A differential rapid ejection structure

Abstract

The present invention belongs to the technical field of piston cylinders, and particularly relates to a differential rapid injection structure. The present invention includes a fixed base, on which a piston fixing frame is provided, and on the piston fixing frame, an injection cylinder body is provided, and an injection piston is arranged inside the injection cylinder body. In the injection cylinder body of the present invention, an injection piston and a connecting rod member are provided, and the injection movement is achieved by the movement between the injection piston and the connecting rod member. The differential control component is located inside the injection piston and is sealed by an oil seal. When the differential control component is ejected, the open side of the oil seal is blocked by the differential control component, and at this time, conventional cylinder movement can be carried out. When the differential control component retracts, the open side of the oil seal is opened, and at this time, oil enters simultaneously to achieve common differential movement. Since the original area of the right rod cavity is larger than that of the left side, the piston moves quickly to the left, realizing differential rapid injection, with strong linkage and faster differential injection speed.

Description

Technical Field

[0001] The present invention belongs to the technical field of piston cylinders and relates to a differential rapid ejection structure. Background Art

[0002] Conventional injection mechanisms of injection molding machines all use double-sided single-rod piston cylinders for advancing and retracting. When the cylinder moves, due to the area of the rod chamber being smaller than that of the rodless chamber, it is impossible to quickly supply and discharge oil on both sides simultaneously, and it is impossible to make the piston in the cylinder advance and retreat more efficiently. Therefore, it is extremely necessary to design a differential rapid ejection structure that can selectively link the two oil chambers to achieve differential rapid ejection and controllable speed increase.

[0003] In order to overcome the deficiencies of the prior art, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses an injection mechanism of an injection molding machine [Application No.: 200810059666.9], which includes front and rear guide rod brackets. The front and rear guide rod brackets are equipped with injection table guide rods. There are a front injection table plate and a rear injection table plate on the injection table guide rods. The front injection table plate is connected to the integral movement cylinder assembly and the barrel screw together. The barrel screw is driven by a hydraulic motor and an injection cylinder. The hydraulic motor is connected to the rear injection table plate together. It is characterized in that a linear guide rail is installed at the rear of the front injection table plate, a slider is installed at the lower part of the rear injection table plate, and the slider is matched with the linear guide rail. The hydraulic motor, the injection valve plate assembly, and the injection cylinder are fixed on the rear injection table plate. Summary of the Invention

[0004] The purpose of the present invention is to provide a differential rapid ejection structure for the above problems.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A differential rapid ejection structure includes a fixed base. A piston fixing frame is provided on the fixed base. An ejection cylinder body is provided on the piston fixing frame. An ejection piston is provided in the ejection cylinder body. A connecting rod member is provided on the ejection piston. An oil seal opening side part is provided in the ejection cylinder body. A differential speed control component that can reciprocate linearly is further provided in the ejection piston. The differential speed control component is slidably matched with the inside of the ejection piston, and the position of the differential speed control component corresponds to that of the oil seal opening side part.

[0007] In the above differential rapid ejection structure, the differential speed control component includes a control piston provided in the ejection piston. The position of the control piston corresponds to that of the connecting rod member. A oil blocking member is provided on the control piston. The position of the oil blocking member corresponds to that of the oil seal opening side part.

[0008] In the above-mentioned differential rapid injection structure, the oil blocking member includes an oil blocking ring body disposed on the control piston. An oil inlet portion is provided between the oil blocking ring body and the control piston, and the oil inlet portion corresponds to the position of the oil seal open side portion.

[0009] In the above-mentioned differential rapid injection structure, the oil inlet portion includes an oil inlet cavity groove disposed between the oil blocking ring body and the control piston. The inner diameter of the oil inlet cavity groove is smaller than the outer diameter of the oil blocking ring body, and the oil blocking ring body is in sliding fit with the injection piston.

[0010] In the above-mentioned differential rapid injection structure, a piston driving member is provided on the injection cylinder body, and the piston driving member is connected to the injection piston.

[0011] In the above-mentioned differential rapid injection structure, the piston driving member includes a piston driving oil cylinder disposed on the injection cylinder body. The power shaft of the piston driving oil cylinder is connected to the injection piston, and the injection cylinder body and the piston driving oil cylinder are connected by a connecting frame.

[0012] In the above-mentioned differential rapid injection structure, the oil seal open side portion includes an oil seal open side hole passage disposed in the injection cylinder body, and the oil seal open side hole passage corresponds to the position of the oil inlet cavity groove.

[0013] In the above-mentioned differential rapid injection structure, the connecting rod member includes an injection cylinder piston rod disposed on the injection piston, and the injection cylinder piston rod is disposed opposite to the control piston.

