Forging press with safety door
By designing a multi-layered door structure and an electric hoist-driven safety door, the problems of insufficient safety door protection and insufficient ground clearance of machine tools have been solved, resulting in a forging press machine tool that is both highly safe and easy to use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG METAL FORMING MACHINE WORKS
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-09
AI Technical Summary
Existing machine tool safety doors cannot provide comprehensive protection in limited spaces, and their height from the ground after opening is insufficient, posing safety hazards and causing inconvenience in use.
Design a safety door consisting of at least two layers of doors. When the bottom layer of doors is raised by an electric hoist, the lifting plate lifts the other layers of doors and folds them inside, realizing the inward and outward folding of the multi-layered doors. The guide rails and limit blocks ensure the smooth lifting and lowering of the doors and their positioning. A fall arrestor is provided for protection.
The large-stroke safety door provides comprehensive protection within a limited space and offers sufficient height from the ground for operators to easily enter the machine, thus improving safety and ease of use.
Smart Images
Figure CN224333355U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of machine tools, and in particular to a forging press with a safety door. Background Technology
[0002] Existing machine tools have individual lifting safety doors on both the front and rear sides. However, these safety doors either fail to provide comprehensive protection or are not high enough off the ground when open. For example... Figure 1 As shown, both existing machine tools and the machine tool of this invention have a maintenance platform 7 on the rear side. However, because the height and size of the maintenance platform 7 on the machine tool are fixed, it restricts the size of the safety door, thus limiting its size and travel range. Therefore, a single safety door can only provide partial protection within a limited space, not comprehensive protection. For example, even when the safety door of an existing machine tool is closed, it does not completely seal the doorway, allowing workers to still crouch down and crawl into the machine tool, posing a safety hazard. Furthermore, when the existing safety door is raised, its height is too low, requiring a person to slightly crouch or tilt their head to enter the machine tool, making it inconvenient to use. Therefore, current machine tools still have safety hazards and inconvenience issues, and their structure needs further improvement. Utility Model Content
[0003] The purpose of this invention is to provide a forging press with a safety door that is easy to use and highly safe.
[0004] The purpose of this utility model is achieved as follows:
[0005] A forging press with a safety door includes a machine tool and a safety door. Two columns are provided on one side of the machine tool, and the safety door is slidably disposed between the two columns. The safety door is composed of at least two layers of door bodies arranged sequentially from top to bottom, with the inner and outer layers of the at least two layers of door bodies staggered. At least one lifting plate is provided on the bottom layer of door body, and the lifting plate is located below the other layers of door bodies. An electric hoist is provided on the machine tool, and the lower end of the steel cable of the electric hoist is connected to the bottom layer of door body. When the electric hoist drives the bottom layer of door body to rise, the lifting plate will lift the other layers of door bodies to rise and fold them inside the bottom layer of door body. When the electric hoist drives the bottom layer of door body to descend, the other layers of door bodies descend and unfold above the bottom layer of door body. The safety door of this utility model consists of at least two door bodies arranged from top to bottom. All door bodies can be folded together inside and out. After all door bodies are lowered and unfolded, they can completely close the machine tool doorway. After all door bodies are raised and folded, the height of the door body from the ground is sufficient for the operator to enter the machine to operate. Therefore, this utility model can make a large-stroke safety door within a limited space, which can not only meet the requirements of comprehensive protection, but also have sufficient height from the ground after the door is opened to allow the operator to enter the machine to operate.
[0006] The present invention can be further improved in the following ways.
[0007] The bottom layer of the door is provided with multiple lifting plates spaced at intervals along its horizontal direction.
[0008] The lifting plate is located at the bottom edge of the lowest door.
[0009] One end of the lifting plate is fixedly connected to the bottom edge of the lowest door, and the other end of the lifting plate extends into the machine tool. The length of the lifting plate is sufficient to lift all the doors, so that the lifting plate can lift other doors and fold them inside the lowest door.
