A continuous feeding and annealing device for a drill

Abstract

The present application relates to the technical field of drill processing, in particular to a drill continuous feeding annealing device, comprising a conveyor frame, a quenching tank, a carrier, a U-shaped frame, a turnover assembly, a linear push-pull mechanism, a heating unit and a position sensor assembly. The conveyor frame is provided with input and output transmission belts, and the carrier is located between the two. The top of the carrier is provided with first and second v-shaped grooves. The turnover assembly includes a turnover arm, a turnover block and a clamp. The counterweight rollers at both ends of the turnover block cooperate with the v-shaped grooves to realize the state switching of the turnover arm. The linear push-pull mechanism drives the U-shaped frame to move the turnover assembly, and cooperates with the guiding and buffering assembly to ensure smoothness. Through the linkage of the sensor and the controller, the drill feeding, heating, quenching and continuous automatic operation are realized, without the need for complex numerical control mechanical arm, thus reducing the cost and improving the efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drill tool processing, in particular to a drill tool continuous feeding annealing device. BACKGROUND

[0002] Drill tool annealing refers to a heat treatment process of slowly cooling the drill tool (such as a drill bit) after heating it to a specific temperature, and its core function is to eliminate internal stress generated during the manufacture of the drill tool, refine the grain, and improve the toughness of the material, so as to avoid the fracture of the drill tool due to excessive brittleness in use, and significantly improve its service life and working reliability. It is a necessary process to ensure that the mechanical properties of the drill tool meet the requirements of high-strength operations such as mining.

[0003] In the existing drill tool annealing technology, dispersed equipment or semi-automatic production lines are mostly used: the drill tool is placed in the heating device by manual to complete heating, and then transferred to the quenching tank for annealing by manual or simple mechanical transfer. Some automatic equipment relies on precise numerical control mechanical arm to realize material transfer, and needs to be matched with independent heating, transfer and quenching units, and each link relies on manual adjustment or complex program control.

[0004] The existing drill tool annealing technology has the following problems: first, it relies on expensive numerical control mechanical arm, and the cost of equipment purchase and maintenance is high, and the structure is complex and prone to failure; second, the degree of automation is limited, and the connection between heating, transfer and annealing links is loose, and manual intervention is needed for adjustment, making it difficult to realize continuous feeding; third, the operation rhythm is unreasonable, and the unnecessary waiting time is long (such as transfer and positioning time), and the overall efficiency is low; fourth, the equipment structure is complex, the parts are many, the durability is poor, and the capacity of batch production is weak; the existing technology has high cost, low efficiency and poor continuity, and it is difficult to meet the needs of large-scale production of drill tools, and there are certain defects, so it is necessary to develop a drill tool continuous feeding annealing device. SUMMARY

[0005] In view of the above-mentioned defects and problems, the present application provides a drill tool continuous feeding annealing device, which aims to realize automatic heating, annealing treatment and continuous feeding of drill tools, and improve the annealing efficiency of drill tools.

[0006] The technical problem solved by the present application is that a drill tool continuous feeding annealing device comprises a quenching tank and a conveyor frame, an input conveying belt and an output conveying belt are arranged above and below in the conveyor frame, and a carrier, a U-shaped frame, a turnover assembly, a linear push-pull mechanism, a guide buffer assembly and a heating unit are further included; the carrier is installed on the conveyor frame, a first V-shaped groove and a second V-shaped groove are respectively arranged on the top of the carrier in the front-rear direction, and a backing plate is arranged on the left side of the first V-shaped groove, and a guide opening is arranged on the side of the end of the backing plate; the turnover assembly is arranged above the carrier and comprises a turnover arm, a turnover block and a clamp, a rotating sleeve is fixed to the rear end of the turnover arm, counterweight rollers are respectively installed at the two ends of the turnover block, the turnover block is horizontally fixed on the rotating sleeve, and the clamp is fixed to the front end of the turnover arm; a mandrel is arranged in the rotating sleeve, and the front end of the U-shaped frame is connected to the two ends of the mandrel; the U-shaped frame is slidably arranged on the carrier through the guide buffer assembly, and the linear push-pull mechanism is used to drive the U-shaped frame to move transversely along the carrier; when the U-shaped frame moves forward, the counterweight roller at the right end of the turnover block falls into the first V-shaped groove, and at the same time, the turnover arm is turned downward; when the U-shaped frame moves backward, the counterweight roller at the left end of the turnover block falls into the first V-shaped groove, and at the same time, the turnover arm is turned upward; the heating unit is arranged above the carrier; and the quenching tank is arranged below the carrier.

