A rotomolding mold fixing fastener

Abstract

The utility model relates to rotomolding mould installation technical field, concretely is a kind of rotomolding mould fixed fastener, including upper fastener and lower fastener, the upper fastener is cylindrical structure, the inner top surface of upper fastener is rotatably connected with gear, the lower part of gear is equipped with positioning member and several side rods, the side rod is opened with helical through slot, the outside of upper fastener is equipped with clamping piece. This kind of rotomolding mould fixed fastener, insert lower fastener into upper fastener, so that positioning member inserts positioning hole, realize the synchronous rotation of gear and lower fastener, utilize the stability in the rotation process that side rod inserts into butt joint hole can be promoted, reduce rotation torque, improve the service life of this fastener, in addition, positioning member and side rod are all equipped with through slot, reduce the air compression resistance in the process of installation insertion.

Description

Technical Field

[0001] This utility model relates to the field of rotational molding mold installation technology, specifically a rotational molding mold fixing fastener. Background Technology

[0002] Rotational molding is a molding process that uses biaxial rotational heating to produce hollow plastic products. It is especially suitable for producing large, complex and seamless plastic parts. However, because rotational molding molds are usually large, maintenance and replacement are more troublesome if they are fixed to the rotating components.

[0003] To address the aforementioned issues, we have made improvements and proposed a rotational molding die fixing fastener. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] This utility model provides a fixing fastener for rotational molding mold, including an upper fastener and a lower fastener. The upper fastener has a cylindrical structure, and a gear is rotatably connected to the inner top surface of the upper fastener. A positioning element and several side rods are installed at the lower part of the gear. The side rods have spiral through grooves. A clip is installed on the outside of the upper fastener.

[0006] The lower fastener is inserted inside the upper fastener. The outer surface of the lower fastener has an annular groove. The bottom of the lower fastener has an arc-shaped limiting cavity. The top of the lower fastener has a docking hole and a positioning hole that correspond one-to-one with the side rod and the positioning part. A spring is installed on the inner bottom surface of the docking hole.

[0007] As a preferred technical solution of this utility model, the positioning member is configured as a cross shape, the positioning member is located at the center of the gear, a plurality of side rods are arranged around the positioning member, the top of the plurality of side rods are fixedly connected to the gear, a servo motor is installed on the outer top surface of the upper fastener, the rotation shaft of the servo motor is coaxially fixedly connected to the gear, and the positioning member is coaxially fixedly connected to the gear.

[0008] As a preferred technical solution of this utility model, the upper fastener has slots on both sides, the top of the fastener is connected to the slots by bolts, and the bottom of the fastener is fitted with a plug, which is slidably connected to the slide groove.

[0009] As a preferred embodiment of this utility model, the side rod is inserted into the docking hole, the positioning member is inserted into the positioning hole, and the positioning member has a through-venting groove inside.

[0010] As a preferred embodiment of this utility model, the inner surface of the limiting cavity is in contact with the top or bottom of the rotational molding die, and the inner surface of the limiting cavity is provided with a thickened pad for increasing friction.

[0011] As a preferred technical solution of this utility model, the top of the upper fastener and the gear are both provided with several ventilation holes.

[0012] The beneficial effects of this utility model are: the fixed fastener of this rotational molding mold, by inserting the lower fastener into the upper fastener, so that the positioning part is inserted into the positioning hole, realizes the synchronous rotation of the gear and the lower fastener. The side rod inserted into the docking hole can improve the stability during the rotation process, reduce the rotation torque, and improve the service life of the fastener. In addition, the positioning part and the side rod are provided with through grooves to reduce the air compression resistance during the installation and insertion process.

[0013] The upper and lower fasteners are connected by clips on both sides, which makes the installation stable and easy to disassemble. During maintenance, only the lower fastener needs to be removed, avoiding the complete disassembly of the rotational molding device and improving operating efficiency. The two lower fasteners clamp the upper and lower ends of the rotational molding mold towards the center. The limiting cavity and thickened pad improve the stability of the connection, allowing the upper and lower fasteners of the rotational molding mold to rotate simultaneously to complete the rotational molding process. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the upper overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the lower overall structure of this utility model;

[0017] Figure 3 This is a partial structural diagram of the upper fastener of this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the upper fastener of this utility model;

[0019] Figure 5 This is a schematic cross-sectional view of the lower fastener of this utility model;

[0020] In the diagram: 1. Upper fastener; 2. Lower fastener; 3. Clip; 4. Servo motor; 5. Vent hole; 6. Slide groove; 7. Bolt; 8. Limiting cavity; 9. Thickened pad; 10. Insert block; 11. Side rod; 12. Positioning component; 13. Slot; 14. Gear; 15. Connecting hole; 16. Spring; 17. Positioning hole. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] Example: Figure 1-5 As shown, a rotational molding die fixing fastener includes an upper fastener 1 and a lower fastener 2. The upper fastener 1 has a cylindrical structure. A gear 14 is rotatably connected to the inner top surface of the upper fastener 1. A positioning part 12 and several side rods 11 are installed at the lower part of the gear 14. The side rods 11 have spiral through grooves to reduce insertion resistance. A clip 3 is installed on the outside of the upper fastener 1.

[0023] The lower fastener 2 is inserted into the interior of the upper fastener 1. The outer surface of the lower fastener 2 is provided with an annular groove 6. The bottom of the lower fastener 2 is provided with an arc-shaped limiting cavity 8. The top of the lower fastener 2 is provided with a docking hole 15 and a positioning hole 17 corresponding to the side rod 11 and the positioning part 12. A spring 16 is installed on the inner bottom surface of the docking hole 15.

