Adsorption roller

Abstract

An adsorption roller is provided with roller surface air suction holes with different air suction durations, a fixed air suction core pipe is sleeved with a roller body, a sealing block with the top face in close contact with the inner wall of the roller body is fixed to the air suction core pipe, and an open hole communicated with the air suction core pipe is formed in the top face of the sealing block. The roller surface air suction holes with different air suction durations respectively form inner wall holes which are separated from one another and are positioned on different vertical axial surfaces on the inner wall of the roller body, and each inner wall hole corresponds to an open hole which is positioned on the same vertical axial surface as the inner wall hole and is formed in the top surface of the sealing block; the open holes corresponding to the inner wall holes corresponding to the roller surface air suction holes have different lengths in the circumferential direction of the roller body. The suction roller has the advantages that all the roller surface suction holes with different suction durations can quickly form enough suction force, so that the rotation speed of the suction roller can be increased under the condition that all the roller surface suction holes with different suction durations can quickly form suction force in a short time, and the requirement of high-speed operation of the suction roller is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the adsorption roller that applies in paper processing equipment among paper towel folding machine, rewinding machine etc. BACKGROUND

[0002] Adsorption roller is a kind of rotating roller with suction holes on the roller surface, and is widely applied in various paper processing equipment such as paper towel folding machine and rewinding machine. In some applications, different suction holes on different roller surfaces are required to have different suction time during one rotation of the adsorption roller. In order to realize the function of different suction time of two parts of the roller surface suction holes, the existing adsorption roller sets two suction paths separated from each other, and controls the suction time of different roller surface suction holes through the two suction paths. Specifically, one of the suction paths is a gas flow channel along the length of the roller body opened in the thickness of the roller body, and a part of the roller surface suction holes are communicated with the gas flow channel. The port of the gas flow channel is opened on the end face of the roller body, and a fixed and immovable air suction cover locally shielding the end face of the roller body is arranged close to the end face of the roller body, and the air suction cover is always communicated with the vacuum equipment to maintain a negative pressure state. With the rotation of the adsorption roller, whenever the port of the gas flow channel is located in the area shielded by the air suction cover, the gas flow channel is communicated with the air suction cover to form a negative pressure, and the roller surface suction holes communicated with the gas flow channel start to suck air; whenever the port of the gas flow channel leaves the area shielded by the air suction cover, the gas flow channel is communicated with the atmosphere to lose the negative pressure, and the roller surface suction holes communicated with the gas flow channel stop sucking air. In this way, the size of the shielding area of the air suction cover on the end face of the roller body can control the suction time of the part of the roller surface suction holes communicated with the gas flow channel.

[0003] However, since the gas flow channel needs to be periodically communicated with the atmosphere, the gas flow channel will experience the process of losing negative pressure and re-establishing negative pressure during one rotation of the adsorption roller, which results in that the roller surface suction holes communicated with the gas flow channel cannot form suction in a short time, and limits the increase of the rotation speed of the adsorption roller. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the defects of the prior art, and provides an adsorption roller capable of forming suction in a short time for all roller surface suction holes with different suction time.

[0005] The utility model discloses a kind of adsorption rollers, including sleeve-like roller body, different adsorption time length of adsorption hole is equipped in roll surface, adsorption core pipe is sleeved in the roller body and is fixed, sealing block is equipped between adsorption core pipe and the inner wall of roller body, sealing block is fixed on adsorption core pipe, the top surface of sealing block is in close contact with the inner wall of roller body, the top surface of sealing block is equipped with opening, opening is communicated to the lumen of adsorption core pipe by passing through sealing block, in particular, different adsorption time length of adsorption hole is respectively through roller body wall surface to form the inner wall hole of each other separation in the inner wall of roller body, the inner wall hole of each other separation is located on different vertical axial surface of roller body, each inner wall hole has the opening in the top surface of sealing block with its corresponding in the same vertical axial surface of roller body, each opening corresponding to each inner wall hole corresponding to each adsorption hole of different adsorption time length has different length in the top surface of sealing block along the circumferential direction of roller body.

