A bolt hot heading machine based on high-frequency heating and a processing method

Abstract

The present invention discloses a bolt hot heading machine based on high-frequency heating and a processing method, comprising the following steps: S1, using the stepping feeding mechanism to step-feed bolt blanks in a row arrangement; S2, heating the end of the bolt blank during step-feeding through the high-frequency magnetic field generated by the high-frequency heating mechanism until it reaches the temperature for plastic deformation; S3, using the clamping and discharging mechanism to clamp the heated bolt blank and place it at the clamping station; S4, using the clamping and positioning mechanism to fix the bolt blank at the clamping station; S5, performing stamping forming on the end of the bolt blank through the impact forging mechanism; The present invention improves production efficiency, ensures the quality of bolt products, reduces energy consumption and waste gas emissions, and improves the safety of the operation process.

Description

Technical Field

[0001] The present invention relates to the technical field of bolt production and processing, and particularly relates to a bolt hot heading machine and processing method based on high-frequency heating. Background Art

[0002] Hot heading refers to a method in metal processing where the metal material is first heated to a certain plastic state and then subjected to stamping or plastic deformation to obtain the desired shape and size. This method is commonly used in manufacturing fasteners or other metal parts.

[0003] Hot heading and cold heading are two different metal processing methods. Cold heading involves stamping or plastic deformation of the metal material at room temperature, while hot heading requires prior heating of the metal material. In comparison, hot heading is more suitable for processing larger or complex-shaped workpieces, as well as situations where it is necessary to improve the material structure and enhance mechanical properties.

[0004] In the production process of bolt hot heading, heating is a crucial step. Traditional bolt heating technologies, such as flame heating or electric heating, although meeting the production requirements to a certain extent, have many deficiencies. Firstly, the heating speed of these traditional methods is relatively slow, which not only affects production efficiency but also increases the oxidation risk of bolts during heating, thus affecting product quality. Secondly, the energy conversion efficiency of traditional heating methods is low, resulting in a large amount of energy waste and environmental pollution. Moreover, these methods often make it difficult to precisely control the heating temperature, easily causing the temperature to be too high or too low, thereby affecting the quality and performance of bolts. Summary of the Invention

[0005] The purpose of the present invention is to address the problems existing in the prior art by providing a bolt hot heading machine and processing method based on high-frequency heating, which improves production efficiency, ensures the quality of bolt products, reduces energy consumption and waste gas emissions, and enhances the safety of the operation process.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A bolt hot forging machine based on high-frequency heating comprises: a step-by-step feeding mechanism for step-by-step feeding of bolt blanks in a row; a high-frequency heating mechanism comprising a first coil and a second coil, wherein the first coil and the second coil are respectively suspended above and below the ends of the bolt blanks during the step-by-step feeding process, and a high-frequency magnetic field is used to heat the bolt blanks to a temperature at which they can be plastically deformed; a clamping and discharging mechanism for clamping and placing the heated bolt blanks; a clamping and positioning mechanism for fixing the bolt blanks; an impact forging mechanism for stamping the ends of the bolt blanks; a driving device and a transmission mechanism, wherein the driving device provides power, and the transmission mechanism transmits power to the clamping and discharging mechanism, the clamping and positioning mechanism, and the impact forging mechanism, respectively.

[0008] The step feeding mechanism includes: a support plate, which is fixed to the main frame and is used to horizontally support the bolt blanks to be arranged in a row; a stepping plate, which is movably arranged on one side of the support plate and performs up and down reciprocating motion and front and back reciprocating motion relative to the support plate. The stepping plate and the support plate alternately support the bolt blanks to realize the step feeding action; a material guide assembly, which is fixed to the end of the support plate and guides the bolt blanks to be unloaded; a pushing plate, which is movably arranged below the material guide assembly, receives and pushes the bolt blanks to the clamping and unloading mechanism.

[0009] The high-frequency heating mechanism includes: a chassis, which is arranged on the step-feeding mechanism and is equipped with a high-frequency power supply, a transformer and a controller; a support frame, one end of which is connected to the chassis and the other end of which is connected to a first coil and a second coil, wherein the first coil and the second coil are respectively suspended above and below the end of the bolt blank which is in the step-feeding process and is in the target area.

[0010] The clamping and unloading mechanism includes: a fixed plate, which is vertically fixed to the main frame of the hot heading machine and has a baffle plate on the upper end; a slider, which is slidably arranged on the fixed plate, a compression spring is provided between the baffle plate and the slider, the upper end of the slider is connected to a guide rod passing through the compression spring and the baffle plate, and the upper end of the guide rod is provided with a limiting cap; a clamping jaw assembly, including a clamping rod connected to the slider and an elastic clip affixed to the side wall of the clamping rod, a limiting groove is provided at the lower end of the side wall of the clamping rod affixed to the elastic clip, the lower end of the elastic clip can be elastically tilted, and the lower end of the clamping rod and / or the elastic clip is provided with a groove for feeding; a clamping transmission assembly, connected to the transmission mechanism, for transmitting power to the slider to drive the slider to lift and lower.

