CN218948349U - Secondary ejection die - Google Patents

Abstract

The utility model discloses a secondary ejection die which comprises an upper die set, a lower molding assembly and an ejection assembly, wherein the upper die set is arranged on the lower die set; the lower molding assembly comprises a lower molding seat, a first molding block and a second molding block, wherein the first molding block and the second molding block are sequentially arranged and pass through the lower molding seat; the ejection assembly comprises a first top plate and a second top plate which are movably arranged, a first inclined ejector rod is arranged between the first top plate and a first molding block, a second inclined ejector rod is arranged between the second top plate and a second molding block, the first top plate is limited through a lower die set and has a first stroke, the second top plate is movably arranged and has a second stroke relative to the first top plate, a first cooling input channel is arranged in the first inclined ejector rod or the second inclined ejector rod, and a second cooling input channel communicated with the first cooling input channel is arranged in the first molding block and the second molding block, so that the demolding smoothness and reliability of products are improved.

Description

Secondary ejection die

Technical Field

The utility model relates to the technical field of steam cleaning equipment, in particular to a secondary ejection die.

Background

After the injection molding of the existing plastic products in an injection mold is completed, the products are ejected out of the core of the mold by using an ejection mechanism of the mold so as to realize demolding.

However, due to different applications and different functions of the product, there are some special local features on the product, especially for the products with thinner wall thickness, and in the frame-shaped product, although the front part of the frame-shaped product has a relatively flat profile, the front part of the frame-shaped product has a relatively integral arc-shaped convex feature surface, and the inner side of the arc-shaped feature surface is also provided with a convex rib, which has multiple directions according to the design requirement of the product, so that the local features of the product are difficult to separate from the molding cavity surface, and after the molding is completed, a cooling procedure is usually required, a cooling channel is usually arranged inside the fixed mold core, the cooling channel is difficult to avoid, and a cooling channel is difficult to arrange for the movable mold core to be ejected, therefore, improvement is required for the existing ejection mechanism.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide a secondary ejection die.

The technical aim of the utility model is realized by the following technical scheme: the secondary ejection die comprises an upper die set and a lower die set which are used for forming a die cavity, wherein a lower forming assembly and an ejection assembly are arranged in the lower die set;

the lower molding assembly comprises a lower molding seat, a first molding block and a second molding block, wherein the lower molding seat is used for forming a lower molding surface, and the first molding block and the second molding block are sequentially arranged and pass through the lower molding seat;

the ejection assembly comprises a first top plate movably arranged at the bottom of the lower die set and a second top plate supported on the first top plate, wherein a first inclined ejector rod is arranged between the first top plate and a first molding block, a second inclined ejector rod is arranged between the second top plate and a second molding block, the first top plate is limited through the lower die set and has a first stroke, the second top plate is movably arranged and has a second stroke relative to the first top plate, a first cooling input channel is arranged in the first inclined ejector rod or the second inclined ejector rod, and a second cooling input channel communicated with the first cooling input channel is arranged in the first molding block and the second molding block.

Further, the lower molding assembly further comprises a third molding block, the third molding block is arranged in the lower molding seat in a penetrating manner, and the ejection assembly further comprises a straight ejector rod connected between the second top plate and the third molding block;

and the first molding block, the third molding block and at least one of the second molding blocks form a first front inner boundary of the mold cavity, the second molding block and the first molding block form a second front inner boundary of the mold cavity, and the first molding block and the lower molding seat form left and right inner boundaries of the mold cavity.

Further, the first top plate and the second top plate are respectively provided with an installation cavity, a follow-up module is arranged in the installation cavity, and the lower ends of the first inclined ejector rod and the second inclined ejector rod are arranged in the follow-up module.

Further, the follow-up module comprises slide ways arranged on two sides of the installation cavity, sliding blocks arranged in the slide ways in a sliding manner, and connecting blocks arranged between the sliding blocks on two sides in a rotating manner, wherein the connecting blocks are fixedly connected with the lower ends of the first inclined ejector rods or the second inclined ejector rods.

Further, the lower die set includes the lower bolster, and locates the side die holder of lower bolster both sides, ejecting subassembly is arranged between the side die holder, just the side die holder inboard is equipped with the spacing step that sets up with first roof relatively.

Further, a guide groove is further formed in the side die holder, a guide rod is arranged in the guide groove, and the guide rod is fixedly connected with the second inclined ejector rod.

