Workpiece mounting apparatus and automatic pencil production system

Abstract

The present disclosure relates to the technical field of automation production, and particularly relates to a workpiece mounting device and a mechanical pencil production system. The workpiece mounting device comprises a first reciprocating driving mechanism, a lifting device, a first clamping part, a turnover mechanism and a second clamping part. The first reciprocating driving mechanism is connected with the lifting device. The first clamping part is installed on the first reciprocating driving mechanism and is used for clamping a first part of a workpiece and placing the workpiece in the turnover mechanism. The second part of the workpiece is located in the turnover mechanism, and the first part is located above the second part. The turnover mechanism can rotate by 180 DEG, so that the first part of the workpiece is located below the second part. The second clamping part is installed on the first reciprocating driving mechanism and is used for placing the workpiece in the turnover mechanism on a target work station. The second clamping part is used for clamping the second part of the workpiece, so that the turnover precision and consistency of the workpiece can be ensured, and the alignment success rate, assembly reliability and production efficiency are improved.

Description

Technical Field

[0001] This disclosure relates to the field of automated production technology, and in particular to a workpiece mounting device and an automatic pencil production system. Background Technology

[0002] In automated assembly and industrial production lines, many workpieces (such as the clips of mechanical pencils, electronic components on circuit boards, etc.) have orientation requirements. After initial supply or completion of the previous process, the spatial orientation or position of these workpieces may not meet the requirements of the current assembly station or the next process. For example, when the target station only allows the workpiece to be installed with a specific surface facing up or a specific portion facing down, the workpiece needs to be rotated 180° to achieve alignment.

[0003] In related technologies, when using manual labor or general-purpose robotic arms to flip small, precision workpieces, it is impossible to guarantee the flipping accuracy and consistency, which can easily lead to assembly failure and reduce production efficiency. Utility Model Content

[0004] The purpose of this disclosure is to provide a workpiece mounting device and an automatic pencil production system to ensure the flipping accuracy and consistency of workpieces and to improve production efficiency.

[0005] To achieve the above objectives, this disclosure provides a workpiece mounting device. The workpiece has a first part and a second part. The workpiece mounting device includes a first reciprocating drive mechanism, a lifting device, a first clamping part, a flipping mechanism, and a second clamping part. The first reciprocating drive mechanism is connected to the lifting device. The first clamping part is mounted on the first reciprocating drive mechanism for clamping the first part of the workpiece and placing the workpiece in the flipping mechanism. The second part of the workpiece is located inside the flipping mechanism, and the first part is located above the second part. The flipping mechanism is capable of rotating 180° so that the first part of the workpiece is located below the second part; The second gripping part is installed on the first reciprocating drive mechanism and is used to place the workpiece in the flipping mechanism at the target station, wherein the second gripping part is used to grip the second part of the workpiece.

[0006] In some embodiments of this disclosure, the flipping mechanism includes a first driving part and a flipping part. The first driving part is capable of driving the flipping part to rotate 180° around a set axis. The flipping part is provided with a placement cavity. Along the movement direction of the lifting device, the placement cavity has a first end and a second end. Along the extension direction of the set axis, the size of the first end is larger than the size of the second end. The first clamping part is used to place the workpiece from the first end into the placement cavity, wherein a second part of the workpiece abuts against the cavity wall of the placement cavity.

[0007] In some embodiments of this disclosure, the flipping part includes two halves, each half being provided with a guide groove. The width of the guide groove gradually decreases from one end to the other end. The two groove walls of the guide groove are inclined relative to the extension direction of the guide groove. The two halves are fastened together, and the guide groove on one half is opposite to the groove opening of the guide groove on the other half to form the placement cavity. The groove wall and the bottom of the guide groove together form the cavity wall of the placement cavity.

[0008] In some embodiments of this disclosure, the first reciprocating drive mechanism includes a linear guide rail connected to the lifting device, and both the first clamping portion and the second clamping portion are connected to the linear guide rail, with the second clamping portion located on the side of the first clamping portion closer to the target workstation.

[0009] To achieve the above objectives, this disclosure also provides an automatic pencil production system, including the workpiece mounting device described in any of the above embodiments, wherein the workpiece is a chuck, the chuck includes a insert rod and an elastic branch, wherein the insert rod is the first part and the elastic branch is the second part.

[0010] In some embodiments of this disclosure, the automatic pencil production system further includes a frame and a turntable, both of which are mounted on the frame. The turntable is rotatable relative to the frame about its own axis and has a plurality of circumferentially arranged pen barrel mounting positions for supporting the pencil barrel.

[0011] In some embodiments of this disclosure, the automatic pencil production system further includes a chuck fixing device located on the outer periphery of the turntable and downstream of the workpiece mounting device in the rotation direction of the turntable. The chuck fixing device is used to fix the insert of the chuck onto the snap-fit ​​member inside the pencil barrel and to retract the elastic branch of the chuck into the locking ring inside the pencil barrel.

