Knife handle shaping device and knife handle shaping method

Abstract

The invention belongs to the field of cutter machining equipment, and relates to a cutter handle shaping device and a cutter handle shaping method. The problems that in the prior art, due to split type operation and manual transfer, temperature drop is too large, and the shaping quality is not stable are solved. The device comprises a cutter conveying assembly, a heating assembly and a pressing assembly. A first position for heating and a second position for pressing are sequentially arranged on a guide rail of the cutter conveying assembly. The cutter conveying assembly is used for driving the cutter to be transferred from the first position to the second position for press-fit shaping after heating is completed. The heating process and the pressing process are integrated on the same automatic platform, the process transfer time is shortened, temperature drop of the cutter handle in the transfer process is restrained, and therefore the quality stability and consistency of final products are improved.

Description

Technical Field

[0001] This application relates to the field of hot pressing molding technology for cutting tools and tool holders, and in particular to a tool holder molding device and a tool holder molding method. Background Technology

[0002] In the knife manufacturing process, the assembly and subsequent processing of the handle and blade are crucial steps to ensure the final performance and quality of the product. Especially in some applications, the connection area of ​​the assembled handle requires thermoplastic forming to optimize its mechanical structure, improve grip, or meet specific assembly requirements. This process demands precise control over heating temperature and pressing timing, directly impacting the yield rate and performance stability of the finished product.

[0003] Currently, a common method for shaping such tool holders is a step-by-step manual operation. Specifically, the operator first manually places the assembled tool holder onto a separate high-frequency heating device for localized heating; once the tool holder reaches the predetermined temperature, it is quickly removed manually and transferred to another separate disc press or stamping device for pressing. This production method, which relies on manual transfer between different devices, is not only cumbersome and inefficient, but also makes quality control highly dependent on the operator's skill and reaction speed.

[0004] The aforementioned technologies suffer from drawbacks. Because the heating and pressing positions are separated and rely on manual transfer, the tool holder experiences excessive temperature drop during the transfer process, leading to unstable pressing and shaping effects. During the transfer of the tool holder from the heating equipment to the pressing equipment, the hot workpiece cools rapidly upon contact with air. If the transfer time is too long or even slightly delayed, the tool holder temperature may drop below the ideal shaping temperature range, resulting in insufficient metal fluidity during pressing. This leads to problems such as incomplete shaping, dimensional deviations, or substandard internal microstructure properties, severely impacting product consistency and reliability. Summary of the Invention

[0005] In order to solve the problem in related technologies that the separation of the heating position and the pressing position leads to excessive temperature drop of the tool holder during the transfer process, which in turn causes unstable pressing and shaping effect, this application provides a tool holder shaping device.

[0006] This application provides a tool holder shaping device with the following technical solution: A tool holder shaping device includes: a base plate, a tool transfer assembly, a heating assembly, and a pressing assembly. The tool transfer assembly is disposed on the base plate and includes a guide rail and a driving component, wherein the driving component is used to drive the tool to move along the guide rail; the heating assembly is disposed on the base plate and includes a heating ring, the heating ring having an annular heating element and a heating ring through hole located at the center of the annular heating element, wherein, when the tool moves to a first position on the guide rail, the tool holder extends into the heating ring through hole so that the annular heating element heats the tool holder; the pressing assembly is disposed on the base plate and is used to press and shape the tool holder when the tool moves to a second position on the guide rail.

[0007] By adopting the above technical solution, this application integrates heating, transfer, and pressing functions into one unit, and uses a drive component to enable the tool to move rapidly between various stations on the same guide rail. This design helps to shorten the physical distance and time from when the tool finishes heating to when pressing begins, greatly reducing heat loss of the tool holder during the transfer process. This helps to ensure that the tool holder remains at a suitable shaping temperature when it reaches the second position, thereby improving the stability and reliability of the pressing and shaping effect.

[0008] Optionally, the pressing assembly includes an upper contour block of the tool holder, a lower contour block of the tool holder, a pressing cylinder, a lifting cylinder, a pressing assembly mounting bracket, and a lifting cylinder mounting bracket; the pressing assembly mounting bracket is connected to the base plate and is used to mount the pressing cylinder, the pressing cylinder is connected to the upper contour block of the tool holder and is used to drive the upper contour block of the tool holder to move; the lifting cylinder mounting bracket is disposed under the base plate and connected to the base plate and is used to mount the lifting cylinder, the base plate has a clearance opening for accommodating the lower contour block of the tool holder so that the lower contour block of the tool holder can be connected to the lifting cylinder.

