CN116875790B

CN116875790B - Sheet metal processing part heat treatment equipment

Info

Publication number: CN116875790B
Application number: CN202310926076.6A
Authority: CN
Inventors: 苑跟明
Original assignee: Jiangsu Sida Heavy Industry Co ltd
Current assignee: Jiangsu Sida Heavy Industry Co ltd
Priority date: 2023-07-25
Filing date: 2023-07-25
Publication date: 2023-12-08
Anticipated expiration: 2043-07-25
Also published as: CN116875790A

Abstract

The invention relates to the technical field of part processing, in particular to a heat treatment device for sheet metal processing parts, which comprises a heat treatment furnace, wherein a placing plate is placed in the heat treatment furnace, two limiting devices are symmetrically arranged at the upper end of the placing plate left and right, and a plurality of placing devices for placing the parts are connected between the two limiting devices in a sliding manner. According to the invention, the parts are supported by a plurality of placing rods in a distributed and uniform manner, so that the contact area between the parts and equipment can be effectively reduced, the phenomenon that the parts are heated unevenly in a large area is avoided, and the heat treatment effect of the parts is ensured; through the mutually supporting of gag lever post and splint, can carry out spacing processing to the part after placing, avoid the phenomenon that the part drops in the removal in-process to appear, also can prevent that the part from appearing dropping in the water cooling in-process to stability when part heat treatment has been improved.

Description

Sheet metal processing part heat treatment equipment

Technical Field

The invention relates to the technical field of part machining, in particular to a sheet metal machining part heat treatment device.

Background

The sheet metal part is a product processed by a sheet metal process, and the sheet metal process comprises metal drawing, plasma cutting, precision welding, roll forming, bending forming and the like.

The sheet metal part needs to be subjected to heat treatment after being molded, and the strength of the sheet metal part after heat treatment can be effectively improved.

When carrying out heat treatment to L type panel beating part, current equipment is usually directly placed a plurality of parts on the heat treatment platform, then pushes away the heat treatment platform to heat treatment furnace in and carries out a series of heat treatment, and this method can be to a large amount of parts treatment in a heat treatment process, the effectual efficiency that improves the part heat treatment to the part is placed simply and conveniently.

However, in the method, the parts are directly contacted with the equipment in a large area when placed, so that the phenomenon of non-uniform heating of the parts is caused, the effect of heat treatment of the parts is reduced, and the phenomenon that unfixed parts fall into a cooling tank in the cooling process of the heat treatment of the parts is caused, so that the step of salvaging the parts is increased, and the efficiency of the heat treatment is reduced.

Disclosure of Invention

Based on the above, it is necessary to provide a sheet metal processing part heat treatment device, which aims to solve the problems of uneven heating caused by small exposure of a part heating surface and low stability of the part during heat treatment in the prior art.

In order to achieve the above purpose, the present invention is implemented by adopting the following technical scheme: the utility model provides a sheet metal processing part heat treatment equipment, includes the heat treatment furnace, place the board in the heat treatment furnace is inside to be placed, place board upper end bilateral symmetry and install two stop device, two sliding connection has a plurality of placers that are used for placing the part between the stop device.

The placement device includes: and the guide rail plate is connected between the two limiting devices in a sliding way, and two guide rail grooves for sliding are symmetrically formed in the front and back of the upper end of the guide rail plate.

The support mechanisms are arranged in the guide rail grooves and used for supporting parts, the support mechanism positioned on the rightmost side is fixedly connected with the guide rail grooves, and the rest support mechanisms are in sliding fit with the guide rail grooves.

And the limiting mechanism is arranged at the upper end of the guide rail plate and used for limiting the parts.

And the loading mechanisms are two in number and are symmetrically arranged at the upper end of the guide rail plate front and back and used for placing and positioning operation of mounting parts.

The limiting mechanism comprises limiting units which are arranged in a front-back symmetrical mode, clamping units which correspond to the supporting mechanisms one to one mode and are connected with the supporting mechanisms one to one, telescopic rods are arranged between the two adjacent clamping units, two clamping plates which are U-shaped and are downward in opening are symmetrically arranged on the clamping units front-back, and uniform interval distribution and fixing operation of parts are completed through linkage movement cooperation of the limiting units, the limiting units are limited in the front-back mode, the clamping plates are limited in the left-right mode, and the clamping units and the supporting mechanisms.

