CN215921188U - Core pulling mechanism and movable mold system - Google Patents

Abstract

The application provides a core-pulling mechanism and a movable mold system. The core pulling mechanism comprises a base, a sliding block, a first core body, a second core body, a third core body and a driving piece, wherein the sliding block is in sliding fit with the base, and the driving piece is used for driving the sliding block to slide on the base along the core pulling direction. The first core body and the second core body are connected to the sliding block in a sliding mode, the sliding direction of the first core body is inclined to the moving direction of the sliding block, when the sliding block moves along the core pulling direction under the driving of the driving piece, the moving trend of the first core body is perpendicular to the first sliding groove, and the moving trend of the second core body is perpendicular to the second sliding groove. The third core sets up in the slider, and at the in-process of loosing core, the drawing of patterns direction of first core, second core is different with the third core, and first core and second core can have the trend of drawing close at the in-process of loosing core. Therefore, the core-pulling mechanism can realize the demoulding and the core-pulling in three different directions in a smaller space.

Description

Core pulling mechanism and movable mold system

Technical Field

The application relates to the technical field of molds, in particular to a core-pulling mechanism and a movable mold system.

Background

In some plastic product designs, often because of product inner structure is special, need follow three direction and loose core to avoid damaging the product, for example some needs follow three directions of upper and lower, side and loose core. The conventional die structure cannot realize the simultaneous demoulding and core pulling in three directions in a narrow space.

SUMMERY OF THE UTILITY MODEL

The problem that this application was solved is how to utilize less ground space to realize the drawing of patterns of three directions and loose core.

In order to solve the above problems, in a first aspect, the present application provides a core pulling mechanism, which is applied to a movable mold system, and includes a base, a slider, a first core, a second core, a third core, and a driving member, where the slider is in sliding fit with the base, the driving member is used to drive the slider to slide on the base along a core pulling direction, and surfaces of the first core, the second core, and the third core are used to define an inner surface of a product;

first core passes through first spout sliding fit with the slider, and the second core passes through second spout sliding fit with the slider, and the extending direction homogeneous phase of first spout and second spout is for loosing core the direction slope, and on the opposite direction of the direction of loosing core, first spout and second spout are close to gradually, and third core fixed connection is in the slider.

In the embodiments of the present application, the surfaces of the first core, the second core and the third core are used to define the inner surface of the product, i.e. together as a core. Because the first core body and the second core body are connected on the sliding block in a sliding mode, and the sliding direction of the first core body and the sliding direction of the second core body are inclined to the moving direction (core pulling direction) of the sliding block, when the sliding block moves along the core pulling direction under the driving of the driving piece, the first core body and the second core body both have the tendency of sliding relative to the sliding block. The direction of movement of the first core and the second core should then be the sum of the direction of movement of the slider and the direction of movement of itself relative to the slider. Since the first core can only move relative to the slider along the first sliding groove, the slider can only provide a pulling force (neglecting friction) to the first core perpendicular to the first sliding groove, that is, the movement tendency of the first core is perpendicular to the first sliding groove. Similarly, the movement trend of the second core body is vertical to the second chute. Therefore, in the core pulling process, the demolding direction of the third core body is consistent with the core pulling direction, but the demolding directions of the first core body and the second core body are different from the third core body, and the first core body and the second core body have a tendency of closing because the first core body and the second core body have components in the opposite direction of the core pulling direction relative to the sliding block. Therefore, the core pulling mechanism provided by the embodiment of the application can realize demoulding and core pulling in three different directions in a smaller space.

In an alternative embodiment, the first core and the second core are disposed on opposite sides of the slider, respectively.

In an alternative embodiment, the extending direction of the first sliding chute, the extending direction of the second sliding chute and the core pulling direction are in the same plane.

In an optional embodiment, a first limiting member is disposed on the first core body, and the first limiting member is used for abutting against the slider to limit the displacement degree of the first core body relative to the slider in the direction opposite to the core pulling direction; the second core body is provided with a second limiting part, and the second limiting part is used for being abutted to the sliding block so as to limit the displacement degree of the second core body relative to the sliding block in the opposite direction of the core pulling direction.

In this embodiment, through setting up first locating part, second locating part, can inject the gliding terminal point of first core and second core for the slider of the in-process of loosing core, when first core and second core slide to the terminal point (two locating parts butt slider this moment), have respectively broken away from with the product, later can not slide relative to the slider, but follow the slider and follow the inside removal of product of the direction of loosing core.

