CN210940117U

CN210940117U - Rapid mounting bolt for rotational molding insert

Info

Publication number: CN210940117U
Application number: CN201921790752.7U
Authority: CN
Inventors: 覃伟; 吴晓涛
Original assignee: Dongguan Ym Cleaning Products Co ltd
Current assignee: Dongguan Ym Cleaning Products Co ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-07-07
Anticipated expiration: 2029-10-23

Abstract

The utility model discloses a rotational molding insert rapid installation bolt, which comprises a bolt and a nut matched with the bolt; the bolt comprises a head part, a countersunk head part and a screw rod which are connected in sequence; a notch is arranged on one side of the top end of the head part to form a positioning step; a blind hole is formed in the other side of the head, a spring is arranged in the blind hole, and the outer end of the spring is connected with a wave bead partially protruding out of the head; the nut is in threaded connection with the screw. The utility model has the advantages of simple and reasonable structure and the practicality is strong, uses in the mould to tie after this installation can make rotational moulding production personnel lay and product drawing of patterns in-process liberation come out from loaded down with trivial details inserts to greatly shorten rotational moulding's production cycle, improve machining efficiency and reduce the cost of labor.

Description

Rapid mounting bolt for rotational molding insert

Technical Field

The utility model relates to a rotational moulding product inserts technical field specifically is to relate to a quick erection bolt of rotational moulding inserts.

Background

For producing containers or large closed plastic products, rotational molding processing has not been replaced by other processes so far. The biggest drawback of the rotomoulding process is its extremely low production efficiency. The number of inserts in the product further affects the production efficiency. For products with a large number of metal inserts, the insert placement before rotational molding and the demolding process after the products are finished can directly prolong the production period and reduce the efficiency and benefit.

With the rising of labor cost, how to correspondingly improve the rotational molding production efficiency and reduce the processing cost has become a problem to be faced by the rotational molding industry.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists above, the utility model aims at providing a quick installation of rotational moulding inserts is tied, and its simple structure is reasonable and the practicality is strong, uses in the mould to tie and to make rotational moulding producers lay and liberate with product drawing of patterns in-process from loaded down with trivial details inserts after can making the rotational moulding production personnel to greatly shorten rotational moulding's production cycle, improve machining efficiency and reduce the cost of labor.

In order to realize the purpose, the technical scheme of the utility model is that:

a rotational molding insert rapid installation bolt comprises a bolt and a nut matched with the bolt; the bolt comprises a head part, a countersunk head part and a screw rod which are connected in sequence; a notch is arranged on one side of the top end of the head part to form a positioning step; a blind hole is formed in the other side of the head, a spring is arranged in the blind hole, and the outer end of the spring is connected with a wave bead partially protruding out of the head; the nut is in threaded connection with the screw.

In one embodiment, the head, counter head and screw are cylindrical.

Further, transition fillets are arranged on the edges of the top surface of the head portion.

Further, the maximum diameter of the head < the maximum diameter of the screw < the diameter of the counter head.

As a specific example, the thickness of the countersunk head portion is 1.5 mm.

As a specific example, the beads have a diameter of 2 mm.

As a specific embodiment, the rapid mounting bolt for the rotational molding insert further comprises a flat gasket and a spring gasket which are matched with the nut for use, and the flat gasket and the spring gasket are both mounted on the screw rod.

As a specific example, the nut is a hexagonal nut.

The utility model has the advantages that:

the utility model has the advantages of simple and reasonable structure and strong practicability, the bolt can be pre-positioned by utilizing the positioning step, the angle of the wave bead is ensured to be aligned with the inner hole of the insert nut, and then the insert nut is clamped by utilizing the spring and the wave bead, so that the insert nut can be rapidly placed and the demoulding can be rapidly carried out after the product is formed; that is through using the utility model discloses can make rotational moulding production personnel lay and product drawing of patterns in-process liberation come out from loaded down with trivial details inserts to greatly shorten rotational moulding's production cycle, improve machining efficiency and reduce the cost of labor.

And (II) the bolt can be perfectly fit into the lower die by arranging the countersunk head part with the thickness of 1.5mm, and the top surface of the countersunk head part of the insert is attached to the bottom surface of the nut of the insert, so that no plastic residue is left before and after the product is molded.

Thirdly, the bolt is fixed by utilizing the flat gasket, the spring gasket and the nut, so that the bolt is firmer, and the dismounting mode is convenient and fast; the bolt is fixed in the lower die and then does not need to be disassembled, so that the bolt can be repeatedly used for a long time, the abrasion of the bolt caused by frequent disassembly and assembly can be reduced to the maximum extent, and the service life of the bolt is prolonged.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the overall structure of the present invention;

fig. 3 is an exploded view of the present invention;

figure 4 is a schematic view of the present invention in use;

fig. 5 is an enlarged view at a in fig. 4.

Reference numerals:

1. a bolt; 11. a head portion; 111. positioning a step; 112. blind holes; 113. a spring; 114. beads; 115. transition fillets; 12. a countersunk head part; 13. a screw; 2. a nut; 3. a flat gasket; 4. a spring washer; 100. a lower die; 101. producing a product; 102. embedding a nut; 103. and (4) an upper die.

