A molding die and molding equipment for realizing full edge wrapping of mobile phone shell

Abstract

The present invention provides a forming mold and forming equipment for realizing full hemming of a mobile phone case, relates to the field of mold technology, and solves the problem that the hemming of a mobile phone case is easily damaged and deformed during the process of removing a plate. The forming equipment sets a first waist-shaped hole that is vertically through and a second waist-shaped hole that is horizontally connected to the inner flanging forming block of the forming mold for realizing full hemming of the mobile phone case, the second waist-shaped hole is inclined and extends upward at one end close to the forming groove, the outer guide rod is vertically movably arranged in the first waist-shaped hole, the top end of the outer guide rod is connected to the upper mold part, and the lower section is movably inserted into the second guide hole, and the transmission rod is horizontally arranged in the second waist-shaped hole and fixedly connected to the outer guide rod. The present invention mechanically links the outer guide rod with the inner flanging forming block through the second waist-shaped hole and the transmission rod. Compared with the prior art, it can ensure that the inner flanging forming block can automatically withdraw from the upper space of the forming groove, and avoid the situation where the hemming of the mobile phone case is damaged or deformed due to being blocked by the inner flanging forming block.

Description

Technical Field

[0001] The invention relates to the technical field of molds, in particular to a molding mold and molding equipment for achieving full edge wrapping of a mobile phone shell. Background Art

[0002] Some people put a mobile phone case on their mobile phones to protect their mobile phones from damage caused by falling, bumping, etc. Some existing mobile phone cases are provided with an inner turn-over edge at the edge of the edge, and the inner turn-over edge is used to press on the mobile phone screen to improve the combination strength between the mobile phone case and the mobile phone and the protection strength of the mobile phone screen.

[0003] In the related art, such a mobile phone case with an inner turn-over at the edge is usually produced by a blow molding mold. During the production process, the inner turn-over molding block moves inward from the side to invade the space above the molding groove, and forms a mobile phone case molding groove with an open top together with the molding groove. Then, compressed gas is blown into the mobile phone case molding groove to squeeze the softened sheet part onto the wall of the mobile phone case molding groove to form a shell part. Then, the inner turn-over molding block is moved to withdraw from the space above the molding groove. Then, the sheet is removed from the mold, and the outer edge of the shell is removed to obtain the mobile phone case. However, in the process of removing the sheet from the mold, the edge of the shell part is easily damaged and deformed, which affects the product yield. Summary of the invention

[0004] The purpose of the present invention is to design a forming mold for realizing full edge wrapping of a mobile phone shell, so as to solve the problem that the edge wrapping of the mobile phone shell is easily damaged and deformed during the process of taking out the plate.

[0005] The present invention is achieved through the following technical solutions:

[0006] The present invention provides a forming mold for realizing full edge wrapping of a mobile phone case, comprising an upper mold part, a lower mold part, an inner flanging forming block, an outer guide rod and a transmission rod; the top surface of the lower mold part is provided with a forming groove and a second guide hole; the upper mold part is arranged above the lower mold part, and can be moved between a closed mold position and an open mold position relative to the lower mold part; four inner flanging forming blocks correspond to the four side edges of the forming groove one by one and are movably arranged on the top surface of the lower mold part, the inner flanging forming block is provided with a first waist-shaped hole that passes vertically through and a second waist-shaped hole that is horizontally connected to the first waist-shaped hole, and the second waist-shaped hole is close to the first waist-shaped hole. One end near the forming groove extends upward at an angle; the outer guide rod is vertically arranged and movably penetrates the first waist-shaped hole, the top end of the outer guide rod is connected to the upper mold part, and the lower section of the outer guide rod is movably plugged into the second guide hole; the transmission rod is horizontally arranged and movably penetrates the second waist-shaped hole, and one end of the transmission rod is fixedly connected to the outer guide rod; wherein, during the movement of the upper mold part to the mold opening position, the outer guide rod can be driven upward to push the upper side surface of the second waist-shaped hole through the transmission rod to drive the corresponding inner flange forming block to exit the upper space of the forming groove.

[0007] When the above-mentioned structure is adopted, the inner flanging forming block used to form the inner flanging of the mobile phone shell is designed to be linked with the outer guide rod used to guide the upper mold part through the transmission rod inserted into the second waist-shaped hole, so that the upper mold part can drive the outer guide rod to move up or down accordingly through the movement between the closed mold position and the open mold position that it will inevitably make during the production process, thereby driving the inner flanging forming block to make a corresponding translational movement away from or close to the molding groove through the movement of the outer guide rod, so that the inner flanging forming block can be automatically and reliably separated and closed with the mold opening and closing states. In this way, when the plate is removed from the inner flanging forming block, it can be ensured that the relative inner flanging forming blocks are all withdrawn from the upper space of the molding groove, and will not cause obstruction to the edge of the mobile phone shell, and it can be avoided that the inner flanging forming block fails to successfully withdraw from the upper space of the molding groove due to the failure of the control mechanism that controls the retreat of the inner flanging forming block or forgets to operate, resulting in the damage and deformation of the edge of the mobile phone shell due to the obstruction of the inner flanging forming block.

