CN219114635U - Die support piece and laminated injection die assembly with same - Google Patents

Abstract

The utility model relates to the technical field of injection mold equipment, and particularly discloses a mold support piece and a laminated injection mold assembly with the same, wherein the laminated injection mold assembly comprises a plurality of movable templates which are arranged in an overlapped mode, tie bars horizontally arranged on two sides of the movable templates and the mold support piece; the die supporting piece comprises a supporting part and a sliding block, one end of the supporting part is movably connected with the sliding block, and the sliding block has displacement allowance relative to the supporting part in the length direction of the sliding block. The sliding block can move in a small range by utilizing the displacement allowance, and the relative position of the sliding block and the tie bar is corrected, so that the sliding block can be attached to the peripheral surface of the tie bar, and the sliding effect is improved; meanwhile, the integral supporting part bears the weight of the movable template, so that the deformation of the guide post of the movable template due to overlarge stress is avoided, and the service life of the die is prolonged.

Description

Die support piece and laminated injection die assembly with same

Technical Field

The utility model relates to the technical field of injection mold equipment, in particular to a mold support piece and a laminated injection mold assembly with the same.

Background

With the development of technology, the common two-format injection mold cannot meet the requirements of high-precision and mass production, so that new molds such as a laminated mold, a turnover mold and the like are vigorously developed. The laminated injection mold is a leading edge technology for the development of the current plastic mold, and the cavities of the laminated injection mold are distributed on two or more layers and are arranged in an overlapping manner, which is equivalent to stacking and combining a plurality of molds together. The laminated injection mold can greatly improve the production efficiency and the equipment utilization rate.

The injection mold mainly comprises a movable mold plate (called a movable mold for short) and a fixed mold plate (called a fixed mold for short), wherein the fixed mold plate is arranged on the fixed mold plate of the injection molding machine, the movable mold is arranged on the movable mold plate of the injection molding machine, the movable mold and the fixed mold are closed to form a pouring system and a cavity during injection molding, and the movable mold and the fixed mold are separated during mold opening so as to take out plastic products. In order to ensure accurate alignment of the movable mold and the fixed mold during mold closing, a guide member must be provided in the mold, and typically four sets of guide posts and guide sleeves are used to form the guide member. Because the die is provided with other structures such as a cavity and the like, the diameter of the guide post cannot be designed to be too large. The stacked injection mold is often overweight due to the increased number of movable templates, so that the mold guide post is subjected to excessive pressure to be easily deformed, and the mold is blocked or has other faults. The conventional technical means is to provide a supporting member between the movable mold plate and the tie bar on the injection molding machine to disperse the weight of the movable mold plate. Most supporting pieces in the prior art are complex in structure, are inconvenient to install or detach, and accurately align the outer peripheral surface of the tie bar in the installation process, keep close fit, and have high requirements on installation accuracy. When the contact part (such as the sliding block) of the supporting piece and the tie bar is not tightly attached to the peripheral surface of the tie bar, the service lives of the supporting piece and the tie bar can be greatly influenced.

Disclosure of Invention

The utility model aims to solve the problem that the existing support piece is high in installation accuracy, and provides a mold support piece and a laminated injection mold assembly with the same. The utility model adopts the sliding block movably connected with the supporting part, has simple structure, can play a role in supporting the movable template during mold opening and mold closing, and can well improve the service lives of the sliding block and the tie bar.

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

the utility model provides a die supporting piece which comprises a supporting part and a sliding block, wherein one end of the supporting part is movably connected with the sliding block, and the sliding block is provided with a first displacement allowance relative to the supporting part in the length direction of the sliding block.

The working flow of the utility model is as follows: the supporting part is fixedly connected with the die, the sliding block is in sliding connection with other components (usually a tie bar) arranged along the moving direction of the die, and the die supporting piece disclosed by the utility model can disperse the weight of the die onto the tie bar, so that the tie bar bears part of the weight of the die, and bending caused by overlarge weight borne by a guide post penetrating through the die is avoided, and finally the die is blocked. The sliding block is movably connected with the supporting part, and after the sliding block is connected with the supporting part, the sliding block has a certain displacement allowance I in the length direction of the sliding block, and the sliding block can move in a small range by utilizing the displacement allowance I so as to correct the relative position of the sliding block and the tie bar, so that the sliding block can be attached to the peripheral surface of the tie bar, and the sliding effect is improved.

