JP2008014240A - Method and device for assembling swash plate type compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a device for assembling a swash plate type compressor capable of surely automating assembling work without a catch or galling in assembling a pair of shoes and a piston on a swash plate. <P>SOLUTION: This method and this device for assembling the swash plate type compressor are characterized by inserting a means capable of controlling open angle of both flat surfaces of the pair of shoes with retaining the pair of shoes on the piston, starting insertion of the swash plate with controlling open angle of the both of flat surfaces by the open angle control means to open angle with which a gap between the both flat surface at a swash plate insertion start side end part gets larger than thickness of the swash plate, controlling open angle to make the both flat surfaces substantially along both side surfaces of the swash plate by the open angle control means at a stage where an outer circumference end of the swash plate is inserted to a position before a swash plate insertion direction center part between the pair of shoes, making the open angle control means retreat at a stage where the outer circumference end of the swash plate is inserted to a position deeper than the swash plate insertion direction center part, and inserting the swash plate to a final position after retreat, when the pair of shoes retained on one end part of the piston is assembled on the swash plate. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method and an apparatus for assembling a swash plate compressor in which a pair of shoes that are in sliding contact with a swash plate are held at one end of a piston, and in particular, can be automated for assembling a piston holding a pair of shoes to a swash plate. Regarding technology.

  The swash plate compressor is configured, for example, as shown in FIG. The swash plate compressor 101 has a plurality of cylinder bores 103 in a cylinder block 102, and a piston 104 is inserted into each cylinder bore 103 so as to be capable of reciprocating. The rotation of the main shaft 106 extending so as to penetrate the crank chamber 105 is transmitted to the swash plate 109 provided with variable inclination angle through the rotor 107 and the hinge mechanism 108, and the rotational motion of the swash plate 109 is changed to the piston 104. The piston 104 is converted into a reciprocating motion through a pair of shoes 110 slidably contacting the swash plate 109 held at one end of the piston 104. Each of the pair of shoes 110 has a flat surface 110 a that is in sliding contact with the side surface of the swash plate 109 and a spherical surface 110 b that is rotatably engaged with one end of the piston 104. In FIG. 3, reference numeral 111 denotes a valve plate, and 112 denotes a cylinder head. By reciprocation of the piston 104, the fluid to be compressed is sucked into the cylinder bore 103 from the suction chamber 113 formed in the cylinder head 112 through the suction hole 114. The fluid compressed in the cylinder bore 103 is discharged to the discharge chamber 116 formed in the cylinder head 112 through the discharge hole 115, and discharged from there. The stroke of the piston 104 that determines the discharge capacity of the swash plate compressor 101 is determined in accordance with the inclination angle of the swash plate 109. When the inclination angle of the swash plate 109 is variable, it becomes a variable capacity type swash plate compressor, and when the inclination angle of the swash plate 109 is fixed (in this case, the hinge mechanism 108 or the like is unnecessary), it is fixed. It becomes a capacity type swash plate type compressor. In the present application, what is called a swing plate compressor is also included in the swash plate compressor in the present application.

  In assembling such a swash plate compressor 101, it is necessary to sequentially assemble a predetermined number of pistons 104 holding a pair of shoes 110 to the swash plate 109. The assembly of the piston 104 holding the pair of shoes 110 to the swash plate 109 has been conventionally performed, for example, as follows.

  That is, as shown in FIG. 4 ((A) is a plan view and (B) is a side view), a swash plate side assembly 121 in which a rotor 107, a hinge mechanism 108, and a swash plate 109 are assembled to a main shaft 106 is shown. A slide plate 122 (jig) is connected to the swash plate 109, and the piston 104 is prepared so that the slide plate 122 is sandwiched between a pair of shoes 110, and the top of the slide plate 122 is manually shown in FIG. The piston 104 is sequentially transferred to the swash plate 109 while sliding in the direction of the arrow. At this time, the pair of shoes 110 held by the piston 104 is also transferred to the swash plate 109 so as to sandwich both side surfaces on the outer peripheral side of the swash plate 109, and the pistons 104 are sequentially moved through the pair of shoes 110. Will be assembled into.

