Two-stage lifting automatic positioning device for refrigerator shell

Abstract

The refrigerator shell two-stage lifting automatic positioning device provided by the utility model, including bottom frame, first-stage lifting frame unit, X-direction positioning unit, Y-direction positioning unit and second-stage lifting belt line unit, the first-stage lifting frame unit is arranged on the bottom frame, the X-direction positioning unit is arranged on the bottom frame, the Y-direction positioning unit is arranged on the first-stage lifting frame unit, the second-stage lifting belt line unit is arranged on the first-stage lifting frame unit, the X-direction positioning unit and the Y-direction positioning unit can be suitable for the positioning operation of refrigerator shells of various sizes and models, the structure design of two-stage lifting can facilitate the suction cup mechanical hand to grab the refrigerator shell, and it is favorable for improving production efficiency and reducing production cost.

Description

Technical Field

[0001] This utility model belongs to the field of refrigerator shell production. Specifically, this utility model relates to a two-stage lifting automatic positioning device for refrigerator shells. Background Technology

[0002] The refrigerator shell is an important component of a refrigerator, mainly composed of an outer shell, an inner liner, and an insulation layer. During refrigerator production, high precision is required for the processing of the refrigerator shell. Furthermore, with the continuous updates in refrigerator types and models, the size of the refrigerator shell is also gradually increasing. During production, the positioning device for the refrigerator shell has poor flexibility and cannot adapt to the positioning of various refrigerator shells. Changes in refrigerator size also increase the difficulty for suction cup robotic arms to grasp refrigerators. The suction cup robotic arm needs to descend to different heights when grasping different refrigerator sizes, which can easily lead to grasping failures during line changes, causing safety accidents.

[0003] To address the aforementioned issues, patent application number 2018102286800 discloses a transport device for refrigerator casings on a refrigerator factory production line. This device includes a horizontally positioned base with several equally spaced slide rails installed on its top. Each slide rail has a locking block at its top. Adjacent slide rails are connected to a base plate via these locking blocks. A limiting block is fitted onto the outside of a fixed post, and a connecting plate is screwed to the top of the limiting block. The user directly engages the locking blocks with the slide rails and connects the base plate to the locking blocks with screws, allowing the base plate to slide on the slide rails via the locking blocks, reducing movement resistance and minimizing changes in the movement trajectory. The limiting block is then fitted onto the fixed post, and the connecting plate is connected to the limiting block and the positioning plate at both ends, respectively. However, this method fails to solve the aforementioned problems.

[0004] Therefore, in order to improve or solve at least one of the above problems, a two-stage lifting automatic positioning device for refrigerator shells is provided, which is applicable to the positioning operation of refrigerator shells of various sizes and models, facilitates the gripping of refrigerator shells by suction cup robots, and is conducive to improving production efficiency and reducing production costs. Summary of the Invention

[0005] This utility model is designed to solve the aforementioned problems. Its purpose is to provide a two-stage lifting automatic positioning device for refrigerator shells that is applicable to positioning operations of various sizes and models, facilitates gripping of refrigerator shells by suction cup robots, improves production efficiency, and reduces production costs. To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a two-stage lifting automatic positioning device for a refrigerator shell, characterized by including a base frame, a primary lifting frame unit, an X-axis positioning unit, a Y-axis positioning unit, and a secondary lifting conveyor belt unit. The primary lifting frame unit is mounted on the base frame, the X-axis positioning unit is mounted on the base frame, the Y-axis positioning unit is mounted on the primary lifting frame unit, and the secondary lifting conveyor belt unit is mounted on the primary lifting frame unit.

[0006] The two-stage lifting automatic positioning device for refrigerator shell provided by this utility model may also have the following features: the first-stage lifting frame unit includes a first-stage lifting cylinder, a guide seat, a guide column, and a lifting frame body. The first-stage lifting cylinder is set on the bottom frame, the guide seat is set on the bottom frame, one end of the guide column is movably set in the guide seat, and the other end of the guide column is connected to the lifting frame body.

[0007] The two-stage lifting automatic positioning device for refrigerator shell provided by this utility model may also have the following features: the first-stage lifting frame unit further includes a guide limiting component, which includes a support column, a rack, a gear, a rotating shaft, and a bearing seat. The support column is set on the base frame, the rack is set on the support column, the bearing seat is set on the lifting frame body, the rotating shaft is movably inserted into the bearing seat, the gear is sleeved on the rotating shaft, and the gear meshes with the rack.

