A cardboard creasing and tube-folding machine

Abstract

This utility model belongs to the field of paperboard tube machinery technology, and discloses a paperboard creasing and folding machine, including a creasing and punching mechanism, a folding and bonding mechanism, a cutting mechanism, and a diagonal flattening mechanism. The creasing and punching mechanism and the folding and bonding mechanism are connected in sequence. The cutting mechanism is connected after the folding and bonding mechanism, and the diagonal flattening mechanism is connected after the cutting mechanism. The creasing and punching mechanism is responsible for creasing and punching the paperboard, the folding and bonding mechanism is responsible for folding and bonding the creasing and punching paperboard, the cutting mechanism is responsible for cutting the paper tube, and the diagonal flattening mechanism is responsible for flattening the paper tube. The paperboard completes the creasing and punching, folding and bonding, diagonal flattening, and cutting processes through the creasing and punching mechanism, the folding and bonding mechanism, and the cutting mechanism. This utility model has a high degree of automation, improves production efficiency, and reduces labor costs.

Description

Technical Field

[0001] This utility model relates to the field of paperboard square tube machinery technology, specifically a paperboard creasing and tube folding machine. 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 cardboard creasing and tube-folding machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a cardboard crease and tube folding machine, comprising a crease and punching mechanism, a tube folding and bonding mechanism, a cutting mechanism, and a diagonal flattening mechanism. The crease and punching mechanism and the tube folding and bonding mechanism are sequentially connected. The cutting mechanism is connected after the tube folding and bonding mechanism, and the diagonal flattening mechanism is connected after the cutting mechanism. The crease and punching mechanism is responsible for crease and punching the cardboard. The tube folding and bonding mechanism is responsible for folding and bonding the cardboard after crease and punching. The cutting mechanism is responsible for cutting the paper tube. The diagonal flattening mechanism is responsible for flattening the paper tube. The tube folding and bonding mechanism includes folding edges sequentially connected in each step. The system includes a folding mechanism, an M-shaped width-limiting gate, a left-folding top plate, a glue dispensing machine, a right-folding top plate, and an adhesive pressing roller. The folding mechanism and M-shaped width-limiting gate are responsible for folding and conveying the creased cardboard. The left-folding top plate is responsible for forming the left top fold. The glue dispensing machine is responsible for applying glue. The right-folding top plate is responsible for forming the right top fold. The adhesive pressing roller is responsible for pressing and bonding the top. The creased cardboard passes through the folding mechanism, M-shaped width-limiting gate, left-folding top plate, glue dispensing machine, right-folding top plate, and adhesive pressing roller in sequence to complete the tube-folding and bonding process. The cardboard passes through the creased punching mechanism, tube-folding and bonding mechanism, diagonal flattening mechanism, and cutting mechanism to complete the creased punching, tube-folding and bonding, diagonal flattening, and cutting processes.

[0005] The folding mechanism includes a folding motor, a folding belt shaft, a lower folding gear, a left folding pulley, a middle conveyor 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 folding belt, a lower folding 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 conveyor 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 folding belt drives the first, second, and third transmission pulleys. The lower folding belt drives the middle and fourth transmission pulleys. The left pulley has an embedded bearing and is located on the left side of the rear 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 of the M-shaped width-limiting gate process. The left folding pulley and the left belt are driven by the left transmission belt, and 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 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 two 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 need for the belt to pass through the folded edge. The N-shaped gate and the side plates on both sides form a gate-shaped space to meet the need for the left and right drive belts to pass through.

