A pencil slotting system and method

Abstract

The application discloses a pencil slotting processing system and method, and belongs to the technical field of pencil processing. The system comprises a conveying belt, a plurality of sliding positioning mechanisms are arranged on the conveying belt, the sliding positioning mechanism comprises two guide rails fixed on the conveying belt, a moving plate is slidably arranged between the two guide rails, a pencil positioning block is arranged at the top end of the moving plate, the pencil positioning block is used for fixing a pencil, a driving mechanism is arranged on one side of the conveying belt, and a slotting mechanism is correspondingly arranged on the other side, and the sliding positioning mechanism is used in cooperation with the driving mechanism and the slotting mechanism. The processing system further comprises a PLC control unit, and the PLC control unit is electrically connected with the conveying belt, the driving mechanism and the slotting mechanism. The application can realize the synchronous winding and unwinding of three slotting machines, so that the three surfaces of the pencil can be simultaneously subjected to slotting processing, the slotting depth can be adjusted and controlled, different processing requirements can be met, the operation steps are simple, the processing time is greatly shortened, and the production efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of pencil processing technology, and in particular relates to a pencil grooving processing system and method. Background Technology

[0002] Most pencils on the market are cylindrical or polygonal, with a complete surface. Considering the way fingers hold a pencil, three grip grooves are made on the pencil, which is more in line with the ergonomics of the fingers holding the pencil. This makes it more secure and comfortable for the fingertips to grip the pencil on the surface.

[0003] Existing pencil grooving processing equipment can only groove one side of the pencil. After grooving one side, the angle of the pencil must be manually adjusted to groove the other sides. The above process is cumbersome, time-consuming, and inefficient. Furthermore, the grooving depth cannot be adjusted, leaving considerable room for improvement. Summary of the Invention

[0004] The purpose of this invention is to provide a pencil grooving system and method to overcome the shortcomings of the prior art.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0006] A pencil grooving processing system includes: a conveyor belt, on which multiple sliding positioning mechanisms are provided, each sliding positioning mechanism including: two guide rails fixed on the conveyor belt, a movable plate slidably disposed between the two guide rails, a pencil positioning block disposed at the top of the movable plate for fixing the pencil, a driving mechanism disposed on one side of the conveyor belt, and a corresponding grooving mechanism disposed on the other side, wherein the sliding positioning mechanism is used in conjunction with the driving mechanism and the grooving mechanism;

[0007] The processing system also includes a PLC control unit, which is electrically connected to the conveyor belt, drive mechanism, and grooving mechanism.

[0008] Furthermore, each of the two guide rails has a sliding groove at its opposite end, and the moving plate has a slider symmetrically arranged at its end near the drive mechanism. The two sliders are respectively slidably arranged in the sliding grooves of the two guide rails.

[0009] Furthermore, the driving mechanism includes a cylinder, the output end of which is connected to an electromagnet, and a permanent magnet embedded in the end of the moving plate near the electromagnet, wherein the electromagnet and the permanent magnet are used in conjunction.

[0010] Furthermore, a positioning sensor is provided at the end of the guide rail near the drive mechanism, and a positioning receiver is provided on the side wall of the cylinder, the positioning receiver being used to receive the electrical signal from the positioning sensor.

[0011] Furthermore, the grooving mechanism includes: a lower housing, a guide plate at the top of the lower housing, an upper housing at the top of the guide plate, the lower housing, the guide plate, and the upper housing being fixed together by bolts, a servo motor at the center of the lower housing, a drive plate fixed at the output end of the servo motor, three arc-shaped slides on the drive plate, three straight slides on the guide plate, a sliding rod passing through the corresponding arc-shaped slides and straight slides, a mounting base fixed at the top of the sliding rod, and a grooving machine fixed at the top of the mounting base.

[0012] Furthermore, the grooving machine is provided with a first cutter head and a second cutter head from top to bottom. The first cutter head is used to open an arc-shaped groove, and the second cutter head is used to open a strip-shaped groove.

