Multi-angle adjustable hand-held pie oiling device structure

The design of the multi-angle adjustable oil spraying device for hand-pulled pancakes solves the problem of uneven oil spraying, realizes dynamic adjustment and precise positioning of the nozzle, and improves the production efficiency and taste of hand-pulled pancakes.

CN224368911UActive Publication Date: 2026-06-19SHANGHAI LIANGQUAN QIMEI FOOD TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI LIANGQUAN QIMEI FOOD TECH CO LTD
Filing Date
2025-06-18
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing hand-pulled pancake oil spraying devices are difficult to adjust the oil spraying range according to the size or position of the pancake, resulting in uneven oil spraying and affecting the taste.

Method used

A multi-angle adjustable oil spraying device for hand-pulled pancakes was designed. The nozzle is dynamically adjusted through an adjustment device and a detection component, including a swing component, a rotation component and a synchronization control component, to ensure that the nozzle can accurately spray oil according to the position and size of the pancake.

Benefits of technology

It enables rapid movement and precise positioning of the nozzle, ensuring that the oil is evenly applied to the surface of the hand-pulled pancake, improving spraying efficiency and uniformity, and reducing manual intervention.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of hand pie production and processing, in particular to a multi-angle adjustable hand pie oiling device structure, which comprises a workbench, an oil tank arranged on the workbench, an oil pump arranged on the oil tank and communicated with the oil tank, and a nozzle for oiling the hand pie, the oil tank is sequentially communicated with the oil pump and the nozzle; an adjusting device for adjusting the direction of the nozzle is further arranged on the workbench, the adjusting device comprises a supporting frame arranged on the workbench and an adjusting rod hingedly arranged on the supporting frame, the adjusting rod can swing above the workbench and is arranged to extend towards the workbench, the nozzle is arranged at the end of the adjusting rod away from the supporting frame, and a swinging assembly for driving the adjusting rod to swing is arranged on the supporting frame. The application has the effect that the hand pie can be evenly coated with oil.
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Description

Technical Field

[0001] This application relates to the technical field of hand-pulled pancake production and processing, and in particular to a multi-angle adjustable hand-pulled pancake oil spraying device structure. Background Technology

[0002] Hand-pulled pancakes evolved from scallion pancakes and originated in Taiwan, China. Freshly baked hand-pulled pancakes have thousands of layers, each as thin as paper. When you grab them, the dough strands are connected. The outer layer is golden and crispy, while the inner layer is soft and tender. When the hand-pulled pancakes are processed inside the forming machine, the dough needs to be brushed with oil to separate the dough strands and prevent them from sticking together.

[0003] The oiling process for making scallion pancakes is a crucial step. Currently, some scallion pancake production lines still use manual oiling, which is inefficient and labor-intensive. A few more advanced production lines use an automatic oil spraying and brushing method, but most existing oil spraying devices are only suitable for liquid vegetable oil and not for solidified animal fats such as lard, tallow, and mutton fat. The existing oil spraying structure for scallion pancakes mainly consists of an oil tank, an oil pump, and nozzles. The oil pump draws oil from the tank into the nozzles, which then spray it onto the pancake, thus achieving the oiling function.

[0004] In actual use, because the nozzle is oriented in a fixed direction, it is difficult to adjust the oil spray range according to the size or position of the pancake, resulting in uneven oil spraying and affecting the taste of the pancake. Utility Model Content

[0005] In order to ensure that the surface of the hand-pulled pancake can be evenly coated with oil after production, this application provides a multi-angle adjustable hand-pulled pancake oil spraying device structure.

[0006] This application provides a multi-angle adjustable oil-sprinkling device for hand-pulled pancakes, which adopts the following technical solution:

[0007] A multi-angle adjustable hand-pulled pancake oil spraying device includes a worktable, an oil tank mounted on the worktable, an oil pump mounted on and connected to the oil tank, and a nozzle for spraying oil onto the hand-pulled pancake. The oil tank is connected to the oil pump and the nozzle in sequence. The worktable is also provided with an adjustment device for adjusting the direction of the nozzle. The adjustment device includes a support frame mounted on the worktable and an adjustment rod hinged to the support frame. The adjustment rod can swing above the worktable and extends towards the worktable. The nozzle is installed at the end of the adjustment rod away from the support frame. The support frame is provided with a swinging component for driving the adjustment rod to swing.

