Impeller polishing equipment

Abstract

The invention relates to the technical field of polishing equipment, and particularly discloses impeller polishing equipment which comprises a base and a vertically-arranged barrel, grinding materials are arranged in the barrel, two sets of extrusion modules and a feeding base are arranged in the barrel, and the two sets of extrusion modules are arranged in a mirror image mode and arranged at the upper end and the lower end of the barrel respectively; each extrusion module comprises a telescopic part arranged on the barrel, a pressing plate which is arranged on a telescopic part of the telescopic part and slides in the axial direction of the barrel, and a baffle fixedly connected to the inner wall of the barrel. The polishing device has the beneficial effects that materials can penetrate through the lower baffle to be in contact with a workpiece, then penetrate through the through holes in the upper baffle to enter the upper barrel, and then extrude grinding materials in the upper barrel downwards, so that the process is circulated, and the workpiece is polished. The grinding material can continuously circulate up and down in the barrel to polish a workpiece, the grinding material does not need to be recycled, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of polishing equipment, and in particular to an impeller polishing equipment. Background Art

[0002] The impeller is a key component of a centrifugal pump. The impeller of a centrifugal pump transfers the energy of the prime mover to the liquid in the pump through the action of centrifugal force, which increases the speed and pressure of the liquid, causing the liquid in the pump to be discharged and the liquid in the inlet pipe to be sucked in. The materials used for the impeller are mainly gray iron 250, stainless steel and ductile iron 450. 304 stainless steel or 316 stainless steel are also commonly used in life. The impeller has a complex structure. It is composed of several curved blades. The blades are non-developable twisted straight-grained surfaces, so there are certain difficulties in traditional mechanical precision machining. Therefore, the use of abrasive flow precision machining technology can achieve better polishing.

[0003] The processing principle of abrasive flow is that through an extrusion method, the abrasive has fluidity, and the particles in it continuously grind the surface of the workpiece to complete the polishing and deburring process. The abrasive is formed by mixing a semi-solid carrier with viscoelasticity, softness and cutting properties and a certain amount of abrasive. Different carrier viscosities, abrasive types, and abrasive grain sizes can produce different effects. Abrasives have various specifications depending on the shape, material, and processing purpose of the workpiece. The specifications are blended based on the combination of the carrier's viscoelasticity, sand grains, materials, and grain sizes. Generally, silicon carbide is added to cast iron, aluminum, and iron as a standard abrasive. Diamond abrasives are used for superhard materials or ceramics. High-viscosity abrasives can be used to evenly grind the wall surface and large channels of parts; low-viscosity abrasives are used to grind the corners and small channels of parts. The fluidity of the abrasive and the cutting ability of the sand grains make the abrasive flow a mobile deburring tool.

[0004] The Chinese patent with the authorization announcement number CN220312982U discloses a device for precision machining of impellers by abrasive flow. The device consists of a lifting and rotating device, a fixture, a connecting part, a stirring device and a workbench auxiliary part. When working, the motor drives the stirring mechanism to rotate to avoid the deposition of abrasives. In addition, the transmission shaft is driven up and down by the cylinder, and the pulley is driven to rotate by the motor, thereby driving the transmission shaft to rotate, realizing the up and down rotation of the impeller, and efficiently machining the impeller surface, especially the blind area on the back of the blade. The patent has a simple structure and is easy to install. It is suitable for precision machining of impellers by abrasive flow, which can effectively improve machining efficiency and reduce production costs.

[0005] When polishing a workpiece, the existing abrasive flow machining equipment generally squeezes the abrasive upwards, and the abrasive is ejected upwards. Finally, the abrasive is collected and added to the equipment again for squeezing, so as to be recycled. However, this method requires repeated recycling of the abrasive, which not only increases the workload of workers, but also reduces work efficiency. Summary of the invention

[0006] The present invention provides an impeller polishing device, which aims to solve the technical problem that when abrasive flow processing equipment in the related art polishes a workpiece, the abrasive is generally squeezed upward, the abrasive is ejected upward, and finally the abrasive is collected again and added to the equipment again for squeezing, so as to be recycled. However, this method requires repeated recycling of the abrasive, which not only increases the workload of the workers, but also reduces the work efficiency.

