CN217621904U - Large aspect ratio plastic desktop board anti-deformation secondary ejection mold - Google Patents

Abstract

The utility model belongs to the technical field of molds, and in particular relates to a large aspect ratio plastic desktop board anti-deformation secondary ejection mold. The utility model comprises an upper mold for injection molding of a desktop board and a lower mold for injection molding of a desktop board. In the injection molding process of the utility model, the upper mold for injection molding of the desktop board and the lower mold for injection molding of the desktop board are close to each other, so that the molding protrusion and the molding cavity are abutted and matched to form a complete cavity, and the molten material is injected into the cavity through the injection part. Inside, injection molding is performed. After injection molding is completed, the mold is opened, and the anti-deformation multiple ejection assembly is moved. The bottom of the molded plastic part is initially ejected through the anti-deformation multiple ejection assembly, and then the edge of the plastic part is initially ejected. Carry out secondary ejection with the end, and adopt a multiple ejection structure to avoid damage to the ejection part of the plastic part during the ejection process, play a role in preventing deformation, improve the quality of the plastic part, and the ejection accuracy high.

Description

Large aspect ratio plastic desktop board anti-deformation secondary ejection mold

technical field

The utility model belongs to the technical field of molds, and relates to a large aspect ratio plastic table top plate anti-deformation secondary ejection mold.

Background technique

The plastic desktop board is suitable for a variety of table types, with low cost and a wide range of applications. Generally, injection molds are used for production and manufacture. The ejection area and range are small, the ejection effect is average, and it is easy to cause damage to the ejection part of the plastic part, resulting in the deformation of the plastic part, and the quality of the plastic is relatively general.

In order to overcome the deficiencies of the existing technology, people have come up with various solutions through continuous exploration. For example, a Chinese patent discloses an injection molding mold for a combined plastic table top board [application number: 201920273136.8], including a fixed template , a movable template, a mold core and a mold core fixing plate, the movable template is set relative to the fixed mold to open and close the mold, the fixed template is provided with a mold core fixing plate, and the mold core fixing plate is detachably provided with several Die cores, a plurality of the die cores are sequentially assembled in the horizontal plane to form a punch structure matching the contour of the bottom surface of the desktop board, and the bottom surface of the fixed die plate is concavely provided with a concave mold structure matching the contour of the top surface of the desktop board. However, during the ejection and demolding process of this solution, the ejection area and range are still small, the ejection effect is average, and it is easy to cause damage to the ejection part of the plastic part, resulting in the deformation of the plastic part, and the quality of the plastic is relatively general.

SUMMARY OF THE INVENTION

The purpose of this utility model is to solve the above problems, to provide a large aspect ratio plastic desktop board anti-deformation secondary ejection mold.

In order to achieve the above object, the utility model adopts the following technical solutions:

A large aspect ratio plastic desktop board anti-deformation secondary ejection mold, comprising a desktop board injection upper mold and a desktop board injection lower mold, the desktop board injection lower mold is provided with a molding protrusion, the There is a molding cavity in the upper injection mold of the desktop board, the molding protrusions correspond to the positions of the molding cavity and the shapes are matched. Corresponding to the position of the molding cavity, there is an anti-deformation multiple ejection component under the table top injection lower mold that can move close to or away from one end of the table top injection lower mold. The components correspond to the positions of the formed protrusions.

In the above-mentioned large aspect ratio plastic desktop board anti-deformation secondary ejection mold, the anti-deformation multiple ejection assembly includes an ejector rod fixing plate arranged below the desktop board injection molding lower mold, the said A straight top and an inclined top are arranged on the fixing plate of the ejector rod, the straight top and the inclined top respectively correspond to the positions of the forming protrusions, and the straight top and the inclined top are arranged alternately.

In the above-mentioned large aspect ratio plastic desktop board anti-deformation secondary ejection mold, the straight top includes a plurality of straight ejector rods arranged on the ejector rod fixing plate, and the plurality of straight ejector rods are parallel to each other The straight top rod is slidably matched with the lower injection mold of the desktop board.

In the above-mentioned large aspect ratio plastic desktop board anti-deformation secondary ejection mold, the sloping top comprises a plurality of side sloping ejector rods arranged on the ejector rod fixing plate, and the side sloping top The rods are staggered with straight top rods.

