A high-precision guide system for a two-roller mill

Abstract

The application relates to a high-precision guide system of a two-roller rolling mill, which comprises a guide wheel centering type guide device, a lever type elastic guide device and a roller group, the guide wheel centering type guide device and the lever type elastic guide device are arranged in a longitudinal and horizontal staggered mode in pairs, the longitudinal roller group is arranged between the longitudinally arranged guide wheel centering type guide device and the lever type elastic guide device, and the transverse roller group is arranged between the transversely arranged guide wheel centering type guide device and the lever type elastic guide device; the guide wheel centering type guide device and the lever type elastic guide device are arranged in a longitudinal and horizontal staggered mode in pairs, the rolling piece is systematically guided, damped and lubricated, the round and smooth type change of the rolling piece is realized, qualified rolling rod blanks are provided for subsequent large-drawing, medium-drawing, micro-drawing, wire bundling and stranding, and the high-quality requirements of the rolling piece in the new energy automobile and electronic product fields, the medium and micro-drawing wire harnesses for high-speed rail contact networks and the load-bearing cables through large-drawing single-wire stranding are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal bar and wire rod rolling mill, in particular to a high-precision guide system of two-roller rolling mill. BACKGROUND

[0002] At present, when copper and copper alloy rods are rolled by two-roller rolling mill, there are high oil temperature, fast rolling speed, rolling piece shaking, serious rolling roller wear and frequent replacement, equipment gap increase; at the same time, the rolled material cannot be effectively supported and guided in time, and the collinearity between the rolled material and the roller pass cannot be formed, the increase of the elasticity of the rolled piece will cause quality defects such as scratching, twisting, ribbing, burr, cracks, cracks, ears, copper accumulation, powder slag, poor precision and other quality problems, which will cause wire breakage, burr and other quality problems during subsequent large-drawing, medium-drawing, micro-drawing and wire bundling, and finally lead to production stoppage, product scrap, increased manufacturing cost and reduced production efficiency. The medium and micro-drawing wire harness in the field of new energy vehicles and electronic products and the load-bearing cable through large-drawing single wire twisting for high-speed rail contact network have very high requirements for the quality of the rolled piece.

[0003] Based on this, the present application provides a high-precision guide system of two-roller rolling mill, which can reduce or even eliminate the quality defects of the rolled piece during the rolling of copper and copper alloy rods, reduce the shaking and twisting of the billet during rolling, and prevent quality accidents such as wire breakage, burr and crack during subsequent large-drawing, medium-drawing, micro-drawing, wire bundling and twisting, while ensuring the quality of the operating environment, improving the service life of the equipment, reducing the production cost, and improving the production efficiency. SUMMARY

[0004] The present application aims to overcome the above-mentioned deficiencies and provides a high-precision guide system of two-roller rolling mill, which is composed of guide wheel centered guide device and lever type elastic guide device arranged in longitudinal and transverse interlaced manner, and systematically guides, dampens and lubricates the rolled piece, realizes the round and smooth type change of the rolled piece, and provides qualified rolling billets for subsequent large-drawing, medium-drawing, micro-drawing, wire bundling and twisting, and ensures the high quality requirements of the rolled piece for the medium and micro-drawing wire harness in the field of new energy vehicles and electronic products and the load-bearing cable through large-drawing single wire twisting for high-speed rail contact network.

[0005] The purpose of the present application is achieved as follows:

[0006] A high-precision guide system of two-roller rolling mill, comprising a guide wheel centered guide device, a lever type elastic guide device and a roller group, the guide wheel centered guide device and the lever type elastic guide device are arranged in longitudinal and transverse interlaced manner, the longitudinal roller group is arranged between the longitudinally arranged guide wheel centered guide device and the lever type elastic guide device, and the transverse roller group is arranged between the transversely arranged guide wheel centered guide device and the lever type elastic guide device;

[0007] The guide wheel centering type guide device is formed by pairing and combining an upper guide module and a lower guide module, the upper guide module comprises an upper guide block and an upper guide wheel, the lower guide module comprises a lower guide block and a lower guide wheel, the upper guide block is provided with an upper guide groove with a trumpet-shaped inlet, the lower guide block is provided with a lower guide groove with a trumpet-shaped inlet, the upper guide groove is rotationally provided with an upper guide wheel in the middle, the lower guide groove is rotationally provided with a lower guide wheel in the middle, and the upper and lower guide grooves pair to form a first guide channel for the rolled material.

