CN111483113A - Die for forming fixed part shell of flip equipment - Google Patents

Abstract

The embodiment of the application discloses a die for forming a fixed part shell of flip equipment, which comprises a rear die core; the front mold core and the rear mold core form a mold cavity of the fixed part shell; the first end of the front die lifter comprises a first forming part and a second forming part, and the first forming part is used for forming the inner surface of the locking ring; the second forming part is used for being combined with the front mold core to form the inner surface of the accommodating cavity; the inner surface of the accommodating cavity comprises a first section matched with the connecting part, and the first section and the upper surface of the fixed part shell are arranged at intervals; the boundary line of the second forming part and the front die core on the inner surface of the accommodating cavity is a first boundary line, and the first boundary line is positioned in the first section. The parting line can be hidden when the mold is used by setting the second forming part and the front mold core to be positioned at the first section on the boundary of the inner surface of the accommodating cavity, so that the user experience is improved, and the production cost is reduced.

Description

Die for forming fixed part shell of flip equipment

Technical Field

The application relates to the technical field of molds, in particular to a mold for molding a fixed part shell of a flip device.

Background

With the rapid development of manufacturing industry, injection molding technology has been widely applied to industries such as mobile terminals, household appliances, automobiles, and the like. In the existing injection molding process, molten plastic is injected into a mold cavity, a workpiece with a specific shape can be formed after cooling and solidification, and then the workpiece is ejected by an ejection device. However, the mold in the related art is not reasonable in structural design, and the molded workpiece is exposed outside when in use, which affects user experience. Meanwhile, in order to solve the problem that the parting line is exposed to the outside, other operations may be also taken to remove the parting line, increasing the manufacturing cost.

Disclosure of Invention

The embodiment of the application provides a mould for forming a fixed part shell of a flip device, which can hide a parting line when in use so as to improve user experience and reduce production cost. The technical scheme is as follows;

the embodiment of the application provides a die for forming a fixed part shell of flip equipment, the flip equipment further comprises a turnover part shell, the turnover part shell comprises a connecting part and a rotating shaft arranged on the connecting part, and the central axis of the connecting part is collinear with the central axis of the rotating shaft; the fixed part shell comprises an accommodating cavity for accommodating the connecting part and a lock ring rotationally connected with the rotating shaft; the mold comprises:

a rear mold core;

the front mold core and the rear mold core form a mold cavity of the fixed part shell; and

the first end of the front die lifter comprises a first forming part and a second forming part, and the first forming part is used for forming the inner surface of the locking ring; the second forming part is used for being combined with the front mold core to form the inner surface of the accommodating cavity;

the inner surface of the accommodating cavity comprises a first section matched with the connecting part, and the first section and the upper surface of the fixed part shell are arranged at intervals; the boundary line of the second forming part and the front die core on the inner surface of the accommodating cavity is a first boundary line, and the first boundary line is positioned in the first section.

According to some embodiments, the inner surface of the accommodating cavity further includes a second section for connecting the first section with the upper surface, the front core includes a first molding surface for molding the second section, a central axis of the first molding portion is a first axis, a section of the first molding surface taken through a plane perpendicular to the first axis is a first section, all the first sections of the first molding surface are circular arcs, and radii of all the first sections are equal.

According to some embodiments, all of the first cross-sections are the same shape.

According to some embodiments, the front core further comprises a second molding surface for molding the upper surface, and a minimum distance from the first boundary line to the second molding surface is 0.9mm or more.

According to some embodiments, the front mold core is provided with a first inclined hole, a first end of the first inclined hole is communicated with the mold cavity, and a second end of the first inclined hole extends to the outer wall of the front mold core along a direction away from the rear mold core; the second end of the front mould inclined top passes through the first inclined hole and is positioned on one side of the front mould core far away from the rear mould core;

the front mold core is configured to push the front mold lifter to move along a first direction when the mold is opened so as to enable the first forming part to move out of the locking ring; the central axis of the first forming portion is a first axis, the first direction is parallel to the first axis, and the central axis of the first forming portion is the direction from one end of the first forming portion far away from the second forming portion to one end of the first forming portion close to the second forming portion.

According to some embodiments, further comprising:

the mounting part is positioned on one side of the front die core, which is far away from the rear die core; and

the first end of the buckling piece is connected with the rear die core, and the second end of the buckling piece is connected with the mounting piece;

the second end of the front mould inclined top passes through the first inclined hole and is connected to the mounting piece; when the front die core is configured to open the die, the front die is pushed to obliquely push the mounting piece to move along the first direction.

According to some embodiments, the mount comprises:

an ejector plate provided with a guide groove extending in parallel to a first direction;

the second end of the front mould inclined top is clamped in the guide groove and can move in the guide groove along the first direction.

