CN117067503A - Glass edge-covering assembly, injection molding method thereof and vehicle - Google Patents

Abstract

The invention discloses a glass edging assembly, an injection molding method thereof and a vehicle, wherein the injection molding method comprises the following steps: positioning the edge part of the glass and the insert in an edge covering mold, supporting the insert on the lower molded surface of the edge covering mold through a lower supporting structure, and supporting the insert on the upper molded surface of the edge covering mold through an upper supporting structure, wherein the first edge part of the insert is positioned above a pouring gate of the edge covering mold; injecting the edge covering material into the first molding cavity from the gate, wherein the edge covering material can be injected into the second molding cavity through a material flowing channel on the upper supporting structure; and demolding after the binding material is solidified and molded, so as to obtain the glass binding assembly. According to the invention, the insert is formed into a lever structure in the edge covering die, the downward reaction force applied to the second edge part can be accurately controlled based on the lever principle to meet the requirement, the downward reaction force can be utilized to counteract the deformation generated by the temperature change of the second edge part and the edge covering of the insert after demoulding, the second edge part and the edge covering of the insert are prevented from tilting, and the loading requirement can be met.

Description

Glass edge-covering assembly, injection molding method thereof and vehicle

Technical Field

The invention relates to the technical field of glass edge covering, in particular to a glass edge covering assembly and an injection molding method thereof.

The invention relates to the technical field of vehicles, in particular to a vehicle.

Background

In the prior art, the insert and the glass are bonded and fixed on the glass in an integral injection molding binding mode, and the insert is embedded into the binding to improve the binding rigidity. However, after the edge-covering injection molding, the edge-covering shrinkage and the stress release of the insert are affected, so that the insert and the edge-covering are tilted, and the more the part far away from the glass is tilted, the lower the overlapping effect of the insert and the sheet metal of the vehicle body is caused when the glass edge-covering assembly is assembled behind the vehicle body. To solve this problem, in the prior art, the insert is pre-bent downward, but because it is difficult to control the pre-bending amount accurately, that is, it cannot be ensured that the pre-bending amount is offset from the actual warp-up amount, the above problem cannot be solved well.

Disclosure of Invention

The invention aims to provide a glass edge-covering assembly, an injection molding method thereof and a vehicle, so as to solve the technical problem that an insert and an edge-covering of the glass edge-covering assembly tilt and cannot meet the loading requirement.

The above object of the present invention can be achieved by the following technical solutions:

the invention provides an injection molding method of a glass edge covering assembly, which comprises the following steps: positioning and placing the edge part of the glass and the insert in an edge covering mold, supporting the insert on a lower molded surface of the edge covering mold through a lower supporting structure, supporting the insert on an upper molded surface of the edge covering mold through an upper supporting structure, wherein a first edge part of the insert is positioned above a pouring gate of the edge covering mold, a gap between the first edge part and the edge part of the glass and the lower molded surface of the edge covering mold forms a first molding cavity, the lower surface of a second edge part of the insert is attached to the lower molded surface of the edge covering mold, and a gap between the upper surface of the second edge part and the upper molded surface of the edge covering mold forms a second molding cavity; injecting a binding material from the gate into the first molding cavity, and the binding material can be injected into the second molding cavity through a flow channel on the upper support structure; and demolding after the binding material is solidified and molded, so as to obtain the glass binding assembly.

In an embodiment of the invention, a distance between a lower surface of the first side portion and the lower profile is greater than a distance between an upper surface of the first side portion and the side portion of the glass.

In an embodiment of the present invention, a distance B between the upper support structure and the gate and a distance C between the upper support structure and an edge of the second side portion have the relationship: c is more than or equal to 2B.

In an embodiment of the present invention, a distance a between an edge of the first edge and the gate and a distance B between the upper support structure and the gate have the relationship: b is more than or equal to 3A.

In an embodiment of the present invention, a distance a between an edge of the first side portion and the gate is 1mm to 3mm.

