A sliding mechanism and mold

Abstract

This invention discloses a sliding mechanism and a mold, relating to the field of mold technology. The sliding mechanism includes a mold core assembly, a base plate, a driven sliding insert, and a blocking device; the base plate has a sliding seat and a first insert, and a shovel assembly is mounted on the sliding seat; the driven sliding insert includes a second insert and a third insert; the blocking device includes a limiting component and a hysteresis component, the limiting component is used to limit the first insert in the horizontal direction, and the sliding seat controls the first insert to move away from the main cavity through the hysteresis component. By setting the sliding seat and the blocking device, the mold structure can be simplified and the control difficulty of the mold can be reduced.

Description

Technical Field

[0001] This invention relates to the field of mold technology, and in particular to a sliding mechanism and a mold. Background Technology

[0002] In the injection molding process, for products with complex shapes and undercuts, such as automotive temperature control system parts with pipe fittings at multiple angles, multiple directional slides are needed to form the undercuts. Current technology requires three slides with different ejection directions on the mold, each requiring a separate drive unit. This increases the mold's footprint, necessitating large machines even for smaller products, resulting in significant waste of machine resources. Furthermore, precise control of the movement sequence of different hydraulic cylinder slides is crucial to avoid interference, further complicating mold control. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a sliding mechanism that can automatically demold in stages, reducing the footprint of the mold and simplifying mold control.

[0004] The present invention also proposes a mold having the above-mentioned sliding mechanism.

[0005] According to a first aspect of the present invention, a sliding mechanism includes a mold core assembly, a base plate, a driven sliding insert, and a blocking device. The mold core assembly includes a front mold and a rear mold, with a main cavity formed between the front mold and the rear mold. The base plate is located on one side of the mold core and is provided with a sliding seat and a first insert. The rear mold, the sliding seat, and the first insert are arranged sequentially in a horizontal direction. The sliding seat and the first insert are slidably connected to the base plate and both slide in a horizontal direction. A shovel assembly is mounted on the sliding seat. The driven sliding insert includes a second insert and a third insert. The second insert is slidably engaged with the front mold, and the third insert is slidably engaged with the first insert. The second insert and the third insert are respectively connected to the shovel assembly. The travel seat is used to drive the forklift assembly to move so that the second insert and the third insert move synchronously toward or away from the main chamber. The first insert, the second insert, and the third insert can enter the main chamber and form a cavity for molding the product between themselves and the inner wall of the main chamber. The blocking device includes a limiting component and a hysteresis component. The limiting component is mounted on the base plate, and the hysteresis component is mounted on the first insert. When the second insert and the third insert move away from the main chamber, the limiting component is used to limit the first insert in the horizontal direction. When the second insert and the third insert disengage from the main chamber, the travel seat controls the first insert to move away from the main chamber through the hysteresis component.

[0006] According to an embodiment of the present invention, a sliding mechanism has at least the following beneficial effects: When the front mold and the rear mold of the mold core assembly are closed, the ends of the first insert, the second insert, and the third insert all extend into the main cavity, and a sealed cavity for molding the product is formed between the outer side wall of the portion of the first insert, the second insert, and the third insert extending into the main cavity and the inner side wall of the main cavity. After the product is molded, the sliding seat moves away from the first insert, and the sliding seat drives the shovel assembly to move. The shovel assembly controls the second insert and the third insert to slide synchronously away from the main cavity. At this time, the limiting component of the blocking device limits the first insert in the horizontal direction to prevent the first insert from interfering with the movement of the third insert. When the second insert and the third insert move to the position of being removed from the main cavity, that is, after the second insert and the third insert are core-pulled out, the limiting component stops working, and the sliding seat drives the hysteresis component to move, thereby driving the first insert to move away from the main cavity. When the first insert also leaves the main cavity, the rear mold can eject the product, completing the demolding of the product. The third insert slides into the first insert, integrating it onto the first insert. This eliminates the need for separate installation space for the third insert, effectively improving the integration of the mechanism and reducing the mold's footprint. By using a slide seat and a blocking device, the movement of the first, second, and third inserts can be controlled by driving the slide seat alone. This eliminates the installation space and operating costs required for separate drive devices for each insert, significantly reducing the mold's footprint, simplifying the mold structure, and saving machine resources. Furthermore, the slide seat and blocking device work together to automatically achieve phased core pulling of the first, second, and third inserts using the slide mechanism's own mechanical structure. This saves users the time and labor costs of controlling different hydraulic cylinders for phased operations, effectively reducing the mold's control difficulty and making it more convenient for users.

