CN113246404A

CN113246404A - Forming die for vehicle door interior trim part

Info

Publication number: CN113246404A
Application number: CN202110719518.0A
Authority: CN
Inventors: 叶哲男; 施孝剑; 丁波
Original assignee: Ningbo Mingfei Auto Parts Co ltd
Current assignee: NINGHAI FIRST-RATE INJECTION MOULD Co.,Ltd.
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-08-13
Anticipated expiration: 2041-06-28
Also published as: CN113246404B

Abstract

The application discloses a forming die for an interior trim part of a car door, which comprises a fixed die plate and a movable die plate, wherein a cavity for forming the interior trim part of the car door is arranged between the fixed die plate and the movable die plate; the forming slide block is arranged on the movable mould plate in a sliding mode along the front-back direction, the front end of the forming slide block extends to the cavity, and a first linear driving device used for driving the forming slide block to slide is arranged on the movable mould plate; the first core pulling assembly is arranged in the forming sliding block, the first core pulling assembly penetrates through the forming sliding block and is suitable for a forming installation cavity and a clamping groove, and the fixed die plate is suitable for driving the first core pulling assembly to act and pull core from the clamping groove during die opening. Has the advantages of compact structure, smooth demoulding and low cost.

Description

Forming die for vehicle door interior trim part

Technical Field

The application relates to the field of molds, in particular to an automobile ornament forming mold.

Background

As shown in fig. 1, a door trim 100 is formed by injection molding, and the difficulty of injection molding is demolding of a plurality of cavities and deep holes with different orientations on the trim. Specifically, the method comprises the following steps: the vehicle door interior part 100 is provided with an installation cavity 101 for installing a vehicle window button, and two sides of the bottom of the installation cavity 101 are also provided with clamping grooves 102; a first mounting hole 103 and a second mounting hole 104 for mounting a door handle are respectively formed at two ends of the door trim 100; the side surface of the door trim 100 is recessed inwards and is provided with a plurality of abdicating through holes 105; two mounting columns 106 for fixing are further convexly arranged on the side face of the vehicle door interior trim part 100, and fixing holes 107 are formed in the mounting columns 106. Because the orientations of the parts are not completely consistent, the die cannot be demoulded at one time, and the design difficulty of the die is increased.

Therefore, how to design a mold for forming an interior trim part of a vehicle door to overcome the above problems is a problem to be solved by those skilled in the art.

Disclosure of Invention

An object of this application is to provide a compact structure, and the drawing of patterns is smooth and easy, with low costs interior trim part forming die of door.

Another aim at of this application provides a drawing of patterns is high-efficient, and the linkage is reliable, arranges rationally, and the second subassembly of loosing core that the shaping quality is high.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: the utility model provides a door interior trim part forming die, includes fixed die plate and movable mould board, the fixed die plate with the die cavity that becomes door interior trim has between the movable mould board, the fixed die plate with the movable mould board rear side is provided with the mechanism of jointly loosing core, the mechanism of jointly loosing core is including shaping slider, the first subassembly of loosing core, the second subassembly of loosing core and the third subassembly of loosing core.

The forming slide block is arranged on the movable mould plate in a sliding mode along the front-back direction, the front end of the forming slide block extends to the cavity, and a first linear driving device used for driving the forming slide block to slide is arranged on the movable mould plate; the first core pulling assembly is arranged in the forming sliding block, penetrates through the forming sliding block and is suitable for forming an installation cavity and a clamping groove, and the fixed die plate is suitable for driving the first core pulling assembly to act and pulling cores from the clamping groove when the die is opened; the forming slider downwardly extends to form a first connecting block, the second core pulling assembly and the third core pulling assembly are fixedly arranged on the first connecting block, the second core pulling assembly is suitable for forming mounting columns and fixing holes, the third core pulling assembly is suitable for forming yielding through holes, and the forming slider is backwards core-pulling and is suitable for driving the second core pulling assembly and the third core pulling assembly to downwardly core.

Preferably, the first core pulling assembly comprises a first fixed block, a first core block, an advance slide block, a first inclined guide post, a guide block, an advance core block and a guide rod, the first fixed block is fixedly arranged in the forming slide block, the first core block is fixedly arranged at the front end of the first fixed block and is suitable for forming the mounting cavity, the advance slide block is arranged in the forming slide block in a sliding manner along the front-back direction, the upper section of the first inclined guide post is fixedly arranged on the fixed die plate, the lower section of the first inclined guide post is connected with the advance slide block in a sliding manner, the first inclined guide post inclines forwards and backwards from top to bottom, the guide block is fixedly arranged on the advance slide block and penetrates through the first fixed block forwards, a first inclined guide rail inclining from the front to the back from the middle to two sides is arranged on the guide block, and the advance core block is arranged on the first inclined guide rail in a sliding manner, the advancing core block is arranged between the first fixing block and the first core block in a sliding mode, the guide rods penetrate through the guide blocks and the advancing core block respectively, the guide rods are perpendicular to the sliding direction of the guide blocks, and protruding blocks are arranged on the advancing core block and suitable for forming the clamping grooves. When the mold is opened, the fixed mold plate is suitable for driving the advancing slide block and the guide block to slide backwards through the first inclined guide post, and the guide block drives the advancing core block to loose the core from the clamping groove in advance under the guiding action of the first inclined guide rail and the guide rod.

