Loading platform jig mechanism of buckling machine

Abstract

A loading platform jig mechanism of a buckling machine comprises a working platform. The loading platform jig mechanism comprises a bottom plate part arranged on the working platform, a mold core part which is arranged on the bottom plate part and is used for positioning and arranging the automobile decorating part on the loading platform jig mechanism, and a limiting structure which is arranged on the bottom plate part and is used for limiting and arranging the automobile decorating part on the mold core part. The utility model provides a loading platform jig mechanism of a buckling machine. The loading platform jig mechanism of the buckling machine can enable automobile decorating parts to be rapidly and fixedly installed on the buckling machine.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile accessory buckle machines, and in particular relates to a loading platform jig mechanism of the buckle machine. Background Art

[0002] The decorative parts of the cars sold on the market, such as interior trims and coverings, are all made of plastic materials. The connection between the decorative parts and between the decorative parts and the car body is generally achieved by using clips. Specifically, one end of the clip is fixed to the decorative part, and the other end is inserted into the clip hole of the interior trim or the clip hole of the car body, so that the decorative part can be installed at the corresponding position of the car.

[0003] When decorative parts are installed on the car body, the buckles need to be installed on the decorative parts in advance. There are generally multiple buckles on the decorative parts. In order to improve the installation efficiency of the buckles, manufacturers generally use buckle machines to install the buckles on the decorative parts. The working principle of the buckle machine is as follows: first, the decorative parts are fixed on the working platform of the buckle machine, and several buckles are placed in the buckle preparation cabin. Then, the buckle preparation cabin arranges the buckles and transports them to the direction of the buckle conveying mechanism. Then, the buckle conveying mechanism transports the buckles to the material picking end of the manipulator. Then, the manipulator takes out the buckles from the buckle conveying mechanism and installs the buckles on the decorative parts. Finally, the decorative parts are unloaded from the working platform of the buckle machine.

[0004] Therefore, in order to enable the decorative parts to be quickly fixed on the working platform of the snap-on machine, it is necessary to design a corresponding loading platform jig mechanism. Utility Model Content

[0005] The utility model aims to provide a loading platform jig mechanism of a snap-fit ​​machine, which can enable automobile decorative parts to be quickly fixed on the snap-fit ​​machine.

[0006] In order to achieve the above-mentioned purpose, the technical solution provided by the embodiment of the utility model is:

[0007] A loading platform jig mechanism of a snap-on machine comprises a working platform, wherein the loading platform jig mechanism comprises a bottom plate component arranged on the working platform, a core component arranged on the bottom plate component and used for positioning an automobile decorative part on the loading platform jig mechanism, and a limiting structure arranged on the bottom plate component and used for limiting the automobile decorative part on the core component.

[0008] The core component includes a placing portion for placing the automobile decorative part on the core component, a first positioning portion arranged at one end of the placing portion and positioned on one end of the automobile decorative part, and a second positioning portion arranged at the other end of the placing portion and positioned on the other end of the automobile decorative part. The placing portion, the first positioning portion, and the second positioning portion are all arranged on the top surface of the core component, and the horizontal projection shape of the placing portion matches the vertical cross-sectional shape of the automobile decorative part.

[0009] The core component also includes a positioning block which is arranged on the left and / or right side of the placement portion and acts on the side of the automobile decorative part. The positioning block is detachably arranged on the core component. A gap is left between the positioning block and the placement portion, and the width of the gap is equivalent to the thickness of the side wall of the automobile decorative part.

[0010] The limiting structure includes a pressing block for pressing the automobile decorative part onto the core component, and a driving component for driving the pressing block to press or release the automobile decorative part. The fixed end of the driving component is arranged on the bottom plate component, and the pressing block is arranged on the movable end of the driving component.

[0011] A quick release device is provided between the core component and the bottom plate component so that the core component can be detachably arranged on the bottom plate component. A first fixing plate is provided on the core component, and a second fixing plate is provided on the bottom plate component. The quick release device is arranged between the first fixing plate and the second fixing plate.

[0012] The quick-release device includes a first connecting end arranged on a first fixed plate, a second connecting end arranged on a second fixed plate, and a locking component movably arranged on the first connecting end or the second connecting end, a locking column is arranged on the first connecting end or the second connecting end, and a locking groove matching with the locking column is arranged on the locking component, and the locking column is inserted into or pulled out of the locking groove, so that the first connecting end and the second connecting end are locked with each other or separated from each other.

