Membrane belt negative pressure adsorption device

Abstract

The present application discloses a negative pressure adsorption device for a membrane strip, including a negative pressure tensioning seat, an exhaust pipe, a guide, a transmission mechanism and a shielding member. An adsorption chamber is formed in the negative pressure tensioning seat, and the exhaust pipe is installed on the negative pressure tensioning seat and communicated with the adsorption chamber; an arc-shaped outer wall is formed on the negative pressure tensioning seat, and a plurality of adsorption holes are formed on the arc-shaped outer wall, and the adsorption holes are communicated with the adsorption chamber; the membrane strip is covered on the arc-shaped outer wall and one end thereof is wound from one side of the guide through the bottom end of the guide to the other side; one end of the transmission mechanism is connected to the guide, and the other end is connected to the shielding member, and the shielding member is arranged in the adsorption chamber, and the membrane strip drives the guide to move so that the shielding member moves along the arc-shaped inner wall to shield the adsorption holes at different positions. The negative pressure adsorption force of the above-mentioned membrane strip negative pressure adsorption device can be dynamically adjusted with the speed of the online production equipment, and will not cause excessive stretching of the membrane strip, thereby ensuring the product quality of the composite filter rod.

Description

Technical Field

[0001] The present application relates to the technical field of negative pressure adsorption devices, and in particular to a membrane belt negative pressure adsorption device. Background Art

[0002] Cigarette filter rods are an important part of cigarettes, which can effectively intercept and filter smoke particles, and play a role in reducing tar and harm. Composite filter rods are one type of cigarette filter rods, which are two-stage or multi-stage composite filter rods made of two or more filter segments arranged and combined in a certain proportion wrapped with a transparent film band.

[0003] In the current online production equipment of composite filter rods, the tension control of the transparent membrane belt is generally achieved through a negative pressure adsorption device, which is installed on the membrane belt storage box. When the current negative pressure adsorption device is running at a low speed in the production equipment, the tensile deformation of the membrane belt is relatively small, which has little effect on the quality of the composite filter rod. However, once the production equipment speed is increased, the negative pressure adsorption cannot be dynamically adjusted with the speed, which is easy to cause excessive stretching of the membrane belt and affect the product quality of the composite filter rod. Utility Model Content

[0004] The utility model provides a negative pressure adsorption device for a membrane belt, so as to solve the technical problem in the prior art that the negative pressure adsorption device cannot be dynamically adjusted, thus causing excessive stretching of the membrane belt.

[0005] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is as follows:

[0006] The first aspect of the utility model provides a negative pressure adsorption device for a membrane tape, comprising a negative pressure tensioning seat, an air extraction pipe, a guide, a transmission mechanism and a shielding member, wherein an adsorption chamber is formed in the negative pressure tensioning seat, and the air extraction pipe is installed on the negative pressure tensioning seat and communicated with the adsorption chamber; an arc-shaped outer wall is formed on the negative pressure tensioning seat, and a plurality of adsorption holes are formed on the arc-shaped outer wall, and the adsorption holes are communicated with the adsorption chamber; the membrane tape is covered on the arc-shaped outer wall and one end of the membrane tape is wound from one side of the guide through the bottom end of the guide to the other side;

[0007] One end of the transmission mechanism is connected to the guide member, and the other end is connected to the shielding member. The shielding member is arranged in the adsorption chamber, and the membrane belt drives the guide member to move so that the shielding member moves along the arc-shaped inner wall to shield the adsorption holes at different positions.

[0008] Furthermore, the shielding member includes a swing shaft and a shielding plate, one end of the swing shaft is connected to the transmission mechanism, and the other end fixes the shielding plate, and the bottom end surface of the shielding plate moves along the arc-shaped inner wall.

[0009] Furthermore, there are gaps between the side walls of the swing shaft and the side walls of the shielding plate and the inner walls of the negative pressure tensioning seat respectively.

