阅读说明：本技术 在线贴胶机构转移胶轮装置、控制方法、组件及机构 (Rubber wheel transferring device of online gluing mechanism, control method, assembly and mechanism ) 是由 樊振华 于 2020-06-18 设计创作，主要内容包括：本发明公开了一种在线贴胶机构转移胶轮装置、控制方法、组件及机构,其中在线贴胶机构转移胶轮装置包括转移胶轮轴及若干转移胶轮,转移胶轮由内向外开设有多个真空孔及多个压缩空气孔,转移胶轮轴在其两端开口处分别安装有真空接口及压缩空气接口,转移胶轮轴的中空通道内设置有轴内真空主管线、轴内压缩空气主管线,轴内真空主管线通过真空歧管与转移胶轮上的真空孔连通,轴内压缩空气主管线通过压缩空气歧管与转移胶轮上的压缩空气孔连通。该种在线贴胶机构转移胶轮装置、控制方法、组件及机构具有结构简单、转动惯性小、启动、加速性能好等优点,有助于提升在线贴胶的效率及精度。(The invention discloses a rubber wheel transferring device of an online rubberizing mechanism, a control method, a component and a mechanism, wherein the rubber wheel transferring device of the online rubberizing mechanism comprises a rubber wheel transferring shaft and a plurality of rubber wheels, the rubber wheels are provided with a plurality of vacuum holes and a plurality of compressed air holes from inside to outside, the rubber wheel transferring shaft is respectively provided with a vacuum interface and a compressed air interface at openings at two ends of the rubber wheel transferring shaft, an in-shaft vacuum main pipe and an in-shaft compressed air main pipe are arranged in a hollow channel of the rubber wheel transferring shaft, the in-shaft vacuum main pipe is communicated with the vacuum holes on the rubber wheels by a vacuum manifold, and the in-shaft compressed air main pipe is communicated with the compressed air holes on the rubber wheels by a compressed air manifold. The rubber wheel transferring device, the control method, the assembly and the mechanism of the on-line rubberizing mechanism have the advantages of simple structure, small rotation inertia, good starting and accelerating performance and the like, and are beneficial to improving the efficiency and the precision of on-line rubberizing.)

1. The utility model provides an online rubberizing mechanism shifts rubber tyer device which characterized in that: the transfer rubber wheel comprises a transfer rubber wheel shaft (1) with a hollow channel (11) and a plurality of transfer rubber wheels (2) arranged outside the transfer rubber wheel shaft (1), wherein the transfer rubber wheels (2) are provided with a plurality of vacuum holes and a plurality of compressed air holes from inside to outside, the transfer rubber wheel shaft (2) is provided with a vacuum interface (31) and a compressed air interface (32) at openings at two ends respectively, an in-shaft vacuum main pipeline (41) and an in-shaft compressed air main pipeline (42) are arranged in the hollow channel (11) of the transfer rubber wheel shaft (1), the in-shaft vacuum main pipeline (41) and the in-shaft compressed air main pipeline (42) are communicated with the inner ends of the vacuum interface (31) and the compressed air interface (32) respectively, the in-shaft vacuum main pipeline (41) is communicated with the vacuum holes in the transfer rubber wheel (2) through a vacuum manifold (51), and the in-shaft compressed air main pipeline (42) is communicated with the compressed air holes in the transfer rubber wheel (2) through a compressed air manifold (52) And (4) communicating.

2. The transfer rubber wheel device of the on-line rubberizing mechanism according to claim 1, wherein: the vacuum interface (31) and the compressed air interface (32) are rotary joints, vacuum can be applied to vacuum holes in the transfer rubber wheel (2) through the vacuum interface (31), the in-shaft vacuum main pipeline (41) and the vacuum manifold (51), and compressed air can be applied to the compressed air holes in the transfer rubber wheel (2) through the compressed air interface (32), the in-shaft compressed air main pipeline (42) and the compressed air manifold (52) and breaks the vacuum.

