Automatic box stapling equipment for rectangular cartons

Abstract

The present invention belongs to the technical field of carton nailing machines, and particularly relates to a novel rectangular carton automatic nailing device, comprising a carrying frame; a forming mold: a forming mold for a carton; a carton folding mechanism: comprising a left folding rod, a right folding rod, an upper folding rod, a bottom supporting mechanism and a folding rod driving mechanism for respectively driving the folding rods to swing, the left folding rod and the right folding rod are respectively located on the left and right sides of the forming mold, the upper folding rod is located above the forming mold, and the bottom supporting mechanism is located below the forming mold, and is used to provide support for carton boards; a box pushing mechanism: comprising a push plate and a push plate driving mechanism for driving the push plate to reciprocate, the push plate driving mechanism can push the carton to move toward the discharge side, and complete continuous nailing through the nailing machine. The present invention has the advantages of high automation, reduced manual participation, stable operation, high processing efficiency, high dimensional accuracy, etc., and can effectively avoid problems such as scissor edges, excessive overlap, and large interface seams.

Description

Technical Field

[0001] The invention belongs to the technical field of carton stapling machines, and in particular relates to an automatic rectangular carton stapling device. Background Art

[0002] Existing carton staplers include ordinary staplers, semi-automatic staplers and fully automatic staplers; ordinary staplers and semi-automatic staplers require extensive participation of staff, have a low degree of automation, and have low staple efficiency; existing semi-automatic and fully automatic staplers have defects such as poor precision and uncontrollable seam size, and often have problems such as scissor edges, excessive overlap, and large interface seams. Summary of the invention

[0003] The present invention provides an automatic box stapling device for rectangular cartons, which can solve the problems pointed out in the background technology.

[0004] An automatic rectangular carton stapling device comprises a carrying frame, a forming die, a carton folding mechanism, a carton pushing mechanism and a carton stapling machine head;

[0005] Forming mold: It is the forming mold of the carton. The carton board is formed into a rectangular carton after following the outer contour of the forming mold.

[0006] A right-angle positioning plate is provided on one side of the upper end of the molding die, and the right-angle positioning plate opens toward one side of the molding die. The right-angle positioning plate is driven to reciprocate by a right-angle positioning plate driving mechanism. The molding die includes four positioning plates, and the four positioning plates are separated at four corners to form a rectangular positioning frame.

[0007] Carton folding mechanism: including a left folding rod, a right folding rod, an upper folding rod, a bottom support mechanism and a folding rod driving mechanism for driving the folding rods to swing, the left folding rod and the right folding rod are respectively located on the left and right sides of the forming mold, the upper folding rod is located above the forming mold, and the bottom support mechanism is located below the forming mold, which is used to provide support for the carton board and form a gap with the bottom of the forming mold, and the gap is used for the carton board to pass through;

[0008] It also includes a left clamping mechanism and a right clamping mechanism, the left clamping mechanism and the right clamping mechanism are respectively located on the upper left side and the upper right side of the forming mold, the right clamping mechanism is driven to reciprocate by a right-angle positioning plate driving mechanism, the left clamping mechanism realizes its reciprocating motion through a clamping driving mechanism to realize respective clamping, the left clamping mechanism and the right clamping mechanism and the bottom support mechanism respectively include a support plate and a plurality of elastic clamping guide wheels arranged on the support plate;

[0009] The folding rod driving mechanism includes a servo motor, wherein the driving mechanism for driving the left folding rod and the right folding rod also includes two first synchronous belts, each of which is driven to rotate by a first servo motor, and the driven wheels of the two first synchronous belts are connected to the left folding rod and the right folding rod, and the two first synchronous belts and the first servo motors driving the first synchronous belts are respectively installed on the left and right fixed plates, and bottom support mechanisms are respectively fixed above the left and right fixed plates, wherein the fifth servo motor drives the upper folding rod, and its output end is connected to the upper folding rod;

[0010] The push plate driving mechanism includes a second servo motor and a second synchronous belt, and the push plate is fixed on the belt of the second synchronous belt;

