CN216001202U - Injection mould for metal insert of backing plate mounting hole of electric vehicle tail box - Google Patents
Injection mould for metal insert of backing plate mounting hole of electric vehicle tail box Download PDFInfo
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- CN216001202U CN216001202U CN202121577266.4U CN202121577266U CN216001202U CN 216001202 U CN216001202 U CN 216001202U CN 202121577266 U CN202121577266 U CN 202121577266U CN 216001202 U CN216001202 U CN 216001202U
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Abstract
The utility model provides an injection mold for a metal insert of a mounting hole of a backing plate of a tail box of an electric vehicle, and belongs to the technical field of molds. The upper die plate and the lower die plate are respectively provided with an upper forming surface and a lower forming surface, the upper forming surface and the lower forming surface are combined to form a forming cavity, and the lower forming surface is provided with two inwards-concave lower object containing groove forming parts. Go up the shaping chamber that shaping face and lower shaping face combination formed and can injection moulding electric motor car boot backing plate, lower thing groove shaping portion and the cooperation of last thing groove shaping portion can make up out two inside sunken thing grooves of putting on the backing plate, thereby strengthening rib shaping structure can go out the intensity that a plurality of strengthening ribs can increase the backing plate at backing plate downside injection moulding, adjustable mounting hole shaping structure can be on the backing plate injection moulding go out the mounting hole and can adjust the aperture of injection moulding's mounting hole according to actual demand.
Description
Technical Field
The utility model belongs to the technical field of molds, and relates to an injection mold for a metal insert of a mounting hole of a backing plate of a tail box of an electric vehicle.
Background
The general injection moulding of electric motor car boot backing plate, the backing plate generally is through the bolt fastening in the boot, consequently need drill out the mounting hole that can supply the bolt to pass on the backing plate, for the production process who reduces the backing plate, can set up the shaping structure that is used for the injection moulding mounting hole in the mould among the prior art, but the aperture of the mounting hole shaping structure injection moulding's among the prior art mounting hole can't be adjusted according to actual demand.
In order to overcome the defects of the prior art, people continuously explore and propose various solutions, for example, a chinese patent discloses a trunk stay bar mold [ application number: 201920392964.3], which comprises a lower template, an upper template and an injection molding system, wherein one side of the lower template is provided with a positioning assembly, the positioning assembly comprises an installation positioning plate fixedly connected with the lower template, one side of the lower template, which is close to the installation positioning plate, is provided with a lower clearance groove, the lower surface of the upper template is provided with an upper clearance groove at a position corresponding to the lower surface, the lower surface of the upper template is fixed with a forming screw tap, the forming screw tap is right opposite to a support rod, the forming screw tap is inserted into the end part of the support rod, an injection port of the injection molding system is right opposite to one forming hole, a pin is inserted into the support rod and extends to the forming hole of the support rod, the pin is relatively fixed with the installation positioning plate, a manipulator piece taking plate is arranged on the positioning cavity, an anti-rotation bolt is connected with the manipulator piece taking plate through a thread, the anti-rotation bolt is abutted to the pin after passing through the manipulator piece taking plate, and the support rods with different lengths can share a set of mold, the cost reduction effect is achieved, but the above problems also exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and provides an injection mould for a metal insert of a mounting hole of a backing plate of a tail box of an electric vehicle.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides an electric motor car boot backing plate mounting hole metal insert injection mould, includes cope match-plate pattern and lower bolster, cope match-plate pattern and lower bolster on be equipped with shaping face and lower shaping face respectively, last shaping face and lower shaping face combination form the die cavity, lower shaping face on be equipped with two inside sunken thing groove shaping portions of putting down, last shaping face on be equipped with two outside protrusions and with the thing groove shaping portion of putting up of thing groove shaping looks adaptation down, lower shaping face on still be equipped with strengthening rib shaping structure, thing groove shaping portion of putting down on still be equipped with adjustable mounting hole shaping structure.
