Die with inclined ejection mechanism

Abstract

The utility model discloses a mold with a pitched roof mechanism. The mold comprises a mold frame, a mold core, an ejection mechanism and the pitched roof mechanism, the mold core comprises a front mold core and a rear mold core, the front mold core and the rear mold core are respectively assembled in the mold frame, the ejection mechanism comprises an ejection plate group and an ejector pin, and the ejection plate group is assembled at the bottom of the mold frame; the inclined ejection mechanism comprises an inclined ejection head, an inclined ejection rod, a base, a sliding block and a base sliding rail; the base sliding rail is fixedly connected with the ejector plate set, the sliding block is connected with the base sliding rail in a sliding mode, and the base is connected with the sliding block in an inserted mode. One end of the angle ejector rod is fixedly connected with the angle ejector head, and the other end of the angle ejector rod is fixedly connected with the base, so that the problem that the ejector rod is bent or even broken due to insufficient displacement of the angle ejector caused by stress concentration of a stress part of the angle ejector rod can be effectively avoided; therefore, the service life of the angle ejector rod is prolonged, and the stability of the angle ejector rod in the ejection process is ensured.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a mold with an inclined top mechanism. Background Art

[0002] The Chinese patent authorization announcement number is: CN 210148646 U-type provides a mold tilting lift mechanism and an injection mold containing the mold tilting lift mechanism, the mold tilting lift mechanism includes a tilting lift, a guide slider arranged at the lower end of the tilting lift, and a tilting lift seat arranged at the lower end of the guide slider, the tilting lift includes a straight rod and a connecting block arranged at the lower end of the straight rod, the cross-section of the connecting block is in the shape of a semicircle, the connecting block cooperates with the guide slider, and the upper end of the guide slider is provided with a slide groove that cooperates with the connecting block; but in the actual production process, when the tilting lift is subjected to excessive force, although the straight rod will rotate around the guide slider through the connecting block, the rotation virtual position is limited, resulting in insufficient lateral displacement of the tilting lift, and it is impossible to effectively avoid the breakage of the straight rod and the smooth ejection of the product, and the support rod and the connecting block of this mechanism are an integrated mechanism, if the parts are damaged, they need to be disassembled as a whole, resulting in a waste of production cost and time.

[0003] Therefore, how to solve the technical problems existing in the above-mentioned prior art is one of the key research and development directions of technical personnel in this field. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the purpose of the utility model is to provide a mold with a tilting ejector mechanism.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A mold with an inclined ejector mechanism, comprising a mold frame, a mold core, an ejector mechanism and an inclined ejector mechanism; the mold core comprises a front mold core and a rear mold core, the front mold core and the rear mold core are respectively assembled in the mold frame, the front mold core and the rear mold core are in contact to form a first molding cavity; the front mold core comprises an upper inner film core, the rear mold core comprises a lower inner film core, the upper inner film core and the lower inner film core are in contact to form a second molding cavity; the ejector mechanism comprises an ejector plate group and an ejector pin, the ejector plate group is assembled at the bottom of the mold frame and fixed with the ejector pin The inclined ejector mechanism comprises an inclined ejector head, an inclined ejector rod, a base, a slider and a base slide rail; the base slide rail is fixedly connected to the ejector plate assembly, and the slider is slidably connected to the base slide rail; one end of the inclined ejector rod is fixedly connected to the inclined ejector head, and passes through the rear mold core along the mold opening direction toward the front mold core and extends into the second molding cavity, and the inclined ejector head contacts the product; the other end of the inclined ejector rod is fixedly connected to the base; there is a certain angle a between the disengagement surface of the inclined ejector head and the mold opening direction, and the angle a is ≥9.5 degrees.

[0007] Further preferably, the bottom slide rail is a slide groove with a "convex"-shaped cross section, and the opening direction of the slide groove with a "convex"-shaped cross section faces the ejection plate assembly.

[0008] Further preferably, the slider is a cuboid with a circular through hole; the base is symmetrically provided with two cylindrical protrusions on both sides along the mold opening direction, and the two cylindrical protrusions are respectively inserted into the circular through holes of the slider.

[0009] Further preferably, the inclined ejector mechanism further comprises a limiting device, wherein the limiting device is sleeved on the inclined ejector rod and fixedly connected to the inclined ejector rod.

[0010] Further preferably, the limiting device is a limiting ring.

[0011] Further preferably, the limiting ring comprises a first limiting ring and a second limiting ring, the first limiting ring extends into the rear mold core and is slidably connected to the rear mold core; the second limiting ring is fixedly arranged in the middle of the inclined ejector rod.