[0007] The impeller polishing device of the present invention comprises: a base and a vertically arranged cylinder, wherein the cylinder has abrasives, and the cylinder is provided with two groups of extrusion modules and a material loading seat, wherein the two groups of extrusion modules are arranged in a mirror image and are respectively arranged at the upper and lower ends of the cylinder; each group of extrusion modules comprises a telescopic component arranged on the cylinder, a pressure plate arranged on the telescopic part of the telescopic component and sliding along the axial direction of the cylinder, a baffle fixed to the inner wall of the cylinder, square material holes distributed on the baffle and passing through the upper and lower parts, and an adjusting unit arranged in each material hole; the adjusting unit comprises two adjusting plates respectively arranged on the left and right sides of the material hole, one end of the adjusting plate is rotatably installed on the material hole around an axis extending forward and backward, and a Adjustment slot; the adjustment plate has two moving positions. In the first position, the two adjustment plates are horizontal and the ends abut against each other to close the material hole. The two adjustment slots form a through hole to reduce the size of the abrasive that can pass through; in the second position, the two adjustment plates are inclined to open the material hole. An open accommodating cavity is formed between the adjustment plates and the side walls on the left and right sides of the material hole. The accommodating cavity is for the abrasive to enter, so as to push the adjustment plate to rotate, and the pressure plate pushes the abrasive to reciprocate through the material hole. The adjustment plates on the two sets of baffles are in opposite positions; the side wall of the cylinder has an opening, and the loading seat rotates and cooperates with the opening to enable the loading seat to enter and exit the cylinder. When the loading seat is located in the cylinder, it is coaxially arranged with the cylinder.

[0008] Beneficial effects: The lower driving cylinder drives the lower pressure plate to push the abrasive upward, and the abrasive will pass through the material hole on the lower baffle plate and contact the workpiece. When the abrasive passes through the material hole, the abrasive will push the two adjustment plates upward, causing the two adjustment plates to rotate upward and open. After the abrasive passes through the workpiece, it continues to move upward and contact the upper baffle plate. A part of the abrasive will enter the accommodating cavity on both sides of the material hole on the upper baffle plate, forcing the adjustment plates on both sides to rotate inward until the adjustment plates on both sides rotate to a horizontal state. At this time, the abrasive entering the material hole can only pass through the through holes formed by the two adjustment grooves. The material can quickly pass through the lower baffle plate, and when it reaches the upper baffle plate, it needs to pass through the through holes on the upper baffle plate and then enter the upper cylinder, so the pressure pushing the abrasive upward will become greater, allowing the abrasive to spray out from the through hole, increasing the friction between the abrasive and the workpiece, and ensuring the polishing effect of the abrasive on the workpiece. After the abrasive in the lower cylinder is squeezed out, most of the abrasive will enter the upper cylinder, and then the abrasive in the upper cylinder will be squeezed downward, and the workpiece will be polished in this cycle. The abrasive can circulate up and down in the cylinder continuously to polish the workpiece.

[0009] Preferably, the cylinder includes a lower cylinder, an upper cylinder and a connecting shell, the lower cylinder is vertically fixedly installed on the base, and the lower cylinder is an open structure at the upper end, the upper cylinder and the lower cylinder are spaced apart and coaxially arranged, the upper cylinder is an open structure at the lower end, the connecting shell is an arc structure, and the upper and lower sides of the connecting shell are respectively fixedly connected to the lower cylinder and the upper cylinder.

[0010] Preferably, steps are provided on the side walls opposite to each other in the left and right directions of the material hole, and the adjustment plate is located on the side to which the horizontal surface of the step faces.

[0011] Preferably, the vertical cross-section of the adjustment plate is a teardrop-shaped structure, the adjustment plate has a head and a tail, the head is a sharp end, the tail is a rounded end, and the front and rear sides of the tail of the adjustment plate are rotatably engaged with the front and rear side walls of the material hole through a rotating shaft.

[0012] Preferably, the loading seat is a circular ring structure that penetrates from top to bottom, and the upper and lower ends of the loading seat are respectively slidably matched with the upper cylinder and the lower cylinder. A supporting frame is installed on the inner side of the loading seat near the bottom, and a material blocking frame is installed near the lower position of the upper cylinder.

[0013] The effect is that the workpiece can be loaded and after the workpiece is sent into the cylinder, the workpiece can be maintained in the middle position to ensure that the abrasive passes through the workpiece.

[0014] Preferably, the supporting frame is rotatably matched with the material loading seat, the material blocking frame is rotatably matched with the upper cylinder, and a plurality of driving blades are provided on the supporting frame and the material blocking frame along their circumference, and a limiting column is fixedly connected to the side wall of the material loading seat.

[0015] The effect is that the contact position between the rod body on the material blocking frame and the bearing frame and the workpiece can be changed to ensure that the abrasive material is in full contact with the workpiece.

[0016] Preferably, the loading seat is provided with an annular groove which passes through up and down, a partition plate is provided in the annular groove, the partition plate has a sliding hole which passes through up and down, a connecting column is connected in the sliding hole by a spring for sliding up and down, an upper sealing ring is fixedly installed on the upper end of the connecting column, a lower sealing ring is fixedly installed on the lower end of the connecting column, an annular upper slot is opened on the upper sealing ring, an annular lower plug block is provided at the bottom of the lower sealing ring, an annular mounting groove is opened at the bottom of the upper cylinder body, an annular upper plug block is arranged in the mounting groove, and the upper plug block corresponds to the upper slot up and down, an annular accommodating groove is provided on the lower cylinder body, a lifting ring is slidably matched in the accommodating groove up and down, an annular lower slot is opened on the lifting ring, and the lower plug block corresponds to the lower slot up and down.