3. The transfer rubber wheel device of the on-line rubberizing mechanism according to claim 1, wherein: an annular cavity (21) is formed in the transfer rubber wheel (2), the vacuum hole and the compressed air hole are communicated with the annular cavity (21), the vacuum manifold (51) and the compressed air manifold (52) are communicated with the annular cavity (21), the external connection position of the vacuum interface (31) is connected with a vacuum generator through a pipeline, and the external connection position of the compressed air interface (32) is connected with a compressed air valve system through a pipeline.

4. The transfer rubber wheel device of the on-line rubberizing mechanism according to claim 1, wherein: the vacuum holes and the compressed air holes formed in the transfer rubber wheel (1) are distributed in a central symmetry mode along the axial direction, static balance and dynamic balance of the whole transfer rubber wheel shaft (1) are guaranteed, and the vacuum holes and the compressed air holes can be universal holes.

5. The transfer rubber wheel device of the on-line rubberizing mechanism according to claim 1, wherein: the vacuum manifold (51) and the compressed air manifold (52) are arranged in the hollow channel (11) of the transfer rubber wheel shaft (1) and are distributed in a staggered mode in the hollow channel (11) along the axial direction.

6. The transfer rubber wheel device of the on-line rubberizing mechanism according to claim 1, wherein: along the access direction of the in-shaft vacuum main line (41) from the vacuum interface (31), the last vacuum manifold (51) is a two-way manifold or a three-way manifold, the other vacuum manifolds (51) are three-way manifolds, along the access direction of the in-shaft compressed air main line (42) from the compressed air interface (32), the last compressed air manifold (52) is a two-way manifold or a three-way manifold, and the other compressed air manifolds (52) are three-way manifolds.

7. A vacuum control method suitable for the rubber wheel transferring device of the on-line rubberizing mechanism of any one of claims 1 to 6, characterized in that: the control method comprises the following steps:

and (3) vacuum opening: the vacuum is opened when the transfer rubber wheel (2) is pressed down to the rubber preparing plate (71) and the adhesive tape is prepared to be transferred for one time;

and (3) vacuum maintenance: when the transfer rubber wheel (2) is lifted up, stays in the middle and is in a position avoiding position, the transfer rubber wheel (2) keeps a vacuum function;

and (3) closing the vacuum: when the foil (9) reaches the tape splicing position, the transfer rubber wheel (2) rises and the adhesive tape is transferred for the second time, the transfer rubber wheel (2) starts compressed air, and meanwhile, the vacuum of the air transfer rubber wheel (2) is closed.

8. The utility model provides an online rubberizing mechanism shifts rubberizing subassembly which characterized in that: the transfer rubber wheel device of the online rubberizing mechanism comprises a transfer swing arm (6) and a swing arm driving device capable of driving the transfer swing arm (6) to swing, wherein the transfer swing arm (6) is provided with the transfer rubber wheel device of the online rubberizing mechanism according to any one of claims 1-6 and a rotation driving device for driving the transfer rubber wheel shaft (1) and the transfer rubber wheel (2) to rotate.

9. The utility model provides an online rubberizing mechanism which characterized in that: the transfer adhesive tape sticking mechanism comprises a rack, and an unwinding assembly, an adhesive tape opening assembly, an adhesive tape sticking assembly and an adhesive tape preparing assembly which are arranged on the rack, wherein the online adhesive tape sticking mechanism transfer adhesive tape sticking assembly of claim 8 is further arranged on the rack.

10. The on-line rubberizing mechanism according to claim 9, characterized in that: the transfer swing arm (6) is installed on the rack through a swing arm installation shaft (61), the glue preparation assembly comprises a glue preparation plate (71), a glue pressing cylinder (72) and a glue pressing head (73), the swing arm driving device is a secondary stroke driving cylinder, and the transfer swing arm (6) is a secondary stroke swing arm.

Technical Field

The invention relates to the field of lithium battery processing, in particular to a rubber wheel transferring device of an online gluing mechanism, a control method, a component and a mechanism.

Background

With the wide application of lithium batteries, various devices related to the field of lithium battery production are increasing. In order to meet social needs, the automation degree of battery production enterprises is higher and higher, and various devices are in the process of being unmanned and intelligent.

