A fire extinguisher head stamping and forming machine

Abstract

The present invention discloses a stamping and forming machine for a fire extinguisher head, which relates to the field of stamping equipment. The aim is to solve the problems that when the stamping equipment for the fire extinguisher head performs stamping work, it is difficult to demold the stamped parts and the coordination ability between the stamping equipment and the material receiving equipment is poor, which severely restricts the improvement of production efficiency and factory production capacity. It includes a frame, the frame is fixedly connected with a load-bearing frame, the load-bearing frame is fixedly connected with a load-bearing plate, a stamping hole is provided on the load-bearing plate, an electromagnetic punch is arranged above the stamping hole, a mold sleeve is fixedly connected in the stamping hole, the mold sleeve is fixedly connected with a load-bearing rod, a demolding assembly is arranged on the load-bearing rod, a blanking plate is arranged on the side of the stamping hole, a blanking chute is arranged below the blanking plate, a collection box which is matched with the blanking plate is arranged on the left side of the blanking chute, the collection box is fixedly connected with a material receiving frame, and a material receiving roller is rotatably connected to the material receiving frame. The advantages are that through the cooperation of the demolding assembly and the ventilation holes, the vacuum adsorption effect generated by stamping is avoided, the demolding difficulty is reduced, and material jamming is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping equipment, and more particularly to a stamping and forming machine for a fire extinguisher head. Background Art

[0002] As a key safety component of a fire extinguisher, the fire extinguisher head needs to be processed from a metal sheet into a columnar cover structure in one stamping process. For the design of the traditional stamping die for the columnar head, a straight-cylinder forming die cavity is adopted. Since the head structure is a deep-cavity columnar shape, during the stamping process, the metal sheet undergoes severe plastic deformation in the die, resulting in a great frictional force between the outer wall of the formed head and the inner wall of the die. In addition, due to the lack of a demolding taper in the columnar structure, the stamped part is easily stuck in the die due to material springback or vacuum adsorption effect (the air pressure difference inside and outside the die cavity after stamping). Workers need to frequently manually knock or use auxiliary tools for demolding, which not only increases the single-piece processing time (about 15 - 20 seconds per piece), but also causes increased wear of the die and shortens the equipment life. However, during the forced demolding process, cracks or deformations are likely to occur at the edge of the head due to uneven stress, and the scrap rate is as high as 8% - 12%. In order to reduce the scrap rate, some enterprises have to adopt a less efficient multi-stamping process, further pushing up the production cost.

[0003] In addition, in the existing production line, after the die cuts the metal sheet for a long time, its cutting edge will gradually wear. After the cutting edge of the die wears, on the one hand, the size of the punched part may exceed the design tolerance range, resulting in unqualified parts, and on the other hand, the wear of the cutting edge may also cause changes in the shape of the punched part, such as uneven edges and increased burrs. In either case, this kind of wear will cause changes in the punching size, and the change in the punching size will further increase the risk of material jamming of the stamped part after stamping. Summary of the Invention

[0004] In view of the above situation, to overcome the defects of the prior art, the present invention provides a stamping and forming machine for a fire extinguisher head, which effectively solves the problems that the stamping equipment for the fire extinguisher head has difficult demolding of the stamped part and poor coordination ability between the stamping equipment and the material receiving equipment during the stamping operation, which seriously restricts the improvement of production efficiency and factory production capacity.

[0005] To achieve the above object, the present invention provides the following technical solutions: The present invention includes a frame, a load-bearing frame is fixedly connected to the side of the frame, a load-bearing plate is fixedly connected to the load-bearing frame, a punching hole is provided on the load-bearing plate, an electromagnetic punch is arranged above the punching hole, the electromagnetic punch is vertically slidably connected to the frame, a pressure plate is slidably connected to the outside of the electromagnetic punch, a stepped hole for the electromagnetic punch to pass through is provided on the pressure plate, a punch grinding assembly is slidably connected in the stepped hole, a die sleeve is fixedly connected in the punching hole, a load-bearing rod is fixedly connected between the die sleeve and the load-bearing frame, a demoulding assembly is arranged below the die sleeve, a blanking plate is arranged on the side of the punching hole, the blanking plate is horizontally slidably connected above the load-bearing plate, and the blanking plate moves synchronously with the electromagnetic punch;

[0006] The punch grinding assembly includes a fixing plate, the fixing plate is fixedly connected to the pressure plate, a first fixing ring is fixedly connected below the fixing plate, a plurality of equally angularly distributed grinding blocks are slidably connected in the first fixing ring, the grinding blocks abut against the outside of the electromagnetic punch, a limiting plate is fixedly connected to the grinding block, a second fixing ring is arranged outside the limiting plate, an elastic resetting member is installed between the second fixing ring and the limiting plate, and the second fixing ring is fixedly connected to the fixing plate.