[0009] By adopting the above technical solution, the upper and lower contour blocks are driven by the coordinated action of the upper and lower cylinders to close and open the mold, which is conducive to achieving rapid coating and high-pressure forming of the heated tool holder.

[0010] Optionally, the tool holder is provided with a first guide rod and a second guide rod on the contour block, and the pressing component mounting bracket is provided with a first through hole and a second through hole for respectively accommodating the first guide rod and the second guide rod.

[0011] By adopting the above technical solution, the cooperation between the guide rod and the guide through hole provides precise guidance for the vertical movement of the contour block on the tool holder, ensuring its stability and accuracy during the pressing process, avoiding pressing deviations caused by offset or shaking, and helping to improve shaping accuracy and pressing efficiency.

[0012] Optionally, the heating assembly further includes a heater, which is mounted on the base plate and connected to the heating ring to provide operating current to the heating ring.

[0013] By adopting the above technical solution, the heating machine provides energy security for the stable operation of the heating ring. Through the principle of induction heating, it can achieve non-contact, rapid, and controllable heating of metal tool holders, making it suitable for use in automated processes that require precise control of heating time and temperature.

[0014] Optionally, the distance between the first position and the second position is less than 80% of the tool length.

[0015] By adopting the above technical solution, the compact workstation layout directly limits the maximum stroke of the drive unit to drive the tool, which is beneficial for realizing rapid transfer between workstations, further shortening the transfer time and reducing temperature drop.

[0016] Optionally, the width of the heating component is less than 50% of the length of the handle.

[0017] By adopting the above technical solution, the narrower width of the heating component helps to concentrate the heating energy in the core area of ​​the handle that needs to be shaped, achieving precise local heating. This not only helps to improve heating efficiency, but also avoids excessive heat conduction to non-target areas such as the blade, which would affect its performance.

[0018] Optionally, the tool transfer assembly further includes a tool fixing plate, the driving member is connected to the tool fixing plate to drive the tool fixing plate to reciprocate along the guide rail, and the tool fixing plate is provided with a positioning slot for carrying the tool.

[0019] By adopting the above technical solution, the cutting tool is stably fixed and supported through the positioning slot, which provides a basis for the subsequent driving components to drive its precise movement and accurate positioning between various workstations.

[0020] Optionally, the positioning slot includes a bearing recess for accommodating the blade of the cutting tool, and a pick-and-place groove disposed within the bearing recess and having a depth greater than that of the bearing recess.

[0021] By adopting the above technical solution, the bearing recess provides stable support for the tool, while the deeper pick-up and drop groove provides convenient gripping space, which helps to improve the ease of operation and safety of picking up and dropping tools at the loading and unloading station.

[0022] This application also provides a tool holder shaping method using the following technical solution: A tool holder shaping method, employing the tool holder shaping device described in any of the preceding claims, includes the following steps: S2: The tool transfer assembly drives the tool to move from the loading / unloading station to the first position; S3: The heating assembly heats the tool holder of the tool located at the first position; S4: The tool transfer assembly drives the tool to move from the first position to the second position; S5: The pressing assembly presses and shapes the tool holder located at the second position; S6: The tool transfer assembly drives the tool to move to the loading / unloading station.

[0023] By adopting the above technical solution, this method integrates actions such as loading and unloading, heating, transfer, and pressing into an automated and continuous process. The automated steps, controlled by a program, replace traditional manual operations, helping to eliminate interference from human factors and allowing for precise control of the rhythm and timing of the entire shaping process. This, in turn, facilitates the standardization of product quality and improves production efficiency.

[0024] Optionally, in step S4, the time it takes for the tool to move from the first position to the second position is less than 2 seconds.

[0025] By adopting the above technical solution and limiting the transfer time, it is one of the measures that helps prevent the temperature of the tool holder from dropping significantly before it reaches the second position. This helps the subsequent pressing and shaping steps to be carried out in a state with less temperature loss, which is the key to improving the shaping success rate and consistency.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. This application integrates heating, transfer and pressing functions into an integrated device, realizing automated process operation, which helps to shorten the transfer time from heating to pressing, and greatly alleviates the problem of excessive temperature drop of the tool holder caused by manual transfer, thereby improving the stability of pressing and shaping effect.

[0027] 2. By compactly arranging the first and second positions and limiting the transfer time to less than 2 seconds, it helps ensure that the tool holder remains in the appropriate temperature range for shaping when it reaches the second position, providing favorable process conditions for high-quality forming.

