Free lead screw arm for spring forming

Abstract

The utility model discloses a free lead screw arm for spring forming, which comprises a positioning seat, a rotating seat, a tool apron and a rotating device, the positioning seat is provided with a first guide rail which is transversely arranged, the first guide rail is provided with a first sliding block in a sliding mode, the rotating seat is arranged on the positioning seat, the rotating seat is provided with a rotating seat which is arranged in a rotating mode, and the tool apron is provided with a second sliding block in a sliding mode. The rotating base is provided with an eccentric cam deviating from the axis of the rotating base, the positioning base is provided with a driving base, a second guide rail is vertically arranged on the front wall of the driving base, a second sliding block is installed on the second guide rail in a sliding mode, the tool apron is provided with a tool, and the rear wall and the bottom wall of the tool apron are connected with the first sliding block and the second sliding block respectively. The rotating device is connected with the rotating base and can drive the rotating base to rotate, when the eccentric cam rotates, the tool apron can be driven to move transversely and vertically, and then the tool is driven to reciprocate transversely and vertically.

Description

Technical Field

[0001] The utility model relates to the field of spring equipment, in particular to a free screw arm used for spring forming. Background Art

[0002] In the processing of existing spring equipment, a tool is generally used to guide the strip, and then the strip is bent into a spring of a predetermined shape. However, if the existing free hand has two degrees of freedom, it generally requires two pairs of one-to-one driving devices to drive it, and the corresponding volume is also large and the length is also long. For some equipment with more complex processing requirements, the overall volume of the equipment will also increase. Utility Model Content

[0003] The main purpose of the utility model is to propose a free screw arm for spring forming, aiming to improve the existing free hand structure. The use of a single drive device to simultaneously drive the tool can achieve two short-stroke degrees of freedom, effectively reducing the size of the arm and improving the compactness and work efficiency of the equipment.

[0004] To achieve the above object, the utility model provides a free screw arm for spring forming, comprising:

[0005] A positioning seat, wherein the positioning seat is provided with a first guide rail arranged transversely, and a first slider is slidably mounted on the first guide rail;

[0006] A rotating seat, the rotating seat is arranged on the positioning seat, the rotating seat is provided with a rotating seat arranged for rotation, the rotating seat is provided with an eccentric cam deviating from its axis, the positioning seat is provided with a driving seat, a front wall of the driving seat is vertically provided with a second guide rail, and a second slider is slidably installed on the second guide rail;

[0007] A knife seat, wherein the knife seat is provided with a knife, and the rear wall and the bottom wall of the knife seat are respectively connected to the first slider and the second slider;

[0008] A rotating device, which is connected to the rotating seat and can drive the rotating seat to rotate,

[0009] When the eccentric cam rotates, it can drive the tool holder to move horizontally and vertically, and then drive the tool to make horizontal and vertical reciprocating movements.

[0010] In the actual design, a single eccentric cam is in direct contact with the driving seat, thereby driving the driving seat to drive the second guide rail to move, thereby realizing the passive movement of the second slider in the vertical direction, and at the same time driving the tool holder to move in the lateral direction of the first guide rail, thereby realizing the lateral and vertical movement of the tool;

[0011] That is, the rotational stroke is converted into strokes in the lateral and vertical directions, which effectively makes the free arm smaller in size, more compact in structure, and more stable, and can be applied to more complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0013] Figure 2 It is a half-section schematic diagram of the utility model;

[0014] Figure 3 is a schematic diagram of a rotating device;

[0015] Figure 4 This is a schematic diagram of the utility model with some structures hidden.

[0016] In the figure,

[0017] 1 is a positioning seat, 11 is a first guide rail, 12 is a first slide block, 13 is a second guide rail, 14 is a second slide block,

[0018] 2 is a rotating seat, 21 is a rotating seat, 22 is an eccentric cam,

[0019] 3 is the driving seat, 31 is the driving hole, 3 is the bearing,

[0020] 4 is a knife seat, 40 is a knife, 41 is a first knife groove, 42 is a second knife groove,

[0021] 5 is a rotating device,

[0022] 6 is a longitudinal movable frame, 60 is a longitudinal screw rod pair, 61 is a longitudinal guide rail, and 62 is a longitudinal slide block. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0026] like Figures 1 to 4 As shown, a free screw arm for spring forming includes:

[0027] A positioning seat 1, wherein the positioning seat 1 is provided with a first guide rail 11 arranged transversely, and a first slider 12 is slidably mounted on the first guide rail 11;

[0028] A rotating seat 2, the rotating seat 2 is arranged on the positioning seat 1, the rotating seat 2 is provided with a rotating seat 21 which is rotatably arranged, the rotating seat 21 is provided with an eccentric cam 22 which deviates from its axis, the positioning seat 1 is provided with a driving seat 3, the front wall of the driving seat 3 is vertically provided with a second guide rail 13, and the second guide rail 13 is slidably installed with a second slider 14;

[0029] A knife seat 4, wherein the knife seat 4 is provided with a knife 40, and the rear wall and the bottom wall of the knife seat 4 are respectively connected to the first slider 12 and the second slider 14;

[0030] The rotating device 5 is connected to the rotating seat 21 and can drive the rotating seat 21 to rotate.

