A pretreatment device for screw blank

Abstract

The present invention discloses a pretreatment device for screw blanks, belonging to the technical field of screw blank treatment, and comprises a shell; a grinding part, which is installed inside the shell and is used for grinding the outer side surface of the blank; a feeding assembly, which is installed at one end of the shell and is used for transporting the blank to the inside of the shell and cleaning the blank with a cleaning liquid; a discharging assembly, which is installed on an end surface of the shell away from the feeding assembly and is used for transporting the ground blank from the inside of the shell to the outside; wherein the movement direction of the feeding assembly is perpendicular to the movement direction of the grinding part, and the feeding assembly and the grinding part cooperate with each other to make the blank continuously rotate during the movement inside the shell. The present invention integrates the cleaning and grinding steps together, and the blank is polished immediately after cleaning, thereby improving the efficiency of processing the blank.

Description

Technical Field

[0001] The invention relates to the technical field of screw blank processing, and in particular to a screw blank preprocessing device. Background Art

[0002] Before the screw rod blank is further processed, it is very important to pre-treat it effectively to remove surface defects, impurities and oxide layers. Traditional pre-treatment methods often have problems such as low efficiency, high cost and difficulty in adapting to blanks of different sizes.

[0003] At present, in the process of processing the blank, generally, the oil, rust and other impurities on the surface of the blank are cleaned by cleaning first, and then the blank is polished to make the surface of the blank smooth, providing a good foundation for subsequent processing. However, the current cleaning and polishing are generally processed separately, and the blank needs to be transferred to the polishing station after cleaning, which will result in low processing efficiency. In order to solve the above problems, the present invention provides a pretreatment device for screw blanks. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a pre-treatment device for screw blanks, which integrates the steps of cleaning and grinding together. The blanks are grinded immediately after cleaning, thereby improving the efficiency of processing the blanks.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a pretreatment device for a screw blank, comprising:

[0006] shell;

[0007] A grinding part, which is installed inside the shell and is used for grinding the outer side of the blank;

[0008] A feed assembly, the feed assembly being mounted at one end of the housing and used to transport the blanks to the interior of the housing and to clean the blanks with a cleaning fluid;

[0009] A discharging assembly, which is mounted on an end face of the housing away from the feeding assembly and is used to transport the polished blank from the inside of the housing to the outside;

[0010] The moving direction of the feeding assembly is perpendicular to the moving direction of the grinding part, and the feeding assembly and the grinding part cooperate with each other to make the blank rotate continuously during the movement inside the shell.

[0011] Preferably, the feed assembly comprises:

[0012] A feed wheel, which is rotatably mounted on the housing through a bracket and driven by an external power device;

[0013] The cleaning part is located above the feeding wheel and is mounted on a mounting frame, and the mounting frame is fixedly mounted on the housing.

[0014] Preferably, the cleaning unit comprises:

[0015] A base frame, wherein the base frame is fixedly mounted on the mounting frame, and a liquid inlet pipe is mounted on the base frame;

[0016] A lower pressing plate, wherein the lower pressing plate is slidably mounted on the base frame, and an upper end of the lower pressing plate extends into an inner cavity of the base frame;

[0017] A scraper, the scraper being slidably mounted in a hollow groove provided on the side wall of the base frame;

[0018] The lower pressing plate and the scraper are sequentially distributed along the rotation direction of the blank, and the lower pressing plate and the scraper are both slidably mounted on the mounting frame, and a cleaning spring is installed between the lower pressing plate and the scraper and the mounting frame, and the cleaning spring has a pressing force to press the lower pressing plate and the scraper downward;

[0019] When the lower pressing plate moves upward, the cleaning liquid inside the base frame flows along the inner side wall of the lower pressing plate onto the blank.

[0020] Preferably, the upper end of the lower pressing plate close to the scraper is inclined toward a side away from the center direction of the lower pressing plate to form an inclined surface, and the inclined surface of the lower pressing plate is in contact with the side wall of the base frame.

[0021] Preferably, a limiting rod is fixedly connected to the side wall of the cavity top of the internal cavity of the base frame, and a limiting groove matched with the limiting rod is formed on the lower pressing plate.

