Firecracker cake stacking machine

Abstract

This utility model discloses a firecracker cake stacking machine, comprising a stacking device equipped with a lifting frame for stacking firecracker cakes on a pallet, a belt conveyor hinged to the lifting frame for conveying the firecracker cakes to the stacking device, and a pallet conveyor connected to the stacking device for conveying the pallet to the stacking device and retrieving the pallet with stacked firecracker cakes. This utility model can automatically complete the stacking of firecracker cakes. Because it reduces manual intervention in the production process, it can improve production safety and reduce production costs.

Description

Technical Field

[0001] This utility model belongs to the field of firecracker machinery, specifically relating to a firecracker cake stacking machine. Background Technology

[0002] During the production of firecrackers, individual paper tubes are typically processed into hexagonal firecracker cakes, which are then filled with gunpowder and stacked. Currently, manufacturers use manual methods for stacking firecracker cakes, which results in low work efficiency and a lack of safety guarantees. Utility Model Content

[0003] The purpose of this invention is to provide a firecracker cake stacking machine with high production efficiency and safety.

[0004] The technical solution adopted to achieve the purpose of this utility model is as follows: The firecracker cake stacking machine provided by this utility model includes a stacking device for stacking firecracker cakes on a pallet and equipped with a lifting frame device, a belt conveyor device hinged to the lifting frame device of the stacking device for conveying the firecracker cakes to the stacking device, and a pallet conveyor device connected to the stacking device for conveying the pallet to the stacking device and recycling the pallet on which the firecracker cakes are stacked.

[0005] The belt conveyor includes a frame, a belt support hinged to the frame and capable of lifting and sliding forward and backward, a belt driven by a belt drive motor and capable of rotation, a cake-dividing mechanism on the belt support, and a photoelectric sensor located behind the cake-dividing mechanism; the cake-dividing mechanism includes cake-dividing cylinders fixed to the belt support by the support and located on both sides of the belt, and each cake-dividing cylinder is provided with a lever through a piston rod.

[0006] The palletizing device 1 includes a gantry frame, a lifting frame device mounted on the gantry frame, a pallet driven by the lifting frame device to move up and down, a non-powered roller located at the rear of the pallet, a blocking mechanism located on the pallet in front of the non-powered roller and capable of moving up and down, a pushing mechanism located on both sides of the non-powered roller on the pallet, a sliding mechanism located on the pallet and capable of sliding back and forth along the pallet, a tongue plate mechanism located at the front of the pallet and capable of extending back and forth, and a pallet-pulling mechanism located on the lifting frame device above the pallet and capable of moving laterally; the lifting frame device includes a chain lifting mechanism. A lifting frame, driven by a chain lifting mechanism, can move up and down within a gantry frame. The tray is connected to the lifting frame, and the cake-dispensing mechanism is located on the lifting frame. The tray is divided into a rear cake-receiving area and a front cake-pushing area according to the position of the firecracker cakes. Each area includes several cake positions that can accommodate horizontally arranged firecracker cakes. The first and second cake positions in the middle of the cake-receiving area are arranged with a non-powered roller, which corresponds to the belt conveyor. The first and second cake positions where the non-powered roller is located are respectively equipped with photoelectric sensors that sense the firecracker cakes. The gantry frame is equipped with limit switches that limit the lifting range of the lifting frame.

[0007] The chain lifting mechanism includes a servo motor fixed to the top of the gantry, a drive shaft and a driven shaft with sprockets, a sprocket fixed to the bottom of the gantry, and a chain wound around the sprockets of the drive shaft and the driven shaft. The two ends of the drive shaft and the driven shaft are connected to the lifting frame through the chain, and the lifting frame cooperates with the guide rail on the gantry through a slider.

[0008] The blocking mechanism includes a first blocking cylinder located in front of the non-powered roller in the receiving area of ​​the tray, and a second blocking cylinder located in front of the pushing area of ​​the tray. The piston rods of the first and second blocking cylinders both pass through the tray and can move up and down. The first blocking cylinders are divided into two groups, with two first blocking cylinders in each group corresponding to the non-powered roller of one cake position. The second blocking cylinders are divided into several groups, with one group of two second blocking cylinders arranged for each cake position. The distance between the piston rods of each group of first blocking cylinders and the distance between the piston rods of each group of second blocking cylinders are both less than the width of the firecracker cake. When their piston rods extend out of the tray, they can block the firecracker cake from moving forward.

[0009] The pancake pushing mechanism includes a pancake pushing cylinder fixed on the tray and a push plate on the piston rod of the pancake pushing cylinder. The two pancake pushing mechanisms correspond to the pancake positions located on both sides of the first and second pancake positions in the pancake receiving area and the pancake pushing area of ​​the tray, respectively.

