Collapsible drum device and strip coiling machine

Abstract

The utility model discloses a collapsible drum device and a strip coiling machine, and belongs to the technical field of uncoiling of metal plate strip material coils. A collapsible drum device is characterized in that the collapsible drum device comprises a guide disc, an axial driving device and a collapsible device, the collapsible drum device is novel and reasonable in structure and based on ingenious mechanical structure design, a hydraulic system and electromechanical equipment do not need to be specially configured, a lead screw can be manually driven to rotate through a lead screw wrench, and the collapsible function of the collapsible drum device is achieved; operation is easy and convenient, and the requirements of existing shearing machines, uncoiling machines and the like for metal plate strip material coil uncoiling are met. Due to the fact that a hydraulic system and electromechanical equipment are omitted, the equipment structure is simplified, the occupied area of the equipment is reduced, meanwhile, the manufacturing cost and the maintenance cost are reduced, the safety of field operation is improved, and potential safety hazards caused by the hydraulic system or the electromechanical equipment are avoided. The strip coiling machine comprises the collapsible winding drum device and has all the characteristics of the collapsible winding drum device, and there is no need to do more detailed description.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the metal plate strip material roll opening technology field relates to the reel expansion and contraction technology when the metal plate strip material roll is opened, especially relates to a kind of expansion and contraction reel device and strip material coiler. BACKGROUND

[0002] The existing strip material coiler for metal plate strip material roll mainly has the following problems and deficiencies: the expansion and contraction reel structure is complex, the floor area is large, the operation difficulty is big, generally needs to specially configure hydraulic system and some electromechanical equipment, and the manufacturing cost and maintenance cost are relatively high, which is not conducive to the use of finished product cutting machine or uncoiler.Moreover, due to the use of hydraulic system and electromechanical equipment, the safety risk coefficient also increases. INVENTION CONTENTS

[0003] The utility model discloses a kind of novel expansion and contraction reel device and strip material coiler, to solve the structure complex of above-mentioned existing expansion and contraction reel device, floor area is large, operation difficulty is big, and because need specially configure hydraulic system and some electromechanical equipment, leading to manufacturing cost, maintenance cost, safety risk coefficient higher problem.

[0004] To achieve the above object, the utility model provides the following scheme:

[0005] The utility model provides a kind of expansion and contraction reel device, including guide disc, axial drive device and expansion and contraction diameter device, wherein:

[0006] The guide disc is provided with a plurality of "T" type sliding grooves along its circumferential direction, and any "T" type sliding groove is arranged along the radial direction of the guide disc;

[0007] The axial drive device includes sleeve, lead screw and mandrel, the first end of the mandrel is coaxially connected with the guide disc;The sleeve is coaxially sleeved on the outside of the mandrel, and is close to the second end of the mandrel, the sleeve is keyed to the mandrel, and the sleeve can move along the axial direction of the mandrel relative to the mandrel;The second end of the mandrel is provided with internal trapezoidal transmission thread, the first end of the lead screw is provided with external trapezoidal transmission thread, the lead screw is rotated into the internal trapezoidal transmission thread by the external trapezoidal transmission thread, and is coaxially connected with the mandrel;The second end of the sleeve is provided with bearing seat, the second end of the lead screw penetrates through the bearing seat, and is rotationally connected with the bearing seat by bearing;The second end of the lead screw is provided with manual drive structure;

[0008] The expanding and contracting device comprises inner sliding blocks, outer sliding blocks and arc-shaped plates, the outer circumferential surface of the sleeve is provided with a plurality of the inner sliding blocks in the circumferential direction, the outer circle surface of any one of the inner sliding blocks is arranged at an angle α with the central axis of the sleeve, the outer sliding block is arranged on the outer circle of the inner sliding block, and the "T"-shaped sliding groove, the inner sliding block and the outer sliding block are arranged one by one in correspondence; the inner circle surface of any one of the outer sliding blocks is adapted to the slope of the outer circle surface of the corresponding inner sliding block, and the outer sliding block is in inclined surface contact with the corresponding inner sliding block, the first end of the outer sliding block is in sliding guide cooperation with the corresponding "T"-shaped sliding groove; the outer circle surface of any one of the outer sliding blocks is provided with one of the arc-shaped plates, and the outer arc surfaces of all the arc-shaped plates are located on the same circumferential surface coaxial with the sleeve; the outer part of all the arc-shaped plates is used for sleeving a metal plate strip material roll, the manual driving structure is manually driven, the lead screw is driven to rotate, and the expansion and contraction adjustment of all the arc-shaped plates is realized.

[0009] Preferably, the manual driving structure is a square shaft head capable of adapting to a square hole of a manual wrench.

[0010] Preferably, the center of the guide disc is provided with a mandrel mounting hole, the first end of the mandrel is in shaft hole cooperation with the mandrel mounting hole and is in key connection or welding with the mandrel mounting hole.

