Air spring leather bag semi-finished product expanding tool

Abstract

The utility model relates to the field of leather bag vulcanization matching, and discloses an air spring leather bag semi-finished product expansion type expansion tool which comprises inflation equipment, a leather bag semi-finished product to be expanded, an upper end bearing seat, a lower end bearing seat and an expansion air bag. The upper end of the expansion airbag is hermetically embedded into the upper-end bearing seat, and the lower end of the expansion airbag is hermetically embedded into the lower-end bearing seat; the lower end bearing seat is further provided with an air inlet channel, the air inlet channel is provided with an air inflation pipe in a closed communication mode, and the air inflation pipe is communicated with air inflation equipment. A to-be-expanded leather bag semi-finished product is correspondingly arranged outside the whole formed by the expansion air bag, the upper end bearing seat and the lower end bearing seat in a sleeving mode. According to the utility model, the expansion air bag is embedded between the upper end bearing seat and the lower end bearing seat in a sealing manner, and the inflation operation of the expansion air bag is realized through the inflation tube, so that the expansion air bag is expanded and the leather bag semi-finished product is subjected to expansion type expansion operation, and the production efficiency and the production quality are improved.

Description

Technical Field

[0001] The utility model relates to the field of vulcanization production of air spring bladders, in particular to a bulging and expanding tool for a semi-finished air spring bladder. Background Art

[0002] An air spring is a spring that is filled with compressed air in a sealed container and uses the compressibility of the gas to achieve its elastic effect. The air spring bladder is a key component of the air spring. The air spring bladder must undergo a vulcanization process to achieve its performance requirements. Before vulcanization, the air spring bladder is called a semi-finished bladder. The vulcanization process involves placing the semi-finished bladder in a vulcanization mold, where heat is transferred through the mold to cure the bladder at the required vulcanization temperature, thereby achieving the required performance. However, if the bladder semi-finished product is not fully expanded before vulcanization (for example, if some areas of the bladder are concave, others are convex, or other problems occur), the vulcanized bladder will have poor appearance quality and is prone to quality issues, resulting in poor performance of the resulting air spring. In the prior art, the semi-finished bladder is generally visually inspected before being placed directly into the vulcanization mold for vulcanization. Production research has found that the vulcanized bladder has poor appearance quality and performance, which can easily lead to scrapping and a low yield rate. Utility Model Content

[0003] The purpose of the present utility model is to solve the technical problems pointed out by the background technology, and to provide an air spring bladder semi-finished product expansion tooling, in which an expansion airbag is embedded and sealed between the upper end bearing seat and the lower end bearing seat, and the lower end bearing seat has an air inlet channel and an inflation tube, and the inflation airbag is inflated through the inflation tube, so that the expansion airbag is inflated and the bladder semi-finished product mounted on the outside of the expansion airbag is expanded, so that the bladder semi-finished product can achieve better shaping quality, and the bladder semi-finished product to be inflated meets the quality requirements before vulcanization. The bladder production quality is improved by the expansion tooling of the present utility model.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] An air spring bladder semi-finished product inflating and expansion tooling includes an inflation device, a bladder semi-finished product to be inflated, an upper end bearing seat, a lower end bearing seat and an inflation airbag, an inner support rod being connected between the upper end bearing seat and the lower end bearing seat, the upper end of the inflation airbag is sealed and embedded in the upper end bearing seat, and the lower end of the inflation airbag is sealed and embedded in the lower end bearing seat; the lower end bearing seat is also provided with an air inlet channel connected to the internal cavity of the inflation airbag, the air inlet channel is sealed and connected with an inflation tube, and the inflation tube is connected to the inflation device; the semi-finished bladder to be inflated is correspondingly mounted on the outer part of the whole formed by the inflation airbag, the upper end bearing seat and the lower end bearing seat.

[0006] In order to better realize the present utility model, the upper end of the expansion airbag has an annular embedding end A, and the upper end supporting seat includes an outer seat A and an inner seat A connected to the outer seat A by screws. The side edge of the outer seat A is provided with an annular embedding groove A, and the side edge of the inner seat A is provided with an annular embedding groove B corresponding to the annular embedding groove A. The annular embedding groove A of the upper end supporting seat and the annular embedding groove B together constitute an annular sealed embedding cavity A, and the annular embedding end A of the expansion airbag is sealed and embedded in the annular sealed embedding cavity A.

