Pressure head and automatic steel ball riveting press

Abstract

A pressing head and an automatic steel ball riveting press are used for pressing a steel ball into a steel ball hole in a part and comprise a pressing head body, a connecting piece, a distributing head and a feeding head. A first riveting hole is formed in the connecting piece, a first feeding hole is formed in the connecting piece, and the first feeding hole is communicated with the first riveting hole. A second riveting hole is formed in the material distributing head, and the second riveting hole is communicated with the first riveting hole at the lower end of the first riveting hole. The feeding head is fixed to the connecting piece, a third feeding hole is formed in the feeding head, one end of the third feeding hole forms an opening in the surface of the feeding head, and the other end of the third feeding hole is used for being connected with feeding equipment. A second feeding hole is formed in the distributing head and located between the first feeding hole and the third feeding hole, when the distributing head is located at the lowest point relative to the connecting piece, one end of the second feeding hole is connected with the other end of the first feeding hole, and when the distributing head is located at the highest point relative to the connecting piece, the other end of the second feeding hole is connected with the other end of the third feeding hole. And the other end of the second feeding hole is connected with one end of the third feeding hole.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of press equipment, especially a pressing head and automatic riveting press for steel balls. BACKGROUND

[0002] When the shell of the vehicle hydraulic control unit of the intelligent network connected automobile is assembled, a steel ball is riveted and pressed in the machining through hole of the shell for sealing. In order to improve the riveting and pressing efficiency, a feeding pipeline is usually provided to provide the steel ball into the pressing head to realize automatic feeding and improve the riveting and pressing efficiency. However, when the feeding pipeline provides the steel ball into the pressing head, due to the inconsistency between the feeding speed and the riveting and pressing frequency, the problem of blank riveting and pressing (i.e. riveting and pressing without steel ball) often occurs due to the untimely feeding. The problem of jamming often occurs when the pressing needle is pressed down and encounters the steel ball being fed. Therefore, there is an urgent need for a pressing head and automatic riveting press for steel balls, which can ensure the consistency between the feeding frequency and the riveting and pressing frequency, and avoid the problem of jamming. SUMMARY

[0003] In view of the above problems of the prior art, the present application provides a pressing head and automatic riveting press for steel balls, which can ensure the consistency between the feeding frequency and the riveting and pressing frequency, and avoid the problem of jamming.

[0004] The first aspect of the application provides a pressure head for pressing a steel ball into a steel ball hole on a part, comprising: a pressure head body, a pressure pin vertically downwardly arranged on the pressure head body; a connecting piece, the connecting piece is arranged below the pressure head body and is in sliding connection with the pressure head body in the vertical direction; the connecting piece is vertically provided with a first riveting hole at the corresponding position of the pressure pin, the lower end of the pressure pin extends into the first riveting hole; the connecting piece is provided with a first feeding hole, the first feeding hole is inclined relative to the vertical direction, so that one end of the first feeding hole is lower than the other end, and the first feeding hole is in communication with the first riveting hole, the other end of the first feeding hole is higher and forms an opening on the surface of the connecting piece; a distribution head, the distribution head is in sliding connection with the connecting piece in the vertical direction; the distribution head is vertically provided with a second riveting hole at the corresponding position of the pressure pin, the second riveting hole is in communication with the first riveting hole at the lower end of the first riveting hole; the distribution head is provided with a second feeding hole, the second feeding hole is inclined relative to the vertical direction, so that one end of the second feeding hole is lower than the other end; a feeding head, the feeding head is fixed on the connecting piece, the feeding head is provided with a third feeding hole, one end of the third feeding hole forms an opening on the surface of the feeding head, and the other end is used for connecting with a feeding device; wherein the first feeding hole, the second feeding hole and the third feeding hole are straight line type circular holes, the axes of the first feeding hole, the second feeding hole and the third feeding hole are located on the same vertical plane, the third feeding hole is located above the first feeding hole, and the second feeding hole is located between the first feeding hole and the third feeding hole; when the distribution head slides to the lowest point relative to the connecting piece, one end of the second feeding hole is in communication with the other end of the first feeding hole; when the distribution head slides to the highest point relative to the connecting piece, the other end of the second feeding hole is in communication with one end of the third feeding hole.

[0005] When the pressure head moves downward from the initial state and continues to move downward after abutting against the part, the distribution head is driven to move toward the connecting piece. When the distribution head is at the highest point relative to the connecting piece, the other end of the second feeding hole is in communication with one end of the third feeding hole, and the steel ball in the third feeding hole rolls into the second feeding hole. When the pressure head moves upward after completing riveting, the connecting piece moves upward with the pressure head, and the distribution head moves downward relative to the connecting piece. When the distribution head moves to the lowest point, one end of the second feeding hole is in communication with the other end of the first feeding hole, and the steel ball in the second feeding hole rolls into the first feeding hole and then into the first riveting hole, so that the steel ball is riveted in the steel ball hole of the part when the pressure head performs the next riveting operation. Thus, the pressure head can simultaneously complete the process of making the steel ball in the second feeding hole enter the first riveting hole through the first feeding hole and the process of making the steel ball in the third feeding hole enter the second feeding hole in one riveting operation. Thus, the feeding frequency can be kept consistent with the riveting frequency, and the situation that there is no steel ball or multiple steel balls under the pressure needle when the pressure head performs riveting can be avoided.

[0006] In addition, when the distribution head is at the lowest point relative to the connecting piece, one end of the second feeding hole is connected to the other end of the first feeding hole. That is, one end of the second feeding hole is connected to the other end of the first feeding hole only when the pressure head returns to the initial position after completing riveting. Thus, the steel ball in the second feeding hole can enter the first riveting hole through the first feeding hole only when the pressure needle rises to the initial position. Thus, the steel ball can enter the first riveting hole before the pressure needle moves downward for the next riveting, and thus the situation that the steel ball does not reach the predetermined position when the pressure needle moves downward can be avoided, thereby avoiding the jamming accident. Thus, the efficiency of the pressure head in performing riveting can be improved, and the stability and reliability of the automatic feeding and riveting of the pressure head can be improved.

