TWM625388U - Slider positioning mechanism and plastic mold - Google Patents

Abstract

A slider positioning mechanism and a plastic mold. The slider positioning mechanism is configured to lock the slider (100) slidably connected in the chute of the mold body (200) to the mold body, and the slider positioning mechanism includes an elastic component (300), wherein the elastic component is arranged on the sliding groove of the mold body (200). One of the groove wall (204) and the slider, and the other is provided with two positioning grooves (203) matched with the elastic component, and the elastic component is set so that: when the slider is located at the head end and the end of the preset sliding stroke can be inserted into the two positioning grooves respectively to lock the slider on the mold body. The plastic mold includes the above-mentioned slider positioning mechanism.

Description

Slider positioning mechanism and plastic mold

This creation relates to the field of mold technology, such as a slider positioning mechanism and a plastic mold.

In the plastic mold, two strip-shaped pressing blocks are usually set on one of the fixed mold and the movable mold to form a chute, in which a slider (also called core pulling) is slidably arranged, and the chute can guide the slider along the A linear path sliding perpendicular to the opening and closing directions of the plastic mold or at a certain angle to the opening and closing directions. The slider is generally provided with an inclined guide hole, and the inclined guide hole is fixedly installed on the other side of the fixed mold and the movable mold. The column can be inserted into and moved out of the guide hole when the plastic mold is closed and opened, so as to drive the slider to slide according to the above-mentioned linear path, so as to facilitate the core-pulling operation.

In order to determine the position of the slider after the plastic mold is opened and closed, so as to accurately align with the inclined guide post, a positioning module is usually set at the bottom of the chute. The positioning module generally includes a positioning pin and a spring. It acts between the positioning pin and the groove bottom of the chute, so that the positioning pin can maintain the tendency to protrude upward and press against the slider. There are two positioning slots at the bottom of the slider. After opening and closing the mold and moving, the two positioning grooves can face the positioning pins respectively, allowing the positioning pins to move up and abut into the positioning grooves, thereby limiting the sliding of the slider and locking the slider in the positioning grooves middle.

However, since the tension force of the spring continues to act on the bottom surface of the slider, the slider will be inclined to a certain degree. During the core pulling operation, the slider will swing up and down and interfere with the molded plastic product, resulting in occasional scratches on the plastic product. injuries, etc.

The present invention provides a slider positioning mechanism, which can avoid up and down deflection of the slider when positioning the slider.

An embodiment provides a slider positioning mechanism, which is configured to lock a slider slidably connected in a chute of a mold body to the mold body, and the slider positioning mechanism includes an elastic component, wherein the elastic component is disposed on the mold body. One of the slot wall of the chute and the slider, and the other one of the slot wall of the chute and the slider are provided with two positioning slots matched with the elastic component, so The elastic component is set so that when the sliding block is located at the beginning and the end of the preset sliding stroke, it can extend into the two positioning grooves respectively to lock the sliding block on the mold body.

Optionally, the slider positioning mechanism further includes a first body, the first body is detachably arranged on the mold body or the slider, and the two positioning grooves are arranged on the first body on the side wall.

Optionally, the elastic component includes: The second body is detachably arranged on the mold body or the slider; a positioning pin, movably inserted into the second body, the positioning pin can be extended or retracted in the second body; and The elastic member is configured to drive the positioning pin to stop protruding from the second body.

Optionally, the locating pin includes a locating segment that can be inserted into the locating slot, and the end face of the locating segment and the slot bottom surface of the locating slot have a cross section parallel to the slot bottom plane of the chute. V-shaped.

Optionally, the included angle of the V-shape is 60 to 120 degrees.

Optionally, the positioning pin further includes an anti-rotation section slidably matched with the second body, and the shape of the cross-section of the anti-rotation section in an axial direction perpendicular to the positioning pin is non-circular.

Optionally, the positioning pin further includes a limiting section, and the limiting section can abut against the second body when the positioning pin extends into the positioning groove.

Optionally, the elastic member is a compression spring, the positioning pin further includes a guide section, the guide section is provided at an end of the positioning pin away from the positioning groove, and the compression spring is partially sleeved on the guide segment.