[0011] The right-angle positioning plate driving mechanism includes a third servo motor and a first rack slide rail, and the right-angle positioning plate and the right-side clamping mechanism are both fixed on the slide seat of the first rack slide rail;

[0012] The clamping drive mechanism includes a fourth servo motor and a second rack slide rail, and the fifth servo motor and the left clamping mechanism are both fixed on the slide seat of the second rack slide rail;

[0013] Box pushing mechanism: includes a push plate and a push plate driving mechanism for driving the push plate to reciprocate, wherein the push plate driving mechanism can push the carton to move toward the discharge side and complete continuous stapling through the box stapling machine head.

[0014] Preferably, the elastic pressure guide wheel includes a rotating rod, a guide wheel and a tension spring. The rotating rod is tilted, and its tilting direction is the carton discharge direction. One end of the rotating rod is rotatably connected to the support plate, and the other end is provided with a guide wheel. One end of the tension spring is connected to the support plate and the other end is connected to the rotating rod.

[0015] Preferably, the fixed plate on the left is driven to reciprocate by a fixed plate driving mechanism to change the spacing with the fixed plate on the right, and the fixed plate on the right is fixed to the supporting frame;

[0016] The positioning plates include a first positioning plate and a second positioning plate on the left side and a third positioning plate and a fourth positioning plate on the right side, the first positioning plate is driven to reciprocate by a first positioning plate driving mechanism to change the distance between the first positioning plate and the third positioning plate on the opposite side, and the second positioning plate is driven to reciprocate by a second positioning plate driving mechanism to change the distance between the second positioning plate and the fourth positioning plate on the opposite side;

[0017] The clamping drive mechanism is driven to reciprocate by the first drive mechanism to achieve position matching between the clamping drive mechanism and the first positioning plate and the second positioning plate;

[0018] The first driving mechanism, the first positioning plate driving mechanism, the nail box head, the right-angle positioning plate driving mechanism, the push plate driving mechanism and the third positioning plate are all fixed on the lifting frame, and the lifting frame is lifted and lowered by the lifting frame driving mechanism.

[0019] Preferably, the fixed plate driving mechanism, the first positioning plate driving mechanism, the second positioning plate driving mechanism and the first driving mechanism all include a servo motor and an electric slide, and the lifting frame driving mechanism 81 is an electric screw lift, which is driven by a sixth servo motor.

[0020] Preferably, it also includes a position switch, which is used to monitor whether the carton board is loaded, and the position switch is fixed on the bottom supporting mechanism, and the position switch is a photoelectric sensor.

[0021] Preferably, the push plate includes a U-shaped plate and a transverse plate fixed to one side of the U-shaped plate for expanding the contact area.

[0022] Beneficial effects: The present invention is an automatic rectangular carton stapling device with a high degree of automation, which can reduce manual participation, has the advantages of very stable operation, very high processing efficiency, high dimensional accuracy, etc., and can especially effectively avoid problems such as scissor edges, excessive overlap, and large interface seams. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the forming nail making mechanism of the present invention.

[0024] Figure 2 It is a structural schematic diagram of the forming and nailing mechanism and the carton board of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the forming nailing mechanism of the present invention and the angle of the rear side of the carton board.

[0026] Figure 4 This is a schematic diagram of the structure of the elastic pressing guide wheel of the present invention.

[0027] Figure 5 The structure of the lower part of the present invention is shown in FIG. Figure 1 ,

[0028] Figure 6 The structure of the lower part of the present invention is shown in FIG. Figure 2 ,

[0029] Figure 7 It is a top view schematic diagram of the lower half of the present invention,

[0030] Figure 8 It is a schematic diagram of the overall structure of the present invention,

[0031] Fig. 9 It is a schematic diagram of the overall main view of the present invention,

[0032] Fig.10 This is a schematic top view of the overall carton of the present invention.

[0033] Fig.11 This is a schematic diagram of the push plate structure of the present invention.

