Mold knockout plate counterbalance guide post

Abstract

The utility model relates to the field of balanced guide pillar, especially a mould ejection plate balanced guide pillar. Including the chassis, the top plate, two round rods and the board changing device, the upper end surface fixed connection frame of chassis, the upper end surface fixed connection of frame has the hydraulic cylinder, the output fixed connection of hydraulic cylinder has the upper die holder, the upper end surface fixed connection of chassis has the lower die holder, the top plate is located the position of lower die holder corresponding upper die holder, the lower surface of top plate and the both sides of lower die holder abut, the top plate is fixed with two round rods with the aid of board changing device and connects, the lower end inner wall of chassis is equipped with the jacking device, the jacking device includes two air cylinders, the lower surface of air cylinder and chassis fixed connection, the output end sliding of air cylinder penetrates fixed frame, the section of fixed frame is'U' shape. The utility model provides a kind of mould ejection plate balanced guide pillar with the advantage that the workpiece formed by processing can be smoothly ejected.

Description

Technical Field

[0001] This utility model relates to the field of balance guide pillars, and in particular to a balance guide pillar for a mold ejection plate. Background Technology

[0002] The ejector plate balance guide pillar is a crucial component in injection molds, primarily used to ensure smooth movement of the ejector plate during ejection and resetting, preventing tilting or jamming. The guide pillar provides linear guidance for the ejector plate, ensuring the ejection mechanism moves parallel to the mold opening direction. The main body consists of guide pillars, fixing components, and auxiliary components.

[0003] Existing technologies, such as the utility model patent with publication number CN204320980U, disclose a mold guide pillar, comprising a cylindrical guide pillar body with chamfered ends, an annular groove on the guide pillar body, an elastic retaining ring fitted within the groove, and a heat dissipation through hole along the axial direction. This utility model facilitates installation and disassembly, significantly reducing labor and improving efficiency. Simultaneously, it reduces wear on the mold guide pillar itself, extending its service life. Furthermore, it ensures timely heat dissipation during operation.

[0004] When stamping workpieces with a die, if an ejector plate is not used to eject the workpiece, the workpiece will not be able to fall off by itself due to the friction between the stamped workpiece and the die cavity wall, relying only on gravity or slight vibration. The operator needs to manually remove the workpiece, which greatly reduces production efficiency and increases labor intensity. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that when stamping workpieces with a mold, without using an ejector plate to eject the workpiece, the workpiece after stamping is subject to friction between the workpiece and the cavity wall of the die. The workpiece usually cannot be detached by itself by gravity or slight vibration alone, and the operator needs to manually remove the workpiece, which greatly reduces production efficiency and increases labor intensity.

[0006] To solve the above technical problems, this utility model provides a mold ejector plate balance guide post, including: a base frame, a top plate, two round rods, and a plate changing device. A frame is fixedly connected to the upper surface of the base frame, and a hydraulic cylinder is fixedly connected to the upper surface of the frame. An upper mold base is fixedly connected to the output end of the hydraulic cylinder. A lower mold base is fixedly connected to the upper surface of the base frame. The top plate is located at a position corresponding to the upper mold base, and its lower surface abuts against both sides of the lower mold base. The top plate is fixedly connected to the two round rods via the plate changing device. A lifting device is provided on the lower inner wall of the base frame, and the lifting device includes two pneumatic... The cylinder has its lower surface fixedly connected to the base frame. A fixed frame slides through the output end of the cylinder. The fixed frame has a U-shaped cross-section. The lower surface of the fixed frame is fixedly connected to the base frame. An extrusion block is fixedly connected to the output end of the cylinder. The arc surface of the round rod slides through the fixed frame. A movable seat is fixedly connected to the lower end of the round rod. A roller is rotatably connected to the inner wall of the movable seat. A guide groove is provided on the extrusion block corresponding to the position of the roller. The inner wall of the guide groove is slidably connected to the roller. A spring is sleeved on the arc surface of the round rod. The two ends of the spring are fixedly connected to the movable seat and the fixed frame, respectively.

[0007] The effect achieved by the above components is as follows: the hydraulic cylinder drives the upper die seat to press downwards. When it is necessary to eject the stamped workpiece, the cylinder is activated, so that the output end of the cylinder pushes the extrusion block to move. While the roller moves in the guide groove, the roller moves upwards, taking the round rod upwards and pushing the top plate upwards. This achieves the ejection effect. Then the cylinder is closed, the extrusion block moves in the opposite direction, and under the action of gravity and the elastic force of the spring, the roller slides along the guide groove and moves downwards. The round rod and the moving seat also move downwards, and the top plate moves downwards until the top plate abuts against the base frame.

