Heat treatment furnace feeding device

Abstract

The utility model relates to the field of heat treatment heating furnace especially relates to a heat treatment heating furnace feeding device that constructs the linkage between the furnace door opening and closing and sample movement to realize sample quick feeding and material taking, including heating furnace, the furnace mouth of heating furnace is rotationally arranged with furnace door, including clamping mechanism and feeding mechanism, clamping mechanism sets up on feeding mechanism, including drive mechanism, one end of drive mechanism is hinged with furnace door, the other end of drive mechanism is hinged with feeding mechanism, including telescopic mechanism, telescopic mechanism one end fixedly arranged on the outer wall of heating furnace, the other end of telescopic mechanism is hinged with feeding mechanism, and the telescopic direction of telescopic mechanism is along the opening direction of furnace mouth setting. The utility model is especially suitable for the occasion of heating furnace quick feeding.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment heating furnaces, and in particular to a feeding device for a heat treatment heating furnace. Background Technology

[0002] Heating furnaces are commonly used experimental equipment in the fields of materials science and metallurgy. When studying the microstructure and phase transformation laws of materials, it is necessary to heat the materials to temperatures exceeding 1000 degrees Celsius. Experimental samples often need to be placed into or removed from the furnace at high temperatures. To avoid significant temperature drops inside the furnace and on the materials themselves during these processes, it is essential to process samples as quickly as possible, i.e., rapidly opening the furnace door, rapidly inserting or removing the sample, and rapidly closing the furnace door.

[0003] Taking the design in publication number CN115635040A, entitled "A Feeding Device for a Heat Treatment Furnace for Wear-Resistant Alloy Materials," as an example, it involves the following: a heating furnace is installed on one side of the top of a base, and a picking mechanism is installed at the opening of the heating furnace. A conveying mechanism for driving the picking mechanism is installed on the other side of the top of the base. The output end of a power tool extends, cooperating with a connecting frame to drive the first and second connecting rods to rotate, allowing the two clamping blocks to smoothly clamp the wear-resistant alloy material. This reduces the need for manual manipulation of the wear-resistant alloy material using a picking rod, thus speeding up the material picking process. However, this design involves a complex hydraulic system, requires custom manufacturing, and occupies a large space. It is only suitable for the specific working conditions of feeding materials in a heat treatment furnace for wear-resistant alloy materials. Furthermore, the design is not fast enough in terms of the continuity of the series of actions—opening the furnace door, feeding or removing samples, and closing the furnace door—and cannot avoid the problem of rapid temperature drop inside the furnace and the material itself. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a heat treatment heating furnace feeding device that establishes a linkage between furnace door opening and closing and sample movement, thereby realizing rapid sample feeding and unloading.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a feeding device for a heat treatment heating furnace, including a heating furnace, with a furnace door rotatably installed at the furnace opening; including a clamping mechanism and a feeding mechanism, the clamping mechanism being installed on the feeding mechanism; including a driving mechanism, one end of the driving mechanism being hinged to the furnace door, and the other end of the driving mechanism being hinged to the feeding mechanism; including a telescopic mechanism, one end of the telescopic mechanism being fixedly installed on the outer wall of the heating furnace, and the other end of the telescopic mechanism being hinged to the feeding mechanism, the telescopic direction of the telescopic mechanism being set along the opening direction of the furnace opening;

[0006] When a sample needs to be fed in, the furnace door is opened and the feeding mechanism is driven by the drive mechanism to transport the clamping mechanism into the heating furnace. After the clamping mechanism is released and the sample is put down, the clamping mechanism is driven away from the sample by the telescopic mechanism. Finally, the furnace door is closed and the clamping mechanism and feeding mechanism are driven by the drive mechanism to exit the heating furnace.

[0007] When it is necessary to remove the sample, the furnace door is opened and the feeding mechanism is driven by the drive mechanism to transport the clamping mechanism into the heating furnace. After the clamping mechanism is driven close to the sample by the telescopic mechanism, the clamping mechanism clamps the sample. Finally, the furnace door is closed and the clamping mechanism and the feeding mechanism are driven by the drive mechanism to exit the heating furnace.

