Sliding block core-pulling type injection mold for large product

Abstract

The utility model relates to the technical field of injection molds, in particular to a slider core-pulling type injection mold for large products, which comprises a movable mold, a fixed mold and a linkage connecting component, a first slider and a second slider are arranged on the fixed mold, the linkage connecting component comprises a driving part and a driven part, the driving part is in transmission connection with the driven part, and the first slider and the second slider are arranged on the movable mold. The first sliding block and the second sliding block are connected with the driving piece and the driven piece respectively. The utility model overcomes the defects that in the prior art, the two sliding blocks need to be driven by two independent driving mechanisms, so that not only is higher equipment cost caused, but also the production efficiency of products is influenced, through the arrangement of the linkage connecting assembly, the first sliding block can apply a reverse force to the second sliding block through the driven piece while being stressed to slide, and the production efficiency of the products is improved. Therefore, a driving mechanism used for driving the second sliding block to slide can be omitted, the equipment cost is saved, more space is vacated for products to flow out, the time for taking out the products is saved, and the production efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and more specifically, to a slider core-pulling injection mold for large products. Background Technology

[0002] Sliding core-pulling injection molds are generally used to manufacture complex-shaped plastic products with lateral protrusions or depressions. These molds achieve lateral parting and demolding through a lateral core-pulling mechanism, thereby producing complex structural products that cannot be directly demolded by simply opening and closing the mold.

[0003] A prior art bidirectional core-pulling injection mold includes a fixed mold assembly and a moving mold assembly. The fixed mold assembly includes a fixed template and a plurality of paired inclined guide pillars. Multiple cavities are formed within the fixed template. The inclined guide pillars are connected to the fixed template. A pair of inclined guide pillars are respectively located on both sides of the cavity and gradually expand away from the fixed template. A core plate is disposed within the moving template. The number of core-pulling structures is the same as the number of inclined guide pillars and they are arranged in a one-to-one correspondence. The core-pulling structure includes a connected slider and a side core. The moving template has a sliding groove for the slider to move, and the slider has a guide groove for the inclined guide pillars to slide. The moving template moves in the up-down direction so that the inclined guide pillars drive the slider to move in the left-right direction. A first injection cavity matching the shape of the first connecting part is formed between the core plate and the cavity. An injection groove is opened on the core plate, and a second injection cavity matching the shape of the second connecting part is formed between the side core and the injection groove.

[0004] For injection molds of large products, due to the high sliding resistance of the sliders, a drive mechanism is generally required to move them. However, since two sliders require two independent drive mechanisms, this results in higher equipment costs. Furthermore, the two drive mechanisms occupy space and interfere with product removal, affecting product flow efficiency and ultimately impacting production efficiency. Utility Model Content

[0005] In the existing technology, the sliding of two sliders requires two independent drive mechanisms, which not only leads to high equipment costs but also affects product production efficiency. This utility model provides a slider core-pulling injection mold for large products, which can reduce the number of drive mechanisms used, reduce equipment costs, and improve production efficiency.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0007] A slider-type injection mold for large products includes a moving mold and a fixed mold. The moving mold is provided with a first inclined guide post and a second inclined guide post, and the fixed mold is provided with a first slider and a second slider. In the mold-closed state, a product forming cavity is formed between the moving mold, the first slider, the second slider, and the fixed mold. When the moving mold approaches or moves away from the fixed mold, the first slider and the second slider slide towards each other or away from each other under the action of the first inclined guide post and the second inclined guide post, respectively. The mold also includes a linkage connection assembly, which includes a driving member and a driven member. The driving member and the driven member are connected in a transmission manner. The first slider and the second slider are connected to the driving member and the driven member, respectively. When the driving member slides with the first slider, the driven member drives the second slider to slide in the opposite direction.

[0008] It should be noted that since both the moving mold and the fixed mold are existing technologies, this manual will not provide a detailed description of their structure and working principle.

[0009] In the above technical solution, during mold opening, that is, when the moving mold leaves the fixed mold, the first slider slides outward of the fixed mold under the action of the first inclined guide post and the external drive mechanism. The driving member moves along with the sliding of the first slider while simultaneously applying a reverse force to the driven member, causing the driven member and the second slider connected to the driven member to move in opposite directions. In other words, while the first slider slides under force, it also applies a reverse force to the second slider through the driven member, causing the second slider to slide synchronously. Therefore, the drive mechanism for driving the second slider can be eliminated, saving equipment costs. Furthermore, since no drive mechanism is provided at the second slider, more space is freed up for product outflow, which helps save product removal time and thus improves production efficiency.

