Folding knife structure of a bag opener

Abstract

The utility model provides a kind of folding knife structure of bag opener, belong to bag opener technical field.It solves the technical problem of folding knife spare parts of large weight and space occupation of the folding knife structure of existing bag opener.The folding knife structure of this bag opener, bag opener includes two mobile seats that can move front and back or back to each other, and the mobile seat is connected to the edge folding support, folding knife structure includes two installation plates that are horizontally arranged in strip shape along left and right direction, two the lower part of mobile seat is fixed in two installation plate respectively, several comb tooth plates are arranged in interval along left and right direction on two installation plates, the comb tooth plate is in strip shape, and comb tooth plate is arranged along upper and lower direction, the upper part of this comb tooth plate is detachably fixed on the installation plate, the lower part of this comb tooth plate has the comb tooth that is bent towards front and back direction.The utility model can realize multistage length adjustment by multiple comb tooth plate combination, greatly reduce the weight and space occupation of folding knife spare parts.

Description

Technical Field

[0001] This utility model belongs to the field of bag opening machine technology, and relates to a folding blade structure for a bag opening machine. Background Technology

[0002] A pocket opening machine is a special sewing machine for sewing the opening of pockets in clothing. When the pocket opening machine is working, it first cuts the pocket seam on the surface of the fabric, and then folds and clamps the free fabric on both sides of the pocket seam through the folding mechanism for subsequent sewing to form a pocket.

[0003] For example, patent application publication number CN202421843765.7 discloses a bag opening folding device for a bag opening machine, including a folding mechanism and a material fixing mechanism; the folding mechanism includes two X-axis inserts and two Y-axis inserts, and an outer pressure frame is provided with a folding edge pressure plate that cooperates with the Y-axis folding blade; the Y-axis folding blade includes a vertical part and a bending part, the bending part is composed of evenly spaced tooth-shaped protrusions; the side of the folding edge pressure plate corresponding to the bending part of the Y-axis folding blade is composed of evenly spaced tooth-shaped protrusions, the tooth-shaped protrusions of the bending part and the tooth-shaped protrusions of the folding edge pressure plate are staggered, and when the folding edge pressure plate moves towards the bending part, the tooth-shaped protrusions of the folding edge pressure plate can be embedded in the gap between the tooth-shaped protrusions of the bending part.

[0004] The above structure still has some shortcomings: when the length of the pocket needs to be adjusted, the entire folding blade needs to be replaced, so a variety of different sizes of folding blades need to be prepared, resulting in a large number of spare parts, heavy weight, and large space occupation. Summary of the Invention

[0005] This utility model addresses the aforementioned problems in existing technologies by providing a folding blade structure for a bag opener. The technical problem this utility model aims to solve is that the folding blade spare parts of existing bag openers are heavy and take up a lot of space.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A folding blade structure for a bag opening machine, the bag opening machine including a folding edge support and two movable seats that can move forward and backward or backward. The movable seats are connected to the folding edge support. The folding blade structure includes two horizontally arranged strip-shaped mounting plates in the left-right direction. The two mounting plates are respectively fixed to the lower part of the two movable seats. Each mounting plate is provided with a plurality of comb plates arranged at intervals in the left-right direction. The comb plates are strip-shaped and arranged in the up-down direction. The upper part of the comb plate is detachably fixed to the mounting plate, and the lower part of the comb plate has comb teeth that bend in the front-back direction.

[0008] The movable seat drives the folding blade structure to open and close, achieving the folding step. Two mounting plates are fixed to the lower part of the two movable seats. Several vertically oriented, sheet-like comb plates are also installed. The upper parts of these comb plates are detachably fixed to the mounting plates and arranged at intervals. The lower parts of the comb plates extend downwards and have comb teeth that bend forward and backward. The upper comb teeth of multiple sequentially arranged comb plates form a continuous comb structure, facilitating coordination with the comb teeth on the existing folding pressure plate during the bag opening process to achieve stable clamping of the fabric. This ensures the quality of the opening mechanism. Furthermore, when the length of the pocket needs to be changed in the left-right direction, the user only needs to add or remove the outermost comb plates in the left-right direction based on the required increase or decrease in pocket length. This ensures that the overall length of the comb plates on the mounting plate meets the new pocket size requirements. The narrow width of the strip-shaped comb plates facilitates precise adjustment. Therefore, users do not need to prepare multiple one-piece folding knife parts of different sizes; they only need to configure multiple comb plates and combine them to achieve multi-level adjustments, greatly reducing the weight and space occupied by spare folding knife parts.

[0009] In the folding knife structure of the bag opening machine described above, the upper part of the comb plate is bent horizontally to form an inverted L-shape. The upper part of the comb plate is vertically attached to the mounting plate and fixed to the mounting plate by a through connector. In this way, the upper part of the comb plate can form a large-length contact with the surface of the mounting plate, improving the positional stability of the comb plate after it is fixed to the mounting plate by the connector, and ensuring the positional accuracy and stability of the comb plate.

