Press machine with pressure alarm function

Abstract

The invention discloses a press machine with a pressure alarm function, and relates to the technical field of press machines, the press machine comprises a press machine, a material pushing device, a press machine workbench, a locking device, a side plate and a traction mechanism, the material pushing device is installed on the press machine, and an air cylinder is installed between the press machine workbench and the press machine. The press workbench is arranged to be of a horizontal moving structure, so that the feeding and discharging links of plates can be far away from the action part of the press, the risk that workers are injured is reduced, meanwhile, when the plates are discharged, the plates can be fixed to the upper portion of the press workbench through the locking assembly, and the working efficiency is improved. And through cooperation of the traction mechanism and the material pushing device, the plate can make contact with the material pushing device in a vertical reciprocating motion mode, so that a product clamped in a punched hole of the plate can be pushed down, separation of the product and plate waste is achieved, manual operation of workers is not needed, and the risk that the workers are injured is further reduced.

Description

Technical Field

[0001] This invention relates to the field of press technology, and in particular to a press with a pressure alarm function. Background Technology

[0002] A press (including punch presses and hydraulic presses) is a sophisticated and versatile press with a wide range of applications and high production efficiency. Presses can be widely used in processes such as cutting, punching, blanking, bending, riveting, and forming. They process metal parts by applying strong pressure to metal blanks to cause plastic deformation and fracture. Hydraulic presses are one of the most widely used types.

[0003] In existing technologies, when hydraulic presses are used to stamp sheet metal, manual loading and unloading are required. This puts the workers' hands close to the moving parts of the hydraulic press, posing a high safety hazard. Moreover, during the actual stamping process, some stamped products can be directly separated from the sheet metal, while others will get stuck in the punch holes of the sheet metal. Workers need to use tools to reach under the moving parts of the hydraulic press to operate, which further increases the risk of injury to the workers. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing presses with pressure alarm functions, the present invention is proposed.

[0006] Therefore, the problem to be solved by this invention is how to address the issue that in the prior art, when a hydraulic press is used to stamp sheet metal, manual loading and unloading is required. This puts the worker's hands close to the moving parts of the hydraulic press, posing a high safety hazard. Furthermore, during the actual stamping process, some stamped products can be directly separated from the sheet metal, while others become stuck in the punched holes of the sheet metal. Workers need to use tools to reach under the moving parts of the hydraulic press to operate, which further increases the risk of injury to the workers.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a press with a pressure alarm function, used for stamping sheet metal and separating the product from the waste, including a press, a pushing device, a press worktable, a locking device, a side plate, and a traction mechanism. The pushing device is installed on the press, and a cylinder is installed between the press worktable and the press. The press worktable slides horizontally on the press. The locking device includes a bracket and a clamping plate. The clamping plate is vertically slidably connected to the bracket. The bracket is disposed on the side of the press worktable. One side of the sheet metal is located between the bracket and the clamping plate. The side plate is fixedly installed on the press. The traction mechanism is connected between the side plate and the clamping plate. The traction mechanism is used to drive the clamping plate to move the sheet metal vertically while separating the product from the waste.

[0008] As a preferred embodiment of the press with pressure alarm function described in this invention, the locking device further includes a threaded rod, a rotating shaft coaxially fixedly connected to the top end of the threaded rod, a gear coaxially disposed at the top end of the rotating shaft, and a rack disposed on the side plate, wherein the gear meshes with the rack, and the clamping plate is threadedly connected to the threaded rod.

[0009] As a preferred embodiment of the press with pressure alarm function described in this invention, the locking device further includes a clutch and a limiting plate. The clutch is installed between the rotating shaft and the gear. The two limiting plates are fixedly connected to the side plate and located on both sides of the rack. One side of the gear is located between the two limiting plates.

[0010] In a preferred embodiment of the press with pressure alarm function described in this invention, the clutch comprises an inner ring and an outer ring. The inner ring is coaxially fixedly connected to the rotating shaft, and the outer ring is coaxially fixedly connected to the inner wall of the gear. The outer wall of the inner ring has an array of multiple receiving cavities. A second spring is fixedly connected to the inner wall of each receiving cavity. A locking block is fixedly connected to one end of each second spring. The inner wall of the outer ring has multiple spherical grooves, and one end of each locking block engages with the interior of the corresponding spherical groove.

