Creasing device for paperboard processing

Abstract

The application discloses to paperboard processing technical field, concretely is a kind of paperboard processing is used creasing device, including processing table, the upper end of processing table is installed with the intermittent conveying mechanism of paperboard, the upper end of processing table is fixedly connected with concave plate, the upper end of concave plate equidistantly fixedly connected with three telescopic oil cylinders, the lower end of telescopic oil cylinder is fixedly connected with upper top plate through concave plate, the lower end of upper top plate is fixedly connected with L-shaped support plate, L-shaped support plate is installed with paperboard indentation mechanism, the recess is opened in the side of upper top plate, recess is fixedly connected with second electric telescopic rod in symmetry, the end of second electric telescopic rod inner rod is fixedly connected with L-shaped side plate, the beneficial effects of the present application are: through telescopic oil cylinder, upper top plate is driven to move downward, upper top plate drives L-shaped side plate and L-shaped support plate to move downward, make paperboard indentation mechanism, limiting mechanism, positioning mechanism and preheating mechanism move downward, wherein, when limiting baffle in limiting mechanism first contact with the upper end of processing table.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of paperboard processing, in particular to a creasing device for paperboard processing. BACKGROUND

[0002] Paperboard, also known as board paper, is usually made of various plant fibers as raw materials, and some non-plant fibers are also added. It is made on a paperboard machine. Some special paperboard also uses animal fibers such as wool or mineral fibers such as asbestos. The difference between paperboard and paper is usually determined by the basis weight and thickness. The functions of paperboard and paper are also different. The existing paperboard needs to be creased during processing. The existing paperboard creasing device cannot position the paperboard, which may cause deviation during creasing operation, affecting the creasing quality of the paperboard. Moreover, if the pressure is too small during creasing of the existing creasing device, the creasing will be shallow and cannot be used. If the pressure is too large, the paperboard will be broken, which not only causes waste of paperboard, but also greatly reduces the work efficiency. SUMMARY

[0003] The purpose of the present application is to provide a creasing device for paperboard processing to solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a creasing device for paperboard processing, comprising a processing table, an intermittent conveying mechanism of paperboard is installed at the upper end of the processing table, a concave plate is fixedly connected to the upper end of the processing table, three telescopic oil cylinders are fixedly connected to the upper end of the concave plate at equal intervals, the lower end of the telescopic oil cylinder is fixedly connected to the upper top plate through the concave plate, an L-shaped support plate is fixedly connected to the lower end of the upper top plate, a paperboard creasing mechanism is installed on the L-shaped support plate, a recess is formed on one side of the upper top plate, a second electric telescopic rod is fixedly connected in the recess in a symmetrical manner, an L-shaped side plate is fixedly connected to the end of the second electric telescopic rod, a limiting mechanism of paperboard is installed on the L-shaped side plate, a horizontal plate is fixedly connected to the side of the L-shaped side plate, a plurality of sleeves are fixedly connected to the upper end of the horizontal plate at equal intervals, a positioning mechanism of paperboard is installed at the lower end of the horizontal plate, and a preheating mechanism of paperboard is installed on the horizontal plate.

[0005] Preferably, the paperboard creasing mechanism comprises a plurality of first electric telescopic rods arranged on the L-shaped support plate, and a creasing knife arranged at the lower end of the first electric telescopic rod, the first electric telescopic rod is fixedly connected to the bottom of the inner side of the L-shaped support plate, and the lower end of the first electric telescopic rod is fixedly connected to the creasing knife through the L-shaped support plate.

[0006] Preferably, a limiting groove is symmetrically formed at the upper end of the side of the L-shaped side plate, the L-shaped side plate is slidably connected to the recess of the upper top plate, the limiting groove is slidably connected to the upper top plate, a sliding groove is formed in the inner side wall of the L-shaped side plate, and a through groove is formed in the side of the sliding groove.

