Circulating drawer conveying mechanism for oven

Abstract

The utility model discloses a circulation type drawer conveying mechanism for an oven, which comprises a circulation type drawer conveying mechanism body arranged on one side of the oven, a plurality of processed oven drawers are movably inserted in the right side of the oven, and the circulation type drawer conveying mechanism body comprises a bottom plate arranged on the right side of the oven; the two sets of electric sliding rails are symmetrically fixed to the top of the bottom plate; and the concentric-square-shaped frame is fixedly connected between the moving ends of the two electric sliding rails. By arranging a series of structures, the processed oven drawer can be conveniently and automatically moved out, and the oven drawer to be processed can be conveyed into the oven to be safely and automatically replaced, so that the risk of scalding when the processed oven drawer is manually pulled and replaced due to high temperature is reduced, and the use safety is improved; and the height of the machined oven drawer which is moved out and replaced according to needs can be automatically and accurately adjusted in a lifting mode, the machined oven drawer at the high position can be replaced conveniently, and use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of oven drawer replacement technology, specifically a circulating drawer conveying mechanism for ovens. Background Technology

[0002] An oven is a sealed appliance used to bake food or dry products. Industrial ovens are a type of equipment used in industry to dry products. They can be electric or gas-fired and are also called baking ovens or drying boxes. In the process of baking pasta in an industrial oven, the operator needs to pull out the drawer after the baking time has reached a certain point, take out the pasta from the drawer, put the unbaked pasta back in, and put it back into the oven to continue baking.

[0003] In the production process of large-scale baking factories, the baked drawers are often pulled out directly and then a new baking drawer is quickly inserted back into the oven to increase the oven's production efficiency. However, this method has the following problems: 1. When the oven finishes baking, the temperature of the baked drawers is high, and manual pulling out and replacing them can easily cause burns, which is not ideal. 2. Drawers often have multiple layers, making it difficult to replace drawers in higher positions. In view of this, this application proposes a circulating drawer conveying mechanism for ovens to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a circulating drawer conveying mechanism for an oven to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a circulating drawer conveying mechanism for an oven, comprising a circulating drawer conveying mechanism body disposed on one side of the oven, wherein multiple processed oven drawers are movably inserted into the right side of the oven, and the circulating drawer conveying mechanism body comprises:

[0006] The bottom plate is located on the right side of the oven;

[0007] The electric slide rails consist of two sets, symmetrically fixed to the top of the base plate;

[0008] The U-shaped frame is fixedly connected between the two moving ends of the electric slide rails;

[0009] The PLC controller is fixedly connected to the right side of the rotating frame; two electric slide rails are provided for controlling the distance and lifting of the rotating frame by the PLC controller.

[0010] A turntable is positioned above the rotary frame;

[0011] The oven drawer to be processed is movably placed on the top right side of the turntable, and iron plates are fixedly connected to the left side of the oven drawer to be processed and the right side of multiple processed oven drawers.

[0012] The rotary drive assembly is mounted on the rotary frame and fixedly connected to the turntable, and electrically connected to the PLC controller; the rotary drive assembly is used to drive the turntable to rotate half a revolution each time under the control of the PLC controller;

[0013] The distance measuring component is fixedly installed between the left side of the rotating frame and the top of the base plate, and is electrically connected to the PLC controller; the distance measuring component is used to detect the lifting distance of the rotating frame and transmit the distance value to the PLC controller;

[0014] The push-pull assembly is fixedly installed on the inner wall of the bottom of the U-shaped frame and electrically connected to the PLC controller;

[0015] The connector is fixedly connected to the left end of the push-pull assembly;

[0016] An electromagnet is installed at the bottom of the connector and electrically connected to the PLC controller. The push-pull assembly is used to control the electromagnet to move right and left via the connector, driven by the PLC controller. The rightward movement uses the corresponding iron plate to attract and pull the processed oven drawer to the top left of the turntable, and the leftward movement pushes the oven drawer to be processed into the oven when the turntable rotates half a turn and drives it to the left.

[0017] Preferably, the electromagnet is welded and fixed to the bottom of the connecting seat.

[0018] Preferably, the electromagnet is detachably connected to the bottom of the connector.