[0013] The quick-release device also includes an air path coupling structure, the first connecting end is provided with a first air inlet and a first air outlet, the second connecting end is provided with a second air inlet and a second air outlet, the air path coupling structure includes a coupling connection hole arranged on the first air inlet, and a coupling connection column arranged on the second air outlet, the first connecting end and the second connecting end are connected to each other, and the coupling connection column is inserted into the coupling connection hole, so that the air passage of the core component is connected with the air passage of the bottom plate component.

[0014] A positioning structure is also provided between the core component and the base plate component to enable the core component to be quickly positioned on the base plate component, and the positioning structure includes a positioning sleeve arranged on one of the first fixed plate and the second fixed plate, and a positioning column arranged on the other of the first fixed plate and the second fixed plate. The number of the positioning sleeves is several groups and they are evenly arranged on the bottom surface of the first fixed plate, and the number of the positioning columns corresponds to the number of the positioning sleeves, which are evenly arranged on the top surface of the second fixed plate.

[0015] A buffer component is also provided between the core component and the bottom plate component. The buffer component is arranged on the first fixing plate and / or the second fixing plate and is located between the first fixing plate and the second fixing plate.

[0016] The loading platform jig mechanism also includes a movable structure to enable the loading platform jig mechanism to be movably arranged on the working platform, the movable structure includes a movable plate, a first sliding device for moving the loading platform jig mechanism along the front-rear direction of the working platform, and a second sliding device for moving the loading platform jig mechanism along the left-right direction of the working platform, the first sliding device is arranged between the working platform and the movable plate, and the second sliding device is arranged between the movable plate and the bottom plate component;

[0017] A first guide structure is provided between the working platform and the movable plate to guide the movable plate to move along the front-rear direction of the working platform, the first guide structure includes a first slide rail provided on one of the working platform and the movable plate, and a first slider provided on the other of the working platform and the movable plate, the first slide rail extends along the front-rear direction of the working platform, the first slider is provided on the first slide rail and slides back and forth along the length direction of the first slide rail;

[0018] A second guide structure is provided between the movable plate and the bottom plate component to guide the bottom plate component to move along the left-right direction of the movable plate, the second guide structure includes a second slide rail provided on one of the movable plate and the bottom plate component, and a second slider provided on the other of the movable plate and the bottom plate component, the second slide rail extends along the left-right direction of the movable plate, the second slider is provided on the second slide rail and slides back and forth along the length direction of the second slide rail.

[0019] The beneficial effects of the utility model are as follows:

[0020] The utility model adopts the loading platform fixture mechanism of the buckle machine of the technical solution, which can enable the automobile decorative parts to be quickly fixed on the buckle machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a snap-fit ​​machine according to an embodiment of the utility model.

[0022] Figure 2It is a structural schematic diagram of a loading platform jig mechanism according to an embodiment of the utility model.

[0023] Figure 3 This is an exploded view of a loading platform jig mechanism according to an embodiment of the utility model.

[0024] Figure 4 This is an exploded view of a loading platform jig mechanism according to an embodiment of the utility model.

[0025] Figure 5 It is a structural schematic diagram of a core component of an embodiment of the utility model.

[0026] Figure 6 It is a structural schematic diagram of a limiting structure of an embodiment of the utility model.

[0027] Figure 7 This is an exploded view of a quick-release device according to an embodiment of the present invention.

[0028] Figure 8 This is an exploded view of a quick-release device according to an embodiment of the present invention.

[0029] Fig. 9 It is a schematic diagram of a jig mechanism of an automobile decoration component not placed on a loading platform according to an embodiment of the utility model.

