CN217803084U - Resetting device and injection molding device - Google Patents

Abstract

The disclosure relates to a resetting means for the thimble board of the device of moulding plastics resets, includes: a first sleeve; the pushing end of the push rod is inserted into the first sleeve; the second sleeve and the push rod are respectively positioned on two opposite sides of the first sleeve, and the side wall of the second sleeve is provided with at least two openings; and a slider slidably disposed within each opening, the slider configured to slide between a first position and a second position relative to the opening; when the sliding block is located at the first position, the sliding block abuts against the pushing end of the push rod, and the push rod drives the second sleeve to move through the sliding block; when the sliding block is located at the second position, the sliding block is separated from the push rod. Through the cooperation structure of first sleeve, push rod, second sleeve and slider for the mould can drive resetting means and thimble board and reach the effect of protection thimble and messenger's thimble drawing of patterns.

Description

Resetting device and injection molding device

Technical Field

The disclosure relates to the field of injection molds, in particular to a resetting device and an injection molding device.

Background

With the development of industrial technology, an injection molding process for injecting hot-melt raw materials into a mold through an injection molding machine to form a molded product has become an important method for producing industrial molded products, wherein a demolding process for separating a cooled injection molded product from the injection mold is an important process link, in order to achieve a good demolding effect, an ejector plate for ejecting the mold is installed on the mold and is connected to an external power mechanism through an ejector rod and a fixing screw, the ejector plate can reset when the mold is closed under the driving of the power mechanism, and the ejector pin is prevented from being damaged due to the fact that a component in the mold impacts the ejector pin when the mold is closed.

However, an injection molding product is required to be changed according to production requirements in an injection molding process production line, an injection mold is required to be changed when the injection molding product is changed, for the injection molding process requiring frequent replacement of the mold, the ejector plate is connected with an external power structure through a fixing screw, so that the detachment work of the fixing screw of an old mold and the installation work of the fixing screw of a new mold are required to be carried out when the mold is replaced every time, the mold is required to be replaced every time, the injection molding machine is in an idle state during mold replacement, the use efficiency of the injection molding machine is reduced, and production personnel are required to enter the mold for operation when the fixing screw is detached and installed, so that the safety risk of the production personnel is increased.

SUMMERY OF THE UTILITY MODEL

To overcome the problems in the related art, the present disclosure provides a reset device and an injection molding device.

According to a first aspect of the embodiments of the present disclosure, there is provided a resetting device for resetting an ejector plate of an injection molding device, including: a first sleeve; the pushing end of the push rod is inserted into the first sleeve; the second sleeve and the push rod are respectively positioned on two opposite sides of the first sleeve, the second sleeve is inserted into the first sleeve and is in sliding connection with the first sleeve, the second sleeve is used for inserting a pushing end of the first sleeve, at least two openings are formed in the side wall of the second sleeve, and the at least two openings are oppositely arranged along the radial direction of the second sleeve; the sliding blocks are slidably arranged in the openings and are configured to slide between a first position and a second position relative to the openings, when the sliding blocks are located at the first position, the sliding blocks are abutted against the pushing ends of the push rods, and the push rods drive the second sleeve to move through the sliding blocks; when the sliding block is located at the second position, the sliding block is separated from the push rod.

In one embodiment, the first inner wall surface of the first sleeve is provided with a containing groove; when the first position is reached, at least part of the sliding block protrudes out of the second inner wall surface of the second sleeve; when the sliding block is at the second position, at least part of the sliding block protrudes out of the second outer wall surface of the second sleeve and is contained in the containing groove; the sliding block is provided with a first matching surface, the pushing end of the push rod is provided with a second matching surface matched with the first matching surface, and when the sliding block is located at the first position and the pushing end of the push rod is abutted against the sliding block, the first matching surface is abutted against the second matching surface; when the sliding block moves from the first position to the second position, the first matching surface and the second matching surface slide relatively and are separated from each other.

