Automatic assembling machine for screws and gaskets

Abstract

The invention relates to the technical field of screw gasket assembling, and particularly discloses an automatic screw gasket assembling machine which is characterized in that a plurality of pushing pieces are arranged on a base body in the circumferential direction of the base body in a sliding mode at intervals, sliding ways in one-to-one correspondence with the pushing pieces are formed in the base body in the circumferential direction of the base body, and limiting blocks are arranged in the sliding ways in the radial direction of the base body in a sliding mode; the base frame is provided with an upper guide rail used for driving the pushing part to move up and down and a lower guide plate matched with a screw, an annular plate is arranged on the base body and located below the sliding way, a notch coaxial with the sliding way is formed in the annular plate, and the limiting assembly comprises two clamping plates rotationally connected with the base body and a driving part sliding in the radial direction of the base body. A guide disc fixedly connected with the base frame is coaxially arranged in the base body, when the base body rotates, the guide disc can drive the driving part to move so that the two clamping plates can clamp or break away from clamping a gasket, and a discharging plate used for pulling the screws away from the sliding way is arranged on the base frame and located below the base body.

Description

Technical Field

[0001] The invention relates to the technical field of screw washer assembly, and in particular to an automatic screw washer assembly machine. Background Art

[0002] In industrial manufacturing, the anti-slip and anti-loosening measures during screw assembly generally adopt additional gaskets, such as spring washers, plastic washers, and rubber washers. The existing screw and rubber gasket assembly methods include manual assembly and automatic assembly. The manual assembly method is not only inefficient, but also labor-intensive and costly, and cannot meet the development needs of the future manufacturing industry.

[0003] A Chinese patent with announcement number CN113695899B discloses an automatic assembly device and method for screw gaskets, the device including a screw dividing track, a gasket dividing track, a first driving mechanism and a transplanting mechanism, the gasket dividing track is used to convey the gaskets in the gasket vibration plate and discharge the gaskets through the outlet of the gasket dividing track, a positioning mechanism is provided near the outlet of the gasket dividing track to receive and position the gaskets, the screw dividing track is used to convey the screws in the screw vibration plate and discharge the screws through the outlet of the screw dividing track, a first detection device is provided near the outlet of the screw dividing track, and the first driving mechanism is provided near the outlet of the screw dividing track.

[0004] In the above technical solution, when the first detection device senses the screw at the outlet of the screw dividing track, it controls the first driving mechanism to push the screw to the assembly position, and then controls the fourth driving mechanism and the fifth driving mechanism to drive the transplanting mechanism to move and grasp the gasket located at the positioning mechanism position through the clamp and put the gasket on the screw located at the assembly position. However, in this process, in order to achieve continuous production, the reciprocating motion of the fourth driving mechanism, the fifth driving mechanism and the transplanting mechanism is required, which is not conducive to efficient production. Summary of the invention

[0005] The invention provides a screw washer automatic assembly machine, aiming to solve the problem in the related art that it is difficult to assemble washers and screws efficiently and accurately.

[0006] A screw gasket automatic assembly machine comprises a vibration plate 1 and a vibration plate 2 arranged on a base frame, a base body is rotatably arranged on the base frame, a plurality of push pieces are slidably arranged on the base body along its circumferential direction, a slideway corresponding to the push pieces is opened on the base body along its circumference, the vibration plate 1 is used to convey screws into the slideway, a limit block is provided in the slideway along the radial sliding direction of the base body, an upper guide rail for driving the push pieces to move up and down and a lower guide plate cooperating with the screws are provided on the base frame, a ring plate is provided on the base body below the slideway, a notch coaxial with the slideway is opened on the ring plate, and the vibration plate 2 is used to convey screws to the position corresponding to the notch at the upper end of the ring plate The gasket is provided with a limit assembly corresponding to the notch one by one and used for positioning the gasket on the base along its circumference, the limit assembly includes two clamping plates rotatably connected to the base and a driving member sliding radially along the base, a guide plate fixedly connected to the base frame is coaxially provided in the base, when the base rotates, the guide plate can drive the driving member to move so that the two clamping plates can clamp or detach the gasket, and a blanking plate for removing the screw from the slide is provided on the base frame below the base; by controlling the rotation of the base, the screw can move downward along the slide and accurately dock with the gasket, so that the gasket and the screw can be assembled efficiently and accurately.

