A wooden mold for vacuum forming

Abstract

The application discloses a wooden mold for vacuum forming and belongs to the technical field of wooden molds, which comprises a vacuum base, a placing plate is fixedly installed on the inner wall of the vacuum base at equal distances, and a forming mechanism is arranged on the inner wall of the vacuum base. In the application, the forming insert is provided, with the increase of the use time of the forming insert, the positioning pin is moved downwards to the vacuum base through the shift plate, after the one end of the positioning pin is separated from the positioning groove, the fixed insertion plate is pulled out from the vacuum base, at this time, the forming insert loses the fixation of the fixed insertion plate, then the forming insert to be replaced is replaced, the modularization of the wooden mold is realized, the detachable forming insert design is adopted, the forming punch does not need to be integrally replaced, only the corresponding forming insert needs to be replaced according to the special-shaped structure of the target forming piece, the production of forming pieces with different specifications and different special-shaped structures can be realized, the period of mold modification and replacement is greatly shortened, and the mold adaptation cost is reduced.

Description

Technical Field

[0001] This invention belongs to the field of wood mold technology, and particularly relates to a wood mold for vacuum forming. Background Technology

[0002] Vacuum forming is a low-cost, high-efficiency plastic molding method widely used in packaging, toys, automotive interiors, medical device shells, and other fields. The performance of its core mold directly determines the precision, surface quality, and production efficiency of the molded parts. Currently, vacuum forming molds in the industry are mainly divided into three categories: metal molds, plastic molds, and wooden molds. Among them, wooden molds have become the first choice for small and medium batch production, sample trial production, and multi-variety rotation production scenarios due to their advantages such as readily available raw materials, short processing cycle, low cost, light weight, and easy modification.

[0003] A search revealed Chinese Patent Publication No. CN208016888U, which discloses a novel wooden mold, comprising a mold body. The mold body includes a base plate, with two symmetrically arranged second side plates welded to the top of the base plate. Sliding grooves are formed on both sides of the top of the base plate, within which first side plates are slidably mounted. The top of the first side plates extends above the base plate. Two sets of cylindrical blocks are welded to the sides of the two first side plates that are close to each other. Multiple cylindrical grooves are formed on both sides of the second side plates, with the cylindrical blocks engaging with their corresponding grooves. The sides of the two first side plates that are close to each other are in contact with the second side plates. Fixing plates are welded to both sides of the top of the base plate, with multiple springs welded to the sides of the two fixing plates that are close to each other. This invention features a simple structure, convenient installation, and is economical and practical. The cylindrical blocks and grooves enhance its stability, and the horizontal plates and fixing grooves facilitate cleaning of the first and second side plates.

[0004] Regarding the aforementioned technologies, the inventors discovered the following drawbacks: wood materials have significant water absorption characteristics; during vacuum forming, high-temperature airflow is required to heat the plastic sheet; the mold surface is prone to cracking and deformation due to uneven thermal expansion and contraction, resulting in warping and dimensional deviations in the formed parts, shortening the mold's service life; furthermore, the method of fixing the mold to the vacuum forming machine's worktable is rudimentary, often using bolts for direct fastening, which is cumbersome to disassemble and assemble, and the mold's level is difficult to adjust after fixing, easily leading to uneven wall thickness in the formed parts due to mold tilting.

[0005] Therefore, the present invention provides a wooden mold for vacuum forming to solve the above-mentioned problems. Summary of the Invention

[0006] The purpose of this invention is to provide a wooden mold for vacuum forming in order to solve the above-mentioned problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a wooden mold for vacuum forming, comprising a vacuum base, wherein a plurality of support legs are fixedly installed on the lower surface of the vacuum base, a vacuum pipe is connected to the lower surface of the vacuum base, a plurality of placement plates are fixedly installed at equal distances between the two inner sidewalls of the vacuum base, a forming mechanism is placed on the upper surface of the placement plate, and an anti-blocking mechanism is provided on the bottom inner wall of the vacuum base.

[0008] A molding mechanism includes several molding inserts. Each molding insert has a limiting groove on its side wall and a limiting strip fixedly installed on the side wall of another molding insert. The limiting strip and the limiting groove are mutually adapted to each other. A connecting block is fixedly installed on the lower surface of each molding insert. The connecting block is designed to be cylindrical. A positioning plate is fixedly installed on the lower surface of the connecting block. The diameter of the positioning plate is larger than that of the connecting block.