[0007] According to some embodiments of the present invention, the limiting assembly includes a rocker arm, a pin, and a reset member. The rocker arm is hinged to the base plate. The reset member is located below the rocker arm to reset the rocker arm. The pin is mounted on the sliding seat. The first insert has a stop block. The pin and the stop block are located on the same side of the sliding seat and both above the rocker arm. The rocker arm has a protrusion located on the side of the pin away from the stop block. The protrusion has a guide portion on the side facing the pin. When the first insert and the second insert enter the main chamber, the rocker arm and the stop block abut against each other. When the sliding seat moves away from the first insert, the pin moves toward the protrusion and presses against the protrusion through the guide portion to rotate the rocker arm.

[0008] According to some embodiments of the present invention, the stop block has a groove on the side facing the swing rod that matches the shape of the swing rod. When the first insert and the second insert enter the main chamber, the swing rod abuts against the inner wall of the groove.

[0009] According to some embodiments of the present invention, positioning platforms are provided on both sides of the first insert, the stop block is installed on the positioning platform, and the positioning platform can abut against the outer side wall of the rear mold.

[0010] According to some embodiments of the present invention, the hysteresis assembly includes a bolt, the sliding seat has a first guide hole, the bolt passes through the first guide hole and is connected to the first insert, the bolt has a nut with an outer diameter larger than the diameter of the first guide hole, the sliding seat has a second guide hole, the second guide hole is located on the side of the first guide hole away from the first insert and communicates with the first guide hole, the nut is accommodated in the second guide hole, and a gap is formed between the nut and the inner end face of the second guide hole for the nut to move.

[0011] According to some embodiments of the present invention, the shovel assembly includes a first shovel and a guide block. The first shovel and the travel seat are fixedly connected. The first shovel is provided with a first traction block, which extends upward in a vertical direction. The guide block and the first insert are fixedly connected. The second insert is provided with a slider, which is provided with a first through hole. The slider and the guide block are slidably connected, and the first traction block passes through the first through hole.

[0012] According to some embodiments of the present invention, the shovel assembly includes a second shovel mounted on the side of the travel seat facing the first insert. The first insert has a third guide hole for sliding of the second shovel and a fourth guide hole for sliding of the third insert. The second shovel has an inclined second traction block at one end away from the travel seat. The second traction block is inclined downward at one end in the horizontal direction away from the travel seat. The third insert has a second through hole through which the second traction block passes.

[0013] According to some embodiments of the present invention, the first insert is provided with a guide post on the side facing the row seat, and the row seat and the guide post are slidably engaged.

[0014] According to some embodiments of the present invention, the row seat has a mounting hole on the side facing the first insert, and an elastic member is mounted in the mounting hole. The two ends of the elastic member abut against the row seat and the first insert, respectively.

[0015] A mold according to a second aspect of the present invention includes the sliding mechanism described in the above embodiments.

[0016] According to an embodiment of the present invention, a mold has at least the following beneficial effects: the third insert in the action mechanism is integrated with the first insert, and there is no need to set up multiple driving devices to drive each insert to pull the core in stages, which can effectively reduce the footprint of the mold, simplify the mold structure, save machine resources and reduce the control difficulty of the mold, and facilitate user control.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a schematic diagram of the structure of a row positioning mechanism according to an embodiment of the present invention;

[0020] Figure 2 This is a side view of a row positioning mechanism according to an embodiment of the present invention;

[0021] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a rear view of a row positioning mechanism according to an embodiment of the present invention;

[0023] Figure 5 yes Figure 4 Cross-sectional view at point B;

[0024] Figure 6 yes Figure 4 Cross-sectional view at point C;

[0025] Figure 7 yes Figure 4 Cross-sectional view at point D.

