High-frequency welding jig for TPU (thermoplastic polyurethane) bicycle inner tube

Abstract

The utility model relates to the technical field of preparation of bicycle inner tubes, in particular to a TPU (thermoplastic polyurethane) bicycle inner tube high-frequency welding jig. The mold comprises a bottom mold, an inner mold limiting frame is fixedly connected to the bottom mold, lower mold guiding outer frames are fixedly connected to the two sides of the inner mold limiting frame, a valve core limiting frame is arranged between the two lower mold guiding outer frames, and a rhombic empty groove matched with the bottom of a valve core is formed in the middle of the valve core limiting frame. A valve core upper die which is vertically and upwards arranged is fixedly connected into the empty groove, the middle of the valve core upper die is hollow to form a valve core installation position, an upper die guiding outer frame is fixedly arranged on the outer side of the valve core upper die, and the upper die guiding outer frame is provided with a driving structure. Therefore, the upper die guide outer frame, the valve core limiting frame and the valve core upper die can be inserted into and withdrawn from the lower die guide outer frame. The device solves the problem that the position of manually placing the valve core is inaccurate.

Description

Technical Field

[0001] The utility model relates to the technical field of preparation of bicycle inner tubes, in particular to a TPU bicycle inner tube high-frequency welding fixture. Background Art

[0002] Bicycles are an important environmentally friendly means of transportation. Bicycle riding has become a major means of travel for people. At the same time, more and more people use bicycles as fitness equipment for riding and exercise. At present, the valve core on the bicycle inner tube is usually installed by manual positioning, but the manual placement is not accurate. Utility Model Content

[0003] In order to solve the problems in the related art, the utility model provides a TPU bicycle inner tube high-frequency welding fixture, which solves the problem of inaccurate position of the valve core placed manually.

[0004] In order to solve the above problems, the following technical solutions are provided:

[0005] The utility model discloses a TPU bicycle inner tube high-frequency welding fixture, which comprises a bottom mold, a boss is arranged in the middle of the bottom mold, an inner mold limit frame is fixedly connected to the bottom mold, a through hole matching the boss is arranged in the middle of the inner mold limit frame, limit blocks are arranged on both sides of the through hole, the upper surface height of the limit block is higher than the upper surface height of the through hole, the distance between the two limit blocks is the same as the width of the inner tube, and an inner tube installation position is formed, and lower mold guide outer frames are fixedly connected on both sides of the inner mold limit frame, and a gasket is arranged between the two lower mold guide outer frames. A door core limiting frame, wherein the lower surface of the valve core limiting frame is abutted against the upper surface of the limiting block, and a diamond-shaped empty groove matching the bottom of the valve core is arranged in the middle of the valve core limiting frame, a valve core upper mold arranged vertically upward is fixedly connected in the empty groove, the middle part of the valve core upper mold is hollow, forming a valve core mounting position, an upper mold guide outer frame is fixedly arranged on the outer side of the valve core upper mold, and the upper mold guide outer frame is provided with a driving structure so that the upper mold guide outer frame, the valve core limiting frame and the valve core upper mold can be inserted into and withdrawn from the lower mold guide outer frame.

[0006] In the above scheme, a bicycle inner tube is placed on an inner mold limit frame, and the valve core is placed on the bicycle inner tube by limiting the position through a limit block. The upper mold guide outer frame, the valve core limit frame and the valve core upper mold are inserted into the lower mold guide outer frame. The valve core is located in the valve core limit frame, which is used to limit the position of the bicycle valve core, thereby solving the problem of inaccurate position of the valve core when placed manually.

[0007] Cross-shaped grooves are arranged on both sides of the upper surface of the inner mold limit frame, and a cross-shaped protrusion matched with the grooves is arranged on the lower surface of the lower mold guide outer frame. The inner mold limit frame and the lower mold guide outer frame are fixedly matched.

[0008] The lower surface of the valve core upper mold is provided with a protrusion matched with the empty groove, and the valve core upper mold is fixedly matched with the valve core limiting frame.