[0007] Preferably, the demoulding assembly includes a one-way air charging pipe, a piston column is fixedly connected to the one-way air charging pipe, an annular cavity is arranged below the die sleeve, the piston column is slidably connected in the cavity, a ventilation hole is arranged on the die sleeve above the cavity, the piston column is slidably connected to the load-bearing rod, the piston column is fixedly connected to a first guide rod, a guide hole for the first guide rod to slide is formed on the load-bearing frame, a sliding sleeve is fixedly connected to the middle of the first guide rod, the sliding sleeve is slidably connected to the load-bearing rod, and a first spring is sleeved on the first guide rod between the sliding sleeve and the load-bearing frame.

[0008] Preferably, the elastic resetting member includes a second guide rod, one end of the second guide rod is fixedly connected to the limiting plate, the other end of the second guide rod is slidably connected to the second fixing ring, a reset spring is sleeved on the second guide rod inside the second fixing ring, a groove for cooperating with the die sleeve is arranged in the electromagnetic punch, an electromagnet is fixedly connected in the groove, a lifting platform is fixedly connected to the outside of the electromagnetic punch, a sliding rod penetrates through the side of the lifting platform, the lower end of the sliding rod is fixedly connected to the pressure plate, and a second spring is sleeved on the sliding rod between the pressure plate and the lifting platform.

[0009] Preferably, a pull rod is hinged to the side of the lifting platform, the other end of the pull rod is hinged to a support rod, the support rod is fixedly connected to the blanking plate, a guide frame is slidably connected to the lower end of the blanking plate, and the guide frame is fixedly connected above the load-bearing frame.

[0010] Preferably, two feeding pressure rollers that rotate synchronously are provided on both sides of the load-bearing plate. The feeding pressure rollers are located below the guiding frame. The two feeding pressure rollers are respectively located on the left and right sides of the punching holes, and a first pulley group is connected between the two feeding pressure rollers.

[0011] Preferably, a blanking chute is provided below the blanking plate. A collection box that cooperates with the blanking plate is provided on the left side of the blanking chute. The collection box is fixedly connected to a material receiving frame. A material receiving roller is rotatably connected to the material receiving frame. The feeding pressure roller includes a first pressure roller and a second pressure roller. A first gear is coaxially and fixedly connected to the first pressure roller. A second gear is meshed with the right side of the first gear. The second gear is fixedly connected to a cleaning roller. A third gear is fixedly connected to one end of the second pressure roller. The third gear is meshed with a fourth gear. The fourth gear is fixedly connected to a first steel plate cutting wheel.

[0012] Preferably, a second pulley group is fixedly connected to the other end of the second pressure roller. The second pulley group is fixedly connected to a second steel plate cutting wheel. A third pressure roller is provided on the left side of the second steel plate cutting wheel. The third pressure roller is located on the right side of the blanking chute.

[0013] Preferably, the material receiving roller includes a first roller body and a second roller body. Fourth pressure rollers are provided below both the first roller body and the second roller body. The fourth pressure rollers are rotatably connected to the material receiving frame. A material guiding groove that cooperates with the first roller body and the second roller body is provided on the material receiving frame. The width of the first roller body is the same as the width of the blanking chute.

[0014] Preferably, a first telescopic rod is provided above the blanking chute. The first telescopic rod is fixedly connected to the load-bearing frame. A first baffle is fixedly connected to the first telescopic rod. The front side of the first baffle is flush with the front side of the blanking chute. A guiding roller is provided below the blanking chute. The guiding roller is rotatably connected to the load-bearing frame.

[0015] Preferably, a second telescopic rod is provided at the rear side of the load-bearing plate. A second baffle is fixedly connected to the front end of the second telescopic rod. A guiding pressure rod is hinged to the front side of the load-bearing plate. An adjusting rod is hinged to the middle of the guiding pressure rod. The other end of the adjusting rod is hinged to the load-bearing plate. A rotating wheel is rotatably connected to the end of the guiding pressure rod.

[0016] Compared with the prior art, the prominent advantages of the present invention are:

[0017] In the present invention, the punch grinding assembly and the demoulding assembly work together to perform punching and demoulding operations. The punch grinding assembly ensures the rapid and accurate cutting of the steel plate by the electromagnetic punch, avoiding warping or broken lines of the cut steel plate, ensuring the quality of the subsequent stamping products. The demoulding assembly ensures the smooth demoulding of the stamping parts, avoiding the situation of material jamming in the die seat, and improving the efficiency of stable punching of the equipment.

[0018] In the present invention, the demoulding assembly offsets the adsorption effect of the stamping part during the stamping process, balances the internal and external air pressures of the stamping part, and provides an upward acting force for the stamping part through the cooperation of the cavity, the piston column, the one-way charging pipe and the air permeable holes, ensuring the smooth demoulding of the stamping part.

[0019] In the present invention, the blanking plate and the electromagnetic punch cooperate with each other, without the need for additional manual intervention during operation, reducing the work intensity of the staff and improving the industrial automation efficiency and the production capacity of the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the overall front structure of the present invention.

[0022] Figure 3 It is a schematic diagram of the connection structure on the upper side of the load-bearing plate of the present invention.

[0023] Figure 4 It is a schematic diagram of the axonometric connection structure of the lifting platform of the present invention.

[0024] Figure 5 It is a schematic diagram of the connection structure of the sliding rod of the present invention.

