A heating furnace for leaf spring processing

Abstract

The present invention relates to the field of leaf spring processing technology, specifically a heating furnace for leaf spring processing, including a heating furnace body, a support plate symmetrically distributed and fixed to the lower end surface of the heating furnace body, a base plate fixed to the bottom of the support plate, a feed port opened on the right side of the heating furnace body and a discharge port opened in the middle of the lower end surface of the heating furnace body, a heating chamber with a columnar structure is opened inside the heating furnace body, a heat-insulating door panel is hingedly fixed on the left side of the heating furnace body, and a clamping and fixing mechanism is rotatably connected inside the heating furnace body. The clamping and fixing mechanism is designed to cooperate with the drive motor transmission, so that the leaf spring raw material plate can be clamped and fixed during the heating process inside the heating chamber, and the stability during the heating process can be maintained, and the leaf spring raw material plate can be rotated during the rotation displacement process of the leaf spring raw material plate carried by the clamping and fixing mechanism, so that the heating chamber can heat all parts of the leaf spring raw material plate uniformly, thereby improving the heating efficiency and processing quality of the leaf spring raw material plate.

Description

Technical Field

[0001] The invention relates to the technical field of leaf spring processing, in particular to a heating furnace for leaf spring processing. Background Art

[0002] The automobile leaf spring is one of the main parts in the automobile suspension system, and plays the role of connecting the wheel and the frame. In addition to bearing the weight of the car and the load, it also has to bear the impact load and vibration caused by the uneven road surface. The leaf spring is mainly used as a shock-absorbing and energy-storing part. It must absorb a large amount of elastic work and not allow permanent deformation. In order to obtain the best ride quality and good handling stability of the car, the high strength and long service life of the leaf spring must be guaranteed, so the control of heat treatment is particularly important;

[0003] Leaf spring processing usually requires heating treatment in a heating furnace to change the mechanical properties and elastic modulus of the material. Common heating methods include resistance wire heating technology, gas heating and infrared heating. The temperature and time need to be controlled during leaf spring heating treatment to avoid damage to the material or performance degradation caused by overheating or over-insulation. The specific steps and parameters of the heating treatment should be determined according to the specific leaf spring material and processing requirements.

[0004] Although the existing leaf spring heating furnace can achieve heating treatment of leaf springs, the leaf spring heating furnace does not fix the leaf springs during the heating treatment process. Most leaf springs are directly placed on a conveying device, conveyed to the heating furnace by the conveying device, and moved and transported in the heating furnace. During the movement and transportation of the leaf springs, it is very easy to slip. The sliding of the leaf springs will cause adjacent leaf springs to be in close contact, which is not conducive to the subsequent uniform heating of the leaf spring body and affects the heating effect of the leaf spring.

[0005] For this purpose, a heating furnace for leaf spring processing is proposed. Summary of the invention

[0006] The object of the present invention is to provide a heating furnace for leaf spring processing. By designing a clamping and fixing mechanism in conjunction with a driving motor transmission, the leaf spring raw material plate can be clamped and fixed during the heating process inside a heating chamber to maintain stability during the heating process, and the leaf spring raw material plate can be rotated during the rotational displacement of the leaf spring raw material plate carried by the clamping and fixing mechanism, thereby achieving uniform heating of all parts of the leaf spring raw material plate by the heating chamber, improving the heating efficiency and processing quality of the leaf spring raw material plate, and solving the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heating furnace for leaf spring processing, comprising a heating furnace body, a support plate symmetrically distributed and fixed to the lower end surface of the heating furnace body, a base plate fixed to the bottom of the support plate, a feed port opened on the right side of the heating furnace body and a feed port opened in the middle of the lower end surface of the heating furnace body, a heating cavity with a columnar structure is opened inside the heating furnace body, a heat-insulating door panel is hingedly fixed on the left side of the heating furnace body, a clamping and fixing mechanism is rotatably connected inside the heating furnace body, a driving motor is fixed to the rear end surface of the heating furnace body, and the driving motor is transmission-connected to the clamping and fixing mechanism;

[0008] The clamping and fixing mechanism includes a front driving disk and a rear driving disk rotatably connected to the heating chamber, a transmission shaft is fixed through the middle of the front driving disk and the rear driving disk, both ends of the transmission shaft are rotatably connected to the front and rear inner walls of the heating chamber, and the output shaft of the driving motor is fixed to one end of the transmission shaft;

[0009] At least six groups of fixing members are arranged at corresponding positions on the outside of the front driving disc and the rear driving disc in an annular manner with equal distances, and leaf spring raw material plates are arranged between adjacent fixing members.

