A detachable tee mold for fiber winding

Abstract

This invention discloses a detachable tee mold for fiber winding, relating to the field of injection molding equipment technology. Its main structure includes a handle assembly, an arm assembly, pressure plates, a mandrel, and positioning blocks. One end of the handle assembly is connected to the middle of the arm assembly. A pressure plate is respectively provided at the other end of the handle assembly and both ends of the arm assembly. A positioning block is respectively provided inside the middle of the arm assembly, at both inner ends of the arm assembly, and inside the other end of the handle assembly. Adjacent positioning blocks are connected by the mandrel. The mold of this invention is detachable, allowing for direct disassembly to obtain the product. The mold of this invention can be reused repeatedly, eliminating the need for repeated manufacturing.

Description

Technical Field

[0001] This invention relates to the field of injection molding equipment technology, and in particular to a detachable tee mold for fiber winding. Background Technology

[0002] Fiber-wound fiberglass pipes offer advantages such as corrosion resistance, lightweight, high specific strength, and design flexibility. T-joints made from fiber-wound fibers boast high strength and can be used to transport medium- and high-pressure corrosive liquids. A tee joint is formed by the intersection of two cylinders, typically perpendicular to each other to form a T-shape, hence sometimes called a T-shaped pipe. A T-shaped pipe consists of a main pipe (or arm) and a branch pipe (or handle). Because of the branch pipe, the winding pattern in the area where it intersects with the main pipe is complex. To address the winding pattern, winding method, and design suitable mechanical motion, a suitable type of mandrel must be designed to cover all surfaces of the tee joint with fibers of as equal thickness as possible to withstand the complex stresses within the tee joint.

[0003] There are two common types of core molds:

[0004] 1. T-shaped core mold with two intersecting cylinders

[0005] like Figure 1 As shown, the T-shaped mandrel with two intersecting cylinders is made of metal, with the arms and handle being thin-walled metal tubes. One end of the handle is machined into a saddle shape so that it can ride on the arms.

[0006] The advantages of this type of mandrel are its simple structure, easy linear conversion, accurate fiber positioning on the mandrel, and resistance to slippage.

[0007] 2. T-shaped mandrel mold with a spherical core

[0008] like Figure 2 As shown, the core mold has various forms such as sphere, ellipsoid, and quadratic surface rotation body in the middle, which are T-shaped tube core molds.

[0009] The fiber entanglement at the intersection of the two cylinders in this type of mandrel is relatively good, allowing it to withstand higher stress.

[0010] Existing molds are difficult to demold when producing non-axisymmetric fiber wound products. Summary of the Invention

[0011] To solve the above technical problems, the present invention provides a detachable tee mold for fiber winding. After curing, the mold can be directly removed to obtain the product, thus solving the problem of difficult demolding of non-axisymmetric fiber winding products.

[0012] To achieve the above objectives, the present invention provides the following solution:

[0013] This invention provides a detachable tee tube mold for fiber winding, comprising a handle assembly, an arm assembly, a pressure plate, a mandrel, and positioning blocks; one end of the handle assembly is connected to the middle of the arm assembly; a pressure plate is respectively provided at the other end of the handle assembly and at both ends of the arm assembly; a positioning block is respectively provided inside the middle of the arm assembly, at both inner ends of the arm assembly, and inside the other end of the handle assembly; adjacent positioning blocks are connected by the mandrel.

[0014] Optionally, the handle assembly includes a first handle, a second handle, a third handle, and a fourth handle; the first handle, the second handle, the third handle, and the fourth handle are assembled to form the handle portion of the tee pipe mold.

[0015] Optionally, the arm assembly includes an upper arm, a lower arm, a left arm, and a right arm; the upper arm, the lower arm, the left arm, and the right arm are spliced ​​together to form the wall portion of a three-way pipe mold; a cylindrical saddle extending upward is provided on the outer wall of the middle part of the upper arm, the diameter of the saddle being equal to the inner diameter of the handle assembly, and the saddle being used for connection with the handle assembly.

[0016] Optionally, a second positioning block is provided in the inner center of the arm assembly, and threaded holes are provided on both sides and the top of the second positioning block, the threaded holes being used for threaded connection with one end of the mandrel.

[0017] Optionally, a fourth positioning block is provided inside the other end of the handle assembly; a third positioning block is provided inside one end of the arm assembly, and a first positioning block is provided inside the other end of the arm assembly; a through hole is provided in the middle of the fourth positioning block, the third positioning block, and the first positioning block; the other end of the mandrel passes through the through hole.

[0018] Optionally, the other end of the mandrel is provided with a through hole in the radial direction; both ends of the arm assembly are provided with through positioning holes in the radial direction; the positions of the through hole and the positioning hole are matched; the positioning screw passes through the through hole and the positioning hole; and both ends of the positioning screw are provided with nuts.

