Automatic Glue Coating Device for Paper Bag Machine

Abstract

The present invention discloses an automatic glue coating device for a paper bag making machine. It includes a drum device having a drum, a glue coating device having a glue coating roller and a glue coating plate cooperating with the drum device, a glue transferring roller device having a glue transferring roller cooperating with the glue coating roller device, and a glue amount control device cooperating with the glue transferring roller device. The glue transferring roller of the glue transferring device contacts the glue coating plate of the glue coating device so as to transfer the glue to the glue coating plate. The drum of the drum device can convey the paper bag to the glue coating roller of the glue coating device and the glue coating plate evenly coats the glue on the bottom of the paper bag. The glue amount control device and the glue transferring device are installed on the same guide seat and can move relatively to the glue coating roller synchronously to adjust the glue pressure. The advantages are: it is beneficial to improve the uniformity of glue coating, and can also avoid the problem of glue splashing during the glue coating process; achieve the purpose of controlling the glue amount and solve the problem of glue splashing during the glue output process; ensure that the glue coating working position is accurate and unchanged, and guarantee the reliability of the work.

Description

Technical Field

[0001] The present invention relates to a paper bag making machine, specifically an automatic glue coating device for a paper bag making machine. Background Art

[0002] Nowadays, the consumption of paper bags in the market is increasing. The production of paper bags has achieved large-scale machine production. To ensure the quality of paper bag production, during the paper bag production process, the requirements for gluing the bottom are getting higher and higher. At the same time, with the high-speed mechanized production method, the bag-making speed is getting faster and faster. However, the existing conventional paper bag machines generally adopt a transmission method of two glue transfer rollers meshing. The glue rollers are in direct contact with the glue over a large area, unable to effectively control the glue coating amount, and even less able to effectively adjust the glue coating process. Therefore, during this production process, it is very easy to have the problem of glue splashing. At the same time, the uniformity of glue coating during the production process cannot be effectively controlled, which seriously affects the output and quality of paper bag production. In addition, the width of the glue cannot be controlled. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an automatic glue coating device for a paper bag making machine that can not only produce paper bags at high speed without glue splashing, but also has uniform glue coating, thus effectively ensuring the quality and output of paper bags.

[0004] To solve the above technical problem, the automatic glue coating device for a paper bag making machine of the present invention includes a drum device having a drum, a glue coating device having a glue coating roller and a glue coating plate cooperating with the drum device, a glue transfer roller device having a glue transfer roller cooperating with the glue coating roller device, and a glue amount control device cooperating with the glue transfer roller device. The glue transfer roller of the transfer device contacts the glue coating plate of the glue coating device so as to transfer the glue to the glue coating plate. At the same time, the drum of the drum device can convey the paper bag to the glue coating roller of the glue coating device and the glue coating plate evenly coats the glue on the bottom of the paper bag. The glue amount control device and the transfer device are installed on the same guide base and can synchronously move relative to the glue coating roller to adjust the glue pressure.

[0005] The glue amount control device includes a fixed rod, a fixed plate installed on the fixed rod, a glue amount control plate located above the fixed plate, and an adjustment control component for moving the glue amount control plate relative to the fixed plate to achieve glue amount control.

[0006] The adjustment control component includes a compression spring seat installed on the fixed plate, an adjustment seat installed on the fixed plate and located on the opposite side of the compression spring seat, and an adjustment screw screwed on the adjustment seat and cooperating with the glue amount control plate. A compression spring is connected between the compression spring seat and the glue amount control plate. Through the adjustment of the adjustment screw and the compression spring, the glue amount control plate moves smoothly on the fixed plate to achieve the purpose of controlling the glue amount.

[0007] The glue applying device further includes a fixed seat, an eccentric sleeve installed in the fixed seat, and a glue applying roller shaft rotatably installed through the eccentric sleeve. One end of the glue applying roller shaft extends out of one side of the eccentric sleeve and is fixedly installed with a glue applying roller. The other end of the glue applying roller shaft extends out of the other side of the eccentric sleeve and is connected to a cylinder through a cylinder connecting plate. By driving the cylinder to pull the eccentric sleeve to act, the glue applying roller shaft is driven to deviate.

[0008] The drum device also has drum teeth that rotate synchronously with the drum. Glue applying transmission teeth meshing with the drum teeth are arranged on the glue applying roller shaft of the glue applying device. Through the meshing of the drum gear and the glue applying transmission teeth, the paper bag can be conveyed from the drum of the drum device to the glue applying roller of the glue applying device.

