Pre-vacuumizing jig structure

Abstract

The utility model discloses a pre-vacuumizing jig structure which comprises a base, an upper cover, a vacuum bag, a sealing structure and a pre-vacuumizing mechanism. The base is provided with an accommodating cavity with an open upper end; the upper cover is arranged on the base in an opening and closing mode to seal the containing cavity. The vacuum bag is arranged on the upper cover and located on the upper side of the containing cavity. The sealing structure is arranged between the upper cover and the base; the base is provided with an extraction opening, the pre-extraction mechanism comprises a vacuumizing device, the vacuumizing device is provided with an extraction pipe, and the extraction pipe is connected to the extraction opening; thus, through the design of all the parts, the workpiece is placed in the containing cavity, vacuumizing operation is conducted through the pre-vacuumizing mechanism, and therefore the pre-shaping process of the workpiece and carbon fibers is achieved, the pre-shaped workpiece is taken out by opening the upper cover, the traditional mode that a vacuum bag is separated from the workpiece in a manual mode is omitted, the pre-vacuumizing shaping efficiency of the workpiece is improved, and the production cost is reduced. The vacuum bag is ingenious and reasonable in structural design, the integrity of the vacuum bag is guaranteed, repeated use of the vacuum bag is facilitated, the use requirements of users are met, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to vacuum pumping technology, in particular to a pre-vacuum pumping fixture structure. Background Art

[0002] With the progress of science and technology, high-strength and high-modulus fibers with a carbon content of more than 90% are the most resistant to high temperatures among all chemical fibers. They are made of acrylic and viscose fibers and are oxidized and carbonized at high temperatures. They are excellent materials for manufacturing technical equipment. Carbon fibers can be processed into fabrics, felts, mats, belts, paper and other materials. In traditional use, carbon fibers are generally not used alone except as thermal insulation materials. The carbon fibers are mostly added as reinforcing materials to resins, metals, ceramics, concrete and other materials to form composite materials. The carbon fiber reinforced composite materials can be used as aircraft structural materials, electromagnetic shielding and static removal materials, artificial ligaments and other body substitute materials, as well as for manufacturing shells, motor boats, industrial robots, automobile leaf springs and drive shafts.

[0003] In the existing production process of carbon fiber and workpiece, the carbon fiber is covered on the surface of the workpiece, and then the entire workpiece and carbon fiber are wrapped in a vacuum bag, and the vacuum bag is evacuated by a vacuum mechanism so that the inner wall of the vacuum bag is in close contact with the carbon fiber during vacuuming, so as to realize the pre-vacuuming process of the workpiece and the carbon fiber, and then the carbon fiber is pre-shaped on the workpiece, and then the workpiece is taken out of the vacuum bag to enter the next process; however, its structural design is not good, and the vacuum bag usually adopts a manual method to remove the pre-shaped workpiece in the vacuum bag, which makes it easy to damage the vacuum bag and cause breakage when the pre-shaped workpiece is removed manually from the vacuum bag, resulting in the vacuum bag being unable to be reused, cumbersome to operate, inconvenient to use, low efficiency of pre-evacuation and shaping of the workpiece, unable to meet the user's use needs, and small scope of application.

[0004] Therefore, it is necessary to study a new technical solution to solve the above problems. Utility Model Content

[0005] In view of this, the utility model aims to solve the deficiencies in the prior art, and its main purpose is to provide a pre-vacuum fixture structure. Through the design of various components, the workpiece is placed in the accommodating cavity and a vacuum operation is performed using a pre-vacuum mechanism, thereby realizing the pre-forming process of the workpiece and carbon fiber, and opening the upper cover to take out the pre-formed workpiece, eliminating the traditional manual method of separating the vacuum bag from the workpiece, thereby improving the efficiency of pre-vacuuming and shaping of the workpiece, ensuring the integrity of the vacuum bag, and having a wide range of applications.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A pre-vacuum fixture structure comprises a base, an upper cover, a vacuum bag, a sealing structure and a pre-vacuum mechanism; wherein: the base has a accommodating cavity with an open upper end; the upper cover can be opened and closed at the upper end of the base to close the accommodating cavity; the vacuum bag is arranged on the upper cover and is located on the upper side of the accommodating cavity; the sealing structure is arranged between the upper cover and the base; an air suction port connected to the accommodating cavity is arranged on the outer side of the base, and the pre-vacuum mechanism comprises a vacuum device, the vacuum device has an air suction pipe, and the air suction pipe is connected to the air suction port.