Because the orientation of draw-in groove and installation cavity is perpendicular, can not directly loose core along fore-and-aft direction. Therefore, the scheme is provided with the first core pulling assembly, the core pulling from the clamping groove is realized by utilizing the motion of the fixed die plate firstly, and the core pulling from the mounting cavity is realized by utilizing the synchronous sliding of the forming sliding block, so that the demoulding of the clamping groove and the mounting cavity is completed.

As an improvement, the first core pulling assembly further comprises a reset elastic piece, and the reset elastic piece is arranged between the forming sliding block and the advancing sliding block and can force the advancing sliding block to slide forwards. The arrangement of the reset elastic piece ensures that the slide block, the guide block and the core block can reset to the injection molding position in advance during die assembly.

Preferably, the second core pulling assembly comprises a second fixed block and a second core block, the second fixed block is fixedly arranged on the first connecting block and extends forwards, a second inclined guide rail inclined from bottom to top from front to back is arranged on the second fixed block, the second core block is arranged on the second inclined guide rail in a sliding mode, the second core block is arranged in the movable die plate in a sliding mode, and the second core block extends upwards and is suitable for forming the mounting column and the fixing hole. When the forming slide block slides backwards to loose the core, the second fixing block slides backwards, and the second core block looses the core downwards from the mounting column and the fixing hole under the guiding action of the second inclined guide rail.

Because the erection column and the anchor eye are located door interior trim side, and with the orientation nonconformity of installation cavity, generally need independently loose core. The second core pulling assembly and the forming sliding block are used in the scheme, core pulling of the mounting column and the fixing hole can be achieved synchronously through sliding of the forming sliding block, and core pulling is conducted without arranging an inclined guide column or a linear driving device.

As an improvement, the second core block comprises a bottom rod, a core sleeve and a core rod, the bottom rod is slidably arranged on the second inclined guide rail, the core sleeve is arranged at the upper end of the bottom rod, the upper end of the core sleeve is suitable for forming the mounting column, the core rod is arranged on the bottom rod and penetrates through the core sleeve, and the upper end of the core rod is suitable for forming the fixing hole; the bottom rod is suitable for pulling the core sleeve and the core rod downwards to perform core pulling, and a delay gap is formed between the bottom rod and the core sleeve. When the second core block is used for pulling the core rod, the bottom rod firstly pulls the core rod downwards to pull the core, meanwhile, the delay gap is gradually reduced, and when the delay gap is zero, the bottom rod pulls the core sleeve downwards to pull the core.

The mounting columns and the fixing holes have larger depths, the second core block needs to be stretched into the mounting columns and formed, so that the mounting columns and the fixing holes have large film sticking force, and if core pulling and demolding are performed in one step, the conditions of film sticking, poor demolding, product deformation and the like are easily caused. Therefore, the second core block adopts a split structure, and the step-by-step core pulling function of firstly pulling the core rod and then pulling the core sleeve can be realized by using the time delay interval. The core pulling is carried out in two steps in the same core pulling direction, so that the adhesive sticking force during core pulling at each time can be reduced, and the conditions of adhesive sticking, poor demoulding, product deformation and the like are effectively avoided.

In a further improvement, the core bar is slidably arranged on the bottom bar, a first magnetic block is fixedly arranged at the lower end of the core bar, a second magnetic block and a third magnetic block are arranged on the second fixed block, the first magnetic block and the second magnetic block are magnetically repelled, and the first magnetic block and the third magnetic block are magnetically attracted; when the die is closed, the first magnetic block is aligned with the second magnetic block, and the second magnetic block can force the core rod and the first magnetic block to slide upwards and abut against the forming slide block; when the second core block is used for pulling the core, the second fixing block slides backwards, so that the second magnetic block is gradually far away from the first magnetic block, the third magnetic block is gradually close to the first magnetic block, when the delay gap is zero, the third magnetic block is aligned with the first magnetic block, and the third magnetic block can force the core rod and the first magnetic block to slide downwards and abut against the second fixing block.

The core rod is abutted against the forming slide block to form the fixing hole, but due to the existence of errors of die machining, assembly, operation and the like, a gap is easily formed between the core rod and the forming slide block, so that flash is generated during injection molding. Therefore, the scheme is provided with the slidable core rod, and the repulsion action between the first magnetic block and the second magnetic block is utilized, so that the upper end of the core rod can always abut against the forming sliding block, the mold processing, assembling and running errors are compensated, no gap exists between the core rod and the forming sliding block, the generation of flash during injection molding is reduced, and even the generation of flash is completely eliminated. It is worth mentioning that when the mold is closed, the first magnetic block and the second magnetic block are aligned and the magnetism is repelled to form a magnetic spring structure, so that the first magnetic block and the second magnetic block can be replaced by a common spring, and the function of removing the flash can be realized.

