Cylindrical cylinder workpiece printing machine

Abstract

A rotary table, a top rotating mechanism and a printing wheel are arranged on a workbench, the rotary table can rotate relative to the workbench, a plurality of inner supporting mechanisms are arranged on the rotary table, the distances between the inner supporting mechanisms and the central axis of the rotary table are equal, and each inner supporting mechanism comprises an inner supporting rod rotationally installed on the rotary table; the right end of the inner supporting rod penetrates through the rotating disc and extends to the other side of the rotating disc, the jacking and rotating mechanism and the rotating disc are arranged on the two sides of the right end of the inner supporting rod correspondingly, and the jacking and rotating mechanism comprises an ejector pin, an ejector pin base, an ejector pin driving part and a rotating driving part; the ejector pin is rotatably installed on the ejector pin base, the rotary driving piece is used for driving the ejector pin to rotate, the printing wheel is rotatably arranged on the workbench, and the moving directions of a rotating shaft of the printing wheel, the inner supporting rod and the ejector pin base are all parallel to the central axis of the rotating disc. Printing work is automatically completed, the automation degree is high, and the production efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printing equipment, in particular to a cylindrical barrel workpiece printing machine. BACKGROUND

[0002] A pencil with a rubber usually has a cylindrical barrel metal cap at one end, and the rubber is arranged in the metal cap. In order to make the pencil more attractive and enhance the aesthetic appearance to attract more consumers, the outer cylindrical surface of the metal cap is usually printed with color, and some are even printed with some spaced stripes. The existing printing equipment is difficult to complete such printing work of the pencil metal cap, so the pencil metal cap is usually printed manually by workers, which is low in production efficiency and high in labor cost, thereby increasing the production cost of enterprises. SUMMARY

[0003] In order to solve the above problems, the present application provides a cylindrical barrel workpiece printing machine, which automatically completes the printing work of the outer cylindrical surface of the cylindrical barrel workpiece by means of machinery, so as to improve the production rate.

[0004] In order to achieve the above purpose, the cylindrical barrel workpiece printing machine provided by the present application comprises a workbench, characterized in that the workbench is provided with a rotating disc, a top rotating mechanism and a printing wheel. The rotating disc is rotatable relative to the workbench. The rotating disc is provided with a plurality of inner support mechanisms equidistant from the central axis of the rotating disc. The inner support mechanism comprises an inner support rod rotatably mounted on the rotating disc. The right end of the inner support rod penetrates the rotating disc and extends to the other side of the rotating disc. The top rotating mechanism and the rotating disc are respectively located on the two sides of the right end of the inner support rod. The top rotating mechanism comprises a thimble, a thimble seat, a thimble driving element and a rotating driving element. The thimble seat is movable leftward and rightward relative to the workbench. The thimble driving element is used to drive the thimble seat to move. The thimble is rotatably mounted on the thimble seat. The rotating driving element is used to drive the thimble to rotate. The rotating disc can be rotated to rotate the inner support rod to a position opposite to the thimble. The thimble can be inserted into the right end of the inner support rod opposite to the thimble by moving and support the right end of the inner support rod, so that the cylindrical barrel workpiece sleeved on the right end of the inner support rod cannot rotate relative to the inner support rod. The printing wheel is rotatably arranged on the workbench. The rotation shaft of the printing wheel, the inner support rod and the moving direction of the thimble seat are all parallel to the central axis of the rotating disc. The outer cylindrical surface of the cylindrical barrel workpiece sleeved on the inner support rod opposite to the thimble is in contact with the wheel surface of the printing wheel.