[0022] Preferably, the lower end of the lower pressing plate is an arc surface and is rotatably mounted with a plurality of balls, and a spring for guiding the cleaning liquid is fixedly connected to a side of the lower pressing plate close to the scraper;

[0023] The lower end of the scraper is folded toward the lower pressing plate to form a cleaning end.

[0024] Preferably, the lower pressure plate and the scraper are fixedly connected to a fixing rod on the side surface opposite to each other, the fixing rod extends into a slide groove provided on the mounting frame and is slidably connected to the slide groove, and the cleaning spring is installed between the groove wall of the slide groove and the fixing rod.

[0025] Preferably, the polishing part comprises:

[0026] A driving roller, which is rotatably mounted inside the housing and matches the position of the feeding wheel, and is driven by a first motor;

[0027] A driven roller, both ends of which are rotatably connected with sliders, the sliders are slidably installed inside the fixed frame, a grinding spring is fixedly connected between the slider and the shell, the grinding spring has a pressing force to press the slider toward the axial direction of the blank, and the fixed frame is fixedly connected to the shell;

[0028] A grinding roller, the grinding roller is rotatably mounted inside the housing, and the grinding roller is driven by a second motor;

[0029] A grinding channel is formed between the driving roller, the driven roller and the grinding roller, the blank enters the grinding channel through the feeding assembly and is ground, and the rotation speed of the first motor is lower than the rotation speed of the second motor.

[0030] Preferably, the discharging assembly comprises:

[0031] A driving wheel, which is rotatably mounted on the housing and driven by an external power device;

[0032] A driven wheel, both ends of which are rotatably connected with blocks, the block is slidably mounted on a fixed frame, the fixed frame is fixedly connected to the outer shell, and a discharge spring is installed between the block and the fixed frame, the discharge spring has a pressing force to press the block toward the driving wheel.

[0033] The beneficial effects of the present invention are:

[0034] The present invention can make the blank rotate continuously during the process of moving forward to achieve grinding through the cooperation of the grinding part and the feeding assembly. Moreover, the blank rotates during the process of moving forward, so that the lower pressure plate and the scraper can cooperate with each other, so that the cleaning liquid cleans the outer surface of the blank.

[0035] The driving roller, the driven roller and the grinding roller of the present invention are combined to form a grinding space, and the driven roller can apply a pressing force to the blank, so that the driving roller and the grinding roller cooperate with each other to grind the blank stably.

[0036] The present invention realizes that the cleaning liquid inside the base frame flows onto the blank through the lower pressing plate when the blank is transported, and the lower pressing plate can seal the base frame when the blank is not transported, thereby avoiding the waste of cleaning liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1A schematic structural diagram of a screw blank pretreatment device provided in an embodiment of the present invention (first perspective).

[0039] Figure 2 A schematic structural diagram of a screw blank pretreatment device provided in an embodiment of the present invention (second viewing angle).

[0040] Figure 3 It is a cross-sectional view of the base frame of the present invention.

[0041] Figure 4 The figure is a schematic diagram of the installation of the driven wheel and the driving wheel of the present invention.

[0042] Figure 5 It is a schematic diagram of the assembly of the driving roller, the grinding roller and the driven roller of the present invention.

[0043] Description of reference numerals:

[0044] 1. Shell, 2. Driving roller, 3. Feed wheel, 4. Mounting frame, 5. Grinding roller, 6. Base frame, 7. Lower pressure plate, 8. Scraper, 9. Cleaning spring, 10. Limit rod, 11. Fixed rod, 12. Slide, 13. Driven roller, 14. Slider, 15. Fixed frame, 16. Grinding spring, 17. First motor, 18. Driving wheel, 19. Driven wheel, 20. Block, 21. Fixed frame, 22. Discharge spring, 23. Second motor, 24. Ball, 25. Shrapnel. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] A pretreatment device for screw rod blanks, such as Figures 1 to 5 shown.

