A three-roller symmetrical plate rolling device for rubber-coated roller production

Abstract

The present application discloses a three-roller symmetrical plate rolling device for rubber-coated roller production, including a control unit, an operation panel, a bottom plate, a first side plate and a second side plate, a first lifting block is installed at the first side plate, a second lifting block is installed at the second side plate, a top plate is installed at the top of the first side plate and the second side plate, a screw rod is fixedly connected to the first lifting block and the second lifting block, and a lifting motor unit is installed at the top plate; an upper rotating roller is installed between the first lifting block and the second lifting block; and two lower rotating rollers are also installed between the first side plate and the second side plate. The plate rolling device provided in the present application can pull the upper rotating roller out from the first side plate under the drive of the first hydraulic telescopic rod, thereby realizing automatic material unloading, saving labor costs, and having higher work efficiency. By limiting the lifting slide by the second hydraulic telescopic rod, the position of the lifting slide is made more stable, so that the upper rotating roller can be pulled out more stably, and the safety is high.

Description

Technical Field

[0001] The invention relates to the technical field of rubber-coated roller production, and more specifically to a three-roller symmetrical plate rolling device for producing rubber-coated rollers. Background Art

[0002] The rubber-coated roller is a roller-shaped product made of metal or other materials as the core and rubber covered by vulcanization. There are many ways to produce rubber-coated rollers. One of them is to put the guide roller body into a mold and inject polyurethane into the mold to form it. The mold for producing rubber-coated rollers is usually made of steel plates rolled by a rolling machine.

[0003] With the existing plate rolling machines, after the steel plates are rolled into shape, the finished products need to be removed from the plate rolling machines. However, in actual production, it is inconvenient to remove the finished products. The plate rolling machine cannot be automated, so it is in a state of removing the finished products. The staff needs to do a lot of manual operations, which is more labor-intensive and has lower work efficiency. In addition, the staff frequently operate the unloading steps, which has a high labor intensity and is prone to fatigue, resulting in operational errors in the production process, which will bring certain losses to the processing factory. At the same time, the method of manually removing the finished products requires the staff to frequently contact the plate rolling machine. The staff may be accidentally injured by the plate rolling machine due to operational errors, which poses certain safety risks and delays normal production and processing. Summary of the invention

[0004] The present invention aims to overcome the defects of the prior art and provides a three-roller symmetrical plate rolling device for producing rubber-coated rollers.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: a three-roller symmetrical plate rolling device, comprising a control unit, an operation panel, a bottom plate, a first side plate fixed to the bottom plate, and a second side plate fixed to the bottom plate, the first side plate having a first vertical groove, a first lifting block being installed at the first vertical groove, the second side plate having a second vertical groove, a second lifting block being installed at the second vertical groove, a top plate being installed at the top ends of the first side plate and the second side plate, a screw rod passing through the top plate being fixedly connected to the first lifting block and the second lifting block, and a lifting block being installed at the top plate A lowering motor unit, wherein the lifting motor unit drives a first driving gear, a rotating sleeve is installed on the top plate through a top bearing, the rotating sleeve is fixedly connected to a first driven gear matched with the first driving gear, and the rotating sleeve has a threaded hole matched with the screw rod; an upper rotating roller is installed between the first lifting block and the second lifting block; two lower rotating rollers are also installed between the first side plate and the second side plate, and a second driven gear is installed at the end of each lower rotating roller, and a driving motor is installed on the bottom plate, and a second driving gear meshing with the two second driven gears is installed on the driving motor.

[0006] Furthermore, the operation panel has physical buttons and a touch screen.

[0007] Thereby, the operation of the plate rolling device is facilitated.

[0008] Furthermore, a motor frame is installed on the bottom plate, and the drive motor is installed on the motor frame.

[0009] Thereby the motor frame is convenient for stably mounting the drive motor.

[0010] Furthermore, two second driven gears are located on the outside of the second side plate; the lower rotating roller includes a lower rotating shaft and a lower roller body fixedly connected to the lower rotating shaft, and lower bearings are installed between the lower rotating shaft and the first side plate and the second side plate, and the axes of the two lower rotating shafts are located at the same horizontal height.

[0011] Therefore, the two lower rotating rollers rotate more smoothly under the drive of the second driving gear.