[0007] As a possible implementation form of the first aspect, the distribution head comprises: a distribution pressure head arranged below the connecting piece, the second riveting hole being arranged in the distribution pressure head; and a distribution plate fixedly connected with the distribution pressure head and located between the connecting piece and the feeding head, the two side surfaces of the distribution plate being respectively attached to the connecting piece and the feeding head, the second feeding hole being arranged on the distribution plate, and the two ends of the second feeding hole being respectively located on the two side surfaces of the distribution plate.

[0008] As described above, by arranging the two ends of the second feeding hole on the two side surfaces of the distribution plate attached to the connecting piece and the feeding head, the second feeding hole can be conveniently connected to the first feeding hole and the third feeding hole when the distribution plate slides up and down relative to the connecting piece and the feeding head.

[0009] As a possible implementation form of the first aspect, the length of the second feeding hole is arranged to be able to accommodate only one steel ball.

[0010] Therefore, by allowing the second feeding hole to only accommodate one steel ball, only one steel ball is allowed to enter the second feeding hole from the third feeding hole when the second feeding hole is communicated with the third feeding hole. Furthermore, only one steel ball is allowed to enter the first feeding hole and the first riveting hole from the second feeding hole when the second feeding hole is communicated with the first feeding hole, that is, only one steel ball is allowed to pass through each time, preventing multiple steel balls from entering the first riveting hole at the same time. Thus, the error of riveting multiple steel balls at one time when the pressing head is performing riveting operation can be avoided, thereby improving the stability and reliability of the pressing head.

[0011] As a possible implementation manner of the first aspect, the material clamping and pushing head further comprises a material clamping and pushing block, which is arranged in the material clamping and pushing head and hinged to the material clamping and pushing head, one end of the material clamping and pushing block extends into the first riveting hole or the second riveting hole and can be rotated downward to move out of the first riveting hole or the second riveting hole, and a first elastic member, which drives the one end of the material clamping and pushing block to rotate upward into the first riveting hole or the second riveting hole.

[0012] Therefore, by arranging the material clamping and pushing block in the material clamping and pushing head and driving the one end of the material clamping and pushing block to rotate upward into the first riveting hole or the second riveting hole by the first elastic member, when the pressing needle returns to the initial position and the steel ball falls downward into the first riveting hole from the second feeding hole and the first feeding hole, the material clamping and pushing block can clamp the steel ball in the first riveting hole or the second riveting hole. Thus, when the pressing head performs the next riveting operation, the pressing needle can push the steel ball to move downward, and then push the one end of the material clamping and pushing block extending into the first riveting hole or the second riveting hole to rotate downward, so that the pressing needle pushes the steel ball into the steel ball hole on the part to complete the riveting operation.

[0013] As a possible implementation manner of the first aspect, the material clamping and pushing head further comprises a sensor, which is arranged at a corresponding position of the material clamping and pushing block and detects whether the steel ball abuts against the top of the one end of the material clamping and pushing block when the one end of the material clamping and pushing block extends into the second riveting hole.

[0014] Therefore, by arranging the sensor to detect whether the steel ball abuts against the top of the one end of the material clamping and pushing block, the pressing head can be prevented from performing the riveting operation when the feeding is unsuccessful. Thus, the stability and reliability of the automatic feeding and riveting of the pressing head can be improved.

[0015] As a possible implementation manner of the first aspect, the material clamping and pushing head further comprises a second elastic member, which is arranged between the material clamping and pushing head and the connecting member and drives the material clamping and pushing head to separate from the connecting member.

[0016] Therefore, the second elastic member is arranged between the distribution pressure head and the connecting piece, so that when the pressure head is moved upward to complete riveting, the distribution pressure head is driven to separate from the connecting piece, and the distribution pressure head is at the lowest position relative to the connecting piece, so that the second feeding hole is communicated with the first feeding hole, thereby ensuring smooth feeding. Therefore, the stability and reliability of the automatic feeding of the pressure head can be improved.

[0017] As a possible implementation manner of the first aspect, the pressure head body further comprises a first driving cylinder, the first driving cylinder has a driving rod vertically downwardly extending, and the driving rod is fixedly connected with the connecting piece.

[0018] Therefore, the connecting piece can be driven to separate from the pressure head body by the first driving cylinder, so that the demolding force is provided for the separation between the pressure needle and the part after riveting is completed. Therefore, the riveting operation process of the pressure head can be more smooth, and the stability of the riveting operation of the pressure head can be improved.

[0019] As a possible implementation manner of the first aspect, two first driving cylinders are arranged on both sides of the pressure needle.

[0020] Therefore, by arranging one first driving cylinder on each side of the pressure needle, the demolding force can be provided on both sides of the pressure needle by the two first driving cylinders. Therefore, the demolding force received by the pressure needle and the part when they are separated can be more uniform. Therefore, the riveting operation process of the pressure head can be more smooth, and the stability of the riveting operation of the pressure head can be improved.

[0021] As a possible implementation manner of the first aspect, the first driving cylinder is a pneumatic cylinder.

[0022] Therefore, by using the pneumatic cylinder as the first driving cylinder, when the pressure head is moved downward to perform riveting operation, the pressure head body can be more easily moved downward relative to the connecting piece by compressing the air in the pneumatic cylinder, so that the pressure needle is moved downward in the first riveting hole and the second riveting hole to push the steel ball to perform riveting. When the first driving cylinder is required to provide the demolding force, sufficient demolding force can be obtained by the pneumatic cylinder to ensure that the pressure needle and the part can be smoothly separated.

[0023] The second aspect of the application provides a steel ball automatic riveting machine, comprising: a pressure head, the pressure head is any one of the pressure heads in the first aspect of the application; and a second driving cylinder, the second driving cylinder drives the pressure head to move in the vertical direction.

