Novel cap screwing head

Abstract

The utility model belongs to the technical field of filling equipment, and particularly relates to a novel cap screwing head which comprises a machine head fixing shaft, a center shaft and a machine head nut, the machine head fixing shaft and the center shaft are coaxially and oppositely arranged, the center shaft is sleeved with the machine head nut, the machine head fixing shaft and the center shaft are both cylinders, and the side, facing the center shaft, of the machine head nut is of a conical structure with the wide upper portion and the narrow lower portion. A climbing arm is movably arranged on the side, close to the machine head nut, of the center shaft in a sleeving mode, and a slope wheel attached to the center shaft is arranged on the side, facing the machine head nut, of the climbing arm, so that the space size of the cap screwing head is reduced, the size of the whole machine head is more reasonable, the structure is compact, the concentricity of the machine head during cap screwing is guaranteed, and the cap screwing precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of canning equipment, and particularly relates to a novel cap screwing head. BACKGROUND

[0002] The cap screwing machine is also called a capping machine, a cap pressing machine or a cap locking machine, is used for screwing and unscrewing the caps of plastic bottles or glass bottles after the bottles are separately packed, and is one of the main equipment of an automatic filling production line.

[0003] At present, the cap screwing head is usually spliced by two upper and lower supports, and one end of the upper support towards the lower support is provided with a circular pipe with a slope, so that the lower support can climb towards the upper support along the circular pipe when being pressed down, therefore, the cap screwing head is long in size and large in torque, and after being used for a period of time, the cap screwing head will shake left and right, resulting in inconsistent concentricity during cap screwing, and the cap screwing effect is not good, which may scratch the cap or make the cap not have good lines, thereby affecting the capping quality and reducing the product quality. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a novel cap screwing head, which aims to reduce the space size of the cap screwing head, make the size of the whole head more reasonable, compact in structure, ensure the concentricity of the head during cap screwing, and improve the precision of cap screwing.

[0005] The utility model adopts the technical scheme as follows:

[0006] A novel cap screwing head, comprising coaxially arranged head fixing shafts and a central shaft, and a head nut sleeved on the central shaft, the head fixing shafts and the central shaft are all cylindrical bodies, and the side of the head nut towards the central shaft is a conical structure which is wide at the top and narrow at the bottom, a climbing arm is movably sleeved on the side of the central shaft close to the head nut, and the side of the climbing arm towards the head nut is provided with a slope wheel which is in close contact with the central shaft.

[0007] As a preferred technical scheme, one end of the climbing arm away from the slope wheel is provided with a middle support in parallel, the middle support is clamped on the central shaft, the other end of the middle support is provided with a guide disc, and a supporting strut is arranged between the middle support and the guide disc.

[0008] Further, the two sides of the climbing arm are provided with downwardly extending embossing wheel arms, the embossing wheel arms are movably arranged in the middle support, an adjusting screw is movably arranged between the embossing wheel arms and the climbing arm, an adjusting nut is sleeved on the adjusting screw on the embossing wheel arm, and a first spring is sleeved on the adjusting screw between the embossing wheel arm and the climbing arm.

[0009] Further, one end of the embossing wheel arm penetrating through the middle support is provided with an embossing wheel assembly, which comprises an embossing wheel, a lifting arm, a second spring and a lifting screw arranged in sequence, wherein the embossing wheel is fixedly connected with the lifting arm, the second spring is sleeved on the lifting arm, one end of the lifting screw is fixed with the lifting arm, and the other end penetrates into the embossing wheel arm.

[0010] Further, the outer side of the embossing wheel arm is provided with a limiting nut and a limiting screw for adjusting the lifting arm, wherein one end of the limiting screw movably penetrates into the embossing wheel arm and is in abutment with the lifting screw, and the limiting nut is sleeved on the other end of the limiting screw.

[0011] Further, one end of the center shaft away from the head fixing shaft is provided with a pressing die, and the pressing die is a hollow structure, and the embossing wheels are parallel and surround the whole body of the pressing die.

