A heat treatment framing method for a universal joint cross shaft

Abstract

The present invention relates to the technical field of vehicle parts processing, and in particular, to a method for heat treatment and framing of a universal joint cross shaft and a heat treatment tool. The method for heat treatment and framing of a universal joint cross shaft comprises step S10, controlling the lifting assembly to rise to a first position; step S20, placing a universal joint cross shaft into a material frame assembly; step S30, when the number of universal joint cross shafts placed reaches a preset number, controlling the lifting assembly to descend to a preset height; step S40, re-accumulating the number of universal joint cross shafts placed; step S50, looping step S30 to step S40 until the lifting assembly descends to a second position; step S60, controlling the first lifting plate and the second lifting plate to rotate around the vertical axis to preset angles respectively; step S70, looping step S30 to step S40 until the lifting assembly descends to a third position. In this way, the problem that the universal joint cross shaft is inconvenient to frame and easy to collapse is solved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle parts processing, and in particular to a heat treatment framing method for a universal joint cross shaft and a heat treatment tool. Background Art

[0002] Universal joints are parts that realize variable angle power transmission and can be used in positions where the direction of the transmission axis needs to be changed. There are many types of universal joints, the most common of which is the cross-axis universal joint, which is a non-constant speed universal joint. It can generally be used in various fields such as automotive power transmission systems, military equipment, tools, etc. The cross-axis universal joint can be composed of two U-shaped shaft forks and a cross-axis bearing outer ring. The two U-shaped shaft forks can be connected together by a cross shaft. When the shaft at either end rotates, the other shaft will be driven to rotate. At the same time, due to the presence of the bearing, the cross-axis universal joint can swing around the center of the cross shaft to a certain angle, thereby realizing variable angle power transmission. The cross-axis universal joint has a large transmission angle and can adapt to large transmission angle changes. It also has the advantages of simple structure, easy manufacturing, low cost, and long service life. Among them, the role of the universal joint cross shaft is crucial. It not only has a transmission function, but also has the functions of positioning and support. Therefore, the production quality of the universal joint cross shaft is very critical. In current production, multiple universal joint cross shafts are usually stacked vertically in a frame and then heat treated.

[0003] However, when the cross shaft that needs to be heat treated is placed in the frame, it is not convenient to frame the universal joint cross shaft because the frame has a certain depth. In addition, the cross shafts in the frame are stacked vertically, and the vertically arranged cross shafts are a group. There are multiple groups of universal joint cross shafts stacked in the frame. Universal joint cross shafts that are stacked higher are prone to collapse. Summary of the invention

[0004] In order to solve the problem that the universal joint cross shaft is inconvenient to frame and easily collapses, the present invention provides a universal joint cross shaft heat treatment frame installation method and heat treatment tooling.

[0005] In a first aspect, the present invention provides a method for heat treating and framing a universal joint cross shaft, comprising:

[0006] Step S10, based on the completion of positioning of the material frame assembly and the lifting assembly, controlling the lifting assembly to rise to a first position; the lifting assembly comprises a first lifting plate and a second lifting plate; the first lifting plate and the second lifting plate are located in the material frame assembly;

[0007] Step S20, based on the lifting assembly being located at the first position, placing a universal joint cross shaft into the material frame assembly, and accumulating the number of the universal joint cross shafts placed; wherein the universal joint cross shafts in the material frame assembly are accumulated above the first lifting plate and the second lifting plate;

[0008] Step S30, based on the number of the universal joint cross shafts being delivered reaching a preset number, controlling the lifting assembly to descend to a preset height;

[0009] Step S40, based on the descending height of the lifting assembly reaching a preset height, re-accumulating the number of drops of the universal joint cross axis;

[0010] Step S50, looping the steps S30 to S40 until the lifting assembly descends to the second position;

[0011] Step S60, based on the lifting assembly being located at the second position, controlling the first lifting plate and the second lifting plate to rotate to a preset angle around the vertical axis respectively, and controlling the upper surface of the first lifting plate to partially fit with the lower surface of the second lifting plate; wherein, during the rotation of the first lifting plate and the second lifting plate, the anti-falling rod remains stationary, and the anti-falling rod has a plurality of anti-falling rods and is distributed in an array in the material frame assembly; the universal joint cross shafts stacked vertically form a group, and the anti-falling rod is inserted between two adjacent groups of the universal joint cross shafts;

[0012] Step S70, based on the first lifting plate and the second lifting plate rotating to a preset angle, looping the steps S30 to S40 until the lifting assembly descends to a third position.

