CN220146573U - Floating demolding structure and injection mold with same - Google Patents

Abstract

The utility model discloses a floating demolding structure and an injection mold with the same; the floating demolding structure comprises an upper mold, a lower mold, a sliding insert and a molding module; the sliding insert is used for forming a lateral area of the square hole along the shrinking direction, and is arranged on the upper die and in driving fit with the lower die; the shaping module is used for shaping square hole, and shaping module installs in the lower mould and carries out drive cooperation with last mould. The injection mold comprises the floating demolding structure. The utility model has the beneficial effects that: when the upper die and the lower die are separated, the sliding insert is used for demolding movement away from the forming die set, so that a floating space can be provided for floating of the forming die set, and the forming quality of the square hole can be improved. And the forming module performs separation and demolding after the forming module completes shrinkage along with the square hole through step action, so that the forming quality of the square hole can be further improved.

Description

Floating demolding structure and injection mold with same

Technical Field

The utility model relates to the technical field of dies, in particular to a floating demolding structure and a die with the same.

Background

As shown in fig. 1, in the structure of a tub 100 of a conventional washing machine, the depth of a cavity of the tub 100 is generally more than 500 mm; meanwhile, the thickness of the tub 100 is thin, typically 3-5mm. Therefore, when the tub 100 is demolded, the tub 100 is shrunk, and the shrinkage is generally 1.5%, that is, the shrinkage height of the tub 100 with a cavity depth of 500mm is about 7.5 mm. As shown in fig. 2, an enlarged partial view of the sidewall of the opening of the tub 100 is shown. The tub 100 is provided with a plurality of square holes 110 at the side wall of the opening, and when the tub 100 is shrunk, the relative positions of the square holes 110 are changed; since the square hole 110 is located at the opening position, the displacement amount of the square hole 110 is substantially equal to the maximum shrink height of the tub 100. Therefore, when the tub 100 is opened, the floating structure is required to compensate for the demolding of the square hole 110.

The prior art publication No. CN114932658A, entitled injection mold for high drop product, discloses a scheme for floating demolding square hole 110; however, the above scheme has the following drawbacks during use:

(1) As can be seen from the above-mentioned scheme, the second insert is driven by the oblique guide post to move horizontally in the process of keeping the same height as the square hole 110 to float; this results in the end of the second insert continuously pressing against the underside of the square hole 110 at different horizontal positions, which may result in the underside of the square hole 110 being serrated or beveled after demolding, affecting the quality of the square hole 110.

(2) As can be seen from the above-mentioned scheme, the second insert can include a constant height during the process of opening the mold, but it is desired to compensate for the position change of the square hole 110 due to shrinkage by moving upwards, and the second insert needs to extend upwards into the movable mold; in the above-mentioned scheme, the upward movement of the second insert will be interfered by the first insert, so that the upward movement of the second insert, although being able to be performed, may not be enough for the change of the shrinkage position of the square hole 110.

Disclosure of Invention

It is an object of the present utility model to provide a floating stripper structure that overcomes at least one of the above-mentioned drawbacks of the prior art.

Another object of the present utility model is to provide an injection mold that can solve at least one of the above-mentioned drawbacks of the related art.

In order to achieve at least one of the above objects, the present utility model adopts the following technical scheme: a floating demoulding structure comprises an upper mould, a lower mould, a sliding insert and a forming module; the sliding insert is used for forming a lateral area of the square hole along the shrinking direction, and is arranged on the upper die and in driving fit with the lower die; the molding module comprises a sliding block and a floating insert; the sliding block is slidably arranged on the lower die and is in driving fit with the upper die; the floating insert is vertically and elastically installed on the sliding block in a sliding manner and is suitable for propping against the sliding insert to be used for forming a square hole; when the upper die and the lower die are subjected to up-down separation and demolding, the sliding insert is driven by the lower die to move away from the forming die set along the shrinkage direction; simultaneously, the floating insert synchronously moves along the shrinkage direction along with the square hole under the action of elasticity, and after the upper die and the lower die are separated by a set distance, the sliding block drives the floating insert to move along the opening direction of the square hole under the driving of the upper die.

