Shaft motor variable pitch structure

Abstract

The utility model belongs to the technical field of variable pitch structures, and discloses a variable pitch structure of a shaft motor, which comprises two fixing frames and two guide rods fixed between the two fixing frames, a rotating shaft is rotatably connected between the two fixing frames, a plurality of spiral grooves are arranged on the rotating shaft, and the two guide rods are arranged in the spiral grooves. A plurality of station assemblies are connected between the two guide rods in a sliding mode, each station assembly comprises a sliding base and a sliding column penetrating through the sliding base in a screwed mode, and the bottoms of the sliding columns extend into the spiral grooves in a sliding mode in a one-to-one correspondence mode. When station pitch changing operation is achieved, the rotating shaft is driven by the motor to rotate so that the multiple spiral grooves can push the sliding columns of the multiple station assemblies to move, the multiple station assemblies can be driven to be opened and closed along the guide rods in the relative positions, pitch changing operation can be achieved only by rotating the rotating shaft, occupied space is small, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of variable distance structure, specifically relates to a shaft motor variable distance structure. BACKGROUND

[0002] The existing variable distance structure is provided with a plurality of radial grooves on a flat plate, a plurality of slide columns on a plurality of stations are respectively slidably connected in the radial grooves, when the station variable distance is realized, the flat plate is pushed by external force to make the radial groove push the slide column to drive the station to move, so that the plurality of stations are opened and closed, but when the variable distance between the plurality of stations is relatively large, the flat plate needs to have a large length and width to set the radial groove, and the moving space of the flat plate needs to be reserved, so that the existing variable distance structure is large in size, cannot be used in the scene with small space, and is poor in practicability. SUMMARY

[0003] The utility model discloses a kind of shaft motor variable distance structures, to solve the problem of poor practicability caused by the size of existing variable distance structure being large.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A kind of shaft motor variable distance structure, including two fixed frame and two guide rods fixed between the two fixed frame, two The rotating shaft is rotatably connected between the fixed frame, the rotating shaft is provided with a plurality of spiral grooves, a plurality of station assemblies are slidably connected between the two guide rods, a plurality of The slide column of the slide seat is screwed through the slide seat, and the bottom of a plurality of slide columns is slid into a plurality of spiral grooves.

[0006] Preferably, the pitch of a plurality of spiral grooves gradually increases from the middle to both sides of the rotating shaft.

[0007] Preferably, the station assembly further includes two inverted U-shaped structure sliding blocks symmetrically fixedly installed on the bottom of the slide seat, and the two sliding blocks are slidably connected to the outer side of the two guide rods.

[0008] Preferably, a plurality of upper rollers are rotatably connected to the inner side of the sliding block, a slide rod is slidably arranged at the bottom of one end of the sliding block, a rotating seat is fixedly installed at the bottom of the slide rod, a lower roller is rotatably connected in the rotating seat, and the plurality of upper rollers and the lower rollers are respectively abutted on the upper and lower sides of the guide rod.

[0009] Preferably, a circular slide groove and a square slide groove are sequentially arranged from bottom to top in one end of the sliding block, the top of the slide rod slides through the circular slide groove, a spring is sleeved on the outer side of the slide rod, a square block is fixedly installed on the top of the slide rod, the square block is slidably connected in the square slide groove, and the spring is located between the square block and the bottom end of the circular slide groove.

[0010] Preferably, the diameter of the circular sliding slot is greater than the diagonal length of the end face of the square block.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) The utility model discloses a rotating shaft and spiral groove are provided, when realizing the operation of variable pitch, the rotating shaft is driven to rotate through the motor to make multiple spiral grooves push the slide column of multiple station assemblies to move respectively, thereby driving multiple station assemblies to realize the opening and folding of relative position along the guide rod, and the operation of variable pitch can be realized only by rotating the rotating shaft, so that the occupied space is smaller and the practicality is high.

[0013] (2) The utility model discloses a sliding rod, square column, spring, circular sliding slot and square sliding slot are provided, when installing the station assembly, the square block is moved to the circular sliding slot by pulling the sliding rod, and the square block is rotated in the circular sliding slot by rotating the sliding rod, simultaneously, the rotating seat drives the lower roller to move and rotate from the bottom of the sliding block, which is convenient for directly installing the station assembly from the upper part of the two guide rods, then the rotating seat and the lower roller are moved and rotated to the lower part of the guide rod again, the lower roller and multiple upper rollers are respectively abutted on the two sides of the guide rod through the elastic force of the spring, so that the station assembly is positioned and installed, and the installation efficiency is higher.

