Movable mold structure and injection mold

Abstract

The utility model discloses a movable mold structure and an injection mold, and relates to the technical field of part production, the movable mold structure comprises a movable mold plate, a sliding block assembly and a transmission assembly, one side of the movable mold plate in a first direction is provided with a cavity, and an insert pin is inserted into the cavity; the sliding block assembly is arranged on the side, provided with the mold cavity, of the movable mold plate and can be movably arranged in the second direction relative to the movable mold plate, the sliding block assembly comprises a first sliding block, a second sliding block and a limiting piece arranged between the first sliding block and the second sliding block, and the side, facing the movable mold plate, of the first sliding block is provided with a containing hole allowing the insert pin to be inserted therein; the second sliding block can be movably arranged in the second direction relative to the first sliding block, and the limiting piece is used for limiting the second sliding block to move in the direction away from the first sliding block after the insert pin is separated from the containing hole. According to the technical scheme, the insert pin cannot collide with the first sliding block, and meanwhile, the mold opening process can be kept continuous, so that the production efficiency is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of parts production, in particular to a movable mold structure and an injection mold. Background Art

[0002] For injection molds, the hole structure on the product is usually formed by inserting a pin into the molding cavity; in related technologies, the pin may be inserted into the rear mold slider. Since the moving direction of the rear mold slider is different from the mold opening direction, interference occurs between the pin and the rear mold slider during the mold opening process, resulting in damage. The pin needs to be removed in advance, and when the position of the product corresponding to the pin is higher, a robotic arm is required, resulting in low efficiency in opening the entire injection mold. Utility Model Content

[0003] The main purpose of the utility model is to provide a movable mold structure and an injection mold, aiming to at least solve the problem of interference between the insert pin and the rear mold slider in the related art.

[0004] To achieve the above-mentioned purpose, the present invention proposes a movable mold structure for an injection mold, comprising:

[0005] A movable platen, one side of which in the first direction is provided with a cavity and is provided with an insert pin;

[0006] A slider assembly is provided on a side of the movable plate where the mold cavity is provided, and is movable relative to the movable plate in a second direction. The slider assembly includes a first slider, a second slider, and a limiting member provided between the first slider and the second slider. The first slider is used to enclose the mold cavity to form a molding cavity. A receiving hole for inserting the inlay pin is provided on a side of the first slider facing the movable plate. The second slider is movable relative to the first slider in the second direction. The limiting member is used to limit the second slider from moving in a direction away from the first slider after the inlay pin is separated from the receiving hole, so that the second slider drives the first slider to move together. And,

[0007] The transmission assembly is transmission-connected to the movable plate and the second sliding block, and is used to drive the second sliding block to move along the second direction when the movable plate moves along the first direction.

[0008] In one embodiment, the second sliding block is located on one side of the first sliding block in the second direction.

[0009] In one embodiment, the limiting member includes:

[0010] a main body extending along the second direction, with one end connected to the first slider and the other end passing through the second slider; and

[0011] a limiting end portion, at least a portion of which protrudes outward from the main body portion in the first direction, the limiting end portion being disposed at the other end of the main body portion and spaced apart from a side of the second slider away from the first slider;

[0012] After the insert pin is separated from the receiving hole, the insert pin abuts against a side of the second slider away from the first slider.

[0013] In one embodiment, the distance between the limiting end and the second sliding block is equal to the depth of the inserting pin inserted into the receiving hole.

[0014] In one embodiment, a receiving groove is provided on a side of the second slider away from the first slider in the second direction;

[0015] The limiting end portion is located in the accommodating groove and is spaced apart from a side wall of the accommodating groove in the second direction.

[0016] In one embodiment, the limiting member includes a limiting screw, the screw rod of the limiting screw constitutes the main body, and the head of the limiting screw constitutes the limiting end portion.

[0017] In one embodiment, the slider assembly further includes a reset member disposed between the first slider and the second slider, and the reset member is configured to provide a driving force for the first slider to move in a second direction away from the first slider.

[0018] In one embodiment, the restoring member includes an elastic member, and the two ends of the elastic member in the second direction are respectively connected to the first slider and the second slider, and can be extended and retracted in the second direction.

[0019] In one embodiment, the transmission assembly includes a guide column provided on the movable platen and a guide hole provided on the second slider, the guide column is inclined in a direction away from the cavity, and the side wall of the guide hole is correspondingly inclined.

