Degradable sugarcane pulp tableware forming machine

Abstract

The invention discloses a degradable sugarcane pulp tableware forming machine which comprises a workbench, a forming mechanism is arranged on the workbench, the forming mechanism comprises a pressing base, a mounting frame, a motor, a transmission wheel, a transmission chain, a supporting frame, a hydraulic cylinder and a pressing plate, the pressing base is arranged on the workbench, the mounting frame is arranged on the workbench, and the motor is arranged on the supporting frame. The motor is arranged on one side of the installation frame, the two sets of transmission wheels are installed on the motor and the installation frame respectively, the transmission chain is arranged on the transmission wheels, the supporting frame is arranged on the transmission chain, the hydraulic cylinder is arranged on the supporting frame, the pressing plate is arranged at the piston end of the hydraulic cylinder, and the bunching mechanism is arranged on one side of the motor. The bunching mechanism comprises a bunching sleeve, an inclined sliding block, a spring, a bunching clamp, an inclined plane arc-shaped sleeve, an inclined plane arc-shaped block, a connecting rod and a threaded sleeve. The technical problems that in the background technology, the height of the forming mechanism is difficult to adjust accurately, and effective cable fixing measures are lacked are solved.

Description

Technical Field

[0001] The invention relates to the technical field of degradable sugarcane pulp tableware, and more particularly to a degradable sugarcane pulp tableware forming machine. Background Art

[0002] In the existing technology, a biodegradable sugarcane pulp tableware forming machine refers to a mechanical device used to form base paper processed from sugarcane pulp into biodegradable tableware. Existing forming machines often have difficulty in accurately adjusting the height of the forming mechanism. Since different types of tableware require different forming heights, this limitation makes it particularly inconvenient for operators to switch products. The height adjustment of the forming mechanism is crucial to ensuring the forming quality and production efficiency of the tableware, and the existing equipment fails to provide sufficient flexibility and convenience in this regard.

[0003] Existing molding machines are usually equipped with driving components such as motors or cylinders, and there are certain problems with the cable fixing methods of these components. During the operation of the machine, the cables may become loose due to vibration or other factors, resulting in equipment failure or production interruption. The existing technology lacks effective cable fixing measures, which not only affects the stable operation of the equipment, but also brings inconvenience to maintenance work;

[0004] During the molding process, the base paper needs to be limited on all sides to ensure that the pulp is evenly distributed in the molding mold. However, the existing molding machines are not convenient enough in adjusting the limit range. The limit range of the base paper needs to be adjusted according to different tableware sizes and shapes, and the existing equipment often requires cumbersome manual adjustment process, which is not only time-consuming but also prone to errors, affecting production efficiency and product quality. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the problems existing in the prior art, the present invention provides a biodegradable sugarcane pulp tableware forming machine to solve the technical problems mentioned in the background technology that it is difficult to accurately adjust the height of the forming mechanism and there is a lack of effective cable fixing measures.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a biodegradable sugarcane pulp tableware forming machine, comprising a workbench, a forming mechanism is arranged on the workbench, the forming mechanism comprises a pressure seat, a mounting frame, a motor, a transmission wheel, a transmission chain, a support frame, a hydraulic cylinder and a pressure plate, the pressure seat is arranged on the workbench, the mounting frame is arranged on the workbench, the motor is arranged on one side of the mounting frame, the transmission wheel is arranged with two groups respectively installed on the motor and the mounting frame, the transmission chain is arranged on the transmission wheel, the support frame is arranged on the transmission chain, the pressure hydraulic cylinder is arranged on the support frame, On the support frame, the pressure plate is arranged at the piston end of the hydraulic cylinder, and a wiring harness mechanism is arranged on one side of the motor. The wiring harness mechanism includes a wiring harness sleeve, an inclined sliding block, a spring, a wiring harness clamp, an inclined arc sleeve, an inclined arc block, a connecting rod and a threaded sleeve. The wiring harness sleeve is arranged on a workbench, the inclined sliding block is arranged in the wiring harness sleeve, the spring is arranged on the inclined sliding block, the wiring harness clamp is arranged on the spring, the inclined arc sleeve is fixedly arranged on the bottom surface of the inclined sliding block, the inclined arc block is arranged in the inclined arc sleeve, the connecting rod is arranged on the inclined arc block, and the threaded sleeve is arranged on the outer wall of the wiring harness sleeve.

