Cutter retracting device of carton folding machine

Abstract

The utility model discloses a paper box folding machine tool retracting device which comprises a tool, a push rod and a folding machine body, a limiting block is arranged on the tool, a sliding groove is formed in the push rod, the position of the sliding block can be adjusted by being matched with the sliding groove, and the sliding block can be matched with the limiting block to play a limiting role. During use, automatic tool retracting work can be achieved structurally, the problem that a to-be-folded paper box is pushed by a push rod by a too long distance, and consequently the paper box is crushed by a tool is solved, the tool retracting distance is adjusted by adjusting the position of the sliding block, the paper box folding mode can be more conveniently adapted, and the yield and the production efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the field of carton packaging machinery, in particular to an automatic tool retracting device in a carton forming machine. Background Art

[0002] During the forming process of cartons, especially paper lunch boxes, processes such as cutting, scoring, folding, and bonding are required. Among them, the folding process is to fold and combine a relatively thin fold-resistant cardboard after cutting and scoring. Folding requires the use of a carton folding machine, which mainly consists of a tool and a push rod. The push rod relies on a motor to achieve reciprocating motion. Each time it reciprocates, the push rod and the tool cooperate to form a relatively acting force in opposite directions. When the carton is folded and formed, the crease of the paper coincides with the tool, and the push rod moves from both sides of the carton towards the tool, applying a force to the paper to be folded, thereby completing the folding work.

[0003] The push rod of the existing carton folding machine has a fixed moving distance. When different cartons are replaced, the folding depth will change, and the fixed moving distance of the push rod will make the push rod and the tool not adapt to the new folding process, resulting in the paper to be folded being broken by the tool. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the defects existing in the prior art and provide a tool retracting device for a carton folding machine, which can adapt to the folding and forming processes of different cartons, realize automatic tool retraction structurally, and optimize and improve the tool retracting structure.

[0005] To achieve automatic tool retraction structurally, the technical solution provided by the utility model is: a tool retracting device for a carton folding machine, including a tool, a push rod, and a folding machine body. The end of the tool is connected to the folding machine body through a first rotating shaft. A limit block is arranged on the tool, and a slider is arranged on the push rod. The working height of the slider meets the working height of the limit block.

[0006] Further, the limit block is a roller, and the shape of the roller is beneficial to reducing the wear between the limit block and the slider during the rapid production process.

[0007] Further, the slider has an inclined surface, and the shape of the inclined surface is beneficial to reducing the wear between the limit block and the slider during the rapid production process.

[0008] To achieve adjustable tool retraction distance, the technical solution provided by the utility model is: a sliding groove is arranged on the push rod, the slider is arranged on the sliding groove, and the slider can be fixed on the sliding groove through a fastener.

[0009] Further, a number of holes are opened on the sliding groove, and a hole is opened on the slider. A pin is used as the fastener.

[0010] Furthermore, a plurality of threaded holes are provided on one side of the slide groove, and the fastener is a screw, and the screw is matched with the threaded hole, and the screw is tightened to squeeze and fix the slide block;

[0011] Furthermore, a plurality of threaded holes are provided on one side of the slide slot, and the fastener is a screw, and the screw is matched with the threaded hole and tightened to limit the relative movement between the slider and the slide slot;

[0012] In order to realize continuous production operation, the technical solution provided by the utility model is: a reset device is arranged on the tool along the moving direction;

[0013] Furthermore, the reset device is a spring, one end of which is connected to the cutter, and the other end of which is connected to the carton folding machine body;

[0014] Furthermore, the resetting device is a hydraulic rod, one end of which is connected to the tool via a second rotating shaft, and the other end of which is connected to the carton folding machine body via a third rotating shaft.

[0015] The advantages and beneficial effects of the utility model are as follows: by setting a limit block and a slider and adding a reset device, the tool shaft can structurally realize automatic retraction operation; the retraction length can be adjusted through the design of the slide groove, the slider and the fastener; thereby better adapting to the needs of continuous operation of the paper box forming production line, effectively preventing the paper box to be folded from being broken, and improving the finished product rate of the paper box folding and forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a knife-retracting device for a paper box forming machine proposed in the first embodiment of the utility model;

[0017] Figure 2 It is a top view of the push rod of the utility model;

[0018] Figure 3 This is a front cross-sectional view of the push rod and the slider of the utility model.

[0019] Figure 4 It is a right side sectional view of the push rod of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the knife retracting device of the paper box forming machine proposed in the second embodiment of the utility model;

[0021] In the figure: 1-cutter, 2-push rod, 3-folding machine body, 4-limiting block, 5-slider, 6-slide groove, 7-hole, 8-through hole, 9-fastener, 10-resetting device, 11-paper to be folded, 101-first rotating shaft, 102-second rotating shaft, 103-third rotating shaft. DETAILED DESCRIPTION

[0022] The following further describes the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0023] Embodiment 1

[0024] A knife retracting device for a carton folding machine includes a knife 1, a push rod 2 and a folding machine body 3. The end of the knife 1 is connected to the folding machine body 3 through a first rotating shaft 101. A limiting block 4 is arranged on the knife. A slider 5 is arranged on the push rod 2, and the working height of the slider 5 meets the working height of the limiting block 4. The limiting block 4 is a roller, and the slider 5 has an inclined surface. A chute 6 is arranged on the push rod, and the slider 5 is arranged on the chute 6. A plurality of holes 7 are formed along the inside of the chute 6 on the chute 6, and a through hole 8 is correspondingly formed on the slider 5. A pin is used as a fastener 9. A reset device 10 is arranged on the knife 1 along the moving direction. The reset device 10 is a spring. One end of the spring is connected to the knife 1, and the other end is connected to the carton folding machine body 3.