According to some embodiments, the fastener comprises:

the first end of the buckle is connected with the rear die core; and

the second end of buckle is located to the first pot head of snap ring, the second end of snap ring connects in the installed part.

According to some embodiments, the number of the front mold lifter and the number of the first inclined holes are two, and the distance between the two first inclined holes is gradually increased from one side of the front mold core close to the rear mold core to one side of the front mold core far away from the rear mold core; the second end of each front mould inclined top passes through one first inclined hole and then is connected to the mounting piece, and the stroke directions of the two front mould inclined tops on the mounting piece are opposite.

According to some embodiments, further comprising:

and the resetting device is used for restoring the front mold lifter from the mold opening position to the mold closing position.

The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise:

through setting the boundary of the inner surface of the accommodating cavity of the second forming part and the front mold core into the first section, the first section is matched with the connecting part, so that after the shell of the turnover part is connected with the shell of the fixed part, the connecting part can shield the first section, and therefore the parting line corresponding to the first boundary of the shell of the fixed part can be prevented from being seen by a user, and the appearance surface of the flip equipment is smooth and flat when the flip equipment is used. And meanwhile, the production cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of a partial structure of a flip cover device;

fig. 2 is a schematic structural view of a stationary portion housing of a flip device;

fig. 3 is an exploded view of a mold for molding a stationary housing of a flip device according to an embodiment of the present application;

FIG. 4 is a schematic partial structural view of a mold provided in an embodiment of the present application;

FIG. 5 is a top view of the structure of FIG. 4;

FIG. 6 is a schematic cross-sectional view taken along the line A-A in FIG. 5;

FIG. 7 is an enlarged schematic view of the structure of FIG. 6 at D;

FIG. 8 is a schematic cross-sectional view taken along line B-B of FIG. 5;

FIG. 9 is a schematic cross-sectional view taken along the line C-C in FIG. 5;

FIG. 10 is a cross-sectional view of the structure of FIG. 4;

FIG. 11 is an enlarged schematic view of the structure of FIG. 10 at E;

FIG. 12 is an enlarged schematic view of the structure of FIG. 11 at F;

FIG. 13 is a schematic view of the structure of FIG. 4 with the front mold insert removed;

FIG. 14 is an enlarged schematic view of the structure at G in FIG. 13;

FIG. 15 is another schematic cross-sectional view taken in the direction C-C of FIG. 5;

FIG. 16 is a schematic view of FIG. 6 in an open position;

fig. 17 is a schematic view of another state of fig. 6 when the mold is opened.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims.

Referring to fig. 1 to 3, the present embodiment provides a mold 100 for molding a fixed part housing 210 of a flip device 200. The flip device 200 may be any device that is capable of being flipped. For example, the flip device 200 may be a mobile phone, a computer, etc. The flip cover device 200 includes two parts that are turned over, and for convenience of description, one of the two parts is defined as a turning part, and the other part is defined as a fixing part. The housing of the turning part is referred to as a turning part housing 220, and the housing of the fixing part is referred to as a fixing part housing 210.

The flip device 200 further includes a flip housing 220, the flip housing 220 includes a connecting portion 221 and a rotating shaft disposed on the connecting portion 221, and the fixing portion housing 210 includes a receiving cavity 211 for receiving the connecting portion 221 and a locking ring 212 rotatably connected to the rotating shaft. After the connecting portion 221 is located in the receiving cavity 211 and the rotating shaft is located in the locking ring 212, the flip portion housing 220 can rotate smoothly relative to the fixed portion housing 210. The central axis of the connecting portion 221 should be collinear with the central axis of the rotation shaft.

Referring to fig. 3 and 4, the mold 100 includes a front core 110, a rear core 120, and a front lifter 130. The front core 110 and the rear core 120 form a cavity Q of the stationary housing 210, as shown in fig. 13. Referring to fig. 6 and 13, a first end of the front mold lifter 130 is positioned within the mold cavity Q. Referring to fig. 7, the first end of the front mold lifter 130 includes a first molding portion 131 and a second molding portion 132, and the first molding portion 131 is used to mold the inner surface of the lock ring 212. The second molding portion 132 is used to combine with the front core 110 to mold the inner surface of the receiving cavity 211.