The bottom rod overcomes the magnetic force of the first magnetic block and the second magnetic block and pulls the core rod to perform demolding under the sliding guiding action of the second fixed block, in the process, the second magnetic block is gradually far away from the first magnetic block, the third magnetic block is gradually close to the first magnetic block until the third magnetic block attracts the first magnetic block and the core rod to slide downwards, so that after the core rod is completely loose core and separated from the fixed hole, the bottom rod pulls the core sleeve to perform core-pulling demolding. The third magnetic block and the first magnetic block are arranged in an attractive mode, the core rod can be quickly pulled out, the die bonding force during core pulling of the core sleeve is further reduced, the core rod can be prevented from influencing the normal core pulling of the core sleeve, and the core pulling is smoother.

As an improvement, magnetic shielding shells with openings at the upper ends are arranged between the second magnetic block and the second fixed block and between the third magnetic block and the second fixed block. The magnetic shielding shell can reduce the magnetization of the second fixed block by the second magnetic block and the third magnetic block, so that the acting force between the first magnetic block and the second magnetic block and between the first magnetic block and the third magnetic block is more accurate and controllable.

Preferably, the upper end of the bottom rod is provided with a T-shaped groove, the lower end of the core sleeve is provided with a T-shaped column, the bottom rod and the core sleeve are connected through the limiting matching of the T-shaped groove and the T-shaped column, and the height of the T-shaped groove is larger than the thickness of the T-shaped column, so that the delay gap between the bottom rod and the core sleeve is realized. The upper structure is simple and reliable and the installation is convenient.

Preferably, a sliding groove is formed in the bottom rod, a limiting block is arranged at the lower end of the core rod, and the bottom rod and the core rod are connected through the limiting fit of the sliding groove and the limiting block. The upper structure is simple and reliable and the installation is convenient.

Preferably, the third core pulling assembly comprises a third fixed block and a third core block, the third fixed block is fixedly arranged on the first connecting block and extends forwards, a third inclined guide rail inclined from front to back from bottom to top is arranged on the third fixed block, the third core block is arranged on the third inclined guide rail in a sliding manner, the third core block is arranged in the movable template in a sliding manner, and the third core block extends upwards and is suitable for forming the abdicating through hole; when the forming slide block slides backwards to loose the core, the third fixing block slides backwards, and the third core block pulls downwards from the abdicating through hole under the guiding action of the third inclined guide rail.

Because the through-hole of stepping down is located door interior trim part side, and is inconsistent with the orientation of installation cavity, generally need independently loose core. The third core pulling assembly and the forming sliding block are used in the scheme, core pulling of the abdicating through holes can be synchronously achieved through sliding of the forming sliding block, and core pulling is conducted without arranging an inclined guide pillar or a linear driving device.

Further, a first demoulding mechanism is arranged on the front sides of the fixed mould plate and the movable mould plate, the first demoulding mechanism comprises a first sliding block, a fourth fixed block and a fourth core block, the first sliding block is arranged on the movable mould plate in a sliding mode along the front-back direction, the rear end of the first sliding block extends to the cavity, a second inclined guide pillar is arranged in the first sliding block in a sliding mode, the upper end of the second inclined guide pillar is fixedly arranged on the fixed mould plate, the second inclined guide pillar inclines forwards from top to bottom from back, a second connecting block extends downwards from the first sliding block, the fourth fixed block is fixedly arranged on the second connecting block and extends backwards, a fourth inclined guide rail inclining from front to back from top to bottom is arranged on the fourth inclined guide rail in a sliding mode, and the fourth core block is arranged in the movable mould plate in a sliding mode, the fourth core block extends upwards and is suitable for forming a first mounting hole; when the die is opened, the fixed die plate is suitable for driving the first sliding block to slide forwards for core pulling through the second inclined guide post, so as to drive the fourth fixed block to slide forwards, and the fourth core block is downwards pulled from the first mounting hole under the guiding action of the fourth inclined guide rail.

The core pulling action of the first sliding block can be used for linking the fourth core block to core the first mounting hole, and the core pulling is carried out without arranging an additional inclined guide pillar or a linear driving device, so that the internal structure of the mold is simplified, and the core pulling efficiency is improved.

Furthermore, a second demoulding mechanism is further arranged on the front sides of the fixed mould plate and the movable mould plate, the second demoulding mechanism comprises a second sliding block and a fifth core block, the second sliding block is arranged on the movable mould plate in a sliding mode along the front-back direction, a second linear driving device for driving the second sliding block to slide is further arranged on the movable mould plate, a fifth inclined guide rail inclined from front to back from top to bottom is arranged on the second sliding block, the fifth core block is arranged on the fifth inclined guide rail in a sliding mode, the fifth core block is arranged in the movable mould plate in a sliding mode, and the fifth core block extends upwards and is suitable for forming a second mounting hole; when the mold is opened, the second linear driving device drives the second sliding block to slide forwards, and the fifth core block is pulled downwards from the second mounting hole under the guiding action of the fifth inclined guide rail.

Because the second mounting hole is located the door interior trim distal end, can't carry out the linkage and loose the core, consequently set up second linear drive device, utilize the second slider to slide and drive the downward motion of fifth core piece and loose the core alone it.

