Stamping device

Abstract

The utility model provides a stamping device, which relates to the field of automobile part processing and comprises a stamping table (10), a positioning mechanism, a turntable (30), a fixing mechanism, a support (50), a top plate (60), a lifting plate (70), an upper die (80) and a lower die (90), the top surface of the stamping table (10) is provided with the positioning mechanism, and the lower die (90) is arranged on the end surface of the stamping table (10); a turntable (30) is rotationally arranged in an inner cavity of the punching table (10); the fixing mechanisms are uniformly distributed around the lower die (90) and comprise sliding blocks (41), positioning pins (42) and guide rods (43); a top plate (60) is arranged on the outer ring of the end face of the stamping table (10) through a support (50), a lifting plate (70) is arranged in the middle of the top plate (60) through a hydraulic cylinder (61), and an upper die (80) corresponding to the lower die (90) is arranged on the bottom face of the lifting plate (70). According to the stamping device, the forming die is replaced according to the sizes of different parts, and the use range of the stamping device is effectively widened.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, in particular to a punching device. Background Art

[0002] A stamping device is a process equipment used to process materials into parts. It primarily relies on a press to apply pressure to a die on plates, strips, tubes, and profiles, causing the material to plastically deform or separate, resulting in parts of specific shapes and sizes. In automobile production processes, a large number of parts (such as front covers and air reservoirs) are produced using stamping devices. Chinese patent document CN221694996U discloses a modular automotive parts stamping die. This device, through the coordinated use of a buffer sleeve, a movable rod, and a buffer spring, provides a buffering and protective function for the upper die, extending its service life. The provision of a buffer element enhances the buffering performance of the lower die, thereby providing protection for the lower die. The coordinated use of a guide sleeve and support column improves the stability of the stamping mechanism. However, there are a large number of different stamping parts in automobile parts, and corresponding to them there are different stamping dies. The combined automobile parts stamping die in the above patent cannot be replaced with stamping dies for parts of different sizes, and its scope of use has certain limitations and a narrow scope of application. At the same time, the combined automobile parts stamping die only fixes and positions the lower die through the die groove, and the fixing effect is poor. During the stamping process of the upper and lower dies, the lower die is prone to displacement due to the extrusion force, resulting in low stamping precision and large errors, and even problems such as die closing or stamping failure. Utility Model Content

[0003] In response to the problems existing in the above-mentioned prior art, the purpose of the present utility model is to provide a stamping device, which can replace and disassemble the forming mold (including the upper mold and the lower mold) according to the sizes of different components, thereby improving the use range and adaptability of the stamping device; at the same time, the stamping device can firmly position the mold to avoid problems such as mold displacement caused by the extrusion force during the stamping process.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A stamping device comprises a stamping table, a positioning mechanism, a turntable, a fixing mechanism, a bracket, a top plate, a lifting plate, an upper mold and a lower mold. A positioning mechanism is arranged in the middle of the top surface of the stamping table for positioning the lower mold. The lower mold is arranged on the end surface of the stamping table and a positioning groove is provided at the bottom thereof corresponding to the positioning mechanism; a turntable is arranged for rotation in the inner cavity of the stamping table; the fixing mechanism is evenly distributed on the outer ring of the lower mold (i.e., the lower mold) around the central axis of the lower mold, comprising a sliding block, a positioning pin and a guide rod. The sliding block is slidably arranged on the end surface of the stamping table and a positioning pin is provided in the middle of the side close to the lower mold. A fixing groove is provided on the side wall of the lower mold corresponding to the positioning pin. A guide rod is fixedly arranged on the bottom surface of the sliding block. The stamping table is located on the upper and lower sides of the turntable and horizontal grooves are provided corresponding to the guide rods. The turntable has an arc groove corresponding to the guide rod, and the guide rods pass through the corresponding horizontal grooves and arc grooves in sequence; a top plate parallel to it (i.e., the stamping table) is arranged on the outer ring of the end surface of the stamping table through a bracket, a lifting plate is provided in the middle of the top plate through a hydraulic cylinder and an upper mold corresponding to the lower mold is provided in the middle of the bottom surface of the lifting plate.

