A high-precision plastic mold with multiple pins

Abstract

The invention discloses a multi-pin high-precision plastic mold, which relates to the technical field of plastic molds, and includes a front mold device and a rear mold device, wherein the front mold device includes a front mold core component and a shovel base component, and the rear mold device includes a rear mold entry component and a slide component, and an injection molding component is arranged between the rear mold entry component and the front mold core component, and a front mold pin is arranged in the front mold core component, and a rear mold pin is arranged in the rear mold entry component, and the slide component includes a slide seat and a slide entry, and a first inclined surface and a first vertical surface are arranged on the side of the slide seat, and the shovel base component includes a delay structure, and the delay structure includes a second inclined surface and a second vertical surface. The invention has the advantages of good injection molding effect, high mold clamping precision, and safety and reliability.

Description

Technical Field

[0001] The invention relates to the technical field of plastic moulds, and in particular to a multi-pin high-precision plastic mould. Background Art

[0002] A plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. The coordinated changes of the mold's convex and concave molds and the auxiliary molding system can process a series of plastic parts of different shapes and sizes. Inlay pins are needed in some plastic molds. The inlay pins will press the mold cavity to stabilize it and also serve as a vent to allow the mold core to be better processed. When required by some product structures with holes or other product structures, the inlay pins can also be extended into the cavity to participate in molding. In all of the above situations, based on the plastic mold closing process, the inlay pins will follow the moving parts and extend into other moving parts. If the closing precision is poor and there is a certain error, or if the moving parts undergo unnecessary displacement after closing, the inlay pin end will be unreliable in contact, bent or broken, affecting the entire plastic mold molding process. Summary of the invention

[0003] In view of the defects in the prior art, the present invention provides a multi-pin high-precision plastic mold.

[0004] A multi-pin high-precision plastic mold, comprising a front mold device and a rear mold device that can move toward each other, the front mold device comprising a front mold core assembly and two shovel base assemblies respectively arranged on both sides of the front mold core assembly, the rear mold device comprising a rear mold entry subassembly and two slide assemblies respectively arranged on both sides of the rear mold entry subassembly, the rear mold entry subassembly is arranged opposite to the front mold core assembly, an injection molding assembly is arranged between the rear mold entry subassembly and the front mold core assembly, a front mold inlay pin is arranged in the front mold core assembly, a rear mold inlay pin is arranged in the rear mold entry subassembly, the front mold inlay pin and the rear mold inlay pin can penetrate the injection molding assembly; wherein, the slide assembly comprises a slide seat that can move left and right and a slide insert fixed on the slide seat, the slide insert is used to extend between the rear mold entry subassembly and the front mold core assembly after moving left and right and contact the front mold inlay pin. Needle and the rear mold insert needle; the side of the slider seat is provided with a first inclined surface and a first vertical surface located below the first inclined surface, the shovel base assembly includes a delay structure, the delay structure includes a second inclined surface and a second vertical surface located above the second inclined surface, the first inclined surface and the second inclined surface are inclined and have the same inclination angle; after the shovel base assembly and the slider assembly move toward each other, the second inclined surface can contact and squeeze the first inclined surface, so that the delay structure can push the slider seat to move left and right, and after the slider seat moves, it can drive the slider insert to extend between the rear mold insert assembly and the front mold core assembly, when the second inclined surface and the first inclined surface are separated, and the second vertical surface and the first vertical surface are in contact, the slider insert contacts the front mold insert needle and the rear mold insert needle.Before the entire plastic mold is used, the front mold device and the rear mold device are separated, and the relative positions of the shovel base assembly and the front mold core assembly in the front mold device are kept constant. At this time, the two slider assemblies in the rear mold device are located on both sides of the rear mold entry subassembly, and the front mold core assembly is opposite to the rear mold entry subassembly, and the injection molding assembly is located between the front mold core assembly and the rear mold entry subassembly; when the plastic mold is in use, the rear mold device is pushed toward the front mold device, or the front mold device is moved toward the rear mold device, so that the front mold core assembly is close to the rear mold entry subassembly, and the two slider assemblies are close to the two shovel base assemblies respectively, until the second inclined surface of the delay structure at the bottom of the shovel base assembly contacts the first inclined surface of the slider seat in the slider assembly, and after the second inclined surface continues to move, since the slider seat can move left and right, the slider seat will move along the left and right directions and gradually move toward the rear mold entry subassembly, so that the slider on the slider seat extends to above the rear mold entry subassembly, that is, between the front mold core assembly and the rear mold entry subassembly, by designing the first inclined surface, the second inclined surface, the first vertical surface and the second vertical surface with preset sizes in advance. , ensuring that when the first inclined surface and the second inclined surface are separated, the first vertical surface contacts the second vertical surface, and more importantly, at this time, the two slide inserts just contact the front mold inlay pin and the rear mold inlay pin, and the two slide inserts seal the ends of the front mold inlay pin and the rear mold inlay pin. In this way, due to the relative movement between the first vertical surface and the second vertical surface, the slide seat will not move left and right. At this time, the injection molding operation can be started through the injection molding component. The entire plastic mold fully utilizes the relative movement of the first inclined surface and the second inclined surface through the delay structure and the setting of the slide seat to ensure the reliable movement of the slide assembly, thereby ensuring the reliable positioning and molding of the injection molding component, and when the front mold inlay pin and the rear mold inlay pin are contacted and limited by the two slide inserts, the first vertical surface and the second vertical surface begin to contact, ensuring that the front mold device and the rear mold device continue to approach, while the slide insert cannot move left and right at all, thereby improving the mold closing accuracy and effectively avoiding the unreliable contact, bending or breakage damage between the front mold inlay pin and the rear mold inlay pin, thereby improving the injection molding effect.

