Automatic palletizing equipment for packaging boxes used in the production of plastic junction boxes

Abstract

The present invention relates to the technical field of intelligent palletizing equipment, and specifically discloses an automatic palletizing device for packaging boxes used in the production of plastic junction boxes, comprising a robotic arm, wherein the end of the robotic arm is fixedly connected to a fixed sleeve rod, the bottom end of the fixed sleeve rod is fixedly connected to a fixed plate, and a positioning assembly is installed on the bottom surface of the fixed plate. The present invention drives two sets of opposing sliding plates and sliding side plates to synchronously move closer to or farther from each other through a driving assembly, so that the positioning assembly can maintain a square shape while its four sides expand or converge with each other around the fixed sleeve rod as the center point, ensuring that the square stack layer composed of packaging boxes is always located at the center of the device after being positioned by the positioning assembly, so that the packaging box stack layer can maintain the fixed sleeve rod as the center point each time it descends to the pallet, avoiding insufficient docking accuracy when different stack layers are connected during palletizing of packaging boxes, resulting in continuous shifting of the center of gravity of the stack body and insufficient stability of the stack body.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent palletizing equipment, and in particular to an automatic palletizing equipment for packaging boxes used in the production of plastic junction boxes. Background Art

[0002] Automatic palletizing equipment is a mechanical device used to automatically stack goods into stacks. It is widely used in production, logistics, warehousing and other fields. Automatic palletizing equipment mainly relies on the collaborative work of core components such as sensors, controllers and actuators to realize the automatic grasping, stacking and placing of goods. Among them, the robotic arm is an automated device that simulates the movements of the human arm. It can complete tasks such as grasping, handling and operation through the combination of multiple joints and connecting rods.

[0003] For example, Chinese patent number CN118579532B discloses an intelligent palletizing device for packaging boxes, comprising a robotic arm, a connecting frame assembly, and a box body, wherein the connecting frame assembly comprises an upper plate, a lower plate, and a connecting column, wherein the upper plate is connected to the end of the robotic arm, and the lower plate is located below the upper plate, and the two are fixedly connected by a connecting column. The above-mentioned solution, through the coordination between the inclined plate, the support mechanism, the push plate assembly 1, and the push plate assembly 2, enables the device to solve the problem of damage to packaging boxes during the palletizing and transportation process. The box body is transported to the inclined plate by the conveyor belt mechanism, so that the bottom end of the four-link assembly rotates downward and the push plate assembly 1 and the push plate assembly 2 are gathered together respectively, thereby positioning the box body stacked on the support mechanism. Since the box body is supported by the support mechanism and the positioning mechanism is only used to position the box body, the box body is prevented from being damaged during transportation.

[0004] However, since the above-mentioned intelligent palletizing equipment positions the boxes inside it through the mutual contraction of multiple baffles under the action of their own gravity and the four-bar linkage assembly during the palletizing process, and the contraction of multiple baffles is not synchronized, the positioning position of the box by the device is not fixed, that is, the box will deviate from the center of the device to the four directions where the baffles are located, so that the positions of the boxes in each layer may be staggered when the device is palletizing the boxes, resulting in a decrease in the stability of the stack during movement when the center of gravity of the stack is shifted, and even the stack may fall over, which affects the stability and safety of palletizing. Summary of the Invention

[0005] The object of the present invention is to provide an automatic palletizing device for packaging boxes used in the production of plastic junction boxes, so as to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: an automatic palletizing device for packaging boxes used in the production of plastic junction boxes, comprising a robotic arm, the end of the robotic arm being fixedly connected to a fixed sleeve rod, the bottom end of the fixed sleeve rod being fixedly connected to a fixed plate, a positioning assembly being mounted on the bottom surface of the fixed plate, the positioning assembly being composed of two sets of mutually perpendicular sliding plates and sliding side plates connected end to end to form a square frame, and every two adjacent sliding plates and sliding side plates being slidably connected by a connecting portion, and the sliding plates and sliding side plates being able to slide and adjust along the bottom surface of the fixed plate;

[0007] The utility model also comprises a driving assembly, which is used for driving two groups of opposite sliding plates and sliding side plates to move closer to or farther away from each other synchronously.

