Portable air compressor for furniture production

Abstract

The invention discloses a portable air compressor for furniture production in the technical field of air compressors, which comprises a driving part, a compression part and an air storage part, the output end of the driving part and the input end of the compression part are respectively provided with a driving wheel and a driven wheel, and a transmission belt is arranged between the driving wheel and the driven wheel; the tightening structure adjusts the tightness of the transmission belt through a pressure adjusting wheel; the driving cavity communicates with the top of the compression part, and a driving piece is elastically and slidably arranged in the driving cavity; the spring rod is rotationally arranged between the driving part and the tightening structure; a buffer part is arranged between the interval synchronization structure and the driving piece, and the driving piece is arranged in the buffer part in a sliding mode; the limiting structure is elastically arranged on the side wall of the compression part, is used for limiting the tightening structure and can switch the limiting direction; the tightness and wrap angle of the transmission belt can be automatically adjusted according to the pressure of the top of the compression part, so that the transmission belt can better transmit, the slip probability is reduced, and the transmission efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of air compressors, in particular to a portable air compressor for furniture production. Background Art

[0002] Air compressors can be divided into three categories according to their working principles: volumetric, dynamic (speed or turbine) and thermal compressors.

[0003] The piston air compressor in the positive displacement type is known for its simple structure, which makes its failure rate relatively low and easy to maintain, thus extending the service life of the equipment. For furniture manufacturers, this means reducing downtime and maintenance costs, improving production efficiency and equipment utilization. In order to protect the motor, the piston air compressor uses a belt transmission between the motor and the compression part, which plays a role of buffering and shock absorption; although the belt can play a buffering role, as the pressure in the air outlet of the air compressor increases, the load of the belt gradually increases, and the risk of belt slippage will increase with the increase of pressure in the air storage part. Belt slippage will reduce transmission efficiency, resulting in a lower upper limit of the internal air pressure of the air compressor, affecting the use of the air compressor in the furniture processing process. Summary of the invention

[0004] The technical problem of the present invention is to provide a portable air compressor for furniture production, which can automatically adjust the tightness and wrap angle of the transmission belt according to the pressure on the top of the compression part, so that the transmission belt can transmit better, reduce the probability of slipping, and improve transmission efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A portable air compressor for furniture production, comprising a driving part, a compression part and an air storage part, wherein a driving wheel and a driven wheel are respectively installed at the output end of the driving part and the input end of the compression part, and a transmission belt is arranged between the driving wheel and the driven wheel; and further comprising:

[0007] Pressure regulating wheel, used to adjust the tightness of the transmission belt;

[0008] The tightening structure is installed on the side wall of the compression part, and the tightness of the transmission belt is adjusted through the pressure regulating wheel;

[0009] A driving chamber is connected to the top of the compression part, and a driving member is elastically and slidably arranged inside, and the moving distance of the driving member is proportional to the pressure in the compression part;

[0010] A spring rod is rotatably disposed between the driving member and the tightening structure;

[0011] The interval synchronization structure is provided with a buffer portion between the drive member and the drive member, and the drive member is slidably arranged in the buffer portion. When the drive member slides to the top of the buffer portion, the top of the spring rod can be driven to move through the interval synchronization structure;

[0012] The limiting structure is elastically arranged on the side wall of the compression part, used for limiting the tightening structure and capable of switching the limiting direction. The limiting structure in the free state limits the pressure regulating wheel from being away from the transmission belt;

[0013] When the driving member rises, the limiting direction of the tightening structure is switched to loosen the pressure of the pressure regulating wheel on the transmission belt; when the driving member moves to the top of the buffer part, the switching of the limiting direction of the limiting structure is released.

[0014] As a further solution of the present invention, the pressure regulating wheels are arranged in pairs and are respectively disposed at the upper and lower ends of the transmission belt, and the tightening structure includes:

[0015] Tightening frames arranged in pairs, the tightening frames are rotatably arranged on the side wall of the compression part, the pressure regulating wheel is rotatably arranged on the end of the tightening frame, and one of the tightening frames is rotatably connected to the spring rod;

[0016] A synchronous rack is fixedly mounted on the end of the tightening frame, and an anti-loosening groove and a switching groove are respectively opened on both sides of one of the synchronous racks, and the anti-loosening groove and the switching groove are arranged in a circular array;

[0017] The synchronous gear is rotatably arranged on the side wall of the compression part and meshes with the synchronous rack.