[0005] Preferably, the front mold device also includes an inclined guide column assembly, which includes an inclined guide column body, an inclined through hole is opened on the sliding seat, and the inclined guide column body, the inclined through hole, the first inclined surface and the second inclined surface are inclined and have the same inclination angle; wherein the inclined guide column body can penetrate into the inclined through hole and contact the inner wall of the inclined through hole. After the first vertical surface and the second vertical surface begin to contact, the inclined guide column body can be inserted into the inclined through hole; when the injection molding is completed, the entire front mold device and the rear mold device need to be reset, and the shovel base assembly begins to move and begins to move away from the slider seat. If there is no inclined guide column body, the entire slider seat will not move, and the slider insert will still extend to the top of the rear mold insert assembly. After the inclined guide column body and the inclined through hole are set, the inclined guide column body and the inclined through hole will move relative to each other, and the inclined guide column body will contact the inclined through hole and move along the surface of the inclined through hole, just like the first inclined surface and the second inclined surface. The inclined guide column body will drive the entire slider seat to move left and right, thereby bringing the two slider inserts out of the top of the rear mold insert assembly respectively, thereby exposing the entire injection molding assembly.

[0006] Preferably, the inner diameter of the inclined guide column body is smaller than the inner diameter of the inclined through hole, and a delay gap is formed between the inclined through hole and the inclined guide column body entering therein. It is necessary to ensure that the inner diameter of the inclined guide column body is smaller than the inner diameter of the inclined through hole, that is, there is enough space in the inclined through hole for the inclined guide column body to move left and right to a certain extent; in this way, it can be ensured that the movement of the entire slide seat is driven by the relative movement between the first inclined surface and the second inclined surface, and the entire inclined guide column will not affect the process of the slide insert entering the rear mold insert assembly. At the same time, only under this condition, after the first inclined surface and the second inclined surface are separated, the first vertical surface and the second vertical surface can contact and move relative to each other.

[0007] Preferably, the injection molding assembly includes a hot nozzle inserted into the front mold core assembly, the hot nozzle is connected to a mold cavity arranged between the rear mold insertion subassembly and the front mold core assembly. The hot nozzle is injected with injection material, and the injection material flows into the mold cavity and is cooled to form a plastic product.

