Special-shaped pipe fitting die

Abstract

The invention relates to the technical field of injection molds, in particular to a special-shaped pipe fitting mold which comprises a fixed mold plate, a movable mold plate and a middle mold plate, the middle mold plate is installed on the movable mold plate, positioning columns are arranged on the four corners of the middle mold plate, the fixed mold plate is provided with positioning holes connected with the positioning columns in a matched mode, and an injection molding hole is formed in the middle of the fixed mold plate. A pipe fitting mold is arranged between the middle mold plate and the fixed mold plate, a demolding mechanism is arranged between the movable mold plate and the middle mold plate, first core pulling mechanisms are arranged on the two side edges of the middle mold plate, and second core pulling mechanisms are arranged on the other two side edges of the middle mold plate. By arranging the demolding mechanism, the first core-pulling mechanisms and the second core-pulling mechanisms, rapid demolding can be achieved, it is guaranteed that a pipe fitting can be subjected to injection molding, the mold can conduct injection molding on a multi-pipe-opening special-shaped pipe fitting, the number and positions of the first core-pulling mechanisms and the second core-pulling mechanisms can be automatically adjusted according to use requirements, the demolding mechanism can achieve automatic demolding, manual interference is small, and the mold is convenient to operate. Manpower and manpower cost are saved, and efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to a special-shaped pipe fitting mold. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of the injection molding method are fast production speed, high efficiency, automated operation, a wide variety of colors and patterns, shapes from simple to complex, sizes from large to small, and the product size is precise, the product is easy to update, and can be made into parts with complex shapes. Injection molding is suitable for mass production and molding processing fields such as complex-shaped products. Special-shaped pipe fittings molds are required in the injection molding process.

[0003] After the existing special-shaped pipe fitting mold workpiece is cooled and formed, the mold shell needs to be manually disassembled, and then the inner mold is taken out, and finally the mold and the workpiece are separated by tools. The demolding process takes a long time, which reduces the production efficiency of the overall pipe body workpiece.

[0004] Therefore, it is necessary to propose a special-shaped pipe fitting mold in view of the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a special-shaped pipe fitting mold to solve the problem in the above background technology that after the special-shaped pipe fitting mold workpiece is cooled and formed, the mold shell needs to be manually disassembled, and then the inner mold needs to be taken out, and finally the mold and the workpiece need to be separated by tools, and the demolding process takes a long time.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A special-shaped pipe fitting mold comprises a fixed template, a movable template and a middle template, wherein the middle template is installed on the movable template, the four corners of the middle template are provided with positioning columns, the fixed template is provided with positioning holes matched with the positioning columns, the middle position of the fixed template is provided with injection holes, a pipe fitting mold is provided between the middle template and the fixed template, a demoulding mechanism is provided between the movable template and the middle template, two sides of the middle template are provided with first core pulling mechanisms, and the other two sides of the middle template are provided with second core pulling mechanisms.

[0008] Preferably, the demoulding mechanism comprises a push plate and a push rod, one end of a plurality of push rods is connected to the middle position of one end surface of the push plate, and the other ends of the plurality of push rods penetrate the middle template.

[0009] Preferably, the four corners of the push plate are sleeved with guide rods, the two ends of the guide rods are respectively connected to the fixed template and the middle template, and the guide rods are sleeved with springs.

[0010] Preferably, the first core pulling mechanism comprises a first hydraulic cylinder, a first moving block and a first core pulling, the output end of the first hydraulic cylinder is connected to the first moving block, and the first core pulling is connected to the first moving block.

[0011] Preferably, the second core pulling mechanism comprises a second hydraulic cylinder, a second moving block and a second core pulling mechanism, the output end of the second hydraulic cylinder is connected to the second moving block, and the second core pulling mechanism is connected to the second moving block.

[0012] Preferably, a through hole is provided in the middle of the movable template.

[0013] Preferably, a push rod is connected to the middle position of the other end surface of the push plate, and the push rod passes through the through hole and is connected to a push rod cylinder.

[0014] Preferably, a pipe fitting cavity 401 for injection molding the heteromorphic pipe fitting 8 is provided in the cavity insert 4 .

