Line pressing paperboard folding pipe bonding mechanism
By designing a folding and bonding mechanism for creased cardboard, mechanized assembly line production of cardboard folding, gluing, and bonding was achieved, solving the problem of low automation in existing technologies, improving production efficiency, and reducing labor costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN CHIDENGKAI HARDWARE MASCH CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-19
AI Technical Summary
Existing cardboard tube folding machines have low automation, low production efficiency, and high labor costs.
Design a cardboard folding and bonding mechanism, including a folding mechanism, an M-shaped width limiting gate, a left top plate, a glue dispensing machine, a right top plate, and bonding and pressing rollers, to complete the folding, glue dispensing, and bonding process of cardboard through a mechanized assembly line.
It has increased the level of automation in production, reduced labor costs, and improved production efficiency.
Smart Images

Figure CN224256217U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of paperboard square tube machinery technology, specifically a folding and bonding mechanism for creased paperboard tubes. Background Technology
[0002] In paper packaging production, it is often necessary to produce cardboard tubes of various specifications according to the length and size of the products for packaging. Current cardboard tube folding machines have a low degree of automation, resulting in lower production efficiency and higher labor costs. Utility Model Content
[0003] The purpose of this invention is to provide a folding and bonding mechanism for creased cardboard to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a folding and bonding mechanism for creased cardboard, comprising a folding mechanism, an M-shaped width-limiting gate, a left top plate, a glue dispensing machine, a right top plate, and a bonding and pressing roller connected in sequence. The folding mechanism and the M-shaped width-limiting gate are responsible for folding and forming the creased cardboard and conveying it. The left top plate is responsible for forming the left top fold. The glue dispensing machine is responsible for applying glue. The right top plate is responsible for forming the right top fold. The bonding and pressing roller is responsible for pressing and bonding the top. The creased cardboard passes through the folding mechanism, the M-shaped width-limiting gate, the left top plate, the glue dispensing machine, the right top plate, and the bonding and pressing roller in sequence to complete the folding and bonding process.
[0005] The folding mechanism includes a folding motor, a folding belt shaft, a lower folding gear, a left folding pulley, a middle transmission pulley, a right folding pulley, an upper folding gear, a special-shaped pulley bracket, a first transmission pulley, a second transmission pulley, a third transmission pulley, a pressure wheel, a fourth transmission pulley, an upper belt, a lower belt, a left pulley, a right pulley, a left drive belt, and a right drive belt. The folding motor is connected to the folding belt shaft and sequentially connected and fixed to the lower folding gear, the left folding pulley, and the middle transmission pulley. The lower folding gear meshes with the upper folding gear. The upper folding gear shaft passes through the first transmission pulley and is located at the front of the special-shaped pulley bracket. The second transmission pulley is located in the middle of the special-shaped pulley bracket. The pressure wheel is located at the rear of the special-shaped pulley bracket. The third transmission pulley is located at the rear of the machine body. The fourth transmission pulley is located below the third transmission pulley. The upper belt drives the transmission around the first, second, and third transmission pulleys. The lower belt drives the transmission around the middle and fourth transmission pulleys. The left pulley has an embedded bearing and is located on the left side of the rear part of the M-shaped width-limiting gate process. The right pulley has an embedded bearing and is located on the right side of the rear part of the M-shaped width-limiting gate process. The left folding pulley and the left belt are driven by the left transmission belt. The right folding pulley and the right belt are driven by the right transmission belt. After the folding mechanism and the M-shaped width-limiting gate fold the edge of the creased cardboard, it is folded to the left top by the folding left top plate, glued by the glue dispensing machine, folded to the right top by the folding right top plate, and finally glued and pressed by the adhesive pressing wheel to complete the folding, glue dispensing, and pressing of the creased cardboard into a square tube.