[0026] Reference numerals: Mold core assembly 100; Cavity 101; Front mold 110; Rear mold 120;

[0027] Substrate 200; Row seat 210; First guide hole 2101; Second guide hole 2102; Mounting hole 2103; First insert 220; Groove 2201; Third guide hole 2202; Fourth guide hole 2203; Stop 221; Positioning stage 222; Guide post 223; Frame 230; End cap 231; Elastic element 240; Drive element 250;

[0028] Shovel assembly 300; First shovel 310; First traction block 311; Guide block 320; Second shovel 330; Second traction block 331;

[0029] Driven insert 400; second insert 410; first through hole 4101; slider 411; protrusion 4111; third insert 420; second through hole 4201;

[0030] 500; 510; 511; 5111; 5112; 512; 513; 5131; 5132; 520; 521; 5211. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0033] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0035] Reference Figures 1 to 7As shown (for ease of viewing, the structure of the mold core assembly 100 is omitted), the sliding mechanism of one embodiment of the present invention can be used for undercut molding of products, particularly for pipe fittings and undercut molding of automotive temperature control system parts. The sliding mechanism of this embodiment includes a mold core assembly 100, a base plate 200, a driven sliding insert 400, and a blocking device 500. The mold core assembly 100 includes a front mold 110 and a rear mold 120. The front mold 110 is located above the rear mold 120 and can move vertically upwards. A main cavity (not shown in the figure) is formed between the front mold 110 and the rear mold 120. The main cavity can be approximated as an unclosed cavity 101 with an opening on one side. The base plate 200 is located on one side of the mold core and is provided with a sliding seat 210 and a first insert. 220. The first insert 220 is positioned directly opposite the opening of the main chamber. The rear mold 120, the slide seat 210, and the first insert 220 are arranged sequentially in the horizontal direction. The slide seat 210 and the first insert 220 are slidably connected to the base plate 200 and both slide in the horizontal direction. The slide seat 210 is equipped with a shovel assembly 300. The base plate 200 is provided with a frame 230, which surrounds the slide seat 210. The frame 230 is equipped with a drive unit 250, and the output end of the drive unit 250 is connected to the slide seat 210 to drive the slide seat 210 in the horizontal direction. The driven sliding insert 400 includes a second insert 410 and a third insert 420. The second insert 410 is slidably engaged with the front mold 110, and the third insert 420 is slidably engaged with the first insert 220. The second insert 410 and the third insert 420 are respectively connected to the shovel assembly 300. The sliding seat 210 is used to drive the shovel assembly 300 to move so that the second insert 410 and the third insert 420 move synchronously toward or away from the main chamber. The first insert 220, the second insert 410, and the third insert 420 can enter the main chamber and interact with the main chamber. A cavity 101 for molding products is formed between the inner sidewalls; the blocking device 500 includes a limiting component 510 and a hysteresis component 520. The limiting component 510 is mounted on the substrate 200, and the hysteresis component 520 is mounted on the first insert 220. When the second insert 410 and the third insert 420 move away from the main cavity, the limiting component 510 is used to limit the first insert 220 in the horizontal direction. When the second insert 410 and the third insert 420 are disengaged from the main cavity, the moving seat 210 controls the first insert 220 to move away from the main cavity through the hysteresis component 520.

