Injection mold with easy demolding

Abstract

The utility model provides a kind of injection mold convenient to demould, belong to injection mold technical field, including injection mechanism, including support frame, the lower mould of being fixed in support frame top, and the upper mould of being set in the top of lower mould;Demoulding mechanism, including the demoulding component for facilitating demoulding, and the protective component for preventing product from being pulled by the resilience of plastic part during demoulding, the demoulding component includes two symmetrical mounting bracket fixed in the bottom of support frame, rotates and is installed in the inside of mounting bracket and turns round the rod, cam piece is fixed on the surface of rotating rod, motor is fixed on the surface of mounting bracket and output end is connected with rotating rod fixedly, push plate is arranged in the inside of lower mould and is used for demoulding.The utility model is convenient to protective demoulding to the model in the inside of lower mould by the cooperation between demoulding component and protective component, solves the problem that traditional injection mold is not convenient to demould, and model surface may be scratched during demoulding, reaches the effect that it is convenient to demould and protects model.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, specifically relating to an injection mold that is easy to demold. Background Technology

[0002] Injection molds are key process equipment used for the mass production of plastic products. They melt plastic raw materials at high temperatures and inject them into a precisely designed cavity under high pressure. After cooling and solidification, the mold is ejected, ultimately yielding a product with a consistent structure. Molds typically consist of a moving mold, a fixed mold, a gating system, and an ejection mechanism. They are widely used in the automotive, electronics, medical, and consumer goods industries and are a core technology for achieving efficient and large-scale manufacturing.

[0003] Traditional injection molds require ejector pins to drive the ejector plate during demolding. However, a single ejector pin can hardly maintain uniform force on the ejector plate during demolding, resulting in uneven force distribution in the mold and easily leading to scratches and poor demolding performance. Utility Model Content

[0004] The purpose of this invention is to provide an injection mold that is easy to demold, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An injection mold for easy demolding, comprising,

[0007] The injection molding mechanism includes a support frame, a lower mold fixed to the top of the support frame, and an upper mold disposed on the top of the lower mold;

[0008] The demolding mechanism includes demolding components that facilitate demolding, and protective components that prevent product damage caused by the springback force of the plastic part during demolding.

[0009] As a preferred embodiment of this utility model, the demolding component includes two mounting brackets symmetrically fixed to the bottom of the support frame, a rotating rod rotatably mounted inside the mounting bracket, a cam component fixed to the surface of the rotating rod, a motor fixed to the surface of the mounting bracket and whose output end is fixedly connected to the rotating rod, a push plate disposed inside the lower mold for demolding, two connecting columns elastically mounted to the bottom of the support frame and fixedly connected to the push plate, and an arc-shaped block fixed to the bottom of the connecting columns and used in conjunction with the cam component.

[0010] In a preferred embodiment of this utility model, two return springs are fixedly installed at the bottom of the support frame, and the bottom end of the return springs is fixedly connected to the arc-shaped block.

[0011] In a preferred embodiment of this utility model, fixed wheels are fixedly installed on the surfaces of the two rotating rods, and a synchronous belt is connected between the two fixed wheels for transmission.

[0012] As a preferred embodiment of this utility model, the cam component includes a cam that is engaged with the surface of the rotating rod, a mounting groove formed on the surface of the cam, a mounting block disposed inside the mounting groove, a fixing bolt disposed on the mounting block, and a threaded groove formed on the surface of the rotating rod and used in conjunction with the fixing bolt to fix the mounting block.

[0013] In a preferred embodiment of this utility model, two baffles are fixedly installed on the surface of the rotating rod, and the cam is engaged between the two baffles.

[0014] As a preferred embodiment of the present invention, the protective component includes a ratchet fixed to the surface of the rotating rod, a convex plate fixed to the inside of the mounting bracket and located above the ratchet, and a pawl hinged to the bottom of the convex plate for braking the ratchet.

[0015] Compared with the prior art, the beneficial effects of this utility model are: through the cooperation between the demolding component and the protective component, it is convenient to perform protective demolding of the model inside the lower mold, which solves the problem that traditional injection molds are inconvenient to demold and may cause scratches on the surface of the model during demolding, thus achieving the effect of facilitating demolding and protecting the model. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the demolding component structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the cam component structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the protective component structure of this utility model.

