Auxiliary positioning tool for refrigerator handle processing
Patent Information
- Application Number
- CN202521951627.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-10
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-09-10
AI Technical Summary
Existing refrigerator handle positioning fixtures can only fix a single handle at a time, and the installation and disassembly are time-consuming, making it difficult to meet the needs of efficient continuous production. In addition, they are not adaptable to handles of different specifications and sizes, and cannot quickly adapt to diverse production requirements.
An auxiliary positioning fixture was designed, comprising a base, a bracket, a movable plate, a locking component, and a top limiting component. Multiple workpieces can be clamped simultaneously through multiple storage slots. The movable plate and elastic element are used to achieve quick clamping and disassembly. Combined with the locking component and the side limiting component, the workpiece is stably constrained and accurately positioned.
It enables simultaneous clamping of multiple workpieces, reduces auxiliary time for single-piece clamping, improves production efficiency, ensures machining accuracy and stability, adapts to handles of different specifications and sizes, and meets the needs of efficient continuous production.
Smart Images
Figure CN224927755U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of refrigerator handle processing technology, and more specifically, to an auxiliary positioning tooling for refrigerator handle processing. Background Technology
[0002] Refrigerator handles require processing steps such as drilling during production. Currently, common positioning fixtures can only fix a single handle at a time, which takes a lot of time in the installation and disassembly process, making it difficult to meet the needs of efficient continuous production and restricting the improvement of overall work efficiency. In addition, existing positioning fixtures have poor adaptability to handles of different specifications and sizes, and cannot quickly adapt to diverse production requirements. Summary of the Invention
[0003] The purpose of this application is to provide an auxiliary positioning fixture for processing refrigerator handles. It can solve the problem that the current common positioning fixtures can only fix a single handle at a time, and the installation and disassembly process is time-consuming, which makes it difficult to meet the needs of efficient continuous production and restricts the improvement of overall work efficiency. In addition, the existing positioning fixtures have poor adaptability to handles of different specifications and sizes and cannot quickly adapt to diverse production requirements.
[0004] This application provides an auxiliary positioning fixture for processing refrigerator handles, including a base, a bracket, a movable plate, a locking component, and a top limiting component. The top of the base has multiple storage slots for accommodating the handle. The bracket is fixedly disposed at the upper end of the base. The movable plate is located inside the bracket, and a first elastic element is pre-pressed between the movable plate and the bracket. The locking component is disposed on the side of the bracket and is used to lock and fix the movable plate. The top limiting component is disposed at the bottom of the movable plate and is used to limit and fix the top of the handle.
[0005] The inner walls on both sides of the bracket are provided with sliding grooves, and the two ends of the movable plate are respectively limited and slidably connected to the corresponding sliding grooves. When the movable plate is located at the bottom of the sliding groove, the locking component can lock and fix the movable plate.
[0006] The locking assembly includes a locking rod, a mounting plate, a second elastic element, and a first handle. The movable plate has a locking groove on its side. The locking rod slides through the side of the bracket. One end of the locking rod can extend into the groove and can be inserted into the locking groove and engaged with it. The other end of the locking rod is fixedly connected to the first handle. The mounting plate is fixedly sleeved on the locking rod. The second elastic element is pre-pressed between the mounting plate and the outer wall of the bracket.
[0007] The upper end of the movable plate is fixedly provided with a connecting rod, which slides through the top of the bracket, and a second handle is fixedly provided at the end of the connecting rod away from the movable plate.
[0008] The top limiting assembly includes a limiting plate, a first screw, a third handle, and a first sliding rod. The limiting plate is located below the movable plate. The first screw is threaded through the movable plate. One end of the first screw is rotatably connected to the limiting plate via a bearing, and the other end of the first screw is fixedly connected to the third handle. The first sliding rod slides through the movable plate and is fixedly connected to the limiting plate.
[0009] The bottom of the limiting plate is provided with an arc-shaped groove, which corresponds to the storage groove.
