A high-efficiency continuous mold for automobile exhaust pipe

Abstract

The present application relates to an efficient continuous die for automobile exhaust pipes, including an upper die and a lower die, and also including a punching tool, a pre-cutting tool, a cutting tool and a rolling mechanism. The rolling mechanism includes an upper rolling die, a lower rolling die, a rolling cylinder and a rolling support assembly. The lower die has a bearing surface for bearing the plate to be processed, and the bearing surface of the lower die is provided with punching holes and pre-cutting holes. The upper surface of the lower die is also provided with a mounting groove, and the lower surface of the upper rolling die is provided with a semicircular groove, and the upper surface of the lower rolling die is provided with a semicircular groove. The efficient continuous die for automobile exhaust pipes of the present application has the functions of punching, cutting and rolling, and punching, cutting and rolling can be achieved by one mold closing. In the production process of the exhaust pipe, there is no need to use a punching die, a cutting die and a rolling die, which avoids the staff from frequently moving and positioning the plate to be processed between the punching die, the cutting die and the rolling die, saving time and improving production efficiency, while reducing mold and labor costs.

Description

Technical Field

[0001] The present application relates to the field of automobile parts production and manufacturing, and in particular to a high-efficiency continuous mold for automobile exhaust pipes. Background Art

[0002] With the rapid development of the economy, cars have gradually become popular in people's daily lives. Cars are composed of many auto parts, and automobile exhaust pipes are one of the important components of cars. In the prior art, the traditional stamping production process of automobile exhaust pipes includes multiple production processes such as punching, cutting, and curling. Each process is operated and processed separately, and each process requires a special mold. When switching between different processes, the material to be processed needs to be transferred to the corresponding mold, resulting in high equipment, mold and personnel costs and low production efficiency in the exhaust pipe production process. Summary of the invention

[0003] In order to improve the technical problems of high equipment, mold and personnel costs and low production efficiency in the above-mentioned prior art in the exhaust pipe production process, the present application provides a high-efficiency continuous mold for automobile exhaust pipes.

[0004] The high-efficiency continuous die for automobile exhaust pipe provided in this application adopts the following technical solution:

[0005] A high-efficiency continuous die for automobile exhaust pipes, comprising an upper die and a lower die capable of relatively moving and closing the die, and also comprising a punching tool, a pre-cutting tool, a cutting tool and a rolling mechanism which are sequentially arranged at intervals along the conveying direction of a plate to be processed, the distance between the pre-cutting tool and the cutting tool being the length of the exhaust pipe, the rolling mechanism comprising an upper rolling die, a lower rolling die, a rolling cylinder and a rolling support assembly, the punching tool, the pre-cutting tool and the upper rolling die are fixedly arranged on the lower surface of the upper die, the lower die has a bearing surface for carrying the plate to be processed, a punching blanking hole corresponding to the punching tool is provided on the bearing surface of the lower die, a pre-cutting blanking hole corresponding to the pre-cutting tool is also provided on the bearing surface of the lower die, the pre-cutting tool is used to partially cut the plate to be processed and cut a connecting strip on the plate to be processed, the upper surface of the lower die is also provided with an installation groove, the cutting tool and the lower rolling die are fixedly arranged in the installation groove, the blade of the cutting tool and the bearing surface are in the same plane, the lower rolling die and the upper The rolling molds are arranged relatively upward and downward, and the rolling cylinder is arranged between the lower rolling mold and the upper rolling mold. A semicircular groove is opened on the lower surface of the upper rolling mold, and a semicircular groove is opened on the upper surface of the lower rolling mold. The radius of the semicircular groove on the upper rolling mold is the same as that on the lower rolling mold, and the cross-section of the rolling cylinder is circular; the rolling cylinder has a mold opening position and a mold closing position, and the mold closing position is below the mold opening position. When the rolling cylinder is in the mold closing position, the semicircular groove on the upper rolling mold and the semicircular groove on the lower rolling mold are combined into a circular groove. At this time, the rolling cylinder is located in the circular groove and the center line of the circular groove coincides with the center line of the rolling cylinder, and a molding space for the exhaust pipe is formed between the rolling cylinder and the groove wall of the circular groove; when the rolling cylinder is in the mold opening position, the upper side of the outer circumferential surface of the rolling cylinder is tangent to the plane where the bearing surface is located, and the rolling support assembly is arranged in the mounting groove. The rolling support assembly is used to support the rolling cylinder, and the rolling support assembly can be extended and retracted up and down to realize the switching of the rolling cylinder between the mold opening position and the mold closing position.