[0008] Preferably, a hot runner is provided in the front mold insert pin and the rear mold insert pin, and the hot runner is connected to the mold cavity. The front mold insert pin and the rear mold insert pin are connected to the mold cavity, which can not only assist the mold cavity to form a hole or other arc-shaped structure on the plastic product, but also complete the process of injection molding material flowing in through the hot runner therein.

[0009] Preferably, the shovel base assembly further comprises a shovel base body, the delay structure is arranged at the bottom of the shovel base body, a third inclined surface is provided on the side of the shovel base body, the third inclined surface is inclined and has the same inclination angle as the first inclined surface, and when the slider contacts the front mold insert pin and the rear mold insert pin, the third inclined surface contacts the first inclined surface. The third inclined surface is provided on the side of the shovel base body, and when the first vertical surface and the second vertical surface move relatively, until the third inclined surface can directly contact the first inclined surface, the stability of the slider seat is further improved by using the shovel base body.

[0010] Preferably, a limiting groove is provided at the bottom of the shovel base, and the delay structure is fixed in the limiting groove. The limiting groove forms a fixed space, which is convenient for installation and removal of the delay structure.

[0011] Preferably, the delay structure further comprises a delay block, the side of the delay block forms the second inclined surface and the second vertical surface, and the delay block is fixed in the limiting groove. The delay block is fixed in the limiting groove by a threaded connection structure.

[0012] Preferably, a limiting slide groove is provided on the side of the slider seat, the upper half of the bottom surface of the limiting slide groove forms the first inclined surface and the lower half forms the first vertical surface, the delay block can extend into the limiting slide groove, and when the delay block extends into the limiting slide groove, the side wall of the delay block contacts the side wall of the limiting slide groove. The first inclined surface and the first vertical surface are formed in the limiting slide groove, and the movement of the slider seat in the non-mold clamping direction is limited by the contact between the side wall of the delay block and the side wall of the limiting slide groove, thereby ensuring the mold clamping reliability of the slider seat.

[0013] Preferably, there are a plurality of limit grooves, a plurality of delay blocks, and the plurality of delay blocks are fixed in the plurality of limit grooves respectively. The plurality of delay blocks can improve the driving reliability of the large-size row seat.

[0014] The beneficial effects of the present invention are embodied in:

[0015] In the present invention, before the entire plastic mold is used, the front mold device and the rear mold device are separated, the relative positions of the shovel base assembly and the front mold core assembly in the front mold device are kept constant, and the two slider assemblies in the rear mold device are located on both sides of the rear mold entry subassembly at this time, the front mold core assembly is opposite to the rear mold entry subassembly, and the injection molding assembly is located between the front mold core assembly and the rear mold entry subassembly; when the plastic mold is in use, by pushing the rear mold device toward the front mold device, or the front mold device toward the rear mold device, the front mold core assembly is close to the rear mold entry subassembly, and the two slider assemblies are close to the two shovel base assemblies respectively, until the second inclined surface of the delay structure at the bottom of the shovel base assembly contacts the first inclined surface of the slider seat in the slider assembly, and after the second inclined surface continues to move, since the slider seat can move left and right, the slider seat will move along the left and right directions and gradually move toward the rear mold entry subassembly, so that the slider on the slider seat extends to above the rear mold entry subassembly, that is, between the front mold core assembly and the rear mold entry subassembly, by designing the first inclined surface, the second inclined surface, the first vertical surface and the second vertical surface with preset sizes in advance. The first and second vertical surfaces are connected to each other to ensure that the front and rear mold pins are in contact with each other, and the two sliders are connected to the front and rear mold pins to ensure that the front and rear mold pins are in contact with each other.