[0028] 3. By using a heating element whose width is less than 50% of the length of the tool holder, it is possible to achieve precise and rapid local heating of the tool holder, which improves energy efficiency and at the same time avoids unnecessary thermal impact on other parts of the tool to a certain extent.

[0029] 4. By setting guide rods and guide through holes, the motion accuracy and stability of the pressing assembly during operation are ensured, providing structural protection for the high-precision shaping of the tool holder and further improving product consistency and pass rate. Attached Figure Description

[0030] Figure 1 This is a front view of the overall structure of the tool holder shaping device according to an embodiment of this application.

[0031] Figure 2 This is a schematic diagram of the tool holder shaping device from another angle according to an embodiment of this application.

[0032] Figure 3 This is a side-view structural diagram of the tool holder shaping device according to an embodiment of this application.

[0033] Figure 4 This is a partial structural front view of the tool holder shaping device according to an embodiment of this application.

[0034] Figure 5 This is a partial structural diagram of the tool in the first position in an embodiment of this application.

[0035] Figure 6 This is a partial structural diagram of the tool in the second position in an embodiment of this application.

[0036] Figure 7 This is a schematic flowchart of the tool holder shaping method according to an embodiment of this application.

[0037] Explanation of reference numerals in the attached figures: 10. Base plate; 11. Relief opening; 20. Tool transfer assembly; 21. Guide rail; 22. Servo motor; 23. Tool fixing plate; 23a. Positioning slot; 30. Pressing assembly; 31. Pressing cylinder; 32. Pressing assembly mounting bracket; 32a. First through hole; 32b. Second through hole; 33. Upper contour block of the tool holder; 33a. First guide rod; 33b. Second guide rod; 34. Lower contour block of the tool holder; 35. Lifting cylinder; 36. Lifting cylinder mounting bracket; 40. Heating assembly; 41. Heating ring; 41a. Annular heating element; 41b. Heating ring through hole; 42. Heating ring mounting base; 43. Heating machine; 50. Knife; 51. Handle; 52. Blade. Detailed Implementation

[0038] It should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are based on the orientation shown in the accompanying drawings or the orientation of the device in its normal operating state. These terms are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] The following will be combined with the appendix Figure 1-7 This application will be described in further detail.

[0040] Reference Figures 1 to 3 This application provides a tool holder shaping device. The tool holder shaping device includes: a tool transfer assembly 20 for driving the movement of a tool 50, a heating assembly 40 for locally heating the tool holder 51 of the tool 50, and a pressing assembly 30 for pressing and shaping the heated tool holder 51. In this embodiment, these components are all integrated and mounted on a base plate 10, which provides a solid physical foundation and a unified installation reference for the stable operation of the entire tool holder shaping device.

[0041] Reference Figure 1 and Figure 2 The tool transfer assembly 20 is responsible for driving the tool 50 to move. The tool transfer assembly 20 includes a guide rail 21 fixed horizontally to the base plate 10 and a servo motor 22 as a driving component. In other embodiments, the driving component can also be a stepper motor, or a mechanism driven by a cylinder or hydraulic cylinder, as long as it can achieve precise reciprocating movement of the tool fixing plate 23. Along the effective stroke of the guide rail 21, a first position for heating, a second position for pressing and molding, and a loading / unloading station for manual or robotic arm pick-and-place operations are defined sequentially along its length. Figure 5 This schematically illustrates the state of the tool in the first position. Figure 6This schematically illustrates the second position of the cutting tool. The servo motor 22 is connected to the cutting tool fixing plate 23 and can control the position, speed, and acceleration of the cutting tool fixing plate 23 according to instructions from the PLC or other upper control system. The cutting tool fixing plate 23 has a positioning slot 23a that matches the shape of the cutting tool 50 for stable placement of the cutting tool 50. The internal surface of the positioning slot 23a is designed with a two-level depth structure: one is a bearing recess that fits the contour of the blade 52 of the cutting tool 50, which provides reliable lateral support for the cutting tool 50 during high-speed movement and prevents shaking; the other is a deeper loading and unloading groove at the bottom of the bearing recess, which provides sufficient depth for the operator's fingers or automated robotic grippers to grasp the blade 52, improving the efficiency and safety of picking up and placing the cutting tool at the loading and unloading station.

