Conveying position adjusting mechanism of glass silk screen printing machine

Abstract

The utility model relates to the technical field of auxiliary mechanisms of screen printing machines, in particular to a conveying position adjusting mechanism of a glass screen printing machine, which comprises a butt clamp mechanism mounted on a rack of a conveyor, and the butt clamp mechanism comprises a first support and a second support which are symmetrically arranged along the width of the conveyor and are in sliding connection with the rack. The first support is fixedly connected with a first rack in the width direction of the conveyor, the second support is fixedly connected with a second rack in the width direction of the conveyor, the tooth surface of the first rack and the tooth surface of the second rack are arranged adjacently, the rack is rotationally connected with a gear meshed with the first rack and the second rack at the same time, and the gear is in transmission connection with a positive and negative rotation motor. And the positive and negative rotation motor is electrically connected with a glass in-place detection mechanism. According to the device, the glass sheet is pushed and adjusted to the middle position from the two sides, the four corners of the glass sheet are prevented from being collided intensively, the integrity of the glass sheet is better guaranteed, and the damage probability of the glass sheet is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary mechanisms of screen printing machines, in particular to a conveying position regulating mechanism for a glass screen printing machine. Background Art

[0002] Glass screen printer is a device specially used for screen printing on glass. It can print designs or patterns directly onto glass to form a durable and colorful decorative effect.

[0003] When the glass screen printer is working, the stacked glass sheets need to be transferred one by one to the conveyor of the screen printer, and then moved to the main position of the screen printer through the conveyor for screen printing. If the robot transfers the glass sheets to the conveyor, the position may be more uniform, but when the glass sheets are placed on the conveyor one by one manually, the position deviation of the glass sheets is relatively large. Figure 1 , located to ensure that the position of the glass piece is facing the screen printing position of the screen printer. In the prior art, two symmetrical guide rails with inclined surfaces are generally used to adjust the position of the glass piece. When the glass piece moves to the inclined position, it is gradually adjusted to the correct position under the guidance of the inclined surface. However, when the glass piece contacts the inclined surface, the four corners of the glass piece often collide with the inclined surface, and the corners of the glass piece are often damaged, causing quality problems. Utility Model Content

[0004] The utility model aims to solve the problem that the glass sheets are easily damaged by the inclined surface guide rail, and proposes a conveying position adjustment mechanism for a glass screen printing machine.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A conveying position adjustment mechanism for a glass screen printing machine includes a clamping mechanism installed on a conveyor frame, the clamping mechanism includes a first bracket and a second bracket symmetrically arranged along the width of the conveyor and slidably connected to the frame, the first bracket is fixedly connected to a first rack along the width of the conveyor, the second bracket is fixedly connected to a second rack along the width of the conveyor, the tooth surface of the first rack is adjacent to the tooth surface of the second rack, the frame is rotatably connected to a gear that simultaneously meshes with the first rack and the second rack, the gear transmission is connected to a forward and reverse motor, and the forward and reverse motor is electrically connected to a glass in place detection mechanism.

[0007] The glass in-place detection mechanism includes a PLC controller, a microswitch fixed to the frame, and a vertically arranged lever. The lever is rotatably connected to the frame through a pin shaft. In the natural state, the lowest point of the lever is lower than the top surface of the glass sheet. When the glass sheet moves below the lowest point of the lever, it can push the lever to rotate around the pin shaft, so that the upper part of the lever pushes the microswitch to act. The forward and reverse motor and the microswitch are both electrically connected to the PLC controller.

[0008] A third roller is rotatably connected to the bottom of the lever, and the axis of the third roller is arranged along the width direction of the conveyor.

[0009] A plurality of first rollers are rotatably connected to one side of the first bracket close to the second bracket, and the axes of the first rollers are vertically arranged;

[0010] A plurality of second rollers are rotatably connected to one side of the second bracket close to the first bracket, and the axes of the second rollers are vertically arranged.

