Pre-oxidation heat treatment furnace for processing piston rod of gas spring

Abstract

The invention relates to the technical field of heat treatment furnaces, in particular to a pre-oxidation heat treatment furnace for gas spring piston rod machining, which comprises a heat treatment furnace body, the middle part of the heat treatment furnace body is recessed inwards to form a heating cavity, and the side surface of the heat treatment furnace body is also provided with a sealing door for sealing the heating cavity; a plurality of storage plates for storing the spring piston rods are arranged in the heating cavity, a pushing mechanism for driving the storage plates to move is further arranged outside the storage plates, and a power assisting mechanism for increasing the moving distance of the storage plates is further arranged below the storage plates; through cooperation of the storage plate, the pushing mechanism, the transmission block, the pushing rod, the clamping rod, the locking plate and other structures, the pushing rod pushes the storage plate to move towards the outside of the heat treatment furnace body, the operation of manual repeated force application is omitted, the labor intensity of workers can be remarkably reduced especially for the scene of multiple layers of storage plates or full-load gas spring piston rods, and the working efficiency is improved. And the moving-out action of the storage plate is more efficient and controllable, and potential safety hazards are reduced.

Description

Technical Field

[0001] This invention relates to the field of heat treatment furnace technology, and in particular to a pre-oxidation heat treatment furnace for processing gas spring piston rods. Background Technology

[0002] The piston rod is the connecting component that supports the piston in performing work. It is mostly used in hydraulic cylinders and pneumatic cylinders. It is a moving component with frequent movement and high technical requirements. During the processing of the piston rod, its performance needs to be improved to ensure its service life. There are various methods for surface heat treatment of piston rods, including flame hardening, induction heating, vacuum furnace heating, high-frequency induction hardening, and ion carburizing. The appropriate heat treatment equipment should be selected according to the specific piston rod material, size, and processing requirements to achieve precise control and optimized treatment of the piston rod surface.

[0003] Existing heat treatment furnaces often have multiple storage plates along the height direction inside the furnace cavity. The storage plates can be moved out of the furnace to retrieve and place workpieces through a pull-out structure. However, the current pull-out operation relies on manual operation, which not only results in high labor intensity for workers and low efficiency for each retrieval and placement, but also poses safety hazards as workers need to be in close contact with the high-temperature furnace body during manual pull-out. Therefore, there is an urgent need to propose a pre-oxidation heat treatment furnace for processing gas spring piston rods. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a pre-oxidation heat treatment furnace for processing gas spring piston rods.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A pre-oxidation heat treatment furnace for processing gas spring piston rods includes a heat treatment furnace body. The middle part of the heat treatment furnace body is recessed to form a heating chamber. A sealing door for sealing the heating chamber is also provided on the side of the heat treatment furnace body. Several storage plates for storing the spring piston rods are provided inside the heating chamber. A pushing mechanism for moving the storage plates is also provided outside the storage plates. The pushing mechanism includes a fixed frame fixed inside the heat treatment furnace body and a locking plate fixed to the bottom of the storage plate. A transmission block is slidably connected in the middle of the fixed frame. A push rod for pushing the storage plate is also fixed on the side of the transmission block near the storage plate. An ejection mechanism is provided between the transmission block and the locking plate. A booster mechanism is also provided below the storage plate to increase the moving distance of the storage plate.

[0006] As a preferred technical solution of the present invention, the ejection mechanism includes a positioning plate rotatably mounted on the top of the fixed frame, a sliding rod rotatably connected to the end of the positioning plate away from the fixed frame, a limiting groove for the sliding rod to slide on the top of the transmission block, and a first spring fixed between the transmission block and the fixed frame. The limiting groove is heart-shaped, the sliding rod is inserted inside the limiting groove, and the end of the push rod away from the storage plate passes through the fixed frame and is fixed to the transmission block; The limiting groove is recessed inward at the middle of the end near the push rod to form a V-shaped groove. When the storage plate needs to be removed, the storage plate is pushed, the storage plate drives the push rod to move, the push rod drives the transmission block to move, and the transmission block drives the limiting groove to move. The limiting groove cooperates with the slide rod, so that the limiting groove moves from the inside of the V-shaped groove to the end of the limiting groove near the first spring. The first spring releases its elastic force to push the transmission block to move inside the fixed frame. The transmission block pushes the push rod to move, the push rod pushes the storage plate to move, and pushes the storage plate to move to the outside of the heat treatment furnace body.

