Bottle cap conveying equipment

Abstract

The invention relates to the technical field of packaging machinery, and discloses a bottle cap conveying device which comprises a base, a servo gear motor, a cap feeding cam, a supporting seat, a sliding bearing and a push rod installed in a sliding mode, a push block is arranged at one end of the push rod, and a U-shaped protruding section and a roller bearing installed in the U-shaped protruding section are arranged at the other end of the push rod. A compression spring is arranged to enable the roller bearing to cling to the outer circumferential track curved surface of the cap entering cam; the servo gear motor drives the cover feeding cam to rotate so as to drive the push rod and the push block to slide back and forth in the horizontal direction; when the cap feeding cam rotates to the near rest area to be tightly attached to the roller bearing, the push block retracts to the initial position, and when the cap feeding cam rotates to the far rest area to be tightly attached to the roller bearing, the push block pushes out the bottle caps in the cap discharging channel. According to the bottle cap feeding and separating device, the bottle caps can be fed and separated, the bottle caps are input into a subsequent transmission shaft system according to a certain interval distance, and the cap feeding frequency can adapt to the subsequent production frequency through matching of the rotating speed of the cap feeding cam and the rotating speed of the subsequent transmission shaft system.

Description

Technical Field

[0001] The invention relates to the technical field of packaging machinery, and in particular to a bottle cap feeding device. Background Art

[0002] In the production of bottle caps (including round aluminum caps, iron caps, pull-ring aluminum caps, etc.), beverage filling and sealing or other similar processes, it is often necessary to sequentially input the bottle caps that have been arranged in a row and have the same cap opening orientation into the subsequent transmission shaft system or production equipment.

[0003] However, the bottle cap feeding equipment in the prior art cannot achieve the frequency of inputting bottle caps per minute to adapt to the production frequency of the subsequent equipment to meet the normal production efficiency of the entire assembly line. It is necessary to develop a device to meet the requirements of the cap feeding action under similar working conditions. Summary of the invention

[0004] In view of the defects of the prior art, the present invention provides a bottle cap feeding device. By using the device, during the production, filling, sealing or other similar processes of bottle caps, bottle caps that have been arranged in a row and have the same cap opening direction can be input into a subsequent transmission shaft system or other production equipment at a certain interval to adapt to the production frequency of the subsequent equipment.

[0005] The overall technical solution of the present invention is as follows: A bottle cap feeding device comprises a base, in which a servo reduction motor is fixedly installed, the shaft of the servo reduction motor extends upward, a cap feeding cam is fixedly installed on the shaft extension section, and the outer circumferential track curved surface of the cap feeding cam is provided with a cam far rest area and a cam near rest area; it comprises a supporting seat, in the center hole of the supporting seat a sliding bearing is fixedly installed, in the middle of the sliding bearing a push rod is slidably installed, one end of the push rod is provided with a push block, the push block is used to push the bottle cap in the lower cover channel, and the other end is provided with a U-shaped protruding section, a roller bearing is installed inside the U-shaped protruding section, a compression spring is provided between the U-shaped protruding section and the sliding bearing, and the compression spring The pressure on the U-shaped protruding section is maintained so that the roller bearing is in close contact with the outer circumferential track surface of the cover feeding cam; the servo reduction motor drives the cover feeding cam to rotate, and the cover feeding cam drives the push rod and the push block to slide back and forth in the horizontal direction; when the servo reduction motor drives the cover feeding cam to rotate until the cam near rest area is in close contact with the roller bearing, the push block retracts to the initial position closest to the cover feeding cam and away from the lower cover channel; when the servo reduction motor drives the cover feeding cam to rotate until the cam far rest area is in close contact with the roller bearing, the push block is pushed to the farthest distance from the cover feeding cam to push out the bottle cap in the lower cover channel.

[0006] M sections of cam far rest areas and M sections of cam near rest areas are evenly distributed on the outer circumferential surface trajectory curve of the cover feeding cam, M≥1, one side of each section of the cam far rest area is sequentially provided with a cover pushing curve and a cam near rest area, and the other side is sequentially provided with a return curve and a cam near rest area, the M sections of the cam near rest area, the cover pushing curve, the cam far rest area and the return curve are sequentially connected end to end to constitute the outer circumferential surface trajectory curve of the entire cover feeding cam.