[0008] The refrigerator shell two-stage lifting automatic positioning device provided by this utility model may also have the following features: the X-direction positioning unit includes an X-direction first positioning frame, an X-direction second positioning frame, and an X-direction positioning drive assembly. The X-direction first positioning frame is set on the bottom frame, and the X-direction positioning drive assembly is set on the bottom frame and connected to the X-direction second positioning frame. The X-direction first positioning frame and the X-direction second positioning frame are respectively located on both sides of the lifting frame body.

[0009] The refrigerator shell two-stage lifting automatic positioning device provided by this utility model may also have the following features: the X-direction positioning drive assembly includes an X-direction drive cylinder, an X-direction guide rail, an X-direction slider and a slide plate. The X-direction drive cylinder is set on the base frame, the X-direction guide rail is set on the base frame, the X-direction slider is movably set on the X-direction guide rail, the X-direction slider is connected to the slide plate, the X-direction drive cylinder is connected to the slide plate, and the X-direction second positioning frame is set on the slide plate.

[0010] The refrigerator shell two-stage lifting automatic positioning device provided by this utility model may also have the following feature: the X-direction positioning unit further includes a roller assembly, which is set on the lifting frame body and includes a mounting plate and a rolling roller set on the mounting plate, with the end of the rolling roller being movably connected to the mounting plate.

[0011] The two-stage lifting automatic positioning device for the refrigerator shell provided by this utility model may also have the following feature: the Y-axis positioning unit includes a Y-axis drive assembly, a Y-axis first positioning frame, and a Y-axis second positioning frame. The Y-axis drive assembly is disposed on the lifting frame body and connected to the Y-axis first positioning frame and the Y-axis second positioning frame. The Y-axis first positioning frame includes a crossbeam and a positioning frame disposed on the crossbeam. The two-stage lifting automatic positioning device for the refrigerator shell provided by this utility model may also have the following features: the Y-axis drive assembly includes a Y-axis drive motor, a lead screw seat, a first lead screw, a second lead screw, a first lead screw slide, a second lead screw slide, a Y-axis guide rail, and a Y-axis slider. The Y-axis drive motor is mounted on the lifting frame body, the lead screw seat is located at the ends of the first and second lead screws, the first lead screw is connected to the second lead screw, the first lead screw slide is movably mounted on the first lead screw and connected to the first Y-axis positioning frame, the second lead screw slide is movably mounted on the second lead screw and connected to the second Y-axis positioning frame, the Y-axis guide rail is mounted on the lifting frame body, and the Y-axis slider is movably mounted on the Y-axis guide rail and connected to either the first or second lead screw slide.

[0012] The refrigerator shell two-stage lifting automatic positioning device provided by this utility model may also have the following features: the two-stage lifting belt unit includes a two-stage lifting cylinder, a conveyor belt bracket and a conveyor belt. The two-stage lifting cylinder is set on the lifting frame body and connected to the conveyor belt bracket. The conveyor belt is set on the conveyor belt bracket.

[0013] The two-stage lifting automatic positioning device for refrigerator shell provided by this utility model may also have the following feature: the conveyor belt is located between the rolling rollers. The technical advantages of this utility model are as follows: The two-stage lifting automatic positioning device for refrigerator shells provided by this utility model includes a base frame, a primary lifting frame unit, an X-axis positioning unit, a Y-axis positioning unit, and a secondary lifting conveyor belt unit. The primary lifting frame unit is set on the base frame, the X-axis positioning unit is set on the base frame, the Y-axis positioning unit is set on the primary lifting frame unit, and the secondary lifting conveyor belt unit is set on the primary lifting frame unit. The X-axis positioning unit and the Y-axis positioning unit can be used for positioning operations of refrigerator shells of various sizes and models. The two-stage lifting structure design facilitates the gripper robot to grasp the refrigerator shell, which is beneficial to improving production efficiency and reducing production costs. Attached Figure Description

