Strip plastic bending mechanism

Abstract

The utility model relates to the field of plastic bending, specifically relates to a strip plastic bending mechanism, include: the machine table, its one side is provided with the through slot, the support is fixed on the machine table, and the both sides symmetry of support slide installation have slider no.

Description

Technical Field

[0001] This utility model relates to the field of plastic bending, and more particularly to a strip-shaped plastic bending mechanism. Background Technology

[0002] In the field of plastic product processing, it is often necessary to bend strips of plastic to form components with specific angles or shapes. Currently, the bending of strips of plastic usually involves heating and softening them before bending.

[0003] Existing bending equipment or methods have some shortcomings. The heating process often uses heaters with fixed positions. If the heaters are not removed in time after the plastic softens and begins to bend, they will continue to heat the bent part, causing the part to soften excessively. This affects the accuracy of the bending angle and the shaping effect after the plastic cools and hardens. It may even cause the workpiece to be burned or deformed. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a strip-shaped plastic bending mechanism to solve the technical problems in the prior art.

[0005] To achieve the above objectives, this utility model provides a strip-shaped plastic bending mechanism, comprising: The machine base has a through slot on one side; A bracket fixed to the machine base, with sliders symmetrically slidably mounted on both sides of the bracket; A lifting plate is fixed between the two sliders, and a bending plate is fixed to the bottom of the lifting plate, with an extension end integrally formed on the side of the bending plate away from the through groove. An electric cylinder fixed to the top of the bracket has its output end passing through the bracket and fixed to the top surface of the lifting plate; Assembly slots are provided at both ends of the machine tool, and a movable plate slides in the assembly slots. The top of the movable plate is fixed to the bottom of an adjacent slider. A guide groove is provided on the side of the movable plate near the lifting plate, and a guide pin is slidably installed inside the guide groove. The second slider, fixed to one end of the guide pin, has its top wall slidably mounted on the bottom of the machine base. An infrared heater is fixedly installed between the two adjacent sides of the second slider, and there is a preset gap between the infrared heater and the bottom of the machine base.

[0006] Preferably, the guide groove is inclinedly formed on the side wall of the moving plate near the lifting plate, and the guide groove extends from bottom to top in a direction away from the through groove.

[0007] Preferably, the bottom of the bent plate is a rounded surface.

[0008] Preferably, the bending mechanism further includes: An L-shaped mounting bracket is fixed to the top surface of the extended end of the bent plate. The L-shaped mounting bracket has several mounting holes equidistantly provided, and a movable rod passes through the mounting holes. A pressure plate is fixed between the bottoms of several movable rods, and the pressure plate is arranged parallel to the top surface of the machine base; A first spring is fitted onto the surface of each of the movable rods, with one end of the first spring fixedly connected to the top surface of the pressure plate and the other end fixedly connected to the bottom surface of the horizontal section of the L-shaped mounting bracket.

[0009] Preferably, the bending mechanism further includes: A push rod fixed to one side of the slider, and a positioning block located on one side of the push rod, the positioning block being fixedly installed on the top surface of the machine tool; A pressure rod that moves horizontally through the positioning block is fitted with a second spring on its surface, and the two ends of the second spring are respectively fixedly connected between the end face of one end of the pressure rod and one side wall of the positioning block. A metal frame is fixedly connected to the other end of the pressure rod, and a magnetic block is detachably mounted on the surface of the metal frame; A tray is fixedly installed between the two magnetic blocks, and the top surface of the tray is flush with the top surface of the machine base.

[0010] Preferably, the bottom of the push rod is provided with a circular end face, and the end of the pressure rod near the push rod is provided with an inclined surface that matches the circular end face.

[0011] Preferably, the metal frame is made of 430 stainless steel.

[0012] Preferably, the bending mechanism further includes: A movable slot is provided on the other side of the machine tool. A connecting rod is fixedly installed horizontally in the movable slot, and a sliding sleeve is slidably installed on the surface of the connecting rod. A positioning plate is fixed on the top of the sliding sleeve. A third spring is fitted onto the surface of the connecting rod, with its two ends fixed to one side of the sliding sleeve and the inner wall of the moving groove, respectively.