[0010] Specifically, the fixing part includes a supporting seat rotatably connected to the front driving disk and the rear driving disk, the upper end surface of the supporting seat is provided with a placement groove, and the longitudinal cross-section of the supporting seat is designed in an L-shaped structure, an insulating sleeve is fixed through the corresponding position of the outside of the front driving disk and the supporting seat, a connecting rod is provided at one end of the insulating sleeve, one end of the connecting rod extends into the insulating sleeve and is laterally slidably connected to the insulating sleeve, a shell of a hemispherical structure is fixed to the other end of the connecting rod, a ball is rotatably connected inside the shell, a passive extrusion ring is fixed in the heating chamber at a corresponding position to the ball, and the passive extrusion ring is designed to be inclined, a roller is sleeved on the outside of the connecting rod, the outer surface of the roller is in close contact with the inner wall of the heating chamber, transverse grooves are provided in an inner ring of the roller at equal distances, and a slider is slidably connected in the transverse groove, the slider is fixed to the connecting rod, and the sliding connection structure between the connecting rod and the insulating sleeve is the same as the sliding connection structure between the roller and the connecting rod.

[0011] Specifically, a spring is provided at one end of the connecting rod located inside the insulation sleeve, and an extrusion block is provided at one end of the insulation sleeve located inside the support seat. One end of the spring is fixed to the connecting rod, and the other end is fixed to the extrusion block. The upper end of the extrusion block is designed with an inclination angle, and a slide rail is provided between the bottom of the extrusion block and the support seat. The support seat is slidably connected to the extrusion block through the slide rail.

[0012] Specifically, a clamping plate is fixedly connected to the outside of the connecting rod, and one end of the clamping plate extends to the placement groove and is movably connected to the supporting seat.

[0013] Specifically, an arc-shaped high-temperature resistant cleaning steel wire plate is provided in the heating chamber, and the high-temperature resistant cleaning steel wire plate is fixed to the inner wall of the insulation door panel located in the heating chamber. A discharge port is provided on the lower end face of the heating furnace body, and the position of the discharge port corresponds to the high-temperature resistant cleaning steel wire plate and is connected with the interior of the heating chamber. A collection bin is screwed to the lower end face of the heating furnace body at the corresponding position of the discharge port, and the collection bin is connected with the discharge port.

[0014] Specifically, a conveying device is fixed on the upper end surface of the base plate, which is used to convey the leaf spring raw material plate discharged from the discharge port at the lower end of the heating furnace body.

[0015] Specifically, adjacent surfaces of the front drive disc and the rear drive disc are screwed to support seat 2, and the structure of support seat 2 is the same as that of support seat 1. A medium-frequency heating component is embedded inside support seat 2.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present application designs a clamping and fixing mechanism to cooperate with the driving motor transmission, so that the leaf spring raw material plate can be clamped and fixed during the heating process inside the heating chamber, and the stability during the heating process can be maintained. In addition, the leaf spring raw material plate can be rotated during the rotation displacement process of the leaf spring raw material plate carried by the clamping and fixing mechanism, so that the heating chamber can heat all parts of the leaf spring raw material plate uniformly, thereby improving the heating efficiency and processing quality of the leaf spring raw material plate;

[0018] 2. This application designs a material collection bin, a heat-insulating door panel, and a high-temperature-resistant cleaning steel wire panel, so that the surface cracked iron filings can be cleaned during the leaf spring rotary uniform heating process, reducing the difficulty of subsequent processing and preventing a large amount of subsequent iron filings from falling and affecting the processing environment. At the same time, the cleaned iron filings are centrally stored for easy processing by users, and the design of the heat-insulating door panel also makes it easy for users to open the heating furnace body and expose the internal heating chamber for maintenance of internal parts;

