CN113752001B - Automatic torsion spring loading mechanism - Google Patents
Automatic torsion spring loading mechanism Download PDFInfo
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- CN113752001B CN113752001B CN202111246594.0A CN202111246594A CN113752001B CN 113752001 B CN113752001 B CN 113752001B CN 202111246594 A CN202111246594 A CN 202111246594A CN 113752001 B CN113752001 B CN 113752001B
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- 238000009434 installation Methods 0.000 abstract description 7
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- 230000004888 barrier function Effects 0.000 description 4
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
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Abstract
The application relates to an automatic torsion spring loading mechanism, which comprises: a body; a pendulum seat rotatably connected to the body about a first axis; the first driving device is used for driving the swinging seat to rotate around the first axis; a continuously extending guide curved surface provided on the body, the length of the guide curved surface having an extension component surrounding the first axis and an extension component parallel to the first axis; a slider arm movably connected to the swing seat in a first direction, the slider arm being provided with an abutment and a catch assembly for catching and releasing an end of a torsion spring, wherein the first direction is parallel to the first axis; and a spring connected to the slider so as to apply an elastic force to the slider in the first direction and to move the abutting portion into abutment with the guide curved surface. The application facilitates a more complete installation of the initially installed torsion spring on the product.
Description
Technical Field
The present application relates to an automatic loading torsion spring mechanism for more fully mounting a primary loaded torsion spring on a product on the product.
Background
The torsion spring is a short name of torsion spring, belongs to one kind of coil spring, and is widely applied to various products. The ends of the torsion springs are secured to other components which pull them back to their original position as they rotate about the spring center, creating a torque or rotational force.
The torsion spring has two ends which need to be secured to the product to function. In the manufacturing process of products containing torsion springs, manufacturers typically position or fix a first end of the torsion spring on the product and then manually pull a second end to the corresponding position of the product with a tool such as a clamp to resiliently abut the second end against the product. The manual torsion spring mounting mode is time-consuming and labor-consuming, low in efficiency and has a certain danger. If the torsion spring is mounted by means of a machine, the difficulty is in the mounting of the second end. This is because:
In the step of initially fitting the product to the product with its first end in the desired position, the torsion spring is generally not torsionally deformed to give rise to the spring force, so that the machine (or person) does not need to overcome the spring force during the implementation of this step and can easily be implemented by conventional means (even manually). But when the second end of the torsion spring is installed, the torsion spring is torsionally deformed during installation to generate elastic force. More annoying are: since there is normally a barrier in the circumferential direction of the torsion spring between the abutment surface on the product corresponding to the second end of the torsion spring and the second end of the torsion spring, or there is no such barrier but there is an axial positional deviation between the two, it is not possible to fit it in place if the second end of the torsion spring is pulled only in the helical direction of the torsion spring.
The present application is derived therefrom.
Disclosure of Invention
The application solves the technical problems that: an automatic loading torsion spring mechanism is provided which facilitates a more complete installation of a pre-loaded torsion spring on a product.
The technical scheme of the application is as follows:
an automatic torsion spring loading mechanism comprising:
A body;
A pendulum seat rotatably connected to the body about a first axis;
The first driving device is used for driving the swing seat to rotate around the first axis;
A continuously extending guide curved surface provided on the body, the guide curved surface having a length with an extension component surrounding the first axis and an extension component parallel to the first axis; and
A slider arm movably connected to the swing seat in a first direction, the slider arm being provided with an abutment and a catch assembly for catching and releasing an end of a torsion spring, wherein the first direction is parallel to the first axis;
and the spring is connected with the sliding arm so as to apply elastic force to the sliding arm in the first direction and enable the abutting part to movably abut against the guide curved surface.
In an alternative design, the guiding curved surface is located at a side of the abutting portion facing away from the grabbing and placing assembly in the first direction, and the guiding curved surface is arranged towards the grabbing and placing assembly in the first direction; or alternatively
The guide curved surface is positioned on one side of the abutting part facing the grabbing and placing assembly in the first direction, and the guide curved surface is arranged opposite to the grabbing and placing assembly in the first direction.
In an alternative embodiment, the spring is a compression spring or tension spring connected between the slide arm and the pendulum base.
In an alternative design, the swing seat comprises a guide moving hole penetrating along the first direction, and the sliding arm is movably opposite to the guide moving hole; or alternatively
The swing seat comprises a guide moving groove which is arranged in a penetrating mode along the first direction, and the sliding arm is movably embedded in the guide moving groove.
In an alternative design, the width of any position of the guiding curved surface is perpendicular to the first axis.
