Box-type fan framework blanking positioning device

Abstract

A box type fan framework blanking positioning device comprises a fixing base and positioning bases, the fixing base comprises a bottom plate and side plates, the side plates are arranged on the two side edges of one corner of the bottom plate respectively, notches are formed in the positions, corresponding to the corner, of the bottom plate and the side plates, and the two positioning bases are installed on the bottom plate and correspond to the side plates on the two sides respectively. The positioning seat is provided with a limiting channel, the longitudinal face and the transverse face of the limiting channel are flush with the inner side face of the side plate and the upper side face of the bottom plate respectively, and the bottom plate is further provided with a mounting hole. According to the utility model, the positioning seat is arranged on the fixed seat, the limiting channel through which the section bar passes is arranged on the positioning seat, and the cutting end of the section bar is positioned through the limiting channel when the section bar is cut, so that the section bar is prevented from bouncing when being cut, a grinding wheel of the cutting machine is prevented from being blocked, and the safety risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of production tooling for box fans, in particular to a blanking and positioning device for the frame of a box fan. Background Art

[0002] When our company produces box fans, it is necessary to cut and weld profiles such as angle steel. When cutting the material, it is necessary to cut bevel angles on the profiles.

[0003] Chinese Patent Document CN211387776U, publication (announcement) date: September 1, 2020, is a bevel cutting tooling for the angle steel material of the frame of a centrifugal fan disclosed by our company. It includes a bottom support cross beam, and a top support cross beam is fixed on the top of the bottom support cross beam. A first inclined support rod and a second inclined support rod are symmetrically fixed at the middle part of the top support cross beam. The first inclined support rod and the second inclined support rod are arranged at a right angle, and the included angle between the first inclined support rod and the bottom support cross beam is arranged at 45°. Its characteristics are as follows: This tooling can be used for the bevel cutting operation in the manufacturing process of the fan bracket, and then cut a 45° angle at its corner position, ensuring its subsequent normal assembly and welding. Its disadvantages are as follows: When performing the bevel cutting operation, it is necessary for the worker to hold the angle steel with one hand and operate the grinding wheel cutting machine with the other hand. Since there is no fixed limit for the angle steel to be cut, it depends entirely on the fingers to hold the angle steel tightly during the bevel cutting operation. Since there are a large number of cutting sparks during cutting, in order to avoid burns, the hand is generally held at the end of the angle steel far from the grinding wheel disc of the cutting machine. This causes the end of the angle steel close to the grinding wheel disc, that is, the cutting end, to bounce and shake easily during cutting, and the bouncing and shaking of the angle steel during cutting may cause the grinding wheel disc to jam, and the jamming of the grinding wheel disc also poses a risk of damage to the grinding wheel disc. The fragments of the grinding wheel disc fly out at high speed, with great destructiveness. Therefore, the existing tooling has a relatively large safety risk. In response to this problem, the technical personnel improved this tooling. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a blanking and positioning device for the frame of a box fan. By installing a positioning seat on a fixed seat and setting a limiting channel through which the profile passes on the positioning seat, the cutting end of the profile is positioned through the limiting channel during cutting, thereby preventing the profile from bouncing during cutting, preventing the grinding wheel disc of the cutting machine from jamming, and reducing the safety risk.

[0005] To achieve the above-mentioned purpose, the utility model provides a box-type fan frame blanking and positioning device, including a fixing seat and a positioning seat, the fixing seat includes a bottom plate and a side plate, side plates are respectively arranged on both sides of one corner of the bottom plate, the bottom plate and the side plate are provided with notches at positions corresponding to the corner, the two positioning seats are installed on the bottom plate, and respectively correspond to the side plates on both sides, a limiting channel is arranged on the positioning seat, and the longitudinal surface and the transverse surface of the limiting channel are respectively flush with the inner side surface of the side plate and the upper side surface of the bottom plate; a mounting hole is also arranged on the bottom plate.

[0006] The limiting channel is L-shaped, rectangular or C-shaped.

[0007] Pads are arranged on the bottom plate at both sides of the two positioning seats, and the upper side of the pad is flush with the transverse surface of the limiting channel.

[0008] The positioning seat is provided with a penetrating accommodating hole, a movable block is installed in the accommodating hole, the movable block cooperates with the accommodating hole to form the limiting channel, at least two guide posts are installed on the movable block, a sliding hole is provided on the positioning seat at a position corresponding to the guide post, the guide post is slidably connected with the sliding hole, a threaded hole is provided on the positioning seat, an adjusting screw is screwed to the threaded hole, and the adjusting screw is movably connected to the movable block, the position of the movable block is adjusted by rotating the adjusting screw, thereby adjusting the size of the limiting channel.

