Automatic screen frame adjusting mechanism in non-stop state

Abstract

The utility model relates to the field of silk-screen printing equipment, in particular to an automatic screen frame adjusting mechanism in a non-stop state, which comprises a screen frame part sleeve, the screen frame part sleeve is longitudinally and movably arranged and comprises a front beam frame and a screen frame, and two groups of frame adjusting components are arranged between the screen frame and the front beam frame, the frame adjusting assembly comprises a motor, an adjusting gear and an adjusting shaft set, an output shaft of the motor is connected with a driving gear, the adjusting gear is in transmission connection with the driving gear, the adjusting gear is rotationally arranged, and the adjusting shaft set comprises a first adjusting shaft and a second adjusting shaft; the adjusting gear rotates forwards and backwards to change the depth of threaded connection with the first adjusting shaft, so that the overall length of the adjusting gear and the first adjusting shaft is changed, the distance between the net frame and the front beam frame is changed, and the adjusting lengths of the two frame adjusting assemblies are the same in longitudinal adjustment and different in inclined adjustment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the screen printing equipment field, especially in a kind of screen frame automatic adjusting mechanism under non-stop state. BACKGROUND

[0002] Screen printing machine overprint board process is mainly to correct screen pattern and printing material (hereinafter referred to as paper) pattern, when screen pattern and paper pattern deviation occurs, it is necessary to stop correcting screen position, mainly horizontal correction, longitudinal correction, oblique correction, it is adjusted to motor parameter control to replace traditional adjusting mode (hand wheel rotation), to realize the position movement of frame by motor driving in printing process, without stopping to operate. UTILIT Y MODEL CONTENT

[0003] In view of the technical problems in the background art, the utility model aims at providing a kind of screen frame automatic adjusting mechanism under non-stop state, longitudinal correction and oblique correction are completed in non-stop state.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: the kind of screen frame automatic adjusting mechanism under non-stop state, including screen frame part cover, the screen frame part cover longitudinal movement is set, the screen frame part cover includes front beam frame and screen frame, two groups of frame adjusting components are provided between the screen frame and the front beam frame, wherein, the frame adjusting component includes motor, adjusting gear and adjusting shaft group, the motor output shaft is connected with driving gear, the adjusting gear is in transmission connection with the driving gear, the adjusting gear is rotationally arranged, the adjusting shaft group includes first adjusting shaft and second adjusting shaft, the gear shaft one end of the adjusting gear is in screw thread cooperation with the first adjusting shaft, the gear shaft other end of the adjusting gear is movably connected with the second adjusting shaft.

[0005] In this scheme, the adjusting gear positive and negative rotation can change the depth of screw thread connection with the first adjusting shaft, so that the overall length of the adjusting gear and the first adjusting shaft changes, the spacing of the screen frame and the front beam frame changes, the length of the two groups of frame adjusting components is adjusted to be the same for longitudinal adjustment, and is different for oblique adjustment, the motor drives the adjusting gear through the driving gear, and the load requirement is small.

[0006] Preferably, the adjusting gear and the driving gear are connected with a bridge gear, and the driving gear has fewer teeth than the adjusting gear.

[0007] In this scheme, the bridge gear is provided so that the driving gear and the adjusting gear have a proper spacing for motor installation, the driving gear has fewer teeth than the adjusting gear, and the adjusting precision is high.

[0008] Preferably, the gear shaft of the adjusting gear is threadedly connected with the second adjusting shaft at the other end, the first adjusting shaft is connected with the net frame through the first mounting seat, the second adjusting shaft is connected with the front beam frame through the second mounting seat, and the thread rotation direction of the first adjusting shaft is opposite to that of the second adjusting shaft.

[0009] In this scheme, the gear shaft of the adjusting gear is threadedly connected with the first adjusting shaft and the second adjusting shaft at the two ends respectively, the connection is stable, and the adjustment is stable and accurate.

[0010] Preferably, the controller is further arranged, the controller is connected with the motor, the controller drives the motor to act according to the deviation signal, the adjusting gear is engaged with a measuring gear, the gear shaft of the measuring gear is connected with a multi-turn potentiometer, the multi-turn potentiometer is used for sending the adjustment result to the controller, and the multi-turn potentiometer is arranged on the net frame through the mounting bracket.

[0011] In this scheme, the measuring gear rotates, the multi-turn potentiometer records the adjustment length and sends the adjustment length to the controller, so that the adjustment effect is confirmed.

[0012] In the embodiment, the front beam frame and the net frame are made of aluminum.

[0013] In this scheme, the main part of the net frame sleeve is made of aluminum, so that the overall weight of the frame is reduced, and the load requirement of the motor is reduced.

