A deburring and grinding machine for the surface of semi-finished wooden doors and its usage method

Abstract

The present invention relates to the technical field of wooden door production, and specifically to a deburring and grinding machine for the surface of semi-finished wooden doors and its usage method, including a housing, and openings are provided on both the front and rear sides of the housing. For this deburring and grinding machine for the surface of semi-finished wooden doors and its usage method, the rotating secondary cylinder pushes the convex block and the sliding ring through the wave groove to perform translational movement in the left and right directions. The two sliding rings perform reciprocating relative and opposite displacements, and respectively drive the upper rubbing strip and the lower rubbing strip to move synchronously. The burrs on the surface of the forward-moving door panel gradually move onto the lower rubbing strip. Among them, the harder burrs are directly rubbed and broken by the left and right moving upper rubbing strip and lower rubbing strip. Compared with the common method of using sandpaper and sand discs to rotate and grind off burrs, using the horizontal shearing force to rub and break hard burrs will not cause excessive wear to the component itself, avoiding the need to regularly replace consumables, and the rubbing and breaking occurs instantaneously, rather than using friction to polish layer by layer, thus improving the deburring efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of wooden door production, in particular to a surface deburring and grinding machine for semi-finished wooden doors and a method of using the same. Background Art

[0002] During the wood cutting process, it is easy to produce many soft and fine lignin fibers (wood hair) that have been cut but not completely separated from the wood surface. Although the wood surface has been finely planed, sanded, and especially mechanically polished, the smoothness can meet certain requirements, but if you look closely, you will still find some wood hair left on the wood surface.

[0003] The formation of wood lint is closely related to the wood's fiber structure and processing conditions. Most wood species, especially elm, produce lint. Under the pressure of abrasive grinding, these lints often curl and lie flat, becoming hidden and difficult to reliably remove. Once the finishing dye solution, shellac, or other solvents absorb, they rapidly swell and stand upright, resulting in an uneven and rough surface and affecting the smoothness of the paint film.

[0004] In view of this, we propose a deburring and grinding machine for the surface of a semi-finished wooden door and a method for using the same. Summary of the Invention

[0005] The purpose of the present invention is to provide a deburring and grinding machine for the surface of a semi-finished wooden door and a method for using the same, so as to solve the problem raised in the above-mentioned background art that wood hair often curls, lies down and hides under the action of grinding pressure, and cannot be removed stably. To achieve the above-mentioned purpose, the present invention provides the following technical solution: A deburring and grinding machine for the surface of a semi-finished wooden door, comprising a shell, the front and rear sides of the shell are both provided with openings, and the interior of the shell is connected to rollers that rotate in the left and right directions, the number of the rollers is four, and the four rollers are respectively arranged on the front and rear sides of the shell in groups of two.

[0006] The rollers of a single group are symmetrically arranged in an upper and lower manner, and the wooden board is sandwiched and transported between the two groups of rollers and moves from the back to the front.

[0007] Two hair removers are arranged inside the shell, and the two hair removers are symmetrically arranged along the upper and lower surfaces of the wooden board, and the two rollers at the rear side respectively drive the hair removers on the same side.

[0008] Preferably, the hair remover includes a secondary cylinder connected to rotate in the left-right direction along the inside of the shell, and bristles are fixedly provided on the surface of the secondary cylinder.

[0009] The ends of the auxiliary cylinder and the rear roller are fixedly sleeved with corresponding end gears, and the inner wall of the shell is rotatably connected with a transmission gear located between the two end gears, and the transmission gear is meshed with the two end gears for transmission.

[0010] Both ends of the auxiliary cylinder are movably sleeved with slip rings, and closed-loop wavy grooves are annularly formed on the ring surfaces at both ends of the auxiliary cylinder. A convex block is protruded from the inner ring of the slip ring, and the convex block is located in the wavy groove. When the auxiliary cylinder rotates, the wavy groove pushes the convex block and the slip ring to translate in the left and right directions.

[0011] An upper rubbing strip and a lower rubbing strip are respectively arranged in the left and right directions inside the housing, and both the upper rubbing strip and the lower rubbing strip are triangular strips. The upper rubbing strip and the lower rubbing strip are arranged in an up-and-down staggered manner with their inclined surfaces facing each other.

