Corrugated pipe opening flattening device

Abstract

The utility model discloses a corrugated pipe mouth flattening device, which belongs to the field of mouth flattening devices and comprises a bottom plate, an inverted L-shaped supporting plate is fixedly mounted on one side of the bottom plate, a placing pad and a supporting block are fixedly mounted at the top end of the bottom plate, the supporting block is positioned between the placing pad and a horizontal section of the supporting plate, a pressing component is arranged at the top end of the placing pad, and the pressing component is fixedly mounted on the bottom plate. A pressing block is arranged above the supporting block, a supporting plate is fixedly installed at the top end of the horizontal section of the supporting plate, a plurality of second air cylinders distributed in a linear mode are arranged on the side wall of the supporting plate, and the ends of piston shafts of the second air cylinders penetrate through the supporting plate in a sliding mode and are fixedly connected with the top end of the pressing block. According to the corrugated pipe flattening device, due to the arrangement of the multiple sets of flattening grooves and the supporting rollers, a worker can flatten corrugated pipes of different sizes conveniently, the device does not need to be replaced many times, and the working efficiency of the worker for machining the corrugated pipes can be improved.

Description

Technical Field

[0001] The utility model relates to the field of flat mouth devices, and more specifically, to a bellows flat mouth device. Background Art

[0002] Bellows refers to a tubular elastic sensitive element connected by foldable corrugated sheets along the folding and stretching direction. Bellows are widely used in instruments and meters. Their main purpose is to be used as measuring elements of pressure measuring instruments to convert pressure into displacement or force. Bellows have thinner walls and higher sensitivity. The measuring range is from tens of Pa to tens of MPa. Its open end is fixed, and the sealed end is in a free state. It uses auxiliary spiral springs or reeds to increase its elasticity. When working, it stretches along the length of the tube under the action of internal pressure, causing the movable end to produce a displacement that is related to the pressure. After the bellows are processed, a flat mouth tool is needed to flatten the two ends for subsequent connection.

[0003] The staff placed the flat mouth device on the pressing die, and then placed the bellows in the flat mouth device, and then pressed the die to achieve the flat mouth effect. However, some existing flat mouth devices have a single size, and the corresponding flat mouth device needs to be replaced according to the size of the bellows, which reduces the processing efficiency of the equipment. Therefore, in order to solve the above problem, we proposed a bellows flat mouth device. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a bellows flat mouth device, which adopts the following technical solutions:

[0005] The top of the support plate is provided with a screw rod, and the end of the screw rod is threadedly inserted into the support plate and the top of the support plate is fixedly connected with the support plate to form a vertical cam.

[0006] By adopting the above technical solution, when the equipment is used, the staff changes the size of the bellows and selects the flat groove corresponding to the opposite side of the pressing block and the supporting block. Then the staff places the bellows in the flat groove, and the side of the supporting block away from the placement pad is provided with a positioning component, which plays a role in positioning the flat port of the bellows. When the positioning of the bellows is completed, the pressing component and the placement pad cooperate to clamp and fix the bellows. Then, the positioning component is separated from the support block, and the screw of the same group is rotated by the handle. The screw drives the support roller of the same group to move to the inside of the bellows, which can support the bellows. It is helpful to avoid damage to the bellows when it is flat-ended. Subsequently, the pressing block can be driven downward by the second cylinder to fit the pressing block and the supporting block. The cooperation of the pressing block, the supporting block and the supporting roller can play the role of flat-ending the bellows. Through the cooperation of multiple sets of flat-end grooves, it is convenient for the equipment to flat-end corrugated pipes of different sizes without the need for multiple replacements, which is beneficial to improving the staff's efficiency in flat-ending the bellows. The pressing block and the supporting block are supported and stabilized by a stabilizing component, which is beneficial to maintaining the accuracy of the fit between the pressing block and the supporting block, and thus is beneficial to maintaining the quality of the bellows processing.

[0007] Furthermore, the pressing assembly includes a mounting plate arranged above the placement pad, a rubber pad is fixedly installed on the bottom end of the mounting plate, a first cylinder is fixedly installed on the top end of the horizontal section of the support plate, and the end of the piston shaft of the first cylinder slides through the support plate, and a buffer assembly is provided between the end of the piston shaft of the first cylinder and the top end of the mounting plate.