In the embodiment of the invention, the upper surface of the first side part is provided with an upper limit structure; the edge part of the glass and the insert are positioned and placed in the edge covering die, and the glass edge covering die further comprises: the upper limit structure is arranged below the edge of the glass, a space is reserved between the upper limit structure and the edge of the glass, and the upper limit structure and the pouring gate of the edge covering die are arranged oppositely.

The invention also provides a glass edging assembly, comprising: glass; the insert is provided with a first edge and a second edge, the first edge is positioned below the edge of the glass, a lower supporting structure is arranged on the lower surface of the insert in a protruding mode, an upper supporting structure is arranged on the upper surface of the insert in a protruding mode, a material flowing channel is arranged on the upper supporting structure, and the upper supporting structure and the lower supporting structure are positioned between the first edge and the second edge; the glass comprises a binding, wherein the binding is fixed on the edge of the glass, the first edge is fixed in the binding, the second edge is fixed on the lower surface of the binding, the upper supporting structure is exposed on the upper surface of the binding, and the lower supporting structure is exposed on the lower surface of the binding.

In an embodiment of the present invention, the lower support structure includes a lower support protrusion extending along a length direction of the insert.

In an embodiment of the present invention, the upper support structure includes a plurality of upper support protrusions, the flow channel includes a plurality of flow grooves, the plurality of upper support protrusions and the plurality of flow grooves are arranged along a length direction of the insert, and the plurality of flow grooves are located between the plurality of upper support protrusions.

In an embodiment of the invention, an upper limit structure is arranged on the upper surface of the first side part, the upper limit structure is positioned below the side part of the glass, and a space is reserved between the upper limit structure and the side part of the glass.

In an embodiment of the invention, the lower surface of the wrapping edge is provided with a gate mark, and the upper limit structure is arranged opposite to the gate mark.

In an embodiment of the invention, the insert is a plastic piece.

The invention also provides a vehicle comprising the glass edge-covering assembly.

The invention has the characteristics and advantages that:

according to the injection molding method of the glass edge covering assembly, the upper supporting structure is utilized to form the upper supporting point, the lower supporting structure is utilized to form the lower supporting point, so that the whole insert forms a lever structure in the edge covering mold, and further, after the edge covering material is injected into a gap between the first edge and the lower molded surface of the edge covering mold, a deformation space is provided by utilizing the gap between the first edge and the edge of glass, so that the first edge is deformed upwards under the action of the pressure and the temperature of the gate, namely, towards one side close to the glass, therefore, the second edge can be subjected to downward reaction force, the size of the downward reaction force applied to the second edge can be accurately controlled on the basis of the lever principle to meet the requirement, and further, after demolding, the deformation generated by the temperature change of the second edge of the insert and the edge covering can be counteracted by the downward reaction force, so that the second edge of the insert and the edge covering of the edge covering are prevented from rising, and the requirement of a vehicle can be met.

According to the glass edge covering assembly and the vehicle, the upper supporting structure and the lower supporting structure are arranged on the insert, so that the insert can be abutted against the lower molded surface of the edge covering mold to form an upper supporting point by the lower supporting structure after being placed in the edge covering mold, and the upper supporting structure is abutted against the upper molded surface of the edge covering mold to form a lower supporting point, and further the second edge of the insert and edge covering warping can be avoided by the injection molding method.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of an insert in an edge covering mold according to the present invention.

FIG. 2 is a schematic view of the flow path of the binding material in the binding mold according to the present invention.

FIG. 3 is a schematic view of a glass edge covering assembly according to an embodiment of the invention.

Fig. 4 is a schematic perspective view of an insert according to an embodiment of the invention.

FIG. 5 is a schematic view of a glass edge covering assembly according to another embodiment of the present invention.

In the figure:

1. glass; 11. a side portion of the glass; 2. an insert; 21. a first edge; 22. a second edge portion; 23. an upper limit structure; 3. wrapping edges; 4. an upper support structure; 41. an upper support protrusion; 5. a lower support structure; 6. a flow channel; 7. a first molding cavity; 8. a second molding cavity; 9. and (5) pouring gate.

