Automatic feeding device for paperboard printing and using method thereof

Abstract

The invention relates to the technical field of paperboard printing, in particular to an automatic feeding device for paperboard printing and a using method of the automatic feeding device, and solves the problems that during automatic feeding in the existing paperboard printing process, a conveying belt is usually adopted for feeding, then the conveying belt cannot keep continuous conveying of paperboards, and feeding interruption is likely to be caused. The automatic feeding device for paperboard printing comprises a conversion feeding mechanism, an automatic material conveying mechanism and a telescopic material shifting mechanism, the automatic material conveying mechanism is installed at the rear end of the conversion feeding mechanism, the telescopic material shifting mechanism is installed at the upper end of the automatic material conveying mechanism, a printing machine is installed at the rear end of the automatic material conveying mechanism, and the upper end of the automatic material conveying mechanism is provided with the telescopic material shifting mechanism. The conversion feeding mechanism comprises a guide supporting base. According to the paperboard feeding device, the trays on which paperboards are stacked are slidably adjusted and replaced, so that continuous feeding of the paperboards is conveniently met, corresponding adjustment is conveniently carried out according to the thicknesses of the paperboards, and then the stability of paperboard conveying is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of cardboard printing, and in particular to an automatic feeding device for cardboard printing and a use method thereof. Background Art

[0002] Cardboard printing is a printing device that can print the required text, patterns and other information on the surface of cardboard. It generally includes process flows such as plate mounting, inking, embossing, and paper feeding. Cardboard printing generally includes single printing, printing slotting and die-cutting, printing slotting and die-cutting, box gluing and linkage production lines, etc. By automatically loading cardboard during printing, the efficiency of carton printing can be significantly improved, the tediousness and errors of manual operation can be reduced, and fast and accurate loading of cardboard can be achieved.

[0003] In the existing process of automatic feeding of cardboard printing, a conveyor belt is usually used for feeding, but the conveyor belt cannot maintain continuous conveyance of the cardboard, which easily causes interruption of feeding; therefore, it does not meet the existing needs. In this regard, we propose an automatic feeding device for cardboard printing and a method of using the same. Summary of the invention

[0004] The object of the present invention is to provide an automatic feeding device for cardboard printing and a method of using the same, so as to solve the problem in the above-mentioned background technology that in the existing automatic feeding process of cardboard printing, a conveyor belt is usually used for feeding, and then the conveyor belt cannot maintain continuous feeding of the cardboard, which easily causes interruption of feeding.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic feeding device for cardboard printing, comprising a conversion feeding mechanism, an automatic feeding mechanism and a telescopic feeding mechanism, the rear end of the conversion feeding mechanism is equipped with an automatic feeding mechanism, the upper end of the automatic feeding mechanism is equipped with a telescopic feeding mechanism, the rear end of the automatic feeding mechanism is equipped with a printing press, the conversion feeding mechanism comprises a guide support base, the upper end surface of the guide support base is fixedly equipped with two guide rails, the upper end surfaces of the two guide rails are slidably connected with a sliding plate, the upper end surface of the sliding plate is equipped with two material placement opening boxes, the inner side of the material placement opening box is equipped with a cardboard stacking tray, and the rear end surface of the material placement opening box is slidably connected with a limited stopper;

[0006] The automatic feeding mechanism comprises a printing support seat, the front end of which is fixedly connected to the guide support base, the upper end surface of which is fixedly mounted with a first transmission frame, both sides of which are mounted with height adjustment components, and the upper ends of the two height adjustment components are mounted with a connecting cross frame;

[0007] The telescopic material-selecting mechanism comprises a sliding guide frame, which is fixedly connected to the middle part of the connecting cross frame, a plurality of connecting vertical plates are slidably connected to the inner side of the front end of the sliding guide frame, a third transmission frame is fixedly installed at the bottom ends of the plurality of connecting vertical plates, and a third transmission belt is rotatably connected to the inner side of the third transmission frame.

[0008] Preferably, the conversion feeding mechanism also includes a first transmission motor fixedly connected to one end of the guide support base, a second transmission screw is installed on the inner side of the bottom end of the sliding plate, and a guide support frame is slidably connected to the outer sides of the two material placement opening boxes, and two second transmission motors are fixedly installed on the upper end surface of the guide support frame, and the output end of the second transmission motor passes through the guide support frame and is connected to the first transmission screw through a coupling.

[0009] Preferably, the automatic feeding mechanism also includes a third transmission motor fixedly connected to one side of the rear end of the first transmission frame, the first transmission frame is rotatably connected to the inner side of the first transmission frame, the upper end surface of the printing support seat is located on both sides of the first transmission frame and a plurality of guide columns are fixedly installed, a protective cover is fixedly installed on the outer side of the connecting cross frame, two second transmission frames are installed between the connecting cross frame and the first transmission belt, one of the second transmission frames is fixedly installed with a fourth transmission motor on one side of the rear end, the second transmission frame is rotatably connected to the inner side of the second transmission frame, and a transmission shaft is rotatably connected between the two second transmission frames.

