Vermicular graphite cast iron cylinder cover flat pouring process casting device

Abstract

The utility model provides a vermicular graphite cast iron cylinder cover flat pouring process casting device, which comprises a bottom template, two groups of template frames, two groups of transverse templates, two groups of longitudinal templates and two groups of mounting frames, a sand core placing frame for placing a sand core is arranged on the bottom template, the two groups of template frames are transversely and oppositely arranged above the bottom template, and the two groups of mounting frames are arranged on the bottom template. An adjusting assembly used for adjusting the distance between the two sets of formwork frames is arranged on the side portion of the bottom formwork, guide holes allowing the transverse formwork to pass through are formed in the two sets of formwork frames, the transverse formwork is driven by a first air cylinder, the two sets of mounting frames are driven by a second air cylinder, and the two sets of longitudinal formworks are detachably assembled on the two sets of mounting frames respectively. According to the horizontal pouring process casting device for the vermicular graphite cast iron cylinder cover, when cylinder covers of different models are cast, only the longitudinal templates with proper lengths need to be selected according to the lengths of the cylinder covers of different specifications, all the casting devices do not need to be customized again, manufacturing and arrangement of redundant casting devices are omitted, and universality is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to cylinder cover casting technical field, concretely is a kind of vermicular graphite cast iron cylinder cover flat pouring process casting device. BACKGROUND

[0002] Cylinder cover is installed on the upper surface of cylinder body, seals cylinder from upper part and constitutes combustion chamber. It is often in contact with high-temperature and high-pressure gas, so it bears great thermal load and mechanical load. Cylinder cover is mainly processed by casting mold. The cylinder cover in casting mold is mainly processed and formed by cooperating mold and injection mechanism with casting tooling. Casting tooling mainly plays the role of cylinder cover blank forming.

[0003] When the cylinder cover casting tooling of the present casting mold is processed, the following problems exist: the size of side support template is fixed. One cylinder cover casting mold can only produce one specification of cylinder cover. If different sizes of cylinder cover need to be cast, mold needs to be re-customized, and processing has limitations. INVENTION CONTENTS

[0004] (I) technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a kind of vermicular graphite cast iron cylinder cover flat pouring process casting device, solve the problem raised in the above background art.

[0006] (II) technical scheme

[0007] To achieve the above object, the utility model is realized by the following technical scheme: a kind of vermicular graphite cast iron cylinder cover flat pouring process casting device, including bottom template, two groups of template frame, two groups of horizontal template, two groups of longitudinal template, two groups of mounting bracket, the sand core placing frame for placing sand core is provided on the bottom template, two groups of template frame are laterally opposite and set on the top of bottom template, the side of bottom template is provided with the adjusting assembly for adjusting the interval between two groups of template frame, the guide hole for the horizontal template is provided on two groups of template frame, the horizontal template is driven by cylinder one, two groups of mounting bracket are driven by cylinder two, two groups of longitudinal template are respectively detachably assembled on two groups of mounting bracket.

[0008] Preferably, dovetail groove is vertically provided on the mounting bracket, and dovetail block is slidably matched with the dovetail groove on the back of longitudinal template.

[0009] Preferably, limit plate is rotatably connected on both sides of dovetail groove on the mounting bracket, and the limit plate can cover the dovetail block after rotation.

[0010] Preferably, spring is arranged below the dovetail block in the dovetail groove.

[0011] Preferably, the adjustment assembly includes a lead screw, a drive motor, and a guide rod. The lead screw and guide rod are both horizontally arranged on the side of the bottom template. The drive motor is arranged on the bottom template and is used to drive the lead screw to rotate. The two threaded sections on both sides of the lead screw have opposite directions of rotation. Nuts are threaded on both threaded sections. The two nuts are respectively connected to two sets of template frames. Both sets of template frames are provided with guide sleeves that are slidably sleeved on the guide rod.

[0012] Preferably, both template frames are provided with filling grooves for adding liquid vermicular graphite cast iron, and the filling grooves have filling ports on the side facing the sand core placement frame.

[0013] Preferably, the filling slot is rotatably mounted on a template frame, and the template frame is equipped with a rotary motor for driving the filling slot to rotate.

[0014] (III) Beneficial Effects

[0015] This invention provides a casting apparatus for vermicular graphite cast iron cylinder heads using a flat casting process. It has the following beneficial effects:

[0016] 1. The vermicular graphite cast iron cylinder head flat casting process casting device only requires selecting the appropriate length of longitudinal template according to the length of the cylinder head of different specifications when casting different models of cylinder heads. There is no need to re-customize the entire casting device, saving the manufacturing and layout of redundant casting devices, and it has strong versatility.

