Punching steel sheet stacker crane

Abstract

The invention belongs to the technical field of stacking machines, and particularly provides a punching steel sheet stacking machine which comprises a stacking box, a multi-linkage-rod type stacking assembly is arranged on the upper wall of the stacking box, a stacking receiving device is arranged on the inner wall of the stacking box, a conveyor is arranged on the inner bottom wall of the stacking box, and the multi-linkage-rod type stacking assembly is in control connection with the stacking receiving device. The multi-linkage-rod type stacking assembly is creatively designed, automatic temporary bearing, automatic stacking and automatic centering calibration of the oval punched steel sheets are achieved through a single power source, stacking deflection and toppling are effectively prevented, buffering is provided for the oval punched steel sheets through the temporary bearing mode, and the safety of the oval punched steel sheets is improved. According to the automatic stacking device for the oval punched steel sheets, the stacked oval punched steel sheets are prevented from being scratched, meanwhile, the movement of the oval punched steel sheets is converted into a control instruction for equipment operation by means of an ingenious electric control mode, the stacking receiving device is automatically controlled in an automatic distance measuring mode, and the technical effect of automatic stacking is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of palletizers, and in particular relates to a punched steel sheet palletizer. Background Art

[0002] During the production process of oval punched steel sheets, the punched steel sheets need to be transported one by one by means of a conveyor belt and palletized by means of a palletizing device to achieve product packaging. In the existing technology, the palletizing of oval punched steel sheets has many technical problems: (1) Due to the special shape of the oval punched steel sheets, the existing technology is prone to automatic stacking due to the skewness of individual oval punched steel sheets, resulting in uneven stacking and even causing the stack to fall over; (2) During the palletizing process, the newly dropped oval punched steel sheets are prone to tilting during the falling process. When they fall onto the upper surface of the palletized oval punched steel sheets, the newly dropped oval punched steel sheets are prone to scratching the palletized oval punched steel sheets, thereby reducing the product qualification rate; (3) As the stacking progresses, the height of the stack will gradually increase. It is necessary to manually adjust the height of the supporting base plate at the bottom of the stack to ensure that the stacking continues, which is a cumbersome operation. (4) The control system of existing automatic palletizing equipment is relatively complex and requires multiple power devices to achieve automatic palletizing, which is costly. Summary of the Invention

[0003] In response to the above technical problems, the present invention provides a punched steel sheet stacker, which creatively designs a multi-link stacking assembly. Through a single power source, it realizes automatic temporary acceptance, automatic stacking and automatic centering calibration of elliptical punched steel sheets, effectively preventing the stacking from tilting and tipping. The temporary acceptance method also provides a buffer for the elliptical punched steel sheets to prevent scratches on the stacked elliptical punched steel sheets. At the same time, the present invention also uses an ingenious electrical control method to convert the movement of the elliptical punched steel sheets into control instructions for equipment operation, and automatically controls the stacking receiver through automatic distance measurement, thereby achieving the technical effect of automatic stacking.

[0004] The technical solution adopted by the present invention is as follows: This solution provides a punched steel sheet palletizer, which is used to receive and automatically stack the elliptical punched steel sheets transmitted by the conveyor belt. The main structure of the punched steel sheet palletizer is a stacking box, and the upper wall of the stacking box is provided with a multi-link type stacking assembly, which is used to temporarily receive the elliptical punched steel sheets dropped from the terminal of the conveyor belt, and then calibrate the position of the elliptical punched steel sheets, and reorganize the stacked elliptical punched steel sheets. The inner wall of the stacking box is provided with a stacking receiver, which is located below the multi-link type stacking assembly and is used to receive the oval punched steel sheets. The multi-link type stacking assembly is controlled and connected to the stacking receiver. The multi-link type stacking assembly can automatically adjust the height of the stacking receiver to keep the height of the top of the stack within a stable range. The bottom wall of the stacking box is provided with a conveyor, which is used to transfer the oval punched steel sheets in the stacking receiver out of the stacking box. The upper wall of the stacking box is provided with a passage hole. The stacking box is provided with a plurality of palletizing means, the plurality of palletizing means are provided with a plurality of palletizing means, and the plurality of palletizing means are provided with a plurality of palletizing means.