[0010] The pushing mechanism includes pushing cylinders fixed to both sides of the tray, and sliding plates connected to the piston rods of each pushing cylinder, which move back and forth along the tray. The piston rods are slidably engaged with guide blocks fixed to the bottom of the tray via guide rods to maintain stable movement. The sliding plates are slidably engaged with guide rods fixed to the bottom of the tray via sliders to maintain stable movement. A lever mechanism is provided between the two sliding plates via a horizontal plate. The lever mechanism includes a lever cylinder fixed to the horizontal plate, a connecting rod driven by the lever cylinder, a swing rod driven by the connecting rod, and a lever connected to the swing rod for raking the firecracker cakes off the tray. The lever cylinder includes a fixed... The two cylinders are fixed at both ends of the horizontal plate. Each cylinder is connected to a connecting rod. Each connecting rod includes three sections of support rods connected by hinges. The piston rod of the cylinder is hinged to the support rod at one end of the connecting rod by a hinge. Each connecting rod is hinged to four rocker arms by hinges between the support rods and on the support rods at both ends. The four rocker arms on the two connecting rods form eight rocker arms that are staggered. Each rocker arm is fixedly connected to a rotating shaft on the horizontal plate. At the same end of each rotating shaft, there are two cylinders arranged in a line. Each pair of cylinders corresponds to one disc position, and the distance between them is less than the width of the firecracker disc.

[0011] The tongue plate mechanism includes two tongue plate cylinders fixed to the bottom of the tray, a connector fixed to the piston rods of the two tongue plate cylinders, and several tongue plates fixed to the connector and located at the front end of the bottom of the tray. Each tongue plate has a slide rail at its bottom that cooperates with a slide groove fixed to the bottom of the tray. Guide rods are fixed to both ends of the connector and cooperate with sliders fixed to the bottom of the tray to maintain the stability of the tongue plate mechanism. Each tongue plate corresponds to one disc position.

[0012] The pancake-dispensing mechanism includes a guide rod and a synchronous belt mechanism fixed on the lifting frame, and a pancake-dispensing assembly driven by the synchronous belt mechanism to move back and forth laterally along the guide rod; the synchronous belt mechanism includes a servo motor fixed on the lifting frame and a synchronous belt driven by the servo motor; the pancake-dispensing assembly includes a mounting base sleeved on the guide rod and fixed to the synchronous belt, a dispensing block fixed on the mounting base, and pancake-pushing cylinders located on both sides of the dispensing block, a lifting cylinder connected to the piston rod of the dispensing cylinder, and a push plate connected to the piston rod of the lifting cylinder; each dispensing cylinder 1068 has a magnetic switch at its front end.

[0013] The pallet conveying device includes a pallet lifting device located under the pallet inside the palletizing device gantry, a pallet transfer and discharge device connected to the pallet lifting device, and a pallet feeding device connected to the pallet transfer and discharge device.

[0014] The palletizing lifting device includes a base, a roller frame mounted on the base via a lifting mechanism, and several rollers mounted on the roller frame and driven by a servo motor via a chain. The lifting mechanism includes a servo motor fixed on the base and four gear screw mechanisms fixed at the four corners of the base. The servo motor is connected to two gear screw mechanisms on one side of the base via a linkage shaft. The two gear screw mechanisms on this side are respectively connected to two gear screw mechanisms on the other side of the base via a linkage shaft. The screws in the gear screw mechanisms are connected to the roller frame. Photoelectric sensors are provided at the front and rear of the roller frame.

[0015] The pallet transfer and discharge device includes a frame, a lower roller frame and an upper roller frame mounted on the frame, several rollers mounted on the lower roller frame and the upper roller frame respectively, and servo motors that drive each roller via chains; photoelectric sensors are respectively provided at the front and rear of the lower roller frame and the upper roller frame.

[0016] The pallet feeding device includes a frame, a roller frame mounted on the frame, and several rollers mounted on the roller frame and driven by a servo motor via a chain; photoelectric sensors are respectively installed at the front and rear of the roller frame. Beneficial effects

[0017] This invention can automatically stack firecracker cakes, up to 20,000 cakes per day, saving the labor of two people. By reducing manual labor in the production process, it improves production safety and lowers production costs.

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the cake-dividing mechanism in this utility model.

[0021] Figure 3 This is a schematic diagram of the palletizing device in this utility model.

[0022] Figure 4 This is a partial schematic diagram of the palletizing device.

[0023] Figure 5 This is a schematic diagram of the gantry frame in this utility model.

[0024] Figure 6 This is a top view of the tray in this utility model.

[0025] Figure 7 yes Figure 6 Enlarged view of section I in the middle.

[0026] Figure 8 This is a bottom view of the tray.

[0027] Figure 9 This is a schematic diagram of the pusher mechanism in the flat pushing mechanism of the palletizing device in this utility model.

[0028] Figure 10 This is a schematic diagram of the pancake-pulling mechanism in this utility model.

[0029] Figure 11 This is a side view of the pancake-pulling mechanism.

[0030] Figure 12 This is a top view of the pancake-pulling mechanism.

[0031] Figure 13 This is a schematic diagram of the pallet conveying device in this utility model.

