A printing rod base assembly structure

Abstract

This utility model discloses a printing rod base assembly structure, belonging to the technical field of printing equipment. It includes a base and a printing rod. The base comprises an outer seat, a bushing, an inner sleeve, a rivet sleeve, a rivet sleeve nut, a connecting sleeve, and a connecting outer sleeve. The bushing is fitted inside the outer seat, forming an airflow channel with the inner sleeve, and is connected to an air source through an air inlet. Bearings are mounted on the outer circumference of the inner sleeve, working with inner and outer retaining rings to limit movement and reduce rotational friction and movement. The rivet sleeve passes through the inner sleeve and is engaged with the printing rod insertion end by steel balls, with spring assistance for quick assembly and disassembly. Sealing rings are provided at both ends of the bushing, sealing the airflow channel through interference fit. This structure allows for printing rod assembly and disassembly without special tools, improving maintenance efficiency. It also offers high stability, good sealing, long service life, and flexible adaptation to different equipment, effectively ensuring printing accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of printing equipment technology, and specifically relates to a printing rod base assembly structure. Background Technology

[0002] In printing equipment, the printing rod, as one of the core components, directly affects printing accuracy, equipment stability, and service life through its assembly structure with the base. In existing technologies, the printing rod base assembly structure often uses bolt fastening or interference fit, requiring specialized tools for disassembly and assembly, making the process cumbersome and affecting maintenance efficiency. During rotation, the printing rod is prone to radial or axial movement, leading to printed pattern misalignment and decreased accuracy. The mating parts between the base and the printing rod lack effective sealing structures, easily causing ink leakage, contaminating the equipment, and wasting consumables. The relative rotating parts of the printing rod and base lack wear-resistant design, and after long-term use, friction can increase the gap, further exacerbating stability issues. Furthermore, it is difficult to quickly adjust the angle or position of the printing rod according to printing needs, resulting in poor adaptability.

[0003] Therefore, there is an urgent need for a printing rod base assembly structure that is easy to install, highly stable, has good sealing performance, and a long service life to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a printing rod base assembly structure that enables quick assembly and disassembly of the printing rod, stable operation, effective sealing, and flexible adjustment, thereby improving the overall performance of the printing equipment.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A printing rod base assembly structure includes a base and a printing rod; the base includes an outer seat, a bushing, an inner sleeve, a rivet sleeve, a rivet sleeve nut, a connecting sleeve, and a connecting outer sleeve;

[0007] The bushing is fitted inside the outer seat, and the bushing has a first air inlet on its peripheral wall. The outer seat is hollowed out in the middle, and the first air inlet is exposed through the hollowed-out part of the outer seat.

[0008] The inner sleeve is fitted inside the bushing and forms an airflow channel between them. Several second air inlets are evenly spaced along the circumference of the inner sleeve. The second air inlets are used to connect the airflow channel with the inner cavity of the inner sleeve.

[0009] The inner sleeve has an outer flange at one end, and the outer seat has an inner groove at the end near the outer flange. The inner sleeve is equipped with a bearing on its outer circumference so that the inner sleeve can rotate freely relative to the outer seat, thereby rotating the printing rod and the hose sleeved on the printing rod, which facilitates the printing of patterns on the surface of the hose. One bearing is located in the inner groove of the outer seat and abuts against the outer flange for limiting the movement, while the other bearing is located at the end of the bushing. An inner retaining groove is opened on the inner wall of the outer seat near the bearing, and an inner retaining ring is installed in the inner retaining groove for limiting the bearing movement.

[0010] The rivet sleeve is inserted into the inner sleeve and is limited by the inner retaining ring inside the inner sleeve. One end of the rivet sleeve is threaded with a rivet sleeve nut, and the other end has a positioning hole that mates with a steel ball. The positioning hole contains a steel ball. The insertion end of the printing rod is inserted into the inner sleeve and is engaged with the rivet sleeve by the steel ball. A spring is fitted on the outer periphery of the rivet sleeve near the rivet sleeve nut. The two ends of the spring abut against the inner retaining ring and the rivet sleeve nut, respectively.

