Polishing equipment for fireproof door

Abstract

The invention relates to the technical field of polishing equipment, in particular to fireproof door polishing equipment which comprises a first conveying frame, a first conveying part and a second conveying frame which are arranged on a frame body, and a polishing part located above the first conveying part is assembled on the frame body; a control system I is arranged between the frame body and the conveying frame I, so that the conveying frame I can do vertical reciprocating motion; the frame body is provided with a first control piece capable of controlling the first conveying piece to do vertical reciprocating motion, and the frame body is provided with a second conveying piece located above the grinding piece and a second control piece capable of controlling the second conveying piece to do vertical reciprocating motion. The frame body is provided with a second control system capable of controlling the second conveying frame to do vertical reciprocating motion. The process of a traditional fireproof door polishing device can be optimized, a complex door plate turnover mechanism is omitted, the polishing efficiency of the polishing equipment is improved, the operation time is shortened, the device is suitable for door plates of different sizes, the structure is simpler, and operation is more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of polishing equipment, and particularly to a polishing equipment for fire doors. Background Art

[0002] A fire door is an important building fire protection facility, and its core function is to effectively block the spread of fire, buying precious time for personnel evacuation and fire rescue. According to the regulations of national standards, qualified fire doors must undergo special fireproof coating treatment to meet the specified fire resistance limit requirements. To ensure the adhesion of the fireproof coating, the surface of the fire door needs to be polished to remove burrs, oxide layers, and old coatings on the surface of the fire door.

[0003] Currently, there are still some problems in the surface polishing process of fire doors in the industry. After the traditional polishing equipment finishes single-sided polishing, it relies on manual operation to flip the door panel, which not only increases labor costs but also severely restricts production efficiency.

[0004] Referring to the Chinese patent document with the authorization announcement number CN221364078U, the announcement date of July 19, 2024, and the name of a fire door polishing device, after single-sided polishing of the fire door panel, the door panel enters the inner cavity of the turning plate, and the turning plate rotates 180 degrees to turn the door panel over. Then, the door panel is pushed back into the grinding cavity for polishing. It realizes automatic turning over of the door panel that has completed single-sided grinding and can automatically send the door panel back into the grinding cavity for grinding the other side, thereby achieving the purpose of saving labor costs.

[0005] Regarding the above-mentioned related technologies, there are still some technical defects: the inner cavity of the turning plate adopts a fixed-size design, which can only adapt to door panels of specific specifications, severely restricting the versatility of the equipment; when the inner cavity size precisely matches the door panel, relative sliding is likely to cause surface scratches, while leaving a gap will lead to a risk of collision during the turning process; if an anti-collision structure is added to the inner wall of the cavity, it will hinder the smooth movement of the door panel. Therefore, there is an urgent need for a polishing equipment for fire doors to solve the problem that the multi-sided polishing effect of the existing equipment on the door panel is not ideal. Summary of the Invention

[0006] In view of this, the present invention provides a polishing equipment for fire doors, aiming to solve the technical problem that the multi-sided polishing effect of the door panel in the existing technology is not ideal.

[0007] In order to solve the above technical problems, the present invention provides a polishing equipment for fire doors, which adopts the following technical scheme: a polishing equipment for fire doors, comprising a conveying frame 1, a transport piece 1 and a conveying frame 2 which are arranged on a frame from left to right in sequence, and the frame is equipped with a polishing piece located above the transport piece 1; a control system 1 is provided between the frame and the conveying frame 1, so that the conveying frame 1 can perform vertical reciprocating motion; a control piece 1 which can control the vertical reciprocating motion of the transport piece 1 is provided on the frame, a transport piece 2 located above the polishing piece and a control piece 2 which can control the vertical reciprocating motion of the transport piece 2 are provided on the frame; a control system 2 which can control the vertical reciprocating motion of the conveying frame 2 is provided on the frame.

