Limiting device of large switching mechanism

Abstract

The invention provides a limiting device of a large switching mechanism, which comprises a limiting device and a switching mechanism, and is characterized in that the limiting device is arranged below the switching mechanism; the limiting device comprises a limiting working plate, a first pushing air cylinder, a first limiting clamping plate and a second limiting clamping plate; the limiting working plate is arranged below the switching mechanism, the first limiting clamping plate and the second limiting clamping plate are installed on the two sides of the limiting working plate respectively, and the first pushing air cylinder pushes the limiting working plate to move up and down; the switching mechanism comprises a second pushing air cylinder and a switching plate, and the second pushing air cylinder pushes the plate to move left and right. According to the invention, the stability and the precision of the large-scale tapered wedge mechanism are improved, the grinding quantity of an assembly department is reduced, the complicated problem is solved into a simple structure, the working efficiency is improved, and the development cost is reduced.

Description

Technical Field

[0001] The invention belongs to the field of automobile mold production, and in particular relates to a limiting device of a large switching mechanism. Background Art

[0002] With the rapid development of the automobile industry, competition is increasingly fierce. In order to meet the needs of different groups of people, a car is often developed with several different configurations. In order to reduce the stamping die process and reduce the mold development cost, large-scale exterior cover molds often use switching structures in the stamping production process to meet the production of parts for different models. The stability and accuracy of the switching structure directly affect the mold production and the quality of the parts.

[0003] The existing technical solution is that in a large switching structure, a nitrogen cylinder reverse top switching mechanism installed on the press core is usually used to achieve two states of blanking or non-blanking. Since the nitrogen cylinder is a flexible device, in the blanking state, due to the friction between the male and female die edges, the switching mechanism will lag when it moves upward after the mold is opened, resulting in poor stability when the switching mechanism works, collision noise during the blanking process, affecting the mold accuracy, and it is difficult to ensure the quality of the product. Invention content

[0004] In view of this, the invention aims to propose a limiting device for a large switching mechanism to solve at least one technical problem in the background technology.

[0005] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0006] The limiting device of a large switching mechanism comprises a limiting device and a switching mechanism, wherein the limiting device is arranged below the switching mechanism; the limiting device comprises a limiting working plate, a first pushing cylinder, a first limiting card plate, and a second limiting card plate; the limiting working plate is arranged below the switching mechanism, the first limiting card plate and the second limiting card plate are respectively installed on both sides of the limiting working plate, and the first pushing cylinder pushes the limiting working plate to move up and down; the switching mechanism comprises a second pushing cylinder and a switching plate, the second pushing cylinder pushes the plate to move left and right, and a switching guide plate corresponding to the first limiting card plate or the second limiting card plate is provided on the upper part of the switching plate; when the switching mechanism is in a working state, the first limiting card plate or the second limiting card plate is clamped with the switching plate, and when the switching mechanism is in a non-working state, the first limiting card plate or the second limiting card plate is clamped with the switching guide plate.

[0007] A first guide hole and a second guide hole are arranged around the switching plate; a first telescopic rod corresponding to the first guide hole and a second telescopic rod corresponding to the second guide hole are arranged on the limiting working plate; the other ends of the first telescopic rod and the second telescopic rod are installed at the bottom of the upper mold; the first telescopic rod can move left and right along the first guide hole, and the second telescopic rod can move left and right along the second guide hole.

[0008] The mounting end of the first push cylinder is mounted on the lower mold, the output end of the first push cylinder is connected to one end of the first telescopic rod, and the other end of the first telescopic rod is mounted on the bottom of the upper mold.

[0009] The first limit card plate or the second limit card plate is a U-shaped structure. One side of the first limit card plate or the second limit card plate is installed in the card slot of the limit working plate. The other side of the first limit card plate or the second limit card plate is provided with a first trapezoidal block and is clamped with the switching plate or the switching guide plate.

[0010] A first mounting hole is provided on the switching plate, the second pushing cylinder is arranged in the first mounting hole, and the mounting end of the second pushing cylinder is installed on the upper mold; the output end of the second pushing cylinder is connected to the switching plate.