[0011] The connecting sleeve is fixedly connected to the rivet nut, and the connecting outer sleeve is fitted on the outside of the connecting sleeve and fixedly connected to the outer seat.

[0012] As a further description of the above technical solution, a washer is provided between the bearing and the inner retaining ring to reduce the wear of the inner retaining ring caused by the rotation of the bearing.

[0013] As a further description of the above technical solution, an outer retaining groove is provided on the outer wall of the inner sleeve near the bearing, and an outer retaining ring is installed in the outer retaining groove. The outer retaining ring and the inner retaining ring are used together for bearing positioning.

[0014] As a further description of the above technical solution, both ends of the bushing are provided with concave rings, and sealing rings are installed inside the concave rings. The sealing rings are located at both ends of the airflow channel and are used to seal the airflow channel to prevent gas from leaking from between the bushing and the bearing or between the inner sleeve and the bearing.

[0015] As a further description of the above technical solution, the sealing ring is made of nitrile rubber and is interference-fitted with both the inner sleeve and the bushing.

[0016] As a further description of the above technical solution, the number of steel balls is 3 to 6, and they are evenly distributed along the circumference of the rivet sleeve.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention's printing rod, through its cooperation with steel balls, enables rapid positioning and unlocking of the printing rod and base, allowing for disassembly and assembly without the need for special tools, thus improving maintenance efficiency. The bearing design reduces radial friction during inner sleeve rotation, while the inner and outer retaining rings axially limit the bearing and bushing respectively, effectively preventing movement and ensuring printing accuracy. The interference fit between the sealing ring and the inner and bushings effectively prevents gas leakage. The use of wear-resistant components such as bearings and steel balls reduces friction loss, and the buffering effect of the gasket reduces vibration and impact, extending the overall structure's service life. The connection between the rivet sleeve and the printing rod allows for the replacement of printing rods of different specifications as needed, and the adjustment of the connecting sleeve and connecting outer sleeve allows for flexible adaptation to different printing equipment models. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 yes Figure 1 EE sectional view.

[0021] Figure 3 It is a three-dimensional cross-sectional view after removing the connecting sleeve and connecting jacket.

[0022] Figure label:

[0023] 100-Base; 101-Outer seat; 102-Bushing; 1021-First air inlet; 103-Inner sleeve; 1031-Second air inlet; 1032-Inner flange; 104-Pulley sleeve; 105-Pulley sleeve nut; 106-Spring; 107-Steel ball; 108-Bearing; 109-Sealing ring; 110-Inner retaining ring; 111-Outer retaining ring; 112-Washer; 113-Connecting sleeve; 114-Connecting outer sleeve; 200-Printing rod. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Please see Figures 1-3 A printing rod base assembly structure includes a base 100 and a printing rod 200. The base 100 includes an outer seat 101, a bushing 102, an inner sleeve 103, a rivet sleeve 104, a rivet sleeve nut 105, a connecting sleeve 113, and a connecting outer sleeve 114;

[0026] The bushing 102 is fitted inside the outer seat 101. The bushing 102 has a first air inlet 1021 on its peripheral wall. The outer seat 101 is hollowed out in the middle, and the first air inlet 1021 is exposed from the hollowed-out part of the outer seat 101.

[0027] The inner sleeve 103 is fitted inside the bushing 102 and forms an airflow channel between them. Several second air inlets 1031 are evenly spaced along the circumference of the inner sleeve. The second air inlets 1031 are used to connect the airflow channel and the inner cavity of the inner sleeve 103. Both ends of the bushing 102 are provided with concave rings, and sealing rings 109 are installed inside the concave rings. The sealing rings 109 are located at both ends of the airflow channel. The sealing rings 109 are made of nitrile rubber and are interference fit with the inner sleeve and the bushing to seal the airflow channel and prevent air leakage.

