Embedded part demolding device capable of preventing product from being scratched

Abstract

The utility model provides an embedded part demoulding device for an anti-scratch product, which comprises a first bushing, a second bushing, a first connecting rod, a second connecting rod, a second connecting rod, a third bushing and a fourth bushing, the first bushing is arranged on a mould body, and a mounting hole is formed in the first bushing; the second bushing is arranged on the mounting hole in a penetrating manner, one end of the second bushing penetrates out, and a through hole is formed in the second bushing; the fixing screw rod is inserted into the through hole and is in sliding fit with the through hole, a connecting part is arranged at the bottom of the fixing screw rod, external threads are arranged on the side face of the connecting part and used for being detachably connected with the embedded part, and a positioning part is further arranged at the end, away from the embedded part, of the fixing screw rod; and the positioning device is used for positioning the depth of the fixed screw inserted into the through hole. Through the anti-scratching structural design, accurate pre-embedding adjustment, sealing and glue overflowing prevention, and material performance optimization, the core pain point of demolding of the rotational molding embedded part is remarkably solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotational moulding die technical field, concretely relates to a pre -buried spare stripping device of anti -scratch product. BACKGROUND

[0002] Rotational moulding is a kind of plastics processing mode using rotating mould, its processing process is, plastic powder or slurry is put into mould, closed mould is rotated or swings on equipment, and mould outside is heated through open fire or hot air simultaneously, plastic powder or slurry is turned over and flows in the inside of mould under the state of being heated, gradually coats to the inner surface of mould after reaching softening point, melts and coagulates, and after cooling down, stripping and taking out product in natural environment or through water, mist, wind and other medium.

[0003] Many rotational moulding products need to pre -bury some nut connecting pieces (collectively pre -buried spare) to install and cooperate with other parts, and some pre -buried spare needs to be arranged under certain depth of product surface, so that the surface is more beautiful or other factors, currently, in the production and manufacturing process, these pre -buried spare usually uses bolt to be fixed on mould in advance, and bolt is removed before stripping, but when rotating and removing bolt, the side of bolt is in close contact with product, so as to easily cause product scratch, and the product is partially deformed by pulling the completely hardened plastic, which affects the yield of product. UTILITY MODEL CONTENTS

[0004] The utility model provides a pre -buried spare stripping device of anti -scratch product can effectively solve above -mentioned problem.

[0005] The utility model is realized as follows:

[0006] A pre -buried spare stripping device of anti -scratch product, comprising:

[0007] First bush, first bush is located on mould body, and one mounting hole is arranged on first bush;

[0008] Second bush, second bush is arranged on the mounting hole and one end is out, and one through hole is arranged on second bush;

[0009] Fixed screw rod, fixed screw rod is inserted into the through hole and is slidably connected, the bottom of fixed screw rod is equipped with a connecting part, the outer thread is arranged on the side surface of connecting part for being detachably connected with pre -buried spare, and one positioning part is further arranged on the end away from pre -buried spare of fixed screw rod for positioning the depth of fixed screw rod inserted into the through hole.

[0010] As further improvement, the positioning part is a position-adjustable nut, and the position of the nut is adjusted by thread connection.

[0011] As a further improvement, the second bushing is provided with a chamfer or a fillet at one end edge close to the embedded part.

[0012] As a further improvement, the mounting hole is provided with a first threaded portion and a smooth portion on the side, and the second bushing is provided with a second threaded portion threadedly matched with the first threaded portion, and a smooth rod portion slidingly matched with the smooth portion.

[0013] As a further improvement, the first bushing is inserted into the mold body in an interference fit, and the first bushing is provided with a positioning boss.

[0014] As a further improvement, the first bushing and the second bushing are both made of plastic mold steel, and the fixing screw is made of carbon steel.

[0015] As a further improvement, the second bushing comprises a dismounting portion with a hexagonal cross section.

[0016] As a further improvement, the smooth rod portion has a draft angle on the side.

[0017] The beneficial effects of the present application are as follows:

[0018] The traditional method is easy to scratch the product by rotating the bolt for demolding, the present application directly extracts the fixed screw after separating from the embedded part, avoids the contact between the side surface of the bolt and the product, and the embedded part is fixed by the lower end surface of the second bushing, and the fixed screw and the second bushing are removed during demolding, and the contact surface between the second bushing and the product is a smooth surface, so that the risk of bolt scratch product is eliminated;

[0019] The chamfer or the fillet is designed at one end of the second bushing close to the embedded part, so that the product wraps the edge of the embedded part, and the stress concentration of the structure and the deformation of the edge and corner caused by pulling during demolding are avoided.

[0020] The first bushing is flush with the inner side of the mold, and the length of the second bushing that penetrates out is the embedded depth, so that different embedded requirements can be flexibly adapted by replacing the second bushing with different lengths or adjusting the positioning portion, without the need to modify the mold body, thereby reducing the mold customization cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0022] Fig. 1 is a structural schematic diagram provided by the embodiments of the present application.

[0023] Fig. 2 is a mounting state sectional view provided by the embodiment of the utility model.

[0024] Fig. 3 is a parts explosion view provided by the embodiment of the utility model.

[0025] Reference signs:

[0026] 1, first bushing;11, positioning boss;2, second bushing;21, dismounting part;22, second threaded part;23, polished rod part;3, fixed screw;31, positioning part;32, connecting part;4, pre-embedded part;5, mold body. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantage of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model.

