Rotary screen lifting device of rotary screen printing machine
By combining the dual cylinders and sliders of the rotating shaft and swing arm drive mechanism, the fine lifting control of the circular screen printing machine is realized, solving the problems of complex structure and high cost in the prior art, and improving the synchronization and precise adjustment of the circular screen The degree of failure avoids the occurrence of twisting and disconnecting the network.
Patent Information
- Application Number
- CN202421195843.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-29
AI Technical Summary
The lifting structure of the existing circular screen printing machine is complex, costly, and the synchronous movement of the head seats at both ends is difficult, which can easily lead to improper adjustment of the circular screen, increasing the probability of twisting and disconnecting the network.
The rotating shaft and swing arm drive mechanism are adopted, and the double power drive of the first cylinder and the second cylinder is combined with the slider and the linear guide rail to achieve fine lifting control of the circular net, simplifying the driving structure and reducing costs.
The synchronization and precise lifting of the circular net are achieved, which avoids the occurrence of twisting and disconnecting of the network, simplifies the driving structure, reduces equipment costs, and improves the accuracy of the adjustment of the distance between the circular net and the conductor belt.
Smart Images
Figure CN222246522U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rotary screen printing machines, in particular to a rotary screen lifting device of a rotary screen printing machine. Background Art
[0002] As a screen printing machine, the working mechanism of the rotary screen printing machine is that the fabric is transported along the guide belt under the rotary screen, and the rotary screen rolls continuously on the fabric. During the rolling process of the rotary screen, the slurry in the rotary screen is printed on the fabric through the mesh on the rotary screen to achieve printing. During the printing process, in order to facilitate the replacement of the flower or the rotary screen, the rotary screen needs to be set to be liftable. In the existing rotary screen printing machine, the rotary screen is installed on the mesh head seat at both ends. In order to achieve the liftability of the rotary screen, the mesh head seats at both ends correspond to a set of lifting cylinders, which are driven by the lifting cylinders to achieve lifting, as described in the patent document of Chinese patent application No. 201320444703.4. However, under this lifting structure, the mesh head seats at both ends each require a set of lifting cylinders, the structure is complex, the equipment cost is high, and the mesh head seats at both ends move separately, the lifting mechanism of the cylinders at both ends is difficult to synchronize, and the height adjustment of the two ends of the rotary screen is prone to improper, which increases the probability of twisting the net and breaking the net. Utility Model Content
[0003] The utility model aims at a rotary screen lifting device of a rotary screen printing machine.
[0004] The technical solution to achieve the purpose of the utility model is: a rotary screen lifting device for a rotary screen printing machine, including a rotating shaft installed on a machine base, a first swing arm is installed on the rotating shaft, a chuck for installing the rotary screen is provided on the first swing arm, a second swing arm is also installed on the rotating shaft, one end of a swing arm driving mechanism is hinged to the machine base, and the other end of the swing arm driving mechanism is hinged to the second swing arm.
[0005] Furthermore, the swing arm driving mechanism includes a first cylinder, one end of which is hinged to the machine base, and the other end of which is hinged to the second swing arm. When working, the first cylinder drives the second swing arm to rotate the shaft, and the rotating shaft drives the round net fixed on the chuck to swing, so that the swinging round net can be lifted and lowered. The swing arm driving mechanism can be a cylinder, a lead screw, a belt or other structures. Compared with other structures, the cylinder has a simple structure, is easy to use, and has a low threshold.
[0006] Furthermore, the swing arm driving mechanism also includes a second cylinder, one end of the second cylinder is hinged to the machine base, the other end of the second cylinder is hinged to the second swing arm, the hinge point between the first cylinder and the second swing arm is P1, the hinge point between the second cylinder and the second swing arm is P2, and P2 is not in the same position as P1. During operation, the second cylinder drives the second swing arm to rotate the rotating shaft, and the rotating rotating shaft drives the round net fixed on the chuck to swing, so that the swinging round net can be lifted and lowered. When the second cylinder and the first cylinder are driven by a double cylinder, the double cylinders can be driven respectively corresponding to the rising and falling movements of the round net. For example, when the round net needs to rise, the first cylinder extends and the round net swings upward; when the round net needs to fall, the second cylinder extends and the round net swings downward. In this way, under the one-to-one corresponding drive control, the lifting and lowering drive control of the round net is simpler.