[0014] This manual includes the following figures, which illustrate the following: Figure 1 This is a schematic diagram of the structure of the two-stage lifting and automatic positioning device for the refrigerator shell in an embodiment of this utility model. Figure 1 ; Figure 2This is a schematic diagram of the structure of the two-stage lifting and automatic positioning device for the refrigerator shell in an embodiment of this utility model. Figure 2 ; Figure 3 This is a structural schematic diagram of the primary lifting frame unit in an embodiment of this utility model; Figure 4 This is a schematic diagram of the structure of the guide and limiting component in an embodiment of this utility model; Figure 5 This is a schematic diagram of the X-direction positioning unit in an embodiment of this utility model; Figure 6 This is a schematic diagram of the X-axis positioning drive component in an embodiment of this utility model; Figure 7 This is a schematic diagram of the roller conveyor assembly in an embodiment of this utility model; Figure 8 This is a schematic diagram of the Y-axis positioning unit in an embodiment of this utility model. Figure 1 ; Figure 9 This is a schematic diagram of the Y-axis positioning unit in an embodiment of this utility model. Figure 2 ; Figure 10 This is a schematic diagram of the structure of the two-stage lifting belt conveyor unit in an embodiment of this utility model; Figure 11 This is a schematic diagram of the structure of the conveyor belt, rolling roller and positioning frame in an embodiment of this utility model.

[0015] The components marked in the diagram are: base frame-10, first-stage lifting frame unit-20, first-stage lifting cylinder-21, guide seat-22, guide column-23, lifting frame body-24, support column-251, rack-252, gear-253, rotating shaft-254, bearing seat-255, X-axis positioning unit-30, X-axis first positioning frame-31, X-axis second positioning frame-32, X-axis positioning drive assembly-33, X-axis drive cylinder-331, X-axis guide rail-332, X-axis slider-333, slide plate-334, roller conveyor assembly-35, mounting plate- 351, Rolling Roller; 352, Y-axis Positioning Unit; 40, Y-axis Drive Assembly; 41, Y-axis Drive Motor; 411, Lead Screw Seat; 412, First Lead Screw; 413, Second Lead Screw; 414, First Lead Screw Slide; 415, Second Lead Screw Slide; 416, Y-axis Guide Rail; 417, Y-axis Slider; 418, Y-axis First Positioning Frame; 42, Crossbeam; 421, Positioning Frame; 422, Y-axis Second Positioning Frame; 43, Secondary Lifting Belt Conveyor Unit; 50, Secondary Lifting Cylinder; 51, Conveyor Belt Support; 52, Conveyor Belt; 53. Detailed Implementation

[0016] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.

[0017] Figure 1 This is a schematic diagram of the structure of the two-stage lifting and automatic positioning device for the refrigerator shell in an embodiment of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the two-stage lifting and automatic positioning device for the refrigerator shell in an embodiment of this utility model. Figure 2 .

[0018] like Figure 1 and Figure 2 As shown, the two-stage lifting automatic positioning device for refrigerator shells provided by this utility model includes a base frame 10, a primary lifting frame unit 20, an X-axis positioning unit 30, a Y-axis positioning unit 40, and a secondary lifting conveyor belt unit 50. The primary lifting frame unit 20 is mounted on the base frame 10, the X-axis positioning unit 30 is mounted on the base frame 10, the Y-axis positioning unit 40 is mounted on the primary lifting frame unit 20, and the secondary lifting conveyor belt unit 50 is mounted on the primary lifting frame unit 20. The X-axis positioning unit 30 and the Y-axis positioning unit 40 can be used for positioning operations of refrigerator shells of various sizes and models. The two-stage lifting structure design facilitates the gripper robot to grasp the refrigerator shell, which is beneficial to improving production efficiency and reducing production costs.

[0019] Figure 3 This is a structural schematic diagram of the first-stage lifting frame unit in an embodiment of this utility model.

[0020] like Figure 3 As shown, the primary lifting frame unit 20 includes a primary lifting cylinder 21, a guide seat 22, a guide column 23, and a lifting frame body 24. The primary lifting cylinder 21 is mounted on the base frame 10, the guide seat 22 is mounted on the base frame 10, one end of the guide column 23 is retractably mounted inside the guide seat 22, and the other end of the guide column 23 is connected to the lifting frame body 10. Four sets of guide seats 22 and guide columns 23 are respectively mounted at the four corners of the lifting frame body 24. The retractable end of the primary lifting cylinder 21 is connected to the lifting frame body 10, so that the primary lifting cylinder 21 can drive the lifting frame body 10 to perform lifting and lowering movements.

