An automated production device and process for skeleton boxes

Abstract

The present invention relates to an automatic production device and production process for a skeleton box, and belongs to the technical field of skeleton box production. It includes a die-cutting table with a die-cutting groove, the die-cutting table is fixed on a lower supporting device, and a stamping device is provided above the die-cutting table. A through hole is provided in the center of the die-cutting groove, and the through hole corresponds to the bottom surface of the skeleton box. A grabbing table is slidably provided inside the through hole. A first inclined surface and a second inclined surface are provided around the through hole, respectively. A third inclined surface is provided on both sides of the second inclined surface. The top high points of the first inclined surface, the second inclined surface and the third inclined surface are all lower than the upper opening of the die-cutting groove. The first inclined surface is arranged corresponding to the second side surface of the skeleton box, the second inclined surface is arranged corresponding to the first side surface of the skeleton box, and the third inclined surface corresponds to the connecting part of the skeleton box. The present invention completes the stamping and preforming of the skeleton box through one process, improves the automation degree of the entire production line, improves production efficiency, and reduces equipment procurement costs and labor costs.

Description

Technical Field

[0001] The invention belongs to the technical field of skeleton box production, and specifically relates to an automatic production device and production process for a skeleton box. Background Art

[0002] A skeleton box is a container with an open top. It is mostly used to store parts of different specifications in enterprises and is used in large quantities. In order to reduce costs and weight, skeleton boxes are basically made of plastic materials. Currently, skeleton boxes are mostly produced by die-casting. If large-scale production is to be achieved, enterprises must install more die-casting machines, which increases equipment procurement costs and future maintenance costs. In order to solve this problem, this year, many companies have adopted the method of die-cutting plastic plates into the shape of a skeleton box after it is unfolded, and then manually folded them to form a three-dimensional skeleton box, which improves the production efficiency of the skeleton box and reduces the equipment procurement cost.

[0003] This die-cutting model still has a big problem. The die-cutting speed is fast and efficient, but it needs to be folded manually after die-cutting, and the speed of manual folding is much slower than the speed of die-cutting. In order to cooperate with the die-cutting machine, it is necessary to increase manpower, which increases the labor cost of the enterprise; in order to cooperate with the speed of manual folding, the die-cutting machine needs to change the power on and off state frequently. When it is turned on, it consumes the most energy, consumes extra energy, and is easy to cause equipment damage. Summary of the invention

[0004] The technical problem to be solved by the present invention is: to overcome the shortcomings of the prior art and provide an automatic production device and production process for a skeleton box. The present invention completes the stamping and preforming of the skeleton box in one process, thereby improving the degree of automation of the entire production line, improving production efficiency, and reducing equipment procurement costs and labor costs.

[0005] The technical solution adopted by the present invention to solve the problems existing in the prior art is:

[0006] The invention discloses an automatic production device for a skeleton box, comprising a die-cutting table with a die-cutting groove, wherein the die-cutting table is fixed on a lower supporting device, and a punching device is arranged above the die-cutting table.

[0007] The shape of the open upper end of the die-cutting groove is the same as the shape of the skeleton box after being laid flat. A through hole is provided in the center of the die-cutting groove, and the through hole corresponds to the bottom surface of the skeleton box. A grabbing platform is provided inside the through hole for sliding up and down. Two oppositely arranged first inclined surfaces and two oppositely arranged second inclined surfaces are respectively provided around the through hole, and third inclined surfaces are provided on both sides of the second inclined surfaces. The top high points of the first inclined surface, the second inclined surface and the third inclined surface are all lower than the upper opening of the die-cutting groove.

[0008] The first inclined surface is arranged corresponding to the second side surface of the frame box, the second inclined surface is arranged corresponding to the first side surface of the frame box, and the third inclined surface corresponds to the connecting portion of the frame box.

[0009] Preferably, the die-cutting groove is provided with four cutting blades, and the cutting blades cut between the connecting portion of the skeleton box and the second side surface.

