Constant-torque cap screwing mechanism of bottle cap screwing machine

Abstract

The utility model relates to the technical field of bottle cap screwing machines, in particular to a constant-torque cap screwing mechanism of a bottle cap screwing machine, which comprises an upper supporting seat, a lower supporting seat and a mounting base, a cap screwing driving mechanism is arranged above the mounting base, an auxiliary cap screwing mechanism is arranged on the side edge of the cap screwing driving mechanism, and the lower supporting seat is arranged on the mounting base. When the constant-torque cap screwing mechanism of the bottle cap screwing machine is used, the cap screwing disc is arranged in the cap screwing shell to abut against and support a bottle cap, and meanwhile, a damping structure is matched to buffer and support the cap screwing disc; according to the cap screwing device, the position of a bottle cap can be automatically corrected when the bottle cap is pressed into the cap screwing shell, a special abutting mechanism does not need to be used for abutting against the bottle cap, meanwhile, the cap screwing shell is detachably designed in cooperation with transmission of the mechanism, the cap screwing shell with the proper size can be selected according to the size of the screwed bottle cap, and the cap screwing efficiency is improved. The overall structural design is ingenious, and use flexibility is good.

Description

Technical Field

[0001] The utility model relates to the technical field of bottle cap screwing machines, in particular to a constant torque screwing mechanism of the bottle cap screwing machine. Background Art

[0002] The bottle capping machine is a device used to automatically or semi-automatically tighten bottle caps. It is widely used in beverage, food, cosmetics and pharmaceutical industries. It can improve production efficiency and maintain the sealing inside the bottle;

[0003] Patent announcement number "CN209740655U" discloses a "capping mechanism". The device fixes the bottle directly under the capping cover by means of a left clamping block and a right clamping block, operates the electric push rod to wrap the capping cover around the bottle cap, then operates the small motor and the electric push rod in the opposite direction to separate the bottle cap from the bottle. The user turns off the small motor and the electric push rod, and then presses the pressure rod downward to remove the bottle cap from the capping cover. This design solves the problems of wasting time on manual capping and difficulty in opening the cap. The capping shell built into the existing capping machine needs to be equipped with a special resistance mechanism to resist and support the bottle cap in actual use before the subsequent capping process can be carried out. In addition, the existing capping shell is fixedly installed, and its capping capacity is limited. However, the above device has not made any improvements to this problem, and its overall flexibility of use is poor. Utility Model Content

[0004] The purpose of the present utility model is to solve the above-mentioned problem and propose a constant torque capping mechanism for a bottle capping machine, which improves the problem that the built-in capping shell of the existing capping machine needs to be equipped with a special resistance mechanism to resist and support the bottle cap in actual use before the subsequent capping process can be carried out, and the existing capping shell is fixedly installed, and the bottle cap it screws on has limitations.

[0005] A constant torque capping mechanism for a bottle capping machine, comprising an upper support seat, a lower support seat and a mounting base: a mounting base is provided between the upper and lower support seats, a capping drive mechanism is provided above the mounting base, an auxiliary capping mechanism is provided on the side of the capping drive mechanism, and a resistance buffer mechanism is provided above the upper support seat;

[0006] The rotary cover driving mechanism includes a servo motor, a positioning support seat and a rotary cover shell body. The top outer wall of the mounting base is provided with a servo motor, the output end of the servo motor is connected to the top outer wall of the positioning support seat, and the bottom outer wall of the positioning support seat is fitted with the rotary cover shell body.

[0007] Preferably, the auxiliary rotating cover mechanism includes a limit shaft, a support ring and a resistance spring. The limit shaft is symmetrically connected between the upper support seat and the lower support seat. The support ring is slidably installed on the outside of the limit shaft, and a resistance spring is connected between the support ring and the top outer wall of the lower support seat, and the resistance spring is sleeved on the outside of the limit shaft.