[0012] Two brackets corresponding to the upper rubbing strip and the lower rubbing strip are fixedly installed inside the housing, and the upper rubbing strip and the lower rubbing strip are respectively slidably connected along the two brackets. The left slip ring is fixedly connected to the upper rubbing strip through a connecting rod, and the right slip ring is also fixedly connected to the lower rubbing strip through a connecting rod.

[0013] Chip collecting members are arranged on the upper rubbing strip and the lower rubbing strip, and hair twisting members are arranged on the front sides of the upper rubbing strip and the lower rubbing strip.

[0014] Preferably, the chip collecting members include convex ribs respectively arranged on the upper rubbing strip and the lower rubbing strip, and the number of the convex ribs is several. The several convex ribs are equally divided on the opposite inclined surfaces of the upper rubbing strip and the lower rubbing strip.

[0015] Axle heads are fixedly connected to the opposite ends of the two groups of convex ribs. Axle holes are formed at the positions corresponding to the axle heads on the surfaces of the upper rubbing strip and the lower rubbing strip. The two groups of convex ribs are rotatably connected in the corresponding axle holes through the axle heads.

[0016] Fan-shaped grooves are formed on the side walls of the axle holes. A limiting head is protruded from the surface of the axle head, and the limiting head is located in the fan-shaped groove.

[0017] A transverse channel is formed at the top edge of the lower rubbing strip, and a triangular block is arranged at the bottom inside the transverse channel.

[0018] Preferably, the hair twisting members include a support beam fixedly installed in the housing in the left and right directions, and the support beam is located in front of the lower rubbing strip.

[0019] Both ends of the support beam are movably sleeved with ring seats, and both sides of the connecting rods further extend and are respectively fixedly connected to the two ring seats.

[0020] Two winding rolls are rotatably connected to the opposite ends of the two ring seats. Both winding rolls are spiral structures, and the two winding rolls are screwed together along the spiral gaps.

[0021] Preferably, a motor corresponding to the two rear drums is fixedly installed on the surface of the housing, and the rotating shaft of the motor is connected to the drum shaft of the corresponding drum in a coaxial manner.

[0022] Preferably, the top of the slip ring is fixedly connected to an arch frame for combing the bristles.

[0023] Preferably, a torsion spring is sleeved on the surface of the shaft head and inside the shaft hole, and the torsion spring limits the ridge to a neutral position.

[0024] A method for using a deburring and grinding machine for a semi-finished wooden door surface comprises the following steps:

[0025] S1. Feed the semi-finished door panel to be processed from the rear opening of the shell, so that the door panel enters between the two rear rollers and is sent out from the front opening of the shell;

[0026] S2. As the door panel moves within the housing, the rear roller uses the cooperation of the end gear and the transmission gear to drive the auxiliary roller to rotate faster than the roller. The roller uses the bristles on its surface to comb the soft burrs on the door panel surface toward the side facing the lower rubbing strip. At the same time, the rotating auxiliary roller pushes the protrusion and the slip ring to move horizontally through the wave groove. The slip rings on both sides perform reciprocating relative and opposite displacements, and respectively drive the upper and lower rubbing strips to move synchronously.

[0027] S3, the burrs on the surface of the door panel that moves forward gradually move to the lower rubbing strip, and the harder burrs are directly rubbed off by the upper and lower rubbing strips that move left and right;

[0028] S4. During the translation of the upper and lower rubbing bars, the ridges on their surfaces help increase the blocking force between the burrs and the upper and lower rubbing bars. When the two ridges collide with each other, the ridges are deflected accordingly by the shaft head. At this time, the ridges are relatively tilted, and the burrs that are broken between the upper and lower rubbing bars can be pushed upward into the horizontal channel along the tilted ridges.

