Lifting mechanism of box opening device and self-service pizza machine

Abstract

The utility model discloses a lifting mechanism of a box opening device and a self-service pizza machine, the lifting mechanism comprises a box opening frame, a mounting seat, a driving mechanism and a lifting frame, the box opening frame is mounted at the top of the lifting frame, the lifting frame is mounted on the mounting seat, and the output end of the driving mechanism is connected with the lifting frame and used for pushing the lifting frame to lift; the lifting frame has a contraction state and an extension state, when the driving mechanism drives the lifting frame to descend, the lifting frame is in the contraction state, and the height of the lifting frame is decreased, and when the driving mechanism drives the lifting frame to ascend, the lifting frame is in the extension state, and the height of the lifting frame is increased. The box opening frame is supported through the lifting frame, so that the box opening frame always keeps stable lifting in the lifting process, the stress of the lifting frame is uniform, and the abrasion of the power unit can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic vending machines, in particular to a lifting mechanism of a box opening device and a self-service pizza machine. Background Art

[0002] Self-service vending machines are commonly used equipment for commercial automation. They are not restricted by time and place, can save manpower and facilitate transactions. They are a new form of commercial retail, also known as 24-hour mini supermarkets. And with the changes in the market, vending machines have also appeared in various styles, including vending machines that sell pizza, etc.

[0003] The self-service pizza machine needs to place the pizza in a pizza box and then put it in a storage device for refrigeration or freezing, so as to maintain the quality of the pizza for a long time. When in use, the pizza is taken out of the storage device by the handling device and sent to the box opening device. The box opening device positions the pizza box through the positioning mechanism, and the lifting mechanism drives the box opening frame to open the pizza box. The conveying mechanism sends the pizza in the pizza box to the heating device for heating. After the heating is completed, the conveying mechanism takes out the pizza, puts it back into the pizza box and sends it to the delivery port.

[0004] The existing lifting mechanism mainly uses a linear motor to drive the box opening frame to lift and lower. The push rod of the box opening frame extends into the pizza box to push the pizza box lid open. This lifting method has uneven force, and long-term use will cause the linear motor to wear seriously and gradually cause lifting and shaking.

[0005] In view of this, it is necessary to propose a new technical solution to solve the above technical problems. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a lifting mechanism for a box opening device and a self-service pizza machine to solve the problems raised in the background technology.

[0007] In order to achieve the above-mentioned object, the utility model provides a lifting mechanism of a box opening device in a first aspect, comprising a box opening frame, a mounting seat, a driving mechanism and a lifting frame, wherein the box opening frame is mounted on the top of the lifting frame, the lifting frame is mounted on the mounting seat, and the output end of the driving mechanism is connected to the lifting frame for driving the lifting frame to move up and down;

[0008] The lifting frame has a retracted state and an extended state. When the driving mechanism drives the lifting frame to descend, the lifting frame is in the retracted state and the height of the lifting frame becomes shorter. When the driving mechanism drives the lifting frame to ascend, the lifting frame is in the extended state and the height of the lifting frame becomes longer. The lifting frame supports the box opening frame, so that the box opening frame can always maintain a stable lifting process, and the lifting frame is evenly stressed, which can reduce the wear of the power unit.

[0009] In a further technical solution, the lifting frame includes a mounting plate and a lifting assembly, the bottom of the lifting assembly is slidably mounted on the mounting seat, the mounting plate is slidably mounted on the top of the lifting assembly, and the lifting frame is mounted on the mounting plate. By means of sliding mounting, the lifting frame can slide between the mounting seat and the mounting plate, thereby realizing the lifting of the box opening frame, and at the same time, the force output by the driving mechanism can be transmitted to the box opening frame more evenly.

[0010] In a further technical solution, the lifting assembly includes a first lifting rod and a second lifting rod, the first lifting rod and the second lifting rod are rotatably connected, and the first lifting rod and the second lifting rod are in an "X" shape. By means of the rotatable connection, the first lifting rod and the second lifting rod can be relatively opened and closed, thereby realizing the lifting of the box opening frame, and the structure is simple.