[0006] By adopting the above technical scheme, when the high-efficiency continuous die for automobile exhaust pipe of the present application is used, the plate to be processed is first placed on the bearing surface at the position corresponding to the punching tool and the pre-cutting tool, and then the upper die and the lower die are closed, the punching tool punches holes in the plate to be processed, the pre-cutting tool performs partial cutting on the plate to be processed and cuts a connecting strip on the plate to be processed, and then the die is opened to move the plate to be processed a distance of the exhaust pipe length, so that the part of the plate to be processed that has been punched and pre-cut is on the roll cylinder, so that the connecting strip is above the cutting tool, and the upper roll die is squeezed first when the die is closed next time The sheet to be processed on the rolling cylinder is made to fit on the upper half of the circumference of the rolling cylinder, and then the mold is closed continuously so that the rolling support assembly is gradually compressed and drives the rolling cylinder to move from the mold opening position to the mold closing position. During the process of the rolling support assembly being gradually compressed, the cutting tool cuts off the material belt, thereby dividing the sheet to be processed into standard sheets of the required length. When the rolling cylinder moves to the mold closing position, the upper rolling mold and the lower rolling mold cooperate with the rolling cylinder to roll the standard sheet into an exhaust pipe, and then the mold is opened to remove the exhaust pipe; after removing the exhaust pipe, continue to move the sheet to be processed by a distance of the exhaust pipe length, and then continue the subsequent operations until the processing is completed. The efficient continuous mold for automobile exhaust pipes of the present application has the functions of punching, cutting and rolling, and punching, cutting and rolling can be achieved by one mold closing, thereby improving production efficiency. In the production process of the exhaust pipe, there is no need to use punching molds, cutting molds and rolling molds, which avoids the staff from frequently moving and positioning the sheet to be processed between the punching molds, cutting molds and rolling molds, further saving time and improving production efficiency, while reducing mold and labor costs.

[0007] Optionally, the rolling support assembly includes a rolling support member, a rolling elastic member and a locking positioning member. The rolling support member is fixedly connected to the rolling cylinder, the rolling elastic member is fixedly connected to the rolling support member, the rolling elastic member is fixed in the mounting groove, the rolling elastic member can be extended and retracted in the vertical direction, and when the rolling cylinder is in the mold opening position, the rolling elastic member is in the minimum compression state, and the locking positioning member can lock the rolling cylinder in the mold opening position.

[0008] By adopting the above technical solution, the locking positioning member first locks the roll cylinder in the mold opening position when the mold is closed, and then controls the locking positioning member to release the lock of the roll cylinder when the upper roll mold squeezes the sheet to be processed on the roll cylinder to make it fit on the upper half of the circumference of the roll cylinder, which can ensure that the sheet to be processed on the roll cylinder is first squeezed and fit on the upper half of the circumference of the roll cylinder when the mold is closed, thereby ensuring that when the roll cylinder moves from the mold opening position to the mold closing position, both sides of the sheet to be processed can enter the semicircular groove of the lower roll mold, so as to smoothly roll out the exhaust pipe. In addition, when the mold is opened, the roll elastic member can automatically reset and drive the roll cylinder to move from the mold closing position to the mold opening position.

[0009] Optionally, the rolling cylinder is a split structure, which includes a first cylinder and a second cylinder. The first cylinder and the second cylinder are coaxially spliced ​​to form a rolling cylinder, the first cylinder is located on the side of the second cylinder away from the cutting tool, a rolling support assembly is provided at the end of the first cylinder away from the cutting tool, and a rolling support assembly is also provided at the end of the second cylinder close to the cutting tool; an auxiliary pipe unloading mechanism is also provided in the mounting groove, the auxiliary pipe unloading mechanism includes a first mounting seat, a second mounting seat, a lifting drive member and a horizontal drive member, the rolling support assembly located at the end of the first cylinder away from the cutting tool is installed on the first mounting seat, the second mounting seat is located below the first mounting seat, the lifting drive member is arranged on the second mounting seat to drive the first mounting seat to rise and fall, and the horizontal drive member is arranged on the groove wall of the mounting groove to drive the second mounting seat to move along the center line direction of the first cylinder.

[0010] By adopting the above technical solution, after the exhaust pipe is processed, the second mounting seat is first driven by the horizontal driving member to move along the center line direction of the first column, so that the first column is pulled out from the end of the exhaust pipe, and then the first mounting seat is driven down by the lifting driving member so that the first column is lower than the exhaust pipe, thereby exposing the corresponding end of the exhaust pipe, thereby facilitating the removal of the exhaust pipe from the second column.