[0014] In the above-mentioned differential rapid injection structure, a cavity is provided between the injection cylinder piston rod and the control piston, and the head of the control piston extends into the cavity.

[0015] In the above-mentioned differential rapid injection structure, a plurality of cylinder clamping plates are provided on the piston fixing frame, and the cylinder clamping plates are in abutting fit with the injection cylinder body.

[0016] Compared with the existing technology, the advantages of the present invention are as follows:

[0017] In the present invention, an injection piston and a connecting rod member are provided in the injection cylinder body. The injection movement is achieved by the movement between the injection piston and the connecting rod member. The differential control assembly is located inside the injection piston and is sealed by an oil seal. When the differential control assembly is ejected, the oil seal open side portion is blocked by the differential control assembly. At this time, the conventional cylinder movement can be performed. When the differential control assembly retracts, the oil seal open side portion is opened, and at this time, oil enters simultaneously to achieve common differential movement. Since the original right rod cavity area is larger than the left side, the piston moves quickly to the left, realizing differential rapid injection, with strong linkage and faster differential injection speed.

[0018] Other advantages, objectives, and features of the present invention will be partially reflected in the following description and partially understood by those skilled in the art through the research and practice of the present invention. Brief Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present invention.

[0020] Figure 2 is a schematic partial structural diagram of the present invention.

[0021] Figure 3 is a schematic partial structural diagram of the present invention in another direction.

[0022] Figure 4 is Figure 3 a schematic cross-sectional view taken along line A-A in

[0023] In the figure: fixed base 1, piston fixing bracket 2, injection cylinder body 3, injection piston 4, connecting rod member 5, oil seal opening side part 6, differential control assembly 7, control piston 8, oil blocking member 9, oil blocking ring body 10, oil inlet part 11, oil inlet cavity 12, piston driving member 13, piston driving oil cylinder 14, connecting frame 15, oil seal opening side hole 16, injection cylinder piston rod 17, cavity 18, cylinder clamping plate 19. Detailed Description of the Invention

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] As Figures 1-4 shown, a differential rapid injection structure includes a fixed base 1. A piston fixing bracket 2 is provided on the fixed base 1. An injection cylinder body 3 is provided on the piston fixing bracket 2. An injection piston 4 is provided in the injection cylinder body 3. A connecting rod member 5 is provided on the injection piston 4. An oil seal opening side part 6 is provided in the injection cylinder body 3. A differential control assembly 7 capable of reciprocating linearly is further provided in the injection piston 4. The differential control assembly 7 is slidably engaged with the inside of the injection piston 4, and the position of the differential control assembly 7 corresponds to that of the oil seal opening side part 6.

[0026] In this embodiment, an injection piston 4 and a connecting rod member 5 are provided in the injection cylinder body 3. The injection movement is achieved by the movement between the injection piston 4 and the connecting rod member 5. The differential control assembly 7 is located inside the injection piston 4 and is sealed by an oil seal. When the differential control assembly 7 is ejected, the oil seal opening side part 6 is blocked by the differential control assembly 7. At this time, conventional cylinder movement can be performed. When the differential control assembly 7 retracts, the oil seal opening side part 6 is opened. At this time, oil enters simultaneously to achieve common differential movement. Since the original area of the right rod cavity is larger than that of the left side, the piston moves quickly to the left, realizing differential rapid injection, with strong linkage and faster differential injection speed.

[0027] Combined with Figures 1-4 As shown, the differential control component 7 includes a control piston 8 disposed within the injection piston 4. The control piston 8 corresponds to the position of the connecting rod member 5, and an oil blocking member 9 is provided on the control piston 8. The oil blocking member 9 corresponds to the position of the oil seal open side portion 6.

[0028] Specifically, an injection piston 4 and a connecting rod member 5 are provided within the injection cylinder block 3. The injection movement is achieved by the movement between the injection piston 4 and the connecting rod member 5. The differential control component 7 is located within the injection piston 4 and is sealed by an oil seal. When the control piston 8 is ejected, the oil seal open side portion 6 is blocked by the oil blocking member 9. At this time, the normal cylinder movement can be carried out. When the differential control piston 8 retracts, the oil seal open side portion 6 is misaligned with the oil blocking member 9, and the oil seal open side portion 6 is opened. At this time, oil enters simultaneously to achieve a common differential movement. Since the original right rod cavity area is larger than the left side, the piston moves quickly to the left, realizing a differential fast injection. The linkage is strong and the differential injection speed is faster.

[0029] Combined with Figure 2 、 Figure 4 As shown, the oil blocking member 9 includes an oil blocking ring body 10 provided on the control piston 8. An oil inlet portion 11 is provided between the oil blocking ring body 10 and the control piston 8. The oil inlet portion 11 corresponds to the position of the oil seal open side portion 6.

