Screw clamping and positioning device

Abstract

The utility model discloses a screw clamping and positioning device, relates to the technical field of screws, and comprises an upper side mounting sleeve frame and a screw positioning sleeve, the upper side mounting sleeve frame is mounted and connected to the upper end position of the screw positioning sleeve, and an elastic pulling limiting plate is arranged on the peripheral side of the lower end of the upper side mounting sleeve frame. A replaceable limiting ball is arranged on the portion, located on the screw positioning sleeve, of the inner side of the lower end of the elastic pulling limiting plate, the elastic pulling limiting plate and the replaceable limiting ball are fixedly connected through a fastener, and a screw body is arranged on the inner side of the upper side installation sleeve frame. When the replaceable limiting ball is damaged, a worker loosens the fastener on the elastic pulling limiting plate, the abraded replaceable limiting ball can be replaced, the whole replaceable limiting ball does not need to be replaced, and therefore unnecessary waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of screws, in particular to a screw clamping and positioning device. Background Art

[0002] A screw is a tool that uses the physical and mathematical principles of the circular rotation of an object's inclined surface and friction to gradually fasten objects and machine parts. Screw is a general term for fasteners and a daily colloquialism. When installing screws, a screw clamping and positioning device is required to facilitate installation and use.

[0003] The existing Chinese patent CN205852223U disclosed the field of automation equipment technology on January 4, 2017, and particularly relates to a screw clamping and positioning device and an automatic screw driving device. The screw clamping and positioning device is used to clamp the screw. The screw includes a threaded rod and a pan head arranged at one end of the threaded rod. The screw clamping and positioning device includes a screw guide seat, a limiting ball and an elastic claw; the interior of the screw guide seat is provided with a screw driving hole that passes through the head end and the tail end of the screw guide seat in the length direction, and the side of the screw guide seat is provided with a screw feeding hole that is connected to the screw driving hole and opens upward; the screw guide seat is located on the outer side of the tail end of the screw guide seat and is close to at least two accommodating holes that are connected to the screw driving holes and are arranged at equal intervals. The limiting ball is installed in each accommodating hole, and the elastic claw is arranged outside the accommodating hole and abuts against the limiting ball to limit the limiting ball from falling out.

[0004] However, when the above-mentioned device is in use, the elastic claw and the limiting ball are connected as one body, and the limiting ball and the screw are prone to wear when they are in rotational contact. When the limiting ball is excessively worn, the screw is easily obstructed due to the wear and tear of the limiting ball, and the whole device cannot be effectively disassembled and replaced. When replacing, the whole device needs to be replaced, which will cause unnecessary waste of resources. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a screw clamping and positioning device is proposed. When a replaceable limit ball is damaged, a person can loosen the fastener on the elastic pull limit plate to replace the worn replaceable limit ball without the need for overall replacement, thereby reducing unnecessary waste.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A screw clamping and positioning device, comprising an upper mounting sleeve and a screw positioning sleeve, wherein the upper mounting sleeve is mounted and connected to the upper end position of the screw positioning sleeve, an elastic pulling and limiting plate is arranged on the circumference of the lower end of the upper mounting sleeve, a replaceable limiting ball is arranged on the inner side of the lower end of the elastic pulling and limiting plate located on the screw positioning sleeve, the elastic pulling and limiting plate and the replaceable limiting ball are fixedly connected by fasteners, and a screw body is arranged on the inner side of the upper mounting sleeve;

[0008] The replaceable limiting ball comprises a metal screw hole sleeve and a wear-resistant limiting ball. The outer end through hole of the wear-resistant limiting ball is provided with a metal screw hole sleeve, and the metal screw hole sleeve is connected to the elastic pulling limiting plate through a fastener.

[0009] Through the above technical scheme: the upper mounting sleeve can be installed at the specified position by screws, the screw body can be placed in the screw positioning sleeve through the upper mounting sleeve, the head of the screw body is blocked by four replaceable limiting balls, and the teeth of the screw body pass through the gaps of the four replaceable limiting balls, so that under the action of gravity, the whole can be placed vertically, thereby achieving the clamping and positioning effect, when the screw body is rotated by the upper and lower pressure, the screw body squeezes the four replaceable limiting balls to move outward, and the four replaceable limiting balls drive the elastic pulling limiting plate to move outward, so that the screw body is fixed to the outside through the screw positioning sleeve, and when the replaceable limiting ball is damaged, the personnel loosen the fasteners on the elastic pulling limiting plate, and the worn replaceable limiting ball can be replaced without replacing the entire body, thereby reducing unnecessary waste.