[0017] The effect is that the sealing effect between the lower cylinder, the upper cylinder and the material loading seat can be enhanced to prevent the abrasive from leaking out.

[0018] Preferably, the upper insert block, the upper slot, the lower insert block and the lower slot are all in the shape of an isosceles trapezoidal structure.

[0019] The effect is that the two side walls of the upper slot and the lower slot that are opposite to each other can be pushed toward both sides better, thereby enhancing the sealing effect.

[0020] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: the lower driving cylinder drives the lower pressure plate to push the abrasive upward, and the abrasive passes through the material hole on the lower baffle plate and contacts the workpiece. When the abrasive passes through the material hole, it pushes the two adjustment plates upward, causing the two adjustment plates to rotate upward and be in an open state. After the abrasive passes through the workpiece, it continues to move upward and contacts the upper baffle plate. A part of the abrasive will enter the accommodating cavity on both sides of the material hole on the upper baffle plate, forcing the adjustment plates on both sides to rotate inward until the adjustment plates on both sides rotate to a horizontal state. At this time, the abrasive entering the material hole can only pass through the through holes formed by the two adjustment grooves. The material can quickly pass through the lower baffle plate, and when it reaches the upper baffle plate, it needs to pass through the through holes on the upper baffle plate and then enter the upper cylinder body, so the pressure pushing the abrasive upward will become greater, so that the abrasive can be ejected from the through hole, thereby increasing the friction between the abrasive and the workpiece, and ensuring the polishing effect of the abrasive on the workpiece. After the abrasive in the lower cylinder is squeezed out, most of the abrasive will enter the upper cylinder, and then the abrasive in the upper cylinder will be squeezed downward, and the workpiece will be polished in this cycle. The abrasive can circulate up and down in the cylinder continuously to polish the workpiece, and there is no need to recycle the abrasive, which improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is an axonometric cross-sectional view of the present invention.

[0023] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.

[0024] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle.

[0025] Figure 5 This is a schematic diagram of the loading seat of the present invention in an open state.

[0026] Figure 6 It is an exploded schematic diagram of the loading seat and the upper sealing ring of the present invention.

[0027] Figure 7 It is a cross-sectional view of the loading seat of the present invention.

[0028] Figure 8 It is a schematic diagram of the exploded view of the lower baffle plate and the adjustment plate of the present invention.

[0029] Fig. 9 It is an exploded schematic diagram of the lower cylinder and the lifting ring of the present invention.

[0030] Reference numerals: 10. Base; 11. Lower cylinder; 12. Upper cylinder; 13. Connecting shell; 20. Loading seat; 21. Driving motor; 22. Enclosing shell; 23. Carrying frame; 24. Driving blade; 25. Limiting column; 30. Lower driving cylinder; 31. Lower pressure plate; 32. Lower baffle plate; 33. Material hole; 34. Step; 35. Adjusting plate; 36. Adjusting groove; 37. Accommodating chamber; 40. Upper driving cylinder; 41. Upper pressure plate; 42. Upper baffle plate; 43. Material stop frame; 50. Annular groove; 51. Partition plate; 52. Sliding hole; 53. Connecting column; 54. Upper sealing ring; 55. Lower sealing ring; 56. Upper slot; 57. Lower insert block; 60. Mounting slot; 61. Upper insert block; 70. Accommodating slot; 71. Lifting ring; 72. Side plate; 73. Electric push rod; 74. Lower slot. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0032] When polishing a workpiece, the existing abrasive flow machining equipment generally squeezes the abrasive upwards, and the abrasive is ejected upwards. Finally, the abrasive is collected again and added to the equipment for squeezing again for recycling. However, this method requires repeated recycling of the abrasive, which not only increases the workload of the workers, but also reduces the work efficiency. Therefore, the present invention proposes the following technical solutions to solve this technical problem.

[0033] like Figures 1 to 9 As shown, a specific embodiment of an impeller polishing device of the present invention includes a base 10, a cylinder, a lower extrusion module, an upper extrusion module, a feeding module and a sealing module.

[0034] like Figure 1 , Figure 2 and Figure 7 As shown, the cylinder includes a lower cylinder 11, an upper cylinder 12 and a connecting shell 13. The lower cylinder 11 is vertically fixedly mounted on the base 10, and the lower cylinder 11 is an upper open structure. The upper cylinder 12 is located above the lower cylinder 11, and the upper cylinder 12 and the lower cylinder 11 are spaced apart and coaxially arranged, and the upper cylinder 12 is a lower open structure. In other words, the upper cylinder 12 and the lower cylinder 11 are symmetrically arranged, and the inner diameter and outer diameter of the upper cylinder 12 and the lower cylinder 11 are the same.

