CN216760839U - High-frequency heating melting plastic molding equipment - Google Patents

Abstract

The utility model discloses high-frequency heating molten plastic forming equipment in the field of automobile accessories, which comprises a workbench, wherein a placing rack is arranged on the workbench, a placing groove is formed in the placing rack, a pair of hot rivets are arranged right above the placing groove and connected with a vertical lifting mechanism, a limiting mechanism is arranged on the lifting mechanism in a matched manner, and a purging mechanism is also arranged on the hot rivets in a matched manner and arranged on the vertical lifting mechanism; the method is characterized in that a molten plastic part is placed in a placing groove, a vertical lifting mechanism acts to drive a hot riveting head to descend to the upper surface of the plastic part, the plastic part is hard, the hot riveting head cannot continue to descend before being molten, and the lifting mechanism drives the hot riveting head to continue to move downwards until the part of the plastic part in contact with the hot riveting head is molten, until the set melting depth is reached, the blowing mechanism blows air at the moment, the heating is fast, the rapid cooling can be realized, the efficiency is high, the forming good product effect is good, and the forming surface is smooth.

Description

High-frequency heating melting plastic molding equipment

Technical Field

The utility model relates to a thermoplastic device in the field of automobile part assembly.

Background

Plastic parts are used in many parts of automobile accessory assembly and need to be thermoformed. In the prior art, plastic molding is mostly conducted to a molding die by a heating rod, so that a secondary melting processing mode of plastic is performed, the mode has the disadvantages of more defects, serious heat loss, incapability of performing gradient heating and quick cooling, low efficiency, poor molding yield effect and unsmooth molding surface.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide high-frequency heating molten plastic molding equipment which is fast in heating, capable of rapidly cooling, high in efficiency, good in molding good product effect and smooth in molding surface.

In order to achieve the purpose, the utility model provides high-frequency heating melting plastic forming equipment which comprises a workbench, wherein a placing rack is arranged on the workbench, a placing groove is formed in the placing rack, a pair of hot rivets are arranged right above the placing groove and connected with a vertical lifting mechanism, a limiting mechanism is arranged on the lifting mechanism in a matched mode, a purging mechanism is further arranged on the hot rivets in a matched mode, and the purging mechanism is arranged on the vertical lifting mechanism.

Compared with the prior art, the utility model has the beneficial effects that the plastic piece to be melted is placed in the placing groove, the vertical lifting mechanism acts to drive the hot riveting head to descend to the upper surface of the plastic piece, the plastic piece is hard, the hot riveting head cannot descend continuously before being melted, the lifting mechanism drives the hot riveting head to move downwards continuously until the part of the plastic piece, which is in contact with the hot riveting head, is melted, the plastic piece reaches the set melting depth, the blowing mechanism blows air at the moment to accelerate the cooling of the plastic piece, so that the plastic piece cannot be adhered to the hot riveting head when the hot riveting head is driven to ascend by the lifting mechanism, the heating is fast, the rapid cooling can be realized, the efficiency is high, the good molding effect is good, the molding surface is smooth, and the utility model can be used for rapid molding of the plastic piece.

As a further improvement of the utility model, the vertical lifting mechanism comprises a connecting block, the hot rivet head is arranged at the bottom of the connecting block, the top of the connecting block is connected with a lifting cylinder through a limiting mechanism, the lifting cylinder is arranged on a stroke plate, the stroke plate is arranged on a fixed frame, and the fixed frame is arranged on a workbench.

The cylinder action of going up and down like this for the connecting block reciprocates along the stroke board, and then drives the hot riveting head and reciprocates, realizes the hot plastic molding of hot riveting head to the working of plastics.

As a further improvement of the utility model, the purging mechanism comprises a purging pipe, one end of the purging pipe is connected with the connecting block, the other end of the purging pipe is aligned with the lower part of the hot riveting head, an air passage is arranged in the connecting block, and the air passage is connected with the compressed air pipe.

After the set time of rivet hot arrives like this, compressed air pipe lets in compressed air, sends into through the air flue and sweeps the pipe to blow to rivet hot head lower part and working of plastics from sweeping intraductally, realize the rapid cooling of working of plastics, make after the rivet hot head rises can not and the working of plastics between take place to glue the condition of gluing the wire drawing.