[0008] By adopting the above technical solution, the conveyor frame 1 conveys the door panel to the transport component 1, and the transport component 1 cooperates with the polishing component to polish the top surface of the door panel and transport the door panel to the right. After the top surface polishing is completed, the door panel moves to the conveyor frame 2 on the right, and the control system 2 controls the conveyor frame 2 to move upward, transport the door panel upward, and transport the door panel from the right to the transport component 2. The transport component 2 cooperates with the polishing component to polish the bottom surface of the door panel and transport the door panel to the left. The control system 1 controls the conveyor frame 1 to move upward. After the upward movement, the conveyor frame 1 receives the door panel after the bottom surface polishing, and completes the polishing of the top and bottom surfaces of the door panel. For door panels of different thicknesses, the vertical heights of the transport components 1 and 2 are adjusted by the control components 1 and 2 to ensure that the door panel passes through and completes the polishing.

[0009] The process of traditional fire door polishing device has been optimized, and the original single-sided polishing, flipping and secondary polishing processes have been optimized to single-sided polishing, upward movement and reverse polishing, thereby saving the complicated door panel flipping mechanism. Only a simple vertical movement of the door panel is required, thereby solving the shortcomings of poor adaptability, easy damage of door panels and complex structure brought about by the previous door panel flipping mechanism, improving the polishing efficiency of polishing equipment, reducing operation time, and being suitable for door panels of different sizes. The structure is simpler, the operation is more stable, the safety of the equipment is increased, and human intervention in the processing process is reduced. Moreover, two door panels can be polished at the same time. The two door panels are respectively located above and below the polishing part, thereby improving the polishing efficiency.

[0010] Optionally, the grinding pieces are provided in multiple groups and arranged in parallel, and a supporting roller is provided between two adjacent groups of grinding pieces.

[0011] By adopting the above technical solution, the support roller provides supporting force for the upper door panel, which can improve the stability of door panel transportation and the flatness of the polished surface. The rotation of the support roller can cooperate with the transport component to ensure the unidirectional movement of the door panel, optimize the smoothness of the movement of the door panel, and minimize the risk of door panel jamming.

[0012] Optionally, side grinding rollers and drive components are provided on both the front side and the rear side of the frame body, and the drive components are used to control the movement of the side grinding rollers in the front-rear direction.

[0013] By adopting the above technical solution, when the door panel passes through the grinding rollers, the two side grinding rollers can synchronously polish the front side and the rear side of the door panel, improving the integrity of the process. There is no need for additional processes or manual polishing of the sides, enhancing the polishing efficiency. By adjusting the position of the side grinding rollers through the drive components, the situation of conflict between the side grinding rollers and the door panel can be avoided as much as possible.

[0014] Optionally, the control system one can tilt the conveying frame one from top to bottom and to the left.

[0015] By adopting the above technical solution, the conveying frame one can be tilted, facilitating the loading and unloading processes of the door panel and helping to save manpower.

[0016] Optionally, a stop bar and a drive member for controlling the left-right movement of the stop bar are provided at the left end of the conveying frame one, and the stop bar extends in the front-rear direction.

[0017] By adopting the above technical solution, during the loading and unloading processes of the door panel, the stop bar can limit the position of the door panel, improving the stability of the device. After the bottom surface of the door panel is polished, the door panel moves onto the conveying frame one and moves downward with the conveying frame one. At this time, the stop bar pushes the door panel to the right, enabling the right side surface of the door panel to be in contact with the grinding member, thereby grinding the right side surface of the door panel and further improving the integrity of the process and the polishing efficiency.

[0018] Optionally, two groups of calibration members are symmetrically provided on the conveying frame one, and the calibration members can push the door panel to the middle of the conveying frame one and make the front side of the door panel parallel to the left-right direction.

[0019] By adopting the above technical solution, the feeding deviation can be eliminated, the deviation of the door panel in the front-rear direction can be restricted, which helps to improve the grinding and polishing effect of the door panel and the flatness of the polished surface.

[0020] Optionally, the calibration member includes rod one, rod two, rod three and electric push rod four. The left end of the electric push rod four is hinged to the conveying frame one, the output end of the electric push rod four is hinged to the front end of rod one. Rod one and rod two are arranged in parallel. The front ends of rod one and rod two are sequentially hinged to both ends of rod three. The middle parts of rod one and rod two are both hinged to the conveying frame one. Rolling wheels are rotatably connected to the rear ends of rod one and rod two.