[0010] The driving component and the transmission component can be connected by gear transmission, synchronous belt transmission, or transmission chain transmission. It is understood that the relative directions of motion of the gears, synchronous belts, and transmission chains are opposite. When the driving component and the transmission component are respectively connected to the relative sides of one of these three components, the transmission component can move in the opposite direction when the driving component moves.

[0011] Preferably, the linkage assembly further includes a gear, with a first rack portion on the driving member and a second rack portion on the driven member. The first and second rack portions are located on opposite sides of the gear and mesh with it. Choosing gear transmission is more reliable. Gears can transmit larger torques, are less prone to slippage, and have higher transmission accuracy, thus ensuring that the slippage of the second slider and the first slider remains consistent. Furthermore, gear transmission is more stable, allowing for smoother movement of the driven member and the second slider.

[0012] Preferably, the fixed mold includes a fixed mold base and a B plate connected to the fixed mold base. The first slider and the second slider are both slidably disposed on the B plate. The B plate has a mounting cavity, and the gear is located within the mounting cavity and rotatably connected to the B plate. The first rack portion and the second rack portion are both located within the mounting cavity in both the open and closed mold states. This design firstly reduces the exposed area of ​​the driving component, driven component, and gear, thereby reducing the impact of dust or moisture on the first rack portion, gear, and second rack portion, and thus reducing wear and damage to these components. Secondly, it reduces the risk of accidental contact or operational errors, improving operational safety. Thirdly, it allows for a more compact mold structure, reducing interference from the driving and driven components to production activities outside the mold.

[0013] Preferably, the first rack portion is located at one end of the driving member, and the other end of the driving member is connected to the first slider; the second rack portion is located at one end of the driven member, and the other end of the driven member is connected to the second slider. Positioning the first rack portion and the second rack portion at the ends of the driving member and the driven member respectively helps to shorten the length of the driving member and the driven member, and also facilitates the installation and removal of the driving member and the driven member on the mold.

[0014] Preferably, one end of the driving member is provided with a first connecting portion, which is located outside the moving mold and connected to the outside of the first slider; one end of the driven member is provided with a second connecting portion, which is located outside the moving mold and connected to the outside of the second slider. This facilitates more efficient use of the internal space of the mold and reduces mutual interference between the internal structures of the mold.

[0015] Preferably, the system further includes a moving drive assembly, wherein both the first slider and the driving member are connected to the power output end of the moving drive assembly, that is, the driving member is connected to the outside of the first slider through the power output end of the moving drive assembly. The moving drive assembly can drive the first slider to slide during mold opening or closing, and it can be a cylinder drive mechanism, a hydraulic cylinder drive mechanism, a synchronous belt drive mechanism, a gear and rack drive mechanism, an electric push rod drive mechanism, a motor lead screw drive mechanism, etc.

[0016] Preferably, the moving drive component is a hydraulic cylinder, and both the first slider and the first connecting part are connected to the piston rod of the hydraulic cylinder. The hydraulic cylinder can provide large thrust and pull forces to meet the slider movement requirements of large injection molds, and it can also achieve precise stroke control and speed adjustment, thereby precisely controlling the sliding speed of the first slider.

[0017] Preferably, the thickness of the first rack portion is less than the thickness of the driving member, and a first groove is formed between the first rack portion and the driving member; the thickness of the second rack is less than the thickness of the driven member, and a second groove is formed between the second rack and the driven member; at least a portion of the gear is located in the first groove and meshes with the first rack portion, while at least another portion is located in the second groove and meshes with the second rack portion. This reduces the distance between the driving member and the driven member in their thickness direction, which is beneficial for reducing the thickness of plate B.

[0018] Preferably, a first buffer layer is provided on the side of the driving member where the first rack portion is located; a second buffer layer is provided on the side of the driven member where the second rack portion is located. During the mold closing process, the first and second buffer layers can buffer the mutual impact between the gear and the driving and driven members, thereby reducing gear wear.

[0019] Preferably, both the first and second buffer layers are made of rubber, meaning they are both made of rubber material. Rubber material has good shock absorption capacity, effectively reducing the impact force on the gears. Furthermore, rubber material has good aging resistance, a longer service life, and higher reliability.

