Round rod automatic sanding machine

Abstract

The present invention relates to the technical field of equipment for processing wood round rods, and more particularly to an automatic sanding machine for round rods. By designing a hopper structure with a hollowed-out portion in the middle of an automatic feeding assembly, and designing two or more material-discharging ratchets and two or more mutually parallel material-discharging rods in the hollowed-out portion, the round rods can automatically drop horizontally and smoothly fall one by one into a chute. A pushing cylinder is used to push the round rods in the chute into a circular tube. The rotation of the grinding wheel body generates friction on the circumferential surface of the round rods, which drives the round rods to move forward in a spiral within the circular tube. As the round rods move forward in a spiral, the circumferential surface of the round rods is fully sanded. By designing a sanding machine body, a conveying channel, and an automatic feeding assembly structure with a specific structure and positional relationship, stable and automatic feeding of round rods is achieved, thereby automatically completing efficient and automatic sanding processing of a large number of round rods.

Description

Technical Field

[0001] The invention relates to the technical field of wood round bar processing equipment, in particular to an automatic round bar sanding machine. Background Art

[0002] After the wood round bar is processed and shaped, its surface needs to be sanded.

[0003] The Chinese patent with authorization announcement number CN203712476U discloses a round rod sander, including a frame, on which a grinding wheel assembly, a grinding belt assembly and a conveying channel are arranged, the grinding wheel assembly includes a grinding wheel, a grinding wheel frame and a grinding wheel motor, the grinding wheel motor is fixed on the grinding wheel frame, the grinding wheel is rotatably arranged on the grinding wheel frame and driven by the grinding wheel motor, the grinding wheel frame is fixed on the frame, the sanding belt assembly includes a sanding belt, a rotating wheel and a sanding belt motor, the sanding belt motor is fixed on the frame, the sanding belt is straddled on the transmission wheel, the sanding belt motor drives the transmission wheel to rotate and further drives the sanding belt to rotate; the grinding wheel and the sanding belt are respectively arranged on both sides of the conveying channel, the sanding belt on one side is placed vertically, and the grinding wheel is inclined toward the rear of the conveying channel, and the surface of the roller can be sanded by the elastically arranged sanding belt.

[0004] However, in the structure of the above patent, extremely high stability is required for the feeding of round rods. A slight deviation in the feeding position will cause the round rods to be stuck. Considering that the existing automatic feeding mechanism is difficult to meet the stable feeding needs of the above round rod sanding machine, it is necessary to rely on manual labor to feed the round rods to be sanded into the conveying channel, and the automation of round rod processing cannot be achieved, resulting in low work efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: how to improve the structure of the round rod sander to achieve stable and automatic feeding of the round rods, thereby automatically completing efficient and automatic sanding processing of a large number of round rods.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] An automatic round rod sander, comprising a frame, a sander body, a conveying channel and an automatic feeding assembly;

[0008] The conveying channel includes a circular tube, one side of the circular tube is provided with one or more first openings, and the other side of the circular tube is provided with one or more second openings;

[0009] The sanding machine body includes a sanding belt body and a grinding wheel body, the sanding belt body is rotatably arranged at the first opening, the grinding wheel body is rotatably arranged at the second opening, and the angle between the axis of the grinding wheel body and the axis of the circular tube is greater than 0 degrees;

[0010] The automatic feeding assembly includes a feeding chute, a pushing cylinder, a hopper body, a feeding rod and a feeding ratchet;

[0011] The material chute is provided at one end of the circular tube in the first direction, the hopper body is located above the material chute, a hollow portion is provided in the middle of the material chute, two or more material-discharging ratchets are rotatably connected to the frame, the material-discharging ratchets are located in the hollow portion, and two or more material-discharging rods are parallel to each other and swingably connected to the frame, the material-discharging rods are located in the hollow portion;

[0012] The pushing cylinder is located at one end of the blanking chute in the first direction, and is used to push a round rod dropped into the blanking chute into the round tube.

[0013] Furthermore, in the above-mentioned round rod automatic sanding machine structure, the hopper body includes an upper section and a lower section, the width of the upper section gradually decreases from top to bottom, and the width of the lower section is the same as the inner diameter of the round tube.