[0011] In a preferred embodiment of the press with pressure alarm function described in this invention, a guide rod is vertically fixedly connected to the side of the press worktable, a bracket is axially slidably connected to the guide rod, and a first spring is fixedly connected between the bracket and the guide rod, the first spring being sleeved on the surface of the guide rod.

[0012] In a preferred embodiment of the press with pressure alarm function described in this invention, the traction mechanism includes a traction rod horizontally and elastically connected to a support, and a horizontal groove, an inclined groove, a curved groove, and a vertical groove formed on the side plate. The horizontal groove, inclined groove, curved groove, and vertical groove are connected end to end. The depth of the inclined groove is greater than the depth of the horizontal groove. The depths of the inclined groove, curved groove, and vertical groove are the same. The depth of the end point of the vertical groove is greater than the depth of the rest of the vertical groove. One end of the traction rod is slidably connected in the horizontal groove.

[0013] As a preferred embodiment of the press with pressure alarm function described in this invention, the traction mechanism includes an inclined section, which is disposed within a horizontal groove section, and the inclined section is used to transition between sections of different depths on the horizontal groove section.

[0014] In a preferred embodiment of the press with pressure alarm function described in this invention, the traction mechanism further includes a third spring, which is fixedly connected between the bracket and the traction rod, and is sleeved on the surface of the traction rod.

[0015] As a preferred embodiment of the press with pressure alarm function described in this invention, the pushing device includes a base, a slide groove and push rods. The slide groove is formed on the base, the base is fixedly connected between two side plates, and a plurality of push rods slide inside the slide groove and are vertically locked, and the plurality of push rods are vertically arranged.

[0016] As a preferred embodiment of the press with pressure alarm function described in this invention, the pushing device further includes a limiting plate, an end cover, and a stud. The limiting plate is coaxially fixedly connected to the push rod, and the top of the limiting plate is in contact with the bottom of the machine base. The stud is coaxially fixedly connected to the top of the push rod, and the end cover is threadedly connected to the stud. The bottom end face of the end cover is in contact with the top surface of the machine base.

[0017] The beneficial effects of this invention are: This invention sets the press worktable as a horizontally moving structure, which allows the loading and unloading of sheet metal to be kept away from the moving parts of the press, reducing the risk of injury to workers. At the same time, when the sheet metal is unloaded, the locking component can fix the sheet metal above the press worktable. Furthermore, through the cooperation of the traction mechanism and the pushing device, the sheet metal can be made to contact the pushing device in a vertical reciprocating motion, so as to push the product stuck in the punch hole of the sheet metal out, thereby separating the product from the waste sheet metal. No manual operation is required, further reducing the risk of injury to workers. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the main structure of a press with a pressure alarm function.

[0020] Figure 2 This is a schematic diagram of the connection structure between the press worktable and the press in a press with a pressure alarm function.

[0021] Figure 3 This is a side view of the locking device in a press with a pressure alarm function.

[0022] Figure 4 This is a schematic diagram of the bottom structure of the press table in a press with a pressure alarm function.

[0023] Figure 5 This is a schematic diagram of the main structure of the support frame in a press with a pressure alarm function.

[0024] Figure 6 This is a schematic diagram of the main structure of a press with a pressure alarm function, including a horizontal groove section, an inclined groove section, a curved groove section, and a vertical groove section.

[0025] Figure 7 This is a schematic diagram of the connection structure between the inner and outer rings in a press with a pressure alarm function.

[0026] Figure 8 This is a schematic diagram of the connection structure between the base and the push rod in a press with a pressure alarm function.

[0027] Figure 9 This is a schematic diagram of the connection structure between the stud and the end cap in a press with a pressure alarm function.