[0011] For the glass screen printing machine conveying position adjusting mechanism proposed by the present invention, the beneficial effect is that the device pushes and adjusts the glass sheet to the center position from both sides, avoiding concentrated impact on the four corners of the glass sheet, better ensuring the integrity of the glass sheet, and reducing the probability of glass sheet damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the prior art;

[0013] Figure 2 is a top view structural schematic diagram of the present invention;

[0014] Figure 3 is a front view structural schematic diagram of the glass in-place detection mechanism of the present invention Figure 1 ;

[0015] Figure 4 is a front view structural schematic diagram of the glass in-place detection mechanism of the present invention Figure 2 ;

[0016] Figure 5 is a schematic diagram of the control principle of the electrical components of the present invention.

[0017] In the figure: first bracket 1, first roller 2, second bracket 3, second roller 4, first rack 5, second rack 6, gear 7, microswitch 8, pin shaft 9, lever 10, third roller 11. DETAILED DESCRIPTION OF THE INVENTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figures 2 - 5 A conveying position adjustment mechanism for a glass screen printing machine includes a clamping mechanism installed on a conveyor frame, the clamping mechanism includes a first bracket 1 and a second bracket 3 symmetrically arranged along the width of the conveyor and slidably connected to the frame, that is, the first bracket 1 and the second bracket 3 can slide along the width direction of the conveyor, the first bracket 1 is fixedly connected with a first rack 5 along the width of the conveyor, the second bracket 3 is fixedly connected with a second rack 6 along the width of the conveyor, the tooth surface of the first rack 5 is adjacent to the tooth surface of the second rack 6, the frame is rotatably connected with a gear 7 that simultaneously meshes with the first rack 5 and the second rack 6, the gear 7 is transmission-connected to a forward and reverse motor, and the forward and reverse motor is electrically connected to a glass in place detection mechanism.

[0020] refer to Figure 2 When the glass piece moves to the glass in place detection mechanism, the signal that the glass has reached the position is fed back and controls the forward and reverse motors to reverse. At this time, under the cooperation of the gear rack, the first bracket 1 and the second bracket 3 are brought close to each other, and the position of the glass piece is pushed to the center position through the first bracket 1 and the second bracket 3, and then the forward and reverse motors are reset forward to wait for the arrival of the next glass piece. This device pushes and adjusts the glass piece to the center position from both sides to avoid concentrated impact on the four corners of the glass piece, better ensure the integrity of the glass piece, and reduce the probability of damage to the glass piece.

[0021] As a detection method, refer to Figure 3 , Figure 4 The glass in place detection mechanism includes a PLC controller, a micro switch 8 fixed to the frame, and a vertically arranged lever 10. The lever 10 is rotatably connected to the frame through a pin shaft 9. In a natural state, the lowest point of the lever 10 is lower than the top surface of the glass sheet. When the glass sheet moves below the lowest point of the lever 10, it can push the lever 10 to rotate around the pin shaft 9, so that the upper part of the lever 10 pushes the micro switch 8 to operate. The forward and reverse motors and the micro switch 8 are electrically connected to the PLC controller.

[0022] refer to Figure 3 When the glass sheet has not moved to the bottom of the lever 10, the lever 10 is in a naturally hanging state. Figure 4 When the glass piece moves to the bottom of the lever 10, due to its thickness, the glass piece will push the lever 10 to rotate counterclockwise around the pin 9. At this time, the top of the lever 10 pushes the micro switch 8 to operate, triggering the forward and reverse motor to reverse. When the glass piece leaves the bottom of the lever 10, the micro switch 8 is reset, triggering the forward and reverse motor to move forward.

[0023] The bottom of the lever 10 is rotatably connected to the third roller 11, and the axis of the third roller 11 is arranged along the width direction of the conveyor, so that the third roller 11 can roll on the glass sheet. Preferably, fluff is provided on the surface of the third roller 11 to avoid scratching the glass.

