Bottle cap tightening mechanism

Abstract

The utility model discloses a bottle cap tightening mechanism. The bottle cap tightening mechanism further comprises a bottle cap screwing device. The bottle cap screwing device comprises a bottle cap guide plate and a friction plate; the bottle cap guide plate is provided with a guide groove, a groove opening of the guide groove faces downwards and is aligned with the bottle body conveying channel in a left-right centering mode, and the guide groove is located above the bottle body conveying channel. The rear end of the guide groove is an open end, the front end of the guide groove is a closed end, and the open end is backwards aligned to the bottle cap output end of the bottle cap conveying device; the groove wall of the closed end of the guide groove extends downwards; the friction plate is located in front of the guide groove. The bottom edge of the friction plate is downwards close to the bottle conveying channel. The groove wall face of the guide groove and the plate face of the friction plate are both parallel to the belt conveying face of the annular belt located on the bottle body conveying channel. The guide groove inputs bottle caps output from the bottle cap output end of the bottle cap conveying device. The friction plate rubs against the outer circumferential surface of the bottle cap moving in the bottle body conveying channel. The bottle cap can be prevented from deviating through the guide groove, the levelness of the bottle cap can be corrected, and the bottle cap can be rotated through the friction plate.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a bottle cap tightening mechanism. Background Art

[0002] After the Chinese patent medicine is concentrated and made into pill granules or capsules, it needs to be filled into medicine bottles according to a set quantity, and a bottle cap tightening mechanism is also required to tighten the bottle cap on the bottle mouth of the medicine bottle body.

[0003] The existing bottle cap tightening mechanism includes a bottle body conveying device, a bottle cap conveying device, a bottle cap tightening device and a conveyor belt. The bottle body conveying device includes two annular belts with opposite running directions. The two annular belts are respectively arranged above the conveyor belt along the running direction of the conveyor belt. The gap between the two annular belts forms a bottle body conveying channel. The bottle bodies are conveyed one by one through the conveyor belt and enter the bottle body conveying channel between the two annular belts. At the same time, the bottle cap conveying device outputs the bottle caps one by one above the input end of the bottle body channel, so that the bottle caps fall on the top of the bottle mouth of a bottle body. Then, the two annular belts clamp the bottle body and convey the bottle body along the bottle body conveying channel to the lower part of the bottle cap tightening device. The bottle cap tightening head in the bottle cap tightening device extends downward and clamps the bottle cap. Then, the bottle cap tightening head rotates and tightens the internal thread of the bottle cap on the external thread of the bottle mouth.

[0004] In the above process, when the bottle cap output by the bottle cap conveying device falls on the top of the bottle mouth of a bottle body, since the bottle cap cannot be aligned with the corresponding bottle mouth at the upper part of the bottle body, the bottle cap located at the top of the bottle mouth will be misaligned. As a result, when the bottle cap tightening head clamps the bottle cap, the clamping claws will collide with the bottle cap, causing the bottle cap to fall beside the bottle body, or the bottle cap clamped by the bottle cap tightening head will be in a skewed state, resulting in the phenomena of missing bottle caps, crooked bottle caps or un-tightened bottle caps in the medicine bottles output by the bottle cap tightening device, and reducing the qualified rate of the products output by the bottle cap tightening mechanism. Summary of the Utility Model

[0005] Aiming at the above deficiencies, the purpose of the utility model is to provide a bottle cap tightening mechanism to solve the problems that the bottle cap cannot be aligned with the corresponding bottle mouth and the qualified rate of the products output by the bottle cap tightening mechanism is low due to this.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A bottle cap tightening mechanism includes a bottle body conveying device, a bottle cap conveying device, a bottle cap tightening device, and a conveyor belt, which are respectively mounted above the machine table. The bottle body conveying device includes two annular belts with opposite running directions. The two annular belts are respectively arranged above the conveyor belt along the running direction of the conveyor belt. The gap between the two annular belts forms a bottle body conveying channel. The output port of the bottle cap conveying device is located above the bottle body conveying channel and close to the input end of the bottle body conveying channel. The bottle cap tightening device is located above the bottle body conveying channel and close to the output end of the bottle body conveying channel. It also includes a bottle cap screwing device arranged between the bottle cap conveying device and the bottle cap tightening device. The bottle cap screwing device includes a bottle cap guiding plate and a friction plate.

