Universal deformable inner tube positioning structure

Abstract

The invention discloses a universal deformable inner tube positioning structure, and belongs to the technical field of inner tube manufacturing. A plurality of lower positioning spokes are rotationally mounted at the top of the lower positioning sleeve, and a spoke expansion seat is mounted on the outer side wall of the lower positioning sleeve through threads; a plurality of avoiding grooves are formed in the side wall of the lower positioning sleeve, an installation supporting column is concentrically fixed in the lower positioning sleeve, a sliding sleeve is installed on the installation supporting column in a sleeving mode, a plurality of upper positioning spokes are fixed to the side wall of the sliding sleeve, and each upper positioning spoke is located in the corresponding avoiding groove; an inner tube is placed between the upper positioning spoke and the lower positioning spoke, and the inner tube is positioned under the clamping action of the upper positioning spoke and the lower positioning spoke. All the lower positioning spokes can be driven to synchronously turn upwards and expand by rotating the spoke expansion seat upwards, at the moment, supporting of inner tubes of different sizes and models can be met, positioning of the inner tubes of different sizes and models can be met after the inner tubes are pressed downwards by the lower positioning spokes, and universality is higher.

Description

Technical Field

[0001] The invention relates to the technical field of inner tube manufacturing, in particular to a universal deformable inner tube positioning structure. Background Art

[0002] The inner tube, also known as the inner tube, is a round elastic tube used to maintain the internal air pressure of the tire. It is equipped with a valve for inflating and maintaining the air pressure in the inner tube. Since the inner tube needs to be tested for air tightness and other qualifications after production, it needs to be temporarily fixed during the test for easy operation.

[0003] At present, the inner tube positioning and shaping structures are mostly fixed, and the sizes and models of the processed inner tubes are different. When using, different positioning structures need to be selected according to the size and model of the specific inner tube, which will increase the cost and its versatility is poor. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a universal deformable inner tube positioning structure, which can drive all the lower positioning spokes to synchronously flip and expand upward by rotating the spoke expansion seat upward. At this time, it can meet the support needs of inner tubes of different sizes and models. After the inner tube is pressed down by the lower positioning spokes, it can meet the positioning needs of inner tubes of different sizes and models, and its versatility is higher.

[0005] To solve the above technical problems, the technical solution of the present invention is achieved as follows:

[0006] A universal deformable inner tube positioning structure comprises a lower positioning sleeve, which can rotate around the lower positioning sleeve as the center; a plurality of rotating heads distributed in a circumferential array are welded and fixed on the top of the lower positioning sleeve, and a lower positioning spoke is rotatably installed on each rotating head, and a spoke expansion seat is threadedly installed on the outer wall of the lower positioning sleeve, and all the lower positioning spokes can be driven to synchronously turn upward and expand by rotating the spoke expansion seat upward; a plurality of avoidance grooves distributed in a circumferential array and located between two adjacent lower positioning spokes are provided on the side wall of the lower positioning sleeve, and a vertically arranged mounting pillar is concentrically welded to the inside of the lower positioning sleeve, and a sliding sleeve is detachably mounted on the mounting pillar, and a plurality of upper positioning spokes distributed in a circumferential array are fixed on the side wall of the sliding sleeve, and each upper positioning spoke is respectively located in the avoidance groove; an inner tube is placed between the upper positioning spoke and the lower positioning spoke, and the inner tube is positioned under the clamping action of the upper positioning spoke and the lower positioning spoke.

[0007] By adopting the above scheme, the structure can drive all the lower positioning spokes to synchronously turn upward and expand by rotating the spoke expansion seat upward. At this time, it can meet the support needs of inner tubes of different sizes and models. After the inner tube is pressed down by the lower positioning spokes, it can meet the positioning needs of inner tubes of different sizes and models, and its versatility is higher.

[0008] As a preferred embodiment of a universal deformable inner tube positioning structure, the circumferential cross-sections of the lower positioning spokes and the upper positioning spokes are circles, and the cross-sectional diameters of the two spokes are equal.