[0007] The specific structure of the device of the present invention is: The servo reduction motor is fixed to the lower surface of the top plate of the base by screws, and the servo reduction motor is also provided with a shaft sleeve, which is fixed to the shaft extension section of the servo reduction motor by a flat key and a set screw, and the cover entry cam is fixed to the upper end of the shaft sleeve by screws. When the servo reduction motor rotates, the shaft sleeve and the cover entry cam are driven to rotate together.

[0008] The roller bearing is fixed inside the U-shaped protruding section at the right end of the push rod through a pin shaft, and the outer ring of the roller bearing can rotate freely around the pin shaft, and the outer ring of the roller bearing is in close contact with the outer circumferential track surface of the cover entry cam.

[0009] The device is also provided with a pressure cover, which fixes the sliding bearing in the center hole of the support seat, and the compression spring is arranged between the pressure cover and the U-shaped protruding section at the right end of the push rod. The left end face of the compression spring presses the end face of the pressure cover, and the right end face of the compression spring is tightly against the U-shaped protruding section at the right end of the push rod, so as to always maintain pressure on the push rod in the right direction, so that the outer ring of the roller bearing is tightly against the outer circumferential trajectory surface of the cover feeding cam.

[0010] The device is also provided with a bent seat, the support seat is fixed on the top surface of the bent seat, and the bent seat is fixed on the side surface of the base.

[0011] Furthermore, in order to constrain the sliding of the push rod, a guide rod is provided, the right end of which is fixed to the push rod by a pin and a nut, and the guide rod can slide horizontally with the push rod; the optical axis section at the left end of the guide rod is matched with the through hole below the center of the support seat with a large clearance, and the optical axis section of the guide rod can slide freely in the through hole of the support seat. When the push rod slides left and right, the guide rod constrains the sliding of the push rod, preventing the push rod from rotating around its own axis while sliding.

[0012] The working principle of the device of the present invention is as follows: This equipment cooperates with the lower cover channel of the previous process and the transmission shaft system of the subsequent process. The bottle cap enters the position directly in front of the push block from the upper lower cover channel and is supported by the limit block below the lower cover channel, so that the center of the bottle cap at the bottom of the lower cover channel is at the same horizontal height as the push block, the bottle cap surface faces the push block, and the inner side faces the negative pressure suction cup of the transmission shaft system.

[0013] When the cap feeding cam contacts the roller bearing in the near rest area of ​​the cam, the push block is in the initial position and does not contact the bottle caps. The bottle caps in the lower cover channel can fall freely until they are supported by the limit block below the lower cover channel.

[0014] When the cap feeding cam contacts the roller bearing in the far rest area of ​​the cam, the push block moves with the push rod to the farthest position from the cap feeding cam, and the bottle cap at the bottom of the lower cap channel is pushed to the farthest position by the push block. When the bottle cap is at the farthest position, a negative pressure suction cup of the transmission shaft system can just absorb the inner side of the bottle cap, and then the bottle cap is absorbed by the negative pressure suction cup of the transmission shaft system and starts to rotate with the negative pressure suction cup, and the bottle cap is transferred to the subsequent processing steps.

[0015] The servo reduction motor drives the cap feeding cam to rotate, and the roller bearing, push rod and guide rod make horizontal reciprocating sliding under the action of the spring, driving the push block fixed at the left end of the push cap to make horizontal reciprocating free sliding together with the push rod. For each rotation of the cap feeding cam, the roller bearing contacts the M cam far resting areas on the trajectory curve of the outer peripheral surface of the cap feeding cam, and the push rod pushes forward M times to push the M bottle caps to the negative pressure suction cup of the transmission shaft system.