In foretell electric motor car boot backing plate mounting hole metal insert injection mould, mounting hole shaping structure with adjustable include that two settings are at the mounting hole shaping pole on putting thing groove shaping portion down, mounting hole shaping pole on the detachable cover be equipped with the cross-section be annular metal insert, metal insert top be higher than mounting hole shaping pole and support with last thing groove shaping portion and lean on, last thing groove shaping portion on still be equipped with the locating lever that inserts to the metal insert.
In foretell electric motor car boot backing plate mounting hole metal insert injection mould, last thing groove shaping portion of putting form by a plurality of rectangular blocks combinations that are the rectangular array and distribute, inside sunken cell body can be gone out in injection moulding's product top shaping to every rectangular block, a plurality of cell body combinations form latticed cell body structure.
In the injection mold for the metal insert of the mounting hole of the backing plate of the electric vehicle trunk, the upper object groove forming part is also provided with a drain hole forming structure.
In the injection mold for the metal insert of the mounting hole of the backing plate of the electric vehicle trunk, the drain hole forming structure comprises a drain hole forming rod arranged at the top of the partial rectangular block, and the bottom of the drain hole forming rod is abutted against the lower object placing groove forming part.
In foretell electric motor car boot backing plate mounting hole metal insert injection mould, strengthening rib shaping structure include a plurality of horizontal rib shaping grooves and vertical rib shaping groove that set up on the shaping surface under, horizontal rib shaping groove and vertical rib shaping groove inwards set up and horizontal rib shaping groove and vertical rib shaping groove both ends all run through the shaping surface down.
In the injection mold for the metal insert of the mounting hole of the backing plate of the electric vehicle trunk, the transverse rib forming grooves and the longitudinal rib forming grooves are perpendicular to each other.
In foretell electric motor car boot backing plate mounting hole metal insert injection mould, lower bolster downside still be equipped with the bottom plate, the bottom plate on be equipped with the thimble fixed plate that can follow vertical direction lift, the thimble fixed plate on be equipped with the ejecting structure No. one that links to each other with the product main part and the ejecting structure No. two that links to each other with the cell body.
In foretell electric motor car boot backing plate mounting hole metal insert injection mould, ejection structure include a plurality of thimbles that set up along lower shaping face circumference and a plurality of thimbles that set up along thing groove shaping portion outside circumference under a plurality of, No. one thimble and No. two thimble bottoms link firmly with the thimble fixed plate, No. one thimble and No. two thimbles and horizontal rib shaping groove and vertical rib shaping groove dislocation set.
In the injection mold for the metal insert of the mounting hole of the backing plate of the electric vehicle trunk, the second ejection structure comprises a plurality of ejector rods arranged along the circumferential direction of the lower object groove forming part, the joint of the ejector rods and the lower object groove forming part is positioned in the groove body, and the diameter of each ejector rod is larger than the inner diameter of the corresponding drain hole forming rod.
Compared with the prior art, the utility model has the advantages that:
1. go up the shaping chamber that shaping face and lower shaping face combination formed and can injection moulding electric motor car boot backing plate, lower thing groove shaping portion and the cooperation of last thing groove shaping portion can make up out two inside sunken thing grooves of putting on the backing plate, thereby strengthening rib shaping structure can go out the intensity that a plurality of strengthening ribs can increase the backing plate at backing plate downside injection moulding, adjustable mounting hole shaping structure can be on the backing plate injection moulding go out the mounting hole and can adjust the aperture of injection moulding's mounting hole according to actual demand.
2. Mounting hole shaping pole cooperation metal insert and metal insert top support with overhead thing groove shaping portion and lean on and to lean on can injection moulding out the mounting hole on the backing plate, and consequently can replace looks adaptation metal insert according to the size in actual mounting hole aperture before moulding plastics on the mounting hole shaping pole is established to metal insert detachable cover, thereby the locating lever can insert to the metal insert in can fix a position when moulding plastics.
3. The drain hole forming structure can drain water to the lower side of the base plate when the water enters the electric vehicle tail box, so that articles on the base plate are prevented from being flooded, and the reinforcing rib forming structure can also enable water entering the tail box to be located on the lower side of the base plate.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
FIG. 1 is an external structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic structural view of an upper die plate;
fig. 4 is a schematic structural view of the lower template.