[0016] It should also be noted that the present invention makes the front mold pins and the rear mold pins of the front mold device and the rear mold device less likely to break, and can make the front mold pins, the rear mold pins and the slide inserts cooperate more closely and reliably. The specific implementation method is as follows: by adding a delay block, when the mold is closed, the slide seat has been pushed to the end position by the delay block, while the slide pins or the parting surface are still several millimeters away. At this time, the delay block and the slide seat inclined surface finish working and become in vertical contact, thereby ensuring that the slide seat is reliably positioned until the entire mold is completely closed and the injection molding is completed. When the mold is opened, the front mold pins or the parting surface leave in advance, while the slide seat does not move until the vertical surfaces between the delay block and the slide seat are separated. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0018] Figure 1 It is a structural stereogram of a part of the structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 Structural cross-sectional view of

[0020] Figure 3 For the present invention Figure 1 The structural stereogram without the front mold core assembly;

[0021] Figure 4 It is a structural stereogram of the partial structures of the shovel base assembly, the sliding assembly and the inclined guide column assembly of the present invention;

[0022] Figure 5 It is a structural stereogram of the shovel base assembly, the sliding seat and the inclined guide column assembly of the present invention;

[0023] Figure 6 It is a structural stereogram of the shovel base assembly of the present invention;

[0024] Figure 7 It is a structural stereogram of the sliding seat of the present invention.

[0025] Reference numerals:

[0026] 1-front mold core assembly, 2-shovel base assembly, 21-delay structure, 211-second inclined surface, 212-second vertical surface, 213-delay block, 22-shovel base body, 221-third inclined surface, 222-limiting groove, 3-rear mold insert assembly, 4-slide assembly, 41-slide seat, 411-first inclined surface, 412-first vertical surface, 413-inclined through hole, 414-limiting slide groove, 42-slide insert, 5-injection molding assembly, 51-hot nozzle, 52-mold cavity, 6-front mold insert pin, 7-rear mold insert pin, 8-inclined guide column assembly, 81-inclined guide column body, 82-delay gap. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] like Figures 1 to 7As shown, a multi-pin high-precision plastic mold comprises a front mold device and a rear mold device which can move toward each other, the front mold device comprises a front mold core component 1 and two shovel base components 2 respectively arranged on both sides of the front mold core component 1, the rear mold device comprises a rear mold entry sub-component 3 and two slide components 4 respectively arranged on both sides of the rear mold entry sub-component 3, the rear mold entry sub-component 3 is arranged opposite to the front mold core component 1, an injection molding component 5 is arranged between the rear mold entry sub-component 3 and the front mold core component 1, a front mold inlay pin 6 is arranged in the front mold core component 1, a rear mold inlay pin 7 is arranged in the rear mold entry sub-component 3, and the front mold inlay pin 6 and the rear mold inlay pin 7 can penetrate the injection molding component 5; wherein, the slide component 4 comprises a slide seat 41 which can move left and right and a slide insert 42 fixed on the slide seat 41, the slide insert 42 is used to extend between the rear mold entry sub-component 3 and the front mold core component 1 after moving left and right and contact the front mold inlay pin 6 and the rear mold inlay pin 7; the side of the slide seat 41 A first inclined surface 411 and a first vertical surface 412 located below the first inclined surface 411 are provided, the shovel base assembly 2 includes a delay structure 21, the delay structure 21 includes a second inclined surface 211 and a second vertical surface 212 located above the second inclined surface 211, the first inclined surface 411 and the second inclined surface 211 are inclinedly arranged and have the same inclination angle; after the shovel base assembly 2 and the slider assembly 4 move toward each other, the second inclined surface 211 can contact and squeeze the first inclined surface 411, so that the delay structure 21 can push the slider seat 41 to move left and right, and after the slider seat 41 moves, it can drive the slider insert 42 to extend between the rear mold insert assembly 3 and the front mold core assembly 1, and when the second inclined surface 211 and the first inclined surface 411 are separated, and the second vertical surface 212 and the first vertical surface 412 are in contact, the slider insert 42 contacts the front mold insert pin 6 and the rear mold insert pin 7.