[0042] Reference Figure 1 , Figure 2 and Figure 5 The heating assembly 40 is located at the first position. The heating assembly 40 includes a heating motor 43 providing high-frequency alternating current as an energy supply unit, a heating ring 41 serving as the core for energy conversion and conduction, and a heating ring mounting base 42 for securely mounting the heating ring 41 at a specific position. The heating ring 41 has an annular heating element 41a and a central heating ring through-hole 41b. When the tool 50 is transported to the first position by the tool transfer assembly 20, its handle 51 portion extends precisely into the heating ring through-hole 41b. During operation, the heating motor 43 outputs a current of preset power and frequency to the heating ring 41, causing it to generate a strong alternating magnetic field in the surrounding space. This magnetic field penetrates the metal handle 51 and induces strong eddy currents within it, ultimately using the Joule heating effect to heat the handle 51 to a suitable state for thermoplastic molding in a very short time (e.g., 3-5 seconds).

[0043] To more clearly define the technical solution of this application, refer to Figure 4The relevant dimensional concepts are defined as follows: the tool length L1 refers to the total axial length of the tool 50 from its farthest tip to its farthest end of the handle. The handle length L2 refers to the axial length of the handle portion of the tool 50, i.e., the handle 51. The heating ring width W refers to the dimension of the heating ring 41 along the axial direction of the handle 51. Based on this, the center distance between the first position and the second position is optimized to be less than 80% of the tool length L1. This compact layout is a physical prerequisite for achieving rapid transfer. At the same time, in order to achieve precise local heating and save energy, the heating ring width W is designed to be less than 50% of the handle length L2. This helps to concentrate the inductive energy highly in the core area that needs to be shaped, effectively avoiding excessive heat conduction to the already shaped and untreated blade 52, which would affect its hardness and toughness.

[0044] Reference Figure 1 , Figure 3 and Figure 6 The pressing assembly 30 is located at the second position. Its function is to apply pressure to the tool holder 51 as quickly as possible after it is heated to a high-temperature softened state, so that it accurately replicates the preset shape of the mold. The pressing assembly 30 includes an upper tool holder contour block 33 and a lower tool holder contour block 34. The inner surfaces of both are precision machined to form a closed cavity that perfectly matches the final target shape of the tool holder 51. The upper tool holder contour block 33 is rigidly connected to the piston rod of the pressing cylinder 31 through a rigid connector, and the pressing cylinder 31 itself is firmly mounted on the pressing assembly mounting bracket 32. In order to further improve the centering accuracy and operational stability of the pressing process, a first guide rod 33a and a second guide rod 33b are also vertically fixed on the upper tool holder contour block 33. The first guide rod 33a and the second guide rod 33b slide in cooperation with the first through hole 32a and the second through hole 32b opened on the pressing assembly mounting bracket 32, which can help resist the lateral force and overturning moment that may be generated during the pressing process. Correspondingly, the lower contour block 34 of the tool holder is connected to the piston rod of the lifting cylinder 35, which is mounted on a lifting cylinder mounting bracket 36 located below the base plate 10. The base plate 10 has a clearance opening 11 to allow the lifting cylinder 35 to connect to the lower contour block 34 of the tool holder. By precisely controlling the solenoid valves of the pressing cylinder 31 and the lifting cylinder 35 through a PLC program, rapid mold closing, high-pressure holding, and rapid opening can be achieved.

[0045] Compared to the decentralized operation mode in existing related technologies that relies on manual transfer between independent high-frequency heating and pressing equipment, the tool holder shaping device of this application is innovative in its structural design. In existing related technologies, heating and pressing are two completely separate processes, completed by two independent machines, and the transfer of workpieces depends entirely on manual handling by operators or machine transfer. This mode not only leads to a fragmented production process and low efficiency, but more seriously, the high-temperature tool holder taken from the heating furnace is in prolonged contact with air during the manual handling to the pressing machine, resulting in intense convection and radiation heat dissipation and a sharp drop in temperature. The operator's skill level, reaction speed, and the physical distance between the two machines all become uncontrollable variables affecting the temperature drop, which can easily cause the tool holder to be below the ideal shaping temperature window when it reaches the second position, resulting in a series of quality defects such as incomplete shaping, uneven microstructure, and poor product dimensional consistency.