[0011] Preferably, the outer periphery of the mandrel mounting hole is uniformly provided with a plurality of "T"-shaped sliding grooves, and the large end of any one of the "T"-shaped sliding grooves faces the mandrel mounting hole.

[0012] Preferably, the outer circle surface of any one of the inner sliding blocks is provided with an inner sliding block sliding groove, and the inner circle surface of any one of the outer sliding blocks is provided with a sliding boss slidingly adapted to the inner sliding block sliding groove.

[0013] Preferably, the two sides of any one of the inner sliding blocks are provided with coupling plates, the coupling plates are higher than the outer circle surface of the inner sliding block, and the inner side outer end of any one of the coupling plates is provided with a coupling plate boss; the two sides of any one of the outer sliding blocks are provided with first sliding grooves adapted to the coupling plate boss, and the coupling plate boss is slidingly and fitly installed with the first sliding groove of the corresponding outer sliding block.

[0014] Preferably, the first end of any one of the outer sliding blocks is provided with a second sliding groove, and the outer sliding block is slidingly and fitly installed with the corresponding "T"-shaped sliding groove through the second sliding groove.

[0015] Preferably, the inner arc surface center of the arc-shaped plate is provided with an outer sliding block mounting groove along the central axis of the sleeve, the arc-shaped plate is sleeved on the outer plane of the corresponding outer sliding block through the outer sliding block mounting groove, and is fixed with the outer sliding block through a bolt.

[0016] Preferably, the outer ring surface of the inner slider and the inner ring surface of the outer slider are both provided with a plurality of inclined surfaces in the axial direction of the sleeve, and the inclined surfaces of the inner ring surface of the outer slider correspond to the inclined surfaces of the outer ring surface of the inner slider one by one.

[0017] Preferably, the mandrel is provided with a mandrel key groove, and a key with a size adapted to the mandrel key groove is arranged in the mandrel key groove; the inner circle of the sleeve is provided with a sleeve key groove, and the length of the sleeve key groove is longer than that of the mandrel key groove, so that the sleeve can move along the axial direction of the mandrel relative to the mandrel.

[0018] The utility model provides a strip coiling machine, including the expansion and contraction reel device of above any one, the strip coiling machine with the orientation disc is connected, can drive the orientation disc rotates after the expansion and contraction reel device is tight to the metal plate strip material roll, to the metal plate strip material roll is uncoiling.

[0019] Compared with the prior art, the utility model has the following technical effects:

[0020] The expansion and contraction reel device provided by the utility model has novel and reasonable structure, does not need to specially configure hydraulic system and electromechanical equipment based on ingenious mechanical structure design, and manual rotation of the lead screw can be manually driven by the lead screw wrench, realizes the expansion and contraction function of the expansion and contraction reel device, is easy and simple to operate, satisfies the demand of the uncoiling of the metal plate strip material roll of the shearing machine, uncoiler and the like. Since the hydraulic system and electromechanical equipment are omitted, not only the equipment structure is simplified, and the equipment floor area is reduced, but also the manufacturing cost and maintenance cost are reduced, the safety of on-site operation is improved, and the safety hidden danger caused by the hydraulic system or electromechanical equipment is avoided.

[0021] The strip coiling machine provided by the utility model contains the above-mentioned expansion and contraction reel device and has all the features of the above-mentioned expansion and contraction reel device, and details are not repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating laboriously.

[0023] Figure 1 It is a whole structure schematic view of the expansion and contraction reel device disclosed in one or more embodiments.

[0024] Figure 2 It is a front view of the orientation disc disclosed in one or more embodiments.

[0025] Figure 3 for Figure 2 AA cross-section view;

[0026] Figure 4 This is a schematic diagram of the structure of the inner slider disclosed in one or more embodiments;

[0027] Figure 5 for Figure 4 BB cross-section;

[0028] Figure 6 This is a schematic diagram of the structure of the external slider disclosed in one or more embodiments;

[0029] Figure 7 for Figure 6 A bottom view;

[0030] Figure 8 for Figure 6 CC cross-section;

[0031] Figure 9 This is a schematic diagram of the structure of the arc-shaped plate disclosed in one or more embodiments;

[0032] Figure 10 for Figure 9 DD cross-section;

[0033] Figure 11 for Figure 9 EE cross-section;

[0034] Figure 12 This is a schematic diagram of the bearing housing structure disclosed in one or more embodiments;

[0035] Figure 13 This is a schematic diagram of the structure of the bearing housing cover disclosed in one or more embodiments;

[0036] Figure 14 This is a schematic diagram of the lead screw structure disclosed in one or more embodiments;

[0037] Figure 15 This is a schematic diagram of the mandrel structure disclosed in one or more embodiments;

[0038] Figure 16 This is a schematic diagram of the structure of the connecting plate disclosed in one or more embodiments;

[0039] Figure 17 for Figure 16 FF cross-section.