[0009] The present invention is further configured such that the two groups of transmission wheels are respectively fixedly mounted on the output end of the motor and rotatably mounted on the top of the mounting frame, and the transmission chain is sleeved on the two groups of transmission wheels, so as to smoothly adjust the height of the forming mechanism to meet the forming requirements of different tableware.

[0010] The present invention is further configured such that the support frame is detachably mounted on one side of the transmission chain, and both sides of the support frame are slidably connected to the mounting frame, thereby facilitating maintenance and replacement of the equipment.

[0011] The present invention is further configured such that an inclined slide groove is provided in the cable harness sleeve, and the inclined slide grooves are provided in multiple groups and are mirror-imaged in the cable harness sleeve, and the inclined sliding blocks are provided in multiple groups and are relatively slidably installed in the multiple groups of inclined slide grooves, thereby improving the efficiency and convenience of cable fixing.

[0012] The present invention is further configured such that a control sleeve is rotatably provided on the outer wall of the cable sleeve, and the inner wall of the control sleeve is threadedly connected to the threaded sleeve, so that the distance between the cable clamps can be adjusted to achieve fixing and loosening of the cables.

[0013] The present invention is further configured such that a clearance groove is opened on the cable harness sleeve, and the clearance grooves are provided in multiple groups. The connecting rods are provided in multiple groups and are slidably installed in the clearance grooves. Both ends of the multiple groups of connecting rods are respectively connected to the inclined arc blocks and the threaded sleeves, so as to realize precise control of the cable binding force.

[0014] The present invention is further configured such that a limiting mechanism is arranged on the workbench, and the limiting mechanism includes a mounting seat, a cylinder, a sliding seat, a slide bar, a limiting plate and a fixing hole; the mounting seat is fixedly mounted on the workbench, the cylinder is mounted on the mounting seat, the sliding seat is slidably mounted on the workbench, the slide bar is slidably mounted on the sliding seat, the limiting plate is fixedly mounted on the slide bar, a plurality of fixing holes are arranged and distributed on the limiting plate, and the limiting plate is installed by bolts and threaded cooperation with the fixing holes to achieve precise limiting of the base paper around.

[0015] The present invention is further configured such that a protective pad is provided on the inner side of the limiting plate, and the limiting mechanism is provided with multiple groups distributed in a ring shape on the workbench. The ring distribution of the multiple groups of limiting mechanisms and the adjustability on the workbench improve the molding accuracy and production efficiency.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides a biodegradable sugarcane pulp tableware forming machine, which has the following beneficial effects:

[0018] 1. Beneficial effects of the forming mechanism: The design of the forming mechanism allows the height of the pressing plate to be precisely adjusted through the motor and transmission system to meet the forming requirements of different tableware. The application of the hydraulic cylinder provides sufficient pressure to ensure that the base paper can be effectively folded inward. In addition, the detachable design of the support frame makes the forming mechanism more flexible and easy to maintain and replace.

[0019] 2. Beneficial effects of the cable harness mechanism: The cable harness mechanism realizes the rapid fixing and loosening of the cable through the sliding mechanism of the inclined slider and the inclined arc sleeve, as well as the cooperation of the control sleeve and the threaded sleeve. This design not only improves the efficiency of cable fixing, but also reduces the complexity of operation and ensures the stability and safety of the cable.