[0011] The clamping and positioning mechanism includes: a fixed module, which is fixedly connected to the main frame and has a first clamping groove extending horizontally on its clamping surface; a movable module, which is movably connected to the main frame and has a second clamping groove matching the first clamping groove on its clamping surface; and an opening and closing mold assembly, which drives the movable module to clamp the fixed module so that the first clamping groove and the second clamping groove clamp the bolt blank.

[0012] The impact forging mechanism includes: a two-die seat, which is provided with a first die and a second die arranged up and down, and is used to stamp the bolt blank twice; a lifting transmission assembly, which drives the two-die seat to move up and down, so that the positions of the first die and the second die are switched, so that the first die and the second die are aligned with the bolt blank in turn; a stamping transmission assembly, which drives the two-die seat to move along the axis of the bolt blank, so that the first die and the second die respectively stamp the heating end of the bolt blank.

[0013] A bolt processing method comprises the following steps:

[0014] S1. Use a stepping feeding mechanism to step and convey the bolt blanks in a row;

[0015] S2, heating the end of the bolt blank in the stepping conveying by means of a high-frequency magnetic field generated by a high-frequency heating mechanism until it reaches a temperature at which it can be plastically deformed;

[0016] S3, using a clamping and unloading mechanism to clamp the heated bolt blank and place it at a clamping station;

[0017] S4, using a clamping positioning mechanism to fix the bolt blank at the clamping station;

[0018] S5. The end of the bolt blank is punched and formed by an impact forging mechanism.

[0019] Step S1 specifically includes the following steps:

[0020] S101, using a support plate to laterally support the bolt blank;

[0021] S102, the transmission mechanism drives the stepping plate to perform up-and-down reciprocating motion and back-and-forth reciprocating motion relative to the support plate, so that the stepping plate and the support plate alternately support the plurality of bolts to realize a stepping material transmission action;

[0022] S103, the material guide assembly guides the bolt blank to be unloaded;

[0023] S104, the push plate receives and pushes the bolt blank to the clamping and unloading mechanism.

[0024] Step S2 specifically includes the following steps:

[0025] S201, high frequency power supply converts industrial power supply electric energy into high frequency AC electric energy;

[0026] S202, the transformer transforms the high-frequency current generated by the high-frequency power supply into high-voltage, low-current electric energy, and transmits the electric energy to the first coil and the second coil;

[0027] S203, a high-frequency magnetic field is generated between the first coil and the second coil, so that the end of the bolt blank in the stepping conveying process and located between the high-frequency magnetic fields is heated to a temperature at which it can be plastically deformed.

[0028] Step S3 specifically includes the following steps:

[0029] S301, moving the push plate carrying the bolt blank to below the clamping jaw assembly;

[0030] S302, the clamping transmission assembly drives the slide block to descend, and the slide block drives the clamping jaw assembly to descend, so that the clamping rod contacts the bolt blank;

[0031] S303, the slide block is further lowered until the clamp rod is pressed against by the push plate, and the bolt blank enters between the clamp rod and the elastic clip from the groove, and the bolt blank squeezes the elastic clip to elastically deform outward, so that the bolt blank can be squeezed into the limiting groove to achieve clamping;

[0032] S304, the push plate is retracted to the initial position, the clamping jaw assembly carrying the bolt blank continues to descend to the clamping station, and the bolt blank is clamped and fixed using the clamping positioning mechanism;

[0033] S305, the clamping transmission assembly drives the slide block to rise, so that the bolt blank is released from the limiting groove, the bolt blank squeezes the elastic clip to separate from the clamping claw assembly, and the elastic clip returns to its original state under the action of its own elasticity, completing the material release action.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. Due to the principle of high-frequency induction heating, the end of the bolt blank can reach the required heating temperature in a very short time. This fast heating speed not only improves production efficiency, but also reduces the oxidation of the bolt during the heating process, thereby ensuring the quality of the bolt;

[0036] 2. Compared with traditional heating methods, such as flame heating or electric heating, high-frequency induction heating has higher energy conversion efficiency, less energy is wasted, thereby reducing energy consumption and exhaust emissions, and is more environmentally friendly;

[0037] 3. High-frequency induction heating can monitor and control the heating temperature in real time. Precise temperature control not only ensures the accuracy and consistency of bolt heating, but also avoids quality problems caused by excessively high or low temperatures;

[0038] 4. By adopting the step - by - step transportation method, it can ensure that the ends of the bolt blanks are arranged in a neat suspended state in a row, which is conducive to the high - frequency induction coil to uniformly heat them. The neat arrangement ensures that the ends of each bolt blank in the target heating area can receive heating under the same conditions and with the same efficiency, thereby improving the heating consistency and product quality.

[0039] 5. By adopting the step - by - step transportation method, the ends of the bolt blanks are neatly arranged, enabling the induction coil to more effectively cover the target heating area, reducing energy loss, and further enhancing the heating speed and energy utilization efficiency.

