Grounding round steel stamping device

Abstract

The invention relates to the technical field of stamping, in particular to a grounding round steel stamping device which solves the problem that after two pieces of aligned and lapped grounding round steel are stamped, the meshing depth is small, and relates to the technical field of stamping, in particular to a grounding round steel stamping device which comprises a lifting structure installed on the top of a base. An upper mold detachably combined with the lifting structure is arranged above the lower mold, the lower mold comprises a bearing main body and a bearing secondary body, a rectangular notch is formed in one side of the top surface of the bearing main body, so that the bearing main body forms a stepped top surface, and the bearing secondary body is located at the rectangular notch of the bearing main body and is consistent with the rectangular notch in shape and size; a notch is formed in the bottom wall of the rectangular notch of the bearing body, and a first pressure sensor is embedded in the edge of the top face of the bearing body. Subsequent stamping can be carried out in the mode that the two pieces of grounding round steel are in lap joint up and down, compared with aligned stamping, the large effective contact area is achieved, and firmer mechanical meshing is conveniently formed during stamping.

Description

Technical Field

[0001] The invention relates to the field of stamping technology, in particular to a grounded round steel stamping device. Background Art

[0002] Under normal circumstances, the two grounded round steels to be overlapped are directly aligned or closely arranged. However, in this way, the contact area of ​​the two grounded round steels is relatively small, which limits the bite depth after stamping, resulting in the two grounded round steels overlapped in this way having relatively weak tensile and shear resistance. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the present invention aims to provide a grounded round steel punching device to solve the problem of small engagement depth of two aligned and overlapped grounded round steels after punching proposed in the above background art.

[0004] To achieve the above object, the present invention provides the following technical solution: a grounded round steel punching device, comprising a lifting structure installed on the top of a base, a limiting structure installed on the top surface of the base, a lower mold plugged into the limiting structure, and an upper mold detachably assembled with the lifting structure provided above the lower mold; The lower mold includes a load-bearing main body and a load-bearing secondary body. A rectangular notch is provided on one side of the top surface of the load-bearing main body, so that the load-bearing main body forms a stepped top surface. The load-bearing secondary body is located at the rectangular notch of the load-bearing main body and is consistent with the shape and size of the rectangular notch. A notch is provided on the bottom wall of the rectangular notch of the load-bearing main body. A pressure sensor 1 is embedded in the edge of the top surface of the load-bearing main body. An electric push rod electrically connected to the pressure sensor 1 is detachably installed on the bottom wall of the notch, and the rising and falling rates of the electric push rod are consistent with the lifting structure. The electric push rod is used to lift the load-bearing secondary body so that its top surface is higher than the top surface of the load-bearing main body, forming a height difference greater than the diameter of the grounded round steel.

[0005] Preferably, the bearing secondary body includes a solid block and a supporting plate arranged above the solid block, the top surface of the supporting plate is provided with a plurality of first grooves with different inner diameters, the top surface of the solid block is provided with a columnar groove, and an elastic support is connected between the columnar groove and the supporting plate.

[0006] Preferably, when a grounded round steel is placed in one of the first grooves, the distance between the supporting plate and the solid block is greater than 5 mm and smaller than the radius of the grounded round steel.

[0007] Preferably, the elastic support includes a threaded disk fixedly mounted on the bottom wall of the columnar groove and the bottom of the support plate, the outer surfaces of the two threaded disks are threadedly sleeved with covers, and a telescopic spring and a telescopic sleeve are installed between the two covers.

[0008] Preferably, the top surface of the carrier body is provided with second grooves having the same number as the first grooves, and the inner diameters of the first and second grooves on the vertical surface are consistent, and the bottom wall of the second groove is embedded with a second pressure sensor and a displacement encoder.

[0009] Preferably, the second groove consists of a straight portion and a concave portion, and when the bottom of the secondary bearing body is in contact with the bottom wall of the rectangular notch of the main bearing body, the straight portion of the first groove and the second groove on the same vertical surface are coaxial.

[0010] Preferably, the upper mold includes an upper mold body and a slider connected to the lifting structure, and the upper mold body and the slider are detachably connected by bolts.

[0011] Preferably, the upper mold body is movably connected to a limiting hanging plate, and a limiting groove adapted to the second groove on the top surface of the supporting body is provided at the bottom of the limiting hanging plate.

[0012] By means of the above technical solution, the present invention provides a grounded round steel punching device, which has at least the following beneficial effects: 1. The present invention increases the contact area by staggering the contact surfaces of the two grounded round steel bars up and down. During the stamping process, the secondary load-bearing body descends along with the descending rate of the upper die until the top surface is adjusted to the same height as the top surface of the main load-bearing body. This ensures that the overlapping parts of the two grounded round steel bars can be more evenly stressed. Compared with aligned overlap stamping, it can form a deeper mechanical bite after stamping, thereby having a stronger mechanical connection strength.