Since the second molding part 132 and the front core 110 are combined to form the inner surface of the receiving cavity 211, and the second molding part 132 and the front core 110 have a boundary, a mold parting mark corresponding to the boundary exists on the inner surface of the receiving cavity 211 formed by the mold 100. In order to prevent the mold parting trace from affecting the external surface of the flip device 200, so that the external surface of the flip device 200 is not smooth enough and affects the use of the user, the embodiment of the present application improves the structures of the second molding part 132 and the front mold core 110, so that the mold parting trace on the inner surface of the molded accommodating cavity 211 cannot be seen by the user. Specifically, referring to fig. 2 and 11, the inner surface of the receiving cavity 211 includes a first section 2111 fitted to the connection portion 221, the first section 2111 being spaced apart from the upper surface 213 of the fixing portion housing 210. Referring to fig. 12, a boundary line between the second forming portion 132 and the front core 110 at the inner surface of the receiving cavity 211 is a first boundary line P1, and the first boundary line P1 is located at the first section 2111.

Since the first section 2111 is matched with the connecting portion 221, after the flip housing 220 is connected with the fixed housing 210, the connecting portion 221 will block the first section 2111, and the first dividing line P1 is set to be located at the first section 2111, so that the user can be prevented from seeing the parting line of the fixed housing 210 corresponding to the first dividing line P1, thereby ensuring smooth and flat appearance of the flip device 200 during use.

The central axis of the rotating shaft is a second axis, and a section of the connecting portion 221 through a plane perpendicular to the second axis is a second cross section, so that the rotating shaft can smoothly rotate in the locking ring 212, all the second cross sections of the connecting portion 221 are circular, and the circle centers of all the second cross sections are located on the second axis. A plane of the first section 2111 taken through a plane perpendicular to the second axis is a third section, and the adaptation of the first section 2111 to the connection portion 221 may be: all third sections of the first section 2111 are circular arcs, and the centers of the circles of all the third sections are located on the second axis; the radius of the third cross-section is greater than the radius of the second cross-section in the same plane perpendicular to the second axis. Of course, to make the connection 221 and the first section 2111 more compact, the radius of the third section should be slightly larger than the radius of the second section in the same plane perpendicular to the second axis. In particular, the radius of the third cross-section may be 1.01 to 1.3 times the radius of the second cross-section on the same plane perpendicular to the second axis.

All third cross-sections of the first section 2111 may be sequentially increasing in radius, sequentially decreasing in radius, or any other variation along a direction parallel to the second axis. Of course, to facilitate the forming of the first section 2111, all third cross-sections of the first section 2111 are preferably the same shape.

Referring to fig. 2 and 11, the receiving cavity 211 further includes a second section 2112 for connecting the first section 2111 with the upper surface 213. In order to locate the first boundary line P1 at the first section 2111, the second section 2112 can be formed by only one of the front core insert 110 or the front core lifter 130, but not by a combination of the two. Considering that the first forming portion 131 of the front mold lifter 130 needs to be removed from the locking ring 212 when the mold is opened, the front mold lifter 130 may move in the accommodating cavity 211 in a direction parallel to the first axis. Thus, the second section 2112 cannot be completely formed by the front mold lifter 130, i.e., the second section 2112 needs to be formed by the front mold core 110.

The front core 110 includes a first molding surface 111 for molding the second section 2112, as can be seen in fig. 12. The first molding surface 111 may be planar. Of course, the first molding surface 111 may be a smooth curved surface to enable the first segment 2111 to be smoothly and transitionally connected with the upper surface 213 of the turning portion housing 220 and to make the structure of the fixing portion housing 210 beautiful. The central axis of the first forming portion 131 is a first axis, and a section of the first forming surface 111 taken through a plane perpendicular to the first axis is a first cross section, so that all the first cross sections of the first forming surface 111 may be circular arcs and have equal radii, in order to facilitate the machining and forming of the first section 2111.

Referring to fig. 2 and 12, the dividing line between the first segment 2111 and the second segment 2112 is a second dividing line P2, and the second dividing line P2 may be a straight line or a curved line. Of course, the second dividing line P2 is preferably a straight line for ease of forming. By setting all the first cross-sectional shapes to be the same, it is possible to realize the second boundary line P2 as a straight line.

Of course, when all of the first cross-sections of the first molding surface 111 are circular arcs, the first section 2111 may include a first sub-section and a second sub-section in order to make the connection of the first section 2111 and the second section 2112 smoother. Wherein the first subsection fits into the connection 221 and the second subsection is used to smoothly connect the first subsection with the second subsection 2112. A plane of the first sub-section, which is sectioned by a plane perpendicular to the second axis, is a fourth cross-section, and the first sub-section and the connecting portion 221 may be adapted as follows: all the fourth sections of the first subsection are circular arcs, and the circle centers of all the fourth sections are located on the second axis; and the radius of the fourth cross section is larger than that of the second cross section on the same plane perpendicular to the second axis. Of course, in order to make the connection of the connection 221 with the first subsection tighter, the radius of the fourth cross-section should be slightly larger than the radius of the second cross-section in the same plane perpendicular to the second axis. In particular, the radius of the fourth cross-section may be 1.01 to 1.3 times the radius of the second cross-section on the same plane perpendicular to the second axis. The first dividing line P1 may be located in the first sub-section or in the second sub-section.