[0040] 6. By adopting the step - by - step transportation method, contact between bolt blanks is avoided, reducing the risk of failures caused by blank sticking or jamming, and reducing potential safety hazards such as sparks or short - circuits that may occur during the heating process, thereby improving the safety of the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic connection structure diagram of the step - by - step feeding mechanism and the high - frequency heating mechanism in an embodiment of the present application;

[0042] Figure 2 It is a schematic structure diagram of the step - by - step feeding mechanism in an embodiment of the present application;

[0043] Figure 3 It is a schematic structure diagram of the high - frequency heating mechanism in an embodiment of the present application;

[0044] Figure 4 It is a schematic structure diagram of the clamping and discharging mechanism in an embodiment of the present application;

[0045] Figure 5 It is a schematic structure diagram of the clamping and positioning mechanism in an embodiment of the present application;

[0046] Figure 6 It is a schematic structure diagram of the impact forging mechanism in an embodiment of the present application;

[0047] Figure 7 It is a schematic connection structure diagram of the step - by - step feeding mechanism, the high - frequency heating mechanism, the clamping and discharging mechanism, and the clamping and positioning mechanism in an embodiment of the present application;

[0048] Figure 8 It is a schematic overall structure diagram of the hot - heading machine in an embodiment of the present application.

[0049] In the figure: 1, support plate; 2, stepping plate; 3, material guiding assembly; 4, material pushing plate; 5, chassis; 6, support frame; 7, first coil; 8, second coil; 9, fixing plate; 10, baffle plate; 11, slider; 12, guide rod; 13, jaw assembly; 14, clamping transmission assembly; 15, fixed die block; 16, moving die block; 17, second punching die base; 18, first punching die; 19, second punching die; 20, lifting transmission assembly; 21, stamping transmission assembly; 22, first material discharging plate; 23, second material discharging plate; 24, movable push rod. Detailed implementation manner

[0050] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work conditions belong to the scope of protection of the present invention.

[0051] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0052] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0053] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0054] In the first aspect of the present application, a bolt processing method based on high-frequency heating is provided. The hot heading machine includes a main body frame, a stepping feeding mechanism, a high-frequency heating mechanism, a clamping and discharging mechanism, a clamping and positioning mechanism, an impact forging mechanism, a driving device, and a transmission mechanism, asFigure 8 as shown

[0055] The bolt processing method includes the following steps:

[0056] S1. Use a stepping feeding mechanism to step-feed the bolt blanks in a row. The stepping feeding mechanism is used to step-feed the bolt blanks in a row, ensuring that the blanks can continuously and stably enter the heating and forming processes.

[0057] S2. Heat the end of the bolt blank being step-fed through the high-frequency magnetic field generated by a high-frequency heating mechanism until it reaches the temperature for plastic deformation. The high-frequency heating mechanism uses the high-frequency magnetic field to heat the end of the bolt blank being step-fed. When the bolt blank passes through this mechanism, it will be quickly heated to the temperature for plastic deformation, which is necessary for the subsequent stamping and forming steps. It allows the bolt blank to change shape more easily when subjected to impact without breaking or cracking.

[0058] S3. Use a clamping and discharging mechanism to clamp the heated bolt blank and place it at the clamping station. The clamping and discharging mechanism accurately clamps the heated blank after heating and places it at the clamping station for the next stamping and forming operation.

[0059] S4. Use a clamping and positioning mechanism to fix the bolt blank at the clamping station. The clamping and positioning mechanism fixes the bolt blank at the clamping station, ensuring its accurate position and preventing movement or deflection during stamping.

[0060] S5. Through an impact forging mechanism, stamp and form the end of the bolt blank. The impact forging mechanism finally stamps and forms the end of the fixed bolt blank to complete the bolt processing process.

[0061] In this embodiment, as Figure 1 shown, the high-frequency induction heating method is adopted to heat the end of the bolt during the step-by-step transportation. Its principle is to use a high-frequency alternating current to generate an alternating magnetic field through an induction coil. When the end of the bolt blank enters this alternating magnetic field, eddy currents will be generated inside it. Since these eddy currents generate Joule heat due to the resistance of the metal material, the end of the bolt blank can be quickly heated.

[0062] Due to the principle of high-frequency induction heating, the end of the bolt blank can reach the required heating temperature in an extremely short time. This rapid heating speed not only improves production efficiency but also reduces the oxidation of the bolt during the heating process, thus ensuring the quality of the bolt.

[0063] Compared with traditional heating methods such as flame heating or electric heating, high-frequency induction heating has higher energy conversion efficiency, less energy is wasted, thus reducing energy consumption and waste gas emissions, and is more environmentally friendly.

[0064] High-frequency induction heating can monitor and control the heating temperature in real time. Precise temperature control not only ensures the accuracy and consistency of bolt heating, but also avoids quality problems caused by too high or too low temperature.