[0008] Preferably, a driving motor is installed on the top outer wall of the upper support seat, the output end of the driving motor is connected to the top outer wall of the transmission shaft, the bottom outer wall of the transmission shaft is rotatably installed with the top outer wall of the lower support seat, and a bidirectional thread groove is provided on the side outer wall of the transmission shaft, and the mounting base is arranged through the outside of the limiting shaft and the transmission shaft.

[0009] Preferably, the top outer wall of the rotary cover shell body is provided with an interference block, and the bottom outer wall of the positioning support seat is correspondingly provided with an interference slot, and the interference block and the interference slot are engaged with each other.

[0010] Preferably, a first thread groove is provided through the side outer wall of the positioning support seat at the position of the interference slot, and a second thread groove is provided correspondingly on the side outer wall of the interference block, and the first thread groove and the second thread groove are threadedly installed with the fastening bolt.

[0011] Preferably, the interference buffer mechanism includes a rotary cover plate, a friction pad, a limiting T-shaped block, a limiting T-shaped slot and a limiting cylinder. The rotary cover plate is slidably mounted on the side inner wall of the rotary cover shell body, and the friction pad is embedded in the bottom outer wall of the rotary cover plate. The side outer wall of the rotary cover plate is symmetrically provided with limiting T-shaped blocks, and the side inner wall of the rotary cover shell body is correspondingly provided with two groups of limiting T-shaped slots. A limiting cylinder is provided on the top inner wall of the rotary cover shell body located at the position of the limiting T-shaped slot.

[0012] Preferably, the interior of the limiting cylinder is pre-filled with damping fluid, and a limiting piston rod is slidably installed inside the limiting cylinder, a support spring is connected between the limiting piston rod and the top inner wall of the limiting cylinder, the protruding end of the limiting piston rod is arranged on the outside of the limiting cylinder, and the protruding end of the limiting piston rod is connected to the top outer wall of the limiting T-shaped block.

[0013] The beneficial effects of the utility model are:

[0014] 1. When the constant torque capping mechanism of the bottle capping machine is in use, a capping disk is provided inside the capping shell to resist and support the bottle cap, and a damping structure is used to buffer and support the capping disk. This allows the bottle cap to automatically achieve position correction when it is pressed into the capping shell, eliminating the need for a special resisting mechanism to resist the bottle cap. The capping shell is detachable in conjunction with the mechanism transmission, allowing the device to select a capping shell of appropriate size according to the size of the bottle cap being screwed. The overall structural design is ingenious and the use flexibility is good.

[0015] 2. When the constant torque capping mechanism of the bottle capping machine is in use, the capping shell is driven to move back and forth by the mechanism transmission, and the mechanism components are used to make the capping shell rotate. The capping process of the bottle cap can be automatically completed by the trajectory movement of the capping shell. The overall structural design is simple, the degree of automation is high, and it is easy to use and portable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the capping drive mechanism of the present invention;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the auxiliary capping mechanism of the present invention;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the screw cover shell body of the utility model;

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the conflict buffer mechanism of the present invention.

[0021] In the figure: 1. Upper support seat; 2. Lower support seat; 3. Mounting base; 4. Screw cap driving mechanism; 41. Servo motor; 42. Positioning support seat; 43. Screw cap shell body; 5. Auxiliary screw cap mechanism; 51. Limiting shaft; 52. Support ring; 53. Interference spring; 54. Drive motor; 55. Transmission shaft; 61. Interference block; 62. Interference slot; 63. First thread groove; 64. Second thread groove; 65. Fastening bolt; 7. Interference buffer mechanism; 71. Screw cap disk; 72. Friction pad; 73. Limiting T-block; 74. Limiting T-slot; 75. Limiting cylinder; 76. Limiting piston rod; 77. Support spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] When implementing: Figure 1-5 As shown, a constant torque capping mechanism of a bottle capping machine includes an upper support base 1, a lower support base 2 and a mounting base 3: the mounting base 3 is provided in the middle position of the upper support base 1 and the lower support base 2, a capping drive mechanism 4 is provided above the mounting base 3, an auxiliary capping mechanism 5 is provided on the side of the capping drive mechanism 4, and a resistance buffer mechanism 7 is provided above the upper support base 1;