[0008] By adopting the above technical solution, during the process of spraying edible oil onto the scallion pancakes after production, the swing component can control the adjustment rod to rotate on the support frame, thereby allowing the nozzle on the adjustment rod to move. When facing scallion pancakes in different positions, the adjustment rod can be rotated to move the nozzle above the scallion pancakes, and finally the oil can be sprayed evenly onto the scallion pancakes.

[0009] Preferably, the swing assembly includes a swing shaft that passes through and is fixed to the end of the adjusting rod and a swing mounting seat that is mounted on the support frame. The end of the adjusting rod is hinged to the swing mounting seat, and both ends of the swing shaft are rotatably mounted on the swing mounting seat. The swing mounting seat is also provided with a swing motor that electrically controls the swing of the adjusting rod.

[0010] By adopting the above technical solution, during the rotation of the control rod, the swing shaft fixed on the control rod can rotate stably on the swing mounting base and can achieve a wide range of rotation within the horizontal range, thereby allowing the nozzle to adapt to the hand-grabbed pancake in different positions; in addition, through the control method of the swing motor, the control rod can respond more quickly, allowing the nozzle to move to the correct position more quickly.

[0011] Preferably, a gear swing component is further provided between the end of the adjusting rod and the swing mounting base. The gear swing component includes a swing worm wheel fixed on the swing shaft and a swing worm rotatably mounted on the swing mounting base. The swing worm wheel meshes with the swing worm, and the swing motor controls the rotation of the swing worm.

[0012] By adopting the above technical solution, the gear engagement method provides more precise transmission during the control of the adjustment rod's rotation, enabling faster control of the adjustment rod's swing. In addition, the swing worm and swing worm wheel can only transmit power from the swing worm to the swing worm wheel during the transmission process, and cannot transmit power in the reverse direction. Therefore, when the adjustment rod rotates to an inclined state, the swing worm wheel and swing worm achieve self-locking, preventing the adjustment rod from swinging under the action of gravity.

[0013] Preferably, the adjusting device further includes a rotating assembly for controlling the rotation of the adjusting rod, the swing mounting seat is rotatably mounted on the support frame, and the rotating assembly includes a rotating motor for controlling the rotation of the swing mounting seat.

[0014] By adopting the above technical solution, the rotating component allows the adjusting rod to swing while also rotating freely, thereby allowing the nozzle to adapt to more positions of the hand-grabbed pancake and changing the movement of the nozzle from a single horizontal plane to a three-dimensional movement.

[0015] Preferably, the rotating assembly further includes a gear rotating component disposed between the swing mounting base and the support frame. The gear rotating component includes a rotating worm wheel fixed on the swing mounting base and a rotating worm rotatably disposed on the support frame. The rotating worm wheel is coaxially disposed with the swing mounting base, and the rotating worm wheel meshes with the rotating worm. The rotating motor controls the rotation of the rotating worm.

[0016] By adopting the above technical solution, the transmission method of rotating the worm gear and rotating the worm is more precise and has the function of preventing reversal.

[0017] Preferably, the adjusting device further includes a synchronization control component for controlling the nozzle to rotate synchronously with the adjusting rod. The nozzle is rotatably mounted at the end of the adjusting rod. The synchronization control component includes a fixed plate fixed on the swing mounting base and a rotating plate rotatably mounted on the adjusting rod and close to the end of the nozzle. The rotating plate rotates synchronously with the nozzle. A connecting member is provided between the fixed plate and the rotating plate. The connecting member controls the rotation of the rotating plate and simultaneously ensures that the nozzle always sprays oil downwards.

[0018] By adopting the above technical solution, the nozzle can always be set downwards during the swing of the control rod. After the nozzle is moved, it sprays forward or at an angle, which cannot guarantee that the sprayed cooking oil is accurately sprayed onto the scallion pancake.