Detailed Description

The invention will be further elucidated with reference to the drawings and the embodiments, which are exemplary only and do not limit the scope of the invention.

As shown in fig. 1-3, a rotational molding insert quick mounting bolt comprises a bolt 1 and a nut 2 matched with the bolt 1; the bolt 1 comprises a head part 11, a countersunk head part 12 and a screw 13 which are connected in sequence; a notch is arranged on one side of the top end of the head part 11 to form a positioning step 111; a blind hole 112 is arranged at the other side of the head part 11, a spring 113 is arranged in the blind hole 112, and the outer end of the spring 113 is connected with a wave bead 114 which partially protrudes out of the head part 11; the nut 2 is in threaded connection with the screw 13. Preferably, the nut 2 is a hexagonal nut, but the nut 2 may be another nut. The width of the positioning step 111 can be made according to actual needs, and is not limited in detail here. In this embodiment, the blind bore 112 axis is perpendicular to the head 11.

Preferably, the head 11, the countersunk head 12 and the screw 13 are all cylindrical and the side wall of the head 11 is smooth. Transition fillets 115 are provided at the edges of the top surface of the head 11. The maximum diameter of the head 11 < the maximum diameter of the screw 13 < the diameter of the counter-sunk portion 12. The thickness of the countersink 12 is 1.5 mm.

Preferably, beads 114 are 2mm in diameter.

This quick erection bolt of rotational moulding inserts is still including flat gasket 3 and the spring shim 4 of using with the cooperation of nut 2, and flat gasket 3 and spring shim 4 can make nut 2 can twist 2 tighter to fixing bolt better.

Combine fig. 4 and fig. 5, when using the utility model discloses a when the quick installation of rotational moulding inserts is tied, at first with bolt 1's screw rod 13 threaded connection to bed die 100 in, make countersunk head portion 12 imbed in the corresponding counter sink in the bed die 100, penetrate the lower extreme of screw rod 13 with flat gasket 3, spring shell fragment 4 and nut 2 in proper order from the below of bed die 100 after that, then screw up bolt 2 can be fixed well with nut 2. Then the insert nut 102 to be embedded into the product 101 is inserted from above the head 11, the top end of the head 11 is slightly smaller than the inner hole of the insert nut 101 due to the arrangement of the positioning step 111, so that pre-positioning can be performed, the angle of the wave bead 114 is ensured to be aligned with the inner hole of the insert nut 102, after the top ends of the heads 11 of the bolts 1 in the lower mold 100 are correspondingly inserted into the inner holes of the insert nuts 102, the bolts 1 are positioned, then the insert nut 102 is continuously pushed to make the wave bead 114 contact with the inner hole wall of the insert nut 102, so that the spring 113 contracts and the wave bead 114 moves into the blind hole 112, and then the wave bead 114 can smoothly enter the insert nut 102 and be clamped in the thread in the insert nut 102. The wave beads 114 are always pushed by the outward force of the springs 113, so that the insert nuts 113 can be clamped, the insert nuts 102 are installed, after the insert nuts 102 are installed, the bottom surfaces of the insert nuts 102 are attached to the top surfaces of the countersunk portions 12, and then the upper mold 103 is installed and plastic is injected to mold the product. The insert nut 102 is positioned simply and quickly through the spring 113 and the wave bead 114, and the insert nut 102 only performs two actions of sleeving and pulling out on the bolt 1, so that time and labor are saved; and simultaneously, the utility model discloses a rotational moulding inserts installs fast and ties and also need not dismantle after the shaping of product 101, can reduce the wearing and tearing that the bolt leads to owing to frequent dismouting by furthest like this, has prolonged the life of bolt. Can make through above multiple advantage the utility model discloses can promote production efficiency widely and reduce the cost of labor, also can reduce the maintenance cost of mould by furthest.

The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.

Claims

1. The utility model provides a quick erection bolt of rotational moulding inserts which characterized in that:

the bolt comprises a bolt and a nut matched with the bolt; the bolt comprises a head part, a countersunk head part and a screw rod which are connected in sequence; a notch is arranged on one side of the top end of the head part to form a positioning step; a blind hole is formed in the other side of the head, a spring is arranged in the blind hole, and the outer end of the spring is connected with a wave bead partially protruding out of the head; the nut is in threaded connection with the screw.

2. The rotomolding insert quick install pin of claim 1, wherein:

the head part, the countersunk head part and the screw rod are all cylindrical.

3. The rotomolding insert quick install pin of claim 2, wherein:

and the edge of the top surface of the head part is provided with a transition round angle.

4. The rotomolding insert quick install pin of claim 2, wherein:

the maximum diameter of the head is less than the maximum diameter of the screw rod and less than the diameter of the countersunk head.

5. The rotomolding insert quick install pin of claim 1, wherein:

the thickness of the countersunk head part is 1.5 mm.

6. The rotomolding insert quick install pin of claim 1, wherein:

the beads have a diameter of 2 mm.

7. The rotomolding insert quick install pin of claim 1, wherein:

the rotational molding insert quick mounting bolt further comprises a flat gasket and a spring gasket which are matched with the nut for use, and the flat gasket and the spring gasket are both mounted on the screw rod.

8. The rotomolding insert quick install pin of claim 1, wherein:

the nut is a hexagonal nut.