[0010] Preferably, the height adjustment assembly includes a supporting angle plate, the bottom end of the supporting angle plate is fixedly connected to the printing support seat, an adjustment handle is installed on the inner side of the upper end of the supporting angle plate, a transmission block is installed on the outer side of one end of the adjustment handle, a positioning waist-shaped groove is provided on the side of the transmission block close to the supporting angle plate, the inner side of the upper end of the transmission block is rotatably connected to the first transmission plate, and the inner side of the bottom end of the transmission block is rotatably connected to the second transmission plate.

[0011] Preferably, the telescopic material feeding mechanism also includes a sixth transmission motor fixedly connected to the rear end of the sliding guide frame, a third transmission screw is installed on the inner sides of the plurality of connecting vertical plates, a fifth transmission motor is fixedly installed on one side of the rear end of the third transmission frame, transmission rollers are provided on the inner sides of both ends of the first transmission belt, the two second transmission belts and the third transmission belt, the output end of the fifth transmission motor passes through the third transmission frame and is connected to the third transmission belt through transmission rollers, the rotation direction of the third transmission belt is clockwise, the output end of the sixth transmission motor passes through the sliding guide frame and is connected to the third transmission screw through a coupling, and the third transmission screw is threadedly connected to the plurality of connecting vertical plates.

[0012] Preferably, the output end of the fourth transmission motor passes through the second transmission frame and is connected to the second transmission belt through a transmission roller, both ends of the transmission shaft pass through the second transmission frame and are fixedly connected to two adjacent transmission rollers, the rotation direction of the two second transmission belts is clockwise, and the output end of the third transmission motor passes through the first transmission frame and is connected to the first transmission belt through a transmission roller.

[0013] Preferably, the rotation direction of the first conveyor belt is counterclockwise, a feeding gap is provided between the first conveyor belt and the third conveyor belt and the two second conveyor belts, the connecting cross frame is fixedly connected to the upper ends of the two second conveyor frames, and the two ends of the connecting cross frame are slidably connected to a plurality of guide columns.

[0014] Preferably, both ends of the connecting cross frame are rotatably connected to the upper ends of the two first transmission plates, both ends of the transmission block are rotatably connected to the first transmission plate and the second transmission plate through pins, the bottom end of the second transmission plate is rotatably connected to the supporting angle plate, one end of the adjusting handle passes through the supporting angle plate and is inserted into the inner side of the positioning waist-shaped groove, and the adjusting handle is threadedly connected to the upper end of the supporting angle plate.

[0015] Preferably, the guide support base is fixedly connected to the bottom ends of the two limit baffles, the sliding plate is slidably connected to the guide support base through two guide rails, the output end of the first transmission motor penetrates the guide support base and is connected to the second transmission screw through a coupling, the second transmission screw is threadedly connected to the middle part of the sliding plate, the bottom end of the first transmission screw penetrates the material loading opening box and is rotatably connected to the sliding plate, the first transmission screw is threadedly connected to the upper end of the material loading opening box, the four end corners of the two material loading opening boxes are slidably connected to the guide support frame, and the material loading opening box and the cardboard stacking tray slide linearly back and forth along the axis of the first transmission screw.

[0016] A method for using an automatic feeding device for cardboard printing comprises the following steps:

[0017] S1: When printing cardboards by using a printing press, a cardboard stacking tray with stacked cardboards is placed on the inner side of a material placement opening box by using engineering equipment, the power is turned on, and one of the second transmission motors is started, so that the second transmission motor drives one of the material placement opening boxes to move upward through the first transmission screw under the support of the guide support frame, and then the material placement opening box drives the cardboards to move upward through the cardboard stacking tray, and simultaneously starts the third transmission motor, the fourth transmission motor and the fifth transmission motor, so that the third transmission motor drives the first transmission belt to rotate counterclockwise through the transmission roller, the fourth transmission motor drives the two second transmission belts to rotate clockwise through the transmission roller and the transmission shaft, and the fifth transmission motor drives the third transmission belt to rotate clockwise on the inner side of the third transmission frame through the transmission roller, so that the cardboards can be gradually moved upward while the third transmission belt can move and separate the stacked cardboards one by one, so as to facilitate the cardboards to be transported to the first transmission belt;

[0018] S2: Then, the two second conveyor belts and the first conveyor belt can clamp and convey the two ends of the cardboard, thereby effectively improving the cardboard conveying stability, preventing the cardboard from deflecting relative to the conveying direction, and improving the feeding quality of the cardboard. The cardboard on the cardboard stacking tray can be limited by the limiting baffle, thereby preventing the cardboard from deflecting when not loaded, causing the cardboard to be stuck with the material placement opening box when loading, and the upper end of the limiting baffle can be used to position the cardboard loading, so as to realize the one-by-one loading operation of the cardboard;

