Plastic suction mold capable of rapidly replacing plates

Abstract

The utility model discloses a plastic uptake mould capable of quickly changing a plate, which is characterized in that a replacement frame is arranged at the bottom of a movable frame, a bonding layer for bonding a plastic uptake sheet is arranged at the bottom of the replacement frame, a locking piece is rotatably connected to the outer side surface of the movable frame, and a cam structure matched with the side surface of the movable frame is arranged at one end of the locking piece; the top of the other end of the locking piece is provided with an abutting face abutting against the bottom of the blister sheet, and the side face of the other end of the locking piece is provided with a guide face matched with the guide ring. In the downward installation process, the guide face on the locking piece is matched with the guide ring, the final downward pressing direction is guided, the plastic uptake precision is improved, the end of the locking piece abuts against the outer side of the guide ring, the fixing effect is improved, and when the plastic uptake sheet on the replacement frame is taken down and glue is left, the replacement frame is replaced, so that the plastic uptake sheet is replaced, and the plastic uptake precision is improved. Normal use of the movable frame is guaranteed, the replacement frame is cleaned in a follow-up unified mode, and the efficiency of plastic uptake work is improved.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular to a vacuum forming mold with quick plate changing. Background Technology

[0002] Vacuum forming molds are key forming tools used in thermoforming processes (vacuum forming). They use negative pressure to adhere heated and softened plastic sheets to the mold surface, and after cooling and solidification, a plastic product of a specific shape is obtained. Vacuum forming molds typically consist of a cavity, venting system, and positioning device. Materials used include aluminum alloy, resin, steel, or 3D printing materials to meet different requirements for precision, lifespan, and cost. Aluminum alloy molds are lightweight and have fast thermal conductivity, making them suitable for small to medium batch production. Resin molds are low-cost and can quickly create complex curved surfaces. They are widely used in the production of thin-walled products such as food packaging trays, electronic product liners, and medical device shells, featuring short development cycles and low mold costs, making them particularly suitable for small-batch customized product manufacturing.

[0003] In the prior art, the invention patent with authorization announcement number "CN103407150B" discloses a vacuum forming mold, which uses a built-in venting system in the cavity to suck air from a heated and softened film, causing it to adhere to a suction mesh plate. Generally, a frame is needed to fix the film. For ease of fixation, the prior art generally uses adhesive to increase the bonding area and the strength of the connection between the film and the frame. However, the adhesive treatment is cumbersome and it is easy to leave adhesive residue. Utility Model Content

[0004] The purpose of this invention is to provide a quick-change vacuum forming mold that improves vacuum forming efficiency by rapidly changing the bonding position.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a quick-change blister mold, comprising a base and a movable frame, wherein the upper surface of the base is provided with an opening, the opening being recessed downward on the upper surface of the base to form an air suction chamber, the side of the base is provided with an air suction port communicating with the air suction chamber, the upper surface of the base is provided with a fixed frame, a perforated plate is provided between the fixed frame and the base, a bolt locking part is provided between the edges of the base and the fixed frame, an elastic sealing ring is provided between the base and the fixed frame, the inner side of the fixed frame extends upward to form a guide ring, the bottom of the movable frame is provided with a replacement frame, the bottom of the replacement frame is provided with an adhesive layer for bonding blister sheets, the outer side of the movable frame is rotatably connected with a locking member, one end of the locking member is provided with a cam structure that cooperates with the side of the movable frame, the top of the other end of the locking member is provided with an abutment surface for the bottom of the blister sheet to abut, and the side of the other end of the locking member is a guide surface that cooperates with the guide ring.

[0006] Preferably, the locking member comprises a vertical section and a horizontal section, the outer side of the base is provided with a fixed block, the cam structure is arranged at one end of the vertical section and is rotationally connected with the fixed block, the other end of the vertical section is connected with one end of the horizontal section, the abutting surface is arranged at the other end of the horizontal section, and the guide surface is arranged to be inclined downward along the abutting surface.

[0007] By adopting the above technical scheme, the locking member with the horizontal section and the vertical section is L-shaped, and has good locking effect.

[0008] Preferably, the bottom of the moving frame is provided with a placing groove, the placing groove is arranged to penetrate outward along the horizontal direction, the placing groove is arranged to be recessed along the height direction of the moving frame, the placing groove is arranged around the edge of the moving frame, the replacing frame is arranged in the placing groove, the adhesive layer is arranged at the bottom of the replacing frame, and the placing groove is matched with the horizontal section.

[0009] By adopting the above technical scheme, the placing groove plays a role of providing the replacing frame, and is matched with the locking member to play a role of pressing the blister sheet and the replacing frame.

