Automatic plastic packaging box folding device

Abstract

The invention belongs to the technical field of packaging box folding, and particularly relates to an automatic plastic packaging box folding device which comprises a rack, and a feeding mechanism, a pre-folding mechanism and a folding mechanism are sequentially arranged on the rack. The separating mechanism comprises a support fixedly connected to the rack, a rotating shaft and a rotating shaft; the inflator is fixedly connected to the support in an inclined manner, and a piston rod is movably inserted into the inflator; through cooperation of the separating mechanism, the driving mechanism and the adjusting mechanism, automatic flow line production work can be achieved, and in the flow line production process, the functions of separating and correcting the redundant plastic plates which may adhere to each other and eliminating the elasticity of the pre-folded packaging box are automatically completed; and an electric driving system for separating, correcting and eliminating elastic force does not need to be additionally arranged, the automation degree is high, the production line structure is simplified, and use is convenient.

Description

Technical Field

[0001] The invention belongs to the field of packaging box folding, in particular to an automatic plastic packaging box folding device. Background Art

[0002] Folding a packaging box is a process of folding a flat material into a specific shape along a crease. For a plastic packaging box, the crease position and shape will be determined on the flat plastic board during the design stage, and then folded in a certain order. First, the bottom board and side boards are folded along the crease to form a basic frame. Then, the hinges on the side boards and other auxiliary parts are folded to complete the folding of the entire packaging box.

[0003] In the automated production of folding plastic packaging boxes, before folding, for the convenience of storage and retrieval, flat plastic plates are generally stacked together in the longitudinal direction, and then the plastic plates are picked up one by one and transported to the folding station by a transfer device such as a robot. Due to factors such as the characteristics of the flat plastic plates themselves, the upper and lower plastic plates may adhere to each other. Therefore, when a robot is used to grab and transport the plastic plates, two adhered plastic plates may be transferred to the folding device at the same time, which will directly affect the folding effect of the plastic packaging box.

[0004] To this end, the present invention provides an automatic plastic packaging box folding device. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is: the automatic plastic packaging box folding device described in the present invention comprises a frame, on which a feeding mechanism, a pre-folding mechanism and a folding mechanism are sequentially arranged;

[0007] The feeding mechanism comprises: a material table for placing the plastic plate; a manipulator movably arranged on the frame, the bottom end of the manipulator being provided with a suction cup for grabbing the plastic plate;

[0008] The pre-folding mechanism comprises: a mold assembly arranged on the frame; a stamping template slidably arranged on the frame, the stamping template is located above the mold assembly, the manipulator transports the plastic plate to the top of the mold assembly, and the stamping template moves downward to press the plastic plate into the mold assembly, so as to fold the plastic plate into a semi-finished packaging box;

[0009] The folding mechanism comprises a folding plate movably arranged on the frame, and the folding plate is used to fold the side of the semi-finished product packaging box inwardly to shape it;

[0010] It also includes a separation mechanism, which includes: a support fixedly connected to the frame; an air cylinder fixedly connected to the support in an inclined state, a piston rod movably inserted into the interior of the air cylinder, an air nozzle in the air cylinder facing upward, and after the piston rod performs piston motion inside the air cylinder, the air cylinder blows and sucks the bottom of the plastic plate grasped by the robot.

[0011] Preferably, it also includes a conveying mechanism for transferring the packaging box; the conveying mechanism includes: a limiting bracket fixedly connected to the frame; a conveyor belt arranged on the limiting bracket;

[0012] The mold assembly includes: a fixed mold fixedly connected to the frame; a movable mold rotatably arranged on the frame, the movable mold and the fixed mold form a rectangular shape corresponding to the packaging box, the movable mold is located above the conveyor belt, and the movable mold is close to the folding mechanism.

[0013] Preferably, it also includes a driving mechanism, which includes: a spring assembly arranged on the support; a turntable fixedly connected to the output end of the spring assembly; a round rod fixedly connected to the eccentric part of the turntable, and the round rod is inserted into the interior of the piston rod. After the output end of the spring assembly rotates, the piston rod is driven to reciprocate through the round rod.

[0014] Preferably, the driving mechanism also includes: a driven gear fixedly connected to the input end of the clockwork assembly; a slide plate slidably arranged on the support; a ratchet plate slidably arranged on the slide plate, the ratchet plate being meshingly connected with the driven gear, and the ratchet plate drives the driven gear to rotate in one direction after moving up and down.