[0011] A plurality of evenly distributed L-shaped baffles are arranged on the limiting working plate, the bottom of the horizontal end of the L-shaped baffle is arranged on the limiting working plate, a second trapezoidal block is arranged on the upper part of the horizontal end of the L-shaped baffle, one side of the second trapezoidal block is connected to the vertical end of the L-shaped baffle; the other side of the second trapezoidal block is provided with a chamfer.

[0012] A third trapezoidal block and a mounting block are provided at the bottom of the switching plate, and the mounting block is arranged on one side of the third trapezoidal block; the upper part of the third trapezoidal block is connected to the bottom of the switching plate, and the lower part of the third trapezoidal block corresponds to the upper part of the second trapezoidal block; one side of the third trapezoidal block corresponds to the mounting block, and the other side of the third trapezoidal block is provided with a chamfer.

[0013] The number of the second trapezoidal blocks is the same as the number of the third trapezoidal blocks;

[0014] When not in operation, the third trapezoidal block and the mounting block move between the L-shaped baffles;

[0015] The distance between the L-shaped baffles is greater than the lateral length of the mounting block and the third lifting block.

[0016] The above-mentioned limiting device of the large switching mechanism is used in automobile manufacturing.

[0017] Furthermore, it is applied to the preparation of roof sunroofs, side panels, and rear doors.

[0018] Compared with the prior art, the limiting device of the large switching mechanism created by the present invention has the following advantages:

[0019] This application solves the instantaneous jamming phenomenon and collision noise of the switching mechanism after the mold is opened in the punching state, and the ineffective movement of the switching mechanism during the punching process in the non-punching state. It improves the stability and accuracy of the large-scale wedge mechanism, reduces the amount of research and development in the assembly department, splits complex problems into simple structures, improves work efficiency, and reduces development costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 A schematic diagram of a limiting device of a large switching mechanism according to an embodiment of the present invention;

[0022] Figure 2 A side view of a limit device of a large switching mechanism according to an embodiment of the present invention;

[0023] Figure 3 It is an overall schematic diagram of the limiting device of the large switching mechanism described in the embodiment of the present invention;

[0024] Figure 4 A schematic diagram of a first limit clamping plate in a working state of a limit device of a large switching mechanism according to an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of a first limit clamping plate in a non-working state of a limit device of a large-scale switching mechanism according to an embodiment of the present invention;

[0026] Figure 6 The roof product described in Example 1 of the present invention is created (the upper one is without skylight board, and the lower one is the skylight version);

[0027] Figure 7 It is a schematic diagram of a traditional switching structure;

[0028] Figure 8 It is a main schematic diagram of a traditional switching mechanism;

[0029] Fig. 9 Schematic diagram of the working principle of a traditional switching mechanism.

[0030] Description of reference numerals:

[0031] 1. Limit working plate; 2. First push cylinder; 3. First limit card plate; 4. Second limit card plate; 5. Second push cylinder; 6. Switch plate; 7. First guide hole; 8. Second guide hole; 9. First telescopic rod; 10. Second telescopic rod; 11. Lower mold; 12. Upper mold; 13. First trapezoidal block; 14. L-shaped baffle; 15. Second trapezoidal block; 16. Third trapezoidal block; 17. Mounting block; 18. Switch guide plate; 19. Push rod; 20. First blade; 21. Second blade. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0034] Example 1

[0035] like Figure 1-6 As shown, in the application of the top cover product, the limiting device of the large switching mechanism includes a limiting device and a switching mechanism, and the limiting device is arranged below the switching mechanism; the limiting device includes a limiting working plate 1, a first pushing cylinder 2, a first limiting card plate 3, and a second limiting card plate 4; the limiting working plate 1 is arranged below the switching mechanism, and the first limiting card plate 3 and the second limiting card plate 4 are respectively installed on both sides of the limiting working plate 1, and the first pushing cylinder 2 pushes the limiting working plate 1 to move up and down; the switching mechanism includes a second pushing cylinder 5 and a switching plate 6, and the second pushing cylinder 5 pushes the plate to move left and right, and a switching guide plate 18 corresponding to the first limiting card plate 3 or the second limiting card plate 4 is provided on the upper part of the switching plate 6; when the switching mechanism is in the working state, the first limiting card plate 3 or the second limiting card plate 4 is clamped with the switching plate 6, and when the switching mechanism is in the non-working state, the first limiting card plate 3 or the second limiting card plate 4 is clamped with the switching guide plate 18.

