A cam gluing control mechanism used in paper bag machines

Abstract

A cam gluing control mechanism used in a paper bag machine comprises a frame, a gluing mechanism installed at one end of the frame, a printing mechanism and a cutting mechanism installed at the other end of the frame. By synchronously transmitting the gluing mechanism, the printing mechanism and the cutting mechanism, the gluing, printing and cutting processes of the paper bag are synchronously performed at corresponding workstations, effectively preventing production errors of the paper bag due to transmission on the production line, ensuring the accuracy of paper bag production, and at the same time, through the synchronous transmission of the mechanism, when the paper bag machine performs the surface gluing, printing and cutting processes, there is no need to use a complex control system to perform synchronous control among the three, thereby simplifying the control structure, reducing the manufacturing cost of the paper bag machine, and stabilizing the production operation of the paper bag.

Description

Technical Field

[0001] The invention relates to the technical field of paper bag machines, and in particular to a cam gluing control mechanism applied to a paper bag machine. Background Art

[0002] At present, paper bags are widely used in the packaging field. Before paper bags are formed, they are blank pieces of paper. Paper pieces are produced into paper bags through paper bag machines. Paper bag machines are highly automated equipment that can form finished paper bags after the paper on the paper tube undergoes edge correction, breakpoints, folding, pulling and edge sealing processes and output them in stacks. After the paper bag is manufactured, one end of the paper bag is sealed and the other end is open. After the items are loaded from the open end of the paper bag, the open end needs to be sealed. The existing post-sealing processes include double-sided tape sealing, glue sealing and other packaging The double-sided adhesive sealing method mentioned above requires tearing off the sticker strip and then folding and pasting it for sealing. However, the action of tearing off the double-sided adhesive strip needs to be done manually. At the same time, it is difficult to realize the tearing action according to the existing robot technology, resulting in extremely low sealing efficiency of paper bags, which cannot meet the current post-sealing process requirements and affect the entire packaging process of paper bags. The hot melt adhesive sealing in the glue sealing can solve the problem that the above process cannot be carried out by automated equipment. It only needs to pre-coat the surface of the long paper bag with hot melt adhesive, and the hot melt adhesive will be condensed. After solidification, there is no stickiness, so the application of hot melt glue will not affect the stacking and storage of paper bags. After the paper bags are filled with items, an ultraviolet lamp is used to irradiate the corresponding position of the paper bags where the hot melt glue is applied. After the glue becomes sticky, the open end of the paper bag is folded to the hot melt glue position for pasting and sealing. It is very convenient, and the hot melt glue sealing process is easy to be realized by automated equipment, but the existing paper bag machine does not have a gluing mechanism for the outer surface, and manual gluing or an additional glue spraying mechanism or glue printing mechanism is required for gluing. Manual gluing is inefficient and requires a lot of manpower and material resources, which is not suitable for the production of paper bags. In addition, if the glue spraying mechanism and the glue printing mechanism are to achieve precise control of the gluing area, their structure is relatively complex and the production cost is high. At the same time, the melting temperature of the hot melt glue is high, so the temperature of the workstation where the gluing mechanism is located is relatively high. Therefore, a gluing mechanism that is compatible with the paper bag production function is set on the paper bag machine. How to apply the gluing mechanism to the paper bag machine so that the paper bag machine can operate normally and efficiently has become an important technical breakthrough for paper bag machine manufacturers at this stage. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a cam gluing control mechanism for a paper bag machine, which has simple control, stable operation and high action synchronization.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A cam gluing control mechanism used in a paper bag machine comprises a frame, a gluing mechanism installed at one end of the frame, a printing mechanism and a cutting mechanism installed at the other end of the frame.

[0006] The gluing mechanism includes a glue box, a gluing roller arranged above the glue box, a printing glue auxiliary roller arranged above the gluing roller, and a cam arranged above the printing glue roller. The printing glue auxiliary roller moves up and down with the rotation of the cam, and performs separation and lamination with the gluing roller alternately. The gluing roller and the printing glue auxiliary roller cooperate to form a gluing channel for the paper bag to pass through.

[0007] The printing mechanism comprises an ink tank, an ink wheel arranged above the ink tank, a screen printing wheel arranged above the ink wheel, a resin plate printing wheel arranged above the screen printing wheel, and a guide wheel arranged above the resin plate printing wheel, wherein the resin plate printing wheel and the guide wheel cooperate to form a printing channel for the paper bag to pass through;

[0008] The cutting mechanism comprises a left pricking wheel for cutting paper bags, a right pricking wheel for pressing against the paper bags for the left pricking wheel to pierce holes and form cutting holes, and a pressing wheel for pressing the paper bags to pierce holes. The left pricking wheel cooperates with the right pricking wheel to form a cutting channel for the paper bags to pass through. The cam, the resin plate printing wheel and the left pricking wheel are connected to rotate synchronously at angular speeds, and the ink wheel is connected to rotate synchronously at linear speeds with the glue roller.