[0032] In the present embodiment, it should be noted that, before the entire plastic mold is used, the front mold device and the rear mold device are separated, the relative positions of the shovel base component 2 and the front mold core component 1 in the front mold device are kept constant, and the two slider components 4 in the rear mold device are located on both sides of the rear mold entry sub-component 3 at this time, the front mold core component 1 is directly opposite to the rear mold entry sub-component 3, and the injection molding component 5 is located between the front mold core component 1 and the rear mold entry sub-component 3; when the plastic mold is in use, by pushing the rear mold device toward the front mold device, or the front mold device toward the rear mold device, the front mold core component 1 is close to the rear mold entry sub-component 3, and the two slider components 4 are close to the two shovel base components 2 respectively. , until the second inclined surface 211 of the delay structure 21 at the bottom of the shovel base assembly 2 contacts the first inclined surface 411 of the slider seat 41 in the slider assembly 4. After the second inclined surface 211 continues to move, since the slider seat 41 can move left and right, the slider seat 41 will move along the left and right directions and gradually move toward the rear mold insertion subassembly 3, so that the slider 42 on the slider seat 41 extends to the top of the rear mold insertion subassembly 3, that is, between the front mold core assembly 1 and the rear mold insertion subassembly 3. By designing the first inclined surface 411, the second inclined surface 211, the first vertical surface 412 and the second vertical surface 413 of the preset size in advance, The first vertical surface 412 is in contact with the second vertical surface 212 to ensure that when the first inclined surface 411 and the second inclined surface 211 are separated, the first vertical surface 412 contacts the second vertical surface 212. More importantly, at this time, the two slider inserts 42 just contact the front mold insert needle 6 and the rear mold insert needle 7. The two slider inserts 42 seal the ends of the front mold insert needle 6 and the rear mold insert needle 7. In this way, the relative movement between the first vertical surface 412 and the second vertical surface 212 will not allow the slider seat 41 to move left and right. At this time, the injection molding operation can be started through the injection molding component 5. The entire plastic mold is fully arranged by the delay structure 21 and the slider seat 41. The relative movement of the first inclined surface 411 and the second inclined surface 211 is utilized to ensure the reliable movement of the slide assembly 4, thereby ensuring the reliable positioning and molding of the injection molding assembly 5, and when the front mold insert 6 and the rear mold insert 7 are contacted and limited by the two slide inserts 42, the first vertical surface 412 and the second vertical surface 212 begin to contact, ensuring that the front mold device and the rear mold device continue to approach each other while the slide insert 42 is completely unable to move left and right, thereby improving the mold closing accuracy and effectively avoiding the occurrence of unreliable contact, bending or breakage damage between the front mold insert 6 and the rear mold insert 7, thereby improving the injection molding effect.

[0033] Specifically, the front mold device also includes an inclined guide column assembly 8, which includes an inclined guide column body 81. An inclined through hole 413 is opened on the sliding seat 41. The inclined guide column body 81, the inclined through hole 413, the first inclined surface 411 and the second inclined surface 211 are inclinedly arranged and have the same inclination angle; wherein the inclined guide column body 81 can penetrate into the inclined through hole 413 and contact the inner wall of the inclined through hole 413.

[0034] In the present embodiment, it should be noted that after the first vertical surface 412 and the second vertical surface 212 begin to contact, the inclined guide column body 81 can be inserted into the inclined through hole 413; when the injection molding is completed, the entire front mold device and the rear mold device need to be reset, and at this time the shovel base assembly 2 begins to move and begins to move away from the slider seat 41. If there is no inclined guide column body 81, the entire slider seat 41 will not move, and the slider insert 42 will still extend to the top of the rear mold insert subassembly 3. After the inclined guide column body 81 and the inclined through hole 413 are provided, the inclined guide column body 81 and the inclined through hole 413 will move relative to each other, and the inclined guide column body 81 will contact the inclined through hole 413 and move along the surface of the inclined through hole 413, just like the first inclined surface 411 and the second inclined surface 211, the inclined guide column body 81 will drive the entire slider seat 41 to move left and right, thereby bringing the two slider inserts 42 out of the top of the rear mold insert subassembly 3 respectively, thereby exposing the entire injection molding assembly 5.

[0035] Specifically, the inner diameter of the inclined guide post body 81 is smaller than the inner diameter of the inclined through hole 413 , and a delay gap 82 is formed between the inclined through hole 413 and the inclined guide post body 81 entering therein.

