CN219883170U

CN219883170U - Backrest panel mold

Info

Publication number: CN219883170U
Application number: CN202321240557.3U
Authority: CN
Inventors: 李波
Original assignee: Zhejiang Xinyang New Energy Technology Co ltd
Current assignee: Zhejiang Xinyang New Energy Technology Co ltd
Priority date: 2023-05-19
Filing date: 2023-05-19
Publication date: 2023-10-24
Anticipated expiration: 2033-05-19

Abstract

The utility model provides a back panel die which comprises a top plate, a female die, a male die, a die foot and a bottom plate, wherein the top plate, the female die, the male die, the die foot and the bottom plate are sequentially arranged from top to bottom; the back panel mold is used for avoiding the damage to the mounting groove on the back-off body on the inner surface of the product when the product is demolded through the cooperation of the inclined top assembly and the core pulling assembly.

Description

Backrest panel mold

Technical Field

The present utility model relates to injection molds, and in particular, to a back panel mold.

Background

During injection molding, the inner surface of the molded product is provided with concave-convex shapes or side holes (namely back-off), and the solidified plastic product cannot be normally demolded due to interference of a cavity during mold opening, and a lateral parting or core pulling mechanism is needed at the moment. The inclined roof is used as a most common form of a lateral parting or core pulling mechanism and is often used for core pulling occasions on the inner surface of a product.

As shown in fig. 1, the battery car backrest panel product illustration comprises a panel body 16, four back-off bodies 17 for installation and matching are arranged on the inner surface of the panel body 16, auxiliary installation grooves 18 are formed in the bottoms of the back-off bodies 17, main installation grooves 19 are formed in the tops of the back-off bodies 17, an included angle a smaller than 45 degrees exists between the central axis of each auxiliary installation groove 18 and the central axis of each back-off body 17, and the central axis of each main installation groove 19 is perpendicular to the central axis of each back-off body 17. Because the angles between the main mounting groove 19 and the auxiliary mounting groove 18 and the back-off body 17 are inconsistent, the common oblique ejection core pulling mechanism in the production process can not finish the demolding of the main mounting groove 19 and the auxiliary mounting groove 18, and the back-off body 17 on the inner surface of a product can be damaged by the oblique ejection during the demolding.

Disclosure of Invention

In view of the above, the present utility model is to provide a back panel mold, which has two mounting grooves with different angles to the back-off body for the back-off body of the product, so as to avoid the damage to the back-off body on the inner surface of the product when the product is demolded.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the back panel mold comprises a top plate, a female mold, a male mold, mold legs and a bottom plate which are sequentially arranged from top to bottom, wherein the female mold and the male mold are matched to form a cavity, an injection molding channel is arranged on the top plate, the injection molding channel is communicated with the cavity, and the back panel mold further comprises an oblique ejection core pulling mechanism, and the oblique ejection core pulling mechanism comprises an oblique ejection assembly and a core pulling assembly;

the oblique ejection assembly comprises an upper ejection plate, a lower ejection plate, an oblique guide pillar, an ejector block and a guide unit, wherein the lower ejection plate is arranged at the top of the bottom plate, the upper ejection plate is arranged at the top of the lower ejection plate, the guide unit is fixed in the upper ejection plate, a first cavity is formed in the ejector block, the ejector block is inlaid at the top of the male die, the outer wall of the ejector block is used as a part of the inner surface of the cavity, one end of the oblique guide pillar is connected with the guide unit in a sliding manner, and the other end of the oblique guide pillar extends into the ejector block;

the core pulling assembly comprises a core bar and a sliding block, wherein the sliding block is arranged in the first cavity in a sliding mode, the inclined guide pillar is fixedly connected with the sliding block, the core bar obliquely extends downwards, one end of the core bar is in sliding connection with one end, close to the cavity, of the sliding block, and the other end of the core bar extends into the cavity.

According to the technical scheme, the injection molding machine drives the bottom plate, the mold legs and the male mold to be far away from the top plate and the female mold during mold opening, then the ejector rod of the injection molding machine pushes the lower ejector plate and the upper ejector plate to be close to the male mold, the upper ejector plate moves and drives the guide unit to move, then the guide unit pushes the inclined guide post to move towards the center of the cavity, the inclined guide post moves and drives the sliding block to move towards the center of the cavity and the axial direction of the inclined guide post simultaneously, and along with the inclined movement of the sliding block, the sliding block drives the end part of the core rod to gradually withdraw from the cavity until the core rod completely enters the inside of the ejector block, and core pulling action of the auxiliary mounting groove on the product inverted buckle body is completed; along with the continuous movement of the sliding block, the sliding block pushes the top block to move along the axial direction of the inclined guide post and gradually approach the central axis of the cavity, and the movement of the top block enables the injection molded product in the cavity to gradually get away from the surface of the male die, and core pulling of the main product mounting groove is completed; through the cooperation of oblique guide pillar and sliding block, the cooperation between sliding block and kicking block, the core pulling action of main mounting groove and vice mounting groove is accomplished to two steps, guarantees that the back-off body of internal surface can not be destroyed when the demolding of die sinking product.