[0014] (3) The rolling of the upper roller and the lower roller can reduce the friction between the sliding block and the guide rod, thereby reducing the force required when the spiral groove pushes the slide column and the slide base to move, and further reducing the load when the rotating shaft drives to rotate. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the first perspective view of the utility model;

[0016] Figure 2 It is the second perspective view of the utility model;

[0017] Figure 3 It is the sectional view of the utility model;

[0018] Figure 4 It is the station assembly assembly sectional view of the utility model;

[0019] Figure 5 It is the sliding rod assembly perspective view of the utility model;

[0020] In the drawing: 1-fixed frame, 2-guide rod, 3-rotating shaft, 4-spiral groove, 5-slide base, 6-slide column, 7-sliding block, 8-square sliding slot, 9-square block, 10-circular sliding slot, 11-spring, 12-sliding rod, 13-rotating seat, 14-lower roller, 15-upper roller. DETAILED DESCRIPTION

[0021] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of the utility model protection.

[0022] Please refer to Figures 1-5 The utility model provides the following technical scheme:

[0023] A shaft motor variable distance structure, including two fixed frame 1 and two guide bars 2 fixed between two fixed frame 1, two fixed frame 1 are rotatably connected with the shaft 3, the shaft 3 is provided with multiple spiral grooves 4, multiple work position assemblies are slidably connected between two guide bars 2, multiple work position assemblies all include sliding seat 5 and the slide column 6 of screwing through sliding seat 5, and the bottom of multiple slide columns 6 is slid into multiple spiral grooves 4 respectively one by one;The pitch of multiple spiral grooves 4 gradually increases from the middle of the shaft 3 to both sides.

[0024] Based on the above structure, when the variable distance operation of the work position is executed:

[0025] First, the shaft motor drives the rotation of the shaft 3, so that multiple spiral grooves 4 on the shaft 3 are rotated around the axis of the shaft 3, so that multiple spiral grooves 4 push the slide column 6 slidably matched in it, and then multiple slide columns 6 drive corresponding sliding seat 5 to move along two guide bars respectively, since the pitch of multiple spiral grooves 4 gradually increases from the middle of the shaft 3 to both sides, so that the distance between adjacent sliding seat 5 gradually increases when multiple sliding seat 5 slides to both ends of the shaft 3 respectively, the relative position between multiple work positions is expanded;When multiple sliding seat 5 slides to the middle of the shaft 3, the distance between adjacent sliding seat 5 gradually decreases, the relative position between multiple work positions is contracted, so as to realize the variable distance operation of the work position.

[0026] In addition, since the slide column 6 is screw connected to the sliding seat 5, when it is necessary to adjust the cooperation between the work position assembly and different spiral grooves 4, only need to rotate the slide column 6 on the sliding seat 5 to make the bottom of the slide column 6 slide out of the spiral groove 4, then the work position assembly can be slid on the guide bar 2 to move above another spiral groove 4, and then the slide column 6 is rotated again to insert the bottom of the sliding seat 6 into another spiral groove 4, so as to complete the adjustment of the cooperation between the work position assembly and different spiral grooves 4, without completely disassembling and installing the work position assembly, the efficiency is higher.

[0027] In addition, regarding the installation of the work position assembly, the following structure is preferably provided:

[0028] The work station assembly further comprises two inverted U-shaped sliding blocks 7 symmetrically fixedly installed at the bottom of the sliding base 5, and the two sliding blocks 7 are respectively slidably fitted on the outer sides of the two guide rods 2;

[0029] A plurality of upper rollers 15 are rotatably connected to the inner side of the sliding block 7, and a sliding rod 12 is slidably arranged at the bottom of one end of the sliding block 7, a rotating seat 13 is fixedly installed at the bottom of the sliding rod 12, and a lower roller 14 is rotatably connected in the rotating seat 13, and the plurality of upper rollers 15 and the lower roller 14 are respectively abutted on the upper and lower sides of the guide rod 2;

[0030] A circular sliding groove 10 and a square sliding groove 8 are sequentially arranged in the sliding block 7 from bottom to top at one end thereof, the top of the sliding rod 12 is slidably arranged through the circular sliding groove 10, a spring 11 is sleeved on the outer side of the sliding rod 12, a square block 9 is fixedly installed at the top of the sliding rod 12, and the square block 9 is slidably fitted in the square sliding groove 8, and the spring 11 is located between the square block 9 and the bottom end of the circular sliding groove 10;

[0031] The diameter of the circular sliding groove 10 is greater than the diagonal length of the end face of the square block 9.