[0021] Figure 4 This is a schematic diagram of the structure of the guide and limiting component in an embodiment of this utility model.

[0022] like Figure 4As shown, the primary lifting frame unit 20 also includes a guide and limiting assembly 25. The guide and limiting assembly 25 includes a support column 251, a rack 252, a gear 253, a rotating shaft 254, and a bearing seat 255. The support column 251 is mounted on the base frame 10, the rack 252 is mounted vertically on the support column 251, the bearing seat 255 is mounted on the lifting frame body 24, the rotating shaft 254 is rotatably mounted inside the bearing seat 255, and the gear 253 is sleeved on the rotating shaft 254. The gear 253 meshes with the rack 252. When the lifting frame body 24 moves vertically, the gear 253 rolls along the rack 252, thereby guiding and limiting the lifting movement of the lifting frame body 24 and improving the stability of the lifting process of the lifting frame body 24.

[0023] Figure 5 This is a schematic diagram of the X-direction positioning unit in an embodiment of this utility model; Figure 6 This is a schematic diagram of the X-axis positioning drive component in an embodiment of this utility model.

[0024] like Figure 5 and Figure 6 As shown, the X-axis positioning unit 30 includes an X-axis first positioning frame 31, an X-axis second positioning frame 32, and an X-axis positioning drive assembly 33. The X-axis first positioning frame 31 is mounted on the base frame 10, and the X-axis positioning drive assembly 33 is mounted on the base frame 10 and connected to the X-axis second positioning frame 32. The X-axis first positioning frame 31 and the X-axis second positioning frame 32 are located on both sides of the lifting frame body 24, respectively.

[0025] like Figure 5 and Figure 6 As shown, the X-axis positioning drive assembly 33 includes an X-axis drive cylinder 331, an X-axis guide rail 332, an X-axis slider 333, and a slide plate 334. The X-axis drive cylinder 331 is mounted on the base frame 10, the X-axis guide rail 332 is mounted on the base frame 10, the X-axis slider 333 is slidably mounted on the X-axis guide rail 332, the X-axis slider 333 is connected to the slide plate 334, the X-axis drive cylinder 331 is connected to the slide plate 334, and the X-axis second positioning frame 32 is mounted on the slide plate 334. This allows the X-axis drive cylinder 331 to drive the X-axis second positioning frame 32 to move along the X-axis guide rail 332, causing the X-axis second positioning frame 32 to move closer to or away from the X-axis first positioning frame 31. By moving the X-axis second positioning frame 32 closer to the X-axis first positioning frame 31, the refrigerator shell is clamped, thus achieving the positioning of the refrigerator shell in the length direction.

[0026] Figure 7 This is a schematic diagram of the roller conveyor assembly in an embodiment of this utility model.

[0027] like Figure 7As shown, the X-direction positioning unit 30 also includes a roller conveyor assembly 35, which is mounted on the lifting frame body 24. The roller conveyor assembly 35 includes a mounting plate 351 and a rolling roller 352 mounted on the mounting plate 351. The end of the rolling roller 352 is movably connected to the mounting plate 351, so that the rolling roller 352 is rotatably mounted between the mounting plates 351. The axial direction of the rolling roller 352 is perpendicular to the moving direction of the X-direction second positioning frame 32, so that the refrigerator shell can roll on the roller conveyor assembly 35 during the process of the first positioning frame 31 and the X-direction second positioning frame 32 approaching each other to clamp the refrigerator shell, thereby ensuring that the first positioning frame 31 and the X-direction second positioning frame 32 can clamp the refrigerator shell and improve the positioning accuracy of the refrigerator shell in the length direction.

[0028] Figure 8 This is a schematic diagram of the Y-axis positioning unit in an embodiment of this utility model. Figure 1 ; Figure 9 This is a schematic diagram of the Y-axis positioning unit in an embodiment of this utility model. Figure 2 .

