Automatic length cutting and end face trimming device for metal bar

Abstract

This invention relates to the field of metal bar cutting and processing, specifically disclosing an automatic fixed-length cutting and end-face trimming device for metal bars. This device solves the problems of existing automatic fixed-length cutting equipment for metal bars having limited functionality, low processing efficiency, and poor versatility and flexibility. The proposed solution includes a mounting platform, a mold, a guide rod, a slide block, a top plate, a telescopic component, an adjustment assembly, a billet storage tank, an upper base plate, a lower base plate, a material transfer assembly, an arc-shaped sleeve, and a linkage assembly. The billet storage tank is equipped with a linkage assembly for slidingly engaging with the top plate. The lower base plate is equipped with a trimming assembly for guiding the metal bar billet falling from the storage tank and grinding both ends. This device can perform high-precision fixed-length cutting of metal bars with flexible adjustable cutting length, and can automatically trim both ends of the cut metal bar billet, thus improving processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of metal bar cutting and processing, and in particular to an automatic fixed-length cutting and end-face trimming device for metal bars. Background Technology

[0002] The automatic fixed-length cutting and end-face finishing device for metal bars is an automated equipment integrating automatic feeding, fixed-length feeding, precision cutting, end-face deburring / chamfering / polishing, and automatic unloading. It is primarily used for high-precision, high-efficiency processing of metal bars (round bars, square bars, etc.) and is widely applied in the automotive, machinery, hardware, and electronics industries. It is especially useful for manufacturing components such as nails, shafts, and pins.

[0003] Automatic length-cutting devices for metal bars typically employ sawing or pressing techniques. Sawing is inefficient, while pressing results in bulges on the end face, both producing burrs at the edge. Furthermore, in existing equipment, regardless of the cutting method, after cutting the metal bar into billets, the billets are generally rolled off and collected for subsequent end-face trimming and other processing. This leads to an inconsistent processing flow and low efficiency. Additionally, it lacks the flexibility to adjust the cutting length and ensure cutting accuracy. Therefore, an automatic length-cutting and end-face trimming device for metal bars is proposed. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the present invention proposes an automatic fixed-length cutting and end-face trimming device for metal bars, which solves the problems of single function, low processing efficiency and poor versatility and flexibility of the existing automatic fixed-length cutting equipment for metal bars.

[0005] To solve the above-mentioned technical problems, the basic technical solution proposed by this invention is as follows: An automatic fixed-length cutting and end-face trimming device for metal bars includes a mounting platform with a mold mounted on it. A guide rod is connected to the rear end of the mold, and an identical mold is slidably mounted on the guide rod. A slide block is slidably mounted on the guide rod between the two molds. A top plate is slidably mounted on the slide block, and a telescopic component is connected between the top plate and the slide block. An adjustment component is provided on the slide block to adjust the distance between the two molds to accommodate the metal bar blank. Blank storage tanks are connected to both sides of the bottom of the mounting platform, and an upper bottom plate and a lower bottom plate are respectively connected between the upper and lower sides of the blank storage tanks on both sides. A material transfer assembly is provided at the upper end of the top plate. The material transfer assembly is used to transfer the metal rod blanks between the two molds to the blank storage box when the top plate moves upward. The bottom two sides of the blank storage box are symmetrically connected to arc-shaped sleeves. A linkage assembly is provided on the blank storage box. The linkage assembly is used to drive the arc-shaped sleeves to open and close symmetrically when the top plate moves upward, so as to unload the metal rod blanks in the blank storage box one by one. An association assembly is provided on the blank storage box. The association assembly is used to slide and fit with the top plate in the center. A trimming assembly is provided on the bottom plate. The trimming assembly is used to guide the metal rod blanks falling from the blank storage box and to grind their two ends.

[0006] Preferably, a feeding device, a fixed mold, and an electric breaking knife are installed sequentially on the mounting platform. The mold is installed on the mounting platform below the electric breaking knife. The feeding device contains a metal bar and conveys it to two molds behind the fixed mold. Each mold also includes a limiting slide rod. A sliding mold that cooperates with the electric breaking knife is slidably sleeved on the outer side of the limiting slide rod. A spring sleeved on the outer side of the limiting slide rod connects the sliding mold and the mold. A limiting baffle is also connected on the side away from the fixed mold.

[0007] Preferably, the slide block has a through hole, and the top plate slides through the through hole on the upper and lower sides of the slide block.