[0009] In the above scheme, the inner mold limit frame and the lower mold guide outer frame are installed conveniently by matching the groove with the protrusion, and the valve core upper mold and the valve core limit frame are installed conveniently by matching the empty groove with the protrusion.

[0010] The driving structure contains convex teeth, the upper surface area of ​​the convex teeth is larger than the lower surface area, the convex teeth are arranged in a trapezoidal shape on the outer side of the upper mold guide outer frame, the inner side of the lower mold guide outer frame is provided with a recess matched with the convex teeth, and the upper mold guide outer frame and the lower mold guide outer frame are matched in an upward and downward sliding state.

[0011] In the above scheme, the convex teeth cooperate with the concave ones to facilitate the insertion and withdrawal of the upper die guide outer frame into and from the lower die guide outer frame.

[0012] The bottom mold, the inner mold limiting frame and the lower mold guiding outer frame are combined into an integrated component, and the upper mold guiding outer frame, the valve core upper mold and the valve core limiting frame are combined into an integrated component, and the two components can be freely plugged in and out.

[0013] In the above scheme, the bottom mold, the inner mold limit frame and the lower mold guide outer frame are combined into one integrated component, and the upper mold guide outer frame, the valve core upper mold and the valve core limit frame are another integrated component, which is convenient for positioning the bicycle valve core and effectively solves the product positioning problem.

[0014] The above solution has the following advantages:

[0015] 1. A high-frequency welding fixture for a TPU bicycle inner tube of the utility model comprises a bottom mold, a boss is provided in the middle of the bottom mold, an inner mold limit frame is fixedly connected to the bottom mold, a through hole matching the boss is provided in the middle of the inner mold limit frame, limiting blocks are arranged on both sides of the through hole, the upper surface height of the limiting block is higher than the upper surface height of the through hole, the distance between the two limiting blocks is the same as the width of the inner tube, forming an inner tube installation position, lower mold guide outer frames are fixedly connected on both sides of the inner mold limit frame, a valve core limit frame is provided between the two lower mold guide outer frames, the lower surface of the valve core limit frame is against the upper surface of the limiting block, a rhombus-shaped empty groove matching the bottom of the valve core is provided in the middle of the valve core limit frame, and the empty groove is provided in the middle of the valve core limit frame. A valve core upper mold arranged vertically upward is fixedly connected in the groove, the middle part of the valve core upper mold is hollow, forming a valve core installation position, an upper mold guide outer frame is fixedly arranged on the outer side of the valve core upper mold, and the upper mold guide outer frame is provided with a driving structure, so that the upper mold guide outer frame, the valve core limiting frame and the valve core upper mold can be inserted into and withdrawn from the lower mold guide outer frame, and the bicycle inner tube is placed on the inner mold limiting frame and limited by the limiting block, and the valve core is placed on the bicycle inner tube, and the upper mold guide outer frame, the valve core limiting frame and the valve core upper mold are inserted into the lower mold guide outer frame, and the valve core is located in the valve core limiting frame, which is used to limit the position of the bicycle valve core, effectively solving the product positioning problem without manual positioning and placement.

[0016] 2. Grooves are provided on both sides of the upper surface of the inner mold limit frame, and protrusions matched with the grooves are provided on the lower surface of the lower mold guide outer frame. The grooves are matched with the protrusions, so that the inner mold limit frame and the lower mold guide outer frame are conveniently installed. A raised portion matched with the empty groove is provided on the lower surface of the valve core upper mold. The empty groove is matched with the raised portion, so that the valve core upper mold and the valve core limit frame are conveniently installed. The driving structure contains convex teeth, and the inner side of the lower mold guide outer frame is provided with depressions matched with the convex teeth. The upper mold guide outer frame and the lower mold guide outer frame are matched in an upper and lower sliding state. The convex teeth are matched with the depressions, so that the upper mold guide outer frame is convenient to insert and withdraw from the lower mold guide outer frame. The bottom mold, the inner mold limit frame and the lower mold guide outer frame are combined into an integrated component. The upper mold guide outer frame, the valve core upper mold and the valve core limit frame are combined into an integrated component. The two components can be freely plugged in and out, which is convenient for positioning the bicycle valve core and effectively solving the product positioning problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a high-frequency welding fixture for TPU bicycle inner tubes;

