One-time forming device for red copper pipe fitting

Abstract

The utility model discloses a one-step forming device for a red copper pipe fitting, which comprises a forming die, a first forming die, a second forming die and a third forming die, the forming die comprises two or more than two forming holes, and each forming hole comprises two or more than two openings; each water swelling forming mechanism comprises a forming base, a plurality of water swelling forming mechanisms and a plurality of water swelling forming mechanisms, and each forming base is provided with a water swelling channel; the two or more forming core rods are connected with the forming base; and the forming core rod in at least one water swelling forming mechanism is provided with an inner hole communicated with the water swelling channel. One device can achieve one-time forming of a plurality of pipe fittings, and the forming efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of copper pipe fittings, in particular to a one-step forming device for copper pipe fittings. Background Art

[0002] Copper pipe fittings are divided into 90° elbow fittings, tee fittings, U-shaped pipes, etc. according to different pipe shapes and connection methods. Some copper pipe fittings, such as straight tee fittings, have been formed by water expansion forming. Water expansion forming is to put the processed raw materials into the mold, and fill the mold space with the product by injecting water at a certain pressure to achieve forming. Compared with the traditional tank lead process, the water expansion forming process is environmentally friendly and efficient, and has been widely used, but the existing water expansion forming technology is mainly one-to-one, that is, one device can only process one product at a time. Utility Model Content

[0003] The utility model provides a one-time forming device for copper pipe fittings. One forming device can produce multiple products.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A one-step forming device for a copper pipe fitting, comprising:

[0006] A molding die, wherein the molding die comprises two or more molding holes, and each of the molding holes comprises two or more openings;

[0007] A plurality of water swelling forming mechanisms, each of the water swelling forming mechanisms comprising:

[0008] A forming base, wherein the forming base has a water swelling channel;

[0009] Two or more forming mandrels connected to the forming base;

[0010] Wherein, the forming core rod in at least one of the water swelling forming mechanisms has an inner hole connected to the water swelling channel.

[0011] The above-mentioned one-step forming device for copper pipe fittings, wherein the forming base comprises: a base flange, a base body connected to the base flange, and a gland detachably connected to the base body;

[0012] Wherein, the water rising channel is arranged in the base body.

[0013] The above-mentioned one-step forming device for copper pipe fittings, wherein the water swelling channel comprises:

[0014] Main water hole;

[0015] The branch water holes connected to the main water hole, each of which is directly opposite to the inner hole of the forming core rod.

[0016] In the above-mentioned one-step forming device for copper pipe fittings, the main water through hole extends along a first direction, and the plurality of branch water through holes extend along a second direction.

[0017] In the above-mentioned one-step forming device for copper pipe fittings, a positioning hole is opened on the base body, the water branch hole forms an opening in the positioning hole, and the forming core rod is arranged in the positioning hole.

[0018] In the above-mentioned one-step forming device for copper pipe fittings, the forming mandrel comprises: a mandrel head and a mandrel rod portion connected to the mandrel head, and the inner hole passes through the mandrel head and the mandrel rod portion.

[0019] The above-mentioned one-step forming device for copper pipe fittings, wherein the mandrel head is arranged in the positioning hole;

[0020] The gland is provided with a gland through hole, the inner diameter of which matches the inner diameter of the mandrel rod portion, so as to limit the mandrel head portion to be located in the positioning hole.

[0021] The above-mentioned one-step forming device for copper pipe fittings, wherein the mandrel rod portion includes: a first part connected to the mandrel head, a second part connected to the first part, the outer diameter of the first part is larger than the outer diameter of the second part, and the end of the second part has a chamfer.

[0022] The above-mentioned one-step forming device for copper pipe fittings, wherein the forming die is rectangular;

[0023] It comprises two water swelling forming mechanisms, and the two water swelling forming mechanisms are arranged on two opposite sides or two adjacent sides of the forming mold;

[0024] It comprises three water swelling forming mechanisms, and the three water swelling forming mechanisms are respectively arranged on adjacent sides of the forming mold.