[0008] The bottle cap guiding plate is provided with a guiding groove. The notch of the guiding groove faces downward and is centered left and right opposite the bottle body conveying channel. The guiding groove is located above the bottle body conveying channel. The rear end of the guiding groove is an open end, and the front end of the guiding groove is a closed end. The open end faces backward opposite the bottle cap output end of the bottle cap conveying device. The groove wall of the closed end of the guiding groove extends downward. The friction plate is located in front of the guiding groove, and the bottom edge of the friction plate faces downward close to the bottle body conveying channel. The groove wall surface of the guiding groove and the plate surface of the friction plate are both parallel to the belt conveying surface of the annular belt located in the bottle body conveying channel.

[0009] The guiding groove is used to input the bottle caps output from the bottle cap output end of the bottle cap conveying device. The friction plate is used to friction with the outer peripheral surface of the bottle cap moving in the bottle body conveying channel.

[0010] Further, the bottle cap guiding plate further includes an extension plate.

[0011] The extension plate extends in the horizontal direction. The rear end of the extension plate is connected to the bottom edge of the front end of the guiding groove. The front end of the extension plate extends forward along the bottle body conveying channel.

[0012] The front end of the friction plate is flush with the front end of the extension plate, and the rear end of the friction plate is located in front of the rear end of the extension plate.

[0013] Further, the bottle cap guiding plate further includes a guiding inclined plate.

[0014] The bottom edge of the guiding inclined plate is connected to the rear side of the guiding groove located at the open end. The plate surface of the guiding inclined plate extends backward and upward.

[0015] Preferably, the plate surface of the guiding inclined plate is an arc-shaped plate surface extending backward and upward.

[0016] Further, the bottle cap screwing device 5 further includes a lifter 54.

[0017] The lifter is mounted above the bottle conveying channel, the output end of the lifter faces downward, and the top surface of the bottle cap guiding plate is connected to the output end of the lifter.

[0018] Furthermore, the bottle cap screwing device further includes a mounting frame;

[0019] The friction plate is further provided with a connecting piece; one side of the connecting piece is connected to the middle of the top edge of the friction plate, and the other side of the connecting piece extends horizontally away from the bottle conveying channel;

[0020] The mounting frame is mounted above the machine table, the top surface of the mounting frame is above the top surface of the bottle conveying channel, and the connecting piece is fixed to the top surface of the mounting frame by a fastener.

[0021] Furthermore, the connecting piece is provided with at least two opening slots;

[0022] The opening slots penetrate the connecting piece from top to bottom. One end of the opening slot is close to the top edge of the friction plate, and the other end of the opening slot extends outward in a direction perpendicular to the extending direction of the bottle conveying channel. The connecting piece is fixed to the mounting frame by a fastener inserted into the opening slot.

[0023] Furthermore, an adjusting screw is installed in the middle of the mounting frame;

[0024] The adjusting screw is used to adjust the mounting height of the mounting frame relative to the top surface of the bottle conveying channel.

[0025] Preferably, the horizontal center line of the bottle conveying channel and the horizontal center line of the guiding slot are located in the same plane perpendicular to the conveyor belt.

