Carton opening-free transportation carton opening device with limiting function

Abstract

The invention relates to the field of carton processing equipment, in particular to a carton opening device with a limiting function for carton opening-free transportation, which comprises a supporting clamping seat, aluminum profile columns are arranged at four corners of the upper end surface of the supporting clamping seat, and gear oscillating cylinders are arranged on two side surfaces of the supporting clamping seat. By arranging the limiting device, when carton boxes of different models are locked and punched, a fifth bevel gear can synchronously drive four sets of transmission lead screws to rotate through four sets of fourth bevel gears, so that the four sets of transmission lead screws can synchronously drive four sets of clamping devices to conduct centripetal and centrifugal displacement; and meanwhile, the limiting clamp can be in threaded connection with the threaded rotating shaft through the threaded guide sleeve, the guiding-out distance of the limiting clamp can be adjusted at will, and the adaptability and stability of the equipment for locking the cartons of the different models are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of carton processing equipment, and in particular to a carton hole-opening device for transportation without unpacking and having a limiting function. Background Art

[0002] The carton opening device for free-packing transportation is suitable for opening holes in cartons of various specifications and materials. It is widely used in logistics, warehousing, packaging and other industries.

[0003] As disclosed in publication number: CN217944453U, a punching device for carton production with a limiting function comprises a limiting plate, wherein one side of the limiting plate is fixedly mounted with a mounting plate, one side of the mounting plate is mounted with a guide wheel through a spring, one side of the limiting plate is provided with a slot, one side of the mounting plate is movably connected with a punching mechanism, the punching mechanism comprises a mounting block, the mounting block is slidably connected to the mounting plate, a high-speed motor is mounted inside the mounting block, one end of the high-speed motor passes through the mounting block and is fixedly mounted with a drill bit, the lower end of the mounting block is connected with a handle, the handle is provided with a control switch, and the control switch is electrically connected to the high-speed motor, the device clamps and limits the carton through the guide wheel in cooperation with the limiting plate, the mounting block can be inserted into the mounting plate, and the drill bit can drill holes in the carton limited and fixed between the limiting plate and the mounting plate by plugging and pulling out the handle, which effectively solves the problem of rotation and sliding of the paper shell.

[0004] Although the above-mentioned equipment can perform punching operations on cartons, it is not convenient for the above-mentioned equipment to adaptively lock cartons of different models according to needs, thereby reducing the stability of the equipment when punching cartons. At the same time, the degree of automation of the above-mentioned equipment in loading cartons is also insufficient. Therefore, a carton punching device for transportation without unpacking and having a limiting function is needed to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a carton hole-opening device for transportation without unpacking the carton with a limiting function, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a carton opening device for non-unpacking transportation with a limiting function, comprising a support base, wherein the four corners of the upper end surface of the support base are provided with aluminum profile columns, and gear swing cylinders are provided on both sides of the support base, and two groups of alignment rotation seats are fixedly provided at the centers of the inner end surfaces of the two groups of gear swing cylinders, and two groups of alignment rotation grooves are symmetrically opened on the side end surfaces of the support base.

[0007] A limiting device, wherein the limiting device is fixedly connected to the two sets of the alignment rotating seats, and the two sets of the gear swing cylinders drive the limiting device to perform a 180-degree rotation cycle inside the supporting seat;

[0008] A punching device is fixedly arranged on the upper part of the four groups of aluminum profile columns, and a servo motor for power supply is arranged on the upper part of the punching device, and the punching device is used to punch holes in cartons.

[0009] Preferably, the limiting device includes a motor holder, and two sets of locking devices are provided on both side ends of the motor holder. The two opposite locking devices located on the same vertical side are fixedly connected by a fixing column, and the side end faces of the two sets of locking devices are provided with a fixed clamping plate, and a fixed guide seat is fixedly provided at the center of the side end face of the fixed clamping plate. The internal rotation of the two sets of fixed clamping plates is clamped with a transmission clamping shaft, and a first bevel gear is provided at the outer end face of the transmission clamping shaft near the two end heads, and a third bevel gear is provided at the outer end face of the transmission clamping shaft near the middle, the inner end face of the motor holder is fixedly clamped with a reduction motor, and a second bevel gear is provided at the output end of the reduction motor.