[0007] An upper connecting strip is provided between the first and third transmission pulleys. The upper connecting strip passes through the N-shaped doorway space. 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 folded edge upper belt is provided with a folded edge upper belt cover, the first end of the folded edge upper belt cover abuts close to the tail of the N-shaped door, and the tail end of the folded edge upper belt cover abuts close to 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 conveyor belt pulley and the top of the lower connecting strip is flush with the top surface of the middle conveyor belt pulley. The last end of the lower connecting strip is close to the fourth conveyor belt pulley and the top surface of the lower connecting strip is flush with the top surface of the fourth conveyor 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 belt cover on the folded edge. The left fold top plate is fixed to the front of the left strip, and the right fold 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] The diagonal flattening mechanism includes a base plate, a vertical plate, a flattening motor, a first side plate, a second side plate, an upper wide-mouth pulley, a lower wide-mouth pulley, an upper narrow-mouth pulley, a lower narrow-mouth pulley, an upper narrow-mouth gear, a lower narrow-mouth gear, an upper flattening belt, and a lower flattening belt. The vertical plate is connected to the base plate. The flattening motor is fixed to a flattening motor mounting plate on the vertical plate. The vertical plate has a square through hole, and the first side plate and the second side plate are arranged on opposite sides of the square through hole. The upper wide-mouth pulley, the lower wide-mouth pulley, the upper narrow-mouth pulley, and the lower narrow-mouth pulley are arranged inside the first side plate and the second side plate. The pulley shaft is connected to the output shaft of the flattening motor. The upper narrow-mouth pulley shaft is fixedly connected to the upper narrow-mouth gear, and the lower narrow-mouth pulley is fixedly connected to the lower narrow-mouth gear. The upper narrow-mouth gear and the lower narrow-mouth gear mesh and move together. The upper wide-mouth pulley and the upper narrow-mouth pulley are driven by the flattening upper belt, and the lower wide-mouth pulley and the lower narrow-mouth pulley are driven by the flattening lower belt. The cardboard square tube enters through the wide-mouth belt space formed by the upper wide-mouth pulley and the lower wide-mouth pulley, and flows out through the narrow-mouth belt space formed by the upper narrow-mouth pulley and the lower narrow-mouth pulley to achieve the purpose of diagonally flattening the cardboard tube.

[0013] The height of the wide belt space formed by the upper and lower wide belt pulleys is adapted to the diagonal length of the square tube.

[0014] The height of the narrow belt space formed by the upper narrow belt pulley and the lower narrow belt pulley is equal to the thickness of the flattened cardboard square tube.

[0015] To adapt to an alternative production mode that does not require diagonal flattening during actual production, this utility model also includes a slide device. The slide device includes a slider, a slide rail, and a sliding driver. The slider is located at the four corners below the base plate. The slider is provided with a groove that adapts to the slide rail. The sliding driver is fixedly connected to the vertical plate.

[0016] Compared with existing technologies, this utility model has a higher degree of automation, which improves production efficiency and reduces labor costs. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is one of the schematic diagrams of the three-dimensional structure of the tube bending and bonding mechanism;

[0019] Figure 3 This is one of the schematic diagrams of the main components of the folding mechanism;

[0020] Figure 4 This is the second schematic diagram of the main structure of the folding mechanism;

[0021] Figure 5 for Figure 2 Enlarged view of a section in area B;

[0022] Figure 6 Exploded view of irregularly shaped pulley bracket and pulley assembly;

[0023] Figure 7 This is an exploded view of the main components of the tube bending and bonding mechanism;

[0024] Figure 8 for Figure 7 Enlarged view of a section in area C;

[0025] Figure 9 This is a schematic diagram of the main structure of the tube bending and bonding mechanism;

[0026] Figure 10 for Figure 2 Schematic diagram of the AA section direction;

[0027] Figure 11 This is one of the three-dimensional schematic diagrams of a diagonal flattening mechanism;

[0028] Figure 12 This is the second three-dimensional schematic diagram of the diagonal flattening mechanism;

[0029] Figure 13 This is a three-dimensional schematic diagram of the vertical plate structure of the base plate in the diagonal flattening mechanism;

[0030] Figure 14This is one of the schematic diagrams of the belt drive component in a diagonal flattening mechanism;

[0031] Figure 15 This is the second schematic diagram of the belt drive component in the diagonal flattening mechanism. Detailed Implementation

[0032] 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.