[0065] By adopting the step-by-step transportation method, it can ensure that the ends of the bolt blanks are arranged in a neat suspended state in a row, which is beneficial for the high-frequency induction coil to uniformly heat them. The neat arrangement ensures that the ends of each bolt blank in the target heating area can be heated under the same conditions and with the same efficiency, thereby improving the heating consistency and product quality.

[0066] By adopting the step-by-step transportation method, the ends of the bolt blanks are neatly arranged, enabling the induction coil to more effectively cover the target heating area, reducing energy loss, and further improving the heating speed and energy utilization efficiency.

[0067] By adopting the step-by-step transportation method, contact between bolt blanks is avoided, reducing the risk of failures caused by blank adhesion or jamming, and reducing potential safety hazards such as sparks or short circuits that may occur during the heating process, thereby improving the safety of the operation process.

[0068] In some embodiments, as Figure 2 shown, the step-by-step feeding mechanism includes: a support plate 1, fixed to the main body frame; a step plate 2, movably arranged on one side of the support plate 1; a material guiding component 3, fixed to the end of the support plate 1; and a pushing plate 4, movably arranged below the material guiding component 3.

[0069] Step S1 specifically includes the following steps:

[0070] S101. Horizontally support the bolt blank by using the support plate.

[0071] S102. The transmission mechanism drives the step plate to make reciprocating up-and-down and back-and-forth movements relative to the support plate, so that the step plate and the support plate alternately support multiple bolts, realizing the step-by-step feeding action.

[0072] S103. The material guiding component guides the bolt blank to discharge.

[0073] S104. The pushing plate receives and pushes the bolt blank to the clamping and discharging mechanism.

[0074] In this embodiment, through the alternating support and pushing of the step plate 2 and the support plate 1, the bolts can move forward continuously and stably, thereby improving the overall production efficiency of the bolt production line.

[0075] Through the alternating support and propulsion of the stepping plate 2 and the support plate 1, the bolts are neatly arranged in a row, and their head ends can be suspended and extend out of the support plate. This arrangement makes it easy for the end of the bolt blank to be exposed during the material transfer process, thus facilitating the cooperation with the coil of the high-frequency heating mechanism to heat the end of the bolt blank.

[0076] Through the design of arranging the bolts orderly and exposing their heads, the heating operation can be carried out simultaneously during the material transfer process, without additional transfer and positioning steps. This not only saves time but also reduces the space occupied by the equipment and improves the overall efficiency of the production line.

[0077] In some embodiments, as Figure 3 shown, the high-frequency heating mechanism includes: a chassis 5, provided in the stepping feeding mechanism, which is internally provided with a high-frequency power supply, a transformer, and a controller; a support frame 6, one end of which is connected to the chassis 5, and the other end is connected to a first coil 7 and a second coil 8. The first coil 7 and the second coil 8 are respectively suspended above and below the end of the bolt blank that is in the stepping conveying process and at the target area position.

[0078] Step S2 specifically includes the following steps:

[0079] S201. The high-frequency power supply converts the electrical energy of the industrial power supply into high-frequency alternating current energy; the design of the high-frequency power supply enables it to output high-frequency alternating current, and the high-frequency alternating current energy can more effectively generate induced current in the metal.

[0080] S202. The transformer transforms the high-frequency current generated by the high-frequency power supply into electrical energy with high voltage and low current, and delivers it to the first coil and the second coil; the high voltage can more effectively generate induced current in the bolt blank, while the low current helps to reduce energy loss and improve energy efficiency.

[0081] S203. A high-frequency electric field is generated between the first coil and the second coil, heating the end of the bolt blank that is in the stepping conveying process and at the target area position to the temperature of plastic deformation; when the bolt blank is stepped into the high-frequency magnetic field, due to the principle of electromagnetic induction, induced current will be generated inside the bolt blank. These eddy currents flow inside the bolt blank and are converted into heat energy due to the resistance of the metal. As the heat accumulates, the end of the bolt blank is heated to the temperature of plastic deformation.

[0082] In this embodiment, since the first coil 7 and the second coil 8 are respectively located above and below the bolt blank, the high-frequency magnetic field generated between them can accurately cover the end of the bolt blank. This layout ensures that the magnetic field acting on the bolt blank during the heating process is local, thus achieving the end heating effect without heating the entire bolt blank, thereby saving energy and improving the heating efficiency.

[0083] Rapid local heating of the bolt blank by a high-frequency heating mechanism can greatly shorten the heating time and improve production efficiency. At the same time, since the heating process is more uniform and precise, it also helps to improve the processing quality of the bolt and the consistency of the product.

[0084] In some embodiments, Figure 4 As shown, the clamping and unloading mechanism includes: a fixed plate 9, which is vertically fixed to the main frame of the hot header machine and has a baffle 10 at the upper end; a slider 11, which is slidably arranged on the fixed plate 9, a compression spring is arranged between the baffle 10 and the slider 11, the upper end of the slider 11 is connected with a guide rod 12 passing through the compression spring and the baffle 10, and the upper end of the guide rod 12 is provided with a limiting cap; a clamping jaw assembly 13, including a clamping rod connected to the slider and an elastic clip fitted with the side wall of the clamping rod, a limiting groove is provided at the lower end of the side wall of the clamping rod fitted with the elastic clip, the lower end of the elastic clip can be elastically tilted, and the lower end of the clamping rod and / or the elastic clip is provided with a groove for feeding; a clamping transmission assembly 14, connected to the transmission mechanism, is used to transmit power to the slider to drive the slider to lift and lower.