[0020] 3. Beneficial effects of the limiting mechanism: The limiting mechanism can accurately limit the four sides of the base paper through the coordinated action of the cylinder and the sliding seat, as well as the adjustment of the limiting plate and the fixed hole. This design makes the position of the base paper more stable during the molding process, reduces the molding error, and improves the quality and consistency of the tableware. At the same time, the pad design of the limiting plate further protects the base paper and prevents damage during the molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a degradable sugarcane pulp tableware forming machine in the present invention;

[0022] Figure 2 It is a structural schematic diagram of the forming mechanism in the present invention;

[0023] Figure 3 It is a schematic diagram of the internal structure of the wire harness mechanism in the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the inclined arc block in the wire harness mechanism of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the limiting mechanism in the present invention.

[0026] In the figure: 1. workbench; 2. pressure seat; 3. mounting frame; 4. motor; 5. transmission wheel; 6. transmission chain; 7. support frame; 8. hydraulic cylinder; 9. pressure plate; 10. cable harness; 11. inclined sliding block; 12. spring; 13. cable harness clamp; 14. inclined arc sleeve; 15. inclined arc block; 16. connecting rod; 17. threaded sleeve; 18. inclined slide groove; 19. control sleeve; 20. clearance groove; 21. mounting seat; 22. cylinder; 23. sliding seat; 24. slide bar; 25. limit plate; 26. fixing hole; 27. protective pad. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0030] See also Figure 1-5A biodegradable sugarcane pulp tableware forming machine comprises a workbench 1, a forming mechanism is arranged on the workbench 1, the forming mechanism comprises a pressing seat 2, a mounting frame 3, a motor 4, a transmission wheel 5, a transmission chain 6, a support frame 7, a hydraulic cylinder 8 and a pressing plate 9, the pressing seat 2 is arranged on the workbench 1, the mounting frame 3 is arranged on the workbench 1, the motor 4 is arranged on one side of the mounting frame 3, the transmission wheel 5 is provided with two groups respectively installed on the motor 4 and the mounting frame 3, the transmission chain 6 is arranged on the transmission wheel 5, the support frame 7 is arranged on the transmission chain 6, the hydraulic cylinder 8 is arranged on the support frame 7, the pressing plate 9 is arranged on the piston end of the hydraulic cylinder 8, the motor A cable harness mechanism is provided on one side, which includes a cable harness sleeve 10, an inclined slider 11, a spring 12, a cable harness clamp 13, an inclined arc sleeve 14, an inclined arc block 15, a connecting rod 16 and a threaded sleeve 17. The cable harness sleeve 10 is provided on the workbench 1, the inclined slider 11 is provided in the cable harness sleeve 10, the spring 12 is provided on the inclined slider 11, the cable harness clamp 13 is provided on the spring 12, the inclined arc sleeve 14 is fixedly provided on the bottom surface of the inclined slider 11, the inclined arc block 15 is provided in the inclined arc sleeve 14, the connecting rod 16 is provided on the inclined arc block 15, and the threaded sleeve 17 is provided on the outer wall of the cable harness sleeve 10.

[0031] Two sets of transmission wheels 5 are respectively fixedly mounted on the output end of the motor 4 and rotatably mounted on the top of the mounting frame 3. The transmission chain 6 is sleeved on the two sets of transmission wheels 5. The power of the motor 4 can be transmitted to the support frame 7 through the transmission wheel 5 and the transmission chain 6, so as to realize the sliding of the support frame 7 on the mounting frame 3. This transmission method is simple and reliable, and can smoothly adjust the height of the forming mechanism to meet the forming requirements of different tableware.

[0032] The support frame 7 is detachably mounted on one side of the transmission chain 6, and both sides of the support frame are slidably connected to the mounting frame 3. The detachable design of the support frame 7 facilitates the maintenance and replacement of the equipment, and the sliding connection provides the support frame 7 with freedom of movement on the mounting frame 3, so that the molding mechanism can adjust its position more flexibly.

[0033] An inclined slide groove 18 is provided in the cable harness 10, and multiple groups of inclined slide grooves 18 are arranged and are mirrored in the cable harness 10. Multiple groups of inclined sliding blocks 11 are provided and are relatively slidably installed in the multiple groups of inclined slide grooves 18. The design of the inclined sliding blocks 11 and the inclined slide grooves 18 allows the inclined sliding blocks 11 to slide along the inclined surface. This mechanism improves the efficiency and convenience of cable fixing.