[0020] The beneficial effects of this utility model are as follows: The first and second sliders are connected by a linkage assembly, which includes a driving member, a first rack portion disposed on the driving member, a gear, a driven member, and a second rack portion disposed on the driven member. By utilizing the meshing of the first rack portion with the gear and the meshing of the second rack portion with the rack, the driven member moves in the opposite direction while the driving member moves, thereby causing the second slider to slide in the opposite direction as the first slider slides. This eliminates the need for a drive mechanism to drive the second slider, saving equipment costs. Furthermore, since no drive mechanism is provided at the second slider, more space is freed up for product outflow, saving product removal time and thus improving production efficiency. Attached Figure Description

[0021] Figure 1 This is a structural diagram of a slider-type core-pulling injection mold for a large product.

[0022] Figure 2 yes Figure 1 A schematic diagram of the structure of part A in Example 1;

[0023] Figure 3 yes Figure 1 A schematic diagram of the structure of part A in Example 2.

[0024] In the attached figures: 1-moving mold; 2-fixed mold; 201-fixed mold base; 202-B plate; 2021-mounting cavity; 3-first slider; 4-second slider; 5-driving component; 501-first rack portion; 502-first connecting portion; 503-first groove; 504-first buffer layer; 6-driven component; 601-second rack portion; 602-second connecting portion; 603-second groove; 604-second buffer layer; 7-gear; 8-moving drive assembly. Detailed Implementation

[0025] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0026] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0028] Example 1

[0029] This embodiment is a first embodiment of a slider-type core-pulling injection mold for large products, combined with... Figure 1 and Figure 2As shown, it includes a moving mold 1 and a fixed mold 2. The moving mold 1 is provided with a first inclined guide post (not shown) and a second inclined guide post (not shown). The fixed mold 2 is provided with a first slider 3 and a second slider 4. In the closed state, a product forming cavity (not shown) is formed between the moving mold 1, the first slider 3, the second slider 4 and the fixed mold 2. When the moving mold 1 approaches or moves away from the fixed mold 2, the first slider 3 and the second slider 4 slide towards each other or away from each other under the action of the first inclined guide post and the second inclined guide post, respectively. The mold also includes a linkage connection assembly, which includes an active member 5 and a driven member 6. The active member 5 and the driven member 6 are connected by a transmission. The first slider 3 and the second slider 4 are connected to the active member 5 and the driven member 6, respectively. When the active member 5 slides with the first slider 3, the driven member 6 drives the second slider 4 to slide in the opposite direction.

[0030] It should be noted that since both the moving mold and the fixed mold are existing technologies, this manual will not provide a detailed description of their structure and working principle.

[0031] Furthermore, the linkage assembly also includes a gear 7. The driving member 5 has a first rack portion 501, and the driven member 6 has a second rack portion 601. The first rack portion 501 and the second rack portion 601 are located on opposite sides of the gear 7 and mesh with the gear 7. Choosing a gear transmission method is more reliable. The gear 7 can transmit a large torque, is not prone to slippage, and has high transmission accuracy, thus ensuring that the sliding amount of the second slider 4 and the first slider 3 remains consistent. In addition, the power transmission of the gear 7 is relatively smooth, which makes the movement of the driven member 6 and the second slider 4 more stable.

[0032] The working principle or workflow of this embodiment is as follows: When the mold opens, that is, when the moving mold 1 leaves the fixed mold 2, the first slider 3 slides outward from the fixed mold 2 under the action of the first inclined guide post and the external drive mechanism; while the driving member 5 moves along with the sliding of the first slider 3, it drives the gear 7 to rotate through the first rack part 501, and the gear 7 then drives the second rack part 601 to move in the opposite direction, so that the driven member 6 and the second slider 4 connected to the driven member 6 both move in the opposite direction. That is to say, while the first slider 3 is sliding under force, it also applies a reverse force to the second slider 4 through the driven member 6, so that the second slider 4 slides synchronously, thus eliminating the need for a drive mechanism to drive the sliding of the second slider 4.

