Vibration punching machine for water gap of engine cylinder cover

Abstract

The invention discloses an engine cylinder cover water gap vibration thrusting machine, and relates to the technical field of engine cylinder cover production, the engine cylinder cover water gap vibration thrusting machine comprises a two-section impact assembly, the two-section impact assembly comprises a piston body arranged outside, the piston body is sleeved with a sealing ring, and an impact sleeve is integrally fixed to the front end of the piston body; gas passages are formed in the two ends of the interior of the piston body, a magnetism isolating plate is embedded in the middle of the rear end of the piston body, a permanent magnet is fixed to the interior of the magnetism isolating plate through bolts, and an inner cylinder body is embedded in the piston body. Through the structural arrangement of two-section type impact, the surface structure of the nozzle column can be damaged during first-time impact, so that energy is more efficiently transmitted to an internal weak point of the nozzle column during second-time impact, the overall operation time is shortened while invalid energy loss is reduced, and the working efficiency is improved. Stress concentration or crack propagation of other areas of the cylinder cover caused by single overload impact is avoided, the method is particularly suitable for the cylinder cover with casting defects, and the probability of accidental cracking is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of engine cylinder head production, in particular to an engine cylinder head nozzle vibration punching machine. Background Art

[0002] In the casting process, the design of the pouring and riser system determines the flow path and solidification sequence of the molten metal. The nozzle column is the residue formed after the molten metal solidifies in the pouring channel. Its shape is directly related to the shape and size of the gate. During the cooling process of the molten metal, the gate part is prone to obvious cross-sectional separation due to the shrinkage difference at the connection with the main body of the casting, thereby producing nozzle column residue that requires subsequent treatment.

[0003] In traditional technology, operators usually use a special hammer (such as a copper hammer or rubber hammer) to strike the root of the nozzle column with high frequency and low impact force, utilizing the brittle fracture characteristics of metal to achieve separation. This is labor-intensive and can easily damage the casting body. As a result, this process usually takes about 120 seconds to complete, resulting in low work efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide an engine cylinder head nozzle vibration punching machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an engine cylinder head sprue vibration punching machine, comprising a two-stage impact assembly, the two-stage impact assembly comprising a piston body arranged on the outside, the outer sleeve of the piston body being provided with a sealing ring, and an impact sleeve being integrally fixed to the front end of the piston body, gas passages being opened at both ends of the interior of the piston body, and a magnetic isolation plate being embedded in the middle of the rear end of the piston body, and a permanent magnet being fixed by bolts inside the magnetic isolation plate, an inner cylinder body being embedded in the interior of the piston body, and the front end opening of the inner cylinder body being located at the inner bottom end of the impact sleeve, and a hammer being tightly fitted inside the inner cylinder body through a sealing ring.

[0006] Furthermore, the piston body is movably arranged at the inner middle end of the joint quick-release assembly, and the joint quick-release assembly includes a cylinder shell arranged outside the piston body. The inner wall of the cylinder shell is tightly slidably fitted with the piston body through a sealing ring, and the outer edge of the front end of the cylinder shell is provided with a step.

[0007] Furthermore, the quick-release connector assembly also includes a sleeve that slides axially on the outside of the step, a sphere is embedded on the outside of the step, and the upper half of the sphere abuts against the bottom boss of the sleeve, a spring is provided on the inside of the step, and the inside of the step is elastically connected to the sleeve through the spring.

[0008] Furthermore, the joint quick-release assembly also includes a quick-release joint that is movably inserted into the front end opening of the cylinder shell. A bayonet is radially opened on the side of the quick-release joint, and the bayonet is snap-fitted with the lower half of the sphere.

[0009] Furthermore, the quick-release connector assembly also includes an impact head axially slidably installed inside the quick-release connector, a flange is integrally fixed to the rear end of the impact head, and the stepped groove on the outer side of the flange abuts and cooperates with the outer edge of the impact sleeve, the middle boss of the flange abuts and cooperates with the hammer at the bottom end of the impact sleeve, and the inner side of the flange is elastically cooperated with the inner wall of the quick-release connector cavity through a reset spring.