[0010] In the folding knife structure of the bag opening machine described above, the upper or lower side of the mounting plate has several strip-shaped positioning grooves arranged along the front-to-back direction, and these positioning grooves are spaced apart along the left-to-right direction. The upper part of the comb plate is positioned and embedded in the positioning grooves. These positioning grooves provide positioning for the upper part of the comb plate, making the positioning of the comb plate more convenient and accurate. Simultaneously, the inner wall of the positioning grooves provides a limiting effect during operation, ensuring the stability of the installed comb plate position.

[0011] In the folding blade structure of the bag opening machine described above, the upper part of the comb plate has an integrally formed reinforcing boss protruding upwards or downwards, and the connecting member vertically penetrates the reinforcing boss. This gives the reinforcing boss a larger vertical dimension, which helps to prevent the comb plate from deforming due to the clamping force exerted on the surface of the comb plate when the connecting member is tightened, thus affecting the positional accuracy of the lower part.

[0012] In the folding knife structure of the bag opening machine described above, one end of the positioning groove is forward or backward, and the upper end face of the comb plate abuts against the inner wall of the other end of the positioning groove in the front-back direction. This facilitates the comb plate to slide horizontally into the positioning groove from one end in the front-back direction. When the user finds that the comb plate is difficult to slide further, the surface is in place and the connector can be installed. Operation can be carried out without visual observation, making installation convenient and ensuring installation accuracy.

[0013] In the folding knife structure of the bag opener described above, the edge of the upper end face of the comb plate is rounded. This allows for easy installation when embedding the positioning groove in the upper part of the comb plate; only a rough alignment is needed before it slides accurately into the groove under the guidance of the rounded corners.

[0014] In the folding knife structure of the bag opening machine described above, the upper part of the comb plate has a vertically penetrating through hole. The cross-section of the through hole is waist-shaped and arranged in the front-to-back direction. The connector passes through the through hole. The positions of the holes on the mounting plate for fixing the connector are fixed, so even if there is a machining error in the center position of the through hole on the comb plate, it can still be ensured that the connector passes through the through hole smoothly and is fixed to the mounting plate.

[0015] In the folding knife structure of the bag opening machine described above, the adjacent comb tooth spacing of the comb tooth plate located on the left half of the mounting plate is 'a', and the adjacent comb tooth spacing of the comb tooth plate located on the right half of the mounting plate is 'b', and 'a' and 'b' are not equal. By setting 'a' and 'b' to be different, when the increase or decrease in the length of the bag is less than the spacing between adjacent comb teeth, an additional comb tooth plate can be designed on the half with a larger spacing, and a comb tooth plate can be removed on the other half. The increase in length on the lower side of the folding knife is only the absolute value of the difference between 'a' and 'b'. Similarly, removing a comb tooth plate on the half with a larger spacing and adding a comb tooth plate on the other half can reduce the length of the lower side of the folding knife with higher precision to adapt to the bag length. This ensures adjustment accuracy while facilitating material preparation and is cost-effective for folding the edges of bags of different lengths.

[0016] In the folding knife structure of the aforementioned bag opening machine, the movable seat includes a base and a lifting seat. The base is a vertical plate and is slidably connected to the folding support. The lifting seat is vertically slidably connected to the base and can move up and down. The mounting plate is fixed to the lifting seat. In this way, the two lifting seats can move independently, allowing the mounting plates to be lifted and operated separately during the assembly and disassembly of the comb plates. This avoids interference between the front and rear mounting plates, making assembly and disassembly easier. It also facilitates the sequential movement of the two comb plates during the bag opening and folding process, meeting the folding requirements of narrow pockets.

[0017] In the aforementioned bag-opening machine's folding blade structure, the folding blade structure also includes two vertically downward-facing, strip-shaped triangular folding blades. The two triangular folding blades are located at opposite ends of the mounting plate, and are detachably connected to the same movable base via a connecting plate. This arrangement of the triangular folding blades can meet the folding requirements of triangular pockets, and can adapt to the folding requirements of pockets of different lengths by disassembling and replacing them or by adjusting the lateral extension of the connecting plate.

[0018] Compared with the prior art, the advantages of this utility model are as follows:

[0019] When the length of the folding blade structure in the left and right direction of the pocket needs to be changed, the user only needs to add or remove the corresponding number of comb plates at both ends of the original comb plate according to the size data of the pocket length to be increased or decreased. This will make the overall length of the comb plate on the mounting plate meet the new pocket size requirements. In this way, the user does not need to prepare multiple one-piece folding blade parts of different sizes. Instead, multiple comb plates are configured, and multiple comb plates are combined to achieve multi-level adjustment, which greatly reduces the weight and space occupation of spare folding blade parts. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of Embodiment 1.