Further, the first cooling input channel is arranged in the guide rod and the second inclined ejector rod, and the second cooling input channel is communicated in the second molding block in a transverse and longitudinal staggered manner.

Further, the lower molding assembly further comprises side molding blocks used for forming boundaries on two sides of the mold cavity, the side molding blocks are arranged on the lower mold set in a sliding mode, diagonal draw bars are fixedly arranged in the upper mold set, and the diagonal draw bars obliquely penetrate through the side molding blocks.

Further, reset components are arranged between the first top plate and the lower template and between the second top plate and the lower template, each reset component comprises a guide post and a spring sleeved on the guide post, the upper end of each spring is abutted to the bottom of the lower template, the lower end of each spring is abutted to the first top plate or the second top plate, and the lower end of each guide post is fixedly connected to the first top plate or the second top plate.

Compared with the prior art, the utility model has the following advantages and beneficial effects: the fixed lower molding seat, the movable first molding block and the movable second molding block form an inner molding surface of a mold cavity, so that most of conventional features are arranged on the lower molding seat, local special-shaped features are arranged on the first molding block and the second molding block, and meanwhile, the first molding block and the second molding block are driven to ascend through a first top plate and a first inclined ejector rod, so that one-time ejection is performed, the conventional features of a product are separated from the lower molding seat, and the second ejection is performed through a second top plate and a second inclined ejector rod, so that the separation of the local features from the second molding block is realized;

cooling water or cooling gas is introduced into the second molding block through the guide rod and the second inclined ejector rod, so that products can be cooled after ejection or in the ejection process, the demolding smoothness and reliability of the products can be improved, the external guide rod is convenient for the arrangement of cooling connecting pieces, and the internal structure of the mold is optimized.

Drawings

FIG. 1 is an exploded view of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model at a first angled jack;

FIG. 3 is a cross-sectional view of the second angled jack of the present utility model;

FIG. 4 is a state diagram of the present utility model at the time of one ejection;

FIG. 5 is a state diagram of the present utility model during the secondary ejection;

FIG. 6 is a cross-sectional view of the present utility model at a side molding block;

FIG. 7 is a schematic view of the inner molding surface of the present utility model;

FIG. 8 is a schematic diagram of the overall structure of the present utility model;

in the figure: 1. an upper module; 1.1, diagonal draw bars;

2. a lower module; 2.1, lower template; 2.2, a side die seat; 2.21, limiting steps; 2.22, a guide groove;

3. a lower molding assembly; 3.1, lower forming seat; 3.2, a first molding block; 3.3, a second molding block; 3.4, side forming blocks; 3.5, a third molding block;

4. an ejection assembly; 4.1, a first top plate; 4.2, a second top plate; 4.3, a first inclined ejector rod; 4.4, a second inclined ejector rod; 4.5, a straight ejector rod;

5. an inner molding surface; 5.1, left and right inner boundaries; 5.2, a first front inner boundary; 5.3, a second front inner boundary; 5.4, a first arc-shaped forming part; 5.5, a second arc-shaped forming part; 5.6, a first rib forming part; 5.7, a second rib forming part;

6. a first cooling input channel; 7. a second cooling input channel;

8. a follower module; 8.1, a slideway; 8.2, a sliding block; 8.3, connecting blocks;

9. a guide rod;

10. a reset assembly; 10.1, a guide post; 10.2, springs; 11. a product;

Detailed Description

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

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

As shown in fig. 1-8, a secondary ejection die comprises an upper die set 1 and a lower die set 2 for forming a die cavity, wherein a lower molding assembly 3 and an ejection assembly 4 are arranged in the lower die set 2;

the lower molding assembly 3 comprises a lower molding seat 3.1, a first molding block 3.2 and a second molding block 3.3 which are used for forming a lower molding surface, wherein the first molding block 3.2 and the second molding block 3.3 are sequentially arranged and pass through the lower molding seat 3.1 and are positioned on the same side of the lower molding seat 3.1, the first molding block 3.2, the second molding block 3.3 and the lower molding seat 3.1 form the inner side boundary of a mold cavity, and the local feature of a product 11 is arranged on the second molding block 3.3 for molding;

the ejection assembly 4 comprises a first top plate 4.1 movably arranged at the bottom of the lower die set 2 and a second top plate 4.2 supported on the first top plate 4.1, a first inclined ejector rod 4.3 is arranged between the first top plate 4.1 and the first forming block 3.2, a second inclined ejector rod 4.4 is arranged between the second top plate 4.2 and the second forming block 3.3, the product 11 is ejected obliquely through the first inclined ejector rod 4.3 and the second inclined ejector rod 4.4, a first cooling input channel 6 is arranged in the first inclined ejector rod 4.3 or the second inclined ejector rod 4.4, and a second cooling input channel 7 communicated with the first cooling input channel 6 is arranged in the first forming block 3.2 or the second forming block 3.3.

