Shaping device with built-in fixing structure for papermaking mesh production

Abstract

The invention discloses a shaping device with a built-in fixing structure for papermaking mesh production, and relates to the technical field of papermaking mesh production, the shaping device comprises a shell, the inner side of the shell is fixedly connected with a partition plate, the left side of the shell is provided with a wire inlet and a wire outlet, and the left side of the partition plate is fixedly connected with a mounting plate; first electric push rods are fixedly connected to the upper side and the lower side of the mounting plate correspondingly, tension rollers are arranged at the outer ends of the first electric push rods, a locking unit is arranged on the inner side of the shell, a rotating rod is rotationally connected to the inner side of the shell, and a shaping cylinder is fixedly connected to the middle of the rotating rod. According to the shaping device with the built-in fixing structure for papermaking mesh production, the shaping cylinder, a wire inlet and a wire outlet are arranged, a mesh body is conveniently shaped, a plurality of limiting rollers are controlled through a second electric push rod to lock the broken mesh body, meanwhile, a plurality of locking rods and friction blocks are controlled to make contact with a limiting disc, the shaping cylinder stops rotating, and the mesh body is prevented from being broken. The net body is prevented from being damaged.

Description

Technical Field

[0001] This invention relates to the field of papermaking wire production technology, specifically to a shaping device for papermaking wire production with a built-in fixed structure. Background Technology

[0002] The papermaking wire, also known as the forming wire, is an infinitely circulating, ring-shaped fabric belt with a precise mesh structure on a paper machine. It is the core component of the "wet end" of the paper machine, and its core functions are to support, dewater, and form—that is, to filter and dewater the thin pulp suspension here, allowing the fibers to interweave and form a continuous wet paper web.

[0003] A search revealed a Chinese patent with application number "CN202220085825.8", which is a shaping device for papermaking wire production with a built-in fixed structure. The device includes a housing, a bidirectional motor, and a limiting seat. The bidirectional motor is fixedly installed at both ends inside the housing. A threaded cylinder is installed around the bidirectional lead screw. A second tensioning wheel is installed between the threaded cylinders outside the first tensioning wheel through a pressure sensor. A limiting seat is fixedly installed on the surface of both ends inside the housing on one side of the bidirectional lead screw. An electric push rod is fixedly installed on the top surface of the limiting seat. A locking block is fixedly installed on both sides of the bottom of the fixing seat, and a locking groove is provided inside the limiting seat at the bottom of the locking block.

[0004] When shaping the papermaking wire, heating components are needed to heat and shape the wire. If the wire suddenly breaks or becomes severely loose during high-speed heat setting, the electric push rod controls the locking block to engage in the slot and limit the wire. Although the roller motor stops at this time, the roller will still rotate due to inertia. The roller pulls the wire, which can easily damage the wire and affect the overall quality of the papermaking wire.

[0005] Therefore, the present invention proposes a shaping device for papermaking wire production with a built-in fixing structure to solve the above-mentioned problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a shaping device for papermaking wire production with a built-in fixing structure, which solves the problem of damage to the wire body caused by the rotation of the roller under inertia during the shaping and fixing of the papermaking wire.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A shaping device for papermaking wire production with a built-in fixed structure includes a housing. A partition is fixedly connected to the inner side of the housing. An inlet and an outlet are provided on the left side of the housing. A mounting plate is fixedly connected to the left side of the partition. An electric push rod is fixedly connected to both the upper and lower sides of the mounting plate. A tension roller is provided at the outer end of the electric push rod. A locking unit is provided on the inner side of the housing. A rotating rod is rotatably connected to the inner side of the housing. A shaping cylinder is fixedly connected to the middle of the rotating rod. Limiting plates are fixedly connected to both the front and rear sides of the shaping cylinder. The locking unit includes two fixed cylinders. The fixed cylinders are fixedly connected to the right side of the partition. A limiting component is provided on the inner side of the fixed cylinder. A fixing plate is fixedly connected to the bottom inner wall of the housing. A friction component is provided on the rear side of the fixing plate. The friction component is used to quickly stop the rotation of the shaping cylinder.