[0006] Based on further optimization of the above solution, four supporting feet are correspondingly provided at the bottom of the stamping table, and the supporting feet are threadedly connected to the bottom of the stamping table through bolts to ensure that the supporting feet are adjustable and detachable.

[0007] Based on further optimization of the above scheme, the positioning mechanism includes a positioning block, a lifting cylinder, a push rod and a first spring. The positioning block is coaxially arranged on the end face of the stamping table and is fixedly connected to the stamping table; the lifting cylinder is slidably sleeved on the outer wall of the positioning block and the central axis of the lifting cylinder and the positioning block are collinear; the push rod and the positioning block are coaxially arranged and the upper end of the push rod is fixedly connected to the lifting cylinder, the lower end of the push rod passes through the positioning block and the stamping table in sequence and a first limit block is fixedly arranged at its lower end; a first spring is arranged between the top surface of the positioning block and the inner top surface of the lifting cylinder and located on the outer ring of the push rod.

[0008] Based on further optimization of the above solution, a spring groove is opened in the middle of the side of the sliding block close to the lower mold, a positioning pin is slidably set in the spring groove, and the end of the positioning pin away from the lower mold is connected to the corresponding spring groove through a second spring.

[0009] Based on further optimization of the above solution, a second limit block is fixedly provided at the end of the guide rod located at the lower side of the stamping table, and the second limit block is slidably connected to the bottom surface of the stamping table.

[0010] Based on further optimization of the above scheme, the rotation of the turntable is controlled by a driving mechanism arranged on the stamping table, specifically: the driving mechanism includes a rotating sleeve, a first gear, a gear rod and a second gear, a through hole is arranged in the middle of the turntable (that is, the cross section of the turntable is a ring structure), the rotating sleeve is arranged corresponding to the through hole and its top end is rotatably connected to the inner side of the stamping table, and its bottom passes through the bottom surface of the inner cavity of the stamping table and is rotatably connected, the rotating sleeve and the push rod are coaxially arranged and the rotating sleeve is penetrated by the push rod; the outer wall of the rotating sleeve is fixedly sleeved with the first gear, and the side wall of the through hole of the turntable is fixedly sleeved with the inner gear ring, a second gear is arranged between the first gear and the inner gear ring and the second gear is respectively engaged with the first gear and the inner gear ring, the second gear is fixedly sleeved on the outer wall of the gear rod and the gear rod is rotatably arranged in the inner cavity of the stamping table.

[0011] Based on the further optimization of the above solution, sliders are fixedly provided on both sides of the corresponding bracket of the lifting plate, and vertical grooves are opened on the opposite sides of the bracket. The sliders slide and are engaged in the corresponding vertical grooves, thereby ensuring the stability of the lifting of the upper mold.

[0012] Based on further optimization of the above solution, a mounting plate is fixedly provided on the bottom surface of the lifting plate, and an upper mold is detachably provided on the bottom of the mounting plate.

[0013] The following are the technical effects of the present invention:

[0014] This application realizes the initial center positioning of the lower mold during the placement process on the end face of the stamping table by setting a positioning mechanism; then, the fixing mechanism composed of a sliding block, a positioning pin and a guide rod is used to clamp and fix the lower mold placed on the end face of the stamping table through the drive of a turntable, thereby avoiding the problem of the lower mold being offset due to the extrusion force during the stamping process, affecting the stamping accuracy, etc. At the same time, the fixing mechanism composed of a sliding block, a positioning pin and a guide rod cooperates with the positioning mechanism to effectively adapt to lower molds of different sizes. In conjunction with the detachable connection between the upper mold and the lifting plate, the corresponding replacement between the upper mold and the lower mold is facilitated, thereby improving the overall adaptability of the stamping device, expanding the stamping range, and making the stamping device suitable for stamping different automotive parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the punching device in the embodiment of the present utility model (ie, embodiment 1).

[0016] Figure 2 for Figure 1 AA section view.

