CN222987439U - Charger shell injection mold - Google Patents

Abstract

The application relates to an injection mold for a charger shell, which comprises a movable mold, a fixed mold and a demolding ejection mechanism fixed mold, wherein the fixed mold is arranged below the movable mold, an inner core is convexly arranged on the surface of the fixed mold, which is close to the movable mold, two opposite sides of each inner core are respectively provided with a group of core pulling mechanisms, the movable mold is used for closing or separating two groups of core pulling mechanisms, after mold closing, a cavity is formed between the two groups of core pulling mechanisms and the inner core and between the movable mold and the inner core, the demolding ejection mechanism comprises a thimble, an ejector block, a guide piece, a guide hole and an assembly groove, the assembly groove is formed in the top surface of the inner core, the ejector block is arranged in the assembly groove, the guide hole is formed in the assembly groove, the upper end of the guide piece is connected with the ejector block, the guide piece is telescopically arranged in the guide hole, the thimble is movably arranged in the inner core in a penetrating manner, and the free end of the thimble is positioned below the ejector block, so that the problem that demolding of a two-hole or porous charger shell is difficult and long in demolding is overcome.

Description

Charger shell injection mold

Technical Field

The application relates to the field of molds, in particular to an injection mold for a charger shell.

Background

With the increasing use frequency of electronic products, the electronic products are more frequently charged, and the requirements of people on chargers are also higher, and firstly, people hope that the charging head can be suitable for more kinds of electronic products while the charger is smaller and portable. The output end of the charger is usually fixed with a wire harness in the past, so that the charger is only suitable for charging electronic products matched with a wire harness connector, in order to be suitable for more electronic products, more manufacturers are provided with two female heads with different interfaces at the back of the charger for plugging the charging wires, so that the charger can be suitable for more charging wires, a user can plug the charger with the charging wires according to the interface requirements of the electronic products to be charged, and the charger can be simultaneously suitable for the charging functions of more kinds of electronic products.

Along with the above-mentioned change of charger, the structure of charger casing also corresponding changes, and original only the charger casing of a fixed connection pencil only need set up a round hole in the back and can satisfy the assembly requirement, and the charger casing after the structure change then need set up two square holes that supply the charging wire connector to peg graft in the back, has greatly increased the charger casing drawing of patterns degree of difficulty after injection moulding, simultaneously, the rise of charger casing drawing of patterns degree of difficulty has also increased the required time of single mould injection moulding, leads to the injection moulding efficiency of charger casing to descend.

Disclosure of Invention

The application provides an injection mold for a charger shell, which aims to solve the problems that two-hole or multi-hole charger shells are difficult to demold and long in demolding time.

The application provides a charger shell injection mold, which adopts the following technical scheme:

A charger housing injection mold comprising:

a movable mold;

The fixed die is arranged below the movable die, an inner core is convexly arranged on the surface of the fixed die, which is close to the movable die, two opposite sides of each inner core are respectively provided with a group of core pulling mechanisms, the movable die is used for closing or separating two groups of core pulling mechanisms, after die assembly, a cavity is formed between the two groups of core pulling mechanisms and the inner core and between the movable die and the inner core,

The demolding ejection mechanism comprises a thimble, an ejector block, a guide piece, a guide hole and an assembly groove, wherein the assembly groove is formed in the top surface of the inner core, the ejector block is arranged in the assembly groove, the guide hole is formed in the assembly groove, the upper end of the guide piece is connected with the ejector block, the guide piece is retractably arranged in the guide hole, the thimble movably penetrates through the inner core, and the free end of the thimble is located below the ejector block.

The fixed die comprises a bottom plate, a mounting plate arranged above the bottom plate and a connecting plate connected between the bottom plate and the mounting plate, the demolding ejection mechanism further comprises a buffer assembly, the buffer assembly comprises a guide column, a pressure spring and an ejector plate, the ejector plate is arranged between the bottom plate and the mounting plate, one end of the guide column is connected with the bottom plate, the other end of the guide column penetrates through the ejector plate and then is connected with the mounting plate, the pressure spring is clamped between the mounting plate and the ejector plate, and the ejector pin is fixed on the ejector plate.

The center shaft of the guide hole is parallel to the moving direction of the ejector pin, and the moving direction of the ejector pin is perpendicular to the upper surface of the ejector block.

