Automatic feeding type bar sanding device

Abstract

The application relates to a bar sanding device with automatic feeding, and relates to the technical field of bar sanding, which comprises a guide table and a feeding table, a pushing rod is arranged on the guide table, sand belt machines and sand wheel machines are oppositely arranged on the two sides of the guide table close to a discharging end, and the device further comprises a feeding assembly, a following pressure assembly and a following dust absorption assembly. The feeding assembly is used for orderly guiding and feeding obliquely arranged bars to the feeding table. The following pressure assembly comprises a first pressure mechanism and a second pressure mechanism, and the second pressure mechanism is provided with a liftable bar pressure part. Through the synchronous action of the first pressure mechanism and the pushing rod, the second pressure mechanism is extruded, an arc-shaped pressing plate provided with guide wheels is in real-time pressure against the bars, the frictional resistance can be reduced, stable radial constraint can be formed in the sanding process, the torque generated by the sand belt and the sand wheel can be offset, the bars can be prevented from shaking or moving, the sanding surface roughness can be ensured, and the size precision can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bar sanding, in particular to an automatic feeding type bar sanding device. BACKGROUND

[0002] In the field of bar processing, sanding treatment is the core process to guarantee the surface quality and dimensional accuracy of the bar, and its core role is to precisely remove burrs, oxidation layers and uneven defects on the surface of the bar through polishing operation, so that the bar can meet the requirements of subsequent processing links or be directly put into use.

[0003] However, the traditional bar sanding device has many problems to be solved in actual use. On the one hand, when the bar sanding operation is performed, the force exerted by the sand belt or sand wheel on the bar is likely to cause the bar to shake or move at the moment when the end of the bar just contacts the sand belt or sand wheel. In the absence of effective restraint on the far end of the bar, this instability will directly affect the sanding effect, resulting in excessive surface roughness of the sanded bar and decreased dimensional accuracy, and even causing waste products, which greatly increases the production cost.

[0004] On the other hand, most traditional devices rely on manual feeding mode, which requires the operator to place the bars one by one in the sanding area. This not only consumes a lot of manpower, but also causes uneven feeding speed due to the uncertainty of manual operation, which seriously restricts the sanding efficiency. Even though some existing bar sanding devices are equipped with automatic feeding function, they still have obvious defects. The bars need to be laid horizontally on the feeding table by manual operation. If the bars are stacked in a concentrated manner, the bars in multiple layers are often skewed or stacked, which may cause feeding jam and affect the continuity and efficiency of the sanding operation. Therefore, an automatic feeding type bar sanding device is proposed. SUMMARY

[0005] To overcome the problems in the related art, the present application provides an automatic feeding type bar sanding device. Through the synchronous action of the first pressing mechanism and the pushing rod, the arc-shaped pressing plate installed with guide wheels can press the bar in real time, forming radial restraint and offsetting the torque generated by the sand belt and sand wheel to prevent the bar from shaking or moving.

[0006] To achieve the above-mentioned purpose, the present application provides an automatic feeding type bar sanding device, which comprises a guide table and a feeding table. The guide table is provided with a pushing rod, and the two sides of the guide table near the discharge end are provided with a sand belt machine and a sand wheel machine. The device further comprises:

[0007] A feeding assembly is installed at the feeding end of the feeding table for orderly guiding and feeding the inclined bars to the feeding table.

[0008] The follow-up pressing assembly comprises a first pressing mechanism and a second pressing mechanism, the first pressing mechanism is connected to the pushing rod, the second pressing mechanism is arranged on the guide table, and the second pressing mechanism has a lifting bar pressing part, when the pushing rod pushes the bar for sanding operation, the first pressing mechanism synchronously acts and extrudes the second pressing mechanism, so that the bar pressing part presses the bar pushed by the pushing rod;

[0009] The follow-up dust absorption assembly is connected to the driving shaft of the belt sander, and during operation of the belt sander, dust generated by sanding is synchronously sucked through the follow-up dust absorption assembly, and the suction frequency synchronously changes with the operation speed of the belt sander.

[0010] Preferably, the feeding assembly comprises:

[0011] The material frame is fixed at the end of the feeding table, and the outer wall of the material frame is provided with a discharging port, and the bottom end of the discharging port is flush with the guide inclined surface of the feeding table;

[0012] The motor is installed at the outer end of the material frame, and the output end of the motor is connected with a connecting rod, and the connecting rod is fixed with a material pushing strip.