[0033] The beneficial effects of this embodiment are as follows: The first and second sliders are connected by a linkage assembly, which includes a driving member, a first rack portion disposed on the driving member, a gear, a driven member, and a second rack portion disposed on the driven member. By utilizing the meshing of the first rack portion with the gear and the meshing of the second rack portion with the rack, the driven member moves in the opposite direction while the driving member moves, causing the second slider to slide in the opposite direction as the first slider slides. This eliminates the need for a drive mechanism to drive the second slider, saving equipment costs. Furthermore, since no drive mechanism is provided at the second slider, more space is freed up for product outflow, saving product removal time and thus improving production efficiency.

[0034] Example 2

[0035] This embodiment is a second embodiment of a slider core-pulling injection mold for large products. This embodiment is similar to embodiment 1, except that it combines... Figure 1 and Figure 3 As shown, the fixed mold 2 includes a fixed mold base 201 and a B plate 202 connected to the fixed mold base 201. The first slider 3 and the second slider 4 are both slidably disposed on the B plate 202. The B plate 202 has a mounting cavity 2021. The gear 7 is located within the mounting cavity 2021 and rotatably connected to the B plate 202. The first rack portion 501 and the second rack portion 601 are both located within the mounting cavity 2021 in both the open and closed mold states. This design firstly reduces the exposed area of ​​the driving member 5, the driven member 6, and the gear 7, thereby reducing the impact of dust or moisture on the first rack portion 501, the gear 7, and the second rack portion 601, thus reducing wear and damage. Secondly, it reduces the risk of accidental contact or operational errors, improving operational safety. Thirdly, it allows for a more compact mold structure, reducing interference from the driving member 5 and the driven member 6 to production activities outside the mold.

[0036] Furthermore, the first rack portion 501 is located at one end of the driving member 5, and the other end of the driving member 5 is connected to the first slider 3; the second rack portion 601 is located at one end of the driven member 6, and the other end of the driven member 6 is connected to the second slider 4. By respectively positioning the first rack portion 501 and the second rack portion 601 at the ends of the driving member 5 and the driven member 6, the length of the driving member 5 and the driven member 6 can be shortened, and the installation and removal of the driving member 5 and the driven member 6 on the mold can be facilitated.

[0037] Furthermore, one end of the driving member 5 is provided with a first connecting part 502, which is located outside the moving mold 1 and connected to the outside of the first slider 3; one end of the driven member 6 is provided with a second connecting part 602, which is located outside the moving mold 1 and connected to the outside of the second slider 4. This facilitates more effective use of the internal space of the mold and reduces mutual interference between the internal structures of the mold.

[0038] Furthermore, the thickness of the first rack portion 501 is less than the thickness of the driving member 5, and a first groove 503 is formed between the first rack portion 501 and the driving member 5; the thickness of the second rack is less than the thickness of the driven member 6, and a second groove 603 is formed between the second rack and the driven member 6; a portion of the gear 7 is located in the first groove 503 and meshes with the first rack portion 501, while another portion is located in the second groove 603 and meshes with the second rack portion 601. This reduces the distance between the driving member 5 and the driven member 6 in their thickness direction, that is, the distance in the vertical direction in the figure, which is beneficial to reducing the thickness of plate B 202.

[0039] Furthermore, a first buffer layer 504 is provided on the side where the first rack portion 501 is located on the driving member 5; a second buffer layer 604 is provided on the side where the second rack portion 601 is located on the driven member 6. During the mold closing process, the first buffer layer 504 and the second buffer layer 604 can buffer the mutual impact between the gear 7 and the driving member 5 and the driven member 6, thereby reducing the wear of the gear 7.

[0040] Furthermore, both the first buffer layer 504 and the second buffer layer 604 are made of rubber, meaning that both are constructed from rubber materials. Rubber materials have good shock absorption capabilities, effectively reducing the impact force on the gear 7. Moreover, rubber materials have good aging resistance, resulting in a longer service life and higher reliability.

[0041] Other features, working principles, and beneficial effects of this embodiment are the same as those of Embodiment 1.

[0042] Example 3

[0043] This embodiment is a third embodiment of a slider core-pulling injection mold for large products. This embodiment is similar to embodiment 2, except that, as Figure 1 As shown, it also includes a motion drive assembly 8. The first slider 3 and the driving member 5 are both connected to the power output end of the motion drive assembly 8. That is, the driving member 5 is connected to the outside of the first slider 3 through the power output end of the motion drive assembly 8. The motion drive assembly 8 can drive the first slider 3 to slide when the mold is opened or closed.