[0032] Figure 14 This is a top view of the base of the pallet conveyor.

[0033] Figure 15 This is a schematic diagram of the internal structure of a pallet conveyor. Detailed Implementation

[0034] See Figure 1The firecracker cake stacking machine provided by this utility model includes a stacking device 1 for stacking firecracker cakes on a pallet and equipped with a lifting frame device, a belt conveyor 2 hinged to the lifting frame device of the stacking device 1 for conveying the firecracker cakes to the stacking device 1, and a pallet conveyor 3 connected to the stacking device 1 for conveying the pallet to the stacking device 1 and recycling the pallet on which the firecracker cakes are stacked.

[0035] See Figure 1 —— Figure 2 The belt conveyor 2 includes a frame 201, a belt support 205 mounted on the frame 201 and hinged to the lifting frame device, capable of lifting and sliding back and forth, a belt 202 mounted on the belt support 205 and driven to rotate by a belt drive motor, a cake-dividing mechanism 203 mounted on the belt support 205, and a photoelectric sensor 204 located behind the cake-dividing mechanism 203; the cake-dividing mechanism 203 includes a cake-dividing cylinder 2032 and a cake-dividing cylinder 2032' fixed on the belt support 205 by a bracket 2031 and located on both sides of the belt 202, and the cake-dividing cylinders 2032 and 2032' are respectively provided with a lever 2034 through a piston rod 2033.

[0036] See Figure 1 , Figure 3 —— Figure 5 The palletizing device 1 includes a gantry frame 101, a lifting frame device mounted on the gantry frame 101, a pallet 104 driven by the lifting frame device to move up and down, a non-powered roller 105 located at the rear of the pallet 104, a blocking mechanism located on the pallet 104 in front of the non-powered roller 105 and capable of moving up and down, a pushing mechanism 107 located on both sides of the non-powered roller 105 on the pallet 104, a flat pushing mechanism 108 located on the pallet 104 and capable of sliding back and forth along the pallet, a tongue plate mechanism 120 located at the front end of the pallet 104 and capable of extending and retracting back and forth, and a pallet-pulling mechanism 106 located on the lifting frame device above the pallet 104 and capable of moving laterally; the lifting frame device includes a chain lifting mechanism 102, driven by the lifting frame device to move up and down. The chain lifting mechanism 102 drives the lifting frame 103, which can move up and down within the gantry frame 101. The tray 104 is connected to the hanging rod 1031 on the lifting frame 103. The cake-dispensing mechanism 106 is located on the lifting frame 103. The tray 104 is divided into a rear cake-receiving area and a front cake-pushing area according to the position of the firecracker cake. Each area includes several cake positions that can accommodate horizontally arranged firecracker cakes. The unpowered roller 105 is arranged in the middle of the cake-receiving area, and the first and second cake positions correspond to the belt conveyor 2. The first and second cake positions where the unpowered roller 105 is located are respectively provided with photoelectric sensors 1011 for sensing firecracker cakes. The gantry frame 101 is provided with a limit switch 1013 that limits the lifting range of the lifting frame 103.

[0037] The belt support 205 of the belt conveyor 2 is hinged to the boom 1031 on the lifting frame 103 via the hinge shaft 206, so that the belt 202 on it is connected to the tray 104. When the lifting frame 103 rises and falls, the belt support 205 rises and falls with the lifting frame 103 and moves back and forth a certain distance.

[0038] See Figure 3 , Figure 5 The chain lifting mechanism 102 includes a servo motor 1021 fixed to the top of the gantry frame 101, a drive shaft 1023 and a driven shaft 1023' equipped with sprockets 1024, a sprocket 1026 fixed to the bottom of the gantry frame 101, and a chain 1025 wound around the sprockets 1024 and 1026 of the drive shaft 1023 and the driven shaft 1023' in a conventional manner. The two ends of the drive shaft 1023 and the driven shaft 1023' are respectively connected by the chain 1025. 025 and connector 1027 are connected to the four corners of the lifting frame 103. The servo motor 1021 drives the drive shaft 1023 through the drive chain 1022. The drive shaft 1023 drives the driven shaft 1023' through the chain 1025. The drive shaft 1023 and the driven shaft 1023' synchronously drive the lifting frame 103 to perform lifting and lowering movements through the chain 1025. The lifting frame 103 cooperates with the guide rail 1012 on the gantry frame 101 through the open slider 1032.

[0039] See Figure 6 —— Figure 8 The blocking mechanism includes a first blocking cylinder 1010 located in front of the non-powered roller 105 in the receiving area of ​​the tray 104 and a second blocking cylinder 1010' located in front of the pushing area of ​​the tray 104. The piston rods 109 of the first blocking cylinder 1010 and the piston rods 109' of the second blocking cylinder 1010' both pass through the tray 104 and can move up and down. There are four first blocking cylinders 1010 divided into two groups, with two first blocking cylinders 1010 in each group corresponding to one non-powered roller 105 at a cake position. There are eight second blocking cylinders 1010' divided into four groups, with two second blocking cylinders 1010' arranged in each cake position. The distance between the piston rods 109 of each group of first blocking cylinders 1010 and the distance between the piston rods 109' of each group of second blocking cylinders 1010' are both less than the width of the firecracker cake a. When their piston rods extend out of the tray 104, they can block the firecracker cake a from moving forward.

