A shift fork workpiece forging heat treatment system

Abstract

The present invention belongs to the technical field of metal heat treatment, and specifically is a shift fork workpiece forging heat treatment system, comprising a quenching unit and a tempering unit, and the quenching unit is composed of quenching equipment, which is divided into a quenching device, a transfer device and a cooling device, and the transfer device is used to transfer the shift fork between the quenching device and the cooling device; when the driving shaft drives the rotating rod to rotate, the rotating rod drives the shift fork to rotate through the placement rack; on the one hand, before heating, the placement rack drives the rotation of the shift fork to throw away impurities on the shift fork, and cooperates with the jet blowing of the air cooling box to improve the cleaning efficiency of the shift fork before heating and improve the heat treatment efficiency; on the other hand, when cooling, the driving shaft also drives the rotating rod to rotate in water or oil, and the placement rack drives the shift fork to rotate in water, stirring the water in the water quenching pool in the quenching pool, so that the overall temperature distribution of the water in the water quenching pool in the quenching pool is uniform, avoiding affecting the quenching effect of the shift fork.

Description

Technical Field

[0001] The invention belongs to the technical field of metal heat treatment, in particular to a shift fork workpiece forging heat treatment system. Background Art

[0002] The shift fork is a common component in mechanical transmission systems and is widely used in various automobiles, engineering machinery, ships, agricultural machinery and other fields. The main processes of shift fork machining include: forging, heat treatment, turning, milling, grinding, automotive, drilling, tapping, etc.; the heat treatment of the shift fork is mainly to improve its hardness and strength while reducing its deformation. Common heat treatment methods include quenching, tempering, normalizing and passivation. Among them, quenching is a common method to improve the hardness and strength of the shift fork. It is to heat the workpiece to a critical temperature Ac3 or above Ac1, keep it warm for a period of time to make it fully or partially austenitized, and then cool it to below Ms at a cooling rate greater than the critical cooling rate for a heat treatment process of martensitic transformation, but it will cause deformation and embrittlement of the shift fork. Therefore, after quenching, tempering treatment is required to reduce the brittleness of the shift fork;

[0003] The following problems may be encountered during the heat treatment of the fork:

[0004] 1. Under high temperature, the surface of the fork will react with oxygen in the air to form an oxide layer; too much oxide layer will hinder the contact between the fork and the quenching liquid, affecting the quenching effect of the fork; moreover, the oxide scale mixed in the quenching liquid accumulates more with the increase of processing volume, and the presence of oxide scale will affect the cooling effect of the quenching oil, resulting in insufficient reduction of the surface temperature of the parts to the required temperature, thereby causing a decrease in hardness, and the oxide scale will promote the production of harmful components in the quenching oil, such as acids and hydrocarbons, which will corrode the surface of the parts and cause cracks and other problems;

[0005] 2. When the fork is heated to a high temperature and cooled, a large amount of smoke is generated after the high-temperature fork contacts the quenching liquid. The smoke is sticky and easily sticks to the surface of other forks, resulting in different quenching effects of forks in the same batch of processes, affecting the overall quenching effect. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a shift fork workpiece forging heat treatment system.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the present invention proposes a shift fork workpiece forging heat treatment system, including a quenching device, a transfer device and a cooling device;

[0008] A quenching tank, wherein the quenching tank is installed in the cooling device and the quenching tank is located on one side of the quenching device; filter boxes are installed at both ends of the quenching tank, and the sides of the filter boxes close to each other are respectively provided with an outlet and an inlet, and the outlet is located above the inlet; a filter is provided in the filter box, and the filter is used to filter the quenching liquid in the quenching tank;

[0009] An air cooling box, the air cooling box is arranged between two filter boxes, and a sealing door is slidably installed on the top of the air cooling box; an air supply device is arranged on one side of the quenching pool, and the air supply device conveys inert gas to the air cooling box; driving shafts are evenly arranged in the quenching pool, and a driving device arranged at the bottom of the quenching pool is connected and drives the driving shaft, and the driving shafts are evenly distributed at the bottom of the air cooling box and the bottom of the quenching pools on both sides of the air cooling box; a clamping block is arranged on the top of the driving shaft, and a rotating rod is arranged on the top of the driving shaft, and a clamping groove opened at the bottom of the rotating rod cooperates with the clamping block; a placing rack is evenly arranged on the rotating rod, and a workpiece is placed on the placing rack;

[0010] The transmission shaft is sleeved at the bottom of the drive shaft, and a spring is provided between the transmission shaft and the drive shaft. The drive shaft is lifted and lowered inside the transmission shaft, and the bottom of the transmission shaft is connected to the driving device; when the drive shaft is not squeezed, the top of the drive shaft is above the liquid surface.

[0011] Preferably, the placement racks are evenly provided with placement slots, the placement slots on adjacent placement racks are staggered, and screws are symmetrically provided on the inner walls of the placement slots on both sides, and the screws are threadedly connected to the inner walls of the placement slots; one end of the screw is rotatably connected to a fixing plate, two symmetrical fixing plates and the screw form a group, and multiple groups are provided in the placement slots; depressions are evenly provided on the opposite side walls of the fixing plates, and the ends of the shift forks are located in the depressions, and the two symmetrical fixing plates are close to each other, and the shift forks are fixed in the placement slots through the depressions;

[0012] The driving shaft and the rotating rod are both hollow structures, and a sealing cover is slidably connected to the top of the driving shaft through a spring, and the driving shaft is connected to the air supply device; a push rod is fixedly connected to the bottom axial position of the rotating rod, and the bottom of the push rod contacts the sealing cover; when the rotating rod is connected and merged with the driving shaft, the push rod pushes the sealing cover downward, and the interior of the driving shaft and the rotating rod are connected to each other; the bottom of the arc-shaped placement rack is evenly provided with blowing holes, and the blowing holes are located between adjacent placement slots, and the blowing holes are arranged in a direction away from the rotating rod.

[0013] Preferably, a No. 1 filter is provided between the sealing cover and the inner wall of the driving shaft; when the sealing cover is squeezed into the driving shaft, the No. 1 filter is pulled and unfolded.

