Conveying mechanism for tempering furnace workpiece conveying and using method thereof

Abstract

The invention relates to a conveying mechanism for tempering furnace workpiece conveying and a using method of the conveying mechanism, and belongs to the technical field of tempering furnaces, the conveying mechanism comprises a tempering furnace main body, an underground conveying box, a workpiece conveying trolley, a positioning plug pin and a four-cylinder synchronous hydraulic cylinder, the underground conveying box is arranged underground, and the tempering furnace main body is installed at the top of the underground conveying box; a workpiece conveying bottom hole is formed in the bottom of the tempering furnace body, a hydraulic opening and closing type sealing door is fixedly installed on the workpiece conveying trolley, a lifting conveying cavity is formed in the workpiece conveying trolley, a hydraulic lifting platform is installed in the lifting conveying cavity, a sealing bottom plate is fixedly installed on the hydraulic lifting platform, and a trolley containing frame is fixedly installed on the sealing bottom plate. And the material placing trolley is arranged at the top of the trolley placing frame. According to the double-layer tempering furnace workpiece conveying mechanism, the problems that in the workpiece conveying process of a traditional tempering furnace, heat energy loss is serious, much invalid waiting time exists, and operators are prone to being scalded due to the fact that high-temperature airflow is sprayed out of the furnace body can be effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of tempering furnaces, and in particular to a transmission mechanism for transmitting workpieces in a tempering furnace and a use method thereof. Background Art

[0002] Tempering furnaces are used for tempering general metal parts in air, as well as for quenching, annealing, and aging heat treatment of light alloy parts such as aluminum alloy die castings, pistons, and aluminum plates. The purpose of tempering is to eliminate or reduce the internal stress generated by quenching, improve the toughness and plasticity of the material, obtain the required comprehensive mechanical properties, stabilize the structure and size of the workpiece, and adjust the hardness to a specific range.

[0003] The working temperature of the tempering furnace is usually between 200℃ and 700℃ to meet the different tempering temperature requirements of different materials. The workpiece transmission process of the traditional tempering furnace usually requires frequent opening of the furnace door, which causes serious heat energy loss. When the furnace door is opened, the heating chamber radiates heat to the environment. Each door opening will cause heat loss and affect production efficiency. After each furnace opening, it needs to be heated and averaged again, which results in a lot of invalid waiting time. In addition, when the furnace door is opened, a hot air flow of more than 700℃ will be ejected, which can easily cause burns to the operator. Therefore, a transmission mechanism for the workpiece transmission of the tempering furnace is proposed. and its usage method, cancels the traditional furnace door opening and closing transmission design, adopts an underground conveying chamber plus a trolley lifting mechanism, the heating chamber remains closed throughout the whole process, and is only connected to the sealed conveying chamber, thereby effectively reducing the heat loss caused by the transmission of the tempering furnace workpiece. Compared with the traditional furnace door opening and closing workpiece transmission method, the conveying method using a separate cavity design can effectively save the invalid waiting time for reheating and temperature equalization after the furnace is opened, thereby effectively improving the processing efficiency. Most of the transmission mechanisms are placed underground, which is safe and can effectively release ground space and optimize the workshop layout. Summary of the Invention

[0004] The present invention provides a transmission mechanism for transmitting workpieces in a tempering furnace and a method for using the same, which solves the problems of severe heat energy loss, a long period of ineffective waiting time, and scalding of operators caused by high-temperature airflow ejected from the furnace body during the transmission of workpieces in a traditional tempering furnace.

[0005] The present invention solves the above-mentioned technical problems as follows: a transmission mechanism for transmitting workpieces in a tempering furnace, comprising a tempering furnace main body, an underground conveying box, a workpiece transmission trolley, a positioning latch, and a four-cylinder synchronous hydraulic cylinder, wherein the buried conveying box is placed underground, the tempering furnace main body is installed on the top of the buried conveying box, the bottom of the tempering furnace main body is provided with a workpiece transmission bottom hole, the workpiece transmission trolley is fixedly installed with a hydraulic opening and closing sealed door, the workpiece transmission trolley is provided with a lifting and conveying cavity, the lifting and conveying cavity is installed with a hydraulic lifting platform, the hydraulic lifting platform is fixedly installed with a sealing bottom plate, the sealing bottom plate is fixedly installed with a trolley placement frame, the material placement trolley is placed on the top of the trolley placement frame, and the four-cylinder synchronous hydraulic cylinder is installed with a protective pedal;

[0006] The usage includes the following steps:

