Slit adjustment and detection feedback device

Abstract

The invention belongs to the technical field of slit coating, and discloses a slit adjustment and detection feedback device which comprises a supporting frame. A pair of symmetrically arranged sliding rails is fixed on the support frame, and the two sliding rails are vertically arranged; the two sliding rails are internally and rotatably connected with coaxially-arranged screws, the thread directions of the two screws are the same, sliding blocks are slidably clamped in the sliding rails, the two sliding blocks are symmetrically arranged, the screws penetrate through the sliding blocks and are in threaded connection with the sliding blocks, a horizontally-arranged connecting plate is fixedly connected between the two sliding blocks, and a mounting plate is fixed to the lower end of the connecting plate. The lower end of the mounting plate is slidably clamped with a pair of die heads which are arranged in parallel, and the die heads and the connecting plate are coaxially arranged; mounting bases are fixed to the upper ends of the sliding rails, the upper ends of the screws extend out of the sliding rails and are rotationally connected with the mounting bases, and the upper ends of the screws are fixedly sleeved with first gears; and the two ends of the die head are synchronously lifted, so that the heights of the two ends of the die head are effectively ensured to be the same all the time.

Description

Technical Field

[0001] The invention belongs to the technical field of slit coating, and in particular relates to a slit adjustment and detection feedback device. Background Art

[0002] In the field of slit coating, slit coating technology is widely used in various production processes as a key industrial coating method; however, when performing slit coating, it is crucial to select a die of corresponding width according to the width of the product to be coated; when the product to be coated is wider, a wider die needs to be selected accordingly, and during the coating process, in order to lift and lower the wider die, it is usually necessary to set a lifting mechanism at both ends of the die, and drive the die to be lifted and lowered by two sets of lifting mechanisms. However, since the lifting speeds of the lifting mechanisms at both ends may be different, the heights of the two ends of the die are inconsistent, which ultimately affects the coating effect. Therefore, in the prior art, there is a problem that the lifting and lowering of the two ends of the die are not synchronized during the die lifting and lowering process, which easily leads to a difference in height at both ends of the die. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a slit adjustment and detection feedback device, which solves the problem in the prior art that the two ends of the die head are not raised and lowered synchronously during the die head lifting and lowering adjustment process, which easily leads to height differences at both ends of the die head.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A slit adjustment device, including a support frame;

[0006] A pair of symmetrically placed slide rails are fixed on the support frame, and both slide rails are placed vertically;

[0007] The two slide rails are both rotatably connected with coaxially placed screws, the thread directions of the two screws are the same, the slide rails are both slidably clamped with sliders, the two sliders are symmetrically placed, the screws pass through the sliders and are threadedly connected to the sliders, a horizontally placed connecting plate is fixedly connected between the two sliders, a mounting plate is fixed at the lower end of the connecting plate, a pair of juxtaposed die heads are slidably clamped at the lower end of the mounting plate, and the die heads are coaxially placed with the connecting plate;

[0008] A mounting seat is fixed on the upper end of the slide rail, the upper end of the screw rod extends out of the slide rail and is rotatably connected to the mounting seat, the upper end of the screw rod is fixedly sleeved with a first gear, a first annular synchronous toothed belt is sleeved between the two first gears, a rotating motor is fixed on any mounting seat, and the output end of the rotating motor is connected to the upper end of the corresponding side screw rod;

[0009] The lower end surface of the mounting plate is provided with strip grooves near both ends, the two strip grooves correspond to the two screw rods one by one, the strip grooves are placed vertically with the connecting plate, and the mounting plate is provided with two adjustment units corresponding to the two strip grooves one by one;

[0010] The adjusting units all include a rotating shaft vertically placed on the connecting plate, the central axis of the rotating shaft is located in the symmetry plane of the two die heads, the lower end of the rotating shaft extends into the strip groove, and the rotating shaft is rotatably connected to the connecting plate, the lower end of the rotating shaft is fixedly sleeved with a second gear rotating in the strip groove, the second gear is meshed with a pair of racks placed symmetrically about the central axis of the rotating shaft, the racks are coaxially placed with the strip groove, the two racks correspond to the two die heads one by one, and any rack is fixed to the corresponding die head;

[0011] The sliders are provided with round through holes coaxially arranged with the screw rod, and sleeves are rotatably connected in the round through holes. The upper and lower ends of the sleeves are open, and the sleeves are threadedly sleeved on the screw rod. The upper and lower ends of the sleeves are fixed with first limiting rings coaxially arranged, and the screw rods pass through the rings of the first limiting rings. The sliders are located between the two corresponding first limiting rings, and the connecting plate is provided with a pair of symmetrically arranged clamping units, and the two clamping units correspond to the two sleeves one by one, and the clamping units are detachably connected to the first limiting rings on the upper ends of the corresponding sleeves;

[0012] A gear ring is fixed on the upper end of the first limiting ring above the sleeve, and the gear ring is placed coaxially with the corresponding sleeve. The screw is located inside the corresponding gear ring. A third gear is fixedly sleeved on the upper end of the rotating shaft, and a second annular synchronous belt is sleeved between the gear ring and the third gear on the corresponding side.