[0005] As a preferred solution of the present invention, the paddle assembly includes a T-plate, a rocker arm, a paddle rod and a support rod. The support rod is symmetrically distributed and fixed on the upper wall of the stacking box. Two paddle rods are provided and corresponding to the support rod. The middle part of the paddle rod is rotatably arranged on the support rod. The T-plate is fixed to the longitudinal slider. The two ends of the rocker arm are respectively rotatably connected to the T-plate and one end of the paddle rod. A measurement and control assembly is provided through one of the paddle rods. The measurement and control assembly includes a touch switch and an infrared ranging probe. The touch switch is located on the upper wall of the paddle rod, and the infrared ranging probe is located on the lower wall of the paddle rod. The touch switch is electrically connected to the telescopic cylinder.

[0006] A push switch is fixedly provided at the end of the base portion of the telescopic cylinder. The push switch is located on the movement path of the longitudinal slider connected to the telescopic cylinder. The push switch is electrically connected to the infrared ranging probe.

[0007] In this scheme, the pushing component includes a pushing bar, a pushing roller and a pushing rod. The pushing bar is slidably arranged on the horizontal slider, the pushing rollers are symmetrically distributed and fixed at the end of the pushing bar, the pushing rollers are located in the passage hole, and the pushing rods are symmetrically distributed on both sides of the pushing bar. One end of the pushing rod is rotatably connected to the pushing bar, and the other end of the push rod is rotatably connected to the middle part of the connecting rod close to it.

[0008] As a further optimization of this solution, the stacking adapter consists of a guide rail 1 vertically fixed on the inner wall of the stacking box, a slide vertically slidably connected to the guide rail 1, and a lifting motor fixedly installed on the inner wall of the stacking box. A lifting screw is rotatably provided on the guide rail 1, and the lifting screw thread passes through the slide. The lifting motor and the slide are arranged through a lifting screw transmission arrangement, which is used to drive the slide to slide up and down along the guide rail 1. The lifting motor in the stacking adapter is electrically connected to the infrared ranging probe.

[0009] In this solution, the conveyor consists of a guide rail 2 fixedly mounted horizontally on the bottom wall of the palletizing box, a conveying block sliding horizontally on the guide rail 2, and a conveying motor fixedly mounted on the lower wall of the guide rail 2. A conveying screw is rotatably mounted on the guide rail 2, and the conveying screw thread passes through the conveying block. The conveying motor and the conveying block are driven by the conveying screw to drive the conveying block to slide horizontally along the guide rail 2.

[0010] As another preferred embodiment of the present invention, the paddle assembly includes a rocker arm, a paddle rod and a support rod one. The support rod one is symmetrically distributed and fixed on the upper wall of the stacking box. Two paddle rods are provided and are arranged corresponding to the support rod one. The middle part of the paddle rod is rotatably arranged on the support rod one, and the two ends of the rocker arm are respectively rotatably connected to the middle part of the connecting rod and one end of the paddle rod.

[0011] When the paddle assembly temporarily takes over the elliptical punched steel sheet, in order to perform preliminary positioning and calibration of the elliptical punched steel sheet, positioning strips are installed around the passage holes on the upper wall of the stacking box. Elastic limiting wires are fixed to the positioning strips. When the elliptical punched steel sheet falls onto the paddle assembly, it automatically falls between the elastic limiting wires and is limited by the elastic limiting wires, thereby achieving preliminary positioning of the elliptical punched steel sheet.