In an optional embodiment, the first limiting member is rod-shaped and extends along the extending direction of the first sliding groove, and the first limiting member is connected to the front end of the first core body in the core pulling direction; the second limiting piece is rod-shaped and extends along the extending direction of the second sliding chute, and the second limiting piece is connected to the front end of the second core body in the core pulling direction;

the slider is provided with a first through hole and a second through hole, the first limiting part penetrates through the first through hole, the size of the free end of the first limiting part is larger than the opening of the first through hole, which is far away from one end of the first core, the second limiting part penetrates through the second through hole, and the size of the free end of the second limiting part is larger than the opening of the second through hole, which is far away from one end of the second core.

In an optional embodiment, the first limiting member is sleeved with a first spring, the first spring is accommodated in the first through hole, the second limiting member is sleeved with a second spring, the second spring is accommodated in the second through hole, and the first spring and the second spring are respectively used for pushing the first core body and the second core body to slide relative to the sliding block so as to approach each other.

In the present embodiment, by providing the first spring and the second spring, the first core and the second core have a tendency to slide closer to each other with respect to the slider, and this movement tendency also coincides with a tendency of the first core and the second core to be moved out of the mold, so that the mold release can be assisted.

In an optional embodiment, the core pulling mechanism further includes a limiting block disposed on the first core body, the second core body, or the slider, and the limiting block is configured to abut against an external structure to limit displacement of the slider in a direction opposite to the core pulling direction.

In this embodiment, the process that the slider moves in the opposite direction of the core-pulling direction in the mold closing process can be limited by arranging the limiting block.

In an optional embodiment, a clamping groove is formed in the sliding block, a clamping portion is arranged at the output end of the driving piece, and the clamping groove is matched with the clamping portion. Realize the transmission of driving piece and slider through setting up joint portion and draw-in groove and be connected, can improve the handling efficiency of driving piece and slider.

In an optional embodiment, a main sliding groove is formed in the base, a wear-resisting plate is arranged at the bottom of the main sliding groove, and the sliding block is embedded into the main sliding groove and attached to the wear-resisting plate. Since the sliding friction loss between the slider and the base may be large, in this embodiment, the wear plate is disposed to reduce the friction loss, and if the friction loss is too large, the wear plate may be replaced to maintain a better sliding fit between the slider and the base.

In a second aspect, the present application provides a movable mold system, including a movable mold plate, a fixed mold plate, a movable mold core, a fixed mold core, and the core pulling mechanism according to any one of the foregoing embodiments, wherein a base of the core pulling mechanism is fixed to the movable mold plate, the movable mold core is mounted to the movable mold plate, the fixed mold core is mounted to the fixed mold plate, and the movable mold core and the fixed mold core are used for limiting an outer surface of a product.

Drawings

FIG. 1 is a schematic structural diagram of a plastic product;

FIG. 2 is an enlarged view of portion II of FIG. 1;

FIG. 3 is a schematic view of a core pulling mechanism according to an embodiment of the present application;

FIG. 4 is an exploded view of a core pulling mechanism according to an embodiment of the present application;

FIG. 5 is an enlarged view of portion V of FIG. 3;

FIG. 6 is a schematic view of the engagement of the cores with the sliders according to an embodiment of the present application;

FIG. 7 is an exploded view of various cores and sliders according to one embodiment of the present application;

FIG. 8 is a cross-sectional view of the first core, the second core and the slider in one embodiment of the present application;

FIGS. 9 and 10 are schematic views of a slider at different viewing angles in an embodiment of the present application;

FIG. 11 is a schematic view of a movable mold system according to one embodiment of the present application;

FIG. 12 is an enlarged view of detail XII in FIG. 11;

FIG. 13 is a schematic view of a movable mold system at the beginning of core pulling according to one embodiment of the present application;

fig. 14 is a schematic view of a movable mold system after core pulling is completed according to an embodiment of the present application.

Description of reference numerals: 010-a movable mold system; 100-a core-pulling mechanism; 110-a base; 111-a main runner; 112-a wear plate; 113-a platen; 120-a slide block; 121-a first slide rail; 123-a first mounting groove; 124-a second mounting groove; 125-a first via; 126-a second via; 127-card slot; 128-a block groove; 130-a first core; 131-a first runner; 132-a first mounting hole; 133-a first stop; 134-a first spring; 135-a limiting block; 140-a second core; 141-a second chute; 142-a second mounting hole; 143-a second stop; 144-a second spring; 150-a third core; 160-a drive member; 161-a clamping part; 200-moving the template; 210-moving die core; 220-a first stop; 230-a second stop; 300-fixing a template; 310-fixing the mold core; 020-product; 021-upper inner wall; 022-lower inner wall; 023-fastener.