[0013] The clamping units all include a telescopic cylinder fixed on the connecting plate, the output end of the telescopic cylinder is horizontally facing the first limit ring at the upper end of the corresponding sleeve, and a clamping block is fixed on the output end of the telescopic cylinder;

[0014] A groove matching the clamping block is provided on the first limiting ring circumferential wall at the upper end of the sleeve;

[0015] There are multiple grooves on the peripheral wall of the first limiting ring at the upper end of the sleeve, and the multiple grooves on the first limiting ring are evenly distributed in a ring shape around the central axis of the corresponding sleeve;

[0016] A second limiting ring is fixed at both upper and lower ends of the gear ring, and the second limiting ring is placed coaxially with the corresponding gear ring. The outer diameter of the second limiting ring is larger than the outer diameter of the gear ring. A third limiting ring is fixed at both upper and lower ends of the third gear, and the outer diameter of the third limiting ring is larger than the outer diameter of the third gear.

[0017] The racks are all fixed with coaxially placed clamping strips, and the side walls of the strip-shaped grooves are each provided with a pair of slide grooves corresponding to the clamping strips, and the clamping strips are slidably clamped in the corresponding slide grooves;

[0018] A detection feedback device is used to detect the horizontality of the lower end of the die head in a slit adjustment device, including a pair of symmetrically placed grating rulers, the grating rulers correspond to the screw rods one by one, the two grating rulers are respectively fixed to the two ends of the connecting plate, and a pair of symmetrically placed laser generators are fixedly installed on the support frame, and the laser generators correspond to the grating rulers one by one.

[0019] Beneficial effects of the present invention:

[0020] 1. By turning on the rotating motor, the rotating motor drives the screw connected to it to rotate, and the screw drives the first gear and the first annular synchronous belt, thereby realizing synchronous driving of the two screws, and the screw drives the slider to perform thread transmission, and the two sliders drive the two ends of the connecting plate to rise and fall synchronously, and the connecting plate drives the mounting plate and the two die heads, so as to facilitate the lifting and lowering adjustment of the die head height, and make the two ends of the die head rise and fall synchronously, effectively ensuring that the heights of the two ends of the die head are always the same;

[0021] 2. Through the arrangement of the strip groove, the rotating shaft, the second gear and the rack, it is convenient to drive the two die heads to move away from or closer to each other, thereby adjusting the size of the gap between the two die heads; at the same time, with the arrangement of the sleeve, the first limit ring, the telescopic cylinder, the block and the groove, it is possible to select two working states of thread transmission of the sleeve along the screw or synchronous rotation, and through the arrangement of the gear ring, the third gear and the second annular synchronous toothed belt, when the sleeve rotates synchronously with the screw, it can ensure that the rotating shafts on both sides rotate synchronously with the screws on both sides, thereby adjusting the size of the gap between the two die heads, while ensuring that the size of the gap at both ends of the die heads remains consistent during the adjustment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention from different viewing angles;

[0025] Figure 3 It is a schematic diagram of the structure of the screw rod of the present invention;

[0026] Figure 4 It is a partial structural schematic diagram of the slider of the present invention;

[0027] Figure 5 It is a partial structural schematic diagram of the sleeve of the present invention;

[0028] Figure 6 It is a partial structural schematic diagram of the rotating shaft of the present invention;

[0029] Figure 7 It is a partial structural schematic diagram of the rack of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figures 1 to 7 As shown, the slit adjustment device comprises a support frame 1;

[0032] A pair of symmetrically placed slide rails 2 are fixed on the support frame 1, and both slide rails 2 are placed vertically;

[0033] The two slide rails 2 are both rotatably connected with coaxially placed screws 3, and the thread directions of the two screws 3 are the same. The slide rails 2 are both slidably clamped with sliders 4, and the two sliders 4 are symmetrically placed. The screws 3 pass through the sliders 4 and are threadedly connected to the sliders 4. A horizontally placed connecting plate 5 is fixedly connected between the two sliders 4, and a mounting plate 6 is fixed at the lower end of the connecting plate 5. A pair of juxtaposed die heads 7 are slidably clamped at the lower end of the mounting plate 6, and the die heads 7 are coaxially placed with the connecting plate 5.

