Multi-model acrylic product forming mold

Abstract

The utility model relates to the technical field of acrylic forming, in particular to a multi-model acrylic product forming die which comprises a lower die and an upper die, wherein the lower mold comprises a plastic uptake unit and a hot bending unit which are connected with each other; the plastic uptake unit comprises a mold cavity, and the mold cavity is connected with a vacuum generation device through a pipeline; the upper die is matched with the lower die, and the upper die is detachably connected with the lower die. According to the multi-model acrylic product forming mold provided by the utility model, the mold is provided with the plastic uptake unit and the hot bending unit which are connected with each other, so that plastic uptake forming and hot bending forming can be simultaneously realized through one-time heating, the heating times are reduced, the problem that a multi-model acrylic product is easy to yellow in the prior art is solved, and the production efficiency is improved. And the surface of the workpiece is high in flatness, free of seam marks and low in energy consumption, so that the quality of the workpiece is improved, and meanwhile, the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of acrylic forming, in particular to a forming mold for multi-shaped acrylic products. Background Art

[0002] Due to its excellent light transmittance and anti-aging performance, acrylic has been widely used in the fields of industry, architecture, home furnishing, etc. With the application of acrylic materials, there are more and more multi-shaped acrylic products.

[0003] At present, multi-shaped acrylic products, such as washbasins, usually include grooves and curved surface structures at the same time. Since the groove structure is manufactured by thermoforming, and the curved surface structure needs to be manufactured by hot bending, therefore, the existing forming of multi-shaped acrylic products needs to be carried out in two processes of thermoforming and hot bending, resulting in the product being heated twice or even more times, making the product prone to yellowing, and the defective rate of the product is relatively high. Summary of the Utility Model

[0004] In order to solve the problem that multi-shaped acrylic products in the prior art are prone to yellowing, the utility model provides a forming mold for multi-shaped acrylic products. By improving the mold, the two processes of thermoforming and hot bending are carried out simultaneously, so that the forming can be completed by one heating, reducing the number of heating times, and solving the problem that multi-shaped acrylic products in the prior art are prone to yellowing.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A forming mold for multi-shaped acrylic products, including a lower mold and an upper mold; wherein,

[0007] The lower mold includes a thermoforming unit and a hot bending unit connected together;

[0008] The thermoforming unit includes a mold cavity, and the mold cavity is connected to a vacuum generating device through a pipeline;

[0009] The upper mold is adapted to the lower mold, and the upper mold and the lower mold are detachably connected.

[0010] Optionally, the hot bending unit includes a semi-circular mold core.

[0011] Optionally, the mold core includes an upper mold core and a lower mold core; the upper mold core is fixedly connected to the thermoforming unit; the lower mold core is slidably connected to the upper mold core along the length direction.

[0012] Optionally, the height of the lower mold core is not less than the depth of the mold cavity.

[0013] Optionally, a first sliding groove and / or a first sliding block are / is provided on the lower surface of the upper die core; a second sliding block and / or a second sliding groove adapted to the first sliding groove and / or the first sliding block are / is provided on the upper surface of the lower die core.

[0014] Optionally, anti - detachment bumps are provided at the outer ends of the first sliding block and the second sliding block.

[0015] Optionally, a positioning plate is provided inside the lower die core.

[0016] Optionally, a positioning groove adapted to the positioning plate is provided inside the upper die core.

[0017] Optionally, the hot - bending unit includes a cylinder connected to the lower die core.

[0018] The beneficial effects of the present utility model are as follows:

[0019] The multi - shaped acrylic product forming mold provided by the present utility model, by setting the mold as a connected plastic - suction unit and hot - bending unit, enables the simultaneous realization of plastic - suction forming and hot - bending forming through one - time heating, reducing the number of heating times. It not only solves the problem that multi - shaped acrylic products are prone to yellowing in the prior art, but also has a high surface flatness of the workpiece, no seam marks, and low energy consumption. Thus, while improving the quality of the workpiece, the cost is reduced. Description of the Drawings

[0020] The following further describes the present utility model in conjunction with the drawings and embodiments.

[0021] Figure 1 is the assembly of the multi - shaped acrylic product forming mold and the workpiece in the present utility model Figure 1 ;

[0022] Figure 2 is the explosion of the multi - shaped acrylic product forming mold in the present utility model Figure 1 ;

[0023] Figure 3 is the assembly of the multi - shaped acrylic product forming mold and the workpiece in the present utility model Figure 2 ;

[0024] Figure 4 is the explosion of the multi - shaped acrylic product forming mold in the present utility model Figure 2 ;

[0025] Figure 5 is Figure 4 the partial enlarged view of the A position in

[0026] In the figure: 1 - lower mold; 11 - thermoforming unit; 111 - mold cavity; 12 - hot bending unit; 121 - upper mold core; 1211 - first sliding groove; 1212 - first slider; 1213 - positioning groove; 1214 - first anti - detachment bump; 122 - lower mold core; 1221 - second slider; 1222 - second sliding groove; 1223 - positioning plate; 1224 - second anti - detachment bump; 2 - upper mold; 3 - bracket; 4 - multi - shaped acrylic product. Detailed implementation manners