Detailed Description

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

Embodiment one

As shown in fig. 1 and 2, the present invention provides an injection molding method of a glass edging assembly, comprising the steps of: positioning the edge 11 of the glass 1 and the insert 2 in an edge covering mold, supporting the insert 2 on a lower molding surface of the edge covering mold through a lower supporting structure 5, supporting the insert 2 on an upper molding surface of the edge covering mold through an upper supporting structure 4, wherein a first edge 21 of the insert 2 is positioned above a gate 9 of the edge covering mold, a gap between the first edge 21 and the edge 11 of the glass 1 and the lower molding surface of the edge covering mold forms a first molding cavity 7, the lower surface of a second edge 22 of the insert 2 is attached to the lower molding surface of the edge covering mold, and a gap between the upper surface of the second edge 22 and the upper molding surface of the edge covering mold forms a second molding cavity 8; injecting the edging material from the gate 9 into the first forming cavity 7, and injecting the edging material into the second forming cavity 8 through the flow channel 6 on the upper support structure 4; and demolding after the binding material is solidified and molded, so as to obtain the glass binding assembly.

As shown in fig. 3, the binding material is cured to form the binding 3, the binding 3 is adhered and fixed to the edge 11 of the glass 1, the first edge 21 is adhered and fixed to the inner side of the binding 3, and the second edge 22 is adhered and fixed to the lower surface of the binding 3, that is, the first edge 21 is covered by the binding 3 and is not exposed to the surface of the binding 3, and the lower surface of the second edge 22 is exposed to the lower surface of the binding 3. Specifically, the portion of the molding 3 in the first molding cavity 7 is covered on the first edge 21 and is bonded to the lower surface and the end surface of the edge 11 of the glass 1. The portion of the molding 3 in the second molding cavity 8 is bonded to the upper surface and the end surface of the second side portion 22.

According to the injection molding method of the glass edge covering assembly, the upper supporting point is formed by using the upper supporting structure 4, the lower supporting structure 5 forms the lower supporting point, so that the whole insert 2 forms a lever structure in the edge covering mold, further, after the first edge 21 of the insert 2 is placed above the pouring gate 9, when the edge covering material is injected into a gap between the first edge 21 and the lower molded surface of the edge covering mold, a deformation space is provided by using the gap between the first edge 21 and the edge 11 of the glass 1, so that the first edge 21 is deformed upwards under the action of the pressure and the temperature of the pouring gate 9, namely, is deformed towards the side close to the glass 1, and therefore, the second edge 22 can be subjected to downward reaction force, the size of the downward reaction force applied to the second edge 22 can be accurately controlled on the basis of the lever principle to meet the requirement, and further, after demolding, the deformation caused by temperature change of the second edge 22 of the insert 2 and the edge covering 3 can be counteracted, and the warping of the second edge 22 of the edge covering 3 of the insert 2 can be further met.

Specifically, the edge covering die comprises an upper die and a lower die which are matched and used, wherein the inner surface of the upper die is an upper molded surface, and the inner surface of the lower die is an upper molded surface. The glass edge-covering assembly can be applied to a vehicle, the glass 1 is a window glass 1, and the second edge 22 of the insert 2 is overlapped with a sheet metal part around the window glass. The edging material may be PVC or TPE. The insert 2 may be integrally injection molded as a plastic part, but may also be an insert made of other materials.

As shown in fig. 1 and 3, in some embodiments of the present invention, the lower support structure 5 is protruded on the lower surface of the insert 2, and the upper support structure 4 is protruded on the upper surface of the insert 2. By arranging the upper support structure 4 and the lower support structure 5 on the insert 2, the insert 2 can be placed in the edge covering mold to form an upper support point on the lower molded surface of the edge covering mold by using the lower support structure 5, and the upper support structure 4 is abutted on the upper molded surface of the edge covering mold to form a lower support point, so that the insert 2 forms a lever structure in the edge covering mold. Therefore, after the binding material is cured and formed, the upper support structure 4 is exposed on the upper surface of the formed binding 3, and the lower support structure 5 is exposed on the lower surface of the binding 3.

