Paperboard punching device for carton paperboard production

Abstract

The utility model discloses a paperboard punching device for carton paperboard production, which relates to the technical field of paperboard punching and comprises a workbench, the top of the workbench is fixedly connected with a portal frame, the top of the portal frame is fixedly connected with an air cylinder, the bottom of the air cylinder is fixedly connected with a mounting plate, and a pre-positioning mechanism is mounted below the mounting plate. The pre-positioning mechanism comprises a hollow pressing ring, a plurality of air inlets are formed in the inner side of the hollow pressing ring, a hose is fixedly connected to one side of the top of the hollow pressing ring, a filter box is fixedly connected to the top of the portal frame, and a negative pressure fan is embedded in the side, away from the hose, of the filter box. Chippings generated during drilling of the drill bit can enter the hollow pressing ring along with air through the air inlet, then the chippings are sucked into the filter box by the negative pressure fan through the hose, the chippings generated during drilling of the drill bit are treated in time, the quality of the working environment is improved, the cleanliness during production of carton paperboards is also improved, and use is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of cardboard punching, in particular to a cardboard punching device for producing cardboard of cartons. Background Art

[0002] Cartons are the most widely used packaging products and are made by processing cardboard. Cardboard, also known as board paper, is a thick paper sheet composed of various pulps processed and fibers intertwined with each other. The difference between cardboard and paper is usually distinguished by basis weight and thickness. Generally, those with a basis weight exceeding 250 g / m2 and a thickness greater than 0.5 mm are called cardboard. During the production process of carton cardboard, punching operations are often required for the cardboard;

[0003] After retrieval, Chinese Patent No. CN220904234U discloses a punching device for producing carton cardboard, including a support table and an electric push rod; an electric push rod is arranged at the top of the support table; a first support seat is fixedly connected to the bottom of the electric push rod; a driving motor is fixedly connected to the bottom of the first support seat; a cutting wheel is fixedly connected to the output end of the driving motor; a blanking groove is formed in the middle of the support table; the cutting wheel and the blanking groove are corresponding in position;

[0004] When the above-mentioned disclosed document drives the cutting wheel to rotate and move up and down for punching, structures such as a pressing seat are added to realize the pre-positioning of the cardboard, that is, before the cutting wheel touches the cardboard, the pressing seat presses on the cardboard to position it, and then the cutting wheel cuts to improve the punching accuracy. During the process of the cutting wheel cutting and punching, although most of the debris will enter the collection box through the blanking groove, a large amount of debris and dust will still be raised on the outer ring of the cutting wheel and cannot enter the collection box. If these debris are not cleaned in time, it will not only pollute the working environment and reduce the air quality of the working environment, but also affect the cleanliness during the production of carton cardboard. For this reason, this application proposes a cardboard punching device for producing carton cardboard. Summary of the Utility Model

[0005] The utility model provides a cardboard punching device for producing carton cardboard to solve the above technical problems.

[0006] To solve the above technical problems, a cardboard punching device for producing carton cardboard provided by the utility model includes a workbench, a gantry is fixedly connected to the top of the workbench, a cylinder is fixedly connected to the top of the gantry, an installation plate is fixedly connected to the bottom of the cylinder, the installation plate is located inside the gantry, a motor sleeve is fixedly connected to the bottom of the installation plate through bolts, a motor is fixedly connected to the inside of the motor sleeve, a drill bit is fixedly connected to the output shaft of the motor, the drill bit is located below the motor sleeve, a pre-positioning mechanism is installed below the installation plate, and the pre-positioning mechanism includes a hollow pressing ring, and the hollow pressing ring is located below the drill bit;

[0007] A plurality of air inlets are provided on the inner side of the hollow pressing ring. One side of the top of the hollow pressing ring is fixedly connected with a hose. The top of the gantry is fixedly connected with a filter box. One end of the hose away from the hollow pressing ring extends into the filter box. A negative pressure fan is embedded and installed on one side of the filter box away from the hose. A filter screen plate is fixedly connected inside the filter box.

[0008] Preferably, the pre-positioning mechanism further includes four guide rods. All four guide rods are fixedly connected to the top of the hollow pressing ring. The hose is located between two of the guide rods. The guide rods penetrate through the mounting plate, and the guide rods are slidably connected to the mounting plate. A limit block is fixedly connected to the top of the guide rod. A limit ring is fixedly connected to the outer end of the guide rod. A spring is sleeved on the outer end of the guide rod. The spring is located between the mounting plate and the limit ring.

[0009] Preferably, the filter box is composed of a box body and a box cover. The box cover is fixedly connected to the top of the box body by bolts. The filter box is located on one side of the cylinder.

