An injection mold with a two-way inclined core-pulling combined slider mechanism

Abstract

The present invention provides an injection mold with a two-way inclined core-pulling combined slider mechanism, which includes a first front mold assembly, a second front mold assembly, a rear mold assembly, a mold core, and an opening forming assembly. The mold core includes a front mold core disposed on the second front mold assembly and a rear mold core disposed on the rear mold assembly. In the closed mold state, the front mold core and the rear mold core jointly enclose to form a product cavity; the opening forming assembly has a front slider core for forming an opening; the second front mold assembly and the front mold core are provided with a front inclined slideway penetrating through to the product cavity. The front slider core is slidably assembled in the front inclined slideway and forms a transmission connection with the first front mold assembly; the closing or opening of the mold between the first front mold assembly and the second front mold assembly drives the front slider core to switch between the in-place position of inserting into the product cavity and the dislocation position of disengaging from the product cavity. It can well realize the injection molding of injection products with inclined openings, the mold structure is simple, and the demolding qualification rate is high.

Description

Technical Field

[0001] The present invention relates to the field of injection molds, and particularly to an injection mold with a two-way inclined core-pulling combined slider mechanism. Background Art

[0002] An injection mold is a tool for producing plastic products and also a tool for endowing plastic products with a complete structure and precise dimensions. Injection molding through an injection mold is a processing method used in mass-producing some parts with complex shapes. The specific steps are to inject the heat-melted plastic into the mold cavity under high pressure by an injection molding machine, and after cooling and solidifying, a formed product is obtained.

[0003] As shown in FIGS. 1(a) and 1(b), an injection product 100 with an inclined handle is shown, which has an inclined front end wall and an opening 101 provided on the front end wall; because the opening 101 is inclined, when forming this product by injection molding, the structure realized by the existing injection mold is relatively complex, and the qualified rate of demolding is relatively low. Therefore, improvement is needed. Summary of the Invention

[0004] For this reason, the present invention provides an injection mold with a two-way inclined core-pulling combined slider mechanism, which can well improve the above problems.

[0005] To achieve the above object, the technical solutions provided by the present invention are as follows:

[0006] An injection mold with a two-way inclined core-pulling combined slider mechanism, the product for injection molding has an inclined front end wall and an opening provided on the front end wall; the mold includes a mold body, a mold core and an opening forming assembly arranged in the mold body, the mold body includes a first front mold assembly, a second front mold assembly and a rear mold assembly which are arranged in sequence from front to back and can move relatively, the mold core includes a front mold core arranged on the second front mold assembly and a rear mold core arranged on the rear mold assembly, and in the closed mold state, the front mold core and the rear mold core jointly enclose to form a product cavity; the opening forming assembly has a front slider core for forming the opening; a front inclined slideway penetrating through to the product cavity is opened on the second front mold assembly and the front mold core, the front slider core is slidably assembled in the front inclined slideway and forms a transmission connection with the first front mold assembly; the closing or opening of the mold between the first front mold assembly and the second front mold assembly drives the front slider core to switch between the in-place position of inserting into the product cavity and the out-of-place position of disengaging from the product cavity.

[0007] Furthermore, the opening forming assembly further includes a front inclined guide block, the front inclined guide block is fixedly arranged on the first front mold assembly, an inclined guide groove is opened on the front slider core, and the front inclined guide block is inserted into the inclined guide groove of the front slider core to realize the inclined guide cooperation with the front slider core.

[0008] Further, a limiting structure corresponding to the front end and the rear end of the front slider core is further provided on the second front mold assembly.

[0009] Further, the front end wall of the product further has through holes and grooves on the periphery of the opening. The front slider core specifically includes a front slider body, an opening forming core, a through hole forming core, and a groove forming core. The front slider body is slidably assembled in the front inclined slideway. The opening forming core, the through hole forming core, and the groove forming core are all fixed to the rear end of the front slider body and extend towards the product cavity.

[0010] Further, the inner wall surface of the product further has a recess located on the periphery of the opening. The rear mold assembly includes a first rear mold assembly located at the rear end of the second front mold assembly and a second rear mold assembly located at the rear end of the first rear mold assembly. The rear mold core is arranged on the first rear mold assembly. The injection mold further includes a recess forming assembly. The recess forming assembly has a rear slider core for forming the recess. A rear inclined slideway communicating with the product cavity is formed on the first rear mold assembly and the rear mold core. The rear slider core is slidably assembled in the rear inclined slideway and forms a transmission connection with the second rear mold assembly. The closing or opening of the first rear mold assembly and the second rear mold assembly drives the rear slider core to switch between the in-place position of inserting into the product cavity and the dislocation position of disengaging from the product cavity.

