A stop device for a sliding block mechanical core-pulling mold

Abstract

The application provides a limiting device of a slider mechanical core-pulling mold, which comprises a guide piece, a driving block and a limiting mechanism. The guide piece is fixedly connected with a movable mold plate, and the movable mold plate slides along the height direction of the core-pulling mold. The driving block is fixedly connected with the fixed mold plate. The limiting mechanism is connected with the fixed mold plate, and comprises the driving block which is in sliding connection with the guide piece and a locking assembly which is in sliding connection with the driving block. The guide piece is provided with a guide rail along the height direction of the core-pulling mold, the guide rail at one end of the locking assembly is narrowed along the width direction of the core-pulling mold, and the guide piece is in close contact with and in sliding connection with the guide rail. The above structure improves the stability of the formed slider.

Description

Technical Field

[0001] This application relates to the field of injection molding equipment, and more particularly to a limiting device for a slider mechanical core-pulling mold. Background Technology

[0002] Core-pulling molds generally follow two approaches. One approach uses a slanted guide post and slider mechanism. The vertical relative motion generated during mold closing and opening is converted into the lateral core-pulling motion of the slider via the slanted guide surface. Positioning is typically achieved using limit clamps or stops. The second approach uses a hydraulic cylinder to directly drive the slider for reciprocating motion. The cylinder stroke is the core-pulling and reset stroke. The movement of the upper and lower molds and the cylinder is achieved through limit switches or mechanical sequence blocks.

[0003] When the size and mass of the slider increase and the core-pulling stroke lengthens, the inclined guide post solution will be prone to bending due to lateral force and the force on the long cantilever. The end position-dependent limit clamp is prone to failure under inertial impact. Long-term operation will also lead to stability problems such as guide surface wear and repeated end position displacement. While the direct drive of the hydraulic cylinder eliminates the inclined surface transmission, its action time is directly added to the molding cycle, requires oil circuit or buffer control, and has high oil leakage and maintenance risks, resulting in increased downtime and cleaning costs.

[0004] Therefore, a limiting device for a sliding block mechanical core-pulling mold is needed to improve the stability of the forming slider. Utility Model Content

[0005] In view of this, it is necessary to provide a limiting device for a sliding block mechanical core-pulling mold that improves the stability of the forming slider in order to solve the above problems.

[0006] Embodiments of this application provide a limiting device for a slider-type mechanical core-pulling mold, comprising:

[0007] A guide component is fixedly connected to a movable template, which slides along the height direction of the core-pulling mold.

[0008] The driving block is fixedly connected to the fixed template;

[0009] A limiting mechanism is connected to a fixed template, the limiting mechanism including a driving block slidably connected to the guide member and a locking component slidably connected to the driving block;

[0010] The guide member is provided with a guide rail along the height direction of the core-pulling mold. The guide rail located at one end of the locking assembly narrows along the width direction of the core-pulling mold. The guide member is in close contact with and slidably connected to the guide rail.

[0011] In at least one embodiment of this application, the locking component includes:

[0012] The fastener is fixedly connected to the fixed template;

[0013] The locking slider passes through the fixing member and fits against the fixed template, and slides along the height direction of the core pulling device with the fixed template.

[0014] In at least one embodiment of this application, the locking component further includes:

[0015] The shrinking component is arranged along the height direction of the core-pulling device, with one end connected to the fixing component and the other end connected to the locking slider;

[0016] The abutment block is fixedly connected to the locking slider and passes through the outside of the fixing member.

[0017] In at least one embodiment of this application, the locking component includes:

[0018] A rotating shaft is rotatably connected to the fixed component;

[0019] The reset component has a rotating shaft passing through one end, and the other end of the reset component abuts against the abutting block.

[0020] In at least one embodiment of this application, the fastener has a sliding groove, and the abutment block passes through the fastener.

