CN216068449U - Die set - Google Patents

Abstract

The utility model discloses a die which comprises an upper die, a lower die set, a die plate base and an elastic piece die set. The upper die is provided with a glue inlet and a first binding surface; the lower die set comprises a lower die frame and a die core, the lower die frame is provided with a forming hole and a second binding surface, the die core is provided with a forming surface, the die core is positioned in the forming hole, the first binding surface can be bound with the second binding surface, the forming surface, the side wall of the forming hole and the first binding surface define a die cavity, and the die cavity is communicated with the glue inlet; the template base is provided with a first accommodating groove, the lower die frame is movably connected to the template base, the die core is fixed to the template base, and an opening of the first accommodating groove faces the lower die frame; the elastic piece module comprises an elastic piece, one end of the elastic piece abuts against the bottom of the first accommodating groove, and the other end of the elastic piece is used for supporting the lower die frame. The lower die frame can move under the action of external force so as to reduce the size of the die cavity, thin and uniform the product, reduce burrs, reduce the stress of the product and prevent the product from warping and deforming.

Description

Die set

Technical Field

The utility model relates to the technical field of injection molding processing, in particular to a mold.

Background

At present, in the related technology, when the thickness of a product is less than or equal to 0.3MM, only by the action of simple injection pressure, it is difficult to ensure that the whole cavity can be simultaneously and uniformly filled, and orientation can occur during injection molding, so that internal stress exists in the molded plastic thin part, which causes warping deformation and even breakage, and causes undesirable phenomena of uneven thickness, shrinkage, flash and the like of the product.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the mold which can thin the light plate of the product, reduce the occurrence of shrinkage and flash of the product and improve the quality of the product.

The embodiment of the utility model provides a die, which comprises:

the upper die is provided with a glue inlet and a first binding surface;

a lower module; the lower die frame is provided with a forming hole and a second attaching surface, the mold core is provided with a forming surface, the mold core is positioned in the forming hole, the first attaching surface can be attached to the second attaching surface, the forming surface, the side wall of the forming hole and the first attaching surface define a mold cavity, and the mold cavity is communicated with the glue inlet;

the mold comprises a template base, a lower mold frame and a mold core, wherein the template base is provided with a first accommodating groove, the lower mold frame is movably connected to the template base, the mold core is fixed on the template base, and an opening of the first accommodating groove faces the lower mold frame;

the elastic piece module comprises an elastic piece, one end of the elastic piece abuts against the bottom of the first accommodating groove, the other end of the elastic piece is used for supporting the lower die frame, so that the lower die frame is located at a first set position, and the lower die frame can move between the first set position and a second set position under the action of external force, so that the size of the die cavity is increased or reduced;

the lower die frame can have a set gap with the die plate base at the first set position, and can abut against the die plate base at the second set position.

The mold provided by the embodiment of the utility model has at least the following beneficial effects:

when the melt is injected, the elastic piece is supported on the lower die frame to expand the die cavity, and a set gap is formed between the lower die frame and the die plate base. After the mold cavity melt is injected to a certain degree, the lower mold frame and the mold plate base are pressed through external force so as to reduce the size of the mold cavity, the mold cavity is completely filled with the melt, the product is thinned, the thickness is uniform, burrs are reduced, the stress of the product can be reduced, and the product is prevented from warping and deforming.

According to some embodiments of the present invention, the mold further comprises a first connecting member, the mold base is provided with a first mounting hole, a surface of the mold core opposite to the molding surface is provided with a first connecting hole, the first connecting member is inserted into the first mounting hole and connected to the mold core through the first connecting hole to fix the mold core to the mold base, the lower mold frame is movably connected to the mold base, and the lower mold frame can abut against the mold base at the second setting position.

According to some embodiments of the utility model, the template base further comprises a second connecting piece, the second connecting piece is provided with a first blocking portion and a first connecting portion, the template base is further provided with a second connecting hole, the lower mold frame is provided with a second mounting hole, the first connecting portion penetrates through the second mounting hole and is connected with the template base through the second connecting hole, the first blocking portion can abut against the lower mold frame, and the lower mold frame can be located between the first blocking portion and the template base to move.

According to some embodiments of the present invention, the elastic member module further includes a supporting member, one end of the elastic member abuts against the bottom of the first accommodating groove, and the other end abuts against the lower end of the supporting member, so that the supporting member is movably supported on a surface of the lower mold frame opposite to the second attachment surface.