[0014] Furthermore, in the above-mentioned round rod automatic sanding machine structure, the conveying channel includes a tapered feed port, and the tapered feed port is arranged at one end of the round tube in the first direction.

[0015] Furthermore, in the above-mentioned round rod automatic sanding machine structure, the material-discharging ratchet is coaxially connected to the first transmission rod, the first transmission rod is rotatably connected to the frame, the first transmission rod is coaxially sleeved with the first pulley, and also includes a second pulley and a material-discharging drive motor, the material-discharging drive motor is transmission-connected to the second pulley, and the first pulley and the second pulley are transmission-connected via a transmission belt.

[0016] Furthermore, in the above-mentioned round rod automatic sanding machine structure, one end of the material moving rod is connected to the second transmission rod, the second transmission rod is parallel to the first transmission rod, the first transmission rod is rotatably connected to the frame, the first transmission rod is connected to a polygonal limit block, the first transmission rod is connected to a rocker arm, one end of the rocker arm is connected to a transmission wheel, and the transmission wheel abuts against the upper part of the polygonal limit block.

[0017] Furthermore, in the above-mentioned round rod automatic sanding machine structure, the shape of the polygonal limit block is a regular polygon.

[0018] Furthermore, in the above-mentioned round rod automatic sanding machine structure, the shape of the polygonal limit block is a square.

[0019] Furthermore, the above-mentioned round rod automatic sanding machine structure also includes an elastic member, the upper end of the elastic member is connected to the middle part of the rocker arm, and the lower end of the elastic member is connected to the frame.

[0020] Furthermore, in the above-mentioned round rod automatic sanding machine structure, the side of the material-moving ratchet tooth portion close to the hopper body is located between the upper section and the lower section of the hopper body, and the free end of the material-moving rod is located below the material-moving ratchet.

[0021] Furthermore, in the above-mentioned round rod automatic sanding machine structure, the angle between the upper side plate and the lower side plate of the hopper body on the side close to the material-discharging ratchet is 135-160 degrees.

[0022] The beneficial effects of the present invention are as follows: by designing a hopper structure with a hollowed-out portion in the middle in the automatic feeding assembly, and designing two or more material-discharging ratchets and two or more mutually parallel material-discharging rods in the hollowed-out portion, the material-discharging ratchet rotates in a direction opposite to the tooth end of the material-discharging ratchet, so that when the material-discharging ratchet rotates, its tooth end continuously contacts the round rod in the hopper body, and at the same time, the material-discharging rod swings back and forth up and down, and the material-discharging rod continuously contacts the round rod in the hopper body, and the round rod can be automatically fed into the hopper body through the mutual cooperation of the material-discharging rod and the material-discharging ratchet. They fall horizontally and fall smoothly into the trough one by one. The pushing cylinder is used to push the round rod in the trough into the round tube, so that the front end of the round rod contacts the grinding wheel body through the first opening. Due to the inclined setting of the grinding wheel body, the rotation of the grinding wheel body generates friction on the circumferential surface of the round rod, and the friction drives the round rod to move forward in a spiral in the round tube. When the round rod moves forward in a spiral, the other side of the circumferential surface contacts the sanding belt body through the second opening, generating sliding friction. Through the mutual cooperation of the grinding wheel body and the sanding belt body, the circumferential surface of the round rod is fully sanded.

[0023] By designing the sanding machine body, conveying channel and automatic feeding component structure with specific structure and position relationship, stable and automatic feeding of round bars can be achieved, thereby automatically completing efficient and automatic sanding processing of a large number of round bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of an automatic round rod sander according to a specific embodiment of the present invention;

[0025] Figure 2 for Figure 1 A magnified view of part A;

[0026] Figure 3 This is a front view of an automatic round rod sander according to a specific embodiment of the present invention;

[0027] Figure 4 for Figure 3 B-direction cross-section diagram;

[0028] Figure 5 It is a right side view of an automatic round rod sander according to a specific embodiment of the present invention;

[0029] Description of labels:

[0030] 1. Frame;

