Bottle blank dust removal device

Abstract

The utility model discloses a bottle blank dust removal device, which comprises a turntable, a dust collection box and a dust removal component with an air blowing pipe, the dust removal component is mounted on the turntable, the dust collection box is positioned on one side of the turntable, a blank clamping ring is arranged on the turntable, a guide ring positioned above the blank clamping ring is further arranged on the turntable, and the air blowing pipe penetrates through the guide ring. The dust collection box is provided with a dust collection cavity with the constant height and a suction inlet communicated with the dust collection cavity, the height of the suction inlet is the same as that of the dust collection cavity, a guide face with the arc-shaped axial section is arranged at the bottom of the guide ring, and the area between the upper surface of the blank clamping ring and the guide face is directly communicated with the suction inlet. The height of the dust collection cavity is set to be constant and consistent with that of the suction inlet, so that when waste gas enters the dust collection cavity through the suction inlet and flows in the dust collection cavity, airflow is stable in the flowing process, turbulent flow cannot be generated in the flowing process, and then the turbulent flow is prevented from influencing smooth flowing of the waste gas in the dust collection cavity; the dust collection box can stably collect dust, and the dust collection effect is improved.

Description

Technical Field

[0001] The utility model belongs to the field of dust removal equipment, and in particular relates to a bottle blank dust removal device. Background Art

[0002] In the field of aseptic filling, especially in aseptic filling technology based on blow-fill-seal integrated equipment, the pre-treatment of the bottle blank is very important, and dust removal of the bottle blank is particularly critical during the pre-treatment.

[0003] At present, in the prior art, a blowing dust removal structure is usually provided on the rotating conveying mechanism, such as the technical solution recorded in the invention patent with application number 201810143519.3 (published on August 24, 2018, and the patent name is Internal dust removal device and dust removal method for at least one preform). The patent document records that the opening 18 of the preform is connected to the nozzle 128 of the suction device 120 through the capture device 130. When working, the injection pipe 110 continuously blows air to the bottom of the inner side of the preform, and the suction device 120 generates negative pressure. Based on the pressure difference factor, the nozzle 128 is driven to inhale the waste gas blown out from the inside of the preform into the cavity 132 of the capture device 130, and the waste gas finally enters the inside of the suction device 120 to collect the waste gas discharged from the preform.

[0004] However, this technical solution has the following disadvantages: 1. The cavity 132 on the capture device 130 is in the shape of a channel with ventilation at both ends, one end of which covers the neck 14 of the bottle blank to communicate with the opening 18, and the other end is aligned with and communicated with the nozzle 128. In order to continue the negative pressure environment of the nozzle 128, it serves as a transition piece between the opening 18 of the bottle blank and the nozzle 128, which increases the time required for the exhaust gas and the dust carried by it to enter and diffuse into the interior of the suction device 120; 2. The inner diameter of the nozzle 128 of the suction device 120 and the inner diameter of the cavity 132 are both relatively narrow. Such a design makes the exhaust gas flow at a high speed when passing through the cavity 132 and the nozzle 128, and the internal space of the suction device 120 has a large volume as a dust collection area. Therefore, when the exhaust gas flows from the nozzle 128 into the internal space of the suction device 120, the high-speed flowing gas will generate turbulence at the outlet of the nozzle 128, which will hinder the exhaust gas that subsequently flows from the nozzle 128 into the suction device 120, resulting in the exhaust gas being unable to flow smoothly in the suction device 120. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a bottle preform dust removal device to solve the problem that the waste gas flowing out of the bottle preform does not flow smoothly in the dust collecting box.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme: a bottle blank dust removal device, comprising a turntable, a dust collecting box and a dust removal component with a blowing pipe, the dust removal component is installed on the turntable, the dust collecting box is located on one side of the turntable, a blank holding ring is provided on the turntable, and a guide ring located above the blank holding ring is also provided on the turntable, the blowing pipe is arranged through the guide ring, the dust collecting box has a dust collecting chamber with a constant height and a suction port connected to the dust collecting chamber, the suction port is distributed in an arc shape along the edge of the guide ring, and the height of the suction port is the same as the height of the dust collecting chamber, the bottom of the guide ring is provided with a guide surface with an arc-shaped axial cross section, the guide surface is continuously distributed around the center line of the turntable and is annular, one side of the guide surface extends to the suction port, and the other side of the guide surface extends to the blank holding ring, and the area between the upper surface of the blank holding ring and the guide surface is directly connected to the suction port.