[0011] Further, the recess forming assembly further includes a rear inclined guide block. The rear inclined guide block is fixedly arranged on the second rear mold assembly. An inclined guide groove is formed on the rear slider core. The rear inclined guide block is inserted into the inclined guide groove of the rear slider core to realize the inclined guide cooperation with the rear slider core.

[0012] Further, the product further has an inner snap. The injection mold further includes a lifter pin for forming the inner snap. The second rear mold assembly has a thimble drive plate that can move back and forth. A fixed plate is fixed on the thimble drive plate. A lateral chute perpendicular to the front-rear direction is formed on the fixed plate. The rear end of the lifter pin is hinged in the lateral chute of the fixed plate and can slide in the lateral chute. The front end thereof forms an inner snap forming structure for forming the inner snap and passes through the first rear mold assembly and the rear mold core to the product cavity respectively.

[0013] Further, the product further has an outer snap. The injection mold further includes an outer snap forming assembly for forming the outer snap. The outer snap forming assembly includes an inclined guide slider and an intermediate inclined guide block. The inclined guide slider has an outer snap forming structure for forming the outer snap and is slidably assembled on the first rear mold assembly laterally. The intermediate inclined guide block is fixed on the second front mold assembly and forms an inclined guide cooperation with the inclined guide slider. The closing or opening of the second front mold assembly and the first rear mold assembly drives the outer snap forming structure on the inclined guide slider to switch between the in-place position of inserting into the product cavity and the dislocation position of disengaging from the product cavity.

[0014] Limiting latches are provided between the first front mold assembly and the second front mold assembly, between the second front mold assembly and the first rear mold assembly, and between the first rear mold assembly and the second rear mold assembly. When the component at the front end moves forward to a dislocated position, the component at the rear end can be limited by the limiting latch, and the continued forward movement of the component at the front end drives the component at the rear end to move forward synchronously through the limiting of the limiting latch.

[0015] Furthermore, the front-to-rear straight-line distance for the front slider core to switch between the in-position position and the out-of-position position is defined as L1, and the mold also includes a sequential locking machine, which includes a fixed seat, a front limit rod and a rear limit rod. The fixed seat is fixedly arranged on the second front mold assembly and is provided with two groups of front-to-rear through-holes. The front end of the front limit rod is fixed on the first front mold assembly, and the rear end of the rear limit rod is fixed on the first rear mold assembly. In the mold closing state, the front end of the rear limit rod is passed through one group of the through holes of the fixed seat and is fastened and fixed with the fixed seat, and the rear end of the front limit rod passes through the other group of through holes of the fixed seat and extends backward by a distance of L1. The rear end of the front limit rod is formed with a trigger portion for triggering the release of the fastening of the rear limit rod with the fixed seat.

[0016] The technical solution provided by the present invention has the following beneficial effects:

[0017] The injection mold provided by the solution can well realize the injection molding of injection molded products with inclined openings, the mold structure is simple, and the demoulding qualification rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG. 1( a ) shows a schematic structural diagram of an injection molded product;

[0019] FIG1( b ) is a schematic diagram of the product shown in FIG1( a ) from another angle;

[0020] Figure 2 The figure shows a three-dimensional structural schematic diagram of the injection mold in the embodiment;

[0021] Figure 3 Shown is a side view of one side of the injection mold in the embodiment;

[0022] FIG4( a ) is a schematic structural diagram of the front mold portion of the injection mold in the embodiment;

[0023] FIG4( b ) is a schematic structural diagram of the rear mold portion of the injection mold in the embodiment;

[0024] Figure 5 The figure shows a side view of the injection mold in the embodiment when the injection mold is in the mold closing state;

[0025] Figure 6The figure shows a cross-sectional view of the injection mold in the closed mold state in the embodiment; at this time, injection molding is not carried out;

[0026] Figure 7 The figure shows a cross-sectional view of the injection mold when the product is injection molded in the embodiment;

[0027] Figure 8 The figure shows a first side view of the injection mold during the mold opening process in the embodiment; the internal structure is hidden;

[0028] Figure 9 The figure shows Figure 8 a cross-sectional view in the

[0029] Figure 10 The figure shows a side view of the injection mold during the mold opening process in the embodiment Figure 2 ; the internal structure is hidden;

[0030] Figure 11 The figure shows Figure 10 a cross-sectional view in the

[0031] Figure 12 The figure shows a side view of the injection mold during the mold opening process in the embodiment Figure 3 ; the internal structure is hidden;

[0032] Figure 13 The figure shows Figure 12 a cross-sectional view in the

[0033] Figure 14 The figure shows a cross-sectional view of the injection mold when the product is ejected in the embodiment. Detailed implementation manners

[0034] To further illustrate the embodiments, the present invention provides accompanying drawings. These accompanying drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used to explain the operating principle of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0035] At the same time, the front, rear, left, right and other orientations involved in this embodiment are only for reference of an orientation and do not represent the orientation in actual use.