[0040] In the figure, the attached figures are labeled as follows:

[0041] 100mm expansion and contraction drum device;

[0042] sleeve 1;

[0043] inner sliding block 2; inner sliding block sliding groove 2.1;

[0044] outer sliding block 3; first sliding groove 3.1; second sliding groove 3.2; sliding boss 3.3; outer flat surface 3.4;

[0045] arc-shaped plate 4; outer sliding block mounting groove 4.1;

[0046] bearing seat 5; sleeve matching boss 5.1; bearing retainer ring contact 5.2;

[0047] bearing seat transparent cover 6;

[0048] lead screw 7; bearing retainer ring 7.1; thrust ball bearing bearing platform one 7.2; thrust ball bearing bearing platform two 7.3; square shaft head 7.4; outer trapezoidal transmission thread 7.5;

[0049] thrust ball bearing 8;

[0050] mandrel 9; mandrel shaft head 9.1; key groove 9.2;

[0051] coupling plate 10; coupling plate boss 10.1;

[0052] guide disc 11; mandrel mounting hole 11.1; "T"-shaped sliding groove 11.2. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0054] One of the purposes of the present application is to provide a novel expanding and contracting winding drum device to solve the problems of complex structure, large floor area, high operation difficulty, high manufacturing cost, high maintenance cost, high safety risk coefficient and the like caused by the need for special configuration of a hydraulic system and some mechanical and electrical equipment in the existing expanding and contracting winding drum device.

[0055] Another purpose of the present application is to provide a strip coiling machine comprising the above-mentioned expanding and contracting winding drum device.

[0056] In order to make the above-mentioned purposes, features and advantages of the present application more apparent, clear and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0057] Embodiment 1

[0058] As Figure 1 shown, the present embodiment provides a kind of expansion and contraction reel device 100, can be cooperated with finished product uncoiler, shearing machine etc. and realize to metal plate strip material finished product roll uncoiling.The expansion and contraction reel device 100 includes guide disc 11, axial drive device and expansion and contraction diameter device, axial drive device is used to the force to expansion and contraction diameter device, to make expansion and contraction diameter device realize outer diameter expansion or outer diameter shrink, in turn realize the expansion and contraction of strip material reel.Wherein:

[0059] Guide disc 11 is preferably circular shape by steel plate wire cutting, the side of guide disc 11 towards bearing seat 5, there are multiple "T" type sliding grooves 11.2 in the outer periphery of core shaft mounting hole 11.1 along the circumferential direction, and any "T" type sliding groove 11.2 is along the radial direction of guide disc 11, the big end of any "T" type sliding groove 11.2 is towards core shaft mounting hole 11.1."T" type sliding groove 11.2 can be provided with two, three, four or more, generally preferably "T" type sliding groove 11.2 is uniformly distributed in the outer periphery of core shaft mounting hole 11.1.As Figure 3 Shown, the structure diagram that three "T" type sliding grooves 11.2 are simultaneously provided on the surface of guide disc 11, and three "T" type sliding grooves 11.2 are uniformly distributed in the outer periphery of core shaft mounting hole 11.1.

[0060] As Figure 1 Shown, axial drive device includes sleeve 1, bearing seat 5, bearing seat transparent cover 6, lead screw 7, thrust ball bearing 8 and core shaft 9.Core shaft mounting hole 11.1 is set in the center of guide disc 11, the first end of core shaft 9 is installed with core shaft mounting hole 11.1 shaft hole cooperation, then is fixed using key connection or welding etc., to avoid the relative rotation and relative movement between core shaft 9 and core shaft mounting hole 11.1;Guide disc 11 is used to be connected with finished product uncoiler or shearing machine etc., and is driven to rotate by finished product uncoiler or shearing machine, to realize the uncoiling of metal plate strip material finished product roll.Sleeve 1 is sleeved on the outside of core shaft 9, and is close to the second end of core shaft 9 (as Figure 1 Shown, the second end and the first end of core shaft 9 correspond to the axial left end and the axial right end of core shaft 9 respectively), to prevent sleeve 1 and core shaft 9 from relative rotation during uncoiling, key connection is carried out between sleeve 1 and core shaft 9, i.e. key groove is set on the inner hole wall surface of sleeve 1, and key groove 9.2 is set on the outer circumferential surface of core shaft 9, and the relative position in circumferential direction is kept by key bar.It needs to be explained that the length of key groove on sleeve 1 is longer than the above-mentioned key bar, but the length of the key bar is preferably adapted to the length of the key groove 9.2 outside the core shaft 9, to ensure that the sleeve 1 can move along the axial direction of the core shaft 9 relative to the core shaft 9 under the action of external driving force.

[0061] The second end of the mandrel 9 is coaxially machined with a certain length of inner trapezoidal transmission thread; the lead screw 7 is located at the second end of the mandrel 9 and coaxially arranged with the mandrel 9, the first end of the lead screw 7 is externally machined with a certain length of outer trapezoidal transmission thread 7.5, the lead screw 7 is screwed into the inner trapezoidal transmission thread through the outer trapezoidal transmission thread 7.5, realizing coaxial thread connection of the lead screw 7 and the mandrel 9; after the lead screw 7 and the mandrel 9 are connected and matched, when the lead screw 7 rotates, because the mandrel 9 is stationary and fixed, it cannot move and rotate axially, so the lead screw 7 will make forward or backward movement relative to the mandrel 9 in the axial direction of the mandrel 9.

