CN210450646U - Closing mechanism for automobile exhaust pipe - Google Patents

Abstract

The utility model relates to a closing mechanism for automobile exhaust pipe, it is including the plug that is used for the suit blast pipe, the plug is keeping away from the one end fixed mounting that the blast pipe closed up is in the plug extension board, but the plug extension board is located in the through-hole of die holder with relative movement, die holder fixed mounting is on the bottom plate, the left and right bilateral symmetry of plug is equipped with first processing mechanism, the top is equipped with second processing mechanism, the below is equipped with third processing mechanism, first processing mechanism, second processing mechanism, third processing mechanism all connect the upper die base at the top. The utility model discloses a binding off mechanism for automobile exhaust pipe, just carry out extrusion process shaping with just to the mouth of pipe of blast pipe and compare, it is littleer to have that the atress is even more, warp during the extrusion, does benefit to and reduces inhomogeneous deformation, can make the orificial shape of automobile exhaust pipe who processes out more stable, does benefit to and reduces and produces bad product.

Description

Closing mechanism for automobile exhaust pipe

Technical Field

The utility model relates to an automobile exhaust pipe processing technology field especially relates to a binding off mechanism for automobile exhaust pipe.

Background

The mouth of pipe of automobile exhaust pipe, because the shape is comparatively complicated, when closing up, usually according to the orificial shape of automobile exhaust pipe make one rather than relative model drift, the model drift carries out extrusion process shaping just to the mouth of pipe of blast pipe when the shaping, this kind of forming mode is because the atress is inhomogeneous when the extrusion, warp when leading to the extrusion easily, also produces easily and warp inhomogeneous, leads to the orificial shape of the automobile exhaust pipe who processes out unstable, produces defective products easily.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art, the utility model provides a binding off mechanism for automobile exhaust pipe.

The utility model provides a technical scheme that its technical problem adopted is:

the necking mechanism for the automobile exhaust pipe comprises a core rod for sleeving the exhaust pipe, wherein one end, far away from the necking of the exhaust pipe, of the core rod is fixedly installed on a core rod supporting plate, the core rod supporting plate is arranged in a through hole of a lower die base in a relatively movable mode, the lower die base is fixedly installed on a bottom plate, a first machining mechanism is symmetrically arranged on the left side and the right side of the core rod, a second machining mechanism is arranged above the first machining mechanism, a third machining mechanism is arranged below the first machining mechanism, the second machining mechanism and the third machining mechanism, and the first machining mechanism, the second machining mechanism and the third machining mechanism are.

In a preferred embodiment of the necking-in mechanism for the automobile exhaust pipe provided by the present invention, the first processing mechanism comprises a slotting tool, a baffle, a spring rod, a first return spring, a protection cover, a spring pad, a slider and a first punch, the slider is placed on the top surface of the lower die holder, the slider is fixedly connected with the first punch at the inner side and is abutted against the slotting tool through an inclined plane at the top in a relatively sliding manner, the top end of the slotting tool is fixedly installed in the upper die holder, the baffle is arranged at the outer side of the slider and is fixedly installed on the lower die holder, one end of the spring rod is connected with the slider through a screw thread and the other end of the spring rod penetrates through the through hole of the baffle and extends into the protection cover, the protection cover is fixedly installed on the baffle, the first return spring is sleeved on the spring rod, one end of the first return spring is abutted against the baffle and the other, the spring cushion is sleeved on the spring rod.

In a preferred embodiment of the closing mechanism for the exhaust pipe of the vehicle, the second processing mechanism includes a clamping plate and a second punch, the top end of the clamping plate is fixedly connected to the upper die base, and the top end of the second punch is fixedly installed in the clamping plate.

The utility model provides a closing mechanism for automobile exhaust pipe in a preferred embodiment, third processing agency includes depression bar, kicking block, semi-circular slider, third drift, pivot and third reset spring, the top fixed connection of depression bar upper die base, bottom fixed connection kicking block, semi-circular slider locates with sliding relatively in the semi-circular spout of bottom plate, semi-circular slider's one end is just to being located the bottom surface butt of kicking block, the other end and third drift, the third drift is located install through the pivot in the first recess of die holder, the bottom surface, the other end of third reset spring are connected on the bottom plate in the one end of third drift are connected.