[0007] Preferably, the limiting mechanism comprises a plurality of sliding rods arranged on the L-shaped side plate, a limiting baffle arranged on the inner side wall of the L-shaped side plate, two sliding plates arranged on the side of the limiting baffle, and a magnet strip arranged at the lower end of the limiting baffle, the sliding rods are arranged in the through groove, and the upper and lower ends of the sliding rods are fixedly connected with the upper and lower sides of the through groove, respectively, the sliding plates are sleeved on the sliding rods and are in sliding connection with the sliding rods.

[0008] Preferably, the limiting baffle is in sliding connection with the sliding groove on the inner side wall of the L-shaped side plate, and the magnet strip is embedded in the lower end of the limiting baffle.

[0009] Preferably, the positioning mechanism comprises a plurality of buffer light rods arranged on the horizontal plate, a limiting ring arranged at the upper end of the buffer light rods, a buffer spring sleeved at the lower end of the buffer light rods, and a positioning pressing plate arranged at the lower end of the buffer light rods, the buffer light rods penetrate the horizontal plate from top to bottom, the upper end of the buffer light rods is fixedly connected with the limiting ring through the sleeve, and the lower end of the buffer light rods is fixedly connected with the positioning pressing plate.

[0010] Preferably, the buffer light rods are in sliding connection with the horizontal plate and the sleeve, respectively, and the buffer spring is arranged between the horizontal plate and the positioning pressing plate.

[0011] Preferably, the preheating mechanism comprises a plurality of sleeves arranged on the horizontal plate, a fixed cover arranged at the lower end of the sleeve, a plug rod and a piston arranged in the sleeve, a first one-way valve and a second one-way valve arranged at the upper end of the sleeve, an air inlet branch pipe arranged on the first one-way valve, an air inlet main pipe arranged at the upper end of the air inlet branch pipe, an air inlet hose arranged at one end of the air inlet main pipe, an air outlet pipe arranged on the second one-way valve, and an air outlet head arranged at one end of the air outlet pipe, the sleeves penetrate the horizontal plate from top to bottom, the lower end of the sleeve is in an open arrangement, the sleeve is fixedly connected with the horizontal plate, the lower end of the sleeve is fixedly connected with the fixed cover, the upper end of the plug rod extends to the inner cavity of the sleeve through the fixed cover, the upper end of the plug rod is fixedly connected with the piston, the lower end of the plug rod is fixedly connected with the positioning pressing plate, and the piston is in sliding connection with the inner cavity of the sleeve.

[0012] Preferably, the first one-way valve and the second one-way valve are fixedly connected with the upper end of the sleeve, the lower end of the air inlet branch pipe is fixedly connected with the air inlet end of the first one-way valve, the upper end of the air inlet branch pipe is connected with the air inlet main pipe through a pipe joint, the air inlet main pipe is fixedly connected with the air inlet hose, one end of the air outlet pipe is fixedly connected with the air outlet end of the second one-way valve, the other end of the air outlet pipe is connected with the air outlet head through a pipe joint, the air outlet head is fixedly arranged on the side of the horizontal plate, and the air outlet opening of the air outlet head is arranged to be inclined downward.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] 1. The upper top plate is driven downward by the telescopic oil cylinder, the L-shaped side plate and the L-shaped support plate are driven downward by the upper top plate, the paperboard indentation mechanism, the limiting mechanism, the positioning mechanism and the preheating mechanism are driven downward, wherein the limiting baffle in the limiting mechanism first contacts the upper end of the processing table, at this time the inner rod of the telescopic oil cylinder stops extending, the intermittent conveying mechanism on the processing table drives the paperboard to move, so that one side of the paperboard contacts the side surface of the limiting baffle, thereby limiting the paperboard, at this time the intermittent conveying mechanism stops conveying the paperboard, the inner rod of the telescopic oil cylinder continues to extend downward, the positioning mechanism positions the paperboard, and the preheating mechanism preheats the paperboard, then the indentation cutter in the paperboard indentation mechanism performs indentation operation on the paperboard, the preheated paperboard has a certain ductility, thereby preventing the paperboard from being broken during indentation, and the positioning mechanism positions the paperboard, so that the indentation cutter accurately performs indentation operation on the paperboard;