[0062] The bearing seat 5 is installed with the thrust ball bearing 8, then the combination of the bearing seat 5 and the thrust ball bearing 8 is sleeved on the second end of the lead screw 7 (i.e. the left end of the sleeve 1 as shown in Figure 1 The bearing seat 5 is installed with the thrust ball bearing 8, then the combination of the bearing seat 5 and the thrust ball bearing 8 is sleeved on the second end of the lead screw 7 (i.e. the left end of the sleeve 1 as shown in Figure 1 The bearing seat 5 is installed with the thrust ball bearing 8, then the combination of the bearing seat 5 and the thrust ball bearing 8 is sleeved on the second end of the lead screw 7 (i.e. the left end of the sleeve 1 as shown in Figure 1 The bearing seat 5 is installed with the thrust ball bearing 8, then the combination of the bearing seat 5 and the thrust ball bearing 8 is sleeved on the second end of the lead screw 7 (i.e. the left end of the sleeve 1 as shown in Figure 1 When the lead screw 7 rotates, it rotates relative to the bearing seat 5 through the thrust ball bearing 8 and drives the sleeve 1 to move horizontally relative to the mandrel 9 along the axial direction of the mandrel 9.

[0063] As shown in Figure 1 The above-mentioned expanding and contracting device includes the inner sliding block 2, the outer sliding block 3, the arc-shaped plate 4 and the connecting plate 10. The inner sliding block 2 is preferably machined from steel material, a plurality of inner sliding blocks 2 are uniformly installed on the outer circumferential surface of the sleeve 1 in the circumferential direction, as shown in Figure 1 The outer circumferential surface of the sleeve 1 is preferably provided with a sliding block installation groove, the inner ring of the inner sliding block 2 is embedded into the sliding block installation groove and welded and fixed with the sliding block installation groove. The inner sliding block 2 and the setting number and position of the aforementioned “T” type sliding groove 11.2 are one-to-one corresponding, that is, at the position corresponding to each “T” type sliding groove 11.2, an inner sliding block 2 is installed. Figure 4 and Figure 5As shown, the outer ring surface of the inner sliding block 2 is arranged at an angle a with the central axis of the sleeve 1, which can be 15°-30°, and is best at a=15°. The inner sliding block 2 and the outer sliding block 3 are in sliding fit, and the specific implementation is that the inner sliding block 2 and the outer sliding block 3 are in inclined surface contact and concave-convex sliding fit. Specifically, the outer sliding block 3 is arranged on the outer ring of the inner sliding block 2 and is arranged one-to-one with the inner sliding block 2. The inner ring surface of each outer sliding block 3 is arranged as an inclined surface matching the slope of the outer ring surface of the inner sliding block 2, and the outer sliding block 3 is in inclined surface contact with the outer ring surface of the inner sliding block 2 through the inner ring surface. At the same time, the outer ring surface of the inner sliding block 2 is processed with an inner sliding block sliding groove 2.1, which has the same slope as the outer ring surface of the inner sliding block 2, that is, the angle between the inner sliding block sliding groove 2.1 and the central axis of the sleeve 1 is also 15°-30°, and is best at 15°. Correspondingly, the inner ring surface of the outer sliding block 3 is provided with a sliding boss 3.3 which is in sliding fit with the inner sliding block sliding groove 2.1, and the sliding boss 3.3 of the outer sliding block 3 is in sliding fit with the inner sliding block sliding groove 2.1 of the inner sliding block 2. Based on this, when the inner sliding block 2 moves axially along the axis of the sleeve 1 relative to the mandrel 9, the inner sliding block 2 can push the outer sliding block 3 radially outward by using its outer ring surface to realize the function of expanding the diameter.

[0064] At the same time, as shown in Figure 6 and Figure 7 , the end of the outer sliding block 3 away from the bearing seat 5 is provided with a second sliding groove 3.2, and the outer sliding block 3 is in sliding fit with the "T"-shaped sliding groove 11.2 of the guide disc 11 through the second sliding groove 3.2, and the outer ring of the outer sliding block 3 is an outer flat surface 3.4 which faces outward. When the outer sliding block 3 is driven by the inner sliding block 2, the outer sliding block 3 can slide along the "T"-shaped sliding groove 11.2, thereby realizing the function of expanding and shrinking the diameter. The guide disc 11 also provides a mounting basis for the outer sliding block 3, ensuring that the inner sliding block 2 and the outer sliding block 3 are stably matched while realizing the assembly and integration of the inner sliding block 2 and the outer sliding block 3.

