Anti-unbalance loading method for pressing plate of high-pressure forming machine

Abstract

The invention relates to the technical field of high-pressure forming machines, in particular to a high-pressure forming machine pressing plate unbalance loading resisting method which comprises the following steps that the gravity center of an upper mold of a grouting mold is tested, and the side, deviating from the gravity center, of the upper mold is tested; a lower mold body of a grouting mold is placed on the grouting base, and an upper mold body is fixed to the lower side of the pressing plate; a guide mechanism is mounted on the side opposite to the side where the gravity center of the upper die deviates on the high-pressure forming machine rack; closing the upper mold and the lower mold, and grouting; after the specified curing time, the top oil cylinder drives the pressing plate to move upwards, demolding is conducted, and the blank is taken out; the guide mechanism is additionally arranged on the opposite side of the unbalance loading side, forward guide is provided for inclination of the pressing plate in the mold pressing and opening process, the problem of vibration of the pressing plate in the mold pressing and opening process can be effectively solved, the pressing plate moves more stably when equipment runs, and the problem of blank cracking caused by inclination of an upper mold is avoided; meanwhile, the guide mechanism is simple in structure, easy to assemble and high in adaptability.

Description

Technical Field

[0001] The invention relates to the technical field of high pressure forming machines, in particular to a method for resisting off-center loading of a pressing plate of a high pressure forming machine. Background Art

[0002] At present, sanitary ceramics are generally processed using high-pressure forming machines. When in use, the lower mold of the grouting mold is placed on the grouting base, the grouting holes are aligned, and the upper mold of the grouting mold is installed on the clamping plate. The clamping plate is fixed at the output end of the neck cylinder. The top cylinder drives the clamping plate and the upper mold downward to close the mold. After the grouting is completed and the blank is formed, the top cylinder drives the clamping plate and the upper mold upward to open the mold.

[0003] During the actual production and processing, we found that due to the influence of model design, some grouting molds, such as toilet covers and toilet bodies, have upper and lower molds that are light on one side and heavy on the other. In this way, after the upper mold is fixed on the clamping plate, the clamping plate will be overloaded. During the process of mold closing and mold opening, the center of gravity of the upper mold is not in the center, which will cause the clamping plate to vibrate in the process of up and down movement under the dual forces of the top oil cylinder and the gravity of the upper mold, affecting the stability of equipment operation; at the same time, due to the tilt of the upper mold when opening the mold, it is also easy to cause cracking of the blank, affecting product quality. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide a method for resisting off-center loading of a pressure plate of a high-pressure forming machine, which can effectively prevent the pressure plate from vibrating when the pressure plate of the high-pressure forming machine is off-center loaded, thereby ensuring product quality.

[0005] The technical solution adopted by the present invention to solve its technical problem is: A method for resisting off-center loading of a pressing plate of a high pressure forming machine, comprising the following steps: S1: To test the center of gravity of the upper mold of the grouting mold, first fix the hanging rope, set a suction cup at the lower end of the hanging rope, suck the suction cup at the center of the upper mold, lift the upper mold, observe which side of the upper mold sinks, and test the side where the center of gravity of the upper mold is biased; S2: Place the lower mold of the grouting mold on the grouting base, and fix the upper mold on the lower side of the pressing plate; S3: A guide mechanism is installed on the side opposite to the side where the center of gravity of the upper mold is biased on the frame of the high-pressure forming machine, the guide mechanism includes a connecting angle steel, a first side plate of the connecting angle steel is connected and fixed to the frame of the high-pressure forming machine, a longitudinal slide rail is provided on the second side plate, a connecting seat is slidably connected to the longitudinal slide rail, a connecting plate is provided on the connecting seat, and the connecting plate is connected and fixed to the side of the pressing plate; S4: The top oil cylinder drives the pressing plate downward, the upper mold and the lower mold are closed, and grouting is performed; S5: After waiting for the specified curing time, the top cylinder drives the clamping plate upward, and the blank can be removed from the mold.

[0006] Preferably, in step S3, the connecting seat of the guide mechanism is slidably connected to the longitudinal slide rail through a pulley block, the pulley block includes a first pulley and a second pulley, and the first pulley and the second pulley are respectively arranged on both sides of the longitudinal slide rail; the stability and balance of the pulley block when sliding are improved.

[0007] Preferably, it also includes an eccentric guide wheel shaft and a concentric guide wheel shaft respectively arranged on both sides of the longitudinal slide rail, the eccentric guide wheel shaft and the concentric guide wheel shaft both include a front and a rear section, the front section of the eccentric guide wheel shaft and the rear section of the eccentric guide wheel shaft are not arranged in a colinear manner, and the front section of the concentric guide wheel shaft and the rear section of the concentric guide wheel shaft are arranged in a colinear manner; the rear section of the eccentric guide wheel shaft and the rear section of the concentric guide wheel shaft are both fixed to the connecting seat through a locking nut and a washer; the first pulley is rotatably connected to the front section of the eccentric guide wheel shaft, and the second pulley is rotatably connected to the front section of the concentric guide wheel shaft.