[0008] Preferably, the driving assembly includes a sliding rod installed in a fixed sleeve rod and capable of sliding adjustment, a sliding ring is slidably installed on the outer wall of the fixed sleeve rod, a spline groove is provided on the outer wall of the fixed sleeve rod, the inner wall of the sliding ring and the outer wall of the fixed sleeve rod are fixedly connected by a connecting block slidably installed in the spline groove, a pull rod is rotatably connected between the sliding ring and each connecting part, and a square groove for the pull rod to pass through is provided on the fixed plate.

[0009] Preferably, the connecting part includes a cross slide groove opened on both sides of the sliding plate, and the sliding side plates are provided with protrusions that can be vertically inserted into the cross slide groove, and a straight through groove is opened on the protrusion, and a sliding pin that is also located in the straight through groove is slidably installed on the bottom surface of the cross slide groove, and the sliding pin is rotatably connected to one end of the pull rod.

[0010] Preferably, corner blocks are fixedly installed at the four corners of the bottom surface of the fixed plate, and each corner block is provided with a cavity near the side wall of the sliding rod, and a sliding frame that can be adjusted to slide back and forth vertically is installed on the inner side wall of the cavity, and a slide plate is slidably installed in the sliding frame, and the slide plate is rotatably connected to the inner side wall of the cavity through a rotating rod, and a fixing rod is fixedly installed on the side wall of the slide plate, and a fastening block is fixedly connected to the end of the fixing rod.

[0011] Preferably, a connecting rod is rotatably connected between the sliding pin and the sliding frame, and a rotating groove for the connecting rod to rotate is provided on the top surface of the fixing plate.

[0012] Preferably, the bottom surfaces of the fastening blocks are provided with spatial positioning devices.

[0013] Preferably, a pin hole is provided on the inner wall of the cavity, a sliding pin is slidably installed in the pin hole, a spring is provided between the side wall of the sliding pin and the inner wall of the pin hole, and a circular groove for inserting the sliding pin is provided at the center line of the outer wall of the rotating rod.

[0014] Preferably, the fixing rod is configured as an elastic telescopic rod, and the inner wall of the fastening block is configured as an elastic layer.

[0015] Preferably, the bottom end of the corner block is lower than the bottom end of the packaging box.

[0016] Preferably, the height of the sliding plate and the sliding side plate is half of the height of the packaging box, and the bottom ends of both are provided with mounting grooves for the extension plate to be embedded.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] First, the present invention uses a driving assembly to drive two sets of opposing sliding plates and sliding side plates to synchronously move toward or away from each other, thereby allowing the positioning assembly to maintain a square shape while causing its four sides to expand or converge with each other around the fixed sleeve rod as the center point. This ensures that a square stack of packaging boxes is always located at the center of the device after being positioned by the positioning assembly, so that the stack of packaging boxes can remain centered around the fixed sleeve rod each time it descends to the pallet, avoiding insufficient docking accuracy when different stacks of packaging boxes are connected during palletizing, resulting in continuous shifting of the center of gravity of the stack and insufficient stability of the stack.

[0019] 2. According to the present invention, after the packaging box falls onto the top surface of the pallet or the stack body, as the sliding ring moves downward and drives the two sets of sliding plates and the sliding side plates to expand outward, the external driving structure drives the sliding frame to slide along the cavity, so that the rotating rod is in a horizontal state, and the fixed rod and the fastening block are pushed out together to perform secondary positioning of the packaging box, so that the positioning center of the packaging box coincides with the center of the pallet or is aligned with the positioning center of other stacking layers, thereby improving the positioning accuracy of the stack body during stacking, and then the sliding frame continues to slide down, so that the fastening block is separated from the contact with the packaging box, and the robotic arm is lifted to complete the stacking of the stack layer, and then the sliding frame is slid up and reset to continue stacking the next stack layer.

