Multi-station necking machine for automotive air-conditioning mufflers

Abstract

A multi-station necking machine for automobile air-conditioning mufflers, comprising a frame (1), and a stamping mechanism (2) and a clamping mechanism (3) which are disposed on the frame, wherein the frame is provided with a conveying belt (11), a loading device (4), and an unloading device (5); the loading device and the unloading device are both disposed adjacent to the conveying belt; a linearly distributed processing area is arranged on one side of the conveying belt; processing seats (6) are spaced on the conveying belt; a lower engaging groove (61) is formed on the upper side of each processing seat; a clamping plate (12) is disposed on the frame; clamping blocks (7) are disposed on the lower side of the clamping plate; upper engaging grooves (71) are formed on each clamping block; the stamping mechanism comprises: a stamping base (21), stamping holes (211), stamping rods (22), and stamping grooves (221); the stamping grooves face the processing area; a stamping cylinder (23) is fixedly disposed on the frame; the stamping cylinder is connected to the stamping rods to drive the stamping rods to reciprocate. The multi-station necking machine for automotive air-conditioning mufflers can simultaneously implement different stages of stamping and necking of mufflers on a plurality of processing seats, thereby improving production efficiency.

Description

Multi-station shrink wrapping machine for automotive air conditioning mufflers Technical Field

[0001] This invention relates to the field of muffler shrinking equipment, and more specifically to a multi-station shrinking machine for automotive air conditioning mufflers. Background Technology

[0002] The inlet or outlet of the muffler needs to be connected to a pipe with a diameter smaller than the muffler body. Existing automotive air conditioning mufflers use welding or tapering to process the inlet / outlet. Tapering is more commonly used due to its better sealing performance.

[0003] Different models of mufflers have different inlet bend shapes, requiring varying numbers of necking operations. Currently, necking machines operate by manually or with a robotic arm moving the muffler to be necked into a processing groove. A clamping block then presses down, encasing the muffler and securing it. Next, a necking cylinder operates, driving a stamping rod (with a necking groove / stamping slot at its end) on a moving base to neck the muffler's opening. Each necking operation moves the moving base, replacing the stamping rod (i.e., changing the necking groove / stamping slot). Through multiple necking operations, the necking becomes smoother, preventing cracking. After multiple necking operations are completed, the moving base resets, the clamping block rises, the necked muffler is removed, and an unnecked muffler is placed on top for the next product. This production method is inefficient. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a high-efficiency multi-station shrinking machine for automotive air conditioning mufflers to solve the aforementioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-station necking machine for automotive air conditioning mufflers, comprising a frame and a stamping mechanism and a clamping mechanism mounted on the frame. The frame is equipped with a conveyor belt, a feeding device, and a discharging device, both adjacent to the conveyor belt. A linearly distributed processing area is provided on one side of the conveyor belt. The stamping mechanism corresponds to the processing area. Processing seats are spaced apart on the conveyor belt, with an equal distance (space A) between adjacent processing seats. The distance traveled by the conveyor belt in one pass is equal to the length of space A. A lower slot is provided on the upper side of each processing seat. A clamping plate is provided on the frame, with clamping blocks on the lower side of the clamping plate. The clamping blocks are spaced apart on the upper side of the processing area, with an equal distance (space B) between adjacent clamping blocks. An upper slot is provided on each clamping block. The stamping mechanism includes:

[0006] A stamping base is fixedly mounted on the machine frame. The stamping base has a plurality of stamping holes, and the spacing between adjacent stamping holes is equal, which is the spacing C.

[0007] A stamping rod is slidably disposed in a stamping hole, and the number of stamping rods corresponds one-to-one with the stamping hole. The stamping rod is provided with a stamping groove, which gradually changes with the forward direction of the conveyor belt and faces the processing area.

[0008] A stamping cylinder is fixedly mounted on the frame. The stamping cylinder is connected to a stamping rod and drives the stamping rod to reciprocate.

[0009] As a further improvement of the present invention, the clamping block is rotatably mounted on the clamping plate. The clamping block is provided with a first receiving groove and a driven block. The machining seat is provided with a driving block and a second receiving groove. The driving block is located at the upper end of the machining seat, is arc-shaped, and is located on one side of the machining seat's forward direction. The second receiving groove is located on the other side. The first receiving groove matches the driving block, and the second receiving groove is misaligned with the lower retaining groove. The position of the driven block matches the second receiving groove. Both the upper and lower ends of the clamping block are provided with an upper retaining groove, a driven block, and a first receiving groove. The upper retaining groove, driven block, and first receiving groove at the upper and lower ends are symmetrical about the rotation axis of the clamping plate.