[0035] The connecting shell 13 fixedly connects the upper cylinder 12 and the lower cylinder 11. The connecting shell 13 is a semicircular ring structure. The inner side wall of the connecting shell 13 is fixedly connected to the outer side walls of the upper cylinder 12 and the lower cylinder 11 respectively, which plays a role in fixing the upper cylinder 12, thereby ensuring the interval arrangement of the upper cylinder 12 and the lower cylinder 11.

[0036] It is particularly emphasized that the chamber between the upper cylinder 12 and the lower cylinder 11 is used to install a loading module, so as to provide the workpieces to be processed into the device. The loading module will be described in detail later.

[0037] like Figure 2 , Figure 3 and Figure 8 As shown, the lower extrusion module includes a lower driving cylinder 30 , a lower pressing plate 31 , a lower baffle 32 and an adjusting plate 35 .

[0038] The lower driving cylinder 30 is fixedly mounted on the bottom of the lower cylinder 11, and the telescopic portion of the lower driving cylinder 30 extends to the inner side of the lower cylinder 11, and the telescopic portion of the lower driving cylinder 30 is fixedly mounted with a lower pressing plate 31. The lower pressing plate 31 is a circular structure, and the outer peripheral wall of the lower pressing plate 31 is slidably matched with the inner side wall of the lower cylinder 11. The lower driving cylinder 30 can drive the lower pressing plate 31 to slide up and down along the axial direction of the lower cylinder 11.

[0039] The inner side of the lower cylinder 11 carries abrasives, so that the lower pressing plate 31 can push the abrasives to move.

[0040] A lower baffle 32 is fixedly installed on the inner side of the lower cylinder 11 near the upper opening. In this embodiment, the lower baffle 32 is welded to the lower cylinder 11. The lower baffle 32 is covered with material holes 33 that penetrate up and down, and the material holes 33 are square structures. Steps 34 are arranged on the side walls opposite to the left and right directions of the material holes 33, and the plane of the steps 34 is arranged upward.

[0041] An adjustment plate 35 is rotatably mounted above the steps 34 on both sides. In this embodiment, the vertical cross section of the adjustment plate 35 is a teardrop-shaped structure. In other embodiments, the adjustment plate 35 can also be a rectangular or square plate-shaped structure. The adjustment plate 35 has a head and a tail. The head is a sharper end of the adjustment plate 35, and the tail is a more rounded end of the adjustment plate 35. The front and rear sides of the tail of the adjustment plate 35 are rotatably fitted on the front and rear side walls of the material hole 33 through a rotating shaft.

[0042] A square adjustment slot 36 is formed at the head of each of the two adjustment plates 35 , and the adjustment slots 36 on the two adjustment plates 35 are at the same position.

[0043] It is particularly noted that the adjustment plates 35 can rotate along the rotation axis extending in the front-to-back direction. When the two adjustment plates 35 rotate toward the middle direction, the two adjustment plates 35 can rotate to a horizontal state. At this time, the heads of the two adjustment plates 35 abut against each other, thereby blocking the material hole 33. The adjustment slots 36 on the two adjustment plates 35 cooperate together to form a complete square through hole, the area of ​​which is much smaller than the area of ​​the material hole 33.

[0044] When the two adjustment plates 35 rotate away from the middle, until the two adjustment plates 35 rotate to the maximum angle, there is a certain distance between the head of each adjustment plate 35 and the side wall (the side wall in the left and right direction) of the material hole 33 on that side. In other words, a cavity with an upper opening is formed between the adjustment plate 35 on each side and the side wall of the material hole 33 on that side, and the cavity is the accommodating cavity 37.

[0045] When the lower driving cylinder 30 drives the lower pressing plate 31 to push the abrasive upward, the abrasive will pass through the material hole 33 on the lower baffle plate 32 and contact the workpiece. When the abrasive passes through the material hole 33, the abrasive will push the two adjustment plates 35 upward, so that the two adjustment plates 35 rotate upward to be in an open state, ensuring that the abrasive passes through the material hole 33. After the abrasive passes through the workpiece, it will enter the upper extrusion module, and then the upper extrusion module will squeeze the abrasive downward. After the abrasive passes through the workpiece, it needs to pass through the material hole 33 on the lower baffle plate 32 and enter the lower cylinder 11 again. When the abrasive passes through the material hole 33 downward, a part of the abrasive will enter the accommodating chamber 37 on both sides. As the material continues to enter the accommodating chamber 37, it will force the adjustment plates 35 on both sides to rotate inward until the adjustment plates 35 on both sides rotate to a horizontal state. At this time, the abrasive entering the material hole 33 can only pass through the through holes formed by the two adjustment grooves 36.