[0028] The inner sleeve 103 has an outer flange at one end, and the outer seat 101 has an inner groove at the end near the outer flange. Bearings 108 are mounted on the inner sleeve 103. One bearing 108 is located within the inner groove of the outer seat 101 and abuts against the outer flange for positioning. The other bearing 108 is located at the end of the bushing 102. An inner retaining groove is formed on the inner wall of the outer seat 101 near the bearing 108, and an inner retaining ring 110 is installed in the inner retaining groove. The inner retaining ring 110 is used to position the bearing 108. A washer 112 is provided between the bearing 108 and the inner retaining ring 110 to provide cushioning and reduce vibration and impact. An outer retaining groove is formed on the outer wall of the inner sleeve 103 near the bearing 108, and an outer retaining ring 111 is installed in the outer retaining groove. The outer retaining ring 111, together with the inner retaining ring, is used to position the bearing 108.

[0029] A rivet sleeve 104 is inserted into an inner sleeve 103 and is limited by an inner flange 1032 within the inner sleeve 103. One end of the rivet sleeve 104 is threadedly connected to a rivet sleeve nut 105, and the other end has four circumferentially distributed positioning holes that mate with steel balls 107. The positioning holes are filled with steel balls 107. The connection end between the inner sleeve 103 and the printing rod 200 is flared to facilitate the smooth insertion of the tapered guide head of the printing rod 200 insertion end. The printing rod 200 is inserted into the inner sleeve 103 and is engaged with the rivet sleeve 104 by the steel balls 107. A spring 106 is fitted on the outer periphery of the rivet sleeve 104 near the rivet sleeve nut 105. The two ends of the spring 106 abut against the inner flange 1032 and the rivet sleeve nut 105, respectively.

[0030] The connecting sleeve 113 is fitted onto one end of the rivet nut 105 and is fixedly connected by bolts; the connecting outer sleeve 114 is fitted onto the outside of the connecting sleeve 113 and is fixed to the outer seat 101 by bolts through the outer flange, for connection with printing equipment.

[0031] Assembly process of printing rod and base: Insert the insertion end of printing rod 200 into inner sleeve 103 along the flared opening of inner sleeve 103. The insertion end compresses the steel ball 107, causing the pull pin sleeve 104 to compress the spring 106. When the insertion end is in place, the spring 106 returns to its original position, pushing the pull pin sleeve 104 to return to its original position. The steel ball 107 then engages with the self-locking tension cap of the printing rod insertion end, completing the fixation. During disassembly, an external force (such as pulling the connecting sleeve 113) causes the pull pin sleeve 104 to compress the spring 106. The steel ball 107 moves with the pull pin sleeve 104 and disengages from the self-locking tension cap, allowing the printing rod 200 to be removed without special tools.

[0032] An external air source enters the airflow channel between the bushing 102 and the inner sleeve 103 through the first air inlet 1021, then enters the inner cavity of the inner sleeve 103 through the second air inlet 1031, and then passes through the air inlet on the printing rod 200, through the air channel inside the printing rod, and out through the air outlet at the other end of the printing rod 200. This facilitates the insertion of the flexible tube onto the printing rod 200 and ensures that the flexible tube expands during the printing process, avoiding wrinkles and improving printing accuracy. The sealing rings 109 at both ends of the bushing 102 seal the airflow channel through an interference fit, preventing gas leakage from the gaps between the bushing 102 and the inner sleeve 103 and the bearing 108, and ensuring stable airflow pressure.

[0033] The inner sleeve 103 rotates freely relative to the outer seat 101 via the bearing 108, thereby driving the printing rod 200 to rotate synchronously, meeting the requirements for continuous pattern printing on the surface of the flexible tube during the printing process. The bearing 108 reduces frictional loss during the rotation of the inner sleeve 103, and the steel ball 107 is made of wear-resistant material (such as high carbon steel) to extend its service life after repeated disassembly and assembly; the washer 112 buffers the vibration and impact between the bearing 108 and the inner retaining ring 110, reducing component fatigue.

