Injection mold and precise injection molding process thereof

Abstract

The invention belongs to the technical field of injection molds, and provides an injection mold and a precise injection molding process thereof. An up-down adjusting plate; a diagonal adjusting plate; a push rod; and a telescoping mechanism. After a mobile phone shell is formed, the inner side of the mobile phone shell is buckled on a frame formed by the four diagonal adjusting plates, the two left-right adjusting plates and the two up-down adjusting plates, and by moving the four diagonal adjusting plates, the two left-right adjusting plates and the two up-down adjusting plates, the two left-right adjusting plates and the two up-down adjusting plates move in an inclined mode and draw close to each other; the four diagonal adjusting plates move obliquely and draw close to each other, so that the overall dimension of the frame is inwards shrunk and reduced compared with the size of an originally formed frame, inner buckle limitation of all positions of the inner side of the mobile phone shell is relieved, the mobile phone shell is completely and automatically demoulded, demoulding is completed without the help of external force, the mobile phone shell is not prone to deformation, and the production efficiency is improved. The damage to the formed mobile phone shell is reduced, so that the yield of the mobile phone shell is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molds, and in particular relates to an injection mold and a precision injection molding process thereof. Background Art

[0002] Mobile phone cases are external accessories used to protect and decorate mobile phones. Mobile phone cases can be divided into silicone cases, leather cases, plastic cases and metal cases according to different materials. Currently, the most popular cases on the market are silicone cases, which are die-casted by injection molds. The inner circle of existing silicone mobile phone cases is an inner buckle structure, which will be buckled on the mold core after die-casting. If the silicone mobile phone case is buckled directly from the mold core, it may cause damage to the silicone mobile phone case.

[0003] In response to the above technical problems, the applicant has retrieved some prior arts, such as the patent publication number CN115447085A, whose main technical means is that after the mobile phone protective cover inside the injection molding cavity is injection molded and cooled, the top plate is ejected by an external lifting mechanism, and the movable ejector rods at the four corners of the top of the top plate push the four groups of demolding corner blocks to rise at the same time. Since each group of demolding corner blocks and the core are connected by an inclined sliding connection, the four groups of demolding corner blocks drive the protective cover to rise while simultaneously shrinking inward, so that the four groups of demolding corner blocks are separated from the inner buckle limit of the four corners of the protective cover. At the same time, multiple groups of demolding ejector rods rise to eject and demold the rest of the protective cover. As the demolding ejector rod rises, the gear rack mechanism drives multiple groups of side ejector rods to eject the side of the protective cover, so that the side of the protective cover expands and deforms under the action of the side ejector rods, so that the side inner buckle structure of the protective cover can be better separated. After analysis by the applicant, the disadvantages of this technical solution are: when the protective sleeve is detached, the side of the core with the core-pulling slider and the opposite side of the core-pulling slider will still limit the inner buckle of the protective sleeve. When the ejector pin pushes the protective sleeve, the protective sleeve will be stretched and deformed, resulting in damage to the protective sleeve; at the same time, the side ejector pin will cause the side of the protective sleeve to expand and deform, which may easily cause the protective sleeve that has not been completely cooled to deform, thereby causing the protective sleeve to fail to meet the finished product standard, and when the side ejector pin is against the side of the protective sleeve, the protective sleeve will move outward a short distance due to the action of the ejector pin, so that the ejector pin may easily scratch the inner wall of the protective sleeve, resulting in damage to the protective sleeve. Summary of the invention

[0004] The purpose of the present invention is to provide an injection mold and a precision injection molding process thereof, aiming to solve the technical problem in the prior art that the limiting of the inner buckle structure of the protective cover cannot be completely released when the protective cover is demoulded, which easily leads to deformation and damage of the protective cover.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] An injection mold, comprising a movable mold, a fixed mold, a mold cavity, an inner mold plate and a driving mechanism, the mold further comprising:

[0007] Left and right adjustment plates, the inner template is provided with inclined planes 1 on the left and right sides, the inclined planes 1 are provided with left and right guide blocks, the left and right adjustment plates are provided with left and right guide grooves, the left and right guide grooves are slidably mounted with the left and right guide blocks;

[0008] An upper and lower adjustment plate, wherein the upper and lower sides of the inner template are provided with inclined planes 2, the inclined planes 2 are provided with upper and lower guide blocks, and the upper and lower adjustment plates are provided with upper and lower guide grooves, and the upper and lower guide grooves are slidably mounted with the upper and lower guide blocks;

[0009] A diagonal adjustment plate, wherein the four diagonal positions of the inner template are all provided with inclined plane three, the inclined plane three is provided with a diagonal guide block, the diagonal adjustment plate is provided with a diagonal guide groove, and the diagonal guide groove and the diagonal guide block are slidably installed;

[0010] A push rod, which passes through the fixed mold and is connected to the inner mold plate, and is connected to an external driving device;

[0011] The telescopic mechanism is installed on the push rod and is respectively connected to the left and right adjustment plates, the up and down adjustment plates and the diagonal adjustment plates. The telescopic mechanism drives the left and right adjustment plates and the up and down adjustment plates to move toward the fixed mold side, and the telescopic mechanism drives the diagonal adjustment plate to move toward the side away from the fixed mold.