[0012] Further, the upper rotating roller includes an upper rotating shaft, a first articulated seat, a second articulated seat articulated with the first articulated seat, an upper fixed shaft fixedly connected with the second articulated seat, and an upper roller body fixedly connected with the upper rotating shaft, the upper fixed shaft is fixedly connected with the second lifting block; the first lifting block includes a lifting block body and a movable block, the lifting block body has a side open accommodating groove, the movable block is located in the accommodating groove and can leave the accommodating groove, one end of the upper rotating shaft is connected to the movable block through a first upper bearing, and the other end is connected to the first articulated seat through a second upper bearing; the first side plate has a side opening portion connected to the first vertical groove; the upper rotating shaft is also installed with a circular ring portion through a third upper bearing, the second side plate has a vertical slide rail, and a lifting slide is installed on the vertical slide rail, a first hydraulic telescopic rod is connected between the lifting slide and the circular ring portion, one end of the first hydraulic telescopic rod is articulated with the lifting slide, and the other end is articulated with the circular ring portion.

[0013] Thus, the upper rotating roller can be pulled out by driving the first hydraulic telescopic rod.

[0014] Furthermore, both sides of the first vertical groove are provided with a first slide rail, the lifting block body of the first lifting block has a first slide groove cooperating with the first slide rail on the side away from the accommodating groove, and only the part located below the accommodating groove on the side close to the accommodating groove has a first slide groove cooperating with the first slide rail.

[0015] Therefore, the lifting and lowering movement of the first lifting block is more stable under the limitation of the first slide rail and the first slide groove.

[0016] Furthermore, on one side of the lifting block body close to the accommodating groove, only the portion located below the accommodating groove has the first sliding groove, and the portion located above the accommodating groove does not have the first sliding groove.

[0017] Therefore, although only the part located below the accommodating groove has the first slide groove, the limiting of the lifting block body can still be achieved, and only the part located below the accommodating groove has the first slide groove, so that in the process of lifting the lifting block body, there is no problem of positioning and engaging the first slide groove and the first slide rail, and the installation accuracy requirement of the entire device is lower.

[0018] Furthermore, both sides of the second vertical groove are provided with second slide rails, and both sides of the second lifting block are provided with second slide grooves matched with the second slide rails.

[0019] Therefore, the lifting and lowering movement of the second lifting block is more stable under the limitation of the second slide rail and the second slide groove.

[0020] Furthermore, the second side panel is also fixedly connected to a fixed seat, a second hydraulic telescopic rod is installed on the fixed seat, the movable end of the second hydraulic telescopic rod is connected to a U-shaped horizontal slide, the horizontal slide has a horizontal slide groove, the fixed seat has a horizontal slide rail that cooperates with the horizontal slide, the horizontal slide also has a positioning rod, and the lifting slide has a positioning hole that cooperates with the positioning rod.

[0021] Therefore, before the first hydraulic telescopic rod performs pulling out the upper rotating roller, the second hydraulic telescopic rod limits the lifting slide, so that the position of the lifting slide can be more stable, and the operation of pulling out the upper rotating roller is also more stable.

[0022] Furthermore, there are two positioning rods at the horizontal slide seat, and the positioning rods are cylindrical, and the opening ends of the positioning holes are chamfered.

[0023] Furthermore, two arc-shaped spring sheets are fixedly connected to the movable block, and the arc-shaped spring sheets can abut against the side walls of the first vertical groove; the side of the movable block has a third slide rail, and the first vertical slide rail near the side opening of the first vertical groove has a third slide groove that cooperates with the third slide rail, and the third slide groove is located between the two arc-shaped spring sheets.

[0024] Therefore, the cooperation between the third slide rail and the third slide groove can make the sliding of the whole consisting of the lifting block body and the movable block in the first vertical groove more stable. And due to the effect of the arc-shaped spring sheet, before the third slide rail is inserted into the third slide groove, the arc-shaped spring sheet makes the movable block press against the lifting block body, so that the third slide rail is easier to insert into the third slide groove.

[0025] Furthermore, a top block is fixedly connected to the top of the lifting block body; the top plate at the first side plate is fixedly connected to the top block, a limit seat is installed at the top block, the top block has an inner cavity and a through hole connected to the inner cavity, the limit seat includes a limit plate and a limit block fixedly connected to the limit plate and passing through the through hole, the inner cavity has a limit slide rail, the limit plate has a limit slide groove cooperating with the limit slide rail, and a return spring is connected between the limit seat and the top of the inner cavity.