In one embodiment, the first sleeve has a first end and a second end, the first end being located on a side of the first sleeve adjacent to the pushrod, the second end being located on a side of the first sleeve adjacent to the second sleeve; the second sleeve has a third end that is closer to the second end than the first end; the inner diameter of the second end of the first sleeve is larger than the outer diameter of the third end of the second sleeve, and the difference between the inner diameter of the second end of the first sleeve and the outer diameter of the third end of the second sleeve is smaller than the size value of the sliding block in the radial direction of the second sleeve.

In one embodiment, the sliding block is provided with a third matching surface, and the accommodating groove is provided with a fourth matching surface matched with the third matching surface, wherein when the sliding block moves from the first position to the second position, the third matching surface and the fourth matching surface slide relatively and are separated from each other; when the sliding block moves from the second position to the first position, the third matching surface and the fourth matching surface slide relatively and are abutted.

In one embodiment, the sliding block includes a first contact surface facing the second sleeve along a radial direction of the second sleeve and a second contact surface connected to the first contact surface and located in a circumferential direction of the second sleeve, wherein when the sliding block is located at the first position, the sliding block is limited from moving in a direction approaching the first sleeve along the radial direction of the second sleeve by the second contact surface abutting against the openings of the second sleeve; when the sliding block is located at the second position, the first contact surface abuts against the first inner wall surface of the first sleeve, and the sliding block is limited to move along the radial direction of the second sleeve in the direction away from the first sleeve.

In one embodiment, the number of the sliding blocks is multiple, and the openings and the sliding blocks are uniformly arranged along the circumferential direction of the second sleeve.

According to a second aspect of the embodiments of the present disclosure, there is provided an injection molding apparatus comprising: a front mold; a back mold; an ejector plate; the resetting device of any one of the first aspect, wherein the push rod is arranged on the front mold, the first sleeve is arranged on the rear mold, the second sleeve is provided with a third end and a fourth end which are opposite, the third end is connected with the first sleeve in a sliding mode, and the fourth end is fixed on the ejector plate.

In one embodiment, the ejector plate comprises a first plate and a second plate fixed in a stack, a first face of the first plate being opposite to a second face of the second plate; a fourth end of the second sleeve is provided with a positioning structure; the first surface of the second plate is provided with a positioning groove corresponding to the positioning structure, wherein the positioning structure is arranged between the first surface of the first plate and the second surface of the second plate and is arranged in the positioning groove.

In one embodiment, the ejector plate is in a retracted position when the injection molding apparatus is in a mold closed state; when the injection molding device is in a demolding state, the ejector plate is located at a demolding position; when the push rod moves towards the direction close to the pushing end of the push rod, the push rod pushes the ejector plate to move towards the contraction position through the sliding block and the second sleeve; when the ejector plate moves towards the demolding position, the ejector plate pushes the second sleeve to move towards the direction close to the third end of the second sleeve.

In one embodiment, the injection molding device is provided with a plurality of resetting devices, and the resetting devices are parallel to each other and perpendicular to the ejector plate.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: through the cooperation structure of first sleeve, push rod, second sleeve and slider for the mould can directly drive resetting means and the thimble board that sets up on injection moulding device and reach the effect of protection thimble and messenger's thimble drawing of patterns at the compound die and the motion of drawing of patterns in-process, and directly set up resetting means on injection moulding device, need not to dismantle resetting means again, has accelerated retooling time by a wide margin, has reduced retooling workman's safety risk.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic diagram illustrating a reset device according to an exemplary embodiment.

Fig. 2 is a schematic cross-sectional structure diagram illustrating a resetting device according to an exemplary embodiment.

FIG. 3 is a schematic diagram illustrating a slider, according to an exemplary embodiment.

FIG. 4 is a schematic top view of a slider and a second sleeve shown in accordance with an exemplary embodiment.

FIG. 5 is a schematic diagram of a top view of a slider shown in a first position in accordance with an exemplary embodiment.

FIG. 6 is a schematic diagram of a top view of a slider shown in a second position in accordance with an exemplary embodiment.

FIG. 7 is a cross-sectional structural view of an injection molding apparatus according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure as detailed in the claims.