[0007] Through the cooperation of the turnover assembly and the V-shaped groove, efficient station switching and low-cost operation are realized, through the mechanical positioning mode of the acute triangle turnover block and the left and right counterweight rollers cooperating with the first and second V-shaped grooves, only the clamping and turnover of the counterweight rollers in the V-shaped groove can complete the multi-station switching of “inclined material receiving→vertical heating→inclined feeding→vertical quenching”, the equipment purchase cost and maintenance cost are reduced, at the same time, the turnover action of the turnover block only stays for the necessary time during heating (the first V-shaped groove) and quenching (the first V-shaped groove), the station switching is realized through the rapid guidance and turnover of the counterweight rollers during the remaining period, and the overall working efficiency of the drill tool annealing is improved.

[0008] The servo hydraulic cylinder can accurately control the moving stroke of the U-shaped frame, and through the linkage of the position sensors (one, two and three) and the controller, the full-process automation triggering of “drill tool positioning→heating starting→quenching positioning→material receiving and outputting” is realized, for example, the position sensor one starts heating only after detecting that the drill tool enters the heating coil, so as to avoid energy waste; the position sensors two and three accurately control the timing of material receiving and outputting, so as to ensure that the drill tool does not jam in the inputting, heating, quenching and outputting links, and the consistency of the annealing quality is improved; through the clamping and releasing action of the electromagnetic clamping jaw and the cooperation of the conveying belt, the transition assembly and the material receiving and outputting assembly, seamless connection of the drill tool from inputting to outputting is realized without manual intervention, the efficiency bottleneck of “manual feeding→heating→manual discharging→quenching” in the traditional non-continuous operation is solved, and the continuous production demand is met. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1This is one of the schematic diagrams of the overall structure of the present invention.

[0010] Figure 2 This is the second schematic diagram of the overall structure of the present invention.

[0011] Figure 3 This is one of the structural schematic diagrams of the stage and the flipping assembly.

[0012] Figure 4 This is a schematic diagram of the flip component.

[0013] Figure 5 for Figure 4 Top view.

[0014] Figure 6 This is a front sectional view of the stage and the flipping assembly.

[0015] In the diagram: 1-Conveyor frame, 11-Input conveyor belt, 12-Output conveyor belt, 13-Base, 14-Support rod, 2-Platform, 21-First V-groove, 22-Second V-groove, 23-Pad plate, 231-Guide port, 4-U-shaped frame, 5-Tilting assembly, 51-Tilting arm, 52-Tilting block, 521-Left counterweight roller, 522-Right counterweight roller, 53-Swivel sleeve, 54-Mandrel, 55-Clamp, 61-Servo hydraulic cylinder, 62-Support, 63-Hinge seat, 7-Guide Buffer assembly, 71-track, 72-slider, 73-base plate, 74-inner and outer telescopic sleeves, 75-spring, 8-heating unit, 81-heating coil, 82-stand, 9-quenching tank, 101-position sensor one, 102-position sensor two, 103-position sensor three, 110-transition assembly, 111-drive motor, 112-roller frame, 113-shaft seat, 120-guiding assembly, 121-swing frame, 122-guiding groove, 123-control hydraulic cylinder. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Example 1: Existing brazing tool annealing technology has the following problems: First, it relies on expensive CNC robotic arms, resulting in high equipment purchase and maintenance costs, complex structures, and susceptibility to failure; second, the degree of automation is limited, with loose connections between heating, transfer, and annealing processes, requiring manual intervention and adjustment, making continuous feeding difficult; third, the work rhythm is unreasonable, with long unnecessary waiting times (such as transfer and positioning time-consuming), resulting in low overall efficiency; fourth, the equipment structure is complex, with many parts, poor durability, and weak adaptability to mass production; existing technologies are costly, inefficient, and lack continuity, making it difficult to meet the needs of large-scale brazing tool production.

