Discharging mechanism for nut tapping

Abstract

The utility model discloses a discharging mechanism for nut tapping. The discharging mechanism comprises a first mounting part, a second mounting part, two limiting plates, a baffle assembly, a stop lever assembly and a driving part. When the thickness of the nut is changed, the fixing position of the second mounting part on the first mounting part is longitudinally adjusted; and when the width of the nut is changed, the fixing positions of the two limiting plates on the second mounting part are transversely adjusted. The channel can be suitable for nuts of different sizes within a certain range. The size of the nut is changed, the mounting block vertically adjusts the fixed position, the stop lever corresponds again, and the second plane cam can be connected with the rotating shaft. The adjusting device has the beneficial effects that the adjusting device can be suitable for nuts with different sizes within a certain range and is fast and convenient to adjust and operate.

Description

Technical Field

[0001] This utility model relates to a nut tapping machine, and in particular to a feeding mechanism for nut tapping. Background Technology

[0002] A typical nut tapping feeding mechanism includes: a channel for the nut to enter, a baffle, and a stop bar. The baffle blocks the channel and supports the bottom nut, allowing them to stack vertically within the channel. The stacked nuts are labeled from bottom to top as: Nut 1, Nut 2, Nut 3, and so on. The stop bar is used to insert into the channel and into the center hole of Nut 2. Two synchronously rotating planar cams control the movement of the baffle and the stop bar respectively.

[0003] Tapping: The baffle blocks the channel, and the stop rod is inserted into the center hole of nut No. 2. The stop rod is tangent to the lower inner wall of the center hole, that is, the stop rod presses downward against the center hole. The baffle and the stop rod limit the position of nut No. 1, and the tapping machine taps nut No. 1.

[0004] Material feeding: The stop bar is inserted into the center hole of nut No. 2. The baffle switches from blocking the channel to not blocking the channel. Nut No. 1, which has been tapped, falls out of the channel. The baffle then switches back to blocking the channel.

[0005] Feeding: The baffle keeps blocking the channel, and the stop bar switches from inserting into the channel to not inserting into the channel. All nuts in the channel move downward until nut No. 2 touches the baffle. Accordingly, nut No. 2 becomes the new nut No. 1, and nut No. 3 becomes the new nut No. 2. The stop bar then switches back to inserting into the channel, that is, inserting into the center hole of the new nut No. 2, returning to the state before tapping, and the cycle is repeated.

[0006] The existing feeding mechanism also has the problem that it cannot be adjusted to adapt to changes in nut size. Utility Model Content

[0007] This application provides a feeding mechanism for tapping nuts, which can solve the problems mentioned in the background art.

[0008] This application provides a feeding mechanism for tapping nuts, comprising:

[0009] The first mounting portion has a first vertical surface and a second vertical surface that are longitudinally opposite each other; the first vertical surface has a groove in the vertical direction;

[0010] The second mounting part is fixedly connected to the first mounting part and can be adjusted and fixed in the longitudinal direction; it includes: two sets of connecting posts with first and second ends respectively protruding from the first vertical plane and the second vertical plane and respectively on both sides of the groove, and a connecting plate connecting the second ends of the two sets of connecting posts.

[0011] Two limiting plates with a ⊥-shaped cross section; one side of the transverse plate is fixedly connected to the first end of the two sets of connecting columns, and the fixed position can be adjusted laterally; the longitudinal plate and the other side of the transverse plate form a channel for limiting the nut in the groove;

[0012] The baffle assembly includes: a baffle that is longitudinally slidably connected to a first mounting portion, and a first planar cam that switches the baffle between blocking the channel and not blocking the channel;

[0013] The stop lever assembly includes: a mounting block fixedly connected to a second vertical plane and capable of adjusting its fixed position up and down; a stop lever slidably connected to the mounting block in the longitudinal direction; and a second planar cam that allows the stop lever to switch between an insertion channel and a non-insertion channel.

[0014] The drive unit includes: a rotating shaft rotatably connected to the first mounting part and into which a first planar cam and a second planar cam are fitted, and a servo motor that drives the rotating shaft to rotate.

[0015] In some embodiments, a first adjustment mechanism is provided between the first mounting part and the second mounting part.

[0016] In some embodiments, the first adjustment mechanism includes: a lead screw fixedly connected to the second vertical plane and a lead screw nut rotatably connected to the mounting plate.