[0011] In a further technical solution, the first end of the first lifting rod is slidably mounted on the mounting plate, the second end of the first lifting rod is fixedly mounted on the mounting seat, the first end of the second lifting rod is slidably mounted on the mounting plate, and the second end of the second lifting rod is fixedly mounted on the mounting seat;

[0012] or

[0013] The first end of the first lifting rod is fixedly mounted on the mounting plate, the second end of the first lifting rod is slidably mounted on the mounting seat, the first end of the second lifting rod is fixedly mounted on the mounting plate, and the second end of the second lifting rod is slidably mounted on the mounting seat. Through this arrangement, one end of the first lifting rod and the second lifting rod is fixed on the mounting plate and the mounting seat, and the other end of the first lifting rod and the second lifting rod slides on the mounting plate and the mounting seat, thereby realizing the telescopic movement of the lifting assembly and the lifting and lowering of the box opening frame, with a simple structure, low production cost, and strong stability.

[0014] In a further technical solution, a guide mechanism is respectively provided on the top of the mounting seat and the bottom of the mounting plate, and the output end of the driving mechanism is connected to one of the guide mechanisms; the first end of the first lifting rod and the first end of the second lifting rod are respectively rotatably mounted on the guide mechanisms;

[0015] or

[0016] The second end of the first lifting rod and the second end of the second lifting rod are rotatably mounted on the guide mechanism respectively. This arrangement enables the first lifting rod and the second lifting rod to slide on the mounting seat and the mounting plate through the guide mechanism, thereby realizing the telescopic movement of the lifting assembly and the lifting and lowering of the box opening frame, with a simple structure, low production cost and strong stability.

[0017] In a further technical solution, the guiding mechanism includes a slider and a guide rail, the two guide rails are respectively installed on the top of the mounting seat and the bottom of the mounting plate, one slider is slidably installed on one guide rail, a screw rod is provided at the output end of the driving mechanism, a nut sleeve is provided on the screw rod, one of the sliders is connected to the nut sleeve, and the driving mechanism is installed on the mounting seat or the mounting plate; the screw rod is driven to rotate by the driving mechanism, and the slider moves along the screw rod through the nut sleeve. The structure is simple, the transmission accuracy can be guaranteed, and the stability is strong.

[0018] The first end of the first lifting rod and the first end of the second lifting rod are respectively rotatably mounted on one of the sliding blocks;

[0019] or

[0020] The second end of the first lifting rod and the second end of the second lifting rod are rotatably mounted on one of the sliding blocks respectively.

[0021] In a further technical solution, the first end of the first lifting rod is slidably mounted on the mounting plate, the second end of the first lifting rod is slidably mounted on the mounting seat, the first end of the second lifting rod is slidably mounted on the mounting plate, and the second end of the second lifting rod is slidably mounted on the mounting seat. This arrangement enables the two ends of the first lifting rod and the second lifting rod to slide on the mounting plate and the mounting seat respectively, thereby realizing the telescopic movement of the lifting assembly and the lifting and lowering of the box opening rack, with a simple structure, low production cost, and strong stability.

[0022] In a further technical solution, the top of the mounting seat and the bottom of the mounting plate are respectively provided with guide mechanisms, the two ends of the first lifting rod and the two ends of the second lifting rod are respectively rotatably mounted on the two guide mechanisms, and the output end of the driving mechanism is connected to one of the guide mechanisms. The driving mechanism drives the guide mechanism to move, thereby driving the first lifting rod and the second lifting rod to move closer or apart, respectively, to realize the lifting of the box opening frame, and further enhance the stability of the lifting.

[0023] In a further technical solution, the guide mechanism includes a first slider, a second slider and a guide rail, the two guide rails are respectively mounted on the top of the mounting seat and the bottom of the mounting plate, the first slider and the second slider are slidably mounted on the guide rails, a screw rod is provided at the output end of the driving mechanism, a first nut sleeve and a second nut sleeve are provided on the screw rod, wherein one of the first sliders is connected to the first nut sleeve, and one of the second sliders is connected to the second nut sleeve, the screw threads in the first nut sleeve and the second nut sleeve are opposite, and the driving mechanism is mounted on the mounting seat or the mounting plate. The driving mechanism drives the first nut sleeve and the second nut sleeve to close or separate toward the middle of the screw rod respectively through the screw rod, thereby realizing the movement of the guide mechanism through the first slider and the second slider, the structure is simple, the transmission accuracy can be ensured, and the stability is strong.

[0024] In a second aspect, the utility model also provides a self-service pizza machine, including a lifting mechanism of the box opening device.