[0019] 3. Based on the clamping and fixing mechanism, the present application also designs another supporting seat 2. Compared with the supporting seat 1, the user can cancel the roller structure, and fix the supporting seat 1 to the driving disk with screws, cancel the operation of the heating component in the heating furnace body, and use the medium frequency heating component in the supporting seat 2 to heat the two ends of the leaf spring raw material plate, which is convenient for the subsequent ear rolling of the leaf spring raw material plate, realizing the characteristics of one machine with multiple uses and multi-functions. In addition, the device designed in the present application has a small overall size and a low space occupancy rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is the overall structural view of the present invention;

[0022] Figure 2 It is a rear view of the overall structure of the present invention;

[0023] Figure 3 It is a partial cross-sectional view of the heating chamber and the clamping and fixing mechanism of the present invention;

[0024] Figure 4 It is a structural view of the clamping and fixing mechanism and the leaf spring raw material plate of the present invention;

[0025] Figure 5 It is a combined view of the heating chamber and the clamping and fixing mechanism of the present invention;

[0026] Figure 6 is a cross-sectional view of a heating furnace body of the present invention;

[0027] Figure 7 A structural view of a fixing member of the present invention;

[0028] Figure 8 It is a structural view of the roller and the connecting rod of the present invention;

[0029] Fig. 9 It is a cross-sectional structural view of the supporting seat 2 and the front driving plate of the present invention;

[0030] Fig.10 It is a structural view of a supporting seat 1 of the present invention.

[0031] Description of reference numerals:

[0032] 1. Heating furnace body; 11. Support plate; 12. Feed inlet; 13. Base plate; 14. Insulated door plate; 15. Heating chamber; 16. Feeding port; 17. Discharging port; 18. High temperature resistant cleaning wire plate; 2. Aggregate bin; 3. Conveying device; 4. Driving motor; 5. Clamping and fixing mechanism; 51. Rear driving disc; 52. Transmission shaft; 53. Fixing part; 54. Passive extrusion ring; 55. Front driving disc; 531. Roller; 530. Insulating sleeve; 532. Ball; 533. Shell; 534. Connecting rod; 535. Clamping plate; 536. Support seat 1; 537. Extrusion block; 538. Spring; 539. Slide rail; 5311. Horizontal groove; 5341. Sliding block; 6. Leaf spring raw material plate; 7. Support seat 2; 8. Medium frequency heating component. DETAILED DESCRIPTION

[0033] 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.

[0034] See also Figures 1 to 10 , the present invention provides a technical solution:

[0035] A heating furnace for leaf spring processing, comprising a heating furnace body 1, a support plate 11 symmetrically distributed and fixed to the lower end surface of the heating furnace body 1, a base plate 13 fixed to the bottom of the support plate 11, a feed port 12 opened on the right side of the heating furnace body 1 and a feed port 16 opened in the middle of the lower end surface of the heating furnace body 1, a heating chamber 15 of a columnar structure is opened inside the heating furnace body 1, a heat preservation door plate 14 is hingedly fixed on the left side of the heating furnace body 1, a clamping and fixing mechanism 5 is rotatably connected inside the heating furnace body 1, a driving motor 4 is fixed to the rear end surface of the heating furnace body 1, and the driving motor 4 is transmission-connected to the clamping and fixing mechanism 5;

[0036] The clamping and fixing mechanism 5 includes a front driving disk 55 and a rear driving disk 51 which are rotatably connected to the heating chamber 15. A transmission shaft 52 is fixed through the middle of the front driving disk 55 and the rear driving disk 51. Both ends of the transmission shaft 52 are rotatably connected to the front and rear inner walls of the heating chamber 15. The output shaft of the driving motor 4 is fixed to one end of the transmission shaft 52.

[0037] At least six groups of fixing members 53 are arranged at equal intervals in a circular manner at corresponding positions outside the front driving disc 55 and the rear driving disc 51 , and leaf spring raw material plates 6 are arranged between adjacent fixing members 53 .