[0007] Preferably, the lower end of the expansion airbag has an annular embedding end B, and the lower end supporting seat includes an outer seat B and an inner seat B connected to the outer seat B by screws. The side edge of the outer seat B is provided with an annular embedding groove C, and the side edge of the inner seat B is provided with an annular embedding groove D corresponding to the annular embedding groove C. The annular embedding groove C of the lower end supporting seat and the annular embedding groove D together constitute an annular sealed embedding cavity B, and the annular embedding end B of the expansion airbag is sealed and embedded in the annular sealed embedding cavity B.

[0008] Preferably, the upper end face of the inner support rod contacts the lower end face of the inner seat A and is connected and fixed by screw A; the inner seat B is recessed with a rod end embedding groove, and the lower end of the inner support rod has an embedding column, and the embedding column of the inner support rod is embedded and installed in the rod end embedding groove of the inner seat B.

[0009] Preferably, a foot valve for controlling the inflation switch is installed between the inflation device and the inflation tube.

[0010] Preferably, the present invention further comprises a support platform, a screw hole is provided at the bottom of the outer seat B, and a screw B matching the screw hole is installed on the support platform.

[0011] Preferably, an annular reinforcing rib A is embedded in the annular embedded end A of the expansion airbag; an annular reinforcing rib B is embedded in the annular embedded end B of the expansion airbag.

[0012] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0013] (1) The utility model has an upper bearing seat and a lower bearing seat, an expansion airbag is embedded and sealed between the upper bearing seat and the lower bearing seat, the lower bearing seat has an air inlet channel and an inflation tube, and the inflation airbag is inflated through the inflation tube, so that the expansion airbag is inflated and the semi-finished bladder mounted on the outside of the expansion airbag is expanded, so that the semi-finished bladder reaches a better shaping quality and the semi-finished bladder reaches the quality requirements before vulcanization. The expansion tooling of the utility model improves the production quality of the bladder.

[0014] (2) The utility model realizes the expansion processing of the bladder semi-finished product, ensures the quality requirements of the bladder semi-finished product before vulcanization, has the advantages of simple assembly, reliable performance, and easy operation, improves production efficiency and production quality, and improves product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a semi-finished product of a to-be-inflated bladder of the utility model;

[0016] Figure 2 Schematic diagram of the structure of the bulging expansion tooling in the embodiment;

[0017] Figure 3 for Figure 2 Schematic diagram of the connection structure between the upper and middle end bearing seat and the annular embedded end A of the expansion airbag;

[0018] Figure 4 for Figure 2 Schematic diagram of the connection structure between the middle and lower end bearing seat and the annular embedded end B of the expansion airbag;

[0019] Figure 5 This is a schematic diagram of the state in which the inflatable expansion tooling is assembled with the semi-finished bladder to be inflated in the embodiment;

[0020] Figure 6 Schematic diagram of the use of the expansion tooling in the embodiment for expanding the semi-finished bladder to be expanded;

[0021] Figure 7 This is a diagram of the status of the semi-finished bladder being assembled in the vulcanization equipment after expansion.

[0022] The names corresponding to the reference numerals in the accompanying drawings are:

[0023] 1 - Upper end bearing seat, 11 - Outer seat A, 12 - Inner seat A, 13 - Annular seal embedded cavity A, 14 - Screw A, 2 - Lower end bearing seat, 21 - Outer seat B, 22 - Inner seat B, 23 - Annular seal embedded cavity B, 24 - Rod end embedded groove, 25 - Air intake channel, 26 - Screw B, 261 - Screw hole, 3 - Inflatable airbag, 31 - Annular reinforcement rib A, 32 - Annular reinforcement rib B, 4 - Inner support rod, 5 - Foot valve, 6 - Inflation tube, 7 - Support platform, 8 - Semi-finished bladder to be inflated, 9 - Vulcanized inner bladder, 10 - Vulcanization equipment. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the embodiments:

[0025] Example

[0026] like Figures 1 to 7As shown, an air spring bladder semi-finished product expansion tooling includes an inflation device (such as an inflator or an air pump), a bladder semi-finished product 8 to be inflated, an upper end bearing seat 1, a lower end bearing seat 2 and an inflation airbag 3, an inner support rod 4 is connected between the upper end bearing seat 1 and the lower end bearing seat 2 (the inner support rod 4 plays a supporting role between the upper end bearing seat 1 and the lower end bearing seat 2, and the upper end bearing seat 1 and the lower end bearing seat 2 are arranged parallel to each other), the upper end of the inflation airbag 3 is sealed and embedded in the upper end bearing seat 1, and in some embodiments The upper end of the expansion airbag 3 has an annular embedding end A, the upper end supporting seat 1 includes an outer seat A11 and an inner seat A12 connected to the outer seat A11 by screws, the side edge of the outer seat A11 is provided with an annular embedding groove A, the side edge of the inner seat A12 is provided with an annular embedding groove B corresponding to the annular embedding groove A, the annular embedding groove A of the upper end supporting seat 1 and the annular embedding groove B together constitute an annular sealing embedding cavity A13, and the annular embedding end A of the expansion airbag 3 is sealed and embedded in the annular sealing embedding cavity A13. The lower end of the expansion airbag 3 is sealed and embedded in the lower end supporting seat 2; in some embodiments, the lower end of the expansion airbag 3 has an annular embedding end B, and the lower end supporting seat 2 includes an outer seat B21 and an inner seat B22 connected to the outer seat B21 by screws. The side edge of the outer seat B21 is provided with an annular embedding groove C, and the side edge of the inner seat B22 is provided with an annular embedding groove D corresponding to the annular embedding groove C. The annular embedding groove C of the lower end supporting seat 2 and the annular embedding groove D together constitute an annular sealed embedding cavity B23, and the annular embedding end B of the expansion airbag 3 is sealed and embedded in the annular sealed embedding cavity B23. Preferably, an annular reinforcing rib A31 is embedded inside the annular embedded end A of the inflation airbag 3 (the annular reinforcing rib A31 serves to strengthen the end portion of the annular embedded end A, and after the end portion of the annular embedded end A is embedded in the annular sealing embedded cavity A13, the annular reinforcing rib A31 serves to strengthen the structural performance); an annular reinforcing rib B32 is embedded inside the annular embedded end B of the inflation airbag 3 (the annular reinforcing rib B32 serves to strengthen the structural performance of the end portion of the annular embedded end A).

[0027] like Figure 4As shown, the lower end support seat 2 is also provided with an air inlet channel 25 connected to the internal cavity of the inflatable airbag 3 (the outer seat B21 is provided with an air inlet channel A, which is "L"-shaped and passes through the side wall of the outer seat B21, and the inner seat B22 is provided with an air inlet channel B connected to the air inlet channel A. The air inlet channel A and the air inlet channel B constitute the air inlet channel 25). The end of the air inlet channel 25 is sealed and connected with an inflation tube 6, and the inflation tube 6 is connected to the inflation device. Preferably, a foot valve 5 for controlling the inflation switch is installed between the inflation device and the inflation tube 6. The inflation device is generally an inflator. The foot valve 5 is a foot switch valve for controlling inflation. When the foot is stepped on, the inflation tube 6 is connected and the internal cavity of the inflatable airbag 3 is inflated through the air inlet channel 25. When the foot is released, the inflation tube 6 is not connected, and inflation does not occur.

[0028] When the inflatable bladder semi-finished product 8 is subjected to the inflatable expansion operation, the inflatable bladder semi-finished product 8 is correspondingly mounted on the exterior of the entire structure consisting of the inflatable airbag 3, the upper end bearing seat 1 and the lower end bearing seat 2. Figure 5 As shown, the semi-finished product 8 of the bladder to be inflated is inserted downward from the upper end supporting seat 1, and the semi-finished product 8 of the bladder to be inflated completely covers the upper end supporting seat 1, the expansion airbag 3, and the lower end supporting seat 2.

[0029] like Figure 3 As shown, the upper end surface of the inner support rod 4 contacts the lower end surface of the inner seat A12 and is connected and fixed by screws A14. Figure 4 As shown, the inner seat B22 is recessed to form a rod end embedding groove 24, and the lower end of the inner support rod 4 has an embedding column, and the embedding column of the inner support rod 4 is embedded and installed in the rod end embedding groove 24 of the inner seat B22.

[0030] In some embodiments, as Figure 2 、 Figure 5 As shown, the present invention further includes a support platform 7 , a screw hole 261 is opened at the bottom of the outer seat B21 , and a screw B26 matching the screw hole 261 is installed on the support platform 7 .

