CN219543938U

CN219543938U - Automatic demoulding mechanism for injection mould

Info

Publication number: CN219543938U
Application number: CN202222868536.8U
Authority: CN
Inventors: 李孟杰; 邱爱芹
Original assignee: Qingdao Qisheng Molding Co ltd
Current assignee: Qingdao Qisheng Molding Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-08-18
Anticipated expiration: 2032-10-31

Abstract

The utility model relates to the technical field of automatic demolding, and discloses an automatic demolding mechanism for an injection mold, which comprises a lower mold, wherein a back plate is fixed on the back surface of the lower mold, a hydraulic machine is fixed on the top of the front surface of the back plate, an upper mold is fixed on an output shaft of the hydraulic machine, and a threaded rod is fixed on an output shaft of the upper mold; according to the utility model, when the threaded rod is taken out of the nut through the rebound mechanism, the rebound mechanism can assist the threaded rod to push out the injection molded nut, so that the nut can be demolded more easily, the thread of the nut cannot be damaged in the demolding process, meanwhile, when the nut is separated from the threaded rod, the baffle plate can limit the nut, so that the nut cannot rotate in the demolding process, the demolding efficiency is improved, the thread cannot be damaged, and the problems that the thread is damaged easily and the demolding efficiency is low in demolding process at present are solved.

Description

Automatic demoulding mechanism for injection mould

Technical Field

The utility model relates to the technical field of automatic demolding, in particular to an automatic demolding mechanism for an injection mold.

Background

The injection mold is a tool for producing plastic products, and also a tool for endowing the plastic products with complete structures and precise dimensions, and the injection molding is a processing method used for mass production of parts with complex shapes, specifically, the injection mold is used for injecting heated and melted plastic into a mold cavity at high pressure by an injection molding machine, and cooling and solidifying are carried out to obtain the formed products.

The nut made of some plastic materials can be used in daily life, the object is conveniently reinforced, the plastic nut is produced by using the injection mold, the threaded rod of the upper mold is usually directly used for pulling out the nut after injection molding when the nut after injection molding is demolded at present, the taking-out mode is simple and trouble-saving, when the nut is pulled, the nut and the lower mold are difficult to separate because the connecting area of the lower mold and the nut is large, the nut and the lower mold are difficult to separate, the nut is hard to be pulled out, the threads in the nut are damaged, the qualification rate of the nut is influenced, meanwhile, when the threaded rod is taken out from the nut, the nut is pulled to be attached to the upper mold, then the threaded rod is rotationally moved to separate the threaded rod from the nut, but the nut is not limited in the separation process, the nut and the upper mold are slid, the demolding of the nut is influenced, the demolding efficiency is reduced, and the threads in the nut are damaged when the nut is demolded.

Disclosure of Invention

The utility model aims to provide an automatic demolding mechanism for an injection mold, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an automatic demoulding mechanism for injection mold, includes the bed die, the back of bed die is fixed with the backplate, the positive top of backplate is fixed with the hydraulic press, the output shaft of hydraulic press is fixed with the mould, the output shaft of going up the mould is fixed with the threaded rod, the bottom of bed die inner chamber is fixed with rebound mechanism, rebound mechanism's top is fixed with the fly leaf, the surface and the inner wall sliding connection of bed die of fly leaf, the left and right sides of fly leaf all is fixed with the depression bar, the sliding tray has all been seted up to the left and right sides of bed die inner chamber, the depression bar is used with the sliding tray cooperation, two places all are fixed with the baffle around going up the mould bottom, the fixed slot has all been seted up to two places around the bed die top.

Preferably, the rebound mechanism comprises a fixed shell, a compression spring is fixed in an inner cavity of the fixed shell, a fixed rod is fixed at the other end of the compression spring, and the inner cavity of the fixed shell is in sliding connection with the surface of the fixed rod.