[0029] S5. The soft burrs on the door panel surface that cannot be rubbed off are rubbed by the upper and lower rubbing strips, and some of the soft burrs are rubbed into thicker and harder soft hair nodes, which move with the door panel to the coil. At this time, the round seats on both sides are driven by the slip rings on both sides to perform reciprocating relative and opposite displacements, and the coils on the round seats move synchronously. The coils at both ends push each other along the gap of the rotation, so that the two coils rotate when moving horizontally, so that the gap between the oppositely rotating coils is used to rotate and shear the soft hair nodes on the door panel.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] In the present invention, the rotating secondary cylinder pushes the protrusion and the slip ring to translate in the left and right directions through the wave groove, and the slip rings on both sides perform reciprocating relative and opposite displacements, and respectively drive the upper and lower rubbing strips to move synchronously, and the burrs on the surface of the forward-moving door panel gradually move to the lower rubbing strip, among which the harder burrs are directly rubbed off by the upper and lower rubbing strips moving left and right. Compared with the common use of sandpaper and sanding disc to rotate and grind off burrs, using the horizontal shear force to rub off the hard burrs will not cause excessive wear on the component itself, avoids the regular replacement of consumables, and the rubbing and breaking occurs instantaneously, instead of using friction to grind layer by layer, thus improving the deburring efficiency.

[0032] In the present invention, by arranging ridges on the surfaces of the upper and lower rubbing strips, it helps to increase the blocking force of the hard burrs between the upper and lower rubbing strips, thereby increasing the stability of the force applied to the burrs. When the two ridges conflict with each other, the ridges use the shaft head to perform corresponding deflection. At this time, the ridges are relatively tilted, and the hard burrs rubbed off between the upper and lower rubbing strips can be pushed up into the horizontal channel along the inclined ridges, thereby realizing the collection of the currently removed burrs, without the operator having to clean the door panel and the equipment separately later, and at the same time, it can also avoid the removed burrs sticking to the surface of the door panel and affecting the deburring effect.

[0033] In the present invention, part of the soft burrs are rubbed into coarser and harder soft burrs by rubbing the upper rubbing strips with the lower rubbing strips, and move to the coil with the door panel. At this time, the round seats on both sides are driven by the slip rings on both sides to perform reciprocating relative and opposite displacements, and the coils on the round seats move synchronously. The coils at both ends push each other along the gap of the rotation, so that the two coils rotate when moving horizontally. In this way, the gap between the counter-rotating coils is used to rotate and shear the soft burrs on the door panel. Compared with friction removal, on the one hand, this measure can effectively separate the soft burrs on the door panel over a large area, and on the other hand, it will not cause excessive wear to other parts of the door panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0035] Figure 2 It is a cross-sectional view of the three-dimensional structure of the present invention;

[0036] Figure 3 For the present invention Figure 2 Schematic diagram of the three-dimensional structure of the middle roller and the hair remover;

[0037] Figure 4 For the present invention Figure 3 Schematic diagram of the local three-dimensional structure from the left perspective;

[0038] Figure 5 For the present invention Figure 3 Schematic diagram of the three-dimensional structure of the hair remover;

[0039] Figure 6 For the present invention Figure 5 Partial three-dimensional structure schematic diagram of the left side view;

[0040] Figure 7 For the present invention Figure 5 Three-dimensional structure cross-sectional view of the middle and lower rubbing bars;

[0041] Figure 8 For the present invention Figure 7 Enlarged view at position A in the middle;

[0042] Figure 9 Side cross-sectional view of the upper and lower rubbing bars of the present invention;

[0043] Figure 10 Exploded view of the winding in the present invention.

[0044] In the figure: 1, outer shell; 2, opening; 3, drum; 4, hair remover; 41, secondary drum; 42, brush; 43, end gear; 44, transmission gear; 45, slip ring; 46, wave groove; 47, convex block; 48, upper rubbing bar; 49, lower rubbing bar; 410, bracket; 411, chip collecting part; 4111, convex rib; 4112, shaft head; 4113, shaft hole; 4114, fan groove; 4115, limiting head; 4116, transverse canal; 4117, triangular block; 412, hair twisting part; 4121, support beam; 4122, ring seat; 4123, winding; 413, connecting rod. Specific embodiments

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0046] Please refer to Figures 1 to 10 , the present invention provides a technical solution: a deburring and polishing machine for the surface of semi-finished wooden doors, including an outer shell 1. Openings 2 are provided on both the front and rear sides of the outer shell 1, and a drum 3 is rotatably connected in the left-right direction inside the outer shell 1. The number of drums 3 is four, and the four drums 3 are arranged in two groups on the front and rear sides of the outer shell 1 respectively;

[0047] The single-group drums 3 are arranged symmetrically up and down. The wooden board is fed between the two groups of drums 3 from back to front. The semi-finished door panel to be processed is fed into the outer shell 1 through the rear opening 2, so that the door panel enters between the two rear drums 3 and is sent out through the front opening 2 of the outer shell 1;

[0048] Inside the housing 1, two hair removers 4 are provided, and the two hair removers 4 are symmetrically arranged along the upper and lower surfaces of the wooden board. The two rear rollers 3 respectively drive the hair removers 4 on the same side.

