CN220923186U - Back-off demoulding structure of car lamp decoration - Google Patents

Abstract

The utility model discloses an inverted demolding structure of a car lamp decorating part, which comprises a lower demolding assembly formed in a lower module, wherein the lower demolding assembly comprises: the inner core pulling device comprises an inner core pulling device, an inner core pulling device and a lower die set, wherein the inner core pulling device is obliquely arranged in the lower die set and forms a molding surface matched with the lower surface of a car light decorating part, and a back-off part which is obliquely arranged downwards is arranged on the molding surface; the track-changing carriage is provided with a dragging matching part connected with the inner loose core, and the dragging matching part guides the normal movement of the inner loose core relative to the back-off part; and the driving element applies dragging force in relation to the sliding direction of the track-changing carriage, and can be selectively started to enable the inner core pulling to be separated from the car light decorating part or keep the car light decorating part in the lower module and synchronously move with the lower module.

Description

Back-off demoulding structure of car lamp decoration

Technical Field

The utility model relates to the technical field of mold equipment, in particular to a back-off demolding structure of a car lamp decorating part.

Background

At present, to car light decoration, especially car tail lamp has red brake lamp lid to and fixed frame and the printing opacity lid that is located the week side, and its shape is mostly curved surface and have the great radian of span, for guaranteeing the stability of its installation, need set up fixed connection post in the tip of car light decoration or its contour department for screw fixed connection.

The above-mentioned fixed connection post needs to set up the corresponding back-up shaping position in the mould shaping, this will lead to the difficulty of drawing of patterns after shaping, and, because it is by multiple material complex constitution, usually with car light decoration piece with polychrome injection moulding's mode production, namely in the mould multiple times shaping, the drawing of patterns mode in current design is usually set up oblique guide pillar on the cope match-die and drive the action of drawing of patterns of corresponding back-up shaping position, and to the car light decoration piece that needs many times shaping, if adopt above-mentioned cope match-die oblique guide pillar drawing of patterns, then during the primary shaping, the back-up drawing of patterns has just been accomplished to the fixed connection post on the car light decoration piece, the product has not accomplished secondary shaping yet this moment, when the car light decoration piece gets into secondary shaping, need additionally set up seal structure to this fixed connection post in order to prevent that the watering material of secondary injection moulding from getting into the fixed connection post, and result in product and mould damage, make secondary shaping can't carry out smoothly.

Disclosure of utility model

Aiming at the defects existing in the prior art, the utility model aims to provide an inverted buckle demoulding structure of a car lamp decorating part.

The technical aim of the utility model is realized by the following technical scheme: the utility model provides a back-off demoulding structure of car light decoration, includes the lower drawing of patterns subassembly that constitutes in lower module, lower drawing of patterns subassembly includes: the inner core pulling device comprises an inner core pulling device, an inner core pulling device and a lower die set, wherein the inner core pulling device is obliquely arranged in the lower die set and forms a molding surface matched with the lower surface of a car light decorating part, and a back-off part which is obliquely arranged downwards is arranged on the molding surface;

The track-changing carriage is provided with a dragging matching part connected with the inner loose core, and the dragging matching part guides the normal movement of the inner loose core relative to the back-off part;

And the driving element applies dragging force in relation to the sliding direction of the track-changing carriage, and can be selectively started to enable the inner core pulling to be separated from the car light decorating part or keep the car light decorating part in the lower module and synchronously move with the lower module.

Further, the dragging matching part comprises a guide groove formed on the end face of the track-changing carriage and a guide bar formed at one end of the inner core-pulling block, which is far away from the molding surface, and the guide bar keeps sliding in the guide groove and guides the inner core-pulling block to slide.

Further, the dragging matching part has an included angle A relative to the horizontal direction, the normal line of the back-off part has an included angle B relative to the horizontal direction, A is larger than B, and the included angle between the dragging matching part and the normal line of the back-off part is not right angle.