[0010] Preferably, a side of the second inclined surface away from the middle of the die-cutting groove is connected to a horizontally arranged support platform, and an impact hole is provided on the support platform, and the impact hole corresponds to the carrying hole of the skeleton box.

[0011] Preferably, the punching device comprises a punching plate, on which a punching block and a pressure strip which slide up and down are provided, the punching block is arranged corresponding to the impact hole, and the pressure strip is arranged corresponding to the folding line of the skeleton box.

[0012] Preferably, a first oil cylinder, a second oil cylinder and a third oil cylinder are provided above the stamping plate.

[0013] A first limiting ring is provided inside the first oil cylinder, a first piston is slidably provided below the first limiting ring, the first piston is connected to a first pressure rod, the end of the first pressure rod is passed through the outside of the first oil cylinder, and the end of the first pressure rod controls the pressure bar to move up and down through the second guide rod.

[0014] A second limiting ring is provided inside the second oil cylinder, a second piston is slidably provided below the second limiting ring, the second piston is connected to a second pressure rod, the end of the second pressure rod is passed through the outside of the second oil cylinder, and the second pressure rod controls the punching block to move up and down through the first guide rod.

[0015] A second limiting ring is provided inside the second oil cylinder, a second piston is slidably provided below the second limiting ring, the second piston is connected to a second pressure rod, the end of the second pressure rod is passed through the outside of the second oil cylinder, and the second pressure rod controls the punching block to move up and down through the first guide rod.

[0016] A third piston is slidably arranged inside the third oil cylinder, the third piston is connected to a third pressure rod, the end of the third pressure rod is passed through the outside of the third oil cylinder, and the end of the third pressure rod controls the up and down movement of the stamping plate.

[0017] Two bypass oil holes are arranged on the inner wall of the third oil cylinder, and the bypass oil holes are connected with the inlet and outlet oil holes at the top of the first oil cylinder and the second oil cylinder through oil pipes.

[0018] When the third piston moves down to below the bypass oil hole, the stamping plate moves to the inside of the die-cutting groove, and the bottom surface of the second side plate area abuts against the support platform to complete the cutting of the plastic plate. The hydraulic oil flows into the first oil cylinder and the second oil cylinder through the bypass oil hole and the oil pipe, pushing the pressure strip and the punching block to move downward. The pressure strip presses a folding line on the die-cut plastic plate, and the punching block is inserted into the impact hole to cut a handle hole on the die-cut plastic plate.

[0019] Preferably, two connecting plates symmetrically arranged around the center of the stamping plate are connected above the pressure strip, an elastic member is provided between the bottom surface of the connecting plate and the stamping plate, the connecting plate is connected to the second guide rod, and a second spring is provided between the bottom surface of the first guide rod and the stamping plate.

[0020] Preferably, a pressure plate is provided on the outside of each side of the stamping plate, a support rod is protruding above the pressure plate, a first spring is sleeved on the support rod, a spring seat is fixed on the stamping plate, the support rod is slidably connected to the spring seat, and the first spring is located between the spring seat and the pressure plate.

[0021] Preferably, the grabbing platform is provided with a cavity inside and a plurality of through holes on the top surface, each of which is connected to the cavity. A connecting pipe is provided at the bottom of the grabbing platform and is connected to the cavity. An air pipe is connected to the outside of the connecting pipe. The bottom of the connecting pipe is connected to the telescopic rod of the first telescopic device, and the first telescopic device is fixedly connected to the lower supporting device.

[0022] Preferably, a blanking plate is provided below the die-cutting table, the distance between the blanking plate and the die-cutting table is greater than the height of the skeleton box, a center hole is provided on the blanking plate, the center hole is located directly below the grabbing table, and has the same shape and size as the grabbing table.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) Direct pull-down forming after die-cutting reduces the manual folding process, improves production efficiency and reduces labor costs.

[0025] (2) Before die-cutting, the plastic sheet is pressed by a pressing plate to ensure that no flash is produced during die-cutting, thus ensuring the beauty and yield of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 This is the first structural diagram of an automatic production device for skeleton boxes of the present invention.