Preferably, a mounting cavity corresponding to the molding module is arranged at the bottom of the upper die, and the sliding insert is slidably mounted in the mounting cavity and matched with the lower die through a limiting structure; when the upper die and the lower die are in contact, the sliding insert is propped against the forming die set through the limiting structure; when the upper die and the lower die are separated, the limiting structure is suitable for driving the sliding insert to perform demolding movement along the direction away from the forming die set, so that a floating space can be provided for floating of the forming die set.

Preferably, the sliding insert is obliquely and slidably mounted in the mounting cavity; the limiting structure comprises a second inclined guide post arranged on the lower die and a second inclined guide slot arranged at the bottom end of the sliding insert; an included angle exists between the inclined direction of the second inclined guide post and the inclined direction of the sliding insert; when the upper die and the lower die are separated, the relative positions of the second inclined guide post and the second inclined guide groove in the vertical direction change so as to drive the sliding insert to perform inclined sliding demoulding in the direction away from the forming die set.

Preferably, the sliding insert is elastically and slidably mounted in the mounting cavity through an elastic piece; the elastic force of the elastic piece is suitable for driving the sliding insert to generate a movement trend away from the forming module; when the sliding insert abuts against the forming module, the elastic piece is in a deformation state; after the second inclined guide post is separated from the second inclined guide post, the sliding insert keeps the positions of the second inclined guide post and the second inclined guide post corresponding to each other under the action of the elastic piece.

Preferably, a limiting block is arranged in the mounting cavity; when the second inclined guide post is separated from the second inclined guide groove, the sliding insert abuts against the limiting block under the elasticity of the elastic piece.

Preferably, the size of the opening at the lower end of the second inclined guide groove is larger than that of the second inclined guide column; when the second inclined guide post is separated from the second inclined guide groove, the elastic piece is in a natural state.

Preferably, a first inclined guide post is arranged on the upper die, and a first inclined guide slot is arranged on the sliding block; the first inclined guide post and the first inclined guide groove are matched through an intermittent structure, so that the sliding block keeps static in the horizontal direction relative to the first inclined guide post within a set distance for separating the upper die from the lower die; after the upper die and the lower die are separated by a set distance, the sliding block is driven by the first inclined guide post to drive the floating insert to move along the opening direction of the square hole.

Preferably, the first inclined guide groove has a size larger than that of the first inclined guide post, so that the first inclined guide post and the first inclined guide groove cooperate to form the intermittent structure; when the upper die and the lower die are contacted, the first inclined guide pillar is propped against one side of the first inclined guide groove, which is close to the square hole forming position; and in a set distance for separating the upper die from the lower die, the first inclined guide post slides in the first inclined guide groove.

An injection mold comprises the floating demolding structure.

Compared with the prior art, the utility model has the beneficial effects that:

(1) When the upper die and the lower die are contacted, the sliding insert is abutted against the forming die set, so that the stable forming process of the barrel body can be ensured. And when the upper die and the lower die are separated, the sliding insert moves away from the forming die set, so that a floating space can be provided for the forming die set to move along the shrinkage direction along with the square hole synchronously, and further, the forming die set can be prevented from interference in the floating process, so that the forming quality of the square hole is improved.

(2) In the process of separating the upper die from the lower die, the forming die set performs separation and demolding after the forming die set completes shrinkage along with the square hole through step action, so that the forming quality of the square hole can be further improved.

Drawings

Fig. 1 is a schematic view of a conventional tub structure of a washing machine.

Fig. 2 is an enlarged partial schematic view of fig. 1 a according to the present utility model.

FIG. 3 is a schematic view of a part of a mold according to the present utility model.

Fig. 4 is a schematic diagram of the matching state of the molding module when the utility model is molded.

Fig. 5 is an enlarged partial schematic view of the present utility model at B in fig. 4.

Fig. 6 is a schematic view of the slide insert of the present utility model in a mated condition during molding.

Fig. 7 is a schematic diagram showing a matching state of the molding module when demolding is performed according to the present utility model.