[0031] When using, Figure 5 As shown, the opening of one end of the semi-finished product 8 to be inflated is placed on the upper support seat 1, and the semi-finished product 8 to be inflated is placed on the upper support seat 1, the inflatable airbag 3, and the lower support seat 2 in sequence; after the placement is completed, step on the foot valve 5 and start the inflation operation, and the high-pressure gas enters the internal cavity of the inflatable airbag 3 through the inflation tube 6 and the air inlet channel. Figure 6As shown, after the inflation airbag 3 is inflated, the inflation airbag 3 expands the semi-finished bladder 8 to be inflated located outside, so that the semi-finished bladder 8 to be inflated meets the inflation quality requirements (during the inflation and expansion process, the airbag 3 can also be deflated and inflated, and the inflation and expansion operations can be performed on each position of the semi-finished bladder 8 to be inflated in sequence, or the inflation and expansion operations can be performed on key positions). After the semi-finished bladder 8 to be inflated meets the inflation quality requirements (can better fit the vulcanization workpiece 10 or vulcanization mold), the semi-finished bladder 8 to be inflated is removed, and the vulcanization inner bladder 9 is placed inside the semi-finished bladder 8. Then, the entire bladder is placed in the vulcanization workpiece 10 and placed in the vulcanization equipment for vulcanization.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tool for expanding a semi-finished air spring bladder, comprising an inflation device and a semi-finished air spring bladder (8), characterized in that: The invention also includes an upper bearing seat (1), a lower bearing seat (2) and an expansion airbag (3), wherein an inner support rod (4) is connected between the upper bearing seat (1) and the lower bearing seat (2), the upper end of the expansion airbag (3) is sealed and embedded in the upper bearing seat (1), and the lower end of the expansion airbag (3) is sealed and embedded in the lower bearing seat (2); the lower bearing seat (2) is also provided with an air inlet channel (25) connected to the internal cavity of the expansion airbag (3), and the air inlet channel (25) is sealed and connected with an inflation tube (6), and the inflation tube (6) is connected to the inflation device; the semi-finished product (8) of the leather bag to be inflated is correspondingly mounted on the outer part of the whole formed by the expansion airbag (3), the upper bearing seat (1) and the lower bearing seat (2).

2. The air spring bladder semi-finished product expansion tool according to claim 1, characterized in that: The upper end of the expansion airbag (3) has an annular embedded end A, and the upper end bearing seat (1) includes an outer seat A (11) and an inner seat A (12) connected to the outer seat A (11) by screws. The side edge of the outer seat A (11) is provided with an annular embedded groove A, and the side edge of the inner seat A (12) is provided with an annular embedded groove B corresponding to the annular embedded groove A. The annular embedded groove A of the upper end bearing seat (1) and the annular embedded groove B together form an annular sealed embedded cavity A (13), and the annular embedded end A of the expansion airbag (3) is sealed and embedded in the annular sealed embedded cavity A (13).

3. The air spring bladder semi-finished product expansion tool according to claim 2, characterized in that: The lower end of the expansion airbag (3) has an annular embedded end B, the lower end bearing seat (2) includes an outer seat B (21) and an inner seat B (22) connected to the outer seat B (21) by screws, the side edge of the outer seat B (21) is provided with an annular embedded groove C, the side edge of the inner seat B (22) is provided with an annular embedded groove D corresponding to the annular embedded groove C, the annular embedded groove C of the lower end bearing seat (2) and the annular embedded groove D together form an annular sealed embedded cavity B (23), and the annular embedded end B of the expansion airbag (3) is sealed and embedded in the annular sealed embedded cavity B (23).

4. The air spring bladder semi-finished product expansion tool according to claim 3, characterized in that: The upper end surface of the inner support rod (4) contacts the lower end surface of the inner seat A (12) and is connected and fixed by screws A (14); the inner seat B (22) is recessed to form a rod end embedding groove (24), and the lower end of the inner support rod (4) has an embedding column, and the embedding column of the inner support rod (4) is embedded and installed in the rod end embedding groove (24) of the inner seat B (22).

5. The air spring bladder semi-finished product expansion tool according to claim 1, characterized in that: A foot valve (5) for controlling the inflation switch is installed between the inflation device and the inflation pipe (6).

6. The air spring bladder semi-finished product expansion tool according to claim 3, characterized in that: It also includes a support platform (7), a screw hole (261) is opened at the bottom of the outer seat B (21), and a screw B (26) matched with the screw hole (261) is installed on the support platform (7).

7. The air spring bladder semi-finished product expansion tool according to claim 3, characterized in that: An annular reinforcing rib A (31) is embedded in the annular embedded end A of the expansion airbag (3); and an annular reinforcing rib B (32) is embedded in the annular embedded end B of the expansion airbag (3).

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