WO2019001162A1

WO2019001162A1 - Scraper adjustment mechanism for rotary screen transfer printing device

Info

Publication number: WO2019001162A1
Application number: PCT/CN2018/087374
Authority: WO
Inventors: 钟博文
Original assignee: 长胜纺织科技发展(上海)有限公司; 钟博文
Priority date: 2017-06-28
Filing date: 2018-05-17
Publication date: 2019-01-03
Also published as: CN109130468A

Abstract

A scraper adjustment mechanism (105) for a rotary screen transfer printing device, and a rotary screen transfer printing color unit (100) and a rotary screen transfer printing device comprising the scraper adjustment mechanism (105). The scraper adjustment mechanism (105) comprises a primary adjustment mechanism and a secondary adjustment mechanism; the primary adjustment mechanism comprises a swing arm (201) and a swing arm actuator (202) for making a scraper close to or distant from the inner surface of a rotary screen (102); the swing arm (201) comprises a first swing arm portion (201') and a second swing arm portion (201"); a pivot portion (203) is provided on the first swing arm portion (201'), so that the first swing arm portion (201') can pivot around the pivot shaft (203) when being actuated by the swing arm actuator (202), and pivoting of the first swing arm portion (201') enables the second swing arm portion (201") to move correspondingly; the secondary adjustment mechanism comprises a secondary scraper pressure adjustment component (300) and a secondary scraper position adjustment component (400); the secondary scraper pressure adjustment component (300) is disposed at the first swing arm portion (201'); the secondary scraper position adjustment component (400) is disposed at the second swing arm portion (201").

Description

Scraper adjustment mechanism for rotary screen transfer printing device

Technical field

The present disclosure relates to a printing and dyeing machine for the textile industry, and in particular to a blade adjustment mechanism for a rotary screen transfer printing device. The present disclosure also relates to a rotary screen transfer printing color unit comprising the blade adjustment mechanism and a rotary screen transfer printing device.

Background technique

The rotary screen printing machine was first created in 1963 by the Dutch company Stoke. Although the rotary screen printing machine has a long history, it has developed rapidly. It has the advantages of low labor intensity, high production efficiency, and strong adaptability to fabrics. The rotary screen printing machine is suitable for printing chemical fiber fabrics, knitted fabrics, light fabrics, etc., and can obtain the effect of vivid flower color and bright color, and can avoid defects such as color transfer. Therefore, in the past two or three decades, rotary screen printing machines have become the mainstream products of textile printing and have been widely used in China.

In addition, in many printing technologies and equipment (such as rotary screen printing, flat screen printing, roller printing, plate printing, transfer printing, digital inkjet printing, etc.), the transfer printing has high fineness and strong layering. And it is suitable for mass production and has received wide attention. Therefore, the application of the rotary screen printing machine in the field of transfer printing and the combination of transfer printing is one of the development directions of printing and dyeing machinery.

In the rotary screen printing apparatus, the rotary screen is usually supported on the yarn ends at both ends, and the doctor blade assembly (or the squeegee mechanism) is installed in the hollow interior of the cylinder along the axial extension direction of the cylinder. The doctor blade assembly includes a color paste tube with a perforation, a doctor blade, a doctor blade holder, a splash guard, and the like. In operation, the rotary screen rotates, and the color paste flows through the holes in the color paste tube to the inner wall of the cylinder. The scraper scrapes the color paste on the inner wall of the rotary screen with the rotation of the rotary screen, thereby pressing the color paste through the circular net. The holes are printed on the fabric.

In the rotary screen printing device, the amount of the slurry varies depending on the pressure applied by the blade. In general, the amount of slurry is increased as the pressure applied by the blade increases. When the blade pressure is increased to a certain value, the increase in the amount of slurry tends to be slow. For a rigid blade, when the blade pressure reaches a certain extreme value, increasing the blade pressure will tend to decrease the amount of slurry. Therefore, the blade pressure is an important control parameter in the rotary screen printing, which will affect the amount of the slurry, which in turn affects the quality of the printing. And the excessive pressure of the scraper causes excessive friction between the scraper and the rotary net, which will accelerate the wear and even damage of the rotary screen.

Therefore, in the rotary screen printing device, precise adjustment of the blade position and the blade pressure in the blade assembly has important practical significance. Proper and precise blade position and blade pressure not only ensure the desired print quality, but also have a significant impact on the life of the rotary screen printing unit, production costs and so on. In view of this, the blade adjustment mechanism plays a pivotal role in the rotary screen printing device.

The Chinese utility model patent CN 204367552U discloses a rotary screen scraper positioning device and a rotary screen printing device applied thereto. Wherein, the rotary screen scraping device comprises a clamping cutter block for locking the scraper and a displacement control device for driving the movable cutter block. When the positioning blade needs to be positioned, the displacement control device drives the clamping blade to move, and the blade position is adjusted because the blade is mounted on the clamping block.

The Chinese utility model patent CN 204749479U discloses a scraper adjusting device for a rotary screen printing machine. The blade adjusting device includes a base fixed to the frame of the rotary screen printer, a blade pressure adjusting unit, and a blade height adjusting unit. Wherein, the base is provided with a vertical elongated strip-shaped limiting groove; the scraper pressure adjusting unit comprises a rotating shaft hinged at one end in the limiting groove, a connecting rod fixedly disposed at the other end of the rotating shaft, and An output shaft fixed at one end of the link; the blade height adjusting unit includes a cylinder fixed to the base and a lifting rod fixedly coupled to the piston shaft of the cylinder. The scraper adjusting device has a complicated structure, and needs to be driven by a driving motor, a conduction belt, a cylinder, etc., so that the manufacturing cost is high and the adjustment is not convenient.

