Mould for producing wheat-straw mobile phone shell

Abstract

The utility model discloses a wheat straw mobile phone shell production die which comprises an upper die plate and a lower die plate, the upper die plate and the lower die plate are connected through a guide column and a guide sleeve, a forming cavity is formed in the upper surface of the upper die plate, a forming male die is detachably installed on the bottom face of the upper die plate, a separating plate is movably arranged on the inner side of the forming cavity, and the separating plate is connected with the lower die plate. A magnetic column is fixed to the middle of the bottom face of the separating plate, an electromagnet is fixed in the lower die plate and connected with the separating plate in a magnetic attraction mode, and the outer side of the magnetic column is sleeved with a separating spring. According to the utility model, after the production of the mobile phone shell is finished, the power supply of the electromagnet is cut off, the separation spring applies upward thrust to the separation plate, and the molded mobile phone shell is separated from the molding cavity through the separation plate, so that the molded mobile phone shell does not need to be manually demolded, and only the mobile phone shell needs to be directly taken out, the intermediate operation time is shortened, and the production efficiency is improved. And the working efficiency of workers and the production efficiency of the mobile phone shells are improved.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone case production mold technology, specifically a straw mobile phone case production mold. Background Technology

[0002] Phone cases are decorative items used to protect or decorate the appearance of mobile phones. They have diversified with the increasing number of mobile phone brands and functions. Phone cases can be categorized by material, including PC cases, leather, silicone, fabric, hard plastic, leather cases, tempered glass metal cases, soft plastic, velvet, and silk. Straw phone cases are a type of phone case made from plant fiber materials such as wheat straw. They are environmentally friendly, durable, and aesthetically pleasing. Straw phone cases are typically made from recycled wheat straw through processes such as tearing, decomposition, pulping, and shaping. They are typically produced using injection molding equipment; the injection molding equipment used to produce phone cases is collectively referred to as phone case production molds.

[0003] However, after injection molding, the straw phone case requires manual demolding, which is slow and affects the production efficiency. Therefore, it does not meet the current needs. To address this, we have proposed a straw phone case production mold. Utility Model Content

[0004] The purpose of this utility model is to provide a straw-based mobile phone case production mold to solve the problems mentioned in the background art, such as the need for manual demolding of the produced straw-based mobile phone cases after injection molding, which is slow and affects the production efficiency of straw-based mobile phone cases.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a straw-based mobile phone case production mold, comprising an upper template and a lower template, the upper template and the lower template being connected by guide pillars and guide sleeves, the upper surface of the upper template being provided with a forming cavity, the bottom surface of the upper template being detachably mounted with a forming punch, a separation plate being movably provided inside the forming cavity, a magnetic column being fixed in the middle of the bottom surface of the separation plate, an electromagnet being fixed inside the lower template, the electromagnet being magnetically attracted to the separation plate, a separation spring being sleeved on the outside of the magnetic column, the separation spring being located between the separation plate and the upper template and surrounding the outside of the electromagnet.

[0006] Preferably, a sealing gasket is provided below the separation plate, and the sealing gasket is fixed to the separation plate with adhesive.

[0007] Preferably, the bottom surface of the separation plate is also fixed with multiple sets of symmetrical guide rods, the bottom ends of which pass through the sealing gasket and are slidably connected to the lower template.

[0008] Preferably, a resin guide groove is provided around the molding cavity, and each of the four sides of the resin guide groove is provided with a drain port, which extends to the side of the lower template.

[0009] Preferably, the magnetic attraction force of the electromagnet to the magnetic column is greater than the elastic force of the separation spring, and the elastic force of the separation spring is greater than the total weight of the separation plate, the magnetic column, the guide rod, and the molded straw phone case.

[0010] Preferably, the surface of the upper template is provided with two symmetrically distributed stepped holes, the stepped holes penetrate the upper template and fastening screws are movably inserted into the inner side, the upper surface of the forming punch is provided with two symmetrically distributed screw holes, the axis of the screw holes coincides with the axis of the stepped holes, and the bottom end of the fastening screw is screwed into the screw hole through a thread.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. After the phone case is produced, the power supply of the electromagnet is disconnected, and the separation spring applies an upward pushing force to the separation plate. The formed phone case is separated from the molding cavity through the separation plate. There is no need for manual demolding of the formed phone case. The phone case can be directly taken out, which shortens the intermediate operation time and improves the work efficiency of the staff and the production efficiency of the phone case.

