A folding knife device that can be adjusted without stopping

Abstract

The utility model provides a kind of folding knife device of on-line adjustable, including two interval arrangement's vertical plate and the horizontal plate of connecting two vertical plates;Further include first folding knife component, first folding knife component includes first drive motor, first folding blade and first slider, and the upper end of first drive motor is equipped with first screw rod, and first screw rod is arranged vertical plate and is locked by first nut;Further include second folding knife component, second folding knife component includes second drive motor, second folding blade and second slider, and the upper end of second drive motor is equipped with second screw rod, and second screw rod is arranged vertical plate and is locked by second nut, by respectively rotating first screw rod and second screw rod, the theoretical central axis that first folding knife component and second folding knife component are adjusted, ensure accurate alignment with product folding midline, realize under the premise of not stopping, deviation correction, it is favorable to promote the production efficiency and product pass rate of disposable hygienic product automatic production line.

Description

Technical Field

[0001] This utility model relates to the field of disposable hygiene product production equipment, specifically to a folding knife device that can be adjusted without stopping the machine. Background Technology

[0002] In the automated production process of disposable hygiene products (such as sanitary napkins, diapers, etc.), the folding process is a key step to achieve compact packaging. For example, Chinese patent document CN218172868U discloses a folding device that folds sanitary napkins.

[0003] However, in actual continuous production, due to factors such as equipment vibration, material tension fluctuations, or mechanical wear, the central axis of the sanitary napkin may gradually deviate from the theoretical central axis formed by the first and second folding blade assemblies. Once this deviation occurs, it will cause the four corners of the folded product to be misaligned and the edges to be uneven, resulting in appearance defects. Ultimately, it will be judged as a defective product, directly affecting the product yield and market sales.

[0004] The current industry standard solution is to manually stop the machine and adjust the relative positions of the first and second folding blade assemblies when a misalignment problem is detected. This method is not only labor-intensive, but each stoppage also interrupts the continuous operation of the entire production line, resulting in decreased capacity, increased energy consumption, and severely impacting production efficiency. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to propose a folding knife device that can be adjusted without stopping the machine, so as to solve the problems mentioned in the background section above.

[0006] This utility model is achieved through the following technical solution:

[0007] A folding knife device adjustable without stopping the machine includes two spaced-apart vertical plates and a horizontal plate connecting the two vertical plates; it also includes a first folding knife assembly, the first folding knife assembly including a first drive motor, the first output shaft of the first drive motor being connected to a first folding blade, the lower end of the first drive motor being slidably connected to the horizontal plate via a first slider, and the upper end of the first drive motor being provided with a first lead screw, the first lead screw passing through the vertical plate and locked by a first nut; it also includes a second folding knife assembly, the second folding knife assembly including a second drive motor, the second output shaft of the second drive motor being connected to a second folding blade, the lower end of the second drive motor being slidably connected to the horizontal plate via a second slider, and the upper end of the second drive motor being provided with a second lead screw, the second lead screw passing through the vertical plate and locked by a second nut.

[0008] Furthermore, the first folding blade assembly also includes a first fixing sleeve disposed on the outer periphery of the first output shaft, and a first protective cover is fixedly disposed on the outer side of the first folding blade, the first protective cover being fixedly connected to the first fixing sleeve; the second folding blade assembly also includes a second fixing sleeve disposed on the outer periphery of the second output shaft, and a second protective cover is fixedly disposed on the outer side of the second folding blade, the second protective cover being fixedly connected to the second fixing sleeve.

[0009] Furthermore, the first fixed sleeve is connected to the first output shaft via a plurality of first bearings; the second fixed sleeve is connected to the second output shaft via a plurality of second bearings.

[0010] Furthermore, a U-shaped bracket is provided at the lower center of the first folding knife assembly and the second folding knife assembly. A product conveyor belt is provided at the lower end of the U-shaped bracket. The front end of the product is embedded in the U-shaped bracket, and the product is folded and abutted against the product conveyor belt by the first folding knife assembly and the second folding knife assembly.