[0019] Preferably, the connector includes a pair of connecting rods disposed between the fixed plate and the rotating plate. The two ends of the connecting rods are respectively hinged to the fixed plate and the rotating plate, and the two connecting rods are parallel to each other, so that the fixed plate, the rotating plate and the pair of connecting rods form a parallelogram structure.

[0020] By adopting the above technical solution, during the swinging process of the adjusting rod, the fixed plate, the rotating plate and a pair of connecting rods can form a parallelogram structure, and the nozzle is rotated and set at the end of the adjusting rod. According to the structural principle of the parallelogram, the nozzle can always spray cooking oil downwards, which can make the cooking oil on the scallion pancake spray more evenly.

[0021] Preferably, the end of the adjusting rod near the nozzle is rotatably provided with a mounting block, the mounting block and the rotating plate rotate synchronously on the adjusting rod, and the nozzle is detachably inserted into the mounting block.

[0022] By adopting the above technical solution, the rotating block and the adjusting rod rotate together to allow the nozzle to be installed on the mounting block. The two are connected by a quick-release method, which makes it easy to replace different nozzles or remove the nozzle for maintenance.

[0023] Preferably, the nozzle and the oil tank are connected by a flexible hose, and the length of the flexible hose is greater than the farthest distance between the nozzle and the oil tank after the nozzle moves.

[0024] By adopting the above technical solution, the nozzle needs to be connected to the oil tank at all times during the movement process. The flexible hose can be repeatedly bent or stretched to ensure that the oil in the oil tank is continuously delivered to the nozzle position.

[0025] Preferably, the workbench is provided with a conveying assembly for conveying the hand-pulled pancake to be sprayed with oil. The adjustment device also includes a detection frame disposed on the workbench and located in front of the support frame, and a detection assembly disposed on the detection frame. The detection assembly includes a controller. The detection frame is equipped with a laser displacement sensor for detecting the offset position of the hand-pulled pancake on the conveying assembly and a laser diameter sensor for detecting the diameter of the hand-pulled pancake. Both are electrically connected to the controller, and the controller is electrically connected to the swing motor, the rotary motor and the oil pump.

[0026] By adopting the above technical solution, the processed scallion pancake can be placed on the conveying component, allowing it to move to the area where the nozzle sprays cooking oil, thus improving the efficiency of cooking oil spraying. The laser displacement sensor is used to detect the position of the scallion pancake on the conveying component, and the laser diameter sensor is used to detect the size of the scallion pancake to be sprayed with oil. The detected signals are used to control the nozzle to move quickly to the appropriate position and height, so that the cooking oil is sprayed evenly from top to bottom onto the scallion pancake, avoiding the need for manual control of the nozzle's movement and improving the efficiency of cooking oil spraying.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. During the process of spraying oil onto the scallion pancake, the nozzle position can be dynamically adjusted according to the position and size of the scallion pancake, so that the nozzle can quickly move to a position above the scallion pancake. When the scallion pancake reaches the position below the nozzle, the cooking oil is evenly sprayed onto the scallion pancake.

[0029] 2. The synchronous control component can keep the nozzle pointing downwards during the swing of the adjusting rod, ensuring that the oil is sprayed from top to bottom onto the surface of the scallion pancake, so that the oil is spread more evenly on the scallion pancake.

[0030] 3. This application uses a detection component to detect the position of the scallion pancake on the workbench, avoiding manual adjustment. In addition, when dealing with a large number of scallion pancakes that need to be sprayed with oil, the detection component can detect the passing scallion pancakes simultaneously to avoid omissions, and at the same time, it can accurately control all the swing motors, rotation motors and oil pumps. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0032] Figure 2 This is a schematic diagram illustrating the adjustment device in an embodiment of this application.

[0033] Figure 3 This is a schematic diagram illustrating the swing component and the rotation component in an embodiment of this application.