[0011] Optionally, the mounting groove is located on the side walls on both sides of the rolling cylinder, and corresponding accommodating grooves are opened. A plate auxiliary support assembly is arranged in each of the two accommodating grooves. The plate auxiliary support assembly includes a support plate, a top support rod and a supporting elastic member. The support plate is rotatably mounted in the accommodating groove. The rotation axis of the support plate is parallel to the center line of the rolling cylinder. The support plate has a supporting position and a retracted position. The support plate can switch between the supporting position and the retracted position by rotation. When the support plate is in the supporting position, the upper plate surface of the support plate is coplanar with the bearing surface, and the support plate partially extends outward from the accommodating groove to form a supporting portion for supporting the plate to be processed; When the support plate is in the retracted position, the support plate is completely located in the accommodating groove, and a top support rod mounting hole is also opened on the bottom wall of the accommodating groove, one end of the top support rod is always in contact with the lower plate surface of the support plate, and the other end of the top support rod is adapted to be inserted in the top support rod mounting hole, and the top support rod can be guided and moved in the top support rod mounting hole, and the support elastic member is installed in the top support rod mounting hole, one end of the support elastic member is fixedly connected to the top support rod, and the other end of the support elastic member is fixed in the top support rod mounting hole, and the support elastic member can drive the support plate to switch from the retracted position to the supporting position, and the support plate is in the supporting position when the support elastic member is in the minimum compression state.

[0012] By adopting the above technical solution, the plate auxiliary support assembly can provide good support for the portion of the plate to be processed that needs to be curled, thereby preventing tilting from having an adverse effect on the curling.

[0013] Optionally, the lifting drive member and the horizontal drive member are both pneumatic cylinders.

[0014] Optionally, a controller is also included, and a pressure sensor is fixedly installed on the outer circumference of the winding cylinder. The pressure sensor is electrically connected to the controller. When the sheet to be processed is squeezed and adhered to the upper half of the circumference of the winding cylinder by the upper rolling die, the sheet to be processed squeezes the pressure sensor, and the pressure sensor converts the detected pressure signal into an electrical signal and transmits it to the controller. The controller controls the locking positioning piece to no longer lock the winding cylinder.

[0015] By adopting the above technical solution, the locking positioning member can be accurately and automatically controlled to release the lock on the rolling cylinder.

[0016] Optionally, the upper surface of the lower rolling mold is also provided with guiding slopes on both sides of the semicircular groove, and the two guiding slopes are in an inverted eight-shape, and the two guiding slopes are connected to the semicircular groove on the lower rolling mold. The two guiding slopes are used to guide the two sides of the plate to be processed into the semicircular groove on the lower rolling mold.

[0017] By adopting the above technical solution, it is further ensured that both sides of the plate to be processed can smoothly enter the semicircular groove of the lower rolling die, so that the exhaust pipe can be smoothly rolled.

[0018] Optionally, a guide column is fixedly provided on the upper surface of the lower mold, and the guide column is vertically arranged. The lower surface of the upper mold is provided with a guide hole that cooperates with the guide column for guiding movement.

[0019] By adopting the above technical solution, the precision of the upper mold and the lower mold when closing the mold can be improved, thereby improving the processing precision of the exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the efficient continuous mold for an automobile exhaust pipe according to an embodiment of the present application from one perspective;

[0021] Figure 2 This is a schematic diagram of the overall structure of the efficient continuous mold for an automobile exhaust pipe according to an embodiment of the present application from another perspective;

[0022] Figure 3 It is a schematic diagram showing the structure of the lower die;

[0023] Figure 4 It is a schematic diagram showing the structure of the upper die;

[0024] Figure 5 It is a schematic diagram of the structure of the plate to be processed;

[0025] Figure 6 yes Figure 2 A magnified view of the structure at center A;

[0026] Figure 7 is a schematic diagram showing the structure of the curling support assembly;

[0027] Figure 8 It is a schematic diagram showing the structure of the auxiliary support assembly of the plate.

[0028] Explanation of reference numerals: 1, upper die; 11, guide hole; 2, lower die; 21, guide column; 22, bearing surface; 23, punching hole; 24, pre-cutting hole; 25, mounting groove; 26, receiving groove; 3, punching tool; 4, pre-cutting tool; 5, cutting tool; 6, rolling mechanism; 61, upper rolling die; 62, lower rolling die; 63, rolling cylinder; 631, first cylinder; 632, second cylinder; 64, rolling support assembly; 641, rolling support member; 641 1. Support rod; 6412. Arc-shaped support plate; 642. Rolled elastic member; 643. Locking positioning member; 65. Semicircular groove; 66. Guide slope; 67. Pressure sensor; 7. Plate to be processed; 71. Material belt; 8. Auxiliary pipe unloading mechanism; 81. First mounting seat; 82. Second mounting seat; 83. Lifting drive member; 84. Horizontal drive member; 9. Plate auxiliary support assembly; 91. Support plate; 92. Top support rod; 93. Support elastic member; 94. Rotating shaft. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings.

[0030] Reference Figure 1 and Figure 2 The embodiment of the present application discloses a high-efficiency continuous mold for an automobile exhaust pipe, including an upper mold 1 and a lower mold 2 that can move relative to each other for closing the mold, a guide column 21 is fixedly provided on the upper surface of the lower mold 2, and the guide column 21 is vertically arranged, and a guide hole 11 is opened on the lower surface of the upper mold 1 for guiding the movement of the guide column 21.

