A counting device for ring cutting of plastic bottle caps

Abstract

The present invention relates to the technical field of counting devices, and in particular to a counting device for ring cutting of plastic bottle caps, comprising a box, a counter and a buzzer, wherein the counter is mounted at the bottom of the inner cavity of the box, the buzzer is mounted on the front of the box, and the counter is electrically connected to the buzzer, and the counting device for ring cutting of plastic bottle caps also comprises a support plate, a discharge hole, a discharge trough, a ring cutting mechanism, a counting mechanism, a sleeve, a motor, a first rotating shaft, a turntable, a disc, a limit groove, a lifting mechanism and a baffle, wherein the support plate is fixedly connected to the upper surface of the box; the discharge hole is opened on the right side of the upper surface of the support plate; the discharge trough is installed on the front of the box in a downward tilt from back to front, and the discharge trough is located directly below the discharge hole. It is suitable for cutting rings of plastic bottle caps of different specifications, expanding the processing categories, and having a ring cutting knife service life monitoring function, so that the ring cutting knife can be replaced in time to prevent the ring cutting knife from delaying replacement and reducing the ring cutting quality.

Description

Technical Field

[0001] The invention relates to the technical field of counting devices, in particular to a counting device for ring cutting of plastic bottle caps. Background Art

[0002] In the production and processing of plastic bottle caps, in order to achieve anti-counterfeiting and sealing functions, it is usually necessary to perform ring cutting on the bottle caps, that is, to cut anti-theft rings on the bottle caps. The existing bottle cap ring cutting equipment exposes some problems during use. First, the existing ring cutting device usually lacks an accurate counting function and cannot accurately count the number of bottle caps that have completed the ring cutting process. This brings inconvenience to production management and cannot effectively control production progress and product quality. Secondly, due to the differences in size and shape of bottle caps of different specifications, the height and position adjustment of the ring cutting knife in the existing equipment is not convenient and accurate enough when cutting the ring, and it cannot adapt to the processing requirements of bottle caps of different specifications, resulting in unstable ring cutting quality and affecting the qualified rate of the product. In addition, the ring cutting knife will wear out during long-term use. If the wear degree of the knife cannot be monitored and replaced in time, it will affect the effect of the ring cutting, and may even damage the bottle cap, resulting in material waste and economic losses. However, the existing ring cutting equipment usually lacks a means to monitor the wear degree of the ring cutting knife, and cannot remind the operator to perform maintenance and replacement in time. Therefore, there is an urgent need for an improved plastic bottle cap ring cutting counting device that can accurately count, conveniently adjust the height of the ring cutting knife to adapt to bottle caps of different specifications, and monitor the wear degree of the ring cutting knife in real time, and promptly remind to replace the knife, so as to improve production efficiency, ensure product quality, and reduce production costs. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art that plastic bottle cap ring cutting of various specifications cannot be achieved, the ring cutting knife cannot be replaced in time, and the ring cutting quality is affected, the present invention provides a counting device for plastic bottle cap ring cutting.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a counting device for ring cutting of plastic bottle caps, comprising a box body, a counter and a buzzer, wherein the counter is installed at the bottom of the inner cavity of the box body, the buzzer is installed at the front of the box body, and the counter is electrically connected to the buzzer, and the counting device for ring cutting of plastic bottle caps also includes a support plate, a discharge hole, a discharge trough, a ring cutting mechanism and a counting mechanism; the support plate is fixedly connected to the upper surface of the box body; the discharge hole is opened on the right side of the upper surface of the support plate; the discharge trough is installed on the front side of the box body with a downward inclination from back to front, and the discharge trough is located directly below the discharge hole; the ring cutting mechanism and the counting mechanism are both installed on the front side of the upper surface of the support plate.

[0005] Optionally, the counting mechanism includes a box body, a guide rod, teeth, a squeezing ball, a spur gear, a rocker arm, a tension spring, a first contact and a second contact, the box body being embedded in the front side of the upper surface of the support plate, and the box body being located in front of the ring cutting knife; the guide rod being slidable up and down and plugged into the left side of the bottom of the box body; the number of teeth is several, which are installed on the right side wall of the guide rod from top to bottom; the squeezing ball is installed on the top of the guide rod, and the squeezing ball extends out of the upper surface of the box body; the spur gear is installed in the middle of the inner cavity of the box body so as to be rotatable around its own axis through a pin shaft, and the spur gear is meshingly connected with the teeth; the rocker arm is laterally installed on the outer wall of the spur gear; one end of the tension spring is installed on the right end of the lower surface of the rocker arm, and the other end of the tension spring is installed on the bottom of the inner cavity of the box body, and the rocker arm is pulled down under the tension of the tension spring; the first contact is installed on the right end of the upper surface of the rocker arm, and the first contact is externally connected to a power supply; the second contact is installed on the top of the right inner wall of the box body, and the second contact is electrically connected to the counter.