Referring to fig. 11, the front core 110 further includes a second molding surface 112 for molding the upper surface 213, and in order to make the first boundary line P1 hidden well, the minimum distance from the first boundary line P1 to the second molding surface 112 may be 0.9mm or more.

Referring to fig. 6, the front mold core 110 is provided with a first inclined hole 113. The inclination of the first inclined hole 113 with respect to the mold opening direction means that the axis of the first inclined hole 113 is not parallel to the mold opening direction. The mold opening direction may be any direction in which the front mold core 110 and the rear mold core 120 are separated from each other. When the mold is opened, the front mold core 110 may move relative to the rear mold core 120; the back core 120 may be moved relative to the front core 110. When the front mold core 110 is located right above the rear mold core 120 and the rear mold core 120 moves relative to the front mold core 110 during mold opening, the mold opening direction may be any direction in which the rear mold core 120 moves downward, and the inclination of the first inclined hole 113 is relative to the moving direction of the rear mold core 120, which means that the axis of the first inclined hole 113 is not parallel to the moving direction of the rear mold core 120 during mold opening. For example, when the front mold core 110 is located right above the rear mold core 120 and the moving direction of the rear mold core 120 is vertical downward during mold opening, the inclination of the first inclined hole 113 means that the axis is not vertical.

Referring to fig. 6, a first end of the first inclined hole 113 is communicated with the mold cavity Q, and a second end extends to an outer wall of the front mold core 110 along a direction away from the rear mold core 120. The outer wall of the front mold core 110 may be any surface different from the surface facing the rear mold core 120. For example, when the front core 110 is located right above the rear core 120, the surface of the front core 110 facing the rear core 120 is the bottom surface of the front core 110, and at this time, the outer wall of the front core 110 may be the top surface of the front core 110, i.e., the first inclined hole 113 extends from the bottom surface of the front core 110 to the top surface of the front core 110; the outer wall of the front core 110 may also be any one side surface of the front core 110, that is, the first inclined hole 113 extends from the bottom surface of the front core 110 to any one side surface of the front core 110.

The second end of the front mold lifter 130 passes through the first inclined hole 113 and is located on a side of the front mold core 110 away from the rear mold core 120. When the mold is opened, the front mold lifter 130 may have a moving stroke in a direction perpendicular to the mold opening direction when the mold is opened, because the axis of the first inclined hole 113 is not parallel to the mold opening direction. The first forming part 131 can be moved out of the inner surface of the lock ring 212 by a moving stroke of the front mold lifter 130 in a direction perpendicular to the mold opening direction when the mold is opened, specifically, the moving direction of the front mold lifter 130 in the direction perpendicular to the mold opening direction when the mold is opened is defined as a first direction N, and a central axis of the first forming part 131 can be parallel to the first direction N. Specifically, since the front mold lifter 130 further includes the second molding portion 132 for molding the accommodating cavity 211, the first direction N may be a direction in which an end of the first molding portion 131 far from the second molding portion 132 points to an end close to the second molding portion 132, so that the first molding portion 131 can be smoothly removed from the lock ring 212, as shown in fig. 6, 7, 16 and 17.

To realize the mold opening, the front mold core 110 can push the first forming portion 131 to move out of the locking ring 212, and the orthographic projection of the first forming portion 131 on the surface of the rear mold core 120 facing the front mold core 110 should satisfy: is collinear with the orthographic projection of the first inclined hole 113 on the surface of the rear mold core 120 facing the front mold core 110, and is less than or equal to the length of the orthographic projection of the first inclined hole 113 on the surface of the rear mold core 120 facing the front mold core 110. The orthographic projection of the first inclined hole 113 on the surface of the rear mold core 120 facing the front mold core 110 refers to the orthographic projection of the contour line of the first inclined hole 113 on the surface of the rear mold core 120 facing the front mold core 110. For example, when the surface of the rear core 120 facing the front core 110 is the top surface thereof, the orthographic projection of the first forming portion 131 on the top surface of the rear core 120 should satisfy: is collinear with the orthographic projection of the first inclined hole 113 on the top surface of the back mold core 120, and the length is less than or equal to the length of the orthographic projection of the first inclined hole 113 on the top surface of the back mold core 120.