[0010] Preferably, the locking device includes a limiting guide seat, a sixth bevel gear is rotatably clamped at the middle part of the inner end surface of the limiting guide seat, and a fifth bevel gear is provided on the upper end surface of the sixth bevel gear, four groups of fourth bevel gears are equidistantly rotatably clamped at the inner end surface of the limiting guide seat near the fifth bevel gear, and a transmission screw is fixedly clamped at the inner end surface of the fourth bevel gear, and the inner end surface of the limiting guide seat is threadedly connected to a clamping device through the transmission screw.

[0011] Preferably, the clamping device includes a threaded slide, a threaded guide sleeve is rotatably clamped at the middle part of the inner end surface of the threaded slide, and a limiting clamp is slidably clamped at the inner end surface of the threaded slide, linear guide shafts are provided on both sides of the rear end surface of the limiting clamp, and a threaded rotating shaft is fixedly provided at the center of the rear end surface of the limiting clamp.

[0012] Preferably, the limiting clamp is adapted to the threaded guide sleeve through the threaded rotating shaft and is then threadedly slidably connected to the inner end surface of the threaded slide, and the threaded slide is threadedly slidably connected to the upper end surface of the limiting guide seat through the transmission screw.

[0013] Preferably, the four groups of fourth bevel gears are all meshedly connected with the fifth bevel gear located in the middle;

[0014] During transmission, the fifth bevel gear located in the middle can synchronously drive the four sets of fourth bevel gears to rotate, so that the four sets of fourth bevel gears can drive the four sets of clamping devices through the transmission screw to lock and limit the different types of cartons, thereby improving the stability of subsequent punching;

[0015] The upper and lower groups of the sixth bevel gears are both meshed and connected with the first bevel gear, and the two groups of the sixth bevel gears rotate synchronously in the opposite direction. The second bevel gear is meshed and connected with the third bevel gear. After punching, the first bevel gear can drive the two groups of the fifth bevel gears to rotate synchronously in the opposite direction through the two groups of the sixth bevel gears. The fifth bevel gear located at the top can drive the clamping device to release the lock of the carton through the fourth bevel gear. Conversely, the fifth bevel gear at the bottom can drive the clamping device to lock the newly loaded carton at the bottom through the fourth bevel gear.

[0016] Preferably, the punching device includes a guide card seat, and the middle and front parts of the inner end surface of the guide card seat are rotatably connected with the first synchronous pulley, and the two groups of the first synchronous pulleys are meshed and connected by the first synchronous belt, and a threaded rotating sleeve is provided inside the first synchronous pulley located in the middle, and the inner end surface of the guide card seat is slidably connected with a positioning slide, and a threaded guide shaft is provided at the center of the upper end surface of the positioning slide, and two groups of motor guide seats are provided at the lower end surface of the positioning slide, and the inner end surface of each group of the motor guide seats is fixedly connected with a stepper motor, and the output ends of the two groups of stepper motors are provided with a hole drilling bit, and the two groups of hole drilling bits can be driven by the stepper motor to synchronously perform hole drilling operations on the two groups of cartons, thereby effectively improving the efficiency of the equipment in punching cartons.

[0017] Preferably, the positioning slide is adapted to the threaded guide shaft through the threaded sleeve and then threadedly slidably connected to the inner end surface of the guide card seat. When the carton is punched, the first synchronous pulley can drive another set of first synchronous pulleys and the threaded sleeve to rotate through the first synchronous belt, so that the threaded sleeve can be threadedly connected to the threaded guide shaft, thereby driving the positioning slide and the two sets of hole-opening drill bits to move downward accurately, facilitating subsequent fast and accurate punching operations, and the hole-opening drill bit and the fifth bevel gear are arranged on the same axis, which can effectively improve the accuracy and stability of the subsequent hole-opening drill bit in punching the outside of the carton.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention provides a limit device. When locking and punching cartons of different models, the fifth bevel gear can synchronously drive the four sets of transmission screws to rotate through the four sets of fourth bevel gears, so that the four sets of transmission screws can synchronously drive the four sets of clamping devices to perform centripetal and centrifugal displacement, thereby locking and limiting cartons of different models. At the same time, the limit clamp can be threadedly connected to the threaded shaft through the threaded guide sleeve, and the lead-out spacing of the limit clamp can be arbitrarily adjusted, thereby effectively improving the adaptability and stability of the equipment in locking cartons of different models.

