CN215242630U - Large length-width ratio plastic part mould with built-in demoulding driving mechanism - Google Patents

Abstract

The utility model provides a big length-width ratio working of plastics mould with built-in drawing of patterns actuating mechanism belongs to mould technical field. The lower template is provided with a forming insert, the forming insert is combined with the upper template to form a forming cavity, the forming insert is provided with a lossless ejection block structure matched with the forming cavity, and the lower side of the lower template is provided with a bottom plate. The injection molding machine comprises a mold release driving assembly, a multi-point injection molding structure, a fixed structure and an injection molding structure, wherein the mold release driving assembly is arranged on the mold release driving assembly, the mold release driving assembly is connected with the mold release driving assembly through a connecting rod, and the mold release driving assembly is connected with the mold release driving assembly.

Description

Large length-width ratio plastic part mould with built-in demoulding driving mechanism

Technical Field

The utility model belongs to the technical field of the mould, a big length-width ratio working of plastics mould with built-in drawing of patterns actuating mechanism is related to.

Background

When a plastic part with a large length-width ratio in the prior art is subjected to injection molding, the plastic part is easily broken during ejection due to the large length-width ratio of the plastic part, and the ejected plastic part is easily warped.

In order to overcome the defects of the prior art, people continuously explore and provide various solutions, for example, a chinese patent discloses an anti-deformation secondary ejection demolding mold for a plastic table panel with a large length-width ratio [ application number: 201720534875.9], comprising a fixed die plate, a movable die plate and a die carrier, wherein the fixed die plate is provided with a cavity for molding the upper surface of the desktop, the movable die plate is provided with a core under the molding desktop, the core is square, four sides of the core are provided with four sliders for molding the sides of the desktop, the sliders can move along the vertical direction of the sides of the corresponding cores, the core is provided with a reinforcing rib molding groove in a net shape and a mounting buckle molding hole arranged at the center of the core, and a secondary ejection mechanism is arranged below the fixed die plate. The utility model has the advantages of even ejecting desktop product of thimble and top are on the strengthening rib, avoid the product to appear producing desktop warpage because of stress is unbalanced, nevertheless also have above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a big length-width ratio working of plastics mould with built-in drawing of patterns actuating mechanism is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides a big length-width ratio working of plastics mould with built-in drawing of patterns actuating mechanism, includes cope match-plate pattern and lower bolster, the lower bolster on be equipped with the shaping and insert, the shaping insert and cope match-plate pattern combination form the die cavity, the shaping insert on be equipped with the harmless ejecting block structure of die cavity looks adaptation, the lower bolster downside be equipped with the bottom plate, the bottom plate on be equipped with the drawing of patterns drive assembly who links to each other with harmless ejecting block structure, the cope match-plate pattern on still be equipped with multiple spot injection structure, the lower bolster on still be equipped with the fixed knot of inserting and construct.

In foretell big length-width ratio working of plastics mould that has built-in drawing of patterns actuating mechanism, drawing of patterns drive assembly including running through the drive groove that sets up on the lower bolster, the bottom plate on be equipped with the ejector pin fixed plate that links to each other with harmless ejecting block structure, ejector pin fixed plate lateral wall and drive groove support and lean on, the drive groove in still be equipped with the lift driving piece that can drive ejector pin fixed plate and go up and down along vertical direction.

In the plastic part mold with the built-in demolding driving mechanism and the large length-width ratio, the lifting driving part comprises two lifting drivers symmetrically arranged on two sides of the driving groove, the lifting drivers are fixed on the side wall of the driving groove and provided with output shafts capable of lifting in the vertical direction, and the end parts of the output shafts of the lifting drivers are connected with the ejector pin fixing plate.

In the plastic part mold with the large length-width ratio and the built-in demolding driving mechanism, the lossless ejection block structure comprises a plurality of ejection block groups which are arranged on the forming insert in parallel, each ejection block group comprises a plurality of ejection blocks which are uniformly arranged along the top surface of the forming insert, and the bottoms of the ejection blocks are fixedly connected with the ejector pin fixing plate through ejector rods.

In the plastic part mould with the built-in demoulding driving mechanism and the large length-width ratio, the multi-point injection structure comprises three injection molding pipes vertically arranged on the upper template, the bottom of each injection molding pipe is connected with the forming cavity, and the three injection molding pipes are respectively connected with the two sides and the middle of the forming cavity.