[0085] Step S3 specifically includes the following steps:

[0086] S301, moving the push plate carrying the bolt blank to the bottom of the clamping jaw assembly;

[0087] S302, the clamping transmission assembly drives the slide block to descend, and the slide block drives the clamping claw assembly to descend, so that the clamping rod contacts the bolt blank;

[0088] S303, the slide block is further lowered until the clamp rod is pressed against the push plate, and the bolt blank enters between the clamp rod and the elastic clip from the groove, and the bolt blank squeezes the elastic clip to elastically deform outward, so that the bolt blank can be squeezed into the limiting groove to achieve clamping;

[0089] S304, the push plate is retracted to the initial position, the clamping jaw assembly carrying the bolt blank continues to descend to the clamping station, and the bolt blank is clamped and fixed using the clamping positioning mechanism;

[0090] S305, the clamping transmission assembly drives the slide block to rise, so that the bolt blank is released from the limiting groove, the bolt blank squeezes the elastic clip to separate from the clamping claw assembly, and the elastic clip returns to its original state under the action of its own elasticity, completing the material release action.

[0091] In this embodiment, the automatic clamping and automatic placement of the bolt blank is achieved by only controlling the lifting and lowering of the slide block 11 and the clamping jaw assembly 13. The control logic is simple, and has high reliability and stability, which not only simplifies the operation process, but also improves the production efficiency and automation level.

[0092] The clamping jaw assembly 13 includes a clamping rod and an elastic clamping piece, and a limit groove is provided on the clamping rod. This design does not require an additional driving device to drive the clamping jaw to clamp and release, making the structure simpler, the operation more convenient, reducing energy consumption and maintenance costs, and having high practicality and economy.

[0093] In some embodiments, Figure 5 As shown, the clamping and positioning mechanism includes: a fixed module 15, which is fixedly connected to the main frame, and its clamping surface is provided with a first clamping groove extending horizontally; a movable module 16, which is movably connected to the main frame, and its clamping surface is provided with a second clamping groove matching the first clamping groove; an opening and closing mold assembly drives the movable module 16 to clamp with the fixed module 15, so that the first clamping groove and the second clamping groove clamp the bolt blank;

[0094] Step S4 specifically includes the following steps:

[0095] S401. After the clamping jaw assembly carries the bolt blank down to the first clamping groove, the opening and closing mold assembly drives the moving module to stagger the clamping jaw assembly and clamp with the fixed module, so that the first clamping groove and the second clamping groove clamp the rod of the bolt blank, so that the heating end of the bolt blank is suspended.

[0096] Specifically, the structure and working principle of the opening and closing mold assembly are prior art, such as the description of the patent with publication number CN116475350A. In this embodiment, the opening and closing mold assembly is used to drive the dynamic module 16 and the fixed module 15 to clamp together, so that the first clamping groove and the second clamping groove clamp the rod body of the bolt blank, and the end of the bolt blank is suspended and exposed, which is convenient for stamping the end of the bolt blank.

[0097] In some embodiments, Figure 6 As shown, the impact forging mechanism includes: a two-die seat 17, which is provided with a first die 18 and a second die 19 arranged up and down, and is used for stamping and forming the bolt blank twice; a lifting transmission assembly 20, which drives the two-die seat 17 to move up and down, so that the positions of the first die 18 and the second die 19 are switched, so that the first die 18 and the second die 19 are aligned with the bolt blank successively; a stamping transmission assembly 21, which drives the two-die seat 17 to move along the axis of the bolt blank, so that the first die 18 and the second die 19 respectively stamp the heated end of the bolt blank;

[0098] Step S5 specifically includes the following steps:

[0099] S501, the impact transmission assembly drives the second punch die seat to move along the axis of the bolt blank, so that the first punch die first punches the heated end of the bolt blank into shape;

[0100] S502, after the impact transmission assembly drives the second punch seat to retreat, the lifting transmission assembly drives the second punch seat to move upward, so that the second punch is aligned with the bolt blank;

[0101] S503. The impact drive assembly drives the second die holder to move along the axis of the bolt blank, so that the second die performs a secondary stamping on the heated end of the bolt blank to form a shape.

[0102] Specifically, the structures and working principles of the lifting drive assembly 20 and the stamping drive assembly 21 are prior arts, as described in the patent with the publication number CN116408418A. In this embodiment, the lifting drive assembly 20 drives the second die holder 17 to move up and down, and the stamping drive assembly 21 drives the first die 18 and the second die 19 to perform stamping on the heated end of the bolt blank successively.