[0006] As the best mode, the adsorption hole is divided into multiple groups, and the adsorption holes in each group are arranged in a row along the axial direction of the roller body, and each group of adsorption holes is composed of the adsorption holes with different adsorption time lengths.

[0007] As the best mode, the sealing block corresponding to each group of adsorption holes has only one.

[0008] As the best mode, the openings with different lengths on the top surface of each sealing block are combined into a large hole transversely.

[0009] As the best mode, the adsorption holes in the row are arranged into multiple rows along the circumferential direction of the roller body.

[0010] The utility model discloses the advantage is discarded the air flow channel of needing periodicity and atmosphere communication opened in the wall thickness of roller body in the prior art, all adsorption holes with different adsorption time lengths are formed by adsorption core pipe that does not need periodicity and atmosphere communication to keep the negative pressure relatively stably, so that all adsorption holes with different adsorption time lengths can quickly form sufficient suction force, so that the adsorption roller can improve the rotating speed under the condition that all adsorption holes with different adsorption time lengths can quickly form suction force in a short time, to meet the demand of high-speed rotation of the adsorption roller. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is the structure schematic diagram of the utility model embodiment one;

[0012] Figure 2 is Figure 1 the A-A section view of;

[0013] Figure 3 is Figure 1BB cross-sectional view;

[0014] Figure 4 yes Figure 1 CC cross-sectional view;

[0015] Figure 5 It will Figure 1 The structural diagram of the roller body is shown after it is cut along the axis;

[0016] Figure 6 This is a schematic structural diagram of the second embodiment of the present utility model;

[0017] Figure 7 This is a schematic structural diagram of the third embodiment of the present utility model;

[0018] Figure 8 This is a schematic structural diagram of a fourth embodiment of the present utility model;

[0019] Figure 9 yes Figure 8 DD cross-sectional view;

[0020] Figure 10 yes Figure 8 EE cross-sectional view;

[0021] Figure 11 This is a schematic structural diagram of a fifth embodiment of the present invention;

[0022] Figure 12 This is a structural diagram of the sixth embodiment of the present utility model;

[0023] Figure 13 It will Figure 12 The structural diagram of the roller body is shown after it is cut along the axis;

[0024] Figure 14 This is a structural diagram of the seventh embodiment of the present utility model;

[0025] Figure 15 yes Figure 14 Stereoscopic image of

[0026] Figure 16 This is a schematic structural diagram of an eighth embodiment of the present utility model;

[0027] Figure 17 yes Figure 16 Stereoscopic image of

[0028] Figure 18 This is a schematic structural diagram of a ninth embodiment of the present invention;

[0029] Figure 19 It is a structural diagram of the tenth embodiment of the present utility model. DETAILED DESCRIPTION

[0030] For the purpose of facilitating the understanding of the present application, a more comprehensive description will be made in conjunction with the drawings. The drawings show the preferred embodiments of the present application. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. The purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Embodiment one

[0031] One embodiment of the adsorption roller according to the present application is shown in Figure 1 . Figure 1 Only a small section of the adsorption roller is shown. Meanwhile, reference is made to Figure 1 , Figure 2 , the adsorption roller comprises a sleeve-shaped roller body 1, and a fixed adsorption core pipe 2 is sleeved in the roller body 1. A sealing block 3 is arranged between the adsorption core pipe 2 and the inner wall of the roller body 1, the sealing block 3 is fixed on the outer wall of the adsorption core pipe 2, and the top surface of the sealing block 3 is in close contact with the inner wall of the roller body 1. The central axis of the adsorption core pipe 2 and the central axis of the roller body 1 can be collinear or non-collinear.

