Press machine with protective structure

Abstract

The invention relates to a press machine with a protection structure, and belongs to the technical field of press machines, the press machine comprises a machine body, a supporting cabinet for supporting is fixedly mounted on the bottom surface of the machine body, a machining end for extrusion is arranged on the upper side of the inner wall of the machine body, and an N-shaped protection frame for fence protection is fixedly mounted on the top surface of the supporting cabinet and located on the peripheral side of the machine body; the left side and the right side of the surface of the machining end are each provided with a pushing mechanism used for outward turning protection through a connecting rod, and a plurality of T-shaped grooves used for fixing are formed in the position, located on the lower side of the machining end, of the top face of the supporting cabinet. And the situation that the limbs of an operator possibly stretch into the device accidentally to be extruded and stamped in the equipment running process, and consequently serious limb disability is caused is avoided, the device has the automatic material taking function, the problem that fingers are possibly cut by machined products after the operator takes materials is solved, and then the safety of the device in the using process is improved.

Description

Technical Field

[0001] The invention relates to the technical field of presses, in particular to a press with a protective structure. Background Art

[0002] The press is a versatile press with a sophisticated structure, which has the characteristics of wide application and high production efficiency. The press can be widely used in cutting, punching, blanking, bending, riveting and forming processes. The metal blank is processed into parts by applying strong pressure to cause plastic deformation and fracture of the metal.

[0003] Traditional presses do not have good protective structures during use, so the presses will generate huge pressure when working. Without a good protective structure, the operator's limbs may accidentally extend into the dangerous area during the operation of the equipment, resulting in squeezing, punching, and serious limb injuries, affecting the safety of the press. When the press processes materials, it may produce debris, sparks and other splashes. Without the protection of the protective structure, these splashes may splash onto the operator's eyes, face or other parts of the body, causing burns, punctures and other injuries. Traditional presses do not have the function of automatic material removal after processing. When the operator takes the material, the processed product may cut his fingers, thereby increasing the risk of the press taking the material.

[0004] In order to solve the above problems, a press with a protective structure is needed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a press with a protective structure, which solves the problem that traditional devices do not have a good protective structure. It can prevent the operator's limbs from accidentally being squeezed or punched during the operation of the equipment, causing serious limb injuries. It can effectively prevent splashes from splashing onto the operator's eyes, face or other parts of the body, causing burns, punctures and other injuries. The device also has the function of automatic material picking, which avoids the problem that the operator may cut his fingers when picking up materials, thereby increasing the safety of the device during use.

[0006] To achieve the above object, the present invention provides the following technical solution: A press with a protection structure, including a machine body, a support cabinet for support is fixedly installed on the bottom surface of the machine body, a processing end for extrusion is provided on the upper side of the inner wall of the machine body, an N-shaped protection frame for enclosing and protecting is fixedly installed on the top surface of the support cabinet around the circumference of the machine body, push mechanisms for outward turning protection are provided on the left and right sides of the surface of the processing end through connecting rods, a plurality of T-shaped grooves for fixing are opened on the top surface of the support cabinet below the processing end, and a processing base for processing is fixedly installed on the inner walls of the plurality of T-shaped grooves through bolts. Top moving mechanisms for ejecting materials are provided at the left and right ends of the two connecting rods, and the top moving mechanisms are located directly below the processing base;

[0007] The push mechanism includes a connecting push rod rotatably connected to the rod arm of the connecting rod. The two corresponding connecting push rods are jointly fixedly installed with a protection frame for pushing through two rotatably connected connecting blocks, and both the left and right sides of the protection frame are fixedly connected to the upper side of the inner wall of the machine body through rotatably connected inclined support plates.

[0008] Further, the top moving mechanism includes a pull rod fixedly installed at one end of the connecting rod. The lower ends of the two corresponding pull rods penetrate through the top surface of the support cabinet and are jointly installed with a moving plate for moving up and down. A top material rod for ejecting materials is fixedly installed on the top surface of the moving plate directly below the processing base. Picking mechanisms for pushing materials are provided on the opposite sides of the rod arms of the two corresponding pull rods, and two limiting sliding components for limiting are provided on the rear side of the inner wall of the support cabinet above the moving plate, and the two limiting components and the two picking mechanisms are arranged in an up and down corresponding manner.

