Radome mold structure

Abstract

The utility model discloses a radome mold structure, and particularly relates to the technical field of radome mold splitting, the radome mold structure comprises a mold, a cavity is arranged in the mold, the cavity is used for positioning a cover body, a step hole is arranged at the bottom of the mold, an ejector pin is arranged in the step hole, and a sealing ring is arranged between the tail end of the ejector pin and the step hole. An air channel is further formed in the bottom of the mold, a valve is installed at the outer end of the air channel, the inner end of the air channel leads to an inner cavity of the stepped hole, and when the ejector pin moves downwards to the position away from the inner end of the air channel, the air channel communicates with the stepped hole; when the ejector pin moves upwards and resets, the ejector pin isolates the air channel from the stepped hole. Compared with an existing mold, the mold has the advantages that cavity sealing and cavity ventilation can be achieved through the ejector pin, when a product is demolded, ventilation is conducted to the cavity through the air channel and the stepped hole, negative pressure between the cover body and the mold is eliminated, the product is smoothly demolded through the air pressure effect, the demolding efficiency is improved, and the appearance structure of the product can be effectively protected.

Description

Technical Field

[0001] The utility model relates to the structure of a radome mold, in particular to the technical field of radome mold disassembly. Background Art

[0002] At present, most radomes are made of wave-transparent composite fiber materials, and molds are needed for shaping during the production process. After the product is formed, demolding and mold disassembly are required. For example, in the traditional production process of radome molds, after removing the limiting components such as the surrounding frame tooling on the mold, the radome is removed from the mold by using the screw holes on the radome or gripping the exposed edge of the radome by hand. Since the forming process is a negative pressure environment, due to the negative pressure effect between the radome and the mold, their mutual adsorption and suction force are relatively large. During the disassembly process, the radome product must be locally deformed and air must enter before the radome can be smoothly demolded. The above traditional demolding and mold disassembly methods are time-consuming and laborious, and are likely to cause deformation and damage to the radome. Therefore, how to design a new radome mold structure to solve the above technical problems has long troubled the technicians in this field. Summary of the Utility Model

[0003] In view of this, the utility model provides a radome mold structure, which can realize cavity sealing and cavity ventilation through a thimble. When the product is demolded, air is introduced into the cavity through an air passage and a stepped hole to eliminate the negative pressure between the radome and the mold, and the product is smoothly removed by the action of air pressure.

[0004] The utility model solves the above problems through the following technical means:

[0005] A radome mold structure includes a mold. A cavity is arranged inside the mold, and the cavity is used for positioning the radome. The inner side of the top of the cavity is recessed to form an annular groove, and a sealing cover is installed in the annular groove. Among them: a stepped hole is arranged at the bottom of the mold, and a thimble is installed inside the stepped hole. A sealing ring is installed between the end of the thimble and the stepped hole; an air passage is also arranged at the bottom of the mold. A valve is installed at the outer end of the air passage, and the inner end of the air passage leads to the inner cavity of the stepped hole. When the thimble moves downward to a position away from the inner end of the air passage, the air passage is communicated with the stepped hole; when the thimble moves upward to reset, the thimble isolates the air passage and the stepped hole.

[0006] Preferably, the stepped hole is composed of four through holes with different diameters. The four through holes with different diameters are respectively an upper hole, a middle hole, a lower hole and a bottom hole arranged coaxially. The inner stepped surface of the middle hole is used for installing the sealing ring.

[0007] Preferably, the thimble is composed of four cylinders with different diameters. The four cylinders with different diameters are respectively an upper cylinder, a middle cylinder, a lower cylinder and a bottom cylinder arranged coaxially. A cross-shaped notch is arranged on the outer end surface of the bottom cylinder.

[0008] Preferably, the valve is installed at the end of the air passage by means of threads, and a sealing ring is installed on the contact surface between the valve and the air passage, wherein: the valve is a one-way valve body, an air inlet hole is provided at one end of the one-way valve body, a perforated end cover is installed at the other end of the one-way valve body, a movable plug body is installed inside the one-way valve body, a spring is arranged between the movable plug body and the air inlet hole, and a plurality of ventilation holes are symmetrically arranged at the edge of the movable plug body; when the movable plug body is not subjected to external force, the movable plug body is closely attached to the perforated end cover under the elastic force of the spring, and the ventilation holes are arranged in a staggered manner with the central hole of the perforated end cover.

[0009] Preferably, the sealing cover is positioned by a plurality of positioning screws, and a positioning groove for fixing the cover body is provided at the bottom of the sealing cover.

[0010] Preferably, an internal support body is installed inside the mold, and the internal support body is a support air bag.

[0011] Preferably, the bottom of the cover body is provided with an inward flanging, and a plurality of connecting holes are uniformly arranged on the inward flanging.