As one preferable scheme, the supporting part is of an integrated structure, so that the structure is simple and practical, the rigidity strength of the structure can be ensured, and the damage rate of the structure can be reduced.

As one preferable solution, the sliding block is slidingly connected with other components (usually a tie rod) for a long time, so that a material with high strength and high hardness, such as brass, should be selected.

Further, the support portion is provided with a first through hole and a first bolt, and the first bolt penetrates through the first through hole and then is in threaded connection with the sliding block. The top of the first through hole is provided with a sinking table with a larger diameter, the diameter of the rest part is slightly larger than that of the first bolt, but smaller than that of a nut of the first bolt, so that when the first bolt stretches into the first through hole, the nut can be clamped in the sinking table, and the first bolt is connected with the sliding block through the bolt, so that the sliding block can be connected to the supporting part. Because the aperture of the first through hole is slightly larger than the diameter of the first bolt, the first bolt is provided with a certain displacement allowance II in the first through hole, so that the sliding block is movably connected with the supporting part, and the sliding block can move in a small range by utilizing the displacement allowance II so as to correct the relative position of the sliding block and the tie bar, so that the sliding block can be attached to the peripheral surface of the tie bar, and the sliding effect is improved.

Further, the support portion is provided with a groove at a joint with the slider, the slider is mounted in the groove, and the slider has a displacement margin in a longitudinal direction of the slider itself with respect to the groove. If the sliding block and the supporting part are in sliding connection by the first bolt, the first bolt bears larger radial acting force, so that the first bolt is easy to bend or break. Therefore, as a preferable scheme, the supporting part is provided with a groove at the joint with the sliding block, and the length of the groove is slightly longer than that of the sliding block. When the sliding block is arranged in the groove, the sliding block has a first displacement allowance in the length direction of the sliding block relative to the groove, and the first displacement allowance is equal to a second displacement allowance of the first bolt relative to the first through hole. Therefore, when the sliding block moves relative to the supporting part, the groove can play a role in limiting the moving range of the sliding block, so that the stress of the first bolt is reduced, and the first bolt is further protected.

Further, the support portion is provided with a second bolt hole at the groove position, a second bolt is arranged in the second bolt hole, and the second bolt is in butt joint with the sliding block. Because the aperture of the first through hole is larger than the diameter of the first bolt, the first bolt can also move up and down along the axial direction of the first bolt after the sliding block is connected, so that the sliding block and the circumferential surface of the tie bar cannot form a supporting state, and the second bolt is required to be arranged. After the second bolt passes through the second bolt hole, the free end of the second bolt is abutted with the sliding block, and a force towards the tie bar is applied to the sliding block, so that a matching relationship can be formed between the sliding block and the tie bar, and the die is supported.

Further, the slider is provided with a pad at the abutment position of the second bolt. The backing plate can be effectively to the second bolt evenly disperse the pressure of slider on the area of backing plate, reduces pressure, guarantees that the slider can not directly receive the extrusion and warp when tightening up the second bolt, can prolong the life of slider effectively.

Further, the backing plate is detachably and fixedly connected with the sliding block. The surface of the sliding block is provided with a sinking table with the same area as the base plate, and the height of the sinking table is the same as that of the base plate, so that the base plate is flush with the sliding block after being installed. The bottom surface of the sinking platform is provided with a plurality of third bolt holes, and the third bolts penetrate through the base plate and then are screwed into the third bolt holes, so that the base plate is fixedly connected in the sinking platform. When the sliding block needs to be replaced due to abrasion, the base plate can be detached and then mounted on a new sliding block in a matched mode, and production cost is reduced.

The utility model also provides a laminated injection mold assembly, which comprises a plurality of movable templates arranged in an overlapping manner, tie bars horizontally arranged on two sides of the movable templates, and a mold supporting piece, wherein the sliding block is in sliding fit with the tie bars, and the supporting part is fixedly connected with the movable templates. When a plurality of movable templates are assembled in an overlapping way, the weight of the movable templates is often too heavy, so that the guide pillar penetrating through the die is subjected to excessive pressure and is easy to deform or bend. The moving direction of the movable template is the same as the axial direction of the tie bar. At this moment, install at movable mould board bottom mould support piece, mould support piece's supporting part and movable mould board fixed connection, slider and tie rod sliding connection, mould support piece can decompose the part weight of movable mould board to tie rod on, lets tie rod bear the part weight of movable mould board, avoids passing the guide pillar of movable mould board and bears too big weight and lead to buckling, finally leads to movable mould board trouble. Preferably, the two sides of the bottom of each movable template are symmetrically provided with the mould supporting pieces and are respectively in sliding fit with the tie bars on the same side, so that the stress is balanced, and each movable template can be supported by the tie bars during mould opening and mould closing.