[0018] Figure 2 A cross-sectional view of a high-frequency welding fixture for a TPU bicycle inner tube;

[0019] Figure 3 This is a schematic diagram of the various structures of a high-frequency welding fixture for TPU bicycle inner tubes;

[0020] Figure 4 A schematic diagram of the structure of a bicycle inner tube and a valve core of a TPU bicycle inner tube high-frequency welding fixture;

[0021] Explanation of the reference numerals: 1. bottom mold; 2. boss; 3. inner mold limit frame; 4. through hole; 5. limit block; 6. inner tube; 7. lower mold guide outer frame; 8. valve core limit frame; 9. empty groove; 10. valve core upper mold; 11. valve core; 12. upper mold guide outer frame; 13. groove; 14. protrusion; 15. raised portion; 16. convex tooth; 17. depression. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 4 As shown, a high-frequency welding fixture for a TPU bicycle inner tube of the utility model comprises a bottom mold 1, a boss 2 is provided in the middle of the bottom mold 1, an inner mold limit frame 3 is fixedly connected to the bottom mold 1, a through hole 4 adapted to the boss 2 is provided in the middle of the inner mold limit frame 3, and limit blocks 5 are arranged on both sides of the through hole 4. The upper surface height of the limit block 5 is higher than the upper surface height of the through hole 4. The distance between the two limit blocks 5 is the same as the width of the inner tube 6, forming an inner tube 6 installation position, and lower mold guide outer frames 7 are fixedly connected on both sides of the inner mold limit frame 3, and a valve core limit is provided between the two lower mold guide outer frames 7. The valve core limiting frame 8 has a lower surface that abuts against the upper surface of the limiting block 5. A diamond-shaped hollow groove 9 is arranged in the middle of the valve core limiting frame 8 and is adapted to the bottom of the valve core 11. A valve core upper mold 10 arranged vertically upward is fixedly connected in the hollow groove 9. The middle part of the valve core upper mold 10 is hollow to form a mounting position for the valve core 11. An upper mold guide outer frame 12 is fixedly arranged on the outer side of the valve core upper mold 10. The upper mold guide outer frame 12 is provided with a driving structure so that the upper mold guide outer frame 12, the valve core limiting frame 8 and the valve core upper mold 10 can be inserted into and withdrawn from the lower mold guide outer frame 7.

[0024] Cross-shaped grooves 13 are arranged on both sides of the upper surface of the inner mold limit frame 3, and a cross-shaped protrusion 14 matching the grooves 13 is arranged on the lower surface of the lower mold guide outer frame 7. The inner mold limit frame 3 is fixedly matched with the lower mold guide outer frame 7, and a protrusion 15 matching the empty groove 9 is arranged on the lower surface of the valve core upper mold 10. The valve core upper mold 10 is fixedly matched with the valve core limit frame 8.

[0025] The driving structure contains a convex tooth 16, the upper surface area of ​​the convex tooth 16 is larger than the lower surface area, the convex tooth 16 is arranged in a trapezoidal shape on the outside of the upper mold guide outer frame 12, and a recess 17 matching the convex tooth 16 is provided on the inner side of the lower mold guide outer frame 7, and the upper mold guide outer frame 12 and the lower mold guide outer frame 7 are matched in an upward and downward sliding state.

[0026] The bottom mold 1, the inner mold limit frame 3 and the lower mold guide outer frame 7 are combined into an integrated component, and the upper mold guide outer frame 12, the valve core upper mold 10 and the valve core limit frame 8 are combined into an integrated component. The two components can be freely plugged in and out.