In an alternative design, the guide curved surface comprises a first surface section, a second surface section, a third surface section, a fourth surface section and a fifth surface section which are sequentially and directly connected, wherein the length of the second surface section and the length of the fourth surface section only extend in the circumferential direction surrounding the first axis, the length of the first surface section, the length of the third surface section and the length of the fifth surface section all have extension components parallel to the first axis, the second surface section and the fourth surface section are arranged in a staggered manner in the circumferential direction surrounding the first axis, and the first surface section, the third surface section and the fifth surface section at least partially overlap in the circumferential direction surrounding the first axis.
In an alternative embodiment, the guide curved surface comprises a sixth surface section, a seventh surface section and an eighth surface section which are directly connected in sequence, wherein the length of the seventh surface section extends only in the circumferential direction around the first axis, the length of the sixth surface section and the length of the eighth surface section each have an extension component in a direction parallel to the first axis, and the sixth surface section and the eighth surface section at least partially overlap in the circumferential direction around the first axis.
In an alternative embodiment, the guide surface comprises a directly connected ninth surface section and a tenth surface section, wherein the length of the ninth surface section extends only in the circumferential direction around the first axis and the length of the tenth surface section has an extension component in the direction parallel to the first axis.
In an alternative design, the abutting part is a rolling pin rotatably connected with the sliding arm, and the rolling pin can be in rolling abutting connection with the guiding curved surface; or alternatively
The abutting part is integrally arranged on the sliding arm.
In an alternative design, the pendulum base comprises a toothed belt part extending in the circumferential direction around the first axis, the first driving device is a cylinder, and the output end of the cylinder is connected with a rack meshed with the toothed belt part; or (b)
The body comprises a detachable cylindrical piece coaxially arranged with the first axis, and the guide curved surface is arranged on the outer peripheral surface of the cylindrical piece; or (b)
The grabbing and placing assembly comprises a second driving device and a working arm, the second driving device is fixed on the sliding arm, the power end of the second driving device is connected with the working arm so as to drive the working arm to move along a second direction, and the working arm comprises a jack extending along the second direction; or (b)
The automatic torsion spring installing mechanism further comprises a product positioning assembly, and the product positioning assembly is used for fixing a product to be provided with the torsion spring.
The application has at least the following beneficial effects:
The automatic torsion spring installing mechanism is simple in structure and ingenious in design, and torsion springs can be installed on products rapidly and efficiently.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following brief description of the drawings of the embodiments will make it apparent that the drawings in the following description relate only to some embodiments of the present application and are not limiting of the present application.
FIG. 1 is a schematic view of a product preloaded with torsion springs according to a first embodiment of the present application.
Fig. 2 is a schematic diagram of a movement trace of the free end of the torsion spring under the guide of the guide curved surface in the first embodiment of the present application, which is a simplified schematic diagram of the action process shown in fig. 8 to 15.
FIG. 3 is a schematic view showing a movement trace of the free end of the torsion spring under the guide of the guide curved surface in accordance with another embodiment of the present application.
FIG. 4 is a schematic view showing a movement trace of the free end of the torsion spring under the guide of the guide curved surface in accordance with still another embodiment of the present application.
FIG. 5 is a schematic diagram of an automatic torsion spring mechanism according to a first embodiment of the present application.
Fig. 6 is an enlarged view of the portion X1 in fig. 5.
FIG. 7 is a schematic view of the automatic torsion spring loading mechanism of FIG. 5 in a first operative condition in which the receptacle in the work arm is aligned with the free end of the torsion spring ready to be threaded through the free end of the torsion spring.
FIG. 8 is a schematic view of the self-loading torsion spring mechanism of FIG. 5 in a second operative condition in which the receptacle in the work arm has been sleeved over the free end of the torsion spring.
Fig. 9 is an enlarged view of the portion X2 of fig. 8.
FIG. 10 is a schematic view of the self-loading torsion spring mechanism of FIG. 5 in a third operating condition.
FIG. 11 is a schematic view of the self-loading torsion spring mechanism of FIG. 5 in a fourth operating condition.
FIG. 12 is a schematic view of the self-loading torsion spring mechanism of FIG. 5 in a fifth operating condition.
FIG. 13 is a schematic view of the self-loading torsion spring mechanism of FIG. 5 in a sixth operating condition.
FIG. 14 is a schematic view of the self-loading torsion spring mechanism of FIG. 5 in a seventh operating condition.
FIG. 15 is a schematic view of the self-loading torsion spring mechanism of FIG. 5 in an eighth operating condition.
Fig. 16 is an enlarged view of the portion X3 in fig. 15.
FIG. 17 is a schematic diagram of an automatic torsion spring mechanism in a second embodiment of the present application.