[0008] As a preferred solution, the sealing structure includes a sealing strip, which is annularly extended along the outer periphery of the upper open end of the base, and the sealing strip is arranged at the upper end of the base.

[0009] As a preferred embodiment, a first mounting groove is provided at the upper end of the base, and the first mounting groove is extended in an annular shape around the outer periphery of the upper end opening. The sealing strip is provided on the first mounting groove, and the upper end of the sealing strip is exposed outside the first mounting groove. A positioning groove is provided at the lower end of the upper cover corresponding to the sealing strip. When the upper cover is covered on the base, the upper end of the sealing strip contacts the inner wall of the positioning groove.

[0010] As a preferred solution, the upper cover is arranged on the base through a hinge assembly, the hinge assembly is arranged at the rear end of the upper cover and the base, and the air exhaust port is located on the side of the hinge assembly.

[0011] As a preferred embodiment, the upper cover includes a cover body and a cover plate, the cover body is provided with a second mounting groove for installing and positioning the vacuum bag, the cover plate is detachably arranged at the upper end of the cover body and closes the second mounting groove, and the lower end of the second mounting groove passes through the cover body to form an opening.

[0012] As a preferred solution, a rubber pad is provided on the vacuum bag. There are two rubber pads, both of which are ring-shaped. The rubber pads are arranged in a ring shape around the edge of the vacuum bag. The two rubber pads are respectively arranged at the upper end and the lower end of the vacuum bag and are respectively in contact with the cover plate and the second mounting groove.

[0013] As a preferred solution, a handle is provided at the front end of the upper cover.

[0014] As a preferred solution, an auxiliary component is arranged on the outer side between the upper cover and the base, and the auxiliary component includes a mounting frame and a hydraulic rod. Two mounting frames are arranged, one of which is arranged at the upper end of the upper cover, and the other mounting frame is arranged on the outer side of the base. Both ends of the hydraulic rod are rotatably arranged on the two mounting frames.

[0015] As a preferred solution, two auxiliary components are provided and are respectively arranged on the left and right sides between the upper cover and the base.

[0016] As a preferred solution, three air extraction ports are provided, and the three air extraction ports are evenly spaced and arranged at the rear end of the base; correspondingly, the air extraction pipe has three pipe openings, and the three pipe openings are respectively connected to the three air extraction ports.

[0017] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that the workpiece is placed in the accommodating cavity and the pre-evacuation mechanism is used to perform a vacuum operation through the design of various components, thereby realizing the pre-forming process of the workpiece and the carbon fiber. The pre-formed workpiece is taken out by opening the upper cover, and the traditional manual method of separating the vacuum bag from the workpiece is eliminated, thereby improving the efficiency of pre-evacuation and shaping of the workpiece. The structural design is ingenious and reasonable, which ensures the integrity of the vacuum bag and is conducive to the reuse of the vacuum bag. The operation is simple and convenient to use, which meets the use needs of users and has a wide range of applications.

[0018] Secondly, the setting of the first installation groove and the positioning groove is conducive to the installation and positioning of the sealing strip on the base, and the sealing contact between the sealing strip and the upper cover, which ensures the sealing of the accommodating cavity, improves the pre-evacuation shaping quality of the workpiece, and has good usability. At the same time, the detachable setting of the cover plate and the cover body is conducive to the replacement operation of the vacuum bag on the upper cover, and the setting of the rubber pad avoids direct contact between the vacuum bag and the cover plate and the cover body, ensuring the use stability of the vacuum bag, thereby improving the pre-evacuation shaping quality of the workpiece;

[0019] Furthermore, the provision of the auxiliary components facilitates the operation of opening or closing the upper cover, ensures the airtightness of the accommodating cavity, and thus ensures the stable quality of the pre-drawing and shaping of the workpiece.