[0011] Furthermore, it also includes a front plate fixedly connected to the vertical plate and / or horizontal plate, and the U-shaped bracket is adjustablely connected to the front plate along the X-axis and Z-axis directions.

[0012] Furthermore, the U-shaped bracket includes a C-shaped folding plate and a closed folding plate, wherein the closed folding plate and the C-shaped folding plate are adjustablely connected along the Y-axis direction.

[0013] Furthermore, the front ends of the C-shaped folding plate and the enclosing folding plate are flared.

[0014] The beneficial effects of this utility model are as follows: A folding knife device that can be adjusted without stopping the machine includes two spaced-apart vertical plates and a horizontal plate connecting the two vertical plates; it also includes a first folding knife assembly, which includes a first drive motor, the first output shaft of the first drive motor is connected to a first folding blade, the lower end of the first drive motor is slidably connected to the horizontal plate through a first slider, and the upper end of the first drive motor is provided with a first lead screw, which passes through the vertical plate and is locked by a first nut; it also includes a second folding knife assembly, which includes a second drive motor, the second output shaft of the second drive motor is connected to a second folding blade, the lower end of the second drive motor is slidably connected to the horizontal plate through a second slider, and the upper end of the second drive motor is provided with a second lead screw, which passes through the vertical plate and is locked by a second nut. By rotating the first lead screw and the second lead screw respectively, the theoretical central axis formed by the first folding knife assembly and the second folding knife assembly can be adjusted to ensure accurate alignment with the folding center line of the product, realizing correction without stopping the machine, which is conducive to improving the production efficiency and product qualification rate of the automated production line for disposable hygiene products. Attached Figure Description

[0015] Figure 1 This is a perspective view of the folding knife device of this utility model.

[0016] Figure 2 This is a perspective view of the folding knife device of this utility model.

[0017] Figure 3 This is a diagram showing the internal structure of the folding knife device of this utility model.

[0018] Figure 4 This is a perspective view of the U-shaped bracket of this utility model.

[0019] Figure 5 This is a perspective view of the U-shaped bracket of this utility model.

[0020] Figure 6 Another perspective view of the U-shaped bracket of this utility model

[0021] Figure 7 This is a side view of the folding knife device of this utility model.

[0022] The above figures include the following reference numerals:

[0023] 1. Vertical plate; 2. Horizontal plate; 3. First folding knife assembly; 31. First drive motor; 311. First output shaft; 32. First folding blade; 33. First slider; 34. First lead screw; 35. First fixing sleeve; 36. First protective cover; 37. First bearing; 4. Second folding knife assembly; 41. Second drive motor; 411. Second output shaft; 42. Second folding blade; 43. Second slider; 44. Second lead screw; 45. Second fixing sleeve; 46. Second protective cover; 47. Second bearing; 5. U-shaped bracket; 51. C-shaped folding plate; 52. Enclosing folding plate; 53. Horizontal long groove; 54. Vertical long groove; 6. Product conveyor belt; 7. Front plate. Detailed Implementation

[0024] 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. It should be noted that the description of these embodiments is intended to aid in understanding this utility model, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] Reference Figures 1 to 7As shown, a folding knife device that can be adjusted without stopping the machine includes two spaced-apart vertical plates 1 and a horizontal plate 2 connecting the two vertical plates 1; it also includes a first folding knife assembly 3, which includes a first drive motor 31, the first output shaft 311 of the first drive motor 31 is connected to a first folding blade 32, the lower end of the first drive motor 31 is slidably connected to the horizontal plate 2 via a first slider 33, and the upper end of the first drive motor 31 is provided with a first lead screw 34, which passes through the vertical plate 1 and is locked by a first nut; it also includes a second folding knife assembly 4, which includes a second drive motor 41, the second output shaft 411 of the second drive motor 41 is connected to a second folding blade 42, the lower end of the second drive motor 41 is slidably connected to the horizontal plate 2 via a second slider 43, and the upper end of the second drive motor 41 is provided with a second lead screw 44, which passes through the vertical plate 1 and is locked by a second nut.

