A forming and drawing machine for metal and its drawing process

Abstract

The present invention relates to the technical field of drawing machines, and discloses a forming drawing machine for metal, comprising a workpiece supporting and feeding frame, a die head frame, a drawing and clamping carriage, and a drawing trolley. A first reminder mechanism and a second reminder mechanism are connected to both sides of the top of the workpiece supporting and feeding frame. The present invention utilizes the first reminder mechanism to cooperate with two mounting plates, a rack plate, a gear, a rotating shaft, and a fixed cylinder, so that multiple second metal sheets strike multiple first metal sheets, producing a continuous striking sound. A short dinging sound is emitted to prompt a worker to return to the workstation and remove the workpiece. The second reminder mechanism utilizes the contact and cooperation of two metal contacts in the second reminder mechanism to cause a buzzer to emit a buzzing sound. The continuous buzzing sound is used to remind the operator to stand outside the drawing and clamping carriage and prepare to receive the material for a second time.

Description

Technical Field

[0001] The present invention relates to the technical field of drawing machines, in particular to a forming drawing machine for metal and a drawing process thereof. Background Art

[0002] Metal forming drawing machines use tensile force to force metal billets (such as bars and tubes) through dies to achieve cross-sectional reduction or special-shaped forming. Their core components include high-hardness dies, mechanical drawing systems, and lubrication devices. They can produce high-precision, smooth-surfaced wires and tubes, and are widely used in the automotive, aerospace, construction, and other fields. They feature high efficiency and energy saving, a high degree of automation, and significantly improved finished product strength.

[0003] For example, a chain drawing machine disclosed in patent publication number CN117206353B includes a drawing support mechanism, a pipe guiding mechanism installed on the drawing support mechanism, and a pipe wall stain removal mechanism installed in the pipe guiding mechanism.

[0004] While the aforementioned device solves the problem of black spots on the outer wall of drawn steel pipes, it still has the following drawbacks: The small drawing machine lacks an automatic unloading system. After the workpiece is pulled from the die head by the drawing carriage, the operator typically needs to remove it immediately when the carriage automatically releases the workpiece. If the operator loses focus or is distracted during this time, the workpiece may fall directly onto the chain rack, causing damage or cosmetic defects. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a forming and drawing machine for metal to solve the problems raised in the background art, so that the drawing machine has a multi-stage reminder material connection action.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a forming and drawing machine for metal, comprising a workpiece supporting and feeding rack, a die head rack, a drawing and clamping carriage and a drawing trolley, wherein the top two sides of the workpiece supporting and feeding rack are connected with a first reminding mechanism and a second reminding mechanism, the first reminding mechanism comprises a moving component, a sound component and two mounting plates, the two mounting plates are symmetrically arranged, and the two mounting plates are respectively located on both sides of the workpiece supporting and feeding rack, the sound component comprises a first metal sheet and a second metal sheet, the outer wall of one of the mounting plates is fixedly connected to a transverse plate, a rotating shaft is rotatably connected to the inner wall of the transverse plate, a plurality of second metal sheets are fixedly connected to the outer wall of the rotating shaft, the top of the transverse plate is fixedly connected to a fixed cylinder sleeved on the outside of the rotating shaft, the inner wall of the fixed cylinder is fixedly connected to a plurality of first metal sheets corresponding to the second metal sheets, the bottom of the rotating shaft is fixedly connected to a gear, the outer wall of the other mounting plate is fixedly connected to a rack plate meshed with the gear, and the mounting plate is connected to the moving component.

[0007] Furthermore, the movable assembly includes two symmetrically arranged L-shaped plates, a T-shaped slot is provided on the top of the L-shaped plate, a movable plate is slidably connected to the inside of the L-shaped plate, a T-shaped block corresponding to the T-shaped slot is fixedly connected to the bottom of the movable plate, a sliding shaft is slidably connected to the inside of the movable plate, the outer end of the sliding shaft is fixedly connected to the vertical plate, the outer side of the sliding shaft is sleeved with a first spring, the inner wall of the vertical plate is fixedly connected to two rectangular rods that slide with the movable plate, the outer wall of the vertical plate is fixedly installed with a first roller, and the two first rollers are symmetrically arranged.

[0008] Furthermore, the second reminder mechanism includes a mobile component with the same structure as the first reminder mechanism, two mounting plates with the same structure as the first reminder mechanism, a buzzer and a trigger component, the trigger component includes two metal contacts, the two metal contacts are symmetrically arranged and respectively fixedly mounted on the inner walls of the two mounting plates, the two metal contacts are electrically connected to the buzzer, and the buzzer is fixedly mounted on the top of one of the mobile plates in the corresponding mobile component.