If the front mold lifter 130 does not move along the first direction N but remains stationary with the front mold core 110 in the early stage of mold opening, the front mold core 110 drives the front mold lifter 130 and the molded fixed portion housing 210 to move relative to the rear mold core 120 during mold opening, so that only the first molding portion 131 of the front mold lifter 130 is connected with the lock ring 212 of the fixed portion housing 210, and if the whole fixed portion housing 210 is driven to move, a pulling phenomenon may occur to cause poor molding effect of a product, and in order to avoid the above problem, the front mold lifter 130 can move along the first direction N under the limitation of the first inclined hole 113 in a manual assistance manner during mold opening, so that the molded fixed portion housing 210 can be located on the rear mold core 120 after mold opening.

Of course, to reduce labor costs, referring to fig. 4, the mold 100 may include a traction device 140 for ensuring that the front mold lifter 130 is movable in the first direction N under the definition of the first inclined hole 113. Referring to fig. 4, 6 and 9, the drawing device 140 is connected to the rear mold core 120, a first end of the front mold lifter 130 is located in the mold cavity Q, a second end passes through the first inclined hole 113 and is connected to the drawing device 140, and the second end of the front mold lifter 130 may have a stroke in the first direction N on the drawing device 140. At this time, since the traction device 140 is connected to the rear mold core 120, the traction device 140 moves along the rear mold core 120, and when the front mold core 110 and the rear mold core 120 move relatively during mold opening, since the second end of the front mold lifter 130 is connected to the traction device 140, the front mold lifter 130 also moves along the rear mold core 120 and also moves along the first direction N under the limitation of the first inclined hole 113 of the front mold core 110.

The first end of the pulling device 140 may be connected to the rear mold core 120, and the second end may be located at any position. For example, the second end of the pulling device 140 may be located on a side of the front mold core 110 away from the rear mold core 120; at this time, the traction device 140 may penetrate through the front mold core 110, or the traction device 140 may not penetrate through the front mold core 110. Traction device 140 may be any device having a traction function; for example, the traction device 140 may be a rod. Of course, in order to make the distance between the front mold core 110 and the rear mold core 120 large enough after the mold opening, and to facilitate the taking out of the fixed portion housing 210, the traction device 140 may be a device that can be separated after moving a distance; for example, the traction device 140 may include a plurality of parts that are attracted together via a magnetic attraction, and when the traction force is sufficiently large, the plurality of parts attracted together via the magnetic attraction may be separated. Traction device 140 may also include multiple components that are connected together via cinching, or the components that are connected together via cinching may be separated when the traction force is sufficiently great.

When the traction device 140 is a first rod, the first rod may be shaped like L, and the first end may be connected to the rear mold core 120, the second end may be provided with a guide groove extending in parallel to the first direction N, and the second end of the front mold lifter 130 is clamped in the guide groove and has a stroke in the first direction N.

When the pulling device 140 includes a plurality of components that are attracted together by magnetic attraction, the pulling device 140 may specifically include a sleeve 141a, a second rod 142a, a first magnetic stripe 143a, and a second magnetic stripe 144a, a first end of the second rod 142a may be connected to the rear mold 120, and a second end may be located inside the sleeve 141 a. One end of the sleeve 141a away from the second rod 142a may be connected to the second end of the front mold lifter 130, and the second end of the front mold lifter 130 has a stroke in the first direction N on the sleeve 141 a. The outer surface of the second rod 142a may be provided with a plurality of first magnetic strips 143a, and the inner surface of the sleeve 141a may be provided with a plurality of second magnetic strips 144a, so that the second end of the second rod 142a is located inside the sleeve 141a by adsorption between the first magnetic strips 143a and the second magnetic strips 144 a. When the mold is opened, if the rear mold core 120 moves relative to the front mold core 110, the sleeve 141a will move a distance along with the second rod 142a and the rear mold core 120 due to the absorption of the first magnetic stripe 143a and the second magnetic stripe 144a, and when the rear mold core 120 continues to move, the second rod 142a will be separated from the sleeve 141a, so that the distance between the front mold core 110 and the rear mold core 120 can be large enough to facilitate the removal of the fixing portion housing 210. An ejector plate may also be provided between the second end of the sleeve 141a and the second end of the front mold lifter 130 to enable a movable connection by the ejector plate.

