Roller part surface heat treatment device

Abstract

The utility model relates to the technical field of heat treatment equipment, in particular to a roller type part surface heat treatment device which comprises a bottom frame, a circumferential rotating device is arranged on the bottom frame, the circumferential rotating device comprises a motor driving assembly and two groups of roller rotating assemblies, and the two groups of roller rotating assemblies are arranged on the bottom frame side by side. The motor driving assembly drives the roller rotating assembly to rotate in the circumferential direction, the rolling wheels are placed on the roller rotating assembly and rotate in the circumferential direction along with circumferential rotation of the roller rotating assembly, and the quenching machine is arranged on one side of the roller rotating assembly. And a water tank is arranged below the circumferential rotating device. A protection plate is arranged on the periphery of the roller rotating assembly. Two opposite-type photoelectric switch sets are arranged on the two sides of the roller rotating assembly, one opposite-type photoelectric switch set is arranged on the quenching machine, and the other opposite-type photoelectric switch set is arranged on the opposite face of the quenching machine and fixedly arranged on the protection plate. An audible and visual alarm is arranged at the top end of the quenching machine and used for displaying the operation state of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment equipment, in particular to a surface heat treatment device for roller parts. Background Technique

[0002] In metal processing, in order to improve its surface hardness, strength, etc., the quenching heat treatment process is widely used in the machining industry. Most of the existing surface quenching devices on the market are applicable to general parts. For a certain type of roller parts, the structure is similar to a dumbbell, that is, the roller with a middle cylindrical shaft diameter smaller than the two end cylindrical shaft diameters. There are few special heat treatment devices to heat-treat the surface of the middle cylinder of this type of roller shaft. When using general heat treatment equipment for heat treatment processing, the heat treatment effect is not good, resources are wasted, and production costs are increased. Therefore, it is necessary to design a special heat treatment device to overcome the above problems. Summary of the Invention

[0003] In order to overcome the disadvantages and deficiencies existing in the prior art, the purpose of the utility model is to provide a surface heat treatment device for roller parts to perform heat treatment operations on the surface of the middle cylindrical shaft of "dumbbell" type roller parts.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A surface heat treatment device for roller parts includes a chassis. A circumferential rotation device is arranged on the chassis. The circumferential rotation device is a sprocket drive device including a motor drive component and a roller rotation component. The motor drive component includes a motor, the motor is fixedly arranged on the chassis, and a second sprocket is arranged at the output shaft end of the motor; there are two groups of roller rotation components, and they are arranged side by side on the chassis. The roller rotation component includes a screw shaft. A set of pillow block bearings is arranged at each end of the screw shaft. The pillow block bearings are fixedly arranged on the installation cross beam. A thread is arranged in the middle part of the screw shaft, and a support wheel is screwed thereon. A set of fastening blocks is arranged on each side end face of the support wheel. A first sprocket is also arranged at one side shaft end of the screw shaft. The first sprocket and the second sprocket are matched. A roller is arranged on the support wheel.

[0006] A quenching machine is arranged on one side of the roller rotation component. A water tank is arranged below the roller rotation component. The water tank is fixedly arranged on the chassis. A guard plate is also arranged outside the roller rotation component. Two groups of opposed photoelectric switch groups are arranged on both sides of the roller rotation component. One group of opposed photoelectric switch groups is arranged on the quenching machine, and one group of opposed photoelectric switch groups is arranged on the opposite side of the quenching machine and is fixedly arranged on the guard plate. The opposed photoelectric switch groups detect the position deviation of the roller during circumferential rotation on the roller rotation component.

[0007] The fastening screw block includes a screw block body, insertion pins, and insertion caps. The outer edge of the screw block body is a hexahedron nut structure, and a set of insertion pins is inserted and installed on each end face. A set of insertion caps is sleeved on the insertion pins. There are six sets of insertion pins on the screw block body, and the colors of the six sets of insertion caps sleeved on the six sets of insertion pins are different.

[0008] A through sliding long groove is provided on the mounting cross beam, and a fastening screw block is slidably arranged in the sliding long groove. The fastening screw block is fixedly arranged with the pedestal bearing by screws.