[0008] In order to further better realize the present invention, the following setting structure is particularly adopted: the upper mold part is provided with a first guide hole, the first guide hole provides a first step surface facing upward, the top end of the rod segment of the outer guide rod is provided with a cylindrical head with a diameter larger than the diameter of the rod segment of the outer guide rod, the cylindrical head is movably inserted in the first guide hole, and the axial length of the cylindrical head is smaller than the axial length of the first guide hole; wherein, when the upper mold part is in the mold opening position, the bottom end of the cylindrical head abuts the first step surface; when the upper mold part is in the mold closing position, the bottom end of the cylindrical head is separated from the first step surface.

[0009] When the above-mentioned setting structure is adopted, the axial length of the first guide hole is greater than the axial length of the cylindrical head, so that the cylindrical head can move axially relative to the upper mold part. In this way, during the movement of the upper mold part to the closed mold position, after the inner flange forming head invades the space above the molding groove and stops moving, the outer guide rod will stop moving, and the upper mold part can continue to descend alone to close the mold with the lower mold part. It can be seen that such a design allows us to make the inner flange forming head lighter and thinner without changing the stroke of the inner flange forming head.

[0010] In order to better realize the present invention, the following setting structure is particularly adopted: when the upper mold part is in the mold opening position, the bottom end of the outer guide rod is located below the top opening of the second guide hole, so that the upper mold part can move upward from the mold opening position to hook the top end of the second waist-shaped hole through the transmission rod to lift the inner flange forming block away from the top surface of the lower mold part.

[0011] When the above-mentioned structure is adopted, the part of the outer guide rod inserted into the second guide hole is longer, and even when the upper mold part is in the mold opening position, there is still a certain margin in the second guide hole. In this way, the upper mold part can be allowed to continue to be lifted upward when reaching the mold opening position, so that the inner flange forming block can be lifted away from the top surface of the lower mold part under the hook of the transmission rod, leaving an operating gap in between. In this way, the operator can insert a tool or a finger into the operating gap to knock or lift the shell part of the sheet upward to allow part of the side edge of the sheet to detach from the inner flange forming head, so that the operator can pinch the edge of the sheet with the fingers to remove it from the inner flange forming head, and the sheet can be quickly removed with one hand, thereby improving production efficiency.

[0012] In order to better realize the present invention, the following setting structure is particularly adopted: the upper mold part includes an upper mold base, an upper pad and a pressure plate that are detachably connected in sequence from top to bottom; when the upper mold part is in the closed mold position, the pressure plate and the four inner flange forming blocks are abutted against each other up and down to form a circumferentially closed sealing surface and a clamping gap located on the inner side of the sealing surface for clamping the sheet material.

[0013] When the above-mentioned structure is adopted, in the upper mold part, the upper mold base and the pressing plate are detachable, and the pressing plate can be replaced separately to match the inner flange forming blocks of different sizes and structures to adapt to mobile phone shells of different sizes and structures.

[0014] In order to further better realize the present invention, the following setting structure is particularly adopted: the lower mold part includes a lower mold base and a die, the center of the lower mold base is provided with an installation groove, the die is detachably arranged in the installation groove, the molding groove is formed in the die, and the second guide hole is arranged in the lower mold base.

[0015] In order to further better realize the present invention, the following setting structure is particularly adopted: the lower mold base also includes a lower support plate, an inner sleeve and a support, the top of the lower support plate is fixedly connected to the support and the inner sleeve, the lower mold base is fixedly connected to the top of the support, the inner sleeve is fixedly inserted in the second guide hole, and the outer guide rod is guided and matched with the inner sleeve.

[0016] In order to better realize the present invention, the following configuration is particularly adopted: a flange portion is provided at the middle section of the inner sleeve, the second guide hole provides a second step surface facing downward, and the flange portion abuts against the second step surface upward.

[0017] When the above-mentioned structure is adopted, the inner sleeve uses the flange portion to support the lower die base, so that the lower die base can be stabilized on the lower support plate without adding a support member between them.

[0018] In order to better realize the present invention, the following setting structure is particularly adopted: the inner flange forming block includes a slider and a forming head, the first waist-shaped hole and the second waist-shaped hole are arranged on the slider, and the forming head is detachably connected to one side of the slider close to the forming groove.

[0019] When the above-mentioned setting structure is adopted, the inner flange forming block can reuse the slider and adapt to mobile phone shells of different sizes and structures only by replacing the forming head.

[0020] In order to further better realize the present invention, the following setting structure is particularly adopted: the forming head is provided with a slot and a first connecting hole vertically connected to the slot, the side of the slider close to the forming groove is provided with a protrusion inserted forward into the slot, the protrusion is provided with a second connecting hole opposite to the first connecting hole, and connecting parts are inserted into the first connecting hole and the second connecting hole opposite to each other for fixing.

[0021] The present invention provides a molding device, which comprises the above-mentioned molding die for achieving full edge wrapping of a mobile phone shell.