[0021] Optionally, a stop bar and a drive member are provided at the right end of the conveying frame two, and two groups of calibration members are symmetrically provided on the conveying frame two.

[0022] By adopting the above technical solution, after the top surface of the door panel is polished, the door panel moves onto the second conveying rack and moves upward along with the second conveying rack. At this time, the stop bar pushes the door panel to the left, enabling the left side of the door panel to contact the grinding part, so as to grind the left side of the door panel, further improving the integrity of the process and the polishing efficiency. Moreover, the setting of the stop bar helps the stable feeding of the door panel.

[0023] Optionally, the first transporting member includes a plurality of rollers arranged in parallel in the left-right direction and two cross beams arranged in parallel in the front-back direction. The plurality of rollers are sequentially rotatably arranged between the two cross beams. The right end of the first conveying rack and the left end of the second conveying rack are both fixedly connected with limit blocks, and the limit blocks can abut against the top surface of the cross beam.

[0024] By adopting the above technical solution, the stability of the device can be improved, which helps the smooth movement of the door panel.

[0025] Optionally, the first control system includes a first electric push rod and a second electric push rod. A horizontal cross bar is provided at the bottom of the frame body. The bottom of the first electric push rod is fixedly connected to the cross bar, and the output end of the first electric push rod is hinged to the bottom surface of the first conveying rack. The second electric push rod is located on the right side of the first electric push rod. The two ends of the second electric push rod are sequentially hinged to the cross bar and the bottom surface of the first conveying rack. The second control system includes a third electric push rod and two limit rods. The bottom end of the third electric push rod is hinged to the cross bar, and the output end of the third electric push rod is hinged to the bottom surface of the second conveying rack. The two limit rods are arranged in parallel in the left-right direction. The top of the limit rod is fixedly connected to the bottom surface of the second conveying rack, and the bottom of the limit rod is vertically slidably inserted into the frame body.

[0026] In summary, the present invention includes the following beneficial technical effects: 1. The process of the traditional fire door polishing device is optimized, eliminating the complex door panel flipping mechanism, solving the disadvantages of poor adaptability, easy damage to the door panel, and complex structure brought by the previous door panel flipping mechanism, improving the polishing efficiency of the polishing equipment, reducing the operation time, being applicable to door panels of different sizes, having a simpler structure, more stable operation, increasing the safety of the equipment, and reducing human intervention in the processing process. Moreover, two door panels can be polished simultaneously, with the two door panels located above and below the grinding part respectively, improving the polishing efficiency.

[0027] 2. The supporting rollers can improve the stability of the door panel conveying, improve the flatness of the polished surface, and the supporting rollers can cooperate with the second transporting member to ensure the one-way movement of the door panel, optimizing the smoothness of the door panel movement and minimizing the risk of door panel jamming as much as possible.

[0028] 3. The two side grinding rollers can simultaneously polish the front and rear sides of the door panel, improving the integrity of the process, eliminating the need for additional processes or manual polishing of the sides, and improving the polishing efficiency.

[0029] 4. The first conveying rack can be tilted, which is convenient for the loading and unloading process of the door panel and helps to save manpower.

[0030] 5. The stop bar can limit the position of the door panel and improve the stability of the device; moreover, the stop bar can push the door panel to polish the left and right sides of the door panel by the polishing roller, improving the polishing efficiency. Description of the Drawings

[0031] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present invention Figure 1 ; Figure 2 is Figure 1 a partial enlarged schematic diagram of part A in Figure 3 It is a sectional schematic diagram of the overall structure of the embodiment of the present invention; Figure 4 is Figure 3 a partial enlarged schematic diagram of part B in Figure 5 is Figure 3 a partial enlarged schematic diagram of part C in Figure 6 It is a schematic diagram of the structures of the first conveying rack, the first transporting member, the second conveying rack, the polishing member and the second transporting member in the embodiment of the present invention; Figure 7 is Figure 6 a partial enlarged schematic diagram of part D in