According to some embodiments of the present invention, the elastic member module further includes a third connecting member, the bottom of the first receiving groove is further provided with a third connecting hole, the third connecting member includes a second connecting portion and a second blocking portion, the supporting member is provided with a second receiving groove, an opening of the second receiving groove faces the lower mold frame, a bottom wall of the second receiving groove is provided with a second mounting hole, a diameter of the second mounting hole is smaller than a diameter of the second receiving groove, the second connecting portion of the third connecting member is inserted into the second mounting hole and connected to the third connecting hole, and the third connecting member is located in the first receiving groove.

According to some embodiments of the utility model, the lower mold frame comprises a plurality of inserts and a base plate, the inserts are fixed on the base plate, and the inserts are spliced to define the molding holes.

According to some embodiments of the utility model, the insert has positioning portions, the positioning portions of adjacent inserts abutting against each other to limit the relative positions of the inserts.

According to some embodiments of the present invention, the lower mold assembly further includes a rolling bar, the forming hole is a rectangular hole, a side wall of the forming hole is provided with a third accommodating groove, the third accommodating groove is parallel to the second attaching surface, the rolling bar is embedded in the third accommodating groove, the mold core is tightly attached to the rolling bar, and a gap is formed between the mold core and the side wall of the forming hole.

According to some embodiments of the utility model, a plurality of third accommodating grooves parallel to each other are arranged on the side wall of the forming hole, and the third accommodating grooves are embedded with the rolling strips.

According to some embodiments of the utility model, the lower mold frame is provided with a glue inlet channel, the glue inlet channel is located on the second attaching surface, the glue inlet channel is communicated with the glue inlet, the mold has two mold cavities, and the two mold cavities are communicated through the glue inlet channel.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

The utility model is further described with reference to the following figures and examples, in which:

FIG. 1 is a schematic partial cross-sectional view of a mold according to an embodiment of the utility model;

FIG. 2 is an enlarged view of area A of FIG. 1;

FIG. 3 is another schematic partial cross-sectional view of a mold according to an embodiment of the utility model;

FIG. 4 is a schematic diagram of a lower module according to an embodiment of the present invention;

FIG. 5 is a schematic view of the insert of FIG. 4;

FIG. 6 is an enlarged view of the area B in FIG. 5;

FIG. 7 is a schematic view of the elastic member module shown in FIG. 1.

Reference numerals:

an upper die 100, a glue inlet 110 and a first binding surface 120;

the mold comprises a lower mold set 200, a lower mold frame 210, a second mounting hole 211, a base plate 212, an insert 213, a positioning part 2131, a third accommodating groove 214, a glue inlet channel 215, a mold core 220, a molding surface 221, a first mold core 222, a mold core base 223, a molding hole 230 and a rolling strip 240;

a mold cavity 300, a mold plate base 400;

the elastic member module 500, the elastic member 510, the third connecting member 520, the supporting member 530, the second sleeve 540, and the spacer 550;

a first connector 600, a second connector 700, a first sleeve 800, and a top plate 900.

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 is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. 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.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Fig. 1 is a schematic partial cross-sectional view of a mold according to an embodiment of the present invention, and fig. 2 is an enlarged schematic view of a region a in fig. 1, and with reference to fig. 1 and fig. 2, the mold according to the embodiment includes: an upper mold 100, a lower mold 200, a mold base 400, and an elastic member mold 500.

The upper mold 100 has a glue inlet 110 and a first bonding surface 120. The lower die set 200 includes a lower die frame 210 and a die core 220, the lower die frame 210 has a molding hole 230 and a second attaching surface (not shown in the figure), the molding hole 230 penetrates through the lower die frame 210, the die core 220 has a molding surface 221, the die core 220 is located in the molding hole 230, the first attaching surface 120 can attach to the second attaching surface, the molding surface 221, the sidewall of the molding hole 230 and the first attaching surface 120 define a die cavity 300, and the die cavity 300 is communicated with the glue inlet 110. The mold base 400 is provided with a first receiving groove (not shown), the lower mold frame 210 is movably connected to the mold base 400, the mold core 220 is fixed to the mold base 400, and an opening of the first receiving groove faces the lower mold frame 210. The elastic member module 500 includes an elastic member 510, one end of the elastic member 510 abuts against the bottom of the first receiving groove, and the other end of the elastic member 510 is used for supporting the lower mold frame 210, so that the lower mold frame 210 is located at a first setting position, the lower mold frame 210 can move between the first setting position and a second setting position under the action of an external force, the upper mold 100 can move along with the lower mold frame 210 to increase or decrease the size of the mold cavity 300, the lower mold frame 210 has a setting gap with the mold base 400 at the first setting position, and abuts against the mold base 400 at the second setting position.