[0012] The beneficial effects achieved by the present invention are as follows: (1) The present invention creatively designs a multi-link type stacking assembly, which realizes automatic temporary reception, automatic stacking and automatic centering calibration of elliptical punched steel sheets by using a single telescopic cylinder as a power source, effectively preventing the stacking from tilting and falling. The temporary reception method also provides a buffer for the elliptical punched steel sheets, preventing the newly fallen elliptical punched steel sheets from scratching the stacked elliptical punched steel sheets. At the same time, the present invention also uses a clever electrical control method to convert the movement of the elliptical punched steel sheets into control instructions for equipment operation, and automatically controls the stacking receiver by automatic distance measurement, so that the stacking receiver can automatically adjust the height, achieving the technical effect of automatic stacking; (2) The paddle assembly and the pusher assembly form an integral whole through four connecting rods. With the telescopic movement of the telescopic cylinder, the paddle assembly and the pusher assembly work in an organically coordinated and unified manner. When the paddle assembly temporarily holds the oval-shaped punched steel sheet, the pusher assembly moves away from the oval-shaped punched steel sheet. After the paddle assembly releases the oval-shaped punched steel sheet, the pusher assembly automatically approaches and collides with the oval-shaped punched steel sheet to achieve automatic palletizing and automatic centering and calibration. (3) The present invention adopts a clever electrical control design. When the oval-shaped punched steel sheet touches the touch switch, the telescopic cylinder performs one elongation and contraction action. This design method enables the telescopic cylinder to automatically start running and perform release palletizing and centering calibration on the oval-shaped punched steel sheet when the oval-shaped punched steel sheet falls onto the paddle assembly. When the push switch is pressed, the infrared ranging probe is powered on for one ranging. When the infrared ranging probe measures that the distance between it and the uppermost oval-shaped punched steel sheet in the palletized stack is relatively small, the lifting motor runs once and the sliding table descends a certain distance, so that the overall oval-shaped punched steel sheets in the palletized stack descend, leaving space for subsequent palletizing. (4) When the oval-shaped punched steel sheet falls onto the paddle assembly, it automatically falls between the elastic limit wires and is limited by the elastic limit wires to achieve preliminary positioning of the oval-shaped punched steel sheet. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of a punching steel sheet palletizing machine in Embodiment 1 of the present invention; Figure 2 It is a schematic structural diagram of a punching steel sheet palletizing machine in Embodiment 1 of the present invention after removing the cover plate; Figure 3 It is a schematic structural diagram of the upper wall of the palletizing box and the multi-link type palletizing assembly in Embodiment 1; Figure 4 It is a top view of the multi-link type palletizing assembly in Embodiment 1 when the telescopic cylinder is in the extended state; Figure 5 It is a top view of the multi-link type palletizing assembly in Embodiment 1 when the telescopic cylinder is in the contracted state; Figure 6 It is Figure 3 a partial enlarged view of part A in Figure 7 It is a schematic structural diagram of the stacking receiver in Embodiment 1; Figure 8 It is a schematic structural diagram of the conveyor in Embodiment 1; Figure 9 It is a schematic structural diagram of a punching steel sheet palletizing machine in Embodiment 2 of the present invention; Figure 10 It is a top view of the multi-link type palletizing assembly in Embodiment 3 when the telescopic cylinder is in the extended state.

[0014] Among them, 1. Palletizing box, 11. Passage hole, 12. Discharge door, 13. Positioning strip, 131. Elastic limit wire, 14. Cover plate, 141. Palletizing hole, 15. Longitudinal slide rail, 16. Transverse slide rail, 2. Multi-link palletizing component, 21. Telescopic cylinder, 211. Press switch, 22. Longitudinal slider, 23. Transverse slider, 24. Connecting rod, 25. Paddle component, 251. T plate, 252. Swing rod, 253. Paddle rod, 254. First support rod, 255. Measurement and control component, 256. Touch switch, 257. Infrared ranging probe, 26. Pushing middle component, 261. Push bar, 262. Push roller, 263. Push rod, 3. Stacking receiver, 31. First guide rail, 311. Lifting screw, 312. First sprocket, 32. Slide table, 321. Offside groove, 322. Support frame, 323. Underframe, 324. Support rod, 325. Support plate, 326. Spring, 33. Lifting motor, 331. Second sprocket, 34. First chain, 4. Conveyor, 41. Second guide rail, 411. Conveyor screw, 412. Third sprocket, 42. Conveyor block, 43. Conveyor motor, 431. Fourth sprocket, 44. Second chain.

