CN114734586A

CN114734586A - Anti-friction burning structure of injection mold

Info

Publication number: CN114734586A
Application number: CN202210244311.7A
Authority: CN
Inventors: 陈贵春; 张景均; 莫沅杰; 杨起龙; 张嘉成; 朱市文; 林家浩; 蓝振辉; 杨金梅
Original assignee: Ace Mold Zhuhai Co Ltd
Current assignee: Ace Mold Zhuhai Co Ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-07-12

Abstract

The invention discloses an anti-friction burning structure of an injection mold, which comprises: the first line position slide block can slide along the left and right directions; the first insert is connected to the first slide block in a sliding manner, slides from bottom to top to left, and one end of the first insert can protrude out of the first slide block; the second insert is detachably connected to the first slide block, the left end of the second insert protrudes out of the first slide block leftwards, the first insert penetrates through the part protruding leftwards of the second insert, and the second insert is made of wear-resistant steel; the first insert, the second insert and the first slide block are used for forming a die. The second insert is detachably connected to the first slide block, the second insert is used for replacing the part of the first slide block, which is in contact with the first insert, the first insert cannot be rubbed and burnt at the outlet of the first slide block, and the first insert cannot be rubbed and burnt at the outlet of the second insert because the second insert is made of wear-resistant steel.

Description

Anti-friction burning structure of injection mold

Technical Field

The invention relates to the technical field of molds, in particular to an anti-friction burning structure of an injection mold.

Background

The injection molding process commonly uses an injection mold, the existing injection mold comprises a first line position slide block and a first insert, the first insert is connected to the first line position slide block in a sliding mode, one end of the first insert protrudes out of the first line position slide block, and the protruding portion of the first insert and the first line position slide block are used for forming the mold.

However, in the repeated sliding process of the first insert, the first insert is easily rubbed and burned at the outlet of the first slide block, and the first insert or the first slide block is rubbed and burned, so that the injection molding process is influenced.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an anti-friction burning structure of an injection mold, which can avoid the friction burning phenomenon of a first insert at an outlet of a first slide block and prolong the service life of the first insert.

According to an embodiment of the first aspect of the invention, the scuffing-preventing structure of the injection mold comprises: the first line position slide block can slide along the left and right directions; the first insert is connected to the first slide block in a sliding manner, slides from bottom to top to left, and one end of the first insert can protrude out of the first slide block; the second insert is detachably connected to the first slide block, the left end of the second insert protrudes out of the first slide block, the first insert penetrates through the part of the second insert protruding leftwards, and the second insert is made of wear-resistant steel; the first insert, the second insert and the first slide block are used for forming a mold.

The anti-friction burning structure of the injection mold provided by the embodiment of the invention at least has the following beneficial effects: the second insert is detachably connected to the first slide, the part of the first slide, which is in contact with the first insert, is replaced by the second insert, so that the first insert protrudes out of the second insert, and the first insert cannot be burnt at the outlet of the first slide because the first insert does not protrude out of the first slide, and the first insert cannot be burnt at the outlet of the second insert because the second insert is made of wear-resistant steel; furthermore, because the second insert is removable, it may be replaced even if the second insert is damaged, without replacing the entire first index slide.

According to some embodiments of the invention, the left end of the first slide block is provided with an installation groove, and the second insert is inserted into the installation groove, so that the structure is simple and the installation is convenient.

According to some embodiments of the invention, the first slide block is provided with a pin hole, the second insert is provided with a jack, the pin can be inserted into the jack along the pin hole to fix the second insert, and the pin hole are arranged to facilitate fixing of the second insert and prevent the second insert from being brought out during sliding of the first insert.

According to some embodiments of the invention, the first slide block is provided with a dismounting hole, the right end of the second insert is accommodated in the dismounting hole, the right end of the second insert is provided with a pushing inclined plane, the dismounting hole is used for inserting a push rod, the push rod is used for contacting the pushing inclined plane to push the second insert, so that the second insert is convenient to dismount, because the second insert is hidden in the first slide block, the second insert is difficult to directly pull out, and by adopting the way that the dismounting hole is matched with the pushing inclined plane, the push rod is more convenient to push out the second insert, so that the external shape of the mold is not influenced, and the dismounting operation is also convenient.

According to some embodiments of the invention, the dismounting hole extends vertically, an axis of the dismounting hole and the ejector slope form an included angle, the vertically extending dismounting hole facilitates force application, and the included angle facilitates driving the second insert to be separated from the first slide.