[0012] Further preferably, the diameter of the second limiting ring is larger than that of the first limiting ring.

[0013] Further preferably, the angle a is 10 degrees.

[0014] Further preferably: it also includes a straight ejection mechanism, which includes a straight ejection head and a straight ejection rod, one end of the straight ejection rod is fixedly connected to the ejection plate assembly, and the other end passes through the rear mold core along the mold opening direction toward the rear front mold core and extends into the first molding cavity, and contacts the product.

[0015] Further preferably, the number of the straight plugs is several, and the several straight plugs are staggeredly arranged on both sides of the product along the core pulling direction.

[0016] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0017] 1. The utility model sets an inner film core structure in the mold core, forming a special structure of "core in core" in the original mold core structure, so that it can be replaced according to the local differences of the product, extending from the original one-to-one injection mold to a pair of multiple models or the same model with different styles of processing needs, greatly solving the processing cost;

[0018] 2. The utility model also designs a straight ejection mechanism and an inclined ejection structure on the same ejection plate group, wherein the base in the inclined ejection mechanism is symmetrically provided with two cylindrical protrusions on both sides along the mold opening direction, and the two cylindrical protrusions are respectively inserted in the circular through holes of the slider, and the base rotates relative to the slider with the cylindrical protrusion as the axis, and the base rotates relative to the slider with the cylindrical protrusion as the axis, so as to realize the displacement of the slider along the base slide rail, and the base drives the inclined ejector rod to swing in different directions with the circular protrusion as the center of the circle; the utility model can effectively avoid the problem of insufficient displacement of the inclined ejector rod due to stress concentration at the force-bearing part of the inclined ejector rod, thereby causing the ejector rod to bend or even break, thereby extending the service life of the inclined ejector rod and ensuring the stability of the inclined ejector rod during the ejection process, and because the parts of the inclined ejection mechanism are assembled in a split manner, the inconvenience of disassembly and assembly and the waste of resources caused by damage to the overall parts are avoided, the mold repair cost is reduced and the injection molding production efficiency is improved;

[0019] 3. The demoulding surface of the inclined ejector head in the inclined ejector mechanism of the utility model is adjusted in angle, so as to ensure that the inclined ejector head can be demoulded according to the movement characteristics of the inclined ejector rod while avoiding being stuck with the mold core, ensuring smooth demoulding and ensuring mutual avoidance with the straight ejector mechanism, thereby realizing product processing and demoulding while greatly reducing the manufacturing cost of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of a mold with a tilting lift mechanism in an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A cross-sectional view of the structure shown in FIG. 1 along AA;

[0022] Figure 3 yes Figure 1 The structure shown in is a cross-sectional view along BB;

[0023] Figure 4 yes Figure 1 The structure shown in is a cross-section along CC;

[0024] Figure 5 yes Figure 1 The structure shown in is a cross-section along DD;

[0025] Figure 6 yes Figure 1 The structure shown in is a cross-section along EE;

[0026] Figure 7 It is a schematic diagram of a three-dimensional structure of a tilting top mechanism in an embodiment of the utility model;

[0027] Figure 8 yes Figure 7The structure shown in is a cross-sectional view along FF;

[0028] Fig. 9 It is a three-dimensional schematic diagram of the product structure in the embodiment of the utility model.

[0029] The symbols of the drawings in the above specification are explained as follows:

[0030] 110. Top plate;

[0031] 120, hot runner system; 121, runner plate; 122, runner; 123, junction box; 124, wire channel;

[0032] 130, front template;

[0033] 140, front mold core; 141, upper inner mold core;

[0034] 150. Glue injection nozzle;

[0035] 210, rear mold core; 211, lower inner mold core;

[0036] 310, square iron;

[0037] 320, bottom plate;

[0038] 330, ejector mechanism; 331, ejector plate assembly; 332, ejector pin;

[0039] 340, inclined ejector mechanism; 341, inclined ejector rod; 342, inclined ejector head; 343, inclined base; 344, inclined base slider; 345, inclined base slide rail; 346, first limiting ring; 347, second limiting ring;

[0040] 350, straight jacking mechanism; 351, straight jacking rod; 352, straight jacking head;

[0041] 400. Products. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0043] It should be noted that in the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] Example

[0045] like Figure 1-6 As shown, the utility model discloses a mold with an inclined ejection mechanism, including a front mold group, a rear mold group, a mold core, a straight ejection mechanism 350 and an inclined ejection mechanism 340.

