Eight-claw rotating drum mechanism of soap boxing machine

Abstract

The application discloses a soap boxing machine eight-claw rotary drum mechanism and relates to the technical field of soap boxing. The rotary drum mechanism comprises a pre-pulling box mechanism, a rotary drum body and a forming and holding mechanism. The rotary drum body rotates clockwise, the pre-pulling box mechanism rotates counterclockwise, the paper box in a folded state is sucked out through the rotary drum body, the paper box is pre-pulled and unfolded through cooperation of the pre-pulling box mechanism and the rotary drum body, and the paper box is unfolded and formed through the forming and holding mechanism. The rotary drum body comprises an air path assembly, a fixed disc, a rotating disc, a cam connecting rod suction disc assembly and an auxiliary opening assembly. The pre-pulling box mechanism comprises a rotating shaft, a rotating air distribution block, a connecting rod assembly and a second suction disc. The forming and holding mechanism comprises two groups of forming strips which are arranged side by side. The application has the advantages that cooperation of the mechanisms is accurate and stable, the box sucking action is flexible and accurate, the box opening action of the paper box is smoother, the stability of air path switching is improved, the box opening efficiency and quality are improved, and the production efficiency of the boxing machine is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of soap cartoning, in particular to an octagonal drum mechanism of a soap cartoning machine. Background Art

[0002] The soap cartoning machine is an essential piece of equipment in a soap production line. Its cartoning speed directly impacts the production capacity of the entire line. The core component of a cartoning machine is its box-sucking drum, whose speed and stability determine its production efficiency. Currently, in the soap packaging and cartoning industry, especially on automated production lines, most machines operate at speeds of 200 boxes per minute or less. These machines have low box opening efficiency and high scrap rates, often exceeding 3%. The bottleneck lies in the drum. Importing imported equipment is extremely expensive, including spare parts, making it difficult to scale up and adapt to high-speed soap production lines.

[0003] The main reasons for the low efficiency and high scrap rate of existing rotary drum carton opening systems are: the poor stability of the air circuit control switching system for carton suction and separation, which requires a certain switching time; the inflexible movement of the suction cup that holds the carton, which affects the quality and efficiency of carton opening; the imprecise and unstable coordination between the various carton opening mechanisms, resulting in an unsmooth opening of the carton; and the slow vacuum breaking reaction speed, which wastes time and leads to slow opening speed. Research and development of an eight-claw rotary drum mechanism that can improve opening speed and quality is needed, ensuring high-speed and stable rotary drum opening and ensuring the production efficiency of the cartoning machine. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an octagonal drum mechanism for a soap cartoning machine, which can solve the problems of low carton opening efficiency and high scrap rate of the drum in the prior art.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows: the eight-claw drum mechanism of the soap cartoning machine is installed between the box feeding line and the box clamping chain, and is used to suck out the folded paper box fed by the box feeding line, pre-stretch and unfold it into shape, and then clamp it through the box clamping chain and transport it to the rear end. It is characterized in that it includes a pre-box pulling mechanism, a drum body and a forming holding mechanism, and the pre-box pulling mechanism, the drum body and the forming holding mechanism are all installed on a main frame, the drum body rotates clockwise, and the pre-box pulling mechanism rotates counterclockwise, sucking out the folded paper box through the drum body, pre-stretching and unfolding the paper box through the cooperation of the pre-box pulling mechanism and the drum body, and unfolding and forming the paper box through the forming holding mechanism;

[0006] The drum body is arranged vertically, with the horizontal symmetry line of the drum body as a reference, one side of the horizontal symmetry line is at the 0° position, the other side is at the 180° position, the top of the longitudinal symmetry line of the drum body is at the 90° position, and the bottom is at the 270° position, the box feeding line is located at the 30° position of the drum body, the pre-box pulling mechanism is located at the 110° position of the drum body, and the forming and holding mechanism is located at the 180° position of the drum body;

[0007] The drum body includes an air circuit assembly, a fixed plate, a rotating plate, a cam connecting rod suction cup assembly and an auxiliary expansion assembly. The fixed plate is fixedly mounted on the main frame, the air circuit assembly is mounted on the fixed plate, the rotating plate is arranged on one side of the fixed plate, and the cam connecting rod suction cup assembly and the auxiliary expansion assembly are mounted on the rotating plate.

[0008] The rotating disk is mounted on a rotating disk connecting shaft, which is mounted inside the inner hole of the fixed disk via a bearing. A main shaft is mounted in the inner hole of the rotating disk connecting shaft via a bearing. The air circuit assembly is fixedly mounted on the main shaft, and the air circuit assembly is fixed to the main frame via a torque arm.

[0009] The air circuit assembly includes a cylinder, a vacuum air distribution block, an air distribution sleeve assembly and a vacuum inlet. The vacuum inlet is located at one end of the air circuit assembly and is connected to the cam connecting rod suction cup assembly through a vacuum chamber, a vacuum air distribution block and an air distribution sleeve assembly. There are 8 cylinders. The 8 cylinders and the vacuum air distribution block control the vacuum on and off. The 8 cylinders respectively control the corresponding 8 groups of cam connecting rod suction cup assemblies.

[0010] The cam-link sucker assembly consists of a cam and 8 sets of evenly distributed and identical connecting sucker assemblies. The cam is fixed to one side of the fixed disk and is arranged between the fixed disk and the rotating disk.

[0011] The rotating disk is provided with 8 groups of evenly distributed bearing holes for installing the connecting rod suction cup assembly, the connecting rod suction cup assembly includes a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod and a first suction cup, the third connecting rod, the fourth connecting rod, the fifth connecting rod and the sixth connecting rod constitute a first four-bar linkage, the sixth connecting rod is installed with a first suction cup, the side surface of the cam is provided with two grooves, the first connecting rod is connected to a first cam bearing, the second connecting rod is connected to a second cam bearing, the first cam bearing and the second cam bearing respectively roll in the two grooves of the cam;

[0012] The auxiliary expansion assembly includes a support rod, a connecting rod and a mounting plate. The mounting plate is fixed to the side of the rotating plate away from the fixed plate through the connecting rod. The mounting plate rotates clockwise with the rotating plate. Eight support rods are evenly mounted on the mounting plate.