[0029] like Figure 8 and Figure 9 As shown, the Y-axis positioning unit 40 includes a Y-axis drive assembly 41, a Y-axis first positioning frame 42, and a Y-axis second positioning frame 43. The Y-axis drive assembly 41 is mounted on the lifting frame body 24 and connected to the Y-axis first positioning frame 42 and the Y-axis second positioning frame 43. The Y-axis drive assembly 41 drives the Y-axis first positioning frame 42 and the Y-axis second positioning frame 43 to move closer or further apart, clamping the refrigerator shell and achieving positioning of the refrigerator shell in the width direction. The Y-axis first positioning frame 42 and the Y-axis second positioning frame 43 have the same structure. The Y-axis first positioning frame 42 includes a crossbeam 421 and positioning frames 422 mounted on the crossbeam 421. The three positioning frames 422 are evenly arranged on the crossbeam 421 to improve the reliability of positioning the refrigerator shell in the width direction.

[0030] like Figure 8 and Figure 9As shown, the Y-axis drive assembly 41 includes a Y-axis drive motor 411, a lead screw seat 412, a first lead screw 413, a second lead screw 414, a first lead screw slide 415, a second lead screw slide 416, a Y-axis guide rail 417, and a Y-axis slider 418. The Y-axis drive motor 411 is mounted on the lifting frame body 24 and is connected to the first lead screw 414 via chain drive. The lead screw seat 412 is located at the ends of the first lead screw 413 and the second lead screw 414. The first lead screw 413 is connected to the second lead screw 414. The threads of rod 413 and the second lead screw 414 are opposite in direction. The first lead screw slide 415 is movably fitted onto the first lead screw 413 through a threaded engagement. The second lead screw slide 416 is movably fitted onto the second lead screw 414 through a threaded engagement. The Y-axis guide rail 417 is mounted on the lifting frame body 24. The Y-axis slider 418 is slidably mounted on the Y-axis guide rail 417 and connected to the first lead screw slide 415 or the second lead screw slide 416, so that the first positioning frame 42 and the Y-axis second positioning frame 43 can operate smoothly and stably.

[0031] Figure 10 This is a schematic diagram of the structure of the secondary lifting belt conveyor unit in an embodiment of this utility model.

[0032] like Figure 10 As shown, the secondary lifting belt conveyor unit 50 includes a secondary lifting cylinder 51, a conveyor belt bracket 52, and a conveyor belt 53. The secondary lifting cylinder 51 is mounted on the lifting frame body 24 and connected to the conveyor belt bracket 52. The conveyor belt 53 is mounted on the conveyor belt bracket 52, so that the secondary lifting cylinder 51 drives the conveyor belt bracket 52 to perform lifting and lowering movements.

[0033] Figure 11 This is a schematic diagram of the structure of the conveyor belt, rolling roller and positioning frame in an embodiment of this utility model.

[0034] like Figure 11 As shown, the conveyor belt 53 is located between the rolling rollers 352. The rolling rollers 352 pass through the positioning frame 422. During the movement of the first positioning frame 42 in the Y direction and the second positioning frame 43 in the Y direction, the positioning frame 422 can move along the rolling rollers 352. The conveyor belt 53 is located between the rolling rollers 352 and the positioning frame 422. The secondary lifting cylinder 51 can drive the conveyor belt 53 to move upward, so that the height of the conveyor belt 53 is higher than the height of the rolling rollers 352; or drive the conveyor belt 53 to move downward, so that the height of the conveyor belt 53 is lower than the height of the rolling rollers 352.

[0035] When the refrigerator shell is positioned and transferred using the two-stage lifting automatic positioning device for the refrigerator shell provided by this utility model, the secondary lifting belt conveyor unit 50 is in a lifting state, and the height of the conveyor belt 53 is higher than the height of the rolling roller 352, so that the secondary lifting belt conveyor unit 50 can receive the refrigerator shell flowing from the previous process. When the refrigerator shell reaches above the secondary lifting belt conveyor unit 50, the secondary lifting cylinder 51 drives the conveyor belt 53 to move downward, so that the refrigerator shell falls onto the roller assembly 35, and the bottom of the refrigerator shell abuts against the rolling roller 352. The X-axis positioning drive assembly 33 drives the X-axis second positioning frame 32 to move towards the X-axis first positioning frame 35. Positioning frame 31 approaches and clamps the refrigerator shell, achieving positioning of the refrigerator shell in the length direction; Y-direction drive assembly 41 drives the first Y-direction positioning frame 42 and the second Y-direction positioning frame 43 to approach or move away from each other, clamping the refrigerator shell, achieving positioning of the refrigerator shell in the width direction, thus completing the positioning of the refrigerator shell; the first-stage lifting cylinder 21 works, driving the lifting frame body 24 to rise; the second-stage lifting cylinder 51 works, driving the conveyor belt bracket 52 and the conveyor belt 53 to rise, lifting the refrigerator shell. The two-stage lifting structure design facilitates the suction cup robot to grasp the refrigerator shell, which is beneficial to improving production efficiency and reducing production costs.