In the related art, in order to prevent damage to the ejector pins caused by the movable part of the mold striking the ejector pins during the mold closing process of the injection mold, the ejector plate of the mold needs to be able to drive the ejector pins to be separated from the core surface of the mold during the mold closing process of the injection mold. At present, an ejector plate and one end of an ejector rod are mainly matched with a fixing screw for fixing, the other end of the ejector rod is fixed with an injection molding machine cross plate through the fixing screw, the injection molding machine cross plate is connected with a power mechanism, and the power mechanism can drive the ejector plate to move through the ejector rod, so that the ejector plate can move to the position where an ejector pin is ejected and the position where the ejector pin is retracted.

However, the injection molding process production line often needs to change the injection molding products according to production needs, and the changed injection molding products need to change different injection molds, and when the molds are changed, the ejector plate is connected with the external power structure through the fixing screws, so that the dismounting work of the fixing screws of the old mold and the mounting work of the fixing screws of the new mold are required to be carried out every time of mold change, which results in that long time is required to be consumed every time of mold change, and the injection molding machine is in an idle state during mold change, which reduces the use efficiency of the injection molding machine, and the dismounting and mounting of the fixing screws require production personnel to enter the interior of the mold for operation, which increases the safety risk of the production personnel.

In order to solve the above technical problem, a reset device is provided according to an embodiment of the present disclosure.

Fig. 1 is a schematic diagram illustrating a reset apparatus according to an exemplary embodiment. Fig. 2 is a schematic cross-sectional structure diagram illustrating a resetting device according to an exemplary embodiment.

In one embodiment, as shown in fig. 1 and 2, the reset device 10 includes a first sleeve 11, a push rod 12, a second sleeve 13, and a slider 14.

The outer diameter of the push rod 12 is smaller than the inner diameter of the first sleeve 11, the pushing end 120 of the push rod 12 can be inserted into the interior of the first sleeve 11 from the first end 110A of the first sleeve 11, and the push rod 12 can slide in the interior of the first sleeve 11 along the length direction of the first sleeve 11. As shown in fig. 1, the length direction of the first sleeve 11 may be the Y-axis direction shown in fig. 1.

As shown in fig. 2, the outer diameter of the second sleeve 13 may be smaller than the inner diameter of the first sleeve 11. The second sleeve 13 includes opposite third and fourth ends 130A, 130B, the third end 130A being the end proximal to the first sleeve 11 and the fourth end 130B being the end distal to the first sleeve 11. The third end 130A of the second sleeve 13 can enter the interior of the first sleeve 11 from the second end 110B of the first sleeve 11, and the second sleeve 13 can slide along the length direction of the first sleeve 11 (e.g., the Y-axis direction in fig. 2) in the interior of the first sleeve 11.

In one embodiment, the second sleeve 13 and the push rod 12 are located on opposite sides of the first sleeve 11.

The outer diameter of the push rod 12 may be smaller than the inner diameter of the second sleeve 13, the pushing end 120 of the push rod 12 may enter the inside of the second sleeve 13 from the third end 130A of the second sleeve 13, and the push rod 12 may slide in the inside of the second sleeve 13 along the length direction (e.g., the Y-axis direction in fig. 2) of the second sleeve 13.

FIG. 3 is a schematic diagram illustrating a slider, according to an exemplary embodiment. FIG. 4 is a schematic top view of a slider and a second sleeve shown in accordance with an exemplary embodiment. FIG. 5 is a schematic diagram illustrating a top view of a slider in a first position, according to an exemplary embodiment. FIG. 6 is a schematic diagram of a top view of a slider shown in a second position in accordance with an exemplary embodiment.

In one embodiment, as shown in fig. 3 to 6, the sidewall of the second sleeve 13 is provided to include at least two openings, and the at least two openings are oppositely disposed along the radial direction of the second sleeve 13.

In one embodiment, the two openings may be a first opening 131A and a second opening 131B, the first opening 131A and the second opening 131B may be oppositely disposed along a radial direction of the second sleeve 13, and the first opening 131A and the second opening 131B may be formed through the second sleeve 13. The first opening 131A and the second opening 131B may be respectively provided with a slider 14, the slider 14 may slide in the first opening 131A and the second opening 131B with respect to each opening, and the slider 14 may be located at the first position or the second position by the relative sliding of the slider 14.

