A universal core clamp with multi-cylinder linkage
By designing a universal lower core clamp with multiple cylinders, the problems of low production efficiency and high cost caused by replacing a special lower core clamp in the prior art are solved, and the adaptation of multiple models is achieved, which improves production efficiency and reduces costs.
Patent Information
- Application Number
- CN202420695054.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-04-07
AI Technical Summary
In the production of existing iron sand covering process casting cylinder block blanks, special core clamps need to be replaced, resulting in long production replacement time, large labor consumption, low production efficiency and high cost, and limited the production of multiple models in line.
A multi-cylinder linkage universal lower core clamp is designed to adjust the positioning pin distance through horizontal distance adjustment of the cylinder, positioning cylinder and locking cylinder, so as to achieve adaptation to various models without changing the clamp.
It greatly reduces production and model replacement time, reduces employee labor consumption, improves production efficiency, reduces production costs, and supports multiple models of parallel production.
Smart Images
Figure CN222740218U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of casting technology, specifically relating to a multi-cylinder linkage universal lower core clamp. Background Technology
[0002] In the production process of cylinder block blanks using the iron mold sand casting process, after the cylinder block sand cores are assembled, coated, and baked, a special core-setting jig is needed to precisely place the sand core assembly into the lower mold box during the core-setting process. Then, the next process of box assembly, pouring, box opening, and cleaning are carried out to complete the blank production process.
[0003] The current iron mold sand coating process for producing cylinder block blanks has the following problems:
[0004] 1. The current production line produces three types of machines with significant size differences. Each type of machine requires a new core clamping fixture, which takes about 3 hours to change. This results in significant labor costs for employees, affects production efficiency, and increases production costs.
[0005] 2. Because a special core clamping fixture needs to be replaced, multiple models cannot be arranged for parallel production, which limits the solution to improve efficiency through parallel production of multiple models. Summary of the Invention
[0006] To address the problems existing in the prior art, this utility model provides a multi-cylinder linkage universal lower core fixture, aiming to reduce production changeover time, reduce employee labor consumption, improve production efficiency, and reduce production costs.
[0007] To achieve the above objectives, the specific solution of this utility model is as follows:
[0008] A multi-cylinder linkage universal core-lowering fixture includes a floating frame, a fixture support, a clamping cylinder, grippers, and a cylinder body core-lowering positioning mechanism. The floating frame is movably connected to the fixture support via guide pins. Gripper limiting frames are symmetrically arranged on both sides of the bottom of the fixture support. Each gripper limiting frame has gripper fixing frames symmetrically arranged at both ends. The two grippers are respectively clamped and pass through the gripper limiting frames, and each gripper's ends are slidably connected to the gripper fixing frames. The clamping cylinder is installed at the bottom of the fixture support, and the clamping cylinder push rod is connected to the grippers. Support frames are provided on both sides of the floating frame perpendicular to the gripper direction, and each support frame contains a core-lowering mechanism. The cylinder body has a lower core positioning mechanism, which includes a horizontal distance adjusting cylinder, a slider, a positioning pin, a positioning cylinder, and a locking cylinder. The horizontal distance adjusting cylinder is installed on the outside of the floating frame, and the push rod of the horizontal distance adjusting cylinder is connected to the outer side of the slider, which is slidably connected to the support frame. One side of the slider is provided with a positioning groove, and the other side is provided with a corresponding locking hole. The positioning pin is fixed to the bottom of the slider. The positioning cylinder and the locking cylinder are respectively installed at both ends of the floating frame. The push rod of the positioning cylinder is connected to a positioning rod that can be movably inserted into the positioning groove, and the locking cylinder is connected to a locking rod that can be movably inserted into the locking hole.
[0009] Furthermore, it also includes a control panel, which is mounted on the fixture bracket, and the horizontal distance adjustment cylinder, clamping cylinder, positioning cylinder and locking cylinder are respectively connected to the control panel.
[0010] Furthermore, the control panel includes an A button, a B button, and a C button. The A button is used to control the positioning pin to the outermost position in the horizontal direction; the B button is used to control the positioning pin to the middle position in the horizontal direction; and the C button is used to control the positioning pin to the innermost position in the horizontal direction.
[0011] Furthermore, three locking holes are arranged side by side.
[0012] Furthermore, the floating frame is provided with a lifting shaft at each end.
