Steel plate heating and bending device

Abstract

The utility model discloses a steel plate heating and bending device, and relates to the technical field of heat exchange equipment production. The dumbbell comprises a base block, two U-shaped frames, a shaft rod, a bending shaft and a first lantern ring, annular grooves are formed in the two U-shaped frames, base plates are arranged in the annular grooves, the shaft rod is jointly fixed to the opposite faces of the two base plates, a dumbbell ring is movably connected into each annular groove, and the bending shaft is jointly rotationally connected to the opposite faces of the two dumbbell rings; a base block is arranged in front of the U-shaped frame, an electromagnetic coil is fixed to one side of the base block, an electromagnetic heater is fixed to the other side of the base block, and the electric output end of the electromagnetic heater is electrically connected with the electromagnetic coil. Through the arrangement of the base block, the electromagnetic heater, the bending shaft, the shaft rod, the U-shaped frame and the electromagnetic coil, the problems that when a steel plate is locally bent, the heating time is long, the heating shape fluctuation is large, the heating shape is unstable at present, open fire exists in the heating process, and the safety is poor are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchange equipment production, and particularly relates to a steel plate heating and bending device. Background Art

[0002] A spiral plate heat exchanger is a heat exchanger in which two parallel metal plates are coiled into two spiral channels, and heat exchange between hot and cold fluids is carried out through the spiral plate wall. There are two types of spiral plate heat exchangers: detachable and non-detachable. During the production process of a spiral plate heat exchanger, after coiling, it is necessary to close the ends to make the inlets and outlets of the fluid. During the end-closing process, local bending treatment of the steel plate is required, but there are still the following drawbacks in the actual bending treatment process:

[0003] In order to facilitate the bending treatment, currently, gas cutting is used to heat-treat the bending part of the steel plate to soften the local part of the steel plate, and then the bending treatment is carried out to make the inlets and outlets of the spiral plate heat exchanger.

[0004] Although the above method solves the problem of local bending treatment of the steel plate during the production process, this process has problems such as long heating time, large fluctuations in the heating shape, unstable current, open fire during the heating process, and poor safety. At present, there is a lack of a safe, fast, and simple production process for local heating and bending of steel plates. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a steel plate heating and bending device. By setting a base block, an electromagnetic heater, a bending shaft, a shaft rod, a U-shaped frame, and an electromagnetic coil, the problems of long heating time, large fluctuations in the heating shape, unstable current, open fire during the heating process, and poor safety during local bending of the steel plate are solved.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model is a steel plate heating and bending device, which includes a base block, two U-shaped frames, a shaft rod, a bending shaft, and a first collar. Ring grooves are provided in both of the two U-shaped frames. A substrate is arranged in the ring groove. A shaft rod is fixedly connected to the opposite surfaces of the two substrates. A dumbbell ring is movably connected to each of the ring grooves, and a bending shaft is rotatably connected to the opposite surfaces of the two dumbbell rings.

[0008] The base block is arranged in front of the U-shaped frame. An electromagnetic coil is fixed to one side of the base block, and an electromagnetic heater is fixed to the other side of the base block. The electrical output end of the electromagnetic heater is electrically connected to the electromagnetic coil.

[0009] Further, both the upper and lower ends of the base block are fixed with end heads, and a connecting rod is fixed to one end of the end head facing the U-shaped frame. Limit rings are fixed to both the upper and lower ends of the U-shaped frame close to the base block, and a limit block is fixed to the end of the connecting rod away from the end head after passing through the limit ring.

[0010] Further, an X-shaped bracket is fixedly connected to the opposite surfaces of the upper ends of the two U-shaped frames, and the X-shaped bracket is located above the shaft rod and the bending shaft.

[0011] Further, a connecting member passing through the annular groove is fixed to the outer periphery of the base plate, and the base plate is fixedly connected to the U-shaped frame through the connecting member, and both ends of the dumbbell ring are located outside the annular groove.

[0012] Further, a first support rod is rotatably connected to the opposite surfaces of the two base plates, and a second support rod is fixed to the opposite surfaces of the two dumbbell rings. The inner diameter of the shaft rod is larger than the inner diameter of the bending shaft.