[0015] Preferably, the driving mechanism further comprises a holder fixedly connected to the manipulator, and the ratchet plate is provided with a protrusion inserted into the holder.

[0016] Preferably, the driving mechanism further comprises a clutch member fixedly connected to the support, and the clutch member is provided with two oblique edges for pushing the ratchet plate to move laterally.

[0017] Preferably, it also includes an adjustment mechanism, which includes: a paddle plate assembly slidably arranged on the frame, the paddle plate assembly includes an active plate and a driven plate, and the paddle plate assembly is distributed on the outer side of the plastic plate on the material table; a linkage member fixedly connected to the active plate, and after the active plate moves, the driven plate is driven to move through the linkage member.

[0018] Preferably, the adjustment mechanism further comprises a plurality of unloading plates slidably arranged on the frame, wherein the unloading plates are distributed on the outside of the mold assembly, and the unloading plates squeeze the packaging box located in the mold assembly after moving.

[0019] Preferably, the adjustment mechanism also includes: a steering gear rotatably arranged on the frame; a rack plate is respectively fixedly connected to the active plate and one of the unloading plates, and the rack plate is meshingly connected with the steering gear; and transmission is performed between the active plate and the remaining unloading plates via the linkage member.

[0020] Preferably, the adjustment mechanism also includes: a magnetic block 1 fixedly connected to the force unloading plate; a magnetic block 2 fixedly connected to the stamping template, wherein the magnetic properties of the magnetic block 2 and the side opposite to the magnetic block 1 are different, and after the stamping template moves downward, the force unloading plate is driven close to the packaging box by the suction force between the magnetic block 2 and the magnetic block 1; and a reset part used to push the active plate away from the material table.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The automatic plastic packaging box folding device described in the present invention, after the robot arm absorbs and grabs the plastic plate, continuously blows and evacuates the bottom of the plastic plate by setting an air cylinder. The airflow generated by the air cylinder will cause the plastic plate adhered below to shake and fall off, so that the excess plastic plate adhered is separated, thereby completing the work of separating the excess plastic plate adhered, and improving the problem of affecting the folding work due to the adhesion of plastic plates.

[0023] 2. The automatic plastic packaging box folding device described in the present invention, by providing a shifting plate assembly to adjust the position of the plastic plate that falls onto the material table after separation, improves the problem of the folding result being affected by the position deviation of the plastic plate, and by providing a force unloading plate to squeeze the packaging box from the outside to the inside, the residual rebound force in the plastic material of the packaging box can be removed, thereby further improving the folding effect of the packaging box.

[0024] 3. The automatic plastic packaging box folding device described in the present invention can realize automated assembly line production by setting up a separation mechanism, cooperating with a driving mechanism and an adjustment mechanism. During the assembly line production process, it can automatically complete the functions of separating and adjusting the position of excess plastic plates that may be adhered, and eliminating the elastic force of the pre-folded packaging box. There is no need to additionally set up an electrical drive system for separation, adjustment and elastic force elimination. It has a high degree of automation, simplifies the production line structure, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of the folding process of a plastic packaging box;

[0028] Figure 3 It is a three-dimensional diagram of the structural coordination status on the rack;

[0029] Figure 4 It is a side view of the pre-folding mechanism, folding mechanism and transmission mechanism;

[0030] Figure 5 It is a three-dimensional diagram of the manipulator, the separation mechanism and the adjustment mechanism;

[0031] Figure 6 is a side view of the adjustment mechanism and the packaging box;

[0032] Figure 7 is a schematic diagram of the manipulator and the separation mechanism;

[0033] Figure 8 It is an exploded diagram of the separation mechanism and the driving mechanism;

[0034] Fig. 9 It is the exploded diagram of the adjustment mechanism;

[0035] In the figure: 1, frame; 2, feeding mechanism; 21, material table; 22, manipulator; 221, suction cup; 3, pre-folding mechanism; 31, stamping template; 32, fixed mold; 33, movable mold; 4, folding mechanism; 41, folding plate; 5, separation mechanism; 51, support; 52, air cylinder; 53, piston rod; 6, transmission mechanism; 61, limit bracket; 62, conveyor belt; 7, driving mechanism; 71, clockwork assembly; 72, turntable; 73, round rod; 74, driven gear; 75, slide plate; 76, ratchet plate; 77, card seat; 78, clutch;