[0027] Now, the present utility model will be further described in detail. The embodiments described below are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0028] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for simplifying the description and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0029] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the first feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0030] To make the above - mentioned objects, features and advantages of the present utility model more obvious and understandable, the specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0031] Currently, for the preparation of multi - shaped acrylic products, such as washbasins, since it is necessary to carry out two processes of thermoforming and hot bending, not only is the product prone to yellowing, but also the surface flatness control of the product is poor, and the traces at the joints of mold pressing and blow molding are obvious, affecting the appearance effect; in addition, the conventional product blanking size needs to consider the allowance for two - time forming, resulting in a relatively high cost of sheet material and large energy consumption.

[0032] To solve the problem that multi-shaped acrylic products in the prior art are prone to yellowing due to the relatively large number of manufacturing process steps, the present utility model provides a forming mold for multi-shaped acrylic products. Refer to Figures 1 - 5 As shown, the mold includes a lower mold 1 and an upper mold 2 that are adapted to each other; among them, the lower mold 1 includes a plastic suction unit 11 and a hot bending unit 12 connected to each other; the plastic suction unit 11 includes a mold cavity 111, and the shape and size of the mold cavity 111 can be determined according to product requirements; for this application, it is preferred that the shape and size of the mold cavity 111 are determined according to the shape and size of the washbasin in the washstand; to facilitate the plastic suction process, the mold cavity 111 is connected to a vacuum generating device (not shown in the figure) through a pipeline; the hot bending unit 12 is used to complete the hot bending process, and its shape and size are also determined according to product requirements; the upper mold 2 in the present utility model is adapted to the lower mold 1, and the upper mold 2 and the lower mold 1 are detachably connected, so as to complete the forming of the product by the cooperation of the upper mold 2 and the lower mold 1.

[0033] During the use of the forming mold for multi-shaped acrylic products, first place the acrylic sheet above the mold, heat it until the acrylic sheet deforms, and then evacuate the mold cavity 111 through the vacuum generating device, so that the acrylic sheet sinks into the mold cavity 111 to realize the plastic suction forming of the groove. At the same time, the upper mold 2 and the lower mold 1 are closed to realize the hot bending forming.

[0034] The forming mold for multi-shaped acrylic products provided by the present utility model sets the mold as a connected plastic suction unit 11 and a hot bending unit 12, so that the plastic suction forming and the hot bending forming can be realized simultaneously through one heating, reducing the number of heating times. It not only solves the problem that multi-shaped acrylic products in the prior art are prone to yellowing, but also has a high surface flatness of the workpiece, no joint marks, and low energy consumption, thus improving the quality of the workpiece while reducing the cost.

[0035] The hot bending unit 12 includes a mold core for hot bending forming, and the specific shape and size of the mold core are determined according to product requirements. For example, it can be an L-shaped or L-shaped-like structure; for a mold with an L-shaped or L-shaped-like mold core, during the demolding process, the upper mold 2 can be directly moved upward, which is easy to operate.

[0036] To improve the aesthetic appearance of the product, the present utility model preferably includes a semi-circular mold core in the hot bending unit 12.

[0037] For a mold with a semi-circular mold core structure, since the multi-shaped acrylic product 4 includes a groove, the demolding difficulty is relatively large; to realize demolding, the present utility model preferably does not provide a straight edge section at the lower end of the multi-shaped acrylic product 4, or the width of the straight edge section is less than 70 mm, so that during the demolding process, it can be directly lifted upward, or the entire multi-shaped acrylic product 4 can be obliquely taken out after slightly lifting the groove end upward to a certain extent.

[0038] Furthermore, to ensure smooth demolding, the mold core of the present utility model preferably includes an upper mold core 121 and a lower mold core 122; wherein the upper mold core 121 is fixedly connected to the thermoforming unit 11, or the upper mold core 121 and the thermoforming unit 11 are of an integral structure; the lower mold core 122 is slidably connected to the upper mold core 121 in the length direction. It should be noted that the length herein refers to the direction along which the thermoforming unit 11 is connected to the thermoforming unit 12.

[0039] By setting the mold core to a structure in which the lower mold core 122 is slidably connected to the upper mold core 121 in the length direction, during the molding process, the lower mold core 122 is moved away from the thermoforming unit 11, so that the lower mold core 122 and the upper mold core 121 are assembled to form a mold core suitable for thermoforming; when demolding is required, the lower mold core 122 is moved towards the thermoforming unit 11, so that there is a certain gap between the lower part of the upper mold core 121 and the multi-shaped acrylic product 4. Then, the multi-shaped acrylic product 4 is lifted upwards, so that after the groove in the multi-shaped acrylic product 4 is removed from the mold cavity 111, the multi-shaped acrylic product 4 can be removed from the side.