Summary of the invention

In view of this, the present disclosure proposes a novel blade adjustment mechanism for a rotary screen transfer printing device, which can not only accurately adjust the position and pressure of the blade, but also has a simple structure, easy adjustment, and low manufacturing cost. .

According to an aspect of the present disclosure, a blade adjustment mechanism for a rotary screen transfer printing device is provided, the blade adjustment mechanism including a main adjustment mechanism and a secondary adjustment mechanism, wherein: the main adjustment mechanism includes a swing arm and a swing arm actuating device for actuating the swing arm, the swing arm including a first swing arm portion and a second swing arm portion, wherein one end of the first swing arm portion is coupled to the swing arm actuating device, and The other end of a swing arm portion is fixedly connected at an angle to the second swing arm portion; wherein a pivot portion is provided on the first swing arm portion such that when actuated by the swing arm actuating device, the first The swing arm portion is pivotable about the pivot portion, the pivoting of the first swing arm portion causes the second swing arm portion to move correspondingly, and the movement of the second swing arm portion causes the scraper to approach or move away from the circle The inner surface of the net. The secondary adjustment mechanism includes a secondary blade pressure adjustment assembly and a secondary blade position adjustment assembly, wherein the secondary blade pressure adjustment assembly is disposed on the first swing arm portion for contacting the blade with the rotary screen The pressure is adjusted, and the secondary blade position adjusting assembly is disposed at the second swing arm portion for adjusting the position of the blade within the cylinder.

The blade adjustment mechanism having the above configuration employs a two-stage adjustment method. First, the blade is adjusted to the appropriate position in the cylinder by the main adjustment mechanism; then, according to the actual needs (for example, according to the printing speed, the type of blade used, etc.), the secondary blade position adjustment assembly and the secondary blade pressure are passed. The adjustment assembly adjusts the position of the scraper in the cylinder and the contact pressure of the scraper to the cylinder.

Fine adjustment by the secondary blade position adjustment assembly and the secondary blade pressure adjustment assembly improves the print quality of the rotary screen print, while reducing the wear of the scraper and the rotary screen, and extending the life of the scraper and the rotary screen.

Preferably, the secondary blade pressure adjusting assembly includes a pressing member configured to change a force applied to an end of the first swing arm portion near the swing arm actuating device to pass the pendulum The arm pivots about the pivoting portion to adjust the contact pressure of the scraper with the cylinder.

Preferably, the secondary blade pressure adjusting assembly further includes a pressure adjusting sliding member, wherein the pressure adjusting sliding member is slidably engageable with the pressing member, and sliding of the pressure adjusting sliding member causes the The force exerted by the pressing member on the first swing arm portion changes.

Preferably, the pressure regulating sliding member has an inclined surface having a gradually varying height, the inclined surface slidably engaging an outer surface of the pressing member, and the height of the inclined surface gradually changes as the pressure adjusting sliding member slides The contact force between the inclined surface and the outer surface of the pressing member is changed, so that the force applied by the pressing member on the first swing arm portion is changed.

Preferably, the pressing member has a cylindrical shape.

Preferably, the abutting member is a cylindrical rolling bearing that is rotatable about its central axis.

Preferably, the secondary blade pressure adjustment assembly further includes a pressure adjustment hand wheel and a pressure adjustment nut screw mechanism, the pressure adjustment hand wheel being coupled to an end of the pressure adjustment nut screw mechanism adjacent to the second swing arm portion, and The pressure regulating sliding member is coupled to the other end of the pressure regulating nut screw mechanism, and the pressure adjusting sliding member slides via the pressure adjusting nut screw mechanism when the pressure adjusting hand wheel is rotated.

Preferably, the first swing arm portion has a rectangular shape in cross section, and the first swing arm portion has a hollow cavity extending along an axial direction thereof, and the first swing arm portion is adjacent to the a slit is disposed on an upper wall of the end of the swing arm actuating device, the slit extending through the upper wall and extending along an axial direction of the first swing arm portion, wherein the pressure adjustment slide a member passes through the slit to seat on an upper wall of the first swing arm portion such that the pressure regulating slide member has a first sliding portion located outside the first swing arm portion and located at the first swing arm portion a second sliding portion in the hollow cavity, the inclined surface of the pressure adjusting sliding member is located on the first sliding portion, and the pressure adjusting nut screw mechanism is located in the hollow cavity of the first swing arm portion And being coupled to the second sliding portion in a hollow cavity of the first swing arm portion to enable the pressure regulating sliding member to slide along an extending direction of the slit.

Preferably, the secondary blade position adjustment assembly includes a position adjustment hand wheel, a position adjustment nut screw mechanism and a position adjustment slide member, wherein the position adjustment hand wheel is connected to the position adjustment nut screw mechanism away from the first pendulum One end of the arm portion, and the position adjusting sliding member is located at the other end of the position adjusting nut screw mechanism, the blade assembly is coupled to the position adjusting sliding member and is movable together with the position adjusting sliding member.

Preferably, the secondary blade position adjusting assembly further includes a blade fixing hand wheel, and after the blade is adjusted to an appropriate position by the secondary blade position adjusting assembly, the blade fixing hand wheel is used to fix the blade in the adjustment Good location.

Preferably, the position adjustment sliding member is coupled to the other end of the position adjustment nut screw mechanism.

Preferably, the position adjusting sliding member abuts against the other end of the position adjusting nut screw mechanism.

Preferably, the second swing arm portion has a rectangular cross section, and the second swing arm portion has a hollow cavity extending along an axial direction thereof, and the position of the secondary scraper position adjusting assembly is adjusted to slide. a component and a position adjustment nut screw mechanism are both located in a hollow cavity of the second swing arm portion, a first slit is disposed on the second swing arm portion, and the scraper assembly passes through the first slit Connected to the position adjustment slide member.