[0008] Preferably, the adjusting assembly includes a lead screw and a threaded sleeve. The lead screw is rotatably mounted on both ends of the slide block, and the threaded sleeve is threaded onto the outside of the lead screw. Each threaded sleeve is rotatably connected to a rotating plate on both sides of the mold.

[0009] Preferably, the material transfer assembly includes a guide frame plate and a limiting inclined platform. The top plate is rotatably connected to both sides of the upper end of the slide. The guide frame plates on both sides extend away from each other to the top of the two blank storage tanks. The lower end face of the guide frame plate is horizontally limited to the upper end of the slide. The limiting inclined platform is symmetrically connected to both sides of the upper end of the top plate and is inclined to the bottom of the two guide frame plates.

[0010] Preferably, the linkage assembly includes a rotating shaft, gears, a first sliding rod frame, a double-sided rack, a second sliding rod frame, and a top rod. Openings are provided on both sides of the bottom of the billet storage box. The rotating shaft is disposed within the openings and rotatably mounted on the inner walls of both sides of the billet storage box. Arc-shaped sleeves on both sides are fitted onto the outer side of their respective rotating shafts. Gears are fitted onto both ends of the rotating shaft. The first sliding rod frame is slidably disposed on the side of the billet storage box. The double-sided rack is connected to the lower end of the first sliding rod frame and positioned between the two gears, meshing with both gears. The second sliding rod frame is slidably fitted onto both sides of the billet storage box and positioned above the first sliding rod frame. A second rotating plate is rotatably connected between the end of the second sliding rod frame away from the mounting platform and the upper end of the first sliding rod frame. Sleeves and inclined blocks are connected one-to-one at the ends of the second sliding rod frames on both sides of the billet storage box, respectively. The top rod is connected to the top plate and slidably engages with and abuts against the inclined blocks on both sides.

[0011] Preferably, the two sides of the billet storage box are respectively connected to a second sleeve and a third sleeve. The first slide rod is slidably sleeved on the second sleeve, and a second spring sleeved on the outside of the first slide rod is connected between the second sleeve and the lower end of the slide rod. The second slide rod is slidably sleeved on the third sleeve, and a third spring sleeved on the outside of the second slide rod is connected between the third sleeve and the end of the second slide rod. The billet storage box is also connected to a sleeve rod that is slidably sleeved with the sleeve.

[0012] Preferably, the associated components include a guide rod frame and a sleeve. The guide rod frame is connected to both sides of the mounting platform. The sleeve is connected to the two blank storage boxes on one side that are close to each other and is slidably sleeved on the outside of the guide rod frame on each side. Each sleeve on both sides is connected to a sliding groove frame on the side that is close to each other. The top plate is connected to two sliders, and the sliders are slidably sleeved in the sliding groove frames on both sides. The lower end of the telescopic component is installed on the slider, and the upper end is connected to the slide block.

[0013] Preferably, the trimming assembly includes a guide plate, a support roller, a slide, a top frame, a guide rail, and a bidirectional telescopic component. The guide plate is connected to the opposite sides of the billet storage tanks. The support rollers are arranged in pairs, parallel to each other, to support the metal bar billets and are installed on the lower base plate below the corresponding guide plate. The slide is slidably mounted through the upper base plate, and an electric roller is installed at the lower end of the slide on the lower side of the upper base plate, directly above the pair of support rollers. The electric roller compresses and stabilizes the metal bar billets mounted on the support rollers and drives their rotation. A spring is connected between the upper end of the slide and the upper base plate, and a spring is sleeved on the outside of the slide. The top frame is connected to the lower end of the top plate and abuts against the upper surface of the slide. The guide rails are arranged in two parallel configurations and are installed on both sides of the lower base plate. The bidirectional telescopic component is centrally mounted on the guide rail, and motor seats that slide symmetrically at both ends of the bidirectional telescopic component are respectively installed on the output ends of the two sides of the guide rail. An electric grinding belt is installed on the motor seat.

[0014] Preferably, the guide rail is also equipped with a telescopic component two located between two sets of support rollers, and the upper output end of the telescopic component two is equipped with an inclined platform for ejecting the metal rod blank on the support roller.