[0012] Further, one side of the pressing die close to the middle support is provided with an edge collecting claw, the edge collecting claw is a disc structure formed by splicing three same arc-shaped half rings, one side of the embossing wheel close to the guide disc is provided with an edge collecting wheel, and the top of the edge collecting wheel is provided with a fourth bearing, a knurl sleeve, a third bearing, an edge collecting wheel spring and a chuck in sequence.

[0013] Further, the opposite positions of the head fixing shaft and the center shaft are simultaneously sleeved with a connecting sleeve, the connecting sleeve is provided with a stop screw on both sides of the part of the center shaft, and the connecting position of the center shaft and the head nut is provided with a first bearing.

[0014] Further, one side of the center shaft close to the pressing die is provided with a second bearing, and a bearing cover is annularly arranged on the second bearing.

[0015] Further, the inner parts of the first bearing and the second bearing are both sleeved with a needle bearing, and one end of the head fixing shaft away from the center shaft is provided with a head conversion shaft.

[0016] As described above, due to the adoption of the above technical scheme, the beneficial effects of the present application are as follows:

[0017] The space size of the cap screwing head is reduced, the size of the whole head is more reasonable, the structure is compact, the concentricity during the cap screwing of the head is ensured, and the precision of the cap screwing is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be described by examples and with reference to the accompanying drawings, wherein:

[0019] Figure 1 is a structural schematic view of a new type of cap screwing head provided by the present application;

[0020] Figure 2 is a structural schematic view of a new type of cap screwing head provided by the present application.

[0021] Head conversion shaft-1; Head fixed shaft-2; Connecting sleeve-3; Center shaft-4; Stop screw-5; First bearing-6; Needle bearing-7; Head nut-8; Slope wheel-9; Climbing arm-10; Embossing wheel arm-11; First spring-12; Adjusting nut-13; Adjusting screw-14; Limiting nut-15; Limiting screw-16; Bearing cover-17; Second bearing-18; Lifting screw-19; Second spring-20; Lifting arm-21; Embossing wheel-22; Die-23; Brace-24; Guide disc-25; Edge closing claw-26; Middle support-27; Chuck-28; Edge closing wheel spring-29; Third bearing-30; Knurled sleeve-31; Fourth bearing-32; Edge closing wheel-33. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Embodiment one

[0024] In the prior art, the structure of the cap screwing head is usually spliced by two upper and lower supports. At one end of the upper support towards the lower support, a circular tube with a slope is arranged. This design enables the lower support to climb up the upper support along the circular tube during the pressing process. However, this also leads to a longer size of the cap screwing head and a larger torque. After being used for a period of time, the cap screwing head may appear to sway left and right, thereby causing inconsistent concentricity during the cap screwing. This may result in poor cap screwing effect, such as scratched bottle caps or poor thread of the bottle caps, thereby affecting the sealing quality and reducing the product quality.

[0025] Therefore, in order to solve the problems of the prior art, such as the longer size of the cap screwing head, the complicated design, the larger torque, the inconsistent concentricity, and the poor cap screwing effect, such as the scratched bottle caps or the poor thread of the bottle caps, the present application discloses a new cap screwing head, which realizes the functions of improving the tightness of the cap screwing head and shortening the length of the cap screwing head. Figure 1 The cap screwing head comprises coaxially arranged head fixed shaft 2 and center shaft 4, and head nut 8 arranged on the center shaft 4. Specifically, the head fixed shaft 2 and the center shaft 4 are both cylindrical bodies, and the side of the head nut 8 towards the center shaft 4 is a tapered structure with a width increasing from top to bottom. The side of the center shaft 4 close to the head nut 8 movably arranges a climbing arm 10, and the side of the climbing arm 10 towards the head nut 8 is provided with a slope wheel 9 abutting the center shaft 4.