[0010] Furthermore, a gas outlet is provided in the middle of the cylinder shell, and a cylinder cover is fixed with bolts at the rear end of the cylinder shell.

[0011] Furthermore, an armature is provided on the inner side of the cylinder head, and the armature is magnetically attracted to a permanent magnet embedded at the rear end of the piston body, and a gas inlet is provided between the cylinder head and the armature.

[0012] Furthermore, the telescopic end of the impact head is fixedly connected to a sliding block, and the sliding block is arranged on the side of the support plate. The engine cylinder head product is clamped and fixed on the support plate, and the sprue column on the engine cylinder head product is broken under the action of the pulse vibration force generated by the sliding block driven by the impact head.

[0013] Furthermore, limiting plates are provided on the other two sides of the engine cylinder head product, and the side surfaces of the engine cylinder head product are tightly attached to the telescopic ends of the side pressure cylinders. Pillars are fixedly installed on both sides of the support plate, and a downward pressure cylinder is fixedly installed on the top platform of the pillars. The telescopic ends of the downward pressure cylinders are fixedly connected to movable plates, and the movable plates are tightly attached to the top surface of the engine cylinder head product.

[0014] Furthermore, the support plate is arranged in the middle of the frame, a control cabinet is arranged on the side of the frame opening, and a gas storage tank is fixedly installed on the back of the frame.

[0015] The present invention provides an engine cylinder head nozzle vibration punching machine, which has the following beneficial effects: 1. During the use of the present invention, the present application adopts a two-stage impact structure setting, which can destroy the surface structure of the nozzle column during the first impact, so that the second impact can more efficiently transfer energy to the internal weak point of the nozzle column, reducing invalid energy loss while shortening the overall operation time, avoiding stress concentration or crack expansion in other areas of the cylinder head caused by a single overload impact, and is particularly suitable for cylinder heads with casting defects, reducing the probability of accidental cracking.

[0016] 2. During the use of the present invention, a flange with a stepped structure is integrated at the rear end of the impact head. On the one hand, the first impact is transmitted to the impact head through the cooperation of the stepped groove on the outer side of the flange and the impact sleeve. On the other hand, the second impact is transmitted to the impact head through the cooperation of the boss in the middle of the flange and the hammer. While the two-stage impact relieves manual labor, the reset spring on the inner side of the flange assists the reset of the piston body and the hammer inside it, effectively improving the breaking effect of the water inlet column of the engine cylinder head product and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the overall structure of the device of the present invention; Figure 2 It is a partial structural schematic diagram of the device of the present invention; Figure 3 It is a partial structural schematic diagram of the device of the present invention; Figure 4 This is a schematic diagram of the external structure of the pneumatic percussion hammer of the present invention; Figure 5 A schematic diagram of a half-section structure of a pneumatic percussion hammer according to the present invention; Figure 6 This is a schematic diagram of the full cross-section structure of the pneumatic percussion hammer of the present invention; Figure 7 It is a schematic structural diagram of the two-stage impact assembly of the present invention.

[0018] In the figure: 1. Two-stage impact assembly; 101. Piston body; 102. Sealing ring; 103. Impact sleeve; 104. Gas passage; 105. Magnetic isolation plate; 106. Permanent magnet; 107. Inner cylinder; 108. Hammer; 2. Quick-release joint assembly; 201. Cylinder shell; 202. Step; 203. Sliding sleeve; 204. Ball; 205. Spring; 206. Quick-release joint; 207. Bayonet; 208. Impact head; 209. Flange; 210. Return spring; 3. Gas outlet; 4. Cylinder head; 5. Armature; 6. Gas inlet; 7. Sliding block; 8. Support plate; 9. Engine cylinder head product; 10. Limit plate; 11. Side pressure cylinder; 12. Column; 13. Down-pressure cylinder; 14. Moving plate; 15. Frame; 16. Control cabinet; 17. Gas tank. DETAILED DESCRIPTION

