Square mold for winding forming

Abstract

The utility model belongs to the technical field of composite material winding processing, and particularly relates to a square mold for winding forming. The square mold comprises a central shaft, four side plates, four corner plates and a fixing frame. The four side plates are evenly arranged on the outer side of the center shaft in the circumferential direction. The four corner plates are evenly arranged on the outer side of the center shaft in the circumferential direction, the corner plates and the side plates are distributed alternately, and a disassembly cavity is formed between every two corner plates and every two side plates. The fixing frame is sleeved outside the left ends and the right ends of the side plates and the angle plates, and the side plates, the angle plates and the fixing frame are fixedly arranged on the central shaft through fasteners. According to the utility model, the conical shaft is used as a central shaft, so that the difficulty in dismounting the central shaft is effectively reduced, and the production efficiency of winding forming is further improved. The trapezoid side plates and the arrow-shaped angle plates are combined for use, so that friction stress is prevented from being generated when the side plates, the angle plates and the thin-wall square product are separated, and the thin-wall square product is prevented from being torn and deformed due to friction.

Description

Technical Field

[0001] The utility model belongs to the technical field of composite material winding processing, and particularly relates to a square mold for winding forming. Background Technique

[0002] In the field of composite material processing, square winding products have become important production objects due to their unique structural characteristics and wide application requirements. However, in the production process of square winding products with thin walls (product thickness ≤ 2 mm) or small-sized cavities, traditional winding forming molds often fail to meet the production requirements, resulting in difficult demolding of products after winding and curing, and even serious defects such as tearing and deformation.

[0003] During the curing process of thin-walled square winding products, due to the low rigidity and strength of the material itself, they are extremely vulnerable to external factors. When traditional demolding machines demold winding products, although the demolding force used is calculated, the products are still damaged due to large frictional stresses. Especially in the external winding of square parts, due to the obvious concentration of frictional stresses at the corners, problems such as tearing or deformation are more likely to occur. Summary of the Invention

[0004] The purpose of the utility model is to solve the problem of difficult demolding of thin-walled square products formed by winding in the above-mentioned existing technology, and a square mold for winding forming is proposed. This square mold effectively solves the problem of easy tearing and deformation during the demolding of thin-walled square products, and significantly improves the production efficiency and product quality of thin-walled square products.

[0005] To achieve the above purpose, the technical solution adopted is:

[0006] A square mold for winding forming, comprising:

[0007] A central axis;

[0008] Four side plates, which are evenly arranged on the outside of the central axis along the circumferential direction;

[0009] Four corner plates, which are evenly arranged on the outside of the central axis along the circumferential direction, and the corner plates and the side plates are alternately distributed, and a disassembly cavity is formed between every two of the corner plates and the side plates;

[0010] And a fixing frame, which is sleeved on the left and right ends of the side plates and the corner plates, and the side plates, the corner plates and the fixing frame are fixedly arranged on the central axis through fasteners.

[0011] According to the square mold for winding forming of the utility model, further, the central axis is a hollow tube structure.

[0012] According to the square mold for winding forming of the present utility model, further, the central shaft is a conical shaft with a taper of 1:2000.

[0013] According to the square mold for winding forming of the present utility model, further, the cross-section of the side plate is trapezoidal, and the contact surface between the side plate and the central shaft is an arc surface.

[0014] According to the square mold for winding forming of the present utility model, further, the cross-section of the corner plate is arrow-shaped, and the contact surface between the corner plate and the central shaft is an arc surface.

[0015] According to the square mold for winding forming of the present utility model, further, the four side plates and the four corner plates are alternately arranged on the outer circumference of the central shaft, forming a total of eight disassembly cavities.

[0016] According to the square mold for winding forming of the present utility model, further, the cross-section of the fixed frame is square, and threaded holes are provided on each side of the fixed frame. A tightening bolt is used to pass through the threaded hole to lock and fix the side plate on the central shaft.

