A V-type engine block overall core assembling jig and a core assembling method

Abstract

The application provides a V-shaped engine body whole core assembling jig and a core assembling method, and relates to the field of engine casting; in view of the problems of low precision and high operation difficulty in the current V-shaped arrangement dry cylinder liner engine core assembling, the rotary assembly is combined with the side support assembly, the side support assembly forms a guiding moving structure suitable for the inclined state water jacket core assembly, so that the water jacket core assembly can be stably lowered, the rotary assembly can drive the side support assembly and the sand core thereon to rotate and adjust the posture, the core assembly is always in a position convenient for operation, the operation difficulty is reduced, and the sand core structure is protected.

Description

Technical Field

[0001] This invention relates to the field of engine casting, specifically to a V-shaped engine block integral core assembly jig and core assembly method. Background Technology

[0002] For V-type 8-cylinder dry cylinder liner engine blocks, the engine block casting adopts machine core making, manual core assembly, and wet sand molding. There are many types of sand cores and the core assembly process is complicated. The conventional process design is to manually open and close the front and rear cores and manually assemble the water jacket core groups on both sides. Due to the obstruction of the equipment, the inner water jacket core group needs to be manually moved past the position of the outer water jacket core group and then the core is lowered in the opposite direction.

[0003] The water jacket core assembly of the V-shaped engine is tilted. After lifting the water jacket core assembly, it is assembled diagonally downwards, making it difficult to accurately control the angle and speed. This results in collisions between sand cores, and the assembly accuracy cannot be guaranteed. Although there are auxiliary core assembly devices, they mostly move the water jacket sand cores vertically or horizontally. For tilted water jacket sand cores, it is difficult to accurately match the movement direction with the orientation of the water jacket sand cores, resulting in low assembly accuracy. In addition, placing the main core assembly on the core assembly turntable can only ensure that one side of the water jacket core is on the operator's side. The other side of the water jacket core assembly needs to be assembled in reverse, crossing over the main core assembly. During the crossing process, it is easy to collide with the already placed core assembly, which is difficult to operate, poses safety hazards, and can easily damage the sand core structure. Summary of the Invention

[0004] The purpose of this invention is to address the deficiencies of existing technologies by providing a V-shaped integral core assembly jig and core assembly method. The invention combines a rotary component with a side support component. The side support component forms a guide and movement structure adapted to the tilted state of the water jacket core assembly, enabling the water jacket core assembly to be lowered smoothly. The rotary component can drive the side support component and its sand core to rotate and adjust their posture, keeping the core assembly in a position that is easy to operate, reducing the difficulty of operation and protecting the sand core structure.

[0005] The first objective of this invention is to provide a V-shaped integral core assembly jig, which adopts the following solution:

[0006] It includes a slewing assembly, with side support assemblies installed on both sides of the slewing axis of the slewing assembly; the side support assemblies include a tilting slide plate and a load-bearing slider that is slidably connected to the tilting slide plate. The plane where the tilting slide plate is located forms an acute angle with the slewing axis. The load-bearing slider drives the water jacket core assembly to move along the plane where the tilting slide plate is located, so that the movement trajectory of the load-bearing sliders on both sides of the slewing axis forms a V-shape.

[0007] Furthermore, the rotary assembly is slidably connected to an end slider, which can drive the end sand core it carries to move radially along the rotary assembly to combine the end sand core and the water jacket core assembly.

[0008] Furthermore, end sliders are respectively installed on both sides of the rotation axis of the rotary assembly; the end sliders and the load-bearing sliders are respectively connected to a reciprocating drive mechanism.

[0009] Furthermore, the tilting slide is mounted on the rotary assembly via a slide bracket, and the tilt angles of the planes on both sides of the rotary axis corresponding to the tilting slides are equal relative to the rotary axis.

[0010] Furthermore, the inclined slide plate is provided with two parallel slide rails, and the carrying slider cooperates with the slide rails to form a sliding connection with the inclined slide plate.

[0011] Furthermore, a core assembly positioning component is installed on the rotary assembly, which is located between the side support components to support the main core assembly.

