Plastic bucket die assembly burr cutting device

Abstract

The invention relates to a plastic barrel mold closing burr cutting device which comprises a rack, at least three sets of centering rollers are arranged on the rack, the upper end and the bottom end of the rack are each provided with a slope grinding set, each slope grinding set comprises a second sliding block, a plate with a rack is arranged on the second sliding block in a sliding mode, and the plate with the rack is fixed to the second sliding block through a locking bolt. And a polishing roller capable of changing the angle is arranged at the end part of the rack plate. The slope grinding set can adapt to the slope angle of the plastic bucket, the grinding roller is attached to the slope of the plastic bucket, so that burrs of the plastic bucket are rotationally ground, the burr cutting effect is achieved, the slope grinding set can further adapt to the plastic buckets of different specifications, and the effect that one mold is suitable for multiple products is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of flash processing, and in particular relates to a plastic barrel mold flash cutting device. Background Art

[0002] After the plastic barrel is blow-molded, a mold flash will remain at its generatrix. This residual flash needs to be trimmed to improve the appearance of the plastic barrel.

[0003] Conventional plastic barrels are cylindrical in the middle and conical in the bottom and mouth. Due to the shape of the plastic barrel, conventional rotary cutting or grinding cannot be used to remove the flash residue at the mold joint.

[0004] Some factories make molds that match the shape of plastic barrels, and cut the edges of the plastic barrels by horizontally moving the molds to complete the cutting of the burrs. However, this method requires making different special molds for plastic barrels of different specifications, and there are many types of molds, which is costly. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a plastic bucket mold closing and flash cutting device, which at least partially solves the above problem.

[0006] The technical solution adopted by the present invention is as follows: a plastic barrel mold closing and burr cutting device proposed by the present invention comprises a stand, the stand is provided with centering rollers, the centering rollers are at least three groups, so as to position the central axis of the plastic barrel, one of the centering rollers is movably connected to the stand and used for cutting the vertical surface burr of the plastic barrel, and the other centering rollers are rotatably arranged on the stand; Furthermore, a synchronous wheel is provided at the bottom end of the centering roller rotatably arranged on the stand, a motor is provided on the back of the stand, and a belt is connected between the synchronous wheel and the output shaft of the motor.

[0007] Furthermore, a clamping and stopping mechanism is provided at the side end of the stand, and the movably connected centering roller is rotatably arranged on the clamping and stopping mechanism, and the clamping and stopping mechanism can change the position of the centering roller.

[0008] Furthermore, the pressing and stopping mechanism includes a ratchet assembly, a belt fork bracket and a side plate, the side plate is fixed to the side wall of the platform, the belt fork bracket is rotatably arranged on the platform, a second spring is connected between the belt fork bracket and the side plate, the second spring always pulls the belt fork bracket toward the side plate, the movably connected centering roller is rotatably arranged on the belt fork bracket, and the ratchet assembly is arranged on the shaft where the belt fork bracket and the platform are hinged; Further, the ratchet assembly includes a lower ratchet, an upper ratchet and a transverse plate, the lower ratchet is fixed on a shaft hinged between the fork bracket and the stand, the transverse plate is arranged on the side wall of the stand above the lower ratchet, and the upper ratchet is arranged in the transverse plate to slide up and down; Furthermore, the upper ratchet is coaxial with the lower ratchet, and the upper ratchet cannot rotate, and a spring three is connected between the upper ratchet and the transverse plate; Furthermore, in order to facilitate the separation of the upper ratchet and the lower ratchet, a pulling plate is provided at the top end of the upper ratchet.

[0009] Furthermore, a group of slope grinding groups are respectively provided at the upper end and the bottom end of the stand, and the two groups of slope grinding groups are respectively used to trim the bottom slope and the opening slope of the plastic barrel. The slope grinding group includes a second slider, and the second slider is arranged on the stand. The second slider in the slope grinding group at the upper end of the stand slides longitudinally in the middle of the upper wall of the stand, and the second slider in the slope grinding group at the lower end of the stand is fixed to the bottom end of the stand; Furthermore, a rack plate is slidably provided on the slider 2, the rack plate at the upper end is vertically arranged, and the rack plate at the lower end is horizontally arranged; Furthermore, the rack plate is fixed to the slider 2 by a locking bolt so that the rack plate after adjusting the position is fixed to the slider 2, and a grinding roller capable of changing the angle is provided at the end of the rack plate; Furthermore, in order to connect the grinding roller, the end of the rack plate provided at the lower end is hinged with a fork frame 1, a tension spring is connected between the fork frame 1 and the rack plate, and the grinding roller located at the lower end of the stand is rotatably provided in the middle of the fork frame 1; Furthermore, the end of the rack plate arranged at the upper end is hinged with a fork frame 2, and the fork frame 2 and the rack plate are also connected by a tension spring. The grinding roller located at the upper end of the frame is rotatably arranged at the end of the fork frame 2, and in order to prevent the fork frame 2 from interfering with the mouth of the plastic barrel, the end of the grinding roller at the upper end of the frame protrudes from the end of the fork frame 2.