[0044] Specifically, the moving drive component 8 is a hydraulic cylinder, and both the first slider 3 and the first connecting part 502 are connected to the piston rod of the hydraulic cylinder. The hydraulic cylinder can provide large thrust and pull forces to meet the slider movement requirements of large injection molds, and it can also achieve precise stroke control and speed adjustment, thereby precisely controlling the sliding speed of the first slider 3.

[0045] Other features, working principles, and beneficial effects of this embodiment are the same as those of Embodiment 2.

[0046] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description, and it is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A slider-type injection mold for large products, comprising a moving mold (1) and a fixed mold (2), wherein the moving mold (1) is provided with a first inclined guide post and a second inclined guide post, and the fixed mold (2) is provided with a first slider (3) and a second slider (4), wherein a product forming cavity is formed between the moving mold (1), the first slider (3), the second slider (4) and the fixed mold (2) in the mold-closed state; wherein the first slider (3) and the second slider (4) slide towards each other or away from each other under the action of the first inclined guide post and the second inclined guide post, respectively, when the moving mold (1) approaches or moves away from the fixed mold (2), characterized in that, It also includes a linkage connection component, which includes an active component (5) and a driven component (6). The active component (5) and the driven component (6) are connected in a transmission manner. The first slider (3) and the second slider (4) are respectively connected to the active component (5) and the driven component (6). When the active component (5) slides with the first slider (3), the driven component (6) drives the second slider (4) to slide in the opposite direction.

2. The slider-type core-pulling injection mold for large products according to claim 1, characterized in that, The linkage assembly further includes a gear (7), the driving member (5) is provided with a first rack portion (501), and the driven member (6) is provided with a second rack portion (601). The first rack portion (501) and the second rack portion (601) are respectively located on opposite sides of the gear (7) and mesh with the gear (7).

3. The slider-type core-pulling injection mold for large products according to claim 2, characterized in that, The fixed mold (2) includes a fixed mold base (201) and a B plate (202) connected to the fixed mold base (201). The first slider (3) and the second slider (4) are slidably disposed on the B plate (202). The B plate (202) is provided with an installation cavity (2021). The gear (7) is located in the installation cavity (2021) and is rotatably connected to the B plate (202). The first rack portion (501) and the second rack portion (601) are both located in the installation cavity (2021) in the mold opening and mold closing states.

4. The slider-type core-pulling injection mold for large products according to claim 3, characterized in that, The first rack portion (501) is located at one end of the driving member (5), and the other end of the driving member (5) is connected to the first slider (3); the second rack portion (601) is located at one end of the driven member (6), and the other end of the driven member (6) is connected to the second slider (4).

5. A slider-type core-pulling injection mold for large products according to claim 4, characterized in that, One end of the driving member (5) is provided with a first connecting part (502), which is located outside the moving mold (1) and connected to the outside of the first slider (3); one end of the driven member (6) is provided with a second connecting part (602), which is located outside the moving mold (1) and connected to the outside of the second slider (4).

6. A slider-type core-pulling injection mold for large products according to claim 5, characterized in that, It also includes a motion drive assembly (8), wherein the first slider (3) and the active element (5) are both connected to the power output end of the motion drive assembly (8).

7. A slider-type core-pulling injection mold for large products according to claim 6, characterized in that, The moving drive assembly (8) is a hydraulic cylinder, and the first slider (3) and the first connecting part (502) are both connected to the piston rod of the hydraulic cylinder.

8. A slider-type core-pulling injection mold for large products according to claim 3, characterized in that, The thickness of the first rack portion (501) is less than the thickness of the driving member (5), and a first groove (503) is formed between the first rack portion (501) and the driving member (5); the thickness of the second rack is less than the thickness of the driven member (6), and a second groove (603) is formed between the second rack and the driven member (6); at least a portion of the gear (7) is located in the first groove (503) and meshes with the first rack portion (501), while at least another portion is located in the second groove (603) and meshes with the second rack portion (601).

9. A slider-type core-pulling injection mold for large products according to claim 8, characterized in that, A first buffer layer (504) is provided on the side where the first rack portion (501) is located on the driving member (5); a second buffer layer (604) is provided on the side where the second rack portion (601) is located on the driven member (6).

10. A slider-type core-pulling injection mold for large products according to claim 9, characterized in that, Both the first buffer layer (504) and the second buffer layer (604) are made of rubber.

Images