High-accuracy punching method for carton handle hole

Abstract

The invention relates to the technical field of carton production, in particular to a high-accuracy carton handle hole punching method. The first moving frame and the second moving frame are arranged above the punching platform, in the downward moving process of the first moving frame, a downward pressing limiting seat can be pressed against the periphery of a hole site through an elastic mechanism, a carton board is preliminarily positioned, then a punching head further moves downwards through stretching of the elastic mechanism, and the punching purpose is achieved; in the downward moving process of the first moving frame, the flattening roller body automatically moves towards the two sides, the punching part is flattened outwards, the punching accuracy is improved, an air flow channel shared by air suction and air blowing is formed in the punching head, air blowing or air suction is switched at different punching stages, after punching, paper is blown away from the punching head through air blowing, then air suction is switched, and the punching precision is improved. According to the punching device for the portable hole of the carton board, through a simple and stable mechanical structure, the accuracy and continuity of punching of the portable hole of the carton board are improved.

Description

[0001] This case is a divisional application of the patent application with application number 2024107181707, application date 2024-06-05, and title “Carton Handle Hole Punching Device and Punching Method” as the parent case. Technical Field

[0002] The invention relates to the technical field of carton production, and in particular to a method for punching handle holes of a carton with high accuracy. Background Art

[0003] During the production process of cartons, it is necessary to punch out waist-shaped hand-held holes on the carton board. In the existing carton punching mechanism, in order to accurately control the punching position and improve the punching quality, the carton is generally pre-positioned by a pressing mechanism, and then the punching part is punched by a punch. However, the existing carton punching machine may be uneven due to the creases of the carton board itself during the initial pressing and positioning, resulting in the carton being twisted and deformed during the punching process, affecting the accuracy of the punching position, and even causing the punching position to be unable to be completely punched out. In addition, during the punching process, due to the effect of static electricity, paper scraps or waste formed by punching will be adsorbed on the punch, affecting the continuity of the punching.

[0004] Therefore, how to improve the carton handle hole punching device and punching method, and improve the accuracy and continuity of the carton board handle hole punching through a simple and stable mechanical structure, has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method for punching handle holes of a carton with high accuracy, and to improve the accuracy and continuity of punching handle holes of a carton board through a simple and stable mechanical structure.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] Carton hand hole punching device, including:

[0008] A punching platform, wherein a first waist-round hole is provided in the middle of the punching platform;

[0009] A bracket, the bracket being connected to the punching platform;

[0010] A first movable frame, the first movable frame being vertically movably connected to the support;

[0011] A driving mechanism, the driving mechanism is connected between the bracket and the first movable frame, and is used to drive the first movable frame to move;

[0012] A punch head, the punch head is connected to the first moving frame through a connecting rod, the cross section of the punch head is an oval circle, the punch head is located directly above the first oval hole, an air flow channel is provided inside the punch head, and the air flow channel extends to the lower part of the punch head;

[0013] An air intake pipe, the air intake pipe is connected to the punch head, the air intake pipe is communicated with the air flow channel, and the air intake pipe is connected to a first valve;

[0014] An air blowing pipe, the air blowing pipe is connected to the punch head, the air blowing pipe is communicated with the air flow channel, and the air blowing pipe is connected to a second valve;

[0015] A horizontal guide rail connected to the first moving frame;

[0016] a second mobile frame, the second mobile frame being located directly below the horizontal guide rail;

[0017] An elastic mechanism, the elastic mechanism comprising a spring and two mutually symmetrical link mechanisms, the link mechanism comprising a first slider and a first link, the first slider being slidably connected to the horizontal guide rail, one end of the first link being pivotally connected to the first slider, and the other end being pivotally connected to the upper portion of the second movable frame, the spring being connected between the two first sliders;

[0018] A downward pressure limiting seat, the downward pressure limiting seat is connected to the second moving frame, a second waist round hole is provided in the middle of the downward pressure limiting seat, and the punch head is inserted into the second waist round hole;

[0019] The flattening roller assembly, the two groups of flattening roller assemblies are symmetrically arranged with each other, the flattening roller assembly includes a limit plate, a movable limit rod and a flattening roller body, the limit plate is provided with inclined linear grooves which are distributed up and down and have the same slope, the inner end of the inclined linear groove is lower than the outer end; the movable limit rod is provided with a second slider which slides with each inclined linear groove respectively, the flattening roller body is pivotally connected to the lower end of the movable limit rod, the flattening roller body is filled with a weight block, and in a free state, the second slider moves to the lower end of the inclined linear groove, and the flattening roller body is located below the punching head.

