CN211990920U - Female die control mechanism adopting pneumatic control form - Google Patents
Female die control mechanism adopting pneumatic control form Download PDFInfo
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- CN211990920U CN211990920U CN201922432284.2U CN201922432284U CN211990920U CN 211990920 U CN211990920 U CN 211990920U CN 201922432284 U CN201922432284 U CN 201922432284U CN 211990920 U CN211990920 U CN 211990920U
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- female die
- piston
- demoulding
- die
- solenoid valve
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Abstract
The utility model relates to an adopt pneumatic control form's bed die control mechanism. The utility model discloses not upwards bounce-back in order to ensure the bed die with cylinder upper portion pressure suitable enlargement, make cylinder lower part piston lower part jar neither admit air nor exhaust simultaneously through gas accuse method, keep the gas capacity of intracavity under the cylinder unchangeable promptly, just so can not make the piston downstream drive bed die move down because of epicoele pressure is big, only can make the bed die remove the trace downwards because of gaseous compressibility, can not influence the die filling of goods and transfer the mould. When demoulding, the demoulding rod drives the lower cross beam to drive the piston to move downwards, when the lower cavity reaches a set liquid flow air pressure value, the liquid flow valve is opened to ventilate, the demoulding rod continues to move downwards to push the piston to normally move downwards to complete the demoulding action, and the problems existing in the original structure are solved.
Description
Technical Field
The utility model relates to an adopt female mould control mechanism of pneumatic control form belongs to powder metallurgy technical field.
Background
The purpose of controlling the female die is to require the female die to stop pressing and keep the position of the female die still before the product is demoulded after pressing is finished, wait for the demoulding rod to move downwards and make the product demoulded from the cavity. After pressing is finished, the upper punch retracts, the female die moves upwards under the action of filling reset force, and at the moment, the upper part of the filling reset cylinder is ventilated to generate downward force to balance the upward filling reset force of the female die, so that the female die is fixed at the original position. This is the process of controlling the balance of the female die, which aims to prevent the female die from moving upwards to cause cracks and form waste products after the products are removed. The balance air pressure is difficult to adjust during actual control and adjustment, the female die is pressed down when the downward force is adjusted too much, and particularly the adjustment of the die is influenced when the filling amount is small, so that the quality of a product after the product is removed is influenced; when the downward force is adjusted too small, the upward rebound of the female die still influences the quality of the product after the product is separated.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned defect, the utility model aims to provide a rational in infrastructure, improve the female die control mechanism of an adoption pneumatic control form of goods quality.
Therefore, the utility model adopts the technical scheme that: a female die control mechanism adopting a pneumatic control mode comprises a female die plate which is used for installing a die and arranged on a die carrier, wherein the female die plate is connected to a die carrier wire connecting plate through a guide pillar; and is connected to the lower beam through a lower T-shaped head and a lower sliding column; the two ends of the lower beam are fixedly connected with the two filling reset cylinders, and the filling reset of the female die plate is completed through the upward driving of the filling reset cylinders;
the filling reset cylinder is connected with a normally open electromagnetic valve and a normally closed electromagnetic valve, the normally open electromagnetic valve and the normally closed electromagnetic valve are arranged in parallel and are respectively connected with a lower cavity and an upper cavity of the filling reset cylinder.
Further, a liquid flow valve is arranged on the normally open electromagnetic valve in parallel.
Further, the PLC is used for programming and controlling the normally open electromagnetic valve and the normally closed electromagnetic valve to be in a normally open state and a normally closed state respectively.
