Forming roll and its sealing structure

Abstract

The application relates to a forming roller and a sealing structure thereof, which comprises a sealing ring, an inflation device and a repairing device, the sealing ring is arranged on an annular groove of an inner roller, a circumferential outer wall of the sealing ring is arranged to abut against a circumferential inner wall of the inner roller, a hollow annular groove is arranged in the sealing ring, the inflation device is used for inflating the hollow annular groove, and the repairing device is used for repairing cracks on the sealing ring so that the hollow annular groove in the sealing ring is always kept in a closed state. After the sealing ring is damaged, the repairing device is used for repairing the sealing ring, the hollow annular groove is always kept in a closed state, then the inflation device inflates the hollow annular groove, the sealing ring can play an effective sealing effect again, the service life of the sealing ring is prolonged, meanwhile, the sealing ring does not need to be replaced and the forming roller does not need to be disassembled in the whole process, and the operation burden of operators can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of forming rollers, in particular to a forming roller and a sealing structure thereof. BACKGROUND

[0002] A granulator is a kind of material particle manufacturing equipment, and a sheet material passes through the middle of two rotating forming rollers, and the forming rollers are provided with recessed holes for extruding the sheet material into particles.

[0003] The forming roller of the related art comprises an end sleeve 11, an inner roller 12, and a forming sleeve 13 sleeved on the inner roller 12, a plurality of recessed holes 131 are formed on the surface of the forming sleeve 13, one end of the inner roller 12 is coaxially sleeved with a fixing ring 14, the end sleeve 11 is threadedly connected to the other end of the inner roller 12, a single key is arranged on the inner roller 12 in a direction parallel to the axis of the inner roller 12, the single key is located between the fixing ring 14 and the end sleeve 11, a key groove matched with the single key is formed on the forming sleeve 13, and the two end faces of the forming sleeve 13 abut against the fixing ring 14 and the end sleeve 11 respectively after the forming sleeve 13 is installed. Figure 1 Two annular grooves 15 are formed on the outer wall of the inner roller 12 for sleeving a sealing ring, the sealing ring is arranged in the annular groove 15, the sealing ring is used for sealing the two ends of the forming sleeve 13, and the outer wall of the sealing ring abuts against the inner wall of the forming sleeve 13 and is used for preventing cooling water or external dust from entering the inside of the forming sleeve 13.

[0004] The related technical solution has the following defects: the sealing ring has a certain service life, the sealing ring will be damaged, thereby affecting the sealing effect, and the operator needs to disassemble the end sleeve and the forming sleeve to replace the sealing ring at regular intervals, and the whole process is relatively troublesome. SUMMARY

[0005] In order to prolong the service life of the sealing ring, the present application provides a forming roller and a sealing structure thereof.

[0006] The sealing structure of the forming roller provided by the present application adopts the following technical solution:

[0007] The sealing structure of the forming roller comprises a sealing ring, an inflation device, and a repairing device, the sealing ring is arranged on the annular groove of the inner roller, the circumferential inner wall of the sealing ring abuts against the circumferential outer wall of the inner roller, a hollow annular groove is formed in the sealing ring, the inflation device is used for inflating the hollow annular groove, and the repairing device is used for repairing the cracks on the sealing ring so that the hollow annular groove in the sealing ring is always kept in a closed state.

[0008] By adopting the technical scheme, when the sealing ring is damaged, the repairing device is used to repair the sealing ring, so that the hollow ring groove always maintains a closed state, and then the inflating device inflates the hollow ring groove, so that the sealing ring re-plays an effective sealing effect, prolonging the service life of the sealing ring, and the whole process does not need to replace the sealing ring or disassemble the forming roller, thereby reducing the work burden of the operator.

[0009] Preferably, the inflating device comprises a driving member one, an inflating member and a first rod, a first channel communicating with the outside is arranged on the inner wall of the side of the hollow ring groove facing the inner roller axis, a first one-way valve is arranged on the first channel, the first one-way valve only allows outside gas to enter the hollow ring groove, the first rod is slidingly connected to the inner roller along a sliding direction from close to the first channel to away from the first channel, the driving member one drives the first rod to slide, a second channel is arranged on the end face of one end of the first rod close to the sealing ring, one end of the second channel away from the sealing ring is connected with the inflating member, and the inflating member is used to inflate the second channel.

[0010] By adopting the technical scheme, when the sealing ring is damaged, the repairing device is used to repair the sealing ring, so that the hollow ring groove always maintains a closed state, and then the inflating device inflates the hollow ring groove, so that the sealing ring re-plays an effective sealing effect, prolonging the service life of the sealing ring, and the whole process does not need to replace the sealing ring or disassemble the forming roller, thereby reducing the work burden of the operator.

[0011] Preferably, the inflating device comprises a driving member one, an inflating member and a first rod, a first channel communicating with the outside is arranged on the inner wall of the side of the hollow ring groove facing the inner roller axis, a first one-way valve is arranged on the first channel, the first one-way valve only allows outside gas to enter the hollow ring groove, the first rod is slidingly connected to the inner roller along a sliding direction from close to the first channel to away from the first channel, the driving member one drives the first rod to slide, a second channel is arranged on the end face of one end of the first rod close to the sealing ring, one end of the second channel away from the sealing ring is connected with the inflating member, and the inflating member is used to inflate the second channel.

[0012] By adopting the technical scheme, when the sealing ring is damaged, the repairing device is used to repair the sealing ring, so that the hollow ring groove always maintains a closed state, and then the inflating device inflates the hollow ring groove, so that the sealing ring re-plays an effective sealing effect, prolonging the service life of the sealing ring, and the whole process does not need to replace the sealing ring or disassemble the forming roller, thereby reducing the work burden of the operator.

[0013] Preferably, the first rod is provided with a first guide surface at one end close to the first channel, the first guide surface is gradually tapered from the end far away from the first channel to the end close to the first channel, the first channel is provided with a first guide groove matching the end of the first rod at one end close to the first rod, and the first guide surface is attached to the inner wall of the first guide groove when the first rod is moved to abut on the corresponding sealing ring.

