Door body limiting mechanism of thermal forming press
By setting up a limiting mechanism on the door body of the thermoforming press, and using the cooperation of the upper limit sensor and limit pin, the safety hazards of the door body falling due to broken wire rope are solved, and safety and the life of the electric push rod are extended.
Patent Information
- Application Number
- CN202422030446.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The door body of the existing thermoforming press may fall due to the break of the wire rope during the rising state, which poses a safety hazard.
The limiting mechanism is adopted, including a frame, door body, drive assembly, upper limit column, upper limit sensor, limit shaft, electric push rod and limit pin. The upper limit sensor controls the rise height of the door body and prevents falling under the action of the limit pin.
Even if the wire rope is broken, the door body will not fall directly, which improves safety and extends the service life of the electric push rod.
Smart Images
Figure CN223045259U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of presses, and more specifically, it refers to a door body limiting mechanism for a hot forming press. Background Art
[0002] Due to its fast speed and low cost, die processing has gained a wider and wider application in recent years. A press is a device that processes powder materials into formed plates by means of high-temperature pressing. In the actual production of some plates, the powder materials need to be first placed inside the die, and then the die is placed on the lifting table of the press. The lifting table presses the die tightly between the lifting table and the top plate, and the plate is formed at high temperature. After the plate is heated and formed, subsequent processing of the plate can only be carried out after the die is cooled. There is a door body on the press that can move up and down. During the heating process, the door body is closed to reduce heat dissipation, and during the cooling process, the door body is opened to accelerate the cooling rate. At present, most of the door bodies of presses are manually opened and closed by workers, which is inconvenient to use. On this basis, the method of driving the door body by a motor facilitates the use. Its specific structure is to set a cross bar higher than the frame at the top of the frame. A fixed pulley is connected to the cross bar, and a motor is connected to the top of the frame. The motor drives a roller to rotate. A steel wire rope is connected to the roller. After the steel wire rope is wound around the fixed pulley, it is connected to the door body. When the motor drives the roller to rotate, the steel wire rope is wound around the roller, causing the door body to rise. When the motor drives the roller to rotate in the reverse direction, the steel wire rope is released, and the door body descends under the action of its own gravity. In addition, in order to control the height when the door body is opened and closed, sensors are set on the frame. When the limit post on the door body touches the sensor, the motor stops, thereby controlling the height of the door body. The problem with the above structure is that when the door body rises to the open state, the door body is only lifted by the steel wire rope. Once the steel wire rope breaks, the falling of the door body may cause personal injury, posing a certain safety hazard. Content of the Utility Model
[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a door body limiting mechanism for a hot forming press to solve the technical problem of potential safety hazards caused by the possible falling of the door body when the door body rises to the open state in the prior art.
[0004] To solve the above technical problems, the present utility model provides a door body limiting mechanism for a thermoforming press, which includes a frame, a door body, a driving assembly, an upper limit post, an upper limit sensor, a limiting shaft, an electric push rod, and a limiting pin. The door body is vertically movably connected to the front end face of the frame. The driving assembly is connected to the frame and drives the door body to move upward through a steel wire rope. The upper limit post is connected to the front end face of the door body. The upper limit sensor is connected to the front end face of the frame and is located on the moving path of the upward movement of the upper limit post. The limiting shaft is horizontally connected to the front end face of the door body. A limiting hole penetrating in the front-rear direction is provided on the side wall of one end of the limiting shaft. The electric push rod is connected to the left end face or the right end face of the frame. The electric push rod is connected to the limiting pin and drives the limiting pin to move back and forth. The driving assembly, the electric push rod, and the upper limit sensor are electrically connected. When the upper limit post contacts the upper limit sensor, the electric push rod drives the limiting pin to extend into the limiting hole.