[0010] As a further improvement of the present invention, the frame is provided with an abutment seat, which is located below the clamping plate and on the side of the processing seat away from the stamping mechanism. The processing seat includes a connecting seat and a movable seat. The connecting seat is connected to the conveyor belt, and the movable seat is slidably connected to the connecting seat. The lower slot, the driving block, and the second receiving slot are all provided on the movable seat. The movable seat is provided with a first reset slot, and a first spring is provided in the first reset slot. One end of the first spring abuts against the first reset slot, and the other end abuts against the connecting seat. The connecting seat has a first notch on the side near the abutment seat. The clamping block includes a first abutting part, the position of which corresponds to a first notch; the clamping block includes a rotating block and a sliding block, the rotating block is rotatably mounted on the clamping plate, the sliding block is slidably mounted on the rotating block, the upper slot, the driven block, and the first receiving slot are mounted on the sliding block, the sliding block is provided with a second reset slot, the second reset slot is provided with a second spring, one end of the second spring abuts against the second reset slot, and the other end abuts against the rotating block, the rotating block is provided with a second notch on the side near the abutting seat, and the sliding block is provided with a second abutting part, the position of which corresponds to the second notch.

[0011] As a further improvement of the present invention, the movable seat is provided with a first limiting notch at one end facing the stamping mechanism, and the area between the two first limiting notches is a first driven part, the first driven part protruding through the connecting seat, and the connecting seat is provided with a first limiting protrusion at one end facing the stamping mechanism, the first limiting protrusion being located within the first limiting notch; the sliding block is provided with a second limiting notch at one end facing the stamping mechanism, and the area between the two second limiting notches is a second driven part, the second driven part protruding through the rotating block, and the rotating block is provided with a second limiting protrusion at one end facing the stamping mechanism, the second limiting protrusion being located within the second limiting notch.

[0012] As a further improvement of the present invention, the clamping plate is provided with magnets, and there are several magnets, the positions of which correspond to the positions of the clamping blocks.

[0013] As a further improvement of the present invention, the feeding device includes:

[0014] The unloading arm is rotatably mounted on the frame;

[0015] The first cylinder is mounted on the unloading arm and has a first driven rod.

[0016] The first suction cup is located at the lower end of the first driven rod and is connected to an external cylinder.

[0017] As a further improvement of the present invention, the feeding device includes:

[0018] The feeding arm is rotatably mounted on the frame;

[0019] The second cylinder is mounted on the loading arm and has a second driven rod.

[0020] The second suction cup is located at the lower end of the second driven rod and is connected to an external cylinder.

[0021] As a further improvement of the present invention, the loading arm and the unloading arm are connected and integrally formed, and the external cylinder is simultaneously connected to the first suction cup and the second suction cup, controlling one of the first suction cup and the other to inflate.

[0022] As a further improvement of the present invention, the upper slot is provided with an adjustment block on the side facing the stamping mechanism, the adjustment block is provided with an inclined pushing edge, the lower slot is provided with an adjustment groove, and when the processing seat and the clamping block are closed, the adjustment block is completely embedded in the adjustment groove.

[0023] The beneficial effect of this invention is that the multi-station shrinking machine of this application can simultaneously perform shrinking and shrinking of silencers on multiple processing seats at different progress, which greatly improves the production efficiency. Attached Figure Description

[0024] Figure 1 is a top view of the structure of the present invention;

[0025] Figure 2 is a schematic diagram of the process of the clamping block and the machining seat closing together;

[0026] Figure 3 is a schematic diagram of the process structure for separating the clamping block from the machining seat;

[0027] Figure 4 is a structural schematic diagram of the clamping block, machining seat, clamping plate, and contact seat;

[0028] Figure 5 is a top view of the machining base.

[0029] Figure 6 is a side view of the clamping block.

[0030] Figure 7 is a side view of the feeding device and the unloading device.

[0031] Figure 8 is a schematic diagram of the stamping rod and stamping groove.

