Automatic pulling and shearing device for pull strip of dustproof cover of electric toothbrush

Abstract

An automatic pulling and shearing device for a dust cover brace of an electric toothbrush comprises a machine base, a base is arranged on the machine base, two oppositely-arranged L-shaped positioning blocks are arranged on the base, a positioning cavity with an opening in the upper portion is formed between the two L-shaped positioning blocks and the base, a clamping air cylinder is arranged on the upper portion of the opening of the positioning cavity, and the clamping air cylinder comprises a pair of clamping fingers. An opening between the clamping fingers corresponds to an opening of the positioning cavity, the clamping air cylinder is further connected with a lifting air cylinder, a pull strip of a bottom cover assembly arranged on the positioning cavity in a clamped mode is pulled up by the lifting air cylinder after being clamped by the clamping air cylinder, an air shear is further arranged on the upper portion of the opening of the positioning cavity and comprises a pair of rotating shears, and an opening between the shears corresponds to the opening of the positioning cavity. After the brace is pulled up, the reserved end protruding out of the brace hole is sheared off through an air shear. According to the utility model, the clamping and pulling of the brace and the cutting of the reserved end are continuously carried out, the pulling height of the brace is controllable, the air shear can uniformly and quickly shear, and the assembly of the dust cover of the bottom cover assembly is greatly improved.

Description

Technical Field

[0001] The utility model relates to the production and processing field of electric toothbrushes, in particular to an automatic pulling and shearing device for a pull strip of a dust cover of an electric toothbrush. Background Art

[0002] The bottom cover of the electric toothbrush is usually provided with a USB charging port. In order to ensure that the USB charging port is dustproof when not charging, a dust cover that can be pulled and blocked by the USB charging port of the bottom cover is usually provided on the bottom cover. Figure 4 , Figure 5 As shown, the bottom cover and the dust cover are connected by a pull strip, a pull strip hole is provided on the bottom cover, and the dust cover and the pull strip are integrally formed. In order to facilitate the assembly of the pull strip of the dust cover in the pull strip hole of the bottom cover, the pull strip is specially provided with a connecting end and a reserved end, and an undercut is provided between the connecting end and the reserved end. The reserved end is for the needs of process operation. The reserved end passes through the pull strip hole, and the undercut of the pull strip is penetrated from the pull strip hole on one side of the bottom of the bottom cover to the other side through specific tools such as pliers. In this way, after the pull strip penetrates the pull strip hole, the connecting end of the pull strip is connected between the bottom cover and the dust cover, and due to the effect of the undercut, the pull strip connects the bottom cover and the dust cover to prevent it from falling off. After the assembly is completed, the reserved end also needs to be cut off by tools such as scissors.

[0003] Therefore, the existing clamps rely on the operator to use pliers to clamp and lengthen the pull rod, and at the same time use diagonal pliers to cut off the reserved end of the excess pull rod to prevent the reserved end from affecting the subsequent process. Due to the large pulling force of the pull rod, the operator has a large workload and is prone to fatigue for a long time; the shearing position is determined by the operator, and there is no effective anti-mistake measure, which poses the risk of wrong shearing position. Therefore, the existing working mode has many defects that need to be solved urgently. Utility Model Content

[0004] The utility model aims to provide an automatic pulling and cutting device for the dust cover strip of an electric toothbrush, aiming to solve the many defects caused by the manual operation of the dust cover of the electric toothbrush, thereby improving the efficiency of installing the dust cover strip and cutting off the reserved end of the strip, and improving the production quality of the product.

[0005] In view of this, the technical solution provided by the utility model is: an automatic pulling and cutting device for the dust cover strip of an electric toothbrush, comprising a machine base, a base being provided on the machine base, and two relatively arranged L-shaped positioning blocks being provided on the base, a positioning cavity with an opening on the upper part for positioning the bottom cover assembly is formed between the two L-shaped positioning blocks and the base, a clamping cylinder is provided on the upper part of the opening of the positioning cavity, the clamping cylinder comprises a pair of clamping fingers, the opening between the clamping fingers corresponds to the opening of the positioning cavity, the clamping cylinder is also connected to a lifting cylinder, the pull strip of the bottom cover assembly stuck on the positioning cavity is clamped by the clamping cylinder and then pulled up by the lifting cylinder, an air shear is also provided on the upper part of the opening of the positioning cavity, the air shear comprises a pair of rotating scissors, the opening between the scissors corresponds to the opening of the positioning cavity, after the pull strip is pulled up, the reserved end protruding from the pull strip hole is cut off by the air shear.

[0006] Furthermore, a support is provided between the base and the machine base. After the base is supported by the support, a suspension is formed between the base and the machine base, thereby facilitating the collection and treatment of waste at the reserved end after being cut by the gas shear.

[0007] Further, the base is L-shaped, so that a gap is formed between the two sides of the L-shape of the base. Thus, the box for collecting the waste at the reserved end can be conveniently put in or taken out through the gap of the base.