[0007] As a preferred technical solution of the present invention, two extension plates are also fixed at the bottom of the transmission block, and a rotating shaft is fixed between the two extension plates. Two locking rods are rotatably connected to the outer wall of the rotating shaft, and a hook adapted to the locking plate is provided at the end of the two locking rods away from the rotating shaft. The bottom of the transmission block is also fixed with a stroke block, and two connecting plates are fixed on the side of the two levers away from the hook. A transmission rod is also fixed between the two connecting plates. A groove is provided in the middle of the stroke block to facilitate the sliding of the transmission rod. When the push rod drives the transmission block to move, the transmission block drives the stroke block to move closer to the first spring. The transmission rod cooperates with the slide groove, so that the transmission rod moves along the inside of the slide groove. The locking rod is affected by gravity and rotates around the axis of the rotating shaft, so that the locking rod drives one end of the hook to move downward, and the hook separates from the locking plate.

[0008] As a preferred embodiment of the present invention, inner rods are fixed on both sides of the transmission block, and the inner wall of the fixed frame is also provided with a positioning groove for the inner rods to move and slide. The limiting groove is also fixed with a limiting plate, and the limiting plate is provided with an inclined surface at the end near the push rod. The inclined surface of the limiting plate is set on the side close to the V-shaped groove. When the slide rod slides along the inside of the limiting groove toward the end close to the first spring, after the slide rod moves along the inclined surface of the groove, the slide rod moves to the end close to the first spring. The limiting plate limits the first spring to prevent the first spring from moving from the side of the limiting groove with the limiting plate to the side close to the V-shaped groove.

[0009] As a preferred technical solution of the present invention, the assisting mechanism includes an installation block fixed to the bottom of the storage plate and a force-bearing block fixed to the inner wall of the heat treatment furnace body. A second spring is also fixed between the installation block and the heat treatment furnace body, and a blocking block is also provided on the side of the installation block near the force-bearing block. The blocking block is provided with a main inclined surface at the end away from the mounting block, and the force-bearing block is provided with a secondary inclined surface that is adapted to the main inclined surface on the side away from the heat treatment furnace body. The force-bearing block is L-shaped, and the blocking block is inserted in the middle of the mounting block. When the hook of the lever cooperates with the locking plate to lock the storage plate, the main inclined surface of the blocking block contacts the secondary inclined surface of the force-bearing block.

[0010] As a preferred embodiment of the present invention, the mounting block has a slot inside to facilitate the movement of the blocking block, and a third spring is fixed inside the slot. The end of the blocking block away from the main inclined surface is inserted into the slot. The top of the blocking block is also fixed with a blocking rod to limit its movement, and the end of the mounting block away from the force-bearing block is fixed with a buffer post to limit the movement of the mounting block. When the blocking block moves into the mounting block, it drives the blocking rod to move, so that the blocking rod cooperates with the mounting block to limit the blocking block and prevent the blocking block from entering the slot completely. It also cooperates with the heat treatment furnace body through the buffer column, so that the buffer column contacts the inside of the heat treatment furnace body on the side near the sealing door, preventing the storage plate from being ejected directly from the inside of the heat treatment furnace body when it moves to the outside of the heat treatment furnace body.

[0011] As a preferred embodiment of the present invention, a rotating rod is rotatably connected inside the heat treatment furnace body, and several rotating plates are fixed on the outer wall of the rotating rod. The rotating plate is elliptical in shape and is eccentrically fixed to the outer wall of the rotating rod. Rotate the rotating rod, which drives the rotating plate to rotate. The end of the rotating plate away from the rotating rod contacts the side of the blocking block away from the force-bearing block, so that the main inclined surface of the blocking block matches the secondary inclined surface of the force-bearing block. The blocking block moves into the interior of the mounting block, and at the same time, the blocking block drives the mounting block to move closer to the pushing mechanism. The mounting block drives the storage plate to move closer to the pushing mechanism.