[0025] Figure 6 It is a schematic diagram of the connection structure between the pressure plate and the fixed plate of the present invention.

[0026] Figure 7 It is a schematic diagram of the sectional structure of the pressure plate of the present invention.

[0027] Figure 8 It is a schematic diagram of the connection structure of the grinding block of the present invention.

[0028] Figure 9 It is a schematic diagram of the front sectional structure of the mold sleeve of the present invention.

[0029] Figure 10 It is a schematic diagram of the exploded structure at the bottom of the mold sleeve and the demoulding assembly of the present invention.

[0030] Figure 11 It is a schematic diagram of the connection structure of the first pressure roller of the present invention.

[0031] Figure 12 It is a schematic diagram of the connection structure of the second pressure roller of the present invention.

[0032] Figure 13 It is a schematic diagram of the structure of the blanking groove of the present invention.

[0033] Figure 14 It is a schematic diagram of the connection structure between the material receiving rack and the load-bearing rack of the present invention.

[0034] Figure 15 This is a schematic diagram of the overall structure of the material receiving rack of the present invention.

[0035] Figure 16 This is a schematic diagram of the connection structure of the blanking plate of the present invention.

[0036] Figure 17 This is a schematic diagram of the forward connection structure of the electromagnetic punch of the present invention.

[0037] Reference numerals in the figure: 1, frame; 2, load-bearing frame; 3, load-bearing plate; 4, punching hole; 5, electromagnetic punch; 6, die sleeve; 7, load-bearing rod; 8, demoulding assembly; 801, one-way inflation tube; 802, piston column; 803, cavity; 804, ventilation hole; 805, first spring; 806, first guide rod; 807, sliding sleeve; 9, blanking plate; 10, blanking chute; 11, collection box; 12, material receiving rack; 13, material receiving roller; 1301, first roller body; 1302, second roller body; 14, groove; 15, lifting platform; 16, sliding rod; 17, pressing plate; 18, second spring; 19, stepped hole; 20, pull rod; 21, support rod; 22, guide frame; 23, feeding pressure roller; 2301, first pressure roller; 2302, second pressure roller; 24, first pulley set; 25, first gear; 26, second gear; 27, cleaning roller; 28, third gear; 29, fourth gear; 30, first steel plate cutting wheel; 31, second pulley set; 32, second steel plate cutting wheel; 33, third pressure roller; 34, fourth pressure roller; 35, material guiding groove; 36, first telescopic rod; 37, first baffle; 38, guiding roller; 39, second telescopic rod; 40, second baffle; 41, guiding pressure rod; 42, adjusting rod; 43, runner; 44, punch polishing assembly; 4401, fixing plate; 4402, first fixing ring; 4403, polishing block; 4404, limiting plate; 4405, second fixing ring; 4406, second guide rod; 4407, return spring. Detailed implementation manners

[0038] Next, in combination with the drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0039] Please refer to the attached Figure 1-16, a stamping and forming machine for a fire extinguisher head in this embodiment: It includes a frame 1, a load-bearing frame 2 is fixedly connected to the side of the frame 1, a load-bearing plate 3 is fixedly connected to the load-bearing frame 2, a stamping hole 4 is provided on the load-bearing plate 3, an electromagnetic punch 5 is arranged above the stamping hole 4, the electromagnetic punch 5 is vertically slidably connected to the frame 1, a pressure plate is slidably connected to the outside of the electromagnetic punch, a stepped hole for the electromagnetic punch to pass through is provided on the pressure plate, a punch grinding assembly 44 is slidably connected in the stepped hole, a die sleeve 6 is fixedly connected in the stamping hole 4, a load-bearing rod 7 is fixedly connected between the die sleeve 6 and the load-bearing frame 2, a demolding assembly 8 is arranged on the load-bearing rod 7, a blanking plate 9 is arranged on the side of the stamping hole 4, the blanking plate 9 is horizontally slidably connected above the load-bearing plate 3, the blanking plate 9 moves synchronously with the electromagnetic punch 5, a blanking chute 10 is arranged below the blanking plate 9, a collection box 11 which cooperates with the blanking plate 9 is arranged on the left side of the blanking chute 10, the collection box 11 is fixedly connected with a material receiving frame 12, and a material receiving roller 13 is rotatably connected to the material receiving frame 12.