[0034] A control sleeve 19 is rotatably provided on the outer wall of the cable sleeve 10, and the inner wall of the control sleeve 19 is threadedly connected to the threaded sleeve 17. By rotating the control sleeve 19 and the threaded sleeve 17, the distance between the cable clamps 13 can be adjusted to achieve the fixing and loosening of the cable.

[0035] The cable harness sleeve 10 is provided with a plurality of clearance grooves 20, and a plurality of connecting rods 16 are provided and slidably installed in the clearance grooves 20. The two ends of the plurality of connecting rods 16 are respectively connected to the inclined arc block 15 and the threaded sleeve 17. The design of the connecting rod 16 and the clearance grooves 20 enables the inclined arc block 15 and the threaded sleeve 17 to adjust the position of the inclined slider 11 through the sliding of the connecting rod 16, thereby realizing precise control of the cable binding force.

[0036] A limiting mechanism is arranged on the workbench 1, and the limiting mechanism comprises a mounting seat 21, a cylinder 22, a sliding seat 23, a slide bar 24, a limiting plate 25 and a fixing hole 26. The mounting seat 21 is fixedly mounted on the workbench 1, the cylinder 22 is mounted on the mounting seat 21, the sliding seat 23 is slidably mounted on the workbench 1, the slide bar 24 is slidably mounted on the sliding seat 23, the limiting plate 25 is fixedly mounted on the slide bar 24, and a plurality of fixing holes 26 are arranged and distributed on the limiting plate 25. The limiting plate 25 is installed by bolts threadedly fitting with the fixing holes 26. The sliding seat 23 and the slide bar 24 are pushed by the cylinder 22, and then the limiting plate 25 is moved, so as to realize precise limiting of the base paper around.

[0037] A protective pad 27 is provided on the inner side of the limiting plate 25. The limiting mechanism is provided with multiple groups distributed in a ring shape on the workbench 1. The setting of the protective pad 27 protects the base paper and prevents it from being damaged during the forming process. The ring distribution of multiple groups of limiting mechanisms and the adjustability on the workbench 1 improve the forming accuracy and production efficiency.

[0038] In this embodiment, firstly, the pulp tableware base paper is placed on the pressing seat 2, an external buffer device is installed under the pressing seat 2, and the motor 4 is started to rotate its output end, and the transmission wheel 5 is driven to rotate by the output end of the motor 4, and the transmission chain 6 is driven by the transmission wheel 5 to transmit along the two sets of transmission wheels 5, thereby driving the support frame 7 to slide along the mounting frame 3, and the height of the pressing plate 9 is adjusted, and then the hydraulic cylinder 8 is started so that its piston end pushes the pressing plate 9 to press down. When the pressing plate 9 is pressed down onto the base paper, the pressing seat 2 is lowered by the installed external buffer device, and the base paper is blocked by the limit plate 25 on all sides to be folded inwardly. When the cable needs to be bound and fixed, the cable sleeve 10 is installed on the workbench 1, and then the cable is passed through the The control sleeve 19 is then rotated so that the control sleeve 19 is threadedly matched with the threaded sleeve 17, so that the threaded sleeve 17 moves, and the connecting rod 16 drives the inclined arc block 15 to move. The inclined arc block 15 moves while pushing the inclined arc sleeve 14. The inclined arc sleeve 14 pushes the inclined sliding block 11 to slide along the inclined sliding groove 18. The inclined sliding block 11 slides obliquely while driving the inclined arc sleeve 14 to slide along the inclined arc block 15. Multiple groups of inclined sliding blocks 11 slide inward while reducing the distance between multiple groups of cable clamps 13. When the multiple groups of cable clamps 13 are attached to the outer wall of the cable, the control sleeve 19 is tightened so that the cable clamp 13 tightens and binds the outer wall of the cable, thereby completing the fixation of the cable.