[0030] In this embodiment, when the control piston 8 is ejected, the oil seal open side portion 6 is blocked by the oil blocking ring body 10. At this time, the normal cylinder movement can be carried out. When the differential control piston 8 retracts, the oil seal open side portion 6 is misaligned with the oil blocking ring body 10, and the oil seal open side portion 6 is connected to the oil inlet portion 11. At this time, oil enters simultaneously to achieve a common differential movement. Since the original right rod cavity area is larger than the left side, the piston moves quickly to the left, realizing a differential fast injection. The linkage is strong and the differential injection speed is faster.

[0031] The oil inlet portion 11 includes an oil inlet cavity groove 12 provided between the oil blocking ring body 10 and the control piston 8. The inner diameter of the oil inlet cavity groove 12 is smaller than the outer diameter of the oil blocking ring body 10. The oil blocking ring body 10 is in sliding fit with the injection piston 4.

[0032] In this embodiment, when the control piston 8 is ejected, the oil seal open side portion 6 is blocked by the oil blocking ring body 10. At this time, the normal cylinder movement can be carried out. When the differential control piston 8 retracts, the oil seal open side portion 6 is misaligned with the oil blocking ring body 10, and the oil seal open side portion 6 is connected to the oil inlet cavity groove 12. At this time, oil enters simultaneously to achieve a common differential movement. Since the original right rod cavity area is larger than the left side, the piston moves quickly to the left, realizing a differential fast injection. The linkage is strong and the differential injection speed is faster.

[0033] Combined with Figure 2As shown, a piston driving member 13 is provided on the injection oil cylinder body 3, and the piston driving member 13 is connected to the injection piston 4.

[0034] In this embodiment, when it is necessary to drive the injection piston 4, starting the piston driving member 13 can achieve a relatively high degree of automation.

[0035] The piston driving member 13 includes a piston driving oil cylinder 14 provided on the injection oil cylinder body 3. The power shaft of the piston driving oil cylinder 14 is connected to the injection piston 4, and the injection oil cylinder body 3 is connected to the piston driving oil cylinder 14 through a connecting frame 15.

[0036] In this embodiment, when it is necessary to drive the injection piston 4, starting the piston driving oil cylinder 14 can drive the injection piston 4 to move through the power shaft of the piston driving oil cylinder 14, achieving a relatively high degree of automation. The connection between the injection oil cylinder body 3 and the piston driving oil cylinder 14 through the connecting frame 15 has a good fixing effect.

[0037] The oil seal open side part 6 includes an oil seal open side hole 16 provided in the injection oil cylinder body 3, and the position of the oil seal open side hole 16 corresponds to that of the oil inlet cavity 12.

[0038] In this embodiment, when the control piston 8 is pushed out, the oil seal open side hole 16 is blocked by the oil blocking ring body 10. At this time, the conventional cylinder movement can be carried out. When the differential control piston 8 retracts, the oil seal open side hole 16 is misaligned with the oil blocking ring body 10, and the oil seal open side hole 16 is connected to the oil inlet cavity 12. At this time, oil enters simultaneously to achieve common differential movement. Since the original right side rod cavity area is larger than the left side, the piston moves quickly to the left to achieve differential rapid injection, with strong linkage and faster differential injection speed.

[0039] Combined with Figure 4 As shown, the connecting rod member 5 includes an injection cylinder piston rod 17 provided on the injection piston 4, and the injection cylinder piston rod 17 is disposed opposite to the control piston 8.

[0040] In this embodiment, the injection movement is achieved by the movement between the injection piston 4 and the injection cylinder piston rod 17.

[0041] Combined with Figure 1 、 Figure 4 As shown, a cavity 18 is provided between the injection cylinder piston rod 17 and the control piston 8, and the head of the control piston 8 extends into the cavity 18.

[0042] In this embodiment, a cavity 18 is provided between the injection cylinder piston rod 17 and the control piston 8, with a reasonable structure and no collision occurring.

[0043] Combined with Figure 1As shown, a plurality of cylinder body clamping plates 19 are provided on the piston fixing bracket 2, and the cylinder body clamping plates 19 are in abutting cooperation with the injection cylinder body 3.

[0044] In this embodiment, the cylinder body clamping plates 19 can fixedly clamp both ends of the injection cylinder body 3, and the stability is relatively good.

