Double-sizing sizing machine

Abstract

The utility model relates to the technical field of steel rolling production, and discloses a double-sizing sizing machine which comprises a machine frame, a first roller, a second roller, a third roller, a fourth roller and a fourth roller. The machine frame is fixedly provided with a screw rod extending in the first direction. Each baffle is provided with a material blocking face, and the material blocking faces are perpendicular to the first direction, are arranged in the first direction and face the same direction; the bearing frames are in one-to-one correspondence with the baffles and are movably mounted on the rack in the first direction; the first driving mechanisms are in one-to-one correspondence with the bearing frames, and each first driving mechanism comprises a transmission nut arranged on the corresponding screw rod in a sleeving mode and a first power device; the two ends of the transmission nut are each provided with a radial bearing, inner rings of the radial bearings are fixed to the transmission nut, outer rings of the radial bearings are fixed to the bearing frame, and the first power device is installed on the bearing frame. In the bearing frame and the baffle which correspond to each other, the bearing frame is provided with a second driving mechanism connected with the baffle. The double-sizing sizing machine is high in use flexibility and high in applicability, and the production cycle and cost are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel rolling production, in particular to a double-sizing sizing machine. Background Art

[0002] In the prior art, the sizing machine used for cutting steel generally has only one sizing baffle plate. Adjusting the baffle plate position once can only cut one sizing length. In addition, there are also sizing machines equipped with two sizing baffle plates. The two sizing baffle plates are relatively fixed, so the spacing between the two sizing baffle plates is fixed. Adjusting the baffle plate position once can also only cut two sizing lengths. They are suitable for batches of large-scale fixed-length products. Both sizing machines have certain limitations.

[0003] However, at present, the order quantity of special steel bars in the factory is generally small, the length is not fixed, and most of the surplus materials are required to be delivered in multiple lengths. The use of existing technology such as fixed-length machines has great limitations. The workload of cutting the surplus materials off the line into multiple lengths in the subsequent finishing process is large, which has an adverse impact on controlling the production cycle and cost.

[0004] Therefore, how to provide a cut-to-length machine with strong applicability and reduced production cycle and cost is a project topic that urgently needs to be studied. Utility Model Content

[0005] The utility model aims to provide a double-size sizing machine, which has high flexibility in use, strong applicability and can effectively reduce production cycle and cost.

[0006] In order to achieve the above object, the utility model provides the following technical solutions:

[0007] A double-sizing machine, comprising:

[0008] A frame, wherein the frame is provided with a spiral rod extending along a first direction, and the spiral rod is fixedly connected to the frame;

[0009] At least two baffles are arranged on the frame, each of the baffles has a material-blocking surface, the material-blocking surface is perpendicular to the first direction, and the material-blocking surfaces are arranged along the first direction and have the same direction;

[0010] A supporting frame corresponding to the baffles one by one and movably mounted on the frame along the first direction;

[0011] a first driving mechanism corresponding to the carrier frame one by one and used for driving the carrier frame to move along the first direction, the first driving mechanism comprising: a transmission nut sleeved on the spiral rod, and a first power device used for driving the transmission nut to rotate; a radial bearing is respectively provided at both ends of the transmission nut, the inner ring of the radial bearing is fixed to the transmission nut, the outer ring of the radial bearing is fixed to the carrier frame, and the first power device is installed on the carrier frame;

[0012] Among them, in the corresponding supporting frame and baffle, the supporting frame is provided with a second driving mechanism connected to the baffle and used to drive the baffle to move along a second direction; the second direction is perpendicular to the first direction, and the second direction is parallel to the baffle surface.

