Equipment for riveting and assembling screw

Abstract

The utility model discloses equipment for riveting and assembling a screw rod. The equipment comprises a base, a positioning lower die and a positioning upper die, and the positioning lower die is provided with a screw rod positioning hole; the base is provided with two guide shafts, the left end part and the right end part of the positioning upper die are respectively connected with the guide shafts on the corresponding sides in a sliding manner through linear bearings, and each guide shaft is sleeved with a first compression spring; the positioning upper die is provided with a rotating shaft positioning hole which is vertically penetrated and axially aligned with the screw rod positioning hole; an elastic jacking assembly is arranged above the positioning upper die and comprises a motor pressing head and a vertical pressing rod, the lower end of the vertical pressing rod is in sliding connection with the motor pressing head, a second compression spring is arranged between the vertical pressing rod and the motor pressing head, and the upper end of the second compression spring abuts against the vertical pressing rod; the lower end of the second compression spring abuts against the motor pressing head. By means of the structural design, the riveting assembly device can be effectively suitable for riveting assembly operation of the screw and the rotating shaft of the stepping motor, and has the advantage of being novel in structural design.

Description

Technical Field

[0001] The utility model relates to the technical field of riveting and assembling equipment, in particular to a device for screw riveting and assembling. Background Art

[0002] For a stepping motor with a screw output, during its processing, the screw and the rotating shaft of the stepping motor are connected together by a riveting and assembling method.

[0003] Among them, the Chinese utility model patent with the patent number: ZL202023089231.4 and the patent name: A riveting and pressing die for firm riveting discloses a riveting and assembling device; specifically, the riveting and pressing die for firm riveting includes a base, a lower die and an upper die from bottom to top in sequence. The lower die is fixedly connected to the base, and a rivet positioning groove is formed on the lower die; a guide post is arranged on the top of the base, a guide hole corresponding to the guide post is formed on the upper die, the guide post is slidably connected in the guide hole, a third spring is sleeved outside the guide post, one end of the third spring is fixedly connected to the base, and the other end is fixedly connected to the upper die.

[0004] It should be noted that for the above-mentioned riveting and pressing die for firm riveting, although it can realize the riveting and assembling operation, it is not applicable to the riveting and assembling of the screw and the rotating shaft of the stepping motor. Therefore, in view of the particularity of the riveting and assembling of the screw and the rotating shaft of the stepping motor, it is necessary to develop and design a targeted riveting and assembling device. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a device for screw riveting and assembling aiming at the deficiencies of the prior art. The device for screw riveting and assembling has a novel structural design and can effectively be applicable to the riveting and assembling operation of the screw and the rotating shaft of the stepping motor.

[0006] To achieve the above purpose, the utility model is realized through the following technical solutions.

[0007] A device for screw riveting and assembling includes a base, a positioning lower die installed on the base, and a positioning upper die located above the positioning lower die. The positioning lower die is provided with a screw positioning hole extending vertically and opening upward;

[0008] Two guide shafts are installed on the base, which are arranged at intervals left and right and extend vertically respectively. The left end and the right end of the positioning upper die are respectively slidably connected to the corresponding guide shafts through linear bearings. Each guide shaft is sleeved with a first compression spring. The lower ends of each first compression spring are respectively abutted against the base, and the upper ends of each first compression spring are respectively abutted against the corresponding linear bearings;

[0009] The positioning upper die is provided with a rotating shaft positioning hole vertically penetrating and axially aligned with the screw positioning hole;

[0010] An elastic pressing component is installed above the positioning upper die. The elastic pressing component includes a motor press head and a vertical pressing rod. The lower end of the vertical pressing rod is slidably connected to the motor press head, and a second compression spring is installed between the vertical pressing rod and the motor press head. The upper end of the second compression spring abuts against the vertical pressing rod, and the lower end of the second compression spring abuts against the motor press head.

[0011] Wherein, the positioning lower die includes a lower die base plate screwed and fastened to the lower surface of the base. The lower die base plate is provided with a lower die vertical rod vertically arranged upward through the base, and the screw positioning hole is opened in the core of the lower die vertical rod.