[0024] From the above, when the pressure head is driven by the second driving cylinder to move downward from the initial state and abuts against the part, the pressure head continues to move downward, which drives the distribution head to move toward the connecting piece. When the distribution head is at the highest point relative to the connecting piece, the other end of the second feeding hole is connected with one end of the third feeding hole, and the steel ball in the third feeding hole rolls into the second feeding hole. When the pressure head moves upward after completing riveting, the connecting piece moves upward with the pressure head, and the distribution head moves downward relative to the connecting piece. When the distribution head moves to the lowest point, one end of the second feeding hole is connected with the other end of the first feeding hole, and the steel ball in the second feeding hole rolls into the first feeding hole and then into the first riveting hole, so that the steel ball is riveted in the steel ball hole of the part when the pressure head performs the next riveting operation. Thus, the pressure head can simultaneously complete the process of making the steel ball in the second feeding hole enter the first riveting hole through the first feeding hole and the process of making the steel ball in the third feeding hole enter the second feeding hole in one riveting operation. Thus, the feeding frequency can be kept consistent with the riveting frequency, and the situation that there is no steel ball or multiple steel balls under the pressure needle when the pressure head performs the riveting operation can be avoided.

[0025] In addition, when the distribution head is at the lowest point relative to the connecting piece, one end of the second feeding hole is connected with the other end of the first feeding hole. That is, one end of the second feeding hole is connected with the other end of the first feeding hole in the process that the pressure head returns to the initial position after completing riveting. Thus, the steel ball in the second feeding hole can enter the first riveting hole through the first feeding hole in the process that the pressure needle rises to the initial position. Thus, the steel ball can enter the first riveting hole before the pressure needle moves downward to perform the next riveting, and thus the situation that the steel ball does not reach the predetermined position when the pressure needle moves downward can be avoided, so that the riveting accident can be avoided. Thus, the efficiency of the pressure head in performing the riveting operation can be improved, and the stability and reliability of the automatic feeding and riveting of the pressure head can be improved.

[0026] These and other aspects of the present application will become more fully understood from the following (multiple) embodiment description. BRIEF DESCRIPTION OF DRAWINGS

[0027] The various features of the present application and the relationships between the various features will be further clarified by the following description of the embodiments with reference to the drawings. The drawings are merely examples, some features are not shown in actual proportions, and some features in the drawings can omit the features that are conventional in the field to which the present application pertains and are not essential to the present application, or additional features that are not essential to the present application can be shown. The combination of the various features shown in the drawings is not intended to limit the present application. In addition, the same reference signs in the entire specification refer to the same contents. The specific drawings are as follows:

[0028] Figure 1 is a schematic view of the three-dimensional structure of the pressure head in the present application;

[0029] Figure 2 isFigure 1 Schematic view of the middle position of the medium pressure head in the front-rear direction;

[0030] Figure 3 For Figure 1 Schematic view of the middle position of the medium pressure head in the left-right direction when the medium pressure head is in the initial state;

[0031] Figure 4 For Figure 1 Schematic view of the middle position of the medium pressure head in the left-right direction when the medium pressure head is in the depressed state;

[0032] Figure 5 For Figure 4 Schematic view of the middle position of the medium pressure head in the front-rear direction.

[0033] Explanation of reference signs

[0034] 10 pressure head; 20 steel ball; 100 pressure head body; 110 body part; 120 pressure needle; 130 first driving cylinder; 131 driving rod; 200 connecting piece; 210 first riveting hole; 220 first feeding hole; 230 detection hole; 300 distribution head; 310 distribution pressure head; 311 second riveting hole; 320 distribution plate; 321 second feeding hole; 330 clamping material shifting block; 350 sensor; 351 transmitting end; 352 receiving end; 360 second elastic piece; 400 feeding head; 410 third feeding hole. DETAILED DESCRIPTION

[0035] The words "first", "second", "third" or similar in the specification and claims or module A, module B, module C and the like similar terms are only used to distinguish similar objects and do not represent a specific order of the objects. It can be understood that the specific order or sequence can be interchanged as permitted, so that the application described herein can be implemented in an order other than that illustrated or described herein.

[0036] The term "comprising" as used in the specification and claims should not be interpreted as limiting to the elements listed thereafter; it does not exclude other elements. It should therefore be interpreted as specifying the presence of the stated features, integers, or components as referred to, but does not preclude the presence or addition of one or more other features, integers, components, or groups thereof. Thus, the expression "a device comprising means A and B" should not be limited to a device consisting only of components A and B.

[0037] References in this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in at least one embodiment of the present invention. Therefore, the phrases "in one embodiment" or "in an embodiment" appearing throughout this specification do not necessarily refer to the same embodiment, but may do so. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner, as would be apparent to one of ordinary skill in the art from this disclosure.

[0038] Below, with reference to the accompanying drawings, possible embodiments of the pressure head 10 in the present application are exemplarily described.

[0039] like Figures 1-5 As shown, the present application provides a pressing head 10 for pressing a steel ball 20 into a steel ball 20 hole on a part, comprising: a pressing head body 100, a connecting piece 200, a dividing head 300 and a feeding head 400. Among them, a pressing needle 120 is vertically arranged on the pressing head body 100. The connecting piece 200 is arranged below the pressing head body 100 and is slidably connected to the pressing head body 100 in the vertical direction. The connecting piece 200 is vertically provided with a first riveting hole 210 at a position corresponding to the pressing needle 120, and the lower end of the pressing head 10 extends into the first riveting hole 210. A first feeding hole 220 is provided in the connecting piece 200, and the first feeding hole 220 is inclined relative to the vertical direction, so that one end of the first feeding hole 220 is lower and connected to the first riveting hole 210, and the other end of the first feeding hole 220 is higher, forming an opening on the surface of the connecting piece 200. The dividing head 300 is slidably connected to the connecting piece 200 in the vertical direction. The distributor head 300 is vertically provided with a second rivet hole 311 at the corresponding position of the pressure needle 120, and the second rivet hole 311 is connected to the first rivet hole 210 at the lower end of the first rivet hole 210. The distributor head 300 is provided with a second feeding hole 321, which is inclined relative to the vertical direction so that one end thereof is lower than the other end. The feeding head 400 is fixed on the connecting member 200, and a third feeding hole 410 is provided in the feeding head 400. One end of the third feeding hole 410 forms an opening on the surface of the feeding head 400, and the other end is used to connect with the feeding equipment. Among them, the third feeding hole 410 is located above the first feeding hole 220, and the second feeding hole 321 is located between the first feeding hole 220 and the third feeding hole 410. When the distributor head 300 slides to the lowest point relative to the connecting member 200, one end of the second feeding hole 321 is connected to the other end of the first feeding hole 220. When the distributing head 300 slides to the highest point relative to the connecting member 200 , the other end of the second loading hole 321 is communicated with one end of the third loading hole 410 .