[0010] The storage slot is provided with side limiting components on both sides, which are used to limit and fix the sides of the handle.
[0011] The side limiting assembly includes a limiting block, a connecting block, a connecting plate, a second screw, a fourth handle, and a second slide rod. The bottom of the base has an installation groove, and a connecting groove connects the storage groove and the installation groove. The limiting block is slidably disposed within the storage groove. The connecting plate is located within the installation groove, and the connecting block passes through the connecting groove. One end of the connecting block is fixedly connected to the limiting block, and the other end is fixedly connected to the connecting plate. The second screw is rotatably disposed within the installation groove via a bearing, and one end of the second screw extends outside the base and is fixedly connected to the fourth handle. The second slide rod is fixedly disposed within the installation groove. The connecting plate is threaded onto the second screw, and the connecting plate is slidably disposed onto the second slide rod.
[0012] The beneficial effects of this utility model are:
[0013] This utility model provides an auxiliary positioning fixture for processing refrigerator handles. This fixture can achieve simultaneous clamping of multiple workpieces. Multiple storage slots allow for the simultaneous placement and fixing of multiple handles, reducing the auxiliary time for single-piece clamping and effectively improving production efficiency. The fixture, through the setting of a movable plate in conjunction with a first elastic element, achieves buffering when pressing down and automatic rebound when releasing. Combined with the locking component, it makes the clamping and disassembly of the handles very quick. The fixture limits the bottom of the handle through the storage slots and presses the top of the handle with the top limiting component, forming a stable constraint on the workpiece, effectively preventing workpiece displacement or vibration during processing and ensuring processing accuracy. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0015] Fig. 1 This is a schematic diagram of the overall top view structure in some embodiments of this application;
[0016] Fig. 2 This is a sectional view of the overall main view structure in some embodiments of this application;
[0017] Fig. 3 This is a schematic diagram of the overall bottom view structure in some embodiments of this application.
[0018] The reference numerals in the attached figures are as follows:
[0019] 1. Base; 11. Storage slot; 12. Mounting slot; 13. Connecting slot;
[0020] 2. Bracket; 21. First elastic element; 22. Slide groove;
[0021] 3. Movable plate; 31. Locking slot; 32. Connecting rod; 33. Second handle;
[0022] 4. Locking assembly; 41. Locking lever; 42. Mounting plate; 43. Second elastic element; 44. First handle;
[0023] 5. Top limiting assembly; 51. Limiting plate; 52. First screw; 53. Third handle; 54. First sliding rod; 55. Arc groove;
[0024] 6. Side limiting assembly; 61. Limiting block; 62. Connecting block; 63. Connecting plate; 64. Second screw; 65. Fourth handle; 66. Second slide bar. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0028] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0029] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0030] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0031] It should be noted that all electrical components appearing in this application are connected to an external main controller and mains power. The main controller can be a conventional known device such as a computer for control. All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as bolts, rivets and welding that are mature in the prior art. Furthermore, the machinery, parts and equipment are all conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art. These are prior art known to those skilled in the art and will not be described in detail here.
[0032] like Figs. 1 to 3 As shown in the figure, this application provides an auxiliary positioning fixture for processing refrigerator handles, including a base 1, a bracket 2, a movable plate 3, a locking component 4, and a top limiting component 5. The top of the base 1 is provided with a plurality of storage slots 11 for accommodating the handle. The bracket 2 is fixedly disposed on the upper end of the base 1. The movable plate 3 is located inside the bracket 2, and a first elastic member 21 is pre-pressed between the movable plate 3 and the bracket 2. The locking component 4 is disposed on the side of the bracket 2 and is used to lock and fix the movable plate 3. The top limiting component 5 is disposed on the bottom of the movable plate 3 and is used to limit and fix the top of the handle.
