A sealing cover wet-molding device and a preparation process

Abstract

The application relates to the technical field of wet mould pressing and discloses a sealing cover wet mould pressing forming device and a preparation process, wherein the sealing cover wet mould pressing forming device comprises positioning clamping grooves, a stretching frame mechanism and a pressing butt joint mechanism; the positioning clamping grooves are provided in multiple numbers and are arranged on a mould base; the stretching frame mechanism is detachably connected with a lower mould; the stretching frame mechanism is used for stretching and fixing a fiber cloth; the pressing butt joint mechanism is detachably connected with the positioning clamping grooves; the pressing butt joint mechanism is detachably connected with the stretching frame mechanism; the pressing butt joint mechanism is used for butt joining the stretching frame mechanism and the lower mould; and the above technical scheme is used for solving the problem that the fiber cloth is prone to being wrinkled near a protruding position when a mould with a protrusion is pressed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wet compression molding, in particular to a sealing cover wet compression molding device and preparation process. BACKGROUND

[0002] The most important feature of the wet compression molding process is that dry fiber cloth is used for cutting in the early stage, and then resin is sprayed / painted before being placed in the mold for forming and curing. This also makes the process more suitable for processing products with low complexity, and is widely used in various industries. Its advantages are fast production rhythm, simple mold design, low single-piece cost, workers place the cut fiber cloth in the mold, then spray resin through automatic equipment, and wait for the resin to be evenly laid on the fiber cloth. The upper part of the mold is pressed and heated by the hydraulic device.

[0003] When the product is made into a flat configuration, the inside of the mold is also a horizontal plane, and the fiber cloth can be placed flat in the mold. However, when a mold with protrusions and relatively complex configurations is needed, such as a sealing cover, it is inevitable that the fiber cloth will wrinkle near the protrusions after being placed in the mold and pressed. This results in different thicknesses of the formed product at different positions, and the positions with different thicknesses are also prone to trapping air bubbles during resin flow, resulting in substandard quality of the pressed product. SUMMARY

[0004] The present application proposes a sealing cover wet compression molding device and preparation process to solve the problem of fiber cloth wrinkling near protrusions when a mold with protrusions is pressed.

[0005] The technical solution of the present application is as follows:

[0006] A sealing cover wet compression molding device, comprising a mold base and a mold top, the mold base and the mold base are respectively fixedly installed on the bottom and top of a hydraulic device, a lower mold is arranged on the mold base, an upper mold is arranged on the mold top, the lower mold and the upper mold are matched, further comprising a positioning slot, a stretching frame mechanism and a pressing docking mechanism, the positioning slot is provided with a plurality of positioning slots, the positioning slots are arranged on the mold base, the stretching frame mechanism is detachably connected with the lower mold, the stretching frame mechanism is used for stretching and fixing the fiber cloth, the pressing docking mechanism is detachably connected with the positioning slot, the pressing docking mechanism is detachably connected with the stretching frame mechanism, and the pressing docking mechanism is used for docking the stretching frame mechanism with the lower mold.

[0007] The stretching frame mechanism comprises a lower frame and an upper frame, the lower frame is detachably connected with the lower mold or the pressing docking mechanism, the upper frame is detachably connected with the lower mold or the pressing docking mechanism, the lower frame is detachably connected with the upper frame, and the fiber cloth is arranged between the upper frame and the lower frame when the upper frame and the lower frame are docked.

[0008] A plurality of docking columns are arranged on the upper frame, a plurality of docking holes are arranged on the lower frame, the docking columns and the docking holes correspond one by one, and the docking columns penetrate the fiber cloth and dock with the docking holes.

[0009] A plurality of clamping rings are arranged in the docking holes, and the clamping slots are detachably connected with the clamping rings.

[0010] The inner ring of the upper frame is fixedly connected with a separation knife on one side close to the lower frame, and when the clamping slots are docked with the clamping rings close to the upper frame, a gap is left between the separation knife and the lower frame.

[0011] The pressing docking mechanism comprises a frame body, a sliding installation frame and a pushing frame, a plurality of positioning supports are fixedly connected on the frame body, the positioning supports are detachably connected with the positioning clamping slots, the sliding installation frame is fixedly connected on the frame body, the sliding installation frame can be in contact with the lower mold, the sliding installation frame cooperates with the lower mold, the stretching frame mechanism can be detachably connected with the sliding installation frame when the upper frame and the lower frame are docked, and the pushing frame is slidingly arranged in the sliding installation frame.