[0009] Further, the picking mechanism includes a transmission block fixedly installed on the rod arm of the pull rod, and an L-shaped rotating rod for rotating is rotatably installed at the rear side of the bottom surface of the transmission block. Inclined blocks for pushing are fixedly connected to the rod arms of the L-shaped rotating rod, and a first return spring for rotating is sleeved around the circumference of the L-shaped rotating rod on the top surface of the inclined block, and the upper end of the first return spring is fixedly connected to the bottom surface of the transmission block. A limiting rod for limiting the rotation of the inclined block is fixedly installed at the rear side of the bottom surface of the transmission block, and the rod arm of the limiting rod is embedded and connected to the surface of the inclined block. A moving opening for moving is opened on the top surface of the support cabinet below the inclined block.

[0010] Further, the limiting component includes a conversion groove block fixedly connected to the rear side of the inner wall of the support cabinet, and inside the inner wall of the conversion groove block, a circular groove is opened on the lower side of the rear side of the inner wall of the conversion groove block away from the processing base, and a check plate for anti-return is rotatably installed on the rear side of the inner wall of the circular groove through a rotating shaft. A second return spring for rotating is fixedly installed on the rear side of the inner wall of the circular groove on the shaft side of the rotating shaft, and the front end of the second return spring is fixedly connected to the rear surface of the check plate. A fixed clamping groove for clamping is opened at the edge of the lower side inside the conversion groove block.

[0011] Further, the N-type protective frame is an N-type frame structure, and a plurality of through holes for ventilation are formed on the periphery of the frame structure. The protective frame includes a door-shaped frame body and a plurality of blocking rods fixed on the inner wall of the door-shaped frame body, and all the blocking rods are cylindrical rod structures.

[0012] Further, the left and right sides of the moving plate are respectively in close contact with the opposite sides of the inner wall of the support cabinet, and the moving plate is a rectangular plate structure. The ejector rod includes a connecting vertical rod and a pushing disc fixed at the upper end of the connecting vertical rod, and the diameter of the pushing disc is set to be the same as the inner diameter of the processing base. The surface of the pushing disc penetrates through the upper side of the inner wall of the support cabinet and extends to the inner wall of the processing base.

[0013] Further, both of the transmission blocks are structures in which a rectangular plate cuts off a corner, and the two cut sides of the cut corner are respectively located at the center positions of the adjacent two sides of the rectangular plate. The rear ends of the two L-shaped rotating rods are chamfered.

[0014] Further, both of the inclined blocks are V-shaped plate structures, both of the moving openings are V-shaped openings, and the shapes of the two moving openings are the same as those of the two inclined blocks, and the size of the moving opening is 1.3 times the size of the inclined block.

[0015] Further, both of the conversion groove blocks are groove plate structures in which a P-shaped groove is formed on one side of the surface of a plate body structure, and both sides of the lower part of the inner wall of the P-shaped groove are arc-treated. The inner walls of the two conversion groove blocks are in contact with the rod arms of the L-shaped rotating rods.

[0016] Further, both of the check plates include a connecting square plate and a clamping plate fixed on one side of the surface of the connecting square plate for clamping, and the surface of the clamping plate is clamped with the inner wall of the fixed clamping groove. The thickness of the connecting square plate is set to be the same as the groove depth of the conversion groove block.

[0017] Compared with the prior art, the present invention provides a press with a protective structure, having the following

[0018] Beneficial effects:

[0019] 1. During the processing process, the device can enclose and protect the processing position, and has an external pushing protection function during the processing process, avoiding the problem that the operator's limbs may accidentally extend into the equipment during operation and be squeezed or stamped, resulting in serious limb disabilities. With the enclosure protection, it can effectively avoid the problem that flying objects splash onto the operator's eyes, face or other parts of the body, causing injuries such as burns and stabs. Moreover, the device has an automatic material taking function, avoiding the problem that the operator may be cut by the processed product when taking materials, thereby increasing the safety during the use of the device.

