Press-fitting crimping device

Abstract

The present invention provides a press-fitting and crimping device that can perform press-fitting and crimping without changing stages, and can apply force in a linear direction to perform crimping. [Solution] The press-fit crimping device 1 includes an arrangement section 10 for arranging a first workpiece M10 and a second workpiece M20, a press-fit section 20 for press-fitting the second workpiece M20 into the insertion section M11 by pressing the first workpiece M10, a pressing means 30 for pressing the press-fit section 20, a contraction means 40 disposed between the press-fit section 20 and the pressing means 30 that contracts when subjected to a load exceeding a predetermined value, a crimping section 50 for crimping the first workpiece M10, and an interlocking means 60 disposed between the crimping section 50 and the pressing means 30. The interlocking means 60 includes a first pressing member 61 that is pressed by the pressing means 30 and is movable in a first direction Y, and a second pressing member 62 that is pressed by the first pressing member 61 and is movable in a second direction X.

Description

Technical Field

[0005] , ,

[0001] The present invention relates to a press-fitting and caulking device for performing press-fitting and caulking.

Background Art

[0002] In the manufacture of solenoids, for example, after press-fitting a shaft onto a plunger, caulking is performed. There is a step of joining. Conventionally, a press-fitting machine and a caulking machine were used, and the process was carried out in two steps: a press-fitting step by the press-fitting machine and a caulking step by the caulking machine. Therefore, it was necessary to change the workpiece, which was a problem in that it took time and effort. There was also a problem in that two machines were required, resulting in high costs.

[0003] Also, for example, Patent Document 1 describes a bearing press-fitting and caulking device that can press-fit a bearing onto the end of a thin-walled steel pipe and perform caulking almost simultaneously. In this device, the bearing is press-fitted by lowering the punch body, and when the outer punch housing is lowered, the pressing portion of the caulking claw is pressed, causing the caulking claw to move and completing the caulking. However, in this device, since the caulking is performed while tracing a rotational locus, there are restrictions on the caulking shape. For example, there was a problem in that caulking could not be performed perpendicular to the press-fitting direction.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The present invention has been made based on such problems, and an object thereof is to provide a press-fitting and caulking device that can perform press-fitting and caulking without changing the workpiece and can perform caulking by applying a force in a linear direction.

Means for Solving the Problems

[0006] The press-fit crimping device of the present invention joins a first workpiece and a second workpiece by press-fitting a second workpiece into an insertion portion of a first workpiece and crimping the first workpiece by pressing it, and comprises an arrangement portion for arranging the first workpiece and the second workpiece, a press-fitting portion for press-fitting the second workpiece into the insertion portion by pressing the first workpiece, a pressing means for pressing the press-fitting portion, a contraction means disposed between the press-fitting portion and the pressing means and contracting when subjected to a load exceeding a predetermined value, a crimping portion for pressing and crimping the first workpiece, a first pressing member disposed between the crimping portion and the pressing means and movable in a first direction when pressed by the pressing means, and an interlocking means having a second pressing member movable in a second direction different from the first direction when pressed by the first pressing member and pressing the crimping portion. [Effects of the Invention]

[0007] According to the present invention, the pressing means presses the press-fitting portion via the contraction means, and the crimping portion presses via the interlocking means. As a result, the press-fitting portion presses the first workpiece, allowing the second workpiece to be press-fitted into the first workpiece, and the crimping portion presses the first workpiece, allowing it to be crimped. Therefore, press-fitting and crimping can be performed without changing stages.

[0008] Furthermore, since a shrinking means that contracts when subjected to a load exceeding a predetermined value is placed between the press-fitting portion and the pressing means, when the crimping portion is pressed and crimped by the pressing means, the shrinking means contracts, preventing a load exceeding a predetermined value from being applied to the first workpiece, and allowing the first and second workpieces to be crimped without being crushed.

[0009] Furthermore, by arranging an interlocking mechanism between the crimping portion and the pressing means, which includes a first pressing member disposed to be movable in a first direction when pressed by the pressing means, and a second pressing member disposed to be movable in a second direction different from the first direction when pressed by the first pressing member, the second pressing member can move in the second direction and apply force to the first workpiece in a linear direction, allowing for horizontal crimping, for example. In addition, there are no restrictions on the crimping shape, and various types of crimping are possible by changing the tip shape of the crimping portion.