[0013] In some embodiments, in step S80, based on the lifting assembly being located at the third position, the first lifting plate and the second lifting plate are controlled to move horizontally until the first lifting plate and the second lifting plate are separated from the material frame assembly.

[0014] In some embodiments, in step S81, based on the lifting assembly being located at the third position, controlling the first lifting plate to move horizontally until the first lifting plate is separated from the material frame assembly;

[0015] Step S82, based on the first lifting plate being separated from the material frame assembly, controlling the second lifting plate to move horizontally until the second lifting plate is separated from the material frame assembly.

[0016] In some embodiments, the first lifting plate has a first side and a second side opposite to each other; the second lifting plate has a third side and a fourth side opposite to each other; the second side and the third side are arranged close to each other; when the first side and the fourth side are parallel to each other, an angle is formed between the second side and the third side;

[0017] In the step S60, during the process of controlling the first lifting plate and the second lifting plate to rotate around the vertical axis respectively, the angle between the second side and the third side gradually decreases.

[0018] In a second aspect, the present invention further provides a heat treatment tool for a universal joint cross shaft, comprising:

[0019] A material frame assembly, the material frame assembly comprising a bottom plate, a cover plate, a plurality of vertical poles and a plurality of anti-falling poles; the vertical poles are detachably connected to the bottom plate; the vertical poles are detachably connected to the cover plate; the anti-falling poles are detachably connected to the bottom plate; the vertical poles are parallel to the anti-falling poles;

[0020] A lifting assembly, the lifting assembly comprising a first lifting plate, a second lifting plate and a driving unit, the first lifting plate and the second lifting plate are parallel to each other, and the first lifting plate and the second lifting plate are arranged in sequence along a first horizontal direction; the ends of the first lifting plate and the second lifting plate close to each other are both suspended; the ends of the first lifting plate and the second lifting plate far away from each other are respectively connected to the driving unit; a plurality of first giving way grooves are provided on the first lifting plate; the first giving way grooves penetrate to the end of the first lifting plate close to the second lifting plate; a plurality of second giving way grooves are provided on the second lifting plate, and the second giving way grooves penetrate to the end of the second lifting plate close to the first lifting plate;

[0021] Wherein, the heat treatment tooling for the universal joint cross shaft includes a first state and a second state;

[0022] The first state includes: the first lifting plate and the second lifting plate are located in the material frame assembly; part of the anti-falling rod is located in the first giving way groove, and the other part of the anti-falling rod is located in the second giving way groove;

[0023] The second state includes: the first lifting plate and the second lifting plate are located outside the material frame assembly.

[0024] In some embodiments, a length of the first lifting plate along the first horizontal direction is less than a length of the second lifting plate along the first horizontal direction.

[0025] In some embodiments, the first lifting plate has a first side and a second side that are opposite to each other; the second lifting plate has a third side and a fourth side that are opposite to each other; the second side and the third side are arranged close to each other; when the first side and the fourth side are parallel to each other, an angle is formed between the second side and the third side.

[0026] In some embodiments, the first side and the second side are parallel to each other; and the third side and the fourth side have an included angle.

[0027] In some embodiments, the anti-fall rod includes a rod body and a limit block; the rod body and the limit block are detachably connected; slots corresponding to the rod bodies are opened on the base plate; when the rod body is inserted into the corresponding slots, the limit block abuts against the upper surface of the base plate under the action of gravity.

[0028] In some embodiments, the bottom plate and the cover plate both have a mesh hollow structure.