[0021] In at least one embodiment of this application, the locking slider includes a chamfered surface, and the driving block slides along the chamfered surface until it abuts against the side length of the chamfered surface.

[0022] In at least one embodiment of this application, the retractable member is a spring.

[0023] In at least one embodiment of this application, the limiting device of the slider mechanical core-pulling mold includes:

[0024] The forming slider is slidably connected to the fixed template along the width direction of the core-pulling mold and is fixedly connected to the driving block.

[0025] In at least one embodiment of this application, the drive block has an arc-shaped groove.

[0026] In at least one embodiment of this application, the limiting device includes:

[0027] A locking ring is threadedly connected to the fixed template, and the locking ring is located in an arc-shaped groove.

[0028] The limiting device of the slider mechanical core-pulling mold provided above, when the mold is closed, the guide moves linearly along the height direction of the core-pulling device, and the drive block is laterally guided into the locking area by the narrow section at the end of the guide rail. The locking slider forms a rigid end position, reliably limiting the end point of the core pulling. Attached Figure Description

[0029] Figure 1 This is a perspective view of the limiting device of the slider mechanical core-pulling mold described in this application in the mold-closing state.

[0030] Figure 2 This is a front view of the limiting device of the slider mechanical core-pulling mold described in this application in the mold-closing state.

[0031] Figure 3 for Figure 2 Sectional view of AA;

[0032] Figure 4 for Figure 2 Sectional view of BB;

[0033] Figure 5 A perspective view of the limiting device of the slider mechanical core-pulling mold described in this application in the mold opening state;

[0034] Figure 6 This is a front view of the limiting device of the slider mechanical core-pulling mold described in this application in the mold opening state;

[0035] Figure 7 for Figure 6 Sectional view of CC;

[0036] Explanation of main component symbols

[0037] 100. Limiting device for sliding block mechanical core-pulling mold; 10. Guide component; 11. Guide rail; 20. Moving template; 40. Fixed template; 50. Limiting mechanism; 51. Driving block; 511. Arc groove; 52. Locking assembly; 521. Fixing component; 527. Sliding groove; 522. Locking slider; 528. Beveled surface; 523. Shrinkage component; 524. Abutment block; 525. Rotating shaft; 526. Reset component; 60. Forming slider; 70. Locking ring; F1. Height direction of core-pulling mold; F2. Width direction of core-pulling mold. Detailed Implementation

[0038] The embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0039] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have an intervening component. When a component is considered to be "placed" on another component, it can be directly placed on the other component or may also have an intervening component. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and similar expressions used in this article are for illustrative purposes only.

[0040] This application provides a limiting device for a slider-type mechanical core-pulling mold, including a guide member, a drive block, and a limiting mechanism. The guide member is fixedly connected to a movable template, which slides along the height direction of the core-pulling mold. The drive block is fixedly connected to a fixed template. The limiting mechanism is connected to the fixed template and includes a drive block slidably connected to the guide member and a locking component slidably connected to the drive block. The guide member has a guide rail along the height direction of the core-pulling mold, and the guide rail at one end of the locking component narrows along the width direction of the core-pulling mold. The guide member and the guide rail are in contact and slidably connected.

[0041] During mold closing, the guide moves linearly along the height direction of the core-pulling device. The drive block is laterally guided into the locking area by the narrowing section at the end of the guide rail, and the locking slider forms a rigid end position, reliably limiting the end point of the core pulling.

[0042] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0043] Please see Figures 1-7 This application provides a limiting device 100 for a sliding block mechanical core-pulling mold, including a guide member 10, a drive block 51, and a limiting mechanism 50. The guide member 10 is fixedly connected to a moving template 20, which slides along the height direction F1 of the core-pulling mold. The drive block 51 is fixedly connected to a fixed template 40. The limiting mechanism 50 is connected to the fixed template 40 and includes a drive block 51 slidably connected to the guide member 10 and a locking component 52 slidably abutting against the drive block 51. The guide member 10 is provided with a guide rail 11 along the height direction F1 of the core-pulling mold. The guide rail 11 located at one end of the locking component 52 narrows along the width direction F2 of the core-pulling mold, and the guide member 10 is in contact with and slidably connected to the guide rail 11.