[0026] Furthermore, when the top end of the lifting block body abuts against the bottom end of the top block, the limiting block does not completely block the side opening of the accommodating groove.

[0027] Therefore, at this time, the limiting block will not affect the movable block being driven to leave the accommodating groove.

[0028] Thus, under normal circumstances, the limit plate of the limit seat abuts against the bottom of the inner cavity, so that the limit block partially blocks the side opening, so that the movable block cannot pass through the side opening. Only when the lifting block body pushes the limit seat upward so that the limit block does not block the movement of the movable block, the movable block can move normally, so that the upper rotating roller moves to the unloading position.

[0029] Furthermore, the movable block is in the shape of a cuboid with four chamfered sides.

[0030] Thereby, the movable block can be more easily accommodated in the accommodating groove.

[0031] Furthermore, the lifting slide seat has a third hinge seat hinged to the first hydraulic telescopic rod; the annular portion has a fourth hinge seat hinged to the first hydraulic telescopic rod.

[0032] Beneficial effects:

[0033] 1. The plate rolling device provided in the present application drives the first lifting block and the second lifting block to move through the lifting motor unit, so that the upper rotating roller can achieve stable movement. Under the drive of the first hydraulic telescopic rod, the upper rotating roller can be pulled out from the first side plate, thereby realizing automatic unloading, saving labor costs, and improving work efficiency.

[0034] 2. The lifting slide is limited by the second hydraulic telescopic rod, so that the position of the lifting slide is more stable, so that the upper rotating roller can be pulled out more stably, and the safety is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the plate rolling device being used for normal plate rolling;

[0036] Figure 2 This is a schematic diagram of the first lifting block rising to prepare for unloading, at which time the main body of the lifting block pushes upward against the limit seat;

[0037] Figure 3 The limit seat is pushed upward for the lifting block body until the top of the lifting block body abuts against the bottom of the top block, and the lifting slide seat faces the fixed seat;

[0038] Figure 4 This is a schematic diagram of the positioning rod and the positioning hole cooperating to limit the lifting slide;

[0039] Figure 5 This is a schematic diagram of the first hydraulic telescopic rod pulling out the upper rotating roller, which is convenient for unloading;

[0040] Figure 6 This is a schematic diagram of the first hydraulic telescopic rod resetting the upper rotating roller after unloading is completed;

[0041] Figure 7 This is a schematic diagram of the movable block moving downward, at which time the arc-shaped spring piece abuts against the side wall of the first vertical groove, and the third slide rail has not yet been inserted into the third slide slot;

[0042] Figure 8 The first lifting block continues to move downward and the third slide rail is inserted into the third slide groove.

[0043] Description of reference numerals: 1 bottom plate; 11 first side plate; 111 first lifting block; 112 lifting block body; 113 movable block; 1131 third slide rail; 114 arc-shaped spring piece; 115 top block; 12 second side plate; 121 second lifting block; 122 lifting slide seat; 1221 positioning hole; 13 driving motor; 14 second driving gear; 2 top plate; 21 lifting motor unit; 22 first driving gear; 23 top bearing; 24 rotating sleeve; 25 first driven gear; 3 screw rod; 4 upper rotating Roller; 41 upper rotating shaft; 42 first articulated seat; 43 second articulated seat; 44 upper fixed shaft; 45 upper roller body; 5 lower rotating roller; 51 second driven gear; 52 lower rotating shaft; 53 lower roller body; 54 lower bearing; 6 annular portion; 61 first hydraulic telescopic rod; 62 third articulated seat; 63 fourth articulated seat; 7 fixed seat; 71 second hydraulic telescopic rod; 72 horizontal slide; 721 positioning rod; 8 top block; 81 limit plate; 82 limit block; 83 limit slide rail; 84 return spring. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] The present invention provides Figure 1-8The three-roller symmetrical plate rolling device for rubber-coated roller production shown in the figure includes a control unit, an operation panel, a bottom plate 1, a first side plate 11 fixed to the bottom plate 1, and a second side plate 12 fixed to the bottom plate 1, the first side plate 11 has a first vertical groove, and a first lifting block 111 is installed at the first vertical groove, the second side plate 12 has a second vertical groove, and a second lifting block 121 is installed at the second vertical groove, a top plate 2 is installed at the top of the first side plate 11 and the second side plate 12, the first lifting block 111 and the second lifting block 121 are both fixedly connected with a screw rod 3 passing through the top plate 2, a lifting motor unit 21 is installed at the top plate 2, and the lifting The motor unit 21 drives a first driving gear 22, and a rotating sleeve 24 is installed at the top plate 2 through a top bearing 23. The rotating sleeve 24 is fixedly connected to a first driven gear 25 that cooperates with the first driving gear 22, and the rotating sleeve 24 has a threaded hole that cooperates with the screw rod 3; an upper rotating roller 4 is installed between the first lifting block 111 and the second lifting block 121; two lower rotating rollers 5 are also installed between the first side plate 11 and the second side plate 12, and a second driven gear 51 is installed at the end of each lower rotating roller 5, and a driving motor 13 is installed at the bottom plate 1, and a second driving gear 14 that meshes with the two second driven gears 51 is installed at the driving motor 13.