[0005] After adopting the above structure, the door body limiting mechanism for a thermoforming press of the present utility model has the following advantages: when the driving assembly drives the door body to rise until the upper limit post contacts the upper limit sensor, the upper limit sensor outputs a signal, and the driving assembly stops driving the door body to rise. At the same time, the upper limit sensor outputs a signal to the electric push rod, and the electric push rod drives the limiting pin to extend into the limiting hole to limit the door body. Even if the steel wire rope breaks, the door body is not likely to fall directly under the action of the limiting pin, improving safety. When the door body needs to descend, the electric push rod first drives the limiting pin to withdraw from the limiting hole, and then the driving assembly drives the door body to descend.
[0006] As an improvement, an electric push rod is connected to both the left end face and the right end face of the frame. Each electric push rod is connected to a limiting pin. Limiting holes for the limiting pins to extend into are provided on the side walls at both ends of the limiting shaft. With this structure, the limiting effect of the limiting pin on the door body is further improved, enhancing safety.
[0007] As an improvement, the inner diameter of the limiting hole is larger than the outer diameter of the limiting pin. When the limiting pin extends into the limiting hole, an annular gap is provided between the outer wall and the inner wall of the limiting pin. With this structure, in the normal upward opening state of the door body, the limiting pin does not contact the limiting shaft. Therefore, neither the limiting pin nor the electric push rod is subjected to radial loads, extending the service life of the electric push rod.
[0008] As an improvement, a lower limit post is connected to the front end face of the door body below the upper limit post. A lower limit sensor is connected to the front end face of the frame below the upper limit sensor. The lower limit sensor is located on the moving path of the downward movement of the lower limit post. The driving assembly is electrically connected to the lower limit sensor. With this structure, when the door body descends and the lower limit post contacts the lower limit sensor, the driving assembly stops and the door body stops descending.
[0009] As an improvement, a chute is provided on the front end face of the door body and arranged vertically. The upper limit post and the lower limit post are respectively connected to the chute through a slider in a sliding manner. A first long hole is provided on the side wall of the door body, which is communicated with the chute and arranged vertically. The fixing bolt is threadedly connected to the slider through the first long hole. With this structure, the first long hole enables the height of the upper limit post and the lower limit post to be adjustable. By respectively adjusting the height positions of the upper limit post and the lower limit post vertically, the height when the door body is opened and closed can be adjusted respectively, and the applicability is stronger.
[0010] As an improvement, a mounting plate is connected to the front end face of the door body, and the limit shaft is connected to the mounting plate. A number of second long holes are provided on the mounting plate and arranged vertically. The fixing bolt is threadedly connected to the door body through the second long holes. With this structure, the arrangement of the second long holes enables the height of the mounting plate and the limit shaft to be adjustable, ensuring that the limit pin can be aligned with the limit hole when the door body stops rising.
[0011] As an improvement, two left and right connecting plates are connected to the front end face of the frame, and the left and right ends of the door body are respectively slidably connected to the two connecting plates. Description of the Drawings
[0012] Figure 1 It is a schematic structural diagram of the door body of the present utility model in the closed state.
[0013] Figure 2 It is a schematic structural diagram of the door body of the present utility model in the opened state.
[0014] Figure 3 It is a cross-sectional view of the door body part of the present utility model.
[0015] Reference numerals: 1, frame; 2, door body; 3, drive assembly; 4, upper limit post; 5, upper limit sensor; 6, limit shaft; 7, electric push rod; 8, limit pin; 9, steel wire rope; 10, limit hole; 11, lower limit post; 12, lower limit sensor; 13, chute; 14, slider; 15, first long hole; 16, mounting plate; 17, second long hole; 18, connecting plate. Detailed Description of the Invention
[0016] The following will describe in detail a door body limit mechanism of a thermoforming press of the present utility model with reference to the drawings.
[0017] As shown in Figures 1 to 3 a door body limit mechanism of a thermoforming press includes a frame 1, a door body 2, a drive assembly 3, an upper limit post 4, an upper limit sensor 5, a limit shaft 6, an electric push rod 7, and a limit pin 8. The door body 2 is movably connected to the front end face of the frame 1 in the vertical direction. Specifically, two left and right connecting plates 18 are connected to the front end face of the frame 1, and the two connecting plates 18 are distributed on the left and right sides of the opening on the front end face of the frame 1. The left and right ends of the door body 2 are respectively slidably connected to the two connecting plates 18.