[0024] The screw cap driving mechanism 4 includes a servo motor 41, a positioning support seat 42 and a screw cap shell body 43. The top outer wall of the mounting base 3 is provided with a servo motor 41, and the output end of the servo motor 41 is connected to the top outer wall of the positioning support seat 42, and the bottom outer wall of the positioning support seat 42 is fitted with a screw cap shell body 43; when it is necessary to drive the screw cap shell body 43 to rotate so that the subsequent screw capping process can proceed smoothly, the servo motor 41 is directly turned on at this time. When the servo motor 41 is turned on, it will automatically drive the positioning support seat 42 to rotate and then drive the screw cap shell body 43 to rotate. The servo motor 41 is respectively provided with a controller, a closed-loop control system and an encoder. The servo motor 41 can be controlled by the controller, so that the input signal is fed back to the servo motor 41, and the servo motor 41 can output a constant torque for rotation through the closed-loop control system. The encoder can monitor the actual output state of the servo motor 41, further improve the stability of the output torque of the servo motor 41, and thus achieve the effect of constant torque screw capping.

[0025] The auxiliary screw-cover mechanism 5 includes a limit shaft 51, a support ring 52 and a resistance spring 53. The limit shaft 51 is symmetrically connected between the upper support seat 1 and the lower support seat 2. The support ring 52 is slidably installed on the outside of the limit shaft 51, and a resistance spring 53 is connected between the support ring 52 and the top outer wall of the lower support seat 2, and the resistance spring 53 is sleeved on the outside of the limit shaft 51. The top outer wall of the upper support seat 1 is installed with a drive motor 54, and the output end of the drive motor 54 is connected to the top outer wall of the transmission shaft 55. The bottom outer wall of the transmission shaft 55 is rotatably installed with the top outer wall of the lower support seat 2, and the side outer wall of the transmission shaft 55 is provided with a bidirectional threaded groove, and the mounting base 3 is arranged through the outside of the limit shaft 51 and the transmission shaft 55; when it is necessary to control the rotation of the screw-cover shell body 43 When the bottle is lowered for the screw capping operation, it is only necessary to turn on the drive motor 54. When the drive motor 54 is turned on, it will automatically drive the transmission shaft 55 to rotate. Here, due to the bidirectional thread provided on the outside of the transmission shaft 55, when the transmission shaft 55 rotates, it will automatically drive the mounting base 3 to move. At the same time, due to the setting of the limit shaft 51, when the transmission shaft 55 rotates, it will only drive the mounting base 3 to realize the reciprocating trajectory movement in the vertical direction, and then as the mounting base 3 moves back and forth, it will automatically drive the screw cap shell body 43 to move up and down to complete the screw capping operation of the bottle. Here, there is friction between the support ring 52 and the limit shaft 51, and the buffering effect of the resistance spring 53 can form a simple damping structure, which can automatically provide a buffering support effect for the downward movement of the mounting base 3.

[0026] The top outer wall of the screw cap shell body 43 is provided with a contact card block 61, and the bottom outer wall of the positioning support seat 42 is correspondingly provided with a contact card groove 62. The contact card block 61 and the contact card groove 62 are engaged with each other, and the side outer wall of the positioning support seat 42 located at the position of the contact card groove 62 is provided with a first thread groove 63, and the side outer wall of the contact card block 61 is correspondingly provided with a second thread groove 64. The first thread groove 63 and the second thread groove 64 are threadedly installed with the fastening bolt 65; when the screw cap shell body 43 of the appropriate size in the device needs to be replaced according to the size of the bottle cap, it is only necessary to remove the fastening bolt 65 from the inner side of the first thread groove 63. The screw cap 63 is screwed out completely, and the interference block 61 changes from the locked state to the active state. Then the old screw cap shell body 43 can be directly removed. When installing the new screw cap shell body 43, it is first necessary to adjust the screw cap shell body 43 to a suitable position and push the interference block 61 at its top into the interference slot 62 at the corresponding position. When the interference block 61 moves to the top of the interference slot 62, the positions of the first thread groove 63 and the second thread groove 64 are in a corresponding overlapping state. Then, the fastening bolt 65 is directly used to pass through the first thread groove 63 and screw it to the bottom end of the second thread groove 64 to complete the installation process of the new screw cap shell body 43.