[0036] Now, the present invention will be further described in conjunction with the accompanying drawings and the detailed implementation manners.

[0037] An injection mold with a two-way inclined core-pulling combined slider mechanism provided in this embodiment is used to inject the injection product 100 shown in FIGS. 1(a) and 1(b); refer to Figures 2 to 14As shown in the figure, the injection mold includes a mold body, a mold core and an opening forming assembly disposed in the mold body. The mold body includes a first front mold assembly 11, a second front mold assembly 12 and a rear mold assembly that are sequentially arranged from front to back and can move relative to each other. The first front mold assembly 11 and the second front mold assembly 12 form a front mold assembly. The mold core includes a front mold core 21 disposed on the second front mold assembly 12 and a rear mold core 22 disposed on the rear mold assembly. In the closed mold state, the front mold core 21 and the rear mold core 22 jointly enclose to form a product cavity 201.

[0038] The opening forming assembly has a front slider core 31 for forming the opening 101 of the product 100 in FIGS. 1(a) and 1(b). Front inclined chutes (not labeled) penetrating through to the product cavity 201 are provided on the second front mold assembly 12 and the front mold core 21. The front slider core 31 is slidably assembled in the front inclined chute and is in driving connection with the first front mold assembly 11. The closing or opening of the mold between the first front mold assembly 11 and the second front mold assembly 12 drives the front slider core 31 to switch between the in-place position (as shown in Figure 6 shown) of inserting into the product cavity 201 and the displaced position (as shown in Figure 9 shown) of disengaging from the product cavity 201. That is, when the first front mold assembly 11 approaches the second front mold assembly 12 for mold closing, it drives the front slider core 31 to insert into the product cavity 201 to reach the in-place position. At this time, injection molding operations can be carried out. When the first front mold assembly 11 moves away from the second front mold assembly 12 for mold opening, it drives the front slider core 31 to disengage from the product cavity 201 to reach the displaced position, realizing core pulling. After core pulling, the injection molded product 100 forms an inclined opening 101. Then, the front mold assembly (i.e., the first front mold assembly 11 and the second front mold assembly 12) moves away from the rear mold assembly, realizing the separation of the front mold core 21 and the rear mold core 22.

[0039] The injection mold provided by this solution can well realize the injection molding of the injection molded product 100 with an inclined opening 101. The mold structure is simple, and the inclined core pulling of the front slider core 31 results in a high demolding qualification rate.

[0040] Specifically, the specific structure of the transmission connection formed by the front slider core 31 and the first front mold assembly 11 is as follows: The opening forming assembly further includes a front inclined guide block 32, which is fixedly arranged on the first front mold assembly 11. An inclined guide groove (not marked) is provided on the front slider core 31, and the front inclined guide block 32 is inserted into the inclined guide groove of the front slider core 31 to achieve inclined guide cooperation with the front slider core 31. When the first front mold assembly 11 approaches the second front mold assembly 12 for mold closing, the approach of the first front mold assembly 11 drives the front slider core 31 to insert into the product cavity through the front inclined guide block 32 until it reaches the in-place position. When the first front mold assembly 11 moves forward relative to the second front mold assembly 12, the approach of the first front mold assembly 11 drives the front slider core 31 to withdraw from the product cavity 201 through the front inclined guide block 32 until it reaches the dislocated position. In this way, the transmission structure between the first front mold assembly 11 and the front slider core 31 is simple, easy to implement, and the transmission is stable. Of course, in other embodiments, other transmission methods can also be used to replace it.

[0041] Although the sliding of the front slider core 31 is directly controlled by the first front mold assembly 11 and the position of the front slider core 31 can be accurately controlled, in order to make the position of the front slider core 31 more accurate and play a limiting role, in this embodiment, the second front mold assembly 12 is also provided with limiting structures corresponding to the front end and the rear end of the front slider core 31 respectively, which play an auxiliary role through the limiting structures to prevent the front slider core 31 from excessive displacement and wear. Specifically, the limiting structure corresponding to the front end of the front slider core 31 is: a front abutting block 33 is fixed on the second front mold assembly 12 and extends horizontally to the front end opening of the front inclined slideway. When the front slider core 31 slides forward to perform core pulling and abuts against the front abutting block 33, it stops, and this is the dislocated position at this time. The limiting structure corresponding to the rear end of the front slider core 31 is a abutting step (not marked) formed on the front mold core 21. When the front slider core 31 slides backward to perform insertion and abuts against the abutting step, it stops, and this is the in-place position at this time. The above-mentioned limiting structure is easy to implement and the assembly is simple. Of course, in other embodiments, the above-mentioned limiting structure is not limited to this.