[0009] The glue conveying roller device further includes a transmission shaft for installing the glue conveying roller, a transmission gear and a transition gear respectively installed on the transmission shaft through one-way clutches, a constant-speed motor installed beside the transition gear through a bracket, and a motor gear installed on the output shaft of the constant-speed motor. The motor gear meshes with the transition gear, and the glue conveying transmission gear meshes with the glue applying transmission teeth.

[0010] An upper adjusting support rod and a lower adjusting support rod are respectively arranged above and below the side of the glue applying roller. The gap between the glue applying plate and the drum can be controlled through the lower adjusting support rod, and the glue conveying transmission gear and the glue applying transmission teeth can be kept in a meshing state through the upper adjusting support rod.

[0011] The guide seat is connected and installed on the main wallboard through a linear slide rail, and the fixed seat is installed on the main wallboard, so that the distance between the glue conveying roller and the glue applying plate can be adjusted.

[0012] The glue amount control device further includes two of the baffle plates located above the fixed plate and a leaf spring seat installed on the fixed plate through a fastener and located on one side of the adjusting seat. A guide groove is arranged at the upper part of the baffle plate, and a leaf spring inserted into the guide groove is fixedly installed on the leaf spring seat. Moving the leaf spring seat and the baffle plate can control the length of the glue applying surface of the glue conveying roller.

[0013] A glue receiving tray is arranged below the glue conveying roller. A glue pipe for connecting a glue pump and a sensor for controlling the amount of glue contained are arranged above the two baffle plates.

[0014] Both the glue amount control plate and the baffle plate are made of non-metallic wear-resistant materials.

[0015] The advantages of the present invention are as follows:

[0016] (1) By means of the set glue amount control device and the glue transfer device installed on the same guide base as the glue amount control device, it is possible to synchronously move both relative to the glue coating roller to adjust the magnitude of the glue coating pressure. The reasonable control of the pressure magnitude is conducive to improving the uniformity of glue coating, and at the same time, it can also avoid the problem of glue splashing during the glue coating process.

[0017] (2) By means of the set glue amount control plate and the adjustment control assembly for moving the glue amount control plate relative to the fixed plate to achieve glue amount control, it is possible to make the glue amount control plate move smoothly on the fixed plate and reliably control the glue output amount (i.e., the thickness of the output glue), achieve the purpose of controlling the glue amount, and solve the problem of glue splashing during the glue output process.

[0018] (3) The gap between the glue coating plate and the drum can be controlled by the set lower adjustment support rod, and the glue transfer drive gear and the glue coating drive gear can be kept in a meshing state all the time by the set upper adjustment support rod, ensuring that the glue coating working position is accurately unchanged and guaranteeing the reliability of the work.

[0019] (4) By means of the two glue retaining plates of the glue amount control device and the leaf springs cooperating with the two baffles, it is possible to control the glue width of the glue transfer roller and prevent the glue from splashing out on the glue transfer roller.

[0020] (5) By arranging a glue pipe for connecting the glue pump and a sensor for controlling the glue holding amount above the two glue retaining plates, the purpose of automatic glue addition and high-speed continuous operation can be achieved, improving the production output.

[0021] (6) By means of the drive gear, intermediate gear, constant-speed motor and motor gear of the glue transfer roller device, it is possible to achieve that when the drum is not driving, the constant-speed motor works to drive the glue transfer roller through the meshing of the motor gear and the intermediate gear, realizing glue leveling and preventing the glue from drying up on the glue transfer roller, which may affect the subsequent startup. Brief Description of the Drawings

[0022] Figure 1 It is the front view structural schematic diagram of the automatic glue coating device of the paper bag making machine of the present invention;

[0023] Figure 2 It is Figure 1 the enlarged structural schematic diagram at A of

[0024] Figure 3 It is Figure 1 the enlarged structural schematic diagram at B of

[0025] Figure 4 It is the top view structural schematic diagram of the automatic glue coating device of the paper bag making machine of the present invention;

[0026] Figure 5 It is the structural schematic diagram of the glue retaining plate in the present invention;

[0027] Figure 6 It is a top view structural schematic diagram of the glue amount control board in the present invention. Detailed implementation manners

[0028] The following further elaborates on the automatic glue coating device of the paper bag making machine of the present invention in conjunction with the accompanying drawings and specific implementation manners.