[0022] The present invention has the following advantages and beneficial effects:

[0023] In the present invention, the molding die used in the molding equipment to realize the full hemming of the mobile phone shell is designed to link the inner flanging molding block used to form the inner flanging of the mobile phone shell through the transmission rod inserted into the second waist-shaped hole and the outer guide rod used to guide the upper mold part, so that the upper mold part can drive the outer guide rod to move up or down accordingly through the movement between the closed mold position and the open mold position that it will inevitably make during the production process, so as to drive the inner flanging molding block to make a corresponding translational movement away from or close to the molding groove through the movement of the outer guide rod, so that the inner flanging molding block can be automatically and reliably separated and closed with the mold opening and closing states. In this way, when the plate is removed from the inner flanging molding block, it can be ensured that the relative inner flanging molding blocks are all withdrawn from the upper space of the molding groove, and will not cause obstruction to the hemming of the mobile phone shell, and it can be avoided that the inner flanging molding block fails to successfully withdraw from the upper space of the molding groove due to the failure of the control mechanism that controls the retreat of the inner flanging molding block or forgets to operate, resulting in the damage and deformation of the mobile phone shell hemming due to the obstruction of the inner flanging molding block. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of a forming mold for realizing full edge wrapping of a mobile phone case, with the upper mold portion being in a mold opening position;

[0026] Figure 2 Shows Figure 1 The upper and lower cutting structures of the forming mold for realizing full edge wrapping of the mobile phone case are shown;

[0027] Figure 3 Shows Figure 1 A top view of a forming mold for achieving full hemming of a mobile phone case is shown;

[0028] Figure 4 Shows Figure 3 The sectional structure in the middle DD direction shows the positional relationship between the inner flanging forming block and the forming groove when the upper mold is in the mold opening position;

[0029] Figure 5 Shows Figure 3 The EE section structure shows the positional relationship between the upper die, the outer guide rod, the inner flanging forming block and the lower die when the upper die is in the open die position.

[0030] Figure 6The structure of the molding die for realizing full hemming of the mobile phone case is shown when the inner hem molding block of the upper mold part is between the mold opening position and the mold closing position and intrudes into the space above the molding groove to form a molding groove of the mobile phone case with the molding groove;

[0031] Figure 7 Shows the upper die section Figure 6 The positional relationship between the inner flange forming block and the forming groove in the position shown;

[0032] Figure 8 Shows the upper die section Figure 6 The positional relationship between the upper die, the outer guide rod, the inner flange forming block and the lower die in the position shown;

[0033] Fig. 9 It is a structural schematic diagram of a forming mold for realizing full hemming of a mobile phone case when the upper mold part is in a closed mold position;

[0034] Fig.10 Shows the upper die section Fig. 9 The positional relationship between the inner flange forming block and the forming groove in the position shown;

[0035] Fig.11 Shows the upper die section Fig. 9 The positional relationship between the upper die, the outer guide rod, the inner flange forming block and the lower die in the position shown;

[0036] Fig.12 It is a structural schematic diagram of a forming mold for achieving full edge wrapping of a mobile phone case with the upper mold part in a raised position;

[0037] Fig.13 Shows the upper die section Fig.12 In the position shown, the positional relationship between the inner flange forming block, the forming groove and the lower die seat;

[0038] Fig.14 Shows the upper die section Fig.12 The positional relationship between the upper die, the outer guide rod, the inner flange forming block and the lower die in the position shown;

[0039] Fig.15 It is an exploded schematic diagram of a molding die for achieving full edge wrapping of a mobile phone case;

[0040] Fig.16 yes Fig.15 A magnified view of part I in the middle;

[0041] Fig.17 yes Fig.15 Enlarged view of part II in the middle.

[0042] The markings in the figure are:

[0043] 10. Upper mold part;

[0044] 11. Upper die seat; 12. Upper pad; 13. Pressing plate;

[0045] 14. a first guide hole; 141. a first step surface;

[0046] 15. air flow channel; 16. bushing;

[0047] 20. Lower die part;

[0048] 21, lower die seat; 211, mounting groove; 212, second guide hole; 2121, second step surface;

[0049] 22. Concave die; 221. Forming groove;

[0050] 23. Lower support plate; 231. Bottom through hole;

[0051] 24. inner sleeve; 241. flange portion;

[0052] 25. Support; 26. Fixed plate; 27. Push rod; 28. Second spring;

[0053] 30. Inner flanging forming block;

[0054] 31. Sliding block; 311. First waist-shaped hole; 312. Second waist-shaped hole; 313. Protruding portion; 314. Second connecting hole;

[0055] 32, forming head; 321, slot; 322, first connecting hole;

[0056] 40. External guide rod; 41. Cylindrical head;

[0057] 50. Transmission rod; 60. First spring;

[0058] a. Sealing surface; b. Clamping gap; c. Operating gap. DETAILED DESCRIPTION

[0059] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0060] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0061] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0062] In order to solve the technical problem in the existing related technology that the edging of mobile phone cases is easily damaged and deformed during the process of removing the sheet, the inventor found in the research that the mechanism used to drive the inner flange forming block in the related technology is not linked with the upper mold part, but is controlled and operated solely by the control mechanism, so that the operator may forget or be too lazy to operate the control mechanism to withdraw the inner flange forming block after the sheet is formed. In addition, the control mechanism has a separate transmission structure and power source. When one of the transmission structure and power source of the control mechanism fails, the inner flange forming block cannot be withdrawn. This leads to the problem that the inner flange forming blocks are easily damaged and deformed due to collision and squeezing with each other when the sheet is removed.

