Circulating loading and unloading device for inserts in die casting

Abstract

The invention relates to the technical field of die-casting manufacturing, in particular to a cyclic loading and unloading device for inserts in die-casting, which comprises an insert clamping component and an aluminum alloy die-casting die for the inserts in the die-casting, the insert clamping assembly is connected to the upper portion of the aluminum alloy die-casting table through a supporting frame, and the supporting frame drives the insert clamping assembly to move to a preset position through a guide rail arranged at the bottom to complete cyclic loading and unloading of inserts. The insert clamping assembly comprises a clamp frame and a clamp body. The clamp body is connected to the inner wall of the middle of the clamp frame. The insert is arranged between the pressing plates of the clamp body, the U-shaped structure of the clamp frame provides rigid support, the clamp body clamps the insert from the center position, loading and unloading circulation is achieved, the automatic circulation loading and unloading efficiency is improved by 300%, the takt time reaches two times per minute, and continuous die-casting production is supported.

Description

Technical Field

[0001] This invention relates to the field of die casting manufacturing technology, specifically to a device for the cyclic loading and unloading of inserts in die casting. Background Technology

[0002] Inlays refer to the technique of embedding one material into another through physical or chemical means to form a fixed structure or decorative effect. Precision components (such as positioning pins and wear-resistant blocks) embedded in molds are used to repair molds or optimize molding effects.

[0003] In the field of automotive die casting, inserts (such as cylinder block inserts and threaded sleeves) need to be pre-formed in a mold and integrally molded with aluminum alloy. Traditional technology has three major drawbacks: low efficiency of manual loading and unloading: the speed of manual placement of inserts is ≤0.5 times / minute, resulting in a 30% delay in the die casting cycle; insufficient positioning accuracy: the offset error of inserts is >±0.5mm, resulting in a porosity of up to 18% in the casting; and rapid equipment wear: frequent loading and unloading leads to wear of the fixtures, which need to be replaced every 5000 mold cycles.

[0004] Although existing automated devices (such as CN203610641U) use robotic arms for gripping, they lack fine-tuning and buffering structures, and still suffer from problems such as positioning drift and surface damage to inserts. Summary of the Invention

[0005] To address the problems in existing technologies, this invention provides a cyclic loading and unloading device for inserts in die casting. This application enables fine-tuning of the lateral position (within ±20mm range), adapts to molds of different sizes, and allows adjustment of inserts at different positions. The insert positioning adjustment and mold changeover time is reduced from 30 minutes to 3 minutes. The adjustment accuracy is ±0.05mm, and the cylinder head insert position qualification rate is increased from 70% to 99%.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a cyclic loading and unloading device for inserts in die casting, including an insert clamping assembly and an aluminum alloy die casting mold for inserts in die casting; The insert clamping assembly is connected to the aluminum alloy die-casting table via a support frame. The support frame moves the insert clamping assembly to a preset position via a guide rail at the bottom to complete the cyclic loading and unloading of the insert. The insert clamping assembly includes a clamp frame and a clamping body; The fixture frame is U-shaped, and the fixture body is connected to the inner wall in the middle of the fixture frame.

[0007] Preferably, the inner wall of the fixture frame has a limiting groove, and the limiting groove has a side opening and a top opening; a stabilizing rod is fixedly connected in the limiting groove; the fixture frame includes an adjusting support, and the adjusting support is slidably sleeved on the outer wall of the stabilizing rod. One end of the adjusting support extends into the side wall opening of the limiting groove.

[0008] Preferably, a locking bolt is provided through the upper opening of the limiting groove, and the threaded part of the locking bolt extends through the upper opening of the limiting groove into the adjusting support and is threadedly connected to the adjusting support. The locking bolt is positioned at one end outside the limit groove and abuts against the fixture frame.

[0009] Preferably, a rotating frame is movably provided at the middle of one end of the adjusting support extending outside the limiting groove, and an air valve for controlling clamping is provided on the top of the rotating frame, and an air cylinder is fixedly connected to one side of the rotating frame.

[0010] Preferably, the cylinder is fixedly connected to a connecting block at multiple segments, with fixing plates extending from both ends of the connecting block, and a pressure plate fixedly connected to one side of the connecting block.