[0026] The technical solution of a bottle cap tightening mechanism proposed by the present utility model has the beneficial effects that: the left and right movement of the bottle cap can be restricted by the two side walls of the guiding slot to prevent the bottle cap from being displaced, and the flatness of the top surface of the bottle cap can be corrected by the bottom surface of the rear wall of the guiding slot. Then, the bottle cap is rotated by friction through the friction plate, and the internal thread of the bottle cap is screwed into the external thread of the bottle mouth of the corresponding bottle body, which can improve the qualified rate of the products output by the bottle cap tightening mechanism and can improve the production efficiency of the bottle cap tightening mechanism. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of an embodiment of a bottle cap tightening mechanism of the present utility model;

[0028] Figure 2 is Figure 1 an enlarged view of part A of

[0029] Wherein: machine platform 1; bottle body conveying device 2; bottle cap conveying device 3; bottle cap tightening device 4; bottle cap screwing device 5; conveyor belt 10; bottle cap output end 31; annular belt 21; bottle cap tightening head 41; mounting frame 51; bottle cap 60; bottle body 61; bottle cap guiding plate 52; friction plate 53; lifter 54; bottle body conveying channel 210; adjusting screw 511; guiding groove 521; extension plate 522; connecting piece 531; open end 5211; guiding inclined plate 5212; open slot 5311. Detailed implementation manner

[0030] The following combines the attached Figure 1-2 And further illustrates the technical solution of the present utility model through specific implementation manners.

[0031] The attached drawings are only for illustrative purposes and cannot be construed as a limitation to this patent; in order to better illustrate this embodiment, some components in the attached drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation" and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be said that the interiors of two components are in communication. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] A bottle cap tightening mechanism includes a bottle body conveying device 2, a bottle cap conveying device 3, a bottle cap tightening device 4 and a conveyor belt 10 respectively mounted above the machine platform 1. The bottle body conveying device 2 includes two annular belts 21 running in opposite directions. The two annular belts 21 are respectively arranged above the conveyor belt 10 along the running direction of the conveyor belt 10. The gap between the two annular belts 21 forms a bottle body conveying channel 210; the output port of the bottle cap conveying device 3 is located above the bottle body conveying channel 210 and close to the input end of the bottle body conveying channel 210; the bottle cap tightening device 4 is located above the bottle body conveying channel 210 and close to the output end of the bottle body conveying channel 210, and further includes a bottle cap screwing device 5 arranged between the bottle cap conveying device 3 and the bottle cap tightening device 4; the bottle cap screwing device 5 includes a bottle cap guiding plate 52 and a friction plate 53;

[0034] The bottle cap guiding plate 52 is provided with a guiding groove 521. The notch of the guiding groove 521 faces downward and is centered left and right to align with the bottle body conveying channel 210. The guiding groove 521 is located above the bottle body conveying channel 210. The rear end of the guiding groove 521 is an open end 5211, and the front end of the guiding groove 521 is a closed end. The open end 5211 faces backward and aligns with the bottle cap output end 31 of the bottle cap conveying device 3. The groove wall of the closed end of the guiding groove 521 extends downward. The friction plate 53 is located in front of the guiding groove 521, and the bottom edge of the friction plate 53 moves downward and approaches the bottle body conveying channel 210. The wall surface of the groove wall of the guiding groove 521 and the plate surface of the friction plate 53 are both parallel to the belt conveying surface of the endless belt 21 located in the bottle body conveying channel 210.

[0035] The guiding groove 521 is used to input the bottle caps 60 output from the bottle cap output end 31 of the bottle cap conveying device 3. The friction plate 53 is used to friction with the outer peripheral surface of the bottle cap 60 moving in the bottle body conveying channel 210.

[0036] Figure 1 It is a schematic structural diagram of an embodiment of a bottle cap tightening mechanism of the present invention. Figure 2 is Figure 1 an enlarged view of part A of Figure 2 showing the installation structure of the bottle cap screwing device 5. Figure 1 In [the figure], the conveyor belt 10 runs from back to front, and the mouth part of the bottle body 61 located in the bottle body conveying channel 210 is exposed upward outside the top surfaces of the two endless belts 21. The bottle cap tightening device 4 includes a plurality of bottle cap tightening heads 41, and the bottle cap tightening heads 41 are provided with clamping jaws for clamping the bottle caps 60.