[0013] The pre-pull box mechanism includes a rotating shaft, a rotating air distribution block, a connecting rod assembly and a second suction cup, a rotating air distribution block is fixedly installed on one side of the rotating shaft, and the connecting rod assembly consists of a seventh connecting rod, an eighth connecting rod, a ninth connecting rod and a tenth connecting rod to form a second four-bar linkage, the seventh connecting rod is fixedly installed on the other side of the rotating shaft, the ninth connecting rod is sleeved and installed on a column, the eighth connecting rod and the tenth connecting rod connect the seventh connecting rod and the ninth connecting rod, the second suction cup is installed on the eighth connecting rod, the rotating shaft rotates counterclockwise to drive the seventh connecting rod to rotate counterclockwise, and the seventh connecting rod drives the eighth connecting rod and the second suction cup to swing;

[0014] The molding and maintaining mechanism comprises two groups of molding bars, which are arranged side by side.

[0015] Furthermore, the rotating disk connecting shaft of the drum body and the rotating shaft of the pre-tensioned box mechanism are driven to rotate by the drum synchronous pulley and the pre-tensioned box mechanism synchronous pulley respectively, and the drum synchronous pulley and the pre-tensioned box mechanism synchronous pulley are driven to rotate by the main motor and the synchronous belt.

[0016] Furthermore, the air distribution sleeve assembly includes a fixed air distribution sleeve, a rotating air distribution sleeve, and an intermediate connecting sleeve. The fixed air distribution sleeve is installed on the main shaft. The fixed air distribution sleeve is provided with 9 interfaces, including 8 first vacuum interfaces and 1 first small air blowing interface. The first vacuum interface is connected to the vacuum air pipe connected to the vacuum air distribution block. A first small air blowing air distribution block is also provided between the vacuum air distribution block and the main shaft. The first small air blowing interface is connected to the blowing pipe connected to the small air blowing air distribution block. The interface between the blowing pipe and the vacuum air pipe is provided with a filter.

[0017] An O-ring is provided between the fixed air distribution sleeve and the intermediate connecting sleeve. The intermediate connecting sleeve is fixedly mounted on the fixed air distribution sleeve. The rotating air distribution sleeve is sleeved on the intermediate connecting sleeve, and the rotating air distribution sleeve is mounted on the rotating disk. The vacuum enters the vacuum chamber from the vacuum inlet, passes through the vacuum air distribution block, and reaches the fixed air distribution sleeve through the vacuum air pipe. The vacuum is then sent to the rotating air distribution sleeve by the intermediate connecting sleeve, and is then transported to the corresponding connecting rod suction cup assembly by the rotating air distribution sleeve.

[0018] A piston hole is provided in the vacuum distribution block, a vent piston is installed in the piston hole, and a return spring is installed at one end of the vent piston. The output rod of the cylinder pushes out to contact the vent piston, blocking the piston hole and pushing the vent piston to one side to compress the return spring. At this time, the vacuum circuit between the vacuum chamber and the vacuum air pipe is cut off;

[0019] The vent piston is provided with a vacuum breaking hole, and the vacuum distribution block is provided with an exhaust hole. After the vent piston is pushed to one side by the cylinder, the vacuum breaking hole on the vent piston is communicated with the exhaust hole on the vacuum distribution block, and the closed vacuum pipeline from the first suction cup of the connecting rod suction cup assembly to the vent piston is directly communicated with the atmosphere, breaking the vacuum in the first suction cup and separating the first suction cup from the paper box;

[0020] The cylinder is in a vacuum disconnected state. When the drum body rotates to 20 degrees, the cylinder is actuated to open the passage between the vacuum chamber and the vacuum distribution block, and the first suction cup is vacuumed. When all actions of opening the carton are completed and the drum body rotates to 210 degrees, the cylinder is actuated again to disconnect the passage in the vacuum distribution block, disconnecting the vacuum of the first suction cup, and the first suction cup is separated from the carton.

[0021] The air blowing interface is controlled by a solenoid valve.

[0022] Furthermore, the connecting rod suction cup assembly includes a gear shaft, the sixth connecting rod is fixedly locked on the gear shaft, the second connecting rod is provided with a sector gear, the sector gear is engaged with the gear shaft, the fourth connecting rod is a sleeve-type connecting rod, the fourth connecting rod is mounted on the gear shaft through a bearing, the first connecting rod is mounted around one end of the fourth connecting rod, and the first connecting rod and the fourth connecting rod are fixedly arranged, and the third connecting rod and the fifth connecting rod connect the fourth connecting rod and the sixth connecting rod;

[0023] The second cam bearing drives the sector gear and the gear shaft to move, the gear shaft drives the sixth connecting rod to rotate around the center of the gear shaft, the first cam bearing drives the first connecting rod to move, the first connecting rod drives the fourth connecting rod to rotate around the center of the gear shaft, and the first four-bar linkage drives the first suction cup to achieve position change.

[0024] Furthermore, an intermediate transition ring and an interface ring are provided on one side of the rotating air distribution block, the intermediate transition ring is fixed on the rotating shaft and rotates with the rotating shaft, the interface ring is provided with a second vacuum interface and a second small air blowing interface, the intermediate transition ring and the rotating air distribution block are respectively provided with corresponding vent holes, a center hole is provided inside the rotating shaft, a vent pipe is installed in the center hole, the vent pipe connects the rotating air distribution block with the second suction cup, the rotation of the rotating shaft drives the rotating air distribution block and the intermediate transition ring to rotate, the interface ring is fixed and does not rotate, the vent holes on the intermediate transition ring are in turn connected to the vacuum outlet and the small air blowing outlet on the interface ring to realize the on-off and switching of vacuum and small air blowing, and control the switching of vacuum and small air blowing of the second suction cup.