[0013] The beneficial effects of this utility model are as follows: By adopting a strip-shaped plastic bending mechanism of this utility model, and by setting up a moving plate, guide groove, guide pin and slider, the downward pressing motion of the bending plate is accurately converted into the horizontal retraction motion of the infrared heater. This ensures that at the critical moment when bending begins after the plastic has softened, the heat source can automatically and timely move away from the workpiece. This effectively avoids the problem of excessive softening, deformation or affecting the shaping accuracy of the bent area due to continuous heating, and ensures the consistency of the bending angle and product quality. The tray is installed between the metal frames by magnetic adsorption, which allows the position of the tray to be flexibly and conveniently adjusted according to different bending requirements, making it highly adaptable. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a schematic diagram of the main cross-section of the present invention; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a top sectional view of the present invention; Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point B; Figure 6 This is a bottom view of the present invention; Figure 7 This is a partial structural diagram of the lifting plate, moving plate, and pallet of this utility model.

[0016] The diagram is marked as follows: 1. Machine base; 101. Through slot; 102. Moving slot; 2. Support; 3. Slider 1; 4. Lifting plate; 5. Electric cylinder; 6. Bending plate; 7. Moving plate; 701. Guide slot; 8. Guide pin; 9. Slider 2; 10. Infrared heater; 11. L-shaped mounting bracket; 12. Movable rod; 13. Pressure plate; 1301. First spring; 14. Push rod; 15. Positioning block; 16. Pressure rod; 17. Second spring; 18. Metal frame; 19. Magnetic block; 20. Support plate; 21. Connecting rod; 22. Sliding sleeve; 23. Positioning plate; 24. Third spring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0018] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] The first aspect of this utility model proposes a strip-shaped plastic bending mechanism, such as... Figure 1-7 As shown, it includes: The machine base 1 has a through groove 101 on one side; A bracket 2 is fixed on the machine base 1, and sliders 3 are symmetrically slidably installed on both sides of the bracket 2; A lifting plate 4 is fixed between two sliders 3. A bending plate 6 is fixed at the bottom of the lifting plate 4. The side of the bending plate 6 away from the through groove 101 has an integrally formed extension end, so that the bending plate 6 forms a T-shaped structure. An electric cylinder 5 is fixed to the top of the bracket 2, and its output end passes through the bracket 2 and is fixed to the top surface of the lifting plate 4; the bracket 2 has a through hole in the middle, and the output end of the electric cylinder 5 is fixed to the top of the lifting plate 4 through the through hole.

[0020] Assembly slots are provided at both ends of the machine base 1, and a movable plate 7 slides in the assembly slots. The top of the movable plate 7 is fixed to the bottom of the adjacent slider 3. A guide groove 701 is provided on the side of the movable plate 7 near the lifting plate 4, and a guide pin 8 is slidably installed inside the guide groove 701. A slider 2 9, fixed to one end of the guide pin 8, is slidably mounted on the bottom of the machine base 1. An infrared heater 10 is fixedly mounted between adjacent sides of the two sliders 2 9, and there is a preset gap between the infrared heater 10 and the bottom of the machine base 1. The power of the infrared heater 10 is adjustable. When the infrared heater 10 is in the initial position, it is located on one side of the through groove 101, used to soften the plastic. After placing multiple strips of plastic on the machine base 1, the infrared heater 10 is activated to preheat and soften the strips of plastic. When the strips of plastic are softened to the point where they can be bent, the electric cylinder 5 is activated. The output end of the electric cylinder 5 pushes the bending plate 6 at the bottom of the lifting plate 4 to move downward, bending the strips of plastic. As the bending plate 6 moves downward, the sliders 3 at both ends of the lifting plate 4 drive the moving plate 7 to descend vertically. This causes the sliders 9 at both ends of the infrared heater 10 to move through the guide pins 8 in the guide groove 701 of the moving plate 7, which in turn causes the infrared heater 10 to move horizontally away from the through groove 101. At this time, the infrared heater 10 automatically moves away from the bottom of the strips of plastic to be bent, which facilitates the hardening and shaping of the strips of plastic after bending.

[0021] In this embodiment, the guide groove 701 is inclinedly formed on the side wall of the movable plate 7 near the lifting plate 4, and the guide groove 701 extends from bottom to top in a direction away from the through groove 101, with an inclination angle of 45 degrees. This allows the movable plate 7 to move with the slider 3, and through the sliding of the guide pin 8 within the guide groove 701, drive the slider 9 and the infrared heater 10 to move horizontally, moving them out of the position below the strip of plastic. This achieves automatic adjustment of the heating position and prevents the infrared heater 10 from continuously preheating the strip of plastic after it has been bent.