[0034] Description of reference numerals:

[0035] Numbers in the figure: bearing frame 1; movable frame 2; positioning plate 21; positioning plate 211; positioning plate 212; positioning plate 213; positioning plate 214; right-angle positioning plate 22; right-angle positioning plate driving mechanism 23; third servo motor 231; first rack slide rail 232; left folding rod 31; right folding rod 32; upper folding rod 33; folding rod driving mechanism 34; first servo motor 341; first synchronous belt 342; fixed plate 343; fifth servo motor 344; bottom support mechanism 35; elastic pressing guide wheel 36; support plate 37; left pressure rod Tightening mechanism 38; right side clamping mechanism 39; clamping drive mechanism 40; fourth servo motor 401; second rack slide rail 402; push plate 41; U-shaped plate 411; transverse plate 412; push plate drive mechanism 42; second servo motor 421; second synchronous belt 422; mounting frame 43; nailing machine head 5; first positioning plate drive mechanism 61; second positioning plate drive mechanism 62; first drive mechanism 63; fixed plate drive mechanism 71; lifting frame drive mechanism 81; sixth servo motor 82; position switch 9; carton board 10; carton board feeder 11; DETAILED DESCRIPTION

[0036] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0037] Example 1: Figure 1-4 As shown, an automatic rectangular carton stapling device provided by an embodiment of the present invention, each actuator and detection element is programmed and controlled by a touch screen PLC integrated machine to realize automatic operation of corresponding actions, and its feeding end can cooperate with a chain-type carton board feeding machine 11 to complete feeding through the carton board feeding machine 11;

[0038] It includes a supporting frame 1 and a forming and nailing mechanism; the forming and nailing mechanism includes a forming mold, a carton folding mechanism, a carton pushing mechanism and a carton nailing machine head 5;

[0039] The load-bearing frame 1 is a load-bearing frame and a component mounting base;

[0040] Special combination Figure 1-3As shown, the forming mold is a forming mold for a carton. The carton board forms a rectangular carton along the outer contour of the forming mold. The forming mold includes four positioning plates 21, and the positioning plates 21 include a first positioning plate 211 and a second positioning plate 212 on the left side and a third positioning plate 213 and a fourth positioning plate 214 on the right side. The four positioning plates 21 are separated at four corners to form a rectangular positioning frame.

[0041] Special combination Figure 1-3 As shown, the carton folding mechanism includes a left folding rod 31, a right folding rod 32, an upper folding rod 33, a bottom support mechanism 35, and a folding rod driving mechanism 34 for driving the folding rods to swing. The left folding rod 31 and the right folding rod 32 are respectively located on the left and right sides of the forming mold, the upper folding rod 33 is located above the forming mold, and the bottom support mechanism 35 is located below the forming mold, which is used to provide support for the carton board 10 and form a gap with the bottom of the forming mold, and the gap is used for the carton board 10 to pass through. The left folding rod 31, the right folding rod 32, and the upper folding rod 33 are respectively used to fold the left side, right side, and upper side of the carton board 10, so that each surface of the carton board 10 fits on the forming mold; specifically, the folding rod driving mechanism 34 includes a servo motor , wherein the driving mechanism for driving the left folding rod 31 and the right folding rod 32 also includes two first synchronous belts 342, each of which is driven to rotate by a first servo motor 341, and the driven wheels of the two first synchronous belts 342 are connected to the left folding rod 31 and the right folding rod 32, and the two first synchronous belts 342 and the first servo motor 341 driving the first synchronous belts 342 are respectively installed on the left and right fixed plates 343, and the bottom support mechanism 35 is fixed above the left and right fixed plates 343, wherein the fifth servo motor 344 drives the upper folding rod 33, and its output end is connected to the upper folding rod 33, and the swing of each folding rod is realized by setting the forward and reverse rotation of the servo motor, and the swing amplitude is preferably 90 degrees of rotation swing;

[0042] Special combination Figure 1-3 As shown, the box pushing mechanism includes a push plate 41 and a push plate driving mechanism 42 for driving the push plate 41 to reciprocate. The push plate driving mechanism 42 can push the carton to move toward the discharge side and complete continuous stapling through the nailing machine head 5. The nailing machine head 5 is driven by a servo motor. The push plate driving mechanism 42 includes a second servo motor 421 and a second synchronous belt 422. The push plate 41 is fixed on the belt of the second synchronous belt 422. The push plate 41 is driven by the belt to push the folded carton board 10 to move toward the discharge side. During the movement, the nailing machine head 5 completes continuous stapling.