[0008] Preferably, a friction pad is fixedly connected to the inner wall of the guide groove, and the friction pad is an anti-slip pad.

[0009] The effect achieved by the above components is that the friction pad increases friction, which can prevent the roller from slipping in the guide groove.

[0010] Preferably, a slider is fixedly connected to the lower surface of the extrusion block, and a groove is provided on the fixing frame at the position of the slider, and the inner wall of the groove is slidably connected to the slider.

[0011] The effect achieved by the above components is that the extrusion block moves along the slider in the groove when it moves, thus achieving a limiting effect.

[0012] Preferably, a guide rod slides through the interior of the fixing frame, and the upper end of the guide rod is fixedly connected to the top plate.

[0013] The effect achieved by the above components is that when the top plate moves, the guide rod slides along the fixed frame, thus playing a guiding role.

[0014] Preferably, the plate changing device includes two connecting blocks and two sleeves. The upper surface of the connecting block is fixedly connected to the top plate, and the lower surface of the connecting block is fixedly connected to a connecting block. The lower surface of the sleeve is fixedly connected to a round rod. A fixing plate is fixedly connected to the inner wall of the sleeve. A carrier plate is fixedly connected to the upper end of the fixing plate. The upper surface of the carrier plate abuts against the connecting block. A screw is rotatably passed through the inner wall of the fixing plate. The two ends of the arc surface of the screw have threads with opposite directions. Both ends of the arc surface of the screw have rings threaded through them. The arc surface of the ring is rotatably connected to a movable ring. The arc surface of the movable ring is slidably connected to the sleeve. A locking block is fixedly connected to the side of the two movable rings that are close to each other. The connecting block has a locking hole at the position corresponding to the locking block. The inner wall of the locking hole engages with the locking block. A limit block is fixedly connected to the arc surface of the movable ring. A limit groove is opened at the position corresponding to the limit block on the sleeve. The inner wall of the limit groove is slidably connected to the limit block.

[0015] The effect achieved by the above components is as follows: When the top plate is needed, first rotate the screw to make the collar move away from the connecting block with the moving ring. At the same time, the limiting block slides in the limiting groove to guide the movement. When the moving ring moves, the locking block moves with it, so that the locking block does not engage with the locking hole. Then, remove the top plate, place the connecting block on the new top plate on the carrier plate, align the locking hole on the top plate with the locking block, and then rotate the screw in the opposite direction to make the collar move with the moving ring. At the same time, the locking block moves with it, so that the locking block is inserted into the locking hole, the connecting block is fixed, and the top plate is fixed.

[0016] Preferably, a crank handle is fixedly connected to one end of the screw, and the crank handle has a circular cross-section.

[0017] The effect achieved by the above components is that the screw can be turned with the help of a crank handle, making it more convenient and efficient.

[0018] Preferably, the lower end of the connecting block is fixedly connected to two insert rods, and the sleeve has a limiting hole at the position corresponding to the insert rod, and the inner wall of the limiting hole is engaged with the insert rod.

[0019] The effect achieved by the above components is that when a new top plate needs to be replaced, the connecting block on the top plate can be placed on the carrier plate, and the locking hole on the top plate can be aligned with the locking block by inserting the rod into the limiting hole, which is more convenient.

[0020] Compared with related technologies, the mold ejector plate balance guide post provided by this utility model has the following advantages:

[0021] Beneficial effects:

[0022] When using a hydraulic cylinder to press the upper die seat onto a workpiece, and then ejecting the stamped workpiece, two cylinders are activated. The output ends of the cylinders push the extrusion block to move. The extrusion block, along with the slider, moves along the slide groove. The rollers slide within the guide groove of the extrusion block, and simultaneously, the rollers are pushed upwards, moving the moving seat and the round rod upwards, which in turn pushes the top plate upwards, causing the top plate to eject the workpiece. Then, the cylinders are closed, causing the extrusion block to move in the opposite direction. Under the action of gravity and the spring force, the rollers slide along the guide groove and move downwards, while the round rod and the moving seat also move downwards, moving the top plate downwards until it contacts the machine frame. By operating the lifting device, the formed workpiece is lifted.