[0026] When adjustment is needed, first reduce the conveying speed of the automated production line to the product. Then, loosen the first nut using a wrench or other tools, and rotate the first lead screw 34. Due to the presence of the first slider 33, the rotation of the first lead screw 34 will drive the first drive motor 31 to move, thereby adjusting the position of the first folding blade 32 between the two upright plates 1. During this process, the front and rear positions of the first drive motor 31 can be measured using a ruler or other tools to determine the adjustment amount. Similarly, adjust the position of the second folding blade 42 between the two upright plates 1. Then, observe the product after passing through the first folding blade assembly 3 and the second folding blade assembly 4 to confirm whether the four corners of the product are aligned. Once aligned, tighten the first nut and the second nut to prevent the first lead screw 34 and the second lead screw 44 from rotating.

[0027] The first folding knife assembly 3 further includes a first fixing sleeve 35 disposed on the outer periphery of the first output shaft 311, and a first protective cover 36 fixedly disposed on the outer side of the first folding blade 32, the first protective cover 36 being fixedly connected to the first fixing sleeve 35; the second folding knife assembly 4 further includes a second fixing sleeve 45 disposed on the outer periphery of the second output shaft 411, and a second protective cover 46 fixedly disposed on the outer side of the second folding blade 42, the second protective cover 46 being fixedly connected to the second fixing sleeve 45.

[0028] By setting up a first protective cover 36 and a second protective cover 46, it is ensured that the first folding blade and the second folding blade 42 are always effectively isolated during rotation, preventing operators from accidentally touching or getting caught in them.

[0029] The first fixed sleeve 35 is connected to the first output shaft 311 by a plurality of first bearings 37; the second fixed sleeve 45 is connected to the second output shaft 411 by a plurality of second bearings 47.

[0030] Multiple first bearings 37 are provided between the first fixed sleeve 35 and the first output shaft 311 to ensure that the central axes of the first fixed sleeve 35 and the first output shaft 311 always coincide, preventing radial wobble of the first output shaft 311 during operation, thereby ensuring the stability of the rotation of the first folding blade 32 and preventing misalignment of the four corners of the product due to eccentricity of the first folding blade 32. The second fixed sleeve 45 is provided in the same manner.

[0031] Reference Figures 4 to 6 As shown, a U-shaped bracket 5 is provided at the lower center of the first folding knife assembly 3 and the second folding knife assembly 4. A product conveyor belt 6 is provided at the lower end of the U-shaped bracket 5. The product conveyor belt 6 can be a belt conveyor, which is an existing structure and will not be described in detail here. The front end of the product is embedded in the U-shaped bracket 5, and the first folding knife assembly 3 and the second folding knife assembly 4 fold the product and abut it against the product conveyor belt 6, so that the folded product is conveyed along the product conveyor belt 6 to the next process.

[0032] Reference Figure 7 As shown, the black dashed line represents the initial state of the product, the red dashed line represents the folded state of the product after passing through the first folding blade 32 and the second folding blade 42, and the blue dashed line represents the conveyed state of the product after folding via the product conveyor belt 6. During the conveying process, the front end of the product is first inserted into the U-shaped support plate, and then the first folding blade 32 and the second folding blade 42 press down against the product conveyor belt 6. The U-shaped support plate prevents the product from rebounding upwards or shifting laterally under inertia, ensuring that the folded state remains stable. No additional power or complex mechanisms are required; the anti-rebound function can be achieved solely through the physical limitation of the U-shaped support plate, reducing manufacturing and maintenance costs.

[0033] It also includes a front plate 7 fixedly connected to the vertical plate 1 and / or the horizontal plate 2, and the U-shaped bracket 5 and the front plate 7 can be adjustedly connected along the X-axis and Z-axis directions.

[0034] Specifically, the U-shaped bracket 5 is provided with a horizontal long groove 53 along the X-axis and a vertical long groove 54 along the Z-axis. The horizontal long groove 53 and the vertical long groove 54 are respectively inserted by screws, so that the U-shaped bracket 5 and the front plate 7 can be adjusted and connected along the X-axis and Z-axis.