Fig. 8 is a schematic view showing the state of engagement of the sliding insert when the present utility model is released.

Fig. 9 is a schematic view showing the mating state of the sliding insert when the demolding is completed according to the present utility model.

Fig. 10 is a schematic diagram of a second mating state of the molding module when demolding is performed according to the present utility model.

FIG. 11 is a schematic diagram showing the mated state of the molding die set when the demolding is completed.

In the figure: barrel 100, square hole 110, upper die 200, first oblique guide pillar 201, mounting cavity 202, lower die 300, second oblique guide pillar 301, molding die set 4, slider 41, first oblique guide groove 410, guide groove 411, floating insert 42, positioning cavity 420, guide block 421, first spring 43, sliding insert 500, second oblique guide groove 501, guide rod 502, and second spring 503.

Detailed Description

The present utility model will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present utility model, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present utility model that the device or element referred to must have a specific azimuth configuration and operation.

It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

One aspect of the present utility model provides a floating stripper structure, as shown in fig. 3 to 11, in which a preferred embodiment includes an upper mold 200, a lower mold 300, a sliding insert 500, and a molding die set 4. The slide insert 500 is used to mold a side region of the square hole 110 in the shrinking direction, and the slide insert 500 is mounted on the upper die 200 and is in driving engagement with the lower die 300. The molding module 4 is used for molding the square hole 110, and the molding module 4 is installed on the lower die 300 and is in driving fit with the upper die 200.

The upper mold 200 and the lower mold 300 may be held in contact against each other while the molding of the tub 100 is performed, so that a cavity for molding the tub 100 may be formed between the upper mold 200 and the lower mold 300. At this time, the molding die set 4 and the sliding insert 500 are also kept against each other to form a part of the cavity, and thus the molding die set 4 and the sliding insert 500 can be matched to mold the square hole 110 and the side area in the shrinking direction.

When the tub 100 is completely formed and the demolding is required, the upper mold 200 and the lower mold 300 are driven by the demolding device to perform the demolding operation of separating vertically. In this process, the sliding insert 500 can be moved away from the molding module 4 in the shrinking direction under the driving of the lower mold 300, so that the sliding insert 500 can provide a floating space for the floating of the molding module 4 while completing the demolding with the tub 100. Meanwhile, the forming module 4 firstly moves synchronously along the shrinkage direction along with the square hole 110 in the floating space under the driving of the upper die 200 until the barrel body 100 completes shrinkage; the molding die set 4 may then continue to move in the opening direction of the square hole 110 under the driving of the upper die 200 to disengage from the square hole 110.

It should be noted that the specific structure and operation principle of the upper mold 200 and the lower mold 300, which are separated by the demolding device when demolding is performed, are well known to those skilled in the art, and thus will not be described in detail herein. The number of the molding modules 4 is plural, and the specific number depends on the number of square holes 110 on the open side of the tub 100. Since the tub 100 may be regarded as four sidewalls, and the ports of each sidewall are provided with square holes 110, the molding modules 4 may be divided into four groups of corresponding numbers. Meanwhile, the number of the sliding inserts 500 corresponds to the number of the molding modules 4; in order to avoid interference between the driving operations of the sliding insert 500 and the molding die set 4, the driving structure of the sliding insert 500 and the corresponding molding die set 4 may be offset.

It will be appreciated that the floating of the forming die set 4 can be regarded as active, i.e. the shrinkage of the tub 100 occurs, and the forming die set 4 moves synchronously with the square hole 110. At this time, only the floating direction of the molding die set 4 is not interfered, so that the sliding insert 500 immediately performs the demolding movement away from the molding die set 4 in the process of separating the upper die 200 from the lower die 300, so as to ensure that the molding die set 4 can smoothly float.