[0018] As a further solution of the present invention, the limiting structure includes:

[0019] A limit slide bar is vertically elastically slidably arranged on the side wall of the compression part through an elastic member;

[0020] The bidirectional limit pin is rotatably arranged on the side wall of the compression part and slides with the bottom of the limit slide bar, intermittently engaging the anti-loosening groove and the switching groove to realize switching of the limit direction;

[0021] The limiting rod is rotatably arranged on the side wall of the compression part through a bracket, and a trigger ball and a slide rail are respectively arranged at both ends. The limiting slide rod is slidably arranged in the slide rail through a cross bar;

[0022] The trigger member is installed at the outer bottom of the driving member and is used to drive the outer end of the limit rod to descend.

[0023] As a further solution of the present invention, the triggering member includes:

[0024] A base and a movable seat, wherein the base is rotatably arranged on the top of the spring rod, and the movable seat is fixedly arranged on the outer bottom of the driving member;

[0025] A trigger plate is elastically slidably arranged in the movable seat, a limited wedge block is arranged at the end of the trigger plate, and the free state moving track of the trigger plate partially overlaps with the moving track of the trigger ball;

[0026] A trigger wedge block is fixedly arranged on the top of the buffer part and is used to drive the trigger plate to move so that the limit wedge block is engaged with the side wall of the movable seat;

[0027] The unlocking wedge block is elastically slidably arranged on the base, and the trigger plate passes over the trigger ball in the free state to release the limit wedge block from being disconnected from the movable seat.

[0028] As a further solution of the present invention, the interval synchronization structure includes:

[0029] A synchronous slide bar is slidably arranged on the side wall of the compression part, and a return spring is arranged between the synchronous slide bar and the compression part;

[0030] The partition plate is fixedly arranged on the side wall of the synchronous sliding rod, the buffer part is arranged below the partition plate, and the driving member is slidably arranged below the partition plate through a movable seat.

[0031] As a further solution of the present invention, the limit rod is rotatably arranged with the bracket via a rotating shaft, a movable limit piece is fixedly provided on the rotating shaft, a fixed limit piece is fixedly connected to the side wall of the bracket, and the fixed limit piece is used for the rotation angle of the movable limit piece.

[0032] As a further solution of the present invention, a filter is connected to the air inlet end of the compression part, and the filter is used to filter the moisture in the wood chips and the air.

[0033] As a further solution of the present invention, a sliding plate fixed to the driving member is slidably disposed in the driving cavity, and a driving spring is fixedly connected between the sliding plate and the driving cavity.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] In the present invention, the piston inside the compression part reciprocates to compress the gas in the compression part and send it into the gas storage part. When the pressure in the gas storage part is lower than the set pressure, the driving member reciprocates in the buffer part, and gradually loosens the tightness of the transmission belt, reduces the wrap angle α between the transmission belt and the driving wheel and the driven wheel, so as to avoid excessive tension of the transmission belt and excessive wrap angle increasing the load; when the pressure in the gas storage part is lower than the set pressure, the driving member moves to the top of the buffer part and drives the pressure regulating wheel to move toward the transmission belt through the spring rod and the tightening structure, tightens the transmission belt, and increases the wrap angle α between the transmission belt and the driving wheel and the driven wheel, so as to improve the transmission stability and load capacity; it realizes the automatic adjustment of the squeezing of the transmission belt by the pressure regulating wheel according to the pressure of the compression cavity of the compression part, adjusts the tightness of the transmission belt and increases the wrap angle α between the transmission belt and the driving wheel and the driven wheel, so as to improve the transmission efficiency and stability; it can also automatically loosen the tightness of the transmission belt and reduce the wrap angle α between the transmission belt and the driving wheel and the driven wheel after using part of the pressure in the middle. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the present invention;