[0034] Explanation of reference numerals in the attached drawings: 1. Workbench; 11. Oil tank; 12. Oil pump; 13. Nozzle; 14. Flexible hose; 2. Conveying assembly; 3. Adjusting device; 31. Support frame; 32. Adjusting rod; 33. Swing assembly; 331. Swing mounting base; 332. Swing shaft; 333. Swing motor; 334. Swing worm gear; 335. Swing worm; 34. Rotating assembly; 341. Rotating motor; 342. Rotating plate; 343. Rotating shaft; 344. Rotating worm gear; 345. Rotating worm; 35. Synchronization control assembly; 351. Fixed plate; 352. Rotating plate; 353. Mounting block; 354. Synchronization shaft; 355. Connecting rod; 36. Detection frame; 37. Laser displacement sensor; 38. Laser diameter sensor. Detailed Implementation

[0035] The preferred embodiments described below are merely examples, and other obvious variations will be apparent to those skilled in the art. The basic principles of this invention as defined in the following description can be applied to other implementations, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of this invention.

[0036] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0037] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0038] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0039] This application discloses a multi-angle adjustable oil-sprinkling device structure for hand-pulled pancakes.

[0040] Reference Figure 1 A multi-angle adjustable hand-pulled pancake oil spraying device includes a rectangular workbench 1 horizontally set on the ground. A conveyor assembly 2, which is a common conveyor belt structure, is set on the workbench 1. The hand-pulled pancake to be sprayed with oil can be placed on the conveyor assembly 2. An oil tank 11 for storing oil is set on the workbench 1, and an oil pump 12 is installed on the oil tank 11. A nozzle 13 for spraying oil onto the hand-pulled pancake is set directly above the workbench 1. The oil tank 11, the oil pump 12, and the nozzle 13 are connected by a pipeline, so that the oil in the oil tank 11 is pumped to the nozzle 13 and sprayed out through the oil pump 12. When the conveyor assembly 2 transports the hand-pulled pancake to the area below the nozzle 13, the oil sprayed by the nozzle 13 can spray onto the surface of the hand-pulled pancake.

[0041] Reference Figure 1 and Figure 2 An adjustment device 3 is provided on the workbench 1 to facilitate adjusting the spraying position of the nozzle 13. The adjustment device 3 includes a support frame 31 spanning across the workbench 1, an adjustment rod 32 hinged to the support frame 31, a swing assembly 33 driving the adjustment rod 32 to swing on the support frame 31, and a rotation assembly 34 controlling the free rotation of the adjustment rod 32 on the support frame 31. The support frame 31 has a U-shaped structure, including a horizontal frame and a pair of vertical frames. The two vertical frames are vertically fixed at both ends of the horizontal frame, and the lower ends of the two vertical frames are vertically fixed to both sides of the workbench 1, allowing the hand-pulled pancake to be sprayed with oil to pass under the support frame 31. An oil tank 11 is installed on the support frame 31, and a connecting pipe is connected to the oil tank 11. An oil pump 12 is connected to the connecting pipe, and a flexible hose 14 is provided between the connecting pipe and the nozzle 13. The length is greater than the distance between the oil tank 11 and the nozzle 13 after adjusting to any position, allowing the flexible hose 14 to have a longer margin and preventing it from being stretched and deformed. A heating component for heating oil is installed inside the oil tank 11 to prevent the oil from solidifying due to prolonged standing. In addition, when using solidified animal fat, it can be heated to melt it into a liquid that is easy to spray. The adjusting rod 32 is located directly above the workbench 1, with one end hinged to the support frame 31. The other end of the adjusting rod 32 can extend towards the conveyor belt of the workbench 1. The nozzle 13 can be installed at the end of the adjusting rod 32 away from the support frame 31 and close to the conveyor belt. The position of the nozzle 13 above the conveyor belt can be changed by swinging and freely rotating the adjusting rod 32, thereby adapting to the hand-grabbed pancakes at different positions on the conveyor belt.