[0042] Further, in this embodiment, as shown in FIGS. 1(a) and 1(b), the front end wall of the product 100 further has through holes 102 and grooves 103 (such as grooves with trademark patterns) around the opening 101. The front slider core 31 specifically includes a front slider body, an opening forming core, a through hole forming core, and a groove forming core. The front slider body is slidably assembled in the front inclined slideway. The opening forming core, the through hole forming core, and the groove forming core are all fixed to the rear end of the front slider body and extend towards the product cavity 201. Using a single front slider core 31 can meet the forming of the opening, through holes, and grooves, and the structure is simple. Of course, in other embodiments, the forming structures of the through holes and grooves can also be realized by other independent structures. However, such a setting will make the structure more complex.

[0043] Further, in this embodiment, as shown in FIGS. 1(a) and 1(b), the inner wall surface of the product 100 further has a recess 104 located around the opening 101. The rear mold assembly includes a first rear mold assembly 13 at the rear of the second front mold assembly 12 and a second rear mold assembly 14 at the rear of the first rear mold assembly 13. The rear mold core 22 is arranged on the first rear mold assembly 13. The injection mold further includes a recess forming assembly. The recess forming assembly has a rear slider core 41 for forming the recess 104. The first rear mold assembly 13 and the rear mold core 22 are provided with a rear inclined slideway (not marked) that penetrates to the product cavity 201. The rear slider core 41 is slidably assembled in the rear inclined slideway and forms a transmission connection with the second rear mold assembly 14. The closing or opening of the mold between the first rear mold assembly 13 and the second rear mold assembly 14 drives the rear slider core 41 to switch between the in-place position (such as Figure 6 shown) of inserting into the product cavity 201 and the dislocation position (such as Figure 13 shown) of disengaging from the product cavity 201. That is, when the first rear mold assembly 13 approaches the second rear mold assembly 14 for mold closing, it drives the rear slider core 41 to insert into the product cavity 201 to reach the in-place position. At this time, injection molding operations can be carried out. When the first rear mold assembly 13 moves away from the second rear mold assembly 14 for mold opening, it drives the rear slider core 41 to disengage from the product cavity 201 to reach the dislocation position, realizing core pulling. After core pulling, a recess 104 is formed on the inner wall of the injection molded product 100. At the same time, the inclined core pulling of the rear slider core 41 results in a high qualified rate of demolding.

[0044] The opening forming assembly for forming the opening 101 is arranged in the front and is controlled by the relative movement between the first front mold assembly 11 and the second front mold assembly 12; while the recess forming assembly for forming the inner wall recess 104 is arranged in the rear and is controlled by the relative movement between the first rear mold assembly 13 and the second rear mold assembly 14; the two form a two-way inclined core-pulling combination; the structural layout is reasonable, without mutual interference, and the movement is stable. Of course, in other embodiments, the structure and the installation position of the recess forming assembly are not limited to this.

[0045] Of course, in other embodiments, if the product 100 does not have the inner wall recess 104 structure, the mold may not need to adopt the recess forming assembly, and the rear mold assembly does not need to be disassembled into the separable first rear mold assembly 13 and the second rear mold assembly 14. Or, if the product 100 has the inner wall recess and does not have the structures of the above-mentioned opening 101, through hole 102 and groove 103, the opening forming assembly may not need to be adopted, and the front mold assembly may not need to be disassembled into the separable first front mold assembly 11 and the second front mold assembly 12, that is, the first front mold assembly 11 and the second front mold assembly 12 can be made into one body. When opening the mold, directly drive the front mold assembly to move forward to separate the front mold core 21.

[0046] Furthermore, in this embodiment, the recess forming assembly further includes a rear inclined guide block 42, the rear inclined guide block 42 is fixedly arranged on the second rear mold assembly 14, a inclined guide groove (not marked) is formed on the rear slider core 41, and the rear inclined guide block 42 is inserted into the inclined guide groove of the rear slider core 41 to realize the inclined guide cooperation with the rear slider core 41. When the first rear mold assembly 13 moves close to or away from the second rear mold assembly 14, the rear slider core 41 and the rear inclined guide block 42 form a relative sliding, and drive the rear slider core 41 to slide in the rear inclined slideway through the inclined guide structure, and finally realize the switching between the in-place position (as shown in Figure 6 shown) and the dislocation position (as shown in Figure 13 shown). In this way, the transmission structure between the second rear mold assembly 14 and the rear slider core 41 is simple, easy to implement, and the transmission is stable. Of course, in other embodiments, other transmission methods can also be adopted to replace it.