Optionally, the elastic component is arranged on the slider, and the elastic component further includes: at least one pin is connected to the second body and the slider along the telescopic direction perpendicular to the positioning pin; At least one screw is screwed to the second body and the slider along a telescopic direction perpendicular to the positioning pin.

The invention also provides a plastic mold, which can avoid scratching the molded plastic product during the core-pulling operation.

An embodiment provides a plastic mold, which includes the slider positioning mechanism as described above.

In the description of this creation, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between the two elements. For those with ordinary knowledge in the technical field, the specific meanings of the above terms in the present creation can be understood in specific situations.

In this creation, unless otherwise expressly specified and limited, the first feature "on" or "under" the second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, "above", "above" and "above" a first feature over a second feature include the first feature being directly above and obliquely above the second feature, or simply mean that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature, including the first feature being directly below and diagonally below the second feature, or simply indicating that the first feature has a lower level than the second feature.

In the description of this embodiment, the terms "up", "down", "right", etc., are based on the orientation or positional relationship shown in the drawings, which are only for the convenience of description and simplification of operations, rather than indicating Or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation on the present invention. In addition, the terms "first" and "second" are only used for distinction in description, and have no special meaning.

This embodiment provides a plastic mold. The plastic mold includes a fixed mold and a movable mold. The fixed mold and the movable mold together form a cavity for molding a plastic product. When the side wall of the plastic product to be produced has structures such as holes, grooves or bosses, the plastic product cannot be directly released from the cavity. Therefore, in this embodiment, the fixed or movable mold is set to form the above-mentioned holes. , grooves and bosses and other structures part of the molding parts adopt movable structure, that is, a slider that can slide relative to the fixed die or the movable die. When the mold is closed, the slider moves toward the cavity to a preset working position, so that the contour of the cavity is consistent with the plastic product to be molded; when the mold is opened, the slider moves away from the cavity to A preset mold opening working position, so that the slider can be separated from the above-mentioned structures such as holes, grooves and bosses, so as to take out the plastic products.

As shown in FIG. 1 , taking the slider 100 set on the fixed mold as an example, the slider 100 is slidably connected to the mold body 200 of the fixed mold. The mold body 200 includes a template 201 and two bars fixedly connected to the template 201 . The top surface of the template 201 and the side walls of the two pressure blocks 202 form a linearly extending chute, and the slider 100 is slidably installed in the chute, that is, the template 201 is slidably matched with the bottom surface of the slider 100, and the two Each pressing block 202 is slidably fitted with the two opposite side walls of the slider 100 parallel to the extending direction of the chute, and can partially cover the slider 100 to confine the slider 100 in the chute, so that the slider 100 It can only slide along a specific linear path, so as to be in the above-mentioned mold clamping working position and mold opening working position.

The sliding action of the slider 100 can be realized based on the opening and closing action process of the fixed mold and the movable mold, for example, an oblique guide post core pulling mechanism, an inclined slider core pulling mechanism or a rack and pinion core pulling mechanism can be used. For implementation, related technologies may be used, which will not be repeated here.

Among them, in order to be suitable for the slider 100 to be able to accurately cooperate with the corresponding core-pulling mechanism when the plastic mold is opened and closed, it needs to be accurately positioned at the above-mentioned mold-clamping working position and mold-opening work when the mold is opened and closed. Location. In addition, in order to prevent the slider 100 from sliding from the mold closing working position to the mold opening working position during the mold opening process, that is, the up and down deflection during the core pulling operation and scratching the surface of the plastic product, the present embodiment also provides a Slider positioning mechanism, the slider positioning mechanism is described in detail below.

Please refer to FIG. 2 , FIG. 3 and FIG. 4 together. The slider positioning mechanism includes an elastic component 300 , and the pressure block 202 is arranged to enclose a groove wall 204 that forms a chute. The slot 203 is provided with an elastic component 300 on the slider 100 . When the slider 100 is located at the head end of the preset sliding stroke S (that is, the sliding stroke of the slider 100 between the mold-closing working position and the mold-opening working position) (ie, one of the mold-closing working position and the mold-opening working position) At the end (ie, the mold clamping working position and the mold opening working position are the other), the elastic component 300 can respectively extend into the two positioning grooves 203 under the action of its own elastic force, thereby locking the slider 100 to the mold body 200 .