[0032] Markings: 1. Frame; 11. Conveyor belt; 12. Clamping plate; 121. Magnet; 13. Contact seat; 2. Stamping mechanism; 21. Stamping seat; 211. Stamping hole; 22. Stamping rod; 221. Stamping groove; 23. Stamping cylinder; 3. Clamping mechanism; 4. Feeding device; 41. Feeding arm; 42. Second cylinder; 43. Second driven rod; 44. Second suction cup; 5. Unloading device; 51. Unloading arm; 52. First cylinder; 53. First driven rod; 54. First suction cup; 6. Processing seat; 61. Lower slot; 611. Adjustment slot; 62. Drive block; 63. Second receiving slot; 64. Connecting seat 641. First notch; 642. First limiting protrusion; 65. Movable seat; 651. First reset groove; 652. First spring; 653. First abutting part; 654. First limiting notch; 655. First driven part; 66. Passing part; 7. Clamping block; 71. Upper slot; 72. First receiving groove; 73. Driven block; 74. Rotating block; 741. Second notch; 742. Second limiting protrusion; 75. Sliding block; 751. Second reset groove; 752. Second spring; 753. Second abutting part; 754. Second limiting notch; 755. Second driven part; 8. Adjusting block; 81. Pushing edge. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0034] Referring to Figures 1-8, the multi-station shrinking machine for automotive air conditioning mufflers in this embodiment includes a frame 1 and a stamping mechanism 2 and a clamping mechanism 3 mounted on the frame 1. The frame 1 is equipped with a conveyor belt 11, a feeding device 4, and a discharging device 5. The feeding device 4 and discharging device 5 are both adjacent to the conveyor belt 11. A linearly distributed processing area is provided on one side of the conveyor belt 11. The stamping mechanism 2 corresponds to the processing area. Processing seats 6 are spaced apart on the conveyor belt 11, with an equal distance (space A) between adjacent processing seats 6. The distance traveled by the conveyor belt 11 in one pass is equal to the length of space A. A lower slot 61 is provided on the upper side of each processing seat 6. A clamping plate 12 is provided on the frame 1, and clamping blocks 7 are provided on the lower side of the clamping plate 12. The clamping blocks 7 are spaced apart on the upper side of the processing area, with an equal distance (space B) between adjacent clamping blocks 7. An upper slot 71 is provided on each clamping block 7. The stamping mechanism 2 includes:

[0035] A stamping base 21 is fixedly mounted on the frame 1. The stamping base 21 is provided with a plurality of stamping holes 211. The spacing between adjacent stamping holes 211 is equal and is called spacing C.

[0036] The stamping rod 22 is slidably disposed in the stamping hole 211. The number of the stamping rod 22 corresponds one-to-one with the stamping hole 211. The stamping rod 22 is provided with a stamping groove 221. The stamping groove 221 gradually changes with the forward direction of the conveyor belt 11. The stamping groove 221 faces the processing area.

[0037] The stamping cylinder 23 is fixedly mounted on the frame 1. The stamping cylinder 23 is connected to the stamping rod 22 and drives the stamping rod 22 to reciprocate.

[0038] Through the above technical solution, during the process of shrinking the mouth of the muffler using this equipment, the feeding device 4 continuously grabs the muffler to be shrunk and moves it into the lower slot 61 of the processing seat 6. All processing seats 6 that pass through are filled with mufflers to be processed. The unloading device 5 continuously grabs the mufflers that have been shrunk and moves them into the collection frame / external collection component. All mufflers on the processing seats 6 that pass through are removed. The conveyor belt 11 moves an equal distance each time, which is the spacing D, where spacing D = spacing C = spacing A. It pauses after each movement to allow the stamping rod 22 to stamp, and at the same time, it allows the feeding mechanism to feed and the unloading mechanism to unload.

[0039] The clamping mechanism 3 consists of a clamping plate 12 and a clamping block 7.

[0040] There are two ways to connect the clamping block 7 and the clamping plate 12:

[0041] 1. Lifting type, driven by a cylinder; in this case, the spacing B = spacing A.

[0042] 2. Rotation type: In this method, the spacing B is greater than the spacing A, so that the rotation process of adjacent clamping blocks 7 does not affect each other.

[0043] After the clamping block 7 moves into place, it fits into the machining seat 6, fixing the muffler in the upper slot 71 and the lower slot 61.

[0044] The stamping rods 22 are numbered. Taking the 8-station necking as an example, the stamping rod 22 located on the side where the conveyor belt 11 enters is number 1, the stamping rod 22 located on the side where the conveyor belt 11 leaves is number 8, and so on in sequence.

[0045] The same processing seat 6 sequentially passes through stamping rods 22 (numbers 1-8). The stamping grooves 221 on stamping rods 22-1-8 punch and compress the mufflers that pass through, completing the processing. During each compression process, stamping rods 22-1-8 punch and compress the mufflers on one processing seat 6. This single stamping process reduces the diameter of mufflers at multiple positions and different progresses. Compared to existing reduction machines where only one stamping tube is used for reduction while the others remain idle, this multi-station reduction machine simultaneously punches and compresses mufflers on multiple processing seats 6 at different progresses, significantly improving production efficiency.