[0012] When the pushing frame presses the upper frame into the lower mold, a gap exists between the separation knife and the lower frame.

[0013] The upper mold is provided with a pressing groove corresponding to the upper frame, the pressing groove and the lower mold press the upper frame and the lower frame when the upper mold and the lower mold press the fiber cloth, the clamping slots are docked with the clamping rings away from the upper frame at this time, and the separation knife is in contact with the lower frame.

[0014] Before the pressing mold, the upper mold, the lower mold, the upper frame and the lower frame all need to be sprayed with a release agent.

[0015] A sealing cover wet molding forming process using the sealing cover wet molding forming device, comprising the following steps:

[0016] Step one, spray release agent: spray release agent on the upper frame, the lower frame, the upper mold and the lower mold;

[0017] Step two, fiber cloth installation: after the fiber cloth is penetrated through the butt joint column on the upper frame, it is inserted into the butt joint hole, and the clamping groove is butt jointed with the clamping ring;

[0018] Step three, frame butt joint: the upper frame and the lower frame are arranged in the sliding installation frame, and the positioning support is butt jointed with the positioning clamping groove;

[0019] Step four, fiber cloth placement: the upper frame and the lower frame are pushed into the lower mold by pressing the push-in frame, so that the lower frame is attached to the lower mold;

[0020] Step five, resin spraying: the automatic device sprays resin on the fiber cloth;

[0021] Step six, mold forming: the mold top seat is driven downward by the hydraulic device, so that the upper mold is butt jointed with the lower mold, the pressing groove presses the upper frame, the upper frame moves towards the lower frame, and the separation knife contacts the lower frame.

[0022] The working principle and beneficial effects of the present application are as follows:

[0023] 1、In the present application, the upper frame and the lower frame are arranged to clamp the fiber cloth, so that the edge of the fiber cloth is prevented from moving during the mold pressing, and the separation knife can separate the edge and the central part of the molded product, so that the edge does not affect the molding of the central part;

[0024] 2、In the present application, the stretching frame mechanism is arranged to stretch the fiber cloth, so that the edge of the fiber cloth is prevented from being stretched and wrinkled during the mold pressing, and the pressing butt joint mechanism is arranged to conveniently install the stretching frame mechanism on the lower mold. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be further described in detail below with reference to the drawings and specific embodiments.

[0026] Figure 1 It is a schematic diagram of the overall structure in the present application;

[0027] Figure 2 It is a schematic diagram of the separation structure of the mold base and the mold top seat in the present application;

[0028] Figure 3 It is a schematic diagram of the separation structure of the mold base and the mold top seat in the present application from another perspective;

[0029] Figure 4 Structure diagram of the upper frame and the lower frame separated in the present application;

[0030] Figure 5 Structure diagram of the upper frame and the lower frame separated in the present application;

[0031] Figure 6 Structure diagram of the upper frame and the lower frame separated in the present application;

[0032] Figure 7 Structure diagram of the upper frame and the lower frame separated in the present application;

[0033] In the figure: 1, mold base; 2, mold top; 3, lower mold; 4, upper mold; 5, positioning slot; 6, lower frame; 7, upper frame; 8, docking column; 9, docking hole; 10, clamping groove; 11, clamping ring; 12, separation knife; 13, frame body; 14, positioning support; 15, sliding installation frame; 16, push-in frame; 17, pressing groove. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor also fall within the scope of protection of the present application.

[0035] Embodiment one

[0036] As Figures 1 to 7As shown, the present embodiment provides a sealing cover wet molding device, which comprises a mold base 1 and a mold top 2, the mold base 1 and the mold base 1 are respectively fixedly installed on the bottom and top of the hydraulic device, the mold base 1 is provided with a lower mold 3, the mold top 2 is provided with an upper mold 4, the lower mold 3 and the upper mold 4 are matched, and the sealing cover wet molding device further comprises a positioning clamping groove 5, a stretching frame mechanism and a pressing butt joint mechanism, the positioning clamping groove 5 is provided with a plurality of positioning clamping grooves 5, the plurality of positioning clamping grooves 5 are opened on the mold base 1, the stretching frame mechanism is detachably connected with the lower mold 3, the stretching frame mechanism is used for stretching and fixing the fiber cloth, the pressing butt joint mechanism is detachably connected with the positioning clamping groove 5, the pressing butt joint mechanism is detachably connected with the stretching frame mechanism, and the pressing butt joint mechanism is used for butt joint of the stretching frame mechanism and the lower mold 3. When the sealing cover is wet molded, the fiber cloth is stretched to a relatively tight state by the stretching frame mechanism, and the fiber cloth is installed in the lower mold 3 by the pressing butt joint mechanism. The stretching frame mechanism is fixed in the lower mold 3 through the close contact of the lower mold 3 and the stretching frame mechanism. Then, the fiber cloth is separated by the pressing of the stretching frame mechanism during the molding, so that the fiber cloth between the upper frame 7 and the lower frame 6 and the fiber cloth in the center of the mold remain connected when the fiber cloth and the resin are cured.