[0047] More specifically, as shown in FIGS. 1(a) and 1(b), the product 100 further has an inner snap 105, and the injection mold further includes a lifter pin 51 for forming the inner snap 105. The second rear mold assembly specifically includes a base 142, a rear template 141 fixed to the base, and a thimble drive plate 143 disposed in the base 142 and capable of moving back and forth. A fixing plate 52 is fixed on the thimble drive plate 143. A lateral chute (not shown) perpendicular to the front-rear direction is formed on the fixing plate 52. The rear end of the lifter pin 51 is hinged in the lateral chute of the fixing plate 52 and can slide in the lateral chute; its front end forms an inner snap forming structure for forming the inner snap 105, and respectively passes through the first rear mold assembly 13 and the rear mold core 22 into the product cavity 201. When demolding at this position, as Figure 13 and Figure 14 shown, the thimble drive plate 143 is driven to move forward by an external drive device. The forward movement of the thimble drive plate 143 simultaneously drives the lifter pin 51 to eject upward. The upward ejection movement of the lifter pin 51 ejects the product 100 out of the rear mold core, and at the same time, the dislocation is also completed. The structure is simple and the design is ingenious. Of course, in other embodiments, the structure for forming the inner snap 105 is not limited to this.

[0048] More specifically, the product 100 further has an outer snap 106, and the injection mold further includes an outer snap forming assembly for forming the outer snap 106. The outer snap forming assembly includes an inclined guide slider 61 and an intermediate inclined guide block 62. The inclined guide slider 61 has an outer snap forming structure for forming the outer snap 106. As Figure 6 shown, the outer snap forming structure can be directly formed on the inclined guide slider 61, or can be formed on an insert 63, and the insert 63 is then connected to the inclined guide slider 61. The inclined guide slider 61 is assembled on the first rear mold assembly 13 in a laterally slidable manner. The intermediate inclined guide block 62 is fixed to the second front mold assembly 12 and forms an inclined guide fit with the inclined guide slider 61; the closing or opening of the second front mold assembly 12 and the first rear mold assembly 13 drives the outer snap forming structure on the inclined guide slider 61 to switch between the in-place position (as Figure 6 shown) inserted into the product cavity 201 and the dislocation position (as Figure 11 shown) disengaged from the product cavity 201. That is, when the second front mold assembly 12 approaches the first rear mold assembly 13, the intermediate inclined guide block 62 drives the inclined guide slider 61 to approach the product cavity 201, thereby driving the outer snap forming structure to insert into the product cavity 201 to reach the in-place position; when the second front mold assembly 12 moves away from the first rear mold assembly 13, the intermediate inclined guide block 62 drives the inclined guide slider 61 to move away from the product cavity 201, thereby driving the outer snap forming structure to disengage from the product cavity 201 to reach the dislocation position, realizing core pulling. The structure is simple and easy to implement. Of course, in other embodiments, the structure of the outer snap forming assembly is not limited to this.

[0049] A limit buckle mechanism is provided between the first front mold component 11 and the second front mold component 12, between the second front mold component 12 and the first rear mold component 13, and between the first rear mold component 13 and the second rear mold component 14. When the component at the front moves forward to the dislocated position, the component at the rear can be restricted by the limit buckle mechanism, and the continuous forward movement of the component at the front drives the component at the rear to move forward synchronously through the limit of the limit buckle mechanism.

[0050] Specifically, there are two types of limit buckle mechanisms, namely the first limit buckle mechanism and the second limit buckle mechanism; the first limit buckle mechanism is set for short-distance limit and is applicable to be arranged between the first front mold component 11 and the second front mold component 12 and between the first rear mold component 13 and the second rear mold component 14; the second limit buckle mechanism is set for long-distance limit and is applicable to be arranged between the second front mold component 12 and the first rear mold component 13.

