Cylinder core group screwless locking lower core clamp

Abstract

The utility model discloses a kind of cylinder core group screwless locking lower core clamps, including fixture frame, fixture frame includes square panel, the front of panel is connected with square frame, the left and right sides of panel are provided with the first clamping plate of sliding connection, the first clamping plate is used to clamp the side plate core of left and right sides, the inside of first clamping plate is equipped with the first clamping protrusion for the limit slot of side plate core, the front and rear of panel are provided with the second clamping plate of sliding connection, the second clamping plate is used to clamp the cylinder top cylinder bottom both sides of cylinder core group before and after, the inside of second clamping plate is equipped with the second clamping protrusion for the limit slot of cylinder core group before and after two sides, and is connected with. By mechanical clamping device multidirectional clamping positioning is carried out to sand core, without screw, realize the "screwless" of sand core assembly process, effectively avoid the loss and rework caused by screw deformation in high temperature environment, improve economy.

Description

Technical Field

[0001] This utility model belongs to the technical field of diesel engine cylinder block casting, and specifically relates to a screwless locking clamp for cylinder block core assembly. Background Technology

[0002] In the casting process of diesel engine cylinder blocks, to ensure accurate shape and position and structural stability of the sand cores during pouring, multiple core blocks typically need to be assembled and positioned. Traditional core assembly methods generally involve fastening the various sand core components (such as the main core and side plate cores) together using core assembly screws. However, this method has the following problems in actual production: First, under high-temperature pouring conditions, the screws are prone to deformation and twisting, resulting in low reusability and increased material consumption and cost. Second, the placement of the screws in the core assembly restricts the freedom of the pouring process, easily leading to casting defects. Furthermore, the sand cores rely on the screws for overall locking during assembly, handling, and placement; improper operation or screw failure can easily cause core misalignment or disintegration, affecting the quality of the final casting.

[0003] As casting processes become more efficient and automated, there is an urgent need for a core assembly fixture that can replace the traditional screw locking method. This fixture would enable reliable clamping and positioning of core assemblies without the use of screws, ensuring core assembly accuracy and stability while reducing casting costs and improving production efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a screwless locking clamp for cylinder core assembly.

[0005] The technical solution adopted by this utility model is a screwless locking clamp for cylinder core assembly, including a clamp frame. The clamp frame includes a square panel. A core lowering machine connecting frame is installed on the back of the panel. A square frame is connected around the front of the panel. A positioning guide sleeve is provided in the middle of the front and rear sides of the lower end of the square frame. A positioning guide pin for positioning with a sand box is provided in the middle of the left and right sides of the lower end of the square frame. A first clamping plate is slidably connected on the left and right sides of the panel. The first clamping plate is used to clamp the side plate cores on the left and right sides. A first clamping protrusion is provided on the inner side of the first clamping plate for engaging the upper limit groove of the side plate core. A second clamping plate is slidably connected on the front and rear sides of the panel. The second clamping plate is used to clamp the cylinder top and bottom sides of the cylinder core assembly. A second clamping protrusion is provided on the inner side of the second clamping plate for engaging the upper limit groove of the front and rear sides of the cylinder core assembly.

[0006] Furthermore, the first clamping plate and the second clamping plate extend to the top of the panel through the strip hole opened on the panel. The first clamping plate and the second clamping plate are controlled by a clamping mechanism. The clamping mechanism includes sleeves set at both ends of the upper part of the first clamping plate and the second clamping plate. Support frames are set on both sides of the strip hole on the back of the panel. One support frame is set in front of and behind the sleeve on each side. A sliding rod is fixedly connected between the support frames. The sleeve is slidably connected to the sliding rod. A cylinder is fixed on the back of the panel. The output shaft of the cylinder is connected to the first clamping plate and the second clamping plate to drive them to slide.

[0007] Furthermore, an adjustable top rod is provided on the support frame, which controls the stroke of the first and second clamping plates by pressing against both ends of the sleeve.