[0037] As shown, Figures 2 to 5 The stretching frame mechanism comprises a lower frame 6 and an upper frame 7, the lower frame 6 is detachably connected with the lower mold 3 or the pressing butt joint mechanism, the upper frame 7 is detachably connected with the lower mold 3 or the pressing butt joint mechanism, and the lower frame 6 is detachably connected with the upper frame 7. When the upper frame 7 and the upper frame 7 are connected, the fiber cloth is arranged between the upper frame 7 and the lower frame 6, the upper frame 7 and the lower frame 6 form a structure similar to a photo frame, the fiber cloth is fixed, the fiber cloth is stretched and fixed around, and the fiber cloth remains flat. When the lower frame 6 and the upper frame 7 are connected with the lower mold 3, the protrusion on the mold can support the fiber cloth, and the stretching of the edge can avoid wrinkles of the fiber cloth.

[0038] As shown, Figures 2 to 5As shown, a plurality of docking columns 8 are arranged on the upper frame 7, and a plurality of docking holes 9 are arranged on the lower frame 6, the docking columns 8 and the docking holes 9 correspond one by one, the docking columns 8 penetrate the fiber cloth and dock with the docking holes 9, the docking columns 8 are provided with clamping grooves 10 on the side away from the upper frame 7, a plurality of clamping rings 11 are arranged in the docking holes 9, the clamping grooves 10 are detachably connected with the clamping rings 11, and the inner circle of the upper frame 7 is fixedly connected with a separation knife 12 on the side close to the lower frame 6. When the clamping groove 10 is docked with the clamping ring 11 close to the upper frame 7, a gap is left between the separation knife 12 and the lower frame 6. When the upper frame 7 and the lower frame 6 are docked, the clamping groove 10 is docked with the clamping ring 11 close to the upper frame 7, so that the separation knife 12 and the fiber cloth are not pressed too tightly. When the pressing groove 17 presses the upper frame 7, the docking column 8 can slide in the docking hole 9, and is docked with the clamping ring 11 closer to the lower mold 3, so that the separation knife 12 presses the fiber cloth more tightly. The separation knife 12 does not cut the fiber cloth, and part of the resin will flow between the upper frame 7 and the lower frame 6, and is separated by the separation knife 12, so that the subsequent separation of the partially cured resin and the fiber cloth between the upper frame 7 and the lower frame 6 is more convenient, and the central part of the obtained stretching frame mechanism is a finished product.

[0039] As Figures 6 to 7As shown, the pressing docking mechanism comprises a frame body 13, a sliding installation frame 15 and a push-in frame 16. The frame body 13 is fixedly connected with a plurality of positioning supports 14, which are detachably connected with the positioning clamping grooves 5. The sliding installation frame 15 is fixedly connected with the frame body 13 and can contact the lower mold 3. The sliding installation frame 15 is matched with the lower mold 3. When the upper frame 7 is docked with the lower frame 6, the stretching frame mechanism can be detachably connected with the sliding installation frame 15. The push-in frame 16 is slidingly arranged in the sliding installation frame 15 and is fixedly connected with a plurality of springs between the sliding installation frame 15. Pressing the push-in frame 16 can press the upper frame 7 and the lower frame 6 into the lower mold 3. The edges of the upper frame 7, the lower frame 6 and the lower mold 3 are tightly attached. The stretching frame mechanism can be fixed by clamping. Therefore, in order to facilitate the stretching frame mechanism to be placed in the lower mold 3 more accurately, the pressing docking mechanism is arranged. The positioning supports 14 are docked with the mold base 1 through the positioning clamping grooves 5. After the sliding installation frame 15 is aligned with the lower mold 3, the push-in frame 16 is pressed to keep the stretching frame mechanism in a relative horizontal state and is pushed into the lower mold 3. At the same time, it does not directly contact the fiber cloth arranged between the upper frame 7 and the lower frame 6, which can also reduce the generation of wrinkles. After the stretching frame mechanism is sent into the lower mold 3, the protrusions on the lower mold 3 lift the fiber cloth. Then the resin is sprayed, and then the mold is pressed. The stretching frame mechanism stretches the fiber cloth, which can make the fiber cloth stretch by its own elasticity on the protrusions of the mold. When the protrusions in the mold for sealing the cover are relatively high, a larger area of fiber cloth can be arranged between the upper frame 7 and the lower frame 6 on the stretching frame mechanism. Wrinkles can be avoided when the fiber cloth is pressed irregularly during the pressing of the mold.