[0046] like Figure 2 The upper extrusion module includes an upper driving cylinder 40, an upper pressing plate 41 and an upper baffle 42.

[0047] The upper driving cylinder 40 is fixedly mounted on the top of the upper cylinder 12, and the telescopic portion of the upper driving cylinder 40 extends into the interior of the upper cylinder 12, and the telescopic portion of the upper driving cylinder 40 is fixedly mounted with an upper pressing plate 41, which is a circular structure, and the outer peripheral wall of the upper pressing plate 41 is slidably matched with the inner side wall of the upper cylinder 12. The upper driving cylinder 40 can drive the upper pressing plate 41 to slide up and down along the axial direction of the upper cylinder 12.

[0048] An upper baffle 42 is fixedly installed near the lower opening of the upper cylinder 12, and the structure of the upper baffle 42 is the same as that of the lower baffle 32. It is particularly noted that the upper baffle 42 is radially symmetrically arranged with the lower baffle 32, that is, the plane of the step 34 in the feeding hole 33 on the upper baffle 42 is arranged downward, and the adjustment plates 35 on both sides of the feeding hole 33 are arranged at the position of the feeding hole 33 near the lower opening, so the adjustment plate 35 on the upper baffle 42 is rotated downward to open.

[0049] First, the lower driving cylinder 30 drives the lower pressing plate 31 to push the abrasive upward, and the abrasive will pass through the material hole 33 on the lower baffle plate 32 and contact the workpiece. When the abrasive passes through the material hole 33, the abrasive will push the two adjustment plates 35 upward, so that the two adjustment plates 35 rotate upward to an open state, ensuring that the abrasive passes through the material hole 33. After passing through the workpiece, the abrasive continues to move upward and contacts the upper baffle plate 42, so that the abrasive passes through the material hole 33 on the upper baffle plate 42 and enters the upper cylinder 12. A portion of the abrasive will enter the accommodating chamber 37 on both sides of the material hole 33 on the upper baffle plate 42. As the material continues to enter the accommodating chamber 37, the adjustment plates 35 on both sides will be forced to rotate inward until the adjustment plates 35 on both sides rotate to a horizontal state. At this time, the abrasive entering the material hole 33 can only pass through the through hole formed by the two adjustment grooves 36. The material can quickly pass through the lower baffle 32. When it reaches the upper baffle 42, the pressure of pushing the abrasive upward will increase because it needs to pass through the through holes on the upper baffle 42, so the abrasive can be ejected from the through holes, increasing the friction between the abrasive and the workpiece, and ensuring the polishing effect of the abrasive on the workpiece. After the abrasive in the lower cylinder 11 is squeezed, the lower driving cylinder 30 drives the lower pressure plate 31 to return, and most of the abrasive will enter the upper cylinder 12. Then the abrasive in the upper cylinder 12 is squeezed downward. Similarly, the material hole 33 on the upper baffle 42 is opened, and the material hole 33 on the lower baffle 32 is closed. The abrasive can only be ejected from the through holes in the material hole 33 on the lower baffle 32. In this cycle, the workpiece is polished.

[0050] In other modified embodiments, a sliding plate (not shown in the figure) can be slidably mounted on the adjustment plate 35, and the sliding plate can change the size of the adjustment slot 36, thereby adjusting the size of the through hole. In this way, the pressure of the abrasive ejected from the through hole can be controlled, and can be adjusted according to the different polishing degrees of the workpiece.

[0051] like Figure 2 , Figure 5 and Figure 7 As shown, the loading module includes a loading seat 20 , a driving motor 21 , a sealing shell 22 , a supporting frame 23 and a material blocking frame 43 .

[0052] The material loading seat 20 is a circular ring structure that is connected from top to bottom. The material loading seat 20 is rotatably mounted on the outer wall of the lower cylinder 11, and the upper surface of the material loading seat 20 is flush with the lower surface of the upper cylinder 12, and the lower surface of the material loading seat 20 is flush with the upper surface of the lower cylinder 11. A driving motor 21 is installed on the lower cylinder 11 to drive the material loading seat 20 to rotate.

[0053] The front side of the chamber between the upper cylinder 12 and the lower cylinder 11 has an arc-shaped opening, and the driving motor 21 drives the loading seat 20 to rotate into the chamber between the upper cylinder 12 and the lower cylinder 11. It is particularly noted that the inner diameter and outer diameter of the loading seat 20 are the same as those of the cylinder. When the driving motor 21 drives the loading seat 20 to rotate into the chamber between the upper cylinder 12 and the lower cylinder 11, the loading seat 20 is coaxially arranged with the upper cylinder 12 and the lower cylinder 11, connecting the upper cylinder 12 and the lower cylinder 11 together.