[0008] Furthermore, first guide blocks are installed on the left and right sides and front and back of the front of the panel. The first guide block includes a first mounting part and a first guide part that are vertically connected. The first mounting part is fixed in the mounting groove opened on the front of the panel by fasteners. The second guide part is an inclined surface with the same slope as the side panel core on the side facing the side panel core.

[0009] Furthermore, a second guide block is provided on the left and right sides of the front panel. The second guide block includes a second mounting part and a second guide part that are vertically connected. The second mounting part is fixed in the mounting groove opened on the front panel by fasteners. The second mounting part extends protruding towards the side panel core and is provided with a second guide part. The second guide part can be engaged in the positioning groove on the outside of the side panel core.

[0010] Furthermore, the frame can be detachably fixed to the connecting panel.

[0011] The screwless locking clamp for cylinder core assembly provided by this utility model has the following significant advantages:

[0012] 1. The sand core is clamped and positioned in multiple directions by a mechanical clamping device, eliminating the need for screws and achieving a "screwless" sand core assembly process. This effectively avoids losses and rework caused by screw deformation under high temperature conditions, thus improving economic efficiency.

[0013] 2. The device uses a sliding clamping plate combined with a custom clamping protrusion, along with a guide block, to achieve multi-face clamping and limiting of the side plate core and cylinder core assembly, ensuring the stability and repeatability of the core assembly during the clamping process.

[0014] 3. The clamping protrusions adopt a modular design, which can be quickly replaced according to different cylinder structures, and has good product versatility and adaptability, thereby improving the flexible production capability of the fixture.

[0015] 4. By adopting a combination of cylinder drive and mechanical limit, the clamping action can be automatically controlled, simplifying manual operation steps, shortening the core assembly and core placement preparation time, and improving the cycle efficiency of the casting production line.

[0016] 5. The process of inserting the locking screw has been eliminated, avoiding manual intervention due to screw jamming or breakage, thus improving the safety and convenience of the operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the clamping mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the bottom structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the guide block of this utility model;

[0021] Figure 5 This is a cross-sectional schematic diagram of the clamping cylinder core assembly of this utility model;

[0022] Figure 6 This is a simplified schematic diagram of existing technology;

[0023] Figure 7 This is a simplified schematic diagram of the present invention.

[0024] In the diagram: 1. Clamp frame; 11. Panel; 12. Square frame; 2. Lower core machine connecting frame; 3. Positioning guide sleeve; 4. Positioning guide pin; 5. First clamping plate; 51. First clamping protrusion; 6. Second clamping plate; 61. Second clamping protrusion; 7. Clamping mechanism; 71. Sleeve; 72. Support frame; 73. Slide rod; 74. Top rod; 75. Cylinder; 8. First guide block; 81. First mounting part; 82. First guide part; 9. Second guide block; 91. Second mounting part; 92. Second guide part; 10. Cylinder core assembly; 101. Main core sand core assembly; 102. Side plate core; 103. Locking screw. Detailed Implementation

[0025] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed description of a screwless locking lower core clamp for a cylinder core assembly according to this utility model.

[0026] like Figure 1 , Figure 3 and Figure 5As shown, a screwless locking clamp for a cylinder core assembly includes a clamp frame 1. The clamp frame 1 includes a square panel 11. A core-laying machine connecting frame 2 is installed on the back of the panel 11. The core-laying machine connecting frame 2 is a positioning connection component between the core-laying clamp and the core-laying machine. A square frame 12 is connected around the front of the panel 11. Positioning guide sleeves 3 are provided in the middle of the front and rear sides of the lower end of the square frame 12. There is one positioning guide sleeve 3 at the front and one at the rear for positioning the core-laying clamp and the core-laying jig, so that the sand core is in the same position on the core-laying clamp and the core-laying jig. Positioning guide pins 4 are provided in the middle of the left and right sides of the lower end of the square frame 12 for positioning in conjunction with the sand box. There is one positioning guide pin 4 on each side for positioning the core-laying clamp and the sand box, ensuring that the core-laying clamp smoothly and accurately lowers the sand core into the sand mold.

