A cutting device based on the automobile auxiliary panel armrest

Abstract

The present application relates to the field of automobile instrument panel armrest processing, especially to a cutting device based on automobile instrument panel armrest, which drives the positioning and clamping switching unit to move out of the installation cavity through the switching unit, synchronously switches the first clamping unit, the second clamping unit and the third clamping unit by the rotating roller, can select the corresponding clamping structure according to the different surfaces and processing positions of the workpiece body, without repeatedly disassembling and replacing the independent clamp; after switching is completed, the limiting plate locks the two sides of the switching unit, the supporting block and the positioning block jointly support and limit the supporting plate, improving the stability of the clamping position; the driving unit selectively drives the corresponding sliding plate lifting through the clamping block, wherein the synchronous limiting sliding groove cooperates with the synchronous guide assembly to convert the vertical movement of the sliding plate into the opposite movement of the two limiting clamping blocks, realizing the synchronous multi-point clamping of the armrest corner. The above structure cooperates with the cutting unit to improve the clamping switching efficiency and the repeated positioning accuracy.

Description

Technical Field

[0001] This invention relates to the field of automotive sub-dashboard armrest processing technology, and more particularly to a cutting device based on automotive sub-dashboard armrests. Background Technology

[0002] Automotive dashboard armrests are typically molded from plastic, with one side forming a convex curved surface and the other side forming a groove structure for assembly. After molding, excess material and burrs may remain around the armrest and in certain areas, requiring trimming with cutting equipment to ensure assembly precision and appearance quality.

[0003] Existing cutting equipment for automotive dashboard armrests typically uses a single-structure, dedicated clamp to hold the armrest in place. When machining the convex surface, concave surface, or different areas around the armrest is required, it is often necessary to change the clamp or remove the armrest and re-clamp it. This process of clamp replacement and secondary positioning is time-consuming, and repeated clamping can easily introduce positioning errors. Furthermore, since the armrest is a plastic shell with curved surfaces and grooves, using ordinary flat clamping or single-point clamping makes it difficult for the clamping area to fully conform to the armrest's contour. Lower clamping forces can easily cause misalignment, while higher clamping forces can easily cause indentations or deformation on the armrest's surface. Therefore, a cutting device is needed that can quickly switch clamping methods according to different machining positions on the armrest and achieve stable, multi-point linkage clamping. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a cutting device based on the armrest of an automotive sub-dashboard.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A cutting device based on the armrest of a car's sub-dashboard includes a worktable and a cutting unit. Guide rails are symmetrically arranged in the mounting cavity at the front end of the worktable, and switching units are slidably arranged on both sides of the guide rails. A positioning and clamping switching unit is rotatably arranged on the switching unit. The positioning and clamping switching unit includes a rotating roller and a first clamping unit, a second clamping unit, and a third clamping unit arranged circumferentially thereon. The three units respectively position and clamp different parts of the workpiece body. The mounting cavity is equipped with a limiting plate for locking the switching unit. A drive unit is symmetrically arranged on the top of the worktable. The locking block of the drive unit engages with a set of lifting connecting parts in the first clamping unit, the second clamping unit, and the third clamping unit. Both the second and third clamping units are equipped with synchronous guide components. The synchronous limiting slide and the corresponding inclined groove section roll in cooperation with the synchronous guide components to convert the vertical displacement of the lifting connecting part into the opposite displacement of the corresponding limiting locking block. The cutting unit moves longitudinally, laterally, and vertically to cut the workpiece body.

[0006] Furthermore, in a preferred configuration, the mounting cavity is located at the front end of the worktable, the guide rails are arranged longitudinally and symmetrically at the bottom of the mounting cavity, a round hole socket is provided at the front side of the bottom of the mounting cavity between the two guide rails, a support block is arranged longitudinally at the top of the rear sidewall of the mounting cavity, and positioning blocks are arranged longitudinally above both sides of the support block; the cutting unit is located at the top of the worktable and at the rear end of the mounting cavity. The cutting unit includes a first electric slide rail longitudinally arranged on the side walls of the two plates on the top of the worktable, a second electric slide rail horizontally arranged between the two first electric slide rails, the second electric slide rail and the first electric slide rail slidingly engaged longitudinally, a vertically arranged lifting system slidably arranged on the second electric slide rail, and a cutting component being lifted and lowered on the lifting system.