In the production process of the lithium battery, two adjacent rolls of foil need to be connected to realize continuous winding. In the prior art, after foil is automatically connected, the strength of the connecting position of the foil is lower than that of other positions, the phenomenon of belt breakage of the connecting position is easily caused in subsequent processes, the processing quality of a battery is affected, a large amount of manpower and material resources are consumed for maintenance, and the production cost is high. And the individual positions needing belt splicing still adopt a manual operation mode to complete belt splicing, and at the moment, the processing equipment needs to be stopped, so that the production efficiency is seriously reduced, and the production cost is further increased.

To this end, new solutions have been proposed by the companies, such as the following patent applications: 2020100154594, which discloses a technical scheme of an online adhesive tape sticking mechanism for the moving direction of foil, in the technical scheme, the automatic adhesive tape sticking work with high efficiency and high quality is realized by adopting an online adhesive tape transferring method, a transferring adhesive tape preparing roller has the auxiliary functions of vacuum adsorption and vacuum breaking control, the adhesive tape transferring reliability can be improved, the basic function of online adhesive tape sticking has good effect, the adhesive tape has no bubbles, no wrinkles and good adhesive tape sticking quality.

However, in this technical solution, vacuum and vacuum-breaking line joints (including a vacuum generator and a vacuum-breaking control solenoid valve) for generating vacuum and vacuum breaking are both installed on the rotating shaft of the transfer assembly, so that the whole adhesive tape transfer assembly, especially the rotating shaft of the transfer assembly, has a large mass, which further causes a large inertia of the rotating shaft of the adhesive tape transfer assembly in the rotating process, and brings negative effects to the start, acceleration and stop of the adhesive tape transfer process, the dynamic control effect of the transfer standby adhesive roller during high-speed operation is not good, and further limits the speed of on-line adhesive tape application, and the whole technical solution also has a space for further optimization.

In view of the above, the present invention provides a new technical solution to solve the existing technical drawbacks.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a rubber wheel transferring device, a control method, a component and a mechanism of an online rubberizing mechanism, and solves the technical defects of large rotation inertia of a rubber wheel transferring shaft, influence on starting and accelerating performance, reduction in rubberizing efficiency and the like in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a rubber wheel transferring device of an on-line rubberizing mechanism comprises a transferring rubber wheel shaft with a hollow channel and a plurality of transferring rubber wheels arranged outside the transferring rubber wheel shaft, wherein a plurality of vacuum holes and a plurality of compressed air holes are formed in the transferring rubber wheels from inside to outside, a vacuum interface and a compressed air interface are respectively installed at openings at two ends of the transferring rubber wheel shaft, an in-shaft vacuum main pipeline and an in-shaft compressed air main pipeline are arranged in the hollow channel of the transferring rubber wheel shaft and are respectively communicated with the vacuum interfaces and the inner ends of the compressed air interfaces at the shaft ends, the in-shaft vacuum main pipeline is communicated with the vacuum holes in the transferring rubber wheel through a vacuum manifold, and the in-shaft compressed air main pipeline is communicated with the compressed air holes in the transferring rubber wheel through a compressed air manifold.

As an improvement of the technical scheme, the vacuum interface and the compressed air interface are rotary joints, vacuum or vacuum breaking operation can be applied to the vacuum holes in the transfer rubber wheel through the vacuum interface, the in-shaft vacuum main pipeline and the vacuum manifold, and compressed air can be applied to the compressed air holes in the transfer rubber wheel through the compressed air interface, the in-shaft compressed air main pipeline and the compressed air manifold.

As a further improvement of the above technical solution, an annular cavity is provided inside the transfer rubber wheel, the vacuum hole and the compressed air hole are both communicated with the annular cavity, the vacuum manifold and the compressed air manifold are both communicated with the annular cavity, an external connection position of the vacuum port is connected with the vacuum generator through a pipeline, and an external connection position of the compressed air port is connected with the compressed air valve system through a pipeline.

As a further improvement of the technical scheme, the vacuum holes and the compressed air holes formed in the transfer rubber wheel are distributed in a central symmetry mode along the axial direction, so that static balance and dynamic balance of the whole transfer rubber wheel shaft are guaranteed, and the vacuum holes and the compressed air holes can be universal holes.