[0013] Preferably, the first pressing mechanism comprises:

[0014] The L-shaped strip is fixed at the telescopic end of the pushing rod;

[0015] The pressing strip is fixed at the lower end surface of the horizontal section of the L-shaped strip, and the end of the pressing strip is provided with a downward inclined surface.

[0016] Preferably, the second pressing mechanism comprises:

[0017] The vertical plate is fixed at the upper end surface of the guide table and away from the feeding table, and the vertical plate is provided with a through slot;

[0018] The arc-shaped pressing plate is fixed with a convex plate penetrating through the through slot on one side;

[0019] The convex block is fixed at the upper end surface of the arc-shaped pressing plate, and the convex block is provided with a pressure receiving inclined surface matched with the downward inclined surface;

[0020] The elastic guide member is arranged in the through slot and connected with the convex plate.

[0021] Preferably, the elastic guide member comprises a guide rod and a first spring, the guide rod vertically penetrates through the convex plate, the first spring is sleeved outside the guide rod, and the first spring is located at the lower end surface of the convex plate.

[0022] Preferably, the lower end surface of the arc-shaped pressing plate is provided with a guide wheel rolling along the length direction of the guide table.

[0023] Preferably, the follow-up dust absorption assembly comprises:

[0024] A disc is connected with the driving shaft of the belt sander through a connecting shaft;

[0025] A suction cylinder is connected with a dust collecting cylinder through a dust collecting pipe at the bottom end;

[0026] A pull rod is arranged in the suction cylinder, and a connecting block is fixed to the outer end of the pull rod, and a piston suction piece is installed at the inner end of the pull rod;

[0027] A pull rope is connected between the disc and the connecting block, and the end connected with the disc is eccentrically connected;

[0028] A second spring is sleeved on the outer part of the pull rod, and one end is fixed to the piston suction piece, and the other end is fixed to the inner wall of the suction cylinder.

[0029] Preferably, the piston suction piece comprises an annular strip and a piston plate connected through a rod body, the piston plate is located at one end close to the pull rod, two semicircular hinge plates are hinged in the annular strip, and the distance between the annular strip and the piston plate is not less than the diameter of the dust collecting pipe.

[0030] Preferably, the inner blocking strip is fixed to the side of the semicircular hinge plate facing the piston plate, and the outer blocking block is fixed to the side of the semicircular hinge plate away from the piston plate.

[0031] Preferably, the feeding table comprises a guide inclined table, and a liftable movable blocking strip is arranged at the discharging end of the guide inclined table.

[0032] The technical scheme provided by the present application can have the following beneficial effects:

[0033] 1. In the present application, the follow-up pressing assembly is driven by the first pressing mechanism and the push rod, and the second pressing mechanism is pressed to make the arc-shaped pressing plate with guide wheels press the bar stock in real time, which can reduce the frictional resistance, form stable radial constraint during sanding, offset the torque generated by the sand belt and the sand wheel, prevent the bar stock from shaking or moving, ensure the surface roughness of sanding, and improve the dimensional accuracy.

[0034] 2. In the present application, the feeding assembly stores the bar stock through the material frame, and the motor drives the material pushing strip to orderly push the bar stock, so that the bar stock is sequentially slid into the feeding table through the discharging port without manual intervention. The size design of the discharging port and the dynamic pushing action of the material pushing strip effectively avoid the bar stock from being stuck, reduce the labor cost, ensure the continuity of feeding, and adapt to the batch production demand.

[0035] 3、The present application, the dust absorption assembly is linked with the drive shaft of the belt sander, the piston suction is realized through the eccentricity of the disc pulling the pull rod, the suction frequency synchronously changes with the running speed of the belt sander, the suction frequency is high when the speed of the belt is high, dust is removed in time, the suction frequency is low when the speed is low, energy waste is reduced, an independent fan is not needed, the structure is simplified, energy consumption is reduced, and the working environment is improved.

[0036] 4、The present application, the dust absorption assembly is linked with the drive shaft of the belt sander, the piston suction is realized through the eccentricity of the disc pulling the pull rod, the suction frequency synchronously changes with the running speed of the belt sander, the suction frequency is high when the speed of the belt is high, dust is removed in time, the suction frequency is low when the speed is low, energy waste is reduced, an independent fan is not needed, the structure is simplified, energy consumption is reduced, and the working environment is improved.