[0044] During the mold closing process, the moving template 20 slides along the height of the core-pulling mold, causing the guide member 10 to slide along the height direction F1 of the core-pulling mold. As the driving block 51 slides along the height direction F1 of the core-pulling mold, it engages with the guide rail 11. When the driving block 51 slides to the narrowing position of the guide rail 11, the forming slider 60 slides along the width direction F2 of the core-pulling mold, and is fixedly connected to the driving block 51. When the forming slider 60 slides, it causes the driving block 51 to slide along the width direction F2 of the core-pulling mold and engage with the fixed template 40. One end of the driving block 51 in the height direction F1 of the core-pulling mold abuts against the guide member 10, and the other end of the driving block 51 in the height direction F1 of the core-pulling mold abuts against the locking assembly 52. ​​These are opposing abutment structures in the same direction.

[0045] In this embodiment, it should be noted that the limiting device consists of a guide member 10 fixed on the moving template 20, a drive block 51 fixed to the fixed template 40, and a limiting mechanism 50 connected to the fixed template 40. The guide member 10 is integrally provided with a guide rail 11 extending along the mold height direction, and the guide rail 11 gradually narrows along the mold width direction at one end near the locking component 52. The limiting mechanism 50 includes another drive block 51 slidably connected to the guide member 10 and a locking component 52 slidably abutting against the drive block 51. During operation, the moving template 20 reciprocates along the height direction when the mold is closed or open, and the guide member 10 moves accordingly, causing the drive block 51 that cooperates with it to slide linearly along the guide rail 11. When the drive block 51 enters the narrowing section of the guide rail 11, it is laterally guided to the locking area under geometric guidance, forming a surface-to-surface sliding abutment with the stop surface of the locking component 52, achieving rigid limiting at the mold opening end. During reverse movement, the drive block 51 retracts from the narrowing section and releases its contact with the locking component 52, preventing jamming. To complete the core-pulling transmission, this embodiment provides a forming slider 60 and fixes it to the drive block 51, allowing it to slide along the width direction of the mold, thereby realizing the conversion from vertical displacement to lateral core-pulling or resetting.

[0046] The technical solution implemented in this embodiment allows the drive block 51 to be reliably guided into the locking area by the narrowing section of the guide rail 11 without the need for a hydraulic cylinder. A mechanical lock provides a rigid end position at the mold opening end, thus replacing the traditional limiting clamp with a mechanical limit, significantly improving the repeatability and impact resistance of the core-pulling endpoint. Simultaneously, the linear guide between the guide member 10 and the drive block 51 bears the motion and lateral loads, reducing reliance on the inclined guide post and lowering the risk of bending and instability under large-size, long-stroke slider conditions. Since the entire system uses purely mechanical transmission and locking, it avoids hydraulic action time and leakage risks, facilitating a larger core-pulling stroke and stable operation without lengthening the molding cycle.

[0047] The locking assembly 52 includes a fixing member 521 and a locking slider 522. The fixing member 521 is fixedly connected to the fixed template 40. The locking slider 522 passes through the fixing member 521, fits against the fixed template 40, and slides along the height direction of the core-pulling device.

[0048] In this embodiment, it should be noted that the locking assembly 52 consists of a fixing member 521 and a locking slider 522. The fixing member 521 is fastened to the mounting base surface of the fixed template 40 by a fastening connection. It has a guide hole extending along the height direction of the mold, and the guide hole matches the shape of the locking slider 522 in a clearance fit, thereby providing linear guidance for the locking slider 522. The locking slider 522 passes through the fixing member 521 with its body, and its sliding direction is consistent with the height direction of the mold.