[0016] The parameters of each component of the device of the present invention must conform to certain logical relationships. On the one hand, the device can operate normally only if these logical relationships are met. On the other hand, the adjustment of parameters and structures according to these logical relationships can make the device adapt to more working conditions: The radius of the track curve of the cam far rest zone of the cap feeding cam is R1, the radius of the track curve of the cam near rest zone is R2, and the cam lift from the cam near rest zone to the cam far rest zone is Δ=R1-R2; during the rotation of the cap feeding cam, the push block slides back and forth, and its sliding stroke is Δ=R1-R2; when the push block slides forward, the distance that the bottle cap at the bottom of the lower cover channel is pushed forward is Δ=R1-R2.

[0017] The inputted bottle cap height dimension H should not be greater than the lift Δ of the cap feeding cam 10, that is, when H is less than Δ, the cap feeding mechanism can perform normal cap feeding action.

[0018] If the entire outer surface trajectory curve of the cover feeding cam has M sections of cam far resting areas, and the entire circumference of the subsequent transmission shaft system is evenly distributed with P negative pressure suction cups, and the speed of the transmission shaft system is n1 (rpm), then the speed n2 of the cover feeding cam 10, that is, the speed of the servo reduction motor, should be: n2=(P×n1) / M (rpm) Furthermore, the push-cap curve and the return curve in the trajectory curve of the outer peripheral surface of the push-cap cam are not completely symmetrical, but have the following characteristics: the push-cap curve is gentle and the return curve is prominent. The advantage of the above design is that when the push-cap cam rotates clockwise, in each push-cap cycle, the roller bearing first contacts the push-cap curve; during this period of time, the push block pushes the cap surface to push the bottle cap forward. In order to prevent the bottle cap from being unstable when it is pushed to the front end position, that is, the bottle cap cannot stay stably at the end of the push stroke, the push stroke time of the push-cap curve is intentionally set to be slightly longer. In the return stroke curve stage, because the bottle cap has been sucked and turned away by the negative pressure suction cup, the push block belongs to the empty return stage, so in this stage, the return stroke time is set to be slightly shorter, so that the push block returns to the initial position earlier, so that the next bottle cap in the lower cover channel can smoothly fall into the initial position of the push cap (that is, the front end of the push block). When the push stroke and return stroke are the same, but the push stroke time is slightly longer and the return stroke time is slightly shorter, the left curve in the far rest area of ​​the cam is slightly prominent, and the right curve is slightly flat.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can realize the cap feeding and cap separation actions for bottle caps (including round bottle caps and pull-ring bottle caps), and input the bottle caps that have been arranged in a row and have the same cap opening direction into the subsequent transmission shaft system or other production equipment at a certain interval; 2. The present invention can achieve the adaptation of the frequency of bottle cap input per minute to the production frequency of subsequent equipment by matching the outer circumferential surface trajectory curve and rotation speed of the cap feeding cam with the rotation speed of the subsequent transmission shaft system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the bottle cap feeding device, wherein (a) is a front sectional view and (b) is a top view; Figure 2 It is a schematic diagram of the local structure of the bottle cap feeding device, wherein (a) is a front sectional view, and (b) is a top sectional view; Figure 3 It is a schematic diagram of the cover feeding cam structure; Figure 4 It is a schematic diagram of the state of the bottle cap feeding device when the cap feeding cam and the ball bearing are in contact with each other in the near rest area of ​​the cam, wherein (a) is a front sectional view and (b) is a top view; Figure 5It is a schematic diagram of the state of the bottle cap feeding device when the cap feeding cam and the ball bearing are in contact with each other in the far rest area of ​​the cam, wherein (a) is a front sectional view and (b) is a top view.

