CN112706357B - New energy charging pile electrode insert, positioning structure and positioning method thereof - Google Patents

Abstract

The invention discloses a new energy charging pile electrode insert, a positioning structure and a positioning method thereof, and aims to solve the defect that the shape of a plastic shell of the existing insert is unstable due to the fact that the existing insert is easy to shake in a die. The invention comprises an upper die and a lower die, wherein two groups of cavities are arranged on the lower die, the cavities are symmetrically arranged in the length direction of the lower die, each cavity comprises an insert mounting groove and an injection cavity, the insert mounting grooves are used for positioning a first conductive piece, the insert mounting grooves correspond to the first conductive piece, a second conductive piece is vertically arranged, each injection cavity comprises a molding surface formed by the lower die and the upper die, which correspond to the upper edge and the lower edge of a product, the front surface and the rear surface of the lower die, which correspond to the second conductive piece, are respectively provided with a front core-pulling structure, a rear core-pulling structure and a side core-pulling structure on the side surface of the second conductive piece, the injection cavities are sealed, and the surfaces of the front core-pulling structure, the rear core-pulling structure and the side core-pulling structure, which are contacted with molten plastics, are molding surfaces. The device can accurately position the insert, and provides guarantee for final precision of products.

Description

New energy charging pile electrode insert, positioning structure and positioning method thereof

Technical Field

The invention relates to the technical field of electric automobiles, in particular to a new energy charging pile electrode insert, a positioning structure and a self-sensing positioning method thereof.

Background

With the rapid growth of Chinese economy, the natural environment pollution problem of human beings depending on survival is increasingly heavy, and in order to solve the environment pollution problem, an electric vehicle is an important measure for replacing the traditional fuel vehicle. Under the support of national policies, the demand of electric vehicles is rapidly increasing, and the demand of corresponding supporting facilities such as charging piles is also rapidly increasing. If the development speed of the charging pile does not keep up with the development speed of the electric vehicle, the development speed of the electric vehicle is restricted just as if the development of a gas station lags behind the development of a fuel oil vehicle. The charging motor connector of the public charging pile needs repeated plug-in mounting, and the requirements on precision and durability are quite high. The conductive terminals need to be externally connected to a plastic housing, requiring the accuracy of the device as a whole.

Chinese patent publication No. CN108773015a, name is an injection mold of taking inserts location, and this application discloses an injection mold of taking inserts location, and its structure includes injection mold, recess, inserts locating component, fixed block, main fixed block, vice fixed block and lid, be equipped with the recess on the injection mold, the inside of recess is equipped with inserts locating component, inserts locating component passes through the recess and is connected with injection mold contact, injection mold's top is equipped with the fixed block, the fixed surface of fixed block is equipped with the injection orifice, and this injection mold of taking inserts location, accessible set up an inserts locating component, the spacer ring of inside of usable spacer ring surface is built-in advance to the metal plug, forms fixed angle, is convenient for in the injection molding, increases the shaping rate of triangle plug, and the side of the injection mold sets up the recess, is convenient for inserts locating component's embedment, and the convenience is carried out the in-process of inserts use at the injection mold, can take fast, has increased the speed of inserts, simple structure, easily realizes. Insert molding generally adopts a mode of fixing a positioning groove of a mold framework, and a product designer can also conduct targeted design on insert fixing and an injection molding product, but the structure of the insert determines that the positioning mode is difficult to apply.

Disclosure of Invention

The invention overcomes the defect that the shape of the plastic shell of the existing insert is unstable due to easy shaking of the existing insert in a die, and provides the new energy charging pile electrode insert, the positioning structure and the self-sensing positioning method thereof.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a new forms of energy fills electric pile electrode inserts, includes first electrically conductive piece and second electrically conductive piece, and first electrically conductive piece is the lamellar body of rectangle, and first electrically conductive piece and second electrically conductive piece integrated into one piece, first electrically conductive piece place face and second electrically conductive piece place face are equipped with the molding contained angle.

Preferably, the first conductive member is provided with two positioning holes at positions close to two ends in the length direction.

Preferably, the second conductive member is provided with two output end positioning holes.