[0009] In the present invention, the frame includes two relatively arranged gluing mounting plates, the gluing mechanism is installed between the two gluing mounting plates to form a gluing station, and the gluing roller includes a rotating shaft I with both ends mounted on the two gluing mounting plates, a gluing wheel sleeved on the middle of the rotating shaft I, and the lower surface of the gluing wheel is immersed in the glue in the glue box.

[0010] In the present invention, the rubber printing auxiliary roller is mounted between two glue application mounting plates, and rotating wheels cooperating with cams are provided at both ends of the rubber printing auxiliary roller. Up and down moving holes for the rubber printing auxiliary roller to move up and down are provided in the two glue application mounting plates, and an elastic component connected to the rubber printing auxiliary roller is provided in the up and down moving holes.

[0011] In the present invention, the cam is mounted between two glue-mounting plates via a rotating shaft II. Two cams are provided, and the two cams are respectively arranged at two ends of the rotating shaft II and are matched and connected with two rotating wheels.

[0012] In the present invention, the frame also includes two printing and cutting installation plates for installing the printing mechanism and the cutting mechanism, the two printing and cutting installation plates are arranged opposite to each other, the resin plate printing wheel is mounted between the two printing and cutting installation plates through the rotating shaft III, and the two printing and cutting installation plates are provided with left and right moving holes I for adjusting the left and right movement of the resin plate printing wheel, and the rotating shaft III is inserted into the left and right moving holes I.

[0013] In the present invention, the left pricking wheel is mounted between two printing cutter mounting plates via a rotating shaft IV. The two printing cutter mounting plates are provided with a left-right moving hole II for adjusting the left pricking wheel to move left-right. The rotating shaft IV is inserted into the left-right moving hole II.

[0014] In the present invention, the gluing mechanism, printing mechanism and cutting mechanism are driven by belts or chains.

[0015] In the present invention, the cam is a cam with a variable diameter.

[0016] In the present invention, both the glue tank and the ink tank are provided with a constant temperature device.

[0017] The beneficial effects of the present invention are as follows: the present invention synchronizes the transmission between the gluing mechanism, the printing mechanism and the cutting mechanism, so that the gluing, printing and cutting processes of the paper bag are synchronously performed at corresponding workstations, effectively preventing production errors of the paper bag due to transmission on the production line, so that the accuracy of paper bag production is guaranteed; at the same time, through the synchronous transmission of the mechanism, when the paper bag machine performs the surface gluing, printing and cutting processes, there is no need to use a complex control system to perform synchronous control among the three, so that the control structure is simplified, the manufacturing cost of the paper bag machine is reduced, and the production operation of the paper bag is stabilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0020] Figure 2 for Figure 1 Structural diagram of the middle view direction AA;

[0021] Figure 3 Schematic diagram of the installation structure of the printing mechanism and the cutting mechanism of this embodiment;

[0022] Figure 4 It is a structural schematic diagram of the rack of this embodiment;

[0023] Figure 5 Schematic diagram of the structure of the paper bag in this embodiment. DETAILED DESCRIPTION

[0024] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] Example:

[0026] like Figures 1 to 4As shown, this embodiment discloses a cam gluing control mechanism applied to a paper bag machine, comprising a frame 1, a gluing mechanism 2 installed at one end of the frame 1, a printing mechanism 3 installed at the other end of the frame 1, and a cutting mechanism 4, wherein the gluing mechanism 2 comprises a glue tank 21, a gluing roller 22 arranged above the glue tank 21, a printing glue auxiliary roller 23 arranged above the gluing roller 22, and a cam 24 arranged above the printing glue roller, wherein the printing glue auxiliary roller 23 moves up and down with the rotation of the cam 24, and performs separation and lamination alternately with the gluing roller 22, wherein the gluing roller 22 cooperates with the printing glue auxiliary roller 23 to form a gluing channel 25 through which the paper bag passes; the printing mechanism 3 comprises an ink tank 31, an ink wheel 32 arranged above the ink tank 31, a screen printing wheel 33 arranged above the ink wheel 32, and a resin plate arranged above the screen printing wheel 33. The printing wheel 34 and the guide wheel 35 are arranged above the resin plate printing wheel 34, and the resin plate printing wheel 34 and the guide wheel 35 cooperate to form a printing channel 36 for the paper bag to pass through; the cutting mechanism 4 includes a left pricking wheel 41 for cutting the paper bag, a right pricking wheel 42 for pressing the paper bag for the left pricking wheel 41 to pierce holes and form cuts, and a pressing wheel 43 for pressing the paper bag to pierce holes, and the left pricking wheel 41 and the right pricking wheel 42 cooperate to form a cutting channel 44 for the paper bag to pass through, the cam 24, the resin plate printing wheel 34, and the left pricking wheel 41 are connected to rotate synchronously at an angular velocity, and the ink wheel 32 is connected to rotate synchronously with a gluing roller 22 at a linear velocity, so that when the gluing mechanism 2 is gluing the surface of the paper bag, the printing mechanism 3 is also printing synchronously, and the cutting mechanism 4 is also forming cuts synchronously, and the three processes are synchronously performed in the three mechanisms respectively. In this embodiment, the paper bag strip to be processed passes through the gluing mechanism 2, the printing mechanism 3, and the cutting mechanism 4 in sequence to respectively perform three processes of surface gluing, surface printing, and forming cutting marks. Of course, these three processes can be adjusted according to the actual production of the paper bag machine. In the production process, the gluing mechanism 2, the printing mechanism 3, and the cutting mechanism 4 are synchronously rotated through belts or chains without the need for a complex control system for synchronous control. The control structure is simple and the manufacturing cost is low. When the paper bag strip passes through the gluing mechanism 2, the paper bag strip passes through the gluing channel 25, and the gluing roller 22 and the cam 24 rotate continuously. The cam 24 includes an outer convex portion with a larger diameter and an inner concave portion with a smaller diameter. When When the cam 24 rotates until the outer convex part contacts the rotating wheels 231 at both ends of the rubber printing auxiliary roller 23, the outer convex part presses the rubber printing auxiliary roller 23 downward to move it in the direction of approaching the upper glue roller 22, and the rubber printing auxiliary roller 23 and the upper glue roller 22 press the paper bag strip to coat the surface with glue. The arc length of the outer convex part determines the length of the glue coating on the surface of the paper bag, and the width of the upper glue wheel 222 in the upper glue roller 22 determines the width of the glue coating on the surface of the paper bag. When the cam 24 rotates until the inner concave part contacts the rotating wheels 231 at both ends of the rubber printing auxiliary roller 23, the rubber printing auxiliary roller 23 moves upward and resets with the elastic component 26, and the rubber printing auxiliary roller 23 moves upward away from the upper glue roller 22, the paper bag strip is separated from the upper glue wheel 222, and the surface gluing is terminated.When the paper bag strip passes through the printing mechanism 3, the paper bag strip passes through the printing channel 36, the ink wheel 32 and the resin plate printing wheel 34 rotate continuously, the ink wheel 32 transfers the ink to the resin plate printing wheel 34 in sequence, and then the resin plate printing wheel 34 prints the printing information on the corresponding position of the paper bag strip. When the paper bag strip passes through the cutting mechanism 4, the paper bag strip passes through the cutting channel 44, the left cutting wheel 41 and the right cutting wheel 42 rotate continuously, and when the bayonets of the left cutting wheel 41 and the right cutting wheel 42 are in the same direction and opposite to each other, a cut is formed on the paper bag strip.

[0027] like Figure 5 As shown, the gluing mechanism 2 and the printing mechanism 3 apply glue and print on the gluing area on the surface of the paper bag respectively, and the length and position of the gluing area on the surface of the paper bag are controlled by the convex portion of the cam 24, that is, the arc length of the convex portion determines the length of the gluing area on the surface of the paper bag, and the relative position of the convex portion in the cam 24 determines the relative position of the surface gluing area in the paper bag. The surface gluing area is coated with hot melt adhesive. After the paper bag is loaded with items, the hot melt adhesive in the surface gluing area is heated, and then the open end of the paper bag is folded toward the surface gluing area to seal. The above process can be completed by automated equipment.