[0042] Reference Figure 1 , Figure 2 and Figure 3The swing assembly 33 includes a swing mounting seat 331 mounted on a support frame 31. The swing mounting seat 331 is located at the middle position of the crossbeam on the support frame 31. A swing shaft 332 is provided near the end of the adjusting rod 32 on the support frame 31. The swing shaft 332 is fixed to the adjusting rod 32. The end of the adjusting rod 32 is hinged to the swing mounting seat 331, and both ends of the swing shaft 332 are rotatably engaged with the swing mounting seat 331. Through the swing shaft 332 and the swing mounting seat 331, the adjusting rod 32 is hinged to the support frame 31, allowing the adjusting rod 32 to swing below the support frame 31. A swing motor 333 is also provided on the swing mounting seat 331 to drive the swing of the adjusting rod 32, moving the nozzle 13 to a suitable position. A space is also provided between the end of the adjusting rod 32 and the swing mounting seat 331. The device includes a gear-driven oscillating component, comprising an oscillating worm gear 334 fixed on the oscillating shaft 332 and an oscillating worm 335 rotatably mounted on the oscillating mounting base 331. The output shaft of the oscillating motor 333 is fixed to the end of the worm. The oscillating worm 335 and the oscillating worm gear 334 mesh with each other. When controlling the position of the nozzle 13, the oscillating motor 333 is activated. Through the transmission of the worm and worm gear, the adjusting rod 32 oscillates above the worktable 1, thereby moving the nozzle 13 to the position for spraying the hand-held pancake. During the transmission process, the oscillating worm gear 335 and the oscillating worm gear 334 can only achieve transmission from the oscillating worm gear 335 to the oscillating worm gear 334, and cannot transmit in the reverse direction. Therefore, when the adjusting rod 32 rotates to the tilted state, the oscillating worm gear 334 and the oscillating worm gear 335 achieve self-locking, preventing the adjusting rod 32 from oscillating under the action of gravity.

[0043] Reference Figure 1 , Figure 2 and Figure 3The rotating assembly 34 includes a rotating motor 341 that controls the rotation of the adjusting rod 32; a swing mounting base 331 rotatably mounted on a support frame 31; a rotating hole is provided in the support frame 31; the swing mounting base 331 is rotatably positioned at the rotating hole; a rotating plate 342 is fixed on the swing mounting base 331; the rotating plate 342 rotatably overlaps the support frame 31 to prevent the swing mounting base 331 from falling off the support frame 31; a rotating shaft 343 is vertically fixed on the rotating plate 342; the rotating shaft 343 is located at the axis of the rotating plate 342; and a rotating worm gear 34 is fixed on the rotating shaft 343. 4. A rotating worm gear 345 is rotatably mounted on the support frame 31. A rotating worm wheel 344 meshes with the rotating worm gear 345. A rotating motor 341 is fixed on the support frame 31, and the output shaft of the rotating motor 341 is fixed to one end of the rotating worm gear 345. When the adjusting rod 32 needs to rotate, the rotating motor 341 is started. Under the action of the rotating worm gear 345 and the rotating worm wheel 344, the swing mounting base 331 is driven to rotate freely, which allows the nozzle 13 to move along the width direction of the workbench 1, allowing the nozzle 13 to move to any position on the conveyor belt above the hand-grabbed pancake.

[0044] The adjusting device 3 also includes a synchronization control component 35 for controlling the rotation of the nozzle 13. The nozzle 13 is rotatably mounted at the end of the adjusting rod 32 and can rotate synchronously with the swing angle of the adjusting rod 32, so that the nozzle 13 always sprays cooking oil downwards. Two sets of synchronization control components 35 are provided, and the two sets of synchronization control components 35 are symmetrically arranged on both sides of the adjusting rod 32. The synchronization control component 35 includes a fixing plate 351 fixed on the swing mounting base 331 and a rotating plate 352 mounted on the adjusting rod 32 and close to the end of the nozzle 13. Both the fixing plate 351 and the rotating plate 352 are circular plate structures. A mounting plate is provided at the end of the adjusting rod 32 close to the nozzle 13. The nozzle 13 is inserted and fitted onto the mounting block 353, and the nozzle 13 and the mounting block 353 can be quickly disassembled, making it convenient to replace nozzles 13 with different spray orifice diameters or different sizes, thereby controlling the spray area. A horizontally arranged synchronous shaft 354 is fixed on the mounting block 353. The two ends of the synchronous shaft 354 are rotatably connected to the adjusting rod 32, so that the mounting block 353 and the adjusting rod 32 are rotatably fitted. The length direction of the nozzle 13 is perpendicular to the length direction of the synchronous shaft 354. The two ends of the synchronous shaft 354 extend from the end of the adjusting rod 32. The rotating plate 352 is fixed to the end of the synchronous shaft 354, so that the rotating plate 352 and the mounting block 353 can rotate synchronously.