Compared with the prior art, the beneficial effect of this application lies in:

(1) the combined core-pulling mechanism is integrated with a forming sliding block, a first core-pulling assembly, a second core-pulling assembly and a third core-pulling assembly, and can drive all assemblies to synchronously act only by utilizing a single first linear driving device, so that core pulling of an installation cavity, a clamping groove, an installation column, a fixed hole and a yielding through hole is realized. The integrated arrangement makes the die structure simpler and more compact, and reduces the overall manufacturing cost of the die.

(2) This scheme still looses core the structure of subassembly to the second and improves the design, makes under its prerequisite of loosing core that can link, can reduce the viscose membrane power, reduce the overlap, makes it loose core more smoothly, and the shaping quality is higher.

Drawings

Fig. 1 and 2 are perspective views of a door trim formed according to a preferred embodiment of the present application.

Fig. 3 is a perspective view of a preferred embodiment according to the present application, and identifies six directions, front-back, left-right, up-down.

FIG. 4 is a half sectional view (taken along the axial direction of the first core back assembly) of FIG. 3 according to a preferred embodiment of the present application.

Fig. 5 is a view of the internal structure after the stationary platen is hidden according to a preferred embodiment of the present application.

Fig. 6 is a view of the positional relationship of the combination core-pulling mechanism, the first ejector mechanism, the second ejector mechanism and the door trim according to a preferred embodiment of the present application.

FIG. 7 is a front view of FIG. 6 in accordance with a preferred embodiment of the present application.

FIG. 8 is a perspective view of a co-coring mechanism according to a preferred embodiment of the present application.

FIG. 9 is a front view of FIG. 8 in accordance with a preferred embodiment of the present application.

FIG. 10 is a cross-sectional view taken along the line A-A in FIG. 9, according to a preferred embodiment of the present application.

Fig. 11 is a perspective view of the first core back assembly according to a preferred embodiment of the present application.

Fig. 12 is a partially exploded view of the first core back assembly according to a preferred embodiment of the present application.

FIG. 13 is a top view of the first core back assembly in accordance with a preferred embodiment of the present application.

FIG. 14 is a cross-sectional view taken along the direction B-B in FIG. 13, in accordance with a preferred embodiment of the present application.

FIG. 15 is a cross-sectional view taken along the direction C-C in FIG. 13, in accordance with a preferred embodiment of the present application.

Fig. 16 is a perspective view of a guide block according to a preferred embodiment of the present application.

Fig. 17 is a perspective view of an advance core block according to a preferred embodiment of the present application.

Fig. 18 is a perspective view of the second core back assembly according to a preferred embodiment of the present application.

FIG. 19 is a top view of the second core back assembly in a preferred embodiment according to the present application.

FIG. 20 is a cross-sectional view taken along the direction D-D of FIG. 19 with the second core back assembly in a mold closed position according to a preferred embodiment of the present application.

FIGS. 21 and 22 are schematic core pulling processes of the second core pulling assembly according to a preferred embodiment of the present application.

FIG. 23 is an enlarged view at E of FIG. 22 in accordance with a preferred embodiment of the present application.

Figure 24 is a half cross-sectional view of the second core block according to a preferred embodiment of the present application.

Fig. 25 is an exploded view of the second core block in a preferred embodiment according to the present application.

Fig. 26 is a perspective view of a first stripper mechanism according to a preferred embodiment of the present application.

Fig. 27 is a perspective view of a second stripper mechanism according to a preferred embodiment of the present application.

In the figure: 100. a door trim; 101. a mounting cavity; 102. a card slot; 103. a first mounting hole; 104. a second mounting hole; 105. a yielding through hole; 106. mounting a column; 107. a fixing hole; 10. fixing a template; 20. moving the template; 30. a cavity; 40. a combined core-pulling mechanism; 50. a first demolding mechanism; 60. a second demolding mechanism; 1. forming a sliding block; 11. a first linear drive; 12. a first connection block; 2. a first core pulling assembly; 21. a first fixed block; 22. a first core block; 23. advancing the sliding block; 24. a first inclined guide post; 25. a guide block; 26. advancing the core block; 27. a guide bar; 28. a restoring elastic member; 251. a first inclined guide rail; 261. a bump; 3. a second core pulling assembly; 31. a second fixed block; 32. a second core block; 33. a first magnetic block; 34. a second magnetic block; 35. a third magnetic block; 311. a second inclined guide rail; 321. a bottom bar; 322. a core sleeve; 323. a core bar; 341. a magnetic shield case; 320. a delay gap; 3211. a T-shaped groove; 3212. a chute; 3221. a T-shaped column; 3231. a limiting block; 4. a third core pulling assembly; 41. a third fixed block; 42. a third core block; 411. a third inclined guide rail; 5. a first slider; 51. a second inclined guide post; 52. a second connecting block; 6. a fourth fixed block; 61. a fourth inclined guide rail; 7. a fourth core block; 8. a second slider; 81. a second linear drive; 82. a fifth inclined guide rail; 9. and a fifth core block.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1 and 2, a preferred embodiment of the present application is an injection molded door trim 100, which has a difficulty in demolding a plurality of differently oriented cavities and deep holes in the trim. Specifically, the method comprises the following steps: the vehicle door interior part 100 is provided with an installation cavity 101 for installing a vehicle window button, and two sides of the bottom of the installation cavity 101 are also provided with clamping grooves 102; a first mounting hole 103 and a second mounting hole 104 for mounting a door handle are respectively formed at two ends of the door trim 100; the side surface of the door trim 100 is recessed inwards and is provided with a plurality of abdicating through holes 105; two mounting columns 106 for fixing are further convexly arranged on the side face of the vehicle door interior trim part 100, and fixing holes 107 are formed in the mounting columns 106.