[0005] The cylindrical barrel workpiece printing machine provided by the present application sleeves the cylindrical barrel workpiece on the right end of the inner support rod, rotates the rotating disc, rotates the cylindrical barrel workpiece to a position opposite to the thimble, moves the thimble to insert into the right end of the inner support rod, and drives the inner support rod and the workpiece to rotate together. The pigment on the wheel surface of the printing wheel is printed on the workpiece. The printing work is automatically completed, the degree of automation is high, the production efficiency is greatly improved, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1Structure schematic diagram of cylindrical barrel workpiece printing machine; Figure 2 Structure schematic diagram of part of cylindrical barrel workpiece printing machine; Figure 3 Structure schematic diagram of another view of structure in Figure 2 Figure 4 Sectional view of inner supporting mechanism; Figure 5 Structure schematic diagram of part of cylindrical barrel workpiece printing machine; Figure 6 Structure schematic diagram of another view of structure in Figure 5

[0007] The application will be described in further detail below with reference to the drawings. DETAILED DESCRIPTION

[0008] Referring to Figures 1 to 3 , the cylindrical barrel workpiece printing machine comprises a workbench 1, a rotating disc 2, a rotating disc driving element 21 and a rotating disc rotating shaft 22 are arranged on the workbench 1, the rotating disc 2 is vertically placed, the rotating disc rotating shaft 22 penetrates the center of the rotating disc 2 and is installed together with the rotating disc 2, and the rotating shaft 22 is rotatably installed on the workbench 1 through a bearing. A belt pulley is installed on the rotating shaft 22, the rotating disc driving element 21 drives the rotating disc 2 to rotate through belt transmission, and the rotating disc driving element 21 is preferably a motor.

[0009] A plurality of inner supporting mechanisms are arranged on the rotating disc 2, and the distance from each inner supporting mechanism to the center axis of the rotating disc 2 is equal, that is, the plurality of inner supporting mechanisms are arranged on a circumference of the rotating disc 2 and are arranged at equal intervals on the same circumference. Referring to Figure 4 The inner supporting mechanism comprises an inner supporting rod 31, a pushing sleeve 32, a spring 33 and an outer sleeve 34 which are coaxially arranged from inside to outside in sequence. The right end of the outer sleeve 34 is fixed on the rotating disc 2, the left end of the outer sleeve 34 has an end ring extending to the inside, and the end ring is provided with a through hole 35. The inner supporting rod 31 is rotatably installed on the end ring of the outer sleeve 34 through a bearing and is parallel to the center axis of the rotating disc 3, the right end of the inner supporting rod 31 penetrates the rotating disc 2 and extends to the other side of the rotating disc. The left end of the pushing sleeve 32 is in the outer sleeve 34 and has a boss 36 extending to the outside, the boss 36 extends to the outside of the through hole of the outer sleeve 34 in the radial direction, the right end of the pushing sleeve 32 penetrates the rotating disc 2 and extends to the other side of the rotating disc, and the pushing sleeve 32 can move back and forth along the axial direction relative to the rotating disc 2 and the inner supporting rod 31. The spring 33 is between the pushing sleeve 32 and the outer sleeve 34, and the two ends of the spring 33 are respectively pressed on the rotating disc 2 and the boss 36 of the pushing sleeve 32. The cylindrical barrel workpiece is sleeved on the right end of the inner supporting rod 31, and through the rotation of the rotating disc 2, the workpiece can be brought to different workstations.

[0010] Referring to Figure 2 and Figure 3 ​​The feeding mechanism is arranged on the workbench 1, and the feeding mechanism and the rotating disc 2 are respectively arranged at two sides of right ends of the inner supporting rods 31, that is, the right ends of the inner supporting rods 31 are between the feeding mechanism and the rotating disc 2. The feeding mechanism comprises a feeding box 4, a feeding push rod 41 and a feeding driving member 42. The feeding box 4 has a feeding groove 40 and a feeding hole, the feeding groove 40 is open upward and connected with a vibrating disc, and the workpiece enters the feeding groove 40 in a lying posture through vibration. The feeding hole extends linearly from the bottom of the feeding groove 40 and penetrates through the feeding box 4. The feeding driving member 42 is connected with the feeding push rod 41 and used for driving the feeding push rod 41 to insert into the feeding hole and move along the feeding hole, so that the workpiece at the bottom of the feeding groove 40 is pushed out of the feeding hole to the outside of the feeding box 4. The feeding driving member 42 is preferably a pneumatic cylinder. The rotating disc 2 rotates, so that the inner supporting rod 31 of one of the inner supporting mechanisms rotates to a position opposite to the feeding hole of the feeding box 4. The feeding push rod 41 pushes the cylindrical barrel workpiece at the bottom of the feeding groove 40 to the inner supporting rod 31, and the cylindrical barrel workpiece is externally sleeved on the right end of the inner supporting rod 31. After the feeding is completed, the rotating disc 2 is rotated, so that the workpiece is rotated to the next printing station.

