Safety device for die fitting machine

Abstract

The utility model relates to the technical field of brick making, and particularly discloses a safety device for a mold matching machine, which comprises a cylinder seat fixedly mounted on a frame of the mold matching machine, a cylinder hinged on the cylinder seat, a movable hook hinged at the tail end of a piston rod of the cylinder, and a tooth-shaped plate with multiple stages of tooth-shaped grooves up and down, the movable hook is movably connected to the air cylinder base, the tooth-shaped plate ascends and descends in the machine frame of the die matching machine, and when the air cylinder is in the releasing working state, the hook head of the movable hook leaves the tooth-shaped plate and when the air cylinder is in the locking working state, the hook head of the movable hook abuts against one tooth-shaped groove of the tooth-shaped plate. When the pressing frame stops, the starting air cylinder is in a constant ventilation state, the movable hook moves towards the tooth-shaped plate and enters the tooth-shaped groove to lock the tooth-shaped plate and keep the position, the pressing frame can be prevented from falling off due to breakage of a lifting hook hoist or a chain, and the safety protection effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of brick making, in particular to a safety device for a mold matching machine. Background Art

[0002] When making blocks, bricks are generally pressed and vibrated on a block forming machine using a brick-making mold. The brick-making mold includes a pressure head and a mold frame. Aggregates and fabrics are first placed in the mold frame, and then the pressure head descends into the mold frame to press the aggregates or fabrics inside. If the mold frame does not match the pressure head, it will cause the mold to get stuck or scraped during the pressing process, affecting the production efficiency and quality of the blocks. Therefore, before the brick-making mold is put into production, it is generally necessary to match the mold first to find a combination mold of a pressure head and a mold frame that matches each other and will not get stuck. When matching the mold, in order to maintain the position of the pressure head when it stops and to prevent the pressure head from accidentally falling and causing a safety accident, it is necessary to design a safety device to achieve safety protection at any position and prevent the pressure head from continuing to fall after it falls off. Utility Model Content

[0003] The utility model aims to provide a safety device for a mold matching machine, which can realize safety protection at any position and prevent the pressure head from continuing to fall after falling off.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A safety device for a mold matching machine comprises a cylinder seat fixedly mounted on a mold matching machine frame, a cylinder hingedly mounted on the cylinder seat, a movable hook hingedly mounted on the end of a cylinder piston rod, and a toothed plate with upper and lower multi-stage toothed grooves, wherein the movable hook is movably connected to the cylinder seat, and the toothed plate is raised and lowered in the mold matching machine frame, and the hook head of the movable hook leaves the toothed plate when the cylinder is in a released working state, and the hook head of the movable hook abuts against a toothed groove of the toothed plate when the cylinder is in a locked working state.

[0006] Preferably, the mold matching machine is provided with at least two sets of safety devices, and the cylinders of the safety devices act synchronously.

[0007] Preferably, the safety device further comprises a cylinder sensing switch for detecting the position of the cylinder.

[0008] Preferably, the cylinder seat includes two seat plates, a top plate and a positioning shaft, one end of the seat plate is locked and fixed to the frame through a fixing plate, the positioning shaft is horizontally arranged between the two seat plates, the movable hook is installed on the positioning shaft and the movable hook rotates up and down with the long axis of the positioning shaft as the center axis.

[0009] Preferably, a reinforcement plate is connected between the seat plate and the frame.

[0010] Preferably, the left end of the movable hook is hinged to the end of the piston rod, the right end of the movable hook is provided with the hook head, the middle part of the movable hook is provided with a rotating hole, the positioning shaft is horizontally passed through the rotating hole and the two ends of the positioning shaft are fixed on two seat plates.

[0011] Preferably, a sleeve is fixedly installed in the rotating hole.