[0007] In the above-mentioned preform dust removal device, an air extraction hole is provided on the side of the dust collecting box away from the turntable, and the width of the dust collecting cavity gradually decreases in the direction from the suction port to the air extraction hole.

[0008] In the above-mentioned preform dust removal device, the arc of the suction port is α, which satisfies 90°<α<180°.

[0009] In the above-mentioned preform dust removal device, the curvature of the guide surface is 90 degrees.

[0010] In the above-mentioned bottle blank dust removal device, the blank clamping ring is provided with multiple clamping sockets for clamping the bottle blanks, the guide ring is provided with through holes corresponding to the clamping sockets, and the air blow pipe passes through the guide ring through the through holes to remove dust from the bottle blank clamped on the clamping sockets.

[0011] In the above-mentioned bottle blank dust removal device, the turntable includes a central disk with annular positioning ribs on the outer wall and a rotating shaft that drives the central disk to rotate. The guide ring and the blank clamping ring are arranged on the outer circumference of the central disk and respectively abut against the upper and lower sides of the annular positioning ribs. The guide ring and the blank clamping ring are fixedly connected to the central disk by bolts.

[0012] In the above-mentioned bottle blank dust removal device, the dust removal assembly includes a lifting mechanism and a dust removal mechanism with a blowing pipe. The lifting mechanism includes a three-dimensional cam arranged below the turntable and a lifting rod passing through the turntable. The top of the three-dimensional cam has a cam surface. The top of the lifting rod is connected to the dust removal mechanism, and the bottom of the lifting rod is against the cam surface. The lifting rod rotates with the turntable to drive the dust removal mechanism to move up and down under the push of the cam surface with changing height.

[0013] In the above-mentioned bottle blank dust removal device, the lifting mechanism also includes a tube sleeve fixed on the turntable, the tube sleeve is inserted into the turntable, the lifting rod is inserted into the tube sleeve, and the lifting rod is also sleeved with an elastic member located below the tube sleeve. The elastic member is respectively abutted against the tube sleeve and the lifting rod to press the bottom of the lifting rod against the cam surface.

[0014] The beneficial effects of the utility model are:

[0015] A preform dust removal device includes a turntable, a dust collection box and a dust removal assembly with a blow pipe, the dust removal assembly is installed on the turntable, the dust collection box is located on one side of the turntable, a blank holder ring is provided on the turntable, a guide ring is also provided on the turntable above the blank holder ring, the blow pipe is arranged through the guide ring, the dust collection box has a dust collection chamber with a constant height and a suction port connected to the dust collection chamber, the suction port is distributed in an arc shape along the edge of the guide ring, and the height of the suction port is the same as the height of the dust collection chamber, the bottom of the guide ring is provided with a guide surface with an arc-shaped axial section, the guide surface is continuously distributed around the center line of the turntable and is annular, one side of the guide surface extends to the suction port, the other side of the guide surface extends to the blank holder ring, and the area between the upper surface of the blank holder ring and the guide surface is directly connected to the suction port. The technical scheme has the following technical effects:

[0016] The utility model provides a guide ring, and provides a guide surface at the bottom of the guide ring to guide the waste gas, so that the open area of ​​the guide surface and the top surface of the blank ring is directly connected to the suction port, and the blowing pipe passing through the guide ring is extended into the bottle blank to blow air toward the bottom of the inner surface of the bottle blank, and the air flow flows from the bottom of the bottle blank to the top of the bottle blank, takes away the dust inside the bottle blank to form waste gas, and flows out from the bottle mouth at the top to the open area formed by the guide surface and the top surface of the blank ring, and negative pressure is formed in the dust collecting chamber at the same time, because the open area formed by the guide surface and the top surface of the blank ring is directly connected to the suction port, the dust collecting box can directly absorb the waste gas flowing out from the bottle mouth of the bottle blank through the suction port, the dust collecting path is short, and because the guide surface is arranged in an arc shape, the waste gas can be guided to assist the waste gas to flow to the suction port, so the time for the waste gas to enter the dust collecting box can also be shortened. By setting the dust collecting chamber to a constant height and the height being consistent with the suction port, when the exhaust gas enters the dust collecting chamber through the suction port and flows in the dust collecting chamber, the airflow is stable during the entire flow process and no turbulence is generated during the flow process, thereby avoiding turbulence affecting the smooth flow of the exhaust gas in the dust collecting chamber, so that the dust collecting box can collect dust stably and the dust collection effect is improved.