[0007] S1, workpiece loading, stably stacking the workpiece on the top of the loading trolley, pushing the loading trolley into the top of the trolley placement frame, inserting the positioning pins into the sockets of the loading trolley and the trolley placement frame with tongs for temporary positioning, and starting the hydraulic lifting platform to retract so that the loading trolley on the top of the sealed bottom plate can be retracted into the lifting and conveying chamber;

[0008] S2, the workpiece is transferred to the tempering furnace. The electric drive wheel is started to move the workpiece transfer trolley from one side of the buried conveyor box to the bottom of the workpiece transfer bottom hole. The hydraulic opening and closing sealing door can be retracted into the protective shell of the hydraulic cylinder. The hydraulic lifting platform is started to drive the loading trolley on the top of the sealing bottom plate into the tempering furnace body for tempering heating. The sealing bottom plate can block the workpiece transfer bottom hole. During the loading process, only a small amount of cold air from the limited space in the workpiece transfer trolley will enter;

[0009] S3, the workpiece is ejected from the tempering furnace. After heating is completed, the hydraulic lifting platform is activated to retract, so that the sealed bottom plate and the material placement trolley on its top can be retracted into the workpiece transfer trolley. The heated air of the tempering furnace body will be transmitted to the limited space on the top of the material placement trolley built into the workpiece transfer trolley, but a large amount of cold air will not be introduced due to the opening. After the workpiece is ejected, the hydraulic opening and closing sealing door is activated to seal the workpiece transfer bottom hole at the bottom of the tempering furnace body, thereby preventing heat from being discharged.

[0010] S4, workpiece unloading, start the electric drive wheel to move the workpiece transfer trolley to the material outlet, start the four-cylinder synchronous hydraulic cylinder to raise the protective pedal, and then start the hydraulic lifting platform to raise the sealing bottom plate and the workpiece on top of it. Pull out the positioning pin with the fire tongs, and then use the hook to hook the material trolley out of the trolley placement frame. After hooking it out, the workpiece can be loaded again, and the material trolley loaded with the workpiece can be pushed directly to the trolley placement frame for re-loading.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, in step S1, after the material placement trolley is retracted into the lifting and conveying cavity, the four-cylinder synchronous hydraulic cylinder is started to drive the protective pedal down, thereby blocking the buried conveying box to prevent personnel and equipment from falling into the buried conveying box.

[0013] Furthermore, the tempering furnace body is equipped with a lifting sealed furnace door, through which the tempering furnace body can be entered for cleaning and maintenance.

[0014] Furthermore, the buried conveying box is provided with a hydraulic cylinder protective shell, which can protect the hydraulic cylinder of the hydraulic opening and closing sealing door.

[0015] Furthermore, the workpiece transfer trolley is provided with an electric drive wheel, and the buried conveying box is provided with a limiting track corresponding to the electric drive wheel. The limiting track can limit the electric drive wheel of the workpiece transfer trolley, so that the electric drive wheel can stably drive the workpiece transfer trolley to move in the buried conveying box.

[0016] Furthermore, a high-temperature resistant sealing rubber ring is provided at the edge of the sealing bottom plate, so that the gap between the lifting conveying cavity and the sealing bottom plate can be sealed by the high-temperature resistant sealing rubber ring, thereby trapping the heat dissipation area in a limited area.

[0017] Furthermore, the material placement cart is provided with moving wheels, and the cart placement frame is provided with limiting grooves corresponding to the moving wheels. The cart placement frame and the material placement cart can be positioned by positioning pins.

[0018] Furthermore, the buried conveying box is provided with a material outlet, and the protective pedal covers the material outlet, thereby preventing workers and equipment from entering the buried conveying box.

[0019] The beneficial effects of the present invention are as follows: the present invention provides a transmission mechanism for transmitting workpieces in a tempering furnace and a method for using the same, which has the following advantages:

[0020] 1. The traditional furnace door opening and closing transmission design is cancelled, and an underground transmission chamber plus a trolley lifting mechanism is adopted. The heating chamber remains closed throughout the entire process and is only connected to the sealed transmission chamber, which can effectively reduce the heat loss caused by the transmission of the workpiece in the tempering furnace;

[0021] 2. Compared with the traditional method of transferring workpieces by opening and closing the furnace door, the conveying method with a separate cavity design can effectively save the ineffective waiting time for reheating and temperature equalization after the furnace is opened, thereby effectively improving the processing efficiency;

[0022] 3. Compared with the traditional ground track layout that occupies workshop space, this type of transmission mechanism is mostly placed underground, which is safer and can effectively free up ground space and optimize workshop layout;