[0030] Fig.10 It is a schematic diagram of a jig mechanism for placing an automobile decorative part on a loading platform according to an embodiment of the utility model. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0032] See also Figure 1-10The loading platform fixture mechanism of the snap-fit ​​machine comprises a working platform 1 arranged on the snap-fit ​​machine, the loading platform fixture mechanism comprises a bottom plate component 2, a core component 4, and a limiting structure 5, a first fixing plate 405 is provided on the core component 4, a second fixing plate 202 is provided on the bottom plate component 2, the core component 4 is fastened to the first fixing plate 405, the second fixing plate 202 is installed on the working platform 1, the first fixing plate 405 and the second fixing plate 202 are combined with each other to realize that the loading platform fixture mechanism is installed on the snap-fit ​​machine, in this embodiment, the number of the core components 4 is preferably four groups and along the bottom plate component 2 are arranged in intervals in the left and right directions, each group of core components 4 includes a placing portion 401, a first positioning portion 402, and a second positioning portion 403. The placing portion 401 is arranged on the top surface of the core component 4 and is used to place the automobile decorative part 3 on the core component 4. The first positioning portion 402 is arranged on the top surface of the core component 4 and is located at the front end of the placing portion 401 and is positioned to act on the front end of the automobile decorative part 3. The second positioning portion 403 is arranged on the top surface of the core component 4 and is located at the rear end of the placing portion 401 and is positioned to act on the rear end of the automobile decorative part 3. The horizontal projection shape of the placing portion 401 is consistent with the automobile decorative part 3. The vertical cross-sectional shape of the mold core component 3 is matched, and the limiting structure 5 is fixedly mounted on the first fixed plate 405, which includes a clamping block 501 and a driving component 502. In this embodiment, each group of core components 4 is equipped with two groups of clamping blocks 501 and two groups of driving components 502. The two groups of clamping blocks 501 and the two groups of driving components 502 are arranged at intervals along the length direction of the core component 4. The driving component 502 is preferably a driving cylinder, and its fixed end is fastened and mounted on the first fixed plate 405 by a fastener. The clamping block 501 is installed at the movable end of the driving component 502 and is located above the core component 4. The decorative part 3 is placed from top to bottom on the placing part 401 of the core component 4, the first positioning part 402 and the second positioning part 403 respectively position the automobile decorative part 3, and the driving part 502 drives the clamping block 501 to rotate clockwise and move downward, so that the clamping plate and the core component 4 interact with each other to fix the automobile decorative part 3 on the loading platform jig mechanism. When the driving part 502 drives the clamping block 501 to move upward and rotate counterclockwise, the clamping plate and the core component 4 are separated from each other, so that the automobile decorative part 3 can be removed from the loading platform jig mechanism, so that the automobile decorative part 3 can be quickly fixed on the snap-on machine.

[0033] Furthermore, the core component 4 also includes a positioning block 404. Specifically, in the present embodiment, the number of the positioning blocks 404 is preferably two groups and they are arranged at intervals along the length direction of the core component 4. They are detachably mounted on the core component 4 through fasteners and are located on the right side of the placement portion 401. A gap is left between the positioning block 404 and the placement portion 401. The width of the gap is comparable to the thickness of the side wall of the automobile decorative part 3, so that the side wall of the automobile decorative part 3 can be inserted into the gap. Through the above technical solution, the positioning block 404 can position the side of the automobile decorative part 3, further positioning the automobile decorative part 3 and installing it on the core component 4, which can be understood by those skilled in the art.

[0034] Furthermore, a quick-release device is provided between the core component 4 and the bottom plate component 2, and the quick-release device is arranged between the first fixed plate 405 and the second fixed plate 202. Specifically, in the present embodiment, the quick-release device includes a first connecting end 406, a second connecting end 204, and a locking component 6. The first connecting end 406 is fixedly mounted on the bottom surface of the first fixed plate 405, and the second connecting end 204 is fixedly mounted on the top surface of the second fixed plate 202. The locking component 6 is horizontally rotatably installed on the second connecting end 204. A locking column 4061 is provided on the first connecting end 406. The number of the locking columns 4061 is preferably three groups and are arranged in an annular interval on the bottom surface of the first connecting end 406. A locking groove 61 cooperating with the locking column 4061 is provided on the locking component 6. The number of the locking groove 61 corresponds to the number of the locking columns 4061, which is preferably three groups. When the locking column 4061 is inserted into The first connection end 406 and the second connection end 204 are locked with each other in the locking groove 61, so that the core component 4 and the limiting structure 5 are installed on the bottom plate component 2. When the locking column 4061 is separated from the locking groove 61 and pulled out from the locking groove 61, the first connection end 406 and the second connection end 204 are separated from each other, so that the core component 4 and the limiting structure 5 are removed from the bottom plate component 2. Through the above technical solution, the core component 4 and the limiting structure 5 can be quickly assembled and disassembled from the bottom plate component 2, and the efficiency of replacing the core component 4 and the limiting structure 5 is improved. The loading platform jig mechanism can replace different core components 4 and the limiting structure 5, and can install buckles on different automotive accessories, thereby improving the versatility of the loading platform jig mechanism and reducing the R&D cost of the enterprise. Those skilled in the art can understand it.