[0043] In order to effectively avoid the appearance of scissor edges, Fig.11The push plate 41 includes a U-shaped plate 411 and a transverse plate 412 fixed on one side of the U-shaped plate 411 for expanding the contact area. One side of the transverse plate 412 is used to push the carton board 10 outside the third positioning plate 213 and the fourth positioning plate 214, and the other side of the U-shaped plate 411 is used to push the upper side of the carton board 10. Through this push plate 41, the upper side and the right side of the carton board 10 can be pushed to move at the same time, so that the position can be kept synchronous during the nailing process, effectively avoiding the appearance of scissor edges.

[0044] The forming mold provides the carton with a forming limit support, and the bottom support mechanism 35 and the left, right and upper folding rods are used to complete the automatic folding, so that each side of the carton board 10 can fit better on the forming mold, with higher dimensional accuracy and more stable forming. In the process, manual participation is reduced, the degree of automation is high, and the processing efficiency is correspondingly improved. Finally, the box pushing mechanism cooperates with the box nailing machine head 5 to achieve continuous nailing.

[0045] Example 2: Special Combination Figure 1-3 As shown, on the basis of Example 1, in order to further improve the dimensional accuracy, effectively avoid the occurrence of problems such as excessive overlap and large interface seams, and improve the quality of the finished product, a right-angle positioning plate 22 is provided on one side of the upper end of the molding mold, and the right-angle positioning plate 22 opens toward one side of the molding mold. The right-angle positioning plate 22 is driven to reciprocate by a right-angle positioning plate driving mechanism 23. The right-angle positioning plate driving mechanism 23 includes a third servo motor 231 and a first rack slide rail 232. The right-angle positioning plate 22 is fixed on the slide seat of the first rack slide rail 232; the right-angle positioning plate 22 is one of the core invention points of the present invention. The positioning plate 22 is used to position the joint of the carton board 10. The right-angle positioning plate 22 is located at the upper right corner of the molding mold. The horizontal plate of the right-angle positioning plate 22 is fitted with the third positioning plate 213. The joint of the carton board 10 is located at the upper right corner of the molding mold. The left side of the carton board 10 is fitted on the left side of the molding mold, and its top is against the bottom surface of the horizontal plate, and is positioned by its horizontal plate; the right end of the upper side of the carton board 10 is against the inner side of the vertical plate of the right-angle positioning plate 22, and is positioned by its vertical plate. At this time, the size of the joint is also determined accordingly. Therefore, during the nailing process, problems such as scissor edges, excessive overlap, and large interface seams can be effectively avoided.

[0046] Special combination Figure 1-4As shown, in order to make it more stable and more accurate in size during the nailing process, it also includes a left clamping mechanism 38 and a right clamping mechanism 39, which press the left and right sides of the carton board 10 tightly against the forming mold through the clamping mechanisms on both sides. The left clamping mechanism 38 and the right clamping mechanism 39 are located on the upper left and upper right sides of the forming mold respectively, and the right clamping mechanism 39 is fixed on the slide seat of the first rack slide 232; it is driven to reciprocate by the right-angle positioning plate driving mechanism 23, and the left clamping mechanism 38 realizes its reciprocating motion through the clamping driving mechanism 40, and the clamping driving mechanism 40 includes a fourth servo motor 401 and a second rack slide 402, and the fifth servo motor 344 and the left clamping mechanism 38 are all fixed on the slide seat of the second rack slide 402; to achieve their respective clamping, the left clamping mechanism 38 and the right clamping mechanism 39 and the bottom support mechanism 35 respectively include a support plate 37 and a plurality of elastic clamping guide wheels 36 arranged on the support plate 37, combined with Figure 4 The elastic pressure guide wheel 36 includes a rotating rod 361, a guide wheel 362 and a tension spring 363. The rotating rod 361 is tilted, and its tilting direction is the carton discharge direction. One end of the rotating rod is rotatably connected to the support plate 37, and the other end is provided with a guide wheel 362. One end of the tension spring 363 is connected to the support plate and the other end is connected to the rotating rod 361. The elastic pressure guide wheel 36 is set to make the various surfaces of the carton board 10 close to the forming mold, and does not hinder the box pushing mechanism from pushing the carton to the discharge side. The reason why the tilting direction of the rotating rod is set to the carton discharge direction is that it is convenient for the carton board 10 to enter and also convenient for the carton board 10 to move outward.