[0006] The M-shaped width-limiting gate includes a top plate, side plates, and an N-shaped gate. The bottom sides of the top plate are respectively connected to the side plates, and the top of the N-shaped gate is connected to the center of the bottom of the top plate. The N-shaped gate has a gate-shaped space to meet the needs of the upper belt passing through. The N-shaped gate and the side plates on both sides form a gate-shaped space to meet the needs of the left and right drive belts passing through.
[0007] An upper connecting strip is provided between the first and third transmission pulleys. The upper connecting strip passes through the internal space of the N-shaped door. The first end of the upper connecting strip is close to the first transmission pulley and the bottom surface of the upper connecting strip is flush with the bottom surface of the first transmission pulley. The last end of the upper connecting strip is close to the third transmission pulley and the bottom surface of the upper connecting strip is flush with the bottom surface of the third transmission pulley.
[0008] The upper belt is provided with an upper belt cover, the first end of which abuts near the tail of the N-shaped door, and the tail end of which abuts near the third transmission belt pulley.
[0009] A lower connecting strip is provided directly below the upper connecting strip. The first end of the lower connecting strip is close to the middle transmission belt pulley and the top of the lower connecting strip is flush with the top surface of the transmission belt pulley. The last end of the lower connecting strip is close to the fourth transmission belt pulley and the top surface of the lower connecting strip is flush with the top surface of the fourth transmission belt pulley.
[0010] The left and right pulleys are respectively arranged in the middle of the lower connecting strip. A left strip and a right strip are respectively arranged between the left and right pulleys and the third transmission pulley. The left strip and the right strip are respectively placed on both sides of the upper belt cover. The left folding top plate is fixed to the front of the left strip, and the right folding top plate is fixed to the middle of the right strip and behind the dispensing machine process.
[0011] The adhesive pressing roller is located on the side of the left strip and at the rear end of the right top plate folding process, and is responsible for the adhesive pressing of the cardboard tube folding.
[0012] Compared with existing technologies, this utility model has a higher degree of automation, which improves production efficiency and reduces labor costs. Attached Figure Description
[0013] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model;
[0014] Figure 2 This is one of the main structural diagrams of the folding mechanism;
[0015] Figure 3 This is the second schematic diagram of the main structure of the folding mechanism;
[0016] Figure 4 for Figure 1 Enlarged view of a section in area B;
[0017] Figure 5 Exploded view of irregularly shaped pulley bracket and pulley assembly;
[0018] Figure 6 This is an exploded view of the main parts of this utility model;
[0019] Figure 7 for Figure 6 Enlarged view of a section in area C;
[0020] Figure 8 This is a schematic diagram of the main structure of the utility model;
[0021] Figure 9 for Figure 1 A schematic diagram of the AA section direction. Detailed Implementation
[0022] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings, but this is not intended to limit the utility model.
[0023] like Figures 1 to 9 As shown, a folding and bonding mechanism for creased cardboard includes a folding mechanism 100, an M-shaped width limiting gate 200, a left top plate 3, a glue dispensing machine 4, a right top plate 5, and a bonding and pressing roller 6 connected in sequence. The folding mechanism 100 and the M-shaped width limiting gate 200 are responsible for folding and forming the creased cardboard and conveying it. The left top plate 3 is responsible for forming the left top fold. The glue dispensing machine 4 is responsible for applying glue. The right top plate 5 is responsible for forming the right top fold. The bonding and pressing roller 6 is responsible for pressing and bonding the top. The creased cardboard passes through the folding mechanism 100, the M-shaped width limiting gate 200, the left top plate 3, the glue dispensing machine 4, the right top plate 5, and the bonding and pressing roller 6 in sequence to complete the folding and bonding process.