[0010] Furthermore, if a first inclined surface is provided on the first pressing member and a second inclined surface is provided on the second pressing member, and the first and second inclined surfaces are parallel to each other and facing each other, and as the first pressing member moves in the first direction, the first inclined surface comes into contact with the second inclined surface and presses, causing the second pressing member to move in the second direction, the second pressing member can be easily moved in the second direction which is different from the first direction, and the first workpiece can be easily crimped by applying force linearly. [Brief explanation of the drawing]

[0011] [Figure 1] This is a diagram showing the configuration of a press-fit crimping device according to one embodiment of the present invention. [Figure 2] This figure shows an example of the configuration of workpieces to be joined using the press-fit crimping device shown in Figure 1. [Figure 3] This is a magnified view of a part of the press-fit crimping device shown in Figure 1. [Figure 4] This diagram illustrates the operation of the press-fit crimping device shown in Figure 1. [Figure 5] This diagram illustrates the operation that follows Figure 4. [Figure 6] This diagram illustrates the actions that follow Figure 5. [Modes for carrying out the invention]

[0012] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0013] Figure 1 shows the configuration of a press-fit crimping device 1 according to one embodiment of the present invention. Figure 2 shows an example of the configuration of workpieces to be joined by the press-fit crimping device 1. Figure 3 shows a magnified view of a part of the press-fit crimping device 1. Figures 4 to 6 show the operation of the press-fit crimping device 1.

[0014] This press-fit crimping device 1 joins the first workpiece M10 and the second workpiece M20 by press-fitting the second workpiece M20 into the insertion portion M11 of the first workpiece M10 and then pressing and crimping the first workpiece M10.

[0015] The first workpiece M10 and the second workpiece M20 are not limited as long as the first workpiece M10 has a concave or perforated insertion portion M11, and the second workpiece M20 is joined by press-fitting it into the insertion portion M11 and crimping it. Specifically, for example, as shown in Figure 2, the first workpiece M10 may be a plunger used in a solenoid, and the second workpiece M20 may be a shaft used in a solenoid, etc.

[0016] The press-fit crimping device 1 comprises an arrangement section 10 for arranging the first workpiece M10 and the second workpiece M20, a press-fitting section 20 for press-fitting the second workpiece M20 into the insertion section M11 by pressing the first workpiece M10, a pressing means 30 for pressing the press-fitting section 20, a contraction means 40 disposed between the press-fitting section 20 and the pressing means 30 which contracts when subjected to a load exceeding a predetermined value, a crimping section 50 for pressing and crimping the first workpiece M10, and an interlocking means 60 disposed between the crimping section 50 and the pressing means 30.

[0017] The placement section 10, press-fitting section 20, shrinking means 40, crimping section 50, and interlocking means 60 are arranged, for example, inside the frame 70, and the pressing means 30 is arranged, for example, on top of the frame 70.

[0018] The arranging unit 10 is for arranging, for example, the first workpiece member M10 and the second workpiece member M20 to face each other. The arranging unit 10 is disposed, for example, on a mounting table 71 disposed at the bottom of the frame body 70. The arranging unit 10 is provided with, for example, an arranging first recess 11 for inserting and arranging the second workpiece member M20, and above the arranging first recess 11, there is provided an arranging second recess 12 larger than the arranging first recess 11 into which the first workpiece member M10 can be inserted.

[0019] The press-fitting unit 20 is disposed, for example, so as to face the arranging unit 10. The press-fitting unit 20 is disposed, for example, with respect to the shrinking means 40, and is configured to be pressed by the pressing means 30 via the shrinking means 40.

[0020] The pressing means 30 is not particularly limited as long as it is a pressure source that can operate in a linear motion in the vertical direction to apply pressure. Examples of the pressing means 30 preferably include a press machine such as a servo press.