[0012] In some embodiments of this disclosure, the clamp fixing device includes a second driving part, a tightening sleeve, a second reciprocating driving mechanism, and a pressure rod. The second driving part and the second reciprocating driving mechanism are both connected to the lifting device. The second driving part can drive the tightening sleeve to rotate around its own axis. The end of the tightening sleeve near the clamp is provided with a frustum-shaped recess. The end of the frustum-shaped recess with a larger opening is close to the clamp. The lifting device can drive the surface of the frustum-shaped recess to contact the elastic branch of the clamp, so that the elastic branch retracts inward. The pressure rod passes through the tightening sleeve. The second reciprocating driving mechanism can drive the pressure rod to move downward, so as to fix the insertion rod of the clamp onto the snap-fit ​​member inside the pen barrel.

[0013] In some embodiments of this disclosure, the second drive unit includes a telescopic device, a rack, and a gear. The cylinder of the telescopic device is connected to the lifting device, the piston rod of the telescopic device is connected to the rack, the gear meshes with the rack, and the tightening sleeve is fixedly connected to the gear and coaxially arranged.

[0014] In some embodiments of this disclosure, the clamp fixing device further includes a mounting frame, the second reciprocating drive mechanism and the second drive unit are both connected to the lifting device through the mounting frame, the cylinder of the telescopic device is mounted on the mounting frame, the piston rod of the telescopic device is fixedly connected to the rack through an adapter, and the gear is mounted on the mounting frame.

[0015] In some embodiments of this disclosure, the mounting bracket is provided with a mounting part, the mounting part is provided with a cavity for the pressure rod to pass through, the gear is mounted on the mounting part via a rotating shaft, the rotating shaft is located in the cavity, and the rotating shaft is a hollow structure for the pressure rod to pass through.

[0016] Through long-term observation, experimentation, and research, the inventors discovered that while general-purpose robotic arms can improve work efficiency compared to manual operation, when flipping, the robotic arm always clamps a specific part of the workpiece. For example, by flipping, the orientation of that specific part of the workpiece is adjusted from facing upwards to facing downwards. When the robotic arm brings the workpiece with the adjusted orientation to the top of the target workstation, the robotic arm itself occupies the assembly space of the target workstation. When the robotic arm installs that specific part at the target workstation, it must release and quickly withdraw before the insertion is completed. During the process of the workpiece falling or the robotic arm withdrawing, the robotic arm is prone to interference with other parts of the workpiece (especially parts far away from the target workstation), which can easily lead to assembly failure.

[0017] Based on this, the main beneficial effects of this disclosure are: The workpiece mounting device provided in this disclosure, when in use, uses a first clamping part to clamp the first part of the workpiece. Under the drive of the first reciprocating drive mechanism and the lifting device, the first clamping part can place the workpiece in the flipping mechanism, and the second part of the workpiece is located in the flipping mechanism. Since the first clamping part clamps the first part, it will not occupy or interfere with the mating space required for assembly. After the workpiece is placed in the flipping mechanism, the first clamping part can directly release the first part, and there will be no interference between the two. Then, the flipping mechanism rotates 180° along with the workpiece inside, so that the first part of the workpiece is below the second part. At this time, driven by the first reciprocating drive mechanism and the lifting device, the second gripping part clamps the second part of the workpiece in the flipping mechanism and places the workpiece at the target station. Since the first part is below the second part and closer to the target station, when the first part is assembled at the target station, the second gripping part will not occupy or interfere with the mating space required for assembly. After the workpiece is placed at the target station, the second gripping part can directly release the second part, and there will be no interference between the second gripping part and the second part, ensuring the flipping accuracy and consistency of the workpiece, improving the alignment success rate, assembly reliability and production efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the workpiece mounting equipment provided in the embodiments of this disclosure; Figure 2 for Figure 1 A magnified view of a section at point I; Figure 3 A partial structural schematic diagram of the workpiece mounting device provided in an embodiment of this disclosure (showing the workpiece); Figure 4 This is a schematic diagram of the internal structure of the flipping part and the clamp in an embodiment of this disclosure; Figure 5 A schematic diagram of the structure of the workpiece mounting device provided in this embodiment of the present disclosure, showing the flipping part flipped 180°. Figure 6 for Figure 5 Enlarged view of a section at point II; Figure 7 A top view of an automatic pencil production system provided in an embodiment of this disclosure; Figure 8A partial structural diagram of the automatic pencil production system provided in the embodiments of this disclosure. Figure 1 ; Figure 9 for Figure 8 Enlarged view of a section at point III; Figure 10 This is a partial structural diagram of the rack in an embodiment of this disclosure; Figure 11 This is a schematic diagram of the lifting device in an embodiment of this disclosure; Figure 12 A partial structural diagram of the automatic pencil production system provided in the embodiments of this disclosure. Figure 2 ; Figure 13 for Figure 12 A magnified view of a section at point IV; Figure 14 This is a schematic diagram of the clamp fixing device in an embodiment of the present disclosure; Figure 15 A partial structural diagram of the automatic pencil production system provided in the embodiments of this disclosure. Figure 3 ; Figure 16 for Figure 15 A magnified view of section V.