[0010] Furthermore, the transmission mechanism includes a rocker rod and a rotating shaft. The rocker rods are respectively arranged on both sides of the negative pressure tensioning seat. The rotating shaft passes through the adsorption chamber and is rotatably arranged on the negative pressure tensioning seat. Both ends of the rotating shaft are respectively connected to the rocker rod; one end of the rocker rod away from the rotating shaft is connected to the guide member; and the shielding member is installed on the rotating shaft.

[0011] Furthermore, the side dimension of one end of the rocker connected to the guide member is larger than the end surface dimension of the guide member so that the film strip can move between the two rockers.

[0012] Furthermore, the swing arm is fixedly sleeved on the end of the rotating shaft.

[0013] Furthermore, the membrane strip negative pressure adsorption device also includes a guide plate, and the guide plates are arranged on both sides of the arc-shaped outer wall to enable the membrane strip to move between the two guide plates.

[0014] In the membrane tape negative pressure adsorption device provided by the utility model, when the tension of the membrane tape changes, it will drive the guide member to move, and through the transmission mechanism, the shielding member moves along the arc-shaped inner wall to shield the adsorption holes at different positions, so as to adjust the adsorption force of the membrane tape to achieve balance. The negative pressure adsorption force of the membrane tape negative pressure adsorption device can be dynamically adjusted with the speed of the online production equipment, which will not cause excessive stretching of the membrane tape, thereby ensuring the product quality of the composite filter rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the structure of the membrane belt negative pressure adsorption device in the embodiment of the utility model;

[0017] Figure 2 It is a partial disassembly schematic diagram of the membrane belt negative pressure adsorption device in the embodiment of the utility model;

[0018] Figure 3 It is a cross-sectional view of the membrane belt negative pressure adsorption device in an embodiment of the utility model.

[0019] Reference numerals:

[0020] 1. Negative pressure tensioning seat; 2. Rocker arm; 3. Rotating shaft; 4. Exhaust pipe; 5. Guide plate; 6. Membrane belt; 7. Guide piece; 8. Adsorption hole; 9. Adsorption chamber; 10. Shielding plate. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0025] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0026] Reference Figures 1 to 3The embodiment of the present application provides a membrane tape negative pressure adsorption device, including a negative pressure tensioning seat 1, an exhaust pipe 4, a guide member 7, a transmission mechanism and a shielding member, an adsorption chamber 9 is formed in the negative pressure tensioning seat 1, the exhaust pipe 4 is installed on the negative pressure tensioning seat 1 and is connected with the adsorption chamber 9; an arc-shaped outer wall is formed on the negative pressure tensioning seat 1, and a plurality of adsorption holes 8 are formed on the arc-shaped outer wall, and the adsorption holes 8 are connected with the adsorption chamber 9; the membrane tape 6 is covered on the arc-shaped outer wall and one end thereof is wound from one side of the guide member 7 to the other side through the bottom end of the guide member 7; one end of the transmission mechanism is connected to the guide member 7, and the other end is connected to the shielding member, which is arranged in the adsorption chamber 9, and the membrane tape 6 drives the guide member 7 to move so that the shielding member moves along the arc-shaped inner wall to shield the adsorption holes 8 at different positions.

[0027] In the embodiment of the present application, the negative pressure tensioning seat 1 is fixed on the membrane belt storage box. An adsorption chamber 9 is formed in the negative pressure tensioning seat 1, and the air extraction pipe 4 is connected to the air extraction device. When the air extraction device is turned on, the adsorption chamber 9 is in a negative pressure state, thereby generating suction through the adsorption holes 8 on the arc-shaped outer wall to increase the friction between the negative pressure tensioning seat 1 and the membrane belt 6, so that the membrane belt 6 is in a tensioned state during operation.

[0028] In the embodiment of the present application, any structure that can realize transmission between the guide member 7 and the shielding member can be used as a transmission mechanism. The transmission mechanism enables the shielding member and the guide member 7 to move simultaneously, and the shielding member moves along the arc-shaped inner wall to shield the adsorption hole 8, thereby changing the suction force of the negative pressure adsorption device. The linkage structure of the shielding member and the guide member 7 can dynamically adjust the suction force of the negative pressure adsorption device, thereby meeting the speed change requirements of the online production equipment, and will not cause the problem of excessive stretching of the membrane belt 6.

