Vacuum heat treatment furnace

Abstract

The utility model discloses a vacuum heat treatment furnace, belongs to the technical field of sintering equipment, and is used for solving the problem of how to improve the positioning convenience and accuracy of a feeding trolley. The vacuum heat treatment furnace comprises a furnace body, a rack and a guide rail, the furnace body is fixed on the rack; each guide rail comprises two guide rail main bodies and a blocking rod, each guide rail main body comprises a linear section and an arc-shaped section, the linear sections are fixedly connected with the rack, the linear sections of the two guide rail main bodies are parallel to each other, and the arc-shaped sections are fixedly connected with the ends, deviating from the rack, of the linear sections and are in smooth transition; the distance between the arc-shaped sections of the two guide rail bodies is gradually reduced in the direction towards the furnace door to form a horn mouth structure, the blocking rod is fixed between the two linear sections and used for positioning the feeding trolley, and a buffering device is arranged on the side, facing the arc-shaped sections, of the blocking rod. The vacuum heat treatment furnace can guide the feeding trolley to be automatically centered through the guide rail body and the buffer device, the feeding operation efficiency is improved, impact energy can be effectively absorbed, and the service life of the guide rail is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sintering equipment, in particular to a vacuum heat treatment furnace. BACKGROUND

[0002] When feeding, the conventional vacuum heat treatment furnace is easy to collide with the vacuum heat treatment furnace due to the absence of guide rails or other devices for limiting the feeding trolley running direction, thereby damaging the vacuum heat treatment furnace. Some existing vacuum heat treatment furnaces, such as the linear guide rail type vacuum heat treatment furnace disclosed in the publication No. CN202420146U, are equipped with guide rails. However, since the guide rails are linear, it is difficult for the feeding trolley to enter the guide rail when cooperating, and the operation is not convenient. At the same time, the guide rail lacks positioning of the feeding trolley in the length direction, and it is difficult for the operator to determine whether the feeding trolley is in place.

[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. CONTENT OF THE UTILITY MODEL

[0004] (I) Technical problem solved

[0005] The present application provides a vacuum heat treatment furnace, which can solve the problem of how to improve the convenience and accuracy of positioning the feeding trolley in the prior art.

[0006] (II) Technical solution

[0007] To solve the above technical problems, the present application provides the following technical solutions:

[0008] A vacuum heat treatment furnace is provided, which comprises a furnace body, a rack and a guide rail.

[0009] The furnace body is fixed on the rack.

[0010] The guide rail comprises a guide rail body and a stop lever. The number of the guide rail body is two. The guide rail body comprises a linear segment and an arc segment. The linear segment is fixedly connected with the rack. The linear segments of the two guide rail bodies are parallel to each other. The arc segment is fixedly connected with one end of the linear segment away from the rack, and smoothly transitions. The spacing between the arc segments of the two guide rail bodies gradually decreases in the direction towards the furnace door, forming a horn structure. The stop lever is fixed between the two linear segments for positioning the feeding trolley. The stop lever is provided with a buffer device on the side towards the arc segment.

[0011] In some embodiments, the guide rail body further comprises a connecting plate and a reinforcing rib, the connecting plate is perpendicular to and fixedly connected to one end of the linear segment away from the arc segment, the connecting plate is detachably fixedly connected to the rack, and the reinforcing rib is connected to the angle formed between the connecting plate and the linear segment.

[0012] In some embodiments, the rack comprises four bases and support rods, the bases are fixedly connected by the support rods to form a three-dimensional frame, and the connecting plates of the two guide rail bodies are fixed on two adjacent bases, respectively.

[0013] In some embodiments, the stop rod is arranged in parallel with two of the support rods, and the linear segment is arranged in parallel with or collinearly with the other two support rods.

[0014] In some embodiments, the buffer device is made of rubber and has a cylindrical shape, one end of the buffer device is attached to the stop rod, and the buffer device is fixedly connected to the stop rod by a countersunk bolt.