[0025] Furthermore, the forming strips include forming guide strips and forming guard strips. The forming guide strips and forming guard strips of each group of forming strips are connected. The forming guide strips are connected to a forming frame. The forming frame is provided with a passive baffle. The forming frame is connected to the main frame through an adjusting clamping column. The adjusting clamping column is provided with an adjusting slot, and the adjusting clamping column is rotatably connected to the main frame.

[0026] The advantages of the present invention are as follows: the cartons are stored and conveyed by the carton conveying line; the folded cartons are automatically sucked out, pre-stretched, and unfolded by the eight-claw rotary drum mechanism; the unfolded cartons are clamped by the clamping chain and conveyed to the rear end; the coordination between the various mechanisms is more precise and stable, the carton opening action is smoother, the carton opening efficiency and quality are improved, and the high speed and stability of the eight-claw rotary drum can ensure the production efficiency of the cartoning machine;

[0027] The drum body and the pre-box-pulling mechanism are both driven by synchronous pulleys. When the pre-box-pulling mechanism rotates one circle, the drum body rotates 1 / 8 circle, i.e., one suction cup position, to ensure the accuracy of the pre-box-pulling and drum body matching. Both the connecting rod suction cup assembly and the pre-box-pulling mechanism adopt a four-bar linkage, which is flexible and precise in movement, thus improving the quality and efficiency of box opening. In addition, the structure of 8 sets of connecting rod suction cup assemblies can reduce the rotation speed of the drum body and extend the life of the drum.

[0028] The mechanical structure gas circuit control switching system and vacuum breaking structure are adopted to save switching time. While cutting off the vacuum of the suction cup, the passage between the suction cup and the outside atmosphere is connected, avoiding the time waste caused by the electronic control reaction time and improving the stability of the gas circuit switching. The gas distribution system is equipped with an intermediate transition ring and an intermediate connecting sleeve to ensure the airtightness and stability of the gas circuit system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of the box opening mechanism of the soap box packing machine;

[0030] Figure 2 This is a schematic diagram of the carton opening and forming of the present invention;

[0031] Figure 3 It is a structural schematic diagram of the eight-claw drum mechanism of the soap cartoning machine of the present invention;

[0032] Figure 4 This is a position distribution diagram of the drum body, pre-stretching box and forming holding mechanism of the present invention;

[0033] Figure 5 It is a structural schematic diagram of the drum body of the present invention;

[0034] Figure 6 is a cross-sectional view of the drum body of the present invention;

[0035] Figure 7It is a structural schematic diagram of the gas path component of the drum body of the present invention;

[0036] Figure 8 is a cross-sectional view of the air path assembly of the drum body of the present invention;

[0037] Figure 9 This is a diagram showing the interface distribution of the fixed gas distribution sleeve of the drum body of the present invention;

[0038] Figure 10 It is a structural schematic diagram of the rotary gas distribution sleeve of the drum body of the present invention;

[0039] Figure 11 It is a partial enlarged view of the air path component of the drum body of the present invention;

[0040] Figure 12 This is a schematic structural diagram of the vacuum gas distribution block in the drum body gas circuit assembly of the present invention;

[0041] Figure 13 for Figure 12 DD cross-sectional view;

[0042] Figure 14-15 It is a schematic structural diagram of the cam connecting rod suction cup assembly of the drum body of the present invention;

[0043] Figure 16 It is a schematic structural diagram of the connecting rod suction cup assembly of the drum body of the present invention;

[0044] Figure 17 This is a schematic structural diagram of the auxiliary expansion assembly of the drum body of the present invention;

[0045] Figure 18 It is a structural schematic diagram of the pre-pull box mechanism of the present invention;

[0046] Figure 19 It is a schematic diagram of the driving structure of the rotary disk connecting shaft of the rotary drum body and the rotating shaft of the pre-box-pulling mechanism of the present invention;

[0047] Figure 20 It is a cross-sectional view of the pre-pull box mechanism of the present invention;

[0048] Figure 21 It is a partial structural exploded schematic diagram of the pre-pull box mechanism of the present invention;

[0049] Figure 22 It is a structural schematic diagram of the molding and holding mechanism of the present invention;

[0050] Figure 23 A schematic diagram of the adjustment direction of the clamping column of the molding and holding mechanism of the present invention;

[0051] Figure 24 It is a structural schematic diagram of the adjusting clamping column of the molding and holding mechanism of the present invention;

[0052] Figure 25 This is a schematic diagram of the starting position of the eight-claw drum mechanism of the soap cartoning machine of the present invention;

[0053] Figure 26 This is a diagram showing the state in which the connecting rod suction cup assembly approaches the paper box after the rotating drum body of the present invention rotates;

[0054] Figure 27 This is a diagram showing the first suction cup adsorbing the paper box after the rotating drum body of the present invention rotates;

[0055] Figure 28 This is a state diagram of the first suction cup pulling the paper box out of the storage position after the rotating drum body of the present invention rotates;

[0056] Figure 29 This is a diagram showing a state in which the first suction cup absorbs the paper box and moves away from the axis of the drum body after the drum body rotates;

[0057] Figure 30 This is a state diagram of the present invention when the first suction cup drives the paper box to the pre-pull box position after the rotating drum body rotates;

[0058] Figure 31 This is a diagram showing a state in which the second suction cup of the pre-opening box mechanism of the present invention moves away from the paper box to pre-open the paper box;

[0059] Figure 32 This is a diagram showing a state in which the supporting rods of the rotary drum body of the present invention rotate to fully open the pre-opened paper box;

[0060] Figure 33 A schematic diagram of the forming and holding mechanism of the present invention keeping the carton in an open state;

[0061] Figure 34 This is a state diagram of the soap cartoning machine of the present invention when the eight-claw drum mechanism completes the paper box opening action;

[0062] Figure 35 This is a timing diagram of the air circuits of the drum body and the pre-box-pulling mechanism of the eight-claw drum mechanism of the soap cartoning machine of the present invention. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The following examples can enable those skilled in the art to understand the present invention more comprehensively, but the present invention is not limited to the scope of the embodiments.

