A kind of automobile exhaust pipe lug die flash removal mechanism

Abstract

The present application belongs to the technical field of rubber lug production equipment, and discloses a lug die deburring mechanism for an automobile exhaust pipe, which comprises a middle die plate for vulcanization forming a lug; further comprises a first lifting seat and a second lifting seat; a sliding groove is formed on each of the first lifting seat and the second lifting seat; a demolding top plate is fixedly arranged below the first lifting seat; and a demolding top block is arranged on the demolding top plate corresponding to each product cavity. The second lifting seat for bearing a vulcanization station is fixedly arranged, the first lifting seat demolding deburring station is liftable, synchronous gears at both ends of the sliding groove are driven by a motor, and the middle die plate after vulcanization is automatically transferred from a forming station to a deburring station by engaging transmission with the rack on both sides of the middle die plate. The whole vulcanization, transfer, demolding and fly cutting process is continuously completed on line, which not only saves the process of manually transferring the product to the deburring station and the independent station for manually cutting the fly edge, but also shortens the single production cycle and improves the batch production efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of rubber lug production equipment, specifically relating to a deflashing mechanism for a lug mold of an automobile exhaust pipe. Background Technology

[0002] The exhaust pipe is an important component of the vehicle's exhaust system, used to transport the high-temperature exhaust gas produced by the engine. The exhaust pipe assembly is usually flexibly suspended from the chassis by rubber hangers. The rubber hangers bear the load and rely on their own elasticity to isolate vibration, restrain excessive displacement of the exhaust pipe caused by driving bumps, reduce resonance noise, and prevent pipe damage due to stress. Conventional rubber hangers are mostly one-piece ring or waist-shaped rubber block structures with mounting holes at both ends, relying on the rubber hangers to achieve load bearing, vibration isolation, and displacement restraint.

[0003] Existing rubber lugs are generally manufactured using vulcanization molding processes, such as... Figure 1 As shown, the molding die consists of a runner plate, an upper template, a middle template, and a lower template arranged sequentially from top to bottom. During processing and production, the four templates are assembled into one piece, and then the rubber raw material is injected into the product cavity formed after the mold is closed through the injection hole in the center of the upper surface of the runner plate. After the rubber is vulcanized and formed, the initial processing of the rubber lug is completed by demolding.

[0004] This molding process has certain defects, such as Figure 2 As shown, because the product cavity and the runner cavity are interconnected, flash is easily generated at the junction of the runner cavity and the cavity after vulcanization molding. Figure 2 The image shows the flash structure under optimal forming conditions (irregularly shaped flash may occur during actual production). Currently, flash is typically removed manually after the product has cooled to meet usage requirements. However, this flash removal process is cumbersome and has low production efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a flash removal mechanism for a car exhaust pipe hanger mold, which solves the technical problem in the prior art where, after the rubber hanger is vulcanized and demolded, the product and flash remain connected, requiring manual removal of the flash, resulting in cumbersome processing and low production efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A deflashing mechanism for a lifting lug mold of an automobile exhaust pipe includes a middle template for vulcanizing the lifting lug; it also includes a first lifting seat and a second lifting seat; both the first lifting seat and the second lifting seat are provided with sliding grooves; a demolding top plate is fixedly provided below the first lifting seat; a demolding top block is provided on the demolding top plate corresponding to each product cavity; Both ends of the two first lifting seats are fixedly equipped with third telescopic cylinders; the output ends of the third telescopic cylinders at the same end are connected to a horizontal plate; a connecting rod is fixedly connected to the horizontal plate at the position corresponding to the middle of each product cavity; a knife holder is connected to the lower end of the connecting rod; a knife slot is provided at the position corresponding to each product cavity of the knife holder; a cutting knife is installed in the knife slot, which is composed of a cutting knife fixing part and a cutting edge, wherein the shape of the cutting knife fixing part and the cutting edge matches the shape of the rubber lifting lug.

[0007] Furthermore, gears are rotatably connected inside the first and second lifting seats at both ends of the slide groove; motors are fixed on the first and second lifting seats, and the motors independently drive the corresponding gears to rotate; racks are provided on both sides of the middle template.