[0029] As shown in the figure, the automatic glue coating device of the paper bag making machine of the present invention includes a drum device 2, a glue coating device 5 cooperating with the drum device, a glue transfer roller device 7 cooperating with the glue coating roller device, and a glue amount control device 8 cooperating with the glue transfer roller device. As can be seen from the figure, the said glue coating device 5 includes a fixed seat 16, an eccentric sleeve 17 installed in the fixed seat, and a glue coating roller shaft 18 rotatably installed through the eccentric sleeve. One end of the glue coating roller shaft 18 extends out of one side of the eccentric sleeve and is installed with a glue coating roller 3. A glue coating plate 4 is fixedly installed on the glue coating roller 3. The other end of the glue coating roller shaft 18 extends out of the other side of the eccentric sleeve and is connected with a cylinder 20 through a cylinder connecting plate 19. During installation, the glue coating roller 3 and a locking block 39 are assembled and installed at one end of the glue coating roller shaft 18. The glue coating roller shaft 18 is assembled and installed on the eccentric sleeve 17 through a bearing, a first gland 40, and a second gland 41 for driving. The cylinder connecting plate 19 is connected with the second gland 41. The first gland 40 controls the axial position of the eccentric sleeve 17 in the fixed seat 16. The cylinder connecting plate 19 is connected with the cylinder 20 through a joint. The other end of the cylinder 20 is fixed on the main wall plate 29. By driving the cylinder 20, the eccentric sleeve 17 is pulled to act, thereby driving the glue coating roller shaft 18 to deviate;The said drum device 2 includes a drum shaft, a drum 1 mounted on the drum shaft (equipped with conventional fixtures, claws and other components), and a drum gear capable of driving the drum to rotate synchronously. The drum gear is rotatably mounted on the main wallboard with bearings. A glue application transmission gear 21 meshing with the drum teeth is also provided on the glue application roller shaft 18 of the glue application device 5. Through the meshing of the drum gear and the glue application transmission gear 21, and the claws biting on the drum for transmission, the paper bag can be conveyed from the drum 1 of the drum device 2 to the glue application position of the glue application roller 3 of the glue application device 5. The said glue transmission roller device 7 includes a glue transmission roller 6, a transmission shaft 22 for mounting the glue transmission roller 6, a transmission gear 23 mounted on the transmission shaft through a first one-way clutch 36, a transition gear 24 (limited by a fixing ring 45) mounted on the transmission shaft through a second one-way clutch 37, a uniform speed motor 25 mounted beside the transition gear through a bracket 44, and a motor gear 46 mounted on the output shaft of the uniform speed motor 25. The motor gear 46 meshes with the transition gear 24, and the glue transmission gear 23 meshes with the glue application transmission gear 21 to drive the glue transmission roller 22 to rotate. During use, when the glue application transmission gear 21 rotates and drives the transmission gear 23 to rotate under the action of the first one-way clutch 36, the transition gear 24 does not rotate under the action of the second one-way clutch 37. When the drum does not rotate, the uniform speed motor 25 works and drives the glue transmission roller 6 to rotate through the meshing of the motor gear 46 and the transition gear 24, realizing uniform glue application and preventing the glue from drying up on the glue transmission roller, which affects subsequent machine startup. The glue transmission roller 22 is coated with uniform glue. Thus, through the contact between the glue transmission roller 6 of the glue transmission device 7 and the glue application plate 4 of the glue application device 5, the glue can be transferred to the glue application plate. At the same time, the drum 1 of the drum device 2 can convey the paper bag to the glue application roller 3 of the glue application device 5, and the glue application plate 4 evenly coats the glue on the bottom of the paper bag. As can be seen from the figure, the said glue transmission roller 6 is driven by a first bearing seat 45 and a second bearing seat 46 with built-in bearings and is assembled and installed on the guide seat 30. The said glue amount control device 8 includes a fixed rod 9, a fixed plate 10 mounted on the fixed rod 9, a glue amount control plate 11 located above the fixed plate 10, and an adjustment control component for moving the glue amount control plate 11 relative to the fixed plate 10 to control the glue amount. The glue amount control device 8 and the glue transmission device 7 are installed on the same guide seat 30. Specifically, the fixed rod 9 is installed on the guide seat 30 through a locking and fixing block 47. The guide seat 30 is connected and installed on the main wallboard 29 through a linear slide rail 28. The fixed seat 16 is installed on the main wallboard 29 and can be adjusted and moved, so as to adjust the distance between the glue transmission roller 6 and the glue application plate 4, and make the glue amount control device 8 and the glue transmission device 7 move synchronously relative to the glue application roller 3 to realize glue pressure adjustment.;

[0030] Further, the adjustment and control assembly includes a compression spring seat 12 mounted on the fixed plate 10, an adjustment seat 13 mounted on the fixed plate and on the opposite side of the compression spring seat 12, and an adjustment screw 14 screwed onto the adjustment seat 13 and cooperating with the glue amount control plate 11. A lining plate 47 is fixedly installed on the glue amount control plate 11. The adjustment screw 14 contacts the lining plate. A compression spring 15 is connected between the compression spring seat 12 and the glue amount control plate 11. By adjusting the adjustment screw 14 and the compression spring 15, the glue amount control plate 11 moves smoothly on the fixed plate 10 to achieve the purpose of controlling the glue amount.