[0014] Preferably, both sides of the air cooling box are curved surfaces, and the side of the filter box close to the air cooling box is a curved surface, and one side of the air cooling box, one side of the filter box and the inner wall of the quenching pool form a circle; a No. 1 brush rod and a No. 2 brush rod are respectively provided at the bottom of the sealing door, and a No. 1 cleaning brush and a No. 2 cleaning brush are respectively provided on the No. 1 brush rod and the No. 2 brush rod, the No. 1 brush rod is located in the air cooling box, and the No. 2 brush rod is close to the curved surfaces on both sides of the air cooling box, and the No. 1 cleaning brush and the No. 2 cleaning brush are both located between adjacent placement racks.

[0015] Preferably, a storage cavity is provided in the inner wall of the air cooling box, and the cleaning solvent and gas are stored in the storage cavity; nozzles are evenly provided on the No. 1 brush rod, and the nozzles are connected to the storage cavity.

[0016] Preferably, an arc-shaped groove is provided in the No. 2 brush rod, and an arc-shaped rod is slidably connected in the arc-shaped groove through a spring; comb teeth are respectively provided on the top and bottom of the arc-shaped rod, and the comb teeth are located at one end of the arc-shaped rod, and the comb teeth are located between adjacent placement racks; a shift block is hingedly connected to one end of the comb teeth through a torsion spring, and the shift block contacts the arc-shaped surface of the bottom of the placement rack.

[0017] Preferably, hooks are evenly arranged at the bottom of the comb teeth, and the hooks are bent toward the arc groove; the side where adjacent hooks are close to each other is an inclined surface, and the bottom surface of the comb teeth located between adjacent hooks is an inclined surface, and every two adjacent hook inclined surfaces and comb tooth inclined surfaces form a channel for the No. 2 cleaning brush to pass through, the diameter of one end of the channel is larger than the diameter of the other end, and the end of the channel with a larger diameter is close to the arc groove.

[0018] Preferably, a sleeve is provided on the top of the No. 2 brush rod, and a clamping block is slidably connected to the sleeve through a spring, and the No. 2 brush rod is clamped with the clamping block; the sleeve is fixedly connected to the bottom of the sealing door; a swivel is provided on the transmission shaft, and the swivel and the transmission shaft are arranged to rotate in one direction, a linkage rod is provided on the outer ring surface of the swivel, and the bottom of the No. 2 brush rod is slidably connected to the top of the linkage rod through a spring.

[0019] Preferably, drainage plates are evenly arranged on the top of the quenching pool, and one end of the drainage plate extends into the quenching pool; a No. 2 filter is arranged on the end of the drainage plate away from the quenching pool.

[0020] Preferably, filter No. 3 is evenly arranged on the guide plate, and the filter No. 3 is arranged at an angle.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. A shift fork workpiece forging and heat treatment system described in the present invention, when the drive shaft and the rotating rod are connected through the cooperation of the card slot and the card block, the drive device drives the drive shaft to rotate through the transmission shaft, the drive shaft drives the rotating rod to rotate, and the rotating rod drives the shift fork to rotate through the placement rack; on the one hand, before heating, the placement rack drives the rotation of the shift fork to throw away impurities on the shift fork, and cooperates with the jet blowing of the air cooling box to improve the cleaning efficiency of the shift fork before heating and improve the heat treatment efficiency; on the other hand, when cooling, the drive shaft also drives the rotating rod to rotate in water or oil, and the placement rack drives the shift fork to rotate in water, stirring the water in the water quenching pool in the quenching pool, so that the overall temperature of the water in the water quenching pool in the quenching pool is evenly distributed, avoiding affecting the quenching effect of the shift fork.

[0023] 2. In the shift fork workpiece forging heat treatment system described in the present invention, after a long period of quenching treatment, the impurities in the quenching liquid gradually increase. The staff starts the filter, sucks the quenching liquid from the inlet close to the bottom of the quenching pool, and sprays the quenching liquid from the outlet. During the process of quenching liquid suction and flow, the impurities precipitated at the bottom of the quenching pool are carried away and enter the filter through the inlet, so as to achieve the purpose of using the quenching liquid to flush and remove the impurities at the bottom of the quenching pool, reduce the residual impurities in the quenching pool, improve the cleanliness of the quenching pool, and avoid the quenching liquid after filtration from being contaminated by excessive residual impurities, thereby improving the heat treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 is a stereogram of the present invention;

[0026] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the interior of the air-cooled box;

[0028] Figure 4 It is a schematic diagram of the connection status of the No. 2 brush rod and the linkage rod;

[0029] Figure 5 It is a schematic diagram of the arc-shaped part and the blowing hole at the bottom of the placement rack;

[0030] Figure 6 It is a schematic diagram of the placement slot;

[0031] Figure 7 This is a state diagram of cleaning the No. 2 cleaning brush by driving the comb teeth through the dial block;

[0032] Figure 8 This is a state diagram of the cleaning brush No. 1 cleaning rack;

[0033] Fig. 9This is a partial enlarged picture of the No. 1 cleaning brush cleaning the placement rack;

[0034] Fig.10 is a schematic diagram of the drainage plate.

[0035] In the figure: quenching pool 1, filter box 11, outlet 12, inlet 13, filter 14, air cooling box 2, sealing door 21, air supply device 22, drive shaft 23, drive device 24, block 25, rotating rod 26, slot 27, placement rack 28, transmission shaft 29, placement slot 3, screw 31, fixing plate 32, recess 33, sealing cover 34, push rod 35, blowing hole 36, No. 1 filter 37, No. 1 brush rod 4, No. 2 brush rod 41, No. 1 cleaning brush 42, No. 2 cleaning brush 43, storage chamber 44, nozzle 45, arc groove 5, arc rod 51, comb teeth 52, shift block 53, hook 54, sleeve 6, clamp block 61, swivel 62, linkage rod 63, guide plate 64, No. 2 filter 65, No. 3 filter 66. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1:

[0038] A shift fork workpiece forging heat treatment system, as shown in the accompanying drawings of the specification Figure 1-Figure 10 As shown, it includes a quenching device, a transfer device and a cooling device. The transfer device is used to transfer the shift fork between the quenching device and the cooling device; the transfer device uses a mechanical arm or a crane to complete the transfer work; the quenching device uses a quenching furnace to heat and keep the shift fork warm; the cooling device is used to cool the shift fork;