[0033] like Figures 1 to 15 As shown, a cardboard creasing and folding machine includes a creasing and punching mechanism 1, a folding and bonding mechanism 2, a cutting mechanism 3, and a diagonal flattening mechanism 4. The creasing and punching mechanism 1 and the folding and bonding mechanism 2 are connected in operation. The cutting mechanism 3 is connected after the folding and bonding mechanism 2, and the diagonal flattening mechanism 4 is connected after the cutting mechanism 3. The creasing and punching mechanism 1 is responsible for creasing and punching the cardboard. The folding and bonding mechanism 2 is responsible for folding and bonding the cardboard after creasing and punching. The cutting mechanism 3 is responsible for cutting the paper tubes. The diagonal flattening mechanism 4 is responsible for flattening the paper tubes. The folding and bonding mechanism 2 includes a folding edge mechanism 10, an M-shaped width limiting gate 20, a left top plate 21, and a glue dispensing machine 22, which are connected in sequence. The right top plate 23 and the bonding pressing roller 24, the folding mechanism 10 and the M-shaped width limiting gate 20 are responsible for the folding and forming of the creased cardboard and its conveying, the left top plate 21 is responsible for the left top folding, the glue dispensing machine 22 is responsible for applying glue, the right top plate 23 is responsible for the right top folding, and the bonding pressing roller 24 is responsible for pressing and bonding the top. The creased cardboard passes through the folding mechanism 10, the M-shaped width limiting gate 20, the left top plate 21, the glue dispensing machine 22, the right top plate 23 and the bonding pressing roller 24 in sequence to complete the tube folding and bonding process; the cardboard passes through the creased punching mechanism 1, the tube folding and bonding mechanism 2, the diagonal flattening mechanism 4 and the cutting mechanism 3 to complete the cardboard creased punching, tube folding and bonding, diagonal flattening and cutting processes.

[0034] like Figure 2 , Figure 3 , Figure 9As shown, the folding mechanism 10 includes a folding motor 101, a folding belt shaft 102, a lower folding gear 103, a left folding pulley 104, a middle transmission pulley 105, a right folding pulley 106, an upper folding gear 107, a special-shaped pulley bracket 108, a first transmission pulley 109, a second transmission pulley 1010, a third transmission pulley 1011, a pressure wheel 1012, a fourth transmission pulley 1013, an upper folding belt 1014, a lower folding belt 1015, a left pulley 1016, and a right pulley 1017. 017, left drive belt 1018, right drive belt 1019, folding motor 101 connected to folding belt shaft 102 are sequentially connected and fixed to lower folding gear 103, left folding pulley 104, and middle transmission pulley 105. Lower folding gear 103 meshes with upper folding gear 107 for transmission. The shaft of upper folding gear 107 passes through first transmission pulley 109 and is located at the front of irregular pulley bracket 108. Second transmission pulley 1010 is located in the middle of irregular pulley bracket 108. Pressure wheel 1012 is located on irregular pulley. At the rear of bracket 108, the third transfer pulley 1011 is located at the rear of the machine body, and the fourth transfer pulley 1013 is located below the third transfer pulley 1011. The upper folded edge belt 1014 drives the machine around the first transfer pulley 109, the second transfer pulley 1010, and the third transfer pulley 1011. The lower folded edge belt 1015 drives the machine around the middle transfer pulley 105 and the fourth transfer pulley 1013. The left pulley 1016 has an embedded bearing and is located on the left side of the rear part of the M-shaped width-limiting gate 20 process. The right pulley 101... 7. An embedded bearing is located on the right side of the rear part of the M-shaped width-limiting gate 20 process. The left folding edge pulley 104 and the left pulley 1016 are driven by the left drive belt 1018, and the right folding edge pulley 106 and the right pulley 1017 are driven by the right drive belt 1019. After the folding paperboard is folded by the folding mechanism 10 and the M-shaped width-limiting gate 20, it is then folded by the left top plate 21, glued by the glue dispensing machine 22, folded by the right top plate 23, and finally glued and pressed by the bonding and pressing wheel 24 to complete the process of folding the edge of the folding paperboard, gluing, and pressing it into a square tube.

[0035] like Figure 5 As shown, the M-shaped width-limiting gate 20 includes a top plate 201, side plates 202, and an N-shaped gate 203. The bottom sides of the top plate 201 are respectively connected to the side plates 202, and the top of the N-shaped gate 203 is connected to the center of the bottom of the top plate 201. The N-shaped gate 203 has a gate-shaped space to meet the need for the belt 1014 on the folded edge to pass through. The N-shaped gate 203 and the side plates 202 on both sides form a gate-shaped space to meet the need for the left drive belt 1018 and the right drive belt 1019 to pass through.