[0010] Preferably, heat dissipation grille openings are provided on both the front and rear sides of the motor housing.

[0011] Preferably, a controller is fixedly installed on one side inside the gantry. The cylinder, the motor, and the negative pressure fan are respectively electrically connected to the controller.

[0012] Preferably, a plurality of anti-slip pads and a pressure sensor are embedded and installed at the bottom of the hollow pressing ring. The pressure sensor is located between two of the anti-slip pads. The pressure sensor is electrically connected to the controller.

[0013] Preferably, a drill bit perforation is provided at the center of the top of the workbench. The drill bit perforation is located directly below the drill bit. Two reinforcing plates are respectively fixedly connected to the joints of the two bottom sides of the gantry and the workbench.

[0014] Compared with the related art, a cardboard punching device for producing cardboard boxes provided by the present utility model has the following beneficial effects:

[0015] While pre-positioning the cardboard to be punched through the pre-positioning mechanism, the debris generated during the drilling of the drill bit can enter the inside of the hollow pressing ring along with the air through the air inlets, and then be sucked into the filter box by the negative pressure fan through the hose. The debris in the air will be filtered by the filter screen plate in the filter box. The debris generated during the drilling of the drill bit will neither float in the air nor adhere to the cardboard, improving the quality of the working environment and also improving the cleanliness during the production of cardboard boxes for cartons, and is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an overall structural schematic diagram of a cardboard punching device for producing cardboard boxes for cartons proposed by the present utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the cylinder and the mounting plate of a cardboard punching device for producing cardboard boxes of the present utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the motor sleeve of a cardboard punching device for producing cardboard boxes of the present utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the pre - positioning mechanism of a cardboard punching device for producing cardboard boxes of the present utility model;

[0020] Figure 5 This is a schematic diagram of the bottom structure of the annular pressing block of a cardboard punching device for producing cardboard boxes of the present utility model;

[0021] Figure 6 This is a schematic diagram of the internal structure of the box body of a cardboard punching device for producing cardboard boxes of the present utility model.

[0022] Reference numerals in the figure: 1, workbench; 2, gantry; 3, cylinder; 4, mounting plate; 5, motor sleeve; 6, motor; 7, drill bit; 8, heat dissipation grille opening; 9, hollow pressing ring; 10, guide rod; 11, limiting ring; 12, spring; 13, limiting block; 14, air inlet; 15, hose; 16, filter box; 161, box body; 162, box cover; 17, negative pressure fan; 18, filter screen plate; 19, pressure sensor; 20, anti - slip pad; 21, controller; 22, reinforcement plate; 23, drill bit perforation. Detailed implementation manners

[0023] The embodiment is given by Figures 1-6 The present utility model includes a workbench 1. A gantry 2 is fixedly connected to the top of the workbench 1. A cylinder 3 is fixedly connected to the top of the gantry 2. The bottom of the cylinder 3 is fixedly connected to a mounting plate 4. The mounting plate 4 is located inside the gantry 2. The bottom of the mounting plate 4 is fixedly connected to a motor sleeve 5 by bolts. A motor 6 is fixedly connected inside the motor sleeve 5. The output shaft of the motor 6 is fixedly connected to a drill bit 7. The drill bit 7 is located below the motor sleeve 5. A pre - positioning mechanism is installed below the mounting plate 4. The pre - positioning mechanism includes a hollow pressing ring 9. The hollow pressing ring 9 is located below the drill bit 7;

[0024] The cylinder 3 can drive the mounting plate 4 and all components mounted on the mounting plate 4 to move up and down, that is, drive the drill bit 7 to move up and down, while the motor 6 can drive the drill bit 7 to rotate at high speed.

[0025] A plurality of air inlets 14 are provided inside the hollow pressing ring 9. One side of the top of the hollow pressing ring 9 is fixedly connected to a hose 15. The top of the gantry 2 is fixedly connected to a filter box 16. One end of the hose 15 away from the hollow pressing ring 9 extends into the filter box 16. A negative pressure fan 17 is embedded and installed on one side of the filter box 16 away from the hose 15. A filter screen plate 18 is fixedly connected inside the filter box 16.

[0026] In addition to playing the role of pre-positioning by pressing on the cardboard, the hollow pressing ring 9 in the pre-positioning mechanism, with its hollow design and the air inlets 14 provided on its inner side, when the negative pressure fan 17 is started, the debris generated during the drilling of the drill bit 7 can enter the inside of the hollow pressing ring 9 through the air inlets 14 along with the air, and then be sucked into the filter box 16 by negative pressure through the hose 15 and filtered by the filter screen plate 18. The debris generated during the operation of the drill bit 7 will not be lifted and float in the air, improving the quality of the working environment, nor will it fall on the cardboard, improving the cleanliness during the production of cardboard boxes.