[0027] When the locking cam 75 is in the unlocking state, the locking cam 73 is locked, and the locking cam 73 is in the unlocking state, and the locking cam 73 is locked.

[0028] When the capping plate 71 moves to a predetermined height, the friction pad 72 cooperates with the rotation of the capping shell body 43 to automatically complete the capping work of the bottle cap.

[0029] When the present invention is in use, when the capping process needs to be performed, the servo motor 41 and the drive motor 54 need to be turned on synchronously;

[0030] When the servo motor 41 is turned on, it will automatically drive the positioning support seat 42 to rotate and then drive the rotary cover shell body 43 to rotate. The servo motor 41 in this device has a closed-loop control system, which can achieve precise position control and constant torque output according to the set number of revolutions and rotation circles. This ability mainly comes from the feedback mechanism inside the servo motor 41. The encoder is used inside to monitor the actual output state of the motor in real time and adjust it through the controller. Before use, the rotary cover torque of the device can be set by setting the number of revolutions and rotation circles of the servo motor 41, thereby achieving the effect of constant torque rotary cover. When the drive motor 54 is turned on, it will automatically drive the transmission shaft 55 to rotate. Here, due to the bidirectional thread on the outside of the transmission shaft 55, when the transmission shaft 55 rotates, it will automatically drive the mounting base 3 to move. At the same time, due to the setting of the limit shaft 51, when the transmission shaft 55 rotates, it will only drive the mounting base 3 to achieve a reciprocating trajectory motion in the vertical direction. Through the above process, the rotary cover shell body 43 is in a state of self-rotation and synchronous up and down reciprocating trajectory movement;

[0031] When the bottle cap needs to be screwed onto the bottle body, it is first necessary to place the bottle cap and the bottle body just below the screw cap shell body 43. Then, when the screw cap shell body 43 contacts the lid during the downward movement, the screw cap plate 71 will first contact the lid and automatically move upward under the squeezing action of the lid. When the screw cap plate 71 moves upward, it will automatically drive the limit T-shaped block 73 to slide inside the limit T-shaped slot 74. Here, the setting of the limit T-shaped block 73 and the limit T-shaped slot 74 synchronously plays the effect of limiting support for the movement of the screw cap plate 71. Here, the design of the limit cylinder 75, the limit piston rod 76 and the support spring 77 are combined with the design of filling the damping fluid inside the limit cylinder 75 to form a simple damping structure, so that when the above-mentioned limit T-shaped block 73 moves upward, it can be buffered and supported by this damping structure. When the screw cap plate 71 moves to a limited height, the resistance action of the friction pad 72 and the rotation action of the screw cap shell body 43 can automatically complete the screwing of the bottle cap.

