A slider positioning structure of a mold

Abstract

The application provides a slider positioning structure of a mold, and belongs to the technical field of molds. The slider positioning structure comprises a base, a connecting rod, a bolt and a positioning hole. The base is fixed in a slider. The connecting rod is hinged to the base. The bolt is vertically slidably arranged in the slider and is provided with a spring between the bolt and the base to keep the bolt in a downward trend. The positioning hole is arranged on a fixed mold. The outer end of the connecting rod extends into the inclined hole and can swing under the extrusion of the inclined guide pillar. The inner end of the connecting rod is connected to the upper end of the bolt and can drive the bolt to lift through swinging. Through the above design, the slider can be reliably locked on the fixed mold through the bolt under the drive of the inclined guide pillar when the mold is opened. The positioning and unlocking of the entire bolt are all driven by the inclined guide pillar, without additional operation actions. Therefore, the mold use reliability is greatly improved, and the mold use convenience is also improved.

Description

Technical Field

[0001] The invention belongs to the technical field of molds and relates to a slider positioning structure of a mold. Background Art

[0002] A slider is a mold component that slides perpendicular to or at a certain angle to the mold opening and closing directions during the mold opening and closing operation. Sliders are used when the product structure prevents the mold from being ejected normally. For example, when a plastic product has through-holes, grooves, or bosses on its sidewalls, the plastic product cannot be ejected directly from the mold. The molded parts of the holes, grooves, and bosses must be made movable, called sliders, also called movable cores. The mechanism that removes and resets the slider is called a core pulling mechanism. During the mold manufacturing process, the design of a core pulling mechanism is unavoidable for many molds. However, when using this core pulling mechanism, the clamping force of the injection molding machine is often insufficient to lock the slider.

[0003] For example, Chinese patent document CN206140830U discloses a novel core-pulling slider mechanism for an injection mold, comprising a slider insert, a spring pin, a slider seat, a slider pressure strip, a slider shovel base, an inclined guide post, a spring pin pressure plate, and a spring. A spring pin is provided in the inner hole of the slider seat groove. The spring pin is fixed to the inner hole of the slider seat groove by a spring pin pressure plate. A spring is placed at the bottom. The slider pressure strip is fixed to the movable mold. The slider seat slides guided within the slider pressure strip. The inclined guide post and the slider shovel base are fixed to the fixed mold. When the mold is closed, the inclined guide post compresses the spring pin and retracts it into the spring pin hole of the slider seat. When the inclined guide post is inserted into the slider seat, the spring pin resets and clamps the inclined guide post. The slider shovel base and the slider seat inclined surface are locked. When the mold is opened, the inclined guide post tilts the slider seat, causing the entire slider mechanism to withdraw from the plastic product. Its advantages are: it adopts a mechanism that cooperates with spring pins and slider inserts. Corresponding to inserts of different shapes, it only needs to push the slider insert to the mold closing position by hand, and then use the spring pin to lock the inclined guide column to open the mold. The operation is simple and quick.

[0004] However, the core-pulling slider mechanism of the above-mentioned mold still has the following defects: when the core-pulling slider mechanism is applied to a two-color or multi-color injection mold, since the slider seat and the inclined guide pin are already in an unlocked state after the mold is opened, that is, the inclined guide pin is in a state of leaving the slider seat, the slider seat is no longer restricted by the inclined guide pin and is very likely to loosen when the mold rotates and changes position. In response to this, the existing technology generally directly uses spring force to position the slider. However, since the spring is an elastic body, it is easily affected by external forces. When the mold rotates, the slider seat and other components will still overcome the spring force under the action of rotational inertia and become loose, which ultimately affects the reliability of the mold. Moreover, the positioning and unlocking operations of the above-mentioned existing slider generally need to be performed manually, making the mold inconvenient to use. Summary of the Invention

[0005] The purpose of the present invention is to address the above-mentioned problems in the existing technology and propose a slider positioning structure for a mold. The technical problem solved by the present invention is how to improve both the reliability and convenience of mold use.

[0006] The purpose of the present invention can be achieved through the following technical solutions: a slider positioning structure of a mold, the mold includes a fixed mold, a movable mold, a slider slidably connected to the fixed mold and an inclined guide column fixed to the movable mold, the slider has an inclined hole, the inclined guide column can penetrate the inclined hole and move the slider to slide, characterized in that the slider positioning structure includes a base, a connecting rod, a latch and a positioning hole for positioning with the latch, the base is fixed in the slider, the connecting rod is hinged on the base, the latch is set in the slider along the vertical sliding direction and A spring is provided between the base to keep the latch in a downward trend, the positioning hole is provided on the fixed mold, the outer end of the connecting rod extends into the inclined hole and can swing under the extrusion of the inclined guide column, the inner end of the connecting rod is connected to the upper end of the latch and can drive the latch to be lifted up by swinging; when the mold is in a closed state, the inclined guide column presses on the connecting rod to enable the latch to overcome the spring force and maintain an upward state; when the mold is in an open state, the inclined guide column is disengaged from the connecting rod, and the latch pops out under the action of the spring force and is inserted into the positioning hole.