[0020] The present invention further provides an injection mold, wherein the injection mold includes a movable mold structure, and the movable mold structure includes:

[0021] A movable platen, one side of which in the first direction is provided with a cavity and is provided with an insert pin;

[0022] A slider assembly is provided on a side of the movable plate where the mold cavity is provided, and is movable relative to the movable plate in a second direction. The slider assembly includes a first slider, a second slider, and a limiting member provided between the first slider and the second slider. The first slider is used to enclose the mold cavity to form a molding cavity. A receiving hole for inserting the inlay pin is provided on a side of the first slider facing the movable plate. The second slider is movable relative to the first slider in the second direction. The limiting member is used to limit the second slider from moving in a direction away from the first slider after the inlay pin is separated from the receiving hole, so that the second slider drives the first slider to move together. And,

[0023] The transmission assembly is transmission-connected to the movable plate and the second sliding block, and is used to drive the second sliding block to move along the second direction when the movable plate moves along the first direction.

[0024] In the technical solution of the present invention, the insert pin provided on the movable platen is inserted into the receiving hole on the first slider, and the second slider is movable relative to the first slider in a second direction. A stopper between the first and second sliders is capable of limiting the second slider from moving in a direction away from the first slider after the insert pin is separated from the receiving hole. The transmission assembly is transmission-connected to the movable platen and the second slider, and is configured to drive the second slider to move in the second direction when the movable platen moves in the first direction. With this arrangement, during mold opening, the movable platen moves in the first direction away from the first slider, and the insert pin on the movable platen moves therewith until it is gradually withdrawn from the receiving hole. When the movable platen moves, the transmission assembly drives the second slider to move in the second direction away from the first slider. Since the first and second sliders are movable relative to each other, the first slider remains stationary until the insert pin is completely separated from the receiving hole. At this time, the first slider is driven by the second slider to slide under the action of the stopper until demolding is completed. During the entire process, the insert pin does not collide with the first slider, and the mold opening process can be maintained continuously, thereby maintaining production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0026] Figure 1It is a schematic diagram of a part of the structure of an injection mold in the prior art;

[0027] Figure 2 A structural diagram of an embodiment of a movable mold structure provided by the utility model;

[0028] Figure 3 for Figure 2 AA cross-sectional structural diagram;

[0029] Figure 4 for Figure 1 A schematic diagram of a partial three-dimensional structure of the middle slider assembly;

[0030] Figure 5 for Figure 1 Structural diagram of the demoulding process in the middle movable mold structure;

[0031] Figure 6 for Figure 1 Schematic diagram of the structure after the middle movable mold structure is demoulded.

[0032] Description of Figure Numbers:

[0033] 100. Moving mold structure; 1. Moving mold plate; 11. Cavity; 12. Inlay pin; 2. Slider assembly; 21. First slider; 211. Accommodating hole; 22. Second slider; 221. Accommodating groove; 23. Limiting member; 231. Main body; 232. Limiting end; 24. Resetting member; 3. Transmission assembly; 31. Guide column; 32. Guide hole; 200. Product.

[0034] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] 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 shall fall within the scope of protection of the present invention.

[0036] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] For injection molds, the hole structure on the product is usually formed by inserting a pin into the molding cavity; in the related art, refer to the attached Figure 1 The inserting pin 1' may be inserted into the rear mold slider. Since the movement direction of the rear mold slider 2' is different from the mold opening direction, interference occurs between the inserting pin 1' and the rear mold slider 2' during the mold opening process, resulting in damage. The inserting pin 1' needs to be removed in advance. When the position of the product 200 corresponding to the inserting pin 1' is higher, a robotic arm is required, resulting in low efficiency of the entire injection mold opening.

[0039] The main purpose of the utility model is to provide a movable mold structure and an injection mold, aiming to at least solve the problem of interference between the insert pin and the rear mold slider in the related art.