  When automating the assembly of the pair of shoes 110 and the piston 104 to the swash plate 109, if the current method as described above is to be automated as it is, the piston 110 and the shoe 110 are inclined when the piston 104 is transferred to the swash plate 109. Since there is a high possibility of catching or galling between the plate 109 and the plate 109, it is not suitable for development on a mass production line.

  The reason is considered as follows. That is, the range of standard values for manufacturing the plate thickness T1 of the swash plate 109 is T1min to T1max, and the range of standard values of the clearance δ between the shoe 110 and the swash plate 109 in the assembled state is δmin to δmax. Then, as a distance between the pair of shoes 110 on the slide plate 122 before assembling, a range of T1min + δmin to T1max + δmax must be expected. Accordingly, the thickness T2 of the slide plate 122 must be equal to or less than T1min + δmin. Therefore, a step is inevitably generated between the end portion of the swash plate 109 having the plate thickness T1 and the end portion of the slide plate 122 having the plate thickness T2 (T1> T2). Since the pair of shoes 110 held by the piston 104 is transferred to the swash plate 109 via the stepped portion, there is a high possibility that the shoe 110 may be caught or galling may occur.

In addition, as a technique for assembling a piston holding a pair of shoes to a swash plate, the techniques described in Patent Document 1 and Patent Document 2 are known. There is no description or suggestion of a technique for controlling the pair of shoe opening angles according to the assembly step.
Japanese Patent No. 2996006 Japanese Patent No. 3579481

  Therefore, the object of the present invention is to develop a new assembling method instead of a method (sliding method) in which a pair of shoes and a piston are transferred to a swash plate while sliding on the current slide plate, thereby catching and galling. It is an object of the present invention to provide a method and an apparatus for assembling a swash plate compressor that can reliably automate the assembly without causing any problems.

In order to solve the above problems, a method for assembling a swash plate compressor according to the present invention includes a swash plate that rotates together with a main shaft, a flat surface that is held at one end of a piston and that is in sliding contact with a side surface of the swash plate, and the piston. A swash plate compressor having a spherical surface rotatably engaged with one end of the swash plate, and a pair of shoes disposed on both side surfaces of the swash plate. An assembly method for the pair of shoes,
The swash plate is inserted between the pair of shoes between the pair of shoes in a state where the pair of shoes is held at one end of the piston so that the flat surfaces face each other with a gap therebetween. Insert an opening angle control means capable of controlling the opening angle of both flat surfaces with respect to the swash plate insertion direction,
By the opening angle control means, the opening angle of both flat surfaces is controlled to an insertion start opening angle at which the interval at the swash plate insertion start side end between both flat surfaces is larger than the thickness of the swash plate,
The insertion of the swash plate between the pair of shoes is started in a state where the opening angle of both flat surfaces is controlled to the insertion start opening angle,
When the outer peripheral end of the swash plate is inserted to a position before the center portion in the swash plate insertion direction between the pair of shoes, the opening angle control means determines the opening angle of both flat surfaces. Controlling to a predetermined opening angle substantially along both sides of the swash plate,
When the outer peripheral end of the swash plate is inserted to a position deeper than the center portion in the swash plate insertion direction between the pair of shoes, the opening angle control means is retracted from between the pair of shoes,
In the state where the opening angle control means is retracted, the outer peripheral end of the swash plate is inserted to the final position in the swash plate insertion direction between the pair of shoes. In this method, the swash plate insertion direction in which the swash plate is inserted “relatively” between the pair of shoes and the reason defined by using the phrase “relatively” are actually fixed in a predetermined posture. The piston and the pair of shoes held by the piston are moved with respect to the swash plate held so that the pair of shoes sandwich the swash plate. Since it can be considered that the swash plate is inserted between the pair of shoes, it is defined by such an expression.