[0017] An exhaust hole is provided on the side of the dust box away from the turntable, and the width of the dust collecting chamber gradually decreases in the direction from the suction port to the exhaust hole. The exhaust hole can discharge the waste gas in the dust collecting chamber and maintain the negative pressure state in the dust collecting chamber. The width of the dust collecting chamber gradually decreases in the direction from the suction port to the exhaust hole, so that the longitudinal cross-sectional area of ​​the dust collecting chamber along the flow direction of the gas gradually decreases, and then when the waste gas flows in the dust collecting chamber, the flow velocity gradually increases from the suction port to the exhaust hole, so that the waste gas in the dust collecting chamber is quickly discharged from the exhaust hole, avoiding the accumulation of waste gas in the dust collecting chamber affecting the entry of subsequent waste gas.

[0018] The arc of the suction port is α, which satisfies 90°<α<180°. The suction port can fully cover the area where the blowing pipe on the turntable extends into the bottle blank, that is, the suction port can fully cover the area of ​​the waste gas in the bottle blank blown out by the suction pipe, and the dust collection effect is good, avoiding the poor dust collection effect of the dust box due to too small an arc, and avoiding the dust box taking up too much space and being difficult to install between the turntable due to too large an arc.

[0019] The curvature of the guide surface is 90 degrees, so that the tangent line at the joint between the guide surface and the dust box extends horizontally, so that the exhaust gas guided by the guide surface can smoothly enter the suction port, and the tangent line of the guide surface closest to the blank clamping ring extends vertically, so as to directly guide the upward exhaust gas flowing out of the bottle mouth of the bottle blank, so that the exhaust gas flows from the bottle blank to the suction port more smoothly.

[0020] The blank holder ring is provided with a plurality of bayonet holes for clamping the bottle blanks, and the guide ring is provided with through holes corresponding to the bayonet holes. The air blowing pipe passes through the guide ring through the through holes to remove dust from the bottle blank clamped on the bayonet holes. The setting of the through holes allows the guide ring to avoid the air blowing pipe, and at the same time avoids the guide ring to reserve too much space for avoiding the air blowing pipe, causing the exhaust gas to escape from the space, and ensures that the exhaust gas is collected by the dust collecting box.

[0021] The turntable includes a center disk with an annular positioning rib on the outer wall and a rotating shaft for driving the center disk to rotate. The guide ring and the blank ring are sleeved on the outer circumference of the center disk and respectively abut against the upper and lower sides of the annular positioning rib. The guide ring and the blank ring are fixedly connected to the center disk by bolts. By separately arranging the center disk, the guide ring and the blank ring and fixing them by bolts, it is convenient for production and assembly. When the guide ring or the blank ring is damaged, the staff can replace the guide ring or the blank ring separately, thereby reducing the maintenance cost.

[0022] The dust removal assembly includes a lifting mechanism and a dust removal mechanism with an air blowing pipe. The lifting mechanism includes a three-dimensional cam arranged below the turntable and a lifting rod passing through the turntable. The top of the three-dimensional cam has a cam surface. The top of the lifting rod is connected to the dust removal mechanism. The bottom of the lifting rod abuts against the cam surface. The lifting rod rotates with the turntable to drive the dust removal mechanism to move up and down under the push of the cam surface with varying height. When the central disc rotates, the lifting rod rotates with the central disc. The bottom of the lifting rod rises or falls under the push of the cam surface with varying height, thereby driving the dust removal mechanism to move up and down, so that the dust removal mechanism extends into or leaves the interior of the preform. When the lifting rod rotates with the central disc to the area opposite to the dust collecting box, the bottom of the lifting rod is just at the lower part of the cam surface, so that the air blowing pipe extends into the interior of the preform, so that the dust collecting box can collect the waste gas blown out of the preform. The structure is simple and the dust removal effect is good.