[0020] 3. The present invention drives the fastening blocks closer to each other during the outward expansion of the sliding plate and the sliding side plates to perform secondary positioning of the packaging box and then releases the clamping of the packaging box. At the same time, the spatial positioning device is used to perform depth docking positioning on the stacking tray and the stack body respectively, further improving the positioning accuracy when the stack layer and the stack body are docked, thereby optimizing the center of gravity position distribution of the stack body and the stability of the stack body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the present invention;

[0022] Figure 2 Schematic diagram of the three-dimensional structure of the output end of the robotic arm in the present invention;

[0023] Figure 3 A side cross-sectional view of the output end of the robotic arm of the present invention;

[0024] Figure 4 For the present invention Figure 3 Isometric structural drawing of

[0025] Figure 5 A cross-sectional view of the output end of the robot arm along a diagonal line of the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the sliding plate and the sliding side plate in the present invention;

[0027] Figure 7 Schematic diagram of the three-dimensional structure of the sliding plate in the present invention;

[0028] Figure 8 Schematic diagram of the three-dimensional structure of the sliding side plate in the present invention;

[0029] Figure 9 A top view of the stack body and stack tray of the present invention;

[0030] Figure 10 For the present invention Figure 5 A partial enlarged view of point A in the middle.

[0031] In the figure: 1. Robotic arm; 2. Fixed sleeve rod; 3. Sliding ring; 4. Pull rod; 5. Fixed plate; 6. Corner block; 7. Sliding rod; 8. Fastening block; 9. Sliding pin; 10. Sliding plate; 11. Sliding side plate; 12. Sliding frame; 13. Connecting rod; 14. Cross slide; 15. Straight groove; 16. Rotating rod; 17. Fixed rod; 18. Spatial positioning device; 19. Cavity; 20. Rotating groove; 21. Sliding pin; 22. Slide plate. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figures 1 to 10 The present invention provides a technical solution: an automatic palletizing device for packaging boxes used in the production of plastic junction boxes, comprising a robotic arm 1, wherein the end of the robotic arm 1 is fixedly connected to a fixed sleeve rod 2, the bottom end of the fixed sleeve rod 2 is fixedly connected to a fixed plate 5, a positioning assembly is installed on the bottom surface of the fixed plate 5, and the positioning assembly is composed of two sets of mutually perpendicular sliding plates 10 and sliding side plates 11 connected end to end to form a square frame, and every two adjacent sliding plates 10 and sliding side plates 11 are slidably connected by a connecting portion, and the sliding plates 10 and sliding side plates 11 can be slidably adjusted along the bottom surface of the fixed plate 5;

[0034] The device further comprises a driving assembly for driving the two sets of opposite sliding plates 10 and sliding side plates 11 to move synchronously closer to or farther from each other.

[0035] When the device is in use, the external driving structure is first used to drive the mechanical arm 1 to move so that its output end is perpendicular to the top of the packaging box conveying device to grab the packaging box on the conveying device. At this time, the driving component adjusts the two sets of sliding plates 10 and the sliding side plates 11 to move away from each other synchronously, so that the square frame formed by the two sets of sliding plates 10 and the sliding side plates 11 expands outward with the fixed sleeve rod 2 as the center point to form a large-volume square frame. Then, the mechanical arm 1 is driven to make the top surface of the box body contact and resist the top surface of the fixed plate 5. Then, the driving component drives the two sets of sliding plates 10 and the sliding side plates 11 to move closer to each other, and the packaging boxes therein are positioned and clamped, so that the packaging boxes gather together to form a large-volume square frame. The pallet is then moved to a desired location so that the pallet is held in a desired position and the pallet is moved to a desired location so that the pallet is held in a desired position. The pallet is then moved to a desired location so that the pallet is held in a desired position and the pallet is moved to a desired location so that the pallet is held in a desired position. The pallet is then moved to a desired location so that the pallet is held in a desired position and the pallet is moved to a desired location so that the pallet is held in a desired position. The pallet is then moved to a desired location so that the pallet is held in a desired position and the pallet is moved to a desired location so that the pallet is held in a desired position.

[0036] In this way, by driving the two sets of opposite sliding plates 10 and sliding side plates 11 to synchronously move closer to or farther from each other, the positioning assembly can be kept square while its four sides are expanded or gathered with the fixed sleeve rod 2 as the center point, ensuring that the square stack layer composed of packaging boxes is always in the center of the device after being positioned by the positioning assembly, so that the packaging box stack layer can maintain the fixed sleeve rod 2 as the center point each time it descends to the pallet, avoiding insufficient docking accuracy when different stack layers are connected during stacking of packaging boxes, resulting in continuous shifting of the center of gravity of the stack body and insufficient stability of the stack body.