[0015] The beneficial effects of this invention are: 1. The technical solution of this invention involves feeding metal bars into a feeding device and, through precise control of the feeding device, conveying metal bars of a fixed length to the rear end of a fixed mold. Then, an electric cutting knife, in conjunction with the mold, cuts the metal bars to a fixed length. Simultaneously, two molds are configured, so that when the rotating screw drives the rotating plate to rotate, it can push the mold that slides away from the guide rod relative to the mold fixedly mounted on the mounting platform for distance adjustment until it is adjusted to the required size for cutting the metal bars to a fixed length. At the same time, a limit baffle is connected to the sliding mold, so that when the feeding device conveys the metal bars to a fixed length, the conveying length of the metal bars can be further limited by the limit baffle, achieving dual fixed-length control and improving the accuracy of fixed-length cutting of the metal bar blanks. 2. The technical solution of this invention maintains the slide block in a centered position between the two molds during the adjustment of the distance between the two molds. This ensures that the top plate slidably mounted on the slide block and the guide frame plate rotatably connected to the top plate are also centered between the two molds. This allows the top plate's sliders on both sides to slide closer to the blank storage boxes via the sliding groove frame connected to the side sleeve, indirectly moving the blank storage boxes along with the top plate and slide block. This allows the blank storage boxes on both sides to move to a relatively centered position between the two molds. When the telescopic component retracts, it pulls the top plate upwards. The guide frame plate, which is connected to the upper part of the top plate, moves upward and removes the horizontal limit of the slide block, rotating downward until it contacts the limit inclined platform at the upper part of the top plate. This causes the guide frame plate to rotate from its original horizontal state to an inclined state. As it continues to move upward, it will lift the metal bar blanks cut between the two molds. After the electric cutting knife is lifted and moved upward, the inclined guide frame plates on both sides can support the metal bar blanks, moving them upward to the top of the mold and rolling them down along the guide frame plates into the blank storage boxes on both sides. This achieves efficient transfer of the cut metal bar blanks, thereby improving production efficiency and versatility. 3. The technical solution of this invention involves transferring the metal rod blank between the two molds to the blank storage box by moving the top plate upward. During this process, the top plate also drives the push rod upward, which then comes into contact with the inclined blocks sliding on the two blank storage boxes. This pushes the inclined blocks, sleeves, and slide rod brackets on the two blank storage boxes away from each other. Simultaneously, springs three and two are compressed, causing the rotating plate two to rotate, which in turn drives slide rod bracket one and the double-sided rack upward. Through meshing, the gears and shaft rotate, allowing the arc-shaped sleeves on both sides to rotate upward within the blank storage box. This allows the metal rod blank to fall between the arc-shaped sleeves on both sides and be fitted onto the metal rod blank. Conversely, when the top plate moves downward, the elastic force of springs two and three causes slide rod bracket one and slide rod bracket two to reset and drive the double-sided rack downward, thus causing the arc-shaped sleeves on both sides to rotate upward. The process reverses, guiding the interlocking metal billets downwards until they roll down through the guide plate between the two sets of support rollers. Simultaneously, as the top plate continues to descend, its lower frame contacts the carriage, causing the electric roller to press and adhere the metal billet onto the lower support roller. Controlling the two motor mounts and the electric grinding belt to move closer together allows for centering and limiting the metal billet's position, and performs finishing and grinding on both ends. During this process, the electric roller can also rotate the metal billet to improve the finishing effect. If necessary, the motor mount can be controlled to deflect the electric grinding belt at a certain angle before approaching the metal billet to correct burrs on its end face edges and perform chamfering, reducing subsequent processing steps and improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a sectional view of the side structure of the present invention; Figure 3 This is a schematic diagram of the structure of the feedless device of the present invention; Figure 4 This is a schematic diagram of the structure of the adjustment component of the present invention; Figure 5 This is a schematic diagram of the material transfer assembly of the present invention; Figure 6 This is a bottom view of the linkage component, the association component, and the trimming component of the present invention; Figure 7 This is a cross-sectional view of the linkage component, the association component, and the trimming component of the present invention; Figure 8 This is a schematic diagram of the structure of the linkage component, the association component, and the trimming component of the present invention; Figure 9 This is a schematic diagram of the linkage component and the trimming component of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Mounting platform; 2. Feeding equipment; 3. Fixed mold; 4. Electric pressure cutter; 5. Mold; 6. Metal bar stock; 7. Metal bar billet; 8. Guide rod 1; 9. Limiting slide rod; 10. Sliding mold; 11. Spring 1; 12. Limiting baffle; 13. Slide seat; 14. Lead screw; 15. Threaded sleeve plate; 16. Rotating plate 1; 17. Through hole; 18. Top plate; 19. Sliding block; 20. Telescopic component 1; 21. Guide frame plate; 22. Limiting inclined platform; 23. Guide rod frame; 24. Sleeve 1; 25. Billet storage box; 26. Upper base plate; 27. Lower base plate; 28. Slide groove frame 29. Rotating shaft; 30. Arc-shaped sleeve; 31. Gear; 32. Slide rod frame one; 33. Sleeve seat two; 34. Spring two; 35. Double-sided rack; 36. Sleeve seat three; 37. Slide rod frame two; 38. Spring three; 39. Sleeve; 40. Inclined block; 41. Sleeve rod; 42. Rotating plate two; 43. Top rod; 44. Guide plate; 45. Support roller; 46. Slide frame; 47. Electric roller; 48. Spring four; 49. Top frame; 50. Guide rail; 51. Bidirectional telescopic component; 52. Motor base; 53. Electric grinding belt; 54. Telescopic component two; 55. Inclined platform. Detailed Implementation

