A heat treatment device for PCB milling cutter production

Abstract

The present invention provides a heat treatment device for PCB milling cutter production, belonging to the technical field of heat treatment equipment. It is intended to address the technical problems of low automation and high labor intensity during salt bath heat treatment of existing PCB milling cutters. The device comprises several support frames, several salt baths, and a placement frame. The support frames are provided with two bearing seats, a drive frame is rotatably disposed between the two bearing seats, a drive mechanism is provided on the bearing seats, and two support rods are provided on the drive frame. Two tilting rods are fixed above the salt baths, and the tilting rods are provided with spacing mechanisms. A control box is provided on the first support frame, and timers are provided on the remaining support frames. After an operator places the PCB milling cutter in a designated position, the device automatically transfers the PCB milling cutter between various salt baths of varying temperatures, achieving automatic high-temperature salt bathing. This improves the automation level of the high-temperature salt bath process and reduces the operator's labor intensity.

Description

Technical Field

[0001] The invention belongs to the technical field of heat treatment equipment and relates to a heat treatment device for producing PCB milling cutters. Background Art

[0002] PCB milling cutters are tools used to create slots in circuit boards. These cutters are typically small-diameter cutters, and setting the correct slotting parameters is crucial. Too fast a slotting speed can overload the cutter and cause it to break, while too slow a slotting speed can reduce production efficiency. Because PCB thickness, copper thickness, and material structure vary among PCB manufacturers, PCB milling cutters must be tailored to the specific situation. Furthermore, high requirements are placed on the hardness and toughness of the PCB drill bit.

[0003] PCB milling cutters need to be heat treated during the production process to improve their hardness and toughness. Heat treatment is generally divided into two steps: first, a high-temperature salt bath is required, and then electromagnetic heating quenching is performed. During the salt bath process, the operator needs to repeatedly place the PCB milling cutter tied with wire into salt bath solutions of different temperatures, and the temperature of the salt bath solution increases in a step-by-step manner. The entire process requires frequent operator participation, a low degree of automation, and high labor intensity for operators.

[0004] Based on this, we designed a heat treatment device for PCB milling cutter production with a high degree of automation. Summary of the Invention

[0005] The purpose of the present invention is to address the above-mentioned problems in the existing technology and propose a heat treatment device for PCB milling cutter production. The technical problem to be solved by the device is: how to improve the degree of automation of PCB milling cutter salt bath heat treatment equipment, improve production efficiency, and reduce the labor intensity of operators.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A heat treatment device for producing PCB milling cutters comprises several support frames, several salt baths and a placement rack for placing PCB milling cutters, wherein the support frames and salt baths are alternately arranged, salt bath solutions of different temperatures are sequentially provided in the multiple salt baths, and circulating cooling water is provided in the last salt bath. Two bearing seats are provided on the support frames, and a drive frame is rotatably provided between the two bearing seats, and a drive mechanism for driving the drive frame to rotate is provided on the bearing seats. The drive frame is provided with two support rods for carrying the placement rack, two tilting rods are fixed above the salt baths, and the tilting rods are provided with spacing mechanisms, a control box is provided on the first support frame, and timers are provided on the remaining support frames.

[0008] The working principle of the present invention is as follows: when in use, the operator places the PCB milling cutter on the placement rack, and then hangs the placement rack on the support rod. Then the driving mechanism drives the driving rack to rotate half a circle from the top and drives the placement rack into the salt bath. At this time, the placement rack is hung on the two inclined rods at the corresponding position and moves to the other end along the inclined rod. Then the driving mechanism drives the driving rack to reset. After the previous driving mechanism is started, the driving mechanism at the next position will also be started after a delay period according to the time set by its corresponding delay device. Similarly, the placement rack can be moved to the next salt bath. Then the driving mechanism drives the corresponding driving rack to reset again. This is repeated to finally move the placement rack to the last salt bath for circulating water cooling, thereby realizing the salt bath heat treatment process. The immersion time of the PCB milling cutter in each salt bath can be set by setting the time of the delay device. The salt bath heat treatment process has a high degree of automation. The operator only needs to put in the placement rack, and the device can automatically complete the salt bath process according to the salt bath time set in advance.