[0017] In some embodiments, a second adjustment mechanism is provided between the two limiting plates and the second mounting part; the second adjustment mechanism is used to drive the two limiting plates to move synchronously in opposite directions.

[0018] In some embodiments, one of the two sets of connecting columns protrudes through the limiting plate; the second adjustment mechanism is a bidirectional screw module, which is fixedly connected to the protruding parts of the two connecting columns; the two limiting plates are respectively fixedly connected to the two mounting sliders of the bidirectional screw module.

[0019] In summary, this application discloses a nut tapping feeding mechanism, comprising a first mounting part, a second mounting part, two limiting plates, a baffle assembly, a stop rod assembly, and a drive part. When the thickness of the nut changes, the fixed position of the second mounting part in the first mounting part is adjusted longitudinally; when the width of the nut changes, the fixed positions of the two limiting plates in the second mounting part are adjusted laterally. The channel can be adapted to nuts of different sizes within a certain range. When the nut size changes, the mounting block is adjusted vertically to re-align the stop rod, and the second planar cam maintains its connection with the rotating shaft. The advantages include: adaptability to nuts of different sizes within a certain range, and quick and convenient adjustment. Attached Figure Description

[0020] To better illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0021] Figure 1 This is a front view of this application;

[0022] Figure 2 This is a rear view of this application;

[0023] Figure 3 This is a top view of this application;

[0024] Figure 4 for Figure 1 A sectional view along the middle AA;

[0025] Figure 5 for Figure 2 An enlarged schematic diagram of part A in the middle;

[0026] Figure 6 for Figure 4 Enlarged schematic diagram of part B;

[0027] Figure 7 This is a schematic diagram of the first regulating mechanism;

[0028] Figure 8 This is a schematic diagram of the second regulating mechanism;

[0029] Figure 9 This is a schematic diagram of the first plane cam / second plane cam.

[0030] In the picture,

[0031] 1. First mounting part; 1a. First vertical surface; 1b. Second vertical surface; 1c. Groove; 1d. Through groove;

[0032] 2. Second mounting part; 2-1. Connecting post; 2-2. Connecting plate; 2a. First screw;

[0033] 3. Limiting plate; 3-1. Longitudinal plate; 3-2. Transverse plate; 3a. Second screw;

[0034] 4. Baffle assembly; 4-1. Baffle; 4-2. First plane cam;

[0035] 5. Stop lever assembly; 5-1. Mounting block; 5-2. Stop lever; 5-3. Second plane cam; 5a. Third screw;

[0036] 6. First adjusting mechanism; 6-1. Lead screw; 6-2. Lead screw nut;

[0037] 7. Second adjustment mechanism; 7a. Mounting slider;

[0038] 8. Drive unit; 8-1. Rotating shaft; 8-2. Servo motor;

[0039] 45a, First arc segment; 45b, Second arc segment; 45c, Connecting segment. Specific Implementation

[0040] The following description is provided in conjunction with the accompanying drawings, which are for illustrative purposes only and not strictly to scale. Unless otherwise defined, the technical or scientific terms used in this disclosure should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes. Unless otherwise specified, the embodiments in this application can be combined with each other.

[0041] Please see Figure 1 , Figure 2 and Figure 3 A nut tapping feeding mechanism includes a first mounting part 1, a second mounting part 2, two limiting plates 3, a baffle assembly 4, a stop rod assembly 5, and a drive part 8.

[0042] The first mounting part 1 has a first vertical surface 1a and a second vertical surface 1b, which are arranged to be opposite each other in the longitudinal direction. The first vertical surface 1a has a groove 1c in the vertical direction, that is, the upper and lower ends of the groove 1c penetrate the first mounting part 1, for the subsequent passage of the nut in the vertical direction through the groove 1c.

[0043] The second mounting part 2 includes two sets of connecting posts 2-1 and a connecting plate 2-2. The first end of each set of connecting posts 2-1 protrudes from the first vertical surface 1a, and the second end protrudes from the second vertical surface 1b. That is, the first mounting part 1 has a through hole for each connecting post 2-1 to pass through. The connecting plate 2-2 connects the second ends of the two sets of connecting posts 2-1, that is, the connecting plate 2-2 is located behind the second vertical surface 1b.