In the plastic part mold with the large length-width ratio and the built-in demolding driving mechanism, the insert fixing structure comprises limiting block chutes arranged on two sides of the lower template, insert limiting blocks are connected in the limiting block chutes in a sliding mode, and limiting block driving assemblies connected with the insert limiting blocks are further arranged on the lower template.

In the plastic part mold with the built-in demolding driving mechanism and the large length-width ratio, the limiting block driving assembly comprises a horizontally arranged translation driver, the translation driver is provided with an output shaft capable of reciprocating along the horizontal direction, and the end part of the output shaft of the translation driver is connected with the insert limiting block.

In the plastic part mold with the built-in demolding driving mechanism and the large length-width ratio, the outer side wall of the insert limiting block is also provided with a lower limiting step which is obliquely arranged, and the upper mold plate is provided with an upper limiting step which is matched with the lower limiting step.

In the large length-width ratio plastic part mold with the built-in demolding driving mechanism, two side limiting blocks are further arranged on two sides of the insert limiting block, the side limiting blocks are connected with the insert limiting block in a sliding mode through a sliding limiting structure, and the outer wall of each side limiting block is abutted to the upper mold plate.

In the plastic part mold with the large length-width ratio and the built-in demolding driving mechanism, the sliding limiting structure comprises a T-shaped limiting block arranged on the lower template, and a T-shaped limiting groove matched with the T-shaped limiting block is formed in the side limiting block.

Compared with the prior art, the utility model has the advantages of:

1. the injection molding machine comprises a mold release driving assembly, a multi-point injection molding structure, a fixed structure and an injection molding structure, wherein the mold release driving assembly is arranged on the mold release driving assembly, the mold release driving assembly is connected with the mold release driving assembly through a connecting rod, and the mold release driving assembly is connected with the mold release driving assembly.

2. The lifting driving piece is arranged in the driving groove, the thimble fixing plate can be driven to lift along the vertical direction through the lifting driving piece without an external driving mechanism, the thimble fixing plate can be ejected without damage through the lossless ejection block structure when moving upwards, and the qualification rate of the product is improved.

3. The ejection blocks in the ejection block groups are uniformly arranged along the length direction of the injection molding piece, so that the damage to the product during ejection due to the overlarge length-width ratio of the product can be prevented.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic diagram of an external structure provided by the present invention;

FIG. 2 is a schematic cross-sectional view at a lossless ejector block structure;

FIG. 3 is a schematic cross-sectional view at a multi-shot injection molding configuration;

FIG. 4 is a schematic structural view of the lower template;

fig. 5 is a schematic structural view of the knock-out driving assembly.

In the figure: the injection molding device comprises an upper template 1, a lower template 2, a molding insert 3, a molding cavity 4, a lossless ejection block structure 5, a bottom plate 6, a demolding driving assembly 7, a multi-point injection molding structure 8, an insert fixing structure 9, a driving groove 10, an ejector pin fixing plate 11, a lifting driving piece 12, a lifting driver 13, an ejection block group 14, an ejection block 15, an ejector rod 16, an injection molding pipe 17, a limit block sliding groove 18, an insert limit block 20, a limit block driving assembly 21, a translation driver 22, a lower limit step 23, an upper limit step 24, a side limit block 25, a sliding limit structure 26 and a T-shaped limit block 27.

Detailed Description

As shown in fig. 1-5, a large length-width ratio plastic part mold with a built-in demolding driving mechanism comprises an upper mold plate 1 and a lower mold plate 2, wherein a molding insert 3 is arranged on the lower mold plate 2, the molding insert 3 and the upper mold plate 1 are combined to form a molding cavity 4, an undamaged ejection block structure 5 matched with the molding cavity 4 is arranged on the molding insert 3, a bottom plate 6 is arranged on the lower side of the lower mold plate 2, a demolding driving component 7 connected with the undamaged ejection block structure 5 is arranged on the bottom plate 6, a multi-point injection molding structure 8 is further arranged on the upper mold plate 1, and an insert fixing structure 9 is further arranged on the lower mold plate 2.