[0039] A quenching tank 1 is installed in the cooling device, and the quenching tank 1 is located on one side of the quenching device; filter boxes 11 are installed at both ends of the quenching tank 1, and the sides of the filter boxes 11 close to each other are respectively provided with an outlet 12 and an inlet 13, and the outlet 12 is located above the inlet 13; a filter 14 is provided in the filter box 11, and the filter 14 is used to filter the quenching liquid in the quenching tank 1;

[0040] Air cooling box 2, the air cooling box 2 is arranged between two filter boxes 11, and a sealing door 21 is slidably installed on the top of the air cooling box 2; an air supply device 22 is arranged on one side of the quenching pool 1, and the air supply device 22 conveys inert gas to the air cooling box 2; driving shafts 23 are evenly arranged in the quenching pool 1, and a driving device 24 arranged at the bottom of the quenching pool 1 is connected and driven with the driving shaft 23, and the driving shaft 23 is evenly distributed at the bottom of the air cooling box 2 and the bottom of the quenching pool 1 on both sides of the air cooling box 2; a clamping block 25 is arranged on the top of the driving shaft 23, and a rotating rod 26 is arranged on the top of the driving shaft 23, and a clamping groove 27 opened at the bottom of the rotating rod 26 cooperates with the clamping block 25; a placing rack 28 is evenly arranged on the rotating rod 26, and a workpiece is placed on the placing rack 28;

[0041] Transmission shaft 29, a transmission shaft 29 is sleeved at the bottom of the drive shaft 23, and a spring is arranged between the transmission shaft 29 and the drive shaft 23, the drive shaft 23 is lifted and lowered inside the transmission shaft 29, and the bottom of the transmission shaft 29 is connected to the drive device 24; when the drive shaft 23 is not squeezed, the top of the drive shaft 23 is above the liquid surface;

[0042] The filter 14 is a conventional device for filtering quenching liquid, and the filter 14 sucks the quenching liquid from the inlet 13 and sprays the quenching liquid from the outlet 12; the interior of the quenching pool 1 is divided into two parts by the air cooling box 2, which are used to store two different quenching liquids, such as a water quenching pool and an oil quenching pool. When the fork needs to be cooled, it is first quenched in water and cooled to about 250°C. The rapid cooling of the fork can avoid the decomposition of the internal austenite, and then it is quickly transferred to the oil for cooling, that is, the transfer to a medium with weaker cooling capacity can effectively reduce the internal stress of the fork and reduce the possibility of deformation and cracking of the workpiece; the quenching liquid in the quenching pool 1 is replenished by the staff, and when the temperature of the quenching liquid in the quenching pool 1 is too high, the temperature of the quenching pool 1 can also be adjusted by adding cooling quenching liquid; the sealing door 21 uses a conventional The type of regulation opposite sliding opening; the air supply device 22 selects a conventional device for providing hot air delivery, and the air supply device 22 can deliver inert gas with heat into the quenching pool 1, so that most of the area around the fork in the high temperature state is inert gas, reducing the effect of contact with oxygen to form oxide scale; the driving device 24 drives the driving shaft 23 to rotate in a conventional driving manner, for example, a conventional motor with forward and reverse rotation functions, that is, a servo motor, and the output end of the motor is connected to the driving shaft 23 by a conventional transmission belt or belt, so that the driving device 24 drives the driving shaft 23 to rotate; there are three driving shafts 23, the first one is located in the water quenching pool in the quenching pool 1, the second one is located in the air cooling box 2, and the third one is located in the oil quenching pool in the quenching pool 1.

[0043] Specific working process: before heating, the rotating rod 26, the placement rack 28 and the shift fork installed on the placement rack 28 are located in the air-cooled box 2, and the sealed door 21 is in an open state; while the block 25 at the top of the driving shaft 23 extends into the slot 27 at the bottom of the rotating rod 26, the weight of the rotating rod 26, the placement rack 28 and the shift fork squeeze the driving shaft 23 downward, and the driving shaft 23 retracts into the transmission shaft 29; the air supply device 22 supplies air into the air-cooled box 2, and overflows from the sealed door 21. During the gas flow, the impurities on the surface of the shift fork are blown away, thereby improving the cleanliness of the shift fork before heating, avoiding dust and other impurities from hindering heat transfer, resulting in uneven heat treatment temperature, and thus improving the treatment effect of the heat treatment system on the shift fork; then, the transfer device clamps and fixes the top of the rotating rod 26, and puts it together with the placement rack 28 and the shift fork into the quenching furnace for heating;

[0044] During cooling, different treatments are performed according to the heat treatment requirements of the fork, for example:

[0045] The first method is to directly place the shift fork into the water quenching tank in the quenching tank 1 through the transfer device, which has a faster cooling speed than oil quenching to achieve the desired properties of the shift fork;

[0046] The second method is to directly place the shift fork into the oil quenching pool in the quenching pool 1 through the transfer device, which has a slower cooling rate than water quenching to achieve the shift fork with the desired properties;

[0047] The third method is to first quench the fork into water for cooling. Rapid cooling can prevent the internal austenite from decomposing. Then the fork is quickly transferred into oil for cooling. That is, the transfer into a medium with weaker cooling capacity can effectively reduce the internal stress of the fork and reduce the possibility of deformation and cracking of the workpiece. In addition, the interval between the water quenching pool and the oil quenching pool in the quenching pool 1 is small, which can complete the rapid transfer work in a short time, improve the quenching effect, and thus improve the heat treatment effect.

