Die pitched roof and die

Abstract

The utility model discloses a mold pitched roof and a mold. The mold pitched roof comprises an ejector plate, a pitched roof seat and a pitched roof rod, wherein a pitched roof rod connecting end is movably connected with the pitched roof seat; a heat conduction piece is arranged in the angle ejector rod, the heat conduction coefficient of the heat conduction piece is larger than that of the angle ejector rod, and the heat conduction piece is not exposed out of the surface of the angle ejector rod. According to the mold pitched roof disclosed by the utility model, the heat conduction piece is arranged in the pitched roof rod, and the heat conduction performance of the heat conduction piece is superior to that of the pitched roof rod, so that the heat conduction efficiency of the whole pitched roof rod is improved, high temperature at the pitched roof rod can be quickly dissipated to the atmosphere when a mold is opened and ejected, and the temperature of the pitched roof rod is reduced; therefore, the possibility that the angle ejector rod is stabbed and even stuck due to the temperature rise expansion of the angle ejector rod is reduced, the production efficiency of a mold is improved, and the service life of the angle ejector is prolonged; the heat conduction piece is not exposed out of the surface of the angle ejector rod, and normal use of the angle ejector rod is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and in particular relates to an improved inclined top structure for a mold and a mold using the inclined top. Background Art

[0002] With the continuous development of industry and the continuous introduction of new products, their structures are becoming more and more complex. Plastic products basically have more or less internal undercut structures, and such internal undercuts are generally ejected using a sloping ejector. Therefore, the requirements for mold sloping ejectors are becoming increasingly higher.

[0003] The lifter typically consists of a lift rod and a lift seat. The lift rod's T-shaped protrusion slides into a T-slot on the lift seat. The lift seat is mounted on an ejector plate, which is located below the mold core plate. The lift rod slides and guides into an inclined hole in the mold core plate.

[0004] The ejector pin will create a certain amount of friction with the mold core plate itself. Furthermore, when the mold is operating, it will be connected to the mold temperature controller or the temperature will rise during continuous production. At this time, the mold will expand to a certain extent. Accordingly, the ejector pin, which is difficult to design a water channel for cooling, will grow higher and higher as the production temperature rises. At this time, the ejector pin will expand. The expansion of the mold will also reduce the movable space of the ejector pin, resulting in limited movement clearance of the ejector pin within the inclined hole. This is more likely to cause the mold ejector pin to burr, that is, there will be abnormal noise or inaction during ejection, deep scratches on the ejector pin and the guide hole of the mold fixing plate, or iron foam will be generated. This will prevent the smooth operation of injection molding, affect production efficiency, and shorten the service life of the ejector pin. In addition, the temperature difference between the ejector pin and other parts of the mold is greater, which will cause the plastic product to show ejection marks, resulting in appearance quality problems and even waste.

[0005] In the prior art, in order to solve the above-mentioned problems, the mold is usually produced through research and matching to achieve a relatively balanced gap production without damaging the inclined ejector rod. However, after a long period of use, the above-mentioned problems will reappear, and repeated research and matching is required, which is time-consuming and labor-intensive. Moreover, when the inclined ejector rod is replaced in the mold, re-research and matching may also be required.

[0006] Therefore, it is urgent to improve the existing mold lifter to reduce the possibility of burring of the lifter due to temperature increase and expansion of the lifter, which affects production efficiency and service life of the lifter.

[0007] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Summary of the Invention

[0008] The utility model provides a mold inclined ejector and a mold, which can reduce the problem of burring of the inclined ejector rod due to temperature increase and expansion of the inclined ejector rod, thereby improving production efficiency and service life of the inclined ejector.

[0009] In order to achieve the purpose of solving the above technical problems, the mold inclined top proposed by the present invention adopts the following technical solutions to achieve the purpose: a mold inclined top, comprising:

[0010] Ejector plate;

[0011] An inclined ejector seat, the inclined ejector seat being mounted on the ejection plate;

[0012] The inclined ejector rod has one end as an ejection end and the other end as a connecting end. The ejection end is used to eject the product, and the connecting end is movably connected to the inclined ejector seat. A heat conductor is provided inside the inclined ejector rod. The thermal conductivity of the heat conductor is greater than that of the inclined ejector rod, and the heat conductor is not exposed outside the surface of the inclined ejector rod.