[0031] 2. Sanding machine body; 21. Sanding belt body; 22. Grinding wheel body;

[0032] 3. Conveying channel; 31. Circular tube; 32. First opening; 33. Second opening; 34. Conical feed port;

[0033] 4. Automatic feeding assembly; 41. Feed chute; 42. Push cylinder; 43. Hopper body; 431. Hollowing portion; 432. Upper section; 433. Lower section; 44. Feeding rod; 45. Feeding ratchet;

[0034] 51. First transmission rod; 52. First pulley; 53. Material-dispensing drive motor; 54. Second pulley; 55. Transmission belt; 56. Second transmission rod; 57. Polygonal limit block; 58. Rocker arm; 581. Transmission wheel; 59. Elastic member. DETAILED DESCRIPTION

[0035] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0036] Please refer to Figures 1 to 5 , a specific embodiment of the present invention relates to an automatic round rod sander, comprising a frame 1, a sander body 2, a conveying channel 3 and an automatic feeding assembly 4;

[0037] The conveying channel 3 includes a circular tube 31 , one side of the circular tube 31 is provided with one or more first openings 32 , and the other side of the circular tube 31 is provided with one or more second openings 33 ;

[0038] The sanding machine body 2 includes a sanding belt body 21 and a grinding wheel body 22. The sanding belt body 21 is rotatably disposed at the first opening 32, and the grinding wheel body 22 is rotatably disposed at the second opening 33. The angle between the axis of the grinding wheel body 22 and the axis of the circular tube 31 is greater than 0 degrees.

[0039] The automatic feeding assembly 4 includes a feeding chute 41, a pushing cylinder 42, a hopper body 43, a feeding rod 44 and a feeding ratchet 45;

[0040] The material chute 41 is provided at one end of the circular tube 31 in the first direction, the hopper body 43 is located above the material chute 41, a hollow portion 431 is provided in the middle of the material chute 41, two or more material-discharging ratchets 45 are rotatably connected to the frame 1, the material-discharging ratchets 45 are located in the hollow portion 431, and two or more material-discharging rods 44 are parallel to each other and swingably connected to the frame 1, the material-discharging rods 44 are located in the hollow portion 431;

[0041] The pushing cylinder 42 is located at one end of the blanking chute 41 in the first direction. The pushing cylinder 42 is used to push a round rod dropped into the blanking chute 41 into the round tube 31 .

[0042] Automatic sanding method of the above round rod automatic sander:

[0043] Arrange the round bars to be processed and place them neatly in the hopper body 43. When each round bar is in the hopper body 43, its axis is horizontal.

[0044] The material-dispensing ratchet 45 is driven to rotate, and the material-dispensing rod 44 is driven to swing, so that the round bars are neatly stacked and fall into the lower section 433 of the hopper body 43. The round bars are stacked in a single vertical direction in the lower section 433, and the bottom round bar falls into the chute 41;

[0045] The pushing cylinder 42 is driven to push the single round rod that falls into the blanking chute 41 into the circular tube 31, so that the front end of the round rod contacts the grinding wheel body 22 through the first opening 32. Since the grinding wheel body 22 is tilted, the rotation of the grinding wheel body 22 generates friction on the circumferential surface of the round rod, and the friction drives the round rod to move forward in a spiral in the circular tube 31. When the round rod moves forward in a spiral, the other side of the circumferential surface contacts the sanding belt body 21 through the second opening 33, generating sliding friction. Through the mutual cooperation of the grinding wheel body 22 and the sanding belt body 21, the circumferential surface of the round rod is fully sanded.

[0046] In the above-mentioned round rod sander structure, preferably, an axially adjustable structure of the grinding wheel body 22 can also be designed. The speed of the round rod spiral advance can be adjusted by adjusting the axial direction of the grinding wheel body 22, so that it can be flexibly set according to the degree of sanding required on the circumferential surface of the round rod. The larger the inclination angle of the grinding wheel body 22, the faster the speed of the round rod spiral advance, and the shorter the contact time between the circumferential surface of the round rod and the sanding belt body 21.