[0040] The frame 1 is a support component for the electromagnetic punch 5. The structure of the frame 1 is the same as that of the frame of an existing stamping machine. At the same time, a power source, a transmission system, and a control system are also provided inside the frame 1. The power source provides power for the transmission system, the transmission system drives the vertical lifting of the electromagnetic punch 5, and the control system controls the synchronous cooperation between the electromagnetic punch 5 and the blanking steel plate. At the same time, the control system also controls the energization and de-energization of the electromagnet inside the electromagnetic punch 5. The load-bearing frame 2 is located on the front side of the frame 1. The load-bearing plate 3 on the load-bearing frame 2 is placed horizontally. The load-bearing plate 3 is used for supporting the blanking steel plate. The blanking steel plate enters the load-bearing plate 3 from the right side of the load-bearing plate 3 and moves from right to left on the load-bearing plate 3. After the blanking steel plate moves to the position of the punching hole 4, the electromagnetic punch 5 presses downward to complete the cutting of the blanking steel plate. The cut steel plate is continuously pressed by the electromagnetic punch 5 onto the die sleeve 6. Then, under the pressing action of the electromagnetic punch 5, the steel plate forms a stamped part sleeved on the die sleeve 6. The structure of the fire extinguisher head is a columnar cover structure. After the electromagnetic punch 5 presses the steel plate onto the die sleeve 6, there may be a situation where the stamped part gets stuck on the die sleeve 6. To avoid the jamming of the die sleeve 6, a demoulding component 8 is installed on the die sleeve 6 in this application. After the electromagnetic punch 5 finishes stamping, the demoulding component 8 and the electromagnet inside the electromagnetic punch 5 provide an upward acting force for the stamped part synchronously to complete the smooth demoulding of the stamped part. After demoulding, as the electromagnetic punch 5 moves upward, the blanking plate 9 on the side of the electromagnetic punch 5 moves synchronously with the electromagnetic punch 5. When the electromagnetic punch 5 moves upward, the blanking plate 9 moves relatively to the right of the electromagnetic punch 5. When the electromagnetic punch 5 moves to the moving height, a part of the blanking plate 9 is just located below the electromagnetic punch 5. At this time, the power supply of the electromagnet inside the electromagnetic punch 5 can be disconnected. The stamped part falls onto the blanking plate 9 under the action of gravity. Then, when the electromagnetic punch 5 moves downward for the next blanking, the blanking plate 9 moves to the left side of the electromagnetic punch 5, and the blanking plate 9 will not interfere with the vertical movement of the electromagnetic punch 5. The stamped parts on the blanking plate 9 finally converge into the collection box 11 for unified storage. After blanking, there will be waste residues on the steel plate. The residual waste steel plate will continue to move left along the load-bearing plate 3, and then the waste steel plate will move through the blanking chute 10 to the lower part of the load-bearing plate 3. Then, the waste steel plate is wound around the winding roller 13 of the material receiving frame 12.

[0041] The punch grinding assembly 44 includes a fixing plate 4401 which is fixedly connected to the pressure plate. A first fixing ring 4402 is fixedly connected below the fixing plate 4401. A plurality of equally-angularly distributed grinding blocks 4403 are slidably connected within the first fixing ring 4402. The grinding blocks 4403 abut against the outer side of the electromagnetic punch. A limiting plate 4404 is fixedly connected to the grinding block 4403. A second fixing ring 4405 is provided outside the limiting plate 4404. An elastic reset member is installed between the second fixing ring 4405 and the limiting plate 4404. The second fixing ring 4405 is fixedly connected to the fixing plate 4401.

[0042] The diameter of the fixing plate 4401 is larger than the aperture of the stepped hole 19. The fixing plate 4401 is installed above the pressure plate by screws. The diameter of the circular hole in the middle of the fixing plate 4401 is the same as the outer diameter of the electromagnetic punch 5. A first fixing ring 4402 and a second fixing ring 4405 are connected below the fixing plate 4401. The first fixing ring 4402 and the second fixing ring 4405 are located within the stepped hole 19. There are four equally-angularly distributed grooves on the first fixing ring 4402. The grinding blocks 4403 are slidably installed in the grooves. In the initial state, the bottom surface of the grinding block 4403 is flush with the bottom surface of the electromagnetic punch 5. A tapered groove is provided at the position of the contact surface between the grinding block 4403 and the electromagnetic punch 5. The side of the grinding block 4403 is an arc surface, so that the grinding block 4403 can better fit with the electromagnetic punch. During the punching process, the electromagnetic punch 5 will move downward relative to the grinding block 4403, and the grinding block 4403 grinds the side surface of the electromagnetic punch 5 to ensure the smooth punching of the electromagnetic punch 5 on the steel plate. The elastic reset member has an elastic force towards the inside on the grinding block 4403. The limiting plate 4404 restricts the movement of the grinding block 4403 towards the center. Under the action of the limiting plate 4404, the inner side edge of the grinding block 4403 just contacts the outer side of the electromagnetic punch 5. Under the action of the limiting plate 4404 and the elastic reset member, it can ensure that the grinding block 4403 grinds the electromagnetic punch 5, and at the same time, it does not affect the downward movement of the electromagnetic punch. The elastic reset member is composed of a second guiding rod 4406 and a reset spring 4407. The reset spring 4407 is sleeved on the second guiding rod 4406. The outside of the reset spring 4407 is the second fixing ring 4405. The second fixing ring 4405 provides a reaction force for the reset spring 4407. In addition, an arc-shaped slot hole is provided on the fixing plate 4401. When installing the fixing plate 4401, the installation angle of the fixing plate 4401 can be adjusted, so that all four sides of the electromagnetic punch 5 can be ground.