[0012] Furthermore, the rotary assembly includes a turntable and a base, with the turntable mounted on the base via a rotating joint, and a side support assembly mounted on the turntable.

[0013] Furthermore, the bearing slider is provided with a positioning block for bearing the water jacket core assembly, and each bearing slider is provided with multiple positioning blocks.

[0014] The second objective of this invention is to provide a method for assembling a V-shaped integral body core assembly jig, comprising:

[0015] The rotating component supports the main core assembly;

[0016] The load-bearing slider on one side of the rotation axis rises along the inclined slide plate, and the load-bearing slider supports a set of water jacket cores. The load-bearing slider then descends along the inclined slide plate.

[0017] When the rotary assembly rotates half a revolution, the bearing slider on the other side of the rotary axis rises along the inclined slide, and the bearing slider supports another set of water jacket cores. The bearing slider then descends along the inclined slide.

[0018] The water jacket core assemblies on both sides of the rotating axis are inserted and spliced ​​with the main core assembly.

[0019] Furthermore, after the main core assembly is assembled with the corresponding water jacket core assembly on both sides of the rotating axis, the end sand cores are inserted from both ends of the main core assembly, so that the water jacket core assembly, the main core assembly and the main core assembly are connected and locked by fasteners.

[0020] Compared with the prior art, the advantages and positive effects of this invention are:

[0021] (1) In view of the problems of low precision and high operation difficulty in the current V-type dry cylinder liner engine core assembly, the rotary component and the side support component are combined. The side support component forms a guide movement structure that adapts to the tilted state of the water jacket core assembly, so that the water jacket core assembly can be lowered smoothly. The rotary component can drive the side support component and its sand core to rotate and adjust the posture, so that the core assembly is always in a position that is easy to operate, reducing the operation difficulty and protecting the sand core structure.

[0022] (2) The water jacket core and the upper cover core are pre-assembled into a water jacket core group, which improves the strength of the water jacket sand core and the dimensional accuracy of the casting; the upper cover core and the front and rear end sand cores adopt a sliding groove matching core head design, which plays a guiding and positioning role; the end slider is driven by the reciprocating drive mechanism to move, and the end sand core is carried to open and close horizontally to realize the core head insertion with the water jacket core group, which solves the problems of wear caused by manual pushing and pulling of sand core, inability to guarantee sand core accuracy, high labor intensity, and low core assembly efficiency.

[0023] (3) The V-shaped body integral core assembly jig has a sliding function that can move along a set tilt angle. The water jacket core assembly is carried by the bearing slider and moves along the tilted slide to complete the core assembly. This solves the problem that the water jacket core assembly on both sides of the V-shaped body cannot be manually guaranteed to have the required tilt direction, which causes sand core collision and poor core assembly accuracy.

[0024] (4) The V-shaped body integral core assembly jig has a rotation function, which meets the limited core assembly operation space of the equipment. By rotating, the posture can be changed to correspond to a position that is easy to operate, thus solving the problem of inconvenient core assembly and difficult operation of the water jacket core assembly on both sides of the V-shaped body. Attached Figure Description

[0025] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0026] Figure 1 This is an exploded view of the components of the V-shaped body integral core jig in Embodiments 1 and 2 of the present invention.

[0027] Figure 2 This is a schematic diagram of the V-shaped body integral core assembly jig in Embodiments 1 and 2 of the present invention.

[0028] Figure 3 This is a schematic diagram of the integral core assembly jig after the sand core is installed in Embodiments 1 and 2 of the present invention.