Specifically, the lower molding assembly 3 further comprises a third molding block 3.5, the third molding block 3.5 is arranged in the lower molding seat 3.1 in a penetrating manner, and the ejection assembly 4 further comprises a straight ejector rod 4.5 connected between the second top plate 4.2 and the third molding block 3.5.

As a further explanation of the molding surface, the number of the first molding blocks 3.2 and the second molding blocks 3.3 is two, and the two second molding blocks 3.3 are arranged side by side, the two first molding blocks 3.2 are arranged at two sides of the two second molding blocks 3.3, and the tops of the first molding blocks 3.2, the second molding blocks 3.3 and the lower molding seat 3.1 are coplanar and jointly form an upper inner boundary of the mold cavity, the first molding blocks 3.2 are coplanar with the outer sides of the lower molding seat 3.1 and jointly form left and right inner boundaries 5.1 of the mold cavity, and the first molding blocks 3.2, the third molding blocks 3.5 and at least one of the second molding blocks 3.3 form a first front inner boundary 5.2 of the mold cavity, the second molding blocks 3.3 and the first molding blocks 3.2 form a second front inner boundary 5.3 of the mold cavity, wherein the upper inner boundary is a horizontal plane, the left and right inner boundary 5.1, the rear inner boundary is a straight and the front inner boundary of the first front side 3.2 is an arc-shaped inner boundary, and the front side inner boundary of the second front side 3.5.2 is an arc-shaped inner boundary.

Specifically, the second molding block 3.3 has a larger duty ratio on the first and second front inner boundaries 5.3 than the first molding block 3.2, the second molding block 3.3 is provided with a first arc molding part 5.4 and a first rib molding part 5.6 for molding local features of the product 11, the third molding block 3.5 is provided with a second arc molding part 5.5 and a second rib molding part 5.7,

the first arc-shaped forming part 5.4 protrudes on the second forming block 3.3 and is spliced with the second arc-shaped forming part 5.5 to form a first front inner boundary 5.2, the first front inner boundary 5.2 is used for forming arc steps of a product 11, the first rib forming part 5.6 is concavely arranged on the second forming block 3.3 in a groove mode, the second rib forming part 5.7 is convexly arranged on the third forming block 3.5 in a convex strip mode, the second rib forming part 5.7 is perpendicular to the first rib forming part 5.6 on a vertical plane, and the first rib forming part 5.6 is further formed on two sides of the third forming block 3.5 and is positioned in the first front inner boundary 5.2.

The first top plate 4.1 is limited by the lower die set 2 and has a first stroke, the second top plate 4.2 is movably arranged and has a second stroke relative to the first top plate 4.1, in the one-time ejection process, the first top plate 4.1 drives the second top plate 4.2 to jointly advance the first stroke, at this time, the third forming block 3.5 is kept attached to the local feature of the product 11, in the oblique ejection process, the product 11 is separated from the lower forming seat 3.1, and at least partially separated from the second forming block 3.3, in order to avoid the inner rib of the product 11 from being blocked during die opening, after the first top plate 4.1 acts in place, the second top plate 4.2 acts to continue to advance the second stroke, so that the product 11 is ejected secondarily, and the product 11 is completely separated from the second forming block 3.3 and the third forming block 3.5.

Alternatively, the first top plate 4.1 and the second top plate 4.2 are respectively connected with a driving piece, and the driving piece is an oil cylinder.

Specifically, the first top plate 4.1 and the second top plate 4.2 are respectively provided with an installation cavity, a follow-up module 8 is arranged in the installation cavity, the lower ends of the first inclined ejector rod 4.3 and the second inclined ejector rod 4.4 are arranged in the follow-up module 8, and the follow-up module 8 is used for enabling the lower ends of the first inclined ejector rod 4.3 and the second inclined ejector rod 4.4 to slide along in the ejection process so as to ensure the reliability of ejection.