[0028] Figure 2 This is the second structural diagram of an automatic production device for skeleton boxes of the present invention.

[0029] Figure 3This is the third structural diagram of an automatic production device for skeleton boxes of the present invention.

[0030] Figure 4 This is the fourth structural diagram of an automatic production device for skeleton boxes of the present invention.

[0031] Figure 5 This is a structural diagram of a stamping assembly in an automatic production device for a skeleton box of the present invention.

[0032] Figure 6 This is a structural diagram of the middle die-cutting table of an automatic production device for skeleton boxes of the present invention.

[0033] Figure 7 for Figure 6 The first cross-sectional view of

[0034] Figure 8 for Figure 6 The second cross-sectional view of

[0035] Fig. 9 This is a structural diagram of the middle punching device of a skeleton box automatic production device of the present invention

[0036] Fig.10 for Fig. 9 The bottom diagram of

[0037] Fig.11 is a cross-sectional view of a stamping plate in an automatic production device for a skeleton box of the present invention,

[0038] Fig.12 for Figure 8 A cross-sectional view of

[0039] Fig.13 for Fig.12 A partial enlarged view of the middle A.

[0040] Fig.14 This is a structural diagram of a pull-down device in an automatic production device for skeleton boxes of the present invention.

[0041] Fig.15 This is a structural diagram of a material unloading device in an automatic production device for skeleton boxes of the present invention.

[0042] Fig.16 This is a structural diagram of the skeleton box in a plane state in the present invention.

[0043] Fig.17 This is a structural diagram of the folded skeleton box of the present invention.

[0044] Fig.18 This is a structural diagram of an automatic skeleton box production device of the present invention when the skeleton box is moved out after being formed.

[0045] In the figure: 1-die cutting table, 101-die cutting groove, 102-cutting piece, 103-first inclined surface, 104-support table, 105-impact hole, 106-second inclined surface, 107-third inclined surface, 2-grabbing table, 201-through hole, 3-connecting pipe, 4-trachea, 5-telescopic rod, 6-first telescopic device, 7-stamping plate, 701-bottom surface area, 702-first side plate area, 703-second side plate area, 8-pressing plate, 801-support rod, 9-first spring, 10-spring seat, 11-punching block, 12-pressing strip, 1201-connecting plate, 13-elastic member, 14-first guide rod, 15-second spring, 16-second guide rod, 17-first oil cylinder, 1701-first limiting ring, 18-first pressure rod, 1801-first piston, 19-second oil cylinder, 1901-second limiting Position ring, 20-second pressure rod, 2001-second piston, 21-third oil cylinder, 2101-bypass oil hole, 2102-oil pipe, 22-third pressure rod, 2201-third piston, 23-unloading plate, 2301-center hole, 2302-inclined surface, 24-push plate, 25-second telescopic device, 26-upper connecting frame, 27-lower supporting device, 28-bottom surface, 29-first side surface, 30-connecting part, 31-handle hole, 32-second side surface, 33-folding line. DETAILED DESCRIPTION

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the technical field of the present application. The terms used herein are only for the purpose of describing specific implementation methods and are not intended to limit the present application embodiments.

[0047] In addition, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used in the specification and claims of the present invention to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the drawings. Therefore, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0048] The following is a further detailed description of an automatic production device and production process of a skeleton box of the present invention in conjunction with the accompanying drawings.

[0049] A skeleton box automatic production device, comprising Figures 1 to 18 As shown, it includes a die-cutting table 1 with a die-cutting groove 101. The die-cutting table 1 is fixed on a lower supporting device 27. A punching device is provided above the die-cutting table 1.