[0019] S3: After the loading of cardboards on one of the cardboard stacking trays is completed, one of the material placement opening boxes is reset, and the sixth transmission motor and the first transmission motor are started, so that the sixth transmission motor drives the third transmission frame to slide backward through the third transmission screw and a plurality of connecting vertical plates under the support of the sliding guide frame, and at the same time, the first transmission motor drives the sliding plate to slide horizontally through the second transmission screw under the support of the guide support base, so that the positions of the two material placement opening boxes can be changed;

[0020] S4: by replacing the cardboard stacking tray in one of the material loading open boxes and adjusting the other material loading open box upward, the other material loading open box can be continuously fed with cardboard through the cardboard stacking tray to avoid interruption of cardboard feeding. After the positions of the two material loading open boxes are adjusted, the third conveying frame is reset to facilitate the third conveying frame to continuously feed cardboard through the third conveyor belt.

[0021] S5: A feeding gap is provided between the first conveyor belt and the third conveyor belt and the two second conveyor belts. The adjusting handle is rotated so that the adjusting handle can be axially adjusted under the support of the supporting angle plate, and then the connecting cross frame applies pressure to the transmission block through the first transmission plate, so that the transmission block can be positionally adjusted along the axis of the adjusting handle, so that the transmission block drives the first transmission plate and the second transmission plate to swing synchronously and the two first transmission plates can adjust the height of the connecting cross frame, so as to control the size of the feeding gap, so as to facilitate the conveying of cardboards of different thicknesses and adjust the contact tightness between the third conveyor belt and the cardboard, so as to avoid unstable feeding spacing between adjacent cardboards when the third conveyor belt and the cardboard slide.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention places a cardboard stacking tray with stacked cardboards on the inner side of a material placement opening box, turns on the power, drives one of the material placement opening boxes to move upward through the first transmission screw, and while the cardboards are gradually moved upward, the stacked cardboards can be moved and separated one by one through the third conveyor belt, thereby facilitating the conveying of the cardboards to the first conveyor belt, and then the two second conveyor belts and the first conveyor belt can clamp and convey the two ends of the cardboards, thereby effectively improving the conveying stability of the cardboards, avoiding the deflection of the cardboards relative to the conveying direction, and improving the feeding quality of the cardboards;

[0024] 2. The present invention can limit the cardboard on the cardboard stacking tray through the limiting baffle, thereby preventing the cardboard from deviating when not loaded, causing the cardboard to be stuck with the material loading open box when loading, and the cardboard loading can be positioned through the upper end of the limiting baffle, so that the cardboard loading operation is realized one by one. The first transmission motor drives the sliding plate to slide horizontally through the second transmission screw, so that the positions of the two material loading open boxes can be replaced, and the cardboard stacking tray in one of the material loading open boxes is replaced and the other material loading open box is adjusted upward, so that the other material loading open box can be continuously fed with cardboard through the cardboard stacking tray, thereby avoiding interruption of cardboard feeding;

[0025] 3. The present invention provides a feeding gap between the first conveyor belt and the third conveyor belt and the two second conveyor belts, and the adjusting handle is rotated to perform axial adjustment, and then the connecting cross frame applies pressure to the transmission block through the first transmission plate to realize the position adjustment of the transmission block along the axis of the adjusting handle, so that the transmission block drives the first transmission plate and the second transmission plate to swing synchronously and realizes the two first transmission plates to adjust the height of the connecting cross frame, and then the size of the feeding gap can be controlled, so as to facilitate the conveying of cardboards of different thicknesses and adjust the contact tightness between the third conveyor belt and the cardboard, so as to avoid the unstable feeding spacing between adjacent cardboards caused by the sliding of the third conveyor belt and the cardboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 A side view of the present invention as a whole;

[0028] Figure 3 It is a structural schematic diagram of the conversion feeding mechanism of the present invention;

[0029] Figure 4 It is a rear side view of the conversion feeding mechanism of the present invention;

[0030] Figure 5 This is a schematic diagram of the installation structure of the connecting cross frame of the present invention;

[0031] Figure 6 It is a top view of the telescopic material-diverting mechanism of the present invention;

[0032] Figure 7 It is a schematic cross-sectional structure diagram of the telescopic material-diverting mechanism of the present invention;

[0033] Figure 8 It is a schematic cross-sectional structure diagram of the automatic feeding mechanism of the present invention;

[0034] Fig. 9 It is a schematic diagram of the exploded structure of the height adjustment assembly of the present invention.