[0012] A radome mold structure of the present utility model has the following beneficial effects:

[0013] Through the movable ejector pin structure, when the ejector pin is locked, the mold is a sealed cavity and the product can be produced. When the product needs to be demolded, the ejector pin is loosened downward, and the cavity is communicated with the outside through the stepped hole, the air passage and the valve. By blowing air into the inside through the air passage, the negative pressure between the cover body and the mold can be quickly eliminated, and the product can be smoothly demolded from the mold by means of air pressure. This method does not require the assistance of other tools. By using air pressure to eliminate the negative pressure between the cover body and the mold and using positive pressure to assist in demolding, it is convenient for the cover body to fall off from the mold. The air pressure can act evenly on the surface of the cover body, quickly and effectively eject the product, and play a role in protecting the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present utility model will be further described below with reference to the drawings and embodiments.

[0015] Figure 1 is a schematic diagram of the internal structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the sealing cover structure of the present utility model;

[0017] Figure 3 is a schematic diagram of the top structure of the present utility model;

[0018] Figure 4 is a schematic diagram of the bottom structure of the present utility model;

[0019] Figure 5 is a schematic diagram of the ejector pin structure of the present utility model;

[0020] Figure 6 This is a schematic diagram of the one-way valve body structure of the present utility model.

[0021] In the figure, 1 - mold, 101 - cavity, 102 - annular groove, 103 - sealing cover, 104 - positioning screw, 105 - positioning groove, 106 - inner support body, 2 - cover body, 201 - inner flanging, 202 - connection hole, 3 - stepped hole, 301 - upper hole, 302 - middle hole, 303 - lower hole, 304 - bottom hole, 4 - ejector pin, 401 - upper cylinder, 402 - middle cylinder, 403 - lower cylinder, 404 - bottom cylinder, 405 - single-notch, 5 - first sealing ring, 6 - air passage, 601 - valve, 602 - second sealing ring, 603 - one-way valve body, 604 - air inlet hole, 605 - perforated end cover, 606 - movable plug body, 607 - spring, 608 - ventilation hole. Specific embodiments

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0023] The present utility model will be described in detail below with reference to the accompanying drawings.

[0024] As Figures 1 to 6As shown in the figure, the radome mold structure includes a mold 1. Inside the mold 1, there is a cavity 101 for positioning the cover 2. The inner side of the top of the cavity 101 is recessed to form an annular groove 102. A sealing cover 103 is installed in the annular groove 102. The sealing cover 103 is a detachable structure and is positioned by a plurality of positioning screws 104. At the bottom of the sealing cover 103, there is a positioning groove 105 for fixing the cover 2, and the positioning groove 105 is an annular groove. An inner support body 106 is installed inside the mold 1. The inner support body 106 is a support airbag. After the support airbag is inflated, it can effectively support the inside of the cover 2. The inner support body 106 can also be other existing structures and materials. At the bottom of the cover 2, there is an inward flange 201, and a plurality of connecting holes 202 are evenly arranged on the inward flange 201. The inward flange 201 and the connecting holes 202 facilitate the installation and positioning of the cover 2.

[0025] In the figure, a stepped hole 3 is provided at the bottom of the mold 1. A thimble 4 is installed inside the stepped hole 3, and a first sealing ring 5 is installed between the end of the thimble 4 and the stepped hole 3. An air passage 6 is also provided at the bottom of the mold 1. A valve 601 is installed at the outer end of the air passage 6. The inner end of the air passage 6 leads to the inner cavity of the stepped hole 3. When the thimble 4 moves downward to a position away from the inner end of the air passage 6, the air passage 6 communicates with the stepped hole 3. When the thimble 4 moves upward to reset, the thimble 4 isolates the air passage 6 and the stepped hole 3.

[0026] Specifically, the stepped hole 3 is composed of four through holes with different diameters. The four through holes with different diameters are respectively the upper hole 301, the middle hole 302, the lower hole 303 and the bottom hole 304 arranged coaxially. The inner stepped surface of the middle hole 302 is used to install the first sealing ring 5. The thimble 4 is composed of four cylinders with different diameters. The four cylinders with different diameters are respectively the upper cylinder 401, the middle cylinder 402, the lower cylinder 403 and the bottom cylinder 404 arranged coaxially. A cross slot 405 is provided on the outer end surface of the bottom cylinder 404. Among them: the sizes of the four through holes are the same as those of the four cylinders, and the outer surface of the cylinder and the inner surface of the through hole can be tapped, and they are connected by threads.

[0027] During actual operation, this structure has a movable thimble structure. When the thimble is locked, the mold is a sealed cavity and the product can be produced. When the product needs to be demolded, the thimble is loosened downward. The cavity communicates with the outside through the stepped hole, the air passage and the valve. By blowing air into the inside through the air passage, the negative pressure between the cover and the mold can be quickly eliminated, and the product can be smoothly demolded from the mold by means of air pressure. This method does not require other tools. By using air pressure to eliminate the negative pressure between the cover and the mold and using positive pressure to assist in demolding, it is convenient for the cover to fall off from the mold. The air pressure can act evenly on the surface of the cover, quickly and effectively eject the product, and play a role in protecting the product.