Detailed Description

In some plastic product designs, because of product inner structure is special, need follow three directions and loose core to avoid damaging the product. Fig. 1 is a schematic structural diagram of a plastic product 020; fig. 2 is an enlarged view of a portion II in fig. 1. As shown in fig. 1 and 2, the product 020 has an inner cavity, and the inner cavity has two opposite inner walls, an upper inner wall 021 and a lower inner wall 022, and due to the special structure of the two walls, the core is required to be demolded in a direction substantially perpendicular to the walls, which results in a different demolding direction required on the two inner walls. For example, the core is required to be separated from the upper inner wall 021 downwards at the upper inner wall 021; the need for the core to lift off the lower inner wall 022 at the lower inner wall 022. And the product 020 is also provided with a buckle 023, and the demoulding direction of the core at the buckle 023 is consistent with the opening direction of the inner cavity of the product 020 (approximately perpendicular to the display plane of fig. 2 outwards), and is different from the demoulding direction at the upper inner wall 021 and the lower inner wall 022. And the conventional mould structure can not realize the simultaneous demoulding and core pulling in three directions in a narrow space.

Therefore, the embodiment of the application provides a core pulling mechanism, which can realize the simultaneous demoulding and core pulling in three different directions in a narrow space. In addition, this application embodiment still provides a movable mould system.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below.

FIG. 3 is a schematic view of a core pulling mechanism 100 according to an embodiment of the present application; fig. 4 is an exploded view of the core pulling mechanism 100 according to an embodiment of the present application. The core pulling mechanism 100 provided by the embodiment of the application can perform demolding and core pulling on the product 020 shown in fig. 1. As shown in fig. 3 and 4, the core pulling mechanism 100 includes a base 110, a slider 120, a first core 130, a second core 140, a third core 150, and a driving member 160, the slider 120 is slidably engaged with the base 110, the driving member 160 is configured to drive the slider 120 to slide on the base 110 in a core pulling direction, and surfaces of the first core 130, the second core 140, and the third core 150 are configured to define an inner surface of a product 020, that is, the first core 130, the second core 140, and the third core 150 jointly function as a core. In this embodiment, the surface of the first core 130 corresponds to the upper inner wall 021 of the product 020, the surface of the second core 140 corresponds to the lower inner wall 022 of the product 020, and the surface of the third core 150 corresponds to the wall surface of the buckle 023.

In the embodiment, the base 110 is provided with a main sliding chute 111, the bottom of the main sliding chute 111 is provided with a wear-resistant plate 112, and the slider 120 is embedded into the main sliding chute 111 and attached to the wear-resistant plate 112. Since the sliding friction loss between the slider 120 and the base 110 may be large, in this embodiment, the wear plate 112 is provided to reduce the friction loss, and if the friction loss is too large, the slider 120 and the base 110 may be maintained in a better sliding fit state by replacing the wear plate 112. Specifically, in the present embodiment, the slider 120 has flanges on both sides, the extending direction of the flanges is the same as the core pulling direction, the pressing plates 113 are disposed on both sides of the main chute 111, and the pressing plates 113 are used for pressing the flanges to limit the slider 120 in the main chute 111, so that the slider can only move along the main chute 111. Of course, in an alternative embodiment, the main chute 111 may be directly arranged in an inverted T shape or a dovetail shape without the pressing plate 113; further, the main slide groove 111 may be provided in the slider 120, and the slide rail may be provided in the base 110 to be matched therewith, so that the slider 120 can be restricted from moving in the core back direction.

In this embodiment, the driving member 160 is a cylinder, an air cylinder, or a linear motor. Fig. 5 is an enlarged view of a portion V in fig. 3, and as shown in fig. 5, in an alternative embodiment, a locking groove 127 is provided on the slider 120, a locking portion 161 is provided at an output end of the driving member 160, and the locking groove 127 is matched with the locking portion 161. The catch groove 127 is a T-shaped groove in this embodiment, and extends from the surface of the slider 120 in a direction perpendicular to the core pulling direction. The driving part 160 is connected with the slider 120 in a transmission manner by arranging the clamping portion 161 and the clamping groove 127, so that the assembling and disassembling efficiency of the driving part 160 and the slider 120 can be improved. In alternative embodiments, the output end of the driving member 160 can be connected to the sliding block 120 by screwing, connecting or even welding.