The utility model provides a new forms of energy fills injection mold location structure of electric pile electrode, includes mould and lower mould, is equipped with two sets of die cavities on the lower mould, the die cavity symmetrical arrangement is on the length direction of lower mould, and the die cavity is including the inserts mounting groove and the chamber of moulding plastics that are used for fixing a position first electrically conductive piece, and inserts mounting groove corresponds with first electrically conductive piece, and the second electrically conductive piece is vertical to be set up, and the chamber of moulding plastics includes that lower mould and upper mould correspond the molding surface that the upper and lower reason formed of product formed, the front and back that the lower mould corresponds the electrically conductive piece of second are equipped with front portion structure of loosing core and rear portion structure of loosing core and the side structure of loosing core of electrically conductive side of second respectively, and the chamber of moulding plastics is sealed, front portion structure of loosing core, rear portion structure of loosing core and side structure of loosing core and the face of melting plastics contact are the moulding face.

If the second conductive member is referred to as the handle of the first conductive member, the injection mold is used for plastic wrapping of the handle. So-called injection molding cavities are thus arranged around the shank. The front core-pulling structure and the side core-pulling structure both core-pull in a mode of inclined guide posts, and the rear core-pulling structure drives the rear core-pulling structure to horizontally move on a guide surface connected with the lower die through an oil cylinder. The inclined guide pillar in the inclined guide pillar core pulling structure inclines outwards from top to bottom, the corresponding core pulling structure moves vertically in the process of separating an upper die from a lower die and is limited by the inclined guide pillar to generate horizontal movement, and the inclined guide pillar is separated from a product due to the inclined direction of the inclined guide pillar. The structure simplifies the driving mechanism inside the die, and reduces the cost and structure of the die.

Preferably, the insert mounting groove is provided with a protruding locating pin corresponding to the locating hole, and the locating pin is conical. Each angular point of the first conductive piece is guided to an oblique angle, the middle part is provided with a long groove in the length direction, and the insert mounting groove corresponds to the shape of the first conductive piece. The insert mounting groove is provided with a protruding lug at a position corresponding to the long groove, and the protruding lug is used for supporting the rear core pulling structure. The insert is accurately positioned through the positioning pins at the two sides, so that the precision reaches 0.02MM, and the final precision of the product is improved.

Preferably, the front core pulling structure is provided with an insert positioning structure. The structure is used for accurately positioning the insert on the vertical surface of the molding surface corresponding to the lower die, so that the insert can be positioned better.

Preferably, the insert positioning structure comprises a plurality of self-sensing positioning pins which are connected to the molding surface of the front core pulling structure in a telescopic manner, wherein the self-sensing positioning pins are connected with the time relay, the pressure sensor and the controller, and the self-sensing positioning pins are connected with the oil cylinder in a transmission manner. Since the self-sensing alignment pin is positioned at a position where the molten plastic needs to be encapsulated, when the self-sensing alignment pin does not shrink, the molten plastic will wrap around the self-sensing alignment pin and even fix the self-sensing alignment pin together. In order to avoid molten plastic. Setting the molten plastic to wrap the insert to a certain extent, and retracting the self-sensing positioning pin after the positioning of the plastic to the insert is completed. For this purpose, the self-sensing locating pin is located on the insert close to the superstructure.

Preferably, the rear core-pulling structure is pressed on the first conductive member, and the rear core-pulling structure corresponds to an avoidance groove for avoiding the positioning pin. The arrangement mode can better position the insert during plastic pouring, and avoid the insert from moving.

Preferably, the front core pulling structure is provided with an output end locating pin corresponding to the output end locating hole. The output end locating pin is inserted into the output end locating hole, so that the output end locating pin is prevented from moving, and rubber coating is not needed near the output end locating hole, so that the output end locating pin does not need to stretch and retract in a self-induction mode.

Preferably, the output end positioning pin and the positioning pin are arranged on two sides of the second conductive member in the length direction. This structure has promoted the stability to insert location.

