Jig for injection molding of aircraft wire clamp

Abstract

The utility model relates to the technical field of injection molds, in particular to an aircraft wire clamp injection molding jig which comprises an upper mold and a lower mold, a groove is formed in the lower mold, a side mold is arranged on the lower mold and located in the groove, an injection molding cavity is formed among the upper mold, the lower mold and the side mold, an embedded part is arranged in the injection molding cavity, and the embedded part is arranged in the injection molding cavity. Through the injection molding cavity formed among the upper mold, the lower mold and the side mold, it is ensured that the aircraft wire clamp obtains high size precision and shape consistency in the injection molding process, and through the arrangement of the embedded part, it is ensured that the wire clamp base body obtained after injection molding can be stably and integrally formed with the embedded part.

Description

Technical Field

[0001] This application relates to the technical field of injection molds, and particularly to a fixture for injecting aircraft wire clamps. Background Art

[0002] At present, aircraft wire clamps are indispensable parts in Boeing aircraft. They are usually used as mechanical fixing devices to ensure the stable connection of cables and wires.

[0003] Referring to Figure 1 , the traditional aircraft wire clamp 5 includes a wire clamp base body 51 and a nut 52. The production method of the aircraft wire clamp 5 is to first produce the wire clamp base body 51 by injection molding, then an approximately L-shaped mating hole 511 is formed through the inside of the wire clamp base body 51, and then the nut 52 is snap-fitted into the mating hole 511 of the wire clamp base body 51, thus completing the production of the aircraft wire clamp 5. When in use, a bolt 61 with a stud is inserted through a wire 6 on the aircraft, and the wire 6 can pass through the wire clamp base body 51 through the mating hole 511, and the bolt 61 on the wire 6 can be fixed to the nut 52, thereby fixing the wire 6 to the aircraft wire clamp 5.

[0004] Since the wire clamp base body 51 and the nut 52 are snap-fitted, this fixing method may have the problem of the nut 52 loosening in the later stage, and there is room for improvement. Summary of the Utility Model

[0005] In order to make the fixation between the wire clamp base body and the nut more reliable, this application provides a fixture for injecting aircraft wire clamps.

[0006] A fixture for injecting aircraft wire clamps provided by this application adopts the following technical solutions:

[0007] A fixture for injecting aircraft wire clamps includes an upper mold and a lower mold. A groove is formed on the lower mold, and a side mold is arranged in the groove of the lower mold. An injection cavity is formed among the upper mold, the lower mold and the side mold. An insert is arranged in the injection cavity. A first connection groove and a second connection groove are formed inside the insert. The first connection groove is communicated with the second connection groove. A first plugging member is arranged on the upper mold, and a second plugging member is arranged on the side mold. The first plugging member is in threaded connection with the first connection groove, and the second connection groove forms a plug-in fit with the second plugging member.

[0008] By adopting the above technical solution, through the injection cavity formed between the upper mold, the lower mold and the side mold, it is ensured that the aircraft wire clamp obtains high dimensional accuracy and shape consistency during the injection molding process. The first connecting groove and the second connecting groove inside the insert are precisely connected to the first plugging member of the upper mold and the second plugging member of the side mold respectively, ensuring the stability of the insert during the injection molding process, preventing the injection liquid from entering the inside of the insert, and the wire clamp base body after injection molding will be firmly integrally formed with the insert.

[0009] Preferably, positioning bolts are provided on the upper mold. The upper mold is threadedly connected to the side mold through the positioning bolts, and the lower surface of the upper mold forms an abutting fit with the upper surface of the side mold.

[0010] By adopting the above technical solution, the upper mold is threadedly connected to the side mold through the positioning bolts, thereby realizing the fixation between the upper mold and the side mold.

[0011] Preferably, the insert includes a connecting portion and a head portion. The connecting portion is fixedly arranged on the upper mold. The first connecting groove is arranged on the connecting portion, the second connecting groove is arranged on the head portion, and the diameter of the connecting portion is smaller than the diameter of the head portion.

[0012] By adopting the above technical solution, by setting the diameter of the connecting portion to be smaller than the diameter of the head portion, it is made that the insert is not easily detached from the wire clamp base body after injection molding.

[0013] Preferably, the outer surface of the connecting portion is provided with threads.

[0014] By adopting the above technical solution, by setting the threads on the outer surface of the connecting portion, the contact area between the connecting portion and the injection liquid in the injection cavity is increased, so that the connection between the formed wire clamp base body and the insert is more firm.

[0015] Preferably, a sleeve is sleeved on the first plugging member. The side mold is inserted and fitted with an abutting member, and the abutting member plugs the second plugging member.