[0012] As a preferred embodiment of the above technical solution, the inclination direction of the inclined plane 1 and the inclined plane 2 is opposite to the inclination direction of the inclined plane 3.

[0013] As a preferred embodiment of the above technical solution, the inner template, two left and right adjustment plates, two up and down adjustment plates and four diagonal adjustment plates are combined to form a mold core used in conjunction with the cavity when casting the mobile phone case.

[0014] As a preferred embodiment of the above technical solution, the telescopic mechanism includes:

[0015] Connecting rods 1, wherein four connecting rods 1 are provided, and the four connecting rods 1 are respectively connected to the four diagonal adjustment plates;

[0016] Connecting rods 2, wherein four connecting rods 2 are provided, and the four connecting rods 2 are respectively connected to the two left and right adjustment plates and the two up and down adjustment plates;

[0017] A driving plate 1, and the other ends of the four connecting rods 1 are all connected to the driving plate 1;

[0018] Driving plate 2, the other ends of the four connecting rods 2 are all connected to driving plate 2;

[0019] Telescopic part one and telescopic part two, the push rod is respectively installed with telescopic part one and telescopic part two, the output ends of the telescopic part one and telescopic part two are respectively installed with driving plate one and driving plate two, the push rod is respectively provided with movable groove one and movable groove two, the driving plate one and driving plate two are respectively movable in the movable groove one and movable groove two.

[0020] As a preferred embodiment of the above technical solution, the left and right adjustment plates are provided with an inward groove 1, the up and down adjustment plates are provided with an inward groove 2, the diagonal adjustment plates are provided with an inward groove 3, the connecting rod 1 is slidably connected to the inward groove 3, the connecting rod 2 connecting the left and right adjustment plates is slidably connected to the inward groove 1, and the connecting rod 2 connecting the up and down adjustment plates is slidably connected to the inward groove 2.

[0021] As a preferred embodiment of the above technical solution, the inner template is provided with a plurality of air outlet holes on the left, right and upper sides thereof, and the air outlet holes include parallel air holes and inclined air holes, the parallel air holes and the inclined air holes are arranged alternately, a plurality of parallel air holes are connected to the same air pipe one, and a plurality of inclined air holes are connected to the same air pipe two.

[0022] As a preferred embodiment of the above technical solution, the parallel pores remain parallel to the inner template, and the inclined pores are in an inclined state, with the inclined direction facing away from the inner template.

[0023] As a preferred embodiment of the above technical solution, a tray is passed through the movable mold and the fixed mold, and the tray is located below the inner mold plate.

[0024] A precision injection molding process for an injection mold, applied to any of the above-mentioned injection molds, comprises the following steps:

[0025] Step S1: The driving mechanism drives the movable mold and the fixed mold to close the mold, and pours the raw material into the mold cavity formed by the mold cavity, the inner mold plate, the left and right adjustment plates, the upper and lower adjustment plates, and the diagonal adjustment plates, and the raw material is formed into a mobile phone case after being shaped;

[0026] Step S2: The driving mechanism drives the movable mold and the fixed mold to separate, and the push rod drives the inner mold plate, the left and right adjustment plates, the up and down adjustment plates and the diagonal adjustment plates to move toward the movable mold through the external driving device, so as to push the formed mobile phone case out of the fixed mold;

[0027] Step S3: by telescoping the telescopic member 1 and the telescoping member 2, the driving plate 1 is moved toward the fixed mold direction, and the driving plate 2 is moved away from the fixed mold direction, that is, the four diagonal adjustment plates are moved toward the movable mold direction, and the two left and right adjustment plates and the two up and down adjustment plates are moved toward the fixed mold direction, so that the mobile phone case is no longer restricted by the four diagonal adjustment plates, the two left and right adjustment plates, and the two up and down adjustment plates;

[0028] Step S4: When the two left and right adjustment plates and the two up and down adjustment plates move, the air outlet holes are exposed, and air is supplied to air pipe 1 through an external air supply device, so that the parallel air holes blow air outward in parallel, so that the mobile phone case is in a suspended state;