[0032] As can be seen from the above, when the work station assembly is installed, the sliding rod 12 is first pulled downward to drive the square block 9 at the top to move from the square sliding groove 8 into the circular sliding groove 10, and at the same time the square block 9 compresses the spring 11 at the bottom of the circular sliding groove 10, and since the diameter of the circular sliding groove 10 is greater than the diagonal length of the end face of the square block 9, the circular sliding groove 10 has sufficient space for the rotation of the square block 9, then the sliding rod 12 is rotated to make the rotating seat 13 drive the lower roller 14 to rotate to one side of the sliding block 7, and at the same time the square block 9 rotates in the circular sliding groove 10, so that the square block 9 cannot temporarily extend into the square sliding groove 8, at this time the sliding base 5 and the two sliding blocks 7 of the work station assembly can be directly installed above the two guide rods 2 from above, so that the bottom of the upper roller 15 on the inner side of the sliding block 7 abuts against the top of the guide rod 2, and in this process the rotating seat 13 and the lower roller 14 will not collide with and block the installation of the guide rod 2, then the sliding rod 12 is reversely rotated to make the rotating seat 13 and the lower roller 14 rotate to the lower side of the guide rod 2, and the square block 9 can be slidably extended into the square sliding groove 8, at this time the spring 11 pushes the square block 9 to extend into the square sliding groove 8 under the elastic force, so that the sliding rod 12 drives the rotating seat 13 to approach the bottom of the guide rod 2, so that the lower roller 14 abuts against the bottom of the guide rod, thereby enabling the work station assembly to be limitingly installed between the two guide rods 2, which is simple in operation and high in efficiency.

[0033] In addition, the rolling arrangement of the upper rollers 15 and the lower rollers 14 can reduce the friction between the sliding block 7 and the guide rod 2, thereby reducing the force required for the screw groove 4 to drive the sliding column 6 and the sliding base 5 to move, and further reducing the load of the rotating shaft 3 when it is driven to rotate, so that the variable pitch operation is more easily realized.

[0034] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shaft motor pitch-changing structure, characterized in that: It includes two fixed frames (1) and two guide rods (2) fixed between the two fixed frames (1). A rotating shaft (3) is rotatably connected between the two fixed frames (1). Multiple spiral grooves (4) are opened on the rotating shaft (3). Multiple work station components are slidably connected between the two guide rods (2). Each of the multiple work station components includes a slide (5) and a sliding column (6) that is screwed through the slide (5). The bottoms of the multiple sliding columns (6) slide into the multiple spiral grooves (4) respectively.

2. The shaft motor pitch-changing structure according to claim 1, characterized in that: The pitch of the multiple spiral grooves (4) gradually increases from the middle of the shaft (3) to both sides.

3. The shaft motor pitch-changing structure according to claim 1, characterized in that: The workstation assembly also includes two inverted U-shaped sliders (7) symmetrically fixedly installed at the bottom of the slide block (5), and the two sliders (7) are respectively slidably engaged with the outside of the two guide rods (2).

4. The shaft motor pitch-changing structure according to claim 3, characterized in that: Multiple upper rollers (15) are rotatably connected to the inner side of the slider (7). A sliding rod (12) is slidably provided at the bottom of one end of the slider (7). A rotating seat (13) is fixedly installed at the bottom of the sliding rod (12). A lower roller (14) is rotatably connected inside the rotating seat (13). The multiple upper rollers (15) and the lower rollers (14) respectively abut against the upper and lower sides of the guide rod (2).

5. The shaft motor pitch-changing structure according to claim 4, characterized in that: The slider (7) has a circular groove (10) and a square groove (8) arranged from bottom to top at one end, and the top of the slider (12) slides through the circular groove (10).

6. The shaft motor pitch-changing structure according to claim 5, characterized in that: A spring (11) is fitted on the outside of the slide bar (12).

7. The shaft motor pitch-changing structure according to claim 6, characterized in that: A square block (9) is fixedly installed on the top of the slide bar (12), and the square block (9) slides within the square groove (8).

8. The shaft motor pitch-changing structure according to claim 7, characterized in that: The spring (11) is located between the square block (9) and the bottom of the circular groove (10).

9. The shaft motor pitch-changing structure according to claim 8, characterized in that: The diameter of the circular groove (10) is greater than the diagonal length of the end face of the square block (9).

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