[0007] Furthermore, the base includes a base body and a slider, the base body is provided with a linear guide rail, the slider is slidably mounted on the linear guide rail, the slider is driven by a linear drive mechanism and can move along the linear guide rail, and one end of the second cylinder is hinged to the slider. One end of the second cylinder can be hinged to the base body to realize the hinge of one end of the second cylinder and the base; one end of the second cylinder can also be hinged to the slider to realize the hinge of one end of the second cylinder and the base. After one end of the second cylinder is hinged to the slider, when the slider moves along the linear guide rail under the drive of the linear drive mechanism, it can also drive the second cylinder and the second swing arm in turn to rotate the rotating shaft, and the rotating rotating shaft drives the round net fixed on the chuck to swing, so that the swinging round net can be lifted and lowered. That is to say, after one end of the second cylinder is hinged to the slider, not only the second cylinder and the first cylinder can drive the round net to rise and fall, but the slider can also drive the round net to rise and fall. When the round net is lifted and lowered, it has three powers, namely, the second cylinder, the first cylinder and the slider. The setting of the three powers can facilitate fine control of the lifting and lowering of the round net, such as the first cylinder drives the round net to swing upward, the slider drives the round net to swing downward greatly, and the first cylinder drives the round net to swing downward slightly. In this way, the fine control can be applied in more occasions.
[0008] Furthermore, the second swing arm includes a long arm and a short arm, the first cylinder is hinged to the short arm of the second swing arm, and the second cylinder is hinged to the long arm of the second swing arm. The setting of the long arm and the short arm, on the one hand, can set hinge points for the first cylinder and the second cylinder respectively; on the other hand, the setting of different lengths of the long arm and the short arm provides different lifting strokes for the first cylinder and the second cylinder. For example, after being hinged to the short arm, the first cylinder extends out to achieve rapid ascent of the round net; and after being hinged to the long arm, the second cylinder extends out to enable slow descent of the round net. In this way, the round net can rise quickly and fall slowly during the entire action. Rapid ascent is convenient for disassembly, and slow descent is convenient for more precise adjustment of the spacing between the round net and the guide belt.
[0009] Furthermore, the distance between P2 and the rotating shaft is L1, the distance between P2 and the rotating shaft is L2, and the relationship between L1 and L2 is L1<L2. This setting can facilitate the rapid rise and slow fall of the cylinder, thereby facilitating the disassembly of the cylinder 200, and the cylinder can also be more accurate when adjusting the distance between the cylinder and the guide belt.
[0010] Furthermore, the second swing arm is located at the end of the rotating shaft, so that the installation space at the end is larger, which is convenient for the arrangement of the second swing arm and the swing arm driving mechanism.