[0048] In the fourth method, the shift fork is first quenched in water for cooling, and after cooling to the set temperature, it is placed in the air cooling box 2 for gas cooling to achieve the desired properties of the shift fork; and the air cooling box 2 uses the air supply device 22 to continuously supply inert gas to the shift fork, and cooperates with the sealing door 21 to close after the shift fork enters the air cooling box 2, so as to provide a stable atmosphere environment for the cooling of the shift fork, avoid unnecessary gas reaction and the invasion of impurities, improve the cooling effect, thereby improving the quenching effect, and then improve the heat treatment effect; and, during the gas cooling process, it will be affected by climatic and environmental factors. Too fast a cooling speed may cause defects such as cracks and deformations in the metal, while too slow a cooling speed may cause uneven metal structure and reduce the performance; therefore, by controlling the temperature of the inert gas delivered by the air supply device 22, the cooling time of the shift fork is controlled, ensuring that the shift fork passes through an appropriate cooling speed to improve the heat treatment effect;

[0049] Through the above examples, the operation diversity of the quenching tank 1 is reflected. Different operation modes can be adopted according to the different properties of the fork, which improves the convenience of use, expands the application scope of the heat treatment system, and improves practicality;

[0050] When the drive shaft 23 and the rotating rod 26 are connected through the cooperation of the card slot 27 and the card block 25, the drive device 24 drives the drive shaft 23 to rotate through the transmission shaft 29, the drive shaft 23 drives the rotating rod 26 to rotate, and the rotating rod 26 drives the shift fork to rotate through the placement rack 28; on the one hand, before heating, the placement rack 28 drives the rotation of the shift fork to throw away the impurities on the shift fork, and cooperates with the jet blowing of the air cooling box 2 to improve the cleaning efficiency of the shift fork before heating and improve the heat treatment efficiency; on the other hand, when cooling, the drive shaft 23 is also The rotating rod 26 is driven to rotate in water or oil, and the placement frame 28 drives the shift fork to rotate in water, stirring the water in the water quenching pool in the quenching pool 1, so that the overall temperature distribution of the water in the water quenching pool in the quenching pool 1 is uniform, thereby avoiding affecting the quenching effect of the shift fork; and the rotation of the shift fork generates centrifugal force, and impurities generated by the contact between the shift fork and the quenching liquid can be thrown away from the shift fork, and gradually move away from the centrifugal force generated by the rotation of the quenching liquid until they are close to the inner wall of the quenching pool 1, thereby maintaining the cleanliness of the shift fork when it is cooled, improving the quenching effect, and thus improving the heat treatment effect;

[0051] After a long period of quenching treatment, the impurities in the quenching liquid gradually increase. The staff starts the filter 14, sucks the quenching liquid from the inlet 13 close to the bottom of the quenching pool 1, and sprays the quenching liquid from the outlet 12. During the suction and flow of the quenching liquid, the impurities deposited at the bottom of the quenching pool 1 are carried away and enter the filter 14 through the inlet 13, so as to achieve the purpose of using the quenching liquid to flush and remove the impurities at the bottom of the quenching pool 1, reduce the residual impurities in the quenching pool 1, improve the cleanliness of the quenching pool 1, and avoid the filtered quenching liquid being contaminated by excessive residual impurities, thereby improving the heat treatment efficiency.

[0052] Embodiment 2:

[0053] Based on the first embodiment, as shown in the accompanying drawings of the specification Figure 1-Figure 9As shown, the placement rack 28 is evenly provided with placement slots 3, and the placement slots 3 on adjacent placement racks 28 are staggered, and screws 31 are symmetrically provided on the inner walls of the placement slots 3 on both sides, and the screws 31 are threadedly connected to the inner walls of the placement slots 3; one end of the screw 31 is rotatably connected to a fixing plate 32, and two symmetrical fixing plates 32 and the screw 31 form a group, and multiple groups are provided in the placement slot 3; recesses 33 are evenly provided on the opposite side walls of the fixing plates 32, and the ends of the shift forks are located in the recesses 33, and the two symmetrical fixing plates 32 are close to each other, and the shift forks are fixed in the placement slots 3 through the recesses 33; the cross-section of the fixing plate 32 is U-shaped, and the two ends of the opening of the fixing plate 32 are inserted into the inner walls of the placement slots 3, and are telescoped in the inner walls of the placement slots 3. Due to the limitation of the sliding of the fixing plate 32 in the placement slot 3, the purpose of rotating the screw 31 and keeping the fixing plate 32 in a horizontal state is achieved;

[0054] The driving shaft 23 and the rotating rod 26 are both hollow structures, and the top of the driving shaft 23 is slidably connected with a sealing cover 34 through a spring, and the driving shaft 23 is connected with the air supply device 22; a push rod 35 is fixedly connected to the axis position of the bottom of the rotating rod 26, and the bottom of the push rod 35 contacts the sealing cover 34; when the rotating rod 26 is connected and merged with the driving shaft 23, the push rod 35 pushes the sealing cover 34 downward, and the inside of the driving shaft 23 and the rotating rod 26 are connected with each other; the bottom of the placement frame 28 is evenly provided with blowing holes 36, and the blowing holes 36 are located between adjacent placement slots 3, and the blowing holes 36 are arranged in a direction away from the rotating rod 26;

[0055] A No. 1 filter screen 37 is provided between the sealing cover 34 and the inner wall of the driving shaft 23; when the sealing cover 34 is squeezed into the driving shaft 23, the No. 1 filter screen 37 is pulled and unfolded; the No. 1 filter screen 37 is conical and cylindrical, and one end of the No. 1 filter screen 37 is connected to the top of the driving shaft 23, and the other end is connected to the outer ring of the sealing cover 34. The No. 1 filter screen 37 is a conventional part used for filtering air.

[0056] Specific work flow: when installing the shift fork, since the shift forks are all Y-shaped, with a single vertex and two vertices close to each other, a screw rod 31 and a fixing plate 32 in a group are fixed, and a single vertex in the shift fork is pressed against the recess 33 in a fixed state, and the unfixed screw rod 31 in the same group is rotated; as the screw rod 31 rotates and gradually rotates out of the inner wall of the placement groove 3, the unfixed recess 33 approaches the two close vertices in the shift fork, so that the three vertices of the shift fork are all in the recess 33, and then the screw rod 31 in the same group is fixed to complete the installation and fixation of the shift fork; through the above-mentioned installation method, the two fixing plates 32 fix the shift fork through the three recesses 33, and one shift fork is fixed in a group, so as to achieve the purpose of single placement, reduce the area of ​​the shift forks stacked on each other, and increase the area of ​​the shift fork contacting the quenching liquid, so that the shift fork can contact the quenching liquid more comprehensively, improve the quenching treatment effect, and thus improve the heat treatment effect;

