Automatic installation machine for yarn shear sheath

Abstract

The utility model relates to scissors production and processing equipment, in particular to a device for automatically installing a sheath on a pair of yarn scissors. Comprising a rack, a limiting device, an ejecting device and a pushing device. The limiting device, the jacking device and the pushing device are all fixed on the rack; the yarn scissors can be fixed on the rack by the limiting device, and the cutting edge cannot be opened and closed; the machine frame comprises a pressing buckle bottom plate, and two discharging holes are formed in the pressing buckle bottom plate and used for fixing the position of the sheath. The material jacking device is mounted below the material placing hole and can jack up the sheath placed in the material placing hole; the pushing and pressing device can automatically push the sheath jacked up by the material jacking device from the two sides to the middle, and the sheath is arranged on a yarn shear handle in a sleeving mode through extrusion. According to the device for automatically installing the sheath on the yarn scissors, the sheath can be automatically installed on the yarn scissors, so that the working efficiency is improved, and the safety of the installation work can be improved.

Description

Technical Field

[0001] This application relates to scissor manufacturing equipment, and in particular to a device for automatically installing sheaths on yarn scissors. Background Technology

[0002] The yarn shears consist of two handle units connected at one end and movable towards or away from each other at the other end. Each handle unit includes a blade and a handle. During use, the index finger and thumb are typically used to press the handle, causing the blade to close and cut the material. However, yarn shears usually have thin handles and sharp blades. To make the yarn shears more slip-resistant and comfortable to use, we install a protective sleeve on the handle. When installing the sleeve manually, the yarn shears need to be held and the sleeve squeezed firmly to cover the handle. However, due to the thin handle and sharp blade, the installation process poses safety risks to the installer. Furthermore, individual differences in the installation position and the amount of force applied result in inconsistent sleeve tightness, leading to inconsistent product quality and low efficiency. Summary of the Invention

[0003] In view of this, this application provides an automatic sheath installation machine for yarn shears, which can automatically install sheaths on yarn shears, thereby standardizing product quality, improving work efficiency, and effectively preventing safety accidents such as workers' hands being accidentally cut by the sharp edges of the yarn shears.

[0004] To achieve the above objectives, this application employs the following technical solution:

[0005] An automatic yarn shear sheath installation machine, characterized in that: it includes a frame and a yarn shear limiting device, a sheath ejecting device and a sheath pushing device respectively installed on the frame; the frame includes a pressing base plate for placing the yarn shear to be processed;

[0006] The yarn shear limiting device includes a positioning block fixedly installed in the middle of the upper part of the snap-on base plate, which is used to insert between the two blade handle units of the yarn shear to position the yarn shear and limit the degree of blade closure;

[0007] The snap-on base plate is provided with two material feeding grooves located on the horizontal sides of the positioning block and corresponding to the longitudinal position of the handles of the two blade units of the yarn shears to be installed with the protective sleeves, for placing the protective sleeves.

[0008] The sheath top material device can move up and down to lift the sheath placed in the material feeding groove to a height position corresponding to the handles of the two blade handle units of the yarn shears placed on the snap-on base plate and clamped and positioned on the positioning block.

[0009] The sheath pushing device includes two groups of sheath lifting devices arranged on both sides of the positioning block, sheath pushing units arranged on both sides of the sheath lifting devices and capable of pushing the sheaths from both sides to the middle, and sheath pressing units arranged on both sides of the sheath pushing units and capable of pressing the sheaths.

[0010] By the above design, the shears to be processed are placed on the pressing plate and positioned by the positioning block, the position to be installed of the shears is determined, the blade of the shears keeps a predetermined opening angle and cannot be completely closed, the sheaths are placed in the material placing holes arranged on both sides of the shears, the initial position of the sheaths before installation is limited by the material placing holes, so that the installation position of the sheaths is guaranteed, the sheath lifting devices are started, the sheaths are lifted to the height corresponding to the handles of the two handle units, the sheath pushing devices are started to push the sheaths from both sides to the middle, and the sheaths are pressed on the handles by the sheath pressing units, so that the automatic installation of the sheaths of the shears is realized, and the design goal is achieved.

[0011] In order to improve the positioning effect of the shears, the technical scheme is further improved as follows: the shears limiting device further includes two limiting blocks fixedly installed on the pressing plate and arranged on both sides of the positioning block in the transverse direction, and the gap between the limiting block and the positioning block can accommodate the two handle units of the shears so as to limit the inner and outer positions of the two handle units of the shears.