[0022] In this embodiment, the bottom of the bending plate 6 is designed as a rounded surface. This prevents indentations from forming on the strip of plastic during bending when the bottom of the bending plate 6 contacts the surface of the strip.

[0023] In this embodiment, the bending mechanism further includes: An L-shaped mounting bracket 11 is fixed to the top surface of the extended end of the bending plate 6. Several assembly holes are equally spaced on the L-shaped mounting bracket 11, and a movable rod 12 passes through the assembly holes. A pressure plate 13 is fixed between the bottoms of several movable rods 12. The pressure plate 13 is parallel to the top surface of the machine base 1, and the distance between the pressure plate 13 and the top surface of the machine base 1 is less than the distance between the bottom of the bending plate 6 and the top surface of the machine base 1. A first spring 1301 is fitted onto the surface of each movable rod 12. One end of the first spring 1301 is fixedly connected to the top surface of the pressure plate 13, and the other end is fixedly connected to the bottom surface of the horizontal section of the L-shaped mounting bracket 11. During the bending process, the pressure plate 13 first contacts the strip of plastic and presses it firmly onto the machine base 1 to prevent the plastic from shifting and ensure bending accuracy.

[0024] In this embodiment, the bending mechanism further includes: A push rod 14 is fixed to one side of the slider 3, and a positioning block 15 is collinear with the push rod 14 in the vertical direction. The positioning block 15 is fixedly installed on the top surface of the machine base 1. A pressure rod 16 moves horizontally through the positioning block 15. A second spring 17 is fitted on the surface of the pressure rod 16, and the two ends of the second spring 17 are respectively fixedly connected between the end face of one end of the pressure rod 16 and one side wall of the positioning block 15. A metal frame 18 is fixedly connected to the other end of the pressure rod 16, and a magnetic block 19 is detachably mounted on the surface of the metal frame 18; A tray 20 is fixedly installed between two magnetic blocks 19, with its top surface flush with the top surface of the machine base 1. When the distance of the tray 20 needs to be adjusted according to the different bending positions of the strip plastic, the tray 20 is manually pushed, causing it to move between the two metal frames 18 via the magnetic blocks 19 at both ends. When the tray 20 moves to the desired position, the magnetic blocks 19 stably attach the tray 20 between the two metal frames 18, supporting the end of the strip plastic and preventing it from softening and sagging after heating. Furthermore, when the bending plate 6 is about to contact the strip plastic as it moves downward, the push rod 14 on the slider 3 pushes the pressure rod 16 to move horizontally by descending and squeezing. This causes the pressure rod 16 to move the support plate 20 on the metal frame 18 laterally away from the strip plastic. The support plate 20 automatically releases its support for the end of the strip plastic. As the support plate 20 moves away quickly, the bending plate 6 continues to move downward to bend the strip plastic, thus preventing the support plate 20 from affecting the bending of the strip plastic during the bending process of the bending plate 6.

[0025] In this embodiment: the bottom of the push rod 14 is provided with a circular end face, and the end of the pressure rod 16 near the push rod 14 is provided with an inclined surface adapted to the circular end face. This allows the push rod 14 to push the pressure rod 16 to move horizontally when it descends.

[0026] In this embodiment, the metal frame 18 is made of 430 stainless steel. This ensures a stable adsorption fit with the magnet 19 and facilitates the disassembly and repositioning of the magnet 19.

[0027] In this embodiment, the bending mechanism further includes: A movable slot 102 is provided on the other side of the machine tool 1. A connecting rod 21 is fixedly installed in the movable slot 102 in the horizontal direction, and a sliding sleeve 22 is slidably installed on the surface of the connecting rod 21. A positioning plate 23 is fixed on the top of the sliding sleeve 22. A third spring 24 is fitted onto the surface of the connecting rod 21. The two ends of the third spring 24 are fixed to one side of the sliding sleeve 22 and the inner wall of the moving groove 102, respectively.