[0025] Compared with the prior art, the utility model brings the following technical effects:

[0026] The lifting mechanism of the box opening device of the utility model has a simple structure and is easy to use. The box opening frame is supported by the lifting frame, so that the box opening frame can always maintain a stable lifting during the lifting process, and the lifting frame is evenly stressed, which can reduce the wear of the power unit.

[0027] The self-service pizza machine of the utility model includes all the technical features and beneficial effects of the lifting mechanism of the box opening device, so they are not described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of the lifting mechanism of the box opening device of the utility model.

[0030] Figure 2 yes Figure 1 Schematic diagram of the decomposition.

[0031] Figure 3 yes Figure 1 Schematic diagram of the structure after the mounting base, mounting plate and box opening frame are hidden.

[0032] Figure 4 It is another structural schematic diagram of the lifting mechanism of the box opening device of the utility model.

[0033] Figure 5 yes Figure 4 Schematic diagram of the decomposition.

[0034] Figure 6 yes Figure 4 Schematic diagram of the structure after the mounting base, mounting plate and box opening frame are hidden.

[0035] Figure 7 It is another structural schematic diagram of the lifting mechanism of the box opening device of the utility model.

[0036] Figure 8 yes Figure 7 Schematic diagram of the decomposition.

[0037] Fig. 9 yes Figure 7 Schematic diagram of the structure after the mounting base, mounting plate and box opening frame are hidden.

[0038] Fig.10 It is a structural schematic diagram of the lifting mechanism of the box opening device of the utility model and other devices when opening a pizza box.

[0039] Description of main component symbols:

[0040] 1. Open the box frame;

[0041] 2. Mounting seat;

[0042] 3. Driving mechanism; 31. Screw rod; 32. Nut sleeve;

[0043] 4. Lifting frame; 41. Mounting plate; 42. Lifting assembly; 421. First lifting rod; 422. Second lifting rod;

[0044] 5. Guide mechanism; 51. Slider; 52. Guide rail. DETAILED DESCRIPTION

[0045] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] Example 1

[0051] See Figure 1-10 As shown, the lifting mechanism of the box opening device includes a box opening frame 1, a mounting seat 2, a driving mechanism 3 and a lifting frame 4. The box opening frame 1 is installed on the top of the lifting frame 4, and the lifting frame 4 is installed on the mounting seat 2. The output end of the driving mechanism 3 is connected to the lifting frame 4 to push the lifting frame 4 to move up and down;

[0052] The lifting frame 4 has a retracted state and an extended state. When the driving mechanism 3 drives the lifting frame 4 to descend, the lifting frame 4 is in the retracted state and the height of the lifting frame 4 becomes shorter. When the driving mechanism 3 drives the lifting frame 4 to ascend, the lifting frame 4 is in the extended state and the height of the lifting frame 4 becomes longer. The lifting frame 4 supports the box opening frame 1, so that the box opening frame 1 can always maintain a stable lifting during the lifting process, and the lifting frame 4 is evenly stressed, which can reduce the wear of the power unit.

[0053] In a further specific embodiment, the lifting frame 4 includes a mounting plate 41 and a lifting assembly 42, the bottom of the lifting assembly 42 is slidably mounted on the mounting seat 2, the mounting plate 41 is slidably mounted on the top of the lifting assembly 42, and the lifting frame 4 is mounted on the mounting plate 41. By means of sliding mounting, the lifting frame 4 can slide between the mounting seat 2 and the mounting plate 41, thereby realizing the lifting and lowering of the box opening frame 1, and at the same time, the force output by the driving mechanism 3 can be transmitted to the box opening frame 1 more evenly. As a preferred embodiment, the output end of the driving mechanism 3 of this embodiment is directly connected to the lifting assembly 42, pushing the lifting assembly 42 to slide.

[0054] In other specific embodiments, the output end of the driving mechanism 3 may also be directly connected to the mounting plate 41 to push the mounting plate 41 and thereby drive the lifting assembly 42 to slide.

[0055] In a further specific embodiment, the lifting assembly 42 includes a first lifting rod 421 and a second lifting rod 422, the first lifting rod 421 and the second lifting rod 422 are rotatably connected, and the first lifting rod 421 and the second lifting rod 422 are in an "X" shape. Through the rotatable connection, the first lifting rod 421 and the second lifting rod 422 can be relatively opened and closed, thereby realizing the lifting of the box opening frame 1, and the structure is simple.