[0064] This specific implementation adopts the following technical solutions: Figure 1As shown in the figure, the eight-claw drum mechanism of the soap cartoning machine is installed between the box feeding line 100 and the box clamping chain 200. It is used to suck out the folded paper box fed by the box feeding line 100, pre-stretch and unfold it into shape, and then clamp it through the box clamping chain 200 to transport it to the rear end. The process of opening and forming the paper box is as follows: Figure 2 .

[0065] like Figure 3 As shown, the eight-claw drum mechanism of the soap cartoning machine includes a pre-boxing mechanism 2, a drum body 1 and a forming and holding mechanism 3. The pre-boxing mechanism 2, the drum body 1 and the forming and holding mechanism 3 are all installed on a main frame. The drum body 1 rotates clockwise and the pre-boxing mechanism 2 rotates counterclockwise. The folded paper box is sucked out through the drum body 1, and the paper box is pre-stretched and unfolded through the cooperation of the pre-boxing mechanism 2 and the drum body 1. The paper box is unfolded and formed through the forming and holding mechanism 3.

[0066] like Figure 4 As shown, the drum body 1 is arranged vertically, with the horizontal symmetry line of the drum body 1 as a reference, one side of the horizontal symmetry line is at the 0° position, and the other side is at the 180° position, the top of the longitudinal symmetry line of the drum body 1 is at the 90° position, and the bottom is at the 270° position, the box feeding line 100 is located at the 30° position of the drum body 1, the pre-boxing mechanism 2 is located at the 110° position of the drum body 1, and the forming and holding mechanism 3 is located at the 180° position of the drum body 1.

[0067] like Figure 5 As shown, the drum body 1 includes an air circuit assembly 11, a fixed plate 12, a rotating plate 13, a cam connecting rod suction cup assembly 14 and an auxiliary expansion assembly 15. The fixed plate 12 is fixedly mounted on the main frame 19, the air circuit assembly 11 is mounted on the fixed plate 12, the rotating plate 13 is arranged on one side of the fixed plate 12, the cam connecting rod suction cup assembly 14 and the auxiliary expansion assembly 15 are mounted on the rotating plate 13 and rotate clockwise with the rotating plate 13.

[0068] like Figure 6 As shown, the rotating disk 13 is mounted on the rotating disk connecting shaft 16, which is mounted inside the inner hole of the fixed disk 12 through a bearing. A main shaft 17 is mounted in the inner hole of the rotating disk connecting shaft 16 through a bearing. The air circuit assembly 11 is fixedly mounted to the main shaft 17, and the air circuit assembly 11 is fixed to the main frame 19 through a torque arm 18. The cam connecting rod suction cup assembly 14 consists of a cam 141 and 8 groups of evenly distributed and identical connecting suction cup assemblies 142. The cam 141 is fixed to one side of the fixed disk 12 and is arranged between the fixed disk 12 and the rotating disk 13. The air circuit assembly 11, the fixed disk 12, and the main shaft 17 are all kept fixed relative to the main frame 19. The fixed disk 12 is an aluminum casting, and the casting has high processability and stability after heat treatment to relieve stress.

[0069] A rotating disk driving wheel 110 is installed on one side of the rotating disk connecting shaft 16, and the rotating disk driving wheel 110 drives the rotating disk 13 to rotate through the rotating disk connecting shaft 16. The rotating disk 13 is an aluminum casting, and the casting has high processability and stability after heat treatment to relieve stress.

[0070] like Figure 7 As shown, the air circuit assembly 11 includes a cylinder 111, a vacuum air distribution block 112, an air distribution sleeve assembly and a vacuum inlet 113. The vacuum inlet 113 is located at one end of the air circuit assembly 11. There are 8 cylinders 111. The 8 cylinders 111 and the vacuum air distribution block 112 control the vacuum on and off. The 8 cylinders 111 respectively control the corresponding 8 groups of cam connecting rod suction cup assemblies 14; the air distribution sleeve assembly includes a fixed air distribution sleeve 114, a rotating air distribution sleeve 115, and an intermediate connecting sleeve 116.

[0071] like Figures 8-10 As shown, the fixed air distribution sleeve 114 is installed on the main shaft 17, and the vacuum inlet 113 is connected to the cam connecting rod suction cup assembly 14 through the vacuum chamber 117, the vacuum air distribution block 112, and the air distribution sleeve assembly; 9 interfaces are provided on the fixed air distribution sleeve 114, and the 9 interfaces include 8 first vacuum interfaces 1141 and 1 first small air blowing interface 1142. The first vacuum interface 1141 is connected to the vacuum air pipe 118 connected from the vacuum air distribution block 112. A first small air blowing air distribution block 119 is also provided between the vacuum air distribution block 112 and the main shaft 17. The first small air blowing interface 1142 is connected to the air blowing pipe connected from the small air blowing air distribution block 119. The first small air blowing interface 1142 is controlled by a solenoid valve. The interface between the air blowing pipe and the vacuum air pipe 118 is equipped with a filter to prevent dust and paper scraps from entering and clogging the pipeline.

[0072] Intermediate connecting sleeve 116 is fixed to fixed air distribution sleeve 114 and is made of a special engineering plastic that withstands long-term metal-to-metal contact and friction, resulting in extremely high wear resistance. Rotating air distribution sleeve 115 is mounted on rotating disk 13 and in contact with intermediate connecting sleeve 116. Rotating air distribution sleeve 115 has eight interfaces, corresponding to eight sets of first suction cups 1427. Vacuum is delivered to the corresponding first suction cups 1427 via air pipes. The coordination of the three mechanical structures ensures that each vacuum is accurately distributed to the corresponding suction cup, and that the vacuum is always switched on and off at the same angle.