[0010] The utility model is further configured such that the upper side mounting sleeve frame includes a mounting ring, an outer ear plate and an inner sleeve cavity, outer ear plates are arranged on the outer sides of both ends of the mounting ring, an inner sleeve cavity is arranged inside the mounting ring, and the mounting ring is connected to the screw positioning sleeve.

[0011] Through the above technical solution: because the sleeve frame structure is installed on the upper side, it can be installed and used accordingly.

[0012] The utility model is further configured as follows: the elastic pulling limit plate includes an assembly screw hole, a bottom limit plate, a pulling spring and an upper end block; the lower end of the upper end block is provided with a bottom limit plate, the inner end of the bottom limit plate is provided with a pulling spring, the inner side of the lower end of the bottom limit plate is provided with an assembly screw hole, and the upper end block is connected to the upper mounting frame.

[0013] Through the above technical solution: due to the elastic pulling limit plate structure, it is convenient to use the blocking limit, and can be effectively elastically pulled and restored.

[0014] The utility model is further configured such that the screw positioning sleeve includes a limiting ball hole, a bottom cone sleeve and an upper sleeve, a limiting ball hole is arranged on the circumference of the lower end of the upper sleeve, a bottom cone sleeve is arranged on the lower end of the upper sleeve, and the upper sleeve is connected to the upper mounting sleeve frame.

[0015] Through the above technical solution: due to the screw positioning sleeve structure, it can be used in a limited position.

[0016] The utility model is further configured that the upper sleeve is welded and connected to the upper mounting sleeve frame, and the upper sleeve and the upper mounting sleeve frame are connected inside.

[0017] Through the above technical solution: because the upper sleeve is welded to the upper mounting sleeve frame, and the upper sleeve and the upper mounting sleeve frame are connected inside, it is easy to install and fix, and the internal connection makes it possible for the screw body to be placed without obstruction.

[0018] The utility model is further configured that a total of four elastic pulling limit plates are provided, and the elastic pulling limit plates are symmetrically arranged on the peripheral sides of the screw positioning sleeve.

[0019] Through the above technical solution: since there are four elastic pulling limit plates in total, and the elastic pulling limit plates are symmetrically arranged on the peripheral side of the screw positioning sleeve, the peripheral side can be used for limiting and blocking.

[0020] The utility model is further configured that the replaceable limiting ball is sleeved in the inner side of the screw positioning sleeve.

[0021] Through the above technical solution: because the replaceable limiting ball is sleeved in the inner side of the screw positioning sleeve, it can be sleeved in a limiting manner for blocking use.

[0022] The utility model is further configured that the elastic pulling limit plate is made of beryllium bronze.

[0023] Through the above technical solution: because the elastic pulling limit plate is made of beryllium bronze, it has good elasticity and is not easy to be deformed and damaged.

[0024] The beneficial effects of the utility model are:

[0025] 1. A replaceable limiting ball structure is provided to facilitate replacement and use. The metal screw hole sleeve of the replaceable limiting ball is fixedly connected to the elastic pulling limiting plate by a fastener. When a person loosens the fastener, the metal screw hole sleeve can be separated from the elastic pulling limiting plate and can be disassembled and replaced. When the metal screw hole sleeve is separated, it can drive the corresponding wear-resistant limiting ball for replacement, and there is no need to replace the entire ball, thereby reducing unnecessary waste.

[0026] 2. By setting up an elastic pulling limit plate structure, it can limit blocking and pull restoration. The upper end block of the elastic pulling limit plate is welded and connected to the upper mounting frame, so that the upper end block is easy to install and place. The upper end block can drive the bottom limit plate to be placed. The bottom limit plate is connected to the screw positioning sleeve due to the pulling spring. The pulling spring has a good elastic pulling force. In this way, the bottom limit plate can be effectively pulled when it expands outward, so that the bottom limit plate is restored in the pulling of the pulling spring and restored to its original state. The bottom limit plate has an assembly screw hole at the lower end, so that the replaceable limit ball can be installed and disassembled accordingly through the fasteners. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a three-dimensional structural schematic diagram of a screw clamping and positioning device proposed by the utility model;

[0028] Figure 2 This is a schematic diagram of the upper side mounting frame structure of a screw clamping and positioning device proposed by the utility model;

[0029] Figure 3 A schematic diagram of a replaceable limiting ball structure of a screw clamping and positioning device proposed by the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of an elastic pulling limit plate of a screw clamping and positioning device proposed by the utility model;

[0031] Figure 5 The utility model provides a schematic diagram of the screw positioning sleeve structure of a screw clamping and positioning device.