[0036] Understandably, when the front mold 110 and rear mold 120 of the mold core assembly 100 are closed, the ends of the first insert 220, the second insert 410, and the third insert 420 all extend into the main cavity. A sealed cavity 101 for molding the product is formed between the outer wall of the portion of the first insert 220, the second insert 410, and the third insert 420 extending into the main cavity and the inner wall of the main cavity. After the product is molded, the drive unit 250 drives the sliding seat 210 to move away from the first insert 220. The sliding seat 210 drives the shovel assembly 300 to move, and the shovel assembly 300 controls the second insert 410 and the third insert 420... Insert 420 slides synchronously away from the main cavity. At this time, the limiting component 510 of the blocking device 500 limits the first insert 220 in the horizontal direction to prevent the first insert 220 from interfering with the movement of the third insert 420. When the second insert 410 and the third insert 420 move to the position away from the main cavity, the limiting component 510 stops working, the driving component 250 continues to work, and the sliding seat 210 drives the lag component 520 to move, thereby driving the first insert 220 to move away from the main cavity. When the first insert 220 also leaves the main cavity, the top plate of the rear mold 120 (not shown in the figure) can eject the product, completing the demolding of the product. The third insert 420 and the first insert 220 slide together, integrating the third insert 420 onto the first insert 220. This eliminates the need for separate installation space for the third insert 420, effectively improving the integration of the mechanism and reducing the mold's footprint. By setting up the slide seat 210 and the blocking device 500, on the one hand, a single drive unit 250 can drive the slide seat 210 to move, controlling the movement of the first insert 220, the second insert 410, and the third insert 420. This eliminates the installation space and operating costs required for setting up separate drive devices for each insert, significantly reducing the mold's footprint, simplifying the mold structure, and saving machine resources. On the other hand, the slide seat 210 and the blocking device work together to automatically achieve the phased core pulling of the first insert 220, the second insert 410, and the third insert 420 based on the mechanical structure of the slide mechanism itself. This saves the time and labor costs required for users to control different hydraulic cylinders for phased operations, effectively reducing the difficulty of mold control and making it more convenient for users to control.

[0037] It should be noted that the drive component 250 can be set as a telescopic cylinder such as a pneumatic cylinder, electric cylinder or hydraulic cylinder with a simple structure and convenient control, which further simplifies the structure of the sliding mechanism and makes it convenient for users to use; the drive component 250 can also be set as a motor or linear module with high stability and high control precision, which improves the working stability and working precision of the motion mechanism. Here, the structure of the drive component 250 is not specifically limited, as long as it can stably drive the sliding seat 210 to move.

[0038] Reference Figure 1 and Figure 2It is understood that the limiting assembly 510 includes a rocker arm 511, a pin 512, and a reset member 513. Two rocker arms 511 are provided, symmetrically arranged on both sides of the sliding seat 210. The pin 512, reset member 513, and rocker arm 511 are correspondingly arranged. The rocker arm 511 is hinged to the frame 230 of the base plate 200. The reset member 513 is located below the rocker arm 511 and is used to reset the rocker arm 511 after it rotates. Pin 512 is installed on the travel seat 210. The first insert 220 is provided with a stop 221. Pin 512 and stop 221 are located on the same side of the travel seat 210 and are both located above the rocker arm 511. The rocker arm 511 is provided with a protrusion 5111. The protrusion 5111 is located on the side of pin 512 away from the stop 221. The side of protrusion 5111 facing pin 512 is provided with a guide portion 5112. The guide portion 5112 is an inclined plane or arc surface. The guide portion 5112 is used for... The guide protrusion 5111 moves towards or away from the downward direction of the pin 512. In other words, the guide portion 5112 prevents interference between the protrusion 5111 and the pin 512 when the pin 512 moves, thus preventing the protrusion 5111 from obstructing the movement of the pin 512. When the first insert 220 and the second insert 410 enter the main chamber, the reset member 513 presses against the rocker arm 511, causing the rocker arm 511 to be in a horizontal position, with the rocker arm 511 facing the stop block 221 and... 1. When the sliding seat 210 moves away from the first insert 220, the sliding seat 210 drives the pin 512 on the side wall to move towards the protrusion 5111. Under the guidance of the guide part 5112, the pin 512 presses against the protrusion 5111 to make the rocker arm 511 rotate. The rotation of the rocker arm 511 separates it from the stop block 221, and the rocker arm 511 releases the horizontal restriction on the first insert 220, so that in subsequent steps, the first insert 220 can move horizontally away from the main chamber. By setting the rocker arm 511 and the pin 512, the first insert 220 is locked when the third insert 420 moves and unlocked after the third insert 420 is pulled out. This avoids problems such as the first insert 220 slipping due to friction, vibration and other factors, which would cause the third insert 420 to be obstructed from moving. It ensures that the movement sequence of the first insert 220 and the third insert 420 is accurate and stable, and effectively improves the operational stability and accuracy of the sliding mechanism.

