Creasing and bag folding mechanism

Abstract

The utility model embodiment provides a kind of creasing mechanism and bag folding mechanism, including base and connecting piece, at least two groups of bag clamping parts are equipped on the base, and limit part is equipped on the bag clamping part;Connecting piece is connected first driving part, and the first driving part drives the connecting piece to make the connecting piece reciprocatingly move on the base along first direction;Folding mark seat is equipped on the connecting piece, and the folding mark seat is located between two groups of the bag clamping part, folding bag portion and push-out portion are respectively equipped on the folding mark seat two sides, and the folding bag portion is used to fold into the limit part inside bag body and carry out creasing, and the push-out portion is used to push out after the bag body of creasing.This embodiment realizes the integration of folding bag and push-out action by folding mark seat, effectively improves creasing efficiency and creasing accuracy.

Description

Technical Field

[0001] This invention relates to the field of packaging equipment, and particularly to a crease mechanism and a bag folding mechanism. Background Technology

[0002] In the product packaging sector of industries such as food and pharmaceuticals, the demand for diverse packaging formats, including strip packaging boxes, is continuously growing due to their ability to integrate and store products of various sizes, enhance product display aesthetics, and improve transportation convenience. As the demand for diverse strip packaging continues to evolve, and as customers increasingly demand higher precision and efficiency in processing the creases of strip packaging bags, traditional folding and crease mechanisms are no longer suitable. Utility Model Content

[0003] Therefore, in order to overcome at least some of the defects and deficiencies in the prior art, the present invention provides a crease mechanism and a bag folding mechanism, which effectively improve the processing accuracy and efficiency of creases.

[0004] On one hand, an embodiment of the present invention provides a crease mechanism, including a base and a connector. The base has at least two sets of pocket components, each with a limiting portion. The connector is connected to a first driving member, which drives the connector to reciprocate along a first direction on the base. The connector has a crease seat located between the two sets of pocket components. The crease seat has a folding portion and a pushing portion on each side. The folding portion is used to fold the bag body into the limiting portion to create a crease, and the pushing portion is used to push the creased bag body out.

[0005] In an embodiment of this application, the crease mechanism includes a material pushing device, which includes a pusher frame located on the crease mechanism. The pusher frame includes a plurality of pusher plates spaced apart along a second direction perpendicular to the first direction. The pusher frame is connected to a second driving member, which drives the pusher frame to reciprocate along the second direction on the crease mechanism. The plurality of pusher plates are connected to a third driving member, which drives the plurality of pusher plates to be in a pusher state or an avoidance state. The pusher plates are used to push the bag body, and the pusher frame is used to cooperate with the pusher plates to transport the bag body to a subsequent mechanism.

[0006] In an embodiment of this application, the crease mechanism includes a folding bag module located on the side of the connector away from the base; the folding bag module includes a guide block connected to the base, the guide block having a guide groove and a plurality of mounting grooves communicating with the guide groove, the plurality of mounting grooves being spaced apart along the first direction and perpendicular to the guide groove; the pocket clip is located in the mounting groove and snapped into the guide groove, the limiting part communicating with the guide groove; the connector has a pin, the pin being fixedly connected to the crease seat, the crease seat being located in the guide groove.

[0007] In an embodiment of this application, the folding bag module includes a base plate, and the guide block is fixedly connected to the base plate; the folding mechanism includes a side plate, and the side plate is fixedly connected to the base plate and the base; there are multiple folding bag modules, and the side plates are fixedly connected sequentially along the first direction.

[0008] In an embodiment of this application, the width of the folded bag portion is greater than the width of the push-out portion.

[0009] In an embodiment of this application, the folding bag module includes a positioning member and a buffer top rod. The positioning member is disposed on the folding seat and parallel to the card bag member. The buffer top rod is disposed on the side of the positioning member facing the push-out portion and extends in the direction of the push-out portion.

[0010] In embodiments of this application, a single folding bag module includes a plurality of card pocket components and a plurality of crease seats, and the number of card pocket components and crease seats is equal.

[0011] On the other hand, an embodiment of the present invention provides a bag folding mechanism, including the aforementioned folding mechanism, and a conveying mechanism, the bag folding mechanism, and a gathering mechanism connected sequentially along a second direction perpendicular to the first direction.