[0023] The lifting mechanism also includes a sleeve fixed on the turntable, the sleeve is inserted on the turntable, the lifting rod is inserted in the sleeve, and an elastic member located below the sleeve is sleeved outside the lifting rod, and the elastic member is respectively against the sleeve and the lifting rod to press the bottom of the lifting rod against the cam surface. The lifting rod is inserted in the sleeve to avoid direct contact between the lifting pipe and the center disk, and to avoid wear between the lifting rod and the center disk during the lifting process. The top of the elastic member is against the sleeve, and the bottom of the elastic member is against the lifting rod to press the bottom of the lifting rod against the cam surface, ensuring that the cam surface pushes the lifting rod stably during the rotation of the center disk, thereby ensuring the stable rise and fall of the air blowing pipe and ensuring the dust removal effect.

[0024] The features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0026] Figure 1 It is a three-dimensional diagram of the preform dust removal device;

[0027] Figure 2 It is a cross-sectional view of a preform dust removal device;

[0028] Figure 3 for Figure 2 Enlarged view of part A.

[0029] Reference numerals:

[0030] 100, turntable; 110, center disc; 111, annular positioning rib; 112, mounting hole; 120, rotating shaft;

[0031] 200, dust collecting box; 210, dust collecting chamber; 220, suction port; 230, air extraction hole;

[0032] 300, dust removal assembly; 310, lifting mechanism; 311, three-dimensional cam; 3111, cam surface; 312, lifting rod; 313, pipe sleeve; 314, elastic member; 320, dust removal mechanism; 321, air blowing pipe;

[0033] 400, blank ring; 410, bayonet;

[0034] 500, guide ring; 510, guide surface; 520, through hole. DETAILED DESCRIPTION

[0035] The utility model provides a bottle blank dust removal device, comprising a turntable, a dust collecting box and a dust removal component with a blowing pipe, the dust removal component is installed on the turntable, the dust collecting box is located at one side of the turntable, a blank clamping ring is provided on the turntable, a guide ring located above the blank clamping ring is also provided on the turntable, the blowing pipe is arranged through the guide ring, the dust collecting box has a dust collecting chamber with a constant height and a suction port connected to the dust collecting chamber, the suction port is distributed in an arc shape along the edge of the guide ring, and the height of the suction port is the same as the height of the dust collecting chamber, a guide surface with an arc-shaped axial cross section is provided at the bottom of the guide ring, the guide surface is continuously distributed around the center line of the turntable and is annular, one side of the guide surface extends to the suction port, and the other side of the guide surface extends to the blank clamping ring, and the area between the upper surface of the blank clamping ring and the guide surface is directly connected to the suction port. The utility model provides a guide ring, and provides a guide surface at the bottom of the guide ring to guide the waste gas, so that the open area of ​​the guide surface and the top surface of the blank ring is directly connected to the suction port, and the blowing pipe passing through the guide ring is extended into the bottle blank to blow air toward the bottom of the inner surface of the bottle blank, and the air flow flows from the bottom of the bottle blank to the top of the bottle blank, takes away the dust inside the bottle blank to form waste gas, and flows out from the bottle mouth at the top to the open area formed by the guide surface and the top surface of the blank ring, and at the same time, negative pressure is formed in the dust collecting chamber, because the open area formed by the guide surface and the top surface of the blank ring is directly connected to the suction port, the dust collecting box can directly absorb the waste gas flowing out from the bottle mouth of the bottle blank through the suction port, the dust collecting path is short, and because the guide surface is arranged in an arc shape, the waste gas can be guided to assist the waste gas to flow to the suction port, so the time for the waste gas to enter the dust collecting box can be shortened. By setting the dust collecting chamber to a constant height and the height being consistent with the suction port, the exhaust gas enters the dust collecting chamber through the suction port and flows in the dust collecting chamber. The airflow is stable and no turbulence is generated during the flow process, thereby avoiding turbulence affecting the smooth flow of exhaust gas in the dust collecting chamber, so that the dust collecting box can collect dust stably and the dust collection effect is improved.