[0012] Preferably, the tooth-shaped groove is in a right-angled trapezoidal structure, the upper side wall of the tooth-shaped groove is a right-angled side and the lower side wall is a downwardly inclined hypotenuse, and the opening height of the tooth-shaped groove is greater than the bottom wall height of the tooth-shaped groove.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model safety device comprises a cylinder, a movable hook and a toothed plate. The toothed plate rises and falls with the pressing frame. When the pressing frame stops, the cylinder is started in a normal ventilation state, so that the movable hook moves toward the toothed plate and enters the toothed groove to lock the toothed plate and maintain the position. It can also prevent the pressing frame from falling due to the breakage of the electric hoist or chain, thus playing a role of safety protection. Since the stopping position of the pressing frame is random, the hook head may not enter the toothed groove completely at this time, but when the pressing frame slides downward, the cylinder in the normal ventilation state will make the movable hook continue to rotate until the hook head completely enters the toothed groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a top view of the safety device of the utility model in the application state of the mold matching machine.

[0016] Figure 2 for Figure 1 BB cross section shown in .

[0017] Figure 3 for Figure 2 A partial enlarged view of part A is shown in FIG.

[0018] Figure 4 for Figure 1 DD cross-section shown in .

[0019] Figure 5 for Figure 4 A partial enlarged view of part B is shown in FIG.

[0020] Markings in the figure: 101, frame; 102, pressure frame; 10, cylinder; 20, cylinder seat; 21, seat plate; 22, top plate; 23, positioning shaft; 24, fixed plate; 25, reinforcement plate; 30, movable hook; 40, toothed plate; 41, toothed groove. DETAILED DESCRIPTION

[0021] In order to make the above features and advantages of the present invention more obvious and understandable, embodiments are given below with reference to the accompanying drawings for detailed description as follows.

[0022] like Figure 1-Figure 5 As shown, this embodiment provides a safety device for a mold matching machine, which is applied to the mold matching machine. The mold matching machine includes a frame 101 and a pressing frame 102 that is lifted and slidably arranged in the frame 101, and the pressing frame 102 is used to install a pressing head. In order to enhance safety, the mold matching machine is provided with two sets of safety devices, and the cylinders 10 of the two sets of safety devices act synchronously. The control technology for the synchronous action of the two cylinders 10 is a conventional technology, such as using a pneumatic solenoid valve to control the air intake and exhaust of the cylinder.

[0023] The safety device of this embodiment includes a cylinder seat 20 fixedly mounted on a mold matching machine frame 101, a cylinder 10 hingedly mounted on the cylinder seat 20, a movable hook 30 hingedly mounted on the end of the piston rod of the cylinder 10, and a toothed plate 40 having upper and lower multi-stage toothed grooves 41. The movable hook 30 is movably connected to the cylinder seat 20, and the toothed plate 40 is fixedly mounted on the press frame 102 to achieve lifting and lowering in the mold matching machine frame 101. When the cylinder 10 is in a released working state, the hook head of the movable hook 30 leaves the toothed plate 40, and when the cylinder 10 is in a locked working state, the hook head of the movable hook 30 is against a toothed groove 41 of the toothed plate 40.

[0024] The cylinder seat 20 of this embodiment includes two seat plates 21, a top plate 22 and a positioning shaft 23. The positioning shaft 23 is horizontally arranged between the two seat plates 21. One end of the seat plate 21 is locked and fixed to the frame 101 through a fixing plate 24, and a reinforcing plate 25 is also connected between the seat plate 21 and the frame 101 to enhance the structural stability of the seat plate 21.

[0025] In this embodiment, the left end of the movable hook 30 is hinged to the end of the piston rod, the right end of the movable hook 30 is provided with the hook head, and the middle part of the movable hook 30 is provided with a rotating hole, the positioning shaft 23 is horizontally penetrated through the rotating hole and the two ends of the positioning shaft 23 are fixedly arranged on the two seat plates 21, so that the movable hook 30 is installed on the positioning shaft 23 and the movable hook 30 rotates up and down with the long axis of the positioning shaft 23 as the center axis. In this way, when the piston rod of the cylinder 10 is shortened, the movable hook 30 can be driven to rotate around the positioning shaft 23 and then the hook head can be moved away from the toothed plate 40, and when the piston rod of the cylinder 10 is extended, the movable hook 30 can be driven to rotate around the positioning shaft 23 and then the hook head can be moved toward the toothed plate 40. Since the stop position of the pressing frame 102 is random, the hook head may not completely enter the toothed groove 41 at this time, but when the pressing frame 102 slides downward, the cylinder 10 in the normal ventilation state will make the movable hook 30 continue to rotate until the hook head completely enters the toothed groove 41, and the toothed plate 40 is locked at this time, thereby locking the pressing frame 102. If the work is completed and the pressing frame 102 needs to be further raised or lowered, the pneumatic solenoid valve is switched at this time to make the cylinder 10 move in the reverse direction, and the movable hook 30 leaves the toothed groove 41.