[0020] 2. The present invention is provided with a punching device and a gear swing cylinder. The two sets of gear swing cylinders can drive the limit device to perform a 180-degree flip operation. At the same time, the first bevel gear can drive the two sets of fifth bevel gears to rotate synchronously in the opposite direction through the two sets of sixth bevel gears, thereby facilitating the four sets of clamping devices located at the top to release the limit of the carton, and also facilitating the four sets of clamping devices at the bottom to lock and load the carton, effectively improving the efficiency and stability of the equipment in automatically guiding the carton. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a disassembled diagram of the main body of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the main body of the present invention;

[0024] Figure 3 Schematic diagram of the structure of the limiting device of the present invention;

[0025] Figure 4 For the present invention Figure 3 A local enlarged view of point I;

[0026] Figure 5 This is an exploded view of the locking device of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the locking device of the present invention;

[0028] Figure 7 is an exploded view of the clamping device of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the clamping device of the present invention;

[0030] Figure 9 This is an exploded view of the punching device of the present invention;

[0031] Figure 10 It is a structural schematic diagram of the punching device of the present invention.

[0032] In the figure: 1-alignment groove, 2-limiting device, 3-servo motor, 4-punching device, 5-aluminum profile column, 6-gear swing cylinder, 7-alignment swivel seat, 8-support card seat, 21-fixed guide seat, 22-locking device, 23-fixed column, 24-motor card seat, 25-transmission card shaft, 26-first bevel gear, 27-second bevel gear, 28-fixed card plate, 29-third bevel gear, 210-reduction motor, 221-transmission screw, 222-clamping device, 2 23-fourth bevel gear, 224-fifth bevel gear, 225-sixth bevel gear, 226-limiting guide seat, 2221-threaded rotating shaft, 2222-linear guide shaft, 2223-limiting fixture, 2224-threaded guide sleeve, 2225-threaded slide, 41-threaded guide shaft, 42-guide clamp, 43-first synchronous pulley, 44-positioning slide, 45-first synchronous belt, 46-hole drill bit, 47-stepping motor, 48-motor guide seat, 49-threaded rotating sleeve. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] The present invention will be further described below with reference to the accompanying drawings.

[0036] Example 1

[0037] See also Figure 1-10The present invention provides an embodiment of a carton opening device for transportation without unpacking, which has a limiting function and includes a support base 8. Aluminum profile columns 5 are provided at the four corners of the upper end surface of the support base 8, and gear swing cylinders 6 are provided on both sides of the support base 8. A positioning rotation base 7 is fixedly provided at the center of the inner end surface of the two sets of gear swing cylinders 6. Two sets of positioning rotation grooves 1 are symmetrically opened on the side end surface of the support base 8.

[0038] The limiting device 2 is fixedly connected to the two sets of aligning swivel seats 7, and the two sets of gear swing cylinders 6 drive the limiting device 2 to perform a 180-degree rotation cycle inside the supporting seat 8;

[0039] The punching device 4 is fixedly arranged on the upper part of the four groups of aluminum profile columns 5, and a servo motor 3 for power supply is arranged on the upper part of the punching device 4. The punching device 4 is used to punch holes in the carton.