[0021] The shrinking means 40 is configured to not shrink under the load when the pressing means 30 is operated to press the first workpiece member M10 by the press-fitting unit 20 and press-fit the second workpiece member M20 into the insertion portion M11, and to shrink according to the load when a load larger than that is applied. After the press-fitting unit 20 is moved by the pressing means 30 to press-fit the second workpiece member M20 into the first workpiece member M10, and then the pressing means 30 is further operated to move the caulking unit 50, this is to prevent the first workpiece member M10 and the second workpiece member M20 from being crushed by the load without applying an excessive load to the first workpiece member M10.

[0022] The contraction means 40 is not particularly limited, as long as it has the function of contracting when the load exceeds a predetermined value. Examples of preferred contraction means 40 include gas springs, coil springs, and air cylinders. Furthermore, it is preferable that the contraction means 40 has an expansion and contraction function, for example, that it contracts in accordance with the load as the load increases and expands in accordance with the load as the load decreases. The contraction means 40 is disposed relative to the pressing means 30 by an arrangement member 41, for example, and is configured to work in conjunction with the pressing means 30.

[0023] The crimping portion 50 is, for example, pin-shaped, and multiple portions are provided according to the crimping position. The crimping portion 50 is arranged to crimp the first workpiece M10 by pressing it from the side, and is movably arranged through a crimping through-hole 13 provided linearly in the arrangement portion 10.

[0024] The interlocking mechanism 60 is disposed between the crimping portion 50 and the pressing mechanism 30, and is used to move the crimping portion 50 by the pressing mechanism 30. The interlocking mechanism 60 has a first pressing member 61 which is disposed to be movable in a first direction Y when pressed by the pressing mechanism 30, and a second pressing member 62 which is disposed to be movable in a second direction X different from the first direction Y when pressed by the first pressing member 61, and presses the crimping portion 50. The first direction Y is the pressing direction by the pressing mechanism 30, and is the same as the direction of movement of the press-fitting portion 20. The second direction X is not particularly limited as long as it is different from the first direction Y, and can be set arbitrarily. In other words, the interlocking mechanism 60 is used to press the crimping portion 50 in a second direction X which is different from the first direction Y, which is the pressing direction of the pressing mechanism 30. Note that Figure 1 shows the case where the first direction Y is the vertical direction and the second direction X is the horizontal direction.

[0025] The first pressing member 61 extends in a first direction Y and is arranged parallel to the contraction means 40, and multiple first pressing members are provided corresponding to the crimping portion 50. The first pressing member 61 is arranged relative to the mounting member 41 by a connecting member 63 and is configured to work in conjunction with the pressing means 30. A first guide member 64 and a second guide member 65 are provided on the tip side of the first pressing member 61 in the first direction Y to guide the direction of movement of the first pressing member 61. The first guide member 64 is arranged relative to the connecting member 63 via a mounting member 66 and is configured to guide the inside of the first pressing member 61. The second guide member 65 is arranged relative to the side of the frame 70 and is configured to guide the outside of the first pressing member 61. The first pressing member 61 is movable relative to the first guide member 64 and the second guide member 65, respectively. Furthermore, a biasing member 67, such as a spring, is provided between the first pressing member 61 and the bottom of the frame 70 to bias the first pressing member 61 in the direction opposite to the first direction Y.

[0026] Multiple second pressing members 62 are provided, for example, corresponding to each crimping portion 50, and are movably arranged relative to the mounting base 71. Each second pressing member 62 extends, for example, in a second direction X, from the rear end side of the corresponding crimping portion 50 in the second direction X to the vicinity of the corresponding first pressing member 61. The second direction X differs for each second pressing member 62 and is the direction from each first pressing member 61 toward the first workpiece M10. The rear end side of the crimping portion 50 is positioned at the tip side of the second pressing member 62 in the second direction X, and the tip side of the crimping portion 50 protrudes from the second pressing member 62.

[0027] The first pressing member 61 is provided with a first inclined surface 68 at its inner end on the front side in the first direction Y, which is inclined to intersect a plane perpendicular to the first direction Y. The second pressing member 62 is provided with a second inclined surface 69 at its upper end on the rear side in the second direction X, which is inclined to intersect a plane perpendicular to the second direction X. The first inclined surface 68 and the second inclined surface 69 are provided, for example, parallel to each other and facing each other. These first inclined surface 68 and second inclined surface 69 are for changing the pressing direction from the first direction Y to the second direction X.