[0008] Furthermore, a second telescopic cylinder with an output end connected to the first lifting seat is provided in the middle of the lower part of the first lifting seat; a first support leg is fixedly provided on both sides of the first lifting seat corresponding to the second telescopic cylinder; a guide rod is fixedly connected to the upper end of the first support leg, and the guide rod is slidably engaged with the first lifting seat; wherein, the second telescopic cylinder drives the first lifting seat to move downward, causing the first lifting seat carrying the middle template to be demolded to move closer to the demolding top block, until the demolding top block extends into the product cavity from the bottom of the middle template.

[0009] Furthermore, the tool holder has a limiting groove corresponding to the periphery of the tool groove; a limiting block is rotatably connected in the limiting groove, the lower end of the limiting block has a ridge to prevent the limiting block from axially falling out of the limiting groove, and the upper end is T-shaped; the cutting blade fixing part has a slot corresponding to the limiting groove, and the slot fits with the upper end of the limiting block.

[0010] Furthermore, a common connecting plate is fixedly connected to the middle of the connecting rod; an insert rod is fixedly provided on the lower surface of the common connecting plate at the position of the product mounting hole inside the product cavity.

[0011] Furthermore, the third telescopic cylinder drives the common plate to move downward, and the insertion rod moves downward synchronously; when the demolded product is ejected to the top of the product cavity, the insertion rod is inserted into the product's mounting hole.

[0012] Furthermore, a pressure plate is slidably connected to the connecting rod between the common connecting plate and the tool holder, and the pressure plate is slidably engaged with the insertion rod; a sleeve is fixedly connected to the pressure plate at the position corresponding to the insertion rod, and the sleeve is slidably sleeved with the insertion rod; a first telescopic cylinder symmetrically arranged is fixedly provided on the upper surface of the common connecting plate, and its output end passes through the common connecting plate and is fixedly connected to the pressure plate.

[0013] Furthermore, the third telescopic cylinder drives the common plate to move upward as a whole, causing the insertion rod to disengage from the middle template area. The first telescopic cylinder drives the pressure plate to move downward. The pressure plate applies force to the cut product through the sleeve, forcing the product to move downward along the insertion rod until it falls off.

[0014] Furthermore, the third telescopic cylinder drives the cutting blade downwards via the horizontal plate and connecting rod, bringing it closer to the rubber lug to be demolded; subsequently, as the demolding top block pushes the rubber lug out to the upper part of the product cavity, the rubber lug comes into contact with the blade; when the demolding top block reaches the lower stop point, the rubber lug and the flash are completely cut off and separated by the blade.

[0015] Furthermore, the operating steps of the deflash removal mechanism for the lifting lug mold are as follows: S100: In the initial state of the equipment, the slide groove of the first lifting seat and the slide groove of the second lifting seat are precisely aligned and flush. The middle template is positioned and placed at the vulcanization molding station corresponding to the second lifting seat. The flow channel plate, upper template, lower template and middle template are controlled to close the mold. The rubber lifting lug is vulcanized and molded with the help of the mold matching heating and pressurization system. The mold is opened after the product is vulcanized and molded. S200: Start the motors on the first and second lifting seats. The motors drive the gears at the end of the slide to rotate synchronously. The gears mesh with the racks on both sides of the middle template to drive the middle template carrying the molded product from the vulcanization molding station of the second lifting seat to the demolding and deflash removal station corresponding to the first lifting seat. After the template is moved into place, the motor stops and the gears lock to fix the middle template. S300: Start the second telescopic cylinder. The second telescopic cylinder drives the first lifting seat to move downward as a whole. The first lifting seat achieves vertical guidance through the sliding cooperation of the guide rod and the first support leg, which drives the middle template to move closer to the demolding top plate, so that the demolding top block on the demolding top plate extends from the bottom of the middle template into each group of product cavities, completing the pre-demolding alignment. S400: Activate the third telescopic cylinders at both ends of the first lifting seat. The third telescopic cylinders on the same side synchronously drive the horizontal plate and connecting rod to move downward, which in turn drives the common connecting plate in the middle of the connecting rod and the lower end tool holder to move downward synchronously. The insertion rod at the bottom of the common connecting plate aligns with the mounting hole of the rubber lifting lug inside the product cavity and moves downward synchronously, thus completing the product positioning limit in advance. S500: The second telescopic cylinder continuously drives the first lifting seat downwards, and the demolding top block pushes the rubber lifting lugs in the cavity upwards; when the product is not out of the cavity, its posture is constrained by the cavity wall; after the product is out of the cavity, the insert rod is inserted into the mounting hole for limitation, and the outer wall of the lifting lugs fits against the blade of the contour cutting knife in the slit; when the first lifting seat descends to the lower stop point and the demolding top block completely pushes out the product, the blade cuts off the flash of the product and the runner, realizing the separation of the flash from the finished product; S600: The third telescopic cylinder first drives the common connecting plate and the insert rod to move upward as a whole, so that the insert rod and the finished product are completely separated from the cavity area of ​​the middle template; then the first telescopic cylinder is activated, and the first telescopic cylinder drives the pressure plate to slide downward along the connecting rod and the insert rod. The sleeve on the pressure plate slides along the insert rod and presses down the finished product, pushing the rubber lifting lug off the insert rod to the surface of the middle template, thus completing the unloading. S700: After unloading, the operator uses clamps to collect the finished product and flash waste on the template and store them in categories. S800: After cleaning, the second telescopic cylinder is reset and drives the first lifting seat to rise vertically, so that the first lifting seat slide groove and the second lifting seat slide groove are realigned; the motor is started again, and the unloaded middle template is moved back to the second lifting seat vulcanization molding station by means of gear and rack transmission, and the flow plate, upper template, lower template and middle template are closed, and the next round of vulcanization, demolding and flash removal production cycle begins.