[0015] The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. Detailed implementation manners

[0016] Example 1: Please refer to Figures 1 - 6The present embodiment provides a punched steel sheet palletizer for receiving and automatically stacking elliptical punched steel sheets transmitted by a conveyor belt. The main structure of the punched steel sheet palletizer is a palletizing box 1. A cover plate 14 is hinged on the upper wall of the palletizing box 1. A multi-link type palletizing assembly 2 is provided on the upper wall of the palletizing box 1. The multi-link type palletizing assembly 2 is used to temporarily receive the elliptical punched steel sheets dropped from the terminal of the conveyor belt, and then calibrate the position of the elliptical punched steel sheets and reorganize the stacked elliptical punched steel sheets. A through hole 11 is opened on the upper wall of the palletizing box 1. The multi-link type palletizing assembly 2 is located at the through hole 11. The cut steel sheets are stacked at the passage hole 11, and the cover plate 14 can cover the multi-link type stacking assembly 2, which improves the safety of the equipment and makes the appearance of the equipment simpler. The cover plate 14 is provided with a stacking hole 141, which is arranged corresponding to the passage hole 11. The inner wall of the stacking box 1 is provided with a stacking receiver 3, which is located below the multi-link type stacking assembly 2 and is used to receive the elliptical punched steel sheets. The multi-link type stacking assembly 2 is controlled and connected to the stacking receiver 3. The multi-link type stacking assembly 2 can enable the stacking receiver 3 to automatically adjust the work station height, so that the height of the stacking top is kept within a stable range. A conveyor 4 is provided on the bottom wall of the palletizing box 1. The conveyor 4 is used to transfer the stack of elliptical punched steel sheets in the stacking receiver 3 out of the palletizing box 1. The upper wall of the palletizing box 1 is symmetrically bolted with longitudinal slide rails 15, and the upper wall of the palletizing box 1 is symmetrically bolted with transverse slide rails 16. The longitudinal slide rails 15 and the transverse slide rails 16 are cross-distributed around the passage hole 11. A discharge door 12 is provided on the side wall of the palletizing box 1. The multi-link palletizing assembly 2 includes a telescopic cylinder 21, a longitudinal slider 22, a transverse slider 23, a connecting rod 24, a paddle assembly 25 and a push assembly 26. The telescopic cylinder 21 is fixedly connected to the upper wall of the palletizing box 1. The telescopic direction of the telescopic cylinder 21 is consistent with the direction of the longitudinal slide rail 15. The longitudinal sliders 22 are symmetrically distributed and slidably connected to the longitudinal slide rail 15 on the upper wall of the palletizing box 1. One of the longitudinal sliders 22 is fixedly connected to the output end of the telescopic cylinder 21. The transverse sliders 23 are symmetrically distributed and slidably connected to the transverse slide rail 16 on the upper wall of the palletizing box 1. The transverse sliders 23 and the longitudinal sliders 22 are cross-distributed around the through hole 11. The two ends of the connecting rod 24 are respectively hinged to the adjacent transverse sliders 23 and longitudinal sliders 22. There are four connecting rods 24. The paddle assembly 25 is provided on the upper wall of the palletizing box 1, and the push assembly 26 is provided on the transverse slider 23.