[0019] Preferably, the top of the electromagnet is fixedly connected with a threaded post and a flexible rubber pad, the flexible rubber pad is movably sleeved on the threaded post, and the bottom of the connecting seat is provided with a threaded groove that is threadedly connected to the threaded post.

[0020] Preferably, the rotary drive assembly includes a rotating tube rotatably mounted on the top of the rotary frame, a turntable fixedly sleeved on the rotating tube, an external gear ring fixedly sleeved on the rotating tube located inside the rotary frame, a gear with the same outer diameter meshing on the right side of the external gear ring, a servo brake motor with an output shaft fixedly connected to the bottom of the rotary frame and the servo brake motor being electrically connected to the PLC controller.

[0021] Preferably, the ranging component includes a reference plate fixedly connected to the top of the base plate, and a laser ranging sensor fixedly connected to the left side of the U-shaped frame is disposed above the reference plate. The laser ranging sensor is electrically connected to the PLC controller.

[0022] Preferably, the push-pull assembly includes a T-shaped support rod fixedly connected to the inner wall of the bottom of the rotary frame. The T-shaped support rod is located inside the rotating tube and does not contact the inner wall of the rotating tube. An electric telescopic rod is fixedly installed on the top of the T-shaped support rod. The extended end of the electric telescopic rod is fixedly connected to the right side of the connecting seat. The electric telescopic rod is electrically connected to the PLC controller.

[0023] Preferably, the top of the turntable is fixedly connected to two symmetrically arranged U-shaped limiting blocks, and the oven drawer to be processed is moved and placed in the U-shaped limiting block on the right.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] 1. Through the combination of iron sheet, base plate, U-shaped frame, turntable, electric slide rail, PLC controller, rotary drive assembly, push-pull assembly and electromagnet, it can automatically move the processed oven drawer out and transport the oven drawer to be processed into the oven for safe and automatic replacement, reducing the risk of burns when manually pulling the processed oven drawer to replace it due to its high temperature, and improving the safety of use.

[0026] 2. With the cooperation of the set-up U-shaped frame, PLC controller and ranging component, the height of the processed oven drawer that needs to be moved out for replacement can be automatically and accurately adjusted. The adjustable height makes it convenient to replace the processed oven drawer in a higher position, improving the ease of use.

[0027] 3. The use of threaded posts and threaded grooves for threaded installation of the electromagnet facilitates its individual rotation, removal, and installation. This allows for easy replacement of the electromagnet when it is severely worn or damaged, further improving its performance.

[0028] This utility model, through a series of structures, facilitates the automatic removal of processed oven drawers and the safe automatic replacement of oven drawers to be processed into the oven. This reduces the risk of burns when manually pulling out processed oven drawers during replacement due to their high temperature, improving safety. Furthermore, it allows for the automatic and precise height adjustment of processed oven drawers to be removed for replacement as needed, making it convenient to replace oven drawers in higher positions and improving ease of use. Attached Figure Description

[0029] Figure 1 This is a cross-sectional view of a circulating drawer conveying mechanism for an oven according to Embodiment 1 of this utility model;

[0030] Figure 2 This is a three-dimensional structural diagram of the circulating drawer conveying mechanism body of an oven according to Embodiment 1 of this utility model;

[0031] Figure 3 for Figure 1 A magnified structural diagram of part A in the diagram;

[0032] Figure 4 This is a front sectional view of the main body of a circulating drawer conveying mechanism for an oven, as proposed in Embodiment 2 of this utility model.

[0033] In the diagram: 100, Oven; 200, Finished Oven Drawer; 300, Oven Drawer to be Finished; 1, Iron Sheet; 101, Electromagnet; 102, Threaded Column; 2, Base Plate; 201, Electric Slide Rail; 202, Reverse Frame; 3, PLC Controller; 4, Laser Rangefinder Sensor; 401, Reference Plate; 5, Rotary Tube; 501, External Gear Ring; 502, Gear; 503, Servo Brake Motor; 6, Turntable; 601, U-Shaped Limit Block; 7, T-Shaped Support Rod; 701, Electric Telescopic Rod; 702, Connecting Seat. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Example 1

[0036] like Figures 1 to 3 As shown, this embodiment proposes a circulating drawer conveying mechanism for an oven, including a circulating drawer conveying mechanism body disposed on one side of the oven 100. Multiple pre-processed oven drawers 200 are movably inserted into the right side of the oven 100. The circulating drawer conveying mechanism body includes:

[0037] Base plate 2 is located on the right side of oven 100;

[0038] Electric slide rails 201, which consist of two sets and are symmetrically fixed to the top of the base plate 2;

[0039] The rotary frame 202 is fixedly connected between the moving ends of the two electric slide rails 201;

[0040] PLC controller 3 is fixedly connected to the right side of the rotary frame 202; two electric slide rails 201 are provided for controlling the distance and lifting of the rotary frame 202 under the control of PLC controller 3.