[0009] By adopting the above scheme, in order to ensure better fit between the lower positioning spoke and the upper positioning spoke and the inner tube when in contact, the circumferential cross-sections of the two are set to be circular, which will result in better fit when in contact.

[0010] As a preferred embodiment of a universal deformable inner tube positioning structure, the surfaces of the lower positioning spokes and the upper positioning spokes are both covered with anti-slip rubber sleeves.

[0011] By adopting the above scheme, in order to improve the friction between the lower positioning spoke and the upper positioning spoke and the inner tube, a non-slip rubber sleeve is installed on the outside of the two to increase the friction between them and ensure a better clamping effect.

[0012] As a preferred embodiment of a universal deformable inner tube positioning structure, the top surface of the spoke expansion seat is an arc surface, and the top is like a "mushroom head"; wherein, the bottom of the spoke expansion seat is concentrically connected to a turntable.

[0013] By adopting the above scheme, in order to facilitate the rotation of the spoke expansion seat, a turntable is added to assist the rotation of the spoke expansion seat. The spoke expansion seat moves upward after rotation, and the "mushroom head" at its top can resist all the lower positioning spokes and expand upward synchronously, thereby meeting the support requirements for inner tubes of different sizes and models.

[0014] When the lever is pulled outside the receiving sleeve, the lever is extended out of the way to engage the stopper, and the stopper is engaged with the spring, which is then engaged with the spring and is then engaged with the stopper.

[0015] By adopting the above scheme, in order to ensure that all the lower positioning spokes can always press down the inner tube, the lower pressure rod can be retracted first when installing the sliding sleeve. After the sliding sleeve is installed, the lower pressure rod is stretched. The lower pressure rod can press down the top of the sliding sleeve under the push of the spring, thereby making the lower positioning spokes press down and clamp the inner tube, which can meet the positioning needs of inner tubes of different sizes and models.

[0016] As a preferred embodiment of a universal deformable inner tube positioning structure, an annular slide is fixedly installed on the bottom of the lower positioning sleeve by screws, the annular slide is slidably installed on an annular slide rail, and the annular slide rail is fixedly installed on the chassis by screws.

[0017] By adopting the above scheme, in order to facilitate the rotation of the lower positioning sleeve, the annular slide seat and the annular slide rail are installed, and the lower positioning sleeve rotates. During the test, the inner tube can be rotated to facilitate testing whether there are leaks at various locations of the inner tube.

[0018] After adopting the above technical solution, the beneficial effects of the present invention are:

[0019] 1. This structure can drive all the lower positioning spokes to turn upward and expand synchronously by rotating the spoke expansion seat upward, so that inner tubes of different sizes and models can be supported. After the inner tube is pressed down by the lower positioning spokes, the positioning of inner tubes of different sizes and models can be met, and its versatility is higher;

[0020] 2. In order to ensure better fit between the lower and upper positioning spokes and the inner tube, the circumferential cross-sections of the two spokes are set to be circular, which will have better fit when in contact;

[0021] 3. In order to improve the friction between the lower positioning spokes and the upper positioning spokes and the inner tube, non-slip rubber sleeves are installed on the outside of the two to increase the friction when they are in contact, thereby ensuring a better clamping effect;

[0022] 4. In order to facilitate the rotation of the spoke expansion seat, a turntable is added to assist the rotation of the spoke expansion seat. After the spoke expansion seat rotates, it moves upward, and the "mushroom head" at the top of the spoke expansion seat can contact all the lower positioning spokes to expand upward synchronously, so as to meet the support requirements for inner tubes of different sizes and models;

[0023] 5. In order to ensure that all the lower positioning spokes can always press down the inner tube, the lower pressure rod can be retracted when installing the sliding sleeve. After the sliding sleeve is installed, the lower pressure rod is stretched. The lower pressure rod can press down the top of the sliding sleeve under the push of the spring, so that the lower positioning spokes can press down and clamp the inner tube, which can meet the positioning of inner tubes of different sizes and models;