[0047] Example 3: Special Combination Figure 5-10 As shown, on the basis of Example 1 or Example 2, in order to meet the nailing requirements of carton boards 10 of different sizes, the forming mold is set to be adjustable, and its size is adjusted accordingly according to the size of the carton. In addition, the corresponding structure is also adjusted synchronously therewith, specifically:

[0048] The first positioning plate 211 is driven to reciprocate by the first positioning plate driving mechanism 61 to change the distance between the first positioning plate 211 and the third positioning plate 213 on the opposite side. The second positioning plate 212 is driven to reciprocate by the second positioning plate driving mechanism 62 to change the distance between the first positioning plate 211 and the third positioning plate 213 on the opposite side. The fourth positioning plate 214 is fixed on the supporting frame 1 and is stationary. The first positioning plate 211 and the second positioning plate 212 move synchronously to adjust the size of the molding die in the width direction.

[0049] The fixed plate 343 on the left side is driven to reciprocate by the fixed plate driving mechanism 71 to change the spacing with the fixed plate 343 on the right side. The fixed plate 343 on the right side is fixed to the supporting frame 1. Through this structure, the position adjustment of the left folding square rod 31, the left folding square rod driving mechanism 34 and the left bottom supporting mechanism 35 can be realized to match the positions of the left first positioning plate 211 and the second positioning plate 212.

[0050] The clamping drive mechanism 40 is driven to reciprocate by the first drive mechanism 63. The clamping drive mechanism 40 is fixed to the mounting frame 43, and the mounting frame 43 is fixed to the slide seat of the first drive mechanism 63 to achieve the position matching of the clamping drive mechanism 40 with the first positioning plate 211 and the second positioning plate 212; the fixed plate drive mechanism 71, the first positioning plate drive mechanism 61, the second positioning plate drive mechanism 62 and the first drive mechanism 63 all include a servo motor and an electric slide.

[0051] The first driving mechanism 63, the first positioning plate driving mechanism 61, the nail box head 5, the right-angle positioning plate driving mechanism 23, the push plate driving mechanism 42 and the third positioning plate 213 are all fixed on the lifting frame 2, and the lifting frame 2 is lifted and lowered by the lifting frame driving mechanism 81. The lifting frame driving mechanism 81 is an electric screw elevator, which is driven by the sixth servo motor 82. Through this structure, the height of the first positioning plate 212 and the third positioning plate 213 can be adjusted, and the size of the molding mold in the height direction is adjusted. Since the first driving mechanism 63, the nail box head 5, the right-angle positioning plate driving mechanism 23, and the push plate driving mechanism 42 are all fixed on the same lifting frame 2, the height of the left clamping mechanism 38, the right clamping mechanism 39, the right-angle positioning plate 22, the nail box head 5, the push plate driving mechanism 42, etc. can be adjusted synchronously with the first positioning plate 212 and the third positioning plate 213.

