Plastic mobile phone rear cover injection mold

Abstract

The utility model relates to the technical field of plastic mobile phone rear cover injection molding, and discloses a plastic mobile phone rear cover injection mold which comprises a mold main body, an injection molding opening, a processing assembly and an ejection mechanism, the ejection mechanism comprises a hydraulic cylinder arranged at the bottom of the mold main body, and the working end of the hydraulic cylinder is fixedly connected with an adjusting plate; evenly-distributed spring seats are arranged at the upper end of the adjusting plate, ejector rods are fixedly installed at the upper ends of the spring seats, first springs are connected to the outer sides of the ejector rods in a sleeving mode, and protective pads are fixedly connected to the upper ends of the ejector rods. The adjusting plate is pushed through the hydraulic cylinder, then the adjusting rod is driven to slide on the adjusting plate and compress the second spring, then the ejector rod is pushed to compress the first spring, then the protective pad is pushed, the mobile phone rear cover subjected to injection molding is pushed out, and then the adjusting mechanism is used in cooperation. And before the ejection mechanism works, the convex block is contracted into the lower mold, so that the rear cover of the mobile phone can be pushed out more conveniently.

Description

Technical Field

[0001] This utility model relates to the field of plastic mobile phone back cover injection molding technology, specifically a plastic mobile phone back cover injection mold. Background Technology

[0002] A plastic mobile phone back cover injection mold refers to a mold used to process mobile phone back covers. It primarily uses an injection molding machine to inject molten plastic into the mold cavity to form the back cover. However, existing plastic mobile phone back cover injection molds have the following technical defects: After the back cover is injection molded, removal is mainly done by ejecting it with an ejector rod or manually. This is cumbersome, and using an ejector rod can easily damage the back cover. Manual removal is inefficient and increases the workload of workers. Furthermore, during demolding, the lens hole on the back cover tends to stick to the edge of the lower mold insert, making demolding difficult and causing inconvenience in daily use. Utility Model Content

[0003] The purpose of this utility model is to provide a plastic mobile phone back cover injection mold to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a plastic mobile phone back cover injection mold, comprising a mold body, an injection port at the upper end of the mold body, a processing component inside the mold body, and an ejection mechanism fixedly connected to the bottom of the processing component, wherein:

[0005] The ejection mechanism includes a hydraulic cylinder located at the bottom of the mold body. An adjusting plate is fixedly connected to the working end of the hydraulic cylinder. A spring seat is evenly distributed at the upper end of the adjusting plate. An ejection rod is fixedly installed at the upper end of the spring seat. A first spring is sleeved on the outside of the ejection rod. A protective pad is fixedly connected to the upper end of the ejection rod.

[0006] Furthermore, the ejection mechanism also includes an adjusting rod that is fixedly mounted and slidably mounted on the upper end of the adjusting plate, and a second spring is sleeved on the outer side of the adjusting rod.

[0007] Furthermore, the adjusting rods are evenly distributed on the upper end of the adjusting plate, the bottom end of the first spring is fixedly installed on the upper end of the spring seat, and the protective pad is located inside the processing assembly.

[0008] Furthermore, the mold body includes an adjustable upper mold and a fixed lower mold. The bottom end of the adjustable upper mold is provided with evenly distributed positioning holes, and the upper end of the fixed lower mold is fixedly equipped with evenly distributed positioning rods, the positioning rods corresponding to the positioning holes.

[0009] Furthermore, the processing assembly includes an upper mold fixedly installed at the bottom of the adjusting upper mold, a lower mold fixedly installed at the top of the fixed lower mold, and an injection pipe that is connected to the upper mold through the injection port.

[0010] Furthermore, the mold body is provided with an adjustment mechanism, which includes a cylinder push rod located at the bottom of the lower mold. A connecting plate is fixedly connected to the upper end of the cylinder push rod, and a protrusion is fixedly connected to the working end of the cylinder push rod. A guide rod is fixedly installed at the bottom end of the protrusion, and the other end of the guide rod extends through to the bottom end of the connecting plate.