[0036] The two-stage lifting automatic positioning device for refrigerator shells provided by this utility model includes a base frame 10, a primary lifting frame unit 20, an X-axis positioning unit 30, a Y-axis positioning unit 40, and a secondary lifting conveyor belt unit 50. The primary lifting frame unit 20 is mounted on the base frame 10, the X-axis positioning unit 30 is mounted on the base frame 10, the Y-axis positioning unit 40 is mounted on the primary lifting frame unit 20, and the secondary lifting conveyor belt unit 50 is mounted on the primary lifting frame unit 20. The X-axis positioning unit 30 and the Y-axis positioning unit 40 can be used for positioning operations of refrigerator shells of various sizes and models. The two-stage lifting structure design facilitates the gripper robot to grasp the refrigerator shell, which is beneficial to improving production efficiency and reducing production costs.

[0037] When the refrigerator shell is positioned and transferred using the two-stage lifting automatic positioning device for the refrigerator shell provided by this utility model, the secondary lifting belt conveyor unit 50 is in a lifting state, and the height of the conveyor belt 53 is higher than the height of the rolling roller 352, so that the secondary lifting belt conveyor unit 50 can receive the refrigerator shell flowing from the previous process. When the refrigerator shell reaches above the secondary lifting belt conveyor unit 50, the secondary lifting cylinder 51 drives the conveyor belt 53 to move downward, so that the refrigerator shell falls onto the roller assembly 35, and the bottom of the refrigerator shell abuts against the rolling roller 352. The X-axis positioning drive assembly 33 drives the X-axis second positioning frame 32 to move towards the X-axis first positioning frame 35. Positioning frame 31 approaches and clamps the refrigerator shell, achieving positioning of the refrigerator shell in the length direction; Y-direction drive assembly 41 drives the first Y-direction positioning frame 42 and the second Y-direction positioning frame 43 to approach or move away from each other, clamping the refrigerator shell, achieving positioning of the refrigerator shell in the width direction, thus completing the positioning of the refrigerator shell; the first-stage lifting cylinder 21 works, driving the lifting frame body 24 to rise; the second-stage lifting cylinder 51 works, driving the conveyor belt bracket 52 and the conveyor belt 53 to rise, lifting the refrigerator shell. The two-stage lifting structure design facilitates the suction cup robot to grasp the refrigerator shell, which is beneficial to improving production efficiency and reducing production costs.

[0038] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A two-stage lifting and automatic positioning device for a refrigerator casing, characterized in that, It includes a base frame (10), a primary lifting frame unit (20), an X-axis positioning unit (30), a Y-axis positioning unit (40), and a secondary lifting conveyor belt unit (50). The primary lifting frame unit (20) is mounted on the base frame (10), the X-axis positioning unit (30) is mounted on the base frame (10), the Y-axis positioning unit (40) is mounted on the primary lifting frame unit (20), and the secondary lifting conveyor belt unit (50) is mounted on the primary lifting frame unit (20).

2. The two-stage lifting automatic positioning device for the refrigerator casing according to claim 1, characterized in that, The primary lifting frame unit (20) includes a primary lifting cylinder (21), a guide seat (22), a guide column (34), and a lifting frame body (24). The primary lifting cylinder (21) is mounted on the bottom frame (10), the guide seat (22) is mounted on the bottom frame (10), one end of the guide column (34) is movably mounted in the guide seat (22), and the other end of the guide column (34) is connected to the lifting frame body (24).