The working process of the female die control mechanism adopting the pneumatic control mode is carried out according to the following processes:
1) the upper punch presses downwards to finish the upper pressing and synchronous pressing, the lower punch does not move the female die plate downwards through the synchronous pressing rod, and the pressing is finished after the final three-pressing, namely the 180-degree position;
2) at the moment, the normally closed electromagnetic valve is electrified and reversed to be opened at the 180-degree position in advance by 5-10 degrees, the upper end of the reset cylinder is filled for ventilation, the pressure of the upper end is slightly greater than the pressure after the lower end is ventilated, and meanwhile, the normally open electromagnetic valve is electrified and reversed to the blocked air outlet end, namely the 180-degree position is set to be advanced by 0-5 degrees;
3) the gas at the lower end of the piston of the cylinder is sealed in the cylinder, at the moment, the piston cannot be pushed to move downwards even if the pressure at the upper end of the piston is slightly higher, namely, the lower cross beam connected to the reset cylinder is stopped at the position and does not move, namely, the female die plate connected to the lower cross beam through the related connecting piece is balanced at the pressing ending position and does not move, and the control that the female die plate does not rebound upwards or downwards is finished;
4) then the demoulding rod moves downwards to push the lower beam 7 to move downwards to start demoulding, at the moment, a cylinder piston connected with the lower beam moves downwards, the sealing gas at the lower part of the cylinder is gradually compressed and enlarged, when the overflow pressure set by the overflow valve is reached, the valve of the overflow valve is opened to exhaust, and the demoulding rod smoothly moves downwards to finish the demoulding process;
5) before the demoulding of 270 degrees is finished, the normally open electromagnetic valve and the normally closed electromagnetic valve act in advance to recover the normally open state and the normally closed state, and the action process enters the next flow.
The utility model has the advantages that: 1) in the past, a mechanical stop block is adopted to prevent the female die from rebounding, the stop position of the female die plate cannot be controlled independently, the female die plate and the stop block are required to be adjusted in a linkage mode, otherwise, mutual interference is generated to crush a machine, and the adjustment and pressing range of a product is limited. The pneumatic control mode is adopted to control the balance of the female die, the control of the reverse bounce of the female die can be independently carried out at any position, the structural form of the reverse bounce of the original mechanical stop female die can be completely replaced, the dead point-free adjustment of product pressing can be realized, and the adjustment and application range of the machine product pressing can be widened.
2) After the pneumatic control form is added, the actual operation difficulty that the original balance pressure cannot be adjusted accurately is solved, the upper pressure of the filling reset cylinder is adjusted slightly, the female die rebound can be effectively prevented, the situation that the female die is pressed down can also be prevented, and the rate of certified products after the pressing and demoulding of products is ensured.
3) Compared with the traditional mechanical balance structure, the pneumatic control method for pneumatically controlling the balance of the female die is simple and convenient in pneumatic control mode, almost has no manufacturing period, can further reduce the labor intensity, and reduces the production, manufacturing, after-sale service and product maintenance cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a portion a of fig. 1.
Fig. 3 is an enlarged view of a portion B of fig. 1.
Detailed Description
The utility model is further explained with the following drawings to better understand the utility model:
before the work begins, the overflow pressure of the liquid flow valve 11 is set to be 0.7-0.8MPa of system pressure, the normally open electromagnetic valve 9 and the normally closed electromagnetic valve 10 are controlled to be in a normally open state and a normally closed state respectively through programming, and the exhaust port of the normally open electromagnetic valve 9 after being changed is blocked by a plug. When the pressing is started, a female die plate 1 of a die frame for installing a die is connected to a die frame wire connecting plate 4 through a guide pillar 2 and is finally connected to a lower cross beam 7 through a lower T-shaped head 5 and a lower sliding pillar 6. Two ends of the lower beam 7 are fixedly connected with 2 filling reset cylinders 8, and the filling reset function of the female die plate 1 is completed by upward driving of the filling reset cylinders 8. At the moment, the upper punch presses downwards to finish the pressing, the synchronous pressing (the lower punch does not move the female die plate 1 downwards through the synchronous pressing rod) and the final pressing, namely the pressing is finished after the three pressing (180-degree position). At the moment, the normally closed electromagnetic valve 10 is electrified and opened in advance by 5-10 degrees at the position of 180 degrees, the upper end of the reset cylinder is filled with air, the pressure of the upper end is slightly larger than the pressure after the lower end is aerated, meanwhile, the normally open electromagnetic valve 9 is electrified and turned to the blocked air outlet end (the position of 180 degrees is advanced by 0-5 degrees), so that the air at the lower end of the piston of the air cylinder is sealed in the air cylinder, the piston cannot be pushed to move downwards even if the pressure at the upper end of the piston is slightly larger, namely, the lower cross beam 7 connected to the reset cylinder is stopped at the position, namely, the female die plate 1 connected to the lower cross beam 7 through a relevant connecting piece is balanced at the pressing ending position and does not move, and. And then the demoulding rod 3 moves downwards to push the lower beam 7 to move downwards to start demoulding, at the moment, a cylinder piston connected with the lower beam 7 moves downwards, the sealing gas at the lower part of the cylinder is gradually compressed and enlarged, when the overflow pressure set by the overflow valve 11 is reached, the valve of the overflow valve 11 is opened to exhaust, and the demoulding rod 3 smoothly moves downwards to finish the demoulding process. Before the demoulding of 270 degrees is finished, the normally open electromagnetic valve 9 and the normally closed electromagnetic valve 10 are operated in advance to recover the normally open state and the normally closed state, and the operation process enters the next flow.