[0020] The annotations in the attached figures are explained as follows: 11. First reciprocating drive mechanism; 12. First gripping part; 13. Tilting mechanism; 131. First drive part; 132. Tilting part; 1320. Placement cavity; 1321. Half part; 14. Second gripping part; 20. Lifting device; 21. First drive shaft; 211. Fifth cam; 212. Sixth cam; 22. Second drive shaft; 221. First cam; 222. Second cam; 23. Third drive shaft; 231. Third cam; 232. Fourth cam; 24. Fourth drive shaft; 241. Seventh cam; 242. Eighth cam; 25. Motor; 26. Reducer; 271. First sprocket and chain drive assembly; 272. Second sprocket and chain drive assembly; 273. Third sprocket and chain drive assembly; 28. Encoder; 201. First lifting shaft; 202. Second lifting shaft; 30. Shaft lowering; 31. Frame; 32. Assembly table; 321. Intermittent divider; 40. Turntable; 41. Bearing part; 50. Clamp fixing device; 51. Second drive part; 511. Telescopic device; 512. Rack; 513. Gear; 52. Tightening sleeve; 521. Frustum-shaped recess; 53. Second reciprocating drive mechanism; 54. Pressure rod; 55. Mounting frame; 60. Conveying device; 61. Vibratory plate; 62. Linear vibratory feeder; 71. Pen barrel feeding device; 72. Pen barrel picking device; 73. Pen barrel positioning device; 81. Locking ring feeding device; 82. Locking ring picking device; 83. Locking ring detection device; 91. Good product picking device; 92. Defective product picking device; 100. Clamp; 101. Insert rod; 102. Elastic branch part; 200. Pen barrel. Detailed Implementation

[0021] The technical solutions of this disclosure will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0022] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure 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 disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0024] See Figures 1 to 16 As shown, this embodiment of the present disclosure provides a workpiece mounting device. The workpiece has a first part and a second part. The workpiece mounting device includes a first reciprocating drive mechanism 11, a lifting device 20, a first clamping part 12, a flipping mechanism 13, and a second clamping part 14. The first reciprocating drive mechanism 11 is connected to the lifting device 20. The first clamping part 12 is mounted on the first reciprocating drive mechanism 11 and is used to clamp the first part of the workpiece and place the workpiece in the flipping mechanism 13. The second part of the workpiece is located in the flipping mechanism 13, and the first part is located above the second part. The flipping mechanism 13 can rotate 180° so that the first part of the workpiece is located below the second part. The second clamping part 14 is mounted on the first reciprocating drive mechanism 11 and is used to place the workpiece in the flipping mechanism 13 at a target station. The second clamping part 14 is used to clamp the second part of the workpiece.

[0025] The workpiece mounting device provided in this embodiment uses a first clamping part 12 to clamp the first part of the workpiece during use. Driven by the first reciprocating drive mechanism 11 and the lifting device 20, the first clamping part 12 can place the workpiece in the flipping mechanism 13, and the second part of the workpiece is located in the flipping mechanism 13. Since the first clamping part 12 clamps the first part, it will not occupy or interfere with the mating space required for assembly. After the workpiece is placed in the flipping mechanism 13, the first clamping part 12 can directly release the first part, and there will be no interference between the two. Then, the flipping mechanism 13 flips the workpiece inside it by 180°, so that the first part of the workpiece is below the second part. At this time, driven by the first reciprocating drive mechanism 11 and the lifting device 20, the second clamping part 14 clamps the second part of the workpiece in the flipping mechanism 13 and places the workpiece at the target station. Since the first part is below the second part and closer to the target station, when the first part is assembled at the target station, the second clamping part 14 will not occupy or interfere with the mating space required for assembly. After the workpiece is placed at the target station, the second clamping part 14 can directly release the second part, and there will be no interference between the second clamping part 14 and the second part, ensuring the flipping accuracy and consistency of the workpiece, improving the alignment success rate, assembly reliability and production efficiency.

[0026] Furthermore, using the first reciprocating drive mechanism 11 and the lifting device 20 to jointly drive the first clamping part 12 and the second clamping part 14 is beneficial to achieving a more compact structural layout and continuous process connection.

[0027] In some embodiments, the workpiece can be a mechanical pencil clamp 100, which includes a insert 101 and a resilient branch 102, wherein the insert 101 is a first part and the resilient branch 102 is a second part. Exemplarily, there are two resilient branches 102, and the insert 101 and the resilient branch 102 are integrally formed. The workpiece mounting device provided in this disclosure embodiment can be applied in an automatic pencil production system, and the target station can be the interior of the end of the pencil barrel 200 used for mounting the pencil tip.

[0028] Of course, the workpiece is not limited to the chuck 100; it can also be other parts, including first and second parts with different structural shapes, and which have directional requirements during installation. Accordingly, the workpiece mounting equipment is not limited to the application scenario of an automatic pencil production system.