[0039] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0040] Figure 4 For the present invention Figure 2 The enlarged structural diagram at B in the middle;

[0041] Figure 5 For the present invention Figure 2 The enlarged structural diagram at C in the middle;

[0042] Figure 6 It is a schematic diagram of the motion trajectory of the tightening frame and its connection relationship of the present invention;

[0043] Figure 7 A schematic diagram of the motion trajectory of the trigger member and its connection relationship of the present invention;

[0044] Figure 8 It is a schematic diagram of the tightening frame and its connection relationship structure of the present invention;

[0045] Fig. 9 For the present invention Figure 8 The enlarged structural diagram at C in the middle;

[0046] Fig.10 It is a schematic diagram of the structure of the trigger member and its connection relationship of the present invention;

[0047] Fig.11 This is a schematic diagram of the explosion structure of the tightening structure of the present invention;

[0048] Fig.12 It is a schematic diagram of the structure of the limit sliding rod and its connection relationship of the present invention;

[0049] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0050] 10. Driving unit; 11. Compression unit; 12. Gas storage unit; 13. Driving wheel; 14. Driven wheel; 15. Transmission belt; 16. Filter; 2. Tightening structure; 21. Tightening frame; 22. Synchronous rack; 23. Anti-loosening groove; 24. Switching groove; 25. Synchronous gear; 26. Pressure regulating wheel; 31. Driving chamber; 32. Driving member; 33. Spring rod; 34. Slide; 35. Driving spring; 4. Limiting structure; 41. Limiting slide rod; 4 2. Elastic member; 43. Bidirectional limit pin; 44. Limit rod; 45. Trigger ball; 46. Slide rail; 5. Trigger member; 51. Base; 52. Movable seat; 53. Trigger plate; 54. Limit wedge block; 55. Trigger wedge block; 56. Unlocking wedge block; 7. Interval synchronization structure; 71. Synchronous slide rod; 72. Reset spring; 73. Partition plate; 74. Buffer; 81. Bracket; 82. Movable limit member; 83. Fixed limit member. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] See also Figure 1-12 The present invention provides a technical solution: comprising a driving part 10, a compression part 11 and an air storage part 12, wherein a driving wheel 13 and a driven wheel 14 are respectively installed at the output end of the driving part 10 and the input end of the compression part 11, and a transmission belt 15 is arranged between the driving wheel 13 and the driven wheel 14;

[0053] The driving part 10 is a motor, and the motor output shaft drives the driving wheel 13 to rotate. The driving wheel 13 drives the driven wheel 14 to rotate synchronously through the transmission belt 15, and the driven wheel 14 drives the piston in the compression part 11 to move up and down reciprocatingly; the suction process: when the piston moves downward, the volume in the compression part 11 increases, forming a vacuum state, and the outside air pushes the intake valve of the compression part 11 to enter the compression part 11; the compression process: when the piston moves upward, the intake valve is closed to prevent the gas from flowing back, the volume in the compression part 11 is reduced, the gas in the volume is compressed, and the pressure gradually increases; the exhaust process: when the gas in the compression part 11 is higher than the pressure in the gas storage part 12, the exhaust valve of the compression part 11 is opened, and the gas in the compression part 11 enters the gas storage part 12; the cycle is repeated, and the pressure in the gas storage part 12 gradually increases;

[0054] Also includes:

[0055] The pressure regulating wheel 26 is used to adjust the tightness of the transmission belt 15;

[0056] The tightening structure 2 is installed on the side wall of the compression part 11, and the tightness of the transmission belt 15 is adjusted by the pressure regulating wheel 26;

[0057] The driving chamber 31 is connected to the top of the compression part 11, and a driving member 32 is elastically slidably arranged inside. The moving distance of the driving member 32 is proportional to the pressure in the compression part 11;

[0058] A spring rod 33 is rotatably disposed between the driving member 32 and the tightening structure 2;

[0059] A buffer portion 74 is provided between the interval synchronization structure 7 and the driving member 32, and the driving member 32 is slidably provided in the buffer portion 74. When the driving member 32 slides to the top of the buffer portion 74, the top of the spring rod 33 can be driven to move through the interval synchronization structure 7;