[0010] Furthermore, a slider 1 is slidably provided in the middle of the bottom end of the stand, a center wheel is rotatably provided in the slider 1, and a spring 1 is connected between the slider 1 and the stand.

[0011] The beneficial effects achieved by the present invention using the above structure are as follows: the slope grinding group can adapt to the slope angle of the plastic barrel, and through the cooperation of the rack plate and the fork frame one or the fork frame two, the grinding roller is fitted on the inclined surface of the plastic barrel, thereby rotating and grinding the burr edge to achieve the effect of trimming the burr edge. The slope grinding group can also adapt to plastic barrels of different specifications, achieving the effect of one mold being suitable for multiple products. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1This is a structural schematic diagram of a plastic barrel mold closing and cutting device according to an embodiment of the present invention; Figure 2 for Figure 1 Bottom view of Figure 3 It is an exploded view of the pressing and stopping mechanism; Figure 4 It is a state diagram of the pressing and stopping mechanism; Figure 5 This is a positional relationship diagram of the slope grinding group and the lower end grinding roller; Figure 6 This is a positional relationship diagram of the slope grinding group and the upper grinding roller; Figure 7 Schematic diagram of the working principle when a plastic barrel is cut.

[0013] Among them, 1. stand, 2. centering roller, 3. clamping and stopping mechanism, 4. slope grinding group, 5. center wheel, 6. slider one, 7. spring one, 8. synchronous wheel, 9. belt, 10. motor, 11. fork bracket, 12. side plate, 13. spring two, 14. lower ratchet, 15. upper ratchet, 16. spring three, 17. cross plate, 18. pulling plate, 19. slider two, 20. rack plate, 21. locking bolt, 22. tension spring, 23. fork bracket one, 24. grinding roller, 25. fork bracket two.

[0014] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0016] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0017] like Figure 1As shown, a device for cutting the burr of a plastic barrel mold is proposed in an embodiment of the present invention, comprising a stand 1, on which are provided centering rollers 2, and at least three groups of centering rollers 2. When working, the centering rollers 2 are tangent to the cylindrical surface in the middle of the plastic barrel so as to position the central axis of the plastic barrel. One of the centering rollers 2 is movably connected to the stand 1 and is used for cutting the burr of the vertical surface of the plastic barrel, and the remaining centering rollers 2 are rotatably arranged on the stand 1.

[0018] like Figure 2 As shown, a synchronous wheel 8 is provided at the bottom end of the centering roller 2 rotatably arranged on the stand 1, a motor 10 is provided on the back of the stand 1, and a belt 9 is connected to the synchronous wheel 8 and the output shaft of the motor 10. When the motor 10 is working, the centering roller 2 rotating on the stand 1 is driven by the belt 9 to rotate. When the centering roller 2 rotates, it drives the plastic barrel to rotate, that is, the centering roller 2 serves as an active wheel to input power, and the centering roller 2 movably connected to the stand 1 does not provide power. Each group of centering rollers 2 grinds the cylindrical surface in the middle of the plastic barrel to cut the edge.

[0019] like Figure 1 As shown, a clamping and stopping mechanism 3 is provided at the side end of the stand 1, and a movably connected centering roller 2 is rotatably arranged on the clamping and stopping mechanism 3. The clamping and stopping mechanism 3 can change the position of the centering roller 2. When installing the plastic barrel, the clamping and stopping mechanism 3 opens the centering roller 2 for installation. After the plastic barrel is installed, the clamping and stopping mechanism 3 fixes the centering roller 2 on the plastic barrel, and can also prevent the centering roller 2 from jumping when the plastic barrel rotates, so that the centering roller 2 is always in contact with the plastic barrel for grinding.

