Rotary clamping head and rotary clamping device of circular tube screen printing machine

Abstract

The utility model relates to the technical field of wires, in particular to a rotary chuck of a circular tube screen printing machine, which comprises a rotary clamping shaft, a connecting shaft sleeve, a chuck and a locking nut, one end of the connecting shaft sleeve is axially and concavely provided with a sleeving hole, the other end of the connecting shaft sleeve is axially and concavely provided with a taper hole, the outer side wall of the other end of the connecting shaft sleeve is provided with an external thread, and the conical part of the chuck is inserted into the taper hole. The clamping portion of the clamping head extends out of the taper hole, the locking nut is in threaded connection with the external thread and arranged outside the clamping portion of the clamping head in a sleeved mode, the clamping portion of the clamping head abuts against the inner wall of the locking nut, an inserting column is arranged at one end of the rotating clamping shaft, the inserting column penetrates through a center hole of the locking nut and then is inserted into the locking portion of the clamping head, and a sleeving section is arranged at the other end of the rotating clamping shaft. The diameter of the inserting column and the diameter of the sleeving section are both smaller than the diameter of the rotating clamping shaft. Modularized assembly of the rotary clamping head is achieved, disassembly, assembly and maintenance are convenient, production and manufacturing are convenient, the centerless grinding machine can grind the rotary clamping shaft, the coaxiality is good, and the printing quality of a round pipe can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wires, in particular to a rotating chuck and a rotating chuck device of a round tube screen printing machine. Background Art

[0002] When printing on the peripheral wall of a round tube, the round tube needs to be sleeved on the outside of the rotary chuck. When the screen printing machine prints on the round tube, the rotary chuck drives the round tube to rotate.

[0003] Among the existing patents, the Chinese patent document with application number 202322549782.1 discloses a curved printing clamping fixture for stainless steel round tube substrates, including two clamping ends installed on a linear guide rail of a base, and a linear drive mechanism drives the two clamping ends to move closer along the linear guide rail to clamp the printing substrate port, and the rotary drive mechanism also drives the printing substrate to rotate through the clamping end; the clamping end includes a cylindrical root and a truncated cone-shaped clamping portion, and a plurality of long grooves are evenly distributed on the side of the truncated cone-shaped clamping portion; a support ball group for the printing substrate is provided corresponding to the side of the truncated cone-shaped clamping portion.

[0004] In addition, the applicant applied for a Chinese patent document with application number 202323505136.1 on December 21, 2023, disclosing a curved screen printing machine, including a frame, a clamping assembly, a printing assembly arranged on the frame, and an adjustment assembly arranged on the frame, the clamping assembly including a clamping base plate connected to the output end of the adjustment assembly, a rotating drive mechanism arranged on the clamping base plate, a first jig connected to the output end of the rotating drive mechanism, a clamping seat slidably arranged on the clamping base plate, a clamping drive arranged on the clamping seat, a second jig rotatably arranged on the clamping seat, a support seat arranged on the clamping base plate, and a bearing assembly rotatably arranged on the support seat; the output end of the clamping drive is connected to the clamping base plate.

[0005] The clamping end and the first or second fixture in both patents are integrated. While simple in structure, damage requires complete replacement, resulting in high maintenance costs and wasteful use of resources. This presents significant drawbacks, necessitating an urgent solution. Utility Model Content

[0006] In order to solve the above technical problems, the purpose of the present utility model is to provide a rotary chuck and a rotary chuck device for a round tube screen printing machine.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A rotary chuck of a round tube screen printing machine, which includes a rotary chuck shaft, a coupling sleeve, a chuck and a locking nut. One end of the coupling sleeve is axially recessed with a sleeve hole, the other end of the coupling sleeve is axially recessed with a tapered hole, the outer side wall of the other end of the coupling sleeve is provided with an external thread, the tapered part of the chuck is inserted into the tapered hole, the clamping part of the chuck extends out of the tapered hole, the locking nut is threadedly connected to the external thread and sleeved on the outside of the clamping part of the chuck, the clamping part of the chuck contacts the inner wall of the locking nut, one end of the rotary chuck shaft is provided with a plug post, the plug post passes through the center hole of the locking nut and is inserted into the locking part of the chuck, the locking part of the chuck is used to clamp the plug post, and the other end of the rotary chuck shaft is provided with a sleeve section, the diameters of the plug post and the sleeve section are both smaller than the diameter of the rotary chuck shaft.