[0008] Preferably, the limiting component includes a connecting cylinder, which is fixedly connected to the inner side of the fixed cylinder. Multiple movable rods are provided on the outer side of the connecting cylinder. One end of each movable rod is fixedly connected to a movable frame. A limiting roller is provided on the inner side of the movable frame. A rectangular groove is formed at the other end of each movable rod. An inclined plate is rotatably connected to the inner side of each of the rectangular grooves. A rotating block is rotatably connected to the outer side of each inclined plate. A movable ring is fixedly connected to the outer side of each rotating block. The friction component includes a guide rail, which is fixedly connected to the rear side of the fixed plate. A guide block is slidably connected to the inner side of the guide rail. A friction ring is fixedly connected to the upper side of the guide block. Multiple locking rods are fixedly connected to the rear side of the friction ring. Multiple locking blocks are fixedly connected to the front side of the limiting plate. A circular hole is formed on the right side of the fixed cylinder.

[0009] Preferably, a groove is provided on the outer side of the fixed cylinder, a slide plate is slidably connected to the inner side of the groove, the slide plate is fixedly connected to the moving ring, a connecting plate is fixedly connected between the two slide plates, and an electric push rod is fixedly connected between the connecting plate and the partition.

[0010] Preferably, an L-shaped plate is fixedly connected to the front side of the connecting plate, a side plate is fixedly connected to the right side of the L-shaped plate, a linkage plate is rotatably connected to the upper side of the side plate, a connecting block is fixedly connected to the front side of the guide block, and the linkage plate and the connecting block are rotatably connected.

[0011] Preferably, a mounting box is fixedly connected to the rear side of the fixing plate, the side plate is slidably connected to the mounting box, friction blocks are fixedly connected to the outer ends of the plurality of locking rods, and contact blocks are fixedly connected to the outer ends of the friction blocks.

[0012] Preferably, a U-shaped frame is fixedly connected to the rear side of the guide rail, a lifting rod is provided on the outer side of the U-shaped frame, a mounting frame is fixedly connected to the upper end of the lifting rod, and a friction roller is provided on the inner side of the mounting frame.

[0013] Preferably, a base plate is fixedly connected to the lower end of the lifting rod, a screw is rotatably connected to the lower side of the guide rail, the screw is threadedly connected to the base plate, a gear is fixedly connected to the lower end of the screw, a movable plate is fixedly connected to the right side of the side plate, a control block is fixedly connected to the left side of the movable plate, and a gear plate that meshes with the gear is fixedly connected to the left side of the control block.

[0014] Preferably, the lifting rod is slidably connected to the U-shaped frame, the friction roller is located below the shaping cylinder, and the contact block is configured with an arc-shaped structure.

[0015] This invention provides a shaping device for papermaking wire production with a built-in fixing structure. Compared with the prior art, it has the following advantages: (1) The papermaking wire shaping device with built-in fixed structure is equipped with a shaping cylinder, an inlet and an outlet, which facilitates the shaping operation of the wire body. The electric push rod controls multiple limit rollers to lock the broken wire body. At the same time, it controls multiple locking rods, friction blocks and limit plates to contact each other, so that the shaping cylinder stops rotating and avoids damage to the wire body.

[0016] (2) The papermaking wire forming device with built-in fixed structure is equipped with guide rail, U-shaped frame, lifting rod, friction roller and screw. When the locking rod locks the forming cylinder, the friction roller rises to squeeze and limit the wire body, which further improves the stability of locking the broken wire body. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional cross-sectional view of the fixed cylinder in this invention; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a partial three-dimensional structural diagram of the locking unit in this invention; Figure 6 for Figure 5 Enlarged view of point B in the middle; Figure 7 This is a three-dimensional structural diagram of the locking rod in this invention; Figure 8 This is a three-dimensional structural diagram of the locking roller in this invention.

