Paper tube shearing and positioning auxiliary device

Abstract

The utility model discloses a paper tube shearing and positioning auxiliary device which comprises a base, a clamping block and a positioning screw, the base is annular, a threaded connector is arranged on one side of the base, a plurality of positioning protruding blocks are evenly distributed on the other side of the base, a through inner threaded hole is formed in the middle of each positioning protruding block, and the inner threaded hole is communicated with the clamping block. The number of the clamping blocks is the same as that of the positioning convex blocks on the base, the inner side of each clamping block is an arc surface, each clamping block comprises a bottom plate and a clamping head, the center line of the bottom of each bottom plate is provided with positioning grooves matched with the positioning convex blocks, and the bottom plate is provided with internal threaded holes penetrating through the positioning grooves from the outer side in the direction of the center line of the bottom plate; when all the clamping blocks are installed on the base in a one-to-one correspondence mode, the diameter of the circular outline formed by all the cambered surfaces is smaller than the diameter of the inner circle of the base. By means of the mode, the paper tube shearing quality can be effectively improved, the section is smoother and smoother, and the problems of burrs, turnups and the like are reduced.

Description

Technical Field

[0001] The utility model relates to the field of production equipment, in particular to a paper tube shearing and positioning auxiliary device. Background Art

[0002] Paper tube is a tubular component made of multiple layers of paper, which is widely used in chemical fiber, film, printing and packaging industries. This product is installed on the paper tube production equipment. During the continuous production of paper tube, the kraft paper is glued and overlapped on the metal reel at a certain angle. The force of the reel rotation is used to make the rolled paper tube rotate and stretch continuously along the reel direction, and then the cutter is used to cut it according to the length required by the process. In the actual cutting process, due to the certain distance between the cutter and the end of the reel, the cutting position of the paper tube will be offset downward, and the cut surface will not be smooth enough. Utility Model Content

[0003] The main technical problem solved by the utility model is to provide a paper tube shearing positioning auxiliary device, which can improve the quality of the cut surface when the paper tube is sheared.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a paper tube shearing positioning auxiliary device, the paper tube shearing positioning auxiliary device comprises: a base, a clamping block and a positioning screw, the base is annular, one side of the base is provided with a threaded connector, and the other side is evenly provided with a plurality of positioning protrusions, each positioning protrusion is provided with a through internal threaded hole in the middle position, there are a plurality of clamping blocks, the number of which is the same as the number of positioning protrusions on the base, the inner side of the clamping block is an arc surface, when all the clamping blocks are spliced ​​together, all the arc surfaces are spliced ​​together to form a through through hole, the diameter of the through hole is smaller than the inner diameter of the base, the clamping block comprises a bottom plate and a clamping head The chuck is arranged on the top of the base plate, and a positioning groove matching the positioning protrusion is provided on the bottom center line of the base plate. The base plate is provided with an internal threaded hole passing through the positioning groove from the outside along the center line direction of the base plate. When the clamp is installed on the base, the positioning protrusion is just stuck in the positioning groove, and the internal threaded hole on the positioning protrusion coincides with the center line of the internal threaded hole passing through the positioning groove. The positioning screw passes through the positioning protrusion and the positioning groove to fix the clamp on the base; when all the clamps are installed on the base one by one, the diameter of the circular contour formed by all the arc surfaces together is smaller than the diameter of the inner circle of the base.

[0005] In a preferred embodiment of the present invention, there are a plurality of positioning grooves disposed on the bottom midline of the bottom plate.

[0006] In a preferred embodiment of the present invention, the number of the clamping blocks is not less than 3.

[0007] In a preferred embodiment of the present invention, a plurality of rollers are installed on the inner arc surface of the chuck, and the high points of the roller surfaces exceed the arc surface.

[0008] The wheel surface of the roller is a rubber surface, and the width of the wheel surface of the roller is not less than 1 cm.

[0009] The beneficial effect of the utility model is that the utility model is installed on the end of the reel of the paper tube machine, clamped on the outside of the paper tube, and the end face of the clamp is flush with the end of the reel, and the position of the cutter is also flush with the end face of the clamp during shearing. In this way, under the simultaneous clamping of the reel and the inside and outside of the clamp, the paper tube cross-section is more stable during shearing, and the tube body will not swing under force, thereby effectively improving the quality of the cross-section, making the cross-section smoother and flatter, and reducing the occurrence of burrs and flanging problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a side view structural schematic diagram of a preferred embodiment of the utility model;

[0011] Figure 2 is a schematic diagram of the top view of the base in the illustrated embodiment;

[0012] Figure 3 is a schematic diagram of the top view of the positioning block in the illustrated embodiment;

[0013] Figure 4 is a bottom structural schematic diagram of the positioning block in the illustrated embodiment;

[0014] Figure 5 is a schematic side view of the positioning block in the illustrated embodiment;

[0015] The markings of the components in the accompanying drawings are as follows:

[0016] 1. Base, 2. Clamp, 3. Positioning screw;

[0017] 101. Threaded connector, 102. Positioning protrusion;