[0043] One end of the one-way air charging pipe 801 in the demolding assembly 8 is connected to an air pump. The other end of the one-way air charging pipe 801 is inserted into the cavity 803 of the mold sleeve 6 through a piston column 802. The air vent hole 804 above the cavity 803 penetrates through the upper part of the mold sleeve 6. When the steel plate is stamped on the mold sleeve 6, the air between the mold sleeve 6 and the steel plate will be squeezed out, and an approximately airtight low-pressure space is formed between the two. At this time, the external air pressure is greater than the air pressure inside the steel plate and the mold sleeve 6, and the electromagnet in the electromagnetic punch 5 is not easy to separate the stamped part from the mold sleeve 6. At this time, the cavity is inflated through the air pump and the one-way ventilation pipe. The gas in the cavity 803 flows between the stamped part and the mold sleeve 6 through the air vent hole 804, so as to balance the internal and external air pressures. At the same time, the air vent hole 804 is located directly above the mold sleeve 6. Through the high-pressure ventilation of the air pump, the air flow also has an upward thrust on the stamped part. By balancing the air flow and increasing the downward thrust, the demolding difficulty of the stamped part and the mold sleeve 6 is simplified, and the situation of jamming of the mold sleeve 6 is avoided; further, during the stamping process of the mold sleeve 6 and the steel plate, in order to better and faster discharge the air between the two and make them fit better, the piston column 802 below the cavity 803 can slide vertically. The piston column 80② is sleeved on the load-bearing rod 7, and the elastic member on the load-bearing rod 7 has an upward thrust on the piston column 802. In this way, the air between the steel plate and the mold sleeve 6 can enter the cavity 803 downward through the air vent hole 804, and the air in the cavity 803 can squeeze the piston column 802 and the elastic member downward, which can avoid the situation that the mold sleeve 6 and the steel plate do not fit completely due to the air volume, and ensure the quality of the finished stamped part.

[0044] The elastic member on the load-bearing rod 7 has a vertically upward elastic force on the piston column 802 to ensure that the upper end of the piston column 802 is located in the cavity 803. The elastic member is preferably a first spring 805. The first spring 805 is installed on the first guide rod 806. There are two first guide rods 806, and the two first guide rods 806 are respectively located on the left and right sides of the load-bearing rod 7. The lower ends of the two first guide rods 806 penetrate into the guide holes of the bearing frame. The lower end of the first spring is located above the bearing frame. Through the stable bearing frame, the upward elastic force of the first spring is ensured. A sliding sleeve 807 is also slidably connected to the load-bearing rod 7. The sliding sleeve 807 and the first guide rod 806 play a guiding role in the vertical movement of the piston column 802 to ensure the vertical movement of the piston column 802.

[0045] The groove 14 in the electromagnetic punch 5 has the same outer shape structure as the die sleeve 6, so that during stamping, the blanking steel plate can be ensured to be closely attached to the die sleeve 6, achieving the purpose of precise parts manufacturing. The electromagnetic punch 5 is driven by the lifting table 15, and the lifting table 15 is controlled by the power system in the frame 1. The pressure plate 17 below the lifting table 15 is used to fix the steel plate. The initial height of the pressure plate 17 is lower than the height of the electromagnetic punch 5. When the lifting table 15 moves downward, the pressure plate 17 contacts the blanking steel plate first. The lifting table 15 drives the electromagnetic punch 5 to continue moving downward by compressing the second spring 18. There is a stepped hole 19 on the pressure plate 17 for the electromagnetic punch 5 to pass through, which can avoid the interference of the pressure plate 17 on the electromagnetic punch 5. At the same time, the fixation of the blanking steel plate by the pressure plate 17 facilitates the blanking of the steel plate by the electromagnetic punch 5, avoiding the extrusion deformation of the steel plate at the indentation. There is a slide bar 16 in the middle of the second spring 18. The slide bar is a cylindrical rod, and the outer diameter of the slide bar is slightly smaller than the inner diameter of the second spring. The upper end of the slide bar is slidably connected to the lifting table, and there is a retaining piece at the upper end of the slide bar above the lifting table, which limits the maximum distance of the pressure plate relative to the lifting table. When the pressure plate moves upward relative to the lifting table, the second spring contracts along the linear direction of the slide bar. In this way, the slide bar 16 can prevent the second spring 18 from being bent and deformed, and at the same time, the second spring 18 plays a guiding role in the sliding of the pressure plate 17 and the lifting table 15. At the same time, a buffer column is installed at the bottom of the lifting table 15. The buffer column is made of rubber, which reduces the impact between the lifting table 15 and the bearing plate 3 after blanking.