[0032] In the figure: 1. Upper side mounting frame; 11. Mounting ring; 12. Outer ear plate; 13. Internal sleeve cavity; 2. Screw body; 3. Screw positioning sleeve; 31. Limiting ball hole; 32. Bottom cone sleeve; 33. Upper side sleeve; 4. Fastener; 5. Replaceable limiting ball; 51. Metal screw hole sleeve; 52. Wear-resistant limiting ball; 6. Elastic pulling limiting plate; 61. Assembly screw hole; 62. Bottom limiting plate; 63. Pull spring; 64. Upper side end block. DETAILED DESCRIPTION

[0033] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0036] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0037] Reference Figure 1-Figure 5 A screw clamping and positioning device comprises an upper mounting sleeve 1 and a screw positioning sleeve 3, wherein the upper mounting sleeve 1 is mounted and connected to the upper end of the screw positioning sleeve 3, an elastic pulling and limiting plate 6 is arranged on the lower end periphery of the upper mounting sleeve 1, a replaceable limiting ball 5 is arranged on the inner side of the lower end of the elastic pulling and limiting plate 6 located on the screw positioning sleeve 3, the elastic pulling and limiting plate 6 and the replaceable limiting ball 5 are fixedly connected by a fastener 4, and a screw body 2 is arranged on the inner side of the upper mounting sleeve 1;

[0038] The replaceable limiting ball 5 includes a metal screw hole sleeve 51 and a wear-resistant limiting ball 52. The metal screw hole sleeve 51 is arranged at the through hole at the outer end of the wear-resistant limiting ball 52. The metal screw hole sleeve 51 is connected to the elastic pulling limiting plate 6 through the fastener 4. The metal screw hole sleeve 51 of the replaceable limiting ball 5 is fixedly connected to the elastic pulling limiting plate 6 through the fastener 4. When a person loosens the fastener 4, the metal screw hole sleeve 51 can be separated from the elastic pulling limiting plate 6 and can be disassembled and replaced. When the metal screw hole sleeve 51 is separated, it can drive the corresponding wear-resistant limiting ball 52 to be replaced, and there is no need to replace the entirety, thereby reducing unnecessary waste.

[0039] Specifically, the upper mounting frame 1 includes a mounting ring 11, an outer ear plate 12 and an internal sleeve cavity 13. The outer ear plates 12 are arranged on the outer sides of both ends of the mounting ring 11, and the inner sleeve cavity 13 is arranged inside the mounting ring 11. The mounting ring 11 is connected to the screw positioning sleeve 3. The mounting ring 11 of the upper mounting frame 1 is welded and connected to the screw positioning sleeve 3, so that the mounting ring 11 is easy to install and fix. The mounting ring 11 can be fixed at a specified position through external screws due to the through holes of the outer ear plates 12 at both ends.

[0040] Specifically, the elastic pulling limit plate 6 includes an assembly screw hole 61, a bottom limit plate 62, a pulling spring 63 and an upper end block 64. The lower end of the upper end block 64 is provided with a bottom limit plate 62, the inner end of the bottom limit plate 62 is provided with a pulling spring 63, the inner side of the lower end of the bottom limit plate 62 is provided with an assembly screw hole 61, and the upper end block 64 is connected to the upper mounting frame 1. The upper end block 64 of the elastic pulling limit plate 6 is welded and connected to the upper mounting frame 1, so that the upper end block 64 is easy to install and place. The upper end block 64 can drive the bottom limit plate 62 to be placed. The bottom limit plate 62 is connected to the screw positioning sleeve 3 due to the pulling spring 63. The pulling spring 63 has a good elastic pulling force, so that the bottom limit plate 62 can be effectively pulled when expanding outward, so that the bottom limit plate 62 is easy to restore under the pulling of the pulling spring 63 and restore to its original state. The bottom limit plate 62 has an assembling screw hole 61 at the lower end, so that the replaceable limit ball 5 can be installed and disassembled accordingly through the fastener 4.

[0041] Specifically, the screw positioning sleeve 3 includes a limiting ball hole 31, a bottom cone sleeve 32 and an upper sleeve 33. The lower end of the upper sleeve 33 is provided with a limiting ball hole 31, and the lower end of the upper sleeve 33 is provided with a bottom cone sleeve 32. The upper sleeve 33 is connected to the upper mounting sleeve frame 1. The upper sleeve 33 of the screw positioning sleeve 3 is welded and connected to the upper mounting sleeve frame 1, so that it is easy to install and fix. Due to the area of ​​the limiting ball hole 31 of the upper sleeve 33, the replaceable limiting ball 5 can be correspondingly inserted into the blocking. The upper sleeve 33 and the bottom cone sleeve 32 have an internal through area, so that the screw body 2 is easy to pass through and be fixed for use;

[0042] The upper sleeve 33 is welded to the upper mounting sleeve frame 1 , and the upper sleeve 33 and the interior of the upper mounting sleeve frame 1 are connected, so as to facilitate installation and fixation, and the internal connection makes it possible to place the screw body 2 without any obstruction.