[0013] Furthermore, an electric telescopic rod is provided at the top of the upper housing, and a limiting head is fixed at the output end of the electric telescopic rod. A circular groove is provided at the bottom end of the limiting head, and the size of the circular groove is adapted to the diameter of the pencil.

[0014] Furthermore, an annular slide rail is provided on the side wall of the lower housing, which is used to improve the rotational stability of the drive disc.

[0015] A method for grooving a pencil, using any of the above-described processing systems, specifically includes the following steps:

[0016] S1: A positioning groove is pre-machined at the bottom of the pencil and inserted into the pencil positioning block;

[0017] S2: Start the conveyor belt, which will drive the sliding positioning mechanism forward. When the positioning receiver on the side wall of the cylinder detects the positioning sensor on the guide rail, the PLC control unit will control the conveyor belt to stop conveying.

[0018] S3: Start the cylinder and energize the electromagnet at its output end, so that the electromagnet is connected to the permanent magnet of the moving plate, pushing the moving plate to slide towards the slotting mechanism.

[0019] S4: When the pencil on the moving plate reaches the center of the guide plate and stops sliding, the PLC control unit controls the electric telescopic rod to descend, so that the upper end of the pencil is inserted into the groove of the limit head.

[0020] S5: Start the servo motor and grooving machine. The drive disk rotates, causing the sliding bar to move along the straight slide of the guide disk, so that the three grooving machines slowly tighten until the first cutter head and the second cutter head complete the opening depth of the arc-shaped groove and the strip groove on the side wall of the pencil and then stop.

[0021] S6: The PLC control unit controls the servo motor to reverse, so that the three slotting machines are slowly relaxed. Then, the cylinder drives the moving plate to move backward until it is reset, and the electromagnet is de-energized.

[0022] S7: Repeat operations S2-S6 to achieve rapid grooving of the pencil;

[0023] S8: Remove the finished pencil and shave off the part with the positioning groove at the bottom of the pencil.

[0024] Furthermore, the pencil has a length of 160-180mm and a diameter of 8-10mm; the arc-shaped groove has a diameter of 5-6mm, the strip groove has a length of 80-90mm and a width of 5-6mm; and the distance between the arc-shaped groove and the strip groove along the length of the pencil is 7-9mm.

[0025] The pencil grooving system and method provided by this invention have the following advantages compared with the prior art:

[0026] This invention has a simple structure, is economical and practical, and can realize intelligent automated production. Through the cooperation between servo motors, drive disks, guide disks and sliding bars, the synchronous feeding and feeding of three grooving machines can be realized, so as to simultaneously grooving three sides of the pencil. Furthermore, the grooving depth can be adjusted to meet different processing needs. The operation steps are simple, greatly shortening the processing time and improving production efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 This is a top view of the present invention;

[0029] Figure 2 This is a front sectional view of the sliding positioning mechanism of the present invention;

[0030] Figure 3 This is a top sectional view of the sliding positioning mechanism of the present invention;

[0031] Figure 4 This is a side sectional view of the grooving mechanism of the present invention;

[0032] Figure 5 This is a top view of the drive disk of the present invention;

[0033] Figure 6 for Figure 4A magnified view of a portion at point A;

[0034] Figure 7 A 3D model of a pencil after processing;

[0035] Figure 8 This is a schematic diagram of the structure of a pencil after it has been sharpened.