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention can quickly demould by arranging a demoulding mechanism, a first core pulling mechanism and a second core pulling mechanism to ensure that the pipe fittings can be injection molded, the mold can injection mold special-shaped pipe fittings with multiple nozzles, the quantity and position of the first core pulling mechanism and the second core pulling mechanism can be adjusted according to the use requirements, and the injection molding of multiple pipe fittings can be realized. The demoulding mechanism can realize automatic demoulding, and each component can be fixed in a corresponding position when the mold is closed, and there will be no large difference in the pipe fittings injected each time due to manual operation. The injection molded pipe fittings have high precision, do not require too much secondary processing, have less manual interference, save manpower and manpower cost, and have high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figures 1 to 3 It is a structural diagram of the present invention;

[0018] Figure 4 It is a schematic diagram of the expanded structure of the present invention;

[0019] Figure 5 It is a side schematic diagram of the present invention;

[0020] Figure 6 and Figure 7 It is a schematic diagram of the interior of the middle template of the present invention;

[0021] Figure 8 It is a structural diagram of a fixed template of the present invention;

[0022] Fig. 9 It is a structural diagram of the pipe cavity of the present invention;

[0023] Fig.10 It is a structural diagram of the demoulding mechanism of the present invention;

[0024] Fig.11 It is a structural diagram of the first core-pulling mechanism of the present invention;

[0025] Fig.12 It is a structural diagram of the second core-pulling mechanism of the present invention;

[0026] Fig.13 This is a structural diagram of an injection molded heterosexual pipe fitting of the present invention;

[0027] Fig.14 This is a schematic diagram of a second embodiment of the present invention.

[0028] Reference numerals in the figure: 1. fixed template; 2. movable template; 3. middle template; 101. positioning hole; 102. injection hole; 201. through hole; 301. positioning column; 4. cavity insert; 401. pipe cavity; 5. demoulding mechanism; 501. push plate; 502. push rod; 503. guide rod; 504. spring; 505. push rod; 506. push rod cylinder; 6. first core pulling mechanism; 601. first hydraulic cylinder; 602. first moving block; 603. first core pulling 7. second core pulling mechanism; 701. second hydraulic cylinder; 702. second moving block; 703. second core pulling; 8. injection molding of special-shaped pipe fittings; 9. auxiliary core pulling mechanism. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0032] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0033] The following is combined with Figures 1 to 14 The present application is further described in detail.

[0034] Example 1

[0035] A special-shaped pipe fitting mold, such as Figure 1-13 As shown, it includes a fixed template 1, a movable template 2, and a middle template 3, and the middle template 3 is installed on the movable template 2. The four corners of the middle template 3 are all provided with positioning columns 301, the fixed template 1 is provided with positioning holes 101 that are matched and connected with the positioning columns 201, and the middle position of the fixed template 1 is provided with an injection hole 102, and a cavity insert 4 is provided between the middle template 3 and the fixed template 1, and two pipe fitting cavities 401 for injection molding of heterosexual pipe fittings 8 are provided in the cavity insert 4, and the two pipe fitting cavities 401 are centrally symmetrically arranged.

[0036] A demoulding mechanism 5 is arranged between the movable template 2 and the middle template 3, and the demoulding mechanism 5 includes a push plate 501 and a push rod 502. One end of a plurality of push rods 502 are connected to the middle position of one end surface of the push plate 501, and the other ends of the plurality of push rods 502 pass through the middle template 3. The four corners of the push plate 501 are provided with guide rods 503, and the two ends of the guide rods 503 are respectively connected to the fixed template 1 and the middle template 2. The guide rods 503 are provided with springs 504, which play the role of shock absorption, buffering and resetting.

[0037] The middle template 3 has first core-pulling mechanisms 6 on two sides thereof, and the middle template 3 has second core-pulling mechanisms 7 on the other two sides thereof.

[0038] The first core pulling mechanism 6 includes a first hydraulic cylinder 601, a first moving block 602, a first core pulling 603 and a second core pulling 604. The output end of the first hydraulic cylinder 601 is connected to the first moving block 602. The second core pulling 604 and the first core pulling 603 are connected in parallel to the first moving block 602. The second core pulling 604 and the first core pulling 603 have different lengths and are respectively used for core pulling at different parts of the straight pipe sections of two pipe fittings.