  That is, in the assembling method of the swash plate compressor according to the present invention, when the piston holding the pair of shoes is sequentially assembled to the swash plate, the pair of shoes are inclined without using a slide plate as in the conventional method. It opens in a square shape with respect to the plate side, and in that state, the swash plate is relatively inserted between the pair of shoes. The opening angle of the C-shape of the pair of shoes is controlled to the insertion start opening angle at which the distance at the swash plate insertion start end between the flat surfaces of the pair of shoes is larger than the thickness of the swash plate. There is no catch between the end of the swash plate and the pair of shoes at the start of plate insertion, and the angle between the end of the swash plate and the pair of shoes is set not to be too large. No biting occurs. Then, at the stage where the outer peripheral edge of the swash plate is inserted to a position before the center portion in the swash plate insertion direction between the pair of shoes, the opening angle control means determines the opening angle of both flat surfaces. Since the two flat surfaces are substantially parallel to or close to both sides of the swash plate by being controlled to a predetermined opening angle along both sides of the swash plate, insertion of the swash plate thereafter It will be done smoothly without any problems. At the stage where the outer peripheral end of the swash plate is inserted to a position deeper than the center part in the swash plate insertion direction between the pair of shoes, the opening angle control means is retracted from between the pair of shoes, and in the retracted state, By inserting the outer peripheral edge of the swash plate to the final position in the swash plate insertion direction between the pair of shoes, the swash plate is smoothly inserted to the final position in the swash plate insertion direction without any obstacles. As a result, the assembly of the piston holding the target pair of shoes to the swash plate is completed. This series of operations is performed sequentially while rotating the swash plate intermittently by a predetermined angle or by intermittently moving the assembly position of the pair of shoes and pistons by a predetermined angle in the circumferential direction of the swash plate. As a result, each piston is assembled at a predetermined position in the circumferential direction of the swash plate, and the target assembly is completed.

  In the assembling method of the swash plate compressor according to the present invention, the opening angle control means can be controlled independently from each other, as viewed in the relative insertion direction of the swash plate between the pair of shoes. 1st control means arrange | positioned by this, and it can be set as the structure which consists of the 2nd control means arrange | positioned at this side.

  The first control means and the second control means, that is, both of the control means are means for determining an interval between the flat surfaces at each control means insertion position (insertion position between a pair of shoes). It can be set as a structure (1st Embodiment). Alternatively, the first control means includes means for determining an interval between the flat surfaces at the control means insertion position, and the second control means has a surface with which both flat surfaces are brought into contact with each other. A configuration comprising means for directly determining the opening angle of the surface can also be adopted (second embodiment).

  The assembling method of the swash plate compressor according to the present invention can be applied to both the case where the swash plate compressor is composed of a variable capacity compressor and the case where the swash plate compressor is composed of a fixed capacity compressor. It is.

An assembly apparatus for a swash plate compressor according to the present invention includes a swash plate that rotates together with a main shaft, a flat surface that is held at one end of a piston and that is in sliding contact with a side surface of the swash plate, and an end of the piston that is freely rotatable. An assembly device for the pair of shoes on both side surfaces of the swash plate, in a swash plate compressor having a pair of spherical surfaces and a pair of shoes disposed on both side surfaces of the swash plate There,
The pair of shoes are inserted between the two flat surfaces in a state where the pair of shoes are held at one end of the piston so that the flat surfaces are opposed to each other with a gap, and the swash plate is relative to the pair of shoes. The opening angle control means is capable of controlling the opening angle of both flat surfaces with respect to the insertion direction of the swash plate inserted into the swash plate, and the opening angle control means determines the opening angle of both flat surfaces and the swash plate between the two flat surfaces. The insertion start opening angle is controlled so that the interval at the insertion start side end portion is larger than the thickness of the swash plate, and the outer peripheral end of the swash plate inserted between the pair of shoes is inserted into the swash plate between the pair of shoes. When the flat surface is inserted to a position before the center in the direction, the opening angle of both flat surfaces is controlled to a predetermined opening angle along which both flat surfaces substantially extend along both side surfaces of the swash plate, and The swash plate insertion direction between the pair of shoes is the outer peripheral edge of the plate In step also inserted to a position on the back side of the Hisashibu consists assembling apparatus comprises a means which is retracted from between the pair of shoes.

  In this swash plate compressor assembly apparatus, the opening angle control means is a first control device that is arranged on the back side as viewed in the relative insertion direction of the swash plate between the pair of shoes and can be controlled independently of each other. The control means and the second control means arranged on the near side can be used.

  The first control means and the second control means, that is, both of the control means may be configured by means for determining an interval between the flat surfaces at each control means insertion position (the first control means). The first control means comprises means for determining the distance between the flat surfaces at the control means insertion position, and the second control means has a surface on which both flat surfaces abut. It is also possible to adopt a configuration comprising means for directly determining the opening angle of both flat surfaces (second embodiment).

