Full-automatic rotational molding rotary forming device

Abstract

The utility model relates to the technical field of rotational molding, in particular to a full-automatic rotational molding rotary molding device which comprises a base and a molding device, a lower box body is arranged on the base; the forming device comprises a first mold, a second mold hinged to the first mold, a first fixing block and a second fixing block which are arranged on the first mold and the second mold respectively, a connecting shaft and a clamping block which are arranged on the first fixing block, and a driving assembly for driving the connecting shaft to rotate, and the connecting shaft penetrates through the lower box body and is rotationally connected with the lower box body; the second fixing block is provided with a groove for the clamping block to be embedded. According to the utility model, the structure is simple, the workpiece can be prevented from being adhered to the die cavity, the forming speed of the workpiece can be increased, and the processing efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotational molding, in particular to a full-automatic rotational molding device for rotational molding. Background Art

[0002] Rotational molding, also known as rotomolding, rotational molding or rotational casting, is a method for hollow molding of thermoplastic plastics. In this molding method, plastic raw materials are added into a mold, and the mold is rotated after being closed. Under the action of gravity and heat energy, the plastic raw materials are gradually and evenly coated, melted and adhered to the entire surface of the mold cavity to form the required shape. After cooling and solidification, the mold is opened and the molded plastic product is taken out.

[0003] Chinese Patent Publication No. CN208881010U discloses a rotational molding device, including a bottom plate. A lower hydraulic telescopic rod is provided at the center of the top of the bottom plate. The top of the lower hydraulic telescopic rod is fixedly connected with a lower mold. An anti-adhesion layer is movably connected to the bottom of the inner cavity of the lower mold. Guide columns are symmetrically inserted into the left and right sides of the bottom of the inner cavity of the lower mold. Lower movable blocks are symmetrically arranged at the left and right sides of the bottom of the lower mold. Lower telescopic rods are symmetrically arranged at the left and right sides of the bottom of the bottom plate. The tops of the two groups of telescopic rods are fixedly connected with a first electric telescopic rod. Support rods are symmetrically fixedly connected to the left and right sides of the top of the bottom plate. A connecting plate is fixedly connected to the top of the support rod. An upper hydraulic telescopic rod is fixedly connected to the center of the top of the connecting plate. The telescopic end of the upper hydraulic telescopic rod is fixedly connected with an upper mold. Movable sleeve plates are symmetrically fixedly connected to the left and right sides of the upper mold. Movable rods are symmetrically fixedly connected to the left and right sides of the top of the bottom plate. This device solves the problems of low rotational molding efficiency, adhesion of the molten solution to the surface of the mold cavity and difficult demolding.

[0004] However, the above technical solution has the following deficiencies: Although the device can avoid the adhesion of workpieces to the mold cavity through the provided anti-adhesion layer, during the process of workpiece molding, due to the lack of a cooling device, the cooling and molding rate of the workpiece is greatly reduced, thereby affecting the processing efficiency. Moreover, there are multiple hydraulic telescopic rods and electric telescopic rods in this device, resulting in a high assembly cost. Summary of the Utility Model

[0005] The purpose of the utility model is to address the problems in the background art and propose a full-automatic rotational molding device for rotational molding. While having a simple structure, it can not only avoid the adhesion of workpieces to the mold cavity, but also accelerate the molding rate of workpieces, thereby improving the processing efficiency.

[0006] The technical solution of the present utility model is an automatic rotational molding device, which includes a base and a molding device; a lower box body is arranged on the base; the molding device includes a first mold, a second mold hinged to the first mold, a first fixing block and a second fixing block respectively arranged on the first mold and the second mold, a connecting shaft and a clamping block arranged on the first fixing block, and a driving component for driving the connecting shaft to rotate. The connecting shaft penetrates through the lower box body and is rotatably connected to the lower box body. A groove for the clamping block to fit into is arranged on the second fixing block.

[0007] Preferably, two symmetrically distributed mounting plates are arranged on both the first mold and the second mold, and threaded holes for bolts to screw into are arranged on the mounting plates.

[0008] Preferably, a convex block is arranged on the base. The driving component includes a motor arranged on the convex block and two stabilizing frames vertically distributed on the base. The two connecting shafts are respectively rotatably connected to the stabilizing frames, and the motor is drivingly connected to one of the connecting shafts.

