Fixing nut die

Abstract

The utility model discloses a fixing nut mold, and relates to the field of injection molds, the fixing nut mold comprises a base, a connecting seat, an ejection assembly, a rear mold shell, a rear mold core assembly, a front mold, a front mold falling assembly and a cooling component, in the injection molding process, irregular parts of the outer surface of a workpiece are subjected to injection molding through a sliding module, and after injection molding is completed, the front mold falling assembly falls off. When the rear mold is opened, the rear mold shell is driven to move under the action of a jacking spring and a movable rod, the rear mold inner core is separated from a connecting plate, and the sliding module is limited by a sliding groove in the outer surface of a fixed block, so that the sliding module is gradually opened in the moving process, a bulge on the outer surface of the sliding module is separated from a workpiece, and the irregular workpiece is conveniently demolded; and in the front mold separation process, a compression spring arranged in the front mold is reset, so that an abutting plate is driven to move, the abutting plate drives a demolding ring to be ejected out through a T-shaped connecting rod and a vertical rod, a formed workpiece is driven to be separated from the front mold, and the workpiece is prevented from being adhered to the outer surface of the front mold.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, especially a fixed nut mold. BACKGROUND

[0002] Fixed nuts, also known as embedded nuts or injection nuts, are metal nuts pre-embedded in plastic parts, used to provide a reliable threaded connection point to secure other components to the plastic part. Such nuts are usually formed together with the plastic part during the injection molding process to ensure that the nut is firmly combined with the plastic part, thereby improving the connection strength and durability.

[0003] The injection mold is tightly structured by the front mold and the rear mold, then the molten material is injected into the front mold, and the material flows to fill the inside of the mold through the flow channel arranged inside the front mold and the rear mold and the flowability of the material after melting, and then the cooling component arranged inside the mold is cooled to realize the injection molding of the workpiece.

[0004] The existing fixed nut has some irregular shell shapes. When such nuts are injection molded, the workpiece cannot be directly demolded by the ejection component after being cooled and formed in the mold due to the irregular shape of the outer surface, which requires workers to manually use other workpieces to take out, which is easy to cause damage to the workpiece and is relatively cumbersome to take out. UTILITY MODEL CONTENTS

[0005] (I) Technical problem solved

[0006] In view of the problems existing in the prior art, the utility model provides a fixed nut mold.

[0007] (II) Technical scheme

[0008] To achieve the above purpose, the utility model is implemented by the following technical scheme: a fixed nut mold, comprising a base, the outer surface of the base is fixedly connected with a connecting seat, the inside of the base is penetratingly provided with an ejection assembly, the side away from the base of the connecting seat is movably connected with a rear mold shell, the inside of the rear mold shell is provided with a rear mold kernel assembly, the side away from the connecting seat of the rear mold shell is movably connected with a front mold, the inside of the front mold is provided with a front mold falling assembly, and the inside of the rear mold shell is provided with a cooling component.

[0009] The rear mold kernel assembly comprises a connecting plate fixedly connected to the side away from the base of the connecting seat, a plurality of fixed blocks are fixedly connected to the side away from the base of the connecting plate, the outer surface of the fixed block is slidably connected with a sliding module, the side away from the base of the connecting plate is fixedly connected with an inner mold column, and the inside of the rear mold shell is fixedly connected with a rear mold inner core.

[0010] The front mold shedding assembly comprises two compression springs fixedly connected inside the front mold, an abutting plate fixedly connected at one end of the compression spring close to the rear mold shell, a movable rod inserted inside the abutting plate, the movable rod fixedly connected at the other end away from the rear mold shell with the inside of the front mold, a T-shaped connecting rod fixedly connected at the outer surface of the abutting plate, two shedding rings fixedly connected at the two sides of the other end of the T-shaped connecting rod away from the abutting plate, and a vertical rod fixedly connected between the two shedding rings.