[0036] In the present embodiment, it should be noted that it is necessary to ensure that the inner diameter of the inclined guide column body 81 is smaller than the inner diameter of the inclined through hole 413, that is, there is enough space in the inclined through hole 413 to allow the inclined guide column body 81 to move left and right to a certain extent; in this way, it can be ensured that the movement of the entire slide seat 41 is driven by the relative movement between the first inclined surface 411 and the second inclined surface 211, and the entire inclined guide column will not affect the process of the slide insert 42 entering the top of the rear mold insert assembly 3. At the same time, only under this condition, after the first inclined surface 411 and the second inclined surface 211 are separated, the first vertical surface 412 and the second vertical surface 212 can contact and move relative to each other.

[0037] Specifically, the injection molding assembly 5 includes a hot nozzle 51 that is inserted into the front mold core assembly 1 , and the hot nozzle 51 is connected to a mold cavity 52 that is arranged between the rear mold insertion subassembly 3 and the front mold core assembly 1 .

[0038] In this embodiment, it should be noted that the injection material is injected into the hot nozzle 51, and the injection material flows into the mold cavity 52 and is cooled to form a plastic product.

[0039] Specifically, hot runners are provided in the front mold insert pin 6 and the rear mold insert pin 7 , and the hot runners are connected to the mold cavity 52 .

[0040] In this embodiment, it should be noted that the front mold insert pin 6 and the rear mold insert pin 7 are connected to the mold cavity 52, which can not only assist the mold cavity 52 to form holes or other arc structures on the plastic product, but also complete the process of injection material flowing in through the hot runner therein.

[0041] Specifically, the shovel base assembly 2 also includes a shovel base body 22, the delay structure 21 is arranged at the bottom of the shovel base body 22, and a third inclined surface 221 is opened on the side of the shovel base body 22. The third inclined surface 221 is inclined and has the same inclination angle as the first inclined surface 411. When the row position insert 42 contacts the front mold insert pin 6 and the rear mold insert pin 7, the third inclined surface 221 contacts the first inclined surface 411.

[0042] In this embodiment, it should be noted that a third inclined surface 221 is provided on the side of the shovel basic body 22. When the first vertical surface 412 and the second vertical surface 212 move relative to each other, the third inclined surface 221 can directly contact the first inclined surface 411, thereby utilizing the shovel basic body 22 to further improve the stability of the sliding seat 41.

[0043] Specifically, a limiting groove 222 is provided at the bottom of the shovel base, and the delay structure 21 is fixed in the limiting groove 222 .

[0044] In this embodiment, it should be noted that the limiting groove 222 forms a fixed space to facilitate the installation and disassembly of the delay structure 21.

[0045] Specifically, the delay structure 21 further includes a delay block 213 , a second inclined surface 211 and a second vertical surface 212 are formed on the side of the delay block 213 , and the delay block 213 is fixed in the limiting groove 222 .

[0046] In this embodiment, it should be noted that the delay block 213 is fixed in the limiting groove 222 via a threaded connection structure.

[0047] Specifically, a limiting groove 414 is provided on the side of the positioning seat 41, the upper half of the bottom surface of the limiting groove 414 forms a first inclined surface 411 and the lower half forms a first vertical surface 412, the delay block 213 can extend into the limiting groove 414, and when the delay block 213 extends into the limiting groove 414, the side wall of the delay block 213 contacts the side wall of the limiting groove 414.

[0048] In this embodiment, it should be noted that a first inclined surface 411 and a first vertical surface 412 are formed in the limiting slide groove 414, and the side wall of the delay block 213 contacts the side wall of the limiting slide groove 414 to limit the movement of the slider seat 41 in the non-closing direction, thereby ensuring the clamping reliability of the slider seat 41.

[0049] Specifically, a plurality of limiting grooves 222 are provided, a plurality of delay blocks 213 are provided, and the plurality of delay blocks 213 are respectively fixed in the plurality of limiting grooves 222 .

[0050] In this embodiment, it should be noted that the plurality of delay blocks 213 can improve the reliability of pushing the large-sized row seat 41 .