The principle of the control method is that the pressure at the upper part of the cylinder is properly increased to ensure that the female die does not rebound upwards, meanwhile, the lower part of the piston at the lower part of the cylinder is enabled not to intake or exhaust gas through a pneumatic control method, namely, the gas capacity in the lower cavity of the cylinder is kept unchanged, so that the piston does not move downwards to drive the female die to move downwards due to the large pressure of the upper cavity, the female die only slightly moves downwards due to the compressibility of the gas, and the die loading and adjusting of the product are not influenced. When demoulding, the demoulding rod drives the lower cross beam to drive the piston to move downwards, when the lower cavity reaches a set liquid flow air pressure value, the liquid flow valve is opened to ventilate, the demoulding rod continues to move downwards to push the piston to normally move downwards to complete the demoulding action, and the problems existing in the original structure are solved.
Claims (3)
1. A female die control mechanism adopting a pneumatic control mode is characterized by comprising a female die plate (1) which is used for installing a die and arranged on a die carrier, wherein the female die plate (1) is connected to a die carrier wire connecting plate (4) through a guide pillar (2); and is connected to the lower beam (7) through a lower T-shaped head and a lower sliding column (6); two ends of the lower beam (7) are fixedly connected with the two filling reset cylinders (8), and the filling reset of the female die plate (1) is completed through the upward driving of the filling reset cylinders (8);
fill and be connected with normal open solenoid valve (9) and normally closed solenoid valve (10) on reduction cylinder (8), normal open solenoid valve (9) and normally closed solenoid valve (10) parallel arrangement, respectively with fill cavity of reduction cylinder (8), epicoele connection.
2. A die control mechanism in the form of a pneumatic control according to claim 1, characterised in that a fluid valve (11) is arranged in parallel on the normally open solenoid valve (9).
3. A die control mechanism in the form of pneumatic control according to claim 1 characterised in that a PLC is provided to program the normally open solenoid valve (9) and normally closed solenoid valve (10) into a normally open state and a normally closed state respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922432284.2U CN211990920U (en) | 2019-12-30 | 2019-12-30 | Female die control mechanism adopting pneumatic control form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922432284.2U CN211990920U (en) | 2019-12-30 | 2019-12-30 | Female die control mechanism adopting pneumatic control form |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211990920U true CN211990920U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922432284.2U Active CN211990920U (en) | 2019-12-30 | 2019-12-30 | Female die control mechanism adopting pneumatic control form |
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| CN (1) | CN211990920U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610549A (en) * | 2020-12-31 | 2021-04-06 | 扬州市海力精密机械制造有限公司 | Servo control filling system adaptive to feeding process and working process thereof |
| CN113118439A (en) * | 2019-12-30 | 2021-07-16 | 扬州市海力精密机械制造有限公司 | Female die balance control structure of powder forming machine and working process thereof |
-
2019
- 2019-12-30 CN CN201922432284.2U patent/CN211990920U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113118439A (en) * | 2019-12-30 | 2021-07-16 | 扬州市海力精密机械制造有限公司 | Female die balance control structure of powder forming machine and working process thereof |
| CN113118439B (en) * | 2019-12-30 | 2024-04-05 | 扬州市海力精密机械制造有限公司 | Working method of female die balance control structure of powder forming machine |
| CN112610549A (en) * | 2020-12-31 | 2021-04-06 | 扬州市海力精密机械制造有限公司 | Servo control filling system adaptive to feeding process and working process thereof |
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