[0020] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model (the vacuum device is not shown in the figure);

[0022] Figure 2 It is a three-dimensional schematic diagram of another angle of an embodiment of the utility model (the vacuum device is not shown in the figure);

[0023] Figure 3 It is an exploded view of an embodiment of the utility model;

[0024] Figure 4 is a cross-sectional view of an embodiment of the utility model (the vacuum bag is not shown in the figure);

[0025] Figure 5 yes Figure 4 Enlarged schematic diagram of part A.

[0026] Description of the accompanying drawings:

[0027] 11. Base 111. Accommodating cavity

[0028] 112. Air extraction port 113. First installation slot

[0029] 12. Upper cover 121. Positioning slot

[0030] 122. Cover body 123. Cover plate

[0031] 124. Second mounting groove 125. Opening

[0032] 126, rubber pad 13, vacuum bag

[0033] 141, sealing strip 151, exhaust pipe

[0034] 16. Hinge assembly 17. Handle

[0035] 18. Auxiliary components 181. Mounting frame

[0036] 182. Hydraulic rod. DETAILED DESCRIPTION

[0037] Please refer to Figures 1 to 5 As shown, it shows the specific structure of an embodiment of the utility model.

[0038] A pre-vacuum fixture structure includes a base 11, an upper cover 12, a vacuum bag 13, a sealing structure and a pre-vacuum mechanism; wherein:

[0039] The base 11 has a receiving cavity 111 with an open upper end; the upper cover 12 can be opened and closed at the upper end of the base 11 to close the receiving cavity 111; the vacuum bag 13 is arranged on the upper cover 12 and is located on the upper side of the receiving cavity 111; the sealing structure is arranged between the upper cover 12 and the base 11; the outer side of the base 11 is provided with an air extraction port 112 connected to the receiving cavity, and the pre-extraction mechanism includes a vacuum extraction device (not shown in the figure), and the vacuum extraction device has an air extraction pipe 151, the The exhaust pipe 151 is connected to the exhaust port 112. Here, the upper cover 12 is arranged on the base 11 through the hinge assembly 16. The hinge assembly 16 is arranged at the rear end of the upper cover 12 and the base 11. The exhaust port 112 is located beside the hinge assembly 16. There are three exhaust ports 112. The three exhaust ports 112 are evenly spaced and arranged at the rear end of the base 11. Correspondingly, the exhaust pipe 151 has three pipe openings, which are respectively connected to the three exhaust ports 112.

[0040] When in use, a workpiece provided with carbon fiber yarn is placed in the accommodating cavity, and the carbon fiber yarn is located on the upper surface of the workpiece. The accommodating cavity is closed by covering the upper cover, and then the accommodating cavity is evacuated by the pre-evacuation mechanism. The vacuum bag faces the carbon fiber yarn and is in close contact with the carbon fiber yarn under the pressure of the pre-evacuation operation, so that the carbon fiber yarn is pre-formed on the workpiece. Finally, the pre-evacuated workpiece is sent to the next process. In this way, through the design of various components, the workpiece is placed in the accommodating cavity and evacuated by the pre-evacuation mechanism, thereby realizing the pre-forming process of the workpiece and the carbon fiber, and the pre-formed workpiece is taken out by opening the upper cover, eliminating the traditional manual method of separating the vacuum bag from the workpiece, thereby improving the efficiency of pre-evacuation and shaping of the workpiece. The structural design is ingenious and reasonable, which ensures the integrity of the vacuum bag and is conducive to the reuse of the vacuum bag. The operation is simple and easy to use, which meets the needs of users and has a wide range of applications.