  In the case of the first embodiment, the first control means and the second control means each have a pair of pins, and the means for determining the distance between the flat surfaces by controlling the distance between the pins. It can be set as the structure which becomes. In this case, it is preferable that the second control means comprises means that can move in the same direction as the outer peripheral end of the swash plate advances in the swash plate insertion direction.

  In the case of the second embodiment, the first control means may include a pair of pins and a means for determining the distance between the flat surfaces by controlling the distance between the pins. The second control means can be, for example, a means in which the cross section has a trapezoidal shape, and both sides forming both sides of the trapezoid are brought into contact with the flat surfaces to directly determine the opening angle of the flat surfaces. It can be set as the structure which becomes.

  Such an assembly apparatus for a swash plate compressor according to the present invention is also applicable to both cases where the swash plate compressor is composed of a variable capacity compressor and where the swash plate compressor is composed of a fixed capacity compressor. It can be done.

  According to the assembling method and apparatus of the swash plate compressor according to the present invention, the opening angle of the pair of shoes held by the piston during the relative insertion operation with the swash plate is appropriately controlled by the opening angle control means, and the state Since the swash plate can be inserted between the pair of shoes, the pair of shoes and the piston can be securely assembled to the swash plate without being caught or galling. As a result, this assembling work can be automated, and the productivity of the swash plate compressor in mass production can be greatly increased.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
The configuration example of the swash plate compressor is as shown in FIG. 3, and the assembling method and apparatus of the swash plate compressor according to the present invention is a variable capacity compressor, fixed capacity type as long as it is a swash plate compressor. It can be applied to any compressor. In the following, the first embodiment and the second embodiment will be described with reference to the main parts of the method and apparatus.

  FIG. 1 shows an example of an assembling method and apparatus for a swash plate compressor according to the present invention, and particularly shows an example of a series of operations in the first embodiment described above. In FIG. 1, reference numeral 1 denotes a pair of shoes held at one end of the piston 2, which is in sliding contact with both side surfaces of the swash plate 3 after assembly. Each shoe 1 has a flat surface 1 a that is slidably contacted with the swash plate 3 and a spherical surface 1 b that is rotatably engaged with one end of the piston 2. In the present embodiment, the opening angle control means can be controlled independently of each other, the first control means 4 disposed on the back side in the relative insertion direction of the swash plate 3 between the pair of shoes 1, and the near side The first control means 4 and the second control means 5 are both means for determining the distance between the flat surfaces 1a of the pair of shoes 1 at each control means insertion position. It is configured. More specifically, each of the first control unit 4 and the second control unit 5 includes a pair of pins, and includes a unit that determines a distance between the flat surfaces 1a by controlling a distance between the pins. ing. Further, the second control means 5 is composed of means that can move in the same direction as the outer peripheral end of the swash plate advances in the swash plate insertion direction.

  A series of operations in FIGS. 1A to 1E will be described. In the step shown in FIG. 1A, the first control means 4 and the second control means 5 are inserted between the flat surfaces 1a of the pair of shoes 1 so that the first control means 4 is closed (pin The second control means 5 is actuated in the direction in which the distance between the pins is reduced (in the direction in which the distance between the pins is widened). By this operation, the two flat surfaces 1a are opened in a C shape with respect to the swash plate insertion direction in which the swash plate 3 is relatively inserted between the pair of shoes 1, and the opening angle is between the flat surfaces 1a. The interval at the swash plate insertion start side end is controlled to be larger than the thickness of the swash plate 3. In this state, relative insertion of the swash plate 3 is started. Since the flat surfaces 1a of the pair of shoes 1 are opened in a C-shape, and the distance between the flat surfaces 1a at the distal ends of the opened pair of shoes 1 is larger than the thickness of the swash plate 3, the pair of shoes 1 The tip of the swash plate 3 inserted between them is not caught by the shoe 1. Further, since the opening angle is controlled so as not to be too large, the tip of the swash plate 3 is not galling with respect to the flat surface 1a.