Preferably, the bottom surface of the male die is provided with a plurality of positioning grooves, and the bottom wall of each positioning groove is perpendicular to the inclined guide post.

Through the technical scheme, the male die only needs to control the angle of the bottom wall of the positioning groove when opening the position hole of the inclined guide post, so that the position hole of the inclined guide post is more accurate, and the processing cost is lower.

Preferably, the guide unit comprises a connecting block, a sliding plate and a rotating block, wherein the end part of the connecting block is penetrated and provided with a sliding groove, the sliding plate is symmetrically arranged in the sliding groove, the side wall of the sliding plate is tightly attached to the side wall of the sliding groove, a rotating shaft is arranged on the protrusion of the side wall of the rotating block, a shaft hole is arranged on the side wall of the sliding plate, the rotating shaft is rotationally connected with the shaft hole, and the inclined guide pillar is fixedly connected with the rotating block.

Through the technical scheme, when the upper ejector plate moves, the inclined guide column applies a transverse force to the rotating block, and the rotating block transmits the force to the sliding block through the cooperation of the rotating shaft and the shaft hole, so that the sliding block transversely moves in the sliding groove until die opening is finished.

Preferably, an i-shaped groove is formed in one end, close to the cavity, of the sliding block, and an i-shaped key matched with the i-shaped groove is arranged at the end, close to the sliding block, of the core rod.

Through the technical scheme, the I-shaped groove and the I-shaped key are matched, so that the sliding block and the core bar are simpler to install, and the connection is reliable.

Preferably, the side wall of the sliding block is provided with a guide rail, two ends of the guide rail extend to the top wall and the bottom wall of the sliding block, the central axis of the guide rail is parallel to the central axis of the inclined guide post, the side wall of the first cavity is provided with a guide groove matched with the guide rail, and the guide rail is slidably arranged in the guide groove.

Through the technical scheme, when the sliding block slides, the guide rail slides in the guide groove to play a sliding guiding role of the sliding block, so that the sliding of the sliding block is more stable.

Preferably, a spring is arranged in the guide groove, the central axis of the spring coincides with the central axis of the guide groove, one end of the spring is fixed at the top end of the guide rail, and the other end of the spring is fixed at the end part of the guide groove.

Through the technical scheme, when the guide rail slides in the guide groove, the spring is compressed, and the spring prevents the top surface of the sliding block from being in hard contact with the top wall of the cavity when the sliding block slides to push the top block, so that the service life of the sliding block is prolonged.

Preferably, the bottom wall of the sliding block is fixedly connected with an anti-collision rubber cushion.

Through above-mentioned technical scheme, the bottom surface of sliding block and the diapire hard contact of cavity one have been avoided to crashproof cushion, further guarantee the life of sliding block.

Drawings

FIG. 1 is a schematic structural view of a product;

FIG. 2 is a schematic diagram of an embodiment;

FIG. 3 is a partial cross-sectional view of an embodiment;

fig. 4 is an enlarged view of a portion a of fig. 3;

fig. 5 is a schematic structural view of the guide unit;

fig. 6 is a schematic structural view of the core pulling assembly.

Reference numerals: 1. a top plate; 2. a master mold; 3. a male mold; 4. a mold foot; 5. a bottom plate; 6. a cavity; 7. an injection molding channel; 8. the oblique ejection core pulling mechanism; 81. an inclined roof assembly; 811. an upper ejector plate; 812. a lower ejector plate; 813. oblique guide posts; 814. a top block; 815. a guide unit; 8151. a connecting block; 8152. a slide plate; 8153. a rotating block; 82. a core pulling assembly; 821. a core bar; 8211. a spool key; 822. a sliding block; 8221. a guide rail; 8222. an I-shaped groove; 9. a chute; 10. a rotating shaft; 11. a shaft hole; 12. a positioning groove; 13. a spring; 14. an anti-collision rubber cushion; 15. a first cavity; 151. a guide groove; 16. a panel body; 17. a back-off body; 18. a sub-mounting groove; 19. a main mounting groove.

Detailed Description

The following detailed description of the utility model is provided in connection with the accompanying drawings to facilitate understanding and grasping of the technical scheme of the utility model.