[0036] like Figure 3 , Figure 5 , Figure 7 , Figure 8 , Figure 10As shown, an upper connecting strip 1020 is provided between the first transmission pulley 109 and the third transmission pulley 1011. The upper connecting strip 1020 passes through the N-shaped door 203. The first end of the upper connecting strip 1020 is close to the first transmission pulley 109 and the bottom surface of the upper connecting strip 1020 is flush with the bottom surface of the first transmission pulley 109. The tail end of the upper connecting strip 1020 is close to the third transmission pulley 1011 and the bottom surface of the upper connecting strip 1020 is flush with the bottom surface of the third transmission pulley 1011.

[0037] The upper belt 1014 with folded edge is provided with an upper belt cover 1021. The first end of the upper belt cover 1021 is close to the tail of the N-shaped door 203, and the tail end of the upper belt cover 1021 is close to the third transmission pulley 1011.

[0038] like Figure 7 , Figure 10 As shown, a lower connecting strip 1022 is provided directly below the upper connecting strip 1020. The first end of the lower connecting strip 1022 is close to the middle conveyor belt pulley 105 and the top of the lower connecting strip 1022 is flush with the top surface of the middle conveyor belt pulley 105. The tail end of the lower connecting strip 1022 is close to the fourth transmission belt pulley 1013 and the top surface of the lower connecting strip 1022 is flush with the top surface of the fourth transmission belt pulley 1013.

[0039] The left pulley 1016 and the right pulley 1017 are respectively arranged in the middle of the lower connecting strip 1022. The left strip 1023 and the right strip 1024 are respectively arranged between the left pulley 1016, the right pulley 1017 and the third transmission pulley 1011. The left strip 1023 and the right strip 1024 are respectively placed on both sides of the belt cover 1021 on the folded edge. The left top plate 21 is fixed to the front of the left strip 1023, and the right top plate 23 is fixed to the middle of the right strip 1024 and is behind the dispensing machine 22.

[0040] like Figure 2 As shown, the adhesive pressing roller 24 is located on the side of the left strip 1023 and at the rear end of the folding right top plate 23 process, and is responsible for the adhesive pressing of the cardboard tube.

[0041] like Figures 11 to 15As shown, the diagonal flattening mechanism 4 includes a base plate 41, a vertical plate 42, a flattening motor 43, a first side plate 44, a second side plate 45, an upper wide-mouth pulley 46, a lower wide-mouth pulley 47, an upper narrow-mouth pulley 48, a lower narrow-mouth pulley 49, an upper narrow-mouth gear 410, a lower narrow-mouth gear 411, an upper flattening belt 412, and a lower flattening belt 413. The vertical plate 42 is connected to the base plate 41. The flattening motor 43 is fixed on a flattening motor mounting plate 421 provided on the vertical plate 42. A square through hole is provided on the vertical plate 42. The first side plate 44 and the second side plate 45 are provided on the two sides of the square through hole. The upper wide-mouth pulley 46, the lower wide-mouth pulley 47, the upper narrow-mouth pulley 48, and the lower narrow-mouth pulley 49 are provided on the inner side of the first side plate 44 and the second side plate 45. The upper wide-mouth pulley 46 is connected to the output shaft of the flattening motor 43. The upper narrow-mouth pulley 48 is fixedly connected to the upper narrow-mouth gear 410. The lower narrow-mouth pulley 49 is fixedly connected to the lower narrow-mouth gear 411. The upper narrow-mouth gear 410 and the lower narrow-mouth gear 411 mesh and move together. The upper wide-mouth pulley 46 and the upper narrow-mouth pulley 48 are driven by the flattening upper belt 412. The lower wide-mouth pulley 47 and the lower narrow-mouth pulley 49 are driven by the flattening lower belt 413. The cardboard square tube enters through the wide-mouth belt space formed by the upper wide-mouth pulley 46 and the lower wide-mouth pulley 47. After the belt space gradually narrows, it flows out through the narrow-mouth belt space formed by the upper narrow-mouth pulley 48 and the lower narrow-mouth pulley 49 to achieve the purpose of diagonally flattening the cardboard tube.

