Inflatable forming inflation tube

Abstract

The utility model discloses an inflatable tube for inflatable forming, which relates to the technical field of inflatable forming and comprises an insertion rod, the insertion rod is inserted into a tube blank, an air outlet and an air inlet are arranged on the insertion rod, an expansion tube consisting of a rubber tube and a fixed tube is sleeved on the outer side of the insertion rod, and powder is filled between the expansion tube and the tube blank. Air is pumped into the expansion pipe through the air pump, the air inlet and the air outlet, so that the rubber pipe expands outwards, powder is conveyed into a pipe blank through the powder conveying pump and the feeding hole, and therefore the space between the rubber pipe and the pipe blank is filled with the powder, the expanded rubber pipe extrudes the powder, and the rubber pipe and the pipe blank are filled with the powder. The pipe blank is extruded, so that the pipe blank is expanded and formed, the inflation space is reduced through powder filling, the gas production rate is reduced, the inflation time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air expansion forming, in particular to an air expansion forming inflatable tube. Background Art

[0002] Automobile axle housing is the base for installing the main reducer, differential, half-axle and wheel assembly. Its main function is to support and protect the main reducer, differential and half-axle, etc. It is one of the important components of the automobile. The axle housing is a structure with a large middle and small ends. The axle housing is generally processed by inflation molding.

[0003] The prior art publication number is CN114309230A, which is a small-volume gas expansion forming device for large-volume tubular parts. The device extends into a tube blank through two push rods and inflates the tube blank to expand the tube blank. However, when in use, the expansion of the tube blank needs to be fully inflated so that the gas fills the entire expansion space. Therefore, a large amount of inflation is required, resulting in a slow inflation speed and low production efficiency. Utility Model Content

[0004] The utility model aims to make up for the shortcomings of the prior art, that is, large gas production and low production efficiency, and provides an inflatable tube for forming gas.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inflatable tube for inflation, comprising an insert rod, which is inserted into a tube blank, and is provided with an air outlet and an air inlet, which are distributed on the inner and outer sides of the tube blank, and an air passage is provided between the air outlet and the air inlet, an expansion tube is sleeved on the outer side of the insert rod, powder is filled between the expansion tube and the tube blank, and a conveying passage is provided on the expansion tube.

[0006] As mentioned above, the expansion tube comprises a rubber tube, the rubber tube is sleeved on the outside of the insertion rod, both ends of the rubber tube are fixedly connected with fixed tubes, and the fixed tubes are fitted with the tube blank, the fixed tubes are fixedly connected with the insertion rod, and the conveying channel is opened on the fixed tubes.

[0007] As mentioned above, a metal mesh tube is provided inside the rubber tube, the metal mesh tube is sleeved on the outside of the insertion rod, and both ends of the metal mesh tube are fixedly connected to adjacent fixed tubes.

[0008] As mentioned above, the conveying path includes a feed hole and an exhaust hole, which are distributed on two fixed tubes and are both arranged horizontally. One end of the exhaust hole close to the rubber tube is fixedly connected with a partition net.

[0009] As mentioned above, the left end of the insertion rod is fixedly connected to a cylinder, the air inlet of the insertion rod is connected to an air pump, and the exhaust hole of the expansion tube is connected to a powder conveying pump.

[0010] As mentioned above, grooves are provided on the outer sides of the two fixing pipes, and sealing rings are sleeved in the grooves.

[0011] Compared with the prior art, the inflatable tube has the following beneficial effects: the utility model pumps air into the expansion tube through the air pump, the air inlet and the air outlet, so that the rubber tube expands outward, and conveys powder into the tube blank through the powder delivery pump and the feed hole, so that the powder is filled between the rubber tube and the tube blank, so that the expanded rubber tube extrude the powder and extrude the tube blank, so that the tube blank is expanded and formed, and the inflation space is reduced by filling with powder, thereby reducing the inflation amount, shortening the inflation time, and improving production efficiency.

[0012] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and study, or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the expansion tube and tube blank structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the expansion tube of the utility model;

[0016] Figure 4 This is a schematic diagram of the internal structure of the plug rod of the utility model;

[0017] Figure 5 This is a schematic diagram of the metal mesh tube structure of the utility model;

[0018] Figure 6 It is a schematic diagram of the structure of the tube blank in the expanded state of the utility model.

[0019] In the figure: 1. Insert rod; 2. Pipe blank; 3. Cylinder; 4. Air pump; 5. Powder conveying pump; 6. Expansion tube; 601. Rubber tube; 602. Fixed tube; 7. Metal mesh tube; 8. Sealing ring. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figure 1-5 As shown, the utility model provides a technical solution for an inflatable tube formed by an inflatable tube: an inflatable tube formed by an inflatable tube, comprising an insert rod 1, the insert rod 1 is inserted into a tube blank 2, an air outlet and an air inlet are provided on the insert rod 1, the air outlet and the air inlet are distributed on the inner and outer sides of the tube blank 2, and an air passage is provided between the air outlet and the air inlet, an expansion tube 6 is sleeved on the outer side of the insert rod 1, powder is filled between the expansion tube 6 and the tube blank 2, and a conveying passage is provided on the expansion tube 6.

[0022] According to the overall structure of the device, gas is transported into the expansion tube 6 through the air inlet and the air outlet of the insertion rod 1, and the expansion tube 6 is expanded by the gas, thereby squeezing the powder, and the tube blank 2 is squeezed by the powder, so that the tube blank 2 expands, and the powder occupies the space in the tube blank 2, thereby reducing the inflation amount and increasing the inflation speed, thereby improving production efficiency.