[0013] When the double-size cutting machine cooperates with the steel cutting, the conveying direction of the steel is parallel to the first direction, and the steel is conveyed along the first direction. Here, two baffles are provided as an example for explanation, wherein the two baffles can be referred to as the first baffle and the second baffle:

[0014] The first baffle and the second baffle are respectively installed on the frame through the supporting frame, wherein along the first direction, relative to the input port of the steel in the double-size sizing machine, the second baffle is located on the side of the first baffle away from the input port, and when the first baffle is used to block the steel for cutting, the first baffle moves downward to the material blocking station to limit the steel plate and achieve the cutting of the steel of the first preset size; when the second baffle is needed to block the steel for cutting, the first baffle needs to be moved upward and retracted to avoid blocking the transmission of the steel on the transportation route, so that the steel can pass under the first baffle and reach the material blocking surface of the second baffle, and the second baffle limits the steel and achieves the cutting of the steel of the second preset size. The steel is transported in a first direction, and the positions of the first baffle and the second baffle in the first direction can be adjusted independently. The positions of the first baffle and the second baffle can be adjusted arbitrarily. After one adjustment, the two baffles can correspond to different fixed lengths and multiple lengths of surplus material respectively. There is no fixed distance association between the two baffles. Each adjustment can correspond to different fixed lengths and multiple lengths of surplus material, so that the length size of the cut steel meets the fixed length requirements of different requirements. Among them, the steel is transported in the same direction. Relative to the positions of the two baffles in the first direction, after one adjustment, the two baffles can form two length specifications, a short length part is formed at the baffle closer to the steel input port, and a long length part is formed at the baffle farther from the input port. The long length part of the cut steel meets the required fixed length requirement, and the short length part meets the required multiple length requirement, which significantly reduces the workload of secondary cutting in the finishing process of offline steel, and effectively reduces the production cycle and production cost. In addition, the above-mentioned double-length cutting machine can also be used to produce two lengths of steel of the same steel grade and specification from a longer steel ingot at one time, to meet the production of steel with two different length requirements, so that manufacturers can deliver contracts with two different order lengths. It is suitable for rolling mills with larger ingot types to undertake small batch orders, increase production flexibility, and improve the applicability of the cutting machine.

[0015] Therefore, the dual-size cut-to-length machine has high flexibility in use, strong applicability, and can effectively reduce production cycle and cost.

[0016] Optionally, the frame includes: two gantries arranged opposite to each other, and a guide portion connecting the two gantries; both ends of the spiral rod are respectively fixedly installed on the top of the two gantries, the guide portion is located on one side of the circumference of the spiral rod, and the guide portion has a guide groove extending along the first direction toward the side of the spiral rod, each of the supporting frames is connected to an auxiliary bracket, and the auxiliary bracket has a sliding portion slidingly matched with the guide groove on the side facing the guide groove.

[0017] Optionally, the sliding portion includes a walking wheel that cooperates with the guide groove.

[0018] Optionally, an outer gear ring is sleeved on the outer peripheral side of the transmission nut;

[0019] The first power device includes an output gear and a motor drivingly connected to the output gear, wherein the motor is used to drive the output gear to rotate around its own axis, and the output gear is meshingly connected to the outer gear ring.

[0020] Optionally, a reducer is provided between the motor and the output gear.

[0021] Optionally, the second driving mechanism includes a first cylinder and a connecting rod mechanism connected to a piston rod of the first cylinder, and the first cylinder is drivingly connected to the baffle through the connecting rod mechanism.

[0022] Optionally, in the corresponding carrier frame and baffle:

[0023] The connecting rod mechanism includes a "V"-shaped rod and a slider;

[0024] The carrier frame comprises: a connecting bracket connected to the frame, and a supporting frame connected to the connecting bracket and used to carry the second driving mechanism, the supporting frame comprises: a longitudinal connecting portion connected to the connecting bracket and extending along the second direction, and a transverse supporting portion connected to the longitudinal connecting portion and extending along the first direction;

