An opening device for an aluminum-plastic combined cover of an injection bottle

Abstract

The present invention relates to an opening device for an aluminum-plastic composite cap of an injection bottle. The opening device includes a frame for positioning the bottleneck, a cover-opening swing piece, a driving mechanism, and an anti-collision bottle mechanism. The cover-opening swing piece is pivotally connected to the anti-collision bottle mechanism with a first hinge shaft thereon, and the first hinge shaft is located above the positioning edge. The anti-collision bottle mechanism is used to drive the first hinge shaft to drive the cover-opening swing piece to move up and down. The cover-opening swing piece is provided with a cover-opening blade edge. The driving mechanism is connected to the cover-opening swing piece to drive the cover-opening swing piece to swing around the axis of the first hinge shaft. The anti-collision bottle mechanism is adopted so that the cover-opening blade edge of the cover-opening swing piece can effectively avoid giving way and not contact the aluminum cap of the injection bottle when the cover-opening swing piece swings back, which can ensure that the aluminum cap is not damaged and allow the user to use the opening device calmly.

Description

Technical field:

[0001] The invention belongs to the field of medical devices, and in particular relates to an opening device for an aluminum-plastic combined cover of an injection bottle. Background technology:

[0002] At present, most of the existing injection bottles such as medicinal vials and infusion bottles are packaged with aluminum-plastic combination covers. When in use, the plastic cover must be pried open by hand to expose the middle part of the rubber stopper for the needle to be inserted. Due to the large difference between the allowable values ​​of the minimum opening force and the maximum opening force of the injection bottle within the allowable range of the existing manufacturing standards, some are not easy to pry open. Especially in places where injection work is busy and the workload of opening the caps is large, it is still very tiring and easy to hurt the hands to open these bottle caps by hand. For this reason, many mechanical opening devices have been invented to improve the above situation. However, when the opening blade in the existing opening device swings back, due to the fast swinging speed, if the bottle is not removed in time, the opening blade is easy to scrape or even damage the aluminum cover. If the aluminum cover is deformed or even damaged, it is very easy to cause burrs on the opening mouth, which often hangs on the cotton ball, wipes poorly, and even hurts the fingers in the subsequent cleaning and disinfection process, so it is very important to protect the aluminum cover. Summary of the invention:

[0003] The technical problem to be solved by the present invention is to provide an opening device for an aluminum-plastic composite cover of an injection bottle which has a simple structure and can effectively prevent the swing back of the cover opening blade from damaging the aluminum cover.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: an opening device for an aluminum-plastic composite cover of an injection bottle, wherein the injection bottle has a bottle body, a bottleneck and a plastic cover. The opening device includes a frame for positioning the bottleneck, a cover-opening swing piece for prying open the plastic cover, a driving mechanism and an anti-collision bottle mechanism, the frame has a positioning edge for contacting the bottleneck, a first hinge shaft is provided on the cover-opening swing piece, the first hinge shaft is connected to the anti-collision bottle mechanism, the first hinge shaft is located above the positioning edge, the anti-collision bottle mechanism drives the first hinge shaft to drive the cover-opening swing piece to move up and down, the cover-opening swing piece is provided with a cover-opening blade edge, the driving mechanism is connected to the cover-opening swing piece, the driving mechanism is used to drive the cover-opening swing piece to swing around the axis of the first hinge shaft, the opening device has a bottle-opening state and a return state, when the opening device is in the bottle-opening state, the driving mechanism drives the cover-opening swing piece to swing in a direction away from the bottle body and thus pry open the plastic cover; when the opening device is in the return state, the driving mechanism drives the cover-opening swing piece to swing in a direction close to the bottle body, and the anti-collision bottle mechanism drives the first hinge shaft to move downward and thus causes the cover-opening blade edge to move downward.

[0005] Preferably, a first convex portion is provided on the side of the cover opening rocker, and the anti-collision bottle mechanism includes a rocker, a second return spring, a second stop pile, a knife retracting rocker, a third return spring and a third stop pile; the first hinge shaft is connected to the rocker pivot, and the rocker is connected to the frame pivot through a fifth hinge shaft, the second return spring is fixedly connected to the frame and the upper part of the rocker respectively, and the second stop pile is arranged above the rocker; the knife retracting rocker is connected to the frame pivot through a sixth hinge shaft, the knife retracting rocker has an upper abutment surface and a lower abutment surface, and the side of the knife retracting rocker is provided with a second convex portion cooperating with the first convex portion; the third return spring is arranged near the knife retracting rocker. On one side of the lower abutment surface of the rocker arm, the third stop pile is arranged on a side close to the upper abutment surface of the knife retracting rocker arm, and the third return spring is used to provide an elastic force to drive the knife retracting rocker arm to resist the third stop pile; the cover opening rocker has an initial position and an open position. When the cover opening rocker is in the initial position, the second return spring pulls the rocker arm upward so that the upper part of the rocker arm is in contact with the lower part of the second stop pile, and the third return spring pushes the knife retracting rocker arm to resist the third stop pile, and the first convex portion is located on the side close to the upper abutment surface of the knife retracting rocker arm; when the cover opening rocker is in the open position, the knife retracting rocker arm rotates downward and separates from the third stop pile, and the first convex portion is located above the second convex portion.

[0006] Specifically, when the opening device opens the cover, the driving mechanism drives the cover-opening rocker to move from the initial position to the open position, the first convex portion abuts against the upper abutment surface and moves along the upper abutment surface from the bottom of the second convex portion to the top of the second convex portion, and the cover-opening rocker drives the knife-retracting rocker rod to rotate away from the third stop pile; when the opening device returns to its position, the driving mechanism drives the cover-opening rocker to move from the open position to the initial position, the third return spring pushes the knife-retracting rocker rod to abut the third stop pile, the first convex portion abuts against the lower abutment surface and moves along the lower abutment surface from the top of the second convex portion to the bottom of the second convex portion, and the cover-opening rocker pulls the first hinge shaft and the rocker rod to move downward.

[0007] Another preferred embodiment is that the anti-collision bottle mechanism includes a rocker, a second return spring, a second stop pile, an electromagnet and a second controller for controlling the on and off of the electromagnet; the first hinge shaft is connected to one end of the rocker, and the rocker is connected to the frame pivot through a fifth hinge shaft, the second return spring is fixedly connected to the frame and the upper part of the rocker respectively, the second stop pile is arranged above the rocker, the electromagnet includes an armature arranged at the other end of the rocker and an iron core located above the armature, and the electromagnet is connected to the second controller; when the opening device is in the return state, the second controller controls the electromagnet to be energized, the iron core and the armature are attracted to pull the rocker to rotate around the fifth hinge shaft, and the rocker drives the first hinge shaft and the cover opening swing piece to move downward.

[0008] Specifically, the second controller includes a second limit switch and a second delayed on-off module, the second delayed on-off module has a second power supply input positive terminal, a second power supply input negative terminal, a second switch signal input positive terminal, a second switch signal input negative terminal and a second relay contact group, the second relay contact group includes a second normally open contact, a second normally closed contact and a second common terminal, the second limit switch has a fourth normally open contact and a fourth common terminal, the second power supply input positive terminal and the second normally open contact are respectively connected to the positive pole of the power supply, the second power supply input negative terminal and one pole of the electromagnet are respectively connected to the negative pole of the power supply, the fourth common terminal is connected to the second switch signal input positive terminal, the fourth normally open contact is connected to the second switch signal input negative terminal, and the second common terminal is connected to the other pole of the electromagnet.

[0009] Furthermore, the driving mechanism includes a driving motor, a crank and a connecting rod connected in sequence, the connecting rod is connected to the cover opening swing member and the crank pivot through the second hinge shaft and the third hinge shaft in sequence, and the crank is also connected to the driving shaft of the driving motor.

