Large-angle pitched roof structure

Abstract

The utility model provides a wide-angle pitched roof structure which comprises an ejector rod, a pitched roof guide block and a pitched roof block, an inclined rod is arranged at the bottom of the pitched roof block, an inclined groove corresponding to the inclined rod and a vertical groove corresponding to the ejector rod are formed in the pitched roof guide block, and the inclined rod is arranged in the inclined groove. The top rod and the inclined rod are movably arranged in the vertical groove and the inclined groove in a penetrating mode respectively. A certain angle is formed between the extending direction of the vertical groove and the extending direction of the inclined groove, and at least one part of the outer surface of the inclined rod abuts against at least one part of the outer surface of the ejector rod all the time. The vertical groove and the inclined groove which are communicated with each other are respectively formed in the inclined ejection guide block, so that the inclined ejection block realizes inclined ejection under the pushing of the ejection rod and the limiting action of the inclined groove, and the inclined angles of the vertical groove and the inclined groove are relatively large, so that the inclined ejection mechanism is suitable for inclined ejection of various products with different specifications; and meanwhile, the ejector rod and the inclined rod are provided with the racks which are matched with each other, so that the inclined ejector has good ejection stability, the production cost of a product is saved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of injection molds, and particularly relates to a large-angle angled lifter structure. Background Art

[0002] Injection molding refers to injecting molten plastic materials into the cavity of a mold under high pressure. After cooling and solidifying, the front mold and the rear mold are separated, and an ejection mechanism is used to eject the solidified product. Currently, injection molding is suitable for mass production of products with complex shapes and is one of the important processing methods in industrial production.

[0003] During actual production, many injection products are designed with undercut structures. Using the traditional up-and-down ejection method is likely to damage the undercuts that are inconsistent with the ejection direction. Therefore, an angled lifter method is needed to eject injection products with undercuts. However, the existing angled lifter structures have a small angled lifter angle and cannot meet large-sized injection products with large undercut structures. The angled lifter structures with a large angled lifter angle are generally large in volume and not convenient for part replacement and maintenance. At the same time, the existing angled lifter structures are relatively complex and involve multiple cooperating components. Therefore, when the component cooperation is unstable, it is likely to cause problems such as poor angled lifter quality or component damage. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] The utility model provides a large-angle angled lifter structure, aiming to solve the problems that the existing angled lifter structures have a small angled lifter angle and unstable angled lifter effects.

[0006] (2) Technical Solutions

[0007] The utility model provides a large-angle angled lifter structure, including a ejector rod, an angled lifter guide block, and an angled lifter block. An angled rod is provided at the bottom of the angled lifter block. An angled groove corresponding to the angled rod and a vertical groove corresponding to the ejector rod are provided in the angled lifter guide block. The ejector rod and the angled rod are respectively movably inserted into the vertical groove and the angled groove. Wherein, the extending directions of the vertical groove and the angled groove form a certain angle, and at least a part of the outer surfaces of the angled rod and the ejector rod always abut against each other.

[0008] Further, at least part of the vertical groove and the angled groove communicate with each other.

[0009] Further, on the opposite surfaces of the ejector rod and the angled rod, transverse racks that cooperate with each other are provided on the side walls of both. The rack on the ejector rod meshes with the rack on the angled rod.

[0010] Further, the rack meshing part between the ejector rod and the angled rod is arranged in the communicating area of the angled groove and the vertical groove.

[0011] Further, the vertical length D2 of the rack on the ejector rod is greater than the vertical length D1 of the vertical groove, and the projected length of the rack on the inclined rod in the vertical direction corresponds to the vertical length of the rack on the ejector rod.

[0012] Further, an inclination angle Q is provided between the vertical groove and the inclined groove, and the inclination angle Q is 0 - 45 degrees.

[0013] Further, a first inclined surface and a second inclined surface opposite to the first inclined surface are provided in the inclined groove. The first inclined surface and the second inclined surface guide the movement of the inclined rod, and the surfaces of the first inclined surface and the second inclined surface are flat and smooth.