[0025] The tip of the "V"-shaped rod is rotatably connected to the longitudinal connecting portion, the "V"-shaped opening of the "V"-shaped rod faces the transverse connecting portion, and the rotation axis of the tip of the "V"-shaped rod is parallel to the third direction, and the third direction is perpendicular to the first direction and the second direction; the slider is movably mounted on the transverse supporting portion along the first direction, and one end of the "V"-shaped rod is rotatably connected to the side of the baffle plate away from the material baffle surface, and the rotation axis between one end of the "V"-shaped rod and the baffle plate is parallel to the third direction, and the other end of the "V"-shaped rod is hinged to the slider; the piston rod of the first cylinder is hinged to the slider, and the cylinder body of the first cylinder is rotatably mounted on the transverse supporting portion around an axis parallel to the third direction.

[0026] Optionally, the second driving mechanism includes a second cylinder, the axis of the piston rod of the second cylinder is parallel to the second direction, and the baffle is connected to the piston rod of the second cylinder.

[0027] Optionally, the dual-size cut-to-length machine further comprises a control device, wherein the control device is signal-connected to both the first drive mechanism and the second drive mechanism, and each of the first drive mechanisms is independently controlled, and each of the second drive mechanisms is independently controlled.

[0028] Optionally, limit switches are respectively provided at both ends of the spiral rod, and the limit switches are connected to the control device by signal;

[0029] Among the two adjacent support racks, one of the support racks is provided with a distance sensor, and the distance sensor is connected to the control device by signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0031] Figure 1 A front view of a double-sizing sizing machine provided in an embodiment of the utility model;

[0032] Figure 2 The present invention is a top view of a double-sizing machine provided in an embodiment of the present invention.

[0033] Icons: 1-frame; 2-screw rod; 3-baffle; 4-carrying frame; 5-first driving mechanism; 6-second driving mechanism; 11-gantry; 12-guide part; 41-auxiliary bracket; 42-sliding part; 43-connecting bracket; 44-support frame; 51-transmission nut; 52-first power device; 53-radial bearing; 54-outer gear ring; 61-first cylinder; 62-"V"-shaped rod; 63-slider; 521-motor; 522-reducer. DETAILED DESCRIPTION

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0035] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense. For example, they can be fixedly connected or detachably connected; they can be directly connected or indirectly connected through an intermediate component. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] refer to Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a double-length sizing machine. For ease of explanation, this embodiment is explained based on the installation and placement position of the double-length sizing machine during operation, wherein the second direction is the vertical direction, the horizontal direction is perpendicular to the vertical direction, and the first direction is a direction within the horizontal direction.

[0037] Specifically, the double-size sizing machine of this embodiment includes: a frame 1, at least two baffles 3, a supporting frame 4 and a first driving mechanism 5, wherein the frame 1 is provided with a spiral rod 2 extending along a first direction, the outer peripheral side of the spiral rod 2 has an external thread, the spiral rod 2 is fixedly connected to the frame 1, and the two ends of the spiral rod 2 are respectively fixedly connected to the frame 1, and the two ends of the spiral rod 2 can be suspended; the at least two baffles 3 are arranged on the frame 1, each baffle 3 has a material blocking surface, each material blocking surface is arranged along the first direction, and each material blocking surface faces the same direction, and each material blocking surface is arranged perpendicular to the first direction. Exemplarily, two baffles 3 can be provided; the supporting frame 4 is arranged one by one with the baffles 3, and is movably installed on the frame 1 along the first direction, one baffle 3 is correspondingly provided with one supporting frame 4, and the baffle 3 is installed on the spiral rod 2 of the frame 1 through the supporting frame 4. The first driving mechanism 5 is also arranged in a one-to-one correspondence with the carrier 4, and is used to drive the carrier 4 to move along the first direction. Every carrier 4 is driven by the corresponding first driving mechanism 5, wherein each first driving mechanism 5 includes: a transmission nut 51 sleeved on the spiral rod 2, and a first power device 52 for driving the transmission nut 51 to rotate, the transmission nut 51 has an internal thread, and is connected with the spiral rod 2. The transmission nut 51 and the spiral rod 2 can form a screw nut mechanism, wherein a radial bearing 53 is respectively provided at both ends of the transmission nut 51, and the inner ring and outer ring of the radial bearing 53 are rotatably connected, and the inner ring of the radial bearing 53 is connected to the transmission screw. The nut 51 is fixed, the outer ring of the transmission nut 51 is fixed to the carrier 4, the first power device 52 is installed on the carrier 4, the screw rod 2 is fixed to the frame 1, and the first power device 52 drives the transmission nut 51 to rotate, so that the transmission nut 51 can cooperate with the screw rod 2 and move along the extension direction (first direction) of the axis of the screw rod 2, thereby driving the carrier 4 to move in the first direction. The screw rod 2 is fixed on the frame 1 as a support, and the overall frame 1 is stable. By driving the transmission nut 51 to rotate by driving the external components, the screw rod 2 can be reciprocated, so that the overall structure of the frame 1 is highly reliable, and the stability of the back and forth movement of the carrier 4 is good. In addition, in the corresponding carrier 4 and baffle 3, the carrier 4 is provided with a second driving mechanism 6 connected to the baffle 3 and used to drive the baffle 3 to move in the second direction; the second direction is perpendicular to the first direction, and the second direction is parallel to the baffle surface.

