End part for edge folding device, edge folding device and bag opening machine

Abstract

The utility model relates to an end part used for an edge folding device, the edge folding device and a bag opening machine, one side of the end part is provided with a first hook-shaped edge folding structure, the other two sides of the end part are respectively provided with a second hook-shaped edge folding structure, the two second edge folding structures are respectively located on the two sides of the first edge folding structure, and the two second edge folding structures are arranged on the two sides of the first edge folding structure. The second folding edge structure is matched with the first folding edge structure; the end part is suitable for the edge folding device, not only can meet the edge folding requirements of three edges of a bag opening, but also can meet the edge folding requirements of bag openings of different sizes after being arranged on the edge folding device, and the economical efficiency and universality of the edge folding device are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bag opening equipment, in particular to an end component for a folding device, a folding device and a bag opening machine. Background Art

[0002] The bag opening machine (also called bag opening machine, bag opening sewing machine, etc.) is an indispensable auxiliary processing machine in the garment processing process. It is mainly used to form pockets at specific positions of garments and is widely used in the sewing industry.

[0003] The processing of the bag opening requires cutting, folding (or bag folding), sewing and other processes, among which the folding process is usually achieved by a folding component. Therefore, the existing bag opening machine is usually equipped with a folding component. In the process of opening the bag, a seam that fits the bag opening is first cut in the bag opening area to form a foldable folding piece in the bag opening area, and then the folding component is inserted into the bag opening area so that the folding piece at the edge of the bag opening can be folded by the folding component, and the folding piece is folded to the inside of the bag opening to form the desired bag opening shape. The existing folding components are usually constructed as an L-shaped structure, and a folding component needs to be configured for each side of the bag opening. For example, a bag opening folding mechanism for clothing bag opening processing disclosed in Chinese patent CN212655959U and a bag folding mechanism of a bag opening machine disclosed in Chinese patent CN 218026643 U all use L-shaped folding components, and four folding components need to be configured, and each folding component needs to be equipped with power respectively. Each folding component can only meet the folding requirements on one side, and the existing folding components can only be applied to bag openings of fixed sizes. When the size of the bag opening changes, the folding components of the corresponding size need to be replaced, which is not only troublesome to operate but also costly. In order to solve these technical problems, a folding device that can be suitable for bag openings of different sizes has been developed and designed. The folding device is equipped with at least two folding components, and the bag openings of different sizes are adapted by adjusting the distance between the folding components. However, the structure of the existing folding components does not meet this requirement and cannot play the role of adapting to bag openings of different sizes in the folding device. It is not conducive to simplifying the process and improving efficiency, and it needs to be solved urgently. Utility Model Content

[0004] The first aspect of the utility model is to solve the above technical problems and provide an end component, which can not only meet the folding requirements of the three sides of the bag opening, but also meet the folding requirements of bags of different sizes after being configured in the folding device. The main concept is:

[0005] An end component for a folding device, wherein a first folding structure in the shape of a hook is constructed on one side of the end component, and a second folding structure in the shape of a hook is constructed on the other two sides of the end component, respectively. The two second folding structures are respectively located on the two sides of the first folding structure, and the second folding structure is adapted to the first folding structure. In this scheme, by constructing the first folding structure on one side of the end component, the first folding structure can be used to assist one side of the bag opening to complete the folding, and by constructing the second folding structure in the shape of a hook on the other two sides of the end component, the two second folding structures can be used to assist the other two sides of the bag opening to complete the folding, so that the end component can assist the folding of three sides of the bag opening; and the remaining side of the end component is not provided with a folding structure, so that the side can be used to dock with the remaining end components or middle components, which is conducive to playing the role of adapting to different sizes of bag openings in the folding device; by constructing the second folding structure to adapt to the first folding structure, it can not only effectively prevent the folding actions in the two directions from interfering with each other, so that the folding actions in the two directions are more coordinated, but also it is conducive to simplifying the structure and process, and it is conducive to improving the efficiency of the folding device.

[0006] Preferably, the two second folding structures are symmetrically arranged, which is beneficial to simplifying the structure and the folding process.

[0007] Furthermore, the first folding structure includes a first positioning surface and a first protruding portion protruding from the first positioning surface, the first protruding portion is configured with a first limiting surface for limiting the folding piece, and the first positioning surface and the first limiting surface form a hook shape, so that the hook-shaped first folding structure can be used to assist the folding piece in bending and forming a folded edge.

[0008] Furthermore, the second hem folding structure includes a second positioning surface and a second protruding portion protruding from the second positioning surface, the second protruding portion is configured with a second limiting surface for limiting the hem folding piece, and the second positioning surface and the second limiting surface form a hook shape, so that the hem folding piece is folded with the hook-shaped second hem folding structure to assist in bending and forming a hem.

[0009] Preferably, the first limiting surface is flush with the second limiting surface, which is conducive to performing hemming actions in different directions at the same height, thereby simplifying the bag opening process.

[0010] Preferably, the first folding structure is connected to the second folding structure, so that a better bag opening effect can be achieved along both directions of the bag opening.

[0011] Furthermore, the outer side surface of the first protrusion is also configured with a first guiding surface, which extends to the lower end of the end component, and the thickness of the end component gradually decreases from the upper edge of the first guiding surface to the lower end of the end component, so as to guide the insertion into the pocket area and reduce the resistance when inserting the fabric.