[0027] First, the bottom mold 1, the inner mold limiting frame 3 and the lower mold guiding outer frame 7 are combined into an integrated component, the bicycle inner tube 6 is placed on the inner mold limiting frame 3, and the valve core 11 is placed on the bicycle inner tube 6 by limiting the position through the limiting block 5, and then the upper mold guiding outer frame 12, the valve core upper mold 10 and the valve core limiting frame 8 are combined into an integrated component, the upper mold guiding outer frame 12, the valve core limiting frame 8 and the valve core upper mold 10 are inserted into the lower mold guiding outer frame 7, and the valve core 11 is located in the valve core limiting frame 8, which is used to limit the position of the bicycle valve core 11, and finally high-frequency welding is performed. After the welding is completed, the bicycle inner tube 6 and the valve core 11 can be removed.

[0028] In the description of the present utility model, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] 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 TPU bicycle inner tube high frequency welding fixture, characterized in that: The invention comprises a bottom mold (1), a boss (2) is provided in the middle of the bottom mold (1), an inner mold limit frame (3) is fixedly connected to the bottom mold (1), a through hole (4) matched with the boss (2) is provided in the middle of the inner mold limit frame (3), limit blocks (5) are arranged on both sides of the through hole (4), the upper surface height of the limit blocks (5) is higher than the upper surface height of the through hole (4), the distance between the two limit blocks (5) is the same as the width of the inner tube (6), forming an inner tube (6) installation position, the inner mold limit frame (3) is fixedly connected to the lower mold guide outer frame (7) on both sides, a valve core limit frame (8) is arranged between the two lower mold guide outer frames (7), and the valve core limit frame (8) is arranged between the two lower mold guide outer frames (7). The lower surface of the positioning frame (8) abuts against the upper surface of the limiting block (5); a diamond-shaped hollow groove (9) adapted to the bottom of the valve core (11) is arranged in the middle of the valve core limiting frame (8); a valve core upper mold (10) arranged vertically upward is fixedly connected in the hollow groove (9); the middle of the valve core upper mold (10) is hollow to form a mounting position for the valve core (11); an upper mold guide outer frame (12) is fixedly arranged on the outer side of the valve core upper mold (10); the upper mold guide outer frame (12) is provided with a driving structure so that the upper mold guide outer frame (12), the valve core limiting frame (8) and the valve core upper mold (10) can be inserted into and withdrawn from the lower mold guide outer frame (7).

2. A TPU bicycle inner tube high frequency welding jig as claimed in claim 1, characterized in that: The inner mold limit frame (3) is provided with "cross"-shaped grooves (13) on both sides of the upper surface, and the lower mold guide outer frame (7) is provided with a "cross"-shaped protrusion (14) adapted to the grooves (13) on the lower surface, and the inner mold limit frame (3) and the lower mold guide outer frame (7) are fixedly matched.

3. A TPU bicycle inner tube high frequency welding jig as claimed in claim 1, characterized in that: The lower surface of the valve core upper mold (10) is provided with a protrusion (15) matched with the empty groove (9), and the valve core upper mold (10) is fixedly matched with the valve core limiting frame (8).

4. A TPU bicycle inner tube high frequency welding jig as claimed in claim 1, characterized in that: The driving structure comprises a convex tooth (16), the upper surface area of ​​the convex tooth (16) is larger than the lower surface area, the convex tooth (16) is arranged in a trapezoidal shape on the outer side of the upper die guide outer frame (12), the inner side of the lower die guide outer frame (7) is provided with a recess (17) matched with the convex tooth (16), and the upper die guide outer frame (12) and the lower die guide outer frame (7) are matched in an upward and downward sliding manner.

5. A TPU bicycle inner tube high frequency welding jig as claimed in claim 1, characterized in that: The bottom mold (1), the inner mold limit frame (3) and the bottom mold guide outer frame (7) are combined into an integrated component, and the upper mold guide outer frame (12), the valve core upper mold (10) and the valve core limit frame (8) are combined into an integrated component, and the two components can be freely plugged in and out.

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