[0015] 2. The indentation cutter is driven upward and downward by the inner rod of the first electric telescopic rod, so that the indentation cutter can perform indentation operation on paperboards of different thicknesses, the L-shaped side plate is driven to slide along the upper top plate by the inner rod of the second electric telescopic rod, the L-shaped side plate drives the limiting mechanism to move, thereby adjusting the distance between the limiting mechanism and the paperboard indentation mechanism, so that the paperboard indentation mechanism can perform indentation operation on different positions on the paperboard. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the paperboard processing creasing device of the present application;

[0017] Figure 2 It is a structure sectional view of the concave plate, the upper top plate and the L-shaped support plate of the present application;

[0018] Figure 3 It is a structure sectional view of the paperboard processing creasing device of the present application;

[0019] Figure 4 It is Figure 3 It is an enlarged schematic view of structure A in the present application;

[0020] Figure 5 It is an exploded view of the paperboard processing creasing device of the present application;

[0021] Figure 6 It is a partial rear three-dimensional view of the paperboard processing creasing device of the present application.

[0022] In the figure: 1, processing table; 11, concave plate; 12, telescopic oil cylinder; 13, upper top plate; 14, L-shaped support plate; 2, first electric telescopic rod; 21, indentation cutter; 3, second electric telescopic rod; 31, L-shaped side plate; 32, sliding rod; 33, limiting baffle; 34, sliding plate; 35, magnet strip; 4, cross plate; 41, sleeve; 5, buffer light pole; 51, limiting ring; 52, buffer spring; 53, positioning pressing plate; 6, sleeve; 61, fixed cover; 62, plug rod; 63, piston; 64, first check valve; 65, air inlet branch pipe; 66, air inlet main pipe; 67, air inlet hose; 7, air outlet head; 71, air outlet pipe; 72, second check valve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0024] Please refer to Figures 1 to 6 The present application provides a technical solution: a crease device for paperboard processing, which comprises a processing table 1, the upper end of the processing table 1 is provided with an intermittent conveying mechanism for paperboard, the upper end of the processing table 1 is fixedly connected with a concave plate 11, the upper end of the concave plate 11 is fixedly connected with three telescopic oil cylinders 12 at equal intervals, the lower end of the telescopic oil cylinder 12 is fixedly connected with an upper top plate 13 through the concave plate 11, the lower end of the upper top plate 13 is fixedly connected with an L-shaped support plate 14, the L-shaped support plate 14 is provided with a paperboard indentation mechanism, a recess is formed in one side of the upper top plate 13, the recess is fixedly connected with a second electric telescopic rod 3 symmetrically, the end of the inner rod of the second electric telescopic rod 3 is fixedly connected with an L-shaped side plate 31, the L-shaped side plate 31 is provided with a limiting mechanism for paperboard, the side surface of the L-shaped side plate 31 is fixedly connected with a cross plate 4, the upper end of the cross plate 4 is fixedly connected with a plurality of sleeves 41 at equal intervals, the lower end of the cross plate 4 is provided with a positioning mechanism for paperboard, and the cross plate 4 is provided with a preheating mechanism for paperboard.

[0025] Please refer to Figure 2 、 Figure 3 、 Figure 5 and Figure 6The paperboard creasing mechanism comprises a plurality of first electric telescopic rods 2 arranged on the L-shaped support plate 14, a creasing cutter 21 arranged at the lower end of the first electric telescopic rod 2, the first electric telescopic rod 2 being fixedly connected to the bottom of the inner side of the L-shaped support plate 14, and the lower end of the first electric telescopic rod 2 being fixedly connected to the creasing cutter 21 through the L-shaped support plate 14. The inner rod of the first electric telescopic rod 2 drives the creasing cutter 21 to move up and down, so that the creasing cutter 21 can perform creasing operation on paperboards of different thicknesses, thereby improving the use range of the creasing device.