[0007] In addition, a preferred structure is that the switching unit includes a switching frame, a guide block connecting plate is fixedly connected to one side of the bottom of the switching frame, a guide block is provided at the bottom of the guide block connecting plate, and the guide block slides with the corresponding guide rail; a rotating shaft is provided longitudinally at the top of the switching frame, the positioning and clamping switching unit is rotatably mounted on the rotating shaft, a handle is provided vertically on the front surface of the switching frame, and an insertion block is provided at the bottom of the side of the switching frame near the other switching frame.

[0008] In addition, a preferred structure is that the top of the limiting plate is vertically provided with a handle, and the bottom of the limiting plate is vertically and symmetrically provided with two limiting rods. The two limiting rods pass through the plugs on the two side switching frames respectively, and the bottom end of the limiting rods is inserted into the round hole socket to restrict the two side switching frames from sliding along the guide rail.

[0009] Furthermore, in a preferred configuration, the positioning and clamping switching unit includes a rotating roller, which is rotatably mounted on a rotating shaft through a rotating hole. Three grips are evenly arranged circumferentially on the front sidewall of the rotating roller, and three component mounting plates are respectively arranged on the sidewall of the rotating roller behind the three grips. A first clamping unit, a second clamping unit, and a third clamping unit are arranged sequentially on the three component mounting plates. The component mounting plate includes a support plate, and slide rod frames are vertically arranged on both sides of the support plate. A slide rod is vertically arranged inside the slide rod frame, and a spring is sleeved on the slide rod.

[0010] Furthermore, in a preferred configuration, the first clamping unit includes a first positioning support block disposed on the middle of the upper surface of the support plate, a second positioning support block disposed on one side of the first positioning support block, a first sliding plate disposed between the two sliding rods, a positioning pressure plate disposed at one end of the first sliding plate, and a first connecting plate fixedly connected to the end of the first sliding plate away from the positioning pressure plate; the positioning pressure plate is located above the first positioning support block and the second positioning support block to form a clamping space for clamping the middle of the workpiece body, and the first sliding plate abuts against the spring.

[0011] In addition, in a preferred configuration, synchronous guide components are symmetrically arranged on the support plates of the second clamping unit and the third clamping unit. The synchronous guide components include a longitudinally arranged slide rail, a slider slidably arranged on the slide rail, a roller rotatably arranged on one side of the slider, and a limit block connecting plate arranged on the top of the slider.

[0012] In addition, the preferred structure is that the second clamping unit includes a second sliding plate that is slidably and vertically disposed between two sliding rods. The second sliding plate is symmetrically provided with inclined synchronous limiting grooves. The synchronous limiting grooves are in rolling cooperation with the rollers of the corresponding synchronous guide components. A second connecting plate is fixedly connected to one side of the second sliding plate. A third positioning support block is provided in the middle of the upper surface of the support plate, and a first limiting block and a second limiting block are respectively provided on the limiting block connecting plates on both sides. The first limiting block and the second limiting block together with the third positioning support block form a multi-point clamping structure for the workpiece body.

[0013] In addition, a preferred structure is that the third clamping unit includes a third sliding plate that is slidably and vertically disposed between two sliding rods. Both sides of the third sliding plate are provided with inclined grooves that are the same as the synchronous limiting groove structure. The inclined grooves are in rolling cooperation with the rollers of the corresponding synchronous guide components. A fourth positioning support block is provided in the middle of the upper surface of the support plate, and a third and a fourth limiting block are respectively provided on the limiting block connecting plates on both sides. The third and fourth limiting blocks together with the fourth positioning support block form a multi-point clamping structure for the workpiece body.

[0014] In addition, a preferred structure is that the drive unit includes a mounting frame, which is fixedly installed on both sides of the mounting cavity on the top of the workbench. A cylinder is vertically installed on the mounting frame, and a locking block is provided at the bottom end of the piston rod of the cylinder. The locking block has a slot that is adapted to the first connecting plate, the second connecting plate and the third sliding plate. The support plate at the bottom of the positioning and clamping switching unit supports and cooperates with the support block, and is limited by the positioning blocks on both sides of the support block. The cylinder drives one of the first, second and third sliding plates that are locked to it to move up and down along the sliding rod through the locking block. The spring is used for the elastic reset of the corresponding sliding plate.