[0008] By adopting the above technical scheme, when the bellows is placed on the top of the placement pad, the first cylinder drives the mounting plate and the rubber pad to descend synchronously, and the rubber pad and the placement pad contact the bellows. The rubber pad and the placement pad are deformed to match the bellows under the action of the extrusion force, and play the role of clamping and fixing the bellows, which is beneficial to maintaining the stability of the flat end of the bellows. In addition, the buffer assembly is arranged between the first cylinder and the mounting plate, so that when the rubber pad and the bellows contact, it plays a buffering role, which helps to avoid damage to the bellows due to excessive pressing force, thereby achieving the effect of protecting the bellows.

[0009] Furthermore, the buffer assembly includes a support fixedly mounted on the end of the first cylinder piston shaft, a movable groove being provided at the bottom end of the support, a support rod being slidably mounted in the movable groove, and a second spring being fixedly connected between the top end of the support rod and the inner wall of the top end of the movable groove, and the bottom end of the support rod being fixedly connected to the top end of the mounting plate.

[0010] By adopting the above technical solution, when the rubber pad contacts the side wall of the bellows, the rubber pad pushes the support rod to slide in the movable groove through the mounting plate under the driving force of the first cylinder, and the support rod pushes the second spring to contract, and the second spring gives the support rod a rebound force. Through the action of the support rod and the second spring, a buffering effect is achieved.

[0011] Furthermore, two symmetrically distributed limiting blocks are fixedly mounted on the side wall at the top end of the support rod, and the inner wall of the movable groove is provided with limiting grooves matching the limiting blocks.

[0012] By adopting the above technical solution, when the support rod slides in the movable groove, the support rod slides in the limit groove with the limit block. The cooperation between the limit block and the limit groove is conducive to maintaining the sliding stability of the support rod and helps to prevent the support rod from leaving the movable groove.

[0013] Furthermore, the positioning assembly includes a baffle slidably installed on the side of the support block close to the horizontal section of the support plate, a connecting plate is fixedly installed on the top of the baffle, a telescopic rod is fixedly installed on the bottom end of the horizontal section of the support plate, and the end of the telescopic rod is fixedly connected to the top of the connecting plate, a card block is fixedly installed on the bottom end of the baffle, and a card slot matching the card block in the same group is opened on the top of the bottom plate.

[0014] By adopting the above technical solution, the connecting plate is driven by the telescopic rod to synchronously lower the baffle, so that one side of the baffle is fitted and slid with the side opposite to the support block. Through the setting of the baffle, the flat-end port required for locating the bellows is played, thereby achieving the effect of positioning the bellows. When the bottom end of the baffle is fitted with the top end of the base plate, the card block installed at the bottom end of the baffle is engaged with the card slot opened at the top end of the base plate. The cooperation of the card block and the card slot is conducive to maintaining the stability of the baffle during use.

[0015] Furthermore, the stabilizing component includes second support blocks fixedly installed on both sides of the supporting block, the tops of the two second support blocks are fixedly installed with stabilizing rods, and the side walls of the two stabilizing rods are sleeved with first springs, the tops of the pressing blocks are fixedly installed with first support blocks, and the tops of the two stabilizing rods slide through the first support blocks of the same group.

[0016] By adopting the above technical solution, when the second cylinder drives the pressing block to descend, the pressing block slides on the side wall of the stabilizing rod on the same side with the first support block, and the first support block pushes the first spring of the same group to contract. Through the cooperation of the stabilizing rod and the first spring, it plays a role of stabilizing and buffering, which is conducive to maintaining the accuracy of the fit between the pressing block and the support block.

[0017] Furthermore, the support block is fixedly installed with multiple support half rings distributed in a linear array on one side close to the placement pad, and the support half ring is aligned with the side opposite to the flat groove in the same group away from the placement pad. The bottom end of the support half ring and the base plate bracket are both provided with stabilizing blocks of corresponding sizes.