[0012] Furthermore, the outer side surface of the second protrusion is also configured with a second guide surface, which extends to the lower end of the end component, and the width of the end component gradually decreases from the upper edge of the second guide surface to the lower end of the end component, so as to guide the insertion into the pocket area and reduce the resistance when inserting the fabric.

[0013] In order to prevent the mutual interference of the action process, further, the first folding structure and the second folding structure are respectively constructed on the side of the lower end of the end component, and the two sides of the second folding structure on the end component are also constructed with inclined surfaces, so that the width of the end component gradually decreases along the direction close to the second folding structure. The width of the upper end of the end component is large and the width of the lower end is small, so that the lower end of the end component can be prevented from interfering with other components, and it is more convenient to cooperate with other components.

[0014] Preferably, the first folding structure is the same as the second folding structure, which is convenient for production and manufacturing.

[0015] Preferably, the first positioning surface is a vertical plane, the first limiting surface is a plane, and the first limiting surface is perpendicular to the first positioning surface; the second positioning surface is a vertical plane, the second limiting surface is a plane, and the second limiting surface is perpendicular to the second positioning surface; the first positioning surface is perpendicular to the second positioning surface. This is convenient for processing and molding, and is conducive to achieving a better folding effect.

[0016] The second aspect of the utility model is to solve the problem of adapting to the folding of fabrics of different thicknesses. Furthermore, a sinking groove is constructed on the side of the first limiting surface close to the first positioning surface, and the two ends of the sinking groove respectively penetrate the two ends of the first protrusion. The sinking design can, on the one hand, reduce the area of ​​the first limiting surface, thereby reducing the friction during the folding process, and on the other hand, form a accommodating space at a position close to the first positioning surface, so that fabrics of different thicknesses can be bent smoothly and achieve the desired folding effect.

[0017] Furthermore, a sinking groove is constructed on one side of the second limiting surface close to the second positioning surface, and two ends of the sinking groove respectively penetrate through two ends of the second protruding portion, which also has the same effect.

[0018] Preferably, one side wall of the sinking groove is flush with the first positioning surface, so as to facilitate processing and forming.

[0019] Furthermore, the end member is also configured with a mounting portion for installation, so that the installation can be conveniently performed through the mounting portion.

[0020] Preferably, the mounting portion is a mounting hole.

[0021] Furthermore, the end member is also configured with a connecting portion for connecting to a transmission mechanism, so as to connect to the transmission mechanism through the connecting portion.

[0022] Preferably, the connecting portion includes a connecting hole adapted to the nut, so as to connect the nut in the screw-nut mechanism.

[0023] Furthermore, the end member is also configured with a guide hole adapted to the guide shaft and a lock hole connected to the guide hole, and the lock hole is perpendicular to the guide hole. In this solution, when in use, the end member can be movably sleeved on the guide shaft through the guide hole, so that the end member can move relative to the guide shaft to achieve a wider range of distance adjustment; the end member can also be fixed to the guide shaft by a fastener adapted to the lock hole to achieve the purpose of fixing the guide shaft.

[0024] Preferably, the end piece is formed with at least two guide holes.

[0025] Furthermore, the end component is also configured with a groove, which is communicated with the guide hole, and is used to accommodate at least a portion of the elastic component.

[0026] The third aspect of the utility model provides a folding device, comprising a carrier, two end components, a guide mechanism and a power component, wherein:

[0027] The two end members are arranged opposite to each other, and at least one end member is connected to the guide mechanism and can move along the guide mechanism;

[0028] The power component is arranged on the carrier frame, and the power component is connected to the movable end component in a transmission manner to adjust the distance between the two end components. In this scheme, by arranging the two end components relatively, and movably arranging at least one end component, and the end component is connected to the power component in a transmission manner, so as to use the power component to adjust the distance between the two end components, such a design is adopted. On the one hand, the first folding structures in the two end components are separated from each other, and the distance between the two first positioning surfaces is adapted to the size of the bag opening, and the distance can be adjusted by the power component to meet the folding requirements of bag openings of different sizes. On the other hand, the two second folding structures on the same side of the two end components can cooperate with each other to fold one side of the bag opening together. Since the distance between the two end components is adjustable, the distance between the two second folding structures on the same side can also be adjusted according to the length of the bag opening, thereby meeting the folding requirements of bag openings of different sizes.

[0029] Furthermore, it also includes a transition component, which is arranged between the two end components, and the two sides of the transition component are respectively constructed with a third folding structure in the shape of a hook, the third folding structure is adapted to the second folding structure, and the third folding structure is used to assist folding. The position and structure of the third folding structure are adapted to the second folding structure, so that the two second folding structures and the third folding structure on the same side can fold one side of the bag opening together; the transition component can be used to fill the gap between the two end components, and the gap can be divided into multiple smaller gaps, so that when the distance between the two end components is larger, the size of the gap will not be too large, which can not only meet the folding requirements of larger sizes, but also facilitate the realization of better folding effects through the cooperation of the third folding structure and the second folding structure.

[0030] Further, it comprises at least two transition components, each transition component is arranged in a row between two end components, and the transition component is connected to the guide mechanism and can move along the guide mechanism;

[0031] The two ends of the movable transition component are respectively provided with elastic components, and the force is transmitted through the elastic components. The end components are used to drive the transition components adjacent thereto to move.