[0031] Still further, an upper adjustment support rod 26 and a lower adjustment support rod 27 can be respectively arranged above and below the side of the glue application roller 3. Among them, the upper adjustment support rod 26 and the lower adjustment support rod 27 are respectively fixed on the wall panel 29 and are located above and below the cylinder connection plate 19. The swinging position of the cylinder connection plate 19 is controlled by screws. The gap between the glue application plate 4 and the drum 1 can be controlled through the lower adjustment support rod 27, and the glue transfer transmission gear 23 and the glue application transmission gear 21 can be kept in an engaged state all the time through the upper adjustment support rod 26, that is: the gear engagement is controlled by the upper adjustment support rod and does not get out of gear. When the glue application device does not apply glue, the cylinder 20 pulls up the glue application roller 3, and the glue application plate 4 is driven without contacting the drum 1 and the glue transfer roller 6, and the glue application transmission gear 21 and the drum gear and the transmission gear 23 cannot get out of gear, ensuring that the glue application working position is accurately unchanged. The glue application transmission gear 21 is installed at one end of the glue application roller shaft 18 with a key and a pressing plate 42 to drive the rotation of the glue application roller device.

[0032] Furthermore, the glue amount control device 8 further includes two glue blocking plates 38 located above the glue amount control plate 11 and a leaf spring seat 31 installed on the fixed plate 10 through fasteners and located on one side of the adjusting seat 13. A guide groove is provided in the upper part of the glue blocking plate 38, and a leaf spring 32 inserted into the guide groove is fixedly installed on the leaf spring seat 31. The glue blocking plate 38 has an arc surface 48 in contact with the glue transfer roller and an inclined surface 49 in contact with the glue amount control plate. The chamfer at the upper end of the glue blocking plate 38 serves to scrape off the excess glue. By moving the leaf spring seat and the glue blocking plate, the length of the glue application surface on the glue transfer roller 6 can be controlled. Thus, through the combination of a pair of glue blocking plates 38, the glue amount control plate 11 and the glue transfer roller 6, the glue is blocked in the middle. This pair of glue blocking plates 38 can move axially and be adjusted according to the width of the paper bag surface, generally not exceeding the width of the paper bag surface, to control the glue width of the glue transfer roller 6 and prevent the glue from being thrown out on the glue transfer roller 6. The movement of the glue amount control plate 11 can control the coating thickness of the glue on the glue transfer roller 6. Thus, the glue amount can be adjusted according to the actual situation of the paper bag. Among them, both the glue amount control plate 11 and the glue blocking plates 38 are made of non-metallic wear-resistant materials to ensure that no scratching or pulling occurs when contacting the glue transfer roller; a glue receiving tray 33 is provided below the glue transfer roller 6 to prevent the glue from dripping. Above the two glue blocking plates 38, there are a glue pipe 34 for connecting the glue pump and a sensor 35 for controlling the glue holding amount. Specifically, a support member is fixedly installed on the main wallboard, and the glue pipe 34 and the sensor 35 are installed on the bracket 417. Thus, the glue holding amount can be controlled by using the sensor, that is, when the sensor 35 detects that the glue is lower than the control position, the glue pump works automatically to add glue. On the contrary, when the sensor 35 detects that the glue is added to the set position, the glue pump stops working.