[0012] As a preferred embodiment of the present invention, a gear is fixed to the outer wall of the rotating rod, and a rack is provided on the side of the gear. The rack is inserted into the interior of the heat treatment furnace body, and the end of the rack away from the gear extends to the outside of the heat treatment furnace body. The rack is pushed to move, the rack drives the gear to rotate, the gear drives the rotating rod to rotate, and the rotating rod drives several rotating plates to rotate.

[0013] Compared with the prior art, the beneficial effects that this invention can achieve are: This invention utilizes the cooperation of a storage plate, a pushing mechanism, a transmission block, a push rod, a locking rod, and a locking plate to enable the push rod to move the storage plate to the outside of the heat treatment furnace body, eliminating the need for repeated manual force application. Especially for scenarios with multiple storage plates or fully loaded gas spring piston rods, it can significantly reduce the labor intensity of workers, making the removal of the storage plate more efficient, controllable, and reducing safety hazards. The present invention uses the cooperation of a fixed frame, a transmission block, a first spring and an inner rod to enable the transmission block to move horizontally inside the fixed frame. The inner rod forms a double guiding constraint, which forces the transmission block to move along a preset horizontal trajectory. This avoids problems such as jamming and abnormal noise caused by deviation during force or high-frequency reciprocating movement, and ensures continuous and smooth transmission action. The present invention uses the cooperation of structures such as transmission block, slide bar, limiting groove and limiting plate to limit the slide bar, and the slide bar moves along a preset clockwise trajectory to avoid the slide bar from sliding backward, deviating or even falling off the trajectory due to force fluctuation or assembly gap. This invention, through the cooperation of a booster mechanism, mounting block, buffer column, blocking block, force-bearing block, rotating rod, rotating plate and rack, allows all workpieces to be picked up and put down in a single opening of the furnace door, avoiding the large loss of heat and atmosphere caused by the traditional method of opening and closing the furnace door multiple times. The present invention utilizes the cooperation of structures such as mounting block, second spring, blocking block and force-bearing block to enable the second spring to release its elastic force to push the mounting block to move, and the mounting block to drive the storage plate to move. The increased movement distance of the storage plate ensures that it extends completely outside the heat treatment furnace body, reducing the risk of bumps and falls caused by limited operating space. This invention utilizes the cooperation of structures such as mounting blocks, buffer pillars, blocking blocks, and blocking rods to limit the locking rod by the blocking block, preventing the locking rod from rigidly locking into the slot due to excessive embedding. This satisfies the positioning requirements for moving the storage plate while preventing component jamming, ensuring continuous and smooth linkage between the mounting block, storage plate, and other subsequent structures. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the heat treatment furnace body of the present invention; Figure 3 This is a schematic diagram of the structure of the storage plate of the present invention; Figure 4 This is a schematic diagram of the pushing mechanism of the present invention; Figure 5 This is a schematic diagram of the structure of the fixing frame of the present invention; Figure 6 This is a schematic diagram of the transmission block of the present invention; Figure 7 This is a schematic diagram of the limiting groove of the present invention; Figure 8 This is a schematic diagram of the structure of the stroke block of the present invention; Figure 9 This is a schematic diagram of the structure of the clamp of the present invention; Figure 10 This is a schematic diagram of the assist mechanism of the present invention; Figure 11 This is a schematic diagram of the mounting block of the present invention; Figure 12 This is a schematic diagram of the structure of the blocking block of the present invention; Figure 13 This is a schematic diagram of the rotating rod of the present invention; Figure 14 This is a schematic diagram of the rotating plate of the present invention.

[0015] The components include: 1. Heat treatment furnace body; 2. Sealed door; 3. Storage plate; 4. Pushing mechanism; 401. Fixed frame; 402. Transmission block; 403. Push rod; 404. Locking rod; 405. Locking plate; 406. Positioning plate; 407. First spring; 408. Rotating shaft; 409. Extension plate; 410. Slide rod; 411. Limiting groove; 412. Stroke block; 413. Inner rod; 414. Limiting plate; 415. Connecting plate; 416. Transmission rod; 5. Assist mechanism; 501. Mounting block; 502. Buffer column; 503. Second spring; 504. Blocking block; 505. Force-bearing block; 506. Gear; 507. Blocking rod; 508. Third spring; 509. Rotating rod; 510. Rotating plate; 511. Rack. Detailed Implementation

[0016] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0017] Example: The present invention provides, as follows Figure 1 and Figure 2 The pre-oxidation heat treatment furnace for processing gas spring piston rods shown includes a heat treatment furnace body 1. The middle part of the heat treatment furnace body 1 is recessed to form a heating chamber, and a sealing door 2 is provided on the side of the heat treatment furnace body 1 to seal the heating chamber. Several storage plates 3 are provided inside the heating chamber to store the spring piston rods.