[0019] Optionally, a flange is provided in the middle of the pressure plate, an external thread is provided at the other end of the mandrel, and an internal thread is provided on the flange, with the external thread matching the internal thread.

[0020] Optionally, the other end of the mandrel is provided with an internal hexagonal hole, which is used to match an internal hexagonal wrench for connecting and disconnecting the mandrel from the positioning block.

[0021] The present invention achieves the following technical effects compared to the prior art:

[0022] 1. The mold of the present invention is detachable, and the product can be obtained directly by disassembling the mold;

[0023] 2. The mold of the present invention can be reused repeatedly and does not need to be remanufactured. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a diagram of a T-shaped core mold for the intersection of two cylinders in the prior art;

[0026] Figure 2 This is a T-shaped core mold diagram with a spherical body in the middle, as described in the prior art.

[0027] Figure 3 This is a schematic diagram of the overall structure of the detachable tee mold for fiber winding according to the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of some parts in the detachable tee mold for fiber winding of the present invention;

[0029] Figure 5 This is a cross-sectional view of the detachable tee mold for fiber winding according to the present invention.

[0030] Figure 6 This is a schematic diagram of the upper arm in the detachable tee mold for fiber winding according to the present invention.

[0031] Explanation of reference numerals in the attached diagram: 1. Left flange; 2. Left pressure plate; 3. Right arm; 4. Right pressure plate; 5. Right flange; 6. Nut; 7. First handle; 8. Upper pressure plate; 9. Upper flange; 10. Second handle; 11. Third handle; 12. Upper arm; 13. Fourth handle; 14. Left arm; 15. Lower arm; 16. Positioning screw; 17. Left spindle; 18. Second positioning block; 19. Right spindle; 21. Third positioning block; 22. Upper spindle; 24. Fourth positioning block; 25. First positioning block. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figures 3 to 6 As shown, this embodiment provides a detachable tee tube mold for fiber winding, including a handle assembly, an arm assembly, a pressure plate, a mandrel, and positioning blocks; one end of the handle assembly is connected to the middle of the arm assembly; a pressure plate is respectively provided at the other end of the handle assembly and both ends of the arm assembly; a positioning block is respectively provided inside the middle of the arm assembly, the two inner ends of the arm assembly, and the other end of the handle assembly; adjacent positioning blocks are connected by a mandrel.

[0034] Connect the bottom of the handle assembly to the middle saddle of the arm assembly, and place a positioning block inside the upper end of the handle assembly, the inner middle of the arm assembly, and the inner two ends of the arm assembly. Place a pressure plate at the upper end of the handle assembly and the two ends of the arm assembly. Connect one end of the mandrel to the positioning hole and the other end of the mandrel through the pressure plate to complete the assembly of the entire mold.

[0035] In this specific embodiment, the handle assembly includes a first handle 7, a second handle 10, a third handle 11, and a fourth handle 13; the first handle 7, the second handle 10, the third handle 11, and the fourth handle 13 are spliced ​​together to form the handle portion of the tee pipe mold.

[0036] The arm assembly includes an upper arm 12, a lower arm 15, a left arm 14, and a right arm 3; the upper arm 12, lower arm 15, left arm 14, and right arm 3 are spliced ​​together to form the wall portion of the three-way pipe mold; a cylindrical saddle extending upward is provided on the outer wall of the middle part of the upper arm 12, the diameter of which is equal to the inner diameter of the handle assembly, and the saddle is used for connection with the handle assembly.

[0037] A second positioning block 18 is provided in the inner center of the arm assembly. Threaded holes are provided on both sides and the top of the second positioning block 18. The threaded holes are used for threaded connection with one end of the mandrel.

[0038] The other end of the handle assembly is provided with a fourth positioning block 24; the arm assembly is provided with a third positioning block 21 at one end and a first positioning block 25 at the other end; the fourth positioning block 24, the third positioning block 21 and the first positioning block 25 are all provided with through holes in the middle; the other end of the spindle passes through the through hole.

[0039] The other end of the spindle has a through hole in the radial direction; both ends of the arm assembly have through positioning holes in the radial direction; the positions of the through hole and the positioning hole are matched; the positioning screw 16 passes through the through hole and the positioning hole; both ends of the positioning screw 16 are provided with nuts 6.

[0040] A flange is provided in the middle of the pressure plate, and an external thread is provided at the other end of the mandrel. An internal thread is provided on the flange, and the external thread matches the internal thread.

[0041] The other end of the mandrel is provided with an internal hexagonal hole, which is used to match an internal hexagonal wrench for connecting and disconnecting the mandrel from the positioning block.