[0009] Furthermore, a third reminder mechanism is also connected to the top of the die head frame, and the third reminder mechanism includes a moving component with the same structure as the second reminder mechanism, two mounting plates with the same structure as the second reminder mechanism, a trigger component with the same structure as the second reminder mechanism, a support member and a sensing component, and the trigger component is electrically connected to the controller in the drawing trolley for controlling its clamping, and the support member includes an L-shaped support rod, the cross bar of the L-shaped support rod is fixedly connected to the support plate, and a plurality of second rollers are fixedly installed on the top of the support plate, and the sensing component includes two vertical poles, one of which is fixedly connected to one side of the top of the drawing and clamping trolley frame and close to the outer wall of the die head frame, and the other vertical pole is fixedly installed on the outer wall of the drawing trolley, and the opposite surfaces of the two vertical poles are connected to sensors.

[0010] Furthermore, both sides of the inner wall of the drawing and clamping carriage are fixedly connected with installation boxes, and multi-stage electric push rods are fixedly installed in the two installation boxes. The output ends of the two multi-stage electric push rods are respectively fixedly connected with an integrated rod, and a lower extension groove connected to the T-slot is opened in the movable plate of each movable assembly, and a lower extension plate fixedly connected to the bottom of the T-block is slidably connected in the lower extension groove. The three lower extension plates located on one side of the drawing and clamping carriage are fixedly connected to one of the integrated rods, and the other integrated rod is fixedly connected to the three lower extension plates located on the other side of the drawing and clamping carriage.

[0011] Furthermore, the outer walls of the two vertical plates in the first, second and third reminder mechanisms are connected to an adjustment component for adjusting the height of the mounting plate, and the adjustment component includes a fixed plate, which is fixedly connected to the outer wall of the vertical plate, and a rectangular groove and a side groove are provided in the fixed plate, and the side groove and the rectangular groove are connected for communication, and a rectangular block is slidably connected in the rectangular groove, and multiple rectangular blocks are respectively fixedly connected to multiple mounting plates, and a threaded rod fixedly connected to the outer wall of the rectangular block is slidably connected in the side groove, and the outer side of the threaded rod is threadedly connected to a threaded ring, and the inner wall of the threaded ring is against the outer wall of the fixed plate.

[0012] Furthermore, a second spring is fixedly connected to the top surface of the inner wall of the rectangular groove, the other end of the second spring is fixedly connected to the rectangular block, the top surface of the rectangular block is fixedly connected to the central axis, and the second spring passing through the central axis is slidably connected to the fixed plate.

[0013] A drawing process for a metal forming drawing machine comprises the following steps:

[0014] S1: The workpiece enters from the workpiece supporting and feeding rack, passes through the die head rack, and is clamped and drawn by the drawing trolley on the drawing and clamping carriage. After the workpiece moves to the outer wall of the end and disengages from the first reminding mechanism, the two first rollers disengage from the outer wall of the workpiece. After the two first rollers lose the extrusion force of the workpiece at the same time, under the action of the first spring, the vertical plate and the sliding shaft slide on the moving plate, driving the two first rollers to approach each other, so that the two mounting plates approach each other, so that the rack plate and the gear engage with the gear, and the rotation of the gear drives the rotating shaft to rotate in the horizontal plate, and the rotating shaft drives multiple second metal sheets on the outside to rotate. During the rotation of the second metal sheet, it hits multiple first metal sheets on the inner wall of the fixed cylinder, making a continuous hitting sound, which reminds the operator for the first time to stand on the outside of the drawing and clamping carriage to prepare for material reception;

[0015] S2: After the operator is reminded for the first time, if the operator does not respond to the first reminder in time, as the workpiece continues to move, it will gradually separate from the two first rollers 9 in the second reminder mechanism. At this time, the two first rollers lose the squeezing of the workpiece. Under the action of the first spring, the two vertical plates drive the mounting plates closer to each other, so that the two metal contacts touch. The contact of the two metal contacts can make the buzzer sound. The continuous buzzing sound is used to remind the operator for the second time to stand on the outside of the drawing and clamping carriage to prepare for material connection;

[0016] S3: After the operator is reminded for the second time, the operator is still not at the workstation. Therefore, the workpiece continues to be pulled and moved, and gradually separates from the two first rollers in the third reminder mechanism. The two first rollers lose the squeezing of the workpiece. Under the action of the first spring, the two vertical plates drive the mounting plates closer to each other, so that the two metal contacts touch. When the two metal contacts in the third reminder mechanism touch, the trigger component is linked with the controller to control the clamping module to maintain the clamping state, so that the workpiece is supported by the support plate and the second roller after it is separated from the mold in the die head frame. That is, after the workpiece is separated from the die head frame, the pulling trolley stops and no longer moves, but always maintains the clamping state of the workpiece;

[0017] S4: When the drawing trolley moves, one of the vertical poles in the sensor assembly will move with the drawing trolley. When the operator needs to unload the workpiece, the sensor light curtain between the two vertical poles will be cut off. When the sensor light curtain is cut off, the clamping module of the drawing trolley will automatically release, so that the worker can catch the workpiece and remove the drawing clamping carriage;