[0021] Among them: 10-cover feeding cam; 11-push rod; 12-support seat; 13-base; 14-servo reduction motor; 15-bend seat; 16-guide rod; 17-push block; 18-sliding bearing; 19-pressure cover; 20-compression spring; 21-roller bearing; 22-sleeve; 101-cam far rest area; 102-cam near rest area; 103-cover pushing curve; 104-return curve; 30-lower cover channel; 31-bottle cap; 40-transmission shaft system; 41-negative pressure suction cup. DETAILED DESCRIPTION

[0022] The present invention is further described below through the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0023] See also Figure 1 - 5. The present invention discloses a bottle cap feeding device, comprising a base 13, a servo reduction motor 14 is installed below the base 13, the servo reduction motor 14 extends upwardly, and the shaft extension section is fixedly installed with a cap feeding cam 10, and the outer circumferential track curved surface of the cap feeding cam 10 is provided with a cam far rest area 101 and a cam near rest area 102; comprising a support seat 12, a sliding bearing 18 is fixedly installed in the center hole of the support seat 12, a push rod 11 is slidably installed in the middle of the sliding bearing 18, one end of the push rod 11 is provided with a push block 17, the push block 17 is used to push the bottle cap in the lower cover channel, and the other end is provided with a U-shaped protruding section, a roller bearing 21 is installed inside the U-shaped protruding section, and a roller bearing 21 is installed between the U-shaped protruding section and the sliding bearing 18. There is a compression spring 20, which maintains pressure on the U-shaped protruding section so that the roller bearing 21 is close to the outer circumferential track surface of the cover-entering cam 10; the servo reduction motor 14 drives the cover-entering cam 10 to rotate, and the cover-entering cam 10 drives the push rod 11 and the push block 17 to slide back and forth in the horizontal direction; when the servo reduction motor 14 drives the cover-entering cam 10 to rotate until the cam near rest area is close to the roller bearing 21, the push block 17 retracts to the initial position closest to the cover-entering cam 10 and away from the lower cover channel. When the servo reduction motor 14 drives the cover-entering cam 10 to rotate until the cam far rest area is close to the roller bearing 21, the push block 17 is pushed to the farthest point from the cover-entering cam 10, and the bottle cap in the lower cover channel is pushed out.

[0024] See also Figure 3, M sections of cam far rest areas and M sections of cam near rest areas are evenly distributed on the outer circumferential surface trajectory curve of the cap feeding cam, M≥1, one side of each section of the cam far rest area is sequentially provided with a cap pushing curve and a cam near rest area, and the other side is sequentially provided with a return curve and a cam near rest area, and the M sections of the cam near rest area, the cap pushing curve, the cam far rest area, and the return curve are sequentially connected end to end to form the outer circumferential surface trajectory curve of the entire cap feeding cam.

[0025] As embodiment 1, the specific structure of the device of the present invention is shown in Figure 1 The servo reduction motor 14 is fixed to the lower surface of the top plate of the base 13 by screws. The servo reduction motor 14 is also provided with a shaft sleeve 22. The shaft sleeve 22 is fixed to the shaft extension section of the servo reduction motor 14 by a flat key and a set screw. The cover entry cam 10 is fixed to the upper end of the shaft sleeve 22 by screws. When the servo reduction motor rotates, the shaft sleeve and the cover entry cam are driven to rotate together.

[0026] As the second embodiment, the specific structure of the device of the present invention is shown in Figure 1-2 The roller bearing 21 is fixed inside the U-shaped protruding section at the right end of the push rod 11 through a pin shaft. The outer ring of the roller bearing 21 can rotate freely around the pin shaft, and the outer ring of the roller bearing 21 is closely attached to the outer circumferential track surface of the cover inlet cam 10.

[0027] As the third embodiment, the specific structure of the device of the present invention is shown in Figure 1-2 A pressure cover 19 is also provided, which fixes the sliding bearing 18 in the center hole of the support seat 12. The compression spring 20 is arranged between the pressure cover 19 and the U-shaped protruding section at the right end of the push rod 11. The left end face of the compression spring 20 presses the end face of the pressure cover 19, and the right end face of the compression spring 20 is close to the U-shaped protruding section at the right end of the push rod 11, always maintaining pressure on the push rod 11 in the right direction, so that the outer ring of the roller bearing 21 is close to the outer circumferential track surface of the cover cam 10.

[0028] As the fourth embodiment, the specific structure of the device of the present invention is shown in Figure 1 A curved seat 15 is also provided, the supporting seat 12 is fixed on the top surface of the curved seat 15, and the curved seat 15 is fixed on the side surface of the base 13.