Preferably, the second swing arm portion further includes a second slit, the second slit and the first slit are disposed on different walls of the second swing arm portion, and the scraper fixes the hand wheel through the The second slit is threaded to the position adjustment sliding member.

Preferably, when the blade fixing hand wheel is loosened, the blade fixing hand wheel, the position adjusting sliding member, and the blade assembly are movable together in the same direction, when the blade fixing hand is tightened At the time of the wheel, the position adjustment sliding member and the blade assembly are both fixed.

Preferably, the first swing arm portion and the second swing arm portion are configured in a unitary structure.

Preferably, the first swing arm portion and the second swing arm portion are configured in a separate structure.

The secondary blade position adjusting assembly and the secondary blade pressure adjusting assembly having the above configuration can be easily adjusted manually, which is more convenient to adjust than the prior art. In addition, the secondary scraper position adjusting assembly and the secondary scraper pressure adjusting assembly are mainly disposed inside the main adjusting mechanism, which reduces the space occupied by the two, facilitates the arrangement, and can protect the secondary scraper position adjustment and the secondary scraper pressure. Adjust the components so that they are not affected or damaged by the external environment.

According to another aspect of the present disclosure, a blade adjustment mechanism for a rotary screen transfer printing device for adjusting a position of a blade within a cylinder and a contact pressure of the blade with a cylinder is provided. Wherein the blade adjustment mechanism comprises a swing arm and a swing arm actuating device for actuating the swing arm, the swing arm comprising a first swing arm portion and a second swing arm portion, one end of the first swing arm portion The swing arm actuating device is coupled to the swing arm actuating device, and the other end of the first swing arm portion is fixedly coupled to the second swing arm portion at an angle. And wherein a pivoting portion is provided on the first swing arm portion such that the first swing arm portion is pivotable about the pivoting portion when actuated by the swing arm actuating device, the first swing arm Partial pivoting causes the second swing arm portion to move correspondingly; movement of the second swing arm portion causes the scraper to approach or away from the inner surface of the cylinder, thereby adjusting the position of the scraper in the cylinder and the scraper and the rotary screen Contact pressure.

Preferably, the angle between the first swing arm portion and the second swing arm portion is an obtuse angle.

According to still another aspect of the present disclosure, a rotary screen transfer printing color unit is provided, the rotary screen transfer printing color unit comprising a rotary screen, a transfer net, a doctor blade assembly, and two blade adjustment mechanisms according to the present disclosure; Wherein the doctor blade assembly is disposed inside the cylinder and extends along an axial direction of the cylinder; the transfer net and the cylinder are arranged parallel to each other along an axial direction, and are in operation An outer surface of the transfer net and an outer surface of the cylinder substantially abut each other; and wherein one of the blade adjustment mechanisms is disposed at each of the two axial ends of the cylinder.

In accordance with still another aspect of the present disclosure, a rotary screen transfer printing apparatus is provided that includes a rotary screen transfer printing color unit according to the present disclosure.

Other objects, features, and details of the present disclosure will become more fully apparent from the aspects of the appended claims.

The advantages of the respective embodiments and various further embodiments will be apparent to those skilled in the <RTIgt; In addition, the various features of the drawings discussed below are not necessarily drawn to scale. Dimensions of various features and elements in the figures may be expanded or reduced to more clearly illustrate embodiments of the present disclosure.

DRAWINGS

The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 shows a schematic view of a printing color unit of a rotary screen transfer printing apparatus showing the arrangement of the blade adjustment mechanism in the printing color unit in accordance with an embodiment of the present disclosure.

2 shows a schematic front view of a blade adjustment mechanism for a rotary screen transfer printing device in accordance with one embodiment of the present disclosure.

Detailed ways

The technical solutions of the present disclosure are further described in detail below through the accompanying drawings and the illustrated embodiments. In the present specification, the various systems, structures, and devices are schematically depicted in the drawings for purposes of explanation only, but not all features of the actual systems, structures, and devices, such as well-known functions or structures are not described in detail. To avoid unnecessary details, the disclosure is obscured. It should be understood that in any practical application, there are a number of specific implementation decisions that need to be made to meet the specific goals of the developer or user, and to comply with system-related and industry-related restrictions that may vary from application to application. . Moreover, it should be understood that such specific implementation decisions, while complex and time consuming, are routine tasks for those of ordinary skill in the art having the benefit of this disclosure.

The terms and phrases used herein are to be understood and interpreted as having a meaning consistent with the understanding of these terms and phrases. The consistent use of terms or phrases herein is not intended to imply a particular definition of a term or phrase, i.e., a definition that is different from ordinary and customary meanings understood by those skilled in the art. For a term or phrase that is intended to have a special meaning, that is, a different meaning as understood by the skilled person, this particular definition will be explicitly listed in the specification in a defined manner, giving the term or phrase directly and unequivocally. Special definition.

The word "comprise" and variations, such as "comprises", are intended to be interpreted in an open, inclusive sense, such as "including but not limited to".

Throughout the description of the specification, the description with reference to the terms "an embodiment", "an embodiment", "some embodiments", "example", "specific example", or "some examples", etc. Particular features, structures, materials or features described in the examples or examples are included in at least one embodiment or example of the present disclosure. Thus, the appearance of the phrases "in one embodiment" or "in an embodiment" Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

Moreover, the terms "first", "second", and the like are used for the purpose of description only, and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first", "second", etc. may include one or more of the features, either explicitly or implicitly. In the description of the present disclosure, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

In the present disclosure, the terms "installation", "connected", "coupled", "connected", "fixed" and the like are to be understood broadly, and may be, for example, a fixed connection, or a It is a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be internal communication between the two elements. The specific meanings of the above terms in the present disclosure can be understood by those of ordinary skill in the art based on the specific circumstances.

In the present disclosure, "axial direction" is used to mean the direction in which the elongated object extends along its length, and "cross-section" is used to mean a plane perpendicular to the "axial direction".