[0018] S5: When encountering workpieces of different diameters, the threaded ring can be rotated to loosen the threaded rod and move the rectangular block so that it moves in the rectangular groove. When the rectangular block moves, it drives the second spring to be compressed or stretched, and at the same time drives the central axis to move. The rectangular block drives the mounting plate to move up and down, and the position of the rack plate and metal contact can be adjusted;

[0019] S6: After a workpiece is pulled, the multi-stage electric push rod is started, and its output end pushes the integrated rod, driving multiple lower extension plates on the same side to move. Each lower extension plate drives the T-block and the movable plate to move in the L-shaped plate, driving the vertical plate and the first roller to move to both sides, thereby facilitating the placement of the next workpiece.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. This forming and drawing machine for metal uses a first reminder mechanism, which utilizes two mounting plates, a rack plate, a gear, a rotating shaft, and a fixed cylinder to cooperate with each other, so that multiple second metal sheets hit multiple first metal sheets, emitting a continuous hitting sound, and a short dinging sound is emitted to prompt the worker to return to the workstation to remove the workpiece;

[0022] 2. This type of forming and drawing machine for metal can make the buzzer sound by the contact and cooperation of two metal contacts in the second reminder mechanism. The continuous buzzing sound is used to remind the operator to stand outside the drawing and clamping carriage to prepare for material connection for the second time;

[0023] 3. This type of forming drawing machine for metal can control the clamping mechanism of the drawing trolley to continue clamping the workpiece through the cooperation of the sensing component and the metal contact in the third reminder mechanism, so that the workpiece will not fall on the chain in the drawing clamping carriage. The sensor light curtain on the two vertical poles can be cut off to enable the drawing trolley to release the workpiece and facilitate the removal of the workpiece.

[0024] 4. The present invention realizes the linkage of feed guide, positioning and non-electric reminder through the structural coupling of the workpiece support feed rack, the die head rack and multiple reminder mechanisms. During the drawing process of the metal workpiece, the workpiece support feed rack and the die head rack provide accurate feed guide and positioning for the workpiece, ensuring that the workpiece can smoothly enter the drawing process. At the same time, the first reminder mechanism, the second reminder mechanism and the third reminder mechanism can monitor the status of the workpiece in real time through the coordinated action of the moving components, the sound components, the trigger components and the sensing components, and accurately trigger the reminder when the workpiece reaches a specific position or state. The realization of such precise triggering timing avoids safety accidents and quality problems caused by untimely reminders, improves the degree of automation and intelligence of the drawing machine, and further enhances the advantages of this application over the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of the workpiece support and feeding rack, die head rack and drawing trolley of the present invention;

[0026] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the workpiece supporting and feeding rack of the present invention;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of a local state of the present invention;

[0028] Figure 4 Schematic diagram of the three-dimensional structure of the vertical plate, the movable plate and the first roller of the present invention;

[0029] Figure 5 It is a schematic diagram of the three-dimensional cross-sectional structure of the transverse plate and the fixed cylinder of the present invention;

[0030] Figure 6 For the present invention Figure 5 Schematic diagram of the three-dimensional enlarged structure at A in the middle;

[0031] Figure 7 Schematic diagram of the three-dimensional structure of the movable plate, rectangular rod and sliding shaft of the present invention;

[0032] Figure 8 This is a schematic diagram of the three-dimensional structure of the fixing plate, the mounting plate and the metal contacts of the present invention;

[0033] Figure 9 It is a schematic diagram of the three-dimensional structure of the fixing plate, rectangular groove, rectangular block and threaded ring of the present invention;

[0034] Figure 10 Schematic diagram of the three-dimensional structure of the T-slot, down-extended slot, T-block and down-extended plate of the present invention;

[0035] Figure 11 This is a schematic diagram of the three-dimensional structure of the L-shaped support rod, the support plate and the second roller of the present invention;

[0036] Figure 12 It is a schematic diagram of the three-dimensional structure of the drawing and clamping carriage frame, the drawing trolley and the two upright poles of the present invention.