FIG. 18 is a schematic view of the automatic torsion spring mechanism of FIG. 17 in a first operating condition in which the receptacle in the work arm is aligned with the free end of the torsion spring in preparation for threading the free end of the torsion spring.
FIG. 19 is a schematic view of the self-loading torsion spring mechanism of FIG. 17 in a second operative condition in which the receptacle in the work arm has been sleeved over the free end of the torsion spring.
Reference numerals illustrate:
a-a product, a 1-an abutting surface, a 2-an obstacle, b-a torsion spring, b 1-a free end;
C-a first axis;
f1-a first direction, F2-a second direction;
1-a body;
2-a guiding curved surface, 201-a first surface section, 202-a second surface section, 203-a third surface section, 204-a fourth surface section, 205-a fifth surface section, 206-a sixth surface section, 207-a seventh surface section, 208-a eighth surface section, 209-a ninth surface section, 210-a tenth surface section;
3-swinging seat, 301-guiding and moving hole, 302-toothed belt part;
4-a first drive;
5-a slide arm;
6-grabbing and placing components, 601-second driving devices, 602-working arms and 602 a-jacks;
7-an abutment;
8-racks;
9-a product positioning assembly;
10-spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, embodiments of the application. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present application fall within the protection scope of the present application. It is to be understood that some of the technical means of the various embodiments described herein may be interchanged or combined without conflict.
In the description of the present specification and claims, the terms "first," "second," and the like, if any, are used merely to distinguish between the described objects and do not have any sequential or technical meaning. Thus, an object defining "first," "second," etc. may explicitly or implicitly include one or more such objects. Also, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one, and "a plurality" of "are used to indicate no less than two.
In the description of the present application and the claims, the terms "connected," "mounted," "secured," "received," and the like are to be construed broadly unless otherwise indicated. For example, "connected" may be connected in a split manner, or may be integrally connected; can be directly connected or indirectly connected through an intermediate medium; either non-detachably or detachably. For another example, "accommodated" does not necessarily mean that the whole is completely accommodated, and the concept also includes a case of partial accommodation in which a part protrudes outside. The specific meaning of the aforementioned terms in the present application can be understood by those skilled in the art according to the specific circumstances.
In the description of the present specification and claims, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "horizontal", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of clarity and simplicity to describe the present application, rather than to indicate or imply that the elements referred to must have a specific direction, be constructed and operated in a specific azimuth, these directional terms are relative concepts for relative description and clarity, and may be changed accordingly in accordance with the change in azimuth in which the components are placed in the drawings. For example, if the device is turned over in the figures, elements described as "below" other elements would then be oriented "above" the other elements.
In the description of the present specification and claims, if the terms "sequential", "order", such as the phrase "A, B, C arranged in sequence", are used merely to indicate the arrangement of elements A, B, C, the possibility of arranging other elements between a and B and/or between B and C is not excluded.
In the description of the present specification and claims, the term "configured to" if present, is generally interchangeable with "having … capabilities", "designed to", "used for" or "capable of" depending on the context.
In the description of the present specification and claims, if there is a "direction" with respect to movement, including movement having a directional component, the term "in a direction" is not necessarily to be construed as movement in only that one direction, and the specific meaning of the foregoing terms in the present application may be understood by those skilled in the art according to the specific circumstances.
Embodiments of the present application will now be described with reference to the accompanying drawings.
Figures 5-16 illustrate one embodiment of such an automatically loaded torsion spring mechanism of the present application for further fully loading in place a torsion spring b that has been preloaded onto product a but not fully loaded in place.
In particular, in the present embodiment, as shown in fig. 1, the torsion spring b is only preliminarily mounted to the product a, and one end of the torsion spring b is not fitted in place on the product a, and the aforementioned "one end" is the free end b1 that is disengaged from the product a. The automatic torsion spring loading mechanism of the present embodiment is used for assembling the free end b1 to the abutment surface a1 of the product a, so that the free end b1 of the torsion spring b abuts against the abutment surface a1 of the product a.
In the present embodiment, as shown in fig. 1 in combination with fig. 2, the free end b1 of the torsion spring b is located on the same circumference around the torsion spring b as the abutment surface a1 on the product a, and there are two barriers a2 located on the product a in the circumferential direction between the free end b1 and the abutment surface a 1. Therefore, the free end b1 of the torsion spring b cannot directly reach the abutment surface a1 on the product a along the circumferential direction, and needs to cross over the abutment surface a1 and two barrier portions a2 between the free end b1 in the state of fig. 2 and 6 to smoothly abut against the abutment surface a 1. It can be seen that if the free end b1 of the torsion spring b is moved only in the counterclockwise direction in fig. 6, it cannot be smoothly fitted to the abutment surface a1 because the movement of the free end b1 only in the counterclockwise direction cannot cross the obstacle a2 on the product a.