[0046] The implementation principle of the tool holder shaping device described in this application embodiment is as follows: This device aims to solve the problem of uncontrollable process parameters (especially temperature) caused by process separation and manual transfer in the aforementioned related technologies through a highly integrated integrated design and fully automated closed-loop control logic. Its core technical idea is to integrate the three functional modules of heating, transfer, and pressing on the same equipment base, and through the servo tool transfer component 20, achieve seamless and rapid station transfer from the completion of heating to the start of pressing, compressing the time window of this critical process to the second level (e.g., less than 2 seconds). This design greatly shortens the exposure time of high-temperature workpieces in air. According to the laws of thermodynamics, the heat dissipation of the workpiece is proportional to time. This application reduces heat loss by compressing the transfer time to the second level (e.g., less than 2 seconds), greatly alleviating the temperature drop problem of the tool holder. This design ensures that when the tool holder enters the pressing component 30 composed of the upper shaping block 33 and the lower shaping block 34 of the tool holder, it can still be precisely maintained within the ideal shaping temperature range (e.g., above 850 degrees Celsius). Meanwhile, the use of a narrow-width heating ring 41 for localized and rapid induction heating of the tool holder, and the use of a first guide rod 33a and a second guide rod 33b to improve the stability of the pressing process, work together to form an efficient, stable, and repeatable automated processing closed loop, thereby significantly improving the dimensional qualification rate, mechanical property consistency, and overall production efficiency of the final product.

[0047] Reference Figure 7This application also provides a tool holder shaping method, which operates on the aforementioned tool holder shaping device. Its automated process is uniformly scheduled by a centralized control system such as a PLC (Programmable Logic Controller). The tool holder shaping method includes the following steps: (Steps S1-S6 only synchronize component names and labels; the descriptions are entirely original) S1: Place the tool 50 to be processed on the tool fixing plate 23 at the loading / unloading station, so that the tool body 52 is securely embedded in the positioning slot 23a. S2: After receiving a start signal, the system sends a command to the servo motor 22, driving the tool fixing plate 23 to move quickly and smoothly along the guide rail 21 and precisely stop at the first position. S3: Induction heating of the tool holder: After the tool 50 is in place, the PLC sends a heating command to the heating machine 43. The heating machine 43 immediately starts working, outputting a high-frequency current with a preset power and frequency to the heating ring 41 to heat the tool holder 51. S4. Rapid Transfer from First Position to Second Position: After the heating process in S3 ends, the PLC system immediately sends a preset transfer command to the servo motor 22. The servo motor 22 responds instantly and drives the tool holder 23 according to the optimized motion curve, causing it to move quickly and smoothly along the guide rail 21 to the second position. This transfer process is precisely scheduled to ensure that the total time from when the tool leaves the first position to when it comes to a complete stop in the second position is controlled within a very short time threshold (e.g., less than 2 seconds), thereby effectively suppressing the temperature drop caused by the tool holder 51 being exposed to air for cooling, and preserving sufficient heat for its subsequent precise shaping. S5. Collaborative Pressing and Shaping: After the tool 50 is stably docked in the second position, the PLC system starts a preset pressing sequence. This sequence first controls the lifting cylinder 35 to move, driving the lower contour block 34 of the tool holder to rise rapidly, supporting and aligning the tool holder 51, which is in a high-temperature state, from below. Subsequently, the downward pressing cylinder 31 is driven, and its piston rod extends to drive the upper contour block 33 of the tool holder to press downward, closing with the lower contour block 34 of the tool holder to form a mold cavity. Under a preset and sufficient pneumatic pressure, the tool holder metal in a plastic state flows under pressure, thereby fully filling the mold cavity. This high-pressure state will be maintained for a predetermined "pressure holding" time (e.g., 2-3 seconds) to promote metal structure formation and complete preliminary cooling and shaping. After the pressure holding stage ends, the piston rods of the downward pressing cylinder 31 and the rising cylinder 35 retract in coordination, opening the mold and completing the shaping. S6, Move to the loading / unloading station and cycle: After pressing, the PLC again instructs the servo motor 22 to move the shaped tool 50 from the second position back to the initial loading / unloading station. At this time, a complete processing cycle ends, and the equipment sends a signal to prompt the operator or automated loading / unloading equipment to take away the finished product and place a new workpiece to be processed, ready to start the next seamless cycle.

[0048] Compared to existing step-by-step processing methods that rely on manual experience, the tool holder shaping method proposed in this application demonstrates significant progress. In existing methods, heating time depends on manual observation or simple timing, transfer time is highly uncertain, and pressing timing relies entirely on operator judgment. The entire process is fraught with human error and random interference, leading to large fluctuations in product quality and a high scrap rate. This method is not only inefficient but also demands extremely high operator skills, making it difficult to achieve standardized, large-scale, and stable production.