[0008] Furthermore, a time relay is provided on the two side walls of the machine base, and the time relay is used to control the clamping or opening of the clamping cylinder, so as to facilitate the lifting of the cylinder after the pull rod is clamped and the shearing of the reserved end by the gas shear after the pull rod is pulled up.

[0009] The utility model, when assembling the dust cover of the bottom cover assembly, firstly pre-insert the reserved end of the pull strip of the dust cover into the pull strip hole so that the reserved end is partially exposed on the end face of the pull strip hole, the pre-inserted bottom cover assembly is placed in the positioning cavity, the dust cover of the bottom cover assembly is cushioned on the base, and the bottom cover is arranged under the opening of the positioning cavity, the pull strip hole on the bottom cover extends to the upper part through the opening of the positioning cavity, the clamping cylinder is started, the clamping fingers of the clamping cylinder clamp the reserved end exposed on the end face of the pull strip hole, and the pull strip is extracted by lifting the cylinder, so that the undercut on the pull strip passes through the pull strip hole through elastic deformation, thereby making the reserved end completely protrude from the end face of the pull strip hole, and then the scissors of the air shear are used to start cutting the reserved end protruding from the end face of the pull strip hole, the clamping, pulling up and cutting off of the reserved end of the pull strip are continuously performed, which greatly improves the assembly of the dust cover of the bottom cover assembly.

[0010] The utility model can well control the height of the pulling rod by utilizing the lifting cylinder, thereby ensuring that the gas shear can uniformly and quickly shear the reserved end. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is one of the three-dimensional structural schematic diagrams of the utility model.

[0012] Figure 2 This is the second schematic diagram of the three-dimensional structure of the utility model.

[0013] Figure 3 for Figure 2 A is a partial enlarged schematic diagram.

[0014] Figure 4 This is a schematic diagram of the three-dimensional structure of the bottom cover assembly of the electric toothbrush after pre-plugging.

[0015] Figure 5 This is a schematic diagram of the three-dimensional exploded structure of the bottom cover assembly of an electric toothbrush.

[0016] Among them: 1-machine base, 11-base, 12-start button, 13-emergency stop button, 14-time relay, 15-on / off key, 16-cylinder frame, 17-gas shear bracket, 18-support, 2-L-type positioning block, 3-lifting cylinder, 4-clamping cylinder, 41-clamping finger, 5-gas shear, 51-scissors, 6-bottom cover assembly, 61-dust cover, 62-bottom cover, 621-pull rod hole, 63-pull rod, 631-connecting end, 632-reserved end, 633-undercut. DETAILED DESCRIPTION

[0017] The following is a brief description of the implementation of the present utility model in conjunction with the accompanying drawings.

[0018] Reference Figure 4 , Figure 5 As shown, the bottom cover assembly 6 includes a bottom cover 62 and a dust cover 61. A USB charging port is provided on the bottom cover 62. The dust cover 61 is used to cover the USB charging port for dust prevention when it is not in use. The bottom cover 62 and the dust cover 61 are connected by a pull strip 63. A pull strip hole 621 is provided on the bottom cover 62. The dust cover 61 and the pull strip 63 are integrally formed. In order to facilitate the assembly of the pull strip 63 of the dust cover 61 in the pull strip hole 621 of the bottom cover 62, the pull strip 63 is specially provided with a connecting end 631 and a reserved end 632. A buckle 633 is provided between the connecting end 631 and the reserved end 632. Thus, the buckle 633 is used to prevent the bottom cover 62 and the dust cover 61 from falling off after the pull strip 63 is connected.

[0019] An automatic pulling and shearing device for the dust cover pull strip of an electric toothbrush, referring to 1- Figure 3, including a machine base 1, a base 11 is provided on the machine base 1, two L-shaped positioning blocks 2 are arranged opposite to each other on the base 11, a positioning cavity with an opening on the upper part for positioning the bottom cover assembly 6 is formed between the two L-shaped positioning blocks 2 and the base 11, a clamping cylinder 4 is provided on the upper part of the opening of the positioning cavity, the clamping cylinder 4 includes a pair of clamping fingers 41, the opening between the clamping fingers 41 corresponds to the opening of the positioning cavity, the clamping cylinder 4 is also connected to a lifting cylinder 3, the lifting cylinder 3 is connected and fixed by a cylinder frame 16 fixed on the machine base 1, the clamping cylinder 4 is connected to the telescopic rod end of the lifting cylinder 3, the positioning cavity is used to position the bottom cover assembly 6, the bottom cover assembly 6 is a pre-inserted bottom cover assembly 6, and the pre-inserted bottom cover assembly 6 refers to the reserved end 63 of the pull strip 63 of the dust cover 61 2 is pre-inserted into the draw rod hole 621 so that the reserved end 632 is partially exposed on the end surface of the draw rod hole 621. When positioning, the dust cover 61 of the bottom cover assembly 6 is first cushioned on the base 11, and the bottom cover 62 is clamped under the opening of the positioning cavity. The draw rod hole 621 on the bottom cover 62 extends through the opening of the positioning cavity at the upper part, so that the reserved end 632 is correspondingly partially exposed at the upper part of the opening of the positioning cavity. The reserved end 632 of the draw rod 63 of the bottom cover assembly 6 clamped on the positioning cavity is clamped by the two clamping fingers 41 of the clamping cylinder 4 and then pulled up by the lifting cylinder 3. The lifting cylinder 3 can control the height of the positioning and pulling up the draw rod 63, so that the undercut 633 on the draw rod 63 is elastically squeezed and quickly passes through the draw rod hole 621, thereby achieving the purpose of pulling up the draw rod 63.