In another embodiment, as shown in fig. 3 and referring to fig. 1, there is only one obstacle a2 in the circumferential direction between the abutment surface a1 on the product a and the free end b1 of the torsion spring b, and the free end b1 of the torsion spring b cannot directly reach the abutment surface a1 on the product a in the circumferential direction, and it is necessary to span the obstacle a2 between the abutment surface a1 and the free end b1 in the state of fig. 3.
In another embodiment, as shown in fig. 4 and referring to fig. 1, the abutment surface a1 of the free end b1 of the preloaded torsion spring b and the product a are located on two different circumferences around the torsion spring b, and although there is no obstacle a2 for blocking the circumferential movement of the free end b1 between the abutment surface a1 and the free end b1, if the free end b1 of the torsion spring b is only allowed to move circumferentially, it is not allowed to abut against the abutment surface a1 of the product a, and the free end b1 of the torsion spring b must also be allowed to move in the axial direction.
In this embodiment, the self-loading torsion spring mechanism mainly includes a body 1, a swinging seat 3, a first driving device 4, a guiding curved surface 2, a sliding arm 5 and a spring 10. Wherein:
The pendulum 3 is connected to the body 1 in a rotatable manner about the first axis C, i.e. the pendulum 3 is connected to the body 1 and the pendulum 3 is rotatable about the first axis C relative to the body 1. The guide curved surface 2 is provided on the body 1, and the guide curved surface 2 extends continuously. The length of the guide curved surface 2 has a first extension component in a direction around the first axis C and a second extension component in a direction parallel to the first axis C, and the length of the guide curved surface 2 extends not only in a direction parallel to the first axis C but also in a direction around the first axis C. The slide arm 5 is connected to the pendulum base 3 in a manner movable in a first direction F1, wherein the first direction F1 is parallel to the aforementioned first axis C. That is, the slide arm 5 is connected to the pendulum 3, and the slide arm 5 is movable relative to the pendulum 3 in a first direction F1 parallel to the first axis C. The slide arm 5 is provided with an abutment 7 and a catch and release assembly 6 for catching and releasing the end of the torsion spring b (e.g. the free end b1 of torsion spring b in fig. 1). The spring 10 is connected to the slide arm 5 to exert an elastic force on the slide arm in the first direction F1, so that the abutment 7 (under the action of the aforementioned elastic force) is brought into movable abutment against the guide curved surface 2.
In the present embodiment, the guide curved surface 2 is located on a side of the abutting portion 7 facing away from the pick-and-place unit 6 in the first direction F1. In other words, the abutment 7 is located between the guide curved surface 2 and the pick-and-place assembly 6, as seen solely in a direction perpendicular to the first direction F1, which obviously does not mean that the pick-and-place assembly 6, the abutment 7 and the guide curved surface 2 must be on the same straight line extending in the first direction F1. Furthermore, the guiding curved surface 2 is provided in the first direction F1 towards the pick-and-place assembly.
Based on the above structural relationship, the elastic force applied to the slide arm 5 by the spring 10 is directed to the abutment 7 by the pick-and-place unit 6 in the first direction F1.
Those skilled in the art will appreciate that the connection of the slide arm 5 to the pendulum 3 in such a way as to be movable along a first direction F1 parallel to the aforesaid first axis C can be realized in various well known structural designs, in particular in the present embodiment in such a way as to: the swing seat 3 includes a guiding hole 301 penetrating along the first direction F1, that is, the swing seat 3 is formed with the guiding hole 301, and the guiding hole 301 is a through hole penetrating along the first direction F1. The slide arm 5 is movably inserted through the guide hole 301.
The abutment portion 7 and the pick-and-place assembly 6 are respectively located on opposite sides of the guide hole 301 in the first direction F1.
In another embodiment, the swing seat 3 includes a guiding groove penetrating along the first direction F1, and the sliding arm 5 is movably embedded in the guiding groove.