Specifically, the upper support structure 4 and the lower support structure 5 are integrally injection molded on the insert 2. After the binding material is solidified and formed, the upper surface of the upper supporting structure 4 is flush with the upper surface of the binding 3, and the lower surface of the lower supporting structure 5 is flush with the lower surface of the binding 3. The lower support structure 5 comprises a lower support protrusion extending in the length direction of the insert 2. The lower supporting convex part is in a convex strip structure. As shown in connection with fig. 4, the upper support structure 4 includes a plurality of upper support protrusions 41, and the flow channel 6 includes a plurality of flow grooves, the plurality of upper support protrusions 41 and the plurality of flow grooves being arranged along the length direction of the insert 2, the plurality of flow grooves being located between the plurality of upper support protrusions 41.

In other embodiments of the invention, as shown in fig. 1, the upper support structure 4 and the lower support structure 5 may not be provided on the insert 2. The upper support structure 4 may be provided on the upper profile of the hemming die. The lower support structure 5 may be provided on the lower profile of the hemming die. Specifically, the insert 2 is substantially plate-shaped, and the specific shape may be the same as that of the prior art, and will not be described herein. The upper supporting structure 4 is abutted against the upper surface of the insert 2 to form an upper supporting point, and the lower supporting structure 5 is abutted against the lower surface of the insert 2 to form a lower supporting point, so that the insert 2 forms a lever structure in the edge covering die.

In connection with the flow path S of the covering material shown in fig. 2, in the embodiment of the invention, the distance H between the lower surface of the first edge 21 and the lower profile is larger than the distance H between the upper surface of the first edge 21 and the edge 11 of the glass 1. According to the die flow analysis of the liquid flowing first from the large channel to the small channel, the edge covering material can flow into the gap between the first edge 21 and the lower molded surface, so that the whole first edge 21 can be deformed upwards under the pressure and temperature of the gate 9, and then flows into the gap between the first edge 21 and the edge 11 of the glass 1, thereby avoiding the first edge 21 from being deformed downwards due to the pressure of the edge covering material flowing first into the gap between the first edge 21 and the edge 11 of the glass 1.

Specifically, the distance H between the lower surface of the first side portion 21 and the lower profile is larger than the distance H between the upper surface of the first side portion 21 and the side portion 11 of the glass 1, and has the relationship: h is more than or equal to 1.2H. After entering from the gate 9, the edging material flows into the gap between the first edge 21 and the lower profile toward the side close to the lower support structure 5, then flows into the gap between the first edge 21 and the edge of the glass 1 from the side far from the lower support structure 5, fills the first molding cavity 7, and then flows into the second molding cavity 8 through the flow channel 6.

As shown in connection with fig. 1, the flow direction of the taping material is affected by the size of the space a between the edge of the first edge portion 21 and the gate 9 of the taping die. In the embodiment of the present invention, the distance a between the edge of the first edge portion 21 and the gate 9 of the taping die is 1mm to 3mm, so that it is ensured that the taping material does not flow to the upper side of the first edge portion 21 toward the side away from the lower support structure 5 after injection from the gate 9.

As shown in fig. 1, the position of the gate 9 corresponds to the position where the first edge 21 is most acted by the pressure and the temperature of the gate 9, that is, the maximum stress point of the first edge 21, and it is known from the lever principle that the interval C between the edges of the upper support structure 4 and the second edge 22 and the interval B between the gate 9 and the upper support structure 4 affect the magnitude of the downward reaction force applied to the second edge 22. When the distance B between the upper support structure 4 and the gate 9 and the pressure of the gate 9 are unchanged, the smaller the distance C between the upper support structure 4 and the edge of the second side portion 22 is, the smaller the downward reaction force received by the second side portion 22 is, and the larger the distance C between the upper support structure 4 and the edge of the second side portion 22 is, the larger the downward reaction force received by the second side portion 22 is.

In order that the downward reaction force applied to the second edge 22 can be sufficiently offset from the upward tilting force applied to the second edge 22 after demolding, in the embodiment of the present invention, the distance B between the upper support structure 4 and the gate 9 and the distance C between the upper support structure 4 and the edge of the second edge 22 have the following relationships: c is more than or equal to 2B.