[0021] In the diagram: 100, Injection molding mechanism; 110, Support frame; 120, Lower mold; 130, Upper mold; 200, Demolding mechanism; 210, Demolding component; 211, Mounting bracket; 212, Rotating rod; 213, Cam component; 2131, Cam; 2132, Mounting groove; 2133, Mounting block; 2134, Fixing bolt; 2135, Threaded groove; 2136, Baffle; 214, Motor; 215, Push plate; 216, Connecting column; 217, Arc block; 218, Return spring; 219, Fixed wheel; 2110, Synchronous belt; 220, Protective component; 221, Ratchet; 222, Protruding plate; 223, Pawl. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0025] Example

[0026] Reference Figure 1-4 This is an embodiment of the present invention, which provides an injection mold that facilitates demolding, comprising:

[0027] The injection molding mechanism 100 includes a support frame 110, a lower mold 120 fixed to the top of the support frame 110, and an upper mold 130 disposed on the top of the lower mold 120.

[0028] The demolding mechanism 200 includes a demolding component 210 for easy demolding and a protective component 220 to prevent product damage caused by the springback force of the plastic part during demolding.

[0029] The cooperation between the demolding component 210 and the protective component 220 facilitates the protective demolding of the model inside the lower mold 120, solving the problem that traditional injection molds are inconvenient to demold and may cause scratches on the surface of the model during demolding. This achieves the effect of facilitating demolding and protecting the model.

[0030] Specifically, the demolding component 210 includes two mounting brackets 211 symmetrically fixed to the bottom of the support frame 110, a rotating rod 212 rotatably mounted inside the mounting bracket 211, a cam component 213 fixed to the surface of the rotating rod 212, a motor 214 fixed to the surface of the mounting bracket 211 and whose output end is fixedly connected to the rotating rod 212, a push plate 215 disposed inside the lower mold 120 and used for demolding, two connecting columns 216 elastically mounted to the bottom of the support frame 110 and fixedly connected to the push plate 215, and an arc-shaped block 217 fixed to the bottom of the connecting column 216 and used in conjunction with the cam component 213.

[0031] Furthermore, two return springs 218 are fixedly installed at the bottom of the support frame 110, and the bottom end of the return springs 218 is fixedly connected to the arc block 217.

[0032] The reset spring 218 is used to pull the push plate 215 downward and reset it after demolding, so that the push plate 215 can be demolded again next time.

[0033] Preferably, fixed wheels 219 are fixedly mounted on the surfaces of the two rotating rods 212 respectively, and a synchronous belt 2110 is connected between the two fixed wheels 219 for transmission.

[0034] The fixed wheel 219 and the timing belt 2110 work together to drive the two cam pieces 213 to rotate synchronously, maintaining the synchronicity of the two cam pieces 213 pressing the arc block 217, which can prevent the push plate 215 from tilting during demolding, thereby improving the demolding effect.

[0035] Furthermore, the cam component 213 includes a cam 2131 that is snapped onto the surface of the rotating rod 212, a mounting groove 2132 formed on the surface of the cam 2131, a mounting block 2133 set inside the mounting groove 2132, a fixing bolt 2134 set on the mounting block 2133, and a threaded groove 2135 formed on the surface of the rotating rod 212 and used in conjunction with the fixing bolt 2134 to fix the mounting block 2133.

[0036] The mounting block 2133 is installed and fixed by the cooperation between the fixing bolt 2134 and the threaded groove 2135, which facilitates the replacement of the cam 2131. The demolding height can be controlled according to the different diameters of the cam 2131 to meet different demolding requirements.

[0037] Specifically, two baffles 2136 are fixedly installed on the surface of the rotating rod 212, and the cam 2131 is engaged between the two baffles 2136.

[0038] The baffle 2136 is used to position and install the cam 2131 to prevent the cam 2131 from shifting on the surface of the rotating rod 212, which would affect the alignment between the cam 2131 and the arc block 217.

[0039] Furthermore, the protective component 220 includes a ratchet 221 fixed to the surface of the rotating rod 212, a protrusion 222 fixed to the inside of the mounting bracket 211 and located above the ratchet 221, and a pawl 223 hinged to the bottom of the protrusion 222 and used to brake the ratchet 221.