If the front mold lifter 130 is configured such that the first forming portion 131 is moved out of the locking ring 212 before the second rod 142a and the sleeve 141a are separated, it can be ensured that the fixing portion housing 210 is completely attached to the rear mold core 120 when the fixing portion housing 210 is not pushed by the ejector 160. The front mold lifter 130 is configured such that the first molding portion 131 moves out of the lock ring 212 before the second rod 142a is separated from the sleeve 141a, and the length of the portion of the second rod 142a located in the sleeve 141a, the area of the second rod 142a where the first magnetic stripe 143a is disposed, the area of the sleeve 141a where the second magnetic stripe 144a is disposed, and the like may be adjusted according to the distance that the rear mold core 120 moves when the first molding portion 131 moves out of the lock ring 212. For example, if the rear core 120 moves downward 20mm when the first molding portion 131 is completely removed from the locking ring 212, the length of the second rod 142a in the sleeve 141a may be 20mm or more; the area of the second rod 142a on which the first magnetic stripe 143a is disposed may be the entire outer surface of the second rod 142a, or may be the outer surface of the portion of the second rod 142a located in the sleeve 141 a; the area of the sleeve 141a in which the second magnetic stripe 144a is disposed may be the entire inner surface of the sleeve 141a, or may be a port of the sleeve 141a near the second rod 142 a.

The stroke of the second end of the front mold lifter 130 in the first direction N on the sleeve 141a may be that a guide portion is arranged at one end of the sleeve 141a far from the second rod 142a, the guide portion is provided with a guide groove extending in parallel to the first direction N, and the second end of the front mold lifter 130 is clamped in the guide groove and has the stroke in the first direction N in the guide groove.

When the pulling device 140 comprises a plurality of components connected together by a clamping action, referring to fig. 6 and 9, the pulling device 140 may comprise a mounting member 145b and a fastening member 146b, wherein the mounting member 145b is located on the side of the front mold core 110 away from the rear mold core 120. Fastener 146b is connected to rear mold core 120 at a first end and to mounting member 145b at a second end. The second end of the front mold lifter 130 passes through the first inclined hole 113 and is connected to the mounting part 145b, and the front mold core 110 pushes the front mold lifter 130 to move on the mounting part 145b along the first direction N when the mold is opened. The fastener 146b comprises a buckle 1461 and a snap ring 1462, a first end of the buckle 1461 is connected to the rear mold core 120, and a second end is clamped at a first end of the snap ring 1462; a second end of snap ring 1462 is coupled to mounting member 145 b. When the mold is opened, the snap ring 1462 will move a distance along with the snap ring 1461 and the rear mold core 120 due to the tightening action between the snap ring 1461 and the snap ring 1461, and when the rear mold core 120 continues to move, the snap ring 1461 and the snap ring 1462 will be separated, so that the distance between the front mold core 110 and the rear mold core 120 can be large enough to facilitate the removal of the fixing part housing 210. The buckle 1461 can be a nylon rubber plug, and the snap ring 1462 can be a nylon rubber plug sleeve.

If the front mold lifter 130 is configured such that the first forming portion 131 is moved out of the locking ring 212 before the buckle 1461 is separated from the snap ring 1462, it can be ensured that the fixing portion housing 210 is completely attached to the rear mold core 120 when the fixing portion housing 210 is not pushed by the ejecting device 160. The front mold lifter 130 is configured such that the first mold portion 131 moves out of the locking ring 212 before the catch 1461 is separated from the snap ring 1462, and the length of the portion of the catch 1461 within the snap ring 1462 can be adjusted based on the distance the rear mold core 120 moves as the first mold portion 131 moves out of the locking ring 212.

Referring to fig. 6, the front mold lifter 130 moves on the mount 145b in the first direction N may be such that the mount 145b includes an ejector plate 1451, the ejector plate 1451 is provided with a guide groove 14511 extending in parallel with the first direction N, and the second end of the front mold lifter 130 is caught to the guide groove 14511 and moves in the first direction N within the guide groove 14511.

When the second end of the front mold lifter 130 has an extension portion extending in a direction opposite to the first direction N, the front mold lifter 130 may move on the mounting member 145b in the first direction N, and the mounting member 145b may further include an ejector plate provided with a guide hole extending in parallel to the first direction N, the extension portion being engaged with the guide hole and moving in the guide hole in the first direction N.

When the fixed portion housing 210 formed after the mold opening is located on the rear mold core 120, the separation of the front mold core 110 and the rear mold core 120 in the mold opening process can move the front mold core 110 away from the portion for forming the inner surface of the accommodating cavity 211, so that a gap is left in the accommodating cavity 211, and thus the first forming portion 131 moves towards the gap along the first direction N without being hindered by the front mold core 110, thereby ensuring the smooth mold opening.

After mold opening, the positions of the front mold lifter 130 and the drawing device 140 are changed from the mold closing position, and in order to facilitate the restoration of the front mold lifter 130 and the drawing device 140 from the mold opening position to the mold closing position, referring to fig. 4, the mold 100 may further include a restoring device 150 for restoring the front mold lifter 130 from the mold opening position to the mold closing position. The reset device 150 may be an elastic expansion member located between the front mold core 110 and the mounting member 145 b; the resilient bellows may be a spring.