[0016] The beneficial effects of this invention are: 1. This invention uses a fixed second lifting seat to support the vulcanization station and a liftable first lifting seat to remove flash from the mold. The synchronous gears at both ends of the sliding groove driven by the motor mesh with the racks on both sides of the middle mold plate to automatically transfer the vulcanized middle mold plate from the forming station to the flash removal station. The entire vulcanization, transfer, demolding, and flash removal process is completed online continuously, which not only eliminates the process of manually transferring products to the flash removal station, but also eliminates the need for a separate station for manually cutting flash, shortening the production cycle of a single piece and improving the efficiency of batch production.

[0017] 2. This invention uses a third telescopic cylinder to drive the common plate downwards synchronously, with the insertion rod pre-aligned with the product mounting hole; the second telescopic cylinder drives the first lifting seat to descend, and the demolding top block ejects the rubber lifting lug from the bottom. When the product is not yet removed from the cavity, it is limited by the inner wall of the cavity. After removing from the cavity, the insertion rod is inserted into the mounting hole to lock the lifting lug's posture, preventing the rubber part from being ejected at an angle; at the same time, a cutting blade that matches the shape of the lifting lug is installed in the blade holder. During the ejection to the lower stop point, the blade simultaneously cuts the connection between the product and the runner flash. The double limiting and the contour cutting blade completely avoid defects such as cutting deviation, product damage, and flash residue, improving the finished product qualification rate.

[0018] 3. In this invention, a pressure plate is slidably mounted on the connecting rod. A sleeve is provided on the pressure plate to engage with the insert rod. First telescopic cylinders are symmetrically arranged above the connecting plate. After the process is completed, the third telescopic cylinder first moves the insert rod and the finished product upwards, detaching them from the middle template. Then, the first telescopic cylinder drives the pressure plate to slide downwards along the insert rod, and the sleeve simultaneously presses down on the finished product, forcibly pushing the lifting lug from the insert rod onto the surface of the middle template. This eliminates the need for manual removal of products one by one, eliminates material jamming, and ensures uninterrupted cyclical production. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the lifting lug production mold after mold closing in the existing technology; Figure 2 This is a schematic diagram of the structure of the hanging lug after vulcanization molding in this invention; Figure 3 This is a schematic diagram of the template structure in this invention; Figure 4 This is a schematic diagram of the overall structure of the present invention; Figure 5 This is a top view of the present invention; Figure 6 yes Figure 5 Cross-sectional view at point AA; Figure 7 This is a schematic diagram of the overall structure of the first lifting seat when it descends in this invention; Figure 8 This is a schematic diagram of the overall structure of the first lifting seat when it moves upward in this invention; Figure 9 This is a front view of the present invention; Figure 10 yes Figure 9 Cross-sectional view at point BB; Figure 11 This is a schematic diagram of the structure of the common connection plate of the present invention; Figure 12 This is a schematic diagram of the demolding top plate in this invention; Figure 13 This is an exploded view of the connecting plate, pressure plate, and knife holder of the present invention; Figure 14 This is an exploded view of the tool holder and cutting blade in this invention.