Further, the die assembly comprises an upper die set, wherein a locking block is arranged on the upper die set, and is locked on the rail-changing carriage in a die assembly state of the upper die set and the lower die set so as to keep the molding surface at a die assembly position, and the locking block is separated from the rail-changing carriage in a die opening state.

Further, a first inductive switch and a second inductive switch are arranged at the output end of the driving element to detect the action and the return position of the action end of the driving element.

Further, an adjusting groove is formed in the action surface of the inner core pulling and/or rail transferring carriage, and an adjusting block used for controlling an action gap is arranged on the adjusting groove.

Further, the ejector pin assembly is further arranged at the bottom of the lower die set in a penetrating hole for the ejector pin assembly to pass through in the inner core pulling mode, and the penetrating hole is arranged in relation to the inner core pulling action direction.

Further, the car light decoration has and keeps away from the back-off position and be curved surface that arc was extended, still accepted on the interior loose core with curved surface assorted shaping piece, the thimble subassembly wears to locate interior loose core and shaping piece and butt in the curved surface.

Further, the upper die set is provided with a primary die cavity and a secondary die cavity, the lower die set is provided with a universal die cavity matched with the primary die cavity and the secondary die cavity, the demolding assembly is arranged in the universal die cavity and forms part of the universal die cavity, the lower die set is rotatably arranged to keep the automobile decoration moving to the secondary die cavity, and the driving element is arranged to act at the secondary die cavity.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. The rail changing carriage realizes the rail changing of the force application direction of the driving element so as to meet the installation requirements of the driving element at different positions of the lower module, and the driving element is independently arranged and drives the rear part of the rail changing carriage, so that the driving of the rail changing carriage to the inner core pulling can be selectively controlled, the lamp decorating part is still kept in the lower module when the lamp decorating part is formed once and driven by the lower module to move to the secondary forming position, the influence on the back-off part finished in the primary forming is avoided, the reliability of the secondary forming of the lamp decorating part is ensured, and the forming quality of the back-off part in the primary forming is ensured;

2. Through set up different primary cavity and secondary type chamber on last module to set up two unanimous general die cavities on lower module, make the car light decoration when the secondary shaping is transported, the whole rotation of accessible lower module is in order to realize the position switching of car light decoration, need not to protect and shutoff measure once only to the back-off position of shaping again when the secondary shaping.

Drawings

FIG. 1 is a schematic cross-sectional view of the present utility model;

FIG. 2 is a schematic view of the structure of the lower stripper assembly of the present utility model;

FIG. 3 is a cross-sectional view of a lower stripper assembly of the present utility model;

FIG. 4 is a schematic view showing the structure of a vehicle lamp trim according to the present utility model;

FIG. 5 is a layout of a general cavity on a lower module of the present utility model;

FIG. 6 is a schematic view of a primary cavity, a secondary cavity and a trim piece of a vehicle lamp on an upper module of the present utility model;

FIG. 7 is a schematic diagram of the lower module of the present utility model;

FIG. 8 is an enlarged view of FIG. 1 at A;

In the figure: 1. a lower module; 1.1, a general cavity; 2. an upper module; 2.1, a primary cavity; 2.2, a secondary cavity;

3. A vehicle lamp ornament; 3.1, a transparent member; 3.2, a lamp ornament; 3.3, frame members; 3.4, a curved surface;

4. A lower stripper assembly; 4.1, internal core pulling; 4.11, molding surface; 4.12, a back-off part; 4.13, conducting bars; 4.14, through holes;

4.2, a track-changing carriage; 4.21, a guide groove; 4.3, a driving element; 4.4, dragging the matching part;

5. a locking block; 5.1, inclined plane;

6. A first inductive switch; 7. a second inductive switch; 8. an adjustment tank; 9. an adjusting block; 10. molding blocks;

11. A thimble assembly;

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It will be understood that, although the terms upper, middle, lower, top, end, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another for ease of understanding and are not used to define any directional or sequential limitation.