[0018] As can be seen from the above, when in use, the gas spring piston rod that needs to be processed is placed on the storage plate 3, the storage plate 3 is pushed into the interior of the heat treatment furnace body 1, the sealing door 2 is closed with the heat treatment furnace body 1, and the gas spring piston rod is processed through the heat treatment furnace body 1.

[0019] refer to Figure 3 , Figure 4 and Figure 5 As shown, a pushing mechanism 4 is also provided on the outside of the storage plate 3 to drive it to move. The pushing mechanism 4 includes a fixed frame 401 fixed inside the heat treatment furnace body 1 and a locking plate 405 fixed at the bottom of the storage plate 3. A transmission block 402 is slidably connected in the middle of the fixed frame 401. A push rod 403 for pushing the storage plate 3 to move is also fixed on the side of the transmission block 402 near the storage plate 3. An ejection mechanism is provided between the transmission block 402 and the locking plate 405.

[0020] refer to Figure 5 , Figure 6 and Figure 7 As shown, the ejection mechanism includes a positioning plate 406 rotatably mounted on the top of the fixed frame 401. A sliding rod 410 is rotatably connected to one end of the positioning plate 406 away from the fixed frame 401. A limiting groove 411 is also provided on the top of the transmission block 402 to facilitate the sliding of the sliding rod 410. A first spring 407 is also fixed between the transmission block 402 and the fixed frame 401. The limiting groove 411 is set in a heart shape, and the slide rod 410 is made of a high-temperature resistant material with elasticity. The slide rod 410 is inserted into the limiting groove 411. The end of the push rod 403 away from the storage plate 3 passes through the fixed frame 401 and is fixed to the transmission block 402. The limiting groove 411 is recessed inward at the middle of one end near the push rod 403 to form a V-shaped groove. When the storage plate 3 needs to be removed, the storage plate 3 is pushed, and the storage plate 3 drives the push rod 403 to move. The push rod 403 drives the transmission block 402 to move, and the transmission block 402 drives the limiting groove 411 to move. The limiting groove 411 cooperates with the slide rod 410, so that the limiting groove 411 moves from inside the V-shaped groove to one end of the limiting groove 411 near the first spring 407. The first spring 407 releases its elastic force to push the transmission block 402 to move inside the fixed frame 401. The transmission block 402 pushes the push rod 403 to move, and the push rod 403 pushes the storage plate 3 to move, pushing the storage plate 3 to move to the outside of the heat treatment furnace body 1.

[0021] refer to Figure 5 , Figure 6 and Figure 7 As shown, inner rods 413 are fixed on both sides of the transmission block 402, and the inner wall of the fixing frame 401 is also provided with a positioning groove for the inner rods 413 to move and slide. The limiting groove 411 is also fixed with a limiting plate 414, and the limiting plate 414 is also provided with an inclined surface at the end near the push rod 403; The inclined surface of the limiting plate 414 is set on the side near the V-shaped groove. When the slide rod 410 slides along the inside of the limiting groove 411 toward the end near the first spring 407, after the slide rod 410 moves along the inclined surface of the groove, the slide rod 410 moves to the end near the first spring 407. The limiting plate 414 limits the first spring 407 to prevent the first spring 407 from moving from the limiting groove 411 with the limiting plate 414 to the side near the V-shaped groove.