[0009] Furthermore, a conical surface is provided on a peripheral wall of the free end of the sleeve section.

[0010] Furthermore, a locking hole communicating with the sleeve hole is provided in the radial direction of the coupling sleeve.

[0011] Furthermore, the lock hole is detachably connected to a lock piece.

[0012] Furthermore, the rotary chuck of the round tube screen printing machine also includes a base body and a rotary driver installed on the base body, and a rotating shaft of the rotary driver is inserted into the sleeve hole of the coupling sleeve.

[0013] The utility model also provides a chuck device, comprising a base and the chuck head of the above-mentioned round tube screen printing machine, wherein the two chuck heads are arranged opposite to each other, the base body of the first chuck head is fixedly mounted on one end of the base, and the base body of the second chuck head is slidably connected to the base.

[0014] Furthermore, the chuck device also includes a movable driver installed on the base, a driving end of the movable driver is connected to the base body of the second chuck head, and the movable driver is used to drive the second chuck head to approach or move away from the first chuck head.

[0015] Furthermore, the chuck device further includes a hosting component disposed on the base and located between the two chuck heads.

[0016] Furthermore, the hosting assembly includes a base arranged on the base, a mounting seat installed on the base and two hosting rotating parts rotatably connected to the mounting seat. The axes of the two hosting rotating parts are parallel to the axis of the clamping shaft, and a hosting groove is formed between the two hosting rotating parts.

[0017] Furthermore, the base of the chuck is equipped with a support arm, the chuck shaft is located above the support arm, and the support arm is rotatably connected to two support shaft rotating parts. The axes of the two support shaft rotating parts are parallel to the axis of the chuck shaft. A support shaft groove is formed between the two support shaft rotating parts. The chuck shaft of the chuck is located in the support shaft groove, and the support shaft rotating parts roll against the outer wall of the chuck shaft.

[0018] The beneficial effects of the present invention are as follows: during assembly, the coupling hole of the coupling sleeve is fitted onto the outside of the rotating shaft of the rotary driver, the tapered portion of the chuck is inserted into the tapered hole of the coupling sleeve, the locking nut is fitted onto the outside of the external thread of the coupling sleeve, and then the pin of the chuck shaft is inserted through the center hole of the locking nut and into the clamping hole of the locking portion of the chuck. One end face of the chuck shaft contacts the outer end face of the locking nut. Finally, the locking nut is tightened so that the locking nut is screwed into the coupling sleeve. The inner wall of the locking nut presses the locking portion of the chuck, tightening and clamping the pin. In actual application, a round tube is fitted onto the outside of the coupling section, and one end face of the round tube contacts the other end face of the chuck shaft. During the process of printing on the round tube by the screen printer, the rotary driver drives the coupling sleeve, the chuck, the locking nut, the chuck shaft, and the round tube to rotate synchronously, so that the screen printer can perform screen printing on the circumferential wall of the round tube. The utility model realizes modular assembly of the rotary chuck, which is convenient for disassembly, assembly and maintenance and easy for production and manufacturing. The centerless grinder can grind the rotary chuck shaft with good coaxiality, which is beneficial to improving the printing quality of the round tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the rotary chuck of the present utility model.

[0020] Figure 2 It is a cross-sectional view of the rotary chuck of the present utility model.

[0021] Figure 3 This is a schematic diagram of the exploded structure of the rotary chuck of the present utility model.

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamping device of the utility model clamping a round tube.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the clamping device of the present invention.