[0008] The lever type elastic guide device comprises a base frame, an upper seat frame, a guide body, a guide wheel and a compression adjusting assembly, the upper and lower symmetrical guide bodies are arranged in the corresponding seat frames, the guide bodies are provided with guide grooves, the upper and lower guide grooves pair to form a second guide channel, the base frame and the upper seat frame are hingedly connected in the middle, the upper and lower guide wheels are arranged at the outlet ends of the upper seat frame and the base frame respectively, and the compression adjusting assembly is arranged close to the inlet ends of the upper seat frame and the base frame.

[0009] The first guide channel, the second guide channel and the roller group are arranged on the same straight line.

[0010] Preferably, the two compression adjusting assemblies are arranged on the two sides of the guide body, the compression adjusting assembly comprises a spring, a screw rod and a screw cap, the bottom of the screw rod is fixed in the lower positioning hole of the base frame, the spring is sleeved on the screw rod, and the screw rod is screwed with the screw cap after penetrating through the upper seat frame.

[0011] Preferably, the upper guide wheel is provided with an upper guide wheel groove in the axial direction corresponding to the upper guide groove, the lower guide wheel is provided with a lower guide wheel groove in the axial direction corresponding to the lower guide groove, and the guide wheel is provided with a guide wheel groove corresponding to the guide groove, and the guide wheel groove is an extension of the guide groove.

[0012] Preferably, an oil cavity is arranged above the upper guide groove, the oil cavity is communicated with the upper guide groove through an oil outlet hole, and the top surface of the guide body arranged above is provided with an oil hole communicated with the guide groove.

[0013] Preferably, the two ends of the upper guide wheel are connected with upper locking blocks through bearings, the upper locking blocks are fixed to the upper guide block through bolts, the two ends of the lower guide wheel are connected with lower locking blocks through bearings, and the lower locking blocks are fixed to the lower guide block through bolts, the upper locking blocks and the lower locking blocks are wedge-shaped matched, the upper locking blocks are inserted into the wedge-shaped gap of the lower locking blocks through the protruding parts, and the left and right movements of the upper guide block are limited.

[0014] Preferably, the corresponding contact surfaces of the upper and lower guide blocks are respectively provided with a key and a key groove, the key and the key groove are matched, and the front and back movements of the upper guide block are limited.

[0015] Preferably, the upper and lower symmetrical guide bodies are fixed to the base frame through guide sealing blocks, the guide sealing blocks are arranged at the inlet ends of the guide bodies, the guide sealing blocks are fixed through bolts, the base frame is provided with threaded holes corresponding to the bolts, and the two threaded holes are symmetrically arranged on the two sides of the guide body.

[0016] Preferably, the upper and lower guide blocks and guide bodies are made of cold-rolled steel material, and the surface is plated with a wear-resistant chromium layer.

[0017] Preferably, the middle part of the base frame is provided with clamping columns on the left and right sides, the clamping columns clamp the upper seat frame, and a connecting shaft is arranged between the two clamping columns and penetrates through the upper seat frame.

[0018] The beneficial effects of the present application are:

[0019] The guide wheel is embedded in the middle part of the guide block, the sliding friction between the rolled material and the guide groove is changed into rolling friction, the two ends of the guide wheel are fixed on the guide block through the locking block to avoid shaking of the guide wheel, the guide groove and the guide wheel groove are consistent in type, and the rolled material is in a straight line type for rolling and stretching; the guide wheel and the pressing adjusting assembly are arranged on both sides of the hinge point of the upper seat frame and the base frame, the guide wheel is converted into elasticity, and the guide wheel groove and the guide groove are on the same central axis, which changes the sliding hard friction into elastic rolling friction, effectively tightens the rolled piece, reduces the shaking of the rolled piece during rolling, makes the wire smooth, eliminates the surface hard point, has good roundness, high precision, prevents the surface of the rolled material from being scratched, reduces the wear of the guide groove and the roller, and prolongs the service life of the equipment;