[0015] The beneficial effects of this invention are as follows: 1. The switching unit drives the positioning and clamping switching unit to move out of the mounting cavity. The rotating roller synchronously switches the first clamping unit, the second clamping unit and the third clamping unit. The corresponding clamping structure can be selected for different surfaces and processing parts of the workpiece body without repeatedly replacing the independent fixtures. After the switching is completed, the limiting plate locks the switching units on both sides. The support block and the positioning block jointly support and limit the support plate, improving the stability of the clamping position.

[0016] 2. The drive unit selectively drives the corresponding slide plate to rise and fall via locking blocks. The synchronous limiting slide groove, in conjunction with the synchronous guide assembly, converts the vertical movement of the slide plate into the opposing movement of the limiting locking blocks on both sides, achieving synchronous multi-point clamping at the corners of the handrail. This structure, working in conjunction with the cutting unit, improves clamping switching efficiency and repeatability, maintains the stability of the workpiece body under relatively low clamping force, and reduces pressure damage and deformation to the handrail's exterior surface. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the cutting equipment; Figure 2 A schematic diagram of the cutting equipment viewed from the front; Figure 3 This is a partial structural diagram of the front end of the workbench; Figure 4 This is a schematic diagram of the internal structure of the mounting cavity; Figure 5 This is a schematic diagram of the drive unit. Figure 6 This is a schematic diagram of the structure of the switching unit and the limiting plate. Figure 7 This is a schematic diagram of the limiting plate. Figure 8 This is a schematic diagram of the structure when the first clamping unit clamps the workpiece body. Figure 9 A schematic diagram of the positioning clamping switching unit and the switching unit; Figure 10 This is a schematic diagram showing the distribution of the three clamping units on the rotating roller. Figure 11 This is a structural diagram showing the disassembled structure of the first clamping unit; Figure 12 A schematic diagram of the structure when the second clamping unit clamps the workpiece body; Figure 13 This is a structural diagram showing the disassembled second clamping unit; Figure 14 This is a partial structural diagram of the second clamping unit; Figure 15 A schematic diagram of the structure of the decomposed synchronous guidance component; Figure 16 A schematic diagram of the structure when the third clamping unit clamps the workpiece body; Figure 17 This is a structural diagram showing the disassembled third clamping unit; Figure 18 This is a partial structural diagram of the third clamping unit; Figure 19 This is a schematic diagram of the structure of the outer convex surface of the workpiece body; Figure 20This is a schematic diagram of the structure of the grooved surface of the workpiece.

[0018] In the diagram: 01. Workbench; 011. Mounting cavity; 012. Guide rail; 013. Round hole socket; 014. Support block; 015. Positioning block; 02. Cutting unit; 021. First electric slide rail; 022. Second electric slide rail; 023. Lifting system; 024. Cutting assembly; 03. Switching unit; 04. Positioning and clamping switching unit; 05. Drive unit; 051. Mounting frame; 052. Cylinder; 053. Clamping block; 06. Workpiece body; 1. Switching frame; 11. Guide block connecting plate; 12. Rotating shaft; 13. Insertion block; 14. Handle; 15. Guide block; 2. Limiting plate; 21. Handle; 22. Limiting insertion rod; 3. Rotating roller; 31. Rotating hole; 32. Grip bar; 4. Assembly mounting plate. 41. Mounting plate; 411. Slide rod frame; 42. Spring; 43. Support plate; 5. First clamping unit; 51. First sliding plate; 52. First connecting plate; 53. Positioning pressure plate; 54. First positioning support block; 55. Second positioning support block; 6. Second clamping unit; 61. Second sliding plate; 611. Synchronous limiting slide groove; 612. Second connecting plate; 62. Third positioning support block; 63. First limiting block; 64. Second limiting block; 7. Third clamping unit; 71. Third sliding plate; 72. Fourth positioning support block; 73. Third limiting block; 74. Fourth limiting block; 8. Synchronous guide assembly; 81. Slide rail; 82. Slider; 83. Roller; 84. Limiting block connecting plate. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Reference Figure 1-20 A cutting device based on the armrest of an automotive sub-dashboard includes a worktable 01, a cutting unit 02, a switching unit 03, a positioning and clamping switching unit 04, a drive unit 05, and a workpiece body 06.