[0018] To address the aforementioned issues, this embodiment provides a continuous feeding annealing device for drill bits, comprising a conveyor frame 1, a quenching tank 9, a platform 2, a U-shaped frame, a flipping assembly 5, a linear push-pull mechanism, a guide buffer assembly, and a heating unit 8; aiming to achieve continuous feeding annealing of drill bits and improve operational efficiency through a device that does not require a complex CNC robotic arm, has a simple and durable structure, and is low in cost.

[0019] like Figures 1-2 As shown, an input conveyor belt 11 and an output conveyor belt 12 are arranged vertically inside the conveyor frame 1. The length of the output conveyor belt 12 is greater than that of the input conveyor belt 11. A base 13 for mounting a platform 2 is fixed on the conveyor frame 1. The base 13 is located between the input conveyor belt 11 and the output conveyor belt 12. The platform 2 is fixedly installed inside the base 13 and is also supported by a support rod 14. The support rod 14 is fixedly connected to the conveyor frame 1.

[0020] like Figure 3 , Figure 4 and Figure 6 As shown, a first V-shaped groove 21 and a second V-shaped groove 22 are respectively provided on the top of the platform 2 along the front and back. As a further optimization, the inner left side wall of the first V-shaped groove 21 can be arc-shaped, and the inner two side walls of the second V-shaped groove 22 are both arc-shaped.

[0021] A pad 23 is fixedly installed on the top of the platform 2. The pad 23 is located on the left side of the first V-groove 21, and the pad 23 has an arc-shaped guide 231 on the end side facing the first V-groove 21. The guide 231 can forcefully guide the left counterweight roller 521 at the left end of the flipping block 52, so that the left counterweight roller 521 falls into the first V-groove 21.

[0022] The front sides of the platform 2 narrow, and it flips downward in conjunction with the tilting arm 51.

[0023] The flipping component 5 is positioned above the platform 2, such as... Figure 4 As shown, the flipping assembly 5 includes a flipping arm 51, a flipping block 52, and a clamp 55. A rotating sleeve 53 is fixed at the rear end of the flipping arm 51. A left counterweight roller 521 and a right counterweight roller 522 are respectively installed at both ends of the flipping block 52, and the flipping block 52 is horizontally fixedly fitted on the rotating sleeve 53. The clamp 55 is fixedly installed at the front end of the flipping arm 51. The clamp 55 adopts an electromagnetic claw, which is connected to the controller signal. The electromagnetic claw is used to clamp the drill bit. The drill bit targeted in this solution is a drill tip.

[0024] In this embodiment, the structure of the flip block 52 is an acute triangle, the vertex of the flip block 52 is fixedly fitted on the rotating sleeve 53, and in order to match the flip block 52, the groove depth of the second V-shaped groove 22 is less than the groove depth of the first V-shaped groove 21.

[0025] A mandrel 54 is inserted inside the rotating sleeve 53, and both ends of the mandrel 54 extend out of the rotating sleeve 53. The front end of the U-shaped frame 4 is connected with the mandrel 54 The two end portions are fixedly connected The rotating sleeve 53 can rotate relative to the spindle 54, and the flipping block 52 is supported by the platform 2. When the U-shaped frame 4 moves laterally along the carrier 2 The right counterweight roller 522 of the turnover block 52 falls into the second V-shaped groove 22, Or the left counterweight roller 521 of the turnover block 52 falls into the first V-shaped groove 21;