[0049] The locking slider 522 has a positioning surface on the side facing the fixed template 40 that fits against the base surface of the fixed template 40, so that the locking slider 522 can directly close the load onto the fixed template 40 in a surface-to-surface manner when it is in the working or non-working position. To ensure the stability of guidance and load bearing, the fixing member 521 is preferably an integral block structure, and the length of the guide hole has a sufficient guiding ratio relative to the stroke of the locking slider 522 to reduce the sway during sliding.

[0050] The outer surface of the locking slider 522 can be chamfered or have a guide section to facilitate assembly and reduce scratching when entering the guide hole. The above structure only uses two types of mating relationships: fixed connection and linear sliding. The structure is simple, the force path is clear, and it is easy to process and maintain.

[0051] The locking slider 522 moves only along the height direction under the guidance of the double-sided enclosure of the fixing member 521, avoiding swaying and jamming caused by lateral forces, and improving the smoothness and reliability of locking or unlocking actions. Furthermore, the mating positioning surfaces of the locking slider 522 and the fixed template 40 form a stable force closed loop, directly transmitting end-position impacts and working loads to the fixed template 40, significantly improving end-position rigidity and repeatability, and reducing local stress and wear on the fixing member 521 and the sliding pair. Finally, the separate structure of the fixing member 521 and the fixed template 40 facilitates independent machining and replacement, and the simple linear pair of the guide hole and slider reduces manufacturing and assembly difficulty, making it suitable for long-term stable operation under large-size, long-stroke slider conditions.

[0052] The locking assembly 52 further includes a retractable member 523 and an abutment block 524. The retractable member 523 is arranged along the height direction of the core-pulling device, one end of the retractable member 523 is connected to the fixing member 521, and the other end of the retractable member 523 is connected to the locking slider 522. The abutment block 524 is fixedly connected to the locking slider 522 and extends through the fixing member 521.

[0053] In this embodiment, it should be noted that: the locking assembly 52 has a guide channel arranged inside the fixing member 521, which is aligned with the height direction of the mold. The locking slider 522 passes through the channel with a clearance fit and reciprocates in a straight line. The retraction member 523 is arranged in the same direction, with one end fixed to the fixing member 521 and the other end fixed to the locking slider 522. It is used to provide a preload force to the locking slider 522, so that it automatically extends towards the locking position when not subjected to external force, thereby forming a default mechanical lock at the mold opening end. To facilitate external triggering for unlocking, an abutment block 524 is fixedly connected to one side of the locking slider 522. The abutment block 524 protrudes from the outside of the fixing member 521, making it easy to be pressed by an external lever or trigger surface. The abutment block 524 and the locking slider 522 are rigidly connected to ensure that the triggering force does not pass through the retraction member 523 but acts directly on the locking slider 522 body, achieving reliable retraction. Preferably, the shrinking member 523 can be arranged in the closed cavity between the locking slider 522 and the fixing member 521 to prevent dust and chips. The locking slider 522 has chamfered ends to reduce scratching when entering the guide channel. The exposed length and end face shape of the abutment block 524 can be matched according to the stroke and contact form of the external trigger to obtain a stable trigger contact area.

[0054] The technical solution of this embodiment enables the locking slider 522 to be normally closed and locked by the continuous pre-tightening force provided by the shrinkage member 523 without increasing hydraulic drive. During mold opening, the locking slider 522 automatically extends to receive end impacts, improving end rigidity and repeatability. During mold closing, the direct action of the abutment block 524 and the external lever first overcomes the pre-tightening of the shrinkage member 523, causing the locking slider 522 to retract, completing the reset and unlocking process before allowing the slider to return to its original position, avoiding mutual jamming and sticking.

