located outside the fixed cavity. During pressing, the first pressing block 22 and the second pressing block 23 can automatically press the initial tubular material, causing the two portions of the initial tubular material to bend, thereby automatically forming the initial tubular material into a tubular part. After forming, the first pressing block 22 and the second pressing block 23 automatically separate, and technicians can manually remove the formed tubular part from the first pressing block 22, thus directly unloading the formed tubular part.

[0118] Furthermore, in an alternative implementation, such as Figure 1 , Figures 6 to 8 As shown, the pressing mechanism 2 further includes a moving component 24 and a final pressure cylinder 25. Specifically, in this embodiment of the invention, the moving component 24 is provided with a worktable 245 and a moving support 246. The moving support 246 is movably mounted on the worktable 245, and the fixed support 21 is also installed on the worktable 245. The final pressure cylinder 25 is mounted on the moving support 246, and the driving end of the final pressure cylinder 25 is connected to the second pressing block 23. Furthermore, as... Figure 9 As shown, the workbench 245 is also equipped with a touch screen, which allows technicians to control the terminal.

[0119] In actual operation, the movable bracket 246 drives the second pressing block 23 to switch between the pressing position and the storage position. When the second pressing block 23 is in the pressing position, the final pressure cylinder 25 drives the second pressing block 23 to continue moving closer to the first pressing block 22.

[0120] With this configuration, the embodiment of the present invention, by setting the final pressure cylinder 25, can perform a second pressing on the initial tube material after the initial pressing, thereby over-pressing the initial tube material and preventing the initial tube material from experiencing memory springback due to its own material after the initial pressing. This ensures that the two parts of the initial tube material can maintain their bent state, preventing the finished product from being defective due to material memory springback in the formed tube parts.

[0121] Furthermore, the fixed support 21 and the worktable 245 can be either fixedly connected or detachably connected. For a fixed connection, welding, bonding, or other methods can be used. For a detachable connection, screws and screw holes, clips and slots, or magnetic attraction can be used for fixation.

[0122] The following provides examples of detachable connection methods. For instance, additional fixing plates can be provided on both sides of the worktable 245. Those skilled in the art can change the number of fixing plates according to actual needs, such as 1, 2, 3, 4, etc. Screw holes are then made on the fixing plates. Another screw hole is then made on the fixing support 21 at the corresponding screw hole position. Screws are then passed through the screw holes on the fixing plates and the fixing support 21 in sequence, thereby connecting the worktable 245 to the fixing support 21. Furthermore, when using a snap-fit ​​and slot method for fixing, snap-fits can be additionally provided on the worktable 245. Those skilled in the art can change the number of snap-fits according to actual needs, such as 1, 2, 3, 4, etc. Slots that can cooperate with the snap-fits are then made on the fixing support 21 at the corresponding snap-fit ​​positions. The snap-fits on the worktable 245 are then directly inserted into the slots on the fixing support 21, thereby connecting the worktable 245 to the fixing support 21. When fixing by magnetic attraction, a magnetic sheet can be additionally set on the worktable 245. Those skilled in the art can change the number of magnetic sheets according to the actual situation, such as 1, 2, 3, 4, etc. Then, a magnetic sheet of the opposite shape that can attract the magnetic sheet is made on the fixing support 21 at the position corresponding to the magnetic sheet. Then, the magnetic sheet on the worktable 245 is directly aligned with the magnetic sheet of the opposite shape embedded in the fixing support 21, thereby magnetically connecting the worktable 245 and the fixing support 21.

[0123] Of course, this embodiment is merely an example of fixed connection and detachable connection, but it does not limit the scope of the invention. Those skilled in the art can make changes according to the actual situation to achieve the same technical effect.

[0124] Furthermore, in an alternative implementation, such as Figure 9 As shown, the moving component 24 further includes a moving guide rail 241 and a slider 242. Specifically, in this embodiment of the invention, the moving guide rail 241 is laid on the worktable 245, the slider 242 is slidably disposed on the moving guide rail 241, and the moving bracket 246 is disposed on the slider 242.

[0125] In actual operation, when the movable bracket 246 slides on the movable guide rail 241, it has a first position close to the fixed support 21 and a second position away from the fixed support 21. When the movable bracket 246 is in the first position, it drives the second pressing block 23 to switch between the pressing position and the storage position. Further, in this embodiment of the invention, the drive cylinder 243 is disposed on the worktable 245, and the power output end of the drive cylinder 243 is connected to the slider 242.