[0020] 2. The device utilizes the combined structure of the portal-shaped frame of the N-shaped protective frame and several blocking rods, which can ensure the protection quality of the N-shaped protective frame for the operator, avoid the problem of the operator's arm passing through, ensure the safety of the device during use, and through the fitting of the moving plate, it can ensure that under the lifting of the connecting vertical rod, the moving plate rises stably without shaking.

[0021] 3. By the way of cutting off the edges and corners of the transmission block, the device can ensure that while the connecting vertical rod drives the up-and-down structure, it will not affect the swaying of the N-shaped protective frame, ensuring the normal use of the internal structure of the device, and through the chamfering treatment at the rear end of the L-shaped rotating rod, it can better ensure the sliding rotation of the L-shaped rotating rod in the conversion groove block.

[0022] 4. Utilizing the V-shaped structure of the inclined block, the device can better push out the product on the processing base during the rotation process, ensuring the material taking effect of the processed product, and through the clamping effect of the clamping plate 13 and the fixed clamping groove 1106, it can ensure that when the L-shaped rotating rod moves upward, it can smoothly enter the inclined side of the conversion groove block, facilitating the rotation of the L-shaped rotating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the overall three-dimensional view of the present invention;

[0024] Figure 2 is the unfolded three-dimensional view of the support cabinet of the present invention;

[0025] Figure 3 is the combined three-dimensional view of the pushing mechanism and the jacking mechanism of the present invention;

[0026] Figure 4 is the horizontal cross-sectional three-dimensional view of the support cabinet of the present invention;

[0027] Figure 5 is the three-dimensional view of the N-shaped protective frame of the present invention;

[0028] Figure 6 is the three-dimensional view of the pushing mechanism of the present invention;

[0029] Figure 7 is the three-dimensional view of the limiting component of the present invention;

[0030] Figure 8 is the present invention Figure 7 Schematic diagram of the enlarged structure of part A in;

[0031] Figure 9 is the three-dimensional view of the material taking mechanism of the present invention;

[0032] Figure 10 is the present invention Figure 9 Schematic diagram of the enlarged structure of part B in.

[0033] In the figure: 1. Machine body; 2. Support cabinet; 3. Processing end; 4. N-shaped protective frame; 401. Through port; 5. Pushing mechanism; 501. Connecting push rod; 502. Connecting block; 503. Protective frame; 504. Inclined support plate; 5031. Door-shaped frame body; 5032. Stop rod; 6. T-shaped groove; 7. Processing base; 8. Connecting rod; 9. Jacking mechanism; 901. Pull rod; 902. Moving plate; 903. Pushing rod; 9031. Connecting vertical rod; 9032. Pushing disk; 10. Material taking mechanism; 1001. Transmission block; 1002. L-shaped rotating rod; 1003. Inclined block; 1004. First return spring; 1005. Moving port; 11. Limit component; 1101. Conversion groove block; 1102. Circular groove; 1103. Rotating shaft; 1104. Check plate; 1105. Second return spring; 1106. Fixed card slot; 12. Connecting square plate; 13. Card plate; 14. Limit rod. Detailed implementation mode

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1 to 10 , a press with a protection structure in this embodiment includes a machine body 1. A support cabinet 2 for support is fixedly installed on the bottom surface of the machine body 1. A processing end 3 for extrusion is provided on the upper side of the inner wall of the machine body 1. An N-shaped protective frame 4 for enclosing and protecting is fixedly installed on the top surface of the support cabinet 2 around the machine body 1. The N-shaped protective frame 4 is an N-shaped frame structure, and a plurality of through ports 401 for ventilation are opened on the periphery of the frame structure. The opened through ports 401 can allow air to circulate, improving the stability and safety of the N-shaped protective frame 4. On the left and right sides of the surface of the processing end 3, a pushing mechanism 5 for outward turning protection is provided through connecting rods 8. A plurality of T-shaped grooves 6 for fixing are opened on the top surface of the support cabinet 2 under the processing end 3, and a processing base 7 for processing is fixedly installed on the inner walls of the plurality of T-shaped grooves 6 through bolts. At the left and right ends of the two connecting rods 8, a jacking mechanism 9 for pushing materials is provided, and the jacking mechanism 9 is located directly below the processing base 7;