[0049] The implementation principle of the tool holder shaping method described in this application embodiment is as follows: The core of this method lies in achieving unprecedented precise control over the "time-temperature" variable, a key variable in the thermal processing technology, through programmed means. All actions, including loading and unloading, heating, transfer, pressing, and finished product return, are decomposed into automated steps uniformly scheduled, tightly linked, and precisely time-defined by controllers such as PLCs. The technical logic is: utilizing the rapidity of induction heating to obtain a controllable initial temperature, then utilizing the extreme speed of servo transfer to maintain this temperature to the maximum extent, and finally utilizing the powerful pressure of hydraulic or pneumatic pressing to achieve precise shaping. This process flow design aims to minimize all variable factors affecting product quality, thereby achieving high stability in tool holder shaping quality and maximum efficiency in the production process.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tool handle shaping device, characterized in that, include: Base plate (10); The tool transfer assembly is disposed on the base plate (10) and includes a guide rail (21) and a drive member, wherein the drive member is used to drive the tool to move along the guide rail (21); A heating assembly, disposed on the base plate (10), includes a heating ring (41), the heating ring (41) having an annular heating body (41a) and a heating ring through hole (41b) located at the center of the annular heating body (41a), wherein, when the tool (50) moves to the first position of the guide rail (21), the tool holder (51) of the tool (50) extends into the heating ring through hole (41b) so that the annular heating body (41a) heats the tool holder (51). A pressing assembly, disposed on the base plate (10), is used to press and shape the tool holder (51) when the tool (50) moves to the second position of the guide rail (21).

2. The tool handle shaping device according to claim 1, characterized in that, The pressing assembly includes an upper contour block (33) of the tool holder, a lower contour block (34) of the tool holder, a pressing cylinder (31), a lifting cylinder (35), a pressing assembly mounting bracket (32), and a lifting cylinder mounting bracket (36). The pressing assembly mounting bracket (32) is connected to the base plate (10) and is used to install the pressing cylinder (31). The pressing cylinder (31) is connected to the upper contour block (33) of the tool holder and is used to drive the upper contour block (33) of the tool holder to move. The lifting cylinder mounting bracket (36) is located under the base plate (10) and is connected to the base plate (10) and is used to install the lifting cylinder (35). The base plate (10) has a clearance opening (11) to accommodate the lower contour block (34) of the tool holder so that the lower contour block (34) of the tool holder is connected to the lifting cylinder (35).

3. The tool holder shaping device according to claim 2, characterized in that, The tool holder has a first guide rod (33a) and a second guide rod (33b) on the contour block (33). The pressing component mounting bracket (32) has a first through hole (32a) and a second through hole (32b). The first through hole (32a) is used to accommodate the first guide rod (33a), and the second through hole (32b) is used to accommodate the second guide rod (33b).

4. The tool handle shaping device according to claim 1, characterized in that, The heating assembly also includes a heater (43), which is mounted on the base plate (10) and connected to the heating ring (41) to provide operating current to the heating ring (41).

5. The tool holder shaping device according to claim 1, characterized in that, The distance between the first position and the second position is less than 80% of the length of the cutting tool (50).

6. The tool holder shaping device according to claim 1, characterized in that, The width of the heating component is less than 50% of the length of the handle (51).

7. The tool holder shaping device according to claim 1, characterized in that, The tool transfer assembly also includes a tool fixing plate (23), the driving member is connected to the tool fixing plate (23) to drive the tool fixing plate (23) to move along the guide rail (21), and the tool fixing plate (23) is provided with a positioning slot (23a) for carrying the tool (50).

8. The tool holder shaping device according to claim 7, characterized in that, The positioning slot (23a) includes a bearing recess for accommodating the blade (52) of the cutting tool (50), and a pick-and-place groove disposed within the bearing recess and having a depth greater than that of the bearing recess.

9. A method for shaping a knife handle, using the knife handle shaping device according to any one of claims 1 to 8, characterized in that, Includes the following steps: S2: The tool transfer assembly drives the tool (50) to move from the loading / unloading station to the first position; S3: The heating assembly heats the handle (51) of the cutting tool (50) located at the first position; S4: The tool transfer assembly drives the tool (50) to move from the first position to the second position; S5: The pressing assembly presses and shapes the tool holder (51) located in the second position; S6: The tool transfer assembly drives the tool (50) to move to the loading / unloading station.

10. The method according to claim 9, characterized in that, In step S4, the time it takes for the cutting tool (50) to move from the first position to the second position is less than 2 seconds.

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