[0011] As a preferred scheme of the fixed nut mold, the ejection assembly comprises an ejection plate fixedly connected inside the base, a plurality of ejector pins fixedly connected at one end of the ejection plate close to the rear mold shell, four ejection springs fixedly connected at one side of the ejection plate close to the rear mold shell, the other end of the ejection spring away from the ejection plate abutting against the outer surface of the rear mold shell through the connecting seat, four spring limiting shafts fixedly connected at the inner wall of the base, and the other end of the spring limiting shaft away from the base fixedly connected with the outer surface of the rear mold shell through the inside of the ejection spring and the connecting seat.

[0012] As a preferred scheme of the fixed nut mold, the connecting seat is fixedly connected with four main limiting shafts at one side close to the rear mold shell, and the other end of the main limiting shaft away from the base is movably connected with the inside of the front mold through the rear mold shell.

[0013] As a preferred scheme of the fixed nut mold, the outer surface of the fixed block is provided with a sliding groove, the outer surface of the sliding module is provided with a clamping block, the clamping block slides in the sliding groove, and the outer surface of the sliding module close to the inner mold column is provided with a protrusion for injection molding.

[0014] As a preferred scheme of the fixed nut mold, the inside of the rear mold inner core is provided with a cavity, and the inner wall of the cavity in the inside of the rear mold inner core can be tightly attached to the fixed block and the sliding module.

[0015] As a preferred scheme of the fixed nut mold, the connecting seat is fixedly connected with two ejection rods at one side close to the rear mold shell, the outer surfaces of the ejection rods and the movable rod are both provided with limiting blocks, and the inside of the rear mold shell and the front mold are both provided with circular grooves for the movement of the limiting blocks.

[0016] As a preferred scheme of the fixed nut mold, one side of the front mold close to the rear mold shell is provided with four circular grooves, the shedding rings are arranged in the circular grooves, and the one side of the front mold close to the rear mold shell is provided with a reserved groove.

[0017] As a preferred scheme of the fixed nut mold, the two movable rods and the two jacking rods are symmetrically arranged at the center.

[0018] (Three) beneficial effects

[0019] The utility model provides a fixed nut mold. Has the following beneficial effects:

[0020] 1, the irregular part of the workpiece outer surface is formed by the sliding module during injection molding, and after injection molding, the rear mold shell is moved under the action of the jacking spring and the movable rod, so that the rear mold core and the connecting plate are separated, the sliding module and the workpiece formed in the rear mold core are moved together, and the sliding module is limited by the limiting action of the sliding groove on the outer surface of the fixed block, so that the sliding module gradually opens during movement, so that the protrusions on the outer surface of the sliding module are separated from the workpiece, so that the irregular part of the workpiece outer surface is no longer limited, and the irregular workpiece is demolded conveniently.

[0021] 2, after injection molding, the compression spring arranged in the front mold is reset during the separation of the front mold, so as to drive the abutting plate to move, the demolding ring is driven out by the T-shaped connecting rod and the vertical rod, so as to drive the formed workpiece to separate from the front mold, and the workpiece is prevented from adhering to the outer surface of the front mold. DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0023] Figure 1 It is the overall structure schematic diagram of the utility model.

[0024] Figure 2 It is the overall explosion structure schematic diagram of the utility model.

[0025] Figure 3 It is the explosion structure schematic diagram of the rear mold core assembly of the utility model.

[0026] Figure 4 It is the explosion structure schematic diagram of the sliding module of the utility model.

[0027] Figure 5 It is the structure schematic diagram of the front mold of the utility model.

[0028] Figure 6 It is the structure schematic diagram of the front mold demolding assembly of the utility model.