The back panel mold comprises a top plate 1, a female mold 2, a male mold 3, mold legs 4 and a bottom plate 5 which are sequentially arranged from top to bottom as shown in fig. 2. The female die 2 and the male die 3 are matched to form a cavity 6, an injection molding channel 7 is arranged on the top plate 1, and the injection molding channel 7 is communicated with the cavity 6. The device also comprises an inclined top core-pulling mechanism 8, wherein the inclined top core-pulling mechanism 8 comprises an inclined top component 81 and a core-pulling component 82.

As shown in fig. 2 to 4, the tilt head assembly 81 includes an upper ejector plate 811, a lower ejector plate 812, a tilt guide post 813, a head block 814, and a guide unit 815. A lower ejector plate 812 is installed on top of the bottom plate 5, an upper ejector plate 811 is installed on top of the lower ejector plate 812, and a guide unit 815 is fixed in the upper ejector plate 811. The top block 814 has a cavity 15 therein, the top block 814 is embedded in the top of the male mold 3, and the outer wall of the top block 814 is used as a part of the inner surface of the cavity 6. One end of the inclined guide post 813 is slidably connected with the guide unit 815, and the other end of the inclined guide post 813 extends into the top block 814.

As shown in fig. 5, the guiding unit 815 includes a connecting block 8151, a sliding plate 8152, and a rotating block 8153, the end portion of the connecting block 8151 is provided with a sliding groove 9 in a penetrating manner, the sliding plate 8152 is symmetrically disposed in the sliding groove 9, the side wall of the sliding plate 8152 is tightly attached to the side wall of the sliding groove 9, a rotating shaft 10 is convexly disposed on the side wall of the rotating block 8153, a shaft hole 11 is disposed on the side wall of the sliding plate 8152, the rotating shaft 10 is rotatably connected with the shaft hole 11, and the inclined guide post 813 is fixedly connected with the rotating block 8153.

As shown in fig. 4 and 6, the core-pulling assembly 82 includes a core rod 821 and a sliding block 822, the core rod 821 extends obliquely downward, one end of the core rod 821 is slidingly connected with one end of the sliding block 822, which is close to the cavity 6, and the other end of the core rod 821 extends into the cavity 6.

As shown in fig. 3 and 4, the bottom wall of the sliding block 822 is fixedly connected with an anti-collision rubber pad 14, the sliding block 822 is slidably arranged in the first cavity 15, and the inclined guide pillar 813 is fixedly connected with the sliding block 822. An i-shaped groove 8222 is formed in one end, close to the cavity 6, of the sliding block 822, and an i-shaped key 8211 matched with the i-shaped groove 8222 is arranged at the end, close to the sliding block 822, of the core rod 821. The side wall of the sliding block 822 is provided with a guide rail 8221, two ends of the guide rail 8221 extend to the top wall and the bottom wall of the sliding block 822, the central axis of the guide rail 8221 is parallel to the central axis of the inclined guide post 813, the side wall of the first cavity 15 is provided with a guide groove 151 matched with the guide rail 8221, and the guide rail 8221 is slidably arranged in the guide groove 151. The guide groove 151 is provided with a spring 13, the central axis of the spring 13 coincides with the central axis of the guide groove 151, one end of the spring 13 is fixed to the top end of the guide rail 8221, and the other end of the spring 13 is fixed to the end of the guide groove 151. The connection reliability is guaranteed through the matching of the I-shaped groove 8222 and the I-shaped key 8211, the arrangement of the spring 13 prevents the top surface of the sliding block 822 from being in hard contact with the top wall of the first cavity 15 when the sliding block 822 slides to push the top block 814, the service life of the sliding block 822 is prolonged, the bottom surface of the sliding block 822 is prevented from being in hard contact with the bottom wall of the first cavity 15 by the anti-collision rubber pad 14, and the service life of the sliding block 822 is further guaranteed.

As shown in fig. 3, in order to make the position hole of the oblique guide post 813 more accurate, a plurality of positioning slots 12 are formed on the bottom surface of the male mold 3, and the bottom wall of the positioning slot 12 is perpendicular to the oblique guide post 813.

Specific embodiments of a back panel mold: when the mold is opened, the injection molding machine drives the bottom plate 5, the mold legs 4 and the male mold 3 to be far away from the top plate 1 and the female mold 2, and then the ejector rods of the injection molding machine push the lower ejector plate 812 and the upper ejector plate 811 to be close to the male mold 3. The upper ejector plate 811 moves while driving the guide unit 815 to move, then the guide unit 815 pushes the inclined guide post 813 to move toward the center of the cavity 6, and simultaneously the inclined guide post 813 applies a transverse force to the rotating block 8153, and the rotating block 8153 transfers the force to the sliding block 822 through the cooperation of the rotating shaft 10 and the shaft hole 11, so that the sliding block 822 moves transversely in the sliding groove 9. When the oblique guide post 813 moves, the sliding block 822 is driven to move towards the center of the cavity 6 and the axis direction of the oblique guide post 813 simultaneously, so that the guide rail 8221 slides in the guide groove 151, thereby compressing the spring 13 and deforming the spring 13. Along with the oblique movement of the sliding block 822, the sliding block 822 drives the end part of the core rod 821 to gradually withdraw from the cavity 6 until the core rod 821 completely enters the top block 814, and at this time, the core pulling action of the auxiliary mounting groove 18 on the product back-off body 17 is completed.