[0033] In use, multiple handles are first placed in the multiple storage slots 11 on the top of the base 1. Then, the operator presses down the movable plate 3. The movable plate 3 moves downward against the pre-pressure of the first elastic element 21, causing the top limiting component 5 at the bottom of the movable plate 3 to press against the top of the handle. When the movable plate 3 moves to the appropriate position, the position of the movable plate 3 is locked and fixed by the locking component 4 on the side of the bracket 2. Then, the top of the handle is fixed by the top limiting component 5, thereby achieving stable vertical pressing and fixing of multiple handles at the same time, so as to carry out subsequent processing operations such as drilling. After the current batch of handles is processed, the locking component 4 is released from fixing the movable plate 3. At this time, under the elastic force of the first elastic element 21, the movable plate 3 automatically moves upward to reset, making enough clearance space for the operator to load and unload the handles.
[0034] This fixture enables simultaneous clamping of multiple workpieces. Multiple storage slots 11 allow for the simultaneous placement and fixing of multiple handles, reducing the auxiliary time for single-piece clamping and effectively improving production efficiency. The fixture, through the setting of the movable plate 3 in conjunction with the first elastic element 21, achieves buffering when pressing down and automatic rebound when releasing. Combined with the locking component 4, it makes the clamping and disassembly of the handles very quick. The fixture limits the bottom of the handle through the storage slot 11 and presses the top of the handle through the top limiting component 5, forming a stable constraint on the workpiece, effectively preventing workpiece displacement or vibration during processing and ensuring processing accuracy. The first elastic element 21 is a spring.
[0035] like Figs. 1 to 3As shown, in this embodiment, the inner walls on both sides of the bracket 2 are provided with sliding grooves 22, and the two ends of the movable plate 3 are respectively limited and slidably connected to the corresponding sliding grooves 22. When the movable plate 3 is located at the bottom of the sliding groove 22, the locking component 4 can lock and fix the movable plate 3.
[0036] During use, the two ends of the movable plate 3 are respectively limited in the slide grooves 22 on both sides inside the bracket 2, and can only slide precisely vertically up and down along the slide grooves 22. When the movable plate 3 is pressed down to the bottom of the slide groove 22, the position of the movable plate 3 is determined, and at this time the locking component 4 can lock the movable plate 3. The slide groove 22 provides precise guidance for the movable plate 3, ensuring its vertical movement without deviation, so that the top limiting component 5 can evenly and accurately press each workpiece. Moreover, the bottom of the slide groove 22 acts as a mechanical limit, which clarifies the final locking position of the movable plate 3 and ensures the consistency of each clamping.
[0037] like Figs. 1 to 3 As shown, in this embodiment, the locking assembly 4 includes a locking rod 41, a mounting plate 42, a second elastic element 43, and a first handle 44. The side of the movable plate 3 is provided with a locking groove 31. The locking rod 41 slides through the side of the bracket 2. One end of the locking rod 41 can extend into the sliding groove 22, and one end of the locking rod 41 can be inserted into the locking groove 31 and limit the engagement with the locking groove 31. The other end of the locking rod 41 is fixedly connected to the first handle 44. The mounting plate 42 is fixedly sleeved on the locking rod 41. The second elastic element 43 is pre-pressed between the mounting plate 42 and the outer wall of the bracket 2.
[0038] In its natural state, the preload of the second elastic element 43 pulls the mounting plate 42, causing one end of the locking rod 41 to tend to insert into the locking groove 31 of the movable plate 3. Before pressing down the movable plate 3, the first handle 44 is pulled outward to drive the locking rod 41 out of the slide groove 22, creating clearance space for the movement of the movable plate 3. When the movable plate 3 is pressed down to the bottom of the slide groove 22, the first handle 44 is released. Under the elastic force of the second elastic element 43, the locking rod 41 moves to the locking groove 31 of the movable plate 3, realizing automatic locking of the movable plate 3. After the handle is finished, the first handle 44 is pulled outward to drive the locking rod 41 out of the locking groove 31, thereby releasing the fixation of the movable plate 3. The locking component 4 allows the operator to easily complete the locking and unlocking operations, making it convenient to use. Moreover, the movable plate 3 is locked by a mechanical pin structure, providing a rigid connection, large locking force, stability, and reliability, and effectively resisting vibration during processing. The second elastic element 43 is a spring.