[0015] In some embodiments, the buffer device is internally provided with an axially extending inner hole, and the inner hole is provided with a spring.

[0016] In some embodiments, the linear segment and the arc segment are integrally formed or welded.

[0017] In some embodiments, the vacuum heat treatment furnace further comprises a feeding trolley, and the feeding trolley is provided with a roller on the front side.

[0018] In some embodiments, the bottom of the feeding trolley is provided with a positioning block configured to be in contact with the buffer device.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the technical scheme provided by the embodiments of the present application has at least the following beneficial effects:

[0021] The vacuum heat treatment furnace of the present application can effectively guide the automatic centering of the feeding trolley by setting the guide rail body with arc segments, two of which form a tapered horn structure, thereby significantly reducing the difficulty of loading the rail and improving the efficiency of feeding operation.

[0022] The vacuum heat treatment furnace of the present application is provided with a buffer device on the stop rod structure, which can not only ensure the accurate positioning of the feeding trolley, but also effectively absorb impact energy and prolong the service life of the guide rail through the synergistic effect of rigid positioning and elastic buffering. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0024] Figure 1 is a schematic view of a vacuum heat treatment furnace in the embodiments of the present application;

[0025] Figure 2 is a perspective view of a rack and a guide rail in the embodiments of the present application;

[0026] Figure 3 is a sectional view of the buffer device in the embodiments of the present application in the A section of Figure 1

[0027] Reference signs:

[0028] furnace body 1;

[0029] rack 2, base 21, support rod 22, three-dimensional frame 23;

[0030] guide rail 3, guide rail body 31, straight section 311, arc section 312, horn structure 313, reinforcing rib 314, connecting plate 315;

[0031] stop rod 4, buffer device 41, rubber body 411, countersunk bolt 412, inner hole 413, spring 414;

[0032] feeding trolley 5, roller 51, positioning block 52.

[0033] The above drawings have shown the specific embodiments of the present application, which will be described in more detail hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will further describe the embodiments of the present application in combination with the drawings.

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the scope of protection of the present application.

[0036] ​The guide rail of the existing vacuum heat treatment furnace is generally linear, and the feeding trolley is difficult to enter the guide rail, which is inconvenient to operate. Meanwhile, the guide rail lacks positioning of the feeding trolley in the length direction, and it is difficult for the operator to determine whether the feeding trolley is in place.

[0037] To solve the above technical problems, the embodiment provides a vacuum heat treatment furnace. Figure 1 and Figure 2 As shown in Figure 1 is a schematic diagram of the vacuum heat treatment furnace in the embodiment of the application, Figure 2 is a perspective view of the rack and the guide rail in the embodiment of the application.

[0038] The vacuum heat treatment furnace comprises a furnace body 1, a rack 2 and a guide rail 3.

[0039] The furnace body 1 is fixed on the rack 2. The furnace body 1 can use an existing furnace body structure for realizing sintering function and is fixed on the rack 2 by means of bolt connection or welding. The furnace body 1 generally has an openable furnace door, and feeding can be performed when the furnace door is opened.

[0040] The guide rail 3 comprises a guide rail body 31 and a stop lever 4. The guide rail body 31 is two in number. The guide rail body 31 comprises a linear segment 311 and an arc segment 312. The linear segment 311 is fixedly connected with the rack 2. The linear segments 311 of the two guide rail bodies 31 are parallel to each other. The arc segment 312 is fixedly connected with the end of the linear segment 311 away from the rack 2 and is smoothly connected. The spacing between the arc segments 312 of the two guide rail bodies 31 gradually decreases in the direction towards the furnace door to form a horn structure 313. The stop lever 4 is fixed between the two linear segments 311 and is used for positioning the feeding trolley 5. The stop lever 4 is provided with a buffer device 41 on the side towards the arc segment 312.

[0041] Exemplarily, the linear segment 311 and the arc segment 312 are integrally formed by bending process or are welded.