[0026] The bottom of the U-shaped frame 4 is horizontally slidably mounted on the platform 2 via the guide buffer assembly 7, such as Figure 4 As shown, the guide buffer assembly 7 includes a track 71, a slider 72, a base plate 73, inner and outer telescopic sleeves 74, and a spring 75. The track 71 is set on both sides of the top of the platform 2. The slider 72 is fixed to the bottom of the base plate 73. The slider 72 is slidably connected to the track 71 to provide forward and backward linear motion. The top of the base plate 73 is connected to the U-shaped frame 4 through the inner and outer telescopic sleeves 74. The inner and outer telescopic sleeves 74 include an inner telescopic rod and an outer sleeve that are slidably connected to each other. The bottom of the outer sleeve is fixed to the top of the base plate 73, and the top of the inner telescopic rod is fixedly connected to the bottom of the U-shaped frame 4. The spring 75 is fitted between the outer sleeve and the U-shaped frame 4. The U-shaped frame 4 can move laterally on the platform 2 along the track 71, and at the same time, the vertical lifting and buffering of the U-shaped frame 4 is realized through the inner and outer telescopic sleeves 74.

[0027] The U-shaped frame 4 achieves horizontal linear movement through the guide buffer assembly 7. The inner and outer telescopic sleeves 74 cooperate with the spring 75 to achieve vertical lifting and buffering of the U-shaped frame 4, so that the U-shaped frame 4 has both stability and buffering in horizontal movement, ensuring that the flipping assembly 5 moves accurately and is durable.

[0028] like Figure 2 As shown, the linear push-pull mechanism is used to drive the U-shaped frame 4 to move laterally along the platform 2. The linear push-pull mechanism includes a servo hydraulic cylinder 61, a support 62, and a hinge seat 63. The servo hydraulic cylinder 61 is a servo-controlled multi-stage hydraulic cylinder, which can precisely control multiple strokes. The support 62 is fixedly installed inside the conveyor frame 1. The cylinder end of the servo hydraulic cylinder 61 is hinged to the support 62, and the hinge seat 63 is installed at the rear end of the U-shaped frame 4. The output end of the servo hydraulic cylinder 61 is hinged to the hinge seat 63. The servo hydraulic cylinder 61 can drive the U-shaped frame 4 to drive the flipping assembly 5 to complete multi-stage movements. With the mechanical positioning of the flipping block 52 and the V-groove, it realizes precise driving of the entire process from receiving to feeding.

[0029] When the servo hydraulic cylinder 61 controls the U-shaped frame 4 to move forward, the right counterweight roller 522 at the right end of the flipping block 52 will fall into the second V-shaped groove 22, and at the same time, the flipping arm 51 will flip downward and become upright. After the right counterweight roller 522 falls into the bottom of the second V-shaped groove 22, the right counterweight roller 522 will be locked in the bottom of the second V-shaped groove 22. At this time, the flipping block 52 can continue to flip with the right counterweight roller 522 as the center, so that the flipping arm 51 becomes an inclined feeding state.

[0030] When the servo hydraulic cylinder 61 controls the U-shaped frame 4 to move backward, the left counterweight roller 521 at the left end of the flipping block 52 will be forcibly guided by the guide port 231 of the pad 23 and fall into the first V-shaped groove 21. At the same time, the flipping arm 51 will flip upward and become upright. After the left counterweight roller 521 falls into the bottom of the first V-shaped groove 21, the left counterweight roller 521 will be locked in the bottom of the first V-shaped groove 21. At this time, the flipping block 52 can continue to flip with the left counterweight roller 521 as the center, so that the flipping arm 51 becomes an inclined receiving state.

[0031] like Figures 1-2 As shown, the heating unit 8 is located above the platform 2 to heat the drill bit. The heating unit 8 includes a heating coil 81, a stand 82, and a heating machine. The stand 82 is fixed on the conveyor frame 1. The heating coil 81 is installed on the top seat of the stand 82 and is connected to the output end of the heating machine. When the heating coil 81 is energized, it can heat the drill bit. The heating coil 81 corresponds vertically to the first V-groove 21. When the flipping arm 51 flips upward and is in a vertical position, the drill bit in the clamp 55 is located in the heating coil 81 and is heated by the heating coil 81. The quenching tank 9 is located below the platform 2 to anneal the drill bit. The quenching tank 9 corresponds vertically to the second V-groove 22. When the flipping arm 51 flips downward and is in a vertical position, the drill bit in the clamp 55 is located in the quenching tank 9 to anneal the drill bit.