[0018] As shown Figure 1 in FIG. 1, the driving assembly 3 is connected to the frame 1 and drives the door body 2 to move upward through the steel wire rope 9. The upper limit post 4 is connected to the front end face of the door body 2, and the upper limit sensor 5 is connected to the front end face of the frame 1 and is located on the moving path of the upward movement of the upper limit post 4. In addition, a lower limit post 11 is connected to the front end face of the door body 2 below the upper limit post 4, and a lower limit sensor 12 is connected to the front end face of the frame 1 below the upper limit sensor 5. The lower limit sensor 12 is located on the moving path of the downward movement of the lower limit post 11. The driving assembly 3 is electrically connected to the lower limit sensor 12. Among them, both the upper limit sensor 5 and the lower limit sensor 12 are arranged on the right connecting plate 18.
[0019] As shown Figure 3 in FIG. 2, a vertically arranged sliding groove 13 is provided on the front end face of the door body 2. The upper limit post 4 and the lower limit post 11 are respectively slidably connected to the sliding groove 13 through a slider 14. A first long hole 15 communicating with the sliding groove 13 and arranged vertically is provided on the side wall of the door body 2. The fixing bolt is threadedly connected to the slider 14 through the first long hole 15. In this embodiment, the two sliding grooves 13 corresponding to the upper limit post 4 and the lower limit post 11 are independent of each other. Correspondingly, the first long holes 15 are also independent of each other. In some other embodiments, the two sliding grooves 13 can be communicated with each other into one, and the two first long holes 15 can also be communicated with each other into one.
[0020] As shown Figure 1 and Figure 2 in FIGS. 3 and 4, the limiting shaft 6 is horizontally connected to the front end face of the door body 2. Both the left and right ends of the limiting shaft 6 extend beyond the frame 1, specifically beyond the left and right connecting plates 18. A limiting hole 10 penetrating in the front-rear direction is provided on the side wall of one end of the limiting shaft 6. The electric push rod 7 is connected to the left end face or the right end face of the frame 1. The electric push rod 7 is connected to the limiting pin 8 and drives the limiting pin 8 to move back and forth. Specifically, an electric push rod 7 is connected to both the left end face and the right end face of the frame 1. Each electric push rod 7 is connected to a limiting pin 8. Limiting holes 10 for the limiting pin 8 to extend into are provided on the side walls of both ends of the limiting shaft 6. The driving assembly 3, the electric push rod 7 and the upper limit sensor 5 are electrically connected. When the upper limit post 4 contacts the upper limit sensor 5, the limiting pin 8 is aligned with the limiting hole 10, and the electric push rod 7 drives the limiting pin 8 to extend into the limiting hole 10. In addition, the inner diameter of the limiting hole 10 is larger than the outer diameter of the limiting pin 8. When the limiting pin 8 extends into the limiting hole 10, an annular gap is provided between the outer wall and the inner wall of the limiting pin 8. In this embodiment, the cross-sections of both the limiting pin 8 and the limiting hole 10 are circular. When they are aligned, it is preferably coaxially arranged, and the limiting shaft 6 is located between the upper limit post 4 and the lower limit post 11.
[0021] As shown Figure 1 and Figure 2As shown, an installation plate 16 is connected to the front end face of the door body 2, and the limiting shaft 6 is connected to the installation plate 16. A number of second long holes 17 arranged vertically are provided on the installation plate 16, and fixing bolts are threadedly connected to the door body 2 through the second long holes 17. In this embodiment, the installation plate 16 and the limiting shaft 6 are welded together. There are a total of four second long holes 17, which are distributed in a matrix on the installation plate 16.