[0038] By adopting the above technical scheme, during operation, the leaf spring raw material plate 6 is delivered into the heating furnace body 1 through the feed port 12 manually or by a robotic arm, and is clamped and fixed on the corresponding fixing parts 53 on the front driving disk 55 and the rear driving disk 51 in the clamping and fixing mechanism 5. Then, the transmission shaft 52 is driven by the driving motor 4, and the front driving disk 55 and the rear driving disk 51 are further driven to carry the leaf spring raw material plate 6 on the fixing parts 53 to rotate counterclockwise in the heating chamber 15. The heating chamber 15 and the rotationally displaced leaf spring raw material plate 6 in the heating chamber 15 are heated by the heating component in the heating furnace body 1.

[0039] Specifically, if Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the fixing member 53 includes a supporting seat 536 which is rotatably connected to the front driving plate 55 and the rear driving plate 51. A placement groove is provided on the upper end surface of the supporting seat 536, and the longitudinal section of the supporting seat 536 is designed in an L-shaped structure. A heat insulating sleeve 530 is fixed through the corresponding position of the outer side of the front driving plate 55 and the supporting seat 536. A connecting rod 534 is provided at one end of the heat insulating sleeve 530. One end of the connecting rod 534 extends into the heat insulating sleeve 530 and is slidably connected to the heat insulating sleeve 530 transversely. A shell 533 of a hemispherical structure is fixed to the other end of the connecting rod 534. The inner rotation of the shell 533 A ball 532 is connected, and a passive extrusion ring 54 is fixed at a position corresponding to the ball 532 in the heating chamber 15, and the passive extrusion ring 54 is designed to be inclined. A roller 531 is sleeved on the outside of the connecting rod 534, and the outer surface of the roller 531 is in close contact with the inner wall of the heating chamber 15. Transverse grooves 5311 are equidistantly arranged in an annular shape inside the roller 531, and a slider 5341 is slidably connected in the transverse groove 5311. The slider 5341 is fixed to the connecting rod 534, and the sliding connection structure between the connecting rod 534 and the insulation sleeve 53) is the same as the sliding connection structure between the roller 531 and the connecting rod 534.

[0040] By adopting the above technical solution, when the leaf spring to be processed is delivered into the interior of the heating furnace body 1 through the feed port 12 manually or by a robot arm, firstly, the two ends of the leaf spring raw material plate 6 correspond to the openings of the placement slots on the support seat 536 in the fixing member 53, and then the leaf spring raw material plate 6 is pushed, and the two ends of the leaf spring raw material plate 6 are inserted into the placement slots for preliminary fixing, and then the driving motor 4 drives the transmission shaft 52, driving the front driving disk 55 and the rear driving disk 51 to carry the leaf spring raw material plate 6 in the heating chamber 15. During the counterclockwise rotation, the roller 531 is in contact with the inner wall of the heating chamber 15, so when the leaf spring raw material plate 6 rotates counterclockwise in the heating chamber 15, the roller 531 is in contact with the inner wall of the heating chamber 15, and the roller 531 rotates clockwise. The rotation of the roller 531 drives the connecting rod 534 running through the inside to rotate, and the connecting rod 534 further drives the insulation sleeve 530 to rotate. At this time, the supporting seat 536 fixed to the insulation sleeve 530 rotates, and the leaf spring raw material plate 6 placed in the groove fixed on the supporting seat 536 rotates at a uniform speed. During the process of heating the heating chamber 15 and the leaf spring raw material plate 6 by the heating component inside the heating furnace body 1, the leaf spring raw material plate 6 is further heated evenly, thereby improving the heating uniformity of the leaf spring raw material 6 and increasing the stability of the heating and moving process of the leaf spring raw material 6.

[0041] Specifically, if Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a spring 538 is provided at one end of the connecting rod 534 located inside the insulation sleeve 530, and an extrusion block 537 is provided at one end of the insulation sleeve 530 located inside the support seat 536, and one end of the spring 538 is fixed to the connecting rod 534, and the other end is fixed to the extrusion block 537, the upper end of the extrusion block 537 is designed with an inclined angle, and a slide rail 539 is provided between the bottom of the extrusion block 537 and the support seat 536, the support seat 536 is slidably connected to the extrusion block 537 through the slide rail 539, and the outside of the connecting rod 534 is fixedly connected with a snap plate 535, and one end of the snap plate 535 extends to the placement groove and is movably connected to the support seat 536.