[0056] It should be noted that the connection point between the first lifting rod 421 and the second lifting rod 422 of this embodiment is the middle position between the two. When lifting, the upper and lower ends of the lifting component 42 move the same distance.

[0057] In other specific embodiments, the positions may be other positions of the two, such as a position close to the mounting plate 41. Then, when lifting, the moving distance of the upper end of the lifting component 42 is smaller than the moving distance of the lower end.

[0058] The user can select any position to rotatably connect the first lifting rod 421 and the second lifting rod 422 according to actual needs.

[0059] As a preferred embodiment, the first end of the first lifting rod 421 of this embodiment is slidably installed on the mounting plate 41, the second end of the first lifting rod 421 is fixedly installed on the mounting seat 2, the first end of the second lifting rod 422 is slidably installed on the mounting plate 41, and the second end of the second lifting rod 422 is fixedly installed on the mounting seat 2; the top of the mounting seat 2 and the bottom of the mounting plate 41 are respectively provided with guide mechanisms 5, and the output end of the driving mechanism 3 is connected to one of the guide mechanisms 5; the first end of the first lifting rod 421 and the first end of the second lifting rod 422 are respectively rotatably installed on the guide mechanisms 5; it should be noted that the second end of the first lifting rod 421 is rotatably installed on the mounting seat 2, and the second end of the second lifting rod 422 is rotatably installed on the mounting plate 41.

[0060] In other specific embodiments, the first end of the first lifting rod 421 is fixedly mounted on the mounting plate 41, the second end of the first lifting rod 421 is slidably mounted on the mounting seat 2, the first end of the second lifting rod 422 is fixedly mounted on the mounting plate 41, and the second end of the second lifting rod 422 is slidably mounted on the mounting seat 2. The top of the mounting seat 2 and the bottom of the mounting plate 41 are respectively provided with guide mechanisms 5, and the output end of the driving mechanism 3 is connected to one of the guide mechanisms 5; the second end of the first lifting rod 421 and the second end of the second lifting rod 422 are respectively rotatably mounted on the guide mechanisms 5. It should be noted that the first end of the first lifting rod 421 is rotatably mounted on the mounting seat 2, and the first end of the second lifting rod 422 is rotatably mounted on the mounting plate 41.

[0061] Through this arrangement, one end of the first lifting rod 421 and the second lifting rod 422 are fixed on the mounting plate 41 and the mounting seat 2, and the other end of the first lifting rod 421 and the second lifting rod 422 slide on the mounting plate 41 and the mounting seat 2, thereby realizing the extension and retraction of the lifting assembly 42 and the lifting and lowering of the box opening rack 1, with a simple structure, low production cost and strong stability.

[0062] In a further specific embodiment, the guide mechanism 5 includes a slider 51 and a guide rail 52, the two guide rails 52 are respectively installed on the top of the mounting seat 2 and the bottom of the mounting plate 41, one slider 51 is slidably installed on one guide rail 52, the output end of the driving mechanism 3 is provided with a screw rod 31, the screw rod 31 is provided with a nut sleeve 32, one of the sliders 51 is connected to the nut sleeve 32, and the driving mechanism 3 is installed on the mounting seat 2 or the mounting plate 41; the screw rod 31 is driven to rotate by the driving mechanism 3, and the slider 51 moves along the screw rod 31 through the nut sleeve 32, the structure is simple, the transmission accuracy can be guaranteed, and the stability is strong. At the same time, the wear of the driving mechanism 3 caused by the driving mechanism 3 directly pushing the box opening frame 1 to rise and fall in the prior art is avoided, and no shaking occurs.

[0063] As a preferred embodiment, the first end of the first lifting rod 421 and the first end of the second lifting rod 422 of this embodiment are rotatably mounted on the two sliders 51 respectively;

[0064] In other specific embodiments, the second end of the first lifting rod 421 and the second end of the second lifting rod 422 are rotatably mounted on the slider 51 respectively.

[0065] It should be noted that the number of the lifting components 42 of the utility model is two, so the number of the first lifting rod 421 and the second lifting rod 422 of the utility model are both two, the first ends of the two first lifting rods 421 are respectively rotatably installed at the two ends of one of the sliders 51, and the first ends of the two second lifting rods 422 are respectively rotatably installed at the two ends of the other slider 51.