[0024] 6. In order to facilitate the rotation of the lower positioning sleeve, by installing the annular slide and the annular slide rail, the lower positioning sleeve can rotate during the test to rotate the inner tube to facilitate testing whether there are leaks in various parts of the inner tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention 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 of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 The three-dimensional structure of the present invention after the inner tube is installed Figure 1 ;

[0027] Figure 2 The three-dimensional structure of the present invention after the inner tube is installed Figure 2 ;

[0028] Figure 3 It is a three-dimensional structural diagram of the present invention;

[0029] Figure 4 for Figure 3 Exploded diagram of

[0030] Figure 5 for Figure 4 Exploded view of the middle and lower positioning sleeve assembly;

[0031] Figure 6 for Figure 5 A three-dimensional structural diagram of the middle and lower positioning sleeves;

[0032] Figure 7 for Figure 5 A three-dimensional structural diagram of the middle sleeve assembly.

[0033] Figure 8 For display Figure 3 Internal three-dimensional structure diagram;

[0034] Fig. 9 for Figure 8 A partial enlarged view of the middle A;

[0035] Fig.10 for Figure 8 A partial enlarged view of point B in the middle;

[0036] Markings in the figure: 1-lower positioning sleeve; 2-rotating head; 3-lower positioning spoke; 4-spoke expansion seat; 5-avoidance groove; 6-installation pillar; 7-sliding sleeve; 8-upper positioning spoke; 9-inner tube; 10-turntable; 11-guide rod; 12-lower push sleeve; 13-spring; 14-storage sleeve; 15-lower pressure rod; 16-slide groove; 17-limiting groove; 18-handle; 19-annular slide seat; 20-annular slide rail; 21-chassis. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] like Figures 1 to 7 As shown, a universal deformable inner tube positioning structure is used for temporary positioning of the inner tube 9 during air tightness testing; it includes a lower positioning sleeve 1, which can rotate around itself; a plurality of rotating heads 2 distributed in a circumferential array are welded and fixed to the top of the lower positioning sleeve 1, each of which is rotatably mounted with a lower positioning spoke 3, and a spoke expansion seat 4 is threadedly mounted on the outer wall of the lower positioning sleeve 1, and all the lower positioning spokes 3 can be driven to turn upward and expand synchronously by rotating the spoke expansion seat 4 upward; the lower positioning sleeve 1 The side wall is provided with a plurality of avoidance grooves 5 distributed in a circumferential array and located between two adjacent lower positioning spokes 3. A vertically arranged mounting pillar 6 is welded concentrically inside the lower positioning sleeve 1. A sliding sleeve 7 is detachably mounted on the mounting pillar 6. A plurality of upper positioning spokes 8 distributed in a circumferential array are fixed on the side wall of the sliding sleeve 7, and each upper positioning spoke 8 is respectively located in the avoidance groove 5. An inner tube 9 is placed between the upper positioning spoke 8 and the lower positioning spoke 3, and the inner tube 9 is positioned under the clamping action of the upper positioning spoke 8 and the lower positioning spoke 3. The structure can drive all the lower positioning spokes 3 to turn upward and expand synchronously by rotating the spoke expansion seat 4 upward. At this time, it can meet the support of inner tubes 9 of different sizes and models. After the inner tube 9 is pressed down by the lower positioning spoke 3, it can meet the positioning of inner tubes 9 of different sizes and models, and its versatility is higher.

[0039] like Figure 4 As shown, the circumferential cross-section of the lower positioning spoke 3 and the upper positioning spoke 8 is a circle, and the cross-sectional diameters of the two are equal. In order to ensure better fit between the lower positioning spoke 3 and the upper positioning spoke 8 and the inner tube 9 when in contact, the circumferential cross-section of the two is set to be a circle, which will have a better fit when in contact.

[0040] The surfaces of the lower positioning spokes 3 and the upper positioning spokes 8 are covered with anti-skid rubber sleeves. In order to increase the friction between the lower positioning spokes 3 and the upper positioning spokes 8 and the inner tube 9, the outer surfaces of the two are covered with anti-skid rubber sleeves to increase the friction between them, thereby ensuring a better clamping effect.