[0046] like Figure 1-5 As shown, the front module includes a top plate 110, a hot runner system 120, and a front template 130; the top plate 110 is fixedly connected to the hot runner system 120, and the hot runner system 120 is fixedly connected to the front template 130; the front template 130 is in contact with the rear module; the front template 130 is provided with a front template 130 limiting groove, and the front template 130 limiting groove is a containing cavity, and the opening direction of the containing cavity is toward the rear module; specifically: the hot runner system 120 includes a glue injection nozzle 150, a wire channel 124, a flow channel 122, a flow channel plate 121 and a junction box 123; the flow channel plate 121 is symmetrically fixed on the surface of the front template facing away from the rear module along the core pulling axis direction, and the top plate 110 is fixed on the flow channel plate 121, so that there is a certain space between the top plate 110 and the front template; the junction box 123 is fixed on one side of the surface of the front template facing away from the rear module, and is fixedly connected to the wire channel 124; the wire channel 124 is fixedly connected to the flow channel 122, and the wire channel 124 and the flow channel 122 are evenly distributed in the space between the top plate 110 and the front template, and are fixedly connected to the front template 130; heating wires are evenly distributed in the flow channel 122; the glue injection nozzle 150 penetrates the top plate 110 and extends into the flow channel 122 along the mold opening direction toward the rear module, and the glue injection nozzle 150 is fixedly connected to the flow channel 122; the raw material enters the flow channel 122 from the glue injection nozzle 150, the junction box 123 is powered on, and the current is conducted to the heating wire in the flow channel 122 through the wire channel 124, and the heating wire begins to heat up, so that the raw material in the flow channel 122 melts, thereby obtaining better fluidity.

[0047] like Figure 2 As shown, the rear module includes a bottom plate 320, a square iron 310, a rear template (omitted in the figure) and an ejection mechanism 330; the square iron 310 is symmetrically fixed on the bottom plate 320, and the rear template (omitted in the figure) is fixed on the square iron 310, so that there is a certain space between the bottom plate 320 and the rear template (omitted in the figure).

[0048] like Figure 3-4As shown, the ejection mechanism 330 includes an ejection plate group 331 and an ejector pin 332. The ejector plate group 331 is assembled in the space formed by the base plate 320 and the rear template (omitted in the figure). One end of the ejector pin 332 is fixed on the ejector plate group 331, and the other end extends toward the front template. When the ejector plate group 331 is driven to move toward the rear template, the ejector pin 332 is driven to move along the mold opening direction.

[0049] like Figure 2-4 As shown, the mold core includes a front mold core 140 and a rear mold core 210;

[0050] like Figure 2 As shown, the front mold core 140 is fixed in the limiting groove of the front mold plate 130, and the open end of the front mold core 140 faces the rear mold group; the front mold core 140 symmetrically opens the front mold core 140 limiting groove along the mold opening direction, and the front mold core 140 limiting groove is a receiving cavity, and the opening direction of the receiving cavity faces the rear mold group; the front mold core 140 also includes an upper inner mold core 141, and the upper inner mold core 141 is fixed in the limiting groove of the front mold core 140, and the open end of the upper inner mold core 141 faces the rear mold group;

[0051] like Figure 2-6 As shown, the open end of the rear mold core 210 faces the front mold group, and the open end of the front mold core 140 contacts the open end of the rear mold core 210 to form a first molding cavity; the rear mold core 210 symmetrically opens a rear mold core 210 limiting groove along the mold opening direction, and the rear mold core 210 limiting groove is a accommodating cavity; the rear mold core 210 includes a lower inner mold core 211, a straight top head 352, and an inclined top head 342; the lower inner mold core 211 is fixed in the limiting groove of the rear mold core 210, and the open end of the lower inner mold core 211 faces the front mold group, and the open end of the lower inner mold core 211 contacts the open end of the upper inner mold core 141 to form a second molding cavity, and the first molding cavity is connected to the second molding cavity; the straight top heads 352 are staggered along both sides of the product 400 The straight ejector 352 is arranged and contacts the product 400; specifically: the number of the straight ejector 352 is several, and the several straight ejector 352 is staggered on both sides of the product 400 along the core pulling direction, and passes through the rear mold core 210 along the mold opening direction, extends toward the front mold group, and extends into the first molding cavity and contacts the product 400; the inclined ejector 342 passes through the rear mold core 210 and is slidably connected with the rear mold core 210; specifically: the inclined ejector 342 is arranged on one side of the lower inner mold core 211 and contacts one side of the lower inner mold core 211; the inclined ejector 342 passes through the rear mold core 210 at a certain inclined angle along the mold opening direction, extends toward the front mold group, and extends into the second molding cavity and contacts the product 400.