[0025] When the above-mentioned carton folding machine and knife retracting device work, determine a suitable knife retracting distance, fit the through hole 8 of the slider 5 with the holes 7 on the chute, and insert a pin to fix it. Start the machine, the push rod 2 moves towards the knife 1, and cooperates with the knife 1 to fold the paper 11 to be folded into a formed shape. When the push rod 2 continues to move towards the knife, the slider 5 will contact the roller, and then push the roller, so that the knife 1 rotates along the first rotating shaft, compresses the spring, and realizes knife retraction. When the push rod 2 moves in the reverse direction, the knife 1 is reset under the action of the spring.

[0026] Embodiment 2

[0027] A knife retracting device for a carton folding machine includes a knife 1, a push rod 2 and a folding machine body 3. The end of the knife 1 is connected to the folding machine body through a first rotating shaft 101. A limiting block 4 is arranged on the knife. A slider 5 is arranged on the push rod 2, and the working height of the slider 5 meets the working height of the limiting block 4. The limiting block 4 is a limiting rod. A chute 6 is arranged on the push rod 4, and the slider 5 is arranged on the chute 6. A plurality of internally threaded holes 7 are formed on one side of the chute 6 along the moving direction of the slider 5, and a screw is used as a fastener 9. A reset device 10 is arranged on the knife 1 along the moving direction. The reset device 10 is a hydraulic rod. One end of the hydraulic rod is connected to the knife through a second rotating shaft 102, and the other end is connected to the carton folding machine body through a third rotating shaft 103.

[0028] When the above-mentioned carton folding machine and the tool retracting device are working, determine the appropriate tool retracting distance, fit the screw with the internal thread hole 7, and squeeze and fix the slider 5; turn on the machine, the push rod 2 moves towards the tool 1, and cooperates with the tool 1 to fold the paper 11 to be folded into a formed shape; when the push rod 2 continues to move towards the tool, the slider 5 will contact the limit rod, and then push the limit rod, causing the tool 1 to rotate along the first rotating shaft, compressing the hydraulic rod, and realizing tool retraction; when the push rod 2 moves in the reverse direction, the tool 1 is reset under the action of the hydraulic rod.

[0029] Embodiment III

[0030] A tool retracting device for a carton folding machine includes a tool 1, a push rod 2 and a folding machine body 3. The end of the tool 1 is connected to the folding machine body through a first rotating shaft 101. A limit block 4 is arranged on the tool. A slider 5 is arranged on the push rod 2, and the working height of the slider 5 meets the working height of the limit block 4; the limit block 4 is a limit rod; a chute 6 is arranged on the push rod 4, the slider 5 is arranged on the chute 6, and a number of holes 7 with internal threads are opened on one side of the chute 6 along the moving direction, and a screw is used as a fastener 9; a reset device 10 is arranged on the tool 1 along the moving direction, and the reset device 10 is a hydraulic rod. One end of the hydraulic rod is connected to the tool through a second rotating shaft 102, and the other end is connected to the carton folding machine body through a third rotating shaft 103.

[0031] When the above-mentioned carton folding machine and the tool retracting device are working, determine the appropriate tool retracting distance, fit the screw with the internal thread hole 7 to limit the relative movement between the slider 5 and the chute 6; turn on the machine, the push rod 2 moves towards the tool 1, and cooperates with the tool 1 to fold the paper 11 to be folded into a formed shape; when the push rod 2 continues to move towards the tool, the slider 5 will contact the limit rod, and then push the limit rod, causing the tool 1 to rotate along the first rotating shaft, compressing the hydraulic rod, and realizing tool retraction; when the push rod 2 moves in the reverse direction, the tool 1 is reset under the action of the hydraulic rod.

[0032] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A knife retracting device for a carton folding machine, comprising a knife, a push rod and a folding machine body, characterized in that: The end of the tool is connected to the folding machine body through a first rotating shaft, a limit block is arranged on the tool, and a slider is arranged on the push rod, and the working height of the slider meets the working height of the limit block.

2. The knife retracting device of the carton folding machine according to claim 1, characterized in that: A slide groove is provided on the push rod, and the sliding block is fixed on the slide groove by a detachable fastener.

3. The knife retracting device of the carton folding machine according to claim 2, characterized in that: A resetting device is arranged in the moving direction of the tool.

4. The knife retracting device for a carton folding machine according to claim 3, characterized in that: The reset device is a spring, one end of the spring is connected to the cutter, and the other end is connected to the folder body.

5. The knife retracting device for a carton folding machine according to claim 3, characterized in that: The resetting device is a hydraulic rod, one end of which is connected to the tool through the second rotating shaft, and the other end of which is connected to the folding machine body through the third rotating shaft.

6. The knife retracting device of the carton folding machine according to claim 3, characterized in that: The fastener is a pin or a screw.

7. The knife retracting device of the carton folding machine according to claim 3, characterized in that: The limiting block is a roller.

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