[0051] More specifically, the first limit buckle mechanism is realized by a limit screw. When arranged between the first front mold component 11 and the second front mold component 12, define the front-back linear distance for the front slider core 31 to switch between the in-place position and the dislocated position as L1. A limit slot hole (defined as the first limit slot hole 72) is opened on the second front mold component 12. The limit screw (defined as the first limit screw 71) is accommodated in the first limit slot hole 72 and passes through the second front mold component 12 and is fixed on the first front mold component 11. In the closed mold state, the nut 711 of the first limit screw 71 has a distance of L1 from the bottom of the first limit slot hole 72 (as Figure 5 shown). When the first front mold component 11 moves away from the second front mold component 12 by a distance of L1, the front slider core 31 reaches the dislocated position. At the same time, the nut 711 of the first limit screw 71 just abuts against the bottom of the first limit slot hole 72 (as Figure 8 shown); the continuous forward movement of the first front mold component 11 drives the second front mold component 12 to move forward synchronously through the abutting cooperation between the nut 711 of the first limit screw 71 and the first limit slot hole 72. In this way, the second front mold component 12 can be driven to move forward synchronously through a simple limit structure, with precise cooperation and simple structure.

[0052] Another example is when arranged between the first rear mold component 13 and the second rear mold component 14. Define the front-back linear distance for the rear slider core 41 to switch between the in-place position and the dislocated position as L2. A limit slot hole (defined as the second limit slot hole 74) is opened on the first rear mold component 13. The limit screw (defined as the second limit screw 73) is accommodated in the second limit slot hole 74 and passes through the first rear mold component 13 and is fixed on the second rear mold component 14. In the closed mold state, the nut 731 of the second limit screw 73 has a distance of L2 from the bottom of the second limit slot hole 74 (as Figure 5As shown in FIG. 1 , when the first rear mold assembly 13 moves away from the second rear mold assembly 14 to a distance L2, the rear slider core 41 reaches the dislocation position, and at the same time, the nut 731 of the second limiting screw 73 just abuts against the bottom of the second limiting slot 74 (as shown in FIG. 1 ). Figure 12 As shown); realize the limit. In this way, the first rear mold assembly 13 can be limited from continuing to move forward by a simple limit structure, with precise matching and simple structure.

[0053] The mold opening distance between the second front mold assembly 12 and the first rear mold assembly 13 is defined as L3, and the second limit button machine is implemented by a connecting rod 75. Specifically, a limit pin 76 is fixed on the second front mold assembly 12 and the first rear mold assembly 13 respectively. The axial extension direction of the connecting rod 75 is the front-to-back direction, and two limit long holes 751 are opened along its axial extension direction. The limit pins 76 on the second front mold assembly 12 and the first rear mold assembly 13 are respectively penetrated in the two limit long holes 751. When the second front mold assembly 12 moves forward by a distance of L3 relative to the first rear mold assembly 13, the mold opening between the second front mold assembly 12 and the first rear mold assembly 13 is completed. At this time, the two limit pins 76 are respectively in contact with the outer ends of the two limit long holes 751 (such as Figure 10 As shown), at this time, the continued forward movement of the second front mold assembly 12 can drive the first rear mold assembly 13 to move synchronously. In this way, the first rear mold assembly 13 can be driven to move forward synchronously through a simple limiting structure, with precise matching and simple structure.

[0054] Of course, in other embodiments, the structure of the position limiting buckle machine is not limited to this.

[0055] Furthermore, in this embodiment, the mold also includes a sequential locking machine, which includes a fixed seat 81, a front limit rod 82 and a rear limit rod 83. The fixed seat 81 is fixedly arranged on the second front mold assembly 12, and is provided with two groups of front-to-back through-holes (not shown). The front end of the front limit rod 82 is fixed to the first front mold assembly 11, and the rear end of the rear limit rod 83 is fixed to the first rear mold assembly 13. In the mold closing state, the front end of the rear limit rod 83 is passed through one group of the through holes of the fixed seat 81 and is fastened and fixed with the fixed seat 81, and the rear end of the front limit rod 82 passes through the other group of through holes of the fixed seat 81 and extends backward by a distance L1. The rear end of the front limit rod 81 is formed with a trigger part for triggering the release of the fastening of the rear limit rod 83 with the fixed seat 81.

