Batch heat treatment equipment for drilling tools

Abstract

The invention relates to the field of metal heat treatment, in particular to drilling tool batch heat treatment equipment which comprises a conveying belt, a plurality of heat treatment units are arranged above the conveying belt, each heat treatment unit comprises two symmetrically-arranged fixing plates, and electromagnetic heating coils are arranged on the opposite side walls of every two adjacent fixing plates. A top plate is connected to the upper portions of every two adjacent fixing plates, and a lifting assembly is arranged between each top plate and the top of the rectangular frame and used for controlling the height of the corresponding electromagnetic heating coil. According to the structure capable of conducting local heat treatment on the multiple drilling tools at the same time, the production efficiency is remarkably improved, the requirement for large-scale production is met, the quenching temperature of different specific parts on the drilling tools is met by accurately controlling the height of the electromagnetic heating coil and accurately providing different heating temperatures for different parts on the drilling tools, and the product quality and consistency are improved.

Description

Technical Field

[0001] The invention relates to the field of metal heat treatment, in particular to batch heat treatment equipment for drilling tools. Background Art

[0002] In the manufacturing of high-end oil drilling equipment, drill tools are core operating tools. Their performance directly impacts drilling efficiency and service life. To improve their wear resistance, fatigue resistance, and impact resistance, drill tools typically require heat treatment. Traditional heat treatment methods primarily include overall quenching, tempering, and localized heat treatment. While overall heat treatment can improve overall drill tool performance, it cannot meet the specific performance requirements of specific localized areas (such as threaded connections and cutting edges).

[0003] Local heat treatment can optimize the treatment of specific parts of the drill tools, but the existing local heat treatment technology has many limitations in mass production. For example, induction heating and flame heating usually require the drill tools to be treated one by one, which makes it difficult to achieve mass production. This not only increases production costs but also reduces production efficiency. In addition, traditional methods such as flame heating are difficult to accurately control the heating temperature and time. Inaccurate temperature control can easily lead to inconsistent heat treatment effects and affect the performance of the drill tools. Furthermore, during batch processing, traditional equipment needs to repeatedly increase and decrease the temperature, resulting in serious energy waste. At the same time, due to the uneven distribution of the temperature field, the heat treatment quality of the same batch of drill tools fluctuates greatly, and the yield rate is difficult to guarantee.

[0004] Therefore, in order to solve the above problems, a batch heat treatment device for drilling tools is proposed. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: a batch heat treatment device for drilling tools described in the present invention includes a conveyor belt, a plurality of heat treatment units are arranged above the conveyor belt, each of the heat treatment units is arranged on the ground through a rectangular frame, and each heat treatment unit includes two symmetrically arranged fixed plates, electromagnetic heating coils are arranged on the opposite side walls of the two adjacent fixed plates, a top plate is connected above the two adjacent fixed plates, a lifting assembly is provided between the top plate and the top of the rectangular frame, the lifting assembly is used to control the height of the electromagnetic heating coil, and the lifting assembly includes a lifting motor fixedly connected to the top of the rectangular frame, the output end of the lifting motor is fixedly connected to a lifting screw, and the lifting screw is threadedly connected to the L-shaped plates arranged at the edge positions on both sides of the top plate;

[0007] The upper surface of the conveyor belt is provided with a fixing seat for placing drilling tools. A row of placement slots for fixing drilling tools is provided on the fixing seat. The drilling tools are vertically assembled in the placement slots and move along the gap between two adjacent fixing plates.

[0008] Preferably, the fixing seat includes a base plate, and a plurality of groups of clips are provided on the upper surface of the base plate. Springs are fixed to the inner walls of two clips in each group, and clamps are fixed to the ends of the springs. Two adjacent clamps form a placement groove, and the clamps are used to clamp the handle of the drill bit.

[0009] Preferably, two base blocks are symmetrically arranged on both sides of the upper surface of the base plate, and an adjusting rod is provided between the two opposite base blocks. Multiple groups of screw threads are evenly arranged on each adjusting rod, and the two pairs of threads in each group are respectively threadedly connected to one side of each group of clips. When the adjusting rod is rotated, the two clips in each group move toward each other synchronously.