1 shows a schematic view of a printing color set unit 100 of a rotary screen transfer printing apparatus in accordance with one embodiment of the present disclosure. In the rotary screen transfer printing apparatus, there may be a plurality of printing color group units 100. The printing color group unit 100 includes a color group unit frame 101, a cylinder printing plate (may be referred to as "round wire") 102, a transfer roller (which may also be referred to as "transfer roller") 103, a doctor blade assembly 104, and a blade adjustment mechanism 105. The color group unit pushes the cylinder 106 and the like. Wherein, the rotary screen plate 102, the transfer roller 103, and the blade adjustment mechanism 105 are all disposed in the color unit frame 101, and the color group unit pressing cylinder 106 is disposed outside the color unit frame 101 for pushing the entire color group. The unit is near or away from the center roll. The rotary screen plate and the transfer roller are arranged parallel to each other in the axial direction, and the outer surface of the rotary screen plate and the outer surface of the transfer roller can pass through a rotary screen press cylinder (not shown). Abut each other or separate.

A doctor blade assembly (which may also be referred to as a "scraping mechanism") 104 is disposed inside the hollow interior of the cylinder printing plate 102 and extends along the axial direction of the cylinder printing plate 102. The doctor blade assembly 104 can be of any suitable type suitable for use in a rotary screen transfer printing device. For example, the doctor blade assembly 104 can include a color paste tube with a perforation, a doctor blade, a doctor blade holder, a doctor blade holder, a splash guard, and the like. The scraper can be a rubber scraper, a metal scraper, a polymer material scraper, and the like. Preferably, the doctor blade may be a metal scraper having a certain elasticity, such as a steel scraper. The choice of scraper should be based on the fabric variety and pattern configuration to ensure proper pulping and permeability for optimum printing results.

The squeegee is mounted on a suitable squeegee holder by a squeegee holder that can be translated and rotated inside the rotary screen plate to position, orient, and the inner surface of the squeegee and the screen of the rotary screen. Contact pressure is adjusted. The adjustment is carried out by a doctor adjustment mechanism according to the present disclosure, as will be described in detail below.

A specific structure of the blade adjustment mechanism 105 according to an embodiment of the present disclosure will be described below with reference to FIG.

The blade adjustment mechanism 105 includes a main adjustment mechanism and a secondary adjustment mechanism. The primary adjustment mechanism includes a swing arm 201 and a swing arm actuator 202. The swing arm 201 is composed of two parts of a first swing arm portion 201' and a second swing arm portion 201". In the plane perpendicular to the axial direction of the cylinder printing plate shown in Fig. 2 (i.e., the paper plane), A swing arm portion 201' is a horizontally extending swing arm portion, and the second swing arm portion 201" is an obliquely extending swing arm portion. Wherein, one end of the second swing arm portion 201" is angularly fixed at one end of the first swing arm portion 201', and the swing arm actuating device 202 is pivotally coupled to the other end of the first swing arm portion. The angle α between the swing arm portion and the second swing arm portion can be selected according to actual conditions. Preferably, the angle α between the first swing arm portion and the second swing arm portion is an obtuse angle.

The first swing arm portion 201' and the second swing arm portion 201" may be formed as separate components, respectively, and then the two components are fixedly connected (eg, welded, etc.) to form the swing arm 201. Alternatively, the first swing arm The portion 201' and the second swing arm portion 201" may be formed in one body. Further, the cross section of the first swing arm portion 201' and the second swing arm portion 201" (i.e., the cross section perpendicular to the axial direction thereof) is preferably rectangular, so that the first swing arm portion 201' and the second swing arm Portion 201" has four flat outer surfaces. However, the present disclosure is not limited thereto, and the first swing arm portion and the second swing arm portion may be designed to have cross sections of other suitable shapes.

A pivoting portion 203 is provided on the first swing arm portion 201'. In the embodiment according to Fig. 2, the pivoting portion 203 has a pivot hole for receiving a swing arm pivot (not shown) which can be fixedly mounted on a frame such as a printing color unit Upper, the pivot hole allows the first swing arm portion 201' to pivot about the swing arm. Wherein, the axial direction of the pivot hole is perpendicular to the plane of the paper in which FIG. 2 is located. The pivot hole may be provided at any position between the two ends of the first swing arm portion as needed. Preferably, the pivot hole is disposed at an intermediate position near the first swing arm portion. In the embodiment shown in Fig. 2, the pivot hole is provided in the boss projecting upward from the outer surface of the first swing arm portion, but the present disclosure is not limited thereto. For example, the pivot hole may be provided in a projection projecting rearward from the outer surface of the first swing arm portion. The boss may be formed integrally with the first swing arm portion. However, it is also possible to provide the boss as a separate component and then fix the boss to a suitable position of the first swing arm portion by various means such as welding, screwing, or the like. The raised portion can have any suitable shape and configuration, such as cylindrical, polygonal, and the like. In addition, the pivot hole may be a through hole or a blind hole as long as the blind hole can have a certain depth for receiving the pivot and can rotate the swing arm around it.

The doctor blade assembly 104 can be coupled to the second swing arm portion 201" and can be moved together with the second swing arm portion 201".

The swing arm actuating device 202 can be any type of pressure applying device, such as a pneumatic or hydraulic cylinder. The swing arm actuating device 202 is used to actuate the swing arm 201 to adjust the position of the scraper assembly 104 within the rotary screen 102 by causing the swing arm 201 to move the scraper assembly 104 together, thereby causing the scraper to approach in a certain orientation or Keep away from the inner surface of the rotary screen. Wherein the inner surface of the near-circular printing plate comprises contacting the inner surface of the rotary screen printing plate with a certain pressure.