[0012] As can be seen from the above, the technical features of this utility model can have one or more of the following beneficial effects:

[0013] The first driving component drives the connecting component, causing the crease holder to reciprocate between the two sets of card pocket components. The folding part folds the bag body into the limiting part to form a crease, and the ejecting part ejects the creased bag body, completing the crease processing. The reciprocating movement of the crease holder between the two sets of card pocket components achieves integrated linkage between the folding and ejecting actions, significantly shortening the single processing cycle and improving efficiency. The folding part folds the bag body into the limiting part, and the limiting part constrains the formation of a standardized crease, ensuring the consistency of the crease position and depth, effectively improving crease accuracy and product consistency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A top view of a bag folding mechanism provided in an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle;

[0017] Figure 3 for Figure 1 A schematic diagram of the crease mechanism;

[0018] Figure 4 for Figure 3 A structural diagram of a folding bag module;

[0019] Figure 5 This is a schematic diagram of the structure where the bag is placed on the folding module;

[0020] Figure 6 for Figure 5 A schematic diagram of the folds in the middle pocket;

[0021] Figure 7 for Figure 5 A schematic diagram of the structure of the middle bag after folding;

[0022] Figure 8 for Figure 1 A schematic diagram of the pusher device.

[0023] [Key Figure Markers]

[0024] 1: Conveying mechanism; 2: Bag folding mechanism; 21: Connector; 211: Pin; 22: Bag folding module; 221: Bag clamping component; 2211: Limiting part; 222: Crease seat; 2223: Bag folding part; 2224: Pushing part; 223: Guide block; 224: Guide groove; 225: Positioning component; 226: Buffer top rod; 227: Base plate; 23: First driving component; 24: Second driving component; 25: Guide rail slider module; 26: Pushing device; 261: Pusher frame; 262: Bag pushing plate; 263: Pushing guide rail; 27: Side plate; 28: Base; 29: Third driving component; 3: Gathering mechanism; 100: Crease mechanism. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments described in this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, top, and bottom) in this embodiment of the invention are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicator will also change accordingly. Furthermore, the term "vertical" in the embodiments and claims refers to an angle of 90° between two components or a deviation of -5° to +5°, and the term "parallel" refers to an angle of 0° between two components or a deviation of -5° to +5°.

[0027] In this embodiment of the invention, the use of terms such as "first" and "second" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0028] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the embodiment of this application, a crease mechanism includes a base 28 and a connector 21. The base 28 is provided with at least two sets of pocket members 221, and the pocket members 221 are provided with limiting portions 2211. The connector 21 is connected to a first driving member 23, and the first driving member 23 drives the connector 21 to reciprocate along a first direction on the base 28.

[0029] The connector 21 is provided with a crease seat 222, which is located between the two sets of card pocket parts 221. The crease seat 222 is provided with a folding part 2223 and a push-out part 2224 on both sides. The folding part 2223 is used to fold the bag body into the limiting part 2211 to make a crease, and the push-out part 2224 is used to push out the creased bag body.

[0030] Specifically, the base 28 is also provided with a guide rail slider module 25, and the connector 21 is slidably connected to the guide rail slider module 25. Exemplarily, the first driving member 23 is, for example, a driving cylinder, and the first driving member 23 includes two driving cylinders connected to opposite ends of the connector 21 in a first direction. The two driving cylinders are connected by cylinder rods, synchronously driving the connector 21 to reciprocate along the first direction. When the connector 21 moves towards one side, one driving cylinder extends while the other retracts, providing both tension and thrust to the connector 21. For example, in the first direction, the driving cylinder drives the connector 21 to move to the right, thereby driving the crease seat 222 to move to the right, and the folding part 2223 folds the bag body into the limiting part 2211 for folding; the driving cylinder drives the connector 21 to move to the left, thereby driving the crease seat 222 to move to the left, and the pushing part 2224 pushes the folded bag body out of the limiting part 2211.

[0031] The number of crease seats 222 can be, for example, multiple, with multiple crease seats 222 adjacent to the card pocket component 221, for example, multiple crease seats are all provided on the same side of each card pocket component 221. (Refer to...) Figure 5 As shown, the folding part 2223 and the ejection part 2224 are located on opposite sides of the folding seat 222, and the bag body is positioned between the folding part 2223 and the card pocket component 221, ready to complete the folding action. (Refer to...) Figure 6 As shown, the crease seat 222 moves toward the folding part 2223, and the folding part 2223 folds the bag body into the limiting part 2211, creating a crease on the bag body. (Refer to...) Figure 7 As shown, the crease seat 222 moves toward the side of the ejection part 2224, and the ejection part 2224 ejects the bag body after the crease is completed.