[0013] 2. The present invention utilizes a pressure sensor to sense the pressure from the upper mold when it is pressed vertically downward, and promptly determines whether the bottom of the upper mold is in contact with the top surface of the secondary support body, and provides feedback to the electric push rod, prompting the electric push rod to promptly maintain the same contraction rate as the lifting structure, thereby effectively avoiding the electric push rod from being subjected to a large extrusion force.

[0014] 3. The present invention divides the load-bearing secondary body into two parts, and adds elastic supports to create an elastic gap between the two parts, thereby reserving a certain reaction time for the electric push rod to start contracting. At the same time, the elastic supports absorb part of the impact force, thereby reducing the load on the electric push rod and more effectively reducing the risk of wear and damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2Schematic diagram of the split structure of the lower mold of the present invention; Figure 3 It is a structural schematic diagram of the carrier body of the present invention; Figure 4 This is a schematic diagram of the split structure of the carrier sub-body of the present invention; Figure 5 This is a schematic diagram of the installation structure of the supporting plate and the elastic support of the present invention; Figure 6 Schematic diagram of the change in top surface height of the supporting secondary body of the present invention when no grounded round steel is placed, when grounded round steel is placed, and when the body is subjected to compression; Figure 7 Schematic diagram of the split structure of the upper mold of the present invention.

[0016] In the figure: 1. Base; 2. Lifting structure; 3. Limiting structure; 4. Lower mold; 401. Carrying body; 4011. Notch; 4012. Second groove; 4013. Pressure sensor 2; 4014. Displacement encoder; 402. Carrying sub-body; 4021. Solid block; 4022. Support plate; 4023. First groove; 4024. Columnar groove; 4025. Elastic support; 403. Pressure sensor 1; 404. Electric push rod; 5. Upper mold; 501. Upper mold body; 502. Slider; 503. Limiting hanging plate. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0018] Example 1 See also Figure 1-Figure 7The present invention proposes a grounded round steel punching device, which can realize subsequent punching by overlapping two grounded round steel bars up and down. The basic structure of the punching device includes a lifting structure 2 installed on the top of the base 1, a limiting structure 3 is installed on the top surface of the base 1, a lower mold 4 is plugged into the limiting structure 3, and an upper mold 5 that is detachably combined with the lifting structure 2 is provided above the lower mold 4. The lifting structure 2 can be driven by a motor or a hydraulic cylinder without limitation, and is intended to be able to drive the upper mold 5 to move axially up and down during operation to adjust the distance between it and the lower mold 4. In addition, the limiting structure 3 is mainly used to limit the position of the lower mold 4 on the top surface of the base 1 to prevent it from slipping.

[0019] The lower mold 4 includes a supporting body 401 and a supporting sub-body 402. A rectangular notch is provided on one side of the top surface of the supporting body 401, so that the supporting body 401 forms a stepped top surface. The supporting sub-body 402 is located at the rectangular notch of the supporting body 401 and is consistent with the shape and size of the rectangular notch. A notch 4011 is provided on the bottom wall of the rectangular notch of the supporting body 401. A pressure sensor 403 is embedded in the edge of the top surface of the supporting body 401. An electric push rod 404 electrically connected to the pressure sensor 403 is detachably installed on the bottom wall of the notch 4011, and the rising and falling rates of the electric push rod 404 are consistent with the lifting structure 2. In the initial stage, the electric push rod 404 is in an upward thrust state, which is used to lift the supporting secondary body 402 so that its top surface is higher than the top surface of the supporting main body 401, forming a height difference greater than the diameter of the grounding round steel. Therefore, when the two grounding round steels are placed on the supporting main body 401 and the supporting secondary body 402 respectively, the grounding round steel on the top surface of the supporting secondary body 402 is located higher than the grounding round steel on the top surface of the supporting main body 401, and the two grounding round steels are fitted together or a gap smaller than the radius of the grounding round steel is reserved, so that the two grounding round steels are in an up-down staggered position relationship.

[0020] Based on the above, when the lifting mechanism 2 is subsequently operated to lower the upper mold 5, the bottom surface of the upper mold 5 first contacts the top surface of the secondary carrier body 402. At this time, the pressure sensor 1 403 senses the pressure change through its internal sensitive element and converts this change into an electrical signal. This electrical signal is processed by the circuit within the pressure sensor 1 403 and fed back to the electric push rod 404, prompting the electric push rod 404 to begin to retract downward at a rate consistent with the lifting mechanism 2 until the top surface of the secondary carrier body 402 is at the same height as the top surface of the main carrier body 401. During this process, the protrusion in the upper mold 5 begins to compress the overlapping ends of the two grounded round steel bars.

