CN213437671U

CN213437671U - Novel maintenance device for ball nozzle of injection molding machine

Info

Publication number: CN213437671U
Application number: CN202020769192.3U
Authority: CN
Inventors: 刘超; 赵国书
Original assignee: XI'AN KUNLUN AUTOMOTIVE ELECTRONIC CO Ltd
Current assignee: XI'AN KUNLUN AUTOMOTIVE ELECTRONIC CO Ltd
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2021-06-15
Anticipated expiration: 2030-05-11

Abstract

The utility model belongs to the technical field of machining, and discloses a novel maintenance device for a ball nozzle of an injection molding machine, which is provided with one or more copper male electrodes, wherein the copper male electrodes are provided with a marking and dividing middle part, and the outer side of the marking and dividing middle part is provided with a straight body avoidance vacancy; and a ball nozzle (tool electrode) is arranged at the lower end of the copper male electrode. Adopt the utility model discloses a replaced traditional metal cutting processing back, only need use red copper material, design and process one with the same copper of processing part shape can, utilize the principle that the electroerosion equipment carries out the electroerosion to the metal surface to process metal parts, and red copper material is softer, ductility is high, cutting performance is very good, the expensive cutter expense that traditional cutting needs to use has been saved, the loss of electrode is very little in the use, can used repeatedly many times, the production preparation time of later stage processing has been saved greatly, because the public product shape of copper itself with beat the table and divide the meso-position to all be a clamping processing and form, so the position accuracy is higher.

Description

Novel maintenance device for ball nozzle of injection molding machine

Technical Field

The utility model belongs to the technical field of machining, especially, relate to a novel maintenance device of injection molding machine bulb nozzle.

Background

At present, a metal cutting machine tool is mostly adopted for spherical surface maintenance and processing on a ball nozzle, and the following processing schemes are adopted:

machining by using a common lathe: because the ordinary lathe is used for turning the spherical surface, X, Z two shafts are required to move simultaneously to turn the spherical surface, the operation worker is often required to have very strong processing technology and operation experience, the X shaft and the Z shaft are respectively rotated by two hands to move, the matching speed of the two shafts is required to be controlled, and the spherical surface sensed by the experience of the operator can cause the spherical surface to be out of round, so that the ball nozzle has the defects of poor sealing and a large amount of leakage.

And (3) numerical control turning: because the numerical control lathe controls the X, Z shaft to move by the servo motor, a spherical surface with high quality and accurate data can be lathed in comparison with the scheme 1, but the clamping reference end is a threaded end, so that the clamping precision is not high, the accurate position precision is difficult to obtain during machining, the spherical center of the machined spherical surface deviates, and the sealing performance of the ball nozzle is also influenced.

The two schemes are the most similar prior art at present, and a cutting tool is required to cut off metal materials to obtain the required processing surface shape, surface quality and processing precision, so that various tools required by processing cannot be purchased in large quantity, the hardness of processing materials of the ball nozzle is very high, a high-speed steel tool with low price cannot cut off the high-hardness materials, the service life of the tool cannot be effectively guaranteed even if the expensive hard alloy tool is used, the surface quality and precision requirements of the processed materials cannot be guaranteed, the processing efficiency is low, the tool cost is high, and the processing quality cannot be effectively guaranteed.

Through the above analysis, the problems and defects of the prior art are as follows:

(1) various tools required for machining need to be purchased in large quantity, expensive tools made of hard alloy materials are used, and the service life of the tools cannot be effectively guaranteed.

(2) The surface quality and the precision requirement of the processed material can not be ensured, the processing efficiency is low, the cutter cost is high, and the processing quality can not be effectively ensured.

The difficulty in solving the above problems and defects is: the hardness of the processed material is high, above HRC60, and is the same as the hardness of the material of a common high-speed steel cutter, so the traditional cutter cannot cut. The machined part has no reliable clamping reference, so that the clamping and alignment are difficult, and the required position precision cannot be obtained.

The significance of solving the problems and the defects is as follows: the ball nozzle needs to be repaired at least once every month, more equipment has more maintenance requirements, a plurality of pieces of equipment can be shut down due to the fact that timely maintenance is unavailable, and great economic loss is caused. The expensive cutter cost required by the maintenance of the ball nozzle can be reduced, the position precision of processing can be reliably ensured, and the equipment downtime is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a novel maintenance device of a ball nozzle of an injection molding machine.