[0038] When the double-sizing machine is used to cut steel, the conveying direction of the steel is parallel to the first direction, and the steel is conveyed along the first direction. Here, two baffles are provided as an example for explanation, wherein the two baffles can be referred to as the first baffle and the second baffle:

[0039] The first baffle and the second baffle are respectively installed on the frame through the supporting frame, wherein along the first direction, relative to the input port of the steel in the double-size sizing machine, the second baffle is located on the side of the first baffle away from the input port, and when the first baffle is used to block the steel for cutting, the first baffle moves downward to the material blocking station to limit the steel plate and achieve the cutting of the steel of the first preset size; when the second baffle is needed to block the steel for cutting, the first baffle needs to be moved upward and retracted to avoid blocking the transmission of the steel on the transportation route, so that the steel can pass under the first baffle and reach the material blocking surface of the second baffle, and the second baffle limits the steel and achieves the cutting of the steel of the second preset size. The steel is transported in a first direction, and the positions of the first baffle and the second baffle in the first direction can be adjusted independently. The positions of the first baffle and the second baffle can be adjusted arbitrarily. After one adjustment, the two baffles can correspond to different fixed lengths and multiple lengths of surplus material respectively. There is no fixed distance association between the two baffles. Each adjustment can correspond to different fixed lengths and multiple lengths of surplus material, so that the length size of the cut steel meets the fixed length requirements of different requirements. Among them, the steel is transported in the same direction. Relative to the positions of the two baffles in the first direction, after one adjustment, the two baffles can form two length specifications, a short length part is formed at the baffle closer to the steel input port, and a long length part is formed at the baffle farther from the input port. The long length part of the cut steel meets the required fixed length requirement, and the short length part meets the required multiple length requirement, which significantly reduces the workload of secondary cutting in the finishing process of offline steel, and effectively reduces the production cycle and production cost. In addition, the above-mentioned double-length cutting machine can also be used to produce two lengths of steel of the same steel grade and specification from a longer steel ingot at one time, to meet the production of steel with two different length requirements, so that manufacturers can deliver contracts with two different order lengths. It is suitable for rolling mills with larger ingot types to undertake small batch orders, increase production flexibility, and improve the applicability of the cutting machine.

[0040] Therefore, the dual-size cut-to-length machine has high flexibility in use, strong applicability, and can effectively reduce production cycle and cost.