[0020] like Figure 3 and Figure 4 As shown, the pressing and stopping mechanism 3 includes a ratchet assembly, a fork bracket 11 and a side plate 12, the side plate 12 is fixed to the side wall of the stand 1, the fork bracket 11 is rotatably arranged on the stand 1, a spring 2 13 is connected between the fork bracket 11 and the side plate 12, the spring 2 13 always pulls the fork bracket 11 toward the side plate 12, the movably connected centering roller 2 is rotatably arranged on the fork bracket 11, the ratchet assembly is arranged on the axis hinged between the fork bracket 11 and the stand 1, the ratchet assembly enables the fork bracket 11 to rotate only toward the center of the plastic barrel, when the ratchet assembly is separated from the fork bracket 11, the spring 2 13 pulls the fork bracket 11 toward the side plate 12, so that the movably connected centering roller 2 is separated from the plastic barrel, when the ratchet assembly is connected to the fork bracket 11, the spring 2 13 cannot pull the fork bracket 11, so that the centering roller 2 is always in contact with the plastic barrel; The ratchet assembly includes a lower ratchet 14, an upper ratchet 15 and a transverse plate 17. The lower ratchet 14 is fixed to an axis (not shown in the drawings) at which the fork bracket 11 and the stand 1 are hinged. The lower ratchet 14 rotates with the fork bracket 11. The transverse plate 17 is disposed on the side wall of the stand 1 above the lower ratchet 14. The upper ratchet 15 is disposed in the transverse plate 17 to slide up and down. The upper ratchet 15 is coaxial with the lower ratchet 14, and the upper ratchet 15 cannot rotate. A spring 3 16 is connected between the upper ratchet 15 and the cross plate 17. When the upper ratchet 15 and the lower ratchet 14 are connected and meshed, the lower ratchet 14 can only rotate in one direction relative to the upper ratchet 15. In this device, the lower ratchet 14 can only rotate in the direction of the plastic barrel. When the lower ratchet 14 rotates, the upper ratchet 15 is periodically pushed up by the ratchet teeth of the lower ratchet 14, and then the upper ratchet 15 is pressed down by the spring 3 16, so that the upper ratchet 15 and the lower ratchet 14 are meshed again. In order to facilitate the separation of the upper ratchet 15 and the lower ratchet 14 , a pulling plate 18 is provided at the top end of the upper ratchet 15 .

[0021] like Figure 1 , Figure 5 and Figure 6 As shown, a group of slope grinding groups 4 are respectively provided at the upper end and the bottom end of the stand 1, and the two groups of slope grinding groups 4 are respectively used to trim the bottom slope and the opening slope of the plastic barrel. The slope grinding group 4 includes a second slider 19, and the second slider 19 is arranged on the stand 1. The second slider 19 in the slope grinding group 4 at the upper end of the stand 1 slides longitudinally in the middle of the upper wall of the stand 1, and the second slider 19 in the slope grinding group 4 at the lower end of the stand 1 is fixed to the bottom end of the stand 1; A rack plate 20 is slidably disposed on the slider 2 19 , the rack plate 20 at the upper end is vertically disposed, and the rack plate 20 at the lower end is horizontally disposed; The rack plate 20 is fixed to the slider 19 by a locking bolt 21, so that the rack plate 20 after adjusting the position is fixed on the slider 19, and a grinding roller 24 capable of changing the angle is provided at the end of the rack plate 20; In order to connect the grinding roller 24, a fork frame 23 is hinged at the end of the rack plate 20 at the lower end, and a tension spring 22 is connected between the fork frame 23 and the rack plate 20. The grinding roller 24 at the lower end of the stand 1 is rotated and arranged in the middle of the fork frame 23. The tension spring 22 always pulls the fork frame 23 toward the rack plate 20, so that the lower end of the grinding roller 24 on the fork frame 23 is close to the bottom slope of the plastic barrel, so that the grinding roller 24 is completely attached to the plastic barrel; The end of the rack plate 20 arranged at the upper end is hinged with a fork frame 25, and the fork frame 25 and the rack plate 20 are also connected by a tension spring 22. The grinding roller 24 located at the upper end of the stand 1 is rotatably arranged on the end of the fork frame 25, and in order to prevent the fork frame 25 from interfering with the plastic barrel mouth, the end of the grinding roller 24 at the upper end of the stand 1 protrudes from the end of the fork frame 25, and the end of the grinding roller 24 is close to the root of the barrel mouth. In order to make the grinding roller 24 fit the position of the plastic barrel mouth, it is only necessary to slide the rack plate 20 in the upper end slider 19 up and down to change the height of the rack plate 20, thereby adjusting the height of the grinding roller 24. After the above adjustment, the grinding rollers 24 at the upper and lower ends are both in contact with the inclined surface of the plastic barrel, such as Figure 7 As shown, the centering roller 2 also fits with the cylindrical surface of the plastic barrel to facilitate subsequent grinding and cutting of the edge; it should be noted that the barrel mouth is a cylindrical rotating motion, and an appropriate grinding roller 24 can be installed at any position, which will not be repeated here.