[0042] By adopting the above technical scheme, in order to ensure the initial stability of the leaf spring raw material plate 6 when placed in the placement groove on the support seat 536, the present application designs a spring 538 and other structures to address this problem. When the leaf spring raw material plate 6 is initially placed in the placement groove, the extrusion block 537 will be squeezed to one side by the inclined surface of the extrusion block 537 to displace the extrusion block 537 in the placement groove. The extrusion block 537 is stably displaced in the placement groove through the slide rail 539 and compresses the spring 538. The elastic force of the spring 538 is used in conjunction with the extrusion block 537 to initially squeeze and fix one end of the leaf spring raw material plate 6 in the placement groove. Subsequently, during the counterclockwise rotation and displacement of the front drive disk 55 and the rear drive disk 51, the fixing member 53 is displaced together. At this time, the ball 532 in contact with the passive extrusion ring 54 is displaced under the action of the inclined surface of the passive extrusion block 537, further driving the connecting rod 534 to displace, further compressing the inside of the insulation sleeve 530. The spring 538 increases the elastic force of the spring 538, and cooperates with the extrusion block 537 to further elastically squeeze and fix one end of the leaf spring raw material plate 6. Due to the displacement of the connecting rod 534, the roller 531 sleeved on the connecting rod 534 is displaced along with the connecting rod 534, which will cause frequent friction between the roller 531 and the inside of the heating chamber 15, resulting in damage to the roller 531. Therefore, the present application designs a sliding connection structure of the slider 5341 and the transverse groove 5311 to achieve that the displacement of the connecting rod 534 will not drive the displacement of the roller 531, and will not affect the rotation of the roller 531 to drive the rotation of the connecting rod 534. In the process of the displacement of the connecting rod 534, the clamping plate 535 will be further driven to move. The displacement of the clamping plate 535 blocks the opening on the placement slot, thereby preventing the subsequent leaf spring raw material plate 6 from accidentally falling when the rotation displacement angle changes in the heating chamber 15.

[0043] In addition, the structure of the roller 531 and the shell 533 ensures that the rotation direction of the connecting rod 534 and the rolling direction of the roller 531 and the passive extrusion ring 54 do not affect each other. Later, when the ball 532 breaks away from the passive extrusion ring 54 and reaches the discharge port 16, it is elastically reset under the action of the spring 538, and the connecting rod 534 moves in the opposite direction, and the locking plate 535 breaks away from the placement groove opening. Then, under the action of the vertical angle, the heated leaf spring raw material plate 6 smoothly breaks away from the fixing part 53 and is discharged from the heating furnace body 1 from the discharge port 16. If the user is worried that the contact transmission force between the roller 531 and the heating chamber 15 is insufficient, the user can also replace the roller 531 with a gear and add a gear ring that meshes with the gear.

[0044] Specifically, if Figure 1 and Figure 6As shown, an arc-shaped high-temperature resistant cleaning steel wire plate 18 is provided in the heating chamber 15, and the high-temperature resistant cleaning steel wire plate 18 is fixed to the inner wall of the heat-insulating door panel 14 located in the heating chamber 15, and a discharge port 17 is provided on the lower end surface of the heating furnace body 1, and the position of the discharge port 17 corresponds to the high-temperature resistant cleaning steel wire plate 18 and is connected with the interior of the heating chamber 15, a collection bin 2 is screwed to a position corresponding to the lower end surface of the heating furnace body 1 and the discharge port 17, and the collection bin 2 is connected with the discharge port 17, and a conveying device 3 is fixed on the upper end surface of the base plate 13, which is used for conveying the leaf spring raw material plate 6 discharged from the discharge port 16 at the lower end of the heating furnace body 1.

[0045] By adopting the above-mentioned technical scheme, when the leaf spring raw material plate 6 is rotating and uniformly heated, the leaf spring raw material plate 6 will contact with the arc-shaped high-temperature resistant cleaning steel wire plate 18. After heating, the surface of the leaf spring raw material plate 6 will crack and produce a large amount of metal iron filings. If the metal iron filings are not cleaned, they will fall on the surface of the relevant processing table during the subsequent processing, seriously affecting the processing environment of the relevant workbench. Therefore, the present application designs this structure to clean the cracked iron filings on the surface of the leaf spring raw material plate 6 in advance, reduce the number of subsequent iron filings falling, and collect the iron filings in the collection bin 2 for the convenience of subsequent processing by the user. At the same time, the design of the thermal insulation door panel 14 also makes it convenient for the user to open the heating furnace body 1 and maintain the internal structure of the heating furnace body 1. The leaf spring raw material 6 that then falls on the conveying device 3 is transported to the next processing equipment by the conveying device for the next deep processing.