[0073] An O-ring is provided between the fixed air distribution sleeve 114 and the intermediate connecting sleeve 116 to ensure the stability of vacuum transmission. The intermediate connecting sleeve 116 is fixedly installed on the fixed air distribution sleeve 114, and the rotating air distribution sleeve 115 is sleeved on the intermediate connecting sleeve 116, and the rotating air distribution sleeve 115 is installed on the rotating disk 13. The vacuum enters the vacuum chamber 117 from the vacuum inlet 113, passes through the vacuum air distribution block 112, and reaches the fixed air distribution sleeve 114 through the vacuum air pipe 118, and then the vacuum is sent to the rotating air distribution sleeve 115 by the intermediate connecting sleeve 116, and is transported to the corresponding connecting rod suction cup assembly 142 by the rotating air distribution sleeve 115.

[0074] like Figure 11-13 As shown, eight piston holes 1121 are distributed in the vacuum distribution block 112, and ventilation pistons 1110 are respectively installed in the eight piston holes 1121. A return spring 1111 is installed at one end of the ventilation piston 1110. The output rod of the cylinder 111 pushes out and contacts the ventilation piston 1110, blocking the piston hole and pushing the ventilation piston 1110 to one side to compress the return spring 1111. At this time, the vacuum circuit between the vacuum chamber 117 and the vacuum air pipe 118 is cut off.

[0075] A vacuum breaking hole 1122 is provided on the ventilation piston 1110, and 8 exhaust holes 1123 are distributed on the vacuum distribution block 112. After the ventilation piston 1110 is pushed to one side by the cylinder 111, the vacuum breaking hole 1122 on the ventilation piston 1110 is communicated with the exhaust holes 1123 on the vacuum distribution block 112, and the closed vacuum pipeline from the first suction cup 1427 of the connecting rod suction cup assembly 142 to the ventilation piston 1110 is directly communicated with the atmosphere, breaking the vacuum in the first suction cup 1427, so that the first suction cup 1427 is separated from the paper box.

[0076] Breaking the vacuum is the final, crucial step in opening a carton. Its speed directly determines the speed of the drum's opening process. A mechanical vacuum breaker simultaneously disconnects the suction cup from the vacuum while simultaneously connecting it to the outside atmosphere, eliminating the time lost due to electronically controlled reaction times. The vacuum distribution block 112 is constructed of cast copper, offering excellent wear resistance and stable performance. The vent piston 1110 is made of alloy steel and, after undergoing a quenching process, achieves high hardness and excellent wear resistance.

[0077] The cylinder 111 is pushed out to the vacuum disconnected state. When the drum body 1 rotates to 20°, the cylinder 111 acts to open the passage between the vacuum chamber 117 and the vacuum distribution block 112, and the corresponding first suction cup 1427 obtains vacuum. When all the actions of opening the carton are completed and the drum body 1 rotates to 210°, the cylinder 111 acts again to disconnect the passage in the vacuum distribution block 112, and the solenoid valve acts to blow small air into the rotating distribution sleeve 115. Its function is to assist the suction cup to break the vacuum and detach from the carton. The vacuum of the first suction cup 1427 is disconnected, and the first suction cup 1427 detaches from the carton.

[0078] The rotating disk 13 is provided with 8 groups of bearing holes for the connecting rod suction cup assembly 142 to be installed. Figure 14-16 As shown, the connecting rod suction cup assembly 142 includes a first connecting rod 1421, a second connecting rod 1422, a third connecting rod 1423, a fourth connecting rod 1424, a fifth connecting rod 1425, a sixth connecting rod 1426 and a first suction cup 1427. The third connecting rod 1423, the fourth connecting rod 1424, the fifth connecting rod 1425 and the sixth connecting rod 1426 constitute a first four-bar linkage. The first suction cup 1427 is installed on the sixth connecting rod 1426. Two grooves are provided on the side of the cam 141. The first connecting rod 1421 is connected to the first cam bearing 1428. The second connecting rod 1422 is connected to the second cam bearing 1429. The first cam bearing 1428 and the second cam bearing 1429 roll in the two grooves of the cam 141 respectively.

[0079] The connecting rod suction cup assembly 142 includes a gear shaft 143, the sixth connecting rod 1426 is fixedly locked on the gear shaft 143, the second connecting rod 1422 is provided with a fan gear 144, the fan gear 144 is engaged with the gear shaft 143, the fourth connecting rod 1424 is a sleeve-type connecting rod, the fourth connecting rod 1424 is installed on the gear shaft 143 through a bearing, the first connecting rod 1421 is installed in an embrace at one end of the fourth connecting rod 1424, and the first connecting rod 1421 and the fourth connecting rod 1424 are fixedly arranged, the third connecting rod 1423 and the fifth connecting rod 1425 connect the fourth connecting rod 1424 and the sixth connecting rod 1426.

[0080] The second cam bearing 1429 drives the sector gear 144 and the gear shaft 143 to move, the gear shaft 143 drives the sixth connecting rod 1426 to rotate around the center of the gear shaft 143, the first cam bearing 1428 drives the first connecting rod 1421 to move, the first connecting rod 1421 drives the fourth connecting rod 1424 to rotate around the center of the gear shaft 143, and the first four-bar linkage drives the first suction cup 1427 to achieve position change.

[0081] like Figure 17 As shown, the auxiliary support assembly 15 includes a support rod 151, a connecting rod 152 and a mounting plate 153. The mounting plate 153 is fixed to the side of the rotating plate 13 away from the fixed plate 12 through the connecting rod 152. The mounting plate 153 rotates clockwise with the rotating plate 13. Eight support rods 151 are evenly installed on the mounting plate 153.