[0010] Furthermore, the second limit switch is arranged near the crank, the second limit switch has a second spring sheet, and the crank has an intermediate position. When the crank is in the intermediate position, the crank presses the second spring sheet to close the fourth normally open contact; when the crank leaves the intermediate position, the second spring sheet resets to open the fourth normally open contact.

[0011] Furthermore, the opening device also includes a first controller for controlling the operation of the drive motor, the first controller includes a first limit switch, a first delayed on-off module and a trigger switch, the first delayed on-off module has a first power input positive terminal, a first power input negative terminal, a first switch signal input positive terminal, a first switch signal input negative terminal and a first relay contact group, the first relay contact group includes a first normally open contact, a first normally closed contact and a first common terminal, the first limit switch has a first spring, a third normally open contact, a third normally closed contact and a third common terminal, the trigger switch has a fifth normally open contact and a fifth common terminal, the first power input positive terminal, the first normally open contact and the first normally closed contact The three normally closed contacts are respectively connected to the positive pole of the power supply, the negative terminal of the first power input, the first normally closed contact and one pole of the drive motor are respectively connected to the negative pole of the power supply, the fifth common terminal is connected to the positive terminal of the first switch signal input, the fifth normally open contact is connected to the negative terminal of the first switch signal input, the first common terminal is connected to the third normally open contact, and the third common terminal is connected to the other pole of the drive motor; the first limit switch is arranged near the crank, and the crank has a starting position. When the crank is in the starting position, the crank presses the first spring to close the third normally open contact; when the crank leaves the starting position, the first spring resets to close the third normally closed contact.

[0012] Furthermore, the trigger switch has a third spring sheet, and the opening device also includes a trigger mechanism for driving the trigger switch to operate. When the bottleneck abuts against the positioning edge, the trigger mechanism operates and drives the third spring sheet to be pressed down, thereby closing the fifth normally open contact.

[0013] Furthermore, the trigger mechanism includes a trigger member and a first return spring, the trigger member is arranged between the positioning edge and the cover opening swing member, the trigger member has a trigger edge, the trigger member is connected to the frame pivot through a fourth hinge shaft, the first return spring is connected to the upper part of the trigger member, the trigger switch is arranged near the trigger member, the trigger mechanism has a first state and a second state, when the trigger mechanism is in the first state, the trigger edge protrudes above the positioning edge, the first return spring pulls the trigger member, and the third spring piece is located below the trigger member and is in a free state; when the trigger mechanism is in the second state, the trigger member is pressed to rotate downward around the fourth hinge shaft, the first return spring is pulled by the trigger member and stretched, the third spring piece is pressed by the trigger member and is in a depressed state, thereby closing the third normally open contact.

[0014] Furthermore, the trigger mechanism also includes a first stopper for resisting the trigger member. When the trigger mechanism is in the first state, the lower portion of the first stopper contacts the upper portion of the trigger member so that the trigger edge of the trigger member remains protruding above the positioning edge.

[0015] An opening device for an aluminum-plastic composite cap of an injection bottle, the injection bottle having a bottle body, a bottleneck and a plastic cap. The opening device comprises a frame for positioning the bottleneck, a cover-opening swing piece for prying open the plastic cap, a driving mechanism and an anti-collision bottle control mechanism, the frame having a positioning edge for contacting the bottleneck, a first hinge shaft is provided on the cover-opening swing piece, the cover-opening swing piece is pivotally connected to the frame via the first hinge shaft, the first hinge shaft is located above the positioning edge, the cover-opening swing piece is provided with a cover-opening blade edge, the distance between the cover-opening blade edge and the first hinge shaft is greater than the distance between the positioning edge and the first hinge shaft, the driving mechanism is connected to the cover-opening swing piece, the driving mechanism The structure is used to drive the cover-opening pendulum to swing around the first hinge shaft, and the anti-collision bottle control mechanism is used to control the movement of the driving mechanism. The opening device has a bottle-opening state and a return state. When the opening device is in the bottle-opening state, the bottleneck abuts against the positioning edge, and the anti-collision bottle control mechanism controls the driving mechanism to drive the cover-opening pendulum to swing in the direction away from the bottle body and then pry open the plastic cover; when the opening device is in the return state, the bottleneck leaves the positioning edge, and the anti-collision bottle control mechanism controls the driving mechanism to drive the cover-opening pendulum to swing in the direction close to the bottle body.

[0016] Furthermore, the driving mechanism includes a driving motor, a crank and a connecting rod connected in sequence, the connecting rod is connected to the cover opening swing member and the crank pivot through the second hinge shaft and the third hinge shaft in sequence, and the crank is also connected to the driving shaft of the driving motor.

[0017] Furthermore, the crank has a starting position and an intermediate position, and the anti-collision bottle control mechanism includes a limit switch group, a delayed on-off module and a trigger switch group; the delayed on-off module has a power input positive terminal, a power input negative terminal, a switch signal input positive terminal, a switch signal input negative terminal and a relay contact group, and the relay contact group includes a first normally open contact, a first normally closed contact and a first common terminal; the limit switch group includes a starting position limit switch arranged near the starting position of the crank and an intermediate position limit switch arranged near the middle position of the crank, the starting position limit switch has a first spring sheet, a second normally open contact, a second normally closed contact and a second common terminal, and the intermediate position limit switch has a second spring sheet, a third normally open contact, a third normally closed contact and a third common terminal; the trigger switch group includes a starting switch and a return switch, the starting switch has a fourth normally open contact and a fourth common terminal, and the return switch has a fifth normally closed contact and a fifth common terminal; the power input positive terminal, the second normally open contact, the third normally closed contact and the third normally closed contact The closed contact and the fifth normally closed contact are respectively connected to the positive pole of the power supply, the negative terminal of the power input, the third normally open contact and one pole of the drive motor are respectively connected to the negative pole of the power supply, the fourth normally open contact is connected to the positive terminal of the switch signal input, the fourth common terminal is connected to the negative terminal of the switch signal input, the first normally open contact is connected to the third common terminal, the first common terminal is connected to the other pole of the drive motor, the first normally closed contact is connected to the second common terminal, and the second normally closed contact is connected to the fifth common terminal; when the opening device is in the bottle opening state, the fourth normally open contact is closed and the fifth normally closed contact is disconnected; when the opening device is in the return state, the fourth normally open contact is disconnected and the fifth normally closed contact is closed; when the crank is in the starting position, the crank presses the first spring sheet to close the second normally open contact and the third normally closed contact is closed; when the crank is in the middle position, the crank presses the second spring sheet to close the third normally open contact and the second normally closed contact is closed.

[0018] Furthermore, the trigger switch group has a third spring piece, and the opening device also includes a trigger mechanism for driving the trigger switch group to operate. When the bottleneck abuts against the positioning edge, the trigger mechanism operates and drives the third spring piece to be in a depressed state, thereby closing the fourth normally open contact and disconnecting the fifth normally closed contact; when the bottleneck leaves the positioning edge, the trigger mechanism operates, the third spring piece is reset to a free state, thereby disconnecting the fourth normally open contact and closing the fifth normally closed contact.

[0019] Furthermore, the trigger mechanism includes a trigger member and a return spring, the trigger member is arranged between the positioning edge and the cover opening swing member, the trigger member has a trigger edge, the trigger member is connected to the frame pivot through a fourth hinge shaft, the return spring is connected to the upper part of the trigger member, the trigger switch group is arranged near the trigger member, the trigger mechanism has a first state and a second state, when the trigger mechanism is in the first state, the trigger edge protrudes above the positioning edge, the return spring pulls the trigger member, and the third spring piece is located below the trigger member and is in a free state; when the trigger mechanism is in the second state, the trigger member is pressed to rotate downward around the fourth hinge shaft, the return spring is pulled by the trigger member and stretched, and the trigger member drives the third spring piece to be in a depressed state.