[0035] In the figure: 1. Feeding mechanism for conversion; 101. Guide support base; 102. First transmission motor; 103. Sliding plate; 104. Stop plate; 105. Opening box for placing materials; 106. Guide support frame; 107. Second transmission motor; 108. Paperboard stacking tray; 109. First transmission screw; 110. Guide rail; 111. Second transmission screw; 2. Printing machine; 3. Automatic feeding mechanism; 301. Printing support seat; 302. First transmission frame; 303. Protective cover; 304. Third transmission motor; 305. Guide column; 306. First transmission belt; 307. 07. Second transmission rack; 308. Second transmission belt; 309. Transmission shaft; 310. Fourth transmission motor; 311. Connecting cross frame; 312. Height adjustment assembly; 320. First transmission plate; 321. Second transmission plate; 322. Support angle plate; 323. Adjustment handle; 324. Transmission block; 325. Positioning waist groove; 4. Telescopic material feeding mechanism; 401. Third transmission rack; 402. Sliding guide frame; 403. Fifth transmission motor; 404. Sixth transmission motor; 405. Third transmission screw; 406. Connecting vertical plate; 407. Third transmission belt. DETAILED DESCRIPTION

[0036] 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 the embodiments.

[0037] The first transmission motor 102 (model YS7134), the second transmission motor 107 (model YEJ3-112M-4), the third transmission motor 304 (model MDSKSRS080), the fourth transmission motor 310 (model GV50-3.7KW-60-S), the fifth transmission motor 403 (model GV50-3.7KW-60-S) and the sixth transmission motor 404 (model KOM7080) mentioned in the present invention can all be purchased from the market or obtained through private customization.

[0038] See also Figures 1 to 4 The present invention provides an embodiment: an automatic feeding device for cardboard printing, comprising a conversion feeding mechanism 1, an automatic feeding mechanism 3 and a telescopic feeding mechanism 4, the conversion feeding mechanism 1 comprises a guide support base 101, the upper end surface of the guide support base 101 is fixedly installed with two guide rails 110, the upper end surfaces of the two guide rails 110 are slidably connected with a sliding plate 103, the sliding plate 103 is slidably connected to the guide support base 101 through the two guide rails 110, the upper end surface of the sliding plate 103 is installed with two material placement opening boxes 105, the placement A cardboard stacking tray 108 is installed on the inner side of the material opening box 105, and the rear end surface of the material opening box 105 is slidably connected to the limiting baffle 104. The guide support base 101 is fixedly connected to the bottom ends of the two limiting baffles 104. The limiting baffles 104 can limit the cardboard on the cardboard stacking tray 108, thereby preventing the cardboard from shifting when the material is not loaded, causing the cardboard to be stuck with the material opening box 105 when the material is loaded, and the upper end of the limiting baffle 104 can be used to position the cardboard loading, so as to realize the loading operation of the cardboards one by one;

[0039] A first transmission motor 102 is fixedly installed at one end of the guide support base 101, and a second transmission screw 111 is installed on the inner side of the bottom end of the sliding plate 103. The output end of the first transmission motor 102 passes through the guide support base 101 and is connected to the second transmission screw 111 through a coupling. The second transmission screw 111 is connected to the middle of the sliding plate 103 through a thread. The first transmission motor 102 drives the sliding plate 103 to slide horizontally through the second transmission screw 111, so that the positions of the two material opening boxes 105 can be changed.

[0040] A guide support frame 106 is slidably connected to the outer sides of the two material loading opening boxes 105, and the four end corners of the two material loading opening boxes 105 are slidably connected to the guide support frame 106. Two second transmission motors 107 are fixedly installed on the upper end surface of the guide support frame 106. The output end of the second transmission motor 107 penetrates the guide support frame 106 and is connected to the first transmission screw 109 through a coupling. The bottom end of the first transmission screw 109 penetrates the material loading opening box 105 and is rotatably connected to the sliding plate 103. The first transmission screw 109 is threadedly connected to the upper end of the material loading opening box 105. The material loading opening box 105 and the cardboard stacking tray 108 slide linearly back and forth along the axis of the first transmission screw 109, so that the second transmission motor 107 drives the material loading opening box 105 to move up through the first transmission screw 109, and then the material loading opening box 105 drives the cardboard to move up through the cardboard stacking tray 108.

[0041] See also Figures 1 to 8 , an automatic feeding mechanism 3 is installed at the rear end of the conversion feeding mechanism 1, and a printing machine 2 is installed at the rear end of the automatic feeding mechanism 3. The automatic feeding mechanism 3 includes a printing support seat 301, and the front end of the printing support seat 301 is fixedly connected to the guide support base 101. A first transmission frame 302 is fixedly installed on the upper end surface of the printing support seat 301, and a connecting cross frame 311 is installed on the upper ends of the two height adjustment components 312. A third transmission motor 304 is fixedly installed on one side of the rear end of the first transmission frame 302, and the inner side of the first transmission frame 302 is rotatably connected to the first transmission belt 306. The output end of the third transmission motor 304 passes through the first transmission frame 302 and is connected to the first transmission belt 306 through a transmission roller. The rotation direction of the first transmission belt 306 is counterclockwise, so that the third transmission motor 304 can support and transmit the cardboard when driving the first transmission belt 306 to rotate through the transmission roller;

[0042] The upper end surface of the printing support seat 301 is located on both sides of the first transmission frame 302, and multiple guide pillars 305 are fixedly installed. The two ends of the connecting cross frame 311 are slidably connected to the multiple guide pillars 305. A protective cover 303 is fixedly installed on the outer side of the connecting cross frame 311. Two second transmission frames 307 are installed between the connecting cross frame 311 and the first transmission belt 306. The connecting cross frame 311 is fixedly connected to the upper ends of the two second transmission frames 307. The connecting cross frame 311 is convenient for supporting the telescopic material-dispensing mechanism 4 to maintain the stability of the telescopic adjustment of the telescopic material-dispensing mechanism 4.

