Positioning tool for fireproof door polishing

Abstract

A positioning tool for fireproof door polishing comprises a workbench and a clamping mechanism, two cavities are symmetrically formed in the workbench, two sets of guide grooves communicating with the cavities are symmetrically formed in the two sides of the upper surface of the workbench, each set of guide grooves comprises two guide grooves, and the clamping mechanism is composed of a movable plate, a clamping head, a two-way threaded rod and a motor. Two positioning plates are installed in the middles of the two sides of the workbench respectively, the two movable plates are movably arranged in the two cavities respectively and are in threaded connection with the two-way threaded rod, two movable columns are symmetrically arranged in the outer side faces of the movable plates, the movable columns are located under the guide grooves, and the clamping heads are in a U shape and are in threaded connection with the interiors of the movable columns. The clamping head is connected with the guide groove in a sliding mode, the height of the clamping head is matched with the thickness of a door plate to be machined, and the two-way threaded rod is rotationally arranged in the two cavities in a penetrating mode. The clamp has the advantages of being stable in clamping, convenient to carry, long in service life and the like.

Description

Technical Field

[0001] This utility model relates to the field of fire door manufacturing and processing technology, and in particular to a positioning fixture for fire door grinding. Background Technology

[0002] During the production and processing of fireproof door panels, steps such as cutting, welding, grinding, and assembly are required. During the grinding process, the fireproof door panels need to be clamped and positioned. After positioning, the fireproof door panels will be more stable during processing and less prone to shaking.

[0003] For example, patent application number CN202220340314.6 discloses a grinding device for steel fire doors. This patent places the workpiece on a processing table 1, then starts a third motor 63 to drive the left-side bidirectional screw 53 to rotate. This rotation, via a pulley 61 and a first belt 62, drives the right-side bidirectional screw 53 to rotate. The rotation of the two bidirectional screws 53 causes the third slider 52 to slide within the third groove 51. The sliding of the third slider 52 causes the clamping plate 54 to clamp and fix the workpiece. Then, the first cylinder 21 is activated to push the fixing box 22 downwards, which in turn pushes the grinding wheel 26 downwards. The grinding wheel 26 contacts the workpiece, and then the first motor 24 is started to drive the rotating shaft 25 to rotate. The rotation of the rotating shaft 25 drives the grinding wheel 26 to grind the workpiece. Then the second motor 35 is started to drive the first screw 34 to rotate. The first screw 34 drives the first slider 33 to slide in the first slide groove 32. The first slider 33 drives the first cylinder 21 to move, and grinds the workpiece longitudinally. Then the second cylinder 44 is started to push the second slider 42 to slide in the second slide groove 41. The sliding of the second slider 42 can drive the grinding wheel 26 to grind the workpiece laterally, and thus grind the workpiece in all directions.

[0004] In existing fire door surface grinding tables, the fire door is positioned by clamping the fire door panel on both sides using two lateral clamps, which are located on the upper surface of the processing table. This positioning method has several drawbacks. First, the clamps interfere with the placement of the door panel; workers need to lift the door panel above the clamps before placing it on the processing table, causing inconvenience. Second, grinding debris falls directly onto the surface of the bidirectional threaded rod, affecting its stability and potentially damaging it, thus reducing its lifespan. Therefore, there is room for improvement. Utility Model Content

[0005] This invention provides a positioning fixture for grinding fire doors to solve the problems mentioned in the background art.

[0006] To address the aforementioned problems, this utility model provides a positioning fixture for grinding fire doors, comprising a worktable and a clamping mechanism. The worktable has two symmetrically arranged cavities. Two sets of guide grooves, each consisting of two grooves, are symmetrically arranged on both sides of the worktable's upper surface, connecting the cavities. The clamping mechanism comprises a movable plate, a clamping head, a bidirectional threaded rod, and a motor. A positioning plate is installed on the middle of each side of the worktable. Two movable plates are movably positioned within the two cavities and threadedly connected to the bidirectional threaded rod. Two movable columns are symmetrically arranged on the outer surface of the movable plates, located directly below the guide grooves. The clamping head is U-shaped and threadedly connected to the movable columns. The clamping head is slidably connected to the guide grooves, and its height matches the thickness of the door panel to be processed. The bidirectional threaded rod rotatably passes through the two cavities, with both ends rotatably connected to the positioning plates. One end of the bidirectional threaded rod rotatably passes through the positioning plate and connects to the motor.

[0007] Preferably, the movable plate has semi-circular sliders at both ends, and the cavity has grooves on both sides that are slidably connected to the semi-circular sliders.

[0008] Preferably, the two movable plates are threadedly connected to a bidirectional threaded rod, and the two movable plates move in opposite directions.

[0009] Preferably, the workbench is provided with guide rods fixed on both sides of the bidirectional threaded rod, and the two ends of the guide rods are connected to two positioning plates. The guide rods are slidably connected to the movable plate, and the guide rods are located inside the movable column.

[0010] The beneficial effects of adopting the above technical solutions are:

[0011] 1. The rotation of the bidirectional threaded rod driven by the motor causes the movable plate to move within the movable cavity, which in turn allows the clamping head to move within the worktable in conjunction with the movable slot, thus facilitating the clamping and fixing of door panels of different sizes from both sides.

[0012] 2. The bidirectional threaded rod is located inside the worktable, and the support column is located directly below the movable groove. Therefore, the waste generated during processing and grinding is less likely to enter the bidirectional threaded rod, thus ensuring the stable operation of the bidirectional threaded rod and extending its service life.

[0013] 3. The clamping head and the movable column are threaded together, which can be replaced according to the door panel of different thicknesses, thereby improving the stability of clamping. The matching of the clamping head and the door panel facilitates the handling of the door panel. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2This is a three-dimensional cross-sectional view of the internal structure of this utility model.