[0037] Figure: 1. Workpiece support and feed rack; 2. Die head rack; 3. Drawing and clamping carriage; 4. Drawing trolley; 5. Vertical pole; 6. Moving plate; 7. L-shaped plate; 8. Vertical plate; 9. First roller; 10. Sliding shaft; 11. Rectangular rod; 12. Lower extension plate; 13. Integrated rod; 14. Mounting box; 15. Multi-stage electric push rod; 16. L-shaped support rod; 17. First spring; 18. Mounting plate; 19. T-slot; 20. Lower extension slot ; 21. Rack plate; 22. Horizontal plate; 23. Fixed cylinder; 24. Fixed plate; 25. Gear; 26. Center axis; 27. Rectangular groove; 28. Rectangular block; 29. ​​Threaded rod; 30. Threaded ring; 31. Side groove; 32. Rotating shaft; 33. First metal sheet; 34. Second metal sheet; 35. Metal contact; 36. Second spring; 37. T-block; 38. Support plate; 39. Second roller; 40. Buzzer. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] See also Figures 1-12A forming drawing machine for metal includes a workpiece supporting and feeding frame 1, a die head frame 2, a drawing and clamping traveling frame 3 and a drawing trolley 4. The top two sides of the workpiece supporting and feeding frame 1 are connected with a first reminder mechanism and a second reminder mechanism. The first reminder mechanism includes a moving component, a sound component and two mounting plates 18. The two mounting plates 18 are symmetrically arranged. The two mounting plates 18 are respectively located on both sides of the workpiece supporting and feeding frame 1. The sound component includes a first metal sheet 33 and a second metal sheet 34. The outer wall of one of the mounting plates 18 is fixed. A transverse plate 22 is fixedly connected to the transverse plate 22, and a rotating shaft 32 is rotatably connected inside the transverse plate 22. A plurality of second metal sheets 34 are fixedly connected to the outer wall of the rotating shaft 32. The top of the transverse plate 22 is fixedly connected to a fixed cylinder 23 sleeved on the outside of the rotating shaft 32. A plurality of first metal sheets 33 corresponding to the second metal sheets 34 are fixedly connected to the inner wall of the fixed cylinder 23. A gear 25 is fixedly connected to the bottom of the rotating shaft 32. The outer wall of another mounting plate 18 is fixedly connected to a rack plate 21 meshing with the gear 25. The mounting plate 18 is connected to the moving component.

[0040] The forming drawing machine for metal of the present invention, when in use, the workpiece enters from the workpiece supporting feeder 1, passes through the die head frame 2, and is clamped and drawn by the drawing trolley 4 on the drawing and clamping carriage 3. After the workpiece moves to the outer wall of the end and disengages from the moving component in the first reminding mechanism, the two mounting plates 18 can be brought close to each other, and the mounting plate 18 drives the rack plate 21 to engage with the gear 25, so that the gear 25 rotates, driving the rotating shaft 32 to rotate in the transverse plate 22, and the rotating shaft 32 drives the multiple second metal sheets 34 on the outside to rotate. During the rotation of the second metal sheets 34, they hit the multiple first metal sheets 33 on the inner wall of the fixed cylinder 23, making a continuous hitting sound, which reminds the operator to stand on the outside of the drawing and clamping carriage 3 and prepare to receive the material for the first time;

[0041] Through the meshing of the rack plate 21 and the gear 25, the rotating shaft 32 drives the second metal sheet 34 to strike against the plurality of first metal sheets 33 in the fixed cylinder 23, producing a continuous striking sound. The short dinging sound is used to prompt the worker to return to the workstation to remove the workpiece.

[0042] As a preferred technical solution of the present invention, the moving assembly includes two symmetrically arranged L-shaped plates 7, a T-shaped slot 19 is opened on the top of the L-shaped plate 7, a moving plate 6 is slidably connected inside the L-shaped plate 7, a T-shaped block 37 corresponding to the T-shaped slot 19 is fixedly connected to the bottom of the moving plate 6, a sliding shaft 10 is slidably connected inside the moving plate 6, the outer end of the sliding shaft 10 is fixedly connected to the vertical plate 8, the outer side of the sliding shaft 10 is sleeved with a first spring 17, the inner wall of the vertical plate 8 is fixedly connected to two rectangular rods 11 that slide with the moving plate 6, the outer wall of the vertical plate 8 is fixedly installed with a first roller 9, and the two first rollers 9 are symmetrically arranged.

[0043] Specifically, during the movement of the workpiece, the end of the workpiece will separate from the first roller 9. When the two first rollers 9 lose the squeezing force of the workpiece, under the action of the first spring 17, the vertical plate 8 and the sliding shaft 10 slide on the movable plate 6, driving the two first rollers 9 to approach each other, so that the two mounting plates 18 are close to each other, and the two rectangular rods 11 move at the same time with the movement of the sliding shaft 10. The rectangular rods 11 can ensure the horizontal movement of the vertical plate 8, and the first roller 9 can play a guiding and stabilizing role when the workpiece moves.

[0044] As a preferred technical solution of the present invention, the second reminder mechanism includes a mobile component with the same structure as the first reminder mechanism, two mounting plates 18 with the same structure as the first reminder mechanism, a buzzer 40 and a trigger component, the trigger component includes two metal contacts 35, the two metal contacts 35 are symmetrically arranged and respectively fixedly mounted on the inner walls of the two mounting plates 18, the two metal contacts 35 are electrically connected to the buzzer 40, and the buzzer 40 is fixedly mounted on the top of one of the mobile plates 6 in the corresponding mobile component.