[0035] By adjusting the position of the U-shaped bracket 5, ensure that the central axis of the U-shaped bracket 5 is aligned with the central axis of the product, and match the folding plane of products with different thicknesses.

[0036] The U-shaped bracket 5 includes a C-shaped folding plate 51 and a closing folding plate 52, wherein the closing folding plate 52 and the C-shaped folding plate 51 are adjustablely connected along the Y-axis. By adjusting along the Y-axis, the depth to which the front end of the product is inserted into the U-shaped bracket can be adjusted, thereby adapting to products of different specifications.

[0037] The front ends of the C-shaped folding plate 51 and the enclosing folding plate 52 are flared, which makes it easy for the front end of the product to be inserted into the U-shaped bracket 5.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A folding knife device that can be adjusted without stopping the machine, characterized in that: It includes two vertical plates (1) arranged at intervals and a horizontal plate (2) connecting the two vertical plates (1); It also includes a first folding knife assembly (3), which includes a first drive motor (31). The first output shaft (311) of the first drive motor (31) is connected to a first folding blade (32). The lower end of the first drive motor (31) is slidably connected to the horizontal plate (2) through a first slider (33). The upper end of the first drive motor (31) is provided with a first lead screw (34). The first lead screw (34) passes through the vertical plate (1) and is locked by a first nut. It also includes a second folding knife assembly (4), which includes a second drive motor (41). The second output shaft (411) of the second drive motor (41) is connected to a second folding blade (42). The lower end of the second drive motor (41) is slidably connected to the horizontal plate (2) through a second slider (43). The upper end of the second drive motor (41) is provided with a second lead screw (44). The second lead screw (44) passes through the vertical plate (1) and is locked by a second nut.

2. The folding knife device that can be adjusted without stopping the machine according to claim 1, characterized in that: The first folding blade assembly (3) further includes a first fixing sleeve (35) disposed on the outer periphery of the first output shaft (311), and a first protective cover (36) is fixedly disposed on the outer side of the first folding blade (32), and the first protective cover (36) is fixedly connected to the first fixing sleeve (35). The second folding blade assembly (4) further includes a second fixing sleeve (45) disposed on the outer periphery of the second output shaft (411), and a second protective cover (46) is fixedly disposed on the outer side of the second folding blade (42), and the second protective cover (46) is fixedly connected to the second fixing sleeve (45).

3. The folding knife device that can be adjusted without stopping the machine according to claim 2, characterized in that: The first fixed sleeve (35) is connected to the first output shaft (311) by a plurality of first bearings (37); the second fixed sleeve (45) is connected to the second output shaft (411) by a plurality of second bearings (47).

4. The folding knife device that can be adjusted without stopping the machine according to claim 1, characterized in that: A U-shaped bracket (5) is provided at the lower center of the first folding knife assembly (3) and the second folding knife assembly (4). A product conveyor belt (6) is provided at the lower end of the U-shaped bracket (5). The front end of the product is embedded in the U-shaped bracket (5) and the product is folded and abutted against the product conveyor belt (6) by the first folding knife assembly (3) and the second folding knife assembly (4).

5. The folding knife device that can be adjusted without stopping the machine according to claim 4, characterized in that: It also includes a front plate (7) fixedly connected to the vertical plate (1) and / or the horizontal plate (2), and the U-shaped bracket (5) and the front plate (7) are adjustablely connected along the X-axis and Z-axis directions.

6. The folding knife device that can be adjusted without stopping the machine according to claim 5, characterized in that: The U-shaped bracket (5) includes a C-shaped folding plate (51) and a closed folding plate (52), wherein the closed folding plate (52) and the C-shaped folding plate (51) can be adjustedly connected along the Y-axis.

7. A folding knife device that can be adjusted without stopping the machine, as described in claim 6, characterized in that: The front ends of the C-shaped folding plate (51) and the enclosing folding plate (52) are flared.

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