[0035] Further, the quick-release device also includes an air path coupling structure, the first connecting end 406 is provided with a first air inlet 4062 and a first air outlet 4063, and the second connecting end 204 is provided with a second air inlet 2041 and a second air outlet 2042. Specifically, in this embodiment, the number of the first air inlets 4062 is eight groups and is arranged in a circumferential direction on the bottom surface of the first connecting end 406 and is used to connect to an external air source, the number of the first air outlets 4063 is eight groups and is arranged in a circumferential direction on the outer peripheral wall of the first connecting end 406, the number of the second air inlets 2041 is eight groups and is arranged in a circumferential direction on the outer peripheral wall of the second connecting end 204, the number of the second air outlets 2042 is eight groups and is arranged in a circumferential direction on the top surface of the second connecting end 204 and is used to connect to the driving component 502, and the air path coupling structure is provided. The combined structure includes a coupling connection hole 4064 arranged on the first air inlet 4062, and a coupling connection column 2043 arranged on the second air outlet 2042. When the first connection end 406 and the second connection end 204 are connected to each other, the coupling connection column 2043 is inserted into the coupling connection hole 4064. When the first air outlet 4063 is connected to the second air inlet 2041, the air passage of the core component 4 is connected to the air passage of the bottom plate component 2. When the first connection end 406 and the second connection end 204 are separated from each other, the coupling connection column 2043 is pulled out of the coupling connection hole 4064, the first air outlet 4063 is disconnected from the second air inlet 2041, and the air passage of the core component 4 is disconnected from the air passage of the bottom plate component 2. Persons skilled in the art can understand this.

[0036] Furthermore, a positioning structure is also provided between the core component 4 and the bottom plate component 2. Specifically, in the present embodiment, the positioning structure includes a positioning sleeve 4051 provided on the first fixed plate 405, and a positioning column 2021 provided on the second fixed plate 202. The number of the positioning sleeves 4051 is preferably four groups and they are evenly arranged on the bottom surface of the first fixed plate 405. The number of the positioning columns 2021 corresponds to the number of the positioning sleeves 4051, which are preferably four groups and are evenly arranged on the top surface of the second fixed plate 202. The positioning sleeves 4051 are provided with positioning holes for cooperating with the positioning columns 2021. When the first fixed plate 405 and the second fixed plate 202 are connected to each other and the positioning columns 2021 are inserted into the positioning holes of the positioning sleeves 4051, the first fixed plate 405 is positioned on the second fixed plate 202. Through the above technical scheme, the first fixed plate 405 can be quickly positioned and installed on the second fixed plate 202, which can be understood by those skilled in the art.

[0037] Furthermore, a buffer component 7 is also provided between the core component 4 and the bottom plate component 2. Specifically, in the present embodiment, the buffer component 7 is preferably made of rubber material or silicone material and is provided on the bottom surface of the first fixed plate 405 and is located between the first fixed plate 405 and the second fixed plate 202. When the first fixed plate 405 and the second fixed plate 202 are connected to each other, the buffer component 7 can offset the collision force when the positioning structure and the quick release device contact each other, thereby improving the service life of the positioning structure and the quick release device to a certain extent, which can be understood by those skilled in the art.

[0038] Furthermore, the loading platform jig mechanism also includes a movable structure. Specifically, in this embodiment, the movable structure includes a movable plate 601, a first sliding device 602, and a second sliding device 603. The movable plate 601 is arranged between the bottom plate component 2 and the working platform 1. The first sliding device 602 includes a first ball screw and a first motor driving the first ball screw. The first sliding device 602 is arranged between the working platform 1 and the movable plate 601. The fixed end of the first ball screw is arranged on the top surface of the working platform 1, and the movable end of the first ball screw is arranged on the bottom surface of the movable plate 601. When the first motor drives the first ball screw, the movable end of the first ball screw moves relative to its fixed end, so that the loading The platform jig mechanism moves along the front and rear direction of the working platform 1, the second sliding device 603 includes a second ball screw and a second motor driving the second ball screw, the second sliding device 603 is arranged between the movable plate 601 and the bottom plate part 2, the fixed end of the second ball screw is arranged on the top surface of the movable plate 601, and the movable end of the second ball screw is arranged on the bottom surface of the second fixed plate 202 of the bottom plate part 2. When the second motor drives the second ball screw and the movable end of the second ball screw moves relative to its fixed end, the loading platform jig mechanism moves along the left and right direction of the working platform 1. Through the above technical solution, the loading platform jig mechanism can be slidably installed on the working platform 1, which can be understood by those skilled in the art.