[0054] The outer side of the material loading seat 20 is covered with a closed shell 22, and the height of the closed shell 22 is greater than the height of the material loading seat 20. When the material loading seat 20 rotates into the chamber between the upper cylinder 12 and the lower cylinder 11, the closed shell 22 will be opposite to the connecting shell 13, and the inner wall of the closed shell 22 will abut against the outer wall of the upper cylinder 12 and the lower cylinder 11. The closed shell 22 can cover the connection seams between the material loading seat 20 and the upper cylinder 12 and the lower cylinder 11, respectively, to play a protective and sealing role.

[0055] A carrier 23 is rotatably mounted on the inner side of the loading seat 20 near the bottom. The inner side of the carrier 23 is made of a plurality of rods cross-welded, so that the abrasive can smoothly pass through the carrier 23 through the gap. The carrier 23 is coaxially arranged with the loading seat 20. When a workpiece needs to be placed, the driving motor 21 drives the loading seat 20 to rotate to the outside of the cylinder, and then the workpiece is placed on the carrier 23. Then the driving motor 21 drives the loading seat 20 to rotate into the chamber between the upper cylinder 12 and the lower cylinder 11.

[0056] A material stopper 43 is rotatably mounted at a position of the upper cylinder 12 near the lower opening. The material stopper 43 is coaxially arranged with the upper cylinder 12. In this embodiment, the material stopper 43 is arranged flush with the lower edge of the upper cylinder 12. It is particularly noted that the material stopper 43 has the same structure as the carrier 23. The carrier 23 can support the workpiece. The material stopper 43 is located above the workpiece, which is equivalent to limiting the workpiece between the material stopper 43 and the carrier 23. When the abrasive inside the cylinder flows up and down, it limits the workpiece.

[0057] When the abrasive passes through the material stopper 43 or the carrier 23 and then passes through the workpiece, there will be contact between the workpiece and the rod on the material stopper 43 or the carrier 23. For example, when the abrasive flows upward, it will push the workpiece to move upward, and the workpiece will conflict with the rod on the material stopper 43. The part of the area where the workpiece conflicts with the rod may not be able to contact the abrasive, so that the abrasive cannot fully rub against the workpiece, resulting in insufficient polishing. Therefore, in order to solve this problem, a driving blade 24 is set on the material stopper 43 and the carrier 23, and a limit column 25 is also set on the loading seat 20, which will be described in detail below.

[0058] like Figure 7 As shown, the inner side walls of the material retaining frame 43 and the carrier frame 23 are evenly provided with driving blades 24 along the circumference thereof, and the driving blades 24 are arranged obliquely. For example, when the abrasive passes through the carrier frame 23, the abrasive contacts the driving blades 24 on the carrier frame 23, and the abrasive passes along the inclined surface of the driving blades 24, thereby giving a driving force to the driving blades 24, forcing the driving blades 24 to drive the carrier frame 23 to rotate. The working principle of the material retaining frame 43 is the same. The contact position between the material retaining frame 43 and the rod body on the carrier frame 23 and the workpiece can be changed. It is particularly emphasized that since the abrasive reciprocates up and down, the rotation direction of the material retaining frame 43 or the carrier frame 23 is opposite.

[0059] In order to prevent the workpiece from rotating with the material blocking frame 43 or the supporting frame 23, a limit column 25 is set on the side wall of the loading seat 20. When the workpiece is placed on the supporting frame 23, the limit column 25 is located between the two blades on the workpiece. As the material blocking frame 43 or the supporting frame 23 continues to rotate, the workpiece may be driven to rotate together, but due to the limitation of the limit column 25, the workpiece can only rotate back and forth a short distance.

[0060] For example, when the workpiece rotates clockwise, after a short distance, the limit post 25 will abut against the workpiece blade, so that the workpiece can no longer rotate. Then when the workpiece rotates counterclockwise, after a short distance, the limit post 25 will abut against the adjacent blade on the other side of the workpiece, so that the workpiece can no longer rotate. The workpiece can only rotate back and forth continuously. In this way, the contact position between the workpiece and the rod body on the stop frame 43 or the carrier frame 23 can be continuously changed to ensure sufficient friction between the abrasive and the workpiece, thereby improving the uniformity of polishing.

[0061] like Figure 4 , Figure 6 , Figure 7 and Fig. 9 As shown, the sealing module includes an annular groove 50, a partition plate 51, a connecting column 53, an upper sealing ring 54, a lower sealing ring 55 and a lifting ring 71.

[0062] The material loading seat 20 is provided with an annular groove 50 that passes through from top to bottom, and a partition plate 51 is provided in the middle of the annular groove 50, and the partition plate 51 divides the annular groove 50 into two parts, an upper part and an lower part. The partition plate 51 is provided with a plurality of sliding holes 52 that pass through from top to bottom along its circumference, and a connecting column 53 is installed in the sliding hole 52 for sliding up and down. An upper sealing ring 54 is fixedly installed on the upper end of the connecting column 53, and a lower sealing ring 55 is fixedly installed on the lower end of the connecting column 53. The upper sealing ring 54 is located above the annular groove 50, and the lower sealing ring 55 is located below the annular groove 50. A spring is provided on the connecting column 53, one end of the spring is connected to the connecting column 53, and the other end is connected to the partition plate 51, so that when the connecting column 53 drives the upper sealing ring 54 and the lower sealing ring 55 to slide up and down, the spring can help them reset. The material of the upper sealing ring 54 and the lower sealing ring 55 are both rubber.