[0032] The flipping block 52 has left and right counterweight rollers 522 at both ends. These are matched with the first V-shaped groove 21 (positioning the left counterweight roller 521) and the second V-shaped groove 22 (positioning the right counterweight roller 522) with different groove depths. By locking and flipping the counterweight rollers in the groove, the flipping arm 51 can switch between four states: tilting to receive materials, vertical heating, tilting to feed materials, and vertical quenching. Multi-station actions can be completed without complex joint structures.

[0033] The sensor assembly includes position sensor 101, position sensor 2 102, and position sensor 3 103. Each sensor is connected to the controller signal. Position sensor 101 is installed on the top of the stand 82. Position sensor 101 can detect the position of the drill bit. When position sensor 101 detects that the drill bit is inside the heating coil 81, position sensor 101 sends a signal to the controller. The controller controls the heating coil 81 to start and heat the drill bit.

[0034] Position sensor 2 102 is located on the inner right side wall of the second V-groove 22. When the flipping block 52 continues to flip in the second V-groove 22 with the right counterweight roller 522 as the center, position sensor 2 102 detects that the flipping block 52 is close to the inner right side wall of the second V-groove 22. Position sensor 2 102 sends a signal to the controller. The controller controls the receiving assembly 120 to receive the drill bit. The receiving assembly 120 guides the annealed drill bit to the output conveyor belt 12 and outputs the drill bit through the output conveyor belt 12.

[0035] Position sensor 3 103 is set on the top of pad 23. When the flipping block 52 continues to flip in the first V-groove 21 with the left counterweight roller 521 as the center, position sensor 3 103 detects that the flipping block 52 is close to the end of pad 23. Position sensor 3 103 sends a signal to the controller. The controller controls the input conveyor belt 11 to input the drill bit and transitions the clamp 55 through the transition component 110 so that the clamp 55 can pick up the drill bit and complete the input of the drill bit.

[0036] By linking position sensor 101 (controlling heating start), position sensor 2 102 (controlling the action of the receiving component 120), and position sensor 3 103 (controlling the action of the input transmission belt 11 and the transition component 110) with the controller, and cooperating with the gripping / releasing action of the electromagnetic claw, the entire process of the drill bit from input, heating, quenching to output is automated and continuous.

[0037] like Figure 1 As shown, the transition assembly 110 can transition the drill bit from the input conveyor belt 11 to the clamp 55. The transition assembly 110 is located in front of the input conveyor belt 11 and includes a drive motor 111, a roller frame 112 and a shaft seat 113. The shaft seat 113 is mounted on the conveyor frame 1, and the roller frame 112 is mounted on the shaft seat 113 via a rotating shaft. A roller is installed inside the roller frame 112. The output end of the drive motor 111 is connected to the rotating shaft to control the roller frame 112 to rotate. The rotation of the roller frame 112 can transition the drill bit into the clamp 55.

[0038] like Figure 2 As shown, the receiving assembly 120 can receive the drill bit and guide it to the output conveyor belt 12. The receiving assembly 120 is located below the platform 2. The receiving assembly 120 includes a swing frame 121, a receiving guide groove 122, and a control hydraulic cylinder 123. The top of the swing frame 121 is hinged to the bottom of the platform 2. The receiving guide groove 122 is installed at an incline at the bottom of the swing frame 121 and is located between the output conveyor belt 12 and the quenching tank 9. The cylinder end of the control hydraulic cylinder 123 is hinged to the bottom of the platform 2, and its output end is hinged to the swing frame 121 to control the swing frame 121 to swing. By swinging the swing frame 121, the receiving guide groove 122 can receive the drill bit.

[0039] The transition component 110 achieves a smooth transition of the drill bit from the input conveyor belt 11 to the clamp 55 through the flip-up roller frame 112; the receiving component 120 uses the swing frame 121 to drive the inclined receiving guide groove 122 to achieve precise receiving of the quenched drill bit to the output conveyor belt 12. The two are seamlessly connected with the main drive mechanism to ensure uninterrupted continuous feeding.