In the above-mentioned large aspect ratio plastic desktop board anti-deformation secondary ejection mold, the edge inclined ejector rod is provided with a first top block, and the cross-sectional area of the first top block is larger than that of the side The cross-sectional area of the inclined top rod, the included angle between the center line of the first top block and the center line of the straight top rod is an acute angle.

In the above-mentioned large aspect ratio plastic desktop board anti-deformation secondary ejection mold, the ejector rod fixing plate is provided with a first connecting slide, and the first connecting slide is provided with a horizontal A chute, the side inclined ejector rod is slidably matched with the transverse chute.

In the above-mentioned large aspect ratio plastic desktop board anti-deformation secondary ejection mold, the ejector rod fixing plate is provided with a plurality of end oblique ejector rods, and the end oblique ejector rods are provided with The second top block, the cross-sectional area of the second top block is larger than the cross-sectional area of the end oblique ejector rod, and the end oblique ejector rod and the side oblique ejector rod are staggered.

In the above-mentioned large aspect ratio plastic desktop board anti-deformation secondary ejection mold, the ejector rod fixing plate is provided with a second connecting slide, and the second connecting slide is provided with a longitudinal direction A chute, the end inclined ejector rod is slidably matched with the longitudinal chute, and the center line of the longitudinal chute is perpendicular to the center line of the longitudinal chute.

In the above-mentioned large aspect ratio plastic desktop board anti-deformation secondary ejection mold, the forming protrusion is provided with a number of embedded auxiliary forming blocks, and the embedded auxiliary forming blocks are connected to the forming cavity. corresponding to the location.

In the above-mentioned large aspect ratio plastic desktop board anti-deformation secondary ejection mold, the injection molded part includes an injection molding main board arranged above the desktop board injection molding upper mold, and the injection molding main board is provided with an injection molding main barrel. , the main injection molding cylinder is communicated with the molding cavity.

Compared with the existing technology, the advantages of the present utility model are:

1. During the injection molding process of the present utility model, the upper mold for injection molding of the desktop board and the lower mold for injection molding of the table top board are close to each other, so that the molding protrusion and the molding cavity are abutted and matched to form a complete cavity. In the cavity, injection molding is performed. After the injection molding is completed, the mold is opened, and the anti-deformation multiple ejection assembly is moved. The bottom of the molded plastic part is initially ejected through the anti-deformation multiple ejection assembly. The edge and end are ejected twice, and the multiple ejection structure is adopted to avoid damage to the ejection part of the plastic part during the ejection process, which plays a role in preventing deformation and improves the quality of the plastic part. High accuracy.

2. The utility model uses an embedded auxiliary molding block to assist the molding of plastic parts, and adopts an embedded structure, which is convenient for maintenance and cleaning, reduces labor intensity, and has good practicability.

Other advantages, objects, and features of the present invention will be manifested in part by the description below, and in part will be understood by those skilled in the art from the study and practice of the present invention.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

Figure 2 is a schematic diagram of the partial structure of the present invention.

FIG. 3 is a schematic view of the partial structure of the present invention in another direction.

Figure 4 is a schematic structural diagram of an upper mold for injection molding of a desktop board.

In the figure: upper mold for tabletop injection molding 1, lower mold for tabletop injection molding 2, molding protrusion 3, molding cavity 4, injection part 5, anti-deformation multiple ejector assembly 6, ejector rod fixing plate 7, straight top 8 , inclined top 9, straight top rod 10, side inclined top rod 11, first top block 12, first connecting slide 13, end inclined top rod 14, second top block 15, second connecting slide 16, The auxiliary molding block 17 , the injection molding main board 18 , and the injection molding main cylinder 19 are embedded.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1-4, a large aspect ratio plastic desktop board anti-deformation secondary ejection mold, including desktop board injection molding upper mold 1 and desktop board injection molding lower mold 2, the desktop board injection molding lower mold 2 is provided with a molding protrusion 3, the table top injection molding upper mold 1 is provided with a molding cavity 4, and the molding protrusion 3 corresponds to the position of the molding cavity 4 and the shape is matched. There is an injection part 5 above the upper mold 1 for injection molding of the desktop board, and the injection part 5 corresponds to the position of the molding cavity 4; An anti-deformation multiple ejection assembly 6 that moves at one end of the mold 2 corresponds to the position of the molding protrusion 3 .