[0042] In a more specific embodiment, the left side of the second positioning block 18 is connected to one end of the left mandrel 17, the right side of the second positioning block 18 is connected to one end of the right mandrel 19, and the top of the second positioning block 18 is connected to one end of the upper mandrel 22; the other ends of the left mandrel 17 and the right mandrel 19 are provided with through holes in the radial direction, and the outer walls of the other ends of the upper mandrel 22, the left mandrel 17, and the right mandrel 19 are provided with external threads, and the other ends of the upper mandrel 22, the left mandrel 17, and the right mandrel 19 are provided with internal hexagonal holes; the upper arm 12 and A positioning hole is provided at each end of the lower arm 15; a left pressure plate 2 is provided at the left end of the arm assembly, and a right pressure plate 4 is provided at the right end of the arm assembly. The cross-section of the left pressure plate 2 and the right pressure plate 4 is a U-shaped structure. Both the left pressure plate 2 and the right pressure plate 4 are provided with a radially penetrating connecting hole. The inner diameter of the left pressure plate 2 and the right pressure plate 4 is equal to the outer diameter of the arm assembly. A left flange is provided on the outer side of the left pressure plate 2, and a right flange 5 is provided on the outer side of the right pressure plate 4. Both the left flange and the right flange 5 are T-shaped structures. The inner wall of the axial through hole of the left flange and the right flange 5 is provided with internal threads.

[0043] In use, the upper arm 12, lower arm 15, left arm 14, and right arm 3 are assembled into a circle. The first handle 7, second handle 10, third handle 11, and fourth handle 13 are also assembled into a circle. The second positioning block 18 is placed inside the arm assembly. The left spindle 17, right spindle 19, and upper spindle 22 are threadedly connected to the second positioning block 18. The fourth positioning block 24 is placed inside the upper end of the handle assembly. The first positioning block 25 is placed inside the left end of the arm assembly. The third positioning block 21 is placed inside the right end of the arm assembly. The left pressure plate 2 is placed at the left end of the arm assembly. The right pressure plate 4 is placed at the right end of the arm assembly. The upper pressure plate 8 is placed on the handle assembly. The top of the component is secured by a positioning screw 16, which passes through the left pressure plate 2, upper arm 12, first positioning block 25, lower arm 15, and left pressure plate 2 in sequence, and is fixed with a nut 6. The positioning screw 16 then passes through the right pressure plate 4, upper arm 12, third positioning block 21, lower arm 15, and right pressure plate 4 in sequence, and is fixed with a nut 6. The left flange is threaded to the left spindle 17, the right flange 5 is threaded to the right spindle 19, and the upper flange 9 is threaded to the upper spindle 22. By tightening the left flange, right flange 5, and upper flange 9, the pressure plate is pressed down, preventing the entire structure from loosening.

[0044] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A detachable tee mold for fiber winding, characterized in that, It includes a handle assembly, an arm assembly, a pressure plate, a mandrel, and positioning blocks; one end of the handle assembly is connected to the middle of the arm assembly; a pressure plate is respectively provided at the other end of the handle assembly and both ends of the arm assembly; a positioning block is respectively provided inside the inner middle of the arm assembly, the inner two ends of the arm assembly, and the other end of the handle assembly; adjacent positioning blocks are connected by the mandrel. The handle assembly includes a first handle, a second handle, a third handle, and a fourth handle; the first handle, the second handle, the third handle, and the fourth handle are assembled to form the handle portion of the tee pipe mold; The arm assembly includes an upper arm, a lower arm, a left arm, and a right arm; the upper arm, the lower arm, the left arm, and the right arm are spliced ​​together to form the arm portion of a three-way pipe mold; a cylindrical saddle extending upward is provided on the outer wall of the middle part of the upper arm, the diameter of the saddle is equal to the inner diameter of the handle assembly, and the saddle is used for connection with the handle assembly; A second positioning block is provided in the inner center of the arm assembly. Threaded holes are provided on both sides and the top of the second positioning block. The threaded holes are used for threaded connection with one end of the mandrel. A fourth positioning block is provided inside the other end of the handle assembly; a third positioning block is provided inside one end of the arm assembly, and a first positioning block is provided inside the other end of the arm assembly; a through hole is provided in the middle of the fourth positioning block, the third positioning block, and the first positioning block; the other end of the mandrel passes through the through hole. The other end of the mandrel has a through hole in the radial direction; both ends of the arm assembly have through positioning holes in the radial direction; the through hole and the positioning hole are matched in position; the positioning screw passes through the through hole and the positioning hole; and both ends of the positioning screw are provided with nuts.

2. The detachable tee mold for fiber winding according to claim 1, characterized in that, A flange is provided in the middle of the pressure plate, and an external thread is provided at the other end of the mandrel. An internal thread is provided on the flange, and the external thread matches the internal thread.

3. The detachable tee mold for fiber winding according to claim 1, characterized in that, The other end of the mandrel is provided with an internal hexagonal hole, which is used to match an internal hexagonal wrench for connecting and disconnecting the mandrel from the positioning block.

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