[0011] The rotary screen lifting device of the rotary screen printing machine of the utility model, through the setting of the rotating shaft and the first swing arm thereon, enables the chuck to be installed on the first swing arm, and the rotary screen fixedly installed on the chuck can be side-mounted under the action of the first swing arm. The rotary screen is installed under the side-mounted structure of the same rotating shaft through the first swing arm. When the rotary screen is lifted and lowered to adjust the spacing between the rotary screen and the guide belt, it is only necessary to start the swing arm driving mechanism to drive the second swing arm to rotate the rotating shaft, so that the rotary screen can swing together as a whole to achieve lifting and lowering. The lifting and lowering actions of the two ends of the rotary screen have good synchronization and consistency, which facilitates the accurate lifting of the rotary screen, and there is no situation where the two ends of the rotary screen are lifted and lowered at inappropriate heights, which effectively avoids the occurrence of twisting and breaking of the screen. Moreover, since the entire lifting process only needs to drive the rotating shaft to rotate, it only needs the swing arm driving mechanism, which is a driving mechanism, and does not need multiple driving mechanisms. The driving structure is also simpler and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a three-dimensional structural schematic diagram of a rotary screen lifting device of a rotary screen printing machine of the utility model;
[0013] Figure 2 This is a schematic diagram of the main structure of the rotary screen lifting device of the rotary screen printing machine of the utility model;
[0014] Figure 3 The utility model is a three-dimensional structural schematic diagram of a rotary screen lifting device of a rotary screen printing machine excluding a first swing arm. DETAILED DESCRIPTION
[0015] The preferred embodiment of the rotary screen lifting device of the rotary screen printing machine of the utility model is described in detail below in conjunction with the accompanying drawings:
[0016] like Figures 1 to 3 As shown, a rotary screen lifting device of a rotary screen printing machine includes a rotating shaft 1 installed on a machine base 10, a first swing arm 2 is installed on the rotating shaft 1, a chuck 21 for installing a rotary screen 200 is provided on the first swing arm 2, a second swing arm 3 is also installed on the rotating shaft 1, one end of a swing arm driving mechanism 4 is hinged to the machine base 10, and the other end of the swing arm driving mechanism 4 is hinged to the second swing arm 3.
[0017] The rotary screen lifting device of the rotary screen printing machine of the utility model, the rotating shaft 1 is installed on the machine base 10 and can rotate; the first swing arm 2 is installed on the rotating shaft 1 and serves as a mounting bracket of the chuck 21; the chuck 21 is used to install the rotary screen 200; the second swing arm 3 is connected to the rotating shaft 1 as a whole, and the second swing arm 3 can swing when the rotating shaft 1 is rotatable; the swing arm driving mechanism 4 provides driving force for the swing of the second swing arm 3.
[0018] In the rotary screen lifting device of the rotary screen printing machine of the utility model, the rotary screen 200 is installed on the chuck 21. During operation, the swing arm driving mechanism 4 drives the second swing arm 3 to swing, and the swinging second swing arm 3 drives the rotating shaft 1 to rotate. After the rotating shaft 1 rotates, the first swing arm 2 and the rotary screen 200 installed on the chuck 21 also swing synchronously, and the swinging rotary screen 200 is lifted and lowered to adjust the distance between the rotary screen 200 and the guide belt.
[0019] The rotary screen lifting device of the rotary screen printing machine of the utility model, through the arrangement of the rotating shaft 1 and the first swing arm 2 thereon, enables the chuck 21 to be installed on the first swing arm 2, and the rotary screen 200 fixedly installed on the chuck 21 is side-mounted under the action of the first swing arm 2. The round screen 200 is installed under the side-mounted structure of the same rotating shaft 1 through the first swing arm 2. When the round screen 200 is raised and lowered to adjust the distance between the round screen 200 and the guide belt 300, it is only necessary to start the swing arm driving mechanism 4 to drive the second swing arm 3 to rotate the rotating shaft 1, so that the round screen 200 can swing as a whole to achieve lifting. The lifting and lowering actions at both ends of the round screen 200 are synchronized and consistent, which facilitates the precise lifting of the round screen 200. At the same time, there is no situation where the two ends of the round screen 200 are raised and lowered at inappropriate heights, which effectively avoids the occurrence of twisting and breaking of the screen. In addition, since the entire lifting process only requires driving the rotating shaft 1 to rotate, it only requires the swing arm driving mechanism 4, without multiple driving mechanisms, and the driving structure is also simpler and low in cost.