[0028] In the diagram: 1. Sheet metal; 2. Press; 3. Pushing device; 31. Machine base; 32. Slide groove; 33. Push rod; 34. Limiting plate; 35. End cover; 36. Stud; 4. Press worktable; 41. Guide rod; 42. First spring; 43. Cylinder; 5. Guide groove; 6. Locking device; 61. Bracket; 62. Threaded rod; 63. Clamping plate; 64. Limiting plate; 65. Gear; 66. Clutch; 661. Inner ring; 662. Outer ring; 663. Locking block; 664. Spherical groove; 665. Receiving cavity; 666. Second spring; 67. Rotating shaft; 68. Rack; 7. Side plate; 8. Track; 9. Traction mechanism; 91. Traction rod; 92. Third spring; 93. Horizontal groove section; 94. Inclined groove section; 95. Curved groove section; 96. Vertical groove section; 97. Sloping surface. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0032] Example 1, referring to Figures 1 to 4 ,as well as Figure 7This is the first embodiment of the present invention. This embodiment provides a press with a pressure alarm function for stamping sheet metal 1 and separating the product from the waste. It includes a press 2, a pushing device 3, a press worktable 4, a locking device 6, a side plate 7, and a traction mechanism 9. The pushing device 3 is installed on the press 2. A cylinder 43 is installed between the press worktable 4 and the press 2. The cylinder 43 can push the press worktable 4 to move horizontally on the press 2 to realize the switching of the press worktable 4 between the punching position and the loading and unloading position. The press worktable 4 slides horizontally on the press 2. The locking device 6 includes a bracket 61 and a clamping plate 63. The clamping plate 63 is vertically slidably connected to the bracket 61. The bracket 61 is set on the side of the press worktable 4. One side of the sheet metal 1 is located between the bracket 61 and the clamping plate 63. The side plate 7 is fixedly installed on the press 2. The traction mechanism 9 is connected between the side plate 7 and the clamping plate 63. The traction mechanism 9 is used to drive the clamping plate 63 to move the sheet metal 1 vertically while separating the product from the waste.

[0033] Specifically, sheet 1 is placed on the press worktable 4 and stamped by the press 2. The stamped product and waste are stored on the press worktable 4. At this time, the press worktable 4 moves the product and waste out of the press 2 for unloading. The bracket 61 and clamping plate 63 always lock the waste on the press worktable 4. With the cooperation of the traction mechanism 9, the bracket 61 and clamping plate 63 can gradually lift the waste during the horizontal movement of the press worktable 4. At this time, the stamped product is still stored on the press worktable 4, while the waste is located above the product. As the press worktable 4 moves, the bracket 61 and clamping plate 63 can drive the waste to make vertical reciprocating motion to shake off the product stuck in the punch hole of the waste. At the same time, the waste can cooperate with the pushing device 3. The pushing device 3 can further push the product stuck in the punch hole from above the waste, thereby achieving complete separation of waste and product without manual operation, reducing the risk of injury to workers.

[0034] It should be noted that in this embodiment, a track 8 is installed on the press 2, and a guide groove 5 matching the track 8 is opened below the press worktable 4. This allows the press worktable 4 to slide on the track 8 through the guide groove 5. The guide groove 5 and the track 8 have the same cross-section and are both T-shaped structures to prevent the press worktable 4 from deviating vertically or perpendicular to the direction of movement on the press 2.

[0035] Specifically, the locking device 6 also includes a threaded rod 62, a rotating shaft 67 coaxially fixedly connected to the top of the threaded rod 62, a gear 65 coaxially disposed at the top of the rotating shaft 67, and a rack 68 disposed on the side plate 7. The gear 65 meshes with the rack 68, and the clamping plate 63 is threadedly connected to the threaded rod 62.

[0036] Specifically, since the rack 68 is fixed on the side plate 7 and does not move, while the gear 65 can move horizontally synchronously with the bracket 61 through the rotating shaft 67 and the threaded rod 62, the horizontally moving gear 65 can cooperate with the rack 68 to drive the rotating shaft 67 to rotate, which in turn drives the threaded rod 62 to rotate, so that the threaded rod 62 can drive the clamping plate 63 to move vertically on the bracket 61, thereby achieving the clamping and loosening of the plate 1.

[0037] Specifically, the locking device 6 also includes a clutch 66 and a limiting plate 64. The clutch 66 is installed between the rotating shaft 67 and the gear 65. The two limiting plates 64 are fixedly connected to the side plate 7 and located on both sides of the rack 68. One side of the gear 65 is located between the two limiting plates 64. The clutch 66 includes an inner ring 661 and an outer ring 662. The inner ring 661 is coaxially fixedly connected to the rotating shaft 67, and the outer ring 662 is coaxially fixedly connected to the inner wall of the gear 65. The outer wall of the inner ring 661 has multiple receiving cavities 665 arranged in an array. The inner wall of each receiving cavity 665 is fixedly connected to a second spring 666. One end of each second spring 666 is fixedly connected to a locking block 663. The inner wall of the outer ring 662 has multiple spherical grooves 664. One end of each locking block 663 is engaged inside the corresponding spherical groove 664.