[0040] As shown above, when the ram 10 moves downward from its initial state and contacts the part and then continues to move downward, it drives the feed head 300 to move toward the connector 200. When the feed head 300 is at its highest point relative to the connector 200, the other end of the second loading hole 321 is connected to one end of the third loading hole 410, and the steel ball 20 in the third loading hole 410 rolls into the second loading hole 321. When the ram 10 completes riveting and moves upward, the connector 200 moves upward with the ram 10, and the feed head 300 moves downward relative to the connector 200. When it moves to its lowest point, one end of the second loading hole 321 is connected to the other end of the first loading hole 220, and the steel ball 20 in the second loading hole 321 rolls into the first loading hole 220 and rolls into the first riveting hole 210 along the first loading hole 220, so that when the ram 10 performs the next riveting operation, the steel ball 20 is riveted into the steel ball 20 hole of the part. Thus, during one riveting operation, the press head 10 can simultaneously complete the process of causing the steel ball 20 in the second feeding hole 321 to enter the first riveting hole 210 through the first feeding hole 220, and the process of causing the steel ball 20 in the third feeding hole 410 to enter the second feeding hole 321. Thus, the feeding frequency and the riveting frequency can be kept consistent, avoiding the situation where there is no steel ball 20 or multiple steel balls 20 under the pressing needle 120 during the riveting operation of the press head 10.

[0041] In addition, since the material distributor 300 is at its lowest point relative to the connector 200, one end of the second loading hole 321 is connected to the other end of the first loading hole 220. That is, only when the pressure head 10 completes the riveting and returns to its initial position will one end of the second loading hole 321 be connected to the other end of the first loading hole 220. Thus, the steel ball 20 in the second loading hole 321 can enter the first riveting hole 210 through the first loading hole 220 only when the pressure needle 120 rises and returns to its initial position. Thus, the steel ball 20 can enter the first riveting hole 210 before the pressure needle 120 moves downward for the next riveting, thereby avoiding the steel ball 20 failing to reach the predetermined position when the pressure needle 120 moves downward, thereby preventing the material from being stuck. Thus, the efficiency of the riveting operation of the pressure head 10 can be improved, and the stability and reliability of the automatic riveting of the pressure head 10 can be improved.

[0042] In some embodiments, as Figures 2-5 As shown, the pressing needle 120 is cylindrical, and the diameter of the pressing needle 120 is slightly larger than the diameter of the steel ball 20. Therefore, after the steel ball 20 is pressed into the steel ball 20 hole on the part, the opening position of the steel ball 20 hole is riveted to fix the steel ball 20 in the steel ball 20 hole.

[0043] In some embodiments, as Figures 2-5As shown, the diameters of the first riveting hole 210 and the second riveting hole 311 are matched with the diameter of the pressing needle 120, so that the stability of the pressing needle 120 during the riveting operation can be improved.

[0044] In some embodiments, as shown in Figure 3 、 Figure 4 As shown, the axial centers of the first feeding hole 220, the second feeding hole 321 and the third feeding hole 410 are located in the same vertical plane, the first feeding hole 220, the second feeding hole 321 and the third feeding hole 410 are inclined straight linear holes, the first feeding hole 220, the second feeding hole 321 and the third feeding hole 410 are lower as they are closer to the first riveting hole 210, and the diameters of the first feeding hole 220, the second feeding hole 321 and the third feeding hole 410 are matched with the diameter of the steel ball 20. In this way, the smooth rolling of the steel ball 20 towards the first riveting hole 210 through the first feeding hole 220, the second feeding hole 321 and the third feeding hole 410 can be ensured.

[0045] In some embodiments, the first feeding hole 220, the second feeding hole 321 and the third feeding hole 410 can also be arc-shaped holes, spiral downward extending holes or other forms of holes that can allow the steel ball 20 to pass under the action of gravity, which is not limited.

[0046] In some embodiments, as shown in Figure 1 、 Figure 3 、 Figure 4 As shown, the distribution head 300 includes a distribution pressing head 310 and a distribution plate 320, the distribution pressing head 310 is arranged below the connecting piece 200, and the second riveting hole 311 is arranged in the distribution pressing head 310. The distribution plate 320 is fixedly connected with the distribution pressing head 310 and located between the connecting piece 200 and the feeding head 400, the two side surfaces of the distribution plate 320 are respectively attached to the connecting piece 200 and the feeding head 400, the second feeding hole 321 is arranged on the distribution plate 320, and the two ends of the second feeding hole 321 are respectively located on the two side surfaces of the distribution plate 320. In this way, by arranging the two ends of the second feeding hole 321 on the two side surfaces of the distribution plate 320 which are attached to the connecting piece 200 and the feeding head 400, the connection between the second feeding hole 321 and the first feeding hole 220 and the third feeding hole 410 can be facilitated when the distribution plate 320 slides up and down relative to the connecting piece 200 and the feeding head 400.

[0047] In some embodiments, as shown in Figure 3 、 Figure 4As shown, the length of the second feeding hole 321 is set to only accommodate one steel ball 20. Thus, when the second feeding hole 321 is communicated with the third feeding hole 410, only one steel ball 20 is allowed to enter the second feeding hole 321 from the third feeding hole 410. Further, when the second feeding hole 321 is communicated with the first feeding hole 220, only one steel ball 20 is allowed to enter the first feeding hole 220 and the first riveting hole 210 from the second feeding hole 321, i.e., only one steel ball 20 is allowed to pass through each time, preventing multiple steel balls 20 from entering the first riveting hole 210 at the same time. Thus, it can be avoided that multiple steel balls 20 are riveted at one time when the press head 10 performs riveting operation, thereby improving the stability and reliability of the press head 10.