[0041] Turntable 6 is positioned above the rotary frame 202;

[0042] The oven drawer 300 to be processed is movably placed on the top right side of the turntable 6. Iron plates 1 are fixedly connected to the left side of the oven drawer 300 to be processed and the right side of multiple processed oven drawers 200. Two symmetrically arranged U-shaped limiting blocks 601 are fixedly connected to the top of the turntable 6. The oven drawer 300 to be processed is movably locked in the U-shaped limiting block 601 on the right side.

[0043] The rotary drive assembly is mounted on the rotary frame 202 and fixedly connected to the turntable 6, and electrically connected to the PLC controller 3; the rotary drive assembly is used to drive the turntable 6 to rotate half a turn each time under the control of the PLC controller 3.

[0044] The ranging component is fixedly installed between the left side of the rotating frame 202 and the top of the base plate 2, and is electrically connected to the PLC controller 3; the ranging component is used to detect the lifting distance of the rotating frame 202 and transmit the distance value to the PLC controller 3;

[0045] The push-pull assembly is fixedly installed on the inner wall of the bottom of the U-shaped frame 202 and electrically connected to the PLC controller 3;

[0046] Connector 702 is fixedly connected to the left end of the push-pull assembly;

[0047] Electromagnet 101 is installed at the bottom of connector 702 and electrically connected to PLC controller 3. The push-pull assembly is used to drive electromagnet 101 to move right and left under the control of PLC controller 3 through connector 702. The right movement is used to pull the processed oven drawer 200 out to the top left side of turntable 6 by adsorption through the corresponding iron plate 1. The left movement is used to push the oven drawer 300 to be processed into the oven 100 when turntable 6 rotates half a turn and drives it to rotate to the left side.

[0048] Specifically, the electromagnet 101 is welded and fixed to the bottom of the connector 702.

[0049] Furthermore, the rotary drive assembly includes a rotating tube 5 rotatably mounted on the top of the rotary frame 202. The top of the rotary frame 202 has a circular through-hole, within which two bearings are fixedly fitted. The inner rings of the bearings are fixedly fitted to the outer sides of the rotating tube 5, achieving the effect of rotating the rotating tube 5. A turntable 6 is fixedly fitted onto the rotating tube 5, with a fitting hole on its top for fixed connection to the outer side of the rotating tube 5. An external gear ring 501 located within the rotary frame 202 is fixedly fitted onto the rotating tube 5. A gear 502 with the same outer diameter meshes with the right side of the external gear ring 501. A servo brake motor with an output shaft fixedly connected to the bottom of the gear 502 is fixedly mounted on the bottom of the rotary frame 202. 503, the servo brake motor 503 is electrically connected to the PLC controller 3; the set rotating tube 5, external gear ring 501, gear 502 and servo brake motor 503 cooperate, the PLC controller 3 controls the servo brake motor 503 to start half a turn each time. The servo brake motor 503 drives the rotating tube 5 to rotate half a turn in sequence through gear 502 and external gear ring 501. The rotating tube 5 drives the turntable 6 to rotate half a turn, realizing the effect of driving the turntable 6 to rotate half a turn each time. The half-turn rotation of the turntable 6 realizes that the processed oven drawer 200 pulled to the top of the right is rotated to the right side, and drives the oven drawer 300 to be processed to the left side, realizing the automatic exchange of the positions of the two.