[0056] Specifically, refer to Figure 2 , Figure 3 As shown, the sequential locking machine also includes a sliding block 85 and an elastic member 84 disposed in the fixed seat 81, and the sliding block 85 can slide laterally (such as Figure 3 The two ends of the sliding block 85 in the lateral sliding direction are respectively the first end (Figure 3 the left end in) and the second end ( Figure 3 the right end in), a relief opening for the front limit rod 82 to pass through is provided at the middle position of the sliding block 85. The elastic member 84 is arranged between the fixed seat 81 and the first end of the sliding block 85, and applies an elastic force towards the second end of the sliding block 85 to the sliding block 85. The front end of the rear limit rod 83 has a clamping joint 831, and is clamped to the second end of the sliding block 85 through the clamping joint 831. The triggering part of the front limit rod 82 is a convex part 821 protruding and extending towards the first end direction of the sliding block 85. When the first front mold assembly 11 moves forward by a distance L1, the convex part 821 of the first front limit rod 82 enters the relief opening of the sliding block 85, and pushes the sliding block 85 to slide towards the first end direction against the elastic force of the elastic member 84, so that the second end of the sliding block 85 is separated from the clamping joint 831 of the rear limit rod 83, thereby realizing the unlocking of the second front mold assembly 12 and the first rear mold assembly 13. The structural design is simple and easy to implement. Of course, in other embodiments, the sequential unlocking structure is not limited to this.

[0057] The specific demolding steps of the product in the injection mold provided by this solution are as follows:

[0058] The first step, as Figure 7 shown, after injection molding is completed, drive the first front mold assembly 11 to move forward. The forward movement of the first front mold assembly 11 relative to the second front mold assembly 12 can realize the core pulling of the front slider core 31. After moving forward by a distance L1, the front slider core 31 completes the core pulling and reaches the dislocation position, as Figure 8 、 Figure 9 shown. At this time, the nut 711 of the first limit screw 71 just abuts against the bottom of the first limit slot hole 72; and the rear end of the front limit rod 82 enters the fixed seat 81 and triggers the unlocking (that is, releases the buckling connection between the rear limit rod 83 and the fixed seat 81).

[0059] The second step: The continuous forward movement of the first front mold assembly 11 drives the second front mold assembly 12 to move forward synchronously through the abutting cooperation between the nut 711 of the first limit screw 71 and the first limit slot hole 72; the front mold core 21 begins to disengage, exposing the surface of the injection molded product; the outer snap forming assembly also begins to dislocate; when moving forward by a distance L3 continuously, the two limit pins 76 respectively abut against the outer ends of the two limit long holes 751; at this time, the mold opening action of the second front mold assembly 12 is completed, as Figure 10 、 Figure 11 shown.

[0060] Step 3: The continuous forward movement of the first front mold component 11 and the second front mold component 12 drives the first rear mold component 13 to move forward synchronously through the sequential locking mechanism; the first rear mold component 13 starts to disengage. During this process, the rear slider core 41 performs core pulling. When the first rear mold component 13 moves forward by a distance of L2, the rear slider core 41 completes core pulling. At the same time, the nut 731 of the second limit screw 73 just abuts against the bottom of the second limit slot 74; thus, limiting is achieved, as Figure 12 , Figure 13 shown.

[0061] Specifically, during this process, since the angled ejector rod 51 is always restricted, when the first rear mold component 13 moves forward, it will drive the angled ejector rod 51 and the ejector pin drive plate 143 to move forward synchronously by a distance of L3.

[0062] Step 4: Drive the ejector pin drive plate 143 to move forward through an external drive device. The forward movement of the ejector pin drive plate 143 simultaneously drives the angled ejector rod 51 to eject upward. The upward movement of the angled ejector rod 51 completes the dislocation, and at the same time, the product 100 is ejected from the rear mold core, completing the demolding of the product 100, as Figure 14 shown.

[0063] This mold has successfully completed the injection molding of the above product structure, with a simple structure and ingenious design.

[0064] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims, and all such changes are within the protection scope of the present invention.

Claims

1. An injection mold with a two-way inclined core-pulling combined slider mechanism is used for an injection-molded product having an inclined front wall and an opening provided on the front wall; It is characterized in that: It includes a mold body, a mold core and an opening forming component arranged in the mold body. The mold body includes a first front mold component, a second front mold component and a rear mold component which are arranged in sequence from front to back and can move relatively. The mold core includes a front mold core arranged on the second front mold component and a rear mold core arranged on the rear mold component. And in the mold-closed state, the front mold core and the rear mold core jointly enclose to form a product cavity; The opening forming component has a front slider core for forming the opening; a front inclined slideway penetrating through to the product cavity is opened on the second front mold component and the front mold core. The front slider core is slidably assembled in the front inclined slideway and forms a transmission connection with the first front mold component; the mold closing or mold opening between the first front mold component and the second front mold component drives the front slider core to switch between the in-place position inserted into the product cavity and the displaced position disengaged from the product cavity; The inner wall surface of the product also has a recess located outside the opening. The rear mold component includes a first rear mold component located at the rear end of the second front mold component and a second rear mold component located at the rear end of the first rear mold component. The rear mold core is arranged on the first rear mold component; the injection mold also includes a recess forming component. The recess forming component has a rear slider core for forming the recess. A rear inclined slideway penetrating through to the product cavity is opened on the first rear mold component and the rear mold core. The rear slider core is slidably assembled in the rear inclined slideway and forms a transmission connection with the second rear mold component; the mold closing or mold opening between the first rear mold component and the second rear mold component drives the rear slider core to switch between the in-place position inserted into the product cavity and the displaced position disengaged from the product cavity.