The core pulling mechanism comprises a sliding block and an inclined guide pillar, the sliding block is slidably arranged on the mounting plate, one end of the inclined guide pillar is fixed on the movable die, and the sliding block is provided with an inclined guide hole matched with the inclined guide pillar.

The core pulling mechanism further comprises a sliding rail arranged on the mounting plate, and the sliding block is slidably arranged on the sliding rail.

The movable mould is provided with a pouring gate, and a runner is communicated between the pouring gate and the cavity.

The ejector plate is connected with an ejector rod for ejecting the water gap material, the ejector rod movably penetrates through the fixed die and the core pulling mechanism, and the free end of the ejector rod movably stretches into or leaves the runner.

The upper surface of the top block is convexly provided with a lug corresponding to the shape of the opening of the charger shell, and the upper surface of the lug is flush with the upper end surface of the charger shell.

The number of the convex blocks is equal to that of the holes of the charger shell, the number of the demolding ejection mechanisms is equal to that of the holes of the charger shell, and a group of demolding ejection mechanisms are correspondingly arranged on the holes of each charger shell.

The bottom plate is provided with a plurality of ejection driving holes for the injection molding machine to drive the ejector plate to move so as to drive the ejector pins and the ejector rods to move.

In summary, the present application includes at least one of the following beneficial technical effects:

The ejector pin is movably arranged on the inner core, the free end of the ejector pin is positioned below the ejector pin, after injection molding is completed, the ejector pin is pushed up, the ejector pin pushes up the ejector pin under the action of the guide piece and the guide hole, the contact area between the ejector pin and the charger shell is effectively increased, the ejector pin has wider applied demolding force distribution, the upper end of the guide piece is connected with the ejector pin, the guide piece is telescopically arranged in the guide hole, the ejector pin can movably penetrate through the inner core, the free end of the ejector pin is positioned below the ejector pin, in the actual working process, the ejector pin pushes up the ejector pin, the free end of the ejector pin pushes up the ejector pin under the action of the guide piece and the guide hole, the ejector pin can effectively increase the contact area between the ejector pin and the charger shell, the ejector pin has wider action surface, the charger shell can be pushed up and separated from the inner core better and faster, meanwhile, the unit of the ejector pin can effectively reduce the unit area acting on the charger shell, the ejector pin can be well matched with the guide hole, the ejector pin can not only can be accurately designed, but also can ensure that the high-quality product rate can be accurately moved into the die-matched with the guide hole, but the positioning efficiency of the ejector pin can be reduced, the application can not be guaranteed, and the production efficiency can be well, but the position of the ejector pin can be well-guaranteed, and the ejector pin can be accurately moved into the die-matched with the guide hole can be well, and the position can be guaranteed, and the position can be well, and the can be accurately moved.

Drawings

Fig. 1 is a perspective view of the present application.

Fig. 2 is a top view of the present application.

Fig. 3 is a cross-sectional view taken along the direction A-A in fig. 2 in accordance with the present application.

Fig. 4 is a bottom view of the present application.

Fig. 5 is a cross-sectional view in the direction B-B of fig. 4 in accordance with the present application.

Fig. 6 is a cross-sectional view taken along the direction C-C in fig. 4 in accordance with the present application.

Fig. 7 is a partial structural perspective view of the present application.

Fig. 8 is an enlarged view of region D of fig. 7 in accordance with the present application.

Fig. 9 is an exploded view of the inner core and a partial demold ejection mechanism of the present application.

Fig. 10 is a perspective view of the injection molded charger housing of the present application.

Reference numerals illustrate:

1. A charger housing; 11, a shell body 12, a plug hole;

2. 21, pouring gate, 22, runner;

3. demoulding ejection mechanism, 31, ejector pin, 32, ejector block, 33, guide piece, 34, guide hole, 35, assembly groove, 36, guide post, 37, compression spring, 38, ejector plate, 39 and bump;

4. fixed die 41, bottom plate 42, mounting plate 43 and connecting plate;

5. The core pulling mechanism comprises a core pulling mechanism body 51, a sliding block, a 52, an inclined guide post 53, a sliding rail 54 and an inclined guide hole;

6. the mold comprises a mold cavity, an inner core, an ejector rod and an ejector driving hole.

Detailed Description

The present application is described in further detail below with reference to fig. 1-10.