[0009] A tensioning assembly is also provided to match the first sprocket and the second sprocket. The tensioning assembly is fixedly arranged on the side plate, and the side plate is fixedly arranged on the chassis. The tensioning assembly includes a mounting block, a tensioning wheel adjusting block, an adjusting screw, a short shaft, and a tensioning wheel. The mounting block is fixedly arranged on the side plate. A tensioning wheel adjusting block is arranged on the mounting block. A sliding long groove is arranged on the tensioning wheel adjusting block. A short shaft is slidably arranged in the sliding long groove. The short shaft is vertically arranged in the sliding groove. The adjusting screw is arranged in the sliding groove along the length direction of the sliding long groove. One side shaft end of the short shaft is screwed on the adjusting screw, and the other side shaft end is provided with a tensioning wheel.

[0010] Multiple groups of adjusting mounting holes are provided on the side plate for mounting the mounting block.

[0011] The opposed photoelectric switch group includes an inductor mounting frame assembly and an opposed photoelectric switch arranged on the inductor mounting frame assembly. The inductor mounting frame assembly includes a chute plate, a sliding seat, a support rod, and an adjusting block. A sliding seat is slidably arranged on the chute plate. Two groups of support rods are horizontally arranged on the sliding seat. An adjusting block is slidably sleeved on the two groups of support rods. An opposed photoelectric switch is arranged on the adjusting block. The chute plate is a long plate structure, with a long hole provided above and a T-shaped chute provided along the length direction below. The sliding seat is slidably arranged in the T-shaped chute.

[0012] The beneficial effects of the present utility model:

[0013] A surface heat treatment device for roller - type parts of the utility model. A circumferential rotation device is arranged on the chassis. The circumferential rotation device includes a motor drive assembly and a roller rotation assembly. There are two sets of roller rotation assemblies, which are arranged side by side on the chassis. The motor drive assembly drives the roller rotation assembly to rotate circumferentially. The roller is placed on the roller rotation assembly and rotates circumferentially as the roller rotation assembly rotates circumferentially. A quenching machine is arranged on one side of the roller rotation assembly. An induction coil is arranged on the quenching machine. The shape and size of the induction coil match the heat treatment position of the roller to perform heat treatment operations on the roller. A water tank is arranged below the circumferential rotation device. A guard plate is also arranged around the roller rotation assembly to prevent cooling water from splashing. Two sets of opposed photoelectric switch groups are arranged on both sides of the roller rotation assembly. One set of opposed photoelectric switch groups is arranged on the quenching machine, and one set of opposed photoelectric switch groups is arranged on the opposite side of the quenching machine and is fixedly arranged on the guard plate to detect the position deviation of the roller when it rotates circumferentially on the roller rotation assembly. An audible and visual alarm is arranged at the top of the quenching machine to display the operating state of the device. This device has a simple structure, is easy to operate, easy to maintain, has a low cost, and has a good heat treatment effect for "dumbbell" - shaped rollers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] To make the above - mentioned objects, features, and advantages of the utility model more obvious and understandable, the following preferred embodiments are specifically given and are accompanied by the attached drawings. However, the embodiments in the drawings do not constitute any limitation to the utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the following drawings.

[0015] Figure 1 is the overall structural schematic diagram;

[0016] Figure 2 is the structural schematic diagram of the circumferential rotation device;

[0017] Figure 3 is the structural schematic diagram of the roller assembly installation;

[0018] Figure 4 is the structural schematic diagram of the fastening screw block;

[0019] Figure 5 is the structural schematic diagram of the tensioning assembly;

[0020] Figure 6 is the structural schematic diagram of the tensioning assembly installation;

[0021] Figure 7 is the structural schematic diagram of the inductor mounting frame assembly;

[0022] Figure 8 is the structural schematic diagram of the inductor mounting frame assembly installation.

[0023] In the figure: 1 - chassis, 101 - side plate, 1011 - adjustment mounting hole, 2 - circumferential rotation device, 201 - screw shaft, 202 - pedestal bearing, 203 - mounting crossbeam, 2031 - sliding long slot, 204 - support wheel, 205 - fastening screw block, 2051 - screw block body, 2052 - inserted pin, 2053 - inserted cap, 206 - first sprocket, 207 - second sprocket, 208 - motor, 209 - nut, 3 - tensioning assembly, 301 - mounting block, 302 - tensioning wheel adjustment block, 303 - adjustment screw, 304 - short shaft, 305 - tensioning wheel, 4 - quenching machine, 401 - induction coil, 5 - inductor mounting frame assembly, 501 - chute plate, 5011 - long hole, 5012 - T-shaped chute, 502 - sliding seat, 503 - support rod, 504 - adjustment block, 6 - water tank, 7 - guard plate, 8 - roller, 9 - light emitter, 10 - light receiver, 11 - acoustic-optic alarm, 12 - controller. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0025] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limited conditions under which the present utility model can be implemented. Therefore, they do not have technical substantial meanings. Any modification of the structure, change of the ratio relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the objectives that can be achieved, should still fall within the scope that can be covered by the technical content disclosed by the present utility model.