[0020] In the picture: 100. Runner plate; 200. Upper template; 300. Middle template; 400. Lower template; 310. Cavity; 320. Runner cavity; 330. Gear rack; 1. First lifting seat; 2. Second lifting seat; 3. Common connecting plate; 4. Connecting rod; 5. Knife holder; 6. Knife groove; 7. Cutting knife fixing part; 8. Knife blade; 9. Limiting groove; 10. Limiting block; 11. Slot; 12. Insert rod; 13. Pressure plate; 14. Sleeve; 15. First telescopic cylinder; 16. Demolding top plate; 17. Demolding top block; 18. Slide groove; 19. Gear; 20. Motor; 21. First support leg; 22. Guide rod; 23. Second telescopic cylinder; 24. Second support leg; 25. Third telescopic cylinder; 26. Horizontal plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 3 , Figure 4 , Figure 5 as well as Figure 10As shown, a deflashing mechanism for a car exhaust pipe lifting lug mold includes a vertically movable first lifting seat 1 and a fixedly mounted second lifting seat 2. The second lifting seat 2 is fixed to the side of the first lifting seat 1 via a second support leg 24 at its bottom. Both the first lifting seat 1 and the second lifting seat 2 have sliding grooves 18, with gears 19 rotatably connected at both ends of the grooves 18. A motor 20 is fixedly mounted on both the first lifting seat 1 and the second lifting seat 2, and the motor 20 independently drives the corresponding gear 19 to rotate. It should be noted that the gears 19 on the same side of the same lifting seat must start and stop synchronously. A rack 330 is provided on both sides of the middle template 300. When the middle template 300 slides into the sliding groove 18 of the first lifting seat 1 or the second lifting seat 2, the rack 330 automatically meshes with the gear 19, and the motor 20 drives the gear 19, thereby causing the middle template 300 to move along the sliding groove 18.

[0023] Please refer to it again. Figure 2 and Figure 3 As shown, the middle template 300 has four sets of product cavities 310, each set of product cavities 310 can form eight products. The product cavities 310 are connected to the flow channel cavity 320. This part belongs to the prior art and will not be described in detail here.

[0024] Please refer to it again. Figure 4 , Figure 8 as well as Figure 12 As shown, the first lifting seat 1 corresponds to the demolding and deflashing station, and the second lifting seat 2 corresponds to the vulcanization molding station. A demolding top plate 16 is fixedly connected to the first lifting seat 1 via a support column. A demolding top block 17 is provided on the demolding top plate 16 corresponding to each product cavity 310, and the upper end of the demolding top block 17 is lower than the height of the second lifting seat 2. A second telescopic cylinder 23 is provided in the middle of the lower part of the first lifting seat 1, and the output end of the second telescopic cylinder 23 is fixedly connected to the first lifting seat 1. First support legs 21 are fixedly provided on both sides of the first lifting seat 1 corresponding to the second telescopic cylinder 23. A guide rod 22 is fixedly connected to the upper end of the first support leg 21, and the guide rod 22 slides with the first lifting seat 1. During operation, the second telescopic cylinder 23 drives the first lifting seat 1 downwards, causing the first lifting seat 1, which carries the middle mold plate 300 to be demolded, to move closer to the demolding top block 17 until the demolding top block 17 extends from the bottom of the middle mold plate 300 into the product cavity 310. At this time, the demolding ejector block 17 ejects the molded products in each product cavity 310 to the top of the cavity 310, completing the demolding process.

[0025] Please refer to it again. Figure 6 , Figure 7 , Figure 11 as well as Figure 13As shown, in order to remove the burrs adhering to the molded product, a third telescopic cylinder 25 is fixedly installed at both ends of the two first lifting seats 1; the output ends of the third telescopic cylinders 25 at the same end are connected to a horizontal plate 26 spanning the two first lifting seats 1; a connecting rod 4 is fixedly connected to the horizontal plate 26 at the position corresponding to the middle of each product cavity 310; a knife holder 5 is connected to the lower end of the connecting rod 4; a knife groove 6 is provided at the position corresponding to each product cavity 310 of the knife holder 5; a cutting knife is installed in the knife groove 6, which is composed of a cutting knife fixing part 7 and a cutting edge 8, wherein the shape of the cutting knife fixing part 7 and the cutting edge 8 matches the shape of the rubber lug. During operation, the third telescopic cylinder 25 drives the cutting blade downward via the horizontal plate 26 and the connecting rod 4, bringing it closer to the rubber lug to be demolded; then, as the demolding top block 17 pushes the rubber lug out to the upper part of the product cavity 310, the rubber lug comes into contact with the blade 8; when the demolding top block 17 reaches the lower stop point, the rubber lug and the flash are completely cut off and separated by the blade 8.