[0031] Refer to Figure 3 and Figure 4 The automobile exhaust pipe high-efficiency continuous die of the present application also includes a punching tool 3, a pre-cutting tool 4, a cutting tool 5 and a rolling mechanism 6 which are sequentially arranged at intervals along the conveying direction of the plate 7 to be processed, and the distance between the pre-cutting tool 4 and the cutting tool 5 is the length of the exhaust pipe. The punching tool 3 and the pre-cutting tool 4 are fixedly arranged on the lower surface of the upper die 1, and two pre-cutting tools 4 are arranged at intervals perpendicular to the conveying direction of the plate 7 to be processed. The lower die 2 has a bearing surface 22 for carrying the plate 7 to be processed, and a punching blanking hole 23 corresponding to the punching tool 3 is opened on the bearing surface 22 of the lower die 2, and a pre-cutting blanking hole 24 corresponding to the pre-cutting tool 4 is also opened on the bearing surface 22 of the lower die 2. When the punching tool 3 punches a hole on the plate 7 to be processed, the waste material generated by the punching falls into the punching blanking hole 23.

[0032] Refer to Figure 5The pre-cutting tool 4 is used to partially cut the plate 7 to be processed and cut a connecting strip 71 on the plate 7 to be processed. The connecting strip 71 is the portion of the plate 7 to be processed corresponding to the interval between the two pre-cutting tools 4. When the pre-cutting tool 4 cuts the plate 7 to be processed, the waste generated by the cutting falls into the pre-cutting blanking hole 24. The cutting tool 5 is used to cut the connecting strip 71 of the plate 7 to be processed so as to divide the plate 7 to be processed into standard plates of the exhaust pipe length. The rolling mechanism 6 is used to roll the standard plate into an exhaust pipe.

[0033] Reference Figure 6 and Figure 7 The rolling mechanism 6 includes an upper rolling die 61, a lower rolling die 62, a rolling cylinder 63 and a rolling support assembly 64. The upper rolling die 61 is fixedly arranged on the lower surface of the upper die 1, and a semicircular groove 65 is provided on the lower surface of the upper rolling die 61. A mounting groove 25 is also provided on the upper surface of the lower die 2, and the cutting tool 5 and the lower rolling die 62 are fixedly arranged in the mounting groove 25. The blade of the cutting tool 5 is in the same plane as the bearing surface 22, and the cutting tool 5 is a long strip structure, and the two ends of the cutting tool 5 are respectively fixed on the two side walls of the mounting groove 25. The lower rolling die 62 is arranged opposite to the upper rolling die 61 in upper and lower directions, and the rolling cylinder 63 is arranged between the lower rolling die 62 and the upper rolling die 61. A semicircular groove 65 is also provided on the upper surface of the lower rolling die 62, and the radius of the semicircular groove 65 on the upper rolling die 61 and the semicircular groove 65 on the lower rolling die 62 are the same. The upper surface of the lower rolling die 62 is also provided with guiding bevels 66 on both sides of the semicircular groove 65. The two guiding bevels 66 are in an inverted eight-shaped shape. The two guiding bevels 66 are connected to the semicircular groove 65 on the lower rolling die 62. The two guiding bevels 66 are used to guide the two sides of the plate 7 to be processed into the semicircular groove 65 on the lower rolling die 62. The cross section of the rolling cylinder 63 is circular and the center line of the rolling cylinder 63 is horizontally arranged. The rolling cylinder 63 has a mold opening position and a mold closing position, and the mold closing position is below the mold opening position. When the upper die 1 and the lower die 2 are driven to close the mold, the semicircular groove 65 on the upper rolling die 61 and the semicircular groove 65 on the lower rolling die 62 are combined into a circular groove. At this time, the rolling cylinder 63 is located in the circular groove and the center line of the circular groove coincides with the center line of the rolling cylinder 63. The molding space of the exhaust pipe is formed between the rolling cylinder 63 and the groove wall of the circular groove. When the upper mold 1 and the lower mold 2 are opened, the upper side of the outer circumference of the rolling cylinder 63 is tangent to the plane where the bearing surface 22 is located. The rolling support assembly 64 is arranged in the installation groove 25, and the rolling support assembly 64 is used to support the rolling cylinder 63. The rolling support assembly 64 can be extended and retracted up and down to realize the switching of the rolling cylinder 63 between the mold opening position and the mold closing position.