[0126] With this configuration, in this embodiment of the invention, by setting up the movable guide rail 241 and the slider 242, when the initial tube material needs to be pressed, the movable support 246 is driven to allow the second pressing block 23 to properly engage with the first pressing block 22, thereby completing the work. Upon completion of pressing, to prevent the movable support 246 and the second pressing block 23 from obstructing the technician from removing the formed tube part, the slider 242 can directly move the movable support 246 and the second pressing block 23 away from the first pressing block 22, thus facilitating normal operation by the technician.

[0127] Furthermore, in an alternative implementation, such as Figure 9 As shown, the moving component 24 also includes a positioning cylinder 244, which is disposed on the worktable 245. The positioning cylinder 244 is provided with a positioning end, which positions the slider 242 after contacting the slider 242.

[0128] With this configuration, the present invention embodiment can ensure that the moving bracket 246 and the second pressing block 23 operate in the designated position by setting the positioning cylinder 244, thereby preventing the slider 242 from moving due to vibration or shaking of the worktable 245 during the pressing process, which would cause the second pressing block 23 and the first pressing block 22 to become misaligned. Therefore, it can ensure the normal forming of the tube parts and improve the yield.

[0129] Furthermore, in an optional embodiment, a first robotic arm and a second robotic arm may also be provided, with the first robotic arm being communicatively connected to the cutting mechanism 1 and the second robotic arm being communicatively connected to the pressing mechanism 2.

[0130] Specifically, in this embodiment of the invention, after the cutting mechanism 1 cuts the tube material to be cut, the cutting mechanism 1 automatically sends a control command to the first robotic arm, causing the first robotic arm to move automatically according to a predetermined workflow. Thus, the first robotic arm automatically places the initial tube material into the pressing mechanism 2, without manual operation by technicians. After sensing the initial tube material being placed in, the pressing mechanism 2 automatically presses it. After the tube part is formed, the pressing mechanism 2 automatically sends a control command to the second robotic arm, causing the second robotic arm to move automatically according to a predetermined workflow. The second robotic arm automatically picks up the formed tube part for unloading.

[0131] With this configuration, the tube forming device in this embodiment of the invention can achieve fully automated processing without the need for technical personnel, greatly improving work efficiency.

[0132] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A tube forming apparatus, characterized in that, include: The cutting mechanism (1) is provided with a preheating chamber and a cutting blade (122); the preheating chamber is adapted to accommodate the pipe material to be cut; when the cutting blade (122) is active, it has a first position for cutting the part of the pipe material to be cut that is exposed in the preheating chamber and a second position for returning to its original position; after the cutting blade (122) cuts the part of the pipe material to be cut that is exposed in the preheating chamber, the part of the pipe material to be cut located in the preheating chamber is the initial pipe material; The pressing mechanism (2) is provided with a fixed cavity and a pressing part; the fixed cavity is adapted to accommodate a part of the initial tube material; when the pressing part is in motion, it abuts against another part of the initial tube material and causes relative bending between the two parts of the initial tube material. The cutting mechanism (1) includes: The preheating assembly (11) is provided with a preheating chamber; the tube material to be cut is adapted to be inserted into the preheating chamber; The preheating component (11) includes: The preheating support (111) is equipped with a temperature controller (112). The first preheating block (113) is disposed on the preheating support (111) and is communicatively connected to the temperature controller (112); a first preheating groove is provided in the first preheating block (113); The second preheating block (114) is movably disposed on the first preheating block (113) and is communicatively connected to the temperature controller (112); a second preheating groove is provided in the second preheating block (114); When the second preheating block (114) moves away from the first preheating block (113), the pipe material to be cut is put into the first preheating tank or the initial pipe material is taken out from the first preheating tank; when the second preheating block (114) moves close to the first preheating block (113), the first preheating tank and the second preheating tank surround each other to form the preheating cavity; A first heating circuit is provided in the first preheating block (113) and the second preheating block (114); the first heating circuit is provided with a heating resistor (R), which is energized and heated by a four-wire connection. The second heating circuit is disposed in the first preheating block (113) and the second preheating block (114); after the first preheating block (113) and the second preheating block (114) are closed, the second heating circuit generates an electric arc for heating. The first preheating block (113) and the second preheating block (114) have a first mode of heating with the first heating circuit and a second mode of heating with the second heating circuit; When the material to be cut is plastic, the required heat is lower, so the first heating circuit and the heating temperature corresponding to plastic are selected; when the material to be cut is metal, the required heat is higher, so the second heating circuit and the heating temperature corresponding to metal are selected.