[0006] Optionally, the counting device for ring cutting of plastic bottle caps also includes a sleeve, a motor, a first rotating shaft, a turntable, a disc, a limiting groove, a lifting mechanism and a baffle; the sleeve is vertically installed at the center position of the support plate; the motor is installed on the lower surface of the support plate; the first rotating shaft is installed on the inner wall of the sleeve through a bearing so as to be able to rotate around its own axis, and the bottom of the first rotating shaft is connected to the output end of the motor through a coupling; the turntable is installed on the top of the first rotating shaft, and the turntable rotates under the drive of the motor; the disc is fixedly connected to the outer wall of the sleeve; the limiting grooves are connected end to end and are opened on the side wall of the disc; the number of lifting mechanisms is several, which are vertically installed on the outer edge of the upper surface of the turntable along the circumferential direction; the baffle is installed on the upper surface of the support plate, and the baffle is located close to the discharge hole, and the movement direction of the plastic bottle cap is constrained by the baffle.

[0007] Optionally, the left and right sides of the limiting groove are inclined surfaces, and there is a height difference between the front and rear sides.

[0008] Optionally, the switching mechanism includes a transmission box, a screw, an outer rod, an arc plate, a ring cutting knife, a first bevel gear, a positioning blind hole, a second rotating shaft, a second bevel gear, a driving rod, a handle and an insertion rod, the transmission box is fixedly connected to the bottom of the inner cavity of the box; there are two screws, both of which are installed on the left and right sides of the upper surface of the transmission box so as to be rotatable around their own axes through bearings; the outer rod is screwed to the outer wall of the screw; the arc plate is installed at the top of the outer rod; the ring cutting knife is installed on the upper surface of the arc plate, and when the screw rotates clockwise or counterclockwise, the rotational force of the screw thread can drive the outer The rod drives the ring cutting knife to rise or fall; the first bevel gear is installed at the bottom end of the screw; there are several positioning blind holes, which are equidistantly arranged at the front center of the transmission box along the circumferential direction; the second rotating shaft is installed at the front center of the transmission box so as to be able to rotate around its own axis through a bearing; the second bevel gear is installed at the rear end of the second rotating shaft, and the second bevel gear is meshed and connected with the first bevel gear; the driving rod is installed at the front end of the second rotating shaft through a pin shaft; the handle and the insertion rod are respectively installed at the top of the front and rear sides of the driving rod, and the insertion rod is inserted into the inner cavity of the positioning blind hole to position the driving rod.

[0009] Optionally, a transmission ratio between the first bevel gear and the second bevel gear is less than 1.

[0010] Optionally, the insertion rod is rhombus-shaped and made of elastic material.

[0011] Optionally, the maximum distance that the extrusion ball extends out of the upper surface of the box body is less than its own radius.

[0012] Optionally, the lifting mechanism includes a limit rod, a lifting column, a first roller and a second roller, the limit rod is vertically installed on the upper surface of the turntable; the lifting column is slidably sleeved on the outer wall of the limit rod; the first roller is installed on the top of the outer wall of the lifting column, and the first roller is inserted into the inner cavity of the limit groove; the second roller is installed on the bottom end of the lifting column.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention drives the second rotating shaft to rotate through the driving rod, and allows the screw to rotate clockwise or counterclockwise under the transmission condition of the first bevel gear and the second bevel gear. The screw thread rotation force can drive the outer rod to drive the ring cutting knife to rise or fall, and the insertion rod is inserted into the positioning blind hole at the corresponding position, and the second rotating shaft after rotation is braked to complete the height adjustment of the ring cutting knife. It is suitable for cutting rings of plastic bottle caps of different specifications and expands the processing categories.