[0034] The upper ends of the slide rails 2 are all fixed with mounting seats 8, the upper ends of the screw rods 3 are all extended out of the slide rails 2 and are rotatably connected to the mounting seats 8, the upper ends of the screw rods 3 are all fixedly sleeved with first gears 9, and a first annular synchronous toothed belt 10 is sleeved between the two first gears 9. A rotating motor 11 is fixed on any mounting seat 8, and the output end of the rotating motor 11 is connected to the upper end of the corresponding side screw rod 3;

[0035] Preferably, the housing of the rotating motor 11 in the present application is a servo motor;

[0036] By turning on the rotating motor 11, the rotating motor 11 drives the screw 3 connected thereto to rotate, and the screw 3 drives the first gear 9 and the first annular synchronous belt 10, thereby realizing synchronous driving of the two screws 3, and the screw 3 drives the slider 4 to perform thread transmission, and the two sliders 4 drive the two ends of the connecting plate 5 to rise and fall synchronously, and the connecting plate 5 drives the mounting plate 6 and the two die heads 7, so as to facilitate the lifting and lowering adjustment of the height of the die head 7, and effectively ensure that the heights of the two ends of the die head 7 are always the same.

[0037] In order to facilitate the size of the gap between the two die heads 7, the lower end surface of the mounting plate 6 is provided with strip grooves 61 near both ends, the two strip grooves 61 correspond to the two screws 3 one by one, the strip grooves 61 are placed vertically with the connecting plate 5, and the mounting plate 6 is provided with two adjustment units corresponding to the two strip grooves 61 one by one;

[0038] The adjusting units all include a rotating shaft 12 vertically placed on the connecting plate 5, the central axis of the rotating shaft 12 is located in the symmetry plane of the two die heads 7, the lower end of the rotating shaft 12 extends into the strip groove 61, and the rotating shaft 12 is rotatably connected to the connecting plate 5, the lower end of the rotating shaft 12 is fixedly sleeved with a second gear 121 that rotates in the strip groove 61, and the second gear 121 is meshed with a pair of racks 122 that are centrally symmetrically placed about the central axis of the rotating shaft 12, the racks 122 are coaxially placed with the strip groove 61, the two racks 122 correspond to the two die heads 7 one by one, and any rack 122 is fixed to the corresponding die head 7;

[0039] The rotating shaft 12 drives the second gear 121, the second gear 121 drives the corresponding two racks 122, and the racks 122 drive the corresponding ends of the two die heads 7 to move closer to or away from each other; and by synchronously rotating the rotating shafts 12 on both sides, it can be ensured that the size of the gap at both ends of the die heads 7 is always equal during the distance adjustment between the two die heads 7.

[0040] The sliders 4 are provided with round through holes coaxially placed with the screw rod 3, and sleeves 13 are rotatably connected in the round through holes. The upper and lower ends of the sleeves 13 are open, and the sleeves 13 are threadedly sleeved on the screw rod 3. The upper and lower ends of the sleeves 13 are fixed with first limiting rings 14 coaxially placed, and the screw rods 3 pass through the first limiting rings 14. The sliders 4 are located between the two corresponding first limiting rings 14, and the connecting plate 5 is provided with a pair of symmetrically placed clamping units, and the two clamping units correspond to the two sleeves 13 one by one, and the clamping units are detachably connected to the first limiting rings 14 on the upper ends of the corresponding sleeves 13;

[0041] When the clamping unit is clamped with the corresponding first limiting ring 14, when the screw 3 is rotated, the screw 3 drives the sleeve 13 to perform threaded transmission; when the clamping unit is separated from the corresponding first limiting ring 14, when the screw 3 is rotated, the screw 3 drives the sleeve 13 to rotate, so as to realize the selection of the two working states of the sleeve 13.