[0052] like Figure 4 As shown, the straight ejection mechanism 350 includes the straight ejector head 352 and the straight ejector rod 351; one end of the straight ejector rod 351 is fixedly connected to the ejection plate group 331, and the other end passes through the rear mold core 210 and extends toward the front mold group, and is fixedly connected to the straight ejector head 352; when the ejection plate group 331 is driven to move toward the front mold group, the ejection plate group 331 drives the straight ejector rod 351 to eject along the mold opening direction, and then drives the straight ejector head 352 to eject.

[0053] like Figure 2 As shown, the inclined ejector mechanism 340 includes an inclined ejector head 342, an inclined ejector rod 341, a base, a slider and a base slide rail; one end of the inclined ejector rod 341 is fixedly connected to the inclined ejector head 342, and the other end is fixedly connected to the base, the base is fixedly connected to the slider, and the slider is slidably connected to the base slide rail; specifically: the base slide rail passes through the bottom plate 320 along the mold opening direction and is fixedly connected to the ejection plate group 331; the base slide rail is a slide groove with a "convex" shape in cross section, and the opening direction of the slide groove with a "convex" shape in cross section is toward the ejection plate group 331, and a rectangular through hole is also provided at the bottom of the slide groove; the slider is slidably connected to the base slide rail, There are two sliders in the mold, and the two sliders are symmetrically arranged on both sides of the slide groove along the core pulling axis direction; the slider is a rectangular parallelepiped, and a circular through hole is opened in the rectangular parallelepiped along the vertical core pulling direction; the base extends into the base slide rail along the mold opening direction, and extends toward the bottom plate 320 through the rectangular through hole; the base is symmetrically provided with two cylindrical protrusions on both sides along the mold opening direction, and the two cylindrical protrusions are respectively inserted in the circular through holes of the slider, and the base takes the cylindrical protrusion as the axis and rotates relative to the slider, so as to realize the displacement of the slider along the base slide rail, and the base drives the inclined push rod 341 to swing in different directions with the circular protrusion as the center.

[0054] What needs to be explained in detail is: Figure 8As shown, one side of the inclined ejector head 342 is a molding surface, and the disengagement surface is arranged opposite to the molding surface. The disengagement surface forms a certain angle a with the mold opening direction. However, according to the technical requirements of the product 400 and the specific structure, multiple straight ejector mechanisms 350 are required to cooperate with the inclined ejector mechanism 340 to form the product 400 during ejection and demolding, which reduces the gap between the inclined ejector mechanism 340 and the straight ejector mechanism 350. How to balance the straight ejection and inclined ejection forming has also become a design focus. Therefore, the angle between the disengagement surface and the ejection direction of the straight ejector mechanism 350, that is, the angle between the disengagement surface and the mold opening direction is a≥9.5 degrees, and the preferred angle is 10 degrees. While satisfying the ejection process of the inclined ejector mechanism 340, it can also ensure that the inclined ejector head 342 can be separated from the mold core and avoid interference with the straight ejector mechanism 350.

[0055] like Figure 7-8 As shown, the inclined ejector mechanism 340 also includes a limiting device, which is mounted on the inclined ejector rod 341 and fixedly connected to the inclined ejector rod 341. Specifically: the limiting device is a limiting ring, and the limiting ring includes a first limiting ring 346 and a second limiting ring 347; the first limiting ring 346 extends into the rear mold core 210 and is slidably connected to the rear mold core 210, thereby ensuring the stability of the displacement direction of the inclined ejector rod 341 in the rear mold core 210; the second limiting ring 347 is fixedly arranged in the middle of the inclined ejector rod 341, and the diameter of the second limiting ring 347 is larger than that of the first limiting ring 346. A limit ring 346 is provided to ensure that the second limit ring 347 will not pass through the rear mold core 210, thereby ensuring the precise displacement distance of the inclined rod in the ejection direction; when the ejection plate group 331 is driven, the ejection plate group 331 drives the base slide rail, and the base slide rail drives the base and drives the inclined ejector rod 341 and the inclined ejector head 342 to perform ejection displacement in a direction with a certain inclination angle along the mold opening direction. When the second limit ring 347 is displaced to the side of the rear mold core 210 facing the bottom plate 320, the displacement of the second limit ring 347 is restricted, thereby completing the displacement of the inclined ejector rod 341.

[0056] like Figure 1-9 As shown, the demoulding steps of the product 400 of the mold with the inclined ejector mechanism are as follows:

[0057] Step 1: Open the mold:

[0058] When the mold needs to be opened after injection molding is completed, the front mold group and the front mold core 140 are driven to move in the direction away from the rear mold core 210 to perform mold displacement; the top plate 110 is driven to drive the runner plate 121, the front mold plate 130, the front mold core 140 and the upper inner film core to move away from the rear mold core 210 in the mold opening direction.