[0039] like Figs. 1 to 3 As shown, in this embodiment, a connecting rod 32 is fixedly provided at the upper end of the movable plate 3. The connecting rod 32 slides through the top of the bracket 2, and a second handle 33 is fixedly provided at the end of the connecting rod 32 away from the movable plate 3.
[0040] In use, the operator can easily control the raising and lowering of the movable plate 3 via the connecting rod 32 by pulling or pressing down the second handle 33, thus improving ease of use.
[0041] like Figs. 1 to 3 As shown, in this embodiment, the top limiting component 5 includes a limiting plate 51, a first screw 52, a third handle 53, and a first sliding rod 54. The limiting plate 51 is located below the movable plate 3. The first screw 52 is threaded through the movable plate 3. One end of the first screw 52 is rotatably connected to the limiting plate 51 through a bearing, and the other end of the first screw 52 is fixedly connected to the third handle 53. The first sliding rod 54 slides through the movable plate 3, and the first sliding rod 54 is fixedly connected to the limiting plate 51.
[0042] In use, after the movable plate 3 is locked, rotating the third handle 53 drives the first screw 52 to rotate. Since the first screw 52 and the movable plate 3 are threadedly engaged, the rotation of the first screw 52 is converted into the linear lifting and lowering motion of the limiting plate 51, thereby driving the limiting plate 51 to move to abut against the top of the handle, thus achieving stable vertical pressing and fixing of multiple handles simultaneously. Moreover, after the current batch of handles is processed, if the subsequent batch is a handle of the same specification and size, there is no need to adjust the height of the limiting plate 51 again. After placing the handle into the storage slot 11, press down the movable plate 3 and lock it. At this time, the limiting plate 51 will naturally press the top of the handle. The final pressing height of the limiting plate 51 can be precisely adjusted through the top limiting component 5, so that the tooling can adapt to refrigerator handles of different heights and sizes, and has strong versatility. The cooperation between the movable plate 3 and the first sliding rod 54 plays a guiding and limiting role for the limiting plate 51, restricting the limiting plate 51 to only move up and down and not rotate, ensuring that the movement of the limiting plate 51 is smooth and precise.
[0043] like Figs. 1 to 3 As shown, in this embodiment, the bottom of the limiting plate 51 is provided with an arc-shaped groove 55, which corresponds to the storage groove 11. By processing an arc-shaped groove at the bottom of the limiting plate 51 that matches the shape of the top of the handle, the slight movement of the handle in the horizontal direction can be restricted, making the positioning more stable and reliable. Moreover, the arc-shaped surface fits the curved surface of the top of the handle, increasing the contact area and reducing the pressure per unit area, thus avoiding the possible indentation or damage to the handle surface caused by the concentration of clamping force.
[0044] like Figs. 1 to 3 As shown, in this embodiment, side limiting components 6 are provided on both sides of the storage slot 11. The side limiting components 6 are used to limit and fix the sides of the handle. By setting the side limiting components 6 to clamp the handle from the horizontal direction, the handle is prevented from moving horizontally. In cooperation with the top limiting component 5, the handle is completely constrained in the vertical and horizontal directions, forming a "four-sided limiting", which greatly improves the stability and accuracy during processing.