[0024] Description of reference numerals:

[0025] 1. Clamp shaft; 2. Coupling sleeve; 3. Collet; 4. Locking nut; 5. Socket hole; 6. Tapered hole; 7. Insert column; 8. Socket section; 9. Tapered surface; 10. Base; 11. Rotating drive; 12. Base; 13. Moving drive; 14. Supporting assembly; 15. Base; 16. Mounting seat; 17. Supporting rotating part; 18. Supporting slot; 19. Support arm; 20. Supporting shaft rotating part; 21. Round tube. DETAILED DESCRIPTION

[0026] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention.

[0027] like Figures 1 to 5As shown, the utility model provides a rotary chuck of a round tube screen printing machine, which includes a coaxially arranged rotary chuck shaft 1, a coupling sleeve 2, a chuck 3 and a locking nut 4. One end of the coupling sleeve 2 is axially recessed with a sleeve hole 5, and the other end of the coupling sleeve 2 is axially recessed with a tapered hole 6. The outer wall of the other end of the coupling sleeve 2 is provided with an external thread, and the tapered part of the chuck 3 is inserted into the tapered hole 6. The clamping part of the chuck 3 extends out of the tapered hole 6. The locking nut 4 is threadedly connected to the external thread and sleeved outside the clamping part of the chuck 3. The clamping part of the chuck 3 contacts the inner wall of the locking nut 4. One end of the rotary chuck shaft 1 is provided with a plug post 7, which passes through the center hole of the locking nut 4 and is inserted into the locking part of the chuck 3. The locking part of the chuck 3 is used to clamp the plug post 7. The other end of the rotary chuck shaft 1 is provided with a sleeve section 8. The diameters of the plug post 7 and the sleeve section 8 are both smaller than the diameter of the rotary chuck shaft 1. In this embodiment, the rotary chuck of the round tube screen printing machine also includes a base body 10 and a rotating driver 11 installed on the base body 10. The rotating shaft of the rotating driver 11 is inserted into the sleeve hole 5 of the coupling sleeve 2, and the rotating shaft of the rotating driver 11 is interference fit with the inner wall of the sleeve hole 5; specifically, the rotating driver 11 is a motor.

[0028] During assembly, the sleeve hole 5 of the coupling sleeve 2 is sleeved on the outside of the rotating shaft of the rotating driver 11, the tapered part of the chuck 3 is inserted into the tapered hole 6 of the coupling sleeve 2, and the locking nut 4 is sleeved on the outside of the external thread of the coupling sleeve 2. Then, the plug post 7 of the rotating clamp shaft 1 is passed through the center hole of the locking nut 4 and inserted into the clamping hole of the locking part of the chuck 3. One end face of the rotating clamp shaft 1 contacts the outer end face of the locking nut 4. Finally, the locking nut 4 is tightened so that the locking nut 4 is screwed into the coupling sleeve 2. The inner wall of the locking nut 4 squeezes the locking part of the chuck 3, so that the locking part of the chuck 3 is tightened and clamps the plug post 7. In actual application, the circular tube 21 is sleeved outside the sleeve section 8, and one end face of the circular tube 21 contacts the other end face of the rotary clamp shaft 1. When the screen printer prints the circular tube 21, the rotary driver 11 drives the coupling sleeve 2, together with the chuck 3, the locking nut 4, the rotary clamp shaft 1 and the circular tube 21, to rotate synchronously, so that the screen printer can screen print the peripheral wall of the circular tube 21. The present application realizes modular assembly of the rotary clamp head, which is convenient for disassembly, assembly and maintenance, and is easy to manufacture. The centerless grinder can grind the rotary clamp shaft 1 with good coaxiality, which is conducive to improving the printing quality of the circular tube 21.

[0029] In this embodiment, a conical surface 9 is provided on the peripheral wall of the free end of the sleeve section 8. The conical surface 9 plays a guiding role, making it easier for the round tube 21 to be sleeved outside the sleeve section 8.