[0047] Embodiment 1:

[0048] A pretreatment device for screw blanks comprises a shell 1, wherein the shell 1 comprises two frames, wherein a circular feed port is provided on the frames, and a grinding part is installed between the two frames for grinding the outer side surface of the blank. A feed assembly is installed on one frame, and a discharge assembly is installed on the other frame. The feed assembly can transport the blank to be processed to the inside of the shell 1, and can clean the blank with a cleaning liquid during transportation. The discharge assembly can transport the ground blank from the inside of the shell 1 to the outside. The grinding part can drive the blank to rotate along its own axis during the grinding process, and the feed assembly and the discharge assembly can make the blank move in a straight line along its own axis direction, so that the blank can continuously rotate during the forward movement, and then the cleaning liquid can thoroughly clean the outer side surface of the blank.

[0049] The feeding assembly includes a feeding wheel 3, which is rotatably mounted on a bracket, which is fixedly mounted on the outer shell 1. The feeding wheel 3 is driven by an external power device (this power device can be a stepping motor), and a cleaning part is installed above the feeding wheel 3. The cleaning part is mounted on a mounting frame 4, and the mounting frame 4 is fixedly mounted on the outer shell 1. The cleaning part can cooperate with the feeding wheel 3 to press the blank from both sides of the blank. At this time, the feeding wheel 3 rotates to transport the blank to the inside of the outer shell 1.

[0050] The grinding part includes a driving roller 2, a driven roller 13 and a grinding roller 5. The driving roller 2, the driven roller 13 and the grinding roller 5 are combined to form a grinding channel. The blank enters the grinding channel through the feeding assembly and is ground. When the blank enters the grinding channel, the axes of the driving roller 2, the driven roller 13 and the grinding roller 5 are parallel to the axis of the blank.

[0051] The driving roller 2 and the grinding roller 5 are rotatably installed inside the shell 1, the driving roller 2 is driven by the first motor 17, and the grinding roller 5 is driven by the second motor 23 (the motor shafts of the first motor 17 and the second motor 23 are respectively connected to the driving roller 2 and the grinding roller 5 through belts, so as to drive the driving roller 2 and the grinding roller 5 to rotate), the first motor 17 and the second motor 23 are both installed on the shell 1, and the driven roller 13 is slidably installed inside the shell 1, and the driven roller 13 can slide along the radial direction of the feed port, wherein the rotation speed of the driving roller 2 and the grinding roller 5 is different, the rotation speed of the driving roller 2 is lower than the rotation of the grinding roller 5, the outer side of the driving roller 2 is wrapped with rubber, which can drive the blank to rotate through friction, and the rotation of the grinding roller 5 can grind the blank.

[0052] Both ends of the driven roller 13 are rotatably connected with sliders 14, and the slider 14 is slidably installed inside the fixed frame 15. The fixed frame 15 is fixedly connected to the outer shell 1, and a grinding spring 16 is fixedly connected between the slider 14 and the outer shell 1. One end of the grinding spring 16 is fixedly connected to the slider 14, and the other end is fixedly connected to the outer shell 1. The grinding spring 16 has a pressing force to press the slider 14 toward the axial direction of the blank, so that the blank can press against the driving roller 2 and the grinding roller 5, so that the driving roller 2 and the grinding roller 5 cooperate with each other to grind the blank.

[0053] The discharging assembly includes a driving wheel 18 and a driven wheel 19. The driving wheel 18 is rotatably mounted on another bracket, which is also fixedly connected to the shell 1. The driving wheel 18 is driven by an external power device (this power device can also use a stepping motor), and the driven wheel 19 is slidably mounted on the shell 1.

[0054] Blocks 20 are rotatably connected to both end surfaces of the driven wheel 19. The block 20 is slidably installed on a fixing frame 21. The fixing frame 21 is fixedly connected to the outer shell 1, and a discharge spring 22 is installed between the block 20 and the fixing frame 21. One end of the discharge spring 22 is fixedly connected to the fixing frame 21, and the other end is fixedly connected to the corresponding block 20. The discharge spring 22 has a clamping force that presses the block 20 toward the direction of the driving wheel 18, so that the driving wheel 18 and the driven wheel 19 can cooperate with each other to clamp the blank, so that the blank can be driven to move when the driving wheel 18 rotates, and the blank can be moved out from the inside of the outer shell 1.

[0055] The arc surfaces of the feed wheel 3, the driving wheel 18 and the driven wheel 19 are all concave structures, which can drive the blank to move more stably.