[0014] Preferably, two groups of frame supporting mechanisms are further arranged between the net frame and the front beam frame, the frame supporting mechanism comprises a limiting block and a rear corner frame, the limiting block is arranged on the front beam frame, the rear corner frame is connected with the first mounting seat, and the limiting block is provided with an opening through which the rear corner frame passes.

[0015] In this scheme, the rear corner frame abuts against the upper surface of the front beam frame, so that the front beam frame effectively supports the net frame, and the limiting block limits the shaking of the rear corner frame.

[0016] The beneficial effects of the utility model are that the forward and reverse rotation of the adjusting gear can change the depth of the thread connection with the first adjusting shaft, the overall length of the adjusting gear and the first adjusting shaft is changed, the distance between the net frame and the front beam frame is changed, the length adjustment of the two groups of frame adjustment components is longitudinal when the length adjustment is the same, and the length adjustment is inclined when the length adjustment is different. Therefore, the utility model has substantial characteristics and progress compared with the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0017] The related details and working principles of the embodiments of the utility model are described below in combination with the drawings.

[0018] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0019] Figure 2 The three-dimensional structure schematic diagram without the left wallboard of the utility model.

[0020] In the figure: 1, the net frame part cover; 2, front beam frame; 3, net frame; 4, frame adjusting assembly; 5, motor; 6, drive gear; 7, adjusting gear; 8, adjusting shaft group; 9, first adjusting shaft; 10, second adjusting shaft; 11, overbridge gear; 12, first mounting seat; 13, second mounting seat; 14, measuring gear; 15, multi-turn potentiometer; 16, mounting bracket; 17, frame support mechanism; 18, limit block; 19, rear corner frame. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model; obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments in the utility model without creative labor belong to the protection scope of the utility model.

[0022] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0023] In the description of the present application, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0024] Referring to the drawings Figures 1-2 , the automatic adjusting mechanism of the net frame in the embodiment of the present embodiment includes a net frame part cover 1, the net frame part cover 1 is longitudinally movable, the net frame part cover 1 includes a front beam frame 2 and a net frame 3, the front beam frame 2 and the net frame 3 are made of aluminum, and two groups of frame adjusting assemblies 4 and two groups of frame support mechanisms 17 are provided between the net frame 3 and the front beam frame 2.

[0025] The frame adjusting assembly 4 comprises a motor 5, an adjusting gear 7 and an adjusting shaft group 8. The output shaft of the motor 5 is connected with a driving gear 6. A bridging gear 11 is engaged between the driving gear 6 and the adjusting gear 7. The driving gear 6 has less teeth than the adjusting gear 7. The adjusting gear 7 is rotatably arranged. The adjusting shaft group 8 comprises a first adjusting shaft 9 and a second adjusting shaft 10. One end of the gear shaft of the adjusting gear 7 is threadedly connected with the first adjusting shaft 9. The other end of the gear shaft of the adjusting gear 7 is threadedly connected with the second adjusting shaft 10. The first adjusting shaft 9 is connected with the front beam frame 2 through a first mounting base 12. The second adjusting shaft 10 is connected with the front beam frame 2 through a second mounting base 13. The thread rotation direction of the first adjusting shaft 9 is opposite to that of the second adjusting shaft 10. The frame supporting mechanism 17 comprises a limiting block 18 and a rear corner frame 19. The limiting block 18 is mounted on the front beam frame 2. The rear corner frame 19 is connected with the first mounting base 12. The limiting block 18 is provided with an opening through which the rear corner frame 19 passes.

[0026] In the embodiment, the motor 5 drives the driving gear 6 to rotate, and drives the adjusting gear 7 to rotate through the bridging gear 11. The thread connection depth of the gear shaft of the adjusting gear 7 with the first adjusting shaft 9 and the second adjusting shaft 10 is synchronously increased or decreased, that is, the overall length of the first adjusting shaft 9, the adjusting gear 7 and the second adjusting shaft 10 is increased or decreased. If the adjusting gear 7 rotates in the positive direction relative to the first adjusting shaft 9, it rotates in the reverse direction relative to the second adjusting shaft 10. Therefore, the thread rotation directions of the first adjusting shaft 9 and the second adjusting shaft 10 are opposite, so that the thread depth change is synchronous. At this time, the pitches are uniform, which is convenient for processing.