[0011] Preferably, the pressure plate is made of an elastic material.

[0012] Preferably, a spring is fixedly connected between the pressure plate and the fixing plate.

[0013] Preferably, the air valves located on the top of two adjacent sets of rotating frames are connected by a control air pipe; An electrically controlled air pump is fixedly installed on the top of the fixture frame, and the air pump is connected to a control air pipe.

[0014] Preferably, a guide rod is fixedly connected to the end of the clamp frame, and a built-in rack is provided on the lower surface of the guide rod. Brackets are slidably provided on both sides of the support frame, and the brackets are connected to the guide rod by a limiting ring.

[0015] Preferably, electrically controlled push rods are fixedly connected to both sides of the support frame, the telescopic ends of the electrically controlled push rods are fixedly connected to the bottom of the bracket, a drive motor is fixedly connected to one side of the bracket, and the output end of the drive motor extends to the middle of the bracket and is fixedly connected to a gear. The gear meshes with the built-in rack.

[0016] The beneficial effects of this invention are: (1) The present invention provides a cyclic loading and unloading device for inserts in die casting, which places the insert between the pressure plates of the clamping body. The "U"-shaped structure of the clamping frame provides rigid support. The clamping body clamps the insert from the center position to realize the loading and unloading cycle. The automated cyclic loading and unloading efficiency is increased by 300%, and the cycle time reaches 2 times / minute (the traditional manual disassembly is only 0.5 times / minute), supporting continuous die casting production.

[0017] (2) The circulating loading and unloading device for inserts in die casting described in this invention allows the adjusting support to slide along the stabilizing rod in the limiting groove and extend through the side wall opening to achieve fine-tuning of the lateral position (within ±20mm range). It is adaptable to molds of different sizes and can adjust inserts at different positions, reducing the insert positioning and adjustment changeover time from 30 minutes to 3 minutes. The adjustment accuracy is ±0.05mm, and the cylinder head insert position qualification rate is increased from 70% to 99%. Attached Figure Description

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

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the support frame of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle; Figure 4 This is a three-dimensional structural diagram of the insert clamping assembly of the present invention; Figure 5 For the present invention Figure 4 Axis view; Figure 6 This is a schematic diagram of the three-dimensional structure of the clamp frame of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the clamping device of the present invention; Figure 8 This is a diagram showing the connection between the adjusting support and the rotating frame of the present invention.

[0020] In the diagram: 100, aluminum alloy die-casting table; 200, aluminum alloy die-casting mold; 500, Support frame; 510, Guide rail; 520, Electrically controlled push rod; 530, Drive motor; 540, Gear; 550, Limit ring; 600. Insert clamping assembly; 610. Guide rod; 611. Built-in rack; 620. Fixture frame; 621. Air pump; 622. Limiting groove; 640. Fixture body; 641. Adjusting support; 642. Locking bolt; 643. Rotating frame; 644. Air valve; 645. Air cylinder; 646. Fixing plate; 647. Connecting block; 648. Pressure plate; 649. Control air pipe; 650. Spring. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments. Example

[0022] like Figures 1-8As shown, a circulating loading and unloading device for inserts in die casting according to the present invention includes an insert clamping assembly 600 and an aluminum alloy die casting mold 200 for inserts in die casting. The insert clamping assembly 600 is connected above the aluminum alloy die-casting table 100 via the support frame 500. The support frame 500 drives the insert clamping assembly 600 to a preset position via the guide rail 510 at the bottom to complete the cyclic loading and unloading of the insert. The insert clamping assembly 600 includes a clamp frame 620 and a clamp body 640; The fixture frame 620 is U-shaped, and the fixture body 640 is connected to the inner wall of the middle part of the fixture frame 620.

[0023] The fixture frame 620 is U-shaped and can hold two sets of inserts at the same time, improving installation and disassembly efficiency. The support frame 500 moves along the guide rail 510, which drives the fixture frame 620 to move to the preset position to install and disassemble the inserts.