[0032] Description of the Reference Numerals: 1. Frame body; 110. Cross bar; 2. First conveying rack; 21. Connecting frame; 22. Conveying roller; 3. First transporting member; 31. Cross beam; 32. Rotating roller; 4. Second conveying rack; 5. Polishing member; 51. Polishing roller; 6. Second transporting member; 7. First control system; 71. First electric push rod; 72. Second electric push rod; 8. First control member; 9. Second control member; 10. Second control system; 101. Third electric push rod; 102. Limiting rod; 11. Supporting roller; 12. Side polishing roller; 13. Auxiliary member; 131. Stop bar; 132. Driving member; 14. Calibrating member; 141. First rod; 142. Second rod; 143. Third rod; 144. Fourth electric push rod; 145. Roller; 15. Limiting block. Detailed Embodiment

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. In addition, it should be noted that in the description of the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense.

[0034] The following combines the attached Figure 1 - attachedFigure 7 The present invention is described in further detail.

[0035] The embodiment of the present invention discloses a polishing device for fire doors. Figures 1 to 7 A polishing device for a fire door includes a frame 1, a conveying frame 2, a transport piece 3, a conveying frame 4, a polishing piece 5 and a transport piece 6.

[0036] Reference Figure 1 and Figure 3 The frame 1 is arranged on the horizontal ground, and the frame 1 plays a supporting role. The conveying frame 2, the conveying member 3 and the conveying frame 2 4 are arranged on the frame 1 from left to right. The grinding member 5 and the conveying member 2 6 are both arranged on the frame 1, and the grinding member 5 is arranged above the conveying member 3, and the conveying member 2 6 is arranged above the grinding member 5.

[0037] Specifically, refer to Figure 1 and Figure 2 The conveyor frame 1 2 and the conveyor frame 2 4 have the same structure, both of which include a connection frame 21 and a plurality of conveyor rollers 22. The plurality of conveyor rollers 22 are arranged in parallel in the left-right direction. The conveyor rollers 22 are rotatably connected to the connection frame 21. The plurality of conveyor rollers 22 can rotate around their own central axes. Figure 3 and Figure 4 The transport member 1 3 and the transport member 2 6 have the same structure, both of which include two cross beams 31 and a plurality of rollers 32. The plurality of rollers 32 are arranged in parallel in the left-right direction, and the plurality of rollers 32 are rotatably arranged between the two cross beams 31. The plurality of rollers 32 can rotate around their own central axis. Figure 3 and Figure 4 The grinding member 5 includes a plurality of grinding rollers 51, which are arranged in parallel in the left-right direction, and each of the plurality of grinding rollers 51 can rotate around its own central axis. The rotation of the conveying roller 22, the rotating roller 32 and the grinding roller 51 belongs to the technical content well known to those skilled in the art, and will not be described in detail here.

[0038] The conveying rack 1 2 and the conveying rack 2 4 play the role of conveying and receiving. The transport piece 1 3 and the transport piece 2 6 can cooperate with the polishing piece 5 to enable the door panel to move in a directional manner, so as to facilitate the polishing of the door panel.

[0039] Reference Figure 1 and Figure 3 A control system 7 is arranged between the frame 1 and the conveying frame 2, and the control system 7 can control the movement of the conveying frame 2. Under the control of the control system 7, the conveying frame 2 can make a reciprocating motion in the vertical direction, and can also be in a state of tilting from top to bottom to the left.

[0040] The first conveyor frame 2 moves vertically, enabling the first conveyor frame 2 to adapt to the position of the door panel. Whether the door panel is above or below the grinding part 5, it can be received and conveyed by the first conveyor frame 2, ensuring the stable operation of the device. Moreover, the vertical movement of the connecting frame 21 belongs to mature existing technology with stable structure, which contributes to the stable operation of the polishing equipment. The first conveyor frame 2 is inclined downward from top to bottom and leftward, facilitating the placement of the door panel to be polished on the first conveyor frame 2 or the removal of the polished door panel from the first conveyor frame 2, helping to save labor, speed up the loading and unloading of the door panel, and thus improve the polishing efficiency.