[0055] Because the triggering force is transmitted through the rigid path of the abutment block 524 to the locking slider 522 instead of through the contraction member 523, the contraction member 523 only undertakes the functions of reset and compensation and does not participate in the end force, which significantly reduces the risk of fatigue and permanent compression deformation of the elastic element. At the same time, the contraction force can be set by changing the elastic parameters or adjusting the preload, so that the mechanical window for locking and unlocking is clear and the action sequence is controllable, which is suitable for high-reliability operation under the conditions of large mass and long stroke slider.

[0056] In one embodiment, the retraction member 523 is a spring.

[0057] The locking assembly 52 includes a rotating shaft 525 and a resetting member 526. The rotating shaft 525 is rotatably connected to the fixing member 521. The rotating shaft 525 passes through one end of the resetting member 526, and the other end of the resetting member 526 abuts against the abutting block 524.

[0058] In this embodiment, it should be noted that: the locking assembly 52 has a rotatably mounted rotating shaft 525 on the fixing member 521. The axis of the rotating shaft 525 is preferably arranged laterally with the height direction of the mold, and the rotatable connection is achieved through bearings or mating holes. The reset member 526 is a rocker arm or a fork with rollers pivoting on the rotating shaft 525. One end of the rotating shaft 525 passes through a shaft hole and rotates coaxially with it. The other end of the rotating shaft 525 forms a contact end face for pushing, which is normally positioned opposite to the abutment block 524 and maintains a small gap. The other side of the reset member 526 is also provided with an external trigger surface, which is arranged on the movement path of the moving platen 20 or the drive block 51 so that it is pressed by the trigger surface in the early stage of the mold closing stroke, thereby driving the reset member 526 to rotate around the rotating shaft 525 and apply force to the abutment block 524.

[0059] To ensure smooth movement and prevent biting, the pushed end face of the abutment block 524 and the contact end face of the reset member 526 are matched with a planar or arc-shaped contact surface, and the rotation angle is provided with a limiting shoulder or a stop surface. A locating pin or spline can be provided at the connection between the rotating shaft 525 and the reset member 526 to facilitate angle assembly and maintenance. The function between the reset member 526 and the abutment block 524 is rigid pushing, without transmitting force through the retracting member 523, so that the retracting member 523 only undertakes the function of locking the extension and reset of the slider 522.

[0060] In the initial stage of mold closing, the reset component 526 is driven by the trigger surface to rotate around the rotation axis 525, directly pressing against the abutment block 524, causing the locking slider 522 to overcome the pre-tightening of the shrinking component 523 and retract first, thus unlocking the locking mechanism. Subsequently, the main drive pushes the forming slider 60 to reset, realizing a definite timing sequence of unlocking first and then returning to position, avoiding interference between the slider return stroke and the locking component.

[0061] Because the unlocking thrust is transmitted through a rigid link of reset component 526—abutment block 524—locking slider 522, the retraction component 523 does not participate in end-position force, thus reducing its risk of fatigue and permanent deformation. The rotating shaft 525—rocker arm structure is insensitive to dust and off-center loads, ensuring reliable operation. Furthermore, the unlocking advance can be precisely set by adjusting the initial angle or stop position of the reset component 526, ensuring that unlocking is completed in the early stage of mold closing without affecting subsequent mold closing and clamping, thereby improving the stability and lifespan of the entire limiting device under conditions of large mass and long stroke sliders.

[0062] The fixing member 521 has a sliding groove 527, and the abutting block 524 passes through the fixing member 521.

[0063] In this embodiment, it should be noted that: a narrow sliding groove 527, aligned with the height direction of the mold, is provided on the outer wall of the fixing member 521. The sliding groove 527 is a through structure, with its inner wall precision-machined and rounded at both ends to reduce stress concentration and frictional resistance. The abutment block 524 is rigidly connected to the locking slider 522. Its body extends out of the fixing member 521 and is located in the sliding groove 527, allowing for linear reciprocating motion. The abutment block 524 and the sliding groove 527 are in clearance fit, with the lateral clearance controlled by the groove width to limit oscillation.