[0020] An opening device for an aluminum-plastic composite cover of an injection bottle, the injection bottle having a bottle body, a bottleneck and a plastic cover. The opening device comprises a frame, a cover-opening swing piece for prying open the plastic cover, a driving mechanism and an anti-collision bottle control mechanism, the cover-opening swing piece is provided with a first hinge shaft, the cover-opening swing piece is pivotally connected to the frame through the first hinge shaft, the cover-opening swing piece is provided with a cover-opening blade edge, the driving mechanism is connected to the cover-opening swing piece, the driving mechanism is used to drive the cover-opening swing piece to swing around the axis of the first hinge shaft, and the anti-collision bottle control mechanism is used to control the movement of the driving mechanism.

[0021] The opening device also includes a trigger mechanism for triggering the action of the anti-collision bottle control mechanism, the trigger mechanism includes a trigger member and a reset spring, the trigger member has a trigger edge, the trigger member is connected to the frame pivot through a fourth hinge shaft, and the reset spring is connected to the upper part of the trigger member.

[0022] The opening device has a bottle opening state and a return state. When the opening device is in the bottle opening state, the bottleneck abuts against the trigger edge, and the trigger member triggers the anti-collision bottle control mechanism to control the drive mechanism to drive the cover opening pendulum to swing away from the bottle body and thus pry open the plastic cover; when the opening device is in the return state, the bottleneck leaves the trigger edge, and the trigger member triggers the anti-collision bottle control mechanism to control the drive mechanism to drive the cover opening pendulum to swing toward the direction close to the bottle body.

[0023] The above-mentioned directional words such as front, back, left, right, up, down, etc. are defined in the normal use of the opening device of the aluminum-plastic composite cover of the injection bottle, with reference to Figure 1 , 3 , 4, 8, 12, and 13.

[0024] The scope of the present invention is not limited to the technical solutions formed by a specific combination of the above technical features, but also includes other technical solutions formed by any combination of the above technical features or their equivalent features, such as a technical solution formed by replacing the above features with technical features with similar functions disclosed in this application.

[0025] Due to the application of the above technical scheme, the present invention has the following advantages compared with the prior art: the anti-collision bottle mechanism is adopted so that the cover-opening edge of the cover-opening pendulum can effectively avoid making way and not contact the aluminum cover of the injection bottle when it swings back, thereby ensuring that the aluminum cover is not damaged and allowing the user to use the opening device calmly. Description of the drawings:

[0026] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0027] Figure 1 This is a cross-sectional structural schematic diagram of the opening device of the aluminum-plastic composite cover for injection bottles of Example 1 (the anti-collision bottle mechanism is hidden);

[0028] Figure 2 for Figure 1 Middle A-direction view;

[0029] Figure 3 It is a structural front view of the anti-collision bottle mechanism in the first embodiment;

[0030] Figure 4 This is a schematic diagram of the opening device of the aluminum-plastic composite cover for injection bottles in Example 1 in the bottle opening state (the anti-collision bottle mechanism is hidden);

[0031] Figure 5 It is a schematic diagram of the state of the anti-collision bottle mechanism when the opening device opens the cover;

[0032] Figure 6 It is a schematic diagram of the state of the anti-collision bottle mechanism when the opening device returns to its original position;

[0033] Figure 7 Schematic diagram of the clearance distance of the cover opening edge when the cover is opened and returned by the opening device in Example 1;

[0034] Figure 8 It is a cross-sectional structural schematic diagram of the opening device of the aluminum-plastic composite cover of the injection bottle of the second embodiment;

[0035] Fig. 9 for Figure 8 B-direction view;

[0036] Fig.10 When opening the cover to open the device Figure 8 B-direction view;

[0037] Fig.11This is a circuit connection diagram of the first controller and the second controller of the opening device of Example 2;

[0038] Fig.12 Schematic diagram of the trajectory distance of the cover opening edge in the opening device when opening and returning to the original position in the second embodiment;

[0039] Fig.13 It is a schematic cross-sectional view of the opening device of the aluminum-plastic composite cover of the injection bottle of the third embodiment;

[0040] Fig.14 for Fig.13 C-direction view;

[0041] Fig.15 When opening the cover to open the device Fig.13 C-direction view;

[0042] Fig.16 It is a schematic diagram of the circuit state of the anti-collision bottle control mechanism when the device is in the initial state;

[0043] Fig.17 It is a circuit state diagram of the anti-collision bottle control mechanism when the opening device is in the triggered state;

[0044] Fig.18 It is a schematic diagram of the circuit state of the anti-collision bottle control mechanism when the opening device is in the open cover state;

[0045] Fig.19 It is a circuit state diagram of the anti-collision bottle control mechanism when the crank is in the middle position;

[0046] Fig. 20 It is a schematic diagram of the circuit state of the anti-collision bottle control mechanism when the opening device is in the return state;

[0047] Fig.21 It is a schematic diagram of the circuit state of the anti-collision bottle control mechanism when the opening device is completed to return to its original position;

[0048] Fig. 22 It is a schematic cross-sectional view of the opening device of the aluminum-plastic composite cover of the injection bottle of the fourth embodiment;

[0049] Fig.23 for Fig.13 D-direction view;

[0050] Fig.24 When opening the cover to open the device Fig.23 D-direction view;

[0051] Fig.25 It is a schematic cross-sectional view of the opening device of the aluminum-plastic composite cover of the injection bottle of the fifth embodiment;

[0052] Fig.26It is a top view of the opening device of the aluminum-plastic composite cover of the injection bottle of Example 5;

[0053] Among them: 1. frame; 2. cover opening swing; 3. rocker; 4. second reset spring; 5. second stop; 6. retracting swing; 7. third reset spring; 8. third stop; 9. electromagnet; 10. second limit switch; 11. positioning edge; 12. second delay on-off module; 13. drive motor; 14. crank; 15. connecting rod; 16. second spring; 17. first limit switch; 18. first delay on-off module; 19. trigger switch; 20. first spring; 21. cover opening edge; 22. first convex part; 23. third spring; 24. trigger; 25. first reset spring; 26. first stop; 41. drive motor; 42. crank; 43. connecting rod; 44. first spring; 45. second spring Plate; 46, third spring plate; 47, trigger member; 48, reset spring; 49, stop pile; 50, limit pile; 61, upper abutment surface; 62, lower abutment surface; 63, second convex portion; 100, injection bottle; 101, bottle body; 102, plastic cover; 103, aluminum cover; 104, bottleneck; 105, bottle shoulder; 201, first hinge support shaft; 202, second hinge support shaft; 203, third hinge support shaft; 204, fourth hinge support shaft; 205, fifth hinge support shaft; 206, sixth hinge support shaft; 241, trigger edge; 300, delay on-off module; 301, start position limit switch; 302, intermediate position limit switch; 303, trigger switch group; 304, start switch; 305, return switch; 471, trigger edge. Specific implementation method:

[0054] At present, the common injection bottle 100 Figure 1 As shown, the injection bottle 100 comprises a bottle mouth, a bottle neck 104, a bottle shoulder 105, a bottle body 101, a plastic cover 102, an aluminum cover 103 and a rubber plug. The rubber plug is inserted into the bottle mouth, the aluminum cover 103 is arranged around the outer circumference of the bottle mouth to seal the rubber plug in the bottle mouth, and the plastic cover 102 is covered on the aluminum cover 103 and partially embedded in the aluminum cover 103.