A positioning method of an injection mold positioning structure of a new energy charging pile electrode comprises the following steps:

(1) The controller controls the upper die and the lower die to be matched;

(2) The controller outputs a signal to the time relay, the time relay sends a control signal to the oil cylinder, and the oil cylinder drives the self-sensing positioning pin to extend out and be abutted to the insert;

(3) When the molten plastic is filled to the height of the self-sensing locating pin, the self-sensing locating pin receives pressure and transmits the pressure to the pressure sensor, and the pressure sensor feeds back a corresponding signal to the controller;

(4) When the pressure corresponding signal reaches a certain value, the controller controls the oil cylinder to drive the self-sensing positioning pin to shrink to be flush with the molding surface.

When a mold closing signal is sent, the mold closing action of the upper mold and the lower mold and the action of extending the self-induction positioning pin can be synchronous or the mold closing action is delayed to the action of the self-induction positioning pin. Wherein, the positioning before the die assembly is adopted as a preferable scheme, and tiny vibration is inevitably generated in the die assembly starting stage, and the displacement of the insert can be avoided through the positioning in advance. When the self-induction locating pin senses pressure and sends a signal to the pressure sensor, the self-induction locating pin is driven by the controller, and the oil cylinder is driven by the electromagnetic valve to retract the self-induction locating pin.

Compared with the prior art, the invention has the beneficial effects that: (1) The device can accurately position the insert, and provides guarantee for the final precision of the product; (2) By positioning during the injection molding process, the effect of the extra pressure generated by the plastic on the insert position can be eliminated. Thereby ensuring accuracy.

Drawings

FIG. 1 is a schematic view of an insert of the present invention;

FIG. 2 is a schematic illustration of the product of the present invention;

FIG. 3 is a schematic view of the lower die and associated molding structure of the present invention;

FIG. 4 is a schematic view of a front block of the present invention;

FIG. 5 is a schematic view of the rear block of the present invention;

FIG. 6 is a perspective view of a lower die of the present invention;

FIG. 7 is a schematic diagram of embodiment 2 of the present invention;

in the figure: the novel plastic core-pulling device comprises a first conductive piece 1, a positioning hole 2, a positioning pin 3, a second conductive piece 4, an output end positioning hole 5, an output end positioning pin 6, a bent edge 7, a lower die 8, a cavity 9, an insert mounting groove 10, a front core-pulling structure 11, a rear core-pulling structure 12, a molding rod 13, an avoidance groove 14, a side core-pulling structure 15, a self-sensing positioning pin 16, an upper Fang Chouxin column 17, an inclined surface 18, a guide block 19, a front core-pulling block 20, a rear core-pulling block 21, a side core-pulling block 22, a groove 23, a linkage rod 24 and a wedge-shaped surface 25.

Detailed Description

The technical solution of the present invention is further specifically described below by means of specific embodiments in combination with the accompanying drawings, but the present invention can be implemented in a number of different ways defined and covered by the claims.

Example 1:

as shown in figures 1 and 2 of the drawings,

the utility model provides a new forms of energy fills electric pile electrode inserts, includes first electrically conductive piece 1 and second electrically conductive piece 4, and first electrically conductive piece 1 is the lamellar body of rectangle, and first electrically conductive piece 1 and second electrically conductive piece 4 integrated into one piece are equipped with the molding contained angle with the face that second electrically conductive piece 4 is located to the face that first electrically conductive piece 1 is located, and the molding contained angle is the right angle, and both are connected through the crimp 7 of circular arc shape. The first conductive piece 1 is provided with two positioning holes 2 at positions close to two ends in the length direction, and the second conductive piece 4 is provided with two output end positioning holes 5.

