Edge folding and pressing device and bag opening machine

Abstract

The utility model discloses an edge folding and pressing device and a bag opening machine, and relates to the technical field of bag opening machines. The device specifically comprises a pressing frame, a clamping module, a push-pull module and a support, the pressing frame is connected with the support, the clamping module is in transmission connection with the support, the clamping module is used for clamping the folded edge from the lower side, the push-pull module is arranged between the clamping module and the pressing frame, the push-pull module is in transmission connection with the support, and the push-pull module is used for clamping the folded edge from the lower side. The push-and-pull module is used for pushing the folded edge from the horizontal direction and folding the folded edge, the push-and-pull module comprises a push-and-pull plate and a transverse pushing mechanism, the push-and-pull plate is connected with the support in a sliding mode, and the transverse pushing mechanism is connected with the support and the push-and-pull plate and used for driving the push-and-pull plate to move. The push-and-pull plate is adopted for supporting folding of the folded edge, so that the bag opening can be supported in the folding process of the folded edge, the bag opening is prevented from being damaged due to excessive folding force, the folded edge is kept flat after being folded, and it is guaranteed that the shape of the manufactured bag opening is regular and flat.

Description

Technical Field

[0001] The utility model relates to the technical field of bag opening machines, and specifically provides a folding and pressing device and a bag opening machine. Background Art

[0002] The bag opening machine is used to process and make bag lips. Making bag lips mainly includes several steps, such as cutting, folding hems and sewing. Cutting is to cut an opening of a certain size on the fabric. When the opening is cut, the remaining fabric at the opening position is the hem. The hem is usually folded to overlap with the fabric, and then the fabric and the hem are sewn to form a bag lip with a smooth edge. Existing bag opening machines usually use a hem module to reflect the hem. The hem module moves from top to bottom through an L-shaped structure, so that the hem is reflected downward. The L-shaped structure then moves toward the edge of the bag opening, so that the hem is folded toward the direction of the fabric, so that the hem is parallel to the fabric. At this time, the hem can be pressed upward from the bottom through the clamping module, so that the hem is pressed from the bottom to other positions of the fabric or the frame, so as to fix the hem.

[0003] However, after the hem is folded, it is necessary to sew the hem to the fabric through a sewing mechanism. Therefore, when the press frame and the clamping module clamp the hem from the upper and lower sides, a part of the hem folding position needs to be located outside the press frame and the clamping module to facilitate the sewing work of the sewing mechanism. Therefore, when the hem folding module folds the hem in the horizontal direction, the hem folding module will never rest against the press frame or the lower pressing plate in the horizontal direction. Therefore, there is no restraint mechanism when the hem folding module moves. When the hem folding module moves, it is very likely to squeeze the bag opening, thereby causing the bag opening to crack and damage. Utility Model Content

[0004] The utility model provides a folding pressing device and a bag opening machine, which are used to solve the problem that the folding module may squeeze the bag opening when moving, thereby causing the bag opening to crack and be damaged.

[0005] The technical solution of the utility model is as follows:

[0006] A folding clamping device comprises a pressing frame, a clamping module, a push-pull module and a bracket, wherein the pressing frame is connected to the bracket, the clamping module is arranged at the lower side of the pressing frame, the clamping module is connected to the bracket in a transmission manner, the clamping module is used to clamp the folding from the lower side, the push-pull module is arranged between the clamping module and the pressing frame, the push-pull module is connected to the bracket in a transmission manner, the push-pull module is used to push the folding from the horizontal direction, the push-pull module comprises a push-pull plate and a transverse pushing mechanism, the push-pull plate is slidably connected to the bracket, the transverse pushing mechanism is connected to the bracket and the push-pull plate, and the transverse pushing mechanism is used to drive the push-pull plate to move.

[0007] In this solution, the press frame and the clamping module can cooperate to clamp the hem from both sides, while the push-pull module assists in the hem folding work before the press frame and the clamping module clamp the hem. When the hem folding module needs to fold, the push plate moves toward the hem folding module, and the edge of the push-pull plate is flush with the bag opening. When the hem folding module moves to the bag opening, the hem folding module will lean against the push-pull plate. Under the blocking effect of the push-pull plate, the hem folding module cannot squeeze the bag opening, thus avoiding the hem folding module squeezing the bag opening, thereby solving the problem of the bag opening being damaged and deformed due to squeezing by the hem folding module.

[0008] Preferably, at least two clamping modules are included, and a push-pull module is respectively arranged on the upper side of each clamping module.

[0009] In this solution, each clamping module is used to press the folded edge upward from the bottom, and cooperates with the pressing frame or push-pull plate on the upper side to clamp the folded edge from the upper and lower sides. A push-pull module is set on the upper side of each clamping module, and the folded edge can be pushed from the side by each push-pull module, so as to cooperate with the folding module of the bag opening machine to realize the folding of each folded edge at the bag opening position.