[0030] In this embodiment, a locking hole is radially defined in the coupling sleeve 2 and communicates with the socket hole 5. A locking member is detachably connected to the locking hole. Specifically, the locking hole is a threaded hole, and the locking member is a bolt. After the rotating shaft of the rotary actuator 11 is inserted into the socket hole 5 of the coupling sleeve 2, the locking member securely locks the coupling sleeve 2 and the rotating shaft of the rotary actuator 11 together, ensuring a secure assembly between the rotating shaft of the rotary actuator 11 and the coupling sleeve 2.

[0031] The present invention also provides a chuck device, comprising a base 12 and two chuck heads of the aforementioned round tube screen printing machine, the two chuck heads being arranged opposite to each other, the base body 10 of the first chuck head being fixedly mounted on one end of the base 12, and the base body 10 of the second chuck head being slidably connected to the base 12. In actual application, one end of the round tube 21 is first sleeved onto the sleeve section 8 of the chuck shaft 1 of the first chuck head, and then the second chuck head is moved closer to the first chuck head so that the sleeve section 8 of the chuck shaft 1 of the second chuck head is inserted into the other end of the round tube 21. The round tube 21 is clamped by the chuck shafts 1 of the two chuck heads 3, and then the rotation drivers 11 of the two chuck heads are synchronously started to drive the chuck shaft 1 and the round tube 21 to rotate synchronously, and the screen printing machine prints on the circumferential wall of the rotating round tube 21.

[0032] In this embodiment, the transfer clamping device also includes a mobile driver 13 installed on the base 12, and the driving end of the mobile driver 13 is connected to the base body 10 of the second transfer clamping head. The mobile driver 13 is used to drive the second transfer clamping head closer to or away from the first transfer clamping head; specifically, the mobile driver 13 can be a cylinder.

[0033] In practical applications, the moving driver 13 is used to drive the second rotary chuck to move closer to or away from the first rotary chuck, so as to automatically clamp or release the round tube 21 .

[0034] In this embodiment, the chuck assembly further includes a support assembly 14 disposed on the base 12 and positioned between the two chuck heads. During assembly and disassembly of the tube 21 and the printing tube 21, the support assembly 14 supports the tube 21, thereby improving the stability of the tube 21. This not only facilitates assembly and disassembly of the tube 21 but also improves the quality of the printing tube 21.

[0035] In this embodiment, the escrow assembly 14 includes a base 15 disposed on the base 12, a mounting seat 16 installed on the base 15, and two escrow rotating members 17 rotatably connected to the mounting seat 16. The axes of the two escrow rotating members 17 are parallel to the axis of the rotating clamp shaft 1, and an escrow groove 18 is formed between the two escrow rotating members 17. Specifically, the escrow rotating member 17 is a bearing, a rotating wheel, or a rotating ball. In actual application, the circular tube 21 is located in the escrow groove 18, and the two escrow rotating members 17 support the circular tube 21. When the circular tube 21 rotates, the peripheral wall of the circular tube 21 rolls against the escrow rotating members 17, which can support the circular tube 21 without hindering the rotation of the circular tube 21.

[0036] Specifically, the base 15 is slidably connected to the base 12, and the base 15 is screwed to the base 12. This structural design facilitates adjustment of the position of the hosting assembly 14 to support the round tubes 21 of different lengths.

[0037] In this embodiment, the base body 10 of the chuck is equipped with a support arm 19, and the chuck shaft 1 is located above the support arm 19. The support arm 19 is rotatably connected to two support shaft rotating parts 20. The axes of the two support shaft rotating parts 20 are parallel to the axis of the chuck shaft 1. A support shaft groove is formed between the two support shaft rotating parts 20. The chuck shaft 1 of the chuck is located in the support shaft groove, and the support shaft rotating parts 20 roll against the outer wall of the chuck shaft 1.