[0044] The second mounting part 2 is fixedly connected to the first mounting part 1 and can be adjusted longitudinally to fix its position. More specifically, the first mounting part 1 is designed with a threaded hole corresponding to each through hole, and a first screw 2a is threaded into the threaded hole. Tightening the first screw 2a so that it abuts against the corresponding connecting post 2-1 fixes the second mounting part 2 to the first mounting part 1. Conversely, loosening the first screw 2a allows the second mounting part 2 to be manually moved longitudinally relative to the first mounting part 1.

[0045] Both limiting plates 3 have a ⊥-shaped cross section, that is, the limiting plate 3 includes a longitudinal plate 3-1 and two transverse plates 3-2 located on both sides of the longitudinal plate 3-1.

[0046] Two limiting plates 3 are fixedly connected to the first ends of two sets of connecting columns 2-1 on one side of their transverse plates 3-2, allowing for lateral adjustment of their fixed positions. More specifically, each transverse plate 3-2 is designed with a waist-shaped groove corresponding to each connecting column 2-1. A second screw 3a is threaded through the waist-shaped groove and connected to the connecting column 2-1. Tightening the second screw 3a fixes the limiting plate 3 to the second mounting part 2. Conversely, loosening the second screw 3a allows the limiting plate 3 to be manually moved laterally relative to the second mounting part 2.

[0047] Two limiting plates 3, longitudinal plate 3-1, and another transverse plate 3-2 form a channel for limiting the nut within the groove 1c. That is, when the nut enters the channel, the axis of the nut's central hole is longitudinal; the nut has two vertical surfaces facing each other longitudinally, one of which is in contact with the inner wall of the groove 1c with the longitudinal direction as its normal, and the other vertical surface is in contact with the two transverse plates that make up the channel; the nut has two edges facing each other laterally, and the two edges respectively contact the two longitudinal plates that make up the channel; the nut has two horizontal surfaces facing each other laterally, allowing the nuts to be stacked vertically within the channel.

[0048] When the thickness of the nut changes, the second mounting part 2 is adjusted longitudinally to fix the position of the first mounting part 1; when the width of the nut changes, the two limiting plates 3 are adjusted laterally to fix the position of the second mounting part 2. The channel can be adapted to nuts of different sizes within a certain range.

[0049] Please see Figure 4 and Figure 7 In some embodiments, a first adjustment mechanism 6 is provided between the first mounting part 1 and the second mounting part 2.

[0050] Because the second mounting part 2 is relatively large in both vertical dimensions, it is inconvenient to manually move the second mounting part 2 longitudinally relative to the first mounting part 1. Adding a second adjustment mechanism 7 makes operation much easier.

[0051] Please see Figure 7In some embodiments, the first adjusting mechanism 6 includes a lead screw 6-1 and a lead screw nut 6-2. The lead screw 6-1 is fixedly connected to the second vertical surface 1b, and the lead screw nut 6-2 is rotatably connected to the mounting plate. More specifically, a handwheel may be fixedly connected to the lead screw nut 6-2 via a flange, and the handwheel has a through hole through which the lead screw 6-1 passes.

[0052] Loosening the first screw 2a and manually rotating the lead screw nut 6-2 will allow the second mounting part 2 to move longitudinally relative to the first mounting part 1. Alternatively, the first screw 2a can be omitted, and the second mounting part 2 can be naturally fixed to the first mounting part 1 by relying on the self-locking of the lead screw 6-1 and the lead screw nut 6-2 after stopping the rotation of the lead screw nut 6-2.

[0053] Please see Figure 1 and Figure 8 In some embodiments, a second adjustment mechanism 7 is provided between the two limiting plates 3 and the second mounting part 2. The second adjustment mechanism 7 is used to drive the two limiting plates 3 to move synchronously in opposite directions.

[0054] Manually moving the limiting plate 3 laterally relative to the second mounting part 2 is cumbersome and requires multiple fine adjustments to ensure that the two limiting plates 3 move the same distance. Adding a second adjustment mechanism 7 makes operation much more convenient.

[0055] Please see Figure 8 In some embodiments, one of the two sets of connecting posts 2-1 protrudes through the limiting plate 3. The second adjusting mechanism 7 is a bidirectional lead screw module, fixedly connected to the protruding parts of the two connecting posts 2-1, that is, the two connecting posts 2-1 are flush. Two U-shaped clips can be used to fix the bidirectional lead screw module to the protruding parts of the two connecting posts 2-1. The two limiting plates 3 are respectively fixedly connected to the two mounting sliders 7a of the bidirectional lead screw module.