[0029] The lifting device 20 can take many forms. In some embodiments, the lifting device 20 may include a sprocket and chain drive assembly and a drive shaft. The drive shaft is provided with a cam. The cam is connected to the first reciprocating drive mechanism 11 through the lifting shaft. The sprocket and chain drive assembly drives the lifting shaft to rotate, and the lifting shaft drives the cam to rotate. The cam drives the lifting shaft to rise or fall.

[0030] In other embodiments, the lifting device 20 may also include a linear reciprocating drive mechanism such as a hydraulic cylinder or an electric cylinder.

[0031] In one specific implementation, see Figure 11 As shown, the lifting device 20 includes a motor 25, a first drive shaft 21, a second drive shaft 22, a third drive shaft 23, and a fourth drive shaft 24. The motor 25 is connected to the first drive shaft 21, the first drive shaft 21 is connected to the second drive shaft 22, the second drive shaft 22 is connected to the third drive shaft 23, and the third drive shaft 23 is connected to the fourth drive shaft 24. The second drive shaft 22 is provided with a first cam 221 and a second cam 222. The first cam 221 is connected to the first reciprocating drive mechanism 11 through the first lifting shaft 201.

[0032] In some embodiments, the first reciprocating drive mechanism 11 includes a linear guide rail connected to the lifting device 20. The first clamping portion 12 and the second clamping portion 14 are both connected to the linear guide rail, with the second clamping portion 14 located on the side of the first clamping portion 12 closer to the target workstation. The first reciprocating drive mechanism 11 may also include a cylinder or an electric push rod. One end of the cylinder or electric push rod is connected to the base of the linear guide rail, and the other end is connected to the first clamping portion 12 and the second clamping portion 14. The extension and retraction of the cylinder or electric push rod drive the first clamping portion 12 and the second clamping portion 14 to reciprocate, and the linear guide rail serves as a guide.

[0033] For example, the linear guide rail is connected to the first cam 221 via the first lifting shaft 201, and both the first clamping part 12 and the second clamping part 14 may include a gripper cylinder. The first clamping part 12 and the second clamping part 14 can rise or fall simultaneously under the drive of the first lifting shaft 201, or they can move simultaneously in the same direction under the drive of the first reciprocating drive mechanism 11. In order to facilitate the clamping of different parts of the workpiece, the opening and closing directions of the grippers of the first clamping part 12 and the second clamping part 14 are different. For example, the opening and closing directions of the grippers of the first clamping part 12 and the second clamping part 14 are perpendicular, wherein the opening and closing direction of the grippers of the first clamping part 12 is consistent with the extension and retraction direction of the first reciprocating drive mechanism 11, and the opening and closing direction of the grippers of the second clamping part 14 is perpendicular to the extension and retraction direction of the first reciprocating drive mechanism 11.

[0034] In some embodiments, see Figure 1 and Figure 2 As shown, the flipping mechanism 13 includes a first driving part 131 and a flipping part 132. The first driving part 131 can drive the flipping part 132 to rotate 180° around a set axis. The flipping part 132 is provided with a placement cavity 1320. Along the movement direction of the lifting device 20, the placement cavity 1320 has a first end and a second end. Along the extension direction of the set axis, the size of the first end is larger than the size of the second end. The first clamping part 12 is used to put the workpiece into the placement cavity 1320 from the first end, wherein the second part of the workpiece abuts against the cavity wall of the placement cavity 1320.

[0035] In some embodiments, the first drive unit 131 can be a rotary cylinder, the output shaft of the rotary cylinder is connected to the flipping unit 132 in a transmission connection, and the set axis is the axis of the output shaft of the rotary cylinder; the flipping unit 132 includes two halves 1321, each half 1321 is provided with a guide groove, the width of the guide groove gradually decreases from one end to the other end, the two groove walls of the guide groove are inclined relative to the extension direction of the guide groove, the two halves 1321 are fastened together, the guide groove on one half 1321 is opposite to the groove opening of the guide groove on the other half 1321 to form a placement cavity 1320, the groove wall and the groove bottom of the guide groove together form the cavity wall of the placement cavity 1320.

[0036] For example, each half 1321 is provided with two guide grooves. The two halves 1321 are fastened together, and the two guide grooves on one half 1321 correspond one-to-one with the two guide grooves on the other half 1321 to form two placement cavities 1320. The structures of the two halves can be different. One half has an extension plate, the thickness of which is less than the thickness of the half. The guide groove extends to the extension plate. Therefore, the thickness of the groove wall of the guide groove located on the extension plate is smaller, ensuring that the elastic branch portion 102 of the clamp can be exposed and protrude, so that the second clamping part 14 can clamp the elastic branch portion 102.