[0036] 8. Adjustment mechanism; 81. Active plate; 82. Driven plate; 83. Linkage member; 84. Unloading plate; 85. Adjustment gear; 86. Rack plate; 87. Magnetic block 1; 88. Magnetic block 2; 89. Reset member. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0038] Embodiment 1

[0039] like Figure 1-8 As shown, an automatic plastic packaging box folding device according to an embodiment of the present invention comprises a frame 1, on which a feeding mechanism 2, a pre-folding mechanism 3 and a folding mechanism 4 are sequentially arranged;

[0040] The feeding mechanism 2 comprises: a material table 21 for placing the plastic plate; a manipulator 22 movably arranged on the frame 1, and a suction cup 221 for grabbing the plastic plate is arranged at the bottom end of the manipulator 22;

[0041] The pre-folding mechanism 3 includes: a mold assembly arranged on the frame 1; a stamping template 31 slidably arranged on the frame 1, the stamping template 31 is located above the mold assembly, the manipulator 22 transports the plastic plate to the top of the mold assembly, and the stamping template 31 moves down to press the plastic plate into the mold assembly, so as to fold the plastic plate into a semi-finished packaging box;

[0042] The folding mechanism 4 comprises a folding plate 41 movably arranged on the frame 1, and the folding plate 41 is used to fold the side of the semi-finished product packaging box inwardly to shape;

[0043] It also includes a separation mechanism 5, which includes: a support 51 fixed on the frame 1; an air cylinder 52 fixed on the support 51 in an inclined state, a piston rod 53 movably inserted inside the air cylinder 52, and an air nozzle in the air cylinder 52 faces upward. After the piston rod 53 performs piston motion inside the air cylinder 52, the air cylinder 52 blows and sucks the bottom of the plastic plate grasped by the robot 22.

[0044] Specifically, the manipulator 22 can move left and right and up and down, the material table 21 can be fixedly installed on the frame 1, and can also be installed on the frame 1 in a lifting manner; the folding mechanism 4 includes two sets of front and rear folding plates 41, and the folding plates 41 can move forward and backward and up and down. Of course, the folding plates 41 can also adopt a rotating installation structure;

[0045] The plastic packaging box includes a box body. Depending on the specific situation, a box cover may or may not be provided on the top of the box body. Figure 2 The box shown is a package with a lid, and the shape of the unfolded plastic sheet is as follows Figure 2 As shown in (a), the plastic plate is in a planar shape, and a folding sheet is provided on the plastic plate. The plastic plates are stacked on the material table 21. Initially, the manipulator 22 is located above the left material table 21. After the manipulator 22 moves down, it absorbs the topmost plastic plate on the material table 21, and then the manipulator 22 moves up and leftward to transfer the plastic plate to the top of the fixed mold 32. At this time, the plastic plate is preferably but not limited to being attached to the top of the fixed mold 32. Then the manipulator 22 releases the plastic plate, and the plastic plate stays on the fixed mold 32. After the stamping template 31 moves down, the plastic plate is pressed into the fixed mold 32 for pre-folding, and the plastic plate is preliminarily folded into the following Figure 2 The semi-finished product is in the shape of the semi-finished product shown in (b). At this time, the folding leaf is located at the top of the front and rear sides of the semi-finished product packaging box; then, the semi-finished product packaging box is moved between the two folding plates 41 by manual means, and the folding plates 41 move toward the inside of the semi-finished product packaging box, pushing the folding leaf to fold toward the inside of the semi-finished product packaging box, so that it is folded into the shape as shown in FIG. Figure 2 The packaging box shown in (c) is thus folded.

[0046] Since the flat plastic plates are stacked together, affected by the characteristics of the plastic itself and other factors, the upper and lower plastic plates may stick together, affecting the subsequent folding work. In order to improve this problem, a separation mechanism 5 is provided; according to the specific situation, the separation mechanism 5 can be provided as one group or multiple groups;