The charger housing 1 produced in this embodiment includes a housing body 11 and two plug holes 12 formed on the back surface of the housing body 11, where the two plug holes 12 are used for mounting connector female connectors of two different interface types, respectively.

A charger housing injection mold comprising:

A movable die 2;

The fixed die 4 is arranged below the movable die 2, an inner core 7 is convexly arranged on the surface of the fixed die 4, which is close to the movable die 2, two groups of core-pulling mechanisms 5 are respectively arranged on two opposite sides of each inner core 7, the movable die 2 is used for carrying out closing or separating on two groups of core-pulling mechanisms 5, after the die is closed, a cavity 6 is formed between the two groups of core-pulling mechanisms 5 and the inner core 7 and between the movable die 2 and the inner core 7,

The demolding ejection mechanism 3 comprises a thimble 31, an ejector block 32, a guide piece 33, a guide hole 34 and an assembly groove 35, wherein the assembly groove 35 is formed in the top surface of the inner core 7, the ejector block 32 is arranged in the assembly groove 35, the guide hole 34 is formed in the assembly groove 35, the upper end of the guide piece 33 is connected with the ejector block 32, the guide piece 33 is arranged in the guide hole 34 in a telescopic manner, the thimble 31 movably penetrates through the inner core 7, and the free end of the thimble 31 is positioned below the ejector block 32.

According to the application, through the arrangement of the demolding ejection mechanism 3, the demolding ejection mechanism 3 comprises a thimble 31, an ejector block 32, a guide piece 33, a guide hole 34 and an assembly groove 35, wherein the assembly groove 35 is formed in the top surface of the inner core 7, the ejector block 32 is arranged in the assembly groove 35, the guide hole 34 is formed in the assembly groove 35, the upper end of the guide piece 33 is connected with the ejector block 32, the guide piece 33 is telescopically arranged in the guide hole 34, the thimble 31 is movably penetrated through the inner core 7, and the free end of the thimble 31 is positioned below the ejector block 32; in the actual working process, after injection molding is finished, the ejector pins 31 are ejected upwards, the free ends of the ejector pins 31 are ejected upwards to push the ejector blocks 32 upwards to push the charger shell 1 under the action of the guide piece 33 and the guide holes 34, the contact area between the ejector blocks 32 and the charger shell 1 can be effectively increased, so that the demolding force exerted by the ejector pins 31 is distributed widely, the acting surface is larger, the charger shell 1 can be ejected better and faster to separate from the inner core 7, meanwhile, the acting force acted on the charger shell 1 in unit area can be effectively reduced due to the large acting surface, the damage to the charger shell 1 caused by the over-concentrated demolding force is avoided, the good product rate is improved, in addition, the guide piece 33 and the guide holes 34 are matched to play good positioning and guiding roles, the ejection stability is ensured, and when the mold is matched, the upper surface of the ejector blocks 32 is extruded by the movable mold 2, so that the ejector blocks 32 return to the initial position of the assembly groove 35, in the process, the guide piece 33 and the guide holes 34 play good positioning and guiding roles, the accurate entry of the ejector blocks 32 into the assembly groove 35 are ensured, the good product rate is reduced by adopting the design of the application, and the bad product rate is reduced by adopting the porous charger shell 1, shorten the drawing of patterns consuming time, promote production efficiency, can also effectively promote the yields.

The fixed mold 4 comprises a bottom plate 41, a mounting plate 42 arranged above the bottom plate 41, and a connecting plate 43 connected between the bottom plate 41 and the mounting plate 42, the demolding ejection mechanism 3 further comprises a buffer assembly, the buffer assembly comprises a guide post 36, a pressure spring 37 and an ejector plate 38, the ejector plate 38 is arranged between the bottom plate 41 and the mounting plate 42, one end of the guide post 36 is connected with the bottom plate 41, the other end of the guide post passes through the ejector plate 38 and then is connected with the mounting plate 42, the pressure spring 37 is clamped between the mounting plate 42 and the ejector plate 38, and the ejector pin 31 is fixed on the ejector plate 38.

The buffer component can play a good buffer role in the ejection and demolding processes, so that the product formed by the ejector pins 31 is prevented from being damaged due to overlarge impact, and the yield is improved.