[0031] When the eccentric cam 22 rotates, it can drive the knife holder 4 to move horizontally and vertically, and further drive the knife 40 to move horizontally and vertically back and forth.

[0032] In the actual design, the single eccentric cam 22 is in direct contact with the driving seat 3, thereby driving the driving seat 3 to drive the second guide rail 13 to move, thereby realizing the passive vertical movement of the second slider 14, and at the same time driving the tool holder 4 to move in the lateral direction of the first guide rail 11, thereby realizing the lateral and vertical movement of the tool 40;

[0033] That is, the rotational stroke is converted into strokes in the lateral and vertical directions, which effectively makes the free arm smaller in size, more compact in structure, and more stable, and can be applied to more complex working conditions.

[0034] Specifically, the driving seat 3 is provided with a recessed driving hole 31 , and the eccentric cam 22 extends into the driving hole 31 , thereby reducing the cam obstruction force caused by the spacing, and then converting it into a vertical stroke.

[0035] In the embodiment of the utility model, the rotating device 5 is a rotating motor and a gear box connected to the rotating motor, wherein the gear box can increase the torque and make the rotation smoother.

[0036] Specifically, a bearing 3 is provided between the driving hole 31 and the driving seat 3 , thereby ensuring the smooth movement of the tool 40 .

[0037] In the embodiment of the present utility model, the driving seat 3 is circular in shape.

[0038] Specifically, a first tool groove 41 is recessed in the middle of the tool 40 , and second tool grooves 42 are disposed on both sides of the first tool groove. The relative position of the tool 40 , such as height, can be adjusted according to actual needs.

[0039] In the embodiment of the utility model, it also includes a longitudinal movable frame 6, the positioning seat 1 is arranged on the longitudinal movable frame 6, the longitudinal movable frame 6 includes a base, a longitudinal guide rail 61 fixed to the base, a longitudinal slider 62 slidably installed on the longitudinal guide rail, and a longitudinal screw pair 63 for driving the longitudinal slider. The positioning seat 1 is arranged on the longitudinal slider, thereby realizing a larger displacement of the tool 40 in the longitudinal stroke.

[0040] Specifically, the longitudinal screw pair includes a rotary servo motor, a ball screw connected to the rotary servo motor, and a screw nut arranged on the positioning seat 1. The screw nut and the ball screw cooperate with each other to realize the overall movement of the free hand.

[0041] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A free screw arm for spring forming, characterized in that: include: A positioning seat, wherein the positioning seat is provided with a first guide rail arranged transversely, and a first slider is slidably mounted on the first guide rail; A rotating seat, the rotating seat is arranged on the positioning seat, the rotating seat is provided with a rotating seat arranged for rotation, the rotating seat is provided with an eccentric cam deviating from its axis, the positioning seat is provided with a driving seat, a front wall of the driving seat is vertically provided with a second guide rail, and a second slider is slidably installed on the second guide rail; A knife seat, wherein the knife seat is provided with a knife, and the rear wall and the bottom wall of the knife seat are respectively connected to the first slider and the second slider; A rotating device, which is connected to the rotating seat and can drive the rotating seat to rotate, When the eccentric cam rotates, it can drive the knife holder to move horizontally and vertically.

2. The free screw arm for spring forming according to claim 1, characterized in that: The driving seat is provided with a recessed driving hole, and the eccentric cam extends into the driving hole.

3. The free screw arm for spring forming according to claim 1, characterized in that: The rotating device is a rotating motor and a gear box connected to the rotating motor.

4. The free screw arm for spring forming according to claim 2, characterized in that: A bearing is arranged between the driving hole and the driving seat.

5. The free screw arm for spring forming according to claim 1, characterized in that: The driving seat is circular in shape.

6. The free screw arm for spring forming according to claim 1, characterized in that: A first knife groove is recessed in the middle of the knife, and second knife grooves are disposed on both sides of the first knife groove.

7. The free screw arm for spring forming according to claim 1, characterized in that: It also includes a longitudinal movable frame, the positioning seat is arranged on the longitudinal movable frame, the longitudinal movable frame includes a base, a longitudinal guide rail fixed to the base, a longitudinal slider slidably installed on the longitudinal guide rail, and a longitudinal screw pair for driving the longitudinal slider, and the positioning seat is arranged on the longitudinal slider.

8. The free screw arm for spring forming according to claim 7, characterized in that: The longitudinal screw pair comprises a rotary servo motor, a ball screw connected to the rotary servo motor, and a screw nut arranged on a positioning seat, wherein the screw nut and the ball screw are matched.

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