[0047] In the above structure, a hopper structure with a hollow portion 431 in the middle is designed in the automatic feeding component 4, and two or more material-discharging ratchets 45 and two or more mutually parallel material-discharging rods 44 are designed in the hollow portion 431. By utilizing the rotation of the material-discharging ratchet 45, the rotation direction of the material-discharging ratchet 45 is opposite to the direction of the tooth end of the material-discharging ratchet 45, so that when the material-discharging ratchet 45 rotates, its tooth end continuously contacts the round rod in the hopper body 43. At the same time, the material-discharging rod 44 swings back and forth up and down, and the material-discharging rod 44 continuously contacts the round rod in the hopper body 43. Through the mutual cooperation of the material-discharging rod 44 and the material-discharging ratchet 45, the round rod can be automatically leveled. The round rods fall down and fall smoothly into the material trough 41 one by one to avoid material jamming. The pushing cylinder 42 is used to push the round rods in the material trough 41 into the circular tube 31, so that the front end of the round rod contacts the grinding wheel body 22 through the first opening 32. Since the grinding wheel body 22 is tilted, the rotation of the grinding wheel body 22 generates friction on the circumferential surface of the round rod, and the friction drives the round rod to move forward in a spiral in the circular tube 31. When the round rod moves forward in a spiral, the other side of the circumferential surface contacts the sand belt body 21 through the second opening 33, generating sliding friction. Through the mutual cooperation of the grinding wheel body 22 and the sand belt body 21, the circumferential surface of the round rod is fully sanded.

[0048] By designing the sanding machine body 2, the conveying channel 3 and the automatic feeding assembly 4 with a specific structure and position relationship, stable and automatic feeding of round bars can be achieved, thereby automatically completing efficient and automatic sanding processing of a large number of round bars.

[0049] Furthermore, as a preferred embodiment, the hopper body 43 includes an upper section 432 and a lower section 433 . The width of the upper section 432 gradually decreases from top to bottom, and the width of the lower section 433 is the same as the inner diameter of the circular tube 31 .

[0050] In the above structure, the upper section 432 of the hopper body 43 is used to stack round rods. The width of the upper section 432 gradually decreases from top to bottom, which can store more round rods to be processed and is conducive to subsequent blanking; and the width of the lower section 433 is the same as the inner diameter of the round tube 31, so that it can only accommodate a single round rod falling horizontally into the lower section 433 of the hopper body 43.

[0051] Furthermore, as a preferred embodiment, the conveying channel 3 includes a tapered feed port 34 , and the tapered feed port 34 is provided at one end of the circular tube 31 in the first direction.

[0052] In the above structure, by providing a tapered feed port 34 at one end in the first direction of the conveying channel 3, a guiding role can be played, which better ensures that the pushing cylinder 42 pushes the single round rod of the blanking trough 41 into the round tube 31. Further, as a preferred embodiment, the material-dispensing ratchet 45 is coaxially connected to the first transmission rod 51, and the first transmission rod 51 is rotatably connected to the frame 1. The first transmission rod 51 is coaxially sleeved with a first pulley 52, and also includes a second pulley 54 and a material-dispensing drive motor 53. The material-dispensing drive motor 53 is transmission-connected to the second pulley 54, and the first pulley 52 and the second pulley 54 are transmission-connected via a transmission belt 55.

[0053] In the above structure, by controlling the driving motor to rotate, the first transmission rod 51 can be driven to rotate, thereby driving the material-moving ratchet 45 to rotate.

[0054] Further, as a preferred embodiment, one end of the material removal rod 44 is connected to a second transmission rod 56, the second transmission rod 56 is parallel to the first transmission rod 51, the first transmission rod 51 is rotatably connected to the frame 1, the first transmission rod 51 is connected to a polygonal limit block 57, the first transmission rod 51 is connected to a rocker rod 58, one end of the rocker rod 58 is connected to a transmission wheel 581, and the transmission wheel 581 abuts against the upper part of the polygonal limit block 57.