[0038] Specifically, the cooperation of the two limiting plates 64 can limit the movement of the gear 65 to ensure precise meshing between the gear 65 and the rack 68. The clutch 66 is used to ensure the normal rotation of the gear 65 even when the clamping plate 63 cannot move further due to the thickness of the plate 1, so that the press table 4 can move horizontally normally. Initially, the rack 68 drives the outer ring 662 to rotate through the gear 65. The outer ring 662 then drives the inner ring 661 to rotate through the locking block 663, the receiving cavity 665, and the spherical groove 664. In turn, the inner ring 661 drives the threaded rod 62 to rotate, thereby realizing the clamping plate When the clamping plate 63 moves down to its maximum stroke, it can no longer move down. This prevents the threaded rod 62 from rotating, which in turn prevents the inner ring 661 from rotating. However, the press table 4 is still in a horizontal motion state, and the gear 65 can still drive the outer ring 662 to rotate. At this time, the part of the inner wall of the outer ring 662 that does not have the spherical groove 664 will squeeze the locking block 663, causing the locking block 663 to move towards the receiving cavity 665 and compress the second spring 666. This allows the press table 4 to continue to move horizontally until it reaches below the moving part of the press 2.

[0039] It should be understood that the press 2 in this embodiment has a pressure alarm function. The press 2 is equipped with a pressure sensor to monitor the pressure value in the hydraulic system in real time. The pressure sensor converts the pressure signal into an electrical signal and compares the monitored electrical signal with a preset safety threshold. When the pressure exceeds the upper limit or falls below the lower limit, the system determines that it is in an abnormal state. Once the pressure is abnormal, the control circuit will immediately activate the alarm device, which usually includes a red light, an electric bell or a buzzer, and automatic shutdown to remind the operator in a conspicuous manner. The above-mentioned pressure alarm function is common knowledge in the existing technical field. The specific signal triggering, transmission, judgment and control are all technical means well known to those skilled in the art, and will not be described in detail here.

[0040] Example 2, please refer to Figure 5 and Figure 6 This is the second embodiment of the present invention.

[0041] The traction mechanism 9 includes a traction rod 91 horizontally and elastically connected to the bracket 61, and a horizontal groove 93, an inclined groove 94, a curved groove 95, and a vertical groove 96 formed on the side plate 7. The horizontal groove 93, the inclined groove 94, the curved groove 95, and the vertical groove 96 are connected end to end. The depth of the inclined groove 94 is greater than the depth of the horizontal groove 93. The depths of the inclined groove 94, the curved groove 95, and the vertical groove 96 are the same. The depth of the end point of the vertical groove 96 is greater than the depth of the rest of the vertical groove 96. One end of the traction rod 91 is slidably connected in the horizontal groove 93. The traction mechanism 9 includes an inclined surface 97, which is disposed in the horizontal groove 93. The inclined surface 97 is used to transition between parts of different depths on the horizontal groove 93. The traction mechanism 9 also includes a third spring 92, which is fixedly connected between the bracket 61 and the traction rod 91, and the third spring 92 is sleeved on the surface of the traction rod 91.

[0042] Specifically, when the sheet metal 1 is being fed, the press worktable 4 is located on the side away from the press 2. At this time, one end of the traction rod 91 is about to reach the end of the vertical groove section 96. After the worker places the sheet metal 1 on the press worktable 4, they press the supports 61 on both sides of the press worktable 4, causing the supports 61 to drive one end of the traction rod 91 into the starting point of the horizontal groove section 93. Then, the cylinder 43 is activated, which can drive the press worktable 4 and the sheet metal 1 on its surface to move into the interior of the press 2. During this process, one end of the traction rod 91 will slide inside the horizontal groove section 93. When the press worktable 4 drives the sheet metal 1 to the moving part below the press 2, one end of the traction rod 91 just enters the starting point of the inclined groove section 94, which has a depth greater than the horizontal groove section 93. After the sheet metal 1 is stamped on the surface of the press worktable 4, the cylinder 43 drives the press worktable 4 to move in the opposite direction. At this time, the traction rod 91 can move along the inclined groove section 94. The traction rod 91 can drive the support 61 to rise continuously, so that the support 61 can lift the stamped sheet 1 from the press table 4. As the press table 4 moves, the traction rod 91 can move from the inclined groove 94 into the curved groove 95. In this embodiment, the curved groove 95 is set as a wave-shaped structure, which allows the support 61 to drive the sheet 1 to move back and forth in the vertical direction under the drive of the traction rod 91, thereby shaking off the product stuck in the punch hole of the sheet 1. As the press table 4 moves further, when the traction rod 91 reaches the vertical groove 96 from the curved groove 95, the support 61 will return to its original position under the action of gravity. However, because the thickness of the product on the press table 4 will lift the sheet 1 a certain distance, the traction rod 91 will not return to the starting point of the horizontal groove 93, but will stop before the end point of the vertical groove 96. At this time, the operator manually operates the threaded rod 62 to unlock the sheet 1 so that the sheet 1 can be removed.