[0013] In some embodiments of the present application, the heat conducting member is provided on the ejection end of the inclined ejector rod.

[0014] In some embodiments of the present application, a mounting hole is formed on the inclined ejector rod, and at least one end of the mounting hole passes through the inclined ejector rod. The outer contour of the heat conductor is adapted to the mounting hole and has an interference fit with the mounting hole.

[0015] In some embodiments of the present application, heat dissipation holes are formed on the heat conducting member.

[0016] In some embodiments of the present application, both ends of the mounting hole pass through the inclined ejector rod, the heat dissipation hole passes through the heat conducting member, and the heat dissipation hole is connected to an external air cooling device through a pipeline.

[0017] In some embodiments of the present application, a first exhaust channel is formed on the inclined ejector rod along its extension direction, a second exhaust channel is formed on the inclined ejector seat, and a third exhaust channel is formed on the ejector plate;

[0018] One end of the first exhaust channel is connected to the area where the heat conductor is located, the other end of the first exhaust channel is connected to one end of the second exhaust channel, the other end of the second exhaust channel is connected to one end of the third exhaust channel, and the other end of the third exhaust channel is used to connect to an external negative pressure mechanism.

[0019] In some embodiments of the present application, a fourth exhaust channel is formed at the ejection end of the inclined ejector rod, one end of the fourth exhaust channel is connected to the area where the heat conductor is located, and the other end passes through the ejection end of the inclined ejector rod.

[0020] In some embodiments of the present application, the thermal conductive element is made of beryllium copper, silver or aluminum alloy.

[0021] In some embodiments of the present application, a rolling element is connected to the connecting end of the inclined ejector rod, a sliding groove is formed on the inclined ejector seat, and the rolling element is rollingly connected in the sliding groove.

[0022] The utility model also provides a mold, comprising the above-mentioned mold inclined top.

[0023] Compared with the prior art, the present invention has the following advantages and positive effects:

[0024] 1. In the mold ejector of the utility model, a heat-conducting member is provided inside the ejector rod. The thermal conductivity of the heat-conducting member is greater than that of the ejector rod, that is, the thermal conductivity of the heat-conducting member is better than that of the ejector rod, thereby improving the heat conduction efficiency of the entire ejector rod. When the mold is opened and ejected, the high temperature at the ejector rod can be quickly dissipated to the atmosphere, thereby reducing the temperature of the ejector rod. This reduces the possibility of the ejector rod burring or even getting stuck due to the temperature increase and expansion of the ejector rod, thereby improving the production efficiency of the mold and the service life of the ejector rod.

[0025] 2. The heat conducting member does not protrude from the surface of the lift rod, for example, it is flush with the surface of the lift rod or completely embedded in the lift rod, which does not affect the normal use of the lift rod.

[0026] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a three-dimensional diagram of an embodiment of the mold proposed by the utility model;

[0029] Figure 2 This is a three-dimensional diagram of an embodiment of the mold inclined top proposed by the utility model;

[0030] Figure 3 This is a three-dimensional diagram of an embodiment of a mold tilting ejector proposed by the present invention, taking the arrangement of a tilting ejector rod and a tilting ejector seat on the ejector plate as an example;

[0031] Figure 4 yes Figure 3 A partial side view of

[0032] Figure 5This is a schematic diagram of the matching structure of the lift rod and the lift seat in one embodiment of the mold lift proposed by the utility model;

[0033] Figure 6 This is a three-dimensional diagram of a lift rod in one embodiment of the mold lift proposed by the present invention;

[0034] Figure 7 yes Figure 6 A magnified view of part A;

[0035] Figure 8 yes Figure 7 Exploded view of

[0036] Figure 9 It is a three-dimensional diagram of a lift rod in another embodiment of the mold lift proposed by the present invention.

[0037] In the figure, 100, front template; 200, rear template; 300, fixed base plate; 400, mold inclined top; 410, ejection plate; 411, third exhaust channel; 420, inclined top seat; 421, second exhaust channel; 422, slide groove; 430, inclined top rod; 431, ejection end; 432, connecting end; 433, connecting shaft; 434, rolling element; 435, mounting hole; 436, first exhaust channel; 440, heat conducting element; 441, heat dissipation hole. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, 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, 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. Therefore, they should not be understood as limiting the present invention.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections. A person of ordinary skill in the art will understand the specific meanings of the above terms in the present invention in specific circumstances. In the description of the embodiments, specific features, structures, materials, or characteristics may be combined in any appropriate manner in any one or more embodiments or examples.