[0038] In actual application, the turn clamp shaft 1 is located in the support shaft groove, and the two support shaft rotating parts 20 support the turn clamp shaft 1. When the turn clamp shaft 1 rotates, the peripheral wall of the turn clamp shaft 1 rolls against the support shaft rotating parts 20, which can support the turn clamp shaft 1 without hindering the rotation of the turn clamp shaft 1.

[0039] All technical features in this embodiment can be freely combined according to actual needs.

[0040] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A rotary chuck for a round tube screen printing machine, characterized by: The invention comprises a rotating clamp shaft (1), a coupling sleeve (2), a chuck (3) and a locking nut (4); one end of the coupling sleeve (2) is axially recessed with a sleeve hole (5); the other end of the coupling sleeve (2) is axially recessed with a tapered hole (6); the outer wall of the other end of the coupling sleeve (2) is provided with an external thread; the tapered portion of the chuck (3) is inserted into the tapered hole (6); the clamping portion of the chuck (3) extends out of the tapered hole (6); the locking nut (4) is threadedly connected with the external thread and sleeved on the chuck ( 3), the clamping part of the chuck (3) contacts the inner wall of the locking nut (4), one end of the rotating clamp shaft (1) is provided with a plug post (7), the plug post (7) passes through the center hole of the locking nut (4) and is inserted into the locking part of the chuck (3), the locking part of the chuck (3) is used to clamp the plug post (7), the other end of the rotating clamp shaft (1) is provided with a sleeve section (8), the diameters of the plug post (7) and the sleeve section (8) are both smaller than the diameter of the rotating clamp shaft (1).

2. The rotary chuck of a round tube screen printing machine according to claim 1, characterized in that: The free end peripheral wall of the sleeve section (8) is provided with a conical surface (9).

3. The rotary chuck of a round tube screen printing machine according to claim 1, characterized in that: The coupling sleeve (2) is provided with a locking hole in radial direction and communicated with the sleeve hole (5).

4. The rotary chuck of a round tube screen printing machine according to claim 3, characterized in that: The lock hole is detachably connected with a lock piece.

5. The rotary chuck of a round tube screen printing machine according to any one of claims 1 to 4, characterized in that: The rotary chuck of the round tube screen printing machine also includes a base body (10) and a rotary driver (11) installed on the base body (10). The rotary shaft of the rotary driver (11) is inserted into the sleeve hole (5) of the coupling sleeve (2).

6. A clamping device, characterized in that: It comprises a base (12) and two rotating chucks of the circular tube screen printing machine as described in claim 5, the two rotating chucks are arranged opposite to each other, the base body (10) of the first rotating chuck is fixedly mounted on one end of the base (12), and the base body (10) of the second rotating chuck is slidably connected to the base (12).

7. The clamping device according to claim 6, characterized in that: The chuck device further comprises a movable driver (13) mounted on the base (12), wherein a driving end of the movable driver (13) is connected to the base (10) of the second chuck, and the movable driver (13) is used to drive the second chuck to approach or move away from the first chuck.

8. The clamping device according to claim 7, characterized in that: The chuck device further comprises a hosting assembly (14) which is arranged on the base (12) and located between the two chuck heads.

9. The clamping device according to claim 8, characterized in that: The trustee assembly (14) comprises a base (15) arranged on the base (12), a mounting seat (16) mounted on the base (15), and two trustee rotating members (17) rotatably connected to the mounting seat (16). The axes of the two trustee rotating members (17) are parallel to the axis of the rotating clamp shaft (1), and a trustee groove (18) is formed between the two trustee rotating members (17).

10. The clamping device according to any one of claims 6 to 9, characterized in that: The base body (10) of the chuck is provided with a support arm (19), the chuck shaft (1) is located above the support arm (19), and the support arm (19) is rotatably connected to two support shaft rotating members (20), the axes of the two support shaft rotating members (20) are parallel to the axis of the chuck shaft (1), and a support shaft groove is formed between the two support shaft rotating members (20), the chuck shaft (1) of the chuck is located in the support shaft groove, and the support shaft rotating member (20) rolls against the outer wall of the chuck shaft (1).

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