[0018] The following will be combined with the appendix Figure 1 To be continued Figure 9 The technical solutions in the embodiments of the present invention have been clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: like Figures 1-9 As shown, the present invention discloses an automatic fixed-length cutting and end-face trimming device for metal bars, including a mounting platform 1, on which a mold 5 is mounted. A guide rod 8 is connected to the rear end of the mold 5, and an identical mold 5 is slidably sleeved on the guide rod 8. A slide seat 13 is slidably sleeved on the guide rod 8 between the two molds 5. A top plate 18 is slidably sleeved through the slide seat 13, and a telescopic component 20 is connected between the top plate 18 and the slide seat 13. An adjustment component is provided on the slide seat 13 to adjust the distance between the two molds 5 to accommodate the metal bar blank 7. Blank storage tanks 25 are connected to both sides of the bottom of the mounting platform 1, and an upper bottom plate 26 and a lower bottom plate 27 are respectively connected between the upper and lower sides of the two blank storage tanks 25. A material transfer assembly is provided at the upper end of the top plate 18. The material transfer assembly is used to transfer the metal rod blank 7 between the two molds 5 to the blank storage box 25 when the top plate 18 moves upward. The bottom two sides of the blank storage box 25 are symmetrically connected to the arc-shaped sleeve 30. A linkage assembly is provided on the blank storage box 25. The linkage assembly is used to drive the arc-shaped sleeve 30 to open and close symmetrically when the top plate 18 moves upward, so as to unload the metal rod blank 7 in the blank storage box 25 one by one. An association assembly is provided on the blank storage box 25. The association assembly is used to slide and fit with the top plate 18 in the center. A trimming assembly is provided on the bottom plate 27. The trimming assembly is used to guide the metal rod blank 7 falling from the blank storage box 25 and to grind its two ends.

[0020] The mounting platform 1 is equipped with a feeding device 2, a fixed mold 3, and an electric crushing knife 4, which are installed in sequence from front to back. The mold 5 is installed on the mounting platform 1 below the electric crushing knife 4. The feeding device 2 contains a metal bar 6 and conveys it to the two molds 5 behind the fixed mold 3. Each mold 5 also includes a limiting slide rod 9. A sliding mold 10 that cooperates with the electric crushing knife 4 is slidably sleeved on the outside of the limiting slide rod 9. A spring 11 sleeved on the outside of the limiting slide rod 9 connects the sliding mold 10 and the mold 5. A limiting baffle 12 is also connected on the side away from the fixed mold 3.

[0021] The feeding device 2 is an existing device, specifically a roller type or a linear type. The sliding mold 10 is slidably set on the mold 5 so that when the electric breaking knife 4 is running, it can drive the sliding mold 10 to slide down along the limiting slide rod 9 and compress the spring 11 to form a certain breaking stroke. After the electric breaking knife 4 is lifted, the sliding mold 10 can be reset under the action of the spring 11 and the broken metal rod blank 7 can be lifted.

[0022] The setting of the limiting baffle 12 allows the spacing of the two molds 5 to be adjusted to meet the cutting specifications of the metal bar blank 7 at a fixed length, and to cooperate with the feeding device 2 to convey the metal bar 6 at a fixed length. At the same time, when the metal bar 6 comes into contact with the limiting baffle 12, the feeding will automatically stop, realizing precise control of the fixed length conveying of the metal bar 6 from multiple aspects, and ensuring the accuracy of the fixed length cutting of the metal bar blank 7.

