Tow breadth adjusting device

Abstract

The utility model discloses a tow breadth adjusting device which comprises a support, a driving piece, a first limiting assembly, a second limiting assembly and a driving piece controller, the support is arranged in front of an inlet of a glyceryl triacetate spraying box, and the driving piece, the first limiting assembly and the second limiting assembly are all arranged on the support. A channel allowing tows to pass through is formed between the first limiting assembly and the second limiting assembly, the first limiting assembly and the second limiting assembly are connected with the driving part, and the driving part is used for synchronously driving the first limiting assembly and the second limiting assembly to move in the face-to-face / back-to-back mode. The driving part controller is arranged on the opener support and connected with the driving part, and a control button is arranged on the driving part controller and used for controlling the driving part to work or stop. According to the tow breadth adjusting device, the tow breadth can be accurately adjusted under the non-stop condition, and the continuous operation of equipment and the stability of product quality are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette packaging machines, and particularly relates to a tow width adjusting device. Background Art

[0002] During the production process of filter rods, the hardness of the filter rods is a very important physical index. In order to better splice the filter rods and cigarettes during the processing, prevent the filter rods from being flattened during suction, and enable the cigarettes to have better appearance quality, the filter rods must have sufficient hardness.

[0003] The forming process of conventional filter rods is that the tow passes through triacetin spraying and is wrapped and formed by forming paper at the tobacco tongue. Therefore, the application amount of triacetin has a direct influence on the hardness of the filter rods. And the width of the tow directly affects the application amount and spraying uniformity of triacetin.

[0004] In the process quality standard, a standard range is set for the tow width of each machine type. During the actual production process, there are differences between each package of tow, and the tow width needs to be adjusted within the standard range to ensure that the application amount of triacetin meets the process standard. Currently, the observation position of the tow width is at the outlet of the spraying chamber, and the width is measured by a scale at the outlet. Since the light at this position is relatively dim, it is not convenient to read the scale on the triacetin spraying box, which is likely to cause reading errors. Moreover, the tow width shows a phenomenon of being narrow in the front and wide in the back before and after entering the triacetin spraying chamber. The scale is located at the outlet of the spraying chamber, and there is a large deviation between the tow width reflected at this position and the tow width at the triacetin application position. Content of the Utility Model

[0005] In view of the above problems, the utility model provides a tow width adjusting device, which realizes accurate and rapid adjustment of the tow width through an electric adjustment method, and ensures the continuous operation of the equipment and the stability of product quality.

[0006] Specifically, the utility model provides a tow width adjusting device, including:

[0007] A bracket, arranged in front of the inlet of the triacetin spraying box;

[0008] A driving member, arranged on the bracket;

[0009] A first limiting component, slidably arranged on the bracket and connected to the driving member;

[0010] A second limiting component, symmetrically arranged with the first limiting component and connected to the driving member. The driving member is used to synchronously drive the first limiting component and the second limiting component to move towards / away from each other; a channel for the tow to pass through is formed between the first limiting component and the second limiting component;

[0011] The driving part controller is arranged on the opener bracket and connected to the driving part, and is provided with control buttons thereon.

[0012] Further, the driving part is a through-type stepper motor, and both ends of its output lead screw are respectively connected to the first limit component and the second limit component.

[0013] Further, the first limit component includes:

[0014] The first sliding component is slidably arranged on the bracket;

[0015] The first limit block is fixedly connected to the first sliding component and is located below the bracket;

[0016] The second limit component includes:

[0017] The second sliding component is slidably arranged on the bracket;

[0018] The second limit block is fixedly connected to the second sliding component and is located below the bracket; a channel for the tow to pass through is formed between the first limit block and the second limit block.

[0019] Further, the first sliding component includes:

[0020] The first slider is slidably arranged on the bracket;

[0021] The first nut seat is fixed on the first slider and is connected to the output lead screw of the driving part;

[0022] The second sliding component includes:

[0023] The second slider is slidably arranged on the bracket;

[0024] The second nut seat is fixed on the second slider and is connected to the output lead screw of the driving part.

[0025] Further, the upper surface of the bracket is provided with scales.

[0026] Further, a connecting piece is arranged on the bracket, and the connecting piece is used to mount the bracket on the opener plate in front of the entrance of the triacetin spraying box.

[0027] Working principle:

[0028] During adjustment, the output lead screw 21 of the through-type stepper motor 2 is controlled to rotate through two control buttons ("+" and "-" buttons), thereby driving the first limit component 3 and the second limit component 4 to move towards / away from each other. Among them, the "+" button controls the separation of the first limit component 3 and the second limit component 4, and the "-" button controls the closing of the first limit component 3 and the second limit component 4, so that the width of the channel for the tow 62 to pass through between the first limit component 3 and the second limit component 4 increases or decreases, realizing the adjustment of the tow 62 width.

[0029] Compared with the prior art, the beneficial effects of the present utility model are:

[0030] (1) The tow width adjustment device provided by the present utility model can accurately adjust the tow width without stopping the machine, ensuring the continuous operation of the equipment and the stability of product quality.

[0031] (2) Adopting the adjustment method of the through-type stepper motor, the adjustment is convenient and the accuracy is relatively high. Description of the Drawings

[0032] Figure 1 It is a schematic structural diagram of the tow width adjustment device in Embodiment 1;

[0033] Figure 2 It is an exploded view of the tow width adjustment device in Embodiment 1;

[0034] Figure 3 It is a schematic operation diagram of the tow width adjustment device in Embodiment 1;

[0035] Figure 4 It is a usage state diagram of the tow width adjustment device in Embodiment 1.