[0050] The shape of the upper opening of the die-cut groove 101 is similar to Fig.18 The shape of the middle frame box after being laid flat is the same, a through hole is provided in the center of the die-cutting slot 101, the through hole corresponds to the bottom surface 28 of the frame box, a grabbing platform 2 is provided inside the through hole for sliding up and down, and the grabbing platform 2 grabs the bottom surface 28 of the frame box. Two first inclined surfaces 103 and two second inclined surfaces 106 arranged oppositely are respectively provided around the through hole, and third inclined surfaces 107 are provided on both sides of the second inclined surface 106, and the top high points of the first inclined surface 103, the second inclined surface 106 and the third inclined surface 107 are all lower than the upper opening of the die-cutting slot 101.

[0051] The first inclined surface 103 is arranged corresponding to the second side surface 32 of the skeleton box, the second inclined surface is arranged corresponding to the first side surface 29 of the skeleton box, and the third inclined surface 107 corresponds to the connecting portion 30 of the skeleton box.

[0052] Since there is a carrying hole 31 on the skeleton box, in order to cut out the carrying hole 31, in this embodiment, the second inclined surface 106 is connected to a horizontally arranged support platform 104 on the side away from the middle of the die-cutting groove 101, and the support platform 104 is provided with an impact hole 105, and the impact hole 105 corresponds to the carrying hole 31 of the skeleton box.

[0053] During the folding process of the frame box, the connection part 30 is rotated 90° with the first side surface 29 so that the connection part 30 is parallel to the second side surface 32, and the two are fixedly connected by gluing or staples. Therefore, after the plastic plate is die-cut, the connection part 30 is disconnected from the second side surface 32. In order to achieve the disconnection between the two, the die-cutting groove 101 is provided with four cutting blades 102, which cut the connection part 30 and the second side surface 32 of the frame box.

[0054] In this embodiment, the grabbing platform 2 is formed by sucking the bottom surface 28 of the frame box by negative pressure, and then moving it downward. The grabbing platform 2 is provided with a cavity inside, and a plurality of through holes 201 are provided on the top surface, each of which is connected to the cavity. The bottom of the grabbing platform 2 is provided with a connecting pipe 3 connected to the cavity, and the outside of the connecting pipe 3 is connected to the air pipe 4. The lower part of the connecting pipe 3 is connected to the telescopic rod 5 of the first telescopic device 6, and the first telescopic device 6 is fixedly connected to the lower support device 27.

[0055] The punching device comprises a punching plate 7, on which a punching block 11 and a pressure strip 12 which slide up and down are provided. The punching block 11 is arranged corresponding to the impact hole 105, and the pressure strip 12 is arranged corresponding to the folding line 33 of the skeleton box.

[0056] The pressure strip 12 divides the stamping plate 7 into a bottom surface area 701 , a first side panel area 702 and a second side panel area 703 , which respectively correspond to the bottom surface 28 , the second side surface 32 , the first side surface 29 and the connecting portion 30 of the skeleton box.

[0057] A first oil cylinder 17 , a second oil cylinder 19 and a third oil cylinder 21 are disposed above the stamping plate 7 .

[0058] The first oil cylinder 17 is provided with a first limiting ring 1701 inside, and a first piston 1801 is slidably provided below the first limiting ring 1701. The first piston 1801 is connected to a first pressure rod 18, and the end of the first pressure rod 18 is passed through the outside of the first oil cylinder 17. The end of the first pressure rod 18 controls the pressure bar 12 to move up and down through the second guide rod 16.

[0059] The second oil cylinder 19 is provided with a second limiting ring 1901 inside, and a second piston 2001 is slidably provided below the second limiting ring 1901. The second piston 2001 is connected to a second pressure rod 20, and the end of the second pressure rod 20 is passed through the outside of the second oil cylinder 19. The second pressure rod 20 controls the punching block 11 to move up and down through the first guide rod.

[0060] The second oil cylinder 19 is provided with a second limiting ring 1901 inside, and a second piston 2001 is slidably provided below the second limiting ring 1901. The second piston 2001 is connected to a second pressure rod 20, and the end of the second pressure rod 20 is passed through the outside of the second oil cylinder 19. The second pressure rod 20 controls the punching block 11 to move up and down through the first guide rod.

