Automobile EVA foam punching machine
By designing a punching machine for EVA foam, the EVA foam is punched and cut using multiple drive cylinders and lifting components in batches, the problem of oblique edges in the cut when the EVA foam is thick is solved, and the processing quality is improved.
Patent Information
- Application Number
- CN202510187555.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-05-13
AI Technical Summary
Because the thickness of EVA foam is large, when punching and cutting directly through the cutter, the instant contact of the cutting knife will cause the EVA foam to deform, resulting in oblique edges at the cutter, affecting the processing quality of EVA foam.
An EVA foam punching machine for automobiles is designed. By setting up multiple driving cylinders and lifting components on the punching workbench, the EVA foam is punched and cut in batches by lowering rectangular cutters. Each drop distance is one-third of the thickness of the foam to avoid deformation caused by single cutter contact.
Through partial punching and cutting, the incisions appear in the cut when the EVA foam is thicker is effectively alleviated, and the processing quality of the EVA foam is improved.
Smart Images
Figure CN119974121A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of EVA foam processing, in particular to an EVA foam punching and cutting machine for automobiles. Background Art
[0002] Foam is a material made of foamed plastic particles, referred to as foam. EVA foam is one of the types. Foam has a series of characteristics such as elasticity, light weight, fast pressure-sensitive fixation, easy to use, easy to bend, ultra-thin volume, and reliable performance. Due to its unique properties, EVA foam is often made into automotive linings, cushions and other structures. To process such structures, long strips of foam are usually punched into specific shapes by punching, and the foam is punched and cut by setting a unique cutting tool on the punching machine.
[0003] Due to the large thickness of EVA foam, if it is punched directly with a cutter, the instantaneous contact of the cutter will cause the EVA foam to deform, which will result in a bevel at the cut. The thicker the EVA foam, the more obvious this situation is, which affects the processing quality of the EVA foam. Summary of the invention
[0005] In view of the shortcomings of the prior art, the present invention provides an EVA foam punching and cutting machine for automobiles, which solves the problem that due to the large thickness of EVA foam, the instantaneous contact of the cutter when punching directly with a cutter will cause the EVA foam to deform, which will result in the existence of a bevel at the incision. The thicker the EVA foam, the more obvious this situation is, which affects the processing quality of the EVA foam.
[0006] (II) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: an EVA foam punching machine for automobiles, comprising a punching workbench, the upper surface of the punching workbench is fixedly connected to a foam placing table, the upper surface of the foam placing table is provided with an embedding groove, a top material assembly is arranged inside the embedding groove, two vertical lifting rods are slidably connected through both sides of the surface of the foam placing table, the tops of the two vertical lifting rods on the same side are fixedly connected with a connecting fixing plate, the bottom of the vertical lifting rods penetrates the punching workbench and extends to the bottom of it, and a driving vertical lifting rod is installed at the bottom of the punching workbench. A driving component for lifting the lifting rod, an L-shaped mounting frame is fixedly connected to the upper surface of the punching workbench and located at the rear side of the foam placing table, the L-shaped mounting frame is connected to a horizontal connecting plate body through a connecting component, the upper surface of the horizontal connecting plate body is fixedly connected to a third driving cylinder, the piston end of the third driving cylinder is fixedly connected to a fixed outer rod, the interior of the fixed outer rod is slidably connected to a movable inner lifting rod, the bottom of the movable inner lifting rod is fixedly connected to a mounting frame, the bottom of the mounting frame is fixedly connected to a rectangular cutter, and the top of the mounting frame is equipped with a lifting component, a resistance component and a material return component.
[0007] Preferably, the ejecting assembly includes a second driving cylinder fixedly connected to the lower surface of the punching workbench, the piston end of the second driving cylinder extends to the interior of the embedding groove and is fixedly connected to an embedding mounting plate, the upper surface of the embedding mounting plate is flush with the inner bottom of the embedding groove, and the second driving cylinder is started, and the piston end of the second driving cylinder rises with the embedding mounting plate, so that the embedding mounting plate can withdraw the finished EVA foam from the inside of the embedding groove.