Taking the clamping action as an example, the slider 100 will slide from the position shown in FIG. 2 to the position shown in FIG. 4 , and the slider 100 will overcome the elastic force of the elastic component 300 under the action of the driving force of the core pulling mechanism, so that the elastic component 300 is contracted. Remove one of the positioning grooves 203 to the state shown in FIG. 3 , the elastic component 300 is continuously pressed against the groove wall 204 of the chute under the action of its own elastic force, so that the sliding process of the sliding block 100 is damped smoothly. When the clamping action is completed, the elastic component 300 That is, it faces another positioning groove 203 and is inserted into the positioning groove 203 , thereby locking the slider 100 to the mold body 200 again.

With the above structure, not only can the slider 100 be accurately positioned during the opening and closing of the plastic mold, but also because the elastic force of the elastic component 300 acts between the side wall of the pressing block 202 and the side wall of the slider 100, it will not be The slider 100 is caused to swing up and down, so that the molded plastic product will not be scratched when the slider 100 slides from the mold closing working position to the mold opening working position.

In this embodiment, the above-mentioned slider positioning mechanism may be provided with two or more numbers, that is, FIG. 2 , FIG. 3 and FIG. 4 only show the slider set between the slider 100 and one of the pressing blocks 202 . positioning mechanism. In this embodiment, a slider positioning mechanism can also be arranged between the slider 100 and another pressing block 202 , and the two slider positioning mechanisms can be symmetrically arranged to work together to make the slider 100 more accurately positioned. Precise and more stable posture.

In other optional embodiments, the above-mentioned positioning groove 203 and the elastic component 300 can be respectively disposed on the slider 100 and the mold body 200 in a position-replacement manner. Assembly 300 is disposed on press block 202 . The structure associated with the positioning groove 203 and the elastic component 300 mentioned below is still described by taking the positioning groove 203 and the elastic component 300 respectively disposed on the mold body 200 and the slider 100 as an example. It is known that, in other embodiments in which the positions of the positioning groove 203 and the elastic assembly 300 are exchanged, the structures associated with the positioning groove 203 and the elastic assembly 300 described below can be exchanged correspondingly.

In addition, in this embodiment, the pressure block 202 is not limited to an integrated or separate structure. If the part of the pressure block 202 with the two positioning grooves 203 is set as the first body, the first body can be regarded as the whole pressure block 202, and also Can be seen as part of the compact 202 . In order to adapt to different sliders 100, plastic products, etc., the first body can be configured to be detachably connected to the mold body 200, so that by replacing and installing different first bodies, the plastic mold has different spacing, size of the two positioning grooves 203. Correspondingly, the elastic assembly 300 may include a second body 1 , the second body 1 can be detachably mounted on the slider 100 , so that it can be replaced with a specification adapted to the first body installed on the mold body 200 , so as to realize the Universal function of multiple plastic molds for slider positioning mechanism.

Please refer to FIG. 5 to FIG. 8 below to describe the structure of the elastic component 300 in detail.

Please refer to FIG. 5 and FIG. 6 , in addition to the above-mentioned second body 1 , the elastic assembly 300 further includes a positioning pin 2 and an elastic member 3 . The positioning pin 2 is movably inserted into the mounting hole 11 provided through the second body 1 , so that the end of the positioning pin 2 for matching with the positioning groove 203 can be extended or retracted in the second body 1 . The elastic member 3 is configured to drive the positioning pin 2 to stop at the protruding second body 1 , that is, when an external force acts on the positioning pin 2 , the end of the positioning pin 2 that is matched with the positioning groove 203 can protrude from the second body. 1.

Exemplarily, as shown in FIG. 6 , the elastic member 3 may be a compression spring, the first end of the compression spring is inserted into the blind hole 101 opposite to the installation hole 11, and the second end abuts on the positioning pin 2, so that the The positioning pin 2 provides a pushing force toward the pressing block 202 . In other embodiments, the elastic member 3 may also be an elastic sheet, a gas spring, or the like.