[0009] The driving mechanism includes a driving motor, a connecting part between the driving frame and the bearing seat is a tubular structure, and a bearing is arranged between the driving frame and the bearing seat, the driving motor is fixed to one side end of the bearing seat, and an elastic reset component is provided on the other bearing seat, and a rotating ring is fixed on the output shaft of the driving motor, and a driving tooth is provided on the rotating ring. A sleeve is fixed to the side wall of the tubular structure of the driving frame close to the driving motor, and a driven block is slidingly arranged in the sleeve, a cylinder is fixed to the outer end of the driven block, and a ball is embedded in the end of the cylinder, and the ball is abutted against the inner wall of the bearing seat, a reset spring is sleeved on the cylinder, and the two ends of the reset spring are respectively abutted against the driven block and the inner wall of the bearing seat, and a groove is provided on the inner wall of the bearing seat.

[0010] When the gear train is in a reverse rotation, the gear train is moved back into the gear train, and the gear train is moved back into the gear train, and the gear train is moved back into the gear train, and the gear train is moved back into the gear train, and the gear train is moved back into the gear train, and the gear train is moved back into the gear train, and the gear train is moved back into the gear train, and the gear train is moved back into the gear train, and the gear train is moved back into the gear train, and the gear train is moved back into the gear train, and the gear train is moved back into the gear train, and the gear train is moved back into the gear train, and the gear train is moved

[0011] The elastic reset assembly includes a torsion spring and a damping extrusion block. The torsion spring is located inside the circular tubular structure of the driving frame, and a slot is provided on the side wall of the circular tubular structure of the driving frame. A fixed block is fixed to the side end of the support frame, and a socket is provided on the fixed block. One end of the torsion spring is located in the slot, and the other end is inserted in the socket. A vertical pole is fixed on the support frame, and a sliding rod is slidably provided on the vertical pole. The damping extrusion block is fixed to one end of the sliding rod, and a rubber pad is fixed on one side of the damping extrusion block, and the rubber pad is against the side wall of the driving frame. An extrusion spring is sleeved on the sliding rod, and both ends of the extrusion spring are respectively against the damping extrusion block and the vertical pole star.

[0012] With the above structure, when in use, after the driving tooth passes over the driven block, the elastic force of the torsion spring will drive the driving frame to reset, and when the driving frame is blocked by the placement frame, it can also stop resetting. During the resetting process of the driving frame, the extrusion spring will drive the damping extrusion block to press against the driving frame, thereby reducing the resetting speed of the driving frame, preventing the driving frame from hitting the operator, and reducing the safety hazards of the device.

[0013] The placement rack includes a transverse tube, on which two one-way rotating components are provided. A clip for hanging on a support rod is fixed to the side end of the one-way rotating component. A connecting tube is fixed below the transverse tube. A plurality of connecting rods are connected to the lower end of the connecting tube, and a placement tube is fixed to the lower end of the connecting rod. A plurality of placement holes for inserting PCB milling cutters are opened on the placement tube. An elliptical rod is provided on the inside of the placement tube, and a power component is provided at the upper end of the elliptical rod.

[0014] With the above structure, when in use, the operator inserts the PCB milling cutter that needs to be subjected to a high-temperature salt bath into the placement hole, and places one end of the PCB milling cutter against the surface of the elliptical rod. Then, the two clips can be hung on the two support rods so that the connecting tube is located between the two support rods. Then, the driving frame can drive the placement frame to move. After the transfer, when the two ends of the horizontal tube are placed on the inclined rod, the support rod continues to descend and disengage from the clip. At this time, the placement frame will move along the inclined rod. At this time, the connecting tube passes between the two support rods and will not hinder the movement.

[0015] The power assembly includes a rotating rod rotatably arranged inside the cross tube, and the rotating rod and the cross tube are connected by a bearing. Two rollers are fixed at both ends of the rotating rod, and the spacing between the two rollers is consistent with the spacing between the two inclined rods at corresponding positions. A transmission rod is rotatably arranged in the connecting tube, and the lower end of the transmission rod is fixedly connected to the elliptical rod, and the upper end of the transmission rod is connected to the rotating rod through a bevel gear pair.