[0021] Workpiece body 06 is a grab handle housing installed on the automotive sub-dashboard. One side has a convex curved surface, and the other side has a groove structure for assembly. This equipment is mainly used to cut and trim the edge residue, burrs, and localized areas to be processed after the workpiece body 06 has been formed.

[0022] Specifically, the workpiece body 06 is typically an injection-molded plastic shell. The machining allowance of the area to be cut is small, which is a shallow trimming process, resulting in low cutting resistance and vibration. Therefore, each clamping unit does not need to apply large clamping force. The workpiece body 06 can be kept stable through positioning support and multi-point limiting, while avoiding indentations or deformation on the surface of the workpiece body 06 due to excessive clamping force.

[0023] The front end of the workbench 01 has a mounting cavity 011. Two guide rails 012 are symmetrically arranged longitudinally at the bottom of the mounting cavity 011, and switching units 03 are slidably mounted on the two guide rails 012 respectively. A round hole socket 013 is provided at the front side of the bottom of the mounting cavity 011 between the two guide rails 012. A support block 014 is provided at the top of the rear side wall of the mounting cavity 011, and positioning blocks 015 are provided diagonally above both sides of the support block 014.

[0024] The switching unit 03 includes a switching frame 1. A guide block connecting plate 11 is fixedly connected to one side of the bottom of the switching frame 1. A guide block 15 is provided at the bottom of the guide block connecting plate 11, and the guide block 15 is slidably engaged with the corresponding guide rail 012. A rotating shaft 12 is longitudinally arranged at the top of the switching frame 1, and a handle 14 is vertically arranged on the front surface. An insert block 13 is provided at the bottom of the side of the switching frame 1 closest to another switching frame 1.

[0025] Thus, the handle 14 can drive the switching frame 1 to move into or out of the mounting cavity 011 along the guide rail 012, so as to rotate and switch the positioning clamping switching unit 04.

[0026] A limiting plate 2 is provided inside the mounting cavity 011. A handle 21 is provided on the top of the limiting plate 2, and two limiting rods 22 are vertically and symmetrically arranged at the bottom. The two limiting rods 22 pass through the plug blocks 13 on the two side switching frames 1 respectively, and their bottom ends are inserted into the round hole sockets 013 to restrict the movement of the two side switching frames 1 along the guide rail 012.

[0027] When the handle 21 is lifted upwards, the limiting rod 22 disengages from the round hole socket 013 and the plug block 13, thereby releasing the restriction on the switching frame 1; when the limiting plate 2 is placed downwards, the limiting rod 22 passes through the plug block 13 again and is inserted into the round hole socket 013 to complete the locking.

[0028] In some embodiments, the positioning and clamping switching unit 04 includes a rotating roller 3, which is rotatably mounted on the rotating shaft 12 through a rotating hole 31. Three grips 32 are evenly arranged circumferentially on the front end sidewall of the rotating roller 3, and three component mounting plates 4 are respectively arranged on the sidewall behind the three grips 32.

[0029] The three component mounting plates 4 are respectively equipped with a first clamping unit 5, a second clamping unit 6, and a third clamping unit 7. By rotating the rotating roller 3 through the gripping rod 32, one set of the three clamping units can be rotated to the clamping position, thereby switching the positioning mode of the workpiece body 06 without repeatedly disassembling the fixture.

[0030] The component mounting plate 4 includes a support plate 43, with slide bar frames 41 on both sides of the support plate 43. A slide bar 411 is vertically installed inside the slide bar frame 41, and a spring 42 is sleeved on the slide bar 411. The slide plate in the corresponding clamping unit moves up and down along the slide bar 411, and is assisted in returning to its original position by the spring 42 after the drive is released.

[0031] In some embodiments, the first clamping unit 5 includes a first sliding plate 51, a first connecting plate 52, a positioning pressure plate 53, a first positioning support block 54, and a second positioning support block 55.