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A high-precision plastic mold with multiple pins. It is characterized in that It comprises a front mold device and a rear mold device which can move towards each other, the front mold device comprises a front mold core component and two shovel base components respectively arranged on both sides of the front mold core component, the rear mold device comprises a rear mold entry sub-component and two slide position components respectively arranged on both sides of the rear mold entry sub-component, the rear mold entry sub-component is arranged opposite to the front mold core component, an injection molding component is arranged between the rear mold entry sub-component and the front mold core component, a front mold inserting pin is arranged in the front mold core component, a rear mold inserting pin is arranged in the rear mold entry sub-component, and the front mold inserting pin and the rear mold inserting pin can penetrate the injection molding component; wherein, The slide assembly includes a slide seat capable of moving left and right and a slide insert fixed on the slide seat, wherein the slide insert is used to extend between the rear mold insert assembly and the front mold core assembly after moving left and right and contact the front mold insert pin and the rear mold insert pin; The side portion of the row seat is provided with a first inclined surface and a first vertical surface located below the first inclined surface, the shovel base assembly includes a delay structure, the delay structure includes a second inclined surface and a second vertical surface located above the second inclined surface, the first inclined surface and the second inclined surface are inclined and have the same inclination angle; After the shovel base assembly and the slider assembly move toward each other, the second inclined surface can contact and press the first inclined surface, so that the delay structure can push the slider seat to move left and right, and the slider seat can drive the slider inserter to extend between the rear mold inserter assembly and the front mold core assembly after moving. When the second inclined surface is separated from the first inclined surface and the second vertical surface is in contact with the first vertical surface, the slider inserter contacts the front mold inserting pin and the rear mold inserting pin; The front mold device also includes an inclined guide column assembly, which includes an inclined guide column body, an inclined through hole is provided on the slide seat, and the inclined guide column body, the inclined through hole, the first inclined surface and the second inclined surface are inclined and have the same inclination angle; wherein, The inclined guide column body can penetrate into the inclined through hole and contact the inner wall of the inclined through hole; The shovel base assembly also includes a shovel base body, the delay structure is arranged at the bottom of the shovel base body, and a third inclined surface is opened on the side of the shovel base body. The third inclined surface is inclined and has the same inclination angle as the first inclined surface. When the row position insert contacts the front mold insert pin and the rear mold insert pin, the third inclined surface contacts the first inclined surface.

2. The multi-pin high-precision plastic mold according to claim 1, It is characterized in that The inner diameter of the inclined guide column body is smaller than the inner diameter of the inclined through hole, and a delay gap is formed between the inclined through hole and the inclined guide column body entering therein.

3. The multi-pin high-precision plastic mold according to claim 1, It is characterized in that The injection molding component comprises a hot nozzle penetrating the front mold core component, and the hot nozzle is connected to a mold cavity arranged between the rear mold insertion sub-component and the front mold core component.

4. The multi-pin high-precision plastic mold according to claim 3, It is characterized in that Hot runners are provided in the front mold insert pin and the rear mold insert pin, and the hot runners are connected to the mold cavity.

5. The multi-pin high-precision plastic mold according to claim 1, It is characterized in that A limiting groove is provided at the bottom of the shovel basic body, and the delay structure is fixed in the limiting groove.

6. The multi-pin high-precision plastic mold according to claim 5, It is characterized in that The delay structure further includes a delay block, a side portion of which forms the second inclined surface and the second vertical surface, and the delay block is fixed in the limiting groove.

7. The multi-pin high-precision plastic mold according to claim 6, It is characterized in that A limiting slide groove is provided on the side of the sliding seat, the upper half of the bottom surface of the limiting slide groove forms the first inclined surface and the lower half forms the first vertical surface, the delay block can extend into the limiting slide groove, and when the delay block extends into the limiting slide groove, the side wall of the delay block contacts the side wall of the limiting slide groove.

8. The multi-pin high-precision plastic mold according to claim 6 or 7, It is characterized in that There are a plurality of the limiting grooves, and a plurality of the delay blocks. The plurality of delay blocks are respectively fixed in the plurality of limiting grooves.

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