[0056] Embodiment 2:

[0057] The cleaning part includes a base frame 6, which is fixedly mounted on the mounting frame 4. A liquid inlet pipe is mounted on the base frame 6, and the cleaning liquid can continuously enter the interior of the base frame 6 through the liquid inlet pipe. A lower pressing plate 7 and a scraper 8 are slidably mounted on the lower side of the base frame 6. The lower pressing plate 7 and the scraper 8 are sequentially distributed along the rotation direction of the blank, such as Figure 3 As shown, the scraper 8 is located on the right side of the lower pressing plate 7. At this time, the blank is moved along Figure 3 Rotate clockwise as shown.

[0058] The upper end of the lower pressing plate 7 extends into the inner cavity of the base frame 6, and the upper end of the side of the lower pressing plate 7 close to the scraper 8 (that is, the end of the lower pressing plate 7 located inside the cavity of the base frame 6) is inclined away from the center of the lower pressing plate 7 to form an inclined surface and fits with the side wall of the base frame 6 (such as Figure 3As shown, the inclined surface of the lower pressing plate 7 is in contact with the side wall of the base frame 6), when the lower pressing plate 7 moves upward, the inclined surface on the lower pressing plate 7 is no longer in contact with the side wall of the base frame 6. At this time, a gap will be generated between the lower pressing plate 7 and the side wall of the base frame 6, so that the cleaning liquid inside the base frame 6 can flow to the blank through the lower pressing plate 7. A spring piece 25 is fixedly connected to the side surface of the lower end of the lower pressing plate 7 close to the scraper 8, and the spring piece 25 can drain the cleaning liquid so that the cleaning liquid can flow better to the blank. A plurality of ball bearings 24 are also rotatably installed on the lower end of the lower pressing plate 7. The lower pressing plate 7 contacts with the blank through the ball bearings 24, and the blank can be better moved toward the inside of the shell 1 when the feed wheel 3 rotates. A limiting rod 10 is fixedly connected to the side wall of the top of the cavity inside the base frame 6, and a limiting groove compatible with the limiting rod 10 is provided on the lower pressing plate 7, which can make the lower pressing plate 7 slide more stably.

[0059] The upper end of the scraper 8 extends into the empty groove opened on the side wall of the base frame 6, and the lower end of the scraper 8 is folded toward the lower pressure plate 7 to form a cleaning end. The cleaning end on the scraper 8 can scrape off rust and dirt on the blank, and the scraper 8 can slide along the track of the empty groove.

[0060] A fixing rod 11 is fixedly connected to the side surface opposite to the lower pressure plate 7 and the scraper 8. The fixing rod 11 extends into the slide groove 12 provided on the mounting frame 4, and a cleaning spring 9 is installed between the fixing rod 11 and the groove wall of the slide groove 12. One end of the cleaning spring 9 is fixedly connected to the groove wall of the slide groove 12, and the other end is fixedly connected to the corresponding fixing rod 11. The cleaning spring 9 has a clamping force to press the fixing rod 11 downward, so that when the blank is transported to the interior of the shell 1, the lower pressure plate 7 and the scraper 8 can cooperate with the feed wheel 3 to clamp the blank, and then the blank can be moved to the interior of the shell 1 when the feed wheel 3 rotates. At the same time, under the drainage action of the lower pressure plate 7 and the spring sheet 25, the cleaning liquid inside the base frame 6 will flow to the side of the blank, and at the same time cooperate with the cleaning end of the scraper 8 to clean the side of the blank.