[0040] As shown in the drawings, Figures 6 to 7 When the push-in frame 16 presses the upper frame 7 into the lower mold 3, there is a gap between the separating knife 12 and the lower frame 6. The upper mold 4 is provided with a pressing groove 17 corresponding to the upper frame 7. When the upper mold 4 and the lower mold 3 press the fiber cloth, the pressing groove 17 and the lower mold 3 press the upper frame 7 and the lower frame 6. At this time, the clamping groove 10 is docked with the clamping ring 11 away from the upper frame 7, and the separating knife 12 is in contact with the lower frame 6. Through the separating knife 12, the finished product formed by the resin and the fiber sheet is separated. After separating the upper frame 7 and the lower frame 6, the position separated by the separating knife 12 is cut off to obtain the finished product.

[0041] Before pressing the mold, the upper mold 4, the lower mold 3, the upper frame 7 and the lower frame 6 need to be sprayed with a release agent. The release agent can facilitate the separation of the upper frame 7 and the lower frame 6.

[0042] In the embodiment, the upper frame 7 and the lower frame 6 are arranged to form a photo frame structure, so that the fiber cloth is stretched and flattened, and the fiber cloth on the protruding part of the mold is prevented from being stretched and wrinkled when the mold is pressed. Meanwhile, the upper frame 7 and the lower frame 6 are arranged to separate the edges of the fiber cloth, so that the edge part can be removed after the mold is pressed. In addition, when the structure is complex, the fiber cloth with a large area can be arranged in the inner circle of the upper frame 7 and the lower frame 6, so that the fiber cloth has more area for forming after being contacted with the protruding part.

[0043] Embodiment two

[0044] A sealing cover wet molding forming process, using the sealing cover wet molding forming device, comprises the following steps:

[0045] Step one, spraying release agent: spraying release agent on the upper frame 7, the lower frame 6, the upper mold 4 and the lower mold 3;

[0046] Step two, fiber cloth installation: after the butt joint column 8 of the upper frame 7 penetrates the fiber cloth, the butt joint hole 9 is inserted, and the clamping groove 10 is butt jointed with the clamping ring 11;

[0047] Step three, frame body 13 butt joint: the upper frame 7 and the lower frame 6 are arranged in the sliding installation frame 15, and the positioning support 14 is butt jointed with the positioning clamping groove 5;

[0048] Step four, fiber cloth placement: the upper frame 7 and the lower frame 6 are pushed into the lower mold 3 by the pressing push-in frame 16, so that the lower frame 6 is attached to the lower mold 3;

[0049] Step five, spraying resin: the automatic device sprays resin on the fiber cloth;

[0050] Step six, mold forming: the hydraulic device drives the mold top seat 2 to move downward, so that the upper mold 4 is butt jointed with the lower mold 3, the pressing groove 17 presses the upper frame 7, the upper frame 7 moves downward to the lower frame 6, and the separation knife 12 is contacted with the lower frame 6.