[0028] As a preferred embodiment, the frame 1 includes two oppositely arranged gluing installation plates 11, the gluing mechanism 2 is installed between the two gluing installation plates 11 to form a gluing station, the gluing roller 22 includes a rotating shaft Ⅰ221 with two ends mounted on the two gluing installation plates 11, and a gluing wheel 222 sleeved on the middle of the rotating shaft Ⅰ221. In application, the gluing wheels 222 of different widths can be replaced to adapt to different gluing widths on the surface of paper bags, thereby improving the versatility of the present invention. The lower surface of the gluing wheel 222 is immersed in the glue in the glue tank 21. The printing glue auxiliary roller 23 is mounted between the two gluing installation plates 11, and the two ends of the printing glue auxiliary roller 23 are provided with a rotating wheel 231 that cooperates with the cam 24. The two gluing installation plates 11 are provided with an up-and-down moving hole 12 for the printing glue auxiliary roller 23 to move up and down, and the up-and-down moving hole 12 is provided with an elastic component 26 connected to the printing glue auxiliary roller 23. The cam 24 is mounted between the two gluing installation plates 11 through the rotating shaft II 241. There are two cams 24. The two cams 24 are respectively arranged at the two ends of the rotating shaft II 241 and are connected with the two rotating wheels 231. The rotation of the cam 24 drives the rubber printing auxiliary roller 23 to move up and down along the up and down moving hole 12. The rubber printing auxiliary roller 23 moves up and down to realize the contact and separation action between the rubber printing auxiliary roller 23 and the rubber applying wheel 222. The rubber printing auxiliary roller 23 is in a free rotation state and can be driven to rotate when the paper bag strip passes through.

[0029] As a preferred embodiment, the frame 1 also includes two printing and cutting installation plates 13 for installing the printing mechanism 3 and the cutting mechanism 4. The two printing and cutting installation plates 13 are arranged opposite to each other. The resin plate printing wheel 34 is mounted between the two printing and cutting installation plates 13 through the rotating shaft III 341. The two printing and cutting installation plates 13 are provided with left and right moving holes Ⅰ14 for adjusting the left and right movement of the resin plate printing wheel 34. The rotating shaft III 341 is inserted into the left and right moving holes Ⅰ14. The width of the printing channel 36 is adjusted through the left and right moving holes Ⅰ14 to make the width of the printing channel 36 match the thickness of the paper bag strip, so that the present invention can process paper bags of different thicknesses, thereby improving the versatility of the present invention. The printing mechanism 3 is arranged above the cutting mechanism 4, and the gluing mechanism 2 is arranged on the opposite side of the printing mechanism 3 to avoid affecting the heat dissipation and temperature interference of the constant temperature devices 211 of the two.

[0030] As a preferred embodiment, the left pricking wheel 41 is mounted between two printing cut mark mounting plates 13 via a rotating shaft IV411. The two printing cut mark mounting plates 13 are provided with a left-right moving hole II15 for adjusting the left pricking wheel 41 to move left and right. The rotating shaft IV411 is inserted into the left-right moving hole II15. The function of the left-right moving hole II15 is similar to that of the left-right moving hole I14.

[0031] As a preferred embodiment, the gluing mechanism 2, the printing mechanism 3, and the cutting mechanism 4 are driven by a belt or a chain. The cam 24 is a variable diameter cam 24. The glue tank 21 and the ink tank 31 are both provided with a constant temperature device 211, and the glue tank 21 is provided with a scraper 212 for scraping the glue layer on the glue roller 22.

[0032] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means belongs to the protection scope of the present invention.