[0037] See Figure 3 and Figure 4 As shown, the first gripping part 12 clamps the insertion rod 101 of the chuck 100. The first reciprocating drive mechanism 11 drives the first gripping part 12 to move above the placement cavity 1320. The lifting device 20 drives the first gripping part 12 to descend, and the first gripping part 12 places the chuck 100 in the placement cavity 1320. The elastic branch 102 of the chuck 100 can undergo elastic deformation to abut against the groove wall of the guide groove, thereby fixing it in the guide groove and preventing it from falling out of the placement cavity 1320 during the flipping process. It should be noted that along the arrangement direction of the two halves 1321, the size of the elastic branch 102 is larger than the size of the placement cavity 1320.

[0038] At this time, see Figure 5 and Figure 6As shown, the first driving unit 131 drives the flipping unit 132 to rotate 180° around a set axis, so that the elastic branch 102 of the chuck 100 faces the second gripping unit 14. The two grippers of the second gripping unit 14 are distributed along the arrangement direction of the two halves 1321. Since the size of the elastic branch 102 is larger than the size of the placement cavity 1320, it is ensured that the two grippers of the second gripping unit 14 can clamp the elastic branch 102. At this time, the lifting device 20 drives the second gripping unit 14 and the first gripping unit 12 to rise. The second gripping unit 14 takes out the chuck 100 from the placement cavity 1320. At the same time, the first gripping unit 12 can take out the chuck 100 from the workpiece conveyor line (e.g., the linear vibrating feeder 62). Then, the first drive unit 131 drives the flipping unit 132 to rotate 180° around the set axis, so that the first end of the placement cavity 1320 faces upward; the first reciprocating drive mechanism 11 drives the second clamping unit 14 and the first clamping unit 12 to move together towards the target workstation. The second clamping unit 14 drives the chuck 100 to move above the pen barrel 200, and the first clamping unit 12 drives the chuck 100 to move above the first end of the flipping unit 132; the lifting device 20 drives the second clamping unit 14 and the first clamping unit 12 to descend. The jaws of the second clamping unit 14 release, and the insertion rod 101 of the chuck 100 falls into the locking ring in the pen barrel 200. The first clamping unit 12 drives the chuck 100 into the placement cavity 1320, and the elastic branch 102 of the chuck 100 abuts against the groove wall of the guide groove. This repetition can realize the continuous feeding and installation process of the chuck 100.

[0039] It should be noted that, Figure 6 In the diagram, the chuck 100 inside the flipping section 132 is used to show the state of the chuck inside the placement cavity. In actual operation, when the second gripping section 14 removes the chuck from the flipping section 132, there is no chuck inside the placement cavity.

[0040] See Figure 8 and Figure 9 As shown, this disclosure also provides an automatic pencil production system, including the workpiece mounting device provided in any of the above embodiments, wherein the workpiece is a chuck 100, the chuck 100 includes a rod 101 and an elastic branch 102, wherein the rod 101 is the first part and the elastic branch 102 is the second part.

[0041] The automatic pencil production system provided in this embodiment uses the workpiece mounting equipment provided in any of the above embodiments. In use, the first clamping part 12 clamps the insertion rod 101 of the chuck 100. Under the drive of the first reciprocating drive mechanism 11 and the lifting device 20, the first clamping part 12 can place the chuck 100 in the flipping mechanism 13, and the elastic branch 102 of the chuck 100 is located in the flipping mechanism 13. Since the first clamping part 12 clamps the insertion rod 101, it will not occupy or interfere with the mating space required for assembly. After placing the chuck 100 in the flipping mechanism 13, the first clamping part 12 can directly release the insertion rod 101, and there will be no interference between the two. Then, the flipping mechanism 13 flips 180° together with the internal chuck 100, so that the insertion rod 101 of the chuck 100 is located below the elastic branch 102. At this time, driven by the first reciprocating drive mechanism 11 and the lifting device 20, the second gripping part 14 clamps the elastic branch 102 of the chuck 100 located in the flipping mechanism 13 and places the chuck 100 at the target station. Since the insertion rod 101 is located below the elastic branch 102, the insertion rod 101 is closer to the target station. When the insertion rod 101 is assembled to the target station, the second gripping part 14 will not occupy or interfere with the mating space required for assembly. After placing the chuck 100 at the target station, the second gripping part 14 can directly release the elastic branch 102. There will be no interference between the second gripping part 14 and the elastic branch 102, ensuring the flipping accuracy and consistency of the chuck 100, improving the alignment success rate, assembly reliability and production efficiency.

[0042] In some embodiments, see Figure 7 and Figure 10 As shown, the automatic pencil production system also includes a frame 30 and a turntable 40. The lifting device 20 and the turntable 40 are both installed on the frame 30. The turntable 40 can rotate relative to the frame 30 around its own axis. The turntable 40 is provided with a plurality of pencil mounting positions for supporting the pencil barrel 200 in the circumferential direction.