[0029] The components include: 1. Base; 2. Rotary bearing; 3. Turntable; 4. First end slider; 5. First inclined slide plate; 6. First load-bearing slider; 7. Second load-bearing slider; 8. Second end slider; 9. Second inclined slide plate; 10. Core group positioning assembly; 11. End sand core; 12. Water jacket core group; 13. Main core group; 14. Sand core positioning block; 15. Turntable bracket; 401. First drive cylinder; 402. First stop bar; 403. First guide rail; 601. Side limit block; 501. Third drive cylinder; 502. First slide rail; 801. Second drive cylinder; 802. Second stop bar; 803. Second guide rail; 901. Fourth drive cylinder; 902. Second slide rail; 1001. Core group positioning block. Detailed Implementation

[0030] Dry-liner engine block: refers to an engine block in which the cylinder liners do not directly contact the cooling water, and there is a cast water cavity around the cylinder bore.

[0031] Example 1

[0032] In a typical embodiment of the present invention, such as Figures 1-3 As shown, a V-shaped integral core assembly jig is presented.

[0033] On the one hand, for the engine block of the V-type 8-cylinder dry cylinder liner, the casting of this engine block adopts machine core making, manual core assembly, and wet sand molding. The water jacket core assembly 12 is in an inclined state. During core assembly, it is necessary to assemble the core at a set inclination angle downwards. This process is difficult to accurately control the angle and speed, and there are collision problems between sand cores. For the front sand core and the rear sand core, it is necessary to open and assemble them separately. There are many types of sand cores, the core assembly process is complicated, and it is easy to cause sand core wear, resulting in low dimensional accuracy and directly affecting the quality of the casting.

[0034] On the other hand, the main core assembly 13 is placed on the core assembly turntable, which only allows one side of the water jacket core assembly 12 to be in a position close to the operation. The other side of the water jacket core assembly 12 needs to be lifted and then cross over the main core assembly 13 for reverse assembly, which is difficult to operate and poses a safety hazard.

[0035] Based on this, this embodiment provides a V-shaped engine block integral core assembly jig to solve the core assembly problem of this type of V-shaped dry cylinder liner engine, especially for V-shaped dry cylinder liner engines where the water jacket core assembly 12 is arranged in a 45-degree direction. It can drive the water jacket core assembly 12 to be assembled in a 45-degree direction, the end sand core 11 can be opened and closed to adjust the position, and the overall core assembly can be rotated to adjust the posture, ensuring that the water jacket core assemblies 12 on both sides can be easily assembled, improving the core assembly accuracy and efficiency, and reducing labor intensity and safety hazards.

[0036] The V-shaped integral core jig of this embodiment will now be described in detail with reference to the accompanying drawings.

[0037] See Figure 1The overall core assembly jig mainly includes a base 1, a rotary bearing 2, a turntable 3, a first end slider 4, a first tilting slide plate 5, a first bearing slider 6, a second bearing slider 7, a second end slider 8, a second tilting slide plate 9, a core assembly positioning component 10, and a controller.

[0038] The turntable 3 is mounted on the base 1 via a rotary bearing 2, forming a rotary assembly. The rotary bearing 2 can be replaced and adjusted as needed. A turntable bracket 15 is located below the turntable 3, and the rotary bearing 2 is mounted on the turntable bracket 15, allowing the turntable 3 to rotate relative to the base 1. The first end slider 4 and the second end slider 8 respectively support the end sand core 11, enabling the end sand core 11 to move during core assembly. The first inclined slide plate 5, combined with the first supporting slider 6, forms a side support assembly, and the second inclined slide plate 9, combined with the second supporting slider 7, forms a side support assembly.

[0039] Side support assemblies are installed on both sides of the rotation axis of the rotary assembly. A first side support assembly is installed on one side of the rotation axis to support and drive the water jacket core assembly 12 on one side, and a second side support assembly is installed on the other side to support and drive the water jacket core assembly 12 on the other side. A core assembly positioning assembly 10 is installed on the rotary assembly, located between the first and second side support assemblies. The core assembly positioning assembly 10 is provided with a core assembly positioning block 1001 to support the main core assembly 13.

[0040] As described above, each set of side support components includes a corresponding tilting slide plate and a load-bearing slider that is slidably connected to the tilting slide plate. The plane where the tilting slide plate is located forms an acute angle with the axis of rotation. The load-bearing slider drives the water jacket core assembly 12 to move along the plane where the tilting slide plate is located, so that the movement trajectory of the load-bearing sliders on both sides of the axis of rotation forms a V-shape.