[0042] When feeding, the trolley 5 slides into the horn structure 313 from the guide rail entrance, and the tapered track automatically corrects the offset amount. When the trolley 5 contacts the buffer device 41, the buffer device 41 absorbs kinetic energy, and the stop lever 4 realizes precise positioning by rigid limiting.

[0043] In the above embodiment in which the linear segment 311 is fixedly connected with the rack 2, as shown in Figure 2As shown, the guide rail body 31 further comprises a connecting plate 315 and a reinforcing rib 314, the connecting plate 315 is perpendicular to and fixedly connected with one end of the linear segment 311 away from the arc segment 312, the connecting plate 315 is detachably fixedly connected with the rack 2, and the reinforcing rib 314 is connected at an included angle between the connecting plate 315 and the linear segment 311. For example, the connecting plate 315 is detachably connected with the rack 2 through bolts 317, which facilitates disassembly and maintenance, and makes the guide rail 3 form an independent installation module; the specific thickness of the reinforcing rib 314 can be set as required. In this way, the connecting plate 315 disperses the track load to the main body of the rack 2; the reinforcing rib 314 suppresses torsional deformation of the connecting part through a triangular stable structure, thereby ensuring the geometric accuracy of the guide rail system under repeated impact. At the same time, the guide rail 3 and the rack 2 adopt a split structure design, and the modular installation is realized through the connecting plate 315 and the reinforcing rib 314, which not only ensures the overall structural strength, but also facilitates on-site installation, debugging, maintenance and replacement.

[0044] Further, in order to enhance the support strength of the rack 2, referring to Figure 1 As shown, the rack 2 comprises four bases 21 and support rods 22, the adjacent bases 21 are fixedly connected through the support rods 22, such as welding, to form a three-dimensional frame 23; the connecting plates 315 of the two guide rail bodies 31 are respectively fixed on the adjacent two bases 21. The square layout of the rack 2 forms a stable force transmission path, and the support rods 22 uniformly transmit the guide rail load to the bases 21 and the foundation.

[0045] Further, referring to Figure 1 As shown, the baffle rod 4 is arranged in parallel with two of the support rods 22, and the linear segment 311 is arranged in parallel or collinearly with the other two support rods 22. The linear segment 311 and the support rods 22 are orthogonally arranged to form a three-dimensional positioning reference, which ensures the consistency of the feeding track with the center line of the furnace body 1 and avoids uneven heating in the furnace caused by material offloading; at the same time, the acting force of the pushing trolley 5 on the guide rail 3 can be effectively dispersed on the rack 2, making the guide rail structure more firm.

[0046] In one embodiment of the above-mentioned buffer device 41, referring to Figure 3 As shown, Figure 3 is a sectional view of the buffer device in the embodiment of the present application in the A section of Figure 1 The buffer device 41 is made of rubber and is a cylindrical rubber body 411, one end of which is attached to the baffle rod 4 and is fixedly connected through a countersunk bolt 412. The cylindrical structure provides isotropic buffer characteristics in all directions, and the countersunk bolt 412 avoids stress concentration.

[0047] Further, the buffer device 41 is internally provided with an axially extending inner hole 413, which has a progressive compression characteristic while maintaining sufficient buffer performance.

[0048] Exemplarily, the inner hole 413 is provided with a spring 414 extending along the axial direction of the inner hole 413, so as to form a two-stage buffering structure: the rubber body 411 realizes primary buffering, and the spring 414 provides progressive buffering, and the spring 414 can also guide the axial deformation of the rubber body 411 when being pressed, preventing the rubber body 411 from being invalid due to lateral transition bulging.