[0020] The end horn design facilitates the smooth entry of the rolled material into the guide channel, avoiding the risk of pile rods;

[0021] The reasonable angle of the oil outlet hole and the oil hole continuously sprays oil, effectively lubricates and cools the cold-rolled material, the guide wheel, the guide groove and the roller, speeds up the cooling cycle, and ensures the stability of the mechanical properties of the rolled piece;

[0022] The arc-shaped key has large friction resistance and can effectively control the movement of the upper guide block before and after the rolling; the upper locking block is inserted into the wedge opening of the lower locking block through the protruding part, effectively locking the left and right movement of the upper guide block, and reducing the shaking of the rolled material;

[0023] The upper and lower guide blocks and guide bodies are made of cold-rolled steel material, and the surface of the guide groove is plated with a wear-resistant chromium layer, the hardness is increased to 60HR, and the smoothness and wear resistance are greatly improved;

[0024] In summary, the guide wheel center type guide device and the lever type elastic guide device are combined longitudinally and transversely, which systematically guides, dampens and lubricates the rolled piece, realizes the round and smooth type change of the rolled piece, provides qualified rolling rod blanks for subsequent large-drawing, medium-drawing, micro-drawing, bunching and twisting, and ensures the high quality requirements of the rolled piece in the fields of new energy vehicles and electronic products. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure of the present application is shown in the figure.

[0026] Figure 2 It is the structural schematic view of the guide wheel centering type guide device.

[0027] Figure 3 It is the bottom view of the upper guide module.

[0028] Figure 4 It is the sectional view of the upper guide module.

[0029] Figure 5 It is the structural schematic view of the lower guide module.

[0030] Figure 6 It is the structural schematic view of the upper guide wheel (lower guide wheel).

[0031] Figure 7 It is the structural schematic view of the lever type elastic guide device.

[0032] Figure 8 It is the structural schematic view of the base frame.

[0033] Figure 9 It is the installation schematic view of the base frame and the upper and lower guide bodies.

[0034] Among them: guide wheel centering type guide device 1, upper guide block 1.1, key 1.1.1, upper guide wheel 1.2, upper guide wheel groove 1.2.1, upper lock block 1.3, lower guide block 1.4, keyway 1.4.1, lower guide wheel 1.5, lower guide wheel groove 1.5.1, lower lock block 1.6, upper guide groove 1.7, lower guide groove 1.8, oil cavity 1.9, oil outlet hole 1.10, lever type elastic guide device 2, base frame 2.1, fixing hole 2.1.1, sliding groove 2.1.2, upper seat frame 2.2, movable hole 2.2.1, guide body 2.3, guide groove 2.3.1, oil hole 2.3.2, guide wheel 2.4, guide wheel groove 2.4.1, spring 2.5, lead screw 2.6, screw cap 2.7, guide sealing block 2.8, oil guide pipe 2.9, clamping column 2.10, connecting shaft 2.11, roller group 3. Embodiment

[0035] Referring to Figure 1-9 , the application relates to a two-roller mill high-precision guide system, which comprises a guide wheel centering type guide device 1, a lever type elastic guide device 2 and a roller group 3, the guide wheel centering type guide device 1 and the lever type elastic guide device 2 are longitudinally and transversely arranged in pairs, the longitudinal roller group 3 is arranged between the longitudinally arranged guide wheel centering type guide device 1 and the lever type elastic guide device 2, and the transverse roller group 3 is arranged between the transversely arranged guide wheel centering type guide device 1 and the lever type elastic guide device 2.