[0045] Reference Figure 1 , Figure 2 and Figure 3A connector is provided between the fixed plate 351 and the rotating plate 352. The connector includes a pair of connecting rods 355 disposed between the two. The two connecting rods 355 extend along the length of the adjusting rod 32 and are parallel to the adjusting rod 32. The ends of the two connecting rods 355 are hinged to the fixed plate 351, and the other two ends of the two connecting rods 355 are hinged to the rotating plate 352. The fixed plate 351, the two connecting rods 355, and the rotating plate 352 form a parallelogram structure. When the swing motor 333 controls the adjusting rod 32 to swing, it can control the rotating plate 352 to rotate synchronously. During the rotation of the rotating plate 352, the nozzle 13 on the mounting block 353 is kept vertical, so that the oil sprayed by the nozzle 13 can be evenly sprayed on the hand-pulled pancake. In addition, the connecting rods 355, the fixed plate 351, and the rotating plate 352 can prevent the nozzle 13 from rotating arbitrarily at the end of the adjusting rod 32 after the adjusting rod 32 has rotated.

[0046] Reference Figure 1 , Figure 2 and Figure 3 The adjusting device 3 also includes a detection frame 36 vertically mounted on the workbench 1. The detection frame 36 is located in front of the support frame 31. The scallion pancake to be sprayed can pass through the detection frame 36 before passing through the support frame 31. A detection component for detecting the position and size of the scallion pancake is fixed on the detection frame 36. The detection component includes a controller, a laser displacement sensor 37, and a laser diameter measuring sensor 38. The laser displacement sensor 37 and the laser diameter measuring sensor 38 are electrically connected to the controller. When the laser displacement sensor 37 detects that the position of the scallion pancake is not in the middle of the conveyor belt, it transmits a signal to the controller. The device uses a laser diameter sensor 38 to detect the size of the hand-pulled pancake to be sprayed. The laser displacement sensor 37 and the laser diameter sensor 38 operate synchronously during the detection process, transmitting the detected signal to the controller. The controller is electrically connected to the swing motor 333, the rotation motor 341, and the oil pump 12. After receiving the detection signal, the controller simultaneously controls the swing motor 333, the rotation motor 341, and the oil pump 12 to work, allowing the nozzle 13 to move to a suitable height above the hand-pulled pancake and spray oil evenly onto the surface of the hand-pulled pancake. The area sprayed by the nozzle 13 varies at different heights.

[0047] The implementation principle of the multi-angle adjustable hand-pulled pancake oil spraying device in this application embodiment is as follows: the hand-pulled pancake after production and processing is placed on the conveyor belt. The position and size of the hand-pulled pancake are detected by the laser displacement sensor 37 and the laser diameter sensor 38. The detected signal is transmitted to the controller, which controls the swing motor 333, the rotation motor 341 and the oil pump 12 to control the adjusting rod 32 to swing and rotate to a suitable position, and allows the nozzle 13 to move above the hand-pulled pancake. Then, the oil is sprayed onto the surface of the hand-pulled pancake through the nozzle 13.

[0048] Those skilled in the art should understand that the embodiments of the present invention described above are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the described principles, the implementation of the present invention may have any modifications or variations.

Claims

1. A multi-angle adjustable oil-sprinkling device for hand-pulled pancakes, characterized in that: The device includes a workbench, an oil tank mounted on the workbench, an oil pump mounted on and connected to the oil tank, and a nozzle for spraying oil onto hand-pulled pancakes. The oil tank is connected in sequence to the oil pump and the nozzle. The workbench is also equipped with an adjustment device for adjusting the direction of the nozzle. The adjustment device includes a support frame mounted on the workbench and an adjustment rod hinged to the support frame. The adjustment rod can swing above the workbench and extends towards the workbench. The nozzle is mounted on the end of the adjustment rod away from the support frame. The support frame is equipped with a swinging assembly for driving the adjustment rod to swing.