  Next, in the step shown in FIG. 1B, the outer peripheral end (insertion-side tip) of the swash plate 3 inserted between the pair of shoes 1 is in front of the center portion of the pair of shoes 1 in the swash plate insertion direction. When the first control means 4 is inserted to the position, the first control means 4 is operated in the opening direction (in the direction in which the distance between the pins is widened), and the second control means 5 is in the closing direction (in the direction in which the distance between the pins is narrowed). ) So that the opening angle of both flat surfaces 1a becomes a predetermined opening angle substantially along both side surfaces of the swash plate 3 (that is, both flat surfaces 1a are of the swash plate 3). Controlled to be substantially parallel to both sides). In this state, since both flat surfaces 1a are substantially parallel to both side surfaces of the swash plate 3, the swash plate 3 can be further smoothly interposed between the two flat surfaces 1a without being caught or galling. It is ready to be inserted.

  In this state, in the step shown in FIG. 1C, the swash plate 3 is inserted between the pair of shoes 1. The outer peripheral end (insertion end) of the swash plate 3 is inserted between the pair of shoes 1. The second control means 5 that is inserted to reach the position on the far side from the central portion in the direction and is closed at the same time is pushed by the outer peripheral end (insertion-side front end) of the swash plate 3, and the outer peripheral end of the swash plate 3 Along with the (insertion-side tip), the swash plate is moved further to the back than the center in the insertion direction. During this operation, the pair of shoes 1 is maintained in a stable posture so that both flat surfaces 1a are substantially parallel by both side surfaces of the swash plate 3 and the first control means 4 being opened. It is.

  When the outer peripheral end (insertion-side tip) of the swash plate 3 is inserted to the far side from the central portion in the swash plate insertion direction, the first control means 4 that has been opened in the step shown in FIG. The closed first control means 4 and the closed second control means 5 are retracted from between the pair of shoes 1. At this time, since the outer peripheral end (insertion-side tip) of the swash plate 3 is inserted deeper than the central portion in the swash plate insertion direction, more than half of both flat surfaces 1 a of the pair of shoes 1 are on both sides of the swash plate 3. As a result, the pair of shoes 1 are maintained in a stable predetermined posture only by the swash plate 3.

  When the first control means 4 and the second control means 5 are retracted, there is no obstacle in the swash plate insertion direction. Therefore, in the step shown in FIG. The outer peripheral end (insertion end) is inserted to the final position in the swash plate insertion direction between the pair of shoes 1, and a series of operations for assembling the pair of shoes 1 and the piston 2 to the swash plate 3 is completed.

  The swash plate 3 is intermittently rotated by a predetermined angle, or the assembly position of the pair of shoes 1 and the piston 2 is intermittently moved in the circumferential direction of the swash plate 3 by a predetermined angle to If the above-described series of assembling operations are sequentially performed for each predetermined position in the direction, the assembly of a predetermined number of the pair of shoes 1 and pistons 2 to the swash plate 3 is completed. In practice, this assembly may be performed on a swash plate assembly in which the swash plate 3 is incorporated in the main shaft, as shown in FIG.

  The series of operations for assembling the pair of shoes 1 and the piston 2 to the swash plate 3 does not require the use of a slide plate as in the conventional method, so there is no possibility of occurrence of catching or galling. The first control means 4 and the second control means 5 having a pair of pins can be easily designed by a normal design method, both mechanically and in a series of operations. Therefore, the assembly of the pair of shoes 1 and the piston 2 to the swash plate 3 can be easily automated. By automating this process that has traditionally relied on manual work, it is possible to fully automate the assembly of the compressor (at least most of the processes can be automated). This makes it possible to save labor and reduce costs in compressor mass production.

  FIG. 2 shows another example of a method and apparatus for assembling a swash plate compressor according to the present invention, and particularly shows an example of a series of operations in the second embodiment described above. Compared to the example shown in FIG. 1, in the example shown in FIG. 2, the second control means 6 has a surface with which the flat surfaces 1 a of the pair of shoes 1 are in contact with each other, and both flat surfaces 1 a by the corresponding contact. It is composed of means for directly determining the opening angle. In particular, in this example, the second control means 6 has a trapezoidal cross section, and both surfaces forming both sides of the trapezoid form a surface that is in contact with both flat surfaces 1 a of the pair of shoes 1. Consists of means. As in the example shown in FIG. 1, the second control means 6 does not need to be configured as a means that can move in the same direction as the outer peripheral end of the swash plate 3 advances in the swash plate insertion direction. Other configurations are the same as those shown in FIG.