[0020] The punching method of the above-mentioned carton handle hole punching device comprises the following steps:

[0021] Align the position of the carton board to be punched with the position of the first waist-round hole, and then control the driving mechanism to drive the first moving frame to move downward. During the movement, control the first valve to be closed and the second valve to be closed. During the movement, the flattening roller body moves along the inclined linear groove through the second slider, so that the flattening roller body moves to both sides, and then the downward pressure limit seat is pressed against the upper part of the carton board. The first moving frame continues to move downward, so that the two first sliders move outward synchronously, so that the spring is stretched, and the punching head continues to move downward, passing through the first waist-round hole, so that a waist-round hand is punched out on the carton board. Lift the hole, control the second valve to open, and use the air pump to blow air into the air flow channel through the blowing pipe to blow the waist-shaped paper piece away from the punching head, and then control the driving mechanism to drive the first movable frame to move upward. During the movement, control the first valve to open and the second valve to close, so that the paper scraps generated by punching are attracted through the air flow channel. During the movement, the first slider moves synchronously to the middle of the horizontal guide rail under the tension of the spring, so that the punching head is retracted into the downward pressure limit seat, and then the flattening roller body returns to the bottom of the punching head under the action of gravity until it is separated from the punching platform, completing the punching of the carton handle hole.

[0022] The beneficial effects of the present invention are as follows: by arranging the first movable frame and the second movable frame structure above the punching platform, and utilizing the elastic mechanism of a specific structure, during the downward movement of the first movable frame, the elastic mechanism can be utilized to first press the downward pressure limit seat against the periphery of the hole position, thereby preliminarily positioning the carton board, and then utilizing the stretching of the elastic mechanism to enable the punching head to further move downward relative to the downward pressure limit seat, thereby achieving the purpose of punching; and by arranging the flattening roller assembly, during the downward movement of the first movable frame, the flattening roller body will spontaneously move to both sides, thereby flattening the punching position outward. , improve the accuracy of punching, by setting a common air flow channel for suction and blowing inside the punching head, switching between blowing and suction at different stages of punching, after punching, first use blowing to blow the paper away from the punching head, and then switch to suction to absorb the dust formed in the punching process, in the process of the first moving frame returning to its original position upward, use the gravity of the flattening roller body itself to cooperate with the inclined linear groove to automatically return to the bottom of the punching head, so as to be flattened for the next punching. The present invention improves the accuracy and continuity of punching the hand-held holes of the carton board through a simple and stable mechanical structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a carton handle hole punching device according to a specific embodiment of the present invention;

[0024] Figure 2 It is a side view of a carton handle hole punching device according to a specific embodiment of the present invention;

[0025] Figure 3 for Figure 2 AA cross-section diagram;

[0026] Description of labels:

[0027] 1. Punching platform; 1001. First waist round hole;

[0028] 2. Bracket;

[0029] 3. The first mobile frame;

[0030] 4. Driving mechanism;

[0031] 5. Punching head; 51. Connecting rod; 52. Air flow channel;

[0032] 6. Inhalation pipe;

[0033] 7. Blowing tube;

[0034] 8. Horizontal guide rail;

[0035] 9. Second mobile rack;

[0036] 101. first slider; 102. first connecting rod; 103. spring;

[0037] 11. Press down the limit seat; 111. Second waist round hole; 112. First through hole;

[0038] 121, limit plate; 1211, inclined linear groove; 122, movable limit rod; 1221, second slide block; 123, flattening roller body;

[0039] 13. Collection box. DETAILED DESCRIPTION

[0040] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0041] Please refer to Figures 1 to 3 The specific embodiment of the present invention relates to a carton handle hole punching device, comprising:

[0042] A punching platform 1, wherein a first waisted circular hole 1001 is provided in the middle of the punching platform 1;

[0043] A bracket 2, wherein the bracket 2 is connected to the punching platform 1;

[0044] A first mobile frame 3, wherein the first mobile frame 3 is vertically movably connected to the support 2;

[0045] A driving mechanism 4, wherein the driving mechanism 4 is connected between the bracket 2 and the first movable frame 3, and is used to drive the first movable frame 3 to move;

[0046] A punch head 5, the punch head 5 is connected to the first moving frame 3 through a connecting rod 51, the cross section of the punch head 5 is oval, the punch head 5 is located directly above the first oval hole 1001, and an air flow channel 52 is provided inside the punch head 5, and the air flow channel 52 extends to the lower part of the punch head 5;

[0047] An air intake pipe 6, the air intake pipe 6 is connected to the punch head 5, the air intake pipe 6 is communicated with the air flow channel 52, and the air intake pipe 6 is connected to a first valve;

[0048] An air blowing pipe 7, wherein the air blowing pipe 7 is connected to the punch head 5, the air blowing pipe 7 is communicated with the air flow channel 52, and the air blowing pipe 7 is connected to a second valve;

[0049] A horizontal guide rail 8, wherein the horizontal guide rail 8 is connected to the first moving frame 3;

[0050] A second mobile frame 9, wherein the second mobile frame 9 is located directly below the horizontal guide rail 8;