[0032] The first positioning support block 54 and the second positioning support block 55 are disposed on the upper surface of the support plate 43 to support the groove surface of the workpiece body 06. The first sliding plate 51 is slidably disposed between the two sliding rods 411, with a positioning pressure plate 53 at one end and a first connecting plate 52 fixedly connected to the other end.

[0033] When the first slide plate 51 descends, the positioning plate 53 presses on the middle of the outer convex surface of the workpiece body 06, and forms an upper and lower cooperation with the first positioning support block 54 and the second positioning support block 55 to restrict the movement of the workpiece body 06, while keeping the surrounding cutting position exposed.

[0034] In some embodiments, the second clamping unit 6 includes a second sliding plate 61, a second connecting plate 612, a third positioning support block 62, a first limiting block 63, and a second limiting block 64.

[0035] The second sliding plate 61 is slidably mounted between two sliding rods 411, and symmetrically provided with inclined synchronous limiting grooves 611 on both sides. The second connecting plate 612 is fixedly mounted on one side of the second sliding plate 61. The third positioning support block 62 is located in the middle of the upper surface of the support plate 43 and is used to support the convex curved surface of the workpiece body 06.

[0036] Both the second clamping unit 6 and the third clamping unit 7 have symmetrically arranged synchronous guide components 8 on their support plates 43. The synchronous guide component 8 includes a longitudinally arranged slide rail 81, a slider 82 that slides on the slide rail 81, a roller 83 that rotates on one side of the slider 82, and a limit block connecting plate 84 on the top.

[0037] The first limiting block 63 and the second limiting block 64 of the second clamping unit 6 are respectively disposed on the two side limiting block connecting plates 84, and the two side rollers 83 respectively roll in cooperation with the corresponding synchronous limiting slide grooves 611.

[0038] When the second slide plate 61 descends, the inclined synchronous limiting slide groove 611 pushes the roller 83, causing the two sliders 82 to move closer to each other along the slide rail 81, and driving the first limiting block 63 and the second limiting block 64 to clamp the corner of the workpiece body 06.

[0039] Thus, the vertical movement of the second sliding plate 61 can be converted into the lateral opposing movement of the two limiting blocks on both sides, and together with the third positioning support block 62, they form a multi-point positioning structure.

[0040] The third clamping unit 7 includes a third sliding plate 71, a fourth positioning support block 72, a third limiting block 73, and a fourth limiting block 74. The fourth positioning support block 72 is used to support the groove surface of the workpiece body 06, and the third limiting block 73 and the fourth limiting block 74 are respectively installed on the limiting block connecting plates 84 on both sides.

[0041] The third slide plate 71 has inclined groove sections on both sides with the same structure as the synchronous limiting slide groove 611. Its cooperation principle with the synchronous guide component 8 is the same as that of the second clamping unit 6. When the third slide plate 71 descends, it drives the third limiting block 73 and the fourth limiting block 74 to move closer to each other, and together with the fourth positioning support block 72, it performs multi-point positioning of the workpiece body 06.

[0042] In some embodiments, two sets of drive units 05 are provided, located on both sides of the mounting cavity 011 respectively. The drive unit 05 includes a mounting frame 051, on which a cylinder 052 is vertically mounted. The bottom end of the piston rod of the cylinder 052 is connected to a locking block 053, and a locking groove is provided on the locking block 053.

[0043] When the first clamping unit 5, the second clamping unit 6, or the third clamping unit 7 rotates to the clamping position, the corresponding connecting part of the first connecting plate 52, the second connecting plate 612, or the third sliding plate 71 inserts into the slot of the locking block 053. When the piston rod of the cylinder 052 extends, the locking block 053 drives the sliding plate currently in the clamping position to descend, thereby enabling the same drive unit 05 to selectively drive the three clamping units.

[0044] After the positioning and clamping switching unit 04 is pushed into the mounting cavity 011 along with the switching frame 1, the support plate 43 located at the clamping position is supported on the support block 014 and is limited by the positioning blocks 015 on both sides.

[0045] The support block 014 is used to bear the vertical forces generated by the workpiece body 06, the clamping unit, and the cutting process, while the positioning block 015 is used to limit the lateral displacement of the support plate 43. Therefore, the workpiece body 06 does not rely solely on clamping force to maintain its position, but rather the support and positioning system is formed by the support block 014, the positioning block 015, the corresponding positioning support block, and the corresponding limiting block.