As shown in FIG. 7 and FIG. 8 , the part where the positioning pin 2 is matched with the positioning groove 203 is defined, that is, the end of the positioning pin 2 that can be inserted into the positioning groove 203 is divided into a positioning segment 21 . The end face of the positioning segment 21 and the positioning The cross-section of the groove bottom surface of the groove 203 on the groove bottom plane parallel to the chute can be V-shaped, so that when the positioning pin 2 is driven by the core pulling mechanism to move out of the positioning groove 203, the end surface of the positioning section 21 can be along the V-shape. The slope groove wall 204 of the shaped chute slides out smoothly. The included angle of the above-mentioned V shape can be selected from 60 degrees to 120 degrees.

The positioning pin 2 also includes an anti-rotation section 22 that is slidingly matched with the second body 1. The shape of the cross-section of the anti-rotation section 22 in the axial direction perpendicular to the positioning pin 2 is non-circular. Correspondingly, the mounting hole 11 is set to accommodate The part of the anti-rotation segment 22 is non-circular and is adapted to the anti-rotation segment 22, so that the positioning pin 2 can only be extended and retracted in the axial direction and cannot be rotated around the axial direction, so as to ensure that the positioning segment 21 and the V-shaped chute are in the correct position. right.

In order to prevent the positioning pin 2 from popping out of the mounting hole 11 under the pressing force of the elastic member 3 , the positioning pin 2 may further include a limiting segment 23 , and the limiting segment 23 can abut against the second body 1 when the positioning pin 2 extends into the positioning groove 203 . catch. For example, the limiting section 23 may have a structure with an outer diameter larger than other parts of the positioning pin 2. Accordingly, the mounting hole 11 may be provided with a stepped hole, and the larger end of the mounting hole 11 faces away from the pressing block 202 and is set to accommodate The limit segment 23 of the positioning pin 2 .

The positioning pin 2 can also include a guide section 24, the guide section 24 can be set at the end of the positioning pin 2 away from the positioning groove 203, and the compression spring is partially sleeved on the guide section 24, so that the guide section 24 can be used to guide and avoid the expansion and contraction process. Medium skew.

In addition, as shown in FIGS. 6 to 9 , in order to ensure that the second body 1 is securely mounted on the slider 100 , in this embodiment, the elastic component 300 further includes at least one pin 4 and at least one screw 5 . 1 is provided with a screw hole 12 and a pin hole 13, the pin 4 is inserted into the pin hole 13 along the telescopic direction perpendicular to the positioning pin 2, and is pinned to the second body 1 and the slider 100, and the screw 5 is perpendicular to the positioning pin 2. It is inserted into the screw hole 12 in the telescopic direction, and is screwed to the second body 1 and the slider 100 .

The slider positioning mechanism provided by the present invention is inserted by means of the elastic component 300 disposed on one of the mold body 200 and the slider 100, and the two positioning grooves 203 disposed on the other of the mold body 200 and the slider 100. The connection and cooperation can not only accurately position the slider 100 during the process of opening and closing the plastic mold, but also because the elastic force of the elastic component 300 acts between the side wall of the pressing block 202 and the side wall of the slider 100, it will not cause slippage. Block 100 swings up and down.

The plastic mold provided by the present invention includes the above-mentioned slider positioning mechanism, which can prevent the slider 100 from swinging up and down when the slider 100 is positioned, thereby preventing the molded plastic product from being scratched during the core pulling operation.

This creation claims the priority of the Chinese patent application with an application date of July 22, 2021 and an application number of 202121673137.5, the entire contents of which are incorporated into this creation by reference.