[0029] In the figure, 1, base; 2, ejection assembly; 201, lifting plate; 202, lifting spring; 203, spring limiting shaft; 204, main limiting shaft; 205, ejector pin; 3, connecting seat; 4, rear mold shell; 5, front mold; 6, rear mold core assembly; 601, connecting plate; 602, fixed block; 603, mold column; 604, sliding module; 605, rear mold inner core; 7, front mold stripping assembly; 701, movable rod; 702, vertical rod; 703, lifting rod; 704, T-shaped connecting rod; 705, stripping ring; 706, abutting plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0031] Embodiment 1

[0032] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 , the first embodiment of the utility model provides a fixed nut mold, including base 1, the outer surface of base 1 is fixedly connected with connecting seat 3, the inside of base 1 is provided with ejection assembly 2, the side, away from base 1, of connecting seat 3 is movably connected with rear mold shell 4, the inside of rear mold shell 4 is provided with rear mold core assembly 6, the side, away from connecting seat 3, of rear mold shell 4 is movably connected with front mold 5, the inside of front mold 5 is provided with front mold stripping assembly 7, the inside of rear mold shell 4 is provided with cooling component, rear mold core assembly 6 includes connecting plate 601 fixedly connected with the side, away from base 1, of connecting seat 3, a plurality of fixed blocks 602 are fixedly connected with the side, away from base 1, of connecting plate 601, sliding module 604 is slidably connected with the outer surface of fixed block 602, inner mold column 603 is fixedly connected with the side, away from base 1, of connecting plate 601, rear mold inner core 605 is fixedly connected in the inside of rear mold shell 4.

[0033] Specifically, the ejection assembly 2 comprises a jacking plate 201 fixedly connected inside the base 1, a plurality of ejector pins 205 are fixedly connected to one end of the jacking plate 201 close to the rear mold shell 4, four jacking springs 202 are fixedly connected to one side of the jacking plate 201 close to the rear mold shell 4, one end of the jacking spring 202 away from the jacking plate 201 abuts against the outer surface of the rear mold shell 4 through the connecting seat 3, four spring limiting shafts 203 are fixedly connected to the inner wall of the base 1, one end of the spring limiting shaft 203 away from the base 1 is fixedly connected to the outer surface of the rear mold shell 4 through the inside of the jacking spring 202 and the connecting seat 3, four main limiting shafts 204 are fixedly connected to one side of the connecting seat 3 close to the rear mold shell 4, one end of the main limiting shaft 204 away from the base 1 is movably connected to the inside of the rear mold shell 4 and the front mold 5, the outer surface of the fixed block 602 is provided with a sliding groove, the outer surface of the sliding module 604 is provided with a clamping block, the clamping block slides in the sliding groove, the outer surface of the sliding module 604 close to the inner mold column 603 is provided with a protrusion for injection molding, the inside of the rear mold inner core 605 is provided with a cavity, the inner wall of the cavity in the inside of the rear mold inner core 605 can tightly fit with the fixed block 602 and the sliding module 604.

[0034] Further, during the injection molding process, the irregular part of the outer surface of the workpiece is injection molded by the sliding module 604, and the cavity in the inside of the workpiece is molded by the inner mold column 603, after the injection molding is completed, the front mold 5 is separated, and then the rear mold shell 4 is moved under the action of the jacking spring 202 and the movable rod 701, the rear mold shell 4 drives the rear mold inner core 605 to move, so that the sliding module 604 moves together with the workpiece molded in the inside of the rear mold inner core 605, and the sliding module 604 is limited by the sliding groove on the outer surface of the fixed block 602, so that the sliding module 604 gradually opens during the movement, so that the protrusion on the outer surface of the sliding module 604 is separated from the workpiece, so that the irregular part of the outer surface of the workpiece is no longer limited, the inside of the rear mold shell 4 is provided with a cooling component for cooling molding, the connection relationship between the cooling component and other components, the working principle and the working process belong to the prior art, which is well known to those skilled in the art, and will not be described in detail here.

[0035] Embodiment 2

[0036] Referring to Figure 1 , Figure 2 , Figure 5 and Figure 6For the second embodiment of the utility model, this embodiment is based on the previous embodiment, the front mold shedding assembly 7 comprises two compression springs fixedly connected inside the front mold 5, one end of the compression spring close to the rear mold shell 4 is fixedly connected with an abutment plate 706, the inside of the abutment plate 706 is provided with a movable rod 701, one end of the movable rod 701 away from the rear mold shell 4 is fixedly connected with the inside of the front mold 5, the outer surface of the abutment plate 706 is fixedly connected with a T-shaped connecting rod 704, the two sides of one end of the T-shaped connecting rod 704 away from the abutment plate 706 are fixedly connected with a demolding ring 705, and the demolding ring 705 is fixedly connected with a vertical rod 702.