[0009] An anti-clogging mechanism includes a rotating disk with a plurality of slots evenly spaced on the inner wall of the rotating disk. A filter plate is fixedly installed on the bottom inner wall of the slot, and the filter plate is adapted to the vacuum pipe.

[0010] As a further description of the above technical solution:

[0011] The forming mechanism also includes a fixed insert plate. The upper surface of the fixed insert plate is provided with a slot. The width of the slot is the same as that of the connecting block. The slot and the connecting block are mutually adapted. One end of the fixed insert plate is located outside the vacuum base, and the other end is located inside the vacuum base. A positioning groove is provided on the inner wall of the fixed insert plate. The positioning groove is located at the position where the fixed insert plate is outside the vacuum base.

[0012] As a further description of the above technical solution:

[0013] A support plate is fixedly installed on the side wall of the vacuum base. A positioning spring and a limiting rod are fixedly installed on the upper surface of the support plate. One end of the limiting rod passes through the interior of the positioning spring and extends to the exterior of the positioning spring.

[0014] As a further description of the above technical solution:

[0015] A positioning pin is slidably mounted on the outer surface of the limiting rod. The lower surface of the positioning pin is fixedly connected to one end of the positioning spring. A lever is fixedly mounted on both sides of the positioning pin.

[0016] As a further description of the above technical solution:

[0017] One end of the positioning pin is adapted to the positioning groove, and one end of the positioning pin is set as an inclined surface.

[0018] As a further description of the above technical solution:

[0019] A rotating rod is fixedly installed on the lower surface of the rotating disk. One end of the rotating rod extends to the outside of the lower surface of the vacuum base, and a number of insertion holes are evenly arranged on the outer surface of the rotating rod.

[0020] As a further description of the above technical solution:

[0021] A mounting plate is fixedly installed on the lower surface of the vacuum base, and a connecting spring is fixedly installed on the side wall of the mounting plate. A dial is fixedly installed on one end of the connecting spring.

[0022] As a further description of the above technical solution:

[0023] A pin is fixedly installed on the side wall of the dial. One end of the pin passes through the interior of the connecting spring and extends to the outside of the other side wall of the mounting plate. One end of the pin is adapted to the socket.

[0024] As a further description of the above technical solution:

[0025] A scraper is slidably installed inside the cavity of the vacuum base. One end of the scraper extends to the outside of the side wall of the vacuum base and is flush with the side wall of the vacuum base. The other end of the scraper is provided with bristles that are adapted to the filter plate.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. In this invention, by setting a molding insert, as the molding insert is used for a longer period of time, the positioning pin is moved downwards to the vacuum base by a lever. After one end of the positioning pin is disengaged from the positioning groove, the fixing plate is pulled out from the vacuum base. At this time, the molding insert loses the fixing of the fixing plate, and then the molding insert that needs to be replaced is replaced. This realizes the modularization of the wooden mold. The design of the detachable molding insert eliminates the need to replace the entire molding punch. Only the corresponding molding insert needs to be replaced according to the irregular structure of the target molded part. This enables the production of molded parts of different specifications and irregular structures, greatly shortens the mold modification and replacement cycle, and reduces the mold adaptation cost.

[0028] 2. In this invention, a molding mechanism is provided to place the molding inserts sequentially on the placement plate. Then, one end of the fixing plate is inserted into the vacuum base. At this time, the slot of the fixing plate passes between the positioning plate and the molding insert, and the molding insert is fixed under the action of the slot. After the fixing plate is inserted into place, the positioning pin is inserted into the positioning groove of the fixing plate under the action of the positioning spring and the limiting rod. Thus, the molding insert is fixed in the vacuum base by fixing the fixing plate. All components of the mold adopt a detachable connection structure, which is convenient for disassembly and maintenance. It can quickly complete mold cleaning, parts replacement and other operations, which is suitable for small and medium batch production, sample trial production and multi-variety rotation production scenarios, improves the production flexibility of enterprises and meets the diverse molding needs of the market.

[0029] 3. In this invention, an anti-clogging mechanism is provided. When one of the filter plates becomes clogged, the pin is pulled out of the insertion hole by a dial. When the rotating rod is no longer secured by the pin, it drives the rotating disk to rotate, thereby replacing the filter plate and blocking the vacuum pipe. Then, by pulling the scraper, the debris on the filter plate is cleaned by scraping during the movement of the scraper, filtering out the wood chips and dust generated during the adsorption process. This prevents the vacuum pipe and adsorption holes from becoming clogged, reduces the frequency of mold cleaning and pipe unblocking, lowers the mold maintenance cost and labor cost for enterprises, ensures the stability of the mold vacuum, avoids poor adsorption effect caused by vacuum leakage, and further improves the molding stability. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of a wooden mold used for vacuum forming.