[0060] The limiting structure 4 is elastically arranged on the side wall of the compression part 11, and is used for limiting the tightening structure 2 and can switch the limiting direction. The limiting structure 4 in the free state limits the pressure regulating wheel 26 to be away from the transmission belt 15;

[0061] When the driving member 32 rises, the limiting direction of the tightening structure 2 is switched to loosen the pressure of the pressure regulating wheel 26 on the transmission belt 15; when the driving member 32 moves to the top of the buffer portion 74, the switching of the limiting direction of the limiting structure 4 is released;

[0062] Specifically, as the gas pressure in the compression part 11 increases, the pressure in the driving chamber 31 increases accordingly. When the gas pressure overcomes the elastic force applied to the driving member 32, the driving member 32 rises as the gas pressure increases. Conversely, when the gas pressure decreases, the driving member 32 falls under the action of the elastic force (the elastic force comes from the driving spring 35). Moreover, the rising distance of the driving member 32 is proportional to the gas pressure in the compression part 11.

[0063] The driving member 32 can reciprocate up and down, and the moving distance increases as the pressure in the compression part 11 (gas storage part 12) increases;

[0064] According to the pressure in the gas storage part 12, there are two situations;

[0065] The first case: when the pressure in the air storage section 12 is lower than the set pressure (the upper limit of the set pressure is related to the friction coefficient and elastic coefficient of the transmission belt 15, and the set pressure is the pressure for adjusting the tightness of the transmission belt 15, not the storage pressure of the air storage section 12), the upper limit of the up and down movement of the driving member 32 does not contact the top of the buffer section 74, and when the driving member 32 rises, the limiting structure 4 maintains the limit on the tightening structure 2, and when the driving member 32 descends, the limiting structure 4 switches the limiting direction and quickly resets, and a part of the reverse thrust applied by the transmission belt 15 to the pressure regulating wheel 26 is released, so as to loosen the transmission belt 15, so that the transmission belt 15 maintains a suitable tightness and wrap angle, avoids the transmission belt 15 being too tight and the wrap angle being too large, reduces the service life of the transmission belt 15, and increases the running load; it is suitable for automatically loosening the tightness and wrap angle of the transmission belt 15 by using part of the air pressure in the air storage section 12 after stopping compression midway;

[0066] The second situation: when the pressure in the air storage part 12 is not lower than the set pressure, the bottom of the driving member 32 contacts the top of the buffer part 74, and the driving member 32 drives the top of the spring rod 33 to rise through the interval synchronization structure 7. The bottom of the spring rod 33 drives the pressure regulating wheel 26 to move and squeeze the transmission belt 15 through the tightening structure 2, so that the contact area between the transmission belt 15 and the driving wheel 13 and the driven wheel 14 is increased, and the wrap angle between the transmission belt 15 and the driving wheel 13 and the driven wheel 14 is increased, so as to improve the transmission efficiency. When the driving member 32 descends, the limiting structure 4 limits the tightening structure 2, so as to maintain the constant position of the pressure regulating wheel 26, so that the transmission belt 15 is maintained after being tightened;

[0067] For the explanation of the change of the wrap angle, take the driven wheel 14 as an example, see Figure 6 , the pressure regulating wheel 26 squeezes the transmission belt 15, and the wrap angle of the driven wheel 14 changes from the wrap angle α1 to the wrap angle α2, and vice versa, the wrap angle changes from α2 to α1, and the driving wheel 13 is the same;