[0046] In some embodiments, the cutting unit 02 is disposed on the top of the worktable 01 and located at the rear end of the mounting cavity 011, and includes a first electric slide rail 021, a second electric slide rail 022, a lifting system 023 and a cutting assembly 024.

[0047] Two first electric slide rails 021 are longitudinally arranged on the side walls of the top two side plates of the worktable 01. A second electric slide rail 022 is horizontally arranged between the two first electric slide rails 021 and moves longitudinally along the first electric slide rails 021. A lifting system 023 is vertically arranged on the second electric slide rail 022 and moves laterally along the second electric slide rail 022. The cutting assembly 024 is lifted and lowered on the lifting system 023.

[0048] In this embodiment, the cutting unit 02 is an existing three-axis moving cutting mechanism. The internal drive structure, control method and electrical connection method of the first electric slide rail 021, the second electric slide rail 022, the lifting system 023 and the cutting component 024 can all adopt existing mature technologies, which will not be described in detail in this invention.

[0049] Specifically, the cutting assembly 024 can use an existing electric spindle and a cutting tool installed at the output end of the electric spindle. Through the cooperation of the first electric slide rail 021, the second electric slide rail 022 and the lifting system 023, it can cut the edge residue, burrs and local areas to be processed of the workpiece body 06 along a preset path.

[0050] The specific method of using the cutting device based on the armrest of the car's sub-dashboard provided in this embodiment is as follows: First, lift the limiting plate 2 upward so that the limiting plug 22 is disengaged from the round hole socket 013 and the plug block 13, and then pull the two side switching frames 1 outward along the guide rail 012 through the handle 14.

[0051] Subsequently, by rotating the rotating roller 3 through the gripping rod 32, the clamping unit that matches the part to be processed on the workpiece body 06 is rotated to the clamping position, and then the two side switching frames 1 are pushed back into the mounting cavity 011.

[0052] At this time, the corresponding support plate 43 is supported on the support block 014 and limited by the positioning block 015, and the corresponding connecting parts of the first connecting plate 52, the second connecting plate 612 or the third sliding plate 71 are inserted into the slots of the locking block 053. Then, the limiting rod 22 is passed through the plug block 13 and inserted into the round hole socket 013 to complete the locking of the two-sided switching frame 1.

[0053] After the workpiece body 06 is placed, the piston rods of the cylinders 052 on both sides are extended. When the first clamping unit 5 is in the clamping position, the positioning plate 53 descends and cooperates with the first positioning support block 54 and the second positioning support block 55 to clamp the middle part of the workpiece body 06; when the second clamping unit 6 or the third clamping unit 7 is in the clamping position, the corresponding sliding plate descends and drives the limit blocks on both sides to move closer to each other through the cooperation of the roller 83 and the inclined groove, thereby completing multi-point clamping.

[0054] After clamping, the cutting unit 02 drives the cutting assembly 024 to move along a preset path to cut and trim the workpiece body 06. Since the workpiece body 06 is undergoing small-margin trimming, the cutting force and vibration are relatively small. At the same time, the corresponding positioning support block bears the main support role, and the limit blocks are mainly used to limit displacement. Therefore, it is not necessary to apply excessive clamping force to ensure machining stability.

[0055] After the cutting is completed, the piston rod of cylinder 052 retracts, and the corresponding slide plate is reset under the action of the locking block 053 and the spring 42. The positioning plate 53 rises, or the two limit locking blocks move away from each other, thereby releasing the clamping of the workpiece body 06. Then the machined workpiece body 06 is removed.

[0056] In this invention, the switching unit 03 drives the positioning and clamping switching unit 04 out of the mounting cavity 011. The rotating roller 3 synchronously switches the first clamping unit 5, the second clamping unit 6, and the third clamping unit 7, allowing for the selection of corresponding clamping structures for different surfaces and processing areas of the workpiece body 06 without the need for repeated replacement of individual fixtures. After switching, the limiting plate 2 locks the switching units 03 on both sides, and the support block 014 and positioning block 015 jointly support and limit the support plate 43, improving the stability of the clamping position. The driving unit 05 selectively drives the corresponding sliding plate to rise and fall via the locking block 053. The synchronous limiting slide groove 611 cooperates with the synchronous guide component 8 to convert the vertical movement of the sliding plate into the opposing movement of the limiting locking blocks on both sides, achieving synchronous multi-point clamping of the handrail corners. This structure, in conjunction with the cutting unit 02, improves clamping switching efficiency and repeatability, and maintains the stability of the workpiece body 06 under relatively small clamping forces, reducing damage or deformation to the handrail's exterior surface.