[0032] When the two end parts are close to each other, the transition parts are synchronously driven to be close to each other, and the elastic potential energy of the elastic parts increases. When the two end parts are far away from each other, the transition parts are synchronously driven to be far away from each other, and the elastic potential energy of the elastic parts decreases. In this scheme, by configuring the transition part between the two end parts, and constructing the third folding structure adapted to the second folding structure on both sides of the transition part, the transition part can make up the gap between the two end parts between the two end parts, so that the third folding structure can be used to make up the gap between the two second folding structures on the same side, so that the two second folding structures and the third folding structure on the same side can fold one side of the bag opening together. In addition, in this scheme, by arranging elastic parts between the two transition parts, so that the transmission force of the elastic parts is used, the change of the spacing between the two end parts can synchronously drive the change of the spacing between the transition parts, so that in any state, each transition part can be evenly distributed between the two end parts, which can not only automatically adapt to bag openings of different sizes, but also has better versatility and is conducive to achieving a better folding effect.

[0033] Preferably, two guide mechanisms are included, namely the first guide mechanism and the second guide mechanism, wherein the first guide mechanism adopts a guide rail slider mechanism, the two end parts are respectively connected to the sliders in the guide rail slider mechanism, and the second guide mechanism includes a guide shaft, the guide shaft is fixed to one of the end parts, the elastic part is sleeved on the guide shaft, and each transition part is sleeved on the guide shaft through a guide hole; the power part is connected to the linear drive module by transmission, the linear drive module is connected to the end parts by transmission, and the power part drives the two end parts to move synchronously in the opposite direction. Not only can the length of the folding device be adjusted more efficiently and accurately to adapt to the folding requirements of bags of different sizes; but also the folding process can be simplified.

[0034] A fourth aspect of the utility model provides a bag opening machine, comprising a frame and the folding device, wherein the folding device is installed on the frame.

[0035] Compared with the prior art, the end component for the folding device provided by the utility model can not only meet the folding requirements of the three sides of the bag opening, but also meet the folding requirements of bag openings of different sizes after being configured in the folding device, thereby effectively improving the economy and versatility of the folding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 This is one of the structural schematic diagrams of an end component provided in Example 1 of the utility model.

[0038] Figure 2 This is the second structural schematic diagram of an end component provided in Example 1 of the utility model.

[0039] Figure 3 for Figure 2 Partial front view of .

[0040] Figure 4 for Figure 2 Partial right view of .

[0041] Figure 5 This is a schematic structural diagram of a folding device provided in Example 2 of the utility model.

[0042] Figure 6 This is a structural schematic diagram of a transition component in a folding device provided in Example 3 of the utility model.

[0043] Figure 7 This is a schematic structural diagram of the first folding device provided in Example 3 of the utility model.

[0044] Figure 8 This is a schematic structural diagram of the second folding device provided in Example 3 of the utility model, and the folding device is in a contracted state.

[0045] Fig. 9 for Figure 8 Right view of .

[0046] Fig.10 This is a schematic structural diagram of the second folding device provided in Example 3 of the utility model, and the folding device is in an extended state.

[0047] Markings in the figure are as follows: end component 1, first folding structure 11, second folding structure 12, inclined surface 13, mounting hole 14, connecting hole 15, guide hole 16, locking hole 17, groove 18; first positioning surface 21, first protrusion 22, first limiting surface 23, first guide surface 24, sinking groove 25; second positioning surface 31, second protrusion 32, second limiting surface 33, second guide surface 34; folding device 4, supporting frame 41, power component 42, screw 43, external thread 431, nut 44, belt transmission mechanism 45; guide rail 51, slider 52; transition component 6, third folding structure 61, third positioning surface 62, third protrusion 63, third limiting surface 64; guide shaft 71, elastic component 72. DETAILED DESCRIPTION

[0048] The technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the utility model.

[0049] Example 1

[0050] This embodiment provides an end member for a folding device. One side of the end member 1 is configured with a first folding structure 11 in a hook shape. Figure 1-Figure 4As shown, the first folding structure 11 can be used to assist one side of the bag opening to complete the folding. At the same time, the other two sides of the end member 1 are also respectively constructed with hook-shaped second folding structures 12, and the two second folding structures 12 are respectively located on both sides of the first folding structure 11. Figure 1-Figure 4 As shown, the two second folding structures 12 can be used to assist the other two sides of the bag opening to complete the folding, so that the end component 1 can assist the three sides of the bag opening to complete the folding. The remaining side of the end component 1 is not provided with a folding structure, such as Figure 1-Figure 4 As shown, so as to utilize this side to dock with the remaining end member 1 or the middle member, it is beneficial to play the role of adapting to the bag openings of different sizes in the folding device 4;

[0051] During implementation, the second folding structure 12 is constructed to adapt to the first folding structure 11, which can not only effectively prevent the folding actions in the two directions from interfering with each other, making the folding actions in the two directions more coordinated, but also help to simplify the structure and process, and help the folding device 4 improve efficiency.