[0039] Reference Figure 2It is understandable that the stop block 221 has a groove 2201 on the side facing the rocker arm 511 that matches the shape of the rocker arm 511. When the first insert 220 and the second insert 410 enter the main cavity, the rocker arm 511 abuts against the inner wall of the groove 2201. Due to the machining error of the rocker arm 511 itself and the wear caused by long-term use, the rocker arm 511 may not be in perfect contact with the stop block 221 when the front mold 110 and the rear mold 120 are closed. If the length of the rocker arm 511 is increased, the stop block 221 will be subjected to excessive pressure, which may cause the stop block 221 to break or the pin of the rocker arm 511 to break, affecting the normal use of the sliding mechanism. By providing the groove 2201 on the stop block 221, the end of the rocker arm 511 can be accommodated in the groove 2201 when the front mold 110 and the rear mold 120 are closed. In 201, the rocker arm 511 abuts against the inner wall of the groove 2201. Specifically, even if the length of the rocker arm 511 is insufficient, preventing it from abutting against the inner wall of the groove 2201 directly opposite, the upward lifting force of the reset member 513 will cause the end of the rocker arm 511 housed in the groove 2201 to tend to tilt upward, so that the rocker arm 511 abuts against the inner wall of the groove 2201 above it. This arrangement allows for a certain manufacturing error and wear on the rocker arm 511, effectively extending the service life of the limiting component 510.

[0040] Reference Figure 1 and Figure 2 It is understood that positioning platforms 222 are respectively provided on both sides of the first insert 220. The stop block 221 and the positioning platform 222 are connected by bolts 521. The positioning platform 222 can abut against the outer wall of the rear mold 120. By setting the limiting platform, when the first insert 220 enters the main cavity, the positioning platform 222 abuts against the outer wall of the rear mold 120 to position the first insert 220, restricting the first insert 220 from continuing to move into the main cavity. This avoids problems such as deformation of the cavity 101 and increased pressure caused by the first insert 220 going too deep into the main cavity, improves the operational stability of the first insert 220, and ensures that the molded product has no quality problems.

[0041] Reference Figure 3The reset component 513 includes a top block 5131 and a spring 5132. The two ends of the spring 5132 abut against the top block 5131 and the frame 230 respectively. The frame 230 is provided with an end cover 231, which is used to limit the top block 5131 in the vertical direction. It should be noted that the top block 5131 is usually located below the protrusion 5111, that is, the protrusion 5111 and the top block 5131 are arranged in sequence along the vertical direction. Under normal circumstances, the pin 512 is located above the rocker arm 511 and there is a certain distance between the pin 512 and the rocker arm 511. The pin 512 applies downward pressure to the rocker arm 511 only after it contacts the protrusion 5111 (or the guide part 5112 on the protrusion 5111). By placing the top block 5131 below the protrusion 5111, the downward pressure and upward thrust on the rocker arm 511 are concentrated in one place, reducing the torque that the rocker arm 511 needs to bear, further extending the service life of the limiting assembly 510, and improving the structural rationality of the limiting assembly 510.

[0042] Reference Figure 4 and Figure 5 (For ease of viewing, Figure 4 (The driving component 250 and its related structures are omitted in the text). It can be understood that the hysteresis component 520 includes a bolt 521, the sliding seat 210 is provided with a first guide hole 2101, the screw of the bolt 521 passes through the first guide hole 2101 and is fixedly connected to the first insert 220, the end of the bolt 521 away from the first insert 220 is provided with a nut 5211 with an outer diameter larger than the diameter of the first guide hole 2101, the sliding seat 210 is provided with a second guide hole 2102, the second guide hole 2102 is located on the side of the first guide hole 2101 away from the first insert 220 and communicates with the first guide hole 2101, the nut 5211 is accommodated in the second guide hole 2102, and a gap is formed between the inner end faces of the nut 5211 and the second guide hole 2102 for the nut 5211 to move. When the slide seat 210 moves away from the first insert 220, the second guide hole 2102 moves with the slide seat 210. The inner end face of the second guide hole 2102 moves toward the nut 5211, that is, the nut 5211 moves relative to the slide seat 210 toward the inner end face of the second guide hole 2102. As the slide seat 210 moves, the gap between the inner end faces of the nut 5211 and the second guide hole 2102 gradually decreases until the inner end faces of the nut 5211 and the second guide hole 2102 come into contact. The inner end face of the second guide hole 2102 begins to drive the nut 5211 to move away from the first insert 220. The movement of the nut 5211 in turn drives the first insert 220 connected to it to move. By setting bolt 521 to achieve the lag movement of the first insert 220 relative to the third insert 420, the structure of the lag component 520 can be effectively simplified, making it convenient for users to assemble and use the sliding mechanism. Furthermore, bolt 521 has a stable structure and low cost, making it suitable for long-term continuous use of the sliding mechanism and effectively reducing the maintenance cost of the sliding mechanism in the later stage.