[0013] Advantages of this utility model
[0014] This utility model provides a multi-cylinder linkage universal core-lowering fixture. By adjusting the distance of the positioning pin through the linkage of multiple cylinders, including a horizontal distance adjustment cylinder, a positioning cylinder, and a locking cylinder, the core-lowering fixture can be used without replacement. It can be used for core lowering of cylinder bodies of three types and multiple models, and can also arrange the parallel production of cylinder bodies of multiple models. This significantly reduces production changeover time, reduces labor consumption, improves production efficiency, and reduces production costs. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of a universal lower core clamp for multi-cylinder linkage.
[0016] Figure 2 for Figure 1 A schematic diagram of the structure from below.
[0017] Figure 3 for Figure 1 A schematic diagram of the front structure.
[0018] Figure 4 for Figure 1 A schematic diagram of the side structure.
[0019] Figure 5 for Figure 1 A top-view structural diagram.
[0020] Figure 6 for Figure 1 A schematic diagram of the lower core positioning mechanism of the middle cylinder block.
[0021] Figure 7 for Figure 6 A schematic diagram of the side structure of the middle slider near the positioning bar.
[0022] Figure 8 for Figure 7 A schematic diagram of the side structure of the middle slider near the locking bar.
[0023] In the picture:
[0024] 1. Fixture bracket; 2. Horizontal distance adjustment cylinder; 3. Clamping cylinder; 4. Gripper; 5. Positioning pin; 6. Positioning cylinder; 601. Positioning rod; 7. Locking cylinder; 701. Locking rod; 8. Control panel; 9. Guide pin; 10. Floating frame; 11. Slider; 111. Positioning groove; 112. Locking hole; 12. Support frame; 13. Hanging shaft; 14. Gripper limit frame; 15. Gripper fixing frame. Detailed Implementation
[0025] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be noted that the specific embodiments are not intended to limit the scope of the invention.
[0026] like Figures 1 to 8This specific embodiment provides a multi-cylinder linkage universal lower core clamp, which includes a floating frame 10, a clamp bracket 1, a clamping cylinder 3, grippers 4, a cylinder body lower core positioning mechanism, and a control panel 8. Two lifting shafts 13 are respectively provided on both sides of the floating frame 10, and guide pins 9 are provided on the floating frame 10, allowing the clamp bracket 1 to be movably sleeved on the floating frame 10 via the guide pins 9. Gripper limiting frames 14 are symmetrically provided on both sides of the bottom of the clamp bracket 1, and gripper fixing frames 15 are symmetrically provided at both ends of each gripper limiting frame 14. The two grippers 4 are respectively clamped and pass through the gripper limiting frame 14, and both ends of each gripper 4 are slidably connected to the gripper fixing frame 15. The clamping cylinder 3 is installed at the bottom of the clamp bracket 1, and the push rod of the clamping cylinder 3 is connected to the gripper 4. The floating frame 10 is perpendicular to the direction of the gripper 4 on both sides. A support frame 12 is provided, and a cylinder lower core positioning mechanism is installed in each side of the support frame 12. The cylinder lower core positioning mechanism includes a horizontal distance adjustment cylinder 2, a slider 11, a positioning pin 5, a positioning cylinder 6, and a locking cylinder 7. The horizontal distance adjustment cylinder 2 is installed on the outside of the floating frame 10, and the push rod of the horizontal distance adjustment cylinder 2 is connected to the outer side of the slider 11, which is slidably connected to the support frame 12. One side of the slider 11 is provided with a positioning groove 111, and the other side is provided with three parallel locking holes 112 at the corresponding position. The positioning pin 5 is fixed to the bottom of the slider 11. The positioning cylinder 6 and the locking cylinder 7 are respectively installed at both ends of the floating frame 10. The push rod of the positioning cylinder 6 is connected to a positioning rod 601 that can be movably inserted into the positioning groove 111, and the locking cylinder 7 is connected to a locking rod 701 that can be movably inserted into the locking hole 112.
[0027] The control panel 8 is mounted on the clamp bracket 1, and the horizontal distance adjustment cylinder 2, clamping cylinder 3, positioning cylinder 6 and locking cylinder 7 are respectively connected to the control panel 8.
[0028] Specifically, the control panel 8 includes buttons A, B, and C.