[0041] Referring to Figure 3 , specifically, the first control system 7 includes an electric push rod 71 and an electric push rod 72. A horizontally placed cross bar 110 is provided at the bottom of the frame body 1. The bottom of the electric push rod 71 is fixedly connected to the cross bar 110, and the output end of the electric push rod 71 is hinged to the bottom surface of the first conveyor frame 2. The electric push rod 72 is located on the right side of the electric push rod 71, and both ends of the electric push rod 72 are sequentially hinged to the cross bar 110 and the bottom surface of the first conveyor frame 2.

[0042] When the lengths of the electric push rod 71 and the electric push rod 72 are kept the same and they extend and retract together, the vertical movement of the first conveyor frame 2 can be controlled. When the output end of the electric push rod 71 retracts and the output end of the electric push rod 72 extends, the first conveyor frame 2 can be set to be inclined downward from top to bottom and leftward. Controlled by the electric push rod 71 and the electric push rod 72, the structure is stable, the technology is mature, facilitating the control of the inclination angle and vertical movement of the first conveyor frame 2, and the structure is flexible.

[0043] Referring to Figure 3 and Figure 4 , a first control member 8 is provided between the frame body 1 and the first transport member 3, and the first control member 8 can control the vertical reciprocating movement of the first transport member 3.

[0044] By changing the vertical position of the first transport member 3, the interval between the first transport member 3 and the bottom surface of the grinding roller 51 can be changed, thereby expanding the applicable range of the device and making the device applicable to the polishing operations of fire doors with different thicknesses.

[0045] Specifically, the first control member 8 is a linear driving device, and this linear driving device is an electric push rod or a hydraulic cylinder.

[0046] Referring to Figure 3 and Figure 4 , a second control member 9 is provided between the frame body 1 and the second transport member 6, and the second control member 9 can control the vertical reciprocating movement of the second transport member 6.

[0047] By changing the vertical position of the second transport member 6, the interval between the second transport member 6 and the top surface of the grinding roller 51 can be changed, thereby expanding the applicable range of the device and making the device applicable to the polishing operations of fire doors with different thicknesses.

[0048] Specifically, the control component 2 9 is a linear drive device, which is an electric push rod or a hydraulic cylinder.

[0049] Reference Figure 1 and Figure 3 A control system 10 is provided between the frame 1 and the conveying frame 4, and the control system 10 can control the conveying frame 4 to reciprocate in the vertical direction.

[0050] The conveying frame 2 4 drives the door panel to move vertically, and the door panel with the polished top surface is conveyed upward to the top of the grinding roller 51 and the bottom surface of the door panel is polished.

[0051] Reference Figure 3 Specifically, the control system 2 10 includes an electric push rod 3 101 and four limit rods 102. The bottom end of the electric push rod 3 101 is hinged to the cross bar 110, and the output end of the electric push rod 3 101 is hinged to the bottom surface of the conveying frame 2 4. The four limit rods 102 are divided into a group of two. The two groups of limit rods 102 are arranged in parallel in the front and rear directions, and the two limit rods 102 in each group are arranged in parallel in the left and right directions. The top of the limit rod 102 is fixedly connected to the bottom surface of the conveying frame 2 4, and the bottom of the limit rod 102 is vertically slidably inserted into the frame body 1.

[0052] The setting of the limiting rod 102 can improve the stability of the conveying frame 24 during the vertical movement.

[0053] Reference Figure 3 and Figure 4 Furthermore, the frame 1 is provided with a plurality of support rollers 11, wherein the plurality of support rollers 11 are grouped in pairs, wherein the two support rollers 11 of each group of support rollers 11 are arranged in parallel in the vertical direction, and the plurality of groups of support rollers 11 are arranged in parallel in the left-right direction, and the support rollers 11 can rotate around their own central axes. Among them, driving the plurality of support rollers 11 to rotate and the above-mentioned rotating rollers 32 to rotate are both technical contents well known to those skilled in the art, and can be driven to rotate by, for example, belt transmission, etc., and will not be described in detail in the text.