[0036] In the diagram: 1-Conveyor belt, 2-Sliding positioning mechanism, 3-Guide rail, 4-Moving plate, 5-Pencil positioning block, 6-Drive mechanism, 7-Grooving mechanism, 8-Groove, 9-Slider, 10-Cylinder, 11-Electromagnet, 12-Lower housing, 13-Guide plate, 14-Upper housing, 15-Servo motor, 16-Drive plate, 17-Arc slide rail, 18-Straight slide rail, 19-Sliding rod, 20-Mounting base, 21-Grooving machine, 22-First cutter head, 23-Second cutter head, 24-Electric telescopic rod, 25-Limit head, 26-Circular groove, 27-Annular slide rail. Detailed Implementation

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments:

[0038] Example 1

[0039] refer to Figure 1-8 As shown, the present invention provides a pencil grooving processing system, characterized in that it includes: a conveyor belt 1, on which a plurality of sliding positioning mechanisms 2 are provided, each sliding positioning mechanism 2 including: two guide rails 3 fixed on the conveyor belt 1, a movable plate 4 slidably disposed between the two guide rails 3, a pencil positioning block 5 disposed at the top of the movable plate 4, the pencil positioning block 5 being used to fix the pencil, a driving mechanism 6 disposed on one side of the conveyor belt 1, and a corresponding grooving mechanism 7 disposed on the other side, the sliding positioning mechanism 2 being used in conjunction with the driving mechanism 6 and the grooving mechanism 7; the processing system further includes: a PLC control unit, the PLC control unit being electrically connected to the conveyor belt 1, the driving mechanism 6, and the grooving mechanism 7.

[0040] In a preferred embodiment, each of the two guide rails 3 has a sliding groove 8 at its opposing ends. A slider 9 is symmetrically arranged at the end of the moving plate 4 near the drive mechanism 6, and the two sliders 9 are slidably disposed in the sliding grooves 8 of the two guide rails 3. The drive mechanism 6 includes a cylinder 10, the output end of which is connected to an electromagnet 11. A permanent magnet is embedded in the end of the moving plate 4 near the electromagnet 11, and the electromagnet 11 works in conjunction with the permanent magnet. A positioning sensor is provided at the end of the guide rail 3 near the drive mechanism 6, and a positioning receiver is provided on the side wall of the cylinder 10. The positioning receiver is used to receive the electrical signal from the positioning sensor. The conveyor belt 1 is started, causing it to drive the sliding positioning mechanism 2 forward. When the positioning receiver on the side wall of the cylinder 10 detects the positioning sensor on the guide rail 3, the PLC control unit controls the conveyor belt 1 to stop conveying.

[0041] In a preferred embodiment, the grooving mechanism 7 includes: a lower housing 12, a guide plate 13 at the top of the lower housing 12, and an upper housing 14 at the top of the guide plate 13. The lower housing 12, the guide plate 13, and the upper housing 14 are fixed together by bolts. A servo motor 15 is disposed at the center of the lower housing 12. A drive plate 16 is fixed at the output end of the servo motor 15. Three arc-shaped slides 17 are formed on the drive plate 16, and three straight slides 18 are formed on the guide plate 13. A sliding rod 19 passes through the corresponding arc-shaped slides 17 and straight slides 18. A mounting base 20 is fixed at the top of the sliding rod 19, and a grooving machine 21 is fixed at the top of the mounting base 20. The grooving machine 21 has a first cutter head 22 and a second cutter head 23 arranged sequentially from top to bottom. The first cutter head 22 is used to cut arc-shaped grooves, and the second cutter head 23 is used to cut strip-shaped grooves. An electric telescopic rod 24 is provided at the top of the upper housing 14. A limiting head 25 is fixed to the output end of the electric telescopic rod 24. A circular groove 26 is provided at the bottom end of the limiting head 25. The size of the circular groove 26 is adapted to the diameter of the pencil. An annular slide rail 27 is provided on the side wall of the lower housing 12. The annular slide rail 27 is used to improve the rotational stability of the drive disk 16. Through the cooperation between the servo motor 15, the drive disk 16, the guide disk 13 and the sliding rod 19, the three grooving machines 21 can be synchronously raised and lowered, so that the three sides of the pencil can be grooved at the same time. The grooving depth can also be adjusted to meet different processing requirements. The operation steps are simple, greatly shortening the processing time and improving production efficiency.

[0042] More preferably, multiple drive mechanisms 6 and grooving mechanisms 7 can be arrayed to further improve processing efficiency.