[0026] Such as Figure 1As shown in the figure, a surface heat treatment device for roller-like components includes a chassis 1. A circumferential rotation device 2 is arranged on the chassis 1. The circumferential rotation device 2 includes a motor drive assembly and a roller rotation assembly. There are two sets of roller rotation assemblies, which are arranged side by side on the chassis 1. The motor drive assembly drives the roller rotation assembly to rotate circumferentially. The roller 8 is placed on the roller rotation assembly and rotates circumferentially as the roller rotation assembly rotates circumferentially. A quenching machine 4 is arranged on one side of the roller rotation assembly. An induction coil 401 is arranged on the quenching machine 4. The induction coil 401 includes an inductor and a supporting water spraying device, which is used for heat treatment operations on the roller 8. The shape and size of the induction coil 401 match and adapt to the heat treatment position of the roller 8. A water tank 6 is arranged below the circumferential rotation device 2. The water tank 6 is fixedly arranged on the chassis 1. A guard plate 7 is also arranged around the roller rotation assembly to prevent the splashing of cooling water. Two sets of opposed photoelectric switch groups are arranged on both sides of the roller rotation assembly. One set of opposed photoelectric switch groups is arranged on the quenching machine 4, and one set of opposed photoelectric switch groups is arranged on the opposite side of the quenching machine 4 and is fixedly arranged on the guard plate 7, which is used to detect the position deviation of the roller 8 during circumferential rotation on the roller rotation assembly. An audible and visual alarm 11 is arranged at the top of the quenching machine 4, which is used to display the operating state of the device. A controller 12 is also arranged on the chassis 1, which is used to receive signals sent by various electrical components, process signals, and output execution signals to ensure the operation of the device.

[0027] Since the quenching equipment 4 and the induction coil 401 are common heat treatment equipment and accessories, their structures will not be described in detail here.

[0028] The audible and visual three-color alarm 11 is a standard component commonly used on mechanical equipment to display the working state of the mechanical equipment using the color of the light and sound. Its structure will not be described in detail here.

[0029] Such as Figure 2As shown in the figure, the circumferential rotation device 2 is a sprocket drive device, which includes a motor drive assembly and a roller rotation assembly. The motor drive assembly includes a motor 208, which is fixedly arranged on the chassis 1. A second sprocket 207 is arranged at the output shaft end of the motor 208. The roller rotation assembly includes a screw shaft 201. A set of pedestal bearings 202 are arranged at both ends of the screw shaft 201. The pedestal bearings 202 are fixedly arranged on the mounting cross beam 203, and the mounting cross beam 203 is fixedly arranged on the chassis 1. A thread is arranged in the middle part of the screw shaft 201, and two sets of support wheels 204 are screwed thereon for supporting the roller 8. A set of fastening screw blocks 205 are arranged on both end faces of the support wheel 204 for assisting in limiting and fastening the support wheel 204 to reduce the risk of the support wheel 204 shifting. A first sprocket 206 is arranged at one side shaft end of the screw shaft 201. The first sprocket 206 is arranged in a matching manner with the second sprocket 207. A chain is wound around the first sprocket 206 and the second sprocket 207. The motor 208 drives the second sprocket 207 to rotate, the second sprocket 207 drives the first sprocket 206 to rotate, the screw shaft 201 rotates, the support wheel 204 rotates, and the roller 8 placed on the support wheel 204 makes a circumferential rotation.