[0049] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 shown, the hair remover 4 includes a secondary cylinder 41 rotatably connected in the left - right direction inside the housing 1, and brush bristles 42 are fixedly arranged on the surface of the secondary cylinder 41;

[0050] At the ends of both the secondary cylinder 41 and the rear roller 3, corresponding end gears 43 are fixedly sleeved. A transmission gear 44 is rotatably connected to the inner side wall of the housing 1 between the two end gears 43, and the transmission gear 44 meshes with the two end gears 43 for transmission. The rear roller 3 uses the cooperation of the end gear 43 and the transmission gear 44 to drive the secondary cylinder 41 to rotate faster than the roller 3. The roller 3 combs the orientation of the soft burrs on the surface of the door panel through the brush bristles 42 on its surface;

[0051] Sliding rings 45 are movably sleeved at both ends of the secondary cylinder 41, and closed - loop wavy grooves 46 are annularly formed on the ring surfaces at both ends of the secondary cylinder 41. Protrusions 47 protrude from the inner circle of the sliding ring 45, and the protrusions 47 are located in the wavy grooves 46. When the secondary cylinder 41 rotates, it pushes the protrusions 47 and the sliding rings 45 to translate in the left - right direction through the wavy grooves 46;

[0052] Inside the housing 1, an upper rubbing strip 48 and a lower rubbing strip 49 are respectively arranged in the left - right direction. Both the upper rubbing strip 48 and the lower rubbing strip 49 are triangular strips, and the upper rubbing strip 48 and the lower rubbing strip 49 are arranged in an up - down offset manner with their inclined surfaces facing each other;

[0053] Two brackets 410 corresponding to the upper rubbing strip 48 and the lower rubbing strip 49 respectively are fixedly installed inside the housing 1. The upper rubbing strip 48 and the lower rubbing strip 49 are respectively slidably connected along the two brackets 410. The left - hand sliding ring 45 is fixedly connected to the upper rubbing strip 48 through a connecting rod 413, and the right - hand sliding ring 45 is also fixedly connected to the lower rubbing strip 49 through a connecting rod 413. The two sliding rings 45 perform reciprocating relative and opposite displacements, and respectively drive the upper rubbing strip 48 and the lower rubbing strip 49 to move synchronously;

[0054] Debris collection parts 411 are arranged on the upper rubbing strip 48 and the lower rubbing strip 49, and hair - wringing parts 412 are arranged on the front sides of the upper rubbing strip 48 and the lower rubbing strip 49.

[0055] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10As shown, the chip collector 411 includes ridges 4111 respectively provided on the upper rubbing strip 48 and the lower rubbing strip 49, and the number of the ridges 4111 is several. The several ridges 4111 are equally divided on the opposite inclined surfaces of the upper rubbing strip 48 and the lower rubbing strip 49. During the relative translation of the upper rubbing strip 48 and the lower rubbing strip 49, the ridges 4111 on their surfaces help to increase the blocking force of the hard burrs between the upper rubbing strip 48 and the lower rubbing strip 49, and improve the force application stability to the burrs;

[0056] Shaft heads 4112 are fixedly connected to the opposite ends of the two groups of ridges 4111. Shaft holes 4113 are respectively provided at the positions corresponding to the shaft heads 4112 on the surfaces of the upper rubbing strip 48 and the lower rubbing strip 49. The two groups of ridges 4111 are rotatably connected in the corresponding shaft holes 4113 through the shaft heads 4112;

[0057] Fan-shaped grooves 4114 are provided on the side walls of the shaft holes 4113. A limiting head 4115 is convexly provided on the surface of the shaft head 4112, and the limiting head 4115 is located in the fan-shaped groove 4114;