[0009] The sliding hole is provided with a countersunk hole at one end away from the movable block, a section of the guide column located in the countersunk hole is sleeved with a spring, a limiting piece is installed at the end of the guide column located in the countersunk hole, one end of the spring abuts against the bottom of the countersunk hole, and the other end abuts against the limiting piece, and the adjusting screw is in contact with the movable block.

[0010] The fixing seat is provided with a mounting position, and the positioning seat is fixedly mounted on the mounting position.

[0011] A support frame is installed on the fixed seat at the end surface corresponding to the limiting channel.

[0012] A cushion block is arranged at the bottom of the support frame.

[0013] Compared with the prior art, the utility model has the following technical effects:

[0014] 1. The mounting holes on the base plate of the present utility model are used for inserting bolts. The fixing seat is fixedly installed on the cutting table of the cutting machine through the mounting holes, and the notch is aligned with the grinding wheel of the cutting machine. The grinding wheel can enter the notch, so that the grinding wheel can completely cut off the profile. The positioning seat is close to the notch, and the size of the limiting channel is slightly larger than the outer dimension of the profile, facilitating the profile to pass through, thereby positioning the profile. By installing the positioning seat on the fixing seat and setting the limiting channel for the profile to pass through on the positioning seat, the cutting end of the profile during cutting is positioned through the limiting channel, thereby preventing the profile from bouncing during cutting, preventing the grinding wheel of the cutting machine from jamming, and reducing safety risks.

[0015] 2. The present utility model adjusts the position of the movable block by rotating the adjusting screw, thereby adjusting the size of the limiting channel. Such a structure has two advantages. First, when the profile is inserted into the limiting channel, the size of the limiting channel can be enlarged by rotating the adjusting screw, facilitating the profile to pass through. Second, before cutting, the adjusting screw can be rotated to make the movable block abut and fix the profile, thereby achieving a better effect of preventing bouncing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the fixing seat of the present utility model.

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the positioning seat of the present utility model.

[0020] Figure 4 It is a sectional structural schematic diagram of the positioning seat of the present utility model.

[0021] Figure 5 It is a structural schematic diagram of the support frame installed on the fixing seat of the present utility model.

[0022] Figure 6 It is a diagram of the usage state of the present utility model.

[0023] In the figure:

[0024] Fixing seat 10, base plate 11, side plate 12, backing plate 13, notch 14, mounting position 15, mounting hole 16;

[0025] Positioning seat 20, limiting channel 21, longitudinal surface 211, transverse surface 212, receiving hole 22, movable block 23, sliding hole 24, counterbore 241, guide post 25, spring 26, limiting member 27, threaded hole 28, adjusting screw 29;

[0026] Support frame 30, spacer block 31;

[0027] Angle steel 40. Specific implementation manner

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

[0029] Embodiment 1:

[0030] Please refer to Figure 1-4 , a box-type fan skeleton blanking positioning device, including a fixed seat 10 and a positioning seat 20. The fixed seat 10 includes a bottom plate 11 and side plates 12. Side plates 12 are respectively arranged on both sides of one corner of the bottom plate 11. A notch 14 is provided at the position corresponding to this corner on the bottom plate 11 and the side plates 12. The two positioning seats 20 are installed on the bottom plate 11 and respectively correspond to the side plates 12 on both sides. A limiting channel 21 is provided on the positioning seat 20. The longitudinal surface 211 and the transverse surface 212 of the limiting channel 21 are flush with the inner side surface of the side plate 12 and the upper side surface of the bottom plate 11 respectively. An installation hole 16 is also provided on the bottom plate 11. The installation hole 16 on the bottom plate 11 is used to pass through bolts, and the fixed seat 10 is fixedly installed on the cutting table of the cutting machine through the installation hole 16. The notch 14 is aligned with the grinding wheel of the cutting machine, and the grinding wheel can enter the notch 14, so that the grinding wheel can completely cut the profile. The positioning seat 20 is close to the notch 14, and the size of the limiting channel 21 is slightly larger than the outer dimension of the profile, which is convenient for the profile to pass through, so as to position the profile. By installing the positioning seat 20 on the fixed seat 10 and providing the limiting channel 21 through which the profile passes on the positioning seat 20, the cutting end of the profile is positioned through the limiting channel 21 during cutting, thereby preventing the profile from bouncing during cutting, preventing the grinding wheel of the cutting machine from jamming, and reducing the safety risk.

