Bag body opening and punching mechanism special for stringing machine

Abstract

The invention discloses a special bag body opening and punching mechanism for a stringing machine, which comprises a bag opening part and a punching part, the punching part moves relative to a bag body, the punching part is divided into a first surface punching part and a second surface punching part, each of the first surface punching part and the second surface punching part comprises a material blocking part, a punching knife and a concave template corresponding to the punching knife, the punching knife moves relative to the concave template, and a feeding gap is formed between the material blocking part and the concave template; when a bag body is punched, the punching knife and the material blocking piece enter the bag body, and the concave template is arranged outside the bag body. After the bag body is punched and when the punching knife is reset, the feeding gap is smaller than the distance between the punching knife and the concave template, the material blocking part blocks the infolding part in the bag body and prevents the infolding part from moving along with the punching knife, so that the punching knife can be completely separated from the bag body in limited displacement and reset, the punched bag body can smoothly enter the next procedure, and the punching efficiency is improved. And the problem of punching from inside to outside is solved.

Description

Technical Field

[0001] The present invention relates to an improved invention of a punching mechanism, in particular to a bag opening and punching mechanism specially used for a rope threading machine. Background Art

[0002] When processing the handbag with a hand strap, first punch two holes 26 at the bag openings of the two bag surfaces, then pass the two ends of the hand strap through the two holes on the same bag surface and fix them in the bag body 23, thus forming the hand portion of the bag body. For a bag body with an M-shaped side 27, since the side folds inward, the position of the bag surface punching coincides with the inward folded side, so the two bag surfaces must be equipped with independent punching knives, that is, one punching knife can only punch one bag surface, and cannot pass through two bag surfaces at one time, otherwise the punching knife will cut the side of the bag body.

[0003] The existing bag body folds the bag opening inward to form an inner folding portion 25, thus forming a double-layer bag opening 24, which not only increases the strength of the bag opening and the handheld portion, but also makes the edge of the bag opening smooth and beautiful. Because the inner folding portion is only a part of the bag body folded inward and is not bonded to the bag body, if the punching knife punches from the inside to the outside, when the punching knife is reset, the inner folding portion moves with the punching knife. At the same time, after the bag opening 24 is opened, the distance between the two bag surfaces is limited, so the travel of the punching knife in the bag body is also very limited, resulting in the punching knife being unable to separate from the inner folding portion 25 when resetting, so that the bag body after punching cannot leave the punching station and enter the next process. Therefore, the existing punching knife can only punch from the outside of the bag to the inside of the bag.

[0004] However, there is another problem with punching holes from the outside to the inside, that is, the waste generated by the punching holes will be left in the bag body, so it is necessary to solve the problem of cleaning the waste in the bag. Therefore, the existing bag body punching needs to be improved to meet the needs. Summary of the invention

[0005] In view of the technical problems existing in the background technology, the technical problem solved by the present invention is to provide a bag opening and punching mechanism specially used for a rope threading machine, which has stable punching effect and will not leave waste materials in the bag.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: the bag opening and punching mechanism specially used for the rope threading machine is characterized by: comprising The bag opening component includes a first material suction component and a second material suction component which are arranged opposite to each other and move toward each other or in opposite directions; and a punching component, which moves relative to the bag body, the punching component is divided into a first-side punching component and a second-side punching component, both of which include a material blocking member, a punching knife and a concave template corresponding to the punching knife, the punching knife moves relative to the concave template, and a feeding gap is provided between the material blocking member and the concave template; When punching holes in the bag body, the punching knife and the material blocking member enter the bag body, and the concave template is outside the bag body; After the bag body is punched, when the punching knife is reset, the feeding gap is smaller than the distance from the punching knife to the concave template.

[0007] The punching knife of the present invention punches holes from the inside of the bag to the outside of the bag. After the punching knife punches holes and resets, the material blocking member blocks the inner folded portion in the bag to prevent the inner folded portion from moving with the punching knife, so that the punching knife can completely separate from the bag during limited displacement and reset, so that the bag after punching can smoothly enter the next process. The present invention overcomes the difficulty of punching holes from the inside to the outside, and at the same time, the waste generated by the punching is discharged outside the bag, and there is no need to clean the waste inside the bag.