[0030] As Figure 4 shown, the fastening screw block 205 includes a screw block body 2051, an insertion pin 2052, and an insertion cap 2053. The outer edge of the screw block body 2051 is a hexahedron nut structure, which is screwed on the screw shaft 201. A set of insertion pins 2052 are inserted on each hexahedron end face. A set of insertion caps 2053 are sleeved on the insertion pins 2052. The six sets of insertion caps 2053 sleeved on the six sets of insertion pins 2052 arranged on the screw block body 2051 have different colors. During use, the screw block body 2051 with the insertion pins 2052 is screwed in pairs on both end faces of the support wheel 204. The insertion pins 2052 on the screw block body 2051 correspond one by one. Then, the colored insertion caps 2053 are sleeved on the insertion pins 2052, and the colors of the insertion caps 2053 sleeved on the insertion pins 2052 corresponding one by one on both sides of the support wheel 204 correspond one by one. The support wheel 204 and the fastening screw block 205 rotate with the screw shaft 201 for a long time. If the threaded connection between the support wheel 204 and the fastening screw block 205 becomes loose and the position shifts, the positions of the insertion caps 2053 with the same color marking corresponding one by one will be displaced. At this time, the operator should promptly fasten the relevant loose parts. The application of color marking can visually observe the operation of the machine tool, adjust and maintain it in a timely manner, and improve the stability of the machine tool operation.

[0031] Due to the diversity of the shaft diameters of the rollers 8, in order to make this device applicable to various types of rollers 8 for heat treatment operations, such as Figure 3As shown, a through sliding long groove 2031 is provided on the installation cross beam 203. A fastening screw block 205 is arranged in the sliding long groove 2031. The fastening screw block 205 is slidably arranged in the sliding long groove 2031. A fixing screw hole is provided on the fastening screw block 205, and the fixing screw hole is arranged in a matching manner with the mounting hole of the pedestal bearing 202. The two roller rotating assemblies can move in position on the installation cross beam 203 to adjust the interval distance between them to adapt to different types of rollers 8.

[0032] After the two roller rotating assemblies can move in position on the installation cross beam 203, the tension of the chain wound around the first sprocket 206 and the second sprocket 207 needs to be adjusted.

[0033] As Figure 1 , Figure 2 shown, a tensioning assembly 3 is arranged in a matching manner with the first sprocket 206 and the second sprocket 207. The tensioning assembly 3 is fixedly arranged on the side plate 101, and the side plate 101 is fixedly arranged on the chassis 1. As Figure 5 shown, the tensioning assembly 3 includes a mounting block 301, a tensioning wheel adjusting block 302, an adjusting screw 303, a short shaft 304, and a tensioning wheel 305. The mounting block 301 is fixedly arranged on the side plate 101. A tensioning wheel adjusting block 302 is arranged on the mounting block 301. A long sliding groove is arranged on the tensioning wheel adjusting block 302. The short shaft 304 is slidably arranged in the sliding groove. The short shaft 304 is vertically arranged in the sliding groove. The adjusting screw 303 is arranged in the sliding groove along the length direction of the sliding groove. One side shaft end of the short shaft 304 is screwed on the adjusting screw 303, and the other side shaft end is provided with a tensioning wheel 305. The tensioning wheel 305 is arranged in a matching manner with the first sprocket 206 and the second sprocket 207. A chain is wound around the first sprocket 206, the second sprocket 207, and the tensioning wheel 305. When the adjusting screw 303 is screwed, the short shaft 304 will move left and right along the sliding groove, and the tensioning wheel 305 will move with the short shaft, so as to adjust the tightness of the chain and make the roller rotating assembly operate stably.

[0034] As Figure 6 shown, a plurality of adjusting mounting holes 1011 are provided on the side plate 101. The adjusting mounting holes 1011 are used for mounting and fixing the tensioning assembly 3. The tensioning assembly 3 can be fixedly arranged by pre-selecting a suitable adjusting mounting hole 1011 according to the tension of the chain. After the tensioning assembly 3 is fixedly arranged, the position of the tensioning wheel 305 can be further adjusted by screwing the adjusting screw 303 to adjust the tension of the chain.