As shown in fig. 1-8, the back-off demolding structure of a car light decorating part 3 comprises an upper module 2 and a lower module 1, wherein a primary cavity 2.1 and a secondary cavity 2.2 are formed on the upper module 2, two universal cavities 1.1 matched with the primary cavity 2.1 and the secondary cavity 2.2 are formed on the lower module 1, at least one group of demolding components are arranged in each universal cavity 1.1, and the demolding components form the universal cavities 1.1 which are not separated, wherein the car light decorating part 3 consists of a white light-transmitting part, a red light decorating part 3.2 and a black frame part 3.3, a connecting column for fixing screws is arranged on at least the light decorating part 3.2, a back-off part 4.12 is formed in the universal cavity 1.1 in the lower module 1, and the demolding components are mainly used for demolding aiming at the back-off part 4.12 on the light decorating part 3.2.

The lower stripper unit 4 includes:

The inner loose core 4.1 is obliquely arranged in the lower die set 1 and forms a molding surface 4.11 matched with the lower surface of the car light decorating part 3, a back-off part 4.12 which is obliquely downwards arranged is arranged on the molding surface 4.11, and the arrangement direction of the inner loose core 4.1 corresponds to the normal direction of the back-off part 4.12;

The track-changing carriage 4.2, the track-changing carriage 4.2 is provided with a dragging matching part 4.4 connected with the inner loose core 4.1, and the dragging matching part 4.4 guides the normal movement of the inner loose core 4.1 relative to the back-off part 4.12;

The driving element 4.3 applies a dragging force with respect to the sliding direction of the track-changing carriage 4.2, and the driving element 4.3 is selectively activated to disengage the inner core 4.1 from the lamp trim 3 or to keep the lamp trim 3 in the lower module 1 and move synchronously with the lower module 1.

In the shaping process, lower module 1 is connected with the rolling disc to realize the rotation of relative module 2, its aim at will be at the car light decoration 3 between primary cavity 2.1 and the general die cavity 1.1 in left side through rotatory mode transport to secondary cavity 2.2, and actuating element 4.3 is set up to be in the action of secondary cavity 2.2 department, in the transportation process, car light decoration 3 can keep on general cavity 1.1 and transport along with the rotation of lower module 1, through independent actuating element 4.3 setting, make the car light decoration 3 of one shot forming can not break away from when the die sinking.

As an example, the black frame member 3.3 is used as the periphery to fix the light transmitting member and the lamp ornament 3.2, and in the one-step molding, the light transmitting member and the lamp ornament 3.2 spaced from each other are molded first, then the mold is opened, at this time, the mold release assembly does not act, the light transmitting member and the lamp ornament 3.2 move to the lower side of the secondary cavity 2.2 along with the rotation of the lower mold set 1, then mold closing is performed, the injection molding of the frame member 3.3 is performed, the frame member 3.3 fills and connects the space between the lamp ornament 3.2 and the light transmitting member, so that the frame member 3.3, the light transmitting member and the lamp ornament 3.2 form the integral lamp ornament 3, and the lamp ornament 3.2 forms the upper surface and the lower surface of the frame member 3.3, then the mold is opened, at this time, the mold release assembly acts, and the undercut portion 4.12 on the lamp ornament 3.2 is released.

After the secondary forming is finished, as an implementation mode for demolding the back-off part 4.12 of the demolding component, the back-off part 4.12 is arranged at the lower part of the lamp ornament 3.2 and is obliquely downwards arranged facing, the inner core-pulling 4.1 is arranged in an obliquely downwards gesture in a direction matched with the normal direction of the back-off part 4.12, the track-changing carriage 4.2 provides downward movement guidance for the inner core-pulling 4.1, and the track-changing carriage 4.2 is driven to horizontally move by the driving element 4.3 in the action process through the oblique track-changing carriage 4.4, and the inner core-pulling 4.1 is separated from the normal direction of the back-off part 4.12 under the guidance of the track-changing carriage 4.4.