[0024] The positioning element 12 is set in a cross shape and is located at the center of the gear 14. Several side rods 11 are arranged around the positioning element 12, and the top of the side rods 11 are fixedly connected to the gear 14. A servo motor 4 is installed on the outer top surface of the upper fastener 1. The rotation shaft of the servo motor 4 is fixedly connected to the gear 14 coaxially. The positioning element 12 is fixedly connected to the gear 14 coaxially.

[0025] Servo motor 4 drives gear 14 to rotate, thereby causing side rod 11 and positioning member 12 to rotate around positioning member 12. During this process, side rod 11 increases the transmission of rotational force, reduces the torque on positioning member 12, and extends the overall service life of upper fastener 1.

[0026] The upper fastener 1 has slots 13 on both sides. The top of the fastener 3 is connected to the slots 13 by bolts 7. The bottom of the fastener 3 is fitted with a plug 10. The plug 10 is slidably connected to the slide groove 6. After the lower fastener 2 is inserted into the upper fastener, the fastener 3 is connected to the upper fastener 1 by bolts 7. At this time, the plug 10 is inserted into the slide groove 6. When the gear 14 drives the lower fastener 2 to rotate, the fastener 3 slides along the slide groove 6.

[0027] The side rod 11 is inserted into the docking hole 15, and the positioning member 12 is inserted into the positioning hole 17. The positioning member 12 has a ventilation groove that runs through it from top to bottom. When the positioning member 12 is inserted into the positioning hole 17, the air inside the positioning hole 17 is discharged along the positioning hole 17 to avoid causing resistance to the insertion of the positioning member 12.

[0028] The inner surface of the limiting cavity 8 contacts the top or bottom of the rotational molding mold. The inner surface of the limiting cavity 8 is provided with a thickened pad 9 to increase friction and improve the friction between the limiting cavity 8 and the rotational molding mold.

[0029] Several ventilation holes 5 are provided on the top of the upper fastener 1 and on the gear 14.

[0030] Working principle: In use, the lower fastener 2 is inserted into the upper fastener 1, allowing the positioning part 12 to be inserted into the positioning hole 17, thus achieving synchronous rotation of the gear 14 and the lower fastener 2. The side rod 11 is inserted into the docking hole 15, which improves the stability during rotation, reduces the rotational torque, and extends the service life of the fastener. In addition, both the positioning part 12 and the side rod 11 are provided with through grooves to reduce the air compression resistance during installation and insertion. The upper fastener 1 and the lower fastener 2 are connected by the clamps 3 on both sides, which makes the installation stable and easy to disassemble. During maintenance, only the lower fastener 2 needs to be removed, avoiding the complete disassembly of the rotational molding device and improving operational efficiency. The two lower fasteners 2 clamp the upper and lower ends of the rotational molding mold towards the center. The limiting cavity 8 and the thickened pad 9 enhance the stability of the connection, allowing the upper and lower fasteners of the rotational molding mold to rotate simultaneously, completing the rotational molding process.

[0031] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fixing fastener for rotational molding, comprising an upper fastener (1) and a lower fastener (2), characterized in that, The upper fastener (1) is a cylindrical structure. A gear (14) is rotatably connected to the inner top surface of the upper fastener (1). A positioning part (12) and several side rods (11) are installed on the lower part of the gear (14). The side rods (11) have spiral through grooves. A clip (3) is installed on the outside of the upper fastener (1). The lower fastener (2) is inserted inside the upper fastener (1). The outer surface of the lower fastener (2) is provided with an annular groove (6). The bottom of the lower fastener (2) is provided with an arc-shaped limiting cavity (8). The top of the lower fastener (2) is provided with a docking hole (15) and a positioning hole (17) corresponding to the side rod (11) and the positioning member (12). A spring (16) is installed on the inner bottom surface of the docking hole (15).

2. The rotational molding die fixing fastener according to claim 1, characterized in that, The positioning element (12) is set in a cross shape and is located at the center of the gear (14). Several side rods (11) are arranged around the positioning element (12). The top of several side rods (11) is fixedly connected to the gear (14). A servo motor (4) is installed on the outer top surface of the upper fastener (1). The rotation shaft of the servo motor (4) is fixedly connected to the gear (14) on the same axis. The positioning element (12) is fixedly connected to the gear (14) on the same axis.

3. A rotational molding die fixing fastener according to claim 1, characterized in that, The upper fastener (1) has slots (13) on both sides. The top of the fastener (3) is connected to the slots (13) by bolts (7). The bottom of the fastener (3) is fitted with a plug (10), which is slidably connected to the slide groove (6).

4. A rotational molding die fixing fastener according to claim 1, characterized in that, The side rod (11) is inserted into the docking hole (15), the positioning member (12) is inserted into the positioning hole (17), and the positioning member (12) has a ventilation groove that runs through it from top to bottom.

5. A rotational molding die fixing fastener according to claim 1, characterized in that, The inner surface of the limiting cavity (8) is in contact with the top or bottom of the rotational molding die, and the inner surface of the limiting cavity (8) is provided with a thickened pad (9) for increasing friction.

6. A rotational molding die fixing fastener according to claim 1, characterized in that, The top of the upper fastener (1) and the gear (14) are provided with several ventilation holes (5).

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