[0025] In the above-mentioned one-step forming device for copper pipe fittings, a plurality of the forming holes are arranged in parallel, and a plurality of the forming mandrels are arranged in parallel.

[0026] Due to the adoption of the above technology, the utility model has the following positive effects compared with the prior art:

[0027] (1) The utility model can realize one-time forming of multiple pipe fittings with one device, and the forming efficiency is high.

[0028] (2) The utility model can select the number of water swelling forming mechanisms and the number of forming core rods according to actual needs, and can select the forming core rods with inner holes or closed according to actual needs, so as to achieve a more reasonable layout of the production site. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of a one-step forming device for a copper pipe fitting of the utility model.

[0030] Figure 2 It is a schematic diagram of the water swelling forming mechanism of the one-step forming device for copper pipe fittings of the utility model.

[0031] Figure 3 It is a schematic diagram of a one-step forming device for a copper pipe fitting of the utility model.

[0032] Figure 4 The one-step forming device of the copper pipe fitting of the utility model Figure 3 An enlarged schematic diagram of the middle part of .

[0033] Figure 5 The utility model is a schematic diagram of a forming die of a one-step forming device for a copper pipe fitting.

[0034] Figure 6 It is a schematic diagram of a forming base of a one-step forming device for a copper pipe fitting of the utility model.

[0035] The symbols in the drawings of the specification include:

[0036] 1. Molding die; 11. Molding hole; 12. Opening; 2. Water swelling molding mechanism; 21. Molding base; 211. Base flange; 212. Base body; 213. Pressure cover; 214. Positioning hole; 215. Pressure cover through hole; 22. Water swelling channel; 221. Main water hole; 222. Branch water hole; 23. Molding mandrel; 231. Mandrel head; 232. Mandrel rod; 233. First part; 234. Second part; 24. Inner hole. DETAILED DESCRIPTION

[0037] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0038] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “inside”, “outside”, “front”, “back”, “lateral” and “vertical” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the device or component referred to must have a specific direction and therefore should not be understood as a limitation on the present invention.

[0039] It should be specially explained that the terms “horizontal” and “vertical” in the present invention are used to illustrate a rough positional relationship, rather than a strict “horizontal plane” or “vertical plane”.

[0040] See also Figures 1 to 6 As shown, a one-time forming device for copper pipe fittings of a preferred embodiment is shown, comprising: a forming die 1 and a water swelling forming mechanism 2, wherein the forming die 1 comprises two or more forming holes 11, and each forming hole 11 comprises two or more openings 12.

[0041] Furthermore, each water swelling forming mechanism 2 comprises: a forming base 21 and two or more forming core rods 23 , wherein the forming base 21 has a water swelling channel 22 ; and each forming core rod 23 has an inner hole 24 connected to the water swelling channel 22 .

[0042] It should be particularly pointed out that the water expansion forming mechanism 2 in this embodiment includes two or more forming core rods, but in the entire mechanism, the water expansion forming mechanism 2 is not limited to be used in conjunction with other forming mechanisms. In other words, other forming mechanisms are not limited to having only one forming core rod.

[0043] For example, in one embodiment, the primary forming device of the copper pipe fitting includes: a forming die, and a plurality of water swelling forming mechanisms 2 each having two forming mandrels 23 .

[0044] In other embodiments, the one-time forming device of the copper pipe fitting includes: a forming mold, a first water expansion forming mechanism, and a second water expansion forming mechanism, wherein the first water expansion forming mechanism is the water expansion forming mechanism 2 in this embodiment, which has two forming core rods 23, and the second water expansion forming mechanism has a substantially same structure as the first water expansion forming mechanism, the difference being that it only has one forming core rod 23.