[0043] Example 2

[0044] A method for grooving a pencil, using the aforementioned processing system, specifically includes the following steps:

[0045] S1: A positioning groove is pre-machined at the bottom of the pencil and inserted into the pencil positioning block 5;

[0046] S2: Start the conveyor belt 1, so that the conveyor belt 1 drives the sliding positioning mechanism 2 forward. When the positioning receiver on the side wall of the cylinder 10 detects the positioning sensor on the guide rail 3, the PLC control unit controls the conveyor belt 1 to stop conveying.

[0047] S3: Start cylinder 10 and energize electromagnet 11 at its output end, so that electromagnet 11 is connected to the permanent magnet of moving plate 4, and pushes moving plate 4 to slide towards slotting mechanism 7.

[0048] S4: When the pencil on the moving plate 4 reaches the center of the guide plate 13 and stops sliding, the PLC control unit controls the electric telescopic rod 24 to descend, so that the upper end of the pencil is inserted into the circular groove 26 of the limit head 25.

[0049] S5: Start the servo motor 15 and the grooving machine 21. The drive disk 16 rotates and drives the sliding bar 19 to move along the straight slide 18 of the guide disk 13, so that the three grooving machines 21 slowly tighten until the first cutter head 22 and the second cutter head 23 complete the opening depth of the arc-shaped groove and the strip groove on the side wall of the pencil and then stop.

[0050] S6: The PLC control unit controls the servo motor 15 to reverse, so that the three slotting machines 21 are slowly relaxed. Then, the cylinder 10 drives the moving plate 4 to move backward until it is reset, and the electromagnet 11 is de-energized.

[0051] S7: Repeat operations S2-S6 to achieve rapid grooving of the pencil;

[0052] S8: Remove the finished pencil and shave off the part with the positioning groove at the bottom of the pencil.

[0053] The pencil has a length of 160-180mm and a diameter of 8-10mm; the arc-shaped groove has a diameter of 5-6mm, the strip groove has a length of 80-90mm and a width of 5-6mm; along the length of the pencil, the distance between the arc-shaped groove and the strip groove is 7-9mm.

[0054] In this embodiment, the pencil has a length of 177mm and a diameter of 8mm; the arc-shaped groove has a diameter of 5.5mm, the strip groove has a length of 81.5mm and a width of 5.5mm; and the distance between the arc-shaped groove and the strip groove along the length of the pencil is 8mm.

[0055] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0056] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0057] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A pencil grooving system, characterized in that, Include: The conveying belt (1) is provided with a plurality of sliding positioning mechanisms (2), the sliding positioning mechanism (2) comprises: two guide rails (3) fixed on the conveying belt (1), the moving plate (4) is slidably arranged between the two guide rails (3), the top end of the moving plate (4) is provided with a pencil positioning block (5), the pencil positioning block (5) is used for fixing a pencil, one side of the conveying belt (1) is provided with a driving mechanism (6), the other side is provided with a slotting mechanism (7) correspondingly, the sliding positioning mechanism (2) is used in cooperation with the driving mechanism (6) and the slotting mechanism (7); The processing system further comprises a PLC control unit electrically connected with the conveying belt (1), the driving mechanism (6) and the slotting mechanism (7); The slotting mechanism (7) comprises: a lower shell (12), the top end of the lower shell (12) is provided with a guide disc (13), the top end of the guide disc (13) is provided with an upper shell (14), the lower shell (12), the guide disc (13) and the upper shell (14) are fixed by bolts, the inside center of the lower shell (12) is provided with a servo motor (15), the output end of the servo motor (15) is fixed with a driving disc (16), three arc-shaped slides (17) are formed in the driving disc (16), three straight slides (18) are formed in the guide disc (13), a sliding rod (19) is arranged between the corresponding arc-shaped slide (17) and the straight slide (18), the top end of the sliding rod (19) is fixed with a mounting seat (20), and the top end of the mounting seat (20) is fixed with a slotting machine (21).