[0018] In the diagram: 1. Outer shell; 2. Inlet; 3. Outlet; 4. Mounting plate; 5. Electric push rod 1; 7. Tension roller; 8. Locking unit; 9. Partition plate; 10. Rotating rod; 11. Shaping cylinder; 12. Limiting plate; 13. Locking block; 81. Fixing cylinder; 82. Round hole; 83. Limiting assembly; 84. Fixing plate; 85. Mounting box; 86. Friction assembly; 87. Connecting cylinder; 88. Moving rod; 89. Moving frame; 810. Limiting roller; 811. Rectangular groove; 812. Inclined plate; 813. Rotating block; 814. Moving ring; 81 5. Slide plate; 816. Slide groove; 817. Connecting plate; 818. Electric push rod II; 819. L-shaped plate; 820. Side plate; 821. Guide rail; 822. Guide block; 823. Friction ring; 824. Connecting block; 825. Linkage plate; 826. Moving plate; 827. Locking rod; 828. Friction block; 829. Contact block; 830. U-shaped frame; 831. Lifting rod; 832. Mounting frame; 833. Friction roller; 834. Base plate; 835. Screw; 836. Gear; 837. Tooth plate; 838. Control block. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention provides the following technical solutions: Example 1 Please see Figure 1 - Figure 7A shaping device for papermaking wire production with a built-in fixed structure includes a housing 1. A partition 9 is fixedly connected to the inner side of the housing 1. An inlet 2 and an outlet 3 are opened on the left side of the housing 1. A mounting plate 4 is fixedly connected to the left side of the partition 9. Electric push rods 5 are fixedly connected to the upper and lower sides of the mounting plate 4. Tension rollers 7 are provided at the outer ends of the electric push rods 5. A locking unit 8 is provided on the inner side of the housing 1. A rotating rod 10 is rotatably connected to the inner side of the housing 1. A shaping cylinder 11 is fixedly connected to the middle of the rotating rod 10. Limiting plates 12 are fixedly connected to the front and rear sides of the shaping cylinder 11. The locking unit 8 includes two fixed cylinders 81, which are fixedly connected to the partition 9. On the right side of 9, a limiting component 83 is provided on the inner side of the fixed cylinder 81. A fixed plate 84 is fixedly connected to the bottom inner wall of the outer shell 1. A friction component 86 is provided on the rear side of the fixed plate 84. The friction component 86 is used to quickly stop the rotation of the shaping cylinder 11. Multiple electric heating rods are installed on the inner side of the shaping cylinder 11 to facilitate heating and shaping of the mesh. When shaping, the mesh first enters the outer shell 1 through the inlet 2. A through hole is opened on the outer side of the partition 9 to facilitate the mesh to pass through. A motor that drives the rotating rod 10 to rotate is fixedly connected to the rear side of the outer shell 1. The mesh passes around the shaping cylinder 11 and is finally discharged through the outlet 3. The motor drives the rotation of the shaping cylinder 11.

[0021] The limiting assembly 83 includes a connecting cylinder 87, which is fixedly connected to the inner side of the fixed cylinder 81. Multiple moving rods 88 are arranged on the outer side of the connecting cylinder 87. One end of each moving rod 88 is fixedly connected to a moving frame 89. A limiting roller 810 is arranged on the inner side of the moving frame 89. A rectangular groove 811 is formed at the other end of each moving rod 88. An inclined plate 812 is rotatably connected to the inner side of each rectangular groove 811. A rotating block 813 is rotatably connected to the outer side of the inclined plate 812. A moving ring 814 is fixedly connected to the outer side of the rotating block 813. A circular hole 82 is formed on the right side of the fixed cylinder 81. A sliding groove 816 is formed on the outer side of the fixed cylinder 81. A sliding plate 815 is slidably connected to the inner side of the sliding groove 816. The sliding plate 815 and the moving ring 814 are connected... A connecting plate 817 is fixedly connected between the two sliding plates 815. An electric push rod 818 is fixedly connected between the connecting plate 817 and the partition plate 9. When the net breaks, the electric push rod 818 drives the connecting plate 817 to move, the connecting plate 817 drives the sliding plate 815 to move, the sliding plate 815 drives the moving ring 814 to move, the moving ring 814 drives the inclined plate 812 to rotate, and the inclined plate 812 drives the moving rod 88 to move. Since the multiple inclined plates 812 are arranged in a circular array, the moving frames 89 on the multiple moving rods 88 move. The moving frames 89 drive the limiting rollers 810 to move. The multiple limiting rollers 810 move closer to the net, so that the net is quickly fixed and limited, avoiding further shaping and damage to the net.