The first position of the slider 14 is a position close to the axial center of the second sleeve 13 in the radial direction of the second sleeve 13, for example, as shown in fig. 5, and the second position of the slider 14 is a position away from the axial center of the second sleeve 13 in the radial direction of the second sleeve 13, for example, as shown in fig. 6.

In one embodiment, FIG. 5 illustrates the slide 14 in a first position, and FIG. 6 illustrates the slide 14 in a second position. As shown in fig. 5 and 6, when the slider 14 is in the first position, the slider 14 is close to the axial center of the second sleeve 13, and when the slider 14 is in the second position, the slider 14 is away from the axial center of the second sleeve 13.

As shown in fig. 5 and 6, when the sliding block 14 moves to the first position, at least a portion of the sliding block 14 may be located inside the second sleeve 13, and when the pushing end 120 of the pushing rod 12 slides inside the second sleeve 13, the pushing end may abut against the portion of the sliding block 14 located inside the second sleeve 13, so that the pushing rod 12 may push the second sleeve 13 through the sliding block 14 to move along the pushing direction of the pushing rod 12.

When the slide 14 is in the second position, the slide 14 is disengaged from the push rod 12, the push rod 12 can move independently without being influenced by the slide 14, and the second sleeve 13 and the slide 14 can not move along with the push rod 12.

In one embodiment, as shown in FIG. 2, the first sleeve 11 may be divided into two sections according to the size of the inner diameter, the inner diameter of the first section 113 of the first sleeve 11 is smaller than the inner diameter of the second section 114 of the first sleeve 11, and the second section 114 of the first sleeve 11 is closer to the second sleeve 13 than the first section 113. The push rod 12 enters the interior of the first sleeve 11 from the first section 113 of the first sleeve 11. When the push rod 12 pushes the slider 14 and the second sleeve 13, the push rod 12 moves in a direction from the first section 113 of the first sleeve 11 to the second section 114 of the first sleeve 11. The first section 113 of the first sleeve 11 includes the first end 110A of the first sleeve 11 and the second section 114 of the first sleeve 11 includes the second end 110B of the first sleeve 11. The first end 110A of the first sleeve 11 is an end away from the fourth end 130B of the second sleeve 13, and the second end 110B of the first sleeve 11 is an end close to the fourth end 130B of the second sleeve 13.

The first sleeve 11 has a first end 110A and a second end 110B, the first end 110A is located on one side of the first sleeve 11 close to the push rod 12, and the second end 110B is located on one side of the first sleeve 11 close to the second sleeve 13; the second sleeve 13 has a third end 130A, said third end 130A being closer to said second end 110B than to said first end 110A.

In one embodiment, the second section 114 of the first inner wall surface 116 of the first sleeve 11 is provided with a receiving groove 115, when the slider 14 is at the first position, at least a portion of the slider 14 protrudes from the second inner wall surface 133 of the second sleeve 13, and the portion of the slider 14 protruding from the second inner wall surface 133 of the second sleeve 13 is used for abutting against the pushing end 120 of the pushing rod 12;

when the slider 14 is in the second position, at least a portion of the slider 14 protrudes from the second outer wall surface 134 of the second sleeve 13, the protruding portion of the slider 14 is received in the receiving groove 115, and the entire slider 14 is received in the first opening 131A and the second opening 131B and/or the receiving groove 115.

In another embodiment, when the sliding block 14 is in the second position, the sliding block 14 may not protrude from the second outer wall 134 of the second sleeve 13.

In one embodiment, the inner diameter of the first section 113 of the first sleeve 11 is equal to the outer diameter of the second sleeve 13.

In one embodiment, the slide 14 is in the second position when the slide 14 slides with the second sleeve 13 within the first sleeve 11 to the second section 114 of the first sleeve 11.