  A series of operations in FIGS. 2A to 2F will be described. FIG. 2A shows a state in which the pair of shoes 1 is held by the piston 2 before the first control means 4 and the second control means 6 are inserted between the pair of shoes 1. . Before the relative insertion of the swash plate 3, in the step shown in FIG. 2B, the first control means 4 is closed between the flat surfaces 1a of the pair of shoes 1 (the pair of pins The second control means 6 is inserted at a predetermined position on the rear side in the swash plate insertion direction, and at a predetermined position on the front side in the swash plate insertion direction. When the second control means 6 is inserted to a predetermined position, as shown in FIG. 2C, the two flat surfaces 1a of the pair of shoes 1 form a second side that forms both sides of the trapezoid with a trapezoidal cross section. The swash plate 3 is relatively inserted between the pair of shoes 1 by contact with both surfaces of the control means 6 and the contact between both surfaces of the second control means 6 and the flat surfaces 1 a of the pair of shoes 1. Both flat surfaces 1a are opened in a C shape with respect to the incoming swash plate insertion direction, and the opening angle between the two flat surfaces 1a is greater than the thickness of the swash plate 3 at the end of the swash plate insertion side. To be controlled. The length of the trapezoidal base of the trapezoidal cross section of the second control means 6 is preferably set to be the same as or slightly smaller than the thickness of the swash plate 3. In such a setting, as shown in FIG. 2 (C), the predetermined insertion position of the second control means 6 is inevitably the position of the trapezoid base is the central part of the swash plate insertion direction or more. Also on the back side slightly. In this state, relative insertion of the swash plate 3 is started. Since the flat surfaces 1a of the pair of shoes 1 are opened in a C-shape, and the distance between the flat surfaces 1a at the distal ends of the opened pair of shoes 1 is larger than the thickness of the swash plate 3, the pair of shoes 1 The tip of the swash plate 3 inserted between them is not caught by the shoe 1. Further, by setting the trapezoidal shape of the cross section of the second control means 6 so that the opening angle does not become too large, galling or the like with respect to the flat surface 1a at the tip of the swash plate 3 does not occur.

  Next, in the step shown in FIG. 2D, the outer peripheral end (insertion-side tip) of the swash plate 3 inserted between the pair of shoes 1 is in front of the center portion of the pair of shoes 1 in the swash plate insertion direction. When inserted to the position, the first control means 4 is actuated in the opening direction (in the direction in which the distance between the pins is widened), and the opening angle of both flat surfaces 1a is substantially equal to the swash plate. 3 so as to have a predetermined opening angle along both side surfaces (that is, both flat surfaces 1a are substantially parallel to both side surfaces of the swash plate 3). At this time, the length of the trapezoid base of the second control means 6 having a trapezoidal cross section is set to be equal to or slightly smaller than the thickness of the swash plate 3, so that both flat surfaces 1 a are controlled in the second control. The second control means 6 does not interfere with the predetermined opening angle control of the flat surfaces 1a. At this stage, the second control means 6 finishes its role. In this state, the two flat surfaces 1a are substantially parallel to both side surfaces of the swash plate 3, so that the swash plate 3 can smoothly move between the two flat surfaces 1a without being caught or galling. It becomes possible to be further inserted into.

  In this state, in the step shown in FIG. 2 (E), the second control means 6 is retracted from between the pair of shoes 1, and in this state, the swash plate 3 is inserted between the pair of shoes 1. The swash plate 3 is inserted until the outer peripheral end (insertion-side tip) of the swash plate 3 reaches a position on the back side of the center portion in the swash plate insertion direction between the pair of shoes 1. During this operation, the pair of shoes 1 is maintained in a stable posture so that both flat surfaces 1a are substantially parallel by both side surfaces of the swash plate 3 and the first control means 4 being opened. It is.