[0052] When implementing, Figure 1-Figure 4 As shown, the first hem folding structure 11 may include a first positioning surface 21 located on the inner side and a first protruding portion 22 protruding from the first positioning surface 21, and the first protruding portion 22 is configured with a first limiting surface 23 for limiting the hem folding piece, so that the first positioning surface 21 and the first limiting surface 23 form a hook shape, so that the hem folding piece is assisted in bending by using the hook-shaped first hem folding structure 11 and forming a hem. In implementation, the first positioning surface 21 can be configured as a vertical plane, such as Figure 1-Figure 4 As shown, in addition, the first positioning surface 21 can also be constructed as an inclined surface 13 inclined to the vertical direction. Of course, the first positioning surface 21 can also be constructed as an arc surface. In implementation, the first limiting surface 23 can preferably be a plane. When the first positioning surface 21 is a vertical plane, the two are exactly perpendicular to each other. Figure 1-Figure 4 As shown, it is convenient for processing and forming, and is conducive to achieving a better folding effect. In addition, the first limiting surface 23 can also be a curved surface or a slope 13 inclined to the horizontal direction. In implementation, the first limiting surface 23 can be a single surface or a combination of multiple surfaces. In implementation, the distance between the first positioning surface 21 and the outer side surface of the first protrusion 22 can be smaller than the size of the folding piece, so that after the folding is completed, at least part of the folding piece is located outside the first protrusion 22, so as to clamp the folding piece during the folding process. In implementation, the spacing can preferably be 1 to 5 mm. As an example, in one embodiment, the spacing can be equal to 2.5 mm.

[0053] Similarly, when implementing Figure 1-Figure 4As shown, the second hem folding structure 12 may include a second positioning surface 31 located on the inner side and a second protruding portion 32 protruding from the second positioning surface 31, and the second protruding portion 32 is configured with a second limiting surface 33 for limiting the hem folding piece, so that the second positioning surface 31 and the second limiting surface 33 form a hook shape, so that the hook-shaped second hem folding structure 12 is used to assist the hem folding piece to bend and form a hem. In implementation, the second positioning surface 31 can be configured as a vertical plane, such as Figure 1-Figure 4 As shown, in addition, the second positioning surface 31 can also be constructed as an inclined surface 13 inclined to the vertical direction. Of course, the second positioning surface 31 can also be constructed as an arc surface. In implementation, the second limiting surface 33 can preferably be a plane. When the second positioning surface 31 is a vertical plane, the two are exactly perpendicular to each other, such as Figure 1-Figure 4 As shown, it is convenient for processing and forming, and is conducive to achieving a better folding effect. In addition, the second limiting surface 33 can also be a curved surface or a slope 13 inclined to the horizontal direction. In implementation, the second limiting surface 33 can be a single surface or a combination of multiple surfaces. In implementation, the distance between the second positioning surface 31 and the outer side surface of the second protrusion 32 can be smaller than the size of the folding piece, so that after the folding is completed, at least part of the folding piece is located outside the second protrusion 32, so as to clamp the folding piece during the folding process. In implementation, the spacing can also preferably be 1 to 5 mm. As an example, in this embodiment, the spacing can be equal to 2.5 mm.

[0054] As an example, in this embodiment, if Figure 1-Figure 4 As shown, the first positioning surface 21 is a vertical plane, the first limiting surface 23 is a horizontal plane, and the first limiting surface 23 is perpendicular to the first positioning surface 21; the second positioning surface 31 is a vertical plane, the second limiting surface 33 is a horizontal plane, and the second limiting surface 33 is perpendicular to the second positioning surface 31; Figure 1-Figure 4 As shown, the first positioning surface 21 is perpendicular to the second positioning surface 31, which is convenient for processing into a shape and is conducive to achieving a better folding effect.

[0055] In implementation, there may be a height difference between the first limiting surface 23 and the second limiting surface 33, but in a preferred embodiment, the first limiting surface 23 is flush with the second limiting surface 33, such as Figure 1-Figure 4 As shown, it is beneficial to perform folding actions in different directions at the same height, thereby simplifying the bag opening process.

[0056] In practice, the first hem folding structure 11 may not be connected to the second hem folding structure 12, but in a preferred embodiment, the first hem folding structure 11 may be connected to the second hem folding structure 12, such as Figure 1-Figure 4 As shown, there is no gap between the two, and the structure is more continuous, so that a better bag opening effect can be achieved along both directions of the bag opening.

[0057] In implementation, the outer side surface of the first protrusion 22 is also configured with a first guide surface 24, and the first guide surface 24 extends to the lower end of the end member 1. From the upper edge of the first guide surface 24 to the lower end of the end member 1, the thickness of the end member 1 gradually decreases. Figure 1-Figure 4 As shown, in order to guide the insertion into the pocket area and reduce the resistance when inserting the fabric. Similarly, the outer side surface of the second protrusion 32 is also configured with a second guide surface 34, and the second guide surface 34 extends to the lower end of the end member 1. From the upper edge of the second guide surface 34 to the lower end of the end member 1, the width of the end member 1 gradually decreases, as shown in FIG. Figure 1-Figure 4 as shown to guide insertion into the pocket area and to reduce resistance when inserting into the fabric.

[0058] In a preferred embodiment, the first hem structure 11 may be the same as the second hem structure 12. Figure 1-Figure 4 As shown, it is easy to produce and manufacture. And in implementation, the two second folding structures 12 can be arranged symmetrically, such as Figure 5 or Figure 7 or Figure 8 As shown, it is beneficial to simplify the structure and simplify the folding process.