[0016] By adopting the above technical solution, by setting the sleeve, the outer surface of the first plugging member is protected to prevent the injection liquid from leaking out from the gap of the mold during the injection molding process; at the same time, by setting the abutting member, it is prevented that the first plugging member and the second plugging member are loosened or detached due to external vibration, thereby ensuring the smooth progress of the injection molding process.

[0017] Preferably, a limiting groove is provided on the upper mold, and a limiting block is provided on the side mold. The limiting block forms an insertion fit with the limiting groove.

[0018] By adopting the above technical solution, the plug-in fit formed by the limiting block and the limiting groove restricts the relative movement between the upper mold and the side mold, thereby ensuring the stability of the injection molding process.

[0019] Preferably, a placeholder block is arranged on the lower mold, and the upper end of the placeholder block is arranged in the injection cavity.

[0020] By adopting the above technical solution, the setting of the placeholder block helps to better control the flow and distribution of materials during the injection molding process, so that the shape of the wire clamp matrix after injection molding conforms to the actual required shape.

[0021] Preferably, a first ejector rod and a second ejector rod are arranged on the lower mold. A plurality of first ejector rods are arranged in a uniform array. The upper surface of the first ejector rod is arranged parallel to the bottom end of the limiting space, and the upper surface of the second ejector rod forms an abutting fit with the lower surface of the side mold.

[0022] By adopting the above technical solution, the setting of the uniformly arrayed first ejector rod and second ejector rod enables the staff to eject the injection-molded product from the mold completely and smoothly.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Through the injection cavity formed between the upper mold, the lower mold and the side mold, and the precise connection of the first connecting groove and the second connecting groove inside the insert with the first plugging member of the upper mold and the second plugging member of the side mold respectively, the stable position of the insert during the injection molding process is ensured, and at the same time, the injection liquid is prevented from entering the inside of the insert, thereby ensuring that the aircraft wire clamp obtains high dimensional accuracy and shape consistency during the injection molding process, and the wire clamp matrix after injection molding will be firmly integrally formed with the insert;

[0025] 2. By using the sleeve and the abutting member, the outer surfaces of the first plugging member and the second plugging member are protected respectively, preventing the injection liquid from leaking out of the gap of the mold during the injection molding process, and at the same time preventing the first plugging member and the second plugging member from loosening or falling off due to external vibration, thus ensuring the smooth progress of the injection molding process;

[0026] 3. By using the setting of the uniformly arrayed first ejector rod and second ejector rod, the staff can eject the injection-molded product from the mold completely and smoothly. Description of the Drawings

[0027] Figure 1 is a schematic diagram of the overall structure mainly showing the traditional aircraft wire clamp in the background art;

[0028] Figure 2 is an isometric schematic diagram mainly showing the overall structure in the embodiment of the present application;

[0029] Figure 3 is a partial exploded view mainly showing the overall structure connection structure in the embodiment of the present application;

[0030] Figure 4 is a schematic structural diagram mainly showing the connection structure between the limit die and the side die in the embodiment of the present application;

[0031] Figure 5 is a cross-sectional view mainly showing the internal structure of the embedded component in the embodiment of the present application.

[0032] Reference numerals: 1, upper die; 11, limit die; 111, stepped hole; 112, positioning bolt; 12, base die; 13, positioning post; 14, sleeve; 15, glue injection port; 2, lower die; 21, groove; 22, side die; 23, abutting member; 24, limit groove; 25, limit block; 26, occupying block; 27, first ejector rod; 28, second ejector rod; 3, injection cavity; 4, embedded component; 41, embedded part; 411, connecting part; 4111, first connecting groove; 412, head; 4121, second connecting groove; 42, first plugging member; 43, second plugging member; 5, aircraft wire clamp; 51, wire clamp base; 511, mating hole; 52, nut; 6, electric wire; 61, bolt. Detailed implementation manners

[0033] The following will Figure 2 - with reference to the Figure 5 further describe the present application in detail.

[0034] The embodiment of the present application discloses a jig for injection molding an aircraft wire clamp.

[0035] Referring to Figure 2 and Figure 3 , a jig for injection molding an aircraft wire clamp includes an upper die 1 and a lower die 2. A groove 21 with an upward opening is formed on the lower die 2. A side die 22 is embedded in the lower die 2 at the groove 21. The upper die 1 includes a limit die 11 and a base die 12. An injection cavity 3 in the shape of a quasi-rectangular body is formed among the limit die 11, the lower die 2, and the side die 22, so as to ensure that the aircraft wire clamp 5 obtains high dimensional accuracy and shape consistency during the injection molding process.

[0036] Referring to Figure 3 and Figure 4 , a positioning post 13 is inserted and fitted on the base die 12. There are two symmetrically arranged positioning posts 13. Any positioning post 13 penetrates the base die 12 from top to bottom, and the bottom of any positioning post 13 is threadedly connected to the limit die 11, thereby realizing the fixation between the base die 12 and the limit die 11.