[0061] A third piston 2201 is slidably disposed inside the third oil cylinder 21 , and the third piston 2201 is connected to a third pressure rod 22 , and the end of the third pressure rod 22 is passed through the outside of the third oil cylinder 21 , and the end of the third pressure rod 22 controls the stamping plate 7 to move up and down.

[0062] Two bypass oil holes 2101 are provided on the inner wall of the third oil cylinder 21 , and the bypass oil holes 2101 are connected to the inlet and outlet oil holes at the top of the first oil cylinder 17 and the second oil cylinder 19 through oil pipes 2102 .

[0063] When the third piston 2201 moves down to below the bypass oil hole 2101, the punching plate 7 moves to the inside of the die-cutting groove 101, and the bottom surface of the second side plate area 703 abuts against the support platform 104, completing the cutting of the plastic plate. The hydraulic oil flows into the first oil cylinder 17 and the second oil cylinder 19 through the bypass oil hole 2101 and the oil pipe 2102, pushing the pressure strip 12 and the punching block 11 to move down, and the pressure strip 12 presses out a folding line 33 on the die-cut plastic plate, and the punching block 11 is inserted into the impact hole 105, cutting a hand hole 31 on the die-cut plastic plate.

[0064] The first oil cylinder 17 and the second oil cylinder 19 are fixedly connected to the punching plate 7, and the third oil cylinder 21 is fixedly connected to the lower support device through the upper connecting frame 26. A tension spring is arranged between the punching plate 7 and the upper connecting frame 26, and the punching plate 7 and the die cutting table 1 are arranged at intervals under the action of the tension spring.

[0065] The oil inlet and outlet ports at the top of the third oil cylinder 21 are connected to the hydraulic station through pipelines. Two connecting plates 1201 symmetrically arranged around the center of the stamping plate 7 are connected above the pressure strip 12. An elastic member 13 is provided between the bottom surface of the connecting plate 1201 and the stamping plate 7. The connecting plate 1201 is connected to the second guide rod 16. A second spring 15 is provided between the bottom surface of the first guide rod 14 and the stamping plate 7.

[0066] The stamping plate 7 is provided with a position switch, which is used to detect the height of the first guide rod 14 and the second guide rod 16. The bottom of the third oil cylinder 21 is provided with a self-locking switch, which can lock the third pressure rod 22. The third pressure rod 22 is provided with a slot, and the self-locking switch is an electromagnet. The telescopic rod at the front end of the electromagnet is always in contact with the outer wall of the third pressure rod 22. When the third pressure rod 22 moves down to its position, the telescopic rod is inserted into the slot to lock the third pressure rod 22. The position switch controls the working state of the self-locking switch through the control module.

[0067] The hydraulic oil is pumped into the third oil cylinder 21, pushing the third piston 2201 downward, and then pushing the punching plate 7 downward, moving to the die-cutting groove 101, and die-cutting the plastic plate. After the third piston 2201 moves to the bottom, the die-cutting of the plastic plate is completed, and the bypass oil hole 2101 is exposed. The hydraulic oil flows into the first oil cylinder 17 and the second oil cylinder 19 through the bypass oil hole 2101, pushing the first piston 1801 and the second piston 2001 downward, and by controlling the stroke of the first piston 1801 and the second piston 2001, the downward movement of the pressure strip 12 and the punching block 11 is controlled, and the folding line 33 and the hand-held hole 31 are formed on the plastic plate.

[0068] After the die-cutting of the skeleton box sheet is completed, the hydraulic station releases pressure, and under the action of the elastic member 13, the pressure bar 12 moves up, and the hydraulic oil in the first oil cylinder 17 flows back to the third oil cylinder 21; under the action of the second spring 15, the punching block 11 moves up, and the hydraulic oil in the second oil cylinder 19 flows back to the third oil cylinder 21. After both limit switches detect the reset signal of the first guide rod 14 and the second guide rod 16, the controller controls the self-locking switch to unlock, and under the action of the tension spring, the third pressure rod 22 moves back and resets, and the hydraulic oil in the third oil cylinder 21 is discharged, completing a die-cutting stroke.