[0063] thus:

[0064] On the one hand, the present application provides a molding die for realizing full edge wrapping of a mobile phone case, and the molding die for realizing full edge wrapping of a mobile phone case can well ensure that the edge wrapping of the mobile phone case is not easily damaged during the removal process, such as Figure 1-Figure 17 As shown, it is particularly configured as follows:

[0065] In this embodiment, the molding die for realizing full hemming of the mobile phone case includes an upper mold part 10 , a lower mold part 20 , an inner flanging molding block 30 , an outer guide rod 40 and a transmission rod 50 .

[0066] The upper mold part 10 is used to be installed on the upper mold frame of the molding equipment, and the upper mold part 10 is provided with a through air flow channel 15, and the lower mold part 20 is used to be installed and fixed on the mold base of the molding equipment. The outer guide rod 40 connects the upper mold part 10 and the lower mold part 20 respectively up and down, and is used to guide the upper mold part 10 when the upper mold part 10 moves between the closed mold position and the open mold position. The inner flanging molding block 30 is linked with the outer guide rod 40 through the transmission rod 50, so that the inner flanging molding block 30 can exit the upper space of the molding groove 221 set in the lower mold part 20 during the movement of the upper mold part 10 to the open mold position, and can automatically invade the upper space of the molding groove 221 set in the lower mold part 20 during the movement of the upper mold part 10 to the closed mold position, and finally form a mobile phone case molding groove with the molding groove 221.

[0067] like Figure 1 As shown, the upper mold part 10 and the lower mold part 20 are arranged opposite to each other, and the upper mold part 10 is located directly above the lower mold part 20, and can reciprocate between the closed mold position and the open mold position relative to the lower mold part 20, and the inner flange forming block 30 is arranged between the upper mold part 10 and the lower mold part 20. The upper mold part 10 moves downward to the position shown in FIG. Fig.10 In the closed mold position shown, the bottom of the upper mold part 10 abuts against the inner flange forming block 30, clamping the sheet together and forming an axially closed mobile phone shell forming groove.

[0068] like Figure 5 As shown, a plurality of second guide holes 212 are provided at the outer periphery of the lower mold portion 20 and the molding groove 221, and the lower section of the outer guide rod 40 extends into the corresponding second guide hole 212 so as to be movably plugged with the second guide hole 212 to achieve guidance.

[0069] The top end of the outer guide rod 40 may be fixedly connected to the upper mold portion 10 , or may be movably connected to the upper mold portion 10 , so that the outer guide rod 40 may move up and down along the axial direction relative to the upper mold portion 10 .

[0070] like Figure 2 As shown, a molding groove 221 matching the circumferential shape and size of the mobile phone case is provided in the middle of the top surface of the lower mold part 20, and the second guide hole 212 is located at the periphery of the molding groove 221. Four inner flange molding blocks 30 are movably provided on the top surface of the lower mold part 20 and are arranged around the molding groove 221. The inner flange molding blocks 30 correspond to the four sides of the molding groove 221 one by one. When the upper mold part 10 moves between the mold opening position and the mold closing position, the four inner flange molding blocks 30 can move synchronously toward the molding groove 221 and finally when the upper mold part 10 is in the position as shown in FIG. Fig.10 When the upper mold part 10 is in the closed mold position shown in FIG. 1 , the upper mold part 10 intrudes into the upper space of the molding groove 221, or moves away from the molding groove 221 synchronously and finally moves to the upper space of the molding groove 221 when the upper mold part 10 is in the closed mold position shown in FIG. Figure 4 The mold opening position shown is the space above the molding groove 221 .

[0071] like Figure 1 , Figure 2 and Figure 5 As shown, the inner flange forming block 30 is provided with a vertically through first waist-shaped hole 311, and the first waist-shaped hole 311 extends in a direction perpendicular to the side of the corresponding forming groove 221. The vertically arranged outer guide rods 40 are inserted into the corresponding first waist-shaped holes 311 one by one and contact the side of the first waist-shaped holes 311. The inner flange forming block 30 is also provided with a second waist-shaped hole 312 horizontally connected to the first waist-shaped hole 311, and the second waist-shaped hole 312 is inclined. Specifically, one end of the second waist-shaped hole 312 close to the forming groove 221 extends upwardly. The transmission rod 50 is horizontally arranged and movably penetrates the second waist-shaped hole 312 and contacts the side wall of the second waist-shaped hole 312. The transmission rod 50 extends into the first waist-shaped hole 311 and is fixedly connected to the outer guide rod 40, so that the inner flange forming block 30 can reciprocate in a direction perpendicular to the side of the corresponding forming groove 221 through the pushing action of the transmission rod 50 on the side wall of the second waist-shaped hole 312 during the up and down movement of the outer guide rod 40.