[0011] Furthermore, cooling components are symmetrically arranged inside the mold body, and the cooling components are respectively located at the top of the upper mold and the bottom of the lower mold. The upper end of the fixed lower mold has evenly distributed venting grooves about the lower mold.

[0012] Furthermore, the protective pad is made of silicone rubber, which has good anti-stick and heat resistance.

[0013] Compared with the prior art, this utility model provides a plastic mobile phone back cover injection mold, which has the following beneficial effects:

[0014] This plastic mobile phone back cover injection mold uses a hydraulic cylinder to push an adjusting plate, which in turn drives an adjusting rod to slide on the adjusting plate and compress a second spring. Then, by pushing an ejector rod, the first spring is compressed, which in turn pushes a protective pad to eject the injection-molded mobile phone back cover. The protective pad protects the mobile phone back cover from scratches during ejection. With the cooperation of the adjusting mechanism, the protrusion is retracted into the lower mold before the ejection mechanism works, making it easier to eject the mobile phone back cover. This solves the problem of the mobile phone back cover being difficult to eject after injection molding, thus achieving the effect of not easily damaging the mobile phone back cover. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of the mold of this utility model;

[0017] Figure 3 This is a partial sectional view of the adjusting upper mold of this utility model;

[0018] Figure 4 This is a partial sectional view of the fixed lower mold of this utility model;

[0019] Figure 5 This is a schematic diagram of the ejection mechanism of this utility model;

[0020] Figure 6 This is a partial sectional view of the lower mold of this utility model;

[0021] Figure 7 This is a schematic diagram of the adjustment mechanism of this utility model.

[0022] In the diagram: 1. Mold body; 11. Adjusting upper mold; 12. Fixing lower mold; 13. Positioning hole; 14. Positioning rod; 2. Injection port; 3. Injection pipe; 4. Processing components; 41. Upper mold; 42. Lower mold; 5. Ejection mechanism; 51. Hydraulic cylinder; 52. Adjusting plate; 53. Spring seat; 54. Push rod; 55. First spring; 56. Protective pad; 57. Adjusting rod; 58. Second spring; 6. Adjusting mechanism; 61. Cylinder push rod; 62. Connecting plate; 63. Protrusion; 64. Guide rod; 7. Cooling components; 8. Exhaust groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0024] Please see Figure 1 - Figure 7 A plastic mobile phone back cover injection mold includes a mold body 1, an injection port 2 at the upper end of the mold body 1, a processing component 4 inside the mold body 1, and an ejection mechanism 5 fixedly connected to the bottom of the processing component 4, wherein:

[0025] The ejection mechanism 5 includes a hydraulic cylinder 51 located at the bottom of the mold body 1. An adjusting plate 52 is fixedly connected to the working end of the hydraulic cylinder 51. A spring seat 53 is evenly distributed on the upper end of the adjusting plate 52. An ejection rod 54 is fixedly installed on the upper end of the spring seat 53. A first spring 55 is sleeved on the outside of the ejection rod 54. A protective pad 56 is fixedly connected to the upper end of the ejection rod 54.

[0026] Furthermore, the ejection mechanism 5 also includes an adjusting rod 57 that is fixedly mounted and slidably mounted on the upper end of the adjusting plate 52. A second spring 58 is sleeved on the outside of the adjusting rod 57. The adjusting plate 52 is used to install the ejection rod 54 to cooperate with the protective pad 56 to push out the injection-molded mobile phone back cover. The second spring 58 buffers the ejection force of the hydraulic cylinder 51, and cooperates with the first spring 55 for secondary buffering, further reducing the force directly acting on the mobile phone back cover.

[0027] Furthermore, the adjusting rods 57 are evenly distributed on the upper end of the adjusting plate 52, the bottom end of the first spring 55 is fixedly installed on the upper end of the spring seat 53, the protective pad 56 is located inside the processing assembly 4, the spring seat 56 is used to install the first spring 55 and fix the first spring 55, and the adjusting rods 57 can slide inside the adjusting plate 52 under the push of the hydraulic cylinder 51.