[0024] A plurality of first rollers 2 are rotatably connected to one side of the first bracket 1 close to the second bracket 3, and the axes of the first rollers 2 are arranged vertically; a plurality of second rollers 4 are rotatably connected to one side of the second bracket 3 close to the first bracket 1, and the axes of the second rollers 4 are arranged vertically. The rollers are provided to facilitate the passage of the glass sheet between the first bracket and the second bracket.

[0025] The specific control logic of this device is as follows:

[0026] Reference Figure 5 , one terminal of the microswitch is connected to the input terminal of the PLC (usually the common terminal COM), and the other terminal is connected to an input channel of the PLC; when the microswitch is closed, it shorts the input channel and the common terminal of the PLC, and the PLC detects this signal;

[0027] The output channel of the PLC is connected to the control input of the motor driver of the forward and reverse motor;

[0028] The motor driver may need to receive different signals to control the forward and reverse rotation of the motor, such as two independent control signals or a control signal plus a direction signal;

[0029] The output terminal of the motor driver is connected to the terminal of the motor.

[0030] The working procedure is as follows:

[0031] Configure the input port in the PLC program to read the status of the microswitch, and configure the output port to control the motor driver.

[0032] When the microswitch is closed (pressed), the PLC detects the input signal and triggers the program logic for the motor to reverse.

[0033] When the microswitch is opened (released), the PLC detects the change of the input signal and triggers the program logic for the motor to rotate forward.

[0034] This device can use the SINAMICS V90 controller of Siemens, the microswitch can use the microswitch of OMRON, and the motor driver can use the 1S series and G5 series of OMRON. Of course, other models in the prior art can also be used, without specific limitation.

[0035] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, any technical solution, concept, and design obtained by equivalent substitution or change should be covered within the protection scope of the present utility model.

Claims

1. A conveying position adjusting mechanism for a glass screen printing machine, characterized in that, The invention comprises a clamping mechanism installed on a conveyor frame, the clamping mechanism comprises a first bracket (1) and a second bracket (3) which are symmetrically arranged along the width of the conveyor and slidably connected to the frame, the first bracket (1) is fixedly connected with a first rack (5) along the width of the conveyor, the second bracket (3) is fixedly connected with a second rack (6) along the width of the conveyor, the tooth surface of the first rack (5) and the tooth surface of the second rack (6) are arranged adjacent to each other, the frame is rotatably connected with a gear (7) which simultaneously meshes with the first rack (5) and the second rack (6), the gear (7) is transmission-connected with a forward and reverse motor, and the forward and reverse motor is electrically connected with a glass in place detection mechanism.

2. The conveying position adjusting mechanism of a glass screen printing machine according to claim 1, characterized in that, The glass in-place detection mechanism comprises a PLC controller, a micro switch (8) fixed to a frame, and a lever (10) arranged vertically. The lever (10) is rotatably connected to the frame via a pin shaft (9). In a natural state, the lowest point of the lever (10) is lower than the top surface of the glass sheet. When the glass sheet moves below the lowest point of the lever (10), it can push the lever (10) to rotate around the pin shaft (9), so that the upper part of the lever (10) pushes the micro switch (8) to operate. The forward and reverse motors and the micro switch (8) are electrically connected to the PLC controller.

3. The conveying position adjusting mechanism of a glass screen printing machine according to claim 2, wherein, The bottom of the lever (10) is rotatably connected to a third roller (11), and the axis of the third roller (11) is arranged along the width direction of the conveyor.

4. A conveying position adjusting mechanism of a glass screen printing machine according to claim 1, characterized in that, A side of the first bracket (1) close to the second bracket (3) is rotatably connected to a plurality of first rollers (2), and the axes of the first rollers (2) are arranged vertically; A side of the second bracket (3) close to the first bracket (1) is rotatably connected to a plurality of second rollers (4), and the axes of the second rollers (4) are arranged vertically.

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