[0072] In this embodiment, the inner flange forming block 30 used to form the inner flange of the mobile phone case is designed to be linked with the outer guide rod 40 used to guide the upper mold part 10 through the transmission rod 50 inserted into the second waist-shaped hole 312, so that the upper mold part 10 can drive the outer guide rod 40 to move up or down accordingly through the movement between the closed mold position and the open mold position that it will inevitably make during the production process. In this way, the movement of the outer guide rod 40 can drive the inner flange forming block 30 to make a corresponding translational movement away from or close to the forming groove 221, so that the inner flange forming block 30 can be automatically and reliably separated and closed with the open and closed mold states. Specifically, when the upper mold part 10 moves toward the mold closing position, the upper mold part 10 can drive the outer guide rod 40 downward to push the lower side of the second waist-shaped hole 312 through the transmission rod 50 to drive the corresponding inner flange forming block 30 to move toward the molding groove 221. Finally, when the transmission rod 50 moves to the bottom end position of the second waist-shaped hole 312, the inner flange forming block 30 invades the upper space of the molding groove 221. When the upper mold part 10 moves toward the mold opening position, the upper mold part 10 can drive the outer guide rod 40 upward to push the upper side of the second waist-shaped hole 312 through the transmission rod 50 to drive the corresponding inner flange forming block 30 away from the molding groove 221. Finally, when the transmission rod 50 moves to the top end position of the second waist-shaped hole 312, the inner flange forming block 30 exits the upper space of the molding groove 221.

[0073] When the upper mold part 10 is in the mold opening position, it is the time to remove or put in a new sheet. In this way, when the upper mold part 10 is in the mold opening position, when the sheet is removed from the inner flange forming block 30, it can be ensured that the relative inner flange forming blocks 30 are all out of the upper space of the forming groove 221, and will not cause obstruction to the edge of the mobile phone case. It can also avoid the situation where the inner flange forming block 30 fails to successfully exit the upper space of the forming groove 221 due to failure or forgetting to operate the control mechanism that solely controls the retraction of the inner flange forming block 30, resulting in the damage and deformation of the edge of the mobile phone case due to obstruction by the inner flange forming block 30.

[0074] According to some optional embodiments, Figure 1 As shown, each inner flange forming block 30 is provided with two first waist-shaped holes 311 arranged side by side, and an outer guide rod 40 is passed through each first waist-shaped hole 311. In this way, the inner flange forming block 30 can be well prevented from deflecting during the movement process.

[0075] According to some optional embodiments, the upper mold part 10 and the outer guide rod 40 can move relative to each other. Figure 5 As shown, the interior of the upper mold part 10 is provided with a vertically penetrating first guide hole 14, which is configured as a stepped hole with a smaller top and a larger bottom, and provides a first stepped surface 141 facing upward. The outer guide rod 40 is configured as a stepped shaft, which includes a rod section and a cylindrical head 41 disposed at the top of the rod section, and the diameter of the cylindrical head 41 is larger than the rod section. The cylindrical head 41 is movably inserted into the first guide hole 14, and the axial length of the cylindrical head 41 is less than the axial length of the first guide hole 14. When the upper mold part 10 is in the position shown in FIG. Figure 5 In the mold opening position shown, there is a certain space in the first guide hole 14 located above the upper mold part 10 .

[0076] When the upper mold part 10 is in the Figure 5 In the mold opening position shown in FIG. 1 , the shoulder at the bottom end of the cylindrical head 41 abuts against the first step surface 141, so that the outer guide rod 40 will not exit the first guide hole 14 downward. Fig.11 In the mold closing position, the cylindrical head 41 moves upward for a distance so that its bottom end is separated from the first step surface 141 .

[0077] Preferably, a bushing 16 may be disposed in the first guide hole 14 , and the bushing 16 is in direct frictional contact with the outer peripheral surface of the cylindrical head 41 .

[0078] In the present embodiment, since the axial length of the first guide hole 14 is greater than the axial length of the cylindrical head 41, the cylindrical head 41 can move axially relative to the upper mold portion 10. In this way, during the movement of the upper mold portion 10 to the closed mold position, after the inner flange forming block 30 invades the space above the forming groove 221 and stops moving, the outer guide rod 40 will stop moving, while the upper mold portion 10 can continue to move downward alone to close the mold with the lower mold portion 20. It can be seen that such a design allows us to make the inner flange forming block 30 thinner without changing the stroke of the inner flange forming block 30.