In one embodiment, as shown in fig. 6, when the slider 14 is in the second position, a portion of the slider 14 may extend from the first opening 131A and the second opening 131B to between the exterior of the second sleeve 13 and the second section 114 of the first sleeve 11, and another portion of the slider 14 may be located within the first opening 131A and the second opening 131B. At this time, the pushing end 120 of the push rod 12 is disengaged from the slider 14, the push rod 12 can move solely within the second sleeve 13 toward the fourth end 130B of the second sleeve 13, and the slider 14 and the second sleeve 13 no longer move with the push rod 12.

In one embodiment, the slider 14 is provided with a first mating surface 141, and the pushing end 120 of the pushing rod 12 is provided with a second mating surface 121 that mates with the first mating surface 141.

In one embodiment, the first mating surface 141 is an inclined surface, and the second mating surface 121 is also an inclined surface.

In one embodiment, the first engagement surface 141 and the second engagement surface 121 have the same inclination angle, which helps to make the relative sliding between the two smoother.

As shown in FIG. 5, when the slide 14 is in the first position, the second engagement surface 121 of the pushing end 120 of the pushing rod 12 can push the first engagement surface 141 of the slide 14, so that the slide 14 moves from the first section 113 of the first sleeve 11 to the second section 114 of the first sleeve 11. When the sliding block 14 moves to the second section 114 of the first sleeve 11, the pushing end 120 of the pushing rod 12 applies a pressure to the first mating surface 141 of the sliding block 14 through the second mating surface 121, the pressure is perpendicular to the surfaces of the first mating surface 141 and the second mating surface 121, the pressure can generate a component force in the transverse direction (X-axis direction) of the first opening 131A and the second opening 131B, and the sliding block 14 slides along the transverse direction of the first opening 131A and the second opening 131B under the action of the component force, so that the sliding block 14 moves from the first position shown in fig. 5 to the second position shown in fig. 6.

In one embodiment, the slider 14 comprises a first contact surface 143 facing the outside of the second sleeve 13 and facing the second sleeve 13 in the radial direction of the second sleeve 13. Specifically, the first contact surface 143 may face the outer direction of the second sleeve 13 in the radial direction of the second sleeve 13, and the first contact surface 143 may face the first inner wall surface 116 of the first sleeve 11 in the radial direction of the second sleeve 13.

In one embodiment, the inner diameter of the second section 114 of the first sleeve 11 is larger than the outer diameter of the second sleeve 13, and the difference between the inner diameter of the second section 114 of the first sleeve 11 and the outer diameter of the second sleeve 13 is smaller than the dimension value of the slider 14 in the radial direction of the second sleeve 13, so that when the slider 14 slides to the second position, at least a part of the slider 14 is located in the first opening 131A and the second opening 131B, and at the same time, the first contact surface 143 of the slider 14 can also abut against the first inner wall surface 116 of the second section 114 of the first sleeve 11, thereby preventing the slider 14 from moving in the radial direction of the second sleeve 13 to approach the first sleeve, and preventing the slider 14 from falling out of the first opening 131A and the second opening 131B to the outside of the second sleeve 13 when the slider 14 slides to the second position.

In one embodiment, the slide 14 is in the first position when the slide 14 slides with the second sleeve 13 within the first sleeve 11 to the first section 113 of the first sleeve 11.

In one embodiment, when the slider 14 is in the first position, all of the slider 14 is located inside the second sleeve 13 and inside the opening 131, and at least a portion of the slider 14 is located inside the second sleeve 13 protruding out of the first opening 131A and the second opening 131B. When the push rod 12 slides inside the second sleeve 13 along the length direction of the second sleeve 13 towards the fourth end 130B of the second sleeve 13, the slider 14 in the first position may contact with the push end 120 of the push rod 12, and the push rod 12 may push the second sleeve 13 to slide inside the first sleeve 11 towards the direction close to the second end 110B of the first sleeve 11 through the slider 14 in the first position.

In one embodiment, the slider 14 is provided with a third mating surface 142, and the inner surface of the first section 113 of the first sleeve 11 where it is connected to the second section 114 of the first sleeve 11 is provided with a fourth mating surface 111 having the same angle as the third mating surface 142.

In one embodiment, the third mating surface 142 is an inclined surface, and the fourth mating surface 111 is also an inclined surface.