[0029] Step S5: supply air to air pipe 2 through external air supply equipment, so that the inclined air hole is tilted outward to blow air, and at the same time stop the external air supply equipment from supplying air to air pipe 1, so that the mobile phone shell is blown outward, so that the molded mobile phone shell falls onto the tray, completing the entire injection molding process.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] 1. In the present invention, after the mobile phone shell is formed, the inner side is buckled on the frame formed by four diagonal adjustment plates, two left and right adjustment plates and two upper and lower adjustment plates. By moving the four diagonal adjustment plates, two left and right adjustment plates and two upper and lower adjustment plates, the two left and right adjustment plates and the two upper and lower adjustment plates are tilted and moved and moved closer to each other, so that the four diagonal adjustment plates are tilted and moved and moved closer to each other, so that the outer size of the frame shrinks inwards and becomes smaller than the size of the originally formed frame, thereby releasing the inner buckle restriction at all positions on the inner side of the mobile phone shell, so that the mobile phone shell is completely automatically demoulded, so that the demoulding is completed without the help of external force, the mobile phone shell is not easy to deform, and the damage to the mobile phone shell after molding is reduced, thereby improving the yield rate of the mobile phone shell;

[0032] 2. In the present invention, the two left and right adjustment plates, the two up and down adjustment plates, and the four diagonal adjustment plates are separated from the inner side of the mobile phone case in sequence, thereby effectively preventing the inner wall of the mobile phone case from sticking to the two left and right adjustment plates, the two up and down adjustment plates, and the four diagonal adjustment plates, thereby effectively preventing the inner wall of the mobile phone case from being damaged, thereby improving the yield rate of the mobile phone case;

[0033] 3. In the present invention, air is supplied to the air holes through an external air supply device, so that the mobile phone case originally hung on the two diagonal adjustment plates above is moved away from the two diagonal adjustment plates above, and the air output of each parallel air hole is made the same, so that the mobile phone case is completely in a suspended state, and the air output of each inclined air hole is made the same, so that the mobile phone case is blown off the mold core, so that automatic delivery can be completed without manual assistance, effectively avoiding damage to the mobile phone case due to external forces and other factors during manual assistance, reducing manual intervention, and improving the automation and stability of the production line;

[0034] 4. In the present invention, the gas blown out from the air outlet can further cool the formed mobile phone shell, thereby improving the effect of the formed mobile phone shell and making it less likely for the formed mobile phone shell to deform or collapse when it is hit after being blown down. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 It is a structural schematic diagram of another viewing angle of the present invention;

[0037] Figure 3 This is a schematic diagram of the mold core explosion structure;

[0038] Figure 4 It is a schematic diagram of the structure of the mold core from the initial state to the deformation;

[0039] Figure 5 It is a schematic diagram of the telescopic mechanism structure;

[0040] Figure 6 It is a schematic diagram of the connection structure between the telescopic mechanism and the inner template;

[0041] Figure 7 for Figure 6 The enlarged structural diagram at A in the middle;

[0042] Figure 8 It is a schematic diagram of the structure of the back side of the mold core;

[0043] Fig. 9 It is a schematic diagram of the top view and side structure of the inner template.

[0044] In the figure: 1, movable mold; 2, fixed mold; 3, cavity; 4, inner mold plate; 41, inclined plane 1; 42, inclined plane 2; 43, inclined plane 3; 44, air outlet; 441, parallel air hole; 442, inclined air hole; 5, left and right adjustment plate; 51, left and right guide groove; 52, left and right guide block; 53, inner groove 1; 6, upper and lower adjustment plate; 61, upper and lower guide groove; 62, upper and lower guide block; 63, inner groove 2; 7, diagonal adjustment plate; 71. Diagonal guide groove; 72. Diagonal guide block; 73. Inward groove three; 8. Push rod; 81. Movable groove one; 82. Movable groove two; 9. Telescopic mechanism; 91. Connecting rod one; 911. Drive plate one; 92. Connecting rod two; 921. Drive plate two; 10. Telescopic member one; 11. Telescopic member two; 12. Drive mechanism; 13. Trachea one; 14. Trachea two; 15. Tray; 16. Positioning block; 17. Positioning groove. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0046] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0047] like Figure 1-Figure 4As shown, an injection mold includes a movable mold 1, a fixed mold 2, a cavity 3, an inner mold plate 4 and a driving mechanism 12, and the mold also includes:

[0048] The left and right adjustment plate 5, the inner template 4 is provided with an inclined surface 41 on the left and right sides, the inclined surface 41 is provided with a left and right guide block 52, the left and right adjustment plate 5 is provided with a left and right guide groove 51, and the left and right guide groove 51 and the left and right guide block 52 are slidably installed;

[0049] The upper and lower adjustment plates 6 and the inner template 4 are provided with inclined planes 42 on the upper and lower sides, and the inclined planes 42 are provided with upper and lower guide blocks 62. The upper and lower adjustment plates 6 are provided with upper and lower guide grooves 61, and the upper and lower guide grooves 61 are slidably installed with the upper and lower guide blocks 62.