[0057] Since the placement slots 3 on adjacent placement racks 28 are arranged in a staggered manner, for example, the placement slot 3 on the first placement rack 28 is located above the bottom of the second placement rack 28, the placement slot 3 on the second placement rack 28 is located above the bottom of the third placement rack 28, and so on; through the staggered arrangement, the smoke generated by the fork on the first placement rack 28 contacting the quenching liquid is blocked by the second placement rack 28, and is guided away from the remaining forks by the arc surface at the bottom of the second placement rack 28, thereby avoiding the smoke from affecting the fork, improving the quenching effect of the fork, and thus improving the heat treatment effect of the fork;

[0058] When the rotating rod 26 descends and approaches the driving shaft 23, the push rod 35 first squeezes the sealing cover 34 to slide down, and as the card slot 27 and the card block 25 merge, the top of the driving shaft 23 is opened and connected with the inside of the rotating rod 26; the gas output by the gas supply device 22 passes through the transmission shaft 29, the driving shaft 23 and the rotating rod 26 to reach the blowing hole 36, so that when the shift fork descends and contacts the quenching liquid, the blowing hole 36 sprays inert gas from top to bottom to the shift fork at an inclined angle, that is, the inclination angle of the blowing hole 36 becomes more inclined as the distance between the blowing hole 36 and the rotating rod 26 decreases. , until the blowing hole 36 is almost horizontally facing outward; while the arc surface of the placement rack 28 guides the smoke, the blowing hole 36 sprays air to blow the oil mist generated when the fork contacts the quenching liquid away from the subsequent fork above, thereby improving the quenching effect of the same batch of forks, and then improving the heat treatment effect of the fork; and, when the fork is descending, the blowing hole 36 sprays inert gas to the fork, reducing the degree of contact between the fork and oxygen during the cooling process, reducing the generation of oxide scale on the surface of the fork, avoiding the contact between the fork and the quenching liquid being hindered by too much oxide scale, and further improving the quenching effect of the fork;

[0059] Furthermore, the sealing cover 34 slides down and away from the top of the drive shaft 23, so that the sealing cover 34 pulls the No. 1 filter 37 to stretch, and filters the gas sprayed from the drive shaft 23, preventing the blowing hole 36 from spraying impurities that may be carried in the gas onto the shift fork, increasing the protection measures during the quenching process of the shift fork, and improving the quenching effect of the shift fork.

[0060] Embodiment three:

[0061] Based on the second embodiment, as shown in the accompanying drawings of the specification Figure 1-Figure 9As shown, both sides of the air-cooling box 2 are arcuate surfaces, and the side of the filter box 11 close to the air-cooling box 2 is an arcuate surface, and one side of the air-cooling box 2, one side of the filter box 11 and the inner wall of the quenching pool 1 form a circle; a No. 1 brush rod 4 and a No. 2 brush rod 41 are respectively provided at the bottom of the sealing door 21, and a No. 1 cleaning brush 42 and a No. 2 cleaning brush 43 are respectively provided on the No. 1 brush rod 4 and the No. 2 brush rod 41, the No. 1 brush rod 4 is located in the air-cooling box 2, and the No. 2 brush rod 41 is close to the arcuate surfaces on both sides of the air-cooling box 2, and the No. 1 cleaning brush 42 and the No. 2 cleaning brush 43 are both located between adjacent placement racks 28; the hardness of the No. 1 cleaning brush 42 and the No. 2 cleaning brush 43 is lower than that of the fork, and the parts close to the fork are all high temperature resistant to avoid excessive temperature when the fork is cooled, which affects the normal operation of the parts;

[0062] A storage chamber 44 is provided in the inner wall of the air cooling box 2, and a cleaning solvent and gas are stored in the storage chamber 44; nozzles 45 are evenly provided on the No. 1 brush rod 4, and the nozzles 45 are connected to the storage chamber 44; the cleaning solvent is a conventional solution used for cleaning quenching parts before heating, and a solenoid valve is provided inside the storage chamber 44, and is controlled by the heat treatment system; when the solenoid valve is in a closed state, high-pressure gas and cleaning solvent are statically stored in the storage chamber 44; when the solenoid valve is in an open state, the high-pressure gas in the storage chamber 44 carries the cleaning solvent and is ejected through the nozzle 45; the gas in the storage chamber 44 is also an inert gas;

[0063] An arc groove 5 is provided in the No. 2 brush rod 41, and an arc rod 51 is slidably connected in the arc groove 5 via a spring; comb teeth 52 are respectively provided at the top and bottom of the arc rod 51, and the comb teeth 52 are located at one end of the arc rod 51, and the comb teeth 52 are located between adjacent placement racks 28; a shift block 53 is hinged at one end of the comb tooth 52 via a torsion spring, and the shift block 53 contacts the arc surface at the bottom of the placement rack 28.

[0064] Specific working process: when cleaning before heating, the sealing door 21 is opened, and the sealing door 21 drives the No. 1 brush rod 4 and the No. 2 brush rod 41 to move; then, the rotating rod 26 descends into the air cooling box 2, and the sealing door 21 closes the No. 1 brush rod 4. During the resetting process of the No. 1 brush rod 4 and the No. 2 brush rod 41, the No. 1 brush rod 4 moves close to the placement rack 28, and the No. 1 cleaning brush 42 extends between the upper and lower adjacent placement racks 28; as the rotating rod 26 drives the fork to rotate through the placement rack 28, the No. 1 cleaning brush 42 cleans the top of the lower fork and the bottom of the upper fork, removes impurities on the surface of the fork, and improves the cleaning degree of the fork. At the same time, since the hardness of the No. 1 cleaning brush 42 and the No. 2 cleaning brush 43 is lower than that of the fork, wear on the surface of the fork during the cleaning process is avoided;

[0065] Furthermore, while the No. 1 cleaning brush 42 is cleaning, the air blowing hole 36 blows air toward the No. 1 cleaning brush 42, blowing the cleaned impurities away from the fork and dropping them to the bottom of the air-cooled box 2; and the staff can also install an exhaust duct at the bottom of the air-cooled box 2, connecting it to the exhaust port of the air supply device 22, so as to achieve the effect of internal air circulation of the air-cooled box 2, promote impurities to fall to the bottom of the air-cooled box 2, thereby preventing fine impurities from floating in the internal environment of the air-cooled box 2;