[0023] 4. The use of a double-layer tempering furnace workpiece transmission mechanism can effectively solve the problems of serious heat energy loss during the workpiece transmission process of the traditional tempering furnace, a large amount of invalid waiting time, and high-temperature airflow ejected from the furnace body that can easily cause burns to operators.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following preferred embodiments of the present invention are described in detail with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail by the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 A schematic structural diagram of a transmission mechanism for transmitting workpieces in a tempering furnace and a method for using the same in a state of preparation for loading, provided in one embodiment of the present invention;

[0027] Figure 2 A schematic structural diagram of a transmission mechanism for transmitting workpieces in a tempering furnace and a method for using the mechanism in a processing state provided by one embodiment of the present invention;

[0028] Figure 3 A schematic structural diagram of a transmission mechanism for transmitting workpieces in a tempering furnace and a method for using the same in a state of preparation for unloading, provided in one embodiment of the present invention;

[0029] Figure 4 A schematic structural diagram of a transmission mechanism for transmitting workpieces in a tempering furnace and a method for using the same in loading and unloading states, provided in one embodiment of the present invention;

[0030] Figure 5 A front view of a conveying mechanism for conveying workpieces in a tempering furnace and a method of using the same, showing loading and unloading states, provided in one embodiment of the present invention;

[0031] Figure 6 A schematic structural diagram of a workpiece transport trolley in a transport mechanism for transporting workpieces in a tempering furnace and a method for using the same, provided in one embodiment of the present invention;

[0032] Figure 7 The present invention provides a structural schematic diagram of a trolley placement frame in a transmission mechanism for transmitting workpieces in a tempering furnace and a method for using the same, provided in one embodiment of the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0034] 1. Tempering furnace body; 2. Underground conveying box; 3. Workpiece conveying trolley; 4. Lifting sealed furnace door; 5. Workpiece conveying bottom hole; 6. Hydraulically opened and closed sealed door; 7. Hydraulic cylinder protective shell; 8. Electric drive wheel; 9. Limiting track; 10. Lifting conveying chamber; 11. Hydraulic lifting platform; 12. Sealed bottom plate; 13. Cart placement frame; 14. Material placement trolley; 15. Moving wheel; 16. Positioning pin; 17. Four-cylinder synchronous hydraulic cylinder; 18. Protective pedal; 19. Material outlet. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-7 The principles and features of the present invention are described, and the examples given are only for the purpose of explaining the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are in a very simplified form and are not in exact proportions, and are only used for the purpose of conveniently and clearly assisting in illustrating the embodiments of the present invention.

[0036] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] like Figure 1-7As shown, the present invention provides a transmission mechanism for transmitting workpieces in a tempering furnace, including a tempering furnace main body 1, an underground conveying box 2, a workpiece conveying trolley 3, a positioning pin 16, and a four-cylinder synchronous hydraulic cylinder 17. The buried conveying box 2 is placed underground, the tempering furnace main body 1 is installed on the top of the buried conveying box 2, the bottom of the tempering furnace main body 1 is provided with a workpiece transmission bottom hole 5, the workpiece transmission trolley 3 is fixedly installed with a hydraulic opening and closing sealed door 6, the workpiece transmission trolley 3 is provided with a lifting and conveying chamber 10, the lifting and conveying chamber 10 is installed with a hydraulic lifting platform 11, the hydraulic lifting platform 11 is fixedly installed with a sealing bottom plate 12, the sealing bottom plate 12 is fixedly installed with a trolley placement frame 13, the material placement trolley 14 is placed on the top of the trolley placement frame 13, and the four-cylinder synchronous hydraulic cylinder 17 is installed with a protective pedal 18.

[0039] Preferably, the tempering furnace body 1 is equipped with a lifting sealed furnace door 4, through which the tempering furnace body 1 can be entered for cleaning and maintenance.

[0040] Preferably, the buried conveying box 2 is provided with a hydraulic cylinder protective shell 7 , which can protect the hydraulic cylinder of the hydraulic opening and closing sealing door 6 .

[0041] Preferably, the workpiece transfer trolley 3 is provided with an electric drive wheel 8, and the buried conveying box 2 is provided with a limiting track 9 corresponding to the electric drive wheel 8. The limiting track 9 can limit the electric drive wheel 8 of the workpiece transfer trolley 3, so that the electric drive wheel 8 can stably drive the workpiece transfer trolley 3 to move in the buried conveying box 2.