[0036] The driving mechanism 5 includes a connecting push rod 501 rotatably connected to the rod arm of the connecting rod 8. Two corresponding connecting push rods 501 are both fixedly installed with a protective frame 503 for pushing protection through two rotatably connected connecting blocks 502. The left and right sides of the protective frame 503 are fixedly connected to the upper side of the inner wall of the machine body 1 through rotatably connected inclined support plates 504. The protective frame 503 includes a portal-shaped frame body 5031 and a number of blocking rods 5032 fixed to the inner wall of the portal-shaped frame body 5031, and the number of blocking rods 5032 are all cylindrical rod structures.

[0037] Among them, the jacking mechanism 9 includes a pull rod 901 fixedly installed at one end of the connecting rod 8. The lower ends of two corresponding pull rods 901 penetrate through the top surface of the support cabinet 2 and are jointly installed with a moving plate 902 for moving up and down. The left and right sides of the moving plate 902 are respectively in close contact with the opposite sides of the inner wall of the support cabinet 2, and the moving plate 902 is a rectangular plate structure. A blanking rod 903 for ejecting materials is fixedly installed on the top surface of the moving plate 902 directly below the processing base 7. The blanking rod 903 includes a connecting vertical rod 9031 and a pushing disk 9032 fixed to the upper end of the connecting vertical rod 9031, and the diameter of the pushing disk 9032 is set to be the same as the inner diameter of the processing base 7. The surface of the pushing disk 9032 penetrates through the upper side of the inner wall of the support cabinet 2 and extends to the inner wall of the processing base 7. A material taking mechanism 10 for pushing materials is provided on the relative side of the rod arms of two corresponding pull rods 901, and two limiting components 11 for limiting sliding are provided above the moving plate 902 on the rear side of the inner wall of the support cabinet 2, and the two limiting components 11 and the two material taking mechanisms 10 are arranged in an up-and-down corresponding manner.

[0038] Among them, the material taking mechanism 10 includes a transmission block 1001 fixedly installed on the rod arm of the pull rod 901. A rear side of the bottom surface of the transmission block 1001 is rotatably installed with an L-shaped rotating rod 1002 for rotation. Chamfers are made at the rear ends of both L-shaped rotating rods 1002. Both transmission blocks 1001 are structures obtained by cutting off a corner from a rectangular plate body, and the two cut sides of the cut-off corner are respectively located at the central positions of two adjacent surfaces of the rectangular plate body. Rod arms of the L-shaped rotating rod 1002 are fixedly connected with inclined blocks 1003 for pushing. A top surface of the inclined block 1003 is sleeved with a first return spring 1004 for rotation around the L-shaped rotating rod 1002, and an upper end of the first return spring 1004 is fixedly connected with the bottom surface of the transmission block 1001. A rear side of the bottom surface of the transmission block 1001 is fixedly installed with a limiting rod 14 for limiting the rotation of the inclined block 1003, and a rod arm of the limiting rod 14 is embedded and connected with a surface of the inclined block 1003. A moving opening 1005 for movement is opened on a top surface of the support cabinet 2 below the inclined block 1003. Both inclined blocks 1003 are V-shaped plate body structures. Both moving openings 1005 are V-shaped openings, and shapes of the two moving openings 1005 are the same as those of the two inclined blocks 1003. A size of the moving opening 1005 is 1.3 times a size of the inclined block 1003.

