Pitched roof mold

Abstract

The utility model discloses a pitched roof mold, and relates to the technical field of injection molding, the pitched roof mold comprises a front mold, a rear mold and an ejection mechanism, the front mold and the rear mold are oppositely arranged, and a cavity is formed between the front mold and the rear mold; the ejection mechanism comprises a first pitched roof and a second pitched roof, a first back shore surface is formed on the first pitched roof, a second back shore surface is formed on the second pitched roof, and the first back shore surface and the second back shore surface are both used for being in contact with the injection molding part in the cavity. In the injection molding state, a sizing material is injected into the cavity to form an injection molding part, the first jacking face and the second jacking face are both used for making contact with the injection molding part in the cavity and are connected with each other, under the condition that the distance between the two inverted buckles of the injection molding part is short, demolding of the inverted buckles can be achieved, and the injection molding part is convenient to use. Meanwhile, the contact area of the ejection mechanism and the injection molding part can be increased, so that the surface of the formed injection molding part is more coherent; and under the condition that the distance between the two inverted buckles of the injection molding part is short, the motion trails of the first inclined top and the second inclined top do not interfere with each other.

Description

TECHNICAL FIELD

[0001] The utility model belongs to injection molding technical field, especially related to a slanting ejection mold. BACKGROUND

[0002] Injection molding refers to a kind of processing technology that molten material is injected into mold cavity, and product is obtained after cooling material.In general, the mold includes front mold and back mold, and the front mold and back mold are matched to form a cavity.

[0003] The Chinese patent with publication number CN111958914U discloses a double slanting ejection mold, two reverse hook forming grooves on the double slanting ejection mold are arranged on the opposite sides of two slanting ejections, respectively, after the opening of the upper die plate and the lower die plate, the driving mechanism drives two ejector pins to move upward, the upper ends of two ejector pins correspondingly drive two slanting ejections to slide along the slanting grooves, since the distance between two slanting grooves gradually increases from top to bottom, the upper ends of two slanting ejections approach each other in the horizontal direction during the sliding process of two slanting ejections along two slanting grooves, that is, two reverse hook grooves approach each other in the horizontal direction, thereby realizing the demolding of the reverse hook forming groove, avoiding interference during the workpiece taking-out process, and meanwhile, two slanting ejections lift the workpiece upward, thereby facilitating the workpiece taking-down.

[0004] Although the double slanting ejection mold can lift the injection molded part with two reverse hooks, if the distance between two reverse hooks of the injection molded part is relatively close, it is easy to cause the interference of two slanting ejections of the double slanting ejection mold. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a slanting ejection mold, which can realize the mutual non-interference of the movement tracks of a first slanting ejection and a second slanting ejection even if the distance between two reverse hooks of an injection molded part is relatively close.

[0006] The technical scheme adopted to solve the above technical problem is:

[0007] The utility model embodiment provides a kind of slanting ejection mold, slanting ejection mold includes:

[0008] Front mold;

[0009] Back mold, the back mold is oppositely arranged with the front mold, and the type cavity is formed between the front mold and the back mold;

[0010] Ejection mechanism, including first slanting ejection and second slanting ejection, first top bracing surface is formed on the first slanting ejection, second top bracing surface is formed on the second slanting ejection, and the first top bracing surface and the second top bracing surface are used to contact injection molded part in the type cavity;The ejection mechanism is movably arranged in the back mold to switch between injection state and demolding state;

[0011] In the injection molding state, the first top supporting surface and the second top supporting surface are in contact with each other, and the inclination angle of the first inclined top with respect to the back mold and the inclination angle of the second inclined top with respect to the back mold are different; in the demolding state, the first top supporting surface and the second top supporting surface are separated from each other, and the first top supporting surface and the second top supporting surface are both separated from the injection molded part.