[0041] It is understood that the water jacket core assembly 12 in this embodiment has a 45° orientation, and the plane where the corresponding inclined slide plate is located is at a 45° angle to the axis of rotation, thereby matching the orientation of the water jacket core assembly 12 of the V-type 8-cylinder dry cylinder liner engine.

[0042] like Figure 1 , Figure 2 As shown, the base 1 is positioned and locked to the equipment core turntable. The rotary bearing 2 connects the base 1 and the turntable 3, enabling the turntable 3 to rotate smoothly on the base 1. The internal limit block design ensures the rotation angle. The core group positioning component 10 is fixedly connected to the turntable 3 and can support the main core group 13, ensuring that the main core group 13 is accurately positioned on the V-shaped machine body core jig. The core group positioning component 10 can rotate with the turntable 3 to adjust the posture of the main core group 13 it supports, facilitating the matching of the water jacket core group 12 and the main core group 13.

[0043] The first end slider 4 and the second end slider 8 are respectively mounted on the turntable 3. The first end slider 4 and the second end slider 8 are located at both ends of a diameter of the turntable 3, and the two end sliders are connected to the turntable 3 through sliding pairs. The sliding pairs can be selected according to requirements, such as linear bearings, guide rail slider mechanisms, etc.

[0044] Taking the use of linear bearings as an example, each end slider is mounted on turntable 3 by two sets of linear bearings, and each end slider is connected to a drive mechanism, such as a cylinder or electric cylinder.

[0045] When linear bearings are used as the sliding pair of the end slider, the end slider is driven by a cylinder to move on two sets of linear bearings. The cylinder, through extension and retraction, drives the end slider and the end sand core 11 to reciprocate, which can drive the end sand core 11 to insert into the main core assembly 13 near the center position. When a slide rail slider mechanism is used as the sliding pair of the end slider, the bottom of the first end slider 4 cooperates with the first guide rail 403 set on the turntable 3, and the bottom of the second end slider 8 cooperates with the second guide rail 803 set on the turntable 3.

[0046] Correspondingly, the first end slider 4 is equipped with a first drive cylinder 401, and the first end slider 4 is provided with a first stop rod 402 for supporting and positioning the end sand core 11; the second end slider 8 is equipped with a second drive cylinder 801, and the second end slider 8 is provided with a second stop rod 802 for supporting and positioning the end sand core.

[0047] The first and second side support components are fixed to the turntable 3, each equipped with a drive mechanism and a sliding pair. The sliding pair can be a slide rail slider mechanism. The tilting slide is mounted to the rotary assembly via a slide bracket. The tilting slide has two parallel slide rails, and the carrying slider cooperates with the slide rails to form a sliding connection with the tilting slide. The tilt angles of the planes on both sides of the rotary axis corresponding to the tilting slides are equal with respect to the rotary axis, matching the V-type engine body.

[0048] The drive mechanism of the side support assembly can be a cylinder, an electric cylinder, etc., and the moving pair can also be a linear bearing. The cylinder drives the bearing slider to move back and forth along the linear bearing. In this embodiment, a third drive cylinder 501 is installed on the first inclined slide plate 5. The output end of the third drive cylinder 501 is connected to the first bearing slider 6, so that the first bearing slider 6 slides back and forth along the first slide rail 502 set on the first inclined slide plate. A fourth drive cylinder 901 is installed on the second inclined slide plate 9. The output end of the fourth drive cylinder 901 is connected to the second bearing slider 7, so that the second bearing slider 7 slides back and forth along the second slide rail 902 set on the second inclined slide plate. Side limit blocks 601 are respectively provided at both ends of the movement trajectory of the bearing slider to position the working position of the bearing slider and ensure the core assembly accuracy.

[0049] The bearing slider is provided with a sand core positioning block 14 for supporting the water jacket core assembly 12. Each bearing slider is provided with multiple sand core positioning blocks 14. The shape of the sand core positioning block 14 is adapted to the water jacket core assembly 12 and is used for positioning and supporting the water jacket core assembly 12.