[0032] For example, a first card pocket member 221 and a second card pocket member 221 are provided at intervals. A crease seat 222 includes a first crease seat 222 and a second crease seat 222, with the first crease seat 222 located between the first card pocket member 221 and the second card pocket member 221, and the second crease seat 222 located on the side of the second card pocket member 221 away from the first crease seat 222. The protrusion portion 2224 of the first crease seat 222 is positioned closer to the first card pocket member 221, and the folding portion 2223 is positioned closer to the second card pocket member 221. Similarly, the protrusion portion 2224 of the second crease seat 222 is positioned closer to the second card pocket member 221, and the folding portion 2223 is positioned away from the second card pocket member 221. The bag body is located between the folding portion 2223 of the first folding seat 222 and the second card pocket 221. The first folding seat 222 and the second folding seat 222 move toward the folding portion 2223, and the folding portion 2223 of the first folding seat 222 folds the bag body into the limiting portion 2211 of the second card pocket 221 to form a fold. The first folding seat 222 and the second folding seat 222 move toward the push-out portion 2224, and the push-out portion 2224 of the second folding seat 222 pushes the folded bag body into the second card pocket 221 between the folding portion 2223 of the first folding seat 222 and the second card pocket 221.

[0033] The first driving component 23 drives the connecting component 21 to reciprocate along the first direction, causing the crease seat 222 to move synchronously. This allows the folding part 2223 to insert the bag body into the limiting part 2211 for crease formation. The action of the ejecting part 2224 pushing the creased bag body out of the limiting part 2211 is seamlessly connected, reducing process intervals and improving single-processing efficiency. By utilizing the cooperation between the limiting part 2211 of the bag clamping component 221 and the folding part 2223, a fixed crease trajectory is formed, ensuring accurate crease position and uniform depth, effectively improving crease accuracy and consistency.

[0034] In some embodiments, refer to Figure 8 As shown, the crease mechanism 100 includes a pushing device 26, which includes a pusher frame 261 located on the crease mechanism 100. The pusher frame 261 includes a plurality of pusher plates 262 spaced apart along a second direction perpendicular to the first direction. The pusher frame 261 is connected to a second driving member 24, which drives the pusher frame 261 to reciprocate along the second direction on the crease mechanism 100. The plurality of pusher plates 262 are connected to a third driving member 29, which drives the plurality of pusher plates 262 to be in a pushing state or an avoidance state. The pusher plates 262 are used to push the bag body, and the pusher frame 261 is used to cooperate with the pusher plates 262 to transport the bag body to a subsequent mechanism.

[0035] Specifically, the pusher frame 261 is connected to the pusher guide rail 263, allowing the pusher frame 261 to slide above the bag folding mechanism 2 and the gathering mechanism 3. Exemplarily, the second drive member 24 is a forward / backward motion drive servo motor, connected to the pusher frame 261 to drive the entire pusher frame 261 to reciprocate along the second direction. The pusher frame 261 includes multiple spaced-apart bag-pushing plates 262 along the second direction. Each bag-pushing plate 262 is connected to a third drive member 29, causing the bag-pushing plate 262 to push the bag while reciprocating along the second direction. The third drive member 29 can be, for example, a lifting cylinder. When the cylinder rises, the bag-pushing plate 262 moves away from the bag and is in a avoidance state; when the cylinder descends, the bag-pushing plate 262 abuts against the bag and is in a bag-pushing state.

[0036] Reference Figure 1 As shown, the conveying mechanism 1 includes multiple adjacent conveying channels, which pass through the bag folding mechanism 2 and the gathering mechanism 3 along a second direction. The bag is placed in the conveying channel, reaches the bag folding mechanism 2 via the conveying mechanism 1 for bag folding, and is then conveyed to the gathering mechanism 3 by the pushing device 26 after folding. When the pusher frame 261 is near the conveying mechanism 1, the pusher plate 262 is in a pushing state, pushing the bag. The pusher frame 261 moves towards the gathering mechanism 3. When the pusher frame 261 reaches the gathering mechanism 3, the pusher plate 262 is in a yielding state, moving away from the bag. When the pusher frame 261 moves from near the conveying mechanism 1 towards the gathering mechanism 3, the pusher plate 262 is in a pushing state; when the pusher frame 261 moves from the gathering mechanism 3 towards the conveying mechanism 1, the pusher plate 262 is in a yielding state. The second driving component 24 drives the pusher frame 261 to reciprocate along the second direction. In conjunction with the clamping action of the bag pusher plate 262, the folded bag can be stably transported to the subsequent mechanism, realizing the automated connection between processes. When applied to mechanisms such as the lining machine, it can effectively improve the overall efficiency.