[0019] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. See also Figures 4 to 7The present invention provides a technical solution: an engine cylinder head sprue vibration punching machine, comprising a two-stage impact assembly 1, the two-stage impact assembly 1 comprising a piston body 101 arranged on the outside, a sealing ring 102 is provided on the outside of the piston body 101, and an impact sleeve 103 is fixed to the front end of the piston body 101 in an integral manner, gas passages 104 are opened at both ends of the interior of the piston body 101, and a magnetic isolation plate 105 is embedded in the middle of the rear end of the piston body 101, and a permanent magnet 106 is fixed to the inside of the magnetic isolation plate 105 by bolts, an inner cylinder body 107 is embedded in the interior of the piston body 101, and the front end opening of the inner cylinder body 107 is located at the inner bottom end of the impact sleeve 103, and a hammer 108 is tightly fitted inside the inner cylinder body 107 through a sealing ring; The specific operation is as follows: when the pneumatic hammer 108 is not supplied with compressed air, the piston body 101 is tightly fixed on the armature 5 by the strong magnetic force of the permanent magnet 106. When the compressed air is supplied to the inside of the air hammer through the gas inlet 6 on the cylinder head 4, the internal pressure of the cylinder shell 201 increases. When the pressure is greater than the magnetic force, the piston body 101 quickly separates from the armature 5. Due to the reaction force of the strong magnetic force, a strong impact force is generated. The high-speed moving piston body 101 hits the stepped groove of the flange 209 through the front impact sleeve 103, and is connected to the sliding part of the telescopic end of the impact head 208. The moving block 7 transmits the impact force to the nozzle column on the engine cylinder head product 9 to form the first stage of impact. The present application embeds an inner cylinder 107 inside the piston body 101, and seals a certain amount of air between the inner cylinder 107 and the hammer 108. In this way, when the piston body 101 moves forward, the air between the inner cylinder 107 and the hammer 108 is compressed, pushing the hammer 108 forward. When the piston body 101 moves to the front end and stops due to the collision between the impact sleeve 103 and the stepped groove of the flange 209, the hammer 108 continues to move forward due to inertia and hits the impact sleeve 103. 3, and then strikes the impact head 208 to form the second stage of impact. After the piston body 101 hits the bottom, the compressed air is discharged from the gas outlet 3. Through the temporary connection between the gas distribution device and the exhaust port and the elastic force of the return spring 210, the piston body 101 moves back and resets. At the same time, the volume between the inner cylinder 107 and the hammer 108 increases due to the backward movement of the piston body 101, the air pressure decreases, and the hammer 108 is synchronously reset under the push of the external atmospheric pressure. This reciprocating process is repeated. Under the action of the compressed air pressure difference, the piston body 101 moves back and forth. 1 and its internal hammer 108 are highly configured to reciprocate, and the two-stage impact is continuously applied to the engine cylinder head product 9 through the transmission of the sliding block 7 by the telescopic end of the impact head 208. The present application adopts a two-stage impact structure setting, which can destroy the surface structure of the nozzle column during the first impact, so that the second impact can more efficiently transfer energy to the internal weak point of the nozzle column, reducing invalid energy loss while shortening the overall operation time, avoiding stress concentration or crack propagation in other areas of the cylinder head caused by a single overload impact, and is particularly suitable for cylinder heads with casting defects, reducing the probability of accidental cracking; See also Figures 5 and 6 The piston body 101 is movably arranged at the inner middle end of the joint quick-release assembly 2. The joint quick-release assembly 2 includes a cylinder shell 201 arranged outside the piston body 101. The inner wall of the cylinder shell 201 is tightly slidably matched with the piston body 101 through a sealing ring 102, and a step 202 is provided on the outer edge of the front end of the cylinder shell 201. The joint quick-release assembly 2 also includes a sleeve 203 axially sliding on the outside of the step 202. A sphere 204 is embedded on the outside of the