According to the embodiment of the invention, the limiting mechanism further comprises two supporting rods which are symmetrically arranged at the upper ends of the guide rail plates in a left-right mode, a rectangular frame is arranged at the upper ends of the two supporting rods together, the front end and the rear end of the rectangular frame are fixedly connected with the two limiting units, two sliding rail rods are symmetrically arranged in the rectangular frame in a front-back mode, and a plurality of clamping units are connected to the two sliding rail rods in a sliding mode.

According to the embodiment of the invention, the clamping unit comprises a sliding plate which penetrates through and is connected to the two sliding rail rods in a sliding manner, a strip-shaped plate is arranged at the lower end of the sliding plate, two U-shaped clamping plates with downward openings are symmetrically arranged at the front and back of the lower end of the strip-shaped plate, and two connecting rods are symmetrically arranged at the right side of the lower end of the strip-shaped plate.

According to the embodiment of the invention, the limiting unit comprises two limiting frames which are symmetrically arranged on the rectangular frame in a left-right mode, the limiting frames are of L-shaped structures, L-shaped limiting grooves are formed in opposite ends of the limiting frames, and limiting rods are connected in the left-right opposite limiting grooves in a sliding mode.

According to the embodiment of the invention, the supporting mechanism comprises a rectangular plate arranged in the guide rail groove on the guide rail plate, a plurality of L-shaped placement rods are arranged at the upper end of the rectangular plate, and the upper end of the rectangular plate is fixedly connected with the lower end of the connecting rod.

According to the embodiment of the invention, the charging mechanism comprises a mounting plate arranged at the upper end of the guide rail plate, a rotating plate is rotatably connected to the upper side of the back of the mounting plate, a placing frame is arranged on the rotating plate, and a pushing unit is slidably connected to the middle section of the placing frame.

According to the embodiment of the invention, the pushing unit comprises a pushing rod penetrating through the middle section of the placing frame in a sliding connection mode, and a pushing plate is arranged at the end of the pushing rod positioned in the placing frame.

According to the embodiment of the invention, the limiting device comprises a limiting plate arranged at the upper end of the placing plate, a plurality of evenly distributed placing grooves are formed in the opposite surface of the limiting plate, two U-shaped plates are symmetrically arranged on the front end face and the rear end face of the limiting plate, and rectangular rods are connected in the two U-shaped plates on the same side of the limiting plate in a sliding mode.

According to the embodiment of the invention, the left end and the right end of the guide rail plate are uniformly and integrally formed with the extension plates, and the extension plates are in sliding fit with the placing grooves.

In summary, the present invention includes at least one of the following beneficial technical effects: 1. the parts are supported by the distributed uniform points through the plurality of placing rods, so that the contact area between the parts and equipment can be effectively reduced, the phenomenon that the parts are heated unevenly in a large area is avoided, and the heat treatment effect of the parts is ensured.

2. The parts can be firstly placed in a concentrated mode, then the parts are simultaneously installed and placed on the corresponding placing rods in the process of one-time part installation, so that repeated steps of a large number of part installation are reduced, the parts can be uniformly distributed at intervals, the maximum exposure of each part is ensured, and heat treatment can be effectively carried out.

3. The limit rod and the clamping plate are matched with each other, so that the placed part can be subjected to limit treatment, the falling phenomenon of the part in the moving process is avoided, the falling of the part in the water cooling process is also prevented, and the stability of the part in the heat treatment is improved.

4. The installed and placed parts can be simultaneously suitable for annealing, normalizing, quenching, tempering and other steps, and the steps of repeated feeding and discharging are not needed under each step, so that the time required by heat treatment of the parts is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic perspective view of a heat treatment apparatus for sheet metal parts according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view showing a heat treatment furnace removed from a sheet metal part heat treatment apparatus according to an embodiment of the present invention.

Fig. 3 is a front view showing a sheet metal part heat treatment apparatus according to an embodiment of the present invention after removal of a heat treatment furnace.