[0041] In one possible implementation, Figure 1As shown, the frame 1 includes two oppositely arranged gantries 11 and a guide portion 12 connecting the two gantries 11, and the gantries 11 are door-shaped frames; the two ends of the screw rod 2 are respectively fixedly installed on the tops of the two gantries 11, the guide portion 12 is connected to the two gantries 11, and the guide portion 12 is located on one side of the circumference of the screw rod 2, and the guide portion 12 has a guide groove extending along the first direction on the side facing the screw rod 2, and each support frame 4 is connected to an auxiliary bracket 41 on the side facing the belt portion, and the auxiliary bracket 41 is provided with a sliding portion 42 that slidably cooperates with the guide groove on the side facing the guide groove. The auxiliary bracket 41 is fixedly connected to the support frame 4, and the sliding portion 42 of the auxiliary bracket 41 slidably cooperates with the guide groove, and can slide along the guide groove, so that the movement of the support frame 4 in the first direction is more stable, which is conducive to improving the positioning accuracy of the baffle 3 in the first direction.

[0042] Specifically, Figure 2 As shown, the sliding part 42 includes a running wheel that cooperates with the guide groove. The running wheel is embedded in the guide groove and cooperates with the guide groove, which can reduce the friction when the supporting frame 4 moves along the first direction, so that the supporting frame 4 moves more smoothly in the first direction and reduces energy consumption.

[0043] As a specific arrangement of the first driving mechanism, Figure 1 As shown, an outer gear ring 54 is sleeved on the outer peripheral side of the transmission nut 51, and the outer gear ring 54 is coaxially arranged and fixedly connected with the transmission nut 51, and the outer peripheral side of the outer gear ring 54 has a plurality of external teeth; the first power device 52 includes an output gear, and a motor 521 drivingly connected to the output gear, the motor 521 is used to drive the output gear to rotate around its own axis, and the output gear is meshed with the outer gear ring 54. The motor 521 can be a servo motor 521, and the output gear is drivingly connected to the output shaft of the motor 521. When the motor 521 is started, the output gear is driven to rotate, and the output gear is meshed with the outer gear ring 54, thereby driving the outer gear ring 54 to rotate, so that the transmission nut 51 rotates and moves on the spiral rod 2, so that the carrier 4 moves along the first direction, and the position adjustment of the baffle 3 along the first direction is realized.

[0044] Specifically, Figure 1 As shown, in order to ensure stable rotation of the transmission nut, a reducer 522 is arranged between the motor 521 and the output gear, the motor 521 is transmission-connected to the reducer 522, and the reducer 522 is transmission-connected to the output gear, so that the output gear rotates stably.

[0045] On the other hand, Figure 1As shown, as a possible implementation of the second driving mechanism 6, the second driving mechanism 6 includes a first cylinder 61 and a connecting rod mechanism connected to the piston rod of the first cylinder 61, and the first cylinder 61 is drivingly connected to the baffle 3 through the connecting rod mechanism. Specifically, in the corresponding carrier frame 4 and baffle 3: the connecting rod mechanism includes a "V"-shaped rod 62 and a slider 63; the carrier frame 4 includes a connecting bracket 43 connected to the frame 1, and a support frame 44 connected to the connecting bracket 43 and used to carry the second driving mechanism 6, the support frame 44 includes a longitudinal connecting portion connected to the connecting bracket 43 and extending along the second direction, and a transverse supporting portion connected to the longitudinal connecting portion and extending along the first direction; the tip of the "V"-shaped rod 62 is rotatably connected to the longitudinal connecting portion, the "V"-shaped opening of the "V"-shaped rod 62 faces the transverse connecting portion, the opening of the "V"-shaped rod 62 faces downward, and the rotation axis of the tip of the "V"-shaped rod 62 is parallel to the third direction, wherein the third direction is in the horizontal direction and perpendicular to the first direction; the slider 63 is movably installed on the transverse supporting portion along the first direction, specifically, the slider 63 is slidably connected to the transverse supporting portion The first cylinder 61 is connected to the slide 63, wherein one end of the "V"-shaped rod 62 is rotationally connected to the side of the baffle 3 away from the material blocking surface, and the rotation axis of the baffle 3 is parallel to the third direction. The other end of the "V"-shaped rod 62 is hinged to the slider 63. Preferably, the other end of the "V"-shaped rod 62 is rotationally connected to the slider 63, and the rotation axis between the other end of the "V"-shaped rod 62 and the slider 63 is parallel to the third direction. The piston rod of the first cylinder 61 is hinged to the slider 63, and the free end of the piston rod of the first cylinder 61 is also rotationally connected to the slider 63, and the rotation axis between the piston rod of the first cylinder 61 and the slider 63 is parallel to the third direction. The first cylinder 61 is installed on the transverse support part, and the cylinder body of the first cylinder 61 is installed on the transverse support frame through the cylinder base, and the cylinder body of the first cylinder 61 is rotationally connected to the cylinder base, and the rotation axis between the cylinder body of the first cylinder 61 and the cylinder base is parallel to the third direction. The first cylinder 61 drives the baffle 3 to move up and down through the connecting rod mechanism, and the action is stable.