In operation, first the product a preloaded with the torsion spring b is placed and fixed in a corresponding position, preferably ensuring that the axis of the torsion spring b coincides with the first axis C. The free end b1 of the torsion spring b in fig. 7 is then grasped by means of the grasping and releasing assembly 6 provided on the slide arm 5. The pendulum 3 is then driven by the first drive 4 to rotate about the first axis C in a counterclockwise direction in the view of fig. 8, and the pendulum 3 drives the slide arm 5 connected thereto to rotate counterclockwise about the first axis C, so that the slide arm 5 and the body 1, in particular the guide curved surface 2 on the body 1, move relative to each other. The abutting part 7 on the sliding arm 5 always keeps abutting against the guide curved surface 2 under the elastic force of the spring 10 on the sliding arm 5, so that the movement track of the sliding arm 5 is limited by the guide curved surface 2. The curved guide surface 2 has both a first extension component in the direction around the first axis C, which ensures that the slide arm 5 can follow the pendulum 3 for normal rotation-a first movement, and a second extension component in the direction parallel to the first axis C, which allows the slide arm 5 to rotate while also producing a movement parallel to the first axis C-a second movement. It will be appreciated that the first and second movements may be performed simultaneously or in time sequential segments, depending on the particular shape of the guiding curved surface 2, as will be further described below. The first movement in the direction surrounding the first axis C causes the grabbing and placing assembly 6 arranged on the sliding arm 5 to drive the free end b1 of the torsion spring b to move along the circumferential direction of the torsion spring b, so that the pretightening force of the torsion spring b is improved; the aforementioned second movement in the direction parallel to the first axis C causes the catch assembly 6 provided on the slide arm 5 to move the free end b1 of the torsion spring b in the axial direction of the torsion spring b, so that the free end b1 of the torsion spring b can smoothly reach a position facing the abutment surface a1 on the product a (for example, by using the second movement to bypass the related obstacle structure), and then the catch assembly 6 is controlled to release the free end b1 of the torsion spring b, so that the free end b1 abuts against the abutment surface a1 of the product under the action of self elastic force.
In this embodiment, the guiding curved surface 2 includes a first surface section 201, a second surface section 202, a third surface section 203, a fourth surface section 204, and a fifth surface section 205, which are sequentially and directly connected. Wherein the length of the second face segment 202 and the length of the fourth face segment 204 each extend only in a circumferential direction around the first axis C, the length of the first face segment 201, the length of the third face segment 203 and the length of the fifth face segment 205 each have an extension component in a direction parallel to the first axis C, and the second face segment 202 and the fourth face segment 204 are arranged offset in the circumferential direction around the first axis C, and the first face segment 201, the third face segment 203 and the fifth face segment 205 at least partially overlap in the circumferential direction around the first axis C. The effect of the "at least partial overlap" is that: the reciprocating detour of the free end b1 in the axial direction is realized.
It is understood that "extending only in a circumferential direction about the first axis C" means that the lengths of the second and fourth face segments 202, 204 have no component of extension in a direction parallel to the first axis C. "the second face segment 202 and the fourth face segment 204 are offset in the circumferential direction around the first axis C" means that the length of the second face segment 202 is on a different circumference than the length of the fourth face segment 204. This arrangement is advantageous: the processing of the guide curved surface 2 is facilitated, and the smoothness of the movement of the abutting part 7 along the length direction of the guide curved surface 2 is ensured.
Specifically, the main operation of the automatic torsion spring mechanism of this embodiment is shown with reference to fig. 10 to 16 in combination with fig. 2. First, referring to fig. 10 in combination with fig. 2, in fig. 10, the first surface section 201 guides the slider arm 5 and the pick-and-place assembly 6 to rotate counterclockwise about the first axis C by the abutting portion 7 elastically abutting thereto, and also moves outward a distance along the first direction F1 parallel to the first axis C, so that the pick-and-place assembly 6 pulls the free end b1 of the torsion spring b axially to the outside of the blocking portion a2 (i.e., the side facing the observer in fig. 8). Then, referring to fig. 11 in combination with fig. 2, the second surface section 202 guides the pick-and-place assembly 6 to rotate counterclockwise with the free end b1 of the torsion spring b a distance outside the first blocking portion a2, thereby moving the free end b1 of the torsion spring b to the vicinity of the second blocking portion a2 of the abutment surface a 1. Thereafter, referring to fig. 12 in combination with fig. 2, the third face 203 guides the pick-and-place assembly 6 to rotate counterclockwise about the first axis C with the free end b1 of the torsion spring b and also move inward in fig. 12 a distance along the first direction F1 parallel to the first axis C, thereby axially moving the free end b1 of the torsion spring b to the inside (the side away from the viewer in fig. 12) of the second blocking portion a 2. Then, referring to fig. 13 in combination with fig. 2, the fourth surface section 204 guides the pick-and-place assembly 6 to rotate counterclockwise with the free end b1 of the torsion spring b a distance outside the second blocking portion a2, so that the free end b1 of the torsion spring b moves obliquely forward of the abutment surface a 1. Referring to fig. 14 in conjunction with fig. 2, the fifth section 205 guides the pick-and-place assembly 6 with the free end b1 of the torsion spring b to move outwardly to a position directly in front of the abutment surface a1, i.e., directly opposite the abutment surface a 1. Then, referring to fig. 15 in combination with fig. 2, the control unit controls the pick-and-place assembly 6 to release the free end b1 of the torsion spring b, and the free end b1 abuts against the abutment surface a1 under the action of the self-elasticity of the torsion spring b.