[0014] The second rod is provided with a second guide surface at one end close to the third channel, the second guide surface is gradually tapered from the end far away from the third channel to the end close to the third channel, the third channel is provided with a second guide groove matching the end of the second rod at one end close to the second rod, and the second guide surface is attached to the inner wall of the second guide groove when the second rod is moved to abut on the corresponding sealing ring.

[0015] By adopting the above technical scheme, the end of the first rod extends into the first guide groove, the end of the second rod extends into the second guide groove, the first rod and the second rod can position the sealing ring, and the first rod and the second rod can be closer to the hollow ring groove, so that the hollow ring groove is filled with gas and repair glue more quickly.

[0016] Preferably, the driving member one and the driving member two are the same driving member, the driving member one comprises a driving rod and a center rod, the center rod is located between the first rod and the second rod, the center rod is slidingly connected in the inner roller along the axis direction parallel to the inner roller, and the first rod and the second rod are slidingly connected in the inner roller along the sliding direction perpendicular to the center rod.

[0017] The center rod is provided with two first blocks, the first rod and the second rod are provided with a first inclined surface on the side surface facing the center rod, the distance between the end of the first inclined surface close to the center rod and the end far away from the center rod gradually decreases from the end sleeve, the two first blocks correspond to the two first inclined surfaces respectively, and the first block is always abutted on the corresponding first inclined surface.

[0018] The driving rod is close to the end of the first rod far away from the fixed ring, the driving rod is slidingly connected in the inner roller along the sliding direction parallel to the first rod, the second inclined surface is formed on the side surface of the driving rod facing the center rod, the distance between the end of the second inclined surface close to the center rod and the end far away from the center rod gradually increases from the fixed ring, the center rod is provided with a second spring, and the second spring is used to drive the end of the center rod close to the end sleeve to be always abutted on the second inclined surface.

[0019] The first spring is arranged on the center rod and is used to drive the center rod to always move towards the side of the driving rod, the end of the driving rod always extends out of the inner roller and is located in the mounting area of the end cover, the end of the driving rod extending out of the inner roller is provided with a third inclined surface, the distance between the end of the third inclined surface close to the fixed ring and the end of the third inclined surface far away from the fixed ring and the center rod gradually decreases, and when the end cover is mounted on the inner roller, the driving rod abuts against the inner wall of the end sleeve.

[0020] By adopting the technical scheme, the operator installs the sealing ring, and then installs the end cover, the end cover abuts against the third inclined surface to push the driving rod to move towards the side of the center rod, the center rod pushes the first rod and the second rod to extend into the corresponding first guide groove and second guide groove, so that the sealing ring is positioned.

[0021] Preferably, the detection device is further arranged, and the detection device is used to detect the sealing property of the sealing ring, the detection device comprises two pressure sensors, the two pressure sensors are arranged at the abutting positions of the fixed ring and the end sleeve and the sealing ring respectively, and the pressure sensors are used to detect the acting force of the sealing ring on the fixed ring or the end sleeve.

[0022] By adopting the technical scheme, the hollow ring groove can cause the sealing ring to expand after being filled with gas, so that the sealing ring can be tightly attached to the inner wall of the forming sleeve, thereby sealing the forming sleeve, the pressure sensor detects the air tightness of the sealing ring by detecting the acting force of the sealing ring abutting against the fixed ring or the end sleeve, and when the value received by the pressure sensor is abnormal, the operator can be informed in time that the air tightness of the sealing ring has a problem, so that the operator can inflate and repair the sealing ring in time.

[0023] Preferably, the receiving table is further arranged, the inflation member comprises a first receiving member, a third driving member, a first pipe, a first connecting pipe, a first piston and an inflation box with a first inner cavity, the first receiving member is arranged on the inner roller, two ends of the first pipe are communicated with the second channel and the first receiving member respectively, the inflation box is arranged on the receiving table, the first piston is slidably connected to the first inner cavity, the third driving member drives the first piston to move back and forth, the first piston divides the first inner cavity into two first cavities which are not communicated with each other, two ends of the first connecting pipe are communicated with the first receiving member and one of the first cavities respectively, an air inlet which is communicated with the outside is arranged on the first inner cavity, a second one-way valve is arranged on the air inlet, the second one-way valve is only used for allowing the outside gas to enter the first inner cavity, the air inlet is arranged close to the first connecting pipe, and the first receiving member is used to receive the first pipe and the first connecting pipe and make them communicated with each other.

[0024] The repairing device comprises a second receiving member, a fourth driving member, a second pipe, a second connecting pipe, a second piston and a repairing box with a second inner cavity, the second receiving member is arranged on the inner roller, two ends of the second pipe are communicated with the fourth channel and the second receiving member respectively, the repairing box is arranged on the receiving table, the second piston is slidingly connected to the second inner cavity, the fourth driving member drives the second piston to move back and forth, the second piston divides the second inner cavity into two second cavities which are not communicated with each other, two ends of the second connecting pipe are communicated with the second receiving member and one of the second cavities respectively, a liquid inlet which is communicated with the outside is arranged on the second inner cavity, a third one-way valve is arranged on the liquid inlet to allow only the repairing glue from the outside to enter the second inner cavity, the liquid inlet is arranged close to the second connecting pipe, and the second receiving member is used to receive the second pipe and the second connecting pipe and make them communicated with each other.

[0025] By adopting the above technical scheme, the third driving member drives the first piston to move, when the first piston is located at the side of the air inlet close to the first connecting pipe, the gas in the first inner cavity can be pressed into the first connecting pipe by the piston, and then injected into the hollow ring groove through the first receiving member and the first pipe, when the first piston is located at the side of the air inlet away from the first connecting pipe, the outside gas can enter the first inner cavity to inflate the first inner cavity.

[0026] The fourth driving member drives the second piston to move, the repairing glue is sucked and then injected into the hollow ring groove, and with the rotation of the sealing roller, the repairing glue can be evenly applied on the inner wall of the hollow ring groove to repair the inner wall.