In a preferred embodiment of the closing mechanism for the automobile exhaust pipe, the bottom plate is further provided with a second groove opposite to the core rod support plate, a second return spring is arranged in the second groove, and the top end of the second return spring is fixedly connected with the core rod support plate, the bottom end of the second groove and the bottom of the second groove.

Compared with the prior art, the utility model provides a closing mechanism for automobile exhaust pipe's beneficial effect: the utility model discloses when automobile exhaust pipe need close up all around, put the blast pipe on the plug, start the press, the last workstation of press moves down and promotes the upper die base and move down, under the effect of pressure, slotting tool, splint, second drift, depression bar, kicking block move down, and slotting tool promotes slider, slider and promotes first drift inward movement, and the kicking block pushes down the other end perk that makes semi-circular slider and promotes third drift upward movement. Foretell removal makes two first drifts, second drift and third drift inwards move simultaneously, make blast pipe machine-shaping on the plug, this kind of shaping mode is around the side of blast pipe to its stamping forming, the ascending atress in all directions can offset each other, just carry out extrusion process shaping to the mouth of pipe of blast pipe and compare, it is more even to have the atress, it is littleer to warp during the extrusion, do benefit to and reduce inhomogeneous deformation, can make the orificial shape of the car blast pipe of processing out more stable, do benefit to and reduce and produce bad product.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic structural view of a closing mechanism for an automobile exhaust pipe according to the present invention;

fig. 2 is a sectional view taken along line a-a of the structure of the closing mechanism for an automobile exhaust pipe according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 and 2, the necking mechanism for the automobile exhaust pipe includes a mandrel 5 for sleeving an exhaust pipe 6, the mandrel 5 is fixedly mounted on a mandrel support plate 10 at an end far away from the necking end of the exhaust pipe 6, the mandrel support plate 10 is relatively movably disposed in a through hole of a lower die holder 3, the lower die holder 3 is fixedly mounted on a bottom plate 4, first processing mechanisms 2 are symmetrically disposed on left and right sides of the mandrel 5, a second processing mechanism 7 is disposed above the mandrel 5, a third processing mechanism 8 is disposed below the mandrel 5, and the first processing mechanism 2, the second processing mechanism 7 and the third processing mechanism 8 are connected to an upper die holder 1 at tops thereof.

The first processing mechanism 2 comprises a slotting tool 21, a baffle 22, a spring rod 23, a first return spring 24, a protective cover 25, a spring pad 26, a sliding block 27 and a first punch 28, the sliding block 27 is placed on the top surface of the lower die holder 3, the sliding block 27 is fixedly connected with the first punch 28 at the inner side and is abutted to the slotting tool 21 through a slope in a relatively sliding manner at the top, the top end of the slotting tool 21 is fixedly arranged in the upper die holder 1, the baffle 22 is arranged at the outer side of the sliding block 27 and is fixedly arranged on the lower die holder 3, one end of the spring rod 23 is connected with the sliding block 27 through threads, the other end of the spring rod penetrates through a through hole of the baffle 22 and then extends into the protective cover 25, the protective cover 25 is fixedly arranged on the baffle 22, the first return spring 24 is sleeved on the spring rod 23, one end of the first return spring 24 is abutted to the baffle, The other end is abutted against a spring pad 26, and the spring pad 26 is sleeved on the spring rod 23.

The second processing mechanism 7 comprises a clamping plate 71 and a second punch 72, the top end of the clamping plate 71 is fixedly connected with the upper die holder 1, and the top end of the second punch 72 is fixedly installed in the clamping plate 71.

The third processing mechanism 8 comprises a pressing rod 81, a top block 82, a semicircular sliding block 83, a third punch 84, a rotating shaft 85 and a third return spring 86, the top end of the pressing rod 81 is fixedly connected with the upper die base 1 and the bottom of the pressing rod is fixedly connected with the top block 82, the semicircular sliding block 83 is arranged in a semicircular sliding groove of the bottom plate 4 in a relatively sliding manner, one end of the semicircular sliding block 83 is opposite to the top block 82, the other end of the semicircular sliding block is abutted against the bottom surface of the third punch 84, the third punch 84 is arranged in the first groove 31 of the lower die base 3 and is installed through the rotating shaft 85, one end of the third return spring 86 is connected to the bottom surface of the third punch 84, and the other end of the third return spring 86.