In the above-described further embodiment shown in fig. 3, the guide curved surface 2 of the self-loading torsion spring mechanism includes only the sixth surface section 206, the seventh surface section 207, and the eighth surface section 208 which are directly connected in this order, wherein the length of the seventh surface section 207 extends only in the circumferential direction around the first axis C, the length of the sixth surface section 206 and the length of the eighth surface section 208 each have an extension component in the first direction F1, and the sixth surface section 206 and the eighth surface section 208 at least partially overlap in the circumferential direction around the first axis C. In operation, the sixth section 206 is configured to guide the rotation of the free end b1 of the torsion spring b and simultaneously move the free end b1 of the torsion spring b outwardly a distance along the first direction F1 parallel to the first axis C, thereby axially pulling the free end b1 of the torsion spring b to the outside of the blocking portion a 2. The seventh surface section 207 then guides the pick-and-place assembly 6 with the free end b1 of the torsion spring b to rotate a distance outside the blocking portion a2, such that the free end b1 of the torsion spring b moves obliquely forward of the abutment surface a 1. Then, the eighth section 208 guides the gripping and releasing assembly 6 to move inwards to the position right in front of the abutting surface a1, i.e. right in front of the abutting surface a1, with the free end b1 of the torsion spring b, and controls the gripping and releasing assembly 6 to release the free end b1 of the torsion spring b, and the free end b1 abuts against the abutting surface a1 of the product a under the action of the elasticity of the torsion spring b.
In the above-described further embodiment shown in fig. 4, the guide curved surface 2 of the self-loading torsion spring mechanism includes only the ninth surface section 209 and the tenth surface section 210, wherein the length of the ninth surface section 209 extends only in the circumferential direction around the first axis C, and the length of the tenth surface section 210 has an extension component in the direction parallel to the first axis C. In operation, the ninth surface segment 209 guides the guided pick-and-place assembly 6 to rotate a distance with the free end b1 of the torsion spring b, wherein the free end b1 of the torsion spring b is not blocked by the blocking portion a2 during this movement. The tenth surface section 210 then directs the free end b1 of the catch assembly 6 with the torsion spring b to move inwardly a distance along the first direction F1 parallel to the first axis C while rotating counter-clockwise, thereby pushing the free end b1 of the torsion spring b axially directly in front of the abutment surface a1, i.e. directly against the abutment surface a1, controlling the catch assembly 6 to release the free end b1 of the torsion spring b, which free end b1 abuts against the abutment surface a1 of the product a under the spring force of the torsion spring b itself.
The guide curved surface 2 may be a closed annular curved surface (refer to fig. 18 in the second embodiment), and the guide curved surface 2 is provided as a closed annular groove, which has the advantage that the swing arm can be continuously rotated by 360 degrees, so that the first torsion spring b is assembled in place by the pick-and-place assembly 6 and then continuously rotated along the original assembly direction to return to the installation preparation position of the second torsion spring b, thereby continuously completing the installation work of the torsion springs b of the plurality of products a on the assembly line.
In this embodiment, the width of any position of the guide curved surface 2 is perpendicular to the first axis C.
In this embodiment, the body 1 of the self-loading torsion spring mechanism includes a cylindrical member disposed coaxially with the first axis C, and the guide curved surface 2 is disposed on a circumferential surface of the cylindrical member. Specifically, the cylindrical member is a metal disk of stainless steel material, which is detachably fixed to the body 1 by screws.
In the present embodiment, the pendulum seat 3 includes a toothed belt portion 302 extending in a circumferential direction around the first axis C. The first driving device 4 is a cylinder, and an output end of the cylinder is connected to the rack 8, and the rack 8 is meshed with the toothed belt portion 302. When the device works, the cylinder drives the rack 8 to linearly move, and the rack 8 drives the swing arm meshed with the rack 8 to rotate around the first axis C.
Specifically, the toothed belt portion 302 is integrally formed with the main structure of the pendulum 3.
In another embodiment, the pendulum 3 comprises a base body and a gear fixed to the base body and coaxially arranged with the first axis C, wherein a plurality of teeth on the gear form the aforementioned toothed belt portion 302.
In another embodiment, the toothed belt 302 is not provided on the swing arm, and the first driving device 4 is a motor, which is connected to the swing arm where the toothed belt 302 is not provided.