[0040] The limiting device 2 includes a motor base 24, and two sets of locking devices 22 are provided on both side ends of the motor base 24. The two sets of opposite locking devices 22 located on the same vertical side are fixedly connected by a fixing column 23, and the side end faces of the two sets of locking devices 22 are provided with a fixed card plate 28, and a fixed guide seat 21 is fixedly provided at the center of the side end face of the fixed card plate 28. The internal rotation of the two sets of fixed card plates 28 is connected with a transmission card shaft 25, and the outer end face of the transmission card shaft 25 is provided with a first bevel gear 26 near the two end heads, and the outer end face of the transmission card shaft 25 is provided with a third bevel gear 29 near the middle part. The inner end face of the motor base 24 is fixedly connected with a reduction motor 210, and a second bevel gear 27 is provided at the output end of the reduction motor 210.

[0041] The locking device 22 includes a limiting guide seat 226, and the sixth bevel gear 225 is rotatably connected to the middle part of the inner end surface of the limiting guide seat 226, and the fifth bevel gear 224 is provided on the upper end surface of the sixth bevel gear 225. Four groups of fourth bevel gears 223 are equidistantly rotatably connected to the inner end surface of the limiting guide seat 226 near the fifth bevel gear 224, and the transmission screw 221 is fixedly connected to the inner end surface of the fourth bevel gear 223. The inner end surface of the limiting guide seat 226 is threadedly connected to the clamping device 222 through the transmission screw 221.

[0042] The clamping device 222 includes a threaded slide 2225, a threaded guide sleeve 2224 is rotatably clamped at the middle of the inner end surface of the threaded slide 2225, and a limiting clamp 2223 is slidably clamped at the inner end surface of the threaded slide 2225, linear guide shafts 2222 are provided on both sides of the rear end surface of the limiting clamp 2223, and a threaded rotating shaft 2221 is fixedly provided at the center of the rear end surface of the limiting clamp 2223.

[0043] The limiting clamp 2223 is adapted to the threaded guide sleeve 2224 through the threaded rotating shaft 2221 and is then threadedly slidably connected to the inner end surface of the threaded slide 2225. The threaded slide 2225 is threadedly slidably connected to the upper end surface of the limiting guide seat 226 through the transmission screw 221.

[0044] The four sets of fourth bevel gears 223 are all meshed with the fifth bevel gear 224 located in the middle;

[0045] During transmission, the fifth bevel gear 224 located in the middle can synchronously drive the four sets of fourth bevel gears 223 to rotate, so that the four sets of fourth bevel gears 223 can drive the four sets of clamping devices 222 through the transmission screw 221 to lock and limit the different types of cartons, thereby improving the stability of subsequent punching;

[0046] The upper and lower groups of sixth bevel gears 225 are both meshed and connected with the first bevel gear 26, and the two groups of sixth bevel gears 225 rotate synchronously in the opposite direction. The second bevel gear 27 is meshed and connected with the third bevel gear 29. After punching, the first bevel gear 26 can drive the two groups of fifth bevel gears 224 to rotate synchronously in the opposite direction through the two groups of sixth bevel gears 225. The fifth bevel gear 224 at the top can drive the clamping device 222 to release the lock of the carton through the fourth bevel gear 223. Conversely, the fifth bevel gear 224 at the bottom can drive the clamping device 222 to lock the newly loaded carton at the bottom through the fourth bevel gear 223.

[0047] The punching device 4 includes a guide card seat 42, and the middle and front parts of the inner end surface of the guide card seat 42 are rotatably connected with the first synchronous pulley 43. The two groups of first synchronous pulleys 43 are meshed and connected by the first synchronous belt 45. A threaded rotating sleeve 49 is provided inside the first synchronous pulley 43 located in the middle. The inner end surface of the guide card seat 42 is slidably connected with a positioning slide 44. A threaded guide shaft 41 is provided at the center of the upper end surface of the positioning slide 44, and two groups of motor guide seats 48 are provided at the lower end surface of the positioning slide 44. The inner end surface of each group of motor guide seats 48 is fixedly connected with a stepping motor 47. The output ends of the two groups of stepping motors 47 are provided with a hole drilling bit 46. The two groups of hole drilling bits 46 can be driven by the stepping motor 47 to synchronously perform hole drilling operations on the two groups of cartons, thereby effectively improving the efficiency of the equipment in punching cartons.

