Automobile outer covering part side wall closed angle molded surface compact positioning mechanism

Abstract

The invention discloses an automobile outer covering part side wall closed angle molded surface compact positioning mechanism, and relates to the technical field of positioning mechanisms, the automobile outer covering part side wall closed angle molded surface compact positioning mechanism comprises a male die, a material pressing device and a mounting seat, the material pressing device is arranged at one end of the male die, and the mounting seat is fixedly mounted on one side of the male die. According to the compact positioning mechanism for the side wall closed-angle molded surface of the automobile outer covering part, when the material pressing device moves towards one side of the male die, the positioning block can be extruded through the pre-pressing nitrogen cylinder, so that the positioning block can position the closed-angle molded surface of a product after rotating, and then the compact positioning effect on the closed-angle molded surface of the product can be achieved in cooperation with the material pressing device; due to the fact that the material pressing device makes contact with the male die, the rotating gear can be rotated through the positioning rod and the tooth block, meanwhile, the rotating gear can be buffered in cooperation with the buffering plate and the buffering spring which are arranged on one side, impact generated when the material pressing device is in butt joint with the male die can be relieved, and therefore the positioning mechanism can have the good protection effect when used.

Description

Technical Field

[0001] The invention relates to the technical field of positioning mechanisms, in particular to a compact positioning mechanism for a closed-angle profile of a side enclosure of an automobile outer covering. Background Art

[0002] When the side panel parts of automobile exterior covers have closed angles in the stamping direction, a retracting wedge or a rotating wedge is usually used. The wedge is retracted when taking and placing parts to avoid the closed angle surface. However, in some compact areas where the retracting wedge cannot be placed, it is necessary to consider the closed angle surface for air avoidance treatment.

[0003] For example, the flanged surface at the overlap of the taillights on the side of a certain car model has a closed angle, so the profile is treated to avoid air. When flanging the tailgate overlap, there is no boss molding to locate the parts to overcome the tendency of parts movement, and the positioning pin is near the C-pillar, far away from the flanging shaping area. The side panel has a 25-degree inclination in the stamping direction, so the presser cannot stably press the sheet metal on the inclined surface, and the sheet metal has a tendency to slide toward the tailgate under the influence of gravity. At the same time, when the retracting slider under the punch is in place, it hits the part's rollover area, causing the sheet metal to shift toward the tailgate, and the lateral force during the flanging shaping also causes the sheet metal to slide and deform toward the tailgate.

[0004] Due to various factors, the sheet metal is displaced greatly toward the tailgate overlap, and the product accuracy cannot be guaranteed. In addition, since the retracting slider at the tailgate overlap has penetrated under the punch, there is no space under the punch to place the retracting wedge at the taillight overlap. In the limited space, the profile cannot be positioned by conventional retracting wedges and rotating wedges. Therefore, without adjusting the stamping direction, there is currently no compact and feasible closed-angle profile positioning solution. The only option is to adjust the process and adjust the flanging work content at the tailgate overlap to other processes. However, changing the process content during the debugging phase will seriously affect the project cycle and greatly increase costs.

[0005] It can be seen from the above that the anti-slip deformation effect of the side panel parts of the automobile outer cover during the processing is poor.

[0006] Therefore, we propose a compact positioning mechanism for the closed-angle profile of the side enclosure of an automobile outer covering. Summary of the invention

[0007] The object of the present invention is to provide a compact positioning mechanism for the closed angle profile of the side panel of an automobile outer covering, so as to solve the problem of poor anti-slip deformation effect of the side panel parts of the automobile outer covering during processing proposed by the above background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a compact positioning mechanism for the closed-angle profile of the side enclosure of an automobile outer cover, comprising a punch, a presser and a mounting seat, a presser is arranged above the punch, a mounting seat is fixedly mounted on the outer side of the punch, a positioning block is arranged at one end of the punch close to the mounting seat, the positioning block is in the shape of an L-shaped rod, a pin shaft connected to the mounting seat passes through the interior of the positioning block, and a pre-compression spring connected to the positioning block is arranged inside the mounting seat.

[0009] Preferably, a reserved groove matching the pre-stressing spring is provided inside the mounting seat, a pre-stressing nitrogen cylinder is provided on one side of the press, the pre-stressing nitrogen cylinder and the press are connected by locking bolts, and the locking bolts are symmetrically distributed at one end of the pre-stressing nitrogen cylinder.

[0010] Preferably, the top end of the punch is provided with a part body extending to the outside of the positioning block.

[0011] Preferably, a hollow groove is provided on a side of the male mold away from the mounting seat, and a rotating rod rotatably connected to the male mold through a rotating shaft is provided inside the hollow groove.