[0041] like Figure 5 As shown, the top surface of the spoke expansion seat 4 is an arc surface, and the top is like a "mushroom head"; wherein, the bottom of the spoke expansion seat 4 is concentrically connected with a turntable 10. In order to facilitate the rotation of the spoke expansion seat 4, the turntable 10 is added to assist the rotation of the spoke expansion seat 4. After the spoke expansion seat 4 rotates, it moves upward, and the "mushroom head" at its top can resist all the lower positioning spokes 3 to turn upward and expand synchronously, thereby meeting the support for inner tubes 9 of different sizes and models.

[0042] like Figures 8 to 10 As shown, the interior of the mounting support 6 is hollow, and a vertically arranged guide rod 11 is welded and fixed to the top of the interior of the mounting support 6. A lower push sleeve 12 is slidably installed on the guide rod 11, and a spring 13 for pushing the lower push sleeve 12 to slide downward is installed on the guide rod 11; the two sides of the lower push sleeve 12 are connected with mutually symmetrical storage sleeves 14, and a lower pressure rod 15 is telescopically installed in the storage sleeve 14, and the lower pressure rod 15 is always located in a slide groove 16 opened on the side wall of the mounting support 6, and a pull handle 18 arranged vertically therewith is welded on the side wall of the lower pressure rod 15. 5 can press down the top of the sliding sleeve 7 under the push of the spring 13; the pressing rod 15 is interference-fitted in the receiving sleeve 14, and a limiting groove 17 for use with the pressing rod 15 is provided on the top surface of the sliding sleeve 7; when the pressing rod 15 is completely retracted in the receiving sleeve 14, the pressing rod 15 is completely located in the mounting support 6, and does not affect the up and down movement of the sliding sleeve 7 on the mounting support 6; when the pressing rod 15 is stretched outside the receiving sleeve 14, the pressing rod 15 extends out of the mounting support 6, and the pressing rod 15 is pressed down in the limiting groove 17. In order to ensure that all the lower positioning spokes 3 can always press down the inner tube 9, the pressing rod 15 can be retracted when installing the sliding sleeve 7, and after the sliding sleeve 7 is installed, the pressing rod 15 is stretched, and the pressing rod 15 can be pushed down on the top of the sliding sleeve 7 under the push of the spring 13, so that the lower positioning spokes 3 press down and clamp the inner tube 9, which can meet the positioning of the inner tubes 9 of different sizes.

[0043] like Figure 5 to, Fig.10 As shown, an annular slide 19 is fixedly installed at the bottom of the lower positioning sleeve 1 by screws, and the annular slide is slidably installed on an annular slide rail 20, and the annular slide rail 20 is fixedly installed on a chassis 21 by screws. In order to facilitate the rotation of the lower positioning sleeve 1, by installing the annular slide 19 and the annular slide rail 20, the rotation of the lower positioning sleeve 1 can rotate the inner tube 9 during the test process, so as to facilitate the test of whether there are air leaks at various positions of the inner tube 9.

[0044] Working principle of the present invention:

[0045] Before use, a turntable 10 is added to assist the spoke expansion seat 4 in rotating. The spoke expansion seat 4 moves upward after rotating, and the "mushroom head" at its top can resist all the lower positioning spokes 3 to synchronously turn upward and expand until the lower positioning spokes 3 can meet the size of the inner tube 9 to be tested.

[0046] When in use, the inflated inner tube 9 is placed on the lower positioning spoke 3. When installing the sliding sleeve 7, the lower pressure rod 15 can be retracted first. After the sliding sleeve 7 is installed, the lower pressure rod 15 is stretched. The lower pressure rod 15 can press down the top of the sliding sleeve 7 under the push of the spring 13, and then the lower positioning spoke 3 presses down and clamps the inner tube 9, which can meet the positioning requirements of inner tubes 9 of different sizes and models.