In the figure: the device comprises an upper template 1, a lower template 2, an upper forming surface 3, a lower forming surface 4, a forming cavity 5, a lower storage tank forming part 6, an upper storage tank forming part 7, a reinforcing rib forming structure 8, an adjustable mounting hole forming structure 9, a mounting hole forming rod 10, a metal insert 11, a positioning rod 12, a rectangular block 13, a groove body 14, a drain hole forming structure 15, a drain hole forming rod 16, a transverse rib forming groove 17, a longitudinal rib forming groove 18, a bottom plate 19, a thimble fixing plate 20, a first ejection structure 21, a second ejection structure 22, a first thimble 23, a second thimble 24 and a push rod 25.
Detailed Description
As shown in fig. 1-4, an electric motor car boot backing plate mounting hole metal insert injection mould, includes cope match-plate pattern 1 and lower bolster 2, cope match-plate pattern 1 and lower bolster 2 on be equipped with shaping face 3 and shaping face 4 down respectively, last shaping face 3 and shaping face 4 combination form become die cavity 5 down, shaping face 4 down on be equipped with two inside sunken thing groove shaping portions 6 down, last shaping face 3 on be equipped with two outside salient and with the thing groove shaping portion 6 looks adaptation of putting on put thing groove shaping portion 7, shaping face 4 down on still be equipped with strengthening rib forming structure 8, thing groove shaping portion 6 down on still be equipped with adjustable mounting hole forming structure 9.
In this embodiment, go up the shaping chamber 5 that shaping face 3 and 4 combination of shaping face down formed and can injection moulding electric motor car boot backing plate, lower thing groove shaping portion 6 and the cooperation of last thing groove shaping portion 7 can be formed out two inside sunken thing grooves of putting on the backing plate, thereby strengthening rib forming structure 8 can go out the intensity that a plurality of strengthening ribs can increase the backing plate at backing plate downside injection moulding, adjustable mounting hole forming structure 9 can be on the backing plate injection moulding go out the mounting hole and can adjust the aperture of injection moulding's mounting hole according to actual demand.
Specifically, as shown in fig. 2 to 4, the adjustable mounting hole forming structure 9 includes two mounting hole forming rods 10 disposed on the lower object receiving groove forming portion 6, a metal insert 11 having an annular cross section is detachably sleeved on the mounting hole forming rods 10, the top of the metal insert 11 is higher than the mounting hole forming rods 10 and abuts against the upper object receiving groove forming portion 7, and a positioning rod 12 inserted into the metal insert 11 is further disposed on the upper object receiving groove forming portion 7. Mounting hole shaping pole 10 cooperation metal insert 11 and metal insert 11 top and last thing groove shaping portion 7 support to lean on and to lean on can injection moulding go out the mounting hole on the backing plate, and metal insert 11 detachable cover is established and is established consequently can be according to the size replacement looks adaptation metal insert 11 in actual mounting hole aperture before moulding plastics on mounting hole shaping pole 10, thereby the locating lever can insert to the metal insert in can fix a position when moulding plastics.
Specifically, as shown in fig. 2 to 4, the upper storage tank forming portion 7 is formed by combining a plurality of rectangular blocks 13 distributed in a rectangular array, each rectangular block 13 can form an inwardly recessed tank 14 on the top of an injection molded product, and the plurality of tank 14 are combined to form a grid-type tank structure. The groove body in the grid groove body structure can increase the receptivity of the backing plate.
Preferably, as shown in fig. 2 to 4, the upper storage tank forming part 7 is further provided with a drainage hole forming structure 15. The drain hole forming structure 15 can drain water to the lower side of the base plate when water enters the electric vehicle tail box, so that articles on the base plate are prevented from being flooded, and the reinforcing rib forming structure 8 can also enable water entering the tail box to be located on the lower side of the base plate.