100: Slider 101: Blind hole 200: Mold body 201: Template 202: briquetting 203: Positioning slot 204: Groove Wall 300: Elastic Components 1: The second body 11: Mounting holes 12: Screw holes 13: pin hole 2: Locating pin 21: Positioning segment 22: Anti-rotation section 23: Limit segment 24: Guide segment 3: elastic parts 4: pin 5: Screws S: Sliding stroke

[Fig. 1] is a schematic diagram of the matching structure of the slider, the pressing block and the mold body in the embodiment of the present invention. [Fig. 2] is a schematic structural diagram of the slider positioning mechanism in the embodiment of the present invention when the plastic mold is opened. [FIG. 3] is a schematic structural diagram of the slider positioning mechanism in the process of opening and closing the plastic mold in this creative embodiment. [FIG. 4] is a schematic structural diagram of the slider positioning mechanism in the embodiment of the present invention when the plastic mold is in a clamping state. [FIG. 5] is a schematic structural diagram of the elastic component in the embodiment of the present invention. [FIG. 6] is a cross-sectional view of the elastic component in the embodiment of the present invention. [FIG. 7] is a schematic structural diagram of the exploded state of the elastic component in the embodiment of the present invention. [ FIG. 8 ] is a perspective view of an exploded state of the elastic component in the embodiment of the present invention.

100: Slider

101: Blind hole

202: briquetting

203: Positioning slot

204: Groove Wall

300: Elastic Components

1: The second body

2: Locating pin

3: elastic parts

4: pin

5: Screws

S: Sliding stroke

Claims (10)

A slider positioning mechanism, which is characterized by being configured to lock a slider (100) slidably connected in a chute of a mold body (200) to the mold body (200), the slider positioning mechanism comprising an elastic component (300) , wherein the elastic component (300) is arranged on one of the slot wall (204) of the chute and the slider (100), and the slot wall (204) of the chute and the slider (100) The other is provided with two positioning grooves (203) matched with the elastic component (300), and the elastic component (300) is set so that when the slider (100) is located at the beginning and the end of the preset sliding stroke , can respectively extend into the two positioning grooves (203) to lock the slider (100) on the mold body (200). The slider positioning mechanism according to claim 1, further comprising a first body, the first body being detachably disposed on the mold body (200) or the slider (100), the two positioning grooves ( 203) is disposed on the side wall of the first body. The slider positioning mechanism according to claim 1, wherein the elastic component (300) comprises: a second body (1) detachably disposed on the mold body (200) or the slider (100); positioning A pin (2) is movably inserted into the second body (1), the positioning pin (2) can be extended or retracted in the second body (1); and an elastic member (3) is configured to drive the second body (1) The positioning pin (2) is stopped to protrude from the second body (1). The slider positioning mechanism according to claim 3, wherein the positioning pin (2) comprises a positioning segment (21) that can be inserted into the positioning groove (203), an end face of the positioning segment (21) and the positioning groove The cross-sections of the groove bottom surface of (203) on the groove bottom plane parallel to the chute are all V-shaped. The slider positioning mechanism according to claim 4, wherein the included angle of the V-shape is 60 to 120 degrees. The slider positioning mechanism according to claim 3, wherein the positioning pin (2) further comprises a The anti-rotation section (22) of the two bodies (1) is slidingly matched, and the shape of the cross-section of the anti-rotation section (22) in the axial direction perpendicular to the positioning pin (2) is non-circular. The slider positioning mechanism according to claim 3, wherein the positioning pin (2) further comprises a limiting segment (23), and the limiting segment (23) can extend into the positioning groove ( 203) in contact with the second body (1). The slider positioning mechanism according to claim 3, wherein the elastic member (3) is a compression spring, the positioning pin (2) further comprises a guide section (24), and the guide section (24) is arranged on the positioning pin (24). 2) At one end away from the positioning groove (203), the compression spring is partially sleeved on the guide section (24). The slider positioning mechanism according to claim 3, wherein the elastic component (300) is arranged on the slider (100), and the elastic component (300) further comprises: at least one pin (4), which is perpendicular to the The telescopic direction of the positioning pin (2) is pinned to the second body (1) and the slider (100); at least one screw (5) is screwed to the first screw (5) along the telescopic direction perpendicular to the positioning pin (2). Two main bodies (1) and the slider (100). A plastic mold is characterized by comprising the slider positioning mechanism described in any one of claims 1 to 9.

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