[0008] Furthermore, the drive mechanism includes a furnace door linkage, one end of which is hinged to the furnace door, and the other end of which is hinged to the feeding mechanism.

[0009] Furthermore, the feeding mechanism includes a drive rod, a fixed connecting rod, a first right-angle connecting rod, a second right-angle connecting rod, a first end connecting rod, and a second end connecting rod; one end of the fixed connecting rod is fixedly mounted on the telescopic mechanism, and the other end of the fixed connecting rod is hinged to the first right-angle connecting rod; one end of the drive rod is hinged to the furnace door connecting rod, and the other end of the drive rod is hinged to the second right-angle connecting rod, and the drive rod is rotatably mounted on the telescopic mechanism; one end of the first right-angle connecting rod is hinged to the second end connecting rod, and one end of the second right-angle connecting rod is hinged to the first end connecting rod, and the first right-angle connecting rod and the second right-angle connecting rod are rotatably connected; the first end connecting rod and the second end connecting rod are hinged together.

[0010] Furthermore, the clamping mechanism includes a clamping jaw base, a left clamping jaw, and a right clamping jaw. The clamping jaw base is Y-shaped, and the bottom of the clamping jaw base is fixedly mounted on the second end connecting rod. The left clamping jaw and the right clamping jaw are respectively hinged to the left and right sides of the clamping jaw base.

[0011] Furthermore, the clamping mechanism includes a left jaw link, a right jaw link, and a slider. The slider is slidably disposed at the bottom of the jaw base. The two ends of the left jaw link are hinged to the left jaw and the slider, respectively, and the two ends of the right jaw link are hinged to the right jaw and the slider, respectively.

[0012] Furthermore, the clamping mechanism includes a first sliding sleeve, a second sliding sleeve, and a slider rope. The first sliding sleeve and the second sliding sleeve are hinged together. The first sliding sleeve is slidably mounted on the second end connecting rod, and the second sliding sleeve is slidably mounted on the first right-angle connecting rod. One end of the slider rope is connected to the slider, and the other end of the slider rope is connected to the first sliding sleeve.

[0013] Furthermore, the clamping mechanism includes a return spring, one end of which is connected to the slider, and the other end of which is connected to the gripper base.

[0014] Furthermore, the telescopic mechanism includes an inner slide rod and an outer slide rod. The outer slide rod is sleeved outside the inner slide rod, and the outer slide rod and the inner slide rod are slidably connected. One end of the inner slide rod is fixed to the outer wall of the heating furnace, and the outer slide rod is hinged to the feeding mechanism.

[0015] Furthermore, the inner slide rod is provided with at least two positioning holes, which are arranged in a straight line along the opening direction of the furnace mouth, and the outer slide rod is provided with corresponding positioning holes; it also includes a locking pin, which is provided in the positioning holes of the inner slide rod and the outer slide rod to lock the positions of the inner slide rod and the outer slide rod.

[0016] Furthermore, the telescopic mechanism includes a limiting spring clip, which has a V-shaped structure; the inner slide rod has a hollow structure, the limiting spring clip is disposed inside the inner slide rod, and the locking pin is disposed on the limiting spring clip.

[0017] The beneficial effects of this utility model are:

[0018] I. By establishing a linkage between the opening and closing of the furnace door and the movement of the sample, when a sample needs to be fed in, opening the furnace door causes the drive mechanism, feeding mechanism, and clamping mechanism to move in sequence, enabling the sample held by the clamping mechanism to be quickly fed into the heating furnace. Subsequently, by adjusting the position of the clamping mechanism through a telescopic mechanism, moving the clamping mechanism away from the sample, the feeding mechanism and clamping mechanism can be quickly withdrawn from the heating furnace when the furnace door is closed. The entire process of feeding the sample is smooth, fast, and simple to operate, greatly reducing the time the furnace door is open, thus reducing heat loss from the heating furnace.