[0048] In some embodiments, as shown in Figure 2 、 Figure 5 The material blocking push block 330 is arranged in the material distribution head 300 and hinged with the material distribution head 310, one end of the material blocking push block 330 extends into the first riveting hole 210 or the second riveting hole 311 and can be turned downward to move out of the first riveting hole 210 or the second riveting hole 311. The first elastic member drives the one end of the material blocking push block 330 to turn upward into the first riveting hole 210 or the second riveting hole 311. As described above, by arranging the material blocking push block 330 in the material distribution head 310 and driving the one end of the material blocking push block 330 to turn upward into the first riveting hole 210 or the second riveting hole 311 by the first elastic member, when the press needle 120 returns to the initial position upward and the steel ball 20 falls downward into the first riveting hole 210 from the second feeding hole 321 and the first feeding hole 220, the material blocking push block 330 can block the steel ball 20 in the first riveting hole 210 or the second riveting hole 311. Thus, when the press head 10 performs the next riveting operation, the press needle 120 can push the steel ball 20 downward, further push the one end of the material blocking push block 330 extending into the first riveting hole 210 or the second riveting hole 311 to turn downward, so that the press needle 120 pushes the steel ball 20 into the steel ball hole on the part to complete the riveting operation.

[0049] In some embodiments, the first elastic member is a torsion spring, one end of the first elastic member abuts against the material distribution head 310 and the other end abuts against the material blocking push block 330.

[0050] In some embodiments, as shown in Figure 3 、 Figure 4As shown, the material distributing head 300 further comprises a sensor 350 arranged at a corresponding position of the material blocking block 330, which detects whether the upper side of the one end of the material blocking block 330 abuts against the steel ball 20 when the one end of the material blocking block 330 extends into the second riveting hole 311. Thus, by arranging the sensor 350 to detect whether the upper side of the one end of the material blocking block 330 abuts against the steel ball 20, the riveting operation of the pressing head 10 can be avoided when the feeding is not successful. Thus, the stability and reliability of the automatic feeding riveting operation of the pressing head 10 can be improved.

[0051] In some embodiments, the sensor 350 is an infrared sensor 350, a light barrier switch, a fiber sensing switch or other devices capable of detecting the steel ball 20, which is not limited.

[0052] In some embodiments, as shown in Figure 3 As shown, the material distributing head 300 further comprises a second elastic member 360 arranged between the material distributing head 310 and the connecting member 200, which drives the material distributing head 310 and the connecting member 200 to separate. Thus, by arranging the second elastic member 360 between the material distributing head 310 and the connecting member 200, the material distributing head 310 and the connecting member 200 can be driven to separate when the pressing head 10 moves upward after completing the riveting operation, so that the material distributing head 310 is at the lowest position relative to the connecting member 200, and the second feeding hole 321 is communicated with the first feeding hole 220, thereby ensuring the smooth feeding. Thus, the stability and reliability of the automatic feeding of the pressing head 10 can be improved.

[0053] In some embodiments, as shown in Figure 3 As shown, the second elastic member 360 is a spring, and two second elastic members 360 are symmetrically arranged at both sides of the first riveting hole 210. Thus, the pushing force received by the material distributing head 300 when separating from the connecting member 200 can be more uniform, thereby improving the stability of the riveting operation of the pressing head 10.

[0054] In some embodiments, as shown in Figure 1 , Figure 2 As shown, the pressing head body 100 further comprises a first driving cylinder 130 having a driving rod 131 extending vertically downward, and the driving rod 131 is fixedly connected with the connecting member 200. Thus, the connecting member 200 and the pressing head body 100 can be driven to separate by the first driving cylinder 130, thereby providing the demolding force for the separation between the pressing needle 120 and the part after completing the riveting operation. Thus, the riveting operation process of the pressing head 10 can be smoother, thereby improving the stability of the riveting operation of the pressing head 10.

[0055] In some embodiments, as shown in Figure 1 , Figure 2As shown, two first drive cylinders 130 are provided, one on each side of the press pin 120. Thus, by providing a first drive cylinder 130 on each side of the press pin 120, the two first drive cylinders 130 can provide demolding force on both sides of the press pin 120. This ensures a more uniform demolding force when the press pin 120 is separated from the part. This makes the riveting operation of the press head 10 smoother, thereby improving the stability of the riveting operation of the press head 10.

[0056] In some embodiments, the first drive cylinder 130 is a pneumatic cylinder. Thus, by using a pneumatic cylinder as the first drive cylinder 130, when the ram 10 moves downward for riveting, the compressed air within the cylinder can more easily move the ram body 100 downward relative to the connector 200, thereby causing the pressing pin 120 to move downward within the first and second riveting holes 210 and 311, pushing the steel ball 20 for riveting. Furthermore, when the first drive cylinder 130 is required to provide a demolding force, the pneumatic cylinder can provide sufficient demolding force to ensure smooth separation between the pressing pin 120 and the part.

[0057] The above description provides an exemplary description of possible embodiments of the ram 10 in this application. This application also provides a steel ball automatic riveting machine, comprising a ram 10 and a second drive cylinder. The ram 10 may be any of the possible implementations of the ram 10 described above, which will not be described in detail here. The second drive cylinder may be an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder, which can drive the ram 10 to move vertically up and down, causing the ram 10 to perform riveting operations.

[0058] Below, in conjunction with the accompanying drawings, the specific structure of the pressure head 10 in this application is described in detail in a specific embodiment.

[0059] Figure 1 Schematic diagram of the three-dimensional structure of the pressure head 10 in this application; Figure 2 for Figure 1 A schematic cross-sectional view of the middle position of the medium pressure head 10 in the front-to-back direction; Figure 3 for Figure 1 A partial cross-sectional schematic diagram of the middle position of the pressure head 10 in the left-right direction when the middle pressure head 10 is in the initial state; Figure 4 for Figure 1 A partial cross-sectional schematic diagram of the middle position of the pressure head 10 in the left-right direction when the middle pressure head 10 is in a downward pressure state; Figure 5 for Figure 4 A schematic partial cross-sectional view of the middle position of the medium pressure head 10 in the front-to-back direction.