In this embodiment, during the injection molding process, the table top injection mold 1 and the table top injection lower mold 2 are brought close to each other, so that the molding protrusions 3 and the molding concave cavity 4 abut and cooperate to form a complete cavity, and the molten material The injection molding part 5 is injected into the cavity, and injection molding is performed. After the injection molding is completed, the mold is opened, and the anti-deformation multiple ejection assembly 6 is moved. Ejection, and then carry out secondary ejection of the edge and end of the plastic part, using a multiple ejection structure to avoid damage to the ejection part of the plastic part during the ejection process, play a role in preventing deformation, improve The quality of the plastic parts is improved, and the ejection accuracy is high.

1-4, the anti-deformation multiple ejection assembly 6 includes an ejector rod fixing plate 7 arranged under the lower injection mold 2 of the desktop board, and the ejector rod fixing plate 7 is provided with a straight The top 8 and the inclined top 9, the straight top 8 and the inclined top 9 respectively correspond to the positions of the forming protrusions 3, and the straight top 8 and the inclined top 9 are arranged alternately.

Specifically, after the injection molding is completed, the mold is opened, the ejector rod fixing plate 7 is moved, and the straight top 8 and the inclined top 9 are driven to move synchronously by the ejector rod fixing plate 7. The bottom is initially ejected first, and then the edges and ends of the plastic parts are ejected twice through the inclined top 9. The straight top and inclined top cooperate with each other, and a multiple ejection structure is adopted to avoid the plastic parts during the ejection process. The ejection part of the parts causes damage, plays the role of anti-deformation, improves the quality of the plastic parts, and has high ejection accuracy.

1 and 3, the straight top 8 includes a plurality of straight ejector rods 10 arranged on the ejector rod fixing plate 7, and the plurality of straight ejector rods 10 are arranged in parallel with each other, and the straight ejector rods 10 is slidingly matched with the lower mold 2 for injection molding of the desktop board.

In this embodiment, after the injection molding is completed, the mold is opened, the ejector rod fixing plate 7 is moved, and the straight ejector rod 10 and the inclined top 9 are driven to move synchronously by the ejector rod fixing plate 7. The bottom of the plastic part is initially ejected first, with a wide range of straight tops and a large ejection area.

The inclined top portion 9 includes a plurality of side inclined ejector rods 11 arranged on the ejector rod fixing plate 7 , and the side inclined ejector rods 11 and the straight ejector rods 10 are alternately arranged.

In this embodiment, after the straight top is carried out first, the edge of the plastic part is ejected twice through the edge inclined ejector rod 11. The straight and inclined tops cooperate with each other, and a multiple ejection structure is adopted to avoid the ejection. During the process, the ejection part of the plastic part is damaged, which plays a role in preventing deformation, improves the quality of the plastic part, and has high ejection accuracy.

As shown in FIG. 3 , a first top block 12 is provided on the side inclined top rod 11 , and the cross-sectional area of the first top block 12 is larger than the cross-sectional area of the side inclined top rod 11 . The included angle between the center line of the first top block 12 and the center line of the straight top rod 10 is an acute angle.

In this embodiment, the first top block 12 can increase the ejection area of the side inclined top, and the ejection effect is better. The angle between the center line of the first top block 12 and the center line of the straight ejector rod 10 is Acute angle, the ejection structure is reasonable, and will not collide with each other.

The ejector rod fixing plate 7 is provided with a first connecting slide 13, the first connecting slide 13 is provided with a transverse chute, and the edge inclined ejector rod 11 slides with the transverse chute Cooperate.

In this embodiment, through the sliding cooperation between the side oblique ejector rod 11 and the transverse chute, the side oblique ejector rod 11 can slide during the ejection process to complete the oblique ejection action.

The ejector rod fixing plate 7 is provided with a plurality of end inclined ejector rods 14, and the end inclined ejector rod 14 is provided with a second top block 15. The cross-sectional area of the second top block 15 Greater than the cross-sectional area of the end oblique ejector rods 14 , the end oblique ejector rods 14 and the side oblique ejector rods 11 are staggered.

In this embodiment, the end of the plastic part is ejected twice by the end oblique ejector rod 14, and the cross-sectional area of the second ejector block 15 is larger than the cross-sectional area of the end oblique ejector rod 14, which can increase the end portion The ejection area of the inclined roof is better.

With reference to FIG. 3 , the ejector rod fixing plate 7 is provided with a second connecting slide 16 , the second connecting slide 16 is provided with a longitudinal chute, and the end inclined ejector rod 14 In sliding cooperation with the longitudinal chute, the center line of the longitudinal chute is perpendicular to the center line of the longitudinal chute.