[0013] 2. In this invention, after the mold is closed, the electromagnet is energized and magnetically attracts the magnetic column, causing the magnetic column to move the separation plate downward, so that the upper surface of the separation plate is flush with the bottom surface of the molding cavity, ensuring that the separation plate does not contact the molding punch, and ensuring that the mobile phone case is formed smoothly. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is an exploded view of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the lower template of this utility model;

[0017] Figure 4 This is a cross-sectional view of the lower template of this utility model.

[0018] In the diagram: 1. Upper template; 2. Lower template; 3. Forming punch; 4. Forming cavity; 5. Resin guide channel; 6. Screw hole; 7. Step hole; 8. Fastening screw; 9. Separation plate; 10. Magnetic column; 11. Electromagnet; 12. Separation spring; 13. Guide rod; 14. Sealing gasket. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] like Figures 1 to 4 As shown, a straw-based mobile phone case production mold includes an upper template 1 and a lower template 2. The upper template 1 and the lower template 2 are connected by guide pillars and guide sleeves. The upper surface of the upper template 1 is provided with a molding cavity 4. A resin guide channel 5 is provided around the molding cavity 4. Each of the four sides of the resin guide channel 5 is provided with a flow outlet, which extends to the side of the lower template 2. The resin guide channel 5 collects the raw material extruded between the molding punch 3 and the molding cavity 4 after the upper template 1 and the lower template 2 are closed, thus avoiding waste caused by excessive raw material in the molding cavity 4 being extruded.

[0021] A forming punch 3 is detachably installed on the bottom surface of the upper template 1. A separation plate 9 is movably provided inside the forming cavity 4. A magnetic column 10 is fixed in the middle of the bottom surface of the separation plate 9. An electromagnet 11 is fixed inside the lower template 2. The electromagnet 11 and the separation plate 9 are magnetically attracted to each other. A separation spring 12 is sleeved on the outside of the magnetic column 10. The separation spring 12 is located between the separation plate 9 and the upper template 1 and surrounds the outside of the electromagnet 11. The electromagnet 11 magnetically attracts the magnetic column 10 to ensure that the separation plate 9 is tightly attached to the bottom surface of the forming cavity 4, ensuring that the straw phone case is formed smoothly. After the electromagnet 11 disconnects from the magnetic attraction of the magnetic column 10, the separation spring 12 elastically returns to its original state and pushes the separation plate 9 upward, realizing the separation of the formed straw phone case from the lower template 2, making it convenient for staff to pick up the straw phone case.

[0022] The upper template 1 has two symmetrically distributed stepped holes 7 on its surface. The stepped holes 7 penetrate the upper template 1 and are movably inserted with fastening screws 8 on their inner sides. The upper surface of the forming punch 3 has two symmetrically distributed screw holes 6. The axis of the screw holes 6 coincides with the axis of the stepped holes 7, and the bottom end of the fastening screw 8 is screwed into the screw hole 6 through the thread. The forming punch 3 and the upper template 1 are assembled through the screw holes 6, the stepped holes 7, and the fastening screws 8. The forming punch 3 can be replaced after the fastening screws 8 are removed.

[0023] A sealing gasket 14 is provided below the separation plate 9. The sealing gasket 14 is fixed to the separation plate 9 with adhesive. The sealing gasket 14 fills the gap between the separation plate 9 and the lower template 2, ensuring that the raw materials used for forming the straw mobile phone case do not enter the gap between the separation plate 9 and the lower template 2, thus ensuring the surface quality of the formed straw mobile phone case.

[0024] The bottom surface of the separation plate 9 is also fixed with multiple sets of symmetrical guide rods 13. The bottom end of the guide rod 13 passes through the sealing gasket 14 and is slidably connected to the lower template 2. The guide rod 13 supports and guides the separation plate 9 to ensure that the separation plate 9 will not tilt when it moves up and down.