[0012] In order to adapt to different types of shears, the technical scheme is further improved as follows: the positioning block and the limiting block are detachably installed on the pressing plate.

[0013] In order to further press the shears and prevent the shears from jumping, the technical scheme is further improved as follows: the shears limiting device further includes a pressing device fixedly installed on the frame and located above the limiting block, the pressing device includes a blade tip pressing plate and a pressing pushing device for driving the blade tip pressing plate to move up and down, the bottom of the blade tip pressing plate is stepped in the transverse direction, the lower blade of the two handle units of the shears placed on the pressing plate is placed directly below the lower step of the blade tip pressing plate, and the upper blade of the two handle units of the shears is placed directly below the upper step of the blade tip pressing plate, so that the two blades of the shears are further staggered in the height direction when the pressing pushing device drives the blade tip pressing plate to move downward. In this way, when the sheath pushing device pushes the sheaths to be installed on the handles of the two handle units of the shears, the blade edges of the two blades are prevented from being damaged by touching each other.

[0014] In order to further improve the automation, the technical scheme is further improved as follows: the pressing pushing device is a pressing cylinder fixedly installed on the frame, the piston rod of the pressing cylinder can move vertically, and the blade tip pressing plate is fixedly installed on the lower end of the piston rod.

[0015] To further improve automation, the technical scheme of the above utility model is further improved as follows: the sheath automatic mounting machine further comprises a sheath feeding device, the sheath feeding device comprises two sheath feeding conveying tracks for successively conveying sheaths to corresponding discharge grooves and arranged on one side of the buckle pressing bottom plate in the longitudinal direction and spaced apart in the transverse direction, and a feeder fixedly installed on the rack below the two sheath feeding conveying tracks and used to drive the sheaths in the sheath feeding conveying tracks to move towards the corresponding discharge grooves, and two feeding grooves are formed in the buckle pressing bottom plate and respectively communicate with the corresponding sheath feeding conveying track and discharge groove.

[0016] To further improve automation, the technical scheme of the above utility model is further improved as follows: the feeder is a linear vibration feeder.

[0017] To further improve automation, the technical scheme of the above utility model is further improved as follows: the bottom of the discharge groove is provided with a material lifting hole penetrating downward to the bottom surface of the buckle pressing bottom plate, the sheath material lifting device comprises a feeding block and a material lifting cylinder used to drive the feeding block to move up and down, the feeding block comprises two material lifting protrusions respectively corresponding to the material lifting hole and movable up and down, and a bottom connecting block fixedly connected between the bottoms of the two material lifting protrusions and located below the buckle pressing bottom plate and fixedly installed on the top end of the piston rod of the material lifting cylinder. The sheath placed in the discharge groove can be lifted to a height position suitable for the handle through the material lifting protrusion, and the bottom connecting block can define the limit position of the upward movement of the material lifting protrusion.

[0018] To further improve automation, the technical scheme of the above utility model is further improved as follows: each sheath pushing unit comprises a pushing block and a pushing cylinder, the two pushing cylinders are respectively located on the transverse outer sides of the corresponding discharge grooves and fixedly installed on the buckle pressing bottom plate, and the pushing block is respectively installed on the end portion of the piston rod of the corresponding pushing cylinder and can move in the transverse direction under the driving of the piston rod.

[0019] From the above technical scheme, the application has at least the following advantages and positive effects: automatic installation of the sheath of the yarn scissors is realized, the safety risk to the installation workers is reduced, the product quality is ensured to be uniform, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure schematic diagram of the conveying and material receiving device of the application is shown in the figure.

[0021] Figure 2 The exploded view of the material lifting device in the embodiment of the application is shown in the figure.

[0022] Figure 3 The assembly schematic diagram of the limiting device and the pushing device in the embodiment of the application is shown in the figure.

[0023] Label explanation: 1, rack; 6, scissors; 7, sheath; 11, buckle bottom plate; 21, limit block; 22, positioning block; 23, knife tip pressing plate; 24, pressing cylinder; 31, pushing cylinder; 32, push block; 41, top feeding cylinder; 42, feeding groove; 43, bottom connecting block; 44, top feeding block; 45, top feeding hole; 51, feeder; 52, feeding track. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings. The terms used in the embodiment part of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0025] In the operation of manually installing the sheath on the yarn scissors, the handle is thin, the blade is sharp, and the head of the blade is sharp, which brings safety risks to the installer during the installation process. In addition, due to individual differences, the installation position of the sheath is different, the force is different, and the tightness of the sheath is different, which leads to inconsistent product quality and low efficiency.