[0048] The positioning slide 44 is adapted to the threaded guide shaft 41 through the threaded sleeve 49 and then threadedly slidably connected to the inner end face of the guide card seat 42. When the carton is punched, the first synchronous pulley 43 can drive another set of first synchronous pulleys 43 and the threaded sleeve 49 to rotate through the first synchronous belt 45, so that the threaded sleeve 49 can be threadedly connected to the threaded guide shaft 41, thereby driving the positioning slide 44 and the two sets of hole-opening drill bits 46 to move downward accurately, facilitating subsequent fast and accurate punching operations, and the hole-opening drill bit 46 and the fifth bevel gear 224 are arranged on the same axis, which can effectively improve the accuracy and stability of the subsequent hole-opening drill bit 46 in punching the outside of the carton.

[0049] Working principle: Before use, the staff can position the carton unloading module to the upper part of the support base 8, and at the same time, the carton loading module can be positioned to the lower part of the support base 8. The loading module at the lower part can position the carton in the middle of the four groups of clamping devices 222. When punching the carton, the staff can start the reduction motor 210. At this time, the reduction motor 210 can drive the second bevel gear 27 to rotate. At the same time, the second bevel gear 27 can drive the transmission card shaft 25 to rotate through the third bevel gear 29. The transmission card shaft 25 can drive the two groups of first bevel gears 26 to rotate. The two groups of first bevel gears The wheel 26 can mesh with the two groups of sixth bevel gears 225, and then synchronously drive the two groups of fifth bevel gears 224 to rotate in the opposite direction. The fifth bevel gear 224 at the bottom can synchronously drive the four groups of transmission screws 221 to rotate forward through the four groups of fourth bevel gears 223. At this time, the four groups of transmission screws 221 can be connected with the threaded slide 2225 through threads, thereby driving the four groups of limiting clamps 2223 to move centripetally, so that the four groups of limiting clamps 2223 can lock the carton. When the limiting clamps 2223 are not adjusted in the displacement of the threaded slide 2225, the four groups of limiting clamps 2223 are locked. The displacement spacing is the same, and various square cartons can be locked and limited, which is convenient for subsequent punching operations. If a rectangular carton is to be locked, the staff can rotate the threaded guide sleeve 2224 through an external tool, and the threaded guide sleeve 2224 can be used to adjust the forward and backward spacing of the limit clamp 2223, so as to facilitate the subsequent adaptation to the locking of different types of rectangular cartons. After the above-mentioned locking of the carton is completed, the two sets of gear swing cylinders 6 can synchronously drive the limit device 2 to rotate 180 degrees. At this time, the limit device 2 can drive the two sets of locked cartons to be positioned at the bottom of the punching device 4, and then the servo motor 3 is started, and the servo motor 3 can be driven by the first synchronous The pulley 43 and the first synchronous belt 45 synchronously drive the threaded sleeve 49 to rotate. At this time, the threaded sleeve 49 can be connected to the threaded guide shaft 41 through a thread, thereby driving the positioning slide 44 to move downward. When the positioning slide 44 moves downward, the stepper motor 47 at the bottom of the two groups of positioning slides 44 can drive the hole drill bit 46 to rotate at high speed, and then the hole drill bit 46 can punch the carton. After the punching is completed, the reduction motor 210 is reversed, so that the upper and lower four groups of clamping devices 222 are displaced in the opposite direction. The clamping device 222 at the lower part can lock the new group of cartons. At the same time, the external unloading module can guide the upper carton for unloading.

[0050] 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. A carton opening device for transport without unpacking, with a limiting function, comprises a support base, wherein the four corners of the upper end surface of the support base are provided with aluminum profile columns, and gear swing cylinders are provided on both sides of the support base. Two sets of gear swing cylinders are fixedly provided with a positioning rotation base at the center of the inner end surface, and two sets of positioning rotation grooves are symmetrically opened on the side end surface of the support base, characterized in that: A limiting device, wherein the limiting device is fixedly connected to the two sets of the alignment seats, and the two sets of the gear swing cylinders drive the limiting device to perform cyclic flipping inside the support seat; A punching device is fixedly arranged on the upper part of the four groups of aluminum profile columns, and a servo motor for power supply is arranged on the upper part of the punching device, and the punching device is used to punch holes in cartons.

