A fixing device for a sheet-shaped irregular strip box

Abstract

This utility model discloses a spring-loaded irregular-shaped carton fixing device, characterized in that: it includes a front baffle (1), the reserved width of the front baffle (1) and other fixed baffles is greater than the width of the irregular-shaped carton, a spring (2) is provided on the inner side of the front baffle (1), the spring (2) includes a fixed end (21) and a force-bearing end (22), a waist groove is provided at the fixed end (21), and the fixed end (21) of the spring (2) is fixed to the inner side of the front baffle (1) by adjusting screws (3); a clearance groove (4) is also provided on the front baffle (1), and the force-bearing end (22) of the spring (2) passes through the clearance groove (4). This utility model transforms the traditional rigid constraint into an elastic adaptive system, which significantly improves packaging efficiency and product qualification rate while simplifying the equipment debugging process, and provides key technical support for the automated production of irregular-shaped cigarette packs.

Description

Technical Field

[0001] This utility model relates to the field of tobacco packaging equipment technology, specifically to a spring-loaded irregular-shaped carton fixing device. Background Technology

[0002] In the tobacco packaging industry, irregularly shaped cigarette cartons, due to their unique shapes and diverse sizes, place higher demands on the adaptability of packaging equipment. Traditional cigarette carton packaging equipment typically uses rigid fixing devices to position the cartons, relying mainly on the rigid contact between the fixing lugs and the cartons to achieve positional constraint. However, this fixing method has significant technical drawbacks: on the one hand, when the fixing lugs are adjusted too tightly, the cartons will experience severe friction with the lugs during the pushing process, resulting in scratches or damage to the edges and corners of the cartons, seriously affecting the product's appearance quality; on the other hand, if the adjustment is too loose, the cartons will wobble within the workstation, affecting not only the positioning accuracy of subsequent packaging processes but also potentially causing the cartons to tip over during transport, reducing overall production efficiency. To address the aforementioned issues, existing technologies primarily attempt to improve the situation through the following two methods: First, they employ multiple sets of fixed lugs for distributed positioning, but this increases the complexity of equipment debugging and still fails to completely resolve the contradiction between scratches and shaking; Second, they introduce pneumatic or hydraulic drive devices to achieve dynamic clamping, but such systems suffer from drawbacks such as complex structure, high energy consumption, and high maintenance costs, making them unsuitable for high-speed continuous production packaging scenarios.

[0003] To address the above problems, this utility model provides a spring-loaded irregular-shaped carton fixing device. This device transforms the traditional rigid constraint into an elastic adaptive system, which simplifies the equipment debugging process while significantly improving packaging efficiency and product qualification rate, providing key technical support for the automated production of irregular-shaped cigarette packs. Utility Model Content

[0004] The purpose of this utility model is to provide a spring-loaded irregular-shaped carton fixing device to address the above-mentioned problems. This device transforms the traditional rigid constraint into an elastic adaptive system, which simplifies the equipment debugging process and significantly improves packaging efficiency and product qualification rate, providing key technical support for the automated production of irregular-shaped cigarette packs.

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

[0006] This utility model discloses a spring-loaded irregular-shaped carton fixing device, including a front baffle (1). The width of the front baffle (1) and the reserved width formed by the other fixing baffles are greater than the width of the irregular-shaped carton. A spring (2) is provided on the inner side of the front baffle (1). The spring (2) includes a fixed end (21) and a force-receiving end (22). The fixed end (21) of the spring (2) is fixed to the inner side of the front baffle (1) by an adjusting screw (3). A relief groove (4) is also provided on the front baffle (1). The force-receiving end (22) of the spring (2) passes through the relief groove (4).

[0007] Furthermore, the front baffle adopts a design with a reserved width 0.1-1mm greater than that of the carton, which is combined with other fixed baffles. Its guiding surface is provided with an arc-shaped transition zone at the force-bearing end with a radius of R3-R5mm, and the surface roughness is controlled below Ra1.6. This structure can disperse the impact force of the carton and form a "soft landing" effect in conjunction with the spring sheet.

[0008] The spring adopts an asymmetrical double-arc design, and the selected spring steel has a thickness of 0.3mm. The vertical height difference between the force-bearing end and the fixed end is 5-10mm.

[0009] Furthermore, the spring sheet is made of 60Si2Mn spring steel that has been quenched and tempered, with a hardness of HRC40-45.

[0010] The adjusting screw uses an M3×0.7 fine thread and connects to the fixed end of the spring piece via a nut pair. The theoretical adjustment stroke of 2.3mm corresponds to a displacement of 2.3mm at the force-bearing end, and the actual effective adjustment range is 0.1-2.3mm. A clearance groove with a length of 24mm and a width of 12mm is provided in the front baffle to ensure sufficient space for spring piece deformation.