[0016] With the above structure, when in use, when the placement rack moves to above the tilting rod, the two rollers just contact the tilting rod, and the two rollers will roll along the tilting rod to drive the placement rack to move. When the rollers roll along the tilting rod, the rotating rod drives the transmission rod to rotate through the bevel gear pair, and then drives the elliptical rod to rotate. When the elliptical rod rotates, it drives the PCB milling cutter inserted in the placement hole to move, so that the contact position of the PCB milling cutter and the placement cylinder changes, ensuring that the surface of the PCB milling cutter is in more uniform contact with the salt bath solution, thereby improving the salt bath effect.

[0017] The outer side of the roller is covered with a non-slip rubber ring, and the edge of the roller is fixed with an annular baffle.

[0018] With the above structure, when in use, when the roller rolls on the tilt rod, the annular baffle is located on the outer edge of the tilt rod, which can prevent the roller from deviating, and the anti-slip rubber ring can prevent slipping between the roller and the tilt rod, ensuring that the rotating rod can rotate.

[0019] The one-way rotation component includes a circular ring that is rotatably sleeved on the outside of the transverse tube, a clamp is fixed on the outside of the circular ring, two first magnetic blocks are fixed on both sides of the circular ring, two limit blocks are fixed on the outer surface of the transverse tube, and the two limit blocks are located on both sides of the circular ring, and two second magnetic blocks are also fixed on the outside of the transverse tube, the two second magnetic blocks are respectively located on both sides of the circular ring, the second magnetic block is located below the first magnetic block, and the same magnetic poles of the first magnetic block and the second magnetic block are opposite to each other.

[0020] With the above structure, when the driving frame lifts the card upward, the first magnetic block and the limit block counteract each other, and the card does not rotate upward, so the placement frame can be lifted by the card. When the placement frame is located on the tilting rod, a driving frame at the rear will squeeze the card downward during the resetting process. At this time, the ring rotates, and the first magnetic block and the second magnetic block approach each other. When the support rod moves to the bottom of the card, the repulsive force between the first magnetic block and the second magnetic block will drive the card to reset. At this time, the card is still located above the support rod, and the support rod can drive the card to move upward.

[0021] The spacing mechanism includes a stopper fixed at the lower end of the tilting rod, and the inner side wall of the tilting rod is rotatably connected to a plurality of swinging curved rods distributed at equal intervals, and the middle of the swinging curved rod is hinged to the tilting rod, and a counterweight rod is fixed to the end of the swinging curved rod close to the higher end of the tilting rod, and a plurality of resist blocks are fixed on the inner wall of the tilting rod, and the resist blocks are against the lower surface of the end of the swinging curved rod close to the counterweight rod.

[0022] With the above structure, when in use, when the roller rolls to the bottom along the tilted rod, the roller is blocked by the block and stops moving. At this time, the roller will squeeze one end of one of the swinging curved rods, causing the other end of the swinging curved rod and the counterweight rod to tilt upward. At this time, the next roller will be blocked by the tilted end of the swinging curved rod when rolling, and maintain a certain distance from the previous roller to prevent the PCB milling cutter from colliding. Similarly, the subsequent rollers will maintain a certain distance from the previous roller. Only when the front roller moves away, the rear roller can squeeze one end of the swinging curved rod and the counterweight rod downward and move forward a certain distance.

[0023] Compared with the existing technology, this heat treatment device for PCB milling cutter production has the following advantages:

[0024] 1. Through the driving mechanism, driving frame, salt bath, placement frame and delay device, after the operator places the PCB milling cutter in the specified position, the PCB milling cutter can be automatically transferred in salt baths of various temperatures. The salt bath time can be set to realize automatic high-temperature salt bath, which improves the automation degree of the high-temperature salt bath process, improves production efficiency and reduces the labor intensity of the operator.

[0025] 2. Through the driving mechanism, when the salt bath is full of placement racks, the feeding is stopped to prevent the placement racks from squeezing and colliding with each other. Through the spacing mechanism, the distance between the placement racks on the tilting rod is fixed to prevent the PCB milling cutters on the placement racks from rubbing against each other and being damaged, thereby improving the protection effect of the PCB milling cutters during the high-temperature salt bath process.