[0026] Please refer to Figure 5 and Figure 6 , the upper end of the side of the L-shaped side plate 31 is symmetrically provided with a limiting groove, the L-shaped side plate 31 is slidably connected to the groove of the upper top plate 13, the limiting groove is slidably connected to the upper top plate 13, the inner side wall of the L-shaped side plate 31 is provided with a sliding groove, and the side of the sliding groove is provided with a through groove. The inner rod of the telescopic oil cylinder 12 drives the upper top plate 13 to move up and down, and the upper top plate 13 drives the paperboard creasing mechanism to move up and down through the L-shaped support plate 14, so that the creasing cutter 21 in the paperboard creasing mechanism performs creasing operation on the paperboard.

[0027] The limiting mechanism comprises a plurality of sliding rods 32 arranged on the L-shaped side plate 31, a limiting baffle 33 arranged on the inner side wall of the L-shaped side plate 31, two sliding plates 34 arranged on the side of the limiting baffle 33, and a magnet strip 35 arranged at the lower end of the limiting baffle 33. The sliding rod 32 is arranged in the through groove, and the upper and lower ends of the sliding rod 32 are fixedly connected to the upper and lower sides of the through groove, respectively. The sliding plate 34 is sleeved on the sliding rod 32, and the sliding plate 34 is slidably connected to the sliding rod 32. The sliding plate 34 is slidably connected to the through groove. The inner rod of the second electric telescopic rod 3 drives the L-shaped side plate 31 to slide along the upper top plate 13, and the L-shaped side plate 31 drives the limiting mechanism to move, so as to adjust the distance between the limiting mechanism and the paperboard creasing mechanism, so that the paperboard creasing mechanism can perform creasing operation on different positions of the paperboard, meet different needs of paperboard creasing, and improve the use range of the creasing device. The limiting baffle 33 is slidably connected to the sliding groove on the inner side wall of the L-shaped side plate 31, and the magnet strip 35 is embedded at the lower end of the limiting baffle 33. The inner rod of the telescopic oil cylinder 12 is driven to extend downward to drive the upper top plate 13 to move downward, and the upper top plate 13 drives the L-shaped side plate 31 to move downward, and the L-shaped side plate 31 drives the limiting mechanism to move downward. When the lower end of the limiting baffle 33 in the limiting mechanism contacts the upper end of the processing table 1, the magnet strip 35 at the lower end of the limiting baffle 33 is adsorbed and connected to the upper end of the processing table 1. The processing table 1 is made of metal material. The inner rod of the telescopic oil cylinder 12 stops extending. At this time, the intermittent conveying mechanism on the processing table 1 drives the paperboard to move, so that one side of the paperboard contacts the side of the limiting baffle 33. At this time, the intermittent conveying mechanism stops conveying the paperboard, and the inner rod of the telescopic oil cylinder 12 continues to extend downward.

[0028] Please refer to Figure 2 ,Figure 5 and Figure 6 The positioning mechanism comprises a plurality of buffer light rods 5 arranged on the horizontal plate 4, a limiting ring 51 arranged at the upper end of the buffer light rod 5, a buffer spring 52 sleeved at the lower end of the buffer light rod 5, and a positioning pressing plate 53 arranged at the lower end of the buffer light rod 5. The buffer light rod 5 penetrates the horizontal plate 4 from top to bottom, the upper end of the buffer light rod 5 is fixedly connected with the limiting ring 51 through the sleeve 41, the lower end of the buffer light rod 5 is fixedly connected with the positioning pressing plate 53, the buffer light rod 5 is slidably connected with the horizontal plate 4 and the sleeve 41 respectively, and the buffer spring 52 is arranged between the horizontal plate 4 and the positioning pressing plate 53. The upper end of the buffer spring 52 is inserted into the horizontal plate 4, the lower end of the buffer spring 52 is inserted into the positioning pressing plate 53, and the buffer spring 52 exerts a spring force on the positioning pressing plate 53. When the paperboard moves to the lower end of the positioning pressing plate 53, the inner rod of the telescopic oil cylinder 12 extends downward to drive the upper top plate 13 to move downward, the upper top plate 13 drives the L-shaped side plate 31 to move downward, the L-shaped side plate 31 slides downward along the limiting mechanism, and the L-shaped side plate 31 drives the positioning mechanism to move downward. When the lower end of the positioning pressing plate 53 contacts the paperboard, the L-shaped side plate 31 continues to move downward, the L-shaped side plate 31 drives the horizontal plate 4 to slide downward along the buffer light rod 5, the horizontal plate 4 extrudes the buffer spring 52, and under the action of the spring force of the buffer spring 52, the positioning pressing plate 53 firmly presses the paperboard, so that the paperboard is positioned. When the upper top plate 13 moves downward, the paperboard indentation mechanism is driven by the L-shaped support plate 14 to move downward, so that the indentation cutter 21 in the paperboard indentation mechanism can accurately perform indentation operation on the paperboard.

