Rotary punching device

Abstract

A sliding mechanism is arranged on the upper portion of the rotary punching device and can be in sliding connection with an upper cross beam of a carton forming machine, a main body support is connected to the lower end of the sliding mechanism, a punching tool pushing mechanism is arranged at the lower end of the main body support, and a punching tool rotary switching mechanism is connected to the lower portion of the punching tool pushing mechanism. The punching cutter pushing mechanism can drive the punching cutter rotation switching mechanism to move up and down in a reciprocating mode, the longitudinal axis of the punching cutter rotation switching mechanism is parallel to the upper cross beam, and the punching cutter rotation switching mechanism can rotate around the longitudinal axis of the punching cutter rotation switching mechanism so as to switch different punching cutters. The rotating mechanism is creatively arranged, so that the punching device is of a structure similar to a tool magazine. The punching pressure can be guaranteed, meanwhile, the installation space is saved, and the installation and machining scheme of two or more cutting dies is achieved.

Description

Technical Field

[0001] The invention relates to processing equipment, in particular to a rotary punching device. Background Art

[0002] The existing technical solutions are similar to die cutting, with a die mounting plate installed under the cylinder and a punching die installed on the mounting plate. However, there are certain limitations. A punching device can only be installed with one die or multiple cutters can only be processed at the same time, and cannot be selected for separate processing. For example, Chinese patent CN 215320934U discloses a cardboard punching device and a carton forming machine. However, although the punching device can realize the replacement of the die, it needs to be replaced in a non-processing state and cannot be replaced during the processing. Although multiple cutters can be installed, multiple cutters cannot be punched separately.

[0003] Chinese patent CN117002084A discloses a carton punching device, whose technical solution achieves the change of punching diameter by setting three oblong bins, but it is also impossible to achieve the change of tool switching, and can only adjust the punching diameter. Chinese patent CN112192889A discloses a cardboard hole-punching device for packaging cartons and a method of use, which can replace punching columns and punching heads of different diameters or shapes through card blocks, card slots, slots and bolts, thereby facilitating the replacement of punching heads. However, this method of replacing tools is slow and requires manual replacement, and cannot achieve fast switching.

[0004] Existing punching devices have certain limitations. A punching device can only be installed with one mold or multiple tools can only be installed for processing at the same time, and cannot be selected for processing separately. If two or more cutting molds are required to be processed separately, multiple sets of punching devices need to be installed side by side, which takes up a lot of space, and because of limited space, it may not be possible to install multiple sets. Punching requires maintaining a certain pressure, so there are certain requirements for the specifications of the cylinder, which further limits the installation plan of multiple sets side by side. Summary of the invention

[0005] The technical problem to be solved by the present invention is to achieve the effect of processing multiple shapes with one set of punching devices, and to set the punching die mounting plate as a simple tool magazine. When dies of different specifications are required, the rotating control mechanism is used to rotate to the corresponding position to achieve the processing of the specified shape. To this end, the present invention proposes the following solution:

[0006] A rotary punching device is provided with a sliding mechanism on the upper part, which can be slidably connected to the upper crossbeam of a carton forming machine, the lower end of the sliding mechanism is connected to a main body bracket, and the lower end of the main body bracket is provided with a punching tool pushing mechanism. The improvement lies in that: the lower part of the punching tool pushing mechanism is connected to a punching tool rotation switching mechanism, the punching tool pushing mechanism can drive the punching tool rotation switching mechanism to reciprocate up and down, the longitudinal axis of the punching tool rotation switching mechanism is parallel to the upper crossbeam, and the punching tool rotation switching mechanism can rotate around its longitudinal axis to switch different punching tools.

[0007] Furthermore, the sliding mechanism is a horizontal plate and a plurality of sliders arranged on the horizontal plate, the plurality of sliders can fit with the slide rail of the upper beam, and the horizontal plate is also provided with a locking device that can lock the position of the rotating punching device relative to the upper beam.