[0031] In this embodiment, the included angle between the two side plates 12 is 90°, and the included angle between the midline of the notch 14 and the side plate 12 is 45°, so that a 45° bevel can be cut.

[0032] Furthermore, the limiting channel 21 is L-shaped or rectangular or C-shaped. When the limiting channel 21 is L-shaped, it is used for cutting angle steel; when the limiting channel 21 is rectangular, it is used for processing rectangular tubes, square tubes, and round tubes; when the limiting channel 21 is C-shaped, it is used for cutting channel steel and C-shaped steel.

[0033] Furthermore, in order to facilitate the processing of the positioning seat 20, the positioning seat 20 is an independent block structure, and there is a height difference between the transverse surface 212 and the upper side surface of the bottom plate 11. Please refer to Figure 1, 2 Therefore, on the bottom plate 11, cushion plates 13 are arranged on both sides of the two positioning seats 20, and the upper side surface of the cushion plate 13 is flush with the transverse surface 212 of the limiting channel 21.

[0034] Embodiment 2:

[0035] On the basis of Embodiment 1, refer to Figure 3 , 4 , a through accommodation hole 22 is arranged on the positioning seat 20, a movable block 23 is installed in the accommodation hole 22, and the movable block 23 and the accommodation hole 22 cooperate to form the limiting channel 21. At least two guide posts 25 are installed on the movable block 23, and slide holes 24 are arranged on the positioning seat 20 at positions corresponding to the guide posts 25. The guide posts 25 are slidably connected with the slide holes 24 in a sliding manner. A threaded hole 28 is arranged on the positioning seat 20, an adjusting screw rod 29 is screwed into the threaded hole 28, and the adjusting screw rod 29 is movably connected with the movable block 23. By rotating the adjusting screw rod 29, the position of the movable block 23 is adjusted, so as to adjust the size of the limiting channel 21. Such a structure has the following advantages. First, when the profile is inserted into the limiting channel 21, the size of the limiting channel 21 can be enlarged by rotating the adjusting screw rod 29, which is convenient for the profile to pass through. Second, before cutting, the adjusting screw rod 29 can be rotated to abut and fix the movable block 23 against the profile, so as to better prevent bouncing.

[0036] In this embodiment, a bearing is installed in an interference fit at the position of the movable block 23 corresponding to the adjusting screw rod 29, and the end of the adjusting screw rod 29 is in interference fit with the inner ring of this bearing. Thus, when the adjusting screw rod 29 is rotated, the movable block 23 can be driven to move. Since the guide posts 25 are installed on the movable block 23 and the guide posts 25 are in guiding sliding fit with the slide holes 24, the movable block 23 can move in a directional manner.

[0037] In this embodiment, the movable block 23 has a trapezoidal structure, the axis of the adjusting screw rod 29 forms an angle of 45° with the transverse surface 212, and the movable block 23 and the accommodation hole 22 cooperate to form an L-shaped limiting channel 21.

[0038] Of course, the accommodation hole 22 can be a rectangular hole, the movable block 23 is also rectangular, and the axis of the adjusting screw rod 29 is parallel to the transverse surface 212. In this way, the limiting channel 21 can be adjusted horizontally, and it can be applied to processing rectangular profiles, circular profiles, and channel steels.

[0039] Further, a counterbore 241 is provided at one end of the sliding hole 24 away from the movable block 23. A spring 26 is sleeved on a section of the guiding column 25 located in the counterbore 241. A limiting member 27 is installed at the end of the guiding column 25 located in the counterbore 241. One end of the spring 26 abuts against the bottom of the counterbore 241, and the other end abuts against the limiting member 27. The adjusting screw 29 contacts the movable block 23. When the handle of the adjusting screw 29 is turned, when the adjusting screw 29 moves downward, the movable block 23 moves downward, and at the same time the spring 26 is compressed. When the adjusting screw 29 moves upward, the movable block 23 moves upward under the action of the spring 26.

[0040] In this embodiment, the limiting member 27 is a flat washer and a screw. The threaded end of the screw passes through the flat washer and is threadedly connected and fixed to the guiding column 25. The spring 26 abuts against the flat washer.

[0041] Further, referring to Figure 2 , an installation position 15 is provided on the fixed seat 10, and the positioning seat 20 is fixedly installed on the installation position 15. Specifically, the installation position 15 is a notch provided on the fixed seat 10, and the positioning seat 20 can be welded to the installation position 15.