[0029] Please refer to Figures 2 to 5 The preheating mechanism comprises a plurality of sleeves 6 arranged on the horizontal plate 4, a fixed cover 61 arranged at the lower end of the sleeve 6, a plug rod 62 and a piston 63 arranged in the sleeve 6, a first one-way valve 64 and a second one-way valve 72 arranged at the upper end of the sleeve 6, an air inlet branch pipe 65 arranged on the first one-way valve 64, an air inlet main pipe 66 arranged at the upper end of the air inlet branch pipe 65, an air inlet hose 67 arranged at one end of the air inlet main pipe 66, an air outlet pipe 71 arranged on the second one-way valve 72, and an air outlet head 7 arranged at one end of the air outlet pipe 71. The sleeve 6 penetrates the horizontal plate 4 from top to bottom, the lower end of the sleeve 6 is arranged in an open manner, the sleeve 6 is fixedly connected with the horizontal plate 4, the lower end of the sleeve 6 is fixedly connected with the fixed cover 61, the upper end of the plug rod 62 extends into the inner cavity of the sleeve 6 through the fixed cover 61, the upper end of the plug rod 62 is fixedly connected with the piston 63, the lower end of the plug rod 62 is fixedly connected with the positioning pressing plate 53, and the piston 63 is slidably connected with the inner cavity of the sleeve 6. The plug rod 62 is slidably connected with the fixed cover 61, and the fixed cover 61 is arranged below the horizontal plate 4.

[0030] The first one-way valve 64 and the second one-way valve 72 are fixedly connected with the upper end of the sleeve 6, the lower end of the air inlet branch pipe 65 is fixedly connected with the air inlet end of the first one-way valve 64, the upper end of the air inlet branch pipe 65 is connected with the air inlet main pipe 66 through a pipe joint, the air inlet main pipe 66 is fixedly connected with the air inlet hose 67, one end of the air outlet pipe 71 is fixedly connected with the air outlet end of the second one-way valve 72, the other end of the air outlet pipe 71 is connected with the air outlet head 7 through a pipe joint, the air outlet head 7 is fixedly installed on the side of the horizontal plate 4, and the air outlet opening of the air outlet head 7 is obliquely downward. The end of the air inlet hose 67 away from the air inlet main pipe 66 is connected with the hot air storage tank, the hot air storage tank is connected with the hot air machine through a pipeline, the hot air machine conveys hot air into the hot air storage tank through the pipeline, when the L-shaped side plate 31 drives the horizontal plate 4 to slide downward along the buffer light rod 5, the horizontal plate 4 extrudes the buffer spring 52, and at the same time, the horizontal plate 4 drives the sleeve 6 to move downward, so that the inner cavity of the sleeve 6 slides downward along the piston 63, thereby extruding the hot air in the sleeve 6, the hot air flows into the air outlet pipe 71 along the second one-way valve 72, flows into the air outlet head 7 along the air outlet pipe 71, and then is blown on the paperboard through the air outlet opening of the air outlet head 7, so as to preheat the paperboard and clean dust, foreign matters and the like on the paperboard, when the paperboard indentation mechanism moves downward along the upper top plate 13, the indentation cutter 21 in the paperboard indentation mechanism performs indentation on the preheated paperboard, the preheated paperboard has better ductility, and thus the paperboard can be prevented from being broken in the indentation process.