[0026] 3. The placement rack can fix and transfer the PCB milling cutter as a whole, and can drive the PCB milling cutter to move during the high-temperature salt bath process, so that the surface of the PCB milling cutter contacts the salt bath solution more evenly, thereby improving the effect of the high-temperature salt bath. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 It is a partial structural schematic diagram of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the placement rack in the present invention;

[0030] Figure 4 This invention Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0031] Figure 5 It is a structural schematic diagram of the one-way rotating component in the present invention;

[0032] Figure 6It is a structural diagram of the power assembly in the present invention;

[0033] Figure 7 It is a partial structural diagram of the partition mechanism in the present invention;

[0034] Figure 8 This is a schematic diagram of the split structure of the driving mechanism of the present invention;

[0035] Figure 9 It is a schematic cross-sectional structure diagram of the driving mechanism in the present invention;

[0036] Figure 10 It is a structural diagram of the elastic reset assembly in the present invention;

[0037] In the figure: 1. Support frame; 2. Salt bath; 3. Bearing seat; 4. Drive frame; 5. Drive mechanism; 501. Drive motor; 502. Rotating ring; 503. Drive gear; 504. Sleeve; 505. Follower block; 506. Cylinder; 507. Ball; 508. Return spring; 509. Groove; 510. Slot; 511. Fixed block; 512. Jack; 513. Torsion spring; 514. Vertical pole; 515. Sliding rod; 516. Damping extrusion block; 517. Extrusion spring; 6. Support rod; 7. Placement frame; 701. Horizontal tube; 702. Clamp; 703. Connecting tube; 704. Connecting rod; 705. Placement tube; 706. Placement hole; 707. Elliptical rod; 708. Rotating rod; 709. Roller; 710. Transmission rod; 711. Annular baffle; 712. Anti-slip rubber ring; 713. Circular ring; 714. First magnetic block; 715. Limit block; 716. Second magnetic block; 8. Tilt rod; 9. Spacer mechanism; 901. Swinging bending rod; 902. Stop block; 903. Stop block; 10. Control box; 11. Delay device. DETAILED DESCRIPTION

[0038] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0039] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0040] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this patent.

[0041] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0042] See also Figure 1-10 The present embodiment provides a heat treatment device for PCB milling cutter production, comprising a plurality of support frames 1, a plurality of salt baths 2 and a placement rack 7 for placing PCB milling cutters, the support frames 1 and the salt baths 2 being alternately distributed, salt bath solutions of different temperatures being sequentially arranged in the plurality of salt baths 2, and circulating cooling water being arranged in the last salt bath 2, two bearing seats 3 being arranged on the support frame 1, a driving frame 4 being rotatably arranged between the two bearing seats 3, and a driving mechanism 5 being provided on the bearing seat 3 for driving the driving frame 4 to rotate, two support rods 6 for carrying the placement rack 7 being provided on the driving frame 4, two tilting rods 8 being fixed above the salt bath 2, and a spacing mechanism 9 being provided on the tilting rod 8, a control box 10 being provided on the first support frame 1, and a delay device 11 being provided on the remaining support frames 1; when in use, the operator places the PCB milling cutter on the placement rack 7, then hangs the placement rack 7 on the support rod 6, and then the driving mechanism 5 drives the driving frame 4 rotates half a circle from the top and drives the placement rack 7 into the salt bath 2. At this time, the placement rack 7 is hung on the two tilting rods 8 at the corresponding position and moves to the other end along the tilting rods 8. Then the driving mechanism 5 drives the driving rack 4 to reset. After the previous driving mechanism 5 is started, the driving mechanism 5 at the next position will be started after a delay of a period of time according to the time set by its corresponding delay device 11. Similarly, the placement rack 7 can be moved to the next salt bath 2. Then the driving mechanism 5 drives the corresponding driving rack 4 to reset. This is repeated to finally move the placement rack 7 to the last salt bath 2 for circulating water cooling to realize the salt bath heat treatment process. The immersion time of the PCB milling cutter in each salt bath 2 can be set by the time setting of the delay device 11. The salt bath heat treatment process has a high degree of automation. The operator only needs to put in the placement rack 7, and the device can automatically complete the salt bath process according to the salt bath time set in advance.