[0042] Embodiment Three:

[0043] Referring to Figure 5 , on the basis of Embodiment One or Embodiment Two, when the profile is too long to be placed stably, a support frame 30 is installed on the end face of the fixed seat 10 corresponding to the limiting channel 21. It is formed by the support of the support frame 30.

[0044] In this embodiment, the support frame 30 is made of an angle steel welded to the side of the fixed seat 10.

[0045] Further, a cushion block 31 is provided at the bottom of the support frame 30. The support frame 30 is supported by the cushion block 31 to make the support frame 30 more stable. During use, the cushion block 31 is supported on the ground or the workbench.

[0046] The working principle or operation process of the present utility model is as follows:

[0047] Referring to Figure 6 , during use, place the angle steel 40 on the support frame 30, then move the angle steel 40 so that the angle steel 40 passes through the limiting channel 21 on the positioning seat 20 until the end of the angle steel 40 abuts against the side plate 12 on the opposite side. Rotate the adjusting screw 29 to make the movable block 23 abut against and fix the angle steel 40. Hold the angle steel 40 and the support frame 30 with one hand, and at this time this hand is far away from the positioning seat 20. Use the other hand to start the cutting machine to cut.

[0048] When cutting the bevel at the other end, place the angle steel 40 on the support frame 30 on the other side, and repeat the above steps for cutting.

Claims

1. A box-type fan frame blanking and positioning device, characterized in that: The invention comprises a fixing seat (10) and a positioning seat (20), wherein the fixing seat (10) comprises a bottom plate (11) and a side plate (12), and the side plates (12) are respectively arranged on both sides of one corner of the bottom plate (11), and the bottom plate (11) and the side plates (12) are respectively arranged with notches (14) at positions corresponding to the corner, and two positioning seats (20) are mounted on the bottom plate (11) and respectively correspond to the side plates (12) on both sides, and a limiting channel (21) is arranged on the positioning seat (20), and the longitudinal surface (211) and the transverse surface (212) of the limiting channel (21) are respectively flush with the inner side surface of the side plate (12) and the upper side surface of the bottom plate (11); and the bottom plate (11) is also provided with a mounting hole (16).

2. A box-type fan frame blanking and positioning device according to claim 1, characterized in that: The limiting channel (21) is L-shaped, rectangular or C-shaped.

3. A box-type fan frame blanking and positioning device according to claim 1, characterized in that: Pads (13) are provided on the bottom plate (11) on both sides of the two positioning seats (20), and the upper side surface of the pads (13) is flush with the transverse surface (212) of the limiting channel (21).

4. A box-type fan frame blanking and positioning device according to any one of claims 1 to 3, characterized in that: The positioning seat (20) is provided with a through accommodating hole (22), a movable block (23) is installed in the accommodating hole (22), the movable block (23) cooperates with the accommodating hole (22) to form the limiting channel (21), at least two guide posts (25) are installed on the movable block (23), a sliding hole (24) is provided on the positioning seat (20) at a position corresponding to the guide post (25), the guide post (25) and the sliding hole (24) are slidably connected, a threaded hole (28) is provided on the positioning seat (20), an adjusting screw (29) is screwed to the threaded hole (28), and the adjusting screw (29) is movably connected to the movable block (23), and the position of the movable block (23) is adjusted by rotating the adjusting screw (29), thereby adjusting the size of the limiting channel (21).

5. A box-type fan frame blanking and positioning device according to claim 4, characterized in that: The sliding hole (24) is provided with a countersunk hole (241) at one end away from the movable block (23); a section of the guide column (25) located in the countersunk hole (241) is sleeved with a spring (26); a limit piece (27) is installed at the end of the guide column (25) located in the countersunk hole (241); one end of the spring (26) abuts against the bottom of the countersunk hole (241) and the other end abuts against the limit piece (27); the adjusting screw (29) contacts the movable block (23).

6. A box-type fan frame blanking and positioning device according to claim 1, characterized in that: The fixing seat (10) is provided with a mounting position (15), and the positioning seat (20) is fixedly mounted on the mounting position (15).

7. The box-type fan frame blanking and positioning device according to claim 1 is characterized in that: A support frame (30) is mounted on the fixing seat (10) at an end surface corresponding to the limiting channel (21).

8. A box-type fan frame blanking and positioning device according to claim 7, characterized in that: A cushion block (31) is provided at the bottom of the support frame (30).

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