In one embodiment, the third engagement surface 142 and the fourth engagement surface 111 are inclined at the same angle, which helps to make the relative sliding movement between the two smoother.

When the sliding block 14 is located at the second position, the second sleeve 13 may drive the sliding block 14 to move toward the direction close to the first end 110A of the first sleeve 11, when the sliding block 14 moves to the connection between the first section 113 of the first sleeve 11 and the second section 114 of the first sleeve 11, the first sleeve 11 applies a pressure to the third mating surface 142 of the sliding block 14 through the fourth mating surface 111, the pressure may generate a component force in the transverse direction (X-axis direction) of the second opening 131B and the first opening 131B of the first opening 131A and the second opening 131B, and the sliding block 14 slides along the transverse direction (X-axis direction) of the second opening 131B and the first opening 131B under the action of the component force, so that the sliding block 14 moves from the second position shown in fig. 6 to the first position shown in fig. 5.

In one embodiment, the slider 14 further includes a second contact surface 144 located at the circumferential direction of the second sleeve 13, wherein the second contact surface 144 is connected with the first contact surface 143, and specifically, the second contact surface 144 may face the side walls of the first opening 131A and the second opening 131B.

When the slider 14 is located at the first position, the second contact surface 144 may abut against the first opening 131A and the second opening 131B of the second sleeve 13, for example, as shown in fig. 5, the second contact surface 144 may abut against the first opening 131A and the second opening 131B to prevent the slider 14 from moving in a direction away from the first sleeve 11 along the radial direction of the second sleeve 13, and prevent the slider 14 from falling off from the first opening 131A and the second opening 131B and falling into the inside of the second sleeve 13.

In one embodiment, the number of the openings 131 and the sliders 14 may be plural, and the number of the openings may be greater than or equal to the number of the sliders 14.

The plurality of openings 131 and the plurality of sliders 14 may be uniformly arranged along the circumferential direction of the second sleeve 13, so that when the push rod 12 pushes the sliders 14, the stress of the second sleeve 13 in each direction is uniform, and the second sleeve 13 is prevented from being worn away from the first sleeve 11 due to uneven stress when pushed by the push rod 12.

Based on the same concept, the embodiment of the present disclosure also provides an injection molding device 20.

FIG. 7 is a cross-sectional structural view of an injection molding apparatus according to an exemplary embodiment.

In one embodiment, as shown in fig. 7, the injection molding apparatus 20 includes a front mold 21, a rear mold 22, an ejector plate 23, and a return apparatus 10.

The push rod 12 of the resetting device 10 is arranged on the front mold 21, the first sleeve 11 of the resetting device 10 is arranged on the rear mold 22, and the second sleeve 13 of the resetting device 10 is fixed on the ejector plate 23.

In one embodiment, the push rod 12 is provided with a push rod fixing block 122, the front mold 21 is provided with a fixing groove 211 corresponding to the push rod fixing block 122, and the push rod fixing block 122 is disposed at the fixing groove 211 of the push rod fixing block 122. The front mold 21 can move the push rod 12 through the push rod fixing block 122.

In one embodiment, the first sleeve 11 is provided with a sleeve fixing block 112, the rear mold 22 is provided with a mounting groove corresponding to the sleeve fixing block 112, and the sleeve fixing block 112 is disposed in the mounting groove of the rear mold 22. The rear mold 22 can move the first sleeve 11 through the sleeve fixing block 112.

In one embodiment, the ejector plate 23 includes a first plate 23A and a second plate 23B, both of which plates 23A and 23B are stacked and fixed.

In one embodiment, the first face 231a of the first plate 23A is a face facing the second plate 23B, the second face 231B of the second plate 23B is a face facing the first plate 23A, and the first face 231a of the first plate 23A is opposite to the second face 231B of the second plate 23B.

In one embodiment, the second sleeve 13 has opposing third and fourth ends 130A, 130B, wherein the third end 130A is slidably coupled to the first sleeve 11. The fourth end 130B of the second sleeve 13 is provided with a positioning structure 132, and the second plate 23B is provided with a positioning slot corresponding to the positioning structure 132.