[0039] Among them, the limiting component 11 includes a conversion groove block 1101 fixedly connected to the rear side of the inner wall of the support cabinet 2. Inner walls of the conversion groove block 1101, both conversion groove blocks 1101 are groove plate structures with a P-shaped groove opened on one side of the surface. Arc treatments are made on both left and right sides below the inner wall of the P-shaped groove. A circular groove 1102 is opened on a lower side of a rear side of the inner wall of the conversion groove block 1101, far from the processing base 7. A rear side of the inner wall of the circular groove 1102 is rotatably installed with a check plate 1104 for check by a rotating shaft 1103. Inner walls of the two conversion groove blocks 1101 are in contact with rod arms of the L-shaped rotating rod 1002. A rear side of the inner wall of the circular groove 1102 is fixedly installed with a second return spring 1105 for rotation on an axial side of the rotating shaft 1103, and a front end of the second return spring 1105 is fixedly connected with a rear surface of the check plate 1104. A fixing card slot 1106 for clamping is opened at an edge of a lower side inside the conversion groove block 1101. Both check plates 1104 include a connecting square plate 12 and a clamping plate 13 fixed on one side of the surface of the connecting square plate 12 for clamping. A surface of the clamping plate 13 is clamped with an inner wall of the fixing card slot 1106. A thickness of the connecting square plate 12 is the same as a depth of the groove of the conversion groove block 1101.

[0040] The working principle of the above embodiment is as follows:

[0041] Before using the device, the processed product needs to be placed on the processing base 7. Then, the body 1 drives the processing end 3 to apply pressure to the product on the processing base 7. The innovative structure of this device will not elaborate too much on the existing mature technologies. The body 1 in this device has the function of a servo press, which is an existing mature technology. After the placement is completed, the processing end 3 will move downward, and then start processing the product;

[0042] During the process of the processing end 3 moving downward, it can swing and push the lower part of the body 1 through the pushing mechanism 5 to prevent the problem of harm to the operator's arm under the processing end 3. When the processing end 3 moves downward, the protective frame 503 on the connecting block 502 driven by the connecting push rod 501 will rotate around the inclined support plate 504 to achieve the effect of preventing swing on the lower side of the body 1. And during the process of the processing end 3 moving downward, the pull rod 901 will also move downward accordingly. The pull rod 901 drives the structure on the L-shaped rotating rod 1002 to move downward together through the transmission block 1001;

[0043] The inclined block 1003 on the L-shaped rotating rod 1002 will enter the interior of the support cabinet 2 through the moving port 1005. In this way, the processing end 3 also completes the processing effect on the product on the processing base 7. And during the process of the L-shaped rotating rod 1002 moving downward, it will push the check valve plate 1104 on the conversion groove block 1101 to open the check valve plate 1104 outward, so as to ensure that the L-shaped rotating rod 1002 moves out of the conversion groove block 1101. When the L-shaped rotating rod 1002 moves out of the conversion groove block 1101, under the rotational force of the second return spring 1105, the check valve plate 1104 will rotate back, and under the clamping of the clamping plate 13 and the fixed clamping groove 1106, it will block the vertical inner wall of the conversion groove block 1101, which is helpful for the upward rotation of the L-shaped rotating rod 1002 in the later stage;

[0044] After the processing end 3 moves downward and the processing is completed, it moves upward. At this time, under the pulling of the connecting push rod 501, the protective frame 503 will be retracted to the lower side of the machine body 1, and the pull rod 901 will also move upward. When the pull rod 901 moves upward, it will drive the L-shaped rotating rod 1002 and the ejector rod 903 to move upward at the same time. In this way, the ejector rod 903 will eject the product on the processing base 7 through the pushing disk 9032. The inner walls of the two conversion groove blocks 1101 are arranged in opposite left and right directions. That is to say, the left conversion groove block 1101 drives the structure to run clockwise, while the right conversion groove block 1101 drives the structure to run counterclockwise. Here, the operating structure of the left conversion groove block 1101 is described. The left L-shaped rotating rod 1002 will move to the inner wall of the left conversion groove block 1101. In the P-shaped groove of the left conversion groove block 1101, it will first rotate clockwise in the top view state. Because the rear end of the left L-shaped rotating rod 1002 will rotate clockwise in the top view state under the action of the inclined inner wall of the left conversion groove block 1101. Due to the blocking effect of the check plate 1104, when the left L-shaped rotating rod 1002 moves upward, it will rotate clockwise in the top view state. When the left L-shaped rotating rod 1002 rotates clockwise in the top view state, it will drive the inclined block 1003 on the rod arm of the left L-shaped rotating rod 1002 to also rotate clockwise in the top view state. Therefore, the inclined block 1003 on the rod arm of the right L-shaped rotating rod 1002 will rotate counterclockwise in the top view state. Through the relative rotation of the two inclined blocks 1003, the product pushed out by the pushing disk 9032 can be pushed out of the processing base 7, which is convenient for the operator to take and avoid the problem of cutting the operator's fingers;