[0065] Further, in order to improve the cooperation reliability and stability of the inner sliding block 2 and the outer sliding block 3, as shown in Figure 1 , Figure 16 and Figure 17As shown, connecting plates 10 are fixedly installed on both sides of each inner slider 2. The connecting plates 10 are higher than the outer ring surface of the inner slider 2, and each connecting plate 10 has a connecting plate boss 10.1 on its inner outer end (the end furthest from the mandrel 9 along the radial direction of the mandrel 9). The inner ring surface of the outer slider 3 is in contact with the inclined surface of the outer ring surface of the inner slider 2. At the same time, the outer slider 3 also has a first sliding groove 3.1 on both sides that matches the connecting plate boss 10.1. During installation, it is necessary to ensure that the connecting plate boss 10.1 of the connecting plate 10 slides in contact with the first sliding groove 3.1 of the outer slider 3, and the inclination of the connecting plate boss 10.1 and the first sliding groove 3.1 are also adapted to the inclination of the outer ring surface of the inner slider 2. The function of the connecting plate 10 is to ensure that the inner slider 2 and the outer slider 3 are in a good contact and guiding state and generate relative sliding when the inner slider 2 moves with the sleeve 1 along the axis of the mandrel 9, so as to ensure that the outer slider 3 can move radially outward or radially inward under the drive of the inner slider 2. Figure 17 As shown, the connecting plate 10 is preferably made of steel plate. Since it has a connecting plate boss 10.1 on the inner side of its end, the connecting plate 10 is in the shape of an "L".

[0066] like Figures 9-11 As shown, an outer slider mounting groove 4.1 is formed at the center of the inner arc surface of the arc plate 4, along the central axis of the sleeve 1. The arc plate 4 is fitted onto the outer plane 3.4 of the outer slider 3 through the outer slider mounting groove 4.1 and fixed to the outer plane 3.4 of the outer slider 3 by bolts. The arc plate 4 is preferably a fan-shaped steel plate processed from steel plate, such as... Figure 9 As shown, the outer slider mounting groove 4.1 is machined starting from the right end face of the arc plate 4, and bolt mounting holes are machined in the outer slider mounting groove 4.1. These holes are countersunk holes to ensure the flatness of the outer arc surface after the bolts are installed. Arc plates 4 are installed on the outer plane 3.4 of each outer slider 3. Taking the example of three sets of outer slider 3, inner slider 2 and "T"-shaped sliding groove 11.2, after the three arc plates 4 are installed on the three outer sliders 3 respectively, the outer arc surfaces of the three arc plates 4 are located on the same circumferential surface, and this circumferential surface is coaxial with the sleeve 1 and the mandrel 9. The three arc plates 4 are used to mount the finished metal strip coil. By rotating the drive screw 7, the expansion and contraction of the three arc plates 4 can be adjusted. Before uncoiling, it is necessary to ensure that the three arc plates 4 expand radially to tighten with the inner circle of the finished metal strip coil, so as to achieve relative fixation between the finished metal strip coil and the three arc plates 4. At this time, the guide disc 11 can be rotated to achieve uncoiling of the coil. Conversely, when it is necessary to disassemble the coil, the screw 7 is rotated in the opposite direction to cause the three arc plates 4 to retract radially, thereby releasing their fixation on the finished metal sheet / strip coil.

[0067] In some embodiments, the outer ring surface of the inner slider 2 may be provided with multiple inclined surfaces, such as... Figure 1 , Figure 4As shown, the outer ring surface of the inner sliding block 2 has two inclined surfaces, and at the same time, the inner ring surface of the outer sliding block 3 is also provided with two inclined surfaces matched with the two inclined surfaces of the inner sliding block 2. This design can improve the reliability and stability of the guiding cooperation between the inner sliding block 2 and the outer sliding block 3.

[0068] In some embodiments, the outer sliding block 3 is preferably made of a steel plate, and a first sliding groove 3.1 is machined on the two side surfaces of the outer sliding block 3 close to the inner ring surface of the outer sliding block 3. The horizontal angle of the first sliding groove 3.1 is preferably 15°. A second sliding groove 3.2 is machined on the two side surfaces of the right end of the outer sliding block 3 (i.e. the end close to the guide disc 11), and the second sliding groove 3.2 is perpendicular to the central axis of the sleeve 1.

[0069] In some embodiments, the core shaft 9 is preferably made of a round steel. Specifically, a core shaft head 9.1 is machined on the first end of the core shaft 9, and an inner trapezoidal transmission thread with a certain depth is machined on the second end of the core shaft 9. A key groove 9.2 with a certain length is machined on the circumferential surface of the core shaft 9 close to the first end side. The core shaft head 9.1 is installed in the core shaft mounting hole 11.1 of the guide disc 11, and the core shaft 9 is fixed on the guide disc 11 by welding to form a core shaft and guide disc assembly. When the guide disc 11 rotates, the core shaft 9 will rotate synchronously with the guide disc 11.