[0103] Through two - stage stamping, the first stamping shapes the basic shape of the bolt blank, and the second stamping further refines the structure and enhances its physical properties, which helps to eliminate the internal stress that may occur after the first stamping, thereby improving the stability and durability of the bolt. By heating the end of the bolt blank, the plasticity of the bolt blank can be improved, making it easier to deform during the stamping process, so as to process bolt blanks with larger sizes, and the required stamping force will be reduced accordingly, which helps to extend the service life of the die and reduce equipment wear.

[0104] In some embodiments, as Figure 5 shown, the hot forging machine includes a blank discharging mechanism. The blank discharging mechanism includes: a first blank discharging plate 22, arranged on one side of the moving die block 16, fixed to the main body frame, and corresponding to the suspended end of the bolt blank in step S401; a second blank discharging plate 23, arranged on one side of the fixed die block 15, connected to the movable push rod 24, and corresponding to the suspended end of the bolt blank in step S401; the movable push rod 24, connected to the transmission mechanism, for driving the second blank discharging plate 23 to displace and discharge the blank.

[0105] The bolt processing method includes the following steps:

[0106] S6. After stamping, the die opening and closing assembly drives the moving die block to retract. If the bolt blank adheres to the moving die block, during the retraction of the moving die block, the first blank discharging plate collides with the stamping end of the bolt blank, so that the bolt blank is separated from the moving die block; if the bolt blank adheres to the fixed die block, the movable push rod drives the second blank discharging plate to horizontally displace and collide with the stamping end of the bolt blank, so that the bolt blank is separated from the fixed die block.

[0107] In this embodiment, the design of the automated blank discharging process reduces the downtime caused by adhesion, enabling the production line to run more smoothly. Through the precise design of the blank discharging mechanism, the bolt blank can be separated from the template without damaging it, thus ensuring the integrity and quality of the product.

[0108] In the second aspect of this application, as Figures 1 to 8As shown, a bolt hot forging machine based on high-frequency heating is provided, comprising: a step-by-step feeding mechanism, used for step-by-step feeding of bolt blanks in a row; a high-frequency heating mechanism, comprising a first coil and a second coil, the first coil and the second coil are respectively suspended above and below the ends of the bolt blanks during the step-by-step feeding process, and a high-frequency magnetic field is used to heat the bolt blanks to a temperature at which they can be plastically deformed; a clamping and discharging mechanism, used for clamping and placing the heated bolt blanks; a clamping and positioning mechanism, used for fixing the bolt blanks; an impact forging mechanism, used for stamping the ends of the bolt blanks; a driving device and a transmission mechanism, wherein the driving device provides power, and the transmission mechanism transmits the power to the clamping and discharging mechanism, the clamping and positioning mechanism, and the impact forging mechanism, respectively.

[0109] In some embodiments, Figure 2 As shown, the stepping feeding mechanism includes: a support plate 1, which is fixed to the main frame and is used to horizontally support the bolt blanks in a row; a stepping plate 2, which is movably arranged on one side of the support plate 1 and makes up and down reciprocating motions and front and back reciprocating motions relative to the support plate. The stepping plate and the support plate alternately support the bolt blanks to realize the stepping feeding action; a material guide assembly 3, which is fixed at the end of the support plate 1 and guides the bolt blanks to be discharged; a pushing plate 4, which is movably arranged below the material guide assembly 3, receives and pushes the bolt blanks to the clamping and unloading mechanism.

[0110] In some embodiments, Figure 3 As shown, the high-frequency heating mechanism includes: a chassis 5, which is arranged in the step-feeding mechanism and is equipped with a high-frequency power supply, a transformer and a controller; a support frame 6, one end of which is connected to the chassis 5, and the other end is connected to the first coil 7 and the second coil 8, and the first coil 7 and the second coil 8 are respectively suspended above and below the end of the bolt blank which is in the step-feeding process and is in the target area.

[0111] In some embodiments, Figure 4 As shown, the clamping and unloading mechanism includes: a fixed plate 9, which is vertically fixed to the main frame of the hot header machine and has a baffle 10 at the upper end; a slider 11, which is slidably arranged on the fixed plate 9, a compression spring is arranged between the baffle 10 and the slider 11, the upper end of the slider 11 is connected with a guide rod 12 passing through the compression spring and the baffle 10, and the upper end of the guide rod 12 is provided with a limiting cap; a clamping jaw assembly 13, including a clamping rod connected to the slider and an elastic clip fitted with the side wall of the clamping rod, a limiting groove is provided at the lower end of the side wall of the clamping rod fitted with the elastic clip, the lower end of the elastic clip can be elastically tilted, and the lower end of the clamping rod and / or the elastic clip is provided with a groove for feeding; a clamping transmission assembly 14, connected to the transmission mechanism, is used to transmit power to the slider to drive the slider to lift and lower.

[0112] In some embodiments, Figure 5As shown in the figure, the clamping and positioning mechanism includes: a fixed module 15, fixedly connected to the main body frame, and its clamping surface is provided with a first clamping groove extending horizontally; a moving module 16, movably connected to the main body frame, and its clamping surface is provided with a second clamping groove matching the first clamping groove; a mold opening and closing assembly, driving the moving module 16 to clamp with the fixed module 15, so that the first clamping groove and the second clamping groove clamp the bolt blank.