[0045] Specifically, after reminding the operator for the first time, if the operator does not respond to the first reminder in time, when the workpiece continues to move, it will gradually separate from the two first rollers 9 in the second reminder mechanism. At this time, the two first rollers 9 lose the squeezing of the workpiece, and under the action of the first spring 17, the two vertical plates 8 drive the mounting plates 18 to approach each other, so that the two metal contacts 35 contact. The contact of the two metal contacts 35 can make the buzzer 40 emit a buzzing sound. The continuous buzzing sound is used to remind the operator for the second time to stand on the outside of the drawing and clamping carriage 3 to prepare for material connection.

[0046] As a preferred technical solution of the present invention, the top of the die head frame 2 is also connected to a third reminding mechanism, which includes a moving component with the same structure as the second reminding mechanism, two mounting plates 18 with the same structure as the second reminding mechanism, a trigger component with the same structure as the second reminding mechanism, a support member and a sensing component. The trigger component is electrically connected to the controller in the drawing trolley 4 for controlling its clamping. The support member includes an L-shaped support rod 16, the cross bar of the L-shaped support rod 16 is fixedly connected to a support plate 38, and a plurality of second rollers 39 are fixedly installed on the top of the support plate 38. The sensing component includes two vertical rods 5, one of which is fixedly connected to one side of the top of the drawing and clamping carriage 3 and close to the outer wall of the die head frame 2, and the other vertical rod 5 is fixedly installed on the outer wall of the drawing trolley 4. The opposite surfaces of the two vertical rods 5 are connected to sensors.

[0047] Specifically, after the operator is reminded for the second time, there is still a situation where the operator is not at the workstation, so the workpiece continues to be pulled and moved, and gradually separates from the two second rollers 39 in the third reminding mechanism. The two first rollers 9 lose the squeezing of the workpiece, and under the action of the first spring 17, the two vertical plates 8 drive the mounting plates 18 to approach each other, so that the two metal contacts 35 contact. When the two metal contacts 35 in the third reminding mechanism contact, the clamping module of the drawing trolley 4 can be controlled to remain in a clamping state, so that the workpiece is supported by the support plate 38 and the second roller 39 after being separated from the mold in the die head frame 2. That is, after the workpiece is separated from the die head frame 2, the drawing trolley 4 stops and no longer moves, but always maintains a clamping state for the workpiece.

[0048] When the drawing trolley 4 moves, one of the vertical poles 5 in the induction assembly will move with the drawing trolley 4. When the operator needs to unload the workpiece, the sensor light curtain between the two vertical poles 5 will be cut off. When the sensor light curtain is cut off, the clamping module of the drawing trolley 4 will automatically release, so that the worker can catch the workpiece and remove the drawing clamping carriage 3.

[0049] The sensor here can be a laser beam or an infrared light curtain, just like an elevator safety light curtain or an equipment safety light curtain;

[0050] By cooperating with the sensing component and the metal contact 35 in the third reminder mechanism, the workpiece can be supported by the support plate 38 after being pulled out of the die head frame 2, and the clamping mechanism of the drawing trolley 4 can continue to clamp the workpiece, so that the workpiece will not fall on the chain in the drawing and clamping carriage 3. The sensor light curtains on the two vertical rods 5 can be cut off, so that the drawing trolley 4 can release the workpiece and facilitate the removal of the workpiece.

[0051] After the sensor light curtain is cut off, the pulling carriage 4 can delay for a few seconds before releasing the clamping module to prevent the workpiece from falling due to the operator's hand not yet taking over.

[0052] As a preferred technical solution of the present invention, installation boxes 14 are fixedly connected to both sides of the inner wall of the drawing and clamping carriage 3, and multi-stage electric push rods 15 are fixedly installed in the two installation boxes 14. The output ends of the two multi-stage electric push rods 15 are respectively fixedly connected to an integrated rod 13. A lower extension groove 20 connected to the T-slot 19 is opened in the movable plate 6 in each movable component, and a lower extension plate 12 fixedly connected to the bottom of the T-block 37 is slidably connected in the lower extension groove 20. The three lower extension plates 12 located on one side of the drawing and clamping carriage 3 are fixedly connected to the integrated rod 13, and the other integrated rod 13 is fixedly connected to the three lower extension plates 12 located on the other side of the drawing and clamping carriage 3.

[0053] Specifically, after a workpiece is pulled, the multi-stage electric push rod 15 is started, and its output end pushes the integrated rod 13, driving the multiple lower extension plates 12 located on the same side to move. Each lower extension plate 12 drives the T-block 37 and the movable plate 6 to move in the L-shaped plate 7, driving the vertical plate 8 and the first roller 9 to move to both sides, thereby facilitating the placement of the next workpiece.

[0054] As a preferred technical solution of the present invention, the outer walls of the two vertical plates 8 in the first, second and third reminder mechanisms are connected with an adjustment component for adjusting the height of the mounting plate 18, and the adjustment component includes a fixed plate 24, which is fixedly connected to the outer wall of the vertical plate 8, and a rectangular groove 27 and a side groove 31 are provided in the fixed plate 24, and the side groove 31 and the rectangular groove 27 are connected. A rectangular block 28 is slidably connected in the rectangular groove 27, and multiple rectangular blocks 28 are respectively fixedly connected to multiple mounting plates 18, and a threaded rod 29 fixedly connected to the outer wall of the rectangular block 28 is slidably connected in the side groove 31, and the outer side of the threaded rod 29 is threadedly connected to a threaded ring 30, and the inner wall of the threaded ring 30 is against the outer wall of the fixed plate 24.