[0023] When a new top plate needs to be replaced, turn the crank handle to move the collar and moving ring away from the connecting block. At the same time, the limiting block slides along the limiting groove, and the locking block moves away from the locking hole. Then remove the top plate and replace it with a new one. First, insert the insertion rod into the limiting hole, while the connecting block abuts against the carrier plate. Then, turn the crank handle in the opposite direction to move the collar and moving ring closer to the connecting block. At the same time, the locking block moves along with it and inserts into the locking hole, thus fixing the connecting block. By operating the plate replacement device, the effect of replacing the top plate is achieved. Attached Figure Description

[0024] Figure 1 A schematic diagram of the structure of a mold ejection plate balance guide post provided by this utility model;

[0025] Figure 2 for Figure 1 The diagram shows the structure of the side view;

[0026] Figure 3 for Figure 1 The diagram shows the structure of the lifting device.

[0027] Figure 4 for Figure 1 The diagram shows the structure of the plate changing device.

[0028] Figure 5 for Figure 4 A partial structural schematic diagram of the plate changing device is shown;

[0029] Figure 6 for Figure 4 A schematic diagram of the internal structure of the plate changing device shown.

[0030] Figure 7 for Figure 6 The enlarged view of point A shown;

[0031] Figure 8 for Figure 4 The cross-sectional view of the plate changing device is shown.

[0032] The following are the labeling elements in the diagram: 1. Base frame; 2. Frame; 3. Hydraulic cylinder; 4. Top plate; 5. Upper mold base; 6. Lower mold base; 7. Lifting device; 701. Fixed frame; 702. Cylinder; 703. Extrusion block; 704. Guide groove; 705. Friction pad; 706. Roller; 707. Moving seat; 708. Slide groove; 709. Sliding block; 710. Round rod; 711. Spring; 712. Guide rod; 8. Plate changing device; 801. Connecting block; 802. Connecting block; 803. Insert rod; 804. Locking hole; 805. Sleeve; 806. Limiting hole; 807. Fixed plate; 808. Screw; 809. Carrier plate; 810. Collar; 811. Moving ring; 812. Locking block; 813. Handle; 814. Limiting groove; 815. Limiting block. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0034] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0035] Please see Figures 1 to 7 The present invention provides a mold ejector plate balance guide column, comprising: a base frame 1, a top plate 4, two round rods 710 and a plate changing device 8. A frame 2 is fixedly connected to the upper surface of the base frame 1, and a hydraulic cylinder 3 is fixedly connected to the upper surface of the frame 2. An upper mold base 5 is fixedly connected to the output end of the hydraulic cylinder 3. A lower mold base 6 is fixedly connected to the upper surface of the base frame 1. The top plate 4 is located at the position of the lower mold base 6 corresponding to the upper mold base 5. The lower surface of the top plate 4 abuts against the two sides of the lower mold base 6. The top plate 4 is fixedly connected to the two round rods 710 by means of the plate changing device 8. A lifting device 7 is provided on the lower inner wall of the base frame 1.

[0036] In the embodiments of this utility model, please refer to Figure 2 and Figure 3The lifting device 7 includes two cylinders 702. The lower surface of the cylinders 702 is fixedly connected to the base frame 1. The output end of the cylinders 702 slides through a fixed frame 701. The fixed frame 701 has a U-shaped cross section. The lower surface of the fixed frame 701 is fixedly connected to the base frame 1. The output end of the cylinders 702 is fixedly connected to a pressing block 703. The arc surface of the round rod 710 slides through the fixed frame 701. The lower end of the round rod 710 is fixedly connected to a movable seat 707. The inner wall of the movable seat 707 is rotatably connected to a roller 706. The pressing block 703 has a guide groove 704 corresponding to the position of the roller 706. The inner wall of the guide groove 704 is slidably connected to the roller 706. The arc surface of the round rod 710 is fitted with a spring 711. The two ends of the spring 711 are fixedly connected to the movable seat 707 and the fixed frame 701, respectively. Hydraulic cylinder 3 drives upper die base 5 to press downwards. When it is necessary to eject the stamped workpiece, cylinder 702 is activated, causing the output end of cylinder 702 to push the extrusion block 703 to move. While roller 706 moves within guide groove 704, it also moves upwards, carrying the round rod 710 upwards and pushing the top plate 4 upwards, thus achieving the ejection effect. Then, cylinder 702 is closed, and extrusion block 703 moves in the opposite direction. Under the action of gravity and the elastic force of spring 711, roller 706 slides along guide groove 704 while moving downwards. The round rod 710 and moving seat 707 also move downwards, and the top plate 4 moves downwards until it abuts against base frame 1. A friction pad 705 is fixedly connected to the inner wall of guide groove 704. The friction pad 705 is an anti-slip pad. The friction pad 705 increases friction and prevents roller 706 from slipping within guide groove 704. A slider 709 is fixedly connected to the lower surface of the extrusion block 703. A groove 708 is provided in the fixing frame 701 corresponding to the position of the slider 709, and the inner wall of the groove 708 is slidably connected to the slider 709. When the extrusion block 703 moves, it carries the slider 709 within the groove 708, serving as a limiting mechanism. A guide rod 712 slides through the interior of the fixing frame 701, and the upper end of the guide rod 712 is fixedly connected to the top plate 4. When the top plate 4 moves, the guide rod 712 slides along the fixing frame 701, serving as a guide.