  As shown in FIG. 2 (F), when the outer peripheral end (insertion-side tip) of the swash plate 3 is inserted to the far side from the central portion in the swash plate insertion direction, the opened first control means 4 is Closed and retracted from between the pair of shoes 1, the outer peripheral end (insertion end) of the swash plate 3 is the last in the swash plate insertion direction between the pair of shoes 1, with no obstacles in the swash plate insertion direction. Inserted to the position, a series of operations for assembling the pair of shoes 1 and piston 2 to the swash plate 3 is completed. When the first control means 4 is retracted, the outer peripheral end (insertion-side tip) of the swash plate 3 is inserted to the far side from the central portion in the swash plate insertion direction, so half of both flat surfaces 1a of the pair of shoes 1 The above is supported or engaged with both side surfaces of the swash plate 3, and the pair of shoes 1 is maintained in a stable predetermined posture only by the swash plate 3. In this state, the swash plate 3 is in the final position in the insertion direction. Will be inserted.

  Also in this example, the swash plate 3 is intermittently rotated by a predetermined angle, or the assembly position of the pair of shoes 1 and the piston 2 is intermittently moved by a predetermined angle in the circumferential direction of the swash plate 3, If the above-described series of assembling operations are sequentially performed on each predetermined position in the circumferential direction of the swash plate 3, the assembly of a predetermined number of the pair of shoes 1 and pistons 2 to the swash plate 3 is completed. In practice, this assembly may be performed on a swash plate assembly in which the swash plate 3 is incorporated in the main shaft, as shown in FIG.

  Also in this example, the above-described series of operations for assembling the pair of shoes 1 and piston 2 to the swash plate 3 does not require the use of a slide plate as in the conventional method. There is no fear. The first control means 4 having a pair of pins and the second control means 6 having a trapezoidal cross section can be easily designed by a normal design method, both mechanically and in a series of operations. Therefore, the assembly of the pair of shoes 1 and the piston 2 to the swash plate 3 can be easily automated. By automating this process that has traditionally relied on manual work, it is possible to fully automate the assembly of the compressor (at least most of the processes can be automated). This makes it possible to save labor and reduce costs in compressor mass production.

  The present invention can be applied to any swash plate type compressor in which a stone holding a pair of shoes is assembled to a swash plate, and can be applied to both a variable capacity type compressor and a fixed capacity type compressor.

It is a schematic side view of a pair of shoes, a piston, a swash plate, and an opening angle control means showing an assembly operation flow in an example of an assembling method and apparatus for a swash plate compressor according to the present invention. It is a schematic side view of a pair of shoes, a piston, a swash plate, and an opening angle control means which shows the assembly | attachment operation | movement flow in another example of the assembly method and apparatus of the swash plate type compressor which concerns on this invention. It is a longitudinal section showing an example of a swash plate type compressor as a subject of the present invention. It is the schematic plan view (FIG. 4 (A)) and schematic side view (FIG. 4 (B)) which show an example of the assembly method and apparatus of the swash plate type compressor which concern on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pair of shoes 1a Flat surface 1b Spherical surface 2 Piston 3 Swash plate 4 1st control means 5 and 6 2nd control means 106 Main axis

Claims (16)