[0010] Preferably, the bolt locking part comprises a lower fixed hole, a middle fixed hole, an upper fixed hole and a locking bolt, the upper fixed hole is arranged around the edge of the fixed frame, the middle fixed hole is arranged on the mesh plate, the lower fixed hole is arranged on the base, and the locking bolt is connected with the lower fixed hole after sequentially penetrating through the upper fixed hole and the middle fixed hole.

[0011] By adopting the above technical scheme, a role of fixing and connecting the fixed frame is played.

[0012] Preferably, an internally threaded sleeve is bonded in the lower fixed hole, and the bottom of the locking bolt is threadedly connected with the internally threaded sleeve.

[0013] By adopting the above technical scheme, the internally threaded sleeve improves the durability and facilitates replacement of the mesh plate.

[0014] Preferably, the height of the guide ring is greater than the sum of the thickness of the upper part of the locking bolt and the thickness of the horizontal section.

[0015] By adopting the above technical scheme, interference between the locking bolt and the horizontal section is avoided after the moving frame moves downward.

[0016] Preferably, the base is provided with a pressing groove, the pressing groove is arranged to be recessed downward from the upper surface of the base, the bottom of the fixed frame is provided with a pressing block matched with the pressing groove, the pressing groove is arranged outside the lower fixed hole, and the elastic sealing ring is arranged in the pressing groove.

[0017] By adopting the technical scheme, the pressing block presses the elastic sealing ring when the locking bolt is locked, the sealing effect is improved, and air leakage between the fixed frame and the base is avoided.

[0018] Preferably, the base is provided with an air path partition plate in the air suction cavity, the air path partition plate is arranged in the air suction cavity in a spaced manner, the air suction port is arranged on one side of the base in the length direction, and the air suction sleeve is arranged in the air suction port.

[0019] By adopting the technical scheme, the negative pressure on the surface of the mesh plate is more uniform, and the plastic suction effect is improved.

[0020] Preferably, the base is provided with a guide hole at the corner position, the guide hole is arranged through the fixed frame, the mesh plate and the moving frame, and a guide column is slidably connected in the guide hole.

[0021] By adopting the technical scheme, when the plastic suction mold is not used, the base, the moving frame, the fixed frame and the mesh plate are fixed and stored through the cooperation of the guide column and the guide hole.

[0022] In summary, the plastic suction sheet is fixed to the bottom of the moving frame through the adhesive layer, and then the replacement frame is quickly fixed through the locking piece. During the downward installation process, the guide surface on the locking piece cooperates with the guide ring to guide the final downward direction, improve the plastic suction precision, the end of the locking piece abuts against the outer side of the guide ring to improve the fixing effect; when the plastic suction sheet on the replacement frame is taken off and glue is left, the replacement frame is replaced to ensure the normal use of the moving frame, and the replacement frame is cleaned later, thereby improving the plastic suction work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a cross-sectional schematic view of the embodiment;

[0024] Figure 2 is Figure 1 is an enlarged schematic view of part A shown in the figure;

[0025] Figure 3 is a top view of the embodiment;

[0026] Figure 4 is a structural schematic view of the mesh plate of the embodiment;

[0027] In the figure, 1, base; 11, opening; 12, air path partition; 13, suction cavity; 14, suction port; 15, suction sleeve; 16, guide hole; 17, guide column; 2, fixed frame; 21, mesh plate; 22, guide ring; 23, pressing groove; 24, pressing block; 25, elastic sealing ring; 3, moving frame; 31, placing groove; 32, replacement frame; 33, adhesive layer; 34, fixed block; 4, locking piece; 41, vertical section; 42, horizontal section; 43, cam structure; 44, abutting surface; 45, guide surface; 5, bolt locking part; 51, lower fixed hole; 52, internally threaded sleeve; 53, middle fixed hole; 54, upper fixed hole; 55, locking bolt. DETAILED DESCRIPTION

[0028] The utility model will be explained in further detail below in combination with the drawings.

[0029] The specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model, and the person skilled in the art can make a modification without creative contribution according to the need after reading the specification, but as long as it is in the right claim range of the utility model, it is protected by the patent law.

[0030] Embodiment:

[0031] As shown in Figures 1 to 4 A quick plate-changing blister mold, comprising a rectangular base 1 and a moving frame 3, the upper surface of the base 1 is provided with a rectangular opening 11, the opening 11 is recessed downward on the upper surface of the base 1 to form a suction cavity 13, in order to ensure that the negative pressure on the surface of the mesh plate 21 above the opening 11 is more uniform, as shown in Figure 1 and Figure 3 The base 1 is provided with an air path partition 12 in the suction cavity 13, four air path partitions 12 are arranged in the suction cavity 13, and a through slot is arranged on the air path partition 12, the suction port 14 is arranged on one side of the length direction of the base 1, the suction sleeve 15 is arranged in the suction port 14, the outer end of the suction sleeve 15 extends to the outside of the base 1, and the suction sleeve 15 is connected with a negative pressure device such as a negative pressure fan outside the base 1.