[0047] The air cylinder 52 is located on the outside of the plastic plate and will not interfere with the movement of the plastic plate. Initially, the manipulator 22 is located at the top of the left side. After the manipulator 22 adsorbs the plastic plate on the material table 21 and moves it up, the plastic plate moves up to the top of the air cylinder 52. The air nozzle of the air cylinder 52 is close to the bottom of the plastic plate, and the piston rod 53 is started to make a piston movement in the air cylinder 52, so that the air cylinder 52 continuously blows and extracts air on the bottom of the plastic plate. The air flow force generated by the air cylinder 52 is less than the adsorption force of the suction cup 221 in the manipulator 22 on the plastic plate. Since the air cylinder 52 is inclined, the air flow generated by the air cylinder 52 has longitudinal and lateral forces on the bottom of the plastic plate. If there is still excess plastic plate adhered to the bottom of the plastic plate to be folded, the air flow generated by the air cylinder 52 will cause the plastic plate adhered below to shake, so that the excess plastic plate adhered will fall off, thereby completing the work of separating the excess plastic plates adhered, and improving the problem of affecting the folding work due to the adhesion of the plastic plates.

[0048] It should be noted that, according to specific production requirements, if the box cover needs to be folded, the box cover can be folded manually or by adding a folding device.

[0049] In the folding device, another operation method for pre-folding the packaging box is:

[0050] A suction cup 221 for adsorbing the plastic plate can also be set at the bottom end of the stamping template 31. The manipulator 22 adsorbs the topmost plastic plate on the material table 21 and then moves to the left, transferring the plastic plate to the bottom of the stamping template 31, and the plastic plate is attached to the bottom end of the stamping template 31. The stamping template 31 adsorbs the plastic plate, and then the manipulator 22 releases the plastic plate. At this time, the plastic plate stays on the stamping die. After the stamping template 31 drives the plastic plate to move downward, the plastic plate is pressed into the die assembly for pre-folding.

[0051] like Figure 1-4 As shown, it also includes a conveying mechanism 6 for transferring the packaging box; the conveying mechanism 6 includes: a limiting bracket 61 fixedly connected to the frame 1; a conveyor belt 62 arranged on the limiting bracket 61;

[0052] The mold assembly includes: a fixed mold 32 fixed to the frame 1; a movable mold 33 rotatably arranged on the frame 1, the movable mold 33 and the fixed mold 32 form a rectangular shape corresponding to the packaging box, the movable mold 33 is located above the conveyor belt 62, and the movable mold 33 is close to the folding mechanism 4.

[0053] Specifically, the limiting bracket 61 is located at the front and rear sides of the conveyor belt 62, the conveyor belt 62 is used to drive the packaging box to move from right to left, the fixed mold 32 is located at the front and rear sides and the right side of the conveyor belt, and the movable mold 33 is located at the left end of the rectangular shape in the mold assembly, and the movable mold 33 can rotate forward and backward;

[0054] Initially, the movable mold 33 is located above the conveyor belt 62 and forms a rectangular shape with the fixed mold 32. After the stamping mold moves down, the plastic plate is pressed into the inside of the rectangle and folded into a semi-finished packaging box, and the semi-finished packaging box stops on the conveyor belt 62. Then, the stamping template 31 moves up and resets, and the movable mold 33 is rotated so that the movable mold 33 rotates to the outside of the conveyor belt 62. The conveyor belt 62 is started, and the conveyor belt 62 transports the semi-finished packaging box to the left between the two folding plates 41. In this way, automated assembly line production can be realized.

[0055] like Figure 3-8 As shown, it also includes a driving mechanism 7, which includes: a spring assembly 71 arranged on the support 51; a turntable 72 fixedly connected to the output end of the spring assembly 71; a round rod 73 fixedly connected to the eccentric part of the turntable 72, and the round rod 73 is inserted into the piston rod 53. After the output end of the spring assembly 71 rotates, the piston rod 53 is driven to reciprocate through the round rod 73.

[0056] Specifically, a square groove is provided at the bottom end of the piston rod 53, and the round rod 73 is inserted into the square groove. After the clockwork assembly 71 releases energy, it drives the turntable 72 to rotate. During the rotation of the turntable 72, the round rod 73 drives the piston rod 53 to reciprocate in the air cylinder 52.

[0057] like Figure 5-8 As shown, the driving mechanism 7 also includes: a driven gear 74 fixedly connected to the input end of the clockwork assembly 71; a slide plate 75 slidably arranged on the support 51; a ratchet plate 76 slidably arranged on the slide plate 75, the ratchet plate 76 is meshed and connected with the driven gear 74, and the ratchet plate 76 drives the driven gear 74 to rotate in one direction after moving up and down.

