A tapered, breathable printing rod for improved precision

Abstract

This utility model discloses a tapered, ventilated printing rod with improved precision, belonging to the field of printing equipment technology. It includes a printing rod body with a hollow air channel inside. One end has a feed air hole and an outward-facing oblique air hole distributed circumferentially, and an inlet ramp at the edge. The other end has a tapered guide head with a self-locking tension cap threadedly connected to it and a wrench-operated slot. The tapered guide head also has an air inlet. The hollow air channel connects the air inlet, the feed air hole, and the outward-facing oblique air hole. This printing rod allows for quick assembly and disassembly via the self-locking tension cap, ensures precise alignment between the printing rod and the equipment, and the inlet ramp assists in the smooth installation of the flexible hose. Combined with uniform airflow, the hose expands and fits tightly, effectively solving the problems of cumbersome assembly and disassembly and large registration deviations in multi-color printing in existing technologies. This improves printing precision and efficiency, and features a simple structure and low cost.

Description

Technical Field

[0001] This utility model belongs to the field of printing equipment technology, specifically relating to a tapered, breathable printing rod with improved precision. Background Technology

[0002] With the development of the plastic packaging industry, tube packaging is increasingly widely used in daily necessities, cosmetics, and other fields. Its surface typically requires printing product information, and the demand for multi-color registration printing is increasing. To achieve tube printing, a printing fixture (or printing rod) is inserted into the tube opening, and air is inflated to expand the tube and ensure a smooth printing surface.

[0003] While existing hose printing rods have solved the hose installation and positioning problems to some extent, they still have the following drawbacks:

[0004] Disassembly and replacement are troublesome: Special tools are required for installation and disassembly, making the operation cumbersome and affecting production efficiency;

[0005] Insufficient precision: Deviations are prone to occur during multi-color registration printing, making it difficult to guarantee registration accuracy and affecting print quality;

[0006] Poor hose positioning stability: The hose is prone to skew during installation or removal, which further aggravates the misalignment.

[0007] Therefore, there is an urgent need for a printing rod that can solve the above problems in order to improve the accuracy and efficiency of tube printing. Utility Model Content

[0008] The purpose of this invention is to provide a tapered, breathable printing rod with improved precision, which aims to solve the problems of cumbersome disassembly and assembly, large misregistration in multi-color printing, and insufficient precision in the existing technology.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0010] A tapered, ventilated printing rod with improved precision includes a printing rod body. The printing rod body has a hollow air channel along its axial direction. One end of the printing rod body has a plurality of feed air holes and a plurality of discharge outward oblique air holes evenly spaced along its circumference. The other end of the printing rod body has a tapered guide head. The end of the tapered guide head is threaded with a self-locking tension cap. The tapered guide head has a plurality of air inlets evenly spaced along its circumference. The hollow air channel connects the air inlets, the feed air holes, and the discharge outward oblique air holes.

[0011] As a further description of the above technical solution, the outward inclined air blowing hole is inclined in a direction away from the axis of the printing rod body (10), and the inclination angle is 30° to 45°.

[0012] As a further description of the above technical solution, the air outlet of the feed air hole is located on the circumferential surface of the printing rod body; the air outlet of the discharge outward oblique air hole is located on the end face of the printing rod body.

[0013] As a further description of the above technical solution, the printing rod body has an inlet ramp at one end edge near the feed air hole.

[0014] As a further description of the above technical solution, the outer wall of the self-locking tensioning cap is provided with two wrench slots, which are symmetrically arranged along the outer peripheral wall of the self-locking tensioning cap.

[0015] As a further description of the above technical solution, the number of feed air holes is 4 to 6; the number of discharge outward oblique air holes is 4 to 6.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] By incorporating a self-locking tension cap and wrench holder, installation or removal is achieved quickly by simply rotating the self-locking tension cap with a wrench in the holder, eliminating the need for special tools and significantly improving replacement efficiency. The tapered guide head ensures precise alignment between the printing rod and the equipment, while the inclined auxiliary hose allows for smooth installation. Combined with uniform airflow, the hose expands and fits tightly, controlling multi-color registration deviation to within 0.1 mm. A hollow air channel provides stable air supply, ensuring a flat surface after hose expansion, providing a stable reference for multi-color registration printing and significantly reducing registration deviation. The inlet air blower enters the auxiliary hose from the circumferential surface, reducing insertion resistance; the outlet outward-angled air blower, after printing, tilts from the end face to assist hose disengagement, preventing jamming and misalignment, and improving operational stability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a cross-sectional view of the internal structure of this utility model.