[0031] Figure 2 This is an exploded structural diagram of a wooden mold used for vacuum forming.

[0032] Figure 3 This is a partially exploded structural diagram of the forming mechanism in a wooden mold used for vacuum forming.

[0033] Figure 4 For a type of wooden mold used in vacuum forming Figure 1 A magnified structural diagram of point A in the middle.

[0034] Figure 5 This is a partially exploded structural diagram of a wooden mold used for vacuum forming.

[0035] Figure 6 This is a three-dimensional structural diagram of a wooden mold used for vacuum forming from another angle.

[0036] Figure 7 For a type of wooden mold used in vacuum forming Figure 6A magnified structural diagram at point B in the middle.

[0037] Legend:

[0038] 1. Vacuum base; 2. Vacuum pipe; 3. Forming mechanism; 301. Forming insert; 302. Fixing plate; 303. Connecting block; 304. Positioning plate; 305. Limiting strip; 306. Positioning groove; 307. Support plate; 308. Positioning spring; 309. Limiting rod; 3010. Positioning pin; 3011. Dial plate; 3012. Limiting groove; 4. Anti-blocking mechanism; 401. Rotating disc; 402. Filter plate; 403. Scraper; 404. Rotating rod; 405. Insertion hole; 406. Mounting plate; 407. Connecting spring; 408. Dial plate; 409. Pin; 5. Placement plate. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In specific implementation, such as Figures 1-7 As shown, the present invention provides a technical solution: a wooden mold for vacuum forming, comprising a vacuum base 1, a plurality of support legs fixedly installed on the lower surface of the vacuum base 1, a vacuum pipe 2 connected to the lower surface of the vacuum base 1, a plurality of placement plates 5 fixedly installed at equal distances between the two inner sidewalls of the vacuum base 1, a forming mechanism 3 placed on the upper surface of the placement plate 5, and an anti-blocking mechanism 4 provided on the bottom inner wall of the vacuum base 1; the forming mechanism 3 includes a plurality of forming inserts 301, a limiting groove 3012 provided on the sidewall of the forming insert 301, a limiting strip 305 fixedly installed on the sidewall of another forming insert 301, the limiting strip 305 and the limiting groove 3012 being mutually adapted to each other, a connecting block 303 fixedly installed on the lower surface of the forming insert 301, the connecting block 303 being designed to be cylindrical, and a positioning plate 304 fixedly installed on the lower surface of the connecting block 303, the diameter of the positioning plate 304 being larger than that of the connecting block 303.

[0041] The molding mechanism 3 also includes a fixed insert plate 302. The upper surface of the fixed insert plate 302 is provided with a slot. The width of the slot is the same as that of the connecting block 303. The slot and the connecting block 303 are mutually compatible. One end of the fixed insert plate 302 is located outside the vacuum base 1, and the other end is located inside the vacuum base 1. A positioning groove 306 is provided on the inner wall of the fixed insert plate 302. The positioning groove 306 is located at the position where the fixed insert plate is located outside the vacuum base.

[0042] A support plate 307 is fixedly installed on the side wall of the vacuum base 1. A positioning spring 308 and a limiting rod 309 are fixedly installed on the upper surface of the support plate 307. One end of the limiting rod 309 passes through the interior of the positioning spring 308 and extends to the exterior of the positioning spring 308.

[0043] A positioning pin 3010 is slidably mounted on the outer surface of the limiting rod 309. The lower surface of the positioning pin 3010 is fixedly connected to one end of the positioning spring 308. A lever plate 3011 is fixedly mounted on both sides of the positioning pin 3010.

[0044] One end of the positioning pin 3010 is adapted to the positioning groove 306, and one end of the positioning pin 3010 is set as an inclined surface.