[0009] Preferably, anti-sticking layers are arranged inside both the first mold and the second mold.

[0010] Preferably, a support frame is arranged on the base, an upper box body is arranged above the lower box body, and a cooling component is arranged on the upper box body. The cooling component includes a shunt cylinder arranged on the upper box body, a plurality of nozzles linearly distributed above the first mold and communicated with the shunt cylinder, a water tank arranged on the support frame, and a conduit for connecting the water tank and the shunt cylinder.

[0011] Preferably, two heating tubes are arranged inside the upper box body.

[0012] Preferably, a lifting mechanism is arranged on the support frame. The lifting mechanism includes a cylinder vertically distributed on the support frame and a connecting rod drivingly connected to the cylinder. The upper box body is arranged on the connecting rod.

[0013] Compared with the prior art, the present utility model has the following beneficial technical effects:

[0014] 1. By arranging the hinged first mold and second mold, and cooperating with the first fixing block, the second fixing block and the clamping block, the present utility model realizes rapid mold closing with a simple structure, and can also ensure the stability of the mold rotation during rotational molding processing.

[0015] 2. By arranging the cooling component, the present utility model can quickly cool down the raw materials that have been evenly coated on the inner walls of the first mold and the second mold, accelerate the molding rate of processing, and thus improve the production efficiency, with good practicability. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the lower box body;

[0018] Figure 3 It is an unfolded schematic diagram of the first mold and the second mold;

[0019] Figure 4 It is an axonometric schematic diagram of the upper mold.

[0020] Reference numerals: 1, base; 2, lower box body; 3, first mold; 4, second mold; 5, fixing block; 6, connecting shaft; 7, clamping block; 8, mounting plate; 9, anti-sticking layer; 10, placing seat; 11, motor; 12, stabilizing frame; 13, upper box body; 14, shunt cylinder; 15, spray head; 16, heating pipe; 17, support frame; 18, cylinder; 19, connecting rod; 20, water tank; 21, conduit. Detailed implementation manners

[0021] Embodiment 1

[0022] As Figures 1-4 shown, a fully automatic rotational molding device proposed in this embodiment includes a base 1 and a molding device; a lower box body 2 is arranged on the base 1.

[0023] As Figures 1-3 shown, the molding device includes a first mold 3, a second mold 4 hinged to the first mold 3, a first fixing block 5 and a second fixing block 8 respectively arranged on the first mold 3 and the second mold 4, a connecting shaft 6 and a clamping block 7 arranged on the first fixing block 5, and a driving assembly for driving the connecting shaft 6 to rotate. The connecting shaft 6 penetrates through the lower box body 2 and is rotatably connected to the lower box body 2. A groove for the clamping block 7 to fit into is arranged on the second fixing block 8. When designing the groove, it is necessary to ensure that when the second fixing block 8 rotates following the second mold 8, the edge of the clamping block 7 will not block the rotation of the second fixing block 8. Anti-sticking layers 10 are arranged inside both the first mold 3 and the second mold 4. The anti-sticking layers 10 can prevent the workpiece from adhering to the inner side of the mold and being difficult to take out when demolding.

[0024] As Figure 2 shown, two symmetrically distributed mounting plates 9 are arranged on both the first mold 3 and the second mold 4. Threaded holes for bolts to be screwed into are arranged on the mounting plates 9. After the molten solution is added into the first mold 3, the second mold 8 is rotated and the first mold 3 and the second mold 8 are closed through the mounting plates 9 and fixing bolts.

[0025] A convex block is arranged on the base 1. The driving assembly includes a motor 11 arranged on the convex block and two stabilizing frames 12 vertically distributed on the base 1. The two connecting shafts 6 are respectively rotatably connected to the stabilizing frames 12. The motor 11 is drivingly connected to one of the connecting shafts 6.

[0026] After the molten solution is added and the mold is closed, the motor 11 is started to drive the connecting shaft 6 to rotate. The connecting shaft 6 drives the first fixing block 5 and the second fixing block 8 to rotate, and cooperates with the clamping block 7 to make the first mold 3 and the second mold 4 rotate. Thus, the raw materials are gradually and evenly coated and melt-adhered to the inner walls of the first mold 3 and the second mold 4 until they are formed. The mold closing operation is simple and convenient.