[0040] See also Figure 2-Figure 6In one embodiment of the present utility model, the movable mold structure 100 is used for an injection mold, including a movable template 1, a slider assembly 2 and a transmission assembly 3. The movable template 1 is provided with a cavity 11 on one side in a first direction, and is inserted with an inlay pin 12; the slider assembly 2 is provided on the side of the movable template 1 provided with the cavity 11, and can be movably provided along the second direction relative to the movable template 1, the slider assembly 2 includes a first slider 21, a second slider 22 and a limiter 23 provided between the first slider 21 and the second slider 22, the first slider 21 is used to enclose the cavity 11 to form the molding cavity 11, the second slider 22 A slider 21 is provided with a receiving hole 211 for inserting the inserting pin 12 on the side facing the movable template 1, and the second slider 22 can be moved along the second direction relative to the first slider 21. The limiting member 23 is used to limit the second slider 22 from moving in a direction away from the first slider 21 after the inserting pin 12 is separated from the receiving hole 211, so that the second slider 22 drives the first slider 21 to move together; the transmission assembly 3 is connected to the movable template 1 and the second slider 22, so as to drive the second slider 22 to move along the second direction when the movable template 1 moves along the first direction.

[0041] In the technical solution of the present invention, the inlay pin 12 arranged on the movable template 1 is inserted into the accommodating hole 211 on the first slider 21, and the second slider 22 can be movably arranged along the second direction relative to the first slider 21, and the limiting member 23 between the first slider 21 and the second slider 22 can limit the second slider 22 from moving in the direction away from the first slider 21 after the inlay pin 12 is separated from the accommodating hole 211, and the transmission assembly 3 is used to transmit and connect the movable template 1 and the second slider 22, so as to drive the second slider 22 to move in the second direction when the movable template 1 moves in the first direction; with such a configuration, when the mold is opened, the movable template 1 moves along the first direction away from the first slider 21. When the movable template 1 moves, the inserting pin 12 on the movable template 1 follows the movement until it is gradually pulled out of the accommodating hole 211. When the movable template 1 moves, the second slider 22 is driven by the transmission component 3 to move along the second direction away from the first slider 21. Since the first slider 21 and the second slider 22 can move relative to each other, the first slider 21 remains stationary until the inserting pin 12 is completely disengaged from the accommodating hole 211. Then, the first slider 21 is driven to slide by the second slider 22 under the action of the limiting member 23 until demoulding is completed. During the whole process, the inserting pin 12 will not collide with the first slider 21, and the mold opening process can remain continuous, thereby maintaining production efficiency.

[0042] There are many forms of positional relationship between the second slider 22 and the first slider 21. The second slider 22 can be located on the side of the first slider 21 in the first direction, or on the side of the first slider 21 in the second direction. It can be understood that since the first slider 21 needs to be used to enclose the mold cavity 11 to form the molding cavity 11, when the second slider 22 is set on one side of the first slider 21, it can only be set on the side of the first slider 21 away from the movable template 1, which results in a larger distance between the second slider 22 and the movable template 1. The movement of the second slider 22 is driven by the movable template 1 and the transmission assembly 3, which will cause the structure of the transmission assembly 3 connecting the second slider 22 and the movable template 1 to be more complicated, which is not conducive to the design of the injection mold. Therefore, in an embodiment of the present utility model, the second slider 22 is located on the side of the first slider 21 in the second direction.

[0043] In this embodiment, please refer to Figure 4 、 Figure 5 and Figure 6 The limiting member 23 includes a main body 231 and a limiting end 232. The main body 231 extends along the second direction, one end of which is connected to the first slider 21, and the other end passes through the second slider 22. The limiting end 232 is at least partially protruded to the outside of the main body 231 in the first direction. The limiting end 232 is arranged at the other end of the main body 231 and is spaced apart from the side of the second slider 22 away from the first slider 21; wherein, after the inlay pin 12 is separated from the accommodating hole 211, it abuts against the side of the second slider 22 away from the first slider 21. With such arrangement, during the mold opening process, the movable template 1 moves along the first direction and drives the second slider 22 to move in the direction away from the first slider 21. Since there is a certain gap between the limiting end 232 and the side of the second slider 22 away from the first slider 21, the first slider 21 will not drive the first slider 21 to move along the first direction until the limiting end 232 abuts against the side of the second slider 22 away from the first slider 21, and the second slider 22 cannot continue to move away from the first slider 21. At this time, the inlay pin 12 is disengaged from the accommodating hole 211 on the first slider 21. When the second slider 22 continues to move, the first slider 21 will drive the first slider 21 to move along the second direction until it is separated from the product 200 under the connection between the limiting end 232 and the main body 231. The first slider 21 will not collide with the inlay pin 12 until the demolding is completed.