[0046] As another possible implementation of the second driving mechanism, the second driving mechanism includes a second cylinder, the axis of the piston rod of the second cylinder is parallel to the second direction, the cylinder body of the second cylinder is fixedly connected to the support frame, the baffle is connected to the piston rod of the second cylinder, and the piston rod of the second cylinder directly drives the baffle to move up and down, and the movement is fast.

[0047] The above-mentioned double-length cut-to-length machine also includes a control device, which is connected to the first drive mechanism and the second drive mechanism by signal, and each first drive mechanism is independently controlled, and the two first drive mechanisms are independent of each other, so that the positions of the two baffles in the first direction can be independently adjusted, and each second drive mechanism is independently controlled. The control device is used to control the first drive mechanism to adjust the baffle in the first direction, and is used to control the second drive mechanism to realize the movement of the baffle in the vertical direction, so that the baffle can be mechanized and automatically adjusted, the operation is simple, and the work efficiency is improved.

[0048] In order to prevent the support frame from detaching or causing structural interference at both ends of the spiral rod, refer to Figure 1 As shown, limit switches are respectively provided at both ends of the screw rod 2, and the limit switches are connected to the control device signal. When the support frame 4 moves to the end of the screw rod 2, the limit switch is triggered, and the control device can control the first driving mechanism 5 to stop running according to the trigger signal of the limit switch, so that the support frame 4 stops moving and will not continue to move toward the end of the screw rod 2.

[0049] In addition, in order to avoid interference between two carriers, a distance sensor is provided on one of the two adjacent carriers 4, and the distance sensor is connected to the control device signal. When the distance sensor detects that the distance between the two carriers 4 reaches a preset distance, the control device controls the carriers 4 that are approaching each other to stop moving according to the signal of the distance sensor, so as to avoid collision between the two carriers and damage to the baffle.

[0050] In a possible embodiment, the above-mentioned dual-length sizing machine also includes a ruler, which is extended along the first direction, arranged on one side of the circumference of the spiral rod 2, and fixedly mounted on the frame 1. A marking needle is arranged on the carrier 4, and the marking needle is perpendicular to the extension direction of the ruler, and the short end of the marking needle points to the ruler.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A double-length sizing machine, characterized in that: include: A frame, wherein the frame is provided with a spiral rod extending along a first direction, and the spiral rod is fixedly connected to the frame; At least two baffles are arranged on the frame, each of the baffles has a material-blocking surface, the material-blocking surface is perpendicular to the first direction, and the material-blocking surfaces are arranged along the first direction and have the same direction; A supporting frame corresponding to the baffles one by one and movably mounted on the frame along the first direction; a first driving mechanism corresponding to the carrier frame one by one and used for driving the carrier frame to move along the first direction, the first driving mechanism comprising: a transmission nut sleeved on the spiral rod, and a first power device used for driving the transmission nut to rotate; a radial bearing is respectively provided at both ends of the transmission nut, the inner ring of the radial bearing is fixed to the transmission nut, the outer ring of the radial bearing is fixed to the carrier frame, and the first power device is installed on the carrier frame; Among them, in the corresponding supporting frame and baffle, the supporting frame is provided with a second driving mechanism connected to the baffle and used to drive the baffle to move along a second direction; the second direction is perpendicular to the first direction, and the second direction is parallel to the baffle surface.