[0054] The support roller 11 provides support force for the upper door panel, which can improve the stability of door panel transportation and the flatness of the polished surface. The rotation of the support roller 11 can cooperate with the transport member 2 6 to ensure the unidirectional movement of the door panel, optimize the smoothness of the door panel movement, and minimize the risk of door panel jamming.

[0055] Reference Figure 3 and Figure 4, Further, side grinding rollers 12 and drive components are provided on both the front side and the rear side of the frame body 1. The drive component can change the position of the side grinding roller 12 to move the side grinding roller 12 in the front-back direction, and the side grinding roller 12 rotates around its own central axis. Specifically, the drive component is a linear drive device, and the linear drive device is an electric push rod or a hydraulic cylinder. Among them, the rotation of the side grinding roller 12 around its own central axis is a well-known technical content for those skilled in the art and will not be elaborated here.

[0056] When the door panel passes through the grinding roller 51, the two side grinding rollers 51 can synchronously polish the front side and the rear side of the door panel, improving the integrity of the process. There is no need for additional processes or manual polishing of the sides, enhancing the polishing efficiency. By adjusting the position of the side grinding roller 12 through the drive component, the situation of conflict between the side grinding roller 12 and the door panel can be avoided as much as possible.

[0057] Refer to Figure 3 and Figure 5 , Further, auxiliary components 13 are provided at both the left end of the first conveying frame 2 and the right end of the second conveying frame 4. The auxiliary component 13 includes a stop rod 131 and a drive member 132. The stop rod 131 extends in the front-back direction, and the drive member 132 can control the stop rod 131 to move in the left-right direction. Specifically, the drive member 132 is a linear drive device, and the linear drive device is an electric push rod or a hydraulic cylinder.

[0058] For the stop rod 131 on the first conveying frame 2, during the loading and unloading processes of the door panel, the stop rod 131 can limit the position of the door panel, improving the stability of the device. After the top surface of the door panel is polished, the door panel moves to the second conveying frame 4 and moves upward with the second conveying frame 4. At this time, the stop rod 131 pushes the door panel to the left, enabling the left side of the door panel to be in contact with the grinding member 5, so as to grind the left side of the door panel, and the setting of the stop rod 131 helps the stable feeding of the door panel. After the bottom surface of the door panel is polished, the door panel moves to the first conveying frame 2 and moves downward with the first conveying frame 2. At this time, the stop rod 131 pushes the door panel to the right, enabling the right side of the door panel to be in contact with the grinding member 5, so as to grind the right side of the door panel, further improving the integrity of the process and the polishing efficiency.

[0059] Further, calibration components are provided on both the first conveying frame 2 and the second conveying frame 4. The calibration component includes two sets of symmetrically arranged calibration members 14.

[0060] Refer to Figure 1 and Figure 2 , The calibration member 14 can eliminate the offset existing during the feeding process of the door panel, limit the offset of the door panel in the front-back direction, contribute to improving the effect of grinding and polishing the door panel, and improving the flatness of the polished surface.

[0061] Specifically, the calibration member 14 includes a first rod 141, a second rod 142, a third rod 143, and an electric push rod 144. The left end of the electric push rod 144 is hinged to the first conveying frame 2, and the output end of the electric push rod 144 is hinged to the front end of the first rod 141. The first rod 141 and the second rod 142 are arranged in parallel. The front ends of the first rod 141 and the second rod 142 are sequentially hinged to both ends of the third rod 143. The middle parts of the first rod 141 and the second rod 142 are both hinged to the first conveying frame 2. Rolling wheels 145 are rotatably connected to the rear ends of the first rod 141 and the second rod 142.

[0062] Referring to Figure 6 and Figure 7 , further, limit blocks 15 are fixedly connected to the right end of the first conveying frame 2 and the left end of the second conveying frame 4. The limit blocks 15 can abut against the top surface of the cross beam 31 of the first transporting member 3.