[0023] The slide block 13 has a through hole 17, and the top plate 18 slides through the through hole 17 on the upper and lower sides of the slide block 13, so that the top plate 18 can slide stably inside it.

[0024] Example 2: like Figures 1-9 As shown, the present invention discloses an automatic fixed-length cutting and end-face trimming device for metal bars. Compared with Embodiment 1, this embodiment discloses the structure of the adjustment component.

[0025] The adjustment assembly includes a lead screw 14 and a threaded sleeve 15. The lead screw 14 is rotatably mounted on both ends of the slide block 13, and the threaded sleeve 15 is threadedly mounted on the outside of the lead screw 14. Each threaded sleeve 15 is rotatably connected to a rotating plate 16 between it and the molds 5 on both sides.

[0026] The rotating screw 14 causes the threaded sleeve 15 to slide, which in turn causes the rotating plate 16 to rotate. This allows the mold 5, which is sliding away from the guide rod 8, to be adjusted relative to the mold 5 fixedly installed on the mounting table 1 until it is adjusted to the size required for cutting the metal bar 6 to a fixed length. At the same time, the sliding mold 5 is connected to a limit baffle 12, which allows the feeding equipment 2 to further limit the conveying length of the metal bar 6 when it is conveyed to a fixed length, thereby achieving dual fixed length control and improving the accuracy of cutting the metal bar billet 7 to a fixed length.

[0027] Example 3: like Figures 1-9 As shown, this invention discloses an automatic fixed-length cutting and end-face trimming device for metal bars. Compared with Embodiment 2, this embodiment discloses the structure of the material transfer component.

[0028] The material transfer assembly includes a guide frame plate 21 and a limiting inclined platform 22. The top plate 18 is rotatably connected to the guide frame plate 21 on both sides of the upper end of the slide block 13. The guide frame plates 21 on both sides extend away from each other to the top of the two blank storage boxes 25, and the lower end surface of the guide frame plate 21 is horizontally limited to the upper end of the slide block 13. The limiting inclined platform 22 is symmetrically connected to both sides of the upper end of the top plate 18 and is inclined to the bottom of the guide frame plates 21 on both sides.

[0029] The associated components include a guide rod frame 23 and a sleeve 24. The guide rod frame 23 is connected to both sides of the mounting platform 1. The sleeve 24 is connected to the two blank storage boxes 25 on one side of each other and is slidably sleeved on the outside of the guide rod frame 23 on each side. The sleeves 24 on both sides are connected to a sliding groove frame 28 on one side of each other. The top plate 18 is connected to two sides of a slider 19, and the slider 19 is slidably sleeved in the sliding groove frame 28 on both sides. The lower end of the telescopic component 20 is installed on the slider 19, and the upper end is connected to the slide seat 13.

[0030] This ensures that the slide block 13 remains centered between the two molds 5 while adjusting the distance between them. This also ensures that the top plate 18 slidably mounted on the slide block 13 and the guide frame plate 21 rotatably connected to the top plate 18 are centered between the two molds 5. In this way, the sliding arrangement of the sliders 19 on both sides of the top plate 18 and the blank storage boxes 25 on both sides, which are close to each other, indirectly drives the blank storage boxes 25 to move with the top plate 18 and the slide block 13, so that the blank storage boxes 25 on both sides can also move to a relatively centered position between the two molds 5.

[0031] By controlling the retraction of the telescopic component 20, the top plate 18 is pulled upward, which in turn drives the guide frame plate 21, which is rotatably connected to the upper end of the top plate 18, to move upward and cancel the horizontal limit of the slide block 13 to rotate downward until it contacts the limiting inclined platform 22 at the upper end of the top plate 18. This causes the guide frame plate 21 to rotate from its original horizontal state to an inclined state. As it continues to move upward, it will lift the metal rod blank 7 cut between the two molds 5. After the electric cutting knife 4 is lifted and moved upward, the inclined guide frame plates 21 on both sides can support the metal rod blank 7, drive it to move upward above the mold 5, and roll down along the guide frame plates 21 into the blank storage tanks 25 on both sides. This achieves efficient transfer of the cut metal rod blank 7, thereby improving production efficiency and versatility.

[0032] Example 4: like Figures 1-9 As shown, the present invention discloses an automatic fixed-length cutting and end-face trimming device for metal bars. Compared with Embodiment 3, this embodiment discloses the structure of the linkage component.