[0056] After loosening the second screw 3a, manually rotate the double-acting screw to drive the two limit plates 3 to move in opposite directions synchronously.

[0057] Please see Figure 5 , Figure 6 and Figure 9 The baffle assembly 4 includes a baffle 4-1 and a first planar cam 4-2.

[0058] The baffle 4-1 is longitudinally slidably connected to the first mounting part 1. The baffle 4-1 is used to block the channel and support the bottom nut, so that the nuts can be stacked up and down in the channel. The stacked nuts are marked from bottom to top as: Nut 1, Nut 2, Nut 3, etc. More specifically, the bottom of the first mounting part 1 extends downward beyond the limiting plate 3, and the extended part is provided with a groove for the baffle 4-1 to pass through.

[0059] The first planar cam 4-2 is used to switch the baffle 4-1 between blocking the channel and not blocking the channel. More specifically, the first planar cam 4-2 is rotatably connected to the first mounting part 1 about a vertical axis, and the first cam groove 1c includes a first arc segment 45a with a larger diameter, a second arc segment 45b with a smaller diameter, and two connecting segments 45c connecting the first arc segment 45a and the second arc segment 45b.

[0060] The baffle 4-1 is equipped with a bearing, and a groove-pin pair is formed between the bearing and the first cam groove 1c. When the bearing is in the first arc segment 45a, the baffle 4-1 blocks the passage; when the bearing passes through the second arc segment 45b from the first arc segment 45a and returns to the first arc segment 45a, the baffle 4-1 switches from blocking the passage to not blocking the passage, and then switches back to blocking the passage.

[0061] Please see Figure 5 , Figure 6 and Figure 9 The stop lever assembly 5 includes: mounting block 5-1, stop lever 5-2, and second plane cam 5-3.

[0062] Mounting block 5-1 is fixedly connected to the second vertical surface 1b and can be adjusted up and down to fix its position. More specifically, referring to the limiting plate 3, mounting block 5-1 is designed with an oblong groove, and a third screw 5a is threaded through the oblong groove and connected to the first mounting part 1.

[0063] The stop rod 5-2 is longitudinally slidably connected to the mounting block 5-1. An optical shaft can be used as the stop rod 5-2. A linear bearing for sliding connection of the optical shaft is fixedly connected to the mounting block 5-1. The diameter of the stop rod 5-2 is rationally designed according to the variation range of the channel, so that the stop rod 5-2 can be inserted into the center hole of the nut.

[0064] The second planar cam 5-3 is used to switch the stop lever 5-2 between the insertion channel and the non-insertion channel. More specifically, the second planar cam 5-3 is rotatably connected to the mounting block 5-1 about a vertical axis, the second cam groove 1c is the same as the first cam groove 1c, and the stop lever 5-2 also forms a pin-groove pair between the bearing and the second cam groove 1c.

[0065] After adjusting the mounting block 5-1 to a fixed position, the stop rod 5-2 is inserted into the channel, which is also inserted into the center hole of nut No. 2. If the stop rod 5-2 is not inserted into the channel, it will be removed from the center hole of nut No. 2. Correspondingly, the first mounting part 1 has a through groove 1d for the stop rod 5-2 to move and be inserted.

[0066] Please see Figure 2 and Figure 4The drive unit 8 is used to drive the first planar cam 4-2 and the second planar cam 5-3 to rotate synchronously, and includes a rotating shaft 8-1 and a servo motor 8-2. The rotating shaft 8-1 is rotatably connected to the first mounting part 1. The first planar cam 4-2 and the second planar cam 5-3 are fitted into the rotating shaft 8-1. The rotating shaft 8-1, the first planar cam 4-2, and the second planar cam 5-3 can be rotated together by a key. By changing the size of the nut, the mounting block 5-1 can be adjusted up and down to fix its position, so that the stop bar 5-2 is aligned again. The second planar cam 5-3 can maintain its connection with the rotating shaft 8-1. The servo motor 8-2 is used to drive the rotating shaft 8-1 to rotate.