[0012] Wherein, the lower end of the vertical pressing rod is provided with a pressing rod shaft portion extending vertically downward. The core of the motor press head is provided with a pressing head center hole with an upward opening. The lower end of the pressing rod shaft portion extends into the pressing head center hole, and the second compression spring is sleeved around the pressing rod shaft portion;

[0013] The motor press head is provided with a radial oval through hole that completely penetrates radially and communicates with the pressing head center hole, and the radial oval through hole extends vertically; a pin mounting hole is opened at the lower end of the pressing rod shaft portion, and a transverse pin arranged horizontally is inserted into the pin mounting hole, and the transverse pin extends into the radial oval through hole of the motor press head.

[0014] Wherein, the upper ends of the guide shafts are respectively provided with large head portions, and the large head portions of the guide shafts are respectively located above the positioning upper die;

[0015] When the positioning upper die is in the upper limit position, the positioning upper die abuts against and is limited by the lower surfaces of the large head portions.

[0016] Compared with the prior art, the present utility model has the following beneficial effects. Specifically: during operation, the screw is positioned and placed in the screw positioning hole, the stepping motor is placed on the upper surface of the positioning upper die and the rotating shaft of the stepping motor is inserted into the rotating shaft positioning hole; after the stepping motor and the screw are positioned and placed, the elastic pressing component moves downward and pushes the stepping motor downward, and finally the rotating shaft of the stepping motor is tightly riveted with the screw. The screw riveting and assembling equipment of the present utility model can effectively be applicable to the riveting and assembling operation of the screw and the rotating shaft of the stepping motor, and has the advantage of novel structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further illustrates the present utility model by using the drawings, but the embodiments in the drawings do not constitute any limitation to the present utility model.

[0018] Figure 1 is a structural schematic diagram of the present utility model.

[0019] Figure 2 is an exploded schematic diagram of the present utility model.

[0020] In Figure 1 and Figure 2 include:

[0021] 1 - Base; 2 - Lower positioning die; 21 - Screw positioning hole; 22 - Lower die base plate; 23 - Lower die vertical rod; 3 - Upper positioning die; 31 - Rotating shaft positioning hole; 4 - Guide shaft; 41 - Large - head end; 5 - Linear bearing; 6 - First compression spring; 7 - Elastic pressing component; 71 - Motor pressing head; 711 - Pressing head center hole; 712 - Radial oblong through - hole; 72 - Vertical pressing rod; 721 - Pressing rod shaft part; 722 - Pin mounting hole; 73 - Second compression spring; 74 - Transverse pin; 8 - Stepper motor; 81 - Rotating shaft; 9 - Screw. Specific embodiments

[0022] The following combines specific embodiments to illustrate the present utility model.

[0023] Embodiment 1, as shown in Figure 1 and Figure 2 A device for screw riveting and assembling includes a base 1, a lower positioning die 2 installed on the base 1, and an upper positioning die 3 located above the lower positioning die 2. The lower positioning die 2 is provided with a screw positioning hole 21 extending vertically upward and opening upward.

[0024] Among them, as shown in Figure 1 and Figure 2 The base 1 is provided with two guide shafts 4 arranged at intervals left and right and extending vertically respectively. The left end and the right end of the upper positioning die 3 are respectively slidably connected to the corresponding guide shafts 4 through linear bearings 5. Each guide shaft 4 is sleeved with a first compression spring 6. The lower ends of each first compression spring 6 are respectively abutted against the base 1, and the upper ends of each first compression spring 6 are respectively abutted against the corresponding linear bearings 5.

[0025] Furthermore, as shown in Figure 2 The upper positioning die 3 is provided with a rotating shaft positioning hole 31 penetrating vertically and axially aligned with the screw positioning hole 21.