[0046] Specifically, the clamping block 7 is mounted on the clamping plate 12 and is in a stable position.

[0047] Specifically, the lower slot 61 consists of two parts: an opening portion, which is the first lower slot, with a radius of curvature greater than the radius of the outer surface of the muffler; and an inner portion, which is the second lower slot, with a radius of curvature equal to the radius of the outer surface of the muffler. The upper slot 71 consists of two parts: an opening portion, which is the first upper slot, with a radius of curvature greater than the radius of the outer surface of the muffler; and an inner portion, which is the second upper slot, with a radius of curvature equal to the radius of the outer surface of the muffler. The opening of the muffler is located within the first lower slot and the first upper slot, and the stamping rod 22 can enter the first lower slot and the first upper slot to stamp and compress the muffler.

[0048] As an improved specific implementation, the clamping block 7 is rotatably mounted on the clamping plate 12. The clamping block 7 is provided with a first receiving groove 72 and a driven block 73. The processing seat 6 is provided with a driving block 62 and a second receiving groove 63. The driving block 62 is located at the upper end of the processing seat 6, is arc-shaped, and is located on one side of the processing seat 6 in the forward direction. The second receiving groove 63 is located on the other side. The first receiving groove 72 matches the driving block 62, and the second receiving groove 63 is misaligned with the lower slot 61. The position of the driven block 73 matches the second receiving groove 63. The upper and lower ends of the clamping block 7 are provided with an upper slot 71, a driven block 73, and a first receiving groove 72. The upper slot 71, the driven block 73, and the first receiving groove 72 at the upper and lower ends are symmetrical about the rotation axis of the clamping plate 12.

[0049] Through the above technical solution, during the movement of the processing seat 6, the process of clamping block 7 closing and fixing the muffler with the processing seat 6 is as follows: the processing seat 6 moves, thereby driving the drive block 62 to move until the drive block 62 abuts against the clamping block 7 (the abutting position is on one side of the first receiving groove 72). As the processing seat 6 continues to move, the drive block 62 continuously pushes the clamping block 7 to rotate (the abutting position will change) until the clamping block 7 rotates to directly above the processing seat 6. At this time, the driven block 73 is embedded in the second receiving groove 63, the drive block 62 is located in the first receiving groove 72, and the muffler is located in the upper slot 71 and the lower slot 61. The muffler is fixed and its position is stable when it is stamped by the stamping rod 22.

[0050] The process of separating the clamping block 7 from the machining seat 6 is as follows: the machining seat 6 moves, which in turn drives the driving block 62 and the second receiving groove 63 to move. The driving block 62 pushes the first receiving groove 72 (in the initial stage of separation; after separation, the driving block 62 separates from the first receiving groove 72). The second receiving groove 63 continues to push the driven block 73, which in turn drives the clamping block 7 to rotate until the clamping block 7 is completely separated from the machining seat 6.

[0051] No electronic control is required. As the machining base 6 moves, the clamping seat automatically engages with it to fix or detach, making it convenient to use and highly stable.

[0052] Specifically, the upper and lower end slots 71, driven block 73 and first receiving slot 72 are symmetrical about the rotation axis of clamping plate 12. The clamping block 7 clamps with a processing seat 6 once every 180° rotation.

[0053] Specifically, the machining base 6 has a passage portion 66 on one side where the second receiving groove 63 is located. The upper surface of the passage portion 66 is lower than the position of the clamping block 7 during rotation of the side where the driven block 73 is located. The machining base 6 can smoothly pass through the clamping block 7. That is, the height of the passage portion 66 is lower than the height of the drive block 62.

[0054] As an improved specific embodiment, the frame 1 is provided with an abutment seat 13, which is located below the clamping plate 12 and on the side of the processing seat 6 away from the stamping mechanism 2. The processing seat 6 includes a connecting seat 64 and a movable seat 65. The connecting seat 64 is connected to the conveyor belt 11, and the movable seat 65 is slidably connected to the connecting seat 64. The lower slot 61, the driving block 62, and the second receiving slot 63 are all provided on the movable seat 65. The movable seat 65 is provided with a first reset slot 651, and a first spring 652 is provided in the first reset slot 651. One end of the first spring 652 abuts against the first reset slot 651, and the other end abuts against the connecting seat 64. The connecting seat 64 is provided with a first notch 641 on the side near the abutment seat 13. The movable seat 65 is provided with... The first abutting part 653 is positioned corresponding to the first notch 641; the clamping block 7 includes a rotating block 74 and a sliding block 75. The rotating block 74 is rotatably mounted on the clamping plate 12, and the sliding block 75 is slidably mounted on the rotating block 74. The upper slot 71, the driven block 73, and the first receiving slot 72 are mounted on the sliding block 75. The sliding block 75 is provided with a second reset slot 751, and a second spring 752 is provided in the second reset slot 751. One end of the second spring 752 abuts against the second reset slot 751, and the other end abuts against the rotating block 74. The rotating block 74 is provided with a second notch 741 on the side near the abutting seat 13, and the sliding block 75 is provided with a second abutting part 753, the position of which corresponds to the second notch 741.

