Insert core structure and mold

Abstract

The insert core structure is made of beryllium copper, the insert core structure comprises an insert core body, the insert core body comprises a first end, a second end and a side face connected between the first end and the second end, and the second end is used for being inserted into a through hole of a product to be formed; the channel is arranged in the insert core body and used for introducing fluid, the channel comprises an inlet, a first outlet and a first extension section arranged between the inlet and the first outlet along a flowing path of the fluid in the channel, the inlet and the first outlet are both arranged at the first end, and the first extension section extends towards the second end. The second end of the insert structure is inserted into the through hole of the product corresponding to the mold, fluid is introduced into the channel, and the cooling rate of plastic is slowed down and the fluidity of the plastic is improved by utilizing the excellent heat-conducting property of beryllium copper and the local temperature rise of the structure of the through hole of the product corresponding to the mold, so that the outer side wall of the through hole of the product can be smoothly filled with the plastic; and the probability of shrinkage defects and stress mark defects on the front surface of the product is reduced.

Description

Technical Field

[0001] This application relates to the field of molds, and more particularly to insert structures and molds. Background Technology

[0002] Currently, most electronic product backplate bases are manufactured using plastic molding technology. Backplate bases typically have oblong holes. However, due to uneven wall thickness on the sidewalls of the backplate base, these oblong holes are prone to shrinkage during the plastic molding process. Therefore, it is necessary to increase the holding pressure during molding to ensure that the molten plastic can smoothly fill the sidewalls of the oblong holes. However, because there are many ribs on the back of the backplate base, excessive pressure can cause stress marks on its surface, resulting in an appearance quality that does not meet customer requirements. Therefore, how to simultaneously solve the two contradictory problems of shrinkage and stress marks has become a pressing issue for those in the field. Utility Model Content

[0003] In view of this, this application provides an insert structure and mold that can solve the above-mentioned technical problems.

[0004] This application provides an insert structure made of beryllium copper. The insert structure includes an insert body and a channel disposed in the insert body for introducing fluid. The insert body includes a first end, a second end, and a side surface connecting the first end and the second end. The second end is used to insert into a through hole of a product to be molded. Along the flow path of the fluid in the channel, the channel includes an inlet, a first outlet, and a first extension section disposed between the inlet and the first outlet. The inlet and the first outlet are located at the first end, and the first extension section extends toward the second end.

[0005] Based on the first aspect, in some possible implementations, the insert body includes a first portion, a second portion, and a third portion connected sequentially along a direction from the first end to the second end, the first portion including the first end, the third portion including the second end; the first extension segment extends from the first portion to the second portion, and the first extension segment is not disposed in the third portion.

[0006] Based on the first aspect, in some possible implementations, the channel further includes a main path extending from the inlet to the first outlet, the first extension connecting the main path, the first extension intersecting the main path at a connection port, the connection port dividing the main path into a first flow path connecting the inlet and a second flow path connecting the first outlet.

[0007] Based on the first aspect, in some possible implementations, the first extension section includes a first head section near the first end and a first tail section near the second end, the first head section and the first tail section are respectively located on both sides of the communication port, the first head section forms a second outlet at the first end, and a sealing structure is provided at the second outlet, the sealing structure being a screw plug or solder.

[0008] Based on the first aspect, in some possible implementations, the channel further includes a second extension section located in the first portion and communicating with the first flow path, and the second extension section forms a third outlet on the side located in the first portion, the third outlet being provided with a sealing structure, the sealing structure being a screw plug or solder.

[0009] Based on the first aspect, in some possible implementations, the insert body further includes two mounting holes that extend through the first portion from the first end and are spaced apart on the same side of the channel. The mounting holes are configured to install fasteners, which are configured to install the insert structure to the mold.

[0010] Based on the first aspect, in some possible implementations, a portion of the side surface is an arc surface extending from the first portion to the second portion, and a first groove is provided on the arc surface, the first groove extending from the first end to the second end.

[0011] Based on the first aspect, in some possible implementations, an exhaust hole is further provided between the two mounting holes, the exhaust hole extending through the first portion from the first end.

[0012] Based on the first aspect, in some possible implementations, a second groove is also provided on the side, the second groove is located in the second part, one end of the second groove is connected to the exhaust hole, and the other end of the second groove extends toward the second end.

[0013] A second aspect of this application provides a mold including the aforementioned insert structure.