[0069] In the process of die-cutting the plastic plate, in order to prevent the plastic plate from collapsing and burrs, a pressing plate 8 is provided on the outside of the stamping plate 7 on both sides, a support rod 801 is protruding above the pressing plate 8, and a first spring 9 is sleeved on the support rod 801. A spring seat 10 is fixed on the stamping plate 7, and the support rod 801 is slidably connected with the spring seat 10. The first spring 9 is located between the spring seat 10 and the pressing plate 8. In the initial state, the bottom surface of the pressing plate 8 is lower than the stamping plate 7. During die-cutting, it contacts the plastic plate first and presses the plastic plate onto the die-cutting table 1.

[0070] A blanking plate 23 is provided below the die-cutting table 1 . The distance between the blanking plate 23 and the die-cutting table 1 is greater than the height of the skeleton box. A center hole 2301 is provided on the blanking plate 23 . The center hole 2301 is located directly below the grabbing table 2 , and has the same shape and size as the grabbing table 2 .

[0071] One end of the blanking plate 23 is provided with an inclined surface 2302 arranged downwardly, and the blanking plate 23 is provided with a push plate 24 on the side away from the inclined surface 2302. The side of the push plate 24 away from the blanking plate 23 is connected with a second telescopic device 25, and the second telescopic device 25 is fixedly connected to the lower support device 27. The first telescopic device 6 and the second telescopic device 25 are cylinders or hydraulic cylinders.

[0072] The skeleton box production process based on the skeleton box automatic production device includes the following steps:

[0073] S1, the plastic sheet is moved to the die-cutting table via a conveyor belt, and the plastic sheet covers the die-cutting groove 101;

[0074] S2, hydraulic oil is pumped into the third oil cylinder 21, pushing the third piston 2201 downward, and then pushing the stamping plate 7 downward, moving to the inside of the die-cutting groove 101, and die-cutting the plastic plate. After the third piston 2201 moves to the bottom, the die-cutting of the plastic plate is completed, and the bypass oil hole 2101 is exposed. The hydraulic oil flows into the first oil cylinder 17 and the second oil cylinder 19 through the bypass oil hole 2101, pushing the first piston 1801 and the second piston 2001 downward, and by controlling the stroke of the first piston 1801 and the second piston 2001, the downward movement of the pressure strip 12 and the punching block 11 is controlled to form a folding line 33 and a hand-held hole 31 on the plastic plate;

[0075] S3, after the die-cutting of the skeleton box sheet is completed, the hydraulic station releases pressure, and under the action of the elastic member 13, the pressure strip 12 moves up, and the hydraulic oil in the first oil cylinder 17 flows back to the inside of the third oil cylinder 21; under the action of the second spring 15, the punching block 11 moves up, and the hydraulic oil in the second oil cylinder 19 flows back to the inside of the third oil cylinder 21;

[0076] S4, after both limit switches detect the reset signals of the first guide rod 14 and the second guide rod 16, the controller controls the self-locking switch to unlock, and under the action of the tension spring, the third pressure rod 22 moves back and resets, and the hydraulic oil in the third oil cylinder 21 is discharged, completing a die-cutting stroke;

[0077] S5. After the punching plate 7 is lifted, the grabbing platform 2 is evacuated, and the suction force generated by the through hole 201 adsorbs the bottom surface 28. The first telescopic device 6 drives the grabbing platform 2 to move downward. During the downward movement of the grabbing platform 2, the first inclined surface 103 guides the second side surface 32 to flip the second side surface 32 to a vertical state, the second inclined surface 106 guides the first side surface 29 to flip the first side surface 29 to a vertical state, and the third inclined surface 107 guides the connecting portion 30 to flip and insert it outside the second side surface 32 and be arranged parallel to it.

[0078] S6, the grabbing platform 2 moves down to the center hole 2301 of the blanking plate 23, and its top surface is flush with the top surface of the blanking plate 23, the skeleton box is folded into shape, and the second telescopic device 25 controls the push plate 24 to move forward, pushing the skeleton box onto the inclined surface 2302, and then sliding down onto the conveyor belt;

[0079] S7. The operator staples the connecting portion 30 and the second side surface 32 together.