[0043] It should be noted that a guide rod 41 is vertically fixedly connected to the side of the press worktable 4, and the bracket 61 is axially slidably connected to the guide rod 41. A first spring 42 is fixedly connected between the bracket 61 and the guide rod 41. The first spring 42 is sleeved on the surface of the guide rod 41, which allows the first spring 42 to gradually return to its original position when the bracket 61 moves vertically upward. When the traction rod 91 enters the smooth section between the inclined groove section 94 and the curved groove section 95, and when the traction rod 91 reaches the vertical groove section 96, the first spring 42 is just in a non-deformed state. When the traction rod 91 enters the vertical groove section 96, the bracket 61 will pull the first spring 42 to deform under the action of gravity. The first spring 42 can then bear part of the weight of the bracket 61, so that there is a gap between the plate 1 and the product, so that the plate 1 can be removed.

[0044] It should be understood that when the traction rod 91 is located in the inclined groove section 94, the bracket 61 can drive the gear 65 to move upward synchronously through the rotating shaft 67. At this time, the gear 65 can move above the rack 68 through the pre-opened notch on one side of the limiting plate 64. When the traction rod 91 moves into the vertical groove section 96, the gear 65 can descend through the pre-opened notch on the other side of the limiting plate 64. After the staff presses the bracket 61, the gear 65 is back in the same plane as the rack 68, so as to realize the re-meshing of the gear 65 and the rack 68.

[0045] Example 3, please refer to Figure 8 and Figure 9 This is the third embodiment of the present invention.

[0046] Specifically, the feeding device 3 includes a base 31, a chute 32 and push rods 33. The chute 32 is formed on the base 31, and the base 31 is fixedly connected between two side plates 7. Multiple push rods 33 slide inside the chute 32 and are vertically locked, and the multiple push rods 33 are vertically arranged.

[0047] Specifically, when the bracket 61 drives the plate 1 to move vertically back and forth, the plate 1 can contact the bottom end of the push rod 33. At this time, the push rod 33 can push the product stuck in the punch hole on the plate 1 down, further realizing the separation of the product from the plate 1. The push rod 33 can slide horizontally on the slide groove 32 to adapt to products of different specifications.

[0048] Specifically, the feeding device 3 also includes a limiting plate 34, an end cover 35, and a stud 36. The limiting plate 34 is coaxially fixedly connected to the push rod 33, and the top of the limiting plate 34 is in contact with the bottom of the machine base 31. The stud 36 is coaxially fixedly connected to the top of the push rod 33, and the end cover 35 is threadedly connected to the stud 36. The bottom end face of the end cover 35 is in contact with the top surface of the machine base 31.

[0049] Specifically, by rotating the end cap 35, it can be moved vertically upward on the stud 36. At this time, the distance between the end cap 35 and the limiting plate 34 increases and is greater than the thickness of the slide groove 32. Therefore, the push rod 33 can slide freely inside the slide groove 32 to adjust the horizontal position of the push rod 33 to accommodate different specifications of sheet 1 and products. After the adjustment is completed, the end cap 35 is tightened again so that the end cap 35 and the limiting plate 34 lock the push rod 33 in the current position again.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A press with a pressure alarm function, used for stamping sheet metal (1) and separating the product from the waste, comprising a press (2), characterized in that, Also includes: A feeding device (3) is installed on a press (2); A press worktable (4) is provided, and a cylinder (43) is installed between the press worktable (4) and the press (2). The press worktable (4) slides horizontally on the press (2). Locking device (6), the locking device (6) includes a bracket (61) and a clamping plate (63), the clamping plate (63) is vertically slidably connected to the bracket (61), the bracket (61) is set on the side of the press workbench (4), and one side of the plate (1) is located between the bracket (61) and the clamping plate (63). Side plate (7), said side plate (7) is fixedly mounted on press (2); and The traction mechanism (9) is connected between the side plate (7) and the clamping plate (63). The traction mechanism (9) is used to drive the clamping plate (63) to move the plate (1) vertically while separating the product from the waste.