[0037] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0038] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which like reference characters refer to like parts throughout the several views, and in which:

[0039] Figure 1 is the overall structure schematic diagram of the present application;

[0040] Figure 2 is the overall structure schematic diagram of the present application Figure 1 is the overall structure schematic diagram of the present application;

[0041] Figure 3 is the structure schematic diagram of the feeding table and the feeding assembly of the present application;

[0042] Figure 4 is the structure schematic diagram of the present application;

[0043] Figure 5 is the structure schematic diagram of the present application;

[0044] Figure 6 is the structure schematic diagram of the second pressing mechanism of the present application;

[0045] Figure 7 is the structure schematic diagram of the present application;

[0046] Figure 8 is the structure schematic diagram of the present application;

[0047] Figure 9 is the structure schematic diagram of the piston suction of the present application.

[0048] The correspondence between the reference signs of the figures and the component names is as follows:

[0049] 1, guiding table; 101, pushing rod; 2, feeding table; 21, guiding inclined table; 22, movable blocking strip; 3, belt sander; 4, grinding machine;

[0050] 5, feeding assembly; 51, frame; 52, motor; 53, discharging port; 54, connecting rod; 55, stirring strip;

[0051] 6, following pressure assembly; 61, first pressure mechanism; 611, L-shaped strip; 612, pressing strip; 613, downward pressing inclined surface; 62, second pressure mechanism; 621, vertical plate; 622, arc-shaped pressing plate; 623, protruding block; 624, protruding plate; 625, elastic guide; 6251, guide rod; 6252, first spring; 626, guide wheel;

[0052] 7, following dust suction assembly; 71, disc; 72, suction cylinder; 73, dust collecting cylinder; 74, pulling rope; 75, pulling rod; 751, connecting block; 76, piston type suction member; 761, annular strip; 762, piston plate; 763, semicircular hinged plate; 764, outer blocking block; 765, inner blocking strip; 77, second spring. DETAILED DESCRIPTION

[0053] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application. The preferred embodiments of the present application will be described in more detail below with reference to the drawings. Although the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to convey the scope of the present application to those skilled in the art completely.

[0054] The technical solutions of the embodiments of the present application will be described in detail below with reference to the drawings.

[0055] Embodiment one: refer to Figures 1-6As shown, the present application provides an automatic feeding type bar sanding equipment, which comprises a guide table 1 and a feeding table 2, the guide table 1 is provided with a U-shaped or V-shaped guide groove along the length direction, the two sides of the guide table 1 near the discharging end are provided with a sand belt machine 3 and a sand wheel machine 4 in opposition, the sand belt machine 3 adopts a ring-shaped sand belt design, the granularity of the sand belt can be replaced according to the surface treatment requirements of the bar, a pushing rod 101 is arranged on the guide table 1, the pushing rod 101 can be a pneumatic telescopic rod or an electric telescopic rod, which is used to push the bar fed from the feeding table 2 to the guide table 1 forward, so that the bar enters the polishing area between the sand belt machine 3 and the sand wheel machine 4, wherein, if it is a pneumatic telescopic rod, a gas pressure regulating valve and a buffer device can be equipped, the pushing force and speed can be adjusted according to the material and length of the bar, so as to avoid the bending of the bar due to excessive pushing force or the influence on the processing efficiency due to slow pushing; if it is an electric telescopic rod, a servo motor is adopted for driving, the telescopic stroke and speed are accurately controlled through a programmable controller, the pushing precision of millimeter level is realized, and it is ensured that each bar can accurately enter the polishing area, the feeding table 2 comprises a guide inclined table 21, a liftable movable blocking strip 22 is arranged at the discharging end of the guide inclined table 21, the guide inclined table 21 adopts an inclined design, the inclination angle thereof can be between 15°-30°, so that the bar can smoothly slide by relying on its own gravity, the two sides of the guide inclined table 21 are provided with blocking plates, the height of the blocking plates can be set according to the diameter of the bar, so as to prevent the bar from falling from the two sides during the sliding process, the movable blocking strip 22 realizes the lifting action by a telescopic rod, a wear-resistant pad is arranged at the top of the movable blocking strip 22, so as to reduce the friction damage to the bar, the lifting action of the movable blocking strip 22 can be controlled by a sensor and a controller (the controller adopts a PLC programmable logic controller, and the automatic operation of the equipment can be realized), when the bar on the guide table 1 completes the polishing and leaves, the sensor sends a signal, the movable blocking strip 22 automatically descends, releases a bar to enter the guide table 1, and then the movable blocking strip 22 rapidly rises to block the subsequent bars, so as to realize the one-by-one feeding of the bars and ensure the orderliness and accuracy of the feeding.