The present application relates to a molding mold shown in fig. 3 to 27, and a preferred embodiment of the present application includes a fixed mold plate 10 and a movable mold plate 20, a cavity 30 for molding an inner trim 100 of a door is formed between the fixed mold plate 10 and the movable mold plate 20, a combined core-pulling mechanism 40 is disposed at the rear side of the fixed mold plate 10 and the movable mold plate 20, and a first demolding mechanism 50 and a second demolding mechanism 60 are disposed at the front side of the fixed mold plate 10 and the movable mold plate 20. Since the molded door trim 100 includes the left and right parts, the present embodiment also includes two left and right cavities 30, and two sets of the combined core-pulling mechanism 40, the first demolding mechanism 50, and the second demolding mechanism 60 are provided correspondingly to mold the left and right parts of the door trim 100 at the same time.

As shown in fig. 8 to 10, the combined core pulling mechanism 40 of the present embodiment includes a forming slide 1, a first core pulling assembly 2, a second core pulling assembly 3, and a third core pulling assembly 4. The forming slide block 1 is arranged on the movable mould plate 20 in a sliding manner along the front-back direction, the front end of the forming slide block 1 extends to the cavity 30, and the movable mould plate 20 is provided with a first linear driving device 11 for driving the forming slide block 1 to slide; the first core pulling assembly 2 is arranged in the forming slide block 1, the first core pulling assembly 2 penetrates through the forming slide block 1 and is suitable for forming the mounting cavity 101 and the clamping groove 102, and the fixed die plate 10 is suitable for driving the first core pulling assembly 2 to act and pulling cores from the clamping groove 102 when the die is opened; the forming slide block 1 extends downwards to form a first connecting block 12, the second core pulling assembly 3 and the third core pulling assembly 4 are fixedly arranged on the first connecting block 12, the second core pulling assembly 3 is suitable for forming the mounting column 106 and the fixing hole 107, the third core pulling assembly 4 is suitable for forming the abdicating through hole 105, and the forming slide block 1 is used for driving the second core pulling assembly 3 and the third core pulling assembly 4 to pull cores downwards.

As shown in fig. 11 to 17, the first core-pulling assembly 2 of this embodiment includes a first fixed block 21, a first core block 22, an advance slider 23, a first inclined guide post 24, a guide block 25, an advance core block 26, a guide rod 27 and a return elastic member 28, the first fixed block 21 is fixedly disposed in the forming slider 1, the first core block 22 is fixedly disposed at the front end of the first fixed block 21 and is suitable for forming the mounting cavity 101, the advance slider 23 is slidably disposed in the forming slider 1 along the front-back direction, the upper section of the first inclined guide post 24 is fixedly disposed on the fixed mold plate 10, the lower section of the first inclined guide post 24 is slidably connected with the advance slider 23, the first inclined guide post 24 is inclined from top to bottom, the guide block 25 is fixedly disposed on the advance slider 23 and passes through the first fixed block 21 forward, a first inclined guide rail that is inclined from the middle to both sides from front to back is disposed on the guide block 25, the advance core block 26 is slidably disposed on the first inclined guide rail 251, the advancing core block 26 is arranged between the first fixing block 21 and the first core block 22 in a sliding mode, the guide rod 27 penetrates through the guide block 25 and the advancing core block 26 respectively, the guide rod 27 is perpendicular to the sliding direction of the guide block 25, a lug 261 is arranged on the advancing core block 26, the lug 261 is suitable for forming the clamping groove 102, and the return elastic piece 28 is arranged between the forming slide block 1 and the advancing slide block 23 and can force the advancing slide block 23 to slide forwards. When the mold is opened, the fixed mold plate 10 is suitable for driving the advancing slide block 23 and the guide block 25 to slide backwards through the first inclined guide column 24, and the guide block 25 drives the advancing core block 26 to advance core pulling from the clamping groove 102 under the guiding action of the first inclined guide rail 251 and the guide rod 27. In this embodiment, there are four card slots 102, so the guide blocks 25 are provided with the first inclined guide rails 251 on the front, rear, upper and lower sides, and four advance core blocks 26 are correspondingly provided. As can be seen from fig. 15, the front end section of the guide block 25 is in an isosceles trapezoid structure expanding from front to back.