[0010] Preferably, the top surface of the push-pull plate is a plane, and the pressing frame abuts against the top surface of the push-pull plate.

[0011] In this solution, the top surface of the push-pull plate can be used to cooperate with the pressing frame to press the cloth, so there is no need to set a separate plane on the bracket to cooperate with the pressing frame, which reduces the thickness and number of parts of the entire folding and pressing module.

[0012] Preferably, the push-pull plate is provided with a first bend, and the transverse pushing mechanism is connected to the first bend.

[0013] In this solution, providing the first bend makes it easier to install the lateral pushing mechanism and can reduce the difficulty of installation.

[0014] Preferably, the push-pull plate is provided with a second bend, and the second bend is provided on a side for pressing the cloth.

[0015] In this solution, setting the second folding edge can improve the strength of the push-pull plate, make the thickness of the push-pull plate lower, avoid excessive distance between the lower pressing plate and the pressing frame during the movement of the push-pull plate, and thus avoid loosening of the folding edge.

[0016] Preferably, lateral pushing mechanisms are respectively provided on both sides of the push-pull plate.

[0017] In this solution, lateral pushing mechanisms are respectively provided on both sides of the push-pull plate so that the forces on both sides of the push-pull plate are the same, thereby preventing the push-pull plate from being displaced when it is displaced, thereby improving the position accuracy of the push-pull plate.

[0018] Preferably, the bracket is provided with a guide groove, and the push-pull plate is slidably connected to the guide groove.

[0019] In this solution, the push-pull plate is slidably connected to the guide groove. The guide groove is provided to constrain the sliding direction of the push-pull plate and prevent the push-pull plate from deflecting upward under the pressure of the lower pressure plate.

[0020] Preferably, third bends are respectively provided on both sides of the push-pull plate, and the third bends are slidably connected to the guide grooves.

[0021] In this solution, the third bend is provided to improve the strength of both sides of the push-pull plate, and to avoid deformation of the portion of the push-pull plate in contact with the guide groove, which may cause the position of the push-pull plate to shift.

[0022] Preferably, the clamping module includes a lower pressing plate and a second lifting mechanism, the lower pressing plate is movably connected to the bracket through the second lifting mechanism, the second lifting mechanism is used to drive the lower pressing plate to move, and the guide groove is arranged on the second lifting mechanism.

[0023] In this solution, the guide groove is arranged on the second lifting mechanism, so as to achieve the purpose of simplifying the structure.

[0024] The utility model also provides a bag opening machine, which adopts the above-mentioned folding and pressing device.

[0025] In this solution, the above-mentioned folding edge pressing device can make the folding edge folded smoothly, ensure that the bag opening remains flat after the folding edge is folded, avoid the bag opening being squeezed by the folding edge module, and thus ensure the accurate shape of the bag lip.

[0026] Beneficial effects of the utility model:

[0027] The utility model adopts a push-pull plate to provide support for the folding of the folded edge, so that the bag mouth can be supported during the folding process, avoiding the bag mouth from being damaged by excessive folding force, and keeping the folded edge flat after folding, thereby ensuring that the bag mouth has a regular and flat shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solution of the present utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of embodiment 1;

[0030] Figure 2 is a cross-sectional view of embodiment 1;

[0031] Figure 3 for Figure 1 A partial enlarged view of the middle part;

[0032] Figure 4 It is a schematic diagram of the structure of the push-pull plate and the lateral pushing mechanism in the first embodiment;

[0033] Figure 5 It is a cross-sectional view of the pressing frame, the bearing plate, the push-pull plate and the lower pressing plate in the second embodiment.

[0034] In the above drawings, the corresponding reference numerals are as follows:

[0035] 1. Bracket; 2. Horizontal pushing mechanism; 3. Push-pull plate; 4. Pressing frame; 5. Second lifting mechanism; 6. Lower pressing plate; 7. Guide groove; 8. Third bend; 9. Second bend; 10. First bend; 11. Load-bearing plate. DETAILED DESCRIPTION

[0036] In conjunction with the accompanying drawings, the technical solution of the present utility model is clearly and completely explained through the specific implementation methods of the embodiments of the present utility model.

[0037] Embodiment 1.