[0059] Step 2: Core pulling:

[0060] When the ejector plate group 331 is driven, the ejector plate group 331 drives the base slide rail, and the base slide rail drives the base and drives the inclined ejector rod 341 and the inclined ejector head 342 to perform ejection displacement in a direction with a certain inclination angle along the mold opening direction. At the same time, the inclined ejector head 342 moves away from the product 400 along the core pulling direction until it is completely separated from the product 400, thereby completing the core pulling.

[0061] Step 3: Ejection:

[0062] The ejector plate group 331 is driven, and the ejector plate group 331 moves along the mold opening direction toward the front mold core 140. The ejector plate group 331 drives the ejector pin 332, the straight ejector rod 351 and the straight ejector head 352 to eject and displace toward the front mold core 140. At the same time, the ejector plate group 331 drives the base slide rail, the base, the inclined ejector rod 341 and the inclined ejector head 342 to eject and displace in a direction with a certain inclination angle along the mold opening direction. When the second limiting ring 347 is displaced to the side of the rear mold core 210 facing the bottom plate 320, the displacement of the second limiting ring 347 is restricted, so that the displacement of the inclined ejector rod 341 ends, and then the product 400 is ejected toward the front mold core 140, so that the product 400 is separated from the rear mold core 210.

[0063] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A mold with a tilting mechanism, characterized in that: Including mold frame, mold core, ejection mechanism and inclined ejection mechanism; The mold core comprises a front mold core and a rear mold core, the front mold core and the rear mold core are respectively assembled in the mold frame, the front mold core and the rear mold core are in contact to form a first molding cavity; the front mold core comprises an upper inner film core, the rear mold core comprises a lower inner film core, the upper inner film core and the lower inner film core are in contact to form a second molding cavity; The ejection mechanism includes an ejection plate group and an ejector pin, wherein the ejection plate group is assembled at the bottom of the mold frame and is fixedly connected to the ejector pin; The inclined ejector mechanism comprises an inclined ejector head, an inclined ejector rod, a base, a slider and a base slide rail; the base slide rail is fixedly connected to the ejector plate assembly, and the slider is slidably connected to the base slide rail; one end of the inclined ejector rod is fixedly connected to the inclined ejector head, and passes through the rear mold core along the mold opening direction toward the front mold core and extends into the second molding cavity, and the inclined ejector head contacts the product; the other end of the inclined ejector rod is fixedly connected to the base; There is a certain angle a between the release surface of the inclined ejector and the mold opening direction, and the angle a is ≥9.5 degrees.

2. A mold with a tilting mechanism according to claim 1, characterized in that: The base slide rail is a slide groove with a "convex"-shaped cross section, and the opening direction of the slide groove with a "convex"-shaped cross section faces the ejection plate assembly.

3. A mold with a tilting mechanism according to claim 2, characterized in that: The slider is a rectangular parallelepiped with a circular through hole; the base is symmetrically provided with two cylindrical protrusions on both sides along the mold opening direction, and the two cylindrical protrusions are respectively inserted into the circular through holes of the slider.

4. The mold with a tilting mechanism according to claim 1, characterized in that: The inclined lift mechanism also includes a limiting device, which is sleeved on the inclined lift rod and fixedly connected to the inclined lift rod.

5. A mold with a tilting mechanism according to claim 4, characterized in that: The limiting device is a limiting ring.

6. A mold with a tilting mechanism according to claim 5, characterized in that: The limiting ring comprises a first limiting ring and a second limiting ring, wherein the first limiting ring extends into the rear mold core and is slidably connected to the rear mold core; and the second limiting ring is fixedly arranged in the middle of the inclined ejector rod.

7. A mold with a tilting mechanism according to claim 6, characterized in that: The diameter of the second limiting ring is greater than that of the first limiting ring.

8. The mold with a tilting mechanism according to claim 1, characterized in that: The angle a is 10 degrees.

9. The mold with a tilting mechanism according to claim 1, characterized in that: It also includes a straight ejection mechanism, which includes a straight ejection head and a straight ejection rod. One end of the straight ejection rod is fixedly connected to the ejection plate assembly, and the other end passes through the rear mold core along the mold opening direction toward the front mold core and extends into the first molding cavity to contact the product.

10. A mold with a tilting mechanism according to claim 9, characterized in that: The number of the straight plugs is several, and the several straight plugs are staggeredly arranged on both sides of the product along the core pulling direction.

Images