[0044] The form of the limiting member 23 is not limited to this. In another embodiment, the limiting member 23 can be set in the form of a telescopic rod, which connects the first slider 21 and the second slider 22, so that the second slider 22 will not drive the first slider 21 to move in the initial stroke, and will not drive the first slider 21 to move until the telescopic rod is extended to the limit, which can also achieve the same effect; of course, this form of the telescopic rod relies on the clamping of two sleeves, and is prone to deformation and other problems during long-term use.

[0045] In order to ensure that the first slider 21 does not move before the inlay pin 12 is completely disengaged from the accommodating hole 211, the distance between the limiting end 232 and the second slider 22 needs to be greater than or equal to the depth of the inlay pin 12 inserted into the accommodating hole 211. When the distance between the limiting end 232 and the second slider 22 is greater than the depth of the inlay pin 12 inserted into the accommodating hole 211, it means that after the inlay pin 12 is completely disengaged from the accommodating hole 211, the second slider 22 has an idle stroke, that is, in this stroke, the inlay pin 12 is disengaged from the accommodating hole 211 and the second slider 22 has not yet abutted against the limiting end 232, resulting in the first slider 21 not sliding along, which will lead to low efficiency of the overall demolding. Therefore, in the embodiment of the present invention, the distance between the limiting end 232 and the second slider 22 is equal to the depth of the inserting pin 12 inserted into the accommodating hole 211; such a configuration allows the limiting end 232 to be in contact with the second slider 22 when the inserting pin 12 is disengaged from the accommodating hole 211, so that in the next stroke of the second slider 22, the first slider 21 will be driven to move without any useless stroke, thereby improving the demolding efficiency.

[0046] In order to save the space occupied by the entire limiting member 23, in this embodiment, please refer to Figure 5 The second slider 22 is provided with a receiving groove 221 on a side thereof in the second direction away from the first slider 21. The limiting end portion 232 is located within the receiving groove 221 and is spaced apart from the sidewall of the receiving groove 221 in the second direction. This arrangement prevents the limiting member 23 from protruding beyond the outside of the second slider 22, making the overall structure more compact.

[0047] There are various ways to form the limiting member 23. In this embodiment, the limiting member 23 includes a limiting screw, the screw rod of which constitutes the main body 231, and the head of which constitutes the limiting end 232. The limiting screw is a standard component. When designing the movable mold structure 100, it is only necessary to select a suitable screw, open a corresponding through hole on the second slider 22 for the limiting screw to pass through, and open a corresponding screw hole on the first slider 21 to quickly secure the limiting screw to the first slider 21. In another embodiment, a similar structure can be additionally manufactured and then passed through the second slider 22 and secured to the first slider 21 by welding or other means. However, in this process, although there is a certain gap between the limiting end 232 and the second slider 22, that is, after passing through the second slider 22, the gap between the first slider 21 and the second slider 22 available for welding is reduced, making it inconvenient to secure. However, with the limiting screw form, there is no need to consider the gap available for operation between the first slider 21 and the second slider 22, and the securing can be very convenient.

[0048] As can be seen from the above, when the inserting pin 12 is not completely separated from the accommodating hole 211, the first slider 21 needs to remain stationary to avoid collision with the inserting pin 12. Although the setting of the limiting member 23 allows relative movement between the first slider 21 and the second slider 22, in actual use, the vibration of the driving element and the friction between the second slider 22 and the limiting member 23 may cause the first slider 21 to be driven to move prematurely. In order to ensure that the first slider 21 can maintain a stable state in the early stage of mold opening, in this embodiment, please refer to Figure 3 and Figure 4 The slider assembly 2 also includes a reset member 24 arranged between the first slider 21 and the second slider 22, and the reset member 24 is used to provide the first slider 21 with a driving force to move along the second direction toward the direction away from the first slider 21; in this way, through the driving force of the reset member 24, the possibility of the first slider 21 moving when the insert pin 12 has not yet disengaged from the accommodating hole 211 is reduced, so that the first slider 21 can be stably maintained in the position when the mold is closed, reducing the possibility of interference.

[0049] The reset member 24 can take various forms, including an elastic member or a magnetic structure where like charges repel each other. In this embodiment, the reset member 24 comprises an elastic member, whose ends in the second direction connect the first slider 21 and the second slider 22, respectively, and are retractable in the second direction. Thus, during the initial mold opening, due to the elastic force of the elastic member, the first slider 21 remains stable while the second slider 22 moves, until the inlay pin 12 disengages from the receiving hole 211. The stopper 23 restricts the second slider 22 from moving away from the first slider 21, causing the second slider 22 to drive the first slider 21 with it until demolding is complete.