[0041] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0042] In the description of the present invention, unless otherwise specified, “a plurality of” means two or more.

[0043] Reference Figures 1 to 8 In some embodiments of the present application, a mold is proposed, specifically an injection mold, including a front mold and a back mold.

[0044] The front mold includes the front mold plate 100 and of course other structural components required for the front mold of the injection mold, which will not be described in detail here.

[0045] The rear mold includes a rear plate 200, a fixed base plate 300, and a mold lifter 400 for ejecting the product after mold opening. The rear plate 200 and the front plate 100 define a product cavity. The rear plate 200 includes an inclined hole for engaging with a lifter pin 430 of the mold lifter 400 and allowing the ejection end 431 of the lifter pin 430 to extend into the product cavity, thereby contributing to the undercut molding and ejection of the product after mold closing. Of course, the rear mold also includes other structural components required for the injection mold rear mold, which will not be detailed here.

[0046] In some embodiments of the present application, the front template 100 includes a mold cavity plate, and the rear template 200 includes a mold core plate. Specifically, the mold cavity plate and the mold core plate form the above-mentioned product cavity, and the inclined hole is provided on the mold core plate.

[0047] In some embodiments of the present application, Figure 2 and Figure 3 As shown, the mold lifter 400 includes an ejector plate 410 .

[0048] The mold lifter 400 includes a lifter seat 420 , which is mounted on the ejection plate 410 .

[0049] The mold inclined ejector 400 includes an inclined ejector rod 430, one end of the inclined ejector rod 430 is an ejection end 431, and the other end is a connecting end 432. The inclined ejector rod 430 is passed through the inclined hole on the rear template 200, and its ejection end 431 and connecting end 432 are respectively located on both sides of the rear template 200. The ejection end 431 is used to eject the product, and the connecting end 432 is movably connected to the inclined ejector seat 420.

[0050] Regarding the movable connection between the inclined ejector rod 430 and the inclined ejector seat 420, as shown in FIG. Figure 5 As shown, the connecting end 432 of the lift rod 430 is provided with a connecting shaft 433, and the connecting shaft 433 is connected to a rolling member 434. A chute 422, such as a T-shaped chute, is formed on the lift seat 420, and the rolling member 434 is rollingly connected in the chute 422. By rolling the lift rod 430 in the lift seat 420, when the mold is opened and closed, the connecting end 432 of the lift rod 430 can roll back and forth on the lift seat 420 in the direction of the lift rod ejection, ensuring smooth movement of the lift rod 430, thereby reducing the phenomenon of the lift rod 430 getting stuck in the mold, which is beneficial to improving the production efficiency of the mold.

[0051] The rolling element 434 may be a roller or a rolling bearing, etc., and is not specifically limited here.

[0052] In some embodiments of the present application, the ejection power of the mold inclined ejector 400 can come from the injection molding machine. The injection molding machine can set an injection molding machine connecting block on the mold. One end of the injection molding machine connecting block is connected to the ejection plate 410, and the other end is used to connect the injection molding machine ejector rod. The injection molding machine ejector rod pushes the entire mold inclined ejector 400 as a whole through the injection molding machine connecting block to realize the ejection action, that is, the ejection action is controlled by the injection molding machine.

[0053] Due to the small size of the inclined ejector pin 430, it is impossible to set a cooling water channel on it. The cooling water channel is only set on the mold template. When the mold is working, the mold will be connected to the mold temperature controller or the temperature will rise during continuous production. At this time, the mold will expand to a certain extent. Accordingly, the inclined ejector pin 430, which is difficult to design a water channel for cooling, will become higher and higher as the production temperature rises. At this time, the inclined ejector pin 430 will expand, and the expansion of the mold will also reduce the movement space of the inclined ejector pin 430, resulting in limited movement clearance of the inclined ejector pin in the inclined hole, which will make it more likely to cause the mold inclined ejector pin 400 to burr.

[0054] To solve this problem, in some embodiments of the present application, Figures 6 to 9 As shown, a heat conducting member 440 is provided inside the inclined ejector rod 430 , the heat conducting member 440 has a thermal conductivity greater than that of the inclined ejector rod 430 , and the heat conducting member 440 is not exposed outside the surface of the inclined ejector rod 430 .