[0029] As Example 5, the specific structure of the device of the present invention is shown in Figure 1-2 , a guide rod 16 is also provided, the right end of the guide rod 16 is fixed to the push rod 11 through a pin and a nut, and the guide rod 16 can slide horizontally with the push rod 11; the optical axis section of the left end of the guide rod 16 is matched with the through hole below the center of the support seat 12 with a large clearance, and the optical axis section of the guide rod 16 can slide freely in the through hole of the support seat 12. When the push rod 11 slides left and right, the guide rod 16 constrains the sliding of the push rod 11, preventing the push rod 11 from rotating around its own axis while sliding.

[0030] See also Figure 4-5 The working principle of the device of the present invention is as follows: the device cooperates with the lower cover channel 30 of the previous process and the transmission shaft system 40 of the subsequent process. The bottle cap enters the position directly in front of the push block 17 from the upper lower cover channel 30 and is supported by the limit block below the lower cover channel 30, so that the center of the bottle cap 31 at the bottom of the lower cover channel 30 is at the same horizontal height as the push block 17, the cover surface of the bottle cap 31 faces the push block 17, and the inner side faces the negative pressure suction cup 41 of the transmission shaft system 40.

[0031] See also Figure 3 , Figure 4 When the cap feeding cam 10 contacts the roller bearing 21 in the cam near rest area, the push block 17 is in the initial position and does not contact the bottle cap 31. The bottle cap 31 in the lower cover channel 30 can fall freely until it is supported by the limit block below the lower cover channel 30.

[0032] See also Figure 3 , Figure 5 When the cap-feeding cam 10 contacts the roller bearing 21 in the far resting area of ​​the cam, the push block 17 moves with the push rod 11 to the farthest position from the cap-feeding cam 10, and the bottle cap 31 at the bottom of the lower cap channel 30 is pushed to the farthest position by the push block 17. When the bottle cap 31 is at the farthest position, a negative pressure suction cup 41 of the transmission shaft system 40 can just absorb the inner side of the bottle cap 31, and then the bottle cap 31 is absorbed by the negative pressure suction cup 41 of the transmission shaft system 40 and starts to rotate with the negative pressure suction cup 41, and the bottle cap 31 is transferred to the subsequent processing steps.

[0033] The parameters of each component of the device of the present invention must conform to certain logical relationships. Adjusting the parameters and structure according to these logical relationships can make the device adapt to more working conditions: See also Figure 4-5 Every time the cap-introducing cam 10 rotates one circle, the roller bearing 21 contacts the M cam far resting areas on the trajectory curve of the outer peripheral surface of the cap-introducing cam 10, and the push rod 11 is pushed forward M times to push the M bottle caps 31 toward the negative pressure suction cup 41 of the transmission shaft system 40.

[0034] See also Figure 3 The radius of the track curve of the far resting area of ​​the cover-entering cam 10 is R1, the radius of the track curve of the near resting area of ​​the cam is R2, and the cam lift Δ from the near resting area of ​​the cam to the far resting area of ​​the cam is R1-R2; see Figure 4 , 5 During the rotation of the cap feeding cam 10, the push block 17 slides back and forth, and its sliding stroke is Δ=R1-R2; when the push block 17 slides forward, the bottle cap 31 at the bottom of the lower cover channel 30 is pushed forward by a distance of Δ=R1-R2.

[0035] The inputted bottle cap height dimension H should not be greater than the lift Δ of the cap feeding cam 10, that is, when H is less than Δ, the cap feeding mechanism can perform normal cap feeding action.

[0036] If the entire outer surface trajectory curve of the cover feeding cam 10 has M sections of cam far resting areas, and the entire circumference of the subsequent transmission shaft system 40 is evenly distributed with P stations of negative pressure suction cups 41, and the speed of the transmission shaft system 40 is n1 (rpm), then the speed n2 of the cover feeding cam 10, that is, the speed of the servo reduction motor, should be: n2=(P×n1) / M (rpm) The following provides a sixth embodiment: In actual use engineering, the number of segments M of the track curve of the outer peripheral surface of the cover feeding cam including the far resting zone is a natural number, and the number of stations P of the transmission shaft system is a larger natural number, and P is an integer multiple of M, that is: P=K×M, where the multiple K is an integer.