[0041] In this embodiment, the sealing structure includes a sealing strip 141, which is arranged to extend in a ring shape along the outer periphery of the upper open end of the base 11, and the sealing strip 141 is arranged at the upper end of the base 11. Specifically, a first mounting groove 113 is arranged at the upper end of the base 11, and the first mounting groove 113 is arranged to extend in a ring shape around the outer periphery of the upper open end. The sealing strip 141 is arranged on the first mounting groove 113, and the upper end of the sealing strip 141 is exposed outside the first mounting groove 113. A positioning groove 121 is arranged at the lower end of the upper cover 12 corresponding to the sealing strip. When the upper cover 12 is covered on the base 11, the upper end of the sealing strip 141 contacts the inner wall of the positioning groove 121. In this way, the arrangement of the first mounting groove and the positioning groove is conducive to the installation and positioning of the sealing strip on the base, and the sealing contact between the sealing strip and the upper cover, thereby ensuring the sealing of the accommodating cavity, improving the pre-drawing and shaping quality of the workpiece, and having good usability.

[0042] In addition, the upper cover 12 includes a cover body 122 and a cover plate 123. The cover body 122 is provided with a second installation groove 124 for installing and positioning the vacuum bag. The cover plate 123 is detachably arranged at the upper end of the cover body 122 and closes the second installation groove 124. The lower end of the second installation groove 124 passes through the cover body to form an opening 125. In addition, a rubber pad 126 is provided on the vacuum bag 13. Two rubber pads 126 are provided. Both rubber pads 126 are ring-shaped. The two rubber pads 126 are respectively arranged at the upper end and the lower end of the vacuum bag 13 and are in contact with the cover plate 123 and the second mounting groove 124 respectively. The positioning groove 121 is arranged at the lower end of the cover body 122. In this way, the detachable arrangement of the cover plate and the cover body is conducive to the replacement operation of the vacuum bag on the upper cover. In addition, the arrangement of the rubber pads avoids direct contact between the vacuum bag and the cover plate and the cover body, thereby ensuring the stability of the vacuum bag and improving the pre-vacuum shaping quality of the workpiece.

[0043] Preferably, a handle 17 is provided at the front end of the upper cover 12 to facilitate the user to operate the upper cover to open the accommodating cavity to place or take out the workpiece.

[0044] In addition, an auxiliary component 18 is arranged on the outer side between the upper cover 12 and the base 11, and the auxiliary component 18 includes a mounting frame 181 and a hydraulic rod 182. Two mounting frames 181 are arranged, one of which is arranged at the upper end of the upper cover 12, and the other mounting frame 181 is arranged on the outer side of the base 11. Both ends of the hydraulic rod 182 are rotatably arranged on the two mounting frames 181. Here, two auxiliary components 18 are arranged and are respectively arranged on the left and right sides between the upper cover 12 and the base 11. In this way, the setting of the auxiliary component is conducive to the operation of opening or closing the upper cover, ensuring the airtightness of the accommodating cavity, thereby ensuring the stable quality of the pre-drawing and shaping of the workpiece.

[0045] The design focus of the utility model is that, mainly through the design of various components, the workpiece is placed in the accommodating cavity and the vacuum operation is performed by the pre-evacuation mechanism, so as to realize the pre-forming process of the workpiece and the carbon fiber, and the pre-formed workpiece is taken out by opening the upper cover, eliminating the traditional manual method of separating the vacuum bag from the workpiece, thereby improving the efficiency of pre-evacuation and shaping of the workpiece, the structural design is ingenious and reasonable, the integrity of the vacuum bag is ensured, and the vacuum bag is conducive to the reuse of the vacuum bag. The operation is simple, the use is convenient, the use needs of users are met, and the application range is wide;