[0068] In summary, the piston inside the compression part 11 moves back and forth, compresses the gas in the compression part 11 and sends it into the gas storage part 12. When the pressure in the gas storage part 12 is lower than the set pressure, the driving member 32 moves back and forth in the buffer part 74, and gradually loosens the tightness of the transmission belt 15, reduces the wrap angle α between the transmission belt 15 and the driving wheel 13 and the driven wheel 14, and avoids excessive tension of the transmission belt 15 and excessive wrap angle to increase the load; when the pressure in the gas storage part 12 is lower than the set pressure, the driving member 32 moves to the top of the buffer part 74 and drives the pressure regulating wheel 26 to the transmission belt 15 through the spring rod 33 and the tightening structure 2. Move, tighten the transmission belt 15, and increase the wrap angle α between the transmission belt 15 and the driving wheel 13, as well as the driven wheel 14, to improve the transmission stability and load capacity; realize automatic adjustment of the extrusion of the transmission belt 15 by the pressure-adjusting wheel 26 according to the pressure of the compression cavity of the compression part 11, adjust the tightness of the transmission belt 15 and increase the wrap angle α between the transmission belt 15 and the driving wheel 13, as well as the driven wheel 14, to improve the transmission efficiency and stability; it can also automatically loosen the tightness of the belt 15 and reduce the wrap angle α between the transmission belt 15 and the driving wheel 13, as well as the driven wheel 14 after using part of the pressure in the middle.

[0069] As a further solution of the present invention, the pressure regulating wheels 26 are arranged in pairs, respectively provided at the upper and lower ends of the transmission belt 15. The symmetrically arranged pressure regulating wheels 26 can be tightened from both sides of the transmission belt 15 at the same time, which can avoid one-way slippage between the transmission belt 15 and the driving wheel 13 and the driven wheel 14 after one side of the transmission belt 15 is tightened, resulting in uneven force on the transmission belt 15 and reducing the service life of the transmission belt 15.

[0070] The tightening structure 2 comprises:

[0071] The tightening frames 21 are arranged in pairs, the tightening frames 21 are rotatably disposed on the side wall of the compression part 11, and the pressure regulating wheel 26 is rotatably disposed on the end of the tightening frames 21, and one of the tightening frames 21 is rotatably connected to the spring rod 33;

[0072] The synchronous rack 22 is fixedly mounted on the end of the tightening frame 21, and an anti-loosening groove 23 and a switching groove 24 are respectively opened on both sides of one of the synchronous racks 22, and the anti-loosening groove 23 and the switching groove 24 are arranged in a circumferential array;

[0073] The synchronous gear 25 is rotatably disposed on the side wall of the compression part 11 and meshes with the synchronous rack 22; when one of the synchronous racks 22 rotates, the synchronous gear 25 can rotate in the opposite direction synchronously with the other synchronous rack 22;

[0074] Specifically, the driving member 32 rises and drives one of the tightening frames 21 to rotate through the spring rod 33. The tightening frame 21 drives the other tightening frame 21 to rotate synchronously in the opposite direction through the synchronous gear 25 and the synchronous rack 22, so that the pressure regulating wheel 26 moves synchronously, thereby realizing the tightening or loosening of the transmission belt 15 from both sides at the same time, thereby improving the stability of the transmission.

[0075] As a further solution of the present invention, the limiting structure 4 includes:

[0076] The limiting slide bar 41 is vertically elastically slidably disposed on the side wall of the compression portion 11 through an elastic member 42;

[0077] The bidirectional limiting pin 43 is rotatably disposed on the side wall of the compression part 11 and slides with the bottom of the limiting slide rod 41, intermittently engaging the anti-loosening groove 23 and the switching groove 24 to achieve switching of the limiting direction;

[0078] The limiting rod 44 is rotatably arranged on the side wall of the compression part 11 through the bracket 81, and a trigger ball 45 and a slide rail 46 are respectively arranged at both ends. The limiting slide rod 41 is slidably arranged in the slide rail 46 through the cross bar;

[0079] The trigger member 5 is installed at the outer bottom of the driving member 32 and is used to drive the outer end of the limiting rod 44 to descend;

[0080] Specifically, the trigger member 5 moves with the driving member 32, the trigger member 5 drives the trigger ball 45 to rise, the limit rod 44 rotates clockwise, the slide rail 46 descends, the limit slide rod 41 descends, the two-way limit pin 43 is pressed down and the elastic member 42 is stretched, so that the two-way limit pin 43 switches the limiting direction of the tightening frame 21, the tightening frame 21 can rotate clockwise, and the elastic member 42 resiliently resets the two-way limit pin 43, and the tightening frame 21 is again limited in the clockwise rotation, thereby releasing part of the pressure of the transmission belt 15 and loosening the transmission belt 15;