In this embodiment, harmless ejecting structure can prevent when big length-width ratio injection molding that the injection molding is moulded plastics that the injection molding is impaired, drawing of patterns drive assembly 7 can drive harmless ejecting structure upward movement ejecting with the product, multiple spot injection structure 8 can be through the multiple spot liquid of moulding plastics of injecting into in the shaping intracavity, can effectively improve injection efficiency, fixed knot structure 9 of inserting can insert the shaping when moulding plastics and carry out spacingly, the too big skew that leads to inserting of pressure when preventing to mould plastics, make injection moulding's product quality go wrong.

Specifically, as shown in fig. 2 to 5, the demolding driving assembly 7 includes a driving groove 10 penetrating through the lower mold plate 2, the bottom plate 6 is provided with a thimble fixing plate 11 connected to the lossless ejecting block structure 5, a side wall of the thimble fixing plate 11 abuts against the driving groove 10, and the driving groove 10 is further provided with a lifting driving member 12 capable of driving the thimble fixing plate 11 to lift in the vertical direction.

The lifting driving piece 12 is arranged in the driving groove 10, the thimble fixing plate 11 can be driven to lift along the vertical direction through the lifting driving piece 12 without an external driving mechanism, the thimble fixing plate 11 can be ejected without damage through the lossless ejection block structure 5 when moving upwards, and the qualification rate of the product is improved.

Specifically, as shown in fig. 2 to 4, the lifting driving member 12 includes two lifting drivers 13 symmetrically disposed on two sides of the driving slot 10, the lifting drivers 13 are fixed on the side walls of the driving slot 10, the lifting drivers 13 have output shafts capable of lifting in the vertical direction, and the end portions of the output shafts of the lifting drivers 13 are connected to the thimble fixing plates 11. The lifting driver 13 can drive the thimble fixing plate 11 to lift along the vertical direction, the thimble fixing plate 11 can move upwards to eject the product in a lossless manner through the lossless ejection block structure 5, and the qualification rate of the product is improved.

It will be appreciated by those skilled in the art that the lift drive may be a cylinder, linear motor, or the like.

Specifically, as shown in fig. 2, 4 and 5, the lossless ejection block structure 5 includes a plurality of ejection block groups 14 arranged in parallel on the forming insert 3, each ejection block group 14 includes a plurality of ejection blocks 15 uniformly arranged along the top surface of the forming insert 3, and the bottoms of the ejection blocks 15 are fixedly connected to the ejector pin fixing plate 11 through ejector pins 16. The ejection blocks in the ejection block groups are uniformly arranged along the length direction of the injection molding piece, so that the damage to the product during ejection due to the overlarge length-width ratio of the product can be prevented.

Specifically, as shown in fig. 1 to 3, the multi-point injection structure 8 includes three injection pipes 17 vertically disposed on the upper mold plate 1, the bottom of the injection pipe 17 is connected to the molding cavity 4, and the three injection pipes 17 are respectively connected to two sides and a middle portion of the molding cavity 4, so that injection liquid can be injected from three points at the same time, the injection efficiency can be effectively improved, and the injection liquid can be prevented from flowing to two sides for too long time due to an excessively large length-width ratio.

Specifically, as shown in fig. 3 to fig. 5, the insert fixing structure 9 includes stopper chutes 18 disposed at two sides of the lower template 2, the stopper chutes 18 are slidably connected with insert stoppers 20, and the lower template 2 is further provided with a stopper driving assembly 21 connected with the insert stoppers 20. The stopper driving assembly 21 comprises a horizontally arranged translation driver 22, the translation driver 22 is provided with an output shaft capable of reciprocating along the horizontal direction, and the end part of the output shaft of the translation driver 22 is connected with the insert stopper 20. The translation driver 22 can drive the insert limiting block 20 to move towards the direction of the forming insert, so that the forming insert can be fixed, and the problem that the insert is deviated due to overlarge pressure during injection molding and the quality of an injection molded product is poor is prevented.

It will be appreciated by those skilled in the art that the translation actuator 22 may be a cylinder, linear motor, or the like.

Preferably, as shown in fig. 2 and fig. 3, the outer side wall of the insert limiting block 20 is further provided with a lower limiting step 23 which is arranged obliquely, and the upper die plate 1 is provided with an upper limiting step 24 which is matched with the lower limiting step 23. The upper limiting step 24 on the upper template 1 can abut against the lower limiting step after the upper template and the lower template are assembled, so that the insert limiting block can be further limited, and the pressure of a translation driver is reduced.