[0020] An air shear 5 is also provided at the upper part of the opening of the positioning cavity. The air shear 5 is fixedly connected via an air shear bracket 17 fixed on the machine base 1. The air shear 5 includes a pair of rotating scissors 51. The scissors 51 extend at the upper part of the opening of the positioning cavity. The opening between the scissors 51 corresponds to the opening of the positioning cavity. After the pull rod 63 is pulled up, the reserved end 632 protruding from the pull rod hole 621 is correspondingly located between the openings of the scissors 51. When the air shear 5 is started, the scissors 51 of the air shear 5 cut off the reserved end 632 between the openings of the scissors 51.

[0021] The reserved end 632 after being cut off will cause the device to generate a large amount of waste, which can be collected and processed by a waste collection box. In order to realize the waste collection and processing of the reserved end 632, in this embodiment, a support 18 is provided between the base 11 and the machine base 1. After the base 11 is supported by the support 18, a suspension is formed between the base 11 and the machine base 1. The suspended part of the base 11 and the machine base 1 can be used to place the waste collection box. In a more preferred setting, the base 11 is L-shaped, so that a gap is formed between the two sides of the L-shape of the base 11. The setting of the gap is to facilitate the reserved end 632 to fall off due to weight after being cut off, thereby avoiding the reserved end 632 being reserved on the L-shaped positioning block 2, and to facilitate the box for collecting waste from the reserved end to be placed in or taken out.

[0022] In this embodiment, a time relay 14 is provided on the two side walls of the base 1. The time relay 14 is used to control the clamping or opening of the clamping cylinder 4. The clamping or opening of the clamping cylinder 4 coordinates with the actions of the lifting cylinder 3 and the gas shear 5, thereby facilitating the lifting of the lifting cylinder 3 after clamping the pull rod 63 and the cutting of the reserved end 632 by the gas shear 5 after the pull rod 63 is pulled up.

[0023] In this embodiment, a switch key 15 and a start key 12 are provided on the side wall of the power socket 1. The switch key 15 is used to open the gas circuit of the device, and the start key 12 is used to open the cylinder after the pre-plugged bottom cover assembly 6 is manually positioned in the positioning cavity. An emergency stop key 13 is also provided at the front end of the power socket 1. The emergency stop key 13 is used to deal with emergency situations and can terminate the operation of the clamping cylinder 4, the lifting cylinder 3 or the gas shear 5, so as to realize the emergency stop of the device in an emergency state.

[0024] The above embodiments only express the implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. An automatic pulling and cutting device for a dust cover strip of an electric toothbrush, comprising a base, characterized in that: The machine base is provided with a base, and the base is provided with two L-shaped positioning blocks arranged opposite to each other. A positioning cavity with an opening on the upper part for positioning the bottom cover assembly is formed between the two L-shaped positioning blocks and the base. A clamping cylinder is provided on the upper part of the opening of the positioning cavity. The clamping cylinder includes a pair of clamping fingers, and the opening between the clamping fingers corresponds to the opening of the positioning cavity. The clamping cylinder is also connected to a lifting cylinder. The pull rod of the bottom cover assembly stuck on the positioning cavity is clamped by the clamping cylinder and then pulled up by the lifting cylinder. An air shear is also provided on the upper part of the opening of the positioning cavity. The air shear includes a pair of rotating scissors, and the opening between the scissors corresponds to the opening of the positioning cavity. After the pull rod is pulled up, the reserved end protruding from the pull rod hole is cut off by the air shear.

2. The automatic pulling and cutting device for the dust cover strip of an electric toothbrush according to claim 1, characterized in that: A support is provided between the base and the machine base.

3. The automatic pulling and cutting device for the dust cover strip of an electric toothbrush according to claim 2, characterized in that: The base is L-shaped so that a gap is formed between two sides of the L-shape of the base.

4. The automatic pulling and cutting device for the dust cover strip of an electric toothbrush according to any one of claims 1 to 3, characterized in that: Two side walls of the machine base are provided with time relays, and the time relays are used to control the clamping or opening of the clamping cylinder.

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