[0021] Figure 2 yes Figure 1 Enlarged view of part A in the image.

[0022] Figure 3 This is a three-dimensional structural diagram of the mounting plate and comb plate assembly in Embodiment 1.

[0023] Figure 4 yes Figure 3 A 3D explosion diagram.

[0024] Figure 5 This is a three-dimensional structural diagram of the comb plate in Embodiment 1.

[0025] Figure 6 This is a top view of the mounting plate and comb plate assembly in Embodiment 1.

[0026] Figure 7 yes Figure 6 A schematic diagram of the BB cross-section.

[0027] Figure 8 This is a side view of the mounting plate and comb plate assembly in Embodiment 1.

[0028] Figure 9 This is a three-dimensional structural diagram of the two mounting plates and the comb plate assembly in Embodiment 1.

[0029] In the diagram, 1. Folding bracket; 2. Movable seat; 21. Base; 22. Lifting seat; 3. Mounting plate; 31. Positioning groove; 4. Comb plate; 41. Reinforcing boss; 42. Through hole; 43. Comb teeth; 5. Connector; 6. Triangular folding blade; 7. Connecting plate; 8. Stepper motor; 9. Belt. Detailed Implementation

[0030] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0031] Example 1:

[0032] like Figure 1 As shown, the bag opening machine includes a folding bracket 1 and two movable seats 2 that can move back and forth or in opposite directions. The movable seats 2 are slidably connected to the folding bracket 1. The folding bracket 1 is fixed with two stepper motors 8. The two stepper motors 8 are respectively connected to the two movable seats 2 through belts 9 to drive the movable seats 2 to move back and forth. The movable seat 2 includes a base 21 and a lifting seat 22. The base 21 is in the shape of a vertical plate and is slidably connected to the folding bracket 1. The lifting seat 22 is vertically slidably connected to the base 21. Specifically, the base 21 is also fixed with a stepper motor 8. The stepper motor 8 is connected to the lifting seat 22 through existing belts to control the lifting seat 22 to lift. The mounting plate 3 is fixed on the lifting seat 22. The folding blade structure includes two horizontally arranged strip-shaped mounting plates 3, which are fixed to the lower part of the two lifting seats 22 respectively. The folding blade structure also includes two vertically arranged strip-shaped triangular folding blades 6, which are located at both ends of the mounting plates 3 respectively. The two triangular folding blades 6 can be detachably connected to the same movable seat 2 through the connecting plate 7.

[0033] like Figure 2 As shown, the folding knife structure also includes several strip-shaped comb plates 4 arranged in the vertical direction. The upper part of the comb plate 4 is fixed to the mounting plate 3, and several comb plates 4 located on the same mounting plate 3 are arranged in the left and right directions at intervals. The lower part of the comb plate 4 extends downward relative to the mounting plate 3.

[0034] like Figure 3 , Figure 5As shown, the upper part of the comb plate 4 is horizontally bent along the front-to-back direction to form an inverted L shape. The upper part of the comb plate 4 has an integrally formed reinforcing boss 41 protruding upwards, and the end face edges of the upper part of the comb plate 4 are rounded. The upper part of the comb plate 4 has a vertically penetrating through hole 42, the cross-section of which is waist-shaped and arranged in the front-to-back direction. The lower part of the comb plate 4 has at least one comb tooth 43 bent into a strip shape along the front-to-back direction. The left and right widths of the comb plate 4 can vary. For the comb plate 4 located in the middle that does not require adjustment, it can be designed as a single-piece structure with a larger left and right width. The comb plates 4 on the left and right sides are narrower and strip-shaped, and the lower part of these comb plates 4 has two comb teeth 43 or one comb tooth 43, which facilitates improved adjustment accuracy and convenience.

[0035] like Figure 3 , Figure 4 As shown, the lower side of the mounting plate 3 has several strip-shaped positioning grooves 31 arranged along the front-back direction. The positioning grooves 31 are arranged at intervals along the left-right direction. The upper part of the comb plate 4 is positioned and embedded in the positioning grooves 31. One end of the positioning groove 31 is forward or backward.

[0036] like Figure 6 , Figure 7 As shown, the upper part of the comb plate 4 is vertically attached to the mounting plate 3 and fixed to the mounting plate 3 by a vertically penetrating connector 5. The connector 5 is an internal hex bolt, which is screwed into the mounting plate 3. At the same time, the connector 5 vertically penetrates the through hole 42 on the reinforcing boss 41. The upper end face of the comb plate 4 abuts against the inner wall of the other end of the positioning groove 31 in the front-back direction.