[0026] Please refer to it again. Figure 14 As shown, the cutter holder 5 has a limiting groove 9 at the periphery of the cutter groove 6; a limiting block 10 is rotatably connected within the limiting groove 9. The lower end of the limiting block 10 has a ridge to prevent it from axially falling out of the limiting groove 9, and the upper end is T-shaped. The cutting blade fixing part 7 has a slot 11 corresponding to the limiting groove 9, which fits with the upper end of the limiting block 10. In use, first rotate the upper end of the limiting block 10 to align with the slot 11, then place the cutting blade 8 in the cutter groove 6, and then rotate the limiting block 10 to offset the T-shaped structure of the upper part of the limiting block 10 from the slot 11, thus fixing the cutting blade to the cutter holder 5. It is simple and convenient to use.

[0027] Please refer to it again. Figure 9 , Figure 11 , Figure 13 As shown, to prevent the rubber lifting lugs from skewing during the ejection of the demolding block 17, which could cause the cutting edge 8 to cut off, a common connecting plate 3 is fixedly connected to the middle of the connecting rod 4. A rod 12 is fixedly installed on the lower surface of the common connecting plate 3 at the position corresponding to the product mounting hole in the product cavity 310. During the downward movement of the common connecting plate 3 driven by the third telescopic cylinder 25, the rod 12 moves downward synchronously; when the demolded product is ejected above the product cavity 310, the rod 12 precisely inserts into the product's mounting hole, thereby constraining the product's ejection posture and preventing the cutting edge 8 from cutting off. It is worth noting that before the product completely detaches from the product cavity 310, its posture is constrained by the cavity 310 wall; after detaching from the cavity 310, it is constrained by the rod 12, thus ensuring the accuracy of the separation between the product and the flash.

[0028] Please refer to it again. Figure 9 , Figure 11 as well as Figure 13As shown, since both the product and the flash are made of rubber, there is significant frictional resistance between them and the insertion rod 12 after separation, causing the product to be unable to fall off under its own weight when the insertion rod 12 moves upward. Therefore, a pressure plate 13 is slidably connected between the connecting rod 4, the common plate 3, and the cutter holder 5. The pressure plate 13 is slidably engaged with the insertion rod 12. A sleeve 14 is fixedly connected to the pressure plate 13 at the position corresponding to the insertion rod 12, and the sleeve 14 is slidably sleeved with the insertion rod 12. A symmetrically arranged first telescopic cylinder 15 is fixedly mounted on the upper surface of the common plate 3, with its output end penetrating the common plate 3 and fixedly connected to the pressure plate 13. The operating logic is as follows: First, the third telescopic cylinder 25 drives the common plate 3 to move upward as a whole, causing the insertion rod 12 to detach from the middle template 300 area, reserving space for the product to fall off; then, the first telescopic cylinder 15 drives the pressure plate 13 downward, and the pressure plate 13 applies force to the cut product through the sleeve 14, forcing the product to move downward along the insertion rod 12 until it falls off. At this point, the product demolding and flash removal processes are complete. Operators can use clamps to clean and collect the products and flash scattered on the middle mold plate 300.

[0029] Please refer to it again. Figure 8 As shown, after the above process is completed, in order to enter the next vulcanization molding cycle, the second telescopic cylinder 23 drives the first lifting seat 1 to move upward until its slide groove 18 is aligned with the slide groove 18 of the second lifting seat 2. The start motor 20 drives the gear 19 to rotate, and the gear 19 and rack 330 drive the middle mold plate 300 to be moved and reset to the second lifting seat 2. After the flow channel plate 100, the upper mold plate 200 and the lower mold plate 400 are closed with the middle mold plate 300, the next production cycle can begin.

[0030] Based on the above-described mechanism for removing flash from lifting lug molds, the following steps are involved: S100: In the initial state of the equipment, the slide groove 18 of the first lifting seat 1 and the slide groove 18 of the second lifting seat 2 are precisely aligned and flush. The middle template 300 is positioned at the vulcanization molding station of the second lifting seat 2. The control flow plate 100, upper template 200, lower template 400 and middle template 300 complete the mold closing operation. The vulcanization molding process of the rubber lifting lug is completed through the mold matching heating and pressurization system. After the product is vulcanized, the mold is opened.