2. A pencil slotting system according to claim 1, wherein The opposite ends of the two guide rails (3) are provided with sliding grooves (8), and the end of the moving plate (4) close to the driving mechanism (6) is provided with a sliding block (9) symmetrically, and the two sliding blocks (9) are slidably arranged in the sliding grooves (8) of the two guide rails (3).

3. The pencil slotting system of claim 1, wherein The driving mechanism (6) comprises: a pneumatic cylinder (10), the output end of the pneumatic cylinder (10) is connected with an electromagnet (11), one end of the moving plate (4) close to the electromagnet (11) is embedded with a permanent magnet, and the electromagnet (11) is used in cooperation with the permanent magnet.

4. A pencil slotting system according to claim 3, wherein The end of the guide rail (3) close to the driving mechanism (6) is provided with a positioning sensor, and the side wall of the pneumatic cylinder (10) is provided with a positioning receiver for receiving the electrical signal of the positioning sensor.

5. The pencil slotting system of claim 3, wherein The slotting machine (21) is provided with a first cutter head (22) and a second cutter head (23) from top to bottom, the first cutter head (22) is used for forming a circular arc slot, and the second cutter head (23) is used for forming a strip-shaped slot.

6. A pencil slotting system according to claim 5, wherein The top end of the upper shell (14) is provided with an electric telescopic rod (24), the output end of the electric telescopic rod (24) is fixed with a limiting head (25), the bottom end of the limiting head (25) is provided with a circular groove (26), and the size of the circular groove (26) is matched with the diameter of the pencil.

7. The pencil slotting system of claim 1, wherein The side wall of the lower shell (12) is provided with an annular slide rail (27), and the annular slide rail (27) is used for improving the rotation stability of the driving disc (16).

8. A method of grooving a pencil, characterized by, The processing system of claim 6, comprising the following steps: S1: a positioning groove is pre-processed at the bottom end of the pencil and is inserted into the pencil positioning block (5); S2: the conveying belt (1) is started to drive the sliding positioning mechanism (2) to move forward, and the PLC control unit controls the conveying belt (1) to stop conveying when the positioning receiver on the side wall of the air cylinder (10) detects the positioning sensor on the guide rail (3); S3: the air cylinder (10) is started and the electromagnet (11) at the output end is powered on, so that the electromagnet (11) is connected with the permanent magnet of the moving plate (4), and the moving plate (4) is pushed to slide towards the slotting mechanism (7); S4: when the pencil on the moving plate (4) reaches the center of the guide disc (13), the sliding is stopped, at this time, the PLC control unit controls the electric telescopic rod (24) to descend, so that the upper end of the pencil is inserted into the circular groove (26) of the limiting head (25); S5: the servo motor (15) and the slotting machine (21) are started, the driving disc (16) is rotated to drive the sliding rod (19) to move along the straight slide (18) of the guide disc (13), so that the three slotting machines (21) are slowly tightened, and the first cutter head (22) and the second cutter head (23) stop when the opening depth of the pencil side wall arc-shaped groove and the strip-shaped groove is completed; S6: the PLC control unit controls the servo motor (15) to reverse, so that the three slotting machines (21) are slowly loosened, and then the moving plate (4) is withdrawn backward to the reset position by the air cylinder (10), and the electromagnet (11) is powered off; S7: the operations of S2-S6 are repeated to realize the rapid slotting processing of the pencil; S8: the processed pencil is taken out, and the part of the pencil with the positioning groove at the bottom end is removed.

9. The method of claim 8, wherein the pencil is a wood pencil. The length of the pencil is 160-180mm, and the diameter is 8-10mm; the diameter of the arc-shaped groove is 5-6mm, the length of the strip-shaped groove is 80-90mm, and the width is 5-6mm; along the length direction of the pencil, the distance between the arc-shaped groove and the strip-shaped groove is 7-9mm.

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