[0019] Second, by establishing a linkage between the opening and closing of the furnace door and the movement of the sample, when the sample needs to be removed, opening the furnace door causes the drive mechanism, feeding mechanism, and clamping mechanism to move in sequence, quickly feeding the sample held by the clamping mechanism into the heating furnace. Subsequently, the position of the clamping mechanism is adjusted by the telescopic mechanism, bringing it close to and holding the sample. This allows the feeding mechanism, clamping mechanism, and the heat-treated sample to quickly exit the heating furnace when the furnace door is closed. The entire process of removing the sample is seamless, rapid, and simple to operate, significantly reducing the time required for sample removal, ensuring the sample temperature is as close as possible to the furnace temperature, and minimizing heat loss from the heating furnace.

[0020] Third, the feeding mechanism, through components such as the drive rod, fixed connecting rod, first right-angle connecting rod, and second right-angle connecting rod, constructs a structure that achieves a linkage relationship. This allows the two actions of opening and closing the furnace door to be quickly converted into the actions of driving the clamping mechanism to enter and exit the heating furnace, greatly improving the speed of sample feeding and removal. At the same time, it also simplifies the structure of the feeding mechanism and facilitates its manufacture.

[0021] Fourth, by constructing a linkage between the first sliding sleeve, the second sliding sleeve, the slider rope, the second end connecting rod, and the first right-angle connecting rod, when the second end connecting rod and the first right-angle connecting rod rotate relative to each other, the left and right clamping claws can be clamped and released by the slider rope. This eliminates the need for manual operation of the clamping mechanism and further improves the speed at which the clamping mechanism clamps and releases the sample.

[0022] This invention is particularly suitable for applications requiring rapid material feeding in heating furnaces. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the present invention with the furnace door closed and the sample not yet placed in the heating furnace.

[0024] Figure 2 This is a schematic diagram of the furnace door of this utility model rotating and opening, while the sample moves into the heating furnace in a coordinated manner.

[0025] Figure 3 yes Figure 2 A schematic diagram showing the disassembled drive mechanism, telescopic mechanism, clamping mechanism, and feeding mechanism.

[0026] Figure 4 This is a schematic diagram showing the connection between the clamping mechanism and the feeding mechanism.

[0027] The components in the diagram are labeled as follows: telescopic mechanism 1, inner slide rod 101, limiting spring clip 102, outer sleeve rod 103, feeding mechanism 2, drive rod 201, fixed connecting rod 202, furnace door connecting rod 203, first right-angle connecting rod 204, second right-angle connecting rod 205, first end connecting rod 206, second end connecting rod 207, clamping mechanism 3, left gripper connecting rod 301, gripper base 302, left gripper 303, right gripper 304, return spring 305, right gripper connecting rod 306, slider 307, sample holder 308, sliding sleeve assembly 4, first sliding sleeve 401, second sliding sleeve 402, slider pull rope 403, heating furnace 5, furnace opening 51, furnace door 52. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] like Figures 1 to 4This diagram illustrates an embodiment of the feeding device for a heat treatment furnace. The furnace 5 is a rectangular cabinet structure. The furnace opening 51 is located on the side of the furnace 5, and a furnace door 52 is rotatably mounted on the opening 51. The rotation axis of the furnace door 52 is vertically positioned at the right edge of the opening 51. Inside the furnace 5 is an inner cavity for placing a sample holder 308. Samples can be placed on the sample holder 308 outside the furnace 5, and then the sample holder 308 and the samples on it are fed into the furnace 5 together by the clamping mechanism 3. The sample holder 308 is held by a handle clamped by a left clamping claw 303 and a right clamping claw 304, which is vertically positioned. The handle is thicker at the bottom and thinner at the top, and its specific structure can be a frustum-shaped structure with a certain taper. When the sample holder 308 is initially placed into the heating furnace 5, the left clamping jaw 303 and the right clamping jaw 304 grip the thicker part of the lower end of the holder handle, and the bottom plane of the sample holder 308 is slightly higher than the bottom of the heating furnace 5, ensuring that the sample holder 308 can smoothly enter the heating furnace 5. When the sample holder 308 reaches the designated position, the left clamping jaw 303 and the right clamping jaw 304 release, and the sample holder 308 slides down, with the bottom plane of the sample holder 308 landing on the furnace bottom. The reason for designing the holder handle of the sample holder 308 with a thicker bottom and thinner top is that when the left clamping jaw 303 and the right clamping jaw 304 subsequently clamp and remove the sample holder 308, the thinner part of the top of the handle serves as the clamping part, ensuring that the left clamping jaw 303 and the right clamping jaw 304 can smoothly clamp the handle, thereby bringing out the sample holder 308.