[0064] To ensure smooth movement, the outer surface of the abutment block 524 is provided with an inlet chamfer or roller end. A dustproof lip or thin protective cover can be added at the groove opening to prevent chips and dust from entering. The two end faces of the sliding groove 527 also serve as mechanical stops, limiting the travel boundaries of the abutment block 524.

[0065] The groove length matches the installation position of the abutment block 524, so that it has an effective travel range on the outside for reliable contact with the external trigger, while ensuring that the inner limit position can fully drive the locking slider 522 to retract to the unlock position.

[0066] The abutment block 524 is constrained by the double side walls of the sliding groove 527 and moves only in a straight line along the height direction, which significantly reduces the swaying and jamming caused by off-center load, making the unlocking action smoother and more repeatable.

[0067] The locking slider 522 includes a chamfered surface 528, and the driving block 51 slides along the chamfered surface 528 until it abuts against the side length of the chamfered surface 528.

[0068] In this embodiment, it should be noted that: the working end of the locking component 52 is provided with a beveled surface 528, the beveled surface 528 forms a certain angle with the height direction of the mold and the width direction of the slider, and the beveled surface 528 intersects with two adjacent reference planes to form a clear edge.

[0069] The contact surface of the drive block 51 is a plane that matches the beveled surface 528. During the mold opening motion, the drive block 51 is laterally introduced into the locking area under the narrowing guidance of the guide rail 11, first forming a surface-to-surface sliding contact with the beveled surface 528, and then continuously moving upward / laterally along the beveled surface 528. When the stroke reaches the set endpoint, the end edge of the drive block 51 and the edge of the beveled surface 528 make line-to-line contact, naturally transitioning from sliding contact to a rigid stop. To ensure a smooth transition and wear resistance, the length and included angle of the beveled surface 528 are set according to the stroke and speed of the drive block 51. The beveled surface 528 and its edges are surface-strengthened and chamfered to remove burrs. An inlet chamfer or rounded corner is provided at the entrance of the beveled surface 528 to reduce the initial engagement impact.

[0070] By employing a contact sequence of initial face-to-face contact followed by line stop, the drive block 51 achieves self-guidance and self-correction as it approaches the end position, reducing skewing and lateral edge chipping, resulting in a smoother end transition and less impact. Furthermore, using the edge of the beveled surface 528 as a geometrically defined termination reference achieves a highly repeatable rigid end position, avoiding the drifting caused by assembly errors inherent in traditional planar-to-planar stops. Then, the main friction is distributed on the beveled surface 528, while the end position force is concentrated in the line contact area of ​​the edge, reducing wear and improving stop rigidity and positioning accuracy.

[0071] The limiting device 100 of the slider mechanical core-pulling mold includes a forming slider 60 and a locking ring 70. The forming slider 60 is slidably connected to the fixed template 40 along the width direction F2 of the core-pulling mold, and the forming slider 60 is fixedly connected to the driving block 51. The locking ring 70 is threadedly connected to the fixed template 40, and the locking ring 70 is located in the arc-shaped groove 511.