[0046] The vertical movement of the lifting table 15 drives the electromagnetic punch 5 to punch the steel plate on the one hand, and on the other hand, the movement of the lifting table 15 drives the left and right sliding of the blanking plate 9 through the pull rod 20. The lifting table 15 is provided with a cylindrical rod hinged to the pull rod 20, and the other end of the pull rod 20 is hinged to the support rod 21. The support rod 21 is installed above the blanking plate 9, so that the movement of the pull rod 20 will not interfere with the left and right translation of the blanking plate 9. The blanking plate 9 is horizontally limited by the guide frame 22 below. The blanking frame is placed obliquely, so that the right side of the blanking plate 9 is higher than the left side of the blanking plate 9, giving the blanking plate 9 a certain slope. In this way, the stamped parts on the blanking plate 9 can slide to the left under the action of gravity. The collection box 11 on the left side of the blanking plate 9 is used to collect the stamped parts. The height of the collection box 11 is lower than that of the blanking plate 9, which not only ensures the collection of the stamped parts, but also does not affect the horizontal translation of the blanking plate 9; such as Figure 12As shown, when the lifting table 15 moves upward, the upward movement of the lifting table 15 indicates that the electromagnetic punch 5 has completed punching. There is a stamped part magnetically attracted inside the electromagnetic punch 5. The upward movement of the lifting table 15 drives the right end of the pull rod 20 upward. The upward movement of the right end of the pull rod 20 drives the left end of the pull rod 20 to move to the right. The movement of the pull rod 20 to the right drives the support rod 21 and the blanking plate 9 to move to the right. Thus, after the electromagnetic punch 5 rises, the blanking plate 9 is moved below the electromagnetic punch 5, so that the stamped part can be unloaded. After that, when the lifting table 15 moves downward, the pull rod 20 pushes the blanking plate 9 to slide in the reverse direction. The reverse sliding of the blanking plate 9 helps the stamped part to slide down quickly, avoiding the accumulation of stamped parts on the blanking plate 9.

[0047] Feeding pressure rollers 23 are installed on the left and right sides of the load-bearing plate 3. The distance between the feeding pressure rollers 23 and the load-bearing plate 3 is equivalent to the thickness of the steel plate. The steel plate is placed in a coil before entering the load-bearing plate 3 and needs to be uncoiled during use. In this way, the steel plate will be dragged and deformed during uncoiling. The feeding pressure roller 23 on the right side squeezes the steel plate, which can keep the steel plate flat and ensure the quality of the subsequent stamped part products. The feeding pressure roller 23 on the right side of the load-bearing plate 3 ensures that the punching waste is kept in contact with the load-bearing plate 3, avoiding the steel plate from tilting upward during movement; the rotation directions and speeds of the two feeding pressure rollers 23 are kept consistent, and they are connected by a first belt pulley group 24. The first belt pulley group 24 is composed of two belt pulleys and a connecting belt, which can ensure the synchronous rotation of the two feeding pressure rollers 23.

[0048] Furthermore, when punching the steel plate, the width of the steel plate is much larger than the width of the punched part. After the steel plate is punched, the first steel plate cutting wheel 30 is used to cut the steel plate. The first steel plate cutting wheel 30 is located on the left side of the second pressure roller 2302. The third gear 28 on the second pressure roller 2302 meshes with the fourth gear 29 on the first steel plate cutting wheel 30. In this way, when the second pressure roller 2302 rotates, the first steel plate cutting wheel 30 rotates synchronously. The waste steel plate is cut off from the complete steel plate by the rotating first steel plate cutting wheel 30. Thus, the waste steel plate moves leftward from the blanking chute 10, and the complete steel plate continues to move leftward on the load-bearing plate 3; a cleaning roller 27 is provided on the right side of the first pressure roller 2301. The second gear 26 on the cleaning roller 27 meshes with the first gear 25 on the first pressure roller 2301. Under the action of the first gear 25 and the second gear 26, the cleaning roller 27 rotates counterclockwise, so that the cleaning roller 27 cleans the upper part of the steel plate, avoiding small particles on the surface of the steel plate from affecting the punching quality during punching.

[0049] Further, to ensure the cutting and separation of the steel plate, a set of second steel plate cutting wheels 32 is additionally installed on the left side of the first steel plate cutting wheel 30. A second pulley group 31 is installed between the second steel plate cutting wheels 32 and the second pressure roller 2302. Similar to the first pulley group 24, the second pulley group 31 is also composed of two pulleys and a connecting belt. One of the two pulleys is installed on the second steel plate cutting wheel 32, and the other is installed on the second pressure roller 2302. The installation orientation of the pulley on the second pressure roller 2302 is different from that of the third gear 28. The rotation of the second pressure roller 2302 drives the second steel plate cutting wheel 32 to rotate. The second steel plate cutting wheel 32 acts on the steel plate again along the cutting line of the first steel plate cutting wheel 30 to ensure the cutting and separation of the steel plate and avoid incomplete cutting of the steel plate. There is a third pressure roller 33 on the left side of the second steel plate cutting wheel 32. The third pressure roller 33 has no power source and is rotatably connected to the load-bearing frame 2. The third pressure roller 33 serves to prevent the steel plate from warping. At the same time, under the pressing of the third pressure roller 33 and the second pressure roller 2302 on the steel plate, it is convenient for the first steel plate cutting wheel 30 and the second steel plate cutting wheel 32 to cut and divide the steel plate.