[0028] The first pressing member 61 and the second pressing member 62 are, for example, in a basic state when not being pressed by the pressing means 30, in which case the first inclined surface 68 and the second inclined surface 69 are separated. Furthermore, as the first pressing member 61 is pressed by the pressing means 30 and moves in the first direction Y, the second pressing member 62 moves from a state where the first inclined surface 68 and the second inclined surface 69 are separated, as shown in Figure 3, to a state where the first inclined surface 68 comes into contact with and presses against the second inclined surface 69, thereby moving in the second direction X.

[0029] Figure 3 shows enlarged views of the first inclined surface 68 and the second inclined surface 69. Figure 3(A) shows the state where the first inclined surface 68 and the second inclined surface 69 are separated, Figure 3(B) shows the state where the first inclined surface 68 is in contact with the second inclined surface 69, and Figure 3(C) shows the state where the second inclined surface 69 is pressed by the first inclined surface 68. As a result, the crimping portion 50 does not move until the first inclined surface 68 comes into contact with the second inclined surface 69, and once the first inclined surface 68 comes into contact with and presses against the second inclined surface 69, it is configured to move in the second direction X.

[0030] The press-fit crimping device 1 operates, for example, as follows to join the first workpiece M10 and the second workpiece M20. First, as shown in Figure 4, the press-fit crimping device 1 is set to its basic state before the pressing means 30 begins pressing. The second workpiece M20 is inserted into the first recess 11 of the placement section 10 and placed there, while the first workpiece M10 is placed on top of the second workpiece M20 with the insertion section M11 corresponding thereto.

[0031] Next, when the pressing means 30 is activated to start pressing, for example, the press-fitting portion 20 is pressed via the contraction means 40 and moves in the pressing direction (first direction Y), pressing the first workpiece M10, and the press-fitting of the second workpiece M20 into the first workpiece M10 begins. At this time, the contraction means 40 does not contract because the load is below a predetermined value, and acts as a rigid body.

[0032] Furthermore, the first pressing member 61 of the interlocking means 60 is pressed by the pressing means 30 together with the press-fitting portion 20 and moves in the first direction Y, which is the pressing direction. At this time, the first inclined surface 68 of the first pressing member 61 and the second inclined surface 69 of the second pressing member 62 are separated, so the second pressing member 62 does not move and the crimping portion 50 is not pressed (see Figure 3(A)).

[0033] Next, as the pressing means 30 continues to press, the first workpiece M10 is further pressed by the press-fitting part 20, as shown in Figure 5, for example, and the second workpiece M20 is press-fitted into the first workpiece M10. Also, the first pressing member 61 moves further in the first direction Y, and the first inclined surface 68 comes into contact with the second inclined surface 69, causing the second pressing member 62 to be pressed and move in the second direction X (see Figures 3(B) and 3(C)). As a result, the crimping part 50 moves in the second direction X, and when the tip of the crimping part 50 comes into contact with the side of the first workpiece M10, the load increases further, and when the load exceeds a predetermined value, the contraction means 40 begins to contract, and the press-fitting of the second workpiece M20 into the first workpiece M10 is completed.

[0034] Furthermore, as the pressing means 30 continues to press, for example, as shown in Figure 6, the first pressing member 61 moves further in the first direction Y, and the second pressing member 62 moves further in the second direction X, pressing and crimping the first workpiece M10 with the crimping portion 50. At this time, the contraction means 40 contracts in accordance with the load because the load is above a predetermined value, and the first workpiece M10 is not subjected to a load above the predetermined value. As a result, the second workpiece M20 is press-fitted into the first workpiece M10, crimped, and joined.

[0035] As described above, according to this embodiment, the pressing means 30 presses the press-fitting portion 20 via the contraction means 40, and the crimping portion 50 is pressed via the interlocking means 60. As a result, the press-fitting portion 20 presses the first workpiece M10, allowing the second workpiece M20 to be press-fitted into the first workpiece M10, and the crimping portion 50 presses and crimps the first workpiece M10. Therefore, press-fitting and crimping can be performed without changing stages.