Specifically, the following module 8 includes a slide way 8.1 disposed at two sides of the installation cavity, a sliding block 8.2 slidably disposed in the slide way 8.1, and a connecting block 8.3 rotatably disposed between the sliding blocks 8.2 at two sides, wherein the slide way 8.1 is specifically formed in a slide seat at two sides of the installation cavity, the slide seat is fixed on the first top plate 4.1 or the second top plate 4.2 through a bolt, and the connecting block 8.3 is fixedly connected with the lower end of the first inclined top rod 4.3 or the lower end of the second inclined top rod 4.4, so that the lower ends of the first inclined top rod 4.3 and the second inclined top rod 4.4 form a floating state, thereby ensuring the action smoothness of the first inclined top rod 4.3 and the second inclined top rod 4.4 in the ejection process.

Specifically, the lower die set 2 includes lower bolster 2.1, and locates the side die holder 2.2 of lower bolster 2.1 both sides, ejecting subassembly 4 is arranged between side die holder 2.2, just side die holder 2.2 inboard is equipped with spacing step 2.21 that sets up with first roof 4.1 relatively, for realizing relative motion and synchronous motion of first roof 4.1 and second roof 4.2, first roof 4.1 supports in the bottom of second roof 4.2, the width of first roof 4.1 is greater than second roof 4.2 for after ejecting subassembly 4 passes through first stroke, first roof 4.1 offsets the backstop with spacing step 2.21, second roof 4.2 can continue advancing the second stroke through spacing step 2.21.

Specifically, the side die holder 2.2 is further provided with a guide groove 2.22 vertically arranged, a guide rod 9 is transversely arranged in the guide groove 2.22, and the guide rod 9 is fixedly connected with the second inclined ejector rod 4.4, so that the second inclined ejector rod 4.4 is guided by the guide rod 9 in the ejection process, and the stability and fluency of ejection action are ensured.

In this embodiment, as a further explanation of the first cooling input channel 6, the guide rod 9 and the second inclined ejector rod 4.4 are arranged in a hollow manner, that is, the first cooling input channel 6 is arranged in the guide rod 9 and the second inclined ejector rod 4.4, and the second cooling input channel 7 is communicated in the second molding block 3.3 in a staggered manner in a transverse-longitudinal direction, so that the product 11 can be cooled in any ejection process, which is beneficial to the plastic retention of the product 11 and avoids the adhesion of the product 11 on the molding surface.

Specifically, lower shaping subassembly 3 is still including being used for constituting the side shaping piece 3.4 of die cavity front and back outer boundary, side shaping piece 3.4 slides and sets up on lower module 2, go up module 1 internal fixation and be equipped with diagonal draw bar 1.1, diagonal draw bar 1.1 slant wears to locate in side shaping piece 3.4, in last module 1 and the relative open process of lower module 2, diagonal draw bar 1.1 drives side shaping piece 3.4 keeps away from the die cavity and marches, then ejecting subassembly 4 action carries out the secondary ejecting.

Specifically, a reset assembly 10 is disposed between the first top plate 4.1 and the lower die plate 2.1, and between the second top plate 4.2 and the lower die plate 2.1, the reset assembly 10 includes a guide post 10.1, and a spring 10.2 sleeved on the guide post 10.1, the upper end of the spring 10.2 is abutted to the bottom of the lower die plate 2.1, the lower end of the spring 10.2 is abutted to the first top plate 4.1 or the second top plate 4.2, and the lower end of the guide post 10.1 is fixedly connected to the first top plate 4.1 or the second top plate 4.2, and the spring 10.2 is respectively disposed on the first top plate 4.1 and the second top plate 4.2, so that the automatic reset is achieved after the driving force of the ejection assembly 4 is canceled.