[0008] Preferably, the material blocking member moves relative to the concave template; the material blocking member is movably arranged to increase the feeding gap before entering the punching station, which is conducive to the punching component entering the punching station and avoids the feeding gap being too small, which may cause the material blocking member, the concave template and the bag body to collide. When the punching is reset, the feeding gap can be reduced, thereby reducing the moving stroke of the punching knife and separating the punching knife from the bag body.

[0009] Preferably, the material stopper is an elastic member, which can adjust the size of the feeding gap between the material stopper and the concave template, which is not only suitable for bags of different thicknesses, but also when the punching knife is reset, the elastic force of the elastic member squeezes the inner folded part to make it lean against the concave template, so that the punching knife is separated from the bag body and the concave template.

[0010] Preferably, the punching knife and the elastic member are mounted on a movable knife seat. The structure is more streamlined, and the movable knife seat moves synchronously with the punching knife and the elastic member, and the elastic member first contacts the bag opening, at which time the elastic member is pressed to fix the bag opening, which is convenient for punching. The punching knife passes through the bag body and is pressed against the concave template, and the movable knife seat moves in the opposite direction, and the punching knife retreats. At this time, the elastic member still presses the bag opening until the elastic member recovers, and at this time the punching knife has completely left the inner folding part.

[0011] Preferably, the material blocking portion of the elastic member is opposite to the position of the punching knife, and the material blocking portion of the elastic member is provided with a through hole for the punching knife to pass through. The position pressed by the elastic member is the punching position, which has better stability.

[0012] Preferably, the punching knife and the material stopper of the first-side punching component and the second-side punching component are respectively the first punching knife and the second punching knife and the first material stopper and the second material stopper, the first punching knife and the second material stopper are installed on the first moving seat, the second punching knife and the first material stopper are installed on the second moving seat, when punching, the first punching knife and the second punching knife move toward the first bag surface and the second bag surface respectively, and the first material stopper and the second material stopper move away from the first bag surface and the second bag surface respectively, when the punching knife is reset, the first material stopper and the second material stopper move toward the first bag surface and the second bag surface respectively, and approach or push the first bag surface and the second bag surface. After the two punching knives complete the punching, they move toward each other, and the two material blocking members move in the opposite direction, that is, toward their respective concave templates. The material blocking members block the inner folding portion and push the inner folding portion toward the concave template. The inner folding portion and the punching knife move in the opposite direction. The sum of the two movements is equivalent to twice the movement of the punching knife, so that the punching knife can quickly disengage from the inner folding portion. At the same time, the movement stroke of the punching knife can be further shortened. The limited space in the bag is also sufficient for the punching knife to move. The layout is exquisite and interconnected, which saves space.

[0013] Preferably, the first moving seat and the second moving seat are provided with a first rack and a second rack respectively, the first rack and the second rack are arranged one above the other and a gear meshing therebetween is provided, and the gear is connected to a power member driving the gear to rotate. The first moving seat and the second moving seat can be driven to move simultaneously by a power member, which not only reduces the cost, but also has a delicate structure and occupies a small space.

[0014] Preferably, the first moving seat and the second moving seat are slidably arranged on a linear guide rail, and the linear guide rail is mounted on a mounting seat to improve the stability of movement.

[0015] Preferably, the mounting seat can be lifted up and down and adjusted longitudinally on the frame. The lifting of the mounting seat causes the punching component to lift relative to the bag body, which is suitable for a vertically arranged bag body, and adjusts the longitudinal position of the punching knife according to the punching position.

[0016] Preferably, the material-blocking end face of the material-blocking member is an arc surface; the arc surface is smooth, and damage to the surface of the bag body is avoided when the material-blocking member contacts the bag body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a front view of the first embodiment of the punching component of the present invention.