[0032] Reference is made to Figure 1 , two roller surface adsorption holes 4, 5 with different adsorption durations are arranged on the roller surface of the roller body 1. Meanwhile, reference is made to Figure 1 , Figure 3 , the roller surface adsorption hole 4 penetrates the roller body wall surface to form an inner wall hole 6 in the inner wall of the roller body. Meanwhile, reference is made to Figure 1 , Figure 4 , the other roller surface adsorption hole 5 penetrates the roller body wall surface to form another inner wall hole 7 in the inner wall of the roller body. The two inner wall holes 6, 7 are separated from each other and are respectively located on the vertical axial surface I-I and the vertical axial surface II-II of the roller body.

[0033] Meanwhile, reference is made to Figure 1 , Figure 5 , the top surface of the sealing block 3 is provided with openings 8, 9, and the openings 8, 9 penetrate the sealing block and communicate to the lumen of the adsorption core pipe 2. Meanwhile, reference is made to Figure 1 , Figure 3 , Figure 5 , the inner wall hole 6 corresponds to the opening 8, and both of them are located on the vertical axial surface I-I of the roller body, so that the inner wall hole 6 can communicate with the opening 8 and further communicate with the adsorption core pipe 2 every time when passing through the top surface of the sealing block 3 with the rotation of the roller body 1 (since the top surface of the sealing block 3 is in close contact with the inner wall of the roller body 1, the profile line of the opening 8 in Figure 3 is coincided with the profile line of the inner wall of the roller body 1). Meanwhile, reference is made to Figure 1 , Figure 4 , Figure 5The inner wall hole 7 corresponds to the opening 9, and the two are located on the other vertical axis surface II-II of the roller body, so that the inner wall hole 7 can communicate with the opening 9 and then with the suction core tube 2 whenever it passes through the top surface of the sealing block 3 as the roller body 1 rotates (because the top surface of the sealing block 3 is in close contact with the inner wall of the roller body 1, so Figure 4 The contour line of the opening 9 in the roller body coincides with the contour line of the inner wall of the roller body 1). Figure 1 、 Figure 5 As shown, since the opening 8 and the opening 9 have different lengths on the top surface of the sealing block 3 along the circumferential direction of the roller body, the opening 8 is shorter than the opening 9, so the time for the inner wall hole 6 to pass through the opening 8 is shorter, and the time for the inner wall hole 7 to pass through the opening 9 is longer, so that the suction time of the roller surface suction hole 4 corresponding to the inner wall hole 6 is shorter, and the suction time of the roller surface suction hole 5 corresponding to the inner wall hole 7 is longer.

[0034] When the adsorption roller is working, the fixed suction core tube 2 remains connected to the vacuum equipment. As the roller body 1 rotates, every time the inner wall hole 6 passes through the top surface of the sealing block 3, the roller surface suction hole 4 is connected to the tube cavity of the suction core tube 2, and the roller surface suction hole 4 inhales air. At other times, the roller surface suction hole 4 stops inhaling air. Similarly, every time the inner wall hole 7 passes through the top surface of the sealing block 3, the roller surface suction hole 5 is connected to the tube cavity of the suction core tube 2, and the roller surface suction hole 5 inhales air. At other times, the roller surface suction hole 5 stops inhaling air. Since the two roller surface suction holes 4 and 5 with different suction time lengths both rely on the suction core tube 2 to form a negative pressure, and the suction core tube 2 is always connected to the vacuum equipment to maintain a relatively stable and sufficient negative pressure, the two roller surface suction holes 4 and 5 with different suction time lengths can quickly form sufficient suction, which is beneficial to increase the rotation speed of the roller body 1. Example 2

[0035] See also Figure 6 The characteristic of this embodiment is that the two roller surface suction holes 4 and 5 with different suction time are located on the same vertical axis plane Ⅰ-Ⅰ, but the inner wall holes 6 and 7 formed by the two roller surface suction holes penetrating into the inner wall of the roller body are still located on two different vertical axis planes Ⅰ-Ⅰ and Ⅱ-Ⅱ respectively. Figure 6 The other structures shown are Figure 1 This embodiment is used to illustrate that the present invention does not require that the roller surface suction holes with different suction time lengths must be located on different vertical axis planes, but only requires that the inner wall holes corresponding to the roller surface suction holes with different suction time lengths be located on different vertical axis planes. Example 3