[0050] The diagonal adjustment plate 7, the four diagonal positions of the inner template 4 are all provided with inclined planes 3 43, the inclined planes 3 43 are provided with diagonal guide blocks 72, the diagonal adjustment plate 7 is provided with diagonal guide grooves 71, and the diagonal guide grooves 71 and the diagonal guide blocks 72 are slidably installed;

[0051] A push rod 8, which passes through the fixed mold 2 and is connected to the inner mold plate 4, and is connected to an external driving device;

[0052] The telescopic mechanism 9 is installed on the push rod 8. The telescopic mechanism 9 is respectively connected to the left and right adjustment plates 5, the up and down adjustment plates 6 and the diagonal adjustment plates 7. The telescopic mechanism 9 drives the left and right adjustment plates 5 and the up and down adjustment plates 6 to move toward the fixed mold 2. The telescopic mechanism 9 drives the diagonal adjustment plate 7 to move away from the fixed mold 2.

[0053] In one case of this embodiment, the driving mechanism 12 is used to drive the movable mold 1 and the fixed mold 2 to close or separate, and can be a cylinder; the external driving device connected to the push rod 8 can be a cylinder, or it can be a component that can drive the push rod 8 to telescope and move; the left and right guide grooves 51 and left and right guide blocks 52, the upper and lower guide grooves 61 and upper and lower guide blocks 62, and the diagonal guide grooves 71 and diagonal guide blocks 72 are all T-shaped.

[0054] In actual application, after the mobile phone shell is injection molded, the push rod 8 pushes the inner template 4, the left and right adjustment plates 5, the up and down adjustment plates 6 and the diagonal adjustment plates 7 to move toward the movable mold 1, and the molded mobile phone shell is pushed out of the fixed mold 2. At this time, the inner side of the mobile phone shell is buckled on the frame formed by the four diagonal adjustment plates 7, the two left and right adjustment plates 5 and the two up and down adjustment plates 6. The two left and right adjustment plates 5 and the two up and down adjustment plates 6 are moved toward the side of the fixed mold 2 by the telescopic mechanism 9, and the four diagonal adjustment plates 7 are moved toward the side away from the fixed mold 2. When the two left and right adjustment plates 5 and the two up and down adjustment plates 6 move, the two left and right adjustment plates 5 and the two up and down adjustment plates 6 are tilted. When the four diagonal adjustment plates 7 move, they move closer to each other, thereby releasing the inward buckle restriction on the four sides of the mobile phone case. When the four diagonal adjustment plates 7 move, the four diagonal adjustment plates 7 tilt and move closer to each other, thereby releasing the inward buckle restriction on the four diagonal positions of the mobile phone case, that is, after the four diagonal adjustment plates 7, the two left and right adjustment plates 5 and the two up and down adjustment plates 6 move, their outer dimensions shrink inwardly compared to the dimensions of the originally formed frame, thereby releasing the inward buckle restriction on all positions on the inner side of the mobile phone case, allowing the mobile phone case to be fully and automatically demoulded. In this way, demoulding is completed without the help of external force, the mobile phone case is not easily deformed, and the damage to the formed mobile phone case is reduced, thereby improving the yield rate of the mobile phone case;

[0055] At the same time, compared with the prior art, in which four groups of demoulding corner blocks are disengaged from the inner buckle limit of the four corners of the protective cover, at the same time, multiple groups of demoulding ejector pins rise to eject the rest of the protective cover. As the demoulding ejector pins rise, multiple groups of side ejector pins are driven by the gear rack mechanism to eject the side of the protective cover, so that the side of the protective cover is expanded and deformed under the action of the side ejector pins, so that the side inner buckle structure of the protective cover is better disengaged; in this process, when the protective cover moves, it moves a short distance along the side ejector pins, and the protective cover moves relative to the side ejector pins. The rod moves, which may easily cause the side push rod to scratch the inner wall of the protective cover, causing damage to the protective cover; in the present invention, the two left and right adjustment plates 5 and the two up and down adjustment plates 6 move first, and the four diagonal adjustment plates 7 move later, so that the two left and right adjustment plates 5 and the two up and down adjustment plates 6, and the four diagonal adjustment plates 7 are separated from the inner side of the mobile phone case in turn, thereby effectively preventing the inner wall of the mobile phone case from sticking to the two left and right adjustment plates 5, the two up and down adjustment plates 6 and the four diagonal adjustment plates 7, and further effectively preventing the inner wall of the mobile phone case from being damaged, thereby improving the finished product rate of the mobile phone case.