2. The carton hole-punching device for transportation without unpacking and having a limiting function according to claim 1 is characterized in that: The limiting device includes a motor holder, and two sets of locking devices are provided on both side ends of the motor holder. The two sets of opposite locking devices located on the same vertical side are fixedly connected by a fixing column, and the side end faces of the two sets of locking devices are provided with a fixed card plate, and a fixed guide seat is fixedly provided at the center of the side end face of the fixed card plate. The internal rotation of the two sets of fixed card plates is connected with a transmission card shaft, and the outer end face of the transmission card shaft is provided with a first bevel gear near the two end heads, and the outer end face of the transmission card shaft is provided with a third bevel gear near the middle. The inner end face of the motor holder is fixedly connected with a reduction motor, and a second bevel gear is provided at the output end of the reduction motor.

3. The carton hole-punching device for transportation without unpacking and having a limiting function according to claim 2 is characterized in that: The locking device includes a limiting guide seat, a sixth bevel gear is rotatably connected to the middle part of the inner end surface of the limiting guide seat, and a fifth bevel gear is provided on the upper end surface of the sixth bevel gear, four groups of fourth bevel gears are equidistantly rotatably connected to the inner end surface of the limiting guide seat near the fifth bevel gear, and a transmission screw is fixedly connected to the inner end surface of the fourth bevel gear, and the inner end surface of the limiting guide seat is threadedly connected to a clamping device through the transmission screw.

4. The device for opening a carton for transportation without unpacking and having a limiting function according to claim 3 is characterized in that: The clamping device includes a threaded slide, a threaded guide sleeve is rotatably clamped at the middle part of the inner end surface of the threaded slide, and a limiting clamp is slidably clamped at the inner end surface of the threaded slide, linear guide shafts are provided on both sides of the rear end surface of the limiting clamp, and a threaded rotating shaft is fixedly provided at the center of the rear end surface of the limiting clamp.

5. The device for opening a hole in a carton for transportation without unpacking and having a position limiting function according to claim 4, characterized in that: The limiting clamp is adapted to the threaded guide sleeve through the threaded rotating shaft and is then threadedly slidably connected to the inner end surface of the threaded slide. The threaded slide is threadedly slidably connected to the upper end surface of the limiting guide seat through the transmission screw.

6. The device for opening a hole in a carton for transportation without unpacking and having a limiting function according to claim 4, characterized in that: The four groups of fourth bevel gears are all meshed and connected with the fifth bevel gear located in the middle, and the upper and lower groups of sixth bevel gears are all meshed and connected with the first bevel gear. The two groups of sixth bevel gears rotate synchronously in opposite directions, and the second bevel gear is meshed and connected with the third bevel gear.

7. The device for opening a hole in a carton for transportation without unpacking and having a limiting function according to claim 4, characterized in that: The punching device includes a guide card seat, and the middle and front parts of the inner end surface of the guide card seat are rotatably connected with the first synchronous pulley, and the two groups of the first synchronous pulleys are meshed and connected by the first synchronous belt. A threaded rotating sleeve is provided inside the first synchronous pulley located in the middle, and the inner end surface of the guide card seat is slidably connected with a positioning slide, a threaded guide shaft is provided at the center of the upper end surface of the positioning slide, and two groups of motor guide seats are provided at the lower end surface of the positioning slide, and the inner end surface of each group of the motor guide seats is fixedly connected with a stepping motor, and the output ends of the two groups of stepping motors are provided with hole-opening drill bits.

8. The device for opening a hole in a carton for transportation without unpacking and having a position limiting function according to claim 7, characterized in that: The positioning slide is adapted to the threaded guide shaft through the threaded sleeve and then threadedly slidably connected to the inner end surface of the guide clamp, and the hole drill and the fifth bevel gear are arranged on the same axis.

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