[0036] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] Example:

[0042] A bottle preform dust removal device, such as Figures 1 to 3As shown, it includes a turntable 100, a dust collecting box 200 and a dust removing assembly 300. The turntable 100 is provided with a blank holder ring 400. The turntable 100 conveys the bottle blanks on the blank holder ring 400 by rotation. The dust removing assembly 300 is installed on the turntable 100 and has a blowing pipe 321 for blowing air into the bottle blanks so as to blow the dust inside the bottle blanks out of the bottle blanks. The dust collecting box 200 is located at one side of the turntable 100 to collect the waste gas (i.e., the gas carrying dust) blown out of the bottle blanks. The turntable 100 is also provided with a guide ring 500, which is located above the blank holder ring 400. The air blowing pipe 321 is arranged through the guide ring 500. The dust box 200 has a dust collecting chamber 210 and a suction port 220. The suction port 220 is arranged on one side of the dust box 200 and communicates with the dust collecting chamber 210. The height of the dust collecting chamber 210 is constant, and the height of the suction port 220 is the same as the height of the dust collecting chamber 210. The side of the dust box 200 provided with the suction port 220 cooperates with the edge of the guide ring 500, so that the suction port 220 is distributed in an arc shape along the edge of the guide ring 500. A guide surface 510 is provided at the bottom of the guide ring 500. The guide surface 510 is continuously distributed around the center line of the turntable 100 and is annular, such as Figure 2 As shown, in the axial cross-sectional view of the turntable 100, the guide surface 510 is recessed toward the guide ring 500 and is arranged in an arc shape, one side of the guide surface 510 extends toward the suction port 220 of the dust box 200, and the other side of the guide surface 510 extends toward the blank holder ring 400, and the area between the guide surface 510 and the upper surface of the blank holder ring 400 is directly connected to the suction port 220. Preferably, the curvature of the guide surface 510 is 90 degrees, and the tangent line of the guide surface 510 at the joint with the dust box 200 extends horizontally, so that the exhaust gas guided by the guide surface 510 can smoothly enter the suction port 220, and the tangent line of the guide surface 510 closest to the blank holder ring 400 extends vertically, so as to directly guide the upward exhaust gas flowing out of the bottle mouth of the bottle blank, so that the exhaust gas flows from the bottle blank to the suction port 220 more smoothly.

[0043] The utility model provides a guide ring 500, and provides a guide surface 510 at the bottom of the guide ring 500 to guide the exhaust gas, so that the guide surface 510 and the open area on the top surface of the blank holder ring 400 are directly connected to the suction port 220, and the blowing pipe 321 passing through the guide ring 500 extends into the bottle blank to blow air toward the bottom of the inner surface of the bottle blank, and the air flow flows from the bottom of the bottle blank to the top of the bottle blank, taking away the dust inside the bottle blank to form the exhaust gas, and then flows out from the bottle mouth at the top to the guide surface 510 and the blank holder. The open area formed on the top surface of the ring 400 and the negative pressure formed in the dust collecting chamber 210, because the guide surface 510 and the open area formed on the top surface of the blank clamping ring 400 are directly connected to the suction port, the dust collecting box 200 can directly suck away the waste gas flowing out of the bottle mouth of the bottle blank through the suction port 220, and the dust collecting path is short. Moreover, because the guide surface 510 is arranged in an arc shape, the waste gas can be guided to assist the waste gas to flow to the suction port 220, so the time for the waste gas to enter the dust collecting box 200 can also be shortened. By setting the dust collecting chamber 210 to a constant height and its height is consistent with the suction port 220, when the waste gas enters the dust collecting chamber 210 through the suction port 220 and flows in the dust collecting chamber 210, the airflow is stable during the entire flow process, and no turbulence is generated during the flow process, thereby avoiding the turbulence from affecting the smooth flow of the waste gas in the dust collecting chamber 210, so that the dust collecting box 200 can stably collect dust and improve the dust collection effect.

[0044] like Figure 1 As shown, the dust box 200 in this embodiment is provided with an exhaust hole 230 on the side away from the turntable 100, and an exhaust component such as a turbine is connected to the exhaust hole 230 to quickly discharge the exhaust gas in the dust collecting chamber 210 through the exhaust hole 230 to maintain a negative pressure state in the dust box. Preferably, the exhaust hole 230 is arranged at the top of the dust box 200, and the width of the dust collecting chamber 210 gradually decreases from the suction port 220 to the exhaust hole 230, that is, the longitudinal cross-sectional area of ​​the dust collecting chamber 210 along the gas flow direction gradually decreases, so that when the exhaust gas flows in the dust collecting chamber 210, the flow velocity gradually increases from the suction port 220 to the exhaust hole 230, so that the exhaust gas in the dust collecting chamber 210 is quickly discharged from the exhaust hole 230, thereby avoiding the accumulation of exhaust gas in the dust collecting chamber 210 affecting the entry of subsequent exhaust gas.