[0027] The pre-positioning mechanism further includes four guide rods 10. The four guide rods 10 are all fixedly connected to the top of the hollow pressing ring 9. The hose 15 is located between two of the guide rods 10. The guide rods 10 penetrate through the mounting plate 4, and the guide rods 10 are slidably connected to the mounting plate 4. A limit block 13 is fixedly connected to the top of the guide rods 10. A limit ring 11 is fixedly connected to the outer end of the guide rods 10. A spring 12 is sleeved on the outer end of the guide rods 10. The spring 12 is located between the mounting plate 4 and the limit ring 11.

[0028] In the natural state, the hollow pressing ring 9 in the pre-positioning mechanism is slightly lower than the drill bit 7 by a certain distance. Therefore, when driving the drill bit 7 to move downward for drilling, the hollow pressing ring 9 will first contact and press on the cardboard. As the drill bit 7 continues to move downward, the spring 12 is compressed to generate an elastic force, and its elastic force will push the hollow pressing ring 9 to press on the cardboard for pre-positioning, ensuring that the cardboard will not be displaced during drilling and improving the drilling accuracy.

[0029] The filter box 16 is composed of a box body 161 and a box cover 162. The box cover 162 is fixedly connected to the top of the box body 161 by bolts. The filter box 16 is located on one side of the cylinder 3. The filter box 16 is designed into two parts, namely the box body 161 and the box cover 162, so that the debris filtered by the filter screen plate 18 in the box body 161 can be cleaned after opening the box cover 162.

[0030] Heat dissipation grille openings 8 are provided on both the front and rear sides of the motor sleeve 5. The heat dissipation grille openings 8 facilitate the ventilation and heat dissipation of the motor 6.

[0031] One side inside the gantry 2 is fixedly installed with a controller 21. The air cylinder 3, the motor 6, and the negative pressure fan 17 are respectively electrically connected to the controller 21. A plurality of anti-slip pads 20 and a pressure sensor 19 are inlaid at the bottom of the hollow pressing ring 9. The pressure sensor 19 is located between two of the anti-slip pads 20, and the pressure sensor 19 is electrically connected to the controller 21. The controller 21 controls the air cylinder 3, the motor 6, and the negative pressure fan 17. The anti-slip pads 20 below the hollow pressing ring 9 can increase the friction between the hollow pressing ring 9 and the cardboard, further improving the stability of the cardboard during pre-positioning. The pressure sensor 19 can detect the pressure when the hollow pressing ring 9 presses on the cardboard. A pressure threshold can be set in advance. When the pressure sensor 19 detects that the pressure of the hollow pressing ring 9 on the cardboard reaches and exceeds the set pressure threshold, the detection information is fed back to the controller 21. Subsequently, the controller 21 automatically controls the operation of the negative pressure fan 17. On the contrary, when the pressure is less than the pressure threshold, the negative pressure fan 17 stops operating. Thus, when the negative pressure fan 17 sucks debris, it can flexibly follow the drilling timing of the drill bit 7, without the need to keep running all the time, which can save electric energy and also reduce the workload of workers as there is no need for manual start and stop by workers.

[0032] A drill bit through-hole 23 is provided at the center of the top of the workbench 1. The drill bit through-hole 23 is directly below the drill bit 7. At the connection between the two bottom sides of the gantry 2 and the workbench 1, two reinforcing plates 22 are respectively fixedly connected. The diameter of the drill bit through-hole 23 is larger than the diameter of the drill bit 7. After the drill bit 7 completely drills through the cardboard, it can pass through the drill bit through-hole 23, and there will be no problem of interference between the drill bit 7 and the workbench 1. The reinforcing plates 22 can improve the stability and firmness of the gantry 2 above the workbench 1.

[0033] Working principle:

[0034] When punching holes in the cardboard, place the cardboard on the workbench 1 and place the area to be punched directly below the drill bit 7. Subsequently, control the operation of the air cylinder 3 and the motor 6 through the controller 21. When the air cylinder 3 operates, it will push the mounting plate 4 and all the components mounted on the mounting plate 4 to move downward synchronously. The motor 6 can drive the drill bit 7 to rotate rapidly. Before the drill bit 7 moves downward and is about to contact the cardboard, the hollow pressing ring 9 in the pre-positioning mechanism will first contact and press on the cardboard. As the mounting plate 4 continues to move downward with the drill bit 7, while the hollow pressing ring 9 remains stationary on the cardboard, the mounting plate 4 gradually approaches the hollow pressing ring 9, and the spring 12 on the guide rod 10 will be compressed downward by the mounting plate 4 and generate an elastic force. The elastic force of the spring 12 will push the hollow pressing ring 9 to gradually increase the pressure on the cardboard through the limit ring 11 and the guide rod 10. Until the drill bit 7 also contacts the cardboard for punching, the cardboard is pressed by the hollow pressing ring 9 and will not move randomly so that the drill bit 7 can punch holes accurately;