[0058] Specifically, the slide plate 75 can move laterally at the top of the support 51, and the ratchet plate 76 can move up and down on the slide plate 75. Two sets of ratchets are provided on the inner side wall of the ratchet plate 76. The directions of the two sets of ratchets are opposite. The two sets of ratchets are respectively located at the front and rear sides of the driven gear 74. When the ratchet plate 76 moves up and down, the driven gear 74 is always rotated in one direction by the ratchets. At the same time, the ratchets can prevent the driven gear 74 from rotating.

[0059] When the ratchet plate 76 contacts the driven gear 74, the ratchet plate 76 moves up and down to drive the driven gear 74 to rotate, thereby tightening the spring assembly 71 to store energy; the ratchet plate 76 is moved horizontally, so that the ratchet plate 76 is separated from the driven gear 74, and the ratchet teeth are no longer restrained, so the spring assembly 71 can release energy and drive the turntable 72 to rotate.

[0060] like Figure 3-7 As shown, the driving mechanism 7 further includes a holder 77 fixedly connected to the manipulator 22 , and the ratchet plate 76 is provided with a protrusion inserted into the holder 77 .

[0061] Specifically, when the robot arm 22 moves up and down at the position of the material table 21, the ratchet plate 76 is driven to move up and down synchronously through the clamping seat 77.

[0062] It should be noted that the length of the holder 77 is selected according to the actual situation, and a push spring for pushing the ratchet plate 76 upward can also be set on the slide 75. When the manipulator 22 moves from left to right at the highest point to the top of the material platform 21, the protrusion on the holder 77 is inserted into the inside of the holder 77. Then, when the manipulator 22 moves up and down to adsorb the plastic plate on the material platform 21, the ratchet plate 76 can be driven to move up and down synchronously. Of course, the length of the holder 77 can also be extended. During the movement of the manipulator 22, the protrusion is always inserted into the holder 77. After the manipulator 22 moves to the left above the material platform 21, the plastic plate can be directly transferred to the bottom of the stamping template 31 and adsorbed by the stamping template 31.

[0063] like Figure 5-8 As shown, the driving mechanism 7 further includes a clutch member 78 fixedly connected to the support 51 , and the clutch member 78 is provided with two oblique edges for pushing the ratchet plate 76 to move laterally.

[0064] Specifically, bevel plates are provided on both sides of the clutch 78, and bevel plates are provided with bevels. Initially, the manipulator 22 is located above the material table 21, and the manipulator 22 is located at the top of its moving range. At this time, the clutch 78 pushes the ratchet plate 76 to the right through the bevel plate on the right side to separate from the driven gear 74; when the ratchet plate 76 contacts the bevel plate on the left side during the up and down movement, the bevel plate on the left side pushes the ratchet plate 76 to move left to contact the driven gear 74. During this process, the moving ratchet plate 76 can drive the driven gear 74 to rotate, thereby tightening the clockwork assembly 71.

[0065] Embodiment 2

[0066] like Figure 1-9As shown, compared with Example 1, another implementation of the present invention is: it also includes an adjustment mechanism 8, the adjustment mechanism 8 includes: a paddle assembly slidably arranged on the frame 1, the paddle assembly includes an active plate 81 and a driven plate 82, the paddle assembly is distributed on the outer side of the plastic plate on the material table 21; a linkage member 83 fixedly connected to the active plate 81, after the active plate 81 moves, the driven plate 82 is driven to move through the linkage member 83.

[0067] Specifically, the material table 21 is The right side of the material platform 21 is provided with a limit plate for limiting the position of the plastic plate, the active plate 81 is located on the left side of the material platform 21, and the two driven plates 82 are respectively located on the front and rear sides of the material platform 21; the linkage member 83 is in the shape of a tool, the right side of the linkage member 83 passes through the driven plate 82, and the front and rear ends of the right side of the linkage member 83 are provided with bevel blocks for pushing the driven plate 82 to move forward and backward. Initially, the active plate 81 and the driven plate 82 are away from the plastic plate on the material platform 21 to avoid interference with the action of taking away the plastic plate; the manipulator 22 absorbs the topmost plastic plate and takes it away. After walking, the air cylinder 52 blows and sucks to make the excess plastic plate adhering to the bottom of the plastic plate to be folded fall off, and the plastic plate that has fallen off falls back on the material table 21, but the position may be deviated. In order not to affect the subsequent folding work, it is necessary to correct the position of the fallen plastic plate. At this time, the active plate 81 is moved to the right. After the active plate 81 moves to the right, it drives the front and rear driven plates 82 to approach the material table 21 through the linkage 83, thereby correcting the plastic plate that has fallen on the material table 21, thereby improving the problem of affecting the folding result due to the position deviation of the plastic plate.