[0008] Preferably, the driving assembly includes a first driving cylinder fixedly connected to the bottom of the punching workbench, the piston end of the first driving cylinder is fixedly connected to a linkage mounting rod, the linkage mounting rod is fixedly connected to the bottom ends of four vertical lifting rods, and the first driving cylinder is started, the piston end of the first driving cylinder brings the linkage mounting rod down, and the linkage mounting rod brings the four vertical lifting rods down, causing the two connecting fixed plates to descend.
[0009] Preferably, the connecting assembly includes a first fixing plate fixedly connected to the side wall of the horizontal connecting plate body, a second fixing plate is fixedly connected to the top side of the L-shaped mounting frame, the first fixing plate and the second fixing plate are connected by bolts, and matching threaded holes are provided on the side walls of the first fixing plate and the second fixing plate.
[0010] Preferably, the lifting assembly includes a servo motor fixedly connected to the top of the mounting frame, the output shaft of the servo motor is fixedly connected to a threaded rotating rod, the outer surface of the threaded rotating rod is threadedly connected to a threaded connecting block, the threaded connecting block is fixedly connected to the side wall of the fixed outer sleeve rod, and the servo motor is started, and the output shaft of the servo motor rotates with the threaded rotating rod, and since the threaded rotating rod is threadedly connected to the threaded connecting block, the mounting frame descends with the rectangular cutter.
[0011] Preferably, the interference assembly includes two auxiliary connecting frames, and the two auxiliary connecting frames are symmetrically connected to the top of the mounting frame. One end of the auxiliary connecting frame away from the mounting frame is fixedly connected with an installation interference block. When the mounting frame descends, the two auxiliary connecting frames are brought down with them, and the auxiliary connecting frames descend with the installation interference block, so that the installation interference block contacts the connecting fixed plate.
[0012] Preferably, a rubber pad is installed on the lower surface of the mounting resistance block, and the mounting resistance block is located directly above the corresponding connecting fixing plate.
[0013] Preferably, the material stripping assembly includes a fourth driving cylinder fixedly connected to the top of the mounting frame, the piston end of the fourth driving cylinder extends to the interior of the mounting frame and is fixedly connected to a lifting material stripping plate, the lifting material stripping plate is slidably connected to the interior of the mounting frame, the fourth driving cylinder is started, the piston end of the fourth driving cylinder brings the lifting material stripping plate down, so that the lifting material stripping plate descends to push out the EVA foam waste.
[0014] (III) Beneficial effects The present invention provides an EVA foam punching and cutting machine for automobiles, which has the following beneficial effects: 1. The present invention moves the third driving cylinder, and the piston end of the third driving cylinder brings the fixed outer rod down, and the fixed outer rod brings the movable inner lifting rod down, and the movable inner lifting rod brings the rectangular cutter down through the mounting frame, and the EVA foam is punched and cut by one-third of the thickness, and the servo motor is started, and the output shaft of the servo motor brings the threaded rotating rod to rotate, and because the threaded rotating rod is threadedly connected with the threaded connecting block, the mounting frame brings the rectangular cutter down, and the descending distance is one-third of the thickness of the EVA foam, and the first driving cylinder is started, and the piston end of the first driving cylinder brings the linkage mounting rod down, and the linkage mounting rod brings four vertical lifting rods down, so that the two connecting fixed plates descend, and the descending distance is one-third of the thickness of the EVA foam, and the third driving cylinder is started again, and the rectangular cutter punches the EVA foam, and the EVA foam is punched and cut by one-third of the thickness again, and according to the above method, the remaining one-third of the thickness of the EVA foam is punched, and all the punching work of the EVA foam is completed, and the thicker EVA foam is punched in batches, which effectively alleviates the situation of large bevels.