[0042] A gear ring 15 is fixed on the upper end of the first limiting ring 14 above the sleeve 13, and the gear ring 15 is placed coaxially with the corresponding sleeve 13. The screw 3 is located on the inner side of the corresponding gear ring 15, and a third gear 16 is fixedly sleeved on the upper end of the rotating shaft 12. A second annular synchronous toothed belt 17 is sleeved between the gear ring 15 and the third gear 16 on the corresponding side; when the clamping units are separated from the corresponding first limiting ring 14, when the rotating motor 11 drives the screw 3 to rotate, the first gear 9 and the first annular synchronous toothed belt 10 are matched to keep the synchronous rotation of the screws 3 on both sides, and at this time, the screw 3 drives the corresponding sleeve 13 and the first limiting ring 14 to rotate, and the gear ring 15, the second annular synchronous toothed belt 17 and the third gear 16 are matched to drive the synchronous rotation of the rotating shafts 12 on both sides, so as to adjust the gap between the two die heads 7, and ensure that the gap between the two ends of the die head 7 remains consistent during the adjustment process.

[0043] The clamping units all include a telescopic cylinder 18 fixed on the connecting plate 5, the output end of the telescopic cylinder 18 is horizontally facing the first limit ring 14 at the upper end of the corresponding sleeve 13, and a clamping block 181 is fixed to the output end of the telescopic cylinder 18;

[0044] The first limiting ring 14 at the upper end of the sleeve 13 is provided with a groove 141 adapted to the clamping block 181;

[0045] The telescopic cylinder 18 is turned on to drive the block 181 to be inserted into or away from the groove 141 , thereby realizing a detachable connection between the connecting plate 5 and the first limiting ring 14 at the upper end of the sleeve 13 .

[0046] There are multiple grooves 141 on the peripheral wall of the first limiting ring 14 at the upper end of the sleeve 13, and the multiple grooves 141 on the first limiting ring 14 are evenly distributed in a ring shape around the central axis of the corresponding sleeve 13; so that the block 181 can be inserted into the groove 141 to fix the first limiting ring 14.

[0047] Second limiting rings 151 are fixed at both upper and lower ends of the gear ring 15. The second limiting rings 151 are placed coaxially with the corresponding gear ring 15. The outer diameter of the second limiting ring 151 is larger than the outer diameter of the gear ring 15. Third limiting rings 161 are fixed at both upper and lower ends of the third gear 16. The outer diameter of the third limiting ring 161 is larger than the outer diameter of the third gear 16. Through the arrangement of the second limiting ring 151 and the third limiting ring 161, the second annular synchronous toothed belt 17 is prevented from separating and falling off from the gear ring 15 and the third gear 16 during the lifting and lowering of the sleeve 13, the slider 4 and the connecting plate 5.

[0048] A coaxially placed clamping strip 123 is fixed on the rack 122, and a pair of sliding grooves corresponding to the clamping strip 123 are opened on the side wall of the strip groove 61, and the clamping strip 123 is slidably clamped in the corresponding sliding groove; through the coordinated setting of the sliding groove and the clamping strip 123, the guiding property of the rack 122 during the movement process is further improved.

[0049] A detection feedback device is used to detect the horizontality of the lower end of the die head 7 in the slit adjustment device, including a pair of symmetrically placed grating rulers 19, the grating rulers 19 correspond to the screw rods 3 one by one, the two grating rulers 19 are respectively fixed to the two ends of the connecting plate 5, and a pair of symmetrically placed laser generators 191 are fixedly installed on the support frame 1, the laser generators 191 correspond to the grating rulers 19 one by one; according to the positions of the two laser emitters irradiated on the corresponding grating rulers 19, whether the lower end of the connecting plate 5 is horizontal is monitored and feedback is given.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A slit adjustment device, comprising a support frame (1), characterized in that: A pair of symmetrically placed slide rails (2) are fixed on the support frame (1), and both slide rails (2) are placed vertically; The two slide rails (2) are both rotatably connected with coaxially placed screw rods (3), the thread directions of the two screw rods (3) are the same, the slide rails (2) are both slidably clamped with sliders (4), the two sliders (4) are symmetrically placed, the screw rods (3) pass through the sliders (4) and are threadedly connected with the sliders (4), a horizontally placed connecting plate (5) is fixedly connected between the two sliders (4), a mounting plate (6) is fixed at the lower end of the connecting plate (5), a pair of juxtaposed die heads (7) are slidably clamped at the lower end of the mounting plate (6), and the die heads (7) are coaxially placed with the connecting plate (5); The upper ends of the slide rails (2) are all fixed with mounting seats (8), the upper ends of the screw rods (3) are all extended out of the slide rails (2) and are rotatably connected to the mounting seats (8), the upper ends of the screw rods (3) are all fixedly sleeved with first gears (9), a first annular synchronous toothed belt (10) is sleeved between the two first gears (9), a rotating motor (11) is fixed on any mounting seat (8), and the output end of the rotating motor (11) is connected to the upper end of the corresponding side screw rod (3).