[0026] Preferably, a sleeve is fixed in the rotating hole, and the positioning shaft 23 is inserted into the sleeve.

[0027] In order to facilitate the hook head to enter the toothed groove 41 from bottom to top and to better support the toothed plate 40, the toothed groove 41 of this embodiment is a right-angled trapezoidal structure, the upper side wall of the toothed groove 41 is a right-angled side and the lower side wall is a downwardly inclined hypotenuse, and the opening height of the toothed groove 41 is greater than the bottom wall height of the toothed groove 41. The inclination angle of the hypotenuse is set according to the rotation path of the hook head, so that it can smoothly enter the toothed groove 41 and can smoothly leave the toothed groove 41 in the reverse direction.

[0028] Furthermore, in order to reflect whether the movable hook 30 is fully opened, the safety device of this embodiment also includes a cylinder induction switch for detecting the position of the cylinder 10. The model is preferably AIRTAC CMSG-020. The cylinder induction switch is used to detect the position of the cylinder 10 and the indicator light is lit after it is fully opened. After confirming that the movable hook 30 is fully opened, the lifting of the pressure frame 102 is controlled to avoid damage to the equipment due to the lifting of the pressure frame 102 when the movable hook 30 is not fully opened. The lifting control of the pressure frame 102 can be an electric hoist.

[0029] The above shows and describes the basic principles, main features and advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the invention. Without departing from the spirit and scope of the invention, the invention may have various changes and improvements, which shall fall within the scope of the invention to be protected. The scope of protection of the invention shall be defined by the attached claims and their equivalents.

Claims

1. A safety device for a mold matching machine, characterized in that: It includes a cylinder seat fixedly mounted on a mold matching machine frame, a cylinder hingedly mounted on the cylinder seat, a movable hook hingedly mounted on the end of a cylinder piston rod, and a toothed plate with upper and lower multi-stage toothed grooves. The movable hook is movably connected to the cylinder seat, and the toothed plate is lifted and lowered in the mold matching machine frame. When the cylinder is in a released working state, the hook head of the movable hook leaves the toothed plate, and when the cylinder is in a locked working state, the hook head of the movable hook rests against a toothed groove of the toothed plate.

2. The safety device for a mold matching machine according to claim 1, characterized in that: The mold matching machine is provided with at least two sets of safety devices, and the cylinders of the safety devices act synchronously.

3. The safety device for a mold matching machine according to claim 1, characterized in that: The safety device also includes a cylinder sensing switch for detecting the position of the cylinder.

4. The safety device for a mold matching machine according to claim 1, characterized in that: The cylinder seat includes two seat plates, a top plate and a positioning shaft. One end of the seat plate is locked and fixed to the frame through a fixing plate. The positioning shaft is horizontally arranged between the two seat plates. The movable hook is installed on the positioning shaft and the movable hook rotates up and down with the long axis of the positioning shaft as the center axis.

5. The safety device for a mold matching machine according to claim 4, characterized in that: A reinforcing plate is also connected between the seat plate and the frame.

6. The safety device for a mold matching machine according to claim 4, characterized in that: The left end of the movable hook is hinged with the end of the piston rod, the right end of the movable hook is provided with the hook head, the middle part of the movable hook is provided with a rotating hole, the positioning shaft is horizontally penetrated through the rotating hole and the two ends of the positioning shaft are fixedly arranged on two seat plates.

7. The safety device for a mold matching machine according to claim 6, characterized in that: A sleeve is fixedly installed in the rotating hole.

8. The safety device for a mold matching machine according to claim 1, characterized in that: The tooth-shaped groove is in a right-angled trapezoidal structure, the upper side wall of the tooth-shaped groove is a right-angled side and the lower side wall is a downwardly inclined hypotenuse, and the opening height of the tooth-shaped groove is greater than the bottom wall height of the tooth-shaped groove.

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