[0039] See also Figure 5 As an implementation method of a limiting mechanism for a biodegradable sugarcane pulp tableware forming machine: a limiting mechanism is arranged on a workbench 1, and the limiting mechanism includes a mounting seat 21, a cylinder 22, a sliding seat 23, a slide bar 24, a limiting plate 25 and a fixing hole 26. The mounting seat 21 is fixedly mounted on the workbench 1, the cylinder 22 is mounted on the mounting seat 21, the sliding seat 23 is slidably mounted on the workbench 1, the slide bar 24 is slidably mounted on the sliding seat 23, the limiting plate 25 is fixedly mounted on the slide bar 24, and a plurality of fixing holes 26 are provided and distributed on the limiting plate 25. The limiting plate 25 is installed by threaded cooperation of bolts and the fixing holes 26.

[0040] A protective pad 27 is provided inside the limiting plate 25 , and a plurality of limiting mechanisms are provided and distributed in a ring shape on the workbench 1 .

[0041] More specifically, the control cylinder 22 pushes the sliding seat 23 to slide, and the limiting plate 25 is pushed forward by the sliding seat 23. The limiting plate 25 is pushed simultaneously by multiple sets of limiting mechanisms to limit the four sides of the base paper when the base paper is formed. The limiting plate 25 is slid along the sliding seat 23 through the sliding bar 24, and the limiting range between the multiple sets of limiting mechanisms can be adjusted. Then, the limiting plate 25 is fixed by the threaded cooperation of the bolts and the fixing holes 26.

[0042] In summary, when the overall equipment is in use or running: first, place the pulp tableware base paper on the pressure seat 2, install an external buffer device under the pressure seat 2, start the motor 4 to rotate its output end, drive the transmission wheel 5 to rotate through the output end of the motor 4, and drive the transmission chain 6 to transmit along the two sets of transmission wheels 5 through the transmission wheel 5, thereby driving the support frame 7 to slide along the mounting frame 3, and adjust the height of the pressure plate 9, and then start the hydraulic cylinder 8 so that its piston end pushes the pressure plate 9 to press down. When the pressure plate 9 is pressed down onto the base paper, the pressure seat 2 is lowered by the installed external buffer device, and the base paper is blocked by the limit plate 25 on all sides to be folded inwardly. When the cables need to be bound and fixed, install the cable sheath 10 on the workbench 1, and then Then, the cable is passed through the center of the cable clamp 13 in the cable sleeve 10, and then the control sleeve 19 is rotated so that the control sleeve 19 and the threaded sleeve 17 are threadedly matched, so that the threaded sleeve 17 moves, and at the same time, the inclined arc block 15 is driven to move through the connecting rod 16. The inclined arc block 15 moves and pushes the inclined arc sleeve 14. The inclined arc sleeve 14 pushes the inclined sliding block 11 to slide along the inclined sliding groove 18. The inclined sliding block 11 tilts and slides while driving the inclined arc sleeve 14 to slide along the inclined arc block 15. Multiple groups of inclined sliding blocks 11 slide inwardly while reducing the distance between multiple groups of cable clamps 13. When the multiple groups of cable clamps 13 are attached to the outer wall of the cable, the control sleeve 19 is tightened so that the cable clamp 13 tightens and binds the outer wall of the cable, and the cable can be fixed.

[0043] The control cylinder 22 pushes the sliding seat 23 to slide, and the limiting plate 25 is pushed forward by the sliding seat 23. The limiting plate 25 is pushed simultaneously by multiple sets of limiting mechanisms to limit the surrounding areas of the base paper when the base paper is formed. The limiting plate 25 is slid along the sliding seat 23 through the sliding bar 24, and the limiting range between the multiple sets of limiting mechanisms can be adjusted. Then, the limiting plate 25 is fixed by the threaded cooperation of the bolts and the fixing holes 26.