[0081] When the trigger member 5 contacts the top of the buffer portion 74, the trigger member 5 contracts so that the end motion trajectory is out of overlap with the initial state position of the trigger ball 45 (see Figure 7 , c is the movement trajectory of the trigger ball 45, that is, the end of the trigger member 5 moves from the right side of b to a), when the trigger member 5 rises again, the trigger member 5 will not be driven to move, so that the tightness of the transmission belt 15 will not be loosened. After the trigger member 5 passes over the trigger ball 45, the trigger member 5 returns to its initial state; the trigger member 5 can automatically adjust the tightness of the transmission belt 15 and the wrap angle between the driving wheel 13 and the driven wheel 14, thereby improving the transmission efficiency and the service life of the transmission belt 15.

[0082] As a further solution of the present invention, the triggering member 5 includes:

[0083] A base 51 and a movable base 52, wherein the base 51 is rotatably disposed on the top of the spring rod 33, and the movable base 52 is fixedly disposed on the outer bottom of the driving member 32;

[0084] The trigger plate 53 is elastically slidably disposed in the movable seat 52, and a limited wedge block 54 is disposed at the end of the trigger plate 53. The free state moving track of the trigger plate 53 partially overlaps with the moving track of the trigger ball 45;

[0085] The trigger wedge block 55 is fixedly mounted on the top of the buffer portion 74 and is used to drive the trigger plate 53 to move so that the limit wedge block 54 is engaged with the side wall of the movable seat 52;

[0086] The unlocking wedge block 56 is elastically slidably disposed on the base 51, and the trigger plate 53 passes over the trigger ball 45 in the free state, so that the limit wedge block 54 is released from the engagement with the movable seat 52;

[0087] For details, see Figure 7-Figure 9 , the movable seat 52 moves reciprocatingly up and down with the driving member 32. When the movable seat 52 moves upward, the end of the trigger plate 53 slidably arranged in the movable seat 52 drives the trigger ball 45 to move upward, so that the limit rod 44 rotates clockwise, completing the switching of the limit direction of the two-way limit pin 43; when the movable seat 52 moves downward, the trigger plate 53 presses the trigger ball 45 downward, so that the limit rod 44 rotates counterclockwise, so that the free state of the two-way limit pin 43 strengthens the limit rod 44 rotating counterclockwise on the tightening frame 21 through its own deformation, so that the trigger plate 53 passes over the trigger ball 45 and moves to the bottom of the trigger ball 45; the above is the case where the upper limit of the up and down movement of the driving member 32 does not contact the top of the buffer portion 74;

[0088] When the driving member 32 drives the movable seat 52 to contact the top of the buffer portion 74, the trigger wedge block 55 drives the trigger plate 53 to move by squeezing, so that the limiting wedge block 54 is clamped on the side wall of the movable seat 52, and the movement trajectory of the end of the trigger plate 53 becomes a. When the trigger plate 53 drops to the bottom, the limiting wedge block 54 squeezes the unlocking wedge block 56, so that the unlocking wedge block 56 is deformed, and the limiting wedge block 54 passes over the unlocking wedge block 56. When the movable seat 52 rises again, the end of the trigger plate 53 can directly pass over the trigger ball 45, and the two-way limiting pin 43 remains stationary. After the trigger plate 53 passes over the trigger ball 45, the spring between the unlocking wedge block 56 and the base 51 is compressed to the limit, and the unlocking wedge block 56 no longer rises, and the clamping connection between the limiting wedge block 54 and the movable seat 52 is released, and the trigger plate 53 is reset. The cycle is repeated to achieve the selective driving of the rotation of the two-way limiting pin 43, and the tightness and wrap angle of the transmission belt 15 are reasonably adjusted.