[0045] The blank holder ring 400 in this embodiment is provided with a plurality of bayonet holes 410, and the bottle blanks are bayoneted to each bayonet hole 410 for transmission. The guide ring 500 is provided with through holes 520, and the through holes 520 correspond to the bayonet holes 410 one by one. The air blowing pipe 321 passes through the guide ring 500 through the through holes 520 to extend into the bottle blank to remove dust from the bottle blank bayonet hole 410. The provision of the through holes 520 allows the guide ring 500 to avoid the air blowing pipe 321, and at the same time prevents the guide ring 500 from reserving too much space for avoiding the air blowing pipe 321, thereby preventing the exhaust gas from escaping from the space, and ensuring that the exhaust gas is collected by the dust collecting box 200.

[0046] like Figure 3 As shown, in this embodiment, the turntable 100 includes a center disk 110 and a rotating shaft 120, the center disk 110 is connected to the top of the rotating shaft 120 to be linked with the rotating shaft 120, an annular positioning rib 111 is provided on the outer wall of the center disk 110, the annular positioning rib 111 is coaxial with the center disk 110 and is integrally arranged in the middle of the outer wall of the center disk 110, the guide ring 500 and the blank ring 400 are sleeved on the outer peripheral side of the center disk 110, the guide ring 500 is located above the annular positioning rib 111, the bottom of the guide ring 500 is against the top surface of the annular positioning rib 111, and the blank ring 400 is located on the annular positioning Below the positioning rib 111, the top of the blank ring 400 is against the bottom surface of the annular positioning rib 111, and the guide ring 500 and the blank ring 400 are fixedly connected to the center disk 110 by bolts, so that when the rotating shaft 120 drives the center disk 110 to rotate, the guide ring 500 and the blank ring 400 rotate together with the center disk 110. By setting the center disk 110, the guide ring 500 and the blank ring 400 separately and fixing them with bolts, it is convenient for production and assembly. At the same time, the staff can replace the guide ring 500 or the blank ring 400 separately when the guide ring 500 or the blank ring 400 is damaged, thereby reducing the maintenance cost.

[0047] In this embodiment, if Figure 2As shown, the dust removal assembly 300 includes a lifting mechanism 310 and a dust removal mechanism 320. The lifting mechanism 310 includes a three-dimensional cam 311 and a lifting rod 312. The three-dimensional cam 311 is sleeved on the outer peripheral side of the rotating shaft 120 below the turntable 100. The three-dimensional cam 311 remains fixed and does not rotate together with the rotating shaft 120. A cam surface 3111 is provided on the top of the three-dimensional cam 311. The height of the cam surface 3111 varies along the circumference of the three-dimensional cam 311. A mounting hole 112 is provided on the center disk 110, which penetrates the center disk 110 longitudinally. The lifting rod 312 is penetrated in the mounting hole 112 and can move up and down along the axial direction of the mounting hole 112. The top of the lifting rod 312 is located above the center disk 110 and is connected to the dust removal mechanism 320. The dust removal mechanism 320 has an air blowing pipe 321. The bottom of the lifting rod 312 is located below the center disk 110 and is against the cam surface 3111. When the center disk 110 rotates, the lifting rod 312 rotates together with the center disk 110, and the bottom of the lifting rod 312 rises or falls under the push of the cam surface 3111 with varying heights, thereby driving the dust removal mechanism 320 to move up and down, so that the dust removal mechanism 320 extends into or leaves the interior of the preform. When the lifting rod 312 rotates with the center disk 110 to an area close to the dust box 200, the bottom of the lifting rod 312 is just at the lower part of the cam surface 3111, so that the blowing pipe 321 extends into the interior of the preform, so that the dust box 200 can collect the waste gas blown out of the preform, and the dust removal effect is good. In order to avoid wear between the lifting rod 312 and the center disk 110 during the lifting process, the lifting mechanism 310 in this embodiment also includes a sleeve 313 fixed on the turntable 100, the sleeve 313 is inserted into the mounting hole 112, and the lifting rod 312 is inserted into the sleeve 313 to avoid direct contact between the lifting pipe and the center disk 110. An elastic member 314 is also sleeved on the outside of the lifting rod 312, and the elastic member 314 is located below the sleeve 313. The top of the elastic member 314 is against the sleeve 313, and the bottom of the elastic member 314 is against the lifting rod 312, so that the bottom of the lifting rod 312 is pressed against the cam surface 3111, ensuring that the cam surface 3111 stably pushes the lifting rod 312 during the rotation of the center disk 110, thereby ensuring the stable rise and fall of the blowing pipe 321 and ensuring the dust removal effect.