[0030] like Figure 2As shown, the telescopic mechanism 1 includes an inner slide rod 101, a limiting spring clip 102, and an outer sleeve rod 103. The inner slide rod 101 is fixedly installed on the left side wall of the heating furnace 5. The inner slide rod 101 is a hollow rod structure with a right-angle bend. Specifically, one end of the inner slide rod 101 is fixedly connected to the left side wall of the heating furnace 5. The inner slide rod 101 is then bent at a right angle towards the opening of the furnace opening 51, that is, the bend is parallel to the left side wall of the heating furnace 5, thus forming a right-angle bend structure. An outer sleeve rod 103 is installed around the inner slide rod 101. The outer sleeve rod 103 can slide along the inner slide rod 101 in the direction of the opening of the furnace opening 51. The inner slide rod 101 has two positioning holes arranged in a straight line, with the straight line arrangement aligned with the opening direction of the furnace opening 51. Correspondingly, the outer sleeve rod has two positioning holes. The hollow inner cavity of the inner slide rod 101 is equipped with a limiting spring clip 102. The limiting spring clip 102 is V-shaped and has a locking pin. The limiting spring clip 102 engages with the hollow inner cavity of the inner slide rod 101, while the locking pin passes upward through the positioning holes of the inner slide rod 101 and the outer slide rod 103, thereby locking the positions of the inner slide rod 101 and the outer slide rod 103 and preventing the outer slide rod 103 from sliding relative to the inner slide rod 101. When it is necessary to adjust the relative position between the outer rod 103 and the inner slide rod 101, press the locking pin to allow it to exit from the positioning hole of the outer rod 103. Then slide the outer rod 103 to the new position along the direction of the outer rod 103 and align the new positioning hole of the outer rod 103 with the positioning hole of the inner slide rod 101. Then, under the elastic force of the limiting spring clip 102, the locking pin passes through the new positioning hole of the outer rod 103 again, thus locking the outer rod 103 and the inner slide rod 101 again.

[0031] like Figure 2 As shown, the drive mechanism includes a furnace door connecting rod 203. One end of the furnace door connecting rod 203 is hinged to the furnace door 52, and the specific hinge point is as follows. Figures 1 to 3 As shown, this is the side of the furnace door 52 away from the aforementioned rotation axis. The other end of the furnace door connecting rod 203 is hinged to the end of the drive rod 201. Figure 3In the illustrated embodiment, the drive rod 201 has a V-shaped bent structure. The right end of the drive rod 201 is hinged to the furnace door connecting rod 203, and the left end of the drive rod 201 is hinged to the end of the second right-angle connecting rod 205. The bent portion in the middle of the V-shaped drive rod 201 is rotatably connected to the outer sleeve rod 103. Specifically, the rotatable connection can be achieved by rotating the downward-protruding pivot of the bent portion of the drive rod 201 within the pivot hole of the outer sleeve rod 103. The left end of the fixed connecting rod 202 is fixedly mounted on the outer sleeve rod 103, and the right end of the fixed connecting rod 202 is hinged to the end of the first right-angle connecting rod 204. Both the first right-angle connecting rod 204 and the second right-angle connecting rod 205 are right-angle bent rod structures. The bent portion in the middle of the first right-angle connecting rod 204 and the bent portion in the middle of the second right-angle connecting rod 205 are rotatably connected by a pivot. The other end of the first right-angle connecting rod 204 is hinged to the second end connecting rod 207, and the other end of the second right-angle connecting rod 205 is hinged to the first end connecting rod 206. The second end connecting rod 207 and the first end connecting rod 206 are hinged together. Thus, the drive mechanism includes two parallelogram drive structures: a first parallelogram drive structure composed of the drive rod 201, the fixed connecting rod 202, the first right-angle connecting rod 204, and the second right-angle connecting rod 205; and a second parallelogram drive structure composed of the first right-angle connecting rod 204, the second right-angle connecting rod 205, the first end connecting rod 206, and the second end connecting rod 207. The connection point between the two parallelogram structures is the middle bend of the first right-angle connecting rod 204 and the middle bend of the second right-angle connecting rod 205. When the furnace door linkage 203 opens or closes with the furnace door 52, it transmits the driving force from the furnace door 52 to the drive rod 201. The drive rod 201 then drives the two parallelogram-shaped drive structures to extend or retract. When the two parallelogram-shaped drive structures extend, the clamping mechanism 3, such as the gripper base 302, provided on the second end linkage 207, is moved into the heating furnace 5. When the two parallelogram-shaped drive structures retract, the gripper base 302 and other components provided on the second end linkage 207 are moved out of the heating furnace 5.