[0028] In the figure, the valve 601 is installed at the end of the air passage 6 by means of threads. A second sealing ring 602 is installed on the contact surface between the valve 601 and the air passage 6. Among them: the valve 601 is a one-way valve body 603. An air inlet hole 604 is provided at one end of the one-way valve body 603. A perforated end cover 605 is installed at the other end of the one-way valve body 603. A movable plug body 606 is installed inside the one-way valve body 603. A spring 607 is arranged between the movable plug body 606 and the air inlet hole 604. A plurality of ventilation holes 608 are symmetrically arranged at the edge of the movable plug body 606.

[0029] During actual operation, the one-way valve body 603 is installed at the end of the air passage 6 by means of threads. When the movable plug body 606 is not subjected to external force, the movable plug body 606 is closely attached to the perforated end cover 605 under the elastic force of the spring 607. Since the ventilation holes 608 and the middle hole of the perforated end cover 605 are arranged in a staggered manner, at this time, the inside of the one-way valve body 603 is sealed and cannot ventilate. When high-pressure gas is introduced into the perforated end cover 605, the high-pressure gas acts on the surface of the movable plug body 606 through the middle hole of the perforated end cover 605. When the thrust generated by the high-pressure gas is greater than the thrust of the spring 607, the movable plug body 606 starts to move backward. The high-pressure gas enters the air passage through the ventilation holes 608 and the air inlet hole 604, and then enters the inside of the cavity 101, so as to quickly eliminate the negative pressure between the cover body and the mold. After the high-pressure gas stops, the movable plug body 606 resets under the elastic force of the spring 607 and is closely attached to the perforated end cover 605.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A radome mold structure, characterized in that: The invention comprises a mold (1), wherein a mold cavity (101) is arranged inside the mold (1), the mold cavity (101) is used to position a cover body (2), the inner side of the top of the mold cavity (101) is concave to form an annular groove (102), and a sealing cover (103) is installed in the annular groove (102), wherein: The bottom of the mold (1) is provided with a stepped hole (3), an ejector pin (4) is installed inside the stepped hole (3), and a first sealing ring (5) is installed between the end of the ejector pin (4) and the stepped hole (3); The bottom of the mold (1) is also provided with an air channel (6), the outer end of which is provided with a valve (601), the inner end of which leads to the inner cavity of the step hole (3), and when the ejector pin (4) moves downward to a position away from the inner end of the air channel (6), the air channel (6) is connected to the step hole (3); when the ejector pin (4) moves upward to reset, the ejector pin (4) isolates the air channel (6) from the step hole (3).

2. The antenna cover mold structure according to claim 1, characterized in that: The step hole (3) is composed of four through holes of different diameters, wherein the four through holes of different diameters are respectively an upper hole (301), a middle hole (302), a lower hole (303) and a bottom hole (304) arranged coaxially, and the inner step surface of the middle hole (302) is used for mounting a first sealing ring (5).

3. The radome mold structure according to claim 1, characterized in that: The ejector pin (4) is composed of four sections of cylinders with different diameters, wherein the four sections of cylinders with different diameters are respectively an upper cylinder (401), a middle cylinder (402), a lower cylinder (403) and a bottom cylinder (404) arranged coaxially, and a notch (405) is provided on the outer end surface of the bottom cylinder (404).

4. The antenna cover mold structure according to claim 1, characterized in that: The valve (601) is installed at the end of the airway (6) by means of threads, and a second sealing ring (602) is installed on the contact surface between the valve (601) and the airway (6), wherein: The valve (601) is a one-way valve body (603), one end of the one-way valve body (603) is provided with an air inlet hole (604), the other end of the one-way valve body (603) is installed with an end cover with a hole (605), a movable plug body (606) is installed inside the one-way valve body (603), a spring (607) is provided between the movable plug body (606) and the air inlet hole (604), and a plurality of air vents (608) are symmetrically provided at the edge of the movable plug body (606); When the movable plug body (606) is not subjected to external force, the movable plug body (606) is tightly attached to the perforated end cover (605) under the elastic force of the spring (607), and the vent hole (608) is arranged in a staggered manner with the middle hole of the perforated end cover (605).

5. The radome mold structure according to claim 1, characterized in that: The sealing cover (103) is positioned by a plurality of positioning screws (104), and a positioning groove (105) for fixing the cover body (2) is provided at the bottom of the sealing cover (103).

6. The radome mold structure according to claim 1, characterized in that: An internal support body (106) is installed inside the mold (1), and the internal support body (106) is a support air bag.

7. The radome mold structure according to claim 1, characterized in that: The bottom of the cover body (2) is provided with an inner turn-down edge (201), and a plurality of connection holes (202) are evenly arranged on the inner turn-down edge (201).

Images