Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
  • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
  • B26B19/24—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers specially adapted for shearing animals, e.g. sheep
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
  • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
  • B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive

Definitions

• the housing of the large animal shearing machines which serves both as a handle and to accommodate the drive unit, has a shearing head at one front end, which is equipped with a shearing head holder for receiving a shearing head.
• the shearing head consists of a first cutting plate and a second cutting plate, whereby the first cutting plate can be pivoted back and forth relative to the stationary second cutting plate to generate a cutting motion.
• Known large animal shearing machines of the type mentioned above have the disadvantage that the transmission of the rotary motion of the drive shaft into an oscillating motion The movement of the shearing head is complex and therefore expensive, and due to the inclined orientation of the shearing head relative to the shearing machine body (at an angle of more than 30°), it is also prone to malfunctions. Furthermore, known large animal shearing machines have the disadvantage that screw connections are used for changing the shearing head, which promotes incorrect positioning of the shearing head, potentially leading to malfunctions during operation.
• the invention aims to provide a large animal shearing machine that is inexpensive to manufacture and easy to handle.
• a characteristic feature of the large animal shearing machine according to the invention is that the shearing head holder, which serves to receive and position the shearing head on the large animal shearing machine, is adjustable on the shearing machine head between a mounting position for positioning and removing the shearing head and an operating position. Furthermore, the longitudinal axis of the motor output shaft, a longitudinal axis of an eccentric shaft coupled to the motor output shaft, and a pivot axis of a rocker arm driven by the eccentric shaft and engaged with the first cutting plate in the operating position are aligned parallel to each other.
• the inventive alignment of the motor output shaft, the longitudinal axis of the eccentric shaft coupled to the motor output shaft, and the pivot axis of the rocker arm driven by the eccentric shaft allows for a particularly simple and cost-effective design, while simultaneously minimizing vibrations during operation of the large animal shearing machine.
• the connection of the rocker arm to the eccentric shaft can be implemented in a particularly simple and cost-effective manner, thus ensuring reliable transmission of the rocker arm's movement to the shearing head.
• the inventive arrangement enables a reduction of the rotary motion of the motor output shaft to the eccentric shaft, so that a high drive torque can be ensured, which is necessary for large animal shearing machines due to the hair thickness and fur density of the animals in order to guarantee reliable operation.
• the design of the shearing head featuring a shearing head holder adjustable between a mounting position and an operating position, allows for particularly easy and convenient replacement of the shearing head and secure positioning in the operating position. This is especially important since no disassembly of the shearing head, i.e., separation of the first cutting plate from the second, is required.
• the pre-assembled shearing head In the mounting position of the shearing head holder, the pre-assembled shearing head can be easily removed, and the ready-to-use shearing head can be positioned. By moving the shearing head holder into the operating position, the shearing head is securely positioned, ensuring trouble-free operation of the large animal shearing machine.
• the inventive design of the large animal shearing machine makes it possible to design the rocker arm such that its longitudinal axis extends essentially perpendicular to its pivot axis, thereby enabling a particularly simple connection of the rocker arm to the shearing head in the operating position.
• the cutting plane defined by the first and second cutting plates can be aligned essentially parallel to the longitudinal axis of the motor output shaft.
• the cutting plane defined by the first and second cutting plates intersects the longitudinal axis of the motor output shaft at an angle of less than 15°, preferably less than 10°, and particularly preferably 8°.
• the cutting plane defined by the first and second cutting plates is aligned at the aforementioned angles in the operating position of the shear head holder.
• Such alignment can be achieved particularly easily by positioning the rocker arm in the contact area with the first cutting plate in such a way as...
• the design allows the rocker arm to oscillate and drive a first cutting plate that is slightly inclined relative to the perpendicular to the rocker arm's longitudinal axis.