[0022] refer to Figure 8 and Figure 9 As shown, two extension plates 409 are also fixed at the bottom of the transmission block 402, and a rotating shaft 408 is fixed between the two extension plates 409. Two locking rods 404 are rotatably connected to the outer wall of the rotating shaft 408. The ends of the two locking rods 404 away from the rotating shaft 408 are also provided with hooks that are compatible with the locking plate 405. The bottom of the transmission block 402 is also fixed with a stroke block 412, and two connecting plates 415 are fixed on the side of the two levers 404 away from the hook. A transmission rod 416 is also fixed between the two connecting plates 415. A groove is provided in the middle of the stroke block 412 to facilitate the sliding of the transmission rod 416. When the push rod 403 drives the transmission block 402 to move, the transmission block 402 drives the stroke block 412 to move towards the side closer to the first spring 407. The transmission rod 416 cooperates with the slide groove, so that the transmission rod 416 moves along the inside of the slide groove. The locking rod 404 is affected by gravity and rotates around the axis of the rotating shaft 408, so that the locking rod 404 drives one end of the hook to move downward, and the hook separates from the locking plate 405.

[0023] When it is necessary to remove the storage plate 3, push the storage plate 3. The storage plate 3 drives the push rod 403 to move. The push rod 403 drives the transmission block 402 to move. The transmission block 402 drives the limiting groove 411 to move. The limiting groove 411 cooperates with the slide rod 410. The slide rod 410 slides along the inside of the limiting groove 411. After the slide rod 410 moves along the inclined surface of the sliding groove of the limiting plate 414, the slide rod 410 moves to one end close to the first spring 407, so that the limiting groove 411 moves from the inside of the V-shaped groove to the end of the limiting groove 411 close to the first spring 407. The first spring 407 releases its elastic force to push the transmission block 402 to move inside the fixed frame 401. The transmission block 402 pushes the push rod 403 to move. The push rod 403 pushes the storage plate 3 to move, pushing the storage plate 3 to move to the outside of the heat treatment furnace body 1.

[0024] refer to Figure 10 , Figure 11 and Figure 12As shown, a booster mechanism 5 for increasing the moving distance of the storage plate 3 is also provided below the storage plate 3. The booster mechanism 5 includes an installation block 501 fixed to the bottom of the storage plate 3 and a force-bearing block 505 fixed to the inner wall of the heat treatment furnace body 1. A second spring 503 is also fixed between the installation block 501 and the heat treatment furnace body 1. A blocking block 504 is also provided on the side of the installation block 501 near the force-bearing block 505. The blocking block 504 is provided with a main inclined surface at the end away from the mounting block 501, and the force-bearing block 505 is also fixed with a secondary inclined surface that matches the main inclined surface on the side away from the heat treatment furnace body 1. The force-bearing block 505 is L-shaped, and the blocking block 504 is inserted in the middle of the mounting block 501. When the hook of the lever 404 cooperates with the locking plate 405 to lock the storage plate 3, the main inclined surface of the blocking block 504 contacts the secondary inclined surface of the force-bearing block 505.

[0025] refer to Figure 10 , Figure 11 and Figure 12 As shown, the mounting block 501 has a slot inside to facilitate the movement of the blocking block 504. A third spring 508 is also fixed inside the slot. The end of the blocking block 504 away from the main inclined surface is inserted into the slot. The top of the blocking block 504 is also fixed with a blocking rod 507 to limit its movement, and the end of the mounting block 501 away from the force-bearing block 505 is fixed with a buffer post 502 to limit the movement of the mounting block 501. When the blocking block 504 moves into the mounting block 501, the blocking block 504 drives the blocking rod 507 to move, so that the blocking rod 507 cooperates with the mounting block 501 to limit the blocking block 504 and prevent the blocking block 504 from entering the slot completely. It also cooperates with the heat treatment furnace body 1 through the buffer column 502, so that the buffer column 502 contacts the inside of the heat treatment furnace body 1 on the side near the sealing door 2, preventing the storage plate 3 from being ejected directly from the inside of the heat treatment furnace body 1 when it moves to the outside of the heat treatment furnace body 1.

[0026] refer to Figure 13 and Figure 14 As shown, a rotating rod 509 is rotatably connected inside the heat treatment furnace body 1, and several rotating plates 510 are fixed on the outer wall of the rotating rod 509. The rotating plate 510 is elliptical and is eccentrically fixed to the outer wall of the rotating rod 509. Rotate the rotating rod 509, which drives the rotating plate 510 to rotate. The end of the rotating plate 510 away from the rotating rod 509 contacts the side of the blocking block 504 away from the force-bearing block 505, so that the main inclined surface of the blocking block 504 cooperates with the secondary inclined surface of the force-bearing block 505. The blocking block 504 moves into the interior of the mounting block 501. At the same time, the blocking block 504 drives the mounting block 501 to move closer to the pushing mechanism 4. The mounting block 501 drives the storage plate 3 to move closer to the pushing mechanism 4.