[0068] like Figure 3-9 As shown, the adjustment mechanism 8 also includes a plurality of unloading plates 84 slidably arranged on the frame 1. The unloading plates 84 are distributed on the outside of the mold assembly. After the unloading plates 84 move, they squeeze the packaging box located in the mold assembly.

[0069] Specifically, plastic materials are generally elastic. After the flat plastic plate is folded into a packaging box, the plastic may rebound due to its own properties, thereby affecting the shape stability of the packaging box. For this purpose, a force unloading plate 84 is provided. Preferably, there are but are not limited to three force unloading plates 84, which are respectively located on the front and rear sides and the right side of the mold assembly. A notch is provided on the limiting bracket 61, and a notch is also provided on the right side of the fixed mold 32. The force unloading plate 84 can pass through the notch to contact the semi-finished packaging box in the mold assembly.

[0070] After the punching template 31 moves downward and presses the plastic plate into the mold assembly to pre-fold it into a semi-finished packaging box, there may be residual rebound force in the semi-finished packaging box. The force unloading plate 84 is started to move toward the inside of the mold assembly to squeeze the side wall of the pre-folded semi-finished packaging box. By setting the force unloading plate 84 to squeeze the packaging box from the outside to the inside, the residual rebound force in the packaging box can be removed, thereby further improving the folding effect of the packaging box.

[0071] like Figure 5-9 As shown, the adjustment mechanism 8 also includes: a direction adjustment gear 85 rotatably arranged on the frame 1; a rack plate 86 is fixedly connected to the active plate 81 and one of the unloading plates 84, and the rack plate 86 is meshedly connected with the direction adjustment gear 85; the active plate 81 and the remaining unloading plates 84 are transmitted through a linkage 83.

[0072] Specifically, the unloading plate 84 on the right side and the active plate 81 achieve synchronous reverse movement through the adjustment gear 85, the left side of the linkage member 83 passes through the unloading plate 84, and the front and rear ends of the left side of the linkage member 83 are provided with bevel blocks for pushing the unloading plate 84 to move forward and backward.

[0073] like Figure 3-9 As shown, the adjustment mechanism 8 also includes: a magnetic block 87 fixedly connected to the unloading plate 84; a magnetic block 88 fixedly connected to the stamping template 31, the magnetic properties of the magnetic block 88 and the side opposite to the magnetic block 1 87 are different, and after the stamping template 31 moves downward, the unloading plate 84 is driven close to the packaging box by the suction force between the magnetic block 88 and the magnetic block 1 87; and a reset member 89 for pushing the active plate 81 away from the material table 21.

[0074] Specifically, the reset member 89 is preferably but not limited to a spring device, and the two ends of the spring device are respectively connected to the frame 1 and the active plate 81. Initially, the reset member 89 pushes the active plate 81 to move left. At this time, the active plate 81 and the driven plate 82 are both away from the material table 21, and the unloading plate 84 is away from the mold assembly; the stamping template 31 moves down, and after the plastic plate is pressed into the mold assembly and pre-folded into a semi-finished packaging box, the magnetic block 28 moves down to align with the magnetic block 1 87. The suction force between the magnetic blocks drives the unloading plate 84 on the right to move left, and the unloading plate 84 drives the active plate 81 to move right through the adjustment gear 85. After the active plate 81 moves right, it approaches the material table 21, and drives the front and rear unloading plates 84 to move toward the mold assembly through the linkage member 83 to unload the semi-finished packaging box. At the same time, the active plate 81 drives the driven plate 82 to approach the material table 21 to adjust the position of the plastic plate that has fallen on the material table 21.

[0075] Working principle: When folding the plastic plates, the plastic plates to be folded are stacked on the material table 21, and the manipulator 22 is started to move downward. The manipulator 22 drives the ratchet plate 76 to move downward through the clamping seat 77. When the ratchet plate 76 moves downward and contacts the left bevel plate in the clutch 78, the left bevel plate pushes the ratchet plate 76 to move leftward until it contacts the driven gear 74. After the manipulator 22 and the ratchet plate 76 continue to move downward, the ratchet plate 76 drives the driven gear 74 to rotate, tightens the clockwork assembly 71 and stores energy. At the same time, the ratchet can prevent the driven gear 74 from rotating.