[0035] As Figure 7 , Figure 8As shown in the figure, the opposed photoelectric switch group includes an inductor mounting frame assembly 5 and an opposed photoelectric switch. The opposed photoelectric switch includes a light emitter 9 and a light receiver 10. When the opposed photoelectric switch is in use, the light emitter 9 and the light receiver 10 are respectively installed on both sides of the path through which the detected object passes. The detected object blocks or does not block the optical path emitted by the light emitter 9, and the light receiver 10 outputs a control signal. The inductor mounting frame assembly 5 includes a chute plate 501, a sliding seat 502, a support rod 503, and an adjustment block 504. The chute plate 501 is a long plate-shaped structure, and a long hole 5011 is provided above for installing and fixing the chute plate 501. A T-shaped chute 5012 is provided below along the length direction for slidably arranging the sliding seat 502. Two groups of through circular holes are horizontally arranged on the sliding seat 502, and the support rod 503 is passed through the circular holes. The two groups of support rods 503 are slidably sleeved with the adjustment block 504, and the adjustment block 504 can slide on the support rod 503 for position adjustment. An opposed photoelectric switch is provided on the adjustment block 504.

[0036] In this embodiment, two groups of sliding seats 502 are provided on the chute plate 501. The support rod 503 is passed through each group of sliding seats 502, and the adjustment block 504 is slidably sleeved on the support rod 503.

[0037] As Figure 8 shown, two groups of inductor mounting frame assemblies 5 are provided, which are respectively arranged on both sides of the roller rotating assembly. One group is arranged on the quenching device 4, and the other group is arranged on the opposite side guard plate 7 of the quenching device 4. A light emitter 9 is provided on the inductor mounting frame assembly 5 arranged on one side of the quenching device 4, and a light receiver 10 is provided on the inductor mounting frame assembly 5 arranged on the guard plate 7. The light emitter 9 and the light receiver 10 should be correspondingly and matchingly arranged, and the positions of the light emitter 9 and the light receiver 10 should be matchingly arranged with the position of the roller 8 arranged on the roller rotating assembly. The two groups of light emitters 9 and light receivers 10 are arranged on the outer end surface of the roller 8, and the initial position is that the roller 8 can block the optical path emitted by the light emitter 9 and the optical path is not received by the light receiver 10. When the position of the roller 8 deviates during long-term circumferential rotation, the optical path emitted by the light emitter 9 is received by the light receiver 10. The light receiver 10 outputs a signal, the controller 12 receives the signal, the controller 12 processes and outputs a signal to the acoustic-optic alarm 11 to give an acoustic-optic alarm, prompting the operator to check and adjust the position of the roller 8.

[0038] Before using this device, debug each component of the device: 1. Adjust the distance between the two sets of roller rotation components according to the roller 8 to be heat-treated; 2. Adjust the position of the support wheels 204 provided on the screw shaft 201. The distance between the support wheels 204 should match the outer diameter of the roller 8, so that the roller 8 rolls in a circle on the support wheels 204; 3. Tighten the fastening blocks 205 provided on both sides of the support wheels 204, and set the insertion caps 2053 on the corresponding insertion pins 2052 one by one according to the color. During long-term operation, the operator can visually determine whether the support wheels 204 and the fastening blocks 205 are loose; 4. Adjust the position of the tensioning wheel 305 to ensure the tension of the chain; 5. Select a suitable induction coil 401 and install it on the quenching machine 4; 6. Adjust and debug the positions of the emitter 9 and the receiver 10 on the transmissive photoelectric switch group to detect the running position of the roller 8 on the support wheels 204. After the above debugging is completed, perform the heat treatment operation on the roller 8. Place the roller 8 on the support wheels 204, start the motor 208, the motor 208 drives the second sprocket 207 to rotate, the first sprocket 206 runs driven by the chain, the circumferential rotation device starts to run, the roller 8 starts to rotate in a circle, and at the same time the quenching machine 4 is started and the induction coil 401 starts to work. The induction coil 401 performs heat treatment on the roller 8. After the heat treatment operation of the roller 8 is completed, the induction coil 401 stops the heat treatment operation, the circumferential rotation device stops running, remove the roller 8 and place it in the specified area. Take a new roller 8 to be heat-treated and place it on the support wheels 204 to perform a new round of heat treatment work.