[0024] The inner wall of the fixture frame 620 is provided with a limiting groove 622, and the limiting groove 622 is provided with a side opening and a top opening; a stabilizing rod is fixedly connected in the limiting groove 622; the fixture frame 620 includes an adjusting support 641, which is slidably sleeved on the outer wall of the stabilizing rod. One end of the adjusting support 641 extends into the side wall opening of the limiting groove 622.

[0025] The insert is placed between the pressure plates 648 of the fixture body 640. The "U"-shaped structure of the fixture frame 620 provides rigid support. The fixture body 640 clamps the insert from the center position, realizing a loading and unloading cycle. During the installation of the insert, multiple sets of inserts are clamped by the pressure plates 648. The mold opens, and the fixture frame 620 transports the insert to the preset position of the mold. Then, it is inserted downward into the lower mold and released. The fixture body 640 moves out, and the upper mold presses down to die-cast the part. After die-casting is completed, the upper mold is lifted, and the fixture body 640 is used again to hold multiple sets of inserts, while assisting in demolding. After the part and insert are clamped to the conveyor belt position, the worker presses down on the part to separate the insert from the two parts. Then, the fixture frame 620 moves back to the preset position to realize the cyclical use of the insert.

[0026] Automated cyclic loading and unloading efficiency is increased by 300%, with a cycle time of 2 times / minute (compared to only 0.5 times / minute for traditional manual disassembly), supporting continuous die-casting production. Daily production capacity of automotive cylinder heads has increased from 800 to 2400 pieces. The adjusting support 641 slides along the stabilizing rod within the limiting groove 622 and extends through the side wall opening, enabling fine-tuning of the lateral position (±20mm range). It adapts to molds of different sizes and can adjust inserts in different positions, reducing insert positioning and adjustment changeover time from 30 minutes to 3 minutes. Adjustment accuracy is ±0.05mm, and the cylinder head insert position qualification rate has increased from 70% to 99%.

[0027] As a technical optimization solution of the present invention, referring to the figures, Figure 7 As shown: A locking bolt 642 is provided through the upper opening of the limiting groove 622. The threaded part of the locking bolt 642 extends through the upper opening of the limiting groove 622 and into the adjusting support 641, where it is threadedly connected to the adjusting support 641. The locking bolt 642 has one end outside the limiting groove 622 that abuts against the fixture frame 620.

[0028] The locking bolt 642 can fix the adjusting support 641, prevent the clamp frame 620 from shifting laterally during clamping, and ensure the stability of the clamping insert.

[0029] The locking bolt 642 is nickel-plated (20μm thick), and the guide rod 610 is made of GCr15 bearing steel, with a wear resistance life of 30,000 cycles and a wear cycle extended by 6 times. After tightening, it abuts against the fixture frame (620) to generate an 80N preload force. It is resistant to vibration and displacement, with a displacement of ≤0.01mm under mold closing impact (compared to >0.5mm for traditional structures).

[0030] Data example: Preload test shows zero loosening under 15Hz vibration environment.

[0031] As a technical optimization of the present invention, reference is made to... Figure 7 , Figure 8 As shown: A rotating frame 643 is movably installed at the middle of one end of the adjusting support 641 that extends outside the limiting groove 622. A valve 644 for controlling clamping is installed on the top of the rotating frame 643. A cylinder 645 is fixedly connected to one side of the rotating frame 643.

[0032] The rotating frame 643 can rotate at a certain angle, and the angle can be adjusted in conjunction with the position of the insert in the mold. After adjustment, it can be fixed by the nut on one side.

[0033] The adjusting support 641 can slide along the inner wall of the limiting groove 622, thereby achieving the purpose of adjusting the position of the insert. The rotating frame 643 can rotate 180° to clamp different inserts and adapt to different mold tilt angles.

[0034] Data: Adjustment range ±15°, suitable for irregularly shaped parts such as cylinder heads and shock absorber towers; changeover time reduced to 3 minutes. Multi-angle adaptation for irregularly shaped parts, supports die casting of cylinder head oblique holes. Example data: Rotation adjustment takes 5 seconds, while traditional robotic arms require 120 seconds for repositioning.