[0045] When the processing end 3 continues to move up and down, the L-shaped rotating rod 1002 will rotate on the inner wall of the conversion groove block 1101. When it reaches the corner position of the inner wall, it will run in the reverse direction under the turning force of the first return spring 1004, thereby ensuring the reset effect of the inclined block 1003. And at this time, the L-shaped rotating rod 1002 is at the leftmost side of the inner wall of the conversion groove block 1101, which is convenient for the next downward movement effect of the processing end 3 driving the L-shaped rotating rod 1002. And the rotating position of the inclined block 1003 will be positioned by the limiting rod 14 to ensure the coincidence effect with the moving port 1005.

[0046] The installation methods, connection methods or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can realize the control of the electrical components through simple programming, and the existing publicly disclosed power connection technology also belongs to the common knowledge in this field. Therefore, the specific structural composition and working principle are not described in detail in this embodiment.

Claims

1. A press with a protective structure, comprising a body (1), characterized in that: A support cabinet (2) for supporting is fixedly installed on the bottom surface of the machine body (1), a processing end head (3) for extrusion is provided on the upper side of the inner wall of the machine body (1), an N-shaped protective frame (4) for enclosure protection is fixedly installed on the top surface of the support cabinet (2) located on the peripheral side of the machine body (1), a pushing mechanism (5) for outward protection is provided on the left and right sides of the surface of the processing end head (3) through a connecting rod (8), a plurality of T-shaped slots (6) for fixing are opened on the top surface of the support cabinet (2) located on the lower side of the processing end head (3), and a processing base (7) for processing is fixedly installed on the inner wall of the plurality of T-shaped slots (6) through bolts, and a pushing mechanism (9) for pushing material is provided on the left and right ends of the two connecting rods (8), and the pushing mechanism (9) is located directly below the processing base (7); The pushing mechanism (5) comprises a connecting push rod (501) rotatably connected to the arm of the connecting rod (8), and two corresponding connecting push rods (501) are fixedly mounted with a protective frame (503) for pushing protection via two rotatably connected connecting blocks (502), and the left and right sides of the protective frame (503) are fixedly connected to the upper side of the inner wall of the machine body (1) via a rotatably connected inclined support plate (504).

2. A press with a protective structure according to claim 1, characterized in that: The pushing mechanism (9) includes a pull rod (901) fixedly mounted on one end of the connecting rod (8), and the lower ends of the two corresponding pull rods (901) penetrate through the top surface of the supporting cabinet (2) and are jointly mounted with a movable plate (902) for moving up and down, and the top surface of the movable plate (902) is located directly below the processing base (7) and is fixedly mounted with a pushing rod (903) for pushing materials, and opposite sides of the two corresponding pull rods (901) are provided with a material picking mechanism (10) for pushing materials, and two limit assemblies (11) for limiting sliding are provided on the rear side of the inner wall of the supporting cabinet (2) and above the movable plate (902), and the two limit assemblies (11) and the two material picking mechanisms (10) are arranged correspondingly up and down.