[0017] In this embodiment, the paddle assembly 25 includes a T-plate 251, a swing rod 252, a paddle rod 253, and a first support rod 254. The first support rods 254 are symmetrically distributed and fixedly arranged on the upper wall of the palletizing box 1. There are two paddle rods 253, which are correspondingly arranged with the first support rods 254. The middle part of the paddle rod 253 is rotatably arranged on the first support rod 254. The T-plate 251 is fixedly connected to the longitudinal slider 22. The two ends of the swing rod 252 are respectively rotatably connected to the T-plate 251 and one end of the paddle rod 253. A measurement and control assembly 255 is penetrated through one of the paddle rods 253. The measurement and control assembly 255 includes a touch switch 256 and an infrared distance measurement probe 257. The touch switch 256 is located on the upper wall of the paddle rod 253, and the infrared distance measurement probe 257 is located on the lower wall of the paddle rod 253. The touch switch 256 is electrically connected to the telescopic cylinder 21. When the oval punching steel sheet touches the touch switch 256, the telescopic cylinder 21 performs one elongation and contraction action. A pressure switch 211 is fixedly arranged at the end of the base part of the telescopic cylinder 21. The pressure switch 211 is located on the movement path of the longitudinal slider 22 connected to the telescopic cylinder 21. The pressure switch 211 is electrically connected to the infrared distance measurement probe 257. When the pressure switch 211 is pressed, the infrared distance measurement probe 257 is powered on for a distance measurement. At this time, the telescopic cylinder 21 is in a contracted state, and the multi-link palletizing assembly 2 is in the Figure 5 state as shown. The paddle rod 253 is located above the stacked oval punching steel sheets, and the infrared distance measurement probe 257 measures the distance between it and the uppermost stacked oval punching steel sheet.

[0018] In this embodiment, the pushing middle assembly 26 includes a push bar 261, a push roller 262, and a push rod 263. The push bar 261 is slidably arranged on the transverse slider 23. The push rollers 262 are symmetrically distributed and fixedly arranged at the ends of the push bar 261. The push rollers 262 are located in the passing holes 11. The push rods 263 are symmetrically distributed on both sides of the push bar 261. One end of the push rod 263 is rotatably connected to the push bar 261, and the other end of the push rod 263 is rotatably connected to the middle part of the adjacent connecting rod 24.

[0019] As Figure 1 , Figure 6 and Figure 7As shown, in this embodiment, the stacking adapter 3 is composed of a guide rail 1 31 vertically fixed to the inner wall of the stacking box 1, a slide 32 vertically slidingly connected to the guide rail 1 31, and a lifting motor 33 fixedly installed on the inner wall of the stacking box 1. A lifting screw 311 is rotatably provided on the guide rail 1 31, and the lifting screw 311 is threaded through the slide 32. A sprocket 1 312 is coaxially fixed to the lower end of the lifting screw 311, and a sprocket 2 331 is coaxially fixed to the output shaft of the lifting motor 33. A chain 1 34 is wound between the sprocket 1 312 and the sprocket 2 331. The lifting motor 33 and the slide 32 are driven by the lifting screw 311. This can drive the slide 32 to slide up and down along the guide rail 31, and the lifting motor 33 is electrically connected to the infrared ranging probe 257. When the infrared ranging probe 257 measures that the distance between it and the top layer of stacked elliptical punched steel sheets is small, the lifting motor 33 runs once and causes the slide 32 to drop a certain distance, thereby causing the stacked elliptical punched steel sheets to drop as a whole, leaving space for subsequent stacking. An offside groove 321 is provided on the upper wall of the slide 32, and support frames 322 are symmetrically distributed and fixed on both sides of the upper wall of the slide 32. The support frames 322 can rise and enter the space between the push rollers 262 to directly receive the stacked elliptical punched steel sheets.