[0070] In some embodiments, the sleeve 1 is preferably made of a steel pipe. Three sliding block mounting grooves with certain depths and lengths are machined on the circumferential surface of the sleeve 1, and the three sliding block mounting grooves are uniformly distributed on the circumferential surface of the sleeve 1. A long key groove is machined on the inner surface of the sleeve 1 starting from the first end (i.e. the right end as shown) of the sleeve 1. A plurality of bolt holes are uniformly distributed and machined on the end surface of the second end (i.e. the left end as shown) of the sleeve 1. Figure 1 Figure 1 In some embodiments, a key is installed at the key groove of the core shaft 9, and the key groove on the inner surface of the sleeve 1 and the key installed at the key groove of the core shaft 9 are in sliding cooperation. The sleeve 1 is sleeved on the core shaft 9. The function of the key is to enable the sleeve 1 sleeved on the core shaft 9 to rotate synchronously with the guide disc 11 when the guide disc 11 rotates with the unwinding machine, so as to realize the unwinding process of the metal strip material roll, and at the same time, ensure that the sleeve 1 moves along the axial direction of the core shaft 9 to realize the expansion and contraction function of the roll.

[0071] In some embodiments, the lead screw 7 is preferably made of a round steel. A certain length of outer trapezoidal transmission thread is machined on the first end of the lead screw 7. A bearing stop ring 7.1 is arranged between the second end of the lead screw 7 and the outer trapezoidal transmission thread. Two thrust ball bearing bearing tables, i.e. thrust ball bearing bearing table one 7.2 and thrust ball bearing bearing table two 7.3, are machined on the lead screw 7 at both ends of the bearing stop ring 7.1. The second end of the lead screw 7 is machined into a square shaft head 7.4 for cooperation with the square hole of the lead screw wrench, so that the lead screw 7 can be driven to rotate by manually turning the lead screw wrench.

[0072] ​In some embodiments, the bearing seat 5 is preferably made of steel pipe, and a plurality of uniformly distributed bolt holes are processed on the second end face of the bearing seat 5, the center distance of which is equal to that of the bolt holes on the second end face of the sleeve 1. The bearing seat cover 6 is preferably a hollow cylinder made of steel pipe, and a plurality of uniformly distributed through holes are processed on the end face of the bearing seat cover 6, the center distance of which is equal to that of the plurality of uniformly distributed bolt holes on the second end face of the bearing seat 5.

[0073] It should be noted that the first ends of the various components are oriented in the same direction, and the second ends of the various components are oriented in the same direction. In the following description, the first end corresponds to the right end, and the second end corresponds to the left end. Figure 1 Figure 1 The assembly method and working principle of the expansion and contraction winding drum device 100 will be described in detail below in combination with the perspective view:

[0074] During installation, a thrust ball bearing 8 is installed at the thrust ball bearing seat two 7.3 of the lead screw 7, and then the outer trapezoidal transmission threaded end of the lead screw 7 is passed through the left end face of the bearing seat 5, so that the right side ring of the thrust ball bearing 8 contacts the bearing retainer ring at the inner hole of the bearing seat 5. A thrust ball bearing 8 is installed at the thrust ball bearing seat one 7.2, so that the thrust ball bearing 8 contacts the bearing retainer ring 7.1. The bearing seat cover 6 is installed on the left end face of the bearing seat 5 and fixed by bolts. The outer trapezoidal transmission thread of the lead screw 7 cooperates with the inner trapezoidal transmission thread of the mandrel 9. The sleeve cooperation boss 5.1 at the right end of the bearing seat 5 is inserted into the inner hole of the left end of the sleeve 1, and then the bearing seat 5 and the sleeve 1 are connected and fixed by bolts through the end face connecting holes and bolt holes. At this time, the combination of the lead screw 7, the bearing seat 5, the bearing seat cover 6, and the two sets of thrust ball bearings 8 is connected with the sleeve 1, and the expansion and contraction winding drum device 100 is assembled.

[0075] The lead screw 7 is manually driven by the lead screw wrench, and the lead screw 7 moves to the left. When the lead screw 7 moves to the left, the thrust ball bearing 8 installed at the thrust ball bearing seat one 7.2 bears the force, and the lead screw 7 drives the sleeve 1 and the inner sliding block 2 to move to the left along the axis direction of the mandrel 9. At this time, the second sliding groove 3.2 of the outer sliding block 3 is in the "T" type sliding groove of the guide disc 11, and moves inward along the radial direction of the guide disc 11 (or the radial direction of the mandrel 9). At this time, the arc-shaped plate 4 moves inward along the radial direction of the guide disc 11 (or the radial direction of the mandrel 9), and the outer circle diameter of the circle formed by the outer arc surfaces of the three arc-shaped plates 4 decreases, realizing the function of reducing the radial size of the winding drum.

[0076] ​The artificial drives the lead screw 7 reversely through the lead screw wrench manually. The lead screw 7 moves to the right. When the lead screw 7 moves to the right, the thrust ball bearing 8 installed at the bearing station two 7.3 of the thrust ball bearing bears the force. The sleeve 1 and the inner sliding block 2 are driven by the lead screw 7 to move to the right along the axis direction of the mandrel 9. At this time, the second sliding groove 3.2 of the outer sliding block 3 moves outward along the radial direction of the guide disc 11 (or the radial direction of the mandrel 9) in the T-shaped sliding groove of the guide disc 11. At this time, the arc-shaped plate 4 moves outward along the radial direction of the guide disc 11 (or the radial direction of the mandrel 9). The outer circle diameter of the circle formed by the outer arc surface of the three arc-shaped plates 4 increases, and the function of the radial expansion of the winding drum is realized.