[0037] In the embodiments of this utility model, please refer to Figures 4 to 8The plate changing device 8 includes two connecting blocks 801 and two sleeves 805. The upper surface of the connecting block 801 is fixedly connected to the top plate 4, and the lower surface of the connecting block 801 is fixedly connected to the connecting block 802. The lower surface of the sleeve 805 is fixedly connected to the round rod 710. The inner wall of the sleeve 805 is fixedly connected to the fixing plate 807, and the upper end of the fixing plate 807 is fixedly connected to the carrier plate 809. The upper surface of the carrier plate 809 abuts against the connecting block 802. The inner wall of the fixing plate 807 is rotatably penetrated by a screw 808. The two ends of the arc surface of the screw 808 are provided with threads in opposite directions. Each end of the arc surface is threaded with a collar 810. The arc surface of the collar 810 is rotatably connected to a movable ring 811. The arc surface of the movable ring 811 is slidably connected to the sleeve 805. Each of the two movable rings 811 is fixedly connected to a locking block 812 on the side closest to each other. The connecting block 802 has a locking hole 804 at the position corresponding to the locking block 812. The inner wall of the locking hole 804 is engaged with the locking block 812. The arc surface of the movable ring 811 is fixedly connected to a limiting block 815. The sleeve 805 has a limiting groove 814 at the position corresponding to the limiting block 815. The inner wall of the limiting groove 814 is slidably connected to the limiting block 815. When the top plate 4 is needed, first rotate the screw 808, causing the collar 810 to move the moving ring 811 away from the connecting block 802. Simultaneously, the limiting block 815 slides in the limiting groove 814, acting as a guide. As the moving ring 811 moves, the locking block 812 moves along with it, thus preventing the locking block 812 from engaging with the locking hole 804. Then, remove the top plate 4 and place the connecting block 802 from the new top plate 4 onto the carrier plate 809. Align the locking hole 804 on the top plate 4 with the locking block 812. Then, rotate the screw 808 in the opposite direction, causing the collar 810 to move the moving ring 811. Simultaneously, the locking block 812 moves along with it, inserting into the locking hole 804. The connecting block 802 is then fixed, thus fixing the top plate 4. A crank handle 813 with a circular cross-section is fixedly connected to one end of the screw 808. The crank handle 813 can be used to rotate the screw 808, making it more convenient and efficient. Two insert rods 803 are fixedly connected to the lower end of the connecting block 801. The sleeve 805 has a limiting hole 806 corresponding to the position of the insert rod 803. The inner wall of the limiting hole 806 is engaged with the insert rod 803. When a new top plate 4 needs to be replaced, when the connecting block 802 on the top plate 4 is placed on the carrier plate 809, the insert rod 803 can be inserted into the limiting hole 806 to align the locking hole 804 on the top plate 4 with the locking block 812, which is more convenient.

[0038] The working principle of the mold ejection plate balance guide column provided by this utility model is as follows: When the upper mold base 5 is used to press the workpiece with the hydraulic cylinder 3, and the workpiece needs to be ejected, the two cylinders 702 are activated, so that the output end of the cylinder 702 pushes the extrusion block 703 to move. The extrusion block 703 moves the slider 709 along the slide groove 708. The roller 706 slides in the guide groove 704 of the extrusion block 703. At the same time, the roller 706 is pushed upward, moving the moving seat 707 and the round rod 710 upward, pushing the top plate 4 upward, so that the top plate 4 ejects the workpiece. Then the cylinder 702 is closed, so that the extrusion block 703 moves in the opposite direction. Under the action of gravity and the elastic force of the spring 711, the roller 706 slides along the guide groove 704 and moves downward. The round rod 710 and the moving seat 707 also move downward, moving the top plate 4 downward, so that the top plate 4 abuts against the frame. By operating the lifting device 7, the function of lifting the formed workpiece is achieved.

[0039] When a new top plate 4 needs to be replaced, turn the crank handle 813 to move the collar 810, along with the moving ring 811, away from the connecting block 802. At the same time, the limiting block 815 slides along the limiting groove 814, and the locking block 812 moves away from the locking hole 804. Then, remove the top plate 4 and replace it with a new one. First, insert the insertion rod 803 into the limiting hole 806, while the connecting block 802 abuts against the carrier plate 809. Then, turn the crank handle 813 in the opposite direction to move the collar 810, along with the moving ring 811, closer to the connecting block 802. At the same time, the locking block 812 moves along with it and inserts into the locking hole 804. In this way, the connecting block 802 can be fixed. By operating the plate replacement device 8, the effect of replacing the top plate 4 is achieved.