[0011] In addition, nylon limiting strips are installed on both sides of the conveying channel, and their positioning surfaces form a convergence angle of 10°-15° with the initial position of the spring piece.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0013] 1. The present invention provides a spring-loaded irregular-shaped bar box fixing device, which is equipped with a spring to reduce impact load and effectively improve the surface quality of the bar box.

[0014] 2. The spring sheet of this utility model is made of spring steel, which increases the service life and reduces costs. Attached Figure Description

[0015] Figure 1 This is a front perspective view of a spring-loaded irregular-shaped strip box fixing device according to the present invention;

[0016] Figure 2 This is a perspective view of the back of the present invention;

[0017] Figure 3 This is a top view of the present invention;

[0018] Figure 4 This is a perspective view of the spring clip of this utility model;

[0019] Figure 5 This is a top view of the spring clip of this utility model.

[0020] Reference numerals: 1-front baffle, 2-spring piece, 21-fixed end, 22-force-bearing end, 3-adjusting screw, 4-relief groove. Detailed Implementation

[0021] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0023] like Figure 1-5 As shown, the mechanical structure assembly process of this device will be explained first:

[0024] S1. Front baffle 1 installation: Use the oblong hole of the front baffle 1 to simply fix it to the frame with bolts; check whether the arc transition surface is smooth. If there are obvious burrs or unevenness, simply sand it with sandpaper to make the surface as smooth as possible without sharp protrusions; attach a 0.5mm thick friction reducing pad to the inner wall of the relief groove, ensuring that it is firmly attached without air bubbles.

[0025] S2. Fixed end installation: Insert the fixed end 21 of the spring piece 2 into the T-slot inside the front baffle 1, keeping it roughly vertical. The verticality deviation should be controlled so that there is no obvious skewness when observed with the naked eye. A simple right-angle tool can be used to assist in the judgment. Pre-tighten the adjusting screw 3 so that there is a gap of about 0.1mm between the force-bearing end 22 of the spring piece 2 and the plane of the front baffle 1. Use this position as the reference position. Then use a ruler or a graduated tool to roughly check the height difference between the front and rear sections of the working face of the spring piece 2. Adjust it so that the height difference is within the range of 0.1–2.3mm.

[0026] Preload Adjustment Procedure:

[0027] S1. Basic settings: Release the spring. For the new specification bar, first loosen the adjusting screw 3 to completely release the pressure at the force-bearing end 22 of the spring 2; record the initial contact position. Slowly push the test bar through the channel and roughly observe and record the initial contact position between the bar and the spring 2.

[0028] S2. Gradual Adjustment: Screw Adjustment: Slowly screw the adjusting screw 3 into the screw hole, and perform 2-4 tests after each adjustment; Compression Judgment: When the compression of the spring 2 on the carton reaches about 1% of the carton thickness, lock the adjusting screw 3; Then verify the clamping force using a force measuring tool, such as a spring scale, to roughly verify the clamping force, making the clamping force within the range of 1.1-1.2 times the weight of the carton.

[0029] S3. Dynamic verification of conveyor belt start-up: Start the conveyor belt and gradually increase the speed to 20-25m / min, and observe the passage of the strip box to check for any jamming, skewing or other phenomena; roughly judge the vibration of the spring piece 2 by visual observation or simple touch, and it is qualified if there is no obvious violent vibration.

[0030] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed and specific, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A wad-shaped profile strip box fixing device characterized by: The front baffle (1) is provided. The reserved width of the front baffle (1) and other fixed baffles is greater than the width of the irregular strip box. A spring piece (2) is provided on the inner side of the front baffle (1). The spring piece (2) includes a fixed end (21) and a force-bearing end (22). A waist groove is provided at the fixed end (21). The fixed end (21) of the spring piece (2) is fixed to the inner side of the front baffle (1) by an adjusting screw (3). A relief groove (4) is also provided on the front baffle (1). The force-bearing end (22) of the spring piece (2) passes through the relief groove (4).

2. The fixture of claim 1, wherein: The guide surface of the front baffle (1) is provided with an arc-shaped transition structure, and the roughness of its contact surface with the carton is not greater than Ra1.

6.

3. The fixture of claim 1, wherein: The spring (2) adopts a double arc structure, and the vertical height difference between its force-bearing end (22) and fixed end (21) is 5-10mm.

4. The fixture of claim 1, wherein: The adjusting screw (3) is connected to the fixed end of the spring piece (2) through a threaded pair, and its adjustment stroke corresponds to the waist groove of the fixed end of the spring piece (2).

5. The fixture of claim 1, wherein: It also includes a limiting strip, which is set on both sides of the bar box conveying path, and its positioning surface forms a convergent guide channel with the initial position of the spring piece (2).

6. The fixing device according to claim 1, characterized in that: The spring piece (2) is made of spring steel and is quenched, with a hardness range of HRC45-50.

7. The fixing device according to claim 1, characterized in that: The front baffle (1) has a relief groove (4) at the force-bearing end (22) of the spring piece (2), and the area of ​​the relief groove (4) is larger than the area of ​​the force-bearing end (22).

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