[0046] The two second driven gears 51 are located on the outside of the second side plate 12; the lower rotating roller 5 includes a lower rotating shaft 52 and a lower roller body 53 fixedly connected to the lower rotating shaft 52, and lower bearings 54 are installed between the lower rotating shaft 52 and the first side plate 11 and the second side plate 12, and the axes of the two lower rotating shafts 52 are located at the same horizontal height; the upper rotating roller 4 includes an upper rotating shaft 41, a first articulated seat 42, a second articulated seat 43 articulated to the first articulated seat 42, an upper fixed shaft 44 fixedly connected to the second articulated seat 43, and an upper roller body 45 fixedly connected to the upper rotating shaft 41, and the upper fixed shaft 44 is connected to the second articulated seat 43. The lifting block 121 is fixedly connected; the first lifting block 111 includes a lifting block body 112 and a movable block 113, the lifting block body 112 has a accommodating groove with a side opening, the movable block 113 is located in the accommodating groove and can leave the accommodating groove, one end of the upper rotating shaft 41 is connected to the movable block 113 through the first upper bearing, and the other end is connected to the first hinge seat 42 through the second upper bearing; the first side plate 11 has a side opening connected to the first vertical groove; the upper rotating shaft 41 is also installed with a circular ring portion 6 through a third upper bearing, and the second side plate 12 has a vertical slide rail, the vertical A lifting slide 122 is installed on the slide rail, and a first hydraulic telescopic rod 61 is connected between the lifting slide 122 and the annular portion 6, one end of the first hydraulic telescopic rod 61 is hinged to the lifting slide 122, and the other end is hinged to the annular portion 6; both sides of the first vertical groove have first slide rails, and the lifting block body 112 of the first lifting block has a first slide groove that cooperates with the first slide rail on the side away from the receiving groove, and only the part below the receiving groove on the side close to the receiving groove has a first slide groove that cooperates with the first slide rail; both sides of the second vertical groove have second slide rails, and both sides of the second lifting block 121 have The second side plate 12 is also fixedly connected to a fixed seat 7, on which a second hydraulic telescopic rod 71 is installed, and a movable end of the second hydraulic telescopic rod 71 is connected to a U-shaped horizontal slide 72, and the horizontal slide 72 has a horizontal slide groove, and the fixed seat 7 has a horizontal slide rail that cooperates with the horizontal slide 72, and the horizontal slide 72 also has a positioning rod 721, and the lifting slide 122 has a positioning hole 1221 that cooperates with the positioning rod 721; there are two positioning rods 721 at the horizontal slide 72, and the positioning rods 721 are cylindrical, and the opening end of the positioning hole 1221 has a chamfer.

[0047] The movable block 113 is fixedly connected with two arc-shaped spring pieces 114, and the arc-shaped spring pieces 114 can abut against the side wall of the first vertical groove; the side of the movable block 113 is provided with a third slide rail 1131, and the first vertical slide rail near the side opening of the first vertical groove is provided with a third slide groove that cooperates with the third slide rail 1131, and the third slide groove is located between the two arc-shaped spring pieces 114; the top of the lifting block body 112 is fixedly connected with a top block 115; the top plate 2 at the first side plate 11 is fixedly connected with a top block 8, and a limited position seat is installed at the top block 8. The block 8 has an inner cavity and a through hole connected to the inner cavity, the limit seat includes a limit plate 81 and a limit block 82 fixedly connected to the limit plate 81 and passing through the through hole, the inner cavity has a limit slide rail 83, the limit plate 81 has a limit slide groove matched with the limit slide rail 83, and a return spring 84 is connected between the limit seat and the top of the inner cavity; the movable block 113 is a rectangular parallelepiped with chamfered four sides; the lifting slide 122 has a third articulated seat 62 hinged to the first hydraulic telescopic rod 61; the annular portion 6 has a fourth articulated seat 63 hinged to the first hydraulic telescopic rod 61.