[0022] The friction assembly 86 includes a guide rail 821, which is fixedly connected to the rear side of the fixed plate 84. A guide block 822 is slidably connected to the inner side of the guide rail 821. A friction ring 823 is fixedly connected to the upper side of the guide block 822. Multiple locking rods 827 are fixedly connected to the rear side of the friction ring 823. Multiple locking blocks 13 are fixedly connected to the front side of the limiting plate 12. An L-shaped plate 819 is fixedly connected to the front side of the connecting plate 817. A side plate 820 is fixedly connected to the right side of the L-shaped plate 819. A linkage plate 825 is rotatably connected to the upper side of the side plate 820. A connecting block 824 is fixedly connected to the front side of the guide block 822. The linkage plate 825 is rotatably connected to the connecting block 824. A mounting box 85 is fixedly connected to the rear side of the fixed plate 84. The side plate 820 is slidably connected to the mounting box 85. Multiple locks... A friction block 828 is fixedly connected to the outer end of the stop rod 827, and a contact block 829 is fixedly connected to the outer end of the friction block 828. When the limiting roller 810 fixes the net body, the connecting plate 817 drives the L-shaped plate 819 to move, the L-shaped plate 819 drives the side plate 820 to move to the left, the side plate 820 drives the linkage plate 825 to rotate, the linkage plate 825 drives the guide block 822 to move backward, the guide block 822 drives the friction ring 823 to move backward, the friction ring 823 drives the locking rod 827 to move backward, and the locking rod 827 drives the friction block 828 to move. Under the action of the locking block 13, the limiting plate 12 is initially decelerated, and the limiting plate 12 is fixed and limited again by the friction block 828, the contact block 829 and the limiting plate 12, so that the shaping cylinder 11 stops rotating quickly and avoids damage to the net body.

[0023] Example 2 Based on Example 1, such as Figure 8 As shown, a shaping device for papermaking wire production with a built-in fixed structure includes a housing 1. A partition 9 is fixedly connected to the inner side of the housing 1. An inlet 2 and an outlet 3 are opened on the left side of the housing 1. A mounting plate 4 is fixedly connected to the left side of the partition 9. Electric push rods 5 are fixedly connected to the upper and lower sides of the mounting plate 4. Tension rollers 7 are provided at the outer ends of the electric push rods 5. A locking unit 8 is provided on the inner side of the housing 1. A rotating rod 10 is rotatably connected to the inner side of the housing 1. A shaping cylinder 11 is fixedly connected to the middle of the rotating rod 10. Limiting plates 12 are fixedly connected to the front and rear sides of the shaping cylinder 11. The locking unit 8 includes two fixed cylinders 81, which are fixedly connected to the partition 9. On the right side of plate 9, a limiting component 83 is provided on the inner side of the fixing cylinder 81. A fixing plate 84 is fixedly connected to the bottom inner wall of the outer shell 1. A friction component 86 is provided on the rear side of the fixing plate 84. The friction component 86 is used to quickly stop the rotation of the shaping cylinder 11. Multiple electric heating rods are installed on the inner side of the shaping cylinder 11 to facilitate heating and shaping of the mesh. When shaping, the mesh first enters the outer shell 1 through the inlet 2. The outer side of the partition plate 9 has through holes to facilitate the mesh to pass through. A motor that drives the rotating rod 10 to rotate is fixedly connected to the rear side of the outer shell 1. The mesh passes around the shaping cylinder 11 and is finally discharged through the outlet 3. The motor drives the rotation of the shaping cylinder 11.

