CN201501150U - Positioning device for multi-station screen printing machine - Google Patents

Abstract

The utility model relates to a positioning device for a multi-station screen printing machine, which comprises a fixed frame, a turntable rotatably installed on one side of the fixed frame, and a turntable that is slidably installed on the fixed frame The positioning mechanism on the other side, and the driving cylinder that drives the positioning mechanism to extend and retract relative to the turntable, wherein the outer periphery of the turntable is provided with a plurality of radially extending A notch slot, the position of the positioning mechanism close to the turntable is provided with a positioning piece that can extend into and out of the notch slot with the extension and retraction of the positioning mechanism. The positioning device of the utility model has high positioning precision, simple structure and low manufacturing cost.

Description

Positioning device for multi-station screen printing machine

technical field

The utility model relates to a screen printing machine, in particular to a positioning device for a multi-station screen printing machine.

Background technique

At present, with the development of the clothing and printing industry, screen printing is more and more popular in the clothing and printing industry due to its advantages of exquisite picture, strong three-dimensional effect and not easy to fade. At the same time, the precision requirements of screen printing are also increasing. higher. Garment printing usually requires multi-color overprinting at multiple stations, so the positioning accuracy of the rotary multi-station screen printing machine directly determines the printing quality. The positioning mechanism of the current rotary screen printing machine generally adopts an adjustable installation position structure, which is complicated in structure, difficult to adjust, high in production cost, and low in positioning accuracy.

Utility model content

The technical problem to be solved by the utility model is to provide a positioning device with a simple structure and high positioning accuracy for the above-mentioned defects of the existing rotary multi-station screen printing machine.

The technical solution adopted by the utility model to solve the technical problems is: a positioning device for a multi-station screen printing machine is proposed, which includes a fixed frame, a turntable rotatably installed on one side of the fixed frame, a slidable The positioning mechanism installed on the fixed frame relative to the other side of the turntable, and the drive cylinder that drives the positioning mechanism to extend and retract relative to the turntable, wherein the outer periphery of the turntable is provided with a There are a plurality of radially extending notch slots with the same number of positions, and the position of the positioning mechanism near the turntable is provided with a positioning member that can extend into and out of the notch slots with the extension and retraction of the positioning mechanism.

According to an embodiment of the present utility model, the fixed frame includes a bottom plate installed on the frame of the printing machine, and a mounting plate fixed on both sides of the bottom plate and a central axis of the turntable, and the positioning mechanism is slidably installed On the mounting plate, the turntable is rotatably mounted on the central axis of the turntable.

According to one embodiment of the present invention, the lower surface of the turntable is fixed with a turntable bearing seat, and the turntable bearing seat is installed on the central axis of the turntable through a bearing. Further, bearing installation holes are formed on the upper and lower end surfaces of the turntable bearing seat, and two bearings are respectively installed in the bearing installation holes.

According to an embodiment of the present invention, the positioning mechanism includes a power input plate fixedly connected with the piston rod of the driving cylinder, and a positioning plate fixedly connected with the power input plate, and the positioning plate is slidably installed on The positioning member is provided on the mounting plate and near the turntable of the positioning plate.

According to one embodiment of the present invention, the positioning member includes a positioning pin installed on the positioning plate, and a rotatable positioning bearing seat is installed on the positioning pin through a bearing, and the positioning bearing seat has a The diameter that matches the width of the notch groove. Further, the upper and lower ends of the positioning bearing seat form bearing mounting holes, and the positioning bearing seat is rotatably mounted on the positioning pin through two bearings installed in the bearing mounting holes.

According to one embodiment of the present invention, a slider is provided on the lower surface of the positioning plate, which is sleeved on the linear guide rail provided on the mounting plate.

The positioning device of the multi-station screen printing machine of the utility model is driven by the driving cylinder to drive the positioning mechanism to slide along the guide rail, so that the positioning member on the positioning mechanism can extend into the notch groove provided on the turntable to position the turntable when positioning is required. And after completing the operation of the corresponding printing station, the positioning member can be withdrawn from the notch groove, and the positioning of the turntable can be released. Therefore, the positioning device has high positioning accuracy, simple structure, and low manufacturing cost.