[0055] As a preferred technical solution of the present invention, a second spring 36 is fixedly connected to the top surface of the inner wall of the rectangular groove 27, the other end of the second spring 36 is fixedly connected to the rectangular block 28, the top surface of the rectangular block 28 is fixedly connected to the center shaft 26, and the second spring 36 passing through the center shaft 26 is slidably connected to the fixed plate 24.

[0056] Specifically, when encountering workpieces of different diameters, the threaded ring 30 can be rotated to loosen the threaded rod 29 and move the rectangular block 28 so that it moves in the rectangular groove 27. When the rectangular block 28 moves, it drives the second spring 36 to be compressed or stretched, and at the same time drives the center shaft 26 to move. The rectangular block 28 drives the mounting plate 18 to move up and down, and the position of the rack plate 21 and the metal contact 35 can be adjusted.

[0057] A drawing process for a metal forming drawing machine comprises the following steps:

[0058] S1: The workpiece enters from the workpiece supporting and feeding rack 1, passes through the die head rack 2, and is clamped and drawn by the drawing trolley 4 on the drawing and clamping carriage 3. After the workpiece moves to the outer wall of the end and disengages from the first reminding mechanism, that is, the two first rollers 9 disengage from the outer wall of the workpiece, and the two first rollers 9 lose the squeezing force of the workpiece, under the action of the first spring 17, the vertical plate 8 and the sliding shaft 10 slide on the moving plate 6, driving the two first rollers 9 to approach each other, so that the two mounting plates 18 approach each other, so that the rack plate 21 engages with the gear 25, and the gear 25 rotates to drive the rotating shaft 32 to rotate in the horizontal plate 22, and the rotating shaft 32 drives the multiple second metal sheets 34 on the outside to rotate. During the rotation of the second metal sheet 34, the multiple first metal sheets 33 on the inner wall of the fixed cylinder 23 are hit, and a continuous hitting sound is emitted, which reminds the operator for the first time to stand on the outside of the drawing and clamping carriage 3 to prepare for receiving the material;

[0059] S2: After the operator is reminded for the first time, if the operator does not respond to the first reminder in time, as the workpiece continues to move, it will gradually separate from the two first rollers 9 in the second reminder mechanism. At this time, the two first rollers 9 lose the squeezing of the workpiece. Under the action of the first spring 17, the two vertical plates 8 drive the mounting plates 18 to move closer to each other, so that the two metal contacts 35 contact. The contact of the two metal contacts 35 can cause the buzzer 40 to emit a buzzing sound. The continuous buzzing sound is used to remind the operator for the second time to stand on the outside of the drawing and clamping carriage 3 to prepare for material connection;

[0060] S3: After the operator is reminded for the second time, there is still a situation where the operator is not at the workstation. Therefore, the workpiece continues to be pulled and moved, and gradually separates from the two first rollers 9 in the third reminder mechanism. The two first rollers 9 lose the squeezing of the workpiece. Under the action of the first spring 17, the two vertical plates 8 drive the mounting plates 18 to approach each other, so that the two metal contacts 35 contact. When the two metal contacts 35 in the third reminder mechanism contact, the trigger component is linked with the controller to control the clamping module to still maintain the clamping state, so that after the workpiece is separated from the mold in the die head frame 2, it is supported by the support plate 38 and the second roller 39. That is, after the workpiece is separated from the die head frame 2, the drawing trolley 4 stops and no longer moves, but always maintains the clamping state of the workpiece;

[0061] S4: When the drawing trolley 4 moves, one of the vertical poles 5 in the sensing assembly will move with the drawing trolley 4. When the operator needs to unload the workpiece, the sensor light curtain between the two vertical poles 5 will be cut off. When the sensor light curtain is cut off, the clamping module of the drawing trolley 4 will automatically release, so that the worker can catch the workpiece and remove the drawing clamping carriage 3;

[0062] S5: When encountering workpieces of different diameters, the threaded ring 30 can be rotated to loosen the threaded rod 29 and move the rectangular block 28 so that it moves in the rectangular groove 27. When the rectangular block 28 moves, it compresses or stretches the second spring 36 and simultaneously drives the central shaft 26 to move. The rectangular block 28 drives the mounting plate 18 to move up and down, and the position of the rack plate 21 and the metal contact 35 can be adjusted.

[0063] S6: After a workpiece is pulled, the multi-stage electric push rod 15 is started, and its output end pushes the integrated rod 13, driving the multiple lower extension plates 12 on the same side to move. Each lower extension plate 12 drives the T-block 37 and the movable plate 6 to move in the L-shaped plate 7, driving the vertical plate 8 and the first roller 9 to move to both sides, thereby facilitating the placement of the next workpiece.