[0008] Furthermore, the main body support is a pair of vertically arranged connecting plates, a weight-reducing connecting plate is arranged between the two connecting plates, the upper ends of the two connecting plates are connected to the sliding mechanism, and the lower ends are connected to the punching tool pushing mechanism.

[0009] Furthermore, a connecting reinforcing rib is provided at the connection between the main body bracket and the upper sliding mechanism, and a connecting reinforcing rib is provided at the connection between the main body bracket and the lower punching tool pushing mechanism.

[0010] Furthermore, the punching tool rotation switching mechanism includes a frame with an opening downward, the frame is composed of a fixed connecting plate arranged horizontally on the upper part and vertical plates at both ends of the fixed connecting plate, a tool fixing seat is arranged between the vertical plates through bearings, a rotary actuator is arranged on the outer side of the vertical plate on one side, the rotating shaft of the rotary actuator is connected to the tool fixing seat, and the rotary actuator can drive the tool fixing seat to rotate.

[0011] Furthermore, the tool fixing seat is a polygonal cylinder, and a plurality of punching tools are detachably connected to the cylindrical surface of the polygonal cylinder.

[0012] Furthermore, the polygonal cylinder is a cylinder 1 with a quadrilateral cross-section, and avoidance arcs are arranged at the connection points of the four cylindrical surfaces of the cylinder 1 to prevent the polygonal cylinder from colliding with the upper fixed connection plate when rotating.

[0013] Furthermore, the polygonal column is a column 2 with a hexagonal or octagonal cross-section, and a positioning ring is provided at one end or both ends of the column 2, and the diameter of the positioning ring is larger than the sum of the opposite side dimensions of the hexagon or octagon and the thickness of the cutting die.

[0014] Furthermore, a locking device is provided at one end of the sliding mechanism, and the locking device includes a locking seat arranged on the horizontal plate of the sliding mechanism, a locking pin is rotatably inserted in the locking seat, a protrusion is provided on the inner side of the locking pin, and a rotating handle is provided on the outer side of the locking pin. The rotating handle is driven to rotate so that the protrusion presses against the upper beam of the carton forming machine, thereby realizing the positioning of the sliding mechanism.

[0015] Furthermore, the punching tool pushing mechanism is a cylinder with a push rod disposed inside the cylinder, the push rod being connected to the lower fixed connecting plate, the cylinder drives the fixed connecting plate to reciprocate up and down through the push rod, and the rotary actuator is an absolute encoder motor.

[0016] The present invention creatively arranges a rotating mechanism to allow the punching device to realize a structure similar to a tool magazine. It can ensure the punching pressure while saving installation space, and realize the installation and processing scheme of two or more knife dies. It solves the problem that a single punching device can only install one punching die to process one shape, and realizes that a single punching device can install multiple punching dies, and different shapes can be processed by selecting different dies. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the front view of the patent

[0018] Figure 2 This is the vertical cross-sectional view of this patent

[0019] Figure 3 A three-dimensional schematic diagram of this patent

[0020] Figure 4 This is the longitudinal cross-sectional view of this patent

[0021] Figure 5 This is a longitudinal lateral schematic diagram of this patent

[0022] Figure 6 This is a longitudinal and lateral schematic diagram of this patent

[0023] Figure 7 This is the main view of the patent

[0024] Explanation of markings on the drawings: 1. Sliding mechanism, 2. Locking device, 3. Main bracket, 4. Punching tool pushing mechanism, 5. Vertical plate, 6. Punching tool rotation switching mechanism, 7. Fixed connecting plate, 8. Tool 1, 9. Tool 2, 10. Tool fixing seat; 11. Bearing, 14. Tool 4, 13. Polygonal cylinder, 15. Arc, 30. Positioning ring, 21-26. Tool 1-6 (tool on hexagonal cylinder). DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and beneficial effects of the present invention more clearly understood, the present invention is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. Certain embodiments of the present invention will be described more comprehensively with reference to the accompanying drawings, in which some but not all embodiments will be shown. In fact, the various embodiments of the present invention can be implemented in many different forms and should not be construed as being limited to the embodiments described herein; rather, these embodiments are provided so that the present invention meets applicable legal requirements.