[0046] As another embodiment of the present invention, the adjacent surfaces of the front driving disk 55 and the rear driving disk 51 are screwed to a supporting seat 2 7, and the supporting seat 2 7 has the same structure as the supporting seat 1 536, and the interior of the supporting seat 2 7 is embedded with a medium frequency heating component 8.

[0047] By adopting the above-mentioned technical scheme, the present application designs another support seat 2 7 structure. The present application formed by the support seat 1 536 structure is suitable for the overall heating of the leaf spring raw material plate 6. However, in the actual production process, in addition to the overall heating of the leaf spring for subsequent oil quenching, there are also operations of heating and curling ears at both ends. Therefore, by replacing the support seat 2 7 with the support seat 1 536 and canceling the roller 531 structure, it is possible to achieve batch heating treatment of the two ends of the leaf spring raw material through the medium frequency heating component 8 to facilitate the subsequent ear curling operation. During this process, the operation of the heating component in the heating furnace body 1 is stopped.

[0048] Working principle: During operation, the leaf spring raw material plate 6 is delivered into the heating furnace body 1 through the feed port 12 manually or by a mechanical arm, and is clamped and fixed on the corresponding fixing parts 53 on the front driving disk 55 and the rear driving disk 51 in the clamping and fixing mechanism 5. Then, the transmission shaft 52 is driven by the driving motor 4, and the front driving disk 55 and the rear driving disk 51 are further driven to carry the leaf spring raw material plate 6 on the fixing parts 53 to rotate counterclockwise in the heating chamber 15. The heating assembly in the heating furnace body 1 heats the heating chamber 15 and the leaf spring raw material plate 6 that is rotated and displaced in the heating chamber 15.

[0049] First, the two ends of the leaf spring raw material plate 6 correspond to the openings of the placement slots on the support seat 536 in the fixing member 53, and then the leaf spring raw material plate 6 is pushed, and the two ends of the leaf spring raw material plate 6 are inserted into the placement slots for preliminary fixing, and then the driving motor 4 drives the transmission shaft 52, and drives the front driving disk 55 and the rear driving disk 51 to carry the leaf spring raw material plate 6 in the heating chamber 15. During the counterclockwise rotation, the roller 531 is in contact with the inner wall of the heating chamber 15. Therefore, when the leaf spring raw material plate 6 rotates counterclockwise in the heating chamber 15, the roller 531 is in contact with the inner wall of the heating chamber 15, and the roller 531 is actually Now rotate clockwise, the roller 531 rotates and drives the connecting rod 534 running through the inside to rotate, and the connecting rod 534 further drives the insulation sleeve 530 to rotate. At this time, the supporting seat 536 fixed to the insulation sleeve 530 rotates, and the leaf spring raw material plate 6 placed in the groove fixed on the supporting seat 536 rotates at a uniform speed. During the process of heating the heating cavity 15 and the leaf spring raw material plate 6 by the heating component inside the heating furnace body 1, the leaf spring raw material plate 6 is further heated evenly, thereby improving the heating uniformity of the leaf spring raw material 6 and increasing the stability of the heating and moving process of the leaf spring raw material 6.