As a further improvement of the technical proposal, the vacuum manifold and the compressed air manifold are arranged in the hollow channel of the transfer rubber wheel shaft and are distributed in the hollow channel in a staggered way along the axial direction

As a further improvement of the above technical solution, along the access direction of the main vacuum line in the shaft from the vacuum port, the last vacuum manifold is a two-way manifold or a three-way manifold, and the other vacuum manifolds are three-way manifolds, along the access direction of the main compressed air line in the shaft from the compressed air port, the last compressed air manifold is a two-way manifold or a three-way manifold, and the other compressed air manifolds are three-way manifolds.

A vacuum control method for a rubber wheel transferring device of an on-line rubberizing mechanism comprises the following steps:

and (3) vacuum opening: opening vacuum when the transfer rubber wheel is pressed down to the rubber preparation plate and the adhesive tape is prepared to be subjected to primary transfer operation;

and (3) vacuum maintenance: when the transfer rubber wheel is lifted up, stays in the middle and is in an avoidance position, the transfer rubber wheel keeps a vacuum function;

and (3) closing the vacuum: when the foil reaches the tape splicing position, the transfer rubber wheel rises and carries out secondary transfer of the adhesive tape, the transfer rubber wheel starts compressed air, and meanwhile, the vacuum of the air transfer rubber wheel is closed.

After the secondary transfer of the tape to products such as foil strips is completed, both the vacuum and the compressed air are turned off.

The operation control logic is repeated as above.

The invention also provides a transferring and rubberizing assembly of the online rubberizing mechanism, which comprises a transferring swing arm and a swing arm driving device capable of driving the transferring swing arm to swing, wherein the transferring swing arm is provided with the transferring rubber wheel device of the online rubberizing mechanism and a rotation driving device for driving the transferring rubber wheel shaft and the transferring rubber wheel to rotate.

Based on the online rubberizing mechanism transfer rubberizing assembly, the invention also provides an online rubberizing mechanism which comprises a rack, and an unreeling assembly, a rubberizing assembly and a glue preparing assembly which are arranged on the rack, wherein the online rubberizing mechanism transfer rubberizing assembly is further arranged on the rack.

As an improvement of the above technical scheme, the transfer swing arm is mounted on the frame through a swing arm mounting shaft, the glue preparation assembly comprises a glue preparation plate, a glue pressing cylinder and a glue pressing head, the swing arm driving device is a secondary stroke driving cylinder, and the transfer swing arm is a secondary stroke swing arm.

The invention has the beneficial effects that: the invention provides a rubber wheel transferring device, a control method, a component and a mechanism of an on-line rubberizing mechanism, wherein a vacuum interface and a compressed air interface are arranged at two ends of a hollow rubber wheel transferring shaft, so that a vacuum generator and a compressed air valve system can be connected by utilizing the vacuum interface and the compressed air interface, the vacuum generator and the compressed air valve system can be arranged outside the rubber wheel transferring shaft through an installation structure, the mass of the rubber wheel transferring shaft is effectively reduced, the rotation inertia of the rubber wheel transferring shaft is effectively reduced, the starting, accelerating, decelerating and stopping performances of the rubber wheel transferring shaft and the rubber wheel transferring shaft are higher, the rotation positioning is quicker, the dynamic control during the starting and high-speed working of the rubber transferring wheel is realized, and the matching whole line connecting speed of the on-line rubberizing is further improved, is favorable for improving the rubberizing efficiency and the rubberizing precision.

In conclusion, the rubber wheel transferring device, the control method, the component and the mechanism of the on-line rubberizing mechanism solve the technical defects that the rotating inertia of a rubber wheel transferring shaft is large, the starting and accelerating performance is influenced, the rubberizing efficiency is reduced and the like in the prior art.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is an assembly view of an in-line taping mechanism of the present invention;

FIG. 2 is a schematic view of the air path arrangement of the rubber wheel transferring device of the linear gluing mechanism in the invention;

FIG. 3 is a state diagram of the mechanism of the present invention in the first transfer of tape;

FIG. 4 is a state diagram of the mechanism of the present invention in the second transfer of the adhesive tape.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. All technical features in the invention can be interactively combined on the premise of not conflicting with each other, and refer to fig. 1-4.