[0035] When the hollow pressing ring 9 presses on the cardboard with gradually increasing pressure during a period, the pressure sensor 19 below the hollow pressing ring 9 can detect the real-time pressure. When the pressure detected by the pressure sensor 19 reaches and exceeds the set threshold, the controller 21 will automatically start the negative pressure fan 17. At this time, the negative pressure fan 17 can suck out the air inside the filter box 16 to form a negative pressure inside the filter box 16. The debris and dust generated when the drill bit 7 drills holes will enter the inside of the hollow pressing ring 9 through the air inlet 14 and finally be sucked into the inside of the filter box 16 through the hose 15. The debris and dust entering the inside of the filter box 16 along with the air will be filtered by the filter screen plate 18 and left in the filter box 16. Subsequently, the box cover 162 can be opened to clean the dust regularly.

Claims

1. A cardboard punching device for producing cardboard boxes, comprising a workbench (1), characterized in that: The top of the workbench (1) is fixedly connected to a gantry (2), the top of the gantry (2) is fixedly connected to a cylinder (3), the bottom of the cylinder (3) is fixedly connected to a mounting plate (4), the mounting plate (4) is located inside the gantry (2), the bottom of the mounting plate (4) is fixedly connected to a motor sleeve (5) by bolts, the inside of the motor sleeve (5) is fixedly connected to a motor (6), the output shaft of the motor (6) is fixedly connected to a drill bit (7), the drill bit (7) is located below the motor sleeve (5), and a pre-positioning mechanism is installed below the mounting plate (4), the pre-positioning mechanism comprises a hollow pressure ring (9), and the hollow pressure ring (9) is located below the drill bit (7); A plurality of air inlets (14) are provided on the inner side of the hollow pressure ring (9); a hose (15) is fixedly connected to one side of the top of the hollow pressure ring (9); a filter box (16) is fixedly connected to the top of the gantry (2); an end of the hose (15) away from the hollow pressure ring (9) extends to the inside of the filter box (16); a negative pressure fan (17) is embedded and installed on one side of the filter box (16) away from the hose (15); and a filter screen plate (18) is fixedly connected to the inside of the filter box (16).

2. A cardboard punching device for producing cardboard for carton board according to claim 1, characterized in that: The pre-positioning mechanism further comprises four guide rods (10), the four guide rods (10) are all fixedly connected to the top of the hollow pressure ring (9), the hose (15) is located between two of the guide rods (10), the guide rod (10) passes through the mounting plate (4), and the guide rod (10) and the mounting plate (4) are slidably connected, the top of the guide rod (10) is fixedly connected to a limiting block (13), the outer end of the guide rod (10) is fixedly connected to a limiting ring (11), and the outer end of the guide rod (10) is sleeved with a spring (12), and the spring (12) is located between the mounting plate (4) and the limiting ring (11).

3. A cardboard punching device for producing cardboard for carton board according to claim 1, characterized in that: The filter box (16) is composed of a box body (161) and a box cover (162); the box cover (162) is fixedly connected to the top of the box body (161) by means of bolts; the filter box (16) is located on one side of the cylinder (3).

4. A cardboard punching device for producing cardboard for carton board according to claim 1, characterized in that: The motor sleeve (5) is provided with heat dissipation grille openings (8) on both the front and rear sides.

5. A cardboard punching device for producing cardboard for carton board according to claim 1, characterized in that: A controller (21) is fixedly mounted on one side of the interior of the gantry (2), and the cylinder (3), the motor (6) and the negative pressure fan (17) are electrically connected to the controller (21) respectively.

6. A cardboard punching device for producing cardboard for carton board according to claim 5, characterized in that: A plurality of anti-skid pads (20) and a pressure sensor (19) are embedded and installed on the bottom of the hollow pressure ring (9); the pressure sensor (19) is located between two of the anti-skid pads (20); and the pressure sensor (19) is electrically connected to a controller (21).

7. A cardboard punching device for producing cardboard for carton board according to claim 1, characterized in that: A drill hole (23) is provided at the center of the top of the workbench (1), and the drill hole (23) is located directly below the drill bit (7). Two reinforcing plates (22) are fixedly connected to the bottom of both sides of the gantry (2) and the connection between the workbench (1).

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