FIG. 6 is a schematic view of the engagement of the cores with the slider 120 according to an embodiment of the present application; FIG. 7 is an exploded view of each core and slider 120 in one embodiment of the present application; fig. 8 is a cross-sectional view of the first core 130, the second core 140 and the slider 120 according to an embodiment of the present disclosure. As shown in fig. 6 to 8, in the embodiment of the present application, the first core 130 and the slider 120 are in sliding fit through the first sliding groove 131, the second core 140 and the slider 120 are in sliding fit through the second sliding groove 141, the extending directions of the first sliding groove 131 and the second sliding groove 141 are both inclined with respect to the core pulling direction, in the opposite direction of the core pulling direction, the first sliding groove 131 and the second sliding groove 141 gradually approach each other, and the third core 150 is fixedly connected to the slider 120. In this embodiment, the first sliding slot 131 is disposed on the first core 130, and is matched with the first sliding rail 121 convexly disposed on the sliding block 120; the second sliding slot 141 is disposed on the second core 140, and is matched with a second sliding rail protruding from the sliding block 120. The first core 130 and the second core 140 are limited to be able to move only relative to the slider 120 along the extending direction of the first slide groove 131 and the second slide groove 141, respectively, i.e., are unable to displace relative to the slider 120 in the direction perpendicular to the first slide groove 131 and the second slide groove 141. For this reason, the first and second chutes 131 and 141 are both dovetail grooves in the present embodiment. In other embodiments, the first sliding groove 131 and the second sliding groove 141 may be disposed on the slider 120, the first sliding rail 121 may be disposed on the first core 130, and the second sliding rail may be disposed on the second core 140.

In the present embodiment, the first core 130 and the second core 140 are respectively disposed at opposite sides of the slider 120. Further, the extending direction of the first sliding groove 131, the extending direction of the second sliding groove 141, and the core pulling direction are on the same plane, in other words, the direction vector of the first core 130 and the second core 140 sliding relative to the slider 120, and the core pulling direction vector are all parallel to the display plane of fig. 8. Of course, because the specific inner cavity structure of the product 020 is different, in other alternative embodiments, the extending direction of the first sliding groove 131, the extending direction of the second sliding groove 141, and the core pulling direction may not be in the same plane, and the first core 130 and the second core 140 are not necessarily located on two opposite sides of the slider 120, but may also be located on two adjacent sides of the slider 120.

It can be seen that in the present embodiment, in the opposite direction to the core pulling direction, the first slide groove 131 and the second slide groove 141 are gradually closed, which means that if the first core 130 and the second core 140 slide relative to the slide 120 due to pulling the slide 120, the moving trends of the two cores are close to each other, the first core 130 moves toward the second core 140, and the second core 140 moves toward the first core 130, and the moving trends of the two cores determine their respective demolding directions. Specifically, the moving direction of the first core 130 and the second core 140 should be the sum of the moving direction of the slider 120 and the moving direction of the slider 120. Since the first core 130 can only move along the first slide groove 131 with respect to the slider 120, the slider 120 can only provide a tensile force (neglecting a frictional force) perpendicular to the first slide groove 131 to the first core 130, that is, a movement tendency of the first core 130 is perpendicular to the first slide groove 131. Similarly, the second core 140 tends to move perpendicular to the second chute 141. Therefore, the first core 130 is released from the mold in a direction perpendicular to the first chute 131 and toward the second core 140 side, and the second core 140 is released from the mold in a direction perpendicular to the second chute 141 and toward the first core 130 side, without considering the frictional force. Since the third core 150 is connected to the slider 120, during the core pulling process, the mold releasing direction of the third core 150 is the same as the core pulling direction, but the mold releasing directions of the first core 130 and the second core 140 are different from the third core 150, and since the slippage of the first core 130 and the second core 140 relative to the slider 120 has a component in the opposite direction of the core pulling direction, the first core 130 and the second core 140 tend to approach each other. As can be seen, the core pulling mechanism 100 provided in the embodiment of the present application can achieve demolding and core pulling in three different directions in a relatively small space.

