Mold capable of preventing ejection deformation

Abstract

The utility model relates to the field of mould forming, and discloses an anti-ejection deformation mould, which comprises a stamping mechanism, a support frame and a plurality of driven mechanisms, the stamping mechanism comprises a shell, a lower mould is fixedly arranged on the inner side of the shell, and separating rods are arranged in the shell close to the front and the back in a penetrating and sliding manner; a separation frame is fixedly arranged between the lower ends of the parts, close to the inner side area of the lower mold, of the two separation rods, first springs are arranged between the lower ends of the two separation rods and the shell, fixing columns are arranged at the positions, close to the front side and the rear side, of the interior of the shell in a penetrating mode, and limiting plates are arranged at the positions, close to the front side and the rear side, of the interior of the shell in a penetrating mode. According to the utility model, the device has a wall scraping separation function, a finished product can be separated from the inner wall of the lower mold firstly and then the finished product is ejected out immediately, so that the defective rate of the finished product is greatly reduced, the wall scraping separation and the ejection work only need to be provided with an air pump, redundant equipment is not required to be additionally arranged for providing power, and the cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of mould forming, especially a mould preventing deformation in ejection. BACKGROUND

[0002] The mould is a manufacturing tool using stamping forming and injection moulding, and is usually extruded by upper and lower moulds. When the mould is used, the finished product needs to be taken out in time, and the ejector plate is a tool for rapid demoulding. After the upper mould is removed, the ejector plate can separate the finished product from the lower mould for easy taking out.

[0003] Many existing moulds have ejector plates, but it is difficult to ensure that the finished product will not deform during ejection. Some ejector plates only act on the bottom end of the finished product, and the finished product and the lower mould may be closely connected after stamping forming. Due to this factor, the finished product is prone to deformation. The existing moulds cannot separate the finished product from the inner wall of the lower mould before ejection, resulting in a high rate of defective finished products in production, which seriously affects the qualified rate and reduces the production efficiency.

[0004] Therefore, the skilled person in the art provides a mould preventing deformation in ejection to solve the problems in the background. SUMMARY

[0005] The utility model discloses a mould preventing deformation in ejection, which has a wall scraping and separating function. The finished product can be separated from the inner wall of the lower mould before ejection, greatly reducing the rate of defective finished products. The wall scraping and separating and ejection only need one air pump, without the need for additional equipment to provide power, saving cost.

[0006] To achieve the above object, the utility model provides the following technical scheme: a mould preventing deformation in ejection, comprising a stamping mechanism, a support frame and a plurality of driven mechanisms, the stamping mechanism comprising a shell, a lower mould being fixedly arranged on the inner side of the shell, a separation rod being slidably arranged at the front and rear of the shell, a separation frame being fixedly arranged between the lower ends of the two separation rods near the inner side area of the lower mould, a first spring being arranged between the lower ends of the two separation rods and the shell, a fixed column being arranged at the front and rear sides of the shell, a limiting plate being arranged at the front and rear sides of the shell, a slide column being fixedly arranged on the upper end of each limiting plate, a lower pressing block being slidably sleeved on the circumference of each slide column, a pull rope being arranged above the rear end of each lower pressing block, a top block being fixedly arranged between the ends of the pull ropes away from the lower pressing blocks, and an upper ejector plate being fixedly arranged on the upper end of the top block.

[0007] The plurality of driven mechanisms each comprise a fixed body, a pawl is connected to the fixed body by a spring shaft at one side, and a second spring is arranged between the pawl and the fixed body.

[0008] Further, the two separation rods are each divided into two parts, one part is inside the shell, and the other part is inside the lower die, and the separation frame has a relatively thin thickness.

[0009] Further, the two separation rods are each divided into two parts, one part is inside the shell, and the other part is inside the lower die, and the separation frame has a relatively thin thickness.

[0010] Further, the plurality of pressing blocks are each arranged in sliding mode inside the shell, and the upper ends of the plurality of slide columns are in contact with the inside of the shell.

[0011] Further, the separation frame is closely arranged at the gap between the upper top plate and the lower die, and the top block and the upper top plate are hollowed in the middle and have a relatively light texture.