[0043] The frame 30 includes a frame body 31 and an assembly table 32. An electrical box is located on one side of the frame body 31 for supplying power to the equipment. The assembly table 32 is fixedly mounted on the frame body 31 and is equipped with an intermittent divider 321. The intermittent divider 321 converts continuous input motion (e.g., continuous motor rotation) into intermittent output motion. After the turntable 40 rotates to a set angle, it ensures precise positioning and locking, maintaining stability during the stopping phase for convenient processing or operation. The turntable 40 is located above the assembly table 32. Multiple sets of support portions 41 are evenly spaced around the turntable 40. Exemplarily, each set of support portions 41 includes two pen holder mounting positions with mounting holes. The number of support portions 41 in this embodiment can be a set, but is not limited to this.

[0044] See Figure 7 As shown, the automatic pencil production system also includes a pencil barrel feeding device 71, a pencil barrel picking device 72, a pencil barrel positioning device 73, a locking ring feeding device 81, a locking ring picking device 82, a locking ring detection device 83, a clamp fixing device 50, a good product picking device 91, and a defective product picking device 92.

[0045] Starting from the position of the pen barrel feeding device 72, in the rotation direction of the turntable 40 (with... Figure 7 (In the direction indicated by arrow P) the pen barrel detection device, pen barrel positioning device 73, locking ring picking device 82, locking ring detection device 83, workpiece mounting equipment, chuck fixing device 50, good product picking device 91 and defective product picking device 92 are arranged in sequence; the pen barrel feeding device 71 is located on the side of the pen barrel picking device 72 away from the turntable 40.

[0046] The second cam 222 in the lifting device 20 is connected to the clamp fixing device 50 through the second lifting shaft 202. The third transmission shaft 23 is provided with a third cam 231 and a fourth cam 232. The third cam 231 is connected to the locking ring picking device 82 through the third lifting shaft (not shown in the figure), and the fourth cam 232 is connected to the locking ring detection device 83 through the fourth lifting shaft (not shown in the figure).

[0047] The first drive shaft 21 is provided with a fifth cam 211 and a sixth cam 212. The fifth cam 211 is connected to the good product picking device 91 through a fifth lifting shaft (not shown in the figure), and the sixth cam 212 is connected to the defective product picking device 92 through a sixth lifting shaft (not shown in the figure).

[0048] The fourth drive shaft 24 is equipped with a seventh cam 241 and an eighth cam 242. The seventh cam 241 is connected to the pen barrel picking device 72 via a seventh lifting shaft (not shown in the figure), and the eighth cam 242 is connected to the pen barrel positioning device 73 via an eighth lifting shaft (not shown in the figure).

[0049] The lifting device 20 is installed below the assembly table 32, which is provided with through holes for the first lifting shaft 201, the second lifting shaft 202, the third lifting shaft, the fourth lifting shaft, the fifth lifting shaft, the sixth lifting shaft, the seventh lifting shaft and the eighth lifting shaft to pass through.

[0050] In some embodiments, see Figure 11As shown, the lifting device 20 also includes a reducer 26 and an encoder 28. The motor 25 is connected to the reducer 26 via a pulley transmission assembly. The reducer 26 is connected to the first drive shaft 21 via a first sprocket and chain transmission assembly 271. The first drive shaft 21 is connected to the second drive shaft 22 via a bevel gear 513. The second drive shaft 22 is connected to the third drive shaft 23 via a bevel gear 513. The third drive shaft 23 is connected to the fourth drive shaft 24 via a bevel gear 513. The first drive shaft 21 and the third drive shaft 23 are arranged in parallel opposite directions, and the second drive shaft 22 and the fourth drive shaft 24 are arranged in parallel opposite directions.

[0051] The fourth drive shaft 24 is connected to the second sprocket and chain drive assembly 272. The second sprocket and chain drive assembly 272 is connected to the intermittent divider 321 through the third sprocket and chain drive assembly 273. The fourth drive shaft 24 is connected to the encoder 28 through the fourth sprocket and chain drive assembly. The encoder 28 is used to measure the angle of rotation of the turntable 40.

[0052] It should be understood that the structure and working principle of the pen barrel feeding device 71, pen barrel picking device 72, pen barrel positioning device 73, locking ring feeding device 81, locking ring picking device 82, locking ring detection device 83, good product picking device 91 and defective product picking device 92 are things that should be understood by those skilled in the art, and are well known and easy to implement for those skilled in the art. Therefore, this embodiment will not describe them in detail.

[0053] In some embodiments, see Figure 7 and Figure 8 As shown, the automatic pencil production system also includes a conveying device 60, which includes a vibratory feeder 61 and a linear vibratory feeder 62. The vibratory feeder 61 feeds the oriented chuck 100 into the linear vibratory feeder 62, which continuously conveys the chuck 100 to the next station. The linear vibratory feeder 62 has partitions on its linear conveying track, and the two elastic branches 102 of the chuck 100 are located on either side of the partitions, which support the chuck 100.

[0054] It should be understood that the structure and working principle of the vibratory feeder 61 and the linear vibratory feeder 62 are both understandable to those skilled in the art and are well-known and easy to implement for them. Therefore, this embodiment will not describe them in detail.