[0066] In other specific embodiments, the number of the lifting assembly 42 may be only one, but the thickness of the first lifting rod 421 and the second lifting rod 422 of the lifting assembly 42 needs to be increased to prevent the box opening frame 1 from shaking during lifting.

[0067] Example 2

[0068] The only difference between this embodiment and Embodiment 1 is that the first end of the first lifting rod 421 is slidably mounted on the mounting plate 41, the second end of the first lifting rod 421 is slidably mounted on the mounting seat 2, the first end of the second lifting rod 422 is slidably mounted on the mounting plate 41, and the second end of the second lifting rod 422 is slidably mounted on the mounting seat 2.

[0069] Through this arrangement, the two ends of the first lifting rod 421 and the second lifting rod 422 can slide on the mounting plate 41 and the mounting seat 2 respectively, thereby realizing the extension and retraction of the lifting assembly 42 and the lifting and lowering of the box opening frame 1, with a simple structure, low production cost and strong stability.

[0070] In a further specific embodiment, a guide mechanism 5 is respectively provided at the top of the mounting seat 2 and the bottom of the mounting plate 41, both ends of the first lifting rod 421 and both ends of the second lifting rod 422 are respectively rotatably installed on the two guide mechanisms 5, and the output end of the driving mechanism 3 is connected to one of the guide mechanisms 5.

[0071] The guide mechanism 5 is driven to move by the driving mechanism 3, thereby driving the first lifting rod 421 and the second lifting rod 422 to move toward or away from the center, thereby realizing the lifting of the box opening frame 1 and further enhancing the lifting stability.

[0072] In a further specific embodiment, the guide mechanism 5 includes a first slider, a second slider and a guide rail 52, the two guide rails 52 are respectively mounted on the top of the mounting seat 2 and the bottom of the mounting plate 41, the first slider and the second slider are slidably mounted on the guide rail 52, and a screw rod 31 is provided at the output end of the driving mechanism 3, and a first nut sleeve and a second nut sleeve are provided on the screw rod 31, wherein one of the first sliders is connected to the first nut sleeve, and one of the second sliders is connected to the second nut sleeve, and the threads in the first nut sleeve and the second nut sleeve are opposite, so that when the driving mechanism 3 drives the screw rod 31 to rotate, the first nut sleeve and the second nut sleeve move inward or outward at the same time. The driving mechanism 3 is mounted on the mounting seat 2 or the mounting plate 41. As a preferred embodiment, the driving mechanism 3 of this embodiment is mounted on the mounting seat 2, and in other specific embodiments, the driving mechanism 3 can also be mounted on the mounting plate 41.

[0073] The driving mechanism 3 drives the first nut sleeve and the second nut sleeve to close or separate toward the middle of the screw rod 31 through the screw rod 31, thereby realizing the movement of the guide mechanism 5 through the first slider and the second slider. The structure is simple, can ensure the transmission accuracy, and has strong stability.

[0074] Example 3

[0075] The self-service pizza machine includes a lifting mechanism of the box opening device. The self-service pizza machine of this embodiment includes all the technical features and technical effects of the embodiment 1, so it will not be repeated.

[0076] Descriptions such as "specific examples" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0077] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments. As long as they meet the purpose of the present invention, they should be within the scope of protection required by the present invention, such as: different combinations of specific embodiments, different combinations of distinguishing technical features.

Claims

1. A lifting mechanism of a box opening device, comprising a box opening frame (1), characterized in that: It comprises a mounting seat (2), a driving mechanism (3) and a lifting frame (4), wherein the box opening frame (1) is mounted on the top of the lifting frame (4), the lifting frame (4) is mounted on the mounting seat (2), and the output end of the driving mechanism (3) is connected to the lifting frame (4) for driving the lifting frame (4) to move up and down; The lifting frame (4) has a retracted state and an extended state. When the driving mechanism (3) drives the lifting frame (4) to descend, the lifting frame (4) is in the retracted state and the height of the lifting frame (4) becomes shorter. When the driving mechanism (3) drives the lifting frame (4) to ascend, the lifting frame (4) is in the extended state and the height of the lifting frame (4) becomes longer.