[0045] like As shown, in this embodiment, the side limiting component 6 includes a limiting block 61, a connecting block 62, a connecting plate 63, a second screw 64, a fourth handle 65, and a second slide rod 66. The bottom of the base 1 is provided with an installation groove 12. A connecting groove 13 is provided between the storage groove 11 and the installation groove 12. The limiting block 61 is slidably disposed in the storage groove 11. The connecting plate 63 is located in the installation groove 12. The connecting block 62 passes through the connecting groove 13. One end of the connecting block 62 is fixedly connected to the limiting block 61, and the other end of the connecting block 62 is fixedly connected to the connecting plate 63. The second screw 64 is rotatably disposed in the installation groove 12 through a bearing. One end of the second screw 64 extends to the outside of the base 1 and is fixedly connected to the fourth handle 65. The second slide rod 66 is fixedly disposed in the installation groove 12. The connecting plate 63 is threadedly sleeved on the second screw 64, and the connecting plate 63 is slidably sleeved on the second slide rod 66.
[0046] In use, after placing the handle into the storage slot 11, the fourth handle 65 is rotated to drive the second screw 64 to rotate. The connecting plate 63, which is threadedly engaged with the second screw 64, moves horizontally along the mounting slot 12 under the guidance of the second slide rod 66. The connecting plate 63 drives the limiting block 61 in the storage slot 11 to move through the connecting block 62. When both limiting blocks 61 on both sides abut against the side of the handle, the handle can be clamped to achieve horizontal positioning. By setting two side limiting components 6, the handle can be clamped or released from both sides. Moreover, by adjusting the threads, it can adapt to handles of different lengths, further enhancing the versatility of the tooling. The cooperation between the connecting plate 63 and the second slide rod 66 guides and limits the connecting plate 63, ensuring that the movement of the limiting block 61 is smooth and precise.
[0047] Working principle: When using the auxiliary positioning fixture for processing refrigerator handles provided in this application, multiple handles are first placed in multiple storage slots 11 on the top of the base 1. Then, the fourth handle 65 is rotated to drive the second screw 64 to rotate. The connecting plate 63, which is threaded with the second screw 64, will move horizontally along the mounting slot 12 under the guidance of the second slide rod 66. The connecting plate 63 drives the limiting block 61 in the storage slot 11 to move through the connecting block 62. When the limiting blocks 61 on both sides abut against the side of the handle, the handle can be clamped to achieve horizontal positioning.
[0048] Then, the first handle 44 is pulled outward to drive the locking rod 41 out of the slide groove 22, creating clearance space for the movement of the movable plate 3. Then, the operator presses down the second handle 33, which drives the movable plate 3 to move through the connecting rod 32. The movable plate 3 moves downward against the pre-pressure of the first elastic element 21, causing the top limiting component 5 at the bottom of the movable plate 3 to press against the top of the handle. When the movable plate 3 is pressed down to the bottom of the slide groove 22, the position of the movable plate 3 is determined. At this time, the first handle 44 is released. Under the elastic force of the second elastic element 43, the locking rod 41 moves to the locking groove 31 inserted into the movable plate 3, realizing the automatic locking of the position of the movable plate 3. Then, the third handle 53 is rotated to drive the first screw 52 to rotate. Since the first screw 52 and the movable plate 3 are threaded, the rotational motion of the first screw 52 will be converted into the linear lifting motion of the limiting plate 51, thereby driving the limiting plate 51 to move to abut against the top of the handle, thus realizing the simultaneous stable vertical pressing and fixing of multiple handles for subsequent drilling and other processing operations.
[0049] After the current batch of handles is processed, pull the first handle 44 outward to drive the locking rod 41 out of the locking groove 31, which will release the fixation of the movable plate 3. At this time, under the elastic force of the first elastic element 21, the movable plate 3 will automatically move upward to reset, making enough clearance space for the operator to load and unload the handle. If the subsequent batch is a handle of the same specification and size, there is no need to adjust the height of the limiting plate 51 again. After the handle is placed in the storage groove 11, press down the movable plate 3 and lock it. At this time, the limiting plate 51 will naturally press the top of the handle.