[0014] 2. The present invention squeezes the squeezing ball downward through the plastic bottle cap, and the pendulum swings upward under the condition of gear transmission. The first contact point contacts the second contact point, and the counter receives the electrical signal and counts. When the squeezing ball is not affected by external force, the tension of the tension spring pulls the pendulum bar down, and the squeezing ball rises back to the initial position. Each plastic bottle cap that cuts the ring will touch the squeezing ball, which not only counts the plastic bottle caps that can cut the ring, but also calculates the degree of wear of the ring cutting knife. Until the count value of the counter reaches the set value, the buzzer alarms. Therefore, it has the function of monitoring the service life of the ring cutting knife, so that the ring cutting knife can be replaced in time to prevent the ring cutting knife from being delayed in replacement and reducing the quality of the ring cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention.

[0016] Figure 2 It is a front cross-sectional view of the present invention.

[0017] Figure 3 It is a schematic diagram of the disc structure of the present invention.

[0018] Figure 4 It is a schematic diagram of the structure of the ring cutting mechanism of the present invention.

[0019] Figure 5 It is a left side cross-sectional view of the ring cutting mechanism of the present invention.

[0020] Figure 6 It is a schematic diagram of the rod insertion structure of the present invention.

[0021] Figure 7 It is a front cross-sectional view of the counting mechanism of the present invention.

[0022] Figure 8 It is a front cross-sectional view of the lifting mechanism of the present invention.

[0023] In the figure: 1, box; 2, counter; 3, buzzer; 4, support plate; 5, discharge hole; 6, discharge slot; 7, ring cutting mechanism; 8, counting mechanism; 9, sleeve; 10, motor; 11, first rotating shaft; 12, turntable; 13, disc; 14, limit slot; 15, lifting mechanism; 16, baffle; 71, transmission box; 72, screw; 73, outer rod; 74, arc plate; 75, ring cutting knife; 76, first cone Gear; 77, positioning blind hole; 78, second rotating shaft; 79, second bevel gear; 710, driving rod; 711, handle; 712, plug rod; 81, box body; 82, guide rod; 83, teeth; 84, squeezing ball; 85, spur gear; 86, rocker rod; 87, tension spring; 88, first contact; 89, second contact; 151, limit rod; 152, lifting column; 153, first roller; 154, second roller. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The present invention provides a technical solution: a counting device for plastic bottle cap ring cutting, such as Figure 1-Figure 8 As shown, it includes a box body 1, a counter 2 and a buzzer 3. The counter 2 is installed at the bottom of the inner cavity of the box body 1, and the buzzer 3 is installed on the front of the box body 1. The counter 2 is electrically connected to the buzzer 3. When the counter 2 reaches the set value, the counter 2 controls the buzzer 3 to sound an alarm. A support plate 4 is fixedly connected to the top of the box body 1. A discharge hole 5 is opened at the right end of the upper surface of the support plate 4. The discharge hole 5 allows the plastic bottle caps to fall. A downwardly inclined discharge trough 6 is installed on the front of the box body 1 to allow the plastic bottle caps to be discharged along the discharge trough 6. A ring cutting mechanism 7 and a counting mechanism 8 are respectively installed on the front side of the upper surface of the support plate 4. A sleeve 9 is fixedly connected to the center position of the support plate 4. A motor 10 is installed on the lower surface of the support plate 4. A first rotating shaft 11 that can rotate around its own axis is installed on the inner wall of the sleeve 9 through a bearing. The bottom end of the first rotating shaft 11 is connected to the output end of the motor 10. The first rotating shaft 11 is connected through a coupling, and a turntable 12 is installed on the top of the first rotating shaft 11. The turntable 12 can be rotated under the drive of the motor 10. A disc 13 is fixedly connected to the top of the outer wall of the sleeve 9. A limiting groove 14 is provided on the side wall of the disc 13. The left and right sides of the limiting groove 14 are inclined surfaces, and there is a height difference between the front and rear sides. A plurality of lifting mechanisms 15 are equidistantly installed along the circumferential direction on the outer edge of the upper surface of the turntable 12. The inner side of the lifting mechanism 15 is inserted into the inner cavity of the limiting groove 14. When the turntable 12 drives the lifting mechanism 15 to rotate, the inclined surface of the limiting groove 14 can change the height of the lifting mechanism 15. The height of the lifting mechanism 15 is changed by the limiting groove 14, so that the lifting mechanism 15 drives the plastic bottle cap to move. A baffle 16 is installed on the upper surface of the support plate 4 near the discharge hole 5. The plastic bottle cap is blocked by the baffle 16 so that the plastic bottle cap after ring cutting can fall into the discharge hole 5.