[0024] The folding mechanism 100 includes a folding motor 11, a folding belt shaft 12, a lower folding gear 13, a left folding pulley 14, a middle transmission pulley 15, a right folding pulley 16, an upper folding gear 17, a special-shaped pulley bracket 18, a first transmission pulley 19, a second transmission pulley 20, a third transmission pulley 21, a pressure wheel 22, a fourth transmission pulley 23, an upper belt 24, a lower belt 25, a left pulley 26, a right pulley 27, and a left drive belt 28. 8. The right drive belt 29, the folding motor 11, and the folding belt shaft 12 are sequentially connected and fixed to the lower folding gear 13, the left folding pulley 14, and the middle transmission pulley 15. The lower folding gear 13 meshes with the upper folding gear 17 for transmission. The shaft of the upper folding gear 17 passes through the first transmission pulley 19 and is located at the front of the irregular pulley bracket 18. The second transmission pulley 20 is located in the middle of the irregular pulley bracket 18. The pressure wheel 22 is located at the tail of the irregular pulley bracket 18. Figure 1 , Figure 2 As shown, the third transmission pulley 21 is located at the rear of the machine body, and the fourth transmission pulley 23 is located below the third transmission pulley 21, as shown. Figure 3 As shown, the upper belt 24 drives the transmission around the first transmission pulley 19, the second transmission pulley 20, and the third transmission pulley 21. The lower belt 25 drives the transmission around the middle transmission pulley 15 and the fourth transmission pulley 23. The left pulley 26 has an embedded bearing and is located on the left side of the rear part of the M-shaped width limiting gate 200 process. The right pulley 27 has an embedded bearing and is located on the right side of the rear part of the M-shaped width limiting gate 200 process. The left folding pulley 14 and the left pulley 26 are driven by the left transmission belt 28, and the right folding pulley 16 and the right pulley 27 are driven by the right transmission belt 29. After the folding mechanism 100 and the M-shaped width limiting gate 200 fold the edge of the creased cardboard, it is then folded by the left top plate 3, glued by the glue dispensing machine 4, folded by the right top plate 5, and finally glued and pressed by the bonding and pressing wheel 6 to complete the folding, glue dispensing, and pressing of the creased cardboard into a square tube.
[0025] like Figure 4 As shown, the M-shaped width-limiting gate 200 includes a top plate 2001, side plates 2002, and an N-shaped gate 2003. The bottom sides of the top plate 2001 are respectively connected to the side plates 2002. The top of the N-shaped gate 2003 is connected to the center of the bottom of the top plate 2001. The N-shaped gate 2003 has a gate-shaped space to meet the needs of the upper belt 24 passing through. The N-shaped gate 2003 and the side plates 2002 on both sides form a gate-shaped space to meet the needs of the left drive belt 28 and the right drive belt 29 passing through.
[0026] like Figure 6 , Figure 7 , Figure 9 As shown, an upper connecting strip 2004 is provided between the first transmission pulley 19 and the third transmission pulley 21. The upper connecting strip 2004 passes through the internal space of the N-shaped door 2003. The first end of the upper connecting strip 2004 is close to the first transmission pulley 19 and the bottom surface of the upper connecting strip 2004 is flush with the bottom surface of the first transmission pulley 19. The tail end of the upper connecting strip 2004 is close to the third transmission pulley 21 and the bottom surface of the upper connecting strip 2004 is flush with the bottom surface of the third transmission pulley 21.
[0027] The upper belt 24 is provided with an upper belt cover 2005. The first end of the upper belt cover 2005 is close to the tail of the N-shaped door 2003, and the tail end of the upper belt cover 2005 is close to the third transmission belt pulley 21.
[0028] A lower connecting strip 2006 is provided directly below the upper connecting strip 2004. The first end of the lower connecting strip 2006 is close to the middle conveyor belt pulley 15 and the top of the lower connecting strip 2006 is flush with the top surface of the conveyor belt pulley 15. The tail end of the lower connecting strip 2006 is close to the fourth transmission belt pulley 23 and the top surface of the lower connecting strip 2006 is flush with the top surface of the fourth transmission belt pulley 23.