[0013] Further, a first collar is rotatably connected to the outside of the second support rod, a second collar is fixed to the outside of the first support rod, a connecting rod is fixed between the first collar and the second collar, and a handle is further fixed to the position of the outer periphery of the first collar opposite to the connecting rod.

[0014] The utility model has the following beneficial effects:

[0015] By providing a base block, an electromagnetic heater, a bending shaft, a shaft rod, a U-shaped frame, and an electromagnetic coil, the utility model solves the problems of long heating time and large fluctuation in heating shape during local bending of steel plates. The utility model no longer uses the traditional gas cutting method for steel plate bending treatment. The electromagnetic heater is connected to an external control cabinet. After the electromagnetic heater is powered on, using the principle of electromagnetic induction, the electromagnetic coil is powered on, and eddy currents are generated locally in the steel plate around the electromagnetic coil, heating from the inside to the outside. By controlling the frequency and magnitude of the current, the heating process and degree of the steel plate are controlled, so that the steel plate around the electromagnetic coil is heated (the electromagnetic coil can change the corresponding shape according to the requirements of the bending process, heating out the corresponding lines to meet the production needs of the equipment). Subsequently, the electromagnetic coil is removed, and the shaft rod is moved to the lower part of the just-heated position. At this time, the bending shaft is located above the steel plate. Then, by controlling the bending shaft to rotate along the annular groove through the handle, the steel plate can be bent quickly and accurately; the whole process has a short heating time, an accurate heating shape, and higher bending efficiency.

[0016] By providing a base block, an electromagnetic heater, and an electromagnetic coil, the utility model solves the problem of open fire in the heating process of steel plates and poor safety; the electromagnetic heater is used to power on the electromagnetic coil for heating, and the principle of electromagnetic induction is used to heat the local position of the steel plate, without open fire, and the whole process is relatively safe and reliable. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the attached drawings required for describing the embodiments will be briefly introduced below.

[0018] Figure 1 Stereogram of a steel plate heating and bending device of the present kind;

[0019] Figure 2 For Figure 1 Structural diagram from another perspective;

[0020] Figure 3 State diagram of a steel plate heating and bending device when heating a steel plate;

[0021] Figure 4 State diagram of a steel plate heating and bending device when bending a steel plate;

[0022] Figure 5 Connection diagram of the U-shaped frame, shaft rod, and bending shaft;

[0023] Figure 6 State diagram of the bending shaft when bending a steel plate;

[0024] Figure 7 Connection diagram of the U-shaped frame and the shaft rod;

[0025] Figure 8 Connection diagram of the bending shaft and the first collar.

[0026] Reference numerals:

[0027] 1. Base block; 101. Electromagnetic coil; 102. Electromagnetic heater; 103. End; 2. Connecting rod; 201. Limit block; 3. U-shaped frame; 301. Limit ring; 302. X-shaped bracket; 303. Ring groove; 304. Base plate; 3041. Connecting piece; 305. First support rod; 4. Shaft rod; 5. Bending shaft; 501. Dumbbell ring; 502. Second support rod; 6. First collar; 601. Second collar; 602. Connecting rod; 603. Handle. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present utility model.

[0029] Please refer to Figure 1-8 As shown, the present utility model is a steel plate heating and bending device, including a base block 1, two U-shaped frames 3, a shaft rod 4, a bending shaft 5, and a first collar 6. Ring grooves 303 are provided in both of the two U-shaped frames 3. A base plate 304 is arranged in the ring groove 303. A shaft rod 4 is fixedly connected together on the opposite surfaces of the two base plates 304. A dumbbell ring 501 is movably connected in each ring groove 303, and a bending shaft 5 is rotatably connected together on the opposite surfaces of the two dumbbell rings 501;

[0030] As Figure 4 , the shaft rod 4 is relatively fixed with the substrate 304 in the U-shaped frame 3. During bending, the shaft rod 4 is located below the steel plate, and the bending shaft 5 is located above the steel plate. The bending shaft 5 is connected to the annular groove 303 through the dumbbell ring 501, so that the bending shaft 5 moves along the shape of the annular groove 303. Thus, the bending shaft 5 presses the steel plate from above and bends the steel plate along the outer peripheral surface of the shaft rod 4.