[0026] Based on the above technical problems, the present application provides a yarn scissors sheath automatic installation machine.

[0027] As shown in Figure 1 The utility model device includes rack 1 and yarn scissors limiting device, sheath top feeding device and sheath pushing device respectively installed on rack 1, wherein rack 1 includes buckle bottom plate 11 for placing the yarn scissors 6 to be processed.

[0028] The yarn scissors limiting device is used to determine the installation position of the yarn scissors 6 on the buckle bottom plate 11 and avoid the situation that the blade gap is too tight under the extrusion pressure of pushing and installing the sheath. Therefore, the positioning block 22 is arranged at the middle part above the buckle bottom plate 11. During processing, the yarn scissors 6 are directly placed on the buckle bottom plate 11, and the positioning block 22 is inserted between the two blade handle units of the yarn scissors 6. The positioning block 22 is used to position the yarn scissors 6 and limit the closing degree of the blade gap. The shape of the positioning block 22 is adapted to the shape of the inner side of the two blade handle units. In order to strengthen the limiting of the yarn scissors 6, the yarn scissors limiting device is further improved in some embodiments, as shown in Figure 2 Two limiting blocks 21 are added to the transverse two sides of the positioning block 22. The gap between the limiting block 21 and the positioning block 22 can be inserted into the two blade handle units of the yarn scissors 6, so as to fix the two blade handle units of the yarn scissors 6. Since the models of the yarn scissors 6 to be processed are different, the shape and size of the positioning block 22 and the limiting block 21 need to be tailor-made according to the model of the yarn scissors 6. Therefore, in order to be compatible with different models of the yarn scissors 6, the limiting block 21 and the positioning block 22 are respectively detachably installed on the buckle bottom plate 11.

[0029] After determining the processing position of the yarn shears 6, the sheaths 7 can be placed. This involves placing two sheaths 7 on the snap-fit ​​base plate 11, positioned on the outside of the two handles of the yarn shears 6. To ensure the installed sheaths 7 are positioned on the corresponding sides of the handles and to maintain consistent quality for each product, the snap-fit ​​base plate 11 has two placement grooves 42 on the horizontal sides of the positioning block 22, corresponding to the longitudinal positions of the sheaths to be installed on the handles of the two blade units of the yarn shears 6. During placement, simply place the two sheaths 7 directly into the placement grooves 42. To facilitate adjustment of the installation height of the sheaths 7, their initial placement position is generally lower than the surface of the snap-fit ​​base plate 11. Therefore, a sheath lifting device can be used to lift the sheaths 7 to an appropriate height to accommodate the corresponding handle height positions of the two blade units of the yarn shears 6. The sheath lifting device can also employ other methods such as... Figure 2 The feeding device shown has a feeding hole 45 extending downwards to the bottom surface of the pressing base plate 11 at the bottom of the feeding groove 42. The feeding device includes a feeding block and a feeding cylinder 41 for driving the feeding block to move up and down. The feeding cylinder 41 is fixedly installed on the frame 1 below the pressing base plate 11. The feeding block includes two feeding protrusions 44 that are respectively movably inserted into the feeding hole 45 and can move up and down, and a bottom connecting block 43 fixedly connected between the bottoms of the two feeding protrusions 44, located below the pressing base plate 11, and fixedly installed at the top of the piston rod of the feeding cylinder 41. In specific implementations, the sheath feeding device can also use a screw and nut adjustment device or other devices that facilitate lifting and adjustment. The sheath feeding device can also be directly installed at the bottom of the feeding groove 42.

[0030] In specific implementation, the sheath 7 can be placed manually into the feeding groove 42, or it can be placed automatically by a robotic arm or conveyor line. To further improve the automation of the system, an automatic sheath feeding device is used in some embodiments. This device includes two sheath 7 feeding conveyor tracks 52 located on one longitudinal side of the snap-fit ​​base plate 11 and spaced laterally to successively feed the sheath 7 into the corresponding feeding groove 42, and a feeder 51 fixedly installed on the frame 1 and located below the two sheath 7 feeding conveyor tracks 52 to drive the sheath 7 in the sheath 7 feeding conveyor tracks 52 to move toward the corresponding feeding groove 42. The snap-fit ​​base plate 11 has two feed slots that connect the corresponding sheath 7 feeding conveyor tracks 52 and the feeding groove 42 respectively, wherein the feeder 51 is preferably a linear vibrating feeder 51.