[0027] The left and right sides of the panel 11 are provided with sliding first clamping plates 5. The first clamping plates 5 are used to clamp the side plate cores on the left and right sides. The inner side of the first clamping plates 5 is provided with first clamping protrusions 51 for engaging the upper limit groove of the side plate core 102. There are two first clamping plates 5 in total, which are used to complete the sand core clamping action. The clamping stroke is designed according to the minimum and maximum product size. The first clamping plates 5 are designed with mounting holes, which can be quickly replaced with the first clamping protrusions 51 of each product.

[0028] The front and rear sides of the panel 11 are provided with a slidingly connected second clamping plate 6. The second clamping plate 6 is used to clamp the cylinder top and bottom sides of the cylinder core assembly 10, and to complete the action of gripping and releasing the cylinder core assembly 10. The inner side of the second clamping plate 6 is provided with a second clamping protrusion 61 for engaging the limiting grooves on the front and rear sides of the cylinder core assembly 10.

[0029] like Figure 2 As shown, the first clamping plate 5 and the second clamping plate 6 extend to the top of the panel 11 through a strip-shaped hole. The clamping plates 5 and 6 are controlled by a clamping mechanism 7, which includes sleeves 71 positioned at both ends of the upper sides of the first and second clamping plates 5 and 6. Support frames 72 are provided on both sides of the strip-shaped hole on the back of the panel 11, with one support frame 72 on each side positioned before and after the sleeves 71. A sliding rod 73 is fixedly connected between the support frames 72, and the sleeves 71 are slidably connected to the sliding rods 73. A cylinder 75 is fixed to the back of the panel 11, and the output shaft of the cylinder 75 is connected to the first and second clamping plates 5 and 6 to drive their sliding. Adjustable push rods 74 are provided on the support frames 72, which control the stroke of the first and second clamping plates 5 and 6 by pressing against both ends of the sleeves 71.

[0030] like Figure 3 and Figure 4As shown, first guide blocks 8 are installed on the left and right sides and front and back of the panel 11. The first guide block 8 includes a first mounting part 81 and a first guide part 82 that are vertically connected. The first mounting part 81 is fixed in the mounting groove opened on the front of the panel 11 by fasteners. The first guide part 82 is an inclined surface with the same slope as the side plate core 102 on the side facing the side plate core 102.

[0031] The front of the panel 11 is provided with second guide blocks 9 on the left and right sides. The second guide block 9 includes a second mounting part 91 and a second guide part 92 connected vertically. The second mounting part 91 is fixed in the mounting groove opened on the front of the panel 11 by fasteners. The second mounting part 91 protrudes and extends towards the side plate core 102 and is provided with the second guide part 92. The second guide part 92 can be engaged in the positioning slot on the outside of the side plate core 102. The first guide block 8 and the second guide block 9 can simultaneously restrict the position of the sand core in two directions to ensure the positional accuracy of the sand core in the lower core fixture.

[0032] like Figure 6 As shown, the cylinder core assembly 10 includes a main core sand core assembly 101 in the middle and side plate cores 102 on both sides. The side plate cores 102 on both sides are locked to the main core sand core assembly 101 by locking screws 103. The second clamping protrusion 61 on the second clamping plate 6 clamps the top and bottom ends of the cylinder core assembly 10 for core setting.