• the rocker arm and the first cutting plate are not rigidly connected but are engaged in a reciprocating engagement. This engagement can be achieved, for example, by having the rocker arm engage with its end opposite the eccentric into a rocker arm receptacle on the first cutting plate.
• the advantageously provided orientation of the first and second cutting plates, and in particular the especially preferred orientation of the cutting plate such that the cutting plane defined by it intersects the longitudinal axis of the motor output shaft at an angle of 8°, enables particularly good handling of the large animal shearing machine.
• the longitudinal axis of the housing runs essentially parallel to the longitudinal axis of the motor output shaft. This embodiment of the invention thus allows for ergonomic use of the large animal shearing machine and therefore increases user comfort during operation.
• the shear head holder on the shearing machine head is generally freely selectable.
• the shear head holder is arranged on a shear head hinge that is detachably connected to a head housing base body of the shearing machine head and is pre-tensioned in the direction of the mounting position.
• the shear head holder is a component of a shear head hinge, which is detachably connected to a head housing base of the shearing machine head, for example, by screws.
• the shear head holder is thus adjustable relative to the head housing base between the mounting position and the operating position, with the shear head hinge being fixedly connected to the head housing base via a base support. This embodiment of the invention ensures reliable and secure alignment of the shear head on the large animal shearing machine. in the operating position.
• An advantageously provided preload of the shear head holder in the direction of the assembly position further ensures that the shear head holder remains stable in the assembly position after it has been moved from the operating position to the assembly position, in which a shear head can then be conveniently removed from the shear head holder or attached to it.
• the shear head holder can be locked to the shear head hinge in the operating position by means of a positive and/or non-positive locking mechanism.
• a positive and/or non-positive locking mechanism After the shear head is mounted on the shear head holder and moved into the operating position against the spring preload, its position in the operating position is secured by a positive and/or non-positive locking mechanism.
• the locking mechanism being effected, for example, by detent elements, preferably pre-tensioned detent elements such as a detent slide arranged on the shear head hinge, which ensure a positive locking of the shear head holder to the shear head hinge.
• the shear head holder is moved from the operating position to the assembly position, preferably with the aid of a preload.
• the connection between the motor output shaft and the eccentric shaft is designed as a spur gear drive.
• the spur gear drive is characterized by the fact that it enables a particularly simple and cost-effective reduction of the rotary motion of the motor output shaft into a rotary motion of the eccentric shaft.
• the spur gear drive allows for low-friction bearings, resulting in high efficiency.
• the reduction ratio required for shearing operation can also be set particularly easily and cost-effectively using the spur gear drive.
• the low noise level of the spur gear drive is also advantageous, further improving the ergonomics of the large animal shearing machine during operation.
• the bearing arrangement of the eccentric shaft and the rocker arm can, in principle, be designed in any way.
• the head housing base body which is advantageously designed to accommodate the shear head hinge, is designed to support the eccentric shaft and the rocker arm and is detachably connected to the shearing machine base body.
• the preferably one-piece head housing base is shaped such that it provides bearing options for the eccentric shaft and the rocker arm, thus eliminating the need for separate devices for receiving bearings for the eccentric shaft and the rocker arm.
• the head housing base is designed to allow direct reception of the eccentric shaft and the rocker arm, or at least is shaped to provide simple reception of, for example, bearings and/or bushings for the eccentric shaft and a bearing axis of the rocker arm.
• the detachable connection to the shearing machine body allows for particularly easy assembly and, in case of malfunction, disassembly, which facilitates simple repairs and thus increases the durability of the large animal shearing machine.
• the head housing body for accommodating the shearing head hinge it is possible to conveniently arrange the components of the shearing head—namely the shearing head, the eccentric shaft, the rocker arm, and the shearing head holder—on the head housing body and connect them together with the shearing machine body.
• the head housing base is made of a plastic, in particular a thermoplastic or thermoset.
• a plastic in particular a thermoplastic or thermoset.