[0012] Preferably, there are two rotating rods and they are symmetrically distributed inside the empty slot, the surfaces of the rotating rods are all provided with rotating gears, and the opposite sides of the two rotating gears are provided with plug-in positioning rods welded to the presser.

[0013] Preferably, tooth blocks are provided on both sides of the plug-in positioning rod, and the tooth blocks are evenly distributed on both sides of the plug-in positioning rod.

[0014] Preferably, a buffer plate is provided on one side of the two rotating gears away from the plug-in positioning rod and is rotatably connected to the empty slot via a rotating shaft. The end of the buffer plate close to the rotating gear is an arc surface, and a buffer spring is connected between the bottom end of the buffer plate and the empty slot.

[0015] Preferably, symmetrically distributed rubber buffer pads are provided on opposite sides of the punch and the press.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the compact positioning mechanism of the closed-angle profile of the side enclosure of the automobile outer cover enables the pre-pressing nitrogen cylinder to squeeze the positioning block when the presser moves to one side of the punch, so that the positioning block can rotate to position the closed-angle profile of the product, and then cooperate with the presser to achieve a relatively compact positioning effect on the closed-angle profile of the product. Since the presser contacts the punch, the rotating gear can be rotated through the positioning rod and the gear block, and at the same time, the buffer plate and buffer spring arranged on one side can be used to buffer the rotating gear, thereby reducing the impact generated when the presser and the punch are docked, so that the positioning mechanism can have a better protective effect when in use.

[0017] 1. The compact positioning mechanism for the closed angle profile of the side enclosure of the automobile outer cover, when the presser moves to one side of the punch, the installed pre-pressing nitrogen cylinder can contact the positioning block in advance. Since the pressure of the pre-pressing nitrogen cylinder is greater than the elastic force of the pre-pressing spring, the positioning block will rotate around the pin under the action of the pre-pressing nitrogen cylinder, so that the positioning block can rotate to the working state and can position the closed angle profile of the product. Then, the presser can be in full contact with the punch after moving, so that the presser cooperates with the positioning block rotated to the working state to position the closed angle profile of the product more compactly. The positioning effect is achieved. At the same time, the positioning block transmits the lateral force generated by the shaping to the mounting seat through the pin shaft. Since the mounting seat is close to the side wall of the punch, the lateral force can be transmitted to the punch. After the shaping is completed, the press is moved up until the pre-stressing nitrogen cylinder is separated from the positioning block, so that the pre-stressing spring set at the bottom of the positioning block can lose its restriction, and then the pre-stressing spring can be reset, so that the connected positioning block can be pushed, so that the positioning block can be reset around the pin shaft and return to the retracted state, so that the closed angle surface of the product is open, and a stamping process is completed;

[0018] 2. The compact positioning mechanism of the closed angle profile of the side of the automobile outer cover can move the plug-in positioning rod when the presser moves, so that the plug-in positioning rod set at the bottom end can be inserted into the empty slot, and at the same time, the plug-in positioning rod can rotate the rotating gear set inside the empty slot through the tooth block when moving, so that the rotating gear can rotate on the surface of the rotating rod, and the rotating gear can push the buffer plate connected on one side when moving, so that the buffer plate can rotate inside the empty slot, and at the same time, the buffer plate can stretch the connected buffer spring when rotating, and as the rotating gear continues to rotate, the buffer plate can contact with another rack in the rotating gear and block the rotating gear, so that the rotation speed of the rotating gear can be blocked, thereby reducing the impact generated when the presser and the punch are docked, and the rubber buffer pad set on one side of the presser and the punch can avoid damage caused by impact, so that the positioning mechanism can have a better protective effect when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the closed-angle profile compact rotary positioning mechanism of the present invention in the working bottom dead point state;

[0020] Figure 2 It is a schematic diagram of the closed-angle profile compact rotation positioning mechanism of the present invention before pressing the material;

[0021] Figure 3 This is a schematic diagram of the main cutaway structure of the hollow slot of the present invention;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the hollow slot of the present invention viewed from above;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the mounting seat of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the plug-in positioning rod of the present invention.