[0037] Furthermore, the driving assembly includes a sliding rod 7 installed in the fixed sleeve rod 2 and capable of sliding adjustment. A sliding ring 3 is slidably installed on the outer wall of the fixed sleeve rod 2. A spline groove is provided on the outer wall of the fixed sleeve rod 2. The inner wall of the sliding ring 3 and the outer wall of the fixed sleeve rod 2 are fixedly connected by a connecting block slidably installed in the spline groove. A pull rod 4 is rotatably connected between the sliding ring 3 and each connecting part, and a square groove is provided on the fixed plate 5 for the pull rod 4 to pass through.

[0038] According to the above embodiment, a specific embodiment of the driving assembly is provided. When the fixed plate 5 contacts and abuts against the top surface of the packaging box, the micro cylinder in the robot arm 1 drives the sliding rod 7 to rise and pulls the sliding ring 3 to rise together. Figure 2At this time, the pull rod 4 rotates to shorten its horizontal length, and the two sets of opposite sliding plates 10 and sliding side plates 11 of the square frame can be driven inward by multiple pulling of multiple connecting parts to move synchronously closer to each other until the positioning and grasping of the packaging box are completed, and the square stack layer composed of the packaging boxes is moved to the top of the pallet by the robot arm 1, and the axis of the sliding rod 7 is aligned with the center of the pallet. When the packaging box is lowered to contact the top surface of the pallet or the top surface of the stack layer, the sliding rod 7 can be driven down by the micro cylinder to make the square frame spread out from the center to the surrounding area, thereby completing the placement of the stack layer of packaging boxes.

[0039] In this way, by driving the sliding ring 3 to slide back and forth vertically in the center of a predetermined stack of packaging boxes, and cooperating with the pull rod 4 to pull the two sets of sliding plates 10 and the sliding side plates 11 synchronously towards or away from each other, the positioning component can always maintain the positioning center of the packaging box at one point, avoiding the positioning center deviation of the positioning device, which makes it difficult to dock the positioning center of the packaging box stack with the pallet or stack body, so that different stack layers may be offset along the four sides of the square frame. As the stack body rises, the accumulation of offsets may cause the center of gravity of the stack body to deflect, so that when transportation tools such as forklifts transport the stack body, the center of gravity of the stack body is unstable and the stack falls over, affecting the safety or efficiency of logistics transportation.

[0040] Furthermore, the connecting part includes a cross slide 14 opened on both sides of the sliding plate 10, and protrusions that can be vertically inserted into the cross slide 14 are provided on both sides of the sliding side plate 11, and a straight through groove 15 is opened on the protrusion. The bottom surface of the cross slide 14 is slidably installed with a sliding pin 9 that is also located in the straight through groove 15, and the sliding pin 9 is rotatably connected to one end of the pull rod 4.

[0041] According to the above embodiment, a specific embodiment of the connection portion is provided. Since two sliding side plates 11 are inserted on both sides of each sliding plate 10, see Figure 6 When the sliding pin 9 located in the cross slide groove 14 and the straight through groove 15 at the same time slides back and forth horizontally along the diagonal of the square frame, the two sets of sliding plates 10 and sliding side plates 11 can be moved closer to or away from each other, that is, the packaging box inside can be positioned, clamped or placed, and by sliding the sliding plates 10 and sliding side plates 11 are all slidably installed on the bottom surface of the fixed plate 5, vertical movement limit is provided for the sliding plates 10 and sliding side plates 11 and the cross slide groove 14 and the straight through groove 15, so that the sliding pin 9 always maintains horizontal displacement to avoid the pull rod 4 pulling the sliding pin 9 and the sliding plates 10 and sliding side plates 11 to move up or down together, so that the square frame cannot be normally gathered or expanded.