[0026] Even further, as shown in Figure 1 and Figure 2 Above the upper positioning die 3 is installed an elastic pressing component 7. The elastic pressing component 7 includes a motor pressing head 71 and a vertical pressing rod 72. The lower end of the vertical pressing rod 72 is slidably connected to the motor pressing head 71, and a second compression spring 73 is installed between the vertical pressing rod 72 and the motor pressing head 71. The upper end of the second compression spring 73 is abutted against the vertical pressing rod 72, and the lower end of the second compression spring 73 is abutted against the motor pressing head 71.

[0027] The equipment for screw riveting assembly in the first embodiment can be installed on a cylinder riveting press. Specifically, the base 1 is firmly installed on the working table of the cylinder riveting press, and the vertical pressure rod 72 of the elastic positioning assembly is driven by a cylinder.

[0028] When using the equipment for screw riveting assembly in the first embodiment to realize the riveting assembly operation of the screw 9 and the rotating shaft 81 of the stepping motor 8, the staff first place the screw 9 in the screw positioning hole 21 of the positioning lower die 2, and place the stepping motor 8 on the upper surface of the positioning upper die 3 and make the rotating shaft 81 of the stepping motor 8 insert into the rotating shaft positioning hole 31 of the positioning upper die 3. The rotating shaft positioning hole 31 positions the rotating shaft 81 of the stepping motor 8. Since the rotating shaft positioning hole 31 and the screw positioning hole 21 are axially aligned, at this time, the screw 9 and the rotating shaft 81 of the stepping motor 8 are axially aligned. After the stepping motor 8 and the screw 9 are positioned, the elastic pressing assembly 7 moves downward. During this process, the motor pressing head 71 of the elastic pressing assembly 7 first contacts and pushes the stepping motor 8 downward. When the elastic pressing assembly 7 moves downward and pushes the stepping motor 8 downward, the positioning upper die 3 moves downward, and finally the rotating shaft 81 of the stepping motor 8 is pressed and riveted with the screw 9 placed in the screw positioning hole 21.

[0029] It should be noted that during the process of the elastic pressing assembly 7 moving downward and driving the positioning upper die 3 to move downward, the second compression spring 73 is compressed, and the elastic pressing assembly 7 makes the rotating shaft 81 of the stepping motor 8 and the screw 9 be elastically pressed and riveted to ensure the quality of the riveting assembly.

[0030] After the rotating shaft 81 of the stepping motor 8 and the screw 9 are riveted, after the elastic pressing assembly 7 moves upward and resets, the reset elastic force of the first compression spring 6 causes the positioning upper die 3 to move upward and reset. During this process, the screw 9 riveted to the rotating shaft 81 of the stepping motor 8 retreats from the screw positioning hole 21 of the positioning lower die 2.

[0031] Based on the above situation, through the above structural design, the equipment for screw riveting assembly in the first embodiment can be effectively applied to the riveting assembly operation of the screw 9 and the rotating shaft 81 of the stepping motor 8, and has the advantage of novel structural design.

[0032] Embodiment 2, as Figure 1 and Figure 2 shown, the difference between the second embodiment and the first embodiment is that the positioning lower die 2 includes a lower die base plate 22 screwed and fastened to the lower surface of the base 1. The lower die base plate 22 is provided with a lower die vertical rod 23 that passes upward through the base 1 and is vertically arranged, and the screw positioning hole 21 is opened in the core of the lower die vertical rod 23.

[0033] Embodiment 3, as Figure 1 and Figure 2As shown in the figure, the difference between the third embodiment and the first embodiment is that: a press rod shaft portion 721 extending vertically downward is provided at the lower end of the vertical press rod 72, a press head central hole 711 with an upward opening is formed in the core of the motor press head 71, the lower end of the press rod shaft portion 721 extends into the press head central hole 711, and the second compression spring 73 is sleeved around the press rod shaft portion 721.

[0034] Among them, the motor press head 71 is provided with a radial oblong through hole 712 that completely penetrates radially and communicates with the press head central hole 711, and the radial oblong through hole 712 extends vertically; a pin mounting hole 722 is formed at the lower end of the press rod shaft portion 721, and a horizontally arranged horizontal pin 74 is inserted into the pin mounting hole 722, and the horizontal pin 74 extends into the radial oblong through hole 712 of the motor press head 71.