[0020] like Figure 1 、 Figure 7 and Figure 8 As shown, in this embodiment, the conveyor 4 is composed of a guide rail 2 41 fixedly mounted horizontally on the inner bottom wall of the stacking box 1, a conveying block 42 slidingly arranged on the guide rail 2 41, and a conveying motor 43 fixedly mounted on the lower wall of the guide rail 2 41. A conveying screw 411 is rotatably mounted on the guide rail 2 41, and the conveying screw 411 is threaded through the conveying block 42. A sprocket 3 412 is coaxially fixed to the end of the conveying screw 411 close to the guide rail 1 31, and a sprocket 431 is coaxially fixed to the output shaft of the conveying motor 43. A chain 2 44 is wound between the sprocket 3 412 and the sprocket 431. The conveying motor 43 and the conveying block 42 are driven by the conveying screw 411, and are used to drive the conveying block 42 to slide horizontally along the guide rail 2 41. The clearance size of the offside slot 321 is larger than the size of the conveying block 42, ensuring that the slide 32 can smoothly descend to the bottom of the conveying block 42.

[0021] like Figures 1 - 3As shown in the figure, when the paddle assembly 25 temporarily holds the oval punched steel sheet, in order to perform preliminary positioning and calibration on the oval punched steel sheet, four positioning bars 13 are installed around the passing hole 11 on the upper wall of the palletizing box 1 by bolts. The positioning bars 13 are respectively located on the sides of the first support rod 254. Elastic limit wires 131 are fixedly connected to the positioning bars 13. To prevent the elastic limit wires 131 from blocking the smooth entry of the oval punched steel sheet onto the paddle assembly 25, the lengths of the two elastic limit wires 131 away from the telescopic cylinder 21 are shorter. The elastic limit wires 131 are made of aluminum alloy. When the oval punched steel sheet falls onto the paddle assembly 25, it automatically falls between the elastic limit wires 131 and is limited by the elastic limit wires 131, realizing the preliminary positioning of the oval punched steel sheet.

[0022] The specific usage process of this embodiment is as follows: Place the palletizing box 1 below the end of the conveyor belt of the steel sheet punching machine, with the end of the conveyor belt aligned with the palletizing hole 141. The oval punched steel sheet punched by the steel sheet punching machine falls onto the conveyor belt and is transported to the palletizing hole 141 along with the conveyor belt. In the initial state, the telescopic cylinder 21 is in a contracted state ( Figure 5 ), the sliding table 32 is at the upper end of the first guide rail 31, facilitating the reception of the oval punched steel sheet. The conveying block 42 is located directly below the passing hole 11, facilitating the reception of the oval punched steel sheet after palletizing; After the oval punched steel sheet falls from the conveyor belt, it lands on the paddle rod 253. The elastic limit wires 131 limit and preliminarily position the oval punched steel sheet. The four paddle rods 253 temporarily support the oval punched steel sheet. The touch switch 256 is affected by the touch of the oval punched steel sheet, causing the telescopic cylinder 21 to perform one extension and contraction action. After the telescopic cylinder 21 extends, the multi-link palletizing assembly 2 changes from the state in Figure 5 to the state in Figure 4 , that is: the telescopic cylinder 21 pushes the longitudinal slider 22 connected to it to slide towards the passing hole 11. The T-plate 251 follows the movement. Under the driving action of the T-plate 251, the swing rod 252 drives the paddle rod 253 to rotate. The paddle rod 253 rotates out of the area where the oval punched steel sheet is located and no longer supports the oval punched steel sheet. The oval punched steel sheet falls onto the support frame 322 under the action of gravity. Under the action of the connecting rod 24, the longitudinal slider 22 causes the transverse slider 23 to slide away from the passing hole 11. Due to the movement of the connecting rod 24, the push rod 263 will move, and the included angle between the two connecting rods 24 on both sides of the push bar 261 becomes smaller. Therefore, the included angle between the two push rods 263 on the push bar 261 also becomes smaller. The push rods 263 will push the push bar 261 to slide towards the passing hole 11. Under the linkage action of the four connecting rods 24, the overall state of the multi-link palletizing assembly 2 changes from Figure 5 to Figure 4The push bar 261 drives the push roller 262 to move toward the elliptical punched steel sheet dropped onto the support frame 322, and performs collision positioning calibration on the elliptical punched steel sheet. Then, the telescopic cylinder 21 starts to perform the contraction action, and the overall state of the multi-link type palletizing assembly 2 will change from Figure 4 Transformed into Figure 5 The paddle lever 253 will rotate to the area where the elliptical punched steel sheet is located to temporarily take over the next elliptical punched steel sheet. At this time, the infrared ranging probe 257 is located above the stacked elliptical punched steel sheet.