[0063] Since the first transporting member 3 can move vertically, the limit blocks 15 are provided. The limit blocks 15 can abut against the cross beam 31, which can limit the downward movement distance of the limit blocks 15, ensuring that the top surfaces of the conveying rollers 22 of the first conveying frame 2 and the second conveying frame 4 are flush with the top surfaces of the rotating rollers 32 of the first transporting member 3, which is beneficial to the smooth movement of the door panel. Since the position of the grinding member 5 relative to the frame body 1 remains unchanged in the vertical direction, when the first conveying frame 2 and the second conveying frame 4 move upward to a specified height, the top surfaces of their own conveying rollers 22 can be made flush with the top surface of the grinding roller 51, ensuring the smooth movement of the door panel.

[0064] The implementation principle of a polishing device for a fire door in an embodiment of the present invention is as follows: The output end of the first electric push rod 71 retracts, and the output end of the second electric push rod 72 extends. The first conveying frame 2 is inclined downward to the left from top to bottom. The stop rod 131 is controlled by the driving member 132 on the first conveying frame 2, so that the stop rod 131 moves towards the left end of the first conveying frame 2. The door panel is placed obliquely on the first conveying frame 2, and the door panel abuts against the stop rod 131. The stop rod 131 can support the door panel. Then, through the control of the first electric push rod 71 and the second electric push rod 72, the first conveying frame 2 is restored to the horizontal state, and the limit block 15 on the first conveying frame 2 abuts against the cross beam 31 of the first transporting member 3, completing the feeding of the door panel.

[0065] After that, the conveying rollers 22 of the first conveying frame 2 rotate, causing the door panel to move to the right. The two calibration members 14 on the first conveying frame 2 cooperate, and the two rolling wheels 145 sequentially abut against the front side and the rear side of the door panel to calibrate the position of the door panel. The door panel enters between the first transporting member 3 and the bottom surface of the grinding roller 51, and the door panel continues to move to the right, completing the first feeding of the door panel. The door panel enters between the first transporting member 3 and the grinding roller 51, and the grinding roller 51 grinds the top surface of the door panel. During the rightward movement of the door panel, the two side grinding rollers 12 respectively grind the front side and the rear side of the door panel.

[0066] After the top surface of the door panel is polished, the door panel moves to the right onto the conveyor frame 2 4, and the output end of the electric push rod 3 101 is extended, so that the conveyor frame 2 4 moves upward. During the upward movement of the conveyor frame 2 4, the blocking rod 131 on the conveyor frame 2 4 pushes the door panel to the left, so that the left side of the door panel is connected with the side of the grinding roller 51, and the polishing of the left side of the door panel is completed. The conveyor frame 2 4 moves upward until the bottom surface of the door panel is flush with the top surface of the grinding roller 51, and the conveyor frame 2 4 conveys the door panel to the left. During the conveying process, the calibration part 14 on the conveyor frame 2 4 will calibrate the position of the door panel to complete the second feeding of the door panel.

[0067] The door panel enters between the transport member 2 6 and the top surface of the grinding roller 51, and the grinding roller 51 grinds the bottom surface of the door panel. The conveyor frame 1 2 moves upward and receives the door panel after the bottom surface is grinded, and the conveyor frame 1 2 drives the door panel to move downward. During the movement, the stopper 131 on the conveyor frame 1 2 pushes the door panel to the right, so that the right side of the door panel is connected to the side of the grinding roller 51.

[0068] At this point, the polishing and grinding of the top, bottom, front and rear sides, and left and right sides of the door panel are completed.

[0069] Before grinding the door panel, the interval between the transport member 1 3 and the grinding roller 51 and the interval between the transport member 2 6 and the grinding roller 51 can be adjusted according to the thickness of the door panel.

Claims

1. A polishing device for a fire door, comprising a conveying frame 1 (2), a conveying member 1 (3) and a conveying frame 2 (4) which are arranged on a frame body (1) from left to right, and a polishing member (5) located above the conveying member 1 (3) is mounted on the frame body (1), characterized in that: A control system (7) is provided between the frame (1) and the conveying frame (2), so that the conveying frame (2) can perform vertical reciprocating motion; The frame (1) is provided with a control member 1 (8) capable of controlling the vertical reciprocating motion of the transport member 1 (3); the frame (1) is provided with a transport member 2 (6) located above the polishing member (5) and a control member 2 (9) capable of controlling the vertical reciprocating motion of the transport member 2 (6); The frame body (1) is provided with a control system 2 (10) capable of controlling the vertical reciprocating motion of the conveying frame 2 (4).