[0034] Continue to refer to Figure 3The rolling cylinder 63 is a split structure, and the rolling cylinder 63 includes a first cylinder 631 and a second cylinder 632. The first cylinder 631 and the second cylinder 632 are coaxially spliced ​​to form the rolling cylinder 63. The first cylinder 631 is located on the side of the second cylinder 632 away from the cutting tool 5. The end of the first cylinder 631 away from the cutting tool 5 is provided with a rolling support assembly 64, and the end of the second cylinder 632 close to the cutting tool 5 is also provided with a rolling support assembly 64. Figure 6 and Figure 7 The rolling support assembly 64 includes a rolling support member 641, a rolling elastic member 642 and a locking positioning member 643. The rolling support member 641 is fixedly connected to the rolling cylinder 63, the rolling elastic member 642 is fixedly connected to the rolling support member 641, and the rolling elastic member 642 is fixed in the mounting groove 25. The rolling elastic member 642 can be extended and retracted in the vertical direction. When the rolling cylinder 63 is in the mold opening position, the rolling elastic member 642 is in the minimum compression state, and the locking positioning member 643 can lock and position the rolling cylinder 63 in the mold opening position. When the mold is closed, the locking positioning member 643 first locks the roll cylinder 63 in the mold opening position, and when the upper roll mold 61 squeezes the sheet material 7 to be processed on the roll cylinder 63 so that it fits on the upper half of the circumference of the roll cylinder 63, the locking positioning member 643 is controlled to release the lock of the roll cylinder 63, which can ensure that the sheet material 7 to be processed on the roll cylinder 63 is squeezed and fit on the upper half of the circumference of the roll cylinder 63 when the mold is closed, so as to ensure that when the roll cylinder 63 moves from the mold opening position to the mold closing position, both sides of the sheet material 7 to be processed can enter the semicircular groove 65 of the lower roll mold 62, so as to smoothly roll out the exhaust pipe. In addition, when the mold is opened, the roll elastic member 642 can automatically reset and drive the roll cylinder 63 to move from the mold closing position to the mold opening position.

[0035] Continue to refer to Figure 3 , an auxiliary pipe unloading mechanism 8 is also arranged in the mounting groove 25, and the auxiliary pipe unloading mechanism 8 includes a first mounting seat 81, a second mounting seat 82, a lifting drive member 83 and a horizontal drive member 84. The second mounting seat 82 is located below the first mounting seat 81, and the lifting drive member 83 is arranged on the second mounting seat 82 to drive the first mounting seat 81 to rise and fall, and the horizontal drive member 84 is arranged on the bottom wall of the mounting groove 25 to drive the second mounting seat 82 to move along the center line direction of the first column 631. In this embodiment, the lifting drive member 83 and the horizontal drive member 84 are both pneumatic cylinders. After the exhaust pipe is processed, the second mounting seat 82 is first driven by the horizontal drive member 84 to move along the center line direction of the first column 631, so that the first column 631 is pulled out from the end of the exhaust pipe, and then the first mounting seat 81 is driven to descend by the lifting drive member 83 so that the first column 631 is lower than the exhaust pipe, so that the corresponding end of the exhaust pipe is exposed, and then the exhaust pipe is conveniently removed from the second column 632.

[0036] Continue to refer to Figure 3 and Figure 7The rolling support assembly 64 located at the end of the first column 631 away from the cutting tool 5 is installed on the first mounting seat 81, and the rolling support assembly 64 located at the end of the second column 632 close to the cutting tool 5 is installed on the bottom wall of the mounting groove 25. In this embodiment, the rolling support member 641 includes a support rod 6411 and an arc-shaped support plate 6412, the bottom of the arc-shaped support plate 6412 is fixedly connected to the top of the support rod 6411, and the arc-shaped support plate 6412 is used to support the rolling cylinder 63 and is fixedly connected to the rolling cylinder 63. The rolling elastic member 642 is a spring, one end of which is welded and fixed to the bottom end of the support rod 6411, and the rolling elastic member 642 is coaxially arranged with the support rod 6411. The locking positioning member 643 is an electric push rod, and a through hole is provided on the outer peripheral surface of the support rod 6411 and penetrates the support rod 6411 in the radial direction. The telescopic rod of the locking positioning member 643 can be adapted to be inserted in the through hole, and the telescopic rod of the locking positioning member 643 can move in the through hole.