In the embodiment, the lower part of the inner core-pulling 4.1 is supported on the lower die plate of the lower die set 1, the upper part of the inner core-pulling 4.1 is supported by the forming block 10, the forming block 10 is arranged in the lower die set 1 and forms a forming surface 4.11 of the lamp ornament 3.2 together with the inner core-pulling 4.1, wherein an inclined guide channel for restricting the demoulding direction of the inner core-pulling 4.1 is formed between the forming block 10 and the lower die plate, and the guide channel is arranged to be matched with the normal direction of the back-off part 4.12, so that the direction reliability of the inner core-pulling 4.1 in the demoulding process is ensured.

Further, the track-changing carriage 4.2 is arranged in the same direction as the output end of the driving element 4.3, in this embodiment the track-changing carriage 4.2 and the driving element 4.3 are preferably arranged horizontally, wherein the lower part of the forming block 10 and the lower die plate also have a horizontal guiding surface matching the track-changing carriage 4.2, which horizontal guiding surface constitutes a horizontal guiding channel for constraining the track-changing carriage 4.2.

As shown in fig. 3, specifically, the towing matching portion 4.4 includes a guide groove 4.21 formed on an end surface of the rail-changing carriage 4.2, and a guide bar 4.13 formed at an end of the inner core-pulling 4.1 facing away from the molding surface 4.11, the guide bar 4.13 is provided in a T-shaped cross section, and the guide bar 4.13 is kept sliding in the guide groove 4.21 and guides the inner core-pulling 4.1 to slide.

Through the improvement, the forming block 10 and the lower die plate guide the inner core pulling 4.1 and the track changing carriage 4.2, so that the stability and reliability of the action of the inner core pulling 4.1 and the track changing carriage 4.2 are ensured, and the inner core pulling 4.1 and the track changing carriage 4.2 are guided through the dragging matching part 4.4 with the T-shaped section, so that the demolding reliability of the back-off part 4.12 is improved, and the forming quality of the lamp ornament 3.2 is improved.

In order to further improve the movement fluency of the inner core-pulling 4.1 and the track-changing carriage 4.2, as shown in fig. 2 and 3, an adjusting groove 8 is arranged on the movement surface of the inner core-pulling 4.1 and/or the track-changing carriage 4.2, and an adjusting block 9 for controlling movement gaps is arranged on the adjusting groove 8, wherein the adjusting block 9 is used for controlling movement gaps between the movement surfaces of the inner core-pulling 4.1 and the track-changing carriage 4.2 and corresponding guide channels thereof, the adjusting block 9 can be fastened in a countersunk screw fixing mode, and the movement gaps are adjusted by adjusting the tightening degree of countersunk screws so as to reduce clamping stagnation of the movement of the inner core-pulling 4.1 and the track-changing carriage 4.2.

In other embodiments, the driving element 4.3 is selected as an oil cylinder to ensure the stability of the rail carriage 4.2 during mold closing and the power supply during mold release, and further, a locking block 5 is further provided on the upper mold set 2, the purpose of the locking block 5 being that in the mold closing state, the locking block 5 is locked on the back of the rail carriage 4.2 with the relative approach of the upper mold set 2 and the lower mold set 1 to keep the molding surface 4.11 in the mold closing position, and the locking block 5 is disengaged from the rail carriage 4.2 in the mold opening state.

As a further implementation mode of the track changing carriage 4.2 and the locking block 5, the matching surface between the track changing carriage 4.2 and the locking block 5 is set to be an inclined surface 5.1, so that the matching tightness between the locking block 5 and the track changing carriage 4.2 is ensured, further, the end surface of the locking block 5, which is away from the track changing carriage 4.2, is also arranged in an inclined surface 5.1, and the inclined surface 5.1 is propped against the lower template of the lower module 1, so that when the upper module 2 and the lower module 1 are matched, the locking block 5 reliably maintains the matched die position of the track changing carriage 4.2 under the close-fitting action of the inclined surfaces 5.1 on two sides.