[0029] In order to solve the problem that the universal joint cross shaft is inconvenient to frame and easy to collapse, the present invention has the following advantages:

[0030] The lifting assembly can be lifted and lowered according to the progress of framing. By raising the height of the first lifting plate and the second lifting plate in the material frame assembly, the universal joint cross shaft is placed on the first lifting plate and the second lifting plate, so that the depth of the universal joint cross shaft can be shallow, thereby improving the convenience of framing. According to the framing progress of the universal joint cross shaft, the lifting assembly is controlled to descend. Until the lifting assembly reaches the second position, at this time, the first lifting plate and the second lifting plate carry more universal joint cross shafts, and the first lifting plate and the second lifting plate are deep into the suspended part of the material frame assembly. There is a risk of being compressed and bent. In order to reduce this risk, the first lifting plate and the second lifting plate are controlled to rotate around the vertical axis to a preset angle respectively. The ends of the first lifting plate and the second lifting plate that are close to each other are vertically overlapped, thereby improving the compression and bending resistance of the ends of the first lifting plate and the second lifting plate that are close to each other, preventing the middle part from being damaged due to excessive bearing capacity, and thereby improving the service life of the lifting assembly.

[0031] The universal joint cross shafts stacked vertically are grouped together, and the anti-fall rods are inserted between two adjacent groups of universal joint cross shafts. The anti-fall rods can prevent the stacked universal joint cross shafts from collapsing. In the process of controlling the rotation of the first lifting plate and the second lifting plate, the cross shafts stacked in a messy vertical manner can also be vertically aligned to a certain extent by colliding with the anti-fall rods, thereby improving the neatness of the vertical stacking of the universal joint cross shafts, so that there are vertically penetrating gaps between two adjacent groups of universal joint cross shafts, improving the circulation effect of the hot air flow during the heat treatment process, and thus improving the heat treatment effect of the universal joint cross shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic flow chart of a method for heat treatment and framing of a universal joint cross shaft according to an embodiment is shown;

[0033] Figure 2 A top view of a heat treatment tooling according to an embodiment is shown;

[0034] Figure 3 A front view of a heat treatment tooling according to an embodiment is shown;

[0035] Figure 4 A top view of a lifting assembly of one embodiment is shown;

[0036] Figure 5 A top view of a lifting assembly after rotation of an embodiment is shown;

[0037] Figure 6 A top view of a base plate of one embodiment is shown;

[0038] Figure 7 A top view of a cover plate of one embodiment is shown;

[0039] Figure 8 A top view of a Cardan cross is shown according to one embodiment.

[0040] Figure numerals: material frame assembly 10; bottom plate 11; cover plate 12; vertical rod 13; anti-fall rod 14; rod body 141; limit block 142; lifting assembly 20; first lifting plate 21; second lifting plate 22; first make way groove 23; second make way groove 24; first make way opening 25; second make way opening 26; universal joint cross shaft 30. DETAILED DESCRIPTION

[0041] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0042] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0043] The cross-axis universal joint is a type of unequal velocity universal joint. It can be composed of a cross shaft connecting two universal joint forks, and the variable angle transmission of power is achieved through the cross shaft. The cross-axis universal joint can be widely used in fields such as automotive transmission systems, especially in some devices where the direction of the transmission axis needs to be changed. The cross-axis universal joint is one of the key components of the universal transmission device, and can be used in combination with the drive shaft to achieve flexible power transmission. The cross shaft is one of the key parts of the cross-axis universal joint. In the current production process, the universal joint cross shaft that needs to be heat treated is placed in the frame. However, when the cross shaft that needs to be heat treated is placed in the frame, it is inconvenient to frame the universal joint cross shaft because the frame has a certain depth. The cross shafts in the frame are stacked vertically, and the vertically arranged cross shafts are a group. There are multiple groups of universal joint cross shafts stacked in the frame. Universal joint cross shafts with higher stacking are prone to collapse. In order to solve the above problems, such as Figure 1As shown, the present invention provides a method for heat treatment and framing of a universal joint cross shaft.

