TWI704983B - Screw nozzle and screw suction device using the same - Google Patents

Abstract

The present invention provides a screw nozzle and a screw suction device, the screw nozzle including a fixing portion disposed at a first end of the screw nozzle, a stepped inner diameter portion disposed at a second end of the screw nozzle and a through hollow portion between the first end and the second end. The inner diameter of the stepped inner diameter portion is sequentially reduced from the second end to the first end to respectively match the screw heads of different diameters; wherein the screw driving rod extends from the first end into the through hollow portion to push the screw head adsorbed to the stepped inner diameter portion.

Description

Screw suction nozzle and screw suction device using the same

The invention relates to the field of machinery, in particular to a screw sucking and locking device which can be applied to the assembly of products and related accessories.

At present, screws are widely used, and screws are almost necessary accessories in various product structures. Even the same product structure will use multiple types of screws.

In the prior art, different screw nozzles are required for screws of different sizes and models. If the screw nozzles need to be replaced when changing screws of different sizes and models, the process is troublesome and the efficiency is low; and each screw nozzle is equipped with a suction lock Although the device can improve the efficiency, the manufacturing cost is relatively high; in addition, in the case of automated production, because there are more suction and locking devices, it is necessary to design a complex program to control. Therefore, it is necessary to design a new type of screw suction nozzle and screw suction device to overcome the above-mentioned defects.

The object of the present invention is to provide a screw suction nozzle and a screw suction device, which can suck screws of multiple sizes.

To achieve the above objective, the present invention provides a screw nozzle, which includes: The fixing part is arranged at the first end of the screw nozzle; The stepped inner diameter portion is arranged at the second end of the screw nozzle; from the second end to the first end, the inner hollow diameter of the stepped inner diameter portion becomes smaller and the stepped inner diameter portion is ring-shaped Stepped distribution to match screw heads of different diameters; The penetrating hollow rod is located between the first end and the second end; wherein the screwdriver rod is used to extend into the hollow rod from the first end to attach the screw top of the stepped inner diameter portion Out of the lock attached.

Preferably, the second diameter of the cross section of the hollow part of the hollow rod part or the second diameter of the inscribed circle of the cross section is equal to the first diameter; or,

The second diameter of at least one cross-section of the hollow portion of the hollow rod or the second diameter of the inscribed circle of the at least one cross-section is greater than the first diameter, wherein the cross-section and the first diameter of the stepped inner diameter portion Step transition or gradual transition between regions.

Preferably, in the stepped inner diameter portion, the thickness of the first diameter area along the extending direction of the hollow rod portion is greater than the total thickness of other stepped portions.

In order to achieve the above objective, the present invention also provides a screw suction device, which includes a screw suction nozzle, a screwdriver rod and a base. The screw suction nozzle includes: The fixing part is arranged at the first end of the screw nozzle, and the fixing part is used to fix the screw nozzle to the base; The stepped inner diameter portion is arranged at the second end of the screw nozzle; from the second end to the first end, the inner diameter of the stepped inner diameter portion gradually becomes smaller and the stepped inner diameter portion is annular Stepped distribution to match screw heads of different diameters; The through hollow rod part is located between the first end and the second end; wherein the screwdriver rod is used to extend into the hollow rod part from the first end to absorb the screw on the stepped inner diameter Ejection lock attached.

Preferably, the innermost first diameter of the stepped inner diameter portion is larger than the diameter of the screwdriver rod, and the first diameter is smaller than the smallest diameter of the screw head applied to the screw nozzle.

Preferably, the second diameter of the cross section of the hollow part of the hollow rod portion or the second diameter of the inscribed circle of the cross section is equal to the first diameter.

Preferably, the second diameter of at least one cross-section of the hollow portion of the hollow rod portion or the second diameter of the inscribed circle of the at least one cross-section is greater than the first diameter, wherein the cross-section and the stepped inner diameter portion Step transition or gradual transition between the first diameter regions.

Preferably, it further includes a screwdriver rod driving part for driving the screwdriver rod to move and rotate along the length direction of the hollow rod part; the screwdriver rod driving part is fixed to the base.

Preferably, it further includes a vacuum interface which is fixed to the base and penetrates the cavity of the hollow rod.

Compared with the prior art, the screw suction nozzle and the screw suction device provided by the present invention can be designed to be stepped at the head end of the suction nozzle to realize that the same screw suction nozzle can absorb screws of multiple sizes and models, saving suction locks. The number of attached devices simplifies the design of the control program, reduces manufacturing costs, and improves production efficiency.

In order to have a better understanding of the above and other aspects of the present invention, the following specific examples are given in conjunction with the accompanying drawings to describe in detail as follows:

In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.