Specifically, as shown in fig. 2 to 4, the drain hole forming structure 15 includes a drain hole forming rod 16 disposed at the top of the partially rectangular block 13, and the bottom of the drain hole forming rod 16 abuts against the lower gutter forming portion 6. The bottom of the drain hole forming rod 16 abuts against the lower object groove forming part 6, so that a drain hole penetrating through the cushion plate can be formed at the bottom of the groove body during injection molding, and therefore, objects on the cushion plate are prevented from being flooded.
Specifically, as shown in fig. 2 to 4, the rib forming structure 8 includes a plurality of transverse rib forming grooves 17 and longitudinal rib forming grooves 18 disposed on the lower forming surface 4, the transverse rib forming grooves 17 and the longitudinal rib forming grooves 18 are disposed inward, and both ends of the transverse rib forming grooves 17 and the longitudinal rib forming grooves 18 penetrate through the lower forming surface 4. The transverse rib forming grooves 17 and the longitudinal rib forming grooves 18 are perpendicular to each other. The transverse rib forming grooves 17 and the longitudinal rib forming grooves 18 can form a plurality of transverse or longitudinal reinforcing ribs on the lower side of the base plate through injection molding, the reinforcing ribs can improve the overall strength of the base plate, and the reinforcing ribs can also play a certain damping role.
Specifically, as shown in fig. 2 to 4, a bottom plate 19 is further disposed on the lower side of the lower mold plate 2, an ejector pin fixing plate 20 capable of lifting along the vertical direction is disposed on the bottom plate 19, and a first ejection structure 21 connected to the product main body and a second ejection structure 22 connected to the groove body 14 are disposed on the ejector pin fixing plate 20. The ejector pin fixing plate 20 is externally connected with a driving mechanism, the driving mechanism can drive the ejector pin fixing rod to lift along the vertical direction, the ejector pin fixing rod can lift along the vertical direction to eject a product through the first ejection structure 21 and the second ejection structure 22, and the first ejection structure and the second ejection structure can prevent the product from being damaged by being ejected when the product is demoulded.
Specifically, as shown in fig. 2 to fig. 4, the first ejection structure 21 includes a plurality of first ejector pins 23 arranged along the circumferential direction of the lower molding surface 4 and a plurality of second ejector pins 24 arranged along the circumferential direction of the outer side of the lower material accommodating groove molding portion 6, bottoms of the first ejector pins 23 and the second ejector pins 24 are fixedly connected to the ejector pin fixing plate 20, and the first ejector pins 23 and the second ejector pins 24 are arranged in a staggered manner with the transverse rib molding grooves 17 and the longitudinal rib molding grooves 18. The second ejection structure 22 comprises a plurality of ejector rods 25 arranged along the circumferential direction of the lower object groove forming part 6, the joint of the ejector rods 25 and the lower object groove forming part 6 is positioned in the groove body 14, and the diameter of each ejector rod 25 is larger than the inner diameter of the drain hole forming rod 16. When the thimble fixing plate 20 moves upwards, the product can be ejected without damage through the plurality of first thimbles 23, second thimbles 24 and the ejector rods 25, and the diameter of the ejector rods 25 is larger than the inner diameter of the drain hole forming rod 16, so that the ejector rods can apply pressure to the product from the bottom of the groove body.