[0055] Embodiment 1:

[0056] like Figures 1 to 7 As shown, the opening device of the aluminum-plastic composite cover of an injection bottle of the present invention comprises a frame 1 for positioning the bottleneck 104, a cover-opening swing piece 2 for prying open the plastic cover 102, a driving mechanism, and an anti-collision bottle mechanism capable of moving the cover-opening swing piece 2 up and down. The anti-collision bottle mechanism comprises a rocker 3, a second return spring 4, a second stop pile 5, a knife-retracting rocker 6, a third return spring 7 and a third stop pile 8.

[0057] In this embodiment, the frame 1 is a frame body surrounded by plates, and a positioning edge 11 is provided on one side wall thereof for contacting with the bottleneck 104. One end of the rocker 3 is pivotally connected to the frame 1 through a fifth hinge shaft 205, and the other end of the rocker 3 is pivotally connected to the first hinge shaft 201 on the lid opening swing member 2. The second return spring 4 is fixedly connected to the frame 1 and the upper part of the rocker 3, respectively, and the second stop pile 5 is arranged above the rocker 3.

[0058] The first hinge shaft 201 is located above the positioning edge 11. The anti-collision bottle mechanism drives the first hinge shaft 201 to drive the cover opening swing piece 2 to move up and down. A cover opening edge 21 is provided on the cover opening swing piece 2. A first convex portion 22 is provided on the side of the cover opening swing piece 2. The distance between the cover opening edge 21 and the first hinge shaft 201 is greater than the distance between the positioning edge 11 and the first hinge shaft 201. The margin between the cover opening edge 21 and the positioning edge 11 is equal to the radius difference e between the aluminum cover 103 and the bottleneck 104.

[0059] The driving mechanism is connected to the cover-opening swing member 2, and drives the cover-opening swing member 2 to swing around the axis of the first hinge support shaft 201. The driving mechanism includes a driving motor 13, a crank 14 and a connecting rod 15 connected in sequence. The connecting rod 15 is pivotally connected to the cover-opening swing member 2 and the crank 14 through the second hinge support shaft 202 and the third hinge support shaft 203 in sequence. The crank 14 is also connected to the driving shaft of the driving motor 13. The second hinge support shaft 202 is connected to the end of the cover-opening swing member 2 away from the first hinge support shaft 201.

[0060] The knife-retracting swing lever 6 is pivotally connected to the frame 1 through the sixth hinge shaft 206. The knife-retracting swing lever 6 has an upper abutting surface 61 and a lower abutting surface 62. The side of the knife-retracting swing lever 6 is provided with a second convex portion 63 that cooperates with the first convex portion 22. The third return spring 7 is arranged on a side close to the lower abutting surface 62 of the knife-retracting swing lever 6. The third stop pile 8 is arranged on a side close to the upper abutting surface 61 of the knife-retracting swing lever 6. The third return spring 7 is used to provide an elastic force to drive the knife-retracting swing lever 6 to abut against the third stop pile 8.

[0061] The opening method of the opening device of the injection bottle aluminum-plastic composite cover described in this embodiment is a force-applying method similar to that of a screwdriver, which is more suitable for the motion trajectory of the plastic cover 102 when opening than the force-applying method of the existing opening device. The opening pendant 2 has an initial position and an opening position, and the crank 14 has a starting position and an intermediate position. Figure 1 As shown, the cover opening ornament 2 is in the initial position, and the crank 14 is in the starting position. Figure 4 As shown, the cover opening ornament 2 is in the open position and the crank 14 is in the middle position.

[0062] like Figures 1 to 3As shown, when the cover opening swing member 2 is in the initial position, the bottleneck 104 of the injection bottle is against the positioning edge 11, and the plastic cover 102 is in the swinging direction of the cover opening edge 21. The second return spring 4 pulls the rocker 3 upward so that the upper part of the rocker 3 contacts the lower part of the second stop pile 5. The third return spring 7 pushes the knife-retracting swing rod 6 to contact the third stop pile 8. The first convex portion 22 is located on the side close to the upper contact surface 61 of the knife-retracting swing rod 6.

[0063] The crank 14 driven by the driving motor 13 rotates, the cover opening swing member 2 swings outward, and the cover opening edge 21 pries up the plastic cover 102. Figure 4 As shown, when the crank 14 rotates half a circle to the middle position, the cover opening swing member 2 reaches the maximum swing angle, that is, reaches the open position, and the knife retracting swing rod 6 rotates downward to separate from the third stopper 8. The first convex portion 22 is located above the second convex portion 63, and the plastic cover 102 is separated from the aluminum cover 103. The crank 14 continues to rotate without stopping, returns to the starting position and stops to wait, so that the opening device completes a bottle opening cycle.

[0064] During the bottle opening cycle of the opening device, the opening device has a bottle opening state and a return state. When the opening device is in the bottle opening state, the driving mechanism drives the cover opening pendant 2 to move from the initial position to the opening position, and the cover opening pendant 2 swings and then pries open the plastic cover 102. When the opening device is in the return state, the driving mechanism drives the cover opening pendant 2 to move from the opening position to the initial position, and the cover opening pendant 2 swings in the direction close to the bottle body 101. The anti-collision bottle mechanism drives the first hinge shaft 201 to move downward, thereby causing the cover opening edge 21 to move downward.

[0065] The following describes the working process of the anti-collision bottle mechanism during the bottle opening cycle of the opening device: Figure 5 As shown, when the opening device opens the bottle, the cover-opening rocker 2 swings in a direction away from the bottle body 101, the first protrusion 22 is located above the upper abutting surface 61, the first protrusion 22 abuts against the upper abutting surface 61 and moves along the upper abutting surface 61 from below the second protrusion 63 to above the second protrusion 63. The cover-opening rocker 2 drives the knife-retracting rocker 6 to rotate away from the third stop 8. In this process, the knife-retracting rocker 13 will not hinder the cover-opening rocker 2 from swinging to open the cover.

[0066] When the cover opening rocker 2 reaches the open position, the first protrusion 22 reaches above the second protrusion 63, and the knife retracting rocker 13 is no longer constrained by the first protrusion 22, and resets and abuts against the third stopper 8 under the push of the elastic restoring force of the third reset spring 7. In this way, the first protrusion 22 is located below the lower abutment surface 62.

[0067] like Figure 6As shown, when the opening device returns to its original position, the first protrusion 22 abuts against the lower abutment surface 62 and moves along the lower abutment surface 62 from above the second protrusion 63 to below the second protrusion 63, and the knife-retracting swing rod 13 is blocked by the third stop pile 8, forcing the cover-opening swing member 2 pivotally connected to the rocker 3 to move downward while swinging back, and the cover-opening swing member 2 pulls the first hinge shaft 201 and the rocker 3 to move downward. The cover-opening blade edge 21 is away from the surface of the aluminum cover 103.

[0068] like Figure 7 As shown in the figure, the dotted line in the figure shows the position of the cover opening swing member 2 after swinging back when there is no anti-collision bottle mechanism. Compared with the actual position drawn by the solid line, the difference in the knife retreat distance is h, so the swinging cover opening edge 21 will not touch the surface of the aluminum cover 103, which is conducive to more reliable protection of the aluminum cover 103. When the cover opening swing member 2 ends its return stroke, the first protrusion 22 leaves the lower end of the second protrusion 63 and is pulled back to its original position by the second return spring 4, returning to the original position. Figure 3 The status is on standby.

[0069] Embodiment 2:

[0070] like Figures 8 to 12 As shown, this embodiment improves the anti-collision bottle mechanism on the basis of the first embodiment, and adds a first controller and a trigger mechanism. The anti-collision bottle mechanism includes a rocker 3, a second return spring 4, a second stop 5, an electromagnet 9, and a second controller for controlling the on and off of the electromagnet 9.