[0031] S200: Start the drive motors 20 on the first lifting seat 1 and the second lifting seat 2. The motors 20 drive the corresponding end gears 19 to rotate synchronously. Through the meshing transmission between the gears 19 and the racks 330 on both sides of the middle template 300, the middle template 300 carrying the molded rubber lifting lug product is smoothly moved from the vulcanization molding station of the second lifting seat 2 to the demolding and deflash removal station of the first lifting seat 1. After the transfer is completed, the motors 20 stop, the gears 19 lock, and the position of the middle template 300 is fixed.

[0032] S300: Activate the second telescopic cylinder 23 below the first lifting seat 1. The second telescopic cylinder 23 drives the first lifting seat 1 to descend as a whole, causing the station structure carrying the middle template 300 to move closer to the demolding top plate 16 below. During operation, the first lifting seat 1 achieves vertical and precise guidance through the sliding cooperation of the guide rod 22 and the first lifting seat 1, avoiding displacement and ensuring that the demolding top block 17 on the demolding top plate 16 can accurately extend from the bottom of the middle template 300 into the interior of each group of product cavities 310, completing the pre-demolding alignment.

[0033] S400: Activate the third telescopic cylinders 25 at both ends of the first lifting seat 1. The two sets of third telescopic cylinders 25 at the same end synchronously drive the horizontal plate 26 and connecting rod 4 downwards as a whole, causing the common connecting plate 3 in the middle of the connecting rod 4 and the bottom knife holder 5 to move downwards synchronously. During the downward movement, the insertion rod 12 on the lower surface of the common connecting plate 3 precisely aligns with the product mounting hole position of the product cavity 310 of the middle template 300 and moves downwards synchronously, preparing for the subsequent product ejection and avoiding product skew and misalignment during edge cutting.

[0034] S500: The second telescopic cylinder 23 continuously drives the first lifting seat 1 downwards, and the demolding top block 17 gradually lifts the rubber lugs inside the product cavity 310, pushing the molded product upwards out of the cavity 310. During the product ejection process, the outline of the lugs precisely fits and contacts the cutting blade 8 in the cutting groove 6 of the cutter holder 5. The fitting shape between the cutting blade and the rubber lugs ensures cutting accuracy. When the first lifting seat 1 descends to the lower stop point and the demolding top block 17 completes the complete ejection of the product, the cutting blade 8 completely severs the connection structure between the product and the runner flash, achieving precise separation of the product and the flash.

[0035] When the product is still in the cavity 310, its posture is constrained by the wall of the cavity 310; after the product leaves the cavity 310, its posture is fixed by the insertion rod 12 throughout the process to avoid problems such as ejection offset, uneven cutting edge, and product scrap.

[0036] S600: First, the third telescopic cylinder 25 drives the common connecting plate 3 and the insert rod 12 to move upward as a whole, so that the insert rod 12 and the finished product are completely separated from the cavity 310 area of ​​the middle template 300, leaving space for unloading; then the first telescopic cylinder 15 drives the pressure plate 13 to move downward along the connecting rod 4 and the insert rod 12, and applies pressure by sliding against the insert rod 12 through the sleeve 14, pushing the finished product on the insert rod 12 to move downward until the finished product is completely separated from the insert rod 12 and scattered on the surface of the middle template 300, completing the automated unloading.

[0037] S700: After the unloading process is completed, the operators use clamps to collect and clean up the qualified finished products and the separated flash waste scattered on the middle template 300, classify and store them, and complete the post-processing operation of a single batch of products.

[0038] S800: After the waste and finished products are cleaned up, the second telescopic cylinder 23 resets, driving the first lifting seat 1 to move vertically upward until the sliding groove 18 of the first lifting seat 1 and the sliding groove 18 of the second lifting seat 2 are aligned again. The drive motor 20 is restarted, and through the gear 19 and rack 330 transmission structure, the empty material middle mold 300 is driven to move in the opposite direction and reset to the vulcanization molding station of the second lifting seat 2. Finally, the mold closing operation of the upper mold 200, lower mold 400, runner plate 100 and middle mold 300 is completed, the equipment is reset and ready to start the vulcanization molding, demolding and deflash removal production cycle of the next batch of products.