As shown in fig. 6, the first core 130 is provided with a first limiting member 133, and the first limiting member 133 is configured to abut against the slider 120 to limit the displacement degree of the first core 130 relative to the slider 120 in the opposite direction of the core pulling direction; the second core 140 is provided with a second stopper 143 (see fig. 12), and the second stopper 143 is configured to abut against the slider 120 to limit the displacement degree of the second core 140 relative to the slider 120 in the direction opposite to the core back direction. With reference to fig. 7 and 8, in the present embodiment, the first limiting member 133 is rod-shaped and extends along the extending direction of the first sliding groove 131, and the first limiting member 133 is connected to the front end of the first core 130 in the core pulling direction; the second limiting member 143 is rod-shaped and extends along the extending direction of the second sliding groove 141, and the second limiting member 143 is connected to the front end of the second core body 140 in the core-pulling direction. The slider 120 is provided with a first through hole 125 and a second through hole 126, the first limiting member 133 passes through the first through hole 125, and the size of the free end of the first limiting member 133 is larger than the opening of the first through hole 125 at the end far from the first core 130, the second limiting member 143 passes through the second through hole 126, and the size of the free end of the second limiting member 143 is larger than the opening of the second through hole 126 at the end far from the second core 140. In this way, the free ends of the first limiting member 133 and the second limiting member 143 can be abutted against the outside of the first through hole 125 and the second through hole 126, respectively.

In this embodiment, by providing the first limiting member 133 and the second limiting member 143, the end points of the first core 130 and the second core 140 sliding relative to the slider 120 in the core pulling process can be limited, and when the first core 130 and the second core 140 slide to the end points (at this time, the two limiting members abut against the slider 120), each of the first core 130 and the second core 140 has already been separated from the product 020, and then do not slide relative to the slider 120, but move out from the inside of the product 020 along the core pulling direction along with the slider 120. In the present embodiment, the first limiting member 133 and the second limiting member 143 have equal length.

Optionally, the first limiting member 133 is externally sleeved with a first spring 134 (see fig. 4), the first spring 134 is accommodated in the first through hole 125, the second limiting member 143 is externally sleeved with a second spring 144 (see fig. 4), the second spring 144 is accommodated in the second through hole 126, and the first spring 134 and the second spring 144 are respectively used for pushing the first core 130 and the second core 140 to slide relative to the sliding block 120 so as to approach each other.

In an alternative embodiment, the core pulling mechanism 100 further includes a stopper 135 disposed on the first core 130, the second core 140, or the slider 120, and the stopper 135 is configured to abut against an external structure to limit the displacement of the slider 120 in the direction opposite to the core pulling direction. In this embodiment, the stopper 135 is provided to limit the movement of the slide 120 in the opposite direction to the core-pulling direction during mold clamping. As shown in fig. 6, in the present embodiment, the stopper 135 is disposed on the first core 130, specifically, the stopper 135 is configured to abut against a first stop 220 (shown in fig. 4) fixed on the movable mold plate 200, and the first stop 220 has a C-shape, an opening of which is adapted to a size of the stopper 135, so as to better position the stopper 135.

The first limiting member 133 and the second limiting member 143 can be detachable. As shown in fig. 7, the first core 130 is provided with a first mounting hole 132 for mounting a first limiting member 133; the second core 140 is provided with a second mounting hole 142 for mounting a second stopper 143. In addition, the stopper 135 may also be detachable, so that the first core 130 is further provided with a mounting hole for mounting the stopper 135.

Fig. 9 and 10 are schematic views of the slider 120 in the embodiment of the present application from different viewing angles. In this embodiment, the first slide rail 121 and the second slide rail are also detachable, and as shown in fig. 9 and 10, the slider 120 is provided with a first mounting slot 123 and a second mounting slot 124 for mounting the first slide rail 121 and the second slide rail, respectively. In addition, in the present embodiment, the slide 120 is further provided with a stop groove 128 for cooperating with a second stop 230 (shown in fig. 4) fixed on the movable mold plate 200, and the cooperation between the second stop 230 and the stop groove 128 can achieve mold opening guiding and mold closing limiting.

FIG. 11 is a schematic view of a movable mold system 010 according to an embodiment of the present application; fig. 12 is an enlarged view of a portion XII in fig. 11. As shown in fig. 11 and 12, the present invention provides a movable mold system 010, which includes a movable mold plate 200, a fixed mold plate 300, a movable mold core 210, a fixed mold core 310, and the core pulling mechanism 100, wherein the movable mold core 210 is mounted on the movable mold plate 200, the fixed mold core 310 is mounted on the fixed mold plate 300, the movable mold core 210 and the fixed mold core 310 are used for defining an outer surface of a product 020, and a base 110 is fixed on the movable mold plate 200.