Further, a fixing bolt hole is formed in the supporting portion, and a fourth bolt for connecting the supporting portion and the movable template is arranged in the fixing bolt hole. The supporting part is fixedly connected with the outer side of the movable template through a fourth bolt, so that slotting on the outer surface of the movable template can be avoided, or other butt joint structures are additionally arranged, the usable volume inside the movable template is increased, and the effective volume utilization rate of the movable template is improved.

Further, the supporting part is provided with a convex positioning block on the contact surface with the movable template, and the positioning block is matched with the concave hole on the movable template. When the supporting part is connected with the movable template, the supporting part can be quickly placed at the correct position through the positioning block and the concave hole matched with the positioning block, and the supporting part is fixedly connected with the movable template through the fourth bolt.

Furthermore, the positioning block is detachably connected with the supporting part through the fifth bolt, so that the positioning block is convenient to detach and install, and the practicability of the utility model can be further improved.

Compared with the prior art, the utility model has the beneficial effects that:

1. the sliding block is movably connected with the supporting part, a certain displacement allowance I is arranged on the sliding block relative to the supporting part in the length direction of the sliding block, the displacement allowance I can be utilized for small-range movement, the relative position of the sliding block and the tie bar is corrected, the sliding block can be attached to the peripheral surface of the tie bar, and the sliding effect is improved;

2. according to the utility model, the integrated supporting part main body is used for bearing the weight of the movable template, so that the problem that the die breaks down due to the fact that the guide post of the movable template is deformed due to overlarge stress is avoided, and the supporting part is simple in structure, easy to install and convenient and quick to maintain.

Drawings

FIG. 1 is a schematic view of a mold support according to the present utility model;

FIG. 2 is a schematic view of a stack injection mold assembly according to the present utility model;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is a schematic view of the internal structure of the view B in FIG. 3;

fig. 5 is an enlarged view of fig. 4 at C.

The graphic indicia are illustrated as follows: 1-a support; 2-a slider; 31-a first through hole; 32-a first bolt; 41-a second bolt hole; 42-a second bolt; 5-backing plate; 6-a third bolt; 71-fixing bolt holes; 72-fourth bolt; 8-positioning blocks; 9-a fifth bolt; 10-a movable template; 11-tie bars; s-displacement margin I; t-displacement margin two.

Detailed Description

The utility model is further described below in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "front", "rear", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, this is for convenience of description and simplification of the description, but does not indicate or imply that the devices or elements referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus the terms describing the positional relationship in the drawings are merely for illustration and not to be construed as limiting the present patent. The specific meaning of the terms described above will be understood by those of ordinary skill in the art as the case may be.

Embodiment one:

as shown in fig. 1, 3 or 4, the present embodiment provides a mold support, which includes a support portion 1 and a slide block 2, wherein one end of the support portion 1 is movably connected with the slide block 2, and the slide block 2 has a displacement allowance S relative to the support portion 1 in the length direction of the slide block 2.

The supporting part 1 is of an integrated structure, which is simple and practical, can ensure the rigidity strength of the supporting part and reduce the damage rate of the supporting part; the sliding block 2 in the embodiment is made of brass, has the characteristics of high strength and high hardness, has good wear resistance, and is suitable for sliding fit.

The embodiment is suitable for equipment with horizontally placed cylinders (tie bars) arranged on two sides of a die. The specific implementation mode is as follows: the supporting part 1 is fixedly connected with the die, the sliding block 2 is in sliding connection with the tie bar 11 arranged along the moving direction of the die, the weight of the die can be dispersed on the tie bar 11, the tie bar 11 bears part of the weight of the die, bending caused by overlarge weight borne by a guide post penetrating through the die is avoided, and finally the die is blocked. The sliding block 2 is movably connected with the supporting part 1, after the sliding block 2 is connected, a certain displacement allowance S is formed in the length direction of the sliding block 2 relative to the supporting part 1, the sliding block 2 can move in a small range by utilizing the displacement allowance S so as to correct the relative position of the sliding block 2 and the tie bar 1, so that the sliding block 2 can be attached to the peripheral surface of the tie bar 1, and the sliding effect is improved.