[0010] Preferably, the upper edge of each of the splints is bent outward, and extrusion ribs are symmetrically provided on the inner side wall of each splint, and the extrusion ribs are arranged along the arc surface of the inner surface of the splint.

[0011] Preferably, a pulley is provided on the inner outer ring of the end of each adjusting rod, and two adjacent pulleys are connected together by a synchronous belt.

[0012] Preferably, each of the fixed plates is provided with a plurality of electromagnetic heating coils arranged up and down, and the ends of each electromagnetic heating coil extend into threaded holes opened inside both sides of the fixed plate respectively, and a conductive rod is provided in each threaded hole, which is threadedly connected in the threaded hole, and the ends of each conductive rod are connected to an external power supply through a wire.

[0013] Preferably, an arc-shaped plate is provided at the end of each electromagnetic heating coil, each arc-shaped plate extends vertically downward, and the inner concave surface of each arc-shaped plate is threadedly connected to the outer ring of the conductive rod.

[0014] Preferably, a plurality of protective covers are provided on each of the top plates, each protective cover covers the conductive rod, and a clearance hole is provided on the upper end surface of each protective cover.

[0015] Preferably, a guide plate is provided on the inner side walls of the vertical portions of two adjacent rectangular frames, and the guide plate is used to limit the fixing seat to the middle position of the upper surface of the conveyor belt.

[0016] Preferably, a cover plate is commonly provided on the outer side of the plurality of heat treatment units, the bottom of the cover plate is fixedly connected to the rectangular frame, entrances are reserved at both ends of the cover plate, and a plurality of operation windows are provided on the outer surface of the cover plate.

[0017] The present invention is beneficial in that:

[0018] 1. In the present invention, a structure is designed that can perform local heat treatment on multiple drill tools at the same time, which significantly improves production efficiency and meets the needs of large-scale production. By precisely controlling the height of the electromagnetic heating coil, different heating temperatures are accurately provided to different parts of the drill tool, meeting the quenching temperature of different specific parts of the drill tool, improving product quality and consistency. In addition, the batch heat treatment equipment for drill tools can flexibly introduce automated operating procedures, automated and intelligent control, simplify the operating process, reduce the professional requirements for operators, and improve production management efficiency.

[0019] 2. In the present invention, in order to meet the needs of fixed installation of different drilling tools, a placement slot that can elastically clamp drilling tools of different specifications is provided, that is, a clamping plate is provided on the fixed plate, and the back side of the clamping plate is installed on the clip through a spring. At the same time, an adjusting rod is provided to adjust the distance between two adjacent clips, thereby increasing the range of drilling tool specifications that can be installed in the placement slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of a batch heat treatment apparatus for drilling tools according to the present invention;

[0021] Figure 2 is a three-dimensional diagram of the heat treatment unit of the present invention;

[0022] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0023] Figure 4 A three-dimensional diagram of the matching of the sleeve and the conductive rod in the present invention;

[0024] Figure 5 This is a front view of the heat treatment unit of the present invention;

[0025] Figure 6 Schematic diagram of the cooperation between the fixing base and the heat treatment unit in the present invention;

[0026] Figure 7 A top view of the heat treatment unit of the present invention;

[0027] Figure 8 A three-dimensional diagram of the electromagnetic heating coil of the present invention;

[0028] Figure 9 A top view of the fixing seat of the present invention;

[0029] Figure 10 A three-dimensional diagram of the fixing seat of the present invention;

[0030] Figure 11 A three-dimensional diagram of the cooperation between the clip and the adjustment rod in the present invention;

[0031] Figure 12This is a three-dimensional diagram of the cooperation between the clip and the splint in the present invention;

[0032] Figure 13 A schematic diagram of the vertical arrangement of multiple electromagnetic heating coils on a fixed plate in the present invention;

[0033] Figure 14 Schematic diagram of the coordination between the conductive rod and the electromagnetic heating coil in the present invention;

[0034] Figure 15 Schematic diagram of the coordination between the conductive rod and the arc plate in the present invention.