[0027] In other alternative embodiments, the connection between the gear shaft of the adjusting gear 7 and the second adjusting shaft 10 can be sleeve connection. An elastic member is arranged between the adjusting gear 7 and the front beam frame 2 to adapt to the expansion and contraction. The second adjusting shaft 10 plays a guiding role. At this time, the second adjusting shaft 10 can be connected with the front beam frame 2 or the net frame 3. The thread rotation directions of the first adjusting shaft 9 and the second adjusting shaft 10 can be the same. Different pitches are designed to produce an adjustment length difference to realize the overall length change.

[0028] Referring to FIG. 1, Figure 2 The controller is connected with the motor 5 in control. The controller drives the motor 5 to act according to the deviation signal. The adjusting gear 7 is engaged with a measuring gear 14. The gear shaft of the measuring gear 14 is connected with a multi-turn potentiometer 15. The multi-turn potentiometer 15 is used to send the adjustment result to the controller. The multi-turn potentiometer 15 is arranged on the net frame 3 through a mounting bracket 16.

[0029] In the embodiment, the deviation of the paper pattern and the screen pattern is monitored by visual inspection or a sensor, and a deviation signal is sent, the controller derives an adjustment parameter according to the deviation signal, controls the operation of the motor 5, realizes the oblique adjustment or the longitudinal adjustment, the multi-turn potentiometer 15 monitors and sends the adjustment result to the controller to confirm that the adjustment is in place, and in the printing process, the position movement of the frame is driven by the motor 5, and it is not necessary to stop to operate, and the traditional adjustment mode (hand wheel rotation) is adjusted to the parameter control of the motor 5, the data is more accurate, the operation is more convenient, and the intelligentization can be further realized in cooperation with the sample table.

[0030] The above is the preferred embodiment of the present application, and it should be pointed out that the protection scope of the present application is not limited to this. For those skilled in the art, on the premise of not departing from the technical range disclosed by the present application, many improvements and refinements or equivalent replacements can be made, which are also regarded as the protection scope of the present application.

Claims

1. An automatic adjustment mechanism for a mesh frame under non-stop operation, comprising a mesh frame sleeve (1), the mesh frame sleeve (1) being longitudinally movable, the mesh frame sleeve (1) comprising a front beam frame (2) and a mesh frame frame (3), and two sets of frame adjustment components (4) being provided between the mesh frame frame frame (3) and the front beam frame (2), characterized in that: The frame adjusting assembly (4) comprises A motor (5) whose output shaft is connected with a driving gear (6); An adjusting gear (7) in transmission connection with the driving gear (6), the adjusting gear (7) being rotatably arranged; An adjusting shaft group (8) comprising a first adjusting shaft (9) and a second adjusting shaft (10), one end of the gear shaft of the adjusting gear (7) being in threaded cooperation with the first adjusting shaft (9), the other end of the gear shaft of the adjusting gear (7) being in movable connection with the second adjusting shaft (10).

2. The automatic screen frame adjusting mechanism in the non-stop state according to claim 1, characterized in that: A bridge gear (11) is connected between the adjusting gear (7) and the driving gear (6), the driving gear (6) having less teeth than the adjusting gear (7).

3. The automatic screen frame adjusting mechanism in the non-stop state according to claim 1, characterized in that: The other end of the gear shaft of the adjusting gear (7) is in threaded connection with the second adjusting shaft (10), the first adjusting shaft (9) being connected with the net frame (3) through a first mounting base (12), the second adjusting shaft (10) being connected with the front beam frame (2) through a second mounting base (13), the screw rotation direction of the first adjusting shaft (9) being opposite to that of the second adjusting shaft (10).

4. The automatic screen frame adjusting mechanism in the non-stop state according to claim 1, characterized in that: A controller is further comprised, the controller being in control connection with the motor (5), the controller driving the motor (5) to act according to a deviation signal, the adjusting gear (7) being engaged with a measuring gear (14), the gear shaft of the measuring gear (14) being connected with a multi-turn potentiometer (15), the multi-turn potentiometer (15) being used to send an adjusting result to the controller, the multi-turn potentiometer (15) being arranged on the net frame (3) through a mounting support (16).

5. The automatic screen frame adjusting mechanism in the non-stop state according to claim 1, characterized in that: The front beam frame (2) and the net frame (3) are made of aluminum.

6. The automatic screen frame adjusting mechanism in the non-stop state according to claim 3, characterized in that: Two groups of frame supporting mechanisms (17) are further provided between the net frame (3) and the front beam frame (2), the frame supporting mechanism (17) comprising a limiting block (18) and a rear corner frame (19), the limiting block (18) being mounted on the front beam frame (2), the rear corner frame (19) being connected with the first mounting base (12), the limiting block (18) being provided with an opening through which the rear corner frame (19) passes.

Images