[0055] In some embodiments, the chuck fixing device 50 is located on the outer periphery of the turntable 40, and in the rotation direction of the turntable 40, the chuck fixing device 50 is located downstream of the workpiece mounting device. The chuck fixing device 50 is used to fix the insertion rod 101 of the chuck 100 onto the snap member inside the pen barrel 200, and to retract the elastic branch 102 of the chuck 100 into the locking ring inside the pen barrel 200.

[0056] After the second clamping part 14 places the clamp 100 inside the locking ring, the turntable 40 continues to rotate, conveying the pen barrel 200 with the clamp 100 and locking ring installed to the area below the clamp fixing device 50. The clamp fixing device 50 drives the clamp 100 to move downward, so that the insert 101 is fixed on the snap member inside the pen barrel 200, and at the same time, the elastic branch 102 of the clamp 100 undergoes elastic deformation and retracts into the locking ring.

[0057] It should be noted that the pen barrel 200 also contains a core storage tube and a locking ring. The locking ring, core storage tube, and snap fastener can be pre-installed in the pen barrel 200 during the previous (or multiple) processes. The core storage tube is connected to the snap fastener. In other words, in the pen barrel mounting position of this embodiment, the pen barrel 200 contains a locking ring, a snap fastener, and a core storage tube, with the core storage tube located below the snap fastener. The core storage tube, snap fastener, and their connection method are all things that those skilled in the art should understand and are well-known and easily implemented by them; therefore, they will not be described in detail in this embodiment.

[0058] In some embodiments, see Figures 12 to 16 As shown, the clamp fixing device 50 includes a second drive unit 51, a tightening sleeve 52, a second reciprocating drive mechanism 53, and a pressure rod 54. The second drive unit 51 and the second reciprocating drive mechanism 53 are both connected to the lifting device 20. The second drive unit 51 can drive the tightening sleeve 52 to rotate around its own axis. The end of the tightening sleeve 52 near the clamp 100 is provided with a frustum-shaped recess 521. The end of the frustum-shaped recess 521 with a larger opening is close to the clamp 100. The lifting device 20 can drive the surface of the frustum-shaped recess 521 to contact the elastic branch 102 of the clamp 100, so that the elastic branch 102 retracts inward. The pressure rod 54 passes through the tightening sleeve 52. The second reciprocating drive mechanism 53 can drive the pressure rod 54 to move downward, so as to fix the insertion rod 101 of the clamp 100 onto the snap member inside the pen barrel 200.

[0059] For example, the clamp fixing device 50 also includes a mounting bracket 55. The second reciprocating drive mechanism 53 and the second drive unit 51 are both connected to the second lifting shaft 202 through the mounting bracket 55, and then connected to the second cam 222 through the second lifting shaft 202. The second reciprocating drive mechanism 53 can be a cylinder, an electric cylinder or other linear reciprocating drive mechanism.

[0060] The rotation of the second drive shaft 22 drives the second cam 222 to rotate, which in turn drives the second lifting shaft 202 to descend. This causes the second drive unit 51, the tightening sleeve 52, the second reciprocating drive mechanism 53, and the pressure rod 54 to descend together. At this time, the surface of the frustum-shaped recess 521 contacts the elastic branch 102 of the chuck 100. Simultaneously, the second drive unit 51 drives the tightening sleeve 52 to rotate around its own axis. That is, the tightening sleeve 52 rotates and descends at the same time. The surface of the frustum-shaped recess 521 can apply an inward contracting force to the elastic branch 102 of the chuck 100, causing the elastic branch 102 to undergo elastic deformation and contract inward. The second reciprocating drive mechanism 53 drives the pressure rod 54 to move downward. The pressure rod 54 pushes the chuck 100 downward to fix the insertion rod 101 of the chuck 100 onto the snap-fit ​​member inside the pen barrel 200. The elastic branch 102 can then be contracted within the locking ring.

[0061] In some embodiments, the second drive unit 51 includes a telescopic device 511, a rack 512, and a gear 513. The cylinder of the telescopic device 511 is connected to the lifting device 20, the piston rod of the telescopic device 511 is connected to the rack 512, the gear 513 meshes with the rack 512, and the tightening sleeve 52 is fixedly connected to the gear 513 and coaxially arranged.

[0062] For example, the telescopic device 511 can be a cylinder, the cylinder body of which is mounted on the mounting bracket 55. The piston rod of the cylinder is fixedly connected to the rack 512 via an adapter. The gear 513 can be mounted on the mounting bracket 55. Specifically, the mounting bracket 55 is provided with a mounting part, which has a cavity for the pressure rod 54 to pass through. The gear 513 is mounted on the mounting part via a rotating shaft located inside the cavity. The rotating shaft has a hollow structure to allow the pressure rod 54 to pass through. The tightening sleeve 52 is fixedly connected to the gear 513 and coaxially arranged. The tightening sleeve 52 is located below the gear 513.