[0056] Furthermore, the inclination direction of the first slope 41 and the second slope 42 is opposite to the inclination direction of the third slope 43 .

[0057] In one case of this embodiment, the inclination directions of the first inclined surface 41 and the second inclined surface 42 are toward the fixed mold 2 , and the inclination direction of the third inclined surface 43 is away from the fixed mold 2 .

[0058] When this embodiment is actually used, the two left and right adjustment plates 5, the two up and down adjustment plates 6 and the four diagonal adjustment plates 7 move along the inclined plane 1 41, the inclined plane 2 42 and the inclined plane 3 43 at their respective positions respectively, so that the two left and right adjustment plates 5, the two up and down adjustment plates 6 and the four diagonal adjustment plates 7 move inwardly when moving, which makes it convenient to shrink their outer dimensions inwardly compared with the dimensions of the originally formed frame, thereby releasing the inward buckle restrictions at all positions on the inner side of the mobile phone case, so that the mobile phone case can be completely automatically demolded; in addition, the two left and right adjustment plates 5 and the two up and down adjustment plates 6 move in the same direction, and the four diagonal adjustment plates 7 move in another direction, which can effectively prevent the two left and right adjustment plates 5, the two up and down adjustment plates 6 and the four diagonal adjustment plates 7 from being blocked when moving in the same direction and being unable to complete the demolding.

[0059] Furthermore, the inner template 4, two left and right adjustment plates 5, two up and down adjustment plates 6 and four diagonal adjustment plates 7 are combined to form a mold core used in conjunction with the mold cavity 3 when casting the mobile phone case.

[0060] In actual application of this embodiment, the frame formed by the four diagonal adjustment plates 7, the two left and right adjustment plates 5 and the two up and down adjustment plates 6 is the same as the shape of the mobile phone case, so that the shape of the mobile phone case after injection molding can be guaranteed; in addition, the formed frame limits the inner buckled part of the inner side of the mobile phone case, so that the restriction on the inner buckled part of the inner side of the mobile phone case can be released by simply changing the size of the frame. After the four diagonal adjustment plates 7, the two left and right adjustment plates 5 and the two up and down adjustment plates 6 are moved, the frame is deformed and the overall outer size of the frame becomes smaller, thereby facilitating automatic demoulding of the mobile phone case.

[0061] like Figure 5-Figure 8 As shown, the telescopic mechanism 9 includes:

[0062] Connecting rod 1 91, there are four connecting rods 1 91, and the four connecting rods 1 91 are respectively connected to the four diagonal adjustment plates 7;

[0063] Connecting rods 92, four connecting rods 92 are provided, and the four connecting rods 92 are respectively connected to the two left and right adjustment plates 5 and the two up and down adjustment plates 6;

[0064] A driving plate 911, the other ends of the four connecting rods 91 are all connected to the driving plate 911;

[0065] The other ends of the four connecting rods 92 are connected to the driving plate 921;

[0066] Telescopic member 10 and telescopic member 2 11 are respectively installed in the push rod 8, and driving plate 1 911 and driving plate 2 921 are respectively installed at the output ends of telescopic member 10 and telescopic member 2 11, and active groove 1 81 and active groove 2 82 are respectively opened on the push rod 8, and driving plate 1 911 and driving plate 2 921 move in active groove 1 81 and active groove 2 82 respectively.

[0067] In one case of this embodiment, the telescopic member 10 can be a cylinder or a component that can drive the driving plate 1 911 to telescopically move; the telescopic member 11 can be a cylinder or a component that can drive the driving plate 2 921 to telescopically move.

[0068] In actual application of this embodiment, the telescopic member 10 and the telescopic member 2 11 drive the driving plate 1 911 and the driving plate 2 921 to telescope and move, so that the four connecting rods 1 91 and the four connecting rods 2 92 drive the two left and right adjustment plates 5, the two up and down adjustment plates 6 and the four diagonal adjustment plates 7 to move, thereby deforming the frame, reducing the overall size of the frame, and facilitating automatic demoulding of the mobile phone case.

[0069] Furthermore, an inner groove 1 53 is provided on the left and right adjustment plates 5, an inner groove 2 63 is provided on the upper and lower adjustment plates 6, and an inner groove 3 73 is provided on the diagonal adjustment plate 7. A connecting rod 1 91 is slidably connected to the inner groove 3 73, a connecting rod 2 92 connecting the left and right adjustment plates 5 is slidably connected to the inner groove 1 53, and a connecting rod 2 92 connecting the upper and lower adjustment plates 6 is slidably connected to the inner groove 2 63.