[0015] 2. In the present invention, the fourth driving cylinder is started, and the piston end of the fourth driving cylinder brings the lifting and stripping plate down, so that the lifting and stripping plate descends to push out the EVA foam waste, and the second driving cylinder is started, and the piston end of the second driving cylinder brings the embedding installation plate up, so that the embedding installation plate can withdraw the finished EVA foam inside the embedding groove. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A schematic diagram of the structure of an EVA foam punching machine for automobiles provided by the present invention from a first perspective; Figure 2 A schematic diagram of the structure of an EVA foam punching and cutting machine for automobiles provided by the present invention from a second viewing angle; Figure 3 A schematic diagram of the structure of an EVA foam punching and cutting machine for automobiles provided by the present invention from a third perspective; Figure 4 A schematic diagram of a horizontal connection plate of an EVA foam punching machine for automobiles provided by the present invention from a first perspective; Figure 5 A schematic diagram of a horizontal connection plate of an EVA foam punching machine for automobiles provided by the present invention from a second viewing angle; Figure 6 A schematic diagram of the internal structure of an installation frame of an EVA foam punching and cutting machine for automobiles provided by the present invention.
[0017] Among them, 1. punching workbench; 2. foam placement table; 3. embedding groove; 4. vertical lifting rod; 5. connecting fixed plate; 6. first driving cylinder; 7. linkage mounting rod; 8. second driving cylinder; 9. embedded mounting plate; 10. L-shaped mounting frame; 11. first fixed plate; 12. horizontal connecting plate body; 13. third driving cylinder; 14. fixed outer rod; 15. movable inner lifting rod; 16. mounting frame; 17. rectangular cutter; 18. servo motor; 19. threaded rotating rod; 20. threaded connecting block; 21. auxiliary connecting frame; 22. installation resistance block; 23. lifting and unloading plate; 24. fourth driving cylinder. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example
[0019] like Figure 1-Figure 6As shown, an embodiment of the present invention provides an EVA foam punching machine for automobiles, comprising a punching workbench 1, a foam placing table 2 is fixedly connected to the upper surface of the punching workbench 1, an embedding groove 3 is opened on the upper surface of the foam placing table 2, a material ejecting assembly is arranged inside the embedding groove 3, and the material ejecting assembly comprises a second driving cylinder 8 fixedly connected to the lower surface of the punching workbench 1, a piston end of the second driving cylinder 8 extends to the inside of the embedding groove 3 and is fixedly connected to an embedding mounting plate 9, and the upper surface of the embedding mounting plate 9 is flush with the inner bottom of the embedding groove 3; Two vertical lifting rods 4 are slidably connected to both sides of the surface of the foam placement table 2. The tops of the two vertical lifting rods 4 on the same side are fixedly connected to a connecting fixing plate 5. The bottoms of the vertical lifting rods 4 pass through the punching workbench 1 and extend to the bottom thereof. A driving assembly for driving the vertical lifting rods 4 to rise and fall is installed at the bottom of the punching workbench 1. The driving assembly includes a first driving cylinder 6 fixedly connected to the bottom of the punching workbench 1. The piston end of the first driving cylinder 6 is fixedly connected to a linkage mounting rod 7. The linkage mounting rod 7 is fixedly connected to the bottom ends of the four vertical lifting rods 4. An L-shaped mounting frame 10 is fixedly connected to the upper surface of the punching workbench 1 and is located at the rear side of the foam placing table 2. The L-shaped mounting frame 10 is connected to a horizontal connecting plate body 12 through a connecting assembly. The connecting assembly includes a first fixing plate 11 fixedly connected to the side wall of the horizontal connecting plate body 12. A second fixing plate is fixedly connected to one side of the top of the L-shaped mounting frame 10. The first fixing plate 11 and the second fixing plate are connected by bolts. The side walls of the first fixing plate 11 and the second fixing plate are provided with matching threaded holes, so that the whole can be disassembled and the rectangular cutter 17 can be replaced; A third driving cylinder 13 is fixedly connected to the upper surface of the horizontal connecting plate body 12, and a fixed outer sleeve rod 14 is fixedly connected to the piston end of the third driving cylinder 13, and a movable