[0059] In implementation, the first folding structure 11 and the second folding structure 12 can be respectively constructed on the side surface of the lower end of the end member 1, such as Figure 1-Figure 4 As shown, the two sides of the second folding structure 12 on the end part 1 are also configured with inclined surfaces 13, as shown in FIG. Figure 1-Figure 4 As shown, the width of the end component 1 gradually decreases along the direction close to the second folding structure 12. The width of the upper end of the end component 1 is large and the width of the lower end is small, so that the lower end of the end component 1 can be prevented from interfering with other components, making it easier to cooperate with other components.

[0060] In a more perfect solution, the end member 1 is also configured with a mounting portion for installation, so that the installation can be conveniently performed through the mounting portion. In implementation, the mounting portion can be a mounting hole 14, a mounting column, etc. Figure 1 and Figure 2 As shown, the end component 1 can be installed on the guide mechanism or on the carrier 41 through the installation part, wherein the guide mechanism is usually configured with a guide part and a matching part adapted to the guide part. For example, when the guide mechanism adopts a guide rail slider mechanism, the guide part is the guide rail 51, and the matching part is the slider 52 adapted to the guide rail 51. During assembly, the end component 1 can be installed on the slider 52 in the guide mechanism through the installation part, so that the end component 1 has the freedom to move along the guide mechanism.

[0061] In some usage scenarios, the end component 1 is fixedly installed and has no freedom of movement. In this case, the end component 1 does not need to be configured with a connecting portion for connecting to the transmission mechanism. However, in other usage scenarios, the end component 1 is also configured with a connecting portion for connecting to the transmission mechanism, so that the transmission mechanism can be connected through the connecting portion. During implementation, the connecting portion can be a flange, a connecting hole 15, etc. In the preferred implementation manner provided in this embodiment, the connecting portion includes a connecting hole 15 that is adapted to the nut 44. During assembly, the nut 44 in the screw nut mechanism can be set in the connecting hole 15, such as Figure 1 , Figure 2 , Figure 5 and Figure 8 shown.

[0062] In some usage scenarios, the folding device 4 only needs to be equipped with two end parts 1, and the two end parts 1 are used to adapt to bag openings of different sizes. In other usage scenarios, the folding device 4 is not only equipped with two end parts 1, but also equipped with a movable transition part 6 between the two end parts 1. In order to ensure that the transition part 6 strictly runs in a preset direction, it is usually necessary to configure a guide mechanism for the transition part 6 during implementation. The guide mechanism can be installed on the carrier 41 or directly on the end part 1. At this time, in order to facilitate guiding the transition part 6, in a more complete embodiment, the end part 1 is also constructed with a guide hole 16 adapted to the guide shaft 71 and a lock hole 17 connected to the guide hole 16, such as Figure 1 and Figure 2 As shown, the locking hole 17 is perpendicular to the guide hole 16 so as to be adapted to the guide mechanism equipped with the guide shaft 71. In one scenario, as shown in FIG. Figure 5 and Figure 8 As shown, the end member 1 can be movably sleeved on the guide shaft 71 through the guide hole 16, so that the end member 1 can move relative to the guide shaft 71 to achieve a wider range of distance adjustment; in another scenario, the end member 1 can also be directly fixed to the guide shaft 71 by a fastener adapted to the lock hole 17, such as Figure 5 and Figure 8 As shown, the purpose of fixing the guide shaft 71 is achieved. In implementation, the number of the guide holes 16 can be one or more. In a preferred embodiment, the end member 1 is configured with at least two guide holes 16. In implementation, the locking hole 17 preferably adopts a threaded hole so as to connect a fastener adapted to the threaded hole.

[0063] When the folding device 4 is provided with at least two transition components 6, an elastic component 72 may be provided between the end component 1 and the transition component 6, and the elastic component 72 is used to transmit power. Therefore, during implementation, the end component 1 is further provided with a groove 18, such as Figure 1As shown, the groove 18 is connected with the guide hole 16, and the shape of the groove 18 is adapted to the elastic component 72. The groove 18 is used to accommodate at least part of the elastic component 72, so that when the distance between the end component 1 and the transition component 6 becomes smaller, the elastic component 72 between the two can be received in the groove 18, so that the distance between the end component 1 and the transition component 6 can be smaller, and they can even contact each other, so as to meet the demand for opening bags of smaller sizes.

[0064] In this embodiment, the end member 1 can be made of metal material to ensure the strength and rigidity of the end member 1, so that the end member 1 is not easily deformed. In implementation, the end member 1 can be made of aluminum plate or steel plate as a whole, and the end member 1 can be made of an integrally formed component.

[0065] Example 2

[0066] In order to ensure that fabrics of different thicknesses can be folded smoothly and the folding effect is guaranteed, the main difference between the present embodiment 2 and the above-mentioned embodiment 1 is that in the end member 1 provided in the present embodiment, a sinking groove 25 is further constructed on one side of the first limiting surface 23 close to the first positioning surface 21, such as Figure 1-Figure 4 As shown, the two ends of the sinking groove 25 respectively penetrate the two ends of the first protrusion 22, so that not only can the area of ​​the first limiting surface 23 be reduced, thereby reducing the friction during the folding process, but also a receiving space can be formed at a position close to the first positioning surface 21, so that fabrics of different thicknesses can be bent smoothly and achieve the desired bending effect. Similarly, a sinking groove 25 is also constructed on the side of the second limiting surface 33 close to the second positioning surface 31, as shown in FIG. Figure 1-Figure 4 As shown, the two ends of the sinking groove 25 respectively pass through the two ends of the second protruding portion 32, which can also achieve the same effect.