[0066] Moreover, if there are rust stains or oil stains on the fork, during the cleaning process of the No. 1 cleaning brush 42, the solenoid valve in the storage chamber 44 is started, and the storage chamber 44 sprays the cleaning solvent to the No. 1 cleaning brush 42 through the nozzle 45, so as to avoid excessive residue of the cleaning solvent on the surface of the fork due to direct spraying; the No. 1 cleaning brush 42 removes the oil stains on the fork with the cooperation of the cleaning solvent, improves the cleanliness of the surface of the fork, and thus improves the quenching effect of the fork; after the cleaning is completed, the rotating rod 26 is rotated to the position where the placement rack 28 is located above and below the No. 1 cleaning brush 42, so that the No. 1 cleaning brush 42 no longer contacts the fork, and blows air at a close distance through the blowing hole 36 to accelerate the drying of the fork surface and improve the quenching efficiency;

[0067] When the shift fork is cooled in the air cooling box 2, the rotating rod 26 is also rotated to the position where the placement rack 28 is located above and below the No. 1 cleaning brush 42, and then the sealing door 21 is closed so that the No. 1 cleaning brush 42 does not contact the shift fork, thereby preventing the cooling area of ​​the shift fork from being affected by the No. 1 cleaning brush 42, thereby improving the quenching effect;

[0068] When the shift fork enters the quenching liquid for cooling, the sealing door 21 opens, and the No. 2 brush rod 41 drives the No. 2 cleaning brush 43 to extend between the adjacent placement racks 28, and the rotating rod 26 drives the shift fork to rotate in the quenching liquid through the placement rack 28, and the No. 2 cleaning brush 43 sweeps away impurities such as sludge and debris generated when the shift fork is in continuous contact with the quenching liquid; and, one side of the air cooling box 2, one side of the filter box 11 and the inner wall of the quenching pool 1 form a circle, so that when the rotating rod 26 drives the placement rack 28 to rotate, it can more easily drive the quenching liquid to rotate in the quenching pool 1, and the centrifugal force generated by the quenching liquid cooperates with the cleaning of the No. 2 cleaning brush 43 to remove impurities on the shift fork, so that the impurities are affected by the quenching liquid and move along the inner wall of the circle, thereby reducing the influence of the impurities on the shift fork, improving the quenching effect of the shift fork, and further improving the heat treatment effect of the shift fork;

[0069] During the cleaning process of the No. 2 cleaning brush 43, the placement frame 28 drives the bottom arc-shaped part to rotate until it contacts the shift block 53. At this time, the torsion spring between the shift block 53 and the comb teeth 52 is not subjected to the force that satisfies its twisting, so that the placement frame 28 drives the comb teeth 52 to move through the shift block 53; the comb teeth 52 drive the arc-shaped rod 51 to move along the arc groove 5 until the comb teeth 52 shift and comb the No. 2 cleaning brush 43, scrape off the oil and impurities mixed in the No. 2 cleaning brush 43, maintain the cleaning ability of the No. 2 cleaning brush 43, improve the quenching effect of the shift fork, and thus improve the heat treatment effect of the shift fork; when one end of the arc-shaped rod 51 contacts one end of the arc groove 5, the arc-shaped rod 51 is blocked, causing the comb teeth 52 and the shift block 53 to stop moving, and the placement frame 28 continues to rotate, squeezing the shift block 53 to swing, until the arc-shaped part of the placement frame 28 passes over the shift block 53, and the shift block 53 is no longer squeezed, and the arc-shaped rod 51 drives the comb teeth 52 and the shift block 53 to move in the opposite direction and reset.

[0070] Embodiment 4:

[0071] Based on the third embodiment, as shown in the accompanying drawings of the specification Figure 1-Figure 9 As shown, hooks 54 are evenly arranged at the bottom of the comb teeth 52, and the hooks 54 are bent toward the arc groove 5; the side where adjacent hooks 54 are close to each other is an inclined surface, and the bottom surface of the comb teeth 52 located between adjacent hooks 54 is an inclined surface, and the inclined surfaces of every two adjacent hooks 54 and the inclined surfaces of the comb teeth 52 form a channel for the second cleaning brush 43 to pass through, and the diameter of one end of the channel is larger than the diameter of the other end, and the end with the larger diameter of the channel is close to the arc groove 5;

[0072] A sleeve 6 is sleeved on the top of the No. 2 brush rod 41, and a clamping block 61 is slidably connected in the sleeve 6 through a spring, and the No. 2 brush rod 41 is engaged with the clamping block 61; the sleeve 6 is fixedly connected to the bottom of the sealing door 21; a swivel 62 is sleeved on the transmission shaft 29, and the swivel 62 and the transmission shaft 29 are arranged to rotate in one direction, for example, the swivel 62 and the transmission shaft 29 are connected through a one-way bearing, and a linkage rod 63 is provided on the outer surface of the swivel 62, and the bottom of the No. 2 brush rod 41 and the top of the linkage rod 63 are connected through a spring. Sliding connection; the No. 2 brush rod 41 is rhombus-shaped, the cross-section of the clamping block 61 is concave, and the middle position of the concave shape of the clamping block 61 is an inclined surface; when the No. 2 brush rod 41 is stationary, the No. 2 brush rod 41 is located in the middle hollow position of the concave shape of the clamping block 61; when the No. 2 brush rod 41 moves close to the clamping block 61, the rhombus-shaped edges of the No. 2 brush rod 41 squeeze the clamping block 61 into the sleeve 6 until the No. 2 brush rod 41 moves to the middle hollow position of the clamping block 61, and the clamping block 61 re-engages and fixes the No. 2 brush rod 41.