[0064] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A forming and drawing machine for metal, comprising a workpiece support and feeding frame (1), a die head frame (2), a drawing and clamping carriage (3) and a drawing trolley (4), characterized in that: The top sides of the workpiece supporting and feeding rack (1) are connected with a first reminding mechanism and a second reminding mechanism, the first reminding mechanism includes a moving component, a sound component and two mounting plates (18), the two mounting plates (18) are symmetrically arranged, and the two mounting plates (18) are respectively located on both sides of the workpiece supporting and feeding rack (1), the sound component includes a first metal sheet (33) and a second metal sheet (34), the outer wall of one of the mounting plates (18) is fixedly connected to a transverse plate (22), and the transverse plate (22) is rotatably connected to a rotating shaft (32) The outer wall of the rotating shaft (32) is fixedly connected to a plurality of second metal sheets (34), the top of the transverse plate (22) is fixedly connected to a fixed cylinder (23) sleeved on the outside of the rotating shaft (32), the inner wall of the fixed cylinder (23) is fixedly connected to a plurality of first metal sheets (33) corresponding to the second metal sheets (34), the bottom of the rotating shaft (32) is fixedly connected to a gear (25), the outer wall of another mounting plate (18) is fixedly connected to a rack plate (21) meshing with the gear (25), and the mounting plate (18) is connected to the moving component.

2. A forming and drawing machine for metal according to claim 1, characterized in that: The moving assembly comprises two symmetrically arranged L-shaped plates (7), a T-shaped slot (19) is provided on the top of the L-shaped plate (7), a moving plate (6) is slidably connected inside the L-shaped plate (7), a T-shaped block (37) corresponding to the T-shaped slot (19) is fixedly connected to the bottom of the moving plate (6), a sliding shaft (10) is slidably connected inside the moving plate (6), an outer end of the sliding shaft (10) is fixedly connected to a vertical plate (8), a first spring (17) is sleeved on the outer side of the sliding shaft (10), two rectangular rods (11) that slide with the moving plate (6) are fixedly connected to the inner wall of the vertical plate (8), and a first roller (9) is fixedly installed on the outer wall of the vertical plate (8), and the two first rollers (9) are symmetrically arranged.

3. A forming and drawing machine for metal according to claim 2, characterized in that: The second reminder mechanism comprises a moving assembly having the same structure as the first reminder mechanism, two mounting plates (18) having the same structure as the first reminder mechanism, a buzzer (40) and a trigger assembly, wherein the trigger assembly comprises two metal contacts (35), the two metal contacts (35) are symmetrically arranged and respectively fixedly mounted on the inner walls of the two mounting plates (18), the two metal contacts (35) are electrically connected to the buzzer (40), and the buzzer (40) is fixedly mounted on the top of one of the moving plates (6) in the corresponding moving assembly.

4. A forming and drawing machine for metal according to claim 3, characterized in that: The top of the die head frame (2) is also connected to a third reminder mechanism, which includes a moving component with the same structure as the second reminder mechanism, two mounting plates (18) with the same structure as the second reminder mechanism, a trigger component, a support member and a sensing component with the same structure as the second reminder mechanism, wherein the trigger component is electrically connected to a controller in the drawing trolley (4) for controlling its clamping, the support member includes an L-shaped support rod (16), the cross bar of the L-shaped support rod (16) is fixedly connected to a support plate (38), and a plurality of second rollers (39) are fixedly installed on the top of the support plate (38), and the sensing component includes two vertical rods (5), one of which is fixedly connected to one side of the top of the drawing and clamping trolley frame (3) and close to the outer wall of the die head frame (2), and the other vertical rod (5) is fixedly installed on the outer wall of the drawing trolley (4), and the opposite surfaces of the two vertical rods (5) are connected to sensors.

5. A forming and drawing machine for metal according to claim 4, characterized in that: Both sides of the inner wall of the drawing and clamping carriage (3) are fixedly connected with mounting boxes (14), and multi-stage electric push rods (15) are fixedly installed in the two mounting boxes (14). The output ends of the two multi-stage electric push rods (15) are respectively fixedly connected with an integrated rod (13). A lower extension groove (20) connected to the T-slot (19) is provided in the movable plate (6) of each movable assembly. A lower extension plate (12) fixedly connected to the bottom of the T-block (37) is slidably connected in the lower extension groove (20). The three lower extension plates (12) located on one side of the drawing and clamping carriage (3) are fixedly connected to one of the integrated rods (13), and the other integrated rod (13) is fixedly connected to the three lower extension plates (12) located on the other side of the drawing and clamping carriage (3).