[0036] The number of the first limit clamping plates 3 is 2, and the number of the second limit clamping plates 4 is 2.

[0037] A first guide hole 7 and a second guide hole 8 are provided around the switching plate 6; a first telescopic rod 9 corresponding to the first guide hole 7 and a second telescopic rod 10 corresponding to the second guide hole 8 are provided on the limiting working plate 1; the other ends of the first telescopic rod 9 and the second telescopic rod 10 are installed at the bottom of the upper mold 12; the first telescopic rod 9 can move left and right along the first guide hole 7, and the second telescopic rod 10 can move left and right along the second guide hole 8.

[0038] The mounting end of the first push cylinder 2 is mounted on the lower mold 11, and the output end of the first push cylinder 2 is connected to one end of the first telescopic rod 9, and the other end of the first telescopic rod 9 is mounted on the bottom of the upper mold 12. The first limit card plate 3 or the second limit card plate 4 is a U-shaped structure, one side of the first limit card plate 3 or the second limit card plate 4 is mounted in the card slot of the limit working plate 1, and the other side of the first limit card plate 3 or the second limit card plate 4 is provided with a first trapezoidal block 13, and is clamped with the switching plate 6 or the switching guide plate 18.

[0039] The switch plate 6 is provided with a first mounting hole, the second push cylinder 5 is arranged in the first mounting hole, and the mounting end of the second push cylinder 5 is installed on the upper mold 12; the output end of the second push cylinder 5 is connected to the switch plate 6. The limit working plate 1 is provided with a plurality of evenly distributed L-shaped baffles 14, the bottom of the horizontal end of the L-shaped baffle 14 is arranged on the limit working plate 1, and the upper part of the horizontal end of the L-shaped baffle 14 is provided with a second trapezoidal block 15, one side of the second trapezoidal block 15 is connected to the vertical end of the L-shaped baffle 14; the other side of the second trapezoidal block 15 is provided with a chamfer.

[0040] The bottom of the switching plate 6 is provided with a third trapezoidal block 16 and a mounting block 17, and the mounting block 17 is arranged on one side of the third trapezoidal block 16; the upper part of the third trapezoidal block 16 is connected to the bottom of the switching plate 6, and the lower part of the third trapezoidal block 16 corresponds to the upper part of the second trapezoidal block 15; one side of the third trapezoidal block 16 corresponds to the mounting block 17, and the other side of the third trapezoidal block 16 is provided with a chamfer. The number of the second trapezoidal blocks 15 and the third trapezoidal blocks 16 is the same;

[0041] In the non-working state, the third trapezoidal block 16 and the mounting block 17 move to between the L-shaped baffles 14; the distance between the L-shaped baffles 14 is greater than the lateral length of the mounting block 17 and the third lifting block.

[0042] A push rod 19 is provided on one side of the switching plate 6 , and a first blade 20 is provided at the bottom of the push rod 19 ; a second blade 21 is provided at the bottom of the limiting working plate 1 .

[0043] In order to ensure the stability and accuracy of the switching mechanism, we use two groups of 4 limit plates and cancel the nitrogen cylinder on the pressing core, that is, the flexible support becomes a rigid limit. The switching mechanism body is in rigid contact in both the blanking state and the non-blanking state. This ensures that the entire mechanism is synchronously disengaged when working and solves the collision noise. It also ensures that the main body of the mechanism does not produce invalid movement when not working, reduces the difficulty of assembly department research and development, has a simple structure, and improves the work efficiency of the assembly department. In addition, compared with the original structure, the entire mechanism is on the upper die, which is convenient for daily maintenance, the mechanism is stable, and there is no collision during work, which extends the service life of the mechanism.

[0044] like Figure 7-9 As shown, in the prior art, the large-scale switching of the skylight of the top cover OP20 in the above figure, the punching state: the nitrogen cylinder installed on the pressing core is used to lift the main body of the switching mechanism to achieve the separation of the cutting edge after punching, and the friction force of the matching section of the male and female die cutting edges of the punching skylight generates a reaction force on the nitrogen cylinder, resulting in instantaneous jamming of the switching mechanism after mold opening; non-punching state: each punching process The switching mechanism will produce an invalid movement at the switching height.