Description of drawings

The utility model will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

Figure 1 is a schematic diagram of the overall structure of a positioning device according to an embodiment of the present invention;

Fig. 2 is the front view of the positioning device shown in Fig. 1;

Fig. 3 is a structural sectional view of the positioning device shown in Fig. 1;

Fig. 4 is a schematic diagram of the position of the positioning device according to the embodiment of the present invention when the piston rod of the driving cylinder is retracted;

Fig. 5 is a schematic diagram of the position of the positioning device according to the embodiment of the present invention when the piston rod of the driving cylinder is extended.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Figure 1 and Figure 2 show the overall structure of a positioning device according to an embodiment of the present invention. As shown in the figure, the positioning device of the rotary multi-station screen printing machine includes a fixed frame 10 , a rotary mechanism 20 , a cylinder driving mechanism 30 and a positioning mechanism 40 .

The fixing frame 10 includes a bottom plate 11 , a mounting plate 12 and a central shaft 13 of the turntable. The bottom plate 11 is installed on the frame of the printing press for supporting the entire positioning device. The mounting plate 12 and the turntable central axis 13 are fixedly installed on both sides of the upper side of the bottom plate 11 .

The turntable mechanism 20 includes a turntable 21 rotatably mounted on the turntable central shaft 13 . The outer periphery of the turntable 21 is provided with a plurality of radially extending notches 211 equal to the number of printing stations, and each notch 211 corresponds to the positioning position of each printing station on the turntable 21 . Specifically as shown in FIG. 3 , the turntable 21 is mounted on the turntable central shaft 13 through the turntable bearing housing 23 and the bearing 22 . The turntable bearing seat 23 is fixed on the lower surface of the turntable 21, and the bearing installation holes are formed on the upper and lower end surfaces of the turntable bearing seat 23, and the two bearings 22 are respectively installed in the bearing installation holes on the upper and lower end surfaces, so that the turntable 21 is movably installed on the central axis 13 of the turntable through the bearing 22, and can rotate relatively around the central axis 13 of the turntable. As further shown in FIG. 3 , a bearing bushing 24 is sheathed near the lower end of the bottom plate 11 of the central shaft 13 of the turntable, for separating the inner ring of the bearing 22 close to the bottom plate 11 from the bottom plate 11, so as to facilitate the rotation of the turntable 21 relative to the turntable. Rotation of central axis 13. Those skilled in the art will know that what is shown in FIG. 3 is only a specific embodiment in which the turntable is rotatably installed on the central axis of the turntable, and is not a limitation of the present invention.

Referring to FIG. 2 again, the cylinder driving mechanism 30 includes a driving cylinder 33 fixedly installed on the cylinder mounting plate 32 . The cylinder mounting plate 32 is fixed on the outside of the guide rail bottom plate 31 on the mounting plate 12 . The piston rod of the driving cylinder 33 is arranged horizontally, and the head end of the piston rod is fixedly connected with an intermediate transmission shaft 35 through threads. The intermediate drive shaft 35 extends or retracts with the cylinder working, driving the positioning mechanism 40 to slide horizontally.

Specifically as shown in FIG. 3 , the positioning mechanism 40 is slidably disposed on the mounting plate 12 and includes a power input plate 41 , a positioning plate 42 , a slider 43 , a positioning pin 45 , a positioning bearing 47 and a positioning bearing seat 48 . The power input plate is fixedly installed on the upper surface of the positioning plate 42, and is fixedly installed together with the intermediate transmission shaft 35 of the cylinder driving mechanism 30 through threads. The slide block 43 is fixedly installed on the lower surface of the positioning plate 42, and the slide block 43 is sleeved on the linear guide rail 34 provided on the upper surface of the guide rail base plate 31, so that the positioning plate 42 can be moved relative to the mounting plate by the cooperation of the slide block 43 and the linear guide rail 34. 12 slides left and right to extend and retract relative to the turntable 21.

As further shown in FIG. 3 , a positioning pin 45 is mounted on the positioning plate 42 close to the turntable 21 . The positioning pin 45 is fixedly mounted on the positioning plate 42 by threads, and is locked with a locking nut 44 at its end. The positioning pin 45 is sleeved with a positioning bearing seat 48 , and the positioning bearing seat 48 has a diameter matching the width of the notch 211 on the turntable 21 . The upper and lower ends of the positioning bearing seat 48 are provided with bearing mounting holes, and the positioning bearing seat 48 is rotatably installed on the positioning pin 45 through two positioning bearings 47 installed in the bearing mounting holes, and can rotate around the positioning The relative rotation of the pin 45 takes place. In addition, the positioning pin 45 between the positioning plate 42 and the bearing 47 close to the positioning plate 42 is also sleeved with a gasket 46, which separates the positioning plate 42 from the bearing 47, so as to facilitate the positioning of the bearing seat 48 relative to the positioning pin 45. turn.