[0020] Figure label:

[0021] 10-Printing rod body; 1-Self-locking tension cap; 12-Wrench holder; 13-Tapered guide head; 14-Air inlet; 15-Hollow air channel; 16-Feed air inlet; 17-Outlet outward slanted air inlet; 18-Inlet ramp. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1 and Figure 2 A tapered, ventilated printing rod with improved precision includes a cylindrical printing rod body 10 with a hollow air channel 15 arranged axially inside. Four feed air holes 16 and six discharge oblique air holes 17 are evenly spaced circumferentially at one end of the printing rod body 10. The outlet of the feed air holes 16 is located on the circumferential surface of the printing rod body 10. The discharge oblique air holes 17 are inclined away from the axis of the printing rod body 10 at an angle of 45°. An inlet ramp 18 is provided at the edge of the printing rod body 10 near the feed air holes 16 to facilitate quick insertion of the flexible tube. The outlet of the discharge oblique air holes 17 is located on the inlet ramp 18 and is used to blow air from the end face after printing to assist the flexible tube in disengaging.

[0024] The other end of the printing rod body 10 is integrally formed with a tapered guide head 13 (taper of 1:5 to 1:10). The end of the tapered guide head 13 away from the printing rod body 10 is fitted with a self-locking tension cap 11 through a thread. Two wrench slots 12 (with a planar structure) are symmetrically provided on the outer peripheral wall of the self-locking tension cap 11 to facilitate wrench insertion. Several air inlets 14 are evenly spaced along the circumference in the middle of the tapered guide head 13. The hollow air channel 15 connects the air inlets 14, the feed air inlet 16, and the discharge outward oblique air inlet 17.

[0025] During installation, connect the self-locking tension cap 11 end of the printing rod body 10 to the printing equipment, use a wrench to lock into the wrench slot 12, rotate the self-locking tension cap 11 to lock it with the equipment, and complete the precise docking of the printing rod and the printing equipment.

[0026] When the hose is installed, the hose is initially installed under the guidance of the inlet ramp 18. High-pressure gas is introduced into the air inlet 14 and blown out from the feed air outlet 16 through the hollow air channel 15 to open the hose opening and assist the hose to be smoothly installed along the circumference of the printing rod body 10 until the hose is fully unfolded and tightly attached to the printing rod body 10 due to inflation.

[0027] During multi-color registration printing, the tapered guide head 13 ensures accurate positioning, and the expanded hose surface is flat, ensuring that the registration position deviation of each color is within 0.1 mm.

[0028] After printing is completed, the air inlet 14 continues to supply air, and the airflow is blown out from the outward oblique air outlet 17 through the hollow air channel 15 (the oblique airflow exerts force outward), and the auxiliary hose is smoothly separated from the printing rod body 10.

[0029] When the printing rod needs to be replaced, use a wrench to engage the wrench holder 12 and rotate the self-locking tension cap 11 in the opposite direction for quick disassembly.

[0030] This utility model has a compact structure and is suitable for high-precision printing operations on various types of flexible tubes, thus having significant practical value.

[0031] 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 precision improved tapered ventable printing rod, comprising a printing rod body (10), a hollow air passage (15) is arranged axially inside the printing rod body (10), a plurality of feeding and blowing holes (16) are arranged uniformly and spaced apart circumferentially at one end of the printing rod body (10), characterized in that: The printing rod body (10) is provided with several outlet oblique air holes (17) evenly spaced near the feed air hole (16); the other end of the printing rod body (10) is provided with a tapered guide head (13), the end of the tapered guide head (13) is threaded with a self-locking tension cap (11), and several air inlets (14) are evenly spaced along the circumference on the tapered guide head (13); the hollow air channel (15) connects the air inlet (14), the feed air hole (16) and the outlet oblique air hole (17). ​ 2. The improved precision tapered, ventilated printing rod according to claim 1, characterized in that: The outward inclined air blowing hole (17) is inclined in a direction away from the axis of the printing rod body (10), with an inclination angle of 30° to 45°.

3. The improved precision tapered, ventilated printing rod according to claim 2, characterized in that: The outlet of the outward oblique air blowing hole (17) is located on the end face of the printing rod body (10).

4. The improved precision tapered, ventilated printing rod according to claim 3, characterized in that: The air outlet of the feed air hole (16) is located on the circumferential surface of the printing rod body (10).

5. The improved precision tapered ventilated printing rod according to any one of claims 1 to 4, characterized in that: The printing rod body (10) has an inlet ramp (18) at one end edge near the feed air hole (16).

6. The improved precision tapered, ventilated printing rod according to claim 1, characterized in that: The self-locking tension cap (11) has two wrench slots (12) on its outer wall, which are symmetrically arranged along the outer periphery of the self-locking tension cap (11).

7. The improved precision tapered, ventilated printing rod according to claim 1, characterized in that: The number of feed air holes (16) is 4 to 6; the number of discharge external oblique air holes (17) is 4 to 6.

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