2. A press with a pressure alarm function according to claim 1, characterized in that, The locking device (6) further includes a threaded rod (62), a rotating shaft (67) coaxially fixedly connected to the top of the threaded rod (62), a gear (65) coaxially disposed at the top of the rotating shaft (67), and a rack (68) disposed on the side plate (7). The gear (65) meshes with the rack (68), and the clamping plate (63) is threadedly connected to the threaded rod (62).

3. A press with a pressure alarm function according to claim 2, characterized in that, The locking device (6) also includes a clutch (66) and a limiting plate (64). The clutch (66) is installed between the rotating shaft (67) and the gear (65). The two limiting plates (64) are fixedly connected to the side plate (7) and located on both sides of the rack (68). One side of the gear (65) is located between the two limiting plates (64).

4. A press with a pressure alarm function according to claim 3, characterized in that, The clutch (66) includes an inner ring (661) and an outer ring (662). The inner ring (661) is coaxially fixedly connected to the rotating shaft (67), and the outer ring (662) is coaxially fixedly connected to the inner wall of the gear (65). The outer wall of the inner ring (661) is provided with a plurality of receiving cavities (665). The inner wall of each receiving cavity (665) is fixedly connected with a second spring (666). One end of each second spring (666) is fixedly connected with a locking block (663). The inner wall of the outer ring (662) is provided with a plurality of spherical grooves (664). One end of each locking block (663) is engaged with the interior of the corresponding spherical groove (664).

5. A press with a pressure alarm function according to claim 1, characterized in that, A guide rod (41) is vertically fixedly connected to the side of the press workbench (4), and the bracket (61) is axially slidably connected to the guide rod (41). A first spring (42) is fixedly connected between the bracket (61) and the guide rod (41), and the first spring (42) is sleeved on the surface of the guide rod (41).

6. A press with a pressure alarm function according to claim 1, characterized in that, The traction mechanism (9) includes a traction rod (91) that is horizontally elastically connected to the bracket (61), and a horizontal groove (93), an inclined groove (94), a curved groove (95), and a vertical groove (96) opened on the side plate (7). The horizontal groove (93), the inclined groove (94), the curved groove (95), and the vertical groove (96) are connected end to end in sequence. The depth of the inclined groove (94) is greater than the depth of the horizontal groove (93). The depths of the inclined groove (94), the curved groove (95), and the vertical groove (96) are the same. The depth of the end point of the vertical groove (96) is greater than the depth of the rest of the vertical groove (96). One end of the traction rod (91) is slidably connected in the horizontal groove (93).

7. A press with a pressure alarm function according to claim 6, characterized in that, The traction mechanism (9) includes a sloping section (97) disposed within a horizontal groove section (93), the sloping section (97) being used to transition between sections of different depths on the horizontal groove section (93).

8. A press with a pressure alarm function according to claim 6, characterized in that, The traction mechanism (9) also includes a third spring (92), which is fixedly connected between the bracket (61) and the traction rod (91), and the third spring (92) is sleeved on the surface of the traction rod (91).

9. A press with a pressure alarm function according to claim 1, characterized in that, The feeding device (3) includes a base (31), a chute (32) and push rods (33). The chute (32) is opened on the base (31). The base (31) is fixedly connected between two side plates (7). Multiple push rods (33) slide inside the chute (32) and are vertically locked. Multiple push rods (33) are vertically arranged.

10. A press with a pressure alarm function according to claim 9, characterized in that, The feeding device (3) also includes a limiting plate (34), an end cap (35) and a stud (36). The limiting plate (34) is coaxially fixedly connected to the push rod (33). The top of the limiting plate (34) is in contact with the bottom of the machine base (31). The stud (36) is coaxially fixedly connected to the top of the push rod (33). The end cap (35) is threadedly connected to the stud (36). The bottom end face of the end cap (35) is in contact with the top surface of the machine base (31).

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