In this embodiment, as shown in fig. 6 to 11, the bottom of the upper die 200 is provided with a mounting cavity 202 corresponding to the molding module 4, and the sliding insert 500 is slidably mounted in the mounting cavity 202 and cooperates with the lower die 300 through a limiting structure. The sliding insert 500 may be held against the molding die set 4 by a limiting structure when the upper and lower molds 200 and 300 are brought into contact for molding of the tub 100. When the upper die 200 and the lower die 300 are separated from each other, the lower die 300 can drive the sliding insert 500 to perform demolding movement along the direction away from the molding die set 4 through the limiting structure in the moving process, so that a floating space can be provided for the floating of the molding die set 4.

It will be appreciated that there are generally two ways in which the sliding insert 500 may be moved to provide a floating space for the molding die set 4; the first is that the sliding insert 500 is vertically moved up; the second is that the sliding insert 500 performs a tilting movement, which can be decomposed into a vertical movement away from the molding die set 4 and a horizontal movement away from the tub 100; the sliding insert 500 can float at a height X of the space when vertically moving in the mounting cavity 202.

For the first moving mode, the mounting cavity 202 needs to be close to the side wall of the cavity, which easily results in the thickness of the side wall of the cavity being thinner, and thus, deformation easily occurs when the forming of the tub 100 is performed, thereby affecting the forming quality of the tub 100. Therefore, in the present embodiment, the second type described above can be preferably used for the moving manner of the sliding insert 500 at the time of demolding; and the value of the height X of the floating space can be determined according to the shrinkage height of the actual product. Taking a product with the height of 500mm as an example, the total shrinkage height is about 7.5 mm; however, in the process of die opening, the product cannot directly reach the maximum shrinkage; generally, the shrinkage of the product in the mold opening process is 10-20% of the total shrinkage. The height X of the floating space takes a value of at least 2mm.

Specifically, as shown in fig. 6 to 11, the sliding insert 500 is mounted in the mounting cavity 202 in a tilting manner, so that when the upper die 200 and the lower die 300 are separated, the sliding insert 500 can be moved in a tilting manner under the driving of the limiting structure so as to be away from the formed tub 100 and the forming die set 4, respectively.

It will be appreciated that there are a variety of ways of tilt mounting for the sliding insert 500, including but not limited to the two types described below.

The first installation mode is as follows: as shown in fig. 6 to 11, a guide rod 502 is fixedly installed in the installation cavity 202 in an inclined manner, and the sliding insert 500 is slidably installed with the guide rod 502. Alternatively, the sliding insert 500 is fixedly mounted with a sloped guide rod 502, and the sliding insert 500 is mounted in a sloped sliding manner with the mounting cavity 202 via the guide rod 502.

And the second installation mode is as follows: as shown in fig. 6 to 11, the top or side of the mounting chamber 202 is provided with a chute extending obliquely, and the sliding insert 500 is slidably connected with the chute by a sliding block provided at the top or side. Alternatively, the top or side of the mounting cavity 202 is provided with a slide block extending obliquely, and the slide insert 500 is slidably connected to the slide block through a slide groove provided at the top or side.

It should be appreciated that both of the above-described modes may satisfy the requirements of the present embodiment, and for convenience of description, the following description will be given by taking the sliding insert 500 as an example, in which the sliding insert is mounted in the mounting cavity 202 in the above-described mounting manner. Of course, in order to ensure the sliding stability of the sliding insert 500, the number of guide rods 502 corresponding to each sliding insert 500 is at least two.

In this embodiment, the specific structure of the limiting structure is various, one of which is shown in fig. 6, 8 and 9, and the limiting structure includes a second inclined guide post 301 disposed on the lower die 300, and a second inclined guide slot 501 disposed at the bottom end of the sliding insert 500. The inclined direction of the second inclined guide post 301 forms an included angle with the inclined direction of the sliding insert 500, so that when the second inclined guide post 301 is matched with the second inclined guide slot 501, the second inclined guide post 301 can generate a driving component force on the sliding insert 500 along the sliding installation direction. So that when the upper die 200 and the lower die 300 are contacted, the lower die 300 can be matched with the second inclined guide post 301 and the second inclined guide groove 501 to drive the sliding insert 500 to move in the direction approaching to the cavity until the sliding insert 500 abuts against and aligns with the molding die set 4. When the upper die 200 and the lower die 300 are separated, the second inclined guide post 301 and the second inclined guide slot 501 can drive the sliding insert 500 to perform inclined sliding demoulding along the direction away from the forming die set 4 through the change of the relative positions in the vertical direction.