[0056] In addition, it also comprises a feeding assembly 5 and a follow-up pressing assembly 6, the feeding assembly 5 is installed at the feeding end of the feeding table 2, and is used to orderly guide and convey the inclined bar to the feeding table 2, the follow-up pressing assembly 6 comprises a first pressing mechanism 61 and a second pressing mechanism 62, the first pressing mechanism 61 is connected to the pushing rod 101, the second pressing mechanism 62 is arranged on the guide table 1, and the second pressing mechanism 62 has a liftable bar pressing part, when the pushing rod 101 pushes the bar to perform the sanding operation, the first pressing mechanism 61 synchronously acts and presses the second pressing mechanism 62, so that the bar pressing part presses the bar pushed by the pushing rod 101, so as to ensure the stability of the far end of the bar in the initial sanding stage.

[0057] Among them, refer to Figure 3As shown, the feeding assembly 5 includes a material frame 51 fixed at the end of the feeding table 2, and a motor 52. The inner bottom of the material frame 51 is designed as a slope, and the outer wall of the material frame 51 is provided with a discharge port 53, the bottom end of which is flush with the guide slope of the feeding table 2, so that the bar material can smoothly slide into the feeding table 2 after coming out of the discharge port 53, avoiding jamming or falling due to height difference. The width of the discharge port 53 is greater than the diameter of one bar material but less than the sum of the diameters of two bar materials, which prevents two or more bar materials from being extruded out of the discharge port 53 at the same time, ensuring the uniqueness and orderliness of feeding. The motor 52 is installed at the outer end of the material frame 51, and the output end of the motor 52 is connected with a connecting rod 54, on which a material pushing strip 55 is fixed. In use, the bar materials to be sanded can be placed in the material frame 51, and the motor 52 can be started to drive the material pushing strip 55 to push the bar materials, which can effectively break the stable stacking state of the bar materials placed together and avoid the occurrence of jamming. Moreover, with the continuous rotation and pushing of the material pushing strip 55, the bar materials placed obliquely will gradually adjust their positions under the action of the material pushing strip 55 and finally be properly positioned to smoothly enter the feeding table 2 from the discharge port 53. This design does not require manual placement of the bar materials on the feeding table 2 one by one, reducing the labor and making the feeding process more convenient and time-saving.

[0058] To realize the function of the material pushing strip 55, the material pushing strip 55 can adopt a multi-section bending structure to apply force to the bar materials from different angles when rotating, which can more easily break the stable stacking of the bar materials. The end of the material pushing strip 55 can be designed as an arc shape to avoid scratching the bar materials during pushing and better fit the surface of the bar materials to increase the contact area and improve the pushing effect. The material pushing strip 55 can be made of a wear-resistant material with certain elasticity, such as polyurethane. The elastic property allows the material pushing strip 55 to deform appropriately when colliding with the bar materials, which not only ensures sufficient pushing force but also reduces damage to the bar materials and the material pushing strip 55 itself. The wear resistance can prolong the service life of the material pushing strip 55 to adapt to long-term work requirements. In addition, the installation angle of the material pushing strip 55 can also be optimized to form a certain angle (30°-60°) with the connecting rod 54, so that the material pushing strip 55 can not only push the bar materials forward and backward but also generate a lateral thrust on the oblique bar materials to help them adjust their positions more quickly.

[0059] The length of the material pushing strip 55 can be required as follows: when the material pushing strip 55 is perpendicular to the inner bottom of the material frame 51, the distance between the end of the material pushing strip 55 and the material frame 51 should be able to accommodate one bar material.

[0060] Referring to Figure 4 - Figure 6As shown, the first pressing mechanism 61 comprises an L-shaped strip 611 and a pressing strip 612, one end of the L-shaped strip 611 is fixed on the telescopic end of the pushing rod 101, the pressing strip 612 is fixed on the lower end surface of the horizontal segment of the L-shaped strip 611, and the end of the pressing strip 612 is provided with a downward inclined surface 613, when the pushing rod 101 is extended, it can not only push the bar material, but also drive the L-shaped strip 611 to move forward, and then the pressing strip 612 provided with the downward inclined surface 613 can press the second pressing mechanism 62.