[0067] The shape of the sinking tank 25 can be determined according to actual needs, for example, Figure 1-Figure 4 As shown, the sinking groove 25 can be a square groove, a trapezoidal groove, a triangular groove, etc., and examples are not given here one by one. The position of the sinking groove 25 can also be determined according to actual needs. As a preference, one side wall of the sinking groove 25 can be flush with the first positioning surface 21, such as Figure 1-Figure 4 As shown, it is easier to process and shape. Figure 1-Figure 4 As shown, the lower groove on the first limiting surface 23 and the limiting groove on the second limiting surface 33 are interconnected and / or perpendicular to each other.

[0068] Example 3

[0069] This embodiment provides a folding device 4, including a carrier 41, two end components 1, a guide mechanism, a power component 42 and a linear drive module, wherein Figure 5As shown, two end parts 1 are arranged opposite to each other, one or both end parts 1 are connected to the guide mechanism and can move along the guide mechanism, so that at least one end part 1 has the freedom of movement. The power part 42 can be a servo motor or a stepper motor, etc. The power part 42 is arranged on the carrier 41, and the power part 42 is connected to the movable end part 1 so that the position of the end part 1 can be adjusted by the power part 42, so that the distance between the two end parts 1 can be adjusted by changing the position of the end part 1.

[0070] In this embodiment, by arranging the two end parts 1 relative to each other, and setting at least one end part 1 movably, and the end part 1 is connected to the power part 42 by transmission, so that, on the one hand, the first folding structures 11 in the two end parts 1 are separated from each other, and the distance between the two first positioning surfaces 21 is adapted to the size of the bag opening, and the distance can be adjusted by the power part 42 to meet the folding requirements of bag openings of different sizes. On the other hand, the two second folding structures 12 on the same side of the two end parts 1 can cooperate with each other to fold one side of the bag opening together. Since the distance between the two end parts 1 is adjustable, the distance between the two second folding structures 12 on the same side can also be adjusted according to the length of the bag opening, thereby meeting the folding requirements of bag openings of different sizes.

[0071] As mentioned above, the guide mechanism is usually configured with a guide portion and a matching portion adapted to the guide portion, and the matching portion and the guide portion constitute a moving pair. The guide mechanism can adopt an existing guide rail slider mechanism or a guide shaft slip ring mechanism, etc. In implementation, the end component 1 can be directly or indirectly connected to the matching portion in the guide machine, and the end component 1 has the freedom of movement through the matching between the matching portion and the guide portion. When both end components 1 are configured to be movable, only one set of guide mechanism can be configured, and the two end components 1 share the guide mechanism. For example, the guide mechanism is configured with two matching portions, and the two end components 1 are respectively connected to the two matching portions, and the two matching portions are movably constrained to the same guide portion. For example, Figure 5 As shown, the two end parts 1 are respectively connected to the slider 52 of the guide mechanism, and the slider 52 is movably constrained to the guide rail 51 of the guide mechanism. In addition, when both end parts 1 are configured to be movable, a set of guide mechanisms can also be configured for each of the two end parts 1, so that the guide mechanisms of the end parts 1 are independent of each other, and the same effect can be achieved.

[0072] During implementation, the power component 42 is connected to the linear drive module, and the linear drive module is connected to the end component 1, so that the power component 42 can drive the end component 1 to move linearly through the linear drive module, so that the power component 42 can be used to adjust the distance between the two end components 1, so as to achieve the purpose of adjusting the length of the folding device 4 according to actual needs. During implementation, the linear drive module can adopt an existing linear drive module, for example, a linear module driven by a screw rod 43 or a linear module driven by a synchronous belt or a linear module driven by a gear rack, etc. In a preferred embodiment, a set of linear drive modules and a power component 42 can be configured for each of the two end components 1, and the two power components 42 can be used to control the synchronous reverse movement of the two end components 1, which is conducive to simplifying the control. In another preferred embodiment, a set of linear drive modules and a power component 42 can be configured for the two end components 1, so that one power component 42 can be used to drive the two end components 1 to move synchronously in the opposite direction. For example, the linear drive module may include a screw 43, two nuts 44 adapted to the screw 43, the screw 43 is configured with two sections of external threads 431 with opposite rotation directions, the two nuts 44 are respectively threadedly connected to the two sections of external threads 431, the power component 42 is transmission-connected to the screw 43, and the two nuts 44 are respectively connected to the two end components 1, so that the power component 42 can be used to drive the two end components 1 to move synchronously in the opposite direction, so as to effectively adjust the distance between the two end components 1. As a preferred embodiment, Figure 5 As shown, the power component 42 can be connected to the middle part of the screw rod 43 through a belt transmission mechanism 45, two sections of external threads 431 are respectively constructed at both ends of the screw rod 43, and the nut 44 can be set in the connecting hole 15 of the end component 1 and fixed to the end component 1, so that the power component 42 can be used to drive the two end components 1 to move synchronously in opposite directions to adapt to bag openings of different sizes.