[0055] In the above structure, refer to Figure 5 The transmission wheel 581 connected by the rocker arm 58 and the polygonal limit block 57 cooperates so that every time the first transmission rod 51 rotates one circle, the transmission wheel 581 resting on the polygonal limit block 57 will jump up and down the number of polygonal edges and corners, thereby causing the material tapping rod 44 to swing the number of polygonal edges and corners.

[0056] Furthermore, as a preferred embodiment, the polygonal limiting block 57 is in the shape of a regular polygon.

[0057] Preferably, the polygonal limiting block 57 is in the shape of a square.

[0058] In the above structure, every time the first transmission rod 51 rotates one circle, the transmission wheel 581 abutting on the polygonal limit block 57 will jump up and down four times, thereby causing the material tapping rod 44 to swing four times.

[0059] Furthermore, as a preferred embodiment, it further includes an elastic member 59 , the upper end of the elastic member 59 is connected to the middle of the rocker 58 , and the lower end of the elastic member 59 is connected to the frame 1 .

[0060] In the above structure, refer to Figure 5By providing an elastic member 59 (spring), it can be ensured that the transmission wheel 581 always rests on the polygonal limit block 57.

[0061] Furthermore, as a preferred embodiment, the tooth portion of the material-moving ratchet 45 close to the side of the hopper body 43 is located between the upper section 432 and the lower section 433 of the hopper body 43 , and the free end of the material-moving rod 44 is located below the material-moving ratchet 45 .

[0062] The above structure enables the round bars stacked in the hopper body 43 to be horizontally and stably arranged one by one in the lower section 433 through the rotation of the material shifting ratchet 45, thereby preventing the round bars from getting stuck when falling into the chute 41.

[0063] Furthermore, as a preferred embodiment, the angle between the side plate of the upper section 432 and the side plate of the lower section 433 of the hopper body 43 on the side close to the material-discharging ratchet 45 is 135-160 degrees.

[0064] Please refer to Figures 1 to 5 , embodiment 1 of the present invention is:

[0065] An automatic sanding machine for round rods, comprising a frame 1, a sanding machine body 2, a conveying channel 3 and an automatic feeding assembly 4; the conveying channel 3 comprises a circular tube 31, one side of the circular tube 31 is provided with one or more first openings 32, and the other side of the circular tube 31 is provided with one or more second openings 33; the sanding machine body 2 comprises a sanding belt body 21 and a grinding wheel body 22, the sanding belt body 21 is rotatably arranged at the first opening 32, the grinding wheel body 22 is rotatably arranged at the second opening 33, and the angle between the axis of the grinding wheel body 22 and the axis of the circular tube 31 is greater than 0 degrees; the automatic feeding assembly 4 comprises a blanking chute 41, a pushing cylinder 42, The hopper body 43, the material discharging rod 44, and the material discharging ratchet 45 are provided. The material discharging chute 41 is provided at one end of the circular tube 31 in the first direction. The hopper body 43 is located above the material discharging chute 41. A hollow portion 431 is provided in the middle of the material discharging chute 41. Two or more material discharging ratchet wheels 45 are rotatably connected to the frame 1. The material discharging ratchet wheels 45 are located in the hollow portion 431. Two or more material discharging rods 44 are parallel to each other and swingably connected to the frame 1. The material discharging rods 44 are located in the hollow portion 431. The pushing cylinder 42 is located at one end of the material discharging chute 41 in the first direction. The pushing cylinder 42 is used to push a round rod dropped into the material discharging chute 41 into the circular tube 31. The hopper body 43 includes an upper section 432 and a lower section 433. The width of the upper section 432 gradually decreases from top to bottom, and the width of the lower section 433 is the same as the inner diameter of the circular tube 31. The conveying channel 3 includes a tapered feed port 34, which is disposed at one end of the circular tube 31 in the first direction. The material-discharging ratchet 45 is coaxially connected to a first transmission rod 51, which is rotatably connected to the frame 1. The first transmission rod 51 is coaxially sleeved with a first pulley 52, and further includes a second pulley 54 and a material-discharging drive motor 53. The material-discharging drive motor 53 is transmission-connected to the second pulley 54, and the first pulley 52 and the second pulley 54 are transmission-connected via a transmission belt 55. One end of the material-discharging rod 44 is connected to a second transmission rod 56, which is parallel to the first transmission rod 51 and rotatably connected to the frame 1. The first transmission rod 51 is connected to a polygonal stopper 57, which is connected to a rocker arm 58. One end of the rocker arm 58 is connected to a transmission wheel 581, which abuts against the upper portion of the polygonal stopper 57. The polygonal stopper 57 is in the shape of a regular polygon. The polygonal stopper 57 is square in shape. It also includes an elastic member 59, the upper end of which is connected to the middle portion of the rocker 58, and the lower end of which is connected to the frame 1. The tooth portion of the material-discharging ratchet 45, which is located near the hopper body 43, is located between the upper section 432 and the lower section 433 of the hopper body 43. The free end of the material-discharging rod 44 is located below the material-discharging ratchet 45.The angle between the side plate of the upper section 432 and the side plate of the lower section 433 of the hopper body 43 on the side close to the material-discharging ratchet 45 is 135-160 degrees.

