Pneumatic switching mechanism

Abstract

The utility model discloses a pneumatic switching mechanism, and belongs to the technical field of automobile punching dies. The device mainly comprises a base plate; the outer frame is installed at the upper end of the base plate, and a movable groove is formed in the upper end face of the outer frame; the sliding block is connected into the movable groove in a sliding mode, the sliding block is used for installing a forming insert, and a matching block is arranged on the lower surface of the sliding block; the driving block is located between the sliding block and the base plate, a matching groove is formed in the upper surface of the driving block, and the matching block is matched with the matching groove; and the air cylinder assembly is used for pushing the driving block to move, the air cylinder assembly is provided with a mounting shell, a movable cavity is formed in the mounting shell, a main piston rod is slidably connected into the movable cavity and protrudes out of the movable cavity and the mounting shell, and a first clamping groove and a second clamping groove are formed in the outer side of the main piston rod. According to the pneumatic switching mechanism, the self-locking function of the pneumatic switching mechanism in the stretching-out state and the returning state at the same time is achieved, and the switching efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile stamping dies, and in particular to a pneumatic switching mechanism. Background Art

[0002] In the automotive mold stamping process, the pneumatic switching mechanism is an indispensable part of the stamping die. In actual use, the pneumatic switching mechanism is usually fixed in the upper die of the mold, or installed on other mechanisms in the mold as a punch function, such as on a wedge or other mechanisms.

[0003] During the use of the pneumatic switching mechanism, if a fault occurs, it will affect the supporting force of the pneumatic switching mechanism. For example, when the switching mechanism is in the extended state, a fault occurs and the air is cut off and there is no power source, and the driving block therein retreats, resulting in switching failure; and when the switching mechanism is in the retracted state, a fault occurs and the air is cut off and there is no power source, and inertia falls, causing the insert installed on the mechanism to bump into the sheet, causing the sheet to be scrapped, thereby affecting the stamping work;

[0004] However, although traditional pneumatic switching mechanisms also use self-locking cylinders to solve this problem, self-locking cylinders are expensive, have a long procurement cycle, and cannot have self-locking functions in both the extended and retracted states, so it is necessary to provide a pneumatic switching mechanism to solve the above problems.

[0005] It should be noted that the above information disclosed in this Background section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute prior art. Summary of the Invention

[0006] Based on the above problems existing in the prior art, the problem to be solved by this application is: to provide a pneumatic switching mechanism that achieves the self-locking function of the pneumatic switching mechanism in both the extended state and the retracted state, thereby improving the switching efficiency.

[0007] The technical solution adopted by the present application to solve the technical problem is: a pneumatic switching mechanism, comprising:

[0008] pad;

[0009] An outer frame is mounted on the upper end of the backing plate, and a movable groove is formed on the upper end surface of the outer frame;

[0010] A slider, which is slidably connected to the movable groove and is used to install the molding insert, and a matching block is provided on the lower surface of the slider;

[0011] A driving block, the driving block being located between the slider and the pad, the upper surface of the driving block being provided with a matching groove, the matching block and the matching groove matching each other;

[0012] A cylinder assembly is used to push the driving block to move, the cylinder assembly having a mounting shell, an active cavity is provided inside the mounting shell, a main piston rod is slidably connected to the active cavity, the main piston rod protrudes from the active cavity and the mounting shell, and a first engaging groove and a second engaging groove are provided on the outer side of the main piston rod, the first engaging groove is provided above the second engaging groove;

[0013] A first chamber is provided above one side of the movable chamber, and a first piston rod is slidably connected to the interior of the first chamber, and the first piston rod is arranged toward the direction of the main piston rod;

[0014] A second chamber is provided above the other side of the movable chamber, and a second piston rod is slidably connected to the interior of the second chamber. The second piston rod is provided in the direction of the main piston rod.

[0015] Furthermore, a first air port and a second air port are formed on both sides of the lower end of the first chamber, and the first piston rod is located between the first air port and the second air port.

[0016] Furthermore, a third air port and a fourth air port are formed on both sides of the lower end of the second chamber, and the second piston rod is located between the third air port and the fourth air port.

[0017] Furthermore, a first gas pipeline is provided below the first chamber. The first gas pipeline has three groups of gas outlet ends, which are respectively connected to the first gas port, the third gas port and the bottom of the active cavity.

[0018] Furthermore, a second gas pipeline is provided below the second chamber, and the second gas pipeline has three groups of gas outlet ends, which are respectively connected to the fourth gas port, the second gas port and the top of the active chamber.

[0019] The beneficial effect of the present application is that the present application provides a pneumatic switching mechanism, which is equipped with a cylinder assembly. When the main piston rod is in an extended state, the main piston rod is locked by the first piston rod, and when the main piston rod is in a retracted state, the main piston rod is locked by the second piston rod, thereby realizing that the pneumatic switching mechanism has a self-locking function in both the extended state and the retracted state, thereby improving the switching efficiency and ensuring the stamping work.