inner lifting rod 15 is slidably connected inside the fixed outer sleeve rod 14, and a mounting frame 16 is fixedly connected to the bottom of the movable inner lifting rod 15, and a rectangular cutter 17 is fixedly connected to the bottom of the mounting frame 16, and a lifting assembly, a resistance assembly and a material stripping assembly are installed on the top of the mounting frame 16. The lifting assembly includes a servo motor 18 fixedly connected to the top of the mounting frame 16, and the output shaft of the servo motor 18 is fixedly connected to a threaded rotating rod 19, and the outer surface of the threaded rotating rod 19 is threadedly connected to a threaded connecting block 20, and the threaded connecting block 20 is fixedly connected to the side wall of the fixed outer sleeve rod 14. The resistance assembly includes Two auxiliary connecting frames 21 are symmetrically connected to the top of the mounting frame 16. One end of the auxiliary connecting frame 21 away from the mounting frame 16 is fixedly connected with a mounting resistance block 22. A rubber pad is installed on the lower surface of the mounting resistance block 22. The mounting resistance block 22 is located directly above the corresponding connecting fixed plate 5. The material stripping assembly includes a fourth driving cylinder 24 fixedly connected to the top of the mounting frame 16. The piston end of the fourth driving cylinder 24 extends to the interior of the mounting frame 16 and is fixedly connected with a lifting and stripping plate 23. The lifting and stripping plate 23 is slidably connected to the interior of the mounting frame 16. The fourth driving cylinder 24 is started, and the piston end of the fourth driving cylinder 24 brings the lifting and stripping plate 23 down, so that the lifting and stripping plate 23 descends to push out the EVA foam waste.
[0020] Working principle: When in use, the EVA foam is placed inside the embedding groove 3, and then the third driving cylinder 13 is started. The piston end of the third driving cylinder 13 brings the fixed outer rod 14 down, and the fixed outer rod 14 brings the movable inner lifting rod 15 down. The movable inner lifting rod 15 brings the rectangular cutter 17 down through the mounting frame 16. The rectangular cutter 17 punches the EVA foam. When the mounting frame 16 is dropped, it brings the two auxiliary connecting frames 21 down. The auxiliary connecting frames 21 bring the installation resistance block 22 down, so that the installation resistance block 22 contacts the connection fixing plate 5. At this time, the EVA foam is punched and cut by one-third of the thickness. Then the third driving cylinder 13 is started to retreat, and the third driving cylinder 13 brings the mounting frame 16 up. At the same time, the fourth driving cylinder 24 is started, and the piston end of the fourth driving cylinder 24 brings the lifting stripping plate 23 down, so that the lifting stripping plate 23 is lowered to push out the EVA foam to prevent the EVA foam from rising with the mounting frame 16. Then the servo motor 18 is started again, and the output shaft of the servo motor 18 drives the threaded rotating rod 19 to rotate. Since the threaded rotating rod 19 is threadedly connected to the threaded connecting block 20, the mounting frame 16 brings the rectangular cutter 17 down, and the descending distance is one third of the thickness of the EVA foam. At the same time, Start the first driving cylinder 6, the piston end of the first driving cylinder 6 brings the linkage mounting rod 7 down, the linkage mounting rod 7 brings the four vertical lifting rods 4 down, so that the two connecting fixing plates 5 are lowered, and the lowering distance is one-third of the thickness of the EVA foam, and then start the third driving cylinder 13 again, the piston end of the third driving cylinder 13 brings the fixed outer rod 14 down, the fixed outer rod 14 brings the movable inner lifting rod 15 down, the movable inner lifting rod 15 brings the rectangular cutter 17 down through the mounting frame 16, and the rectangular cutter 17 punches the EVA foam, this time, the EVA foam is punched again by one-third of the thickness; According to the above method, the remaining one-third of the thickness of the EVA foam is punched to complete all the punching work of the EVA foam, so that a rectangular hole is punched out of the EVA foam, and the fourth driving cylinder 24 is started. The piston end of the fourth driving cylinder 24 brings the lifting and stripping plate 23 down, so that the lifting and stripping plate 23 descends to push out the EVA foam waste. The second driving cylinder 8 is started, and the piston end of the second driving cylinder 8 brings the embedding mounting plate 9 up, so that the embedding mounting plate 9 can withdraw the finished EVA foam from the embedding groove 3.