[0060] like Figures 1-5As shown, the pressing head 10 in the present application comprises a pressing head body 100, a connecting piece 200, a distributing head 300 and a feeding head 400. The pressing head body 100 is in transmission connection with the second driving cylinder of the automatic riveting machine for steel balls, and can move up and down along the vertical direction under the driving of the second driving cylinder. The connecting piece 200 is arranged below the pressing head body 100 and is in sliding connection with the pressing head body 100 along the vertical direction. The distributing head 300 is arranged on the connecting piece 200 and is in sliding connection with the connecting piece 200 along the vertical direction. The feeding head 400 is arranged on the connecting piece 200 and is connected with the storage pipeline of the steel balls 20, and is used for providing the steel balls 20 to the pressing head 10.

[0061] As shown in the pressing head body 100, Figure 1 、 Figure 2 The pressing head body 100 comprises a body part 110, a pressing needle 120 and a first driving cylinder 130 arranged on the body part 110. The body part 110 is in transmission connection with the second driving cylinder, and the middle position of the body part 110 vertically downwardly extends the cylindrical pressing needle 120, and the lower end of the pressing needle 120 extends into the first riveting hole 210. The first driving cylinder 130 is provided with two, and is symmetrically arranged at the left and right positions of the pressing needle 120. The first driving cylinder 130 has a driving rod 131 vertically downwardly extending, and the lower end of the driving rod 131 is fixedly connected with the connecting piece 200. The first driving cylinder 130 is a gas cylinder, and when the pressing head 10 performs riveting operation, the air in the cylinder can be compressed to more easily move the body part 110 of the pressing head body 100 downward relative to the connecting piece 200, so as to be close to the connecting piece 200. When it is needed to separate the body part 110 of the pressing head body 100 from the connecting piece 200, the first driving cylinder 130 can provide enough force for separation.

[0062] As shown in the connecting piece 200, Figures 1-4 The connecting piece 200 is a block-shaped part, and the left and right ends of the connecting piece 200 are respectively fixedly connected with the driving rods 131 of the two first driving cylinders 130, and the middle position of the connecting piece 200 is provided with the first riveting hole 210. The first riveting hole 210 is a vertical circular through hole, the diameter of the first riveting hole 210 is matched with the diameter of the pressing needle 120, and the pressing needle 120 can extend into the first riveting hole 210 from the upper end of the first riveting hole 210.

[0063] As shown in the connecting piece 200, Figures 1-5As shown, the material distribution head 300 includes a material distribution ram 310 and a material distribution plate 320. The material distribution ram 310 is a columnar component arranged below the connecting member 200 and connected with the connecting member 200 in a vertical direction. Specifically, the lower surface of the connecting member 200 protrudes downward at the corresponding position of the first riveting hole 210, and the upper end of the material distribution ram 310 extends into the material distribution ram 310. The material distribution ram 310 is vertically provided with a second riveting hole 311 arranged at the corresponding position of the first riveting hole 210. The second riveting hole 311 is a vertically arranged circular through hole, and the diameter of the second riveting hole 311 is matched with the diameter of the pressing needle 120. After the pressing needle 120 passes through the first riveting hole 210, the upper end of the second riveting hole 311 extends into the second riveting hole 311. The material distribution plate 320 is a rectangular plate component fixedly arranged on the front side surface of the material distribution ram 310. The material distribution plate 320 vertically extends upward and extends to the front side of the connecting member 200, and is attached to the front side surface of the connecting member 200.

[0064] As shown in Figure 1 , Figure 3 , Figure 4 The feeding head 400 is a square block component. The feeding head 400 is fixedly arranged on the front side surface of the connecting member 200 and located in front of the material distribution plate 320, and is attached to the front side surface of the material distribution plate 320. That is, the front and rear side surfaces of the material distribution plate 320 are respectively attached to the front side surface of the connecting member 200 and the rear side surface of the feeding head 400, and the front and rear side surfaces of the material distribution plate 320 slide up and down respectively on the front side surface of the connecting member 200 and the rear side surface of the feeding head 400 when the material distribution plate 320 slides up and down with the material distribution ram 310.

[0065] As shown in Figure 3 , Figure 4 The connecting member 200 is provided with a first feeding hole 220, the material distribution plate 320 is provided with a second feeding hole 321, and the feeding head 400 is provided with a third feeding hole 410. The axis of the first feeding hole 220, the second feeding hole 321 and the third feeding hole 410 extends in a plane along the front-rear and up-down directions at the position of the axis of the first riveting hole 210. The first feeding hole 220, the second feeding hole 321 and the third feeding hole 410 are inclined straight line type circular holes, and the closer to the first riveting hole 210, the lower the first feeding hole 220, the second feeding hole 321 and the third feeding hole 410 are. The diameter of the first feeding hole 220, the second feeding hole 321 and the third feeding hole 410 is matched with the diameter of the steel ball 20. Thus, the steel ball 20 can smoothly roll toward the first riveting hole 210 through the first feeding hole 220, the second feeding hole 321 and the third feeding hole 410.

[0066] As shown in Figure 3As shown, when the material distribution head 310 is at its lowest point relative to the connector 200, the axis of the second loading hole 321 coincides with the axis of the first loading hole 220, and the second loading hole 321 is connected to the first loading hole 220. The axis of the second loading hole 321 is offset from the axis of the third loading hole 410, and the second loading hole 321 is offset from the third loading hole 410. At this time, the steel ball 20 in the second loading hole 321 can roll into the first loading hole 220 under the action of gravity, and the first loading hole 220 can roll into the first rivet hole 210, while the steel ball 20 in the third loading hole 410 cannot enter the second loading hole 321.