[0020] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0022] Figure 1 This is an overall schematic diagram of a pneumatic switching mechanism in this application;

[0023] Figure 2 for Figure 1 Schematic diagram of the overall structure;

[0024] Figure 3 for Figure 1 Schematic diagram of different states of the slider movement;

[0025] Figure 4 for Figure 3 A separate enlarged schematic diagram of the middle cylinder assembly;

[0026] Figure 5 for Figure 4 Schematic diagram of ventilation of the first gas transmission pipeline;

[0027] Figure 6 for Figure 4 Schematic diagram of ventilation of the second gas pipeline;

[0028] Among them, the reference numerals in the figures are:

[0029] 1. Backing plate; 11. Driving block; 12. Matching groove; 13. Cylinder connecting block;

[0030] 2. Outer frame; 21. Movable slot; 22. Slider; 23. Matching block;

[0031] 3. Cylinder assembly; 31. Mounting shell; 32. Active chamber; 33. Main piston rod; 331. First engaging groove; 332. Second engaging groove; 34. First chamber; 341. First air port; 342. Second air port; 35. First piston rod; 36. Second chamber; 361. Third air port; 362. Fourth air port; 37. Second piston rod; 38. First gas pipeline; 39. Second gas pipeline. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] In order to make the person skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0034] As shown in Figure 1-Figure 3 The present application provides a kind of pneumatic switching mechanism, including pad 1, the upper end of the pad 1 is fixedly installed with outer frame 2, the upper end surface of the outer frame 2 is opened with movable slot 21, and the movable slot 21 is slidably connected with slider 22, the upper end of the slider 22 is set as circular mounting surface, and it can be installed into shaped inlay, punch or other functional stamping components on the circular mounting surface.

[0035] In order to facilitate the operation of slider 22 in movable slot 21 to slide up and down, the upper end of the pad 1 is slidably connected with driving block 11, the driving block 11 is located between slider 22 and pad 1, and the side of the driving block 11 is provided with cylinder assembly 3, and cylinder connecting block 13 is fixedly installed between cylinder assembly 3 and driving block 11, and the cylinder assembly 3 is used to push cylinder connecting block 13 to move, so that driving block 11 moves;

[0036] Meanwhile, the upper surface of the driving block 11 is opened with cooperation slot 12, and the lower surface of the slider 22 is opened with cooperation block 23, and the cooperation block 23 and the cooperation slot 12 are matched with each other, and in the present application, when the cooperation block 23 and the cooperation slot 12 are matched with each other, the slider 22 is attached to the driving block 11 at this time, and when the cooperation block 23 and the cooperation slot 12 intersect, the cooperation block 23 is located on the surface of the driving block 11 at this time, so the slider 22 will protrude from the surface of movable slot 21.

[0037] It should be noted that, in order to facilitate the quick cooperation of cooperation block 23 and cooperation slot 12, the two ends of cooperation block 23 and cooperation slot 12 are provided with inclined surface.

[0038] As shown in Figure 4-Figure 6 The cylinder assembly 3 has installation shell 31, the inside of the installation shell 31 is provided with movable cavity 32, the movable cavity 32 is slidably connected with main piston rod 33, the main piston rod 33 protrudes from movable cavity 32 and installation shell 31, and the outer side of the main piston rod 33 is opened with first clamping groove 331 and second clamping groove 332, and the first clamping groove 331 is arranged above the second clamping groove 332;

[0039] At the same time, a first chamber 34 is provided above one side of the movable chamber 32. A first piston rod 35 is slidably connected to the interior of the first chamber 34. The first piston rod 35 is arranged toward the main piston rod 33. A first air port 341 and a second air port 342 are provided on both sides of the lower end of the first chamber 34. In the present application, the first piston rod 35 is initially located between the first air port 341 and the second air port 342.

[0040] Furthermore, a second chamber 36 is provided above the other side of the movable chamber 32. A second piston rod 37 is slidably connected to the interior of the second chamber 36. The second piston rod 37 is arranged toward the main piston rod 33. A third air port 361 and a fourth air port 362 are provided on both sides of the lower end of the second chamber 36. In the present application, the second piston rod 37 is initially located between the third air port 361 and the fourth air port 362.

[0041] It should be noted that when the main piston rod 33 retracts into the active cavity 32 (i.e., in the initial state), the first engaging groove 331 is located between the first piston rod 35 and the second piston rod 37. When the main piston rod 33 extends out of the active cavity 32, the second engaging groove 332 is located between the first piston rod 35 and the second piston rod 37. This facilitates the engagement of the main piston rod 33 by the first piston rod 35 and the second piston rod 37.

[0042] In order to transport gas to the first chamber 34, the second chamber 36 and the active chamber 32, a first gas pipeline 38 is provided below the first chamber 34. Figure 5 As shown, the first gas pipeline 38 has three gas outlet ends, which are respectively connected to the first gas port 341, the third gas port 361, and the bottom of the active chamber 32. Therefore, when the first gas pipeline 38 delivers gas, it pushes the main piston rod 33 upward and simultaneously pushes the first piston rod 35 toward the main piston rod 33, while the second piston rod 37 moves away from the main piston rod 33.