[0017] According to the square mold for winding forming of the present utility model, further, the fastener is a nut, and the nut is screwed on the external threads at both ends of the central shaft, thereby locking the side plate and the corner plate in the axial direction.

[0018] According to the square mold for winding forming of the present utility model, further, a gasket is also provided between the nut and the side plate and the corner plate.

[0019] Adopting the above technical solution, the beneficial effects obtained are:

[0020] The square mold for winding forming of the present utility model can quickly realize assembly and disassembly, improving the production efficiency of product winding forming.

[0021] The present utility model is particularly suitable for the production of thin-walled square products. The square mold uses a conical shaft as the central shaft, effectively reducing the difficulty of disassembling the central shaft, and thus improving the production efficiency of winding forming.

[0022] The combined use of trapezoidal side plates and arrow-shaped corner plates forms a disassembly cavity between adjacent side plates and corner plates. By pushing the side plates and corner plates in the disassembly cavity, the separation of the side plates and corner plates from the thin-walled square product can be achieved. This prevents the generation of friction stress between the thin-walled square product and the mold, and thus avoids the situation of tearing and deformation of the thin-walled square product, improving the product quality. Description of the Drawings

[0023] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings of the embodiments of the present utility model will be briefly introduced below. Among them, the accompanying drawings are only used to show some embodiments of the present utility model, rather than limiting all embodiments of the present utility model thereto.

[0024] Figure 1 is the front view of the square mold for winding molding according to the embodiment of the present utility model;

[0025] Figure 2 is the side view of the square mold for winding molding according to the embodiment of the present utility model;

[0026] Figure 3 is the front view of the central shaft according to the embodiment of the present utility model;

[0027] Figure 4 is the structural schematic diagram of the angle plate according to the embodiment of the present utility model;

[0028] Figure 5 is the structural schematic diagram of the side plate according to the embodiment of the present utility model.

[0029] The meanings represented by the serial numbers in the figure are as follows:

[0030] 10. Central shaft, 11. External thread, 20. Side plate, 21. Protrusion, 30. Angle plate, 31. Long side part, 32. Short side part, 40. Fixed frame, 50. Disassembly cavity, 51. Installation cavity, 60. Gasket ring, 61. Tightening bolt, 70. Nut. Detailed implementation manners

[0031] In the following, the exemplary solutions of the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings of the specific embodiments of the present utility model. Unless otherwise defined, the technical terms or scientific terms used in the present utility model should have the ordinary meanings understood by those of ordinary skill in the art.

[0032] As Figure 1 and Figure 2 shown, the square mold for winding molding in this embodiment includes a central shaft 10, four side plates 20, four angle plates 30 and a fixed frame 40. The four side plates 20 and the four angle plates 30 are evenly arranged on the outer side of the central shaft 10 along the circumferential direction, and the angle plates 30 and the side plates 20 are alternately distributed. A disassembly cavity 50 is formed between every two adjacent angle plates 30 and side plates 20, and this disassembly cavity 50 is used for the disassembly and assembly of the angle plates 30 and the side plates 20; the fixed frame 40 is sleeved on the left and right ends of the side plates 20 and the angle plates 30, and the side plates 20, the angle plates 30 and the fixed frame 40 are fixed to the central shaft 10 through fasteners.

[0033] Furthermore, the central shaft 10 is a hollow tube structure, so as to reduce the self-weight of the central shaft 10, reduce the material usage and lower the manufacturing cost.

[0034] Of course, the central shaft 10 can also adopt a solid structure to improve the strength and stiffness of the central shaft 10 itself. Whether the central shaft 10 is selected as a hollow structure or a solid structure can be determined according to the size of the mold to be prepared during actual production.

[0035] Furthermore, the central shaft 10 is a tapered shaft, including but not limited to a taper of 1:2000. By using the central shaft 10 with a certain taper, it is easier to extract the central shaft 10 from the square mold when disassembling the square mold of this embodiment.