It should be noted that the inclined planes 5.1 on both sides of the locking block 5 are also provided with an adjusting groove 8 and an adjusting block 9, so as to control the tight fit degree of the locking block 5 between the track-changing carriage 4.2 and the lower template.

As shown in fig. 2, the output end of the driving element 4.3 is provided with a first inductive switch 6 and a second inductive switch 7 to detect the action and the return position of the action end of the driving element 4.3, the first inductive switch 6 and the second inductive switch 7 are in signal connection with the control system of the injection molding machine of the mold, and send a position signal of the action end of the driving unit to prompt the back-off part 4.12 and the inner core-pulling part 4.1 to complete demolding, or the inner core-pulling part 4.1 is in place at the mold closing position, and the control system sends an instruction to perform the next action after receiving a correct signal to ensure that the mold does not collide with the mold due to unexpected failure action.

As shown in fig. 3, the pulling engagement portion 4.4 has an angle a in the horizontal direction, the normal line of the back-off portion 4.12 has an angle B in the horizontal direction, a is larger than B, the angle a is 50 ° for example, the normal line of the back-off portion 4.12, and the angle B of the inner loose core 4.1 in the horizontal direction is 30 °, and the angle between the normal line of the back-off portion 4.12 and the normal line of the back-off portion is not right angle for example, the angle between the normal line of the back-off portion 4.12 and the surface of the track-changing carriage is 80 °, and the sliding stroke of the inner loose core 4.1 on the normal line of the back-off portion 4.12 is actually controlled and reduced, and the angle is set, even if the driving element 4.3 and the lower module 1 enter the mold opening and the demolding operation at the same time, the inner loose core 4.1 can be quickly released without affecting the interference of the back-off portion 4.12 for the trim 3.

In a further embodiment, further explanation is made of the lamp trim 3.2 constituting the lamp trim 3, and the lamp trim 3 has a curved surface 3.4 extending in an arc shape away from the back-off portion 4.12, and as shown in a broken line block diagram in fig. 3, a molding block 10 matching the curved surface 3.4 is further received on the inner core back 4.1, and the molding block 10 is specifically received on an upper portion of the inner core back 4.1 and constitutes an oblique guide channel of an upper surface of the inner core back 4.1.

The bottom of the lower die set 1 is also provided with a thimble assembly 11 in a penetrating hole 4.14 for the thimble assembly 11 to pass through, in the ejection process, the thimble assembly 11 is arranged on the inner core 4.1 and the forming block 10 in a penetrating way and is abutted to the curved surface 3.4, and the control of the sliding stroke of the inner core 4.1 is benefited, so that the length of the penetrating hole 4.14 is reduced to a certain extent, and the ejection of the lamp ornament 3.2 is realized in the limited space of the inner core 4.1 and the lower die set 1.

It should be noted that the curved surface 3.4 at the upper part of the vehicle lamp decorating part 3 is arranged in a nearly horizontal posture and is supported on the top surface of the forming block 10, and the thimble assembly 11 is ejected out towards the curved surface 3.4 in an obliquely upward direction, so that the through hole 4.14 is nearly vertical to the length direction of the inner core-pulling 4.1, and the mode also facilitates the processing and manufacturing of the inner core-pulling 4.1.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims (9)

1. The utility model provides a back-off demoulding structure of car light decoration, its characterized in that includes module (2), constitutes lower drawing of patterns subassembly (4) in lower module (1), lower drawing of patterns subassembly (4) include: the inner core pulling device comprises an inner core pulling device (4.1), a lower die set (1) and a forming surface (4.11) matched with the lower surface of a car light decorating part (3), wherein a back-off part (4.12) which is obliquely downwards arranged is arranged on the forming surface (4.11);