[0073] Specific working process: when the comb teeth 52 comb the No. 2 cleaning brush 43, the comb teeth 52 drive the hook 54 to pass through the No. 2 cleaning brush 43, and the hook 54 hooks out the oil or flocs that are difficult to comb out of the No. 2 cleaning brush 43 for cleaning, thereby maintaining the cleaning ability of the No. 2 cleaning brush 43; and, since the inclined surfaces of each two adjacent hooks 54 and the inclined surfaces of the comb teeth 52 form a channel for the No. 2 cleaning brush 43 to pass through, the diameter of one end of the channel is larger than the diameter of the other end, and the end with the larger diameter of the channel is close to the arc groove 5, so that the No. 2 cleaning brush 43 will be squeezed by the gradually shrinking inner wall in the channel during the process of passing through this channel, and the oil in the No. 2 cleaning brush 43 will be squeezed out, and the oil will be kept away from the fork by the rotating centrifugal effect of the quenching liquid, thereby further ensuring the cleaning ability of the No. 2 cleaning brush 43, achieving the purpose of the fork being able to contact the quenching liquid well, and improving the quenching effect of the fork;

[0074] Furthermore, the staff can also set the arc groove 5, arc rod 51, comb teeth 52, shift block 53 and hook 54 described above on the No. 1 brush rod 4 as needed, and clean the No. 1 cleaning brush 42 in the same way as the No. 2 cleaning brush 43, so that the No. 1 cleaning brush 42 can continue to maintain the cleaning ability of the shift fork;

[0075] Since the driving device 24 uses a conventional motor with forward and reverse functions, when the fork is cleaned or cooled, the driving device 24 rotates forward, and the rotating ring 62 is not affected by the rotation of the transmission shaft 29 and remains fixed and does not rotate; when the quenching liquid is filtered or replaced, the driving device 24 drives the rotating ring 62 to reverse through the transmission shaft 29;

[0076] When the second brush rod 41 is stationary, the second brush rod 41 is located in the concave middle hollow position of the clamping block 61;

[0077] When the rotating ring 62 drives the second brush rod 41 to rotate through the linkage rod 63, the second brush rod 41 squeezes and disengages from the clamping block 61, reverses along the circular inner wall formed by one side of the air cooling box 2, one side of the filter box 11 and the inner wall of the quenching pool 1, and scrapes the circular inner wall to scrape off the impurities adhering to the inner wall and the bottom, thereby improving the cleanliness of the quenching pool 1 and avoiding contamination of the quenching liquid that is re-filtered or replaced, thereby improving the quenching effect of the fork;

[0078] When the second brush rod 41 needs to be reset, the second brush rod 41 rotates to be close to the clamping block 61, and the diamond-shaped edge of the second brush rod 41 squeezes the clamping block 61 into the sleeve 6 until the second brush rod 41 moves to the hollow position in the middle of the clamping block 61, and the clamping block 61 re-engages and fixes the second brush rod 41, and the transmission shaft 29 stops driving the linkage rod 63 to rotate, and the second brush rod 41 is reset;

[0079] When the second brush rod 41 drives the second cleaning brush 43 to work, the rotating ring 62 and the linkage rod 63 are fixed and do not rotate, and the sealing door 21 drives the second brush rod 41 to move on the linkage rod 63 close to the shifting fork to complete the cleaning work.

[0080] Embodiment five:

[0081] Based on the fourth embodiment, as shown in the accompanying drawings of the specification Figure 1-Figure 10 As shown, a drainage plate 64 is evenly arranged on the top of the quenching pool 1, and one end of the drainage plate 64 extends into the quenching pool 1; a second filter screen 65 is arranged on the end of the drainage plate 64 away from the quenching pool 1; the drainage plate 64 is close to the inner wall of the quenching pool 1, and the drainage plate 64 is inclined;

[0082] The guide plate 64 is evenly provided with a third filter screen 66 , and the third filter screen 66 is inclined.

[0083] Specific working process: when the quenching liquid is stirred by the rotating rod 26 and the placement rack 28 to be in a rotating state, the drainage plate 64 extends into one end of the quenching pool 1 to guide the rotating quenching liquid, and guides the quenching liquid to flow through the drainage plate 64 and then fall back into the quenching pool 1; when the quenching liquid flows through the drainage plate 64 and falls, it passes through the second filter 65, and the second filter 65 filters the suspended impurities in the quenching liquid, thereby improving the cleanliness of the quenching liquid when cooling the shift fork, avoiding excessive suspended impurities in the quenching liquid from affecting the quenching work of the shift fork, thereby improving the quenching effect of the shift fork;

[0084] Furthermore, when the quenching liquid flows on the drain plate 64, it passes through multiple inclined No. 3 filters 66. The No. 3 filter 66 is inclined toward the end of the drain plate 64 away from the quenching pool 1, so that the quenching liquid passing through the No. 3 filter 66 will be slightly filtered and blocked by the No. 3 filter 66. On the one hand, a part of the suspended matter is filtered in advance to improve the cleaning efficiency. On the other hand, the flow rate of the quenching liquid on the drain plate 64 is reduced to avoid the quenching liquid on the drain plate 64. Too fast flow rate, resulting in the quenching liquid carrying suspended impurities directly passing over the No. 2 filter 65, affecting the filtering effect; and, because the drain plate 64 is located at the top of the quenching pool 1 and is exposed to the outside, the staff can easily clean the drain plate 64 with tools, thereby improving the convenience of use.