[0008] Preferably, the eccentric guide wheel shaft and the concentric guide wheel shaft are both sleeved with shaft sleeves; the shaft sleeves can play a protective role to prevent the eccentric guide wheel shaft and the concentric guide wheel shaft from being worn and scratched during operation, thereby extending the service life of the eccentric guide wheel shaft and the concentric guide wheel shaft.

[0009] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features: The present invention adopts the method of adding a guide mechanism on the opposite side of the side of the overload. The guide mechanism provides positive guidance for the inclination of the clamping plate during the process of die pressing and mold opening, which can effectively solve the vibration problem of the clamping plate during the process of die pressing and mold opening, and make the movement of the clamping plate more stable when the equipment is running, avoiding the problem of cracking of the blank caused by the inclination of the upper mold, thereby ensuring the production quality of the product; at the same time, the guide mechanism has a simple structure and is easy to assemble. At the same time, it is convenient to adjust according to the direction of the overload and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of a guide mechanism in an embodiment of the present invention; Figure 2 is a schematic diagram of the main structure of the guide mechanism in an embodiment of the present invention; Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle; Figure 4 It is a structural schematic diagram of the guide mechanism when it is installed in the embodiment of the present invention.

[0011] Explanation of the reference numerals: 1. guide frame; 101. longitudinal slide rail; 102. connecting hole; 2. connecting seat; 3. connecting plate; 4. first pulley; 5. second pulley; 6. eccentric guide wheel shaft; 7. concentric guide wheel shaft; 8. bushing; 9. locking nut; 10. spring washer; 11. flat washer; 12. high-pressure forming machine frame; 13. top cylinder; 14. clamping plate; 15. rear mold clamping assembly. DETAILED DESCRIPTION

[0012] The present invention is further described below in conjunction with specific embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0013] like Figure 1 to Figure 4 As shown, this embodiment provides a method for resisting off-center loading of a pressing plate of a high pressure forming machine, and the steps are as follows: S1: To test the center of gravity of the upper mold of the grouting mold, first fix the hanging rope, set a suction cup at the lower end of the hanging rope, suck the suction cup to the center of the upper mold, lift the upper mold, observe which side of the upper mold sinks, and test the side to which the center of gravity of the upper mold is biased.

[0014] This embodiment takes the toilet cover casting mold as an example. The center of gravity of the toilet cover casting mold is biased to the right, and the right end is the location of the toilet cover rear piece. After the mold is closed, a rear mold clamping component 15 needs to be set.

[0015] S2: After the lower mold of the grouting mold is placed on the grouting base and the upper mold is fixed on the clamping plate 14, the load center of gravity of the clamping plate 14 is biased to the right.

[0016] S3: A guide mechanism is installed on the high-pressure forming machine frame 12 on the opposite side (the left side in this embodiment) of the side where the center of gravity of the upper mold is biased, and the guide mechanism includes a connecting angle steel, and a connecting hole 102 is processed on the first side plate of the connecting angle steel. The first side plate is bolted and fixed to the left column of the high-pressure forming machine frame 12 through the connecting hole 102, and a longitudinal slide rail 101 is provided on the second side plate. A connecting seat 2 is slidably connected to the longitudinal slide rail 101, and a connecting plate 3 is provided on the connecting seat 2. The connecting plate 3 is connected and fixed to the side of the clamping plate 14.

[0017] Among them, in order to improve the stability and balance of the pulley block when sliding, the connecting seat 2 of the guide mechanism is slidably connected to the longitudinal slide rail 101 through the pulley block. The pulley block includes a first pulley 4 and a second pulley 5. The first pulley 4 and the second pulley 5 are respectively arranged on both sides of the longitudinal slide rail 101.

[0018] It also includes an eccentric guide wheel shaft 6 and a concentric guide wheel shaft 7 respectively arranged on both sides of the longitudinal slide rail 101, the eccentric guide wheel shaft 6 and the concentric guide wheel shaft 7 both include a front and a rear section, the front section of the eccentric guide wheel shaft 6 and the rear section of the eccentric guide wheel shaft 6 are not arranged in a colinear manner, and the front section of the concentric guide wheel shaft 7 and the rear section of the concentric guide wheel shaft 7 are arranged in a colinear manner; the rear section of the eccentric guide wheel shaft 6 and the rear section of the concentric guide wheel shaft 7 are both fixed to the connecting seat 2 by a locking nut 9 and a washer; wherein the washer includes a flat washer 11 and a spring washer 10; the first pulley 4 is rotatably connected to the front section of the eccentric guide wheel shaft 6, and the second pulley 5 is rotatably connected to the front section of the concentric guide wheel shaft 7.