[0050] On the material receiving frame 12, there are a rotating first roller body 1301 and a second roller body 1302. The cooperation mode between the first roller body 1301 and the second roller body 1302 and the material receiving frame 12 is the same as the structure of the existing steel coil winding machine. The first roller body 1301 is located directly to the left of the blanking chute 10. The waste sheet material moves leftward from the blanking chute 10 along the lower direction of the collection box 11, and then the waste sheet material is wound around the first roller body 1301 after passing through the fourth pressure roller 34, so that the waste sheet material can be bundled for subsequent waste treatment. The second roller body 1302 is used to wind the cut finished sheet material. The fourth pressure roller 34 and the guide chute 35 in front of the first roller body 1301 and the second roller body 1302 play a guiding role for the steel plate to ensure the smooth winding work of the first roller body 1301 and the second roller body 1302.

[0051] A first telescopic rod 36 is provided on the blanking chute 10. The first baffle 37 in front of the first telescopic rod 36 limits the rear side of the divided steel plate. At the same time, the first telescopic rod 36 straddles above the blanking chute 10, so as to provide an upper shield for the steel plate in the blanking chute 10, causing the steel plate to fall downward in the blanking chute 10. The guide roller 38 is located below the blanking chute 10. The guide roller 38 provides a lateral support for the blanking steel plate, causing the steel plate to extend along an arc towards the first roller body 1301.

[0052] When the steel plate is transferred, to ensure that the electromagnetic punch 5 punches the steel plate at the same horizontal position, a second telescopic rod 39 is additionally installed on the rear side of the load-bearing plate 3. The second baffle 40 in front of the second telescopic rod 39 closely adheres to the upper arm of the load-bearing plate 3. At the same time, a guide pressure rod 41 and an adjusting rod 42 are hinged to the front side of the load-bearing plate 3, asFigure 10 As shown, the end of the adjusting rod 42 is hinged to the middle of the guiding pressure rod 41. The length of the adjusting rod 42 is adjustable. The adjusting rod 42 is used to adjust the angle of the guiding pressure rod 41. By changing the inclination angle of the guiding pressure rod 41, the distance between the runner 43 and the second baffle 40 is adjusted to ensure that there are components for limiting both the front and back sides of the steel plate, guaranteeing the linear movement of the steel plate and the punching position of the electromagnetic punch 5 on the steel plate. The runner 43 is rotatably connected to the guiding pressure rod 41, and the friction coefficient of the side contact of the steel plate is reduced by the runner 43, reducing the resistance for the movement of the steel plate.

[0053] The overall working process of the present invention: A steel coil rack and an uncoiler are provided at the right end of the device. The outer end of the steel coil moves from the right end to the left end of the load-bearing plate 3. The first pressure roller 2301 at the right end of the load-bearing plate 3 flattens the surface of the steel plate, and the cleaning roller 27 on the right side of the first pressure roller 2301 sweeps the surface of the steel plate to remove the particulate matter on the surface of the steel plate. The steel plate after passing through the first pressure roller 2301 will be limited by the guiding pressure rod 41 and the second baffle 40. The position of the steel plate is limited by the second baffle 40 and the guiding pressure rod 41. After the position adjustment of the steel plate is completed, it will move between the electromagnetic punch 5 and the die holder. The die holder and the electromagnetic punch 5 punch the steel plate. After the electromagnetic punch 5 completes punching, the one-way air inlet pipe under the die holder inflates the stamped part through the cavity 803 and the air holes 804. The upward airflow not only balances the air pressure inside the stamped part but also provides an upward acting force for the stamped part. In this way, the stamped part can be quickly demolded to avoid material jamming. After the stamped part is demolded, it will move upward with the lifting table 15 and the electromagnetic punch 5 under the electromagnetic suction of the electromagnet. When the lifting table 15 moves upward, it will pull the blanking plate 9 to move to the right through the pull rod 20. Then the blanking plate 9 moves to the right below the electromagnetic punch 5. After the electromagnetic punch 5 is powered off, the stamped part falls onto the blanking plate 9 under the action of gravity. The blanking plate 9 transfers the stamped part into the collection box 11. The steel plate continues to move to the left after punching. There will be holes left on the steel plate after punching. When the steel plate with holes moves to the first steel plate cutting wheel 30 and the second steel plate cutting wheel 32, the steel plate with holes and the intact steel plate will be separated. The waste steel plate with holes will fall below the blanking chute 10 and then be separated or bundled. The intact steel plate is re-rolled on the second roller 1302 of the receiving rack 12 for future use.