3. A press with a protective structure according to claim 2, characterized in that: The material taking mechanism (10) comprises a transmission block (1001) fixedly mounted on the arm of the pull rod (901), and an L-shaped rotating rod (1002) for rotation is rotatably mounted on the rear side of the bottom surface of the transmission block (1001), and the arm of the L-shaped rotating rod (1002) is fixedly connected with a tilting block (1003) for pushing, and the top surface of the tilting block (1003) is located on the circumferential side of the L-shaped rotating rod (1002) and is sleeved with a first rotation spring (1003) for rotation. 04), and the upper end of the first rotary spring (1004) is fixedly connected to the bottom surface of the transmission block (1001), a limit rod (14) for limiting the rotation of the tilting block (1003) is fixedly installed on the rear side of the bottom surface of the transmission block (1001), and the rod arm of the limit rod (14) is embedded and connected with the surface of the tilting block (1003), and the top surface of the support cabinet (2) is located at the lower side of the tilting block (1003) and is provided with a moving opening (1005) for movement.

4. A press with a protective structure according to claim 3, characterized in that: The limit assembly (11) comprises a conversion slot block (1101) fixedly connected to the rear side of the inner wall of the support cabinet (2), and the inner wall of the conversion slot block (1101), a circular groove (1102) is provided on the lower side of the rear side of the inner wall of the conversion slot block (1101) away from the processing base (7), and a non-return plate (1104) for non-return is rotatably installed on the rear side of the inner wall of the circular groove (1102) through a rotating shaft (1103), a second rotation spring (1105) for rotation is fixedly installed on the rear side of the inner wall of the circular groove (1102) located on the axial side of the rotating shaft (1103), and the front end of the second rotation spring (1105) is fixedly connected to the rear of the non-return plate (1104), and a fixed clamping groove (1106) for clamping is provided on the corner of the lower side of the interior of the conversion slot block (1101).

5. A press with a protective structure according to claim 4, characterized in that: The N-shaped protection frame (4) is an N-shaped frame structure, and a plurality of through openings (401) for ventilation are provided on the peripheral side of the frame structure. The protection frame (503) comprises a door-shaped frame body (5031) and a plurality of blocking rods (5032) fixed on the inner wall of the door-shaped frame body (5031), and the plurality of blocking rods (5032) are all cylindrical rod structures.

6. A press with a protective structure according to claim 3, characterized in that: The left and right sides of the movable plate (902) are respectively tightly fitted with the opposite sides of the inner wall of the supporting cabinet (2), and the movable plate (902) is a rectangular plate structure. The ejecting rod (903) includes a connecting vertical rod (9031) and a pushing plate (9032) fixed to the upper end of the connecting vertical rod (9031), and the diameter of the pushing plate (9032) is set to be the same as the inner diameter of the processing base (7). The surface of the pushing plate (9032) passes through the upper side of the inner wall of the supporting cabinet (2) and extends to the inner wall of the processing base (7).

7. A press with a protective structure according to claim 4, characterized in that: The two transmission blocks (1001) are both structures with a corner cut off from a rectangular plate, and the cutouts on both sides of the cut corner are respectively located at the center of two adjacent sides of the rectangular plate, and the rear ends of the two L-shaped rotating rods (1002) are chamfered.

8. A press with a protective structure according to claim 4, characterized in that: The two tilting blocks (1003) are both V-shaped plate structures, the two movable openings (1005) are both V-shaped openings, and the shapes of the two movable openings (1005) are the same as the shapes of the two tilting blocks (1003), while the size of the movable openings (1005) is 1.3 times the size of the tilting blocks (1003).

9. A press with a protective structure according to claim 4, characterized in that: The two conversion slot blocks (1101) are both plate structures with a P-shaped slot on one side of the surface, and the left and right sides below the inner wall of the P-shaped slot are arc-shaped. The inner walls of the two conversion slot blocks (1101) are in contact with the rod arm of the L-shaped rotating rod (1002).

10. A press with a protective structure according to claim 4, characterized in that: The two check plates (1104) include a connecting square plate (12) and a clamping plate (13) fixed on one side of the surface of the connecting square plate (12) for clamping, and the surface of the clamping plate (13) and the inner wall of the fixed clamping groove (1106) are mutually clamped, and the thickness of the connecting square plate (12) and the groove depth of the conversion groove block (1101) are set to be the same.

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