[0026] In the installation of the improved rotary cap, the user can insert the head conversion shaft 1 into the rotary cap machine, and then fix the head fixing shaft 2 inside the rotary cap machine, so as to complete the installation of the rotary cap. Then, when the new rotary cap is needed to be used for capping, the edge collecting wheel 33 is used to collect the bottle cap in the mold 23, and then the new rotary cap is pressed onto the bottle to be capped by the rotary cap machine, so that the bottle cap collected in the mold 23 can be connected with the bottle mouth, and the embossing wheel 22 is abutted on the outside of the bottle cap. Then, the new rotary cap can continue to be pressed to extrude the climbing arm 10 upward, so that the slope wheel 9 can climb along the taper of the head nut 8. By setting the head nut 8 to be tapered, the slope wheel 9 can climb along the taper of the head nut 8, and compared with the existing rotary cap which needs to set the upper and lower supports and the circular pipe with slope between the upper and lower supports, the new rotary cap sets the head nut 8 to be tapered for the slope wheel 9 to climb, without the need to set the upper and lower supports, so that the components of the new rotary cap are more compact, and the overall length is shortened.

[0027] In the embodiment, the surface of the head fixing shaft 2 is provided with threads, and the head fixing shaft 2 can be fixed in the external rotary cap machine through the threads.

[0028] In the embodiment, the end of the head fixing shaft 2 away from the central shaft 4 is provided with the head conversion shaft 1, and the head conversion shaft 1 is cylindrical as a whole, and the top part can be divided into a character type or a cylindrical shape to adapt to different models of rotary cap machines.

[0029] In summary, in the use of the new rotary cap, different head conversion shafts 1 can be selected according to the signal of the rotary cap machine, and then the head conversion shaft 1 is installed and fixed in the head fixing shaft 2, and the threads on the surface of the head fixing shaft 2 can fix the new rotary cap on the rotary cap machine. At this time, the head conversion shaft 1 and the head fixing shaft 2 are completely wrapped in the rotary cap machine, the head nut 8 is abutted on the rotary cap machine, and the head nut 8 can be used for the climbing of the climbing arm 10 and the slope wheel 9, so that the overall length of the new rotary cap is shortened, and the circular pipe with slope and the upper support are not needed to be set, the torque is reduced, and the consistency of the concentricity is maintained.

[0030] Embodiment two

[0031] On the basis of embodiment one, in order to further avoid the deviation of the new rotary cap in the process of pressing, refer to Figures 1-2The application also comprises a guide disc 25 for guiding and a support rod 24 for supporting the guide disc 25. Specifically, the climbing arm 10 is provided with a middle support 27 parallel to one end of the slope wheel 9, the middle support 27 is clamped on the central shaft 4, and the other end of the middle support 27 is provided with the guide disc 25, and the support rod 24 is arranged between the middle support 27 and the guide disc 25.

[0032] When the new rotary cap head is continuously pressed down, the guide disc 25 can push the middle support 27 through the support rod 24, so that the middle support 27 can move upwards along the central shaft 4, and the force on the middle support 27 is uniform, so that the middle support 27 is not easy to deviate in the process of moving upwards.

[0033] Embodiment three

[0034] On the basis of the embodiments one and two, the application also comprises a embossing wheel arm 11, an adjusting screw 14 and an adjusting nut 13 for adjusting the pressing force of the embossing wheel 22, as shown in Figure 1 Specifically, the two sides of the climbing arm 10 are provided with downwardly extending embossing wheel arms 11, the embossing wheel arms 11 are movably arranged in the middle support 27, the adjusting screw 14 is movably arranged between the embossing wheel arm 11 and the climbing arm 10, the adjusting nut 13 is arranged on the adjusting screw 14 located on the embossing wheel arm 11, and the first spring 12 is arranged on the adjusting screw 14 located between the embossing wheel arm 11 and the climbing arm 10.