[0035] As a technical optimization of the present invention, reference is made to... Figure 7 , Figure 8 As shown: The cylinder 645 is fixedly connected to a connecting block 647 at multiple points. Both ends of the connecting block 647 extend into a fixing plate 646. A pressure plate 648 is fixedly connected to one side of the connecting block 647.

[0036] The pressure plate 648 is made of elastic material.

[0037] The pressure plate 648 is made of elastic metal material, which can increase the release area with the insert through deformation, and can also conduct heat faster. The connecting block 647 supports the pressure plate 648. Under the push of the cylinder 645, the pressure plate 648 clamps the insert.

[0038] As a technical optimization of the present invention, reference is made to... Figure 7 Figure 8 As shown: A spring 650 is fixedly connected between the pressure plate 648 and the fixing plate 646.

[0039] The air valve 644 activates the cylinder 645, which pushes the connecting block 647 to clamp the insert with the elastic pressure plate 648. The spring 650 (stiffness 40N / mm) between the pressure plate 648 and the fixed plate 646 provides a buffering force to prevent the insert from deforming. The clamping force is evenly distributed, and the damage rate of the insert is reduced from 15% to <1%.

[0040] Spring 650 connects pressure plate 648 and fixing plate 646, with stiffness coefficient of 45N / mm and compression stroke of 8mm. When clamping the insert, the upper and lower ends of pressure plate 648 can deform and make progressive contact with the insert, which can evenly distribute the clamping force. Under the action of spring 650, the two ends of pressure plate 648 are tightly connected to the insert, preventing the insert from loosening.

[0041] As a technical optimization of the present invention, reference is made to... Figure 6 , Figure 7 , Figure 8 As shown, the air valves 644 installed on the top of the two adjacent sets of rotating frames 643 are connected by control air pipes 649; An electrically controlled air pump 621 is fixedly installed on the top of the fixture frame 620, and the air pump 621 is connected to the control air pipe 649.

[0042] The electronically controlled air pump 621 synchronously drives multiple sets of air valves 644 via the control air pipe 649, controlling a 4-position cylinder; batch loading and unloading of multiple inserts is achieved, increasing the cycle time to 2 times / minute. For example, synchronous installation of 4 cylinder head inserts takes 2 seconds (traditional series operation takes 8 seconds). The electronically controlled air pump 621 can control the air pressure of multiple sets of air valves 644, controlling the extension and retraction of the 4 cylinders 645 to clamp the inserts.

[0043] Basically the same as in Example 1, as shown in the figure. Figure 1-4 As shown, the difference is that: a guide rod 610 is fixedly connected to the end of the clamp frame 620, and a built-in rack 611 is provided on the lower surface of the guide rod 610. A bracket is slidably provided on both sides of the support frame 500, and the bracket is connected to the guide rod 610 through a limiting ring 550.

[0044] The support frame 500 is fixedly connected to both sides with an electric control push rod 520. The telescopic end of the electric control push rod 520 is fixedly connected to the bottom of the bracket. The support frame is fixedly connected to one side with a drive motor 530. The output end of the drive motor 530 extends to the middle of the bracket and is fixedly connected to a gear 540. Gear 540 meshes with built-in rack 611.

[0045] By controlling the output of the drive motor 530 to rotate, the output of the drive motor 530 can drive the gear 540 to rotate. When the gear 540 rotates, it drives the guide rod 610 to move through the built-in rack 611, thereby moving the fixture frame 620 out of the mold. The guide rod 610 can be limited by the limiting ring 550. After the fixture frame 620 is completely removed from the mold, the support frame 500 drives the fixture frame 620 and the clamped insert along the guide rail 510 to move to the preset position to complete the cyclic loading and unloading of the insert. After being clamped to the preset position, the height of the fixture frame 620 can be controlled by the electric push rod 520 to facilitate the disassembly of the parts and inserts.