[0070] In one case of this embodiment, the inner groove 1 53, the inner groove 2 63, and the inner groove 3 73 are all T-shaped, and the connecting parts of the connecting rod 1 91 and the connecting rod 2 92 and the inner groove 1 53, the inner groove 2 63, and the inner groove 3 73 are all T-shaped.

[0071] When this embodiment is actually used, when the four connecting rods 1 91 and the four connecting rods 2 92 drive the two left and right adjustment plates 5, the two up and down adjustment plates 6 and the four diagonal adjustment plates 7 to move, since the two left and right adjustment plates 5, the two up and down adjustment plates 6 and the four diagonal adjustment plates 7 all move inward, the two left and right adjustment plates 5, the two up and down adjustment plates 6 and the four diagonal adjustment plates 7 move in positions relative to the planes of the four connecting rods 1 91 and the four connecting rods 2 92. At this time, through the inner groove 1 53, the inner groove 2 63 and the inner groove 3 73, the two left and right adjustment plates 5, the two up and down adjustment plates 6 and the four diagonal adjustment plates 7 are not restricted by the four connecting rods 1 91 and the four connecting rods 2 92 when moving, thereby ensuring the smoothness of the two left and right adjustment plates 5, the two up and down adjustment plates 6 and the four diagonal adjustment plates 7 when moving, and then ensuring the smoothness of the automatic demolding of the mobile phone case.

[0072] like Figure 4 and Fig. 9 As shown, the inner template 4 is provided with a plurality of air outlet holes 44 on the left, right and upper sides thereof, and the air outlet holes 44 include parallel air holes 441 and inclined air holes 442. The parallel air holes 441 and the inclined air holes 442 are arranged alternately, and a plurality of parallel air holes 441 are connected to the same air pipe 13, and a plurality of inclined air holes 442 are connected to the same air pipe 2 14.

[0073] In one case of this embodiment, both air pipe 13 and air pipe 2 14 are connected to an external air supply device, which may be an air pump.

[0074] In actual application of this embodiment, after the two left and right adjustment plates 5, the two upper and lower adjustment plates 6 and the four diagonal adjustment plates 7 have moved, the air outlet 44 is exposed. At the same time, the mobile phone shell is demoulded, and the top of the inner side of the mobile phone shell is hung on the two diagonal adjustment plates 7 above. At this time, air is supplied to the air pipe 13 through the external air supply device, and air is first supplied to the parallel air holes 441 on the inner template 4, so that the mobile phone shell is suspended away from the two diagonal adjustment plates 7 above, and then air is supplied to other air outlets 44, and the air outlet volume of each parallel air hole 441 is ensured to be the same, so that the mobile phone shell is completely in a suspended state, and then air is supplied to the air pipe 2 14 through the external air supply device, and the air outlet volume of each inclined air hole 442 is ensured to be the same, so that the mobile phone shell is blown off the mold core, so that automatic delivery can be completed without manual assistance, effectively avoiding damage to the mobile phone shell due to external forces and other factors during manual assistance, reducing manual intervention, and improving the automation and stability of the production line;

[0075] At the same time, the gas blown out from the air outlet 44 can further cool the formed mobile phone shell, thereby improving the effect of the formed mobile phone shell and making it less likely for the formed mobile phone shell to deform or collapse when it is hit after being blown down.

[0076] Furthermore, the parallel air holes 441 remain parallel to the inner template 4 , and the inclined air holes 442 are in an inclined state, with the inclined direction facing the direction away from the inner template 4 .

[0077] In actual application of this embodiment, when the inclined air holes 442 blow out gas, the direction in which the gas is blown out is an inclined direction, so that the mobile phone shell is blown away from the fixed mold 2, and the mobile phone shell is away from the mold core, completing demoulding.

[0078] like Figure 1 As shown, a tray 15 penetrates the movable mold 1 and the fixed mold 2 , and the tray 15 is located below the inner mold plate 4 .

[0079] In actual application of this embodiment, the blown-off mobile phone shell will fall onto the tray 15, so that on the one hand, the fallen mobile phone shell can be protected, and on the other hand, the worker only needs to take the mobile phone shell from the tray 15, avoiding the situation where the mobile phone shell is directly taken off the mold core and thus damaged;

[0080] The tray 15 runs through the movable mold 1 and the fixed mold 2, which can improve the stability of the movable mold 1 and the fixed mold 2 when they are molded or separated, and effectively avoid deviation between the movable mold 1 and the fixed mold 2, thereby ensuring the injection molding quality of the mobile phone case; in addition, a plurality of positioning blocks 16 are provided on the movable mold 1, and a plurality of positioning grooves 17 are opened on the fixed mold 2. The positioning blocks 16 are used in conjunction with the positioning grooves 17 to further improve the stability and accuracy of the movable mold 1 and the fixed mold 2 when they are molded.