[0036] See also Figure 7The inner wall holes 6a and 6b corresponding to the two roller surface suction holes 4a and 4b with the same suction time are located on the vertical axis plane Ⅰ-Ⅰ, and the inner wall holes 7a and 7b corresponding to the other two roller surface suction holes 5a and 5b with the same suction time are located on another vertical axis plane Ⅱ-Ⅱ. Figure 1 This embodiment is used to illustrate that the utility model can have two or more roller surface suction holes with the same suction time, and the inner wall holes corresponding to the roller surface suction holes are located on the same vertical axis plane. Example 4

[0037] See also Figure 8 、 Figure 9 In this embodiment, based on the third embodiment, the two inner wall holes 6a and 6b corresponding to the two roller surface suction holes 4a and 4b with the same suction time length and located on the same vertical axis plane Ⅰ-Ⅰ are connected in parallel to the same inner wall hole 6c. Figure 8 、 Figure 10 The other two roller surface suction holes 5a, 5b with the same suction time corresponding to the two inner wall holes 7a, 7b located on the same vertical axis plane II-II are connected in parallel to the same inner wall hole 7c. Figure 1 This embodiment is used to illustrate that if the inner wall holes corresponding to two or more roller surface suction holes with the same suction time are located on the same vertical axis plane, then these inner wall holes can be connected in parallel to the same inner wall hole. Example 5

[0038] See also Figure 11 The difference between this embodiment and the first embodiment is that Figure 5 The sealing block 3 shown is divided into two sealing blocks 3a and 3b, so that each sealing block has only one opening on its top surface. The other structures of this embodiment are the same as those of the first embodiment. This embodiment is used to illustrate that each sealing block can have only one opening on its top surface. Example 6

[0039] See also Figure 12 、 Figure 13 The difference between this embodiment and the first embodiment is that the Figure 1 and Figure 5 The two openings 8 and 9 of different lengths on the top surface of the sealing block are laterally merged into a large hole 10 roughly shaped like a "7." The other structures of this embodiment are the same as those of the first embodiment. The length of the merged large hole 10 remains unchanged at the location of the original two openings 8 and 9. This does not change the length of time that the two inner wall holes 6 and 7 pass through the large hole 10, nor does it change the suction time of the two roller surface suction holes 4 and 5. This embodiment illustrates that the openings of different lengths on the top surface of the sealing block can be laterally merged into a single large hole. Example 7

[0040] Referring to Figure 14 , Figure 15 , the embodiment is equivalent to repeating the structure shown in Figure 12 along the axial direction of the roller body 1. Figure 15 Each frame drawn by the imaginary line in the figure represents a group of roll surface suction holes. Each group of roll surface suction holes is composed of two roll surface suction holes 4, 5 with different suction durations. Each group of roll surface suction holes has a sealing block 3 corresponding thereto. The embodiment is used to illustrate that the roll surface suction holes can be divided into multiple groups, the multiple groups of roll surface suction holes are arranged in a row along the axial direction of the roller body, each group of roll surface suction holes is composed of roll surface suction holes with different suction durations. Each group of roll surface suction holes has a sealing block corresponding thereto. In the embodiment, each group of roll surface suction holes has only one sealing block corresponding thereto, which is the best embodiment and the structure is the simplest. As another alternative embodiment, each group of roll surface suction holes can also have multiple sealing blocks corresponding thereto. For example, each sealing block 3 in Figure 14 is replaced by two sealing blocks 3a, 3b shown in Figure 11 , thereby forming a structure in which each group of roll surface suction holes corresponds to two sealing blocks.