[0047] When testing the air tightness of the inner tube 9, by rotating the lower positioning sleeve 1, the inner tube 9 will rotate during the test, so as to facilitate testing whether there are air leaks at various locations of the inner tube 9.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A universal deformable inner tube positioning structure, comprising a lower positioning sleeve (1), wherein the lower positioning sleeve (1) is capable of rotating around the lower positioning sleeve; Features: A plurality of rotating heads (2) distributed in a circumferential array are fixed on the top of the lower positioning sleeve (1), and a lower positioning spoke (3) is rotatably mounted on each rotating head (2). A spoke expansion seat (4) is threadedly mounted on the outer wall of the lower positioning sleeve (1), and all the lower positioning spokes (3) can be driven to turn upward and expand synchronously by rotating the spoke expansion seat (4) upward. The side wall of the lower positioning sleeve (1) is provided with a plurality of avoidance grooves (5) distributed in a circumferential array and located between two adjacent lower positioning spokes (3); a vertically arranged mounting pillar (6) is concentrically fixed inside the lower positioning sleeve (1); a sliding sleeve (7) is detachably mounted on the mounting pillar (6); a plurality of upper positioning spokes (8) distributed in a circumferential array are fixed on the side wall of the sliding sleeve (7), and each upper positioning spoke (8) is located in the avoidance groove (5); An inner tube (9) is placed between the upper positioning spoke (8) and the lower positioning spoke (3), and the inner tube (9) is positioned under the clamping action of the upper positioning spoke (8) and the lower positioning spoke (3).

2. The universal deformable inner tube positioning structure according to claim 1, characterized in that: The circumferential cross-sections of the lower positioning spoke (3) and the upper positioning spoke (8) are circles, and the cross-sectional diameters of the two are equal.

3. The universal deformable inner tube positioning structure according to claim 1, characterized in that: The surfaces of the lower positioning spoke (3) and the upper positioning spoke (8) are both covered with anti-slip rubber sleeves.

4. The universal deformable inner tube positioning structure according to claim 3, characterized in that: The top surface of the spoke expansion seat (4) is an arc surface, and the top is like a "mushroom head".

5. The universal deformable inner tube positioning structure according to claim 4, characterized in that: A rotating disk (10) is coaxially connected to the bottom of the spoke expansion seat (4).

6. The universal deformable inner tube positioning structure according to claim 1, characterized in that: The interior of the mounting pillar (6) is hollow, and a vertically arranged guide rod (11) is fixed to the internal top end of the mounting pillar (6), a lower push sleeve (12) is slidably installed on the guide rod (11), and a spring (13) is mounted on the guide rod (11) to push the lower push sleeve (12) to slide downward; the two sides of the lower push sleeve (12) are connected with mutually symmetrical storage sleeves (14), and a downward pressure rod (15) is telescopically installed in the storage sleeve (14), and the downward pressure rod (15) is always located in a slide groove (16) opened on the side wall of the mounting pillar (6), and the downward pressure rod (15) can press down the top end of the sliding sleeve (7) under the push of the spring (13).

7. The universal deformable inner tube positioning structure according to claim 6, characterized in that: The pressing rod (15) is interference-fitted in the receiving sleeve (14), and a limiting groove (17) for use with the pressing rod (15) is provided on the top surface of the sliding sleeve (7).

8. The universal deformable inner tube positioning structure according to claim 7, characterized in that: When the lower pressure rod (15) is completely retracted into the storage sleeve (14), the lower pressure rod (15) is completely located inside the mounting pillar (6) and does not affect the up and down movement of the sliding sleeve (7) on the mounting pillar (6); when the lower pressure rod (15) is stretched outside the storage sleeve (14), the lower pressure rod (15) extends outside the mounting pillar (6) and the lower pressure rod (15) is pressed down into the limit groove (17).

9. The universal deformable inner tube positioning structure according to claim 8, characterized in that: The side wall of the pressing rod (15) is connected to a pull handle (18) which is arranged perpendicular to the pressing rod.

10. The universal deformable inner tube positioning structure according to any one of claims 1 to 9, characterized in that: An annular slide seat (19) is fixedly mounted on the bottom of the lower positioning sleeve (1), and the annular slide seat is slidably mounted on an annular slide rail (20), and the annular slide rail (20) is fixedly mounted on a chassis (21).

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