[0011] The top rotating mechanism is arranged on the workbench 1, and the top rotating mechanism and the rotating disc 2 are respectively arranged at two sides of right ends of the inner supporting rods 31, that is, the right ends of the inner supporting rods 31 are between the top rotating mechanism and the rotating disc 2. The top rotating mechanism comprises a top pin 5, a top pin seat 50, a top pin driving member 51 and a rotating driving member 52. The top pin seat 50 is movably arranged on the workbench 1 and can move leftward and rightward relative to the workbench 1, and the moving direction is parallel to the central axis direction of the rotating disc 2. The top pin driving member 51 is arranged on the workbench 1 and connected with the top pin seat 50, and is used for driving the top pin seat 50 to move. The top pin driving member 51 is preferably a pneumatic cylinder. The top pin 5 is rotatably installed on the top pin seat 50 and can rotate relative to the top pin seat 50. The top pin 5 is connected with a belt pulley 54 and rotates together with the belt pulley 54. The rotating driving member 52 is rotatably installed on the workbench 1 and connected with the belt pulley 53, and is used for driving the belt pulley 53 to rotate. The rotating driving member 52 is preferably an electric motor. A belt (not shown in the figure) cooperates with the belt pulley 54 and the belt pulley 53, and the rotating driving member 52 drives the top pin 5 to rotate through the belt transmission. The rotating disc 2 rotates, so that the inner supporting rod 31 sleeved with the cylindrical barrel workpiece is rotated to a position opposite to the top pin 5. The top pin driving member 51 pushes the top pin 5 and the top pin seat 50 together to the inner supporting rod 31, the top pin 5 is inserted into the right end of the inner supporting rod 31, and the right end of the inner supporting rod is enlarged by the top pin 5, so that the cylindrical barrel workpiece on the end head of the inner supporting rod cannot rotate relative to the inner supporting rod 31. Then the rotating driving member 52 is started, so that the top pin 5 rotates, and the top pin 5 drives the inner supporting rod 31 and the cylindrical barrel workpiece on the inner supporting rod 31 to rotate together.

[0012] Referring to Figure 1The printing wheel 6 is rotatably arranged on the workbench 1 and has its rotation axis parallel to the central axis of the turntable 2 and on the side of the turntable 3. The cylindrical surface of the cylindrical workpiece sleeved on the inner supporting rod 31 opposite to the ejector pin 5 is in contact with the surface of the printing wheel 6, and the cylindrical surface of the cylindrical workpiece rotating with the inner supporting rod 31 is printed with the pigment on the surface of the printing wheel 6. The surface of the printing wheel 6 has a concave groove inwardly, and the groove cannot print a pattern on the workpiece, so the printing wheel 6 can print a stripe on the workpiece.