[0034] The inner retaining ring 110 and the outer retaining ring 111 cooperate with the outer flange of the inner sleeve 103 and the end of the bushing 102 to restrict the axial displacement of the bearing 108, prevent the inner sleeve 103 and the printing rod 200 from moving radially or axially during rotation, and ensure printing accuracy.

[0035] The detachable connection design of the connecting sleeve 113 and the connecting outer sleeve 114 can be adapted to different models of printing equipment; when changing printing rods of different specifications, they can be quickly replaced by steel ball snap-fit ​​structure, improving equipment adaptability.

[0036] The above description is merely the preferred embodiment of this utility model. It should be noted that, for those skilled in the art, various modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from its principles, and these modifications or substitutions can also achieve the technical effects of this utility model, and should also be considered within the protection scope of this utility model.

Claims

1. A printing rod base assembly structure, comprising a base (100) and a printing rod (200), characterized in that: The base (100) includes an outer seat (101), a bushing (102), an inner sleeve (103), a rivet sleeve (104), a rivet sleeve nut (105), a connecting sleeve (113), and a connecting outer sleeve (114). The bushing (102) is fitted inside the outer seat (101). The bushing (102) has a first air inlet (1021) on its peripheral wall. The outer seat (101) is hollowed out in the middle, and the first air inlet (1021) is exposed from the hollowed-out part of the outer seat (101). The inner sleeve (103) is fitted inside the bushing (102) and forms an airflow channel between them. Several second air inlets (1031) are evenly spaced along the circumference of the inner sleeve. The second air inlets (1031) are used to connect the airflow channel with the inner cavity of the inner sleeve (103). The inner sleeve (103) has an outer flange at one end, and the outer seat (101) has an inner groove at one end near the outer flange. The inner sleeve (103) is fitted with a bearing (108) on its outer periphery. One bearing (108) is located in the inner groove of the outer seat (101) and abuts against the outer flange for positioning. The other bearing (108) is located at the end of the bushing (102). The inner wall of the outer seat (101) near the bearing (108) has an inner groove. An inner retaining ring (110) is installed in the inner groove and is used to limit the bearing (108). The rivet sleeve (104) is inserted into the inner sleeve (103) and limited by the inner retaining ring (1032) in the inner sleeve (103). One end of the rivet sleeve (104) is threadedly connected to the rivet sleeve nut (105), and the other end is provided with a positioning hole that mates with the steel ball (107). The positioning hole is filled with the steel ball (107). The insertion end of the printing rod (200) is inserted into the inner sleeve (103) and is engaged with the rivet sleeve (104) by the steel ball (107). A spring (106) is fitted on the outer periphery of the rivet sleeve (104) near the rivet sleeve nut (105). The two ends of the spring (106) abut against the inner retaining ring (1032) and the rivet sleeve nut (105) respectively. The connecting sleeve (113) is fixedly connected to the rivet nut (105), and the connecting outer sleeve (114) is sleeved on the outside of the connecting sleeve (113) and fixedly connected to the outer seat (101).

2. The printing rod base assembly structure according to claim 1, characterized in that: A washer (112) is provided between the bearing (108) and the inner retaining ring (110).

3. The printing rod base assembly structure according to claim 1, characterized in that: The inner sleeve (103) has an outer retaining groove on the outer wall near the bearing (108), and an outer retaining ring (111) is installed in the outer retaining groove. The outer retaining ring (111) is used to limit the bearing (108).

4. The printing rod base assembly structure according to claim 1, characterized in that: Both ends of the bushing (102) are provided with concave rings, and sealing rings (109) are installed inside the concave rings. The sealing rings (109) are located at both ends of the airflow channel and are used to seal the airflow channel.

5. The printing rod base assembly structure according to claim 4, characterized in that: The sealing ring (109) is made of nitrile rubber and is interference-fitted with the inner sleeve (103) and the bushing (102).

6. The printing rod base assembly structure according to claim 1, characterized in that: The number of steel balls (107) is 3 to 6, and they are evenly distributed along the circumference of the rivet sleeve (104).

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