[0052] Example 4: Special Combination Figure 1 On the basis of Example 1 or Example 2 or Example 3, it also includes a position switch 9, and the position switch 9 is used to monitor whether the carton board 10 is loaded. The position switch 9 is fixed on the bottom support mechanism 35. The position switch 9 is a photoelectric sensor. The present invention cooperates with the chain-type carton board loading machine 11 to load the carton board. The chain-type carton board loading machine 11 is used to transport the carton board 10 to between the bottom support mechanism 35 and the molding mold. When the position switch 9 detects the material board, the PLC control system controls the corresponding actions of other mechanisms to improve its degree of automation.

[0053] The working principle of the present invention is as follows: through the programming control of the touch screen PLC integrated machine, the feeding end adopts a chain-type carton board feeding machine 11 to cooperate with the feeding, and the carton board 10 is pushed to between the bottom support mechanism 35 and the forming mold through the feeding machine. The position switch 9 receives the signal and feeds it back to the PLC control system. The PLC control system controls the left and right folding rod driving mechanisms 34 to move, and the left folding rod 31 and the right folding rod 32 swing to fold the left and right sides of the carton board 10 to make it fit on both sides of the forming mold. The PLC control system controls the right-angle positioning plate driving mechanism 23 to move, and drives the right-angle positioning plate 22 to a predetermined position. At the same time, the right clamping mechanism 39 The right side of the carton board 10 is pressed, and the PLC control system controls the clamping drive mechanism 40 to move. The clamping drive mechanism 40 drives the left clamping mechanism 39 and the fifth servo motor 344 to the predetermined position. The left clamping mechanism 39 presses the left side of the carton board 10. At the same time, the fifth servo motor 344 drives the upper folding rod 33 to swing, and presses the top of the carton board 10 on the forming mold. At this time, the carton board 10 is folded into a rectangle. The PLC control system controls the synchronous movement of the pushing mechanism and the nailing head 5. While the pushing plate 41 pushes the carton board 10 to move toward the discharge port side, the nailing head 5 completes continuous nailing. After the above actions are completed, each mechanism returns to its corresponding position.

[0054] The above disclosures are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An automatic rectangular carton stapling device, characterized by: It comprises a supporting frame (1), a forming die, a carton folding mechanism, a carton pushing mechanism and a carton stapling machine head (5); Forming mold: It is the forming mold of the carton. The carton board is formed into a rectangular carton after following the outer contour of the forming mold. A right-angle positioning plate (22) is provided on one side of the upper end of the molding die, the right-angle positioning plate (22) opening is facing one side of the molding die, the right-angle positioning plate (22) is driven to reciprocate by a right-angle positioning plate driving mechanism (23), the molding die comprises four positioning plates (21), the four positioning plates (21) are separated at four corners to form a rectangular positioning frame; The carton folding mechanism comprises a left folding rod (31), a right folding rod (32), an upper folding rod (33), a bottom support mechanism (35), and a folding rod driving mechanism (34) for driving the folding rods to swing, respectively. The left folding rod (31) and the right folding rod (32) are respectively located on the left and right sides of the forming mold, the upper folding rod (33) is located above the forming mold, and the bottom support mechanism (35) is located below the forming mold and is used to provide support for the carton board and form a gap with the bottom of the forming mold, wherein the gap is used for the carton board to pass through; It also includes a left-side clamping mechanism (38) and a right-side clamping mechanism (39), the left-side clamping mechanism (38) and the right-side clamping mechanism (39) are located on the upper left and upper right sides of the molding die respectively, the right-side clamping mechanism (39) is driven to reciprocate by a right-angle positioning plate driving mechanism (23), the left-side clamping mechanism (38) is driven to reciprocate by a clamping driving mechanism (40) to achieve respective clamping, the left-side clamping mechanism (38) and the right-side clamping mechanism (39) and the bottom support mechanism (35) respectively include a support plate (37) and a plurality of elastic clamping guide wheels (36) arranged on the support plate (37); The folding rod driving mechanism (34) comprises a servo motor, wherein the driving mechanism for driving the left folding rod (31) and the right folding rod (32) further comprises two first synchronous belts (342), each of the first synchronous belts (342) is driven to rotate by a first servo motor (341), the driven wheels of the two first synchronous belts (342) are respectively connected to the left folding rod (31) and the right folding rod (32), the two first synchronous belts (342) and the first servo motor (341) driving the first synchronous belts (342) are respectively mounted on the left and right fixed plates (343), the tops of the left and right fixed plates (343) are respectively fixedly provided with bottom support mechanisms (35), wherein the fifth servo motor (344) drives the upper folding rod (33), and the output end of the fifth servo motor (344) is connected to the upper folding rod (33); The box pushing mechanism comprises a pushing plate (41) and a pushing plate driving mechanism (42) for driving the pushing plate (41) to reciprocate, wherein the pushing plate driving mechanism (42) can push the carton to move toward the discharge side and complete continuous stapling through the box stapling machine head (5); The push plate driving mechanism (42) comprises a second servo motor (421) and a second synchronous belt (422), and the push plate (41) is fixed on the belt of the second synchronous belt (422); The right-angle positioning plate driving mechanism (23) comprises a third servo motor (231) and a first rack slide rail (232); the right-angle positioning plate (22) and the right-side clamping mechanism (39) are both fixed on a slide seat of the first rack slide rail (232); The clamping drive mechanism (40) comprises a fourth servo motor (401) and a second rack slide rail (402), and the fifth servo motor (344) and the left clamping mechanism (38) are both fixed on the slide seat of the second rack slide rail (402).