Preferably, as shown in fig. 3 to 5, two side limiting blocks 25 are further provided at two sides of the insert limiting block 20, the side limiting blocks 25 are slidably connected with the insert limiting block 20 through a sliding limiting structure 26, and an outer wall of the side limiting block 25 abuts against the upper die plate 1. The inner end of the side limiting block 25 is abutted against the side of the forming insert so as to limit the forming insert from the side surface of the forming insert, and the sliding limiting structure 26 can facilitate the separation of the side limiting block and the forming insert and can prevent the side limiting block from loosening.

Specifically, as shown in fig. 4 and 5, the sliding limiting structure 26 includes a T-shaped limiting block 27 disposed on the lower mold plate 2, and the side limiting block 25 is provided with a T-shaped limiting groove adapted to the T-shaped limiting block 27. The side limiting block 25 can slide outwards along the T-shaped limiting block to be separated from the forming insert, and the T-shaped limiting groove and the T-shaped limiting block 27 are matched to limit the side limiting block.

The utility model discloses a theory of operation is: the nondestructive ejection structure can prevent an injection molding piece from being damaged when the injection molding piece with a large length-width ratio is injected, the demolding driving assembly 7 can drive the nondestructive ejection structure to move upwards to eject a product, the multipoint injection structure 8 can inject injection liquid into a molding cavity through multiple points, the injection efficiency can be effectively improved, the insert fixing structure 9 can limit a molded insert during injection, and the insert is prevented from deviating due to overlarge pressure during injection, so that the quality of the injection molded product is not good;

the lifting driving piece 12 is arranged in the driving groove 10, the thimble fixing plate 11 can be driven to lift along the vertical direction by the lifting driving piece 12 without an external driving mechanism, the thimble fixing plate 11 can be ejected without damage by the upward movement of the thimble fixing plate 11 through the lossless ejection block structure 5, the qualification rate of the product is improved, the lifting driver 13 can drive the thimble fixing plate 11 to lift along the vertical direction, the thimble fixing plate 11 can be ejected without damage by the upward movement of the thimble fixing plate 11 through the lossless ejection block structure 5, the qualification rate of the product is improved, the ejection blocks in a plurality of ejection block groups are uniformly arranged along the length direction of the injection molding piece, therefore, the product damage caused by the overlarge length-width ratio of the product during ejection can be prevented, the three injection molding pipes 17 are respectively connected with the two sides and the middle part of the molding cavity 4, injection molding liquid can be injected from three points at the same time, the injection molding efficiency can be effectively improved, and the phenomenon that the injection molding liquid flows to the two sides for too long time due to the overlarge length-width ratio is prevented;

the translation driver 22 can drive the insert limiting block 20 to move towards the molding insert direction so as to fix the molding insert, the excessive pressure during injection molding is prevented from causing the insert to deviate, the product quality of injection molding is enabled to be problematic, the upper limiting step 24 on the upper template 1 can be abutted against the lower limiting step after the upper template and the lower template are assembled, the insert limiting block can be further limited, the pressure of the translation driver is reduced, the inner end of the side limiting block 25 is abutted against the side portion of the molding insert, so that the molding insert can be limited from the side portion of the molding insert, the sliding limiting structure 26 can facilitate the separation of the side limiting block and the molding insert and can prevent the side limiting block from loosening, the side limiting block 25 can slide outwards along the T-shaped limiting block and can be separated from the molding insert, and the T-shaped limiting groove and the T-shaped limiting block 27 can be matched to limit the side limiting block.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the upper mold plate 1, the lower mold plate 2, the molding insert 3, the molding cavity 4, the lossless ejector block structure 5, the bottom plate 6, the demolding driving assembly 7, the multi-point injection structure 8, the insert fixing structure 9, the driving groove 10, the ejector fixing plate 11, the lifting driving member 12, the lifting driver 13, the ejector block group 14, the ejector block 15, the ejector rod 16, the injection molding pipe 17, the stopper sliding groove 18, the insert stopper 20, the stopper driving assembly 21, the translation driver 22, the lower stopper step 23, the upper stopper step 24, the side stopper 25, the sliding stopper structure 26, the T-shaped stopper 27, etc., are used more herein, these terms are merely used for more convenient description and explanation of the essence of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (10)