[0028] In the description of the utility model, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0029] Referring to Figs. 1-3 As shown in the figure, a pre-embedded part stripping device for scratch-proof products comprises:

[0030] The first bushing 1 is arranged on the mold body 5, and the first bushing 1 is provided with a mounting hole. The first bushing 1 is flush with the inner side of the mold body 5 at one end close to the inner side of the mold body 5.

[0031] Second bushing 2, second bushing 2 is provided on the mounting hole and one end is out, the distance of its out is the depth of the embedded part 4 upper end surface, the upper end surface of the embedded part 4 is attached to the lower end surface of the second bushing 2 during installation, a through hole is provided on the second bushing 2, the through hole is used for installing the fixed screw 3, the fixed screw 3 is inserted into the through hole and is slidably connected, the fixed screw 3 bottom is provided with a connecting part 32, the connecting part 32 side is provided with external thread for detachable connection with the embedded part 4, the fixed screw 3 is further provided with a positioning part 31 on the end away from the embedded part 4, which is used for positioning the depth of the fixed screw 3 inserted into the through hole.

[0032] During installation, the first bushing 1 and the second bushing 2 are installed on the mold body 5, then the fixed screw is inserted through the through hole, the embedded part 4 is connected with the connecting part 32 and is fixed with the second bushing 2, after the rotational molding is completed, the fixed screw 3 is separated from the embedded part 4 and is pulled out from the through hole, then the second bushing 2 is detached from the first bushing 1, finally the product is demolded from the mold body 5.

[0033] Specifically, the positioning part 31 is a position-adjustable nut, which is adjusted by thread connection to adjust the depth of the fixed screw 3 inserted into the embedded part 4, and can be applied when replacing the second bushing 2 of different lengths, saving the cost of parts.

[0034] Specifically, the second bushing 2 is provided with a chamfer or a round corner at the edge of the end close to the embedded part 4, so that the edge position of the upper end surface of the embedded part 4 is wrapped by the product.

[0035] Specifically, the side of the mounting hole is provided with a first threaded part and a smooth part, the side of the second bushing 2 is provided with a second threaded part 22 threadedly connected with the first threaded part and a smooth rod part 23 slidably connected with the smooth part, the first bushing 1 and the second bushing 2 are detachably connected by the first threaded part and the second threaded part 22, the first threaded part is longer than the second threaded part 22, the smooth part and the smooth rod part 23 are arranged close to the end of the product to tightly attach them, preventing the liquid from flowing into during the rotational molding to cause overflow of the product.

[0036] Specifically, the first bushing 1 is inserted into the mold body 5 and is in interference fit with the mold body 5, the first bushing 1 is provided with a positioning boss 11, which directly clamps the first bushing 1 into the mold body 5, so that the installation is simple and tight without gap to cause overflow, and the first bushing 1 does not need to be frequently disassembled.

[0037] Specifically, the first bushing 1 and the second bushing 2 are made of plastic mold steel, which has high strength, corrosion resistance, wear resistance, easy processing and good wear resistance, and is suitable for frequent disassembly, and the fixed screw is made of ordinary carbon steel, saving the cost of parts.

[0038] Specifically, the second bushing 2 is located outside the mold body 5 and comprises a dismounting part 21 with a hexagonal cross section, facilitating dismounting of the second bushing 2.

[0039] Specifically, the light rod part side surface has a draft, i.e. a non-constant cross section cylinder, which gradually decreases towards the end, facilitating demolding.

[0040] The above only describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A scratch-resistant product insert demolding apparatus characterized by, The utility model relates to a plastic embedded part fixing device, including: First bushing (1), first bushing (1) is located on mould body (5), one mounting hole is equipped on first bushing (1); Second bushing (2), second bushing (2) is equipped on the mounting hole and one end is worn out, a through hole is equipped on second bushing (2); Fixed screw rod (3), fixed screw rod (3) is inserted into the through hole and is slid with it, the bottom of fixed screw rod (3) is equipped with a connecting portion (32), the side of connecting portion (32) is equipped with external thread for with preformed part (4) detachable connection, fixed screw rod (3) is still equipped with a positioning part (31) on the end away from preformed part (4), for positioning the depth of fixed screw rod (3) inserted into the through hole.

2. A scratch resistant product insert demolding apparatus according to claim 1, wherein The positioning part (31) is a position-adjustable nut, and the position thereof is adjusted by thread connection.

3. A scratch resistant product insert demolding apparatus as defined in claim 1, wherein, The second bushing (2) is provided with a chamfer or a round corner at an edge of one end close to the preformed part (4).

4. A scratch resistant product insert demolding apparatus as defined in claim 1, wherein The mounting hole is provided with a first threaded portion and a smooth portion on the side surface, the second bushing (2) is provided with a second threaded portion (22) threadedly matched with the first threaded portion and a smooth rod portion (23) slidably matched with the smooth portion.

5. A scratch resistant product insert demolding apparatus as defined in claim 1, wherein, The first bushing (1) is inserted into the mould body (5) and is in interference fit with the mould body (5), and the first bushing (1) is provided with a positioning boss (11).

6. A scratch resistant product insert demolding apparatus as defined in claim 1, wherein, The first bushing (1) and the second bushing (2) are made of plastic die steel, and the fixed screw rod (3) is made of carbon steel.

7. A scratch resistant product insert demolding apparatus as defined in claim 4, wherein The second bushing (2) comprises a dismounting portion (21) having a hexagonal cross section.

8. A scratch resistant product insert demolding apparatus as defined in claim 4, wherein, The smooth rod portion (23) has a draft on the side surface.

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