[0045] Specifically, by setting the molding mechanism 3, the molding inserts 301 are placed sequentially on the placement plate 5. Then, one end of the fixing plate 302 is inserted into the vacuum base 1. At this time, the slot of the fixing plate 302 will pass between the positioning plate 304 and the molding insert 301, and the molding insert 301 will be fixed under the action of the slot. After the fixing plate 302 is inserted into place, the positioning pin 3010 will be inserted into the positioning groove of the fixing plate 302 under the action of the positioning spring 308 and the limiting rod 309. Within 306, the molding insert 301 is fixed in the vacuum base 1 by fixing the fixing plate 302. As the molding insert 301 is used for longer periods, the positioning pin 3010 is moved downwards from the vacuum base 1 by the lever 3011. After one end of the positioning pin 3010 is disengaged from the positioning groove 306, the fixing plate 302 is pulled out from the vacuum base 1. At this point, the molding insert 301 is no longer fixed by the fixing plate 302, and then the molding insert 301 that needs to be replaced is replaced.

[0046] The anti-blocking mechanism 4 includes a rotating disk 401. Several slots are evenly spaced on the inner wall of the rotating disk 401. A filter plate 402 is fixedly installed on the inner wall of the bottom surface of the slot. The filter plate 402 is compatible with the vacuum pipe 2.

[0047] A rotating rod 404 is fixedly installed on the lower surface of the rotating disk 401. One end of the rotating rod 404 extends to the lower surface of the vacuum base 1. Several insertion holes 405 are evenly arranged on the outer surface of the rotating rod 404.

[0048] A mounting plate 406 is fixedly installed on the lower surface of the vacuum base 1. A connecting spring 407 is fixedly installed on the side wall of the mounting plate 406. A dial 408 is fixedly installed on one end of the connecting spring 407.

[0049] A pin 409 is fixedly installed on the side wall of the dial 408. One end of the pin 409 passes through the interior of the connecting spring 407 and extends to the outside of the other side wall of the mounting plate 406. One end of the pin 409 is adapted to the socket 405.

[0050] A scraper 403 is slidably installed inside the cavity of the vacuum base 1. One end of the scraper 403 extends to the outside of the side wall of the vacuum base 1, and one end of the scraper 403 is flush with the side wall of the vacuum base 1. The other end of the scraper 403 is provided with bristles, which are adapted to the filter plate 402.

[0051] Specifically, by setting an anti-clogging mechanism 4, the material is laid on the molding insert 301, and the vacuum base 1 is vacuumed through the vacuum pipe 2. As the air in the vacuum base 1 is extracted, the material is plasticized according to the shape of the molding insert 301. During the vacuuming process, the debris in the molding insert 301 moves with the air flow. Under the action of the filter plate 402, the debris will adhere to the top of the filter plate 402, preventing the debris from entering the vacuum pipe 2 and causing blockage. When one of the filter plates 402 becomes blocked, the pin 409 is pulled out from the insertion hole 405 by the dial 408. When the rotating rod 404 is no longer fixed by the pin 409, the rotating rod 404 drives the rotating disk 401 to rotate, thereby replacing the other filter plate 402 to block the vacuum pipe 2. Then, the scraper 403 is pulled out, and the debris on the filter plate 402 is cleaned by scraping during the movement of the scraper 403.

[0052] Working principle: The molding inserts 301 are placed sequentially on the placement plate 5. Then, one end of the fixing plate 302 is inserted into the vacuum base 1. At this time, the slot of the fixing plate 302 passes between the positioning plate 304 and the molding insert 301, fixing the molding insert 301 under the action of the slot. After the fixing plate 302 is in place, the positioning pin 3010, under the action of the positioning spring 308 and the limiting rod 309, will insert one end into the positioning groove 306 of the fixing plate 302. Thus, the molding insert 301 is fixed in the vacuum base 1 by fixing the fixing plate 302. Then, the material is laid on the molding insert 301. The vacuum base 1 is evacuated through the vacuum pipe 2. As the air in the vacuum base 1 is extracted, the material... The molding insert 301 is shaped and molded. During the vacuuming process, the debris in the molding insert 301 moves with the airflow. Under the action of the filter plate 402, the debris will adhere to the top of the filter plate 402, preventing the debris from entering the vacuum pipe 2 and causing blockage. When one of the filter plates 402 becomes blocked, the dial 408 pulls one end of the pin 409 out of the socket 405. When the rotating rod 404 is no longer fixed by the pin 409, the rotating rod 404 drives the rotating disk 401 to rotate, thereby replacing the other filter plate 402 to block the vacuum pipe 2. Then, the scraper 403 is pulled out and the debris on the filter plate 402 is cleaned by scraping during the movement of the scraper 403.