[0014] Further, the ejector rod, the inclined ejector guide block, and the inclined ejector block are detachably connected to each other, and a fixing groove is provided on the side wall of the inclined ejector block.

[0015] Further, the bottom area of the inclined ejector block is larger than the cross-sectional area of the inclined groove. When not ejected, the bottom of the inclined ejector block abuts against the top of the inclined ejector guide block.

[0016] Further, a thimble plate is provided at the bottom of the ejector rod, and the bottom of the ejector rod is fixedly connected to the thimble plate by countersunk head screws.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] By respectively providing a vertically connected vertical groove and an inclined groove in the inclined ejector guide block, the inclined ejector block is tilted and ejected under the push of the ejector rod and the limiting action of the inclined groove. Moreover, the inclination angles of the vertical groove and the inclined groove are relatively large, which is suitable for the inclined ejection of various products with different specifications. At the same time, racks that cooperate with each other are provided on both the ejector rod and the inclined rod, making the inclined ejection have good ejection stability, facilitating the saving of the production cost of products and the improvement of production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0020] Figure 2 It is an exploded view of the overall structure of the present utility model.

[0021] Figure 3 It is a schematic diagram of the structure of the inclined ejector guide block of the present utility model.

[0022] Figure 4 It is a cross-sectional view of the inclined ejector guide block of the present utility model.

[0023] Figure 5 It is a partial explosion of the present utility model Figure 1 .

[0024] Figure 6 Partial explosion of the present utility model Figure 2 .

[0025] Figure 7 Schematic diagram of the ejection process of the present utility model Figure 1 .

[0026] Figure 8 Schematic diagram of the ejection process of the present utility model Figure 2 .

[0027] Figure 9 Schematic diagram of the inclined ejector block structure of the present utility model.

[0028] Figure 10 Cross-sectional view of the ejector rod and ejector pin plate of the present utility model.

[0029] Reference numerals: 1 - ejector rod, 2 - inclined ejector guide block, 21 - vertical groove, 22 - inclined groove, 221 - first inclined surface, 222 - second inclined surface, 3 - inclined ejector block, 31 - inclined rod, 32 - fixed groove, 4 - ejector pin plate, 41 - jack, 42 - counterbore, 5 - countersunk head screw, 6 - rack. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0031] As Figure 1-7 shown, the present utility model provides a large-angle inclined ejector structure, including an ejector rod 1, an inclined ejector guide block 2, and an inclined ejector block 3. The bottom of the inclined ejector block 3 is provided with an inclined rod 31. The inclined ejector guide block 2 is provided with an inclined groove 22 corresponding to the inclined rod 31 and a vertical groove 21 corresponding to the ejector rod 1. The ejector rod 1 and the inclined rod 31 are respectively movably inserted into the vertical groove 21 and the inclined groove 22. Among them, the extending direction of the vertical groove 21 and the extending direction of the inclined groove 22 form a certain angle;

[0032] During use, the inclined ejector guide block 2 is fixedly arranged on the front mold (not shown) or the rear mold (not shown) of the mold (not shown). The top of the inclined ejector block 3 is attached to the product (not shown), and its bottom abuts against the top of the ejector rod 1. The inclined rod 31 is inserted into the inclined groove 22, and the ejector rod 1 is inserted into the vertical groove 21. At the same time, at least a part of the outer surfaces of the inclined rod 31 and the ejector rod 1 always abut against each other; at this time, the ejector rod 1 moves up or down relative to the inclined ejector guide block 2, thereby driving the inclined ejector block 3 to move obliquely upward or obliquely downward along the extending direction of the inclined groove 22, and further achieving the purpose of oblique ejection and demolding of the product;

[0033] By setting the angle between the inclined groove 22 and the vertical groove 21, the angle of the angled ejector can be increased to a large extent, so as to adapt to and realize the angled ejection of products of various sizes; at the same time, the angled ejector block 3 is detachably connected to the angled ejector guide block 2 and has a small structure. When other products need to be ejected, only the corresponding angled ejector block 3 needs to be replaced, which is beneficial to reducing the manufacturing cost and production convenience; furthermore, the assembly structure of the large-angle angled ejector structure is simple. The ejector rod 1 drives the angled ejector block 3 to eject, and the ejection direction of the angled ejector block 3 is limited by the inclined groove 22. Compared with the traditional angled ejector mechanism, the large-angle angled ejector structure of the present utility model not only has a smaller volume, but also has a more stable and safer ejection effect.