[0079] According to some optional embodiments, the overall length of the outer guide rod 40 is relatively long, but the specific length is not limited. Figure 5 In the mold opening position shown, the bottom end of the outer guide rod 40 also has a section located below the top of the second guide hole 212. When the upper mold frame can continue to drive the upper mold part 10 upward to exceed the mold opening position, the upper mold part 10 can be driven by the upper mold frame to continue to move upward from the mold opening position. At this time, it is also necessary to ensure that the upper mold part 10 can be driven by the upper mold frame to move upward from the mold opening position through the step surface at the bottom end of the first guide hole 14 to hook the outer guide rod 40 upward. In this way, the upper mold part 10 can be hooked by the transmission rod 50 to the top of the second waist-shaped hole 312 to lift the inner flange forming block 30 away from the top surface of the lower mold part 20 when the upper mold part 10 moves to the position shown in the figure. Fig.12 In the raised position shown, an operating gap c is formed between the raised inner flange forming block 30 and the top surface of the lower mold part 20. The operating gap c needs to ensure that a rod-shaped tool or a finger can be inserted to knock or push the bottom of the plate.

[0080] In the present embodiment, the portion of the outer guide rod 40 inserted into the second guide hole 212 is relatively long, and even when the upper mold portion 10 is located at the mold opening position, there is still a certain margin located in the second guide hole 212. In this way, the upper mold portion 10 can be allowed to continue to be lifted upward when reaching the mold opening position, so that the inner flange forming block 30 can be lifted away from the top surface of the lower mold portion 20 under the hook of the transmission rod 50, leaving an operating gap c in between. In this way, the operator can insert a tool or a finger into the operating gap c to knock upward or lift the shell portion of the sheet material to allow part of the side edge of the sheet material to detach from the inner flange forming block 30, so that the sheet material can be removed from the inner flange forming block 30 by pinching the edge of the sheet material with the fingers, and the sheet material can be quickly removed with one hand, thereby improving production efficiency.

[0081] According to some optional embodiments, Figure 2 , Figure 4 and Fig.15As shown, the upper mold part 10 is not a single structure, but is arranged as an assembly, which includes an upper mold base 11, an upper pad 12 and a pressing plate 13 which are detachably connected in sequence from top to bottom, and the pressing plate 13 is used to directly abut against the top of the inner flange forming block 30 to form a sealing surface a and to press the plate against the inner flange forming block 30. The middle parts of the upper mold base 11, the upper pad 12 and the pressing plate 13 are connected to form an air flow channel 15 together.

[0082] The upper mold part 10 is in the Fig.10 In the closed mold position shown, the pressing plate 13 moves downward until it abuts against the four inner flange forming blocks 30, forming a circumferentially closed sealing surface a and a clamping gap b located inside the sealing surface a for clamping the sheet material.

[0083] In this embodiment, the upper mold part 10 configured as a component can reduce the manufacturing difficulty and replacement cost, and in the upper mold part 10, the upper mold base 11 and the pressure plate 13 are detachable, and the pressure plate 13 can be replaced separately to cooperate with the inner flange forming blocks 30 of different size structures to adapt to mobile phone shells of different sizes and structures.

[0084] According to some optional embodiments, Figure 2 , Figure 4 and Fig.15 As shown, the lower mold part 20 is provided as an assembly, which includes a lower mold base 21 and a concave mold 22. A mounting groove 211 is provided at the center of the top surface of the lower mold base 21, and the concave mold 22 is detachably placed in the mounting groove 211, and the top surface of the concave mold 22 is flush with the top surface of the lower mold base 21. A molding groove 221 is provided at the center of the top surface of the concave mold 22. A second guide hole 212 is provided on the lower mold base 21 at the periphery of the mounting groove 211.

[0085] In this embodiment, the lower mold part 20 configured as a component can reduce the manufacturing difficulty and replacement cost.

[0086] According to some optional embodiments, Figure 2 , Figure 4 and Fig.15 As shown, the lower die base 21 includes a lower support plate 23, an inner sleeve 24 and a support 25 in addition to the detachably connected lower die base 21 and the concave die 22. The support 25 is fixedly connected to the middle position of the top of the lower support plate 23, and the inner sleeve 24 is distributed around the support 25. The support 25 and the inner sleeve 24 provide support for the lower die base 21.

[0087] Specifically, the lower die base 21 is fixedly connected to the top of the support 25 by fastening bolts, the top of the inner sleeve 24 is fixedly inserted into the second guide hole 212, and the bottom of the inner sleeve 24 is fixedly inserted into the bottom through hole 231 provided in the lower support plate 23. The lower section of the outer guide rod 40 extends into the inner sleeve 24 and cooperates with the inner wall guide of the inner sleeve 24.

[0088] Preferably, a flange portion 241 is provided in the middle section of the inner sleeve 24, and the inner sleeve 24 supports the lower die base 21 by abutting the flange portion 241 against the bottom of the lower die base 21. Exemplarily, the flange portion 241 of the inner sleeve 24 can directly abut against the bottom surface of the lower die base 21, or can be Figure 5 and Fig.17 As shown in the figure, it abuts upward on the second step surface 2121 facing downward provided by the second guide hole 212; if it is like the latter, the second guide hole 212 opened on the lower mold base 21 needs to be set as Fig.17 The second guide hole 212 provides a second step surface 2121 facing downward. After the inner sleeve 24 is inserted into the second guide hole 212, the flange portion 241 will be as shown in FIG. Figure 5 As shown, it abuts upwardly against the second step surface 2121.