[0027] Preferably, the first receiving member and the second receiving member are the same receiving member, the first receiving member comprises a support block and two rotating blocks, one of the rotating blocks is fixed on the support block, the support block is arranged on the ground and is used to provide support for the corresponding rotating block, the other rotating block is coaxially fixedly connected to the end face of one end of the inner roller, the two rotating blocks are coaxially and rotatably connected together, four annular flow channels are coaxially arranged in the rotating blocks, the corresponding annular flow channels in the two rotating blocks are communicated with each other, two first pipes and two second pipes are respectively corresponding to the four annular flow channels, one end of the first pipe and the second pipe away from the second channel and the fourth channel is communicated with the corresponding annular flow channel of the rotating block fixed on the inner roller, two first connecting pipes and two second connecting pipes are respectively corresponding to the four annular flow channels, one end of the first connecting pipe and the second connecting pipe away from the first cavity and the second cavity is communicated with the corresponding annular flow channel of the rotating block fixed on the support block.

[0028] By adopting the above technical scheme, the two rotating blocks are used to receive the first pipe and the second pipe rotating with the inner roller and the first connecting pipe and the second connecting pipe which are stationary.

[0029] Preferably, the third driving member and the fourth driving member are the same driving member, the third driving member comprises a cylinder and a rotating disc, the rotating disc is rotationally connected to the receiving table, the cylinder is arranged on the rotating disc, the inflation box and the repairing box are sequentially arranged on the outer periphery of the cylinder, a clamping block is arranged on the piston rod of the cylinder, the first piston and the second piston are both provided with a clamping groove matched with the clamping block on the side surface facing the cylinder, and the inflation box and the repairing box are both provided with an opening through which the clamping block passes.

[0030] By adopting the above technical scheme, the rotating disc can drive the cylinder to face different inflation boxes or repairing boxes, and the corresponding sealing ring can be repaired and inflated.

[0031] The application also provides a forming roller adopting the following technical scheme.

[0032] Preferably, the forming sleeve is provided with a plurality of recessed holes on the surface, a fixing ring is fixedly arranged on the inner roller, the end sleeve is threadedly connected to the inner roller, the two end faces of the forming sleeve are respectively abutted against the fixing ring and the end sleeve, and the outer wall of the inner roller is provided with two annular grooves for sleeving the sealing ring.

[0033] By adopting the above technical scheme, different components of the forming roller can be disassembled, and the service life of the forming roller can be prolonged by replacing damaged components.

[0034] In summary, the application has at least one beneficial technical effect as follows.

[0035] By arranging the inflation device, the inflation device inflates the sealing ring groove, so that the sealing ring expands and plays a sealing role again.

[0036] By arranging the repairing device, the repairing device is used for repairing the sealing ring, so that the hollow ring groove is kept in a sealed state again, and the inflation member inflates the hollow ring groove again, so that the gas cannot leak out, and the sealing ring can play a better sealing role again. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a schematic diagram of the overall structure of the related art and the embodiment one of the application.

[0038] Figure 2 is a schematic diagram of the overall structure of the embodiment two of the application.

[0039] Figure 3 is Figure 2 is a partial sectional view of line A-A.

[0040] Figure 4 isFigure 3 Enlarged view at A.

[0041] Figure 5 is Figure 3 Enlarged view at B.

[0042] Figure 6 is Figure 3 Enlarged view at C.

[0043] Figure 7 is Figure 2 Partial sectional view along line B-B.

[0044] Figure 8 is Figure 2 Partial sectional view along line C-C.

[0045] Figure 9 is Figure 3 Enlarged view at D.

[0046] BRIEF DESCRIPTION OF DRAWINGS 1, forming roller; 11, end sleeve; 12, inner roller; 13, forming sleeve; 131, concave hole; 14, fixed ring; 15, annular groove; 17, sealing ring; 171, hollow annular groove; 172, first channel; 1721, first guide groove; 173, third channel; 1731, second guide groove; 174, first one-way valve; 175, extension pipe; 2, inflating device; 21, first rod; 211, second channel; 212, first guide surface; 3, repairing device; 31, second rod; 311, fourth channel; 312, second guide surface; 41, driving member one; 42, driving member two; 43, center rod; 431, first block; 44, driving rod; 441, protruding block; 442, second inclined surface; 443, third inclined surface; 45, first inclined surface; 46, transverse groove; 461, first spring; 47, inner groove; 471, second spring; 5, detecting device; 51, pressure sensor; 6, receiving table; 61, inflating member; 611, first receiving member; 6111, clamping block; 612, driving member three; 613, first pipe; 614, first connecting pipe; 615, first piston; 616, inflating box; 6161, first inner cavity; 617, air inlet; 6171, second one-way valve; 62, repairing member; 621, second receiving member; 622, driving member four; 623, second pipe; 624, second connecting pipe; 625, second piston; 6251, clamping groove; 626, repairing box; 6261, second inner cavity; 627, liquid inlet; 6271, third one-way valve; 628, box body; 63, speed reducer motor; 64, rotating disc; 65, air cylinder; 66, rotating block; 661, annular flow passage; 67, supporting block; 68, opening. DETAILED DESCRIPTION

[0047] The following detailed description is made in connection with the accompanying drawings. Figures 1-9The application is further described in detail.

[0048] The application discloses a forming roller and a sealing structure thereof.

[0049] Embodiment one

[0050] With reference to Figure 1 , Figure 2 The forming roller 1 comprises an end sleeve 11, an inner roller 12 and a forming sleeve 13 sleeved on the inner roller 12. The forming sleeve 13 is provided with a plurality of concave holes 131 on the surface. One end of the inner roller 12 in the length direction is coaxially sleeved with a fixing ring 14. The end sleeve 11 is threadedly connected to the other end of the inner roller 12. A single key is fixed on the outer wall of the inner roller 12, and the length direction of the single key is parallel to the axis direction of the inner roller 12. The single key is located between the fixing ring 14 and the end sleeve 11. The forming sleeve 13 is provided with a key groove matched with the single key. The forming sleeve 13 is slidably sleeved on the inner roller 12. When the forming sleeve 13 is installed, the two end faces of the forming sleeve 13 abut against the fixing ring 14 and the end sleeve 11 respectively. The outer wall of the inner roller 12 is provided with two annular grooves 15 for sleeving a sealing ring. The annular grooves 15 are used for installing a sealing structure. The sealing structure is used for sealing the two ends of the forming sleeve 13 and preventing cooling water or external dust from entering the inside of the forming sleeve 13.