[0044] In this embodiment, in step S10, before the heat treatment of multiple universal joint cross shafts 30 is required, the lifting assembly 20 can be controlled to rise to the first position based on the positioning of the material frame assembly 10 and the lifting assembly 20. The first position is the upper position from the top to the bottom of the material frame assembly 10, that is, the depth of the universal joint cross shaft 30 is shallow. The material frame assembly 10 can accommodate multiple universal joint cross shafts 30 that need to be heat treated, and the lifting assembly 20 can improve the convenience of framing the universal joint cross shaft 30. The lifting assembly 20 may include a first lifting plate 21 and a second lifting plate 22. The first lifting plate 21 and the second lifting plate 22 may be located in the material frame assembly 10. The lifting assembly 20 can be lifted and lowered in the material frame assembly 10, and the first lifting plate 21 and the second lifting plate 22 can be conveniently used to remove the material frame assembly 10 after the universal joint cross shaft 30 is placed.

[0045] Step S20, based on the lifting assembly 20 being located at the first position, the universal joint cross shaft 30 is put into the material frame assembly 10, and the number of universal joint cross shafts 30 put in is accumulated, so that the stacking height of the universal joint cross shaft 30 can be determined to prevent the accumulation and overflow of the universal joint cross shaft 30. Among them, the universal joint cross shaft 30 in the material frame assembly 10 is accumulated above the first lifting plate 21 and the second lifting plate 22. The first lifting plate 21 and the second lifting plate 22 can lift the put-in universal joint cross shaft 30 to prevent the accumulated universal joint cross shaft 30 from falling directly to the bottom, so that the first lifting plate 21 and the second lifting plate 22 are conducive to the placement of the universal joint cross shaft 30.

[0046] Step S30, based on the number of universal joint cross shafts 30 delivered reaching a preset number, the stacked universal joint cross shafts 30 have reached a certain height, and the lifting assembly 20 can be controlled to descend to the preset height. Thus, the position where the universal joint cross shaft 30 can be delivered is always at a higher position of the material frame assembly 10, thereby facilitating the delivery of the universal joint cross shaft 30.

[0047] In step S40, when the height of the lifting assembly 20 descends to a preset height, the accumulated number of universal joint cross shafts 30 is cleared, and the number of universal joint cross shafts 30 to be put in is accumulated again. In this way, the height of the lifting assembly 20 in the material frame assembly 10 can be adjusted according to the accumulated number of universal joint cross shafts 30, thereby preventing the accumulation and overflow of the universal joint cross shafts 30.

[0048] Step S50, looping steps S30 to S40 until the lifting assembly 20 descends to the second position.

[0049] Step S60, based on the lifting assembly 20 being located at the second position, the second position can be located at the middle position from the top to the bottom of the material frame assembly 10. That is, the number of universal joint cross shafts 30 put in is greater than half of the total number of universal joint cross shafts 30 to be put in. At this time, the lifting assembly 20 is subjected to a large bearing capacity, so the first lifting plate 21 and the second lifting plate 22 can be controlled to rotate around the vertical axis to a preset angle respectively, and the first lifting plate 21 and the second lifting plate 22 rotate in opposite directions. And control the upper surface of the first lifting plate 21 to partially fit the lower surface of the second lifting plate 22. Make the vertical projection part of the first lifting plate 21 and the second lifting plate 22 overlap to a certain extent, so that the strength of the overlapping part of the lifting assembly 20 can be improved. Thereby improving the compression bending resistance of the ends of the first lifting plate 21 and the second lifting plate 22 that are close to each other, thereby improving the service life. Among them, during the rotation of the first lifting plate 21 and the second lifting plate 22, the anti-falling rod 14 remains stationary, and the anti-falling rod 14 has multiple and arrayed distribution in the material frame assembly 10. The universal joint cross shafts 30 stacked vertically can be a group, and the anti-fall rod 14 can be inserted between two adjacent groups of universal joint cross shafts 30. The anti-fall rod 14 can make the stack of universal joint cross shafts 30 not easy to collapse. The rotation action of the first lifting plate 21 and the second lifting plate 22 can also allow the same group of unevenly aligned universal joint cross shafts 30 to touch the anti-fall rod 14 to achieve alignment, thereby reducing the possibility of collapse. And after the uniformity of the universal joint cross shaft 30 is improved, the universal joint cross shafts 30 in the same group can have a certain gap. Therefore, when the multiple universal joint cross shafts 30 are heat-treated, the circulation of airflow can be more orderly and smooth, thereby improving the heat treatment effect of the universal joint cross shaft 30.