[0034] Specifically, as Figure 2 shown, in order to improve the assembly convenience of the large-angle angled ejector structure, the bottom area of the angled ejector block 3 is larger than the cross-sectional area of the inclined groove 22. Therefore, when not ejected, the bottom of the angled ejector block 3 is simultaneously in contact with the top of the ejector rod 1 and the top of the angled ejector guide block 2, thereby improving the molding stability of the product in the injection molding state of the mold;

[0035] Specifically, as Figure 3-4 shown, at least a part of the vertical groove 21 and the inclined groove 22 are interconnected. When the ejector rod 1 and the inclined rod 31 are respectively arranged in the vertical groove 21 and the inclined groove 22, at least a part of the ejector rod 1 and the inclined rod 31 are in contact with each other, thereby increasing the friction force between the two, and further improving the moving stability of the ejector rod 1 driving the inclined rod 31 to eject;

[0036] Furthermore, as Figure 5 shown, on the opposite surfaces of the ejector rod 1 and the inclined rod 31, transverse racks 6 that cooperate with each other are provided on the side walls of both. During use, the rack 6 on the ejector rod 1 meshes with the rack 6 on the inclined rod 31. Since the racks 6 are all arranged horizontally, sufficient lateral support force is provided for the angled ejection of the ejector rod 1 driving the inclined rod 31, and the moving stability of the inclined rod 31 ejecting is further improved;

[0037] Even further, as Figure 5-7 shown, the meshing part of the ejector rod 1 and the inclined rod 31 is located within the angled ejector guide block 2. In order to further improve the meshing effect, the meshing part of the ejector rod 1 and the inclined rod 31 is arranged in the communication area of the inclined groove 22 and the vertical groove 21. The movement of the ejector rod 1 and the inclined rod 31 is limited by the inner wall of the angled ejector guide block 2, so that the ejector rod 1 and the inclined rod 31 always maintain a stable and good meshing effect;

[0038] Preferably, the vertical length D2 of the rack 6 on the ejector rod 1 is greater than the vertical length D1 of the vertical groove 21, and the projected length of the rack 6 on the inclined rod 31 in the vertical direction corresponds to and is both D2 with the vertical length of the rack 6 on the ejector rod. That is to say, during the ejection process, at least a part of the rack 6 on the ejector rod 1 is always located outside the vertical groove 21. By extending the vertical length D2 of the rack 6 on the ejector rod 1, the inclined rod 31 has an ejection effect of continuous inclined ejection and a longer inclined ejection distance, so that the large-angle inclined ejection structure has stronger ejection compatibility for a variety of different products;

[0039] More preferably, on the premise of ensuring the same inclined ejection effect, the inclined rod 31 and the ejector rod 1 can be of a cuboid structure or a cylinder structure.

[0040] Specifically, as Figure 4 shown, there is an inclination angle Q between the vertical groove 21 and the inclined groove 22. Since the ejector rod 1, the inclined ejection guide block 2 and the inclined ejection block 3 are all detachably connected, the user can set multiple inclined ejection guide blocks 2 with different inclination angles Q for replacement and assembly according to actual usage requirements. Among them, on the premise of ensuring good inclined ejection stability and a long service life, the inclination angle Q between the vertical groove 21 and the inclined groove 22 is 0-45 degrees;

[0041] Furthermore, as Figure 7 shown, a first inclined surface 221 is provided in the inclined groove 22. During inclined ejection, the inclined rod 31 is ejected obliquely upward under the drive of the ejector rod 1, and the inclined rod 31 always maintains frictional contact with the first inclined surface 221 during the ejection process. The setting of the first inclined surface 221 has a limiting effect on the ejection of the inclined rod 31 and makes it have better ejection stability;