[0067] In the context of the nut tapping process, the second cam groove 1c is the first cam groove 1c rotated 180 degrees around the axis. The first arc segment 45a of the second cam groove 1c corresponds to the second arc segment 45b and the two connecting segments 45c of the first cam groove 1c. Correspondingly, the second arc segment 45b and the two connecting segments 45c of the second cam groove 1c correspond to the first arc segment 45a of the first cam groove 1c.

[0068] Baffle 4-1 blocks the passage; stop rod 5-2 is inserted into the center hole of nut No. 2, with stop rod 5-2 tangent to the lower inner wall of the center hole, i.e., stop rod 5-2 pressing downward against the center hole. Through baffle 4-1 and stop rod 5-2, nut No. 1 is limited, and the tapping machine taps nut No. 1. After tapping is completed, servo motor 8-2 rotates one revolution. During this process:

[0069] The stop lever 5-2 remains inserted into the center hole of nut No. 2. The baffle 4-1 switches from blocking the channel to not blocking the channel. Nut No. 1, which has been tapped, falls out of the channel. The baffle 4-1 then switches back to blocking the channel.

[0070] The baffle 4-1 keeps blocking the channel, and the stop bar 5-2 switches from inserting into the channel to not inserting into the channel. All nuts in the channel move downward until nut No. 2 touches the baffle 4-1. Accordingly, nut No. 2 becomes the new nut No. 1, and nut No. 3 becomes the new nut No. 2. The stop bar 5-2 then switches back to inserting into the channel, that is, inserting into the center hole of the new nut No. 2, returning to the state before tapping, and the cycle is repeated.

Claims

1. A nut tapping discharge mechanism characterized by comprising: include: The first mounting part (1) has a first vertical surface (1a) and a second vertical surface (1b) that are opposite each other in the longitudinal direction; the first vertical surface (1a) has a groove (1c) in the vertical direction; The second mounting part (2) is fixedly connected to the first mounting part (1) and can be adjusted and fixed in the longitudinal direction; it includes: two sets of connecting posts (2-1) with the first end and the second end respectively passing through the first vertical surface (1a) and the second vertical surface (1b) and respectively on both sides of the groove (1c); and a connecting plate (2-2) connecting the second ends of the two sets of connecting posts (2-1). Two limiting plates (3) with a cross-section in the shape of ⊥; one side of the transverse plate (3-2) is fixedly connected to the first end of the two sets of connecting columns (2-1) respectively, and can be adjusted and fixed laterally; the longitudinal plate (3-1) and the other side of the transverse plate (3-2) form a channel for limiting the nut in the groove (1c); The baffle assembly (4) includes: a baffle (4-1) that is longitudinally slidably connected to the first mounting part (1), and a first planar cam (4-2) that switches the baffle (4-1) between blocking the channel and not blocking the channel; The stop rod assembly (5) includes: a mounting block (5-1) fixedly connected to the second vertical surface (1b) and capable of adjusting its fixed position up and down; a stop rod (5-2) slidably connected to the mounting block (5-1) in the longitudinal direction; and a second planar cam (5-3) that allows the stop rod (5-2) to switch between an insertion channel and a non-insertion channel. The drive unit (8) includes: a rotating shaft (8-1) rotatably connected to the first mounting part (1) and into which the first planar cam (4-2) and the second planar cam (5-3) are fitted, and a servo motor (8-2) that drives the rotating shaft (8-1) to rotate.

2. A nut threading discharge mechanism according to claim 1, wherein A first adjustment mechanism (6) is provided between the first mounting part (1) and the second mounting part (2).

3. A nut threading discharge mechanism according to claim 2, wherein The first adjustment mechanism (6) includes: a lead screw (6-1) fixedly connected to the second vertical surface (1b) and a lead screw nut (6-2) rotatably connected to the mounting plate.

4. The nut threading discharge mechanism according to claim 1, wherein A second adjustment mechanism (7) is provided between the two limit plates (3) and the second mounting part (2); the second adjustment mechanism (7) is used to drive the two limit plates (3) to move synchronously in opposite directions.

5. A nut threading discharge mechanism according to claim 4, wherein One of the two sets of connecting columns (2-1) protrudes through the limiting plate (3); the second adjustment mechanism (7) is a bidirectional screw module, which is fixedly connected to the protruding parts of the two connecting columns (2-1); the two limiting plates (3) are respectively fixedly connected to the two mounting sliders (7a) of the bidirectional screw module.

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