Fig. 4 shows a cross-sectional view of a sheet metal part heat treatment apparatus provided according to an embodiment of the present invention.

Fig. 5 shows a cross-sectional view A-A in fig. 3.

Fig. 6 shows a perspective cross-sectional view of a sheet metal part heat treatment apparatus provided according to an embodiment of the present invention.

Fig. 7 shows an enlarged view at N in fig. 6.

Wherein the above figures include the following reference numerals: 1. heat treatment furnace; 2. placing a plate; 3. a placement device; 4. and a limiting device.

31. A guide rail plate; 311. a guide rail groove; 32. a support mechanism; 321. a rectangular plate; 322. placing a rod; 33. a limiting mechanism; 331. a support rod; 332. a rectangular frame; 333. a limit unit; 3331. a limiting frame; 3332. a limit groove; 3333. a limit rod; 334. a slide rail rod; 335. a clamping unit; 3351. a sliding plate; 3352. a strip-shaped plate; 3353. a clamping plate; 3354. a connecting rod; 336. a telescopic rod; 34. a charging mechanism; 341. a mounting plate; 342. a rotating plate; 343. placing a frame; 344. a pushing unit; 3441. pushing the rod; 3442. pushing the plate.

41. A limiting plate; 42. a placement groove; 43. a U-shaped plate; 44. rectangular bar.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

Referring to fig. 1-4, a heat treatment device for sheet metal processing parts comprises a heat treatment furnace 1, wherein a placing plate 2 is placed in the heat treatment furnace 1, two limiting devices 4 are symmetrically installed at the upper end of the placing plate 2 left and right, and a plurality of placing devices 3 for placing parts are connected between the two limiting devices 4 in a sliding manner.

Referring to fig. 5 and 6, the placement device 3 includes a guide rail plate 31 slidably connected between the two limiting devices 4, two guide rail grooves 311 for sliding are symmetrically provided on the upper end of the guide rail plate 31, a plurality of supporting mechanisms 32 for supporting parts are provided in the guide rail grooves 311, the supporting mechanism 32 located on the rightmost side is fixedly connected with the guide rail grooves 311, the rest supporting mechanisms 32 are slidably matched with the guide rail grooves 311, and a limiting mechanism 33 for limiting the parts is installed on the upper end of the guide rail plate 31.

The loading mechanisms 34 are two in number and are symmetrically installed on the upper end of the guide rail plate 31 in front-back for the placing and positioning operation of the installed parts.

The limiting mechanism 33 comprises a limiting unit 333, a clamping unit 335, a telescopic rod 336, two clamping units 335, two clamping units 3353, a U-shaped clamping plate 3353 and a fixing operation, wherein the limiting unit 333 is arranged in a front-back symmetrical mode, the clamping units 335 are in one-to-one correspondence with the supporting mechanism 32 and are connected with the supporting mechanism 32, the telescopic rod 336 is arranged between the two adjacent clamping units 335, the clamping units 335 are provided with two clamping plates 3353 which are in a U shape and are downward in opening in a front-back symmetrical mode, and the uniform interval distribution and the fixing operation of the parts are completed through the linkage movement coordination of the limiting unit 333, the clamping plates 3353 and the supporting mechanism 32.

Referring to fig. 5-7, the limiting mechanism 33 further includes two support rods 331 symmetrically mounted on the upper ends of the guide rail plates 31, a rectangular frame 332 is mounted on the upper ends of the support rods 331, the front end and the rear end of the rectangular frame 332 are fixedly connected with the limiting unit 333, two sliding rail rods 334 are symmetrically mounted in the rectangular frame 332, and a plurality of clamping units 335 are slidably connected to the two sliding rail rods 334.

Referring to fig. 5, in particular operation, in the initial state, the plurality of telescopic rods 336 are at the shortest length, the spacing between two adjacent clamping units 335 is the same, and the supporting mechanism 32 and the clamping units 335 are both concentrated on the right side of the rail plate 31.

Referring to fig. 5-7, the loading mechanism 34 includes a mounting plate 341 mounted on the upper end of the guide rail plate 31, a rotating plate 342 rotatably connected to the upper side of the back of the mounting plate 341, a u-shaped placement frame 343 mounted on the rotating plate 342, and a pushing unit 344 slidably connected to the middle section of the placement frame 343.