[0043] It should be noted that the distance between the end face of the nut 5211 facing the first guide hole 2101 and the inner end face of the second guide hole 2102 is greater than or equal to the distance between the pin 512 and the protrusion 5111. This avoids the nut 5211 from contacting the inner end face of the second guide hole 2102 before the rocker arm 511 has separated from the stop block 221. This also avoids the lag component 520 pulling the first insert 220 in advance, which could cause the rocker arm 511 to be crushed or broken.

[0044] Reference Figure 4 and Figure 6 It is understood that the shovel assembly 300 includes a first shovel 310 and a guide block 320. The first shovel 310 and the travel seat 210 are fixedly connected. The first shovel 310 is provided with a first traction block 311, which extends upward in the vertical direction. The guide block 320 and the first insert 220 are fixedly connected. The second insert 410 is provided with a slider 411. The bottom sides of the slider 411 are respectively provided with protrusions 4111, so that the slider 411 has an inverted "T" shaped structure. The slider 411 is provided with a first through hole 4101. The guide block is provided with a guide rail (not shown in the figure) that matches the shape of the "T" shaped slider 411. The guide rail of the slider 411 and the guide block 320 slide together, thereby improving the installation stability and movement stability of the slider 411. The first traction block 311 passes through the first through hole 4101. Since the second insert 410 is mainly used for the inclined tubular joint on the side wall of the molded product, the second insert 410 is inclinedly set in the front mold 110. The inclination angle and direction of the second insert 410 are determined according to the actual shape of the product. The slider 411 on the second insert 410 is also inclined like the second insert 410. When the slide seat 210 moves in the horizontal direction, the first traction block 311 moves with the slide seat 210. The first traction block 311 drives the slider 411 to move through the inner side wall of the first through hole 4101. The guide rail of the guide block 320 can guide the slider 411 to move stably along the tilt direction of the second insert 410. By setting the first shovel 310 and the guide block 320, the tilt movement of the second insert 410 is decomposed into the horizontal movement of the first shovel 310 and the tilt movement of the slider 411. This allows the slide seat 210 to directly control the tilt movement of the second insert 410 through horizontal movement, ensuring that the movement of the second insert 410 is stable and efficient. While ensuring that the slide mechanism has a simple structure and is easy to use, the working efficiency of the slide mechanism is improved.

[0045] Continue to refer to Figure 4 and Figure 6It is understood that the shovel assembly 300 includes a second shovel 330, which is mounted on the side of the travel seat 210 facing the first insert 220. The first insert 220 is provided with a third guide hole 2202 for sliding of the second shovel 330 and a fourth guide hole 2203 for sliding of the third insert 420. The second shovel 330 is provided with an inclined second traction block 331 at the end away from the travel seat 210. The end of the second traction block 331 that is away from the travel seat 210 in the horizontal direction is inclined downward. The third insert 420 is provided with a second through hole 4201 that matches the shape of the second traction block 331. The second traction block 331 passes through the second through hole 4201. The third insert 420 is mainly used for the undercut of the side wall of the tubular joint of the molded product. Therefore, the third insert 420 is usually perpendicular to the second insert 410 (both the second insert 410 and the third insert 420 can be approximated as strips or tubes). Obviously, the third insert 420 is inclinedly set in the third guide hole 2202 of the first insert 220. By setting the second shovel 330, when the sliding seat 210 moves in the horizontal direction, the second traction block 331 moves with the sliding seat 210. The upper end face of the inclined second traction block 331 is... The inner wall of the second through hole 4201 is displaced. Under the action of the inclined plane, the third insert 420 begins to move in a direction perpendicular to the second insert 410. By setting the second shovel 330, the inclined movement of the second insert 410 is decomposed into the horizontal movement of the second traction block 331. While greatly simplifying the structure of the shovel assembly 300, the volume of the second shovel 330 is reduced, so that both the second shovel 330 and the third insert 420 can be hidden inside the first insert 220, further improving the integration and structural tightness of the sliding mechanism.