[0043] The driving mechanism 5 includes a driving motor 501, a connecting portion between the driving frame 4 and the bearing seat 3 is a circular tubular structure, and a bearing is provided between the driving frame 4 and the bearing seat 3, the driving motor 501 is fixed to the side end of one of the bearing seats 3, and an elastic reset component is provided on the other bearing seat 3, and a rotating ring 502 is fixed on the output shaft of the driving motor 501, and a driving tooth 503 is provided on the rotating ring 502, and a sleeve 504 is fixed to the side wall of the circular tubular structure of the driving frame 4 close to the driving motor 501, and the sleeve A driven block 505 is slidably provided in the cylinder 504, a cylinder 506 is fixed to the outer end of the driven block 505, and a ball 507 is embedded in the end of the cylinder 506, and the ball 507 is against the inner wall of the bearing seat 3, a return spring 508 is sleeved on the cylinder 506, and the two ends of the return spring 508 are respectively against the driven block 505 and the inner wall of the bearing seat 3, and a groove 509 is provided on the inner wall of the bearing seat 3; when in use, the driving motor 501 drives the rotating ring 502 to rotate, and the rotating ring 502 is driven by the driving motor 501. When the driving rack 4 is reset, the driving rack 4 is blocked by the driving teeth 503, and the operator can continue to add the placing rack 7. On the contrary, when the elastic reset component drives the driving rack 4 to reset successfully, the driving rack 4 is blocked by the driving teeth 503 that stops after rotating one circle, and the operator can continue to add the placing rack 7.

[0044] The elastic reset assembly includes a torsion spring 513 and a damping extrusion block 516. The torsion spring 513 is located inside the circular tubular structure of the driving frame 4, and a card slot 510 is provided on the side wall of the circular tubular structure of the driving frame 4. A fixing block 511 is fixed to the side end of the support frame 1, and a socket 512 is provided on the fixing block 511. One end of the torsion spring 513 is located in the card slot 510, and the other end is inserted in the socket 512. A vertical rod 514 is fixed to the support frame 1, and a sliding rod 515 is slidably provided on the vertical rod 514. The damping extrusion block 516 is fixed to one end of the sliding rod 515. A rubber pad is fixed to one side of the damping extrusion block 516, and the rubber pad is fixed to the side end of the damping extrusion block 516. The rubber pad is against the side wall of the driving frame 4, and an extrusion spring 517 is provided on the sliding rod 515, and the two ends of the extrusion spring 517 are respectively against the damping extrusion block 516 and the vertical rod 514; when in use, after the driving tooth 503 passes over the driven block 505, the elastic force of the torsion spring 513 will drive the driving frame 4 to reset, and when the driving frame 4 is blocked by the placement frame 7, it can also stop resetting. During the resetting process of the driving frame 4, the extrusion spring 517 will drive the damping extrusion block 516 to press against the driving frame 4, thereby reducing the resetting speed of the driving frame 4, preventing the driving frame 4 from hitting the operator, and reducing the safety hazards of the device.

[0045] The placement rack 7 includes a transverse tube 701, on which two one-way rotating components are provided. The side ends of the one-way rotating components are fixed with a clamp 702 for hanging on the support rod 6. A connecting tube 703 is fixed below the transverse tube 701. The lower end of the connecting tube 703 is connected to a number of connecting rods 704, and the lower end of the connecting rod 704 is fixed with a placement cylinder 705. The placement cylinder 705 is provided with a number of placement holes 706 for inserting PCB milling cutters. An elliptical rod 707 is provided inside the placement cylinder 705, and a power component is provided on the upper end of the elliptical rod 707. When in use, the operator needs The PCB milling cutter to be subjected to a high-temperature salt bath is inserted into the placement hole 706, and one end of the PCB milling cutter is placed against the surface of the elliptical rod 707. Then the two clamps 702 can be hung on the two support rods 6 so that the connecting pipe 703 is located between the two support rods 6. Then the driving frame 4 can drive the placement frame 7 to move. After the transfer, when the two ends of the horizontal tube 701 are placed on the tilting rod 8, the support rod 6 continues to descend and disengage from the clamp 702. At this time, the placement frame 7 will move along the tilting rod 8. At this time, the connecting pipe 703 passes between the two support rods 6 and will not cause any obstruction to the movement.