[0014] The aforementioned insert structure is made of beryllium copper. The insert structure is inserted into the through hole of the product to be molded, and fluid is introduced into the channel. Utilizing the excellent thermal conductivity of beryllium copper, the local temperature at the through hole rises, which slows down the cooling rate of the plastic melt and increases its fluidity. It is not necessary to increase the holding pressure so that the plastic can smoothly fill the outer wall of the through hole, reducing the probability of shrinkage defects on the outer wall and stress mark defects on the front surface caused by using high pressure. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional schematic diagram of an insert structure inserted into a product to be formed, according to one embodiment of this application.

[0017] Figure 2 for Figure 1 A three-dimensional schematic diagram of the insert structure is shown.

[0018] Figure 3 for Figure 2 A three-dimensional schematic diagram of the insert structure from another perspective.

[0019] Figure 4 for Figure 2 The cross-sectional view of the insert structure shown is along the cutting line IV-IV.

[0020] Figure 5 for Figure 2 The diagram shows a cross-sectional view of the insert structure along the cutting line VV.

[0021] Figure 6 This is a three-dimensional schematic diagram of the insert structure provided for another embodiment of this application.

[0022] Figure 7 for Figure 6 A three-dimensional schematic diagram of the insert structure from another perspective.

[0023] Figure 8 for Figure 6 The cross-sectional view of the insert structure shown is along the cutting line VIII-VIII.

[0024] Figure 9 for Figure 6 The cross-sectional view of the insert structure shown is along the cutting line IX-IX.

[0025] Explanation of main component symbols

[0026] Insertion structure 100; Insertion body 110; Channel 120; First part 10; Second part 20; Third part 30; First end 11; Second end 12; Side 13; First side 131; Second side 132; Third side 133; Fourth side 134; Fifth side 135; Sixth side 136; Seventh side 137; Eighth side 138; Ninth side 139; Arc surface 14; First groove 141; Second groove 142; Connecting surface 15; First extension section 21; First head section 211; First tail section 212; Second extension section 22; Main flow path 23; First flow path 231; Second flow path 232; Inlet 263; Connecting port 25; First outlet 261; Second outlet 262; Third outlet 24; Mounting hole 27; Vent hole 28; Product 200; Through hole 210; Outer side wall 211; The following specific embodiments will further illustrate this application in conjunction with the above drawings. Detailed Implementation

[0027] The embodiments of this application are described in detail below. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0030] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0031] Please see Figures 1 to 5This application provides an insert structure 100 made of beryllium copper. The insert structure 100 includes an insert body 110 and a channel 120 disposed within the insert body. The insert body 110 includes a first end 11, a second end 12, and a side surface 13 connecting the first end 11 and the second end 12. The second end 12 is used to insert into a through hole 210 of a product to be molded. The channel 120 is used to introduce fluid. Along the flow path of the fluid within the channel 120, the channel 120 includes an inlet 263, a first outlet 261, and a first extension section 21 disposed between the inlet 263 and the first outlet 261. The inlet 263 and the first outlet 261 are both located at the first end 11, and the first extension section 21 extends toward the second end 12. In some embodiments, the fluid can be high-temperature water or other suitable liquids. In some embodiments, the positions of the inlet 263 and the first outlet 261 can be interchanged depending on the specific connection method between the channel 120 and an external fluid source.

[0032] In use, the second end 12 of the insert structure 100 is inserted into the through hole 210 of the product to be molded 200. High-temperature fluid is introduced into the channel 120 from the inlet 263. After the high-temperature fluid flows through the first extension section 21, it flows out from the first outlet 261. Since the insert structure 100 is made of beryllium copper, it has good thermal conductivity and can transfer heat from the first extension section 21 to the second end 12, which increases the local temperature around the through hole 210, slows down the cooling rate of the plastic melt, and increases its fluidity. It is not necessary to increase the holding pressure so that the plastic can smoothly fill part of the outer wall 211 of the through hole 210 (the through hole 210 is relatively close to the edge of the product to be molded 200. If the fluidity of the plastic melt is not good, the circumferential position of part of the through hole 210, especially the position indicated by the label 211, cannot be effectively filled by the plastic). This reduces the probability of shrinkage defects on the outer wall 211 and stress mark defects on the front caused by using high pressure. It can be understood that the outer wall 211 is the side wall of the entire product 200 to be formed, and it also serves as part of the side wall of the through hole 210.