[0042] Preferably, a high-temperature resistant sealing rubber ring is provided at the edge of the sealing bottom plate 12, so that the gap between the lifting conveying cavity 10 and the sealing bottom plate 12 can be sealed by the high-temperature resistant sealing rubber ring, thereby trapping the heat dissipation area in a limited area.

[0043] Preferably, the material placement trolley 14 is provided with moving wheels 15 , and the trolley placement frame 13 is provided with limiting grooves corresponding to the moving wheels 15 . The trolley placement frame 13 and the material placement trolley 14 can be positioned by positioning pins 16 .

[0044] Preferably, the buried conveying box 2 is provided with a material outlet 19 , and the protective pedal 18 covers the material outlet 19 , thereby preventing workers and equipment from entering the buried conveying box 2 .

[0045] The specific working principle and method of use of the present invention are as follows:

[0046] S1, workpiece loading: stably stack the workpieces on top of the material placement trolley 14, push the material placement trolley 14 into the top of the trolley placement frame 13, insert the positioning pin 16 into the sockets of the material placement trolley 14 and the trolley placement frame 13 with tongs for temporary positioning, start the hydraulic lifting platform 11 to retract, so that the material placement trolley 14 on the top of the sealing bottom plate 12 can be stored in the lifting and conveying chamber 10. After the material placement trolley 14 is stored in the lifting and conveying chamber 10, start the four-cylinder synchronous hydraulic cylinder 17 to drive the protective pedal 18 to descend, thereby sealing the buried conveying box 2 and preventing people and equipment from falling into the buried conveying box 2;

[0047] S2, the workpiece is transferred to the tempering furnace, the electric drive wheel 8 is started to move the workpiece transfer trolley 3 from one side of the buried conveying box 2 to the bottom of the workpiece transfer bottom hole 5, the hydraulic opening and closing sealing door 6 can be retracted into the hydraulic cylinder protective shell 7, and the hydraulic lifting platform 11 is started to drive the loading trolley 14 on the top of the sealing bottom plate 12 to be transferred into the tempering furnace body 1 for tempering heating. The sealing bottom plate 12 can block the workpiece transfer bottom hole 5. During the loading process, only a small amount of cold air from the limited space in the workpiece transfer trolley 3 will enter;

[0048] S3, the workpiece is ejected from the tempering furnace. After heating is completed, the hydraulic lifting platform 11 is activated to retract, so that the sealed bottom plate 12 and the material placing trolley 14 on its top can be retracted into the workpiece transfer trolley 3. The heated air of the tempering furnace body 1 will be transmitted to the limited space above the material placing trolley 14 in the workpiece transfer trolley 3, but a large amount of cold air will not be introduced due to the opening. After the workpiece is ejected, the hydraulic opening and closing sealing door 6 is activated to block the workpiece transfer bottom hole 5 at the bottom of the tempering furnace body 1, thereby preventing heat from being discharged.

[0049] S4, workpiece unloading, start the electric drive wheel 8 to move the workpiece transfer trolley 3 to the material outlet 19, start the four-cylinder synchronous hydraulic cylinder 17 to raise the protective pedal 18, and then start the hydraulic lifting platform 11 to raise the sealing bottom plate 12 and the workpiece on top of it, pull out the positioning pin 16 through the fire tongs, and then use the hook to hook the material placement trolley 14 out of the trolley placement frame 13. After hooking it out, the workpiece can be loaded again, and the material placement trolley 14 loaded with the workpiece can be pushed directly to the trolley placement frame 13 for re-loading.

[0050] It should be noted that, in this document, relational terms such as first and second are used solely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Matters not described in detail in this specification are well known to those skilled in the art.