When the lower mold frame 210 is located at the first setting position, there is a set gap with the mold base 400, and at this time, the distance between the first attaching surface 120 on the upper mold 100 and the molding surface 221 on the mold core 220 is the largest, i.e. the volume of the mold cavity 300 is the largest. When the lower mold frame 210 is located at the second setting position, the lower mold frame 210 abuts against the mold base 400, and at this time, the distance between the first attaching surface 120 and the molding surface 221 is the minimum, i.e., the volume of the mold cavity 300 is the minimum. During glue filling, the elastic member 510 is supported on the lower mold frame 210, so that the lower mold frame 210 is located at a first set position, after the melt of the mold cavity 300 is injected to a certain degree, the lower mold frame 210 and the mold base 400 are pressed together by external force (such as pressure provided by an injection molding machine), so as to reduce the size of the mold cavity 300, and the mold cavity 300 is completely filled with the melt, so that products (such as any injection-moldable products as a light guide plate, a mobile phone housing and the like) are thinned, uniform in thickness and flapped, the stress of the products is reduced, and the products are prevented from being warped and deformed.

In addition, in some embodiments, the mold further includes a top plate 900, as shown in fig. 3, fig. 3 is a partial cross-sectional view of another structure according to an embodiment of the present invention, the top plate 900 is connected to a surface of the upper mold 100 opposite to the first abutting surface 120, and the injection molding machine is pressed against the top plate 900 when injecting the melt into the mold cavity 300.

It should be noted that the gap is set to be the maximum gap between the mold base 400 and the lower mold frame 210, that is, the maximum distance that the first attaching surface 120 moves relative to the molding surface 221, and can be adjusted according to the requirement of the product thickness.

In the above embodiment, the mold further includes a first connecting member 600, the mold base 400 is provided with a first mounting hole, the first mounting hole may be a countersunk through hole, a first connecting hole (not shown in the figure) is formed in a surface of the mold core 220 opposite to the molding surface 221, the first connecting member 600 is inserted into the first mounting hole and connected to the mold core 220 through the first connecting hole to fix the mold core 220 to the mold base 400, and the lower mold frame 210 is movably connected to the mold base 400.

In some embodiments, the mold core 220 is provided in a modularized arrangement, and is divided into a first mold core 222 and a mold core base 223, the first mold core 222 and the mold core base 223 are attached to each other in an up-and-down manner, the first mounting hole penetrates through the mold core base 223 and extends to the first mold core 222, and the first mounting hole of the first mold core 222 is a threaded hole. In addition, the size of the mold core base 223 is smaller than that of the first mold core 222, so that the mold core 220 is convenient to disassemble and assemble.

In some embodiments, the mold further includes a second connecting member 700, fig. 3 is a schematic partial cross-sectional view of another embodiment of the mold of the present invention, referring to fig. 3, the second connecting member 700 has a first blocking portion and a first connecting portion, the mold base 400 further has a second connecting hole (not shown), the lower mold frame 210 has a second mounting hole 211, the first connecting portion is inserted into the second mounting hole 211 and connected to the mold base 400 through the second connecting hole, the first blocking portion can be abutted against the lower mold frame 210, and the lower mold frame 210 can move between the first blocking portion and the mold base 400.

Specifically, the second mounting hole 211 may be a countersunk through hole, the first blocking portion of the second connecting member 700 may be located in the countersunk hole, so that the first attaching surface 120 and the second attaching surface may be attached, the first connecting portion is disposed through the second mounting hole 211 and is connected to the second connecting hole through a thread, the length of the first connecting portion located outside the second connecting hole is greater than the thickness from the bottom of the countersunk portion of the second mounting hole 211 to the surface of the lower mold frame 210 near the mold base 400, so that the lower mold frame 210 has a space capable of moving up and down, when the lower mold frame 210 is located at the first set position, the bottom of the countersunk portion of the second mounting hole 211 may be abutted against the first blocking portion, so as to limit the maximum distance between the first attaching surface 120 of the lower mold frame 210 and the molding surface 221 of the mold core 220, that is, i.e., the maximum distance between the first attaching surface 120 of the upper mold 100 and the molding surface 221, so as to limit the maximum volume of the mold cavity 300.

It can be understood that, when the length of the first connecting portion is fixed, the distance between the first blocking portion and the mold base 400 can be controlled by controlling the length of the first connecting portion screwed into the second connecting hole, that is, the distance of the lower mold frame 210 moving up and down, that is, the size of the set gap, can be controlled.