[0026] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "front", "back" and the like indicate directions or positional relationships based on directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] As shown in the attached drawings of the present invention, a rotary punching device is provided with a sliding mechanism on the upper part thereof, which can be slidably connected to the upper crossbeam of a carton forming machine, the lower end of the sliding mechanism is connected to a main body bracket, the lower end of the main body bracket is provided with a punching tool pushing mechanism, the lower part of the punching tool pushing mechanism is connected to a punching tool rotation switching mechanism, the punching tool pushing mechanism can drive the punching tool rotation switching mechanism to reciprocate up and down, the longitudinal axis of the punching tool rotation switching mechanism is parallel to the upper crossbeam, and the punching tool rotation switching mechanism can rotate around its longitudinal axis to switch different punching tools.

[0028] The sliding mechanism is a horizontal plate and several sliders arranged on the horizontal plate, and the several sliders can fit with the slide rails of the upper crossbeam. The horizontal plate is also provided with a locking device, which can lock the position of the rotating punching device relative to the upper crossbeam. The main body bracket is a pair of vertically arranged connecting plates, and a connecting column is arranged between the two connecting plates. The upper ends of the two connecting plates are connected to the sliding mechanism, and the lower ends are connected to the punching tool pushing mechanism. The main body bracket is connected to the upper sliding mechanism with a connecting reinforcing rib plate, and the main body bracket is connected to the lower punching tool pushing mechanism with a connecting reinforcing rib plate. The punching tool rotating switching mechanism includes a frame with an opening downward, and the frame is composed of a fixed connecting plate arranged horizontally at the upper part and vertical plates at both ends of the fixed connecting plate. A tool fixing seat is arranged between the vertical plates through a bearing, and a rotating actuator is arranged on the outer side of the vertical plate on one side. The rotating shaft of the rotating actuator is connected to the tool fixing seat, and the rotating actuator can drive the tool fixing seat to rotate. The tool fixing seat is a polygonal cylinder, and the cylindrical surface of the polygonal cylinder is detachably connected with several punching tools. One end or both ends of the hexagonal or octagonal cylinder are provided with a positioning ring, and the positioning ring is provided with a positioning identification device. The cylindrical connection of each of the quadrilateral cylinders is provided with an avoidance arc to prevent the quadrilateral cylinder from colliding with the upper fixed connecting plate when rotating. One end of the sliding mechanism is provided with a locking device, and the locking device includes a locking seat arranged on the horizontal plate of the sliding mechanism, and a locking pin is rotatably penetrated in the locking seat, and a convex block is arranged on the inner side of the locking pin, and a rotating handle is arranged on the outer side of the locking pin. The rotating handle is driven to rotate so that the convex block presses against the upper crossbeam of the carton forming machine, thereby realizing the positioning of the sliding mechanism. The punching tool pushing mechanism is a cylinder, and a push rod is arranged in the cylinder. The push rod is connected to the lower fixed connecting plate, and the cylinder drives the fixed connecting plate to reciprocate up and down through the push rod. The positioning identification device is a Hall sensor, a dovetail groove with a narrowed upper end is provided in the sliding block, and the cross section of the sliding rail is adapted to the narrowed dovetail groove.

[0029] As shown in the attached drawings of the present invention, the punching device mainly includes a main frame, a cylinder, a rotating mechanism and a rotating actuator. The rotating mechanism is connected to the bearing seat through a bearing. The cross-section of the rotating mechanism is a quadrilateral, and one corner of the quadrilateral is rounded to solve the problem of angle interference during rotation. The two adjacent surfaces of the rounded corners of the rotating mechanism are force-bearing contact surfaces, and the two surfaces opposite to them are installation surfaces for installing the punching mold. In the example structure shown in the attached drawings, the extension of the cylinder can realize the punching of the knife die 1, and the rotation of the rotary actuator by 90 degrees can realize the punching of the knife die 2.