A track-changing carriage (4.2), wherein a dragging matching part (4.4) connected with the inner loose core (4.1) is arranged on the track-changing carriage (4.2), and the dragging matching part (4.4) guides the normal movement of the inner loose core (4.1) relative to the back-off part (4.12);

And a driving element (4.3) for applying a dragging force with respect to the sliding direction of the track-changing carriage (4.2), wherein the driving element (4.3) is selectively started so as to separate the inner core pulling (4.1) from the car light decorating part (3) or keep the car light decorating part (3) in the lower module (1) and synchronously move with the lower module (1).

2. The reverse-buckling demolding structure for a vehicle lamp decorating part as claimed in claim 1, wherein: the dragging matching part (4.4) comprises a guide groove (4.21) formed on the end face of the track-changing carriage (4.2) and a guide bar (4.13) formed at one end of the inner loose core (4.1) deviating from the molding surface (4.11), wherein the guide bar (4.13) keeps sliding in the guide groove (4.21) and guides the inner loose core (4.1) to slide.

3. The reverse-buckling demolding structure for a vehicle lamp decorating part as claimed in claim 1, wherein: the drawing matching part (4.4) has an included angle A relative to the horizontal direction, the normal line of the back-off part (4.12) has an included angle B relative to the horizontal direction, A is larger than B, and the included angle between the drawing matching part and the normal line of the back-off part is not right angle.

4. The reverse-buckling demolding structure for a vehicle lamp decorating part as claimed in claim 1, wherein: the upper die set (2) is provided with a locking block (5), the locking block (5) is locked on the track-changing carriage (4.2) under the die assembly state of the upper die set (2) and the lower die set (1) so as to keep the molding surface (4.11) at the die assembly position, and the locking block (5) is separated from the track-changing carriage (4.2) under the die assembly opening state.

5. The reverse-buckling demolding structure for a vehicle lamp decorating part as claimed in claim 1, wherein: a first inductive switch (6) and a second inductive switch (7) are arranged at the output end of the driving element (4.3) so as to detect the action and the return position of the action end of the driving element (4.3).

6. The reverse-buckling demolding structure for a vehicle lamp decorating part as claimed in claim 1, wherein: an adjusting groove (8) is formed in the action surface of the inner core pulling (4.1) and/or the track-changing carriage (4.2), and an adjusting block (9) for controlling an action gap is arranged on the adjusting groove (8).

7. The reverse-buckling demolding structure for a vehicle lamp decorating part as claimed in claim 1, wherein: the bottom of the lower die set (1) is also provided with a thimble assembly (11) in a penetrating hole (4.14) for the thimble assembly (11) to pass through, and the penetrating hole (4.14) is arranged in relation to the action direction of the inner loose core (4.1).

8. The reverse-buckling demolding structure for a vehicle lamp trim piece according to claim 7, wherein: the car light decoration (3) has curved surface (3.4) that keep away from back-off position (4.12) and be the arc extension, still accept on interior loose core (4.1) with curved surface (3.4) assorted shaping piece (10), thimble subassembly (11) wear to locate interior loose core (4.1) and shaping piece (10) and butt in curved surface (3.4).

9. The reverse-buckling demolding structure for a vehicle lamp decorating part as claimed in claim 1, wherein: the upper die set (2) is provided with a primary die cavity (2.1) and a secondary die cavity (2.2), the lower die set (1) is provided with a universal die cavity (1.1) matched with the primary die cavity (2.1) and the secondary die cavity (2.2), the demolding assembly is arranged in the universal die cavity (1.1) and forms part of the universal die cavity (1.1), the lower die set (1) is rotatably arranged to keep the automobile decoration to move to the secondary die cavity (2.2), and the driving element (4.3) is arranged to act at the secondary die cavity (2.2).