Certain words are used in the specification and the scope of the patent application to refer to specific elements. Those with ordinary knowledge in the field should understand that manufacturers may use different terms to refer to the same component. This specification and the scope of patent application do not use differences in names as a way to distinguish elements, but use differences in functions of elements as a criterion. The "including" mentioned in the entire specification and the scope of the patent application is an open term, so it should be interpreted as "including but not limited to".

Referring to Figs. 1 to 3, the structural diagram of the first embodiment of the screw sucking device of the present invention is disclosed. The screw suction device 1 includes a screw suction nozzle 10, a screwdriver rod 20 and a base 30. The screw nozzle 10 includes a fixed portion 110, a stepped inner diameter portion 120, and a through hollow rod portion 130. The screw nozzle 10 has two opposite ends: a first end 10' and a second end 10".

The fixing portion 110 is disposed at the first end 10' of the screw nozzle 10, and the fixing portion 110 is used to fix the screw nozzle 10 to the base 30. In an embodiment, the outer side of the fixing portion 110 has threads.

The stepped inner diameter portion 120 is provided at the second end 10" of the screw nozzle 10. From the second end 10" to the first end 10', the inner diameter of the stepped inner diameter portion 120 gradually becomes smaller and has a stepped shape. Distribution to match screw heads of different diameters. When the screw suction device 1 is equipped with a vacuum suction module, the screw head of a specific diameter abuts and is limited to a specific inner diameter portion of the stepped inner diameter portion 120.

The through hollow rod portion 130 is located between the first end 10' and the second end 10". The screwdriver rod 20 can extend into the hollow rod portion 130 from the first end 10' to be adsorbed on the stepped inner diameter portion The screws are pushed out and locked.

In one embodiment, the screws that need to be locked at the same time include head diameters of 5.6mm, 6.2mm, and 7.1mm. The inner diameter of the stepped inner diameter portion 120 can be provided with four steps, of which the diameters of the three outer steps are D4, D3 and D2 correspond to the diameters of the screw heads mentioned above, for example, D4=7.15mm, D3=6.25mm, D2=5.65mm, the innermost first diameter D1 needs to be smaller than D2 and larger than the diameter of the screwdriver rod 20, for example The diameter of the screwdriver rod 20 is 4mm, and the first diameter D1 may be D1=4.2mm. It is also possible to set the diameters of three steps to correspond to screw heads of two diameters, or to set the diameters of five steps to correspond to screw heads of four diameters, and the present invention is not limited to this.

The height of each step can be equivalent to the thickness of the screw head. In a preferred embodiment, the height of each step may be half the thickness of the corresponding screw head. In the foregoing embodiment of the screw including the head diameter of 5.6 mm, 6.2 mm, and 7.1 mm, the height of each step of the stepped inner diameter portion 120 may be set to 1 mm. The inner diameter D4 on the side closest to the second end 10" and the second end 10" can also be chamfered, so as to guide the screw head into the stepped inner diameter portion 120 through the second end 10", and it is not easy to cause The bad appearance or damage of the screw head, and the damage of the screw nozzle. Chamfering can also be performed between adjacent steps, such as between D4 and D3 steps, and between D3 and D2 steps; preferably, the chamfered The size can be smaller than that of the outermost chamfer (ie D4 and 10").

The cross-section of the hollow part of the hollow rod portion 130 may be circular or other shapes. In other shapes, the second diameter D1' of the inscribed circle diameter of the shape may be used as a characteristic parameter of the cross-sectional size. The second diameter D1' of the penetrating hollow rod portion 130 may be equal to the first diameter D1, or in other words, the first diameter D1 of the innermost hollow portion of the stepped inner diameter portion 120 at the second end 10" extends to the hollow rod The portion 130 even extends to the first end 10'. In another embodiment, the second diameter D1' of the penetrating hollow rod portion 130 may be greater than the first diameter D1; the first diameter D1 area to the second diameter D1' There can be a gradual transition between the areas, so that when the screw nozzle is installed, the guide screw nozzle is installed along the direction of the screwdriver rod, and it is not easy to bump; the gradual transition can be a tapered gradation, or a hollow transition area The bus bar is a straight line; the bus bar of a gradual transition can also be a curve, for example, the two ends are respectively tangent to D1 and D1'. There can also be a step transition from the first diameter D1 area to the second diameter D1' area. The first diameter D1 and When the second diameter D1' is not equal, along the extension direction of the hollow rod portion 130, in the stepped inner diameter portion 120, the length of the area of the first diameter D1 is much larger than the total length of the other step (D2, D3, D4) areas, which is The entire stepped inner diameter portion 120 provides better support strength.

In an embodiment, the screw sucking device 1 further includes a screwdriver rod driving part, which is fixed to the base 30. The screwdriver rod driving part fixes the screwdriver rod 20, and drives the screwdriver rod 20 to move and rotate along the length of the hollow rod 130, so that the screw sucked by the screw nozzle 10 can be abutted and locked to the mechanism. The screwdriver rod 20 can also unlock the screw attached to the mechanism and attach it to the screw suction nozzle 10. At this time, preferably, the top of the screwdriver rod 20 is magnetic.