[0050] The end slider and the load-bearing slider are respectively connected to a reciprocating drive mechanism. When a cylinder is used as the reciprocating drive mechanism, the controller is connected to three sets of solenoid valves to control the reciprocating motion of the four cylinders. The first end slider 4 and the second end slider 8 share a set of air circuit drive and are controlled by the same solenoid valve to achieve synchronous action. The drive cylinder of the first side support assembly and the drive cylinder of the second side support assembly are respectively connected to a set of solenoid valves. The controller is connected to an external control switch to control the action of each solenoid valve.

[0051] Taking a V-type 8-cylinder dry cylinder liner engine block as an example, the water jacket core assembly 12 on both sides of the V-type engine block needs to be strictly aligned with a 45-degree direction. In this embodiment, the inclined slide plate is configured with an angle of 45° with the axis of the turntable 3. The bearing slider can slide along the inclined slide plate with a 45° angle. The bearing slider carries the water jacket core assembly 12 to complete the core assembly, which can avoid the sand core collision caused by manual operation and ensure the core assembly accuracy.

[0052] like Figure 3 As shown, the water jacket core assembly 12 and the end sand core 11 need to be horizontally inserted for core assembly. Manual pushing and pulling of the sand core results in wear between the sand core and the jig, which cannot guarantee the accuracy of the sand core, and is labor-intensive and has low core assembly efficiency. By using an end slider to support the translation of the end sand core 11, the end sand core 11 and the water jacket core assembly 12 can be matched, resulting in no wear on the sand core and high core assembly efficiency.

[0053] Due to the limited operating space for core assembly, it is impossible to ensure that both sides of the V-shaped machine body are on the operator's side, making manual core assembly of the inner water jacket core assembly 12 difficult. The rotary bearing 2, in conjunction with the turntable 3, enables the side support components, core assembly positioning components 10, and the sand core they support to rotate horizontally. After completing the core assembly of one side of the water jacket core assembly 12, it can rotate 180° to assemble the core assembly of the other side of the water jacket core assembly 12. Both sides of the V-shaped machine body are in the optimal operating position for the operator.

[0054] Example 2

[0055] In another typical embodiment of the present invention, such as Figures 1-3 As shown, a method for assembling a V-shaped integral body core jig is presented.

[0056] Combination Figures 1-3 The core assembly method includes:

[0057] Rotary component bearing main core assembly 13;

[0058] The load-bearing slider on one side of the rotation axis rises along the inclined slide plate, and the load-bearing slider supports a set of water jacket core groups 12. The load-bearing slider descends along the inclined slide plate.

[0059] When the rotary assembly rotates half a revolution, the bearing slider on the other side of the rotary axis rises along the inclined slide plate, and the bearing slider supports another set of water jacket core group 12. The bearing slider then descends along the inclined slide plate.

[0060] The water jacket core assembly 12 on both sides of the rotating axis is inserted and spliced ​​with the main body core assembly 13;

[0061] The end sand cores 11 are inserted into both ends of the main core assembly 13 to connect the water jacket core assembly 12, the main core assembly 13 and the main core assembly 13, and then locked with fasteners.

[0062] Combination Figure 1 , Figure 2 , Figure 3 The assembly method of the integral core assembly jig is described in detail in conjunction with Example 1.

[0063] The V-shaped body integral core assembly fixture is rotated into the robot operation area along with the core assembly turntable. At this time, the first end slider 4, the second end slider 8, the first bearing slider 6 and the second bearing slider 7 are all in the closed state.

[0064] The component robot grasps the main core assembly 13 and places it on the core assembly positioning assembly 10 of the V-shaped body integral core assembly jig;

[0065] The core assembly turntable rotates out of the guardrail, and the operation controller turns on the end slider control switch. The front sand core opens with the first end slider 4, and the rear sand core opens with the second end slider 8.