[0036] Furthermore, as Figure 2 shown, the four side plates 20 and the four corner plates 30 together enclose a tapered installation cavity 51, and the outer dimensions of the installation cavity 51 match those of the central shaft 10 for inserting the central shaft 10.

[0037] As Figure 2 and Figure 5 shown, the cross-section of the side plate 20 is trapezoidal, and the contact surface between the side plate 20 and the central shaft 10 is an arc-shaped surface. Specifically, the arc-shaped surface of the side plate 20 fits with the central shaft 10, so the radius of this arc-shaped surface changes with the change of the radius of the central shaft 10 (tapered shaft). In addition, convex blocks 21 protrude outward from the bottoms of both sides of the trapezoidal side plate 20.

[0038] As Figure 2 and Figure 4 shown, the cross-section of the corner plate 30 is arrow-shaped, and the contact surface between the corner plate 30 and the central shaft 10 is an arc-shaped surface. Specifically, the arc-shaped surface of the corner plate 30 fits with the central shaft 10, so the radius of this arc-shaped surface changes with the change of the radius of the central shaft 10 (tapered shaft).

[0039] As Figure 2 、 Figure 4 and Figure 5 shown, the corner plate 30 includes a long side portion 31 and two short side portions 32 symmetrically arranged on both sides of the long side portion 31. The short side portion 32 of the corner plate 30 matches and contacts the convex block 21 of the side plate 20, and each pair of corner plates 30 and side plates 20 forms a disassembly cavity 50. The four side plates 20 and the four corner plates 30 are alternately arranged on the outer circumference of the central shaft 10, forming a total of eight disassembly cavities 50.

[0040] As Figure 2 shown, the longitudinal section of the fixing frame 40 is square, and threaded holes are provided on each side frame of the fixing frame 40. The side plate 20 is locked and fixed to the central shaft 10 by using a tightening bolt 61 passing through the threaded hole, thereby realizing the locking of the side plate 20 and the corner plate 30 in the radial direction.

[0041] As Figure 1 and Figure 3As shown, the fastener uses a nut 70, and the nut 70 is screwed onto the external threads 11 at both ends of the central shaft to lock the side plates 20 and the angle plates 30 in the axial direction, preventing the side plates 20 and the angle plates 30 from loosening and sliding off the central shaft 10.

[0042] As Figure 1 shown, further, a spacer ring 60 is also provided between the nut 70 and the side plates 20 and the angle plates 30. The spacer ring 60 prevents the nut 70 from directly contacting the side plates 20 and the angle plates 30, and prevents the side plates 20 and the angle plates 30 from being worn and deformed by the nut 70.

[0043] The working principle of this application is:

[0044] (1) Assembly of the square mold.

[0045] ① As Figure 1 and Figure 2 shown, place one side plate 20 and two angle plates 30 on the lower side on the workbench and clamp and fix them with a fixture; place the central shaft 10 on the above-mentioned one side plate 20 and two angle plates 30, and sequentially combine the remaining three side plates 20 and two angle plates 30 onto the central shaft 10, and also clamp and fix them with a fixture.

[0046] ② Initially adjust the relative positions of the central shaft 10, the four side plates 20 and the four angle plates 30 so that the side plates 20 and the angle plates 30 are basically in contact with the central shaft 10.

[0047] ③ Put two fixing frames 40 over the outside of the side plates 20 and the angle plates 30, and precisely adjust the relative positions of the central shaft 10, the four side plates 20 and the four angle plates 30 so that the side plates 20, the angle plates 30 are in complete and tight contact with the central shaft 10.

[0048] ④ Tighten the tightening bolts 61 on the fixing frame 40 until the side plates 20 and the angle plates 30 are completely locked. Install the spacer ring 60 and the nut 70 onto the external threads 11 at both ends of the central shaft 10 in sequence, and tighten the nut 70.

[0049] ⑤ Remove the fixture, and thus complete the assembly of the square mold. At this time, composite material winding molding can be carried out on the square mold.

[0050] (2) Demolding of the square mold.

[0051] After the thin-walled product wound on the square mold is fixedly formed, the square mold needs to be demolded.