[0012] According to the inclined top mold, the first inclined top is formed with a first abutting surface, and the second inclined top is formed with a second abutting surface; in the injection molding state, the first abutting surface and the second abutting surface are in abutment; in the process of switching from the injection molding state to the demolding state, the first abutting surface slides on the second abutting surface and gradually moves away from the second abutting surface.

[0013] According to the inclined top mold, the inclination angle of the first inclined top with respect to the back mold is smaller than the inclination angle of the second inclined top with respect to the back mold.

[0014] According to the inclined top mold, the inclination angle of the first inclined top with respect to the back mold is 7 degrees, and the inclination angle of the second inclined top with respect to the back mold is 12 degrees.

[0015] According to the inclined top mold, the first inclined top and the second inclined top are arranged adjacent to each other, the first top supporting surface is provided with a first forming groove for accommodating a first undercut of the injection molded part, and the second top supporting surface is provided with a second forming groove for accommodating a second undercut of the injection molded part; in the process of switching from the injection molding state to the demolding state, the movement speed of the first inclined top in the depth direction of the first forming groove is smaller than the movement speed of the second inclined top in the depth direction of the second forming groove.

[0016] According to the inclined top mold, the inclined top mold further comprises a driving member, and the driving member is arranged on the back mold; the driving member is used for driving the first inclined top and the second inclined top to move synchronously.

[0017] According to the inclined top mold, the driving member comprises an ejection part and a driving part, the output part of the driving part is connected to the ejection part, and the first inclined top and the second inclined top are rotationally connected to the ejection part.

[0018] According to the inclined top mold, the ejection part is provided with a first fixing seat and a second fixing seat, the first inclined top is rotationally connected to the first fixing seat, and the second inclined top is rotationally connected to the second fixing seat.

[0019] According to the inclined top die provided in the embodiment of the present application, the rear die is provided with the first guide block and the second guide block, the first guide block is provided with the first inclined groove, and the second guide block is provided with the second inclined groove; the first inclined top is slidably arranged in the first inclined groove, the second inclined top is slidably arranged in the second inclined groove, and the inclination degrees of the first inclined groove and the second inclined groove are different.

[0020] According to the inclined top die provided in the embodiment of the present application, the two cavities and the two ejection mechanisms are in one-to-one correspondence.

[0021] The present application has at least the following beneficial effects:

[0022] In the injection molding state, the rubber material is injected into the cavity to form an injection molding part, the first supporting surface and the second supporting surface are both used to contact the injection molding part in the cavity, the first supporting surface and the second supporting surface are connected to each other, in the case that the distance between the two reverse buckles of the injection molding part is relatively close, the demolding of the reverse buckle can also be realized, and at the same time, the contact area of the ejection mechanism and the injection molding part can be increased, so that the surface of the formed injection molding part is more coherent and smooth, and it is more beneficial to eject the injection molding part during demolding; the inclination angle of the first inclined top relative to the rear die and the inclination angle of the second inclined top relative to the rear die are different, so that the movement speed of the first inclined top and the second inclined top relative to the rear die is different, and then the first supporting surface and the second supporting surface are separated from each other in the demolding state; in the case that the distance between the two reverse buckles of the injection molding part is relatively close, the movement trajectories of the first inclined top and the second inclined top do not interfere with each other; in the demolding state, the first supporting surface and the second supporting surface are both separated from the injection molding part, so as to take out the injection molding part. BRIEF DESCRIPTION OF DRAWINGS

[0023] The present application will be further described below in combination with the drawings and embodiments;

[0024] Figure 1 is the overall structure schematic diagram of the ejection mechanism of the inclined top die in the injection molding state provided in the embodiment of the present application;

[0025] Figure 2 is the overall structure schematic diagram of the ejection mechanism of the inclined top die in the injection molding state provided in the embodiment of the present application;

[0026] Figure 3 is the overall structure schematic diagram of the ejection mechanism of the inclined top die in the injection molding state provided in the embodiment of the present application;

[0027] Figure 4 is the overall structure schematic diagram of the ejection mechanism of the inclined top die in the injection molding state provided in the embodiment of the present application;

[0028] Figure 5 is the structure schematic diagram of the injection molding part provided in the embodiment of the present application.