[0035] In the figure: 101, drilling tool; 1, conveyor belt; 2, rectangular frame; 3, fixed plate; 4, electromagnetic heating coil; 5, top plate; 6, lifting motor; 7, lifting screw; 8, L-shaped plate; 9, strip hole; 10, fixing seat; 11, placement groove; 12, bottom plate; 13, clip; 14, spring; 15, clamp; 16, base block; 17, adjusting rod; 18, extruded rib; 19, synchronous belt; 20, threaded hole; 21, conductive rod; 22, wire; 23, curved plate; 24, protective cover; 25, clearance hole; 26, sleeve; 27, driving end; 28, guide plate; 29, adjusting bolt; 30, cover plate; 31, sealing plate. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0037] Reference Figure 1-Figure 3 ,as well as Figure 5-Figure 9 A batch heat treatment equipment for drilling tools includes a conveyor belt 1, a plurality of heat treatment units are arranged above the conveyor belt 1, each of the heat treatment units is set on the ground through a rectangular frame 2, and each heat treatment unit includes two symmetrically arranged fixed plates 3, and electromagnetic heating coils 4 are arranged on the opposite side walls of the two adjacent fixed plates 3. The electromagnetic heating coils 4 are arranged as shown in FIG. Figure 8As shown, the whole is rectangular and bent, with a top plate 5 connected to the top of two adjacent fixed plates 3. A lifting component is provided between the top plate 5 and the top of the rectangular frame 2. The lifting component is used to control the height of the electromagnetic heating coil 4, and the lifting component includes a lifting motor 6 fixed to the top of the rectangular frame 2, and the output end of the lifting motor 6 is fixed to a lifting screw 7, which is threadedly connected to an L-shaped plate 8 provided on the edge positions of both sides of the top plate 5; the lifting motor 6 is controlled by a PLC to rotate forward and reverse, which can realize the up and down movement of the electromagnetic heating coil 4. In the initial state, the lifting component will electromagnetically The heating coil 4 is driven to the highest point, freeing up space for the drill tool 101 to move, so that the drill tool 101 can be loaded under the electromagnetic heating coil 4. The conveyor belt 1 is driven by an external servo motor, and the servo motor can also be controlled by a PLC to accurately control the intermittent movement of the conveyor belt 1 and the stroke of each movement, so as to achieve accurate loading of the drill tool 101. The top plate 5 is provided with a strip hole 9, which is arranged along the length direction of the top plate 5, and the end of the drill tool 101 can pass through the strip hole 9 upward, so that the electromagnetic heating coil 4 can heat the lower part of the drill tool 101.

[0038] The upper surface of the conveyor belt 1 carries a fixed seat 10 for placing the drilling tool 101. The fixed seat 10 is provided with a row of placement slots 11 for fixing the drilling tool 101. The drilling tool 101 is vertically assembled in the placement slot 11 and moves along the gap between two adjacent fixed plates 3.

[0039] In this embodiment, the drill tool batch heat treatment equipment is designed to heat treat multiple drill tools 101 at one time, and can also perform local heat treatment on each drill tool 101, that is, to achieve the purpose of batch heat treatment and local heat treatment of the drill tools 101;

[0040] Specifically, the drill tool batch heat treatment equipment designed in this embodiment can mainly perform heat treatment on the working part and neck of the drill tool 101, and the specific heat treatment is quenching treatment. Through the heating characteristics of the electromagnetic heating coil 4, the quenching heating of the working part or the neck can be quickly achieved. The specific process of quenching heating of the drill tool 101 is as follows:

[0041] Step 1: Loading: Place the drill tools 101 one by one on the fixing base 10, so that the handle of each drill tool 101 is fixed on the fixing base 10 and the working part of the drill tool 101 is vertically facing upwards. Then, the fixing base 10 together with the multiple drill tools 101 are transferred to the conveyor belt 1, and then quenched and heated;