[0022] like Figure 1 and Figure 2 As shown, a slider 6 is slidably provided in the middle of the bottom end of the stand 1, and a center wheel 5 is rotatably provided in the slider 6. A spring 7 is connected between the slider 6 and the stand 1. The positions of the center shafts of plastic barrels of different specifications are also different, and the center wheel 5 can automatically center and adapt without separate adjustment. When the center wheel 5 is eccentric, the friction force it receives is decomposed into two directions, vertical and horizontal. The horizontal force is hindered and cannot move, and the vertical force will cause it to move toward the axis until the axis of the center wheel 5 coincides with the axis of the plastic barrel.

[0023] During the specific operation, first pull up the pulling plate 18, the upper ratchet 15 compresses the spring three 16 and moves upward, the upper ratchet 15 is separated from the lower ratchet 14, and the lower ratchet 14 can rotate arbitrarily, that is, the fork bracket 11 can also rotate arbitrarily, and the spring two 13 pulls the fork bracket 11 toward the side plate 12 to provide space for the installation of the plastic barrel.

[0024] After placing the plastic barrel on the synchronous wheel 8, lower the pulling plate 18. The upper ratchet 15 moves downward under the action of spring three 16 and re-engages with the lower ratchet 14. At this time, the lower ratchet 14 can only rotate toward the center of the stand 1. Push the fork bracket 11 by hand to make the centering roller 2 on the fork bracket 11 fit on the cylindrical surface of the plastic barrel. After releasing your hand, the fork bracket 11 can no longer be pulled in the opposite direction by spring two 13, and the three sets of centering rollers 2 are tangent to the plastic barrel again, thereby fixing the plastic barrel.

[0025] After installing the plastic barrel, first adjust the slope grinding group 4 below.

[0026] Loosen the locking bolt 21 on the lower end slider 19, adjust the position of the lower end rack plate 20, so that the grinding roller 24 contacts the lower end of the plastic barrel, and the tension spring 22 pulls the fork frame 23, so that the grinding roller 24 at the lower end of the fork frame 23 fits tightly with the inclined surface, and then re-tighten the locking bolt 21, at which time the grinding roller 24 fits tightly with the lower end of the plastic barrel.

[0027] Then adjust the upper slope grinding group 4, and use the same method to adjust the position of the upper rack plate 20, thereby adjusting the height of the grinding roller 24 at the lower end of the rack plate 20. This grinding roller 24 also fits with the slope of the upper end of the plastic barrel under the action of the tension spring 22, and the end of the grinding roller 24 is close to the root of the upper opening of the plastic barrel.

[0028] Then start the motor 10, which drives the synchronous wheel 8 to rotate through the belt 9, and the synchronous wheel 8 drives the centering roller 2 to rotate, and the centering roller 2 drives the plastic barrel to rotate. At this time, the centering roller 2 on the fork bracket 11 grinds the cylindrical surface of the plastic barrel and trims the burrs on the cylindrical surface, and the grinding rollers 24 at the upper and lower ends grind the conical surfaces of the upper and lower ends of the plastic barrel and trim the burrs on the conical surfaces.

[0029] At the same time, when the plastic barrel rotates, the center wheel 5 will be subjected to a certain friction force, which is decomposed into two directions: vertical and horizontal. The horizontal force is hindered by the stand 1 and cannot move, and the vertical force will cause it to move toward the axis until the axis of the center wheel 5 coincides with the axis of the plastic barrel.