According to some embodiments of the invention, the upper end of the detaching hole is provided with a bell mouth shape, so that the ejector rod can be inserted conveniently and the position of the ejector inclined plane can be observed conveniently.

According to some embodiments of the present invention, the mold further comprises a second slide block, a position-limiting post and an inclined guide post, the second slide block is slidably connected to the first slide block, the other end of the first insert is connected to the second slide block, the position-limiting post is disposed on the first slide block, the position-limiting post is used for blocking the second slide block, the first slide block is provided with an inclined guide hole, the inclined guide post is accommodated in the inclined guide hole, the inclined guide post and the second slide block are capable of moving synchronously, the second slide block and the inclined guide post are configured to achieve a delayed demolding function, the second slide block slides downwards along with the inclined guide post until the position-limiting post blocks the second slide block, and the inclined guide post can further slide downwards because the inclined guide post is disposed in the inclined guide hole, therefore, in the process that the inclined guide post slides downwards, when the inclined guide post contacts the inner wall of the inclined guide hole, the inclined guide post can generate acting force on the inner wall of the inclined guide hole to drive the first alignment slide block to move rightwards, because the first alignment slide block cannot move when the inclined guide post moves in the inclined guide hole, and when the inclined guide post contacts the inner wall of the inclined guide hole, the inclined guide post can drive the first alignment slide block to move, so that the function of delaying demolding is realized, demolding is convenient, and the workpiece is not easily damaged by the insert.

According to some embodiments of the present invention, an axis of the inclined guide post is parallel to an axis of the inclined guide hole, the inclined guide post moves downward until contacting an inner wall of the inclined guide hole, the inclined guide post can be in surface contact or line contact with the inner wall of the inclined guide hole, a contact range is wide, a driving force is more stable, the first slide block does not deviate from a sliding direction, and vibration is not easily generated.

According to some embodiments of the invention, the hook-shaped shovel base is provided with a barb portion, the hook-shaped shovel base is hooked in the barb portion, the hook-shaped shovel base is in contact with the barb portion through an inclined surface in a matching manner, the hook-shaped shovel base is used for pulling the second slide block to slide, the hook-shaped shovel base and the inclined guide pillar can synchronously move in the vertical direction, the moving direction is uniform, driving and control are convenient, and the inclined surface matching can ensure that the hook-shaped shovel base can be separated from the second slide block after pulling the second slide block and when the second slide block is in contact with the limit column, so that interference is avoided.

According to some embodiments of the present invention, the mold further includes an elastic member, one end of the elastic member is connected to the first slide block, the other end of the elastic member is connected to the second slide block, the elastic member is configured to drive the second slide block to slide, the elastic member can slide and release the second slide block, and the elastic member can keep the second slide block at a release position, that is, the first insert is kept at a release position, when the second slide block loses the limitation of the hook-shaped shovel base.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a perspective view of an anti-scuffing structure of an injection mold according to an embodiment of the present invention;

fig. 2 is an exploded perspective view of a burnout prevention structure of the injection mold shown in fig. 1;

FIG. 3 is a schematic structural view of an anti-scuffing structure of the injection mold shown in FIG. 1;

fig. 4 is an exploded view of the scuff-preventing structure of the injection mold shown in fig. 3.

The first line slide block 100, the mounting groove 110, the pin 120, the pin hole 130, the dismounting hole 140 and the inclined guide hole 150;

a first insert 200;

a second insert 300, a receptacle 310, a push ramp 320;