[0050] In order to ensure the initial stability of the leaf spring raw material plate 6 when placed in the placement groove on the support seat 536, the present application has designed a spring 538 and other structures to address this problem. When the leaf spring raw material plate 6 is initially placed in the placement groove, the extrusion block 537 will be squeezed to one side by the inclined surface of the extrusion block 537 to displace the extrusion block 537 in the placement groove. The extrusion block 537 is stably displaced in the placement groove through the slide rail 539 and compresses the spring 538. The elastic force of the spring 538 is used in conjunction with the extrusion block 537 to initially squeeze and fix one end of the leaf spring raw material plate 6 in the placement groove. Subsequently, during the counterclockwise rotation and displacement of the front drive disk 55 and the rear drive disk 51, the fixing member 53 is displaced together. At this time, the ball 532 in contact with the passive extrusion ring 54 is displaced under the action of the inclined surface of the passive extrusion block 537, further driving the connecting rod 534 to displace, and further compressing the spring 538 inside the heat insulation sleeve 530. , increasing the elastic force of the spring 538, cooperating with the extrusion block 537 to further elastically squeeze and fix one end of the leaf spring raw material plate 6. Due to the displacement of the connecting rod 534, the roller 531 sleeved on the connecting rod 534 moves together with the connecting rod 534, which will cause frequent friction between the roller 531 and the inside of the heating chamber 15, resulting in damage to the roller 531. Therefore, the present application designs a sliding connection structure of the slider 5341 and the transverse groove 5311 to achieve that the displacement of the connecting rod 534 will not drive the displacement of the roller 531, and will not affect the rotation of the roller 531 to drive the rotation of the connecting rod 534. In the process of the displacement of the connecting rod 534, the clamping plate 535 will be further driven to move. The displacement of the clamping plate 535 blocks the opening on the placement slot, thereby avoiding the problem of accidental falling of the subsequent leaf spring raw material plate 6 when the rotation displacement angle changes in the heating chamber 15.

[0051] In addition, the structure of the roller 531 and the shell 533 ensures that the rotation direction of the connecting rod 534 and the rolling direction of the roller 531 and the passive extrusion ring 54 do not affect each other. Later, when the ball 532 breaks away from the passive extrusion ring 54 and reaches the discharge port 16, it is elastically reset under the action of the spring 538, and the connecting rod 534 moves in the opposite direction, and the locking plate 535 breaks away from the placement groove opening. Then, under the action of the vertical angle, the heated leaf spring raw material plate 6 smoothly breaks away from the fixing part 53 and is discharged from the heating furnace body 1 from the discharge port 16. If the user is worried that the contact transmission force between the roller 531 and the heating chamber 15 is insufficient, the user can also replace the roller 531 with a gear and add a gear ring that meshes with the gear.

[0052] When the leaf spring raw material plate 6 is rotating and evenly heated, the leaf spring raw material plate 6 will contact the high-temperature resistant cleaning steel wire plate 18 of the arc structure. After heating, the surface of the leaf spring raw material plate 6 will crack and produce a large amount of metal iron filings. If the metal iron filings are not cleaned, they will fall on the surface of the relevant processing table during the subsequent processing, seriously affecting the processing environment of the relevant workbench. Therefore, the present application designs this structure to clean the cracked iron filings on the surface of the leaf spring raw material plate 6 in advance, reduce the number of subsequent iron filings falling, and collect the iron filings in the collection bin 2 for the convenience of subsequent processing by the user. At the same time, the design of the thermal insulation door panel 14 also makes it convenient for the user to open the heating furnace body 1 and maintain the internal structure of the heating furnace body 1. The leaf spring raw material parts 6 that then fall on the conveying device 3 are transported to the next processing equipment by the conveying device for the next deep processing.