[0028] Multiple strips of plastic are placed side by side on the machine base 1. By pushing the positioning plate 23, the positioning plate 23 is moved closer to the strips of plastic, so that one end of the strips of plastic abuts against one side of the positioning plate 23, and the multiple strips of plastic are aligned, thereby ensuring that the plastic is accurately positioned before bending. By continuing to push, when the other end of the strips of plastic moves to the surface of the tray 20 at the preset position, the pushing of the positioning plate 23 is stopped. At this time, the third spring 24 elastically resets, driving the positioning plate 23 to move and reset, making it easy to reuse.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0030] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A strip-shaped plastic bending mechanism, characterized in that, include: The machine base (1) has a through slot (101) on one side. A bracket (2) is fixed on the machine base (1), and sliders (3) are symmetrically slidably installed on both sides of the bracket (2). A lifting plate (4) is fixed between the two sliders (3), and a bending plate (6) is fixed at the bottom of the lifting plate (4), and an extension end is integrally formed on the side of the bending plate (6) away from the through groove (101). An electric cylinder (5) fixed to the top of the bracket (2) has its output end passing through the bracket (2) and fixed to the top surface of the lifting plate (4); Assembly slots are provided at both ends of the machine base (1), and a movable plate (7) slides in the assembly slots. The top of the movable plate (7) is fixed to the bottom of the adjacent slider (3). A guide groove (701) is provided on the side of the movable plate (7) near the lifting plate (4), and a guide pin (8) is slidably installed inside the guide groove (701). The second slider (9) fixed to one end of the guide pin (8) has its top wall slidably installed on the bottom of the machine base (1). An infrared heater (10) is fixedly installed between the two adjacent sides of the second slider (9), and there is a preset gap between the infrared heater (10) and the bottom of the machine base (1).

2. The strip-shaped plastic bending mechanism according to claim 1, characterized in that, The guide groove (701) is inclinedly opened on the side wall of the moving plate (7) near the lifting plate (4), and the guide groove (701) extends from bottom to top in a direction away from the through groove (101).

3. The strip-shaped plastic bending mechanism according to claim 2, characterized in that, The bottom of the bending plate (6) is set as an arc surface.

4. The strip-shaped plastic bending mechanism according to claim 1, characterized in that, The bending mechanism further includes: An L-shaped mounting bracket (11) is fixed to the top surface of the extended end of the bending plate (6). The L-shaped mounting bracket (11) has several mounting holes equidistantly provided, and a movable rod (12) passes through the mounting holes. A pressure plate (13) is fixed between the bottoms of several movable rods (12), and the pressure plate (13) is arranged parallel to the top surface of the machine base (1); A first spring (1301) is fitted onto the surface of each of the movable rods (12). One end of the first spring (1301) is fixedly connected to the top surface of the pressure plate (13), and the other end is fixedly connected to the bottom surface of the horizontal section of the L-shaped mounting bracket (11).

5. A strip-shaped plastic bending mechanism according to claim 4, characterized in that, The bending mechanism further includes: A push rod (14) fixed to one side of the slider (3), and a positioning block (15) located on one side of the push rod (14), the positioning block (15) being fixedly installed on the top surface of the machine base (1); A pressure rod (16) that moves horizontally through the positioning block (15) is fitted with a second spring (17), and the two ends of the second spring (17) are respectively fixedly connected between the end face of one end of the pressure rod (16) and the side wall of the positioning block (15). A metal frame (18) is fixedly connected to the other end of the pressure rod (16), and a magnetic block (19) is detachably installed on the surface of the metal frame (18). A tray (20) is fixedly installed between the two magnetic blocks (19), and the top surface of the tray (20) is flush with the top surface of the machine base (1).

6. A strip-shaped plastic bending mechanism according to claim 5, characterized in that, The bottom of the push rod (14) is provided with a circular end face, and the end of the pressure rod (16) near the push rod (14) is provided with an inclined surface that matches the circular end face.

7. A strip-shaped plastic bending mechanism according to claim 5, characterized in that, The metal frame (18) is made of 430 stainless steel.

8. A strip-shaped plastic bending mechanism according to claim 1, characterized in that, The bending mechanism further includes: A moving slot (102) is opened on the other side of the machine (1). A connecting rod (21) is fixedly installed in the moving slot (102) in the horizontal direction, and a sliding sleeve (22) is slidably installed on the surface of the connecting rod (21). A positioning plate (23) is fixed on the top of the sliding sleeve (22). A third spring (24) is fitted onto the surface of the connecting rod (21), and the two ends of the third spring (24) are respectively fixed to one side of the sliding sleeve (22) and the inner wall of the moving groove (102).

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