[0061] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A pretreatment device for screw blanks, characterized in that: include: Housing (1); A grinding part, which is installed inside the housing (1) and is used to grind the outer side of the blank; A feed assembly, the feed assembly being mounted at one end of the housing (1), the feed assembly being used to transport the blanks into the interior of the housing (1) and to clean the blanks with a cleaning fluid; A discharge assembly, the discharge assembly being mounted on an end face of the housing (1) away from the feed assembly and being used to transport the polished blank from the inside of the housing (1) to the outside; The movement direction of the feed assembly is perpendicular to the movement direction of the grinding part, and the feed assembly and the grinding part cooperate with each other to enable the blank to continuously rotate while moving inside the housing (1); The feed assembly comprises: A feed wheel (3), the feed wheel (3) being rotatably mounted on the housing (1) via a bracket, and the feed wheel (3) being driven by an external power device; A cleaning part, the cleaning part is located above the feed wheel (3), and the cleaning part is mounted on a mounting frame (4), and the mounting frame (4) is fixedly mounted on the housing (1); The cleaning unit comprises: A base frame (6), the base frame (6) being fixedly mounted on the mounting frame (4), and a liquid inlet pipe being mounted on the base frame (6); A lower pressing plate (7), wherein the lower pressing plate (7) is slidably mounted on the base frame (6), and the upper end of the lower pressing plate (7) extends into the internal cavity of the base frame (6); A scraper (8), the scraper (8) being slidably mounted in a hollow groove provided on a side wall of the base frame (6); The lower pressing plate (7) and the scraper (8) are sequentially distributed along the rotation direction of the blank, the lower pressing plate (7) and the scraper (8) are both slidably mounted on the mounting frame (4), and a cleaning spring (9) is installed between the lower pressing plate (7) and the scraper (8) and the mounting frame (4), and the cleaning spring (9) has a pressing force to press the lower pressing plate (7) and the scraper (8) downward; When the lower pressing plate (7) moves upward, the cleaning liquid inside the base frame (6) flows along the inner side wall of the lower pressing plate (7) onto the blank; The polishing section comprises: A driving roller (2), the driving roller (2) being rotatably mounted inside the housing (1), the driving roller (2) being adapted to the position of the feed wheel (3), and the driving roller (2) being driven by a first motor (17); A driven roller (13), both ends of the driven roller (13) being rotatably connected to a slider (14), the slider (14) being slidably mounted inside a fixed frame (15), a grinding spring (16) being fixedly connected between the slider (14) and the housing (1), the grinding spring (16) having a pressing force for pressing the slider (14) toward the axial direction of the blank, and the fixed frame (15) being fixedly connected to the housing (1); a grinding roller (5), the grinding roller (5) being rotatably mounted inside the housing (1), the grinding roller (5) being driven by a second motor (23); A grinding channel is formed between the driving roller (2), the driven roller (13) and the grinding roller (5), the blank enters the grinding channel through the feeding assembly and is ground, and the rotation speed of the first motor (17) is lower than the rotation speed of the second motor (23).

2. A pretreatment device for a screw blank as claimed in claim 1, characterized in that: The upper end of the lower pressing plate (7) on the side close to the scraper (8) is inclined toward the side away from the center direction of the lower pressing plate (7) to form an inclined surface, and the inclined surface of the lower pressing plate (7) is in contact with the side wall of the base frame (6).

3. A pretreatment device for a screw rod blank as claimed in claim 2, characterized in that: A limiting rod (10) is fixedly connected to the side wall of the cavity top of the internal cavity of the base frame (6), and a limiting groove matching the limiting rod (10) is provided on the lower pressing plate (7).

4. A pretreatment device for a screw blank as claimed in claim 1, characterized in that: The lower end of the lower pressure plate (7) is an arc surface and is rotatably mounted with a plurality of balls (24); a spring sheet (25) for guiding cleaning fluid is fixedly connected to a side of the lower pressure plate (7) close to the scraper (8); The lower end of the scraper (8) is folded toward the lower pressing plate (7) to form a cleaning end.

5. A pretreatment device for a screw blank as claimed in claim 1, characterized in that: A fixing rod (11) is fixedly connected to the side surfaces opposite to each other of the lower pressure plate (7) and the scraper plate (8); the fixing rod (11) extends into a slide groove (12) provided on the mounting frame (4) and is slidably connected to the slide groove (12); the cleaning spring (9) is installed between the groove wall of the slide groove (12) and the fixing rod (11).

6. A pretreatment device for a screw blank as claimed in claim 1, characterized in that: The discharging assembly comprises: A driving wheel (18), the driving wheel (18) being rotatably mounted on the housing (1) and driven by an external power device; A driven wheel (19), both ends of which are rotatably connected to blocks (20), the blocks (20) being slidably mounted on a fixing frame (21), the fixing frame (21) being fixedly connected to the housing (1), and a discharge spring (22) being mounted between the blocks (20) and the fixing frame (21), the discharge spring (22) having a pressing force for pressing the blocks (20) in the direction of the driving wheel (18).

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