[0021] Thus, it can be seen that by lifting the secondary carrier body 402 by the electric push rod 404, the grounded round steel embedded in its top surface and the end of the grounded round steel embedded in the top surface of the main carrier body 401 are parallel and offset vertically, which can more accurately control the overlap position and avoid the deviation that may occur in the conventional direct alignment method; In addition, a pressure sensor 403 embedded in the top surface of the supporting sub-body 402 senses in real time whether the upper mold 5 is in contact with the supporting sub-body 402, and feeds back a signal to the electric push rod 404, ensuring that the electric push rod 404 can keep shrinking at the same rate as the lifting structure 2 in time, effectively avoiding the electric push rod 404 from being subjected to a large squeezing force.

[0022] Among them, compared with the mechanical bite formed by the two grounded round steels being aligned and placed in the lower mold 4, in this embodiment, the two grounded round steels are parallel and offset up and down, and the contact area is increased by the offset contact surface. During the stamping process, it will ensure that the overlapping parts of the two grounded round steels can be more evenly stressed, thereby providing stronger bonding force and increasing the stability and reliability of the overlap of the two grounded round steels.

[0023] Specifically, the upper mold 5 includes an upper mold body 501 and a slider 502 connected to the lifting structure 2, and the upper mold body 501 and the slider 502 are detachably connected by bolts, thereby ensuring that the upper mold body 501 is easy to disassemble and assemble.

[0024] More specifically, the upper mold body 501 is movably connected to a limiting hanger plate 503, and the bottom of the limiting hanger plate 503 is provided with a limiting groove that matches the second groove 4012 on the top surface of the support body 401. Under the premise that the bottom of the upper mold body 501 is not squeezed, the limiting hanger plate 503 always maintains a hanging state with its bottom lower than the bottom of the upper mold body 501 under the action of its own gravity. Therefore, when the bottom of the upper mold body 501 is in contact with the top surface of the support secondary body 402, the limiting hanger plate 503 can suppress the grounded round steel placed on the top of the support body 401, preventing the grounded round steel on the support body 401 from shifting in position as the upper mold 5 continues to press down. In addition, the pressed boss part in the upper mold 5 matches the outer diameter of the grounded round steel, and the boss surface is engraved with regular prismatic patterns. During operation, the lifting structure 2 drives the upper mold 5 to press down vertically. Under a constant pressure of 10-15MPa, the boss pattern forms a metallurgical bond with the round steel surface, and mechanical bite and surface embossing treatment are completed simultaneously.

[0025] Example 2 Following the above-mentioned embodiment 1, when the pressure sensor 1 403 senses the pressure from the upper mold 5 when it moves downward and then feeds back to the electric push rod 404, a slight time difference may occur during this process, which causes the electric push rod 404 to be subjected to the squeezing force generated by the downward push of the lifting structure 2 and the upper mold 5, thereby affecting the service life of the electric push rod 404. In order to effectively solve this problem, Figure 4-Figure 6 As shown, the supporting secondary body 402 includes a solid block 4021 and a supporting plate 4022 disposed above the solid block 4021. The top surface of the supporting plate 4022 is provided with a plurality of first grooves 4023 of varying inner diameters. The top surface of the solid block 4021 is provided with a cylindrical groove 4024. An elastic support 4025 is connected between the cylindrical groove 4024 and the supporting plate 4022. When a grounded round steel bar is placed in one of the first grooves 4023, the spacing between the supporting plate 4022 and the solid block 4021 is greater than 5 mm and less than the radius of the grounded round steel bar. Therefore, even after the grounded round steel bar to be overlapped is placed on top of the supporting plate 4022, a certain gap still remains between the supporting plate 4022 and the solid block 4021. At the moment that pressure sensor 1 403 senses the downward pressure from the upper mold 5 and feeds it back to the electric push rod 404, the elastic support 4025 absorbs the impact force generated by the weight of the upper mold 5 and the vertical downward pressure. Before the electric push rod 404 begins to retract, the elastic support 4025 absorbs some of the force, reducing the load on the electric push rod 404 and more effectively reducing the risk of wear and damage. This also allows for a slight reaction time for the electric push rod 404 to begin retracting.

[0026] Example 3 like Figure 5 As shown, the elastic support 4025 includes a threaded disk fixedly mounted on the bottom wall of the cylindrical groove 4024 and the bottom of the support plate 4022. The threads of the upper and lower threaded disks are in opposite directions. The outer surfaces of the two threaded disks are threaded with covers, and a telescopic spring and a telescopic sleeve are installed between the two covers. The telescopic spring serves as the elastic source of the elastic support 4025, and the telescopic sleeve is configured to only be able to contract and extend up and down, but not rotate. During actual assembly, multiple components consisting of covers, telescopic springs, and telescopic sleeves are placed in the cylindrical groove 4024, and the support plate 4022 is then placed on the solid block 4021 and aligned. Then, by simultaneously applying a rotational force to the telescopic springs, the covers and the threaded disks are forced to assemble, thereby completing the detachable assembly of the components consisting of the covers, telescopic springs, and telescopic sleeves with the support plate 4022 and the solid block 4021.