[0063] It is particularly noted that the upper sealing ring 54 is flush with the upper surface of the material loading seat 20, and an upper slot 56 is provided on the upper sealing ring 54, and the upper slot 56 is arranged around the material loading seat 20. The cross section of the upper slot 56 is an isosceles trapezoidal structure, and the bottom side of the isosceles trapezoid is set upward. A downwardly protruding lower plug block 57 is provided at the bottom of the lower sealing ring 55, and the cross section of the lower plug block 57 is an isosceles trapezoidal structure, and the bottom side of the isosceles trapezoid is set upward. The lower plug block 57 is flush with the lower surface of the material loading seat 20.

[0064] An annular mounting groove 60 is provided at the bottom of the upper cylinder 12, and an upper plug block 61 is provided in the mounting groove 60, and the lower surface of the upper plug block 61 is flush with the lower surface of the upper cylinder 12. The cross section of the upper plug block 61 is an isosceles trapezoidal structure, and the bottom side of the isosceles trapezoid is arranged upward. The upper plug block 61 is arranged correspondingly to the upper slot 56, and the volume of the upper plug block 61 is larger than the volume of the upper slot 56.

[0065] An annular receiving groove 70 is provided above the lower cylinder 11, and a lifting ring 71 is slidably fitted in the receiving groove 70, and the upper surface of the lifting ring 71 is flush with the upper surface of the lower cylinder 11. The lifting ring 71 is made of rubber, and a plurality of side plates 72 are provided on the outer wall of the lifting ring 71 along its circumference. An opening is provided on the lower cylinder 11, and the side plates 72 extend through the opening on the lower cylinder 11 to the outside of the lower cylinder 11. An electric push rod 73 is fixedly installed on the outer wall of the lower cylinder 11, and the telescopic part of the electric push rod 73 is fixedly connected to the side plates 72, so that the electric push rod 73 can drive the lifting ring 71 to rise and fall along the receiving groove 70.

[0066] An annular lower slot 74 is provided above the lifting ring 71 . The cross-section of the lower slot 74 is an isosceles trapezoidal structure, and the bottom side of the isosceles trapezoid is set upward. The lower insert block 57 is set correspondingly to the lower slot 74 up and down, and the volume of the lower insert block 57 is larger than the volume of the lower slot 74 .

[0067] After the loading of the workpiece is completed, the driving motor 21 drives the loading seat 20 to rotate into the chamber between the upper cylinder 12 and the lower cylinder 11. Then the electric push rod 73 drives the lifting ring 71 to rise along the accommodating groove 70, and the lower insert block 57 will be inserted into the lower slot 74. Since the volume of the lower insert block 57 is larger than the volume of the lower slot 74, the lower slot 74 will be squeezed to both sides. When the lifting ring 71 is raised, its top has passed the upper surface of the lower cylinder 11, so the lower slot 74 of the lifting ring 71 is located at the connection between the loading seat 20 and the lower cylinder 11. The lower insert block 57 squeezes the lower slot 74 to both sides, which can enhance the sealing effect of the connection between the loading seat 20 and the lower cylinder 11.

[0068] The lifting ring 71 will push the upper sealing ring 54 and the lower sealing ring 55 upward. The upper slot 56 on the upper sealing ring 54 will move upward and will be located at the connection between the loading seat 20 and the upper cylinder 12. At the same time, the upper insert block 61 will be inserted into the upper slot 56. Since the volume of the upper insert block 61 is larger than the volume of the upper slot 56, the upper insert block 61 will squeeze the upper slot 56 to both sides, which can enhance the sealing of the connection between the loading seat 20 and the upper cylinder 12.

[0069] It is particularly noted that, in other embodiments, the shapes of the upper insert block 61 , the upper slot 56 , the lower insert block 57 and the lower slot 74 are not limited to an isosceles trapezoidal structure, but may also be other structures such as a triangle and a rectangle.