[0058] A transverse groove 4116 is provided at the top edge of the lower rubbing strip 49. The ridges 4111 are deflected correspondingly by using the shaft heads 4112. At this time, the ridges 4111 are relatively inclined. The hard burrs broken between the upper rubbing strip 48 and the lower rubbing strip 49 can be pushed up along the inclined ridges 4111 into the transverse groove 4116. A triangular block 4117 is provided at the bottom inside the transverse groove 4116. When the triangular block 4117 swings left and right following the lower rubbing strip 49, the debris is displaced outward along the inclined surface of the triangular block 4117 and is blocked and returned by the plane, so as to gradually shake out the debris from the transverse groove 4116.

[0059] In this embodiment, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 shown, the burr remover 412 includes a support beam 4121 fixedly installed in the housing 1 in the left-right direction, and the support beam 4121 is located in front of the lower rubbing strip 49;

[0060] Ring seats 4122 are movably sleeved at both ends of the support beam 4121, and the two side link rods 413 further extend and are respectively fixedly connected to the two ring seats 4122;

[0061] Winding reels 4123 are rotatably connected to the opposite ends of the two ring seats 4122. The two winding reels 4123 are both in a spiral structure, and the two winding reels 4123 are screwed together along the spiral gap. The two circular seats on both sides are driven by the two sliding rings 45 to perform reciprocating relative and separating displacements. The winding reels 4123 on the circular seats move synchronously. The winding reels 4123 at both ends are mutually pushed against along the screwed gap, so that the two winding reels 4123 rotate when moving horizontally.

[0062] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 As shown, a motor corresponding to the two rollers 3 on the rear side is fixedly installed on the surface of the shell 1, and the rotating shaft of the motor is connected in parallel with the shaft of the corresponding roller 3. The motor drives the two rollers 3 on the front side to rotate relative to each other and delivers the door panel between the two rollers 3 forward.

[0063] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 As shown, the top of the slip ring 45 is fixedly connected with an arch frame for combing the bristles 42. The arch frames on both sides can move left and right with the slip ring 45, and cooperate with the rotating bristles 42 to comb it, knocking off debris on the surface and preventing the bristles 42 from being entangled and affecting the removal of burrs.

[0064] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 As shown, a torsion spring is provided on the surface of the shaft head 4112 and in the shaft hole 4113, and the torsion spring limits the ridge 4111 to the middle position, so that the ridges 4111 on the upper and lower rubbing strips 48 and 49 can abut against each other more stably, avoiding the misalignment of the two and causing the inability to deflect.

[0065] A method for using a deburring and grinding machine for a semi-finished wooden door surface comprises the following steps:

[0066] S1, feeding the semi-finished door panel to be processed from the rear opening 2 of the shell 1, so that the door panel enters between the two rear rollers 3, and is fed out from the front opening 2 of the shell 1;

[0067] S2. When the door panel moves in the housing 1, the rear roller 3 uses the cooperation between the end gear 43 and the transmission gear 44 to drive the auxiliary cylinder 41 to rotate faster than the roller 3. The roller 3 uses the bristles 42 on its surface to comb the soft burrs on the surface of the door panel to the side facing the lower rubbing strip 49. At the same time, the rotating auxiliary cylinder 41 pushes the protrusion 47 and the slip ring 45 to translate in the left and right directions through the wave groove 46. The slip rings 45 on both sides perform reciprocating relative and opposite displacements, and respectively drive the upper rubbing strip 48 and the lower rubbing strip 49 to move synchronously.

[0068] S3, the burrs on the surface of the door panel that moves forward gradually move to the lower rubbing strip 49, and the harder burrs are directly rubbed off by the upper rubbing strip 48 and the lower rubbing strip 49 that move left and right;

[0069] S4. During the process of the upper rubbing strip 48 and the lower rubbing strip 49 translating relative to each other, the ridges 4111 on their surfaces help to increase the blocking force of the hard burrs between the upper rubbing strip 48 and the lower rubbing strip 49. When the two parts of the ridges 4111 come into contact with each other, the ridges 4111 deflect correspondingly by using the shaft heads 4112. At this time, the ridges 4111 are relatively inclined, and the hard burrs broken between the upper rubbing strip 48 and the lower rubbing strip 49 can be pushed up into the transverse channel 4116 along the inclined ridges 4111.