The process will be specifically described by taking FIG. 2 as an example. The swing arm actuating device 202 can apply a force at the end of the first swing arm portion 201' (i.e., the joint of the two) such that the end of the first swing arm portion 201' moves upward or downward. At this time, the first swing arm portion 201' pivots around the swing arm at the position of the convex portion thereof, thereby causing the other end of the first swing arm portion 201' (ie, the first swing arm portion and the second swing arm) The partially connected end) moves downwards or upwards. The movement of the first swing arm portion 201' causes a corresponding movement of the second swing arm portion 201", thereby moving the scraper assembly 104 within the rotary screen plate 102 through the second swing arm portion 201" until the scraper moves to the desired position. Position up to now.

Further, in accordance with an embodiment of the present disclosure, the secondary adjustment mechanism of the blade adjustment mechanism 105 for the rotary screen transfer printing apparatus includes a secondary blade pressure adjustment assembly 300 and a secondary blade position adjustment assembly 400. Wherein, the secondary blade pressure adjustment assembly 300 is disposed on the first swing arm portion 201' of the swing arm, and the secondary blade position adjustment assembly 400 is disposed on the second swing arm portion 201" of the swing arm. The secondary blade pressure adjustment The assembly 300 and the secondary blade position adjustment assembly 400 are respectively used to finely adjust the pressure and position of the blade in the rotary screen plate 102. Preferably, the fine adjustment is performed manually, and the fine adjustment is adapted to pass through the main adjustment mechanism. After the blade is substantially adjusted in position, this allows finer adjustment and control of the position and pressure of the blade in a simple manner, which helps to improve the print quality of the rotary transfer printing device and helps to reduce the size of the blade. And the wear of the rotary net.

Preferably, according to an embodiment of the present disclosure, the first swing arm portion 201' and the second swing arm portion 202" of the swing arm may each be designed to have a hollow cavity. Thus, the secondary scraper pressure adjustment assembly 300 may be The secondary blade position adjustment assembly 400 is disposed in the hollow cavity of the first swing arm portion 201'. On the one hand, this design and arrangement saves material and reduces the weight of the entire blade adjustment mechanism; on the other hand, the secondary blade pressure adjustment assembly and the secondary blade position adjustment assembly are arranged inside the hollow cavity of the swing arm, thereby saving The space occupied by the rotary screen transfer printing device and, more importantly, the secondary blade position adjustment assembly and the secondary blade pressure adjustment assembly are protected from the external environment. However, the present disclosure is not limited thereto, and the secondary blade pressure adjusting assembly and the secondary blade position adjusting assembly may be disposed in appropriate positions outside the swing arm as needed.

The blade pressure adjusting assembly 300 mainly includes a pressure adjusting hand wheel 301, a pressure adjusting nut screw mechanism 302, a pressure adjusting sliding member 303, and a pressing member 304. Therein, the pressure regulating nut screw mechanism 302 extends in the axial direction of the first swing arm portion, and is preferably disposed inside the hollow cavity of the first swing arm portion. One end of the pressure regulating nut screw mechanism 302 (as shown in FIG. 2, the end is away from the end of the swing arm actuating device, that is, the end close to the second swing arm portion) is connected to the pressure adjusting hand wheel 301, and the other end (As shown in FIG. 2, the end is an end close to the swing arm actuating device, that is, an end away from the second swing arm portion) is connected to the pressure regulating sliding member 303.

The upper wall of the first swing arm portion is provided with a slit located at an end of the first swing arm portion adjacent to the swing arm actuating device, and the slit runs through the upper wall and along the first swing arm portion The axial direction extends a certain length. The pressure regulating sliding member 303 is designed to be seated on the upper wall of the first swing arm portion 201' through the slit, and thus is divided into two portions, that is, a first sliding portion located outside the first swing arm portion 201' And a second sliding portion located in the hollow cavity of the first swing arm portion 201', wherein the second sliding portion is for connecting with the pressure regulating nut screw mechanism 302 so that the pressure regulating sliding member 303 is at the pressure regulating nut The lead screw mechanism 302 slides under the driving. Thus, when the pressure adjusting hand wheel 301 is rotated, the pressure adjusting nut screw mechanism 302 is rotated, so that the pressure adjusting sliding member 303 can slide in the slit in the extending direction of the slit.

As shown in Fig. 2, the first sliding portion of the pressure adjusting sliding member 303 has an inclined upper surface such that the height of the first sliding portion gradually changes along the axial direction of the first swing arm portion 201'. In the embodiment shown in Fig. 2, the height of the first sliding portion gradually increases from left to right along the axial direction of the first swing arm portion. However, the present disclosure is not limited thereto, and the height of the first sliding portion may be designed to gradually decrease from left to right in the axial direction as needed.

The pressing member 304 is disposed above the pressure adjusting sliding member 303. Preferably, the pressing member 304 is disposed at a fixed position above the pressure adjusting sliding member 303. The inclined upper surface of the first sliding portion of the pressure adjusting sliding member 303 is used in cooperation with the pressing member 304 to adjust the contact pressure between the blade and the rotary screen plate 102. Specifically, the blade is first adjusted to a proper position in substantial contact with the rotary screen plate 102 by the primary adjustment mechanism and/or the secondary blade position adjustment assembly, at which time the first sliding of the pressing member 304 and the pressure regulating sliding member 303 The inclined upper surface of the portion is close to or in contact. Then, the pressure adjusting hand wheel 301 is rotated to slide the pressure adjusting sliding member 303 in a desired direction, since the height of the inclined upper surface is gradually changed, the contact pressure of the pressing member 304 with the inclined upper surface, and thus the passage The force exerted on the first swing arm portion 201' is gradually changed by tilting the upper surface, which in turn causes the first swing arm portion 201' to make a small range of pivotal movement about the swing arm pivot, thereby causing the scraper assembly 104 to move and thus The contact pressure of the doctor blade with the rotary screen plate 102 is changed.