As a further improvement of the utility model, the limiting mechanism comprises a limiting block arranged at the top of the connecting block, a convex part of the limiting block is inserted into a limiting groove, the limiting groove is arranged on the stroke plate, and the top of the limiting block is connected with the lifting cylinder; the stopper can only be in the spacing inslot because its bulge reciprocates like this, when the connecting block rises and descends, in case break down, because the stroke restriction of stopper for the connecting block can not surpass the stroke of stopper, and then avoids the hot rivet head to melt the working of plastics and wear.

As a further improvement of the utility model, the front surface of the connecting block is provided with a displacement sensor; therefore, in the moment that the hot riveting head is just contacted with the plastic part, the hot riveting head is blocked and cannot continue to move downwards, the displacement sensor records the distance at the moment, the hot riveting head continues to move downwards to the set depth, and the displacement sensor records the distance at the moment so as to judge whether the actual downward moving depth of the hot riveting head reaches the set depth or not and calibrate the hot riveting head.

As a further improvement of the utility model, the front end of the placing frame is provided with a pair of positioning columns, so that the front end of a product to be processed can be clamped between the positioning columns through the positioning columns, and the position of the product after being placed can be exactly corresponding to the hot riveting head.

As a further improvement of the utility model, a passing block is arranged at the lower part of the connecting block, a cable hole is formed in the passing block, and a connecting cable of the hot rivet head passes through the cable hole; connecting cable leaves certain displacement volume in the cable hole like this, when making the hot rivet head reciprocate, does not receive connecting cable to connecting cable is also injectd in the vertical direction of cable hole, also does not receive other mechanisms to influence, and it is more reasonable to lay wire.

Drawings

Fig. 1 is an overall perspective view of the present invention.

FIG. 2 is a perspective view of the second embodiment of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

The device comprises a workbench, a placing frame, a fixing frame, a limiting block, a stroke plate, a limiting groove, a displacement sensor, a lifting cylinder, a connecting block, a connecting cable, a passage block, a placing groove, a positioning column, a plastic part, a product 15, a purging pipe 16 and a hot riveting head 17, wherein the workbench comprises a workbench 1, a placing frame 2, a fixing frame 3, a limiting block 4, a stroke plate 5, a limiting groove 6, a displacement sensor 7, a lifting cylinder 8, a connecting block 9, a connecting cable 10, a passage block 11, a placing groove 12, a positioning column 13, a plastic part 14, a product 15, a purging pipe 16 and a hot riveting head 17.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

the high-frequency heating melting plastic molding equipment shown in fig. 1-3 comprises a workbench 1, wherein a placing frame 2 is arranged on the workbench 1, a placing groove 12 is formed in the placing frame 2, a pair of hot riveting heads 17 is arranged right above the placing groove 12, the hot riveting heads 17 are connected with a vertical lifting mechanism, a limiting mechanism is arranged on the lifting mechanism in a matched manner, a purging mechanism is further arranged on the hot riveting heads 17 in a matched manner, and the purging mechanism is arranged on the vertical lifting mechanism; the vertical lifting mechanism comprises a connecting block 9, the hot rivet head 17 is arranged at the bottom of the connecting block 9, the top of the connecting block 9 is connected with a lifting cylinder 8 through a limiting mechanism, the lifting cylinder 8 is arranged on a stroke plate 5, the stroke plate 5 is arranged on a fixed frame 3, and the fixed frame 3 is arranged on the workbench 1; the purging mechanism comprises a purging pipe 16, one end of the purging pipe 16 is connected with the connecting block 9, the other end of the purging pipe is aligned with the lower part of the hot rivet 17, an air passage is arranged in the connecting block 9, and the air passage is connected with a compressed air pipe; the limiting mechanism comprises a limiting block 4 arranged at the top of a connecting block 9, the protruding part of the limiting block 4 is inserted into a limiting groove 6, the limiting groove 6 is arranged on a stroke plate 5, and the top of the limiting block 4 is connected with a lifting cylinder 8; a displacement sensor 7 is arranged on the front surface of the connecting block 9; a pair of positioning columns 13 is arranged at the front end of the placing rack 2; the lower part of the connecting block is provided with a passing block 11, a cable hole is arranged in the passing block 11, and the connecting cable 10 of the hot riveting head 17 passes through the cable hole