[0033] In this embodiment, the insert body 110 includes a first part 10, a second part 20, and a third part 30 connected sequentially along the direction from the first end 11 to the second end 12. The first part 10 includes the first end 11, and the third part 30 includes the second end 12. A first extension section 21 extends from the first part 10 to the second part 20, and the first extension section 21 is not provided in the third part 30. Due to the limited internal space of the mold (not shown), the insert body 110 can be fixed to the mold (not shown) through the first part 10, and the first part 10 is provided with a channel 120 for external connection of high-temperature fluid. The second part 20 is used for heat conduction, and the third part 30, in addition to being used for heat conduction, is also used to form the outer wall 211 of the through hole 210.

[0034] Please see Figure 2 and Figure 3 In this embodiment, the first part 10 further includes a first side 131, a second side 132, a third side 133, and a fourth side 134. The first side 131 and the second side 132 are located on opposite sides of the first part 10, and the third side 133 and the fourth side 134 are located on opposite sides of the first part 10. The first side 131, the second side 132, the third side 133, and the fourth side 134 are connected to each other in pairs through connecting surfaces 15, and together surround to form the side 13 located in the first part 10.

[0035] The second part 20 includes a fifth side 135, a sixth side 136, a seventh side 137, and an eighth side 138. The fifth side 135 and the sixth side 136 are located on opposite sides of the second part 20, and the seventh side 137 and the eighth side 138 are located on opposite sides of the second part 20. The fifth side 135, the sixth side 136, the seventh side 137, and the eighth side 138 are connected to each other in pairs through connecting surfaces 15, and together surround to form the side 13 located in the second part 20.

[0036] The third part 30 includes a ninth side 139, the curved surface of which surrounds and forms the side 13 located in the third part 30.

[0037] The insert body 110 also includes two mounting holes 27, which extend from the first end 11 through the first portion 10 and are spaced apart on the same side of the channel 120. The two mounting holes 27 are used to place fasteners (such as countersunk screws) so that the insert body 100 can be fixed to the mold (not shown).

[0038] Please see Figure 3 In this embodiment, there is an arc surface 14 on the fourth side surface 134. The arc surface 14 and the sixth side surface 136 are on the same plane. The arc surface 14 extends from the first part 10 to the second part 20. A first groove 141 is provided on the arc surface 14. The first groove 141 extends from the first end 11 to the second end 12.

[0039] Please see Figure 5 The passage 120 also includes a main path 23 extending from the entrance 263 to the first exit 261. The first extension 21 connects to the main path 23. The first extension 21 intersects with the main path 23 at the connection port 25. The connection port 25 divides the main path 23 into a first flow path 231 connecting the entrance 263 and a second flow path 232 connecting the first exit 261.

[0040] In this embodiment, the diameter d6 of the portion of the first flow path 231 near the inlet 263 is any value within the range of 6 mm to 10 mm. The diameter of the portion of the first flow path 231 away from the inlet 263 is d2, and the diameter of the second flow path 232 is d3, where d2 = d3 = 6 mm. In some embodiments, d2 and d3 can be any values ​​within the range of 6 mm to 10 mm, depending on the actual size of the entire inlet structure 100.

[0041] The first extension 21 includes a first head section 211 near the first end 11 and a first tail section 212 near the second end 12. The first head section 211 and the first tail section 212 are located on both sides of the connecting opening 25, and the first head section 211 forms a second outlet 262 at the first end 11. In this application, the second outlet 262 is a through hole for machining the channel 120. After the channel 120 is machined, the hole can be sealed by means of screw plugs or welding.

[0042] In this embodiment, the diameter d4 of the first segment 211 is 10 mm. In some embodiments, d4 can be any value between 6 mm and 10 mm, depending on the actual size of the insert structure 100. The diameter d5 of the first tail segment 212 is any value between 6 mm and 10 mm. The distance from the end of the first tail segment 212 away from the first segment 211 to the second end 12 is 25 mm. Due to the structure of the mold (not shown), this distance is the shortest distance from the end of the first tail segment 212 away from the first segment 211 to the second end 12. At this time, the temperature rise at the through hole 210 by the insert structure 100 is more significant, which helps to slow down the cooling rate of the molten plastic and allows the plastic to fill the outer wall of the through hole smoothly. In some embodiments, the distance from the end of the first tail segment 212 away from the first segment 211 to the second end 12 can be adjusted according to the specific structure of the mold (not shown) to achieve the purpose of this application.