[0018] By adopting the above technical solution, the side wall of the support block plays a role in supporting and stabilizing the bellows through the setting of the supporting half ring, which helps to avoid the bellows between the support block and the placement pad from being damaged due to bending when the bellows is pressed.

[0019] Furthermore, a retaining ring is sleeved on the side wall of the support roller away from the support block, a positioning rod is fixedly installed on the side of the support roller away from the support block, and the positioning rod slides through the horizontal section of the support plate at one end away from the support block.

[0020] By adopting the above technical scheme, the end of the support roller is provided with a retaining ring, and the retaining ring contacts the opposite side of the support block, so as to play the role of positioning the support roller, and when the screw drives the support rollers of the same group to move, the support rollers slide synchronously with the positioning rods of the same group. The setting of the positioning rods helps to avoid the support rollers from subsequently rotating synchronously with the screws of the same group, and can play the role of balancing the support rollers, which is beneficial to improving the stability of the movement of the support rollers.

[0021] In summary, the utility model includes the following beneficial technical effects:

[0022] (1) In the present invention, by providing multiple sets of flat grooves and support rollers, it is convenient for workers to flatten corrugated pipes of different sizes without having to replace equipment multiple times, which is beneficial to improving the work efficiency of workers in processing corrugated pipes.

[0023] (2) In the utility model, the positioning component is provided to position the port of the bellows, thereby positioning the flat end of the bellows. The pressing component is provided to position and fix the bellows, which is beneficial to maintaining the stability of the flat end of the bellows.

[0024] (3) In the utility model, a buffer assembly is arranged between the first cylinder and the mounting plate. When the first cylinder drives the mounting plate and the rubber pad to move downward so that the rubber pad contacts the side wall of the bellows, the buffer assembly can play a buffering role, which helps to prevent the bellows from being damaged due to excessive pressing force, thereby achieving the effect of protecting the bellows. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a bellows flat mouth device from the first perspective;

[0026] Figure 2 It is a structural schematic diagram of the second viewing angle of the utility model;

[0027] Figure 3 For this utility model Figure 2 A magnified view of middle;

[0028] Figure 4 It is a cross-sectional view of a pillar in the utility model;

[0029] Figure 5 For this utility model Figure 4 Enlarged view of middle B;

[0030] Figure 6It is a display diagram of some structures in the utility model.

[0031] Description of the numbers in the figure:

[0032] 1. Bottom plate; 2. Placement pad; 3. Rubber pad; 4. Mounting plate; 5. Support rod; 6. Pillar; 7. First cylinder; 8. Support plate; 9. Second cylinder; 10. Support plate; 11. Press block; 12. Stabilizing rod; 13. First support block; 14. Support roller; 15. Screw rod; 16. First spring; 17. Second support block; 18. Support block; 19. Flat groove; 20. Support half ring; 21. Telescopic rod; 22. Connecting plate; 23. Baffle; 24. Second spring; 25. Movable groove. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] The following is combined with Figure 1-6 The utility model is described in further detail.

[0037] See also Figure 1-6A bellows flat mouth device comprises a bottom plate 1, a support plate 8 in an inverted "L" shape is fixedly installed on one side of the bottom plate 1, a placement pad 2 and a support block 18 are fixedly installed on the top of the bottom plate 1, the support block 18 is located between the placement pad 2 and the horizontal section of the support plate 8, a pressing block 11 is arranged above the support block 18, a support plate 10 is fixedly installed on the top of the horizontal section of the support plate 8, a plurality of second cylinders 9 distributed in a straight line are arranged on the side wall of the support plate 10, the piston shaft ends of the plurality of second cylinders 9 all slide through the support plate 8 and are fixedly connected to the top of the pressing block 11, a plurality of flat mouth grooves 19 of different sizes and distributed in a straight line array are correspondingly opened on the side opposite to the pressing block 11 and the support block 18, the support block 18 is close to the water level of the support plate 8 A positioning assembly is provided on one side of the flat section, and the positioning assembly includes a baffle 23 slidably installed on the side of the support block 18 close to the horizontal section of the support plate 8, a connecting plate 22 is fixedly installed on the top of the baffle 23, a telescopic rod 21 is fixedly installed on the bottom end of the horizontal section of the support plate 8, and the end of the telescopic rod 21 is fixedly connected to the top of the connecting plate 22, a card block is fixedly installed on the bottom end of the baffle 23, and a card slot matching the card block of the same group is opened on the top of the bottom plate 1. A plurality of support semi-rings 20 distributed in a linear array are fixedly installed on the side of the support block 18 close to the placement pad 2, and the support semi-ring 20 is aligned with the side opposite to the flat groove 19 of the same group away from the placement pad 2, and the bottom end of the support semi-ring 20 and the bottom plate 1 bracket are provided with stabilizing blocks of corresponding sizes.