[0089] As a further solution of the present invention, the interval synchronization structure 7 includes:

[0090] A synchronous slide bar 71 is slidably disposed on the side wall of the compression part 11, and a return spring 72 is disposed between the synchronous slide bar 71 and the compression part 11;

[0091] The partition plate 73 is fixed to the side wall of the synchronous slide bar 71, and the buffer portion 74 is below the partition plate 73. The driving member 32 is slidably disposed below the partition plate 73 through the movable seat 52;

[0092] Specifically, the movable seat 52 moves in the buffer portion 74 along with the driving member 32. When the pressure in the air storage portion 12 is lower than the set pressure, the movable seat 52 moves in the buffer portion 74 to appropriately loosen the tightness and wrap angle of the transmission belt 15. When the pressure in the air storage portion 12 is greater than or equal to the set pressure, the movable seat 52 contacts and drives the synchronous slide bar 71 to rise through the partition plate 73. The synchronous slide bar 71 drives the base 51 connected to the bottom to rise. The base 51 drives the spring rod 33 to drive the pressure regulating wheel 26 through the tightening frame 21 to increase the tightness and wrap angle of the transmission belt 15.

[0093] As a further solution of the present invention, the limit rod 44 is rotatably arranged with the bracket 81 through the rotating shaft, the rotating shaft is fixed with a movable limit member 82, and the side wall of the bracket 81 is fixedly connected with a fixed limit member 83, and the fixed limit member 83 is used for the rotation angle of the movable limit member 82;

[0094] For details, see Fig.12 The movable limit member 82 can rotate with the limit rod 44. When the limit rod 44 rotates counterclockwise, the movable limit member 82 contacts the fixed limit member 83, and the limit rod 44 can be limited by the movable limit member 82, thereby limiting the excessive counterclockwise rotation of the limit rod 44, causing the bidirectional limit pin 43 to disengage from the anti-loosening groove 23, affecting the counterclockwise limit of the tightening frame 21.

[0095] As a further solution of the present invention, a filter 16 is connected to the air inlet end of the compression part 11, and the filter 16 is used to filter the moisture in the wood chips and the air;

[0096] As a further solution of the present invention, a slide plate 34 fixed to the driving member 32 is slidably disposed in the driving cavity 31, and a driving spring 35 is fixedly connected between the slide plate 34 and the driving cavity 31;

[0097] Specifically, the slide 34 can separate the drive chamber 31 into a lower chamber connected to the compression part 11 and an upper chamber connected to the outside. The pressure in the lower chamber changes with the pressure in the compression part 11. The pressure difference is used to drive the slide 34 to rise and fall, and the slide 34 drives the pre-fixed drive member 32 to rise and fall.

Claims

1. A portable air compressor for furniture production, comprising a driving part (10), a compression part (11) and an air storage part (12), wherein a driving wheel (13) and a driven wheel (14) are respectively installed at the output end of the driving part (10) and the input end of the compression part (11), and a transmission belt (15) is arranged between the driving wheel (13) and the driven wheel (14), characterized in that: Also includes: A pressure regulating wheel (26) for adjusting the tightness of the transmission belt (15); The tightening structure (2) is installed on the side wall of the compression part (11) and adjusts the tightness of the transmission belt (15) through the pressure regulating wheel (26); A driving chamber (31) is communicated with the top of the compression part (11), and a driving member (32) is elastically and slidably arranged inside the driving chamber (31), wherein the moving distance of the driving member (32) is proportional to the pressure inside the compression part (11); A spring rod (33) is rotatably disposed between the driving member (32) and the tightening structure (2); A buffer portion (74) is provided between the interval synchronization structure (7) and the driving member (32), and the driving member (32) is slidably arranged in the buffer portion (74). When the driving member (32) slides to the top of the buffer portion (74), the top of the spring rod (33) can be driven to move through the interval synchronization structure (7); A limiting structure (4) is elastically arranged on a side wall of the compression portion (11), and is used to limit the position of the tightening structure (2) and is capable of switching the limiting direction. The limiting structure (4) in a free state limits the pressure regulating wheel (26) from being away from the transmission belt (15); When the driving member (32) rises, the limiting direction of the tightening structure (2) is switched, thereby loosening the pressure of the pressure regulating wheel (26) on the transmission belt (15); when the driving member (32) moves to the top of the buffer portion (74), the switching of the limiting direction of the limiting structure (4) is released.