[0017] Figure 3 for Figure 1 A partial enlarged view of B.

[0018] Figure 4 for Figure 1 A partial enlarged view of C in the middle.

[0019] Figure 5 This is a schematic structural diagram of a punching device in another embodiment of the present invention (ie, embodiment 2).

[0020] Among them, 10, stamping table; 11, supporting foot; 21, positioning block; 22, lifting cylinder; 23, push rod; 230, first limit block; 24, first spring; 30, turntable; 31, rotating sleeve; 32, first gear; 33, gear rod; 34, second gear; 35, arc groove; 41, sliding block; 410, second spring; 42, positioning pin; 43, guide rod; 430, second limit block; 50, bracket; 60, top plate; 61, hydraulic cylinder; 70, lifting plate; 71, slider; 72, mounting plate; 720, buffer; 80, upper mold; 90, lower mold. DETAILED DESCRIPTION

[0021] 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.

[0022] Example 1:

[0023] A stamping device includes a stamping table 10, a positioning mechanism, a turntable 30, a fixing mechanism, a bracket 50, a top plate 60, a lifting plate 70, an upper mold 80 and a lower mold 90, see Figure 1 As shown: four supporting feet 11 are correspondingly provided at the bottom of the punching table 10, and the supporting feet 11 are threadedly connected to the bottom of the punching table 10 by bolts to ensure that the supporting feet 11 are adjustable and detachable (at the same time, in order to avoid deformation, breakage and other problems caused by repeated squeezing of the supporting feet 11 and the ground during the punching process, a buffer rubber pad is provided at the bottom of the supporting feet 11, and the buffer rubber pad can be a conventional product in this field). A positioning mechanism is provided in the middle of the top surface of the punching table 10 for positioning the lower mold 90. The positioning mechanism includes a positioning block 21, a lifting cylinder 22, a push rod 23 and a first spring 24. The positioning block 21 is coaxially provided on the end face of the punching table 10 (that is, the positioning block 21 is in line with the central axis of the punching table 10) and the positioning block 21 is fixedly connected to the punching table 10; the lifting cylinder 22 is slidably sleeved on the outer wall of the positioning block 21 and the lifting cylinder 22 is in line with the central axis of the positioning block 21 (such as Figure 3 As shown); the push rod 23 is coaxially arranged with the positioning block 21 and the upper end of the push rod 23 is fixedly connected to the lifting cylinder 22 (as shown); Figure 3 As shown in FIG), the lower end of the push rod 23 sequentially passes through the positioning block 21 and the punching table 10 and a first limiting block 230 is fixedly provided at the lower end thereof (as shown in FIG). Figure 1 A first spring 24 is provided between the top surface of the positioning block 21 and the inner top surface of the jacking cylinder 22 and located on the outer ring of the jack rod 23 (as shown); Figure 3As shown, the first spring 24 is collinear with the central axis of the ejector rod 23, and the upper and lower ends of the first spring 24 are fixedly connected to the inner top surface of the jacking cylinder 22 and the top surface of the positioning block 21, respectively. The lower mold 90 is set on the end surface of the punching table 10, and a positioning groove is provided on its bottom corresponding to the positioning mechanism (specifically corresponding to the jacking cylinder 22) (combined with the Figure 1 and Figure 3 shown).