[0017] 2. In the flat casting process of the vermicular graphite cast iron cylinder head, when the lead screw rotates, the two threaded sections rotate in opposite directions, which allows the two sets of template frames to move in opposite or opposite directions, thereby achieving symmetrical width adjustment based on the center line of the bottom template.

[0018] 3. The flat casting process for this vermicular graphite cast iron cylinder head uses two mold frames with filling slots. When high-temperature liquid vermicular graphite cast iron needs to be added, the high-temperature liquid vermicular graphite cast iron is first injected into the two filling slots. Then, the two filling slots are driven to rotate synchronously towards the sand core placement frame by the rotating motors on both sides. The synchronous filling on both sides can make the injection volume in the mold cavity uniform, and the impact force on the sand cores on both sides can also cancel each other out, resulting in a better forming effect for the cylinder head. Attached Figure Description

[0019] Figure 1 This is an isometric view of the present invention;

[0020] Figure 2 This is a schematic diagram of the guide rod and guide sleeve of this utility model;

[0021] Figure 3 This is a front sectional view of the mounting bracket of this utility model.

[0022] In the diagram: 1 Bottom template, 2 Sand core placement rack, 3 Template rack, 4 Horizontal template, 5 Guide hole, 6 Longitudinal template, 7 Cylinder 1, 8 Cylinder 2, 9 Mounting rack, 10 Dovetail groove, 11 Dovetail block, 12 Limiting plate, 13 Spring, 14 Lead screw, 15 Nut, 16 Drive motor, 17 Guide rod, 18 Guide sleeve, 19 Filling groove, 20 Rotary motor, 21 Filling port. Detailed Implementation

[0023] This utility model embodiment provides a casting device for the flat casting process of vermicular graphite cast iron cylinder heads, such as... Figures 1-3 As shown, it includes a bottom template 1, two sets of template frames 3, two sets of horizontal templates 4, two sets of vertical templates 6, and two sets of mounting frames 9.

[0024] The bottom template 1 is equipped with a sand core placement rack 2 for placing sand cores. The specific structure of the sand core placement rack 2 is determined according to the shape of the sand core, and its purpose is to support and position the shape of the sand core. The sand core placement rack 2 can also be disassembled and installed from the bottom template 1 by means of bolt connection.

[0025] Two sets of template frames 3 are arranged horizontally opposite each other above the bottom template 1. The side of the bottom template 1 is provided with an adjustment component for adjusting the distance between the two sets of template frames 3. Both sets of template frames 3 are provided with guide holes 5 for the horizontal template 4 to pass through. The two sets of longitudinal templates 6 are detachably assembled on the two sets of mounting frames 9.

[0026] Cylinder 7 and cylinder 8 are fixed by carriers respectively. The transverse template 4 is driven laterally by cylinder 7, and the two sets of mounting brackets 9 are driven longitudinally by cylinder 8.

[0027] like Figure 1 As shown, the sand core placement frame 2 is rectangular in shape. Two sets of horizontal templates 4 and two sets of vertical templates 6 are used to support the sand core placement frame 2 around its perimeter, forming the outer model of the cylinder head.

[0028] like Figures 1-2 As shown, the mounting bracket 9 has a vertically formed dovetail groove 10, and the back of the longitudinal template 6 is provided with a dovetail block 11 that slides and adapts to the dovetail groove 10. When casting cylinder heads of different models, only the appropriate length of the longitudinal template 6 needs to be selected according to the length of the cylinder head of different specifications. There is no need to re-customize the entire casting equipment, which saves the manufacturing and layout of redundant casting equipment and has strong versatility.

[0029] To prevent vertical displacement of the dovetail block 11, limiting plates 12 are rotatably connected to both sides of the dovetail groove 10 on the mounting bracket 9. After the limiting plates 12 are rotated, they can cover the dovetail block 11 or completely detach from the dovetail groove 10. When the dovetail block 11 is fully inserted into the dovetail groove 10, the top of the dovetail block 11 is limited by rotating the limiting plates 12 to prevent vertical displacement.

[0030] like Figure 3 As shown, to facilitate the replacement of the longitudinal template 6, a spring 13 is provided in the dovetail groove 10 below the dovetail block 11. When the dovetail block 11 is installed, it will press the spring 13 downward. When the dovetail block 11 is disassembled, after the limiting plate 12 is disengaged, the dovetail block 11 will spring upward under the action of the spring 13, making it easy to remove the dovetail block 11 from the dovetail groove 10.