[0051] The sheet material passes between the two rotating forming rollers 1. When the sheet material is extruded, the concave holes 131 on the two forming rollers 1 are arranged opposite to each other and used for extruding the sheet material into particles.

[0052] Embodiment two

[0053] With reference to Figure 3 , Figure 4 The sealing structure comprises a sealing ring 17, an inflation device 2 and a repairing device 3. The sealing ring 17 is made of a deformable material such as silica gel or rubber. The sealing ring 17 is used for being installed on the annular groove 15 of the inner roller 12. The sealing ring 17 is internally provided with a hollow annular groove 171 which is coaxially arranged with the sealing ring 17 and does not communicate with the outside. The inflation device 2 is used for inflating the hollow annular groove 171. The repairing device 3 is used for repairing the cracks on the sealing ring 17 so that the hollow annular groove 171 in the sealing ring 17 always maintains a closed state. When the forming roller 1 is installed, the inflation device 2 is used for inflating the hollow annular groove 171. After inflation, the circumferential inner wall of the sealing ring 17 is tightly attached to the circumferential outer wall of the inner roller 12.

[0054] With reference to Figure 3 , Figure 4, the inflating device 2 comprises the driving member one 41, the inflating member 61 and the first rod 21, the hollow annular groove 171 is provided with the first channel 172 penetrating the sealing ring 17 on the inner wall of the one side of the inner roller 12 axis, the length direction of the first channel 172 is perpendicular to the axis direction of the sealing ring 17, and the extension line of the length direction of the first channel 172 intersects with the inner roller 12 axis at a point. The first one-way valve 174 is installed on the first channel 172, and the first one-way valve 174 only allows external gas to enter the hollow annular groove 171. The first rod 21 is slidably connected to the inner roller 12 along the length direction parallel to the first channel 172, the driving member one 41 drives the first rod 21 to slide, and the second channel 211 is formed in the end face of the one end of the first rod 21 close to the sealing ring 17. When the first rod 21 moves to the side of the first channel 172 and abuts against the corresponding sealing ring 17, the one end of the first channel 172 and the second channel 211 close to each other is communicated. The one end of the second channel 211 away from the sealing ring 17 is connected with the inflating member 61, and the inflating member 61 is used for inflating the second channel 211.

[0055] Referring to Figure 3 , Figure 5 , the repairing device 3 comprises the driving member two 42, the repairing member 62 and the second rod 31, the hollow annular groove 171 is provided with the third channel 173 penetrating the sealing ring 17 on the inner wall of the one side of the inner roller 12 axis, the length direction of the third channel 173 is perpendicular to the axis direction of the sealing ring 17, the extension line of the length direction of the third channel 173 intersects with the inner roller 12 axis at a point, and the first channel 172 and the third channel 173 are arranged opposite to each other. The second rod 31 is slidably connected to the inner roller 12 along the length direction parallel to the third channel 173, the driving member two 42 drives the second rod 31 to slide, and the fourth channel 311 is formed in the end face of the one end of the second rod 31 close to the sealing ring 17. When the second rod 31 moves to the side of the third channel 173 and abuts against the corresponding sealing ring 17, the one end of the third channel 173 and the fourth channel 311 close to each other is communicated. The one end of the fourth channel 311 away from the sealing ring 17 is connected with the repairing member 62, and the repairing member 62 is used for injecting the repairing glue capable of repairing the cracks on the sealing ring 17 into the fourth channel 311.

[0056] Referring to Figure 3 , in order to enable the first channel 172 to automatically align with the second channel 211 and the third channel 173 to automatically align with the fourth channel 311 after the sealing ring 17 is installed, two positioning blocks (not shown in the figure) are fixed on the inner wall of the sealing ring 17, the two positioning blocks are arranged opposite to each other and close to the two ends of the sealing ring 17, and two positioning grooves matched with the two positioning blocks are formed in the inner wall of the annular groove 15. Figure 4 、 Figure 5When the sealing block is installed in the annular groove 15, the operator inserts the two positioning blocks into the two positioning grooves. When the sealing block is completely in the annular groove 15, the positioning blocks are in the positioning grooves, the first channel 172 is aligned with the second channel 211, and the third channel 173 is aligned with the fourth channel 311.

[0057] Reference Figure 3 , Figure 4 A first guide surface 212 is provided on the outer wall of the first rod 21 near the first channel 172. The first guide surface 212 causes the end of the first rod 21 to gradually taper from away from the first channel 172 to near the first channel 172. A first guide groove 1721 matching the end of the first rod 21 is provided on the end of the first channel 172 near the first rod 21. When the first rod 21 moves to abut against the corresponding sealing ring 17, the first guide surface 212 can completely fit against the inner wall of the first guide groove 1721.

[0058] Reference Figure 3 , Figure 5 The second rod 31 has a second guide surface 312 at one end near the third channel 173. The second guide surface 312 causes the end of the second rod 31 to gradually taper from away from the third channel 173 to near the third channel 173. The third channel 173 has a second guide groove 1731 at one end near the second rod 31 that matches the end of the second rod 31. When the second rod 31 moves to abut against the corresponding sealing ring 17, the second guide surface 312 can completely fit against the inner wall of the second guide groove 1731.

[0059] Reference Figure 4 , Figure 5 The first rod 21 extends into the first guide groove 1721, and the second rod 31 extends into the second guide groove 1731. The first rod 21 and the second rod 31 can serve to position the sealing ring 17. In order to further improve the positioning effect of the sealing ring 17, the first guide groove 1721, the second guide groove 1731 and the two positioning blocks are evenly distributed on the sealing ring 17 along the circumferential direction of the sealing ring 17.