[0030] In other solutions, the rotating mechanism can be hexagonal or other polygonal, so as to realize the installation of multiple cutting dies. For example, in the hexagonal example in the structure shown in the attached figure, the rotating mechanism can install 6 cutting dies, which are rotated to the designated position by the rotating actuator according to different punching requirements.

[0031] Key point: The rotating mechanism allows the punching device to achieve a structure similar to a tool magazine.

[0032] It can ensure the punching pressure and save installation space, realize the installation and processing plan of two or more cutting dies, solve the problem that a single punching device can only install one punching die to process one shape, and realize that a single punching device can install multiple punching dies, and different shapes can be processed by selecting different dies.

[0033] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary punching device, the upper part of which is provided with a sliding mechanism, which can be slidably connected with the upper crossbeam of a carton forming machine, the lower end of the sliding mechanism is connected to a main frame, and the lower end of the main frame is provided with a punching tool pushing mechanism, characterized in that: The punching tool pushing mechanism is connected to a punching tool rotation switching mechanism at the bottom, which can drive the punching tool rotation switching mechanism to reciprocate up and down. The longitudinal axis of the punching tool rotation switching mechanism is parallel to the upper crossbeam, and the punching tool rotation switching mechanism can rotate around its longitudinal axis to switch different punching tools.

2. The rotary punching device according to claim 1, wherein: The sliding mechanism is a horizontal plate and a plurality of sliders arranged on the horizontal plate. The plurality of sliders can fit with the slide rail of the upper beam. A locking device is also arranged on the horizontal plate to lock the position of the rotating punching device relative to the upper beam.

3. The rotary punching device according to claim 2, wherein: The main body support is a pair of vertically arranged connecting plates, a weight-reducing connecting plate is arranged between the two connecting plates, the upper ends of the two connecting plates are connected to the sliding mechanism, and the lower ends are connected to the punching tool pushing mechanism.

4. The rotary punching device according to claim 3, wherein: A connecting reinforcing rib is provided at the connection between the main body support and the upper sliding mechanism, and a connecting reinforcing rib is provided at the connection between the main body support and the lower punching tool pushing mechanism.

5. The rotary punching device according to claim 4, wherein: The punching tool rotation switching mechanism includes a frame with an opening downward, and the frame is composed of a fixed connecting plate arranged horizontally on the upper part and vertical plates at both ends of the fixed connecting plate. A tool fixing seat is arranged between the vertical plates through bearings, and a rotary actuator is arranged on the outer side of the vertical plate on one side of the fixed connecting plate. The rotating shaft of the rotary actuator is connected to the tool fixing seat, and the rotary actuator can drive the tool fixing seat to rotate.

6. The rotary punching device according to claim 5, wherein: The tool fixing seat is a polygonal cylinder, and a plurality of punching tools are detachably connected to the cylindrical surface of the polygonal cylinder.

7. The rotary punching device according to claim 6, wherein: The polygonal column is a column with a quadrilateral cross section, and avoidance arcs are arranged at the connection points of the four cylindrical surfaces of the column to prevent the polygonal column from colliding with the upper fixed connection plate when rotating.

8. The rotary punching device according to claim 6, wherein: The polygonal column is a column 2 with a hexagonal or octagonal cross section. A positioning ring is provided at one end or both ends of the column 2. The diameter of the positioning ring is larger than the sum of the opposite side dimensions of the hexagon or octagon and the thickness of the cutting die.

9. The rotary punching device according to claim 7 or 8, wherein: A locking device is provided at one end of the sliding mechanism, and the locking device includes a locking seat arranged on the horizontal plate of the sliding mechanism, a locking pin is rotatably inserted in the locking seat, a protrusion is provided on the inner side of the locking pin, and a rotating handle is provided on the outer side of the locking pin.

10. The rotary punching device according to claim 8, wherein: The punching tool pushing mechanism is a cylinder, a push rod is arranged in the cylinder, the push rod is connected to the lower fixed connecting plate, the cylinder drives the fixed connecting plate to reciprocate up and down through the push rod, and the rotary actuator is an absolute encoder motor.

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