[0024] A U-shaped frame 830 is fixedly connected to the rear side of the guide rail 821. A lifting rod 831 is provided on the outer side of the U-shaped frame 830. A mounting frame 832 is fixedly connected to the upper end of the lifting rod 831. A friction roller 833 is provided on the inner side of the mounting frame 832. A base plate 834 is fixedly connected to the lower end of the lifting rod 831. A screw 835 is rotatably connected to the lower side of the guide rail 821. The screw 835 is threadedly connected to the base plate 834. A gear 836 is fixedly connected to the lower end of the screw 835. A movable plate 826 is fixedly connected to the right side of the side plate 820. A control block 838 is fixedly connected to the left side of the movable plate 826. A gear plate 837 that meshes with the gear 836 is fixedly connected to the left side of the control block 838. The lifting rod 831 and the U-shaped frame 830... The sliding connection is used, with the friction roller 833 located below the shaping cylinder 11. The contact block 829 has an arc-shaped structure. When the shaping cylinder 11 is fixed, the side plate 820 drives the moving plate 826 to move, the moving plate 826 drives the control block 838 to move to the left, the control block 838 drives the toothed plate 837 to move, the toothed plate 837 drives the gear 836 to move, the gear 836 drives the screw 835 to rotate, the screw 835 drives the bottom plate 834 to rise, the bottom plate 834 drives the lifting rod 831 to rise, the lifting rod 831 drives the mounting frame 832 to rise, and the mounting frame 832 drives the friction roller 833 to rise, so that the friction roller 833 squeezes the net body (on the shaping cylinder 11), further fixing the net body and improving the stability of the net body fixing.

[0025] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0026] Working principle: In use, the net body first enters the outer casing 1 through the inlet 2, passes around the shaping cylinder 11, and then exits through the outlet 3. The shaping cylinder 11 shapes the net body. During the shaping process, the motor controls the rotation of the shaping cylinder 11. When the net body breaks, the electric push rod 818 drives the connecting plate 817 to move to the left. The connecting plate 817 drives the sliding plate 815 to move to the left. The sliding plate 815 drives the moving ring 814 to move to the left. The moving ring 814 drives the inclined plate 812 to rotate. The inclined plate 812 drives the moving rod 88 to move. The moving rod 88 drives the moving frame 89 to move, so that multiple limiting rollers 810 initially fix the net body. At the same time, the connecting plate 817 drives the L-shaped plate 819 to move. 19 drives the side plate 820 to move to the left, the side plate 820 drives the linkage plate 825 to rotate, the linkage plate 825 drives the guide block 822 to move backward, the guide block 822 drives the friction ring 823 to move backward, the friction ring 823 and the contact block 829 both contact the limiting plate 12, so that the shaping cylinder 11 is quickly limited and the shaping cylinder 11 is quickly fixed. At the same time, the side plate 820 drives the moving plate 826 to move, the moving plate 826 drives the toothed plate 837 on the control block 838 to move, the toothed plate 837 drives the gear 836 to rotate. Under the action of the screw 835, the base plate 834, the lifting rod 831 and the mounting frame 832, the friction roller 833 rises, so that the friction roller 833 fixes the net body again, further improving the stability of the net body fixation.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A setting device for producing a papermaking wire with built-in fixing structure, comprising a housing (1), characterized in that: A partition plate (9) is fixedly connected to the inner side of the outer shell (1). An inlet (2) and an outlet (3) are provided on the left side of the outer shell (1). A mounting plate (4) is fixedly connected to the left side of the partition plate (9). Electric push rods (5) are fixedly connected to the upper and lower sides of the mounting plate (4). A tension roller (7) is provided at the outer end of the electric push rod (5). A locking unit (8) is provided on the inner side of the outer shell (1). A rotating rod (10) is rotatably connected to the inner side of the outer shell (1). A middle part of the rotating rod (10) is fixedly connected to... The shaping cylinder (11) has a limiting plate (12) fixedly connected to both the front and rear sides. The locking unit (8) includes two fixing cylinders (81). The fixing cylinders (81) are fixedly connected to the right side of the partition (9). A limiting component (83) is provided on the inner side of the fixing cylinders (81). A fixing plate (84) is fixedly connected to the bottom inner wall of the outer shell (1). A friction component (86) is provided on the rear side of the fixing plate (84). The friction component (86) is used to quickly stop the rotation of the shaping cylinder (11).