Claims

1. A shift fork workpiece forging heat treatment system, comprising a quenching device, a transfer device and a cooling device; characterized in that: Also includes: A quenching pool (1), the quenching pool (1) being installed in a cooling device, and the quenching pool (1) being located on one side of the quenching device; filter boxes (11) being installed at both ends of the quenching pool (1), and the sides of the filter boxes (11) close to each other are respectively provided with an outlet (12) and an inlet (13), and the outlet (12) is located above the inlet (13); a filter (14) is provided in the filter box (11), and the filter (14) is used to filter the quenching liquid in the quenching pool (1); An air cooling box (2), wherein the air cooling box (2) is arranged between two filter boxes (11), and a sealing door (21) is slidably installed on the top of the air cooling box (2); an air supply device (22) is arranged on one side of the quenching pool (1), and the air supply device (22) conveys inert gas to the air cooling box (2); drive shafts (23) are evenly arranged in the quenching pool (1), and a drive device (24) arranged at the bottom of the quenching pool (1) is connected to and drives the drive shaft (23), and the drive shaft (23) is evenly distributed at the bottom of the air cooling box (2) and the bottom of the quenching pool (1) on both sides of the air cooling box (2); a clamping block (25) is arranged on the top of the drive shaft (23), and a rotating rod (26) is arranged on the top of the drive shaft (23), and a clamping groove (27) provided at the bottom of the rotating rod (26) cooperates with the clamping block (25); a placement rack (28) is evenly arranged on the rotating rod (26), and a workpiece is placed on the placement rack (28); A transmission shaft (29), wherein the bottom of the driving shaft (23) is sleeved with the transmission shaft (29), and a spring is arranged between the transmission shaft (29) and the driving shaft (23), the driving shaft (23) is located inside the transmission shaft (29) and is lifted and lowered, and the bottom of the transmission shaft (29) is connected to the driving device (24); when the driving shaft (23) is not squeezed, the top of the driving shaft (23) is located above the liquid surface; The placement rack (28) is evenly provided with placement grooves (3), the placement grooves (3) on adjacent placement racks (28) are staggered, and screw rods (31) are symmetrically provided on the inner walls of the placement grooves (3) on both sides, and the screw rods (31) are threadedly connected to the inner walls of the placement grooves (3); one end of the screw rod (31) is rotatably connected to a fixing plate (32), two symmetrical fixing plates (32) and the screw rod (31) form a group, and a plurality of groups are provided in the placement groove (3); recesses (33) are evenly provided on the opposite side walls of the fixing plate (32), and the end of the shift fork is located in the recess (33), and the two symmetrical fixing plates (32) are close to each other, and the shift fork is fixed in the placement groove (3) through the recess (33); Both sides of the air cooling box (2) are arcuate surfaces, and the side of the filter box (11) close to the air cooling box (2) is an arcuate surface, and one side of the air cooling box (2), one side of the filter box (11) and the inner wall of the quenching pool (1) form a circle; a first brush rod (4) and a second brush rod (41) are respectively provided at the bottom of the sealing door (21), and a first cleaning brush (42) and a second cleaning brush (43) are respectively provided on the first brush rod (4) and the second brush rod (41), the first brush rod (4) is located in the air cooling box (2), the second brush rod (41) is respectively close to the arcuate surfaces on both sides of the air cooling box (2), and the first cleaning brush (42) and the second cleaning brush (43) are both located between adjacent placement racks (28).

2. A shift fork workpiece forging heat treatment system according to claim 1, characterized in that: The driving shaft (23) and the rotating rod (26) are both hollow structures, and the top of the driving shaft (23) is slidably connected to a sealing cover (34) through a spring, and the driving shaft (23) is connected to the air supply device (22); a push rod (35) is fixedly connected to the bottom axis position of the rotating rod (26), and the bottom of the push rod (35) contacts the sealing cover (34); when the rotating rod (26) and the driving shaft (23) are connected and merged, the push rod (35) pushes the sealing cover (34) downward, and the inside of the driving shaft (23) and the rotating rod (26) are connected to each other; the bottom of the placement frame (28) is evenly provided with blowing holes (36), and the blowing holes (36) are located between adjacent placement slots (3), and the blowing holes (36) are arranged in a direction away from the rotating rod (26).

3. A shift fork workpiece forging heat treatment system according to claim 2, characterized in that: A filter screen (37) is provided between the sealing cover (34) and the inner wall of the driving shaft (23); when the sealing cover (34) is squeezed into the driving shaft (23), the filter screen (37) is pulled and unfolded.

4. A shift fork workpiece forging heat treatment system according to claim 1, characterized in that: A storage chamber (44) is provided in the inner wall of the air cooling box (2), and cleaning solvent and gas are stored in the storage chamber (44); nozzles (45) are evenly provided on the first brush rod (4), and the nozzles (45) are communicated with the storage chamber (44).

5. The shift fork workpiece forging heat treatment system according to claim 1, characterized in that: The second brush rod (41) is provided with an arc groove (5), and an arc rod (51) is slidably connected in the arc groove (5) via a spring; comb teeth (52) are respectively provided at the top and bottom of the arc rod (51), and the comb teeth (52) are located at one end of the arc rod (51), and the comb teeth (52) are located between adjacent placement racks (28); one end of the comb teeth (52) is hinged with a shifting block (53) via a torsion spring, and the shifting block (53) contacts the arc surface at the bottom of the placement rack (28).

6. A shift fork workpiece forging heat treatment system according to claim 5, characterized in that: The bottom of the comb teeth (52) is evenly provided with hooks (54), and the hooks (54) are bent toward the arc groove (5); the side where the adjacent hooks (54) are close to each other is an inclined surface, and the bottom surface of the comb teeth (52) located between the adjacent hooks (54) is an inclined surface, and the inclined surfaces of every two adjacent hooks (54) and the inclined surfaces of the comb teeth (52) form a channel for the second cleaning brush (43) to pass through, and the diameter of one end of the channel is larger than the diameter of the other end, and the end with the larger diameter of the channel is close to the arc groove (5).

7. The shift fork workpiece forging heat treatment system according to claim 5, characterized in that: The top of the No. 2 brush rod (41) is sleeved with a sleeve (6), and a clamping block (61) is slidably connected to the sleeve (6) via a spring, and the No. 2 brush rod (41) is engaged with the clamping block (61); the sleeve (6) is fixedly connected to the bottom of the sealing door (21); a swivel (62) is sleeved on the transmission shaft (29), and the swivel (62) and the transmission shaft (29) are unidirectionally rotatable, a linkage rod (63) is provided on the outer ring surface of the swivel (62), and the bottom of the No. 2 brush rod (41) is slidably connected to the top of the linkage rod (63) via a spring.

8. The shift fork workpiece forging heat treatment system according to claim 1, characterized in that: Drainage plates (64) are evenly arranged on the top of the quenching pool (1), and one end of the drainage plate (64) extends into the quenching pool (1); a second filter screen (65) is arranged on the end of the drainage plate (64) away from the quenching pool (1).

9. A shift fork workpiece forging heat treatment system according to claim 8, characterized in that: The guide plate (64) is evenly provided with a third filter screen (66), and the third filter screen (66) is arranged obliquely.

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