In one embodiment, the positioning structure 132 is a pendant structure.

In one embodiment, the positioning structure 132 is disposed on the first surface 231a of the first plate 23A, and the positioning slot of the second plate 23B is disposed above the positioning structure 132, such that the positioning structure 132 is located between the first plate 23A and the second plate 23B, and the positioning structure 132 is fixed in the ejector plate 23 by the fixed relationship of the first plate 23A and the second plate 23B.

In other embodiments, the positioning structure 132 may be fixed to the ejector plate 23 by welding or screws.

In one embodiment, when the front mold 21 and the rear mold 22 of the injection molding apparatus 20 are pressurized to close, the injection molding apparatus 20 is in a mold closing state, the front mold 21 and the rear mold 22 of the injection molding apparatus 20 are separated, and when it is required to release the injection molded product from the molds, the injection molding apparatus 20 is in a mold releasing state.

In one embodiment, the ejector plate 23 further includes an ejector pin for ejecting the injection molded article to be demolded.

In one embodiment, when the injection molding apparatus 20 is switched from the mold-release state to the mold-clamping state, the ejector pins are disengaged from the rear mold 22 by the ejector pin plate 23, i.e., the ejector pin plate 23 is in the retracted position. When the injection molding device is switched from a mold closing state to a mold releasing state, the ejector plate 23 drives the ejector pins into the rear mold 22 and pushes the injection molded product, i.e., the ejector plate 23 is in a mold releasing position.

In one embodiment, when the injection molding apparatus 20 is switched from the mold-releasing state to the mold-closing state, the front mold 21 drives the push rod 12 to move, so that the push rod 12 moves toward the second end 110B of the first sleeve 11, and also drives the push rod 12 to push the slide 14 and the second sleeve 13 in the first position, and the second sleeve 13 drives the ejector plate 23 to move toward the retracted position.

In one embodiment, when the injection molding apparatus 20 is switched from the mold clamping state to the mold releasing state, the front mold 21 moves the push rod 12, moves the push rod 12 toward the first end 110A of the first sleeve 11, and disengages the push rod 12 from the second sleeve 13. The ejector plate 23 moves the ejector pins to the ejection position, and also moves the second sleeve 13 to the first end 110A of the first sleeve 11.

In one embodiment, the injection molding apparatus 20 may be provided with a plurality of reset devices 10. A plurality of resetting devices 10 can be parallel to each other, and a plurality of resetting devices 10 can be perpendicular to ejector plate 23, and this can make resetting devices 10 drive ejector plate 23 when moving, makes ejector plate 23 move steadily, promotes ejector plate 23's motion precision.

It is understood that the reset device and the injection molding device provided by the embodiments of the present disclosure include corresponding hardware structures and/or software modules for performing the respective functions in order to realize the functions. The disclosed embodiments can be implemented in hardware or a combination of hardware and computer software, in combination with the exemplary elements and algorithm steps disclosed in the disclosed embodiments. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

It is understood that "a plurality" in this disclosure means two or more, and other words are analogous. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will be further understood that the terms "first," "second," and the like, are used to describe various information and should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

It will be further understood that the terms "central," "longitudinal," "lateral," "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present embodiment and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation.

It is further understood that, unless otherwise specified, "connected" includes direct connections between the two without other elements and indirect connections between the two with other elements.

It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the scope of the appended claims.

Claims (10)

1. The utility model provides a resetting means which characterized in that for the thimble board of the device of moulding plastics resets, includes:

a first sleeve;

the pushing end of the push rod is inserted into the first sleeve;

the second sleeve and the push rod are respectively positioned on two opposite sides of the first sleeve, the second sleeve is inserted into the first sleeve and is in sliding connection with the first sleeve, the second sleeve is used for inserting a pushing end of the first sleeve, at least two openings are formed in the side wall of the second sleeve, and the at least two openings are oppositely arranged along the radial direction of the second sleeve; and

a slider slidably disposed within each opening, the slider configured to slide between a first position and a second position relative to the opening,

when the sliding block is located at the first position, the sliding block abuts against the pushing end of the push rod, and the push rod drives the second sleeve to move through the sliding block; when the sliding block is located at the second position, the sliding block is separated from the push rod.