[0050] Step S70, based on the first lifting plate 21 and the second lifting plate 22 rotating to a preset angle, looping steps S30 to S40 until the lifting assembly 20 descends to the third position, that is, the universal joint cross shaft 30 is assembled, so that the lifting assembly 20 can be subsequently operated.

[0051] In this embodiment, in step S80, based on the lifting assembly 20 being located at the third position and after the universal joint cross shaft 30 is assembled, the first lifting plate 21 and the second lifting plate 22 are controlled to move horizontally until the first lifting plate 21 and the second lifting plate 22 are separated from the material frame assembly 10. Due to the load-bearing weight limit in the heat treatment furnace, the lifting assembly 20 is pulled out from the material frame assembly 10, which can reduce the weight of the material frame assembly 10, thereby increasing the loading capacity of the universal joint cross shaft 30.

[0052] In this embodiment, step S80 of the method for heat treating and framing the universal joint cross shaft 30 may include step S81 and step S82.

[0053] In step S81 , based on the lifting assembly 20 being located at the third position, the first lifting plate 21 may be controlled to move horizontally until the first lifting plate 21 is separated from the material frame assembly 10 .

[0054] Step S82, based on the separation of the first lifting plate 21 from the material frame assembly 10, the second lifting plate 22 is controlled to move horizontally until the second lifting plate 22 separates from the material frame assembly 10. This is to prevent the first lifting plate 21 from generating resistance to the separation of the second lifting plate 22 after the first lifting plate 21 has separated, thereby making it easier for the second lifting plate 22 to separate.

[0055] In this embodiment, if Figure 4 As shown, the first lifting plate 21 has a first side L1 and a second side L2 that are opposite to each other. The second lifting plate 22 has a third side L3 and a fourth side L4 that are opposite to each other. The second side L2 and the third side L3 can be arranged close to each other. When the first side L1 and the fourth side L4 are parallel to each other, there is an angle between the second side L2 and the third side L3. This allows the first lifting plate 21 and the second lifting plate 22 to rotate, thereby increasing the strength of the first lifting plate 21 and the second lifting plate 22.

[0056] In step S60, if Figure 4 , Figure 5 As shown, in the process of controlling the first lifting plate 21 and the second lifting plate 22 to rotate around the vertical axis, the angle between the second side L2 and the third side L3 gradually decreases, and finally makes the angle approach parallel. As a result, the overlapping area of ​​the first lifting plate 21 and the second lifting plate 22 is more uniform, so that the stability of the first lifting plate 21 and the second lifting plate 22 can be higher when the load is heavy.

[0057] In this embodiment, the present invention discloses a heat treatment tool for a universal joint cross shaft 30, which can be used in any embodiment of the heat treatment framing method for the universal joint cross shaft 30, such as Figure 2 As shown, the heat treatment tooling for the universal joint cross shaft 30 may include a material frame assembly 10 and a lifting assembly 20 .