[0046] The power assembly includes a rotating rod 708 rotatably arranged inside the transverse tube 701, and the rotating rod 708 is connected to the transverse tube 701 through a bearing, two rollers 709 are fixed at both ends of the rotating rod 708, and the spacing between the two rollers 709 is consistent with the spacing between the two tilting rods 8 at the corresponding positions, a transmission rod 710 is rotatably arranged in the connecting tube 703, and the lower end of the transmission rod 710 is fixedly connected to the elliptical rod 707, and the upper end of the transmission rod 710 is connected to the rotating rod 708 through a bevel gear pair; when in use, when the placement rack 7 moves to the tilting rod 8, the two rollers 709 just come into contact with the tilting rod 8, and the two rollers 709 will roll along the tilting rod 8 to drive the placement rack 7 to move. When the rollers 709 roll along the tilting rod 8, the rotating rod 708 drives the transmission rod 710 to rotate through the bevel gear pair, and then drives the elliptical rod 707 to rotate. When the elliptical rod 707 rotates, it will drive the PCB milling cutter inserted in the placement hole 706 to move, so that the contact position of the PCB milling cutter and the placement cylinder 705 changes, ensuring that the surface of the PCB milling cutter contacts the salt bath solution more evenly, thereby improving the salt bath effect.

[0047] The outer side of the roller 709 is provided with an anti-slip rubber ring 712, and an annular baffle 711 is fixed to the edge of the roller 709; when in use, when the roller 709 is located on the tilting rod 8 and rolls, the annular baffle 711 is located on the outer edge of the tilting rod 8, which can prevent the roller 709 from deviating, and the anti-slip rubber ring 712 can prevent the roller 709 from slipping with the tilting rod 8, ensuring that the rotating rod 708 can rotate.

[0048] The one-way rotating assembly includes a ring 713 rotatably sleeved on the outside of the transverse tube 701, a clamping member 702 is fixed on the outside of the ring 713, two first magnetic blocks 714 are fixed on both sides of the ring 713, two limit blocks 715 are fixed on the outer surface of the transverse tube 701, and the two limit blocks 715 are located on both sides of the ring 713, and two second magnetic blocks 716 are also fixed on the outside of the transverse tube 701, the two second magnetic blocks 716 are respectively located on both sides of the ring 713, the second magnetic block 716 is located below the first magnetic block 714, and the first magnetic block 714 and the second magnetic block 716 have the same magnetic poles facing each other; when the driving frame 4 lifts the clamping member 702 upward, When the first magnetic block 714 and the limit block 715 are in contact with each other, the clamping member 702 will not rotate upward, and the placement rack 7 can be lifted by the clamping member 702. When the placement rack 7 is located on the tilt rod 8, a driving rack 4 at the rear will squeeze the clamping member 702 downward during the resetting process. At this time, the ring 713 rotates, and the first magnetic block 714 and the second magnetic block 716 approach each other. When the support rod 6 moves to the bottom of the clamping member 702, the repulsive force between the first magnetic block 714 and the second magnetic block 716 will drive the clamping member 702 to reset. At this time, the clamping member 702 is still located above the support rod 6, and the support rod 6 can drive the clamping member 702 to move upward.

[0049] The spacing mechanism 9 includes a stopper 903 fixed to the lower end of the tilting rod 8, and the inner side wall of the tilting rod 8 is rotatably connected to a plurality of equally spaced swinging curved rods 901, and the middle of the swinging curved rod 901 is hinged to the tilting rod 8, and a counterweight rod is fixed to the end of the swinging curved rod 901 close to the higher end of the tilting rod 8, and a plurality of abutting blocks 902 are fixed on the inner wall of the tilting rod 8, and the abutting blocks 902 abut against the lower surface of the end of the swinging curved rod 901 close to the counterweight rod; when in use, when the roller 709 rolls to the bottom along the tilting rod 8, the roller 709 is blocked by the stopper 903 and stops moving. At this time, the roller 709 will squeeze one end of one of the swinging curved rods 901, causing the other end of the swinging curved rod 901 and the counterweight rod to tilt upward. At this time, the next roller 709 will be blocked by the tilted end of the swinging curved rod 901 when rolling, and maintain a certain distance between itself and the previous roller 709 to prevent the PCB milling cutter from colliding. Similarly, the subsequent rollers 709 will maintain a certain distance from the previous roller 709. Only when the front roller 709 moves away can the rear roller 709 squeeze one end of the swinging curved rod 901 and the counterweight rod downward and move forward a certain distance.