[0040] See Figure 6 —— Figure 8 The pancake pushing mechanism 107 includes a pancake pushing cylinder 1071 fixed on the tray 104 and a push plate 1072 provided on the piston rod of the pancake pushing cylinder 1071. The two pancake pushing mechanisms 107 correspond to the pancake positions located on both sides of the first and second pancake positions in the pancake receiving area and the pancake pushing area of ​​the tray 104, respectively.

[0041] See Figure 6 —— Figure 9 The pushing mechanism 108 includes pushing cylinders 1081 fixed on both sides of the tray 104, and sliding plates 1082 connected to the piston rods 10817 of each pushing cylinder 1081 via connecting members 10818, which move back and forth along the tray 104. The piston rods 10817 slide with guide rods 10814 fixed on the connecting members 10818 and guide blocks 10819 fixed on the bottom of the tray 104 to maintain stable movement. The sliding plates 1082 are connected to the guide blocks 10816 fixed on the tray via sliders 10816. The guide rod 10815 at the bottom of 104 slides to maintain stable movement; a lever mechanism is provided between the two slide plates 1082 via a cross plate 1083. The lever mechanism includes a lever cylinder fixed on the cross plate 1083, a connecting rod driven by the lever cylinder, a swing rod 1089 driven by the connecting rod, and a lever 1087 connected to the swing rod 1089 for raking the firecracker cakes out of the tray 104; the lever cylinder includes lever cylinders 1084 and 1084' fixed at both ends of the cross plate 1083, and lever cylinders 1084 and 1084'... 084′ is connected to the connecting rods respectively. Each connecting rod includes a three-section support rod 1086 connected by hinge 10812. The piston rod 1085 of the paddle cylinders 1084 and 1084′ is hinged to the support rod 1086 at one end of the connecting rod by hinge 10810. Each connecting rod is hinged to four rocker arms 1089 by hinge 10812 between the support rods 1086 and hinges 10811 and 10813 on the support rods 1086 at both ends. The four rocker arms 1089 on the two connecting rods form an interlocking structure. The eight levers 1089 of the position are fixedly connected to the pivot 1088 on the horizontal plate 1083. At the same end of each pivot 1088, there are paddle blocks 1087 arranged in a line. Every two paddle blocks 1087 correspond to one disc position, and their spacing is less than the width of the firecracker disc. The front end of the flat push cylinder 1081 is provided with a magnetic switch 10820, which is mainly used to determine whether the flat push cylinder 1081 has pushed the cylinder piston rod into place, so as to control whether the tongue plate cylinder 1201 retracts.

[0042] See Figure 6 —— Figure 8The tongue plate mechanism 120 includes two tongue plate cylinders 1201 fixed to the bottom of the tray 104 and located between two pusher cylinders 1071, a connector 1204 fixed to the piston rod 1206 of the two tongue plate cylinders 1201, and four tongue plates 1202 fixed to the connector 1204 and located at the front end of the bottom of the tray 104. Each tongue plate 1202 has a slide rail 1203 at its bottom that cooperates with a slide groove 1205 fixed to the bottom of the tray 104. Guide rods 1208 are fixed to both ends of the connector 1204 and cooperate with sliders 1207 fixed to the bottom of the tray 104 to maintain the stability of the tongue plate mechanism 120. Each tongue plate 1202 corresponds to a pancake position. A magnetic switch 1209 is provided at the rear end of the tongue plate cylinder 1201 to detect whether the piston rod drives the tongue plate 1202 to retract to the correct position, and at the same time control the flat pusher cylinder 1081, the toggle cylinder 1084 and 1084' to retract simultaneously.

[0043] See Figure 1 , Figure 3 —— Figure 4 , Figure 10 —— Figure 12 The pancake-dispensing mechanism 106 includes two guide rods 1067 fixed to the lifting frame 103 via a connector 1061, a synchronous belt mechanism fixed to the connector 1061, and a pancake-dispensing assembly driven by the synchronous belt mechanism to move laterally back and forth along the guide rods 1067; the synchronous belt mechanism includes a servo motor 1062 fixed to one end of the connector 1061, a reducer 1063 connected to the servo motor 1062, and a synchronous belt 1064 driven by the reducer 1063; the pancake-dispensing assembly includes a sliding sleeve 1066 sleeved on the guide rods 1067 and... The connector 1065 is fixed to the mounting base 10611 of the timing belt 1064, the toggle block 10612 is fixed on the mounting base 10611, and the pusher cylinders 1068 are located on both sides of the toggle block 10612. The lifting cylinder 1069 is connected to the piston rod of the pusher cylinder 1068, and the push plate 10610 is connected to the piston rod of the lifting cylinder 1069. Each pusher cylinder 1068 is provided with a magnetic switch 10613 at the front end to detect whether the push plate 10610 has moved into place, thereby controlling the pusher cylinder 1068 and the lifting cylinder 1069 to retract quickly.