[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprising a reference structure" do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An EVA foam punching machine for automobiles, comprising a punching workbench (1), characterized in that: The upper surface of the punching workbench (1) is fixedly connected to a foam placement table (2), an embedding groove (3) is provided on the upper surface of the foam placement table (2), a material lifting assembly is arranged inside the embedding groove (3), two vertical lifting rods (4) are slidably connected through both sides of the surface of the foam placement table (2), the tops of the two vertical lifting rods (4) located on the same side are fixedly connected to a connecting fixing plate (5), the bottom of the vertical lifting rod (4) passes through the punching workbench (1) and extends to the bottom thereof, a driving assembly for driving the vertical lifting rod (4) to rise and fall is installed at the bottom of the punching workbench (1), and the upper surface of the punching workbench (1) and the foam placement table are located on the upper surface of the punching workbench (1). The rear side of (2) is fixedly connected to an L-shaped mounting frame (10), the L-shaped mounting frame (10) is connected to a horizontal connecting plate body (12) through a connecting assembly, the upper surface of the horizontal connecting plate body (12) is fixedly connected to a third driving cylinder (13), the piston end of the third driving cylinder (13) is fixedly connected to a fixed outer sleeve rod (14), the interior of the fixed outer sleeve rod (14) is slidably connected to a movable inner lifting rod (15), the bottom of the movable inner lifting rod (15) is fixedly connected to a mounting frame (16), the bottom of the mounting frame (16) is fixedly connected to a rectangular cutter (17), and the top of the mounting frame (16) is installed with a lifting assembly, a resistance assembly and a material return assembly.
2. The EVA foam punching machine for automobiles according to claim 1, characterized in that: The ejection assembly comprises a second driving cylinder (8) fixedly connected to the lower surface of the punching workbench (1), the piston end of the second driving cylinder (8) extending into the interior of the embedding groove (3) and fixedly connected to an embedding mounting plate (9), the upper surface of the embedding mounting plate (9) being flush with the inner bottom of the embedding groove (3).
3. The EVA foam punching machine for automobiles according to claim 1, characterized in that: The driving assembly comprises a first driving cylinder (6) fixedly connected to the bottom of the punching workbench (1), the piston end of the first driving cylinder (6) being fixedly connected to a linkage mounting rod (7), and the linkage mounting rod (7) being fixedly connected to the bottom ends of four vertical lifting rods (4).
4. The EVA foam punching machine for automobiles according to claim 1, characterized in that: The connection assembly comprises a first fixing plate (11) fixedly connected to a side wall of a horizontal connecting plate body (12); a second fixing plate is fixedly connected to one side of the top of the L-shaped mounting frame (10); the first fixing plate (11) and the second fixing plate are connected by bolts; and matching threaded holes are provided on the side walls of the first fixing plate (11) and the second fixing plate.
5. The EVA foam punching machine for automobiles according to claim 1, characterized in that: The lifting assembly comprises a servo motor (18) fixedly connected to the top of the mounting frame (16); the output shaft of the servo motor (18) is fixedly connected to a threaded rotating rod (19); the outer surface of the threaded rotating rod (19) is threadedly connected to a threaded connecting block (20); and the threaded connecting block (20) is fixedly connected to the side wall of the fixed outer sleeve rod (14).
6. The EVA foam punching machine for automobiles according to claim 1, characterized in that: The interference assembly comprises two auxiliary connecting frames (21), the two auxiliary connecting frames (21) are symmetrically connected to the top of the mounting frame (16), and one end of the auxiliary connecting frame (21) away from the mounting frame (16) is fixedly connected to a mounting interference block (22).
7. The EVA foam punching machine for automobiles according to claim 6, characterized in that: A rubber pad is installed on the lower surface of the mounting abutment block (22), and the mounting abutment block (22) is located directly above the corresponding connection fixing plate (5).
8. The EVA foam punching machine for automobiles according to claim 1, characterized in that: The material stripping assembly comprises a fourth driving cylinder (24) fixedly connected to the top of the mounting frame (16), a piston end of the fourth driving cylinder (24) extending into the interior of the mounting frame (16) and fixedly connected to a lifting material stripping plate (23), and the lifting material stripping plate (23) is slidably connected to the interior of the mounting frame (16).