[0037] Referring to Figure 4, stepped holes 111 are symmetrically formed on the limit die 11, positioning bolts 112 are inserted into any of the stepped holes 111, the lower surface of the bolt head of any positioning bolt 112 forms an abutting fit with the stepped surface in any of the stepped holes 111, and the bottom of any positioning bolt 112 is threadedly connected to the side die 22, thereby realizing the fixation between the limit die 11 and the side die 22.

[0038] Refer to Figure 3 and Figure 4 , an embedded component 4 is arranged in the injection cavity 3. There are four embedded components 4, and two embedded components 4 are in a group and symmetrically distributed with respect to the injection cavity 3, and the four embedded components 4 are located on the same horizontal line. Since the structures and connection methods of the four embedded components 4 are the same, one of the embedded components 4 will be taken as an example for description.

[0039] Refer to Figure 3 and Figure 5 , the embedded component 4 includes an embedded part 41, and the embedded part 41 includes a connecting part 411 and a head part 412. The connecting part 411 is rod-shaped, a first connecting groove 4111 is formed in the connecting part 411 along the vertical direction, and threads are arranged on the outer surface of the connecting part 411. The arrangement of the threads increases the contact area between the connecting part 411 and the injection liquid in the injection cavity 3, so that the connection between the formed wire clamp base body and the embedded part 41 is more firm; the head part 412 is arranged in the shape of a hexagonal nut, and the diameter of the connecting part 411 is smaller than the diameter of the head part 412, so that the embedded part 41 is not easily detached from the wire clamp base body 51 after injection molding. A second connecting groove 4121 is vertically formed through the head part 412 in the direction perpendicular to the first connecting groove 4111, and the first connecting groove 4111 is communicated with the second connecting groove 4121.

[0040] Refer to Figure 4 and Figure 5 , the embedded component 4 includes a first plugging member 42 and a second plugging member 43. The first plugging member 42 penetrates through the limit die 11 and forms a threaded connection with the first connecting groove 4111. The second plugging member 43 forms a plugging fit with the side die 22, and the second plugging member 43 forms a plugging fit with the second connecting groove 4121, and the second plugging member 43 penetrates through the communication part of the first connecting groove 4111 and the second connecting groove 4121, preventing the injection liquid from entering the inside of the embedded part 41, ensuring the stability of the embedded part 41 during the injection process at the same time, and the wire clamp base body after injection molding will be firmly integrally formed with the embedded part 41.

[0041] Refer to Figure 4, a sleeve 14 is provided on the limiting die 11. There are four sleeves 14, and any one of the sleeves 14 is arranged with an opening facing downwards. Any one of the sleeves 14 is sleeved on any one of the first blocking members 42. A contact member 23 is inserted and fitted on the side die 22. There are four contact members 23. Any one of the contact members 23 forms a contact fit with the side of the second blocking member 43 away from the embedded member 41. By providing the sleeve 14, the outer surface of the first blocking member 42 is protected, preventing the injection liquid from leaking out of the gap of the mold during the injection process; at the same time, by providing the contact member 23, the second blocking member 43 is prevented from loosening or falling off due to external vibration, thus ensuring the smooth progress of the injection process.

[0042] Refer to Figure 4 , limiting grooves 24 are symmetrically arranged on one side of the limiting die 11 close to the side die 22. The side die 22 is provided with limiting blocks 25 corresponding to the number and positions of the limiting grooves 24. Any one of the limiting blocks 25 forms an insertion fit with the corresponding limiting groove 24, further restricting the relative movement between the limiting die 11 and the side die 22, thus ensuring the stability of the injection process.

[0043] Refer to Figure 4 , a placeholder block 26 for occupying the injection cavity 3 is inserted and fitted on the lower die 2. There are four placeholder blocks 26. Two placeholder blocks 26 are symmetrically arranged at both ends of the lower die 2, and the other two placeholder blocks 26 are symmetrically arranged at the middle position of the lower die 2. The four placeholder blocks 26 are arranged along the same horizontal line. The upper end of any one of the placeholder blocks 26 is arranged in the injection cavity 3. The setting of the placeholder block 26 helps to better control the flow and distribution of materials during the injection process, so that the shape of the wire clamp base after injection molding conforms to the actual required shape.

[0044] Refer to Figure 3 and Figure 4 , a glue injection port 15 is opened at the top of the base die 12. The glue injection port 15 is communicated with the injection cavity 3, making the injection process more efficient and smooth, reducing the injection time and material waste.