[0113] In some embodiments, as Figure 6 shown in the figure, the impact forging mechanism includes: a two - punch die seat 17, provided with a first punch die 18 and a second punch die 19 arranged up and down, for stamping the bolt blank into shape twice; a lifting transmission assembly 20, driving the two - punch die seat 17 to move up and down, so as to switch the positions of the first punch die 18 and the second punch die 19, so that the first punch die 18 and the second punch die 19 are successively aligned with the bolt blank; a stamping transmission assembly 21, driving the two - punch die seat 17 to move along the axis of the bolt blank, so that the first punch die 18 and the second punch die 19 respectively stamp the heated end of the bolt blank.

[0114] In some embodiments, as Figure 5 shown in the figure, the hot heading machine includes a blank discharging mechanism, and the blank discharging mechanism includes: a first blank discharging plate 22, arranged on one side of the moving module 16, fixed to the main body frame, and corresponding to the suspended end of the bolt blank in step S401; a second blank discharging plate 23, arranged on one side of the fixed module 15, connected to the movable push rod 24, and corresponding to the suspended end of the bolt blank in step S401; a movable push rod 24, connected to the transmission mechanism, for driving the second blank discharging plate 23 to displace and discharge the blank.

[0115] In summary, the present application proposes a bolt heating technology based on high - frequency induction heating and step - by - step transportation. The high - frequency induction heating technology has the characteristics of fast, efficient, and environmentally friendly. Its principle is to use the eddy current effect generated by high - frequency current in a conductor to heat the material, and it has the advantages of fast heating speed, high energy conversion efficiency, and precise temperature control.

[0116] On this basis, the present application further introduces a step - by - step transportation method to ensure that the ends of the bolt blanks can be neatly arranged and uniformly heated by the high - frequency induction coil in a suspended state. This method not only improves the heating consistency and product quality, but also effectively reduces energy consumption, further improves the heating speed and energy utilization efficiency; at the same time, by avoiding the contact between the bolt blanks, it reduces the risk of faults such as adhesion and jamming, as well as potential safety hazards such as sparks or short - circuits that may occur during the heating process, thus significantly improving the safety of the operation process.

[0117] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bolt hot piercing machine based on high frequency heating, characterized in that: include: A stepping feeding mechanism is used to step and feed the bolt blanks in a row; The high-frequency heating mechanism comprises a first coil and a second coil, wherein the first coil and the second coil are suspended above and below the end of the bolt blank during the stepping conveying process, respectively, and uses a high-frequency magnetic field to heat the bolt blank to a temperature at which it can be plastically deformed; A clamping and placing mechanism is used to clamp and place the heated bolt blanks; A clamping and positioning mechanism for fixing the bolt blank; Impact forging mechanism, used for stamping and forming the ends of bolt blanks; A driving device and a transmission mechanism, wherein the driving device provides power, and the transmission mechanism transmits the power to the clamping and releasing mechanism, the clamping and positioning mechanism, and the impact forging mechanism respectively; The step feeding mechanism comprises: A support plate (1) is fixed to the main frame and is used to laterally support the bolt blanks to be arranged in a row; A stepping plate (2) is movably arranged on one side of the support plate (1) and performs up-and-down reciprocating motion and forward-and-backward reciprocating motion relative to the support plate. The stepping plate and the support plate alternately support the bolt blank to realize a stepping material transfer action; A material guide assembly (3) is fixedly arranged at the end of the support plate (1) to guide the cutting of the bolt blank; A push plate (4) is movably arranged below the material guide assembly (3) to receive and push the bolt blank to the clamping and unloading mechanism; The high frequency heating mechanism comprises: A chassis (5) is arranged on the stepping feeding mechanism and contains a high-frequency power supply, a transformer and a controller; A support frame (6), one end of which is connected to the chassis (5), and the other end of which is connected to a first coil (7) and a second coil (8), wherein the first coil (7) and the second coil (8) are respectively suspended above and below an end of the bolt blank which is in a stepping conveying process and is located in a target area; The clamping and positioning mechanism comprises: A fixed module (15) is fixedly connected to the main frame, and a clamping surface thereof is provided with a first clamping groove extending horizontally; A movable module (16) is movably connected to the main frame, and its clamping surface is provided with a second clamping groove that matches the first clamping groove; An opening and closing mold assembly drives the movable mold block (16) and the fixed mold block (15) to clamp together, so that the first clamping groove and the second clamping groove clamp the bolt blank; The invention comprises a material stripping mechanism, which comprises: a first material stripping plate (22), which is arranged on one side of the movable module (16), fixed to the main frame and corresponding to the suspended end of the bolt blank; a second material stripping plate (23), which is arranged on one side of the fixed module (15), connected to the movable push rod (24) and corresponding to the suspended end of the bolt blank; and the movable push rod (24) is connected to the transmission mechanism and is used to drive the second material stripping plate (23) to move and strip the material.