[0037] Continue to refer to Figure 3 The upper surface of the first mounting seat 81 is provided with a vertically extending mounting seat blind hole. The arc-shaped support plate 6412 of the curling support assembly 64 located at the end of the first column 631 away from the cutting tool 5 is supported and fixed on the first column 631. The corresponding curling elastic member 642 and the bottom end of the support rod 6411 are adapted to be inserted in the mounting seat blind hole, and the end of the curling elastic member 642 away from the support rod 6411 is fixed on the bottom wall of the mounting seat blind hole. The corresponding locking positioning member 643 is fixed on the upper surface of the first mounting seat 81. When the telescopic rod of the locking positioning member 643 is extended, it can be inserted into the through hole of the support rod 6411 to realize the locking and positioning of the first column 631; when the telescopic rod of the locking positioning member 643 is retracted from the through hole of the support rod 6411, the first column 631 is unlocked. A vertically extending bottom wall blind hole is provided on the bottom wall of the mounting groove 25 below the end of the second column 632 near the cutting tool 5. The arc-shaped support plate top support of the rolling support assembly located at the end of the second column 632 near the cutting tool 5 is fixed on the second column 632, and the corresponding rolling elastic member and the bottom end of the support rod are adapted to be inserted in the bottom wall blind hole, and the end of the rolling elastic member away from the support rod is fixed on the bottom wall of the bottom wall blind hole. The corresponding locking positioning member is fixed on the bottom wall of the mounting groove, and when the telescopic rod of the locking positioning member is extended, it can be inserted into the through hole of the support rod to realize the locking and positioning of the second column 632; when the telescopic rod of the locking positioning member is retracted from the through hole of the support rod, the second column 632 is unlocked.

[0038] Reference Figure 6 and Figure 8, the mounting groove 25 is located on the side walls of both sides of the rolling cylinder 63, and a corresponding receiving groove 26 is opened, and a plate auxiliary support assembly 9 is arranged in each of the two receiving grooves 26. The plate auxiliary support assembly 9 includes a support plate 91, a top support rod 92 and a support elastic member 93, and the support elastic member 93 can be a spring. The support plate 91 is rotatably installed in the receiving groove 26 through a rotating shaft 94, and the rotation axis of the support plate 91 is parallel to the center line of the rolling cylinder 63. The support plate 91 has a supporting position and a retracted position, and the support plate 91 can switch between the supporting position and the retracted position by rotation. When the support plate 91 is in the supporting position, the upper plate surface of the support plate 91 is coplanar with the bearing surface 22, and the support plate 91 partially extends outward from the receiving groove 26 to form a support portion for supporting the plate 7 to be processed; when the support plate 91 is in the retracted position, the support plate 91 is completely located in the receiving groove 26. A top support rod mounting hole is also provided on the bottom wall of the accommodating groove 26. One end of the top support rod 92 always contacts the lower plate surface of the support plate 91, and the other end of the top support rod 92 is adapted to be inserted in the top support rod mounting hole. The top support rod 92 can be guided and moved in the top support rod mounting hole. The support elastic member 93 is installed in the top support rod mounting hole. One end of the support elastic member 93 is fixedly connected to the top support rod 92, and the other end of the support elastic member 93 is fixed in the top support rod mounting hole. When the support elastic member 93 is reset, it can drive the support plate 91 to switch from the stowed position to the support position. When the support elastic member 93 is in the minimum compression state, the support plate 91 is in the support position.

[0039] Continue to refer to Figure 6 The automobile exhaust pipe high-efficiency continuous die of the present application also includes a controller (not shown in the figure), and a pressure sensor 67 is fixedly installed on the outer circumference of the coil cylinder 63, and the pressure sensor 67 is electrically connected to the controller. When the plate 7 to be processed is pressed and fitted on the upper half of the circumference of the coil cylinder 63 by the upper coiling die 61, the plate 7 to be processed presses the pressure sensor 67, and the pressure sensor 67 converts the detected pressure signal into an electrical signal and transmits it to the controller, and the controller automatically and synchronously controls the telescopic rods of the two locking positioning members 643 to retract and unlock. The controller is also electrically connected to the lifting drive member 83 and the horizontal drive member 84 to realize the motion control of the lifting drive member 83 and the horizontal drive member 84.