[0051] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A sealing cap wet molding device, comprising a mold base (1) and a mold top (2), the mold base (1) and the mold base (1) are respectively fixedly installed on the bottom and top of a hydraulic device, a lower mold (3) is arranged on the mold base (1), an upper mold (4) is arranged on the mold top (2), and the lower mold (3) and the upper mold (4) are matched, characterized in that, Also include: Positioning card slot (5), provided with a plurality of, a plurality of said positioning card slot (5) is opened in the mold base (1) on; Stretching frame mechanism, with the lower mold (3) can be detached connection, the stretching frame mechanism for the fiber cloth to stretch fixed; Pressing butt joint mechanism, with the positioning card slot (5) can be detached connection, the pressing butt joint mechanism with the stretching frame mechanism can be detached connection, the pressing butt joint mechanism for the stretching frame mechanism and the lower mold (3) butt joint; The stretching frame mechanism includes: Lower frame (6), with the lower mold (3) or the pressing butt joint mechanism can be detached connection; Upper frame (7), with the lower mold (3) or the pressing butt joint mechanism can be detached connection, the lower frame (6) and the upper frame (7) can be detached connection, when the upper frame (7) and the upper frame (7) relative interface, fiber cloth is arranged between the upper frame (7) and the lower frame (6); The pressing butt joint mechanism includes: Frame body (13), a plurality of positioning support (14) are fixedly connected on the upper side of the frame body (13), the positioning support (14) and the positioning card slot (5) can be detached connection; Sliding installation frame (15), fixedly connected on the frame body (13), the sliding installation frame (15) can be in contact with the lower mold (3), the sliding installation frame (15) and the lower mold (3) are matched, when the upper frame (7) and the lower frame (6) relative interface, the stretching frame mechanism can be detachably connected with the sliding installation frame (15); Push frame (16), slidingly arranged in the sliding installation frame (15), a plurality of springs are fixedly connected between the push frame (16) and the sliding installation frame (15), pressing the push frame (16) can press the upper frame (7) and the lower frame (6) into the lower mold (3).

2. The sealing cap wet-mold forming apparatus according to claim 1, wherein A plurality of butt joint columns (8) are arranged on the upper frame (7), a plurality of butt joint holes (9) are arranged on the lower frame (6), the butt joint column (8) and the butt joint hole (9) correspond one by one, the butt joint column (8) penetrates the fiber cloth and the butt joint hole (9) butt joint.

3. A wet-mold forming apparatus for a sealing cap according to claim 2, wherein A clamping groove (10) is arranged on the side of the butt joint column (8) away from the upper frame (7), a plurality of clamping rings (11) are arranged in the butt joint hole (9), the clamping groove (10) and the clamping ring (11) can be detachably connected.

4. The sealing cap wet-mold forming apparatus according to claim 3, wherein A separation knife (12) is fixedly connected on the side of the inner ring of the upper frame (7) close to the lower frame (6), when the clamping groove (10) and the clamping ring (11) close to the clamping ring (11) of the upper frame (7) relative interface, the separation knife (12) and the lower frame (6) leave a gap.

5. A wet-mold forming apparatus for a sealing cap according to claim 4, wherein When the push frame (16) presses the upper frame (7) into the lower mold (3), the separation knife (12) and the lower frame (6) exist gap.

6. A wet-mold forming apparatus for a sealing cap according to claim 5, wherein The upper mold (4) is provided with a pressing groove (17) corresponding to the upper frame (7), when the upper mold (4) and the lower mold (3) press the fiber cloth, the pressing groove (17) and the lower mold (3) press the upper frame (7) and the lower frame (6), at this time, the clamping groove (10) is opposite to the clamping ring (11) away from the upper frame (7), and the separation knife (12) is in contact with the lower frame (6).

7. A wet-mold forming apparatus for a sealing cap according to claim 6, wherein Before pressing, the upper mold (4), the lower mold (3), the upper frame (7) and the lower frame (6) need to be sprayed with release agent.

8. A process for the wet-mold forming of a sealing cap, using a sealing cap wet-mold forming device according to claim 7, characterized in that, The method comprises the following steps: S1, spraying release agent: spraying release agent on the upper frame (7), the lower frame (6), the upper mold (4) and the lower mold (3); S2, fiber cloth installation: after the butt joint column (8) on the upper frame (7) penetrates the fiber cloth, it is inserted into the butt joint hole (9), and the clamping groove (10) is opposite to the clamping ring (11); S3, frame (13) butt joint: the upper frame (7) and the lower frame (6) are arranged in the sliding installation frame (15), and the positioning support (14) is opposite to the positioning clamping groove (5); S4, fiber cloth placement: press the push-in frame (16), push the upper frame (7) and the lower frame (6) into the lower mold (3), so that the lower frame (6) is attached to the lower mold (3), and the frame (13) is removed; S5, spraying resin: the automatic device sprays resin on the fiber cloth; S6, pressing forming: the hydraulic device drives the mold top seat (2) to move downward, so that the upper mold (4) is opposite to the lower mold (3), the pressing groove (17) presses the upper frame (7), the upper frame (7) moves to the lower frame (6), and the separation knife (12) is in contact with the lower frame (6).

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