2. The tube forming apparatus according to claim 1, characterized in that, The cutting mechanism (1) further includes: A cutting assembly (12) is disposed on the preheating assembly (11); the cutting assembly (12) is provided with a driving part, and the driving part is provided with the cutting blade (122), the cutting blade (122) is located at the end of the preheating chamber and along the insertion direction of the tube to be cut, the cutting blade (122) is located upstream of the preheating chamber; Under the driving action of the drive unit, the cutting blade (122) has the first position and the second position when it is active.

3. The molding apparatus according to claim 2, characterized in that, The cutting component (12) includes: A cutting cylinder (121) is disposed on the preheating assembly (11); the cutting cylinder (121) is provided with a drive unit; The cutting blade (122) is disposed on the drive unit and located on the side close to the tube material to be cut.

4. The molding apparatus according to claim 2 or 3, characterized in that, The cutting mechanism (1) further includes: The conveying assembly (13) is adapted to convey the pipe material to be cut; along the conveying direction of the pipe material to be cut, the conveying assembly (13) is located upstream of the preheating assembly (11) and conveys the pipe material to be cut into the preheating chamber.

5. The molding apparatus according to claim 4, characterized in that, The conveying assembly (13) includes: A base support (131) is disposed on one side of the preheating assembly (11); Multiple conveyor roller sets (132) are disposed on the base support (131); the multiple conveyor roller sets (132) are arranged along the conveying direction of the tube material to be cut; Each conveyor roller assembly (132) includes two spaced-apart conveyor rollers (1321), which together form a conveying channel suitable for conveying the pipe material to be cut on their adjacent end faces.

6. The molding apparatus according to any one of claims 1 to 3, characterized in that, The pressing mechanism (2) includes: The fixed support (21) is provided with a fixed groove and a fixed block (26). The fixed block (26) is movably disposed on the fixed groove. When the fixed block (26) is engaged with the fixed groove, the fixed block (26) and the fixed groove surround to form the fixed cavity. When the fixed block (26) is removed from the fixed groove, the fixed cavity is opened. A first pressing block (22) is disposed on one side of the fixing groove; an angle is provided between the extending direction of the first pressing block (22) and the extending direction of the fixing cavity; The second pressing block (23) is movably disposed relative to the fixed support (21); the second pressing block (23) has a pressing position close to and abutting against the first pressing block (22) and a storage position away from the first pressing block (22); The first pressing block (22) and the second pressing block (23) are heated during pressing.

7. The molding apparatus according to claim 6, characterized in that, The pressing mechanism (2) further includes: The movable component (24) is provided with a worktable (245) and a movable support (246), the movable support (246) being movably mounted on the worktable (245), and the fixed support (21) being installed on the worktable (245). A final pressure cylinder (25) is mounted on the movable support (246); the drive end of the final pressure cylinder (25) is connected to the second pressing block (23); The movable bracket (246) drives the second pressing block (23) to switch between the pressing position and the storage position; when the second pressing block (23) is in the pressing position, the final pressure cylinder (25) drives the second pressing block (23) to continue to move closer to the first pressing block (22).

8. The molding apparatus according to claim 7, characterized in that, The moving component (24) also includes: A movable guide rail (241) is laid on the worktable (245); A slider (242) is slidably mounted on the movable guide rail (241); a movable bracket (246) is mounted on the slider (242), and when the movable bracket (246) slides on the movable guide rail (241), it has a first position close to the fixed support (21) and a second position away from the fixed support (21); when the movable bracket (246) is in the first position, it drives the second pressing block (23) to switch between the pressing position and the storage position; A drive cylinder (243) is mounted on the worktable (245); the power output end of the drive cylinder (243) is connected to the slider (242).

9. The molding apparatus according to claim 8, characterized in that, The moving component (24) also includes: A positioning cylinder (244) is provided on the worktable (245); the positioning cylinder (244) is provided with a positioning end, and the positioning end positions the slider (242) after contacting the slider (242).

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