[0031] A base block 1 is arranged in front of the U-shaped frame 3. An electromagnetic coil 101 is fixed on one side of the base block 1, and an electromagnetic heater 102 is fixed on the other side of the base block 1. The electrical output end of the electromagnetic heater 102 is electrically connected to the electromagnetic coil 101.

[0032] As Figure 3 , the electromagnetic heater 102 is connected to an external control cabinet. After the electromagnetic heater 102 is powered on, using the principle of electromagnetic induction, the electromagnetic coil 101 is powered on, and eddy currents are locally generated in the steel plate around the electromagnetic coil 101 and heated from the inside to the outside. By controlling the frequency and magnitude of the current, the heating process and degree of the steel plate are controlled, so that the steel plate around the electromagnetic coil 101 is heated.

[0033] Both the upper and lower ends of the base block 1 are fixed with end heads 103, and a connecting rod 2 is fixed at one end of the end head 103 facing the U-shaped frame 3. Limit rings 301 are fixed at both the upper and lower ends of the U-shaped frame 3 close to the base block 1. One end of the connecting rod 2 far from the end head 103 passes through the limit ring 3 and is fixed with a limit block 201.

[0034] During the operation of heating and bending the steel plate by the electromagnetic coil 101, the base block 1 and the U-shaped frame 3 need to be as far away as possible to avoid mutual interference. Therefore, the base block 1 is relatively connected to the U-shaped frame 3 through the connecting rod 2. The upper end of the base block 1 fixes the connecting rod 2 through the end head 103. The other end of the connecting rod 2 is inserted into the limit ring 301 and limited by the limit block 201, so that the maximum distance between the base block 1 and the U-shaped frame 3 is the length of the connecting rod 2. When storing, the base block 1 and the U-shaped frame 3 approach each other, and the relative position can be kept stable by cooperating with the connecting rod 2.

[0035] X-shaped brackets 302 are commonly fixed on the opposite surfaces of the upper ends of the two U-shaped frames 3, and the X-shaped brackets 302 are located above the shaft rod 4 and the bending shaft 5.

[0036] The two U-shaped frames 3 are connected and fixed by the X-shaped brackets 302 to maintain stability.

[0037] A connecting member 3041 passing through the annular groove 303 is fixed on the outer periphery of the substrate 304, and the substrate 304 is fixedly connected to the U-shaped frame 3 through the connecting member 3041. Both ends of the dumbbell ring 501 are located outside the annular groove 303.

[0038] The substrate 304 is connected to the U-shaped frame 3 by a connecting member 3041 to maintain a stable position. The connecting members 3041 are distributed at an angle of 45° with respect to the center of the substrate 304. The dumbbell ring 501, together with the bending shaft 5, can move and rotate along the shape of the ring groove 303.

[0039] On the opposite sides of the two substrates 304, there are rotatably connected first support rods 305. On the opposite sides of the two dumbbell rings 501, there are fixed second support rods 502. The inner diameter of the shaft rod 4 is larger than the inner diameter of the bending shaft 5.

[0040] There is a first collar 6 rotatably connected to the outside of the second support rod 502. There is a second collar 601 fixed to the outside of the first support rod 305. A connecting rod 602 is fixed between the first collar 6 and the second collar 601. And at a position on the outer circumference of the first collar 6 opposite to the connecting rod 602, there is also fixed a handle 603.

[0041] The bending shaft 5 rotates around the shaft rod 4. By operating the handle 603, the second collar 601 and the first support rod 305 are driven to rotate outside the substrate 304. At the same time, under the connection of the connecting rod 602, the first collar 6 and the second support rod 502 are driven to move along the ring groove 303. Since the second support rod 502 is fixed to the dumbbell ring 501, the second support rod 502 can perform a certain amount of self-rotation within the first collar 6, and the bending shaft 5 itself can also perform self-rotation to avoid adverse effects during bending.