[0039] A first guide structure is provided between the working platform 1 and the movable plate 601. Specifically, in the present embodiment, the first guide structure includes a first slide rail 101 provided on the working platform 1, and a first slider 6011 provided on the movable plate 601. The first slide rail 101 is extended along the front-to-back direction of the working platform 1. The number of the first slide rails 101 is two groups and they are spaced apart along the left-to-right direction of the working platform 1. The first slider 6011 corresponds to the number of the first slide rails 101 in two groups and slides on the first slide rail 101. When the first slider 6011 slides back and forth along the length direction of the first slide rail 101, the movable plate 601 is guided to move along the front-to-back direction of the working platform 1. Through the above technical scheme, the loading platform jig mechanism is guided to move along the front-to-back direction of the working platform 1, which can be understood by those skilled in the art.

[0040] A second guide structure is provided between the movable plate 601 and the bottom plate component 2. Specifically, in the present embodiment, the second guide structure includes a second slide rail 6012 provided on the movable plate 601, and a second slider 206 provided on the bottom plate component 2. The second slide rail 6012 is extended along the left-right direction of the movable plate 601. The number of the second slide rails 6012 is two groups and they are spaced apart in the front-to-back direction of the movable plate 601. The second slider 206 corresponds to the number of the second slide rails 6012 in two groups and slides on the second slide rail 6012. When the second slider 206 slides back and forth along the length direction of the second slide rail 6012, the bottom plate component 2 is guided to move along the left-right direction of the movable plate 601. Through the above technical scheme, the loading platform jig mechanism is guided to move along the left-right direction of the working platform 1, which can be understood by those skilled in the art.

[0041] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A loading platform jig mechanism of a snap-fit ​​machine, comprising a working platform (1), characterized in that: The loading platform jig mechanism comprises a bottom plate component (2) arranged on a working platform (1), a core component (4) arranged on the bottom plate component (2) and used for positioning an automobile decorative component (3) on the loading platform jig mechanism, and a limiting structure (5) arranged on the bottom plate component (2) and used for limiting the position of the automobile decorative component (3) on the core component (4).

2. The loading platform fixture mechanism of the snap-fit ​​machine according to claim 1, characterized in that: The core component (4) comprises a placement portion (401) for placing the automobile decorative part (3) on the core component (4), a first positioning portion (402) arranged at one end of the placement portion (401) and positioned on one end of the automobile decorative part (3), and a second positioning portion (403) arranged at the other end of the placement portion (401) and positioned on the other end of the automobile decorative part (3); the placement portion (401), the first positioning portion (402), and the second positioning portion (403) are all arranged on the top surface of the core component (4); and the horizontal projection shape of the placement portion (401) matches the vertical cross-sectional shape of the automobile decorative part (3).

3. The loading platform jig mechanism of the snap-fit ​​machine according to claim 2, characterized in that: The core component (4) further comprises a positioning block (404) arranged on the left side and / or right side of the placement portion (401) and acting on the side of the automobile decorative component (3); the positioning block (404) is detachably arranged on the core component (4); a gap is left between the positioning block (404) and the placement portion (401); the width of the gap is equivalent to the thickness of the side wall of the automobile decorative component (3).

4. The loading platform fixture mechanism of the snap-fit ​​machine according to claim 1, characterized in that: The limiting structure (5) comprises a pressing block (501) for pressing the automobile decorative part (3) onto the mold core part (4), and a driving part (502) for driving the pressing block (501) to press or release the automobile decorative part (3), wherein the fixed end of the driving part (502) is arranged on the bottom plate part (2), and the pressing block (501) is arranged on the movable end of the driving part (502).