Embodiment two:

as shown in fig. 1, 3 or 4, on the basis of the first embodiment, the support portion 1 in this embodiment is provided with a first through hole 31 and a first bolt 32, the first bolt 32 passes through the first through hole 31 and is connected with the slider 2 by screw threads, and the first bolt 32 has a displacement allowance of two T in the first through hole 31. The top of the first through hole 31 is provided with a sinking platform with a larger diameter, the diameter of the rest part is slightly larger than the diameter of the first bolt 32 but smaller than the diameter of the nut of the first bolt 32, so that when the first bolt 32 stretches into the first through hole 31, the nut can be clamped in the sinking platform, and the first bolt 32 is connected with the sliding block 2 again, so that the sliding block 2 can be connected to the supporting part 1. Because the aperture of the first through hole 31 is slightly larger than the diameter of the first bolt 32, the first bolt 32 has a certain displacement allowance of two T in the first through hole 31, so that the sliding block 2 is movably connected with the support 1, and the sliding block 2 can move in a small range by utilizing the displacement allowance of two T, so that the relative position of the sliding block 2 and the tie bar 11 is corrected, the sliding block 2 can be attached to the peripheral surface of the tie bar 11, and the sliding effect is improved.

Embodiment III:

as shown in fig. 1, 3 or 4, in the second embodiment, a groove matched with the slider 2 is further provided on the supporting portion 1, the length of the groove is slightly greater than that of the slider 2, when the slider 2 is installed in the groove, the slider 2 has a displacement allowance S in the length direction of the slider 2 relative to the groove, and the displacement allowance S is equal to the displacement allowance di T of the first bolt 32 relative to the first through hole 31. The purpose of the groove is to further protect the first bolt 32. If the sliding connection between the slider 2 and the support portion 1 is achieved by the first bolt 32 alone, the first bolt 32 is subjected to a large radial force, so that the first bolt 32 is easily bent or broken. When the sliding block 2 is installed in the groove, the groove can play a role in limiting the moving range of the sliding block 2 when the sliding block 2 moves relative to the supporting part 1, so that the stress of the first bolt 32 is reduced, and the first bolt 32 is further protected.

Embodiment four:

as shown in fig. 1, 3, or 4, in the second or third embodiment, the second bolt hole 41 is provided in the support portion 1, and the second bolt 42 is provided in the second bolt hole 41, and the second bolt 42 abuts against the slider 2. Since the diameter of the first through hole 31 is larger than the diameter of the first bolt 32, the first bolt 32 can also move up and down in the axial direction thereof after the slider 2 is attached, resulting in a state where the slider 2 and the circumferential surface of the tie bar 11 cannot form a support, and therefore the second bolt 42 needs to be provided. After passing through the second bolt hole 41, the free end of the second bolt 42 abuts against the slide block 2, and applies a force to the slide block 2 toward the Xiang Gelin pillar 11, so that the slide block 2 and the tie bar 11 can form a fitting relationship, and the mold is supported. If the bottom surface of the sliding block 2 is higher than the peripheral surface of the Yu Gelin post 11, the second bolt 42 can be screwed downwards to prop against the sliding block 2, so that the sliding block 2 moves downwards until the bottom surface is attached to the peripheral surface of the tie bar 11; similarly, if the bottom surface of the slider 2 is lower than the circumferential surface of the tie bar 11, the second bolt 42 is screwed upward, so that the slider 2 moves upward until it can be slidably engaged with the tie bar 11.

Fifth embodiment:

as shown in fig. 1, 3, or 4, in the fourth embodiment, a shim plate 5 is provided at a position where the slider 2 abuts against the second bolt 42. When the free end of the second bolt 42 abuts against the slider 2 due to the large mold weight, the contact surface is extremely small, and a particularly large pressure is easily generated on the contact surface, so that the slider 2 is pressed to deform or crack. After the backing plate 5 is arranged, the backing plate 5 can effectively uniformly disperse the pressure applied by the second bolt 42 on the sliding block 2 to the area of the backing plate 5, the pressure is reduced in a mode of increasing the stress area, the sliding block 2 is protected from being deformed or generating cracks due to extrusion when the second bolt 42 is tightened, and the service life of the sliding block 2 can be effectively prolonged.