[0040] When the motor 214 drives the rotating rod 212 to rotate, the rotating rod 212 drives the ratchet 221 to rotate. The surface of the ratchet 221 will continuously move the pawl 223. When the motor 214 is powered off or suddenly stops, the cam 2131 may cause the push plate 215 to shift in the opposite direction due to the spring force of the plastic part, causing product damage.

[0041] When using the mold, after injection molding, if demolding is required, the motor 214 needs to be started. The motor 214 drives the rotating rod 212 to rotate, and the rotating rod 212 drives the fixed wheel 219 on its surface to rotate. Under the transmission action of the synchronous belt 2110, the two fixed wheels 219 and the rotating rod 212 rotate synchronously. As a result, the rotating rod 212 drives the two cams 2131 to rotate synchronously. The surface of the cams 2131 will squeeze the arc block 217, causing the arc block 217 to drive the connecting column 216 to move upward. Then, the two connecting columns 216 drive the push plate 215 to move upward and push the model inside the lower mold 120 out to achieve the demolding effect. Since the two connecting columns 216 drive the push plate 215 to move synchronously, the push plate 215 is prevented from deviating when moving, which improves the protection effect of the model during demolding.

[0042] When the cam 2131 protrusion moves away from the surface of the arc block 217, the push plate 215 is pulled down to return to its original position under the elastic force of the return spring 218. When the rotating rod 212 rotates, it drives the ratchet 221 to rotate. Under the action of the pawl 223, the ratchet 221 is prevented from rotating in the opposite direction.

[0043] In summary, the cooperation between the demolding component 210 and the protective component 220 facilitates the protective demolding of the model inside the lower mold 120, solving the problem that traditional injection molds are inconvenient to demold and may cause scratches on the model surface during demolding. This achieves the effect of facilitating demolding and protecting the model.

[0044] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0045] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0046] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An injection mold that facilitates demolding, characterized in that: include, The injection molding mechanism (100) includes a support frame (110), a lower mold (120) fixed to the top of the support frame (110), and an upper mold (130) disposed on the top of the lower mold (120); The demolding mechanism (200) includes a demolding component (210) for easy demolding and a protective component (220) to prevent product damage caused by the springback force of the plastic part during demolding.

2. The injection mold for easy demolding according to claim 1, characterized in that: The demolding component (210) includes two mounting brackets (211) symmetrically fixed to the bottom of the support frame (110), a rotating rod (212) rotatably mounted on the inner side of the mounting bracket (211), a cam component (213) fixed to the surface of the rotating rod (212), a motor (214) fixed to the surface of the mounting bracket (211) and whose output end is fixedly connected to the rotating rod (212), a push plate (215) disposed inside the lower mold (120) for demolding, two connecting columns (216) elastically mounted to the bottom of the support frame (110) and fixedly connected to the push plate (215), and an arc-shaped block (217) fixed to the bottom of the connecting column (216) and used in conjunction with the cam component (213).

3. The injection mold for easy demolding according to claim 2, characterized in that: Two return springs (218) are fixedly installed at the bottom of the support frame (110), and the bottom end of the return springs (218) is fixedly connected to the arc block (217).

4. The injection mold for easy demolding according to claim 3, characterized in that: Fixed wheels (219) are fixedly installed on the surfaces of the two rotating rods (212), and a synchronous belt (2110) is connected between the two fixed wheels (219).

5. The injection mold for easy demolding according to claim 4, characterized in that: The cam component (213) includes a cam (2131) that is snapped onto the surface of the rotating rod (212), a mounting groove (2132) formed on the surface of the cam (2131), a mounting block (2133) set inside the mounting groove (2132), a fixing bolt (2134) set on the mounting block (2133), and a threaded groove (2135) formed on the surface of the rotating rod (212) and used in conjunction with the fixing bolt (2134) to fix the mounting block (2133).

6. The injection mold for easy demolding according to claim 5, characterized in that: Two baffles (2136) are fixedly installed on the surface of the rotating rod (212), and the cam (2131) is engaged between the two baffles (2136).

7. The injection mold for easy demolding according to claim 6, characterized in that: The protective component (220) includes a ratchet (221) fixed to the surface of the rotating rod (212), a protrusion (222) fixed to the inside of the mounting bracket (211) and located above the ratchet (221), and a pawl (223) hinged to the bottom of the protrusion (222) for braking the ratchet (221).

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