[0027] Example 4 like Figure 2-Figure 3As shown, the top surface of the carrier body 401 is provided with a second groove 4012 having the same number as the first groove 4023, and the inner diameters of the first groove 4023 and the second groove 4012 on the same vertical surface are consistent. The bottom wall of the second groove 4012 is embedded with a second pressure sensor 4013 and a displacement encoder 4014. The second pressure sensor 4013 can monitor the pressure applied in the mold in real time to ensure that the pressure is within a reasonable range. By monitoring the pressure, overlap problems caused by excessive or insufficient pressure can be prevented. During the stamping process, the displacement encoder 4014 can record the precise position changes of the grounded round steel to ensure that it moves along a predetermined trajectory within the mold to avoid deviations. The working principles and working processes of the two are relatively mature existing technologies, so they will not be described in detail here.

[0028] The second groove 4012 consists of a straight portion and a concave portion. When the bottom of the secondary support body 402 is aligned with the bottom wall of the rectangular notch of the main support body 401, the straight portion of the first groove 4023 and the second groove 4012 on the same vertical surface are coaxial. This ensures that the main portions of the two grounding cylinders remain aligned after mechanical engagement.

[0029] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A grounded round steel punching device, comprising a lifting structure (2) mounted on top of a base (1), characterized in that: A limiting structure (3) is installed on the top surface of the base (1), a lower mold (4) is plugged into the limiting structure (3), and an upper mold (5) is provided above the lower mold (4) and is detachably assembled with the lifting structure (2); The lower mold (4) includes a supporting body (401) and a supporting sub-body (402). A rectangular notch is provided on one side of the top surface of the supporting body (401), so that the supporting body (401) forms a stepped top surface. The supporting sub-body (402) is located at the rectangular notch of the supporting body (401) and is consistent with the shape and size of the rectangular notch. A notch (4011) is provided on the bottom wall of the rectangular notch of the supporting body (401). A pressure sensor 1 (403) is embedded in the edge of the top surface of the supporting body (401). An electric push rod (404) electrically connected to the pressure sensor 1 (403) is detachably installed on the bottom wall of the notch (4011), and the rising and falling rates of the electric push rod (404) are consistent with those of the lifting structure (2). The electric push rod (404) is used to lift the supporting sub-body (402) so that its top surface is higher than the top surface of the supporting body (401), forming a height difference greater than the diameter of the grounded round steel.

2. The grounded round steel punching device according to claim 1, characterized in that: The bearing secondary body (402) comprises a solid block (4021) and a supporting plate (4022) arranged above the solid block (4021); a top surface of the supporting plate (4022) is provided with a plurality of first grooves (4023) of different inner diameters; a top surface of the solid block (4021) is provided with a columnar groove (4024); and an elastic support (4025) is connected between the columnar groove (4024) and the supporting plate (4022).

3. The grounded round steel punching device according to claim 2, characterized in that: When a grounded round steel is placed in one of the first grooves (4023), the distance between the supporting plate (4022) and the solid block (4021) is greater than 5 mm and smaller than the radius of the grounded round steel.

4. The grounded round steel punching device according to claim 2, characterized in that: The elastic support (4025) comprises a threaded disk fixedly mounted on the bottom wall of the columnar groove (4024) and the bottom of the supporting plate (4022); the outer surfaces of the two threaded disks are threadedly sleeved with covers, and a telescopic spring and a telescopic sleeve are installed between the two covers.

5. The grounded round steel punching device according to claim 1, characterized in that: The top surface of the carrier body (401) is provided with second grooves (4012) having the same number as the first grooves (4023), and the inner diameters of the first grooves (4023) and the second grooves (4012) on the same vertical surface are consistent, and the bottom wall of the second groove (4012) is embedded with a second pressure sensor (4013) and a displacement encoder (4014).

6. The grounded round steel punching device according to claim 5, characterized in that: The second groove (4012) consists of a straight portion and a concave portion. When the bottom of the secondary support body (402) is in contact with the bottom wall of the rectangular notch of the main support body (401), the straight portion of the first groove (4023) and the second groove (4012) on the same vertical surface are coaxial.

7. The grounded round steel punching device according to claim 1, characterized in that: The upper mold (5) comprises an upper mold body (501) and a slider (502) connected to the lifting structure (2), and the upper mold body (501) and the slider (502) are detachably connected via bolts.

8. The grounded round steel punching device according to claim 7, characterized in that: The upper mold body (501) is movably connected to a limiting hanging plate (503), and a limiting groove adapted to the second groove (4012) on the top surface of the supporting body (401) is provided at the bottom of the limiting hanging plate (503).

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