[0055] With the above technical solution, when the clamping block 7 and the processing seat 6 fix the muffler, the muffler is located between the movable seat 65 and the sliding block 75. As the stamping rod 22 presses, the stamping groove 221 first contacts the opening of the muffler, then pushes the movable seat 65 and the sliding block 75 towards the contact seat 13 until the first contact part 653 and the second contact part 753 contact the contact seat 13 (during this process, the first spring 652 and the second spring 752 are continuously compressed). Then, with the continuous movement of the stamping rod 22, one step of narrowing is completed; then the stamping rod 22 resets, during which the first spring 652 and the second spring 752 reset, driving the movable seat 65 and the sliding block 75 to reset. During the compression, the contact seat 13 supports the horizontal stamping force, providing high support strength and preventing the conveyor belt 11 from being subjected to horizontal stamping force, thus extending its service life. The first spring is located in the first reset groove 651, and the second spring 752 is located in the second reset groove 751, ensuring stable position.

[0056] The first contact part 653 passes through the first notch 641 and abuts against the contact seat 13, and the second contact part 753 passes through the second notch 741 and abuts against the contact seat 13, thereby reducing the movement distance during the stamping process, improving production efficiency, and reducing energy consumption.

[0057] Specifically, the abutment 13 has undulations and is misaligned with the axis of rotation of the rotating block 74.

[0058] As an improved specific implementation, the movable seat 65 has a first limiting notch 654 at one end facing the stamping mechanism 2, and the area between the two first limiting notches 654 is a first driven part 655. The first driven part 655 protrudes through the connecting seat 64, and the connecting seat 64 has a first limiting protrusion 642 at one end facing the stamping mechanism 2. The first limiting protrusion 642 is located within the first limiting notch 654. The sliding block 75 has a second limiting notch 754 at one end facing the stamping mechanism 2, and the area between the two second limiting notches 754 is a second driven part 755. The second driven part 755 protrudes through the rotating block 74, and the rotating block 74 has a second limiting protrusion 742 at one end facing the stamping mechanism 2. The second limiting protrusion 742 is located within the second limiting notch 754.

[0059] Through the above technical solution, the first driven part 655 is located between the two first limiting protrusions 642. The movement position of the movable seat 65 is restricted by the first limiting protrusions 642. After stamping, the movable seat 65 returns to the position where the side of the first limiting notch 654 abuts against the first limiting protrusion 642. It cooperates with the first reset groove 651 and the first spring 652 to restrict the movement range of the movable seat 65 from both ends, thereby improving the stability during use. The second driven part 755 is located between the two second limiting protrusions 742. The movement position of the sliding block 75 is restricted by the second limiting protrusions 742. After stamping, the sliding block 75 returns to the position where the side of the second limiting notch 754 abuts against the second limiting protrusion 742. It cooperates with the second reset groove 751 and the second spring 752 to restrict the movement range of the sliding block 75 from both ends, thereby improving the stability during use.

[0060] As an improved specific implementation, the clamping plate 12 is provided with a magnet 121, and there are a plurality of magnets 121, the positions of which correspond to the positions of the clamping blocks 7.

[0061] Through the above technical solution, the magnet 121 attracts the clamping block 7. After the clamping block 7 separates from the processing seat 6, the attraction force keeps the clamping block 7 in a vertical state, waiting for the arrival of the next processing seat 6. This ensures that the position of any clamping block 7 is consistent each time it comes into contact with the processing seat 6, thereby improving the stability during use.

[0062] Furthermore, during the closing process of the machining base 6 and the clamping block 7, the magnet 121 continuously applies an attractive force to the clamping block 7, allowing the clamping block 7 to rotate as the machining base 6 moves forward. This improves the stability of the clamping block 7 and the machining base 6 during closing, reduces impact, and extends service life. It also avoids the problem of the clamping block 7 rotating rapidly after colliding with the machining base 6, preventing proper closing.

[0063] After separating, it maintains its position and can be stably closed. When closing, it rotates slowly to avoid impact.