[0060] Reference Figure 4 , Figure 5 To prevent the repair adhesive flowing within the hollow annular groove 171 from affecting the inflation device 2, an extension tube 175 is fixed to the third channel 173. One end of the extension tube 175 is connected to the third channel 173, and the other end extends to the outer wall near the hollow annular groove 171. Simultaneously, the end of the first one-way valve 174 within the first channel 172 extends out of the first channel 172 towards the hollow annular groove 171.

[0061] Reference Figure 3 , Figure 6Drive component 1 41 and drive component 2 42 are the same drive component. Drive component 1 41 includes a central rod 43 and two drive rods 44. A transverse groove 46 is coaxially formed inside the inner roller 12. The central rod 43 is slidably connected in the transverse groove 46 along a direction parallel to the axis of the inner roller 12. The central rod 43 is located between the first rod 21 and the second rod 31, and is located on the side of the end sleeve 11 near the sealing ring 17. A first spring 461 is provided in the transverse groove 46. The two ends of the first spring 461 are respectively fixedly connected to the end of the transverse groove 46 away from the end sleeve 11 and the end of the central rod 43 away from the end sleeve 11.

[0062] Reference Figure 3 , Figure 6 Two sets of first blocks 431 are fixed on the outer wall of the central rod 43. The two sets of first blocks 431 correspond to the two sealing rings 17 on the forming roller 1, and each set of first blocks 431 includes two first blocks 431. The first rod 21 and the second rod 31 are both provided with a first inclined surface 45 on the side facing the central rod 43. The distance from the end sleeve 11 of the first inclined surface 45 near the central rod 43 to the end away from the central rod 43 gradually decreases. The two first blocks 431 correspond to the two first inclined surfaces 45, and the first blocks 431 always abut against the corresponding first inclined surfaces 45.

[0063] Reference Figure 3 , Figure 6 The drive rod 44 is located at the end near the first rod 21 and away from the first spring 461. The two drive rods 44 are located on opposite sides of the first rod 21 and are always slidably connected to the inner roller 12 along a sliding direction parallel to the first rod 21. A second inclined surface 442 is provided on the side of the drive rod 44 facing the center rod 43. The distance between the second inclined surface 442 near the center rod 43 and the end away from the center rod 43 and the first spring 461 gradually increases. A protrusion 441 is fixed to the outer wall of the drive rod 44. An inner groove 47 is provided on the inner roller 12 for the protrusion 441 to move. The protrusion 441 is slidably connected to the inner groove 47 along a sliding direction parallel to the drive rod 44. A second spring 471 is provided in the inner groove 47. The two ends of the second spring 471 are fixed to the end wall of the inner groove 47 and the protrusion 441, respectively. Under the action of the second spring 471, the end of the center rod 43 near the end sleeve 11 always abuts against the second inclined surface 442.

[0064] Reference Figure 3 , Figure 6When no external force is applied, the first spring 461 drives the center rod 43 to move towards the side away from the first spring 461, and under the action of the center rod 43, the end of the driving rod 44 always protrudes out of the inner roller 12 and is located in the mounting area of the end cover. The end of the driving rod 44 protruding out of the inner roller 12 is provided with a third inclined surface 443, and the distance from the end of the third inclined surface 443 close to the first spring 461 to the end of the third inclined surface 443 away from the first spring 461 gradually decreases from the center rod 43. When the end cover is mounted on the inner roller 12, the end cover will abut against the third inclined surface 443 to push the driving rod 44 to move towards the side of the center rod 43, and finally the driving rod 44 will abut against the inner wall of the end sleeve 11; refer to Figure 4 、 Figure 5 At the same time, the center rod 43 will push the first rod 21 and the second rod 31 to extend into the corresponding first guide groove 1721 and the second guide groove 1731, so as to further position the sealing ring 17.

[0065] Refer to Figure 3 、 Figure 4 The inner roller 12 is provided with a detection device 5, and the detection device 5 is used to detect the sealing performance of the sealing ring 17. The detection device 5 includes two pressure sensors 51, which are respectively arranged at the abutting positions of the sealing ring 17 and the fixed ring 14 and the end sleeve 11. The pressure sensor 51 is used to detect the force of the sealing ring 17 abutting against the fixed ring 14 or the end sleeve 11. When the value detected by the pressure sensor 51 is less than the normal value, it indicates that the air pressure in the sealing ring 17 is insufficient, and at this time the inflation device 2 is used to inflate the sealing ring 17. After inflation, if the value of the pressure sensor 51 is less than the normal value again within a short time, it indicates that the sealing ring 17 has a serious air leakage problem, and at this time the repair device 3 is used to repair the sealing ring 17, and then the inflation device 2 is used to inflate the sealing ring 17.

[0066] Refer to Figure 3 、 Figure 4 Since the hollow ring groove 171 will cause the sealing ring 17 to expand after being filled with gas, the sealing ring 17 can be tightly attached to the inner wall of the forming sleeve 13, thereby sealing the forming sleeve 13. The pressure sensor 51 detects the air tightness of the sealing ring 17 by detecting the force of the sealing ring 17 abutting against the fixed ring 14 or the end sleeve 11. When the value received by the pressure sensor 51 is abnormal, it can help the operator to know that the air tightness of the sealing ring 17 has a problem, so that the operator can inflate and repair the sealing ring 17 in time.