[0019] Figure 3 It is a rear view of the first embodiment of the punching component of the present invention.

[0020] Figure 4This is a front view of the second embodiment of the punching component of the present invention.

[0021] Figure 5 It is a rear view of the second embodiment of the punching component of the present invention.

[0022] Figure 6 Schematic diagram of the bag body. DETAILED DESCRIPTION

[0023] The following describes the details and working principles of the embodiments and examples of the present invention in conjunction with the accompanying drawings. In the figure, the X-axis is horizontal, the Y-axis is longitudinal, and the Z-axis is vertical, which is also the up-down direction; the bag opening and punching mechanism dedicated to the rope threading machine includes a bag opening component 1 and a punching component 2. Because two holes are to be punched on one bag surface, two groups of punching components 2 are required. It is better to set at least two groups of bag opening components. Three groups are provided in the figure. The bag opening component 1 includes a first suction member 3 and a second suction member 4 arranged opposite to each other, that is, the bag body is between the first suction member and the second suction member, the first material discharge member faces the first bag surface, and the second suction member faces the second bag surface. The first suction member and the second suction member move toward each other or in the opposite direction. When the bag body reaches the punching station, the first suction member and the second suction member move toward the bag body. At this time, the two move toward each other. After the two absorb the first bag surface and the second bag surface of the bag body respectively, the two move in the opposite direction and move away from each other to open the bag mouth. The punching component moves relative to the bag opening. If the bag body of the punching station is in a vertical state, the punching component will rise and fall relative to the bag opening. If the bag body of the punching station is in a horizontal state, the punching component will move horizontally relative to the bag opening. The following takes the vertical bag body as an example. A group of punching components is divided into a first-side punching component 21 and a second-side punching component 22, both of which include a material blocking component 7, a punching knife 8 and a concave template 5 corresponding to the punching knife. The punching knife moves relative to the concave template, and there is a feeding gap 6 between the material blocking component 7 and the concave template; when punching a hole in the bag body, the punching knife 8 and the material blocking component 7 enter the bag body, and the concave template 5 is outside the bag body; after the bag body is punched, when the punching knife is reset, the feeding gap 6 is smaller than the distance from the punching knife to the concave template, that is, when the bag opening 24 of the bag body of the punching station is opened, the punching component 2 moves downward, the bag opening enters the feeding gap 6, the punching knife 8 and the material blocking component 7 enter the bag body, and the concave template is outside the bag body. If the material blocking component 7 cannot move relative to the concave template 5, then the feeding gap must be smaller than the distance from the punching knife to the concave template. If the blocking member can move relative to the concave template, the feeding gap can also be larger than the distance from the punching knife to the concave template. After the punching member is in place, the punching knife 8 moves toward the concave template 5, passes through the bag body and is pressed together with the concave template to achieve punching, and then the punching knife retreats and resets. During the resetting process, the blocking member 7 blocks the bag body, and the punching knife retreats until the distance between it and the concave template is larger than the feeding gap, which means that the punching knife is completely separated from the bag body. Thereafter, the punching member moves up and resets, and the waste generated by the punching is outside the bag body. The punching member after moving up is above the bag body, and the bag body is not restricted by the punching member and smoothly enters the next process.

[0024] The blocking end surface of the blocking member 7 is preferably an arc surface, and the protruding part of the arc surface faces the concave template 5. The arc surface is smooth and will not scratch the bag body. The blocking member 7 can be an elastic member, such as a spring, a spring sheet, etc., even if it cannot move laterally, because of its elasticity, when the bag mouth is thick, the bag body can also be squeezed into the feeding gap. Of course, the best feeding gap 6 is slightly larger than the thickness of the bag body to reduce the friction between the blocking member and the bag body surface.