[0064] As one specific embodiment of the improvement, the feeding device 5 includes:

[0065] The unloading arm 51 is rotatably mounted on the frame 1;

[0066] A first cylinder 52 is mounted on the unloading arm 51, and a first driven rod 53 is mounted on the first cylinder 52.

[0067] The first suction cup 54 is located at the lower end of the first driven rod 53, and the first suction cup 54 is connected to the external cylinder.

[0068] With the above technical solution, when the unloading device 5 is used for unloading, the unloading arm 51 reciprocates and has two stopping positions: position a and position b. Position a is the stopping position of the processing seat 6 after the necking process is completed, and position b is the collection position of the collection frame / external collection component. When the unloading arm 51 moves to position a and position b, the first cylinder 52 is activated, first driving the first driven rod 53 to descend, and then driving the first driven rod 53 to rise. When the unloading arm 51 is at position a, after the first driven rod 53 descends, the first suction cup 54 adheres to the side of the muffler. When the external cylinder drives the first suction cup 54 to suck in air, a negative pressure is formed between the first suction cup 54 and the side of the muffler, gripping the muffler. Then, the first driven rod 53 rises, driving the muffler away from the lower slot 61. When the unloading arm 51 is at position b, after the first driven rod 53 descends, the external cylinder inflates the first suction cup 54, causing the negative pressure between the first suction cup 54 and the side of the muffler to disappear. The muffler falls into the collection frame / external collection component under the action of gravity, lowering the muffler. Then, the first driven rod 53 rises, driving the first suction cup 54 to rise.

[0069] The muffler is lowered after the first driven rod 53 descends to reduce impact.

[0070] As one specific embodiment of the improvement, the feeding device 4 includes:

[0071] The feeding arm 41 is rotatably mounted on the frame 1;

[0072] The second cylinder 42 is mounted on the feeding arm 41, and the second cylinder 42 has a second driven rod 43.

[0073] The second suction cup 44 is located at the lower end of the second driven rod 43 and is connected to an external cylinder.

[0074] With the above technical solution, when the feeding device 4 is used for feeding, the feeding arm 41 rotates back and forth, with two stopping positions: position c and position d. Position c is the position where the processing seat 6 of the muffler is removed, and position d is the feeding position of the gravity feeding frame. When the feeding arm 41 moves to position c and position d, the second cylinder 42 operates, first driving the second driven rod 43 to descend, and then driving the second driven rod 43 to rise. When the feeding arm 41 is at position c, after the first driven rod 53 descends, the external cylinder inflates the second suction cup 44, so that the negative pressure between the second suction cup 44 and the side of the muffler to be narrowed disappears, and the side of the muffler to be narrowed... The muffler falls into the lower slot 61 under the action of gravity, and then the second driven rod 43 rises, driving the second suction cup 44 to rise. When the loading arm 41 is at position d, after the first driven rod 53 descends, the second suction cup 44 fits against the side of the muffler to be shrunk at the loading position. The external cylinder drives the second suction cup 44 to suck in air, and a negative pressure is formed between the second suction cup 44 and the side of the muffler to be shrunk, grabbing the muffler to be shrunk. Then the second driven rod 43 rises, driving the muffler to be shrunk away from the loading position. The next muffler to be shrunk on the gravity loading rack moves to the loading position under the action of gravity, waiting for the next grab.

[0075] As an improved specific implementation, the loading arm 41 and the unloading arm 51 are connected and integrally formed, and the external cylinder is simultaneously connected to the first suction cup 54 and the second suction cup 44, controlling one of the first suction cup 54 and the other to inflate.

[0076] Through the above technical solution, the loading arm 41 and the unloading arm 51 are connected and integrally formed, resulting in high structural strength and reducing the use of control motors. When the loading arm 41 is in position c, the unloading arm 51 is in position a; when the loading arm 41 is in position d, the unloading arm 51 is in position b; the first cylinder 52 and the second cylinder 42 operate synchronously, controlling the first driven rod 53 and the second driven rod 43 to rise and fall synchronously.

[0077] State 1: When the loading arm 41 is in position c and the unloading arm 51 is in position a, the external cylinder inflates the second suction cup 44 and sucks air from the first suction cup 54.

[0078] State 2: When the loading arm 41 is in position d and the unloading arm 51 is in position b, the external cylinder draws air from the second suction cup 44 and inflates the first suction cup 54.

[0079] The gripping and lowering actions of the first suction cup 54 and the second suction cup 44 can be simultaneously controlled by a single external cylinder, reducing equipment costs, simplifying the control program, and improving the stability of the equipment during use.