[0044] See Figure 13 —— Figure 15 The pallet conveying device 3 includes a pallet lifting device 301 located under the pallet 104 inside the gantry frame 101 of the palletizing device 1, a pallet transfer and discharge device 302 connected to the pallet lifting device 301, and a pallet feeding device 303 connected to the pallet transfer and discharge device 302.

[0045] The palletizing lifting device 301 includes a base 3018, a roller frame 3011 mounted on the base 3018 via a lifting mechanism, and several rollers 3012 mounted on the roller frame 3011 and driven by a servo motor 3019 via a chain 30110. The lifting mechanism includes a servo motor 3013 fixed on the base 3018 and four gear screw mechanisms 3016 fixed at the four corners of the base 3018. The servo motor 3013 is connected to two gear screw mechanisms 3016 on one side of the base 3018 via a linkage shaft 3014. The two gear screw mechanisms 3016 on this side are respectively connected via… The linkage shaft 3017 is connected to two gear screw mechanisms 3016 on the other side of the base 3018. The lead screw 3015 in the gear screw mechanism 3016 is connected to the roller frame 3011. When the servo motor 3013 is working, it drives the two linkage shafts 3014 to synchronously drive the two linkage shafts 3017 through the two gear screw mechanisms 3016 on one side of the base 3018. The linkage shafts 3017 synchronously drive the two gear screw mechanisms 3016 on the other side of the base 3018. The four gear screw mechanisms 3016 synchronously drive the lead screw 3015 to move up and down, thereby driving the roller frame 3011 to move up and down. Photoelectric sensors 3020 and 3021 are respectively installed at the front and rear of the roller frame 3011 to sense whether the tray is in position, mainly controlling whether the servo motor 3013 starts and stops.

[0046] The pallet transfer and discharge device 302 includes a frame 3024, a lower roller frame 3023 and an upper roller frame 3021 mounted on the frame 3024. The lower roller frame 3023 and the upper roller frame 3021 are respectively equipped with a plurality of rollers 3022 and are driven by servo motors 3025 and 3026 of their respective rollers 3022 via chains 3027. Photoelectric sensors 3028 and 3029 are respectively provided at the front and rear of the lower roller frame 3023 to sense whether the pallet is in place and mainly control whether the servo motor 3025 starts and stops. Photoelectric sensors 30210 and 30211 are respectively provided at the front and rear of the upper roller frame 3021 to sense whether the pallet is in place and mainly control whether the servo motor 3026 starts and stops.

[0047] The pallet feeding device 303 includes a frame 3033, a roller frame 3031 mounted on the frame 3033, and several rollers 3032 mounted on the roller frame 3031 and driven by a servo motor 3034 via a chain 3035. Photoelectric sensors 3036 and 3037 are respectively provided at the front and rear of the roller frame 3031 to sense whether the pallet is in position and to mainly control whether the servo motor 3034 starts and stops.

[0048] Working principle Firecracker cakes a are conveyed to stacking device 1 by conveyor belt 2 in the direction of arrow X. Pallet b is conveyed by pallet conveyor 3, fed from roller frame 3031 of pallet feeding device 303 in the direction of arrow Y, and then conveyed to stacking device 1 via lower roller frame 3023 of pallet transfer discharge device 302 and stacking lifting device 301 to complete the stacking of firecracker cakes a on pallet b. Finally, they are discharged from upper roller frame 3021 of pallet transfer discharge device 302.