[0045] The working principle of the present invention is:

[0046] An injection piston 4 and an injection cylinder piston rod 17 are provided in the injection cylinder body 3. The injection movement is achieved by the movement between the injection piston 4 and the injection cylinder piston rod 17. The control piston 8 is located inside the injection piston 4 and is sealed by an oil seal. When the control piston 8 is pushed out, the oil seal open side channel 16 is blocked by the oil blocking ring body 10. At this time, the conventional cylinder movement can be carried out. When the differential control piston 8 retracts, the oil seal open side channel 16 is misaligned with the oil blocking ring body 10, and the oil seal open side channel 16 is connected to the oil inlet cavity groove 12. At this time, oil enters simultaneously to achieve common differential movement. Since the original right rod cavity area is larger than the left side, the piston moves quickly to the left to achieve differential fast injection. The linkage is strong and the differential injection speed is faster.

[0047] When it is necessary to drive the injection piston 4, the piston drive oil cylinder 14 is started, and the injection piston 4 is driven to move by the power shaft of the piston drive oil cylinder 14. The automation degree is relatively high. The injection cylinder body 3 and the piston drive oil cylinder 14 are connected by a connecting frame 15, and the fixing effect is relatively good.

[0048] The injection movement is achieved by the movement between the injection piston 4 and the injection cylinder piston rod 17. There is a cavity 18 between the injection cylinder piston rod 17 and the control piston 8. The structure is reasonable and no collision will occur.

[0049] The cylinder body clamping plates 19 can fixedly clamp both ends of the injection cylinder body 3, and the stability is relatively good.

[0050] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention.

[0051] Although terms such as fixed base 1, piston fixing bracket 2, injection cylinder body 3, injection piston 4, connecting rod member 5, oil seal opening side portion 6, differential control assembly 7, control piston 8, oil blocking member 9, oil blocking ring body 10, oil inlet portion 11, oil inlet cavity groove 12, piston driving member 13, piston driving oil cylinder 14, connecting frame 15, oil seal opening side hole passage 16, injection cylinder piston rod 17, cavity 18, cylinder body clamping plate 19 are used more frequently in this text, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present invention, and interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A differential rapid injection structure, comprising a fixed base (1), characterized in that, A piston fixing frame (2) is provided on the fixed base (1). An injection oil cylinder body (3) is provided on the piston fixing frame (2). An injection piston (4) is provided in the injection oil cylinder body (3). A connecting rod member (5) is provided on the injection piston (4). An oil seal opening side part (6) is provided in the injection oil cylinder body (3). A differential speed control component (7) capable of reciprocating linearly is further provided in the injection piston (4). The differential speed control component (7) is slidably matched with the inside of the injection piston (4). The position of the differential speed control component (7) corresponds to that of the oil seal opening side part (6). The differential speed control component (7) includes a control piston (8) provided in the injection piston (4). The position of the control piston (8) corresponds to that of the connecting rod member (5). A oil blocking member (9) is provided on the control piston (8). The position of the oil blocking member (9) corresponds to that of the oil seal opening side part (6). The oil blocking member (9) includes an oil blocking ring body (10) provided on the control piston (8). An oil inlet part (11) is provided between the oil blocking ring body (10) and the control piston (8). The position of the oil inlet part (11) corresponds to that of the oil seal opening side part (6). The oil inlet part (11) includes an oil inlet cavity (12) provided between the oil blocking ring body (10) and the control piston (8). The inner diameter of the oil inlet cavity (12) is smaller than the outer diameter of the oil blocking ring body (10). The oil blocking ring body (10) is slidably matched with the injection piston (4). The differential speed control component (7) is located inside the injection piston (4) and is sealed by an oil seal. A plurality of cylinder body clamping plates (19) are provided on the piston fixing frame (2). The cylinder body clamping plates (19) are in abutting cooperation with the injection oil cylinder body (3).

2. The differential rapid injection structure according to claim 1, wherein, A piston driving member (13) is provided on the injection oil cylinder body (3). The piston driving member (13) is connected to the injection piston (4).

3. The differential rapid ejection structure according to claim 2, wherein, The piston driving member (13) includes a piston driving oil cylinder (14) provided on the injection oil cylinder body (3). The power shaft of the piston driving oil cylinder (14) is connected to the injection piston (4). The injection oil cylinder body (3) is connected to the piston driving oil cylinder (14) through a connecting frame (15).

4. A differential rapid ejection structure according to claim 3, characterized in that, The oil seal opening side part (6) includes an oil seal opening side hole (16) provided in the injection oil cylinder body (3). The position of the oil seal opening side hole (16) corresponds to that of the oil inlet cavity (12).

5. A differential rapid ejection structure according to claim 4, characterized in that, The connecting rod member (5) includes an injection cylinder piston rod (17) provided on the injection piston (4). The injection cylinder piston rod (17) is arranged opposite to the control piston (8).

Images