In one embodiment in accordance with the present disclosure, the abutment member 304 has a cylindrical shape with an axial direction that is perpendicular to the plane of the paper in which FIG. 2 is located. Preferably, the abutment member 304 may be a cylindrical member (eg, a roller bearing or the like) that is rotatable about its central axis. In this case, since the pressing member 304 can roll on the inclined upper surface of the first sliding portion, the frictional force between the pressing member 304 and the inclined upper surface of the first sliding portion is small. When the pressure adjustment is performed, the pressure adjustment sliding member 303 can be more easily slid with respect to the pressing member 304, thereby reducing the force required to rotate the pressure adjustment hand wheel 301. In this way, the contact pressure of the blade and the rotary screen can be manually adjusted more easily.

The secondary blade pressure adjustment assembly can also include a pressure indicating element 305 for indicating the magnitude of the adjustment of the pressure. In the embodiment shown in Figure 2, the pressure indicating element 305 includes a pressure scale and a pressure amplitude indicator. The pressure scale is engraved with a value indicating the magnitude of the pressure adjustment. The pressure scale is fixed to the outer surface of the first swing arm portion near the end of the pressure adjustment hand wheel. The pressure scale can be fixed to the first swing arm portion by various connections, such as screw connection, bonding, welding, and the like. The pressure amplitude indicating member is fixed to the pressure adjusting nut screw mechanism 302, and slides back and forth along the axial direction of the first swing arm portion with the movement of the pressure adjusting nut screw mechanism 302, thereby being pressed according to the indicated pressure gauge The value is used to determine the magnitude of the pressure adjustment. In the embodiment shown in FIG. 2, since the pressure amplitude indicating member is located inside the hollow cavity of the first swing arm portion, a shaft along the first swing arm portion is disposed at a corresponding position of the first swing arm portion. A slit extending in the direction to make the pressure amplitude indicator visible. The length of the slit is substantially equal to or greater than the length of the pressure scale.

2, the secondary blade position adjustment assembly 400 in the blade adjustment mechanism in accordance with one embodiment of the present disclosure will be described in detail. After the blade assembly is substantially adjusted to the proper position by the main adjustment mechanism, the blade position is further finely adjusted by the secondary blade position adjustment assembly 400; or when the printing speed is changed, the blade is adjusted by the secondary blade position adjustment assembly 400. The position is adjusted accordingly.

The secondary blade position adjusting assembly 400 mainly includes a position adjusting hand wheel 401, a position adjusting nut screw mechanism 402, a position adjusting sliding member 403, and a blade fixing hand wheel 404. Wherein the position adjusting nut screw mechanism 402 extends along the axial direction of the second swing arm portion, and is preferably disposed inside the hollow cavity of the second swing arm portion 201". One end of the position adjusting nut screw mechanism 402 ( As shown in FIG. 2, the end is connected to the position adjusting hand wheel 401 at one end away from the first swing arm portion, and the other end (as shown in FIG. 2, the end is close to the end of the first swing arm portion) is connected to The position adjustment sliding member 403.

Preferably, the position adjustment sliding member 403 is slidably disposed in the hollow cavity of the second swing arm portion 201". When the position adjustment hand wheel 401 is rotated, the position adjustment nut screw mechanism 402 is rotated, thereby causing position adjustment The sliding member 403 is slidable in the axial direction of the second swing arm portion in the hollow cavity of the second swing arm portion.

Accordingly, a first slit 405 is provided at one end of the second swing arm portion near the position adjustment hand wheel 401. The blade holder of the doctor blade assembly 104 is coupled to the position adjustment slide member 403 by the first slit 405 in any suitable manner so as to be able to move up and down following the sliding of the position adjustment slide member 403 to change the blade relative to the cylinder plate 102. s position. The length of the first slit is designed to not interfere with the movement of the scraper assembly 104 to enable the scraper assembly 104 to move freely within a desired range of displacement.

A second slit 406 extending along an axial direction of the second swing arm portion is further disposed on the second swing arm portion, and the second slit 406 and the first slit 405 are disposed on different walls of the second swing arm portion. on. The blade fixing hand wheel 404 is screwed to the position adjusting sliding member 403 through the second slit 406. When the loose blade is fixed to the hand wheel 404, the blade fixing hand wheel 404 can move up and down in the second slit 406 along the extending direction of the second slit 406. Likewise, the length of the second slit 406 is designed to not interfere with the movement of the blade holding hand wheel 404 to enable the blade holding hand wheel 404 to move freely within a desired range of displacement.

When the blade position adjustment is performed, the blade fixing hand wheel 404 is first loosened, and then the position adjusting hand wheel 401 is manually rotated to rotate the position adjusting nut screw mechanism 402, thereby driving the position adjusting sliding member 403 in the second swing arm portion. The hollow cavity slides up and down. The position adjustment slide member 403 in turn drives the blade assembly 104 up and down to finely adjust the blade to a desired position. After the blade is adjusted to the desired position, the blade is fixed to fix the hand wheel 404, and the blade fixing hand wheel 404, the wall portion of the second swing arm portion 201", and the position adjusting sliding member 403 are tightly pressed against each other. The scraper assembly 104 is fixed together so that it can no longer be moved.

According to another embodiment of the present disclosure, the position adjustment nut screw mechanism 402 is designed to abut only the position adjustment sliding member 403. In this embodiment, when the position adjusting hand wheel 401 is rotated in one direction (such as a clockwise direction), the length of the position adjusting nut screw mechanism 402 in the hollow cavity of the second swing arm portion is elongated, thereby upward Pushing the position adjusting slide member 403 to move upward together with the scraper assembly 104; when rotating the position adjusting hand wheel 401 in the opposite direction (such as counterclockwise direction), the position adjusting nut screw mechanism 402 is at the second swing arm portion The length in the hollow cavity is shortened, at which time the doctor blade assembly 104 and the position adjusting slide member 403 are moved downward in the hollow cavity of the second swing arm portion by virtue of their own gravity.