It should be noted that, when the demolding is completed, the distances between the upper mold 200 and the lower mold 300 are generally relatively large, and the second diagonal guide post 301 and the second diagonal guide slot 501 are in a completely separated state. In the process of forming the next barrel 100, the upper die 200 and the lower die 300 need to be recombined, and in this process, the second inclined guide post 301 and the second inclined guide slot 501 need to be contacted and matched again to drive the sliding insert 500 to abut against the forming module 4. Therefore, in order to ensure that the above process is performed, it is necessary to maintain the position of the sliding insert 500 unchanged by a positioning structure after the second diagonal guide post 301 and the second diagonal guide slot 501 are separated, so that the second diagonal guide post 301 and the second diagonal guide slot 501 can be smoothly mated again.

In the present embodiment, there are various specific structures for the positioning structure for maintaining the position of the sliding insert 500, including but not limited to the following two.

The first structure: as shown in fig. 6 to 11, the sliding insert 500 is elastically slidably mounted in the mounting cavity 202 by an elastic member, and is connected to the mounting cavity 202 and the sliding insert 500 by two ends of the elastic member, respectively, to form a positioning structure. When the sliding insert 500 is in a propping state with the molding module 4, the elastic member is in a deformation state, and at the moment, the elastic force of the elastic member can drive the sliding insert 500 to generate a movement trend away from the molding module 4. In the process of separating and matching the second inclined guide post 301 and the second inclined guide slot 501, the elastic member is in a deformation reset state, and the sliding insert 500 can move away from the forming module 4 under the cooperation of the elastic force of the elastic member. After the second diagonal guide post 301 is separated from the second diagonal guide post 501, the sliding insert 500 may maintain the positions of the second diagonal guide post 301 and the second diagonal guide post 501 corresponding to each other under the action of the elastic member.

The second structure: a positioning block can be elastically slidably mounted on the top or side of the mounting cavity 202, and a positioning groove is provided at a corresponding position of the sliding insert 500; of course, the positioning block and the positioning groove are arranged. Therefore, when the second oblique guide post 301 and the second oblique guide slot 501 are separated, the sliding insert 500 can just move to the position where the positioning slot is matched with the positioning block, and then the positioning block can be clamped with the positioning slot under the action of elasticity. When the second oblique guide post 301 and the second oblique guide slot 501 are re-mated, the sliding insert 500 can disengage the positioning slot from the positioning block under the driving component force of the second oblique guide post 301.

It will be appreciated that both of the above configurations may meet the needs of the present utility model; for convenience of description of the following, this embodiment will be described by taking the first structure described above as an example. The specific structure of the elastic member is known to those skilled in the art, and the common elastic member includes a spring, a spring sheet, etc., and in this embodiment, a spring is preferably used, and for distinguishing from the following, the spring may be defined as the second spring 503.

Specifically, as shown in fig. 6 to 11, the second spring 503 is mounted in various manners, and it is preferable that the second spring 503 is sleeved on the guide rod 502, and both ends of the second spring 503 are connected to the mounting cavity 202 and the sliding insert 500, respectively. When the upper die 200 and the lower die 300 are abutted against each other, the second spring 503 is in a stretched state; when the upper die 200 and the lower die 300 are separated, the second spring 503 is in a deformed contracted state.

It will be appreciated that there are two conditions in which the second spring 503 positions the sliding insert 500 when the second diagonal guide post 301 and the second diagonal guide slot 501 are separated. First kind: the second spring 503 is in a natural state, that is, the elastic force of the second spring 503 may balance the gravitational component of the sliding insert 500, so that the sliding insert 500 is in a stationary state. However, in order to further ensure the positioning effect of the second spring 503 on the sliding insert 500, the elastic coefficient of the second spring 503 may be set to be larger, so as to further improve the deformation resistance of the second spring 503 in a natural state. Alternatively, as shown in fig. 6, 8 and 9, the size of the lower opening of the second inclined guide groove 501 is designed to be larger than the size of the second inclined guide post 301; thereby providing a certain fault tolerance for the re-mating of the second diagonal guide post 301 and the second diagonal guide slot 501. Second kind: the second spring 503 is still in a stretched state; the installation cavity 202 is internally provided with a limiting block, when the second inclined guide post 301 is separated from the second inclined guide groove 501, the sliding insert 500 abuts against the limiting block under the elasticity of the second spring 503, and therefore the sliding insert 500 can be guaranteed to be in a static state.