The screw sucking device 1 includes a vacuum interface 12 that is fixed to the base 30 and penetrates the cavity of the hollow rod 130 to realize the vacuum sucking of screws.

In summary, the screw suction nozzle and screw suction device proposed by the present invention can be used for screws of various sizes at the same time by using a stepped inner diameter portion with multiple steps. In addition, in order to prevent the screwdriver rod from touching the inner wall of the screw nozzle when the screwdriver rod is installed, disassembled, or stretched, the size of the hollow part of the hollow rod 130 is larger than the first diameter D1 area, and the screw can be guided when the screw nozzle is installed The suction nozzle is installed along the direction of the screwdriver rod, and it is not easy to bump.

In summary, although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Those who have ordinary knowledge in the technical field to which the present invention belongs can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to those defined by the attached patent application scope.

1: Screw suction device 10: Screw nozzle 10’: First end 10": second end 12: Vacuum interface 20: Screwdriver lever 30: Pedestal 110: Fixed part 120: Stepped inner diameter 130: hollow pole D1: first diameter D1’: Second diameter D2, D3, D4: diameter

Figure 1 is a schematic diagram of the structure of the screw nozzle of the first embodiment of the present invention. Figure 2 is a schematic cross-sectional structure diagram of the screw nozzle of the first embodiment of the present invention. Figure 3 is a schematic cross-sectional structure diagram of the screw suction device according to the first embodiment of the present invention.

10: Screw nozzle

10’: First end

10": second end

110: Fixed part

120: Stepped inner diameter

130: hollow pole

Claims (10)

A screw nozzle, including: The fixing part is arranged at the first end of the screw nozzle; The stepped inner diameter portion is arranged at the second end of the screw nozzle; from the second end to the first end, the inner hollow diameter of the stepped inner diameter portion becomes smaller and the stepped inner diameter portion is ring-shaped Stepped distribution to match screw heads of different diameters; The penetrating hollow rod is located between the first end and the second end; wherein the screwdriver rod is used to extend into the hollow rod from the first end to attach the screw top of the stepped inner diameter portion Out of the lock attached. The screw nozzle described in item 1 of the scope of patent application, wherein the innermost first diameter of the stepped inner diameter portion is larger than the diameter of the screwdriver rod, and the first diameter is smaller than the screw head applied to the screw nozzle The smallest diameter. The screw nozzle according to the second item of the scope of patent application, wherein the second diameter of the cross section of the hollow part of the hollow rod or the second diameter of the inscribed circle of the cross section is equal to the first diameter; or, The second diameter of at least one cross-section of the hollow portion of the hollow rod or the second diameter of the inscribed circle of the at least one cross-section is greater than the first diameter, wherein the cross-section and the first diameter of the stepped inner diameter portion Step transition or gradual transition between regions. The screw nozzle described in item 2 of the scope of patent application, wherein In the stepped inner diameter portion, the thickness of the first diameter area along the extending direction of the hollow rod portion is greater than the total thickness of the other stepped portions. A screw suction device includes a screw suction nozzle, a screwdriver rod and a base, The screw nozzle includes: The fixing part is arranged at the first end of the screw nozzle, and the fixing part is used to fix the screw nozzle to the base; The stepped inner diameter portion is arranged at the second end of the screw nozzle; from the second end to the first end, the inner diameter of the stepped inner diameter portion gradually becomes smaller and the stepped inner diameter portion is annular Stepped distribution to match screw heads of different diameters; The through hollow rod part is located between the first end and the second end; wherein the screwdriver rod is used to extend into the hollow rod part from the first end to absorb the screw on the stepped inner diameter part Ejection lock attached. As for the screw suction device described in item 5 of the scope of patent application, wherein the innermost first diameter of the stepped inner diameter portion is larger than the diameter of the screwdriver rod, and the first diameter is smaller than the screw head applied to the screw nozzle The smallest diameter. According to the screw suction device described in item 6 of the scope of patent application, the second diameter of the cross section of the hollow part of the hollow rod or the second diameter of the inscribed circle of the cross section is equal to the first diameter. The screw suction device described in item 6 of the scope of patent application, wherein the second diameter of at least one cross-section of the hollow part of the hollow rod part or the second diameter of the inscribed circle of the at least one cross-section is greater than the first diameter, wherein , A step transition or a gradual transition between the cross section and the first diameter region of the stepped inner diameter portion. The screw sucking device described in item 5 of the scope of patent application further includes a screwdriver rod driving part for driving the screwdriver rod to move and rotate along the length of the hollow rod; the screwdriver rod driving part is fixed to the Pedestal. The screw suction device described in item 5 of the scope of patent application further includes a vacuum interface, which is fixed to the base and penetrates the cavity of the hollow rod.

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