[0023] When the telescopic cylinder 21 contracts, it touches the push switch 211, and the infrared ranging probe 257 is energized to perform a distance measurement. The infrared ranging probe 257 measures the distance between itself and the top layer of the stacked elliptical punched steel sheets. When the infrared ranging probe 257 measures that the distance between itself and the top layer of the stacked elliptical punched steel sheets is small, the lifting motor 33 runs once, driving the sprocket 2 331 to rotate, and the sprocket 1 312 to rotate through the chain 1 34, thereby causing the lifting screw 311 to rotate, and the lifting screw 311 drives the slide 32 to descend a distance along the guide rail 1 31, thereby causing the stacked elliptical punched steel sheets to descend as a whole, leaving space for subsequent stacking.

[0024] After palletizing is completed, the lifting motor 33 continues to run and drives the slide 32 to continue to descend, and the offside slot 321 passes over the conveying block 42. When the elliptical punched steel sheet on the bottom layer falls smoothly to the upper wall of the conveying block 42, the conveying motor 43 drives the sprocket four 431 to rotate, and then drives the sprocket three 412 to rotate through the chain two 44, thereby rotating the conveying screw 411, and the conveying screw 411 drives the conveying block 42 to move toward the outside of the stacking box 1, thereby conveying the stacked elliptical punched steel sheet out of the stacking box 1, and then the stacking receiver 3 and the conveyor 4 run in reverse and reset, ready for the next palletizing.

[0025] Example 2: This example is based on Example 1. Please refer to Figure 9 The difference between this embodiment and the first embodiment is that the slide 32 is different from the first embodiment. In this embodiment, the lower wall of the slide 32 is symmetrically fixed with a base frame 323, and the upper surface of the slide 32 is symmetrically distributed and slidably penetrated with support rods 324. The support rods 324 slide through the base frame 323, and the upper ends of the support rods 324 are fixedly connected to a support plate 325. A spring 326 is sleeved on the support rod 324, and the two ends of the spring 326 are respectively fixedly connected to the outer wall of the support rod 324 and the upper wall of the base frame 323. The elastic force of the spring 326 makes the support plate 325 in a higher position in the initial state. When the elliptical punched steel sheets are gradually stacked on the support plate 325, the spring 326 is gradually compressed, and the support plate 325 will gradually descend until it is completely attached to the upper wall of the slide 32.

[0026] The specific usage method of this embodiment is basically the same as that of the first embodiment. The difference is only that the support plate 325 can move relative to the sliding table 32. In the initial state, the elastic force of the spring 326 makes the position of the support plate 325 relatively high. When the oval punching steel sheets are gradually stacked onto the support plate 325, the spring 326 is gradually compressed, and the support plate 325 will gradually descend until it completely adheres to the upper wall of the sliding table 32. This design method not only ensures that the support plate 325 can enter the space where the pushing roller 262 is located during the initial stacking, but also prevents collision and conflict with the pushing roller 262. Moreover, as the stacking progresses, the weight of the stacked oval punching steel sheets continuously increases, and the subsequent oval punching steel sheets are borne by the sliding table 32, improving the durability of the equipment and preventing the support rod 324 from breaking.

[0027] Embodiment 3: This embodiment is based on Embodiment 2. Please refer to Figure 10 , the difference between this embodiment and Embodiment 2 is that the paddle assembly 25 of this embodiment is different from that of Embodiment 2. In this embodiment, the paddle assembly 25 includes a swing rod 252, a paddle rod 253, and a first support rod 254. The first support rods 254 are symmetrically distributed and fixedly arranged on the upper wall of the stacking box 1. There are two paddle rods 253, which are correspondingly arranged with the first support rods 254. The middle part of the paddle rod 253 is rotatably arranged on the first support rod 254. The two ends of the swing rod 252 are respectively rotatably connected to the middle part of the connecting rod 24 and one end of the paddle rod 253.