[0035] When it is necessary to adjust the clamping force of the embossing wheel 22, the user can first loosen the adjusting nut 13 of the adjusting screw 14, then rotate the adjusting screw 14, so that the adjusting screw 14 is screwed into the interior of the climbing arm 10, so that the embossing wheel arm 11 can move towards the climbing arm 10, and through the movement of the embossing wheel arm 11, the embossing wheel 22 at the bottom of the embossing wheel arm 11 can be more close to the bottle cap in the embossing die 22, so as to increase the fitting force of the embossing wheel 22 and the bottle cap. Finally, the user can fix the adjusting screw 14 by tightening the adjusting nut 13 again, so that the embossing wheel arm 11 can be fixed at the adjusted position.

[0036] In this embodiment, the first spring 12 can provide buffering and support for the embossing wheel arm 11 when moving towards the climbing arm 10, so that the embossing wheel arm 11 can stably move during the adjustment process, and the shaking or misalignment of the embossing wheel arm 11 can be avoided.

[0037] Embodiment four

[0038] On the basis of the embodiment three, the application also provides a lifting assembly for adjusting the height of the embossing wheel 22, comprising a lifting arm 21 and a lifting screw 19, as shown in Figure 1Specifically, one end of the embossing wheel arm 11 is provided with an embossing wheel assembly, the embossing wheel assembly comprises, in sequence, an embossing wheel 22, a lifting arm 21, a second spring 20 and a lifting screw 19, wherein the embossing wheel 22 is fixedly connected with the lifting arm 21, the second spring 20 is sleeved on the lifting arm 21, one end of the lifting screw 19 is fixed with the lifting arm 21, and the other end is arranged in the embossing wheel arm 11;

[0039] When it is required to seal bottle caps of different lengths, the height of the embossing wheel 22 needs to be adjusted. The user can rotate the lifting arm 21 to drive the lifting screw 19, so that the lifting screw 19 can be screwed into or out of the embossing wheel arm 11 according to the rotating direction of the user, so that the lifting arm 21 can drive the embossing wheel 22 to move up or down, so that it can be suitable for bottle caps of different lengths, and the second spring 20 can play a buffering and supporting role, so that the lifting arm 21 is not prone to shaking or mispositioning during lifting.

[0040] Embodiment five

[0041] On the basis of embodiment four, the application further provides a limiting assembly for controlling the lifting assembly, comprising a limiting nut 15 and a limiting screw 16, as shown in Figure 1 Specifically, the outer side of the embossing wheel arm 11 is provided with a limiting nut 15 and a limiting screw 16 for adjusting the lifting arm 21, wherein one end of the limiting screw 16 is movably arranged in the embossing wheel arm 11 and abuts against the lifting screw 19, and the limiting nut 15 is sleeved on the other end of the limiting screw 16.

[0042] When it is not required to adjust the height of the embossing wheel 22, the user can insert the limiting screw 16 into the embossing wheel arm 11 and abut against one side of the lifting screw 19, so that the lifting screw 19 cannot rotate in the embossing wheel arm 11, thereby limiting the lifting screw 19. When it is required to adjust the height of the embossing wheel 22, the user can first loosen the limiting nut 15, and then reversely rotate the limiting screw 16, so that the limiting screw 16 can be separated from the lifting screw 19, thereby enabling the lifting screw 19 to rotate smoothly in the embossing wheel arm 11.

[0043] The application further provides a specific application mode of the embossing wheel 22. The embossing wheel 22 is provided in four, and the four embossing wheels 22 are distributed in a square shape. When the bottle cap is clamped in the pressing die 23, the user can abut two parallel embossing wheels 22 against the surface of the bottle cap through the lifting assembly, so as to play a clamping role, and then lower the other two parallel embossing wheels 22 to the two sides of the bottom of the bottle cap through the lifting assembly, so as to play an edge sealing role.