2. The setting device for producing a papermaking wire with built-in fixing structure according to claim 1, characterized in that: The limiting component (83) includes a connecting cylinder (87), which is fixedly connected to the inner side of the fixed cylinder (81). A plurality of moving rods (88) are provided on the outer side of the connecting cylinder (87). A moving frame (89) is fixedly connected to one end of the moving rod (88). A limiting roller (810) is provided on the inner side of the moving frame (89). A rectangular groove (811) is opened on the other end of the moving rod (88). An inclined plate (812) is rotatably connected to the inner side of each of the plurality of rectangular grooves (811). A rotating block (813) is rotatably connected to the outer side of the inclined plate (812). A movable ring (814) is fixedly connected to the outer side of the rotating block (813). The friction assembly (86) includes a guide rail (821). The guide rail (821) is fixedly connected to the rear side of the fixed plate (84). A guide block (822) is slidably connected to the inner side of the guide rail (821). A friction ring (823) is fixedly connected to the upper side of the guide block (822). A plurality of locking rods (827) are fixedly connected to the rear side of the friction ring (823). A plurality of locking blocks (13) are fixedly connected to the front side of the limiting plate (12). A round hole (82) is opened on the right side of the fixed cylinder (81).

3. The setting device for producing a papermaking wire with built-in fixing structure according to claim 2, characterized in that: The outer side of the fixed cylinder (81) is provided with a sliding groove (816), and the inner side of the sliding groove (816) is slidably connected with a sliding plate (815). The sliding plate (815) is fixedly connected to the moving ring (814), and a connecting plate (817) is fixedly connected between the two sliding plates (815). An electric push rod (818) is fixedly connected between the connecting plate (817) and the partition (9).

4. The shaping device for papermaking wire production with a built-in fixing structure according to claim 3, characterized in that: An L-shaped plate (819) is fixedly connected to the front side of the connecting plate (817), a side plate (820) is fixedly connected to the right side of the L-shaped plate (819), a linkage plate (825) is rotatably connected to the upper side of the side plate (820), a connecting block (824) is fixedly connected to the front side of the guide block (822), and the linkage plate (825) and the connecting block (824) are rotatably connected.

5. A shaping device for papermaking wire production with a built-in fixing structure according to claim 4, characterized in that: The mounting box (85) is fixedly connected to the rear side of the fixing plate (84), the side plate (820) is slidably connected to the mounting box (85), the outer ends of the plurality of locking rods (827) are fixedly connected to friction blocks (828), and the outer ends of the friction blocks (828) are fixedly connected to contact blocks (829).

6. The shaping device for papermaking wire production with a built-in fixing structure according to claim 5, characterized in that: A U-shaped frame (830) is fixedly connected to the rear side of the guide rail (821). A lifting rod (831) is provided on the outer side of the U-shaped frame (830). A mounting frame (832) is fixedly connected to the upper end of the lifting rod (831). A friction roller (833) is provided on the inner side of the mounting frame (832).

7. A shaping device for papermaking wire production with a built-in fixing structure according to claim 6, characterized in that: The lower end of the lifting rod (831) is fixedly connected to a base plate (834), and the lower side of the guide rail (821) is rotatably connected to a screw (835). The screw (835) is threadedly connected to the base plate (834), and the lower end of the screw (835) is fixedly connected to a gear (836). The right side of the side plate (820) is fixedly connected to a moving plate (826), and the left side of the moving plate (826) is fixedly connected to a control block (838). The left side of the control block (838) is fixedly connected to a toothed plate (837) that meshes with the gear (836).

8. A shaping device for papermaking wire production with a built-in fixing structure according to claim 7, characterized in that: The lifting rod (831) is slidably connected to the U-shaped frame (830), the friction roller (833) is located below the shaping cylinder (11), and the contact block (829) is set with an arc-shaped structure.

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