[0033] The linkage assembly includes a rotating shaft 29, a gear 31, a slide bar first 32, a double-sided rack 35, a slide bar second 37, and a top rod 43. Openings are provided on both sides of the bottom of the billet storage box 25. The rotating shaft 29 is located within these openings and is rotatably mounted on the inner walls of both sides of the billet storage box 25. Arc-shaped sleeves 30 on both sides are fitted onto the outer side of the rotating shaft 29 on their respective sides. The gear 31 is fitted onto both ends of the rotating shaft 29. The slide bar first 32 is slidably mounted on the side of the billet storage box 25, and the double-sided rack 35 is connected to the lower end of the slide bar first 32. The chalk is located between the gears 31 on both sides and meshes with the gears 31 on both sides. The second slide rod frame 37 is slidably sleeved on both sides of the billet storage box 25 and located above the first slide rod frame 32. The end of the second slide rod frame 37 away from the mounting platform 1 is rotatably connected to the upper end of the first slide rod frame 32. The two ends of the second slide rod frame 37 on the billet storage boxes 25 are respectively connected to the sleeve 39 and the inclined block 40. The top rod 43 is connected to the top plate 18 and slides against the inclined blocks 40 on both sides.

[0034] The two sides of the billet storage box 25 are respectively connected to the second sleeve 33 and the third sleeve 36. The first slide rod bracket 32 ​​is slidably sleeved on the second sleeve 33, and the lower end of the second sleeve 33 and the first slide rod bracket 32 ​​is connected by the second spring 34 sleeved on the outside of the first slide rod bracket 32. The second slide rod bracket 37 is slidably sleeved on the third sleeve 36, and the end of the third sleeve 36 and the second slide rod bracket 37 is connected by the third spring 38 sleeved on the outside of the second slide rod bracket 37. The billet storage box 25 is also connected to the sleeve rod 41 which is slidably sleeved on the sleeve 39.

[0035] The installation of sleeve 2 33 and sleeve 36 ensures the stability of slide rod bracket 1 32 and slide rod bracket 2 37 during sliding. The sliding sleeve 39 and sleeve rod 41 can also stabilize the sliding of sleeve 39 and inclined block 40. The installation of spring 2 34 and spring 3 38 enables slide rod bracket 1 32 and slide rod bracket 2 37 to be reset to their initial state without external force.

[0036] During the process of transferring the metal rod blank 7 between the two molds 5 to the blank storage tank 25 by moving the top plate 18 upward, the top plate 18 also drives the ejector rod 43 upward, which then comes into contact with the inclined blocks 40 sliding on the two blank storage tanks 25. This pushes the inclined blocks 40, sleeves 39, and slide rod brackets 37 on the two blank storage tanks 25 away from each other. In the process, the springs 38 and 34 are also compressed, causing the rotating plate 42 to rotate, which drives the slide rod bracket 32 ​​and the double-sided rack 35 upward, and drives the gears through meshing. Rotation of 31 and 29 causes the arc-shaped sleeves 30 on both sides to rotate upward within the billet storage box 25, allowing the metal rod billet 7 to fall between the arc-shaped sleeves 30 and be fitted onto it. Conversely, when the top plate 18 moves downward, under the elastic force of springs 24 and 38, slide rod bracket 1 32 and slide rod bracket 2 37 will reset and drive the double-sided rack 35 downward, causing the arc-shaped sleeves 30 on both sides to reverse, guiding the metal rod billet 7 fitted between them downward and then opening and falling.

[0037] Example 5: like Figures 1-9 As shown, the present invention discloses an automatic fixed-length cutting and end-face trimming device for metal bars. Compared with Embodiment 4, this embodiment discloses the structure of the trimming component.

[0038] The trimming assembly includes a guide plate 44, a support roller 45, a slide 46, a top frame 49, a guide rail 50, and a bidirectional telescopic component 51. The guide plate 44 is connected to the opposite sides of the billet storage tanks 25. The support rollers 45 are arranged in pairs, parallel to each other, to support the metal bar billet 7 and are installed on the lower base plate 27 below the corresponding guide plate 44. The slide 46 slides through the upper base plate 26, and an electric roller 47 is installed at the lower extension end of the slide 46 on the upper base plate 26, directly above the pair of support rollers 45. The electric roller 47 and the support roller 45 are connected in pairs. The metal rod blank 7 mounted on the support roller 45 is extruded and stabilized and driven to rotate. A spring 48 is sleeved on the outside of the slide 46 and connected between the upper end of the slide 46 and the upper base plate 26. The top frame 49 is connected to the lower end of the top plate 18 and abuts against the upper end surface of the slide 46. The guide rails 50 are two parallel ones and are installed on both sides of the lower base plate 27. The bidirectional telescopic member 51 is centrally installed on the guide rail 50, and motor seats 52 that slide symmetrically at both ends of the guide rail 50 are respectively installed on the output ends of the bidirectional telescopic member 51. An electric grinding belt 53 is installed on the motor seat 52.