[0036] The guide wheel centering guide device 1 is formed by the upper guide module and the lower guide module, the upper guide module comprises an upper guide block 1.1, an upper guide wheel 1.2 and an upper locking block 1.3, the lower guide module comprises a lower guide block 1.4, a lower guide wheel 1.5 and a lower locking block 1.6, the upper guide block 1.1 is provided with an upper guide groove 1.7 with a trumpet-shaped inlet, the lower guide block 1.4 is provided with a lower guide groove 1.8 with a trumpet-shaped inlet, the upper and lower guide grooves 1.7 and 1.8 form a first guide channel for the rolled material, the upper guide groove 1.7 is rotatably provided with the upper guide wheel 1.2 in the middle, the upper guide wheel 1.2 is connected to the upper locking block 1.3 through bearings at both ends, the upper locking block 1.3 is fixed on the upper guide block 1.1 through bolts, the upper guide block 1.1 is provided with an upper guide wheel accommodating groove with an opening downward corresponding to the upper guide wheel 1.2, the upper guide wheel 1.2 is provided with an upper guide wheel groove 1.2.1 corresponding to the upper guide groove 1.7 in the axial direction, the upper and lower guide wheels 1.2 and 1.5 correspond to each other, the lower guide wheel 1.5 is rotatably provided in the middle of the lower guide groove 1.8, the lower guide wheel 1.5 is connected to the lower locking block 1.6 through bearings at both ends, the lower locking block 1.6 is fixed on the lower guide block 1.4 through bolts, the lower guide block 1.4 is provided with a lower guide wheel accommodating groove with an opening upward corresponding to the lower guide wheel 1.5, the lower guide wheel 1.5 is provided with a lower guide wheel groove 1.5.1 corresponding to the lower guide groove 1.8 in the axial direction, the lower guide wheel groove 1.5.1 is in the same straight line with the lower guide groove 1.8, an oil cavity 1.9 is arranged above the upper guide groove 1.7, the oil cavity 1.9 is communicated with the upper guide groove 1.7 through oil outlet holes 1.10, two oil outlet holes 1.10 are arranged on the upper surface of the upper guide groove 1.7 and on the front and rear sides of the upper guide wheel 1.2, the oil is continuously sprayed through the oil outlet holes 1.10 at a reasonable angle to effectively lubricate the cold-rolled material, the guide wheel and the guide groove and the roller, the oil cavity 1.9 is filled with oil through an oil inlet hole, the emulsion stored in the oil cavity is used to lubricate and cool each guide groove, guide wheel and rolled piece, and to accelerate the cooling cycle.

[0037] The lever type elastic guide device 2 comprises a base frame 2.1, an upper seat frame 2.2, a guide body 2.3, a guide wheel 2.4 and a compression adjusting assembly. The upper seat frame 2.2 and the base frame 2.1 are each provided with a mounting cavity, and the upper and lower symmetrical guide bodies 2.3 are arranged in the corresponding mounting cavities. Each guide body 2.3 is provided with a guide groove 2.3.1 with a trumpet inlet. The upper and lower guide grooves 2.3.1 are paired to form a second guide channel. The base frame 2.1 is hingedly connected to the middle part of the upper seat frame 2.2. The guide wheels 2.4 are arranged one above the other at the outlet ends of the upper seat frame 2.2 and the base frame 2.1, respectively. The guide wheels 2.4 are rotatably connected to the upper seat frame 2.2 and the base frame 2.1, respectively. The guide wheels 2.4 are provided with guide wheel grooves 2.4.1 corresponding to the guide grooves 2.3.1. The guide wheel grooves 2.4.1 are extensions of the guide grooves 2.3.1. The guide grooves 2.3.1 and the guide wheel grooves 2.4.1 are of the same size and on the same central axis. The compression adjusting assembly is arranged close to the inlet ends of the upper seat frame 2.2 and the base frame 2.1. Two compression adjusting assemblies are arranged on the left and right sides of the guide body 2.3. The compression adjusting assembly comprises a spring 2.5, a screw rod 2.6 and a screw cap 2.7. The bottom of the screw rod 2.6 is fixed in the lower positioning hole of the base frame 2.1. The spring 2.5 is sleeved on the screw rod 2.6. The screw rod 2.6 with the spring 2.5 is screwed with the screw cap 2.7 after passing through the upper seat frame 2.2. The upper seat frame 2.2 is provided with an upper positioning hole corresponding to the lower positioning hole. The upper and lower positioning holes are matched to accommodate the screw rod 2.6 and the spring 2.5. The compression of the spring 2.5 is adjusted by adjusting the screw cap 2.7 on the screw rod 2.6, that is, the compression of the guide wheel 2.4 is controlled. The guide wheel located above is converted into an elastic guide wheel, so that the sliding hard friction of the rolled piece with the guide groove is changed into elastic rolling friction.