[0061] Referring to Figure 5 Figure 6 As shown, the second pressing mechanism 62 comprises a vertical plate 621, an arc-shaped pressing plate 622 and an elastic guide 625, the vertical plate 621 is fixed on the upper end surface of the guide table 1, and the vertical plate 621 is located on the side away from the feeding table 2, a through slot is arranged on the vertical plate 621, the arc-shaped pressing plate 622 is fixed with a convex plate 624 penetrating through the through slot, and a guide wheel 626 rolling along the length direction of the guide table 1 is installed on the lower end surface of the arc-shaped pressing plate 622, the guide wheel 626 contacts the bar material, which can not only reduce the shaking of the bar material before sanding, but also reduce the resistance, and the upper end surface of the arc-shaped pressing plate 622 is fixed with a convex block 623, a pressure receiving inclined surface matched with the downward inclined surface 613 is arranged on the convex block 623, and the elastic guide 625 is arranged in the through slot and connected with the convex plate 624.

[0062] Among them, the elastic guide 625 comprises a guide rod 6251 and a first spring 6252, both of which are provided with two, the guide rod 6251 is vertically connected in the through slot, and the guide rod 6251 penetrates through the convex plate 624, and the first spring 6252 is sleeved outside the guide rod 6251, and the first spring 6252 is located on the lower end surface of the convex plate 624.

[0063] Through the above, in the specific sanding process, when the bar material to be sanded enters the guide table 1, the pushing rod 101 is started to extend at this time, the pushing block at the end of the pushing rod 101 can push the bar material to move, so that the end of the bar material away from the pushing rod 101 enters the polishing area formed between the sand belt machine 3 and the sand wheel machine 4, at the same time, the telescopic end of the pushing rod 101 can also drive the L-shaped strip 611 to move forward, the convex block 623 provided with the pressure receiving inclined surface is pressed by the pressing strip 612 provided with the downward inclined surface 613, the downward movement of the convex block 623 makes the arc-shaped pressing plate 622 move downward, the arc-shaped pressing plate 622 provided with the guide wheel 626 can form stable radial constraint, which can effectively offset the torque generated by the uneven extrusion force of the sand belt and the sand wheel during the sanding process of the other end of the bar material, prevent the bar material from radial shaking or axial movement, make the bar material to be sanded keep a relatively stable posture during sanding, ensure that the sand belt and the sand wheel can uniformly act on the surface of the bar material, thereby significantly improve the surface roughness consistency and size accuracy after sanding.

[0064] ​And the limit is started with the extension of the pusher 101, and stopped with the retraction of the pusher 101, which is synchronized with the operation of the pusher 101, simplifies the equipment control logic, and meets the continuous operation requirements of the automatic sanding line. Secondly, the limiting mechanism is only started when the material is pushed, and is closed when the material is retracted, reducing unnecessary energy consumption.

[0065] Wherein, in the stage of moving down under the pressure of the arc-shaped pressing plate 622, the first spring 6252 is in a compressed state, and after the retraction of the pusher 101, the first spring 6252 returns to its original state, so that the arc-shaped pressing plate 622 returns to its original position, ready for the next limit.

[0066] Embodiment two: refer to Figure 1 - Figure 2 , Figure 4 and Figure 7 - Figure 9 The automatic feeding type bar sanding equipment further comprises a follow-up dust absorption assembly 7 connected to the drive shaft of the sanding belt machine 3. During the operation of the sanding belt machine 3, the dust generated during sanding is sucked through the follow-up dust absorption assembly 7 synchronously, and the suction frequency changes synchronously with the operation speed of the sanding belt machine 3. That is, the faster the operation speed of the sanding belt machine 3, the faster the suction frequency of the follow-up dust absorption assembly 7, and the slower the operation speed of the sanding belt machine 3, the slower the suction frequency of the follow-up dust absorption assembly 7, reducing energy waste.

[0067] Wherein, refer to Figure 7 - Figure 9 The follow-up dust absorption assembly 7 comprises a disc 71 and a suction cylinder 72. The disc 71 is connected to the drive shaft of the sanding belt machine 3 through a connecting shaft. The bottom end of the suction cylinder 72 is connected with a dust collecting cylinder 73 through a dust collecting pipe. The lower end of the dust collecting cylinder 73 is connectable to an external exhaust hose. A pull rod 75 is arranged in the suction cylinder 72. The outer end of the pull rod 75 is fixed with a connecting block 751. A piston type suction member 76 is installed at the inner end of the pull rod 75. A pull rope 74 is connected between the disc 71 and the connecting block 751. The end of the pull rope 74 connected with the disc 71 is eccentrically connected. A second spring 77 is arranged outside the pull rod 75. One end of the second spring 77 is fixed to the piston type suction member 76, and the other end of the second spring 77 is fixed to the inner wall of the suction cylinder 72.