[0055] By arranging a heat conductor 440 in the inclined ejector pin 430, and configuring the heat conductor 440 so that its thermal conductivity is greater than that of the inclined ejector pin 430, that is, the thermal conductivity of the heat conductor 440 is better than that of the inclined ejector pin 430, the heat conduction efficiency of the entire inclined ejector pin 430 is improved, and the high temperature at the inclined ejector pin 430 can be quickly dissipated into the atmosphere when the mold is opened and ejected, thereby reducing the temperature of the inclined ejector pin 430, thereby reducing the possibility of friction and burring, or even jamming, when the inclined ejector pin 430 slides with the inclined hole due to the expansion of the inclined ejector pin 430 due to heating, which is beneficial to improving the mold production efficiency and the service life of the inclined ejector pin.

[0056] At the same time, the heat conducting member 440 does not protrude from the surface of the inclined ejector rod 430 , for example, it is flush with the surface of the inclined ejector rod 430 or completely embedded in the interior of the inclined ejector rod 430 , and does not affect the normal use of the inclined ejector rod 430 .

[0057] In addition, the temperature of the inclined ejector pin 430 is reduced, which can also reduce the temperature difference between the inclined ejector and other parts of the mold, which is beneficial to leaving no ejection marks on the product and improving the appearance quality.

[0058] Since the inclined ejector rod 430 is usually made of iron, the material of the heat conducting member 440 can be selected from beryllium copper, silver or aluminum alloy, etc., without any specific limitation. The heat conducting member 440 can be in the form of a round rod or a block.

[0059] Since the ejection end 431 of the inclined ejector 430 is closest to the product cavity, the temperature at the ejection end 431 is higher than that of other parts, and the ejection end 431 is the part that contacts the product for ejection, in some embodiments of the present application, the heat conductor 440 is provided on the ejection end 431 of the inclined ejector 430 to fully dissipate heat and cool the ejection end 431 of the inclined ejector 430, reduce the temperature of the inclined ejector 430, and avoid expansion caused by high temperature.

[0060] In some embodiments of the present application, a mounting hole 435 is formed on the inclined push rod 430, and at least one end of the mounting hole 435 passes through the inclined push rod 430. The outer contour of the heat conductor 440 is adapted to the mounting hole 435, and is interference fit with the mounting hole 435, becoming an integral part with the inclined push rod 430.

[0061] The mounting hole 435 can be formed by wire cutting or CNC machining. It can penetrate the ejection end 431 of the inclined ejector 430 along the thickness direction or width direction of the ejection end 431 of the inclined ejector 430, such as Figures 6 to 8 The figure shows that the ejection end 431 of the inclined ejector rod 430 is penetrated along the width direction of the ejection end 431 of the inclined ejector rod 430. Figure 9 The diagram shows that the ejection end 431 of the inclined ejector rod 430 is penetrated along the thickness direction of the ejection end 431 of the inclined ejector rod 430 .

[0062] In some embodiments of the present application, both ends of the mounting hole 435 pass through the inclined ejector rod 430 , so that both ends of the heat conducting member 440 can be in contact with the air, further improving the heat conduction effect of the heat conducting member 440 .

[0063] In order to further improve the heat conduction and heat dissipation effect of the heat conducting member 440 and improve the heat dissipation efficiency of the inclined ejector rod 430 , heat dissipation holes 441 are formed on the heat conducting member 440 .

[0064] In some embodiments of the present application, heat dissipation holes 441 can be formed as through holes, blind holes, or slits in the heat conducting member 440, thereby increasing the contact area between the heat conducting member 440 and the air and improving the heat dissipation effect. Heat dissipation holes 441 can also provide space for thermal expansion and contraction of the heat conducting member 440, thereby improving its thermal expansion and contraction performance. The inner diameter of heat dissipation holes 441 should be as large as possible without affecting the normal use of the inclined roof.

[0065] In some embodiments of the present application, both ends of the mounting hole 435 of the inclined ejector 430 extend through the inclined ejector 430, and the heat dissipation hole 441 extends through the heat conducting member 440. The heat dissipation hole 441 is connected to an external air cooling device via a pipe. The external air cooling device can be connected through the heat dissipation hole 441 to blow air into the heat dissipation hole 441, further improving the heat dissipation effect.