[0028] Furthermore, the mold body 1 includes an adjustable upper mold 11 and a fixed lower mold 12. The adjustable upper mold 11 has evenly distributed positioning holes 13 at its bottom end. The fixed lower mold 12 has evenly distributed positioning rods 14 fixedly installed at its upper end. The positioning rods 14 correspond to the positioning holes 13. The adjustable upper mold 11 can be disengaged from the fixed lower mold 12 when the injection-molded mobile phone back cover needs to be removed. The positioning holes 13 and positioning rods 14 are used to make it easier for the adjustable upper mold 11 and the fixed lower mold 12 to engage when they are combined, and to prevent the internal processing components 4 from being misaligned.

[0029] Furthermore, the processing component 4 includes an upper mold 41 fixedly installed at the bottom of the adjusting upper mold 11, a lower mold 42 fixedly installed at the upper end of the fixed lower mold 12, and an injection pipe 3 that is connected to the upper mold 41 through the injection port 2. The injection port 2 is used to pour injection molding material and pours the injection molding material into the processing component 4 through the injection pipe 3.

[0030] Furthermore, the mold body 1 is provided with an adjustment mechanism 6. The adjustment mechanism 6 includes a cylinder push rod 61 provided at the bottom of the lower mold 42. A connecting plate 62 is fixedly connected to the upper end of the cylinder push rod 61. A protrusion 63 is fixedly connected to the working end of the cylinder push rod 61. A guide rod 64 is fixedly installed at the bottom end of the protrusion 63. The other end of the guide rod 64 extends through to the bottom end of the connecting plate 62. The cylinder push rod 61 is used to adjust the position of the protrusion 63 so that the back cover of the mobile phone can be removed from the lower mold 42.

[0031] Furthermore, the mold body 1 is symmetrically provided with cooling components 7, which are located at the top of the upper mold 41 and the bottom of the lower mold 42 respectively. The upper end of the fixed lower mold 12 is provided with evenly distributed venting grooves 8 about the lower mold 42. The cooling components 7 are used to cool the injection molding material poured into the processing component 4, and the venting grooves 8 are used to discharge excess gas generated inside the processing component 4.

[0032] Furthermore, the protective pad 56 is made of silicone rubber, which has good anti-stick properties and heat resistance.

[0033] The specific usage and function of this embodiment are as follows:

[0034] In use, the staff first inspects the injection mold and prepares the injection material. Then, molten plastic is injected into the injection port 2 through the injection molding machine and flows into the internal cavity of the processing component 4 set inside the mold body 1 through the injection pipe. The injection material flows into the injection cavity formed between the upper mold 41 and the lower mold 42 through the injection pipe 3 and is cooled by the cooling component 7. Then, with the help of the venting groove 8 set at the upper end of the fixed lower mold 12, the excess gas generated inside the processing component 4 is discharged from the mold body 1. After the injection material cools down, the mobile phone back cover is formed.

[0035] Furthermore, before the ejector mechanism 5 ejects the injection-molded back cover of the mobile phone, the position of the protrusion 63 is first adjusted by the adjustment mechanism 6 so that the ejector mechanism 5 can eject the back cover of the mobile phone. The cylinder push rod 61 is activated to drive the protrusion 63 to retract, and the guide rod 64 guides and stabilizes it, so that the protrusion 63 retracts into the lower mold 42 so that the back cover of the mobile phone can be demolded.

[0036] Furthermore, the hydraulic system drives the upper mold 11 to move and disengage from the fixed lower mold 12. Then, the positioning rod 14 disengages from the positioning hole 13, and the upper mold 41 separates from the lower mold 42. Then, the hydraulic cylinder 51 pushes the adjusting plate 52 to move longitudinally, thereby driving the adjusting rod 57 to compress the second spring 58 and slide inside the adjusting plate 52, which plays a primary buffering role. Then, the first spring 55 is compressed for buffering, and the ejector rod 54 is driven to push. Then, in conjunction with the protective pad 56, the injection-molded mobile phone back cover is pushed, so that the mobile phone back cover disengages from the lower mold 42.