[0010] The sides of the pillars are equipped with guide rails corresponding to both ends of the door. The two ends of the door slide up and down on the guide rails, making the raising and lowering of the security door smoother.
[0011] Rollers are installed at both ends of the door. The rollers cooperate with the guide rail for vertical guidance. The rollers roll along the guide rail, making the raising and lowering of the safety door smoother.
[0012] The door is equipped with glass windows, allowing workers to easily observe the machine tool's operation.
[0013] The side of the column is equipped with a lower limit block corresponding to the bottom of each door. The lower limit block is located below the corresponding door. When the door is opened downwards, the bottom of the door abuts against the corresponding lower limit block. The limit block supports the door and can effectively limit the descent position of each door. Multiple doors work together to close the doorway of the machine tool.
[0014] The lower limit block is located at the lower end of the guide rail.
[0015] A lower position sensor is installed on the side of the column corresponding to the bottom layer of the door, and an upper position sensor is installed on the side of the column corresponding to the bottom layer of the door. The upper position sensor is located above the lower position sensor. After the door is in position, the upper and lower position sensors will send signals to the machine tool controller so that the machine tool can automatically perform the next operation, thereby realizing the automation and informatization of machine tool control.
[0016] The machine tool is equipped with a fall arrestor located above the safety door. The lower end of the fall arrestor's rope is connected to the lowest level of the door. A fall arrestor, also called a differential brake, is a protective device. It can quickly brake and lock falling objects within a limited distance, making it suitable for hoisting objects and protecting the lives of ground personnel while preventing damage to the suspended objects. Fall arrestors are existing technology, and their structure and working principle will not be described in detail here.
[0017] The beneficial effects of this utility model are as follows:
[0018] The safety door of this utility model consists of at least two door bodies arranged from top to bottom. All door bodies can be folded together inside and out. After all door bodies are lowered and unfolded, they can completely close the machine tool doorway. After all door bodies are raised and folded, the height of the door body from the ground is sufficient for the operator to enter the machine to operate. Therefore, this utility model can make a large-stroke safety door within a limited space, which can not only meet the requirements of comprehensive protection, but also have sufficient height from the ground after the door is opened to allow the operator to enter the machine to operate. Attached Figure Description
[0019] Figure 1 This is a structural schematic diagram of the forging press with a safety door (the safety door is in the closed state) according to this utility model.
[0020] Figure 2 This is a structural schematic diagram of the forging press with safety door of this utility model from another angle.
[0021] Figure 3 This is a top view of the forging press with safety door of this utility model.
[0022] Figure 4 yes Figure 3 Sectional view at point AA.
[0023] Figure 5 This is a schematic diagram of the structure of the machine tool with a safety door, omitting the safety door, electric hoist, and baffle.
[0024] Figure 6 This is a schematic diagram of the structure of the machine tool with a safety door, omitting the safety door, electric hoist, and baffle from another angle.
[0025] Figure 7 This is a schematic diagram of the machine tool after the safety door of this utility model is folded.
[0026] Figure 8 This is a cross-sectional view of the machine tool with the safety door folded after this utility model is invented.
[0027] Figure 9 This is an exploded view of the forging press with a safety door according to this utility model.
[0028] Figure 10 This is a structural schematic diagram of the bottom layer of the door body of this utility model.