[0066] In some embodiments of the present application, Figure 4 As shown, a first exhaust channel 436 is formed on the inclined ejector rod 430 along its extending direction, a second exhaust channel 421 is formed on the inclined ejector seat 420 , and a third exhaust channel 411 is formed on the ejection plate 410 .

[0067] One end of the first exhaust channel 436 is connected to the area where the heat conductor 440 is located (i.e., the mounting hole 435), the other end of the first exhaust channel 436 is connected to one end of the second exhaust channel 421, the other end of the second exhaust channel 421 is connected to one end of the third exhaust channel 411, and the other end of the third exhaust channel 411 is used to connect to an external negative pressure mechanism.

[0068] When the negative pressure mechanism is working, air can be sucked into the area where the heat conducting part 440 of the inclined push rod 430 is located through the third exhaust channel 411, the second exhaust channel 421, and the first exhaust channel 436, so as to quickly dissipate the heat conducted by the heat conducting part 440 and further improve the heat dissipation and cooling effect.

[0069] In some embodiments of the present application, a fourth exhaust channel (not shown) may be formed at the ejection end 431 of the inclined ejector pin 430. One end of the fourth exhaust channel is connected to the area where the heat conductor 440 is located, that is, connected to the mounting hole 435, and the other end of the fourth exhaust channel passes through the ejection end 431 of the inclined ejector pin 430. The fourth exhaust channel can further increase the contact area between the heat conductor 440 and the air, allowing the heat in the area where the heat conductor 440 is located to be dissipated through the fourth exhaust channel, further improving the heat dissipation and cooling effect.

[0070] In some embodiments of the present application, the fourth exhaust channel may be an exhaust hole or a heat dissipation gap, which is not specifically limited here.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A mold tilting top, characterized in that: include: Ejector plate; An inclined ejector seat, the inclined ejector seat being mounted on the ejection plate; The inclined ejector rod has one end as an ejection end and the other end as a connecting end. The ejection end is used to eject the product, and the connecting end is movably connected to the inclined ejector seat. A heat conductor is provided inside the inclined ejector rod. The thermal conductivity of the heat conductor is greater than that of the inclined ejector rod, and the heat conductor is not exposed outside the surface of the inclined ejector rod.

2. The mold lifter according to claim 1, characterized in that: The heat conducting member is arranged on the ejecting end of the inclined ejector rod.

3. The mold lifter according to claim 1 or 2, characterized in that: A mounting hole is formed on the inclined ejector rod, and at least one end of the mounting hole passes through the inclined ejector rod. The outer contour of the heat conducting member is adapted to the mounting hole and has an interference fit with the mounting hole.

4. The mold lifter according to claim 3, characterized in that: The heat conducting member is formed with heat dissipation holes.

5. The mold lifter according to claim 4, characterized in that: Both ends of the mounting hole pass through the inclined ejector rod, the heat dissipation hole passes through the heat conducting member, and the heat dissipation hole is connected to an external air cooling device through a pipeline.

6. The mold lifter according to claim 2, characterized in that: The inclined ejector rod is provided with a first exhaust passage arranged along its extension direction, the inclined ejector seat is provided with a second exhaust passage, and the ejector plate is provided with a third exhaust passage; One end of the first exhaust channel is connected to the area where the heat conductor is located, the other end of the first exhaust channel is connected to one end of the second exhaust channel, the other end of the second exhaust channel is connected to one end of the third exhaust channel, and the other end of the third exhaust channel is used to connect to an external negative pressure mechanism.

7. The mold lifter according to claim 2, characterized in that: A fourth exhaust channel is formed at the ejection end of the inclined ejector rod, one end of the fourth exhaust channel is communicated with the area where the heat conducting member is located, and the other end passes through the ejection end of the inclined ejector rod.

8. The mold lifter according to claim 1, characterized in that: The heat conducting element is made of beryllium copper, silver or aluminum alloy.

9. The mold lifter according to claim 1, characterized in that: The connecting end of the inclined ejector rod is connected with a rolling element, a sliding groove is formed on the inclined ejector seat, and the rolling element is rollingly connected in the sliding groove.

10. A mold, characterized in that: The invention comprises the mold inclined top according to any one of claims 1 to 9.

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