[0037] Furthermore, the staff removes the phone back cover from the lower mold 42, and then uses the hydraulic system to drive the upper mold 11 to re-engage with the fixed lower mold 12. The upper mold 11 is guided by the positioning rod 14 and the positioning hole 13. After the mold body 1 is adjusted, the hydraulic cylinder 51 retracts, thereby causing the protective pad 56 to retract into the lower mold 42. Then, the cylinder push rod 61 pushes the protrusion 63 so that its upper end fits tightly with the bottom end of the upper mold 41. Then, the subsequent injection molding process of the phone back cover can be carried out.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic mobile phone back cover injection mold, comprising a mold body (1), wherein an injection port (2) is provided at the upper end of the mold body (1), and a processing component (4) is provided inside the mold body (1), characterized in that, The bottom of the processing component (4) is fixedly connected to an ejector mechanism (5), wherein: The ejection mechanism (5) includes a hydraulic cylinder (51) provided at the bottom of the mold body (1). An adjusting plate (52) is fixedly connected to the working end of the hydraulic cylinder (51). A spring seat (53) is evenly distributed on the upper end of the adjusting plate (52). An ejection rod (54) is fixedly installed on the upper end of the spring seat (53). A first spring (55) is sleeved on the outside of the ejection rod (54). A protective pad (56) is fixedly connected to the upper end of the ejection rod (54).

2. The injection mold for a plastic mobile phone back cover according to claim 1, characterized in that: The mold body (1) is provided with an adjustment mechanism (6). The adjustment mechanism (6) includes a cylinder push rod (61) provided at the bottom of the lower mold (42). A connecting plate (62) is fixedly connected to the upper end of the cylinder push rod (61), and a protrusion (63) is fixedly connected to the working end of the cylinder push rod (61). The ejection mechanism (5) further includes an adjusting rod (57) that is fixedly installed and slidably mounted on the upper end of the adjusting plate (52), and a second spring (58) is sleeved on the outside of the adjusting rod (57).

3. The injection mold for a plastic mobile phone back cover according to claim 2, characterized in that: The adjusting rods (57) are evenly distributed on the upper end of the adjusting plate (52), the bottom end of the first spring (55) is fixedly installed on the upper end of the spring seat (53), and the protective pad (56) is located inside the processing assembly (4).

4. The injection mold for a plastic mobile phone back cover according to claim 2, characterized in that: The mold body (1) includes an adjustable upper mold (11) and a fixed lower mold (12). The adjustable upper mold (11) has evenly distributed positioning holes (13) at its bottom end. The fixed lower mold (12) has evenly distributed positioning rods (14) fixedly installed at its upper end. The positioning rods (14) correspond to the positioning holes (13).

5. The injection mold for a plastic mobile phone back cover according to claim 4, characterized in that: The processing component (4) includes an upper mold (41) fixedly installed at the bottom of the adjusting upper mold (11), a lower mold (42) fixedly installed at the upper end of the fixed lower mold (12), and an injection pipe (3) that is connected to the upper mold (41) through the injection port (2).

6. The injection mold for a plastic mobile phone back cover according to claim 5, characterized in that: A guide rod (64) is fixedly installed at the bottom end of the protrusion (63), and the other end of the guide rod (64) extends through to the bottom end of the connecting plate (62).

7. The injection mold for a plastic mobile phone back cover according to claim 5, characterized in that: The mold body (1) is symmetrically provided with cooling components (7). The cooling components (7) are located at the top of the upper mold (41) and the bottom of the lower mold (42). The upper end of the fixed lower mold (12) is provided with evenly distributed exhaust grooves (8) about the lower mold (42).

8. The injection mold for a plastic mobile phone back cover according to claim 3, characterized in that: The protective pad (56) is made of silicone rubber.

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