[0067] Refer to Figure 2 、 Figure 3 A supporting table 6 is placed on the ground, and the inflation member 61 includes a first supporting member 611, a driving member three 612, and a first pipe 613. Refer to Figure 2 、 Figure 7The inflatable member 61 further comprises a first connecting pipe 614, a first piston 615 and an inflatable box 616 with a first inner cavity 6161. Referring to Figure 2 , Figure 3 The first receiving member 611 is arranged on the inner roller 12, and the two ends of the first pipe 613 are respectively communicated with one end of the second channel 211 away from the first channel 172 and the first receiving member 611. Referring to Figure 2 , Figure 7 The inflatable box 616 is fixed on the top surface of the receiving table 6, the first piston 615 is slidingly connected to the first inner cavity 6161, the driving member three 612 drives the first piston 615 to move back and forth, the first piston 615 divides the first inner cavity 6161 into two first cavities that are not communicated with each other, the two ends of the first connecting pipe 614 are respectively communicated with the first receiving member 611 and one of the first cavities, and the inner top wall of the first inner cavity 6161 is provided with an air inlet 617 communicated with the outside, and the air inlet 617 is provided with a second one-way valve 6171, which only allows outside gas to enter the first inner cavity 6161. The air inlet 617 is located on one side of the first inner cavity 6161 close to the communication position of the first connecting pipe 614 and the first cavity. Referring to Figure 2 , Figure 3 The first receiving member 611 is used to receive the first pipe 613 and the first connecting pipe 614 and enable the first pipe 613 and the first connecting pipe 614 to be communicated with each other.

[0068] Referring to Figure 2 , Figure 3 The repairing member 62 comprises a second receiving member 621, a driving member four 622, a second pipe 623, referring to Figure 2 , Figure 8 a second connecting pipe 624, a second piston 625 and a repairing box 626 with a second inner cavity 6261. Referring to Figure 2 , Figure 3 The second receiving member 621 is arranged on the inner roller 12, and the two ends of the second pipe 623 are respectively communicated with one end of the fourth channel 311 away from the third channel 173 and the second receiving member 621. Referring to Figure 2 , Figure 8 The repairing box 626 is fixed on the top surface of the receiving table 6, the second piston 625 is slidingly connected to the second inner cavity 6261, the second piston 625 divides the second inner cavity 6261 into two second cavities that are not communicated with each other, the two ends of the second connecting pipe 624 are respectively communicated with the second receiving member 621 and one of the second cavities, and the top wall of the second inner cavity 6261 is provided with a liquid inlet 627 communicated with the outside.

[0069] Referring to Figure 2 , Figure 8The top surface of the repairing box 626 is fixed with a box 628 containing repairing glue. The top end of the liquid inlet 627 can directly communicate with the repairing glue in the box 628. The third one-way valve 6271 is installed on the liquid inlet 627. The third one-way valve 6271 only allows the repairing glue in the box 628 to enter the second inner cavity 6261. The liquid inlet 627 is close to the side of the communication part of the second connecting pipe 624 and the second cavity. Refer to Figure 2 、 Figure 3 The second receiving member 621 is used to receive the second pipe 623 and the second connecting pipe 624 and make them communicate with each other.

[0070] Refer to Figure 2 、 Figure 9 The first receiving member 611 and the second receiving member 621 are the same receiving member. The first receiving member 611 includes a support block 67 and two rotating blocks 66. The support block 67 is fixed on the ground. One of the rotating blocks 66 is fixed on the support block 67. The other rotating block 66 is coaxially fixedly connected to one end surface of the inner roller 12. The two rotating blocks 66 are coaxially connected together on the side surface opposite to each other and abutted. Four annular flow channels are coaxially arranged in the rotating block 66. The four annular flow channels 661 on one of the rotating blocks 66 correspond to the four annular flow channels on the other rotating block 66 one by one. The corresponding annular flow channels in the two rotating blocks 66 communicate with each other.

[0071] Refer to Figure 2 、 Figure 9 The two first pipes 613 and the two second pipes 623 correspond to the four annular flow channels fixed on the inner roller 12 one by one. The ends of the first pipe 613 and the second pipe 623 away from the second channel 211 and the fourth channel 311 communicate with the corresponding annular flow channels. The two first connecting pipes 614 and the two second connecting pipes 624 correspond to the four annular flow channels of the rotating block 66 fixed on the support block 67 one by one. The ends of the first connecting pipe 614 and the second connecting pipe 624 away from the first cavity and the second cavity communicate with the corresponding annular flow channels.

[0072] Refer to Figure 7 、 Figure 8The driving member three 612 and the driving member four 622 are the same driving member, the driving member three 612 comprises a cylinder 65 and a rotating disc 64, the rotating disc 64 is rotationally connected on the receiving table 6 along the vertical axis direction, a speed reducer 63 is fixed on the inner bottom surface of the receiving table 6, the output shaft of the speed reducer 63 vertically extends upwards and is fixed on the rotating disc 64, and the cylinder 65 is fixedly connected on the top surface of the rotating disc 64. The two inflation boxes 616 and the two repair boxes 626 are evenly distributed on the outer periphery of the cylinder 65, and the communication positions of the first connecting pipe 614 and the first cavity and the communication positions of the second connecting pipe 624 and the second cavity are arranged away from the cylinder 65. When the piston rod of the cylinder 65 rotates to be opposite to the inflation box 616 or the repair box 626, the moving directions of the first piston 615 and the second piston 625 are both parallel to the length direction of the piston rod at this time.

[0073] With reference to Figure 7 , Figure 8 The piston rod of the cylinder 65 is fixed with a clamping block 6111, the side surface of the first piston 615 and the second piston 625 towards the cylinder 65 is provided with a clamping groove 6251 matched with the clamping block 6111, and the inflation box 616 and the repair box 626 are respectively provided with an opening 68 for the clamping block 6111 to pass in. When the piston rod of the cylinder 65 extends, the piston rod of the cylinder 65 pushes the first piston 615 or the second piston 625 to move to the side away from the cylinder 65 and abut against the end wall of the first inner cavity 6161 or the second inner cavity 6261, at this time, the clamping block 6111 is clamped in the clamping groove 6251. When the piston rod of the cylinder 65 retracts, the piston rod of the cylinder 65 drives the first piston 615 or the second piston 625 to move to the side of the cylinder 65 and abut against the end wall of the first inner cavity 6161 or the second inner cavity 6261, and finally the clamping block 6111 is separated from the clamping groove 6251.