[0027] refer to Figure 13 and Figure 14 As shown, a gear 506 is also fixed to the outer wall of the rotating rod 509. A rack 511 is provided on the side of the gear 506. The rack 511 is inserted into the interior of the heat treatment furnace body 1. The end of the rack 511 away from the gear 506 extends to the outside of the heat treatment furnace body 1. Pushing the rack 511 to move, the rack 511 drives the gear 506 to rotate, the gear 506 drives the rotating rod 509 to rotate, and the rotating rod 509 drives several rotating plates 510 to rotate.

[0028] The rack 511 is pushed to move, which drives the gear 506 to rotate. The gear 506 drives the rotating rod 509 to rotate, which drives several rotating plates 510 to rotate. The ends of the rotating plates 510 away from the rotating rod 509 contact the sides of several blocking blocks 504 away from several force-bearing blocks 505, so that the main inclined surfaces of the blocking blocks 504 and the secondary inclined surfaces of the force-bearing blocks 505 cooperate. The blocking blocks 504 move into the interior of the mounting blocks 501. At the same time, the blocking blocks 504 drive the mounting blocks 501 to move closer to the pushing mechanism 4. The mounting blocks 501 drive the storage plates 3 to move closer to the pushing mechanism 4. The pushing mechanism 4 pushes the storage plates 3 to the outside of the heat treatment furnace body 1.

[0029] Working principle: When it is necessary to remove several storage plates 3 individually, push the storage plate 3, the storage plate 3 drives the push rod 403 to move, the push rod 403 drives the transmission block 402 to move, the transmission block 402 drives the limiting groove 411 to move, the limiting groove 411 cooperates with the slide rod 410, the slide rod 410 slides along the inside of the limiting groove 411, after the slide rod 410 moves along the inclined surface of the sliding groove of the limiting plate 414, the slide rod 410 moves to one end close to the first spring 407, so that the limiting groove 411 moves from the inside of the V-shaped groove to one end close to the first spring 407, the first spring 407 releases its elastic force to push the transmission block 402 to move inside the fixed frame 401, the transmission block 402 pushes the push rod 403 to move, the push rod 403 pushes the storage plate 3 to move, and pushes the storage plate 3 to move to the outside of the heat treatment furnace body 1; When several storage plates 3 need to be removed simultaneously, the rack 511 is pushed to move, the rack 511 drives the gear 506 to rotate, the gear 506 drives the rotating rod 509 to rotate, the rotating rod 509 drives several rotating plates 510 to rotate, and the ends of several rotating plates 510 away from the rotating rod 509 contact the sides of several blocking blocks 504 away from several force-bearing blocks 505, so that the main inclined surfaces of several blocking blocks 504 cooperate with the secondary inclined surfaces of several force-bearing blocks 505, and several blocking blocks 504 move into the interior of several mounting blocks 501. At the same time, several blocking blocks 504 drive several mounting blocks 501 to move closer to the pushing mechanism 4, and several mounting blocks 501 drive several storage plates 3 to move closer to the pushing mechanism 4. The pushing mechanism 4 pushes several storage plates 3 to the outside of the heat treatment furnace body 1 simultaneously.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A pre-oxidation heat treatment furnace for processing gas spring piston rods, comprising a heat treatment furnace body (1), wherein a heating chamber is formed by an inward recess in the middle of the heat treatment furnace body (1), and a sealing door (2) for sealing the heating chamber is provided on the side of the heat treatment furnace body (1), and a plurality of storage plates (3) for storing the gas spring piston rods are provided inside the heating chamber, characterized in that, The storage plate (3) is also provided with a pushing mechanism (4) to drive it to move. The pushing mechanism (4) includes a fixed frame (401) fixed inside the heat treatment furnace body (1) and a locking plate (405) fixed at the bottom of the storage plate (3). A transmission block (402) is slidably connected in the middle of the fixed frame (401). A push rod (403) for pushing the storage plate (3) is also fixed on the side of the transmission block (402) near the storage plate (3). An ejection mechanism is provided between the transmission block (402) and the locking plate (405). Below the storage plate (3) is also provided an assist mechanism (5) to increase the moving distance of the storage plate (3).