[0077] The guide disc 11 is connected with the uncoiler. At the same time, the metal plate strip product coil is sleeved outside the three arc-shaped plates 4. The radial expansion adjustment of the three arc-shaped plates 4 is performed, so that the three arc-shaped plates 4 and the inner circle of the metal plate strip product coil are expanded tightly. The relative fixation of the metal plate strip product coil and the three arc-shaped plates 4 is realized. At this time, the uncoiler is started. When the guide disc 11 rotates with the uncoiler, the mandrel 9 and the sleeve 1 can rotate synchronously with the guide disc 11. The unwinding process of the metal plate strip product coil sleeved outside the three arc-shaped plates 4 is realized.

[0078] In summary, the expansion and contraction winding drum device 100 can be assembled and used with the uncoiler, the shearing machine and other product machines. It is suitable for the unwinding of the copper, aluminum, steel and other metal plate strip product coils. The inner sliding block 2 is installed on the circumferential surface of the sleeve 1. The inner sliding block 2 and the outer sliding block 3 are assembled by the inclined surface guide and sliding. The arc-shaped plate 4 is assembled outside the outer ring of the outer sliding block 3 and is used for sleeving the metal plate strip material coil. When the lead screw 7 rotates, the sleeve 1 sleeved on the mandrel 9 and the inner sliding block 2 installed on the sleeve 1 are driven to advance or retreat along the axial direction of the mandrel 2 through the bearing seat 5 and the thrust ball bearing 8. The axial movement of the inner sliding block 2 relative to the mandrel 9 can drive the outer sliding block 3 and the arc-shaped plate 4 to expand outward or contract inward in the radial direction of the mandrel 9. In turn, the outer circle diameter of the circle formed by the arc-shaped plate 4 is changed. The outer arc surface of the arc-shaped plate 4 is in pressure contact with the inner circle of the metal plate strip product coil. The inner core of the metal plate strip material is kept relatively stationary with the arc-shaped plate 4. Therefore, the metal plate strip material coil can be unwound smoothly, or the inner circle of the metal plate strip product coil is separated from the arc-shaped plate 4, so that the coil can be easily unloaded from the arc-shaped plate 4.

[0079] The whole structure of the scheme is simple, the design is ingenious, the manufacturing cost is low, the operation is simple, the winding drum expansion or contraction process can be realized by manually driving the lead screw, no additional hydraulic system or electromechanical equipment is needed, the production cost is saved, the maintenance is convenient, and the needs of the uncoiler, the shearing machine and other metal plate strip material coils are met.

[0080] Example 2

[0081] The embodiment proposes a telescopic reel device 100, which is based on the scheme of embodiment 1 and further comprises a screw handle. The screw handle is preferably made of steel plate, a square hole is processed at one end of the screw handle, the size of the hole is consistent with the size of the square shaft head 7.4 of the screw 7, the screw handle is processed as a whole into a conical shape, the square hole end is large, and the other end is small. This design is comfortable and labor-saving to operate. When telescoping is needed, the square hole of the screw handle is sleeved on the square shaft head 7.4 of the screw 7, and the operator rotates the other end of the screw handle to realize the telescopic function of the reel, which is simple to operate, does not need to additionally configure a hydraulic system or electromechanical equipment, saves production cost, and meets the current needs of the metal plate and strip material reel for uncoiling.

[0082] Embodiment 3

[0083] The embodiment proposes a strip coiling machine comprising the telescopic reel device 100 in embodiment 1 or embodiment 2. The strip coiling machine can be a finished product shearing machine or an uncoiling machine, which is used to smoothly realize the uncoiling of the metal plate and strip material reel after the telescopic reel device 100 tightens the metal plate and strip material reel.

[0084] The strip coiling machine does not need to additionally configure a hydraulic system or electromechanical equipment, simplifies the equipment structure, has small equipment area, and also reduces the manufacturing cost and maintenance cost. Based on the ingenious mechanical structure design of the telescopic reel device 100, the screw handle can be manually driven by artificial to rotate the screw 7, realize the telescopic function of the telescopic reel device 100, and is simple to operate. Since the hydraulic system and electromechanical equipment are omitted, the safety of the on-site operation is improved, and the safety hidden danger caused by the hydraulic system or electromechanical equipment is avoided.

[0085] It should be understood that the structure, proportion, size and the like shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and do not have technical substantive significance, any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the specification are only for clear description, and not for limiting the scope of the utility model, the change or adjustment of the relative relationship, without substantially changing the technical content, is also regarded as the scope of the utility model.