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

Claims (10)

1. The secondary ejection die comprises an upper die set (1) and a lower die set (2) which are used for forming a die cavity, and is characterized in that a lower forming assembly (3) and an ejection assembly (4) are arranged in the lower die set (2);

the lower molding assembly (3) comprises a lower molding seat (3.1), a first molding block (3.2) and a second molding block (3.3) which are used for forming a lower molding surface, wherein the first molding block (3.2) and the second molding block (3.3) are sequentially arranged and pass through the lower molding seat (3.1) to form an inner molding surface (5) of a mold cavity;

the ejection assembly (4) comprises a first top plate (4.1) movably arranged at the bottom of the lower die set (2) and a second top plate (4.2) supported on the first top plate (4.1), wherein a first inclined top rod (4.3) is arranged between the first top plate (4.1) and the first forming block (3.2), a second inclined top rod (4.4) is arranged between the second top plate (4.2) and the second forming block (3.3), the first top plate (4.1) is limited by the lower die set (2) and has a first stroke, the second top plate (4.2) is movably arranged and has a second stroke relative to the first top plate (4.1), a first cooling input channel (6) is arranged in the first inclined top rod (4.3) or the second inclined top rod (4.4), and a second cooling input channel (7) communicated with the first cooling input channel (6) is arranged in the first forming block (3.2) and the second forming block (3.3).

2. A secondary ejection die as in claim 1, wherein: the lower molding assembly (3) further comprises a third molding block (3.5), the third molding block (3.5) is arranged in the lower molding seat (3.1) in a penetrating mode, and the ejection assembly (4) further comprises a straight ejector rod (4.5) connected between the second top plate (4.2) and the third molding block (3.5).

3. A secondary ejection die as in claim 2, wherein: and the first molding block (3.2), the third molding block (3.5) and at least one of the second molding blocks (3.3) form a first front inner boundary (5.2) of the mold cavity, the second molding block (3.3) and the first molding block (3.2) form a second front inner boundary (5.3) of the mold cavity, and the first molding block (3.2) and the lower molding seat (3.1) form left and right inner boundaries (5.1) of the mold cavity.

4. A secondary ejection die as in claim 1, wherein: the first top plate (4.1) and the second top plate (4.2) are respectively provided with an installation cavity, a follow-up module (8) is arranged in each installation cavity, and the lower ends of the first inclined ejector rod (4.3) and the second inclined ejector rod (4.4) are arranged in the follow-up module (8).

5. The secondary ejection die of claim 4, wherein: the follow-up module (8) comprises slide ways (8.1) arranged on two sides of the installation cavity, sliding blocks (8.2) arranged in the slide ways (8.1) in a sliding mode, and connecting blocks (8.3) arranged between the sliding blocks (8.2) on two sides in a rotating mode, and the connecting blocks (8.3) are fixedly connected with the lower ends of the first inclined ejector rods (4.3) or the second inclined ejector rods (4.4).

6. A secondary ejection die as in claim 1, wherein: the lower die set (2) comprises a lower die plate (2.1) and side die holders (2.2) arranged on two sides of the lower die plate (2.1), the ejection assembly (4) is arranged between the side die holders (2.2), and limiting steps (2.21) which are arranged opposite to the first top plate (4.1) are arranged on the inner side of the side die holders (2.2).

7. The secondary ejection die of claim 6, wherein: the side die seat (2.2) is further provided with a guide groove (2.22), a guide rod (9) is arranged in the guide groove (2.22), and the guide rod (9) is fixedly connected with the second inclined ejector rod (4.4).

8. The secondary ejection die of claim 7, wherein: the first cooling input channels (6) are arranged in the guide rods (9) and the second inclined ejector rods (4.4), and the second cooling input channels (7) are communicated in the second molding blocks (3.3) in a transverse and longitudinal staggered mode.

9. A secondary ejection die as in claim 1, wherein: the lower molding assembly (3) further comprises side molding blocks (3.4) used for forming boundaries on two sides of the mold cavity, the side molding blocks (3.4) are slidably arranged on the lower mold set (2), the upper mold set (1) is internally fixedly provided with an inclined pull rod (1.1), and the inclined pull rod (1.1) obliquely penetrates through the side molding blocks (3.4).

10. A secondary ejection die as in claim 1, wherein: the utility model discloses a lower bolster, including first roof (4.1) and lower bolster (2.1), second roof (4.2) and lower bolster (2.1) between all be equipped with reset assembly (10), reset assembly (10) are including guide post (10.1) to and spring (10.2) of cover on guide post (10.1), spring (10.2) upper end butt in lower bolster (2.1) bottom, spring (10.2) lower extreme butt is on first roof (4.1) or second roof (4.2), guide post (10.1) lower extreme fixed connection is on first roof (4.1) or second roof (4.2).

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