a second slide block 400a, a limit column 400b, an inclined guide column 400c, a hook-shaped shovel base 400d, an elastic element 400e and a barb part 410.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 4, an anti-scuffing structure of an injection mold includes: a first slide block 100 which can slide in the left-right direction; the first insert 200 is slidably connected to the first slide block 100, the first insert 200 slides from bottom to top to left, and one end of the first insert 200 can protrude out of the first slide block 100; the second insert 300 is detachably connected to the first slide block 100, the left end of the second insert 300 protrudes out of the first slide block 100, the first insert 200 passes through the left protruding part of the second insert 300, and the second insert 300 is made of wear-resistant steel; the first insert 200, the second insert 300, and the first inline slide 100 are used to make up a mold. The second insert 300 is detachably attached to the first index slide 100, and the second insert 300 is used to replace the portion of the first index slide 100 in contact with the first insert 200, so that the first insert 200 protrudes out of the second insert 300, and since the first insert 200 does not protrude out of the first index slide 100, the first insert 200 is not scraped at the outlet of the first index slide 100, and since the second insert 300 is made of wear-resistant steel, the first insert 200 is not scraped at the outlet of the second insert 300; furthermore, because the second insert 300 is removable, the second insert 300 may be replaced even if the second insert 300 is damaged, without replacing the entire first indexing slide 100. It should be noted that the anti-friction sintering mechanism of the injection mold is mainly acted by the second insert 300, the first slide blocks 100, the first insert 200 and the second insert 300 are all part of the injection mold, the two first slide blocks 100 slide relatively in the left-right direction to form a bottom cavity of the mold, the first insert 200, the second insert 300 and the angle guide column 400c mounted on the first slide blocks 100 are in one-to-one correspondence with the first slide blocks 100, that is, the two first slide blocks 100 are respectively mounted with these parts, and besides these parts, there are also slide blocks and inserts forming a top cavity of the mold. The first slide blocks 100 are slidably connected to an external injection molding machine, and the expression of the directions of "left, right, up, down, front and back" is for the attached drawings, so that the structural composition is easy to understand, and the application is not limited, and if two first slide blocks 100 relatively slide to form a bottom mold cavity, the direction needs to be judged according to the actual situation.

In some embodiments, the left end of the first slide 100 is provided with a mounting groove 110, and the second insert 300 is inserted into the mounting groove 110, so that the structure is simple and the installation is convenient.

In some embodiments, the insert further comprises a pin 120, the first slide 100 is provided with a pin hole 130, the second insert 300 is provided with a socket 310, the pin 120 can be inserted into the socket 310 along the pin hole 130 to fix the second insert 300, and the pin 120 and the pin hole 130 are arranged to facilitate fixing the second insert 300 and prevent the second insert 300 from being taken out during sliding of the first insert 200.

In some embodiments, the first slide 100 has a detachment hole 140, the right end of the second insert 300 is received in the detachment hole 140, the right end of the second insert 300 is provided with a push inclined surface 320, the detachment hole 140 is used for inserting a push rod, and the push rod is used for contacting the push inclined surface 320 to push the second insert 300, so as to facilitate detachment of the second insert 300. It will be appreciated that the ejection direction of the ejector pin, i.e. the direction in which the axis of the removal hole 140 extends, is greater than 45 ° from the ejection ramp 320.

In some embodiments, the removal hole 140 extends vertically, the axis of the removal hole 140 is angled with respect to the ejection ramp 320, the vertically extending removal hole 140 facilitates force application, and the angled angle facilitates driving the second insert 300 off of the first index slide 100.

In some embodiments, the upper end of the detachment hole 140 is flared to facilitate insertion of the ejector pin and viewing of the position of the ejection ramp 320, and it will be understood that the ejector pin is not shown in the drawings.

In some embodiments, the mold further comprises a second slide 400a, a position-limiting post 400b and a slant guide post 400c, the second slide 400a is slidably connected to the first slide 100, the other end of the first insert 200 is connected to the second slide 400a, the position-limiting post 400b is disposed on the first slide 100, the position-limiting post 400b is used for blocking the second slide 400a, the first slide 100 is provided with the slant guide hole 150, the slant guide post 400c is received in the slant guide hole 150, the slant guide post 400c and the second slide 400a are synchronously movable, the second slide 400a and the slant guide post 400c are disposed to perform a delayed mold release function, the second slide 400a slides downwards together with the slant guide post 400c until the position-limiting post 400b blocks the second slide 400a, and the slant guide post 400c can further slide downwards, because the slant guide post 400c is disposed in the slant guide hole 150, therefore, in the process that the inclined guide post 400c slides downwards, when the inclined guide post 400c contacts the inner wall of the inclined guide hole 150, the inclined guide post 400c generates an acting force on the inner wall of the inclined guide hole 150 to drive the first slide block 100 to move rightwards, because the first slide block 100 does not move when the inclined guide post 400c moves in the inclined guide hole 150, and when the inclined guide post 400c contacts the inner wall of the inclined guide hole 150, the inclined guide post 400c drives the first slide block 100 to move, so that the function of delaying demolding is realized, demolding is convenient, and the workpiece is not easily damaged by the mold insert.

In some embodiments, the axis of the inclined guide post 400c is parallel to the axis of the inclined guide hole 150, the inclined guide post 400c moves downward until contacting the inner wall of the inclined guide hole 150, the inclined guide post 400c can be in surface contact or line contact with the inner wall of the inclined guide hole 150, the contact range is wide, the driving force is more stable, the first slide block does not deviate the sliding direction, and vibration is not easily generated.