2. The injection mold with a two-way inclined core-pulling combined slider mechanism according to claim 1, It is characterized in that: The opening forming component further includes a front inclined guide block. The front inclined guide block is fixedly arranged on the first front mold component. An inclined guide groove is opened on the front slider core. The front inclined guide block is inserted into the inclined guide groove of the front slider core to realize the inclined guide cooperation with the front slider core.

3. The injection mold with a two-way inclined core-pulling combined slider mechanism according to claim 2, It is characterized in that: The second front mold component is further provided with limit structures corresponding to the front end and the rear end of the front slider core respectively.

4. The injection mold with a two-way inclined core-pulling combined slider mechanism according to claim 1, It is characterized in that: The front wall of the product also has a through hole and a groove outside the opening. The front slider core specifically includes a front slider body, an opening forming core, a through hole forming core and a groove forming core; the front slider body is slidably assembled in the front inclined slideway. The opening forming core, the through hole forming core and the groove forming core are all fixed to the rear end part of the front slider body and extend towards the product cavity direction.

5. The injection mold with a two-way inclined core-pulling combined slider mechanism according to claim 1, It is characterized in that: The recessed portion forming assembly also includes a rear oblique guide block, which is fixedly disposed on the second rear mold assembly. An oblique guide groove is provided on the rear slider core. The rear oblique guide block is inserted into the oblique guide groove of the rear slider core to achieve oblique guide cooperation with the rear slider core.

6. The bidirectional oblique core-pulling combined slider mechanism injection mold according to claim 1, Features: The product also has an inner buckle, and the injection mold also includes an inclined ejector rod for molding the inner buckle, and the second rear mold assembly has an ejector drive plate that can move forward and backward, and a fixed plate is fixed on the ejector drive plate, and a lateral slide groove perpendicular to the front and rear direction is opened on the fixed plate, and the rear end of the inclined ejector rod is hinged in the lateral slide groove of the fixed plate and can slide in the lateral slide groove; The front end thereof is formed with an inner buckle molding structure for molding the inner buckle, and passes through the first rear mold component and the rear mold core into the product cavity respectively.

7. The bidirectional oblique core-pulling combined slider mechanism injection mold according to claim 1, Features: The product also has an external buckle, and the injection mold also includes an external buckle molding component for molding the external buckle, the external buckle molding component includes an inclined guide slider and an intermediate inclined guide block, the inclined guide slider has an external buckle molding structure for molding the external buckle, and can be laterally slidably assembled on the first rear mold assembly, the intermediate inclined guide block is fixed on the second front mold assembly and forms an inclined guide fit with the inclined guide slider; the closing or opening of the second front mold assembly and the first rear mold assembly drives the external buckle molding structure on the inclined guide slider to switch between the in-place position inserted into the product cavity and the dislocated position detached from the product cavity.

8. The bidirectional oblique core-pulling combined slider mechanism injection mold according to claim 1, Features: Limiting latches are provided between the first front mold assembly and the second front mold assembly, between the second front mold assembly and the first rear mold assembly, and between the first rear mold assembly and the second rear mold assembly. When the component at the front end moves forward to a dislocated position, the component at the rear end can be limited by the limiting latch, and the continued forward movement of the component at the front end drives the component at the rear end to move forward synchronously through the limiting of the limiting latch.

9. The bidirectional oblique core-pulling combined slider mechanism injection mold according to claim 1, Features: The front-to-rear straight-line distance for the front slider core to switch between the in-position position and the out-of-position position is defined as L1. The mold also includes a sequential locking machine, which includes a fixed seat, a front limit rod and a rear limit rod. The fixed seat is fixedly arranged on the second front mold assembly and is provided with two groups of front-to-rear through-holes. The front end of the front limit rod is fixed on the first front mold assembly, and the rear end of the rear limit rod is fixed on the first rear mold assembly. In the mold closing state, the front end of the rear limit rod is passed through one group of the through holes of the fixed seat and is fastened and fixed with the fixed seat, and the rear end of the front limit rod passes through the other group of through holes of the fixed seat and extends backward by a distance of L1. The rear end of the front limit rod is formed with a trigger part for triggering the release of the fastening of the rear limit rod with the fixed seat.

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