[0042] Even further, a second inclined surface 222 opposite to the first inclined surface 221 is also provided in the inclined groove 22. When ejecting and resetting, the inclined ejection block 3 moves obliquely downward to reset under the action of its own gravity or the pulling force of the ejector rod 1 and finally abuts against the top of the inclined ejection guide block 2; during the reset process, the inclined rod 31 also always maintains frictional contact with the second inclined surface 222. The setting of the second inclined surface 222 has a guiding effect on the movement and reset of the inclined ejection block 3;

[0043] Preferably, the inclined ejection guide block 2 is made of materials such as engineering plastics, cast steel or cemented carbide with high strength, high hardness and strong wear resistance. The surfaces of the first inclined surface 221 and the second inclined surface 222 are flat and smooth, so as to improve the inclined ejection stability of the inclined ejection block 3 and at the same time improve the service life of the inclined ejection block 3 and the inclined ejection guide block 2.

[0044] Specifically, as Figure 8-9 shown, during the angled ejection process, the moving direction of the projection of the angled ejection block 3 in the horizontal direction is along the direction of the axis L. The angled ejection block 3 includes an A end and a B end in the direction of the axis L. When ejecting, the moving direction of the projection of the angled ejection block 3 in the horizontal direction is the AB direction. When resetting, the moving direction of the projection of the angled ejection block 3 in the horizontal direction is the BA direction;

[0045] Furthermore, a fixing groove 32 is provided on the side wall of the A end of the angled ejection block 3. In actual design, the product usually has a reverse buckle structure or a flanging structure, etc. When the setting direction of this structure is inconsistent with the ejection direction, forced ejection is likely to cause damage to this structure. Therefore, the angled ejection method needs to be adopted, and the shape of the fixing groove 32 corresponds to the reverse buckle structure or the flanging structure;

[0046] During angled ejection, the projection of the angled ejection block 3 in the horizontal direction moves towards the AB direction, realizing the separation of the fixing groove 32 from the reverse buckle structure or the flanging structure of the product, etc., so as to achieve the purpose of lateral demolding, and at the same time ensure that the reverse buckle structure or the flanging structure, etc., has good integrity.

[0047] Specifically, as Figure 10 shown, the bottom of the ejector rod 1 is fixedly connected to the ejector pin plate 4. When in use, the ejector pin plate 4 moves up and down and drives the ejector rod 1 to move up and down, thereby driving the ejection and reset of the angled ejection block 3;

[0048] Furthermore, a jack 41 corresponding to the bottom end of the ejector rod 1 is provided at the top of the ejector pin plate 4. A countersunk hole 42 corresponding to the jack 41 up and down is provided at the bottom of the ejector pin plate 4. A countersunk screw 5 is provided in the countersunk hole 42. The top of the countersunk screw 5 passes through the countersunk hole 42 and the jack 41 and is fixedly connected to the bottom end of the ejector rod 1;

[0049] The working principle of the present invention will be described in detail below;

[0050] During installation, first fixedly connect the angled ejection guide block 2 to the front mold or the rear mold, and then insert the ejector rod 1 and the angled rod 31 into the vertical groove 21 and the inclined groove 22 respectively. At this time, the top of the angled ejection block 3 abuts against the product, and its bottom abuts against the top of the ejector rod 1 and the top of the angled ejection guide block 2 respectively. The bottom of the ejector rod 1 is fixedly connected to the ejector pin plate 4 through the countersunk screw 5;

[0051] During use, the ejector plate 4 drives the ejector rod 1 to move upward. The top of the ejector rod 1 pushes the lifter block 3 to move upward. At the same time, under the limitation of the inclined groove 22 and the support and limitation of the rack 6, the lifter block 3 is ejected obliquely upward. Since the lifter block 3 is ejected obliquely upward while the ejector rod 1 is ejected upward, during the ejection process, the bottom of the lifter block 3 will move in the AB direction relative to the top of the ejector rod 1 until they are separated from each other. After separation, the supporting force for the ejection of the lifter block 3 by the ejector rod 1 is provided by the rack 6;

[0052] During reset, the ejector plate 4 drives the ejector rod 1 to move downward for reset. The lifter block 3 synchronously moves obliquely downward for reset under the action of its own gravity, the pulling force of the ejector rod 1, and the limitation of the inclined groove 22, preparing for the next ejection.