[0072] In this embodiment, it should be noted that the side of the drive block 51 is machined with an arc-shaped groove 511 that matches its direction of movement. The curvature of the arc-shaped groove 511 is determined by the lateral induction amount at the end of the guide rail 11 and the limiting position at the mold opening end, so that when the drive block 51 is guided into the locking area near the mold opening end, it can smoothly slide relative to the constraint members on the fixed template 40 along the trajectory of the arc-shaped groove 511 and form a fixed posture. To achieve this constraint, a locking ring 70 is provided on the fixed template 40. The locking ring 70 is connected to the fixed template 40 by a thread, and its ring opening extends into and is located in the arc-shaped groove 511 of the drive block 51. The locking ring 70 and the arc-shaped groove 511 together form a ring and groove embedded fit. When the drive block 51 reciprocates along the guide rail 11, the locking ring 70 acts as a guide member and rolls or slides in the arc-shaped groove 511 to guide the movement. The two end faces and transition fillets of the arc-shaped groove 511 serve as the stroke boundary and posture correction surface. When the drive block 51 reaches the mold opening end, the locking ring 70 makes stable contact with the end stop surface of the arc groove 511, thus forming a rigid end position together with the locking assembly 52. ​​During reverse mold closing, the locking ring 70 exits the end stop area along the arc groove 511, releasing the contact with the end stop. To ensure reliable fit, in this embodiment, the insertion amount of the locking ring 70 is preferably finely adjusted by the thread depth to maintain a reasonable lateral clearance and contact length throughout the entire stroke; the bottom surface and sidewall of the arc groove 511 are precision machined and chamfered, and the groove opening and ring opening are arranged opposite each other to avoid jamming and wear caused by the meshing sharp corners.

[0073] The ring and groove of the arc groove 511 and the locking ring 70 are embedded together to provide a composite function of guidance, limit and hold without adding additional hydraulic pressure or complex linkage. The drive block 51 passively enters and stably stops in the locking area at the mold opening end along the set curve, and the end rigidity and repeatability of the positioning are significantly improved.

[0074] In this way, when the mold is closed, the guide 10 moves linearly along the height direction of the core pulling device, and the drive block 51 is laterally guided into the locking area by the narrowing section at the end of the guide rail 11. The locking slider 522 forms a rigid end position, reliably limiting the end point of the core pulling.

[0075] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.

Claims

1. A stopper for a sliding block mechanical core-pulling mold, characterized by comprising: include: A guide component is fixedly connected to a movable template, which slides along the height direction of the core-pulling mold. The drive block is fixedly connected to the template. A limiting mechanism is connected to a fixed template, the limiting mechanism including a driving block slidably connected to the guide member and a locking component slidably connected to the driving block; The guide member is provided with a guide rail along the height direction of the core-pulling mold. The guide rail located at one end of the locking assembly narrows along the width direction of the core-pulling mold. The guide member is in close contact with and slidably connected to the guide rail.

2. The slide mechanical undercut mold limiter according to claim 1, wherein, The locking component includes: The fastener is fixedly connected to the fixed template; The locking slider passes through the fixing member and fits against the fixed template, and slides along the height direction of the core pulling device with the fixed template.

3. The slide mechanical undercut mold limiter according to claim 2, wherein, The locking component further includes: The shrinking component is arranged along the height direction of the core-pulling device, with one end connected to the fixing component and the other end connected to the locking slider; The abutment block is fixedly connected to the locking slider and passes through the outside of the fixing member.

4. The slide mechanical undercut mold limiter according to claim 3, wherein The locking component includes: A rotating shaft is rotatably connected to the fixed component; The reset component has a rotating shaft passing through one end, and the other end of the reset component abuts against the abutting block.

5. The slide mechanical undercut mold limiter according to claim 3, wherein The fastener has a sliding groove, and the abutment block passes through the fastener.

6. The slide mechanical undercut mold limiter according to claim 2, wherein The locking slider includes a chamfered surface, and the driving block slides along the chamfered surface until it abuts against the side length of the chamfered surface.

7. The slide mechanical undercut mold limiter according to claim 3, wherein The retractable component is a spring.

8. The slide mechanical undercut mold limiter according to claim 1, wherein, The limiting device of the slider mechanical core-pulling mold also includes: The forming slider is slidably connected to the fixed template along the width direction of the core-pulling mold and is fixedly connected to the driving block.

9. The slide mechanical undercut mold limiter according to claim 1, wherein, The drive block has an arc-shaped groove.

10. The limiting device for the slider mechanical core-pulling mold according to claim 9, characterized in that... The limiting device of the slider mechanical core-pulling mold further includes: A locking ring is threadedly connected to the fixed template, and the locking ring is located in an arc-shaped groove.

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