[0067] like Figure 4 As shown, when the material distribution head 310 is at its highest point relative to the connecting member 200, the axis of the second loading hole 321 coincides with the axis of the third loading hole 410, and the second loading hole 321 is connected to the third loading hole 410. The axis of the second loading hole 321 is offset from the axis of the first loading hole 220, and the second loading hole 321 is offset from the first loading hole 220. At this time, the steel ball 20 in the third loading hole 410 can roll into the second loading hole 321 under the action of gravity, and the steel ball 20 is prevented from rolling from the second loading hole 321 into the first loading hole 220.

[0068] like Figure 4 As shown, the length of the second loading hole 321 is set to accommodate only one steel ball 20. Therefore, when the second loading hole 321 is connected to the third loading hole 410, only one steel ball 20 is allowed to enter the second loading hole 321 through the third loading hole 410. Furthermore, when the second loading hole 321 is connected to the first loading hole 220, only one steel ball 20 is allowed to enter the first loading hole 220 and the first riveting hole 210 through the second loading hole 321. That is, only one steel ball 20 is allowed to pass through each time loading is performed, preventing multiple steel balls 20 from entering the first riveting hole 210 at the same time.

[0069] like Figure 2 、 Figure 5As shown, the material dividing head 300 also includes a material block 330 and a first elastic member. The material block 330 is arranged in the material dividing head 310 and is hinged to the material dividing head 310. One end of the material block 330 extends into the first riveting hole 210 and can be rotated downward to be moved out of the first riveting hole 210. Specifically, the material block 330 is located near the upper end of the material dividing head 310, and is located on the left and right sides of the lower end of the first riveting hole 210. The middle size of the material block 330 is large so that the material block 330 is hinged to the material dividing head 310. The sizes of the two ends of the material block 330 are small so that one end of the material block 330 can extend into the first riveting hole 210 while reducing the volume of the material block 330. The first elastic member is a torsion spring, one end of which abuts against the material dividing press head 310, and the other end abuts against the material clamping block 330. The first elastic member drives one end of the material clamping block 330 to rotate upward and extend into the first riveting hole 210, thereby preventing the steel ball 20 from passing through. At the same time, when the end of the material clamping block 330 extending into the first riveting hole 210 is subjected to sufficient downward force, it can rotate downward and move out of the first riveting hole 210, thereby allowing the steel ball 20 to pass through.

[0070] like Figure 3 、 Figure 4 It can be seen that the material dividing head 300 also includes a sensor 350, which is arranged at a corresponding position of the material clamping block 330. Specifically, the sensor 350 is arranged above the material clamping block 330 and near the material clamping block 330. The sensor 350 is a fiber optic induction switch, and the transmitting end 351 of the sensor 350 is fixed on the material dividing plate 320, emitting a light beam toward the axial position of the first riveting hole 210. When the material dividing head 300 is at the lowest point relative to the connector 200, the portion of the lower surface of the connector 200 protruding downward at the position of the first riveting hole 210 is provided with a through-hole-shaped detection hole 230 at a corresponding position of the transmitting end 351 of the sensor 350, and the detection hole 230 is perpendicular to the first riveting hole 210. The receiving end 352 of the sensor 350 is fixed on the protruding portion of the lower surface of the connector, located at the other end of the detection hole 230, so as to receive the light beam emitted by the transmitting end 351. When the material-distributing head 300 is at its lowest point relative to the connector 200, the transmitting end 351 of the sensor 350 is aligned with the detection hole 230. The light beam emitted by the transmitting end 351 passes through the detection hole 230 and can be received by the receiving end 352. When the steel ball 20 lands on the material-dispensing block 330, the steel ball 20 blocks the light beam, preventing the receiving end 352 from receiving the light beam. This allows the determination that the steel ball 20 has reached the predetermined position on the material-dispensing block 330 to be made. Thus, the sensor 350 can detect the steel ball 20 and, therefore, determine whether the steel ball 20 is present in the first riveting hole 210 during the riveting operation of the ram 10.

[0071] like Figure 3As shown, the material distributing head 300 further comprises a second elastic member 360, which is a spring, arranged between the material distributing head 310 and the connecting member 200, one end of which is in abutment with the connecting member 200, and the other end of which is in abutment with the material distributing head 310, for driving the material distributing head 310 to separate from the connecting member 200. The second elastic member 360 is provided with two, which are symmetrically arranged at the front and rear positions of the lower end of the first riveting hole 210. In this way, not only can the material distributing head 310 and the connecting member 200 have sufficient elastic force, so that the material distributing head 300 and the connecting member 200 can slide in the direction of separation in time when the head 10 rises, but also the thrust received by the material distributing head 300 when separating from the connecting member 200 is more uniform, thereby improving the stability of the head 10 during riveting operation.

[0072] In summary, in combination with the above-mentioned content, Figures 1-5 As shown, when the head 10 is used for riveting operation, there is a steel ball 20 in the last riveting operation in the last material distributing hole 321 of the material distributing head 330 when the head 10 is in the initial position. At this time, there is no steel ball 20 in the first material distributing hole 220 and the second material distributing hole 321, and a plurality of steel balls 20 are stored in the third material distributing hole 410. When the sensor 350 detects the steel ball 20 on the material distributing head 330, the automatic riveting machine determines that the head 10 can be driven for riveting.

[0073] When the second driving cylinder drives the head 10 to move downward for riveting, as the head 10 descends, the lower end of the material distributing head 310 abuts against the part, and the second riveting hole 311 is in abutment with the steel ball hole on the part. When the head 10 needs to be driven to descend, the material distributing head 310 will compress the second elastic member 360, so as to move upward relative to the connecting member 200, so that the material distributing plate 320 slides upward relative to the connecting member 200 and the material distributing head 400. When the material distributing head 310 abuts against the connecting member 200, and the material distributing head 300 is at the highest point relative to the connecting member 200, the axis of the second material distributing hole 321 coincides with the axis of the third material distributing hole 410, and one steel ball 20 in the third material distributing hole rolls into the second material distributing hole 321 under the action of gravity.