[0029] The A key is used to control the position of the locating pin to the outermost horizontal position, so as to adapt to the cylinder block core lowering requirements of models with the outermost horizontal distance. The function of key A is to send a cylinder signal by pressing key A, controlling the positioning cylinders 6 on both sides of the floating frame 10 to push the positioning rods 601 out of the positioning grooves 111 of the slider 11. Then, the horizontal distance adjustment cylinders 2 on both sides of the floating frame 10 are controlled to push the positioning pins 5 on the two sliders 11 to the outermost position in the horizontal direction. Finally, the locking cylinders 7 on both sides of the floating frame 10 are controlled to push the locking rods 701 into the outermost locking holes 112 on the sliders 11. Through the linkage of positioning cylinders 6, horizontal distance adjustment cylinders 2 and locking cylinders 7, the positioning pins 5 on both sides of the floating frame 10 are adjusted to the outermost position in the horizontal direction to meet the core positioning requirements of cylinder bodies with large size differences in various machine models. Finally, the clamping cylinder 3 is controlled to push the clamping jaws 4 to move inward to clamp the sand core assembly. The core unloading machine of the production line moves the multi-cylinder linkage universal core unloading fixture of this specific embodiment to the core unloading station to unload the core and complete the core unloading work.
[0030] Key B is used to control the position of locating pin 5 to the middle of the horizontal direction, so as to adapt to the cylinder block core lowering requirements of models with a middle horizontal distance. The function of the B key is to send a cylinder signal by pressing the B key, which controls the positioning cylinders 6 on both sides of the floating frame 10 to push the positioning rods 601 out of the positioning grooves 111 of the slider 11. Then, the horizontal distance adjustment cylinders 2 on both sides of the floating frame 10 are controlled to push the positioning pins 5 on the two sliders 11 to the middle position in the horizontal direction. Finally, the locking cylinders 7 on both sides of the floating frame 10 are controlled to push the locking rods 701 into the locking holes 112 in the middle position on the sliders 11. Through the linkage of the positioning cylinders 6, the horizontal distance adjustment cylinders 2 and the locking cylinders 7, the positioning pins 5 on both sides of the floating frame 10 are adjusted to the middle position in the horizontal direction to meet the positioning requirements of cylinder bodies with large size differences in various machine models. Finally, the clamping cylinder 7 is controlled to push the clamping jaws 4 to move inward to clamp the sand core assembly. The core unloading machine of the production line moves the multi-cylinder linkage universal core unloading fixture of this specific embodiment to the core unloading station to unload the core and complete the core unloading work.
[0031] The C key is used to control the position of the locating pin to the innermost horizontal position, so as to adapt to the cylinder block core lowering requirements of models with the innermost horizontal distance. The function of key C is to send a cylinder signal by pressing key B, controlling the positioning cylinders 6 on both sides of the floating frame 10 to push the positioning rods 601 out of the positioning grooves 111 of the slider 11. Then, the horizontal distance adjustment cylinders 2 on both sides of the floating frame 10 are controlled to push the positioning pins 5 on the two sliders 11 to the innermost position in the horizontal direction. Finally, the locking cylinders 7 on both sides of the floating frame 10 are controlled to push the locking rods 701 into the innermost locking holes 112 on the sliders 11. Through the linkage of positioning cylinders 6, horizontal distance adjustment cylinders 2 and locking cylinders 7, the positioning pins 5 on both sides of the floating frame 10 are adjusted to the innermost position in the horizontal direction to meet the positioning requirements of cylinder bodies with large size differences in various machine models. Finally, the clamping cylinder 3 is controlled to push the clamping jaws 4 to move inward to clamp the sand core assembly. The core unloading machine of the production line moves the multi-cylinder linkage universal core unloading fixture of this specific embodiment to the core unloading station to unload the core and complete the core unloading work.