[0052] ① As Figure 1 and Figure 2 shown, place the square mold and the thin-walled product on the workbench, and sequentially remove the nut 70, the spacer ring 60 at both ends of the central shaft 10, and the two fixing frames 40 on the outside.

[0053] ②Push the central shaft 10 in the installation cavity 51 horizontally, so that the central shaft 10 is slowly withdrawn from the end with a larger radius of the installation cavity 51.

[0054] ③Gently push each side plate 20 radially along the installation cavity 51, so that the side plate 20 slides inward gradually in the disassembly cavity 50. At the same time, the side plate 20 is separated from the square thin-walled product, and then the side plate 20 is withdrawn. Similarly, gently push each corner plate 30 radially along the installation cavity 51, so that the corner plate 30 slides inward gradually in the disassembly cavity 50. At the same time, the corner plate 30 is separated from the square thin-walled product, and then the corner plate 30 is withdrawn.

[0055] Thus, the demolding of the square mold in this embodiment is completed, and the square thin-walled product is obtained.

[0056] It should be noted that when an element is described as "connected", "coupled" or "linked" to another element, it may mean a direct connection, coupling or linkage, but it should be understood that there may be intermediate elements between the two; that is, it covers the positional relationship of both direct connection and indirect connection.

[0057] It should also be noted that the use of words such as "a" or "an" does not necessarily imply a limitation on quantity. Words such as "comprising" or "including" mean that the elements or items appearing before the word cover the elements or items listed after the word and their equivalents, without excluding other elements or items.

[0058] It should be noted that terms indicating orientation or positional relationship such as "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships. They are for the convenience of describing the present invention, rather than meaning that the device or element must have a specific orientation, be constructed and operated in a specific orientation; when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0059] The preferred embodiments for implementing the present invention have been described in detail above. However, it should be understood that the functions of these embodiments are only for illustration, rather than limiting the scope, application or construction of the present invention in any way. The protection scope of the present invention is defined by the appended claims and their equivalents. Those of ordinary skill in the art can make many changes to the foregoing embodiments under the teaching of the present invention, and these changes all fall within the protection scope of the present invention.

Claims

1. A square mold for winding molding, characterized in that, Comprising: Central axis; Four side plates, which are evenly arranged on the outer side of the central axis in the circumferential direction; Four corner plates, which are evenly arranged on the outer side of the central axis in the circumferential direction, and the corner plates and the side plates are alternately distributed, and a disassembly cavity is formed between every two of the corner plates and the side plates; And a fixing frame, which is sleeved on the left and right ends of the side plates and the corner plates, and the side plates, the corner plates and the fixing frame are fixedly arranged on the central axis through fasteners.

2. The square mold for winding molding according to claim 1, characterized in that, The central axis is a hollow tube structure.

3. The square mold for winding molding according to claim 1, characterized in that, The central axis is a conical shaft, and its taper is 1:2000.

4. The square mold for winding molding according to claim 3, wherein The cross section of the side plate is trapezoidal, and the contact surface between the side plate and the central axis is an arc surface.

5. The square mold for winding molding according to claim 4, characterized in that, The cross section of the corner plate is arrow-shaped, and the contact surface between the corner plate and the central axis is an arc surface.

6. The square mold for winding molding according to claim 5, wherein, The four side plates and the four corner plates are alternately arranged on the outer circumference of the central axis, and a total of eight disassembly cavities are formed.

7. The square mold for winding molding according to claim 1, characterized in that, The cross section of the fixing frame is square, and threaded holes are formed on each side frame of the fixing frame. A tightening bolt is used to pass through the threaded hole to lock and fix the side plate on the central axis.

8. The square mold for winding molding according to claim 1, wherein The fastener is a nut, and the nut is screwed on the external threads at both ends of the central axis, so as to lock the side plate and the corner plate in the axial direction.

9. The square mold for winding molding according to claim 8, wherein, A gasket is further arranged between the nut and the side plate and the corner plate.

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