[0039] The metal rod blank 7 falling from the blank storage box 25 rolls down through the guide plate 44 between the two sets of support rollers 45. At the same time, as the top plate 18 continues to move down, its lower top frame 49 will abut against the slide 46, causing the electric roller 47 to press and adhere to the metal rod blank 7 on the lower support roller 45. By controlling the two motor seats 52 and the electric grinding belt 53 to move closer to each other, the metal rod blank 7 can be centered and limited, and its two ends can be corrected and ground. During the process, the electric roller 47 can also drive the metal rod blank 7 to rotate, improving the finishing effect. If necessary, the motor seat 52 can be controlled to drive the electric grinding belt 53 to deflect at a certain angle before approaching the metal rod blank 7 to correct the burrs on its end face edge and perform chamfering, reducing subsequent processing steps and improving production efficiency.

[0040] The guide rail 50 is also equipped with a telescopic component 2 54 located between two pairs of support rollers 45. The upper output end of the telescopic component 2 54 is equipped with a ramp 55 for ejecting the metal rod blank 7 on the support rollers 45. After the two ends of the metal rod blank 7 are trimmed, the telescopic component 2 54 can extend to drive the ramp 55 to move upward, so as to eject the trimmed metal rod blank 7 between the two support rollers 45 and roll it down along the inclined surface of the ramp 55 to achieve unloading and improve processing efficiency.

[0041] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. An automatic fixed-length cutting and end-face trimming device for metal bars, comprising a mounting table, on which a mold is mounted, characterized in that, The rear end of the mold is connected to a guide rod, and an identical mold is slidably sleeved on the guide rod. A slide block is slidably sleeved on the guide rod between the two molds. A top plate is slidably sleeved through the slide block from top to bottom, and a telescopic component is connected between the top plate and the slide block. An adjustment component is provided on the slide block. The adjustment component is used to adjust the distance between the two molds to accommodate the metal rod blank. Both sides of the bottom of the mounting platform are connected to blank storage boxes. An upper bottom plate and a lower bottom plate are respectively connected between the upper and lower sides of the blank storage boxes on both sides. A material transfer assembly is provided at the upper end of the top plate. The material transfer assembly is used to transfer the metal rod blanks between the two molds to the blank storage box when the top plate moves upward. The bottom two sides of the blank storage box are symmetrically connected to arc-shaped sleeves. A linkage assembly is provided on the blank storage box. The linkage assembly is used to drive the arc-shaped sleeves to open and close symmetrically when the top plate moves upward, so as to unload the metal rod blanks in the blank storage box one by one. An association assembly is provided on the blank storage box. The association assembly is used to slide and fit with the top plate in the center. A trimming assembly is provided on the bottom plate. The trimming assembly is used to guide the metal rod blanks falling from the blank storage box and to grind their two ends.

2. The automatic fixed-length cutting and end-face trimming device for metal bars according to claim 1, characterized in that, The mounting platform is equipped with a feeding device, a fixed mold, and an electric crushing knife in sequence. The mold is mounted on the mounting platform below the electric crushing knife. The feeding device contains a metal bar and conveys it to two molds behind the fixed mold. Each mold also includes a limiting slide rod. A sliding mold that cooperates with the electric crushing knife is slidably sleeved on the outside of the limiting slide rod. A spring sleeved on the outside of the limiting slide rod connects the sliding mold and the mold. A limiting baffle is also connected on the side away from the fixed mold.

3. The automatic fixed-length cutting and end-face trimming device for metal bars according to claim 1, characterized in that, The slide block has a through hole, and the top plate slides through the through hole on the upper and lower sides of the slide block.

4. The automatic fixed-length cutting and end-face trimming device for metal bars according to claim 1, characterized in that, The adjustment assembly includes a lead screw and a threaded sleeve. The lead screw is rotatably mounted on both ends of the slide block, and the threaded sleeve is threaded onto the outside of the lead screw. Each threaded sleeve is rotatably connected to a rotating plate on both sides of the mold.