2. The double-length cut-to-length machine according to claim 1, characterized in that: The frame includes: two gantries arranged opposite to each other, and a guide part connecting the two gantries; the two ends of the spiral rod are respectively fixedly installed on the top of the two gantries, the guide part is located on one side of the circumference of the spiral rod, and the guide part has a guide groove extending along the first direction on the side facing the spiral rod, each of the supporting frames is connected to an auxiliary bracket, and the auxiliary bracket has a sliding part that slidably cooperates with the guide groove on the side facing the guide groove.

3. The double-sizing machine according to claim 2, characterized in that: The sliding part includes a walking wheel matched with the guide groove.

4. The double-sizing machine according to claim 1, characterized in that: The outer peripheral side of the transmission nut is sleeved with an outer gear ring; The first power device includes an output gear and a motor drivingly connected to the output gear, wherein the motor is used to drive the output gear to rotate around its own axis, and the output gear is meshingly connected to the outer gear ring.

5. The double-sizing machine according to claim 4, characterized in that: A speed reducer is provided between the motor and the output gear.

6. The double-sizing machine according to claim 1, characterized in that: The second driving mechanism includes a first cylinder and a connecting rod mechanism connected to the piston rod of the first cylinder, and the first cylinder is drivingly connected to the baffle through the connecting rod mechanism.

7. The double-sizing machine according to claim 6, characterized in that: In the carrier frame and baffle corresponding to each other: The connecting rod mechanism includes a "V"-shaped rod and a slider; The carrier frame comprises: a connecting bracket connected to the frame, and a supporting frame connected to the connecting bracket and used to carry the second driving mechanism, the supporting frame comprises: a longitudinal connecting portion connected to the connecting bracket and extending along the second direction, and a transverse supporting portion connected to the longitudinal connecting portion and extending along the first direction; The tip of the "V"-shaped rod is rotatably connected to the longitudinal connecting portion, the "V"-shaped opening of the "V"-shaped rod faces the transverse supporting portion, and the rotation axis of the tip of the "V"-shaped rod is parallel to the third direction, and the third direction is perpendicular to the first direction and the second direction; the slider is movably mounted on the transverse supporting portion along the first direction, one end of the "V"-shaped rod is rotatably connected to the side of the baffle plate away from the baffle surface, the rotation axis between one end of the "V"-shaped rod and the baffle plate is parallel to the third direction, and the other end of the "V"-shaped rod is hinged to the slider; the piston rod of the first cylinder is hinged to the slider, and the cylinder body of the first cylinder is rotatably mounted on the transverse supporting portion around an axis parallel to the third direction.

8. The double-sizing machine according to claim 1, characterized in that: The second driving mechanism comprises a second cylinder, the axis of the piston rod of the second cylinder is parallel to the second direction, and the baffle is connected to the piston rod of the second cylinder.

9. The double-sizing machine according to any one of claims 1 to 8, characterized in that: It also includes a control device, which is signal-connected to the first drive mechanism and the second drive mechanism, and each of the first drive mechanisms is independently controlled, and each of the second drive mechanisms is independently controlled.

10. The double-sizing machine according to claim 9, characterized in that: Limit switches are respectively provided at both ends of the spiral rod, and the limit switches are connected to the control device by signals; Among the two adjacent support racks, one of the support racks is provided with a distance sensor, and the distance sensor is connected to the control device by signal.

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