[0012] Further, when the plurality of driven mechanisms rise, the pawls will not be in contact with the limiting plate, and the pawls will only be in contact with the upper pressing blocks.

[0013] Further, the support frame is divided into a bottom plate, a middle plate and an upper plate, the stamping mechanism is fixedly arranged at the center of the upper end of the middle plate of the support frame, the air pump is fixedly arranged at the upper end of the bottom plate of the support frame on the other side, the hydraulic cylinder is arranged at the upper end of the upper plate of the support frame on the center, and the upper die is fixedly arranged at the output end of the hydraulic cylinder.

[0014] Further, the output end of the air pump is provided with an air pipe, the air pipe penetrates into the inside of the shell, and the air outlet of the air pipe is located below the two separation rods.

[0015] The utility model has the following beneficial effects:

[0016] 1. The mold of the utility model discloses a kind of anti-ejection deformation, after completing stamping forming process, air pump can be started, air pump is sent to the inside of shell from air pipe, which can promote separation rod to rise, the rising of separation rod further drives separation frame to rise, separation frame can quickly separate from lower die inner wall after forming finished product, prevent that finished product after stamping is too close with lower die inner wall, after separation, it can be guaranteed that finished product will not be deformed in the process of ejection, greatly reduce the rate of defective product of finished product in mass production, improve production efficiency.

[0017] 2. The utility model provides a kind of mould of anti-ejection deformation, during the process of the separation rod being driven by air pump and moving up, driven mechanism fixed on the separation rod will contact with the lower pressing block, at this time, pawl will be bent downward, then pawl moves up to above the lower pressing block, after air pump stops inputting gas, the reset of No. 1 spring will pull pawl to move down quickly, it will drive the lower pressing block to move down together, the movement of the lower pressing block will improve the pull rope and fixed column drive top block and upper top plate to move up, so that the finished product after wall scraping separation is ejected, when the lower pressing block reaches limit plate, due to the slope on the lower pressing block and pawl, pawl will move inward and extrude No. 2 spring, at this time, due to the weight of upper top plate and top block itself, the lower pressing block will move up again, to facilitate next use, the ejection work cooperates with wall scraping separation work, without adding extra equipment to provide power, save cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the front view axonometric diagram of the utility model;

[0019] Figure 2 It is the front view diagram of the utility model;

[0020] Figure 3 It is the front view axonometric diagram of the area close to the separation rod of the utility model;

[0021] Figure 4 It is the front view partial section diagram of the utility model;

[0022] Figure 5 It is the front view axonometric diagram of the area close to the air pipe of the utility model;

[0023] Figure 6 It is the front view diagram of the utility model; Figure 5 It is the enlarged diagram of place A of the utility model.

[0024] LEGEND:

[0025] 1, punch mechanism;2, hydraulic cylinder;3, air pump;4, support frame;5, upper die;6, driven mechanism;7, air pipe;101, shell;102, lower die;103, separation rod;104, pull rope;105, top block;106, slide column;107, limit plate;108, No. 1 spring;109, separation frame;110, lower pressing block;111, fixed column;112, upper top plate;601, No. 2 spring;602, fixed body;603, pawl. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0027] With reference to Figure 1 , Figure 2 and Figure 3 , the utility model provides an embodiment: a kind of mould of preventing top out deformation, including stamping mechanism 1, support frame 4 and multiple driven mechanisms 6, support frame 4 is divided into three parts of bottom plate, middle plate and upper plate, stamping mechanism 1 is fixedly arranged in the middle plate upper end center of support frame 4, the bottom plate upper end of support frame 4 is fixedly arranged with air pump 3 in another side, the upper plate upper end of support frame 4 is arranged with hydraulic cylinder 2 in center, and the output end of hydraulic cylinder 2 is fixedly arranged with upper die 5, the output end of air pump 3 is provided with air pipe 7, air pipe 7 is penetrated to the inside of shell 101, and the gas outlet of air pipe 7 is located below two separation rods 103.