[0028] When this embodiment is specifically used, the connecting rod 24 directly drives the swing rod 252 to move, achieving the same effect as Embodiment 2, but reducing the number of components and saving the consumables used in equipment production.

[0029] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto.

Claims

1. A punching steel sheet palletizer, comprising a palletizing box (1), characterized in that: The upper wall of the palletizing box (1) is provided with a multi-link palletizing assembly (2), and the inner wall of the palletizing box (1) is provided with a stacking receiver (3). The multi-link palletizing assembly (2) includes a telescopic cylinder (21), a longitudinal slider (22), a transverse slider (23), a connecting rod (24), a flap assembly (25) and a middle pushing assembly (26). The telescopic cylinder (21) is fixedly connected to the upper wall of the palletizing box (1). The longitudinal sliders (22) are symmetrically distributed and slidably connected to the upper wall of the palletizing box (1). One of the longitudinal sliders (22) is fixedly connected to the output end of the telescopic cylinder (21). The transverse sliders (23) are symmetrically distributed and slidably connected to the upper wall of the palletizing box (1). The transverse sliders (23) and the longitudinal sliders (22) are cross-distributed. Both ends of the connecting rod (24) are hinged to the transverse slider (23) and the longitudinal slider (22) respectively. The flap assembly (25) is arranged on the upper wall of the palletizing box (1), and the middle pushing assembly (26) is arranged on the transverse slider (23).

2. The stacker for punched steel sheets according to claim 1, characterized in that: The flap assembly (25) includes a T-plate (251), a swing rod (252), a flap rod (253) and a first support rod (254). The first support rods (254) are symmetrically distributed and fixedly arranged on the upper wall of the palletizing box (1). The middle of the flap rod (253) is rotatably arranged on the first support rod (254). The T-plate (251) is fixedly connected to the longitudinal slider (22). Both ends of the swing rod (252) are rotatably connected to the T-plate (251) and one end of the flap rod (253) respectively.

3. The stacking machine for punched steel sheets according to claim 1, wherein: The flap assembly (25) includes a swing rod (252), a flap rod (253) and a first support rod (254). The first support rods (254) are symmetrically distributed and fixedly arranged on the upper wall of the palletizing box (1). The middle of the flap rod (253) is rotatably arranged on the first support rod (254). Both ends of the swing rod (252) are rotatably connected to the middle of the connecting rod (24) and one end of the flap rod (253) respectively.

4. A punching steel sheet palletizer according to claim 2 or 3, characterized in that: One of the flap rods (253) is provided with a touch switch (256) and an infrared ranging probe (257). The touch switch (256) is electrically connected to the telescopic cylinder (21).

5. The stacker for punched steel sheets according to claim 4, characterized in that: The stacking receiver (3) is electrically controlled and connected to the infrared ranging probe (257).

6. The stacker for punched steel sheets according to claim 5, characterized in that: The base part of the telescopic cylinder (21) is provided with a pressure switch (211). The pressure switch (211) is located on the movement path of the longitudinal slider (22) connected to the telescopic cylinder (21). The pressure switch (211) is electrically connected to the infrared ranging probe (257).

7. A blanking steel sheet palletizing machine according to claim 1, characterized in that: The middle pushing assembly (26) includes a push bar (261) and a push rod (263). The push bar (261) is slidably arranged on the transverse slider (23). The push rods (263) are symmetrically distributed on both sides of the push bar (261). One end of the push rod (263) is rotatably connected to the push bar (261), and the other end of the push rod (263) is rotatably connected to the middle of the connecting rod (24) close to it.

8. The stacker for punching steel sheets according to claim 1, wherein: The upper wall of the palletizing box (1) is provided with a positioning strip (13), and an elastic limiting wire (131) is fixedly connected to the positioning strip (13).

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