[0037] like Figure 8 As shown, the spacing between adjacent comb teeth 43 of the comb plate 4 located on the left half of the mounting plate 3 is 5mm, and the spacing between adjacent comb teeth 43 of the comb plate 4 located on the right half of the mounting plate 3 is 6mm, thus achieving a size adjustment accuracy of 1mm.

[0038] like Figure 9 As shown, the number of comb plates 4 on the two mounting plates 3 is the same and they are arranged symmetrically front to back.

[0039] When the length of the pocket needs to be changed in the left and right direction, if the user needs to increase the length of the pocket, an additional number of comb plates 4 can be installed or removed from the outer end of the original comb plate 4. This will make the overall length of the comb plates 4 on the mounting plate 3 meet the new pocket size requirements. In this way, the user does not need to prepare multiple one-piece folding knife parts of different sizes. Instead, multiple comb plates 4 can be configured and multiple levels of adjustment can be achieved by combining multiple comb plates 4, which greatly reduces the weight and space occupation of folding knife spare parts.

[0040] Example 2:

[0041] This embodiment is basically the same as Embodiment 1, except that the spacing between adjacent comb teeth 43 on the mounting plate 3 is 5mm. This means that for pocket lengths that are mostly multiples of 5mm, only single-tooth and multiple double-tooth comb plates 4 need to be prepared, reducing the variety of materials required and simplifying the operation. The comb plate 4 is fixed to the front or rear side of the mounting plate 3 by a detachable cylindrical pin.

[0042] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A folding knife structure for a bag opening machine, the bag opening machine comprising a folding edge support (1) and two movable seats (2) capable of moving back and forth towards each other or in opposite directions, the movable seats (2) being connected to the folding edge support (1), characterized in that, The folding knife structure includes two horizontally arranged strip-shaped mounting plates (3) along the left and right directions. The two mounting plates (3) are respectively fixed to the lower part of the two movable seats (2). Each mounting plate (3) is provided with a number of comb plates (4) arranged at intervals along the left and right directions. The comb plates (4) are strip-shaped and arranged along the up and down directions. The upper part of the comb plate (4) is detachably fixed to the mounting plate (3). The lower part of the comb plate (4) has comb teeth (43) bent in the front and back directions.

2. The folding blade structure of the bag opening machine according to claim 1, characterized in that, The upper part of the comb plate (4) is bent horizontally to form an inverted L shape. The upper part of the comb plate (4) is vertically attached to the mounting plate (3) and fixed to the mounting plate (3) by a connecting piece (5) that runs vertically through it.

3. The folding blade structure of the bag opening machine according to claim 2, characterized in that, The upper or lower side of the mounting plate (3) has a plurality of strip-shaped positioning grooves (31) arranged in the front-back direction. The plurality of positioning grooves (31) are arranged at intervals in the left-right direction. The upper part of the comb plate (4) is positioned and embedded in the positioning grooves (31).

4. The folding blade structure of the bag opening machine according to claim 2, characterized in that, The upper part of the comb plate (4) is integrally formed with an upward or downward protruding reinforcing boss (41), and the connector (5) vertically penetrates the reinforcing boss (41).

5. The folding blade structure of the bag opening machine according to claim 3, characterized in that, One end of the positioning groove (31) is forward or backward, and the upper end face of the comb plate (4) abuts against the inner wall of the other end of the positioning groove (31) in the front-back direction.

6. The folding blade structure of the bag opening machine according to claim 3, characterized in that, The upper end face edge of the comb plate (4) is rounded.

7. The folding blade structure of the bag opening machine according to claim 5, characterized in that, The upper part of the comb plate (4) has a vertical through hole (42), the cross-section of which is waist-shaped and arranged in the front-back direction, and the connector (5) passes through the through hole (42).

8. The folding blade structure of the bag opening machine according to claim 1, 2, or 3, characterized in that, The spacing between adjacent comb teeth (43) of the comb plate (4) located on the left half of the mounting plate (3) is a, and the spacing between adjacent comb teeth (43) of the comb plate (4) located on the right half of the mounting plate (3) is b, and a and b are not equal.

9. The folding blade structure of the bag opening machine according to claim 1, 2, or 3, characterized in that, The movable seat (2) includes a base (21) and a lifting seat (22). The base (21) is in the shape of a vertical plate and is slidably connected to the folded edge bracket (1). The lifting seat (22) is slidably connected to the base (21) and can be raised and lowered. The mounting plate (3) is fixed to the lifting seat (22).

10. The folding blade structure of the bag opening machine according to claim 1, 2, or 3, characterized in that, The folding knife structure also includes two vertically downward-facing triangular folding knives (6) in the shape of strips. The two triangular folding knives (6) are located at both ends of the mounting plate (3). The two triangular folding knives (6) can be detachably connected to the same movable base (2) through the connecting plate (7).

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