[0053] The innovation of the present utility model lies in that by respectively providing a vertically communicating groove and an inclined groove in the lifter guide block, the lifter block is obliquely ejected under the push of the ejector rod and the limitation of the inclined groove, and the inclination angles of the vertically communicating groove and the inclined groove are relatively large, which is applicable to the oblique ejection of various products with different specifications; at the same time, racks that cooperate with each other are provided on both the ejector rod and the lifter rod, so that the oblique ejection has good ejection stability, which is convenient for saving the production cost of products and improving production efficiency.

[0054] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

[0055] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A large-angle inclined lifter structure, characterized in that, It includes a ejector rod (1), an angled ejector guide block (2) and an angled ejector block (3). A diagonal rod (31) is provided at the bottom of the angled ejector block (3). An angled groove (22) corresponding to the diagonal rod (31) and a vertical groove (21) corresponding to the ejector rod (1) are provided in the angled ejector guide block (2). The ejector rod (1) and the diagonal rod (31) are respectively movably inserted into the vertical groove (21) and the angled groove (22). Wherein, the extending direction of the vertical groove (21) and the extending direction of the angled groove (22) form a certain angle, and at least a part of the outer surfaces of the diagonal rod (31) and the ejector rod (1) are always in contact with each other.

2. The large-angle inclined ejector structure according to claim 1, wherein The vertical groove (21) and the angled groove (22) are at least partially communicated with each other.

3. The large-angle angled lifter structure according to claim 2, characterized in that, On the opposite surfaces of the ejector rod (1) and the diagonal rod (31), transverse racks (6) which are correspondingly matched with each other are provided on the side walls of both. The rack (6) on the ejector rod (1) meshes with the rack (6) on the diagonal rod (31).

4. The large-angle angled lifter structure according to claim 3, wherein, The meshing part of the racks (6) between the ejector rod (1) and the diagonal rod (31) is arranged in the communication area of the angled groove (22) and the vertical groove (21).

5. The large-angle inclined top structure according to claim 4, characterized in that, The vertical length D2 of the rack (6) on the ejector rod (1) is greater than the vertical length D1 of the vertical groove (21). The projected length of the rack (6) on the diagonal rod (31) in the vertical direction corresponds to the vertical length of the rack (6) on the ejector rod.

6. The large-angle inclined ejector pin structure according to claim 1, wherein An inclination angle Q is provided between the vertical groove (21) and the angled groove (22), and the inclination angle Q is 0 - 45 degrees.

7. The large-angle inclined lifter structure according to claim 6, wherein A first inclined surface (221) and a second inclined surface (222) opposite to the first inclined surface (221) are provided in the angled groove (22). The first inclined surface (221) and the second inclined surface (222) guide the movement of the diagonal rod (31), and the surfaces of the first inclined surface (221) and the second inclined surface (222) are flat and smooth.

8. The large-angle inclined top structure according to claim 1, wherein The ejector rod (1), the angled ejector guide block (2) and the angled ejector block (3) are detachably connected to each other. A fixing groove (32) is provided on the side wall of the angled ejector block (3).

9. The large-angle inclined lifter structure according to claim 8, wherein The bottom area of the angled ejector block (3) is larger than the cross-sectional area of the angled groove (22). When not ejected, the bottom of the angled ejector block (3) abuts against the top of the angled ejector guide block (2).

10. The large-angle inclined lifter structure according to claim 1, characterized in that, A ejector plate (4) is provided at the bottom of the ejector rod (1). The bottom of the ejector rod (1) is fixedly connected to the ejector plate (4) by a countersunk head screw (5).

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