When demolding is performed after the product 020 is formed, the driving member 160 can pull the slider 120 to realize core pulling. When the driving member 160 applies a pulling force to the slider 120 in the core pulling direction, the third core 150 has a movement tendency in the core pulling direction, and the demolding direction of the third core 150 relative to the product 020 is the core pulling direction. At this time, if the friction force is not considered, the force of the slider 120 on the first core 130 can only be perpendicular to the first sliding groove 131, because the slider 120 cannot provide the force of the first core 130 along the first sliding groove 131 because the slider is smooth along the first sliding groove 131, and the movement tendency of the first core 130 is perpendicular to the first sliding groove 131. That is, the demolding direction of the first core 130 with respect to the product 020 is a direction perpendicular to the first chute 131. Similarly, the mold release direction of the second core 140 with respect to the product 020 is a direction perpendicular to the second chute 141. After the driving member 160 is activated, the first spring 134 and the second spring 144 act as auxiliary force, so that the first core 130 and the second core 140 can move closer together more easily, and at the same time, the first limiting member 133 and the second limiting member 143 both act as a certain guiding function.

Fig. 13 is a schematic view of the movable mold system 010 at the start of core pulling according to an embodiment of the present application. As can be seen from fig. 13, immediately after the core pulling starts, the free end of the first stopper 133 partially protrudes from the first through hole 125 (the free end of the second stopper 143 partially protrudes from the second through hole 126), and the stopper abuts against the first stopper 220, so that the first core 130 and the second core 140 are in a state of being close to the right end of the slider 120. Fig. 14 is a schematic view illustrating the movable mold system 010 completing core pulling according to an embodiment of the present disclosure. As can be seen from fig. 14, when the core pulling is completed, the first core 130, the second core 140, and the third core 150 are pulled out from the product 020, the first core 130 and the second core 140 are in a state of being away from the right end of the slider 120, and the free end of the first limiting member 133 is already abutted on the slider 120 (the free end of the second limiting member 143 is already abutted on the slider 120). Due to the abutting effect of the first and second limiting members 133 and 143 and the slider 120, the first and second core bodies 130 and 140 can only slide to a certain extent relative to the slider 120, and then are extracted from the product 020 along the core-pulling direction together with the slider 120. Before the first core 130 and the second core 140 slide to the limit with respect to the slider 120, the actual moving direction of the first core 130 and the second core 140 should be the sum of the moving direction of the slider 120 and the moving direction of each with respect to the slider 120 (the two cores are close to each other).

In addition, the core pulling process can be performed simultaneously with the mold opening, the movable mold plate 200 and the movable mold core 210 are away from the fixed mold plate 300 and the fixed mold core 310, and the final product 020 remains on the movable mold core 210.

In summary, in the core pulling mechanism 100 according to the embodiment of the present application, since the first core 130 and the second core 140 are slidably connected to the slider 120, and the sliding direction is inclined to the moving direction (core pulling direction) of the slider 120, when the slider 120 is driven by the driving member 160 to move along the core pulling direction, both the first core 130 and the second core 140 tend to slide relative to the slider 120. Since the first core 130 can only move along the first slide groove 131 with respect to the slider 120, the slider 120 can only provide a tensile force (neglecting a frictional force) perpendicular to the first slide groove 131 to the first core 130, that is, a movement tendency of the first core 130 is perpendicular to the first slide groove 131. Similarly, the second core 140 tends to move perpendicular to the second chute 141. Therefore, in the core pulling process, the mold release direction of the third core 150 is the same as the core pulling direction, but the mold release directions of the first core 130 and the second core 140 are different from the third core 150, and since the slippage of the first core 130 and the second core 140 relative to the slider 120 has a component in the direction opposite to the core pulling direction, the first core 130 and the second core 140 also have a tendency to close together. As can be seen, the core pulling mechanism 100 provided in the embodiment of the present application can achieve demolding and core pulling in three different directions in a relatively small space.

The movable mold system 010 provided by the embodiment of the present application includes the core-pulling mechanism 100, and therefore, the movable mold system has the above-mentioned advantages.