[0058] like Figure 3 , Figure 8As shown, the material frame assembly 10 may include a base plate 11, a cover plate 12, a plurality of vertical rods 13 and a plurality of anti-falling rods 14. The vertical rod 13 is detachably connected to the base plate 11, the vertical rod 13 is detachably connected to the cover plate 12, the anti-falling rod 14 is detachably connected to the base plate 11, and the vertical rod 13 is parallel to the anti-falling rod 14. The base plate 11 can support the universal joint cross shaft 30 that has been put in to prevent leakage of the universal joint cross shaft 30. The base plate 11 is subjected to a large bearing capacity, so the strength of the base plate 11 is also high. The cover plate 12 can be used to cover several universal joint cross shafts 30 after they are loaded. And the structure can be more stable when the universal joint cross shaft 30 is heat treated. The vertical rods 13 are evenly distributed around the base plate 11, and the vertical rods 13 are perpendicular to the base. For example, assuming that the base is rectangular, there are four vertical rods 13, which are respectively set up around the base. There are multiple anti-fall bars 14 distributed in an array in the material frame assembly 10. The vertically stacked universal joint cross shafts 30 are a group, and the anti-fall bars 14 are inserted between two adjacent groups of universal joint cross shafts 30 to prevent the stacked universal joint cross shafts 30 from collapsing.

[0059] like Figure 3 As shown, the lifting assembly 20 may include a first lifting plate 21, a second lifting plate 22 and a driving unit. The first lifting plate 21 may be parallel to the second lifting plate 22, and the first lifting plate 21 and the second lifting plate 22 are arranged in sequence along the first horizontal direction. The ends of the first lifting plate 21 and the second lifting plate 22 that are close to each other are both suspended, so that they have enough space to rotate, and when the bearing capacity is large, they are easy to detach from the material frame assembly 10. The ends of the first lifting plate 21 and the second lifting plate 22 that are far away from each other are respectively connected to the driving unit. A plurality of first clearance grooves 23 are provided on the first lifting plate 21, and the first clearance grooves 23 are connected to the end of the first lifting plate 21 close to the second lifting plate 22. A plurality of second clearance grooves 24 are provided on the second lifting plate 22, and the second clearance grooves 24 are connected to the end of the second lifting plate 22 close to the first lifting plate 21. The first clearance grooves 23 and the second clearance grooves 24 can be used to avoid the anti-falling rod 14, so that the first lifting plate 21 and the second lifting plate 22 can be installed in the material frame assembly 10.

[0060] The heat treatment tooling for the universal joint cross shaft 30 may include a first state and a second state.

[0061] The first state may include: the first lifting plate 21 and the second lifting plate 22 are located in the material frame assembly 10, a part of the anti-falling rod 14 is located in the first clearance groove 23, and another part of the anti-falling rod 14 is located in the second clearance groove 24. That is, the first lifting plate 21 and the second lifting plate 22 are located inside the material frame assembly 10 and have been positioned with the material frame assembly 10. Therefore, the universal joint cross shaft 30 can be dropped.

[0062] The second state may include: the first lifting plate 21 and the second lifting plate 22 are located outside the material frame assembly 10 . That is, a plurality of universal joint cross shafts 30 have been placed, and the first lifting plate 21 and the second lifting plate 22 have been separated from the material frame assembly 10 .

[0063] In this embodiment, the first give way groove 23 may be provided with a plurality of first give way openings 25, and the second give way groove 24 may be provided with a plurality of second give way openings 26. The plurality of first give way openings 25 are evenly distributed in the plurality of first give way grooves 23. The plurality of second give way openings 26 are evenly distributed in the plurality of second give way grooves 24. The diameters of the first give way openings 25 and the second give way openings 26 are respectively larger than the diameters of the first give way groove 23 and the second give way groove 24. The anti-falling rod 14 may correspond one-to-one with the first give way openings 25. The anti-falling rod 14 may correspond one-to-one with the second give way openings 26, so that the first lifting plate 21 and the second lifting plate 22 can be more convenient to rotate.

[0064] In this embodiment, if Figure 4 As shown, the length of the first lifting plate 21 along the first horizontal direction is less than the length of the second lifting plate 22 along the first horizontal direction. The length of the second lifting plate 22 along the horizontal direction is twice the length of the first lifting plate 21 along the horizontal direction. The first lifting plate 21 is located below the second lifting plate 22, and is subjected to a greater bearing force, making it easier to be damaged. Therefore, reducing the length of the first lifting plate 21 along the horizontal direction makes the first lifting plate 21 less likely to be damaged, thereby increasing the service life of the first lifting plate 21.