[0032] Working principle:
[0033] In the initial state, the positioning cylinder 6 is in the extended state, pushing the positioning rod 601 on the positioning cylinder 6 push rod into the positioning slide groove 111. The horizontal distance adjustment cylinder 2 and the locking cylinder 7 are in the retracted state. During use, select the position of the positioning pin 5 according to the model of the cylinder body lower core. If the positioning pin is in the outermost position for the model of the cylinder body lower core, press the A key on the control panel 8 to send a cylinder signal to control the positioning cylinder 6 to retract. The positioning cylinder 6 push rod drives the positioning rod 601 to disengage from the positioning slide groove 111. Control the horizontal distance adjustment cylinder 2 to retract, driving the positioning pin 5 on the slider 11 to the outermost position. At the same time, control the locking cylinder 7 to extend, driving the locking rod 701 to engage with the outermost locking hole 112 on the slider 11. Finally, control the clamping cylinder 4 to extend, and the clamping cylinder 3 push rod drives the jaw 4 to clamp the sand core assembly. If the positioning pin of the lower core of the cylinder body is in the middle position, press the B key on the control panel 8 to send a cylinder signal to control the positioning cylinder 6 to retract. The positioning cylinder 6 push rod drives the positioning rod 601 to disengage from the positioning slide groove 111. Control the horizontal distance adjustment cylinder 2 to retract, drive the positioning pin 5 on the slider 11 to the middle position. At the same time, control the locking cylinder 7 to extend, drive the locking rod 701 to lock into the locking hole 112 in the middle of the slider 11. Finally, control the clamping cylinder 7 to extend, and the clamping cylinder 7 push rod drives the jaw 4 to clamp the sand core assembly. If the positioning pin of the lower core of the cylinder body is in the innermost position, press the C key on the control panel 8 to send a cylinder signal to control the positioning cylinder 6 to retract. The positioning cylinder 6 push rod drives the positioning rod 601 to disengage from the positioning slide groove 111. Control the horizontal distance adjustment cylinder 2 to retract, driving the positioning pin 5 on the slider 11 to the innermost position. At the same time, control the locking cylinder 7 to extend, driving the locking rod 701 to lock into the innermost locking hole 112 on the slider 11. Finally, control the clamping cylinder 3 to extend, and the clamping cylinder 3 push rod drives the jaw 4 to clamp the sand core assembly.
Claims
1. A multi-cylinder linkage universal core clamp, characterized in that: It includes a floating frame, a clamp bracket, a clamping cylinder, a clamping claw and a cylinder body lower core positioning mechanism. The floating frame is movably connected to the clamp bracket through a guide pin. Clamping claw limit frames are symmetrically arranged on both sides of the bottom of the clamp bracket. Clamping claw fixing frames are symmetrically arranged at both ends of each clamping claw limit frame. The two clamping claws are respectively inserted into the clamping claw limit frame in a clamping state, and the two ends of each clamping claw are respectively slidably connected to the clamping claw fixing frame. The clamping cylinder is installed at the bottom of the clamp bracket, and the clamping cylinder push rod is connected to the clamping claw. Support frames are respectively arranged on both sides of the floating frame perpendicular to the direction of the clamping claw, and a cylinder body lower core positioning frame is installed in each support frame. Positioning mechanism, the cylinder body lower core positioning mechanism includes a horizontal distance adjustment cylinder, a slider, a positioning pin, a positioning cylinder and a locking cylinder. The horizontal distance adjustment cylinder is installed on the outside of the floating frame, and the push rod of the horizontal distance adjustment cylinder is connected to the outer side of the slider. The slider is slidably connected in the support frame. A positioning groove is provided on one side of the slider, and a locking hole is provided at a corresponding position on the other side. The positioning pin is fixed at the bottom of the slider. The positioning cylinder and the locking cylinder are respectively installed at both ends of the floating frame. The push rod of the positioning cylinder is connected with a positioning rod that can be movably inserted into the positioning groove, and the locking cylinder is connected with a locking rod that can be movably inserted into the locking hole.
2. The multi-cylinder linkage universal core clamp according to claim 1, characterized in that: It also includes a control panel, which is installed on the fixture bracket, and the horizontal distance adjustment cylinder, the clamping cylinder, the positioning cylinder and the locking cylinder are respectively connected to the control panel.
3. The multi-cylinder linkage universal core clamp according to claim 2, characterized in that: The control panel includes A key, B key and C key, wherein the A key is used to control the positioning pin to the outermost position in the horizontal direction; the B key is used to control the positioning pin to the middle position in the horizontal direction; and the C key is used to control the positioning pin to the innermost position in the horizontal direction.
4. The multi-cylinder linkage universal core clamp according to claim 1, characterized in that: The locking holes are arranged in three parallel rows.
5. The multi-cylinder linkage universal core clamp according to claim 1, characterized in that: Both ends of the floating frame are respectively provided with hanging shafts.