[0007] This slider positioning structure is mainly used for two-color and multi-color injection molds that need to move or rotate the mold when opening the mold. Different from the prior art that directly uses spring force to position the slider, the present invention adopts a slider positioning structure and uses a rigid part, a latch, to position the slider, so that the slider can be reliably locked on the fixed mold when opening the mold, thereby preventing the slider from loosening during the mold movement and affecting the reliability of the mold, and the entire positioning and unlocking process is fully automatic. Specifically, the working principle of this slider positioning structure is as follows: when the mold is closing, the inclined guide pin will be inserted into the inclined hole and slowly extended. The slider will slowly move toward the cavity under the movement of the inclined guide pin. During this process, the outer end of the connecting rod will swing downward due to the squeezing of the inclined guide pin. According to the lever principle, the inner end of the connecting rod will swing upward accordingly. Then, the latch will overcome the spring force and move upward under the swing of the connecting rod. That is, the latch will slowly be pulled out of the positioning hole to release the lock. Then, as the inclined guide pin continues to move The mold is moved until the mold is closed, that is, when the mold is in the mold closing state, the inclined guide pin will press on the connecting rod so that the pin overcomes the spring force and remains in the lifted state; when the mold is opening, the inclined guide pin will slowly withdraw from the inclined hole, and the slider will slowly move away from the cavity under the manipulation of the inclined guide pin. During this process, the inclined guide pin will slowly disengage from the outer end of the connecting rod until it is completely disengaged, that is, when the mold is in the mold opening state, the inclined guide pin will disengage from the connecting rod, and then the pin will pop out under the action of the spring force and be reinserted into the positioning hole to achieve mold opening locking. It can be seen from this that the present invention is cleverly designed with the above slider positioning structure. On the one hand, the matching positioning of the pin and the fixed mold positioning hole is very reliable, and it is not easy to loosen during the mold movement process, so that the mold movement is not affected, which greatly improves the reliability of the mold use; on the other hand, by utilizing the original structure of the existing mold, that is, the matching structure of the inclined guide pin and the inclined hole on the slider, the automatic positioning and automatic unlocking of the slider are implemented, and no additional manual operation is required, and no additional operating mechanism is added, thereby improving the convenience of mold use.

[0008] In the aforementioned mold slider positioning structure, the upper end of the latch has a connecting post, and the inner end of the connecting rod has a U-shaped recess. The connecting post is located within the recess and can slide within the recess as the connecting rod swings. Through the coordinated design of the recess and the connecting post, the upward swing of the connecting rod can be converted into the upward movement of the latch. In particular, the open U-shaped recess design can prevent the upper end of the latch and the inner end of the connecting rod from jamming during the coordinated connection, thereby ensuring the reliability of the positioning structure and, by extension, the reliability of the mold.

[0009] In the aforementioned mold slider positioning structure, the base is block-shaped, with a mounting slot defined at its bottom. One end of the slot extends through the base and communicates with the oblique hole. The connecting rod is L-shaped, located within the slot and hingedly connected to the base at its center. This design protects the connecting rod, the transmission element between the latch and the oblique guide post, within the base, preventing it from being jammed and thus ensuring the reliability of the mold.

[0010] In the aforementioned mold slider positioning structure, a sliding sleeve is provided at the bottom of the base. The sleeve is arranged vertically, with its upper end engaging the notch of the mounting slot. The lower end of the sleeve is inserted into the slider, and the upper end of the latch is inserted into and able to slide along the sleeve. This sleeve design provides guidance for the vertical movement of the latch, making its movement more stable and thus improving the reliability of the positioning structure.

[0011] In the aforementioned mold slider positioning structure, the latch has a shoulder portion, and the spring is sleeved on the latch, with one end of the spring resting on the shoulder portion and the other end resting on the sleeve. This design provides a reliable support for the spring, allowing it to better release its elastic force, thereby ensuring the reliability of the latch's ejection action.

[0012] In the aforementioned mold's slider positioning structure, the slider's upper surface is provided with an open mounting cavity that communicates with the oblique hole. The base is secured within the mounting cavity, and the bottom of the cavity is provided with a mounting hole that vertically penetrates the slider. The latch slides within the mounting hole. This design allows the positioning structure module, consisting of the base and latch, to be positioned within the slider. This protects the positioning structure from external forces, thereby improving reliability.