A rubber wheel transferring device of an on-line rubberizing mechanism comprises a rubber wheel transferring shaft 1 with a hollow channel 11 and a plurality of rubber wheels transferring 2 arranged outside the rubber wheel transferring shaft 1, the transfer rubber wheel 2 is provided with a plurality of vacuum holes and a plurality of compressed air holes from inside to outside, the openings at the two ends of the transfer rubber wheel shaft 2 are respectively provided with a vacuum interface 31 and a compressed air interface 32, an in-shaft vacuum main pipeline 41 and an in-shaft compressed air main pipeline 42 are arranged in the hollow channel 11 of the transfer rubber wheel shaft 1, the in-shaft vacuum main pipeline 41 and the in-shaft compressed air main pipeline 42 are respectively communicated with the inner ends of the vacuum interface 31 and the compressed air interface 32 at the shaft ends, the in-shaft vacuum main pipeline 41 is communicated with vacuum holes on the transfer rubber wheel 2 through a vacuum manifold 51, and the in-shaft compressed air main pipeline 42 is communicated with compressed air holes on the transfer rubber wheel 2 through a compressed air manifold 52.

The vacuum interface 31 and the compressed air interface 32 are respectively arranged at two ends of the transfer rubber wheel shaft 1, and other devices such as a vacuum generator, a vacuum control valve, a compressed air generating device and a compressed air valve system can be respectively arranged outside the transfer rubber wheel shaft 1 through the vacuum interface 31 and the compressed air interface 32, so that the inertia of the transfer rubber wheel shaft 1 and the transfer rubber wheel 2 in the rotating process is effectively reduced, the starting and accelerating performances of the transfer rubber wheel shaft 1 and the transfer rubber wheel 2 are improved, the rubber belt transfer efficiency is improved, the control precision is higher, and the speed is higher.

The functions of vacuum, vacuum breaking and compressed air conveying of the transfer rubber wheel 2 can be realized by arranging the vacuum holes and the compressed air holes on the transfer rubber wheel 2.

Preferably, the vacuum interface 31 and the compressed air interface 32 are both rotary joints, vacuum or vacuum breaking operation can be applied to the vacuum holes on the transfer rubber wheel 2 through the vacuum interface 31, the in-shaft vacuum main line 41 and the vacuum manifold 51, and compressed air can be applied to the compressed air holes on the transfer rubber wheel 2 through the compressed air interface 32, the in-shaft compressed air main line 42 and the compressed air manifold 52.

The vacuum interface 31, the in-shaft vacuum main pipeline 41, the vacuum manifold 51 and the vacuum holes on the transfer rubber wheel 2 are matched to form a vacuum pipeline of the on-line rubberizing mechanism transfer rubber wheel device, and the compressed air interface 32, the in-shaft compressed air main pipeline 41, the compressed air manifold 51 and the compressed air holes on the transfer rubber wheel 2 are matched to form a compressed air pipeline of the on-line rubberizing mechanism transfer rubber wheel device.

Vacuum and vacuum breaking operations can be applied to the vacuum holes on the transfer rubber wheel 2 through the vacuum pipeline, and compressed air can be sprayed to the compressed air holes on the transfer rubber wheel 2 through the compressed air pipeline.

The online rubberizing mechanism transfer rubber wheel device opens vacuum and breaks vacuum to the vacuum hole on the transfer rubber wheel 2 through the vacuum pipeline, and the online rubberizing mechanism transfer rubber wheel device conveys compressed air to the compressed air hole on the transfer rubber wheel 2 through the compressed air pipeline.

Preferably, the transfer rubber wheel 2 has an annular cavity 21 inside, the vacuum hole and the compressed air hole are both communicated with the annular cavity 21, the vacuum manifold 51 and the compressed air manifold 52 are both communicated with the annular cavity 21, the external connection position of the vacuum port 31 is connected with a vacuum generator through a pipeline, the external connection position of the compressed air port 32 is connected with a compressed air valve system through a pipeline, and by adopting the structure, some components with larger mass, such as the vacuum generator, the vacuum control valve, the compressed air generating device, the compressed air valve system and the like, can be installed outside the transfer rubber wheel shaft 1, and are not required to be installed on the transfer rubber wheel shaft 1, so that the rotational inertia of the transfer rubber wheel shaft 1 is reduced.