The utility model is realized in such a way that the nozzle of the ball head of the injection molding machine is provided with one or more copper male electrodes, the copper male electrodes are provided with a middle part of the marking and the outer side of the middle part of the marking is provided with a straight body avoidance vacancy;

and a ball nozzle (tool electrode) is arranged at the lower end of the copper male electrode.

Further, a spark position of a discharge gap is arranged on the copper male electrode.

Further, the size of the discharge gap is 0.01mm-0.5 mm.

Further, the side surface of the straight body space avoiding position is a straight surface.

Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are:

after the utility model is adopted to replace the traditional metal cutting processing, only red copper material is needed to be used, a copper male body with the same shape as a processing part is designed and processed, the metal part is processed by utilizing the principle of carrying out the electro-erosion on the metal surface by the electro-erosion equipment, the red copper material is soft, has high ductility and very good cutting performance, the expensive cutter cost needed by the traditional cutting is saved, the loss of the electrode is very small in the using process, the electrode can be repeatedly used, the production preparation time of the later processing is greatly saved, because the product shape and the marking and dividing middle position of the copper male body are formed by one-time clamping processing, the position precision is higher, after the copper male body is installed and aligned, the part is obtained by the electro-erosion equipment through the discharge processing, the very high shape precision and the position precision can be obtained, the traditional cutting processing needs to process a part firstly, the method has the advantages that the first-time qualified rate is low when the dimension of the part is inspected, the copper dimension is firstly detected, and the part is machined after the qualified copper dimension is detected, so that the qualified rate of the part is powerfully guaranteed, the first-time machined qualified rate of the part is greatly improved, and the qualified rate can reach nearly 100%. The utility model discloses the contrast data of this scheme and conventional scheme among the practical application as follows:

name of scheme	Cost of tool (material)	Time of processing	First pass percent	Surface quality	Machining accuracy
						General car processing	200 yuan	2H	30％	In general	In general
Numerical control turning	200 yuan	1H	70％	Is preferably used	Is preferably used
						Designed copper male electrode electroerosion machining	60 Yuan	0.2H	100％	Good taste	Good taste

The second, be applicable to the processing hardness than higher, the profile contains the part of various complicated curved surfaces, uses this scheme after, can satisfy the clamping once, accomplishes processing, has saved ordinary machining equipment, complicated loaded down with trivial details installation alignment time, and machining efficiency improves 50% about, and simultaneously, the shape and the position size of part are stable, and the product percent of pass obviously increases.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.

FIG. 1 is a part of a copper male electrode product shape according to an embodiment of the present invention;

fig. 2 is a part of a copper male electrode provided in an embodiment of the present invention;

fig. 3 shows a positional relationship between a copper male electrode and a workpiece electrode in the electrical machining according to an embodiment of the present invention.

In the figure: 1. a product shape work portion; 2. marking the table and dividing the middle part; 3. straightening and avoiding vacant positions; 4. ball nose nozzles (tool electrodes); 5. a copper male electrode.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

To the problem that prior art exists, the utility model provides a novel maintenance device of injection molding machine bulb nozzle can solve the mould, the part of processing various high rigidity materials (like carbide and quenching steel etc.) and complicated shape, and it is right to combine the figure below to make detailed description the utility model discloses.

The dimension of the worked part is ensured and finished mainly by the product shape portion 1, and if the product shape portion 1 is damaged, the copper male electrode 5 needs to be repaired or remanufactured.

When the part is machined by the copper male electrode in the middle part 2 of the meter making part in the electrolytic corrosion mode, the mold blank is in a cuboid shape, a workpiece can be square and flat by meter calibrating and centering, the center of a product can be found, the position of the copper male electrode 5 relative to the machined part can be accurately positioned, accurate position precision can be obtained, and meanwhile, the copper male electrode does not touch the unmachined surface of the machined part in order to protect the copper male electrode.