[0082] like Figure 18As shown, the pre-pull box mechanism 2 includes a rotating shaft 21, a rotating air distribution block 22, a connecting rod assembly 23 and a second suction cup 24. The rotating air distribution block 22 is fixedly installed on one side of the rotating shaft 21. The connecting rod assembly 23 is composed of a seventh connecting rod 231, an eighth connecting rod 232, a ninth connecting rod 233 and a tenth connecting rod 234 to form a second four-bar linkage. The seventh connecting rod 231 is fixedly installed on the other side of the rotating shaft 21, and the ninth connecting rod 233 is sleeved and installed on the column, and the column is fixedly installed on the fixed plate. The eighth connecting rod 232 and the tenth connecting rod 234 connect the seventh connecting rod 231 and the ninth connecting rod 233. The second suction cup 24 is installed on the eighth connecting rod 232. The rotating shaft 21 rotates counterclockwise to drive the seventh connecting rod 231 to rotate counterclockwise, and the seventh connecting rod 231 drives the eighth connecting rod 232 and the second suction cup 24 to swing.

[0083] like Figure 19 As shown, the rotating disk connecting shaft 16 of the drum body 1 and the rotating shaft 21 of the pre-stretching box mechanism 2 are driven to rotate by the drum synchronous pulley 161 and the pre-stretching box mechanism synchronous pulley 211 respectively. The drum synchronous pulley 161 and the pre-stretching box mechanism synchronous pulley 211 are driven to rotate by the main motor 1112 and the synchronous belt 1113. The main motor 1112 is installed on the lower side, and the synchronous belt 1113 transmits power to the drum synchronous pulley 161 and the pre-stretching box mechanism synchronous pulley 211, thereby driving the drum body 1 and the pre-stretching box mechanism 2 to rotate. When the pre-stretching box mechanism rotates one circle, the drum body rotates 1 / 8 of a circle, that is, one suction cup station.

[0084] like Figure 20 and Figure 21 As shown, an intermediate transition ring 25 and an interface ring 26 are provided on one side of the rotating air distribution block 22. The intermediate transition ring 25 is fixed on the rotating shaft 21 and rotates with the rotating shaft 21. A spring is provided on one side of the interface ring 26, and the interface ring 26 is pressed on the intermediate transition ring 25 by the force of the spring. A second vacuum interface 261 and a second small air blowing interface 262 are provided on the interface ring 26. Corresponding through holes are provided on the intermediate transition ring 25 and the rotating air distribution block 22 respectively. A center hole is provided inside the rotating shaft 21, and a vent pipe is installed in the center hole. The vent pipe connects the rotating air distribution block 22 with the second suction cup 24. The rotation of the rotating shaft 21 drives the rotating air distribution block 22 and the intermediate transition ring 25 to rotate, and the interface ring 26 is fixed and does not rotate. The vent holes on the intermediate transition ring 25 are sequentially connected to the vacuum outlet and the small air blowing outlet on the interface ring 26 to realize the on-off and switching of vacuum and small air blowing, thereby controlling the switching of vacuum and small air blowing of the second suction cup 24.

[0085] The rotating gas distribution block 22 and the interface ring 26 are both made of metal, and the surfaces in contact with the intermediate transition ring 25 are ground and are as smooth as a mirror; the intermediate transition ring 25 is made of special engineering plastics with a smooth and wear-resistant surface, and is in contact with the rotating gas distribution block 22 and the interface ring 26 to ensure the airtightness of vacuum and blowing.

[0086] like Figure 22-24 As shown, the forming and holding mechanism 3 includes two sets of forming bars, which are arranged side by side. The forming bars include forming guide bars 31 and forming guard bars 32. The forming guide bars 31 and forming guard bars 32 of each set of forming bars are connected. The forming guide bars 31 are connected to the forming frame 33, which is equipped with a passive retaining bar 34. The forming frame 33 is connected to the main frame 19 via an adjustable clamping column 35. The adjustable clamping column 35 has an adjustment slot. The adjustable clamping column 35 is adjustable in two directions and is rotatably connected to the main frame 19. The mechanism can be adjusted left and right, and can also be rotated and adjusted around the center of the adjustable clamping column 35.

[0087] Working principle: Figure 25 The figure shows the starting position of the eight-claw drum mechanism of the soap cartoning machine. 0° is the starting position for sucking boxes, the carton storage position of the box feeding line 100 is at 30°, the pre-pull box mechanism 2 is at 110°, and the forming and holding mechanism 3 is at 180°. The rotating disk 13 of the drum body 1 drives the connecting rod suction cup assembly 142 and the support rod 151 to rotate clockwise around the axis. At the same time, the first suction cup 1427 is driven by the sixth connecting rod 1426 to rotate around the sixth connecting rod 1426. The axis swings left and right, the seventh connecting rod 231 of the pre-pull box mechanism 2 rotates counterclockwise, driving the eighth connecting rod 232 to rotate; the drum body 1 starts to rotate clockwise from 0° with the connecting rod suction cup assembly 142, the sixth connecting rod 1426 starts to rotate clockwise around itself from 0°, and the first suction cup 1427 moves closer to the rotation center of the drum body 1 to avoid the carton in the carton storage position; when the drum body 1 rotates to the 20° position, the sixth connecting rod 1426 starts to rotate counterclockwise, as shown in FIG. Figure 26 As shown, the connecting rod suction cup assembly 142 begins to approach the carton in the carton storage position. At this time, the air circuit system corresponding to the first suction cup 1427 starts to work, and the vacuum is opened for the first suction cup 1427 in advance to ensure that the first suction cup 1427 firmly absorbs the carton at the moment it touches the carton.

[0088] like Figure 27 As shown, when the drum body 1 rotates to the 30° box suction position, the first suction cup 1427 absorbs the paper box, and the drum body 1 continues to rotate. At the same time, the sixth connecting rod 1426 continues to rotate counterclockwise, driving the first suction cup 1427 away from the storage position, that is, the first suction cup 1427 absorbs the paper box and pulls the paper box out of the storage position. When the drum body 1 rotates to 47°, the paper box is completely pulled out by the connecting rod suction cup assembly 142. Figure 28 As shown, the state is maintained and the drum body 1 rotates.