2. A portable air compressor for furniture production according to claim 1, characterized in that: The pressure regulating wheels (26) are arranged in pairs and are respectively disposed at the upper and lower ends of the transmission belt (15). The tightening structure (2) comprises: Tightening frames (21) are arranged in pairs, the tightening frames (21) are rotatably arranged on the side wall of the compression part (11), the pressure regulating wheel (26) is rotatably arranged on the end of the tightening frame (21), and one of the tightening frames (21) is rotatably connected to the spring rod (33); A synchronous rack (22) is fixedly mounted on the end of the tightening frame (21), and an anti-loosening groove (23) and a switching groove (24) are respectively provided on both sides of one of the synchronous racks (22), and the anti-loosening groove (23) and the switching groove (24) are arranged in a circular array; The synchronous gear (25) is rotatably disposed on the side wall of the compression portion (11) and meshes with the synchronous rack (22).

3. A portable air compressor for furniture production according to claim 1 or 2, characterized in that: The limiting structure (4) comprises: A limiting slide bar (41) is vertically elastically slidably arranged on the side wall of the compression portion (11) through an elastic member (42); A bidirectional limiting pin (43) is rotatably disposed on the side wall of the compression portion (11) and slides with the bottom of the limiting slide bar (41) to intermittently engage the anti-loosening groove (23) and the switching groove (24) to achieve switching of the limiting direction; A limit rod (44) is rotatably arranged on the side wall of the compression part (11) through a bracket (81), and a trigger ball (45) and a slide rail (46) are respectively arranged at both ends. The limit slide rod (41) is slidably arranged in the slide rail (46) through a cross bar; The trigger member (5) is installed at the outer bottom of the driving member (32) and is used to drive the outer end of the limiting rod (44) to descend.

4. A portable air compressor for furniture production according to claim 3, characterized in that: The triggering member (5) comprises: A base (51) and a movable seat (52), wherein the base (51) is rotatably arranged on the top of the spring rod (33), and the movable seat (52) is fixedly arranged on the outer bottom of the driving member (32); A trigger plate (53) is elastically slidably arranged in the movable seat (52), a limited wedge block (54) is arranged at the end of the trigger plate (53), and the free state moving track of the trigger plate (53) partially overlaps with the moving track of the trigger ball (45); A trigger wedge block (55) is fixedly arranged on the top of the buffer portion (74) and is used to drive the trigger plate (53) to move so that the limiting wedge block (54) is engaged with the side wall of the movable seat (52); The unlocking wedge block (56) is elastically slidably arranged on the base (51), and the trigger plate (53) passes over the trigger ball (45) in the free state, thereby releasing the limit wedge block (54) from being engaged with the movable seat (52).

5. The portable air compressor for furniture production according to claim 1, characterized in that: The interval synchronization structure (7) comprises: A synchronous slide bar (71) is slidably disposed on a side wall of the compression portion (11), and a return spring (72) is disposed between the synchronous slide bar and the compression portion (11); The partition plate (73) is fixedly arranged on the side wall of the synchronous slide bar (71), a buffer portion (74) is arranged below the partition plate (73), and the driving member (32) is slidably arranged below the partition plate (73) through a movable seat (52).

6. The portable air compressor for furniture production according to claim 3, characterized in that: The limiting rod (44) is rotatably arranged with the bracket (81) via a rotating shaft, a movable limiting member (82) is fixedly arranged on the rotating shaft, a fixed limiting member (83) is fixedly connected to the side wall of the bracket (81), and the fixed limiting member (83) is used for the rotation angle of the movable limiting member (82).

7. The portable air compressor for furniture production according to claim 1, characterized in that: The air inlet end of the compression part (11) is connected to a filter (16), and the filter (16) is used to filter the moisture in the wood chips and the air.

8. The portable air compressor for furniture production according to claim 1, characterized in that: A sliding plate (34) fixedly mounted on the driving member (32) is slidably disposed in the driving cavity (31), and a driving spring (35) is fixedly connected between the sliding plate (34) and the driving cavity (31).

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