[0031] The intermittent conveying mechanism, the telescopic oil cylinder 12, the first electric telescopic rod 2 and the second electric telescopic rod 3 are connected with the control system, and are controlled and operated through the control system, the intermittent conveying mechanism is composed of conveying rollers and a servo motor, and the conveying rollers are driven to rotate through the servo motor, so that the paperboard is intermittently conveyed.

[0032] Working principle: through the inner rod of telescopic oil cylinder 12 to drive the upper top plate 13 to move down, the upper top plate 13 drives L type side plate 31 and L type support plate 14 to move down, L type support plate 14 drives paperboard indentation mechanism to move down, L type side plate 31 drives limiting mechanism, positioning mechanism and preheating mechanism to move down, when the lower end of limiting baffle 33 in limiting mechanism contacts with the upper end of processing table 1, the magnet strip 35 at the lower end of limiting baffle 33 is adsorbed and connected with the upper end of processing table 1, the inner rod of telescopic oil cylinder 12 stops stretching out, at this time intermittent conveying mechanism on processing table 1 drives paperboard to move, so that one side of paperboard contacts with the side of limiting baffle 33, at this time intermittent conveying mechanism stops conveying paperboard, so that the inner rod of telescopic oil cylinder 12 continues to stretch out, telescopic oil cylinder 12 drives the upper top plate 13 to continue to move down, the upper top plate 13 drives L type side plate 31 to move down, L type side plate 31 drives the sliding rod 32 in limiting mechanism to move down, at this time the sliding rod 32 slides down along the sliding plate 34, L type side plate 31 slides down along the sliding plate 34 and limiting baffle 33, at the same time L type side plate 31 drives horizontal plate 4 to move down, horizontal plate 4 drives positioning mechanism to move down, when the lower end of positioning pressing plate 53 in positioning mechanism contacts with paperboard, L type side plate 31 continues to move down, at this time L type side plate 31 drives horizontal plate 4 to slide down along the buffer light rod 5, horizontal plate 4 extrudes buffer spring 52, under the action of elastic force of buffer spring 52, positioning pressing plate 53 firmly presses paperboard, so as to position paperboard, horizontal plate 4 slides down along the buffer light rod 5 at the same time drives sleeve 6 to move down, so that the inner cavity of sleeve 6 slides down along piston 63, so as to extrude hot air in sleeve 6, hot air flows into air outlet pipe 71 along second one-way valve 72, flows into air outlet head 7 along air outlet pipe 71, and then blows hot air obliquely downward on paperboard through air outlet of air outlet head 7, so as to preheat paperboard, at the same time, dust, foreign matters and the like on paperboard are cleaned, at this time the upper top plate 13 continues to move down, the upper top plate 13 drives paperboard indentation mechanism to move down through L type support plate 14, so that indentation cutter 21 in paperboard indentation mechanism performs indentation operation on paperboard, preheated paperboard has certain ductility, so as to prevent paperboard from breaking in the process of indentation, at the same time, positioning mechanism positions paperboard, so that indentation cutter 21 can accurately perform indentation operation on paperboard, after indentation is completed, the inner rod of telescopic oil cylinder 12 is retracted, the upper top plate 13 is driven to move up through telescopic oil cylinder 12, the upper top plate 13 drives L type side plate 31 and L type support plate 14 to move up, at this time L type support plate 14 drives paperboard indentation mechanism to separate from paperboard, L type side plate 31 drives horizontal plate 4 to move up, at this time positioning pressing plate 53 is still pressed on paperboard under the action of elastic force of buffer spring 52, that is, the distance between horizontal plate 4 and positioning pressing plate 53 gradually increases at this time, horizontal plate 4 drives sleeve 6 to slide up along piston 63, so as to suck hot air into sleeve 6, hot air flows into the inner cavity of sleeve 6 after flowing through air inlet hose 67, air inlet main pipe 66, air inlet branch pipe 65 and first one-way valve 64,When the upper top plate 13 drives the horizontal plate 4 to move upward by a distance, the limiting ring 51 on the upper end of the buffer light pole 5 contacts the sleeve 41. At this time, when the horizontal plate 4 continues to move upward, the horizontal plate 4 drives the positioning mechanism and the preheating mechanism to move upward, so that the positioning pressing plate 53 loosens the fixation on the paperboard. At this time, after the L-shaped side plate 31 moves upward by a distance, the slide plate 34 below it slides to the bottom of the through slot. The L-shaped side plate 31 continues to move upward, and the limiting mechanism is driven by the L-shaped side plate 31 to move upward, so that the limiting baffle 33 in the limiting mechanism is separated from the processing table 1. Until the inner rod of the telescopic oil cylinder 12 is completely retracted, the distance between the limiting baffle 33 and the processing table 1 is much larger than the thickness of the paperboard. The paperboard with completed indentation is conveyed away through the intermittent conveying mechanism on the processing table 1. At this time, the inner rod of the telescopic oil cylinder 12 is extended downward again to perform indentation operation on the next paperboard. Thus, the indentation operation can be repeated.