[0019] By setting an eccentric guide wheel shaft 6, it is more convenient to slide the connecting seat 2 onto the longitudinal slide rail 101; at the same time, loosening the locking nut 9 and rotating the eccentric guide wheel shaft 6 can adjust the pressure between the first pulley 4 and the second pulley 5 on the longitudinal slide rail 101, and then adjust the friction between the pulley group and the longitudinal slide rail 101; when the eccentric load torque of the clamping plate 14 is large, the friction between the adjustment pulley group and the longitudinal slide rail 101 can be appropriately increased, and when the eccentric load torque of the clamping plate 14 is small, the friction between the adjustment pulley group and the longitudinal slide rail 101 can be appropriately reduced to ensure that when the top oil cylinder 13 drives the clamping plate 14 to move, the pulley group can slide smoothly along the longitudinal slide rail 101, and at the same time, it can also provide sufficient guiding force for the clamping plate 14.

[0020] Furthermore, in order to prevent the eccentric guide wheel shaft 6 and the concentric guide wheel shaft 7 from being worn and scratched during operation, the eccentric guide wheel shaft 6 and the concentric guide wheel shaft 7 are both sleeved with shaft sleeves 8‌‌.

[0021] S4: The top oil cylinder 13 drives the pressing plate 14 downward, the upper mold and the lower mold are closed, and grouting is performed.

[0022] S5: After waiting for the specified curing time, the top oil cylinder 13 drives the pressing plate 14 upward, and the blank is removed from the mold.

[0023] The present invention can effectively solve the vibration problem of the clamping plate 14 caused by the overload of the clamping plate 14 during the die pressing and die opening process, so that the clamping plate 14 moves more smoothly when the equipment is running, avoiding the cracking problem of the blank caused by the tilt of the upper die, thereby ensuring the product production quality.

[0024] The above description is only the preferred embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent changes made by using the contents of the present invention specification and its drawings are included in the scope of rights of the present invention.

Claims

1. A method for resisting off-center loading of a pressing plate of a high pressure forming machine, characterized in that: Here are the steps: S1: To test the center of gravity of the upper mold of the grouting mold, first fix the hanging rope, set a suction cup at the lower end of the hanging rope, suck the suction cup at the center of the upper mold, lift the upper mold, observe which side of the upper mold sinks, and test the side where the center of gravity of the upper mold is biased; S2: placing the lower mold of the grouting mold on the grouting base, and fixing the upper mold on the lower side of the pressing plate (14); S3: A guide mechanism is installed on the high-pressure forming machine frame (12) on the opposite side to the side where the center of gravity of the upper mold is biased, the guide mechanism includes a connecting angle steel, a first side plate of the connecting angle steel is connected and fixed to the high-pressure forming machine frame (12), a second side plate is provided with a longitudinal slide rail (101), a connecting seat (2) is slidably connected to the longitudinal slide rail (101), a connecting plate (3) is provided on the connecting seat (2), and the connecting plate (3) is connected and fixed to the side of the pressing plate (14); S4: The top oil cylinder (13) drives the pressing plate (14) downward, the upper mold and the lower mold are closed, and grouting is performed; S5: After waiting for the specified curing time, the top oil cylinder (13) drives the pressing plate (14) upwards, and the blank is removed from the mold.

2. A method for resisting off-center loading of a pressure plate of a high pressure forming machine according to claim 1, characterized in that: In step S3, the connecting seat (2) of the guide mechanism is slidably connected to the longitudinal slide rail (101) via a pulley block, wherein the pulley block comprises a first pulley (4) and a second pulley (5), and the first pulley (4) and the second pulley (5) are respectively arranged on both sides of the longitudinal slide rail (101).

3. A method for resisting off-center loading of a pressure plate of a high pressure forming machine according to claim 2, characterized in that: The invention also comprises an eccentric guide wheel shaft (6) and a concentric guide wheel shaft (7) respectively arranged on both sides of the longitudinal slide rail (101); the eccentric guide wheel shaft (6) and the concentric guide wheel shaft (7) both comprise a front and a rear section; the front section of the eccentric guide wheel shaft (6) and the rear section of the eccentric guide wheel shaft (6) are not arranged in a colinear manner, and the front section of the concentric guide wheel shaft (7) and the rear section of the concentric guide wheel shaft (7) are arranged in a colinear manner; the rear section of the eccentric guide wheel shaft (6) and the rear section of the concentric guide wheel shaft (7) are both fixedly connected to the connecting seat (2) via a locking nut (9) and a washer; the first pulley (4) is rotatably connected to the front section of the eccentric guide wheel shaft (6), and the second pulley (5) is rotatably connected to the front section of the concentric guide wheel shaft (7).

4. A method for resisting off-center loading of a pressure plate of a high pressure forming machine according to claim 3, characterized in that: The eccentric guide wheel shaft (6) and the concentric guide wheel shaft (7) are both sleeved with shaft sleeves (8).

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