[0038] like Figure 1 and Figure 2 As shown, the first embodiment provides a folding pressing device, including a pressing frame 4, a push-pull plate 3, a lower pressing plate 6 and a bracket 1. The pressing frame 4 is used to press the cloth. The bracket 1 is provided with a first lifting mechanism. The pressing frame 4 is connected to the first lifting mechanism, and the up and down movement of the pressing frame 4 is controlled by the first lifting mechanism. The bracket 1 is also provided with a second lifting mechanism 5. The lower pressing plate 6 is connected to the second lifting mechanism 5. The second lifting mechanism 5 is used to control the up and down movement of the lower pressing plate 6. The lower pressing plate 6 is arranged at the lower side of the pressing frame 4. The lower pressing plate 6 can cooperate with the pressing frame 4 to press the folding. The bracket 1 is also provided with a lateral pushing mechanism 2. The push-pull plate 3 is connected to the lateral pushing mechanism 2. The push-pull plate 3 is arranged between the pressing frame 4 and the lower pressing plate 6. The lateral pushing mechanism 2 is used to push the push-pull plate 3 so that the push-pull plate 3 slides between the pressing frame 4 and the lower pressing plate 6. When the push-pull plate 3 is in a working position, one side of the push-pull plate 3 protrudes from one side of the pressing frame 4 and the lower pressing plate 6, so that the folded edge can be folded downward with the protruding side of the push-pull plate 3, so that the folded edge can remain flat after folding, ensuring that the bag lip remains flat.

[0039] The lower pressing plate 6 and the second lifting mechanism 5 constitute a clamping module. The second lifting mechanism 5 can drive the lower pressing plate 6 to move up and down, so that the lower pressing plate 6 can press the folded edge against the bottom surface of the pressing frame 4 or the push-pull plate 3.

[0040] The push-pull plate 3 and the lateral pushing mechanism 2 constitute a push-pull module, which is used to provide support for the bag opening when the hem is folded, so as to prevent the bag opening from being damaged by the force from the hem folding module. After the hem is folded and the clamping module clamps the hem, the push-pull plate 3 of the push-pull module moves away from the bag opening, thereby preventing the push-pull plate 3 from being away from the bag opening and preventing the push-pull plate 3 from affecting the sewing mechanism in sewing the bag opening.

[0041] The top surface of the push-pull plate 3 is a plane, and the plane can cooperate with the pressing frame 4 to press the cloth.

[0042] like Figure 4 As shown, the push-pull plate 3 is provided with a first bend 10, the first bend 10 is bent toward the upper side of the push-pull plate 3, and the first bend 10 is perpendicular to the top surface of the push-pull plate 3. One end of the lateral pushing mechanism is connected to the first bend 10, and the other end of the lateral pushing mechanism is connected to the bracket 1. When the lateral pushing mechanism is extended or shortened, it can push the push-pull plate 3 to move in the horizontal direction.

[0043] The lateral pushing mechanism can be a pneumatic cylinder or an electric cylinder.

[0044] like Figure 3 As shown, the bracket 1 is provided with a guide groove 7, and the push-pull plate 3 is slidably connected with the guide groove 7, and the direction of the guide groove 7 is horizontal. Guide grooves 7 are provided on both sides of the push-pull plate 3, and third bends 8 are provided on both sides of the push-pull plate 3, respectively, to enhance the strength of both sides of the push-pull plate 3 through the third bends 8. The third bends 8 are bent upward, and the third bends 8 are also used to increase the height of the two sides of the push-pull plate 3, so as to facilitate the installation of the push-pull plate 3.

[0045] The push-pull plates 3 are arranged in pairs, that is, the number of the push-pull plates 3 is two or four. When the number of the folded edges is two, two push-pull plates 3 are arranged; when the number of the folded edges is four, four push-pull plates 3 are arranged.

[0046] The push-pull plate 3 is also provided with a second bend 9, which is located on a side away from the first bend 10, and is bent downward. The second bend 9 is used to increase the strength of the side of the push-pull plate 3 to prevent the side of the push-pull plate 3 used to support the folding of the hem from deforming, thereby ensuring that the fabric is flat after the folding of the hem. The second bend 9 is bent downward to make it easier to cooperate with the lower pressing plate 6 to press the hem.

[0047] The first lifting mechanism includes a slide rail, a slider and a cylinder, one end of the cylinder is connected to the bracket 1, and the other end is connected to the pressing frame 4, the slide rail is connected to the bracket 1, the slider is slidably connected to the slide rail, and the slider is fixedly connected to the pressing frame 4. The slide rail is vertically arranged so that the pressing frame 4 can move up and down in the vertical direction, thereby achieving compression of the cloth.

[0048] In the first lifting mechanism, the air cylinder can be replaced by an electric cylinder. The combination of the slide rail and the slider can be replaced by a guide rod and a guide hole. For example, the guide rod is fixed on the bracket 1, and the guide hole is set on the pressing frame 4. The guide hole of the pressing frame 4 is sleeved on the guide rod. The guide rod is set vertically to constrain the moving direction of the pressing frame 4 so that the pressing frame 4 moves in the vertical direction.