[0037] Specifically, two jacking rods 703 are fixedly connected to one side of the connecting seat 3 close to the rear mold shell 4, the outer surfaces of the jacking rods 703 and the movable rods 701 are provided with limit blocks, the inside of the rear mold shell 4 and the front mold 5 is provided with a circular groove for the movement of the limit block, one side of the front mold 5 close to the rear mold shell 4 is provided with four circular grooves, the demolding ring 705 is arranged inside the circular grooves, one side of the front mold 5 close to the rear mold shell 4 is provided with a reserved groove, and the two movable rods 701 and the two jacking rods 703 are centrally symmetrically arranged.

[0038] Further, after the injection molding is completed, the compression spring arranged inside the front mold 5 resets during the process that the front mold 5 is separated, so as to drive the abutment plate 706 to move, the abutment plate 706 drives the demolding ring 705 to be ejected through the T-shaped connecting rod 704 and the vertical rod 702, so as to drive the formed workpiece to be separated from the front mold 5, thereby avoiding the workpiece from being adhered to the outer surface of the front mold 5, the abutment plate 706, the T-shaped connecting rod 704 and the vertical rod 702 are arranged in the reserved groove of the outer surface of the front mold 5 and tightly fit with the reserved groove, thereby not affecting the injection molding, the two movable rods 701 and the two jacking rods 703 are centrally symmetrically arranged, thereby avoiding the mold from being unbalanced.

[0039] Working principle: when the fixed nut injection production is carried out, the front mold 5 is matched with the rear mold, the matching process drives the rear mold shell 4 to move to one side of the base 1, so as to drive the lifting spring 202 to compress, make the lifting plate 201 drive the thimble 205 to move, so that the thimble 205 is received in the inside of the inner mold column 603, then injection is carried out through the injection port arranged on the outer surface of the front mold 5, the injected material is formed in the gap between the rear mold inner core 605 and the inner mold column 603 and the sliding module 604, and the irregular position of the outer surface of the part is formed through the protruding position on the outer surface of the sliding module 604, then the cooling assembly arranged in the rear mold shell 4 is cooled, so that the workpiece is formed, after forming, the front mold 5 moves reversely, so as to drive the front mold 5 to separate from the rear mold shell 4, after the front mold 5 separates, the compression spring arranged in the front mold 5 resets, so as to drive the abutment plate 706 to move, the abutment plate 706 drives the demolding ring 705 to be ejected through the T-shaped connecting rod 704 and the vertical rod 702, so as to drive the formed workpiece to separate from the front mold 5, avoid the workpiece from adhering to the outer surface of the front mold 5, the front mold 5 continues to move, so as to drive the movable rod 701 to move in the circular groove in the rear mold shell 4, in the process of moving of the rear mold shell 4, the rear mold shell 4 is driven to move under the action of the lifting spring 202 and the movable rod 701, the rear mold shell 4 drives the rear mold inner core 605 to move, so that the sliding module 604 moves together with the workpiece formed in the inside of the rear mold inner core 605, and the sliding module 604 is limited by the sliding groove on the outer surface of the fixed block 602, so that the sliding module 604 gradually opens in the process of moving, so that the protrusions on the outer surface of the sliding module 604 are separated from the workpiece, so that the irregular part on the outer surface of the workpiece is no longer limited, so that the workpiece can be ejected by the thimble 205, finally the injection of the fixed nut is completed, the irregular workpiece is conveniently stripped, and the workpiece is prevented from adhering to the front mold 5.

[0040] It should be noted that, in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations.