[0042] Step 2: Quenching and heating, the electromagnetic heating coil 4 is energized, and then the conveyor belt 1 is driven to drive the fixed seat 10 to slowly move between the two adjacent fixed plates 3. When the drill 101 is placed under the adjacent electromagnetic heating coil 4, the lifting motor 6 drives the lifting screw 7 to rotate, and the top plate 5, the fixed plate 3 and the electromagnetic heating coil 4 move downward. The electromagnetic heating coil 4 is sleeved on the drill 101 and heats the working part or neck of the drill 101. In this embodiment, the heat treatment unit that can be set above the conveyor belt 1 is not limited to Figure 2 The number of heat treatment units in the embodiment of the present invention can be greater. Each heat treatment unit can heat a part of the drill tool 101. For example, the heat treatment unit near the feeding position of the conveyor belt 1 can heat the cutting part at the top of the working part, while the subsequent heat treatment unit can heat the chip guide part of the working part or the neck. That is, each heat treatment unit is responsible for the quenching heating of a specific part of the drill tool 101, and each heat treatment unit can independently provide different heating temperatures to meet the quenching temperature of different specific parts of the drill tool 101.

[0043] Step 3: Unloading. After each part of the drill tool 101 has been quenched and heat treated, the conveyor belt 1 transports the drill tool 101 to its end, and unloading of the drill tools 101 in a row is achieved synchronously through the transport fixing base 10.

[0044] Subsequently, steps one, two and three can be repeated. The batch heat treatment equipment for drill tools is designed with a structure that can perform local heat treatment on multiple drill tools 101 at the same time, which significantly improves production efficiency and meets the needs of large-scale production. By precisely controlling the height of the electromagnetic heating coil 4, different heating temperatures can be accurately provided to different parts of the drill tool 101 to meet the quenching temperature of different specific parts of the drill tool 101, thereby improving product quality and consistency. The batch heat treatment equipment for drill tools can flexibly introduce automated operating procedures, automated and intelligent control, simplify operating procedures, reduce professional requirements for operators, and improve production management efficiency.

[0045] Reference Figures 9-12 The fixing seat 10 includes a bottom plate 12, and a plurality of groups of clips 13 are provided on the upper surface of the bottom plate 12. A spring 14 is fixed to the inner wall of the two clips 13 in each group, and a clamping plate 15 is fixed to the end of the spring 14. Two adjacent clamping plates 15 surround a placement groove 11, and the clamping plate 15 is used to clamp the handle of the drilling tool 101;

[0046] Taking into account that the machined drill tool 101 has various specifications and sizes, in order to meet the fixed installation requirements of different drill tools 101, a placement groove 11 that can elastically clamp drill tools 101 of different specifications is provided, that is, by arranging a clamping plate 15 on the fixed plate 3, the back side of the clamping plate 15 is installed on the clamping piece 13 through the spring 14. When installing the drill tool 101, the shank of the drill tool 101 is inserted between two adjacent clamping plates 15, and the drill tool 101 is pressed into the placement groove 11 with force. The end face of the shank of the drill tool 101 is pressed against the upper surface of the fixed plate 3. At this time, the drill tool 101 can be installed.

[0047] Reference Figures 9-12 Two base blocks 16 are symmetrically arranged on both sides of the upper surface of the bottom plate 12, and an adjusting rod 17 is provided between the two opposite base blocks 16. Multiple groups of screw threads are evenly arranged on each adjusting rod 17. The two pairs of threads in each group are respectively threadedly connected to one side of each group of clips 13. When the adjusting rod 17 is rotated, the two clips 13 in each group move toward each other synchronously.

[0048] The adjusting rod 17 is used to adjust the distance between two adjacent clips 13, thereby increasing the range of specifications of the drilling tool 101 that can be installed in the placement slot 11. By rotating the adjusting rod 17, each set of screw threads on the adjusting rod 17 drives the end of the clip 13 threadedly connected to it to move, thereby adjusting the distance between two adjacent clips 13. When the outer ring diameter of the shank of the drilling tool 101 is small, the two adjacent clips 13 are adjusted to be closer to each other, and the distance between the two adjacent clamping plates 15 is reduced, so that the drilling tool 101 with a smaller shank diameter can be stably clamped. Similarly, when the outer ring diameter of the shank of the drilling tool 101 is large, the two adjacent clips 13 are adjusted to be farther away from each other, and the distance between the two adjacent clamping plates 15 is increased, so that the placement slot 11 can insert the drilling tool 101 with a larger shank diameter, and the drilling tool 101 is stably clamped by the elastic force of the spring 14.