[0032] As shown in Figure 1 and Figure 2 In order to fix the mesh plate 21, the upper surface of the base 1 is provided with a fixed frame 2, the mesh plate 21 is clamped between the fixed frame 2 and the base 1,

[0033] As shown in Figure 2As shown, in order to fix the mesh plate 21, the base 1 and the edge position of the fixed frame 2 are provided with a bolt locking part 5, which includes a lower fixed hole 51, a middle fixed hole 53, an upper fixed hole 54 and a locking bolt 55. The upper fixed hole 54 is arranged around the edge of the fixed frame 2, the middle fixed hole 53 is arranged on the mesh plate 21, and the lower fixed hole 51 is arranged on the base 1. The lower fixed hole 51 can be a threaded hole, which is connected with the locking bolt 55, so that the locking bolt 55 is sequentially threaded through the upper fixed hole 54 and the middle fixed hole 53 and is screwed with the lower fixed hole 51. In order to improve the durability of the base 1 at the position of the lower fixed hole 51, the inner thread sleeve 52 is used to replace the thread in the lower fixed hole 51, that is, the inner thread sleeve 52 is adhered in the lower fixed hole 51 by structural adhesive, so that the bottom of the locking bolt 55 is screwed with the inner thread sleeve 52.

[0034] As shown in Figure 1 and Figure 2 , the inner side of the fixed frame 2 extends upward to form a guide ring 22, the height of the guide ring 22 is greater than the sum of the thickness of the upper part of the locking bolt 55 and the thickness of the horizontal section 42, which avoids the interference between the guide ring 22 and the locking bolt 55. The bottom of the moving frame 3 is provided with an adhesive layer 33, and the bottom of the adhesive layer 33 is adhered with a blister sheet. In order to fix the replacement frame 32 or the blister sheet, the outer side of the moving frame 3 is rotatably connected with a locking piece 4. One end of the locking piece 4 is provided with a cam structure 43 matched with the side of the moving frame 3. The other end of the locking piece 4 is provided with an abutting surface 44, which is abutted by the bottom of the blister sheet. The side of the other end of the locking piece 4 is provided with a guide surface 45 matched with the guide ring 22.

[0035] As shown in Figure 2 , the specific structure of the locking piece 4 is that the locking piece 4 includes a vertical section 41 and a horizontal section 42. The outer side of the base 1 is provided with a fixed block 34. The cam profile structure is arranged at one end of the vertical section 41 and is rotatably connected with the fixed block 34. When it is rotated to the locking state, the cam structure 43 strengthens the force between the locking piece 4 and the side of the base 1. The other end of the vertical section 41 is connected with one end of the horizontal section 42. The abutting surface 44 is arranged at the other end of the horizontal section 42. The guide surface 45 is arranged downwardly inclined along the abutting surface 44.

[0036] As shown in Figure 1 and Figure 2 , the bottom of the moving frame 3 is provided with a placing groove 31, which is arranged penetratingly outwardly along the horizontal direction. The placing groove 31 is recessed along the height direction of the moving frame 3. The placing groove 31 is arranged around the edge of the moving frame 3. The replacement frame 32 is arranged in the placing groove 31. The adhesive layer 33 can be double-sided adhesive tape or glue. The adhesive layer 33 is arranged at the bottom of the replacement frame 32. The placing groove 31 is matched with the horizontal section 42.

[0037] As shown in Figure 1 and Figure 2As shown, in order to improve the sealing effect between the base 1 and the fixed frame 2, an elastic sealing ring 25 is arranged between the base 1 and the fixed frame 2, the elastic sealing ring 25 is rectangular, and a pressing groove 23 is arranged on the base 1, the pressing groove 23 is recessed downward from the upper surface of the base 1, the bottom of the fixed frame 2 is provided with a pressing block 24 matched with the pressing groove 23, the pressing groove 23 is arranged outside the lower fixed hole 51, and the elastic sealing ring 25 is arranged in the pressing groove 23.