[0050] Furthermore, the ranging component includes a reference plate 401 fixedly connected to the top of the base plate 2. Above the reference plate 401, a laser ranging sensor 4 is fixedly connected to the left side of the rotary frame 202. The laser ranging sensor 4 is electrically connected to the PLC controller 3. The laser ranging sensor 4 and the reference plate 401 work together to pre-set multiple distance values ​​for closing the two electric slide rails 201 based on the height of each processed oven drawer 200 using the PLC controller 3. When the PLC controller 3 controls the two electric slide rails 201 to start, the two... The moving end of the electric slide rail 201 drives the rotating frame 202 to move vertically. The rotating frame 202 drives the turntable 6 to move upward or downward through the rotating tube 5. At the same time, the rotating frame 202 drives the laser range sensor 4 to move upward or downward. The laser range sensor 4 detects the distance between itself and the reference plate 401 and transmits the distance value to the PLC controller 3. After the corresponding layer distance value of the rotating drive is reached, the PLC controller 3 controls the two electric slide rails 201 to automatically close, so as to achieve the effect of automatic and precise height adjustment of the processed oven drawer 200 that needs to be moved out and replaced as needed.

[0051] Furthermore, the push-pull assembly includes a T-shaped support rod 7 fixedly connected to the inner wall of the bottom of the rotary frame 202. The T-shaped support rod 7 is located inside the rotating tube 5 and does not contact the inner wall of the rotating tube 5. An electric telescopic rod 701 is fixedly installed on the top of the T-shaped support rod 7. The extended end of the electric telescopic rod 701 is fixedly connected to the right side of the connecting seat 702. The electric telescopic rod 701 is electrically connected to the PLC controller 3. The T-shaped support rod 7 and the electric telescopic rod 701 cooperate to drive the electric telescopic rod 701 to reverse and control the electromagnet 101 to open when the PLC controller 3 is preset to open. The PLC controller 3 is also preset to control the electromagnet 101 to close for a time according to the time required for the electric telescopic rod 701 to reverse and retract. For example, if the electric telescopic rod 701 needs five seconds to reverse and retract, the electromagnet 101 is set to open for five seconds. The system closes after a few seconds and is pre-set to control the electric telescopic rod 701 to start forward after rotating half a circle. When the PLC controller 3 is turned on by personnel, it first controls the electric telescopic rod 701 to start in reverse and the electromagnet 101 to open, causing it to drive the connecting seat 702 to move to the right. The connecting seat 702 drives the electromagnet 101 to move to the right. The electromagnet 101 pulls the processed oven drawer 200 out to the top left side of the turntable 6 through the magnetic attraction of its corresponding iron plate 1. After retracting, it controls the electromagnet 101 to close. After rotating half a circle, it controls the electric telescopic rod 701 to start forward again, causing it to drive the electromagnet 101 through the connecting seat 702 to push the oven drawer 300 to be processed into the oven, achieving the effect of safe and cyclical replacement and reducing the risk of burns when manually pulling and replacing the processed oven drawer 200 due to its high temperature.

[0052] This embodiment can automatically remove the processed oven drawer 200 and transport the oven drawer 300 to be processed into the oven 100 for safe and automatic replacement. This reduces the risk of burns when manually pulling the processed oven drawer 200 to replace it due to its high temperature, thus improving safety. Furthermore, the height of the processed oven drawer 200 to be removed for replacement can be automatically and precisely adjusted as needed. The adjustable height also facilitates the replacement of processed oven drawers 200 in higher positions, improving ease of use.

[0053] The usage method of this embodiment is as follows: When using the oven with the circulating drawer conveyor mechanism, the PLC controller 3 is pre-set according to the height of each processed oven drawer 200 to control the two electric slide rails 201 to close at multiple corresponding distance values. This lifting step is controlled by the operator using the PLC controller 3 alone. In addition, the PLC controller 3 is pre-set to drive the electric telescopic rod 701 to start in reverse and control the electromagnet 101 to open when starting to replace. The closing time of the electromagnet 101 is also pre-set according to the time required for the electric telescopic rod 701 to start in reverse and retract. For example, if the electric telescopic rod 701 needs five seconds to start in reverse and retract, it is set to close the electromagnet 101 after five seconds of opening. The electric telescopic rod 701 is also pre-set to start in the forward direction after rotating half a circle. The servo brake motor 503 is also pre-set to start half a circle directly after the electromagnet 101 is closed.