[0050] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. An auxiliary positioning fixture for processing refrigerator handles, characterized in that: The device includes a base (1), a bracket (2), a movable plate (3), a locking component (4), and a top limiting component (5). The top of the base (1) has multiple storage slots (11) for accommodating the handle. The bracket (2) is fixedly installed at the upper end of the base (1). The movable plate (3) is located inside the bracket (2), and a first elastic element (21) is pre-pressed between the movable plate (3) and the bracket (2). The locking component (4) is located on the side of the bracket (2) and is used to lock and fix the movable plate (3). The top limiting component (5) is located at the bottom of the movable plate (3) and is used to limit and fix the top of the handle.
2. The auxiliary positioning fixture for processing refrigerator handles according to claim 1, characterized in that: The inner walls on both sides of the bracket (2) are provided with sliding grooves (22). The two ends of the movable plate (3) are respectively limited and slidably connected to the corresponding sliding grooves (22). When the movable plate (3) is located at the bottom of the sliding groove (22), the locking component (4) can lock and fix the movable plate (3).
3. The auxiliary positioning fixture for processing refrigerator handles according to claim 2, characterized in that: The locking assembly (4) includes a locking rod (41), a mounting plate (42), a second elastic element (43), and a first handle (44). The side of the movable plate (3) is provided with a locking groove (31). The locking rod (41) slides through the side of the bracket (2). One end of the locking rod (41) can extend into the sliding groove (22), and one end of the locking rod (41) can be inserted into the locking groove (31) and limit the locking groove (31). The other end of the locking rod (41) is fixedly connected to the first handle (44). The mounting plate (42) is fixedly sleeved on the locking rod (41). The second elastic element (43) is pre-pressed between the mounting plate (42) and the outer wall of the bracket (2).
4. The auxiliary positioning fixture for processing refrigerator handles according to claim 1, characterized in that: A connecting rod (32) is fixedly provided at the upper end of the movable plate (3). The connecting rod (32) slides through the top of the bracket (2), and a second handle (33) is fixedly provided at the end of the connecting rod (32) away from the movable plate (3).
5. The auxiliary positioning fixture for processing refrigerator handles according to claim 1, characterized in that: The top limiting assembly (5) includes a limiting plate (51), a first screw (52), a third handle (53), and a first slide rod (54). The limiting plate (51) is located below the movable plate (3). The first screw (52) is threaded through the movable plate (3). One end of the first screw (52) is rotatably connected to the limiting plate (51) via a bearing, and the other end of the first screw (52) is fixedly connected to the third handle (53). The first slide rod (54) slides through the movable plate (3), and the first slide rod (54) is fixedly connected to the limiting plate (51).
6. The auxiliary positioning fixture for processing refrigerator handles according to claim 5, characterized in that: The bottom of the limiting plate (51) is provided with an arc-shaped groove (55), which corresponds to the storage groove (11).
7. The auxiliary positioning fixture for processing refrigerator handles according to claim 1, characterized in that: Both sides of the storage slot (11) are provided with side limiting components (6), which are used to limit and fix the side of the handle.
8. The auxiliary positioning fixture for processing refrigerator handles according to claim 7, characterized in that: The side limiting component (6) includes a limiting block (61), a connecting block (62), a connecting plate (63), a second screw (64), a fourth handle (65), and a second slide rod (66). The bottom of the base (1) has an installation groove (12). A connecting groove (13) connects the storage slot (11) and the installation slot (12). The limiting block (61) is slidably disposed within the storage slot (11). The connecting plate (63) is located within the installation groove (12). The connecting block (62) penetrates the connecting groove (13). One end of the connecting block (62) is fixedly connected to the limiting block (61), and the other end of the connecting block (62) is fixedly connected to the connecting plate (63). The second screw (64) is rotatably disposed in the mounting groove (12) through a bearing, and one end of the second screw (64) extends to the outside of the base (1) and is fixedly connected to the fourth handle (65). The second slide rod (66) is fixedly disposed in the mounting groove (12). The connecting plate (63) is threaded onto the second screw (64), and the connecting plate (63) is slidably disposed on the second slide rod (66).