[0065] In this embodiment, if Figure 4 As shown, the first lifting plate 21 has a first side L1 and a second side L2 relative to each other. The second lifting plate 22 has a third side L3 and a fourth side L4 relative to each other. The second side L2 and the third side L3 are arranged close to each other. When the first side L1 and the fourth side L4 are parallel to each other, there is an angle between the second side L2 and the third side L3. Since the length of the first lifting plate 21 along the horizontal direction is short, the second side L2 is not conducive to processing, so that the first side L1 and the second side L2 can be parallel. The length of the second lifting plate 22 along the horizontal direction is long, so that the third side L3 is easier to process. Finally, the first lifting plate 21 and the second lifting plate 22 have a certain rotatable angle, so that the first lifting plate 21 and the second lifting plate 22 can have a part of overlap, so that when the load is large, the stability of the first lifting plate 21 and the second lifting plate 22 can be higher.

[0066] In this embodiment, if Figure 4As shown, the first side L1 and the second side L2 are parallel to each other. The third side L3 and the fourth side L4 have an angle. Since the first lifting plate 21 is short in the horizontal direction, it is not conducive to processing, and the first lifting plate 21 is rectangular. The second lifting plate 22 is longer in the horizontal direction and more convenient to process, so the third side L3 of the second lifting plate 22 has a certain angle. In this way, only the second lifting plate 22 needs to be processed, thereby reducing the production cost.

[0067] In this embodiment, if Figure 3 As shown, the anti-fall bar 14 may include a rod body 141 and a stopper 142. The rod body 141 and the stopper 142 are detachably connected, and a slot corresponding to the rod body 141 is provided on the bottom plate 11. When the rod body 141 is inserted into the corresponding slot, the stopper 142 abuts against the upper surface of the bottom plate 11 under the action of gravity. The stopper 142 can position the rod body 141 and make the anti-fall bar 14 more stable.

[0068] In this embodiment, if Figure 6 , Figure 7 As shown, the bottom plate 11 and the cover plate 12 are both in a mesh hollow structure. This can increase the contact area with the hot air flow after the universal joint cross shaft 30 is framed, thereby improving the quality of heat treatment.

[0069] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. A method for heat treatment and framing of a universal joint cross shaft, characterized in that: The heat treatment framing method of the universal joint cross shaft comprises: Step S10, based on the completion of positioning of the material frame assembly and the lifting assembly, controlling the lifting assembly to rise to a first position; the lifting assembly comprises a first lifting plate and a second lifting plate; the first lifting plate and the second lifting plate are located in the material frame assembly; Step S20, based on the lifting assembly being located at the first position, placing a universal joint cross shaft into the material frame assembly, and accumulating the number of the universal joint cross shafts placed; wherein the universal joint cross shafts in the material frame assembly are accumulated above the first lifting plate and the second lifting plate; Step S30, based on the number of the universal joint cross shafts being delivered reaching a preset number, controlling the lifting assembly to descend to a preset height; Step S40, based on the descending height of the lifting assembly reaching a preset height, re-accumulating the number of drops of the universal joint cross axis; Step S50, looping the steps S30 to S40 until the lifting assembly descends to the second position; Step S60, based on the lifting assembly being located at the second position, controlling the first lifting plate and the second lifting plate to rotate to a preset angle around the vertical axis respectively, and controlling the upper surface of the first lifting plate to partially fit with the lower surface of the second lifting plate; wherein, during the rotation of the first lifting plate and the second lifting plate, the anti-falling rod remains stationary, and the anti-falling rod has a plurality of anti-falling rods and is distributed in an array in the material frame assembly; the universal joint cross shafts stacked vertically form a group, and the anti-falling rod is inserted between two adjacent groups of the universal joint cross shafts; Step S70, based on the first lifting plate and the second lifting plate rotating to a preset angle, looping the steps S30 to S40 until the lifting assembly descends to a third position; Step S80: Based on the lifting assembly being located at the third position, the first lifting plate and the second lifting plate are controlled to move horizontally until the first lifting plate and the second lifting plate are separated from the material frame assembly.