[0049] Reference Figures 9-12 , the upper edge of each of the splints 15 is bent outward, and an extrusion rib 18 is symmetrically provided on the inner side wall of each splint 15, and the extrusion rib 18 is provided along the arc surface of the inner surface of the splint 15;

[0050] An extrusion rib 18 is provided on the inner side wall of each clamping plate 15. Figure 11 and Figure 12 As shown, when two adjacent clamping plates 15 clamp the drill tool 101, the actual clamping points are the contact points between the four extruded ribs 18 and the drill tool 101, and the four extruded ribs 18 can form a circle. The diameter of the circle is adaptively adjusted according to the different diameters of the outer ring of the shank of the drill tool 101, thereby ensuring that the clamping plates 15 effectively clamp the shank of the drill tool 101 and stabilize the drill tool 101 on the fixing plate 3;

[0051] The arc-shaped arrangement of the clamping plate 15 and the extruded ribs 18 increases the entrance of the handle of the drill 101 into the placement groove 11, thereby facilitating the insertion of the drill 101.

[0052] Reference Figures 9-12 , a pulley is provided on the inner outer ring of the end of each adjusting rod 17, and two adjacent pulleys are connected together by a synchronous belt 19;

[0053] The two adjusting rods 17 on the same fixed plate 3 are connected together by a pulley and a synchronous belt 19. When one of the adjusting rods 17 is rotated, the other adjusting rod 17 rotates synchronously, which can accurately control the relative movement of the ends of the two adjacent clamps 13, ensuring that the two adjacent clamps 15 are arranged symmetrically, so that the four extruded ribs 18 on the two adjacent clamps 15 can be on the same circle, and then the four extruded ribs 18 effectively clamp the handle of the drilling tool 101.

[0054] Reference Figure 3 、 Figure 6 、 Figure 8 and Figure 13 , each of the fixed plates 3 is provided with a plurality of electromagnetic heating coils 4 arranged up and down, and the ends of each electromagnetic heating coil 4 extend into the threaded holes 20 opened inside the two sides of the fixed plate 3, and each threaded hole 20 is provided with a conductive rod 21, which is threadedly connected to the threaded hole 20, and the end of each conductive rod 21 is connected to the external power supply through a wire 22;

[0055] Multiple fixing plates 3 are arranged above and below each other. Figure 13 The electromagnetic heating coil 4 is shown, and the conductive rod 21 is used to electrically connect the wire 22 to the electromagnetic heating coil 4; multiple electromagnetic heating coils 4 are arranged above and below to further refine the heat treatment part on the drill tool 101. The specific operation is as follows: when the rotating conductive rod 21 moves upward, the outer ring of the conductive rod 21 can be electrically connected to a smaller number of electromagnetic heating coils 4, and the heating range is reduced at this time; when the rotating conductive rod 21 moves downward, the outer ring of the conductive rod 21 can be electrically connected to a larger number of electromagnetic heating coils 4, and the heating range is increased at this time; the lifting component is used to control the up and down movement of the electromagnetic heating coil 4, mainly controlling the heating part, and the setting of the conductive rod 21 is mainly used to control the heating range, which can heat a smaller area on the drill tool 101, and the flexible control of the heating part and the heating range can accurately perform heat treatment on drill tools 101 of more specifications and models, and has a wider range of applications.

[0056] Reference Figure 13-15 , an arc-shaped plate 23 is provided at the end of each electromagnetic heating coil 4, each arc-shaped plate 23 extends vertically downward, and the inner concave surface of each arc-shaped plate 23 is threadedly connected to the outer ring of the conductive rod 21;

[0057] An arc-shaped plate 23 is provided at the end of each electromagnetic heating coil 4 to cooperate with the conductive rod 21 and enhance the conductivity between the conductive rod 21 and the electromagnetic heating coil 4. That is, during the up and down movement and adjustment of the conductive rod 21, it is ensured that the conductive rod 21 can be stably electrically connected to the electromagnetic heating coil 4, thereby ensuring that the electromagnetic heating coil 4 can stably perform heat treatment on the drilling tool 101.