Preferably, the top of depression bar is fixed with the roof, two limit grooves have all been seted up to the left and right sides of last mould bottom, limit groove and roof cooperation use.

Preferably, the number of the rebound mechanisms is six, and the rebound mechanisms are uniformly distributed at the bottom of the inner cavity of the lower die.

Preferably, the shape of the baffle is V-shaped, and the baffle is matched with the fixing groove for use.

Preferably, the length of the threaded rod is the same as the depth of the movable plate in the inner cavity of the lower die after compression, and the protruding part is the same as the compression distance of the compression spring.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, when the threaded rod is taken out of the nut through the rebound mechanism, the rebound mechanism can assist the threaded rod to push out the injection molded nut, so that the nut can be demolded more easily, the thread of the nut cannot be damaged in the demolding process, meanwhile, when the nut is separated from the threaded rod, the baffle plate can limit the nut, so that the nut cannot rotate in the demolding process, the demolding efficiency is improved, the thread cannot be damaged, and the problems that the thread is damaged easily and the demolding efficiency is low in demolding process at present are solved.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of a three-dimensional cross-sectional structure in the present utility model;

FIG. 3 is a schematic view of a partially expanded perspective cross-section structure of the present utility model;

fig. 4 is a schematic view of a partial perspective cross-sectional structure in the present utility model.

In the figure: 1. a lower die; 2. a back plate; 3. a hydraulic press; 4. an upper die; 5. a threaded rod; 6. a baffle; 7. a rebound mechanism; 71. a fixed case; 72. a compression spring; 73. a fixed rod; 8. a movable plate; 9. a compression bar; 10. a top plate; 11. a limit groove; 12. a fixing groove; 13. a sliding groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, an automatic demolding mechanism for an injection mold comprises a lower mold 1, a back plate 2 is fixed on the back surface of the lower mold 1, a hydraulic press 3 is fixed on the front top of the back plate 2, an upper mold 4 is fixed on an output shaft of the hydraulic press 3, a threaded rod 5 is fixed on the output shaft of the upper mold 4, a rebound mechanism 7 is fixed on the bottom of an inner cavity of the lower mold 1, a movable plate 8 is fixed on the top of the rebound mechanism 7, the surface of the movable plate 8 is slidably connected with the inner wall of the lower mold 1, compression rods 9 are fixed on the left side and the right side of the movable plate 8, sliding grooves 13 are formed on the left side and the right side of the inner cavity of the lower mold 1, the compression rods 9 are matched with the sliding grooves 13, baffle plates 6 are fixed on the front and the back of the bottom of the upper mold 4, fixing grooves 12 are formed on the front and the back of the top of the lower mold 1, the threaded rod 5 is pushed out by the rebound mechanism 7 when the nut is taken out, the rebound mechanism 7 can assist the threaded rod 5 to push out the injection molding threaded rod 5, the nut is easy to demolding nut, the nut is not damaged easily, threads of the nut cannot be damaged in the demolding process, the demolding process cannot be simultaneously, the nut cannot be damaged by the threads, the nut cannot be limited to be rotated when the nut is broken, the demolding efficiency is not damaged, the nut cannot be damaged when the nut is rotated, and the nut cannot be damaged at the limit efficiency is simultaneously, at the time, the efficiency is damaged.

The rebound mechanism 7 comprises a fixed shell 71, a compression spring 72 is fixed in an inner cavity of the fixed shell 71, a fixed rod 73 is fixed at the other end of the compression spring 72, and the inner cavity of the fixed shell 71 is slidably connected with the surface of the fixed rod 73.

The roof 10 is fixed with at the top of depression bar 9, and spacing groove 11 has all been seted up to two places about the upper mould 4 bottom, and spacing groove 11 and roof 10 cooperation use, in this embodiment, through the setting of roof 10 and spacing groove 11, can carry out spacingly to roof 10 through spacing groove 11, makes it can not appear the skew in the extrusion process, increases the stability of depression bar 9 when removing.