In order to improve the smoothness of the movement of the abutting portion 7 along the guiding curved surface 2, the present embodiment sets the abutting portion 7 as a rolling pin rotationally connected with the sliding arm 5, and the rolling pin can be in rolling contact with the guiding curved surface 2 under the elastic force of the spring 10.
In another embodiment, the abutment 7 is a convex shaft or a smooth curved surface integrally provided on the slide arm 7.
In order to improve the installation quality of the torsion spring b on the product a and ensure the installation yield, a product positioning assembly 9 similar to that shown in fig. 5 can be also configured. When the product positioning assembly 9 works, a product a of the torsion spring b to be installed is fixed, and then the free end b1 of the torsion spring b is correspondingly processed. Alternatively, the product positioning assembly 9 may be a cartridge arrangement.
In the present embodiment, the pick-and-place assembly 6 includes a second drive device 601 and a work arm 602. Wherein the second drive means 601 is fixed to the slide arm 5. The power end of the second driving device 601 is connected to the working arm 602 to drive the working arm 602 to move along the second direction F2, wherein the second direction F2 has a non-zero included angle with the first axis C. The work arm 602 is provided with a socket 602a extending in the second direction F2.
Specifically, the second driving device 601 is also an air cylinder, the cylinder body of the air cylinder is fixed at one end of the sliding arm 5, the output shaft of the air cylinder is connected to the working arm 602, so as to drive the working arm 602 to move along the second direction F2, and the second direction F2 perpendicularly intersects the first axis C.
In another embodiment, the free end b1 of the torsion spring b protrudes towards the pick-and-place assembly 6 in a direction parallel to the first axis C, in which case the second direction F2 may be parallel to the first axis C.
When the device works, the jack 602a on the working arm 602 is aligned with the free end b1 of the torsion spring b, and then the cylinder serving as the second driving device 601 is controlled to drive the working arm 602 to move towards the free end b1 of the torsion spring b, so that the free end b1 of the torsion spring b penetrates into the jack 602a of the working arm 602 to achieve the effect of 'grabbing' the free end b1 of the torsion spring b, and the working arm 602 can drive the free end b1 of the torsion spring b to move towards the abutting surface a1 of the product a. When the free end b1 of the torsion spring b is dragged to a desired position by the working arm 602, the second driving device 601 drives the working arm 602 to move away from the free end b1 of the torsion spring b, and the free end b1 of the torsion spring b is actually released.
In addition, referring to fig. 7 to 15 again, the present embodiment further provides a control method of the automatic torsion spring loading mechanism, which includes:
providing a product a preloaded with a torsion spring b, wherein the torsion spring b has a free end b1 that is disengaged from the product a, and the product a has an abutment surface a1 for abutting the free end b 1;
the grabbing and placing assembly 6 is controlled to grab the free end b1;
Controlling the first driving device 4 to drive the swinging seat 3 to rotate around the first axis C, so that the grabbing and placing assembly 6 drives the free end b1 to move in a first direction (a first direction F1) around the first axis C and a second direction (a second direction F1) parallel to the first axis C; the first movement and the second movement may be performed simultaneously or in sections, as described above;
When the free end b1 is driven by the grabbing and placing assembly 6 to move to be opposite to the abutting surface a1, the free end b1 is released by the grabbing and placing assembly 6, so that the free end b1 abuts against the abutting surface a1 under the action of self elasticity.
< Embodiment two >
Fig. 17 to 19 show a second specific embodiment of the torsion spring mounting structure of the present application, which has substantially the same structure as the first embodiment, and which can be understood with reference to the description of the first embodiment, mainly differs in that:
in the present embodiment, the guiding curved surface 2 is located on a side of the abutting portion 7 facing away from the pick-and-place unit 6 in the first direction F1, and the guiding curved surface 2 is located facing away from the pick-and-place unit in the first direction F1.
The guiding curved surface 2 is located on the side of the abutment 7 facing away from the pick-and-place assembly 6 in the first direction F1, as can be appreciated: the guiding curved surface 2 is located between the pick-and-place assembly 6 and the abutment 7, as seen solely from a direction perpendicular to the first direction F1. Obviously, this does not mean that the pick-and-place assembly 6, the guide curved surface 2 and the abutment 7 must be in the same straight line extending in the first direction F1.
As is clear from the above structural relationship, in the present embodiment, the elastic force applied to the slide arm 5 by the spring 10 is directed to the pick-and-place unit 6 by the abutment portion 7 in the first direction F1. If the direction of the elastic force applied to the slider arm 5 in the first embodiment is referred to as the positive direction of the first direction F1, the direction of the elastic force applied to the slider arm 5 in the present embodiment is the negative direction of the first direction F1.