[0023] like Figure 3 As shown, the expansion tube 6 includes a rubber tube 601, which is sleeved on the outside of the insertion rod 1, and fixed tubes 602 are fixedly connected at both ends of the rubber tube 601. The fixed tube 602 is fitted with the tube blank 2, and the fixed tube 602 is fixedly connected to the insertion rod 1, and the conveying path is opened on the fixed tube 602.

[0024] The rubber tube 601 is sleeved on the outside of the insertion rod 1 through the fixing tube 602, and air is inflated into the rubber tube 601 through the insertion rod 1 to expand the rubber tube 601. The rubber tube 601 contacts the powder material to squeeze the powder material and compact it evenly, thereby generating even pressure on the tube blank 2.

[0025] like Figure 5 As shown, a metal mesh tube 7 is provided inside the rubber tube 601 , the metal mesh tube 7 is sleeved on the outside of the insertion rod 1 , and both ends of the metal mesh tube 7 are fixedly connected to the adjacent fixed tube 602 .

[0026] The two fixed tubes 602 are connected by the metal mesh tube 7 and the rubber tube 601 is supported, so that the expansion tube 6 has a stable structure and the gas can smoothly expand the rubber tube 601.

[0027] like Figure 3 As shown, the conveying path includes a feed hole and an exhaust hole, which are distributed on two fixed tubes 602 and are both arranged horizontally. One end of the exhaust hole close to the rubber tube 601 is fixedly connected with a partition net.

[0028] Negative pressure is formed by evacuating air between the tube blank 2 and the expansion tube 6 through the powder conveying pump 5 and the conveying channel, so that the powder enters from the feed hole and the air flows out through the exhaust hole, and the powder is blocked by the partition net to prevent the powder from being carried out, so that the powder is tightly filled between the tube blank 2 and the expansion tube 6.

[0029] like Figure 2As shown, the left end of the insertion rod 1 is fixedly connected to a cylinder 3, the air inlet of the insertion rod 1 is connected to an air pump 4, and the exhaust hole of the expansion tube 6 is connected to a powder conveying pump 5.

[0030] The cylinder 3 pushes the insertion rod 1 and the expansion tube 6 into the tube blank 2, the air pump 4 delivers gas to the air inlet to inflate the expansion tube 6, and the powder delivery pump 5 delivers powder between the tube blank 2 and the expansion tube 6 for filling.

[0031] like Figure 2 , 3 As shown, grooves are formed on the outer sides of the two fixing tubes 602, and sealing rings 8 are sleeved in the grooves.

[0032] The tube blank 2 and the expansion tube 6 are sealed by a sealing ring 8 to prevent leakage of the injected powder.

[0033] Working principle: When in use, the tube blank 2 is placed in the mold, the cylinder 3 pushes the insertion rod 1 and the expansion tube 6 into the tube blank 2, and the powder is delivered to the space between the expansion tube 6 and the tube blank 2 for filling through the delivery pump, and the gas is delivered to the airway through the air pump 4. The gas enters the rubber tube 601 from the air outlet to expand the rubber tube 601. The powder is squeezed during the expansion of the rubber tube 601. As the rubber tube 601 expands, the powder is gradually compacted and squeezes the tube blank 2, so that the tube blank 2 gradually expands and forms.

[0034] It should be noted that, in this article, the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 utility model; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected", and "connected" should be understood in a broad sense. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "connected" can be a direct connection, an indirect connection through an intermediate medium, or a connection between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inflatable tube for forming an air-filled tube, comprising an insert rod (1), wherein the insert rod (1) is inserted into a tube blank (2), and characterized in that: The insert rod (1) is provided with an air outlet and an air inlet, the air outlet and the air inlet are distributed on the inner and outer sides of the tube blank (2), and an air passage is provided between the air outlet and the air inlet. An expansion tube (6) is sleeved on the outer side of the insert rod (1), powder is filled between the expansion tube (6) and the tube blank (2), and a conveying passage is provided on the expansion tube (6).

2. The inflatable tube according to claim 1, characterized in that: The expansion tube (6) comprises a rubber tube (601), the rubber tube (601) is sleeved on the outside of the insertion rod (1), both ends of the rubber tube (601) are fixedly connected to fixed tubes (602), and the fixed tubes (602) are in contact with the tube blank (2), the fixed tube (602) is fixedly connected to the insertion rod (1), and the conveying path is opened on the fixed tube (602).

3. The inflatable tube according to claim 2, characterized in that: A metal mesh tube (7) is provided on the inner side of the rubber tube (601), the metal mesh tube (7) is sleeved on the outer side of the insertion rod (1), and the two ends of the metal mesh tube (7) are fixedly connected to the adjacent fixed tube (602).

4. The inflatable tube according to claim 2, characterized in that: The conveying path comprises a feed hole and an exhaust hole, which are distributed on two fixed tubes (602) and are both arranged transversely. One end of the exhaust hole close to the rubber tube (601) is fixedly connected with a partition net.

5. The inflatable tube for forming an air-filled structure according to claim 1, characterized in that: The left end of the insertion rod (1) is fixedly connected to a cylinder (3), the air inlet of the insertion rod (1) is connected to an air pump (4), and the exhaust hole of the expansion tube (6) is connected to a powder delivery pump (5).

6. The inflatable tube for forming an air-filled structure according to claim 2, characterized in that: The outer sides of the two fixed tubes (602) are each provided with a groove, and a sealing ring (8) is sleeved in the groove.

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