[0039] The second core pulling mechanism 7 comprises a second hydraulic cylinder 701 , a second moving block 702 and a second core pulling mechanism 703 . The output end of the second hydraulic cylinder 701 is connected to the second moving block 702 , and the second core pulling mechanism 703 is connected to the second moving block 702 .

[0040] A through hole 203 is provided in the middle position of the movable template 2, and a push rod 505 is connected to the middle position of the other end surface of the push plate 501. The push rod 505 passes through the through hole and is connected to a push rod cylinder 506. When demolding is used, the push rod cylinder 506 drives the push rod 505, and the push rod 505 drives the push plate 501. The push plate 501 further drives several push rods 502 to move. The push rods 502 pass through the middle template 3 and enter the cavity insert 4 to eject the injection molded heterosexual pipe fittings 8, thereby realizing the demolding of the injection molded heterosexual pipe fittings 8.

[0041] Example 2

[0042] like Fig.14 As shown, several auxiliary core-pulling mechanisms 9 are added on the basis of Example 1, and a total of three cavity inserts 4 are provided. The middle cavity insert 4 can simultaneously inject two injection-molded heterosexual pipe fittings 8, and each cavity insert 4 on both sides can simultaneously inject one injection-molded heterosexual pipe fitting 8, so that four injection-molded heterosexual pipe fittings 8 can be injected together. In addition, in actual use, more auxiliary shaft core mechanisms 9 are added on this basis, so that the injection molding of multiple injection-molded heterosexual pipe fittings 8 can be realized.

[0043] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary in all respects, and the description is non-limiting, and the scope of the invention is defined by the appended claims rather than the above description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A special-shaped pipe fitting mold, characterized in that: The invention comprises a fixed template (1), a movable template (2), and a middle template (3), wherein the middle template (3) is installed on the movable template (2), the four corners of the middle template (3) are provided with positioning columns (301), the fixed template (1) is provided with positioning holes (101) which are matched and connected with the positioning columns (201), an injection hole (102) is provided in the middle of the fixed template (1), a pipe fitting mold (4) is provided between the middle template (3) and the fixed template (1), a demoulding mechanism (5) is provided between the movable template (2) and the middle template (3), the two sides of the middle template (3) are provided with first core pulling mechanisms (6), and the other two sides of the middle template (3) are provided with second core pulling mechanisms (7).

2. A special-shaped pipe fitting mold according to claim 1, characterized in that: The demoulding mechanism (5) comprises a push plate (501) and push rods (502), one end of each of the push rods (502) is connected to the middle position of one end surface of the push plate (501), and the other ends of each of the push rods (502) penetrate the middle mold plate (3).

3. A special-shaped pipe fitting mold according to claim 2, characterized in that: The four corners of the push plate (501) are sleeved with guide rods (503), the two ends of the guide rods (503) are respectively connected to the fixed mold plate (1) and the middle mold plate (2), and the guide rods (503) are sleeved with springs (504).

4. A special-shaped pipe fitting mold according to claim 1, characterized in that: The first core pulling mechanism (6) comprises a first hydraulic cylinder (601), a first moving block (602) and a first core pulling (603), wherein the output end of the first hydraulic cylinder (601) is connected to the first moving block (602), and the first core pulling (603) is connected to the first moving block (602).

5. The special-shaped pipe fitting mold according to claim 1, characterized in that: The second core-pulling mechanism (7) comprises a second hydraulic cylinder (701), a second moving block (702) and a second core-pulling mechanism (703); the output end of the second hydraulic cylinder (701) is connected to the second moving block (702), and the second core-pulling mechanism (703) is connected to the second moving block (702).

6. A special-shaped pipe fitting mold according to claim 1, characterized in that: A through hole (203) is provided in the middle of the movable platen (2).

7. A special-shaped pipe fitting mold according to claim 2, characterized in that: A push rod (505) is connected to the middle position of the other end surface of the push plate (501), and the push rod (505) passes through the through hole and is connected to a push rod cylinder (506).

8. The special-shaped pipe fitting mold according to claim 1, characterized in that: The pipe fitting mold (4) is provided with a pipe fitting cavity (401) for injection molding a special-shaped pipe fitting (8).

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