[0080] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A skeleton box automatic production device, characterized by: It comprises a die-cutting table (1) with a die-cutting groove (101), the die-cutting table (1) is fixed on a lower support device (27), and a punching device is provided above the die-cutting table (1). The shape of the upper open end of the die-cutting groove (101) is the same as the shape of the skeleton box after being laid flat. A through hole is provided in the center of the die-cutting groove (101), and the through hole corresponds to the bottom surface (28) of the skeleton box. A grabbing platform (2) is provided inside the through hole for sliding up and down. Two first inclined surfaces (103) and two second inclined surfaces (106) arranged opposite to each other are provided around the through hole. Third inclined surfaces (107) are provided on both sides of the second inclined surfaces (106). The top high points of the first inclined surfaces (103), the second inclined surfaces (106) and the third inclined surfaces (107) are all lower than the upper opening of the die-cutting groove (101). The first inclined surface (103) is arranged corresponding to the second side surface (32) of the skeleton box, the second inclined surface is arranged corresponding to the first side surface (29) of the skeleton box, and the third inclined surface (107) corresponds to the connecting portion (30) of the skeleton box. A side of the second inclined surface (106) away from the middle of the die-cutting groove (101) is connected to a horizontally arranged support platform (104), and an impact hole (105) is provided on the support platform (104), and the impact hole (105) corresponds to the hand-carrying hole (31) of the skeleton box. The punching device comprises a punching plate (7), on which a punching block (11) and a pressure strip (12) which slide up and down are provided, wherein the punching block (11) is arranged corresponding to the impact hole (105), and the pressure strip (12) is arranged corresponding to the folding line (33) of the skeleton box. A first oil cylinder (17), a second oil cylinder (19) and a third oil cylinder (21) are provided above the stamping plate (7). The first oil cylinder (17) is provided with a first limiting ring (1701) inside, a first piston (1801) is slidably provided below the first limiting ring (1701), the first piston (1801) is connected to a first pressure rod (18), the end of the first pressure rod (18) is passed through the outside of the first oil cylinder (17), and the end of the first pressure rod (18) controls the pressure strip (12) to move up and down through the second guide rod (16). The second oil cylinder (19) is provided with a second limiting ring (1901) inside, a second piston (2001) is slidably provided below the second limiting ring (1901), the second piston (2001) is connected to a second pressure rod (20), the end of the second pressure rod (20) is passed through the outside of the second oil cylinder (19), and the second pressure rod (20) controls the punching block (11) to move up and down through the first guide rod. The second oil cylinder (19) is provided with a second limiting ring (1901) inside, a second piston (2001) is slidably provided below the second limiting ring (1901), the second piston (2001) is connected to a second pressure rod (20), the end of the second pressure rod (20) is passed through the outside of the second oil cylinder (19), and the second pressure rod (20) controls the punching block (11) to move up and down through the first guide rod. The third oil cylinder (21) is slidably provided with a third piston (2201) inside, the third piston (2201) is connected to a third pressure rod (22), the end of the third pressure rod (22) is passed through the outside of the third oil cylinder (21), and the end of the third pressure rod (22) controls the stamping plate (7) to move up and down. Two bypass oil holes (2101) are provided on the inner wall of the third oil cylinder (21), and the bypass oil holes (2101) are connected to the oil inlet and outlet holes at the top of the first oil cylinder (17) and the second oil cylinder (19) through oil pipes (2102). When the third piston (2201) moves downward to below the bypass oil hole (2101), the punching plate (7) moves to the inside of the die-cutting groove (101), and the bottom surface of the second side plate area (703) abuts against the support platform (104), completing the cutting of the plastic plate. The hydraulic oil flows into the first oil cylinder (17) and the second oil cylinder (19) through the bypass oil hole (2101) and the oil pipe (2102), pushing the pressure strip (12) and the punching block (11) downward. The pressure strip (12) presses a folding line (33) on the die-cut plastic plate. The punching block (11) is inserted into the impact hole (105), and a handle hole (31) is cut on the die-cut plastic plate.