[0043] The channel 120 also includes a second extension 22, which is located in the first portion 10 and communicates with the first flow path 231. The second extension 22 forms a third outlet 24 on the first side 131. The diameter d1 of the second extension 22 is any value within the range of 6 mm to 10 mm. In this application, the third outlet 24 is a through hole processed during the machining of the channel 120. After the channel 120 is machined, the hole can be sealed by means of screw plugs or welding.

[0044] Please see Figure 1 , Figures 6 to 9 Another embodiment of this application provides an insert structure 100.

[0045] Please see Figure 6 and Figure 8In another embodiment, an exhaust port 28 is provided between the two mounting holes 27, and the exhaust port 28 extends from the first end 11 through the first part 10. The exhaust port 28 in this application is used to remove air and volatile gases that have entered the sub-body 110.

[0046] The fifth side 135 is also provided with a second groove 142, which is located in the second part 20. One end of the second groove 142 is connected to the exhaust hole 28, and the other end of the second groove 142 extends toward the second end 12.

[0047] This application also provides a mold (not shown) including the aforementioned insert structure 100.

[0048] The working process of the substructure 100 provided in this application is roughly as follows:

[0049] The second end 12 of the insert structure 100 is inserted into the through hole 210 of the product to be molded 200. High-temperature fluid is introduced into the channel 120 from the inlet 263. Since the insert structure 100 is made of beryllium copper, it has good thermal conductivity and can transfer heat to the second end 12, which increases the local temperature around the through hole 210, slows down the cooling rate of the plastic melt, and increases its fluidity. The plastic can fill the outer wall 211 of the through hole 210 smoothly without increasing the holding pressure, which reduces the probability of shrinkage defects on the outer wall 211 and stress mark defects on the front surface caused by using high pressure.

[0050] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. An inserter structure, characterized in that, The insert structure is made of beryllium copper, and the insert structure includes: The insert body includes a first end, a second end, and a side surface connecting the first end and the second end, wherein the second end is used to insert into the through hole of the product to be formed; A channel, disposed in the inlet body and used to introduce fluid along the flow path of the fluid within the channel, the channel including an inlet, a first outlet and a first extension section disposed between the inlet and the first outlet, the inlet and the first outlet both being disposed at the first end, and the first extension section extending toward the second end.

2. The insert structure as described in claim 1, characterized in that, The inserter body includes a first part, a second part, and a third part connected sequentially along the direction from the first end to the second end. The first part includes the first end, and the third part includes the second end. The first extension segment extends from the first portion to the second portion, and the first extension segment is not provided in the third portion.

3. The insert structure as described in claim 2, characterized in that, The channel also includes a main flow path extending from the entrance to the first exit. The first extension segment connects to the main flow path, and the first extension segment intersects the main flow path at a connection port. The connection port divides the main flow path into a first flow path connecting the entrance and a second flow path connecting the first exit.

4. The insert structure as described in claim 3, characterized in that, The first extension section includes a first head section near the first end and a first tail section near the second end. The first head section and the first tail section are located on both sides of the communication port. The first head section forms a second outlet at the first end. A sealing structure is provided at the second outlet. The sealing structure is a screw plug or solder.

5. The insert structure as described in claim 3, characterized in that, The channel further includes a second extension section located in the first part and communicating with the first flow path, and the second extension section forms a third outlet on the side of the first part, wherein the third outlet is provided with a sealing structure, the sealing structure being a screw plug or solder.

6. The insert structure as described in claim 2, characterized in that, The insert body also includes two mounting holes, which extend through the first part from the first end and are spaced apart on the same side of the channel. The mounting holes are configured to install fasteners, which are configured to install the insert structure to the mold.

7. The insert structure as described in claim 6, characterized in that, The side surface of the part is an arc surface, which extends from the first part to the second part. A first groove is provided on the arc surface, which extends from the first end to the second end.

8. The insert structure as described in claim 6, characterized in that, An exhaust hole is also provided between the two mounting holes, and the exhaust hole extends through the first part from the first end.

9. The insert structure as described in claim 8, characterized in that, The side surface is also provided with a second groove, which is located in the second part. One end of the second groove is connected to the exhaust hole, and the other end of the second groove extends toward the second end.

10. A mold, characterized in that, Includes the insert structure as described in any one of claims 1 to 9.

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