6. A forming and drawing machine for metal according to claim 5, characterized in that: The outer walls of the two vertical plates (8) in the first, second and third reminder mechanisms are connected to an adjustment assembly for adjusting the height of the mounting plate (18), the adjustment assembly comprising a fixed plate (24), the fixed plate (24) being fixedly connected to the outer wall of the vertical plate (8), a rectangular groove (27) and a side groove (31) being provided in the fixed plate (24), the side groove (31) and the rectangular groove (27) being connected, a rectangular block (28) being slidably connected in the rectangular groove (27), a plurality of rectangular blocks (28) being fixedly connected to a plurality of mounting plates (18) respectively, a threaded rod (29) being slidably connected in the side groove (31) and being fixedly connected to the outer wall of the rectangular block (28), the outer side of the threaded rod (29) being threadedly connected to a threaded ring (30), the inner wall of the threaded ring (30) being abutted against the outer wall of the fixed plate (24).

7. A forming and drawing machine for metal according to claim 6, characterized in that: A second spring (36) is fixedly connected to the top surface of the inner wall of the rectangular groove (27), the other end of the second spring (36) is fixedly connected to the rectangular block (28), the top surface of the rectangular block (28) is fixedly connected to the central shaft (26), and the second spring (36) passing through the central shaft (26) is slidably connected to the fixed plate (24).

8. A drawing process for a metal forming and drawing machine according to claim 7, comprising the following steps: S1: The workpiece enters from the workpiece support feeding frame (1), passes through the die head frame (2), and is clamped and pulled by the drawing trolley (4) on the drawing and clamping carriage (3). After the workpiece moves to the outer wall of the end and disengages from the first reminder mechanism, the two first rollers (9) disengage from the outer wall of the workpiece. After the two first rollers (9) lose the squeezing force of the workpiece at the same time, under the action of the first spring (17), the vertical plate (8) and the sliding shaft (10) slide on the moving plate (6), driving the two first rollers (9) to approach each other. The two mounting plates (18) are brought close to each other, so that the rack plate (21) and the gear (25) are meshed. The gear (25) rotates to drive the rotating shaft (32) to rotate in the transverse plate (22). The rotating shaft (32) drives the plurality of second metal sheets (34) on the outside to rotate. During the rotation of the second metal sheets (34), the plurality of first metal sheets (33) on the inner wall of the fixed cylinder (23) are struck, and a continuous striking sound is emitted, which reminds the operator to stand on the outside of the drawing and clamping carriage (3) to prepare for the material connection. S2: After the operator is reminded for the first time, if the operator does not respond to the first reminder in time, when the workpiece continues to move, it will gradually separate from the two first rollers (9) in the second reminder mechanism. At this time, the two first rollers (9) lose the squeezing of the workpiece. Under the action of the first spring (17), the two vertical plates (8) drive the mounting plate (18) to approach each other, so that the two metal contacts (35) are in contact. The contact of the two metal contacts (35) can cause the buzzer (40) to emit a buzzing sound. The continuous buzzing sound is used to remind the operator for the second time to stand on the outside of the drawing and clamping carriage (3) to prepare for material connection. S3: After the operator is reminded for the second time, the operator is still not at the workstation. Therefore, the workpiece continues to be pulled and moved, and gradually separates from the two first rollers (9) in the third reminder mechanism. The two first rollers (9) lose the squeezing of the workpiece. Under the action of the first spring (17), the two vertical plates (8) drive the mounting plate (18) to approach each other, so that the two metal contacts (35) contact. When the two metal contacts (35) in the third reminder mechanism contact, the trigger component is linked with the controller to control the clamping module to still maintain the clamping state, so that the workpiece is supported by the support plate (38) and the second roller (39) after being separated from the mold in the die head frame (2). That is, after the workpiece is separated from the die head frame (2), the pulling trolley (4) stops and no longer moves, but always maintains the clamping state of the workpiece; S4: When the drawing trolley (4) moves, one of the vertical rods (5) in the induction assembly moves with the drawing trolley (4). When the operator needs to unload the workpiece, the sensor light curtain between the two vertical rods (5) is cut off. When the sensor light curtain is cut off, the clamping module of the drawing trolley (4) is automatically released, so that the worker can catch the workpiece and remove the drawing clamping carriage (3); S5: When encountering workpieces of different diameters, the threaded ring (30) can be rotated to loosen the threaded rod (29) and move the rectangular block (28) so that it moves in the rectangular groove (27). When the rectangular block (28) moves, it drives the second spring (36) to be compressed or stretched, and at the same time drives the central shaft (26) to move. The rectangular block (28) drives the mounting plate (18) to move up and down, and the position of the rack plate (21) and the metal contact (35) can be adjusted; S6: After a workpiece is pulled, the multi-stage electric push rod (15) is started, and its output end pushes the integrated rod (13), driving the multiple lower extension plates (12) located on the same side to move. Each lower extension plate (12) drives the T-shaped block (37) and the movable plate (6) to move inside the L-shaped plate (7), driving the vertical plate (8) and the first roller (9) to move to both sides, thereby facilitating the placement of the next workpiece.

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