When the device works, a processed product 15 is placed into the placing groove 12 on the placing rack 2, the front end of the product 15 is just clamped between the pair of positioning columns 13, a plastic part 14 on the product 15 is located right below the hot riveting head 17, the lifting cylinder 8 is started, the lifting cylinder 8 is driven to move downwards, the hot riveting head 17 is propped against the upper surface of the plastic part 14 and does not descend any more due to the fact that the plastic part 14 is hard when not being heated, and the displacement sensor 7 records displacement information at the moment; the hot riveting head 17 is electrified and heated, the plastic part 14 is melted and softened, the lifting cylinder 8 continues to drive the hot riveting head 17 to descend until a set position is reached, the end of the cylinder does not extend downwards at the moment, the displacement sensor 7 records the displacement information at the moment, the actual melting depth of the plastic part 14 is calculated by combining the two displacement information, and then the actual melting depth is compared with the set depth for checking, so that the situation that the actual melting depth is inconsistent with the set depth is avoided; the hot riveting head 17 stops heating, the blowing pipe 16 blows air towards the hot riveting head 17 and the plastic part 14 at the moment, and then the plastic part 14 is rapidly cooled, so that the plastic part 14 is rapidly molded, then the hot riveting head 17 rises, the product 15 is taken out, and the next piece of processing is carried out.

The method comprises the steps that alternating current for converting power frequency into alternating current with high frequency is used for supplying alternating current with high frequency to a hot rivet 17 (special alloy material) instantly, electromagnetic induction is used for heating an electric conductor (hot rivet 17), the principle is that worm current is generated in the electrifying process, joule heating of metal is caused by the resistance of the hot rivet 17 material, and therefore the alternating current is transmitted to the processing surface of a processed product 15 in a heat conduction mode to melt a plastic part 14 of the product 15 at high temperature, then secondary shaping is carried out on plastic through a special forming cavity of the hot rivet 17, and the formed plastic is ensured to be formed and solidified instantly through rapid air cooling; adopt displacement sensor 7 to monitor the degree of depth of rivet hot in the moulding process of heating to ensure the uniformity of course of working, ensure the yields of product 15 processing.

The utility model adopts a program control mode, can accurately control the actual temperature in the heating process, thereby better bringing about the secondary molding of plastics; the heating and cooling of the molding surface in the plastic secondary molding process can be realized by the same mechanism, the operation convenience and the efficiency are improved, and the original processing time of each product 15 is increased from 65S to within 20S; promote the processing environment clean, avoid the environmental pollution that the plastics material decomposition brought in the electric bar mode heat forming process brought.

The present invention is not limited to the above embodiments, and based on the technical solutions of the present disclosure, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.

Claims (7)

1. The utility model provides a high-frequency heating melting plastic molding equipment which characterized in that: the hot riveting die comprises a workbench, a placing rack is arranged on the workbench, a placing groove is formed in the placing rack, a pair of hot riveting heads is arranged right above the placing groove and connected with a vertical lifting mechanism, a limiting mechanism is arranged on the lifting mechanism in a matched mode, a purging mechanism is further arranged on the hot riveting heads in a matched mode, and the purging mechanism is arranged on the vertical lifting mechanism.

2. A high-frequency heating molten plastic molding apparatus as claimed in claim 1, wherein: the vertical lifting mechanism comprises a connecting block, the hot riveting head is arranged at the bottom of the connecting block, the top of the connecting block is connected with a lifting cylinder through a limiting mechanism, the lifting cylinder is arranged on a stroke plate, the stroke plate is arranged on a fixing frame, and the fixing frame is arranged on a workbench.

3. A high-frequency heating molten plastic molding apparatus as claimed in claim 2, wherein: the purging mechanism comprises a purging pipe, one end of the purging pipe is connected with a connecting block, one end of the purging pipe is aligned with the lower portion of the hot riveting head, an air passage is arranged in the connecting block, and the air passage is connected with a compressed air pipe.

4. A high-frequency heating molten plastic molding apparatus as claimed in claim 3, wherein: the limiting mechanism comprises a limiting block arranged at the top of the connecting block, the protruding part of the limiting block is inserted into a limiting groove, the limiting groove is formed in the stroke plate, and the top of the limiting block is connected with the lifting cylinder.

5. A high-frequency heating molten plastic molding apparatus as claimed in claim 4, wherein: and a displacement sensor is arranged on the front surface of the connecting block.

6. A high-frequency heating molten plastic molding apparatus as claimed in claim 5, wherein: the front end of the placing frame is provided with a pair of positioning columns.

7. A high-frequency heating molten plastic molding apparatus as claimed in claim 6, wherein: the lower part of the connecting block is provided with a passing block, a cable hole is formed in the passing block, and the connecting cable of the hot rivet head penetrates through the cable hole.

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