Referring to fig. 5-7, in a specific operation, in an initial state, the openings of the placement frames 343 are upward, a plurality of parts are placed in two placement frames 343 on the same guide rail plate 31 by manual or mechanical means and pushed to the right end respectively, so that the plurality of parts are clung, then the placement frames 343 are rotated, the placement frames 343 are rotated on the mounting plate 341 through the rotating plate 342, so that the openings of the placement frames 343 face the supporting mechanism 32, at this time, the parts are in one-to-one correspondence with the clamping units 335, and then the loading mechanism 34 drives the plurality of parts to move to the supporting mechanism 32 to finish placement of the parts in place.

Referring to fig. 5-7, the clamping unit 335 includes a sliding plate 3351 penetrating through and slidably connected to the two sliding rails 334, a strip-shaped plate 3352 is installed at the lower end of the sliding plate 3351, two U-shaped clamping plates 3353 with downward openings are symmetrically installed at the lower end of the strip-shaped plate 3352, and two connecting rods 3354 are symmetrically installed at the right side of the lower end of the strip-shaped plate 3352.

Referring to fig. 5-7, the supporting mechanism 32 includes a rectangular plate 321 disposed in the guide rail slot 311 of the guide rail plate 31, a plurality of L-shaped placement rods 322 are mounted at the upper end of the rectangular plate 321, and the upper end of the rectangular plate 321 is fixedly connected with the lower end of the connecting rod 3354.

Referring to fig. 5-7, the pushing unit 344 includes a pushing rod 3441 slidably connected to the middle section of the placement frame 343, and a pushing plate 3442 is mounted on an end of the pushing rod 3441 located inside the placement frame 343.

Referring to fig. 5-7, in a specific operation, after the placement frame 343 drives the plurality of parts to move above the guide rail plate 31, at this time, the lower end surface of the parts and the upper end surface of the placement rod 322 are at the same height, the push rod 3441 is pushed, the push rod 3441 pushes the plurality of parts onto the placement rod 322 with the L-shaped upper ends of the plurality of rectangular plates 321 through the push rod 3442, the placement rod 322 supports the parts, in the process of moving the parts, one side of the parts just passes through the openings on the clamping plates 3353, the openings on the clamping plates 3353 plays a role in guiding the movement of the parts, thereby avoiding the offset phenomenon of the parts in the moving process, ensuring that the parts can be effectively placed on the placement rod 322, reducing the time required for installing and placing the parts, rotating the placement frame 343 downwards after the placement of the parts, resetting the placement rod 322, carrying out point support on the parts, effectively reducing the contact area between the parts and the equipment, and further improving the uniformity of heat treatment of the parts.

Referring to fig. 5, the limiting unit 333 includes two limiting frames 3331 symmetrically mounted on the rectangular frame 332, the limiting frames 3331 are in an L-shaped structure, the opposite ends of the limiting frames 3331 are provided with L-shaped limiting grooves 3332, and limiting rods 3333 are slidably connected in the left and right opposite limiting grooves 3332.

Referring to fig. 5-7, in a specific operation, in an initial state, the stop lever 3333 is positioned at a horizontal section of the stop slot 3332, after the placement of the part is completed, the stop lever 3333 is manually pulled from the horizontal section of the stop slot 3332 to a vertical section and moves downwards to the bottom of the stop slot 3332, at this time, the stop lever 3333 is positioned at the outer side of the part and limits the front-back movement of the part, meanwhile, the clamping plate 3353 limits the left-right movement of the part, the situation that the part falls off from the placement rod 322 in the moving process is avoided, the placement stability of the part is improved, then the sliding plate 3351 positioned at the leftmost side is manually pulled, the sliding plate 3351 drives the two clamping plates 3353 to move through the strip plate 3352, the two clamping plates 3353 move to drive the two parts which are placed in front and back symmetry to move, meanwhile, the strip-shaped plates 3352 drive the two corresponding rectangular plates 321 to slide in the guide rail grooves 311 through the two connecting rods 3354, the adjacent two sliding plates 3351 move through the telescopic rods 336, the rectangular plates 321 on the rightmost side are fixed in the guide rail grooves 311, the telescopic rods 336 play a limiting role on the rest rectangular plates 321, and after all the telescopic rods 336 reach the longest distance, the leftmost sliding plates 3351 are loosened, so that a plurality of placed parts are distributed at uniform intervals, and each part is ensured to be subjected to heat treatment effectively.