2. The pre-oxidation heat treatment furnace for processing gas spring piston rods according to claim 1, characterized in that, The ejection mechanism includes a positioning plate (406) rotatably mounted on the top of the fixed frame (401). A slide rod (410) is rotatably connected to one end of the positioning plate (406) away from the fixed frame (401). A limiting groove (411) is also provided on the top of the transmission block (402) to facilitate the sliding of the slide rod (410). A first spring (407) is also fixed between the transmission block (402) and the fixed frame (401). The limiting groove (411) is heart-shaped, the slide rod (410) is inserted inside the limiting groove (411), and the end of the push rod (403) away from the storage plate (3) passes through the fixed frame (401) and is fixed to the transmission block (402).

3. The pre-oxidation heat treatment furnace for processing gas spring piston rods according to claim 2, characterized in that, The bottom of the transmission block (402) is also fixed with two extension plates (409), and a rotating shaft (408) is fixed between the two extension plates (409). The outer wall of the rotating shaft (408) is also rotatably connected with two locking rods (404). The end of the two locking rods (404) away from the rotating shaft (408) is also provided with a hook that matches the locking plate (405). The bottom of the transmission block (402) is also fixed with a stroke block (412), and two connecting plates (415) are fixed on the side of the two levers (404) away from the hook. A transmission rod (416) is also fixed between the two connecting plates (415). A groove is provided in the middle of the stroke block (412) to facilitate the sliding of the transmission rod (416).

4. The pre-oxidation heat treatment furnace for processing gas spring piston rods according to claim 2, characterized in that, Both sides of the transmission block (402) are fixed with inner rods (413), and the inner wall of the fixed frame (401) is also provided with a positioning groove for sliding to facilitate the movement of the inner rods (413). The limiting groove (411) is also fixed inside a limiting plate (414), and the limiting plate (414) is also provided with an inclined surface at one end near the push rod (403).

5. The pre-oxidation heat treatment furnace for processing gas spring piston rods according to claim 1, characterized in that, The assist mechanism (5) includes a mounting block (501) fixed to the bottom of the storage plate (3) and a force-bearing block (505) fixed to the inner wall of the heat treatment furnace body (1). A second spring (503) is also fixed between the mounting block (501) and the heat treatment furnace body (1). A blocking block (504) is also provided on the side of the mounting block (501) near the force-bearing block (505). The blocking block (504) is provided with a main inclined surface at one end away from the mounting block (501), and the force-bearing block (505) is also provided with a secondary inclined surface that is adapted to the main inclined surface on one side away from the heat treatment furnace body (1).

6. The pre-oxidation heat treatment furnace for processing gas spring piston rods according to claim 5, characterized in that, The mounting block (501) has a slot inside that facilitates the movement of the blocking block (504). A third spring (508) is also fixed inside the slot. The end of the blocking block (504) away from the main inclined surface is inserted into the slot. The top of the blocking block (504) is also fixed with a blocking rod (507) to limit its movement, and the end of the mounting block (501) away from the force-bearing block (505) is fixed with a buffer post (502) to limit the movement of the mounting block (501).

7. A pre-oxidation heat treatment furnace for processing gas spring piston rods according to claim 6, characterized in that, The interior of the heat treatment furnace body (1) is also rotatably connected to a rotating rod (509), and the outer wall of the rotating rod (509) is also fixed with several rotating plates (510). The rotating plate (510) is elliptical and is eccentrically fixed to the outer wall of the rotating rod (509).

8. A pre-oxidation heat treatment furnace for processing gas spring piston rods according to claim 7, characterized in that, The outer wall of the rotating rod (509) is also fixed with a gear (506), and a rack (511) is provided on the side of the gear (506). The rack (511) is inserted into the interior of the heat treatment furnace body (1), and the end of the rack (511) away from the gear (506) extends to the outside of the heat treatment furnace body (1).

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