[0044] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A biodegradable sugarcane pulp tableware forming machine, comprising a workbench (1), characterized in that: The workbench (1) is provided with a forming mechanism, and the forming mechanism comprises a pressure seat (2), a mounting frame (3), a motor (4), a transmission wheel (5), a transmission chain (6), a support frame (7), a hydraulic cylinder (8) and a pressure plate (9). The pressure seat (2) is arranged on the workbench (1), the mounting frame (3) is arranged on the workbench (1), the motor (4) is arranged on one side of the mounting frame (3), the transmission wheel (5) is provided with two groups respectively installed on the motor (4) and the mounting frame (3), the transmission chain (6) is arranged on the transmission wheel (5), the support frame (7) is arranged on the transmission chain (6), the pressure hydraulic cylinder (8) is arranged on the support frame (7), the pressure plate (9) is arranged on the piston end of the hydraulic cylinder (8), and one side of the motor (4) is provided with A wiring harness mechanism, comprising a wiring harness sleeve (10), an inclined slider (11), a spring (12), a wiring harness clamp (13), an inclined arc sleeve (14), an inclined arc block (15), a connecting rod (16) and a threaded sleeve (17); the wiring harness sleeve (10) is arranged on a workbench (1), the inclined slider (11) is arranged in the wiring harness sleeve (10), the spring (12) is arranged on the inclined slider (11), the wiring harness clamp (13) is arranged on the spring (12), the inclined arc sleeve (14) is fixedly arranged on the bottom surface of the inclined slider (11), the inclined arc block (15) is arranged in the inclined arc sleeve (14), the connecting rod (16) is arranged on the inclined arc block (15), and the threaded sleeve (17) is arranged on the outer wall of the wiring harness sleeve (10).

2. The biodegradable sugarcane pulp tableware forming machine according to claim 1, characterized in that: The two groups of transmission wheels (5) are respectively fixedly mounted on the output end of the motor (4) and rotatably mounted on the top of the mounting frame (3), and the transmission chain (6) is sleeved on the two groups of transmission wheels (5).

3. The biodegradable sugarcane pulp tableware forming machine according to claim 2, characterized in that: The support frame (7) is detachably mounted on one side of the transmission chain (6), and both sides of the support frame are slidably connected to the mounting frame (3).

4. The biodegradable sugarcane pulp tableware forming machine according to claim 1, characterized in that: The cable harness (10) is provided with an inclined slide groove (18), and the inclined slide grooves (18) are provided in multiple groups and are mirror-imaged in the cable harness (10). The inclined sliding blocks (11) are provided in multiple groups and are relatively slidably installed in the multiple groups of inclined slide grooves (18).

5. The biodegradable sugarcane pulp tableware forming machine according to claim 4, characterized in that: The outer wall of the cable harness sleeve (10) is rotatably provided with a control sleeve (19), and the inner wall of the control sleeve (19) is threadedly connected to the threaded sleeve (17).

6. The biodegradable sugarcane pulp tableware forming machine according to claim 5, characterized in that: The cable harness sleeve (10) is provided with a plurality of clearance grooves (20), and the plurality of connecting rods (16) are provided with a plurality of groups and are slidably installed in the clearance grooves (20). The two ends of the plurality of connecting rods (16) are respectively connected to the inclined arc blocks (15) and the threaded sleeves (17).

7. The biodegradable sugarcane pulp tableware forming machine according to claim 1, characterized in that: The workbench (1) is provided with a limiting mechanism, and the limiting mechanism comprises a mounting seat (21), a cylinder (22), a sliding seat (23), a slide bar (24), a limiting plate (25) and a fixing hole (26); the mounting seat (21) is fixedly mounted on the workbench (1); the cylinder (22) is mounted on the mounting seat (21); the sliding seat (23) is slidably mounted on the workbench (1); the slide bar (24) is slidably mounted on the sliding seat (23); the limiting plate (25) is fixedly mounted on the slide bar (24); a plurality of fixing holes (26) are provided and distributed on the limiting plate (25); and the limiting plate (25) is mounted by bolts and threadedly matched fixing holes (26).

8. The biodegradable sugarcane pulp tableware forming machine according to claim 7, characterized in that: A protective pad (27) is provided on the inner side of the limiting plate (25), and the limiting mechanism is provided with a plurality of groups distributed in a ring shape on the workbench (1).

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