[0043] A fourth transmission motor 310 is fixedly installed on one side of the rear end of one of the second transmission frames 307, and a second transmission belt 308 is rotatably connected to the inner side of the second transmission frame 307. A transmission shaft 309 is rotatably connected between the two second transmission frames 307. The output end of the fourth transmission motor 310 passes through the second transmission frame 307 and is connected to the second transmission belt 308 through a transmission roller. Both ends of the transmission shaft 309 pass through the second transmission frame 307 and are fixedly connected to two adjacent transmission rollers. The rotation directions of the two second transmission belts 308 are both clockwise. The two ends of the cardboard can be clamped and conveyed by the two second transmission belts 308 and the first transmission belt 306, thereby effectively improving the stability of cardboard conveying, avoiding the deflection of the cardboard relative to the transmission direction, and improving the feeding quality of the cardboard.

[0044] See also Figure 5 , Figure 8 and Fig. 9 , height adjustment components 312 are installed on both sides of the first transmission frame 302, and the height adjustment components 312 include a supporting angle plate 322, the bottom end of the supporting angle plate 322 is fixedly connected to the printing support seat 301, an adjustment handle 323 is installed on the inner side of the upper end of the supporting angle plate 322, and a transmission block 324 is installed on the outer side of one end of the adjustment handle 323, and a positioning waist-shaped groove 325 is provided on the side of the transmission block 324 close to the supporting angle plate 322, one end of the adjustment handle 323 passes through the supporting angle plate 322 and is plugged into the inner side of the positioning waist-shaped groove 325, and the adjustment handle 323 is threadedly connected to the upper end of the supporting angle plate 322, and the adjustment handle 323 is rotated so that the adjustment handle 323 can be axially adjusted under the support of the supporting angle plate 322;

[0045] The inner side of the upper end of the transmission block 324 is rotatably connected to the first transmission plate 320, and the two ends of the connecting cross frame 311 are rotatably connected to the upper ends of the two first transmission plates 320. The inner side of the bottom end of the transmission block 324 is rotatably connected to the second transmission plate 321. The two ends of the transmission block 324 are rotatably connected to the first transmission plate 320 and the second transmission plate 321 through pins, and the bottom end of the second transmission plate 321 is rotatably connected to the supporting angle plate 322, so that when the adjusting handle 323 rotates, the transmission block 324 drives the first transmission plate 320 and the second transmission plate 321 to swing synchronously and realize the two first transmission plates 320 to adjust the height of the connecting cross frame 311, thereby being able to control the size of the feeding gap.

[0046] See also Figures 5 to 7, a telescopic material-diverting mechanism 4 is installed at the upper end of the automatic feeding mechanism 3, and the telescopic material-diverting mechanism 4 includes a sliding guide frame 402, and the sliding guide frame 402 is fixedly connected to the middle part of the connecting horizontal frame 311, and the inner side of the front end of the sliding guide frame 402 is slidably connected to a plurality of connecting vertical plates 406, and a third transmission frame 401 is fixedly installed at the bottom end of the plurality of connecting vertical plates 406, and the inner side of the third transmission frame 401 is rotatably connected to a third transmission belt 407, and a fifth transmission motor 403 is fixedly installed on one side of the rear end of the third transmission frame 401, and the output end of the fifth transmission motor 403 passes through the third transmission frame 401 and is connected to the third transmission belt 407 through a transmission roller, and the rotation direction of the third transmission belt 407 is clockwise, and the cardboards in the superimposed state can be moved and separated one by one through the third transmission belt 407, so as to facilitate the cardboards to be transported to the first transmission belt 306;

[0047] A sixth transmission motor 404 is fixedly installed at the rear end of the sliding guide frame 402, and a third transmission screw 405 is installed on the inner side of multiple connecting vertical plates 406. The output end of the sixth transmission motor 404 passes through the sliding guide frame 402 and is connected to the third transmission screw 405 through a coupling. The third transmission screw 405 is connected to multiple connecting vertical plates 406 through threads. Transmission rollers are provided on the inner sides of both ends of the first conveyor belt 306, the two second conveyor belts 308 and the third conveyor belt 407. A feeding gap is provided between the first conveyor belt 306 and the third conveyor belt 407 and the two second conveyor belts 308. The size of the feeding gap is controlled to facilitate the conveying of cardboards of different thicknesses and the adjustment of the contact tightness between the third conveyor belt 407 and the cardboard, so as to avoid unstable feeding spacing between adjacent cardboards when the third conveyor belt 407 slides with the cardboard.