[0025] The magnetic attraction force of the electromagnet 11 to the magnetic column 10 is greater than the elastic force of the separation spring 12. The elastic force of the separation spring 12 is greater than the total weight of the separation plate 9, the magnetic column 10, the guide rod 13, and the molded straw phone case. This ensures that after the magnetic attraction force of the electromagnet 11 to the magnetic column 10 is reduced, the separation spring 12 can smoothly lift the separation plate 9 and the molded straw phone case, thus successfully demolding the straw phone case.

[0026] Working principle: First, the power supply to the electromagnet 11 is turned on and started. The electromagnet 11 attracts the magnetic column 10, causing the separation plate 9 to move downwards until the upper surface of the separation plate 9 is flush with the bottom surface of the molding cavity 4. At this time, the separation spring 12 is compressed. Then, the operator injects the raw material for the straw phone case into the molding cavity 4. Subsequently, the mold drive mechanism is started and drives the upper template 1 to move closer to the lower template 2 until the upper template 1 and the lower template 2 are in contact. At this time, the molding punch 3 enters the molding cavity 4 and expels the excess material from the molding cavity 4. The extruded excess material enters the resin guide groove 5, etc. After the raw material between the forming punch 3 and the forming cavity 4 cools down, a straw phone case is formed. At this time, the upper template 1 and the lower template 2 are separated. After the upper template 1 is separated, the electromagnet 11 is disconnected from the power supply, the magnetic column 10 loses the magnetic attraction of the electromagnet 11, and the separation spring 12 elastically returns to its original state and pushes the separation plate 9 upward. The separation plate 9, after being pushed up, drives the formed straw phone case to move upward, so that the straw phone case separates from the forming cavity 4, completing the demolding of the straw phone case. The staff only needs to take out the demolded straw phone case directly, which shortens the intermediate operation time and improves the work efficiency of the staff and the production efficiency of the phone case.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mold for producing a straw-shaped mobile phone case, comprising an upper mold plate (1) and a lower mold plate (2), wherein the upper mold plate (1) and the lower mold plate (2) are connected by guide posts and guide sleeves, characterized in that: The upper surface of the upper template (1) is provided with a forming cavity (4). A forming punch (3) is detachably installed on the bottom surface of the upper template (1). A separation plate (9) is movably provided on the inner side of the forming cavity (4). A magnetic column (10) is fixed in the middle of the bottom surface of the separation plate (9). An electromagnet (11) is fixed inside the lower template (2). The electromagnet (11) and the separation plate (9) are magnetically attracted to each other. A separation spring (12) is sleeved on the outer side of the magnetic column (10). The separation spring (12) is located between the separation plate (9) and the upper template (1) and surrounds the outer side of the electromagnet (11).

2. The straw-based mobile phone case production mold according to claim 1, characterized in that: A sealing gasket (14) is provided below the separation plate (9), and the sealing gasket (14) is fixed to the separation plate (9) with adhesive.

3. The straw-based mobile phone case production mold according to claim 2, characterized in that: The bottom surface of the separation plate (9) is also fixed with a number of pairs of symmetrical guide rods (13), the bottom end of which passes through the sealing gasket (14) and is slidably connected to the lower template (2).

4. The straw-based mobile phone case production mold according to claim 1, characterized in that: The molding cavity (4) is surrounded by a resin guide groove (5), and each of the four sides of the resin guide groove (5) is provided with a drain port, which extends to the side of the lower template (2).

5. The straw-based mobile phone case production mold according to claim 3, characterized in that: The magnetic attraction force of the electromagnet (11) to the magnetic column (10) is greater than the elastic force of the separation spring (12), and the elastic force of the separation spring (12) is greater than the total weight of the separation plate (9), the magnetic column (10), the guide rod (13), and the molded straw mobile phone case.

6. The straw-based mobile phone case production mold according to claim 1, characterized in that: The upper template (1) has two symmetrically distributed stepped holes (7) on its surface. The stepped holes (7) penetrate the upper template (1) and are movably inserted with fastening screws (8) on their inner sides. The upper surface of the forming punch (3) has two symmetrically distributed screw holes (6). The axis of the screw holes (6) coincides with the axis of the stepped holes (7), and the bottom end of the fastening screws (8) is screwed into the screw holes (6) through threads.

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