In this embodiment, as shown in fig. 4, 7, 10 and 11, the molding die set 4 includes a slider 41 and a floating insert 42. The sliding block 41 is slidably mounted on the lower die 300 and is in driving fit with the upper die 200; the floating insert 42 is vertically elastically slidably mounted to the slider 41 for molding the square hole 110. In the demolding process in which the upper mold 200 and the lower mold 300 are separated from each other, the molding die set 4 sequentially performs the first operation and the second operation. Wherein, the first action: the floating insert 42 maintains a position unchanged in the horizontal direction within a set distance for separating the upper die 200 and the lower die 300; but in the vertical shrinking direction, the floating insert 42 can move synchronously with the square hole 110 under the action of the elastic force until the barrel body 100 completes the preliminary shrinking process. A second action: after the upper die 200 and the lower die 300 are separated by a set distance, the slider 41 drives the floating insert 42 to move along the opening direction of the square hole 110 under the driving of the upper die 200 until the floating insert 42 is completely separated from the square hole 110 in the horizontal direction so as to complete the demolding of the square hole 110.

It should be noted that at the moment of die opening, cold air rapidly enters the die cavity; the product will shrink rapidly due to the momentary decrease in temperature. Therefore, the opening speeds of the upper mold 200 and the lower mold 300 need to match the shrinkage speed of the tub 100. In general, the time for complete shrinkage of plastic products is more than 6 hours, but the stage with the most severe shrinkage is in the mold opening stage, and the shrinkage of the stage accounts for 10-20% of the total shrinkage. That is, during the first action, the tub 100 will quickly shrink and drive the floating insert 42 to float synchronously. At the end of the first operation, the shrinkage of the tub 100 continues, but the shrinkage speed is low, so that the influence of the floating insert 42 on the square hole 110 in the shrinkage direction is small and negligible during the second operation.

Specifically, as shown in fig. 5, the mounting position of the slider 41 is located on the side of the floating insert 42 away from the cavity; the slide block 41 is provided with a vertical guide slot 411, and the floating insert 42 is in sliding fit with the guide slot 411 through a vertically arranged guide block 421. Meanwhile, a first spring 43 is further installed between the guide block 421 and the guide slot 411, so that an elastic sliding installation in a vertical direction is formed between the floating insert 42 and the slider 41; the floating insert 42 floats with the square hole 110 under the elastic force of the first spring 43 in the process of separating the upper and lower molds 200 and 300.

More specifically, as shown in fig. 5, a corresponding positioning cavity 420 is provided between the guide block 421 and the guide slot 411, and the first spring 43 is installed in the positioning cavity 420; one end of the first spring 43 is connected with a guide block 421 at the upper end of the positioning chamber 420, and the other end is connected with a slider 41 at the lower end of the positioning chamber 420. The stability of the first spring 43 in the deformation process can be ensured through the positioning cavity 420, and meanwhile, the installation of the first spring 43 can be facilitated.

It should be appreciated that the first action is performed by simply ensuring that the floating insert 42 remains stationary in the horizontal direction. The slider 41 may be in a stationary state or an operating state. In this embodiment, the slide 41 is preferably also in a stationary state, so that the difficulty in designing the mold can be reduced.