[0070] S5. The softer burrs that cannot be broken on the surface of the door panel are rubbed by the upper rubbing strip 48 and the lower rubbing strip 49, and part of the soft burrs are rubbed into coarser and harder soft hair knots, and move to the winding 4123 along with the door panel. At this time, the circular seats on both sides are driven by the sliding rings 45 on both sides to perform reciprocating relative and opposite displacements, and the windings 4123 on the circular seats move synchronously. The windings 4123 at both ends push against each other along the mating gap, causing the two windings 4123 to rotate when moving horizontally, so as to apply rotational and lateral force shearing to the soft hair knots on the door panel by using the gap between the oppositely rotating windings 4123.

[0071] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A deburring and grinding machine for semi-finished wooden door surfaces, comprising a housing (1), characterized in that: The housing (1) is provided with openings (2) on both the front and rear sides, and the interior of the housing (1) is connected to rollers (3) that rotate in the left and right directions. The number of the rollers (3) is four, and the four rollers (3) are arranged in groups of two on the front and rear sides of the housing (1). The rollers (3) of a single group are symmetrically arranged in an upper and lower direction, and the wooden board is clamped and transported between the two groups of rollers (3) from the back to the front; Two hair removers (4) are provided inside the housing (1), and the two hair removers (4) are symmetrically arranged along the upper and lower surfaces of the wooden board, and the two rollers (3) at the rear side respectively drive the hair removers (4) on the same side; The hair remover (4) comprises a secondary cylinder (41) rotatably connected to the inside of the housing (1) in a left-right direction, and bristles (42) are fixedly provided on the surface of the secondary cylinder (41); The ends of the auxiliary cylinder (41) and the rear roller (3) are fixedly sleeved with corresponding end gears (43), and the inner side wall of the housing (1) is rotatably connected to a transmission gear (44) located between the two end gears (43), and the transmission gear (44) is meshed with the two end gears (43) for transmission; Both ends of the auxiliary cylinder (41) are movably sleeved with a slip ring (45), and the ring surfaces at both ends of the auxiliary cylinder (41) are annularly provided with a closed-loop wave groove (46), the inner ring of the slip ring (45) is convexly provided with a protrusion (47), and the protrusion (47) is located in the wave groove (46), and when the auxiliary cylinder (41) rotates, the wave groove (46) pushes the protrusion (47) and the slip ring (45) to perform horizontal translation; The interior of the housing (1) is provided with an upper rubbing strip (48) and a lower rubbing strip (49) in the left and right directions, and the upper rubbing strip (48) and the lower rubbing strip (49) are both configured as triangular strips, and the upper rubbing strip (48) and the lower rubbing strip (49) are disposed with an inclined surface relative to each other and staggered up and down; Two brackets (410) corresponding to the upper rubbing strip (48) and the lower rubbing strip (49) are fixedly installed inside the housing (1), and the upper rubbing strip (48) and the lower rubbing strip (49) are slidably connected along the two brackets (410), the left side slip ring (45) is fixedly connected to the upper rubbing strip (48) through a connecting rod (413), and the right side slip ring (45) is also fixedly connected to the lower rubbing strip (49) through a connecting rod (413); The upper rubbing strip (48) and the lower rubbing strip (49) are provided with a chip collecting piece (411), and the front sides of the upper rubbing strip (48) and the lower rubbing strip (49) are provided with a hair twisting piece (412).

2. A deburring and grinding machine for the surface of a semi-finished wooden door according to claim 1, characterized in that: The chip collecting member (411) includes ridges (4111) respectively provided on the upper rubbing bar (48) and the lower rubbing bar (49), and the number of the ridges (4111) is several, and the several ridges (4111) are equally distributed on the opposite inclined surfaces of the upper rubbing bar (48) and the lower rubbing bar (49); The ends of the two groups of ribs (4111) facing away from each other are fixedly connected to shaft heads (4112), and shaft holes (4113) are provided at positions corresponding to the shaft heads (4112) on the surfaces of the upper and lower rubbing strips (48) and (49), and the two groups of ribs (4111) are rotatably connected to the corresponding shaft holes (4113) via the shaft heads (4112); A fan groove (4114) is provided on the side wall of the shaft hole (4113), and a limiting head (4115) is protruded from the surface of the shaft head (4112), and the limiting head (4115) is located in the fan groove (4114); A transverse channel (4116) is provided on the top edge of the lower rubbing strip (49), and a triangular block (4117) is provided at the bottom inside the transverse channel (4116).