As shown in fig. 3 and 6, other parts of the mold, such as the upper mold plate, the lower mold plate 8, the top plate, etc., are conventional technical means in the art, and will not be described in detail. The utility model provides an injection mold location structure of new forms of energy fills electric pile electrode, includes mould and lower mould 8, is equipped with two sets of die cavities 9 on the lower mould 8, the die cavity 9 symmetrical arrangement is on the length direction of lower mould 8, and die cavity 9 is including the inserts mounting groove 10 and the chamber of moulding plastics that are used for fixing a position first electrically conductive piece 1, and inserts mounting groove 10 corresponds with first electrically conductive piece 1, and the vertical setting of second electrically conductive piece 4, moulding plastics the chamber and including the molding face that lower mould 8 and last mould correspond the upper and lower reason of product formation, the front and back that lower mould 8 corresponds second electrically conductive piece 4 are equipped with front portion core-pulling structure 11 and back core-pulling structure 12 respectively and the side core-pulling structure 15 of second electrically conductive piece 4 side, the chamber of moulding plastics is sealed, front portion core-pulling structure 11, back core-pulling structure 12 and side core-pulling structure 15 are the molding face with the face that melts plastics contact. The insert mounting groove 10 is provided with a convex positioning pin 3 at a position corresponding to the positioning hole 2, and the positioning pin 3 is conical. Each angular point of the first conductive element 1 is guided by an oblique angle, the middle part is provided with a long groove in the length direction, and the insert mounting groove 10 corresponds to the shape of the first conductive element 1. The insert mounting groove 10 has a protruding bump at a position corresponding to the long groove, and the protruding bump is used for supporting the rear core-pulling structure 12. The insert is accurately positioned through the positioning pins 3 at the two sides, so that the precision reaches 0.02MM, and the final precision of the product is improved. The locating pin is fixedly connected to the lower die plate connected with the lower die, and the lower die is provided with a through hole passing through the locating pin.

If the second conductive member 4 is referred to as the handle of the first conductive member 1, the injection mold is used to plastic wrap the handle. So-called injection molding cavities are thus arranged around the shank. The front core-pulling structure 11 and the side core-pulling structure 15 both pull cores through inclined guide posts, and the rear core-pulling structure 12 drives the rear core-pulling structure to horizontally move on a guide surface connected with the lower die 8 through an oil cylinder. The inclined guide pillar in the inclined guide pillar core pulling structure inclines outwards from top to bottom, and in the process of separating the upper die from the lower die 8, the corresponding core pulling structure moves vertically and is limited by the inclined guide pillar to generate horizontal movement, and the inclined guide pillar is separated from a product due to the inclined direction of the inclined guide pillar. The structure simplifies the driving mechanism inside the die, and reduces the cost and structure of the die.

As shown in fig. 4, the front core-pulling structure 11 is provided with an insert positioning structure. This structure is provided on the front core-pulling block 20 on the front core-pulling structure 11. The structure is used for positioning the insert on the vertical surface of the molding surface corresponding to the lower die 8, so that the insert can be positioned better. The insert positioning structure comprises a plurality of self-sensing positioning pins 16 which are connected on the molding surface of the front core-pulling structure 11 in a telescopic manner, wherein the self-sensing positioning pins 16 are electrically connected with a time relay, a pressure sensor and a controller, and the self-sensing positioning pins 16 are in transmission connection with an oil cylinder. Since the self-sensing alignment pin 16 is positioned where encapsulation of the molten plastic is required, the molten plastic will surround the self-sensing alignment pin 16 and even secure the self-sensing alignment pin 16 together when the self-sensing alignment pin 16 does not shrink. In order to avoid molten plastic. The molten plastic is set to encapsulate the insert to a certain extent, and the self-sensing locating pin 16 is retracted after the positioning and fixing of the plastic to the insert is completed. For this purpose, the self-sensing alignment pin 16 is provided on the insert near the superstructure.

As shown in fig. 5, the rear core-pulling structure 12 is press-fitted on the first conductive member 1, and the rear core-pulling structure 12 corresponds to the avoiding groove 14 of the avoiding positioning pin 3. The arrangement mode can better position the insert when the plastic is encapsulated, and avoid the insert from moving. The front core pulling structure 11 is fixedly connected with an output end locating pin 6 corresponding to the output end locating hole 5. The output end locating pin 6 is inserted into the output end locating hole 5, so that the movement of the output end locating pin is avoided, the locating precision is improved, and the encapsulation is not needed near the output end locating hole 5, so that the self-sensing telescopic function is not needed.