Because the orientation of the clamping groove 102 and the installation cavity 101 is vertical, the core can not be directly pulled back along the front-back direction. Therefore, the first core pulling assembly 2 is arranged in the embodiment, the core pulling from the clamping groove 102 is realized by the movement of the fixed die plate 10, and the core pulling from the mounting cavity 101 is realized by the synchronous sliding of the forming slide block 1, so that the demolding of the clamping groove 102 and the mounting cavity 101 is completed.

As shown in fig. 18 to 25, the second core back assembly 3 of the present embodiment includes a second fixing block 31 and a second core block 32, the second fixing block 31 is fixedly disposed on the first connecting block 12 and extends forward, a second inclined rail 311 inclined from front to back from bottom to top is disposed on the second fixing block 31, the second core block 32 is slidably disposed on the second inclined rail 311, the second core block 32 is slidably disposed in the movable mold plate 20, and the second core block 32 extends upward and is adapted to mold the mounting column 106 and the fixing hole 107. When the forming slide 1 slides backwards to draw core, the second fixed block 31 slides backwards, and the second core block 32 is drawn downwards from the mounting column 106 and the fixed hole 107 under the guiding action of the second inclined guide rail 311.

In order to reduce the adhesive force during core pulling at each time, the second core block 32 of the embodiment adopts a split structure, so that the step-by-step core pulling function can be realized, and the method is specific: the second core block 32 comprises a bottom rod 321, a core sleeve 322 and a core rod 323, wherein the bottom rod 321 is slidably arranged on the second inclined guide rail 311, the core sleeve 322 is arranged at the upper end of the bottom rod 321, the upper end of the core sleeve 322 is suitable for molding the mounting column 106, the core rod 323 is arranged on the bottom rod 321 and penetrates through the core sleeve 322, and the upper end of the core rod 323 is suitable for molding the fixing hole 107; the bottom rod 321 is suitable for pulling the core sleeve 322 and the core rod 323 downwards for core pulling, and a delay gap 320 is arranged between the bottom rod 321 and the core sleeve 322. When the second core block 32 is used for pulling the core, the bottom rod 321 firstly pulls the core rod 323 downwards for pulling the core, meanwhile, the delay gap 320 is gradually reduced, and when the delay gap 320 is zero, the bottom rod 321 then pulls the core sleeve 322 downwards for pulling the core.

In order to reduce the generation of flash and ensure the smoothness of core pulling, the core bar 323 of the embodiment is slidably disposed on the bottom bar 321, the first magnetic block 33 is fixedly disposed at the lower end of the core bar 323, the second magnetic block 34 and the third magnetic block 35 are disposed on the second fixed block 31, the first magnetic block 33 and the second magnetic block 34 are magnetically repelled, and the first magnetic block 33 and the third magnetic block 35 are magnetically attracted. As shown in fig. 20, when the mold is closed, the first magnetic block 33 is aligned with the second magnetic block 34, and the second magnetic block 34 can force the core bar 323 and the first magnetic block 33 to slide upwards and to abut against the molded slider 1; as shown in fig. 21 and 22, when the second core block 32 is used for core pulling, the second fixed block 31 slides backwards, so that the second magnetic block 34 gradually moves away from the first magnetic block 33, the third magnetic block 35 gradually approaches the first magnetic block 33, and when the delay gap 320 is zero, the third magnetic block 35 aligns with the first magnetic block 33, and the third magnetic block 35 can force the core bar 323 and the first magnetic block 33 to slide downwards and abut against the second fixed block 31.

In this embodiment, magnetic shielding cases 341 with openings at upper ends are disposed between the second and third

magnetic blocks

34 and 35 and the second fixed block 31. The upper end of the bottom rod 321 is provided with a T-shaped groove 3211, the lower end of the core sleeve 322 is provided with a T-shaped column 3221, the bottom rod 321 and the core sleeve 322 are connected through the limiting matching of the T-shaped groove 3211 and the T-shaped column 3221, and the height of the T-shaped groove 3211 is greater than the thickness of the T-shaped column 3221, so that the delay gap 320 between the bottom rod 321 and the core sleeve 322 is realized. A sliding groove 3212 is formed in the bottom rod 321, a limiting block 3231 is arranged at the lower end of the core rod 323, and the bottom rod 321 and the core rod 323 are connected through the limiting matching of the sliding groove 3212 and the limiting block 3231.

As shown in fig. 8, the third core pulling assembly 4 of this embodiment includes a third fixed block 41 and a third core block 42, the third fixed block 41 is fixedly disposed on the first connecting block 12 and extends forward, a third inclined guide rail 411 inclined from front to back from bottom to top is disposed on the third fixed block 41, the third core block 42 is slidably disposed on the third inclined guide rail 411, the third core block 42 is slidably disposed in the movable mold plate 20, and the third core block 42 extends upward and is adapted to form the abdicating through hole 105; when the forming slide block 1 slides backwards to draw the core, the third fixing block 41 slides backwards, and the third core block 42 draws the core downwards from the abdicating through hole 105 under the guiding action of the third inclined guide rail 411.