2. A bolt hot forging machine based on high frequency heating according to claim 1, characterized in that: The clamping and unloading mechanism comprises: A fixing plate (9) is vertically fixed to the main frame of the hot heading machine and is provided with a baffle (10) at the upper end; A slider (11) is slidably disposed on the fixed plate (9) up and down, a compression spring is disposed between the baffle plate (10) and the slider (11), the upper end of the slider (11) is connected to a guide rod (12) passing through the compression spring and the baffle plate (10), and a limit cap is disposed at the upper end of the guide rod (12); A clamping jaw assembly (13) comprises a clamping rod connected to the slider and an elastic clamping piece abutting against a side wall of the clamping rod, a limiting groove is provided at the lower end of the side wall of the clamping rod abutting against the elastic clamping piece, the lower end of the elastic clamping piece can be elastically tilted, and a groove for feeding is provided at the lower end of the clamping rod and / or the elastic clamping piece; A clamping transmission assembly (14) is connected to the transmission mechanism and is used to transmit power to the slider to drive the slider to move up and down.

3. The bolt hot forging machine based on high frequency heating according to claim 1 is characterized in that: The impact forging mechanism comprises: A second punching die seat (17) is provided with a first punching die (18) and a second punching die (19) arranged up and down, and is used for punching and forming the bolt blank twice; A lifting transmission assembly (20) drives the second die seat (17) to move up and down, so that the positions of the first die (18) and the second die (19) are switched, so that the first die (18) and the second die (19) are aligned with the bolt blank in sequence; The punching transmission assembly (21) drives the second punching die seat (17) to move along the axis of the bolt blank, so that the first punching die (18) and the second punching die (19) respectively punch the heated end of the bolt blank.

4. The bolt processing method applied to the bolt hot forging machine according to claim 2 is characterized in that: The following steps are involved: S1. Use a stepping feeding mechanism to step and convey the bolt blanks in a row; S2, heating the end of the bolt blank in the stepping conveying by means of a high-frequency magnetic field generated by a high-frequency heating mechanism until it reaches a temperature at which it can be plastically deformed; S3, using a clamping and unloading mechanism to clamp the heated bolt blank and place it at a clamping station; S4, using a clamping positioning mechanism to fix the bolt blank at the clamping station; S5. stamping the end of the bolt blank by an impact forging mechanism; S6. After stamping is completed, the opening and closing die assembly drives the movable module to retreat; if the bolt blank is adhered to the movable module, the first stripper plate collides with the stamping end of the bolt blank during the retreat of the movable module, so that the bolt blank is separated from the movable module; if the bolt blank is adhered to the fixed module, the movable push rod drives the second stripper plate to move horizontally and collide with the stamping end of the bolt blank, so that the bolt blank is separated from the fixed module.

5. The bolt processing method according to claim 4, characterized in that: Step S1 specifically includes the following steps: S101, using a support plate to laterally support the bolt blank; S102, the transmission mechanism drives the stepping plate to perform up-and-down reciprocating motion and back-and-forth reciprocating motion relative to the support plate, so that the stepping plate and the support plate alternately support the plurality of bolts to realize a stepping material transmission action; S103, the material guide assembly guides the bolt blank to be unloaded; S104, the push plate receives and pushes the bolt blank to the clamping and unloading mechanism.

6. The bolt processing method according to claim 4, characterized in that: Step S2 specifically includes the following steps: S201, high frequency power supply converts industrial power supply electric energy into high frequency AC electric energy; S202, the transformer transforms the high-frequency current generated by the high-frequency power supply into high-voltage, low-current electric energy, and transmits the electric energy to the first coil and the second coil; S203, a high-frequency magnetic field is generated between the first coil and the second coil, so that the end of the bolt blank in the stepping conveying process and located between the high-frequency magnetic fields is heated to a temperature at which it can be plastically deformed.

7. The bolt processing method according to claim 4, characterized in that: Step S3 specifically includes the following steps: S301, moving the push plate carrying the bolt blank to below the clamping jaw assembly; S302, the clamping transmission assembly drives the slide block to descend, and the slide block drives the clamping jaw assembly to descend, so that the clamping rod contacts the bolt blank; S303, the slide block is further lowered until the clamp rod is pressed against by the push plate, and the bolt blank enters between the clamp rod and the elastic clip from the groove, and the bolt blank squeezes the elastic clip to elastically deform outward, so that the bolt blank can be squeezed into the limiting groove to achieve clamping; S304, the push plate is retracted to the initial position, the clamping jaw assembly carrying the bolt blank continues to descend to the clamping station, and the bolt blank is clamped and fixed using the clamping positioning mechanism; S305, the clamping transmission assembly drives the slide block to rise, so that the bolt blank is released from the limiting groove, the bolt blank squeezes the elastic clip to separate from the clamping claw assembly, and the elastic clip returns to its original state under the action of its own elasticity, completing the material release action.

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