[0016] Figure 3 This is a three-dimensional schematic diagram of the clamping mechanism in this utility model.

[0017] Wherein: 1-Workbench; 11-Cavity; 111-Slide groove; 12-Guide groove; 13-Positioning plate; 2-Clamping mechanism; 21-Moving plate; 211-Semi-circular slider; 22-Clamping head; 23-Double threaded rod; 24-Motor; 25-Moving column; 26-Guide rod. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0019] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, a movable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] like Figure 1-3In this embodiment, a positioning fixture for grinding fire doors includes a worktable 1 and a clamping mechanism 2. The worktable 1 has two symmetrical cavities 11 inside. Two sets of guide grooves 12 communicating with the cavities 11 are symmetrically arranged on both sides of the upper surface of the worktable 1, with each set of guide grooves 12 consisting of two grooves. The clamping mechanism 2 consists of a movable plate 21, a clamping head 22, a bidirectional threaded rod 23, and a motor 24. A positioning plate 13 is installed in the middle of each side of the worktable 1. The movable plate 21 consists of two movable... The movable plate 21 has two symmetrical movable columns 25 on its outer side, located directly below the guide groove 12. The clamping head 22 is U-shaped and threaded into the movable column 25. The clamping head 22 is slidably connected to the guide groove 12. The bidirectional threaded rod 23 is rotatably inserted into the two cavities 11 and rotatably connected to the positioning plate 13 at both ends. One end of the bidirectional threaded rod 23 is rotatably inserted into the positioning plate 13 and connected to the motor 24.

[0022] With the above technical solution, the door panel is placed in the workbench during use, and then the motor 24 drives the bidirectional threaded rod 23 to rotate. The rotation of the bidirectional threaded rod 23 drives the movable plate 21 to move in the cavity 11. The movement of the movable plate 21 drives the movable column 25 to move, thereby driving the clamping head 22 to move along the guide groove 12. Through the movement of the clamping head 22, the door panel is clamped from both sides. The positioning plates 13 on both sides of the workbench 1 facilitate the loading and unloading of the bidirectional threaded rod 23, thus facilitating maintenance. The matching of the clamping head 22 with the thickness of the door panel facilitates the clamping of the door panel and also facilitates the handling of the door panel. The bidirectional threaded rod 23 is located in the two cavities 11, so the waste generated when polishing the door panel is less likely to fall into the surface of the bidirectional threaded rod 23, thus ensuring the stability of use and extending the service life of the bidirectional threaded rod 23.

[0023] Preferably, the movable plate 21 has semi-circular sliders 211 at both ends, and the cavity 11 has grooves 111 on both sides that are slidably connected to the semi-circular sliders 211.

[0024] Through the above technical solution, the semi-circular slider 211, in conjunction with the sliding groove 111, makes the movable plate 21 move more stably within the cavity 11.

[0025] Preferably, the two movable plates 21 are threadedly connected to the bidirectional threaded rod 23, and the two movable plates 21 move in opposite directions.

[0026] Through the above technical solution, the two movable plates 21 cooperate with the bidirectional threaded rod 23 to move towards each other, thereby facilitating the clamping of the door panel from both ends.

[0027] Preferably, guide rods 26 are fixed on both sides of the bidirectional threaded rod 23 in the workbench 1, and the two ends of the guide rods 26 are connected to the two positioning plates 13. The guide rods 26 are slidably connected to the movable plate 21, and the guide rods 26 are located inside the movable column 25.

[0028] Through the above technical solution, the sliding connection between the guide rod 26 and the movable plate 21 further effectively ensures the stability of the movement of the movable plate 21, thereby ensuring the stability of the clamping head 22 clamping the door panel.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate this utility model and are not intended to limit the technical solutions described in this utility model. Therefore, although this specification has described this utility model in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model, and all technical solutions and improvements that do not depart from the spirit and scope of this utility model should be covered within the scope of the claims of this utility model; technologies not described in detail in this utility model are implemented using existing technologies.

Claims

1. A positioning tool for fire door sanding, comprising a workbench, a clamping mechanism, characterized in that: The two cavities are symmetrically arranged inside the workbench, two groups of guide grooves are symmetrically arranged on the upper surface of the workbench and communicate with the cavities, each group of guide grooves is two, the clamping mechanism is composed of a movable plate, a clamping head, a bidirectional threaded rod and a motor, a positioning plate is arranged on the middle part of each side of the workbench, the movable plate is two and is movably arranged in the two cavities and is in threaded connection with the bidirectional threaded rod, two movable columns are symmetrically arranged on the outer side of the movable plate and are located directly below the guide grooves, the clamping head is U-shaped and is in threaded connection with the movable columns, the clamping head is in sliding connection with the guide grooves and the height of the clamping head is matched with the thickness of the door plate to be machined, the bidirectional threaded rod is rotatably arranged in the two cavities and is rotatably connected to the two positioning plates, one end of the bidirectional threaded rod is rotatably arranged in the positioning plate and is connected to the motor.

2. The positioning tool for polishing fireproof door according to claim 1, characterized in that: The two ends of the movable plate are provided with semicircular sliding blocks and the two sides of the cavity are provided with sliding grooves in sliding connection with the semicircular sliding blocks.

3. The positioning tool for fire door sanding according to claim 1, wherein: The two movable plates are in threaded connection with the bidirectional threaded rod and move towards each other.

4. The positioning tool for fire door sanding according to claim 1, wherein: The guide rods are fixedly arranged on the two sides of the bidirectional threaded rod in the workbench and are connected to the two positioning plates, the guide rods are in sliding connection with the movable plates and are located on the inner sides of the movable columns.

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