Although the present application is disclosed above, the present application is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present disclosure, and it is intended that the scope of the present disclosure be defined by the appended claims.

Claims (10)

1. A core-pulling mechanism applied to a movable mold system is characterized by comprising a base (110), a slider (120), a first core (130), a second core (140), a third core (150) and a driving piece (160), wherein the slider (120) is in sliding fit with the base (110), the driving piece (160) is used for driving the slider (120) to slide on the base (110) along a core-pulling direction, and the surfaces of the first core (130), the second core (140) and the third core (150) are used for limiting the inner surface of a product (020);

the first core body (130) is in sliding fit with the sliding block (120) through a first sliding groove (131), the second core body (140) is in sliding fit with the sliding block (120) through a second sliding groove (141), the extending directions of the first sliding groove (131) and the second sliding groove (141) are both inclined relative to the core pulling direction, the first sliding groove (131) and the second sliding groove (141) are gradually close to each other in the opposite direction of the core pulling direction, and the third core body (150) is fixedly connected to the sliding block (120).

2. Core pulling mechanism according to claim 1, wherein said first core (130) and said second core (140) are respectively arranged on opposite sides of said slider (120).

3. Core pulling mechanism according to claim 2, wherein the direction of extension of the first runner (131), the direction of extension of the second runner (141) and the direction of core pulling are in the same plane.

4. The core pulling mechanism according to claim 1, wherein a first limiting member (133) is provided on the first core body (130), the first limiting member (133) being configured to abut against the slider (120) to limit a degree of displacement of the first core body (130) relative to the slider (120) in a direction opposite to the core pulling direction; the second core body (140) is provided with a second limiting piece (143), and the second limiting piece (143) is used for being abutted to the sliding block (120) so as to limit the displacement degree of the second core body (140) relative to the sliding block (120) in the direction opposite to the core pulling direction.

5. The core pulling mechanism according to claim 4, wherein the first limiting member (133) is rod-shaped and extends along an extending direction of the first sliding groove (131), the first limiting member (133) being connected to a front end of the first core body (130) in the core pulling direction; the second limiting piece (143) is rod-shaped and extends along the extending direction of the second sliding groove (141), and the second limiting piece (143) is connected to the front end of the second core body (140) in the core pulling direction;

the slider (120) is provided with a first through hole (125) and a second through hole (126), the first limiting member (133) penetrates through the first through hole (125), the size of the free end of the first limiting member (133) is larger than the opening of the first through hole (125) far away from one end of the first core body (130), the second limiting member (143) penetrates through the second through hole (126), and the size of the free end of the second limiting member (143) is larger than the opening of the second through hole (126) far away from one end of the second core body (140).

6. The core pulling mechanism according to claim 5, wherein said first retaining member (133) is externally sheathed with a first spring (134), said first spring (134) being housed inside said first through hole (125), said second retaining member (143) is externally sheathed with a second spring (144), said second spring (144) being housed inside said second through hole (126), said first spring (134) and said second spring (144) being respectively used for pushing said first core body (130) and said second core body (140) to slide with respect to said sliding block (120) so as to mutually approach.

7. The core pulling mechanism according to claim 1, wherein the core pulling mechanism (100) further comprises a stop block (135) arranged at the first core body (130), the second core body (140) or the slider (120), the stop block (135) being adapted to abut against an external structure for limiting a displacement of the slider (120) in a direction opposite to the core pulling direction.

8. The core pulling mechanism according to claim 1, wherein a clamping groove (127) is arranged on the sliding block (120), a clamping portion (161) is arranged at the output end of the driving piece (160), and the clamping groove (127) is matched with the clamping portion (161).

9. The core pulling mechanism according to claim 1, wherein a main sliding chute (111) is arranged on the base (110), a wear plate (112) is arranged at the bottom of the main sliding chute (111), and the sliding block (120) is embedded into the main sliding chute (111) and is attached to the wear plate (112).

10. A movable mould system, comprising a movable mould plate (200), a fixed mould plate (300), a movable mould core (210), a fixed mould core (310) and the core pulling mechanism (100) according to any one of claims 1 to 9, wherein the base (110) of the core pulling mechanism (100) is fixed to the movable mould plate (200), the movable mould core (210) is mounted to the movable mould plate (200), the fixed mould core (310) is mounted to the fixed mould plate (300), and the movable mould core (210) and the fixed mould core (310) are used for defining the outer surface of a product (020).

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