[0007] Preferably, the base is columnar, the limit block is connected to the base through an elastic member, and the end of the limit block facing the outside of the base has an inclined portion and a limit portion. The setting of the limit portion is conducive to ensuring that the screw moves downward along the slide and accurately docks with the gasket.

[0008] Preferably, the two clamps are connected by elastic member 2, and the driving member is connected to the base by elastic member 3. The driving member has an upper plate and a guide rod. The upper plate is located between the two clamps and abuts against the two clamps. The guide rod extends radially along the base and abuts against the outer periphery of the guide plate. The cooperation between the guide rod and the guide plate enables the clamp to clamp the gasket.

[0009] Preferably, one end of the clamping plate close to the outer side of the base has an arc-shaped portion for clamping the gasket. The arrangement of the arc-shaped portion facilitates the screw and the gasket to maintain a coaxial state, thereby facilitating smooth assembly.

[0010] Preferably, the outer periphery of the guide plate has arc surface one, arc surface two, arc surface three and arc surface four connected in sequence end to end, the radii of arc surface one and arc surface three are consistent, the radii of arc surface two and arc surface four are consistent, and the radius of arc surface one is greater than that of arc surface two.

[0011] Preferably, when the driving member abuts against arc surface one and arc surface three, the two clamps are in a state of being released from clamping the gasket, and when the driving member abuts against arc surface two and arc surface four, the two clamps are in a state of clamping the gasket.

[0012] Preferably, the notch radius is smaller than the gasket, the slideway radius is larger than the notch, and the maximum radius of the screw head is consistent with the slideway radius.

[0013] Preferably, the lower end of the pushing member has a push rod, which is coaxial with the slideway. When the push rod pushes the screw downward along the slideway, when the screw portion of the screw contacts the limiting portion, the screw portion of the screw can remain coaxial with the slideway.

[0014] Preferably, the upper guide rail includes an upper plate and a lower plate, a guide groove is formed between the upper plate and the lower plate, the guide groove has a horizontal portion, a descending portion and an ascending portion, a guide wheel which cooperates with the guide groove is rotatably provided at the upper end of the push member, the lower guide plate is coaxial with the base, and the lower guide plate has guide surface one and guide surface two which cooperate with the head of the screw, the lower guide plate can limit the screw to the slide, and the setting of the lower guide plate facilitates the screw to move smoothly downward along the slide.

[0015] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: during the rotation of the base, when the gasket enters the position corresponding to the notch at the upper end of the ring plate, as the base rotates, the driving member gradually disengages from the arc surface three and stops against the arc surface four, so that the two clamping plates can clamp the gasket under the action of the elastic member two, so that the gasket and the notch are coaxial, and as the base continues to rotate, the push rod begins to push the screw to move downward along the slideway. During this process, when the screw portion of the screw contacts the limiting portion, the screw portion of the screw can maintain a coaxial state with the slideway, so that the screw can move vertically downward. The screw is inserted into the hole of the gasket, and then the head of the screw can stop against the inclined part of the limit block, so that the limit block is retracted into the base, so that the screw can smoothly pass over the limit block downward; as the base continues to rotate, when the pushing member moves to the connection between the descending part and the ascending part, the lower guide plate disengages from the limit on the screw, and then the pushing member moves upward and disengages from the pushing of the screw, the driving member gradually disengages from the arc surface four and stops against the arc surface one, the two clamping plates can disengage from clamping the gasket, and then the screw stops against the blanking plate, so that the assembled screw and gasket fall off the slide. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the first viewing angle of the present invention.

[0017] Figure 2 It is a schematic diagram of a second viewing angle of the present invention.

[0018] Figure 3 It is a schematic diagram of the third viewing angle of the present invention.

[0019] Figure 4 It is a schematic diagram of the cooperation of the base, the upper guide rail and the lower guide plate of the present invention.