[0080] As an improved specific implementation, the upper slot 71 is provided with an adjustment block 8 on the side facing the stamping mechanism 2, the adjustment block 8 is provided with an inclined pushing edge 81, the lower slot 61 is provided with an adjustment groove 611, and when the processing seat 6 and the clamping block 7 are closed, the adjustment block 8 is completely embedded in the adjustment groove 611.

[0081] Through the above technical solution, the magnet 121 causes the clamping block 7 to rotate and close with the processing seat 6. As the processing seat 6 moves forward, the clamping block 7 rotates, driving the adjusting block 8 to rotate. During the rotation of the adjusting block 8, the pushing edge 81 abuts against the opening of the muffler. As the adjusting block 8 rotates, the pushing edge 81 pushes the muffler to move to the bottom of the lower slot 61 (the first spring 652 and the second spring 752 are in a compressed state, and the friction between the muffler and the lower slot 61 is less than the restoring force of the first spring 652 + the connecting force). The friction between the receiving seat 64 and the movable seat 65, and the friction between the muffler and the lower slot 61 are less than the restoring force of the second spring 752 plus the friction between the sliding block 75 and the rotating block 74. Therefore, during the rotation, the muffler slides relative to the lower slot 61. At this time, there is no vertical downward pressure during the sliding, and the surface is free of scratches. This makes the bottom of the muffler abut against the bottom of the lower slot 61, providing stable support during the stamping process and preventing the muffler from sliding with the upper slot 71 and the lower slot 61 during the stamping process, thus avoiding scratches on the surface.

[0082] After the machining seat 6 and the clamping block 7 are closed, the adjusting block 8 is fully embedded in the adjusting groove 611.

[0083] Specifically, after the adjusting block 8 is embedded in the adjusting groove 611, the side of the adjusting block 8 and the arc surface of the lower slot 61 are on the same arc surface, which does not affect the stamping compression opening of the stamping rod 22, and is stable and reliable during use.

[0084] Specifically, each time the clamping block 7 is engaged with the processing seat 6 to fix the muffler, it passes through the adjusting block to prevent the muffler from being moved during the stamping process, thereby further improving the stability during use.

[0085] Specifically, the positions of the adjusting block 8 and the adjusting groove 611 are adjusted as the stamping depth increases, so that the muffler does not slip when it is in different stamping positions, thus avoiding scratches on the surface of the muffler.

[0086] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A multi-station necking machine for automotive air conditioning mufflers, comprising a frame (1) and a stamping mechanism (2) and a clamping mechanism (3) mounted on the frame (1), characterized in that: The frame (1) is provided with a conveyor belt (11), a feeding device (4) and a discharging device (5). The feeding device (4) and the discharging device (5) are both arranged adjacent to the conveyor belt (11). A linearly distributed processing area is provided on one side of the conveyor belt (11). The stamping mechanism (2) is positioned corresponding to the processing area. Processing seats (6) are spaced apart on the conveyor belt (11). The distance between adjacent processing seats (6) is equal, which is spacing A. The distance traveled by the conveyor belt (11) in one run is equal to the length of spacing A. A lower slot (61) is provided on the upper side of the processing seat (6). A clamping plate (12) is provided on the frame (1). A clamping block (7) is provided on the lower side of the clamping plate (12). The clamping blocks (7) are spaced apart on the upper side of the processing area. The distance between adjacent clamping blocks (7) is equal, which is spacing B. An upper slot (71) is provided on the clamping block (7). The stamping mechanism (2) includes: A stamping base (21) is fixedly mounted on a frame (1). The stamping base (21) has a plurality of stamping holes (211), and the spacing between adjacent stamping holes (211) is equal, which is the spacing C. A stamping rod (22) is slidably disposed in a stamping hole (211). The number of stamping rods (22) corresponds one-to-one with the number of stamping holes (211). A stamping groove (221) is provided on the stamping rod (22). The stamping groove (221) gradually changes with the forward direction of the conveyor belt (11). The stamping groove (221) faces the processing area. A stamping cylinder (23) is fixedly mounted on the frame (1). The stamping cylinder (23) is connected to the stamping rod (22) and drives the stamping rod (22) to reciprocate.

2. The multi-station necking machine for automotive air conditioning mufflers according to claim 1, characterized in that: The clamping block (7) is rotatably mounted on the clamping plate (12). The clamping block (7) is provided with a first receiving groove (72) and a driven block (73). The processing seat (6) is provided with a driving block (62) and a second receiving groove (63). The driving block (62) is located at the upper end of the processing seat (6), is arc-shaped, and is located on one side of the forward direction of the processing seat (6). The second receiving groove (63) is located on the other side. The first receiving groove (72) matches the driving block (62). The second receiving groove (63) is misaligned with the lower slot (61). The position of the driven block (73) matches the second receiving groove (63). The upper and lower ends of the clamping block (7) are provided with an upper slot (71), a driven block (73), and a first receiving groove (72). The upper slot (71), the driven block (73), and the first receiving groove (72) at the upper and lower ends are symmetrical about the rotation axis of the clamping plate (12).