[0031] After the sheath 7 is lifted by the ejector device to the height corresponding to the handle of the yarn shear 6, the sheath pushing device needs to push the sheath 7 from both sides toward the handle of the yarn shear 6 until the sheath 7 is fitted onto the handle of the yarn shear 6. The pushing of the sheath 7 is carried out as follows: Figure 3The pushing method shown includes a pusher block 32 and a pusher cylinder 31 for each sheath 7. The two pusher cylinders 31 are located on the lateral outer side of the corresponding material discharge groove 42 and are fixedly installed on the snap-fit ​​base plate 11. The pusher block 32 is installed on the piston rod end of the corresponding pusher cylinder 31 and can move laterally under the drive of the piston rod. In some embodiments, the sheath 7 can also be pushed by a screw and nut transmission mechanism or a robotic arm.

[0032] In some embodiments, a vertical pressing device is added to fix the yarn shear 6 vertically. The pressing device includes a blade tip pressing plate 23 and a pressing and pushing device for driving the blade tip pressing plate 23 to move up and down, such as... Figure 3 As shown, the pressing and pushing device consists of a pressing cylinder 24, which is mounted on the frame 1. The piston rod of the pressing cylinder 24 can move vertically up and down. The blade tip pressing plate 23 is fixedly mounted on the lower end of the piston rod. The bottom of the blade tip pressing plate 23 is stepped in the horizontal direction. When the yarn shears 6 are placed in the positioning device on the pressing base plate 11, the piston of the pressing cylinder 24 drives the blade tip pressing plate 23 to press down. The blade of the two blade handle units of the yarn shears 6 located at the lower position is placed directly below the lower step of the blade tip pressing plate 23, and the blade of the two blade handle units of the yarn shears 6 located at the higher position is placed directly below the higher step of the blade tip pressing plate 23. As the blade tip pressing plate 23 moves downward, it can further stagger and press the blades of the two blade handle units of the yarn shears 6 in the vertical direction, thereby preventing the yarn shears 6 from jumping out when pushed horizontally and preventing the two blades from intersecting and causing damage to the cutting edge. To prevent indentations and wear on the blade surface caused by pressure applied by the blade tip pressure plate 23, the blade tip pressure plate 23 can be made of elastic material or have an elastic pad added to its surface. In some embodiments, a pressure rod can replace the pressure cylinder 24. One end of the pressure rod is mounted on the frame 1, and the blade tip pressure plate 23 is installed in the middle of the pressure rod. When the yarn shears 6 are placed in the positioning device on the pressure buckle base plate 11, the pressure rod is pressed down, causing the blade tip pressure plate 23 to press the yarn shears 6 to achieve vertical fixation.

[0033] The following is a brief description of the working process and usage method of the automatic yarn shear sheath installation machine according to the above embodiments:

[0034] When the device is running, the shears sheath enters the feeding track, under the action of the feeder, the sheath orderly advances in the feeding track, and enters the discharging groove of the pressing buckle bottom plate; the shears limiting device limits the position to be installed of the shears; the cutter tip pressing plate moves first, presses down the cutter tip on one side of the scissors, and makes the two blades staggered, so as to avoid damage of the blade edge in the clamping installation process; the feeding block moves upward, and sends the two sheaths to the corresponding height position of the handle; the two side push blocks move, and push the sheaths to the handle, and the inner groove of the sheath clamps the handle. After the sheath is installed in place, the push block return, the feeding block return, the cutter tip pressing plate return and the product removal are sequentially completed. The work is repeatedly carried out in this way.

[0035] In the description of the embodiments of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixed connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0036] The terms "first", "second", "third", "fourth" and the like (if any) are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0037] In the description of the embodiments of the present application, the terms "one embodiment", "some embodiments", "specific embodiments" and the like are described, which means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, and not to limit them; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A yarn scissor sheath automatic mounting machine characterized by: The application relates to a yarn shear limiting device, a sheath top feeding device and a sheath pushing device which are respectively installed on a rack (1), wherein the rack (1) comprises a pressing buckle bottom plate (11) for placing a yarn shear (6) to be processed; the yarn shear limiting device comprises a positioning block (22) which is fixedly installed above the middle part of the pressing buckle bottom plate (11) and is used for being inserted between two handle units of the yarn shear (6) to position the yarn shear (6) and limit the closing degree of a blade edge; two material placing grooves (42) are arranged on the pressing buckle bottom plate (11) and correspond to the longitudinal positions of the handles of the two handle units of the yarn shear (6) on which the sheaths (7) are placed; the sheath top feeding device can be lifted and lowered to lift the sheaths (7) placed in the material placing grooves (42) to a height position corresponding to the handles of the two handle units of the yarn shear (6) placed on the pressing buckle bottom plate (11) and clamped and positioned on the positioning block (22); and the sheath pushing device comprises two groups of sheath pushing units which are arranged on the lateral sides of the positioning block (22) and can push the sheaths (7) lifted by the sheath top feeding device from the lateral sides to the middle and extrude the sheaths on the handles of the two handle units of the yarn shear (6).