[0066] Turn on the control switch corresponding to the first bearing slider 6, and the third drive cylinder 501 drives the first bearing slider 6 to rise along the first slide rail 502. The operator lifts the left water jacket core assembly 12 and places it on the sand core positioning block 14 of the first bearing slider 6. Turn off the switch of the first bearing slider 6 of the controller, and the left water jacket core assembly 12 falls down along the first slide rail 502 at a 45-degree angle with the first bearing slider 6 to complete the core assembly of the left water jacket core assembly 12.

[0067] Turntable 3 drives the core assembly to rotate until the second side support component on the right is on the operator's side. Turn on the switch corresponding to the second bearing slider 7. The fourth drive cylinder 901 drives the second bearing slider 7 to rise along the second slide rail 902. The operator lifts the right water jacket core assembly 12 and places it on the sand core positioning block 14 of the second bearing slider 7. Turn off the second bearing slider 7 switch of the controller. The left water jacket core assembly 12 falls along the second slide rail 902 at a 45-degree angle with the second bearing slider 7 to complete the core assembly of the right water jacket core assembly 12.

[0068] When the controller closes the end slider control switch, the front sand core moves with the first end slider 4, and the rear sand core moves with the second end slider 8. The movement completes the insertion of the water jacket core, the top cover core, the first end sand core 11, and the second end sand core 11, and the core assembly is locked with bolts as locking elements.

[0069] Rotate turntable 3 to reset and lock the V-shaped machine body core assembly jig. The whole machine then moves into the guardrail with the turntable, where the robot grabs the core assembly; the next core assembly process begins.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A V-shaped integral core assembly jig, characterized in that, It includes a rotary assembly, and side support assemblies are installed on both sides of the rotary axis of the rotary assembly. The side support assemblies include an inclined slide plate and a load-bearing slider that is slidably connected to the inclined slide plate. The plane where the inclined slide plate is located forms an acute angle with the rotary axis. The load-bearing slider drives the water jacket core assembly to move along the plane where the inclined slide plate is located, so that the movement trajectory of the load-bearing sliders on both sides of the rotary axis forms a V-shape. The rotary assembly is slidably connected to an end slider, which can drive the end sand core it carries to move radially along the rotary assembly to combine the end sand core and the water jacket core assembly. The rotary assembly has end sliders installed on both sides of the rotation axis. The planes on both sides of the rotation axis corresponding to the inclined slide plates have equal inclination angles relative to the rotation axis. The end slider and the load-bearing slider are respectively connected to a reciprocating drive mechanism. The tilting slide is installed on the rotary assembly through a slide bracket. The tilt angles of the planes on both sides of the rotary axis corresponding to the tilting slide are equal with respect to the rotary axis. The tilting slide is provided with two parallel slide rails. The load-bearing slider cooperates with the slide rails to form a sliding connection with the tilting slide. The rotary assembly is equipped with a core group positioning component, which is located between the side support components to support the main core group. The rotary assembly includes a turntable and a base. The turntable is mounted on the base via a rotating joint, and the side support components are mounted on the turntable. The carrying slider is provided with a positioning block for supporting the water jacket core group, and each carrying slider is provided with multiple positioning blocks.

2. A method for assembling a V-shaped integral body core assembly jig as described in any one of claims 1, characterized in that, include: The rotating component supports the main core assembly; The load-bearing slider on one side of the rotation axis rises along the inclined slide plate, and the load-bearing slider supports a set of water jacket cores. The load-bearing slider then descends along the inclined slide plate. When the rotary assembly rotates half a revolution, the bearing slider on the other side of the rotary axis rises along the inclined slide, and the bearing slider supports another set of water jacket cores. The bearing slider then descends along the inclined slide. The water jacket core assemblies on both sides of the rotating axis are inserted and spliced ​​with the main core assembly.

3. The core assembly method as described in claim 2, characterized in that, After the main core assembly is assembled with the corresponding water jacket core assembly on both sides of the rotating axis, the end sand cores are inserted from both ends of the main core assembly to connect the water jacket core assembly, the main core assembly and the main core assembly, and then locked with fasteners.

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