[0040] Workflow:

[0041] S1: In the initial state, the servo hydraulic cylinder 61 pulls the U-shaped frame 4 backward, and the left counterweight roller 521 of the flipping block 52 falls into the first V-shaped groove 21 and is fixed at the bottom of the groove. The flipping arm 51 flips upward synchronously with the flipping block 52. Then the flipping block 52 continues to flip with the left counterweight roller 521 as the center, so that the flipping arm 51 becomes an inclined receiving state. When the position sensor 3 103 detects that the flipping block 52 is close to the inner left side wall of the first V-shaped groove 21, the controller controls the input conveyor belt 11 to input the drill bit, and the transition component 110 transitions the clamp 55. The controller controls the clamp 55 to pick up the drill bit, and completes the input of the drill bit.

[0042] S2: Servo hydraulic cylinder 61 pushes U-shaped frame 4 forward. At this time, the flipping block 52 still flips with the left counterweight roller 521 as the center. The flipping arm 51 becomes upright in the first V-groove 21, so that the drill bit is located in the heating coil 81. At the same time, when the position sensor 101 detects that the drill bit is located in the heating coil 81, the controller controls the heating coil 81 to start and heat the drill bit.

[0043] S3: Servo hydraulic cylinder 61 pushes U-shaped frame 4 forward, the left counterweight roller 521 of flipping block 52 disengages from the first V-groove 21, and the entire flipping block 52 moves horizontally on the platform 2.

[0044] S4: Servo hydraulic cylinder 61 pushes U-shaped frame 4 forward, the right counterweight roller 522 of flipping block 52 falls into the second V-shaped groove 22 and is locked at the bottom of the groove. Flipping arm 51 flips down synchronously with flipping block 52. Then flipping block 52 continues to flip with the right counterweight roller 522 as the center. Flipping arm 51 becomes upright in the first V-shaped groove 21, so that the drill bit is located in the quenching tank 9, and the drill bit is annealed.

[0045] S5: The servo hydraulic cylinder 61 pushes the U-shaped frame 4 to move forward, and the turnover block 52 continues to turn around the right counterweight roller 522, The turnover arm 51 becomes the inclined feeding state When position sensor 102 detects that the flipping block 52 is close to the inner right side wall of the second V-groove 22, the controller controls the receiving assembly 120 to receive the drill bit and controls the clamp 55 to release the drill bit. The drill bit is then transported to the output conveyor belt 12 through the receiving assembly 120 to complete the output of the drill bit.

[0046] S6: Servo hydraulic cylinder 61 pulls back the U-shaped frame 4 to reset it to the initial state, and repeats the above steps S1-S5 to achieve continuous feeding and annealing of the drill bit.

[0047] This solution has a simple and durable structure, low initial investment cost, low maintenance cost, and does not require a complex and expensive CNC robotic arm, thus reducing the cost of use;

[0048] When the left counterweight roller 521 of the flipping block 52 falls into the first V-shaped groove 21, making the flipping block 52 upright, the clamp 55 faces upward, achieving heating of the drill bit; when the right counterweight roller 522 of the flipping block 52 falls into the second V-shaped groove 22, making the flipping block 52 upright, the clamp 55 faces downward, achieving quenching of the drill bit; that is, except for the necessary time occupied by heating in the first V-shaped groove 21 and quenching in the second V-shaped groove 22, the flipping speed of the flipping block 52 is very fast during the remaining time, improving the overall working efficiency. Example 2: This embodiment of a continuous feeding annealing device for drill bits will be described focusing on the differences from that in Example 1.

[0049] In this embodiment, considering the horizontal lifting stroke of the U-shaped frame during the process of the servo hydraulic cylinder pushing and pulling the U-shaped frame, the inner telescopic rod and the outer sleeve are also telescopic structures, that is, the inner telescopic rod is a two-section telescopic structure and the outer sleeve is also a two-section telescopic structure.