2. The multi-angle adjustable hand-held pizza oiling device structure according to claim 1, characterized in that: The swing assembly includes a swing shaft that passes through and is fixed to the end of the adjusting rod and a swing mounting seat that is mounted on the support frame. The end of the adjusting rod is hinged to the swing mounting seat, and both ends of the swing shaft are rotatably mounted on the swing mounting seat. The swing mounting seat is also equipped with a swing motor that electrically controls the swing of the adjusting rod.

3. The multi-angle adjustable hand-held pie oiling device structure according to claim 1, characterized in that: A gear swing component is also provided between the end of the adjusting rod and the swing mounting base. The gear swing component includes a swing worm wheel fixed on the swing shaft and a swing worm rotatably mounted on the swing mounting base. The swing worm wheel meshes with the swing worm, and the swing motor controls the rotation of the swing worm.

4. The multi-angle adjustable hand-held pie oiling device structure according to claim 2, characterized in that: The adjusting device further includes a rotating assembly for controlling the rotation of the adjusting rod. The swing mounting base is rotatably mounted on the support frame. The rotating assembly includes a rotating motor for controlling the rotation of the swing mounting base.

5. The multi-angle adjustable hand-held pizza oiling device structure according to claim 4, characterized in that: The rotating assembly further includes a gear rotating component disposed between the swing mounting base and the support frame. The gear rotating component includes a rotating worm gear fixed on the swing mounting base and a rotating worm rotatably disposed on the support frame. The rotating worm gear is coaxially disposed with the swing mounting base and meshes with the rotating worm. The rotating motor controls the rotation of the rotating worm.

6. The multi-angle adjustable hand-held pizza oiling device structure of claim 1, wherein: The adjusting device also includes a synchronization control component that controls the nozzle to rotate synchronously with the adjusting rod. The nozzle is rotatably mounted at the end of the adjusting rod. The synchronization control component includes a fixed plate fixed on the swing mounting base and a rotating plate rotatably mounted on the adjusting rod and close to the end of the nozzle. The rotating plate rotates synchronously with the nozzle. A connecting member is provided between the fixed plate and the rotating plate. The connecting member controls the rotation of the rotating plate and simultaneously ensures that the nozzle always sprays oil downwards.

7. The multi-angle adjustable hand-held pizza oiling device structure according to claim 6, characterized in that: The connector includes a pair of connecting rods disposed between the fixed plate and the rotating plate. The two ends of the connecting rods are respectively hinged to the fixed plate and the rotating plate, and the two connecting rods are parallel to each other, so that the fixed plate, the rotating plate and the pair of connecting rods form a parallelogram structure.

8. The multi-angle adjustable hand-held pizza oiling device structure of claim 1, wherein: The end of the adjusting rod near the nozzle is rotatably equipped with a mounting block. The mounting block and the rotating plate rotate synchronously on the adjusting rod. The nozzle is detachably inserted into the mounting block.

9. The multi-angle adjustable hand-held pizza oiling device structure of claim 1, wherein: The nozzle and the oil tank are connected by a flexible hose, and the length of the flexible hose is greater than the farthest distance between the nozzle and the oil tank after the nozzle moves.

10. The multi-angle adjustable hand-held pizza oiling device structure of claim 1, wherein: The workbench is equipped with a conveying assembly for conveying the hand-pulled pancake to be sprayed with oil. The adjustment device also includes a detection frame set on the workbench and located in front of the support frame, and a detection assembly set on the detection frame. The detection assembly includes a controller. The detection frame is equipped with a laser displacement sensor for detecting the offset position of the hand-pulled pancake on the conveying assembly and a laser diameter sensor for detecting the diameter of the hand-pulled pancake. Both are electrically connected to the controller, and the controller is electrically connected to the swing motor, the rotary motor and the oil pump.