[0013] In the above-mentioned mold slider positioning structure, the inner end of the connecting rod is rotatably connected to a roller, and the inclined guide column can abut against the roller. The above roller design makes it less likely for the inclined guide column to get stuck when squeezing the connecting rod, thereby improving the reliability of the mold.

[0014] In the aforementioned mold's slider positioning structure, a limited slideway is provided on the fixed mold surface below the latch pin. The lower end of the latch pin is located within the limited slideway and can slide within it. The positioning hole is provided within the limited slideway and is located at the end away from the mold cavity. This design allows the limited slideway to provide auxiliary guidance for the slider during mold closing, improving its stability and, therefore, the reliability of the mold.

[0015] Compared with the existing technology, the slider positioning structure of this mold has the following advantages:

[0016] 1. This slider positioning structure utilizes the original slider driven by the inclined guide column technology, and then through the base, connecting rod and latch series structure and the coordinated design of the inclined guide column, so that when the mold is opened, the slider can be reliably locked on the fixed mold through the latch under the drive of the inclined guide column. In addition, the positioning and unlocking of the entire latch are all driven by the inclined guide column, without additional operating structure and operation. Therefore, it greatly improves the reliability of the mold while also improving the convenience of mold use.

[0017] 2. The positioning structure of the slider is reasonably designed, the overall structure is simple and compact, and the manufacturing cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the mold after it is opened.

[0019] Figure 2 It is a structural diagram of the fixed mold part of this mold.

[0020] Figure 3 This is a structural diagram of the inclined guide pin in this mold inserted on the slider.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the slider part when the mold is in the open state.

[0022] Figure 5 It is a structural diagram of the slider in this mold.

[0023] Figure 6 It is a structural diagram of the slider positioning structure in this mold.

[0024] Figure 7 This is a schematic diagram of the exploded structure of the slider positioning structure in this mold.

[0025] In the figure, 1, fixed mold; 1a, positioning hole; 2, movable mold; 3, slider; 3a, inclined hole; 31, mounting cavity; 32, mounting hole; 4, inclined guide column; 5, base; 51, mounting groove; 6, connecting rod; 61, notch; 7, latch; 71, shoulder; 8, spring; 9, connecting column; 10, sliding sleeve; 11, roller; 12, limit slide. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0027] Specifically, if Figure 1As shown, the mold includes a fixed mold 1, a movable mold 2, a slider 3 slidably connected to the fixed mold 1, and an inclined guide column 4 fixed to the movable mold 2. Figure 2 and Figure 3 As shown, the slider 3 has an inclined hole 3a, and the inclined guide post 4 can penetrate the inclined hole 3a and move the slider 3 to slide. Figure 2 and Figure 4 As shown, the slider positioning structure includes a base 5, a connecting rod 6, a latch 7, and a positioning hole 1a for locating and cooperating with the latch 7. The base 5 is fixed within the slider 3, the connecting rod 6 is hinged to the base 5, and the latch 7 is vertically slidable within the slider 3. A spring 8 is provided between the latch 7 and the base 5 to maintain its downward movement. A limited slide 12 is provided on the surface of the fixed mold 1 below the latch 7. The lower end of the latch 7 is located within the limited slide 12 and can slide within the limited slide 12. The positioning hole 1a is provided within the limited slide 12 and is arranged at the end away from the mold cavity. The outer end of the connecting rod 6 extends into the inclined hole 3a and can swing under the pressure of the inclined guide column 4. The upper end of the latch 7 has a connecting column 9, and the inner end of the connecting rod 6 has a U-shaped notch 61. The connecting column 9 is located within the notch 61 and can slide within the notch 61 as the connecting rod 6 swings, thereby driving the latch 7 upward. When the mold is in the closed state, the inclined guide column 4 presses on the connecting rod 6 so that the pin 7 overcomes the elastic force of the spring 8 and remains in the lifted state; when the mold is in the open state, the inclined guide column 4 is disengaged from the connecting rod 6, and the pin 7 pops out under the action of the spring force and is inserted into the positioning hole 1a.