[0046] Reference Figure 4 and Figure 7 It is understood that the first insert 220 has multiple guide posts 223 on the side facing the slide seat 210. The guide posts 223 extend horizontally toward the slide seat 210, and the multiple guide posts 223 are spaced apart circumferentially along the second shovel 330. The slide seat 210 has guide holes (not shown in the figure) that match the shape of the guide posts 223. The guide posts 223 pass through the guide holes to allow the slide seat 210 and the guide posts 223 to slide and move in a dynamic fit. By setting the guide posts 223, the slide seat 210 can be guided to move stably and straight toward or away from the first insert 220, effectively improving the movement stability of the slide seat 210 and the structural stability of the slide mechanism. It should be noted that the sliding fit of the second insert 410, the third insert 420 and the first insert 220 described above are all similar to the sliding fit of the guide post 223 and the slide seat 210. Since such structural designs are simple and not the focus of this invention, this is specifically mentioned here to avoid misunderstanding.

[0047] Reference Figure 7It is understandable that the slide seat 210 has a mounting hole 2103 on the side facing the first insert 220, and an elastic element 240 is installed in the mounting hole 2103. The elastic element 240 is usually set as a buffer spring 5132. When the front mold 110 and the rear mold 120 are closed, the two ends of the elastic element 240 abut against the slide seat 210 and the first insert 220 respectively. During the mold closing process of the front mold 110 and the rear mold 120, the movement of the first insert 220 drives the shovel assembly 300 to move. The shovel assembly 300 drives the first insert 220 and the second insert 410 to move towards the main cavity. The elastic element 240 moves synchronously with the slide seat 210 towards the first insert 220. After the elastic element 240 contacts the first insert 220, it drives the first insert 220 to move slowly towards the rear mold 120. The stop block 221 also moves synchronously with the first insert 220. Since the mass of the first insert 220 is large, the moving speed of the first insert 220 is less than that of the elastic element 240. The shrinkage speed of component 240 causes the distance between the first insert 220 and the slide seat 210 to gradually decrease. At the same time, the drive component 250 drives the slide seat 210 to move toward the first insert 220. The pin 512 moves with the slide seat 210 and separates from the protrusion 5111 until the stop 221 leaves the rocker arm 511. The reset component 513 controls the rocker arm 511 to abut against the stop 221 until the first insert 220, the second insert 410 and the third insert 420 all enter the main cavity. The drive component 250 stops working, and the front mold 110 and the rear mold 120 are closed. By setting the elastic element 240, the elastic element 240 can absorb the impact force transmitted to the elastic element 240 by the driving element 250, drive the first insert 220 to move smoothly, and effectively improve the movement stability of the first insert 220. In addition, after the front mold 110 and the rear mold 120 are closed, the elastic element 240 can also press the first insert 220 to ensure the structural stability of the cavity 101 and effectively improve the operational stability of the first insert 220.

[0048] Specifically, the mounting hole 2103 can be coaxial with the guide hole on the sliding seat 210, so that the buffer spring 5132 and the guide post 223 are coaxial and the buffer spring 5132 is sleeved on the guide post 223. This arrangement can make full use of the installation space of the sliding seat 210, effectively improving the installation stability of the elastic element 240 while further improving the structural stability of the sliding mechanism.

[0049] One embodiment of the mold of the present invention includes the sliding mechanism of the above embodiments.

[0050] Since the mold adopts all the technical solutions of the sliding mechanism in the above embodiments, it has at least all the beneficial effects brought about by the technical solutions in the above embodiments, which will not be repeated here.