[0027] Embodiment 2

[0028] As Figure 1 and Figure 4 As shown, a fully automatic rotational molding device proposed in this embodiment, compared with Embodiment 1, in this embodiment, a support frame 17 is provided on the base 1, and the support frame 17 is used to support the rotation of the connecting shaft 6. An upper box body 13 is provided above the lower box body 2, and a cooling component is provided on the upper box body 13. The cooling component includes a shunt tube 14 provided on the upper box body 13, a plurality of spray heads 15 linearly distributed above the first mold 3 and communicated with the shunt tube 14, a water tank 20 provided on the support frame 17, and a conduit 21 for communicating the water tank 20 with the shunt tube 14.

[0029] In this embodiment, when the workpiece is processed for a certain period of time, the cooling water is conveyed by the water pump in the water tank 20. Under the action of the conduit 21, the cooling water enters the shunt tube 14 and sprays out from the spray heads 15 to cool the surfaces of the first mold 3 and the second mold 4. Thus, the workpiece is quickly cooled and shaped, improving the processing rate of the workpiece, and having good practicability.

[0030] Embodiment 3

[0031] As Figure 1 and Figure 4 As shown, a fully automatic rotational molding device proposed in this embodiment, compared with Embodiment 1, in this embodiment, two heating tubes 16 are provided inside the upper box body 13, and a lifting mechanism is provided on the support frame 17. The lifting mechanism includes a cylinder 18 vertically distributed on the support frame 17 and a connecting rod 19 drivingly connected to the cylinder 18, and the upper box body 13 is provided on the connecting rod 19.

[0032] In this embodiment, when rotational molding is carried out, the inside of the box body can be heated by the heating tubes 16 to prevent the raw materials from cooling too quickly and affecting the molding quality of the workpiece. When the workpiece processing is completed, the cylinder 18 is started to drive the upper box body 13 to rise, and then the mold can be opened to take out the molded workpiece.

[0033] The above has described in detail the embodiments of the present invention in conjunction with the drawings. However, the present invention is not limited to this. Various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art to which the present invention pertains.

Claims

1. A fully automatic rotational molding device, characterized in that: include: A base (1) on which a lower box (2) is arranged; The molding device comprises a first mold (3), a second mold (4) hinged to the first mold (3), a first fixed block (5) and a second fixed block (8) respectively arranged on the first mold (3) and the second mold (4), a connecting shaft (6) and a clamping block (7) arranged on the first fixed block (5), and a driving component for driving the connecting shaft (6) to rotate, wherein the connecting shaft (6) passes through a lower box body (2) and is rotationally connected to the lower box body (2), and the second fixed block (8) is provided with a groove for the clamping block (7) to be engaged.

2. A fully automatic rotational molding device according to claim 1, characterized in that: The first mold (3) and the second mold (4) are both provided with two symmetrically distributed mounting plates (9), and the mounting plates (9) are provided with threaded holes for bolts to be screwed into.

3. A fully automatic rotational molding device according to claim 1, characterized in that: A convex block is arranged on the base (1), and the driving assembly comprises a motor (11) arranged on the convex block and two stabilizing frames (12) vertically distributed on the base (1), two connecting shafts (6) are respectively rotatably connected to the stabilizing frames (12), and the motor (11) is drivingly connected to the connecting shaft (6) on one side.

4. The fully automatic rotational molding device according to claim 1, characterized in that: Anti-sticking layers (10) are provided inside the first mold (3) and the second mold (4).

5. The fully automatic rotational molding device according to claim 1, characterized in that: A support frame (17) is arranged on the base (1), an upper box body (13) is arranged above the lower box body (2), and a cooling component is arranged on the upper box body (13), the cooling component comprising a diversion cylinder (14) arranged on the upper box body (13), a plurality of nozzles (15) linearly distributed above the first mold (3) and connected to the diversion cylinder (14), a water tank (20) arranged on the support frame (17), and a conduit (21) for connecting the water tank (20) and the diversion cylinder (14).

6. A fully automatic rotational molding device according to claim 5, characterized in that: Two heating tubes (16) are arranged inside the upper box (13).

7. The fully automatic rotational molding device according to claim 5, characterized in that: A lifting mechanism is arranged on the support frame (17), the lifting mechanism comprising a cylinder (18) vertically distributed on the support frame (17) and a connecting rod (19) drivingly connected to the cylinder (18), and the upper box body (13) is arranged on the connecting rod (19).

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