Claims

1. A cam gluing control mechanism used in a paper bag machine, characterized in that: The invention comprises a frame (1), a gluing mechanism (2) installed at one end of the frame (1), a printing mechanism (3) installed at the other end of the frame (1), and a cutting mechanism (4). The gluing mechanism (2) comprises a glue box (21), a gluing roller (22) arranged above the glue box (21), a glue printing auxiliary roller (23) arranged above the gluing roller (22), and a cam (24) arranged above the glue printing roller. The glue printing auxiliary roller (23) moves up and down as the cam (24) rotates, and performs separation and lamination actions alternately with the gluing roller (22). The gluing roller (22) and the glue printing auxiliary roller (23) cooperate to form a gluing channel (25) through which the paper bag passes. The printing mechanism (3) comprises an ink tank (31), an ink wheel (32) arranged above the ink tank (31), a screen printing wheel (33) arranged above the ink wheel (32), a resin plate printing wheel (34) arranged above the screen printing wheel (33), and a guide wheel (35) arranged above the resin plate printing wheel (34); the resin plate printing wheel (34) and the guide wheel (35) cooperate to form a printing channel (36) through which the paper bag passes; The cutting mechanism (4) comprises a left cutting wheel (41) for cutting the paper bag, a right cutting wheel (42) for pressing against the paper bag for the left cutting wheel (41) to pierce holes to form cutting holes, and a pressing wheel (43) for pressing the paper bag to pierce holes. The left cutting wheel (41) and the right cutting wheel (42) cooperate to form a cutting channel (44) for the paper bag to pass through. The cam (24), the resin plate printing wheel (34), and the left cutting wheel (41) are connected to rotate synchronously at an angular speed, and the ink wheel (32) and the glue roller (22) are connected to rotate synchronously at a linear speed. When the paper bag strip passes through the gluing mechanism (2), the paper bag strip passes through the gluing channel (25), and the gluing roller (22) and the cam (24) rotate continuously. The cam (24) includes an outer convex portion with a larger diameter and an inner concave portion with a smaller diameter. When the cam (24) rotates until the outer convex portion contacts the rotating wheels (231) at both ends of the glue printing auxiliary roller (23), the outer convex portion presses the glue printing auxiliary roller (23) downward to move in a direction close to the upper glue roller (22), and the glue printing auxiliary roller (23) and the gluing roller (22) press the paper bag strip. The surface is pressed and glue is applied, the arc length of the outer convex part determines the length of the glue applied on the surface of the paper bag, and the width of the glue-applying wheel (222) in the glue-applying roller (22) determines the width of the glue-applying on the surface of the paper bag. When the cam (24) rotates until the inner concave part contacts the rotating wheels (231) at both ends of the glue-printing auxiliary roller (23), the glue-printing auxiliary roller (23) moves upward and resets along with the elastic component (26), and the glue-printing auxiliary roller (23) moves upward away from the glue-applying roller (22), the paper bag strip is separated from the glue-applying wheel (222), and the surface glue-applying is terminated; When the paper bag strip passes through the printing mechanism (3), the paper bag strip passes through the printing channel (36), the ink wheel (32) and the resin plate printing wheel (34) rotate continuously, the ink wheel (32) transfers ink to the resin plate printing wheel (34) in sequence, and then the resin plate printing wheel (34) prints the printing information at the corresponding position of the paper bag strip; When the paper bag strip passes through the cutting mechanism (4), the paper bag strip passes through the cutting channel (44), and the left cutting wheel (41) and the right cutting wheel (42) rotate continuously. When the bayonets of the left cutting wheel (41) and the right cutting wheel (42) are in the same direction and opposite to each other, a cut is formed on the paper bag strip; The frame (1) includes two glue-applying mounting plates (11) arranged opposite to each other, the glue-applying mechanism (2) is installed between the two glue-applying mounting plates (11) to form a glue-applying station, the glue-applying roller (22) includes a rotating shaft I (221) with two ends mounted on the two glue-applying mounting plates (11), a glue-applying wheel (222) sleeved on the middle of the rotating shaft I (221), and the lower surface of the glue-applying wheel (222) is immersed in the glue in the glue box (21); The frame (1) further comprises two printing and cutting installation plates (13) for installing the printing mechanism (3) and the cutting mechanism (4), the two printing and cutting installation plates (13) being arranged opposite to each other, the resin plate printing wheel (34) being mounted between the two printing and cutting installation plates (13) via a rotating shaft III (341), the two printing and cutting installation plates (13) being provided with a left-right moving hole I (14) for adjusting the left-right movement of the resin plate printing wheel (34), the rotating shaft III (341) being inserted into the left-right moving hole I (14); The left pricking wheel (41) is mounted between two printing cutter mounting plates (13) via a rotating shaft IV (411). The two printing cutter mounting plates (13) are provided with a left-right moving hole II (15) for adjusting the left pricking wheel (41) to move left and right. The rotating shaft IV (411) is inserted into the left-right moving hole II (15). The glue tank (21) and the ink tank (31) are both provided with a constant temperature device (211).

2. The cam gluing control mechanism used in a paper bag machine according to claim 1, characterized in that: The printing rubber auxiliary roller (23) is mounted between two gluing installation plates (11); rotating wheels (231) cooperating with the cam (24) are provided at both ends of the printing rubber auxiliary roller (23); vertical movement holes (12) for the printing rubber auxiliary roller (23) to move up and down are provided in the two gluing installation plates (11); and an elastic component (26) connected to the printing rubber auxiliary roller (23) is provided in the vertical movement holes (12).

3. The cam gluing control mechanism used in a paper bag machine according to claim 2, characterized in that: The cam (24) is mounted between two glue-mounted mounting plates (11) via a rotating shaft II (241). Two cams (24) are provided. The two cams (24) are respectively arranged at two ends of the rotating shaft II (241) and are matched and connected to the two rotating wheels (231).

4. The cam gluing control mechanism used in a paper bag machine according to claim 1, characterized in that: The gluing mechanism (2), the printing mechanism (3) and the cutting mechanism (4) are driven by belts or chains.

5. The cam gluing control mechanism used in a paper bag machine according to claim 1, characterized in that: The cam (24) is a cam (24) with a variable diameter.

Images