[0089] In this embodiment, the inner sleeve 24 uses the flange portion 241 to support the lower die base 21, which can improve the stability of the lower die base 21, so that the lower die base 21 can be stable on the lower support plate 23 without adding support members.

[0090] According to some optional embodiments, Figure 2 , Fig.15 and Fig.16 As shown, the inner flange forming block 30 is provided as a component rather than a single body structure. The inner flange forming block 30 comprises a slider 31 and a forming head 32 .

[0091] The slider 31 is used to cooperate with the outer guide rod 40 and the transmission rod 50 to realize linkage with the upper mold part 10. The slider 31 is provided with a first waist-shaped hole 311 and a second waist-shaped hole 312. The molding head 32 is used to provide a head that invades the space above the molding groove 221 and is used to form the inner flange of the mobile phone shell. The molding head 32 is detachably connected to a side of the slider 31 close to the molding groove 221.

[0092] Exemplarily, the slider 31 is provided with a vertically extending slide groove on one side surface close to the molding groove 221, and the top end of the slide groove is open and the bottom end is closed. A vertically extending slide groove is provided on the side surface of the molding head 32 facing the slide groove. During assembly, the molding head 32 is installed from top to bottom, and the slide groove slides into the slide groove. After the molding head 32 and the slider 31 are assembled in place, the slide groove abuts against the bottom end of the slide groove, and the molding head 32 is flush with the bottom surface of the slider 31, so that the molding head 32 can only be removed from the molding head 32 by sliding upward relative to the slider 31.

[0093] For example, Fig.16As shown in FIG. 1 , a protrusion 313 is provided on the side of the slider 31 close to the molding groove 221, and a slot 321 adapted to the protrusion 313 is provided on the side of the molding head 32 facing the slider 31 (i.e., the side away from the molding groove 221). The protrusion 313 is inserted forward into the slot 321, so that the slider 31 and the molding head 32 are as shown in FIG. Figure 2 As shown, the front and rear parts are abutted together and cannot move up and down or left and right relative to each other.

[0094] The slider 31 is provided with a second connection hole 314 on its protruding portion 313. The second connection hole 314 can be arranged vertically or horizontally. The second connection hole 314 can pass through the slider 31 or not.

[0095] The molding head 32 is provided with a first connection hole 322 , which is connected to the insertion slot 321 and axially opposite to the second connection hole 314 provided on the protrusion 313 .

[0096] The first connection hole 322 can be set as a smooth hole, and the second connection hole 314 can be set as a screw hole. The slider 31 and the forming head 32 are connected by bolts that penetrate the first connection hole 322 and the second connection hole 314, so that the slider 31 and the forming head 32 cannot move forward and backward relative to each other and separate. The bolt is screwed with the second connection hole 314 to prevent it from coming out of the second connection hole 314, causing the slider 31 and the forming head 32 to move forward and backward relative to each other and separate.

[0097] In this embodiment, after the inner flange forming block 30 is set as an assembly, the slider 31 can be reused, and it only needs to replace the forming head 32 to adapt to mobile phone shells of different sizes and structures.

[0098] According to some optional embodiments, Fig.14 As shown, a first spring 60 is arranged in the first guide hole 14 arranged in the upper mold part 10, and the upper and lower ends of the first spring 60 respectively abut against the plug arranged at the top end of the first guide hole 14 and the cylindrical head 41 at the top end of the outer guide rod 40.

[0099] According to some optional embodiments, Fig.12 and Fig.15 As shown, the lower mold part 20 is fixedly connected to a fixed plate 26 on one side of its support 25, and a push rod 27 is movably penetrated on the fixed plate 26, and the top end of the push rod 27 is upwardly penetrated to the top surface of the lower mold base 21. A second spring 28 is sleeved on the push rod 27, and the upper and lower ends of the second spring 28 are respectively abutted on the push rod 27 and the fixed plate 26, providing an upward thrust for the push rod 27. When the upper mold part 10 is in a closed mold state, the second spring 28 is compressed, and the top end of the push rod 27 extends into the second guide hole 212 and abuts on the bottom surface of the inner flanging forming block 30, so that the inner flanging forming block 30 and the upper mold part 10 can be more closely abutted together.

[0100] On the other hand, the present application provides a molding device, particularly adopting the following configuration structure:

[0101] In this embodiment, the molding device includes a molding die for achieving full edge wrapping of the mobile phone case according to any of the above embodiments.

[0102] According to some optional embodiments, the upper mold part 10 is installed on the upper mold frame of the molding equipment through the upper mold base 11, and the air flow channel 15 of the upper mold part 10 is connected to the high-pressure air pipe.

[0103] The lower mold part 20 is fixed to the mold base of the molding equipment through the lower mold base 21 or the lower supporting plate 23.