[0073] Example 4

[0074] In order to solve the problem of increasing the applicable size of the folding device 4, the main difference between the present embodiment 4 and the above-mentioned embodiment 3 is that the folding device 4 provided in the present embodiment further includes a transition component 6, and the transition component 6 is arranged between the two end components 1, such as Figure 6As shown, the two sides of the transition part 6 are respectively constructed with a third folding structure 61 in a hook shape, the third folding structure 61 is adapted to the second folding structure 12, and the third folding structure 61 is used to assist folding. In implementation, the third folding structures 61 on both sides of the transition part 6 can be arranged symmetrically, and the position and structure of the third folding structure 61 are adapted to the second folding structure 12, so that the two second folding structures 12 and the third folding structure 61 on the same side can fold one side of the bag opening together. In this design, by configuring the transition part 6 between the two end parts 1, the transition part 6 can be used to fill the gap between the two end parts 1, and the gap can be divided into multiple smaller gaps, so that when the spacing between the two end parts 1 is larger, the size of the gap will not be too large, which can not only meet the folding requirements of larger sizes, but also facilitate the realization of better folding effects through the cooperation of the third folding structure 61 and the second folding structure 12.

[0075] In implementation, the third hem structure 61 may include a third positioning surface 62 and a third protruding portion 63 protruding from the third positioning surface 62, the third protruding portion 63 is configured with a third limiting surface 64 for limiting the hem piece, and the third positioning surface 62 and the third limiting surface 64 form a hook shape, such as Figure 6 As shown, the third hem structure 61 of hook shape can be used to assist the hem sheet in bending and forming the hem. After the assembly is completed, the third positioning surface 62 can be flush with the second positioning surface 31, and the third limiting surface 64 can be flush with the second limiting surface 33, as shown in FIG. Figure 8 and Fig. 9 In implementation, the third hem structure 61 may be the same as the second hem structure 12 .

[0076] When the folding device 4 is only equipped with one transition component 6, the transition component 6 can be arranged at the middle position of the two end components 1 and can be fixedly connected to the supporting frame 41, such as Figure 7As shown, the thickness of the transition component 6 can be determined according to actual needs. When the folding device 4 is equipped with at least two transition components 6, each transition component 6 can be arranged in a row between the two end components 1, and at least one transition component 6 is connected to the guide mechanism and can be moved along the guide mechanism, that is, part of the transition components 6 can be fixedly installed (for example, the transition component 6 located in the middle position can be fixedly installed), and the remaining part of the transition component 6 can be movably arranged. In a preferred embodiment, each transition component 6 is respectively connected to the guide mechanism and can be moved along the guide mechanism, which not only allows each transition component 6 to have the freedom of movement, but also allows the third folding structure 61 on the side of each transition component 6 to cooperate with each other and jointly play a role in auxiliary folding. During implementation, the guide mechanism can be a guide mechanism of the end component 1, or it can be a guide mechanism separately configured for the transition component 6. For example, each transition component 6 can be movably connected to the guide portion of the guide mechanism through each matching portion. As a preferred embodiment, as Figure 8 and Fig. 9 As shown, the folding device 4 may include two guide mechanisms, which are respectively a first guide mechanism and a second guide mechanism for easy distinction. The first guide mechanism may preferably adopt a guide rail slider mechanism, and the two end members 1 are respectively connected to the slider 52 in the guide rail slider mechanism; the second guide mechanism may include a guide shaft 71, and the transition member 6 is respectively sleeved on the guide shaft 71 through the guide hole 16, as shown in FIG. Figure 8 and Fig. 9 In implementation, the guide shaft 71 can be installed on the carrier 41 or on one of the end members 1. The number of guide shafts 71 can be determined according to actual needs. For example, Figure 8 and Fig. 9 As shown, two guide shafts 71 are provided, the two guide shafts 71 are respectively fixed to the two end parts 1, the two guide shafts 71 are parallel to each other, and the transition part 6 is simultaneously provided on the two guide shafts 71 through two guide holes 16, so as to more accurately guide the linear movement of the transition part 6. Correspondingly, guide holes 16 are also provided at the positions corresponding to the guide shafts 71 on the end parts 1, which is conducive to achieving a wider range of length adjustment.

[0077] At the same time, if Figure 8 and Fig.10 As shown, the front and rear ends of the movable transition component 6 are respectively provided with elastic components 72, so that the elastic components 72 can be used to transmit the force to drive the transition component 6 to move synchronously. In the case where a guide shaft 71 is configured, the elastic component 72 can be sleeved on the guide shaft 71, such as Fig.10 In implementation, the elastic component 72 may preferably be a compression spring (such as a cylindrical helical compression spring), a conical helical spring, a spiral helical spring, or the like.

[0078] The end member 1 is connected to the transition member 6 at the end. In practice, the end member 1 can be directly connected to the transition member 6 at the end, or an elastic member 72 can be configured between the end member 1 and the transition member 6. Fig.10 As shown, an elastic component 72 is used to transmit the force between the two, so that the end component 1 drives the transition component 6 adjacent thereto to move.

[0079] When in use, the position of the end component 1 is adjusted by the power component 42. When the two end components 1 approach each other, the transition components 6 are synchronously driven to approach each other, and the elastic potential energy of the elastic component 72 increases, and each transition component 6 can automatically maintain a relatively uniform dispersion state; when the two end components 1 move away from each other, the transition components 6 are synchronously driven to move away from each other, and the elastic potential energy of the elastic component 72 decreases, and each transition component 6 can automatically maintain a relatively uniform dispersion state, so that the transition component 6 can fill the gap between the two end components 1, so that the third folding structure 61 can be used to fill the gap between the two second folding structures 12 on the same side, so that the two second folding structures 12 on the same side and the third folding structure 61 can jointly fold one side of the bag opening.