[0049] Firecracker cakes a are conveyed by the belt 202 of the belt conveyor device 2 and pass through the photoelectric sensor 204 to activate the cake-separating mechanism 203. The cake-separating cylinders 2032 and 2032' work alternately, using their respective paddles 2034 to move the firecracker cakes a to both sides of the belt 202 to form two staggered rows. The transmission force of the belt causes the two rows of firecracker cakes a to alternately enter the first and second cake positions of the cake receiving area of ​​the pallet 104 in the stacking device 1, where the unpowered roller 105 is located. To prevent the firecracker cakes a from slipping off the unpowered roller 105, the piston rods 109 of the first blocking cylinders 1010 in front of each cake position are first in the extended state. When the first firecracker cake a enters the first cake position and is sensed by the photoelectric sensor 1011 below, the piston rod 109 in front of the cake position retracts, and the cake-pulling assembly of the cake-pulling mechanism 106 moves from the middle to one side. The paddle block 10612 pushes the firecracker cake a to the cake position on one side of the cake receiving area of ​​the tray 104, and then quickly returns to the middle. During this period, the piston rod 109 of the first blocking cylinder 1010 extends again to block, waiting for the next firecracker cake a to come. At the same time, the pushing cylinder 1071 in the cake-pushing mechanism 107 on the side of the cake receiving area is activated, and the pushing plate 1072 pushes the firecracker cake a to the cake position on one side of the cake pushing area of ​​the tray 104. At this time, in order to prevent the firecracker cake a from being pushed out of the cake position too much, the piston rods 109' of the four sets of second blocking cylinders 1010' in front of the cake pushing area are in the extended state. When the second firecracker cake a enters the second cake position and is sensed by the photoelectric sensor 1011 below, the piston rod 109 in front of the cake position retracts, and the cake-pulling assembly of the cake-pulling mechanism 106 moves from the middle to the other side. The paddle block 10612 pushes the second firecracker cake a to the cake position on the other side of the cake receiving area of ​​the tray 104, and then quickly returns to the middle. During this period, the piston rod 109 extends again to block, waiting for the next firecracker cake a to come. At the same time, the cake-pushing cylinder 1071 in the cake-pushing mechanism 107 on the other side of the cake receiving area is activated, and the second firecracker cake a is pushed to the cake position on the other side of the cake-pushing area of ​​the tray 104 through the push plate 1072. Next, after the third firecracker cake a enters the first cake position, a lifting cylinder 1069 and a pushing cylinder 1068 in the cake-dispensing mechanism 106 are activated sequentially. The push plate 10610 of the lifting cylinder 1069 extends downwards, and then the pushing cylinder 1068 drives the push plate 10610 to push the third firecracker cake a forward to a cake position in the middle of the cake-dispensing area. The fourth firecracker cake a then enters the second cake position, and another lifting cylinder 1069 and a pushing cylinder 1068 in the cake-dispensing mechanism 106... 068 is started sequentially. The push plate 10610 of the lifting cylinder 1069 extends downward and then the push plate 10610 is driven by the cake-pushing cylinder 1068 to push the fourth firecracker cake a forward to another cake position in the middle of the cake-pushing area. After the cake-pushing cylinder 1068 pushes the push plate 10610 forward to the position, the magnetic switch 10613 senses the push plate 10610 and controls the cake-pushing cylinder 1068 to retract the push plate 10610 backward. Then, the lifting cylinder 1069 retracts the push plate 10610 upward.After four firecracker cakes a are pushed onto the tray 104 in the cake-pushing area, the piston rods 109' of the four sets of second blocking cylinders 1010' retract. The block cylinders 1084 and 1084' of the block mechanism in the flat pushing mechanism 108 are activated, driving the block 1087 from a horizontal state to a vertical state via a connecting rod. Then, the two flat pushing cylinders 1081 are activated, driving the block 1087 to push the four firecracker cakes a forward synchronously onto the tray 104. At the same time, the two tongue plate cylinders 1201 of the tongue plate mechanism 120 are activated, extending the four tongue plates 1202 forward onto the tray 104 to catch the four firecracker cakes a. Then, the four tongue plates 1202 are retracted, causing the four firecracker cakes a to fall onto the tray b conveyed by the tray conveyor 3. The piston rod 109' of the second blocking cylinder 1010' is fully extended. The retraction time of the tongue plate cylinder 1201 is controlled by the magnetic switch 10820 on the push cylinder 1081. The retraction time of the push cylinder 1081, the toggle cylinders 1084 and 1084' is controlled by the magnetic switch 1209 on the tongue plate cylinder 1201. When the toggle cylinders 1084 and 1084' retract, the toggle block 1087 also returns to the horizontal position.

[0050] When the pallet conveying device 3 conveys the pallet b, after the roller frame 3011 of the pallet lifting device 301 receives the pallet b from the lower roller frame 3023 of the pallet transfer and discharge device 302, under the action of the lifting mechanism, the roller frame 3011 carrying the pallet b is raised to a position flush with the upper roller frame 3021 of the pallet transfer and discharge device 302, which is the stacking position corresponding to the pallet 104 of the pallet stacking device 1. At this time, the front end of the pallet b leaves the position for the first row of firecracker cakes a (first row stacking position). After the first four firecracker cakes (a) pushed by the stacking device 1 fall from the tray 104 onto the first stacking position on the pallet b to form the first layer, the chain lifting mechanism 102 of the stacking device 1 raises the tray 104 by the height of one firecracker cake (a) via the lifting frame 103. After the second four firecracker cakes (a) pushed by the stacking device 1 fall onto the pallet b to form the second layer, the tray 104 rises again by the height of one firecracker cake (a), until the firecracker cakes (a) are stacked on the pallet b to the set number of layers, completing the stacking of the first row of firecracker cakes (a). The servo motor 3019 on the roller frame 3011 and the servo motor 3026 on the upper roller frame 3021 are simultaneously activated, moving the pallet b forward to a position one firecracker cake (a) long via their rollers 3012 and 3022, making room for the second row of stacking. The stacking process of the first row of firecracker cakes (a) is repeated at this position to complete the stacking of the second row of firecracker cakes (a). The pallet b moves forward again to the length of one firecracker cake a, clearing space for the third row of firecracker cakes a. The third row of firecracker cakes a is then placed, and this process is repeated until the set number of rows of firecracker cakes a is completed. At this point, the pallet b, having completed the placement of the firecracker cakes a, enters the upper roller frame 3021 and can be unloaded manually or mechanically. Simultaneously, the stacking lifting device 301 lowers the empty roller frame 3011 to a position flush with the lower roller frame 3023 of the pallet transfer and discharge device 302, awaiting the receipt of pallets b from the lower roller frame 3023.