[0068] The piston suction member 76 comprises an annular strip 761 connected by a rod and a piston plate 762 located at one end close to the pull rod 75, two semicircular hinged plates 763 are hinged in the annular strip 761, the distance between the annular strip 761 and the piston plate 762 is not less than the diameter of the dust collecting pipe, an inner stop strip 765 is fixed on the side of the semicircular hinged plate 763 facing the piston plate 762, the inner stop strip 765 makes the angle of the semicircular hinged plate 763 inward deflection not more than 45 degrees, so as to facilitate the reset of the semicircular hinged plate 763 to block the annular strip 761, and an outer stop block 764 is fixed on the side of the semicircular hinged plate 763 away from the piston plate 762, the setting of the outer stop block 764 makes the semicircular hinged plate 763 not outwardly turn over after blocking the annular strip 761.

[0069] Through the above, when the specific rod passes through the sand belt and the sand wheel cooperation sanding, with the rotation of the sand belt, the driving shaft drives the disc 71 to rotate, the oblique tension between the pull rope 74 and the pull rod 75 will generate an outward component force when the pull rope 74 rotates from the low end to the high end, which can pull the pull rod 75 outward, and then pull the piston plate 762 outward, the second spring 77 is compressed, and the elastic potential energy is stored, at this time the semicircular hinged plate 763 is deflected towards the piston plate 762 to open, at this time the internal pressure of the suction cylinder 72 is reduced, forming a negative pressure environment relative to the outside, the dust generated in the sanding operation is sucked into the dust collecting cylinder 73 through the dust collecting pipe under the adsorption of negative pressure, and finally the collection is completed;

[0070] When the disc 71 continues to rotate, the pull rope 74 gradually rotates from the high end to the low end, the pull force of the pull rope 74 on the pull rod 75 gradually weakens until disappears, at this time the second spring 77 in the compressed state releases the stored elastic potential energy and generates an inward thrust to push the piston plate 762 to move inward along the axial direction, as the piston plate 762 moves inward, the internal space of the suction cylinder 72 gradually reduces, and the air pressure rises, at this time the semicircular hinged plate 763 is deflected towards the annular strip 761 and closely adheres to it, so as to block the channel, avoid the collected dust in the suction cylinder 72 from being pressed out in the opposite direction under the action of air pressure, and ensure that the dust can be stably stored in the dust collecting cylinder 73. This periodic and cyclic operation, the pull rope 74 pulls the piston plate 762 outward to form a negative pressure to suck dust, and the second spring 77 resets to push the piston plate 762 inward to block the channel to prevent dust from flowing backward. Without additional installation of traditional fan equipment, dust collection can be realized only by linkage of mechanical structure, which not only simplifies the overall structure of the equipment, reduces the energy consumption cost caused by the operation of the fan, but also reduces the additional investment caused by the maintenance of the fan, cleans the sanding operation environment to a certain extent, and improves the economy and practicability of the equipment.

[0071] The solutions of the present application have been described in detail above with reference to the accompanying drawings. In the above examples, the description of each example is focused on a certain aspect, and the parts not described in detail in a certain example can be referred to the relevant description of other examples. It should also be appreciated by those skilled in the art that the actions and modules involved in the description are not necessarily essential to the present application. In addition, it can be understood that the steps in the method of the embodiments of the present application can be adjusted, combined and reduced in sequence according to actual needs, and the structure of the device in the embodiments of the present application can be combined, divided and reduced according to actual needs.

[0072] The above has described various embodiments of the present application, and the above description is exemplary and is not exhaustive and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical application or improvement of technology in the market, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.