In this embodiment, through the sliding cooperation between the end oblique ejector rod 14 and the longitudinal chute, the end oblique ejector rod 14 can slide during the ejection process to complete the oblique top action. The center lines of the longitudinal chutes are perpendicular to each other to ensure that the angles of the end inclined roof and the side inclined roof are different, and the ejection range of the inclined roof is increased, and the ejection effect is better.

Referring to FIG. 2 and FIG. 4 , the forming protrusions 3 are provided with a plurality of embedded auxiliary forming blocks 17 , and the embedded auxiliary forming blocks 17 correspond to the positions of the forming cavity 4 .

In this embodiment, the built-in auxiliary forming block 17 is used to assist the forming of plastic parts, and the built-in structure is adopted, which is convenient for maintenance and cleaning, reduces labor intensity, and has good practicability.

As shown in FIG. 1 , the injection molding part 5 includes an injection molding main board 18 arranged above the upper injection mold 1 of the desktop board. The cavity 4 is communicated.

In this embodiment, during the injection molding process, the molten material is injected into the injection molding main barrel 19 and then into the mold cavity to complete the injection molding.

The working principle of the utility model is:

During the injection molding process, the upper mold 1 for tabletop injection and the lower mold 2 for tabletop injection are brought close to each other, so that the molding protrusion 3 abuts against the molding cavity 4 to form a complete cavity, and the auxiliary molding block 17 is embedded to Auxiliary molding plastic parts, using embedded structure, easy maintenance and cleaning, reduce labor intensity, good practicability,

The molten material is injected into the injection molding main barrel 19, and then into the cavity for injection molding. After the injection molding is completed, the mold is opened, the ejector rod fixing plate 7 is moved, and the ejector rod fixing plate 7 drives the straight ejector rod 10 and the edge The oblique ejector bar 11 and the end oblique ejector bar 14 move synchronously, and the bottom of the molded plastic part is initially ejected by the straight ejector bar 10. The straight ejection range is wide and the ejection area is large.

After the straight top is carried out first, the edge of the plastic part is ejected twice through the edge inclined ejector rod 11. The straight and inclined tops cooperate with each other, and a multiple ejection structure is adopted to avoid the ejection process. It can prevent damage to the ejection part of the parts, play a role in preventing deformation, improve the quality of the plastic parts, and the ejection accuracy is high.

The first top block 12 can increase the ejection area of the side inclined top, and the ejection effect is better. Reasonable, will not collide with each other,

Through the sliding cooperation between the side oblique ejector rod 11 and the transverse chute, the side oblique ejector rod 11 can slide during the ejection process to complete the oblique top action.

The end of the plastic part is ejected twice by the end oblique ejector rod 14, and the cross-sectional area of the second ejector block 15 is larger than the cross-sectional area of the end oblique ejector rod 14, which can increase the ejection of the end oblique ejector. area, the ejection effect is better,

Through the sliding cooperation between the end oblique ejector rod 14 and the longitudinal chute, the end oblique ejector rod 14 can slide during the ejection process to complete the oblique top action. The center line of the longitudinal chute and the center of the longitudinal chute The lines are perpendicular to each other, to ensure that the angles of the end lifter and the side lifter are different, increase the ejection range of the lifter, and the ejection effect is better.

The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or additions to the specific embodiments described or substitute in similar manners, but will not deviate from the spirit of the present invention.

Although this paper mostly uses the upper mold 1 for tabletop injection molding, the lower mold for tabletop injection molding 2, the molding protrusion 3, the molding cavity 4, the injection part 5, the anti-deformation multiple ejector assembly 6, the ejector rod fixing plate 7, Straight top 8, inclined top 9, straight top rod 10, side inclined top rod 11, first top block 12, first connecting slide 13, end inclined top rod 14, second top block 15, second connecting slide The terms such as table 16 , embedded auxiliary molding block 17 , injection molding main plate 18 , injection molding main barrel 19 , etc., do not exclude the possibility of using other terms. These terms are only used to describe and explain the essence of the present invention more conveniently, and it is contrary to the spirit of the present invention to interpret them as any kind of additional limitations.