[0036] Furthermore, since a shrinking means 40 that shrinks when subjected to a load exceeding a predetermined value is positioned between the press-fitting portion 20 and the pressing means 30, when the crimping portion 50 is pressed and crimped by the pressing means 30, the shrinking means 40 shrinks, preventing a load exceeding a predetermined value from being applied to the first workpiece M10, and allowing the first workpiece M10 and the second workpiece M20 to be crimped without being crushed.

[0037] Furthermore, an interlocking mechanism 60 is arranged between the crimping portion 50 and the pressing means 30, which includes a first pressing member 61 that is movable in a first direction Y when pressed by the pressing means 30, and a second pressing member 62 that is movable in a second direction X different from the first direction Y when pressed by the first pressing member 61. As a result, the second pressing member 62 can move in the second direction X, applying a linear force to the first workpiece M10, and for example, it is possible to crimp horizontally. In addition, there are no restrictions on the crimping shape, and various types of crimping are possible by changing the tip shape of the crimping portion.

[0038] Furthermore, if the first pressing member 61 is provided with a first inclined surface 68 and the second pressing member 62 is provided with a second inclined surface 69, and the first inclined surface 68 and the second inclined surface 69 are parallel to each other and face each other, and as the first pressing member 61 moves in the first direction Y, the first inclined surface 68 comes into contact with and presses against the second inclined surface 69, causing the second pressing member 62 to move in the second direction X, the second pressing member 62 can be easily moved in the second direction X which is different from the first direction Y, and the first workpiece M10 can be easily crimped by applying force linearly.

[0039] The present invention has been described above with reference to embodiments, but the present invention is not limited to the above embodiments and can be modified in various ways. For example, although each component was described in detail in the above embodiments, the specific structure and shape of each component may differ, and the present invention does not have to include all of the above-mentioned components, but may include other components as well.

[0040] Furthermore, although the above embodiment specifically describes the case where the angle of change from the first direction Y to the second direction X is 90°, it can be arbitrarily set according to the required crimping shape, and for example, it may be set to 90° or less. [Explanation of Symbols]

[0041] 1…Press-fit crimping device, 10…Placement section, 11…Placement first recess, 12…Placement second recess, 13…Crimping through hole, 20…Press-fit section, 30…Pressing means, 40…Contraction means, 41…Planning member, 50…Crimping section, 60…Interlocking means, 61…First pressing member, 62…Second pressing member, 63…Connecting member, 64…First guide member, 65…Second guide member, 66…Planning member, 67…Biasing member, 68…First inclined surface, 69…Second inclined surface, 70…Frame, 71…Mounting base, M10…First workpiece, M11…Insertion section, M20…Second workpiece

Claims

1. A press-fit crimping device that joins a first workpiece and a second workpiece by press-fitting the second workpiece into the insertion portion of the first workpiece and crimping the first workpiece, A placement section for arranging the first workpiece and the second workpiece, A press-fitting section presses the first workpiece into the insertion section, A pressing means for pressing the press-fit portion, A contraction means is disposed between the press-fitting portion and the pressing means, and contracts when subjected to a load exceeding a predetermined value. A crimping section that presses and crimps the first workpiece, Interlocking means comprising: a first pressing member disposed between the crimping portion and the pressing means and movable in a first direction when pressed by the pressing means; and a second pressing member disposed and movable in a second direction different from the first direction when pressed by the first pressing member, for pressing the crimping portion. A press-fit crimping device characterized by being equipped with the following features.

2. The first pressing member is provided with a first inclined surface that is inclined to intersect a plane perpendicular to the first direction, The second pressing member is provided with a second inclined surface that is inclined to intersect with a plane perpendicular to the second direction, The first inclined surface and the second inclined surface are provided parallel to each other so as to face each other. As the first pressing member moves in the first direction, the second pressing member moves in the second direction as the first inclined surface comes into contact with and presses against the second inclined surface. The press-fit crimping device according to claim 1, characterized in that it is a press-fit crimping device.

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