[0044] Embodiment six

[0045] On the basis of the first embodiment to the fifth embodiment, the application further provides a specific application mode of the embossing wheel 22, referring to Figures 1-2 Specifically, the center shaft 4 is provided with a pressing die 23 at one end away from the head fixing shaft 2, the pressing die 23 is a hollow structure, and the embossing wheel 12 is parallelly arranged around the circumference of the pressing die 23.

[0046] The four embossing wheels 22 are arranged in a square shape, when the bottle cap is clamped in the pressing die 23, the user can clamp two parallel embossing wheels 22 against the surface of the bottle cap through the lifting assembly, and then lower the other two parallel embossing wheels 22 to the two sides of the bottom of the bottle cap through the lifting assembly, so as to play the role of edge sealing.

[0047] The seventh embodiment

[0048] On the basis of the first embodiment and the sixth embodiment, in order to make the bottle cap be clamped in the pressing die 23 smoothly, the application further includes an edge collecting claw 26 for clamping the bottle cap, referring to Figure 2 Specifically, the pressing die 23 is provided with the edge collecting claw 26 on one side close to the middle support 27, the edge collecting claw 26 is a disc structure formed by splicing three same arc-shaped half rings, the embossing wheel 12 is provided with an edge sealing wheel 33 on one side close to the guide disc 25, and the top of the edge sealing wheel 33 is sequentially provided with a fourth bearing 32, a knurl sleeve 31, a third bearing 30, an edge sealing wheel spring 29 and a chuck 28.

[0049] When it is needed to clamp the bottle cap, the user can make the side without opening of the bottle cap face the pressing die 23, with the pressing die 23 being pressed, the bottle cap can pass through the edge sealing wheel 33 and contact the edge collecting claw 26 on the top of the pressing die 23, at this time, the edge collecting claw 26 can clamp the top of the bottle cap, and the knurl sleeve 31 can wrap the middle and lower parts of the bottle cap, and further clamp the bottle cap through the chuck 28.

[0050] In this embodiment, the edge collecting claw 26 has a stretchability.

[0051] In this embodiment, the third bearing 30 and the fourth bearing 32 can play the role of fixing the knurl sleeve 31.

[0052] In this embodiment, the edge sealing wheel spring 29 can provide a buffering effect when the new type of cap head is pressed.

[0053] In this embodiment, the edge sealing wheel 33 is a circular hole formed on the surface of the guide disc 25, which is used for facilitating the bottle opening to pass through the guide disc 25 during the sealing cap operation.

[0054] The eighth embodiment

[0055] On the basis of the first embodiment to the seventh embodiment, the application further includes the first bearing 6 and the second bearing 18 for improving the stability of the new type of cap head, referring toFigure 1 Specifically, the head fixing shaft 2 and the center shaft 4 are sleeved with the connecting sleeve 3, the connecting sleeve 3 is provided with the stop screw 5 on both sides of the part of the center shaft 4, the center shaft 4 is provided with the first bearing 6 at the connecting position of the center shaft 4 and the head nut 8, the center shaft 4 is provided with the second bearing 18 on the side close to the die 23, and the second bearing 18 is sleeved with the bearing cover 17.

[0056] In the embodiment, the first bearing 6, the second bearing 18, the third bearing 30 and the fourth bearing 32 are all selected as the plane bearing.

[0057] Embodiment nine

[0058] On the basis of the embodiment one, in order to further reduce the overall length of the new rotary cap head, referring to Figure 1 Specifically, the first bearing 6 and the second bearing 18 are both sleeved with the needle bearing 7.

[0059] The needle bearing 7 has a compact radial structure, the inner diameter size and the load capacity are the same as other types of bearings, and the outer diameter is the smallest, so it is suitable for the support structure with limited radial installation size.

[0060] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts between the various embodiments can be referred to each other.