[0057] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cutting device based on a car's sub-dashboard armrest, comprising a worktable (01) and a cutting unit (02), characterized in that, The mounting cavity (011) at the front end of the workbench (01) is symmetrically provided with guide rails (012), and a switching unit (03) is slidably provided on both sides of the guide rails (012). A positioning and clamping switching unit (04) is rotatably provided on the switching unit (03). The positioning and clamping switching unit (04) includes a rotating roller (3) and a first clamping unit (5), a second clamping unit (6) and a third clamping unit (7) arranged along its circumference. The three units respectively position and clamp different parts of the workpiece body (06). The mounting cavity (011) is provided with a limiting plate (2) for locking the switching unit (03). The top of the worktable (01) is symmetrically provided with a driving unit (05). The locking block (053) of the driving unit (05) is engaged with a set of lifting connecting parts in the first clamping unit (5), the second clamping unit (6) and the third clamping unit (7). The second clamping unit (6) and the third clamping unit (7) are both provided with synchronous guide components (8). The synchronous limiting slide (611) and the corresponding inclined groove section are respectively engaged with the roller (83) of the corresponding synchronous guide component (8) to convert the vertical displacement of the lifting connecting part into the opposite displacement of the corresponding limiting locking block. The cutting unit (02) moves along the longitudinal, transverse and vertical directions and cuts the workpiece body (06).

2. The cutting device based on the armrest of an automotive sub-dashboard according to claim 1, characterized in that, The mounting cavity (011) is located at the front end of the workbench (01). The guide rails (012) are longitudinally symmetrically arranged at the bottom of the mounting cavity (011). A round hole socket (013) is provided on the front side of the bottom of the mounting cavity (011) between the two guide rails (012). A support block (014) is longitudinally arranged on the top of the rear side wall of the mounting cavity (011). A positioning block (015) is longitudinally arranged on the upper side of both sides of the support block (014). The cutting unit (02) is located on the top of the workbench (01) and at the rear end of the mounting cavity (011). The cutting unit (02) includes a first electric slide rail (021) longitudinally arranged on the side walls of the top two plates of the worktable (01), and a second electric slide rail (022) horizontally arranged between the two first electric slide rails (021). The second electric slide rail (022) slides longitudinally with the first electric slide rail (021). A vertically arranged lifting system (023) is horizontally slidably arranged on the second electric slide rail (022), and a cutting component (024) is lifted and lowered on the lifting system (023).

3. The cutting device based on the armrest of an automotive sub-dashboard according to claim 2, characterized in that, The switching unit (03) includes a switching frame (1), a guide block connecting plate (11) is fixedly connected to one side of the bottom of the switching frame (1), a guide block (15) is provided at the bottom of the guide block connecting plate (11), and the guide block (15) slides in cooperation with the corresponding guide rail (012); a rotating shaft (12) is provided longitudinally at the top of the switching frame (1), the positioning and clamping switching unit (04) is rotatably mounted on the rotating shaft (12), a handle (14) is provided vertically on the front surface of the switching frame (1), and an insert block (13) is provided at the bottom of the side of the switching frame (1) near another switching frame (1).

4. The cutting device based on the armrest of an automotive sub-dashboard according to claim 3, characterized in that, The top of the limiting plate (2) is vertically provided with a handle (21), and the bottom of the limiting plate (2) is vertically and symmetrically provided with two limiting rods (22). The two limiting rods (22) pass through the plugs (13) on the two side switching frames (1) respectively, and the bottom end of the limiting rods (22) is inserted into the round hole socket (013) to restrict the two side switching frames (1) from sliding along the guide rail (012).