[0080] Example 5

[0081] This embodiment provides a bag opening machine, including a frame and the folding device 4 in the above embodiment. The supporting frame 41 of the folding device 4 can be connected to the frame so that the folding device 4 can be used to meet the folding requirements of bags of different sizes.

[0082] In actual use, the length of the folding device 4 can be adjusted according to the length of the bag opening, so that the distance between the two first positioning surfaces 21 in the folding device 4 is adapted to the required length of the bag opening, so as to meet the folding requirements on one side of bag openings of different sizes. At the same time, the length of the required bag opening can be adapted through the cooperation of the second folding structure 12 or the second folding structure 12 and the third folding structure 61, so as to meet the folding requirements on the other side of bag openings of different sizes.

[0083] During implementation, the existing folding process can be used to perform the folding operation on one side of the bag opening, which will not be described in detail here.

[0084] The above description is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention.

Claims

1. An end member for a folding device, characterized in that: One side of the end component is constructed with a first hook-shaped folding structure, and the other two sides of the end component are also constructed with second hook-shaped folding structures. The two second folding structures are respectively located on both sides of the first folding structure, and the second folding structure is adapted to the first folding structure.

2. The end piece for a hemming device according to claim 1, characterized in that: The first folding structure includes a first positioning surface and a first protruding portion protruding from the first positioning surface, the first protruding portion is configured with a first limiting surface for limiting the folding piece, and the first positioning surface and the first limiting surface form a hook shape.

3. The end piece for a hemming device according to claim 2, characterized in that: The second folding structure includes a second positioning surface and a second protruding portion protruding from the second positioning surface, the second protruding portion is configured with a second limiting surface for limiting the folding piece, and the second positioning surface and the second limiting surface form a hook shape.

4. The end piece for a hemming device according to claim 3, characterized in that: The first limiting surface is flush with the second limiting surface; And / or, the first folding structure is connected to the second folding structure; And / or, the outer side surface of the first protrusion is further configured with a first guide surface, the first guide surface extends to the lower end of the end component, and the thickness of the end component gradually decreases from the upper edge of the first guide surface to the lower end of the end component; And / or, the outer side surface of the second protrusion is further configured with a second guide surface, the second guide surface extends to the lower end of the end component, and the width of the end component gradually decreases from the upper edge of the second guide surface to the lower end of the end component; And / or, the two second folding structures are symmetrically arranged, and the first folding structure is the same as the second folding structure.

5. The end piece for a hemming device according to claim 3, characterized in that: A sinking groove is also constructed on one side of the first limiting surface close to the first positioning surface, and two ends of the sinking groove respectively penetrate through two ends of the first protruding portion; A sinking groove is also constructed on one side of the second limiting surface close to the second positioning surface, and two ends of the sinking groove respectively penetrate through two ends of the second protruding portion; The end member is also configured with a mounting portion for mounting; The end member is also configured with a connection portion for connecting to a transmission mechanism; And / or, the end member is further configured with a guide hole adapted for the guide shaft and a locking hole connected to the guide hole, wherein the locking hole is perpendicular to the guide hole.

6. A folding device, characterized in that: It comprises a bearing frame, two end components according to any one of claims 1 to 5, a guide mechanism and a power component, wherein: The two end members are arranged opposite to each other, and at least one end member is connected to the guide mechanism and can move along the guide mechanism; The power component is arranged on the bearing frame, and the power component is drivingly connected with the movable end component to adjust the distance between the two end components.

7. The folding device according to claim 6, characterized in that: It also includes a transition component, which is arranged between the two end components. The two sides of the transition component are respectively constructed with a third folding structure in a hook shape. The third folding structure is adapted to the second folding structure and is used for auxiliary folding.

8. The folding device according to claim 7, characterized in that: It comprises at least two transition components, each of which is arranged in a row between two end components, and the transition components are connected to a guide mechanism and can move along the guide mechanism; The two ends of the movable transition component are respectively provided with elastic components, and the force is transmitted through the elastic components. The end components are used to drive the transition components adjacent thereto to move. When the two end parts are close to each other, the transition parts are synchronously driven to be close to each other, and the elastic potential energy of the elastic part increases. When the two end parts are far away from each other, the transition parts are synchronously driven to be far away from each other, and the elastic potential energy of the elastic part decreases.

9. The folding device according to claim 8, characterized in that: It includes two kinds of guiding mechanisms, namely a first guiding mechanism and a second guiding mechanism, wherein the first guiding mechanism adopts a guide rail slider mechanism, and the two end parts are respectively connected to the sliders in the guide rail slider mechanism; the second guiding mechanism includes a guide shaft, the guide shaft is fixed to one of the end parts, the elastic part is sleeved on the guide shaft, and each transition part is respectively sleeved on the guide shaft through a guide hole; the power part is transmission-connected to the linear drive module, the linear drive module is transmission-connected to the end parts, and the power part drives the two end parts to move synchronously in reverse.

10. A bag opening machine, characterized in that: It comprises a frame and the folding device described in any one of claims 6 to 9, wherein the folding device is installed on the frame.

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