[0025] In the figure: 1. punch; 2. presser; 3. mounting seat; 4. positioning block; 5. pin; 6. pre-compression spring; 7. reserved groove; 8. pre-compression nitrogen cylinder; 9. part body; 10. empty groove; 11. rotating rod; 12. rotating gear; 13. plug-in positioning rod; 14. gear block; 15. buffer plate; 16. buffer spring; 17. rubber buffer pad. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1 , Figure 2 and Figure 5 The present invention provides a technical solution: a compact positioning mechanism for the closed angle profile of the side of an automobile outer cover, comprising a punch 1, a presser 2 and a mounting seat 3, wherein the presser 2 is arranged above the punch 1, and the mounting seat 3 is fixedly installed on the outside of the punch 1, and a positioning block 4 is arranged at one end of the punch 1 close to the mounting seat 3, and the positioning block 4 is in the shape of an L-shaped rod, and a pin 5 connected to the mounting seat 3 is penetrated inside the positioning block 4, and a pre-stress spring 6 connected to the positioning block 4 is arranged inside the mounting seat 3. A reserved groove 7 matching the pre-stress spring 6 is provided inside the mounting seat 3, and a pre-stress nitrogen cylinder 8 is provided on one side of the presser 2, and the pre-stress nitrogen cylinder 8 is connected to the presser 2 by a locking bolt, and the locking bolts are symmetrically distributed at one end of the pre-stress nitrogen cylinder 8, and a part body 9 extending to the outside of the positioning block 4 is arranged at the top of the punch 1.

[0028] When implementing it specifically,

[0029] See also Figure 1 , Figure 2 and Figure 5It can be seen that when the side parts of the automobile outer cover are being stamped, it is usually not easy to position the profile, so that the lateral force during the flanging shaping work causes the sheet to slide and deform toward the tailgate, and the product accuracy cannot be guaranteed. The pre-stressing nitrogen cylinder 8 can be installed on one side of the press 2 through a locking bolt, so that when the press 2 moves to one side of the punch 1, the installed pre-stressing nitrogen cylinder 8 can contact the positioning block 4 in advance. Since the pressure of the pre-stressing nitrogen cylinder 8 is greater than the elastic force of the pre-stressing spring 6, the positioning block 4 will rotate around the pin 5 under the action of the pre-stressing nitrogen cylinder 8, so that the positioning block 4 can rotate to the working state and can position the closed angle profile of the product. Subsequently, the press 2 can be in full contact with the punch 1 after moving, so that the press 2 cooperates with the positioning block 4 rotated to the working state to achieve a more compact positioning effect on the closed angle profile of the product. At the same time, the positioning block 4 transmits the lateral force generated by the shaping to the mounting seat 3 through the pin 5. Since the mounting seat 3 is close to the side wall of the punch 1, the lateral force can be transmitted to the punch 1. After the shaping is completed, the presser 2 is moved upward until the pre-stressing nitrogen cylinder 8 is separated from the positioning block 4, so that the pre-stressing spring 6 set at the bottom end of the positioning block 4 can lose its restriction, and then the pre-stressing spring 6 can be reset, so that the connected positioning block 4 can be pushed, so that the positioning block 4 can be reset around the pin 5 and return to the retracted state, so that the closed-angle surface of the product is open, completing a stamping process.

[0030] The side of the male mold 1 away from the mounting seat 3 is provided with an empty slot 10, and a rotating rod 11 rotatably connected by a rotating shaft is arranged inside the empty slot 10. There are two rotating rods 11 and they are symmetrically distributed inside the empty slot 10. The surface of the rotating rods 11 is provided with a rotating gear 12. The opposite sides of the two rotating gears 12 are provided with a plug-in positioning rod 13 welded to the press 2. Both sides of the plug-in positioning rod 13 are provided with tooth blocks 14, and the tooth blocks 14 are evenly distributed on both sides of the plug-in positioning rod 13. The side of the two rotating gears 12 away from the plug-in positioning rod 13 is provided with a buffer plate 15 rotatably connected to the empty slot 10 by a rotating shaft. The end of the buffer plate 15 close to the rotating gear 12 is an arc surface, and a buffer spring 16 is connected between the bottom end of the buffer plate 15 and the empty slot 10. The opposite sides of the male mold 1 and the press 2 are provided with symmetrically distributed rubber buffer pads 17.