As shown in fig. 26, the first demolding mechanism 50 of the present embodiment includes a first slider 5, a fourth fixed block 6, and a fourth core block 7, the first slider 5 is slidably disposed on the movable mold plate 20 in the front-back direction, the rear end of the first slider 5 extends to the cavity 30, a second inclined guide post 51 is slidably disposed in the first slider 5, the upper end of the second inclined guide post 51 is fixedly disposed on the fixed mold plate 10, the second inclined guide post 51 inclines forward from top to bottom, the first slider 5 extends downward to form a second connecting block 52, the fourth fixed block 6 is fixedly disposed on the second connecting block 52 and extends rearward, a fourth inclined guide rail 61 inclining from front to rear from top to bottom is disposed on the fourth inclined guide rail 61, the fourth core block 7 is slidably disposed in the movable mold plate 20, and the fourth core block 7 extends upward and is adapted to mold the first mounting hole 103; when the mold is opened, the fixed mold plate 10 is suitable for driving the first slide block 5 to slide forwards for core pulling through the second inclined guide post 51, and further driving the fourth fixed block 6 to slide forwards, and the fourth core block 7 is guided by the fourth inclined guide rail 61 to pull downwards from the first mounting hole 103.

As shown in fig. 27, the second demolding mechanism 60 of the present embodiment includes a second slider 8 and a fifth core block 9, the second slider 8 is slidably disposed on the movable mold plate 20 along the front-back direction, the movable mold plate 20 is further provided with a second linear driving device 81 for driving the second slider 8 to slide, the second slider 8 is provided with a fifth inclined rail 82 inclined from front to back from top to bottom, the fifth core block 9 is slidably disposed on the fifth inclined rail 82, the fifth core block 9 is slidably disposed in the movable mold plate 20, and the fifth core block 9 extends upward and is adapted to mold the second mounting hole 104; when the mold is opened, the second linear driving device 81 drives the second slide block 8 to slide forward, and the fifth core block 9 is pulled downwards from the second mounting hole 104 under the guiding action of the fifth inclined guide rail 82.

The core back ejector mechanism of the present embodiment is required to be inclined as a whole to a certain extent depending on the actual orientation of the cavity and the deep hole, and is not necessarily inclined in the forward directions in the six directions of the front, rear, left, right, up and down, but this does not hinder the inclined installation of the inclined guide post and the inclined guide rail. The linear driving device of the present embodiment employs an oil cylinder.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. The utility model provides a piece forming die in door, includes fixed die plate and movable mould board, the fixed die plate with the die cavity that has shaping door interior trim between the movable mould board, its characterized in that: a combined core-pulling mechanism is arranged on the rear sides of the fixed die plate and the movable die plate and comprises a forming slide block, a first core-pulling assembly, a second core-pulling assembly and a third core-pulling assembly;

2. The forming mold for the door trim according to claim 1, wherein: the first core pulling assembly comprises a first fixing block, a first core block, an advance sliding block, a first inclined guide post, a guide block, an advance core block and a guide rod, the first fixing block is fixedly arranged in the forming sliding block, the first core block is fixedly arranged at the front end of the first fixing block and is suitable for forming the mounting cavity, the advance sliding block is arranged in the forming sliding block in a sliding mode along the front-back direction, the upper section of the first inclined guide post is fixedly arranged on the fixed die plate, the lower section of the first inclined guide post is connected with the advance sliding block in a sliding mode, the first inclined guide post inclines from top to bottom, the guide block is fixedly arranged on the advance sliding block and penetrates through the first fixing block forwards, a first inclined guide rail inclining from the front to the back from the middle to two sides is arranged on the guide block, and the advance core block is arranged on the first inclined guide rail in a sliding mode, the advancing core block is arranged between the first fixing block and the first core block in a sliding mode, the guide rods respectively penetrate through the guide blocks and the advancing core block, the guide rods are perpendicular to the sliding direction of the guide blocks, and protruding blocks are arranged on the advancing core block and suitable for forming the clamping grooves;

when the mold is opened, the fixed mold plate is suitable for driving the advancing slide block and the guide block to slide backwards through the first inclined guide post, and the guide block drives the advancing core block to loose the core from the clamping groove in advance under the guiding action of the first inclined guide rail and the guide rod.

3. The forming mold for the door trim according to claim 2, wherein: the first core pulling assembly further comprises a reset elastic piece, wherein the reset elastic piece is arranged between the forming sliding block and the advancing sliding block and can force the advancing sliding block to slide forwards.

4. The forming mold for the door trim according to claim 1, wherein: the second core pulling assembly comprises a second fixed block and a second core block, the second fixed block is fixedly arranged on the first connecting block and extends forwards, a second inclined guide rail inclined from front to back from bottom to top is arranged on the second fixed block, the second core block is arranged on the second inclined guide rail in a sliding mode, the second core block is arranged in the movable template in a sliding mode, and the second core block extends upwards and is suitable for forming the mounting column and the fixing hole;

when the forming slide block slides backwards to loose the core, the second fixing block slides backwards, and the second core block looses the core downwards from the mounting column and the fixing hole under the guiding action of the second inclined guide rail.