[0038] The upper and lower guide blocks 1.1 and 1.4 and the guide body 2.3 are made of cold-rolled steel material and are plated with a wear-resistant chromium layer on the surface. The hardness is increased to 60HR, and the smoothness and wear resistance are greatly improved.

[0039] The upper and lower guide blocks 1.1 and 1.4 are respectively provided with a key 1.1.1 and a key groove 1.4.1 on the corresponding contact surfaces. The key 1.1.1 and the key groove 1.4.1 are matched. The arc-shaped key 1.1.1 has large friction resistance, effectively controls the forward and backward movement of the upper guide block 1.1 during rolling, and reduces the shaking of the rolled material. The key 1.1.1 is arranged close to the trumpet inlets of the upper guide grooves 1.7 and on the left and right sides of the upper guide grooves 1.7. The key groove 1.4.1 is arranged close to the trumpet inlets of the lower guide grooves 1.8 and on the left and right sides of the lower guide grooves 1.8.

[0040] The upper and lower locking blocks 1.3 and 1.6 are wedge-shaped matched. The upper locking block 1.3 is inserted into the wedge opening of the lower locking block 1.6 through the protruding part, effectively locks the left and right movement of the upper guide block 1.1, and reduces the shaking of the rolled material.

[0041] The upper and lower symmetrical guide body 2.3 is fixed on the base frame 2.1 by a guide block 2.8 arranged at the inlet end of the guide body 2.3, and the guide block 2.8 is fixed by bolts, and the base frame 2.1 is provided with threaded holes corresponding to the bolts, and the two threaded holes are symmetrically arranged on both sides of the guide body 2.3.

[0042] The top surface of the upper guide body 2.3 is provided with oil holes 2.3.2, and the oil holes 2.3.2 are communicated with the guide grooves 2.3.1, and the oil holes 2.3.2 are provided with two, one is arranged at the inlet end of the guide body 2.3, and the other is arranged at the middle part of the guide body 2.3, and the oil pipe 2.9 is connected with the oil hole 2.3.2, and the guide sealing plate 8 is provided with an oil pipe hole corresponding to the oil pipe 2.9 at the inlet end, and the upper seat frame 2.2 is provided with a movable hole 2.2.1 corresponding to the oil pipe 2.9 at the middle part, and the movable hole 2.2.1 is larger than the outer diameter of the oil pipe, so as to facilitate the swing of the upper seat frame 2.2.

[0043] The base frame 2.1 is provided with clamping columns 2.10 on the left and right sides of the middle part, the clamping columns 2.10 clamp the upper seat frame 2.2, and the connecting shaft 2.11 is arranged between the two clamping columns 2.10, and the connecting shaft 2.11 penetrates the upper seat frame 2.2.

[0044] The base frame 2.1 is also provided with a fixing hole 2.1.1, and the fixing hole 2.1.1 fixes the guide device as a whole on the rolling mill frame by bolts, and the base frame 2.1 is also provided with a sliding groove 2.1.2 at the bottom, and the sliding groove 2.1.2 facilitates the relative fixation of the guide device and the rolling mill frame without displacement.

[0045] In addition to the above-mentioned embodiments, the present application also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the claims of the present application.