[0048] Working principle: The plate rolling device provided in the present application has a plate rolling principle similar to that of the plate rolling machine in the prior art, such as Figure 1 As shown, the upper rotating roller can be raised and lowered, the two lower rotating rollers can be rotated, and the height of the upper rotating roller can be electrically adjusted, so that the plate rolling operation is more convenient. In addition, the plate rolling device of the present application is convenient for unloading the finished product after the plate rolling: under the drive of the first hydraulic telescopic rod, the upper rotating roller can be pulled out from the first side plate, so as to realize automatic unloading, save labor costs, and have higher work efficiency. The second hydraulic telescopic rod limits the lifting slide, so that the position of the lifting slide is more stable, so that the upper rotating roller can be pulled out more stably, and the safety is high.

[0049] The specific working process is as follows:

[0050] like Figure 1 As shown, the operator first puts the steel plate between the upper rotating roller and the lower rotating roller, and starts the driving motor to drive the lower rotating roller to rotate, thereby rolling the steel plate into shape.

[0051] After the steel plate is rolled and formed, Figure 2-3 As shown, the lifting motor unit drives the first driving gear, thereby driving the screw rod to drive the first lifting block and the second lifting block to rise. At this time, the top block at the lifting block body of the first lifting block pushes the limit seat upward until the top of the lifting block body abuts the bottom end of the top block. At this time, the lifting slide faces the fixed seat.

[0052] Then, if Figure 4As shown, under the drive of the second hydraulic telescopic rod, the horizontal slide moves at the fixed seat until the positioning rod and the positioning hole cooperate to limit the lifting slide.

[0053] Then, if Figure 5 As shown, under the drive of the first hydraulic telescopic rod, the upper rotating roller is pulled out to the unloading position. At this time, the movable block leaves the accommodating groove and is moved out of the first side plate through the side opening, thereby facilitating unloading. The finished product after rolling can be taken out from the end of the upper rotating roller.

[0054] Then, if Figure 6 As shown, after the material is unloaded, the upper rotating roller is reset under the drive of the first hydraulic telescopic rod, and the movable block is accommodated in the accommodating groove.

[0055] Then, if Figure 7 As shown, under the drive of the second hydraulic telescopic rod, the horizontal slide moves at the fixed seat until the positioning rod disengages from the positioning hole, thereby the lifting slide disengages from the limit, and the first lifting block and the second lifting block are driven downward by the lifting motor unit. At this time, the third slide rail has not yet been inserted into the third slide groove, and the arc-shaped spring piece abuts against the side wall of the first vertical groove, so that the movable block abuts against the lifting block body, so that the positioning of the third slide rail inserted into the third slide groove is more precise, and it is more convenient for the third slide rail to be inserted into the third slide groove.

[0056] Then, if Figure 8 As shown, the lifting motor unit drives the first lifting block and the second lifting block to continue to move downward. At this time, the third slide rail is inserted into the third slide groove until the first lifting block and the second lifting block move downward to the initial position, so that the rolling device can perform the rolling process on the next steel plate.