2. The automatic rectangular carton stapling device according to claim 1 is characterized by: The elastic pressing guide wheel (36) comprises a rotating rod (361), a guide wheel (362) and a tension spring (363); the rotating rod (361) is arranged to be inclined, and its inclination direction is the carton discharge direction; one end of the rotating rod is rotatably connected to the support plate (37), and the other end is provided with a guide wheel (362); one end of the tension spring (363) is connected to the support plate, and the other end is connected to the rotating rod (361).

3. The automatic rectangular carton stapling device according to claim 1 is characterized by: The fixed plate (343) on the left side is driven to reciprocate by a fixed plate driving mechanism (71) to change the distance between the fixed plate (343) on the right side, and the fixed plate (343) on the right side is fixed to the supporting frame (1); The positioning plate (21) comprises a first positioning plate (211) and a second positioning plate (212) on the left side, and a third positioning plate (213) and a fourth positioning plate (214) on the right side, wherein the first positioning plate (211) is driven to reciprocate by a first positioning plate driving mechanism (61) to change the distance between the first positioning plate (211) and the third positioning plate (213) on the opposite side, and the second positioning plate (212) is driven to reciprocate by a second positioning plate driving mechanism (62) to change the distance between the second positioning plate (212) and the fourth positioning plate (214) on the opposite side; The pressing drive mechanism (40) is driven to reciprocate via the first drive mechanism (63) to achieve position matching between the pressing drive mechanism (40) and the first positioning plate (211) and the second positioning plate (212); The first driving mechanism (63), the first positioning plate driving mechanism (61), the nail box head (5), the right-angle positioning plate driving mechanism (23), the push plate driving mechanism (42) and the third positioning plate (213) are all fixed on the lifting frame (2), and the lifting frame (2) is lifted and lowered by the lifting frame driving mechanism (81).

4. The automatic rectangular carton stapling device according to claim 3 is characterized by: The fixed plate driving mechanism (71), the first positioning plate driving mechanism (61), the second positioning plate driving mechanism (62) and the first driving mechanism (63) all comprise a servo motor and an electric slide, and the lifting frame driving mechanism (81) is an electric lead screw lift, which is driven by a sixth servo motor (82).

5. The automatic rectangular carton stapling device according to any one of claims 1 to 4, characterized in that: It also includes a position switch (9), which is used to monitor whether the carton board is loaded, and the position switch (9) is fixed on the bottom support mechanism (35), and the position switch (9) is a photoelectric sensor.

6. The automatic rectangular carton stitching device according to any one of claims 1 to 4, characterized in that: The push plate (41) comprises a U-shaped plate (411) and a transverse plate (412) fixed to one side of the U-shaped plate (411) for expanding the contact area.

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