[0032] like Figure 3 and Figure 4As shown, the gripper base 302 is Y-shaped. The bottom of the gripper base 302 is fixedly mounted on the end of the second end connecting rod 207. A left gripper 303 and a right gripper 304 are hinged to the left and right corners of the Y-shaped gripper base 302, respectively. The left gripper 303 and right gripper 304 clamp or release the sample by rotation. A slider 307 is slidably mounted on the bottom of the gripper base 302. The two ends of the left gripper connecting rod 301 are hinged to the left gripper 303 and the slider 307, respectively, and the two ends of the right gripper connecting rod 306 are hinged to the right gripper 304 and the slider 307, respectively. Specifically, the slider 307 is sleeved on the bottom of the gripper base 302 and can slide along the bottom of the gripper base 302. One end of the return spring 305 is connected to the slider 307, and the other end of the return spring 305 is connected to the gripper base 302.

[0033] The sliding sleeve assembly 4 consists of a first sliding sleeve 401 and a second sliding sleeve 402, wherein the first sliding sleeve 401 and the second sliding sleeve 402 are hinged together. The first sliding sleeve 401 is slidably disposed on the second end connecting rod 207, and the second sliding sleeve 402 is slidably disposed on the first right-angle connecting rod 204. One end of the slider pull rope 403 is connected to the slider 307, and the other end of the slider pull rope 403 is connected to the first sliding sleeve 401. As a preferred method of sliding connection between the first sliding sleeve 401 and the second end connecting rod 207, a collar structure can be provided at the end of the first sliding sleeve 401. The collar structure is sleeved on the second end connecting rod 207, and the first sliding sleeve 401 is slidably disposed on the second end connecting rod 207 through the collar structure. The sliding connection between the second sliding sleeve 402 and the first right-angle connecting rod 204 can also adopt this connection method. At this point, when the angle between the second end connecting rod 207 and the first right-angle connecting rod 204 changes, the angle between the first sliding sleeve 401 and the second sliding sleeve 402 also changes accordingly, causing the first sliding sleeve 401 to slide on the second end connecting rod 207. The sliding first sliding sleeve 401 will tighten the slider rope 403, thereby pulling the slider 307 to slide closer to the first sliding sleeve 401. This allows the left clamping claw 303 and the right clamping claw 304 to move away from each other, that is, the clamping claws of the clamping mechanism 3 are in the open state. The open state of the clamping claws of the clamping mechanism 3 corresponds to the state where the furnace door 52 is opened to the maximum position. Conversely, when the first sliding sleeve 401 slides in the opposite direction, that is, when the furnace door 52 is closed, the sliding first sliding sleeve 401 will loosen the slider rope 403. Under the action of the return spring 305, the slider 307 slides away from the first sliding sleeve 401, thereby realizing that the left clamping claw 303 and the right clamping claw 304 move closer to each other, that is, the clamping claws of the clamping mechanism 3 are clamped.