[0040] The implementation principle of the embodiment of the present application is as follows: when the efficient continuous die for automobile exhaust pipe of the present application is used, the plate 7 to be processed is first placed on the bearing surface 22 at positions corresponding to the punching tool 3 and the pre-cutting tool 4, and then the upper die 1 and the lower die 2 are closed, the punching tool 3 punches holes on the plate 7 to be processed, the pre-cutting tool 4 performs partial cutting on the plate 7 to be processed and cuts out a connecting strip 71 on the plate 7 to be processed, and then the die is opened to move the plate 7 to be processed by a distance of the exhaust pipe length, so that the punching and pre-cutting on the plate 7 to be processed have been completed. The cut part is on the roll cylinder 63 and the support plate 91. At this time, the material belt 71 is above the cutting tool 5. When the mold is closed next time, the upper roll mold 61 first squeezes the sheet 7 to be processed on the roll cylinder 63 to make it bend and fit on the upper half of the circumference of the roll cylinder 63. When the sheet 7 to be processed is bent, the support plate 91 is squeezed to rotate to the retracted position. The sheet 7 to be processed squeezes the pressure sensor 67. The pressure sensor 67 converts the detected pressure signal into an electrical signal and transmits it to the controller. The controller controls the locking positioning member 643 to no longer lock the roll cylinder 6 3, and then continue to close the mold so that the rolling support component 64 is gradually compressed and drives the rolling cylinder 63 to move from the mold opening position to the mold closing position. During the gradual compression of the rolling support component 64, the cutting tool 5 cuts off the material belt 71, thereby dividing the sheet 7 to be processed into standard sheets of required length. When the rolling cylinder 63 moves to the mold closing position, the upper rolling mold 61 and the lower rolling mold 62 cooperate with the rolling cylinder 63 to roll the standard sheet into an exhaust pipe. After the exhaust pipe is processed, the upper mold 1 and the lower mold 2 are opened, and then the horizontal driving member 84 drives the first The second mounting seat 82 moves along the center line direction of the first column 631, so that the first column 631 is pulled out from the end of the exhaust pipe, and then the first mounting seat 81 is driven down by the lifting drive member 83 so that the first column 631 is lower than the exhaust pipe, so that the corresponding end of the exhaust pipe is exposed, and then the exhaust pipe is conveniently removed from the second column 632, and then the exhaust pipe is removed; after removing the exhaust pipe, the various components are reset, and then the plate 7 to be processed is continued to be moved a distance of the exhaust pipe length, and then the subsequent operations are continued until the processing is completed. The automobile exhaust pipe high-efficiency continuous mold of the present application has the functions of punching, cutting, and rolling, and punching, cutting, and rolling can be achieved by one mold closing, thereby improving production efficiency. In the process of exhaust pipe production, there is no need to use punching molds, cutting molds, and rolling molds, which avoids the staff from frequently moving and positioning the plate 7 to be processed between the punching molds, cutting molds, and rolling molds, further saving time and improving production efficiency, while reducing mold and labor costs.

[0041] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An efficient continuous die for an automobile exhaust pipe, comprising an upper die (1) and a lower die (2) that can move relative to each other for clamping, characterized in that: The machine also comprises a punching tool (3), a pre-cutting tool (4), a cutting tool (5) and a rolling mechanism (6) which are arranged in sequence along the conveying direction of the plate (7) to be processed. The distance between the pre-cutting tool (4) and the cutting tool (5) is the length of the exhaust pipe. The rolling mechanism (6) comprises an upper rolling die (61), a lower rolling die (62), a rolling cylinder (63) and a rolling support assembly (64). The punching tool (3), the pre-cutting tool (4) and the upper rolling die (61) are fixedly arranged on the lower surface of the upper die (1). The lower die (2) has a bearing surface (22) for bearing the plate (7) to be processed. The bearing surface (22) of the lower die (2) A punching hole (23) corresponding to the punching tool (3) is formed on the upper surface, a pre-cutting hole (24) corresponding to the pre-cutting tool (4) is formed on the bearing surface (22) of the lower die (2), the pre-cutting tool (4) is used to partially cut the plate (7) to be processed and cut a connecting strip (71) on the plate (7) to be processed, and a mounting groove (25) is formed on the upper surface of the lower die (2), the cutting tool (5) and the lower rolling die (62) are fixedly arranged in the mounting groove (25), the blade of the cutting tool (5) and the bearing surface (22) are in the same plane, and the lower rolling die (62) and the upper rolling die (61) are arranged vertically opposite to each other. The rolling cylinder (63) is arranged between the lower rolling mold (62) and the upper rolling mold (61); a semicircular groove (65) is provided on the lower surface of the upper rolling mold (61); a semicircular groove (65) is provided on the upper surface of the lower rolling mold (62); the semicircular groove (65) on the upper rolling mold (61) and the semicircular groove (65) on the lower rolling mold (62) have the same radius; the cross section of the rolling cylinder (63) is circular; the rolling cylinder (63) has a mold opening position and a mold closing position; the mold closing position is below the mold opening position; when the rolling cylinder (63) is in the mold closing position, the semicircular groove (65) on the upper rolling mold (61) and the semicircular groove (65) on the lower rolling mold (62) are aligned with each other. The grooves (65) are assembled into a circular groove, at which time the roll cylinder (63) is located in the circular groove and the center line of the circular groove coincides with the center line of the roll cylinder (63), and a molding space for the exhaust pipe is formed between the roll cylinder (63) and the groove wall of the circular groove; when the roll cylinder (63) is in the mold opening position, the upper side of the outer peripheral surface of the roll cylinder (63) is tangent to the plane where the bearing surface (22) is located, and the roll support assembly (64) is arranged in the installation groove (25), and the roll support assembly (64) is used to support the roll cylinder (63), and the roll support assembly (64) can be extended and retracted up and down to realize the switching of the roll cylinder (63) between the mold opening position and the mold closing position; The rolling support assembly (64) comprises a rolling support member (641), a rolling elastic member (642) and a locking positioning member (643); the rolling support member (641) is fixedly connected to the rolling cylinder (63); the rolling elastic member (642) is fixedly connected to the rolling support member (641); the rolling elastic member (642) is fixed in the mounting groove (25); the rolling elastic member (642) can be extended and retracted in the vertical direction; when the rolling cylinder (63) is in the mold opening position, the rolling elastic member (642) is in the minimum compression state; and the locking positioning member (643) can lock and position the rolling cylinder (63) in the mold opening position; The rolling cylinder (63) is a split structure, comprising a first cylinder (631) and a second cylinder (632). The first cylinder (631) and the second cylinder (632) are coaxially spliced ​​to form the rolling cylinder (63). The first cylinder (631) is located on the side of the second cylinder (632) away from the cutting tool (5). A rolling support assembly (64) is provided at the end of the first cylinder (631) away from the cutting tool (5). A rolling support assembly (64) is also provided at the end of the second cylinder (632) close to the cutting tool (5). An auxiliary pipe unloading mechanism (8) is also provided in the installation groove (25). The structure (8) comprises a first mounting seat (81), a second mounting seat (82), a lifting drive member (83) and a horizontal drive member (84); the curling support assembly (64) located at an end of the first column (631) away from the cutting tool (5) is mounted on the first mounting seat (81); the second mounting seat (82) is located below the first mounting seat (81); the lifting drive member (83) is arranged on the second mounting seat (82) for driving the first mounting seat (81) to rise and fall; and the horizontal drive member (84) is arranged on the groove wall of the mounting groove (25) for driving the second mounting seat (82) to move along the center line direction of the first column (631); The invention also includes a controller. A pressure sensor (67) is fixedly mounted on the outer circumference of the rolling cylinder (63). The pressure sensor (67) is electrically connected to the controller. When the plate (7) to be processed is pressed and adhered to the upper half of the circumference of the rolling cylinder (63) by the upper rolling die (61), the plate (7) to be processed presses the pressure sensor (67). The pressure sensor (67) converts the detected pressure signal into an electrical signal and transmits it to the controller. The controller controls the locking positioning member (643) to no longer lock the rolling cylinder (63).