[0049] In some embodiments, referring to Figure 1 As shown, the vacuum heat treatment furnace is also provided with a feeding trolley 5, and the feeding trolley 5 is provided with a roller 51 on the front side. Exemplarily, double-row tapered roller bearings are installed on both sides of the front end of the feeding trolley 5, the outer rings of the bearings are fitted with nylon rollers, and the roller 51 is in contact with the guide rail 3. The bottom of the trolley 5 is provided with a positioning block 52 matched with the stop rod 4, and the positioning block 52 is exemplarily welded on the frame. The feeding trolley 5 realizes automatic centering by cooperating with the guide rail 3 through the roller 51, and realizes secondary accurate positioning by cooperating with the stop rod 4 through the positioning block 52. At the same time, the roller 51 of the feeding trolley 5 matches the curvature of the arc-shaped section 312 guide rail, and cooperates with the guiding function of the straight section 311, so as to realize smooth transition from free pushing to accurate positioning, which is more labor-saving and significantly improves the labor intensity of workers.

[0050] In summary, the vacuum heat treatment furnace of the present application can effectively guide the automatic centering of the feeding trolley 5 by setting the guide rail body 31 with the arc-shaped sections 312, wherein the two arc-shaped sections 312 form a tapered bell mouth structure 313, which can effectively guide the automatic centering of the feeding trolley 5, significantly reduce the difficulty of loading the rail, and improve the efficiency of feeding operation. At the same time, the vacuum heat treatment furnace is provided with a buffer device 41 on the structure of the stop rod 4, which can realize accurate positioning of the feeding trolley 5 and effectively absorb impact energy through the synergistic effect of rigid positioning and elastic buffering, thereby prolonging the service life of the guide rail 3.

[0051] The above description is only an optional embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vacuum heat treatment furnace, characterized by, The utility model relates to a vacuum heat treatment furnace, including: furnace body, rack and guide rail; the furnace body is fixed on the rack; the guide rail includes guide rail body and stop lever, the guide rail body is two in number, the guide rail body includes straight line segment and arc segment, the straight line segment is fixedly connected with the rack, the straight line segment between two guide rail bodies is parallel to each other, the arc segment is fixedly connected with the end of the straight line segment away from the rack and smoothly transitions, the interval between the arc segment of two guide rail bodies gradually reduces along the direction towards the furnace door and forms a horn mouth structure, the stop lever is fixed between two straight line segments and is used for positioning the feeding trolley, the stop lever is provided with a buffer device on the side towards the arc segment.

2. The vacuum heat treatment furnace according to claim 1, characterized by The guide rail body further includes a connecting plate and a reinforcing rib, the connecting plate is perpendicular to and fixedly connected with the end of the straight line segment away from the arc segment, the connecting plate is detachably fixedly connected with the rack, and the reinforcing rib is connected to the included angle between the connecting plate and the straight line segment.

3. The vacuum heat treatment furnace according to claim 2, characterized by The rack includes four bases and support rods, the adjacent bases are fixedly connected through the support rods to form a three-dimensional frame, and the connecting plates of the two guide rail bodies are fixed on the adjacent two bases, respectively.

4. The vacuum heat treatment furnace according to claim 3, characterized in that, The stop lever is arranged in parallel with two of the support rods, and the straight line segment is arranged in parallel or collinearly with the other two support rods.

5. The vacuum heat treatment furnace according to claim 1, characterized by The buffer device is made of rubber and has a cylindrical shape, one end of the buffer device is attached to the stop lever and is fixedly connected through a countersunk bolt.

6. The vacuum heat treatment furnace according to claim 5, characterized in that, An inner hole extending in the axial direction is arranged in the buffer device, and a spring is arranged in the inner hole.

7. The vacuum heat treatment furnace according to claim 1, characterized by The straight line segment and the arc segment are integrally formed or welded.

8. The vacuum heat treatment furnace according to claim 1, characterized by The vacuum heat treatment furnace further includes a feeding trolley, and the front side of the feeding trolley is provided with a roller.

9. The vacuum heat treatment furnace according to claim 8, characterized in that, The bottom of the feeding trolley is provided with a positioning block configured to be in contact with the buffer device.

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