2. A method for heat treatment and framing of a universal joint cross shaft according to claim 1, characterized in that: The step S80 includes: Step S81, based on the lifting assembly being located at the third position, controlling the first lifting plate to move horizontally until the first lifting plate is separated from the material frame assembly; Step S82, based on the first lifting plate being separated from the material frame assembly, controlling the second lifting plate to move horizontally until the second lifting plate is separated from the material frame assembly.

3. A method for heat treatment and framing of a universal joint cross shaft according to claim 1, characterized in that: The first lifting plate has a first side and a second side facing each other; the second lifting plate has a third side and a fourth side facing each other; the second side and the third side are arranged close to each other; when the first side and the fourth side are parallel to each other, an angle is formed between the second side and the third side; In the step S60, during the process of controlling the first lifting plate and the second lifting plate to rotate around the vertical axis respectively, the angle between the second side and the third side gradually decreases.

4. A method for heat treatment and framing of a universal joint cross shaft according to claim 1, characterized in that: The heat treatment tooling for the universal joint cross shaft is applied to the heat treatment framing method for the universal joint cross shaft, and the heat treatment tooling for the universal joint cross shaft comprises: A material frame assembly, the material frame assembly comprising a bottom plate, a cover plate, a plurality of vertical poles and a plurality of anti-falling poles; the vertical poles are detachably connected to the bottom plate; the vertical poles are detachably connected to the cover plate; the anti-falling poles are detachably connected to the bottom plate; the vertical poles are parallel to the anti-falling poles; A lifting assembly, the lifting assembly comprising a first lifting plate, a second lifting plate and a driving unit, the first lifting plate and the second lifting plate are parallel to each other, and the first lifting plate and the second lifting plate are arranged in sequence along a first horizontal direction; the ends of the first lifting plate and the second lifting plate close to each other are both suspended; the ends of the first lifting plate and the second lifting plate far away from each other are respectively connected to the driving unit; a plurality of first giving way grooves are provided on the first lifting plate; the first giving way grooves penetrate to the end of the first lifting plate close to the second lifting plate; a plurality of second giving way grooves are provided on the second lifting plate, and the second giving way grooves penetrate to the end of the second lifting plate close to the first lifting plate; Wherein, the heat treatment tooling for the universal joint cross shaft includes a first state and a second state; The first state includes: the first lifting plate and the second lifting plate are located in the material frame assembly; part of the anti-falling rod is located in the first giving way groove, and the other part of the anti-falling rod is located in the second giving way groove; The second state includes: the first lifting plate and the second lifting plate are located outside the material frame assembly.

5. A method for heat treatment and framing of a universal joint cross shaft according to claim 4, characterized in that: A length of the first lifting plate along the first horizontal direction is smaller than a length of the second lifting plate along the first horizontal direction.

6. A method for heat treatment and framing of a universal joint cross shaft according to claim 5, characterized in that: The first lifting plate has a first side and a second side that are opposite to each other; the second lifting plate has a third side and a fourth side that are opposite to each other; the second side and the third side are arranged close to each other; when the first side and the fourth side are parallel to each other, an angle is formed between the second side and the third side.

7. A method for heat treatment and framing of a universal joint cross shaft according to claim 6, characterized in that: The first side edge and the second side edge are parallel to each other; the third side edge and the fourth side edge have an included angle.

8. A method for heat treatment and framing of a universal joint cross shaft according to claim 4, characterized in that: The anti-fall rod includes a rod body and a limit block; the rod body and the limit block are detachably connected; slots corresponding to the rod bodies are provided on the bottom plate; when the rod body is inserted into the corresponding slots, the limit block abuts against the upper surface of the bottom plate under the action of gravity.

9. A method for heat treatment and framing of a universal joint cross shaft according to claim 4, characterized in that: The bottom plate and the cover plate both present a mesh hollow structure.

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