[0089] like Figure 29As shown, when the connecting rod suction cup assembly 142 absorbs the paper box and rotates with the drum body 1 to 75 degrees, the sixth connecting rod 1426 starts to rotate clockwise, driving the first suction cup 1427 to move away from the axis of the drum body 1. When it rotates to 110 degrees, that is, the pre-pull box position, as shown in FIG. Figure 30 , the second suction cup 24 of the pre-box pulling mechanism 2 also contacts the carton and sucks the other side of the carton.

[0090] After the second suction cup 24 sucks the paper box, the seventh connecting rod 231 continues to rotate to drive the second suction cup 24 to move away from the paper box. Figure 31 As shown, at this time, the carton is pre-stretched into a parallelogram. Under the control of the pre-stretching box air circuit, the vacuum of the second suction cup 24 is disconnected, and the small air is turned on. The second suction cup 24 is separated from the carton to complete the pre-stretching action. At the same time, the sixth connecting rod 1426 continues to rotate clockwise, and the support rod 151 is used to fully open the carton to a rectangular state as shown in FIG. Figure 32 shown.

[0091] Figure 35 This is a timing diagram of the air circuits of the drum body 1 and the pre-box-pulling mechanism 2 of the eight-claw drum mechanism of the soap cartoning machine.

[0092] After the carton is fully opened, the drum body 1 continues to rotate to the holding position 210°, and the carton is fully held by the forming guide strip 31. Figure 33 As shown, the drum air system cuts off the vacuum of the suction cup and turns on the blowing of small air at the same time. At this time, the first suction cup 1427 is separated from the paper box. Figure 34 As shown, after all the processes of opening the carton are completed, the connecting rod suction cup assembly 142 maintains this state and continues to rotate back to the 0° starting position to start the next cycle. The 8 groups of connecting rod suction cup assemblies 142 sequentially perform the carton suction-pre-pull-open-hold action to open the carton continuously.

[0093] The eight-claw drum mechanism, through the precise coordination of the drum body 1, the pre-box-pulling mechanism 2 and the forming and holding mechanism 3, equipped with a suitable air path, can automatically realize the actions of sucking boxes, pre-pulling boxes and holding box forming according to work requirements accurately, flexibly, stably and reliably.

[0094] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. The eight-claw drum mechanism of the soap cartoning machine is installed between the box feeding line and the box clamping chain. It is used to suck out the folded paper boxes conveyed by the box feeding line, pre-stretch and unfold them into shape, and then clamp them through the box clamping chain to convey them to the rear end. Its characteristics are: The machine comprises a pre-box-pulling mechanism, a rotating drum body and a forming and holding mechanism, wherein the pre-box-pulling mechanism, the rotating drum body and the forming and holding mechanism are all mounted on a main frame. When the rotating drum body rotates clockwise, the pre-box-pulling mechanism rotates counterclockwise, and the folded carton is sucked out by the rotating drum body. The pre-box-pulling mechanism cooperates with the rotating drum body to pre-pull and unfold the carton, and the forming and holding mechanism unfolds and forms the carton. The drum body is arranged vertically, with the horizontal symmetry line of the drum body as a reference, one side of the horizontal symmetry line is at the 0° position, the other side is at the 180° position, the top of the longitudinal symmetry line of the drum body is at the 90° position, and the bottom is at the 270° position, the box feeding line is located at the 30° position of the drum body, the pre-box pulling mechanism is located at the 110° position of the drum body, and the forming and holding mechanism is located at the 180° position of the drum body; The drum body includes an air circuit assembly, a fixed plate, a rotating plate, a cam connecting rod suction cup assembly and an auxiliary expansion assembly. The fixed plate is fixedly mounted on the main frame, the air circuit assembly is mounted on the fixed plate, the rotating plate is arranged on one side of the fixed plate, and the cam connecting rod suction cup assembly and the auxiliary expansion assembly are mounted on the rotating plate. The rotating disk is mounted on a rotating disk connecting shaft, which is mounted inside the inner hole of the fixed disk via a bearing. A main shaft is mounted in the inner hole of the rotating disk connecting shaft via a bearing. The air circuit assembly is fixedly mounted on the main shaft, and the air circuit assembly is fixed to the main frame via a torque arm. The air circuit assembly includes a cylinder, a vacuum air distribution block, an air distribution sleeve assembly and a vacuum inlet. The vacuum inlet is located at one end of the air circuit assembly and is connected to the cam connecting rod suction cup assembly through a vacuum chamber, a vacuum air distribution block and an air distribution sleeve assembly. There are 8 cylinders. The 8 cylinders and the vacuum air distribution block control the vacuum on and off. The 8 cylinders respectively control the corresponding 8 groups of cam connecting rod suction cup assemblies. The cam connecting rod suction cup assembly consists of a cam and 8 sets of evenly distributed and identical connecting rod suction cup assemblies. The cam is fixed to one side of the fixed disk and is arranged between the fixed disk and the rotating disk. The air distribution sleeve assembly includes a fixed air distribution sleeve, a rotating air distribution sleeve, and an intermediate connecting sleeve. The fixed air distribution sleeve is installed on the main shaft. The fixed air distribution sleeve is provided with 9 interfaces, including 8 first vacuum interfaces and 1 first small air blowing interface. The first vacuum interface is connected to the vacuum air pipe connected to the vacuum air distribution block. A first small air blowing air distribution block is also provided between the vacuum air distribution block and the main shaft. The first small air blowing interface is connected to the blowing pipe connected to the first small air blowing air distribution block. A filter is provided at the interface between the blowing pipe and the vacuum air pipe. An O-ring is provided between the fixed air distribution sleeve and the intermediate connecting sleeve. The intermediate connecting sleeve is fixedly mounted on the fixed air distribution sleeve. The rotating air distribution sleeve is sleeved on the intermediate connecting sleeve, and the rotating air distribution sleeve is mounted on the rotating disk. The vacuum enters the vacuum chamber from the vacuum inlet, passes through the vacuum air distribution block, and reaches the fixed air distribution sleeve through the vacuum air pipe. The vacuum is then sent to the rotating air distribution sleeve by the intermediate connecting sleeve, and is then transported to the corresponding connecting rod suction cup assembly by the rotating air distribution sleeve. A piston hole is provided in the vacuum distribution block, a vent piston is installed in the piston hole, and a return spring is installed at one end of the vent piston. The output rod of the cylinder pushes out to contact the vent piston, blocking the piston hole and pushing the vent piston to one side to compress the return spring. At this time, the vacuum circuit between the vacuum chamber and the vacuum air pipe is cut off; The auxiliary expansion assembly includes a support rod, a connecting rod and a mounting plate. The mounting plate is fixed to the side of the rotating plate away from the fixed plate through the connecting rod. The mounting plate rotates clockwise with the rotating plate. Eight support rods are evenly mounted on the mounting plate. The pre-pull box mechanism includes a rotating shaft, a rotating air distribution block, a connecting rod assembly and a second suction cup, a rotating air distribution block is fixedly installed on one side of the rotating shaft, and the connecting rod assembly consists of a seventh connecting rod, an eighth connecting rod, a ninth connecting rod and a tenth connecting rod to form a second four-bar linkage, the seventh connecting rod is fixedly installed on the other side of the rotating shaft, the ninth connecting rod is sleeved and installed on a column, the eighth connecting rod and the tenth connecting rod connect the seventh connecting rod and the ninth connecting rod, the second suction cup is installed on the eighth connecting rod, the rotating shaft rotates counterclockwise to drive the seventh connecting rod to rotate counterclockwise, and the seventh connecting rod drives the eighth connecting rod and the second suction cup to swing; The molding and maintaining mechanism comprises two groups of molding bars, which are arranged side by side.