1. The utility model provides a big length-width ratio working of plastics mould with built-in drawing of patterns actuating mechanism, includes cope match-plate pattern (1) and lower bolster (2), its characterized in that, lower bolster (2) on be equipped with the shaping and insert (3), the shaping insert (3) and cope match-plate pattern (1) combination form one-tenth die cavity (4), the shaping insert (3) on be equipped with the harmless ejecting block structure (5) of one-tenth die cavity (4) looks adaptation, lower bolster (2) downside be equipped with bottom plate (6), bottom plate (6) on be equipped with drawing of patterns drive assembly (7) that link to each other with harmless ejecting block structure (5), cope match-plate pattern (1) on still be equipped with multiple spot injection structure (8), lower bolster (2) on still be equipped with and insert fixed knot structure (9).

2. The plastic part mold with large length-width ratio and built-in demolding driving mechanism as claimed in claim 1, wherein the demolding driving assembly (7) comprises a driving groove (10) penetrating through the lower mold plate (2), the bottom plate (6) is provided with a thimble fixing plate (11) connected with the lossless ejector block structure (5), the side wall of the thimble fixing plate (11) abuts against the driving groove (10), and a lifting driving member (12) capable of driving the thimble fixing plate (11) to lift in the vertical direction is further arranged in the driving groove (10).

3. A mold for plastic articles with large aspect ratio and built-in demolding driving mechanism as claimed in claim 2, wherein said lifting driving member (12) comprises two lifting drivers (13) symmetrically disposed at both sides of the driving groove (10), said lifting drivers (13) are fixed on the side wall of the driving groove (10), said lifting drivers (13) have output shafts which can be lifted and lowered along the vertical direction, the end of the output shaft of the lifting driver (13) is connected to the thimble fixing plate (11).

4. The plastic part mold with a built-in demolding driving mechanism according to claim 2, wherein the lossless ejection block structure (5) comprises a plurality of ejection block groups (14) arranged on the forming insert (3) in parallel, each ejection block group (14) comprises a plurality of ejection blocks (15) uniformly arranged along the top surface of the forming insert (3), and the bottoms of the ejection blocks (15) are fixedly connected with the ejector pin fixing plate (11) through ejector pins (16).

5. A mould for plastic articles with high aspect ratio and built-in demoulding drive according to claim 1, wherein the multi-point injection structure (8) comprises three injection tubes (17) vertically arranged on the upper mould plate (1), the bottom of the injection tubes (17) is connected to the forming cavity (4), and the three injection tubes (17) are respectively connected to the two sides and the middle of the forming cavity (4).

6. The plastic part mold with the built-in demolding driving mechanism and the large length-width ratio as claimed in claim 1, wherein the insert fixing structure (9) comprises a limiting block sliding groove (18) arranged at two sides of the lower mold plate (2), an insert limiting block (20) is connected in the limiting block sliding groove (18) in a sliding manner, and a limiting block driving assembly (21) connected with the insert limiting block (20) is further arranged on the lower mold plate (2).

7. A plastic part mold with a built-in demolding driving mechanism according to claim 6, wherein the stopper driving assembly (21) comprises a horizontally arranged translation driver (22), the translation driver (22) is provided with an output shaft capable of reciprocating in the horizontal direction, and the end part of the output shaft of the translation driver (22) is connected with the insert stopper (20).

8. The plastic part mold with the built-in demolding driving mechanism and the large length-width ratio as claimed in claim 7, wherein the outer side wall of the insert limiting block (20) is further provided with a lower limiting step (23) which is obliquely arranged, and the upper mold plate (1) is provided with an upper limiting step (24) which is matched with the lower limiting step (23).

9. The plastic part mold with the built-in demolding driving mechanism and the large length-width ratio as claimed in claim 8, wherein two side limiting blocks (25) are further arranged on two sides of the insert limiting block (20), the side limiting blocks (25) are connected with the insert limiting block (20) in a sliding mode through sliding limiting structures (26), and the outer walls of the side limiting blocks (25) abut against the upper mold plate (1).

10. The plastic part mold with built-in demolding driving mechanism according to claim 9, wherein the sliding limiting structure (26) comprises a T-shaped limiting block (27) arranged on the lower mold plate (2), and the side limiting block (25) is provided with a T-shaped limiting groove matched with the T-shaped limiting block (27).

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