It is understood that in the above embodiment, the lower mold frame 210 directly contacts the second connector 700, and the second connector 700 is generally a standard screw, and it can be known that the surface of the screw is rough, and the lower mold frame 210 is worn due to frequent contact with the second connector 700 during the long-term use of the mold. Based on this, on the basis of the above embodiment, the first sleeve 800 is further sleeved on the second connecting member 700, and the lower mold frame 210 is separated from the second connecting member 700 by the first sleeve 800, so that the first sleeve 800 is damaged and replaceable, and the cost is lower compared with the cost for directly replacing the lower mold frame 210.

Similarly, in some embodiments, the elastic element module 500 further includes a supporting element 530, fig. 7 is a schematic diagram of the elastic element module in fig. 1, and with reference to fig. 1 and fig. 7, one end of the elastic element 510 abuts against the bottom of the first receiving groove, and the other end abuts against the lower end of the supporting element 530, so that the supporting element 530 is supported on a surface of the lower mold frame 210 opposite to the second attachment surface, and the elastic element 510 can be prevented from directly contacting the lower mold frame 210, so as to prevent the lower mold frame 210 from being worn.

In addition, a gasket 550 may be disposed at the bottom of the first receiving groove, and the elastic element 510 abuts against the gasket 550, so as to prevent the elastic element 510 from directly contacting the bottom of the first receiving groove, thereby preventing the template base 400 from being worn.

Referring to fig. 1 and 7, based on the above embodiment, the elastic member module 500 further includes a third connecting member 520, a third connecting hole (not shown) is further formed at the bottom of the first receiving groove, the third connecting member 520 includes a second connecting portion and a second blocking portion, the supporting member 530 is provided with a second receiving groove (not shown), an opening of the second receiving groove faces the lower mold frame 210, a bottom wall of the second receiving groove has a second mounting hole 211, a diameter of the second mounting hole 211 is smaller than a diameter of the second receiving groove, the second connecting portion of the third connecting member 520 penetrates through the second mounting hole 211 and is connected to the third connecting hole, and the third connecting member 520 is located in the first receiving groove.

Specifically, the supporting member 530 and the elastic member 510 are sleeved on the third connecting member 520, and the elastic member 510 and the supporting member 530 do not need to be connected into a whole, so that the deviation of the central axis positions of the supporting member 530 and the elastic member 510 in the using process can be prevented, and the supporting member 530 can be replaced independently after the supporting member 530 is damaged. In addition, the elastic member 510 can be more conveniently mounted in the third receiving groove 214 by the third connecting member 520.

Referring to fig. 1 and 7, in some embodiments, the elastic member module 500 further includes a second sleeve 540, the second sleeve 540 is sleeved on the third connecting member 520, the elastic member 510 is sleeved on the second sleeve 540, and the elastic member 510 is tightly attached to the outer wall of the second sleeve 540. The elastic member 510 is prevented from radially swinging during the expansion and contraction process, thereby ensuring that the elastic member 510 does not contact with the side wall of the first receiving groove.

In some embodiments, lower mold frame 210 includes a plurality of inserts 213 and a base plate 212, fig. 4 is a schematic view of lower mold block 200 according to an embodiment of the present invention, fig. 5 is a schematic view of insert 213 in fig. 4, and fig. 6 is an enlarged schematic view of area B in fig. 5, and in combination with fig. 4 to 6, insert 213 is fixed on base plate 212, and a plurality of inserts 213 are joined to define molding hole 230, so as to facilitate disassembly and cleaning of lower mold block 200.

In some embodiments, inserts 213 have positioning portions 2131, and positioning portions 2131 of adjacent inserts 213 abut against each other to limit the relative positions of the plurality of inserts 213, so as to make molding hole 230 more precise.

Referring to fig. 5 and 6, in some embodiments, the lower mold assembly 200 further includes a rolling bar 240, the molding hole 230 is a rectangular hole, a third receiving groove 214 is disposed on a sidewall of the molding hole 230, the third receiving groove 214 may be a rectangular groove, a circular groove, a triangular groove, or the like, an extending direction of the third receiving groove 214 is parallel to the second attachment surface, the rolling bar 240 is embedded in the third receiving groove 214, the mold core 220 is tightly attached to the rolling bar 240, and a gap is formed between the mold core 220 and the sidewall of the molding hole 230, so as to prevent the mold core 220 and the lower mold frame 210 from being damaged due to mutual friction and facilitate relative movement between the lower mold frame 210 and the mold core 220.