[0037] Such as Figure 1-2As shown, the bottle caps 60 are output one by one from the bottle cap output end 31 of the bottle cap conveying device 3 and enter the open end 5211 of the guiding groove 521. At the same time, the bottle bodies 61 are conveyed one by one through the conveyor belt 10 and enter the bottle body conveying channel 210 between the two endless belts 21. The two sides of the bottle body 61 are respectively abutted against the two belt conveying surfaces of the two endless belts 21 located on both sides of the bottle body conveying channel 210. When a bottle body 61 reaches below the guiding groove 521, a corresponding bottle cap 60 falls onto the top of the bottle mouth of the bottle body 61 through the guiding groove 521. The two side walls of the guiding groove 521 can limit the left - right movement of the bottle cap 60 and prevent the bottle cap 60 from being displaced. The bottom surface of the rear wall of the guiding groove 521 can correct the levelness of the top surface of the bottle cap 60. During the process that the bottle body 61 continues to move along the bottle body conveying channel 210 under the clamping and driving of the two endless belts 21, the friction plate 53 rubs against the outer peripheral surface of each passing bottle cap 60, causing the bottle cap 60 to rotate and screwing the internal thread of the bottle cap 60 into the external thread of the corresponding bottle mouth of the bottle body 61. When the bottle body 61 reaches below the bottle cap tightening device 4, the bottle cap tightening head 41 in the bottle cap tightening device 4 extends downward to clamp the bottle cap with claws, and then the bottle cap tightening head 411 rotates the claws and tightens the internal thread of the bottle cap 60 onto the external thread of the bottle mouth.

[0038] Further, the bottle cap guiding plate 52 further includes an extension plate 522;

[0039] The extension plate 522 extends in the horizontal direction. The rear end of the extension plate 522 is connected to the front bottom edge of the guiding groove 521, and the front end of the extension plate 522 extends forward along the bottle body conveying channel 210;

[0040] The front end of the friction plate 53 is flush with the front end of the extension plate 522, and the rear end of the friction plate 53 is located in front of the rear end of the extension plate 522.

[0041] As Figure 2 shown, before the friction plate 53 comes into frictional contact with the side surface of the bottle cap 60, the rear part of the extension plate 522 blocks the upward movement of the top surface of the bottle cap 60 and corrects the levelness of the top surface of the bottle cap 60, thereby improving the effectiveness of screwing the bottle cap 60 into the thread on the outer peripheral surface of the corresponding bottle mouth of the bottle body 61 during rotation.

[0042] Further, the bottle cap guiding plate 52 further includes a guiding inclined plate 5212;

[0043] The bottom edge of the guiding inclined plate 5212 is connected to the rear side of the guiding groove 521 at the open end 5211, and the plate surface of the guiding inclined plate 5212 extends backward and upward.

[0044] As Figure 1 and Figure 2As shown in the figure, before the bottle cap 60 output from the bottle cap output end 31 of the bottle cap conveying device 3 enters the opening end 5211 of the guiding groove 521, the front top of the bottle cap 60 contacts the plate surface of the guiding inclined plate 5212 extending backward and upward. The bottle cap 60 enters the guiding groove 521 along the guidance of the guiding inclined plate 5212. After entering the guiding groove 521, the front end of the bottle cap 60 inclines downward, so that the bottom of the front end of the bottle cap 60 contacts the outer peripheral surface of the front top of the bottle mouth of the bottle body 61 passing by from the front and below. When the corresponding bottle body 61 continues to move forward, it drives the bottle cap 60 to move, and makes the bottle cap 60 accurately set on the bottle mouth top of the bottle body 61. Then, the horizontal degree of the bottle cap 60 located on the bottle mouth top is corrected by the rear end part of the extension plate 522, so that the inclined bottle cap top surface is restored to a horizontal plane. Then, the bottle cap 60 is rotated by the friction plate 53, so that the effectiveness of screwing the internal thread of the bottle cap 60 into the external thread of the bottle mouth of the corresponding bottle body 61 can be further improved.

[0045] Preferably, the plate surface of the guiding inclined plate 5212 is an arc-shaped plate surface extending backward and upward.

[0046] Most of the top edges of the bottle caps 60 of medicine bottles have arc-shaped chamfers. The setting that the plate surface of the guiding inclined plate 5212 is an arc-shaped plate surface extending backward and upward can improve the smoothness of the guiding inclined plate 5212 to incline and guide the bottle cap 60 into the guiding groove 521.