[0037] Then when the transmission shaft speed is n1 (rpm), the cover feeding cam speed is n2 = K × n1 (rpm).

[0038] Under this operating condition, the cap feeding cam can push the push block forward M×n2 times per minute, and the number of negative pressure suction cups that the transmission shaft rotates at the cap connection point is P×n1 times per minute, satisfying the relationship: P×n1=K×M×n1=n2×M That is, the number of bottle caps that the cam can push out per minute = the number of bottle caps that the transmission shaft system can absorb and receive at the cap receiving point by using the negative pressure suction cup per minute. Under this coordination relationship, the cap delivery system can operate smoothly and perform the actions of pushing, sucking and delivering caps.

[0039] It should be noted that the multiple K does not have to be an integer. If K is a non-integer multiple, the speed ratio of the servo motor and the transmission shaft system also needs to be designed as a non-integer multiple. In actual use, higher speed control requirements for the servo motor will be placed.

[0040] It should be noted that all the above figures show that a servo reduction motor is used as the power source of the cover entry cam. The present invention can also output power from the transmission shaft system using gears, pulleys, sprockets, friction wheels or other methods to drive the cover entry cam to rotate, as long as the rotation speed of the cover entry cam is met, and no further description will be given.

[0041] The above description is only a preferred example of the present invention and is not any formal or substantial limitation to the present invention. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. Any equivalent changes and modifications made to the above examples based on the essential technology of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A bottle cap feeding device, characterized in that: The invention comprises a base, in which a servo reduction motor is fixedly installed, the shaft of the servo reduction motor extends upward, a cover-feeding cam is fixedly installed on the shaft extension section, and a cam far rest area and a cam near rest area are provided on the outer circumferential track curved surface of the cover-feeding cam; the invention comprises a supporting seat, in the center hole of the supporting seat a sliding bearing is fixedly installed, a push rod is slidably installed in the middle of the sliding bearing, one end of the push rod is provided with a push block, the push block is used to push the bottle cap in the lower cover channel, and the other end is provided with a U-shaped protruding section, a roller bearing is installed inside the U-shaped protruding section, a compression spring is provided between the U-shaped protruding section and the sliding bearing, and the compression spring keeps the bottle cap in contact with the lower cover. The pressure of the U-shaped protruding section makes the roller bearing close to the outer circumferential track surface of the cover feeding cam; the servo reduction motor drives the cover feeding cam to rotate, and the cover feeding cam drives the push rod and the push block to slide back and forth in the horizontal direction; when the servo reduction motor drives the cover feeding cam to rotate until the near cam rest area is close to the roller bearing, the push block retracts to the initial position closest to the cover feeding cam and away from the lower cover channel; when the servo reduction motor drives the cover feeding cam to rotate until the far rest area of ​​the cam is close to the roller bearing, the push block is pushed to the farthest point from the cover feeding cam, and the bottle cap in the lower cover channel is pushed out.

2. The bottle cap feeding device according to claim 1, characterized in that: M sections of cam far rest areas and M sections of cam near rest areas are evenly distributed on the outer circumferential surface trajectory curve of the cover feeding cam, M≥1, one side of each section of the cam far rest area is sequentially provided with a cover pushing curve and a cam near rest area, and the other side is sequentially provided with a return curve and a cam near rest area, the M sections of the cam near rest area, the cover pushing curve, the cam far rest area and the return curve are sequentially connected end to end to constitute the outer circumferential surface trajectory curve of the entire cover feeding cam.

3. The bottle cap feeding device according to claim 1, characterized in that: The servo reduction motor is fixed to the lower surface of the top plate of the base by screws. The servo reduction motor is also provided with a shaft sleeve, which is fixed to the shaft extension section of the servo reduction motor by a flat key and a set screw. The cover entry cam is fixed to the upper end of the shaft sleeve by screws. When the servo reduction motor rotates, the shaft sleeve and the cover entry cam are driven to rotate together.