Claims

1. An automatic glue - applying device for a paper - bag making machine, characterized in that: It includes a drum device (2) having a drum (1), a gluing device (5) cooperating with the drum device and having a gluing roller (3) and a gluing plate (4), a glue transfer device (7) cooperating with the gluing device and having a glue transfer roller (6), and a glue amount control device (8) cooperating with the glue transfer device. The glue transfer roller (6) of the glue transfer device (7) contacts the gluing plate (4) of the gluing device (5) so as to be able to transfer glue to the gluing plate. At the same time, the drum (1) of the drum device (2) can convey the paper bag to the gluing roller (3) of the gluing device (5), and the gluing plate (4) evenly coats the glue on the bottom of the paper bag. The glue amount control device (8) and the glue transfer device (7) are installed on the same guide seat and can move synchronously relative to the gluing roller (3) to adjust the glue pressure; The glue amount control device (8) includes a fixed rod (9), a fixed plate (10) installed on the fixed rod (9), a glue amount control plate (11) located above the fixed plate (10), and an adjustment control component for making the glue amount control plate (11) move relative to the fixed plate (10) to achieve glue amount control. The adjustment control component includes a compression spring seat (12) installed on the fixed plate (10), an adjustment seat (13) installed on the fixed plate and located on the opposite side of the compression spring seat (12), and an adjustment screw (14) screwed on the adjustment seat (13) and cooperating with the glue amount control plate (11). A compression spring (15) is connected between the compression spring seat (12) and the glue amount control plate (11). By adjusting the adjustment screw (14) and the compression spring (15), the glue amount control plate (11) moves smoothly on the fixed plate (10) to achieve the purpose of controlling the glue amount.

2. The automatic glue coating device of the paper bag making machine according to claim 1, wherein: The gluing device (5) further includes a fixed seat (16), an eccentric sleeve (17) installed in the fixed seat, and a gluing roller shaft (18) rotatably installed through the eccentric sleeve. One end of the gluing roller shaft (18) extends out of one side of the eccentric sleeve and is fixedly installed with the gluing roller (3). The other end of the gluing roller shaft (18) extends out of the other side of the eccentric sleeve and is connected with a cylinder (20) through a cylinder connecting plate (19). By driving the cylinder (20), the eccentric sleeve (17) is pulled to act, thereby driving the gluing roller shaft (18) to deviate.

3. The automatic glue coating device for a paper bag making machine according to claim 1 or 2, characterized in that: The drum device (2) further has a drum gear that rotates synchronously with the drum. A gluing transmission gear (21) meshing with the drum gear is provided on the gluing roller shaft (18) of the gluing device (5). Through the meshing of the drum gear and the gluing transmission gear (21), the paper bag can be conveyed from the drum (1) of the drum device (2) to the gluing roller (3) of the gluing device (5).

4. The automatic glue coating device for a paper bag making machine according to claim 3, characterized in that: The glue transfer device (7) further includes a transmission shaft (22) for mounting the glue transfer roller (6), a glue transfer driving gear (23) and an intermediate gear (24) respectively mounted on the transmission shaft through one-way clutches, a constant-speed motor (25) mounted beside the intermediate gear through a bracket, and a motor gear (46) mounted on the output shaft of the constant-speed motor (25). The motor gear (46) meshes with the intermediate gear (24), and the glue transfer driving gear (23) meshes with the glue application driving gear (21).

5. The automatic glue coating device for a paper bag making machine according to claim 1, 2 or 4, characterized in that: Upper and lower adjusting support rods (26) and (27) are respectively arranged beside the glue application roller (3). The gap between the glue application plate (4) and the drum (1) can be controlled through the lower adjusting support rod (27), and the glue transfer driving gear (23) and the glue application driving gear (21) can be kept in a meshing state through the upper adjusting support rod (26).

6. The automatic glue coating device for a paper bag making machine according to claim 2, wherein: The guide seat (30) is connected and mounted on the main wallboard (29) through a linear slide rail (28), and the fixed seat (16) is mounted on the main wallboard (29), so that the distance between the glue transfer roller (6) and the glue application plate (4) can be adjusted.

7. The automatic glue coating device for a paper bag making machine according to claim 1, 2, 4 or 6, characterized in that: The glue amount control device (8) further includes two glue blocking plates (38) located above the glue amount control plate (11), and a leaf spring seat (31) mounted on the fixing plate (10) through a fastener and located on one side of the adjusting seat (13). A guide groove is provided in the upper part of the glue blocking plate (38), and a leaf spring (32) inserted into the guide groove is fixedly mounted on the leaf spring seat (31). Moving the leaf spring seat and the glue blocking plate can control the length of the glue application surface of the glue transfer roller (6).

8. The automatic glue coating device for a paper bag making machine according to claim 7, wherein: A glue receiving tray (33) is arranged below the glue transfer roller (6), and a glue pipe (34) for connecting a glue pump and a sensor (35) for controlling the glue discharge amount are arranged above the two glue blocking plates (38).

9. The automatic glue coating device for a paper bag making machine according to claim 8, characterized in that: Both the glue amount control plate and the glue blocking plate are made of non-metallic wear-resistant materials.

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