Claims

1. A fixed nut mould comprising a base (1), characterised in that: The outer surface of the base (1) is fixedly connected with a connecting seat (3), the inside of the base (1) is provided with an ejection assembly (2), the side, away from the base (1), of the connecting seat (3) is movably connected with a rear mold shell (4), the inside of the rear mold shell (4) is provided with a rear mold core assembly (6), the side, away from the connecting seat (3), of the rear mold shell (4) is movably connected with a front mold (5), the inside of the front mold (5) is provided with a front mold stripping assembly (7), and the inside of the rear mold shell (4) is provided with a cooling component; The rear mold core assembly (6) comprises a connecting plate (601) fixedly connected to the side, away from the base (1), of the connecting seat (3), a plurality of fixed blocks (602) fixedly connected to the side, away from the base (1), of the connecting plate (601), a sliding module (604) slidably connected to the outer surface of the fixed block (602), and an inner mold column (603) fixedly connected to the side, away from the base (1), of the connecting plate (601), and the inside of the rear mold shell (4) is fixedly connected with a rear mold inner core (605); The front mold stripping assembly (7) comprises two compression springs fixedly connected to the inside of the front mold (5), an abutting plate (706) fixedly connected to the end, close to the rear mold shell (4), of the compression spring, a movable rod (701) penetratingly arranged in the inside of the abutting plate (706), the end, away from the rear mold shell (4), of the movable rod (701) being fixedly connected to the inside of the front mold (5), a T-shaped connecting rod (704) fixedly connected to the outer surface of the abutting plate (706), and a stripping ring (705) fixedly connected between the two ends, away from the abutting plate (706), of the T-shaped connecting rod (704).

2. A captive nut mould as claimed in claim 1, wherein: The ejection assembly (2) comprises a jacking plate (201) fixedly connected to the inside of the base (1), a plurality of ejector pins (205) fixedly connected to the end, close to the rear mold shell (4), of the jacking plate (201), four jacking springs (202) fixedly connected to the side, close to the rear mold shell (4), of the jacking plate (201), the end, away from the jacking plate (201), of the jacking spring (202) penetrating through the inside of the connecting seat (3) and abutting against the outer surface of the rear mold shell (4), four spring limiting shafts (203) fixedly connected to the inner wall of the base (1), and the end, away from the base (1), of the spring limiting shaft (203) penetrating through the inside of the jacking spring (202) and the connecting seat (3) and being fixedly connected to the outer surface of the rear mold shell (4).

3. A captive nut mould as claimed in claim 2, wherein: The side, close to the rear mold shell (4), of the connecting seat (3) is fixedly connected with four main limiting shafts (204), and the end, away from the base (1), of the main limiting shaft (204) movably connects the inside of the rear mold shell (4) and the front mold (5).

4. A captive nut mould as claimed in claim 3, wherein: The outer surface of the fixed block (602) is provided with a sliding groove, the outer surface of the sliding module (604) is provided with a clamping block, the clamping block slides in the sliding groove, and the outer surface, close to the inner mold column (603), of the sliding module (604) is provided with a protrusion for injection molding.

5. A captive nut mould as claimed in claim 4, wherein: The inside of the rear mold inner core (605) is provided with a cavity, and the inner wall of the cavity is tightly fitted with the fixed block (602) and the sliding module (604).

6. A captive nut mould as claimed in claim 5, wherein: Two jacking rods (703) are fixedly connected to one side of the rear mold shell (4) close to the connecting seat (3), and the outer surfaces of the jacking rods (703) and the movable rods (701) are provided with limiting blocks; the interiors of the rear mold shell (4) and the front mold (5) are provided with circular grooves for the movement of the limiting blocks.

7. A captive nut mould as claimed in claim 6, wherein: Four circular grooves are arranged on one side of the front mold (5) close to the rear mold shell (4), and the demolding ring (705) is arranged in the circular grooves; and a reserved groove is arranged on one side of the front mold (5) close to the rear mold shell (4).

8. A captive nut mould as claimed in claim 7, wherein: The two movable rods (701) and the two jacking rods (703) are centrally symmetrically arranged.

Images