3. A deburring and grinding machine for the surface of a semi-finished wooden door according to claim 2, characterized in that: The twisting member (412) comprises a support beam (4121) fixedly mounted inside the housing (1) in a left-right direction, and the support beam (4121) is located on the front side of the lower twisting bar (49); Both ends of the support beam (4121) are movably sleeved with ring seats (4122), and the connecting rods (413) on both sides are further extended and fixedly connected to the two ring seats (4122) respectively; The opposite ends of the two ring seats (4122) are both rotatably connected to a twisted roll (4123), and the two twisted rolls (4123) are both spiral structures, and the two twisted rolls (4123) are screwed together along the spiral gap.

4. A deburring and grinding machine for the surface of a semi-finished wooden door according to claim 3, characterized in that: Motors corresponding to the two rear rollers (3) are fixedly mounted on the surface of the housing (1), and the rotating shafts of the motors are parallel-connected to the shafts of the corresponding rollers (3).

5. The deburring and grinding machine for the surface of a semi-finished wooden door according to claim 4, characterized in that: The top of the slip ring (45) is fixedly connected to an arch frame for combing the bristles (42).

6. A deburring and grinding machine for the surface of a semi-finished wooden door according to claim 5, characterized in that: A torsion spring is sleeved on the surface of the shaft head (4112) and in the shaft hole (4113), and the torsion spring limits the ridge (4111) to a neutral position.

7. The method for using the deburring and grinding machine for the surface of a semi-finished wooden door according to claim 6, comprising the following steps: S1, feeding the semi-finished door panel to be processed from the rear opening (2) of the shell (1), so that the door panel enters between the two rear rollers (3), and is fed out from the front opening (2) of the shell (1); S2. During the movement of the door panel in the housing (1), the rear roller (3) drives the auxiliary cylinder (41) to rotate faster than the roller (3) by means of the cooperation between the end gear (43) and the transmission gear (44). The roller (3) combs the soft burrs on the surface of the door panel toward the side facing the lower rubbing strip (49) through the bristles (42) on the surface. At the same time, the rotating auxiliary cylinder (41) pushes the protrusion (47) and the slip ring (45) to move in the left and right directions through the wave groove (46). The slip rings (45) on both sides perform reciprocating relative and opposite displacements, and respectively drive the upper rubbing strip (48) and the lower rubbing strip (49) to move synchronously. S3, the burrs on the surface of the door panel moving forward gradually move to the lower rubbing strip (49), wherein the harder burrs are directly rubbed off by the upper rubbing strip (48) and the lower rubbing strip (49) moving left and right; S4. During the translation of the upper rubbing strip (48) and the lower rubbing strip (49), the ridges (4111) on the surfaces of the two strips help to increase the blocking force between the hard burrs and the upper rubbing strip (48) and the lower rubbing strip (49). When the two ridges (4111) collide with each other, the ridges (4111) are deflected accordingly by the shaft head (4112). At this time, the ridges (4111) are relatively tilted, and the hard burrs that are rubbed off between the upper rubbing strip (48) and the lower rubbing strip (49) can be pushed up into the horizontal channel (4116) along the tilted ridges (4111); S5. The soft burrs on the door panel surface that cannot be rubbed off are rubbed together by the upper rubbing strip (48) and the lower rubbing strip (49), and some of the soft burrs are rubbed into thicker and harder soft hair nodes, which are moved with the door panel to the coil (4123). At this time, the round seats on both sides are driven by the slip rings (45) on both sides to move back and forth relative to each other, and the coils (4123) on the round seats move synchronously. The coils (4123) at both ends push each other along the gap between the rotations, so that the two coils (4123) rotate when moving horizontally, so as to use the gap between the oppositely rotating coils (4123) to rotate and shear the soft hair nodes on the door panel.

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