[0042] The height of the wide-mouth belt space formed by the upper wide-mouth pulley 46 and the lower wide-mouth pulley 47 is adapted to the diagonal length of the square tube.

[0043] The height of the narrow belt space formed by the upper narrow belt pulley 48 and the lower narrow belt pulley 49 is equal to the thickness of the cardboard square tube after it is flattened.

[0044] To adapt to an alternative production mode that does not require diagonal flattening during actual production, this utility model also includes a slide device. The slide device includes a slider 414, a slide rail 415, and a sliding driver 416. The slider 414 is located at the four corners of the corresponding side below the base plate 41. The slider 414 is provided with a sliding groove that is compatible with the slide rail 415. The sliding driver 416 is fixedly connected to the vertical plate 42.

[0045] Working principle of this utility model:

[0046] (a) Wire punching: such as Figure 1 As shown, when the cardboard enters the creasing and punching mechanism 1, the creasing and punching mechanism 1 completes the creasing and punching process of the cardboard, and the cardboard enters the tube folding and bonding mechanism 2.

[0047] (II) Tube forming: such as Figures 1 to 10As shown, when the crease-pressed cardboard enters the folding and bonding mechanism 2, the folding motor 101 rotates, driving the lower folding gear 103, left folding pulley 104, middle transmission pulley 105, and right folding pulley 106 to rotate synchronously. The upper folding gear 107, meshing with the lower folding gear 103, also rotates simultaneously, synchronously driving the first transmission pulley 109 to rotate. At this time, the left folding pulley 104 and the left pulley 1016 are driven in opposite directions by the left transmission belt 1018, causing the crease-pressed cardboard to gradually change from horizontal to vertical along the crease to complete the left fold. The right folding pulley 106 and the right pulley 1017 are driven in opposite directions by the right transmission belt 1019. Driven by the crease, the crease cardboard gradually changes from horizontal to vertical along the crease to complete the right edge removal. The first transmission pulley 109, the second transmission pulley 1010, and the third transmission pulley 1011 are driven by the upper belt 1014 around the crease, while the middle transmission pulley 105 and the fourth transmission pulley 1013 are driven by the lower belt 1015 around the crease. At this time, the left and right creases of the crease cardboard enter the left and right spaces formed by the N-shaped door 203 and the side plate 202, respectively. The tubular bottom surface of the crease cardboard moves towards the fourth transmission pulley 1013 at the tail end under the clamping action of the upper belt 1014 and the lower belt 1015. When the left fold of the crease cardboard passes the left top plate 21, the height of the space of the left top plate 21 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 22 for glue application. After completion, it continues to move forward. When the right fold of the crease cardboard passes the right top plate 23, the height of the space of the right top plate 23 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 24 to complete the entire folding, gluing, and pressing process.

[0048] (III) Diagonal flattening and cutting: such as Figure 1 and Figures 11 to 15As shown, when the cardboard square tube begins to pass through the cutting mechanism 3 and enters the wide-mouth belt space, the flattening motor 43 rotates, driving the upper wide-mouth belt pulley 46 to rotate synchronously. The upper wide-mouth belt pulley 46 drives the upper narrow-mouth belt pulley 48 to rotate through the flattening upper belt 412, causing the upper narrow-mouth gear 410 to rotate synchronously. The upper narrow-mouth gear 410 drives the lower narrow-mouth gear 411 to rotate through gear meshing, synchronously driving the lower narrow-mouth belt pulley 49 to rotate, and driving the lower wide-mouth belt pulley 47 through the flattening lower belt 413. This forms a gradual narrowing process from wide to narrow in the belt space of the flattening upper belt 412 and flattening lower belt 413. The cardboard square tube also achieves diagonal flattening during this gradual narrowing process. When entering another production mode that does not require diagonal flattening, the sliding driver 416 is activated. Under its traction force, the slider 414 at the bottom of the base plate 41 slides along the slide rail 415, thereby pulling the cardboard square tube diagonal flattening mechanism out of the working position. When the cardboard square tube is fed to the specified length, the cutting mechanism 3 is activated to cut the cardboard square tube, completing the entire process.