[0013] The workbench 1 is further provided with an ejection mechanism including an ejection push rod 7 and an ejection driving member 70. The ejection push rod 7 is parallel to the central axis of the turntable 2 and connected with the ejection driving member 70. The ejection driving member 70 is used to drive the ejection push rod to move along the longitudinal direction of the ejection push rod, and is preferably a pneumatic cylinder. The chain 72 of the chain transmission mechanism is provided with a plurality of long pins 71, and the long pins 71 and the ejection push rod 7 of the ejection mechanism are respectively arranged on the two sides of the turntable 2. The chain 72 passes through the drying oven 73. After printing, the turntable 2 rotates the inner supporting rod 31 sleeved with the printed workpiece to the ejection position. At this position, the outer sleeve 34 is opposite to the ejection push rod 7. The ejection push rod 7 can be inserted into the through hole 35 of the outer sleeve 34 opposite to it by moving, and pushes the outer sleeve 34 to the right end. The outer sleeve 34 pushes the cylindrical workpiece sleeved on the right end of the inner supporting rod 31 away from the inner supporting rod 31. At this time, the chain 72 has moved one long pin 71 to the position opposite to the ejection push rod 7. The workpiece is pushed away from the inner supporting rod 31 and sleeved on the long pin 71 at the same time. The chain 72 continues to move and brings the workpiece sleeved on the long pin 71 into the drying oven 73 for drying.

[0014] Referring to Figure 5 and Figure 6 , the workbench 1 is further provided with a sliding seat driving member 62 and a movable sliding seat 61. The sliding seat 61 can move relative to the workbench 1, and the moving direction is perpendicular to the central axis of the turntable 2. The sliding seat driving member is used to drive the sliding seat 61 to move. The printing transmission wheel 63 and the printing wheel 6 are rotatably arranged on the sliding seat 61 and can rotate relative to the sliding seat 61. The rotation axes of the printing transmission wheel 63 and the printing wheel 6 are parallel, and the surfaces of the two are in contact. The sliding seat 61 is provided with a printing wheel driving member 60 for driving the printing wheel 6 to rotate. Starting the printing wheel driving member 60, the printing wheel 6 and the printing transmission wheel 63 rotate together, and the pigment on the surface of the printing transmission wheel 63 is transferred to the printing wheel 6.

[0015] The workbench 1 is further provided with a first rubber-coated roller 81, a moving rubber-coated roller 84, a second rubber-coated roller 82, a reciprocating screw 88, a swing rubber-coated roller 85 and a third rubber-coated roller 83, all of which have rotation shafts parallel to the rotation shaft of the printing wheel 6. A roller driving member 8 is arranged on the workbench 1 to drive the first rubber-coated roller 81 to rotate. The first rubber-coated roller 81 is connected to the second rubber-coated roller 82 through a belt transmission to drive the second rubber-coated roller 82 to rotate. The second rubber-coated roller 82 is connected to the reciprocating screw 88 through a belt transmission to drive the reciprocating screw 88 to rotate. The swing rubber-coated roller 85 is rotatably arranged on a connecting block 87, and the connecting block 87 is provided with a nut matched with the reciprocating screw 88. The reciprocating screw 88 rotates to drive the nut matched therewith to move back and forth along the reciprocating screw 88. The swing rubber-coated roller 85 moves together with the connecting block 87 and can rotate relative to the connecting block 87. The third rubber-coated roller 83 is rotatably arranged on the workbench. The swing rubber-coated roller 85 is between the second rubber-coated roller 82 and the third rubber-coated roller 83 and is in contact with the second rubber-coated roller 82 and the third rubber-coated roller 83. The second rubber-coated roller 82 drives the swing rubber-coated roller 85 to rotate, and the swing rubber-coated roller 85 drives the third rubber-coated roller 83 to rotate. The pigment on the second rubber-coated roller 82 is transmitted to the third rubber-coated roller 83 through the swing rubber-coated roller 85. The moving rubber-coated roller 84 is rotatably arranged on a roller moving seat 89, and the roller moving seat 89 is movably arranged on the workbench 1. A roller moving driving member 86, which is preferably an air cylinder, is connected to the roller moving seat 89 to drive the roller moving seat 89 to move. The moving rubber-coated roller 84 is between the first rubber-coated roller 81 and the second rubber-coated roller 82 and can move back and forth between a position in contact with the first rubber-coated roller 81 and a position in contact with the second rubber-coated roller 82 to transmit the printing pigment on the first rubber-coated roller 81 to the second rubber-coated roller 82. A pigment tank (not shown in the figure) containing printing pigment is arranged below the first rubber-coated roller 81, and the first rubber-coated roller 81 carries the pigment on its body through rotation. The transmission path of the pigment is the pigment tank, the first rubber-coated roller 81, the moving rubber-coated roller 84, the second rubber-coated roller 82, the swing rubber-coated roller 85 and the third rubber-coated roller 83. The slide 61 moves towards the third rubber-coated roller 83 to make the printing transmission wheel 63 in contact with the third rubber-coated roller 83, and the pigment on the third rubber-coated roller 83 is transmitted to the printing wheel 6 through the printing transmission wheel 63. The slide 61 moves away from the third rubber-coated roller 83 to make the printing wheel 6 in contact with the workpiece to print the pigment on the printing wheel 6 onto the workpiece. The printing wheel is automatically switched between the receiving pigment position and the printing position through the movement of the slide, and the printing wheel can automatically and endlessly print after receiving the pigment and then printing, which has good automation degree and high production efficiency. The printing pigment is automatically transmitted to the printing wheel 6 through the above structure, the pigment on the printing wheel is more uniform, the printing quality is better, and the production efficiency is higher.