[0071] The first hinge shaft 201 on the cover opening swing member 2 is pivotally connected to one end of the rocking lever 3, and the rocking lever 3 is pivotally connected to the middle part of the frame 1 through the fifth hinge shaft 205. The second return spring 4 is fixedly connected to the frame 1 and the upper part of the rocking lever 3 respectively. The second stop pile 5 is arranged above the rocking lever 3. The electromagnet 9 includes an armature (not shown) arranged at the other end of the rocking lever 3 and an iron core (not shown) located above the armature. The electromagnet 9 is connected to the second controller.

[0072] like Fig.11As shown, the first controller is used to control the operation of the drive motor 13. The first controller includes a first limit switch 17, a first delay on-off module 18 and a trigger switch 19. The first delay on-off module 18 has a first power input positive terminal P1+, a first power input negative terminal P1-, a first switch signal input positive terminal S1+, a first switch signal input negative terminal S1- and a first relay contact group. The first delay on-off module 18 can delay connecting its relay coil power supply circuit after receiving the triggered switch signal and then delay disconnecting its relay coil power supply circuit, and the timing duration of these two delay periods can be adjusted and set as needed. The first relay contact group includes a first normally open contact NO1, a first normally closed contact NC1 and a first common terminal COM1. The first limit switch 17 has a first spring 20, a third normally open contact NO3, a third normally closed contact NC3 and a third common terminal COM3. The trigger switch 19 has a third spring 23, a fifth normally open contact NO5 and a fifth common terminal COM5.

[0073] The first power input positive terminal P1+, the first normally open contact NO1 and the third normally closed contact NC3 are respectively connected to the positive electrode of the power supply. The first power input negative terminal P1-, the first normally closed contact NC1 and one pole of the drive motor 13 are respectively connected to the negative electrode of the power supply. The fifth common terminal COM5 is connected to the first switch signal input positive terminal S1+, the fifth normally open contact NO5 is connected to the first switch signal input negative terminal S1-, the first common terminal COM1 is connected to the third normally open contact NO3, and the third common terminal COM3 is connected to the other pole of the drive motor 13.

[0074] The second controller includes a second limit switch 10 and a second delay on-off module 12. The second delay on-off module 12 has a second power input positive terminal P2+, a second power input negative terminal P2-, a second switch signal input positive terminal S2+, a second switch signal input negative terminal S2- and a second relay contact group. The second delay on-off module 12 can delay connecting its relay coil power supply circuit after receiving the triggered switch signal and then delay disconnecting its relay coil power supply circuit, and the timing duration of these two delay periods can be adjusted and set as needed. The second relay contact group includes a second normally open contact NO2, a second normally closed contact NC2 and a second common terminal COM2. The second limit switch 10 has a second spring 16, a fourth normally open contact NO4 and a fourth common terminal COM4.

[0075] The second power input positive terminal P2+ and the second normally open contact NO2 are respectively connected to the positive pole of the power supply. The second power input negative terminal P2- and one pole of the electromagnet 9 are respectively connected to the negative pole of the power supply. The fourth common terminal COM4 is connected to the second switch signal input positive terminal S2+, the fourth normally open contact NO4 is connected to the second switch signal input negative terminal S2-, and the second common terminal COM2 is connected to the other pole of the electromagnet 9.

[0076] The first limit switch 17 is disposed near the crank 14. When the crank 14 is at the starting position, the crank 14 presses the first elastic sheet 20 to close the third normally open contact NO3; when the crank 14 leaves the starting position, the first elastic sheet 20 resets to close the third normally closed contact NC3.

[0077] The trigger mechanism includes a trigger member 24, a first return spring 25, and a first stopper 26 for resisting the trigger member 24. The trigger member 24 is arranged between the positioning edge 11 and the cover opening swing member 2. In this embodiment, the trigger member 9 is in a straight bar shape, and the upper part of the trigger member 24 has a trigger edge 241. One end of the trigger member 24 is pivotally connected to the frame 1 through the fourth hinge shaft 204, and the first return spring 25 is connected to the upper part of the other end of the trigger member 24. The first stopper 26 is arranged near the first return spring 25 and above the trigger member 9. The trigger switch 19 is arranged near the trigger member 24.

[0078] The trigger mechanism has a first state and a second state. When the trigger mechanism is in the first state, the trigger edge 241 protrudes above the positioning edge 11, the first reset spring 25 pulls the trigger member 24, and the lower part of the first stop 26 contacts the upper part of the trigger member 24 so that the trigger edge 241 of the trigger member 24 remains protruding above the positioning edge 11, and the first reset spring 25 is in a stretched state. The third elastic sheet 23 is located below the trigger member 24 and is in a free state. When the trigger mechanism is in the second state, the trigger member 24 is pressed to rotate downward around the fourth hinge shaft 204, and the first reset spring 25 is pulled by the trigger member 24 and extends. The third elastic sheet 23 is pressed by the trigger member 24 and is in a depressed state, thereby closing the third normally open contact NO3.

[0079] In this embodiment, when opening the injection bottle, the bottleneck 104 of the injection bottle to be opened is placed against the positioning edge 11, and the bottleneck 104 of the injection bottle presses down the trigger member 24 to put the trigger mechanism in the second state, and then the trigger member 24 presses down the third spring sheet 23 to close the fifth normally open contact NO5. In this way, the automatic opening action of the cover opening ornament 2 can be realized.

[0080] The second limit switch 10 is also arranged near the crank 14. When the crank 14 is in the middle position, the crank 14 presses the second elastic sheet 16 to close the fourth normally open contact NO4; when the crank 14 leaves the middle position, the second elastic sheet 16 resets to open the fourth normally open contact NO4.

[0081] The process of opening the injection bottle 100 by the opening device of this embodiment is as follows: Figure 8 and Fig. 9 As shown, the opening device is in an initial state, the crank 14 is in a starting position, the first spring 20 of the first limit switch 17 is pressed down by the crank 14 to close the third normally open contact NO3 of the first limit switch 17, and the drive motor is powered off.

[0082] When opening the injection bottle 100, the bottleneck 104 of the injection bottle 100 to be opened is placed against the positioning edge 11, the cylindrical surface of the aluminum cover 103 touches the cover opening edge 21, and the plastic cover 102 is in the swinging direction of the cover opening edge 21. The bottleneck 104 presses down the trigger 24, see Fig.10, the third spring piece 23 of the trigger switch 19 is pressed down, the fifth normally open contact NO5 is closed and sends a switch signal, the first delay on-off module 18 receives the trigger signal and starts the delayed power-on timing, delays the connection of its relay coil, and allows the operator to stabilize the holding state. When the delayed power-on timing ends, the relay coil of the first delay on-off module 18 is immediately energized to close the first normally open contact NO1, so that the drive motor 13 obtains power from the path formed by the first normally open contact NO1 and the third normally open contact NO3, drives the crank 14 to rotate away from the starting position, the crank 4 releases the pressure on the first spring piece 20, the first spring piece 20 bounces up, the third normally open contact NO3 of the first limit switch 17 is disconnected, and the third normally closed contact NC3 is closed. In this way, the drive motor 13 continues to obtain power from the path formed by the third normally closed contact NC3, the drive motor 13 continues to be energized, the drive motor 13 continues to drive the crank 14 to rotate, and the crank 14 drives the cover opening ornament 2 from the initial position to the open position and then returns to the initial position. When the drive motor 13 drives the crank 14 to rotate back to the starting position, the crank 14 presses down the first spring piece 20 of the first limit switch 17 again to close the third normally open contact NO3 of the first limit switch 17. During this period, the first delay on-off module 18 starts the power-off timing at the same time as the delay power-on timing ends. Before the third normally open contact NO3 is closed again, the power-off timing of the first delay on-off module 18 has ended, and the relay coil of the first delay on-off module 18 is immediately de-energized to disconnect the first normally open contact NO1 and close the first normally closed contact NC1. In this way, the power supply circuit of the drive motor 13 is completely disconnected, and its two poles are short-circuited through COM3, NO3, COM1 and NC1, the drive motor 13 is de-energized and braked, and the opening device completes a complete cycle of opening a bottle.