[0051] The working status of the roller frame 3031 of the pallet feeding device 303, the lower roller frame 3023 and the upper roller frame 3021 of the pallet transfer and discharge device 302, and the roller frame 3011 of the pallet stacking and lifting device 301 during the process of conveying pallet b is controlled by their related photoelectric sensors 3036, 3037, 3028, 3029, 30210, 30211, 3020, and 3021 after sensing the pallet b. The control method is as follows: when pallet b enters the lower roller frame 3023 and roller frame 3011 sequentially from roller frame 3031, and when pallet b enters the upper roller frame 3021 from roller frame 3011, when a photoelectric sensor on one roller frame senses pallet b, the roller of that roller frame operates. When two photoelectric sensors simultaneously sense pallet b, that roller frame operates simultaneously with the roller of the preceding roller frame, completing the transition of pallet b between the two roller frames. When both photoelectric sensors on roller frame 3031 simultaneously sense pallet b, roller frame 3031 rises to a position flush with upper roller frame 3021; ​​when both photoelectric sensors on roller frame 3031 do not simultaneously sense pallet b, roller frame 3031 descends to a position flush with lower roller frame 3023.

Claims

1. A firecracker cake stacking machine, characterized by The device includes a stacking device with a lifting frame for stacking firecracker cakes on a pallet, a belt conveyor connected to the lifting frame for conveying the firecracker cakes to the stacking device, and a pallet conveyor connected to the stacking device for conveying the pallet to the stacking device and retrieving the pallet with the stacked firecracker cakes.

2. The firecracker cake stacker according to claim 1, characterized in that The belt conveyor includes a frame, a belt support hinged to the frame and capable of lifting and sliding forward and backward, a belt driven by a belt drive motor and capable of rotation, a cake-dividing mechanism on the belt support, and a photoelectric sensor located behind the cake-dividing mechanism; the cake-dividing mechanism includes cake-dividing cylinders fixed to the belt support by the support and located on both sides of the belt, and each cake-dividing cylinder is provided with a lever through a piston rod.

3. The firecracker cake stacker according to claim 1, wherein The palletizing device (1) includes a gantry frame, a lifting frame device mounted on the gantry frame, a pallet driven by the lifting frame device to move up and down, a non-powered roller located at the rear of the pallet, a blocking mechanism located on the pallet in front of the non-powered roller that can move up and down, a cake-pushing mechanism located on both sides of the non-powered roller on the pallet, a flat-pushing mechanism located on the pallet that can slide back and forth along the pallet, a tongue plate mechanism located at the front of the pallet that can extend and retract back and forth, and a cake-pulling mechanism located above the pallet on the lifting frame device that can move laterally; the lifting frame device includes a chain lifting mechanism. A lifting frame driven by a chain lifting mechanism is capable of moving up and down within a gantry frame. The tray is connected to the lifting frame, and the cake-dispensing mechanism is located on the lifting frame. The tray is divided into a rear cake-receiving area and a front cake-pushing area according to the position of the firecracker cakes. Each area includes several cake positions that can accommodate horizontally arranged firecracker cakes. The first and second cake positions in the middle of the cake-receiving area are arranged with a non-powered roller and correspond to the belt conveyor. The first and second cake positions where the non-powered roller is located are respectively equipped with photoelectric sensors for sensing firecracker cakes. The gantry frame is equipped with limit switches that limit the lifting range of the lifting frame.

4. The firecracker cake stacker according to claim 3, characterized in that The chain lifting mechanism includes a servo motor fixed to the top of the gantry, a drive shaft and a driven shaft with sprockets, a sprocket fixed to the bottom of the gantry, and a chain wound around the sprockets of the drive shaft and the driven shaft. The two ends of the drive shaft and the driven shaft are connected to the lifting frame through the chain, and the lifting frame cooperates with the guide rail on the gantry through a slider.

5. The firecracker cake stacker according to claim 3, wherein The blocking mechanism includes a first blocking cylinder located in front of the non-powered roller in the receiving area of ​​the tray, and a second blocking cylinder located in front of the pushing area of ​​the tray. The piston rods of the first and second blocking cylinders both pass through the tray and can move up and down. The first blocking cylinders are divided into two groups, with two first blocking cylinders in each group corresponding to the non-powered roller of one cake position. The second blocking cylinders are divided into several groups, with one group of two second blocking cylinders arranged for each cake position. The distance between the piston rods of each group of first blocking cylinders and the distance between the piston rods of each group of second blocking cylinders are both less than the width of the firecracker cake. When their piston rods extend out of the tray, they can block the firecracker cake from moving forward.