A swash plate that rotates together with the main shaft, a flat surface that is held at one end of the piston and that slidably contacts the side surface of the swash plate, and a spherical surface that rotatably engages with one end of the piston. In a swash plate type compressor comprising a pair of shoes disposed on both side surfaces, a method for assembling the pair of shoes on both side surfaces of the swash plate,
The swash plate is inserted between the pair of shoes between the pair of shoes in a state where the pair of shoes is held at one end of the piston so that the flat surfaces face each other with a gap therebetween. Insert an opening angle control means capable of controlling the opening angle of both flat surfaces with respect to the swash plate insertion direction,
By the opening angle control means, the opening angle of both flat surfaces is controlled to an insertion start opening angle at which the interval at the swash plate insertion start side end between both flat surfaces is larger than the thickness of the swash plate,
The insertion of the swash plate between the pair of shoes is started in a state where the opening angle of both flat surfaces is controlled to the insertion start opening angle,
When the outer peripheral end of the swash plate is inserted to a position before the center portion in the swash plate insertion direction between the pair of shoes, the opening angle control means determines the opening angle of both flat surfaces. Controlling to a predetermined opening angle substantially along both sides of the swash plate,
When the outer peripheral end of the swash plate is inserted to a position deeper than the center portion in the swash plate insertion direction between the pair of shoes, the opening angle control means is retracted from between the pair of shoes,
With the opening angle control means retracted, the outer peripheral end of the swash plate is inserted to the final position in the swash plate insertion direction between the pair of shoes.
A method for assembling a swash plate compressor.   The opening angle control means is arranged on the front side and first control means arranged on the back side in the relative insertion direction of the swash plate between the pair of shoes, which can be controlled independently of each other. The method for assembling a swash plate compressor according to claim 1, comprising second control means.   3. A method for assembling a swash plate compressor according to claim 2, wherein the first control means and the second control means comprise means for determining an interval between the flat surfaces at each control means insertion position.   The first control means includes means for determining an interval between the flat surfaces at the control means insertion position, and the second control means has a surface with which both flat surfaces are in contact with each other. The method for assembling a swash plate compressor according to claim 2, comprising means for directly determining the opening angle.   The method for assembling a swash plate compressor according to any one of claims 1 to 4, wherein the swash plate compressor comprises a variable capacity compressor.   The assembling method of the swash plate type compressor according to any one of claims 1 to 4, wherein the swash plate type compressor comprises a fixed capacity type compressor. A swash plate that rotates together with the main shaft, a flat surface that is held at one end of the piston and that slidably contacts the side surface of the swash plate, and a spherical surface that rotatably engages with one end of the piston. In a swash plate type compressor comprising a pair of shoes disposed on both side surfaces, an assembly device for the pair of shoes on both side surfaces of the swash plate,
The pair of shoes are inserted between the two flat surfaces in a state where the pair of shoes are held at one end of the piston so that the flat surfaces are opposed to each other with a gap, and the swash plate is relative to the pair of shoes. The opening angle control means is capable of controlling the opening angle of both flat surfaces with respect to the insertion direction of the swash plate inserted into the swash plate, and the opening angle control means determines the opening angle of both flat surfaces and the swash plate between the two flat surfaces. The insertion start opening angle is controlled so that the interval at the insertion start side end portion is larger than the thickness of the swash plate, and the outer peripheral end of the swash plate inserted between the pair of shoes is inserted into the swash plate between the pair of shoes. When the flat surface is inserted to a position before the center in the direction, the opening angle of both flat surfaces is controlled to a predetermined opening angle along which both flat surfaces substantially extend along both side surfaces of the swash plate, and The swash plate insertion direction between the pair of shoes is the outer peripheral edge of the plate In step inserted to a position on the rear side than Hisashibu Assembly device of the swash plate type compressor which comprises a means which is retracted from between the pair of shoes.   The opening angle control means is arranged on the front side and first control means arranged on the back side in the relative insertion direction of the swash plate between the pair of shoes, which can be controlled independently of each other. The swash plate compressor assembly apparatus according to claim 7, comprising second control means.   9. The assembly apparatus for a swash plate compressor according to claim 8, wherein the first control means and the second control means comprise means for determining an interval between the flat surfaces at each control means insertion position.   The swash plate compression according to claim 9, wherein each of the first control means and the second control means includes a pair of pins, and includes means for determining an interval between the flat surfaces by controlling an interval between the pins. Machine assembly equipment.   The swash plate compressor assembly apparatus according to claim 10, wherein the second control means comprises means capable of moving in the same direction as the outer peripheral end of the swash plate advances in the swash plate insertion direction.   The first control means includes means for determining an interval between the flat surfaces at the control means insertion position, and the second control means has a surface with which both flat surfaces are in contact with each other. 9. The assembling apparatus for a swash plate compressor according to claim 8, comprising means for directly determining an opening angle.   The swash plate compressor assembly apparatus according to claim 12, wherein the first control means includes a pair of pins, and includes means for determining a distance between the flat surfaces by controlling a distance between the pins.   The said 2nd control means consists of a means in which a cross section becomes a trapezoid and the both surfaces which form the both sides of this trapezoid contact | abut both said flat surfaces, and determine the opening angle of both these flat surfaces directly. Or the assembly apparatus of the swash plate type compressor of Claim 13.   The swash plate compressor assembly apparatus according to any one of claims 7 to 14, wherein the swash plate compressor is a variable displacement compressor.   The swash plate compressor assembly apparatus according to any one of claims 7 to 14, wherein the swash plate compressor comprises a fixed capacity compressor.

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