The working principle of the utility model is as follows: the forming cavity 5 formed by combining the upper forming surface 3 and the lower forming surface 4 can be used for injection molding of an electric vehicle trunk base plate, the lower object placing groove forming part 6 and the upper object placing groove forming part 7 are matched to form two inwards-concave object placing grooves on the base plate, the reinforcing rib forming structure 8 can be used for injection molding of a plurality of reinforcing ribs on the lower side of the base plate so as to increase the strength of the base plate, and the adjustable mounting hole forming structure 9 can be used for injection molding of mounting holes on the base plate and can adjust the aperture of the injection molded mounting holes according to actual requirements;
the mounting hole forming rod 10 is matched with the metal insert 11, the top of the metal insert 11 is abutted against the upper article placing groove forming part 7, a mounting hole can be formed in the base plate through injection molding, the metal insert 11 is detachably sleeved on the mounting hole forming rod 10, so that the metal insert 11 can be matched with the mounting hole in a replacement mode according to the size of the aperture of the actual mounting hole before injection molding, a positioning rod can be inserted into the metal insert during injection molding so as to be positioned during injection molding, and the groove body in the grid groove body structure can improve the retractility of the base plate;
the drain hole forming structure 15 can drain water to the lower side of the base plate when water enters the electric vehicle tail box, so that articles on the base plate are prevented from being flooded, the reinforcing rib forming structure 8 can enable water entering the tail box to be located on the lower side of the base plate, the bottom of the drain hole forming rod 16 is abutted against the lower article groove forming part 6, so that a drain hole penetrating through the base plate can be formed at the bottom of the base plate during injection molding, so that the articles on the base plate are prevented from being flooded, the transverse rib forming grooves 17 and the longitudinal rib forming grooves 18 can form a plurality of transverse or longitudinal reinforcing ribs on the lower side of the base plate in an injection molding manner, the reinforcing ribs can improve the overall strength of the base plate, and can play a certain damping role, the thimble fixing plate 20 is externally connected with a driving mechanism, the driving mechanism can drive the thimble fixing rod to lift along the vertical direction, the thimble fixing rod can lift along the vertical direction and can eject the products through the first ejection structure 21 and the second ejection structure 22, the first ejection structure and the second ejection structure can prevent a product from being damaged by ejection when the product is demoulded, the product can be ejected without damage through the multiple first ejector pins 23, the second ejector pins 24 and the ejector rods 25 when the ejector pin fixing plate 20 moves upwards, and the diameter of the ejector rods 25 is larger than the inner diameter of the drain hole forming rod 16, so that the ejector rods can apply pressure to the product from the bottom of the groove body.
The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
Although the upper mold plate 1, the lower mold plate 2, the upper molding surface 3, the lower molding surface 4, the molding cavity 5, the lower housing groove molding part 6, the upper housing groove molding part 7, the reinforcing rib molding structure 8, the adjustable housing hole molding structure 9, the housing hole molding rod 10, the metal insert 11, the positioning rod 12, the rectangular block 13, the groove body 14, the drain hole molding structure 15, the drain hole molding rod 16, the transverse rib molding groove 17, the longitudinal rib molding groove 18, the bottom plate 19, the ejector pin fixing plate 20, the first ejector structure 21, the second ejector structure 22, the first ejector pin 23, the second ejector pin 24, the ejector pin 25, etc., are used more frequently herein, these terms are merely used to more conveniently describe and explain the essence of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. The utility model provides an electric motor car boot backing plate mounting hole metal insert injection mould, includes cope match-plate pattern (1) and lower bolster (2), its characterized in that, cope match-plate pattern (1) and lower bolster (2) on be equipped with forming surface (3) and lower forming surface (4) respectively, last forming surface (3) and lower forming surface (4) combination form one-tenth die cavity (5), lower forming surface (4) on be equipped with two inside sunken thing groove shaping portions (6) of putting down, last forming surface (3) on be equipped with two outside protrusions and with put thing groove shaping portion (6) looks adaptation under and put thing groove shaping portion (7), lower forming surface (4) on still be equipped with strengthening rib shaping structure (8), put thing groove shaping portion (6) under on still be equipped with adjustable mounting hole shaping structure (9).
2. The injection mold for the metal insert of the mounting hole of the padding plate of the tail box of the electric vehicle as claimed in claim 1, wherein the adjustable mounting hole forming structure (9) comprises two mounting hole forming rods (10) arranged on the lower object containing groove forming part (6), the metal insert (11) with an annular cross section is detachably sleeved on each mounting hole forming rod (10), the top of each metal insert (11) is higher than the corresponding mounting hole forming rod (10) and abuts against the upper object containing groove forming part (7), and a positioning rod (12) inserted into the metal insert (11) is further arranged on the upper object containing groove forming part (7).
3. The injection mold for the metal insert of the cushion plate mounting hole of the electric vehicle trunk according to claim 2, wherein the upper storage groove forming part (7) is formed by combining a plurality of rectangular blocks (13) distributed in a rectangular array, each rectangular block (13) can form an inward-concave groove body (14) at the top of an injection-molded product, and the groove bodies (14) are combined to form a grid-type groove body structure.