[0053] The present application designs another support seat 2 7 structure. The support seat 1 536 structure formed in the present application is suitable for the overall heating of the leaf spring raw material plate 6. However, in the actual production process, in addition to the overall heating of the leaf spring for subsequent oil quenching, there are also operations of heating and curling ears at both ends. Therefore, by replacing the support seat 2 7 with the support seat 1 536 and canceling the roller 531 structure, it is possible to achieve batch heating treatment of the two ends of the leaf spring raw material through the medium frequency heating component 8 to facilitate the subsequent ear curling operation. During this process, the operation of the heating component in the heating furnace body 1 is stopped.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heating furnace for processing leaf springs, comprising a heating furnace body (1), a support plate (11) symmetrically distributed and fixed to the lower end surface of the heating furnace body (1), a base plate (13) fixed to the bottom of the support plate (11), a feed port (12) provided on the right side of the heating furnace body (1) and a discharge port (16) provided in the middle of the lower end surface of the heating furnace body (1), characterized in that: A heating chamber (15) of a columnar structure is provided inside the heating furnace body (1); a heat-insulating door panel (14) is hingedly fixed to the left side of the heating furnace body (1); a clamping and fixing mechanism (5) is rotatably connected inside the heating furnace body (1); a driving motor (4) is fixed to the rear end surface of the heating furnace body (1), and the driving motor (4) is transmission-connected to the clamping and fixing mechanism (5); The clamping and fixing mechanism (5) comprises a front driving disk (55) and a rear driving disk (51) which are rotatably connected to the heating chamber (15); a transmission shaft (52) is fixedly passed through the middle of the front driving disk (55) and the rear driving disk (51); both ends of the transmission shaft (52) are rotatably connected to the front and rear inner walls of the heating chamber (15); and an output shaft of the driving motor (4) is fixed to one end of the transmission shaft (52); At least six groups of fixing members (53) are arranged at equal distances in a ring at corresponding positions outside the front driving disc (55) and the rear driving disc (51), and leaf spring raw material plates (6) are arranged between adjacent fixing members (53); The fixing member (53) comprises a supporting seat (536) rotatably connected to the front drive disc (55) and the rear drive disc (51); a placement groove is provided on the upper end surface of the supporting seat (536); and the longitudinal cross-section of the supporting seat (536) is designed to be L-shaped; a heat insulating sleeve (530) is fixedly passed through the outer portion of the front drive disc (55) at a position corresponding to the supporting seat (536); A connecting rod (534) is provided at one end of the heat insulating sleeve (530), one end of the connecting rod (534) extends into the heat insulating sleeve (530) and is laterally slidably connected to the heat insulating sleeve (530), a shell (533) of a hemispherical structure is fixed to the other end of the connecting rod (534), a ball (532) is rotatably connected inside the shell (533), a passive extrusion ring (54) is fixed at a position corresponding to the ball (532) in the heating chamber (15), and the passive extrusion ring (54) is designed to be inclined, a roller (531) is sleeved on the outside of the connecting rod (534), and the outer surface of the roller (531) is in close contact with the inner wall of the heating chamber (15); The roller (531) is provided with transverse grooves (5311) at equal intervals in an annular shape inside the roller (531), and a sliding block (5341) is slidably connected in the transverse groove (5311), the sliding block (5341) is fixed to the connecting rod (534), and the sliding connection structure between the connecting rod (534) and the heat insulation sleeve (530) is the same as the sliding connection structure between the roller (531) and the connecting rod (534); A spring (538) is provided at one end of a connecting rod (534) located inside the heat-insulating sleeve (530), and an extrusion block (537) is provided at one end of the heat-insulating sleeve (530) located inside the supporting seat (536). One end of the spring (538) is fixed to the connecting rod (534), and the other end is fixed to the extrusion block (537). The upper end of the extrusion block (537) is designed with an inclined angle, and a slide rail (539) is provided between the bottom of the extrusion block (537) and the supporting seat (536). The supporting seat (536) is slidably connected to the extrusion block (537) via the slide rail (539); The outside of the connecting rod (534) is fixedly connected to a clamping plate (535), and one end of the clamping plate (535) extends to the placement groove and is movably connected to a supporting seat (536).

2. A heating furnace for leaf spring processing according to claim 1, characterized in that: A high-temperature cleaning steel wire plate (18) with an arc-shaped structure is arranged in the heating chamber (15), and the high-temperature cleaning steel wire plate (18) is fixed to the inner wall of the heat-insulating door plate (14) located in the heating chamber (15); a discharge port (17) is provided on the lower end surface of the heating furnace body (1), and the position of the discharge port (17) corresponds to the high-temperature cleaning steel wire plate (18) and is connected to the interior of the heating chamber (15); a collection bin (2) is screwed to a position corresponding to the discharge port (17) on the lower end surface of the heating furnace body (1), and the collection bin (2) is connected to the discharge port (17).

3. A heating furnace for leaf spring processing according to claim 2, characterized in that: A conveying device (3) is fixed to the upper end surface of the base plate (13) for conveying the leaf spring raw material plate (6) discharged from the discharge port (16) at the lower end of the heating furnace body (1).

4. A heating furnace for leaf spring processing according to claim 3, characterized in that: The adjacent surfaces of the front drive disc (55) and the rear drive disc (51) are screw-connected with a second support seat (7), and the second support seat (7) has the same structure as the first support seat (536), and a medium-frequency heating component (8) is embedded inside the second support seat (7).

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