[0081] A precision injection molding process for an injection mold, applied to any of the above-mentioned injection molds, comprises the following steps:

[0082] Step S1: The driving mechanism 12 drives the movable mold 1 and the fixed mold 2 to close the mold, and pours the raw material into the mold cavity formed by the mold cavity 3, the inner mold plate 4, the left and right adjustment plates 5, the upper and lower adjustment plates 6 and the diagonal adjustment plates 7, and the raw material is formed into a mobile phone case after being shaped;

[0083] Step S2: the driving mechanism 12 drives the movable mold 1 and the fixed mold 2 to separate, and the push rod 8 drives the inner mold plate 4, the left and right adjustment plates 5, the up and down adjustment plates 6 and the diagonal adjustment plates 7 to move toward the movable mold 1 through the external driving device, so as to push the finalized mobile phone shell out of the fixed mold 2;

[0084] Step S3: by telescoping the telescopic member 10 and the telescoping member 2 11, the driving plate 1 911 is moved toward the fixed mold 2, and the driving plate 2 921 is moved away from the fixed mold 2, that is, the four diagonal adjustment plates 7 are moved toward the movable mold 1, and the two left and right adjustment plates 5 and the two up and down adjustment plates 6 are moved toward the fixed mold 2, so that the mobile phone case is no longer restricted by the four diagonal adjustment plates 7, the two left and right adjustment plates 5 and the two up and down adjustment plates 6;

[0085] Step S4: When the two left and right adjustment plates 5 and the two up and down adjustment plates 6 move, the air outlet holes 44 are exposed, and air is supplied to the air pipe 13 through an external air supply device, so that the parallel air holes 441 blow air outward in parallel, so that the mobile phone case is in a suspended state;

[0086] Step S5: supply air to the air pipe 2 14 through an external air supply device, so that the inclined air hole 442 is tilted outward to blow air, and at the same time, the external air supply device is stopped to supply air to the air pipe 1 13, so that the mobile phone shell is blown outward, so that the molded mobile phone shell falls onto the tray 15, completing the entire injection molding process.

[0087] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An injection mold, comprising a movable mold (1), a fixed mold (2), a mold cavity (3), an inner mold plate (4) and a driving mechanism (12), characterized in that: The mold further comprises: A left-right adjustment plate (5), the inner template (4) is provided with an inclined surface (41) on both sides, the inclined surface (41) is provided with left-right guide blocks (52), the left-right adjustment plate (5) is provided with left-right guide grooves (51), the left-right guide grooves (51) and the left-right guide blocks (52) are slidably mounted; An upper and lower adjustment plate (6), wherein the inner template (4) is provided with a second inclined surface (42) on the upper and lower sides, and the second inclined surface (42) is provided with an upper and lower guide block (62), and the upper and lower adjustment plate (6) is provided with an upper and lower guide groove (61), and the upper and lower guide groove (61) and the upper and lower guide block (62) are slidably installed; A diagonal adjustment plate (7), wherein four diagonal positions of the inner template (4) are all provided with inclined plane three (43), and the inclined plane three (43) is provided with a diagonal guide block (72), and the diagonal adjustment plate (7) is provided with a diagonal guide groove (71), and the diagonal guide groove (71) and the diagonal guide block (72) are slidably mounted; A push rod (8), the push rod (8) passes through the fixed mold (2) and is connected to the inner mold plate (4), and the push rod (8) is connected to an external driving device; A telescopic mechanism (9) is installed on the push rod (8), and the telescopic mechanism (9) is respectively connected to the left and right adjustment plates (5), the upper and lower adjustment plates (6) and the diagonal adjustment plates (7). The telescopic mechanism (9) drives the left and right adjustment plates (5) and the upper and lower adjustment plates (6) to move toward the fixed mold (2), and the telescopic mechanism (9) drives the diagonal adjustment plate (7) to move toward a side away from the fixed mold (2).

2. The injection mold according to claim 1, characterized in that: The inclination direction of the inclined surface 1 (41) and the inclined surface 2 (42) is opposite to the inclination direction of the inclined surface 3 (43).

3. The injection mold according to claim 1, characterized in that: The inner template (4), two left and right adjustment plates (5), two up and down adjustment plates (6) and four diagonal adjustment plates (7) are combined to form a mold core used in conjunction with the mold cavity (3) when casting a mobile phone shell.