2. The reduction device according to claim 1, wherein the first sleeve has a first inner wall surface with a receiving groove;

when the first position is reached, at least part of the sliding block protrudes out of the second inner wall surface of the second sleeve;

when the sliding block is at the second position, at least part of the sliding block protrudes out of the second outer wall surface of the second sleeve and is contained in the containing groove;

the sliding block is provided with a first matching surface, the pushing end of the push rod is provided with a second matching surface matched with the first matching surface,

when the sliding block is located at the first position and the pushing end of the push rod abuts against the sliding block, the first matching surface abuts against the second matching surface; when the sliding block moves from the first position to the second position, the first matching surface and the second matching surface slide relatively and are separated from each other.

3. The reduction device of claim 1, wherein the first sleeve has a first end and a second end, the first end being located on a side of the first sleeve adjacent the pushrod and the second end being located on a side of the first sleeve adjacent the second sleeve; the second sleeve has a third end that is closer to the second end than the first end;

the inner diameter of the second end of the first sleeve is larger than the outer diameter of the third end of the second sleeve, and the difference between the inner diameter of the second end of the first sleeve and the outer diameter of the third end of the second sleeve is smaller than the size value of the sliding block in the radial direction of the second sleeve.

4. The resetting device of claim 2,

the slide block is provided with a third matching surface, the containing groove is provided with a fourth matching surface matched with the third matching surface,

when the sliding block moves from the first position to the second position, the third matching surface and the fourth matching surface slide relatively and are separated from each other; when the sliding block moves from the second position to the first position, the third matching surface and the fourth matching surface slide relatively and are abutted.

5. The resetting device of any one of claims 1-4,

the slider includes a first contact surface facing the second sleeve in a radial direction of the second sleeve and a second contact surface connected to the first contact surface and located in a circumferential direction of the second sleeve,

when the sliding block is located at the first position, the second contact surface abuts against each opening of the second sleeve, and the sliding block is limited to move towards the direction close to the first sleeve along the radial direction of the second sleeve; when the sliding block is located at the second position, the first contact surface abuts against the first inner wall surface of the first sleeve, and the sliding block is limited to move along the radial direction of the second sleeve in the direction away from the first sleeve.

6. The resetting device of any one of claims 1-4,

the number of the sliding blocks is multiple, and the openings and the sliding blocks are evenly distributed along the circumferential direction of the second sleeve.

7. An injection molding apparatus, comprising:

a front mold;

a back mold;

an ejector plate; and

the reset device according to any one of claims 1 to 6,

the push rod is arranged on the front mold, the first sleeve is arranged on the rear mold, the second sleeve is provided with a third end and a fourth end which are opposite, the third end is connected with the first sleeve in a sliding mode, and the fourth end is fixed on the ejector plate.

8. An injection molding apparatus as claimed in claim 7,

the ejector plate comprises a first plate and a second plate which are fixedly stacked, wherein a first face of the first plate is opposite to a second face of the second plate;

a positioning structure is arranged at the fourth end of the second sleeve;

the first surface of the second plate is provided with a positioning groove corresponding to the positioning structure,

wherein the positioning structure is disposed between the first surface of the first plate and the second surface of the second plate and disposed in the positioning groove.

9. An injection molding apparatus as claimed in claim 7 or 8,

when the injection molding device is in a mold closing state, the ejector plate is located at a contraction position;

when the injection molding device is in a demolding state, the ejector plate is located at a demolding position;

when the push rod moves towards the direction close to the pushing end of the push rod, the push rod pushes the ejector plate to move towards the contraction position through the sliding block and the second sleeve;

when the ejector plate moves to the demolding position, the ejector plate pushes the second sleeve to move towards the direction close to the third end of the second sleeve.

10. An injection molding apparatus as claimed in claim 7 or 8,

the injection molding device is provided with a plurality of resetting devices, and the resetting devices are parallel to each other and perpendicular to the ejector plate.

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