3. The two-stage lifting automatic positioning device for the refrigerator casing according to claim 2, characterized in that, The primary lifting frame unit (20) further includes a guide limiting component (25), which includes a support column (251), a rack (252), a gear (253), a rotating shaft (254), and a bearing seat (255). The support column (251) is mounted on the bottom frame (10), the rack (252) is mounted on the support column (251), the bearing seat (255) is mounted on the lifting frame body (24), the rotating shaft (254) is movably inserted into the bearing seat (255), the gear (253) is sleeved on the rotating shaft (254), and the gear (253) meshes with the rack (252).

4. The two-stage lifting automatic positioning device for the refrigerator casing according to claim 2, characterized in that, The X-direction positioning unit (30) includes an X-direction first positioning frame (31), an X-direction second positioning frame (32), and an X-direction positioning drive assembly (33). The X-direction first positioning frame (31) is mounted on the bottom frame (10), and the X-direction positioning drive assembly (33) is mounted on the bottom frame (10) and connected to the X-direction second positioning frame (32). The X-direction first positioning frame (31) and the X-direction second positioning frame (32) are located on both sides of the lifting frame body (24).

5. The two-stage lifting automatic positioning device for the refrigerator casing according to claim 4, characterized in that, The X-axis positioning drive assembly (33) includes an X-axis drive cylinder (331), an X-axis guide rail (332), an X-axis slider (333), and a slide plate (334). The X-axis drive cylinder (331) is mounted on the bottom frame (10), the X-axis guide rail (332) is mounted on the bottom frame (10), the X-axis slider (333) is movably mounted on the X-axis guide rail (332), the X-axis slider (333) is connected to the slide plate (334), the X-axis drive cylinder (331) is connected to the slide plate (334), and the X-axis second positioning frame (32) is mounted on the slide plate (334).

6. The two-stage lifting automatic positioning device for the refrigerator casing according to claim 5, characterized in that, The X-axis positioning unit (30) further includes a roller conveyor assembly (35), which is disposed on the lifting frame body (24) and includes a mounting plate (351) and a rolling roller (352) disposed on the mounting plate (351). The end of the rolling roller (352) is movably connected to the mounting plate (351).

7. The two-stage lifting automatic positioning device for the refrigerator casing according to claim 2, characterized in that, The Y-direction positioning unit (40) includes a Y-direction drive assembly (41), a Y-direction first positioning frame (42), and a Y-direction second positioning frame (43). The Y-direction drive assembly (41) is disposed on the lifting frame body (24) and connected to the Y-direction first positioning frame (42) and the Y-direction second positioning frame (43). The Y-direction first positioning frame (42) includes a crossbeam (421) and a positioning frame (422) disposed on the crossbeam (421).

8. The two-stage lifting automatic positioning device for the refrigerator casing according to claim 7, characterized in that, The Y-axis drive assembly (41) includes a Y-axis drive motor (411), a lead screw seat (412), a first lead screw (413), a second lead screw (414), a first lead screw slide (415), a second lead screw slide (416), a Y-axis guide rail (417), and a Y-axis slider (418). The Y-axis drive motor (411) is mounted on the lifting frame body (24). The lead screw seat (412) is mounted at the ends of the first lead screw (413) and the second lead screw (414). The first lead screw (413) is connected to the second lead screw (414). The first lead screw slide (415) is mounted to the ends of the first lead screw (413) and the second lead screw (416). 15) The first lead screw slide (415) is movably mounted on the first lead screw (413), and the first lead screw slide (415) is connected to the first positioning frame (42) in the Y direction. The second lead screw slide (416) is movably mounted on the second lead screw (414), and the second lead screw slide (416) is connected to the second positioning frame (43) in the Y direction. The Y guide rail (417) is set on the lifting frame body (24), and the Y slider (418) is movably set on the Y guide rail (417) and connected to the first lead screw slide (415) or the second lead screw slide (416).

9. The two-stage lifting automatic positioning device for the refrigerator casing according to claim 6, characterized in that, The secondary lifting belt unit (50) includes a secondary lifting cylinder (51), a conveyor belt bracket (52) and a conveyor belt (53). The secondary lifting cylinder (51) is mounted on the lifting frame body (24) and connected to the conveyor belt bracket (52). The conveyor belt (53) is mounted on the conveyor belt bracket (52).

10. The two-stage lifting automatic positioning device for the refrigerator casing according to claim 9, characterized in that, The conveyor belt (53) is located between the rolling rollers (352).

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