[0026] As a preferred solution, further, the ring cutting mechanism 7 includes a transmission box 71 fixedly connected to the bottom of the inner cavity of the box body 1, and screws 72 that can rotate around their own axes are installed on the left and right sides of the upper surface of the transmission box 71 through bearings. The outer wall of the screw 72 is screwed with an outer rod 73, and an arc plate 74 is installed on the top of the outer rod 73. The arc plate 74 extends out of the upper surface of the support plate 4, and a ring cutting knife 75 is installed on the upper surface of the arc plate 74. The curved surface of the arc plate 74 limits the movement of the plastic bottle cap, and then the ring cutting knife 75 accurately cuts the plastic bottle cap, and a first bevel gear 76 is installed at the bottom end of the screw 72. A plurality of positioning blind holes 77 are equidistantly provided at the front center of the transmission box 71 along the circumferential direction. The second rotating shaft 78 rotates along its own axis, and a second bevel gear 79 meshing with the first bevel gear 76 is installed on the rear side of the second rotating shaft 78, and the transmission ratio is less than 1, so as to reduce the angular velocity of the first bevel gear 76 and fine-tune the lifting and lowering of the outer rod 73, thereby changing the cutting height of the ring cutting knife 75. A driving rod 710 is installed at the front end of the second rotating shaft 78 through a pin shaft, and a handle 711 and an insertion rod 712 are respectively installed on the top of the front and rear sides of the driving rod 710. The insertion rod 712 is inserted into the inner cavity of the positioning blind hole 77 to position the driving rod 710. The insertion rod 712 is rhombus-shaped and made of elastic material. The inclined surface of the insertion rod 712 can be inserted into the positioning blind hole 77 and expanded in the positioning blind hole 77 to prevent the insertion rod 712 from escaping from the positioning blind hole 77.

[0027] As a preferred solution, further, a box body 81 is embedded in the upper surface of the support plate 4, and the box body 81 is located in front of the ring cutting knife 75. A guide rod 82 that can slide up and down is inserted on the left side of the lower surface of the box body 81. A plurality of teeth 83 are installed on the right side wall of the guide rod 82 from top to bottom. A squeezing ball 84 is installed on the top of the guide rod 82. The maximum distance that the squeezing ball 84 extends out of the upper surface of the box body 81 is less than its own radius, so as to prevent the squeezing ball 84 from escaping from the inner cavity of the box body 81. When the plastic bottle cap passes through the squeezing ball 84, it can push the squeezing ball 84 to move downward. The middle part of the inner cavity of the box body 81 is installed by a pin shaft. There is a spur gear 85 meshing with the tooth 83, and a rocker arm 86 is installed horizontally on the outer wall of the spur gear 85. One end of a tension spring 87 is installed on the right end of the lower surface of the rocker arm 86, and the other end of the tension spring 87 is installed on the bottom of the inner cavity of the box body 81. Under the tension of the tension spring 87, the rocker arm 86 is pulled to swing downward. A first contact 88 is installed on the right end of the upper surface of the rocker arm 86, and the first contact 88 is externally connected to a power supply. A second contact 89 electrically connected to the counter 2 is installed on the top of the right inner wall of the box body 81. When the first contact 88 and the second contact 89 are closed, an electrical signal is sent to the counter 2, and the counter 2 counts.

[0028] As a preferred solution, further, the lifting mechanism 15 includes a limiting rod 151 vertically installed on the top of the turntable 12, and the outer wall of the limiting rod 151 is sleeved with a lifting column 152 that can slide up and down. The outer wall of the limiting rod 151 is a regular polygon to prevent the lifting column 152 from rotating. A first roller 153 that is plugged into the inner cavity of the limiting groove 14 is installed on the top of the outer wall of the lifting column 152. When the first roller 153 rolls in the limiting groove 14, the height change of the limiting groove 14 is used to make the lifting column 152 rise and fall. A second roller 154 is installed at the bottom of the lifting column 152. When the second roller 154 is inserted into the plastic bottle cap, it can drive the plastic bottle cap to move.