Claims (10)
1. An automatic torsion spring loading mechanism, comprising:
A body;
A pendulum seat rotatably connected to the body about a first axis;
The first driving device is used for driving the swing seat to rotate around the first axis;
A continuously extending guide curved surface provided on the body, the guide curved surface having a length with an extension component surrounding the first axis and an extension component parallel to the first axis; and
A slider arm movably connected to the swing seat in a first direction, the slider arm being provided with an abutment and a catch assembly for catching and releasing an end of a torsion spring, wherein the first direction is parallel to the first axis;
and the spring is connected with the sliding arm so as to apply elastic force to the sliding arm in the first direction and enable the abutting part to movably abut against the guide curved surface.
2. The self-contained torsion spring mechanism of claim 1, wherein,
The guide curved surface is positioned at one side of the abutting part, which is away from the grabbing and placing assembly in the first direction, and the guide curved surface is arranged towards the grabbing and placing assembly in the first direction; or alternatively
The guide curved surface is positioned on one side of the abutting part facing the grabbing and placing assembly in the first direction, and the guide curved surface is arranged opposite to the grabbing and placing assembly in the first direction.
3. The self-contained torsion spring mechanism of claim 1, wherein the spring is a compression spring or tension spring connected between the wiper arm and the pendulum base.
4. The self-contained torsion spring mechanism of claim 1, wherein,
The swing seat comprises a guide moving hole which is communicated with the first direction, and the sliding arm is movably opposite to the guide moving hole; or alternatively
The swing seat comprises a guide moving groove which is arranged in a penetrating mode along the first direction, and the sliding arm is movably embedded in the guide moving groove.
5. The self-contained torsion spring mechanism of claim 1, wherein the width of any location of the guide curved surface is perpendicular to the first axis.
6. The self-contained torsion spring mechanism according to any one of claims 1 to 5, wherein the guide curved surface includes a first face section, a second face section, a third face section, a fourth face section and a fifth face section that are directly connected in this order, wherein the length of the second face section and the length of the fourth face section each extend only in a circumferential direction around the first axis, the length of the first face section, the length of the third face section and the length of the fifth face section each have an extension component parallel to the first axis direction, the second face section and the fourth face section are offset in a circumferential direction around the first axis, and the first face section, the third face section and the fifth face section at least partially overlap in a circumferential direction around the first axis.
7. The self-contained torsion spring mechanism according to any one of claims 1 to 5, wherein the guide curved surface includes a sixth face section, a seventh face section and an eighth face section that are directly connected in order, wherein a length of the seventh face section extends only in a circumferential direction around the first axis, the length of the sixth face section and the length of the eighth face section each having an extension component in a direction parallel to the first axis, the sixth face section and the eighth face section at least partially overlapping in a circumferential direction around the first axis.
8. The self-contained torsion spring mechanism according to any one of claims 1 to 5, wherein the guide curved surface includes a ninth surface section and a tenth surface section that are directly connected, wherein a length of the ninth surface section extends only in a circumferential direction around the first axis, and a length of the tenth surface section has an extension component in a direction parallel to the first axis.
9. The self-contained torsion spring mechanism according to any one of claims 1 to 5,
The abutting part is a rolling pin rotationally connected with the sliding arm, and the rolling pin can be in rolling contact with the guide curved surface; or alternatively
The abutting part is integrally arranged on the sliding arm.
10. The self-contained torsion spring mechanism according to any one of claims 1 to 5,
The swing seat comprises a toothed belt part extending in the circumferential direction surrounding the first axis, the first driving device is a cylinder, and the output end of the cylinder is connected with a rack meshed with the toothed belt part; or (b)
The body comprises a detachable cylindrical piece coaxially arranged with the first axis, and the guide curved surface is arranged on the outer peripheral surface of the cylindrical piece; or (b)
The grabbing and placing assembly comprises a second driving device and a working arm, the second driving device is fixed on the sliding arm, the power end of the second driving device is connected with the working arm so as to drive the working arm to move along a second direction, and the working arm comprises a jack extending along the second direction; or (b)
The automatic torsion spring installing mechanism further comprises a product positioning assembly, and the product positioning assembly is used for fixing a product to be provided with the torsion spring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111246594.0A CN113752001B (en) | 2021-10-26 | 2021-10-26 | Automatic torsion spring loading mechanism |
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| CN202111246594.0A CN113752001B (en) | 2021-10-26 | 2021-10-26 | Automatic torsion spring loading mechanism |
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| CN113752001A CN113752001A (en) | 2021-12-07 |
| CN113752001B true CN113752001B (en) | 2024-06-14 |
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| CN113829033B (en) * | 2021-10-26 | 2024-06-14 | 苏州科米隆机电有限公司 | Torsional spring mounting mechanism and control method thereof |
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