Referring to fig. 5 and 6, in some embodiments, a plurality of third receiving grooves 214 are disposed on the side walls of the forming hole 230, and a rolling bar 240 is embedded in each of the third receiving grooves 214, so that the mold core 220 is more stable during the moving process.

Referring to fig. 6, in some embodiments, the lower mold frame 210 is provided with a glue inlet channel 215, the glue inlet channel 215 is located on the second adhering surface, the glue inlet channel 215 is communicated with the glue inlet 110, the mold has two mold cavities 300, and the two mold cavities 300 are communicated through the glue inlet channel 215.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above 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. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims (10)

1. A mold, comprising:

the upper die is provided with a glue inlet and a first binding surface;

a lower module; the lower die frame is provided with a forming hole and a second attaching surface, the mold core is provided with a forming surface, the mold core is positioned in the forming hole, the first attaching surface can be attached to the second attaching surface, the forming surface, the side wall of the forming hole and the first attaching surface define a mold cavity, and the mold cavity is communicated with the glue inlet;

the mold comprises a template base, a lower mold frame and a mold core, wherein the template base is provided with a first accommodating groove, the lower mold frame is movably connected to the template base, the mold core is fixed on the template base, and an opening of the first accommodating groove faces the lower mold frame;

the elastic piece module comprises an elastic piece, one end of the elastic piece abuts against the bottom of the first accommodating groove, the other end of the elastic piece is used for supporting the lower die frame, so that the lower die frame is located at a first set position, the lower die frame can move between the first set position and a second set position under the action of external force, and the upper die can move along with the lower die frame to increase or decrease the size of the die cavity;

the lower die frame can have a set gap with the die plate base at the first set position, and can abut against the die plate base at the second set position.

2. The mold according to claim 1, further comprising a first connecting member, wherein the mold base is provided with a first mounting hole, a first connecting hole is formed in a surface of the mold core opposite to the molding surface, the first connecting member is inserted into the first mounting hole and connected to the mold core through the first connecting hole to fix the mold core to the mold base, the lower mold frame is movably connected to the mold base, and the lower mold frame can abut against the mold base at the second setting position.

3. The mold according to claim 1, further comprising a second connecting member, wherein the second connecting member has a first blocking portion and a first connecting portion, the mold base is further provided with a second connecting hole, the lower mold frame is provided with a second mounting hole, the first connecting portion is inserted into the second mounting hole and connected with the mold base through the second connecting hole, the first blocking portion can abut against the lower mold frame, and the lower mold frame can be located between the first blocking portion and the mold base to move.

4. The mold of claim 1, wherein the elastic member module further comprises a supporting member, one end of the elastic member abuts against the bottom of the first receiving groove, and the other end abuts against the lower end of the supporting member, so that the supporting member is movably supported on a surface of the lower mold frame opposite to the second abutting surface.

5. The mold according to claim 4, wherein the elastic member module further comprises a third connecting member, a third connecting hole is further formed in the bottom of the first receiving groove, the third connecting member comprises a second connecting portion and a second blocking portion, the supporting member is provided with a second receiving groove, an opening of the second receiving groove faces the lower mold frame, a second mounting hole is formed in the bottom wall of the second receiving groove, the diameter of the second mounting hole is smaller than that of the second receiving groove, the second connecting portion of the third connecting member penetrates through the second mounting hole and is connected to the third connecting hole, and the third connecting member is located in the first receiving groove.

6. The mold of claim 1, wherein the lower mold frame comprises a plurality of inserts and a base plate, the inserts being secured to the base plate, the plurality of inserts being joined to define the molding aperture.

7. The mold according to claim 6, wherein the inserts have positioning portions that abut against each other to limit the relative positions of the inserts.

8. The mold according to claim 1, wherein the lower mold set further comprises a rolling bar, the forming hole is a rectangular hole, a third receiving groove is formed in a sidewall of the forming hole, an extending direction of the third receiving groove is parallel to the second abutting surface, the rolling bar is embedded in the third receiving groove, the mold core is tightly attached to the rolling bar, and a gap is formed between the mold core and the sidewall of the forming hole.

9. The mold according to claim 8, wherein a plurality of third receiving grooves are provided on the side wall of the molding hole, and the third receiving grooves are embedded with the rolling bars.

10. The mold according to any one of claims 1 to 9, wherein the lower mold frame is provided with a glue inlet channel, the glue inlet channel is located on the second attachment surface, the glue inlet channel is communicated with the glue inlet, the mold has two mold cavities, and the two mold cavities are communicated through the glue inlet channel.

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