[0051] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A transmission mechanism for transmitting workpieces in a tempering furnace, comprising a tempering furnace body (1), an underground conveying box (2), a workpiece transmission trolley (3), a positioning latch (16), and a four-cylinder synchronous hydraulic cylinder (17), characterized in that: The buried conveying box (2) is placed underground, the tempering furnace body (1) is installed on the top of the buried conveying box (2), the bottom of the tempering furnace body (1) is provided with a workpiece conveying bottom hole (5), the workpiece conveying trolley (3) is fixedly installed with a hydraulic opening and closing sealing door (6), the workpiece conveying trolley (3) is provided with a lifting conveying chamber (10), the lifting conveying chamber (10) is installed with a hydraulic lifting platform (11), the hydraulic lifting platform (11) is fixedly installed with a sealing bottom plate (12), the sealing bottom plate (12) is fixedly installed with a trolley placement frame (13), the material placement trolley (14) is placed on the top of the trolley placement frame (13), and the four-cylinder synchronous hydraulic cylinder (17) is installed with a protective pedal (18); The usage includes the following steps: S1, loading the workpiece, stably stacking the workpiece on the top of the material placing trolley (14), pushing the material placing trolley (14) into the top of the trolley placement frame (13), inserting the positioning pin (16) into the socket of the material placing trolley (14) and the trolley placement frame (13) through the fire tongs for temporary positioning, starting the hydraulic lifting platform (11) to retract, so that the material placing trolley (14) on the top of the sealing bottom plate (12) can be retracted into the lifting and conveying chamber (10); S2, the workpiece is transferred into the tempering furnace, the electric drive wheel (8) is started to move the workpiece transfer trolley (3) from one side of the buried conveying box (2) to the bottom of the workpiece transfer bottom hole (5), the hydraulic opening and closing sealing door (6) can be retracted into the hydraulic cylinder protective shell (7), and the hydraulic lifting platform (11) is started to drive the material placement trolley (14) on the top of the sealing bottom plate (12) to be transferred into the tempering furnace body (1) for tempering heating. The sealing bottom plate (12) can block the workpiece transfer bottom hole (5), and only a small amount of cold air from the limited space in the workpiece transfer trolley (3) will enter during the loading process; S3, the workpiece is taken out of the tempering furnace, and after heating is completed, the hydraulic lifting platform (11) is started to shrink, so that the sealing bottom plate (12) and the material placing trolley (14) on the top can be put into the workpiece transfer trolley (3), and the heated air of the tempering furnace body (1) will be transmitted to the limited space on the top of the material placing trolley (14) built in the workpiece transfer trolley (3), but a large amount of cold air will not be introduced due to the opening. After the workpiece is taken out, the hydraulic opening and closing sealing door (6) is started to block the workpiece transfer bottom hole (5) at the bottom of the tempering furnace body (1), thereby preventing heat from being discharged; S4, workpiece unloading, start the electric drive wheel (8) to move the workpiece transfer trolley (3) to the material outlet (19), start the four-cylinder synchronous hydraulic cylinder (17) to raise the protective pedal (18), and then start the hydraulic lifting platform (11) to raise the sealing bottom plate (12) and the workpiece on the top thereof, and pull out the positioning pin (16) through the fire tongs, and then the material placement trolley (14) can be hooked out from the trolley placement frame (13) by the hook. After being hooked out, the workpiece can be loaded again, and the material placement trolley (14) loaded with the workpiece is directly pushed to the trolley placement frame (13) for loading again.

2. A transmission mechanism for transmitting workpieces in a tempering furnace according to claim 1, characterized in that: In step S1, after the material placement trolley (14) is stored in the lifting and conveying chamber (10), the four-cylinder synchronous hydraulic cylinder (17) is started to drive the protective pedal (18) to descend, thereby blocking the buried conveying box (2) and preventing personnel and equipment from falling into the buried conveying box (2).

3. The transmission mechanism for transmitting workpieces in a tempering furnace according to claim 1, characterized in that: The tempering furnace body (1) is equipped with a lifting sealed furnace door (4).

4. The transmission mechanism for transmitting workpieces in a tempering furnace according to claim 1, characterized in that: The buried conveying box (2) is provided with a hydraulic cylinder protective shell (7).

5. The transmission mechanism for transmitting workpieces in a tempering furnace according to claim 1, characterized in that: The workpiece transport trolley (3) is provided with an electric drive wheel (8), and the buried conveying box (2) is provided with a limited track (9) corresponding to the electric drive wheel (8).

6. The transmission mechanism for transmitting workpieces in a tempering furnace according to claim 1, characterized in that: A high-temperature resistant sealing rubber ring is provided at the edge of the sealing bottom plate (12), so that the gap between the lifting and conveying cavity (10) and the sealing bottom plate (12) can be sealed by the high-temperature resistant sealing rubber ring.

7. The transmission mechanism for transmitting workpieces in a tempering furnace according to claim 1, characterized in that: The material placement trolley (14) is provided with a moving wheel (15), and the trolley placement frame (13) is provided with a limiting groove corresponding to the moving wheel (15). The trolley placement frame (13) and the material placement trolley (14) can be positioned by a positioning pin (16).

8. The transmission mechanism for transmitting workpieces in a tempering furnace according to claim 1, characterized in that: The buried conveying box (2) is provided with a material outlet (19), and the protective pedal (18) covers the material outlet (19).

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