[0037] Reference Figure 3 and Figure 4 As shown, in some embodiments, the folding mechanism 100 includes a folding pocket module 22, which is located on the side of the connector 21 away from the base 28. The folding pocket module 22 includes a guide block 223 connected to the base 28. The guide block 223 has a guide groove 224 and a plurality of mounting grooves communicating with the guide groove 224. The plurality of mounting grooves are spaced apart along a first direction and perpendicular to the guide groove 224. The pocket clip 221 is located in the mounting groove and is snapped and fixed to the guide groove 224. The limiting part 2211 is connected to the guide groove 224. The connector 21 has a pin 211, which is fixedly connected to the folding seat 222, which is located in the guide groove 224. The connector 21 drives the folding seat 222 to reciprocate along the first direction within the guide groove 224 via the pin 211.

[0038] The folding module 22 is fixedly connected to the base 28 via a guide block 223, so that the bag-holding component 221 inside the folding module 22 is fixed to the guide block 223. The bag body is conveyed to the guide block 223 by the conveying mechanism 1 and folded. The folding seat 222 moves within the guide groove 224 and corresponds to the limiting part 2211. The folding module 22 may include, for example, multiple bag-holding components 221 and folding seats 222, and the layout can be flexibly adjusted according to the assembly mechanism or production line, quickly adapting to different production scenarios and enhancing the equipment's versatility. The guide groove 224 provides precise guidance for the reciprocating motion of the folding seat 222, avoiding offset or shaking during the movement, ensuring the alignment accuracy between the folding part 2223 and the limiting part 2211, and improving the consistency of the folds.

[0039] Reference Figure 3 and Figure 4 As shown, in some embodiments, the folding bag module 22 includes a base plate 227, and a guide block 223 is fixedly connected to the base plate 227. The folding mechanism 100 includes a side plate 27, which is fixedly connected to the base plate 227 and the base 28. Multiple folding bag modules 22 are provided, and the side plates 27 are sequentially fixedly connected along a first direction. Through holes are provided at the connection points of the base plate 227 and the side plates 27, allowing for the base plate 227 and the side plates 27 to be fixedly connected, for example, by bolts, thereby fixing the folding bag module 22 to the base 28. The number of folding bag modules 22, sequentially fixed to the side plates 27 along the first direction, can be flexibly increased or decreased according to production line processing volume and bag size requirements.

[0040] Reference Figure 4 As shown, in some embodiments, the width of the folding portion 2223 is greater than the width of the ejection portion 2224. The folding portion 2223 needs to contact the bag body and apply bending force; a wider width increases the contact area with the bag body, making the force distribution more even and preventing excessive local stress that could damage the bag. It also ensures straight and neat crease lines, improving the crease forming effect. The ejection portion 2224 only needs to push the creased bag body away from the limiting portion 2211; a narrower width reduces interference with the bag body and surrounding components. Especially when the bag size is small, it can act more precisely on key positions of the bag body, ensuring flexible and efficient pushing action and avoiding jamming. The differentiated design of the widths of the folding portion 2223 and the ejection portion 2224 can adapt to the diverse processing needs of different bag bodies.

[0041] Reference Figure 4As shown, in some embodiments, the folding pocket module 22 includes a positioning member 225 and a buffer push rod 226. The positioning member 225 is disposed on the crease seat 222 and parallel to the pocket member 221. The buffer push rod 226 is disposed on the side of the positioning member 225 facing the push-out portion 2224 and extends in the direction of the push-out portion 2224. By pre-setting a limit distance, when the first driving member 23 malfunctions or has incorrect parameters, physical limit protection can be triggered to prevent damage to the crease portion and the push-out portion 2224, significantly reducing the maintenance cost of core functional components.

[0042] Reference Figure 4 As shown, in some embodiments, a single folding bag module 22 includes multiple pocket pieces 221 and multiple crease seats 222, and the number of pocket pieces 221 and crease seats 222 is equal. The equal number of pocket pieces 221 and crease seats 222 within a single folding bag module 22 ensures that when multiple folding bag modules 22 are connected sequentially, crease seats 222 are provided on both adjacent sides of the pocket pieces 221 that limit the bag body. This ensures that after one crease seat 222 completes the crease action on the bag body, the other crease seat 222 pushes out the creased bag body.