[0058] Reference Figure 3 、 Figure 4 、 Figure 5 and Figure 7 , each of the top plates 5 is provided with a plurality of protective covers 24, each protective cover 24 covers the conductive rod 21, and a clearance hole 25 is provided on the upper end surface of each protective cover 24;

[0059] In this embodiment, in order to adapt to the rotation of the conductive rod 21, a sleeve 26 is provided at the end of the conductive wire 22. The sleeve 26 is sleeved on the outer ring of the conductive rod 21. Even if the conductive rod 21 rotates and moves up and down, the conductive wire 22 can still be electrically connected to the conductive rod 21 and will not be twisted or entangled with the rotation of the conductive rod 21.

[0060] At the same time, for the sake of electrical safety, a protective cover 24 is set at the connection position between the conductive rod 21 and the wire 22. The protective cover 24 is used to cover the conductive rod 21 and the wire 22 exposed outside the fixed body, and a space is reserved in the protective cover 24 for the conductive rod 21 to move up and down, and an insulating driving end 27 is set at the upper end of the conductive rod 21. The driving end 27 passes through the clearance hole 25. The rotating driving end 27 controls the up and down movement of the conductive rod 21 to ensure electrical safety.

[0061] Reference Figure 2-Figure 7 , a guide plate 28 is provided on the inner side wall of the vertical portion of the two adjacent rectangular frames 2, and the guide plate 28 is used to limit the fixing seat 10 to the middle position of the upper surface of the conveyor belt 1;

[0062] When placing the fixing seat 10 on the conveyor belt 1, it is necessary to consider the placement of the fixing seat 10, that is, whether the drill bit will collide with the fixing plate 3, otherwise the drilling tool 101 will not be able to smoothly enter under the electromagnetic heating coil 4. For this purpose, a guide plate 28 is provided. The distance between two adjacent guide plates 28 is adapted to the width of the fixing seat 10, and the gap between the inner side walls of the two adjacent guide plates 28 is matched with the outer side walls of the fixing seat 10 on both sides. This can ensure that the fixing seat 10 moves smoothly on the conveyor belt 1 and that the drilling tool 101 can tend to the middle position below the two adjacent fixing plates 3;

[0063] At the same time, the fixed plate 3 provided in this embodiment also has a variety of sizes, which is also to adapt to the placement of drilling tools 101 of more specifications, and the width sizes of both sides of the fixed plate 3 are various. The outer wall of the guide plate 28 is rotatably connected with an adjusting bolt 29, and the adjusting bolt 29 is threadedly connected to the vertical part of the rectangular frame 2. By rotating the adjusting thread, the distance between two adjacent guide plates 28 can be adjusted, thereby adapting to fixed plates 3 of different sizes.

[0064] Reference Figure 1 A cover plate 30 is provided on the outside of the plurality of heat treatment units. The bottom of the cover plate 30 is fixed to the rectangular frame 2. Entrances are reserved at both ends of the cover plate 30, and a plurality of operation windows are provided on the outer surface of the cover plate 30.

[0065] The cover plate 30 is mainly used to cover the heat, reduce the amount of heat treatment unit radiating outward, and provide a good working environment for the staff. At the same time, the cover plate 30 is provided with an entrance at both ends to ensure that the drilling tool 101 can pass through while also controlling the amount of heat radiating outward.

[0066] Taking into account the adjustment of the guide plate 28 and the adjustment of the conductive rod 21, multiple operation windows are set on the cover plate 30. A hinged sealing plate 31 is set at the operation window position. The sealing plate 31 can be opened at any time to operate the guide plate 28 and the conductive rod 21.

[0067] In summary, the drill tool batch heat treatment equipment designed by the present invention is a structure that can perform local heat treatment on multiple drill tools 101 at the same time, significantly improving production efficiency and meeting the needs of large-scale production. By precisely controlling the height of the electromagnetic heating coil 4, different heating temperatures are accurately provided to different parts of the drill tool 101 to meet the quenching temperature of different specific parts of the drill tool 101, thereby improving product quality and consistency. In addition, the drill tool batch heat treatment equipment can flexibly introduce automated operating procedures, automated and intelligent control, simplify operating procedures, reduce professional requirements for operators, and improve production management efficiency.