As shown in fig. 1, since the first side portion 21 is deformed upward by the pressure and temperature of the gate 9, it is also deformed upward by the pressure and temperature of the edging material injected first into the gap between the first side portion 21 and the lower profile. The distance a between the edge of the first edge 21 and the gate 9 and the distance B between the upper support structure 4 and the gate 9 have the relationship: b is more than or equal to 3A. So that there is sufficient distance between the gate 9 and the upper support structure 4 to effectively exert leverage during injection molding.

As shown in fig. 5, in the embodiment of the present invention, the upper surface of the first edge 21 is convexly provided with the upper limit structure 23, the upper limit structure 23 is located below the edge 11 of the glass 1, and a space is provided between the upper limit structure 23 and the edge 11 of the glass 1. Through setting up limit structure 23, after insert 2 is arranged in the mould of borduring, utilize the clearance that forms between limit structure 23 and the glass 1 limit portion to form the space that first limit portion 21 warp upwards, when first limit portion 21 warp to the required degree upwards, limit the limit structure 23 can with the limit portion 11 butt of glass 1 and the continuous upward deformation of first limit portion 21 to avoid the downward reaction force that the second limit portion received too big. Since the stress at the position of the first edge portion 21 relative to the gate 9 is the greatest, further, the upper limit structure 23 is disposed opposite to the gate 9 of the hemming die, so that the upper limit structure 23 is more advantageous in controlling the deformation range of the first edge portion 21. Specifically, the upper limiting structure 23 may include a plurality of upper limiting protruding portions, and a plurality of flow grooves are formed between the plurality of upper limiting protruding portions. The height of the protrusions of the upper limit structure 23 is lower than the height of the protrusions of the upper support structure 4.

Second embodiment

As shown in fig. 3, the present invention provides a glass hemming assembly comprising: a glass 1; an insert 2 having a first edge 21 and a second edge 22, the first edge 21 being located below the edge 11 of the glass 1; the binding 3 is fixed to the edge 11 of the glass 1, the first edge 21 is fixed in the binding 3, and the second edge 22 is fixed to the lower surface of the binding 3. The specific structure, the working principle and the beneficial effects of the glass edge-covering assembly of the present embodiment are the same as those of the glass edge-covering assembly of the first embodiment, and are not described herein again.

As shown in fig. 3, in the embodiment of the present invention, the lower surface of the insert 2 is convexly provided with a lower support structure 5, the upper surface of the insert 2 is convexly provided with an upper support structure 4, the upper support structure 4 is provided with a flow channel 6, and the upper support structure 4 and the lower support structure 5 are located between the first edge 21 and the second edge 22. In particular, the protruding height of the lower support structure 5 is greater than the spacing between the upper surface of the first edge 21 and the edge 11 of the glass 1. The insert 2 is a plastic piece. The lower support structure 5 and the upper support structure 4 are integrally injection molded on the insert 2.

In the embodiment of the present invention, the lower support structure 5 includes a lower support protrusion extending along the length direction of the insert 2.

As shown in fig. 4, in the embodiment of the present invention, the upper support structure 4 includes a plurality of upper support protrusions 41, and the flow channel 6 includes a plurality of flow grooves, the plurality of upper support protrusions 41 and the plurality of flow grooves being arranged along the length direction of the insert 2, the plurality of flow grooves being located between the plurality of upper support protrusions 41.

As shown in fig. 5, in the embodiment of the present invention, the upper surface of the first edge 21 is provided with an upper limit structure 23, the upper limit structure 23 is located below the edge 11 of the glass 1, and a space is provided between the upper limit structure 23 and the edge 11 of the glass 1. Specifically, after the insert 2 is placed in the edging mold, the first edge 21 is disposed above the gate 9 of the edging mold at intervals, so that residual edging material, that is, gate marks, exists at the position of the lower surface of the shaped edging 3 corresponding to the gate 9. The upper limit structure 23 is disposed opposite to the gate trace, that is, after the insert 2 is placed in the edging mold, the upper limit structure 23 is disposed opposite to the gate 9 of the edging mold, so that the upper limit structure 23 can effectively control the deformation range of the first edge 21 at the position of maximum stress of the first edge 21.