[0016] The cylindrical barrel workpiece printing machine provided by the application has the following advantages: the feeding mechanism is used to put the cylindrical barrel workpiece on the right end of the inner supporting rod, the rotating disc is rotated to rotate the cylindrical barrel workpiece to the position opposite to the ejector pin, the ejector pin is moved to be inserted into the right end of the inner supporting rod, and the inner supporting rod and the workpiece are rotated together, the pigment on the surface of the printing wheel is printed on the workpiece, after the printing is completed, the rotating disc is rotated to rotate the printed workpiece to the position opposite to the discharging push rod, the discharging push rod is inserted into the through hole of the outer sleeve, the push sleeve is pushed outwards, the push sleeve pushes the printed workpiece on the inner supporting rod away from the inner supporting rod, and the workpiece is put on the long pin of the chain after leaving the inner supporting rod, and the chain carries the workpiece into the drying oven for drying. The application integrates the feeding, printing and drying processes, and is fully automated, has high automation degree, greatly improves the production efficiency, and reduces the production cost. The application is designed for printing of pencil metal caps, and is suitable for printing of all cylindrical barrel workpieces.

Claims

1. A cylindrical barrel workpiece printer comprising a worktable, characterised in that, The workbench is provided with a rotating disc, a top rotating mechanism and a printing wheel. The rotating disc is rotatable relative to the workbench. The rotating disc is provided with a plurality of inner supporting mechanisms equidistant from the central axis of the rotating disc. The inner supporting mechanism comprises an inner supporting rod rotatably mounted on the rotating disc. The right end of the inner supporting rod penetrates the rotating disc and extends to the other side of the rotating disc. The top rotating mechanism and the rotating disc are respectively on the two sides of the right end of the inner supporting rod. The top rotating mechanism comprises a top pin, a top pin seat, a top pin driving member and a rotating driving member. The top pin seat is movable leftward and rightward relative to the workbench. The top pin driving member is used for driving the top pin seat to move. The top pin is rotatably mounted on the top pin seat. The rotating driving member is used for driving the top pin to rotate. Rotating the rotating disc can rotate the inner supporting rod to a position opposite to the top pin. The top pin can be inserted into the right end of the inner supporting rod opposite to the top pin by moving and support the right end of the inner supporting rod to make a cylindrical barrel workpiece sleeved on the right end of the inner supporting rod unable to rotate relative to the inner supporting rod. The printing wheel is rotatably arranged on the workbench. The rotating shaft of the printing wheel, the moving direction of the inner supporting rod and the top pin seat are all parallel to the central axis of the rotating disc. The outer cylindrical surface of the cylindrical barrel workpiece sleeved on the inner supporting rod opposite to the top pin is in contact with the wheel surface of the printing wheel.