[0029] like Figure 6 , Figure 8 As shown, the left pulley 26 and the right pulley 27 are respectively arranged in the middle of the lower connecting strip 2006. The left strip 2007 and the right strip 2008 are respectively arranged between the left pulley 26, the right pulley 27 and the third transmission pulley 21. The left strip 2007 and the right strip 2008 are respectively placed on both sides of the upper belt cover 2005. The left top plate 3 is fixed to the front of the left strip 2007, and the right top plate 5 is fixed to the middle of the right strip 2008 and is behind the dispensing machine 4 process.
[0030] like Figure 1 As shown, the adhesive pressing roller 6 is located on the side of the left strip 2007 and at the rear end of the right top plate 5 folding process, and is responsible for the adhesive pressing of the cardboard tube folding.
[0031] Working principle of this utility model:
[0032] When the crease cardboard enters the folding mechanism 100, the folding motor 11 rotates, driving the lower folding gear 13, left folding pulley 14, middle conveyor pulley 15, and right folding pulley 16 to rotate synchronously. The upper folding gear 17, meshing with the lower folding gear 13, also rotates simultaneously, synchronously driving the first conveyor pulley 19 to rotate. At this time, the left folding pulley 14 and the left pulley 26 are driven in opposite directions by the left transmission belt 28, and the crease cardboard gradually changes from horizontal to vertical along the crease to complete the left edge removal. The right folding pulley 16 and the right pulley 27 are driven in opposite directions by the right transmission belt 28. Driven by the 9-fold change, the crease cardboard gradually changes from the horizontal direction to the vertical direction along the crease to complete the right side removal. The first transmission pulley 19, the second transmission pulley 20, and the third transmission pulley 21 are driven by the upper belt 24, while the middle transmission pulley 15 and the fourth transmission pulley 23 are driven by the lower belt 25. At this time, the left and right folded edges of the crease cardboard enter the left and right side spaces formed by the N-shaped door 2003 and the side plate 2002, respectively. The tubular bottom surface of the crease cardboard moves towards the fourth transmission pulley 23 at the tail end under the clamping action of the upper belt 24 and the lower belt 25. When the left fold of the crease cardboard passes the left top plate 3, the height of the space of the left top plate 3 gradually changes from high to low. The vertical left fold is folded along the fold again to form the left top surface. The top of the left top surface enters the working interface of the glue dispensing machine 4 for glue application. After completion, it continues to move forward. When the right fold of the crease cardboard passes the right top plate 5, the height of the space of the right top plate 5 gradually changes from high to low. The vertical right fold is folded along the fold again to form the right top surface and cover the left top surface. Afterward, it continues to move forward and is glued and pressed by the adhesive pressing roller 6 to complete the entire folding, gluing, and pressing process.
[0033] Compared with existing technologies, this utility model has a higher degree of automation, which improves production efficiency and reduces labor costs.
[0034] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations to these embodiments without departing from the principles and spirit of this utility model still fall within the protection scope of this utility model.
Claims
1. A folding and bonding mechanism for creased cardboard, characterized in that, The system includes a folding mechanism (100), an M-shaped width limiting gate (200), a left top plate (3), a glue dispensing machine (4), a right top plate (5), and an adhesive pressing roller (6) connected in sequence. The folding mechanism (100) and the M-shaped width limiting gate (200) are responsible for folding and conveying the creased cardboard. The left top plate (3) is responsible for folding the left top. The glue dispensing machine (4) is responsible for applying glue. The right top plate (5) is responsible for folding the right top. The adhesive pressing roller (6) is responsible for pressing and bonding the top.