[0057] Although the present invention has been illustrated and described with respect to the preferred embodiments, it will be appreciated by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A three-roller symmetrical plate rolling device for rubber-coated roller production, characterized in that: The invention comprises a control unit, an operation panel, a bottom plate, a first side plate fixed to the bottom plate, and a second side plate fixed to the bottom plate, wherein the first side plate has a first vertical groove, a first lifting block is installed at the first vertical groove, the second side plate has a second vertical groove, a second lifting block is installed at the second vertical groove, a top plate is installed at the top end of each of the first side plate and the second side plate, a screw rod passing through the top plate is fixedly connected to the first lifting block and the second lifting block, a lifting motor unit is installed at the top plate, the lifting motor unit drives a first driving gear, a rotating sleeve is installed at the top plate through a top bearing, the rotating sleeve is fixedly connected to a first driven gear matched with the first driving gear, and the The rotating sleeve has a threaded hole that cooperates with the screw rod; an upper rotating roller is installed between the first lifting block and the second lifting block; two lower rotating rollers are also installed between the first side plate and the second side plate, and a second driven gear is installed at the end of each lower rotating roller, and a driving motor is installed at the bottom plate, and a second driving gear that meshes with the two second driven gears is installed at the driving motor; the upper rotating roller includes an upper rotating shaft, a first articulated seat, a second articulated seat articulated with the first articulated seat, an upper fixed shaft fixedly connected to the second articulated seat, and an upper roller body fixedly connected to the upper rotating shaft, and the upper fixed shaft is fixedly connected to the second lifting block; the first lifting block includes a lifting block main body and a movable block, and the lifting The lowering block body has a receiving groove with a side opening, the movable block is located in the receiving groove and can leave the receiving groove, one end of the upper rotating shaft is connected to the movable block through a first upper bearing, and the other end is connected to the first hinged seat through a second upper bearing; the first side plate has a side opening connected to the first vertical groove; the upper rotating shaft is also installed with a circular ring portion through a third upper bearing, the second side plate has a vertical slide rail, and a lifting slide is installed on the vertical slide rail, a first hydraulic telescopic rod is connected between the lifting slide and the circular ring portion, one end of the first hydraulic telescopic rod is hinged to the lifting slide, and the other end is hinged to the circular ring portion; both sides of the first vertical groove have first slide rails, and the first lifting The lifting block body of the lowering block has a first slide groove that cooperates with the first slide rail on the side away from the accommodating groove, and a first slide groove that cooperates with the first slide rail on the side close to the accommodating groove and only the part located below the accommodating groove has a first slide groove that cooperates with the first slide rail; both sides of the second vertical groove have second slide rails, and both sides of the second lifting block have second slide grooves that cooperate with the second slide rails; the second side plate is also fixedly connected to a fixed seat, and a second hydraulic telescopic rod is installed on the fixed seat, and the movable end of the second hydraulic telescopic rod is connected to a U-shaped horizontal slide, the horizontal slide has a horizontal slide groove, the fixed seat has a horizontal slide rail that cooperates with the horizontal slide, the horizontal slide also has a positioning rod, and the lifting slide has a positioning hole that cooperates with the positioning rod.

2. The three-roller symmetrical plate rolling device for rubber-coated roller production according to claim 1 is characterized in that: The two second driven gears are located on the outside of the second side plate; the lower rotating roller includes a lower rotating shaft and a lower roller body fixedly connected to the lower rotating shaft, and lower bearings are installed between the lower rotating shaft and the first side plate and the second side plate, and the axes of the two lower rotating shafts are located at the same horizontal height.

3. The three-roller symmetrical plate rolling device for rubber-coated roller production according to claim 1 is characterized in that: There are two positioning rods at the horizontal slide seat, and the positioning rods are cylindrical, and the opening ends of the positioning holes are chamfered.

4. The three-roller symmetrical plate rolling device for rubber-coated roller production according to claim 1 is characterized in that: Two arc-shaped spring sheets are fixedly connected to the movable block, and the arc-shaped spring sheets can abut against the side walls of the first vertical groove; the side of the movable block has a third slide rail, and the first vertical slide rail near the side opening of the first vertical groove has a third slide groove that cooperates with the third slide rail, and the third slide groove is located between the two arc-shaped spring sheets.

5. The three-roller symmetrical plate rolling device for rubber-coated roller production according to claim 1 is characterized in that: A top block is fixedly connected to the top of the lifting block body; the top plate at the first side plate is fixedly connected to the top block, a limit seat is installed at the top block, the top block has an inner cavity and a through hole connected to the inner cavity, the limit seat includes a limit plate and a limit block fixedly connected to the limit plate and passing through the through hole, the inner cavity has a limit slide rail, the limit plate has a limit slide groove cooperating with the limit slide rail, and a return spring is connected between the limit seat and the top of the inner cavity.

6. The three-roller symmetrical plate rolling device for rubber-coated roller production according to claim 1 is characterized in that: The movable block is in the shape of a cuboid with four chamfered sides.

7. The three-roller symmetrical plate rolling device for rubber-coated roller production according to claim 1 is characterized in that: The lifting slide seat is provided with a third hinge seat hinged to the first hydraulic telescopic rod; the annular portion is provided with a fourth hinge seat hinged to the first hydraulic telescopic rod.

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