In order to further improve the practicability of the pad 5, the pad 5 in this embodiment is detachably connected to the slider 2 through a third bolt 6. The surface of the sliding block 2 is provided with a sinking platform with the same area as the backing plate 5, and the height of the sinking platform is the same as that of the backing plate 5, so that the backing plate 5 is flush with the sliding block after being installed. When the sliding block 2 needs to be replaced due to abrasion, the base plate 5 can be detached and then matched with a new sliding block 2, so that the production cost is reduced. Meanwhile, if the pad 5 loses its protection effect due to excessive stress, the damaged pad 5 can be disassembled and a new pad 5 can be installed.

Example six:

as shown in fig. 2, the present embodiment provides a laminated injection mold assembly, which includes a plurality of movable mold plates 10 arranged in an overlapping manner, tie bars 11 horizontally disposed on both sides of the movable mold plates 10, and the mold support according to any one of the first to fifth embodiments. The mould supporting parts are respectively arranged at two sides of the movable mould plate 10, one end of the sliding block 2 is in sliding fit with the tie bar 11, and the other end of the sliding block is fixedly connected with the movable mould plate 10. The movable die plate 10 is in a static state or a moving state, and the die supporting piece fixedly connected with the movable die plate can decompose part of the weight of the movable die plate 10 onto the tie bar 11 through the sliding block 2, so that the tie bar 11 bears part of the weight of the movable die plate 10, and the bending caused by overlarge weight borne by the guide post penetrating through the movable die plate 10 is avoided.

For better implementation effect, the mold supporting pieces are arranged on two sides of each movable mold plate 10 and are respectively in sliding fit with the tie bars 11 on the same side, so that the effect of balancing and supporting is achieved, and each movable mold plate 10 can be supported by the tie bars 11 during mold opening and mold closing.

In the specific content of the above embodiment, any combination of the technical features may be performed without contradiction, and for brevity of description, all possible combinations of the technical features are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The utility model provides a mould support piece, includes supporting part (1) and slider (2), supporting part (1) one end with slider (2) swing joint, its characterized in that, slider (2) have displacement surplus (S) for supporting part (1) in the length direction of slider (2).

2. The mold support according to claim 1, characterized in that the support part (1) is provided with a first through hole (31) and a first bolt (32), the first bolt (32) is threaded with the slide block (2) after passing through the first through hole (31), and the first bolt (32) has a displacement allowance of two (T) in the first through hole (31).

3. A mould support according to claim 1, characterized in that the support (1) is provided with a recess at the connection with the slide (2), in which recess the slide (2) is mounted and in relation to the recess there is a displacement margin (S) in the length direction of the slide (2).

4. A mould support according to claim 3, characterized in that the support part (1) is provided with a second bolt hole (41) at the location of the recess, a second bolt (42) being provided in the second bolt hole (41), the second bolt (42) being in abutment with the slide (2).

5. A mould support according to claim 4, characterized in that the slide (2) is provided with a shim plate (5) at the abutment with the second bolt (42).

6. A mould support according to claim 5, characterized in that the shim plate (5) is detachably fixedly connected to the slide (2).

7. The laminated injection mold assembly is characterized by comprising a plurality of movable templates (10) which are arranged in an overlapped mode, tie bars (11) horizontally arranged on two sides of the movable templates (10) and the mold support piece according to any one of claims 1-6, wherein the sliding blocks (2) are in sliding fit with the tie bars (11), and the support parts (1) are fixedly connected with the movable templates (10).

8. The laminated injection mold assembly according to claim 7, wherein the support portion (1) is provided with a fixing bolt hole (71), and a fourth bolt (72) for connecting the support portion (1) and the movable platen (10) is provided in the fixing bolt hole (71).

9. The laminated injection mold assembly according to claim 7, wherein the supporting part (1) is provided with a raised positioning block (8) on the contact surface with the movable mold plate (10), and the positioning block (8) is matched with a concave hole on the movable mold plate (10).

10. The stack injection mold assembly according to claim 9, characterized in that the positioning block (8) is detachably connected to the support (1) by means of a fifth bolt (9).

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