step 202, and the upper half of the sphere 204 is The spring 205 is provided on the inner side of the step 202, and the inner side of the step 202 is elastically connected to the sleeve 203 through the spring 205. The joint quick-release assembly 2 also includes a quick-release joint 206 that is movably inserted into the front end opening of the cylinder shell 201. A bayonet 207 is radially provided on the side of the quick-release joint 206, and the bayonet 207 is engaged with the lower half of the sphere 204. The joint quick-release assembly 2 also includes an axially slidable assembly installed on the quick-release joint 206. The impact head 208 inside, the rear end of the impact head 208 is fixed with a flange 209 in an integrated manner, and the outer stepped groove of the flange 209 is in abutment with the outer edge of the impact sleeve 103, the middle boss of the flange 209 is in abutment with the hammer 108 at the bottom end of the impact sleeve 103, and the inner side of the flange 209 is elastically matched with the inner wall of the quick-release joint 206 cavity through the return spring 210. A gas outlet 3 is opened in the middle of the cylinder shell 201, and the cylinder head 4 is fixed with bolts at the rear end of the cylinder shell 201. An armature 5 is provided on the inner side of the cover 4, and the armature 5 is magnetically attracted to the permanent magnet 106 embedded in the rear end of the piston body 101. A gas inlet 6 is provided between the cylinder head 4 and the armature 5. A sliding block 7 is fixedly connected to the telescopic end of the impact head 208, and the sliding block 7 is provided on the side of the support plate 8. The engine cylinder head product 9 is clamped and fixed on the support plate 8. The nozzle column on the engine cylinder head product 9 is broken by the pulse vibration force generated by the sliding block 7 driven by the impact head 208. The specific operation is as follows: according to the needs, the required type of impact head 208 is selected, the sliding sleeve 203 is first retracted in the step 202 at the front end of the cylinder shell 201 so that the ball 204 is no longer restricted, and then the quick-release joint 206 is inserted from the front end opening of the cylinder shell 201. After the sliding sleeve 203 is inserted into place, it is released and reset under the action of the spring 205. The ball 204 is squeezed by the boss at the bottom of the sliding sleeve 203 so that it is stuck in the bayonet 207 on the side of the quick-release joint 206, so that the impact head 208 can be quickly replaced. The present application integrates a stepped flange 209 at the rear end of the impact head 208. On the one hand, the first impact is transmitted to the impact head 208 through the cooperation of the stepped groove on the outer side of the flange 209 and the impact sleeve 103. On the other hand, the second impact is transmitted to the impact head 208 through the cooperation of the boss in the middle of the flange 209 and the hammer 108. The two-stage impact saves labor and effectively improves the breaking effect of the nozzle column of the engine cylinder head product 9, thereby improving production efficiency. See also Figures 1 to 3 , limit plates 10 are provided on the other two sides of the engine cylinder head product 9, and the side surfaces of the engine cylinder head product 9 are tightly attached to the telescopic ends of the side pressure cylinders 11, columns 12 are fixedly installed on both sides of the support plate 8, and a downward pressure cylinder 13 is fixedly installed on the top platform of the columns 12, and a movable plate 14 is fixedly connected to the telescopic end of the downward pressure cylinder 13, and the movable plate 14 is tightly attached to the top surface of the engine cylinder head product 9, the support plate 8 is arranged in the middle of the frame 15, and a control cabinet 16 is provided on the side of the opening of the frame 15, and an air storage tank 17 is fixedly installed on the back of the frame 15; The specific operation is as follows: place the engine cylinder head product 9 on the support plate 8, and press the product against the inner side of the limit plate 10 of the "L"-shaped structure to achieve positioning. Use both hands to operate the button on the control cabinet 16 to start the machine. First, press the movable plate 14 fixed to the telescopic end of the oil cylinder 13 to press it against the top surface of the product, and then press the telescopic end of the cylinder 11 sideways to press it against the side of the product to tighten the engine cylinder head product 9 to avoid displacement during the subsequent sprue column breaking process.