[0042] Furthermore, corner blocks 6 are fixedly installed at the four corners of the bottom surface of the fixed plate 5. A cavity 19 is opened on the side wall of each corner block 6 near the sliding rod 7. A sliding frame 12 that can be adjusted to slide back and forth vertically is installed on the inner wall of the cavity 19. A slide plate 22 is slidably installed in the sliding frame 12. The slide plate 22 is rotatably connected to the inner wall of the cavity 19 through a rotating rod 16. A fixing rod 17 is fixedly installed on the side wall of the slide plate 22, and a fastening block 8 is fixedly connected to the end of the fixing rod 17.

[0043] According to the above embodiment, when the external driving structure drives the sliding frame 12 to slide back and forth vertically in the cavity 19, the specific Figure 5 When the sliding frame 12 slides upward or downward, the horizontal length of the rotating rod 16 is reduced due to the deflection of the rotating rod 16, which will pull the slide plate 22 to retract into the cavity 19, so that the fixing rod 17 and the fastening block 8 can move upward or downward together with the centrifugal force outward. When the sliding frame 12 moves and the rotating rod 16 is in a horizontal state, the horizontal length of the rotating rod 16 is at its maximum, that is, the distance between the slide plate 22 and the packaging box is the shortest, so that the fixing rod 17 and the fastening block 8 move toward the packaging box together, and the four fastening blocks 8 push and tighten the four corners of the packaging box at the same time, avoiding the packaging boxes being squeezed and diffused by their own elastic force after the positioning assembly cancels the clamping of the packaging box when the packaging boxes are stacked, resulting in unstable stacks.

[0044] In this way, when the package box falls to the top surface of the pallet or the stack, as the sliding ring 3 moves downward, driving the two sets of sliding plates 10 and the sliding side plates 11 to expand outward, the external driving structure drives the sliding frame 12 to slide along the cavity 19, so that the rotating rod 16 is in a horizontal state, and the fixing rod 17 and the fastening block 8 are pushed out together to perform secondary positioning of the package box, so that the positioning center of the package box coincides with the center of the pallet or is aligned with the positioning center of other stacking layers, thereby improving the positioning accuracy of the stack during stacking, and then the sliding frame 12 continues to slide down, so that the fastening block 8 is out of contact with the package box, and the robot arm 1 is lifted to complete the stacking of the stack layer, and then the sliding frame 12 is slid up and reset to continue stacking the next stack layer.

[0045] It is worth mentioning that since the fastening block 8 moves horizontally and vertically at the same time, when the sliding frame 12 slides down and the fastening block 8 contacts the packaging box, it will provide downward pressure and horizontal thrust on the side wall of the packaging box, which can prevent the packaging box from losing stability due to its own elasticity when subjected to horizontal thrust, thereby ensuring the positioning and docking accuracy of the packaging box stacking layer.

[0046] Furthermore, a spatial positioning device 18 is provided on the bottom surface of the fastening block 8 .

[0047] Furthermore, a connecting rod 13 is rotatably connected between the sliding pin 9 and the sliding frame 12 , and a rotating groove 20 for the connecting rod 13 to rotate is formed on the top surface of the fixed plate 5 .

[0048] According to the above embodiment, a specific embodiment of driving the sliding frame 12 to slide back and forth vertically is provided. Since the vertical reciprocating adjustment of the sliding frame 12 is in a synchronous state with the horizontal sliding adjustment of the sliding pin 9, that is, when the sliding ring 3 drives the sliding pin 9 to move toward the fixed sleeve rod 2 through the pull rod 4, the sliding pin 9 pulls the sliding frame 12 to slide upward along the cavity 19 through the connecting rod 13, that is, the fastening block 8 can perform centrifugal movement while moving upward. When the two sets of sliding plates 10 and the sliding side plates 11 approach each other to complete the positioning and clamping of the packaging box, the centrifugal horizontal displacement of the fastening block 8 reaches the maximum at this time, that is, the spatial positioning device 18 on the bottom surface of the fastening block 8 should correspond to the four corners of the stacking tray. For details, see Figure 9 In the figure, point a is the four corners of the stack tray, and point b is the four corners of the stack body. At this time, the fastening block 8 is centrifugal outward to make the spatial positioning device 18 correspond to point b, and the stack layer can be docked and positioned by center positioning plus four-corner positioning, so that the stack layer can land on the given position of the stack tray. When the sliding ring 3 drives the sliding pin 9 away from the fixed sleeve rod 2 through the pull rod 4, the sliding pin 9 pulls the sliding frame 12 to slide downward along the cavity 19 through the connecting rod 13. When the rotating rod 16 is in a horizontal state, the fastening block 8 gathers toward the four corners of the packaging box to the packaging box. The boxes are fitted together. At this time, the spatial positioning device 18 on the bottom of the fastening block 8 should correspond to the four corners of the stack (point a in the figure), that is, the packaging box is positioned for the second time, and at the same time, it is detected whether the stack below is affected by the stack layer and diffuses, etc., to ensure the overall stability of the stack and the consistency of the center of gravity position. Then the sliding frame 12 continues to slide down, so that the fastening block 8 and the square frame are at the farthest distance from the packaging box, and the robot arm 1 can be driven to rise, and the above steps are repeated after resetting until the stacking of the stack is completed.