• This embodiment of the invention enables, in a particularly simple and convenient manner, the advantageously provided one-piece design of the head housing base for mounting the eccentric shaft and the rocker arm, as well as for receiving the shear head holder.
• the head housing base It can be manufactured using known plastic molding processes.
• the use of a plastic, particularly a thermoplastic or thermoset is characterized by low weight and, due to the material properties, low vibration, which further enhances the user comfort of the shearing machine.
• Using a plastic for the head housing also decouples the drive mechanism from the shearing machine housing, which further dampens vibrations.
• additional vibration damping can be achieved by connecting the shear head hinge to the head housing body via a vibration-damping screw connection.
• a vibration-damping connection is understood to be one in which additional damping elements are incorporated in the area of the screw connection to reduce the resulting vibrations.
• FIG. 1 An embodiment of a large animal shearing machine 1 is shown in Figure 1 shown in a perspective view.
• the large animal shearing machine 1 has a shearing machine base 2, which is designed to accommodate a blade (not shown here),
• the drive unit comprising an electric motor also serves as the handle of the large animal shearing machine 1.
• a shearing head 3 is attached to the front of the shearing machine body 2, to which a shearing head 15, comprising a first cutting plate 16 and a second cutting plate 17, is detachably arranged.
• the shearing head 3 in addition to receiving the shearing head 15, serves to convert a rotary motion of a motor output shaft 7 of the electric motor (not shown) into an oscillating motion of the first cutting plate 16 relative to the second cutting plate 17, in order to achieve the desired cutting motion.
• the shearing head 3 has an eccentric shaft 10 coupled to the motor output shaft 7 via a gear 6, at the end of which opposite the gear 6 an eccentric is arranged.
• the eccentric 11 is in turn arranged in a receptacle 14 of a rocker arm 12, which is pivotably mounted via a rocker arm bolt 13 extending parallel to the eccentric shaft 10.
• the shearing head 3 has a head housing base 5 to support the eccentric shaft 10, the rocker arm bolt 13, and a shear head hinge 19, which serves to detachably hold the shear head 15.
• the head housing base 5, which is formed in one piece from a plastic material, has receptacles for bearings 8 and 9 for the eccentric shaft 10 and for the rocker arm bolt 12.
• the arrangement of the shear head hinge 19 on the head housing base 5 is achieved via fastening screws 25, by means of which the shear head hinge 19 can be fixed to the head housing base body 5.
• the shear head hinge 19 has a base support 20, by means of which the shear head hinge 19 is fixedly attached to the head housing base body 5.
• the shear head hinge 19 also has a shear head holder 23, which extends from the base support 20 of the shear head hinge 19 into the Figures 1 to 5
• the operating position shown can be pivoted about a pivot bolt 24 into a mounting position not shown here.
• the shear head 15 can be slid onto or removed from the shear head holder 23. After mounting the shear head 15 on the shear head holder 23, it is rotated around the pivot pin 24 into the Figures 1 to 5
• the operating position shown is pivoted. In the operating position, clamping holders 22 rest laterally against the shear head hinge 19 on the shear head 15, and a slide 21 releasably locks the shear head 15.
• the slide 21 is in the direction of the Figures 1 to 5
• the operating position shown is pre-tensioned and thus ensures reliable positioning of the shear head 15 in the operating position.
• a rocker arm receptacle 28, formed by a recess in the first cutting plate 16, serves to receive the end of the rocker arm 12 opposite the receptacle 14.
• the oscillating movement of the rocker arm 12, in conjunction with the first cutting plate 16, thus causes an oscillating movement of the first cutting plate 16 relative to the stationary second cutting plate 17.
• a shear head spring 18, fixed to the second cutting plate 17 by means of fastening screws 25, ensures reliable contact between the first cutting plate 16 and the second cutting plate 17.
• the head housing base 5 is made of a vibration-damping plastic and is connected to the shearing machine base 2 by means of fastening screws 27a, 27b.
• fastening screws 26 extending through receptacles on the head housing base 5 serve to fix the machine head housing 4 to the head housing base 5.

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• Life Sciences & Earth Sciences (AREA)
• Forests & Forestry (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Animal Behavior & Ethology (AREA)
• Animal Husbandry (AREA)
• Crushing And Pulverization Processes (AREA)
• Housing For Livestock And Birds (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=96701613

Family Applications (1)

Country Status (2)

Citations (6)

• 2024
  • 2024-08-19 DE DE102024123626.4A patent/DE102024123626A1/de active Pending
• 2025
  • 2025-08-15 EP EP25196158.7A patent/EP4699754A1/fr active Pending

Patent Citations (6)

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