[0020] In summary, when using the engine cylinder head nozzle vibration punching machine: First, place the engine cylinder head product 9 on the support plate 8 and press the product against the inner side of the "L"-shaped limit plate 10 to achieve positioning. Operate the button on the control cabinet 16 with both hands to start the machine. First, press the movable plate 14 connected to the telescopic end of the oil cylinder 13 downward to press against the top surface of the product. Then, press the telescopic end of the cylinder 11 sideways to press against the side of the product to tighten the engine cylinder head product 9 and avoid deviation during the subsequent sprue column breaking process. The spring 205 is then released to allow the spring 205 to return the ball 204 to its original position, and the spring 205 is then released to allow the ball 204 to be snapped into the slot 207 on the side of the quick-release joint 206, thereby achieving rapid replacement of the impact head 208. Then, when no compressed air is introduced into the pneumatic hammer 108, the piston body 101 is tightly fixed to the armature 5 by the strong magnetic force of the permanent magnet 106. When compressed air is introduced into the air hammer through the gas inlet 6 on the cylinder head 4, the internal pressure of the cylinder shell 201 increases. When the pressure is greater than the magnetic force, the piston body 101 separates from the armature 5 at high speed. Due to the reaction force of the strong magnetic force, a strong impact force is generated. The high-speed moving piston body 101 strikes the stepped groove of the flange 209 through the front impact sleeve 103, and transmits the impact force to the nozzle column on the engine cylinder head product 9 through the sliding block 7 connected to the telescopic end of the impact head 208, forming the first stage of impact. Finally, the present application buries an inner cylinder 107 inside the piston body 101, and seals a certain amount of air between the inner cylinder 107 and the hammer 108, so that when the piston body 101 moves forward, the air between the inner cylinder 107 and the hammer 108 is compressed, pushing the hammer 108 forward. When the piston body 101 moves to the front end and stops due to the collision between the impact sleeve 103 and the stepped groove of the flange 209, the hammer 108 continues to move forward due to inertia, and hits the middle boss of the flange 209 extending into the impact sleeve 103, and then strikes the impact head 208 to form the second stage of impact. After the piston body 101 hits the bottom, the compressed air is discharged from the gas outlet 3. Through the short-term connection between the gas distribution device and the exhaust port and the elastic force of the return spring 210, while the piston body 101 moves back and resets, The backward movement of the piston body 101 increases the volume between the inner cylinder body 107 and the hammer 108, reduces the air pressure, and the hammer 108 is synchronously reset under the push of the external atmospheric pressure, and so on. Under the action of the compressed air pressure difference, the piston body 101 and the internal hammer 108 reciprocate with high configuration, and continuously apply a two-stage impact to the engine cylinder head product 9 through the transmission of the sliding block 7 by the telescopic end of the impact head 208. The present application uses a two-stage impact structural setting to destroy the surface structure of the sprue column during the first impact, so that the second impact can more efficiently transfer energy to the internal weak point of the sprue column, reduce invalid energy loss, shorten the overall operation time, and avoid stress concentration or crack expansion in other areas of the cylinder head caused by a single overload impact. It is especially suitable for cylinder heads with casting defects and reduces the probability of accidental cracking.