[0049] In this way, by driving the fastening blocks 8 closer to each other during the outward expansion of the sliding plate 10 and the sliding side plate 11, the packaging box is re-positioned and then the clamping of the packaging box is released. At the same time, the spatial positioning device 18 is used to perform depth docking and positioning of the stacking tray and the stack body respectively, thereby further improving the positioning accuracy when the stack layer and the stack body are docked, thereby optimizing the center of gravity position distribution of the stack body and the stability of the stack body.

[0050] Furthermore, a pin hole is opened on the inner wall of the cavity 19, and a sliding pin 21 is slidably installed in the pin hole. A spring is provided between the side wall of the sliding pin 21 and the inner wall of the pin hole, and a circular groove for inserting the sliding pin 21 is opened at the center line of the outer wall of the rotating rod 16.

[0051] According to the above embodiment, since the spatial positioning device 18 needs to position the four corners of the stack body when the rotating rod 16 is in a horizontal state, the rotating rod 16 needs to maintain a horizontal state when subjected to the reaction force of the packaging box. By providing a sliding pin 21 in the pin hole opened in the inner wall of the cavity 19, and inserting the sliding pin 21 into the circular groove opened at the center line of the outer wall of the rotating rod 16 and capable of being inserted into the sliding pin 21, a certain horizontal direction restriction can be provided to the rotating rod 16, thereby preventing the rotating rod 16 from rotating in a certain direction after being subjected to force, so that the remaining fastening blocks 8 push the stack body in a single direction, thereby affecting the stability of the stack body.

[0052] Furthermore, the fixing rod 17 is configured as an elastic telescopic rod, and the inner wall of the fastening block 8 is configured as an elastic layer.

[0053] According to the above embodiment, by setting the fixing rod 17 as an elastic telescopic rod and setting the inner wall of the fastening block 8 as an elastic layer, the rigid contact of the fastening block 8 on the packaging box is converted into flexible pressure, thereby avoiding damage to the packaging box due to insufficient specification accuracy of the packaging box itself.

[0054] Furthermore, the bottom end of the corner block 6 is lower than the bottom end of the packaging box.

[0055] According to the above embodiment, since the bottom end of the corner block 6 is lower than the bottom end of the packaging box, it is convenient for the device to grab the packaging box located on the conveyor or other positions, thereby improving the applicability of the device.

[0056] Furthermore, the height of the sliding plate 10 and the sliding side plate 11 is half of the height of the packaging box, and the bottom ends of both are provided with mounting grooves for the extension plate to be embedded.

[0057] According to the above embodiment, the height of the sliding plate 10 and the sliding side plate 11 is half the height of the packaging box. While ensuring that the sliding plate 10 and the sliding side plate 11 have sufficient friction on the packaging box, it is further convenient for the device to grab the packaging box located on the conveying device or other positions, and the bottom ends of the sliding plate 10 and the sliding side plate 11 are provided with installation grooves for the extension plate to be embedded, so that the device can adapt to packaging boxes of different specifications, avoiding the sliding plate 10 and the sliding side plate 11 being insufficient in width to grab packaging boxes that are too high.