[0033] like Figure 7 As shown, the screwless locking core clamping fixture of this utility model eliminates the need for the locking screw 103. The cylinder core assembly 10 first uses the first clamping protrusion 51 of the first clamping plate 5 to clamp the side plate cores 102 on both sides. The main core sand core assembly 101 is placed between the side plate cores 102 and clamped to prevent the sand core from scattering. Then, the second clamping protrusion 61 of the second clamping plate 6 clamps the cylinder top and cylinder bottom ends of the cylinder core assembly 10 for core setting. This fixture solution, while replacing the traditional screw-driven core assembly method, provides a reliable, efficient, and flexible screwless sand core locking fixture system, which has significant application value for the automated and efficient production of complex castings such as diesel engine cylinder blocks.

[0034] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A screwless locking clamp for a cylinder core assembly, characterized in that, The fixture includes a clamp frame (1), which includes a square panel (11). A core-lowering machine connecting frame (2) is installed on the back of the panel (11). A square frame (12) is connected around the front of the panel (11). A positioning guide sleeve (3) is provided in the middle of the front and rear sides of the lower end of the square frame (12). A positioning guide pin (4) for positioning with the sand box is provided in the middle of the left and right sides of the lower end of the square frame (12). A sliding first clamping plate (5) is provided on the left and right sides of the panel (11). A clamping plate (5) is used to clamp the side plate cores (102) on the left and right sides. The inner side of the first clamping plate (5) is provided with a first clamping protrusion (51) for engaging the upper limit groove of the side plate core (102). The front and rear sides of the panel (11) are provided with a slidingly connected second clamping plate (6). The second clamping plate (6) is used to clamp the cylinder top and cylinder bottom sides of the cylinder core assembly (10) at the front and rear. The inner side of the second clamping plate (6) is provided with a second clamping protrusion (61) for engaging the upper limit groove of the cylinder core assembly (10) at the front and rear sides.

2. The screwless locking lower core clamp for the cylinder core assembly according to claim 1, characterized in that, The first clamping plate (5) and the second clamping plate (6) extend to the top of the panel (11) through the strip hole opened on the panel (11). The first clamping plate (5) and the second clamping plate (6) are controlled by the clamping mechanism (7). The clamping mechanism (7) includes sleeves (71) set at both ends of the upper side of the first clamping plate (5) and the second clamping plate (6). Support frames (72) are set on both sides of the strip hole on the back of the panel (11). Each side of the support frame (72) is set with one in front and one behind the sleeve (71). The slide rod (73) is fixedly connected between the support frames (72). The sleeve (71) is slidably connected to the slide rod (73). A cylinder (75) is fixed on the back of the panel (11). The output shaft of the cylinder (75) is connected to the first clamping plate (5) and the second clamping plate (6) to drive them to slide.

3. The screwless locking lower core clamp for the cylinder core assembly according to claim 2, characterized in that, An adjustable top rod (74) is provided on the support frame (72) to control the stroke of the first clamping plate (5) and the second clamping plate (6) by abutting against both ends of the sleeve (71).

4. The screwless locking lower core clamp for the cylinder core assembly according to claim 1, characterized in that, First guide blocks (8) are installed on the left and right sides and front and back of the front of the panel (11). The first guide block (8) includes a first mounting part (81) and a first guide part (82) connected vertically. The first mounting part (81) is fixed in the mounting groove opened on the front of the panel (11) by fasteners. The first guide part (82) facing the side plate core (102) is an inclined surface with the same slope as the side plate core (102).

5. The cylinder core assembly screwless locking lower core clamp according to claim 4, characterized in that, The front of the panel (11) is provided with second guide blocks (9) on the left and right sides. The second guide blocks (9) include a second mounting part (91) and a second guide part (92) connected vertically. The second mounting part (91) is fixed in the mounting groove opened on the front of the panel (11) by fasteners. The second mounting part (91) protrudes and extends towards the side core (102) and is provided with the second guide part (92). The second guide part (92) can be snapped into the positioning slot on the outside of the side core (102).

6. The cylinder core assembly screwless locking lower core clamp according to any one of claims 1 to 5, characterized in that, The frame (12) is detachably fixed to the connecting panel (11).

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