[0041] It should be noted that the number of roll surface suction holes contained in each group of roll surface suction holes can not be equal, which is determined according to the actual application requirements of the adsorption roller. Embodiment Eight

[0042] The structures described in the above embodiments can be arbitrarily combined to form new structures. For example, each group of roll surface suction holes and the corresponding inner wall hole shown in Figure 14 are replaced by the roll surface suction holes and the inner wall hole shown in Figure 8 of Embodiment Four, thereby forming the embodiment shown in Figure 16 and Figure 17 . Figure 16 Each sealing block 3 in Figure 14 is the same as the sealing block 3 in Figure 16 , a group of roll surface suction holes 4a, 4b, 5a, 5b and an inner wall hole 6c, 7c corresponding to each sealing block 3 in Figure 8 are four roll surface suction holes 4a, 4b, 5a, 5b and an inner wall hole 6c, 7c in Figure 17 . Each frame drawn by the imaginary line in the figure represents a group of roll surface suction holes, each group of roll surface suction holes is composed of four roll surface suction holes 4a, 4b, 5a, 5b. Embodiment Nine

[0043] On the basis of Figure 16 , the whole row of roll surface suction holes composed of multiple groups of roll surface suction holes arranged along the axial direction of the roller body in Figure 16 is arranged into multiple rows along the circumferential direction of the roller body, thereby formingFigure 18 The suction roller shown. Figure 18 Each frame drawn with a dotted line represents a group of suction holes on the surface of the roller, and each group of suction holes on the surface of the roller is composed of four suction holes 4a, 4b, 5a, 5b, which are the same as those in Embodiment Eight. Embodiment Ten

[0044] Figure 19 The suction roller shown can be used as a folding roller of a paper towel folding machine. The suction roller has the structure of the folding roller of the paper towel folding machine, including a convex knife 11, a V-shaped groove 12, and a ring groove 13 for accommodating a fork. Figure 18 Two suction holes 4a, 4b in each group of suction holes on the surface of the roller have the same suction time and are located on both sides of the convex knife, and the other two suction holes 5a, 5b in each group of suction holes on the surface of the roller have the same suction time and are located on both sides of the V-shaped groove. The suction time of the suction holes 4a, 4b is shorter than that of the suction holes 5a, 5b, which meets the use requirements of the folding roller.

[0045] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the protection scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. The protection scope of the present application should be subject to the appended claims.

Claims

1. A suction roller, comprising a sleeve-shaped roller body, with roller surface suction holes having different suction durations provided on the roller surface, a fixed suction core tube sleeved within the roller body, a sealing block provided between the suction core tube and the inner wall of the roller body, the sealing block being fixed to the suction core tube, the top surface of the sealing block being in close contact with the inner wall of the roller body, an opening provided on the top surface of the sealing block, the opening penetrating the sealing block and communicating with the lumen of the suction core tube, wherein the roller is characterized by: The roller surface suction holes with different suction time lengths respectively pass through the roller body wall surface to form mutually separated inner wall holes in the inner wall of the roller body, the mutually separated inner wall holes are located on different vertical axial planes of the roller body, each inner wall hole has the corresponding opening on the top surface of the sealing block which is located on the same vertical axial plane of the roller body, and the openings corresponding to the inner wall holes corresponding to the roller surface suction holes with different suction time lengths have different lengths on the top surface of the sealing block along the circumferential direction of the roller body.

2. A suction roll as claimed in claim 1, characterized in that: The roller surface suction holes are divided into multiple groups, the multiple groups of roller surface suction holes are arranged in a row along the axial direction of the roller body, each group of roller surface suction holes is composed of the roller surface suction holes with different suction time lengths, and each group of roller surface suction holes has the corresponding sealing block.

3. A suction roll as claimed in claim 2, characterized in that: The sealing block corresponding to each group of roller surface suction holes is only one.

4. A suction roll as claimed in claim 3, characterized in that: The openings with different lengths on the top surface of each sealing block are transversely combined into a large opening.

5. A suction roll as claimed in claim 2, characterized in that: The row of roller surface suction holes is arranged into multiple rows along the circumferential direction of the roller body.

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