In some embodiments, the slide further includes a hook-shaped shovel base 400d, the second slide block 400a is provided with an inverted hook portion 410, the hook-shaped shovel base 400d is hooked in the inverted hook portion 410, the hook-shaped shovel base 400d is in contact with the inverted hook portion 410 through an inclined surface, the hook-shaped shovel base 400d is used for pulling the second slide block 400a to slide, the hook-shaped shovel base 400d and the inclined guide pillar 400c can synchronously move in the vertical direction, the moving direction is uniform, and driving and controlling are convenient, the inclined surface matching can ensure that the hook-shaped shovel base 400d can be separated from the second slide block 400a after pulling the second slide block 400a, when the second slide block 400a contacts the limit pillar 400b, so as to avoid interference, that after the hook-shaped shovel base 400d is pulled to a certain extent, the hook-shaped shovel base 400d can be separated from the inverted hook portion 410 of the second slide block 400a, and when the second slide block 400a is blocked by the limit pillar 400b, the hook-shaped shovel base 400d is pulled, the hook-shaped shovel 400d is disengaged from the barb 410 of the second row of sliders 400 a.

In some embodiments, the mold further includes an elastic member 400e, one end of the elastic member 400e is connected to the first slide block 100, the other end of the elastic member 400e is connected to the second slide block 400a, the elastic member 400e is used for driving the second slide block 400a to slide, the elastic member 400e can enable the second slide block 400a to slide for demolding, and the elastic member 400e can enable the second slide block 400a to be kept at the demolding position, that is, the first insert 200 is kept at the core pulling state, under the condition that the second slide block 400a loses the limitation of the hook-shaped shovel base 400 d.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. An anti-friction burning structure of an injection mold is characterized by comprising:

the first line position slide block can slide along the left and right directions;

the first insert is connected to the first slide block in a sliding manner, slides from bottom to top to left, and one end of the first insert can protrude out of the first slide block;

the second insert is detachably connected to the first slide block, the left end of the second insert protrudes out of the first slide block, the first insert penetrates through the part of the second insert protruding leftwards, and the second insert is made of wear-resistant steel;

the first insert, the second insert and the first slide block are used for forming a mold.

2. The scuff-burn preventing structure of an injection mold according to claim 1, wherein: the left end of the first slide block is provided with a mounting groove, and the second insert is inserted into the mounting groove.

3. The scuff-burn preventing structure of an injection mold according to claim 2, characterized in that: the first slide block is provided with a pin hole, the second insert is provided with a jack, and the pin can be inserted into the jack along the pin hole so as to fix the second insert.

4. The scuff-burn preventing structure of an injection mold according to claim 3, wherein: the first slide block is provided with a dismounting hole, the right end of the second insert is accommodated in the dismounting hole, the right end of the second insert is provided with a pushing inclined plane, the dismounting hole is used for inserting a push rod, and the push rod is used for contacting the pushing inclined plane to push the second insert.

5. The scuff-preventing structure of an injection mold according to claim 4, characterized in that: the disassembly hole extends vertically, and an included angle is formed between the axis of the disassembly hole and the ejection inclined plane.

6. The scuff-burn preventing structure of an injection mold according to claim 4, wherein: the upper end of the dismounting hole is in a horn mouth shape.

7. An scuff burn preventing structure of an injection mold according to any one of claims 1 to 6, characterized in that: the mold insert is characterized by further comprising a second slide block, a limiting column and an inclined guide column, the second slide block is connected with the first slide block in a sliding mode, the other end of the first insert is connected with the second slide block, the limiting column is arranged on the first slide block, the limiting column is used for blocking the second slide block, an inclined guide hole is formed in the first slide block, the inclined guide column is contained in the inclined guide hole, and the inclined guide column and the second slide block can move synchronously.

8. The scuff-burn preventing structure of an injection mold according to claim 7, wherein: the axis of the inclined guide post is parallel to the axis of the inclined guide hole.

9. The scuff-burn preventing structure of an injection mold according to claim 7, wherein: the hook-shaped shovel base is in matched contact with the barb portion through an inclined plane and used for pulling the second slide block to slide, and the hook-shaped shovel base and the inclined guide post can synchronously move vertically.

10. The scuff-burn preventing structure of an injection mold according to claim 9, wherein: the elastic piece is connected with the first slide block in a row position, the other end of the elastic piece is connected with the second slide block in a row position, and the elastic piece is used for driving the second slide block in a row position to slide.