[0051] An elastic mechanism, the elastic mechanism includes a spring 103 and two mutually symmetrical link mechanisms, the link mechanism includes a first slider 101 and a first link 102, the first slider 101 is slidably connected to the horizontal guide rail 8, one end of the first link 102 is pivotally connected to the first slider 101, and the other end is pivotally connected to the upper part of the second mobile frame 9, and the spring 103 is connected between the two first sliders 101;

[0052] A downward pressing limit seat 11, wherein the downward pressing limit seat 11 is connected to the second moving frame 9, a second waisted circular hole 111 is provided in the middle of the downward pressing limit seat 11, and the punch head 5 is inserted into the second waisted circular hole 111;

[0053] The flattening roller assembly, the two groups of flattening roller assemblies are symmetrically arranged with each other, the flattening roller assembly includes a limit plate 121, a movable limit rod 122 and a flattening roller body 123, the limit plate 121 is provided with inclined linear grooves 1211 which are distributed up and down and have the same slope, the inner end of the inclined linear groove 1211 is lower than the outer end; the movable limit rod 122 is provided with a second slider 1221 which is respectively slidably matched with each inclined linear groove 1211, the flattening roller body 123 is pivotally connected to the lower end of the movable limit rod 122, the flattening roller body 123 is filled with a weight block, in the free state, the second slider 1221 moves to the lower end of the inclined linear groove 1211, and the flattening roller body 123 is located below the punching head 5.

[0054] In the above embodiment, by arranging the first movable frame 3 and the second movable frame 9 structure above the punching platform 1, and utilizing the elastic mechanism of a specific structure, during the downward movement of the first movable frame 3, the downward pressure limit seat 11 can be first pressed against the periphery of the hole position by utilizing the elastic mechanism to preliminarily position the carton board, and then the stretching of the elastic mechanism is utilized to make the punching head 5 further move downward relative to the downward pressure limit seat 11 to achieve the purpose of punching. By arranging the flattening roller assembly, during the downward movement of the first movable frame 3, the flattening roller body 123 will spontaneously move to both sides to flatten the punching part outward. To improve the accuracy of punching, an air flow channel 52 shared by suction and blowing is provided inside the punching head 5, and blowing or suction is switched at different stages of punching. After punching, the paper sheet is first blown away from the punching head 5 by blowing, and then suction is switched to absorb the dust formed during the punching process. During the upward return of the first movable frame 3, the flattening roller body 123 automatically returns to the bottom of the punching head 5 by its own gravity in conjunction with the inclined linear groove 1211, so as to be flattened for the next punching. The present invention improves the accuracy and continuity of punching handle holes in carton boards through a simple and stable mechanical structure.

[0055] As a preferred embodiment, the driving mechanism 4 is a telescopic cylinder, a cylinder body of the telescopic cylinder is connected to the bracket 2 , and a piston rod of the telescopic cylinder is connected to the first moving frame 3 .

[0056] As a preferred embodiment, the telescopic cylinder is a pneumatic cylinder, a hydraulic cylinder or an electric cylinder.

[0057] As a preferred embodiment, the side of the downward limit seat 11 is provided with multiple first through holes 112, and the side of the punch head 5 is provided with multiple second through holes corresponding to the first through holes 112 one by one. In the free state, the first through holes 112 are aligned with the second through holes.

[0058] As a preferred embodiment, a waste collection box 13 is further included, and the waste collection box 13 is located directly below the first oval hole 1001 .

[0059] As a preferred embodiment, when the second slider 1221 moves to the upper end of the inclined linear groove 1211 , the flattening roller body 123 is located on both sides of the downward pressing limit seat 11 , and the lower end of the flattening roller body 123 is higher than the lower end of the downward pressing limit seat 11 .

[0060] Preferably, the angle between the inclined straight line groove 1211 and the horizontal plane is 30-45 degrees. The angle should not be too large, otherwise the flattening roller body 123 will interfere with the lower pressure limit seat 11 during the movement. The angle should not be too small, otherwise the component of the upward force applied by the punching platform 1 to the flattening roller assembly during the movement will be too small, which may easily cause jamming.