[0020] Figure 5 It is an exploded view of the guide plate, upper guide rail and lower guide plate of the present invention along the vertical direction.

[0021] Figure 6 It is a schematic diagram of the cooperation of the base, the push piece and the screw of the present invention.

[0022] Figure 7 It is a cross-sectional view of the base and the guide plate of the present invention.

[0023] Figure 8 for Figure 7 Enlarged view of point A in the middle.

[0024] Fig. 9 It is a cross-sectional view of the substrate of the present invention.

[0025] Fig.10 It is a schematic diagram of the cooperation between the clamping plate and the driving member of the present invention.

[0026] Fig.11 It is a schematic structural diagram of the limit block of the present invention.

[0027] Figure numerals: 10, base frame; 111, upper plate; 112, lower plate; 113, horizontal part; 114, descending part; 115, ascending part; 12, lower guide plate; 121, guide surface one; 122, guide surface two; 13, limit block; 131, elastic member one; 132, inclined part; 133, limit part; 14, guide plate; 141, arc surface one; 142, arc surface two; 143, arc surface three; 144, arc surface four; 15, motor; 16, blanking plate; 17, lower Hopper; 20, base; 201, slide; 202, slideway; 21, slide; 22, ring plate; 221, notch; 30, vibration plate one; 31, material distribution track one; 40, vibration plate two; 41, material distribution track two; 50, push member; 51, push rod; 52, guide wheel; 61, clamping plate; 611, arc-shaped portion; 62, driving member; 621, upper plate; 622, guide rod; 623, lower plate; 63, elastic member two; 64, elastic member three; 80, screw; 90, gasket. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0029] like Figure 1-Figure 8 as well as Fig.11As shown, a screw gasket automatic assembly machine includes a vibration plate 1 30 and a vibration plate 2 40 arranged on a base frame 10, a base 20 is rotatably arranged on the base frame 10, the base 20 is columnar, a motor 15 for driving the base 20 to rotate is installed on the base frame 10, a plurality of push members 50 are slidably arranged at intervals along the circumference of the base 20, a slide groove 201 for sliding the push members 50 is opened along the outer periphery of the base 20 in the vertical direction, and a slide groove 201 corresponding to the push members 50 is opened along the circumference of the base 20. The slideway 202 is located below the slide groove 201. A limit block 13 is provided in the slideway 202 for radial sliding along the base 20. The limit block 13 is connected to the base 20 through an elastic member 131. The elastic member 131 is specifically a first spring. The end of the limit block 13 facing the outside of the base 20 has an inclined portion 132 and a limit portion 133. The limit portion 133 is arc-shaped and cooperates with the outer periphery of the screw portion of the screw 80. In the initial state, the limit portion 133 is in a coaxial state with the slideway 202.

[0030] The base frame 10 is fixed with an upper guide rail for driving the push member 50 to move up and down and a lower guide plate 12 that cooperates with the screw 80. The upper guide rail includes an upper plate 111 and a lower plate 112. A guide groove is formed between the upper plate 111 and the lower plate 112. Along the rotation direction of the base 20, the guide groove has a horizontal portion 113, a descending portion 114 and an ascending portion 115. The upper end of the push member 50 is rotatably provided with a guide wheel 52 that cooperates with the guide groove. The lower end of the push member 50 is provided with a push rod 51, and the push rod 51 is coaxial with the slideway 202; the lower guide plate 12 is coaxially arranged with the base 20, and the upper end of the lower guide plate 12 has a head that cooperates with the screw 80. The guide surface 121 and the guide surface 2 122, the guide surface 121 is horizontally arranged and corresponds to the horizontal part 113, the guide surface 2 122 corresponds to the descending part 114, the end of the distribution track 31 on the vibration disk 30 is located on the outer peripheral side of the base 20 and close to the lower guide plate 12, after the screw 80 enters the slideway 202 from the end of the distribution track 31, as the base 20 rotates, the screw 80 enters the inner ring side of the lower guide plate 12 along the corresponding slideway 202, at this time, the lower guide plate 12 can limit the screw 80 to the slideway 202, and the lower end surface of the head of the screw 80 stops against the upper end surface of the lower guide plate 12.