[0076] After the manipulator 22 absorbs the topmost plastic plate on the material platform 21, it moves upward. After the manipulator 22 and the ratchet plate 76 move to the top, the ratchet plate 76 separates from the left bevel plate in the clutch 78 and contacts the right bevel plate. The right bevel plate pushes the ratchet plate 76 to move rightward to separate from the driven gear 74. Without the restraint of the ratchet, the clockwork assembly 71 can release energy and drive the turntable 72 to rotate. During the rotation of the turntable 72, the piston rod 53 is driven by the round rod 73 to reciprocate in the air cylinder 52. The air cylinder 52 continuously blows and extracts air on the bottom of the plastic plate. The airflow generated by the air cylinder 52 will cause the plastic plate adhered below to shake, causing the excess plastic plate to fall off, thereby completing the work of separating the excess plastic plates adhered, improving the problem of affecting the folding work due to the adhesion of the plastic plates, and the plastic plates that fall off fall back onto the material platform 21.

[0077] The manipulator 22 moves to the left, transfers the plastic sheet to the bottom of the stamping template 31, and the plastic sheet is attached to the bottom of the stamping template 31. The stamping template 31 absorbs the plastic sheet, and then the manipulator 22 releases the plastic sheet. At this time, the plastic sheet stays on the stamping die. After the stamping template 31 drives the plastic sheet to move downward, the plastic sheet is pressed into the die assembly to perform pre-folding work, and the plastic sheet is preliminarily folded into a semi-finished packaging box, and the semi-finished packaging box is parked on the conveyor belt 62;

[0078] After the punching template 31 moves down, the second magnetic block 88 moves down to align with the first magnetic block 87, and the suction force between the magnetic blocks drives the unloading plate 84 on the right to move left, and the unloading plate 84 adjusts to the gear 85 to drive the active plate 81 to move right. After the active plate 81 moves right, it approaches the material table 21, and drives the front and rear unloading plates 84 to move into the mold assembly through the linkage 83 to unload the semi-finished packaging box. At the same time, the active plate 81 drives the driven plate 82 to approach the material table 21 to adjust the position of the plastic plate dropped on the material table 21;

[0079] Then, the punching template 31 moves up and resets, and the movable mold 33 is rotated so that the movable mold 33 rotates to the outside of the conveyor belt 62, and the conveyor belt 62 is started. The conveyor belt 62 transports the semi-finished packaging box to the left to between the two folding plates 41; the folding plate 41 moves toward the inside of the semi-finished packaging box, and pushes the hinge to fold toward the inside of the semi-finished packaging box, so that it is folded into a packaging box, thus completing the folding of the packaging box; repeating the above actions can realize automated assembly line production, and in the process of assembly line production, it can automatically complete the functions of separating and adjusting the position of excess plastic plates that may be adhered, and eliminating the elastic force of the pre-folded packaging box, and there is no need to additionally set up an electrical drive system for separation, adjustment and elastic force elimination, with a high degree of automation, simplified production line structure, and easy use.

[0080] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic plastic packaging box folding device, comprising a frame (1), wherein a feeding mechanism (2), a pre-folding mechanism (3) and a folding mechanism (4) are sequentially arranged on the frame (1); The feeding mechanism (2) comprises: A material table (21) for placing plastic plates; A manipulator (22) movably arranged on the frame (1), wherein a suction cup (221) for grasping the plastic plate is provided at the bottom end of the manipulator (22); The pre-folding mechanism (3) comprises: A mold assembly arranged on the frame (1); A punching template (31) is slidably arranged on the frame (1), the punching template (31) is located above the mold assembly, the manipulator (22) transports the plastic plate to the top of the mold assembly, and after the punching template (31) moves downward, the plastic plate is pressed into the interior of the mold assembly, and the plastic plate is folded into a semi-finished packaging box; The folding mechanism (4) comprises a folding plate (41) movably arranged on the frame (1), and the folding plate (41) is used to fold the side edges of the semi-finished product packaging box inwards to shape them; The invention is characterized in that it also comprises a separation mechanism (5), wherein the separation mechanism (5) comprises: A support (51) fixedly connected to the frame (1); An air cylinder (52) is fixedly connected to the support (51) in an inclined manner, a piston rod (53) is movably inserted inside the air cylinder (52), and the air nozzle in the air cylinder (52) faces upward. After the piston rod (53) performs piston movement inside the air cylinder (52), the air cylinder (52) blows and sucks the bottom of the plastic plate grasped by the robot (22).