[0038] Working principle:

[0039] In use, the replacement frame 32 and the blister sheet are locked and replaced by rotating the locking part 4, the product is placed on the mesh plate 21, then the moving frame 3 is pressed downward above the base 1 together with the heated blister sheet, the blistering process is completed, then the locking part 4 is opened, the formed blister sheet is taken down, and the replacement frame 32 or new blister sheet is replaced. After use, the guide column 17 is inserted into the guide hole 16 at the corner position of the base 1, the guide hole 16 is arranged through the fixed frame 2, the mesh plate 21 and the moving frame 3, the relative fixation of the fixed frame 2, the mesh plate 21 and the moving frame 3 is ensured, and the storage is completed.

Claims

1. A blister mold for rapid plate changing, comprising a base (1) and a moving frame (3), characterized in that: The upper surface of the base (1) is provided with an opening (11), the opening (11) is recessed downward on the upper surface of the base (1) to form an air suction cavity (13), the side surface of the base (1) is provided with an air suction port (14) in communication with the air suction cavity (13), the upper surface of the base (1) is provided with a fixed frame (2), a mesh plate (21) is arranged between the fixed frame (2) and the base (1), a bolt locking portion (5) is arranged between the base (1) and the edge position of the fixed frame (2), an elastic sealing ring (25) is arranged between the base (1) and the fixed frame (2), the inner side of the fixed frame (2) extends upward to form a guide ring (22), the bottom of the moving frame (3) is provided with a replacement frame (32), the bottom of the replacement frame (32) is provided with a bonding layer (33) for bonding a blister sheet, the outer side surface of the moving frame (3) is rotatably connected with a locking piece (4), one end of the locking piece (4) is provided with a cam structure (43) matched with the side surface of the moving frame (3), the other end of the locking piece (4) is provided with an abutting surface (44) at the top for abutting the bottom of the blister sheet, and the side surface of the other end of the locking piece (4) is provided with a guide surface (45) matched with the guide ring (22).

2. The quick change blister mold of claim 1, wherein: The locking piece (4) comprises a vertical section (41) and a horizontal section (42), the outer side of the base (1) is provided with a fixed block (34), the cam structure (43) is arranged at one end of the vertical section (41) and is rotatably connected with the fixed block (34), the other end of the vertical section (41) is connected with one end of the horizontal section (42), the abutting surface (44) is arranged at the other end of the horizontal section (42), and the guide surface (45) is arranged downwardly inclined to the abutting surface (44).

3. The quick change blister mold of claim 2, wherein: The bottom of the moving frame (3) is provided with a placing groove (31), the placing groove (31) is arranged penetratingly outwardly in the horizontal direction, the placing groove (31) is recessed in the height direction of the moving frame (3), the placing groove (31) is arranged around the edge of the moving frame (3), the replacement frame (32) is arranged in the placing groove (31), the bonding layer (33) is arranged at the bottom of the replacement frame (32), and the placing groove (31) is matched with the horizontal section (42).

4. The quick change blister mold of claim 2, wherein: The bolt locking portion (5) comprises a lower fixed hole (51), a middle fixed hole (53), an upper fixed hole (54) and a locking bolt (55), the upper fixed hole (54) is arranged around the edge of the fixed frame (2), the middle fixed hole (53) is arranged on the mesh plate (21), the lower fixed hole (51) is arranged on the base (1), and the locking bolt (55) is connected with the lower fixed hole (51) after penetrating through the upper fixed hole (54) and the middle fixed hole (53) in sequence.

5. The quick change blister mold of claim 4, wherein: An internally threaded sleeve (52) is bonded in the lower fixed hole (51), and the bottom of the locking bolt (55) is threadedly connected with the internally threaded sleeve (52).

6. The quick change blister mold of claim 4, wherein: The height of the guide ring (22) is greater than the sum of the upper portion thickness of the locking bolt (55) and the thickness of the horizontal section (42).

7. The quick change blister mold of claim 5, wherein: The base (1) is provided with a pressing groove (23) which is recessed downward from the upper surface of the base (1), the bottom of the fixed frame (2) is provided with a pressing block (24) matched with the pressing groove (23), the pressing groove (23) is arranged outside the lower fixed hole (51), and the elastic sealing ring (25) is arranged in the pressing groove (23).

8. The quick change blister mold of claim 1, wherein: The base (1) is provided with an air path partition plate (12) in the air suction cavity (13), the air path partition plate (12) is arranged at intervals in the air suction cavity (13), the air suction port (14) is arranged on one side of the length direction of the base (1), the air suction sleeve (15) is arranged in the air suction port (14), and the outer end of the air suction sleeve (15) extends to the outside of the base (1).

9. The quick change blister mold of claim 8, wherein: The base (1) is provided with a guide hole (16) at the corner position, the guide hole (16) is arranged through the fixed frame (2), the mesh plate (21) and the moving frame (3), and the guide column (17) is slidably connected in the guide hole (16).

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