[0061] The present invention also relates to a punching method of the above-mentioned carton handle hole punching device, comprising the following steps:

[0062] Align the position of the carton board that needs to be punched with the position of the first waist round hole 1001, and then control the driving mechanism 4 to drive the first movable frame 3 to move downward. During the movement, control the first valve to be closed and the second valve to be closed; during the movement, the flattening roller body 123 moves along the inclined linear groove 1211 through the second slider 1221, so that the flattening roller body 123 moves to both sides, and then the downward pressure limit seat 11 is pressed against the upper part of the carton board, and the first movable frame 3 continues to move downward, so that the two first sliders 101 move outward synchronously, so that the spring 103 is stretched, and the punching head 5 continues to move downward, passes through the first waist round hole 1001, and punches out the carton board. The waist-shaped carrying hole controls the second valve to open, and blows air into the air flow channel 52 through the air pump through the blowing pipe 7, so that the waist-shaped paper piece that is punched out is blown away from the punching head 5, and then the driving mechanism 4 is controlled to drive the first movable frame 3 to move upward. During the movement, the first valve is controlled to open and the second valve is closed, so that the paper scraps generated by punching are attracted through the air flow channel 52. During the movement, the first slider 101 moves synchronously to the middle of the horizontal guide rail 8 under the pulling force of the spring 103, so that the punching head 5 is retracted into the downward pressure limit seat 11, and then the flattening roller body 123 returns to the bottom of the punching head 5 under the action of gravity until it is separated from the punching platform 1, and the punching of the carton carrying hole is completed.

[0063] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high-accuracy carton handle hole punching method, characterized in that: Based on the carton handle hole punching device, the carton handle hole punching device includes: A punching platform, wherein a first waist-round hole is provided in the middle of the punching platform; A bracket, the bracket being connected to the punching platform; A first movable frame, the first movable frame being vertically movably connected to the support; A driving mechanism, the driving mechanism is connected between the bracket and the first movable frame, and is used to drive the first movable frame to move; A punch head, the punch head is connected to the first moving frame through a connecting rod, the cross section of the punch head is an oval circle, the punch head is located directly above the first oval hole, an air flow channel is provided inside the punch head, and the air flow channel extends to the lower part of the punch head; An air intake pipe, the air intake pipe is connected to the punch head, the air intake pipe is communicated with the air flow channel, and the air intake pipe is connected to a first valve; An air blowing pipe, the air blowing pipe is connected to the punch head, the air blowing pipe is communicated with the air flow channel, and the air blowing pipe is connected to a second valve; A horizontal guide rail connected to the first moving frame; a second mobile frame, the second mobile frame being located directly below the horizontal guide rail; An elastic mechanism, the elastic mechanism comprising a spring and two mutually symmetrical link mechanisms, the link mechanism comprising a first slider and a first link, the first slider being slidably connected to the horizontal guide rail, one end of the first link being pivotally connected to the first slider, and the other end being pivotally connected to the upper portion of the second movable frame, the spring being connected between the two first sliders; A downward pressure limiting seat, the downward pressure limiting seat is connected to the second moving frame, a second waist round hole is provided in the middle of the downward pressure limiting seat, and the punch head is inserted into the second waist round hole; Flattening roller assembly, two groups of flattening roller assemblies are symmetrically arranged, the flattening roller assembly includes a limit plate, a movable limit rod and a flattening roller body, the limit plate is provided with inclined linear grooves which are distributed up and down and have the same slope, the inner end of the inclined linear groove is lower than the outer end; the movable limit rod is provided with a second slider which is respectively slidably matched with each inclined linear groove, the flattening roller body is pivotally connected to the lower end of the movable limit rod, the flattening roller body is filled with a weighting block, in a free state, the second slider moves to the lower end of the inclined linear groove, and the flattening roller body is located below the punching head; the angle between the inclined linear groove and the horizontal plane is 30-45 degrees; The side of the downward pressure limit seat is provided with a plurality of first through holes, and the side of the punch head is provided with a plurality of second through holes corresponding to the first through holes one by one, and in a free state, the first through holes are aligned with the second through holes; Also includes a waste collection box, the waste collection box is located directly below the first oval hole; The method for punching handle holes in a carton comprises the following steps: The first moving frame moves downward, and the elastic mechanism is used to make the downward pressure limit seat first press against the hole position to preliminarily position the carton board; then the elastic mechanism is stretched to make the punching head move further downward relative to the downward pressure limit seat to achieve the purpose of punching; during the downward movement of the first moving frame, the flattening roller body will spontaneously move to both sides to flatten the punching part outward; when the second slider moves to the upper end of the inclined linear groove, the flattening roller body is located on both sides of the downward pressure limit seat, and the lower end of the flattening roller body is higher than the lower end of the downward pressure limit seat; After punching, the paper is blown away from the punch head by air blowing, and then switched to suction to absorb the dust formed during the punching process; The first moving frame returns upwards, and automatically returns to the bottom of the punching head by utilizing the gravity of the flattening roller body itself and the inclined linear groove.

2. The high-accuracy carton handle hole punching method according to claim 1 is characterized in that: The driving mechanism is a telescopic cylinder, a cylinder body of the telescopic cylinder is connected to the bracket, and a piston rod of the telescopic cylinder is connected to the first moving frame.

3. The high-accuracy carton handle hole punching method according to claim 2 is characterized in that: The telescopic cylinder is a pneumatic cylinder, a hydraulic cylinder or an electric cylinder.

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