[0068] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A batch heat treatment equipment for drilling tools, characterized by: It includes a conveyor belt, and a plurality of heat treatment units are arranged above the conveyor belt. Each of the heat treatment units is arranged on the ground through a rectangular frame, and each heat treatment unit includes two symmetrically arranged fixed plates, and electromagnetic heating coils are arranged on the opposite side walls of the two adjacent fixed plates. A top plate is connected above the two adjacent fixed plates, and a lifting assembly is provided between the top plate and the top of the rectangular frame. The lifting assembly is used to control the height of the electromagnetic heating coil, and the lifting assembly includes a lifting motor fixedly connected to the top of the rectangular frame, and the output end of the lifting motor is fixedly connected to a lifting screw, and the lifting screw is threadedly connected to the L-shaped plates arranged at the edge positions on both sides of the top plate; The upper surface of the conveyor belt is provided with a fixing seat for placing drilling tools. A row of placement slots for fixing drilling tools is provided on the fixing seat. The drilling tools are vertically assembled in the placement slots and move along the gap between two adjacent fixing plates.

2. The batch heat treatment equipment for drilling tools according to claim 1, characterized in that: The fixing seat includes a base plate, the upper surface of which is provided with multiple groups of clips, the inner side walls of two clips in each group are fixed with springs, the ends of the springs are fixed with clamps, and two adjacent clamps form a placement groove, which is used to clamp the handle of the drilling tool.

3. The batch heat treatment equipment for drilling tools according to claim 2, characterized in that: Two base blocks are symmetrically arranged on both sides of the upper surface of the base plate, and an adjusting rod is provided between the two opposite base blocks. Multiple groups of screw threads are evenly arranged on each adjusting rod. The two pairs of threads in each group are respectively threadedly connected to one side of each group of clips. When the adjusting rod is rotated, the two clips in each group move toward each other synchronously.

4. The batch heat treatment equipment for drilling tools according to claim 2, characterized in that: The upper edge of each of the splints is bent outward, and extrusion ribs are symmetrically arranged on the inner side wall of each splint, and the extrusion ribs are arranged along the arc surface of the inner surface of the splint.

5. The batch heat treatment equipment for drilling tools according to claim 3, characterized in that: A pulley is provided on the inner outer ring of the end of each adjusting rod, and two adjacent pulleys are connected together by a synchronous belt.

6. The drilling tool batch heat treatment equipment according to claim 1, characterized in that: A plurality of electromagnetic heating coils arranged up and down are provided on each of the fixed plates, and the ends of each electromagnetic heating coil extend into threaded holes opened inside both sides of the fixed plate respectively. A conductive rod is provided in each threaded hole, and the conductive rod is threadedly connected in the threaded hole. The end of each conductive rod is connected to an external power supply through a wire.

7. The drilling tool batch heat treatment equipment according to claim 6, characterized in that: An arc-shaped plate is provided at the end of each electromagnetic heating coil. Each arc-shaped plate extends vertically downward, and the inner concave surface of each arc-shaped plate is threadedly connected to the outer ring of the conductive rod.

8. The drilling tool batch heat treatment equipment according to claim 7, characterized in that: Each of the top plates is provided with a plurality of protective covers, each of which covers the conductive rod, and a clearance hole is provided on the upper end surface of each protective cover, and the upper end of the conductive rod passes through the clearance hole.

9. The drilling tool batch heat treatment equipment according to claim 1, characterized in that: A guide plate is provided on the inner side walls of the vertical parts of two adjacent rectangular frames, and the guide plate is used to limit the fixing seat to the middle position of the upper surface of the conveyor belt.

10. The drilling tool batch heat treatment equipment according to claim 1, characterized in that: A cover plate is commonly provided on the outside of the plurality of heat treatment units. The bottom of the cover plate is fixedly connected to the rectangular frame. Entrances are reserved at both ends of the cover plate, and a plurality of operation windows are provided on the outer surface of the cover plate.

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