[0029] The reference signs in the drawings are as follows:

[0030] 100, front mold;

[0031] 200, rear mold; 210, first guide block; 211, first inclined groove; 220, second guide block; 221, second inclined groove;

[0032] 300, ejection mechanism; 310, first inclined ejector; 311, first support block; 311a, first support surface; 312, first abutting surface; 320, second inclined ejector; 321, second support block; 321a, second support surface; 322, second abutting surface; 330, first fixed seat; 340, second fixed seat;

[0033] 400, injection molded part; 410, first undercut; 420, second undercut. DETAILED DESCRIPTION

[0034] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0035] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the present application.

[0036] In the description of the present application, if there is a word such as "several" or the like, the meaning is one or more, the meaning of more than two, greater than, less than, more than, etc. is not included in the number, above, below, within, etc. is understood to include the number. If the first, second, third is described, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0037] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installation, connection, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0038] Reference Figures 1 to 5 , the following will give several embodiments of the inclined ejector mold of the present application.

[0039] As Figures 1 to 5 shown, the inclined ejector die of the utility model embodiment, including front mould 100, back mould 200 and ejector mechanism 300, back mould 200 is opposite to the arrangement of front mould 100, and the cavity is formed between front mould 100 and back mould 200;Ejector mechanism 300 includes first inclined ejector 310 and second inclined ejector 320, and first inclined ejector 310 forms first top support surface 311a, and second inclined ejector 320 forms second top support surface 321a, and first top support surface 311a and second top support surface 321a are used to contact injection molded part 400 in the cavity;Ejector mechanism 300 is movably arranged in back mould 200 to switch between injection state and demoulding state;In injection state, first top support surface 311a and second top support surface 321a are connected with each other, and the inclination angle of first inclined ejector 310 relative to back mould 200 and the inclination angle of second inclined ejector 320 relative to back mould 200 are different;In demoulding state, first top support surface 311a and second top support surface 321a are separated from each other, and first top support surface 311a and second top support surface 321a are separated from injection molded part 400.

[0040] As Figure 1 shown, in injection state, the rubber is injected into the cavity to form injection molded part 400, and first top support surface 311a and second top support surface 321a are used to contact injection molded part 400 in the cavity, and first top support surface 311a and second top support surface 321a are connected with each other, and in the case that the distance between the two undercut of injection molded part 400 is close, the demoulding of undercut can also be realized, and the contact area of ejector mechanism 300 and injection molded part 400 can be improved, so that the surface of the formed injection molded part 400 is more coherent and smooth, and it is more conducive to ejecting injection molded part 400 during demoulding;The inclination angle of first inclined ejector 310 relative to back mould 200 and the inclination angle of second inclined ejector 320 relative to back mould 200 are different, so that the movement speed of first inclined ejector 310 and second inclined ejector 320 relative to back mould 200 is different, and then first top support surface 311a and second top support surface 321a are separated from each other in demoulding state;In the case that the distance between the two undercut of injection molded part 400 is close, the movement trajectory of first inclined ejector 310 and second inclined ejector 320 can not interfere with each other;In demoulding state, first top support surface 311a and second top support surface 321a are separated from injection molded part 400, so as to take out injection molded part 400.