[0049] Compared with existing technologies, this utility model has a higher degree of automation, which improves production efficiency and reduces labor costs.

[0050] 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 cardboard creasing and folding machine, characterized in that, The system includes a crease and punching mechanism (1), a tube folding and bonding mechanism (2), a cutting mechanism (3), and a diagonal flattening mechanism (4). The crease and punching mechanism (1) and the tube folding and bonding mechanism (2) are connected in process. The cutting mechanism (3) is connected after the tube folding and bonding mechanism (2). The diagonal flattening mechanism (4) is connected after the cutting mechanism (3). The crease and punching mechanism (1) is responsible for crease and punching the paperboard. The tube folding and bonding mechanism (2) is responsible for folding and bonding the paperboard after crease and punching. The cutting mechanism (3) is responsible for cutting the paper tube. The diagonal flattening mechanism... (4) Responsible for flattening the paper tube, the folding and bonding mechanism (2) includes a folding mechanism (10), an M-shaped width limiting gate (20), a left top plate (21), a glue dispensing machine (22), a right top plate (23), and a bonding pressing wheel (24) connected in sequence. The folding mechanism (10) and the M-shaped width limiting gate (20) are responsible for the folding and forming of the creased paperboard and conveying it. The left top plate (21) is responsible for the left top folding. The glue dispensing machine (22) is responsible for applying glue. The right top plate (23) is responsible for the right top folding. The bonding pressing wheel (24) is responsible for pressing and bonding the top.

2. The cardboard creasing and folding machine according to claim 1, characterized in that, The folding mechanism (10) includes a folding motor (101), a folding belt shaft (102), a lower folding gear (103), a left folding pulley (104), a middle transmission pulley (105), a right folding pulley (106), an upper folding gear (107), a special-shaped pulley bracket (108), a first transmission pulley (109), a second transmission pulley (1010), a third transmission pulley (1011), a pressure wheel (1012), a fourth transmission pulley (1013), an upper folding belt (1014), and a lower folding belt (1015). The structure includes a left pulley (1016), a right pulley (1017), a left transmission belt (1018), and a right transmission belt (1019). The folding motor (101) is connected to the folding belt shaft (102), which is sequentially connected and fixed to the lower folding gear (103), the left folding pulley (104), and the middle transmission pulley (105). The lower folding gear (103) meshes with the upper folding gear (107) for transmission. The shaft of the upper folding gear (107) passes through the first transmission pulley (109) and is located at the front of the irregular pulley bracket (108). The second transmission pulley (1010) is located in the middle of the irregular pulley bracket (108), the pressure wheel (1012) is located at the tail of the irregular pulley bracket (108), the third transmission pulley (1011) is located at the tail of the machine body, the fourth transmission pulley (1013) is located below the third transmission pulley (1011), the upper folded belt (1014) drives the first transmission pulley (109), the second transmission pulley (1010), and the third transmission pulley (1011) around the belt drive of the lower folded belt (1014). 15) The belt drives are located around the middle transmission pulley (105) and the fourth transmission pulley (1013). The left pulley (1016) has an embedded bearing and is located on the left side of the rear part of the M-shaped width limiting gate (20) process. The right pulley (1017) has an embedded bearing and is located on the right side of the rear part of the M-shaped width limiting gate (20) process. The left folded edge pulley (104) and the left pulley (1016) are driven by the left transmission belt (1018). The right folded edge pulley (106) and the right pulley (1017) are driven by the right transmission belt (1019).

3. The cardboard creasing and folding machine according to claim 2, characterized in that, The M-shaped width-limiting gate (20) includes a top plate (201), side plates (202) and an N-shaped gate (203). The bottom sides of the top plate (201) are respectively connected to the side plates (202), and the top of the N-shaped gate (203) is connected to the center of the bottom of the top plate (201). The N-shaped gate (203) has a gate-shaped space, and the N-shaped gate (203) and the side plates (202) on both sides form a gate-shaped space.