Preferably, the vacuum holes and the compressed air holes formed in the transfer rubber wheel 1 are distributed in a central symmetry manner along the axial direction, so that static balance and dynamic balance of the whole transfer rubber wheel shaft 1 are guaranteed, specifically, the vacuum holes and the compressed air holes are uniformly distributed on the peripheral edge of the transfer rubber wheel 2 in series, and the vacuum holes and the compressed air holes are distributed in a central symmetry manner, so that the static balance and dynamic balance of the transfer rubber wheel shaft 1 and the transfer rubber wheel 2 can be greatly improved, the stability of first transfer of the adhesive tape and second transfer of the adhesive tape is improved, and the adhesive tape sticking quality is indirectly improved. In this embodiment, the vacuum hole and the compressed air hole may be common holes.

Preferably, the vacuum manifold 51 and the compressed air manifold 52 are installed in the hollow channel 11 of the transfer rubber axle 1 and are distributed in a staggered manner in the axial direction in the hollow channel 11. The mounting structure with the staggered distribution can enable all the vacuum manifolds 51 and the compressed air manifolds 52 to be accommodated in the hollow channel 11 of the transfer rubber wheel shaft 1 on one hand, and can also improve the dynamic balance and the static balance of the transfer rubber wheel shaft 1 on the other hand.

Preferably, along the access direction of the in-axis vacuum main line 41 from the vacuum port 31, the last vacuum manifold 51 is a two-way manifold or a three-way manifold, the other vacuum manifolds 51 are three-way manifolds, along the access direction of the in-axis compressed air main line 42 from the compressed air port 32, the last compressed air manifold 52 is a two-way manifold or a three-way manifold, and the other compressed air manifolds 52 are three-way manifolds, and in the specific implementation, the implementer can select the appropriate vacuum manifold 51 and compressed air manifold 52 according to the specific needs.

Based on the rubber wheel transferring device of the online rubberizing mechanism, the invention also provides a vacuum control method of the rubber wheel transferring device of the online rubberizing mechanism, and the control method comprises the following steps:

and (3) vacuum opening: the vacuum is opened when the transferring rubber wheel 2 is pressed down to the rubber preparing plate 71 and the first transferring operation of the adhesive tape is prepared;

and (3) vacuum maintenance: when the transfer rubber wheel 2 is lifted up, stays in the middle and is in a position avoiding position, the transfer rubber wheel 2 keeps a vacuum function;

and (3) closing the vacuum: when the foil 9 reaches the tape splicing position, the transfer rubber wheel 2 is lifted and the adhesive tape is transferred for the second time, the transfer rubber wheel 2 starts compressed air, and meanwhile, the vacuum of the air transfer rubber wheel 2 is closed.

After the secondary transfer of the adhesive tape onto products such as foil strips 9 is completed, both the vacuum and the compressed air are shut off.

The automatic on-line tape gluing can be realized by the repeated work control logic.

Based on the rubber wheel transferring device of the online rubberizing mechanism, the invention also provides a rubber wheel transferring assembly of the online rubberizing mechanism, which comprises a transferring swing arm 6 and a swing arm driving device capable of driving the transferring swing arm 6 to swing, wherein the transferring swing arm 6 is provided with the rubber wheel transferring device of the online rubberizing mechanism and a rotation driving device for driving the rubber wheel transferring shaft 1 and the rubber wheel transferring 2 to rotate.

Based on the online rubberizing mechanism transfer rubberizing assembly, the invention further provides an online rubberizing mechanism which comprises a rack, an unreeling assembly, a rubberizing assembly and a glue preparing assembly, wherein the unreeling assembly, the glue opening assembly, the rubberizing assembly and the glue preparing assembly are mounted on the rack, and the online rubberizing mechanism transfer rubberizing assembly is further arranged on the rack.

Preferably, the transfer swing arm 6 is mounted on the frame through a swing arm mounting shaft 61, the glue preparation assembly comprises a glue preparation plate 71, a glue pressing cylinder 72 and a glue pressing head 73, the swing arm driving device is a secondary stroke driving cylinder, and the transfer swing arm 6 is a secondary stroke swing arm.