[0029] Figure 11 This is a structural schematic diagram of the door body of this utility model. Detailed Implementation
[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0031] Example 1, as Figures 1 to 11As shown, a machine tool 1 with a safety door 2 includes a machine tool 1 and a safety door 2. Two columns 3 are provided on one side of the machine tool 1. The safety door 2 is slidably disposed between the two columns 3. The safety door 2 is composed of at least two layers of door bodies 21 arranged from top to bottom. The at least two layers of door bodies 21 are staggered inside and out. At least one lifting plate 23 is provided on the bottom layer of door body 21. The lifting plate 23 is located below the other layers of door bodies 21. An electric hoist 4 is provided on the machine tool 1. The lower end of the steel rope 41 of the electric hoist 4 is connected to the bottom layer of door body 21. When the electric hoist 4 drives the bottom layer of door body 21 to rise, the lifting plate 23 will lift the other layers of door bodies 21 to rise and fold inside the bottom layer of door body 21. When the electric hoist 4 drives the bottom layer of door body 21 to fall, the other layers of door bodies 21 fall and unfold above the bottom layer of door body 21. The safety door of this utility model consists of at least two layers of door panels arranged from top to bottom. All door panels can be folded together, both inwards and outwards. When all door panels are lowered and unfolded, they can completely close the machine tool doorway. When all door panels are raised and folded, the height of the door panels above the ground is sufficient for the operator to enter the machine. Therefore, this utility model can create a large-stroke safety door within a limited space, meeting comprehensive protection requirements while providing sufficient height above the ground for the operator to enter the machine. The machine tool of this utility model has a maintenance platform 7 and a baffle 6 on its rear side. The baffle 6 is located below the maintenance platform, and all door panels are folded inside the baffle 6.
[0032] This is a more specific technical solution of the present invention.
[0033] The bottom layer of the door 21 is provided with multiple lifting plates 23 at intervals along its horizontal direction.
[0034] The lifting plate 23 is located at the bottom edge of the lowest door 21.
[0035] One end of the lifting plate 23 is fixedly connected to the bottom edge of the lowest door 21, and the other end of the lifting plate 23 extends into the machine tool 1. The length of the lifting plate 23 is sufficient to lift all the doors 21, so that the lifting plate 23 can lift other doors 21 and fold them inside the lowest door 21.
[0036] The side of the column 3 is provided with guide rails 31 corresponding to both ends of the door body 21. The two ends of the door body 21 are slidably mounted on the guide rails 31, so that the safety door 2 can be raised and lowered more smoothly.
[0037] Rollers 25 are installed at both ends of the door body 21. The rollers 25 are guided and cooperate with the guide rail 31. The rollers 25 roll along the guide rail 31, making the lifting and lowering of the safety door 2 smoother.
[0038] A glass window 22 is provided on the door 21 to facilitate workers to observe the working status of the machine tool 1.
[0039] The side of the column 3 is provided with a lower limit block 33 corresponding to the bottom of each door 21. The lower limit block 33 is located below the corresponding door 21. When the door 21 is unfolded downward, the bottom of the door 21 abuts against the corresponding lower limit block 33. The lower limit block supports the door. The steel rope limit block can effectively limit the descent position of each door 21. The multiple door 21 cooperate to close the door of the machine tool 1.
[0040] The side of the column 3 is provided with an upper limit block 32 corresponding to the top of each door 21. The upper limit block 32 is located above the corresponding door 21 and prevents the door 21 from rising further.
[0041] The lower limit block 33 is located at the lower end of the guide rail 31.
[0042] A lower position sensor 34 is provided on the side of the column 3 corresponding to the bottom layer of the door 21, and an upper position sensor 35 is provided on the side of the column 3 corresponding to the bottom layer of the door 21. The upper position sensor 35 is located above the lower position sensor 34. After the door 21 is in position, the upper position sensor 35 and the lower position sensor 34 will send a signal to the controller of the machine tool 1 so that the machine tool 1 can automatically perform the next operation, thereby realizing the automation and informatization of the control of the machine tool 1.
[0043] Machine tool 1 is equipped with a fall arrestor 5, located above safety door 2. The lower end of the rope 51 of the fall arrestor 5 is connected to the lowest door panel 21. The fall arrestor 5, also called a speed differential device, is a protective product. It can quickly brake and lock falling objects within a limited distance, suitable for hoisting objects, protecting the lives of ground operators and preventing damage to the hoisted objects. The fall arrestor 5 is existing technology, and its structure and working principle will not be described in detail here.