Claims (10)

1. The utility model provides a big length-width ratio plastics desktop board preapre for an unfavorable turn of events shape secondary ejection drawing of patterns mould, includes desktop board injection mold (1) and desktop board injection mold lower mould (2), its characterized in that, desktop board injection mold lower mould (2) on be equipped with shaping arch (3), desktop board injection mold (1) in be equipped with shaping cavity (4), shaping arch (3) and the position of shaping cavity (4) corresponding and the shape match and fit, desktop board injection mold (1) top be equipped with injection molding (5), injection molding (5) and the position of shaping cavity (4) corresponding, injection mold lower mould (2) below be equipped with can follow near or keep away from desktop board injection mold lower mould (2) one end removal preapre for an unfavorable turn of events shape ejecting subassembly (6) many times and the position of shaping arch (3) corresponding.

2. The secondary ejection demolding mold for the plastic desktop plate with the large length-width ratio as claimed in claim 1, wherein the secondary ejection demolding mold for preventing deformation of the plastic desktop plate comprises an ejection rod fixing plate (7) arranged below the lower injection molding die (2) of the desktop plate, the ejection rod fixing plate (7) is provided with a straight top portion (8) and an inclined top portion (9), the straight top portion (8) and the inclined top portion (9) correspond to the forming protrusion (3) respectively, and the straight top portion (8) and the inclined top portion (9) are arranged in a staggered manner.

3. The anti-deformation secondary ejection demolding mold for the plastic desktop plate with the large length-width ratio as claimed in claim 2, wherein the straight top portion (8) comprises a plurality of straight ejector rods (10) arranged on the ejector rod fixing plate (7), the straight ejector rods (10) are arranged in parallel, and the straight ejector rods (10) are in sliding fit with the desktop plate injection lower mold (2).

4. The secondary ejection demolding mold for the plastic desktop plate with the large length-width ratio as claimed in claim 3, wherein the inclined top portion (9) comprises a plurality of side inclined ejector rods (11) arranged on the ejector rod fixing plate (7), and the side inclined ejector rods (11) and the straight ejector rods (10) are arranged in a staggered manner.

5. The anti-deformation secondary ejection demolding mold for the plastic desktop plate with the large length-width ratio as claimed in claim 4, wherein a first ejector block (12) is arranged on the side inclined ejector rod (11), the cross sectional area of the first ejector block (12) is larger than that of the side inclined ejector rod (11), and an included angle between the center line of the first ejector block (12) and the center line of the straight ejector rod (10) is an acute angle.

6. The secondary ejection demolding mold for preventing deformation of the plastic desktop plate with the large length-width ratio as claimed in claim 5, wherein a first connecting sliding table (13) is arranged in the ejector rod fixing plate (7), a transverse sliding groove is arranged in the first connecting sliding table (13), and the edge oblique ejector rod (11) is in sliding fit with the transverse sliding groove.

7. The anti-deformation secondary ejection demolding mold for the plastic desktop plate with the large length-width ratio as claimed in claim 6, wherein a plurality of end inclined ejector rods (14) are arranged on the ejector rod fixing plate (7), second ejector blocks (15) are arranged on the end inclined ejector rods (14), the cross-sectional area of each second ejector block (15) is larger than that of each end inclined ejector rod (14), and the end inclined ejector rods (14) and the side inclined ejector rods (11) are arranged in a staggered manner.

8. The plastic table panel anti-deformation secondary ejection demolding die for the large length-width ratio as claimed in claim 7, wherein a second connecting sliding table (16) is arranged in the ejector rod fixing plate (7), a longitudinal sliding groove is arranged in the second connecting sliding table (16), the end inclined ejector rod (14) is in sliding fit with the longitudinal sliding groove, and the central line of the longitudinal sliding groove is perpendicular to the central line of the longitudinal sliding groove.

9. The secondary ejection demolding mold for the plastic desktop plate with the large length-width ratio as claimed in claim 8, wherein a plurality of embedded auxiliary molding blocks (17) are arranged in the molding protrusion (3), and the embedded auxiliary molding blocks (17) correspond to the molding cavity (4).

10. The anti-deformation secondary ejection demolding mold for the plastic desktop plate with the large length-width ratio as claimed in claim 9, wherein the injection molding part (5) comprises an injection molding main plate (18) arranged above the desktop plate injection upper mold (1), an injection molding main cylinder (19) is arranged in the injection molding main plate (18), and the injection molding main cylinder (19) is communicated with the molding cavity (4).

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