[0043] Specifically, there are four elastic pulling limit plates 6 in total, and the elastic pulling limit plates 6 are symmetrically arranged on the peripheral side of the screw positioning sleeve 3, so that they can be used for limiting and blocking on the peripheral side.

[0044] Specifically, the replaceable limiting ball 5 is sleeved in the inner side of the screw positioning sleeve 3, so that it can be sleeved in a limiting manner for blocking use.

[0045] Specifically, the elastic pulling limit plate 6 is made of beryllium bronze, which has good elasticity and is not easily deformed or damaged.

[0046] Working principle: When in use, the upper mounting sleeve 1 can be installed at the specified position by means of screws, and the screw body 2 can be placed in the screw positioning sleeve 3 through the upper mounting sleeve 1. The head of the screw body 2 is blocked by the four replaceable limiting balls 5, and the teeth of the screw body 2 pass through the gaps of the four replaceable limiting balls 5, so that under the action of gravity, the whole can be placed vertically, thereby achieving a clamping and positioning effect. When the screw body 2 is rotated by the upper and lower pressure, the screw body 2 squeezes the four replaceable limiting balls 5 to move outward, and the four replaceable limiting balls 5 drive the elastic pulling limiting plate 6 to move outward, so that the screw body 2 passes through the screw positioning sleeve 3 and is fixed to the outside. When the replaceable limiting ball 5 is damaged, the personnel loosens the fastener 4 on the elastic pulling limiting plate 6, and the worn replaceable limiting ball 5 can be replaced without replacing the entire thing, thereby reducing unnecessary waste.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screw clamping and positioning device, comprising an upper mounting frame (1) and a screw positioning sleeve (3), wherein the upper mounting frame (1) is mounted and connected to the upper end of the screw positioning sleeve (3), characterized in that: An elastic pulling limit plate (6) is arranged on the circumferential side of the lower end of the upper mounting sleeve (1); a replaceable limit ball (5) is arranged on the inner side of the lower end of the elastic pulling limit plate (6) and on the screw positioning sleeve (3); the elastic pulling limit plate (6) and the replaceable limit ball (5) are fixedly connected by a fastener (4); and a screw body (2) is arranged on the inner side of the upper mounting sleeve (1); The replaceable limiting ball (5) comprises a metal screw hole sleeve (51) and a wear-resistant limiting ball (52); the metal screw hole sleeve (51) is arranged at the outer end through hole of the wear-resistant limiting ball (52); and the metal screw hole sleeve (51) is connected to the elastic pulling limiting plate (6) via a fastener (4).

2. A screw clamping and positioning device according to claim 1, characterized in that: The upper mounting sleeve frame (1) comprises a mounting ring (11), an outer ear plate (12) and an inner sleeve cavity (13); outer ear plates (12) are arranged on the outer sides of both ends of the mounting ring (11); an inner sleeve cavity (13) is arranged inside the mounting ring (11); and the mounting ring (11) is connected to a screw positioning sleeve (3).

3. A screw clamping and positioning device according to claim 1, characterized in that: The elastic pulling limit plate (6) comprises an assembly screw hole (61), a bottom limit plate (62), a pulling spring (63) and an upper end block (64); the lower end of the upper end block (64) is provided with a bottom limit plate (62); the inner end of the bottom limit plate (62) is provided with a pulling spring (63); the inner side of the lower end of the bottom limit plate (62) is provided with an assembly screw hole (61); and the upper end block (64) is connected to the upper mounting frame (1).

4. A screw clamping and positioning device according to claim 1, characterized in that: The screw positioning sleeve (3) comprises a limiting ball hole (31), a bottom cone sleeve (32) and an upper sleeve (33); the limiting ball hole (31) is arranged on the circumference of the lower end of the upper sleeve (33); the lower end of the upper sleeve (33) is provided with a bottom cone sleeve (32); and the upper sleeve (33) is connected to the upper mounting sleeve frame (1).

5. A screw clamping and positioning device according to claim 4, characterized in that: The upper sleeve (33) is welded to the upper mounting sleeve frame (1), and the upper sleeve (33) and the interior of the upper mounting sleeve frame (1) are connected.

6. A screw clamping and positioning device according to claim 1, characterized in that: A total of four elastic pulling limit plates (6) are provided, and the elastic pulling limit plates (6) are symmetrically arranged on the circumferential side of the screw positioning sleeve (3).

7. A screw clamping and positioning device according to claim 1, characterized in that: The replaceable limiting ball (5) is sleeved on the inner side of the screw positioning sleeve (3).

8. The screw clamping and positioning device according to claim 1, characterized in that: The elastic pulling limit plate (6) is made of beryllium bronze.

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