[0020] In the rotary screen lifting device of the rotary screen printing machine of the utility model, preferably, the swing arm driving mechanism 4 includes a first cylinder 41, one end of the first cylinder 41 is hinged to the machine base 10, and the other end of the first cylinder 41 is hinged to the second swing arm 3. During operation, the first cylinder 41 drives and drives the second swing arm 3 to rotate the rotating shaft 1, and the rotating rotating shaft 1 drives the rotary screen 200 fixed on the chuck 21 to swing, so that the swinging rotary screen 200 can be lifted and lowered. The swing arm driving mechanism 4 can be a cylinder, a screw, a belt driving mechanism or the like. Compared with other structures, the cylinder structure is simple, easy to use, and has a low threshold.
[0021] The rotary screen lifting device of the rotary screen printing machine of the utility model is preferably that the swing arm driving mechanism 4 also includes a second cylinder 42, one end of the second cylinder 42 is hinged to the machine base 10, the other end of the second cylinder 42 is hinged to the second swing arm 3, the hinge point between the first cylinder 41 and the second swing arm 3 is P1, the hinge point between the second cylinder 42 and the second swing arm 3 is P2, and P2 is not in the same position as P1. When working, the second cylinder 42 drives the second swing arm 3 to rotate the shaft 1, and the rotating shaft 1 drives the rotary screen 200 fixed on the chuck 21 to swing, so that the swinging rotary screen 200 can be lifted and lowered. When the second cylinder 42 and the first cylinder 41 are driven by a dual cylinder, the dual cylinders can respectively drive the upward movement and downward movement of the round net 200. For example, when the round net 200 needs to rise, the first cylinder 41 extends and the round net 200 swings upward; when the round net 200 needs to fall, the second cylinder 42 extends and the round net 200 swings downward. In this way, under the one-to-one corresponding drive control, the lifting and lowering drive control of the round net 200 is simpler.
[0022] The rotary screen lifting device of the rotary screen printing machine of the utility model is preferably that the machine base 10 includes a machine base body 101 and a slider 102, the machine base body 101 is provided with a linear guide rail 1011, the slider 102 is slidably mounted on the linear guide rail 1011, the slider 102 is driven by a linear drive mechanism 103 and can move along the linear guide rail 1011, and one end of the second cylinder 42 is hinged to the slider 102. One end of the second cylinder 42 can be hinged to the machine base body 101 to realize the hinge of one end of the second cylinder 42 and the machine base 10; one end of the second cylinder 42 can also be hinged to the slider 102 to realize the hinge of one end of the second cylinder 42 and the machine base 10. After one end of the second cylinder 42 is hinged to the slider 102, when the slider 102 is driven by the linear drive mechanism 103 and moves along the linear guide rail 1011, it can also drive the second cylinder 42 and the second swing arm 3 in turn to rotate the rotating shaft 1. The rotating rotating shaft 1 drives the round net 200 fixed on the chuck 21 to swing, so that the swinging round net 200 can be raised and lowered. That is to say, after one end of the second cylinder 42 is hinged to the slider 102, not only the second cylinder 42 and the first cylinder 41 can drive the round net 200 to be lifted, but the slider 102 can also drive the round net 200 to be lifted. When the round net 200 is lifted, it has three powers, namely, the second cylinder 42, the first cylinder 41 and the slider 102. The three-power setting can facilitate fine control of the lifting of the round net 200. For example, the first cylinder 41 drives the round net 200 to swing upward, the slider 102 drives the round net 200 to swing downward greatly, and the first cylinder 41 drives the round net 200 to swing downward slightly. In this way, the fine control can be applied to more occasions.