[0074] When the second driving cylinder driving head 10 continues to move downward, the driving rod 131 of the first driving cylinder 130 will gradually compress the air in the first driving cylinder 130 and retract into the first driving cylinder 130, so that the main body 110 of the head body 100 and the pressing needle 120 move downward relative to the connecting piece 200 and the material distributing head 310, that is, the pressing needle 120 moves downward in the first riveting hole 210. When the pressing needle 120 abuts against the steel ball 20 on the material blocking block 330, the pressing needle 120 will push the steel ball 20 to move downward, forcing the end of the material blocking block 330 extending into the first riveting hole 210 to rotate downward, so that the steel ball 20 passes through and falls into the steel ball hole of the part under the guidance of the second riveting hole 311. Subsequently, the second driving cylinder driving head 10 is riveted downward at the opening position of the steel ball hole, deforming the opening position of the steel ball hole, so as to complete riveting.

[0075] After riveting is completed, the second driving cylinder driving head 10 moves upward, and at the same time, the first driving cylinder 130 drives the driving rod 131 to extend out, so that the main body 110 of the head body 100 is separated from the connecting piece 200, and the lower end of the pressing needle 120 moves upward relative to the lower end of the material distributing head 310. Thus, the pressing needle 120 can be forced to separate from the part, thereby achieving demolding.

[0076] After demolding, the second driving cylinder driving head 10 continues to move upward. When the connecting piece 200 moves upward with the head body 100, the material distributing head 310 is separated from the connecting piece 200 under the driving of the second elastic member 360. When the material distributing head 310 is at the lowest point relative to the connecting piece 200, the axis of the second feeding hole 321 coincides with the axis of the first feeding hole 220, and the steel ball 20 in the second feeding hole 321 rolls into the first feeding hole 220 under the action of gravity, and then rolls into the first riveting hole 210 through the first feeding hole 220 and falls on the material blocking block 330, so that the head 10 performs the next riveting operation. Finally, the second driving cylinder driving head 10 continues to move upward to the initial position, and when the sensor 350 detects that there is a steel ball 20 on the material blocking block 330, the next riveting operation is performed.

[0077] It should be noted that the above is only a preferred embodiment of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and more other equivalent embodiments can be included without departing from the concept of the present application, and all belong to the protection scope of the present application.

Claims

1. A pressure head, characterized in that: Used to press steel balls into steel ball holes on parts, including: A pressure head body, on which a pressure needle is vertically arranged downward; A connecting piece is provided below the pressing head body and is slidably connected to the pressing head body in a vertical direction; the connecting piece is vertically provided with a first rivet pressing hole at a position corresponding to the pressing pin, and the lower end of the pressing pin extends into the first rivet pressing hole; a first feeding hole is provided in the connecting piece, and the first feeding hole is inclined relative to the vertical direction, so that one end of the first feeding hole is lower and communicates with the first rivet pressing hole, and the other end of the first feeding hole is higher, forming an opening on the surface of the connecting piece; A material distribution head is slidably connected to the connecting member in a vertical direction; the material distribution head is vertically provided with a second riveting hole at a position corresponding to the pressing pin, and the second riveting hole is connected to the first riveting hole at a lower end of the first riveting hole; the material distribution head is provided with a second feeding hole, and the second feeding hole is inclined relative to the vertical direction so that one end thereof is lower than the other end; A feeding head, the feeding head is fixed on the connecting member, a third feeding hole is provided in the feeding head, one end of the third feeding hole forms an opening on the surface of the feeding head, and the other end is used to connect with the feeding equipment; Wherein, the first loading hole, the second loading hole and the third loading hole are linear circular holes, the axes of the first loading hole, the second loading hole and the third loading hole are located on the same vertical plane, the third loading hole is located above the first loading hole, and the second loading hole is located between the first loading hole and the third loading hole; when the distribution head slides to the lowest point relative to the connecting member, one end of the second loading hole is connected to the other end of the first loading hole; when the distribution head slides to the highest point relative to the connecting member, the other end of the second loading hole is connected to one end of the third loading hole.

2. The pressure head according to claim 1, characterized in that The distributing head comprises: a material dividing press head, the material dividing press head being arranged below the connecting piece, and the second riveting hole being arranged in the material dividing press head; The dividing plate is fixedly connected to the dividing pressure head and is located between the connecting piece and the loading head. The two side surfaces of the dividing plate are respectively in contact with the connecting piece and the loading head. The second loading hole is arranged on the dividing plate, and the two ends of the second loading hole are respectively located on the two side surfaces of the dividing plate.

3. The pressure head according to claim 2, characterized in that The length of the second feeding hole is set to accommodate only one steel ball.

4. The pressure head according to claim 2, characterized in that The distributing head also includes: A material clamping and shifting block is provided in the material dividing press head and is hinged to the material dividing press head. One end of the material clamping and shifting block extends into the first riveting hole or the second riveting hole and can be rotated downward to be moved out of the first riveting hole or the second riveting hole. A first elastic member drives one end of the clamping and shifting block to rotate upward into the first riveting hole or the second riveting hole.

5. The pressure head according to claim 4, characterized in that The distributing head also includes: A sensor is provided at a corresponding position of the clamping block, and detects whether the steel ball is in contact with the upper portion of the one end of the clamping block when the one end of the clamping block extends into the second riveting hole.

6. The pressure head according to any one of claims 2 to 5, characterized in that The distributing head also includes: A second elastic member is provided between the material distribution pressure head and the connecting member, and drives the material distribution pressure head to separate from the connecting member.

7. The pressure head according to claim 2, characterized in that The pressure head body also includes: A first driving cylinder is provided with a driving rod extending vertically downward, and the driving rod is fixedly connected to the connecting member.

8. The pressure head according to claim 7, characterized in that There are two first driving cylinders, which are respectively located on both sides of the pressing needle.

9. The pressure head according to claim 7 or 8, characterized in that The first driving cylinder is a pneumatic cylinder.

10. An automatic steel ball riveting machine, characterized in that: include: A pressure head, wherein the pressure head is the pressure head according to any one of claims 1 to 9; A second driving cylinder drives the pressure head to move in a vertical direction.

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