2. The automatic plastic packaging box folding device according to claim 1, characterized in that: It also includes a conveying mechanism (6) for transferring the packaging box; The transmission mechanism (6) comprises: A limiting bracket (61) fixedly connected to the frame (1); A conveyor belt (62) arranged on the position-limiting bracket (61); The mold assembly comprises: A fixed mold (32) fixedly connected to the frame (1); The movable mold (33) arranged on the frame (1) is rotated, the movable mold (33) and the fixed mold (32) form a rectangular shape corresponding to the packaging box, the movable mold (33) is located above the conveyor belt (62), and the movable mold (33) is close to the folding mechanism (4).

3. The automatic plastic packaging box folding device according to claim 2, characterized in that: It also includes a driving mechanism (7), wherein the driving mechanism (7) includes: A clockwork assembly (71) disposed on the support (51); A rotating disk (72) fixedly connected to the output end of the clockwork assembly (71); A round rod (73) is fixedly connected to the eccentric position of the rotating disk (72), and the round rod (73) is inserted into the piston rod (53). After the output end of the clockwork assembly (71) rotates, the piston rod (53) is driven to reciprocate through the round rod (73).

4. The automatic plastic packaging box folding device according to claim 3, characterized in that: The driving mechanism (7) further comprises: A driven gear (74) fixedly connected to the input end of the clockwork assembly (71); A slide plate (75) slidably arranged on the support (51); A ratchet plate (76) is slidably arranged on the slide plate (75), and the ratchet plate (76) is meshedly connected with the driven gear (74). After the ratchet plate (76) moves up and down, it drives the driven gear (74) to rotate in one direction.

5. The automatic plastic packaging box folding device according to claim 4, characterized in that: The driving mechanism (7) further comprises a holder (77) fixedly connected to the manipulator (22), and the ratchet plate (76) is provided with a protrusion inserted into the holder (77).

6. The automatic plastic packaging box folding device according to claim 5, characterized in that: The driving mechanism (7) further comprises a clutch member (78) fixedly connected to the support (51), and the clutch member (78) is provided with two oblique edges for pushing the ratchet plate (76) to move laterally.

7. The automatic plastic packaging box folding device according to claim 6, characterized in that: It also includes an adjustment mechanism (8), wherein the adjustment mechanism (8) includes: A paddle assembly slidably arranged on the frame (1), the paddle assembly comprising an active plate (81) and a driven plate (82), the paddle assembly being distributed on the outer side of the plastic plate on the material platform (21); A linkage member (83) is fixedly connected to the active plate (81), and when the active plate (81) moves, the driven plate (82) is driven to move via the linkage member (83).

8. The automatic plastic packaging box folding device according to claim 7, characterized in that: The adjustment mechanism (8) further comprises a plurality of unloading plates (84) slidably arranged on the frame (1), wherein the unloading plates (84) are distributed on the outside of the mold assembly, and when the unloading plates (84) move, they squeeze the packaging box located in the mold assembly.

9. The automatic plastic packaging box folding device according to claim 8, characterized in that: The adjustment mechanism (8) further comprises: The steering gear (85) arranged on the frame (1) is rotated; the active plate (81) and one of the unloading plates (84) are respectively fixedly connected with a rack plate (86), and the rack plate (86) is meshingly connected with the steering gear (85); The active plate (81) and the remaining unloading plates (84) are transmitted via the linkage member (83).

10. The automatic plastic packaging box folding device according to claim 9, characterized in that: The adjustment mechanism (8) further comprises: A magnetic block (87) fixedly connected to the force unloading plate (84); A second magnetic block (88) fixedly connected to the punching template (31), wherein the second magnetic block (88) and the first magnetic block (87) have different magnetic properties on one side of the surface opposite to the first magnetic block. After the punching template (31) moves downward, the suction force between the second magnetic block (88) and the first magnetic block (87) drives the force unloading plate (84) close to the packaging box. A reset member (89) is used to push the active plate (81) away from the material platform (21).

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