Optionally, the secondary blade position adjustment assembly 400 further includes a position indicating element for indicating the magnitude of the adjustment of the position. The position indicating element may have a similar structure to the pressure indicating element and be fixed at a suitable position of the second swing arm portion in a similar connection. A detailed description will not be given here.

According to one embodiment of the present disclosure, the secondary blade position adjustment assembly 400 is capable of adjusting the positional amplitude to be ±10 mm. The position of the blade can vary as the printing speed changes. Taking the cotton fabric printing as an example, when the woven weight of the cotton woven fabric is 150 g/m ² and the printing speed is 60 m/min, the blade position control hand wheel is adjusted to 0 mm, and when the printing speed is increased to 80 m/ At min, the blade position control handwheel is adjusted to +4mm; when the printing speed is increased to 100m/min, the blade position control handwheel is adjusted to +6mm.

According to one embodiment of the present disclosure, a blade adjustment mechanism 105 according to the present disclosure may be provided at each of the two axial ends of the rotary screen plate 102. The two blade adjustment mechanisms 105 can each have respective pivot arm pivots and pivot about respective pivot arms. However, the two blade adjustment mechanisms 105 can also be pivotally coupled together by means of the same swing arm and can pivot about the same swing arm pivot. In this embodiment, preferably, each of the blade adjustment mechanisms 105 can be individually adjusted.

The blade adjustment mechanism for a rotary screen transfer printing device according to the present disclosure adopts a two-stage adjustment mode: first, the blade is adjusted to an appropriate position by a main adjustment mechanism; and then, according to actual needs (for example, according to actual printing speed) The type of scraper used, etc., the finer adjustment of the position of the scraper relative to the cylinder and the contact pressure of the scraper to the cylinder by the secondary scraper position adjustment assembly and the secondary scraper pressure adjustment assembly. Fine adjustments are made with the secondary blade position adjustment assembly and the secondary blade pressure adjustment assembly to improve the print quality of the rotary screen print, while reducing the wear of the scraper and the rotary screen, and extending the life of the scraper and the rotary screen. In addition, the secondary blade position adjustment assembly and the secondary blade pressure adjustment assembly can be easily adjusted manually, which is more convenient to adjust than the prior art. Again, the secondary blade position adjustment assembly and the secondary blade pressure adjustment assembly are preferably disposed inside the main adjustment mechanism, both reducing the space occupied by the two, facilitating the arrangement, and protecting the secondary blade position adjustment and the secondary blade. The pressure regulating component is protected from external environment.

Although the present disclosure has been described with reference to specific exemplary embodiments, the present disclosure is not limited by these exemplary embodiments. It will be appreciated that variations and modifications of the exemplary embodiments can be made by those skilled in the art without departing from the scope and spirit of the disclosure.

In addition, it is noted that the present disclosure may include any feature or combination of features or a summary thereof that is implicitly or explicitly disclosed herein, and is not limited to any of the defined ranges set forth above. Any of the elements, features and/or structural arrangements described herein may be combined in any suitable manner.

Claims

A scraper adjustment mechanism for a rotary screen transfer printing device, the scraper adjustment mechanism comprising a main adjustment mechanism and a secondary adjustment mechanism, wherein:

The main adjustment mechanism includes a swing arm and a swing arm actuating device for actuating the swing arm, the swing arm including a first swing arm portion and a second swing arm portion, wherein one end of the first swing arm portion Connected to the swing arm actuating device, and the other end of the first swing arm portion is fixedly connected at an angle to the second swing arm portion; wherein a pivot portion is provided on the first swing arm portion, so that the swing arm is When the moving device is actuated, the first swing arm portion is pivotable about the pivoting portion, the pivoting of the first swing arm portion causes the second swing arm portion to move correspondingly, and the second swing arm portion Movement causes the scraper to be near or away from the inner surface of the cylinder;