5. The loading platform fixture mechanism of the snap-fit ​​machine according to claim 1, characterized in that: A quick-release device is provided between the core component (4) and the bottom plate component (2) so that the core component (4) can be detachably arranged on the bottom plate component (2); a first fixing plate (405) is provided on the core component (4), and a second fixing plate (202) is provided on the bottom plate component (2); and the quick-release device is arranged between the first fixing plate (405) and the second fixing plate (202).

6. The loading platform jig mechanism of the snap-fit ​​machine according to claim 5, characterized in that: The quick-release device comprises a first connecting end (406) arranged on a first fixing plate (405), a second connecting end (204) arranged on a second fixing plate (202), and a locking component (6) movably arranged on the first connecting end (406) or the second connecting end (204), wherein a locking column (4061) is arranged on the first connecting end (406) or the second connecting end (204), and a locking groove (61) matched with the locking column (4061) is arranged on the locking component (6), and the locking column (4061) is inserted into the locking groove (61) or pulled out from the locking groove (61), so that the first connecting end (406) and the second connecting end (204) are locked with each other or separated from each other.

7. The loading platform fixture mechanism of the snap-fit ​​machine according to claim 6, characterized in that: The quick-release device also includes an air path coupling structure, wherein the first connection end (406) is provided with a first air inlet (4062) and a first air outlet (4063), and the second connection end (204) is provided with a second air inlet (2041) and a second air outlet (2042). The air path coupling structure includes a coupling connection hole (4064) provided on the first air inlet (4062), and a coupling connection column (2043) provided on the second air outlet (2042). The first connection end (406) and the second connection end (204) are connected to each other, and the coupling connection column (2043) is inserted into the coupling connection hole (4064) so ​​that the air path of the core component (4) is connected to the air path of the bottom plate component (2).

8. The loading platform jig mechanism of the snap-fit ​​machine according to claim 5, characterized in that: A positioning structure is also provided between the core component (4) and the bottom plate component (2) so that the core component (4) can be quickly positioned on the bottom plate component (2), the positioning structure comprising a positioning sleeve (4051) provided on one of the first fixed plate (405) and the second fixed plate (202), and a positioning column (2021) provided on the other of the first fixed plate (405) and the second fixed plate (202), the positioning sleeves (4051) being provided in a plurality of groups and being evenly arranged on the bottom surface of the first fixed plate (405), and the positioning columns (2021) being provided in a plurality of groups corresponding to the positioning sleeves (4051) and being evenly arranged on the top surface of the second fixed plate (202).

9. The loading platform jig mechanism of the snap-fit ​​machine according to claim 5, characterized in that: A buffer component (7) is also provided between the core component (4) and the bottom plate component (2); the buffer component (7) is arranged on the first fixed plate (405) and / or the second fixed plate (202) and is located between the first fixed plate (405) and the second fixed plate (202).

10. The loading platform jig mechanism of the snap-fit ​​machine according to claim 1, characterized in that: The loading platform jig mechanism also includes a movable structure for enabling the loading platform jig mechanism to be movably arranged on the working platform (1), the movable structure comprising a movable plate (601), a first sliding device (602) for enabling the loading platform jig mechanism to move along the front-rear direction of the working platform (1), and a second sliding device (603) for enabling the loading platform jig mechanism to move along the left-right direction of the working platform (1), the first sliding device (602) being arranged between the working platform (1) and the movable plate (601), and the second sliding device (603) being arranged between the movable plate (601) and the bottom plate component (2); A first guide structure is provided between the working platform (1) and the movable plate (601) to guide the movable plate (601) to move along the front-rear direction of the working platform (1), the first guide structure comprising a first slide rail (101) provided on one of the working platform (1) and the movable plate (601), and a first slider (6011) provided on the other of the working platform (1) and the movable plate (601), the first slide rail (101) extending along the front-rear direction of the working platform (1), the first slider (6011) provided on the first slide rail (101) and sliding back and forth along the length direction of the first slide rail (101); A second guide structure is provided between the movable plate (601) and the bottom plate component (2) to guide the bottom plate component (2) to move along the left-right direction of the movable plate (601), the second guide structure comprising a second slide rail (6012) provided on one of the movable plate (601) and the bottom plate component (2), and a second slider (206) provided on the other of the movable plate (601) and the bottom plate component (2), the second slide rail (6012) extending along the left-right direction of the movable plate (601), the second slider (206) provided on the second slide rail (6012) and sliding back and forth along the length direction of the second slide rail (6012).

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