[0034] In actual use, firstly, the furnace opening 51 of the heating furnace 5 is covered by the furnace door 52, and the furnace opening 51 is in a closed state. At this time, the feeding mechanism 2 and the clamping mechanism 3 are outside the heating furnace 5. The left clamping claw 303 and the right clamping claw 304 of the clamping mechanism 3 are in a clamping state, clamping the sample holder 308, on which the sample holder 308 is placed. Next, the furnace door 52 is opened. As the furnace door 52 rotates and opens, the furnace door 52 drives the furnace door connecting rod 203 to move. The furnace door connecting rod 203 drives the driving rod 201 to rotate. The rotating driving rod 201 causes the first right-angle connecting rod 204 and the second right-angle connecting rod 205 to move towards the furnace opening 51. At the same time, the first right-angle connecting rod 204 and the second right-angle connecting rod 205 drive the first end connecting rod 206 and the second end connecting rod 207 to move into the heating furnace 5. As the first end connecting rod 206 and the second end connecting rod 207 move into the heating furnace 5, the first sliding sleeve 401 and the second sliding sleeve 402 of the sliding sleeve assembly 4 slide, thereby causing the first sliding sleeve 401 to pull the slider 307 towards the first sliding sleeve 401 via the slider pull rope 403, thus adjusting the left clamping claw 303 and the right clamping claw 304 to the loosened state. Subsequently, the sample holder 308 descends to the bottom surface inside the heating furnace 5 under the action of gravity. Then, by pressing the locking pin of the limiting spring clip 102, the outer sleeve rod 103 is moved away from the inner sliding rod 101, that is, the fixing connecting rod 202 drives the left clamping claw 303 and the right clamping claw 304 to move away from the sample and the sample holder 308. Then, the locking pin locks the outer sleeve rod 103 and the inner sliding rod 101. Finally, during the process of closing the furnace door 52, the furnace door 52 drives the furnace door linkage 203 to move, and in conjunction with it drives the drive rod 201, the first right-angle linkage 204, the second end linkage 207, the left clamping claw 303 and the right clamping claw 304 to retract from the heating furnace 5.

[0035] When it is necessary to remove the sample, simply follow these steps: First, open the furnace door 52 to allow the left clamping claw 303 and the right clamping claw 304 to be transported into the heating furnace 5. Then, drive the outer sleeve rod 103 to move towards the inner slide rod 101. Next, close the furnace door 52 and drive the left clamping claw 303 and the right clamping claw 304 to clamp the sample holder 308. As the furnace door 52 closes, the sample holder 308 will be removed from the heating furnace 5.

Claims

1. A feeding device for a heat treatment heating furnace, comprising a heating furnace (5), wherein a furnace door (52) is rotatably provided at the furnace opening (51) of the heating furnace (5); comprising a clamping mechanism (3) and a feeding mechanism (2), wherein the clamping mechanism (3) is disposed on the feeding mechanism (2), characterized in that: Includes a drive mechanism, one end of which is hinged to the furnace door (52), and the other end of which is hinged to the feeding mechanism (2); Includes a telescopic mechanism (1), one end of which is fixedly installed on the outer wall of the heating furnace (5), and the other end of which is hinged to the feeding mechanism (2). The telescopic direction of the telescopic mechanism (1) is set along the opening direction of the furnace mouth (51). When it is necessary to send in the sample, open the furnace door (52) and drive the feeding mechanism (2) through the drive mechanism to send the clamping mechanism (3) into the heating furnace (5). After releasing the clamping mechanism (3) and putting down the sample, drive the clamping mechanism (3) away from the sample through the telescopic mechanism (1). Finally, close the furnace door (52) and drive the clamping mechanism (3) and the feeding mechanism (2) through the drive mechanism to exit the heating furnace (5). When it is necessary to remove the sample, open the furnace door (52) and drive the feeding mechanism (2) through the drive mechanism to transport the clamping mechanism (3) into the heating furnace (5). After the clamping mechanism (3) is driven close to the sample through the telescopic mechanism (1), the clamping mechanism (3) clamps the sample. Finally, close the furnace door (52) and drive the clamping mechanism (3) and the feeding mechanism (2) through the drive mechanism to exit the heating furnace (5).