[0043] Reference Figure 1 As shown in the illustration, this application also provides a bag folding mechanism 2, including the aforementioned crease mechanism 100, and a conveying mechanism 1, a bag folding mechanism 2, and a gathering mechanism 3 connected sequentially along a second direction perpendicular to the first direction. The conveying mechanism 1 conveys the bag to the bag folding mechanism 2, where the crease mechanism 100 creases the bag. After creases are completed, the bag is conveyed to the gathering mechanism 3 via a pushing device 26. The gathering mechanism 3 further gathers the bag before it enters the subsequent mechanism. Multiple adjacent conveying channels gradually converge from the bag folding mechanism 2 towards the gathering mechanism 3. The bag, after creases are completed, can be further bent, for example, by 180° to achieve a fold, effectively shortening the overall length of the bag, saving space in the packaging box, and reducing packaging costs.

[0044] The bag folding mechanism 2 can be applied to the lining machine and can be seamlessly connected with the bag feeding, sorting and conveying processes of the lining machine. It replaces the traditional decentralized operation mode of manual folding or independent folding equipment, forming an integrated automated process, greatly reducing the manual transfer links between processes and improving the overall production efficiency.

[0045] Furthermore, it is understood that the foregoing embodiments are merely illustrative examples of this utility model. Provided that the technical features do not conflict, the structure is not contradictory, and the inventive purpose of this utility model is not violated, the technical solutions of the various embodiments can be arbitrarily combined and used.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A crease mechanism (100), characterized in that, The device includes a base (28) and a connector (21). The base (28) is provided with at least two sets of card pockets (221), and each card pocket (221) is provided with a limiting part (2211). The connector (21) is connected to a first driving member (23), and the first driving member (23) drives the connector (21) to reciprocate along a first direction on the base (28). The connector (21) is provided with a crease seat (222), which is located between the two sets of card pocket parts (221). The crease seat (222) is provided with a folding part (2223) and a push-out part (2224) on both sides. The folding part (2223) is used to fold the bag body into the limiting part (2211) to make a crease, and the push-out part (2224) is used to push out the creased bag body.

2. The crease mechanism (100) according to claim 1, characterized in that, The device includes a material pushing device (26), which includes a pusher frame (261) located on the crease mechanism (100). The pusher frame (261) includes a plurality of pusher plates (262) spaced apart along a second direction perpendicular to the first direction. The pusher frame (261) is connected to a second drive member (24), which drives the pusher frame (261) to reciprocate along the second direction on the crease mechanism (100). Multiple pusher plates (262) are connected to a third drive member (29). The third drive member (29) drives the multiple pusher plates (262) to be in a pusher state or an avoidance state. The pusher plates (262) are used to push the bag body. The pusher frame (261) is used to cooperate with the pusher plates (262) to transport the bag body to the subsequent mechanism.

3. The crease mechanism (100) according to claim 1, characterized in that, Includes a folding bag module (22), which is located on the side of the connector (21) away from the base (28); The folding bag module (22) includes a guide block (223) connected to the base (28). The guide block (223) is provided with a guide groove (224) and a plurality of mounting grooves connected to the guide groove (224). The plurality of mounting grooves are spaced apart along the first direction and are perpendicular to the guide groove (224). The card pocket component (221) is located in the mounting groove and is snapped and fixed to the guide groove (224), and the limiting part (2211) is connected to the guide groove (224); The connector (21) is provided with a pin (211), which is fixedly connected to the crease seat (222), and the crease seat (222) is located in the guide groove (224).

4. The crease mechanism (100) according to claim 3, characterized in that, The folding bag module (22) includes a base plate (227), and the guide block (223) is fixedly connected to the base plate (227); the folding mechanism (100) includes a side plate (27), and the side plate (27) is fixedly connected to the base plate (227) and the base (28); The number of the folding bag modules (22) is multiple, and the side plates (27) are fixedly connected in sequence along the first direction.

5. The crease mechanism (100) according to claim 1, characterized in that, The width of the folded bag portion (2223) is greater than the width of the push-out portion (2224).

6. The crease mechanism (100) according to claim 3, characterized in that, The folding bag module (22) includes a positioning member (225) and a buffer top rod (226). The positioning member (225) is located on the fold seat (222) and parallel to the card bag member (221). The buffer top rod (226) is located on the side of the positioning member (225) facing the push-out part (2224) and extends in the direction of the push-out part (2224).

7. The crease mechanism (100) according to claim 4, characterized in that, Each of the folding pocket modules (22) includes a plurality of card pocket components (221) and a plurality of crease seats (222), and the number of card pocket components (221) and crease seats (222) is equal.

8. A bag folding mechanism (2), characterized in that, It includes the crease mechanism (100) as described in any one of claims 1 to 7, and the conveying mechanism (1), the bag folding mechanism (2), and the gathering mechanism (3) connected sequentially along a second direction perpendicular to the first direction.

Images