2. The high-efficiency continuous die for automobile exhaust pipe according to claim 1, characterized in that: The mounting groove (25) is located on the side walls of the rolling cylinder (63) on both sides, and a corresponding receiving groove (26) is opened. A plate auxiliary support assembly (9) is arranged in each of the two receiving grooves (26). The plate auxiliary support assembly (9) comprises a support plate (91), a top support rod (92) and a supporting elastic member (93). The support plate (91) is rotatably mounted in the receiving groove (26). The rotation axis of the support plate (91) is parallel to the center line of the rolling cylinder (63). The support plate (91) has a supporting position and a retracted position. The support plate (91) can be switched between the supporting position and the retracted position by rotating. When the support plate (91) is in the supporting position, the upper plate surface of the support plate (91) is coplanar with the bearing surface (22), and a portion of the support plate (91) extends outward from the receiving groove (26) to form a support for the plate (7) to be processed. When the support plate (91) is in the retracted position, the support plate (91) is completely located in the accommodating groove (26); a top support rod mounting hole is also provided on the bottom wall of the accommodating groove (26); one end of the top support rod (92) always contacts the lower plate surface of the support plate (91); the other end of the top support rod (92) is adapted to be inserted in the top support rod mounting hole; the top support rod (92) can be guided and moved in the top support rod mounting hole; a support elastic member (93) is installed in the top support rod mounting hole; one end of the support elastic member (93) is fixedly connected to the top support rod (92); the other end of the support elastic member (93) is fixed in the top support rod mounting hole; the support elastic member (93) can drive the support plate (91) to switch from the retracted position to the supporting position; when the support elastic member (93) is in the minimum compression state, the support plate (91) is in the supporting position.

3. The high-efficiency continuous die for automobile exhaust pipe according to claim 2, characterized in that: The lifting drive member (83) and the horizontal drive member (84) are both pneumatic cylinders.

4. The high-efficiency continuous die for automobile exhaust pipe according to claim 1, characterized in that: The upper surface of the lower rolling die (62) is further provided with guiding inclined surfaces (66) on both sides of the semicircular groove (65), the two guiding inclined surfaces (66) being in an inverted figure eight shape, the two guiding inclined surfaces (66) being connected to the semicircular groove (65) on the lower rolling die (62), and the two guiding inclined surfaces (66) being used to guide both sides of the plate (7) to be processed into the semicircular groove (65) on the lower rolling die (62).

5. The high-efficiency continuous die for automobile exhaust pipe according to claim 1, characterized in that: A guide column (21) is fixedly disposed on the upper surface of the lower die (2), the guide column (21) being disposed vertically, and a guide hole (11) is provided on the lower surface of the upper die (1) for guiding movement with the guide column (21).

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