3. The multi-station necking machine for automotive air conditioning mufflers according to claim 2, characterized in that: The frame (1) is provided with an abutment seat (13), which is located below the clamping plate (12). The abutment seat (13) is located on the side of the processing seat (6) away from the stamping mechanism (2). The processing seat (6) includes a connecting seat (64) and a movable seat (65). The connecting seat (64) is connected to the conveyor belt (11), and the movable seat (65) is slidably connected to the connecting seat (64). The lower slot (61), the drive block (62), and the second The receiving slots (63) are all set on the movable seat (65). The movable seat (65) is provided with a first reset slot (651). A first spring (652) is provided in the first reset slot (651). One end of the first spring (652) abuts against the first reset slot (651), and the other end abuts against the connecting seat (64). The connecting seat (64) is provided with a first notch (641) on the side near the abutting seat (13). The movable seat (65) is provided with a first abutting part (…). 653), the position of the first contact part (653) corresponds to the first notch (641); the clamping block (7) includes a rotating block (74) and a sliding block (75), the rotating block (74) is rotatably disposed on the clamping plate (12), the sliding block (75) is slidably disposed on the rotating block (74), the upper slot (71), the driven block (73), and the first receiving slot (72) are disposed on the sliding block (75), and the sliding block (75) is provided with a first notch (641). The second reset groove (751) is provided with a second spring (752). One end of the second spring (752) abuts against the second reset groove (751), and the other end abuts against the rotating block (74). The rotating block (74) is provided with a second notch (741) on the side near the abutment seat (13). The sliding block (75) is provided with a second abutment part (753), and the position of the second abutment part (753) corresponds to the second notch (741).

4. The multi-station necking machine for automotive air conditioning mufflers according to claim 3, characterized in that: The movable seat (65) has a first limiting notch (654) at one end facing the stamping mechanism (2), and the area between the two first limiting notches (654) is a first driven part (655). The first driven part (655) protrudes from the connecting seat (64). The connecting seat (64) has a first limiting protrusion (642) at one end facing the stamping mechanism (2). The first limiting protrusion (642) is located within the first limiting notch (654). The sliding block (75) has a second limiting notch (754) at one end facing the stamping mechanism (2), and the area between the two second limiting notches (754) is a second driven part (755). The second driven part (755) protrudes from the rotating block (74). The rotating block (74) has a second limiting protrusion (742) at one end facing the stamping mechanism (2). The second limiting protrusion (742) is located within the second limiting notch (754).

5. The multi-station necking machine for automotive air conditioning mufflers according to claim 1, characterized in that: The clamping plate (12) is provided with magnets (121), and there are several magnets (121). The position of the magnets (121) corresponds to the position of the clamping block (7).

6. The multi-station necking machine for automotive air conditioning mufflers according to claim 1, characterized in that: The feeding device (5) includes: The unloading arm (51) is rotatably mounted on the frame (1); A first cylinder (52) is mounted on the unloading arm (51), and the first cylinder (52) has a first driven rod (53); The first suction cup (54) is located at the lower end of the first driven rod (53) and is connected to an external cylinder.

7. The multi-station necking machine for automotive air conditioning mufflers according to claim 1 or 6, characterized in that: The feeding device (4) includes: The loading arm (41) is rotatably mounted on the frame (1); The second cylinder (42) is mounted on the loading arm (41), and the second cylinder (42) has a second driven rod (43); The second suction cup (44) is located at the lower end of the second driven rod (43) and is connected to the external cylinder.

8. The multi-station necking machine for automotive air conditioning mufflers according to claim 7, characterized in that: The loading arm (41) and unloading arm (51) are connected and integrally formed. The external cylinder is simultaneously connected to the first suction cup (54) and the second suction cup (44), controlling one of the first suction cup (54) and the other of the second suction cup (44) to suck air and the other to inflate air.

9. The multi-station necking machine for automotive air conditioning mufflers according to claim 2, characterized in that: The upper slot (71) is provided with an adjustment block (8) on the side facing the stamping mechanism (2). The adjustment block (8) is provided with an inclined pushing edge (81). The lower slot (61) is provided with an adjustment groove (611). When the processing seat (6) and the clamping block (7) are closed, the adjustment block (8) is completely embedded in the adjustment groove (611).

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