Two ends of the product injection molding parts on two sides of the exposed insert corresponding to the corresponding output end locating pin 6 are provided with clamping grooves 23, one groove 23 is molded through the upper Fang Chouxin column 17 to generate a groove 23, and the groove 23 on the other side is generated by the side core-pulling block 22 on the side core-pulling structure 15.

The rear core-pulling block 21 on the rear core-pulling structure 12 is connected with a shaping rod 13, the shaping rod 13 is inserted into a corresponding jack of the front core-pulling structure 11, the front core-pulling structure 11 is provided with a convex block body for bearing the jack, when plastic is filled, the plastic is wrapped on the peripheries of the shaping rod 13 and the block body, a pouring opening is formed due to the outer diameter difference between the block body and the shaping rod 13, one end of the opening, which is close to the front core-pulling structure 11, has a large aperture, and the other end of the opening has a small aperture, and the structure is used for positioning a corresponding product on other parts of the charging pile.

The upper die is obliquely and slidingly connected with an upper core-pulling column 17, and the upper Fang Chouxin column 17 is elastically connected in the upper die and is abutted against a product to form an injection cavity. The upper Fang Chouxin column 17 is provided with an inclined plane 18, a guide block 19 which is attached to the inclined plane 18 is arranged in the upper die, when the upper die and the lower die 8 relatively move, the upper Fang Chouxin column 17 stretches out relative to the upper die under the action of a spring, and the inclined plane 18 and the guide block 19 are used for driving the upper core-pulling column 17 to transversely move relative to the lower die 8 and separate from the molding surface.

The core pulling structure is driven by an oil cylinder or an inclined guide post except for the corresponding core pulling blocks, and the corresponding core pulling blocks are connected to corresponding sliding grooves on the lower die 8 in a sliding manner.

A positioning method of an injection mold positioning structure of a new energy charging pile electrode comprises the following steps:

(1) The controller controls the upper die and the lower die 8 to be matched;

(2) The controller outputs a signal to the time relay, the time relay sends a control signal to the oil cylinder, and the oil cylinder drives the self-sensing positioning pin 16 to extend out and be positioned on the insert;

(3) When the molten plastic is filled to the height of the self-sensing positioning pin 16, the self-sensing positioning pin 16 receives pressure and transmits the pressure to the pressure sensor, and the pressure sensor feeds back a corresponding signal to the controller;

(4) When the pressure corresponding signal reaches a certain value, the controller controls the oil cylinder to drive the self-sensing positioning pin 16 to shrink to be flush with the molding surface.

When the mold closing signal is sent, the mold closing operation of the upper and lower molds 8 and the operation of extending the self-sensing positioning pin 16 can be synchronized or the mold closing operation can be delayed to the operation of the self-sensing positioning pin 16. Wherein, the positioning before the die assembly is adopted as a preferable scheme, and tiny vibration is inevitably generated in the die assembly starting stage, and the displacement of the insert can be avoided through the positioning in advance. When the self-sensing positioning pin 16 senses pressure and sends a signal to the pressure sensor, the self-sensing positioning pin 16 is retracted by driving the oil cylinder through the electromagnetic valve driven by the controller.

Example 2:

in this embodiment, as shown in fig. 7, the difference is that:

the output end locating pin is elastically connected in the front core-pulling block, a slotted hole which is communicated with the output end locating pin and the self-sensing locating pin 16 is formed in the front core-pulling block, a linkage rod 24 is arranged in the slotted hole, two ends of the linkage rod 24 are conical, and two ends of the linkage rod 24 extend into holes of the two pins. The root of the output end locating pin is provided with a wedge-shaped surface 25 attached to the end of the linkage rod 24. The function of this structure lies in: the self-sensing locating pin abuts the end of the linkage rod 24 prior to locating the insert. Under the action of the elastic piece, the self-sensing positioning pin moves downwards against the action of the elastic piece. The output terminal locating pin does not extend fully. From the perceived locating pin extension, the linkage rod 24 moves toward the output locating pin first, and the output locating pin extends completely. Two pins are positioned on the insert. When the self-sensing dowel is retracted, the output dowel is also retracted a length. The conical shape of the end part of the linkage rod 24 enables the self-sensing positioning pin to displace to drive the linkage rod 24 to horizontally move, so that the guiding function of the wedge-shaped surface is achieved. The structure has the advantages that when the self-sensing locating pin does not apply pressure to the insert any more, only the output end locating pin at the other end applies force, a certain moment can be generated, the insert can displace under the lever principle, and when the self-sensing locating pin moves, the linkage output end locating pin moves a small distance in order to avoid the situation.