2. The lifting mechanism of the box opening device according to claim 1, characterized in that: The lifting frame (4) comprises a mounting plate (41) and a lifting assembly (42); the bottom of the lifting assembly (42) is slidably mounted on the mounting seat (2); the mounting plate (41) is slidably mounted on the top of the lifting assembly (42); and the lifting frame (4) is mounted on the mounting plate (41).

3. The lifting mechanism of the box opening device according to claim 2, characterized in that: The lifting assembly (42) comprises a first lifting rod (421) and a second lifting rod (422), wherein the first lifting rod (421) and the second lifting rod (422) are rotatably connected, and the first lifting rod (421) and the second lifting rod (422) are in an "X" shape.

4. The lifting mechanism of the box opening device according to claim 3, characterized in that: The first end of the first lifting rod (421) is slidably mounted on the mounting plate (41), the second end of the first lifting rod (421) is fixedly mounted on the mounting seat (2), the first end of the second lifting rod (422) is slidably mounted on the mounting plate (41), and the second end of the second lifting rod (422) is fixedly mounted on the mounting seat (2); or The first end of the first lifting rod (421) is fixedly mounted on the mounting plate (41), and the first end of the first lifting rod (421) is slidably mounted on the mounting seat (2); the first end of the second lifting rod (422) is fixedly mounted on the mounting plate (41), and the second end of the second lifting rod (422) is slidably mounted on the mounting seat (2).

5. The lifting mechanism of the box opening device according to claim 4, characterized in that: The top of the mounting seat (2) and the bottom of the mounting plate (41) are respectively provided with guide mechanisms (5), and the output end of the driving mechanism (3) is connected to one of the guide mechanisms (5); The first end of the first lifting rod (421) and the first end of the second lifting rod (422) are respectively rotatably mounted on the guide mechanism (5); or The second end of the first lifting rod (421) and the second end of the second lifting rod (422) are respectively rotatably mounted on the guide mechanism (5).

6. The lifting mechanism of the box opening device according to claim 5, characterized in that: The guide mechanism (5) comprises a slider (51) and a guide rail (52), the two guide rails (52) being respectively mounted on the top of the mounting seat (2) and the bottom of the mounting plate (41), one slider (51) being slidably mounted on one guide rail (52), a screw rod (31) being provided at the output end of the drive mechanism (3), a nut sleeve (32) being provided on the screw rod (31), wherein one slider (51) is connected to the nut sleeve (32), and the drive mechanism (3) is mounted on the mounting seat (2) or the mounting plate (41); The first end of the first lifting rod (421) and the first end of the second lifting rod (422) are respectively rotatably mounted on a slider (51); or The second end of the first lifting rod (421) and the second end of the second lifting rod (422) are respectively rotatably mounted on a slider (51).

7. The lifting mechanism of the box opening device according to claim 3, characterized in that: The first end of the first lifting rod (421) is slidably mounted on the mounting plate (41), the second end of the first lifting rod (421) is slidably mounted on the mounting seat (2), the first end of the second lifting rod (422) is slidably mounted on the mounting plate (41), and the second end of the second lifting rod (422) is slidably mounted on the mounting seat (2).

8. The lifting mechanism of the box opening device according to claim 7, characterized in that: A guide mechanism (5) is provided at the top of the mounting seat (2) and the bottom of the mounting plate (41), respectively; two ends of the first lifting rod (421) and two ends of the second lifting rod (422) are rotatably mounted on the two guide mechanisms (5), respectively; and an output end of the driving mechanism (3) is connected to one of the guide mechanisms (5).

9. The lifting mechanism of the box opening device according to claim 8, characterized in that: The guide mechanism (5) comprises a first slider, a second slider and a guide rail (52), the two guide rails (52) being respectively mounted on the top of the mounting seat (2) and the bottom of the mounting plate (41), the first slider and the second slider being slidably mounted on the guide rails (52), the output end of the drive mechanism (3) being provided with a screw rod (31), the screw rod (31) being provided with a first nut sleeve and a second nut sleeve, wherein one of the first sliders is connected to the first nut sleeve, and one of the second sliders is connected to the second nut sleeve, the screw threads in the first nut sleeve and the second nut sleeve are opposite, and the drive mechanism (3) is mounted on the mounting seat (2) or the mounting plate (41).

10. Self-service pizza machine, characterized by A lifting mechanism comprising the box opening device according to any one of claims 1 to 9.

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