[0033] The inner rod of the first electric telescopic rod 2 is retracted to drive the indentation cutter 21 to move up and down, so that the indentation cutter 21 can perform indentation operation on paperboards with different thicknesses. The inner rod of the second electric telescopic rod 3 is retracted to drive the L-shaped side plate 31 to slide along the upper top plate 13. The L-shaped side plate 31 drives the limiting mechanism to move, so as to adjust the distance between the limiting mechanism and the paperboard indentation mechanism, so that the paperboard indentation mechanism can perform indentation operation on different positions of the paperboard.

[0034] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A creasing device for paperboard processing, comprising a processing table (1), the upper end of which is provided with an intermittent conveying mechanism for paperboard, characterized in that: The upper end of the processing table (1) is fixedly connected with a concave plate (11), the upper end of the concave plate (11) is fixedly connected with three telescopic oil cylinders (12) at equal intervals, the lower end of the telescopic oil cylinder (12) is fixedly connected with an upper top plate (13) penetrating through the concave plate (11), the lower end of the upper top plate (13) is fixedly connected with an L-shaped support plate (14), a paperboard indentation mechanism is installed on the L-shaped support plate (14), a recess is formed in one side of the upper top plate (13), a second electric telescopic rod (3) is fixedly connected in the recess in a symmetrical manner, an L-shaped side plate (31) is fixedly connected to the end of the inner rod of the second electric telescopic rod (3), a paperboard limiting mechanism is installed on the L-shaped side plate (31), a horizontal plate (4) is fixedly connected to the side of the L-shaped side plate (31), a plurality of sleeve pipes (41) are fixedly connected to the upper end of the horizontal plate (4) at equal intervals, a paperboard positioning mechanism is installed on the lower end of the horizontal plate (4), and a paperboard preheating mechanism is installed on the horizontal plate (4); The limiting mechanism comprises a plurality of sliding rods (32) arranged on the L-shaped side plate (31), a limiting baffle (33) arranged on the inner side wall of the L-shaped side plate (31), two sliding plates (34) arranged on the side of the limiting baffle (33), and a magnet strip (35) arranged at the lower end of the limiting baffle (33), the sliding rod (32) is arranged in a through groove, and the upper and lower ends of the sliding rod (32) are fixedly connected with the upper and lower sides of the through groove respectively, the sliding plate (34) is sleeved on the sliding rod (32), and the sliding plate (34) is in sliding connection with the sliding rod (32); The positioning mechanism comprises a plurality of buffer light rods (5) arranged on the horizontal plate (4), a limiting ring (51) arranged at the upper end of the buffer light rod (5), a buffer spring (52) sleeved at the lower end of the buffer light rod (5), and a positioning pressing plate (53) arranged at the lower end of the buffer light rod (5), the buffer light rod (5) penetrates through the horizontal plate (4) from top to bottom, the upper end of the buffer light rod (5) is fixedly connected with the limiting ring (51) penetrating through the sleeve pipe (41), and the lower end of the buffer light rod (5) is fixedly connected with the positioning pressing plate (53). The preheating mechanism comprises a plurality of sleeves (6) arranged on the horizontal plate (4), a fixed cover (61) arranged at the lower end of the sleeve (6), a plug rod (62) and a piston (63) arranged in the sleeve (6), a first one-way valve (64) and a second one-way valve (72) arranged at the upper end of the sleeve (6), an air inlet branch pipe (65) arranged on the first one-way valve (64), an air inlet main pipe (66) arranged at the upper end of the air inlet branch pipe (65), an air inlet hose (67) arranged at one end of the air inlet main pipe (66), an air