4. The injection mold for the metal insert of the mounting hole of the backing plate of the electric vehicle trunk according to claim 3, wherein the upper storage groove forming part (7) is further provided with a drainage hole forming structure (15).
5. The injection mold for the metal insert of the mounting hole of the backing plate of the electric vehicle trunk is characterized in that the drain hole forming structure (15) comprises a drain hole forming rod (16) arranged at the top of the partial rectangular block (13), and the bottom of the drain hole forming rod (16) is abutted with the lower storage groove forming part (6).
6. The injection mold for the metal insert of the mounting hole of the liner plate of the tail box of the electric vehicle as claimed in claim 5, wherein the reinforcing rib forming structure (8) comprises a plurality of transverse rib forming grooves (17) and longitudinal rib forming grooves (18) which are arranged on the lower forming surface (4), the transverse rib forming grooves (17) and the longitudinal rib forming grooves (18) are arranged inwards, and both ends of the transverse rib forming grooves (17) and the longitudinal rib forming grooves (18) penetrate through the lower forming surface (4).
7. The injection mold for metal insert of mounting hole of electric vehicle trunk plate according to claim 6, wherein the transverse rib forming grooves (17) and the longitudinal rib forming grooves (18) are perpendicular to each other.
8. The injection mold for the metal insert of the cushion plate mounting hole of the tail box of the electric vehicle as claimed in claim 6, wherein a bottom plate (19) is further arranged on the lower side of the lower template (2), a thimble fixing plate (20) capable of lifting along the vertical direction is arranged on the bottom plate (19), and a first ejection structure (21) connected with a product main body and a second ejection structure (22) connected with the groove body (14) are arranged on the thimble fixing plate (20).
9. The electric vehicle trunk base plate mounting hole metal insert injection mold according to claim 8, characterized in that the first ejection structure (21) comprises a plurality of first ejector pins (23) arranged along the circumferential direction of the lower molding surface (4) and a plurality of second ejector pins (24) arranged along the circumferential direction of the outer side of the lower article holding groove molding portion (6), the bottoms of the first ejector pins (23) and the second ejector pins (24) are fixedly connected with the ejector pin fixing plate (20), and the first ejector pins (23) and the second ejector pins (24) are arranged in a staggered manner with the transverse rib molding grooves (17) and the longitudinal rib molding grooves (18).
10. The injection mold for the metal insert of the cushion plate mounting hole of the electric vehicle trunk is characterized in that the second ejection structure (22) comprises a plurality of ejector rods (25) arranged along the circumferential direction of the lower object groove forming part (6), the joint of the ejector rods (25) and the lower object groove forming part (6) is positioned in the groove body (14), and the diameter of the ejector rods (25) is larger than the inner diameter of the drain hole forming rod (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121577266.4U CN216001202U (en) | 2021-07-12 | 2021-07-12 | Injection mould for metal insert of backing plate mounting hole of electric vehicle tail box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121577266.4U CN216001202U (en) | 2021-07-12 | 2021-07-12 | Injection mould for metal insert of backing plate mounting hole of electric vehicle tail box |
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| Publication Number | Publication Date |
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| CN216001202U true CN216001202U (en) | 2022-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121577266.4U Active CN216001202U (en) | 2021-07-12 | 2021-07-12 | Injection mould for metal insert of backing plate mounting hole of electric vehicle tail box |
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| CN (1) | CN216001202U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115157521A (en) * | 2022-07-19 | 2022-10-11 | 东莞万德电子制品有限公司 | Preparation process of double-side-coated low-temperature silica gel for PC rack and PC rack |
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2021
- 2021-07-12 CN CN202121577266.4U patent/CN216001202U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115157521A (en) * | 2022-07-19 | 2022-10-11 | 东莞万德电子制品有限公司 | Preparation process of double-side-coated low-temperature silica gel for PC rack and PC rack |
| CN115157521B (en) * | 2022-07-19 | 2023-10-24 | 东莞万德电子制品有限公司 | Preparation process of double-sided low-temperature silica gel bag of PC frame and PC frame |
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