[0038] When the device is in use, the connecting plate 22 is driven by the telescopic rod 21 to synchronously lower the baffle 23, so that one side of the baffle 23 is fitted and slid with the side opposite to the support block 18. When the bottom end of the baffle 23 is fitted with the top of the base plate 1, the card block installed at the bottom end of the baffle 23 is engaged with the card slot opened at the top of the base plate 1. The cooperation of the card block and the card slot is conducive to maintaining the stability of the use of the baffle 23. When the baffle 23 contacts the side opposite to the support tube, the staff replaces the size of the bellows and selects the flat groove 19 corresponding to the pressing block 11 and the side opposite to the support block 18. Then the staff places the bellows in the flat groove 19. Through the setting of the baffle 23, the flat port required for positioning the bellows is played, thereby achieving the effect of positioning the bellows.

[0039] A support roller 14 is provided between the same group of flat grooves 19, and a screw 15 is rotatably installed at one end of the support roller 14 away from the support block 18, and the screw 15 is threaded through the horizontal section of the support plate 8 at one end away from the support block 18 and is fixedly installed with a handle, a retaining ring is sleeved on the side wall of the end of the support roller 14 away from the support block 18, and a positioning rod is fixedly installed on the side of the support roller 14 away from the support block 18, and the positioning rod is slid through the horizontal section of the support plate 8 at one end away from the support block 18. When the port of the bellows is aligned, the staff rotates the screw 15 of the same group through the handle, and the screw 15 drives the support of the same group The support roller 14 moves to the inside of the corrugated tube to support the corrugated tube, which helps to avoid damage to the flat end of the corrugated tube. The end of the support roller 14 is provided with a retaining ring, and the retaining ring contacts the opposite side of the support block 18, which plays the role of positioning the support roller 14. When the screw 15 drives the support rollers 14 of the same group to move, the support rollers 14 slide synchronously with the positioning rods of the same group. The setting of the positioning rod helps to avoid the support rollers 14 and the screws 15 of the same group from rotating synchronously thereafter, and can balance the support rollers 14, which is beneficial to improving the stability of the movement of the support rollers 14.

[0040] A pressing assembly is provided at the top of the placement pad 2, and the pressing assembly includes a mounting plate 4 arranged above the placement pad 2, a rubber pad 3 is fixedly installed at the bottom end of the mounting plate 4, and a first cylinder 7 is fixedly installed at the top of the horizontal section of the support plate 8, and the end of the piston shaft of the first cylinder 7 slides through the support plate 8. When the alignment of the bellows is completed, the mounting plate 4 and the rubber pad 3 are driven to descend synchronously by the first cylinder 7, and the rubber pad 3 and the placement pad 2 are in contact with the bellows. The rubber pad 3 and the placement pad 2 are deformed to match the bellows under the action of the extrusion force, which plays a role in clamping and fixing the bellows, which is beneficial to maintaining the stability of the flat end of the bellows.

[0041] A buffer assembly is provided between the end of the piston shaft of the first cylinder 7 and the top of the mounting plate 4. The buffer assembly includes a support 6 fixedly mounted on the end of the piston shaft of the first cylinder 7. A movable groove 25 is provided at the bottom end of the support 6. A support rod 5 is slidably mounted in the movable groove 25. A second spring 24 is fixedly connected between the top of the support rod 5 and the inner wall of the top of the movable groove 25. The bottom end of the support rod 5 is fixedly connected to the top of the mounting plate 4. When the rubber pad 3 contacts the side wall of the bellows, the rubber pad 3 pushes the support rod 5 to slide in the movable groove 25 through the mounting plate 4 under the driving force of the first cylinder 7, and the support rod 5 pushes the second spring 24 to contract. The second spring 24 gives the support rod 5 a rebound force. Under the action of the support rod 5 and the second spring 24, a buffering effect is achieved.