[0029] In the embodiment of the present application, the film strip 6 is wound from the lower end of the guide 7 to the other side thereof, and the guide 7 can be a rotating shaft 3 or a roller. When the vacuum device is started to make the adsorption chamber 9 present a negative pressure state, the adsorption holes 8 adsorb the film strip 6, increasing the friction between the arc-shaped outer wall and the film strip 6, so that the film strip 6 is in a tensioned state during operation. If the tension is too large, the film strip 6 drives the guide 7 to move upward, referring to Figure 3 , the guide member 7 drives the shielding member to move upward through the transmission mechanism, so that the shielding member blocks part of the adsorption holes 8, reducing the adsorption resistance of the film strip 6, thereby achieving the effect of reducing the tension of the film strip 6. If the tension is reduced, the film strip 6 drives the guide member 7 to move downward, and the guide member 7 drives the shielding member to move downward through the transmission mechanism. At this time, the shielding member will not block the adsorption holes 8 or will block fewer adsorption holes 8, and the adsorption resistance of the film strip 6 will rise again until it returns to balance.

[0030] In the membrane belt negative pressure adsorption device of the embodiment of the present application, when the tension of the membrane belt 6 changes, it will drive the guide member 7 to move, and the shielding member will move along the arc inner wall through the transmission mechanism to shield the adsorption holes 8 at different positions, so as to adjust the adsorption force of the membrane belt 6 to achieve balance. The negative pressure adsorption force of the membrane belt negative pressure adsorption device can be dynamically adjusted with the speed of the online production equipment, which will not cause excessive stretching of the membrane belt 6, thereby ensuring the product quality of the composite filter rod.

[0031] In some embodiments, the shielding member includes a swing shaft and a shielding plate 10, one end of the swing shaft is connected to the transmission mechanism, and the other end fixes the shielding plate 10, and the bottom end surface of the shielding plate 10 moves along the arc-shaped inner wall. It can be understood that the swing shaft swings in the adsorption chamber 9 driven by the transmission mechanism, so that the shielding plate 10 moves along the arc-shaped inner wall. The bottom end surface of the shielding plate 10 blocks the adsorption holes 8 set on the arc-shaped wall, so that the position on the membrane strip 6 corresponding to the blocked adsorption holes 8 is not affected by the adsorption resistance. The shielding member similar to the pendulum structure cooperates with the transmission mechanism to conveniently change the force on the membrane strip 6.

[0032] Furthermore, there are gaps between the side walls of the swing shaft and the side walls of the shielding plate 10 and the inner wall of the negative pressure tensioning seat 1. The gaps between the above components prevent the shielding member from rubbing against the inner wall of the negative pressure chamber during rotation, reduce the wear of the components, and reduce noise.

[0033] In some embodiments, the transmission mechanism includes a swing rod 2 and a rotating shaft 3. The swing rods 2 are respectively arranged on both sides of the negative pressure tensioning seat 1. The rotating shaft 3 passes through the adsorption chamber 9 and is rotatably arranged on the negative pressure tensioning seat 1. The two ends of the rotating shaft 3 are respectively connected to the swing rod 2; one end of the swing rod 2 away from the rotating shaft 3 is connected to the guide member 7; and the shielding member is installed on the rotating shaft 3. In the embodiment of the present application, one end of the swing rod 2 is connected to the rotating shaft 3, and the other end is connected to the guide member 7, so that when the film belt 6 drives the guide member 7 to move up and down, the shielding member can be driven to move in the same direction through the swing rod 2 and the rotating shaft 3. The above transmission mechanism has a simple structure, effective linkage, and convenient connection.