[0066] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Round rod automatic sanding machine, characterized in that, It includes a frame, a sanding machine body, a conveying channel and an automatic feeding component; The conveying channel includes a circular tube, one side of the circular tube is provided with one or more first openings, and the other side of the circular tube is provided with one or more second openings; The sanding machine body includes a sanding belt body and a grinding wheel body, the sanding belt body is rotatably arranged at the first opening, the grinding wheel body is rotatably arranged at the second opening, and the angle between the axis of the grinding wheel body and the axis of the circular tube is greater than 0 degrees; The automatic feeding assembly includes a feeding chute, a pushing cylinder, a hopper body, a feeding rod and a feeding ratchet; The material chute is provided at one end of the circular tube in the first direction, the hopper body is located above the material chute, a hollow portion is provided in the middle of the material chute, two or more material-discharging ratchets are rotatably connected to the frame, the material-discharging ratchets are located in the hollow portion, and two or more material-discharging rods are parallel to each other and swingably connected to the frame, the material-discharging rods are located in the hollow portion; The pushing cylinder is located at one end of the blanking chute in the first direction, and is used to push a round rod that falls into the blanking chute into the round tube; The material-discharging ratchet is coaxially connected to a first transmission rod, the first transmission rod is rotatably connected to the frame, the first transmission rod is coaxially sleeved with a first pulley, and further includes a second pulley and a material-discharging drive motor, the material-discharging drive motor is transmission-connected to the second pulley, and the first pulley and the second pulley are transmission-connected via a transmission belt; One end of the material-moving rod is connected to a second transmission rod, the second transmission rod is parallel to the first transmission rod, the second transmission rod is rotatably connected to the frame, the first transmission rod is connected to a polygonal limit block, the second transmission rod is connected to a rocker, one end of the rocker is connected to a transmission wheel, and the transmission wheel abuts against the upper part of the polygonal limit block; The side of the tooth portion of the material-moving ratchet wheel close to the hopper body is located between the upper section and the lower section of the hopper body, and the free end of the material-moving rod is located below the material-moving ratchet wheel.

2. The round rod automatic sanding machine according to claim 1, characterized in that: The hopper body comprises an upper section and a lower section, the width of the upper section gradually decreases from top to bottom, and the width of the lower section is the same as the inner diameter of the circular tube.

3. The round rod automatic sanding machine according to claim 1, characterized in that: The conveying channel includes a tapered feed port, and the tapered feed port is arranged at one end of the circular tube in the first direction.

4. The round rod automatic sanding machine according to claim 1, characterized in that: The shape of the polygonal limiting block is a regular polygon.

5. The round rod automatic sanding machine according to claim 1, characterized in that: The shape of the polygonal limiting block is a square.

6. The round rod automatic sanding machine according to claim 1, characterized in that: It also includes an elastic member, the upper end of which is connected to the middle part of the rocker arm, and the lower end of which is connected to the frame.

7. The round rod automatic sanding machine according to claim 1, characterized in that: The angle between the upper side plate and the lower side plate of the hopper body on the side close to the material-discharging ratchet is 135-160 degrees.

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