Referring to fig. 2, the limiting device 4 includes a limiting plate 41 mounted at the upper end of the placement plate 2, a plurality of uniformly distributed placement grooves 42 are disposed on opposite surfaces of the limiting plate 41, two U-shaped plates 43 are symmetrically mounted on front and rear end surfaces of the limiting plate 41, and rectangular rods 44 are slidably connected in the two U-shaped plates 43 on the same side of the limiting plate 41.

Referring to fig. 2, the left and right ends of the guide rail plate 31 are uniformly formed with extension plates, which are slidably engaged with the placement grooves 42.

Referring to fig. 2 and 4, in specific operation, a plurality of guide rail plates 31 with parts mounted and placed are inserted into a plurality of corresponding placing grooves 42 through extension plates by using manual or existing hoisting equipment, then rectangular rods 44 are moved to the end parts of the placing grooves 42, the guide rail plates 31 are blocked, the phenomenon that the guide rail plates 31 fall off in the moving process is avoided, then the hoisting equipment hoistes the plurality of guide rail plates 31 and the parts into a heat treatment furnace 1 through two limiting plates 41 and the placing plates 2 for heat treatment, and the heat treatment of the parts is completed through steps of annealing, normalizing, quenching, tempering and the like, and then the cooled parts are taken down from the placing rods 322, so that the heat treatment is finished.

The invention is particularly used: s1: the plurality of parts are respectively placed in the two placing frames 343 on the same guide rail plate 31 in a manual or mechanical mode and pushed towards the right end, then the placing frames 343 are rotated, the placing frames 343 are rotated on the mounting plate 341 through the rotating plate 342, the pushing rods 3441 are pushed, and the pushing rods 3441 push the plurality of parts onto the placing rods 322 which are distributed in an L shape at the upper ends of the plurality of rectangular plates 321 through the pushing plates 3442.

S2: the limiting rod 3333 is manually pulled to a vertical section from the horizontal section of the limiting groove 3332 and moves downwards to the bottom of the limiting groove 3332, then the sliding plate 3351 positioned at the leftmost side is manually pulled, the sliding plate 3351 drives the two clamping plates 3353 to move through the strip-shaped plates 3352, the two clamping plates 3353 move to drive the two parts which are symmetrically placed back and forth to move, meanwhile, the strip-shaped plates 3352 drive the two corresponding rectangular plates 321 to slide in the guide rail groove 311 through the two connecting rods 3354, the adjacent two sliding plates 3351 move through the telescopic rods 336, and when all the telescopic rods 336 reach the longest distance, the leftmost sliding plate 3351 is loosened.

S3: the plurality of guide rail plates 31 mounted with the parts are inserted into the plurality of corresponding placement grooves 42 through the extension plates, and then the rectangular bar 44 is moved to the end of the placement groove 42 to block the guide rail plates 31.

S4: the lifting device lifts the guide rail plates 31 and the parts into the heat treatment furnace 1 through the two limiting plates 41 and the placing plate 2 for heat treatment, the heat treatment of the parts is completed through the steps of annealing, normalizing, quenching, tempering and the like, and then the cooled parts are taken down from the placing rods 322, and the heat treatment is finished.

In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality", "a plurality of groups" is two or more.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The embodiments of the present invention are all preferred embodiments of the present invention, and are not limited in scope by the present invention, so that all equivalent changes according to the structure, shape and principle of the present invention are covered in the scope of the present invention.