[0041] Generally, first inclined ejector 310 is a rod body, and the end of first inclined ejector 310 forms first support block 311, and first support block 311 forms first support surface, and second inclined ejector 320 is a rod body, and the end of second inclined ejector 320 forms second support block 321, and second support block 321 forms second support surface. Figure 4As shown, the inclination angle b of the first inclined ejector 310 relative to the rear mold 200 is the smallest included angle between the length direction of the first inclined ejector 310 and the height direction of the rear mold 200, and the inclination angle a of the second inclined ejector 320 relative to the rear mold 200 is the smallest included angle between the length direction of the second inclined ejector 320 and the height direction of the rear mold 200; in the normal working state, the front mold 100 and the rear mold 200 are arranged along the up-down direction, the inclination angle of the first inclined ejector 310 relative to the rear mold 200 is the smallest included angle between the length direction of the first inclined ejector 310 and the vertical direction, and the inclination angle of the second inclined ejector 320 relative to the rear mold 200 is the smallest included angle between the second inclined ejector 320 and the vertical direction. The inclination angle of the first inclined ejector 310 relative to the rear mold 200 and the inclination angle of the second inclined ejector 320 relative to the rear mold 200 are different, so that the speeds of the first inclined ejector 310 and the second inclined ejector 320 moving in the horizontal direction are different in the process of switching from the injection state to the demolding state, thereby reducing the probability of interference between the first inclined ejector 310 and the second inclined ejector 320 and avoiding the jamming of the ejecting mechanism 300 in the process of ejecting the injection part 400.

[0042] In some embodiments, as shown in Figure 1 and Figure 3 A first abutting surface 312 is formed on the first inclined ejector 310, and a second abutting surface 322 is formed on the second inclined ejector 320; in the injection state, the first abutting surface 312 and the second abutting surface 322 abut; in the process of switching from the injection state to the demolding state, the first abutting surface 312 slides on the second abutting surface 322 and gradually moves away from the second abutting surface 322; by sliding of the first abutting surface 312 on the second abutting surface 322, it is beneficial to control the positional relationship between the first inclined ejector 310 and the second inclined ejector 320, avoid interference between the first inclined ejector 310 and the second inclined ejector 320, and gradually move away the first abutting surface 312 and the second abutting surface 322 through the differential motion between the first inclined ejector 310 and the second inclined ejector 320.

[0043] In some embodiments, as shown in Figure 1 and Figure 3 The inclination angle of the first inclined ejector 310 relative to the rear mold 200 is smaller than the inclination angle of the second inclined ejector 320 relative to the rear mold 200; in unit time, the ejection strokes of the first inclined ejector 310 and the second inclined ejector 320 in the vertical direction are the same, and because the inclination angle of the first inclined ejector 310 relative to the rear mold 200 is smaller than the inclination angle of the second inclined ejector 320 relative to the rear mold 200, the displacement amount of the first inclined ejector 310 in the horizontal direction is smaller than the displacement amount of the second inclined ejector 320 in the horizontal direction, that is, the two reverse buckles of the injection part 400 are sequentially separated from the ejecting mechanism 300 in the order, thereby avoiding the interference between the first inclined ejector 310 and the second inclined ejector 320.

[0044] In some embodiments, as shown inFigure 1 、 Figure 3 and Figure 4 As shown in

[0045] In some embodiments, as shown in Figure 1 、 Figure 3 and Figure 5 The first inclined ejector 310 and the second inclined ejector 320 are arranged adjacently, the first top supporting surface 311a is provided with a first forming groove for accommodating the first undercut 410 of the injection molded part 400, and the second top supporting surface 321a is provided with a second forming groove for accommodating the second undercut 420 of the injection molded part 400. In the injection molding state, the first undercut 410 of the injection molded part 400 can be formed in the first forming groove, and the second undercut 420 of the injection molded part 400 can be formed in the second forming groove. During the switching from the injection molding state to the demolding state, the movement speed of the first inclined ejector 310 in the depth direction of the first forming groove is less than the movement speed of the second inclined ejector 320 in the depth direction of the second forming groove, so that the second undercut 420 can be separated from the ejector mechanism 300 earlier than the first undercut 410.