[0032] It is noted here that when the bottle is actually screwed on, the existing machines will be equipped with a special resistance limit mechanism to position and support it, and this device is a screw-on mechanism, so it is not described in detail. The specific limiting method can be operated according to the existing conventional operating technical means. At the same time, the servo motor 41 and the drive motor 54 in this application are powered by the existing operating method. Whether it is powered by a power supply component or an external wire, it is all existing conventional operating technical means and will not be described in detail here.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A constant torque capping mechanism for a bottle capping machine, characterized in that: The invention comprises an upper support seat (1), a lower support seat (2) and a mounting base (3): the mounting base (3) is provided in the middle of the upper support seat (1) and the lower support seat (2); a capping drive mechanism (4) is provided above the mounting base (3); an auxiliary capping mechanism (5) is provided on the side of the capping drive mechanism (4); and a resistance buffer mechanism (7) is provided above the upper support seat (1); The rotary cap driving mechanism (4) comprises a servo motor (41), a positioning support seat (42) and a rotary cap shell body (43); the top outer wall of the mounting base (3) is provided with the servo motor (41); the output end of the servo motor (41) is connected to the top outer wall of the positioning support seat (42); and the bottom outer wall of the positioning support seat (42) is provided with the rotary cap shell body (43).

2. The constant torque capping mechanism of the bottle capping machine according to claim 1, characterized in that: The auxiliary cap screwing mechanism (5) comprises a limiting shaft (51), a support ring (52) and a resisting spring (53); the limiting shaft (51) is symmetrically connected between the upper support seat (1) and the lower support seat (2); the supporting ring (52) is slidably mounted on the outside of the limiting shaft (51); and the resisting spring (53) is connected between the supporting ring (52) and the top outer wall of the lower support seat (2); and the resisting spring (53) is sleeved on the outside of the limiting shaft (51).

3. The constant torque capping mechanism of a bottle capping machine according to claim 1, characterized in that: A driving motor (54) is installed on the top outer wall of the upper support seat (1), and the output end of the driving motor (54) is connected to the top outer wall of the transmission shaft (55). The bottom outer wall of the transmission shaft (55) is rotatably installed with the top outer wall of the lower support seat (2), and a bidirectional thread groove is opened on the side outer wall of the transmission shaft (55). The mounting base (3) is arranged on the outside of the limiting shaft (51) and the transmission shaft (55).

4. The constant torque capping mechanism of a bottle capping machine according to claim 1, characterized in that: The top outer wall of the rotary cover shell body (43) is provided with a resisting block (61), and the bottom outer wall of the positioning support seat (42) is correspondingly provided with a resisting slot (62), and the resisting block (61) and the resisting slot (62) are engaged with each other.

5. The constant torque capping mechanism of the bottle capping machine according to claim 4, characterized in that: A first thread groove (63) is formed on the side outer wall of the positioning support seat (42) at the position of the abutting slot (62), and a second thread groove (64) is formed on the side outer wall of the abutting block (61). The first thread groove (63) and the second thread groove (64) are threadedly mounted with the fastening bolt (65).

6. The constant torque capping mechanism of a bottle capping machine according to claim 1, characterized in that: The said conflict buffer mechanism (7) comprises a rotary cover plate (71), a friction pad (72), a limiting T-shaped block (73), a limiting T-shaped groove (74) and a limiting cylinder (75); the rotary cover plate (71) is slidably mounted on the side inner wall of the rotary cover shell body (43); the friction pad (72) is embedded in the bottom outer wall of the rotary cover plate (71); the limiting T-shaped blocks (73) are symmetrically arranged on the side outer wall of the rotary cover plate (71); two groups of limiting T-shaped grooves (74) are correspondingly opened on the side inner wall of the rotary cover shell body (43); and the limiting cylinder (75) is arranged on the top inner wall of the rotary cover shell body (43) at the position of the limiting T-shaped groove (74).

7. The constant torque capping mechanism of a bottle capping machine according to claim 6, characterized in that: The interior of the limiting cylinder (75) is pre-filled with damping fluid, and a limiting piston rod (76) is slidably installed inside the limiting cylinder (75), a support spring (77) is connected between the limiting piston rod (76) and the top inner wall of the limiting cylinder (75), and the protruding end of the limiting piston rod (76) is arranged outside the limiting cylinder (75), and the protruding end of the limiting piston rod (76) is connected to the top outer wall of the limiting T-shaped block (73).

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