[0045] In addition, it should be particularly pointed out that the forming mandrel 23 of the water swelling forming mechanism 2 may have an inner hole 24 or may not have the inner hole 24 , that is, be closed.

[0046] For example, see Figure 1 As shown, Figure 1 The water swelling forming mechanism 2 on the left side is equipped with two forming mandrels 23 with inner holes 24. Figure 1 The water expansion forming mechanism 2 on the middle right is equipped with two closed forming mandrels 23 .

[0047] Of course, in an embodiment not shown, it is obvious that the same water expansion forming mechanism 2 can be equipped with a forming mandrel with an inner hole 24 and a closed forming mandrel.

[0048] In summary, in various embodiments of the present invention, the number of water expansion forming mechanisms 2 can be selected according to actual needs, the number of forming core rods 23 on the water expansion forming mechanism 2 can be selected according to actual needs, and whether the forming core rods on the water expansion forming mechanism 2 have an inner hole 24 or are closed can also be selected according to actual needs.

[0049] Specifically, when using the utility model, a plurality of pipes to be processed are respectively placed in a plurality of forming holes 11 of the forming mold 1, and the water expansion forming mechanism 2 is operated to make the forming mandrel 23 enter the forming hole 11, and the fluid enters the inner hole 24 of one of the forming mandrels 23 through the water expansion channel 22, and enters the interior of the forming hole 11, so that the fluid pressure acts on the inner wall of the pipe to be processed, thereby implementing water expansion forming.

[0050] Further, as a preferred embodiment, the molded base 21 includes: a base flange 211 , a base body 212 connected to the base flange 211 , and a pressure cover 213 detachably connected to the base body 212 .

[0051] Further, as a preferred embodiment, the water rise channel 22 is disposed in the base body 212 .

[0052] Furthermore, as a preferred embodiment, the water rising channel 22 includes: a main water hole 221 and branch water holes 222 connected to the main water hole 221 , and each branch water hole 222 is directly opposite to the inner hole 24 of a forming core rod 23 .

[0053] Further, as a preferred embodiment, the main water through hole 221 extends along the first direction, and the plurality of branch water through holes 222 extend along the second direction.

[0054] The first direction is Figure 1 , Figure 2 The vertical direction in the second direction is Figure 1 , Figure 2 Horizontal direction in .

[0055] Furthermore, as a preferred embodiment, a positioning hole 214 is opened on the base body 212 , the water-through hole 222 is opened in the positioning hole 214 , and the forming core rod 23 is disposed in the positioning hole 214 .

[0056] Specifically, the positioning hole 214 is a light hole.

[0057] Further, as a preferred embodiment, the forming mandrel 23 includes: a mandrel head 231 and a mandrel rod 232 connected to the mandrel head 231 , and the inner hole 24 passes through the mandrel head 231 and the mandrel rod 232 .

[0058] Further, as a preferred embodiment, the core rod head 231 is disposed in the positioning hole 214 .

[0059] Furthermore, as a preferred embodiment, a gland through hole 215 is provided on the gland 213 , and the inner diameter of the gland through hole 215 matches the inner diameter of the mandrel rod portion 232 , so as to limit the mandrel head 231 in the positioning hole 214 .

[0060] Further, as a preferred embodiment, the mandrel rod portion 232 includes: a first portion 233 connected to the mandrel head 231, and a second portion 234 connected to the first portion 233, the outer diameter of the first portion 233 is greater than the outer diameter of the second portion 234, and the end of the second portion 234 has a chamfer.

[0061] Further, as a preferred embodiment, the molding die 1 is rectangular.

[0062] Furthermore, as a preferred embodiment, two water swelling forming mechanisms 2 are included, and the two water swelling forming mechanisms 2 are arranged on two opposite sides or two adjacent sides of the forming mold 1 .

[0063] Specifically, when two water swelling forming mechanisms 2 are arranged on opposite sides of the forming mold 1, two or more parallel straight tubes or two U-shaped tubes arranged back to back can be formed simultaneously.