[0050] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. For example, the heating coil can also adopt a U-shaped open structure and a stand is set on one side of the conveyor frame to install the heating machine.

Claims

1. A continuous feeding annealing device for drill bits, comprising a quenching tank and a conveyor frame, wherein an input conveyor belt and an output conveyor belt are arranged vertically within the conveyor frame, characterized in that, It also includes a platform, a U-shaped frame, a flipping assembly, a linear push-pull mechanism, a guide buffer assembly, and a heating unit; the platform is installed on the conveyor frame, and the top of the platform is provided with a first V-shaped groove and a second V-shaped groove in the front-back direction, and a pad is provided on the left side of the first V-shaped groove, and a guide opening is provided on the side of the end of the pad; The flipping assembly is located above the platform and includes a flipping arm, a flipping block, and a clamp. A rotating sleeve is fixed to the rear end of the flipping arm, counterweight rollers are installed at both ends of the flipping block, and the flipping block is horizontally fixedly mounted on the rotating sleeve. The clamp is fixed to the front end of the flipping arm. A mandrel is inserted inside the rotating sleeve, and the front end of the U-shaped frame is connected to both ends of the mandrel. The U-shaped frame is slidably mounted on the platform through a guide buffer assembly. The linear push-pull mechanism is used to drive the U-shaped frame to move laterally along the platform. When the U-shaped frame moves forward, the counterweight roller at the right end of the flipping block falls into the second V-shaped groove, causing the flipping arm to flip downward. When the U-shaped frame moves backward, the counterweight roller at the left end of the flipping block falls into the first V-shaped groove, causing the flipping arm to flip upward. The heating unit is located above the platform. The quenching tank is located below the platform.

2. The continuous feeding annealing device for drill bits according to claim 1, characterized in that, The guide buffer assembly includes a track, a slider, a base plate, inner and outer telescopic sleeves, and a spring. The track is set on both sides of the top of the platform. The base plate is slidably connected to the track through the slider. The inner and outer telescopic sleeves include an inner telescopic rod and an outer sleeve that are slidably sleeved together. The bottom of the outer sleeve is fixed to the base plate. The top of the inner telescopic rod is fixedly connected to the bottom of the U-shaped frame. The spring is fitted between the outer sleeve and the U-shaped frame.

3. The continuous feeding annealing device for drill bits according to claim 1, characterized in that, The linear push-pull mechanism includes a servo hydraulic cylinder, a support, and a hinge seat. The support is fixedly installed inside the conveyor frame. The cylinder end of the servo hydraulic cylinder is hinged to the support. The hinge seat is installed at the rear end of the U-shaped frame. The output end of the servo hydraulic cylinder is hinged to the hinge seat.

4. The continuous feeding annealing device for drill bits according to claim 1, characterized in that, The heating unit includes a heating coil, a stand, and a heating machine. The stand is fixed on the conveyor frame, the heating coil is installed on the top of the stand, and the heating coil is connected to the output end of the heating machine. The heating coil corresponds vertically to the first V-shaped groove; the quenching groove corresponds vertically to the second V-shaped groove.

5. The continuous feeding annealing device for drill bits according to claim 1, characterized in that, It also includes a sensor assembly, which includes position sensor one, position sensor two and position sensor three. Position sensor one is disposed on the heating unit, position sensor two is disposed on the inner right side wall of the second V-shaped groove, and position sensor three is disposed on the inner left side wall of the first V-shaped groove.

6. The continuous feeding annealing device for drill bits according to claim 1, characterized in that, It also includes a transition component and a receiving component. The transition component is located in front of the input conveyor belt and includes a drive motor and a roller frame. The roller frame is mounted on a bearing seat via a rotating shaft. The output end of the drive motor is connected to the rotating shaft to control the roller frame to rotate. The receiving component is located below the platform and includes a swing frame, a receiving guide groove, and a control hydraulic cylinder. The top of the swing frame is hinged to the platform, the receiving guide groove is installed at the bottom of the swing frame, and the control hydraulic cylinder is used to control the swing frame to swing.

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