[0044] The working principle of this utility model is as follows:
[0045] When the electric hoist 4 retracts the steel rope 41 upwards, the fall arrestor also retracts the rope upwards. The steel rope 41 drives the bottom door 21 to rise. The lifting plate 23 of the bottom door 21 will successively lift the other doors 21 upwards and fold them inside the bottom door 21. The door of the machine tool is opened. When the top of each door abuts against the corresponding upper limit block, the corresponding door stops rising. The upper position sensor 35 will send a signal to the controller of the machine tool 1, and the electric hoist 4 will stop retracting the steel rope 41 upwards.
[0046] When the electric hoist 4 lowers the steel rope 41, all the doors 21 begin to descend slowly due to gravity. The bottom door descends to its lowest position, and the other doors 21 also descend and unfold above the bottom door 21. When the bottom of each door is against the corresponding lower limit block, the lower limit block supports the corresponding door, and the corresponding door stops descending until all doors have descended and unfolded, and all doors close the doorway of the machine tool. The electric hoist 4 stops lowering the steel rope 41, and the fall arrestor stops releasing the rope.
Claims
1. A forging press with a safety door, comprising a machine tool (1) and a safety door (2), wherein two columns (3) are provided on one side of the machine tool (1), and the safety door (2) is slidably disposed between the two columns (3), characterized in that, The safety door (2) is composed of at least two layers of door bodies (21) arranged from top to bottom. The at least two layers of door bodies (21) are staggered inside and out. The bottom layer of door body (21) is provided with at least one lifting plate (23). The lifting plate (23) is located below the other layers of door bodies (21). The machine tool (1) is provided with an electric hoist (4). The lower end of the steel rope (41) of the electric hoist (4) is connected to the bottom layer of door body (21). When the electric hoist (4) drives the bottom layer of door body (21) to rise, the lifting plate (23) will lift the other layers of door bodies (21) to rise and fold inside the bottom layer of door body (21). When the electric hoist (4) drives the bottom layer of door body (21) to fall, the other layers of door bodies (21) fall and unfold above the bottom layer of door body (21).
2. The forging press with safety door according to claim 1, characterized in that, The lifting plate (23) is located at the bottom edge of the lowest door (21).
3. The forging press with a safety door according to claim 2, characterized in that, The bottommost door (21) has multiple lifting plates (23) spaced at intervals along its horizontal direction.
4. The forging press with a safety door according to claim 2, characterized in that, One end of the lifting plate (23) is fixedly connected to the bottom edge of the lowest door (21), and the other end of the lifting plate (23) extends into the machine tool (1).
5. The forging press with a safety door according to claim 1, characterized in that, The side of the column (3) is provided with guide rails (31) corresponding to both ends of the door body (21), and the two ends of the door body (21) are slidably mounted on the guide rails (31).
6. The forging press with a safety door according to claim 5, characterized in that, Rollers (25) are installed at both ends of the door body (21). The rollers (25) are guided and cooperated with the guide rail (31) from top to bottom. The rollers (25) roll along the guide rail (31) inside the guide rail (31). A glass window (22) is provided on the door body (21).
7. The forging press with a safety door according to claim 1, characterized in that, The side of the column (3) is provided with a lower limit block (33) corresponding to the bottom of each door (21). The lower limit block (33) is located below the corresponding door (21). When the door (21) is unfolded downward, the bottom of the door (21) abuts against the corresponding lower limit block (33).
8. The forging press with a safety door according to claim 7, characterized in that, The lower limit block (33) is located at the lower end of the guide rail (31).
9. The forging press with a safety door according to claim 1, characterized in that, A lower position sensor (34) is provided on the side of the column (3) corresponding to the bottom layer of the door (21), and an upper position sensor (35) is provided on the side of the column (3) corresponding to the bottom layer of the door (21). The upper position sensor (35) is located above the lower position sensor (34).
10. The forging press with a safety door according to claim 1, characterized in that, The machine tool (1) is equipped with a fall arrestor (5), which is located above the safety door (2). The lower end of the rope (51) of the fall arrestor (5) is connected to the bottom door (21).