[0043] Furthermore, a second gas pipeline 39 is provided below the second chamber 36. Figure 6 As shown, the second gas pipeline 39 has three sets of gas outlet ends, which are respectively connected to the fourth gas port 362, the second gas port 342 and the top of the active chamber 32. Therefore, when the second gas pipeline 39 delivers gas, it will push the main piston rod 33 downward and push the second piston rod 37 toward the main piston rod 33, while the first piston rod 35 moves away from the main piston rod 33.

[0044] To summarize, when the switching mechanism is used for switching operations, air is first ventilated to the first air supply pipe 38. After the gas enters the movable chamber 32, it pushes the main piston rod 33 upward. When the main piston rod 33 moves, it pushes the cylinder connecting block 13 and the driving block 11 forward, causing the mating groove 12 to disengage from the mating block 23. At the same time, the mating block 23 moves upward along the inclined surface in the movable groove 21 until it reaches above the driving block 11, thereby pushing out the insert installed above the slider 22.

[0045] When the first gas pipeline 38 is ventilated, gas enters from the first gas port 341 to push the first piston rod 35 toward the main piston rod 33, causing it to move simultaneously until it is engaged in the second engaging groove 332. At the same time, gas enters the third gas port 361 to push the second piston rod 37 away from the main piston rod 33. At this time, the ventilation of the first gas pipeline 38 is stopped, so that when the main piston rod 33 is in the extended state, the main piston rod 33 is locked by the first piston rod 35.

[0046] When the insert above the slider 22 needs to be retracted, air is supplied to the second air supply pipe 39. The air enters the active chamber 32 and pushes the main piston rod 33 downward, which in turn drives the driving block 11 to move in the opposite direction until the mating block 23 is engaged with the mating groove 12, thereby retracting the insert installed above the slider 22.

[0047] When the second gas pipeline 39 is ventilated, the gas will push the second piston rod 37 toward the main piston rod 33 from the fourth gas port 362 until it is stuck in the first engaging groove 331. At the same time, the gas enters the second gas port 342 to push the first piston rod 35 away from the main piston rod 33. At this time, the ventilation of the second gas pipeline 39 is stopped, so that when the main piston rod 33 is in the retracted state, the main piston rod 33 is locked by the second piston rod 37, so that the pneumatic switching mechanism has the self-locking function in both the extended state and the retracted state, thereby improving the switching efficiency and ensuring the stamping work.

[0048] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A pneumatic switching mechanism, characterized in that: include: Pad (1); An outer frame (2), the outer frame (2) being mounted on the upper end of the backing plate (1), and a movable groove (21) being provided on the upper end surface of the outer frame (2); A slider (22), the slider (22) is slidably connected in the movable groove (21), the slider (22) is used to install the molding insert, and a matching block (23) is provided on the lower surface of the slider (22); A driving block (11), the driving block (11) being located between the slider (22) and the pad (1), a matching groove (12) being provided on an upper surface of the driving block (11), and the matching block (23) and the matching groove (12) being matched with each other; A cylinder assembly (3) is used to push the driving block (11) to move, the cylinder assembly (3) having a mounting shell (31), an active cavity (32) being provided inside the mounting shell (31), a main piston rod (33) being slidably connected inside the active cavity (32), the main piston rod (33) protruding from the active cavity (32) and the mounting shell (31), a first engaging groove (331) and a second engaging groove (332) being provided on the outer side of the main piston rod (33), the first engaging groove (331) being provided above the second engaging groove (332); A first chamber (34) is provided above one side of the movable chamber (32), a first piston rod (35) is slidably connected inside the first chamber (34), and the first piston rod (35) is provided in the direction of the main piston rod (33); A second chamber (36) is provided above the other side of the movable chamber (32), and a second piston rod (37) is slidably connected inside the second chamber (36). The second piston rod (37) is provided in the direction of the main piston rod (33).

2. The pneumatic switching mechanism according to claim 1, characterized in that: A first air port (341) and a second air port (342) are provided on both sides of the lower end of the first chamber (34), and the first piston rod (35) is located between the first air port (341) and the second air port (342).

3. The pneumatic switching mechanism according to claim 2, characterized in that: A third air port (361) and a fourth air port (362) are provided on both sides of the lower end of the second chamber (36), and the second piston rod (37) is located between the third air port (361) and the fourth air port (362).

4. The pneumatic switching mechanism according to claim 3, characterized in that: A first gas delivery pipeline (38) is provided below the first chamber (34), and the first gas delivery pipeline (38) has three groups of gas outlet ends, which are respectively connected to the first gas port (341), the third gas port (361) and the bottom of the active chamber (32).

5. The pneumatic switching mechanism according to claim 4, characterized in that: A second gas delivery pipeline (39) is provided below the second chamber (36), and the second gas delivery pipeline (39) has three groups of gas outlet ends, which are respectively connected to the fourth gas port (362), the second gas port (342) and the top of the active chamber (32).

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