[0042] Two symmetrically distributed limit blocks are fixedly installed on the side wall of the top end of the support rod 5, and a limit groove matching the limit block is opened on the inner wall of the movable groove 25. When the support rod 5 slides in the movable groove 25, the support rod 5 slides in the limit groove with the limit block. The cooperation between the limit block and the limit groove is conducive to maintaining the stability of the sliding of the support rod 5 and preventing the support rod 5 from leaving the movable groove 25.

[0043] A stabilizing component is provided between the pressing block 11 and the supporting block 18, and the stabilizing component includes second supporting blocks 17 fixedly installed on both sides of the supporting block 18, and the tops of the two second supporting blocks 17 are fixedly installed with stabilizing rods 12, and the side walls of the two stabilizing rods 12 are sleeved with first springs 16, and the tops of the pressing blocks 11 are fixedly installed with first supporting blocks 13, and the tops of the two stabilizing rods 12 slide through the first supporting blocks 13 of the same group, and the pressing block 11 is driven downward by the second cylinder 9 to make the pressing block 11 fit with the supporting block 18, and through the cooperation of the pressing block 11, the supporting block 18 and the supporting roller 14, that is, It can play the role of flattening the bellows. Through the cooperation of multiple groups of flattening grooves 19, it is convenient for the equipment to flatten bellows of different sizes without multiple replacements, which is beneficial to improving the staff's flattening efficiency of the bellows. When the second cylinder 9 drives the pressing block 11 to descend, the pressing block 11 slides on the side wall of the stabilizing rod 12 on the same side with the first support block 13, and the first support block 13 pushes the first spring 16 of the same group to contract. Through the cooperation of the stabilizing rod 12 and the first spring 16, it plays a role of stabilizing and buffering, which is beneficial to maintaining the accuracy of the fit between the pressing block 11 and the support block 18.

[0044] The implementation principle of the embodiment of the utility model is as follows: when the device is used, the staff changes the size of the bellows and selects the flat groove 19 corresponding to the opposite side of the pressing block 11 and the supporting block 18. Then the staff places the bellows in the flat groove 19, and the supporting block 18 is away from the side of the placement pad 2 through the setting of the positioning component, which plays the role of positioning the flat port of the bellows. When the positioning of the bellows is completed, the pressing component and the placement pad 2 cooperate to clamp and fix the bellows. Then, the positioning component is separated from the support block 18, and the screw 15 of the same group is rotated by the handle. The screw 15 drives the support roller 14 of the same group to move to the inside of the bellows, which can support the bellows. It helps to avoid damage to the bellows when it is flat-ended. Subsequently, the pressing block 11 can be driven downward by the second cylinder 9 to fit the pressing block 11 with the supporting block 18. The cooperation of the pressing block 11, the supporting block 18 and the supporting roller 14 can play the role of flat-ending the bellows. The cooperation of multiple sets of flat-end grooves 19 makes it convenient for the equipment to flat-end corrugated pipes of different sizes without multiple replacements, which is beneficial to improving the staff's flat-end efficiency of the bellows. The pressing block 11 and the supporting block 18 are supported and stabilized by a stabilizing component, which is beneficial to maintaining the accuracy of the fit between the pressing block 11 and the supporting block 18, and further beneficial to maintaining the quality of the bellows processing.