[0048] The curvature of the suction port 220 in this embodiment is α, which satisfies 90°<α<180°, so that the suction port 220 can fully cover the area where the blowing pipe 321 on the turntable 100 extends into the bottle blank, that is, the suction port 220 can fully cover the area of ​​the waste gas in the bottle blank blown out by the suction pipe, and the dust collection effect is good, avoiding the poor dust collection effect of the dust collecting box 200 caused by a small curvature, and avoiding the dust collecting box 200 occupying too much space and being difficult to install between the turntable 100 due to a large curvature. Preferably, α is 136 degrees. The setting of this angle can not only cover the area where the blowing pipe 321 extends into the bottle blank, but also avoid the dust collecting box 200 being too large, thereby reducing the production and processing costs.

[0049] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A preform dust removal device, comprising a turntable, a dust collecting box and a dust removal assembly with an air blowing pipe, wherein the dust removal assembly is mounted on the turntable, the dust collecting box is located on one side of the turntable, and a blank clamping ring is provided on the turntable, characterized in that: The turntable is also provided with a guide ring located above the blank ring, the air blowing pipe is arranged through the guide ring, the dust collecting box has a dust collecting chamber with a constant height and a suction port connected to the dust collecting chamber, the suction port is distributed in an arc shape along the edge of the guide ring, and the height of the suction port is the same as the height of the dust collecting chamber, the bottom of the guide ring is provided with a guide surface with an arc-shaped axial section, the guide surface is continuously distributed around the center line of the turntable and is annular, one side of the guide surface extends toward the suction port, and the other side of the guide surface extends toward the blank ring, and the area between the upper surface of the blank ring and the guide surface is directly connected to the suction port.

2. A preform dust removal device according to claim 1, characterized in that: An air extraction hole is arranged on one side of the dust collecting box away from the rotating disk, and the width of the dust collecting cavity gradually decreases in the direction from the suction port to the air extraction hole.

3. A preform dust removal device according to claim 2, characterized in that: The arc of the suction port is α, which satisfies 90°<α<180°.

4. A preform dust removal device according to claim 1, characterized in that: The curvature of the guide surface is 90 degrees.

5. The bottle blank dust removal device according to claim 1, characterized in that: The blank clamping ring is provided with a plurality of clamping ports for clamping the bottle blanks, the guide ring is provided with through holes corresponding to the clamping ports one by one, and the air blowing pipe passes through the guide ring through the through holes to remove dust from the bottle blank clamped on the clamping ports.

6. A bottle blank dust removal device according to claim 1, characterized in that: The turntable includes a center disk with an annular positioning rib on the outer wall and a rotating shaft that drives the center disk to rotate. The guide ring and the blank clamping ring are sleeved on the outer circumference of the center disk and respectively abut against the upper and lower sides of the annular positioning rib. The guide ring and the blank clamping ring are fixedly connected to the center disk by bolts.

7. The bottle blank dust removal device according to claim 1, characterized in that: The dust removal assembly includes a lifting mechanism and a dust removal mechanism with an air blowing pipe, the lifting mechanism includes a three-dimensional cam arranged below the turntable and a lifting rod passed through the turntable, the top of the three-dimensional cam has a cam surface, the top of the lifting rod is connected to the dust removal mechanism, the bottom of the lifting rod is against the cam surface, and the lifting rod rotates with the turntable to drive the dust removal mechanism to move up and down under the push of the cam surface with changing height.

8. A bottle blank dust removal device according to claim 7, characterized in that: The lifting mechanism also includes a sleeve fixed on the turntable, the sleeve is inserted into the turntable, the lifting rod is inserted into the sleeve, and an elastic member located below the sleeve is sleeved outside the lifting rod. The elastic member is respectively abutted against the sleeve and the lifting rod to press the bottom of the lifting rod against the cam surface.

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