[0024] The inner cavity of the punching table 10 is provided with a turntable 30 (such as Figure 1 As shown, the outer wall of the turntable 30 is sleeved with a ball bearing to achieve rotational connection with the inner cavity of the punching table); the fixing mechanism is evenly distributed around the center axis of the lower mold 90 (i.e., the outer ring of the lower mold 90) (i.e., the number of the fixing mechanism is multiple groups, generally 4 to 8 groups, see Figure 2 As shown, in this embodiment, 6 sets of fixing mechanisms are used), including a sliding block 41, a positioning pin 42 and a guide rod 43. The sliding block 41 is slidably arranged on the end surface of the stamping table 10 and a positioning pin 42 is arranged in the middle of one side close to the lower mold 90, see Figure 4 As shown: a spring groove is provided in the middle of the side of the sliding block 41 close to the lower mold 90, a positioning pin 42 is slidably arranged in the spring groove, and the end of the positioning pin 42 away from the lower mold 90 is connected to the corresponding spring groove through a second spring 410. A fixing groove is provided on the side wall of the lower mold 90 corresponding to the positioning pin 42 (the positioning pin 42 can be clamped in the corresponding fixing groove, as shown in FIG. Figure 4 At the same time, in order to ensure the stability of the clamping positioning, the positioning pin 42 can be set as a spline structure, and the fixed groove is correspondingly set as a spline groove). The guide rod 43 is fixedly provided on the bottom surface of the sliding block 41. The punching table 10 is located on the upper and lower sides of the turntable 30 and has horizontal grooves corresponding to the guide rod 43. The turntable 30 has an arc groove 35 corresponding to the guide rod 43 (as shown). Figure 2 As shown in the figure), the guide rod 43 passes through the corresponding horizontal groove and arc groove in sequence (and the guide rod 43 is slidably connected to the corresponding horizontal groove and arc groove); the second limit block 430 is fixedly provided at the end of the guide rod 43 located on the lower side of the punching table 10, and the second limit block 430 is slidably connected to the bottom surface of the punching table 10 (to prevent the guide rod 43 from offsetting during the sliding process). The turntable 30 is controlled to rotate by a driving mechanism provided on the punching table 10, specifically: the driving mechanism includes a rotating sleeve 31, a first gear 32, a gear rod 33 and a second gear 34, and a through hole is provided in the middle of the turntable 30 (that is, the cross section of the turntable 30 is a ring structure, combined with Figure 1 and Figure 2 As shown, the rotating sleeve 31 is provided corresponding to the through hole and its top end is rotatably connected to the inner side of the punching table 10 (as shown in FIG. Figure 1 As shown), its bottom penetrates the bottom surface of the inner cavity of the punching table 10 and is rotatably connected, the rotating sleeve 31 is coaxially arranged with the ejector rod 23 and the rotating sleeve 31 is penetrated by the ejector rod 23 (as shown Figure 1As shown, the outer wall of the push rod 23 and the inner wall of the rotating sleeve 31 do not contact each other); the outer wall of the rotating sleeve 31 (corresponding to the turntable 30) is fixedly sleeved with the first gear 32, and the side wall of the through hole of the turntable 30 is fixedly sleeved with the inner gear ring. A second gear 34 is set between the first gear 32 and the inner gear ring, and the second gear 34 is respectively engaged with the first gear 32 and the inner gear ring. The second gear 34 is fixedly sleeved on the outer wall of the gear rod 33, and the gear rod 33 is rotatably set in the inner cavity of the stamping table 10 (as shown in FIG. Figure 1 shown).

[0025] The outer ring of the end face of the punching table 10 is provided with a top plate 60 parallel to it (i.e., the punching table 10) through a bracket 50. A lifting plate 70 is provided in the middle of the top plate 60 via a hydraulic cylinder 61, and an upper mold 80 corresponding to the lower mold 90 is provided in the middle of the bottom surface of the lifting plate 70. Sliders 71 are fixedly provided on both sides of the lifting plate 70 corresponding to the bracket 50. Vertical slots are provided on the opposite sides of the bracket 50. The slides 71 slide and engage in the corresponding vertical slots, thereby ensuring the stability of the upper mold 80 when it is raised and lowered. Figure 1 As shown, a mounting plate 72 is fixedly provided on the bottom surface of the lifting plate 70 , and an upper mold 80 is detachably provided on the bottom of the mounting plate 72 (the upper mold 80 can be connected to the mounting plate 72 by bolts), thereby ensuring that the upper mold 80 is detachable.