5. The automatic fixed-length cutting and end-face trimming device for metal bars according to claim 1, characterized in that, The material transfer assembly includes a guide frame plate and a limiting inclined platform. The top plate is rotatably connected to both sides of the upper end of the slide. The guide frame plates on both sides extend away from each other to the top of the two blank storage tanks. The lower end face of the guide frame plate is horizontally limited to the upper end of the slide. The limiting inclined platform is symmetrically connected to both sides of the upper end of the top plate and is inclined to the bottom of the guide frame plates on both sides.

6. The automatic fixed-length cutting and end-face trimming device for metal bars according to claim 1, characterized in that, The linkage assembly includes a rotating shaft, gears, a first sliding rod frame, a double-sided rack, a second sliding rod frame, and a top rod. Openings are provided on both sides of the bottom of the billet storage box. The rotating shaft is located within these openings and rotatably mounted on the inner walls of both sides of the billet storage box. Arc-shaped sleeves on both sides are fitted onto the outer side of their respective rotating shafts. Gears are fitted onto both ends of the rotating shaft. The first sliding rod frame is slidably mounted on the side of the billet storage box. The double-sided rack is connected to the lower end of the first sliding rod frame and positioned between the two gears, meshing with them. The second sliding rod frame is slidably mounted on both sides of the billet storage box and positioned above the first sliding rod frame. A second rotating plate is rotatably connected between the end of the second sliding rod frame away from the mounting platform and the upper end of the first sliding rod frame. Sleeves and inclined blocks are connected to the ends of the second sliding rod frames on both sides of the billet storage box, respectively. The top rod is connected to the top plate and slidably engages with the inclined blocks on both sides.

7. The automatic fixed-length cutting and end-face trimming device for metal bars according to claim 6, characterized in that, The two sides of the billet storage box are respectively connected to the second sleeve and the third sleeve. The first slide rod is slidably sleeved on the second sleeve, and the second sleeve and the lower end of the slide rod are connected by a second spring sleeved on the outside of the first slide rod. The second slide rod is slidably sleeved on the third sleeve, and the third sleeve and the end of the second slide rod are connected by a third spring sleeved on the outside of the second slide rod. The billet storage box is also connected to a sleeve rod that is slidably sleeved with the sleeve.

8. The automatic fixed-length cutting and end-face trimming device for metal bars according to claim 1, characterized in that, The associated components include a guide rod frame and a sleeve. The guide rod frame is connected to both sides of the mounting platform. The sleeve is connected to the two blank storage boxes on one side of each other and is slidably sleeved on the outside of the guide rod frame on each side. The sleeves on both sides of each other are connected to a sliding groove frame. The top plate is connected to two sliders, and the sliders are slidably sleeved in the sliding groove frames on both sides. The lower end of the telescopic component is installed on the slider, and the upper end is connected to the slide block.

9. The automatic fixed-length cutting and end-face trimming device for metal bars according to claim 1, characterized in that, The trimming assembly includes a guide plate, support rollers, a slide, a top frame, guide rails, and a bidirectional telescopic component. The guide plate is connected to the opposite sides of the billet storage tanks. The support rollers are arranged in pairs, parallel to each other, to support the metal bar billets and are installed on the lower base plate below the corresponding guide plate. The slide is slidably mounted through the upper base plate, and an electric roller is installed above the pair of support rollers at the lower extension end of the slide on the upper base plate. The electric roller compresses and stabilizes the metal bar billets mounted on the support rollers and drives their rotation. A spring is connected between the upper end of the slide and the upper base plate, and a spring is sleeved on the outside of the slide. The top frame is connected to the lower end of the top plate and abuts against the upper surface of the slide. The guide rails are arranged in two parallel configurations and are installed on both sides of the lower base plate. The bidirectional telescopic component is centrally mounted on the guide rail, and motor seats that slide symmetrically at both ends of the bidirectional telescopic component are respectively installed on the output ends of the two sides of the guide rail. An electric grinding belt is installed on the motor seat.

10. The automatic fixed-length cutting and end-face trimming device for metal bars according to claim 9, characterized in that, The guide rail is also equipped with a telescopic component two located between two pairs of support rollers. The upper output end of the telescopic component two is equipped with an inclined platform for ejecting the metal rod blank on the support roller.

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