[0034] Furthermore, the side dimension of one end of the swing rod 2 connected to the guide member 7 is larger than the end dimension of the guide member 7 so that the film strip 6 can move between the two swing rods 2. Figure 1 The swing rod 2 is long and has an arc-shaped end. The arc radius of the upper end of the swing rod 2 is greater than the radius of the end face of the guide 7, that is, the side dimension of the end of the swing rod 2 is greater than the end face dimension of the guide 7, so as to limit the film strip 6 and keep the film strip 6 between the two swing rods 2 to avoid deviation on the guide 7.

[0035] Furthermore, the swing rod 2 is fixedly sleeved on the end of the rotating shaft 3. Figure 1In the embodiment of the present application, a through hole or a blind hole is provided at the end where the rocker arm 2 is connected to the rotating shaft 3. The rotating shaft 3 extends into the through hole or the blind hole and is sleeved with the rocker arm 2. The connection relationship can be a threaded connection or other connection methods.

[0036] In some embodiments, the negative pressure adsorption device for the membrane strip further comprises a guide plate 5, and guide plates 5 are arranged on both sides of the arc-shaped outer wall so that the membrane strip 6 moves between the two guide plates 5. Figure 1 The guide plates 5 are arranged along both sides of the arc-shaped outer wall, and the guide plates 5 are also arc-shaped. The film strip 6 is located between the two guide plates 5, and the guide plates 5 limit the movement of the film strip 6 to prevent the film strip 6 from deflecting when moving.

[0037] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A membrane belt negative pressure adsorption device, characterized in that: It comprises a negative pressure tensioning seat, an exhaust pipe, a guide, a transmission mechanism and a shielding member, wherein an adsorption chamber is formed in the negative pressure tensioning seat, and the exhaust pipe is installed on the negative pressure tensioning seat and communicated with the adsorption chamber; an arc-shaped outer wall is formed on the negative pressure tensioning seat, and a plurality of adsorption holes are formed on the arc-shaped outer wall, and the adsorption holes are communicated with the adsorption chamber; a membrane belt covers the arc-shaped outer wall and one end of the membrane belt is wound from one side of the guide through the bottom end of the guide to the other side; One end of the transmission mechanism is connected to the guide member, and the other end is connected to the shielding member. The shielding member is arranged in the adsorption chamber, and the membrane belt drives the guide member to move so that the shielding member moves along the arc-shaped inner wall to shield the adsorption holes at different positions.

2. The membrane belt negative pressure adsorption device according to claim 1, characterized in that: The shielding member includes a swing shaft and a shielding plate, one end of the swing shaft is connected to the transmission mechanism, and the other end fixes the shielding plate, and the bottom end surface of the shielding plate moves along the arc-shaped inner wall.

3. The membrane belt negative pressure adsorption device according to claim 2, characterized in that: There are gaps between the side wall of the swing shaft, the side wall of the shielding plate and the inner wall of the negative pressure tensioning seat respectively.

4. The membrane tape negative pressure adsorption device according to any one of claims 1 to 3, characterized in that: The transmission mechanism includes a rocker rod and a rotating shaft. The rocker rods are respectively arranged on both sides of the negative pressure tensioning seat. The rotating shaft passes through the adsorption chamber and is rotatably arranged on the negative pressure tensioning seat. Both ends of the rotating shaft are respectively connected to the rocker rod; one end of the rocker rod away from the rotating shaft is connected to the guide member; and the shielding member is installed on the rotating shaft.

5. The membrane belt negative pressure adsorption device according to claim 4, characterized in that: The side dimension of one end of the rocker connected to the guide member is larger than the end surface dimension of the guide member so that the film strip can move between the two rockers.

6. The membrane belt negative pressure adsorption device according to claim 4, characterized in that: The swing rod is fixedly sleeved on the end of the rotating shaft.

7. The membrane tape negative pressure adsorption device according to any one of claims 1 to 3, characterized in that: The membrane strip negative pressure adsorption device also includes a guide plate, and the guide plates are arranged on both sides of the arc-shaped outer wall to enable the membrane strip to move between the two guide plates.

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