5. The forming mold for the door trim according to claim 4, wherein: the second core block comprises a bottom rod, a core sleeve and a core rod, the bottom rod is arranged on the second inclined guide rail in a sliding mode, the core sleeve is arranged at the upper end of the bottom rod, the upper end of the core sleeve is suitable for forming the mounting column, the core rod is arranged on the bottom rod and penetrates through the core sleeve, and the upper end of the core rod is suitable for forming the fixing hole; the bottom rod is suitable for pulling the core sleeve and the core rod downwards to perform core pulling, and a delay gap is formed between the bottom rod and the core sleeve;

when the second core block is used for pulling the core rod, the bottom rod firstly pulls the core rod downwards to pull the core, meanwhile, the delay gap is gradually reduced, and when the delay gap is zero, the bottom rod pulls the core sleeve downwards to pull the core.

6. The forming mold for the door trim according to claim 5, wherein: the core bar is arranged on the bottom bar in a sliding mode, a first magnetic block is fixedly arranged at the lower end of the core bar, a second magnetic block and a third magnetic block are arranged on the second fixed block, the first magnetic block and the second magnetic block are magnetically repellent, and the first magnetic block and the third magnetic block are magnetically attracted;

when the die is closed, the first magnetic block is aligned with the second magnetic block, and the second magnetic block can force the core rod and the first magnetic block to slide upwards and abut against the forming slide block; when the second core block is used for pulling the core, the second fixing block slides backwards, so that the second magnetic block is gradually far away from the first magnetic block, the third magnetic block is gradually close to the first magnetic block, when the delay gap is zero, the third magnetic block is aligned with the first magnetic block, and the third magnetic block can force the core rod and the first magnetic block to slide downwards and abut against the second fixing block.

7. The forming mold for the door trim according to claim 6, wherein: magnetic shielding shells with openings at the upper ends are arranged between the second magnetic block and the second fixed block and between the third magnetic block and the second fixed block;

the upper end of the bottom rod is provided with a T-shaped groove, the lower end of the core sleeve is provided with a T-shaped column, the bottom rod and the core sleeve are connected through the limiting matching of the T-shaped groove and the T-shaped column, and the height of the T-shaped groove is larger than the thickness of the T-shaped column and is used for realizing the delay gap between the bottom rod and the core sleeve;

the bottom rod is internally provided with a sliding groove, the lower end of the core rod is provided with a limiting block, and the bottom rod and the core rod are connected through the limiting matching of the sliding groove and the limiting block.

8. The forming mold for the door trim according to claim 1, wherein: the third core pulling assembly comprises a third fixed block and a third core block, the third fixed block is fixedly arranged on the first connecting block and extends forwards, a third inclined guide rail inclined from front to back from bottom to top is arranged on the third fixed block, the third core block is arranged on the third inclined guide rail in a sliding mode, the third core block is arranged in the movable template in a sliding mode, and the third core block extends upwards and is suitable for forming the abdicating through hole;

when the forming slide block slides backwards to loose the core, the third fixing block slides backwards, and the third core block pulls downwards from the abdicating through hole under the guiding action of the third inclined guide rail.

9. The molding die for the door trim according to any one of claims 1 to 8, wherein: a first demoulding mechanism is arranged at the front sides of the fixed mould plate and the movable mould plate, the first demoulding mechanism comprises a first sliding block, a fourth fixed block and a fourth core block, the first sliding block is arranged on the movable mould plate in a sliding way along the front-back direction, the rear end of the first sliding block extends to the cavity, a second inclined guide post is arranged in the first sliding block in a sliding manner, the upper end of the second inclined guide post is fixedly arranged on the fixed die plate, the second inclined guide post inclines forwards from back to bottom, the first slide block extends downwards to form a second connecting block, the fourth fixed block is fixedly arranged on the second connecting block and extends backwards, a fourth inclined guide rail which is inclined from front to back from top to bottom is arranged on the fourth fixed block, the fourth core block is arranged on the fourth inclined guide rail in a sliding manner, the fourth core block is arranged in the movable template in a sliding mode, extends upwards and is suitable for forming a first mounting hole;

when the die is opened, the fixed die plate is suitable for driving the first sliding block to slide forwards for core pulling through the second inclined guide post, so as to drive the fourth fixed block to slide forwards, and the fourth core block is downwards pulled from the first mounting hole under the guiding action of the fourth inclined guide rail.

10. The forming mold for the door trim according to claim 9, wherein: the front sides of the fixed template and the movable template are also provided with a second demoulding mechanism, the second demoulding mechanism comprises a second sliding block and a fifth core block, the second sliding block is arranged on the movable template in a sliding manner along the front-back direction, the movable template is also provided with a second linear driving device for driving the second sliding block to slide, the second sliding block is provided with a fifth inclined guide rail which is inclined from front to back from top to bottom, the fifth core block is arranged on the fifth inclined guide rail in a sliding manner, the fifth core block is arranged in the movable template in a sliding manner, and the fifth core block extends upwards and is suitable for forming a second mounting hole;

when the mold is opened, the second linear driving device drives the second sliding block to slide forwards, and the fifth core block is pulled downwards from the second mounting hole under the guiding action of the fifth inclined guide rail.