[0083] When the cover opening pendant 2 moves from the initial position to the open position, the crank 14 reaches the middle position, the crank 14 presses the second spring 16 of the second limit switch 10 to close the fourth normally open contact NO4, the second limit switch 10 sends a trigger signal, the delay power-on timing of the second delay on-off module 12 is set to zero, and its relay coil is immediately connected after receiving the trigger signal, the electromagnet 9 is energized, the iron core and the armature are attracted to pull the rocker 3 to rotate around the fifth hinge shaft 205, and the rocker 3 drives the first hinge shaft 201 and the cover opening pendant 2 to move downward. In this way, the cover opening pendant 2 pivotally connected to the rocker 3 generates a knife-retracting movement away from the surface of the aluminum cover 103 when it returns to its original position. Fig.12The track S1 in the figure is the swing-out track of the cover-opening edge 21, while the track S2 is the return track of the cover-opening edge 21. The distance between the two arcs is the retraction distance. When the crank 14 drives the cover-opening swing member 2 back to the initial position, the power-off delay of the second delay on-off module 12 ends, the electromagnet 9 loses power, and the rocker 3 is pulled back to its original position by the second spring 4. In this way, the swinging cover-opening edge 21 does not touch the surface of the aluminum cover 103, and this embodiment can protect the aluminum cover 103 more reliably. A noise-reducing buffer washer can be set between the armature and the iron core of the electromagnet 9 to make the suction noise very small.

[0084] Embodiment three:

[0085] like Figures 13 to 21 As shown, an opening device for an aluminum-plastic composite cover of an injection bottle includes a frame 1 for positioning a bottleneck 104, a cover-opening pendant 2 for prying open the plastic cover 102, a driving mechanism and an anti-collision bottle control mechanism.

[0086] The frame 1 has a positioning edge 11 for contacting with the bottleneck 104 of the bottle body 101. The bottleneck 104 is placed above the positioning edge 11. The cover opening pendant 2 is pivotally connected to the frame 1 through the first hinge shaft 201 thereon, and the first hinge shaft 201 is located above the positioning edge 11. The cover opening pendant 2 is provided with a cover opening blade 21, and the distance between the cover opening blade 21 and the first hinge shaft 201 is greater than the distance between the positioning edge 11 and the first hinge shaft 201. The driving mechanism is connected to the cover opening pendant 2. The driving mechanism is used to drive the cover opening pendant 2 to swing around the axis of the first hinge shaft 201, and the anti-collision bottle control mechanism is used to control the movement of the driving mechanism.

[0087] The driving mechanism includes a driving motor 41, a crank 42 and a connecting rod 43 connected in sequence. The connecting rod 43 is pivotally connected to the cover opening swing member 2 and the crank 42 through the second hinge shaft 202 and the third hinge shaft 203 in sequence. The crank 42 is also connected to the driving shaft of the driving motor 41.

[0088] The anti-collision bottle control mechanism includes a limit switch group, a delay on-off module 300 and a trigger switch group 303. The delay on-off module 300 has a power input positive terminal P+, a power input negative terminal P-, a switch signal input positive terminal S+, a switch signal input negative terminal S- and a relay contact group. The delay on-off module 300 can delay connecting its relay coil power supply circuit after receiving the triggered switch signal and then delay disconnecting its relay coil power supply circuit, and the timing duration of these two delay periods can be adjusted and set as needed. The relay contact group includes a first normally open contact NO1, a first normally closed contact NC1 and a first common terminal COM1. The limit switch group includes a starting position limit switch 301 set near the starting position of the crank 42 and an intermediate position limit switch 302 set near the middle position of the crank 42. The starting position limit switch 301 has a first spring 44, a second normally open contact NO2, a second normally closed contact NC2 and a second common terminal COM2. The intermediate position limit switch 302 has a second spring 45, a third normally open contact NO3, a third normally closed contact NC3 and a third common terminal COM3. The trigger switch group 303 includes a start switch 304, a return switch 305 and a third spring 46 shared by the start switch 304 and the return switch 305. The start switch 304 has a fourth normally open contact NO4 and a fourth common terminal COM4. The return switch 305 has a fifth normally closed contact NC5 and a fifth common terminal COM5. The power input positive terminal P+, the second normally open contact MO2, the third normally closed contact NC3 and the fifth normally closed contact NC5 are respectively connected to the positive pole of the power supply. The power input negative terminal S-, the third normally open contact NO3 and one pole of the drive motor 41 are respectively connected to the negative pole of the power supply. The fourth normally open contact NO4 is connected to the switch signal input positive terminal S+. The fourth common terminal COM4 is connected to the switch signal input negative terminal P-. The first normally open contact NO1 is connected to the third common terminal COM3. The first common terminal COM1 is connected to the other pole of the driving motor 41 , the first normally closed contact NC1 is connected to the second common terminal COM2 , and the second normally closed contact NC2 is connected to the fifth common terminal COM5 .

[0089] The opening device has a bottle opening state and a return state. When the opening device is in the bottle opening state, the bottleneck 104 abuts against the positioning edge 11, and the anti-collision bottle control mechanism controls the driving mechanism to drive the cover opening ornament 2 to swing away from the bottle body 101 and then pry open the plastic cover 102; when the opening device is in the return state, the bottleneck 104 leaves the positioning edge 11, and the anti-collision bottle control mechanism controls the driving mechanism to drive the cover opening ornament 2 to swing toward the direction close to the bottle body 101.

[0090] The opening device further includes a trigger mechanism for driving the trigger switch group 303 to operate. The trigger mechanism includes a trigger member 47, a reset spring 48, and a stopper 49 for resisting the trigger member 47. The trigger member 47 is arranged between the positioning edge 11 and the cover opening swing member 2. The trigger member 9 is in a straight bar shape, and the upper part of the trigger member 47 has a trigger edge 471. One end of the trigger member 47 is pivotally connected to the frame 1 through the fourth hinge shaft 204, and the reset spring 48 is connected to the upper part of the other end of the trigger member 47. The stopper 49 is arranged near the reset spring 48 and above the trigger member 47. The trigger switch group 303 is arranged near the trigger member 47. The trigger mechanism has a first state and a second state. When the trigger mechanism is in the first state, the trigger edge 471 protrudes above the positioning edge 11, the reset spring 48 pulls the trigger member 47, and the lower part of the stopper 49 resists and contacts the upper part of the trigger member 47. The third elastic sheet 46 is located below the trigger member 47 and is in a free state. When the trigger mechanism is in the second state, the trigger member 47 is pressed to rotate downward around the fourth hinge shaft 204, and the return spring 48 is pulled by the trigger member 47 to extend, and the trigger member 47 drives the third elastic sheet 46 to be in a pressed state, so that the fourth normally open contact of the start switch 304 is closed.