4. The bottle cap feeding device according to claim 1, characterized in that: The roller bearing is fixed inside the U-shaped protruding section at the right end of the push rod through a pin shaft, and the outer ring of the roller bearing can rotate freely around the pin shaft, and the outer ring of the roller bearing is in close contact with the outer circumferential track surface of the cover entry cam.

5. The bottle cap feeding device according to claim 1, characterized in that: A pressure cover is also provided, which fixes the sliding bearing in the center hole of the support seat, and the compression spring is arranged between the pressure cover and the U-shaped protruding section at the right end of the push rod. The left end face of the compression spring presses the end face of the pressure cover, and the right end face of the compression spring is tightly against the U-shaped protruding section at the right end of the push rod, always maintaining pressure on the push rod in the right direction, so that the outer ring of the roller bearing is tightly against the outer circumferential trajectory surface of the cover entry cam.

6. The bottle cap feeding device according to claim 1, characterized in that: A bent seat is also provided, the support seat is fixed on the top surface of the bent seat, and the bent seat is fixed on the side surface of the base.

7. The bottle cap feeding device according to claim 1, characterized in that: A guide rod is also provided, the right end of which is fixed to the push rod by a pin and a nut, and the guide rod can slide horizontally with the push rod; the optical axis section at the left end of the guide rod is matched with a through hole below the center of the support seat with a large clearance, and the optical axis section of the guide rod can slide freely in the through hole of the support seat.

8. The bottle cap feeding device according to claim 2, characterized in that: The bottle cap feeding device cooperates with the lower cap channel of the previous process and the transmission shaft system of the subsequent process. The bottle cap enters the position just in front of the push block from the upper lower cap channel and is held by the limit block below the lower cap channel, so that the center of the bottle cap at the bottom of the lower cap channel is at the same horizontal height as the push block, the cap surface of the bottle cap faces the push block, and the inner side faces the negative pressure suction cup of the transmission shaft system; when the cap feeding cam contacts the roller bearing in the near-rest area of ​​the cam, the push block is in the initial position and does not contact the bottle cap, and the bottle cap in the lower cap channel can fall freely until it is stopped by the limit block below the lower cap channel. The bottle cap is held by the positioning block; when the cap feeding cam contacts the roller bearing in the far rest area of ​​the cam, the push block moves together with the push rod to the farthest position from the cap feeding cam, and the bottle cap at the bottom of the lower cover channel is pushed to the farthest position by the push block. When the bottle cap is at the farthest position, a negative pressure suction cup of the transmission shaft system can just adsorb the inner side of the bottle cap. Subsequently, the bottle cap is adsorbed by the negative pressure suction cup of the transmission shaft system and starts to rotate together with the negative pressure suction cup, and the bottle cap is transferred to the subsequent processing procedure; for every rotation of the cap feeding cam, the push rod pushes forward M times, pushing M bottle caps to the negative pressure suction cup of the transmission shaft system.

9. The bottle cap feeding device according to claim 8, characterized in that: The radius of the trajectory curve of the cam far rest zone of the cap feeding cam is R1, the radius of the trajectory curve of the cam near rest zone is R2, and the cam lift from the cam near rest zone to the cam far rest zone is Δ=R1-R2; during the rotation of the cap feeding cam, the reciprocating sliding stroke of the push block is Δ=R1-R2; when the push block slides forward, the distance that the bottle cap at the bottom of the lower cover channel is pushed forward is Δ=R1-R2; the input bottle cap must meet the height dimension H<Δ; the outer circumferential surface trajectory curve of the cap feeding cam is provided with M sections of cam far rest zones, and the subsequent transmission shaft system is evenly distributed with negative pressure suction cups of P stations on the circumference, the rotation speed of the transmission shaft system is n1, and the rotation speed n2 of the cap feeding cam 10 meets the following relationship: n2=(P×n1) / M.

10. The bottle cap feeding device according to claim 2, characterized in that: The cover pushing curve and the return curve in the trajectory curve of the outer peripheral surface of the cover pushing cam are asymmetrical, showing the characteristics of a gentle cover pushing curve and a prominent return curve.

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