[0053] As the molding insert 301 is used for a longer period of time, the positioning pin 3010 is moved downwards from the vacuum base 1 by the lever 3011. After one end of the positioning pin 3010 is disengaged from the positioning groove 306, the fixing plate 302 is pulled out from the vacuum base 1. At this time, the molding insert 301 is no longer fixed by the fixing plate 302, and then the molding insert 301 that needs to be replaced is replaced.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wooden mold for vacuum forming, characterized in that: include: Vacuum base (1), a number of support legs are fixedly installed on the lower surface of the vacuum base (1), a vacuum pipe (2) is connected to the lower surface of the vacuum base (1), a number of placement plates (5) are fixedly installed at equal distances between the two inner side walls of the vacuum base (1), a forming mechanism (3) is placed on the upper surface of the placement plate (5), and an anti-blocking mechanism (4) is provided on the bottom inner wall of the vacuum base (1). A molding mechanism (3) includes several molding inserts (301). A limiting groove (3012) is provided on the side wall of each molding insert (301). A limiting strip (305) is fixedly installed on the side wall of another molding insert (301). The limiting strip (305) and the limiting groove (3012) are mutually adapted. A connecting block (303) is fixedly installed on the lower surface of each molding insert (301). The connecting block (303) is designed to be cylindrical. A positioning plate (304) is fixedly installed on the lower surface of the connecting block (303). The diameter of the positioning plate (304) is larger than that of the connecting block (303). The anti-blocking mechanism (4) includes a rotating disk (401). Several slots are evenly spaced on the inner wall of the rotating disk (401). A filter plate (402) is fixedly installed on the inner wall of the bottom surface of the slot. The filter plate (402) is compatible with the vacuum pipe (2).

2. A wooden mold for vacuum forming according to claim 1, characterized in that, The forming mechanism (3) further includes a fixed insert plate (302). The upper surface of the fixed insert plate (302) is provided with a slot. The width of the slot is the same as that of the connecting block (303). The slot and the connecting block (303) are mutually adapted. One end of the fixed insert plate (302) is located outside the vacuum base (1), and the other end is located inside the vacuum base (1). The inner wall of the fixed insert plate (302) is provided with a positioning groove (306). The positioning groove (306) is located at the position where the fixed insert plate is located outside the vacuum base.

3. A wooden mold for vacuum forming according to claim 1, characterized in that, A support plate (307) is fixedly installed on the side wall of the vacuum base (1). A positioning spring (308) and a limiting rod (309) are fixedly installed on the upper surface of the support plate (307). One end of the limiting rod (309) passes through the interior of the positioning spring (308) and extends to the exterior of the positioning spring (308).

4. A wooden mold for vacuum forming according to claim 3, characterized in that, The outer surface of the limiting rod (309) is slidably mounted with a positioning pin (3010), the lower surface of the positioning pin (3010) is fixedly connected to one end of the positioning spring (308), and a lever plate (3011) is fixedly mounted on both sides of the positioning pin (3010).

5. A wooden mold for vacuum forming according to claim 4, characterized in that, One end of the positioning pin (3010) is adapted to the positioning groove (306), and one end of the positioning pin (3010) is set as an inclined surface.

6. A wooden mold for vacuum forming according to claim 1, characterized in that, A rotating rod (404) is fixedly installed on the lower surface of the rotating disk (401). One end of the rotating rod (404) extends to the lower surface of the vacuum base (1). A plurality of insertion holes (405) are provided at equal intervals on the outer surface of the rotating rod (404).

7. A wooden mold for vacuum forming according to claim 1, characterized in that, A mounting plate (406) is fixedly installed on the lower surface of the vacuum base (1), a connecting spring (407) is fixedly installed on the side wall of the mounting plate (406), and a dial (408) is fixedly installed on one end of the connecting spring (407).

8. A wooden mold for vacuum forming according to claim 7, characterized in that, A pin (409) is fixedly installed on the side wall of the dial (408). One end of the pin (409) passes through the interior of the connecting spring (407) and extends to the outside of the other side wall of the mounting plate (406). One end of the pin (409) is adapted to the socket (405).

9. A wooden mold for vacuum forming according to claim 1, characterized in that, A scraper (403) is slidably installed inside the cavity of the vacuum base (1). One end of the scraper (403) extends to the outside of the side wall of the vacuum base (1), and one end of the scraper (403) is flush with the side wall of the vacuum base (1). The other end of the scraper (403) is provided with bristles, which are adapted to the filter plate (402).

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