[0040] To ensure smooth demolding, the present utility model further preferably sets the height of the lower mold core 122 to be not less than the depth of the mold cavity 111, so as to ensure that during the process of lifting the multi-shaped acrylic product 4 upwards, the groove in the multi-shaped acrylic product 4 can be removed from the mold cavity 111.

[0041] To realize the sliding connection between the lower mold core 122 and the upper mold core 121, the present utility model preferably provides a first sliding groove 1211 and / or a first sliding block 1212 on the lower surface of the upper mold core 121; a second sliding block 1221 and / or a second sliding groove 1222 adapted to the first sliding groove 1211 and / or the first sliding block 1212 is provided on the upper surface of the lower mold core 122.

[0042] Furthermore, to realize the stability of the connection between the lower mold core 122 and the upper mold core 121, the present utility model preferably provides anti-disengagement convex blocks at the outer ends of the first sliding block 1212 and the second sliding block 1221. Correspondingly, anti-disengagement grooves adapted to the anti-disengagement convex blocks are provided in the sliding groove; specifically, a first anti-disengagement convex block 1214 is provided at the outer end of the first sliding block 1212, and a second anti-disengagement convex block 1224 is provided at the outer end of the second sliding block 1221; it should be noted that the outer end of the first sliding block 1212 refers to the end of the first sliding block 1212 far from the upper mold core 121; the outer end of the second sliding block 1221 refers to the end of the second sliding block 1221 far from the lower mold core 122.

[0043] Furthermore, to ensure that the lower die core 122 and the upper die core 121 are assembled to form a die core suitable for hot bending forming, the present utility model preferably provides a positioning plate 1223 on the inner side of the lower die core 122. When the lower die core 122 is moved to the side away from the thermoforming unit 11 to be assembled with the upper die core 121 to form a die core suitable for hot bending forming, the positioning plate 1223 abuts against the upper die core 121 to prevent the further movement of the lower die core 122 and achieve positioning.

[0044] To improve the aesthetic appearance of the mold, the present utility model further preferably provides a positioning groove 1213 adapted to the positioning plate 1223 on the inner side of the upper die core 121. When the lower die core 122 and the upper die core 121 are assembled to form a die core suitable for hot bending forming, the positioning plate 1223 is installed in the positioning groove 1213 to ensure the flatness of the mold surface.

[0045] To reduce the operation difficulty, the present utility model further preferably provides that the hot bending unit 12 includes a cylinder (not shown in the figure) connected to the lower die core 122, so as to drive the lower die core 122 to move along the length direction through the cylinder.

[0046] To facilitate the movement of the lower die core 122, the present utility model preferably provides that the multi-shaped acrylic product forming mold further includes a bracket 3. The lower die 1 is placed on the bracket 3, and the width of the bracket 3 is greater than the width of the lower die 1, so that the lower die core 122 can slide through the through holes on the legs of the bracket 3.

[0047] Taking the above ideal embodiments according to the present utility model as an inspiration, through the above description, relevant workers can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A multi-shaped acrylic product forming mold, characterized in that: It comprises a lower mold (1) and an upper mold (2); wherein, The lower mold (1) comprises a connected suction molding unit (11) and a hot bending unit (12); The vacuum forming unit (11) comprises a mold cavity (111), and the mold cavity (111) is connected to a vacuum generating device via a pipeline; The upper mold (2) is adapted to the lower mold (1), and the upper mold (2) and the lower mold (1) are detachably connected.

2. The multi-shaped acrylic product forming mold according to claim 1, characterized in that: The hot bending unit (12) comprises a semicircular mold core.

3. The multi-shaped acrylic product forming mold according to claim 2, characterized in that: The mold core comprises an upper mold core (121) and a lower mold core (122); the upper mold core (121) is fixedly connected to the blister unit (11); and the lower mold core (122) is slidably connected to the upper mold core (121) along the length direction.

4. The multi-shaped acrylic product forming mold according to claim 3, characterized in that: The height of the lower mold core (122) is not less than the depth of the mold cavity (111).

5. The multi-shaped acrylic product forming mold according to claim 3, characterized in that: The lower surface of the upper mold core (121) is provided with a first slide groove (1211) and / or a first slider (1212); the upper surface of the lower mold core (122) is provided with a second slider (1221) and / or a second slide groove (1222) adapted to the first slide groove (1211) and / or the first slider (1212).

6. The multi-shaped acrylic product forming mold according to claim 5, characterized in that: The outer ends of the first sliding block (1212) and the second sliding block (1221) are both provided with anti-dropping protrusions.

7. The multi-shaped acrylic product forming mold according to claim 3, characterized in that: A positioning plate (1223) is provided on the inner side of the lower mold core (122).

8. The multi-shaped acrylic product forming mold according to claim 7, characterized in that: A positioning groove (1213) adapted to the positioning plate (1223) is provided on the inner side of the upper mold core (121).

9. The multi-shaped acrylic product forming mold according to claim 3, characterized in that: The hot bending unit (12) comprises a cylinder connected to the lower mold core (122).

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