[0046] In some embodiments, the inclined ejector mold further comprises a driving member, which is arranged on the back mold 200. The driving member is used to drive the first inclined ejector 310 and the second inclined ejector 320 to move synchronously. By providing power to the first inclined ejector 310 and the second inclined ejector 320 through one driving member, the number of parts of the mold can be reduced, and the integration of the mold can be improved. The inclination angle of the first inclined ejector 310 relative to the back mold 200 and the inclination angle of the second inclined ejector 320 relative to the back mold 200 are different, so that the horizontal displacement of the first inclined ejector 310 and the second inclined ejector 320 is different. That is to say, according to the embodiment of the present application, by using a simple structure, only one driving member can be used to realize the demolding operation of the first inclined ejector 310 and the second inclined ejector 320 at different horizontal movement speeds.

[0047] In some embodiments, the driving member comprises an ejecting part and a driving part, an output part of the driving part is connected to the ejecting part, the driving part is generally a cylinder, and a driving direction of the driving part is a vertical direction; the first inclined ejector pin 310 and the second inclined ejector pin 320 are rotationally connected to the ejecting part, the driving part drives the ejecting part to move in the vertical direction, lower ends of the first inclined ejector pin 310 and the second inclined ejector pin 320 are rotationally connected to the ejecting part, the first inclined ejector pin 310 and the second inclined ejector pin 320 move upward with the ejecting part to eject the injection molded part 400, and upper ends of the first inclined ejector pin 310 and the second inclined ejector pin 320 move in a horizontal direction, so that the first undercut 410 and the second undercut 420 are separated from the ejecting mechanism 300.

[0048] In some embodiments, as shown in Figure 1 The ejecting part is provided with a first fixing seat 330 and a second fixing seat 340, the first inclined ejector pin 310 is rotationally connected to the first fixing seat 330, and the second inclined ejector pin 320 is rotationally connected to the second fixing seat 340, so that the first fixing seat 330 and the second fixing seat 340 are more conducive to installation of the ejecting mechanism 300; for example, the first inclined ejector pin 310 can be first installed in the first fixing seat 330, the second inclined ejector pin 320 can be installed in the second fixing seat 340, and then the first fixing seat 330 and the second fixing seat 340 can be installed in the ejecting part.

[0049] In some embodiments, as shown in Figure 1 The rear mold 200 is provided with a first guide block 210 and a second guide block 220, the first guide block 210 is provided with a first inclined groove 211, and the second guide block 220 is provided with a second inclined groove 221; the first inclined ejector pin 310 is slidingly arranged in the first inclined groove 211, and the second inclined ejector pin 320 is slidingly arranged in the second inclined groove 221, and the first inclined groove 211 and the second inclined groove 221 have different inclinations.

[0050] As shown in Figure 1 and Figure 4As shown, the first inclined ejector 310 is slidingly arranged in the first inclined groove 211, the second inclined ejector 320 is slidingly arranged in the second inclined groove 221, the driving part drives the first inclined ejector 310 and the second inclined ejector 320 to work in the vertical direction, so that the lower end of the first inclined ejector 310 and the second inclined ejector 320 rotates on the ejecting part, is limited by the first inclined groove 211, the upper end of the first inclined ejector 310 moves in the horizontal direction and is separated from the first reverse buckle 410, is limited by the second inclined groove 221, the upper end of the second inclined ejector 320 moves in the horizontal direction and is separated from the second reverse buckle 420; the first inclined groove 211 and the second inclined groove 221 are different in inclination, so that the angle of the first inclined ejector 310 and the second inclined ejector 320 relative to the rear mold 200 is different, and then the working speed of the first inclined ejector 310 and the second inclined ejector 320 in the horizontal direction is different. The inclination of the first inclined groove 211 refers to the inclination of the extension direction of the first inclined groove 211 relative to the height direction of the rear mold 200; the inclination of the second inclined groove 221 refers to the inclination of the extension direction of the second inclined groove 221 relative to the height direction of the rear mold 200.