[0025] In the first embodiment, the material blocking member 7 is a spring sheet, and the material blocking member moves relative to the concave template 5. When the punching component 2 moves downward, the feed gap 6 can be enlarged, which is conducive to the bag mouth entering the feed gap and avoids the feed gap being too small and the collision between the material blocking member, the concave template and the bag body. After the material blocking member 7 enters the bag body, the material blocking member can move toward the concave template to reduce the feed gap 6. This not only fixes the bag mouth and is conducive to punching, but also shortens the retreat stroke of the punching knife. That is, after punching, when the punching knife 8 retreats so that the distance between it and the concave template is greater than the distance between the feed gap, the punching knife has been separated from the bag body, and the punching knife will not hinder the bag body. In this way, the movement stroke of the hole knife is shortened, and the limited space in the bag is enough for the punching knife to separate from the bag body. The material blocking member moves relative to the concave template, and can be driven by an independent power, or it can share power with the punching knife. This makes the structure more compact and saves costs. Figure 2 and 3 In the embodiment, the punching knife 8 and the elastic member 7 are installed on the movable knife holder 9, and the movable knife holder moves synchronously with the punching knife and the elastic member. The material blocking part of the elastic member is opposite to the position of the punching knife. The material blocking part of the elastic member is provided with a through hole for the punching knife to pass through. The position pressed by the elastic member is the position of the punching, which can stably grasp the size of the feeding gap of the punching part and ensure that the punching knife can be separated from the inner folding part of the bag body when it is reset. When the movable knife holder 9 moves toward the concave template 5, the elastic member 7 first contacts the bag body. As the movable knife holder continues to move, the elastic member presses the bag opening on the concave template to fix the bag opening. At this time, the elastic sheet is pressed, and the punching knife passes through the through hole to punch the bag body. After punching, the movable knife holder moves in the opposite direction, and the punching knife retreats. The elastic member still presses the bag opening until the elastic member recovers. At this time, the punching knife has completely left the inner folding part 25.

[0026] In the second embodiment, the material blocking member 7 adopts a material blocking plate or a material blocking block, the punching knives and material blocking members of the first surface punching member 21 and the second surface punching member 22 are respectively the first punching knife 23 and the second punching knife 24 and the first material blocking member 13 and the second material blocking member 14, the first punching knife and the second material blocking member are installed on the first moving seat 15, and the second punching knife and the first material blocking member are installed on the second moving seat 16. When punching, the first moving seat and the second moving seat move in opposite directions and away from each other, the first punching knife and the second punching knife move toward the first bag surface and the second bag surface respectively, the first material blocking member 13 moves toward the second bag surface with the second moving seat 16, and the second material blocking member 14 moves toward the first bag surface with the first moving seat 15, that is, the first blocking member The material piece and the second material blocking piece are respectively away from the first bag surface and the second bag surface; when the punching knife is reset, the first movable seat and the second movable seat move toward each other, the two are close to each other, the first punching knife 23 and the second punching knife 24 are close to each other, the first material blocking piece 13 and the second material blocking piece 14 move toward the first bag surface and the second bag surface respectively, the two are away from each other, and are close to or push the first bag surface and the second bag surface, that is, the material blocking piece 7 blocks the inner folding part 25 and pushes the inner folding part to move toward the concave template 5, the inner folding part 25 of the bag body and the punching knife 7 move in opposite directions, then the sum of the two movements is equivalent to twice the movement of the punching knife, so that the punching knife quickly disengages from the inner folding part 25, and at the same time can shorten the movement stroke of the punching knife, and the limited space in the bag is sufficient for the punching knife to move.