[0026] Working principle:

[0027] When in use, first, the fixing groove and the positioning groove of the lower mold 90 are processed according to the size and position of the positioning pin 42 and the size of the lifting cylinder 22 (this step can be processed while processing the forming groove of the lower mold 90, and at the same time ensure that the positioning groove and the forming groove are connected); then, the lower mold 90 is placed on the end face of the stamping table 10, so that the lifting cylinder 22 is clamped in the positioning groove of the lower mold 90, and the sliding block 41 corresponds to the fixing groove respectively. In this process, the upper mold 80 is synchronously installed on the mounting plate 72 so that the upper mold 80 corresponds to the lower mold 90; thereafter, the rotating cylinder 31 is started to rotate (the rotating cylinder 31 can be driven to rotate by a motor gear mechanism provided on the bottom surface of the stamping table 10, that is, the motor is fixedly provided on the bottom surface of the stamping table 10 and the outer wall of the motor output shaft is fixedly sleeved with the driving bevel gear, and the outer wall of the rotating cylinder 31 located on the lower side of the bottom surface of the stamping table 10 is fixedly sleeved with the driven bevel gear, and the driving bevel gear and The driven bevel gears are meshed with each other, thereby realizing the driving of the rotating cylinder 31), the rotating cylinder 31 drives the turntable 30 to rotate through the first gear 32 and the second gear 34, and the turntable 30 drives the sliding block 41 to slide toward the side close to the lower mold 90 through the guide rod 43, so that the positioning pin 42 is gradually engaged in the corresponding fixing groove of the lower mold 90, thereby realizing the clamping and fixing of the lower mold 90; then, the ejector rod 23 is started to rise (the driving of the ejector rod 23 can be realized by a pneumatic device or a hydraulic cylinder arranged on the bottom surface or the bottom surface of the stamping table 10), and the ejector rod 23 drives the lifting cylinder 22 to rise (the first spring 24 is stretched) until the top surface of the lifting cylinder 23 is flush with the bottom surface of the forming groove of the lower mold 90; then, the material to be stamped is placed on the lower mold 90, and the lifting plate 70 is started to move downward by the hydraulic cylinder 61. The lifting plate 70 drives the upper mold 80 to move downward and cooperates with the lower mold 90 to realize the stamping of the material to be stamped. Finally, the upper mold 80 is separated from the lower mold 90, the ejector rod 23 driver (i.e., pneumatic device or hydraulic cylinder) releases pressure, and the jacking cylinder 22 moves downward due to the action of the first spring 24. The ejector rod 23 driver (i.e., pneumatic device or hydraulic cylinder) is then started to move the jacking cylinder 22 upward. This reciprocating cycle causes vibration to the parts in the molding groove, making it easier to unload the parts.

[0028] Example 2:

[0029] As a further optimization of the solution of the present invention, in order to avoid the impact damage to the mold (i.e., the upper mold 80 and the lower mold 90) caused by long-term stamping, based on the solution of Example 1, see Figure 5As shown: the mounting plate 72 and the lifting plate 70 are connected by buffers 720 evenly distributed around the central axis of the lifting plate 70 (that is, the buffers 720 are in multiple groups, generally 3 to 6 groups), the buffers 720 include a buffer sleeve, a movable rod and a buffer spring, the top of the buffer sleeve is fixedly connected to the lifting plate 70, and the bottom end of the movable rod is fixedly connected to the mounting plate 72, the movable rod and the buffer sleeve are coaxially arranged and the end of the movable rod away from the mounting plate 72 is slidably arranged on the inner wall of the buffer sleeve, and the upper end of the movable rod is connected to the inner cavity of the buffer sleeve through a buffer spring; a buffer layer is provided on the end face of the stamping table 10 and located between the positioning mechanism and the bracket 50 (that is, between the outer wall of the jacking cylinder 22 and the bracket 50), and a through groove is provided in the buffer layer corresponding to the horizontal groove. The buffer layer is composed of an elastic plate, a bonding layer and a polyethylene plate from top to bottom, and the elastic plate, the bonding layer and the polyethylene plate are injection molded as one piece.