Embodiment III

The invention also provides a vehicle comprising the glass edging assembly. The specific structure, the working principle and the beneficial effects of the glass edge-covering assembly of the present embodiment are the same as those of the glass edge-covering assembly of the first embodiment, and are not described herein again.

The foregoing is merely a few embodiments of the present invention and those skilled in the art may make various modifications or alterations to the embodiments of the present invention in light of the disclosure herein without departing from the spirit and scope of the invention.

Claims (13)

1. An injection molding method of a glass edging assembly is characterized by comprising the following steps:

positioning and placing the edge part of the glass and the insert in an edge covering mold, supporting the insert on a lower molded surface of the edge covering mold through a lower supporting structure, supporting the insert on an upper molded surface of the edge covering mold through an upper supporting structure, wherein a first edge part of the insert is positioned above a pouring gate of the edge covering mold, a gap between the first edge part and the edge part of the glass and the lower molded surface of the edge covering mold forms a first molding cavity, the lower surface of a second edge part of the insert is attached to the lower molded surface of the edge covering mold, and a gap between the upper surface of the second edge part and the upper molded surface of the edge covering mold forms a second molding cavity;

injecting a binding material from the gate into the first molding cavity, and the binding material can be injected into the second molding cavity through a flow channel on the upper support structure;

and demolding after the binding material is solidified and molded, so as to obtain the glass binding assembly.

2. The injection molding method according to claim 1, wherein,

the spacing between the lower surface of the first edge and the lower profile is greater than the spacing between the upper surface of the first edge and the edge of the glass.

3. The injection molding method according to claim 1, wherein,

a spacing B between the upper support structure and the gate and a spacing C between the upper support structure and an edge of the second side portion have the relationship: c is more than or equal to 2B.

4. The injection molding method according to claim 1, wherein,

a distance a between the edge of the first edge and the gate and a distance B between the upper support structure and the gate have the relationship: b is more than or equal to 3A.

5. The injection molding method according to claim 1, wherein,

the interval A between the edge of the first side part and the pouring gate is 1 mm-3 mm.

6. The injection molding method according to claim 1, wherein an upper surface of the first side portion is provided with an upper limit structure; the edge part of the glass and the insert are positioned and placed in the edge covering die, and the glass edge covering die further comprises: the upper limit structure is arranged below the edge of the glass, a space is reserved between the upper limit structure and the edge of the glass, and the upper limit structure and the pouring gate of the edge covering die are arranged oppositely.

7. A glass hemming assembly comprising:

glass;

the insert is provided with a first edge and a second edge, the first edge is positioned below the edge of the glass, a lower supporting structure is arranged on the lower surface of the insert in a protruding mode, an upper supporting structure is arranged on the upper surface of the insert in a protruding mode, a material flowing channel is arranged on the upper supporting structure, and the upper supporting structure and the lower supporting structure are positioned between the first edge and the second edge;

the glass comprises a binding, wherein the binding is fixed on the edge of the glass, the first edge is fixed in the binding, the second edge is fixed on the lower surface of the binding, the upper supporting structure is exposed on the upper surface of the binding, and the lower supporting structure is exposed on the lower surface of the binding.

8. The glass hemming assembly of claim 7 wherein,

the lower support structure comprises a lower support convex part, and the lower support convex part extends along the length direction of the insert.

9. The glass hemming assembly of claim 7 wherein,

the upper support structure comprises a plurality of upper support convex parts, the material flowing channel comprises a plurality of flowing grooves, the upper support convex parts and the flowing grooves are distributed along the length direction of the insert, and the flowing grooves are positioned among the upper support convex parts.

10. The glass hemming assembly of claim 7 wherein,

the upper surface of first limit portion is equipped with limit structure, limit structure is located go up the below of glass limit portion, just limit structure with have the interval between the glass limit portion.

11. The glass hemming assembly of claim 10 wherein,

the lower surface of borduring has the runner vestige, go up limit structure with the runner vestige sets up relatively.

12. The glass hemming assembly of claim 7 wherein,

the insert is a plastic piece.

13. A vehicle comprising a glass hemming assembly according to any of claims 7 to 12.