[0050] The above-mentioned fixing methods are the most commonly used fixing connection methods in this field, such as welding, bolt connection, etc.; the above-mentioned electrical components such as the drive motor 501, the control box 10 and the delay device 11, etc., are all existing technology products and can be directly purchased and used in the market. The specific principles will not be repeated here.

[0051] Working principle of the present invention:

[0052] During use, the operator inserts the PCB milling cutter into the placement hole 706 and places one end of the PCB milling cutter against the surface of the elliptical rod 707. Then, the two clips 702 can be hung on the two support rods 6 so that the connecting tube 703 is located between the two support rods 6. Then, the driving motor 501 drives the rotating ring 502 to rotate. The rotating ring 502 squeezes the driven block 505 through the driving tooth 503, thereby driving the driving frame 4 to rotate. At this time, the ball 507 rolls along the inner wall of the bearing seat 3, and the placement frame 7 moves to the next salt bath 2 as the driving frame 4 rotates. At this time, the roller 709 is located on the two inclined rods 8 at the corresponding position and rolls to the other end along the inclined rod 8 and is blocked by the block 903. At the same time, when the driving tooth 503 passes over the driven block 505, the elastic force of the torsion spring 513 drives the driving frame 4 to reset. After the previous driving mechanism 5 is started, the driving mechanism 5 at the next position will also be started after a delay of a period of time according to the time set by its corresponding delay device 11. Similarly, When the cam 714 is in the process of being reset, the first and second magnetic blocks 714 and 716 of the cam 716 are moved to the bottom of the cam 702. When the cam 714 is in the process of being reset, the first and second magnetic blocks 714 and 716 of the cam 716 are moved to the bottom of the cam 702. When the cam 714 is in the process of being reset, the first and second magnetic blocks 714 and 716 of the cam 716 are moved to the bottom of the cam 702. When the cam 714 is in the process of being reset, the first and second magnetic blocks 714 and 716 of the cam 716 are moved to the bottom of the cam 702. When the cam 714 is in the process of being reset, the first and second magnetic blocks 714 and 716 of the cam 716 are moved to the bottom of the cam 702.

[0053] When the cam 709 is in the process of being reset, the cam 709 is in the process of being reset, and ...

[0054] The above describes in detail the preferred embodiments of this patent, but this patent is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A heat treatment device for producing PCB milling cutters, comprising a plurality of support frames (1), a plurality of salt baths (2) and a placement frame (7) for placing PCB milling cutters, characterized in that: The support frame (1) and the salt bath pool (2) are arranged alternately, and salt bath solutions of different temperatures are sequentially arranged in the multiple salt bath pools (2). Circulating cooling water is arranged in the last salt bath pool (2). Two bearing seats (3) are arranged on the support frame (1), and a driving frame (4) is rotatably arranged between the two bearing seats (3). A driving mechanism (5) for driving the driving frame (4) to rotate is provided on the bearing seat (3). Two support rods (6) for carrying the placement frame (7) are provided on the driving frame (4). Two tilting rods (8) are fixed above the salt bath pool (2), and a spacing mechanism (9) is provided on the tilting rod (8). A control box (10) is provided on the first support frame (1), and time delay devices (11) are provided on the remaining support frames (1). The driving mechanism (5) includes a driving motor (501), a connecting portion between the driving frame (4) and the bearing seat (3) is a circular tubular structure, and a bearing is provided between the driving frame (4) and the bearing seat (3), the driving motor (501) is fixed to a side end of one of the bearing seats (3), the other bearing seat (3) is provided with an elastic reset component, and a rotating ring (502) is fixed to the output shaft of the driving motor (501), and the rotating ring (502) is provided with a driving tooth (503), and the driving frame (4) is close to the circular end of the driving motor (501). A sleeve (504) is fixed to the side wall of the tubular structure, a driven block (505) is slidably arranged in the sleeve (504), a cylinder (506) is fixed to the outer end of the driven block (505), and a ball (507) is embedded in the end of the cylinder (506), the ball (507) is against the inner wall of the bearing seat (3), a return spring (508) is sleeved on the cylinder (506), and the two ends of the return spring (508) are respectively against the driven block (505) and the inner wall of the bearing seat (3), and a groove (509) is provided on the inner wall of the bearing seat (3); The placement rack (7) comprises a transverse tube (701), two one-way rotating components are provided on the transverse tube (701), a clamp (702) for hanging on the support rod (6) is fixed to the side end of the one-way rotating component, a connecting tube (703) is fixed below the transverse tube (701), the lower end of the connecting tube (703) is connected to a plurality of connecting rods (704), and a placement tube (705) is fixed to the lower end of the connecting rod (704), the placement tube (705) is provided with a plurality of placement holes (706) for inserting PCB milling cutters, an elliptical rod (707) is provided inside the placement tube (705), and a power assembly is provided at the upper end of the elliptical rod (707).