[0028] Specifically, support frame 4 mainly provides support capacity, upper die 5 is located directly above lower die 102, and is driven to move downward by hydraulic cylinder 2, air pump 3 outputs high flow rate gas into air pipe 7, the gas in air pipe 7 is divided into two directions and is input into stamping mechanism 1 respectively, and the effect of scraping wall separation and finished product ejection can be realized by inputting gas once, the rejection rate is low after finished product ejection, and it is simple to operate and cost-saving.

[0029] With reference to Figures 2 to 6 , stamping mechanism 1 includes shell 101, the inside of shell 101 is fixedly provided with lower die 102, the inside of shell 101 is slidably provided with separation rod 103 near front and back, separation frame 109 is fixedly arranged between the lower end of the inner side area part of the two separation rods 103 close to lower die 102, a spring 108 is arranged between the lower end of the two separation rods 103 and shell 101, fixed column 111 is arranged through the inside of shell 101 near front and back, limit plate 107 is arranged through the inside of shell 101 near front and back, sliding column 106 is fixedly arranged on the upper end of multiple limit plates 107, lower pressing block 110 is slidably sleeved on the periphery of multiple sliding columns 106, pull rope 104 is arranged on the rear end of multiple lower pressing blocks 110, top block 105 is fixedly arranged between the one end of multiple pull ropes 104 away from lower pressing block 110, and top plate 112 is fixedly arranged on the upper end of top block 105.

[0030] Two separation rods 103 are divided into two parts, one part is inside the shell 101, and the other part is inside the lower mold 102, the separation frame 109 is thin, the lower end of the two separation rods 103 inside the shell 101 is fixedly provided with a baffle, the baffle is consistent with the internal space size of the shell 101, a plurality of pressing blocks 110 are slidably arranged inside the shell 101, the upper end of the plurality of slide columns 106 is in contact with the inside of the shell 101, the separation frame 109 is tightly arranged at the gap between the upper top plate 112 and the lower mold 102, the top block 105 and the upper top plate 112 are hollow in the middle, which is relatively light, when the plurality of driven mechanisms 6 rises, the pawl 603 will not contact the limiting plate 107, and the plurality of pawls 603 will only contact the upper pressing block 110;

[0031] Specifically, the pawl 603 is in a horizontal state in a normal state, when the upper end of the pawl 603 is in contact with and extruded by the lower end of the pressing block 110, the pawl 603 will be bent downward, when the pawl 603 moves downward together with the pressing block 110, the pawl 603 is attached to the slope of the pressing block 110, the elastic force of the second spring 601 is strong enough, when the pressing block 110 does not reach the limiting plate 107, the pawl 603 will not be retracted into the fixed body 602, when the pressing block 110 reaches the limiting plate 107, the pawl 603 is elastically constrained by the first spring 108, and the continuous downward movement of the pawl 603 will move into the fixed body 602 and extrude the second spring 601, the top block 105 and the upper top plate 112 are light enough, and the reset work of the first spring 108 is enough to drive the pressing block 110 to move downward through the pawl 603, and the top block 105 and the upper top plate 112 are pulled up through the pull rope 104.

[0032] Referring to Figure 5 and Figure 6 , the plurality of driven mechanisms 6 each include a fixed body 602, a plurality of pawls 603 are connected to the fixed body 602 by a spring shaft on one side, and a second spring 601 is arranged between the pawl 603 and the fixed body 602.

[0033] Specifically, when the pawl 603 rotates downward by 90°, it can quickly reset due to the internal spring shaft, and the plurality of driven mechanisms 6 are arranged on the two separation rods 103, which rise with the separation rods 103 and do not affect the sealing of the internal space.