[0091] The process of opening the injection bottle 100 by the opening device of this embodiment is as follows: Fig.16 As shown, the opening device is in the initial state, the cover opening pendant 2 is in the initial position, the crank 42 is in the starting position, the first spring 44 of the starting position limit switch 301 is pressed down by the crank 42 to close the second normally open contact NO2 of the starting position limit switch 301, and the drive motor 13 is powered off. The first normally closed contact of the delay on-off module 300 is closed, and the middle position limit switch 302 is not pressed to close the third normally closed contact. At this time, no injection bottle presses the trigger member 47, the trigger mechanism is in the first state, the start switch 304 is disconnected, and the return switch 305 is closed.

[0092] like Fig.17 As shown, the opening device is in the trigger state, and the bottleneck 104 of the injection bottle 100 to be opened is placed on the positioning edge 11. The bottleneck 104 presses the trigger member 47 to rotate downward, and the third spring piece 46 is compressed accordingly, so that the trigger mechanism is in the second state, the fourth normally open contact NO4 is closed, and the fifth normally closed contact NC5 is disconnected, and a trigger signal is sent to the delay on-off module 300. The delay on-off module 300 receives the trigger signal and starts the delay power-on timing.

[0093] like Fig.18As shown, the opening device is in the bottle opening state, the crank 42 moves from the starting position to the middle position, the delayed power-on timing of the delayed on-off module 300 ends and the delayed power-off timing starts, its relay is immediately energized, the first normally open contact is closed, and the drive motor 13 is powered from the power supply bypass provided by the middle position limit switch 302 to rotate the crank 42 to the middle position to open the plastic cover 102. When the crank 42 rotates away from the starting position, the pressure on the first spring 44 of the starting position limit switch 301 is released, and then the second normally closed contact NC2 is closed.

[0094] like Fig.19 As shown, the crank 42 reaches the middle position, and the crank presses the second spring 45 of the middle position limit switch 302 to close the third normally open contact and then drive the motor 13 to cut off the power, and the crank 42 stops at the middle position. At the same time, the delayed power-off timing of the delayed on-off module 300 also ends, and its relay is immediately de-energized and the first normally closed contact is closed. In this state, as long as the injection bottle 100 is not removed from the positioning edge 11, the crank 42 will remain in the middle position, and then the cover opening ornament 2 will also remain in the open position.

[0095] like Fig. 20 As shown, the opening device is in the return state. At this time, the injection bottle 100 with the plastic cover 102 removed is evacuated from the positioning edge 11, thereby releasing the pressure on the trigger member 47, and the third spring 46 is decompressed, so that the fourth normally open contact NO4 is disconnected, the fifth normally closed contact NC5 is closed, and the second normally closed contact NC2 is closed, and the drive motor 13 is energized from the power supply bypass provided by the starting position limit switch 301 to rotate the crank 42 to the starting position.

[0096] like Fig.21 As shown, the crank 42 returns to the starting position, the cover opening pendant 2 returns to the initial position, the crank 42 re-presses the first spring piece 44 of the starting position limit switch 301 to close the second normally open contact NO2, the drive motor 13 is powered off, the crank 42 stays at the starting position, and the cover opening pendant 2 stays at the initial position. As can be seen from the above, the cover opening pendant 2 cannot touch the evacuated injection bottle 100 at all during the return process. The anti-collision bottle control mechanism of this embodiment can not only protect the aluminum cover more reliably, but also provide a more relaxed operating experience for users who operate by hand.

[0097] Embodiment 4: Figures 22 to 24As shown, on the basis of the third embodiment, the positioning edge 11 is no longer provided on the frame 1, but the trigger edge 471 on the trigger member 47 is used as the positioning edge for opening the bottle neck 104, that is, the trigger edge 471 is used to contact the bottle neck 104 of the injection bottle 100. In addition, the trigger edge 471 and the cover opening edge 21 are distinguished by eye-catching colors, which not only simplifies the structure of the opening device, but also significantly improves the operating experience, and facilitates the operator to identify and judge the position of the bottle neck 104.

[0098] Embodiment 5: Fig.25 and Fig.26 As shown, on the basis of the fourth embodiment, the position of the trigger mechanism is adjusted. Specifically, the fourth hinge shaft 204 is set to be parallel to the first hinge shaft 201, and a limit pile 50 is additionally provided. The reset spring 48 is arranged on the upper part of the trigger member 47 and connected to the trigger member 47. The stop pile 49 is arranged near the reset spring 48 and above the trigger member 47, and the limit pile 50 is arranged below the trigger member 47. In this way, when the bottleneck 104 of the injection bottle abuts against the trigger edge 471 to apply force downward, the trigger member 47 rotates downward around the axis of the fourth hinge shaft 204, and the trigger edge 471 can maintain a horizontal posture during the downward movement, which changes the situation in the third embodiment that the trigger edge 471 is high at one end and low at the other end during the downward movement, and is more conducive to improving the stability of opening the injection bottle.

[0099] As mentioned above, we have described the invention in full accordance with the purpose of the invention, but the invention is not limited to the above embodiments and implementation methods. Practitioners in the relevant technical field can make different changes and implementations within the scope permitted by the technical concept of the invention.

Claims

1. An opening device for an aluminum-plastic composite cover of an injection bottle, the injection bottle (100) comprising a bottle body (101), a bottleneck (104) and a plastic cover (102), characterized in that: The opening device comprises a frame (1) for positioning the bottleneck (104), a cover-opening pendant (2) for prying open the plastic cover (102), a driving mechanism and an anti-collision bottle mechanism, wherein the frame (1) has a positioning edge (11) for contacting the bottleneck (104), a first hinge shaft (201) is provided on the cover-opening pendant (2), the first hinge shaft (201) is connected to the anti-collision bottle mechanism, and the first hinge shaft (201) is located above the positioning edge (11), the anti-collision bottle mechanism drives the first hinge shaft (201) to drive the cover-opening pendant (2) to move up and down, and the cover-opening pendant (2) is provided with an opening The cover blade edge (21) is connected to the cover opening swing piece (2), and the driving mechanism is used to drive the cover opening swing piece (2) to swing around the axis of the first hinge support shaft (201). The opening device has a bottle opening state and a return state. When the opening device is in the bottle opening state, the driving mechanism drives the cover opening swing piece (2) to swing in a direction away from the bottle body (101) so as to pry open the plastic cover (102); when the opening device is in the return state, the driving mechanism drives the cover opening swing piece (2) to swing in a direction close to the bottle body (101), and the anti-collision bottle mechanism drives the first hinge support shaft (201) to move downward so as to cause the cover opening blade edge (21) to move downward; The margin between the cover opening edge (21) and the positioning edge (11) is equal to the radius difference between the aluminum cover (103) and the bottleneck (104).

2. The opening device for the aluminum-plastic composite cover of an injection bottle according to claim 1, characterized in that: The side of the cover opening swing member (2) is provided with a first convex portion (22); the anti-collision bottle mechanism comprises a rocker (3), a second return spring (4), a second stop pile (5), a knife-retracting swing rod (6), a third return spring (7) and a third stop pile (8); the first hinge support shaft (201) is pivotally connected to the rocker (3); the rocker (3) is pivotally connected to the frame (1) through a fifth hinge support shaft (205); the second return spring (4) is fixedly connected to the frame (1) and the upper part of the rocker (3) respectively; the second stop pile (5) is arranged above the rocker (3); the knife-retracting swing rod (6) is pivotally connected to the frame (1) through a sixth hinge support shaft (206); the knife-retracting swing rod (6) has an upper abutment surface (61) and a lower abutment surface (62); the side of the knife-retracting swing rod (6) is provided with a second convex portion (63) cooperating with the first convex portion (22); the third return spring (7) is arranged The third stop pile (8) is arranged on a side close to the lower abutment surface (62) of the knife-retracting rocker (6), and the third return spring (7) is used to provide an elastic force for driving the knife-retracting rocker (6) to abut against the third stop pile (8); the cover-opening rocker (2) has an initial position and an open position. When the cover-opening rocker (2) is in the initial position, the second return spring (4) pulls the rocker (3) upward so that the upper part of the rocker (3) abuts against the lower part of the second stop pile (5), and the third return spring (7) pushes the knife-retracting rocker (6) to abut against the third stop pile (8), and the first convex portion (22) is located on a side close to the upper abutment surface (61) of the knife-retracting rocker (6); when the cover-opening rocker (2) is in the open position, the knife-retracting rocker (6) rotates downward to separate from the third stop pile (8), and the first convex portion (22) is located above the second convex portion (63).