[0063] The automatic pencil production system provided in this embodiment of the disclosure, by using the workpiece mounting equipment provided in this embodiment of the disclosure, can ensure the flipping accuracy and consistency of the chuck 100 during the installation process, improve the alignment success rate, assembly reliability and production efficiency, and at the same time reduce the risk of damage to the chuck due to interference, collision or squeezing.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A workpiece mounting device, wherein the workpiece has a first part and a second part, characterized in that, The workpiece mounting device includes a first reciprocating drive mechanism, a lifting device, a first clamping part, a flipping mechanism, and a second clamping part. The first reciprocating drive mechanism is connected to the lifting device. The first clamping part is installed on the first reciprocating drive mechanism and is used to clamp a first part of the workpiece and place the workpiece in the flipping mechanism. The second part of the workpiece is located in the flipping mechanism, and the first part is located above the second part. The flipping mechanism is capable of rotating 180° so that the first part of the workpiece is located below the second part; The second gripping part is installed on the first reciprocating drive mechanism and is used to place the workpiece in the flipping mechanism at the target station, wherein the second gripping part is used to grip the second part of the workpiece.

2. The workpiece mounting equipment according to claim 1, characterized in that, The flipping mechanism includes a first driving part and a flipping part. The first driving part can drive the flipping part to rotate 180° around a set axis. The flipping part is provided with a placement cavity. Along the movement direction of the lifting device, the placement cavity has a first end and a second end. Along the extension direction of the set axis, the size of the first end is larger than the size of the second end. The first clamping part is used to put the workpiece into the placement cavity from the first end, wherein the second part of the workpiece abuts against the cavity wall of the placement cavity.

3. The workpiece mounting equipment according to claim 2, characterized in that, The flipping part includes two halves, each half being provided with a guide groove. The width of the guide groove gradually decreases from one end to the other end. The two groove walls of the guide groove are inclined relative to the extension direction of the guide groove. The two halves are fastened together, and the guide groove on one half is opposite to the groove opening of the guide groove on the other half to form the placement cavity. The groove wall and the bottom of the guide groove together form the cavity wall of the placement cavity.

4. The workpiece mounting equipment according to claim 1, characterized in that, The first reciprocating drive mechanism includes a linear guide rail, which is connected to the lifting device. The first clamping part and the second clamping part are both connected to the linear guide rail, and the second clamping part is located on the side of the first clamping part closer to the target station.

5. An automatic pencil production system, comprising the workpiece mounting equipment according to any one of claims 1 to 4, wherein, The workpiece is a chuck, which includes a insert rod and an elastic branch, wherein the insert rod is the first part and the elastic branch is the second part.

6. The automatic pencil production system according to claim 5, characterized in that, It also includes a frame and a turntable. The lifting device and the turntable are both mounted on the frame. The turntable can rotate relative to the frame about its own axis. The turntable has multiple pen barrel mounting positions arranged circumferentially for supporting the pen barrel.

7. The automatic pencil production system according to claim 6, characterized in that, It also includes a chuck fixing device, which is located on the outer periphery of the turntable and downstream of the workpiece mounting device in the rotation direction of the turntable. The chuck fixing device is used to fix the insert of the chuck onto the snap-fit ​​inside the pen barrel and to retract the elastic branch of the chuck into the locking ring inside the pen barrel.

8. The automatic pencil production system according to claim 7, characterized in that, The clamp fixing device includes a second drive unit, a tightening sleeve, a second reciprocating drive mechanism, and a pressure rod. The second drive unit and the second reciprocating drive mechanism are both connected to the lifting device. The second drive unit can drive the tightening sleeve to rotate around its own axis. The end of the tightening sleeve near the clamp is provided with a frustum-shaped recess. The end of the frustum-shaped recess with a larger opening is close to the clamp. The lifting device can drive the surface of the frustum-shaped recess to contact the elastic branch of the clamp, so that the elastic branch retracts inward. The pressure rod passes through the tightening sleeve. The second reciprocating drive mechanism can drive the pressure rod to move downward, so as to fix the insertion rod of the clamp onto the snap-fit ​​inside the pen barrel.

9. The automatic pencil production system according to claim 8, characterized in that, The second drive unit includes a telescopic device, a rack, and a gear. The cylinder of the telescopic device is connected to the lifting device, the piston rod of the telescopic device is connected to the rack, the gear meshes with the rack, and the tightening sleeve is fixedly connected to the gear and coaxially arranged.

10. The automatic pencil production system according to claim 9, characterized in that, The clamp fixing device also includes a mounting bracket. The second reciprocating drive mechanism and the second drive unit are both connected to the lifting device through the mounting bracket. The cylinder of the telescopic device is mounted on the mounting bracket. The piston rod of the telescopic device is fixedly connected to the rack through an adapter. The gear is mounted on the mounting bracket.

11. The automatic pencil production system according to claim 10, characterized in that, The mounting bracket is provided with a mounting part, the mounting part is provided with a cavity for the pressure rod to pass through, the gear is mounted on the mounting part via a rotating shaft, the rotating shaft is located in the cavity, and the rotating shaft is a hollow structure to allow the pressure rod to pass through.

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