[0050] There are many forms of the transmission assembly 3. In this embodiment, please refer to Figure 6 The transmission assembly 3 includes a guide post 31 disposed on the movable platen 1 and a guide hole 32 disposed on the second slider 22. The guide post 31 is inclined in a direction away from the mold cavity 11, and the sidewall of the guide hole 32 is correspondingly inclined. Thus, when the movable platen 1 moves in a first direction, the guide post 31 moves along with it. Due to the inclination of the guide post 31, it compresses against the inclined sidewall of the guide hole 32, changing the direction of the force and causing the second slider 22 to move in a second direction. In another embodiment, the transmission assembly 3 can also be in the form of a connecting rod and a hinge seat, with the ends of the connecting rod hinged to the movable platen 1 and the second slider 22, respectively. This can also drive the movement of the second slider 22 through the movement of the movable platen 1. Of course, this hinged connecting rod arrangement occupies more space throughout the entire travel range because its angle changes when the movable platen 1 moves, which can bring difficulties to the design of the injection mold. Therefore, the guide post 31 and guide hole 32 are preferably used.

[0051] The present invention also proposes an injection mold, which includes a movable mold structure 100. The specific structure of the movable mold structure 100 refers to the above embodiment. Since this injection mold adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0052] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A movable mold structure for an injection mold, characterized in that: include: A movable platen, one side of which in the first direction is provided with a cavity and is provided with an insert pin; A slider assembly is provided on a side of the movable plate where the mold cavity is provided, and is movable relative to the movable plate in a second direction. The slider assembly includes a first slider, a second slider, and a limiting member provided between the first slider and the second slider. The first slider is used to enclose the mold cavity to form a molding cavity. A receiving hole for inserting the inlay pin is provided on a side of the first slider facing the movable plate. The second slider is movable relative to the first slider in the second direction. The limiting member is used to limit the second slider from moving in a direction away from the first slider after the inlay pin is separated from the receiving hole, so that the second slider drives the first slider to move together. And, The transmission assembly is transmission-connected to the movable plate and the second sliding block, and is used to drive the second sliding block to move along the second direction when the movable plate moves along the first direction.

2. The movable mold structure according to claim 1, characterized in that: The second sliding block is located on one side of the first sliding block in the second direction.

3. The movable mold structure according to claim 2, characterized in that: The limiting member includes: a main body extending along the second direction, with one end connected to the first slider and the other end passing through the second slider; and a limiting end portion, at least a portion of which protrudes outward from the main body portion in the first direction, the limiting end portion being disposed at the other end of the main body portion and spaced apart from a side of the second slider away from the first slider; After the insert pin is separated from the receiving hole, the insert pin abuts against a side of the second slider away from the first slider.

4. The movable mold structure according to claim 3, characterized in that: The distance between the limiting end and the second sliding block is equal to the depth of the inserting pin inserted into the accommodating hole.

5. The movable mold structure according to claim 3, wherein: The second slider is provided with a receiving groove on a side away from the first slider in the second direction; The limiting end portion is located in the accommodating groove and is spaced apart from a side wall of the accommodating groove in the second direction.

6. The movable mold structure according to claim 3, wherein: The limiting member includes a limiting screw, the screw rod of the limiting screw constitutes the main body, and the head of the limiting screw constitutes the limiting end portion.

7. The movable mold structure according to claim 1, wherein: The slider assembly further includes a reset member disposed between the first slider and the second slider, the reset member being configured to provide the first slider with a driving force to move in a second direction away from the first slider.

8. The movable mold structure according to claim 7, wherein: The reset member includes an elastic member. Two ends of the elastic member in the second direction are respectively connected to the first slider and the second slider, and can be extended and retracted in the second direction.

9. The movable mold structure according to claim 1, wherein: The transmission assembly includes a guide column arranged on the movable plate and a guide hole arranged on the second sliding block. The guide column is inclined in a direction away from the cavity, and the side wall of the guide hole is correspondingly inclined.

10. An injection mold, characterized in that: The movable mold structure comprises the movable mold structure according to any one of claims 1 to 9.

Images