2. The eight-claw drum mechanism of the soap cartoning machine according to claim 1, characterized in that: The rotating disk connecting shaft of the drum body and the rotating shaft of the pre-tension box mechanism are driven to rotate by the drum synchronous pulley and the pre-tension box mechanism synchronous pulley respectively, and the drum synchronous pulley and the pre-tension box mechanism synchronous pulley are driven to rotate by the main motor and the synchronous belt.

3. The eight-claw drum mechanism of the soap cartoning machine according to claim 1, characterized in that: The vent piston is provided with a vacuum breaking hole, and the vacuum distribution block is provided with an exhaust hole. After the vent piston is pushed to one side by the cylinder, the vacuum breaking hole on the vent piston is communicated with the exhaust hole on the vacuum distribution block, and the closed vacuum pipeline from the first suction cup of the connecting rod suction cup assembly to the vent piston is directly communicated with the atmosphere, breaking the vacuum in the first suction cup and separating the first suction cup from the paper box; The cylinder is in a vacuum disconnected state. When the drum body rotates to 20 degrees, the cylinder is actuated to open the passage between the vacuum chamber and the vacuum distribution block, and the first suction cup is vacuumed. When all actions of opening the carton are completed and the drum body rotates to 210 degrees, the cylinder is actuated again to disconnect the passage in the vacuum distribution block, disconnecting the vacuum of the first suction cup, and the first suction cup is separated from the carton. The air blowing interface is controlled by a solenoid valve.

4. The eight-claw drum mechanism of the soap cartoning machine according to claim 1, characterized in that: The rotating disk is provided with 8 groups of evenly distributed bearing holes for installing the connecting rod suction cup assembly, the connecting rod suction cup assembly includes a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod and a first suction cup, the third connecting rod, the fourth connecting rod, the fifth connecting rod and the sixth connecting rod constitute a first four-bar linkage, the sixth connecting rod is installed with a first suction cup, the side surface of the cam is provided with two grooves, the first connecting rod is connected to a first cam bearing, the second connecting rod is connected to a second cam bearing, the first cam bearing and the second cam bearing respectively roll in the two grooves of the cam; The connecting rod suction cup assembly includes a gear shaft, the sixth connecting rod is fixedly locked on the gear shaft, the second connecting rod is provided with a sector gear, the sector gear is engaged with the gear shaft, the fourth connecting rod is a sleeve-type connecting rod, the fourth connecting rod is mounted on the gear shaft through a bearing, the first connecting rod is mounted around one end of the fourth connecting rod, and the first connecting rod and the fourth connecting rod are fixedly arranged, and the third connecting rod and the fifth connecting rod connect the fourth connecting rod and the sixth connecting rod; The second cam bearing drives the sector gear and the gear shaft to move, the gear shaft drives the sixth connecting rod to rotate around the center of the gear shaft, the first cam bearing drives the first connecting rod to move, the first connecting rod drives the fourth connecting rod to rotate around the center of the gear shaft, and the first four-bar linkage drives the first suction cup to achieve position change.

5. The eight-claw drum mechanism of the soap cartoning machine according to claim 1, characterized in that: An intermediate transition ring and an interface ring are provided on one side of the rotating air distribution block. The intermediate transition ring is fixed on the rotating shaft and rotates with the rotating shaft. The interface ring is provided with a second vacuum interface and a second small air blowing interface. The intermediate transition ring and the rotating air distribution block are respectively provided with corresponding vent holes. A center hole is provided inside the rotating shaft. A vent pipe is installed in the center hole. The vent pipe connects the rotating air distribution block with the second suction cup. The rotation of the rotating shaft drives the rotating air distribution block and the intermediate transition ring to rotate, and the interface ring is fixed and does not rotate. The vent holes on the intermediate transition ring are sequentially connected with the vacuum outlet and the small air blowing outlet on the interface ring to realize the on-off and switching of vacuum and small air blowing, and control the switching of vacuum and small air blowing of the second suction cup.

6. The eight-claw drum mechanism of the soap cartoning machine according to claim 1, characterized in that: The forming strips include forming guide strips and forming guard strips. The forming guide strips and forming guard strips of each group of forming strips are connected. The forming guide strips are connected to a forming frame. The forming frame is provided with a passive baffle. The forming frame is connected to the main frame through an adjusting clamping column. The adjusting clamping column is provided with an adjusting slot, and the adjusting clamping column is rotatably connected to the main frame.

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