[0042] The specific working principle of the present utility model is as follows: First, when bending a steel plate, it needs to be heated first and then bent. Therefore, the part of the steel plate that needs to be bent is placed in the area surrounded by the electromagnetic coil 101. The electromagnetic heater 102 is connected to an external control cabinet. After the electromagnetic heater 102 is powered on, using the principle of electromagnetic induction, the electromagnetic coil 101 is powered on, and eddy currents are generated locally in the steel plate surrounded by the electromagnetic coil 101, heating from the inside to the outside. Subsequently, the electromagnetic coil 101 is removed, and the shaft rod 4 is moved to the lower part of the just-heated area. At this time, the bending shaft 5 is located above the steel plate. The bending shaft 5 rotates around the shaft rod 4. By operating the handle 603, the second collar 601 and the first support rod 305 are driven to rotate outside the substrate 304. At the same time, under the connection of the connecting rod 602, the first collar 6 and the second support rod 502 are driven to move along the ring groove 303. The bending shaft 5 presses the steel plate from above and bends the steel plate along the outer peripheral surface of the shaft rod 4.

[0043] The above are only the preferred embodiments of the present utility model and do not limit the present utility model. Any modification to the technical solutions recorded in the foregoing embodiments, any equivalent replacement of some technical features, and any modification, equivalent replacement, and improvement made are all within the protection scope of the present utility model.

Claims

1. A steel plate heating and bending device, comprising a base block (1), two U-shaped frames (3), a shaft rod (4), a bending shaft (5) and a first collar (6), characterized in that: Ring grooves (303) are formed in both of the two U-shaped frames (3). A substrate (304) is arranged in the ring groove (303). A shaft rod (4) is fixedly connected to the opposite surfaces of the two substrates (304). A dumbbell ring (501) is movably connected in each of the ring grooves (303). A bent shaft (5) is rotatably connected to the opposite surfaces of the two dumbbell rings (501). A base block (1) is arranged in front of the U-shaped frame (3). An electromagnetic coil (101) is fixedly connected to one side of the base block (1), and an electromagnetic heater (102) is fixedly connected to the other side of the base block (1). The electrical output end of the electromagnetic heater (102) is electrically connected to the electromagnetic coil (101).

2. The steel plate heating and bending device according to claim 1, characterized in that: End heads (103) are fixedly connected to the upper and lower ends of the base block (1). A connecting rod (2) is fixedly connected to the end of the end head (103) facing the U-shaped frame (3). Limit rings (301) are fixedly connected to the upper and lower ends of the U-shaped frame (3) close to the base block (1). The end of the connecting rod (2) away from the end head (103) passes through the limit ring (301) and is fixedly connected to a limit block (201).

3. The steel plate heating and bending device according to claim 1, characterized in that: An X-shaped bracket (302) is fixedly connected to the opposite surfaces of the upper ends of the two U-shaped frames (3), and the X-shaped bracket (302) is located above the shaft rod (4) and the bent shaft (5).

4. A steel plate heating and bending device according to claim 1, characterized in that: A connecting member (3041) passing through the ring groove (303) is fixedly connected to the outer periphery of the substrate (304), and the substrate (304) is fixedly connected to the U-shaped frame (3) through the connecting member (3041). The two ends of the dumbbell ring (501) are located outside the ring groove (303).

5. A steel plate heating and bending device according to claim 1, characterized in that: A first support rod (305) is rotatably connected to the opposite surfaces of the two substrates (304). A second support rod (502) is fixedly connected to the opposite surfaces of the two dumbbell rings (501). The inner diameter of the shaft rod (4) is larger than the inner diameter of the bent shaft (5).

6. The steel plate heating and bending device according to claim 5, characterized in that: A first sleeve (6) is rotatably connected to the outside of the second support rod (502). A second sleeve (601) is fixedly connected to the outside of the first support rod (305). A connecting rod (602) is fixedly connected between the first sleeve (6) and the second sleeve (601). A handle (603) is fixedly connected to the position of the outer periphery of the first sleeve (6) opposite to the connecting rod (602).

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