[0074] The implementation principle of the forming roller and the sealing structure thereof in the embodiment of the application is as follows: an operator installs the forming sleeve 13 on the inner roller 12, then installs the sealing ring 17 in the annular groove 15, and then threadedly connects the end cover on the inner roller 12, thereby achieving the installation of the forming roller 1. The inflation device 2 inflates the hollow annular groove 171 of the sealing ring 17, so that the sealing ring 17 expands and abuts against the inner wall of the inner roller 12 to seal the inner roller 12.

[0075] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A seal structure for a forming roll, characterized by: The application relates to a sealing ring (17), an inflating device (2) and a repairing device (3), the circumferential inner wall of the sealing ring (17) is used for abutting against the circumferential outer wall of an inner roller (12), a hollow ring groove (171) is arranged in the sealing ring (17), the inflating device (2) is used for inflating the hollow ring groove (171), and the repairing device (3) is used for repairing cracks on the sealing ring (17) so that the hollow ring groove (171) in the sealing ring (17) is always kept in a closed state. The repairing device (3) comprises a driving member two (42), a repairing member (62) and a second rod (31), a third channel (173) communicating with the outside is arranged on the inner wall of the side of the hollow ring groove (171) facing the axis of the inner roller (12), the second rod (31) is slidably connected to the inner roller (12) along a sliding direction from the third channel (173) to the third channel (173), the driving member two (42) drives the second rod (31) to slide, a fourth channel (311) is arranged on the end face of one end of the second rod (31) close to the sealing ring (17), one end of the fourth channel (311) far from the sealing ring (17) is connected with the repairing member (62), the repairing member (62) is used for injecting repairing glue capable of repairing cracks on the sealing ring (17) into the fourth channel (311), when the second rod (31) moves to abut against the corresponding sealing ring (17), the third channel (173) communicates with the fourth channel (311). A second guide surface (312) is arranged on one end of the second rod (31) close to the third channel (173), the second guide surface (312) is gradually tapered from one end far from the third channel (173) to one end close to the third channel (173), and a second guide groove (1731) matched with the end of the second rod (31) is arranged on one end of the third channel (173) close to the second rod (31), when the second rod (31) moves to abut against the corresponding sealing ring (17), the second guide surface (312) is attached to the inner wall of the second guide groove (1731). The driving member two (42) comprises a driving rod (44) and a center rod (43), the center rod (43) is slidably connected to the inner roller (12) along the axis direction of the inner roller (12), and the second rod (31) is slidably connected to the inner roller (12) along a sliding direction perpendicular to the center rod (43). A first block (431) is arranged on the center rod (43), a first inclined surface (45) is arranged on the side of the second rod (31) facing the center rod (43), the distance between the first inclined surface (45) and the end sleeve (11) gradually decreases from one end of the first inclined surface (45) close to the center rod (43) to one end of the first inclined surface (45) far from the center rod (43), the first block (431) corresponds to the first inclined surface (45), and the first block (431) always abuts against the corresponding first inclined surface (45). The driving rod (44) is close to the end of the second rod (31) away from the fixed ring (14), the driving rod (44) is slidingly connected in the inner roller (12) along the sliding direction parallel to the second rod (31), the driving rod (44) is provided with a second inclined surface (442) on the side surface of the side of the center rod (43), the distance between the second inclined surface (442) and the fixed ring (14) gradually becomes close from the end of the center rod (43) to the end away from the center rod (43), the driving rod (44) is provided with a second spring (471), and the second spring (471) is used to drive the driving rod (44) so that the end of the center rod (43) close to the end sleeve (11) always abuts on the second inclined surface (442); The center rod (43) is provided with a first spring (461), the first spring (461) is used to drive the center rod (43) to always move towards the side of the driving rod (44), when no external force acts, the end of the driving rod (44) always extends out of the inner roller (12) and is located in the mounting area of the end sleeve, the end of the driving rod (44) extending out of the inner roller (12) is provided with a third inclined surface (443), the distance between the third inclined surface (443) and the center rod (43) gradually becomes small from the end close to the fixed ring (14) to the end away from the fixed ring (14), when the end sleeve is mounted on the inner roller (12), the driving rod (44) abuts on the inner wall of the end sleeve (11); The end of the length direction of the inner roller (12) is coaxially provided with the fixed ring (14), and the end sleeve (11) is threadedly connected to the other end of the inner roller (12); The inner roller (12) is coaxially provided with a transverse groove (46), the center rod (43) is slidingly connected in the transverse groove (46) along the axis direction parallel to the inner roller (12), the center rod (43) is located on the side of the end sleeve (11) close to the sealing ring (17), the transverse groove (46) is provided with a first spring (461), and the two ends of the first spring (461) are fixedly connected to the end of the transverse groove (46) away from the end sleeve (11) and the end of the center rod (43) away from the end sleeve (11) respectively.

2. The seal structure of a forming roll according to claim 1, characterized by: The inflator device (2) comprises a driving member one (41), an inflator (61) and a first rod (21), a first channel (172) is arranged on the inner wall of the side of the hollow annular groove (171) facing the axis of the inner roller (12) and is in communication with the outside, a first one-way valve (174) is arranged on the first channel (172), the first one-way valve (174) only allows outside gas to enter the hollow annular groove (171), the first rod (21) is slidably connected to the inner roller (12) along the sliding direction from the side close to the first channel (172) to the side away from the first channel (172), the driving member one (41) drives the first rod (21) to slide, a second channel (211) is arranged on the end face of the end of the first rod (21) close to the sealing ring (17), the end of the second channel (211) away from the sealing ring (17) is connected with the inflator (61), and the inflator (61) is used for inflating the second channel (211); when the first rod (21) moves to abut against the corresponding sealing ring (17), the first channel (172) is in communication with the second channel (211).

3. The seal structure for a forming roll according to claim 2, characterized by: The end of the first rod (21) close to the first channel (172) is provided with a first guide surface (212), the first guide surface (212) is gradually tapered from the end away from the first channel (172) to the end close to the first channel (172), and the end of the first channel (172) close to the first rod (21) is provided with a first guide groove (1721) matched with the end of the first rod (21); when the first rod (21) moves to abut against the corresponding sealing ring (17), the first guide surface (212) is attached to the inner wall of the first guide groove (1721).