[0045] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A bellows flat mouth device, comprising a bottom plate (1), characterized in that: A support plate (8) in an inverted "L" shape is fixedly mounted on one side of the bottom plate (1); a placement pad (2) and a support block (18) are fixedly mounted on the top of the bottom plate (1); the support block (18) is located between the placement pad (2) and the horizontal section of the support plate (8); a pressing assembly is provided on the top of the placement pad (2); a pressing block (11) is provided above the support block (18); a support plate (10) is fixedly mounted on the top of the horizontal section of the support plate (8); a plurality of second cylinders (9) are arranged on the side wall of the support plate (10) in a linear distribution; the piston shaft ends of the plurality of second cylinders (9) all slide through the support plate (8) and are in contact with the pressing block (11). ) are fixedly connected to the top of the support plate (8); a plurality of flat grooves (19) of different sizes and distributed in a linear array are correspondingly provided on the opposite sides of the pressing block (11) and the supporting block (18); a positioning component is provided on the side of the supporting block (18) close to the horizontal section of the supporting plate (8); support rollers (14) are provided between the flat grooves (19) in the same group; a screw rod (15) is rotatably installed at one end of the supporting roller (14) away from the supporting block (18); and a handle is fixedly installed at one end of the screw rod (15) away from the supporting block (18) through a thread passing through the horizontal section of the supporting plate (8); and a stabilizing component is provided between the pressing block (11) and the supporting block (18).

2. The bellows flat mouth device according to claim 1, characterized in that: The pressing assembly comprises a mounting plate (4) arranged above the placement pad (2), a rubber pad (3) being fixedly mounted on the bottom end of the mounting plate (4), a first cylinder (7) being fixedly mounted on the top end of the horizontal section of the support plate (8), and the end of the piston shaft of the first cylinder (7) slidingly passes through the support plate (8), and a buffer assembly is provided between the end of the piston shaft of the first cylinder (7) and the top end of the mounting plate (4).

3. The bellows flat mouth device according to claim 2, characterized in that: The buffer assembly comprises a support (6) fixedly mounted on the end of the piston shaft of the first cylinder (7); a movable groove (25) is provided at the bottom end of the support (6); a support rod (5) is slidably mounted in the movable groove (25); a second spring (24) is fixedly connected between the top end of the support rod (5) and the inner wall of the top end of the movable groove (25); and the bottom end of the support rod (5) is fixedly connected to the top end of the mounting plate (4).

4. The bellows flat mouth device according to claim 3, characterized in that: Two symmetrically distributed limiting blocks are fixedly mounted on the top side wall of the support rod (5), and the inner wall of the movable groove (25) is provided with limiting grooves matching the limiting blocks.

5. The bellows flat mouth device according to claim 1, characterized in that: The positioning assembly comprises a baffle (23) slidably mounted on a side of the support block (18) close to the horizontal section of the support plate (8); a connecting plate (22) is fixedly mounted on the top of the baffle (23); a telescopic rod (21) is fixedly mounted on the bottom of the horizontal section of the support plate (8); the end of the telescopic rod (21) is fixedly connected to the top of the connecting plate (22); a clamping block is fixedly mounted on the bottom of the baffle (23); and a clamping groove matching the clamping block of the same group is provided at the top of the bottom plate (1).

6. The bellows flat mouth device according to claim 1, characterized in that: The stabilizing component comprises a second support block (17) fixedly mounted on both sides of the support block (18), a stabilizing rod (12) being fixedly mounted on the top of the two second support blocks (17), and a first spring (16) being sleeved on the side walls of the two stabilizing rods (12), a first support block (13) being fixedly mounted on the top of the pressing block (11), and the tops of the two stabilizing rods (12) slidingly penetrate the first support block (13) of the same group.

7. The bellows flat mouth device according to claim 1, characterized in that: A plurality of support half rings (20) distributed in a linear array are fixedly mounted on the side of the support block (18) close to the placement pad (2); the side of the support half ring (20) away from the placement pad (2) is aligned with the side opposite to the flat groove (19) of the same group; the bottom end of the support half ring (20) and the bottom plate (1) bracket are both provided with stabilizing blocks of corresponding sizes.

8. The bellows flat mouth device according to claim 1, characterized in that: The side wall of the support roller (14) at one end away from the support block (18) is sleeved with a retaining ring, and a positioning rod is fixedly installed on the side of the support roller (14) away from the support block (18), and the end of the positioning rod away from the support block (18) slides through the horizontal section of the support plate (8).

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