The straight body avoiding position 3 has straight side surface, which not only can ensure the depth of the processing cavity, but also can avoid the contact with the non-processing surface to cause the over-cutting to cause the part scrap, and two objects carrying different charges will discharge only in case of small distance but no contact, therefore, the spark position when the copper ball nozzle (tool electrode) 4 and the copper male electrode 5 are machined in the same pattern, the shapes of the two products are consistent, the surface of the copper male is equivalent to a curved surface which is formed by equally spacing the spark position distance along the normal phase direction of the curved surface on the surface of the ball nozzle (tool electrode) 4, and the curved surface is not made in advance and is produced by electric machining, therefore, when the copper is machined, the distance of the spark position must be reserved in advance to ensure that the cavity machined by electric discharge is consistent with the product.

Fig. 3 shows the correct positional relationship of the copper male electrode 5 with respect to the machined part after the positive mounting.

Firstly, red copper is selected as a processing material of a ball nozzle (a tool electrode), so the ball nozzle (the tool electrode) is also called a copper male, the shape of the copper male is split by using computer aided design software according to a workpiece electrode solid model (the shape of the copper male is consistent with that of the workpiece electrode, and the direction of the copper male is opposite), and the copper male is composed of the following parts: the product shape part-spark position-marking and dividing middle position-avoiding straight position four parts are formed, and one part is not available. The product shape part is the core part of the copper electrode, the copper electrode carries out discharge machining on the workpiece electrode on an electro-erosion machining machine tool, and the shape of the workpiece electrode is finished by the part. And the spark position is exactly the discharge gap, and two objects that carry different electric charges just can discharge under the condition of the very little but not contact of distance, so copper is public and the work piece electrode does not actually have the contact, and this distance between them is exactly the spark position, consequently the utility model discloses processing copper with red copper is public, and the shape part is adding man-hour, must leave a reasonable spark position, does not reserve the shape size precision that the spark position will directly influence processing. The design of the middle position of the dial indicator can align and position the copper, so that the expected processing part can be accurately processed to the position of the workpiece electrode.

A complete copper public electrode must have following several partial structures, the product shape part, the scoring divides the median, the spark position, keep away the empty straight position, the utility model discloses process into like figure 1 shape with red copper material, product shape part 1 is the product core part, the functional surface that will use finally is this part guarantees, scoring middle part 2 shape is a cuboid, can put the copper public electrode flat through school table and minute, make bulb nozzle (tool electrode) center and copper public electrode center coincide, through moving horizontal and vertical two coordinate axes, just can be accurate make the product shape accomplish bulb nozzle (tool electrode) on the correct position, can obtain very high position accuracy, the side of keeping straight away from 3 is straight, play the effect in discharge machining is to guarantee the die cavity is the scoring divides the median in the processing depth that needs, the surface of the processed part is not touched, namely the clearance action is realized, the damage to the place which is not processed is prevented, and the protection action is realized. The spark position is the meaning of the discharge gap, two objects carrying different charges can discharge only under the condition of small distance and no contact, and no discharge phenomenon can occur when the distance is large or the objects are in full contact, so that the copper male electrode and the workpiece electrode are not in contact actually, the distance between the copper male electrode and the workpiece electrode is the spark position, namely, the surface of a product is a curved surface with a spark position distance at equal intervals along the normal direction, the surface is not prepared in advance, but is generated by processing, and parts with required size precision and position precision can be accurately processed by reasonably applying and using the parts.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be covered within the protection scope of the present invention by those skilled in the art within the technical scope of the present invention.

Claims

1. The novel maintenance device for the ball nozzle of the injection molding machine is characterized by being provided with one or more copper male electrodes, wherein the copper male electrodes are provided with a marking part middle part, and the outer side of the marking part middle part is provided with a straight body avoidance vacancy;

and a ball nozzle is arranged at the lower end of the copper male electrode.

2. The novel maintenance device for the ball nozzle of the injection molding machine as claimed in claim 1, wherein the copper male electrode is provided with a spark site of a discharge gap.

3. The novel maintenance device for the ball nozzle of the injection molding machine as claimed in claim 2, wherein the size of the discharge gap is 0.01mm-0.5 mm.

4. The novel maintenance device for the ball nozzle of the injection molding machine as claimed in claim 1, wherein the side surface of the straight body clearance position is a straight surface.