[0070] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An impeller polishing device, comprising: A base (10) and a vertically arranged cylinder, wherein the cylinder has abrasive material, characterized in that two groups of extrusion modules and a material loading seat (20) are arranged in the cylinder, the two groups of extrusion modules are arranged in a mirror image, and are arranged at the upper and lower ends of the cylinder; each group of extrusion modules includes a telescopic component arranged on the cylinder, a pressure plate arranged on the telescopic part of the telescopic component and sliding along the axial direction of the cylinder, a baffle fixed to the inner wall of the cylinder, square material holes (33) distributed on the baffle and passing through from top to bottom, and an adjustment unit arranged in each material hole (33); The adjustment unit comprises two adjustment plates (35) respectively arranged on the left and right sides of the material hole (33); one end of the adjustment plate (35) is rotatably mounted on the material hole (33) around an axis extending forward and backward, and an adjustment slot (36) is provided at the end of the adjustment plate (35); the adjustment plate (35) has two moving positions; in the first position, the two adjustment plates (35) are in a horizontal state and the ends thereof abut against each other, closing the material hole (33); the two adjustment slots (36) form a through hole, so as to reduce the size of the abrasive that can pass through; in the second position, the two adjustment plates (35) are in an inclined state, opening the material hole (33); an open accommodating cavity (37) is formed between the adjustment plate (35) and the side wall of the material hole (33) in the left and right directions; the accommodating cavity (37) is for the abrasive to enter, so as to push the adjustment plate (35) to rotate; the pressure plate pushes the abrasive to reciprocate through the material hole (33); and the adjustment plates (35) on the two sets of baffles are in opposite states; The side wall of the cylinder has an opening, and the loading seat (20) is rotatably matched with the opening so that the loading seat (20) can enter and exit the cylinder. When the loading seat (20) is located in the cylinder, it is coaxially arranged with the cylinder.

2. An impeller polishing device according to claim 1, characterized in that: The cylinder comprises a lower cylinder (11), an upper cylinder (12) and a connecting shell (13); the lower cylinder (11) is vertically fixedly mounted on the base (10); the lower cylinder (11) is an upper open structure; the upper cylinder (12) and the lower cylinder (11) are spaced apart from each other and are coaxially arranged; the upper cylinder (12) is a lower open structure; the connecting shell (13) is an arc-shaped structure; the upper and lower sides of the connecting shell (13) are respectively fixedly connected to the lower cylinder (11) and the upper cylinder (12).

3. An impeller polishing device according to claim 1, characterized in that: Steps (34) are provided on the side walls of the material hole (33) opposite to each other in the left and right directions, and the adjustment plate (35) is located on the side to which the horizontal surface of the step (34) faces.

4. The impeller polishing device according to claim 1, characterized in that: The cross section of the adjustment plate (35) in the vertical direction is in the shape of a water drop. The adjustment plate (35) has a head and a tail, the head is a sharp end, and the tail is a rounded end. The front and rear sides of the tail of the adjustment plate (35) are rotatably engaged with the front and rear side walls of the material hole (33) via a rotating shaft.

5. The impeller polishing device according to claim 2, characterized in that: The loading seat (20) is a circular ring structure that penetrates from top to bottom. The upper and lower ends of the loading seat (20) are respectively slidably matched with the upper cylinder (12) and the lower cylinder (11). A bearing frame (23) is installed on the inner side of the loading seat (20) near the bottom, and a material blocking frame (43) is installed near the lower part of the upper cylinder (12).

6. An impeller polishing device according to claim 5, characterized in that: The bearing frame (23) is rotatably matched with the material loading seat (20), and the material blocking frame (43) is rotatably matched with the upper cylinder (12). A plurality of driving blades (24) are provided on the bearing frame (23) and the material blocking frame (43) along their circumferences, and a limiting column (25) is fixedly connected to the side wall of the material loading seat (20).

7. An impeller polishing device according to claim 6, characterized in that: The material loading seat (20) is provided with an annular groove (50) extending vertically, a partition plate (51) is provided in the annular groove (50), the partition plate (51) is provided with a sliding hole (52) extending vertically, a connecting column (53) is connected to the sliding hole (52) by a spring for sliding upward and downward movement, an upper sealing ring (54) is fixedly mounted on the upper end of the connecting column (53), a lower sealing ring (55) is fixedly mounted on the lower end of the connecting column (53), an annular upper slot (56) is provided on the upper sealing ring (54), and the lower sealing ring (55) is provided with a sealing ring for sealing the upper sealing ring (54). The bottom of the upper cylinder (12) is provided with an annular lower insert block (57), the bottom of the upper cylinder (12) is provided with an annular mounting groove (60), an annular upper insert block (61) is provided in the mounting groove (60), and the upper insert block (61) corresponds to the upper slot (56) in upper and lower directions; the lower cylinder (11) is provided with an annular receiving groove (70), a lifting ring (71) is slidably matched in the receiving groove (70), an annular lower slot (74) is provided on the lifting ring (71), and the lower insert block (57) and the lower slot (74) are arranged in upper and lower directions.

8. An impeller polishing device according to claim 7, characterized in that: The upper insert block (61), the upper slot (56), the lower insert block (57) and the lower slot (74) are all in the shape of an isosceles trapezoidal structure.

Images