[0054] When replacing the processed oven drawer 200, the PLC controller 3 is activated by the operator. At this time, the PLC controller 3 drives the electric telescopic rod 701 to reverse and controls the electromagnet 101 to open. The electric telescopic rod 701 drives the connecting seat 702 to move to the right. The connecting seat 702 then drives the electromagnet 101 to move to the right. The electromagnet 101, through its corresponding iron plate 1, magnetically pulls the processed oven drawer 200 out to the top left side of the turntable 6. After retracting, the electromagnet 101 is controlled to close. Immediately following, the servo brake motor 503 is activated half a turn. The servo brake motor 503 then drives the rotating tube 5 to rotate half a turn through the gear 502 and the external gear ring 501. The rotating tube 5 drives the turntable 6 to rotate half a turn. The current drive turntable 6 rotates half a circle each time. By rotating the turntable 6 half a circle, the processed oven drawer 200, which has been pulled to the top of the turntable, is rotated to the right side, and the oven drawer 300 to be processed is rotated to the left side, so as to automatically exchange the positions of the two. After rotating half a circle, the PLC controller 3 controls the electric telescopic rod 701 to start in the forward direction, so that it drives the electromagnet 101 through the connecting seat 702 to push the oven drawer 300 to be processed into the oven. This achieves the effect of automatically removing the processed oven drawer 200 and transporting the oven drawer 300 to be processed into the oven 100 for safe and automatic replacement. This reduces the risk of burns when manually pulling the processed oven drawer 200 to replace it due to its high temperature, and improves the safety of use.

[0055] Additionally, when adjusting the height of the pre-processed oven drawer 200 to be replaced as needed, the PLC controller 3 operates the rotary drive corresponding to the distance value to control the two electric slide rails 201 to start. The moving ends of the two electric slide rails 201 drive the rotating frame 202 to move vertically. The rotating frame 202 drives the turntable 6 to move upward or downward through the rotating tube 5. At the same time, the rotating frame 202 drives the laser rangefinder 4 to move upward or downward. The laser rangefinder 4 detects the distance between itself and the reference plate 401 and transmits the distance value to the PLC controller 3. After reaching the corresponding layer distance value of the rotary drive, the PLC controller 3 controls the two electric slide rails 201 to automatically close, achieving the effect of automatic and precise height adjustment of the pre-processed oven drawer 200 to be removed and replaced as needed. Moreover, the adjustable height method facilitates the replacement of pre-processed oven drawers 200 in higher positions, improving ease of use.

[0056] Example 2

[0057] like Figure 4 As shown, this embodiment differs from Embodiment 1 in that: the electromagnet 101 is detachably connected to the bottom of the connecting seat 702, and a threaded post 102 and a flexible rubber pad are fixedly connected to the top of the electromagnet 101. The flexible rubber pad is movably sleeved on the threaded post 102. The bottom of the connecting seat 702 is provided with a threaded groove that is threadedly connected to the threaded post 102. The threaded connection between the threaded post 102 and the threaded groove facilitates the subsequent individual rotation, disassembly, and installation of the electromagnet 101, thereby facilitating its replacement when it is severely worn or damaged.

[0058] This embodiment facilitates the replacement of electromagnet 101 separately when it is severely worn or damaged.

[0059] The method of use in this embodiment is as follows: The difference from Embodiment 1 is that, based on Embodiment 1, it also has the following functions: In addition, the electromagnet 101 is screwed to the connecting seat 702 by using the threaded post 102 and the threaded groove, which makes it convenient to rotate and remove the electromagnet 101 separately and install it in the future. This makes it convenient to replace the electromagnet 101 separately when it is severely worn or damaged, and further improves the use effect.

[0060] The PLC controller 3, electric slide rail 201, electric telescopic rod 701, electromagnet 101, servo brake motor 503, and laser rangefinder 4 in this utility model are well known to those skilled in the art and belong to conventional means or common knowledge. Those skilled in the art can arbitrarily select and match them according to their needs or convenience. In addition, the PLC controller 3 receives the distance value transmitted by the laser rangefinder 4 and controls the electric slide rail 201 to close when the preset value is reached. It also controls the electromagnet 101 to open, the electric telescopic rod 701 to start in reverse, the servo brake motor 503 to start half a turn, and the electric telescopic rod 701 to start forward and reset according to the programming program. These are basic programmed numerical control methods well known to those skilled in the art. They all belong to conventional means or common knowledge of programmers for programming controllers and will not be described in detail here.