Claims

1. A high-precision guide system for a two-roll mill, characterized in that: It includes a guide wheel centering guide device, a lever-type elastic guide device, and a roll assembly. The guide wheel centering guide device and the lever-type elastic guide device are arranged in pairs in a crisscross pattern. The longitudinal roll assembly is set between the longitudinally arranged guide wheel centering guide device and the lever-type elastic guide device, and the transverse roll assembly is set between the transversely arranged guide wheel centering guide device and the lever-type elastic guide device. The guide wheel center-type guide device is formed by the pairing and combination of an upper guide module and a lower guide module. The upper guide module includes an upper guide block and an upper guide wheel, and the lower guide module includes a lower guide block and a lower guide wheel. The upper guide block is provided with an upper guide groove with a horn inlet, and the lower guide block is provided with a lower guide groove with a horn inlet. The upper guide wheel is rotatably mounted in the middle of the upper guide groove, and the lower guide wheel is rotatably mounted in the middle of the lower guide groove. The upper and lower guide grooves are paired to form the first guide channel for the rolled material. The lever-type elastic guide device includes a base frame, an upper frame, guide bodies, guide wheels, and a pressure adjustment assembly. The upper and lower symmetrical guide bodies are arranged in the corresponding frames. The guide bodies are provided with guide grooves. The upper and lower guide grooves are paired to form a second guide channel. The base frame and the upper frame are hinged in the middle. The guide wheels are arranged one above the other at the outlet end of the upper frame and the base frame, respectively. The pressure adjustment assembly is close to the inlet end of the upper frame and the base frame. The first guide channel, the second guide channel, and the roll group are on the same straight line; Guide wheels and pressure adjustment components are respectively set on both sides of the hinge point of the upper frame and the base frame. The guide wheels are transformed into elastic ones, and the guide wheel groove and the guide groove are on the same central axis, which transforms the sliding hard friction into elastic rolling friction. The upper guide wheel is connected to the upper locking block at both ends by bearings. The upper locking block is fixed to the upper guide block by bolts. The lower guide wheel is connected to the lower locking block at both ends by bearings. The lower locking block is fixed to the lower guide block by bolts. The upper locking block and the lower locking block are wedge-shaped. The upper locking block is inserted into the wedge of the lower locking block through a protrusion to restrict the left and right movement of the upper guide block. The upper and lower guide blocks are respectively provided with convex keys and keyways on their corresponding contact surfaces. The convex keys and keyways cooperate to restrict the upper guide block from moving back and forth.

2. The high-precision guide system for a two-roll mill according to claim 1, characterized in that: Two clamping adjustment components are arranged on the left and right sides of the guide body. Each clamping adjustment component includes a spring, a lead screw, and a screw cap. The bottom of the lead screw is fixed in the lower positioning hole of the base frame, the spring is sleeved on the lead screw, and the lead screw passes through the upper base frame and is screwed with a screw cap.

3. The high-precision guide system for a two-roll mill according to claim 1, characterized in that: The upper guide wheel is provided with an upper guide wheel groove corresponding to the upper guide groove in the axial direction, and the lower guide wheel is provided with a lower guide wheel groove corresponding to the lower guide groove in the axial direction. The guide wheel is provided with a guide wheel groove corresponding to the guide groove, and the guide wheel groove is an extension of the guide groove.

4. The high-precision guide system for a two-roll mill according to claim 1, characterized in that: An oil cavity is provided above the upper guide groove, and the oil cavity is connected to the upper guide groove through an oil outlet hole. An oil hole is provided on the top surface of the guide body located above, and the oil hole is connected to the guide groove.

5. The high-precision guide system for a two-roll mill according to claim 1, characterized in that: The symmetrical guide bodies are fixed to the base frame by guide blocks. The guide blocks are located at the inlet end of the guide bodies and are fixed by bolts. The base frame has threaded holes corresponding to the bolts, and the two threaded holes are symmetrically arranged on both sides of the guide bodies.

6. The high-precision guide system for a two-roll mill according to claim 1, characterized in that: The upper and lower guide blocks and guide bodies are made of cold-rolled steel and are plated with a wear-resistant chromium layer.

7. The high-precision guide system for a two-roll mill according to claim 1, characterized in that: The base frame is provided with clamping columns on the left and right sides of the middle section. The clamping columns clamp the upper base frame. A connecting shaft is provided between the two clamping columns and passes through the upper base frame.

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