Referring to fig. 8, when the mounting member 145b is provided with a stepped hole 1452, and the stepped hole 1452 has a stepped surface 14521 facing away from the front core 110, the resetting device 150 may include a connecting rod 151 and an elastic telescopic member 152, wherein the connecting rod 151 passes through the stepped hole 1452, and has a first end connected to the front core 110 and a second end located at a side of the mounting member 145b away from the front core 110. The outer wall surface of the second end of the link 151 extends in a direction parallel to the step surface 14521 to form a shielding portion 153. The first end of the elastic expansion piece 152 abuts against the step surface 14521, and the second end abuts against the surface of the shielding portion 153 facing the step surface 14521. The elastic expansion member 152 may be a spring, and at this time, the elastic expansion member 152 may be sleeved on the connecting rod 151.

The number of the front mold lifter 130 may be plural, the number of the first inclined holes 113 is equal to the number of the front mold lifter 130, each front mold lifter 130 passes through one of the first inclined holes 113, and the specific number of the front mold lifter 130 is determined according to the number of the locking rings 212 on the holder housing 210. When the fixing portion housing 210 has two locking rings 212 and the central axes of the two locking rings 212 are coaxial or parallel to each other, the number of the front mold lifter 130 is two and the number of the first inclined hole 113 is two. The distance between the two first inclined holes 113 may be gradually increased from the side of the front core 110 close to the rear core 120 to the side of the front core 110 far from the rear core 120. The second end of each front mold lifter 130 passes through one of the first inclined holes 113 and then is connected to the traction device 140, and the stroke directions of the two front mold lifters 130 on the traction device 140 are opposite. At this time, the two first forming portions 131 of the two front mold lifter 130 are disposed back to back, and the two first forming portions 131 move toward the accommodating cavity 211 to move out of the lock ring 212 when the mold is opened.

In order to enable the two front mold lifter 130 to move smoothly in the corresponding first inclined hole 113 during mold opening, the axes of the two first inclined holes 113 may be in the same plane, and the plane may be parallel to the mold opening direction. For example, the front mold core 110 is located above the rear mold core 120, the rear mold core 120 moves relative to the front mold core 110 when the mold is opened, and the moving direction of the rear mold core 120 is vertical downward when the mold is opened, so that a plane where the axes of the two first inclined holes 113 are located should be a vertical plane. The axes of the two first inclined holes 113 may be located in two parallel planes, and the two parallel planes are parallel to the mold opening direction. For example, the front mold core 110 is located above the rear mold core 120, the rear mold core 120 moves relative to the front mold core 110 when the mold is opened, and the moving direction of the rear mold core 120 is vertical downward when the mold is opened, and two parallel planes on which the axes of the two first inclined holes 113 are located should be a vertical plane.

In order to ensure that the fixed portion housing 210 is completely attached to the rear mold core 120 before the ejection device 160 pushes the fixed portion housing 210 during mold opening, referring to fig. 6 and 13, the rear mold core 120 may include a first mold plate 121, a second mold plate 122 and a third mold plate 123, the first mold plate 121 is disposed opposite to the front mold core 110, and the second mold plate 122 and the third mold plate 123 are disposed between the first mold plate 121 and the front mold core 110 and on two sides of the first mold plate 121, respectively, so as to form a mold cavity Q between the front mold core 110, the first mold plate 121, the second mold plate 122 and the third mold plate 123. Referring to fig. 7, the second mold plate 122 is provided with first protrusions 1221 forming part of the inner surface of one of the locking rings 212, and the third mold plate 123 is provided with second protrusions 1231 forming part of the inner surface of the other locking ring 212. When the mold is opened, the first protrusion 1221 and the second protrusion 1231 are both located in the locking ring 212, so that the fixing portion housing 210 is completely attached to the rear mold core 120. At this time, when the fixing unit housing 210 is pushed out of the rear mold core 120, the second mold plate 122 and the third mold plate 123 are moved to remove the first projection 1221 and the second projection 1231 from the locking ring 212.

In order to allow the fixing portion housing 210 to be easily removed from the rear mold core 120 after the mold is opened, referring to fig. 4 and 6, the mold 100 may further include an ejector 160. The ejection device 160 may be vertically disposed; when the ejection device 160 is vertically disposed, the ejection device 160 includes a push rod. The rear mold core 120 has a vertical hole, a first end of the lift pin is located between the front mold core 110 and the rear mold core 120, and a second end of the lift pin is located on a side of the rear mold core 120 away from the front mold core 110. When the ejector pins are configured to be clamped, the first end forms part of the surface of the fixed part housing 210; when the mold is opened, the second end is pushed, and the first end can move in the vertical hole to push the fixed portion shell 210 away from the rear mold core 120.