[0030] When the flash grinding is completed, pull up the drawing plate 18, and after the fork bracket 11 is pulled toward the side plate 12 by the spring 2 13, take out the plastic barrel and put it into the next plastic barrel to be processed.

[0031] 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.

[0032] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A plastic barrel mold closing and cutting device, comprising a stand (1), characterized in that: Also includes: Centering rollers (2) for positioning the plastic barrel, the centering rollers (2) being at least three, one of which is movably connected to the stand (1) and is used for trimming the vertical surface of the plastic barrel, and the remaining centering rollers (2) are rotated on the stand (1); Two groups of slope grinding groups (4) are respectively arranged at the upper end and the lower end of the platform (1), and the slope grinding group (4) includes a second slider (19) arranged on the platform (1), the second slider (19) at the upper end slides longitudinally in the middle of the upper wall of the platform (1), and the second slider (19) at the lower end is fixed to the bottom end of the platform (1), and a rack plate (20) is slidably provided on the second slider (19), the rack plate (20) at the upper end is vertically arranged, and the rack plate (20) at the lower end is horizontally arranged, and the rack plate (20) is fixed to the second slider (19) by a locking bolt (21), and a grinding roller (24) capable of changing its angle is provided at the end of the rack plate (20).

2. The plastic barrel mold closing and flash cutting device according to claim 1, characterized in that: The end of the rack plate (20) arranged at the lower end is hinged with a fork frame 1 (23), a tension spring (22) is connected between the fork frame 1 (23) and the rack plate (20), and the grinding roller (24) located at the lower end of the stand (1) is rotatably arranged in the middle of the fork frame 1 (23).

3. The plastic barrel mold closing and flash cutting device according to claim 1, characterized in that: The end of the rack plate (20) disposed at the upper end is hingedly connected to a fork frame 2 (25), and the fork frame 2 (25) and the rack plate (20) are also connected via a tension spring (22). The grinding roller (24) located at the upper end of the stand (1) is rotatably disposed at the end of the fork frame 2 (25), and the end of the grinding roller (24) at the upper end of the stand (1) protrudes from the end of the fork frame 2 (25).

4. The plastic barrel mold closing and flash cutting device according to claim 1, characterized in that: A pressing and stopping mechanism (3) is provided at the side end of the stand (1), and the movably connected centering roller (2) is rotatably arranged on the pressing and stopping mechanism (3).

5. The plastic barrel mold closing and flash cutting device according to claim 4, characterized in that: The clamping and anti-retraction mechanism (3) comprises a ratchet assembly, a belt fork bracket (11) and a side plate (12); the side plate (12) is fixed to the side wall of the platform (1); the belt fork bracket (11) is rotatably mounted on the platform (1); a second spring (13) is connected between the belt fork bracket (11) and the side plate (12); the movably connected centering roller (2) is rotatably mounted on the belt fork bracket (11); and the ratchet assembly is arranged on a shaft hinged between the belt fork bracket (11) and the platform (1).

6. The plastic barrel mold closing and flash cutting device according to claim 5, characterized in that: The ratchet assembly comprises a lower ratchet (14), an upper ratchet (15) and a transverse plate (17); the lower ratchet (14) is fixed on a shaft hinged between a fork bracket (11) and a stand (1); the transverse plate (17) is arranged on a side wall of the stand (1) in an area above the lower ratchet (14); the upper ratchet (15) is arranged in the transverse plate (17) to slide up and down; the upper ratchet (15) is coaxial with the lower ratchet (14); the upper ratchet (15) is non-rotatable; and a spring (16) is connected between the upper ratchet (15) and the transverse plate (17).

7. The plastic barrel mold closing and flash cutting device according to claim 6, characterized in that: A drawing plate (18) is provided at the top end of the upper ratchet (15).

8. The plastic barrel mold closing and flash cutting device according to claim 1, characterized in that: A slider (6) is slidably provided at the middle of the bottom end of the stand (1), a center wheel (5) is rotatably provided in the slider (6), and a spring (7) is connected between the slider (6) and the stand (1).

9. The plastic barrel mold closing and flash cutting device according to claim 1, characterized in that: A synchronous wheel (8) is provided at the bottom end of the centering roller (2) rotatably arranged on the stand (1), a motor (10) is provided on the back of the stand (1), and a belt (9) is connected to the synchronous wheel (8) and the output shaft of the motor (10).

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