[0034] Working principle: after the device drives the upper die 5 to complete the stamping forming, the air pump 3 can be started, the air pump 3 will generate high flow rate of airflow from the air pipe 7 into the inside of the two separation rods 103 below the shell 101, the separation rod 103 is attached to the inner wall of the shell 101, at this time, the two separation rods 103 will be synchronized with the separation frame 109 to move up, the stamping product can be separated from the inner wall of the lower die 102, the upward movement of the two separation rods 103 will move the driven mechanism 6 together, in the process of upward movement, the upper end of the pawl 603 will preferentially contact the lower end of the pressing block 110, at this time, since the pawl 603 continues to move upward, it will bend downward, after reaching the upper side of the pressing block 110, it is reset through the spring shaft, after the wall scraping and separation are completed, when the two separation rods 103 reach the highest point in the inside of the shell 101, the input of the gas is stopped, at this time, the first spring 108 starts to reset, the two separation rods 103 will move downward with the pawl 603, the downward movement of the pawl 603 will move the corresponding pressing block 110 downward, when the pressing block 110 reaches the limiting plate 107, since the pawl 603 continues to move downward, the pawl 603 will move to the inside of the fixed body 602 and press the second spring 601, the downward movement of the pressing block 110 will drive the top block 105 and the upper top plate 112 to move upward through the pull rope 104, at this time, the finished product after the wall scraping and separation can be ejected from the lower die 102.

[0035] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A die for preventing ejection deformation, comprising a punch mechanism (1), a support frame (4) and a plurality of driven mechanisms (6), characterized in that: The stamping mechanism (1) comprises a shell (101), a lower mold (102) is fixedly arranged inside the shell (101), separation rods (103) are slidably arranged at the front and rear inside the shell (101), a separation frame (109) is fixedly arranged between the lower ends of the two separation rods (103) near the inner side area of the lower mold (102), a first spring (108) is arranged between the lower ends of the two separation rods (103) and the shell (101), fixed columns (111) are arranged at the front and rear sides inside the shell (101), limiting plates (107) are arranged at the front and rear sides inside the shell (101), a plurality of slide columns (106) are fixedly arranged on the upper ends of the limiting plates (107), lower pressing blocks (110) are slidably arranged on the slide columns (106), pull ropes (104) are arranged on the upper ends of the lower pressing blocks (110), a top block (105) is fixedly arranged between the ends of the pull ropes (104) away from the lower pressing blocks (110), and an upper top plate (112) is fixedly arranged on the upper end of the top block (105). The plurality of driven mechanisms (6) each comprise a fixed body (602), a ratchet pawl (603) is connected to one side of the fixed body (602) through a spring shaft, and a second spring (601) is arranged between the ratchet pawl (603) and the fixed body (602).

2. A mold for preventing ejection deformation according to claim 1, wherein: The two separation rods (103) are each divided into two parts, one part is inside the shell (101), and the other part is inside the lower mold (102), and the separation frame (109) has a relatively thin frame body.

3. The mold of claim 1, wherein: The lower ends of the two separation rods (103) inside the shell (101) are each fixedly provided with a baffle, and the baffle has the same size as the internal space of the shell (101).

4. The ejecting-preventing and deformation-premitting mold according to claim 1, wherein: The plurality of lower pressing blocks (110) are slidably arranged inside the shell (101), and the upper ends of the plurality of slide columns (106) are in contact with the inside of the shell (101).

5. The ejecting-preventing and deformation-premitting mold according to claim 1, wherein: The separation frame (109) is closely arranged at the gap between the upper top plate (112) and the lower mold (102), and the top block (105) and the upper top plate (112) are hollowed in the middle and have a relatively light texture.

6. The ejecting-preventing and deformation-premitting mold according to claim 1, wherein: When the plurality of driven mechanisms (6) are rising, the ratchet pawls (603) will not be in contact with the limiting plates (107), and the plurality of ratchet pawls (603) will only be in contact with the lower pressing blocks (110) above.

7. The ejecting-preventing and deformation-premitting mold according to claim 1, wherein: The support frame (4) is divided into a bottom plate, a middle plate and an upper plate, the stamping mechanism (1) is fixedly arranged at the center of the upper end of the middle plate of the support frame (4), the air pump (3) is fixedly arranged at the other side of the upper end of the bottom plate of the support frame (4), the hydraulic cylinder (2) is arranged at the center of the upper end of the upper plate of the support frame (4), and the output end of the hydraulic cylinder (2) is fixedly provided with an upper mold (5).

8. A mold for preventing ejection deformation according to claim 7, wherein: The output end of the air pump (3) is provided with an air pipe (7), the air pipe (7) penetrates into the inside of the shell (101), and the air outlet of the air pipe (7) is located below the two separation rods (103).

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