2. The fire door polishing device according to claim 1, characterized in that: The grinding pieces (5) are provided in multiple groups and are arranged in parallel, and a supporting roller (11) is provided between two adjacent groups of grinding pieces (5).

3. The fire door polishing device according to claim 1, characterized in that: The front and rear sides of the frame (1) are both provided with side grinding rollers (12) and a driving assembly, and the driving assembly is used to control the side grinding rollers (12) to move in the front-rear direction.

4. The fire door polishing device according to claim 1, characterized in that: The control system 1 (7) can cause the conveying frame 1 (2) to tilt from top to bottom and to the left.

5. The fire door polishing device according to claim 4, characterized in that: A blocking rod (131) and a driving member (132) for controlling the blocking rod (131) to move left and right are provided at the left end of the conveying frame 1 (2); the blocking rod (131) extends in the front-rear direction.

6. The fire door polishing device according to claim 5, characterized in that: Two sets of calibration pieces (14) are symmetrically arranged on the conveying frame one (2), and the calibration pieces (14) can push the door panel to the middle of the conveying frame one (2) and make the front side of the door panel parallel to the left and right directions.

7. The fire door polishing device according to claim 6, characterized in that: The calibration component (14) comprises a rod 1 (141), a rod 2 (142), a rod 3 (143) and an electric push rod 4 (144); the left end of the electric push rod 4 (144) is hinged to the conveying frame 1 (2); the output end of the electric push rod 4 (144) is hinged to the front end of the rod 1 (141); the rod 1 (141) and the rod 2 (142) are arranged in parallel; the front ends of the rod 1 (141) and the rod 2 (142) are hinged to the two ends of the rod 3 (143) in sequence; the middle parts of the rod 1 (141) and the rod 2 (142) are both hinged to the conveying frame 1 (2); and the rear ends of the rod 1 (141) and the rod 2 (142) are both rotatably connected to rollers (145).

8. The fire door polishing device according to claim 7, characterized in that: A blocking rod (131) and a driving member (132) are provided at the right end of the second conveying frame (4), and two sets of calibration members (14) are symmetrically provided on the second conveying frame (4).

9. The fire door polishing device according to claim 1, characterized in that: The transport member 1 (3) comprises a plurality of rollers (32) arranged in parallel in the left-right direction and two cross beams (31) arranged in parallel in the front-back direction. The plurality of rollers (32) are arranged between the two cross beams (31) and are rotatable in sequence. The right end of the transport frame 1 (2) and the left end of the transport frame 2 (4) are both fixedly connected to a limit block (15). The limit block (15) can abut against the top surface of the cross beam (31).

10. The fire door polishing device according to claim 4, characterized in that: The control system 1 (7) comprises an electric push rod 1 (71) and an electric push rod 2 (72); a horizontally placed cross bar (110) is provided at the bottom of the frame (1); the bottom of the electric push rod 1 (71) is fixedly connected to the cross bar (110); the output end of the electric push rod 1 (71) is hinged to the bottom surface of the conveying frame 1 (2); the electric push rod 2 (72) is located on the right side of the electric push rod 1 (71); and the two ends of the electric push rod 2 (72) are hinged to the cross bar (110) and the bottom surface of the conveying frame 1 (2) in sequence; The control system 2 (10) comprises an electric push rod 3 (101) and two limit rods (102), the bottom end of the electric push rod 3 (101) is hinged to the cross bar (110), the output end of the electric push rod 3 (101) is hinged to the bottom surface of the conveying frame 2 (4), the two limit rods (102) are arranged in parallel in the left and right directions, the top of the limit rod (102) is fixedly connected to the bottom surface of the conveying frame 2 (4), and the bottom of the limit rod (102) is vertically slidably inserted into the frame body (1).

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