The secondary adjustment mechanism includes a secondary blade pressure adjustment assembly and a secondary blade position adjustment assembly, wherein the secondary blade pressure adjustment assembly is disposed on the first swing arm portion for contacting the blade with the rotary screen The pressure is adjusted, and the secondary blade position adjusting assembly is disposed at the second swing arm portion for adjusting the position of the blade within the cylinder.
The blade adjustment mechanism of claim 1, wherein the secondary blade pressure adjustment assembly includes a pressing member configured to change a proximity swing arm actuating device applied to the first swing arm portion The force at that end is to adjust the contact pressure of the blade with the cylinder by pivoting the swing arm about the pivot.
The blade adjustment mechanism according to claim 2, wherein said secondary blade pressure adjusting assembly further comprises a pressure regulating sliding member, wherein said pressure regulating sliding member is slidably engageable with said pressing member, and The sliding of the pressure regulating sliding member causes the pressing member to exert a force on the first swing arm portion.
The blade adjustment mechanism according to claim 3, wherein said pressure regulating sliding member has a gradually varying height inclined surface that slidably engages an outer surface of said pressing member when the pressure regulating sliding member slides At the time, the contact force between the inclined surface and the outer surface of the pressing member is changed due to the gradual change in the height of the inclined surface, thereby causing the force applied by the pressing member on the first swing arm portion to change.
The blade adjustment mechanism according to claim 4, wherein said pressing member has a cylindrical shape.
The blade adjustment mechanism according to claim 5, wherein the pressing member is a cylindrical rolling bearing that is rotatable about a central axis thereof.
The blade adjustment mechanism of claim 6 wherein said secondary blade pressure adjustment assembly further comprises a pressure adjustment hand wheel and a pressure adjustment nut screw mechanism, said pressure adjustment hand wheel being coupled to the pressure adjustment nut screw mechanism Adjacent to one end of the second swing arm portion, and the pressure regulating sliding member is coupled to the other end of the pressure regulating nut screw mechanism, the pressure regulating sliding member via the pressure regulating nut when the pressure adjusting hand wheel is rotated Slide the screw mechanism.
A doctor blade pressure adjusting assembly according to claim 7, wherein said first swing arm portion has a rectangular shape in cross section, and said first swing arm portion has a hollow cavity extending in an axial direction thereof, a slit is disposed on an upper wall of the first swing arm portion adjacent to the swing arm actuating device, the slit penetrating the upper wall and along an axis of the first swing arm portion Extending in a direction, wherein the pressure regulating sliding member passes through the slit to sit on an upper wall of the first swing arm portion such that the pressure regulating sliding member has a portion other than the first swing arm portion a first sliding portion and a second sliding portion located in the hollow cavity of the first swing arm portion, the inclined surface of the pressure adjusting sliding member is located on the first sliding portion, and the pressure adjusting nut screw mechanism is located at the a hollow cavity of the first swing arm portion and connected to the second sliding portion in a hollow cavity of the first swing arm portion to enable the pressure regulating sliding member to follow the slit The direction of extension slides.
The blade adjustment mechanism according to any one of claims 1 to 8, wherein the secondary blade position adjustment assembly includes a position adjustment hand wheel, a position adjustment nut screw mechanism, and a position adjustment slide member, wherein the position The adjustment hand wheel is coupled to an end of the position adjustment nut screw mechanism remote from the first swing arm portion, and the position adjustment sliding member is located at the other end of the position adjustment nut screw mechanism, and the blade assembly is coupled to the position adjustment slide The component can be moved along with the position adjustment slide.
The blade adjustment mechanism according to claim 9, wherein said secondary blade position adjusting assembly further comprises a blade fixing hand wheel, said blade being adjusted after the blade is adjusted to an appropriate position by said secondary blade position adjusting assembly The fixed handwheel is used to hold the scraper in the adjusted position.
The blade adjustment mechanism according to claim 10, wherein said position adjustment sliding member is coupled to said other end of said position adjustment nut screw mechanism.
The blade adjusting mechanism according to claim 10, wherein said position adjusting sliding member abuts against said other end of said position adjusting nut screw mechanism.
The blade adjustment mechanism according to claim 11 or 12, wherein a cross section of the second swing arm portion has a rectangular shape, and the second swing arm portion has a hollow cavity extending in an axial direction thereof, a position adjusting sliding member and a position adjusting nut screw mechanism of the secondary blade position adjusting assembly are both located in a hollow cavity of the second swing arm portion, and a first slit is disposed on the second swing arm portion The scraper assembly is coupled to the position adjusting slide member through the first slit.
The blade adjustment mechanism according to claim 13, wherein the second swing arm portion further includes a second slit, the second slit and the first slit being disposed on different walls of the second swing arm portion Upper, the blade fixing hand wheel is screwed to the position adjusting sliding member through the second slit.
The blade adjustment mechanism according to claim 14, wherein the blade fixing hand wheel, the position adjusting sliding member, and the blade assembly are capable of being along the same direction when the blade fixing hand wheel is loosened Movement, the position adjustment sliding member, and the scraper assembly are both fixed when the scraper is fixed to the hand wheel.
The blade adjustment mechanism according to any one of claims 1 to 8, 10 to 12, and 14 to 15, wherein the first swing arm portion and the second swing arm portion of the swing arm are configured in a unitary structure.
The blade adjustment mechanism according to any one of claims 1 to 8, 10 to 12, and 14 to 15, wherein the first swing arm portion and the second swing arm portion of the swing arm are configured in an independent structure.
A scraper adjusting mechanism for a rotary screen transfer printing device, wherein the scraper adjusting mechanism is used for adjusting a position of the scraper in the rotary screen and a contact pressure between the scraper and the rotary screen,

Wherein the blade adjustment mechanism comprises a swing arm and a swing arm actuating device for actuating the swing arm, the swing arm comprising a first swing arm portion and a second swing arm portion, one end of the first swing arm portion Connected to the swing arm actuating device, and the other end of the first swing arm portion is fixedly connected at an angle to the second swing arm portion;

And wherein a pivoting portion is provided on the first swing arm portion such that the first swing arm portion is pivotable about the pivoting portion when actuated by the swing arm actuating device, the first swing arm Partial pivoting causes the second swing arm portion to move correspondingly; movement of the second swing arm portion causes the scraper to approach or away from the inner surface of the cylinder, thereby adjusting the position of the scraper in the cylinder and the scraper and the rotary screen Contact pressure.
The blade adjustment mechanism according to claim 18, wherein the first swing arm portion and the second swing arm portion are configured in a unitary structure.
The blade adjustment mechanism according to claim 18, wherein the first swing arm portion and the second swing arm portion are configured in an independent structure.
The blade adjustment mechanism according to any one of claims 18 to 20, wherein an angle between the first swing arm portion and the second swing arm portion is an obtuse angle.
A rotary screen transfer printing color unit comprising a rotary screen, a transfer net, a doctor blade assembly, and two blade adjustment mechanisms according to any one of claims 1 to 21;

Wherein the doctor blade assembly is disposed inside the cylinder and extends along an axial direction of the cylinder; the transfer net and the cylinder are arranged parallel to each other along an axial direction, and are in operation An outer surface of the transfer net and an outer surface of the circular net substantially abut each other;

And wherein one of the blade adjustment mechanisms is disposed at each of the two shaft ends of the rotary screen.
A rotary screen transfer printing device comprising the rotary transfer printing color unit of claim 22.