[0047] Further, the bottle cap screwing device 5 further includes a lifter 54;

[0048] The lifter 54 is hung above the bottle body conveying channel 210. The output end of the lifter 54 faces downward, and the top surface of the bottle cap guiding plate 52 is connected to the output end of the lifter 54.

[0049] As Figure 2 shown, the position of the bottom surface of the guiding groove 521 relative to the output surface of the output bottle cap 60 of the bottle cap conveying device 3 can be adjusted by the lifter 54, so that the bottle cap guiding plate 52 can adapt to the production requirements of bottle caps 60 of different heights.

[0050] Further, the bottle cap screwing device 5 further includes a mounting frame 51;

[0051] The friction plate 53 is further provided with a connecting piece 531; one side of the connecting piece 531 is connected to the middle of the top edge of the friction plate 53, and the other side of the connecting piece 531 extends horizontally in a direction away from the bottle body conveying channel 210;

[0052] The mounting frame 51 is mounted above the machine table 1. The top surface of the mounting frame 51 is located above the top surface of the bottle body conveying channel 210. The connecting piece 531 is fixed to the top surface of the mounting frame 51 through fasteners.

[0053] As Figure 1-2 shown, the friction plate 53 is fixed to the mounting bracket 51 through the connecting piece 531, so that the friction plate 53 has better mounting stability, and the effectiveness of the frictional contact between the friction plate 53 and the outer peripheral surface of the bottle cap 60 can be improved.

[0054] Furthermore, at least two opening grooves 5311 are provided on the connecting piece 531;

[0055] The opening grooves 5311 penetrate through the connecting piece 531 from top to bottom. One end of the opening groove 5311 is close to the top edge of the friction plate 53, and the other end of the opening groove 5311 extends outward in a direction perpendicular to the extending direction of the bottle body conveying channel 210. The connecting piece 531 is fixed to the mounting bracket 51 through a fastener inserted into the opening groove 5311.

[0056] As Figure 2 shown, by adjusting the position of the fastener in the corresponding opening groove 5311, the distance between the plate surface of the friction plate 53 and the side surface of the bottle body conveying channel 210 can be adjusted, so as to adapt to the production requirements of bottle caps 60 with different diameters.

[0057] Furthermore, an adjusting screw 511 is installed in the middle of the mounting bracket 51;

[0058] The adjusting screw 511 is used to adjust the mounting height of the mounting bracket 51 relative to the top surface of the bottle body conveying channel 210.

[0059] As Figure 2 shown, by turning the adjusting screw 511 to adjust the distance between the top surface of the mounting bracket 51 and the top surface of the bottle body conveying channel 210, the distance between the bottom edge of the friction plate 53 and the top surface of the bottle body conveying channel 210 can be adjusted.

[0060] Preferably, the horizontal center line of the bottle body conveying channel 210 and the horizontal center line of the guiding groove 521 are located in the same plane perpendicular to the conveyor belt 10.

[0061] In this way, the accuracy of aligning the bottle cap 60 with the mouth of the bottle body 61 can be improved, the phenomenon of the bottle cap 60 being skewed can be reduced, and further the product quality output by the bottle cap tightening mechanism can be improved.

[0062] To sum up, as Figure 1-2In the embodiment of the utility model shown, the bottle cap tightening mechanism limits the left and right movement of the bottle cap 60 by the groove walls on both sides of the guide groove 521 to prevent the bottle cap 60 from being offset, and corrects the horizontality of the top surface of the bottle cap 60 by the bottom surface of the groove wall at the rear end of the guide groove 521, and then rotates the bottle cap 60 by friction through the friction plate 53, and makes the internal thread of the bottle cap 60 screwed into the corresponding external thread of the bottle mouth of the bottle body 61, which can improve the qualified rate of the products output by the bottle cap tightening mechanism and improve the production efficiency of the bottle cap tightening mechanism.