5. A cutting device based on an automotive sub-dashboard armrest according to claim 3, characterized in that, The positioning and clamping switching unit (04) includes a rotating roller (3), which is rotatably mounted on the rotating shaft (12) through a rotating hole (31). Three grips (32) are evenly arranged on the front side wall of the rotating roller (3) along the circumference. Three component mounting plates (4) are respectively arranged on the side wall of the rotating roller (3) behind the three grips (32). A first clamping unit (5), a second clamping unit (6) and a third clamping unit (7) are arranged on the three component mounting plates (4) in sequence. The component mounting plate (4) includes a support plate (43). A slide bar frame (41) is vertically arranged on both sides of the support plate (43). A slide bar (411) is vertically arranged inside the slide bar frame (41), and a spring (42) is sleeved on the slide bar (411).

6. A cutting device based on an automotive sub-dashboard armrest according to claim 5, characterized in that, The first clamping unit (5) includes a first positioning support block (54) disposed in the middle of the upper surface of the support plate (43), a second positioning support block (55) disposed on one side of the first positioning support block (54), a first sliding plate (51) being slidably disposed between two sliding rods (411), a positioning pressure plate (53) being disposed at one end of the first sliding plate (51), and a first connecting plate (52) being fixedly connected to the end of the first sliding plate (51) away from the positioning pressure plate (53); the positioning pressure plate (53) is located above the first positioning support block (54) and the second positioning support block (55) to form a clamping space for clamping the middle of the workpiece body (06), and the first sliding plate (51) abuts against the spring (42).

7. A cutting device based on an automotive sub-dashboard armrest according to claim 5, characterized in that, The second clamping unit (6) and the third clamping unit (7) are symmetrically provided with synchronous guide components (8) on their support plates (43). The synchronous guide components (8) include a longitudinally arranged slide rail (81), a slider (82) is slidably arranged on the slide rail (81), a roller (83) is rotatably arranged on one side of the slider (82), and a limit block connecting plate (84) is provided on the top of the slider (82).

8. A cutting device based on an automotive sub-dashboard armrest according to claim 7, characterized in that, The second clamping unit (6) includes a second sliding plate (61) that is slidably and vertically disposed between two sliding rods (411). The second sliding plate (61) is symmetrically provided with inclined synchronous limiting grooves (611). The synchronous limiting grooves (611) are in rolling cooperation with the rollers (83) of the corresponding synchronous guide components (8). A second connecting plate (612) is fixedly connected to one side of the second sliding plate (61). A third positioning support block (62) is provided in the middle of the upper surface of the support plate (43), and a first limiting block (63) and a second limiting block (64) are respectively provided on the two side limiting block connecting plates (84). The first limiting block (63) and the second limiting block (64) together with the third positioning support block (62) form a multi-point clamping structure for the workpiece body (06).

9. A cutting device based on an automotive sub-dashboard armrest according to claim 7, characterized in that, The third clamping unit (7) includes a third sliding plate (71) that is slidably and vertically disposed between two sliding rods (411). Both sides of the third sliding plate (71) are provided with inclined grooves that have the same structure as the synchronous limiting groove (611). The inclined grooves are in rolling cooperation with the rollers (83) of the corresponding synchronous guide component (8). The upper surface of the support plate (43) is provided with a fourth positioning support block (72) in the middle, and the two side limit block connecting plates (84) are respectively provided with a third limit block (73) and a fourth limit block (74). The third limit block (73) and the fourth limit block (74) together with the fourth positioning support block (72) form a multi-point clamping structure of the workpiece body (06).

10. A cutting device based on an automotive sub-dashboard armrest according to claim 1, characterized in that, The drive unit (05) includes a mounting frame (051), which is fixedly installed on the top of the workbench (01) on both sides of the mounting cavity (011). A cylinder (052) is vertically installed on the mounting frame (051), and a locking block (053) is provided at the bottom of the piston rod of the cylinder (052). The locking block (053) has a slot that is compatible with the first connecting plate (52), the second connecting plate (612) and the third sliding plate (71). The support plate (43) at the bottom of the positioning and clamping switching unit (04) supports and cooperates with the support block (014), and is limited by the positioning blocks (015) on both sides of the support block (014). The cylinder (052) drives one of the first slide plate (51), the second slide plate (61) and the third slide plate (71) that are engaged with it to rise and fall along the slide rod (411) through the locking block (053). The spring (42) is used for the elastic reset of the corresponding slide plate.

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