[0086] The principle and implementation mode of the utility model are described by applying specific examples, and the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, the specific implementation mode and application range will be changed according to the idea of the utility model. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A retractable drum device, characterized in that, Includes a guide disc, an axial drive device, and a diameter expansion / contraction device, wherein: The guide disk has multiple "T"-shaped sliding grooves arranged along its circumference, and any one of the "T"-shaped sliding grooves is arranged along the radial direction of the guide disk. The axial drive device includes a sleeve, a lead screw, and a mandrel. The first end of the mandrel is coaxially connected to the guide disk. The sleeve is coaxially fitted around the mandrel and close to its second end. The sleeve is keyed to the mandrel and is capable of moving axially relative to the mandrel. An internal trapezoidal drive thread is formed at the second end of the mandrel. An external trapezoidal drive thread is machined on the first end of the lead screw. The lead screw is screwed into the internal trapezoidal drive thread through the external trapezoidal drive thread and coaxially connected to the mandrel. A bearing seat is provided at the second end of the sleeve. The second end of the lead screw passes through the bearing seat and rotatably engages with it via a bearing. A manual drive structure is provided at the second end of the lead screw. The expansion and contraction device includes an inner slider, an outer slider, and an arc-shaped plate. Multiple inner sliders are arranged circumferentially on the outer circumferential surface of the sleeve. The outer ring surface of any inner slider is arranged at an angle α with the central axis of the sleeve. The outer slider is disposed on the outer ring of the inner sliders, and the "T"-shaped sliding groove, the inner slider, and the outer slider are arranged in a one-to-one correspondence. The inner ring surface of any outer slider is adapted to the slope of the outer ring surface of the corresponding inner slider, and the outer slider contacts the slope of the corresponding inner slider. The first end of the outer slider slides in a guide engagement with the corresponding "T"-shaped sliding groove. An arc-shaped plate is provided on the outer ring surface of any outer slider, and the outer arc surfaces of all the arc-shaped plates are located on the same circumferential surface, which is coaxial with the sleeve. The outer surface of all the arc-shaped plates is used to mount a roll of metal sheet or strip material. The manual drive structure can drive the lead screw to rotate and realize the expansion and contraction adjustment of all the arc-shaped plates.

2. The expanding and contracting drum device according to claim 1, characterized in that, The guide disc has a mandrel mounting hole at its center. The first end of the mandrel mates with the mandrel mounting hole and is keyed or welded to the mandrel mounting hole.

3. The expanding and contracting drum device according to claim 2, characterized in that, The outer periphery of the mandrel mounting hole is uniformly provided with a plurality of "T"-shaped sliding grooves, and the larger end of any "T"-shaped sliding groove faces the mandrel mounting hole.

4. The expanding and contracting drum device according to any one of claims 1 to 3, characterized in that, The outer ring surface of any one of the inner sliders is provided with an inner slider sliding groove, and the inner ring surface of any one of the outer sliders is provided with a sliding boss that slides and adapts to the inner slider sliding groove.

5. The expanding and contracting drum device according to claim 4, characterized in that, Both sides of any one of the inner sliders are provided with connecting plates, the connecting plates being higher than the outer ring surface of the inner slider, and the inner outer end of any one of the connecting plates is provided with a connecting plate boss; both sides of any one of the outer sliders are provided with a first sliding groove adapted to the connecting plate boss, and the connecting plate boss of the connecting plate is slidably engaged with the first sliding groove of the corresponding outer slider.

6. The expanding and contracting drum device according to claim 4, characterized in that, Each of the outer sliders has a second sliding groove at its first end, and the outer slider is slidably installed by the second sliding groove and the corresponding "T"-shaped sliding groove.

7. The expanding and contracting drum device according to any one of claims 1 to 3, characterized in that, The center of the inner arc surface of the arc plate is provided with an outer slider mounting groove along the central axis of the sleeve. The arc plate is fitted onto the outer plane of the corresponding outer slider through the outer slider mounting groove and is fixed to the outer slider by bolts.

8. The expanding and contracting drum device according to any one of claims 1 to 3, characterized in that, Both the outer ring surface of the inner slider and the inner ring surface of the outer slider are provided with multiple inclined surfaces at intervals along the axial direction of the sleeve, and the inclined surfaces of the inner ring surface of the outer slider correspond one-to-one with the inclined surfaces of the outer ring surface of the inner slider.

9. The expanding and contracting drum device according to any one of claims 1 to 3, characterized in that, The mandrel has a mandrel keyway, and a key of the appropriate size is provided in the mandrel keyway; the inner circle of the sleeve has a sleeve keyway, and the length of the sleeve keyway is longer than that of the mandrel keyway, so that the sleeve can move relative to the mandrel along the axial direction of the mandrel.

10. A strip winding machine, characterized in that, The device includes the expansion and contraction drum device according to any one of claims 1 to 9, wherein the strip winding machine is connected to the guide disc and can drive the guide disc to rotate after the expansion and contraction drum device has tightened the metal strip material roll, so as to unwind the metal strip material roll.

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