[0049] The second lifting mechanism 5 includes a guide rod, a guide hole and a cylinder. The bottom end of the guide rod is connected to the top surface of the lower pressing plate 6. The guide hole is provided in the bracket 1. The two ends of the cylinder are respectively connected to the bracket 1 and the guide rod. The cylinder directly drives the guide rod to move, thereby driving the lower pressing plate 6 to move. It is more convenient to install the cylinder by using the cylinder to drive the guide rod instead of directly driving the lower pressing plate 6.

[0050] Embodiment 2.

[0051] The second embodiment provides a folding and pressing device. Different from the first embodiment, the present application further includes a bearing plate 11 , and the bearing plate 11 is arranged between the pressing frame 4 and the push-pull plate 3 .

[0052] like Figure 5 As shown, the pressing frame 4 cooperates with the carrying plate 11 to press the fabric, and the push-pull plate 3 is arranged at the lower side of the carrying plate 11. The push-pull plate 3 can protrude from one side of the carrying plate 11 and the lower pressing plate 6 under the action of the lateral pushing mechanism, thereby providing support for the folding of the hem. After the hem is folded, it can be retreated between the carrying plate 11 and the lower pressing plate 6 under the action of the lateral pushing mechanism to avoid blocking the sewing mechanism from sewing the hem with the fabric.

[0053] Embodiment three.

[0054] The third embodiment provides a bag opening machine, which adopts the folding and pressing device described in the first or second embodiment.

[0055] The bag opening machine can be provided with a folding module, a sewing head and a laser cutting head. The laser cutting head is used to cut the cloth pressed by the folding pressing module, and process the opening and folding on the cloth. When the folding is turned, the push-pull plate 3 can be used as a support to prevent the folding module from squeezing the bag opening and causing damage to the bag opening, so that the bag opening remains flat after the folding is turned. After the folding is completed, the push-pull plate 3 is retracted, and the folding and the cloth can be sewn by the sewing head. During the sewing process, the push-pull plate 3 will not hinder the sewing work of the sewing head.

Claims

1. A folding and pressing device, characterized in that: The invention comprises a pressing frame (4), a clamping module, a push-pull module and a bracket (1); the pressing frame (4) is connected to the bracket (1); the clamping module is arranged at the lower side of the pressing frame (4); the clamping module is connected to the bracket (1) in a transmission manner; the clamping module is used to clamp the folded edge from the lower side; the push-pull module is arranged between the clamping module and the pressing frame (4); the push-pull module is connected to the bracket (1) in a transmission manner; the push-pull module is used to push the folded edge from the horizontal direction; the push-pull module comprises a push-pull plate (3) and a transverse pushing mechanism (2); the push-pull plate (3) is slidably connected to the bracket (1); the transverse pushing mechanism (2) is connected to the bracket (1) and the push-pull plate (3); and the transverse pushing mechanism (2) is used to drive the push-pull plate (3) to move.

2. A folding and pressing device according to claim 1, characterized in that: It comprises at least two clamping modules, and a push-pull module is respectively arranged on the upper side of each clamping module.

3. The folding and pressing device according to claim 1, characterized in that: The top surface of the push-pull plate (3) is a plane, and the pressing frame (4) abuts against the top surface of the push-pull plate (3).

4. The folding and pressing device according to claim 1, characterized in that: The push-pull plate (3) is provided with a first bend (10), and the transverse pushing mechanism is connected to the first bend (10).

5. The folding and pressing device according to claim 1, characterized in that: The push-pull plate (3) is provided with a second bend (9), and the second bend (9) is arranged on a side for pressing the folded edge.

6. The folding and pressing device according to claim 1, characterized in that: Transverse pushing mechanisms are respectively arranged on both sides of the push-pull plate (3).

7. The folding and pressing device according to claim 1, characterized in that: The bracket (1) is provided with a guide groove (7), and the push-pull plate (3) is slidably connected to the guide groove (7).

8. The folding and pressing device according to claim 7, characterized in that: The push-pull plate (3) is provided with a third bend (8) on both sides, and the third bend (8) is slidably connected to the guide groove (7).

9. The folding and pressing device according to claim 7, characterized in that: The clamping module comprises a lower pressing plate (6) and a second lifting mechanism (5); the lower pressing plate (6) is movably connected to the bracket (1) via the second lifting mechanism (5); the second lifting mechanism (5) is used to drive the lower pressing plate (6) to move; and the guide groove (7) is arranged on the second lifting mechanism (5).

10. A bag opening machine, characterized in that: It comprises the folding and pressing device as described in any one of claims 1 to 9.

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