Claims

1. A punching device, characterized in that: It includes a stamping table, a positioning mechanism, a turntable, a fixing mechanism, a bracket, a top plate, a lifting plate, an upper mold and a lower mold. The positioning mechanism is arranged in the middle of the top surface of the stamping table, the lower mold is arranged on the end surface of the stamping table and a positioning groove is provided on the bottom thereof corresponding to the positioning mechanism; a turntable is arranged for rotation in the inner cavity of the stamping table; the fixing mechanism is evenly distributed on the outer ring around the central axis of the lower mold, and includes a sliding block, a positioning pin and a guide rod. The sliding block is slidingly arranged on the end surface of the stamping table and a positioning pin is arranged in the middle of the side close to the lower mold. A fixing groove is provided on the side wall of the lower mold corresponding to the positioning pin, and a guide rod is fixedly arranged on the bottom surface of the sliding block. The stamping table is located on the upper and lower sides of the turntable and a horizontal groove is provided corresponding to the guide rod. The turntable has an arc groove corresponding to the guide rod, and the guide rod passes through the corresponding horizontal groove and arc groove in sequence; a top plate parallel to the outer ring of the end surface of the stamping table is arranged through a bracket, a lifting plate is arranged in the middle of the top plate through a hydraulic cylinder, and an upper mold corresponding to the lower mold is arranged in the middle of the bottom surface of the lifting plate.

2. A punching device according to claim 1, characterized in that: Four supporting legs are correspondingly provided at the bottom of the stamping platform, and the supporting legs are threadedly connected to the bottom of the stamping platform through bolts.

3. A punching device according to claim 1, characterized in that: The positioning mechanism includes a positioning block, a lifting cylinder, a push rod and a first spring. The positioning block is coaxially arranged on the end surface of the stamping table and is fixedly connected to the stamping table; the lifting cylinder is slidably sleeved on the outer wall of the positioning block and the central axis of the lifting cylinder and the positioning block are collinear; the push rod and the positioning block are coaxially arranged and the upper end of the push rod is fixedly connected to the lifting cylinder, the lower end of the push rod passes through the positioning block and the stamping table in sequence and a first limit block is fixedly arranged at its lower end; a first spring is arranged between the top surface of the positioning block and the inner top surface of the lifting cylinder and located on the outer ring of the push rod.

4. A punching device according to claim 1, characterized in that: A spring groove is provided in the middle of one side of the sliding block close to the lower mold, a positioning pin is slidably arranged in the spring groove, and an end of the positioning pin away from the lower mold is connected to the corresponding spring groove through a second spring.

5. A punching device according to claim 1, characterized in that: A second limiting block is fixedly provided at the end portion of the guide rod located at the lower side of the punching platform, and the second limiting block is slidably connected to the bottom surface of the punching platform.

6. A punching device according to claim 3, characterized in that: The rotation of the turntable is controlled by a driving mechanism arranged on the stamping table, specifically: the driving mechanism includes a rotating sleeve, a first gear, a gear rod and a second gear, a through hole is arranged in the middle of the turntable, the rotating sleeve is arranged corresponding to the through hole and its top end is rotatably connected to the inner side of the stamping table, and its bottom passes through the bottom surface of the inner cavity of the stamping table and is rotatably connected, the rotating sleeve and the push rod are coaxially arranged and the rotating sleeve is penetrated by the push rod; the outer wall of the rotating sleeve is fixedly sleeved with the first gear, and the side wall of the through hole of the turntable is fixedly sleeved with the inner gear ring, a second gear is arranged between the first gear and the inner gear ring and the second gear is respectively engaged with the first gear and the inner gear ring, the second gear is fixedly sleeved on the outer wall of the gear rod and the gear rod is rotatably arranged in the inner cavity of the stamping table.

7. A punching device according to claim 1, characterized in that: Slide blocks are fixedly provided on both sides of the corresponding bracket of the lifting plate, and vertical grooves are provided on the opposite sides of the bracket, and the slide blocks are slidably engaged in the corresponding vertical grooves.

8. A punching device according to claim 1, characterized in that: A mounting plate is fixedly arranged on the bottom surface of the lifting plate, and an upper mold is detachably arranged on the bottom of the mounting plate.

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