2. The slit adjustment device according to claim 1, characterized in that: The lower end surface of the mounting plate (6) is provided with strip grooves (61) near both ends, the two strip grooves (61) correspond to the two screw rods (3) one by one, the strip grooves (61) are placed vertically with the connecting plate (5), and the mounting plate (6) is provided with two adjustment units corresponding to the two strip grooves (61) one by one; The adjustment units all include a rotating shaft (12) vertically placed on the connecting plate (5), the central axis of the rotating shaft (12) is located in the symmetry plane of the two die heads (7), the lower end of the rotating shaft (12) extends into the strip groove (61), and the rotating shaft (12) is rotatably connected to the connecting plate (5), the lower end of the rotating shaft (12) is fixedly sleeved with a second gear (121) rotatable in the strip groove (61), the second gear (121) is meshed with a pair of racks (122) centrally symmetrically placed about the central axis of the rotating shaft (12), the racks (122) are coaxially placed with the strip groove (61), the two racks (122) correspond to the two die heads (7) one by one, and any rack (122) is fixed to the corresponding die head (7).

3. The slit adjustment device according to claim 2, characterized in that: The sliders (4) are provided with round holes coaxially arranged with the screw rod (3), and sleeves (13) are rotatably connected in the round holes. The upper and lower ends of the sleeves (13) are open, and the sleeves (13) are threadedly sleeved on the screw rod (3). The upper and lower ends of the sleeves (13) are fixed with first limiting rings (14) coaxially arranged, and the screw rods (3) pass through the rings of the first limiting rings (14). The sliders (4) are located between the two corresponding first limiting rings (14), and the connecting plate (5) is provided with a pair of symmetrically arranged clamping units, the two clamping units correspond to the two sleeves (13) one by one, and the clamping units are detachably connected to the first limiting rings (14) at the upper ends of the corresponding sleeves (13).

4. The slit adjustment device according to claim 3, characterized in that: A toothed ring (15) is fixed on the upper end of the first limiting ring (14) above the sleeve (13), and the toothed ring (15) is coaxially arranged with the corresponding sleeve (13). The screw rod (3) is located inside the corresponding toothed ring (15). A third gear (16) is fixedly sleeved on the upper end of the rotating shaft (12), and a second annular synchronous toothed belt (17) is sleeved between the toothed ring (15) and the third gear (16) on the corresponding side.

5. The slit adjustment device according to claim 4, characterized in that: The clamping units all include a telescopic cylinder (18) fixed on the connecting plate (5), the output end of the telescopic cylinder (18) is horizontally oriented to the first limiting ring (14) at the upper end of the corresponding sleeve (13), and a clamping block (181) is fixed to the output end of the telescopic cylinder (18); A groove (141) adapted to the clamping block (181) is provided on the peripheral wall of the first limiting ring (14) at the upper end of the sleeve (13).

6. The slit adjustment device according to claim 5, characterized in that: A plurality of grooves (141) are provided on the peripheral wall of the first limiting ring (14) at the upper end of the sleeve (13), and the plurality of grooves (141) on the first limiting ring (14) are evenly distributed in a ring shape around the central axis of the corresponding sleeve (13).

7. The slit adjustment device according to claim 6, characterized in that: Second limiting rings (151) are fixed at both upper and lower ends of the gear ring (15); the second limiting rings (151) are coaxially arranged with the corresponding gear ring (15); the outer diameter of the second limiting ring (151) is larger than the outer diameter of the gear ring (15); third limiting rings (161) are fixed at both upper and lower ends of the third gear (16); the outer diameter of the third limiting ring (161) is larger than the outer diameter of the third gear (16).

8. The slit adjustment device according to claim 7, characterized in that: A coaxially arranged clamping strip (123) is fixed on each of the racks (122); a pair of slide grooves corresponding to the clamping strips (123) are provided on the side walls of the strip-shaped grooves (61); and the clamping strips (123) are slidably clamped in the corresponding slide grooves.

9. A detection feedback device for detecting the horizontality of the lower end of the die head (7) in the slit adjustment device according to any one of claims 1 to 8, characterized in that: The invention comprises a pair of symmetrically placed grating rulers (19), the grating rulers (19) correspond one to one with the screw rods (3), the two grating rulers (19) are respectively fixed to the two ends of the connecting plate (5), and a pair of symmetrically placed laser generators (191) are fixedly mounted on the supporting frame (1), the laser generators (191) correspond one to one with the grating rulers (19).

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