In this embodiment, as shown in fig. 4, 7, 10 and 11, the upper die 200 is provided with a first inclined guide pillar 201, and the slider 41 is provided with a first inclined guide groove 410; the first diagonal guide post 201 and the first diagonal guide slot 410 are engaged by an intermittent structure. Thus, during the first operation, the slide 41 is kept stationary in the horizontal direction with respect to the first diagonal member 201 within a set distance for separating the upper die 200 from the lower die 300. When the second action is performed, after the upper die 200 and the lower die 300 are separated by a set distance, the slider 41 is driven by the first oblique guide pillar 201 to drive the floating insert 42 to move along the opening direction of the square hole 110.

Specifically, there are various specific structures capable of realizing the intermittent structure in which the slider 41 is in the stationary state in the first action, and one of them is that, as shown in fig. 4, 7, 10 and 11, the size of the first diagonal guiding groove 410 is larger than that of the first diagonal guiding groove 201, so that the first diagonal guiding groove 201 and the first diagonal guiding groove 410 cooperate to form the intermittent structure. When the upper die 200 and the lower die 300 are contacted, the first inclined guide pillar 201 is propped against one side of the first inclined guide groove 410, which is close to the forming position of the square hole 110; the first inclined guide pillar 201 can slide in the first inclined guide groove 410 along the horizontal direction by the relative position change between the upper die 200 and the lower die 300 within the set distance of the upper die 200 and the lower die 300, and then the first inclined guide pillar 201 and the first inclined guide groove 410 are not contacted to ensure that the sliding block 41 is in a static state. After the upper die 200 and the lower die 300 are separated by a set distance, the first inclined guide pillar 201 and one side of the first inclined guide groove 410, which is far away from the floating insert 42, are propped against each other, so that the sliding block 41 is driven, and the floating insert 42 is driven to horizontally move in a direction far away from the square hole 110.

It should be noted that, in the first action, the set distance for separating the upper die 200 and the lower die 300 may be calculated according to the difference between the distances between the first diagonal guiding pillar 201 and the first diagonal guiding groove 410 in the horizontal direction, and the inclination angle between the first diagonal guiding groove 410 and the first diagonal guiding pillar 201.

For ease of understanding, the specific operation of the molding die set 4 will be described in detail below.

When the upper die 200 and the lower die 300 are brought into contact with each other, as shown in fig. 4, the first diagonal guide pillar 201 abuts against a side of the first diagonal guide groove 410 near the floating insert 42, thereby enabling the floating insert 42 to abut against the sliding insert 500 for forming the square hole 110.

When the first operation is performed, the upper die 200 and the lower die 300 are separated from each other up and down as shown in fig. 7. In this process, the sliding insert 500 moves obliquely upwards to avoid the floating space, and thus the floating insert 42 can float vertically upwards along with the square hole 110 under the elastic force of the first spring 43. In this process, the first diagonal member 201 moves away from the floating insert 42 relative to the first diagonal guide slot 410 until the first diagonal member 201 contacts a side of the first diagonal guide slot 410 that is away from the floating insert 42.

When the second action is performed, as shown in fig. 10, as the upper die 200 and the lower die 300 continue to separate, the first inclined guide pillar 201 will abut against the first inclined guide groove 410, so as to drive the sliding block 41 to move horizontally in a direction away from the square hole 110, and the floating insert 42 will move synchronously with the sliding block 41 through the connection of the guide block 421 and the guide groove 411 until the floating insert 42 is separated from the square hole 110 in the horizontal direction.

After the second action is completed, as shown in fig. 11, as the upper and lower molds 200 and 300 continue to be separated, the first diagonal guide post 201 and the first diagonal guide slot 410 will be separated, and at this time, the floating insert 42 will be in a floating state with the force of the first spring 43 balanced and move vertically in synchronization with the lower mold 300.

When the upper die 200 and the lower die 300 are in re-contact die assembly, the first inclined guide pillar 201 is in contact with the first inclined guide groove 410 again and is matched with the first inclined guide groove to drive the sliding block 41 to drive the floating insert 42 to horizontally move towards the direction of the die cavity; at the same time, the floating insert 42 will undergo a vertical downward movement compressing the first spring 43 under compression by the sliding insert 500 until the floating insert 42 is in the molding position.

Another aspect of the present utility model provides an injection mold, as shown in fig. 3, wherein a preferred embodiment includes the floating stripper structure described above.