[0048] A method for using an automatic feeding device for cardboard printing comprises the following steps:

[0049] S1: When printing paperboards by using the printing machine 2, the paperboard stacking tray 108 with the paperboards stacked thereon is placed inside the material loading opening box 105 by using engineering equipment, the power is turned on, and one of the second transmission motors 107 is started, so that the second transmission motor 107 drives one of the material loading opening boxes 105 to move upward through the first transmission screw 109 under the support of the guide support frame 106, and then the material loading opening box 105 drives the paperboards to move upward through the paperboard stacking tray 108, and simultaneously starts the third transmission motor 304, the fourth transmission motor 310 and the fifth transmission motor 311. The motor 403 is driven, so that the third transmission motor 304 drives the first conveyor belt 306 to rotate counterclockwise through the transmission roller, the fourth transmission motor 310 drives the two second conveyor belts 308 to rotate clockwise through the transmission roller and the transmission shaft 309, and the fifth transmission motor 403 drives the third conveyor belt 407 to rotate clockwise on the inner side of the third conveyor frame 401 through the transmission roller, so that the cardboards can be moved and separated one by one through the third conveyor belt 407 while the cardboards are gradually moved up, so as to facilitate the conveyance of the cardboards to the first conveyor belt 306;

[0050] S2: Then, the two second conveyor belts 308 and the first conveyor belt 306 can clamp and convey the two ends of the cardboard, thereby effectively improving the cardboard conveying stability, preventing the cardboard from deflecting relative to the conveying direction, and improving the feeding quality of the cardboard. The cardboard on the cardboard stacking tray 108 can be limited by the limiting baffle 104, thereby preventing the cardboard from deflecting when not loaded, causing the cardboard to be stuck with the material placement opening box 105 when loading, and the upper end of the limiting baffle 104 can be used to position the cardboard loading, so as to realize the one-by-one loading operation of the cardboard;

[0051] S3: After the loading of cardboards on one of the cardboard stacking trays 108 is completed, one of the material placement opening boxes 105 is reset, and the sixth transmission motor 404 and the first transmission motor 102 are started, so that the sixth transmission motor 404 drives the third transmission frame 401 to slide backward through the third transmission screw 405 and a plurality of connecting vertical plates 406 under the support of the sliding guide frame 402, and at the same time, the first transmission motor 102 drives the sliding plate 103 to slide horizontally through the second transmission screw 111 under the support of the guide support base 101, so that the positions of the two material placement opening boxes 105 can be replaced;

[0052] S4: by replacing the cardboard stacking tray 108 in one of the material loading opening boxes 105 and adjusting the other material loading opening box 105 upward, it is convenient for the other material loading opening box 105 to continuously feed cardboard through the cardboard stacking tray 108, thereby avoiding interruption of cardboard feeding. After the positions of the two material loading opening boxes 105 are adjusted, the third transmission frame 401 is reset, thereby facilitating the third transmission frame 401 to continuously feed cardboard through the third transmission belt 407;

[0053] S5: A feeding gap is provided between the first conveyor belt 306 and the third conveyor belt 407 and the two second conveyor belts 308. By rotating the adjusting handle 323, the adjusting handle 323 is axially adjusted under the support of the supporting angle plate 322, and then the connecting cross frame 311 exerts pressure on the transmission block 324 through the first transmission plate 320, so that the transmission block 324 is adjusted along the axis of the adjusting handle 323, so that the transmission block 324 drives the first transmission plate 320 and the second transmission plate 321 to swing synchronously and the two first transmission plates 320 adjust the height of the connecting cross frame 311, so that the size of the feeding gap can be controlled, so as to facilitate the conveying of cardboards of different thicknesses and adjust the contact tightness between the third conveyor belt 407 and the cardboard, so as to avoid the unstable feeding spacing between adjacent cardboards when the third conveyor belt 407 and the cardboard slide.

[0054] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An automatic feeding device for cardboard printing, comprising a switching feeding mechanism (1), an automatic feeding mechanism (3) and a telescopic feeding mechanism (4), characterized in that: The rear end of the conversion feeding mechanism (1) is equipped with an automatic feeding mechanism (3), the upper end of the automatic feeding mechanism (3) is equipped with a telescopic material feeding mechanism (4), and the rear end of the automatic feeding mechanism (3) is equipped with a printing machine (2). The conversion feeding mechanism (1) comprises a guide support base (101), the upper end surface of the guide support base (101) is fixedly equipped with two guide rails (110), the upper end surfaces of the two guide rails (110) are slidably connected to a sliding plate (103), the upper end surface of the sliding plate (103) is equipped with two material placement opening boxes (105), the inner side of the material placement opening box (105) is equipped with a cardboard stacking tray (108), and the rear end surface of the material placement opening box (105) is slidably connected to a limit stopper (104); The automatic feeding mechanism (3) comprises a printing support seat (301), the front end of the printing support seat (301) is fixedly connected to the guide support base (101), the upper end surface of the printing support seat (301) is fixedly mounted with a first transmission frame (302), both sides of the first transmission frame (302) are mounted with height adjustment components (312), and the upper ends of the two height adjustment components (312) are mounted with a connecting cross frame (311); The telescopic material-selecting mechanism (4) comprises a sliding guide frame (402), wherein the sliding guide frame (402) is fixedly connected to the middle part of the connecting cross frame (311), a plurality of connecting vertical plates (406) are slidably connected to the inner side of the front end of the sliding guide frame (402), a third transmission frame (401) is fixedly installed at the bottom ends of the plurality of connecting vertical plates (406), and a third transmission belt (407) is rotatably connected to the inner side of the third transmission frame (401).