[0031] like Figure 4-Figure 10As shown, a ring plate 22 is fixedly provided on the base 20 below the slide 202, and a notch 221 coaxial with the slide 202 is provided on the ring plate 22, the radius of the notch 221 is smaller than the gasket 90, the radius of the slide 202 is larger than the notch 221, the maximum radius of the head of the screw 80 is consistent with the radius of the slide 202, the end of the distribution track 241 on the vibration plate 240 is located on the outer peripheral side of the ring plate 22, and the gasket 90 can be transported to the position corresponding to the notch 221 at the upper end of the ring plate 22 through the end of the distribution track 241, and a limiting component corresponding to the notch 221 and used for positioning the gasket 90 is provided on the base 20 along its circumference, and the limiting component includes two clamping plates 61 rotatably connected to the base 20 and a driving member 62 radially sliding along the base 20, and a guide plate 14 is coaxially provided in the base 20, and the top of the guide plate 14 The end is fixedly connected to the base frame 10, and the two clamping plates 61 are arranged crosswise. The end of the clamping plate 61 close to the outer side of the base 20 has an arc-shaped portion 611 for clamping the gasket 90. The two clamping plates 61 are connected by an elastic member 2 63, and the elastic member 2 63 is specifically a second spring. A slide 21 is fixedly provided in the base 20. The driving member 62 has an upper plate 621, a guide rod 622 and a lower plate 623. The lower plate 623 is slidably connected to the slide 21 through an elastic member 3 64, and the elastic member 3 64 is specifically a third spring. The upper plate 621 is located between the two clamping plates 61 and stops against the two clamping plates 61. The guide rod 622 extends radially along the base 20 and stops against the outer periphery of the guide plate 14. When the base 20 rotates, the guide rod 622 can stop against the outer periphery of the guide plate 14, so that the two clamping plates 61 can clamp and disengage the gasket 90.

[0032] It should be noted that the outer periphery of the guide plate 14 has an arc surface 141, an arc surface 2 142, an arc surface 3 143 and an arc surface 4 144 connected in sequence from head to tail, the end of the material distribution track 2 41 on the vibration plate 2 40 corresponds to the arc surface 3 143, and the end of the material distribution track 2 41 is located below the guide surface 121, the guide surface 2 122 corresponds to the arc surface 4 144, and the radius of the arc surface 141 and the arc surface 3 143 are consistent. The radius of the arc surface 2 142 and the arc surface 4 144 are consistent, the radius of the arc surface 1 141 is larger than the arc surface 2 142, when the driving member 62 stops against the arc surface 1 141 and the arc surface 3 143, the two clamps 61 are in a state of being detached from the gasket 90, when the driving member 62 stops against the arc surface 2 142 and the arc surface 4 144, the two clamps 61 are in a state of clamping the gasket 90, and at this time the gasket 90 is coaxial with the notch 221.

[0033] A blanking plate 16 for removing the screws 80 from the slide 202 is provided on the base frame 10 below the base 20. The blanking plate 16 corresponds to the rising portion 115. Along the rotation direction of the base 20, the distance between the outer edge of the blanking plate 16 and the axis of the base 20 gradually increases to facilitate the assembled screws 80 and gaskets 90 to fall off from the slide 202. A blanking hopper 17 for unloading the assembled screws 80 and gaskets 90 is fixedly provided on the base frame 10 below the blanking plate 16.