[0040] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A mold ejector plate balance guide post, characterized in that, include: The base frame (1), top plate (4), two round rods (710), and plate changing device (8) are provided. The upper surface of the base frame (1) is fixedly connected to a frame (2). The upper surface of the frame (2) is fixedly connected to a hydraulic cylinder (3). The output end of the hydraulic cylinder (3) is fixedly connected to an upper mold base (5). The upper surface of the base frame (1) is fixedly connected to a lower mold base (6). The top plate (4) is located at the position of the lower mold base (6) corresponding to the upper mold base (5). The lower surface of the top plate (4) abuts against the two sides of the lower mold base (6). The top plate (4) is fixedly connected to the two round rods (710) by means of the plate changing device (8). The lower inner wall of the base frame (1) is provided with a lifting device (7). The lifting device (7) includes two cylinders (702). The lower surface of the cylinders (702) is fixedly connected to the base frame (1). The output of the cylinders (702) is... A fixed frame (701) is slidably passed through the outlet end. The fixed frame (701) has a "U" shaped cross section. The lower surface of the fixed frame (701) is fixedly connected to the base frame (1). An extrusion block (703) is fixedly connected to the output end of the cylinder (702). The arc surface of the round rod (710) is slidably passed through the fixed frame (701). A movable seat (707) is fixedly connected to the lower end of the round rod (710). A roller (706) is rotatably connected to the inner wall of the movable seat (707). A guide groove (704) is opened on the extrusion block (703) corresponding to the position of the roller (706). The inner wall of the guide groove (704) is slidably connected to the roller (706). A spring (711) is sleeved on the arc surface of the round rod (710). The two ends of the spring (711) are fixedly connected to the movable seat (707) and the fixed frame (701) respectively.

2. The mold ejector plate balance guide post according to claim 1, characterized in that, The inner wall of the guide groove (704) is fixedly connected with a friction pad (705), which is an anti-slip pad.

3. A mold ejector plate balance guide post according to claim 1, characterized in that, The lower surface of the extrusion block (703) is fixedly connected to a slider (709), and the fixing frame (701) is provided with a groove (708) corresponding to the position of the slider (709). The inner wall of the groove (708) is slidably connected to the slider (709).

4. A mold ejector plate balance guide post according to claim 1, characterized in that, The guide rod (712) slides through the inside of the fixing frame (701), and the upper end of the guide rod (712) is fixedly connected to the top plate (4).

5. A mold ejector plate balance guide post according to claim 1, characterized in that, The plate changing device (8) includes two connecting blocks (801) and two sleeves (805). The upper surface of the connecting block (801) is fixedly connected to the top plate (4), and the lower surface of the connecting block (801) is fixedly connected to a connecting block (802). The lower surface of the sleeve (805) is fixedly connected to a round rod (710). A fixing plate (807) is fixedly connected to the inner wall of the sleeve (805). A carrier plate (809) is fixedly connected to the upper end of the fixing plate (807). The upper surface of the carrier plate (809) abuts against the connecting block (802). A screw (808) rotatably passes through the inner wall of the fixing plate (807). The two ends of the arc surface of the screw (808) are provided with threads in opposite directions. Both ends of the sleeve are threaded through a collar (810). The collar (810) is rotatably connected to a movable ring (811). The movable ring (811) is slidably connected to the sleeve (805). The two movable rings (811) are fixedly connected to a locking block (812) on the side close to each other. The connecting block (802) has a locking hole (804) at the position corresponding to the locking block (812). The inner wall of the locking hole (804) is engaged with the locking block (812). The movable ring (811) is fixedly connected to a limiting block (815). The sleeve (805) has a limiting groove (814) at the position corresponding to the limiting block (815). The inner wall of the limiting groove (814) is slidably connected to the limiting block (815).

6. A mold ejector plate balance guide post according to claim 5, characterized in that, One end of the screw (808) is fixedly connected to a crank handle (813), and the cross-section of the crank handle (813) is circular.

7. A mold ejector plate balance guide post according to claim 5, characterized in that, The lower end of the connecting block (801) is fixedly connected to two insert rods (803). The sleeve (805) has a limiting hole (806) at the position corresponding to the insert rod (803). The inner wall of the limiting hole (806) is engaged with the insert rod (803).

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