The foregoing has outlined the basic principles, features, and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (9)

1. A floating demoulding structure comprises an upper mould and a lower mould; characterized by further comprising:

a sliding insert; the sliding insert is used for forming a lateral area of the square hole along the shrinking direction, and is arranged on the upper die and in driving fit with the lower die; and

a molding module; the molding module includes:

a slide block; the sliding block is slidably arranged on the lower die and is in driving fit with the upper die; and

a floating insert; the floating insert is vertically and elastically installed on the sliding block in a sliding manner and is suitable for propping against the sliding insert to be used for forming a square hole;

when the upper die and the lower die are subjected to up-down separation and demolding, the sliding insert is driven by the lower die to move away from the forming die set along the shrinkage direction; simultaneously, the floating insert synchronously moves along the shrinkage direction along with the square hole under the action of elasticity, and after the upper die and the lower die are separated by a set distance, the sliding block drives the floating insert to move along the opening direction of the square hole under the driving of the upper die.

2. The floating stripper structure of claim 1, wherein: the bottom of the upper die is provided with a mounting cavity corresponding to the forming die set, and the sliding insert is slidably mounted in the mounting cavity and matched with the lower die through a limiting structure;

when the upper die and the lower die are in contact, the sliding insert is propped against the forming die set through the limiting structure;

when the upper die and the lower die are separated, the limiting structure is suitable for driving the sliding insert to perform demolding movement in a direction away from the molding die set.

3. The floating stripper structure of claim 2, wherein: the sliding insert is obliquely and slidably arranged in the mounting cavity; the limiting structure comprises a second inclined guide post arranged on the lower die and a second inclined guide slot arranged at the bottom end of the sliding insert; an included angle exists between the inclined direction of the second inclined guide post and the inclined direction of the sliding insert;

when the upper die and the lower die are separated, the relative positions of the second inclined guide post and the second inclined guide groove in the vertical direction change so as to drive the sliding insert to perform inclined sliding demoulding in the direction away from the forming die set.

4. A floating stripper structure as defined in claim 3, wherein: the sliding insert is elastically and slidably arranged in the mounting cavity through an elastic piece, and the elastic force of the elastic piece is suitable for driving the sliding insert to generate a movement trend away from the forming module;

when the sliding insert abuts against the forming module, the elastic piece is in a deformation state;

after the second inclined guide post is separated from the second inclined guide post, the sliding insert keeps the positions of the second inclined guide post and the second inclined guide post corresponding to each other under the action of the elastic piece.

5. The floating stripper structure of claim 4, wherein: a limiting block is arranged in the mounting cavity; when the second inclined guide post is separated from the second inclined guide groove, the sliding insert abuts against the limiting block under the elasticity of the elastic piece.

6. The floating stripper structure of claim 4, wherein: the size of the opening at the lower end of the second inclined guide groove is larger than that of the second inclined guide column; when the second inclined guide post is separated from the second inclined guide groove, the elastic piece is in a natural state.

7. The floating stripper structure of claim 1, wherein: the upper die is provided with a first inclined guide post, and the sliding block is provided with a first inclined guide groove; the first inclined guide post is matched with the first inclined guide groove through an intermittent structure;

the sliding block keeps static in the horizontal direction relative to the first inclined guide post through the intermittent structure within a set distance for separating the upper die from the lower die;

after the upper die and the lower die are separated by a set distance, the sliding block is driven by the first inclined guide post to drive the floating insert to move along the opening direction of the square hole.

8. The floating stripper structure of claim 7, wherein: the first inclined guide groove is larger than the first inclined guide column in size, so that the first inclined guide post and the first inclined guide groove are matched to form the intermittent structure;

when the upper die and the lower die are contacted, the first inclined guide pillar is propped against one side of the first inclined guide groove, which is close to the square hole forming position;

and in a set distance for separating the upper die from the lower die, the first inclined guide post slides in the first inclined guide groove.

9. An injection mold, characterized in that: comprising a floating demolding structure as claimed in any one of claims 1 to 8.