Claims

1. An automatic feeding type bar sanding device, comprising a guide table (1) and a feeding table (2), a pushing rod (101) is arranged on the guide table (1), and a sand belt machine (3) and a sand wheel machine (4) are oppositely arranged on both sides of the guide table (1) near a discharging end, characterized in that, Also include: Feeding assembly (5) is installed in the feeding end of the feeding table (2), used for orderly guiding and delivering the inclined bar to the feeding table (2); The second pressing mechanism (62) is provided on the guide table (1), and the second pressing mechanism (62) has a liftable bar pressing part, when the pushing rod (101) pushes the bar to perform sanding work, the first pressing mechanism (61) synchronously acts and extrudes the second pressing mechanism (62), so that the bar pressing part presses the bar pushed by the pushing rod (101); The dust absorption assembly (7) is connected to the driving shaft of the belt sander (3), and the dust generated during the operation of the belt sander (3) is synchronously sucked through the dust absorption assembly (7), and the suction frequency changes synchronously with the operation speed of the belt sander (3).

2. The automatic bar feeding sander of claim 1, wherein, The feeding assembly (5) comprises: The material frame (51) is fixed on the end of the feeding table (2), the outer wall of the material frame (51) is provided with a discharge port (53), and the bottom end of the discharge port (53) is flush with the guide slope of the feeding table (2); The motor (52) is installed on the outer end of the material frame (51), and the output end of the motor (52) is connected with a connecting rod (54), and the connecting rod (54) is fixed with a material stirring strip (55).

3. The automatic bar feeding sander of claim 1, wherein, The first pressing mechanism (61) comprises: The L-shaped strip (611) is fixed at one end of the telescopic end of the pushing rod (101); The pressing strip (612) is fixed on the lower end surface of the horizontal section of the L-shaped strip (611), and the end of the pressing strip (612) is provided with a downward inclined surface (613).

4. The automatic bar feeding sander of claim 3, wherein The second pressing mechanism (62) comprises: The vertical plate (621) is fixed on the upper end surface of the guide table (1) and away from the feeding table (2), and the vertical plate is provided with a through groove; The arc-shaped pressing plate (622) is fixed on one side of the arc-shaped pressing plate (622) and penetrates through the through groove; The convex block (623) is fixed on the upper end surface of the arc-shaped pressing plate (622), and the convex block (623) is provided with a pressure receiving inclined surface matched with the downward inclined surface (613); The elastic guide (625) is arranged in the through groove and connected with the convex plate (624).

5. The automatic bar feeding sander of claim 4, wherein, The elastic guide (625) comprises a guide rod (6251) and a first spring (6252), the guide rod (6251) vertically penetrates the convex plate (624), and the first spring (6252) is sleeved outside the guide rod (6251), and the first spring (6252) is located at the lower end surface of the convex plate (624).

6. The automatic bar feeding sander of claim 4, wherein, The lower end surface of the arc-shaped pressing plate (622) is provided with a guide wheel (626) rolling along the length direction of the guide table (1).

7. The automatic bar feeding sander of claim 1, wherein, The dust absorption assembly (7) comprises: The disc (71) is connected with the driving shaft of the belt sander (3) through a connecting shaft; The suction cylinder (72) is connected with the dust collecting cylinder (73) through the dust collecting pipe at the bottom end. A pull rod (75) is arranged in the suction cylinder (72), and an outer end of the pull rod (75) is fixed with a connecting block (751), and an inner end of the pull rod (75) is mounted with a piston suction piece (76); A pull rope (74) is connected between the disc (71) and the connecting block (751), and an end of the pull rope (74) connected with the disc (71) is eccentrically connected; A second spring (77) is sleeved on the outer portion of the pull rod (75), and one end of the second spring (77) is fixed to the piston suction piece (76), and the other end of the second spring (77) is fixed to the inner wall of the suction cylinder (72).

8. The automatic bar feeding sander of claim 7, wherein, The piston suction piece (76) comprises an annular strip (761) and a piston plate (762) connected through a rod body, the piston plate (762) is located at one end close to the pull rod (75), two semicircular hinged plates (763) are hinged in the annular strip (761), and the distance between the annular strip (761) and the piston plate (762) is not less than the diameter of the dust collecting pipe.

9. The automatic bar feeding sander of claim 8, wherein, An inner blocking strip (765) is fixed to one side of the semicircular hinged plate (763) facing the piston plate (762), and an outer blocking block (764) is fixed to the other side of the semicircular hinged plate (763) away from the piston plate (762).

10. The automatic bar feeding sander of claim 1, wherein, The feeding table (2) comprises a material guiding inclined table (21), and a liftable movable blocking strip (22) is arranged at a discharging end of the material guiding inclined table (21).

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