[0058] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and drawings can also be directly processed according to existing technical common sense without any doubt. At the same time, the connection method of each component adopts the mature conventional means in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so no specific description will be given here.

[0059] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic palletizing device for packaging boxes for the production of plastic junction boxes, comprising a robotic arm (1), characterized in that: The end of the robotic arm (1) is fixedly connected to a fixed sleeve rod (2), the bottom end of the fixed sleeve rod (2) is fixedly connected to a fixed plate (5), and a positioning assembly is installed on the bottom surface of the fixed plate (5), and the positioning assembly is formed by two groups of mutually perpendicular sliding plates (10) and sliding side plates (11) connected end to end to form a square frame, and every two adjacent sliding plates (10) and sliding side plates (11) are slidably connected through a connecting portion, and the sliding plates (10) and sliding side plates (11) can be slidably adjusted along the bottom surface of the fixed plate (5); it also includes a driving assembly, which is used to drive the two groups of opposite sliding plates (10) and sliding side plates (11) to synchronously approach or move away from each other; The driving assembly comprises a sliding rod (7) which is installed in a fixed sleeve rod (2) and can be slidably adjusted. A sliding ring (3) is slidably installed on the outer wall of the fixed sleeve rod (2). A spline groove is provided on the outer wall of the fixed sleeve rod (2). The inner wall of the sliding ring (3) is fixedly connected to the outer wall of the fixed sleeve rod (2) via a connecting block which is slidably installed in the spline groove. A pull rod (4) is rotatably connected between the sliding ring (3) and each connecting part, and a square groove for the pull rod (4) to pass through is provided on the fixed plate (5). The connecting portion includes a cross slide (14) provided on both sides of the sliding plate (10), and protrusions capable of being vertically inserted into the cross slide (14) are provided on both sides of the sliding side plate (11), and a straight through groove (15) is provided on the protrusion, and a sliding pin (9) located in the straight through groove (15) is slidably installed on the bottom surface of the cross slide (14), and the sliding pin (9) is rotatably connected to one end of the pull rod (4); Corner blocks (6) are fixedly installed at the four corners of the bottom surface of the fixed plate (5), and a cavity (19) is opened on the side wall of each corner block (6) close to the sliding rod (7). A sliding frame (12) capable of vertical reciprocating sliding adjustment is installed on the inner side wall of the cavity (19), and a slide plate (22) is slidably installed in the sliding frame (12). The slide plate (22) is rotatably connected to the inner side wall of the cavity (19) through a rotating rod (16). A fixing rod (17) is fixedly installed on the side wall of the slide plate (22), and a fastening block (8) is fixedly connected to the end of the fixing rod (17); A connecting rod (13) is rotatably connected between the sliding pin (9) and the sliding frame (12), and a rotating groove (20) for the connecting rod (13) to rotate is provided on the top surface of the fixing plate (5).

2. The automatic palletizing equipment for packaging boxes for plastic junction box production according to claim 1 is characterized in that: The bottom surfaces of the fastening blocks (8) are each provided with a spatial positioning device (18).

3. The automatic palletizing equipment for packaging boxes for plastic junction box production according to claim 2 is characterized in that: A pin hole is provided on the inner wall of the cavity (19), a sliding pin (21) is slidably installed in the pin hole, a spring is provided between the side wall of the sliding pin (21) and the inner wall of the pin hole, and a circular groove for inserting the sliding pin (21) is provided at the center line of the outer wall of the rotating rod (16).

4. The automatic palletizing equipment for packaging boxes for plastic junction box production according to claim 3 is characterized by: The fixing rod (17) is configured as an elastic telescopic rod, and the inner wall of the fastening block (8) is configured as an elastic layer.

5. The automatic palletizing equipment for packaging boxes for plastic junction box production according to claim 4 is characterized in that: The bottom end of the corner block (6) is lower than the bottom end of the packaging box.

6. The automatic palletizing equipment for packaging boxes for plastic junction box production according to any one of claims 1 to 5, characterized in that: The height of the sliding plate (10) and the sliding side plate (11) is half the height of the packaging box, and the bottom ends of both are provided with installation grooves for the extension plate to be embedded.

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