[0063] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A bottle cap tightening mechanism, comprising a bottle body conveying device, a bottle cap conveying device, a bottle cap tightening device and a conveyor belt, which are respectively mounted above the machine table. The bottle body conveying device includes two annular belts with opposite running directions. The two annular belts are respectively arranged above the conveyor belt along the running direction of the conveyor belt, and the gap between the two annular belts forms a bottle body conveying channel. The output port of the bottle cap conveying device is located above the bottle body conveying channel and close to the input end of the bottle body conveying channel. The bottle cap tightening device is located above the bottle body conveying channel and close to the output end of the bottle body conveying channel, and is characterized in that, It further includes a cap screwing device disposed between the cap conveying device and the cap tightening device; the cap screwing device includes a cap guiding plate and a friction plate; The cap guiding plate is provided with a guiding groove, the notch of the guiding groove faces downward and is centered left and right to align with the bottle body conveying channel, and the guiding groove is located above the bottle body conveying channel; the rear end of the guiding groove is an open end, and the front end of the guiding groove is a closed end; the open end faces backward to align with the cap output end of the cap conveying device; the groove wall of the closed end of the guiding groove extends downward; the friction plate is located in front of the guiding groove, and the bottom edge of the friction plate approaches the bottle body conveying channel downward; the groove wall surface of the guiding groove and the plate surface of the friction plate are both parallel to the belt conveying surface of the annular belt located in the bottle body conveying channel; The guiding groove is used for inputting the caps output from the cap output end of the cap conveying device; the friction plate is used for friction with the outer peripheral surface of the cap moving in the bottle body conveying channel.

2. The bottle cap tightening mechanism according to claim 1, characterized in that, The cap guiding plate further includes an extension plate; The extension plate extends in the horizontal direction, the rear end of the extension plate is connected to the bottom edge of the front end of the guiding groove, and the front end of the extension plate extends forward along the bottle body conveying channel; The front end of the friction plate is flush with the front end of the extension plate, and the rear end of the friction plate is located in front of the rear end of the extension plate.

3. The bottle cap tightening mechanism according to claim 2, characterized in that, The cap guiding plate further includes a guiding inclined plate; The bottom edge of the guiding inclined plate is connected to the rear side of the guiding groove located at the open end, and the plate surface of the guiding inclined plate extends backward and upward.

4. The bottle cap tightening mechanism according to claim 3, characterized in that, The plate surface of the guiding inclined plate is an arc-shaped plate surface extending backward and upward.

5. The bottle cap tightening mechanism according to claim 1, wherein The cap screwing device further includes a lifter; The lifter is hung above the bottle body conveying channel, the output end of the lifter faces downward, and the top surface of the cap guiding plate is connected to the output end of the lifter.

6. The bottle cap tightening mechanism according to claim 1, characterized in that, The cap screwing device further includes a mounting frame; The friction plate is further provided with a connecting piece; one side of the connecting piece is connected to the middle of the top edge of the friction plate, and the other side of the connecting piece extends horizontally away from the bottle body conveying channel; The mounting frame is mounted above the machine table, the top surface of the mounting frame is located above the top surface of the bottle body conveying channel, and the connecting piece is fixed to the top surface of the mounting frame through a fastener.

7. The bottle cap tightening mechanism according to claim 6, characterized in that, The connecting piece is provided with at least two open slots; The open slots penetrate the connecting piece from top to bottom, one end of the open slot is close to the top edge of the friction plate, and the other end of the open slot extends outward in a direction perpendicular to the extending direction of the bottle body conveying channel. The connecting piece is fixed to the mounting frame by inserting a fastener into the open slot.

8. The bottle cap tightening mechanism according to claim 6, wherein, An adjusting screw is installed in the middle of the mounting frame; The adjusting screw is used to adjust the mounting height of the mounting frame relative to the top surface of the bottle body conveying channel.

9. The bottle cap tightening mechanism according to claim 1, wherein The horizontal center line of the bottle body conveying channel and the horizontal center line of the guiding groove are located in the same plane perpendicular to the conveyor belt.

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