[0039] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A deflashing mechanism for a lifting lug mold of an automobile exhaust pipe, comprising a middle template (300) for vulcanizing the lifting lug; characterized in that: It also includes a first lifting seat (1) and a second lifting seat (2); both the first lifting seat (1) and the second lifting seat (2) are provided with a sliding groove (18); a demolding top plate (16) is fixedly provided below the first lifting seat (1); a demolding top block (17) is provided on the demolding top plate (16) corresponding to each product cavity (310); Both ends of the two first lifting seats (1) are fixedly provided with third telescopic cylinders (25); the output ends of the third telescopic cylinders (25) at the same end are connected to a horizontal plate (26); the horizontal plate (26) is fixedly connected to a connecting rod (4) at the position corresponding to the middle of each product cavity (310); the lower end of the connecting rod (4) is connected to a knife holder (5); the knife holder (5) is provided with a knife groove (6) corresponding to the position of each product cavity (310); a cutting knife is installed in the knife groove (6), which is composed of a cutting knife fixing part (7) and a blade (8), wherein the shape of the cutting knife fixing part (7) and the blade (8) matches the shape of the rubber lug.

2. The deflash removal mechanism for a car exhaust pipe lifting lug mold according to claim 1, characterized in that: The first lifting seat (1) and the second lifting seat (2) are rotatably connected to gears (19) at both ends of the slide groove (18); motors (20) are fixed on the first lifting seat (1) and the second lifting seat (2), and the motors (20) independently drive the corresponding gears (19) to rotate; racks (330) are provided on both sides of the middle template (300).

3. The deflash removal mechanism for a car exhaust pipe lifting lug mold according to claim 1, characterized in that: The first lifting seat (1) is provided with a second telescopic cylinder (23) with its output end connected to the first lifting seat (1) in the middle of its lower part; the first lifting seat (1) is provided with a first support leg (21) on both sides corresponding to the second telescopic cylinder (23); the upper end of the first support leg (21) is fixedly connected with a guide rod (22), and the guide rod (22) slides with the first lifting seat (1); The second telescopic cylinder (23) drives the first lifting seat (1) to move downward, causing the first lifting seat (1) carrying the middle template (300) to be demolded to move closer to the demolding top block (17) until the demolding top block (17) extends from the bottom of the middle template (300) into the product cavity (310).

4. The deflash removal mechanism for a car exhaust pipe lifting lug mold according to claim 1, characterized in that: The blade holder (5) has a limiting groove (9) at the periphery of the blade groove (6); a limiting block (10) is rotatably connected in the limiting groove (9). The lower end of the limiting block (10) is provided with a ridge to prevent the limiting block (10) from axially falling out of the limiting groove (9), and the upper end is T-shaped; the cutting blade fixing part (7) has a slot (11) that corresponds to the limiting groove (9), and the slot (11) fits with the upper end of the limiting block (10).

5. The deflash removal mechanism for a car exhaust pipe lifting lug mold according to claim 1, characterized in that: A common connecting plate (3) is fixedly connected to the middle of the connecting rod (4); a plug rod (12) is fixedly provided on the lower surface of the common connecting plate (3) at the position of the product mounting hole in the product cavity (310).

6. The deflash removal mechanism for a car exhaust pipe lifting lug mold according to claim 1, characterized in that: The third telescopic cylinder (25) drives the common plate (3) and the insert rod (12) to move downwards synchronously; when the demolded product is ejected above the product cavity (310), the insert rod (12) is inserted into the product's mounting hole.

7. The deflash removal mechanism for a car exhaust pipe lifting lug mold according to claim 1, characterized in that: On the connecting rod (4), a pressure plate (13) is slidably connected between the common connecting plate (3) and the knife holder (5), and the pressure plate (13) is slidably engaged with the insertion rod (12); a sleeve (14) is fixedly connected to the pressure plate (13) at the position corresponding to the insertion rod (12), and the sleeve (14) is slidably sleeved with the insertion rod (12); a first telescopic cylinder (15) is fixedly provided on the upper surface of the common connecting plate (3), and its output end passes through the common connecting plate (3) and is fixedly connected to the pressure plate (13).

8. The deflash removal mechanism for a car exhaust pipe lifting lug mold according to claim 7, characterized in that: The third telescopic cylinder (25) drives the common plate (3) to move upward as a whole, so that the insertion rod (12) is separated from the middle template (300) area. The first telescopic cylinder (15) drives the pressure plate (13) to move downward, and in conjunction with the sleeve (14), applies force to the cut product, forcing the product to move downward along the insertion rod (12) until it falls off.