2. The feeding device for the heat treatment heating furnace as described in claim 1, characterized in that: The drive mechanism includes a furnace door link (203), one end of which is hinged to the furnace door (52), and the other end of which is hinged to the feeding mechanism (2).

3. The feeding device for the heat treatment heating furnace as described in claim 2, characterized in that: The feeding mechanism (2) includes a drive rod (201), a fixed connecting rod (202), a first right-angle connecting rod (204), a second right-angle connecting rod (205), a first end connecting rod (206), and a second end connecting rod (207). One end of the fixed link (202) is fixedly mounted on the telescopic mechanism (1), and the other end of the fixed link (202) is hinged to the first right-angle link (204); One end of the drive rod (201) is hinged to the furnace door connecting rod (203), and the other end of the drive rod (201) is hinged to the second right-angle connecting rod (205). The drive rod (201) is rotatably mounted on the telescopic mechanism (1). One end of the first right-angle link (204) is hinged to the second end link (207), and one end of the second right-angle link (205) is hinged to the first end link (206). The first right-angle link (204) and the second right-angle link (205) are rotatably connected. The first end link (206) and the second end link (207) are hinged together.

4. The feeding device for the heat treatment heating furnace as described in claim 3, characterized in that: The clamping mechanism (3) includes a clamping base (302), a left clamping jaw (303) and a right clamping jaw (304). The clamping base (302) is Y-shaped. The bottom of the clamping base (302) is fixedly mounted on the second end connecting rod (207). The left clamping jaw (303) and the right clamping jaw (304) are respectively hinged to the left and right sides of the clamping base (302).

5. The feeding device for the heat treatment heating furnace as described in claim 4, characterized in that: The clamping mechanism (3) includes a left jaw link (301), a right jaw link (306) and a slider (307). The slider (307) is slidably disposed at the bottom of the jaw base (302). The two ends of the left jaw link (301) are hinged to the left jaw (303) and the slider (307) respectively. The two ends of the right jaw link (306) are hinged to the right jaw (304) and the slider (307) respectively.

6. The feeding device for the heat treatment heating furnace as described in claim 5, characterized in that: The clamping mechanism (3) includes a first sliding sleeve (401), a second sliding sleeve (402), and a slider pull rope (403). The first sliding sleeve (401) and the second sliding sleeve (402) are hinged together. The first sliding sleeve (401) is slidably mounted on the second end connecting rod (207), and the second sliding sleeve (402) is slidably mounted on the first right-angle connecting rod (204). One end of the slider pull rope (403) is connected to the slider (307), and the other end of the slider pull rope (403) is connected to the first sliding sleeve (401).

7. The feeding device for a heat treatment heating furnace as described in claim 6, characterized in that: The clamping mechanism (3) includes a return spring (305), one end of which is connected to the slider (307), and the other end of which is connected to the gripper base (302).

8. The feeding device for a heat treatment heating furnace as described in any one of claims 1 to 7, characterized in that: The telescopic mechanism (1) includes an inner slide rod (101) and an outer slide rod (103). The outer slide rod (103) is sleeved outside the inner slide rod (101). The outer slide rod (103) and the inner slide rod (101) are slidably arranged together. One end of the inner slide rod (101) is fixedly arranged on the outer wall of the heating furnace (5). The outer slide rod (103) is hinged to the feeding mechanism (2).

9. The feeding device for a heat treatment heating furnace as described in claim 8, characterized in that: The inner slide rod (101) is provided with at least two positioning holes, which are arranged in a straight line. The direction of the straight line arrangement is along the opening direction of the furnace opening (51). The outer slide rod (103) is provided with corresponding positioning holes. The inner slide rod (101) is provided with a locking pin, which is provided in the positioning holes of the inner slide rod (101) and the outer slide rod (103) to realize the position locking of the inner slide rod (101) and the outer slide rod (103).

10. The feeding device for a heat treatment heating furnace as described in claim 8, characterized in that: The telescopic mechanism (1) includes a limiting spring clip (102), which has a V-shaped structure; the inner slide rod (101) has a hollow structure, the limiting spring clip (102) is located inside the inner slide rod (101), and the locking pin is located on the limiting spring clip (102).

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