2. A machine for automatically installing a protective cover on a hair clipper according to claim 1, characterized in that: The yarn shear limiting device further comprises two limiting blocks (21) which are respectively fixedly installed on the pressing buckle bottom plate (11) and are distributed on the lateral sides of the positioning block (22); and the limiting blocks (21) and the positioning block (22) can be inserted into the two handle units of the yarn shear (6) to limit the inner and outer positions of the two handle units of the yarn shear (6).

3. A machine for automatically installing a protective cover on a hair clipper according to claim 2, characterized in that: The positioning block (22) and the limiting block (21) are detachably installed on the pressing buckle bottom plate (11).

4. A machine for automatically installing a protective cover on a hair clipper according to claim 1, characterized in that: The yarn shear limiting device further comprises a material pressing device which is fixedly installed on the rack (1) and is located above the limiting block (21); the material pressing device comprises a blade tip pressing plate (23) and a material pressing pushing device which is used for driving the blade tip pressing plate (23) to move up and down; the bottom of the blade tip pressing plate (23) is stepped in the lateral direction; the blade located at the low position of the two handle units of the yarn shear (6) placed on the pressing buckle bottom plate (11) is placed directly below the low position of the blade tip pressing plate (23); the blade located at the high position of the two handle units of the yarn shear (6) is placed directly below the high position of the blade tip pressing plate (23); and when the material pressing pushing device drives the blade tip pressing plate (23) to move downward, the blades of the two handle units of the yarn shear (6) can be further staggered in the high-low direction.

5. A machine for automatically installing a protective cover on a hair clipper according to claim 4, characterized in that: The material pressing pushing device is a material pressing cylinder (24) which is fixedly installed on the rack (1); the piston rod of the material pressing cylinder (24) can vertically move up and down; and the blade tip pressing plate (23) is fixedly installed on the lower end of the piston rod.

6. A machine for automatically installing a protective cover on a hair clipper according to claim 1, characterized in that: The yarn clip sheath automatic mounting machine further comprises a sheath feeding device, the sheath feeding device comprises two sheath feeding conveying tracks (52) for successively feeding sheaths (7) to corresponding feeding recesses (42) and a feeder (51) for driving the sheaths in the sheath feeding conveying tracks (52) to move towards the corresponding feeding recesses (42) and is fixedly installed on the frame (1) below the two sheath feeding conveying tracks (52), and two feeding grooves are formed on the pressing buckle bottom plate (11) and respectively communicate with the corresponding sheath feeding conveying tracks (52) and feeding recesses (42).

7. A machine for automatically installing a protective cover on a hair clipper according to claim 6, characterized in that: The feeder (51) is a linear vibration feeder.

8. A machine for automatically installing a protective cover on a hair clipper according to claim 1, characterized in that: The bottom of the feeding recess (42) is provided with a feeding hole (45) penetrating downwards to the bottom surface of the pressing buckle bottom plate (11), the sheath feeding device comprises a feeding block and a feeding cylinder (41) for driving the feeding block to move up and down, the feeding cylinder (41) is fixedly installed on the frame (1) below the pressing buckle bottom plate (11), the feeding block comprises two feeding protrusions (44) respectively corresponding to the feeding hole (45) and being movable up and down and a bottom connecting block (43) fixedly connected between the bottoms of the two feeding protrusions (44), located below the pressing buckle bottom plate (11) and fixedly installed on the top end of the piston rod of the feeding cylinder (41).

9. A machine for automatic mounting of a scissor cover according to any of claims 1-8, characterized in that: Each sheath pushing unit comprises a pushing block (32) and a pushing cylinder (31), the two pushing cylinders (31) are respectively located on the lateral outer sides of the corresponding feeding recesses (42) and are fixedly installed on the pressing buckle bottom plate (11), and the pushing block (32) is installed on the end of the piston rod of the corresponding pushing cylinder (31) and is movable in the lateral direction under the driving of the piston rod.

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