The central axis of the guide hole 34 is parallel to the moving direction of the ejector pin 31, and the moving direction of the ejector pin 31 is perpendicular to the upper surface of the ejector block 32. Specifically, the moving direction of the ejector pin 31 is perpendicular to the back of the charger housing 1, so that the demolding is guaranteed to have smaller resistance, the ejection force required for demolding is smaller, the rejection rate of the product caused by the ejection force of the demolding is reduced to the minimum, and meanwhile, the demolding is quicker.

The core pulling mechanism 5 comprises a sliding block 51 and an inclined guide pillar 52, the sliding block 51 is slidably arranged on the mounting plate 42, one end of the inclined guide pillar 52 is fixed on the movable die 2, and the sliding block 51 is provided with an inclined guide hole 54 matched with the inclined guide pillar 52. Specifically, during mold closing, the movable mold 2 drives the inclined guide column 52 to move downwards, the lower ends of the inclined guide columns 52 are inserted into the inclined guide holes 54, and the two sliding blocks 51 of the two groups of core pulling mechanisms 5 are driven to slide in opposite directions until the two sliding blocks 51 are closed, at this time, the lower surface of the movable mold 2 and the two sliding blocks 51 complete the enclosure of the upper end face and the periphery of the inner core 7, a certain gap exists between the lower surface of the movable mold 2 and the two sliding blocks 51 and the inner core 7, and then a cavity 6 is formed, during mold opening, the movable mold 2 drives the inclined guide column 52 to move upwards, the lower ends of the inclined guide columns 52 are gradually pulled away from the inclined guide holes 54, and the two sliding blocks 51 of the two groups of core pulling mechanisms 5 are driven to slide in opposite directions until the inclined guide columns 52 completely leave the inclined guide holes 54, and at this time, the two sliding blocks 51 are completely separated and enter a designated position.

The core pulling mechanism 5 further includes a sliding rail 53 disposed on the mounting plate 42, and the sliding block 51 is slidably disposed on the sliding rail 53. The provision of the slide rail 53 can increase the accuracy of the sliding of the slider 51.

The movable mold 2 is provided with a gate 21, and a runner 22 is communicated between the gate 21 and the cavity 6.

The ejector plate 38 is connected with an ejector rod 8 for ejecting the nozzle material, the ejector rod 8 movably penetrates through the fixed die 4 and the core pulling mechanism 5, and the free end of the ejector rod 8 movably stretches into or leaves the runner 22. Specifically, during mold closing, the free end of the ejector rod 8 is located below the runner 22, after injection molding is completed, the mold is opened, the injection molding machine drives the ejector plate 38 to move upwards, and then drives the ejector pins 31 and the ejector rod 8 to move upwards, the ejector pins 31 jack the ejector blocks 32 to jack the product slightly so as to realize demolding, and meanwhile, the ejector rod 8 moves upwards, the free end of the ejector rod 8 enters the runner 22 and ejects the water gap material in the runner 22, so that simultaneous demolding of the product and the water gap material is realized.

Wherein, the upper surface of the top block 32 is convexly provided with a protruding block 39 corresponding to the opening shape of the charger housing 1, and the upper surface of the protruding block 39 is flush with the upper end surface of the charger housing 1. Specifically, during injection molding, the protrusion 39 is arranged to enable the charger housing 1 to form the plug hole 12 with a composite size, during mold closing, the lower end face of the movable mold 2 is contacted with the upper surface of the protrusion 39 to press down the top block 32, so that the top block 32 returns to the initial position, and during injection molding, the movable mold 2 is used for extruding the protrusion 39 to enable the top block 32 to return to the top block 32 reset mode of the initial position, so that the reset precision is high.

The number of the protruding blocks 39 is equal to the number of the holes of the charger housing 1, the number of the demolding ejection mechanisms 3 is equal to the number of the holes of the charger housing 1, and a group of demolding ejection mechanisms 3 are correspondingly arranged in each hole of the charger housing 1. Specifically, the number of the demolding ejection mechanisms 3 is two, and the two groups of demolding ejection mechanisms 3 are in one-to-one correspondence with the two plug holes 12.

Wherein, the bottom plate 41 is provided with a plurality of ejection driving holes 9 for driving the ejector plate 38 to move by the injection molding machine, so as to drive the ejector pins 31 and the ejector pins 8 to move. Specifically, during demolding, the injection molding machine is provided with a power piece which passes through the ejection driving hole 9 to jack the ejection plate 38 upwards, so as to drive the ejector pin 31 and the ejector rod 8 to move upwards to finish demolding.