[0035] Since the horizontal pin 74 extends into the radial oblong through hole 712 of the motor press head 71, when the elastic pressing assembly 7 pushes the stepping motor 8 and the positioning upper die 3 downward, the vertical press rod 72 drives the horizontal pin 74 to move along the radial oblong through hole 712, and both ends of the radial oblong through hole 712 can limit the vertical press rod 72, and can also avoid the problem of slippage between the vertical press rod 72 and the motor press head 71.

[0036] Embodiment Four, as Figure 1 and Figure 2 shown in the figure, the difference between the fourth embodiment and the first embodiment is that: large head end portions 41 are respectively provided at the upper ends of the guide shafts 4, and the large head end portions 41 of the guide shafts 4 are respectively located above the positioning upper die 3; when the positioning upper die 3 is in the upper limit position, the positioning upper die 3 abuts against and is limited by the lower surfaces of the large head end portions 41.

[0037] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. An equipment for screw riveting assembly, comprising a base (1), a positioning lower die (2) installed on the base (1), and a positioning upper die (3) located above the positioning lower die (2). The positioning lower die (2) is provided with a screw positioning hole (21) extending vertically and opening upward. The base (1) is installed with two guide shafts (4) arranged at intervals left and right and extending vertically respectively. The left end and the right end of the positioning upper die (3) are respectively slidably connected to the corresponding guide shafts (4) through linear bearings (5). Each guide shaft (4) is sleeved with a first compression spring (6). The lower ends of each first compression spring (6) are respectively abutted against the base (1), and the upper ends of each first compression spring (6) are respectively abutted against the corresponding linear bearings (5). It is characterized in that: The positioning upper die (3) is provided with a rotating shaft positioning hole (31) vertically penetrating and axially aligned with the screw positioning hole (21). An elastic pressing component (7) is installed above the positioning upper die (3). The elastic pressing component (7) includes a motor press head (71) and a vertical pressing rod (72). The lower end of the vertical pressing rod (72) is slidably connected to the motor press head (71), and a second compression spring (73) is installed between the vertical pressing rod (72) and the motor press head (71). The upper end of the second compression spring (73) is abutted against the vertical pressing rod (72), and the lower end of the second compression spring (73) is abutted against the motor press head (71).

2. The equipment for screw riveting and assembling according to claim 1, characterized in that: The positioning lower die (2) includes a lower die base plate (22) screwed and fastened to the lower surface of the base (1). The lower die base plate (22) is provided with a lower die vertical rod (23) vertically arranged and passing through the base (1) upward. The screw positioning hole (21) is opened at the core of the lower die vertical rod (23).

3. An apparatus for screw riveting and assembling according to claim 1, characterized in that: The lower end of the vertical pressing rod (72) is provided with a pressing rod shaft part (721) extending vertically downward. The core of the motor press head (71) is provided with a pressing head center hole (711) opening upward. The lower end of the pressing rod shaft part (721) extends into the pressing head center hole (711), and the second compression spring (73) is sleeved on the periphery of the pressing rod shaft part (721). The motor press head (71) is provided with a radial long circular through hole (712) radially penetrating completely and communicating with the pressing head center hole (711). The radial long circular through hole (712) extends vertically. The lower end of the pressing rod shaft part (721) is provided with a pin mounting hole (722). A transverse pin (74) arranged horizontally is inserted into the pin mounting hole (722), and the transverse pin (74) extends into the radial long circular through hole (712) of the motor press head (71).

4. An apparatus for screw riveting and assembling, according to claim 1, characterized in that: The upper ends of each guide shaft (4) are respectively provided with large head ends (41), and the large head ends (41) of each guide shaft (4) are respectively located above the positioning upper die (3). When the positioning upper die (3) is in the upper limit position, the positioning upper die (3) abuts against and is limited by the lower surfaces of the large head ends (41).

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