2. The cylindrical barrel workpiece printer of claim 1, wherein, The inner supporting mechanism comprises the inner supporting rod, a pushing sleeve, a spring and an outer sleeve coaxially arranged from inside to outside. The outer sleeve is fixed on the rotating disc. The left end of the outer sleeve has an end ring extending inward. The end ring is provided with a through hole. The inner supporting rod is rotatably mounted on the end ring of the outer sleeve through a bearing. The left end of the pushing sleeve is in the outer sleeve and has a boss extending outward. The boss extends to the outside of the through hole of the outer sleeve. The right end of the pushing sleeve penetrates the rotating disc and extends to the other side of the rotating disc. The pushing sleeve is movable back and forth along the axial direction of the pushing sleeve relative to the rotating disc. The two ends of the spring are respectively pressed on the rotating disc and the boss of the pushing sleeve.

3. The cylindrical barrel workpiece printer of claim 2, wherein, The workbench is further provided with a discharging mechanism. The discharging mechanism comprises a discharging push rod and a discharging driving member. The discharging push rod is parallel to the central axis of the rotating disc and connected with the discharging driving member. The discharging driving member is used for driving the discharging push rod to move along the longitudinal direction of the discharging push rod. Rotating the rotating disc can rotate the outer sleeve to a position opposite to the discharging push rod. The discharging push rod can be inserted into the through hole of the outer sleeve opposite to the discharging push rod by moving.

4. The cylindrical barrel workpiece printer of claim 3, wherein, The workbench is further provided with a feeding mechanism. The feeding mechanism and the rotating disc are respectively on the two sides of the right end of the inner supporting rod. The feeding mechanism comprises a feeding box, a feeding push rod and a feeding driving member. The feeding box has a feeding groove and a feeding hole. The feeding hole extends linearly from the bottom of the feeding groove and penetrates the feeding box. The feeding driving member is used for driving the feeding push rod to be inserted into the feeding hole. Rotating the rotating disc can rotate the inner supporting rod to a position opposite to the feeding hole.

5. The cylindrical barrel workpiece printer of claim 4, wherein, The chain transmission mechanism and an oven are further included. A plurality of long pins are arranged on the chain of the chain transmission mechanism. The long pins and the discharging push rod of the discharging mechanism are respectively on the two sides of the rotating disc. The chain can drive the long pins to move to a position opposite to the discharging push rod. The chain passes through the oven.

6. The cylindrical barrel workpiece printer of claim 5, wherein, The workbench is further provided with a slide driving element and a movable slide, the moving direction of the slide is perpendicular to the central axis of the rotary disc, the slide driving element is used for driving the slide to move, the printing transfer wheel and the printing wheel are rotatably arranged on the slide, the rotation shafts of the printing transfer wheel and the printing wheel are parallel, and the wheel surfaces of the printing transfer wheel and the printing wheel are in contact, and the slide is provided with a printing wheel driving element used for driving the printing wheel to rotate.

7. The cylindrical barrel workpiece printer of claim 6, wherein, The workbench is further provided with a first rubber-coated roller, a movable rubber-coated roller, a second rubber-coated roller, a reciprocating screw, a swing rubber-coated roller and a third rubber-coated roller, the rotation shafts of the rollers are parallel to the rotation shaft of the printing wheel, a roller driving element is used for driving the first rubber-coated roller to rotate, the first rubber-coated roller is connected with the second rubber-coated roller through belt transmission, the second rubber-coated roller is connected with the reciprocating screw through belt transmission, the swing rubber-coated roller is rotatably arranged on a connecting block, the connecting block is provided with a nut matched with the reciprocating screw, the swing rubber-coated roller is in contact with the second rubber-coated roller and the third rubber-coated roller, the movable rubber-coated roller is rotatably arranged on a roller moving seat, the roller moving seat is movably arranged on the workbench, a roller moving driving element is used for driving the roller moving seat to move, the movable rubber-coated roller can move back and forth between a position in contact with the first rubber-coated roller and a position in contact with the second rubber-coated roller, and a pigment tank is arranged below the first rubber-coated roller.

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