2. The automatic feeding device for cardboard printing according to claim 1, characterized in that: The conversion feeding mechanism (1) also includes a first transmission motor (102) fixedly connected to one end of the guide support base (101); a second transmission screw (111) is installed on the inner side of the bottom end of the sliding plate (103); a guide support frame (106) is slidably connected to the outer sides of the two material placement opening boxes (105); two second transmission motors (107) are fixedly installed on the upper end surface of the guide support frame (106); the output end of the second transmission motor (107) passes through the guide support frame (106) and is connected to the first transmission screw (109) through a coupling.

3. The automatic feeding device for cardboard printing according to claim 2, characterized in that: The automatic feeding mechanism (3) also includes a third transmission motor (304) fixedly connected to one side of the rear end of the first transmission frame (302); the first transmission frame (302) is rotatably connected to the inner side of the first transmission frame (302); the upper end surface of the printing support seat (301) is located on both sides of the first transmission frame (302) and is fixedly installed with a plurality of guide columns (305); the outer side of the connecting cross frame (311) is fixedly installed with a protective cover (303); two second transmission frames (307) are installed between the connecting cross frame (311) and the first transmission belt (306); a fourth transmission motor (310) is fixedly installed on one side of the rear end of one of the second transmission frames (307); the inner side of the second transmission frame (307) is rotatably connected to the second transmission belt (308); and a transmission shaft (309) is rotatably connected between the two second transmission frames (307).

4. The automatic feeding device for cardboard printing according to claim 3, characterized in that: The height adjustment assembly (312) comprises a supporting angle plate (322), the bottom end of the supporting angle plate (322) is fixedly connected to the printing support seat (301), an adjustment handle (323) is installed on the inner side of the upper end of the supporting angle plate (322), a transmission block (324) is installed on the outer side of one end of the adjustment handle (323), a positioning waist-shaped groove (325) is provided on the side of the transmission block (324) close to the supporting angle plate (322), the inner side of the upper end of the transmission block (324) is rotatably connected to the first transmission plate (320), and the inner side of the bottom end of the transmission block (324) is rotatably connected to the second transmission plate (321).

5. The automatic feeding device for cardboard printing according to claim 4, characterized in that: The telescopic material-dispensing mechanism (4) further comprises a sixth transmission motor (404) fixedly connected to the rear end of the sliding guide frame (402); a third transmission screw (405) is installed on the inner side of the plurality of connecting vertical plates (406); a fifth transmission motor (403) is fixedly installed on one side of the rear end of the third transmission frame (401); transmission rollers are provided on the inner sides of both ends of the first transmission belt (306), the two second transmission belts (308) and the third transmission belt (407); an output end of the fifth transmission motor (403) passes through the third transmission frame (401) and is connected to the third transmission belt (407) via a transmission roller; the rotation direction of the third transmission belt (407) is clockwise; an output end of the sixth transmission motor (404) passes through the sliding guide frame (402) and is connected to the third transmission screw (405) via a coupling; and the third transmission screw (405) is connected to the plurality of connecting vertical plates (406) via threads.

6. The automatic feeding device for cardboard printing according to claim 5, characterized in that: The output end of the fourth transmission motor (310) passes through the second transmission frame (307) and is connected to the second transmission belt (308) through a transmission roller. Both ends of the transmission shaft (309) pass through the second transmission frame (307) and are fixedly connected to two adjacent transmission rollers. The rotation directions of the two second transmission belts (308) are both clockwise. The output end of the third transmission motor (304) passes through the first transmission frame (302) and is connected to the first transmission belt (306) through a transmission roller.

7. The automatic feeding device for cardboard printing according to claim 6, characterized in that: The rotation direction of the first conveyor belt (306) is counterclockwise, and a feeding gap is provided between the first conveyor belt (306) and the third conveyor belt (407) and the two second conveyor belts (308). The connecting cross frame (311) is fixedly connected to the upper ends of the two second conveyor frames (307), and the two ends of the connecting cross frame (311) are slidably connected to a plurality of guide columns (305).