4. The seal structure for a forming roll according to claim 3, characterized by: The driving member one (41) and the driving member two (42) are the same in structure and share a center rod (43), the center rod (43) is located between the first rod (21) and the second rod (31), the first rod (21) is slidably connected to the inner roller (12) along the sliding direction perpendicular to the center rod (43), and the side of the first rod (21) facing the center rod (43) is provided with a first inclined surface (45).

5. The seal structure for a forming roll of claim 1 wherein: Further comprising a detection device (5) for detecting the sealing performance of the sealing ring (17), the detection device (5) comprises two pressure sensors (51) arranged at the abutting positions of the sealing ring (17) and the fixed ring (14) and the end sleeve (11), respectively, and the pressure sensor (51) is used for detecting the acting force of the sealing ring (17) on the fixed ring (14) or the end sleeve (11).

6. The seal structure for a forming roll of claim 2 wherein: The device further comprises a receiving platform (6), the inflatable member (61) comprises a first receiving member (611), a third driving member (612), a first tube (613), a first connecting tube (614), a first piston (615) and an inflatable box (616) with a first inner cavity (6161), the first receiving member (611) is arranged on the inner roller (12), two ends of the first tube (613) are communicated with the second channel (211) and the first receiving member (611) respectively, the inflatable box (616) is arranged on the receiving platform (6), the first piston (615) is slidably connected to the first inner cavity (6161), the third driving member (612) drives the first piston (615) to move back and forth, the first piston (615) divides the first inner cavity (6161) into two first cavities which are not communicated with each other, two ends of the first connecting tube (614) are communicated with the first receiving member (611) and one of the first cavities respectively, the first inner cavity (6161) is provided with an air inlet (617) communicated with the outside, the air inlet (617) is provided with a second one-way valve (6171), the second one-way valve (6171) only allows outside air to enter the first inner cavity (6161), the air inlet (617) is arranged close to the communication position of the first connecting tube (614) and the first cavity, and the first receiving member (611) is used for receiving the first tube (613) and the first connecting tube (614) and making them communicated with each other; The repairing member (62) comprises the first receiving member (611), the third driving member (612), a second tube (623), a second connecting tube (624), a second piston (625) and a repairing box (626) with a second inner cavity (6261), the first receiving member (611) is arranged on the inner roller (12), two ends of the second tube (623) are communicated with the fourth channel (311) and the first receiving member (611) respectively, the repairing box (626) is arranged on the receiving platform (6), the second piston (625) is slidably connected to the second inner cavity (6261), the third driving member (612) drives the second piston (625) to move back and forth, the second piston (625) divides the second inner cavity (6261) into two second cavities which are not communicated with each other, two ends of the second connecting tube (624) are communicated with the first receiving member (611) and one of the second cavities respectively, the second inner cavity (6261) is provided with a liquid inlet (627) communicated with the outside, the liquid inlet (627) is provided with a third one-way valve (6271) only allowing outside repairing glue to enter the second inner cavity (6261), the liquid inlet (627) is arranged close to the communication position of the second connecting tube (624) and the second cavity, and the first receiving member (611) is used for receiving the second tube (623) and the second connecting tube (624) and making them communicated with each other.

7. The seal structure of a forming roll according to claim 6, characterized by: The first receiving member (611) comprises a support block (67) and two rotating blocks (66), one of which is fixed on the support block (67), the support block (67) is arranged on the ground and is used to support the corresponding rotating block (66), and the other rotating block (66) is coaxially fixedly connected to one end face of the inner roller (12), the two rotating blocks (66) are coaxially and rotatably connected together, four annular flow channels are coaxially arranged in the rotating block (66), the corresponding annular flow channels in the two rotating blocks (66) are communicated with each other, two first pipes (613) and two second pipes (623) correspond to the four annular flow channels respectively, one end of the first pipe (613) and the second pipe (623) away from the second channel (211) and the fourth channel (311) is communicated with the corresponding annular flow channel of the rotating block (66) fixed on the inner roller (12), two first connecting pipes (614) and two second connecting pipes (624) correspond to the four annular flow channels respectively, one end of the first connecting pipe (614) and the second connecting pipe (624) away from the first cavity and the second cavity is communicated with the corresponding annular flow channel of the rotating block (66) fixed on the support block (67).

8. The seal structure for a forming roll of claim 6 wherein: The driving member three (612) comprises a cylinder (65) and a rotating disc (64), the rotating disc (64) is rotatably connected to the receiving table (6), the cylinder (65) is arranged on the rotating disc (64), the inflation box (616) and the repair box (626) are arranged in sequence on the outer periphery of the cylinder (65), the piston rod of the cylinder (65) is provided with a clamping block (6111), the side surface of the first piston (615) and the second piston (625) facing the cylinder (65) is provided with a clamping groove (6251) matched with the clamping block (6111), the inflation box (616) and the repair box (626) are respectively provided with an opening (68) for the clamping block (6111) to penetrate, when the piston rod of the cylinder (65) is stretched out, the clamping block (6111) is clamped on the clamping groove (6251), when the piston rod of the cylinder (65) is retracted, the clamping block (6111) is separated from the clamping groove (6251).

9. A forming roll having the sealing structure of any one of claims 1 to 8, characterized in that: It comprises an end sleeve (11), an inner roller (12) and a forming sleeve (13) sleeved on the inner roller (12), a plurality of recessed holes (131) are arranged on the surface of the forming sleeve (13), a fixed ring (14) is fixedly sleeved on the inner roller (12), the end sleeve (11) is threadedly connected on the inner roller (12), the two end faces of the forming sleeve (13) abut on the fixed ring (14) and the end sleeve (11) respectively, and two annular grooves (15) for sleeving a sealing ring (17) are arranged on the outer wall of the inner roller (12).

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