[0061] In addition, the starting control of the servo brake motor 503 is a reciprocating application, that is, the first start is a forward start, the second is a reverse start, the third is a forward start, and so on. This method is to avoid the phenomenon that the cable will get tangled due to the inability to rotate and reset when the power supply is connected to the external power supply via a flexible cable.

[0062] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A circulating drawer conveying mechanism for an oven, comprising a circulating drawer conveying mechanism body disposed on one side of an oven (100), wherein a plurality of pre-processed oven drawers (200) are movably inserted into the right side of the oven (100), characterized in that: The main body of the circulating drawer conveying mechanism includes: The bottom plate (2) is located on the right side of the oven (100); Electric slide rails (201) are in two sets and are symmetrically fixed on the top of the base plate (2); The circular frame (202) is fixedly connected between the moving ends of the two electric slide rails (201); The PLC controller (3) is fixedly connected to the right side of the U-shaped frame (202); A turntable (6) is positioned above the rotary frame (202); The oven drawer to be processed (300) is movably placed on the top right side of the turntable (6). Iron plates (1) are fixedly connected to the left side of the oven drawer to be processed (300) and the right side of multiple processed oven drawers (200). The rotary drive assembly is mounted on the rotary frame (202) and fixedly connected to the turntable (6), and electrically connected to the PLC controller (3); The ranging component is fixedly installed between the left side of the circular frame (202) and the top of the base plate (2), and is electrically connected to the PLC controller (3); The push-pull assembly is fixedly installed on the inner wall of the bottom of the U-shaped frame (202) and electrically connected to the PLC controller (3); Connector (702) is fixedly connected to the left end of the push-pull assembly; An electromagnet (101) is installed at the bottom of a connector (702) and is electrically connected to a PLC controller (3).

2. The circulating drawer conveying mechanism for an oven according to claim 1, characterized in that: The electromagnet (101) is welded and fixed to the bottom of the connecting seat (702).

3. The circulating drawer conveying mechanism for an oven according to claim 1, characterized in that: The electromagnet (101) is detachably connected to the bottom of the connector (702).

4. The circulating drawer conveying mechanism for an oven according to claim 3, characterized in that: The top of the electromagnet (101) is fixedly connected to a threaded post (102) and a flexible rubber pad. The flexible rubber pad is movably sleeved on the threaded post (102). The bottom of the connecting seat (702) is provided with a threaded groove that is threadedly connected to the threaded post (102).

5. The circulating drawer conveying mechanism for an oven according to claim 1, characterized in that: The rotary drive assembly includes a rotating tube (5) that is rotatably mounted on the top of the rotary frame (202). The turntable (6) is fixedly sleeved on the rotating tube (5). An external gear ring (501) located inside the rotary frame (202) is fixedly sleeved on the rotating tube (5). A gear (502) with the same outer diameter is meshed on the right side of the external gear ring (501). A servo brake motor (503) with an output shaft fixedly connected to the bottom of the gear (502) is fixedly installed at the bottom of the rotary frame (202). The servo brake motor (503) is electrically connected to the PLC controller (3).

6. The circulating drawer conveying mechanism for an oven according to claim 1, characterized in that: The ranging assembly includes a reference plate (401) fixedly connected to the top of the base plate (2), and a laser ranging sensor (4) fixedly connected to the left side of the frame (202) is provided above the reference plate (401). The laser ranging sensor (4) is electrically connected to the PLC controller (3).

7. A circulating drawer conveying mechanism for an oven according to claim 5, characterized in that: The push-pull assembly includes a T-shaped support rod (7) fixedly connected to the inner wall of the bottom of the rotary frame (202). The T-shaped support rod (7) is located inside the rotating tube (5) and does not contact the inner wall of the rotating tube (5). An electric telescopic rod (701) is fixedly installed on the top of the T-shaped support rod (7). The extended end of the electric telescopic rod (701) is fixedly connected to the right side of the connecting seat (702). The electric telescopic rod (701) is electrically connected to the PLC controller (3).

8. The circulating drawer conveying mechanism for an oven according to claim 1, characterized in that: The top of the turntable (6) is fixedly connected to two symmetrically arranged U-shaped limiting blocks (601), and the oven drawer (300) to be processed is placed in the U-shaped limiting block (601) on the right.

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