The working principle of the positioning device according to the embodiment of the utility model is as follows:

When the turntable 21 turns to the center line of a notch groove 211 of the rotating disk 21 under the action of external force and when the center point of the positioning bearing seat 48 of the positioning mechanism 40 is on the same line, the rear end of the drive cylinder 33 is air-intake, and the piston rod of the drive cylinder 33 Drive the power input plate 41 to protrude through the intermediate transmission shaft 35, thereby driving the positioning bearing seat 48 to extend into the notch groove 211 of the turntable 21 on the same line with it, preventing the rotation of the turntable 21, and then realizing the precise positioning of the turntable 21, As shown in Figure 5. Next, the screen printing machine performs printing on the station corresponding to the notch groove 211 . After the printing is finished, the front end of the drive cylinder 33 is fed into the air, and the piston rod of the drive cylinder 33 drives the power input plate 41 to retract through the intermediate transmission shaft 35, thereby driving the positioning bearing seat 48 to withdraw from the gap of the turntable 21 on the same line. Outside the groove 211, as shown in FIG. 4 . At this time, the positioning of the turntable 21 is released, and the turntable 21 continues to rotate around the center axis 13 of the turntable under the action of an external force until the centerline of the next notch of the turntable 21 turns to be on the same line as the center point of the positioning bearing seat 48. , the positioning device performs positioning action again.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (8)

1. A positioning device for a multi-station screen printing machine, characterized in that it includes a fixed mount, a turntable that is rotatably mounted on one side of the fixed mount, and is slidably mounted on the fixed mount relative to The positioning mechanism on the other side of the turntable, and the driving cylinder that drives the positioning mechanism to extend and retract relative to the turntable, wherein, the outer periphery of the turntable is provided with a plurality of printing stations in the radial direction. An extended notch slot, the position of the positioning mechanism close to the turntable is provided with a positioning piece that can extend into and out of the notch slot with the extension and retraction of the positioning mechanism. 2. The positioning device of the multi-station screen printing machine according to claim 1, wherein the fixed frame includes a base plate installed on the frame of the printing machine, and mounting plates fixed on both sides of the base plate. plate and the central shaft of the turntable, the positioning mechanism is slidably mounted on the mounting plate, and the turntable is rotatably mounted on the central shaft of the turntable. 3. The positioning device of a multi-station screen printing machine according to claim 2, wherein a turntable bearing seat is fixed on the lower surface of the turntable, and the turntable bearing seat is mounted on the central axis of the turntable through a bearing. superior. 4. The positioning device of the multi-station screen printing machine according to claim 3, characterized in that, the upper and lower two ends of the turntable bearing seat form bearing installation holes, and the two bearings are installed on the bearings respectively. inside the installation hole. 5. The positioning device of the multi-station screen printing machine according to claim 2, wherein the positioning mechanism includes a power input plate fixedly connected with the piston rod of the drive cylinder, and a power input plate fixed to the power input plate. A connected positioning plate, the positioning plate is slidably mounted on the mounting plate, and the positioning member is provided on the position of the positioning plate close to the turntable. 6. The positioning device of the multi-station screen printing machine according to claim 5, wherein the positioning member includes a positioning pin mounted on the positioning plate, and a movable bearing is installed on the positioning pin through a bearing. A rotating positioning bearing seat, the positioning bearing seat has a diameter adapted to the width of the notch groove. 7. The positioning device of the multi-station screen printing machine according to claim 6, characterized in that, the upper and lower end faces of the positioning bearing seat form bearing installation holes, and the positioning bearing seat is installed on the The two bearings in the bearing mounting holes are rotatably mounted on the positioning pins. 8 . The positioning device of a multi-station screen printing machine according to claim 5 , wherein a slider is provided on the lower surface of the positioning plate, which is sleeved on the linear guide rail provided on the mounting plate.

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