[0054] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fire extinguisher head stamping and forming machine, characterized in that: It includes a frame. A load-bearing frame is fixedly connected to the side of the frame. A load-bearing plate is fixedly connected to the load-bearing frame. Stamping holes are provided on the load-bearing plate. An electromagnetic punch is arranged above the stamping holes. The electromagnetic punch is vertically slidably connected to the frame. A pressure plate is slidably connected to the outside of the electromagnetic punch. A stepped hole for the electromagnetic punch to pass through is provided on the pressure plate. A punch grinding assembly is slidably connected in the stepped hole. A mold sleeve is fixedly connected in the stamping hole. A load-bearing rod is fixedly connected between the mold sleeve and the load-bearing frame. A demolding assembly is arranged below the mold sleeve. A blanking plate is provided on the side of the stamping hole. The blanking plate is horizontally slidably connected above the load-bearing plate. The blanking plate moves synchronously with the electromagnetic punch; The punch grinding assembly includes a fixing plate. The fixing plate is fixedly connected to the pressure plate. A first fixing ring is fixedly connected below the fixing plate. A plurality of equally angularly distributed grinding blocks are slidably connected in the first fixing ring. The grinding blocks abut against the outside of the electromagnetic punch. A limiting plate is fixedly connected to the grinding block. A second fixing ring is arranged outside the limiting plate. An elastic resetting member is installed between the second fixing ring and the limiting plate. The second fixing ring is fixedly connected to the fixing plate; The demolding assembly includes a one-way air inlet pipe. A piston column is fixedly connected to the one-way air inlet pipe. An annular cavity is provided below the mold sleeve. The piston column is slidably connected in the cavity. Air vent holes are provided on the mold sleeve above the cavity. The piston column is slidably connected to the load-bearing rod. The piston column is fixedly connected to a first guide rod. A guide hole for the first guide rod to slide through is formed on the load-bearing frame. A sliding sleeve is fixedly connected to the middle of the first guide rod. The sliding sleeve is slidably connected to the load-bearing rod. A first spring is sleeved on the first guide rod between the sliding sleeve and the load-bearing frame; The elastic resetting member includes a second guide rod. One end of the second guide rod is fixedly connected to the limiting plate. The other end of the second guide rod is slidably connected to the second fixing ring. A reset spring is sleeved on the second guide rod inside the second fixing ring.

2. The stamping forming machine for a fire extinguisher head according to claim 1, wherein: A groove for cooperating with the mold sleeve is provided inside the electromagnetic punch. An electromagnet is fixedly connected in the groove. A lifting platform is fixedly connected to the outside of the electromagnetic punch. A sliding rod penetrates through the side of the lifting platform. The lower end of the sliding rod is fixedly connected to the pressure plate. A second spring is sleeved on the sliding rod between the pressure plate and the lifting platform.

3. The stamping and forming machine for the fire extinguisher head according to claim 2, wherein: A pull rod is hinged to the side of the lifting platform. The other end of the pull rod is hinged to a support rod. The support rod is fixedly connected to the blanking plate. The lower end of the blanking plate is slidably connected to a guide frame. The guide frame is fixedly connected above the load-bearing frame.

4. The stamping and forming machine for a fire extinguisher head according to claim 3, wherein: Two synchronously rotating feeding pressure rollers are provided on both sides of the load-bearing plate. The feeding pressure rollers are located below the guide frame. The two feeding pressure rollers are respectively located on the left and right sides of the stamping hole. A first belt pulley set is connected between the two feeding pressure rollers.

5. The stamping and forming machine for a fire extinguisher head according to claim 4, wherein: The feeding pressure roller includes a first pressure roller and a second pressure roller. A first gear is coaxially and fixedly connected to the first pressure roller. A second gear meshes with the right side of the first gear. The second gear is fixedly connected to a cleaning roller. One end of the second pressure roller is fixedly connected to a third gear. The third gear meshes with a fourth gear. The fourth gear is fixedly connected to a first steel plate cutting wheel.

6. The stamping and forming machine for the fire extinguisher head according to claim 5, characterized in that: A blanking chute is provided below the blanking plate. A collection box that cooperates with the blanking plate is provided on the left side of the blanking chute. The collection box is fixedly connected to a material receiving frame. A material receiving roller is rotatably connected to the material receiving frame. The other end of the second pressure roller is fixedly connected to a second pulley set. The second pulley set is fixedly connected to a second steel plate cutting wheel. A third pressure roller is provided on the left side of the second steel plate cutting wheel. The third pressure roller is located on the right side of the blanking chute.

7. The stamping and forming machine for the fire extinguisher head according to claim 6, characterized in that: The material receiving roller includes a first roller body and a second roller body. Fourth pressure rollers are provided below both the first roller body and the second roller body. The fourth pressure rollers are rotatably connected to the material receiving frame. A material guiding groove that cooperates with the first roller body and the second roller body is provided on the material receiving frame. The width of the first roller body is the same as the width of the blanking chute.

8. A fire extinguisher head stamping machine according to claim 6 or 7, characterized in that: A first telescopic rod is provided above the blanking chute. The first telescopic rod is fixedly connected to the load-bearing frame. A first baffle is fixedly connected to the first telescopic rod. The front side of the first baffle is flush with the front side of the blanking chute. A guiding roller is provided below the blanking chute. The guiding roller is rotatably connected to the load-bearing frame.

9. A fire extinguisher head stamping machine according to claim 1, wherein: A second telescopic rod is provided at the rear side of the load-bearing plate. A second baffle is fixedly connected to the front end of the second telescopic rod. A guiding pressure rod is hinged to the front side of the load-bearing plate. A regulating rod is hinged to the middle of the guiding pressure rod. The other end of the regulating rod is hinged to the load-bearing plate. A runner is rotatably connected to the end of the guiding pressure rod.

Images