[0051] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A row positioning mechanism, characterized in that, include: The mold core assembly includes a front mold and a rear mold, with a main cavity formed between the front mold and the rear mold; A base plate is located on one side of the mold core assembly. The base plate is provided with a slide seat and a first insert. The rear mold, the slide seat and the first insert are arranged sequentially in the horizontal direction. The slide seat and the first insert are slidably connected to the base plate and slide in the horizontal direction. A shovel assembly is installed on the slide seat. The driven sliding insert includes a second insert and a third insert. The second insert is slidably engaged with the front mold, and the third insert is slidably engaged with the first insert. The second insert and the third insert are respectively connected to the shovel assembly. The sliding seat is used to drive the shovel assembly to move so that the second insert and the third insert move synchronously toward or away from the main chamber. The first insert, the second insert, and the third insert can enter the main chamber and form a cavity for molding products between themselves and the inner wall of the main chamber. The blocking device includes a limiting component and a hysteresis component. The limiting component is mounted on the substrate, and the hysteresis component is mounted on the first insert. When the second insert and the third insert move away from the main chamber, the limiting component is used to limit the first insert in the horizontal direction. When the second insert and the third insert disengage from the main chamber, the positioning seat controls the first insert to move away from the main chamber through the hysteresis component. The limiting assembly includes a rocker arm, a pin, and a reset member. The rocker arm is hinged to the base plate. The reset member is located below the rocker arm to reset the rocker arm. The pin is mounted on the sliding seat. The first insert has a stop block. The pin and the stop block are located on the same side of the sliding seat and both above the rocker arm. The rocker arm has a protrusion located on the side of the pin away from the stop block. The protrusion has a guide portion on the side facing the pin. When the first insert and the second insert enter the main chamber, the rocker arm and the stop block abut against each other. When the sliding seat moves away from the first insert, the pin moves toward the protrusion and presses against the protrusion through the guide portion to rotate the rocker arm. The hysteresis assembly includes a bolt, the sliding seat has a first guide hole, the bolt passes through the first guide hole and is connected to the first insert, the bolt has a nut with an outer diameter larger than the diameter of the first guide hole, the sliding seat has a second guide hole, the second guide hole is located on the side of the first guide hole away from the first insert and communicates with the first guide hole, the nut is accommodated in the second guide hole, and a gap is formed between the nut and the inner end face of the second guide hole for the nut to move.

2. The row positioning mechanism according to claim 1, characterized in that, The stop block has a groove on the side facing the swing rod that matches the shape of the swing rod. When the first insert and the second insert enter the main chamber, the swing rod abuts against the inner wall of the groove.

3. A row positioning mechanism according to claim 1 or 2, characterized in that, The first insert has positioning platforms on both sides, and the stop block is installed on the positioning platform. The positioning platform can abut against the outer wall of the rear mold.

4. A row positioning mechanism according to claim 1, characterized in that, The shovel assembly includes a first shovel and a guide block. The first shovel is fixedly connected to the travel seat. The first shovel is provided with a first traction block, which extends upward in a vertical direction. The guide block is fixedly connected to the first insert. The second insert is provided with a slider, which has a first through hole. The slider and the guide block are slidably connected, and the first traction block passes through the first through hole.

5. A row positioning mechanism according to claim 1, characterized in that, The shovel assembly includes a second shovel, which is mounted on the side of the travel seat facing the first insert. The first insert has a third guide hole for sliding the second shovel and a fourth guide hole for sliding the third insert. The end of the second shovel away from the travel seat has an inclined second traction block. The end of the second traction block away from the travel seat in the horizontal direction is inclined downward. The third insert has a second through hole, through which the second traction block passes.

6. A row positioning mechanism according to claim 1, characterized in that, The first insert has a guide post on the side facing the row seat, and the row seat and the guide post are slidably engaged.

7. A row positioning mechanism according to claim 1 or 6, characterized in that, The row seat has a mounting hole on the side facing the first insert, and an elastic element is installed in the mounting hole. The two ends of the elastic element abut against the row seat and the first insert, respectively.

8. A mold, characterized in that, Includes a row position mechanism as described in any one of claims 1 to 7.

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