The above-described embodiments are merely preferred embodiments of the present invention, and the present invention is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.

Claims (8)

1. The injection mold positioning structure for the new energy charging pile electrode is characterized by being used for positioning a new energy charging pile electrode insert, wherein the new energy charging pile electrode insert comprises a first conductive piece and a second conductive piece, the first conductive piece is a rectangular sheet body, the first conductive piece and the second conductive piece are integrally formed, and a modeling included angle is formed between the surface of the first conductive piece and the surface of the second conductive piece; the injection mold positioning structure comprises an upper mold and a lower mold, wherein two groups of cavities are arranged on the lower mold, the cavities are symmetrically arranged in the length direction of the lower mold, each cavity comprises an insert mounting groove and an injection cavity for positioning a first conductive piece, each insert mounting groove corresponds to the first conductive piece, the second conductive piece is vertically arranged, each injection cavity comprises a molding surface formed by the lower mold and the upper mold corresponding to the upper and lower edges of products, front and rear surfaces of the lower mold corresponding to the second conductive piece are respectively provided with a front core-pulling structure, a rear core-pulling structure and a side core-pulling structure on the side surface of the second conductive piece, the surfaces of the front core-pulling structure, the rear core-pulling structure and the side core-pulling structure, which are in contact with molten plastics, are molding surfaces, and each front core-pulling structure is provided with an insert positioning structure; the front core-pulling structure and the side core-pulling structure both core-pull in a mode of inclined guide posts, and the rear core-pulling structure drives the rear core-pulling structure to horizontally move on a guide surface connected with the lower die through an oil cylinder.

2. The injection mold positioning structure of a new energy charging pile electrode according to claim 1, wherein the first conductive member is provided with two positioning holes at positions close to both ends in the length direction.

3. The injection mold positioning structure of the new energy charging pile electrode according to claim 2, wherein the second conductive member is provided with two output end positioning holes.

4. The injection mold positioning structure of the new energy charging pile electrode according to claim 1, wherein the insert mounting groove is provided with a convex positioning pin corresponding to the positioning hole, and the positioning pin is thin and thick.

5. The injection mold positioning structure of the new energy charging pile electrode according to claim 4, wherein the insert positioning structure comprises a plurality of self-sensing positioning pins which are connected to the molding surface of the front core-pulling structure in a telescopic manner, wherein the self-sensing positioning pins are electrically connected with the time relay, the pressure sensor and the controller, and the self-sensing positioning pins are in transmission connection with an oil cylinder.

6. The injection mold positioning structure of the new energy charging pile electrode according to claim 1, wherein the rear core-pulling structure is pressed on the first conductive member, and the rear core-pulling structure corresponds to an avoidance groove for avoiding the positioning pin.

7. The injection mold positioning structure of a new energy charging pile electrode according to any one of claims 4 to 6, wherein the front core-pulling structure is provided with an output end positioning pin corresponding to the output end positioning hole.

8. A positioning method of an injection mold positioning structure of a new energy charging pile electrode, comprising the injection mold positioning structure of a new energy charging pile electrode according to claim 7, comprising the steps of:

(1) The controller controls the upper die and the lower die to be matched;

(2) The controller outputs a signal to the time relay, the time relay sends a control signal to the oil cylinder, and the oil cylinder drives the self-sensing positioning pin to extend out and be abutted to the insert;

(3) When the molten plastic is injected to the height of the self-sensing locating pin, the self-sensing locating pin receives pressure and transmits the pressure to the pressure sensor, and the pressure sensor feeds back corresponding signals to the controller;

(4) When the pressure corresponding signal reaches a certain value, the controller controls the oil cylinder to drive the self-sensing positioning pin to shrink to be flush with the molding surface.

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