The above embodiments are not intended to limit the scope of the application, so that the equivalent changes of the structure, shape and principle of the application are covered by the scope of the application.

Claims (10)

1. The charger shell injection mold is characterized by comprising:

a movable mold (2);

The fixed die (4) is arranged below the movable die (2), an inner core (7) is convexly arranged on the surface of the fixed die (4) close to the movable die (2), a group of core pulling mechanisms (5) are respectively arranged on two opposite sides of each inner core (7), the movable die (2) is used for closing or separating the two groups of core pulling mechanisms (5), after die assembly, a cavity (6) is formed between the two groups of core pulling mechanisms (5) and the inner core (7) and between the movable die (2) and the inner core (7),

The utility model provides a drawing of patterns ejection mechanism (3), includes thimble (31), ejector block (32), guide (33), guiding hole (34) and assembly groove (35), assembly groove (35) set up in the top surface of interior core (7), ejector block (32) set up in assembly groove (35), guiding hole (34) set up in assembly groove (35), the upper end of guide (33) with ejector block (32) are connected and guide (33) telescopically set up in guiding hole (34), thimble (31) movably wear to locate interior core (7), and the free end of thimble (31) is located the below of ejector block (32).

2. The charger housing injection mold according to claim 1, wherein the fixed mold (4) comprises a bottom plate (41), a mounting plate (42) arranged above the bottom plate (41), and a connecting plate (43) connected between the bottom plate (41) and the mounting plate (42), the demolding ejection mechanism (3) further comprises a buffer assembly, the buffer assembly comprises a guide post (36), a pressure spring (37) and an ejection plate (38), the ejection plate (38) is arranged between the bottom plate (41) and the mounting plate (42), one end of the guide post (36) is connected with the bottom plate (41), the other end of the guide post passes through the ejection plate (38) and then is connected with the mounting plate (42), the pressure spring (37) is clamped between the mounting plate (42) and the ejection plate (38), and the ejector pin (31) is fixed on the ejection plate (38).

3. The charger housing injection mold according to claim 1, wherein a center axis of the guide hole (34) is parallel to a moving direction of the ejector pin (31), and the moving direction of the ejector pin (31) is perpendicular to an upper surface of the ejector block (32).

4. The charger housing injection mold according to claim 2, wherein the core pulling mechanism (5) comprises a slide block (51) and an inclined guide post (52), the slide block (51) is slidably arranged on the mounting plate (42), one end of the inclined guide post (52) is fixed on the movable mold (2), and the slide block (51) is provided with an inclined guide hole (54) matched with the inclined guide post (52).

5. The charger housing injection mold according to claim 4, wherein the core pulling mechanism (5) further comprises a slide rail (53) provided to the mounting plate (42), and the slider (51) is slidably provided to the slide rail (53).

6. The charger housing injection mold according to claim 2, wherein the movable mold (2) is provided with a gate (21), and a runner (22) is communicated between the gate (21) and the cavity (6).

7. The charger housing injection mold according to claim 6, wherein the ejector plate (38) is connected with an ejector rod (8) for ejecting the gate material, the ejector rod (8) is movably arranged through the fixed mold (4) and the core pulling mechanism (5), and the free end of the ejector rod (8) is movably extended into or separated from the runner (22).

8. The charger housing injection mold according to claim 1, wherein the upper surface of the top block (32) is provided with a projection (39) corresponding to the opening shape of the charger housing (1) in a protruding manner, and the upper surface of the projection (39) is flush with the upper end surface of the charger housing (1).

9. The charger housing injection mold according to claim 8, wherein the number of the protruding blocks (39) is equal to the number of the holes of the charger housing (1), the number of the demolding ejection mechanisms (3) is equal to the number of the holes of the charger housing (1), and a group of demolding ejection mechanisms (3) are correspondingly arranged in the holes of each charger housing (1).

10. The injection mold for the charger housing according to claim 7, wherein the bottom plate (41) is provided with a plurality of ejection driving holes (9) for driving the ejector plate (38) to move by the injection molding machine table so as to drive the ejector pins (31) and the ejector rods (8) to move.