[0021] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0022] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method of the present invention and its core ideas. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. An engine cylinder head nozzle vibration punching machine, comprising a two-stage impact assembly (1), characterized in that: The two-stage impact assembly (1) includes a piston body (101) arranged on the outside, the piston body (101) is provided with a sealing ring (102) on the outside, and a striking sleeve (103) is fixed integrally to the front end of the piston body (101), gas passages (104) are opened at both ends of the interior of the piston body (101), and a magnetic isolation plate (105) is embedded in the middle of the rear end of the piston body (101), and a permanent magnet (106) is fixed to the interior of the magnetic isolation plate (105) by bolts, an inner cylinder body (107) is embedded in the interior of the piston body (101), and the front end opening of the inner cylinder body (107) is located at the inner bottom end of the striking sleeve (103), and a hammer (108) is tightly fitted inside the inner cylinder body (107) through a sealing ring.

2. The engine cylinder head nozzle vibration punching machine according to claim 1, characterized in that: The piston body (101) is movably arranged at the inner middle end of the joint quick-release assembly (2). The joint quick-release assembly (2) includes a cylinder shell (201) arranged outside the piston body (101). The inner wall of the cylinder shell (201) is tightly slidably matched with the piston body (101) through a sealing ring (102), and a step (202) is provided on the outer edge of the front end of the cylinder shell (201).

3. The engine cylinder head nozzle vibration punching machine according to claim 2, characterized in that: The connector quick-release assembly (2) further comprises a sliding sleeve (203) that slides axially on the outside of the step (202); a sphere (204) is embedded on the outside of the step (202); an upper portion of the sphere (204) abuts against a bottom boss of the sliding sleeve (203); a spring (205) is provided on the inside of the step (202), and the inside of the step (202) is elastically connected to the sliding sleeve (203) via the spring (205).

4. The engine cylinder head nozzle vibration punching machine according to claim 3, characterized in that: The quick-release joint assembly (2) further comprises a quick-release joint (206) movably plugged into the front end opening of the cylinder housing (201), a bayonet (207) being radially provided on the side of the quick-release joint (206), and the bayonet (207) being snap-fitted with the lower half of the sphere (204).

5. The engine cylinder head nozzle vibration punching machine according to claim 4, characterized in that: The connector quick-release assembly (2) further comprises an impact head (208) axially slidably mounted inside the quick-release connector (206), a flange (209) being integrally fixed to the rear end of the impact head (208), and a stepped groove on the outer side of the flange (209) abuttingly fitting with the outer edge of the impact sleeve (103), a boss in the middle of the flange (209) abuttingly fitting with the hammer (108) at the bottom end inside the impact sleeve (103), and an inner side of the flange (209) elastically fitting with the inner wall of the cavity of the quick-release connector (206) via a return spring (210).

6. The engine cylinder head nozzle vibration punching machine according to claim 5, characterized in that: A gas outlet (3) is provided in the middle of the cylinder shell (201), and a cylinder cover (4) is fixed to the rear end of the cylinder shell (201) via bolts.

7. The engine cylinder head nozzle vibration punching machine according to claim 6, characterized in that: An armature (5) is provided on the inner side of the cylinder head (4), and the armature (5) is magnetically attracted to a permanent magnet (106) embedded at the rear end of the piston body (101), and a gas inlet (6) is provided between the cylinder head (4) and the armature (5).

8. The engine cylinder head nozzle vibration punching machine according to claim 7, characterized in that: The telescopic end of the impact head (208) is fixedly connected to a sliding block (7), and the sliding block (7) is arranged on the side of the support plate (8). The engine cylinder head product (9) is clamped and fixed on the support plate (8), and the nozzle column on the engine cylinder head product (9) is broken under the action of the pulse vibration force generated by the sliding block (7) driven by the impact head (208).

9. The engine cylinder head nozzle vibration punching machine according to claim 8, characterized in that: The other two sides of the engine cylinder head product (9) are provided with limit plates (10), and the side surfaces of the engine cylinder head product (9) are in close contact with the telescopic ends of the side pressure cylinders (11). The two sides of the support plate (8) are fixedly mounted with upright posts (12), and the top platforms of the upright posts (12) are fixedly mounted with downward pressure cylinders (13). The telescopic ends of the downward pressure cylinders (13) are fixedly connected with movable plates (14), and the movable plates (14) are in close contact with the top surface of the engine cylinder head product (9).

10. The engine cylinder head nozzle vibration punching machine according to claim 9, characterized in that: The support plate (8) is arranged in the middle of the frame (15), a control cabinet (16) is arranged on the side of the opening of the frame (15), and a gas storage tank (17) is fixedly installed on the back of the frame (15).

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