[0051] In some embodiments, two cavities are provided, and two ejecting mechanisms 300 are provided, the cavity and the ejecting mechanism 300 are one-to-one corresponding, by providing two cavities, the production efficiency of the injection molded part 400 can be improved.

[0052] The preferred embodiments of the utility model are specifically described above, but the utility model creation is not limited to the described embodiments, the skilled in the art can also make various equivalent modifications or replacements under the premise of not violating the spirit of the utility model, these equivalent modifications or replacements are all contained in the range defined by the claims of the present application.

Claims

1. A slanted ejector mold, characterized in that, include: Front mold; A rear mold, which is disposed opposite to the front mold, and a cavity is formed between the front mold and the rear mold; The ejection mechanism includes a first inclined ejector and a second inclined ejector. A first support surface is formed on the first inclined ejector, and a second support surface is formed on the second inclined ejector. Both the first support surface and the second support surface are used to contact the injection molded part within the cavity. The ejection mechanism is movably disposed on the rear mold to switch between an injection state and a demolding state. In the injection molding state, the first support surface and the second support surface are in contact with each other, and the tilt angle of the first inclined ejector relative to the rear mold and the tilt angle of the second inclined ejector relative to the rear mold are different; in the demolding state, the first support surface and the second support surface are separated from each other, and both the first support surface and the second support surface are separated from the injection molded part.

2. The inclined ejector mold according to claim 1, characterized in that, A first abutting surface is formed on the first inclined top, and a second abutting surface is formed on the second inclined top; in the injection molding state, the first abutting surface and the second abutting surface abut against each other; during the process of switching from the injection molding state to the demolding state, the first abutting surface slides on the second abutting surface and gradually moves away from the second abutting surface.

3. The inclined ejector mold according to claim 1, characterized in that, The tilt angle of the first inclined ejector relative to the rear mold is smaller than the tilt angle of the second inclined ejector relative to the rear mold.

4. The inclined ejector mold according to claim 3, characterized in that, The first inclined ejector has an inclination angle of 7 degrees relative to the rear mold, and the second inclined ejector has an inclination angle of 12 degrees relative to the rear mold.

5. The inclined ejector mold according to claim 3, characterized in that, The first and second inclined ejectors are arranged adjacent to each other. The first support surface is provided with a first molding groove for accommodating the first undercut of the injection molded part, and the second support surface is provided with a second molding groove for accommodating the second undercut of the injection molded part. During the process of switching from the injection state to the demolding state, the movement speed of the first inclined ejector in the depth direction of the first molding groove is less than the movement speed of the second inclined ejector in the depth direction of the second molding groove.

6. The inclined ejector mold according to any one of claims 1 to 5, characterized in that, The inclined ejector mold also includes a driving component, which is disposed on the rear mold; the driving component is used to drive the first inclined ejector and the second inclined ejector to move synchronously.

7. The inclined ejector mold according to claim 6, characterized in that, The driving component includes an ejector portion and a driving portion, the output portion of the driving portion is connected to the ejector portion, and the first inclined ejector and the second inclined ejector are rotatably connected to the ejector portion.

8. The inclined ejector mold according to claim 7, characterized in that, The ejector portion is provided with a first fixed seat and a second fixed seat, the first inclined ejector is rotatably connected to the first fixed seat, and the second inclined ejector is rotatably connected to the second fixed seat.

9. The inclined ejector mold according to any one of claims 1 to 5, characterized in that, The rear mold is provided with a first guide block and a second guide block. The first guide block is provided with a first inclined groove, and the second guide block is provided with a second inclined groove. The first inclined top is slidably disposed in the first inclined groove, and the second inclined top is slidably disposed in the second inclined groove. The inclinations of the first inclined groove and the second inclined groove are different.

10. The inclined ejector mold according to any one of claims 1 to 5, characterized in that, The mold cavity is provided in two parts, and the ejection mechanism is provided in two parts, with each mold cavity and ejection mechanism corresponding to the other.

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