[0036] Reference Numerals:

[0037] 1 - Bracket; 11 - Scale; 2 - Through-type stepper motor; 21 - Output lead screw; 22 - Ball nut; 23 - Support; 3 - First limit component; 31 - First nut seat; 32 - First slider; 33 - First limit block; 4 - Second limit component; 41 - Second nut seat; 42 - Second slider; 43 - Second limit block; 5 - Connecting piece; 6 - Triacetin spraying box; 61 - Loosening plate; 62 - Tow. Detailed Embodiment

[0038] The present utility model will be further described in detail below in conjunction with the drawings through specific embodiments.

[0039] Embodiment 1

[0040] As Figures 1-3As shown in the figure, this embodiment provides a tow width adjustment device, including: a bracket 1, a through-type stepper motor 2, a stepper driver (not shown), a first limit component 3, and a second limit component 4. The bracket 1 is in a frame shape, and U-shaped connectors 5 are provided at both ends thereof. The two connectors 5 are connected to the opening plate 61 in front of the inlet of the triacetin spraying box 6 at the card slot positions at both ends of the bracket, so as to mount the bracket 1 on the opening plate 61.

[0041] The through-type stepper motor 2 is mounted on the support 23. The support 23 is mounted on the middle part of the bracket 1 by 2 M3 screws. The output lead screw 21 of the through-type stepper motor 2 is a double-start ball screw with right and left hand threads, and a ball nut 22 is provided thereon. When the output lead screw 21 rotates, it drives the ball nut 22 to move along the axial direction of the output lead screw 21. The stepper driver is a two-phase digital stepper driver (HPD322), which is used to drive the through-type stepper motor 2. There are two buttons on it. The "+" button controls the separation of the first limit component 3 and the second limit component 4, and the "-" button controls the closing of the first limit component 3 and the second limit component 4.

[0042] Further, the first limit component 3 includes: a first sliding component and a first limit block 33. The first sliding component is composed of a first nut seat 31 at the upper part and a first slider 32 at the lower part. The first nut seat 31 is fixed on the first slider 32, and the first slider 32 is fixedly connected to the first limit block 33 by 4 M3 screws. Similarly, the second limit component 4 includes: a second sliding component and a second limit block 43. The second sliding component is composed of a second nut seat 41 and a second slider 42. A channel for the tow 62 to pass through is formed between the first limit block 33 and the second limit block 43. The two ball nuts 22 respectively pass through the first nut seat 31 and the second nut seat 32 and are connected by M3 screws. When the ball nut 22 moves, it drives the first limit block 33 and the second limit block 43 to move towards / away from each other, so as to adjust the width of the tow channel and realize the adjustment of the tow width.

[0043] A scale 11 is provided on the upper surface of the bracket. The zero point position of the scale is located at the center of the through-type stepper motor 2. The operator and the quality inspector can vertically see the reading, which is convenient for reading the distance between the first limit block 33 and the second limit block 43, and also ensures the accuracy of the tow width.

[0044] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention belongs, according to the idea of the present invention, several simple deductions, deformations or substitutions can also be made.

Claims

1. A tow width adjustment device, characterized in that: include: A support (1) is arranged in front of the entrance of the triacetin spray box (6); A driving member, arranged on the bracket (1); A first limiting component (3) is slidably disposed on the bracket (1) and is connected to the driving member; The second limiting assembly (4) is symmetrically arranged with the first limiting assembly (3) and connected to a driving member, wherein the driving member is used to synchronously drive the first limiting assembly (3) and the second limiting assembly (4) to move toward / away from each other; a channel for the thread bundle (62) to pass through is formed between the first limiting assembly (3) and the second limiting assembly (4); The driving member controller is arranged on the opener bracket and connected with the driving member, and a control button is arranged on the driving member.

2. The tow width adjustment device according to claim 1, characterized in that: The driving member is a through-type stepping motor (2), and the two ends of its output screw rod (21) are respectively connected to the first limit assembly (3) and the second limit assembly (4).

3. The tow width adjustment device according to claim 2, characterized in that: The first limiting component (3) comprises: A first sliding assembly, slidably arranged on the bracket (1); A first limiting block (33) is fixedly connected to the first sliding assembly and is located below the bracket (1); The second limiting component (4) comprises: A second sliding assembly, slidably arranged on the bracket (1); The second limiting block (43) is fixedly connected to the second sliding assembly and is located below the bracket (1); a channel for the thread bundle (62) to pass through is formed between the first limiting block (33) and the second limiting block (43).

4. The tow width adjustment device according to claim 3, characterized in that: The first sliding assembly comprises: A first sliding block (32) is slidably disposed on the bracket (1); A first nut seat (31) is fixed on the first sliding block (32) and connected to an output screw rod (21) of the through-type stepping motor (2); The second sliding assembly comprises: A second sliding block (42) is slidably disposed on the bracket (1); The second nut seat (41) is fixed on the second sliding block (42) and connected to the output screw rod (21) of the through-type stepping motor (2).

5. The tow width adjustment device according to claim 1, characterized in that: The upper surface of the bracket (1) is provided with a scale (11).

6. The tow width adjustment device according to claim 1, characterized in that: The support (1) is provided with a connecting piece (5), and the connecting piece (5) is used to install the support (1) on an opening plate (61) in front of the entrance of the triacetin spray box (6).

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