[0031] like Figures 1-2 As shown, the adjustment assembly includes a lead screw 14, a drive motor 16, and a guide rod 17. The two ends of the lead screw 14 are rotatably mounted on one side of the bottom template 1 via bearing seats and are arranged laterally. The guide rod 17 is laterally mounted on the other side of the bottom template 1. Both sets of template frames 3 are equipped with guide sleeves 18 that are slidably fitted onto the guide rod 17. The drive motor 16 is mounted on the bottom template 1 and is used to drive the lead screw 14 to rotate. The two threaded sections on both sides of the lead screw 14 rotate in opposite directions, and each threaded section is threaded with a nut 15. The two nuts 15 are respectively connected to the two sets of template frames 3. When the lead screw 14 rotates, because its two threaded sections rotate in opposite directions, the two sets of template frames 3 can move in opposite or opposite directions, thereby achieving symmetrical width adjustment based on the centerline of the bottom template 1.

[0032] Both template frames 3 are equipped with filling grooves 19 for adding liquid vermicular graphite cast iron. The two ends of the filling grooves 19 are rotatably mounted on the template frames 3 via bearing seats. The template frames 3 are equipped with a rotary motor 20 for driving the filling grooves 19 to rotate.

[0033] The filling tank 19 has a filling port 21 on the side facing the sand core placement frame 2. The filling port 21 is located near the top surface of the filling tank 19.

[0034] When it is necessary to inject high-temperature liquid vermicular graphite cast iron, first inject the high-temperature liquid vermicular graphite cast iron into two injection tanks 19, and then drive the two injection tanks 19 to rotate synchronously in the direction of the sand core placement frame 2 through the rotating motors 20 on both sides. The synchronous injection on both sides can make the injection volume on both sides of the mold cavity uniform, and the impact force on the sand core on both sides can also cancel each other out, resulting in a better molding effect of the cylinder head.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A compacted graphite iron cylinder head permanent mold casting apparatus, characterized by: The utility model relates to a sand core casting device, including bottom template (1), two groups of template frame (3), two groups of transverse template (4), two groups of longitudinal template (6), two groups of mounting frame (9), the sand core placing frame (2) for placing sand core is provided on bottom template (1), two groups of template frame (3) are laterally opposite and set up in the top of bottom template (1), the lateral part of bottom template (1) is provided with the adjusting assembly for adjusting the interval between two groups of template frame (3), the guide hole (5) that can pass through transverse template (4) is seted up on two groups of template frame (3), the transverse template (4) is driven through air cylinder one (7), two groups of mounting frame (9) are driven through air cylinder two (8), two groups of longitudinal template (6) are detachably assembled on two groups of mounting frame (9) respectively.

2. The compacted vermicular cast iron cylinder head casting apparatus according to claim 1, wherein: The mounting frame (9) is vertically provided with a dovetail groove (10), and the back of the longitudinal template (6) is provided with a dovetail block (11) that is slidably matched with the dovetail groove (10).

3. The compacted vermicular cast iron cylinder head casting apparatus according to claim 2, wherein: The mounting frame (9) is rotatably connected with a limiting plate (12) on both sides of the dovetail groove (10), and the limiting plate (12) can cover the dovetail block (11) after rotation.

4. The compacted vermicular cast iron cylinder head of claim 3, wherein: The spring (13) is arranged below the dovetail block (11) in the dovetail groove (10).

5. The compacted vermicular cast iron cylinder head casting apparatus according to claim 1, wherein: The adjusting assembly comprises a lead screw (14), a driving motor (16) and a guide rod (17), the lead screw (14) and the guide rod (17) are both transversely arranged on the side of the bottom template (1), the driving motor (16) is arranged on the bottom template (1) and is used for driving the lead screw (14) to rotate, the two threaded sections on both sides of the lead screw (14) are opposite in rotation direction, the threaded sections are both threadedly sleeved with a nut (15), the two nuts (15) are respectively connected with the two groups of template frames (3), and the two groups of template frames (3) are both provided with a guide sleeve (18) that is slidably sleeved on the guide rod (17).

6. The compacted vermicular cast iron cylinder head of claim 1, wherein: The two template frames (3) are both provided with an injection groove (19) for injecting liquid vermicular cast iron, and the injection groove (19) is provided with an injection port (21) on the side facing the sand core placing frame (2).

7. The compacted vermicular cast iron cylinder head casting apparatus according to claim 6, wherein: The injection groove (19) is rotatably arranged on the template frame (3), and the template frame (3) is provided with a rotating motor (20) for driving the injection groove (19) to rotate.

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