[0045] Refer to Figure 3, a first ejector rod 27 and a second ejector rod 28 are inserted into the lower mold 2. The thickness of the second ejector rod 28 is thicker than that of the first ejector rod 27. There are eight first ejector rods 27, and two first ejector rods 27 are arranged in a linear array as a group. The upper surface of any first ejector rod 27 is arranged parallel to the bottom end of the injection cavity 3, so as to facilitate the first ejector rod 27 to support the wire clamp base body that has just been injection-molded and has a soft material, reducing the risk of deformation of the wire clamp base body; there are two second ejector rods 28, and the two second ejector rods 28 are symmetrically arranged on the lower mold 2. The upper surface of any second ejector rod 28 forms an abutting fit with the lower surface of the side mold 22, so that the side mold 22 and the wire clamp base body are ejected from the mold together, enabling the staff to eject the injection-molded product from the mold completely and smoothly.

[0046] The implementation principle of the embodiment of the present application is as follows: In the mold opening stage, the upper mold 1 and the lower mold 2 are in a separated state. The side mold 22 has been embedded in the groove 21 of the lower mold 2. An open space is formed between the limit mold 11, the lower mold 2 and the side mold 22. The positioning block 25 is inserted into the positioning groove 24. The first connecting groove 4111 opened in the insert 41 is threadedly connected with the first plugging member 42 by a bolt, and the second connecting groove 4121 forms an insertion fit with the second plugging member 43.

[0047] In the mold closing stage, the upper mold 1 slowly descends until the lower surface of the limit mold 11 is in close contact with the upper surface of the side mold 22. A closed injection cavity 3 is formed between the limit mold 11, the lower mold 2 and the side mold 22. The injection molding machine injects the molten injection liquid into the injection cavity 3 through the injection port 15 at the top of the base mold 12. The injection liquid cools and solidifies in the injection cavity 3 and tightly combines with the insert 41 to form a stable wire clamp base body.

[0048] After the injection molding is completed, the injection molding machine stops working, and the first ejector rod 27 and the second ejector rod 28 start to work. Then the formed wire clamp base body and the side mold 22 are easily ejected from the mold. At this time, the staff can remove the first plugging member 42 and the second plugging member 43 from the insert 41, so that a wire routing space is formed in the insert 41 on the wire clamp base body 51, which is convenient for the later use of the product.

[0049] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A jig for injection molding of aircraft wire clips, characterized in that: The invention comprises an upper mold (1) and a lower mold (2), wherein a groove (21) is provided on the lower mold (2), and a side mold (22) is provided on the lower mold (2) in the groove (21); an injection molding cavity (3) is formed between the upper mold (1), the lower mold (2) and the side mold (22); an insert (41) is provided in the injection molding cavity (3), and a first connecting groove (4111) and a second connecting groove (4121) are provided inside the insert (41); the first connecting groove (4111) is communicated with the second connecting groove (4121); a first blocking piece (42) is provided on the upper mold (1), and a second blocking piece (43) is provided on the side mold (22); the first blocking piece (42) is threadedly connected to the first connecting groove (4111), and the second connecting groove (4121) is plug-fitted with the second blocking piece (43).

2. The aircraft wire clamp injection molding jig according to claim 1, characterized in that: The upper mold (1) is provided with a positioning bolt (112), and the upper mold (1) is threadedly connected with the side mold (22) through the positioning bolt (112), and the lower surface of the upper mold (1) and the upper surface of the side mold (22) form an abutment fit.

3. The aircraft wire clamp injection molding jig according to claim 2, characterized in that: The embedded component (41) comprises a connecting portion (411) and a head portion (412); the connecting portion (411) is fixedly arranged on the upper mold (1); the first connecting groove (4111) is arranged on the connecting portion (411); the second connecting groove (4121) is arranged on the head portion (412); and the diameter of the connecting portion (411) is smaller than the diameter of the head portion (412).

4. The aircraft wire clamp injection molding jig according to claim 3, characterized in that: The outer surface of the connecting portion (411) is provided with threads.

5. The aircraft wire clamp injection molding jig according to claim 1, characterized in that: The first blocking member (42) is sleeved with a sleeve (14), the side mold (22) is plugged with an abutment member (23), and the abutment member (23) blocks the second blocking member (43).

6. The aircraft wire clamp injection molding jig according to claim 1, characterized in that: A limiting groove (24) is provided on the upper mold (1), and a limiting block (25) is provided on the side mold (22), and the limiting block (25) and the limiting groove (24) are plug-fitted.

7. The aircraft wire clamp injection molding jig according to claim 1, characterized in that: A placeholder block (26) is provided on the lower mold (2), and the upper end of the placeholder block (26) is arranged in the injection molding cavity (3).

8. The aircraft wire clamp injection molding jig according to claim 1, characterized in that: The lower mold (2) is provided with a first ejector rod (27) and a second ejector rod (28), wherein a plurality of the first ejector rods (27) are arranged in a uniform array, the upper surface of the first ejector rod (27) is arranged parallel to the bottom end of the injection cavity (3), and the upper surface of the second ejector rod (28) is in abutment with the lower surface of the side mold (22).

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