[0018] 201. Base plate, 202. Clamp, 203. Positioning groove, 204. Roller, 205. Threaded hole. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0020] See also Figure 1 and Figure 2 , the utility model embodiment includes:

[0021] A paper tube shearing positioning auxiliary device, the paper tube shearing positioning auxiliary device comprising: a base 1, a clamping block 2 and a positioning screw 3, the base 1 is annular, a threaded connector 101 is provided on one side of the base 1, and four positioning protrusions 102 are evenly arranged on the other side, each positioning protrusion 102 is provided with a through internal threaded hole in the middle position, and there are four clamping blocks 2, the number of which is the same as the number of positioning protrusions 102 on the base 1; the inner side of the clamping block 2 is an arc surface, and when the four clamping blocks 2 are spliced ​​together, all the arc surfaces are spliced ​​together to form a through through hole, the diameter of the through hole is smaller than the inner diameter of the base 1, the clamping block 2 comprises a bottom plate 201 and a clamping head 202, the clamping head 202 is arranged on the top of the bottom plate 201, and the bottom plate 2 01 is provided with a positioning groove 203 matching the positioning protrusion 102 on the bottom center line, and the bottom plate 201 is provided with an internal threaded hole passing through the positioning groove 203 from the outside along the center line direction of the bottom plate 201. When the clamp 2 is installed on the base 1, the positioning protrusion 102 is just stuck in the positioning groove 203, and the internal threaded hole on the positioning protrusion 102 coincides with the center line of the internal threaded hole passing through the positioning groove 203. The positioning screw 3 passes through the positioning protrusion 102 and the positioning groove 203 to fix the clamp 2 on the base 1; when all the clamps 2 are installed on the base 1 one by one, the diameter of the circular contour formed by the arc surface of all the clamps 1 is smaller than the diameter of the inner circle of the base 1. There are 3 positioning grooves 203 on the bottom center line of the bottom plate 201, so that the production needs of paper tubes with different diameters can be met by adjusting the insertion position of the positioning protrusion 102.

[0022] Two rollers 204 are installed on the inner curved surface of the chuck 202, and the high point of the roller 204 exceeds the curved surface. This can prevent the inner wall of the curved surface from directly contacting the rotating paper tube surface, and change the surface contact to rolling contact, effectively preventing scratches on the paper tube surface. The wheel surface of the roller 204 is a rubber surface. The rubber surface is elastic, which can have a certain clamping force on the one hand, improve the stability during shearing, and will not cause damage to the surface of the paper tube on the other hand. In addition, the wheel width of the roller 204 is not less than 1 cm, generally 3 cm, which can reduce the pressure at the contact position and further reduce the generation of indentations.

[0023] This product is sleeved on the end of the reel of the paper tube production line. The gear position can be adjusted according to the size of the paper tube so that the roller is lightly clamped on the outer surface of the paper tube and the reel is supported on the inner side of the paper tube. In this way, when the extended paper tube length reaches the length required by the process, the cutter is aligned with the end face of the chuck and cuts down, and the paper tube cut position is not deformed and has no burrs.

[0024] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A paper tube cutting and positioning auxiliary device, characterized in that: The paper tube shearing positioning auxiliary device comprises: a base, a clamping block and a positioning screw, the base is annular, a threaded connector is provided on one side of the base, and a plurality of positioning protrusions are evenly arranged on the other side, and a through internal threaded hole is provided in the middle position of each positioning protrusion, the clamping blocks are in total, and the number is the same as the number of positioning protrusions on the base, the inner side of the clamping block is an arc surface, and when all the clamping blocks are spliced ​​together, all the arc surfaces are spliced ​​together to form a through through hole, and the diameter of the through hole is smaller than the inner diameter of the base, the clamping block comprises a bottom plate and a clamping head, the clamping head is arranged on the top of the bottom plate, a positioning groove matching the positioning protrusion is provided on the bottom center line of the bottom plate, and the bottom plate is provided with an internal threaded hole passing through the positioning groove from the outside along the center line direction of the bottom plate, when the clamping block is installed on the base, the positioning protrusion is just stuck in the positioning groove, the internal threaded hole on the positioning protrusion coincides with the center line of the internal threaded hole passing through the positioning groove, and the positioning screw passes through the positioning protrusion and the positioning groove to fix the clamping block on the base; When all the clamping blocks are mounted on the base in a one-to-one correspondence, the diameter of the circular contour formed by all the arc surfaces together is smaller than the diameter of the inner circle of the base.

2. The paper tube cutting positioning auxiliary device according to claim 1, characterized in that: There are a plurality of positioning grooves arranged on the bottom midline of the bottom plate.

3. The paper tube cutting positioning auxiliary device according to claim 1, characterized in that: The number of the clamping blocks is not less than 3.

4. The paper tube cutting positioning auxiliary device according to claim 1, characterized in that: A plurality of rollers are mounted on the inner arc surface of the chuck, and the high points of the roller surfaces exceed the arc surface.

5. The paper tube cutting positioning auxiliary device according to claim 4, characterized in that: The wheel surface of the roller is a rubber surface.

6. The paper tube cutting positioning auxiliary device according to claim 4, characterized in that: The wheel surface width of the roller is not less than 1 cm.

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