4. The injection mold according to claim 1, characterized in that: The telescopic mechanism (9) comprises: Connecting rods (91), wherein four connecting rods (91) are provided, and the four connecting rods (91) are respectively connected to four diagonal adjustment plates (7); Connecting rods (92), wherein four connecting rods (92) are provided, and the four connecting rods (92) are respectively connected to the two left and right adjustment plates (5) and the two up and down adjustment plates (6); A driving plate 1 (911), the other ends of the four connecting rods 1 (91) are all connected to the driving plate 1 (911); The other ends of the four connecting rods 2 (92) are connected to the driving plate 2 (921); A telescopic member 1 (10) and a telescopic member 2 (11), the push rod (8) is respectively installed with the telescopic member 1 (10) and the telescopic member 2 (11), the output ends of the telescopic member 1 (10) and the telescopic member 2 (11) are respectively installed with a driving plate 1 (911) and a driving plate 2 (921), the push rod (8) is respectively provided with a movable groove 1 (81) and a movable groove 2 (82), the driving plate 1 (911) and the driving plate 2 (921) are respectively movable in the movable groove 1 (81) and the movable groove 2 (82).

5. The injection mold according to claim 4, characterized in that: The left and right adjustment plates (5) are provided with an inner groove 1 (53), the upper and lower adjustment plates (6) are provided with an inner groove 2 (63), the diagonal adjustment plates (7) are provided with an inner groove 3 (73), the connecting rod 1 (91) is slidably connected to the inner groove 3 (73), the connecting rod 2 (92) connecting the left and right adjustment plates (5) is slidably connected to the inner groove 1 (53), and the connecting rod 2 (92) connecting the upper and lower adjustment plates (6) is slidably connected to the inner groove 2 (63).

6. The injection mold according to claim 2, characterized in that: The inner template (4) is provided with a plurality of air outlet holes (44) on the left, right and upper and lower sides. The air outlet holes (44) include parallel air holes (441) and inclined air holes (442). The parallel air holes (441) and the inclined air holes (442) are arranged alternately. The plurality of parallel air holes (441) are connected to the same air pipe one (13), and the plurality of inclined air holes (442) are connected to the same air pipe two (14).

7. The injection mold according to claim 6, characterized in that: The parallel air holes (441) remain parallel to the inner template (4), and the inclined air holes (442) are in an inclined state, with the inclination direction facing away from the inner template (4).

8. The injection mold according to claim 1, characterized in that: A tray (15) passes through the movable mold (1) and the fixed mold (2), and the tray (15) is located below the inner mold plate (4).

9. A precision injection molding process for an injection mold, characterized in that: An injection mold as claimed in any one of claims 1 to 8, comprising the following steps: Step S1: The driving mechanism (12) drives the movable mold (1) and the fixed mold (2) to close the mold, and pours the raw material into the mold cavity formed by the mold cavity (3), the inner mold plate (4), the left and right adjustment plates (5), the upper and lower adjustment plates (6) and the diagonal adjustment plates (7), and the raw material is formed into a mobile phone shell after being shaped; Step S2: the driving mechanism (12) drives the movable mold (1) and the fixed mold (2) to separate, and the push rod (8) drives the inner mold plate (4), the left and right adjustment plates (5), the upper and lower adjustment plates (6) and the diagonal adjustment plates (7) to move toward the movable mold (1) through the external driving device, so as to push the shaped mobile phone shell out of the fixed mold (2); Step S3: by telescoping the telescopic member 1 (10) and the telescoping member 2 (11), the driving plate 1 (911) is moved toward the fixed mold (2), and the driving plate 2 (921) is moved away from the fixed mold (2), that is, the four diagonal adjustment plates (7) are moved toward the movable mold (1), and the two left and right adjustment plates (5) and the two up and down adjustment plates (6) are moved toward the fixed mold (2), so that the mobile phone case is no longer restricted by the four diagonal adjustment plates (7), the two left and right adjustment plates (5) and the two up and down adjustment plates (6); Step S4: When the two left and right adjustment plates (5) and the two up and down adjustment plates (6) move, the air outlet holes (44) are exposed, and air is supplied to the air pipe 1 (13) through an external air supply device, so that the parallel air holes (441) blow air outward in parallel, so that the mobile phone case is in a suspended state; Step S5: supplying air to the second air pipe (14) through an external air supply device, so that the inclined air hole (442) is tilted and blown outwards, and at the same time, the external air supply device is stopped from supplying air to the first air pipe (13), so that the mobile phone shell is blown outwards, so that the formed mobile phone shell falls onto the tray (15), completing the entire injection molding process.

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