6. The firecracker cake stacker according to claim 3, wherein The pancake pushing mechanism includes a pancake pushing cylinder fixed on the tray and a push plate disposed on the piston rod of the pancake pushing cylinder. The two pancake pushing mechanisms correspond to the pancake positions located on both sides of the first and second pancake positions in the pancake receiving area and the pancake pushing area of ​​the tray, respectively.

7. The firecracker cake stacker according to claim 3, wherein The pushing mechanism includes pushing cylinders fixed to both sides of the tray, and sliding plates connected to the piston rods of each pushing cylinder, which move back and forth along the tray. The piston rods are slidably engaged with guide blocks fixed to the bottom of the tray via guide rods to maintain stable movement. The sliding plates are slidably engaged with guide rods fixed to the bottom of the tray via sliders to maintain stable movement. A lever mechanism is provided between the two sliding plates via a horizontal plate. The lever mechanism includes a lever cylinder fixed to the horizontal plate, a connecting rod driven by the lever cylinder, a swing rod driven by the connecting rod, and a lever connected to the swing rod for raking the firecracker cakes off the tray. The lever cylinder includes a fixed... The two cylinders are fixed at both ends of the horizontal plate. Each cylinder is connected to a connecting rod. Each connecting rod includes three sections of support rods connected by hinges. The piston rod of the cylinder is hinged to the support rod at one end of the connecting rod by a hinge. Each connecting rod is hinged to four rocker arms by hinges between the support rods and on the support rods at both ends. The four rocker arms on the two connecting rods form eight rocker arms that are staggered. Each rocker arm is fixedly connected to a rotating shaft on the horizontal plate. At the same end of each rotating shaft, there are two cylinders arranged in a line. Each pair of cylinders corresponds to one disc position, and the distance between them is less than the width of the firecracker disc.

8. The firecracker cake stacker according to claim 6, wherein The tongue plate mechanism includes two tongue plate cylinders fixed to the bottom of the tray, a connector fixed to the piston rods of the two tongue plate cylinders, and several tongue plates fixed to the connector and located at the front end of the bottom of the tray. Each tongue plate has a slide rail at its bottom that cooperates with a slide groove fixed to the bottom of the tray. Guide rods are fixed to both ends of the connector and cooperate with sliders fixed to the bottom of the tray to maintain the stability of the tongue plate mechanism. Each tongue plate corresponds to one disc position.

9. The firecracker cake stacker according to claim 3, wherein The pancake-pulling mechanism includes a guide rod and a synchronous belt mechanism fixed on the lifting frame, and a pancake-pulling assembly driven by the synchronous belt mechanism to move back and forth laterally along the guide rod; the synchronous belt mechanism includes a servo motor fixed on the lifting frame and a synchronous belt driven by the servo motor; the pancake-pulling assembly includes a mounting base sleeved on the guide rod and fixed to the synchronous belt, a pancake-pulling block fixed on the mounting base and a pancake-pushing cylinder located on both sides of the pancake-pulling block, a lifting cylinder connected to the piston rod of the pancake-pushing cylinder, and a push plate connected to the piston rod of the lifting cylinder; each pancake-pushing cylinder (1068) has a magnetic switch at its front end.

10. The firecracker cake stacker according to claim 1, wherein The pallet conveying device includes a pallet lifting device located under the pallet inside the palletizing device gantry, a pallet transfer and discharge device connected to the pallet lifting device, and a pallet feeding device connected to the pallet transfer and discharge device.

11. The firecracker cake stacking machine according to claim 10, characterized in that: The palletizing lifting device includes a base, a roller frame mounted on the base via a lifting mechanism, and several rollers mounted on the roller frame and driven by a servo motor via a chain. The lifting mechanism includes a servo motor fixed on the base and four gear screw mechanisms fixed at the four corners of the base. The servo motor is connected to two gear screw mechanisms on one side of the base via a linkage shaft. The two gear screw mechanisms on this side are respectively connected to two gear screw mechanisms on the other side of the base via a linkage shaft. The screws in the gear screw mechanisms are connected to the roller frame. Photoelectric sensors are provided at the front and rear of the roller frame.

12. The firecracker cake stacking machine according to claim 10, characterized in that: The pallet transfer and discharge device includes a frame, a lower roller frame and an upper roller frame mounted on the frame, several rollers mounted on the lower roller frame and the upper roller frame respectively, and servo motors that drive each roller via chains; photoelectric sensors are respectively provided at the front and rear of the lower roller frame and the upper roller frame.

13. The firecracker cake stacking machine according to claim 10, characterized in that: The pallet feeding device includes a frame, a roller frame mounted on the frame, and several rollers mounted on the roller frame and driven by a servo motor via a chain; photoelectric sensors are respectively installed at the front and rear of the roller frame.

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