[0034] Specific working principle: Reference Figure 1-Figure 11 The rotation direction of the base 20 is clockwise (looking from top to bottom along the axial direction of the base 20). During the rotation of the base 20, the vibration plate 1 30 is controlled to convey the screw 80 into the slideway 202, and the vibration plate 2 40 is controlled to convey the gasket 90 to the position corresponding to the notch 221 at the upper end of the ring plate 22. Taking one of the gaskets 90 and the corresponding screw 80 as an example, when the gasket 90 enters the position corresponding to the notch 221 at the upper end of the ring plate 22 from the end of the material distribution track 2 41, as the base 20 rotates, the driving member 62 gradually disengages from the arc surface 3 143 and stops at the arc surface 4 144, so that the two clamping plates 61 can be elastically Under the action of part 2 63, the gasket 90 is clamped so that the gasket 90 is coaxial with the notch 221. As the base 20 continues to rotate, the push rod 51 begins to push the screw 80 to move downward along the slide 202. During this process, when the screw portion of the screw 80 contacts the limiting portion 133, the screw portion of the screw 80 can remain coaxial with the slide 202, so that the screw 80 can be vertically inserted downward into the hole of the gasket 90, and then the head of the screw 80 can stop against the inclined portion 132 of the limiting block 13, so that the limiting block 13 shrinks into the base 20, so that the screw 80 can smoothly pass over the limiting block 13 downward.

[0035] As the base 20 continues to rotate, when the pushing member 50 moves to the connection between the descending portion 114 and the ascending portion 115, the lower guide plate 12 disengages from the limiting position of the screw 80, and then the pushing member 50 moves upward and disengages from the pushing of the screw 80, the driving member 62 gradually disengages from the arc surface four 144 and stops with the arc surface one 141, the two clamping plates 61 are able to disengage from clamping the gasket 90, and then the screw 80 stops with the discharge plate 16, so that the assembled screw 80 and gasket 90 fall off the slide 202 and enter the discharge hopper 17.

[0036] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A screw washer automatic assembly machine, comprising a vibration plate 1 and a vibration plate 2 arranged on a base frame, characterized in that: The cam is provided with a plurality of guide rails which are arranged on the frame and are used for guiding the guide rails in the upward and downward directions of the push rails, and a plurality of guide rails are provided on the frame and are used for guiding the guide rails in the upward and downward directions of the push rails.

2. The screw and washer automatic assembly machine according to claim 1, characterized in that: The base is columnar, the limiting block is connected to the base through an elastic member 1, and one end of the limiting block facing the outer side of the base is provided with an inclined portion and a limiting portion.

3. The screw and washer automatic assembly machine according to claim 1, characterized in that: The two clamps are connected by elastic member 2, and the driving member is connected to the base by elastic member 3. The driving member has an upper plate and a guide rod. The upper plate is located between the two clamps and abuts against the two clamps. The guide rod extends radially along the base and abuts against the outer periphery of the guide plate.

4. The screw and washer automatic assembly machine according to claim 3, characterized in that: One end of the clamping plate close to the outer side of the base body has an arc-shaped portion for clamping the gasket.

5. The screw and washer automatic assembly machine according to claim 1, characterized in that: The outer periphery of the guide plate comprises arc surface one, arc surface two, arc surface three and arc surface four which are connected in sequence end to end, the radius of arc surface one is consistent with that of arc surface three, the radius of arc surface two is consistent with that of arc surface four, and the radius of arc surface one is greater than that of arc surface two.

6. The automatic screw and washer assembly machine according to claim 5, characterized in that: When the driving member abuts against the arc surface one and the arc surface three, the two clamps are in a state of being free from clamping the gasket; when the driving member abuts against the arc surface two and the arc surface four, the two clamps are in a state of clamping the gasket.

7. The automatic screw and washer assembly machine according to claim 1, characterized in that: The notch radius is smaller than the gasket, the slideway radius is larger than the notch, and the maximum radius of the screw head is consistent with the slideway radius.

8. The screw and washer automatic assembly machine according to claim 2, characterized in that: The lower end of the pushing member is provided with a push rod, which is coaxial with the slideway. When the push rod pushes the screw downward along the slideway, when the screw rod portion of the screw contacts the limiting portion, the screw rod portion of the screw can maintain a coaxial state with the slideway.

9. The screw and washer automatic assembly machine according to claim 1, characterized in that: The upper guide rail includes an upper plate and a lower plate, a guide groove is formed between the upper plate and the lower plate, the guide groove has a horizontal portion, a descending portion and an ascending portion, a guide wheel which cooperates with the guide groove is rotatably provided at the upper end of the push member, the lower guide plate is coaxial with the base, and has guide surface one and guide surface two which cooperate with the head of the screw, and the lower guide plate can limit the screw to the slideway.

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