[0046] Secondly, the setting of the first installation groove and the positioning groove is conducive to the installation and positioning of the sealing strip on the base, and the sealing contact between the sealing strip and the upper cover, which ensures the sealing of the accommodating cavity, improves the pre-evacuation shaping quality of the workpiece, and has good usability. At the same time, the detachable setting of the cover plate and the cover body is conducive to the replacement operation of the vacuum bag on the upper cover, and the setting of the rubber pad avoids direct contact between the vacuum bag and the cover plate and the cover body, ensuring the use stability of the vacuum bag, thereby improving the pre-evacuation shaping quality of the workpiece;

[0047] Furthermore, the provision of the auxiliary components facilitates the operation of opening or closing the upper cover, ensures the airtightness of the accommodating cavity, and thus ensures the stable quality of the pre-drawing and shaping of the workpiece.

[0048] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A pre-vacuum fixture structure, characterized in that: It includes a base, an upper cover, a vacuum bag, a sealing structure and a pre-evacuation mechanism; wherein: the base has a accommodating cavity with an open upper end; the upper cover can be opened and closed at the upper end of the base to close the accommodating cavity; the vacuum bag is arranged on the upper cover and is located on the upper side of the accommodating cavity; the sealing structure is arranged between the upper cover and the base; the outer side of the base is provided with an exhaust port connected to the accommodating cavity, and the pre-evacuation mechanism includes a vacuum pumping device, the vacuum pumping device has an exhaust pipe, and the exhaust pipe is connected to the exhaust port.

2. A pre-vacuum fixture structure according to claim 1, characterized in that: The sealing structure comprises a sealing strip, which is arranged in a circular shape extending along the outer periphery of the upper open end of the base, and is arranged at the upper end of the base.

3. A pre-vacuum fixture structure according to claim 2, characterized in that: A first mounting groove is provided at the upper end of the base, and the first mounting groove is extended in an annular manner around the outer periphery of the upper end opening. The sealing strip is provided on the first mounting groove, and the upper end of the sealing strip is exposed outside the first mounting groove. A positioning groove is provided at the lower end of the upper cover corresponding to the sealing strip. When the upper cover is covered on the base, the upper end of the sealing strip contacts the inner wall of the positioning groove.

4. The pre-vacuum fixture structure according to claim 1, characterized in that: The upper cover is arranged on the base through a hinge assembly, the hinge assembly is arranged at the rear end of the upper cover and the base, and the air extraction port is located at the side of the hinge assembly.

5. The pre-vacuum fixture structure according to claim 1, characterized in that: The upper cover includes a cover body and a cover plate. The cover body is provided with a second installation groove for installing and positioning the vacuum bag. The cover plate is detachably arranged on the upper end of the cover body and closes the second installation groove. The lower end of the second installation groove passes through the cover body to form an opening.

6. A pre-vacuum fixture structure according to claim 5, characterized in that: The vacuum bag is provided with a rubber pad, two of which are annular and extend in a ring shape around the edge of the vacuum bag. The two rubber pads are respectively arranged at the upper end and the lower end of the vacuum bag and are respectively in contact with the cover plate and the second mounting groove.

7. The pre-vacuum fixture structure according to claim 1, characterized in that: A handle is arranged at the front end of the upper cover.

8. The pre-vacuum fixture structure according to claim 1, characterized in that: An auxiliary component is arranged on the outer side between the upper cover and the base, and the auxiliary component includes a mounting frame and a hydraulic rod. Two mounting frames are arranged, one of which is arranged at the upper end of the upper cover, and the other mounting frame is arranged on the outer side of the base. Both ends of the hydraulic rod are rotatably arranged on the two mounting frames.

9. The pre-vacuum fixture structure according to claim 8, characterized in that: The auxiliary components are provided with two and are respectively arranged on the left side and the right side between the upper cover and the base.

10. The pre-vacuum fixture structure according to claim 1, characterized in that: There are three air extraction ports, which are evenly spaced and arranged at the rear end of the base; correspondingly, the air extraction pipe has three pipe openings, which are respectively connected to the three air extraction ports.

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