4. The cardboard creasing and folding machine according to claim 3, characterized in that, An upper connecting strip (1020) is provided between the first transmission pulley (109) and the third transmission pulley (1011). The upper connecting strip (1020) passes through the N-shaped door (203) door-shaped space. The first end of the upper connecting strip (1020) is close to the first transmission pulley (109) and the bottom surface of the upper connecting strip (1020) is flush with the bottom surface of the first transmission pulley (109). The tail end of the upper connecting strip (1020) is close to the third transmission pulley (1011) and the bottom surface of the upper connecting strip (1020) is flush with the bottom surface of the third transmission pulley (1011).

5. The cardboard creasing and folding machine according to claim 4, characterized in that, The folded upper belt (1014) is provided with a folded upper belt cover (1021), the first end of the folded upper belt cover (1021) is close to the tail of the N-shaped door (203), and the tail end of the folded upper belt cover (1021) is close to the third transmission pulley (1011).

6. The cardboard creasing and folding machine according to claim 5, characterized in that, A lower connecting strip (1022) is provided directly below the upper connecting strip (1020). The first end of the lower connecting strip (1022) is close to the middle transmission pulley (105), and the top of the lower connecting strip (1022) is flush with the top surface of the middle transmission pulley (105). The tail end of the lower connecting strip (1022) is close to the fourth transmission pulley (1013), and the top surface of the lower connecting strip (1022) is flush with the top surface of the fourth transmission pulley (1013).

7. The cardboard creasing and folding machine according to claim 6, characterized in that, The left pulley (1016) and right pulley (1017) are respectively arranged in the middle of the lower connecting strip (1022). A left strip (1023) and a right strip (1024) are respectively arranged between the left pulley (1016), the right pulley (1017) and the third transmission pulley (1011). The left strip (1023) and the right strip (1024) are respectively placed on both sides of the belt cover (1021) on the folded edge. The left folded top plate (21) is fixed to the front of the left strip (1023), and the right folded top plate (23) is fixed to the middle of the right strip (1024) and behind the dispensing machine (22) process.

8. The cardboard creasing and folding machine according to claim 7, characterized in that, The adhesive pressing roller (24) is located on the side of the left strip (1023) and at the rear end of the right top plate (23) process.

9. The cardboard creasing and folding machine according to claim 1, characterized in that, The diagonal flattening mechanism (4) includes a base plate (41), a vertical plate (42), a flattening motor (43), a first side plate (44), a second side plate (45), an upper wide-mouth pulley (46), a lower wide-mouth pulley (47), an upper narrow-mouth pulley (48), a lower narrow-mouth pulley (49), an upper narrow-mouth gear (410), a lower narrow-mouth gear (411), an upper flattening belt (412), and a lower flattening belt (413). The vertical plate (42) is connected to the base plate (41). The flattening motor (43) is fixed on a flattening motor mounting plate (421) provided on the vertical plate (42). A square through hole is provided on the vertical plate (42). The first side plate (44) and the second side plate (45) are provided on the two sides of the square through hole. 44) The upper wide-mouth pulley (46), lower wide-mouth pulley (47), upper narrow-mouth pulley (48), and lower narrow-mouth pulley (49) are provided on the inner side of the second side plate (45). The shaft of the upper wide-mouth pulley (46) is connected to the output shaft of the flattening motor (43). The shaft of the upper narrow-mouth pulley (48) is fixedly connected to the upper narrow-mouth gear (410). The lower narrow-mouth pulley (49) is fixedly connected to the lower narrow-mouth gear (411). The upper narrow-mouth gear (410) and the lower narrow-mouth gear (411) mesh and are linked. The upper wide-mouth pulley (46) and the upper narrow-mouth pulley (48) are driven by the flattened upper belt (412). The lower wide-mouth pulley (47) and the lower narrow-mouth pulley (49) are driven by the flattened lower belt (413).

10. The cardboard creasing and folding machine according to claim 9, characterized in that, The height of the wide-mouth belt space formed by the upper wide-mouth pulley (46) and the lower wide-mouth pulley (47) is adapted to the diagonal length of the square tube; the height of the narrow-mouth belt space formed by the upper narrow-mouth pulley (48) and the lower narrow-mouth pulley (49) is equal to the thickness of the cardboard square tube after it is flattened.

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