[0046] Traditional technical indicators Indicators of this invention Progress Manual loading and unloading: 0.5 times / minute Loading / unloading cycle: 2 times / minute Efficiency increased by 300% Changeover time: 30 minutes Changeover time: 3 minutes Changeover efficiency increased by 90% Adjustment accuracy: ±1mm Fine-tuning accuracy: ±0.05mm Accuracy increased by 95% Vibration displacement: >0.5mm Displacement: ≤0.01mm Stability increased by 98% Bolt loosening rate: 12 times / thousand molds Ten thousand molds, zero loosening. Stability increased by 98% Location taking time: 120 seconds Adjustment time: 5 seconds Speed ​​increased by 96% Compressive injury rate: 15% Compressive injury rate: <1% Yield rate increased to 93%. Brittle component breakage rate: 25% Breakage rate: 0 Yield rate increased to 93%. The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circulating loading and unloading device for inserts in die casting, characterized in that: Includes an insert clamping assembly (600) and an aluminum alloy die-casting mold (200) for inserts in die casting. The insert clamping assembly (600) is connected above the aluminum alloy die-casting table (100) via a support frame (500). The support frame (500) drives the insert clamping assembly (600) to a preset position via a guide rail (510) at the bottom to complete the cyclic loading and unloading of the insert. The insert clamping assembly (600) includes a clamp frame (620) and a clamp body (640). The fixture frame (620) is U-shaped, and the fixture body (640) is connected to the inner wall of the middle part of the fixture frame (620).

2. The circulating loading and unloading device for inserts in die casting according to claim 1, characterized in that: The clamp frame (620) has a limiting groove (622) on its inner wall, and the limiting groove (622) has a side opening and a top opening; a stabilizing rod is fixedly connected in the limiting groove (622); the clamp frame (620) includes an adjusting support (641), and the adjusting support (641) is slidably sleeved on the outer wall of the stabilizing rod; One end of the adjusting support (641) extends into the side wall opening of the limiting groove (622).

3. The circulating loading and unloading device for inserts in die casting according to claim 1, characterized in that: A locking bolt (642) is provided through the upper opening of the limiting groove (622). The threaded part of the locking bolt (642) extends through the upper opening of the limiting groove (622) into the adjusting support (641) and is threadedly connected to the adjusting support (641). The locking bolt (642) is positioned outside the limiting groove (622) and abuts against the fixture frame (620).

4. A circulating loading and unloading device for inserts in die casting according to claim 3, characterized in that: The adjusting support (641) extends to the outside of the limiting groove (622) and a rotating frame (643) is movably provided in the middle of one end. The top of the rotating frame (643) is provided with an air valve (644) for controlling clamping, and a cylinder (645) is fixedly connected to one side of the rotating frame (643).

5. A circulating loading and unloading device for inserts in die casting according to claim 4, characterized in that: The cylinder (645) is fixedly connected to a connecting block (647) at multiple stages. Both ends of the connecting block (647) extend out of a fixing plate (646). A pressure plate (648) is fixedly connected to one side of the connecting block (647).

6. A circulating loading and unloading device for inserts in die casting according to claim 5, characterized in that: The pressure plate (648) is made of an elastic material.

7. A circulating loading and unloading device for inserts in die casting according to claim 5, characterized in that: A spring (650) is fixedly connected between the pressure plate (648) and the fixing plate (646).

8. A circulating loading and unloading device for inserts in die casting according to claim 7, characterized in that: The air valves (644) installed on the top of the two adjacent sets of rotating frames (643) are connected by control air pipes (649); An electrically controlled air pump (621) is fixedly installed on the top of the fixture frame (620), and the air pump (621) is connected to the control air pipe (649).

9. A circulating loading and unloading device for inserts in die casting according to claim 3, characterized in that: The clamp frame (620) is fixedly connected to a guide rod (610) at its end. The lower surface of the guide rod (610) is provided with a built-in rack (611). The support frame (500) is slidably provided with brackets on both sides. The brackets are connected to the guide rod (610) above by a limiting ring (550).

10. A circulating loading and unloading device for inserts in die casting according to claim 9, characterized in that: The support frame (500) is fixedly connected to both sides with an electric control push rod (520). The telescopic end of the electric control push rod (520) is fixedly connected to the bottom of the bracket. A drive motor (530) is fixedly connected to one side of the bracket. The output end of the drive motor (530) extends to the middle of the bracket and is fixedly connected to a gear (540). The gear (540) meshes with the built-in rack (611).

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