[0031] When implementing it specifically,

[0032] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6It can be seen that when the side parts of the automobile outer cover are being stamped, since the punch 2 has to contact the punch 1, and the stroke during the movement is large, the punch 2 is prone to collision when contacting the punch 1. At the same time, the buffering effect of the punch 2 and the punch 1 is poor when they are in contact, which can easily lead to damage to the punch 2 and the punch 1. The plug-in positioning rod 13 can be moved when the punch 2 moves, so that the plug-in positioning rod 13 set at the bottom end can be plugged into the empty slot 10. At the same time, the plug-in positioning rod 13 can rotate the rotating gear 12 set inside the empty slot 10 through the tooth block 14 when moving, so that The rotating gear 12 can rotate on the surface of the rotating rod 11, and the rotating gear 12 can push the buffer plate 15 connected on one side when moving, so that the buffer plate 15 can rotate inside the empty slot 10, and the buffer plate 15 can stretch the connected buffer spring 16 when rotating. As the rotating gear 12 continues to rotate, the buffer plate 15 can contact with another rack in the rotating gear 12, and can block the rotating gear 12, so that the rotation speed of the rotating gear 12 can be blocked, thereby slowing down the impact generated when the presser 2 and the punch 1 are docked. At the same time, the rubber buffer pad 17 set on the opposite side of the presser 2 and the punch 1 can avoid damage caused by the impact, so that the positioning mechanism can have a better protective effect when in use.

[0033] To sum up, when the side parts of the automobile outer cover have a closed angle in the stamping direction, the pre-stressing nitrogen cylinder 8 can be installed to contact the positioning block 4 in advance. Since the pressure of the pre-stressing nitrogen cylinder 8 is greater than the elastic force of the pre-stressing spring 6, the positioning block 4 will rotate around the pin 5 under the action of the pre-stressing nitrogen cylinder 8, so that the positioning block 4 can rotate to the working state and can position the closed-angle surface of the product. Subsequently, the presser 2 can be completely in contact with the punch 1 after moving, so that the presser 2 cooperates with the positioning block 4 rotated to the working state to achieve a more compact positioning effect on the closed-angle surface of the product. At the same time, the positioning block 4 transmits the lateral force generated by the shaping to the mounting seat 3 through the pin 5. Since the mounting seat 3 is close to the side wall of the punch 1, the lateral force can be transmitted to the punch 1. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A compact positioning mechanism for the closed angle profile of the side enclosure of an automobile outer cover, comprising a punch (1), a presser (2) and a mounting seat (3), characterized in that: A material press (2) is arranged above the punch (1), a mounting seat (3) is fixedly installed on the outer side of the punch (1), a positioning block (4) is arranged at one end of the punch (1) close to the mounting seat (3), the positioning block (4) is in the shape of an L-shaped rod, a pin shaft (5) connected to the mounting seat (3) passes through the interior of the positioning block (4), and a pre-stressed spring (6) connected to the positioning block (4) is arranged inside the mounting seat (3).

2. A compact positioning mechanism for closed angle profile of side enclosure of automobile outer cover according to claim 1, characterized in that: A reserved groove (7) matching the pre-stressing spring (6) is provided inside the mounting seat (3); a pre-stressing nitrogen cylinder (8) is provided on one side of the press (2); the pre-stressing nitrogen cylinder (8) and the press (2) are connected via locking bolts, and the locking bolts are symmetrically distributed at one end of the pre-stressing nitrogen cylinder (8).

3. A compact positioning mechanism for closed angle profile of side enclosure of automobile outer cover according to claim 1, characterized in that: The top end of the male mold (1) is provided with a part body (9) extending to the outside of the positioning block (4).

4. A compact positioning mechanism for closed angle profile of side enclosure of automobile outer cover according to claim 3, characterized in that: A hollow groove (10) is provided on a side of the male mold (1) away from the mounting seat (3), and a rotating rod (11) rotatably connected via a rotating shaft is provided inside the hollow groove (10).

5. A compact positioning mechanism for closed angle profile of side enclosure of automobile outer cover according to claim 4, characterized in that: The rotating rods (11) are provided with two and are symmetrically distributed inside the empty slot (10). The surfaces of the rotating rods (11) are both provided with rotating gears (12). The opposite sides of the two rotating gears (12) are provided with plug-in positioning rods (13) welded to the presser (2).

6. A compact positioning mechanism for closed angle profile of side enclosure of automobile outer cover according to claim 5, characterized in that: Tooth blocks (14) are provided on both sides of the plug-in positioning rod (13), and the tooth blocks (14) are evenly distributed on both sides of the plug-in positioning rod (13).

7. A compact positioning mechanism for closed angle profile of side enclosure of automobile outer cover according to claim 5, characterized in that: A buffer plate (15) is provided on one side of the two rotating gears (12) away from the plug-in positioning rod (13) and is rotatably connected to the empty slot (10) via a rotating shaft. The end of the buffer plate (15) close to the rotating gear (12) is an arc surface, and a buffer spring (16) is connected between the bottom end of the buffer plate (15) and the empty slot (10).

8. The compact positioning mechanism for the closed angle profile of the side enclosure of an automobile outer cover according to claim 1, characterized in that: The opposite sides of the male mold (1) and the press (2) are both provided with symmetrically distributed rubber buffer pads (17).

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