8. The automatic feeding device for cardboard printing according to claim 7, characterized in that: Both ends of the connecting cross frame (311) are rotatably connected to the upper ends of the two first transmission plates (320), both ends of the transmission block (324) are rotatably connected to the first transmission plate (320) and the second transmission plate (321) through pins, the bottom end of the second transmission plate (321) is rotatably connected to the supporting angle plate (322), one end of the adjusting handle (323) passes through the supporting angle plate (322) and is plugged into the inner side of the positioning waist groove (325), and the adjusting handle (323) is connected to the upper end of the supporting angle plate (322) through threads.

9. The automatic feeding device for cardboard printing according to claim 8, characterized in that: The guide support base (101) is fixedly connected to the bottom ends of the two limit baffles (104); the sliding plate (103) is slidably connected to the guide support base (101) via two guide rails (110); the output end of the first transmission motor (102) passes through the guide support base (101) and is connected to the second transmission screw (111) via a coupling; the second transmission screw (111) is threadedly connected to the middle of the sliding plate (103); the bottom end of the first transmission screw (109) passes through the material placement opening box (105) and is rotatably connected to the sliding plate (103); the first transmission screw (109) is threadedly connected to the upper end of the material placement opening box (105); the four end corners of the two material placement opening boxes (105) are slidably connected to the guide support frame (106); the material placement opening box (105) and the cardboard stacking tray (108) slide linearly back and forth along the axis of the first transmission screw (109).

10. A method for using the automatic feeding device for cardboard printing according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: When printing paperboards using a printing press (2), a paperboard stacking tray (108) stacked with paperboards is placed inside a material placement opening box (105) using engineering equipment, a power source is turned on, and one of the second transmission motors (107) is started, so that the second transmission motor (107) drives one of the material placement opening boxes (105) to move upward through the first transmission screw (109) under the support of the guide support frame (106), and then the material placement opening box (105) drives the paperboards to move upward through the paperboard stacking tray (108), and simultaneously starts the third transmission motor (304), the fourth transmission motor (310) and the fifth transmission motor (311). The transmission motor (403) drives the third transmission motor (304) to drive the first transmission belt (306) to rotate counterclockwise through the transmission roller, the fourth transmission motor (310) drives the two second transmission belts (308) to rotate clockwise through the transmission roller and the transmission shaft (309), and the fifth transmission motor (403) drives the third transmission belt (407) to rotate clockwise on the inner side of the third transmission frame (401) through the transmission roller, so that the cardboards can be moved and separated one by one through the third transmission belt (407) while the cardboards are gradually moved upward, so that the cardboards can be transported to the first transmission belt (306) conveniently; S2: Then, the two second conveyor belts (308) and the first conveyor belt (306) can be used to clamp and convey the two ends of the cardboard, thereby effectively improving the cardboard conveying stability, preventing the cardboard from deflecting relative to the conveying direction, and improving the feeding quality of the cardboard. The cardboard on the cardboard stacking tray (108) can be limited by the limiting baffle (104), thereby preventing the cardboard from deflecting when not loaded, causing the cardboard to be stuck with the material placement opening box (105) when loading, and the upper end of the limiting baffle (104) can be used to position the cardboard loading, thereby realizing the one-by-one loading operation of the cardboard; S3: after loading of cardboard onto one of the cardboard stacking trays (108) is completed, one of the material placement opening boxes (105) is reset, and the sixth transmission motor (404) and the first transmission motor (102) are started, so that the sixth transmission motor (404) drives the third transmission frame (401) to slide backwards through the third transmission screw (405) and a plurality of connecting vertical plates (406) under the support of the sliding guide frame (402), and at the same time, the first transmission motor (102) drives the sliding plate (103) to slide horizontally through the second transmission screw (111) under the support of the guide support base (101), so that the positions of the two material placement opening boxes (105) can be replaced; S4: by replacing the cardboard stacking tray (108) in one of the material loading opening boxes (105) and adjusting the other material loading opening box (105) upward, the other material loading opening box (105) is facilitated to continuously feed cardboard through the cardboard stacking tray (108), thereby avoiding interruption of cardboard feeding, and after adjusting the positions of the two material loading opening boxes (105), the third conveying frame (401) is reset, thereby facilitating the third conveying frame (401) to continuously feed cardboard through the third conveying belt (407); S5: A feeding gap is provided between the first conveyor belt (306), the third conveyor belt (407) and the two second conveyor belts (308). By rotating the adjusting handle (323), the adjusting handle (323) is axially adjusted under the support of the supporting angle plate (322), and then the connecting cross frame (311) applies pressure to the transmission block (324) through the first transmission plate (320), so that the transmission block (324) is adjusted along the axis of the adjusting handle (323), so that the transmission block (324) drives the first transmission plate (320) and the second transmission plate (321) to swing synchronously and the two first transmission plates (320) adjust the height of the connecting cross frame (311), so that the size of the feeding gap can be controlled, so as to facilitate the conveying of cardboards of different thicknesses and adjust the contact tightness between the third conveyor belt (407) and the cardboard, so as to avoid the instability of the feeding spacing between adjacent cardboards caused by the sliding of the third conveyor belt (407) and the cardboard.

Images