The bottom plate 4 is further provided with a second groove 41 which is opposite to the core rod support plate 10, a second return spring 9 is arranged in the second groove 41, the top end of the second return spring 9 is fixedly connected with the core rod support plate 10, and the bottom end of the second return spring is abutted to the bottom of the second groove 41.

The working principle is as follows:

when the periphery of the automobile exhaust pipe 6 needs to be closed, the exhaust pipe 6 is placed on the core rod 5, the press machine is started, the upper workbench of the press machine moves downwards to push the upper die holder 1 to move downwards, under the action of pressure, the slotting tool 21, the clamping plate 71, the second punch 72, the pressing rod 81 and the ejector block 82 move downwards, the slotting tool 21 pushes the sliding block 27 and the sliding block 27 to push the first punch 28 to move inwards, and the ejector block 82 presses downwards to enable the other end of the semicircular sliding block 83 to tilt to push the third punch 84 to move upwards. The above movement simultaneously moves the two first punches 28, the second punch 72, and the third punch 84 inward, and the exhaust pipe 6 on the mandrel 5 is formed.

When the press machine is reset upwards, the upper die holder 1, the slotting tool 21, the clamping plate 71, the second punch 72, the pressing rod 81 and the ejector block 82 are driven to move upwards to reset, the two first punches 28 are reset under the action of the first reset spring 24, the third punch 84 is reset under the action of the third reset spring 86, the second reset spring 9 is reset to eject the mandrel support plate 10 and the mandrel 5, a product on the mandrel 5 is taken out, a new exhaust pipe 6 is placed, and the process is repeated.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes made by the present specification can be changed, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.

Claims (5)

1. The utility model provides a close mechanism for automobile exhaust pipe, is including the plug that is used for suit blast pipe, its characterized in that: the device comprises a lower die base, a mandrel support plate, a first machining mechanism, a second machining mechanism, a third machining mechanism and a lower die base, wherein the mandrel is fixedly arranged at one end, far away from the closing-in end of the exhaust pipe, of the mandrel, the mandrel support plate is arranged in a through hole of the lower die base in a relatively movable mode, the lower die base is fixedly arranged on a bottom plate, the first machining mechanism, the second machining mechanism and the third machining mechanism are symmetrically arranged on the left side and the right side of the mandrel, the second machining mechanism is arranged above the first machining mechanism.

2. The necking mechanism for the automobile exhaust pipe according to claim 1, wherein: first processing agency includes slotting tool, baffle, spring beam, first reset spring, protection casing, spring pad, slider and first drift, the slider place in the top surface of die holder, the slider in the first drift of inboard fixed connection, but pass through inclined plane relative slip ground and slotting tool butt at the top, the top fixed mounting of slotting tool in the upper die base, the outside of slider is located to the baffle, just baffle fixed mounting is in on the die holder, the one end of spring beam runs through threaded connection slider, the other end extend to in the protection casing behind the through-hole of baffle, protection casing fixed mounting in the baffle, spring beam is located to first reset spring cover, first reset spring's one end and baffle butt, the other end and spring pad butt, the spring pad cover is located the spring beam.

3. The necking mechanism for the automobile exhaust pipe according to claim 1, wherein: the second machining mechanism comprises a clamping plate and a second punch, the top end of the clamping plate is fixedly connected with the upper die base, and the top end of the second punch is fixedly installed in the clamping plate.

4. The necking mechanism for the automobile exhaust pipe according to claim 1, wherein: the third processing mechanism comprises a pressing rod, an ejector block, a semicircular sliding block, a third punch, a rotating shaft and a third reset spring, the top end of the pressing rod is fixedly connected with the upper die base and the bottom of the pressing rod is fixedly connected with the ejector block, the semicircular sliding block is arranged in the semicircular sliding groove of the bottom plate in a relatively sliding mode, one end of the semicircular sliding block is just opposite to the ejector block, the other end of the semicircular sliding block is abutted to the bottom surface of the third punch, the third punch is arranged in the first groove of the lower die base and is installed through the rotating shaft, and one end of the third reset spring is connected to the bottom surface of the third punch, and the other end of the third.

5. The necking mechanism for the automobile exhaust pipe according to claim 1, wherein: the bottom plate is further provided with a second groove which is right opposite to the core rod support plate, a second reset spring is arranged in the second groove, and the top end of the second reset spring is fixedly connected with the core rod support plate, and the bottom end of the second reset spring is abutted to the groove bottom of the second groove.

Images