[0027] The lateral movement of the movable knife seat or the first movable seat and the second movable seat can be driven by a cylinder or a motor combined with a screw mechanism, a cam mechanism, a connecting rod mechanism, etc. In order to make the structure more streamlined, occupy less space, and reduce costs, the movement of the punching knife of the first surface punching component 21 and the second surface punching component 22 can use a power source. Figure 5 The first movable seat 15 and the second movable seat 16 are respectively provided with a first rack 17 and a second rack 18. The first rack and the second rack are arranged up and down and a gear 19 meshing therebetween is provided. The gear is connected to a power member driving the gear to rotate. When the power member drives the gear to rotate clockwise, the first rack moves to the left and the second rack moves to the right. Conversely, when the gear rotates counterclockwise, the first rack moves to the right and the second rack moves to the left. A power member can simultaneously drive the first movable seat and the second movable seat to move, which not only reduces the cost but also has a delicate structure and occupies a small space. The first movable seat 15 and the second movable seat 16 are slidably arranged on a linear guide rail 11, and the linear guide rail is installed on the mounting seat 10 and moves along the linear guide rail to improve the stability of the lateral movement of the first movable seat and the second movable seat. The mounting seat 10 can be adjusted longitudinally on the frame 12, that is, the longitudinal position of the punching knife is adjusted according to the bag body specifications and the punching position, see the attached Figure 1A longitudinal guide rail is installed on the frame, and the mounting seat 10 is slidably set on the guide rail, so that the longitudinal position of the mounting seat on the frame can be adjusted; the lifting and lowering of the mounting seat on the frame, that is, the lifting and lowering of the punching component relative to the bag body, can also be driven by a cylinder or a motor combined with a screw mechanism, a cam mechanism, a connecting rod mechanism, etc.

Claims

1. A bag opening and punching mechanism specially used for a rope threading machine, characterized in that: Included The bag opening component includes a first material suction component and a second material suction component which are arranged opposite to each other and move toward each other or in opposite directions; and a punching component, which moves relative to the bag body, the punching component is divided into a first-side punching component and a second-side punching component, both of which include a material blocking member, a punching knife and a concave template corresponding to the punching knife, the punching knife moves relative to the concave template, and a feeding gap is provided between the material blocking member and the concave template; When punching holes in the bag body, the punching knife and the material blocking member enter the bag body, and the concave template is outside the bag body; After the bag body is punched, when the punching knife is reset, the feeding gap is smaller than the distance from the punching knife to the concave template.

2. The bag opening and punching mechanism for a rope threading machine according to claim 1, characterized in that: The material blocking member moves relative to the concave plate.

3. The bag opening and punching mechanism for a rope threading machine according to claim 1 or 2, characterized in that: The material blocking member is an elastic member.

4. The bag opening and punching mechanism for a rope threading machine according to claim 3, characterized in that: The punching knife and the elastic member are installed on the movable knife seat.

5. The bag opening and punching mechanism for a rope threading machine according to claim 4, characterized in that: The material blocking portion of the elastic member is opposite to the position of the punching knife, and the material blocking portion of the elastic member is provided with a through hole for the punching knife to pass through.

6. The bag opening and punching mechanism for a rope threading machine according to claim 2, characterized in that: The punching knife and the material stopper of the first-side punching component and the second-side punching component are respectively the first punching knife and the second punching knife and the first material stopper and the second material stopper; the first punching knife and the second material stopper are mounted on the first moving seat, and the second punching knife and the first material stopper are mounted on the second moving seat; when punching, the first punching knife and the second punching knife move toward the first bag surface and the second bag surface respectively, and the first material stopper and the second material stopper move away from the first bag surface and the second bag surface respectively; when the punching knife is reset, the first material stopper and the second material stopper move toward the first bag surface and the second bag surface respectively, and approach or push the first bag surface and the second bag surface.

7. The bag opening and punching mechanism for a rope threading machine according to claim 6, characterized in that: The first moving seat and the second moving seat are respectively provided with a first rack and a second rack. The first rack and the second rack are arranged up and down with a gear meshing therebetween. The gear is connected to a power member driving the gear to rotate.

8. The bag opening and punching mechanism for a rope threading machine according to claim 7, characterized in that: The first moving seat and the second moving seat are slidably arranged on a linear guide rail, and the linear guide rail is installed on a mounting seat.

9. The bag opening and punching mechanism for a rope threading machine according to claim 8, characterized in that: The mounting seat can be lifted up and down and adjusted longitudinally on the frame.

10. The bag opening and punching mechanism for a rope threading machine according to claim 1 or 2, characterized in that: The material blocking end surface of the material blocking member is an arc surface.

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