[0022] When the driving assembly 3 drives the door body 2 to rise until the upper limit post 4 contacts the upper limit sensor 5, the upper limit sensor 5 outputs a signal, and the driving assembly 3 stops driving the door body 2 to rise. At the same time, the upper limit sensor 5 outputs a signal to the electric push rod 7, and the electric push rod 7 drives the limit pin 8 to extend into the limit hole 10 to limit the door body 2. Even if the steel wire rope 9 breaks, the door body 2 is not easily directly dropped under the action of the limit pin 8, improving safety. When the door body 2 needs to descend, the electric push rod 7 first drives the limit pin 8 to withdraw from the limit hole 10, and then the driving assembly 3 drives the door body 2 to descend.
[0023] The above has described in detail the embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention is not limited to the above-mentioned one embodiment. All other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present invention.
Claims
1. A thermoforming press door limiting mechanism, characterized in that: The invention comprises a frame (1), a door body (2), a driving assembly (3), an upper limit post (4), an upper limit sensor (5), a limit shaft (6), an electric push rod (7) and a limit pin (8), wherein the door body (2) is vertically movably connected to the front end surface of the frame (1), the driving assembly (3) is connected to the frame (1) and drives the door body (2) to move upwards via a steel wire rope (9), the upper limit post (4) is connected to the front end surface of the door body (2), the upper limit sensor (5) is connected to the front end surface of the frame (1) and is located on the upward movement path of the upper limit post (4), and the limit shaft ( 6) is horizontally connected to the front end face of the door body (2), a limit hole (10) is provided on the side wall of one end of the limit shaft (6) and is penetrated in the front-to-back direction, the electric push rod (7) is connected to the left end face or the right end face of the frame (1), the electric push rod (7) is connected to the limit pin (8) and drives the limit pin (8) to move forward and backward, the drive assembly (3), the electric push rod (7) and the upper limit sensor (5) are electrically connected, and when the upper limit column (4) contacts the upper limit sensor (5), the electric push rod (7) drives the limit pin (8) to extend into the limit hole (10).
2. The thermoforming press door limiting mechanism according to claim 1, characterized in that: The left end face and the right end face of the frame (1) are both connected to an electric push rod (7), each of the electric push rods (7) is connected to a limit pin (8), and the side walls at both ends of the limit shaft (6) are each provided with a limit hole (10) for the limit pin (8) to extend into.
3. The thermoforming press door limiting mechanism according to claim 1, characterized in that: The inner diameter of the limiting hole (10) is greater than the outer diameter of the limiting pin (8); when the limiting pin (8) extends into the limiting hole (10), an annular gap is provided between the outer wall of the limiting pin (8) and the inner wall of the limiting pin (8).
4. The thermoforming press door limiting mechanism according to claim 1, characterized in that: The front end surface of the door body (2) is connected to a lower limit post (11) located below the upper limit post (4), the front end surface of the frame (1) is connected to a lower limit sensor (12) located below the upper limit sensor (5), the lower limit sensor (12) is located on a moving path of the lower limit post (11) moving downward, and the drive assembly (3) is electrically connected to the lower limit sensor (12).
5. The thermoforming press door limiting mechanism according to claim 4, characterized in that: The front end surface of the door body (2) is provided with a vertically arranged slide groove (13); the upper limit column (4) and the lower limit column (11) are slidably connected in the slide groove (13) via a slider (14) respectively; a first long hole (15) connected to the slide groove (13) and arranged vertically is provided on the side wall of the door body (2); a fixing bolt is threadedly connected to the slider (14) via the first long hole (15).
6. The thermoforming press door limiting mechanism according to claim 1 or 5, characterized in that: The front end surface of the door body (2) is connected to a mounting plate (16), the limiting shaft (6) is connected to the mounting plate (16), and the mounting plate (16) is provided with a plurality of second long holes (17) arranged vertically, and fixing bolts are threadedly connected to the door body (2) through the second long holes (17).
7. The thermoforming press door limiting mechanism according to claim 1, characterized in that: The front end surface of the frame (1) is connected to two left and right connecting plates (18), and the left and right ends of the door body (2) are respectively slidably connected to the two connecting plates (18).