9. The deflash removal mechanism for a car exhaust pipe lifting lug mold according to claim 1, characterized in that: The third telescopic cylinder (25) drives the cutting blade downward via the horizontal plate (26) and connecting rod (4) to approach the rubber lug to be demolded; then, during the process of the demolding top block (17) pushing the rubber lug to the upper part of the product cavity (310), the rubber lug comes into contact with the blade (8); when the demolding top block (17) reaches the lower stop point, the rubber lug and the flash are completely cut off and separated by the blade (8).

10. A flash removal mechanism for a lifting lug mold of an automobile exhaust pipe according to any one of claims 1-9, characterized in that: The operating steps for the deflash removal mechanism of the lifting lug mold are as follows: S100: In the initial state of the equipment, the slide groove (18) of the first lifting seat (1) and the slide groove (18) of the second lifting seat (2) are precisely aligned and flush. The middle template (300) is positioned and placed at the vulcanization molding station corresponding to the second lifting seat (2). The flow channel plate (100), the upper template (200), the lower template (400) and the middle template (300) are closed. The rubber lifting lug is vulcanized and molded with the help of the mold matching heating and pressurization system. The mold is opened after the product is vulcanized and molded. S200: Start the motors (20) on the first lifting seat (1) and the second lifting seat (2). The motors (20) drive the gears (19) at the end of the slide (18) to rotate synchronously. The gears (19) mesh with the racks (330) on both sides of the middle template (300) to drive the middle template (300) carrying the molded product from the vulcanization molding station of the second lifting seat (2) to the demolding and deflash removal station corresponding to the first lifting seat (1). After the middle template (300) is moved into place, the motor (20) stops and the gears (19) lock to fix the middle template (300). S300: Start the second telescopic cylinder (23). The second telescopic cylinder (23) drives the first lifting seat (1) to move downward as a whole. The first lifting seat (1) slides with the first support leg (21) through the guide rod (22) to achieve vertical guidance, which drives the middle template (300) to move closer to the demolding top plate (16), so that the demolding top block (17) on the demolding top plate (16) extends from the bottom of the middle template (300) into each group of product cavities (310) to complete the pre-demolding alignment. S400: Start the third telescopic cylinders (25) at both ends of the first lifting seat (1). The third telescopic cylinder (25) on the same side synchronously drives the horizontal plate (26) and connecting rod (4) to move downward, driving the common connecting plate (3) in the middle of the connecting rod (4) and the lower end knife holder (5) to move downward synchronously. The insertion rod (12) at the bottom of the common connecting plate (3) is aligned with the mounting hole of the rubber lifting lug inside the product cavity (310) and moves downward synchronously, thus completing the product positioning limit in advance. S500: The second telescopic cylinder (23) continuously drives the first lifting seat (1) downward, and the demolding top block (17) pushes the rubber lugs in the cavity (310) upward; when the product is not removed from the cavity (310), its posture is constrained by the cavity (310) wall. After the product is removed from the cavity (310), the insert rod (12) is inserted into the product mounting hole for limitation. The outer wall of the lugs fits against the blade (8) of the contour cutting knife in the knife groove (6); when the first lifting seat (1) moves down to the lower stop point and the demolding top block (17) completely pushes out the product, the blade (8) cuts off the flash of the product and the runner, realizing the separation of the flash from the finished product; S600: The third telescopic cylinder (25) first drives the common connecting plate (3) and the insert rod (12) to move upward as a whole, so that the insert rod (12) and the finished product are completely separated from the cavity (310) area of ​​the middle template (300); then the first telescopic cylinder (15) is started, and the first telescopic cylinder (15) drives the pressure plate (13) to slide downward along the connecting rod (4) and the insert rod (12). The sleeve (14) on the pressure plate (13) slides along the insert rod (12) and presses down the finished product, pushing the rubber lifting lug from the insert rod (12) to the surface of the middle template (300) to complete the unloading; S700: After unloading, the operator uses a clamp to collect the finished product and flash waste on the template (300) and store them in categories; S800: After cleaning, the second telescopic cylinder (23) is reset and drives the first lifting seat (1) to rise vertically, so that the slide groove (18) of the first lifting seat (1) and the slide groove (18) of the second lifting seat (2) are re-aligned; the motor (20) is started again, and the empty middle template (300) is moved back to the vulcanization molding station of the second lifting seat (2) by means of gear (19) and rack (330) transmission, and the flow channel plate (100), upper template (200), lower template (400) and middle template (300) are closed, and the next round of vulcanization, demolding and flash removal production cycle begins.

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