3. The opening device for the aluminum-plastic composite cover of an injection bottle according to claim 2, characterized in that: When the opening device opens the cover, the driving mechanism drives the cover-opening rocker (2) to move from the initial position to the opening position, the first protrusion (22) abuts against the upper abutment surface (61) and moves along the upper abutment surface (61) from below the second protrusion (63) to above the second protrusion (63), and the cover-opening rocker (2) drives the knife-retracting swing rod (6) to rotate away from the third stop pile (8); when the opening device returns to its original position, the driving mechanism drives the cover-opening rocker (2) to move from the opening position to the initial position, the third return spring (7) pushes the knife-retracting swing rod (6) to abut against the third stop pile (8), the first protrusion (22) abuts against the lower abutment surface (62) and moves along the lower abutment surface (62) from above the second protrusion (63) to below the second protrusion (63), and the cover-opening rocker (2) pulls the first hinge support shaft (201) and the rocker (3) to move downward.

4. The opening device for the aluminum-plastic composite cover of an injection bottle according to claim 1, characterized in that: The anti-collision bottle mechanism comprises a rocking arm (3), a second return spring (4), a second stop pile (5), an electromagnet (9), and a second controller for controlling the on and off of the electromagnet (9); the first hinge shaft (201) is connected to one end of the rocking arm (3), the rocking arm (3) is pivotally connected to the frame (1) through a fifth hinge shaft (205), the second return spring (4) is fixedly connected to the frame (1) and the upper part of the rocking arm (3), the second stop pile (5) is arranged above the rocking arm (3), the electromagnet (9) comprises an armature arranged at the other end of the rocking arm (3) and an iron core located above the armature, and the electromagnet (9) is connected to the second controller; when the opening device is in a return state, the second controller controls the electromagnet (9) to be energized, the iron core and the armature are attracted to pull the rocking arm (3) to rotate around the fifth hinge shaft (205), and the rocking arm (3) drives the first hinge shaft (201) and the cover opening swing member (2) to move downward.

5. The opening device for the aluminum-plastic composite cover of an injection bottle according to claim 4, characterized in that: The second controller comprises a second limit switch (10) and a second delay on-off module (12), the second delay on-off module (12) having a second power input positive terminal, a second power input negative terminal, a second switch signal input positive terminal, a second switch signal input negative terminal and a second relay contact group, the second relay contact group comprising a second normally open contact, a second normally closed contact and a second common terminal, the second limit switch (10) having a fourth normally open contact and a fourth common terminal, the second power input positive terminal and the second normally open contact are respectively connected to the positive pole of the power supply, the second power input negative terminal and one pole of the electromagnet (9) are respectively connected to the negative pole of the power supply, the fourth common terminal is connected to the second switch signal input positive terminal, the fourth normally open contact is connected to the second switch signal input negative terminal, and the second common terminal is connected to the other pole of the electromagnet (9).

6. The opening device for the aluminum-plastic composite cover of an injection bottle according to claim 5, characterized in that: The driving mechanism comprises a driving motor (13), a crank (14) and a connecting rod (15) which are connected in sequence; the connecting rod (15) is pivotally connected to the cover opening ornament (2) and the crank (14) through a second hinge shaft (202) and a third hinge shaft (203) in sequence; and the crank (14) is also connected to the driving shaft of the driving motor (13).

7. The opening device for the aluminum-plastic composite cap of an injection bottle according to claim 6, characterized in that: The second limit switch (10) is arranged near the crank (14), the second limit switch (10) has a second spring sheet (16), the crank (14) has an intermediate position, when the crank (14) is in the intermediate position, the crank (14) presses the second spring sheet (16) to close the fourth normally open contact; when the crank (14) leaves the intermediate position, the second spring sheet (16) is reset to open the fourth normally open contact.

8. The opening device for the aluminum-plastic composite cover of an injection bottle according to claim 7, characterized in that: The opening device further comprises a first controller for controlling the operation of the drive motor (13), the first controller comprising a first limit switch (17), a first delay on-off module (18) and a trigger switch (19), the first delay on-off module (18) comprising a first power input positive terminal, a first power input negative terminal, a first switch signal input positive terminal, a first switch signal input negative terminal and a first relay contact group, the first relay contact group comprising a first normally open contact, a first normally closed contact and a first common terminal, the first limit switch (17) comprising a first spring sheet (20), a third normally open contact, The trigger switch (19) has a fifth normally open contact and a fifth common terminal, the first power input positive terminal, the first normally open contact and the third normally closed contact are respectively connected to the positive electrode of the power supply, the first power input negative terminal, the first normally closed contact and one pole of the drive motor (13) are respectively connected to the negative electrode of the power supply, the fifth common terminal is connected to the first switch signal input positive terminal, the fifth normally open contact is connected to the first switch signal input negative terminal, the first common terminal is connected to the third normally open contact, and the third common terminal is connected to the other pole of the drive motor (13); the first limit switch (17) is arranged near the crank (14), the crank (14) has a starting position, when the crank (14) is in the starting position, the crank (14) presses the first spring sheet (20) to close the third normally open contact; when the crank (14) leaves the starting position, the first spring sheet (20) is reset to close the third normally closed contact.

9. The opening device for the aluminum-plastic composite cover of an injection bottle according to claim 8, characterized in that: The trigger switch (19) has a third spring sheet (23), and the opening device further comprises a trigger mechanism for driving the trigger switch (19) to operate; when the bottleneck (104) abuts against the positioning edge (11), the trigger mechanism operates and drives the third spring sheet (23) to be pressed down, thereby closing the fifth normally open contact.

10. The opening device for the aluminum-plastic composite cap of an injection bottle according to claim 9, characterized in that: The trigger mechanism comprises a trigger member (24) and a first return spring (25); the trigger member (24) is arranged between the positioning edge (11) and the cover opening swing member (2); the trigger member (24) has a trigger edge (241); the trigger member (24) is pivotally connected to the frame (1) via a fourth hinge shaft (204); the first return spring (25) is connected to the upper part of the trigger member (24); the trigger switch (19) is arranged near the trigger member (24); the trigger mechanism has a first state and a second state; when the trigger mechanism is in In the first state, the trigger edge (241) protrudes above the positioning edge (11), the first return spring (25) holds the trigger member (24), and the third spring sheet (23) is located below the trigger member (24) and is in a free state; when the trigger mechanism is in the second state, the trigger member (24) is pressed to rotate downward around the fourth hinge shaft (204), the first return spring (25) is pulled by the trigger member (24) to extend, and the third spring sheet (23) is pressed by the trigger member (24) to be in a depressed state, thereby closing the third normally open contact.

11. The opening device for the aluminum-plastic composite cover of an injection bottle according to claim 10, characterized in that: The trigger mechanism further comprises a first stopper (26) for abutting against the trigger member (24); when the trigger mechanism is in a first state, the lower portion of the first stopper (26) abuts against the upper portion of the trigger member (24) so ​​that the trigger edge (241) of the trigger member (24) remains protruding above the positioning edge (11).

Images