Claims

1. The utility model provides a sheet metal processing part heat treatment equipment, includes heat treatment furnace (1), its characterized in that: a placing plate (2) is placed in the heat treatment furnace (1), two limiting devices (4) are symmetrically arranged at the upper end of the placing plate (2) in a left-right mode, and a plurality of placing devices (3) for placing parts are connected between the two limiting devices (4) in a sliding mode;

the placement device (3) comprises a guide rail plate (31) which is connected between the two limiting devices (4) in a sliding way, and two guide rail grooves (311) for sliding are symmetrically formed in the front and back of the upper end of the guide rail plate (31);

the support mechanisms (32) are arranged in the guide rail grooves (311) and used for supporting parts, the support mechanism (32) positioned at the rightmost side is fixedly connected with the guide rail grooves (311), and the rest support mechanisms (32) are in sliding fit with the guide rail grooves (311);

the limiting mechanism (33) is arranged at the upper end of the guide rail plate (31) and used for limiting the parts;

the charging mechanisms (34) are two in number and are symmetrically arranged at the upper end of the guide rail plate (31) in front-back direction and used for placing and positioning operation of mounting parts;

the limiting mechanism (33) comprises limiting units (333) which are arranged in a front-back symmetrical mode, clamping units (335) which are in one-to-one correspondence with the supporting mechanisms (32) and are connected, telescopic rods (336) are arranged between two adjacent clamping units (335), two U-shaped clamping plates (3353) with downward openings are arranged on the clamping units (335) in a front-back symmetrical mode, and uniform interval distribution and fixing operation of parts are completed through linkage movement cooperation of the limiting units (333), front-back limiting of the clamping plates (3353), left-right limiting of the clamping units (335) and the supporting mechanisms (32);

the limiting mechanism (33) further comprises two supporting rods (331) symmetrically arranged at the upper ends of the guide rail plates (31) in a left-right mode, a rectangular frame (332) is commonly arranged at the upper ends of the two supporting rods (331), the front end and the rear end of the rectangular frame (332) are fixedly connected with two limiting units (333), two sliding rail rods (334) are symmetrically arranged in the rectangular frame (332) in a front-back mode, and a plurality of clamping units (335) are commonly and slidably connected to the two sliding rail rods (334);

the clamping unit (335) comprises a sliding plate (3351) which penetrates through and is connected to the two sliding rail rods (334) in a sliding manner, a strip-shaped plate (3352) is arranged at the lower end of the sliding plate (3351), the lower end of the strip-shaped plate (3352) is fixedly connected with two clamping plates (3353), and two connecting rods (3354) are symmetrically arranged on the right side of the lower end of the strip-shaped plate (3352) in a front-back manner;

the limiting unit (333) comprises two limiting frames (3331) which are symmetrically arranged on the rectangular frame (332) left and right, the limiting frames (3331) are of L-shaped structures, L-shaped limiting grooves (3332) are formed in the opposite ends of the limiting frames (3331), and limiting rods (3333) are connected in the left and right opposite limiting grooves (3332) in a sliding mode;

the supporting mechanism (32) comprises a rectangular plate (321) arranged in a guide rail groove (311) on the guide rail plate (31), a plurality of L-shaped placement rods (322) are arranged at the upper end of the rectangular plate (321), and the upper end of the rectangular plate (321) is fixedly connected with the lower end of the connecting rod (3354);

the charging mechanism (34) comprises a mounting plate (341) arranged at the upper end of the guide rail plate (31), a rotating plate (342) is rotatably connected to the upper side of the back of the mounting plate (341), a placing frame (343) is arranged on the rotating plate (342), and a pushing unit (344) is slidably connected to the middle section of the placing frame (343).

2. The sheet metal part heat treatment apparatus of claim 1, wherein: the pushing unit (344) comprises a pushing rod (3441) penetrating through the middle section of the placement frame (343) in a sliding connection mode, and a pushing plate (3442) is arranged at the end portion of the pushing rod (3441) located inside the placement frame (343).

3. The sheet metal part heat treatment apparatus of claim 1, wherein: limiting device (4) are including installing limiting plate (41) of placing board (2) upper end is provided with a plurality of evenly distributed's standing groove (42) on limiting plate (41) relative face, and two U template (43) are all installed to the up-and-down symmetry of both ends face around limiting plate (41), and joint sliding connection has rectangular rod (44) in two U template (43) of limiting plate (41) with one side.

4. A sheet metal part heat treatment apparatus according to claim 3, characterized in that: extension plates are uniformly formed at the left end and the right end of the guide rail plate (31), and the extension plates are in sliding fit with the placing grooves (42).