[0045] The present invention can solve the instantaneous jamming and collision noise of the switching mechanism after the mold is opened in the punching state, and the ineffective movement of the switching mechanism during the punching process in the non-punching state. The structure is simple and stable, easy to install, and the work efficiency of the assembly department is improved.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The limit device of the large switching mechanism is characterized by: It includes a limit device and a switching mechanism, wherein the limit device is arranged below the switching mechanism; The limiting device includes a limiting working plate, a first pushing cylinder, a first limiting card plate, and a second limiting card plate; the limiting working plate is arranged below the switching mechanism, the first limiting card plate and the second limiting card plate are respectively installed on both sides of the limiting working plate, and the first pushing cylinder pushes the limiting working plate to move up and down; The switching mechanism includes a second push cylinder and a switching plate. The second push cylinder pushes the plate to move left and right. A switching guide plate corresponding to the first limit card plate or the second limit card plate is provided on the upper part of the switching plate. When the switching mechanism is in working state, the first limit card plate or the second limit card plate is connected with the switching plate; when the switching mechanism is in non-working state, the first limit card plate or the second limit card plate is connected with the switching guide plate.

2. The limiting device of the large switching mechanism according to claim 1 is characterized in that: The switching plate is provided with a first guide hole and a second guide hole around its periphery; The limiting working plate is provided with a first telescopic rod corresponding to the first guide hole and a second telescopic rod corresponding to the second guide hole; The other ends of the first telescopic rod and the second telescopic rod are installed at the bottom of the upper mold; the first telescopic rod can move left and right along the first guide hole, and the second telescopic rod can move left and right along the second guide hole.

3. The limiting device of the large switching mechanism according to claim 2 is characterized in that: The mounting end of the first push cylinder is mounted on the lower mold, the output end of the first push cylinder is connected to one end of the first telescopic rod, and the other end of the first telescopic rod is mounted on the bottom of the upper mold.

4. The limiting device of the large switching mechanism according to claim 1 is characterized in that: The first limit card plate or the second limit card plate is a U-shaped structure. One side of the first limit card plate or the second limit card plate is installed in the card slot of the limit working plate. The other side of the first limit card plate or the second limit card plate is provided with a first trapezoidal block and is clamped with the switching plate or the switching guide plate.

5. The limiting device of the large switching mechanism according to claim 1, characterized in that: A first mounting hole is provided on the switching plate, the second pushing cylinder is arranged in the first mounting hole, and the mounting end of the second pushing cylinder is installed on the upper mold; the output end of the second pushing cylinder is connected to the switching plate.

6. The limiting device of the large switching mechanism according to claim 1, characterized in that: A plurality of evenly distributed L-shaped baffles are arranged on the limiting working plate, the bottom of the horizontal end of the L-shaped baffle is arranged on the limiting working plate, a second trapezoidal block is arranged on the upper part of the horizontal end of the L-shaped baffle, one side of the second trapezoidal block is connected to the vertical end of the L-shaped baffle; the other side of the second trapezoidal block is provided with a chamfer.

7. The limiting device of the large switching mechanism according to claim 1, characterized in that: A third trapezoidal block and a mounting block are provided at the bottom of the switching plate, and the mounting block is arranged on one side of the third trapezoidal block; The upper part of the third trapezoidal block is connected to the bottom of the switching plate, and the lower part of the third trapezoidal block corresponds to the upper part of the second trapezoidal block; One side of the third trapezoidal block corresponds to the mounting block, and the other side of the third trapezoidal block is provided with a chamfer.

8. The limiting device of the large switching mechanism according to claim 1, characterized in that: The number of the second trapezoidal blocks is the same as the number of the third trapezoidal blocks; When not in operation, the third trapezoidal block and the mounting block move between the L-shaped baffles; The distance between the L-shaped baffles is greater than the lateral length of the mounting block and the third lifting block.

9. The limiting device of the large switching mechanism described in claims 1 to 8 is used in automobile manufacturing.

10. The use according to claim 9, characterized in that: Used in the preparation of roof sunroofs, side panels, and rear doors.

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