2. The automatic production device for skeleton boxes according to claim 1 is characterized in that: The die-cutting groove (101) is provided with four cutting pieces (102), and the cutting pieces (102) cut between the connecting portion (30) and the second side surface (32) of the skeleton box.

3. The automatic production device for skeleton boxes according to claim 2 is characterized in that: Two connecting plates (1201) are connected above the pressure strip (12) and are arranged symmetrically around the center of the stamping plate (7). An elastic member (13) is provided between the bottom surface of the connecting plate (1201) and the stamping plate (7). The connecting plate (1201) is connected to the second guide rod (16). A second spring (15) is provided between the bottom surface of the first guide rod (14) and the stamping plate (7).

4. The automatic production device for skeleton boxes according to claim 3 is characterized in that: A pressing plate (8) is provided on the outside of each of the two sides of the stamping plate (7), a support rod (801) is protruding above the pressing plate (8), a first spring (9) is sleeved on the support rod (801), a spring seat (10) is fixed on the stamping plate (7), the support rod (801) is slidably connected to the spring seat (10), and the first spring (9) is located between the spring seat (10) and the pressing plate (8).

5. The automatic production device for skeleton boxes according to claim 4 is characterized in that: The grabbing platform (2) is provided with a cavity inside and a plurality of through holes (201) on the top surface, each of which is connected to the cavity. The grabbing platform (2) is provided with a connecting pipe (3) on the bottom, which is connected to the cavity. The connecting pipe (3) is connected to the outside with an air pipe (4). The bottom of the connecting pipe (3) is connected to the telescopic rod (5) of the first telescopic device (6). The first telescopic device (6) is fixedly connected to the lower support device (27).

6. The automatic production device for skeleton boxes according to claim 5 is characterized in that: A blanking plate (23) is provided below the die-cutting table (1), the distance between the blanking plate (23) and the die-cutting table (1) being greater than the height of the skeleton box, and a center hole (2301) is provided on the blanking plate (23), the center hole (2301) being located directly below the grabbing table (2) and having the same shape and size as the grabbing table (2).

7. The skeleton box production process of the skeleton box automatic production device according to claim 6 is characterized in that: The following steps are involved: S1, the plastic sheet is moved to the die-cutting table (1) via a conveyor belt, and the plastic sheet covers the die-cutting groove (101); S2, hydraulic oil is pumped into the third oil cylinder (21), pushing the third piston (2201) downward, thereby pushing the punching plate (7) downward, moving to the inside of the die-cutting groove (101), and die-cutting the plastic plate. After the third piston (2201) moves to the bottom, the die-cutting of the plastic plate is completed, and the bypass oil hole (2101) is exposed. The hydraulic oil flows into the first oil cylinder (17) and the second oil cylinder (19) through the bypass oil hole (2101), pushing the first piston (1801) and the second piston (2001) downward. By controlling the stroke of the first piston (1801) and the second piston (2001), the downward movement of the pressure strip (12) and the punching block (11) is controlled, and a folding line (33) and a hand-held hole (31) are formed on the plastic plate; S3. After the die-cutting of the skeleton box sheet is completed, the punching plate (7) is lifted, the grabbing table (2) is evacuated, the suction force generated by the through hole (201) adsorbs the bottom surface (28), and the first telescopic device (6) drives the grabbing table (2) to move downward. During the downward movement of the grabbing table (2), the first inclined surface (103) guides the second side surface (32) to flip the second side surface (33) to a vertical state, the second inclined surface (106) guides the first side surface (29) to flip the first side surface (29) to a vertical state, and the third inclined surface (107) guides the connecting portion (30) to flip it and insert it outside the second side surface (32) and arrange it parallel to the second side surface; S4. The operator staples the connecting portion (30) and the second side surface (32) together using staples.

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