[0029] Working principle: Step 1: The plastic bottle caps are sent to the support plate 4 by the cap sorter, the motor 10 drives the first rotating shaft 11 to drive the turntable 12 to rotate counterclockwise, and the first roller 153 rolls in the limiting groove 14. When the first roller 153 rolls to the left inclined surface of the limiting groove 14, the lifting column 152 descends, and the second roller 154 enters the plastic bottle caps. The second roller 154 drives the plastic bottle caps to move outside the ring cutting knife 75, and the ring cutting knife 75 cuts the plastic bottle caps. When the first roller 153 moves to the right inclined surface of the limiting groove 14, the lifting column 152 drives the second roller 154 to rise, and the second roller 154 withdraws from the plastic bottle caps. Under the obstruction of the baffle 16, the plastic bottle caps fall from the discharge hole 5, and the plastic bottle cap ring cutting operation is completed; Step 2: When the height of the plastic bottle cap cutting ring needs to be changed, the handle 711 is pulled forward to move the insertion rod 712 out of the positioning blind hole 77, driving the second rotating shaft 78 to drive the second bevel gear 79 to rotate, and the screw 72 is driven clockwise or counterclockwise by the second bevel gear 79 and the first bevel gear 76. The thread rotation force of the screw 72 drives the arc plate 74 to rise or fall until the height of the ring cutting knife 75 meets the ring cutting requirement, and the insertion rod 712 is pushed to insert into the positioning blind hole 77 at the corresponding position, and the second rotating shaft 78 is braked. Therefore, it is possible to cut rings for plastic bottle caps of different specifications; Step three, when it is necessary to count the degree of wear of the ring cutting knife 75, when the plastic bottle cap passes through the counting mechanism 8, the plastic bottle cap squeezes the squeezing ball 84, causing the guide rod 82 to move downward, and the swing rod 86 swings upward under the transmission of the teeth 83 and the spur gear 85, and the first contact 88 contacts the second contact 89. At the same time, the tension spring 87 is stretched and sends an electrical signal to the counter 2. The counter 2 counts, and when the plastic bottle cap is separated from the squeezing ball 84, the tension of the tension spring 87 pulls the swing rod 86 down, and the squeezing ball 84 rises back to the initial position under the transmission condition of the spur gear 85 and the teeth 83. Not only the plastic bottle caps that can cut the ring are counted, but also the degree of wear of the ring cutting knife can be calculated. When the count of the counter 2 reaches the set value, the counter 2 controls the buzzer 3 to sound an alarm to remind the staff that the ring cutting knife 75 has reached its service life and the ring cutting knife 75 can be replaced in time.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A counting device for plastic bottle cap ring cutting, characterized in that: The device comprises a box (1), a counter (2) and a buzzer (3), wherein the counter (2) is mounted at the bottom of the inner cavity of the box (1), the buzzer (3) is mounted on the front of the box (1), and the counter (2) is electrically connected to the buzzer (3). The counting device for ring cutting of plastic bottle caps also comprises: a support plate (4), a discharge hole (5), a discharge trough (6), a ring cutting mechanism (7) and a counting mechanism (8); the support plate (4) is fixedly connected to the upper surface of the box (1), the discharge hole (5) is opened on the right side of the upper surface of the support plate (4), the discharge trough (6) is mounted on the front of the box (1) in a manner inclined downward from the back to the front, and the discharge trough (6) is located directly below the discharge hole (5), and the ring cutting mechanism (7) and the counting mechanism (8) are both mounted on the front side of the upper surface of the support plate (4).

2. A counting device for plastic bottle cap ring cutting according to claim 1, characterized in that: The counting mechanism (8) comprises: a box body (81), a guide rod (82), teeth (83), a squeezing ball (84), a spur gear (85), a rocker rod (86), a tension spring (87), a first contact point (88) and a second contact point (89); The box body (81) is embedded in the front side of the upper surface of the support plate (4), and the box body (81) is located in front of the ring cutting knife (75). The guide rod (82) is inserted on the left side of the bottom of the box body (81) so as to be able to slide up and down. The number of teeth (83) is several and they are installed on the right side wall of the guide rod (82) from top to bottom. The squeezing ball (84) is installed on the top of the guide rod (82), and the squeezing ball (84) extends out of the upper surface of the box body (81). The spur gear (85) is installed in the middle of the inner cavity of the box body (81) so as to be able to rotate around its own axis through a pin shaft, and the spur gear (85) is connected to the inner cavity of the box body (81). The teeth (83) are meshed and connected, the swing rod (86) is transversely mounted on the outer wall of the spur gear (85), one end of the tension spring (87) is mounted on the right end of the lower surface of the swing rod (86), and the other end of the tension spring (87) is mounted on the bottom of the inner cavity of the box body (81), and the swing rod (86) is pulled down under the tension of the tension spring (87), the first contact (88) is mounted on the right end of the upper surface of the swing rod (86), and the first contact (88) is externally connected to a power source, and the second contact (89) is mounted on the top of the right inner wall of the box body (81), and the second contact (89) is electrically connected to the counter (2).