2. The crease-pressed cardboard tube folding and bonding mechanism according to claim 1, characterized in that, The folding mechanism (100) includes a folding motor (11), a folding belt shaft (12), a lower folding gear (13), a left folding pulley (14), a middle transmission pulley (15), a right folding pulley (16), an upper folding gear (17), a special-shaped pulley bracket (18), a first transmission pulley (19), a second transmission pulley (20), a third transmission pulley (21), a pressure wheel (22), a fourth transmission pulley (23), an upper belt (24), a lower belt (25), and a left belt. Wheel (26), right pulley (27), left drive belt (28), right drive belt (29), the folding motor (11) is connected to the folding belt shaft (12) and is sequentially connected and fixed to the lower folding gear (13), left folding pulley (14), and middle transmission pulley (15). The lower folding gear (13) meshes with the upper folding gear (17) for transmission. The shaft of the upper folding gear (17) passes through the first transmission pulley (19) and is located at the front of the irregular pulley bracket (18). The second transmission pulley (20) is located in the middle of the irregular pulley bracket (18), the pressure wheel (22) is located at the tail of the irregular pulley bracket (18), the third transmission pulley (21) is located at the tail of the machine body, the fourth transmission pulley (23) is located below the third transmission pulley (21), the upper belt (24) drives the first transmission pulley (19), the second transmission pulley (20), and the third transmission pulley (21), and the lower belt (25) drives the first transmission pulley (19), the second transmission pulley (20), and the third transmission pulley (21). The middle transmission pulley (15) and the fourth transmission pulley (23) are driven by belts. The left pulley (26) has an embedded bearing and is located on the left side of the rear part of the M-shaped width limiting gate (200) process. The right pulley (27) has an embedded bearing and is located on the right side of the rear part of the M-shaped width limiting gate (200) process. The left folded edge pulley (14) and the left pulley (26) are driven by the left transmission belt (28). The right folded edge pulley (16) and the right pulley (27) are driven by the right transmission belt (29).
3. The crease-pressed cardboard tube-folding and bonding mechanism according to claim 2, characterized in that, The M-shaped width-limiting gate (200) includes a top plate (2001), side plates (2002), and an N-shaped gate (2003). The bottom sides of the top plate (2001) are respectively connected to the side plates (2002), and the top of the N-shaped gate (2003) is connected to the center of the bottom of the top plate (2001). The N-shaped gate (2003) has a gate-shaped space, and the N-shaped gate (2003) and the side plates (2002) on both sides form a gate-shaped space.
4. The crease-pressed cardboard tube-folding and bonding mechanism according to claim 3, characterized in that, An upper connecting strip (2004) is provided between the first transmission pulley (19) and the third transmission pulley (21). The upper connecting strip (2004) passes through the internal space of the N-shaped door (2003). The first end of the upper connecting strip (2004) is close to the first transmission pulley (19) and the bottom surface of the upper connecting strip (2004) is flush with the bottom surface of the first transmission pulley (19). The tail end of the upper connecting strip (2004) is close to the third transmission pulley (21) and the bottom surface of the upper connecting strip (2004) is flush with the bottom surface of the third transmission pulley (21).
5. The crease-pressed cardboard tube-folding and bonding mechanism according to claim 4, characterized in that, The upper belt (24) is provided with an upper belt cover (2005), the first end of the upper belt cover (2005) is close to the tail of the N-shaped door (2003), and the tail end of the upper belt cover (2005) is close to the third transmission pulley (21).
6. The crease-pressed cardboard tube-folding and bonding mechanism according to claim 5, characterized in that, A lower connecting strip (2006) is provided directly below the upper connecting strip (2004). The first end of the lower connecting strip (2006) is close to the middle transmission pulley (15), and the top of the lower connecting strip (2006) is flush with the top surface of the transmission pulley (15). The tail end of the lower connecting strip (2006) is close to the fourth transmission pulley (23), and the top surface of the lower connecting strip (2006) is flush with the top surface of the fourth transmission pulley (23).
7. The crease-pressed cardboard tube-folding and bonding mechanism according to claim 6, characterized in that, The left pulley (26) and right pulley (27) are respectively arranged in the middle of the lower connecting strip (2006). The left pulley (26), right pulley (27) and the third transmission pulley (21) are respectively provided with a left strip (2007) and a right strip (2008). The left strip (2007) and right strip (2008) are respectively placed on both sides of the upper belt cover (2005). The left folding top plate (3) is fixed to the front of the left strip (2007). The right folding top plate (5) is fixed to the middle of the right strip (2008) and behind the dispensing machine (4) process.