The number of the rebound mechanisms 7 is six, and the rebound mechanisms are uniformly distributed at the bottom of the inner cavity of the lower die 1, in this embodiment, by means of the arrangement, the stability of the movable plate 8 during movement can be increased, so that the movable plate can be more stable during pushing of the nut.

The shape of baffle 6 is V-arrangement, and baffle 6 and fixed slot 12 cooperation are used, in this embodiment, through this kind of setting, can block it when the nut is rotatory, make it can not follow threaded rod 5 to rotate together, increase drawing of patterns efficiency.

The length of the threaded rod 5 is the same as the depth of the movable plate 8 in the inner cavity of the lower die 1 after compression, and the compression distance of the protruding part and the compression spring 72 is the same.

Working principle: firstly, pouring enough liquid raw materials into the inner cavity of a lower die 1, then starting a hydraulic press 3, immediately driving an upper die 4 to move by an output shaft of the hydraulic press 3, simultaneously driving a threaded rod 5 and a baffle 6 to move by the upper die 4, then enabling the upper die 4 to contact a top plate 10, immediately clamping the top plate 10 in a limit groove 11, then driving a pressing rod 9 to move by the top plate 10, simultaneously driving a movable plate 8 to move by the pressing rod 9, enabling the movable plate 8 to drive a fixed rod 73 to squeeze a compression spring 72, starting to cool the raw materials when the bottom of the upper die 4 contacts the top of the lower die 1, after cooling is finished, starting the hydraulic press 3 to move the upper die 4, under the action of the compression spring 72, ejecting the movable plate 8, enabling the inner wall of the lower die 1 to be separated from the surface of a nut, then continuing to move the upper die 4, enabling the nut to be separated from the movable plate 8, enabling the upper die 4 to drive the nut to rotate after returning to the original place, then blocking the threaded rod 6 to stop the nut, enabling the threaded rod 5 to gradually move upwards, enabling the threaded rod 5 to be separated from the connection of the nut, and immediately taking away the injection-molded nut.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automatic demoulding mechanism for injection mold, includes bed die, its characterized in that: the back of bed die is fixed with the backplate, the positive top of backplate is fixed with the hydraulic press, the output shaft of hydraulic press is fixed with the mould, the output shaft of going up the mould is fixed with the threaded rod, the bottom of bed die inner chamber is fixed with the resilience mechanism, the top of resilience mechanism is fixed with the fly leaf, the surface and the inner wall sliding connection of bed die of fly leaf, the left and right sides of fly leaf all is fixed with the depression bar, the sliding tray has all been seted up to the left and right sides of bed die inner chamber, the depression bar is used with the sliding tray cooperation, two places all are fixed with the baffle around going up the mould bottom, the fixed slot has all been seted up to two places around the bed die top.

2. The automatic mold release mechanism for an injection mold according to claim 1, wherein: the rebound mechanism comprises a fixed shell, a compression spring is fixed in an inner cavity of the fixed shell, a fixed rod is fixed at the other end of the compression spring, and the inner cavity of the fixed shell is in sliding connection with the surface of the fixed rod.

3. The automatic mold release mechanism for an injection mold according to claim 1, wherein: the top of depression bar is fixed with the roof, two limit grooves have all been seted up to the left and right sides of last mould bottom, limit groove and roof cooperation use.

4. The automatic mold release mechanism for an injection mold according to claim 1, wherein: the number of the rebound mechanisms is six, and the rebound mechanisms are uniformly distributed at the bottom of the inner cavity of the lower die.

5. The automatic mold release mechanism for an injection mold according to claim 1, wherein: the shape of the baffle is V-shaped, and the baffle is matched with the fixed groove for use.

6. The automatic mold release mechanism for an injection mold according to claim 2, wherein: the length of the threaded rod is the same as the depth of the movable plate in the inner cavity of the lower die after compression, and the protruding part is the same as the compression distance of the compression spring.