3. A counting device for plastic bottle cap ring cutting according to claim 2, characterized in that: The counting device for circular cutting of plastic bottle caps further comprises: a sleeve (9), a motor (10), a first rotating shaft (11), a rotating disk (12), a circular disk (13), a limiting groove (14), a lifting mechanism (15) and a baffle (16); The sleeve (9) is vertically mounted at the center of the support plate (4); the motor (10) is mounted on the lower surface of the support plate (4); the first rotating shaft (11) is mounted on the inner wall of the sleeve (9) via a bearing so as to be rotatable around its own axis, and the bottom of the first rotating shaft (11) is connected to the output end of the motor (10) via a coupling; the turntable (12) is mounted on the top of the first rotating shaft (11); the turntable (12) is rotated under the drive of the motor (10); the disc (13) is fixedly connected to the outer wall of the sleeve (9); the limit grooves (14) are connected end to end and are arranged on the side wall of the disc (13); the lifting mechanism (15) is a plurality of lifting mechanisms (15) which are vertically mounted on the outer edge of the upper surface of the turntable (12) along the circumferential direction; the baffle (16) is mounted on the upper surface of the support plate (4), and the baffle (16) is located close to the discharge hole (5); and the movement direction of the plastic bottle cap is restricted by the baffle (16).

4. A counting device for plastic bottle cap ring cutting according to claim 3, characterized in that: The left and right sides of the limiting groove (14) are inclined surfaces, and there is a height difference between the front and rear sides.

5. A counting device for ring cutting of plastic bottle caps according to claim 4, characterized in that: The switching mechanism (7) comprises: a transmission box (71), a screw rod (72), an outer rod (73), an arc plate (74), a ring cutting knife (75), a first bevel gear (76), a positioning blind hole (77), a second rotating shaft (78), a second bevel gear (79), a driving rod (710), a handle (711) and an insertion rod (712); The transmission box (71) is fixedly connected to the bottom of the inner cavity of the box body (1). Two screw rods (72) are installed on the left and right sides of the upper surface of the transmission box (71) through bearings so as to be rotatable around their own axes. The outer rod (73) is screwed to the outer wall of the screw rod (72). The arc plate (74) is installed on the top of the outer rod (73). The ring cutting knife (75) is installed on the upper surface of the arc plate (74). When the screw rod (72) rotates clockwise or counterclockwise, the rotation force of the screw thread (72) can drive the outer rod (73) to drive the ring cutting knife (75) to rise or fall. The first bevel gear (76) is installed at the bottom end of the screw rod (72). The positioning blind hole (77) There are a plurality of such gears, which are equidistantly arranged at the front center of the transmission box (71) along the circumferential direction. The second rotating shaft (78) is mounted at the front center of the transmission box (71) via a bearing so as to be rotatable about its own axis. The second bevel gear (79) is mounted at the rear end of the second rotating shaft (78), and the second bevel gear (79) is meshingly connected with the first bevel gear (76). The driving rod (710) is mounted at the front end of the second rotating shaft (78) via a pin shaft. The handle (711) and the insertion rod (712) are respectively mounted at the top of the front and rear sides of the driving rod (710). The insertion rod (712) is inserted into the inner cavity of the positioning blind hole (77) to position the driving rod (710).

6. A counting device for plastic bottle cap ring cutting according to claim 5, characterized in that: The transmission ratio between the first bevel gear (76) and the second bevel gear (79) is less than 1.

7. A counting device for ring cutting of plastic bottle caps according to claim 6, characterized in that: The insertion rod (712) is in a diamond shape and is made of elastic material.

8. A counting device for plastic bottle cap ring cutting according to claim 7, characterized in that: The maximum distance that the squeezing ball (84) extends out of the upper surface of the box body (81) is less than its own radius.

9. A counting device for plastic bottle cap ring cutting according to claim 8, characterized in that: The lifting mechanism (15) comprises: a limiting rod (151), a lifting column (152), a first roller (153) and a second roller (154); A limiting rod (151) is vertically mounted on the upper surface of the rotating disk (12); a lifting column (152) is slidably sleeved on the outer wall of the limiting rod (151) up and down; a first roller (153) is mounted on the top of the outer wall of the lifting column (152), and the first roller (153) is inserted into the inner cavity of the limiting groove (14); and a second roller (154) is mounted on the bottom end of the lifting column (152).

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