outlet pipe (71) arranged on the second one-way valve (72), and an air outlet head (7) arranged at one end of the air outlet pipe (71), the sleeve (6) is installed on the horizontal plate (4) from top to bottom, the lower end of the sleeve (6) is arranged in an open manner, the sleeve (6) is fixedly connected with the horizontal plate (4), the lower end of the sleeve (6) is fixedly connected with the fixed cover (61), the upper end of the plug rod (62) extends to the inner cavity of the sleeve (6) through the fixed cover (61), the upper end of the plug rod (62) is fixedly connected with the piston (63), the lower end of the plug rod (62) is fixedly connected with the positioning pressing plate (53), and the piston (63) is slidably connected with the inner cavity of the sleeve (6). The first one-way valve (64) and the second one-way valve (72) are fixedly connected with the upper end of the sleeve (6), the lower end of the air inlet branch pipe (65) is fixedly connected with the air inlet end of the first one-way valve (64), the upper end of the air inlet branch pipe (65) is connected with the air inlet main pipe (66) through a pipe joint, the air inlet main pipe (66) is fixedly connected with the air inlet hose (67), one end of the air outlet pipe (71) is fixedly connected with the air outlet end of the second one-way valve (72), the other end of the air outlet pipe (71) is connected with the air outlet head (7) through a pipe joint, the air outlet head (7) is fixedly installed on the side of the horizontal plate (4), and the air outlet opening of the air outlet head (7) is arranged to open downward and obliquely. When the L-shaped side plate 31 drives the horizontal plate 4 to slide downward along the buffer light rod 5, the horizontal plate 4 extrudes the buffer spring 52, and simultaneously drives the sleeve 6 to move downward, so that the inner cavity of the sleeve 6 slides downward along the piston 63, so that the hot air in the sleeve 6 is extruded out, the hot air flows into the air outlet pipe 71 along the second one-way valve 72, flows into the air outlet head 7 along the air outlet pipe 71, and then blows on the paperboard through the air outlet opening of the air outlet head 7, so as to preheat the paperboard and clean the dust and foreign matters on the paperboard.

2. A creasing device for paperboard processing according to claim 1, characterized in that The paperboard indentation mechanism comprises a plurality of first electric telescopic rods (2) arranged on the L-shaped support plate (14) and indentation knives (21) arranged at the lower ends of the first electric telescopic rods (2), the first electric telescopic rods (2) are fixedly connected with the bottom of the inner side of the L-shaped support plate (14), and the lower ends of the first electric telescopic rods (2) are fixedly connected with the indentation knives (21) through the L-shaped support plate (14).

3. A creasing device for paperboard processing according to claim 1, characterized in that: The upper end of the side surface of the L-shaped side plate (31) is symmetrically provided with a limiting groove, the L-shaped side plate (31) is slidably connected with the groove of the upper top plate (13), the limiting groove is slidably connected with the upper top plate (13), a sliding groove is formed in the inner side wall of the L-shaped side plate (31), and a through groove is formed in the side surface of the sliding groove.

4. The creasing device for paperboard processing according to claim 1, characterized in that: The limiting baffle (33) is slidably connected with the sliding groove on the inner side wall of the L-shaped side plate (31), and the magnet strip (35) is embedded in the lower end of the limiting baffle (33).

5. A creasing device for paperboard processing according to claim 1, characterized in that: The buffer light pole (5) is slidably connected with the horizontal plate (4) and the sleeve (41) respectively, and the buffer spring (52) is arranged between the horizontal plate (4) and the positioning pressing plate (53).

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