[0028] More specifically, if Figure 4 and Figure 5 As shown, the upper surface of the slider 3 is provided with an open mounting cavity 31 that communicates with the inclined hole 3a. The base 5 is block-shaped and fixed in the mounting cavity 31 by screws. The bottom of the mounting cavity 31 is provided with a mounting hole 32 that vertically penetrates the slider 3. The latch 7 is slidably arranged in the mounting hole 32. Figure 6 and Figure 7 As shown, the bottom of the base 5 is provided with a mounting slot 51, one end of which passes through the base 5 and communicates with the inclined hole 3a. The connecting rod 6 is L-shaped, located within the mounting slot 51 and hingedly connected to the base 5 at its center. A sliding sleeve 10 is provided at the bottom of the base 5. The sliding sleeve 10 is arranged vertically, with its upper end snapping into the notch of the mounting slot 51. The lower end of the sliding sleeve 10 is inserted into the slider 3, and the upper end of the latch 7 is inserted into the sliding sleeve 10 and can slide along the sliding sleeve 10. The latch 7 has a shoulder 71, and a spring 8 is mounted on the latch 7. One end of the spring 8 rests on the shoulder 71, and the other end of the spring 8 rests on the sliding sleeve 10. A roller 11 is rotatably connected to the inner end of the connecting rod 6, and the inclined guide column 4 can rest on the roller 11.

[0029] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0030] Although this document frequently uses terms such as fixed die 1, positioning hole 1a, movable die 2, slider 3, inclined hole 3a, mounting cavity 31, mounting hole 32, inclined guide post 4, base 5, mounting groove 51, connecting rod 6, notch 61, latch 7, shoulder 71, spring 8, connecting post 9, sleeve 10, roller 11, and limiting slideway 12, the use of other terms is not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations would be contrary to the spirit of the present invention.

Claims

1. A slider positioning structure for a mold, the mold comprising a fixed mold (1), a movable mold (2), a slider (3) slidably connected to the fixed mold (1), and an inclined guide column (4) fixed to the movable mold (2), the slider (3) having an inclined hole (3a), the inclined guide column (4) being able to penetrate the inclined hole (3a) and move the slider (3) to slide, characterized in that: The slider positioning structure comprises a base (5), a connecting rod (6), a latch (7) and a positioning hole (1a), wherein the base (5) is fixed in the slider (3), the connecting rod (6) is hinged on the base (5), the latch (7) is arranged in the slider (3) along a vertical sliding direction, and a spring (8) is arranged between the latch (7) and the base (5) to keep the latch (7) moving downward, the positioning hole (1a) is arranged on the fixed mold (1), and the inner end of the connecting rod (6) is rotatably connected to a roller (11). The inclined guide column (4) can be abutted against the roller (11), the outer end of the connecting rod (6) extends into the inclined hole (3a) and can swing under the extrusion of the inclined guide column (4), the inner end of the connecting rod (6) is connected to the upper end of the latch (7) and can drive the latch (7) to be lifted up by swinging; when the mold is in the mold closing state, the inclined guide column (4) presses on the connecting rod (6) so that the latch (7) overcomes the spring force and remains in the lifted state; when the mold is in the mold opening state, the inclined guide column (4) and the connecting rod ( 6) is disengaged, the latch (7) pops out under the action of the spring force and is inserted into the positioning hole (1a); the upper end side of the latch (7) has a connecting column (9), the inner end side of the connecting rod (6) has a U-shaped recess (61), the connecting column (9) is located in the recess (61) and can slide in the recess (61) as the connecting rod (6) swings; the base (5) is block-shaped, and the bottom of the base (5) is provided with a mounting groove (51), one side of the mounting groove (51) The end of the connecting rod (6) passes through the base (5) and communicates with the inclined hole (3a), the connecting rod (6) is L-shaped, the connecting rod (6) is located in the installation groove (51) and the middle part is hingedly connected to the base (5); a sliding sleeve (10) is provided at the bottom of the base (5), the sliding sleeve (10) is arranged vertically and the upper end is clamped at the notch of the installation groove (51), the lower end of the sliding sleeve (10) is inserted into the slider (3), and the upper end of the pin (7) is inserted in the sliding sleeve (10) and can slide along the sliding sleeve (10).

2. The slider positioning structure of the mold according to claim 1, characterized in that: The latch (7) has a shaft shoulder (71), the spring (8) is sleeved on the latch (7), one end of the spring (8) abuts against the shaft shoulder (71), and the other end of the spring (8) abuts against the sliding sleeve (10).

3. The slider positioning structure of the mold according to claim 1 or 2, characterized in that: The upper surface of the slider (3) is provided with an open mounting cavity (31) that communicates with the inclined hole (3a); the base (5) is fixed in the mounting cavity (31); the bottom of the mounting cavity (31) is provided with a mounting hole (32) that vertically penetrates the slider (3); the latch (7) is slidably arranged in the mounting hole (32).

4. The slider positioning structure of the mold according to claim 1 or 2, characterized in that: A limiting slideway (12) is provided on the surface of the fixed mold (1) below the latch (7), the lower end portion of the latch (7) is located in the limiting slideway (12) and is capable of sliding in the limiting slideway (12), and the positioning hole (1a) is provided in the limiting slideway (12) and is arranged at one end away from the mold cavity.

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