[0061] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A new type of spin cap head, comprising coaxially arranged head fixing shaft (2) and center shaft (4), and head nut (8) sleeved on the center shaft (4), characterized in that, The machine head fixing shaft (2) and the center shaft (4) are both cylindrical, and the side of the machine head nut (8) facing the center shaft (4) is a tapered structure that is wide at the top and narrow at the bottom, the side of the center shaft (4) close to the machine head nut (8) movably sleeved with a climbing arm (10), and the side of the climbing arm (10) facing the machine head nut (8) is provided with a slope wheel (9) that is attached to the center shaft (4).

2. A new type of spin-on cap according to claim 1, characterized in that, The end of the climbing arm (10) away from the slope wheel (9) is provided with a middle support (27) in parallel, the middle support (27) is clamped on the center shaft (4), and the other end of the middle support (27) is provided with a guide disc (25), and a supporting strut (24) is arranged between the middle support (27) and the guide disc (25).

3. A new type of spin-on cap according to claim 2, characterized in that, The two sides of the climbing arm (10) are provided with downwardly extending embossing wheel arms (11), and the embossing wheel arms (11) movably pass through the middle support (27), the adjusting screw (14) movably passes through between the embossing wheel arms (11) and the climbing arm (10), the adjusting screw (14) on the embossing wheel arms (11) is sleeved with the adjusting nut (13), and the adjusting screw (14) between the embossing wheel arms (11) and the climbing arm (10) is sleeved with the first spring (12).

4. A new type of spin-on cap according to claim 3, characterized in that, The end of the embossing wheel arm (11) passing through the middle support (27) is provided with an embossing wheel assembly, and the embossing wheel assembly comprises, in sequence, an embossing wheel (22), a lifting arm (21), a second spring (20) and a lifting screw (19), wherein the embossing wheel (22) is fixedly connected with the lifting arm (21), the second spring (20) is sleeved on the lifting arm (21), one end of the lifting screw (19) is fixed with the lifting arm (21), and the other end passes through the embossing wheel arm (11).

5. A new type of spin-on cap according to claim 4, characterized in that, The outer side of the embossing wheel arm (11) is provided with a limiting nut (15) and a limiting screw (16) for adjusting the lifting arm (21), wherein one end of the limiting screw (16) movably passes through the embossing wheel arm (11) and is attached to the lifting screw (19), and the other end of the limiting screw (16) is sleeved with the limiting nut (15).

6. A new type of spin-on cap according to any one of claims 1-4, characterized in that, The end of the center shaft (4) away from the machine head fixing shaft (2) is provided with a pressing die (23), the pressing die (23) is a hollow structure, and the embossing wheel (22) is parallel around the circumference of the pressing die (23).

7. A new type of spin-on cap according to claim 6, characterized in that, The side of the pressing die (23) close to the middle support (27) is provided with an edge collecting claw (26), the edge collecting claw (26) is a disc structure formed by splicing three same arc-shaped half rings, the side of the embossing wheel (22) close to the guide disc (25) is provided with an edge collecting wheel (33), and the top of the edge collecting wheel (33) is sequentially provided with a fourth bearing (32), a knurl sleeve (31), a third bearing (30), an edge collecting wheel spring (29) and a chuck (28).

8. A new type of spin-on cap according to claim 1, characterized in that, The opposite positions of the machine head fixing shaft (2) and the center shaft (4) are simultaneously sleeved with a connecting sleeve (3), the two sides of the part of the connecting sleeve (3) located on the center shaft (4) are provided with a stop screw (5), and the connecting position of the center shaft (4) and the machine head nut (8) is provided with a first bearing (6).

9. A new type of spin-on cap according to claim 8, characterized in that, The center shaft (4) is provided with a second bearing (18) on one side close to the die (23), and a bearing cover (17) is arranged on the second bearing (18).

10. A new type of spin-on cap according to claim 9, characterized in that, The first bearing (6) and the second bearing (18) are both provided with a needle bearing (7) inside, and the machine head fixing shaft (2) is provided with a machine head conversion shaft (1) on one end away from the center shaft (4).

Images