[0064] Specifically, when two water expansion forming mechanisms 2 are arranged on two adjacent sides of the forming mold 1, two or even more 90° elbows can be formed simultaneously.

[0065] Furthermore, as a preferred embodiment, three water swelling forming mechanisms 2 are included, and the three water swelling forming mechanisms 2 are respectively arranged on adjacent sides of the forming mold 1 .

[0066] Furthermore, as a preferred embodiment, it includes two first water swelling forming mechanisms and two second water swelling forming mechanisms, wherein the two first water swelling forming mechanisms are the water swelling forming mechanisms 2 in this embodiment, and the two second water swelling forming mechanisms only have one forming core rod 23 .

[0067] Specifically, in this embodiment, the two first water swelling forming mechanisms are relatively arranged on two sides of the forming mold, and the two second water swelling forming mechanisms are also relatively arranged on the other two sides of the forming mold 1, so that two three-way pipes arranged back to back can be formed simultaneously.

[0068] Further, as a preferred embodiment, a plurality of forming holes 11 are arranged in parallel, and a plurality of forming core rods 23 are arranged in parallel.

[0069] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A one-step forming device for copper pipe fittings, characterized in that: include: A molding die, wherein the molding die comprises two or more molding holes, and each of the molding holes comprises two or more openings; A plurality of water swelling forming mechanisms, each of the water swelling forming mechanisms comprising: A forming base, wherein the forming base has a water swelling channel; Two or more forming mandrels connected to the forming base; Wherein, the forming core rod in at least one of the water swelling forming mechanisms has an inner hole connected to the water swelling channel.

2. The one-step forming device for copper pipe fittings according to claim 1, characterized in that: The molded base comprises: a base flange, a base body connected to the base flange, and a pressure cover detachably connected to the base body; Wherein, the water rising channel is arranged in the base body.

3. The one-step forming device for copper pipe fittings according to claim 2, characterized in that: The water rising channel comprises: Main water hole; The branch water holes connected to the main water hole, each of which is directly opposite to the inner hole of the forming core rod.

4. The one-step forming device for copper pipe fittings according to claim 3 is characterized in that: The main water through hole extends along a first direction, and the plurality of branch water through holes extend along a second direction.

5. The one-step forming device for copper pipe fittings according to claim 3 is characterized in that: A positioning hole is provided on the base body, the water distribution hole forms an opening in the positioning hole, and the forming core rod is arranged in the positioning hole.

6. The one-step forming device for copper pipe fittings according to claim 5, characterized in that: The forming mandrel comprises a mandrel head and a mandrel rod portion connected to the mandrel head, and the inner hole passes through the mandrel head and the mandrel rod portion.

7. The one-step forming device for copper pipe fittings according to claim 6, characterized in that: The mandrel head is arranged in the positioning hole; The gland is provided with a gland through hole, the inner diameter of which matches the inner diameter of the mandrel rod portion, so as to limit the mandrel head portion to be located in the positioning hole.

8. The one-step forming device for copper pipe fittings according to claim 6, characterized in that: The mandrel rod portion comprises: a first portion connected to the mandrel head and a second portion connected to the first portion, the outer diameter of the first portion is greater than the outer diameter of the second portion, and the end of the second portion has a chamfer.

9. The one-step forming device for copper pipe fittings according to claim 1, characterized in that: The forming mold is arranged in a rectangular shape; It comprises two water swelling forming mechanisms, and the two water swelling forming mechanisms are arranged on two opposite sides or two adjacent sides of the forming mold; It comprises three water swelling forming mechanisms, and the three water swelling forming mechanisms are respectively arranged on adjacent sides of the forming mold.

10. The one-step forming device for copper pipe fittings according to claim 1, characterized in that: The plurality of forming holes are arranged in parallel, and the plurality of forming mandrels are arranged in parallel.

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