Claims

1. A surface heat treatment device for roller parts, including a chassis (1), on which a circumferential rotation device (2) is arranged. The circumferential rotation device (2) is a sprocket drive device, including a motor drive component and a roller rotation component. It is characterized in that: The motor drive component includes a motor (208), which is fixedly arranged on the chassis (1), and a second sprocket (207) is arranged at the output shaft end of the motor (208); There are two groups of roller rotation components, which are arranged side by side on the chassis (1). The roller rotation component includes a screw shaft (201). At both ends of the screw shaft (201), a group of pedestal bearings (202) are arranged respectively. The pedestal bearings (202) are fixedly arranged on the mounting cross beam (203). The middle part of the screw shaft (201) is threaded, and a support wheel (204) is screwed thereon. At both end faces of the support wheel (204), a group of fastening screw blocks (205) are arranged respectively. At one side shaft end of the screw shaft (201), a first sprocket (206) is also arranged. The first sprocket (206) and the second sprocket (207) are matched. A roller (8) is arranged on the support wheel (204); A quenching machine (4) is arranged on one side of the roller rotation component, and a water tank (6) is arranged below the roller rotation component. The water tank (6) is fixedly arranged on the chassis (1). A guard plate (7) is also arranged around the roller rotation component. Two groups of opposed photoelectric switch groups are arranged on both sides of the roller rotation component. One group of opposed photoelectric switch groups is arranged on the quenching machine (4), and one group of opposed photoelectric switch groups is arranged on the opposite side of the quenching machine (4) and is fixedly arranged on the guard plate (7). The opposed photoelectric switch groups detect the position offset of the roller (8) when it rotates circumferentially on the roller rotation component.

2. The surface heat treatment device for a roller-like part according to claim 1, wherein: The fastening screw block (205) includes a screw block body (2051), an insertion pin (2052), and an insertion cap (2053). The outer edge of the screw block body (2051) is a hexahedron nut structure, and a group of insertion pins (2052) are inserted on each end face respectively. A group of insertion caps (2053) are sleeved on the insertion pins (2052). Six groups of insertion pins (2052) are arranged on the screw block body (2051), and the colors of the six groups of insertion caps (2053) sleeved on the six groups of insertion pins (2052) are different from each other.

3. A surface heat treatment device for roller parts according to claim 1, characterized in that: A through sliding long groove (2031) is arranged on the mounting cross beam (203), and the fastening screw block (205) is slidably arranged in the sliding long groove (2031). The fastening screw block (205) and the pedestal bearing (202) are fixedly arranged with screws.

4. A surface heat treatment device for roller-like parts according to claim 1, characterized in that: A tensioning assembly (3) is also provided to match with the first sprocket wheel (206) and the second sprocket wheel (207). The tensioning assembly (3) is fixedly arranged on the side plate (101), and the side plate (101) is fixedly arranged on the chassis (1). The tensioning assembly (3) includes a mounting block (301), a tensioning wheel adjusting block (302), an adjusting screw rod (303), a short shaft (304), and a tensioning wheel (305). The mounting block (301) is fixedly arranged on the side plate (101). The tensioning wheel adjusting block (302) is arranged on the mounting block (301). A sliding long groove is arranged on the tensioning wheel adjusting block (302). The short shaft (304) is slidably arranged in the sliding long groove. The short shaft (304) is vertically arranged in the sliding groove. The adjusting screw rod (303) is arranged in the sliding groove along the length direction of the sliding long groove. One side shaft end of the short shaft (304) is screwed on the adjusting screw rod (303), and the other side shaft end is provided with the tensioning wheel (305).

5. The surface heat treatment device for a roller-like part according to claim 4, characterized in that: Multiple groups of adjusting mounting holes (1011) are arranged on the side plate (101), and the adjusting mounting holes (1011) are used for mounting the mounting block (301).

6. The surface heat treatment device for a roller - type part according to claim 1, characterized in that: The opposed photoelectric switch group includes an inductor mounting frame assembly (5) and an opposed photoelectric switch arranged on the inductor mounting frame assembly (5). The inductor mounting frame assembly (5) includes a chute plate (501), a sliding seat (502), a support rod (503), and an adjusting block (504). The sliding seat (502) is slidably arranged on the chute plate (501). Two groups of support rods (503) are parallelly arranged through the sliding seat (502). The two groups of support rods (503) are slidably sleeved with the adjusting block (504), and the opposed photoelectric switch is arranged on the adjusting block (504).

7. A surface heat treatment device for roller parts according to claim 6, characterized in that: The chute plate (501) is of a long plate structure, with a long hole (5011) arranged above and a T-shaped chute (5012) arranged along the length direction below. The sliding seat (502) is slidably arranged in the T-shaped chute (5012).

Images