In order to enable the ejection device 160 to directly push the fixing portion housing 210 to the periphery of the rear mold core 120 for the operator to take out. The ejection device 160 may also be obliquely disposed; when the ejector 160 is tilted, the ejector 160 may include a rear mold tilt head 161, see fig. 4. The rear mold core 120 has a second inclined hole, the rear mold lifter 161 passes through the second inclined hole, and the first end is located between the front mold core 110 and the rear mold core 120, and the second end is located on a side of the rear mold core 120 away from the front mold core 110. The rear mold lifter 161 is configured such that when the molds are closed, the first end molds a surface of a portion of the fixed portion housing 210; when the mold is opened, the second end is pushed, and the first end can push the fixed portion housing 210 away from the rear mold core 120 and move toward the periphery of the rear mold core 120 under the limitation of the second inclined hole.

In the description of the present application, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art. Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the scope of the present application, so that the present application is not limited thereto, and all equivalent variations and modifications can be made to the present application.

Claims (10)

1. A mould for forming a fixed part shell of a flip device comprises a turnover part shell, wherein the turnover part shell comprises a connecting part and a rotating shaft arranged on the connecting part, and the central axis of the connecting part is collinear with the central axis of the rotating shaft; the fixed part shell comprises an accommodating cavity for accommodating the connecting part and a locking ring rotationally connected with the rotating shaft; characterized in that the mould comprises:

a rear mold core;

the front mold core and the rear mold core form a mold cavity of the fixed part shell; and

the first end of the front die lifter is positioned in the die cavity and comprises a first forming part and a second forming part, and the first forming part is used for forming the inner surface of the locking ring; the second forming part is used for being combined with the front mold core to form the inner surface of the accommodating cavity;

the inner surface of the accommodating cavity comprises a first section matched with the connecting part, and the first section and the upper surface of the fixed part shell are arranged at intervals; the boundary line of the second forming part and the front die core on the inner surface of the accommodating cavity is a first boundary line, and the first boundary line is positioned at the first section.

2. The mold according to claim 1, wherein the inner surface of the receiving cavity further comprises a second section for connecting the first section with the upper surface, the front core comprises a first molding surface for molding the second section, a central axis of the first molding portion is a first axis, a section of the first molding surface taken through a plane perpendicular to the first axis is a first section, all the first sections of the first molding surface are circular arcs, and all the first sections have the same radius.

3. The mold of claim 2, wherein all of said first cross-sections are the same shape.

4. The mold according to claim 1, wherein the front core further comprises a second molding surface for molding the upper surface, and a minimum distance from the first boundary line to the second molding surface is 0.9mm or more.

5. The mold according to claim 1, wherein the front mold core is provided with a first inclined hole, a first end of the first inclined hole is communicated with the mold cavity, and a second end of the first inclined hole extends to the outer wall of the front mold core along a direction away from the rear mold core; the second end of the front mould inclined top penetrates through the first inclined hole and is positioned on one side of the front mould core, which is far away from the rear mould core;

the front mold core is configured to push the front mold lifter to move along a first direction when the mold is opened so as to enable the first forming part to move out of the lock ring; the central axis of the first forming portion is a first axis, the first direction is parallel to the first axis, and the direction of one end of the first forming portion, which is far away from the second forming portion, points to the direction close to one end of the second forming portion.

6. The mold of claim 5, further comprising:

the mounting piece is positioned on one side of the front die core, which is far away from the rear die core; and

the first end of the buckling piece is connected with the rear die core, and the second end of the buckling piece is connected with the mounting piece;

wherein the second end of the front mold lifter passes through the first inclined hole and is connected to the mounting piece; when the front die core is configured to open the die, the front die is pushed to obliquely push the mounting piece to move along the first direction.

7. The mold of claim 6, wherein the mount comprises:

an ejector plate provided with a guide groove extending in parallel to the first direction;

and the second end of the front mould inclined top is clamped in the guide groove and can move in the guide groove along the first direction.

8. The mold of claim 6, wherein said fastener comprises:

the first end of the buckle is connected with the rear die core; and

the first end cover of snap ring is located the second end of buckle, the second end of snap ring connect in the installed part.

9. The mold according to claim 6, wherein the number of the slanted ejecting portions of the front mold and the number of the first slanted holes are two, and the distance between the two first slanted holes gradually increases from the side of the front mold core close to the rear mold core to the side of the front mold core away from the rear mold core; and the second end of each front mould inclined top passes through one first inclined hole and then is connected to the mounting piece, and the stroke directions of the two front mould inclined tops on the mounting piece are opposite.

10. The mold of claim 5, further comprising:

and the resetting device is used for restoring the front mold lifter from the mold opening position to the mold closing position.

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