2. A heat treatment device for producing PCB milling cutters according to claim 1, characterized in that: The elastic reset assembly includes a torsion spring (513) and a damping extrusion block (516), the torsion spring (513) is located inside the circular tubular structure of the driving frame (4), and a slot (510) is provided on the side wall of the circular tubular structure of the driving frame (4), a fixing block (511) is fixed to the side end of the support frame (1), and a socket (512) is provided on the fixing block (511), one end of the torsion spring (513) is located in the slot (510), and the other end is inserted into the socket (512). A vertical rod (514) is fixed on the support frame (1), a slide bar (515) is slidably provided on the vertical rod (514), a damping extrusion block (516) is fixed to one end of the slide bar (515), a rubber pad is fixed to one side of the damping extrusion block (516), and the rubber pad is against the side wall of the driving frame (4), an extrusion spring (517) is sleeved on the slide bar (515), and two ends of the extrusion spring (517) are respectively against the damping extrusion block (516) and the vertical rod (514).

3. A heat treatment device for producing PCB milling cutters according to claim 1, characterized in that: The power assembly includes a rotating rod (708) rotatably arranged inside the transverse tube (701), and the rotating rod (708) and the transverse tube (701) are connected via a bearing. Two rollers (709) are fixed at both ends of the rotating rod (708), and the spacing between the two rollers (709) is consistent with the spacing between the two tilting rods (8) at corresponding positions. A transmission rod (710) is rotatably arranged in the connecting tube (703), and the lower end of the transmission rod (710) is fixedly connected to the elliptical rod (707), and the upper end of the transmission rod (710) is connected to the rotating rod (708) via a bevel gear pair.

4. A heat treatment device for producing PCB milling cutters according to claim 3, characterized in that: The outer side of the roller (709) is provided with an anti-slip rubber ring (712), and an annular baffle (711) is fixed to the edge of the roller (709).

5. The heat treatment device for producing PCB milling cutters according to claim 1, characterized in that: The one-way rotation component comprises a circular ring (713) rotatably sleeved on the outside of the transverse tube (701), a clamping member (702) fixed on the outside of the circular ring (713), two first magnetic blocks (714) fixed on both sides of the circular ring (713), two limiting blocks (715) fixed on the outer surface of the transverse tube (701), and the two limiting blocks (715) are located on both sides of the circular ring (713), and two second magnetic blocks (716) are also fixed on the outside of the transverse tube (701), the two second magnetic blocks (716) are respectively located on both sides of the circular ring (713), the second magnetic block (716) is located below the first magnetic block (714), and the first magnetic block (714) and the second magnetic block (716) have the same magnetic poles facing each other.

6. A heat treatment device for producing PCB milling cutters according to claim 1, characterized in that: The spacing mechanism (9) includes a stopper (903) fixed to the lower end of the tilting rod (8), and the inner side wall of the tilting rod (8) is rotatably connected to a plurality of equally spaced swinging curved rods (901), and the middle of the swinging curved rod (901) is hinged to the tilting rod (8), and a counterweight rod is fixed to one end of the swinging curved rod (901) close to the higher end of the tilting rod (8), and a plurality of abutting blocks (902) are fixed on the inner wall of the tilting rod (8), and the abutting blocks (902) abut against the lower surface of one end of the swinging curved rod (901) close to the counterweight rod.

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