[0104] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A forming mold for achieving full edge wrapping of a mobile phone shell, characterized in that: include: A lower mold part (20), the top surface of which is provided with a molding groove (221) and a second guide hole (212); An upper mold part (10) is arranged above the lower mold part (20) and can move relative to the lower mold part (20) between a mold closing position and a mold opening position; Inner flange forming blocks (30), four of the inner flange forming blocks (30) corresponding to the four side edges of the forming groove (221) one by one and movably arranged on the top surface of the lower mold part (20), the inner flange forming blocks (30) being provided with a first waist-shaped hole (311) penetrating vertically and a second waist-shaped hole (312) horizontally connected to the first waist-shaped hole (311), and the second waist-shaped hole (312) extending obliquely upwards at one end close to the forming groove (221); An outer guide rod (40) is vertically arranged and movably penetrates the first waist-shaped hole (311), the top end of the outer guide rod (40) is connected to the upper mold part (10), and the lower section of the outer guide rod (40) is movably plugged into the second guide hole (212); A transmission rod (50) is horizontally arranged and movably penetrates the second waist-shaped hole (312), and the transmission rod (50) is fixedly connected to the outer guide rod (40); In the process of the upper mold part (10) moving toward the mold opening position, it can drive the outer guide rod (40) upward to push the upper side surface of the second waist-shaped hole (312) through the transmission rod (50) to drive the corresponding inner flange forming block (30) to withdraw from the upper space of the forming groove (221).

2. A forming die for achieving full edge wrapping of a mobile phone case according to claim 1, characterized in that: The upper mold part (10) is provided with a first guide hole (14), the first guide hole (14) provides a first step surface (141) facing upwards, the top end of the rod section of the outer guide rod (40) is provided with a cylindrical head (41) with a diameter larger than the diameter of the rod section of the outer guide rod (40), the cylindrical head (41) is movably inserted into the first guide hole (14), and the axial length of the cylindrical head (41) is smaller than the axial length of the first guide hole (14); Wherein, when the upper mold part (10) is in the mold opening position, the bottom end of the cylindrical head (41) abuts against the first step surface (141); When the upper mold part (10) is in the mold closing position, the bottom end of the cylindrical head (41) is separated from the first step surface (141).

3. A forming die for achieving full edge wrapping of a mobile phone case according to claim 1, characterized in that: When the upper mold part (10) is in the mold opening position, the bottom end of the outer guide rod (40) is located below the top opening of the second guide hole (212), so that the upper mold part (10) can move upward from the mold opening position to hook the top end of the second waist-shaped hole (312) through the transmission rod (50) to lift the inner flange forming block (30) off the top surface of the lower mold part (20).

4. A forming die for achieving full edge wrapping of a mobile phone case according to claim 1, characterized in that: The upper die part (10) comprises an upper die base (11), an upper pad (12) and a pressing plate (13) which are detachably connected in sequence from top to bottom; When the upper mold part (10) is in the mold closing position, the pressure plate (13) and the four inner flange forming blocks (30) abut against each other up and down to form a circumferentially closed sealing surface (a) and a clamping gap (b) located on the inner side of the sealing surface (a) for clamping the plate.

5. A forming die for achieving full edge wrapping of a mobile phone case according to claim 1, characterized in that: The lower die portion (20) comprises a lower die base (21) and a die (22); a mounting groove (211) is provided at the center of the lower die base (21); the die (22) is detachably disposed in the mounting groove (211); the molding groove (221) is formed in the die (22); and the second guide hole (212) is provided in the lower die base (21).

6. A forming die for achieving full edge wrapping of a mobile phone case according to claim 5, characterized in that: The lower die base (21) also includes a lower supporting plate (23), an inner sleeve (24) and a support (25); the top of the lower supporting plate (23) is fixedly connected to the support (25) and the inner sleeve (24); the lower die base (21) is fixedly connected to the top of the support (25); the inner sleeve (24) is fixedly inserted in the second guide hole (212); and the outer guide rod (40) is guided and matched with the inner sleeve (24).

7. A forming die for achieving full edge wrapping of a mobile phone case according to claim 6, characterized in that: The middle section of the inner sleeve (24) is provided with a flange portion (241), the second guide hole (212) provides a second step surface (2121) facing downward, and the flange portion (241) abuts against the second step surface (2121) upward.

8. A forming die for achieving full edge wrapping of a mobile phone case according to claim 1, characterized in that: The inner flange forming block (30) comprises a slider (31) and a forming head (32), the first waist-shaped hole (311) and the second waist-shaped hole (312) are arranged on the slider (31), and the forming head (32) is detachably connected to a side of the slider (31) close to the forming groove (221).

9. A forming die for achieving full edge wrapping of a mobile phone case according to claim 8, characterized in that: The molding head (32) is provided with a slot (321) and a first connecting hole (322) vertically connected to the slot (321); a protrusion (313) inserted forward into the slot (321) is provided on a side of the slider (31) close to the molding groove (221); the protrusion (313) is provided with a second connecting hole (314) opposite to the first connecting hole (322); connecting pieces are inserted and fixed into the first connecting hole (322) and the second connecting hole (314) opposite to each other.

10. A molding device, characterized in that: The invention comprises a molding die for realizing full edge wrapping of a mobile phone shell as described in any one of claims 1 to 9.

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