[0023] In the rotary screen lifting device of the rotary screen printing machine of the utility model, preferably, the second swing arm 3 includes a long arm 31 and a short arm 32, the first cylinder 41 is hinged to the short arm 32 of the second swing arm 3, and the second cylinder 42 is hinged to the long arm 31 of the second swing arm 3. The setting of the long arm 31 and the short arm 32, on the one hand, can set hinge points for the first cylinder 41 and the second cylinder 42 respectively; on the other hand, the setting of different lengths of the long arm 31 and the short arm 32 provides different lifting strokes for the first cylinder 41 and the second cylinder 42, such as after being hinged to the short arm 32, the first cylinder 41 extends out to realize the rapid rise of the rotary screen 200; and after being hinged to the long arm 31, the second cylinder 42 extends out to make the rotary screen 200 slowly descend, so that the rotary screen 200 can be quickly raised and slowly lowered during the whole action process, and the rapid rise is convenient for disassembly, and the slow descent is convenient for more accurate adjustment of the spacing between the rotary screen 200 and the guide belt.
[0024] In the rotary screen lifting device of the rotary screen printing machine of the present invention, preferably, the distance between P2 and the rotating shaft 1 is L1, the distance between P2 and the rotating shaft 1 is L2, and the relationship between L1 and L2 is L1<L2. This setting can facilitate the rapid rise and slow fall of the rotary screen 200, thereby facilitating the disassembly of the rotary screen 200, and the rotary screen 200 can be lowered to adjust the distance between the guide belt more accurately.
[0025] In the rotary screen lifting device of the rotary screen printing machine of the utility model, preferably, the second swing arm 3 is located at the end of the rotating shaft 1. The installation space at the end is larger, which is convenient for the installation of the second swing arm 3 and the swing arm driving mechanism 4.
[0026] The rotary screen lifting device of the rotary screen printing machine of the utility model, the first swing arm 2 can be directly installed on the rotating shaft 1; it can also be installed on the rotating shaft 1 through a bracket, as shown in the attached Figure 1 In addition, the rotating shaft 1 can be an integral structure, such as being composed of one shaft; or a split structure, such as being composed of two coaxial small shafts, such as being attached Figure 1 shown.
[0027] For ordinary technicians in the technical field to which the utility model belongs, the utility model can make several simple deductions or substitutions without departing from the concept of the utility model, which should be regarded as falling within the protection scope of the utility model.
Claims
1. A rotary screen lifting device for a rotary screen printing machine, characterized in that: It includes a rotating shaft installed on a machine base, a first swing arm is installed on the rotating shaft, a chuck for installing a round net is provided on the first swing arm, a second swing arm is also installed on the rotating shaft, one end of a swing arm driving mechanism is hinged to the machine base, and the other end of the swing arm driving mechanism is hinged to the second swing arm.
2. The rotary screen lifting device of the rotary screen printing machine according to claim 1, characterized in that: The swing arm driving mechanism comprises a first cylinder, one end of the first cylinder is hinged to the machine base, and the other end of the first cylinder is hinged to the second swing arm.
3. The rotary screen lifting device of the rotary screen printing machine according to claim 2, characterized in that: The swing arm driving mechanism also includes a second cylinder, one end of the second cylinder is hinged to the machine base, the other end of the second cylinder is hinged to the second swing arm, the hinge point between the first cylinder and the second swing arm is P1, the hinge point between the second cylinder and the second swing arm is P2, and P2 is not in the same position as P1.
4. The rotary screen lifting device of the rotary screen printing machine according to claim 3, characterized in that: The base includes a base body and a slider. The base body is provided with a linear guide rail. The slider is slidably mounted on the linear guide rail. The slider is driven by a linear drive mechanism and can move along the linear guide rail. One end of the second cylinder is hinged to the slider.
5. The rotary screen lifting device of the rotary screen printing machine according to claim 3, characterized in that: The second swing arm includes a long arm and a short arm, the first cylinder is hinged to the short arm of the second swing arm, and the second cylinder is hinged to the long arm of the second swing arm.
6. The rotary screen lifting device of a rotary screen printing machine according to claim 3, characterized in that: The distance between P2 and the rotating axis is L1, the distance between P2 and the rotating axis is L2, and the relationship between L1 and L2 is L1<L2.
7. The rotary screen lifting device of a rotary screen printing machine according to claim 1, characterized in that: The second swing arm is located at the end of the rotating shaft.