Along with the continuous movement of the sliding block 822, the spring 13 is compressed to the greatest extent, at this time, the sliding block 822 pushes the top block 814 to move along the axial direction of the inclined guide post 813 and gradually approach the central axis of the cavity 6, and the movement of the top block 814 makes the injection molded product in the cavity 6 gradually move away from the surface of the male mold 3, and meanwhile core pulling of the main product mounting groove 19 is completed.

Of course, the above is only a typical example of the utility model, and other embodiments of the utility model are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the utility model claimed.

Claims

1. The utility model provides a back panel mould, includes roof (1), master model (2), public mould (3), mould foot (4), bottom plate (5) that from the top down set gradually, master model (2), public mould (3) cooperation form die cavity (6), be equipped with on roof (1) and mould plastics passageway (7), the passageway of moulding plastics (7) intercommunication die cavity (6), characterized by: the device also comprises an inclined top core-pulling mechanism (8), wherein the inclined top core-pulling mechanism (8) comprises an inclined top component (81) and a core-pulling component (82);

the oblique ejection assembly (81) comprises an upper ejection plate (811), a lower ejection plate (812), an oblique guide pillar (813), an ejection block (814) and a guide unit (815), wherein the lower ejection plate (812) is installed at the top of the bottom plate (5), the upper ejection plate (811) is installed at the top of the lower ejection plate (812), the guide unit (815) is fixed in the upper ejection plate (811), a cavity I (15) is formed in the ejection block (814), the ejection block (814) is inlaid at the top of the male die (3), the outer wall of the ejection block (814) serves as a part of the inner surface of the cavity (6), one end of the oblique guide pillar (813) is connected with the guide unit (815) in a sliding mode, and the other end of the oblique guide pillar (813) extends into the ejection block (814);

core pulling assembly (82) includes core bar (821), sliding block (822) is slided and is located in cavity one (15), oblique guide pillar (813) fixed connection sliding block (822), core bar (821) slope downwardly extending, one end of core bar (821) with sliding block (822) is close to one end of die cavity (6) is slided and is connected, the other end of core bar (821) extends to in die cavity (6).

2. A back panel mold according to claim 1, wherein: a plurality of positioning grooves (12) are formed in the bottom surface of the male die (3), and the bottom wall of each positioning groove (12) is perpendicular to the inclined guide pillar (813).

3. A back panel mold according to claim 1, wherein: the guide unit (815) comprises a connecting block (8151), a sliding plate (8152) and a rotating block (8153), wherein a sliding groove (9) is formed in the end portion of the connecting block (8151) in a penetrating mode, the sliding plate (8152) is symmetrically arranged in the sliding groove (9), the side wall of the sliding plate (8152) is tightly attached to the side wall of the sliding groove (9), a rotating shaft (10) is arranged on the protrusion of the side wall of the rotating block (8153), a shaft hole (11) is formed in the side wall of the sliding plate (8152), the rotating shaft (10) is connected with the shaft hole (11) in a rotating mode, and the inclined guide pillar (813) is fixedly connected with the rotating block (8153).

4. A back panel mold according to claim 1, wherein: an I-shaped groove (8222) is formed in one end, close to the cavity (6), of the sliding block (822), and an I-shaped key (8211) matched with the I-shaped groove (8222) is arranged at the end, close to the sliding block (822), of the core rod (821).

5. A back panel mold according to claim 1, wherein: the side wall of sliding block (822) is equipped with guide rail (8221), the both ends of guide rail (8221) extend to the roof and the diapire of sliding block (822), just the central axis of guide rail (8221) with the central axis of oblique guide pillar (813) is parallel, the side wall of cavity one (15) be equipped with guide slot (151) of guide rail (8221) looks adaptation, guide rail (8221) slip is located in guide slot (151).

6. A back panel mold according to claim 5, wherein: the novel guide rail is characterized in that a spring (13) is arranged in the guide groove (151), the central axis of the spring (13) coincides with the central axis of the guide groove (151), one end of the spring (13) is fixed to the top end of the guide rail (8221), and the other end of the spring (13) is fixed to the end portion of the guide groove (151).

7. A back panel mold according to claim 5, wherein: the bottom wall of the sliding block (822) is fixedly connected with an anti-collision rubber pad (14).